updates

Backend/alembic/versions/6f7f8689fc98_add_anonymous_gdpr_support.py

@@ -0,0 +1,50 @@
+"""add_anonymous_gdpr_support
+
+Revision ID: 6f7f8689fc98
+Revises: 7a899ef55e3b
+Create Date: 2025-12-01 04:15:00.000000
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '6f7f8689fc98'
+down_revision = '7a899ef55e3b'
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # Update gdpr_requests table to support anonymous users
+    op.alter_column('gdpr_requests', 'user_id',
+                    existing_type=sa.Integer(),
+                    nullable=True)
+    op.add_column('gdpr_requests', sa.Column('is_anonymous', sa.Boolean(), nullable=False, server_default='0'))
+    op.create_index(op.f('ix_gdpr_requests_is_anonymous'), 'gdpr_requests', ['is_anonymous'], unique=False)
+    
+    # Update consents table to support anonymous users
+    op.alter_column('consents', 'user_id',
+                    existing_type=sa.Integer(),
+                    nullable=True)
+    op.add_column('consents', sa.Column('user_email', sa.String(length=255), nullable=True))
+    op.add_column('consents', sa.Column('is_anonymous', sa.Boolean(), nullable=False, server_default='0'))
+    op.create_index(op.f('ix_consents_user_email'), 'consents', ['user_email'], unique=False)
+    op.create_index(op.f('ix_consents_is_anonymous'), 'consents', ['is_anonymous'], unique=False)
+
+
+def downgrade() -> None:
+    op.drop_index(op.f('ix_consents_is_anonymous'), table_name='consents')
+    op.drop_index(op.f('ix_consents_user_email'), table_name='consents')
+    op.drop_column('consents', 'is_anonymous')
+    op.drop_column('consents', 'user_email')
+    op.alter_column('consents', 'user_id',
+                    existing_type=sa.Integer(),
+                    nullable=False)
+    
+    op.drop_index(op.f('ix_gdpr_requests_is_anonymous'), table_name='gdpr_requests')
+    op.drop_column('gdpr_requests', 'is_anonymous')
+    op.alter_column('gdpr_requests', 'user_id',
+                    existing_type=sa.Integer(),
+                    nullable=False)

Backend/alembic/versions/7a899ef55e3b_add_comprehensive_gdpr_tables.py

@@ -0,0 +1,173 @@
+"""add_comprehensive_gdpr_tables
+
+Revision ID: 7a899ef55e3b
+Revises: dbafe747c931
+Create Date: 2025-12-01 04:10:25.699589
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import mysql
+
+
+# revision identifiers, used by Alembic.
+revision = '7a899ef55e3b'
+down_revision = 'dbafe747c931'
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # Consent table
+    op.create_table(
+        'consents',
+        sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+        sa.Column('user_id', sa.Integer(), nullable=False),
+        sa.Column('consent_type', sa.Enum('marketing', 'analytics', 'necessary', 'preferences', 'third_party_sharing', 'profiling', 'automated_decision_making', name='consenttype'), nullable=False),
+        sa.Column('status', sa.Enum('granted', 'withdrawn', 'pending', 'expired', name='consentstatus'), nullable=False),
+        sa.Column('granted_at', sa.DateTime(), nullable=True),
+        sa.Column('withdrawn_at', sa.DateTime(), nullable=True),
+        sa.Column('expires_at', sa.DateTime(), nullable=True),
+        sa.Column('legal_basis', sa.String(length=100), nullable=True),
+        sa.Column('consent_method', sa.String(length=50), nullable=True),
+        sa.Column('consent_version', sa.String(length=20), nullable=True),
+        sa.Column('ip_address', sa.String(length=45), nullable=True),
+        sa.Column('user_agent', sa.String(length=255), nullable=True),
+        sa.Column('source', sa.String(length=100), nullable=True),
+        sa.Column('extra_metadata', sa.JSON(), nullable=True),
+        sa.Column('created_at', sa.DateTime(), nullable=False),
+        sa.Column('updated_at', sa.DateTime(), nullable=False),
+        sa.ForeignKeyConstraint(['user_id'], ['users.id'], ),
+        sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_consents_id'), 'consents', ['id'], unique=False)
+    op.create_index(op.f('ix_consents_user_id'), 'consents', ['user_id'], unique=False)
+    op.create_index(op.f('ix_consents_consent_type'), 'consents', ['consent_type'], unique=False)
+    op.create_index(op.f('ix_consents_status'), 'consents', ['status'], unique=False)
+    op.create_index(op.f('ix_consents_created_at'), 'consents', ['created_at'], unique=False)
+    
+    # Data processing records table
+    op.create_table(
+        'data_processing_records',
+        sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+        sa.Column('processing_category', sa.Enum('collection', 'storage', 'usage', 'sharing', 'deletion', 'anonymization', 'transfer', name='processingcategory'), nullable=False),
+        sa.Column('legal_basis', sa.Enum('consent', 'contract', 'legal_obligation', 'vital_interests', 'public_task', 'legitimate_interests', name='legalbasis'), nullable=False),
+        sa.Column('purpose', sa.Text(), nullable=False),
+        sa.Column('data_categories', sa.JSON(), nullable=True),
+        sa.Column('data_subjects', sa.JSON(), nullable=True),
+        sa.Column('recipients', sa.JSON(), nullable=True),
+        sa.Column('third_parties', sa.JSON(), nullable=True),
+        sa.Column('transfers_to_third_countries', sa.Boolean(), nullable=False),
+        sa.Column('transfer_countries', sa.JSON(), nullable=True),
+        sa.Column('safeguards', sa.Text(), nullable=True),
+        sa.Column('retention_period', sa.String(length=100), nullable=True),
+        sa.Column('retention_criteria', sa.Text(), nullable=True),
+        sa.Column('security_measures', sa.Text(), nullable=True),
+        sa.Column('user_id', sa.Integer(), nullable=True),
+        sa.Column('related_booking_id', sa.Integer(), nullable=True),
+        sa.Column('related_payment_id', sa.Integer(), nullable=True),
+        sa.Column('processed_by', sa.Integer(), nullable=True),
+        sa.Column('processing_timestamp', sa.DateTime(), nullable=False),
+        sa.Column('extra_metadata', sa.JSON(), nullable=True),
+        sa.Column('created_at', sa.DateTime(), nullable=False),
+        sa.ForeignKeyConstraint(['processed_by'], ['users.id'], ),
+        sa.ForeignKeyConstraint(['user_id'], ['users.id'], ),
+        sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_data_processing_records_id'), 'data_processing_records', ['id'], unique=False)
+    op.create_index(op.f('ix_data_processing_records_processing_category'), 'data_processing_records', ['processing_category'], unique=False)
+    op.create_index(op.f('ix_data_processing_records_legal_basis'), 'data_processing_records', ['legal_basis'], unique=False)
+    op.create_index(op.f('ix_data_processing_records_user_id'), 'data_processing_records', ['user_id'], unique=False)
+    op.create_index(op.f('ix_data_processing_records_processing_timestamp'), 'data_processing_records', ['processing_timestamp'], unique=False)
+    op.create_index(op.f('ix_data_processing_records_created_at'), 'data_processing_records', ['created_at'], unique=False)
+    
+    # Data breaches table
+    op.create_table(
+        'data_breaches',
+        sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+        sa.Column('breach_type', sa.Enum('confidentiality', 'integrity', 'availability', name='breachtype'), nullable=False),
+        sa.Column('status', sa.Enum('detected', 'investigating', 'contained', 'reported_to_authority', 'notified_data_subjects', 'resolved', name='breachstatus'), nullable=False),
+        sa.Column('description', sa.Text(), nullable=False),
+        sa.Column('affected_data_categories', sa.JSON(), nullable=True),
+        sa.Column('affected_data_subjects', sa.JSON(), nullable=True),
+        sa.Column('detected_at', sa.DateTime(), nullable=False),
+        sa.Column('occurred_at', sa.DateTime(), nullable=True),
+        sa.Column('contained_at', sa.DateTime(), nullable=True),
+        sa.Column('reported_to_authority_at', sa.DateTime(), nullable=True),
+        sa.Column('authority_reference', sa.String(length=255), nullable=True),
+        sa.Column('notified_data_subjects_at', sa.DateTime(), nullable=True),
+        sa.Column('notification_method', sa.String(length=100), nullable=True),
+        sa.Column('likely_consequences', sa.Text(), nullable=True),
+        sa.Column('measures_proposed', sa.Text(), nullable=True),
+        sa.Column('risk_level', sa.String(length=20), nullable=True),
+        sa.Column('reported_by', sa.Integer(), nullable=False),
+        sa.Column('investigated_by', sa.Integer(), nullable=True),
+        sa.Column('extra_metadata', sa.JSON(), nullable=True),
+        sa.Column('created_at', sa.DateTime(), nullable=False),
+        sa.Column('updated_at', sa.DateTime(), nullable=False),
+        sa.ForeignKeyConstraint(['investigated_by'], ['users.id'], ),
+        sa.ForeignKeyConstraint(['reported_by'], ['users.id'], ),
+        sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_data_breaches_id'), 'data_breaches', ['id'], unique=False)
+    op.create_index(op.f('ix_data_breaches_breach_type'), 'data_breaches', ['breach_type'], unique=False)
+    op.create_index(op.f('ix_data_breaches_status'), 'data_breaches', ['status'], unique=False)
+    op.create_index(op.f('ix_data_breaches_detected_at'), 'data_breaches', ['detected_at'], unique=False)
+    
+    # Retention rules table
+    op.create_table(
+        'retention_rules',
+        sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+        sa.Column('data_category', sa.String(length=100), nullable=False),
+        sa.Column('retention_period_days', sa.Integer(), nullable=False),
+        sa.Column('retention_period_months', sa.Integer(), nullable=True),
+        sa.Column('retention_period_years', sa.Integer(), nullable=True),
+        sa.Column('legal_basis', sa.Text(), nullable=True),
+        sa.Column('legal_requirement', sa.Text(), nullable=True),
+        sa.Column('action_after_retention', sa.String(length=50), nullable=False),
+        sa.Column('conditions', sa.JSON(), nullable=True),
+        sa.Column('is_active', sa.Boolean(), nullable=False),
+        sa.Column('description', sa.Text(), nullable=True),
+        sa.Column('created_by', sa.Integer(), nullable=True),
+        sa.Column('created_at', sa.DateTime(), nullable=False),
+        sa.Column('updated_at', sa.DateTime(), nullable=False),
+        sa.ForeignKeyConstraint(['created_by'], ['users.id'], ),
+        sa.PrimaryKeyConstraint('id'),
+        sa.UniqueConstraint('data_category')
+    )
+    op.create_index(op.f('ix_retention_rules_id'), 'retention_rules', ['id'], unique=False)
+    op.create_index(op.f('ix_retention_rules_data_category'), 'retention_rules', ['data_category'], unique=True)
+    op.create_index(op.f('ix_retention_rules_is_active'), 'retention_rules', ['is_active'], unique=False)
+    
+    # Data retention logs table
+    op.create_table(
+        'data_retention_logs',
+        sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+        sa.Column('retention_rule_id', sa.Integer(), nullable=False),
+        sa.Column('data_category', sa.String(length=100), nullable=False),
+        sa.Column('action_taken', sa.String(length=50), nullable=False),
+        sa.Column('records_affected', sa.Integer(), nullable=False),
+        sa.Column('affected_ids', sa.JSON(), nullable=True),
+        sa.Column('executed_by', sa.Integer(), nullable=True),
+        sa.Column('executed_at', sa.DateTime(), nullable=False),
+        sa.Column('success', sa.Boolean(), nullable=False),
+        sa.Column('error_message', sa.Text(), nullable=True),
+        sa.Column('extra_metadata', sa.JSON(), nullable=True),
+        sa.ForeignKeyConstraint(['executed_by'], ['users.id'], ),
+        sa.ForeignKeyConstraint(['retention_rule_id'], ['retention_rules.id'], ),
+        sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_data_retention_logs_id'), 'data_retention_logs', ['id'], unique=False)
+    op.create_index(op.f('ix_data_retention_logs_retention_rule_id'), 'data_retention_logs', ['retention_rule_id'], unique=False)
+    op.create_index(op.f('ix_data_retention_logs_data_category'), 'data_retention_logs', ['data_category'], unique=False)
+    op.create_index(op.f('ix_data_retention_logs_executed_at'), 'data_retention_logs', ['executed_at'], unique=False)
+
+
+def downgrade() -> None:
+    # Drop foreign keys first, then indexes, then tables
+    op.drop_table('data_retention_logs')
+    
+    op.drop_table('retention_rules')
+    op.drop_table('data_breaches')
+    op.drop_table('data_processing_records')
+    op.drop_table('consents')

Backend/requirements.txt

@@ -1,26 +1,28 @@
-fastapi==0.104.1
+fastapi==0.123.0
 uvicorn[standard]==0.24.0
 python-dotenv==1.0.0
 sqlalchemy==2.0.23
-pymysql==1.1.0
+pymysql==1.1.2
 cryptography>=41.0.7
-python-jose[cryptography]==3.3.0
+python-jose[cryptography]==3.5.0
 bcrypt==4.1.2
-python-multipart==0.0.6
+python-multipart==0.0.20
 aiofiles==23.2.1
 email-validator==2.1.0
 pydantic==2.5.0
 pydantic-settings==2.1.0
 slowapi==0.1.9
-pillow==10.1.0
+pillow==12.0.0
 aiosmtplib==3.0.1
-jinja2==3.1.2
+jinja2==3.1.6
 alembic==1.12.1
 stripe>=13.2.0
 paypal-checkout-serversdk>=1.0.3
 pyotp==2.9.0
 qrcode[pil]==7.4.2
-httpx==0.25.2
+httpx==0.28.1
+httpcore==1.0.9
+h11==0.16.0
 cryptography>=41.0.7
 bleach==6.1.0
 

Backend/run.py

@@ -1,13 +1,38 @@
 import uvicorn
+import signal
+import sys
 from src.shared.config.settings import settings
 from src.shared.config.logging_config import setup_logging, get_logger
 setup_logging()
 logger = get_logger(__name__)
+
+def signal_handler(sig, frame):
+    """Handle Ctrl+C gracefully."""
+    logger.info('\nReceived interrupt signal (Ctrl+C). Shutting down gracefully...')
+    sys.exit(0)
+
 if __name__ == '__main__':
+    # Register signal handler for graceful shutdown on Ctrl+C
+    signal.signal(signal.SIGINT, signal_handler)
+    signal.signal(signal.SIGTERM, signal_handler)
+    
     logger.info(f'Starting {settings.APP_NAME} on {settings.HOST}:{settings.PORT}')
     import os
     from pathlib import Path
     base_dir = Path(__file__).parent
     src_dir = str(base_dir / 'src')
-    use_reload = False
+    # Enable hot reload in development mode or if explicitly enabled via environment variable
-    uvicorn.run('src.main:app', host=settings.HOST, port=settings.PORT, reload=use_reload, log_level=settings.LOG_LEVEL.lower(), reload_dirs=[src_dir] if use_reload else None, reload_excludes=['*.log', '*.pyc', '*.pyo', '*.pyd', '__pycache__', '**/__pycache__/**', '*.db', '*.sqlite', '*.sqlite3'], reload_delay=1.0)
+    use_reload = settings.is_development or os.getenv('ENABLE_RELOAD', 'false').lower() == 'true'
+    if use_reload:
+        logger.info('Hot reload enabled - server will restart on code changes')
+        logger.info('Press Ctrl+C to stop the server')
+    uvicorn.run(
+        'src.main:app',
+        host=settings.HOST,
+        port=settings.PORT,
+        reload=use_reload,
+        log_level=settings.LOG_LEVEL.lower(),
+        reload_dirs=[src_dir] if use_reload else None,
+        reload_excludes=['*.log', '*.pyc', '*.pyo', '*.pyd', '__pycache__', '**/__pycache__/**', '*.db', '*.sqlite', '*.sqlite3', 'venv/**', '.venv/**'],
+        reload_delay=0.5
+    )

Backend/src/auth/routes/auth_routes.py

@@ -7,6 +7,7 @@ import uuid
 import os
 from ...shared.config.database import get_db
 from ..services.auth_service import auth_service
+from ..services.session_service import session_service
 from ..schemas.auth import RegisterRequest, LoginRequest, RefreshTokenRequest, ForgotPasswordRequest, ResetPasswordRequest, AuthResponse, TokenResponse, MessageResponse, MFAInitResponse, EnableMFARequest, VerifyMFARequest, MFAStatusResponse, UpdateProfileRequest
 from ...security.middleware.auth import get_current_user
 from ..models.user import User
@@ -85,6 +86,26 @@ async def register(
             path='/'
         )
         
+        # Create user session for new registration
+        try:
+            # Extract device info from user agent
+            device_info = None
+            if user_agent:
+                device_info = {'user_agent': user_agent}
+            
+            session_service.create_session(
+                db=db,
+                user_id=result['user']['id'],
+                ip_address=client_ip,
+                user_agent=user_agent,
+                device_info=str(device_info) if device_info else None
+            )
+        except Exception as e:
+            # Log error but don't fail registration if session creation fails
+            from ...shared.config.logging_config import get_logger
+            logger = get_logger(__name__)
+            logger.warning(f'Failed to create session during registration: {str(e)}')
+        
         # Log successful registration
         await audit_service.log_action(
             db=db,
@@ -171,6 +192,26 @@ async def login(
             path='/'
         )
         
+        # Create user session
+        try:
+            # Extract device info from user agent
+            device_info = None
+            if user_agent:
+                device_info = {'user_agent': user_agent}
+            
+            session_service.create_session(
+                db=db,
+                user_id=result['user']['id'],
+                ip_address=client_ip,
+                user_agent=user_agent,
+                device_info=str(device_info) if device_info else None
+            )
+        except Exception as e:
+            # Log error but don't fail login if session creation fails
+            from ...shared.config.logging_config import get_logger
+            logger = get_logger(__name__)
+            logger.warning(f'Failed to create session during login: {str(e)}')
+        
         # Log successful login
         await audit_service.log_action(
             db=db,
@@ -394,16 +435,23 @@ async def upload_avatar(request: Request, image: UploadFile=File(...), current_u
         
         # Validate file completely (MIME type, size, magic bytes, integrity)
         content = await validate_uploaded_image(image, max_avatar_size)
-        upload_dir = Path(__file__).parent.parent.parent / 'uploads' / 'avatars'
+        # Use same path calculation as main.py: go from Backend/src/auth/routes/auth_routes.py
+        # to Backend/uploads/avatars
+        upload_dir = Path(__file__).parent.parent.parent.parent / 'uploads' / 'avatars'
         upload_dir.mkdir(parents=True, exist_ok=True)
         if current_user.avatar:
-            old_avatar_path = Path(__file__).parent.parent.parent / current_user.avatar.lstrip('/')
+            old_avatar_path = Path(__file__).parent.parent.parent.parent / current_user.avatar.lstrip('/')
             if old_avatar_path.exists() and old_avatar_path.is_file():
                 try:
                     old_avatar_path.unlink()
                 except Exception:
                     pass
-        ext = Path(image.filename).suffix or '.png'
+        # Sanitize filename to prevent path traversal attacks
+        from ...shared.utils.sanitization import sanitize_filename
+        original_filename = image.filename or 'avatar.png'
+        sanitized_filename = sanitize_filename(original_filename)
+        ext = Path(sanitized_filename).suffix or '.png'
+        # Generate secure filename with user ID and UUID to prevent collisions
         filename = f'avatar-{current_user.id}-{uuid.uuid4()}{ext}'
         file_path = upload_dir / filename
         async with aiofiles.open(file_path, 'wb') as f:

Backend/src/auth/routes/session_routes.py

@@ -1,14 +1,17 @@
 """
 User session management routes.
 """
-from fastapi import APIRouter, Depends, HTTPException
+from fastapi import APIRouter, Depends, HTTPException, Request, Response, Cookie
 from sqlalchemy.orm import Session
 from ...shared.config.database import get_db
 from ...shared.config.logging_config import get_logger
+from ...shared.config.settings import settings
 from ...security.middleware.auth import get_current_user
 from ...auth.models.user import User
+from ...auth.models.user_session import UserSession
 from ...auth.services.session_service import session_service
 from ...shared.utils.response_helpers import success_response
+from jose import jwt
 
 logger = get_logger(__name__)
 router = APIRouter(prefix='/sessions', tags=['sessions'])
@@ -44,13 +47,15 @@ async def get_my_sessions(
 @router.delete('/{session_id}')
 async def revoke_session(
     session_id: int,
+    request: Request,
+    response: Response,
     current_user: User = Depends(get_current_user),
+    access_token: str = Cookie(None, alias='accessToken'),
     db: Session = Depends(get_db)
 ):
     """Revoke a specific session."""
     try:
         # Verify session belongs to user
-        from ...auth.models.user_session import UserSession
         session = db.query(UserSession).filter(
             UserSession.id == session_id,
             UserSession.user_id == current_user.id
@@ -59,10 +64,62 @@ async def revoke_session(
         if not session:
             raise HTTPException(status_code=404, detail='Session not found')
         
+        # Check if this is the current session being revoked
+        # We detect this by checking if:
+        # 1. The session IP matches the request IP (if available)
+        # 2. The session is the most recent active session
+        is_current_session = False
+        try:
+            client_ip = request.client.host if request.client else None
+            user_agent = request.headers.get('User-Agent', '')
+            
+            # Check if session matches current request characteristics
+            if client_ip and session.ip_address == client_ip:
+                # Also check if it's the most recent session
+                recent_session = db.query(UserSession).filter(
+                    UserSession.user_id == current_user.id,
+                    UserSession.is_active == True
+                ).order_by(UserSession.last_activity.desc()).first()
+                
+                if recent_session and recent_session.id == session_id:
+                    is_current_session = True
+        except Exception as e:
+            logger.warning(f'Could not determine if session is current: {str(e)}')
+            # If we can't determine, check if it's the only active session
+            active_sessions_count = db.query(UserSession).filter(
+                UserSession.user_id == current_user.id,
+                UserSession.is_active == True
+            ).count()
+            if active_sessions_count <= 1:
+                is_current_session = True
+        
         success = session_service.revoke_session(db=db, session_token=session.session_token)
         if not success:
             raise HTTPException(status_code=404, detail='Session not found')
         
+        # If this was the current session, clear cookies and indicate logout needed
+        if is_current_session:
+            from ...shared.config.settings import settings
+            samesite_value = 'strict' if settings.is_production else 'lax'
+            # Clear access token cookie
+            response.delete_cookie(
+                key='accessToken',
+                path='/',
+                samesite=samesite_value,
+                secure=settings.is_production
+            )
+            # Clear refresh token cookie
+            response.delete_cookie(
+                key='refreshToken',
+                path='/',
+                samesite=samesite_value,
+                secure=settings.is_production
+            )
+            return success_response(
+                message='Session revoked successfully. You have been logged out.',
+                data={'logout_required': True}
+            )
+        
         return success_response(message='Session revoked successfully')
     except HTTPException:
         raise
@@ -72,19 +129,41 @@ async def revoke_session(
 
 @router.post('/revoke-all')
 async def revoke_all_sessions(
+    request: Request,
+    response: Response,
     current_user: User = Depends(get_current_user),
+    access_token: str = Cookie(None, alias='accessToken'),
     db: Session = Depends(get_db)
 ):
     """Revoke all sessions for current user."""
     try:
         count = session_service.revoke_all_user_sessions(
             db=db,
-            user_id=current_user.id
+            user_id=current_user.id,
+            exclude_token=None  # Don't exclude current session, revoke all
+        )
+        
+        # Clear cookies since all sessions (including current) are revoked
+        from ...shared.config.settings import settings
+        samesite_value = 'strict' if settings.is_production else 'lax'
+        # Clear access token cookie
+        response.delete_cookie(
+            key='accessToken',
+            path='/',
+            samesite=samesite_value,
+            secure=settings.is_production
+        )
+        # Clear refresh token cookie
+        response.delete_cookie(
+            key='refreshToken',
+            path='/',
+            samesite=samesite_value,
+            secure=settings.is_production
         )
         
         return success_response(
-            data={'revoked_count': count},
+            data={'revoked_count': count, 'logout_required': True},
-            message=f'Revoked {count} session(s)'
+            message=f'Revoked {count} session(s). You have been logged out.'
         )
     except Exception as e:
         logger.error(f'Error revoking all sessions: {str(e)}', exc_info=True)

Backend/src/auth/services/auth_service.py

@@ -29,19 +29,13 @@ class AuthService:
         if not self.jwt_secret:
             error_msg = (
                 'CRITICAL: JWT_SECRET is not configured. '
-                'Please set JWT_SECRET environment variable to a secure random string (minimum 32 characters).'
+                'Please set JWT_SECRET environment variable to a secure random string (minimum 64 characters). '
+                'Generate one using: python -c "import secrets; print(secrets.token_urlsafe(64))"'
             )
             logger.error(error_msg)
-            if settings.is_production:
+            # SECURITY: Always fail if JWT_SECRET is not configured, even in development
-                raise ValueError(error_msg)
+            # This prevents accidental deployment without proper secrets
-            else:
+            raise ValueError(error_msg)
-                # In development, generate a secure secret but warn
-                import secrets
-                self.jwt_secret = secrets.token_urlsafe(64)
-                logger.warning(
-                    f'JWT_SECRET not configured. Auto-generated secret for development. '
-                    f'Set JWT_SECRET environment variable for production: {self.jwt_secret}'
-                )
         
         # Validate JWT secret strength
         if len(self.jwt_secret) < 32:
@@ -65,14 +59,37 @@ class AuthService:
         self.jwt_refresh_expires_in = os.getenv("JWT_REFRESH_EXPIRES_IN", "7d")
 
     def generate_tokens(self, user_id: int) -> dict:
+        from datetime import datetime, timedelta
+        
+        # SECURITY: Add standard JWT claims for better security
+        now = datetime.utcnow()
+        access_expires = now + timedelta(minutes=settings.JWT_ACCESS_TOKEN_EXPIRE_MINUTES)
+        refresh_expires = now + timedelta(days=settings.JWT_REFRESH_TOKEN_EXPIRE_DAYS)
+        
+        access_payload = {
+            "userId": user_id,
+            "exp": access_expires,  # Expiration time
+            "iat": now,  # Issued at
+            "iss": settings.APP_NAME,  # Issuer
+            "type": "access"  # Token type
+        }
+        
+        refresh_payload = {
+            "userId": user_id,
+            "exp": refresh_expires,  # Expiration time
+            "iat": now,  # Issued at
+            "iss": settings.APP_NAME,  # Issuer
+            "type": "refresh"  # Token type
+        }
+        
         access_token = jwt.encode(
-            {"userId": user_id},
+            access_payload,
             self.jwt_secret,
             algorithm="HS256"
         )
 
         refresh_token = jwt.encode(
-            {"userId": user_id},
+            refresh_payload,
             self.jwt_refresh_secret,
             algorithm="HS256"
         )
@@ -316,8 +333,22 @@ class AuthService:
             db.commit()
             raise ValueError("Refresh token expired")
 
+        from datetime import datetime, timedelta
+        
+        # SECURITY: Add standard JWT claims when refreshing token
+        now = datetime.utcnow()
+        access_expires = now + timedelta(minutes=settings.JWT_ACCESS_TOKEN_EXPIRE_MINUTES)
+        
+        access_payload = {
+            "userId": decoded["userId"],
+            "exp": access_expires,  # Expiration time
+            "iat": now,  # Issued at
+            "iss": settings.APP_NAME,  # Issuer
+            "type": "access"  # Token type
+        }
+        
         access_token = jwt.encode(
-            {"userId": decoded["userId"]},
+            access_payload,
             self.jwt_secret,
             algorithm="HS256"
         )

Backend/src/bookings/routes/booking_routes.py

@@ -4,7 +4,7 @@ from sqlalchemy import and_, or_, func
 from sqlalchemy.exc import IntegrityError
 from typing import Optional
 from datetime import datetime
-import random
+import secrets
 import os
 from ...shared.config.database import get_db
 from ...shared.config.settings import settings
@@ -37,7 +37,8 @@ def _generate_invoice_email_html(invoice: dict, is_proforma: bool=False) -> str:
 def generate_booking_number() -> str:
     prefix = 'BK'
     ts = int(datetime.utcnow().timestamp() * 1000)
-    rand = random.randint(1000, 9999)
+    # Use cryptographically secure random number to prevent enumeration attacks
+    rand = secrets.randbelow(9000) + 1000  # Random number between 1000-9999
     return f'{prefix}-{ts}-{rand}'
 
 def calculate_booking_payment_balance(booking: Booking) -> dict:

Backend/src/bookings/services/group_booking_service.py

@@ -1,7 +1,7 @@
 from sqlalchemy.orm import Session
 from datetime import datetime, timedelta
 from typing import Optional, List, Dict, Any
-import random
+import secrets
 import string
 from decimal import Decimal
 from ..models.group_booking import (
@@ -21,11 +21,13 @@ class GroupBookingService:
     
     @staticmethod
     def generate_group_booking_number(db: Session) -> str:
-        """Generate unique group booking number"""
+        """Generate unique group booking number using cryptographically secure random"""
         max_attempts = 10
+        alphabet = string.ascii_uppercase + string.digits
         for _ in range(max_attempts):
             timestamp = datetime.utcnow().strftime('%Y%m%d')
-            random_suffix = ''.join(random.choices(string.ascii_uppercase + string.digits, k=6))
+            # Use secrets.choice() instead of random.choices() for security
+            random_suffix = ''.join(secrets.choice(alphabet) for _ in range(6))
             booking_number = f"GRP-{timestamp}-{random_suffix}"
             
             existing = db.query(GroupBooking).filter(
@@ -35,8 +37,9 @@ class GroupBookingService:
             if not existing:
                 return booking_number
         
-        # Fallback
+        # Fallback with secure random suffix
-        return f"GRP-{int(datetime.utcnow().timestamp())}"
+        random_suffix = ''.join(secrets.choice(alphabet) for _ in range(4))
+        return f"GRP-{int(datetime.utcnow().timestamp())}{random_suffix}"
     
     @staticmethod
     def calculate_group_discount(
@@ -405,17 +408,19 @@ class GroupBookingService:
             # Use proportional share
             booking_price = group_booking.total_price / group_booking.total_rooms
         
-        # Generate booking number
+        # Generate booking number using cryptographically secure random
-        import random
         prefix = 'BK'
         ts = int(datetime.utcnow().timestamp() * 1000)
-        rand = random.randint(1000, 9999)
+        # Use secrets.randbelow() instead of random.randint() for security
+        rand = secrets.randbelow(9000) + 1000  # Random number between 1000-9999
         booking_number = f'{prefix}-{ts}-{rand}'
         
         # Ensure uniqueness
         existing = db.query(Booking).filter(Booking.booking_number == booking_number).first()
         if existing:
-            booking_number = f'{prefix}-{ts}-{rand + 1}'
+            # If collision, generate new secure random number
+            rand = secrets.randbelow(9000) + 1000
+            booking_number = f'{prefix}-{ts}-{rand}'
         
         # Create booking
         booking = Booking(

Backend/src/compliance/models/__init__.py

@@ -0,0 +1,26 @@
+"""
+GDPR Compliance Models.
+"""
+from .gdpr_request import GDPRRequest, GDPRRequestType, GDPRRequestStatus
+from .consent import Consent, ConsentType, ConsentStatus
+from .data_processing_record import DataProcessingRecord, ProcessingCategory, LegalBasis
+from .data_breach import DataBreach, BreachType, BreachStatus
+from .data_retention import RetentionRule, DataRetentionLog
+
+__all__ = [
+    'GDPRRequest',
+    'GDPRRequestType',
+    'GDPRRequestStatus',
+    'Consent',
+    'ConsentType',
+    'ConsentStatus',
+    'DataProcessingRecord',
+    'ProcessingCategory',
+    'LegalBasis',
+    'DataBreach',
+    'BreachType',
+    'BreachStatus',
+    'RetentionRule',
+    'DataRetentionLog',
+]
+

Backend/src/compliance/models/consent.py

@@ -0,0 +1,64 @@
+"""
+GDPR Consent Management Model.
+"""
+from sqlalchemy import Column, Integer, String, Text, DateTime, ForeignKey, Enum, JSON, Boolean
+from sqlalchemy.orm import relationship
+from datetime import datetime
+import enum
+from ...shared.config.database import Base
+
+class ConsentType(str, enum.Enum):
+    """Types of consent that can be given or withdrawn."""
+    marketing = "marketing"
+    analytics = "analytics"
+    necessary = "necessary"
+    preferences = "preferences"
+    third_party_sharing = "third_party_sharing"
+    profiling = "profiling"
+    automated_decision_making = "automated_decision_making"
+
+class ConsentStatus(str, enum.Enum):
+    """Status of consent."""
+    granted = "granted"
+    withdrawn = "withdrawn"
+    pending = "pending"
+    expired = "expired"
+
+class Consent(Base):
+    """Model for tracking user consent for GDPR compliance."""
+    __tablename__ = 'consents'
+    
+    id = Column(Integer, primary_key=True, index=True, autoincrement=True)
+    user_id = Column(Integer, ForeignKey('users.id'), nullable=True, index=True)  # Nullable for anonymous users
+    user_email = Column(String(255), nullable=True, index=True)  # Email for anonymous users
+    is_anonymous = Column(Boolean, default=False, nullable=False, index=True)  # Flag for anonymous consent
+    consent_type = Column(Enum(ConsentType), nullable=False, index=True)
+    status = Column(Enum(ConsentStatus), default=ConsentStatus.granted, nullable=False, index=True)
+    
+    # Consent details
+    granted_at = Column(DateTime, nullable=True)
+    withdrawn_at = Column(DateTime, nullable=True)
+    expires_at = Column(DateTime, nullable=True)  # For time-limited consent
+    
+    # Legal basis (Article 6 GDPR)
+    legal_basis = Column(String(100), nullable=True)  # consent, contract, legal_obligation, vital_interests, public_task, legitimate_interests
+    
+    # Consent method
+    consent_method = Column(String(50), nullable=True)  # explicit, implicit, pre_checked
+    consent_version = Column(String(20), nullable=True)  # Version of privacy policy when consent was given
+    
+    # Metadata
+    ip_address = Column(String(45), nullable=True)
+    user_agent = Column(String(255), nullable=True)
+    source = Column(String(100), nullable=True)  # Where consent was given (registration, cookie_banner, etc.)
+    
+    # Additional data
+    extra_metadata = Column(JSON, nullable=True)
+    
+    # Timestamps
+    created_at = Column(DateTime, default=datetime.utcnow, nullable=False, index=True)
+    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow, nullable=False)
+    
+    # Relationships
+    user = relationship('User', foreign_keys=[user_id])
+

Backend/src/compliance/models/data_breach.py

@@ -0,0 +1,70 @@
+"""
+GDPR Data Breach Notification Model (Article 33-34 GDPR).
+"""
+from sqlalchemy import Column, Integer, String, Text, DateTime, ForeignKey, Enum, JSON, Boolean
+from sqlalchemy.orm import relationship
+from datetime import datetime
+import enum
+from ...shared.config.database import Base
+
+class BreachType(str, enum.Enum):
+    """Types of data breaches."""
+    confidentiality = "confidentiality"  # Unauthorized disclosure
+    integrity = "integrity"  # Unauthorized alteration
+    availability = "availability"  # Unauthorized destruction or loss
+
+class BreachStatus(str, enum.Enum):
+    """Status of breach notification."""
+    detected = "detected"
+    investigating = "investigating"
+    contained = "contained"
+    reported_to_authority = "reported_to_authority"
+    notified_data_subjects = "notified_data_subjects"
+    resolved = "resolved"
+
+class DataBreach(Base):
+    """Data breach notification record (Articles 33-34 GDPR)."""
+    __tablename__ = 'data_breaches'
+    
+    id = Column(Integer, primary_key=True, index=True, autoincrement=True)
+    
+    # Breach details
+    breach_type = Column(Enum(BreachType), nullable=False, index=True)
+    status = Column(Enum(BreachStatus), default=BreachStatus.detected, nullable=False, index=True)
+    
+    # Description
+    description = Column(Text, nullable=False)  # Nature of the breach
+    affected_data_categories = Column(JSON, nullable=True)  # Categories of personal data affected
+    affected_data_subjects = Column(JSON, nullable=True)  # Approximate number of affected individuals
+    
+    # Timeline
+    detected_at = Column(DateTime, nullable=False, index=True)
+    occurred_at = Column(DateTime, nullable=True)  # When breach occurred (if known)
+    contained_at = Column(DateTime, nullable=True)
+    
+    # Notification
+    reported_to_authority_at = Column(DateTime, nullable=True)  # Article 33 - 72 hours
+    authority_reference = Column(String(255), nullable=True)  # Reference from supervisory authority
+    notified_data_subjects_at = Column(DateTime, nullable=True)  # Article 34 - without undue delay
+    notification_method = Column(String(100), nullable=True)  # email, public_notice, etc.
+    
+    # Risk assessment
+    likely_consequences = Column(Text, nullable=True)
+    measures_proposed = Column(Text, nullable=True)  # Measures to address the breach
+    risk_level = Column(String(20), nullable=True)  # low, medium, high
+    
+    # Reporting
+    reported_by = Column(Integer, ForeignKey('users.id'), nullable=False)  # Who detected/reported
+    investigated_by = Column(Integer, ForeignKey('users.id'), nullable=True)  # DPO or responsible person
+    
+    # Additional details
+    extra_metadata = Column(JSON, nullable=True)
+    
+    # Timestamps
+    created_at = Column(DateTime, default=datetime.utcnow, nullable=False, index=True)
+    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow, nullable=False)
+    
+    # Relationships
+    reporter = relationship('User', foreign_keys=[reported_by])
+    investigator = relationship('User', foreign_keys=[investigated_by])
+

Backend/src/compliance/models/data_processing_record.py

@@ -0,0 +1,78 @@
+"""
+GDPR Data Processing Records Model (Article 30 GDPR).
+"""
+from sqlalchemy import Column, Integer, String, Text, DateTime, ForeignKey, Enum, JSON, Boolean
+from sqlalchemy.orm import relationship
+from datetime import datetime
+import enum
+from ...shared.config.database import Base
+
+class ProcessingCategory(str, enum.Enum):
+    """Categories of data processing."""
+    collection = "collection"
+    storage = "storage"
+    usage = "usage"
+    sharing = "sharing"
+    deletion = "deletion"
+    anonymization = "anonymization"
+    transfer = "transfer"
+
+class LegalBasis(str, enum.Enum):
+    """Legal basis for processing (Article 6 GDPR)."""
+    consent = "consent"
+    contract = "contract"
+    legal_obligation = "legal_obligation"
+    vital_interests = "vital_interests"
+    public_task = "public_task"
+    legitimate_interests = "legitimate_interests"
+
+class DataProcessingRecord(Base):
+    """Record of data processing activities (Article 30 GDPR requirement)."""
+    __tablename__ = 'data_processing_records'
+    
+    id = Column(Integer, primary_key=True, index=True, autoincrement=True)
+    
+    # Processing details
+    processing_category = Column(Enum(ProcessingCategory), nullable=False, index=True)
+    legal_basis = Column(Enum(LegalBasis), nullable=False, index=True)
+    purpose = Column(Text, nullable=False)  # Purpose of processing
+    
+    # Data categories
+    data_categories = Column(JSON, nullable=True)  # List of data categories processed
+    data_subjects = Column(JSON, nullable=True)  # Categories of data subjects
+    
+    # Recipients
+    recipients = Column(JSON, nullable=True)  # Categories of recipients (internal, third_party, etc.)
+    third_parties = Column(JSON, nullable=True)  # Specific third parties if any
+    
+    # Transfers
+    transfers_to_third_countries = Column(Boolean, default=False, nullable=False)
+    transfer_countries = Column(JSON, nullable=True)  # List of countries
+    safeguards = Column(Text, nullable=True)  # Safeguards for transfers
+    
+    # Retention
+    retention_period = Column(String(100), nullable=True)  # How long data is retained
+    retention_criteria = Column(Text, nullable=True)  # Criteria for determining retention period
+    
+    # Security measures
+    security_measures = Column(Text, nullable=True)
+    
+    # Related entities
+    user_id = Column(Integer, ForeignKey('users.id'), nullable=True, index=True)  # If specific to a user
+    related_booking_id = Column(Integer, nullable=True, index=True)
+    related_payment_id = Column(Integer, nullable=True, index=True)
+    
+    # Processing details
+    processed_by = Column(Integer, ForeignKey('users.id'), nullable=True)  # Staff/admin who processed
+    processing_timestamp = Column(DateTime, default=datetime.utcnow, nullable=False, index=True)
+    
+    # Additional metadata
+    extra_metadata = Column(JSON, nullable=True)
+    
+    # Timestamps
+    created_at = Column(DateTime, default=datetime.utcnow, nullable=False, index=True)
+    
+    # Relationships
+    user = relationship('User', foreign_keys=[user_id])
+    processor = relationship('User', foreign_keys=[processed_by])
+

Backend/src/compliance/models/data_retention.py

@@ -0,0 +1,75 @@
+"""
+GDPR Data Retention Policy Model.
+"""
+from sqlalchemy import Column, Integer, String, Text, DateTime, ForeignKey, Enum, JSON, Boolean
+from sqlalchemy.orm import relationship
+from datetime import datetime, timedelta
+import enum
+from ...shared.config.database import Base
+
+class RetentionRule(Base):
+    """Data retention rules for different data types."""
+    __tablename__ = 'retention_rules'
+    
+    id = Column(Integer, primary_key=True, index=True, autoincrement=True)
+    
+    # Rule details
+    data_category = Column(String(100), nullable=False, unique=True, index=True)  # user_data, booking_data, payment_data, etc.
+    retention_period_days = Column(Integer, nullable=False)  # Number of days to retain
+    retention_period_months = Column(Integer, nullable=True)  # Alternative: months
+    retention_period_years = Column(Integer, nullable=True)  # Alternative: years
+    
+    # Legal basis
+    legal_basis = Column(Text, nullable=True)  # Why we retain for this period
+    legal_requirement = Column(Text, nullable=True)  # Specific legal requirement if any
+    
+    # Action after retention
+    action_after_retention = Column(String(50), nullable=False, default='anonymize')  # delete, anonymize, archive
+    
+    # Conditions
+    conditions = Column(JSON, nullable=True)  # Additional conditions (e.g., active bookings)
+    
+    # Status
+    is_active = Column(Boolean, default=True, nullable=False, index=True)
+    
+    # Metadata
+    description = Column(Text, nullable=True)
+    created_by = Column(Integer, ForeignKey('users.id'), nullable=True)
+    
+    # Timestamps
+    created_at = Column(DateTime, default=datetime.utcnow, nullable=False)
+    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow, nullable=False)
+    
+    # Relationships
+    creator = relationship('User', foreign_keys=[created_by])
+
+class DataRetentionLog(Base):
+    """Log of data retention actions performed."""
+    __tablename__ = 'data_retention_logs'
+    
+    id = Column(Integer, primary_key=True, index=True, autoincrement=True)
+    
+    # Retention action
+    retention_rule_id = Column(Integer, ForeignKey('retention_rules.id'), nullable=False, index=True)
+    data_category = Column(String(100), nullable=False, index=True)
+    action_taken = Column(String(50), nullable=False)  # deleted, anonymized, archived
+    
+    # Affected records
+    records_affected = Column(Integer, nullable=False, default=0)
+    affected_ids = Column(JSON, nullable=True)  # IDs of affected records (for audit)
+    
+    # Execution
+    executed_by = Column(Integer, ForeignKey('users.id'), nullable=True)  # System or admin
+    executed_at = Column(DateTime, default=datetime.utcnow, nullable=False, index=True)
+    
+    # Results
+    success = Column(Boolean, default=True, nullable=False)
+    error_message = Column(Text, nullable=True)
+    
+    # Metadata
+    extra_metadata = Column(JSON, nullable=True)
+    
+    # Relationships
+    retention_rule = relationship('RetentionRule', foreign_keys=[retention_rule_id])
+    executor = relationship('User', foreign_keys=[executed_by])
+

Backend/src/compliance/models/gdpr_request.py

@@ -1,7 +1,7 @@
 """
 GDPR compliance models for data export and deletion requests.
 """
-from sqlalchemy import Column, Integer, String, Text, DateTime, ForeignKey, Enum, JSON
+from sqlalchemy import Column, Integer, String, Text, DateTime, ForeignKey, Enum, JSON, Boolean
 from sqlalchemy.orm import relationship
 from datetime import datetime
 import enum
@@ -27,9 +27,10 @@ class GDPRRequest(Base):
     request_type = Column(Enum(GDPRRequestType), nullable=False, index=True)
     status = Column(Enum(GDPRRequestStatus), default=GDPRRequestStatus.pending, nullable=False, index=True)
     
-    # User making the request
+    # User making the request (nullable for anonymous users)
-    user_id = Column(Integer, ForeignKey('users.id'), nullable=False, index=True)
+    user_id = Column(Integer, ForeignKey('users.id'), nullable=True, index=True)
-    user_email = Column(String(255), nullable=False)  # Store email even if user is deleted
+    user_email = Column(String(255), nullable=False)  # Required: email for anonymous or registered users
+    is_anonymous = Column(Boolean, default=False, nullable=False, index=True)  # Flag for anonymous requests
     
     # Request details
     request_data = Column(JSON, nullable=True)  # Additional request parameters

Backend/src/compliance/routes/gdpr_admin_routes.py

@@ -0,0 +1,340 @@
+"""
+Admin routes for GDPR compliance management.
+"""
+from fastapi import APIRouter, Depends, HTTPException, Query, Body
+from sqlalchemy.orm import Session
+from typing import Optional, Dict, Any, List
+from pydantic import BaseModel
+from datetime import datetime
+
+from ...shared.config.database import get_db
+from ...shared.config.logging_config import get_logger
+from ...security.middleware.auth import authorize_roles
+from ...auth.models.user import User
+from ..services.breach_service import breach_service
+from ..services.retention_service import retention_service
+from ..services.data_processing_service import data_processing_service
+from ..models.data_breach import BreachType, BreachStatus
+from ...shared.utils.response_helpers import success_response
+
+logger = get_logger(__name__)
+router = APIRouter(prefix='/gdpr/admin', tags=['gdpr-admin'])
+
+# Data Breach Management
+
+class BreachCreateRequest(BaseModel):
+    breach_type: str
+    description: str
+    affected_data_categories: Optional[List[str]] = None
+    affected_data_subjects: Optional[int] = None
+    occurred_at: Optional[str] = None
+    likely_consequences: Optional[str] = None
+    measures_proposed: Optional[str] = None
+    risk_level: Optional[str] = None
+
+@router.post('/breaches')
+async def create_breach(
+    breach_data: BreachCreateRequest,
+    current_user: User = Depends(authorize_roles('admin')),
+    db: Session = Depends(get_db)
+):
+    """Create a data breach record (admin only)."""
+    try:
+        try:
+            breach_type_enum = BreachType(breach_data.breach_type)
+        except ValueError:
+            raise HTTPException(status_code=400, detail=f'Invalid breach type: {breach_data.breach_type}')
+        
+        occurred_at = None
+        if breach_data.occurred_at:
+            occurred_at = datetime.fromisoformat(breach_data.occurred_at.replace('Z', '+00:00'))
+        
+        breach = await breach_service.create_breach(
+            db=db,
+            breach_type=breach_type_enum,
+            description=breach_data.description,
+            reported_by=current_user.id,
+            affected_data_categories=breach_data.affected_data_categories,
+            affected_data_subjects=breach_data.affected_data_subjects,
+            occurred_at=occurred_at,
+            likely_consequences=breach_data.likely_consequences,
+            measures_proposed=breach_data.measures_proposed,
+            risk_level=breach_data.risk_level
+        )
+        
+        return success_response(
+            data={
+                'breach_id': breach.id,
+                'status': breach.status.value,
+                'detected_at': breach.detected_at.isoformat()
+            },
+            message='Data breach record created'
+        )
+    except HTTPException:
+        raise
+    except Exception as e:
+        logger.error(f'Error creating breach: {str(e)}', exc_info=True)
+        raise HTTPException(status_code=500, detail=str(e))
+
+@router.get('/breaches')
+async def get_breaches(
+    status: Optional[str] = Query(None),
+    page: int = Query(1, ge=1),
+    limit: int = Query(20, ge=1, le=100),
+    current_user: User = Depends(authorize_roles('admin')),
+    db: Session = Depends(get_db)
+):
+    """Get all data breaches (admin only)."""
+    try:
+        status_enum = None
+        if status:
+            try:
+                status_enum = BreachStatus(status)
+            except ValueError:
+                raise HTTPException(status_code=400, detail=f'Invalid status: {status}')
+        
+        offset = (page - 1) * limit
+        breaches = breach_service.get_breaches(
+            db=db,
+            status=status_enum,
+            limit=limit,
+            offset=offset
+        )
+        
+        return success_response(data={
+            'breaches': [{
+                'id': breach.id,
+                'breach_type': breach.breach_type.value,
+                'status': breach.status.value,
+                'description': breach.description,
+                'risk_level': breach.risk_level,
+                'detected_at': breach.detected_at.isoformat(),
+                'reported_to_authority_at': breach.reported_to_authority_at.isoformat() if breach.reported_to_authority_at else None,
+                'notified_data_subjects_at': breach.notified_data_subjects_at.isoformat() if breach.notified_data_subjects_at else None,
+            } for breach in breaches]
+        })
+    except HTTPException:
+        raise
+    except Exception as e:
+        logger.error(f'Error getting breaches: {str(e)}', exc_info=True)
+        raise HTTPException(status_code=500, detail=str(e))
+
+@router.post('/breaches/{breach_id}/report-authority')
+async def report_breach_to_authority(
+    breach_id: int,
+    authority_reference: str = Body(...),
+    current_user: User = Depends(authorize_roles('admin')),
+    db: Session = Depends(get_db)
+):
+    """Report breach to supervisory authority (admin only)."""
+    try:
+        breach = await breach_service.report_to_authority(
+            db=db,
+            breach_id=breach_id,
+            authority_reference=authority_reference,
+            reported_by=current_user.id
+        )
+        
+        return success_response(
+            data={
+                'breach_id': breach.id,
+                'authority_reference': breach.authority_reference,
+                'reported_at': breach.reported_to_authority_at.isoformat()
+            },
+            message='Breach reported to supervisory authority'
+        )
+    except ValueError as e:
+        raise HTTPException(status_code=404, detail=str(e))
+    except Exception as e:
+        logger.error(f'Error reporting breach: {str(e)}', exc_info=True)
+        raise HTTPException(status_code=500, detail=str(e))
+
+@router.post('/breaches/{breach_id}/notify-subjects')
+async def notify_data_subjects(
+    breach_id: int,
+    notification_method: str = Body(...),
+    current_user: User = Depends(authorize_roles('admin')),
+    db: Session = Depends(get_db)
+):
+    """Notify affected data subjects (admin only)."""
+    try:
+        breach = await breach_service.notify_data_subjects(
+            db=db,
+            breach_id=breach_id,
+            notification_method=notification_method,
+            notified_by=current_user.id
+        )
+        
+        return success_response(
+            data={
+                'breach_id': breach.id,
+                'notification_method': breach.notification_method,
+                'notified_at': breach.notified_data_subjects_at.isoformat()
+            },
+            message='Data subjects notified'
+        )
+    except ValueError as e:
+        raise HTTPException(status_code=404, detail=str(e))
+    except Exception as e:
+        logger.error(f'Error notifying subjects: {str(e)}', exc_info=True)
+        raise HTTPException(status_code=500, detail=str(e))
+
+# Data Retention Management
+
+class RetentionRuleCreateRequest(BaseModel):
+    data_category: str
+    retention_period_days: int
+    retention_period_months: Optional[int] = None
+    retention_period_years: Optional[int] = None
+    legal_basis: Optional[str] = None
+    legal_requirement: Optional[str] = None
+    action_after_retention: str = 'anonymize'
+    conditions: Optional[Dict[str, Any]] = None
+    description: Optional[str] = None
+
+@router.post('/retention-rules')
+async def create_retention_rule(
+    rule_data: RetentionRuleCreateRequest,
+    current_user: User = Depends(authorize_roles('admin')),
+    db: Session = Depends(get_db)
+):
+    """Create a data retention rule (admin only)."""
+    try:
+        rule = retention_service.create_retention_rule(
+            db=db,
+            data_category=rule_data.data_category,
+            retention_period_days=rule_data.retention_period_days,
+            retention_period_months=rule_data.retention_period_months,
+            retention_period_years=rule_data.retention_period_years,
+            legal_basis=rule_data.legal_basis,
+            legal_requirement=rule_data.legal_requirement,
+            action_after_retention=rule_data.action_after_retention,
+            conditions=rule_data.conditions,
+            description=rule_data.description,
+            created_by=current_user.id
+        )
+        
+        return success_response(
+            data={
+                'rule_id': rule.id,
+                'data_category': rule.data_category,
+                'retention_period_days': rule.retention_period_days
+            },
+            message='Retention rule created successfully'
+        )
+    except Exception as e:
+        logger.error(f'Error creating retention rule: {str(e)}', exc_info=True)
+        raise HTTPException(status_code=500, detail=str(e))
+
+@router.get('/retention-rules')
+async def get_retention_rules(
+    is_active: Optional[bool] = Query(None),
+    current_user: User = Depends(authorize_roles('admin')),
+    db: Session = Depends(get_db)
+):
+    """Get retention rules (admin only)."""
+    try:
+        rules = retention_service.get_retention_rules(db=db, is_active=is_active)
+        
+        return success_response(data={
+            'rules': [{
+                'id': rule.id,
+                'data_category': rule.data_category,
+                'retention_period_days': rule.retention_period_days,
+                'action_after_retention': rule.action_after_retention,
+                'is_active': rule.is_active,
+                'legal_basis': rule.legal_basis
+            } for rule in rules]
+        })
+    except Exception as e:
+        logger.error(f'Error getting retention rules: {str(e)}', exc_info=True)
+        raise HTTPException(status_code=500, detail=str(e))
+
+@router.get('/retention-logs')
+async def get_retention_logs(
+    data_category: Optional[str] = Query(None),
+    page: int = Query(1, ge=1),
+    limit: int = Query(50, ge=1, le=100),
+    current_user: User = Depends(authorize_roles('admin')),
+    db: Session = Depends(get_db)
+):
+    """Get retention action logs (admin only)."""
+    try:
+        offset = (page - 1) * limit
+        logs = retention_service.get_retention_logs(
+            db=db,
+            data_category=data_category,
+            limit=limit,
+            offset=offset
+        )
+        
+        return success_response(data={
+            'logs': [{
+                'id': log.id,
+                'data_category': log.data_category,
+                'action_taken': log.action_taken,
+                'records_affected': log.records_affected,
+                'executed_at': log.executed_at.isoformat(),
+                'success': log.success
+            } for log in logs]
+        })
+    except Exception as e:
+        logger.error(f'Error getting retention logs: {str(e)}', exc_info=True)
+        raise HTTPException(status_code=500, detail=str(e))
+
+# Data Processing Records (Admin View)
+
+@router.get('/processing-records')
+async def get_all_processing_records(
+    user_id: Optional[int] = Query(None),
+    processing_category: Optional[str] = Query(None),
+    legal_basis: Optional[str] = Query(None),
+    page: int = Query(1, ge=1),
+    limit: int = Query(50, ge=1, le=100),
+    current_user: User = Depends(authorize_roles('admin')),
+    db: Session = Depends(get_db)
+):
+    """Get all data processing records (admin only)."""
+    try:
+        from ..models.data_processing_record import ProcessingCategory, LegalBasis
+        
+        category_enum = None
+        if processing_category:
+            try:
+                category_enum = ProcessingCategory(processing_category)
+            except ValueError:
+                raise HTTPException(status_code=400, detail=f'Invalid processing category: {processing_category}')
+        
+        basis_enum = None
+        if legal_basis:
+            try:
+                basis_enum = LegalBasis(legal_basis)
+            except ValueError:
+                raise HTTPException(status_code=400, detail=f'Invalid legal basis: {legal_basis}')
+        
+        offset = (page - 1) * limit
+        records = data_processing_service.get_processing_records(
+            db=db,
+            user_id=user_id,
+            processing_category=category_enum,
+            legal_basis=basis_enum,
+            limit=limit,
+            offset=offset
+        )
+        
+        return success_response(data={
+            'records': [{
+                'id': record.id,
+                'processing_category': record.processing_category.value,
+                'legal_basis': record.legal_basis.value,
+                'purpose': record.purpose,
+                'processing_timestamp': record.processing_timestamp.isoformat(),
+                'user_id': record.user_id
+            } for record in records]
+        })
+    except HTTPException:
+        raise
+    except Exception as e:
+        logger.error(f'Error getting processing records: {str(e)}', exc_info=True)
+        raise HTTPException(status_code=500, detail=str(e))
+

Backend/src/compliance/routes/gdpr_routes.py

@@ -3,46 +3,78 @@ GDPR compliance routes for data export and deletion.
 """
 from fastapi import APIRouter, Depends, HTTPException, Query, Response
 from sqlalchemy.orm import Session, noload
+from sqlalchemy import or_
 from typing import Optional
+from datetime import datetime
 from ...shared.config.database import get_db
 from ...shared.config.logging_config import get_logger
-from ...security.middleware.auth import get_current_user, authorize_roles
+from ...security.middleware.auth import get_current_user, authorize_roles, get_current_user_optional
 from ...auth.models.user import User
 from ..services.gdpr_service import gdpr_service
+from ..services.consent_service import consent_service
+from ..services.data_processing_service import data_processing_service
 from ..models.gdpr_request import GDPRRequest, GDPRRequestType, GDPRRequestStatus
+from ..models.consent import ConsentType, ConsentStatus
 from ...shared.utils.response_helpers import success_response
 from fastapi import Request
+from pydantic import BaseModel
+from typing import Dict, Any, Optional, List
 
 logger = get_logger(__name__)
 router = APIRouter(prefix='/gdpr', tags=['gdpr'])
 
+class AnonymousExportRequest(BaseModel):
+    email: str
+
 @router.post('/export')
 async def request_data_export(
     request: Request,
-    current_user: User = Depends(get_current_user),
+    anonymous_request: Optional[AnonymousExportRequest] = None,
+    current_user: Optional[User] = Depends(get_current_user_optional),
     db: Session = Depends(get_db)
 ):
-    """Request export of user's personal data (GDPR)."""
+    """Request export of user's personal data (GDPR) - supports both authenticated and anonymous users."""
     try:
         client_ip = request.client.host if request.client else None
         user_agent = request.headers.get('User-Agent')
         
-        gdpr_request = await gdpr_service.create_data_export_request(
+        # Check if authenticated or anonymous
-            db=db,
+        if current_user:
-            user_id=current_user.id,
+            # Authenticated user
-            ip_address=client_ip,
+            gdpr_request = await gdpr_service.create_data_export_request(
-            user_agent=user_agent
+                db=db,
-        )
+                user_id=current_user.id,
+                ip_address=client_ip,
+                user_agent=user_agent,
+                is_anonymous=False
+            )
+        elif anonymous_request and anonymous_request.email:
+            # Anonymous user - requires email
+            gdpr_request = await gdpr_service.create_data_export_request(
+                db=db,
+                user_email=anonymous_request.email,
+                ip_address=client_ip,
+                user_agent=user_agent,
+                is_anonymous=True
+            )
+        else:
+            raise HTTPException(
+                status_code=400,
+                detail='Either authentication required or email must be provided for anonymous requests'
+            )
         
         return success_response(
             data={
                 'request_id': gdpr_request.id,
                 'verification_token': gdpr_request.verification_token,
                 'status': gdpr_request.status.value,
-                'expires_at': gdpr_request.expires_at.isoformat() if gdpr_request.expires_at else None
+                'expires_at': gdpr_request.expires_at.isoformat() if gdpr_request.expires_at else None,
+                'is_anonymous': gdpr_request.is_anonymous
             },
             message='Data export request created. You will receive an email with download link once ready.'
         )
+    except ValueError as e:
+        raise HTTPException(status_code=400, detail=str(e))
     except Exception as e:
         logger.error(f'Error creating data export request: {str(e)}', exc_info=True)
         raise HTTPException(status_code=500, detail=str(e))
@@ -51,20 +83,26 @@ async def request_data_export(
 async def get_export_data(
     request_id: int,
     verification_token: str = Query(...),
-    current_user: User = Depends(get_current_user),
+    current_user: Optional[User] = Depends(get_current_user_optional),
     db: Session = Depends(get_db)
 ):
-    """Get exported user data."""
+    """Get exported user data - supports both authenticated and anonymous users via verification token."""
     try:
-        gdpr_request = db.query(GDPRRequest).options(
+        # Build query - verification token is required for both authenticated and anonymous
+        query = db.query(GDPRRequest).options(
             noload(GDPRRequest.user),
             noload(GDPRRequest.processor)
         ).filter(
             GDPRRequest.id == request_id,
-            GDPRRequest.user_id == current_user.id,
             GDPRRequest.verification_token == verification_token,
             GDPRRequest.request_type == GDPRRequestType.data_export
-        ).first()
+        )
+        
+        # For authenticated users, also verify user_id matches
+        if current_user:
+            query = query.filter(GDPRRequest.user_id == current_user.id)
+        
+        gdpr_request = query.first()
         
         if not gdpr_request:
             raise HTTPException(status_code=404, detail='Export request not found or invalid token')
@@ -73,8 +111,10 @@ async def get_export_data(
             # Process export
             export_data = await gdpr_service.export_user_data(
                 db=db,
-                user_id=current_user.id,
+                user_id=gdpr_request.user_id,
-                request_id=request_id
+                user_email=gdpr_request.user_email,
+                request_id=request_id,
+                is_anonymous=gdpr_request.is_anonymous
             )
             return success_response(data=export_data)
         elif gdpr_request.status == GDPRRequestStatus.completed and gdpr_request.export_file_path:
@@ -97,32 +137,57 @@ async def get_export_data(
         logger.error(f'Error getting export data: {str(e)}', exc_info=True)
         raise HTTPException(status_code=500, detail=str(e))
 
+class AnonymousDeletionRequest(BaseModel):
+    email: str
+
 @router.post('/delete')
 async def request_data_deletion(
     request: Request,
-    current_user: User = Depends(get_current_user),
+    anonymous_request: Optional[AnonymousDeletionRequest] = None,
+    current_user: Optional[User] = Depends(get_current_user_optional),
     db: Session = Depends(get_db)
 ):
-    """Request deletion of user's personal data (GDPR - Right to be Forgotten)."""
+    """Request deletion of user's personal data (GDPR - Right to be Forgotten) - supports anonymous users."""
     try:
         client_ip = request.client.host if request.client else None
         user_agent = request.headers.get('User-Agent')
         
-        gdpr_request = await gdpr_service.create_data_deletion_request(
+        # Check if authenticated or anonymous
-            db=db,
+        if current_user:
-            user_id=current_user.id,
+            # Authenticated user
-            ip_address=client_ip,
+            gdpr_request = await gdpr_service.create_data_deletion_request(
-            user_agent=user_agent
+                db=db,
-        )
+                user_id=current_user.id,
+                ip_address=client_ip,
+                user_agent=user_agent,
+                is_anonymous=False
+            )
+        elif anonymous_request and anonymous_request.email:
+            # Anonymous user - requires email
+            gdpr_request = await gdpr_service.create_data_deletion_request(
+                db=db,
+                user_email=anonymous_request.email,
+                ip_address=client_ip,
+                user_agent=user_agent,
+                is_anonymous=True
+            )
+        else:
+            raise HTTPException(
+                status_code=400,
+                detail='Either authentication required or email must be provided for anonymous requests'
+            )
         
         return success_response(
             data={
                 'request_id': gdpr_request.id,
                 'verification_token': gdpr_request.verification_token,
-                'status': gdpr_request.status.value
+                'status': gdpr_request.status.value,
+                'is_anonymous': gdpr_request.is_anonymous
             },
             message='Data deletion request created. Please verify via email to proceed.'
         )
+    except ValueError as e:
+        raise HTTPException(status_code=400, detail=str(e))
     except Exception as e:
         logger.error(f'Error creating data deletion request: {str(e)}', exc_info=True)
         raise HTTPException(status_code=500, detail=str(e))
@@ -131,21 +196,27 @@ async def request_data_deletion(
 async def confirm_data_deletion(
     request_id: int,
     verification_token: str = Query(...),
-    current_user: User = Depends(get_current_user),
+    current_user: Optional[User] = Depends(get_current_user_optional),
     db: Session = Depends(get_db)
 ):
-    """Confirm and process data deletion request."""
+    """Confirm and process data deletion request - supports anonymous users via verification token."""
     try:
-        gdpr_request = db.query(GDPRRequest).options(
+        # Build query - verification token is required for both authenticated and anonymous
+        query = db.query(GDPRRequest).options(
             noload(GDPRRequest.user),
             noload(GDPRRequest.processor)
         ).filter(
             GDPRRequest.id == request_id,
-            GDPRRequest.user_id == current_user.id,
             GDPRRequest.verification_token == verification_token,
             GDPRRequest.request_type == GDPRRequestType.data_deletion,
             GDPRRequest.status == GDPRRequestStatus.pending
-        ).first()
+        )
+        
+        # For authenticated users, also verify user_id matches
+        if current_user:
+            query = query.filter(GDPRRequest.user_id == current_user.id)
+        
+        gdpr_request = query.first()
         
         if not gdpr_request:
             raise HTTPException(status_code=404, detail='Deletion request not found or already processed')
@@ -153,14 +224,16 @@ async def confirm_data_deletion(
         # Process deletion
         deletion_log = await gdpr_service.delete_user_data(
             db=db,
-            user_id=current_user.id,
+            user_id=gdpr_request.user_id,
+            user_email=gdpr_request.user_email,
             request_id=request_id,
-            processed_by=current_user.id
+            processed_by=current_user.id if current_user else None,
+            is_anonymous=gdpr_request.is_anonymous
         )
         
         return success_response(
             data=deletion_log,
-            message='Your data has been deleted successfully.'
+            message=deletion_log.get('summary', {}).get('message', 'Your data has been deleted successfully.')
         )
     except HTTPException:
         raise
@@ -173,13 +246,17 @@ async def get_user_gdpr_requests(
     current_user: User = Depends(get_current_user),
     db: Session = Depends(get_db)
 ):
-    """Get user's GDPR requests."""
+    """Get user's GDPR requests (both authenticated and anonymous requests by email)."""
     try:
+        # Get requests by user_id (authenticated) or by email (includes anonymous)
         requests = db.query(GDPRRequest).options(
             noload(GDPRRequest.user),
             noload(GDPRRequest.processor)
         ).filter(
-            GDPRRequest.user_id == current_user.id
+            or_(
+                GDPRRequest.user_id == current_user.id,
+                GDPRRequest.user_email == current_user.email
+            )
         ).order_by(GDPRRequest.created_at.desc()).all()
         
         return success_response(data={
@@ -187,6 +264,7 @@ async def get_user_gdpr_requests(
                 'id': req.id,
                 'request_type': req.request_type.value,
                 'status': req.status.value,
+                'is_anonymous': req.is_anonymous,
                 'created_at': req.created_at.isoformat() if req.created_at else None,
                 'processed_at': req.processed_at.isoformat() if req.processed_at else None,
             } for req in requests]
@@ -270,3 +348,272 @@ async def delete_gdpr_request(
         logger.error(f'Error deleting GDPR request: {str(e)}', exc_info=True)
         raise HTTPException(status_code=500, detail=str(e))
 
+# GDPR Rights - Additional Routes
+
+class DataRectificationRequest(BaseModel):
+    corrections: Dict[str, Any]  # e.g., {"full_name": "New Name", "email": "new@email.com"}
+
+@router.post('/rectify')
+async def request_data_rectification(
+    request: Request,
+    rectification_data: DataRectificationRequest,
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """Request data rectification (Article 16 GDPR - Right to rectification)."""
+    try:
+        client_ip = request.client.host if request.client else None
+        user_agent = request.headers.get('User-Agent')
+        
+        gdpr_request = await gdpr_service.request_data_rectification(
+            db=db,
+            user_id=current_user.id,
+            corrections=rectification_data.corrections,
+            ip_address=client_ip,
+            user_agent=user_agent
+        )
+        
+        return success_response(
+            data={
+                'request_id': gdpr_request.id,
+                'verification_token': gdpr_request.verification_token,
+                'status': gdpr_request.status.value
+            },
+            message='Data rectification request created. An admin will review and process your request.'
+        )
+    except Exception as e:
+        logger.error(f'Error creating rectification request: {str(e)}', exc_info=True)
+        raise HTTPException(status_code=500, detail=str(e))
+
+class ProcessingRestrictionRequest(BaseModel):
+    reason: str
+
+@router.post('/restrict')
+async def request_processing_restriction(
+    request: Request,
+    restriction_data: ProcessingRestrictionRequest,
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """Request restriction of processing (Article 18 GDPR)."""
+    try:
+        client_ip = request.client.host if request.client else None
+        user_agent = request.headers.get('User-Agent')
+        
+        gdpr_request = await gdpr_service.request_processing_restriction(
+            db=db,
+            user_id=current_user.id,
+            reason=restriction_data.reason,
+            ip_address=client_ip,
+            user_agent=user_agent
+        )
+        
+        return success_response(
+            data={
+                'request_id': gdpr_request.id,
+                'verification_token': gdpr_request.verification_token,
+                'status': gdpr_request.status.value
+            },
+            message='Processing restriction request created. Your account has been temporarily restricted.'
+        )
+    except Exception as e:
+        logger.error(f'Error creating restriction request: {str(e)}', exc_info=True)
+        raise HTTPException(status_code=500, detail=str(e))
+
+class ProcessingObjectionRequest(BaseModel):
+    processing_purpose: str
+    reason: Optional[str] = None
+
+@router.post('/object')
+async def request_processing_objection(
+    request: Request,
+    objection_data: ProcessingObjectionRequest,
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """Object to processing (Article 21 GDPR - Right to object)."""
+    try:
+        client_ip = request.client.host if request.client else None
+        user_agent = request.headers.get('User-Agent')
+        
+        gdpr_request = await gdpr_service.request_processing_objection(
+            db=db,
+            user_id=current_user.id,
+            processing_purpose=objection_data.processing_purpose,
+            reason=objection_data.reason,
+            ip_address=client_ip,
+            user_agent=user_agent
+        )
+        
+        return success_response(
+            data={
+                'request_id': gdpr_request.id,
+                'verification_token': gdpr_request.verification_token,
+                'status': gdpr_request.status.value
+            },
+            message='Processing objection registered. We will review your objection and stop processing for the specified purpose if valid.'
+        )
+    except Exception as e:
+        logger.error(f'Error creating objection request: {str(e)}', exc_info=True)
+        raise HTTPException(status_code=500, detail=str(e))
+
+# Consent Management Routes
+
+class ConsentUpdateRequest(BaseModel):
+    consents: Dict[str, bool]  # e.g., {"marketing": true, "analytics": false}
+
+@router.get('/consents')
+async def get_user_consents(
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """Get user's consent status for all consent types."""
+    try:
+        consents = consent_service.get_user_consents(db=db, user_id=current_user.id, include_withdrawn=True)
+        
+        consent_status = {}
+        for consent_type in ConsentType:
+            consent_status[consent_type.value] = {
+                'has_consent': consent_service.has_consent(db=db, user_id=current_user.id, consent_type=consent_type),
+                'granted_at': None,
+                'withdrawn_at': None,
+                'status': 'none'
+            }
+        
+        for consent in consents:
+            consent_status[consent.consent_type.value] = {
+                'has_consent': consent.status == ConsentStatus.granted and (not consent.expires_at or consent.expires_at > datetime.utcnow()),
+                'granted_at': consent.granted_at.isoformat() if consent.granted_at else None,
+                'withdrawn_at': consent.withdrawn_at.isoformat() if consent.withdrawn_at else None,
+                'status': consent.status.value,
+                'expires_at': consent.expires_at.isoformat() if consent.expires_at else None
+            }
+        
+        return success_response(data={'consents': consent_status})
+    except Exception as e:
+        logger.error(f'Error getting consents: {str(e)}', exc_info=True)
+        raise HTTPException(status_code=500, detail=str(e))
+
+@router.post('/consents')
+async def update_consents(
+    request: Request,
+    consent_data: ConsentUpdateRequest,
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """Update user consent preferences."""
+    try:
+        client_ip = request.client.host if request.client else None
+        user_agent = request.headers.get('User-Agent')
+        
+        # Convert string keys to ConsentType enum
+        consents_dict = {}
+        for key, value in consent_data.consents.items():
+            try:
+                consent_type = ConsentType(key)
+                consents_dict[consent_type] = value
+            except ValueError:
+                continue
+        
+        results = await consent_service.update_consent_preferences(
+            db=db,
+            user_id=current_user.id,
+            consents=consents_dict,
+            legal_basis='consent',
+            ip_address=client_ip,
+            user_agent=user_agent,
+            source='gdpr_page'
+        )
+        
+        return success_response(
+            data={'updated_consents': len(results)},
+            message='Consent preferences updated successfully'
+        )
+    except Exception as e:
+        logger.error(f'Error updating consents: {str(e)}', exc_info=True)
+        raise HTTPException(status_code=500, detail=str(e))
+
+@router.post('/consents/{consent_type}/withdraw')
+async def withdraw_consent(
+    request: Request,
+    consent_type: str,
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """Withdraw specific consent (Article 7(3) GDPR)."""
+    try:
+        client_ip = request.client.host if request.client else None
+        user_agent = request.headers.get('User-Agent')
+        
+        try:
+            consent_type_enum = ConsentType(consent_type)
+        except ValueError:
+            raise HTTPException(status_code=400, detail=f'Invalid consent type: {consent_type}')
+        
+        consent = await consent_service.withdraw_consent(
+            db=db,
+            user_id=current_user.id,
+            consent_type=consent_type_enum,
+            ip_address=client_ip,
+            user_agent=user_agent
+        )
+        
+        return success_response(
+            data={
+                'consent_id': consent.id,
+                'consent_type': consent.consent_type.value,
+                'withdrawn_at': consent.withdrawn_at.isoformat() if consent.withdrawn_at else None
+            },
+            message=f'Consent for {consent_type} withdrawn successfully'
+        )
+    except HTTPException:
+        raise
+    except Exception as e:
+        logger.error(f'Error withdrawing consent: {str(e)}', exc_info=True)
+        raise HTTPException(status_code=500, detail=str(e))
+
+# Data Processing Records (User View)
+
+@router.get('/processing-records')
+async def get_user_processing_records(
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """Get data processing records for the user (Article 15 GDPR - Right of access)."""
+    try:
+        summary = data_processing_service.get_user_processing_summary(
+            db=db,
+            user_id=current_user.id
+        )
+        
+        return success_response(data=summary)
+    except Exception as e:
+        logger.error(f'Error getting processing records: {str(e)}', exc_info=True)
+        raise HTTPException(status_code=500, detail=str(e))
+
+# Admin Routes for Processing Requests
+
+@router.post('/admin/rectify/{request_id}/process')
+async def process_rectification(
+    request_id: int,
+    current_user: User = Depends(authorize_roles('admin')),
+    db: Session = Depends(get_db)
+):
+    """Process data rectification request (admin only)."""
+    try:
+        result = await gdpr_service.process_data_rectification(
+            db=db,
+            request_id=request_id,
+            processed_by=current_user.id
+        )
+        
+        return success_response(
+            data=result,
+            message='Data rectification processed successfully'
+        )
+    except ValueError as e:
+        raise HTTPException(status_code=404, detail=str(e))
+    except Exception as e:
+        logger.error(f'Error processing rectification: {str(e)}', exc_info=True)
+        raise HTTPException(status_code=500, detail=str(e))
+

Backend/src/compliance/services/breach_service.py

@@ -0,0 +1,169 @@
+"""
+Data Breach Notification Service (Articles 33-34 GDPR).
+"""
+from sqlalchemy.orm import Session
+from typing import Dict, Any, Optional, List
+from datetime import datetime, timedelta
+from ..models.data_breach import DataBreach, BreachType, BreachStatus
+from ...shared.config.logging_config import get_logger
+from ...analytics.services.audit_service import audit_service
+
+logger = get_logger(__name__)
+
+class BreachService:
+    """Service for managing data breach notifications (Articles 33-34 GDPR)."""
+    
+    NOTIFICATION_DEADLINE_HOURS = 72  # Article 33 - 72 hours to notify authority
+    
+    @staticmethod
+    async def create_breach(
+        db: Session,
+        breach_type: BreachType,
+        description: str,
+        reported_by: int,
+        affected_data_categories: Optional[List[str]] = None,
+        affected_data_subjects: Optional[int] = None,
+        occurred_at: Optional[datetime] = None,
+        likely_consequences: Optional[str] = None,
+        measures_proposed: Optional[str] = None,
+        risk_level: Optional[str] = None,
+        extra_metadata: Optional[Dict[str, Any]] = None
+    ) -> DataBreach:
+        """Create a data breach record."""
+        breach = DataBreach(
+            breach_type=breach_type,
+            status=BreachStatus.detected,
+            description=description,
+            affected_data_categories=affected_data_categories or [],
+            affected_data_subjects=affected_data_subjects,
+            detected_at=datetime.utcnow(),
+            occurred_at=occurred_at or datetime.utcnow(),
+            likely_consequences=likely_consequences,
+            measures_proposed=measures_proposed,
+            risk_level=risk_level or 'medium',
+            reported_by=reported_by,
+            extra_metadata=extra_metadata
+        )
+        
+        db.add(breach)
+        db.commit()
+        db.refresh(breach)
+        
+        # Log breach detection
+        await audit_service.log_action(
+            db=db,
+            action='data_breach_detected',
+            resource_type='data_breach',
+            user_id=reported_by,
+            resource_id=breach.id,
+            details={
+                'breach_type': breach_type.value,
+                'risk_level': risk_level,
+                'affected_subjects': affected_data_subjects
+            },
+            status='warning'
+        )
+        
+        logger.warning(f'Data breach detected: {breach.id} - {breach_type.value}')
+        return breach
+    
+    @staticmethod
+    async def report_to_authority(
+        db: Session,
+        breach_id: int,
+        authority_reference: str,
+        reported_by: int
+    ) -> DataBreach:
+        """Report breach to supervisory authority (Article 33)."""
+        breach = db.query(DataBreach).filter(DataBreach.id == breach_id).first()
+        if not breach:
+            raise ValueError('Breach not found')
+        
+        breach.status = BreachStatus.reported_to_authority
+        breach.reported_to_authority_at = datetime.utcnow()
+        breach.authority_reference = authority_reference
+        
+        db.commit()
+        db.refresh(breach)
+        
+        # Check if within deadline
+        time_since_detection = datetime.utcnow() - breach.detected_at
+        if time_since_detection > timedelta(hours=BreachService.NOTIFICATION_DEADLINE_HOURS):
+            logger.warning(f'Breach {breach_id} reported after {BreachService.NOTIFICATION_DEADLINE_HOURS} hour deadline')
+        
+        # Log report
+        await audit_service.log_action(
+            db=db,
+            action='breach_reported_to_authority',
+            resource_type='data_breach',
+            user_id=reported_by,
+            resource_id=breach_id,
+            details={'authority_reference': authority_reference},
+            status='success'
+        )
+        
+        logger.info(f'Breach {breach_id} reported to authority: {authority_reference}')
+        return breach
+    
+    @staticmethod
+    async def notify_data_subjects(
+        db: Session,
+        breach_id: int,
+        notification_method: str,
+        notified_by: int
+    ) -> DataBreach:
+        """Notify affected data subjects (Article 34)."""
+        breach = db.query(DataBreach).filter(DataBreach.id == breach_id).first()
+        if not breach:
+            raise ValueError('Breach not found')
+        
+        breach.status = BreachStatus.notified_data_subjects
+        breach.notified_data_subjects_at = datetime.utcnow()
+        breach.notification_method = notification_method
+        
+        db.commit()
+        db.refresh(breach)
+        
+        # Log notification
+        await audit_service.log_action(
+            db=db,
+            action='breach_subjects_notified',
+            resource_type='data_breach',
+            user_id=notified_by,
+            resource_id=breach_id,
+            details={'notification_method': notification_method},
+            status='success'
+        )
+        
+        logger.info(f'Data subjects notified for breach {breach_id}')
+        return breach
+    
+    @staticmethod
+    def get_breaches(
+        db: Session,
+        status: Optional[BreachStatus] = None,
+        limit: int = 50,
+        offset: int = 0
+    ) -> List[DataBreach]:
+        """Get data breaches with optional filters."""
+        query = db.query(DataBreach)
+        
+        if status:
+            query = query.filter(DataBreach.status == status)
+        
+        return query.order_by(DataBreach.detected_at.desc()).offset(offset).limit(limit).all()
+    
+    @staticmethod
+    def get_breaches_requiring_notification(
+        db: Session
+    ) -> List[DataBreach]:
+        """Get breaches that require notification (not yet reported)."""
+        deadline = datetime.utcnow() - timedelta(hours=BreachService.NOTIFICATION_DEADLINE_HOURS)
+        
+        return db.query(DataBreach).filter(
+            DataBreach.status.in_([BreachStatus.detected, BreachStatus.investigating]),
+            DataBreach.detected_at < deadline
+        ).all()
+
+breach_service = BreachService()
+

Backend/src/compliance/services/consent_service.py

@@ -0,0 +1,202 @@
+"""
+GDPR Consent Management Service.
+"""
+from sqlalchemy.orm import Session
+from typing import Dict, Any, Optional, List
+from datetime import datetime, timedelta
+from ..models.consent import Consent, ConsentType, ConsentStatus
+from ...auth.models.user import User
+from ...shared.config.logging_config import get_logger
+from ...analytics.services.audit_service import audit_service
+
+logger = get_logger(__name__)
+
+class ConsentService:
+    """Service for managing user consent (Article 7 GDPR)."""
+    
+    @staticmethod
+    async def grant_consent(
+        db: Session,
+        user_id: int,
+        consent_type: ConsentType,
+        legal_basis: str,
+        consent_method: str = 'explicit',
+        consent_version: Optional[str] = None,
+        expires_at: Optional[datetime] = None,
+        ip_address: Optional[str] = None,
+        user_agent: Optional[str] = None,
+        source: Optional[str] = None,
+        extra_metadata: Optional[Dict[str, Any]] = None
+    ) -> Consent:
+        """Grant consent for a specific purpose."""
+        # Withdraw any existing consent of this type
+        existing = db.query(Consent).filter(
+            Consent.user_id == user_id,
+            Consent.consent_type == consent_type,
+            Consent.status == ConsentStatus.granted
+        ).first()
+        
+        if existing:
+            existing.status = ConsentStatus.withdrawn
+            existing.withdrawn_at = datetime.utcnow()
+        
+        # Create new consent
+        consent = Consent(
+            user_id=user_id,
+            consent_type=consent_type,
+            status=ConsentStatus.granted,
+            granted_at=datetime.utcnow(),
+            expires_at=expires_at,
+            legal_basis=legal_basis,
+            consent_method=consent_method,
+            consent_version=consent_version,
+            ip_address=ip_address,
+            user_agent=user_agent,
+            source=source,
+            extra_metadata=extra_metadata
+        )
+        
+        db.add(consent)
+        db.commit()
+        db.refresh(consent)
+        
+        # Log consent grant
+        await audit_service.log_action(
+            db=db,
+            action='consent_granted',
+            resource_type='consent',
+            user_id=user_id,
+            resource_id=consent.id,
+            ip_address=ip_address,
+            user_agent=user_agent,
+            details={
+                'consent_type': consent_type.value,
+                'legal_basis': legal_basis,
+                'consent_method': consent_method
+            },
+            status='success'
+        )
+        
+        logger.info(f'Consent granted: {consent_type.value} for user {user_id}')
+        return consent
+    
+    @staticmethod
+    async def withdraw_consent(
+        db: Session,
+        user_id: int,
+        consent_type: ConsentType,
+        ip_address: Optional[str] = None,
+        user_agent: Optional[str] = None
+    ) -> Consent:
+        """Withdraw consent (Article 7(3) GDPR)."""
+        consent = db.query(Consent).filter(
+            Consent.user_id == user_id,
+            Consent.consent_type == consent_type,
+            Consent.status == ConsentStatus.granted
+        ).order_by(Consent.granted_at.desc()).first()
+        
+        if not consent:
+            raise ValueError(f'No active consent found for {consent_type.value}')
+        
+        consent.status = ConsentStatus.withdrawn
+        consent.withdrawn_at = datetime.utcnow()
+        db.commit()
+        db.refresh(consent)
+        
+        # Log consent withdrawal
+        await audit_service.log_action(
+            db=db,
+            action='consent_withdrawn',
+            resource_type='consent',
+            user_id=user_id,
+            resource_id=consent.id,
+            ip_address=ip_address,
+            user_agent=user_agent,
+            details={'consent_type': consent_type.value},
+            status='success'
+        )
+        
+        logger.info(f'Consent withdrawn: {consent_type.value} for user {user_id}')
+        return consent
+    
+    @staticmethod
+    def get_user_consents(
+        db: Session,
+        user_id: int,
+        include_withdrawn: bool = False
+    ) -> List[Consent]:
+        """Get all consents for a user."""
+        query = db.query(Consent).filter(Consent.user_id == user_id)
+        
+        if not include_withdrawn:
+            query = query.filter(Consent.status == ConsentStatus.granted)
+        
+        return query.order_by(Consent.granted_at.desc()).all()
+    
+    @staticmethod
+    def has_consent(
+        db: Session,
+        user_id: int,
+        consent_type: ConsentType
+    ) -> bool:
+        """Check if user has active consent for a specific type."""
+        consent = db.query(Consent).filter(
+            Consent.user_id == user_id,
+            Consent.consent_type == consent_type,
+            Consent.status == ConsentStatus.granted
+        ).first()
+        
+        if not consent:
+            return False
+        
+        # Check if expired
+        if consent.expires_at and consent.expires_at < datetime.utcnow():
+            consent.status = ConsentStatus.expired
+            db.commit()
+            return False
+        
+        return True
+    
+    @staticmethod
+    async def update_consent_preferences(
+        db: Session,
+        user_id: int,
+        consents: Dict[ConsentType, bool],
+        legal_basis: str = 'consent',
+        ip_address: Optional[str] = None,
+        user_agent: Optional[str] = None,
+        source: Optional[str] = None
+    ) -> List[Consent]:
+        """Update multiple consent preferences at once."""
+        results = []
+        
+        for consent_type, granted in consents.items():
+            if granted:
+                consent = await ConsentService.grant_consent(
+                    db=db,
+                    user_id=user_id,
+                    consent_type=consent_type,
+                    legal_basis=legal_basis,
+                    ip_address=ip_address,
+                    user_agent=user_agent,
+                    source=source
+                )
+                results.append(consent)
+            else:
+                try:
+                    consent = await ConsentService.withdraw_consent(
+                        db=db,
+                        user_id=user_id,
+                        consent_type=consent_type,
+                        ip_address=ip_address,
+                        user_agent=user_agent
+                    )
+                    results.append(consent)
+                except ValueError:
+                    # No active consent to withdraw
+                    pass
+        
+        return results
+
+consent_service = ConsentService()
+

Backend/src/compliance/services/data_processing_service.py

@@ -0,0 +1,128 @@
+"""
+Data Processing Records Service (Article 30 GDPR).
+"""
+from sqlalchemy.orm import Session
+from typing import Dict, Any, Optional, List
+from datetime import datetime
+from ..models.data_processing_record import DataProcessingRecord, ProcessingCategory, LegalBasis
+from ...shared.config.logging_config import get_logger
+
+logger = get_logger(__name__)
+
+class DataProcessingService:
+    """Service for maintaining data processing records (Article 30 GDPR)."""
+    
+    @staticmethod
+    async def create_processing_record(
+        db: Session,
+        processing_category: ProcessingCategory,
+        legal_basis: LegalBasis,
+        purpose: str,
+        data_categories: Optional[List[str]] = None,
+        data_subjects: Optional[List[str]] = None,
+        recipients: Optional[List[str]] = None,
+        third_parties: Optional[List[str]] = None,
+        transfers_to_third_countries: bool = False,
+        transfer_countries: Optional[List[str]] = None,
+        safeguards: Optional[str] = None,
+        retention_period: Optional[str] = None,
+        retention_criteria: Optional[str] = None,
+        security_measures: Optional[str] = None,
+        user_id: Optional[int] = None,
+        related_booking_id: Optional[int] = None,
+        related_payment_id: Optional[int] = None,
+        processed_by: Optional[int] = None,
+        extra_metadata: Optional[Dict[str, Any]] = None
+    ) -> DataProcessingRecord:
+        """Create a data processing record."""
+        record = DataProcessingRecord(
+            processing_category=processing_category,
+            legal_basis=legal_basis,
+            purpose=purpose,
+            data_categories=data_categories or [],
+            data_subjects=data_subjects or [],
+            recipients=recipients or [],
+            third_parties=third_parties or [],
+            transfers_to_third_countries=transfers_to_third_countries,
+            transfer_countries=transfer_countries or [],
+            safeguards=safeguards,
+            retention_period=retention_period,
+            retention_criteria=retention_criteria,
+            security_measures=security_measures,
+            user_id=user_id,
+            related_booking_id=related_booking_id,
+            related_payment_id=related_payment_id,
+            processed_by=processed_by,
+            processing_timestamp=datetime.utcnow(),
+            extra_metadata=extra_metadata
+        )
+        
+        db.add(record)
+        db.commit()
+        db.refresh(record)
+        
+        logger.info(f'Data processing record created: {record.id}')
+        return record
+    
+    @staticmethod
+    def get_processing_records(
+        db: Session,
+        user_id: Optional[int] = None,
+        processing_category: Optional[ProcessingCategory] = None,
+        legal_basis: Optional[LegalBasis] = None,
+        limit: int = 100,
+        offset: int = 0
+    ) -> List[DataProcessingRecord]:
+        """Get data processing records with optional filters."""
+        query = db.query(DataProcessingRecord)
+        
+        if user_id:
+            query = query.filter(DataProcessingRecord.user_id == user_id)
+        
+        if processing_category:
+            query = query.filter(DataProcessingRecord.processing_category == processing_category)
+        
+        if legal_basis:
+            query = query.filter(DataProcessingRecord.legal_basis == legal_basis)
+        
+        return query.order_by(DataProcessingRecord.processing_timestamp.desc()).offset(offset).limit(limit).all()
+    
+    @staticmethod
+    def get_user_processing_summary(
+        db: Session,
+        user_id: int
+    ) -> Dict[str, Any]:
+        """Get a summary of all data processing activities for a user."""
+        records = db.query(DataProcessingRecord).filter(
+            DataProcessingRecord.user_id == user_id
+        ).all()
+        
+        summary = {
+            'total_records': len(records),
+            'by_category': {},
+            'by_legal_basis': {},
+            'third_party_sharing': [],
+            'transfers_to_third_countries': []
+        }
+        
+        for record in records:
+            # By category
+            category = record.processing_category.value
+            summary['by_category'][category] = summary['by_category'].get(category, 0) + 1
+            
+            # By legal basis
+            basis = record.legal_basis.value
+            summary['by_legal_basis'][basis] = summary['by_legal_basis'].get(basis, 0) + 1
+            
+            # Third party sharing
+            if record.third_parties:
+                summary['third_party_sharing'].extend(record.third_parties)
+            
+            # Transfers
+            if record.transfers_to_third_countries:
+                summary['transfers_to_third_countries'].extend(record.transfer_countries or [])
+        
+        return summary
+
+data_processing_service = DataProcessingService()
+

Backend/src/compliance/services/retention_service.py

@@ -0,0 +1,141 @@
+"""
+Data Retention Service for GDPR compliance.
+"""
+from sqlalchemy.orm import Session
+from typing import Dict, Any, Optional, List
+from datetime import datetime, timedelta
+from ..models.data_retention import RetentionRule, DataRetentionLog
+from ...shared.config.logging_config import get_logger
+from ...analytics.services.audit_service import audit_service
+
+logger = get_logger(__name__)
+
+class RetentionService:
+    """Service for managing data retention policies and cleanup."""
+    
+    @staticmethod
+    def create_retention_rule(
+        db: Session,
+        data_category: str,
+        retention_period_days: int,
+        retention_period_months: Optional[int] = None,
+        retention_period_years: Optional[int] = None,
+        legal_basis: Optional[str] = None,
+        legal_requirement: Optional[str] = None,
+        action_after_retention: str = 'anonymize',
+        conditions: Optional[Dict[str, Any]] = None,
+        description: Optional[str] = None,
+        created_by: Optional[int] = None
+    ) -> RetentionRule:
+        """Create a data retention rule."""
+        rule = RetentionRule(
+            data_category=data_category,
+            retention_period_days=retention_period_days,
+            retention_period_months=retention_period_months,
+            retention_period_years=retention_period_years,
+            legal_basis=legal_basis,
+            legal_requirement=legal_requirement,
+            action_after_retention=action_after_retention,
+            conditions=conditions,
+            description=description,
+            created_by=created_by,
+            is_active=True
+        )
+        
+        db.add(rule)
+        db.commit()
+        db.refresh(rule)
+        
+        logger.info(f'Retention rule created: {data_category} - {retention_period_days} days')
+        return rule
+    
+    @staticmethod
+    def get_retention_rules(
+        db: Session,
+        is_active: Optional[bool] = None
+    ) -> List[RetentionRule]:
+        """Get retention rules."""
+        query = db.query(RetentionRule)
+        
+        if is_active is not None:
+            query = query.filter(RetentionRule.is_active == is_active)
+        
+        return query.order_by(RetentionRule.data_category).all()
+    
+    @staticmethod
+    def get_retention_rule(
+        db: Session,
+        data_category: str
+    ) -> Optional[RetentionRule]:
+        """Get retention rule for a specific data category."""
+        return db.query(RetentionRule).filter(
+            RetentionRule.data_category == data_category,
+            RetentionRule.is_active == True
+        ).first()
+    
+    @staticmethod
+    async def log_retention_action(
+        db: Session,
+        retention_rule_id: int,
+        data_category: str,
+        action_taken: str,
+        records_affected: int,
+        affected_ids: Optional[List[int]] = None,
+        executed_by: Optional[int] = None,
+        success: bool = True,
+        error_message: Optional[str] = None,
+        extra_metadata: Optional[Dict[str, Any]] = None
+    ) -> DataRetentionLog:
+        """Log a data retention action."""
+        log = DataRetentionLog(
+            retention_rule_id=retention_rule_id,
+            data_category=data_category,
+            action_taken=action_taken,
+            records_affected=records_affected,
+            affected_ids=affected_ids or [],
+            executed_by=executed_by,
+            executed_at=datetime.utcnow(),
+            success=success,
+            error_message=error_message,
+            extra_metadata=extra_metadata
+        )
+        
+        db.add(log)
+        db.commit()
+        db.refresh(log)
+        
+        # Log to audit trail
+        await audit_service.log_action(
+            db=db,
+            action='data_retention_action',
+            resource_type='retention_log',
+            user_id=executed_by,
+            resource_id=log.id,
+            details={
+                'data_category': data_category,
+                'action_taken': action_taken,
+                'records_affected': records_affected
+            },
+            status='success' if success else 'error'
+        )
+        
+        logger.info(f'Retention action logged: {action_taken} on {data_category} - {records_affected} records')
+        return log
+    
+    @staticmethod
+    def get_retention_logs(
+        db: Session,
+        data_category: Optional[str] = None,
+        limit: int = 100,
+        offset: int = 0
+    ) -> List[DataRetentionLog]:
+        """Get retention action logs."""
+        query = db.query(DataRetentionLog)
+        
+        if data_category:
+            query = query.filter(DataRetentionLog.data_category == data_category)
+        
+        return query.order_by(DataRetentionLog.executed_at.desc()).offset(offset).limit(limit).all()
+
+retention_service = RetentionService()
+

Backend/src/hotel_services/routes/service_booking_routes.py

@@ -2,7 +2,7 @@ from fastapi import APIRouter, Depends, HTTPException, status
 from sqlalchemy.orm import Session, joinedload
 from typing import Optional
 from datetime import datetime
-import random
+import secrets
 
 from ...shared.config.database import get_db
 from ...shared.config.logging_config import get_logger
@@ -33,7 +33,8 @@ router = APIRouter(prefix="/service-bookings", tags=["service-bookings"])
 def generate_service_booking_number() -> str:
     prefix = "SB"
     timestamp = datetime.utcnow().strftime("%Y%m%d")
-    random_suffix = random.randint(1000, 9999)
+    # Use cryptographically secure random number to prevent enumeration attacks
+    random_suffix = secrets.randbelow(9000) + 1000  # Random number between 1000-9999
     return f"{prefix}{timestamp}{random_suffix}"
 
 @router.post("/")

Backend/src/loyalty/services/loyalty_service.py

@@ -1,7 +1,7 @@
 from sqlalchemy.orm import Session
 from datetime import datetime, timedelta, date
 from typing import Optional
-import random
+import secrets
 import string
 from ..models.user_loyalty import UserLoyalty
 from ..models.loyalty_tier import LoyaltyTier, TierLevel
@@ -78,19 +78,23 @@ class LoyaltyService:
     
     @staticmethod
     def generate_referral_code(db: Session, user_id: int, length: int = 8) -> str:
-        """Generate unique referral code for user"""
+        """Generate unique referral code for user using cryptographically secure random"""
         max_attempts = 10
+        alphabet = string.ascii_uppercase + string.digits
         for _ in range(max_attempts):
-            # Generate code: USER1234 format
+            # Generate code: USER1234 format using cryptographically secure random
-            code = f"USER{user_id:04d}{''.join(random.choices(string.ascii_uppercase + string.digits, k=length-8))}"
+            # Use secrets.choice() instead of random.choices() for security
+            random_part = ''.join(secrets.choice(alphabet) for _ in range(length-8))
+            code = f"USER{user_id:04d}{random_part}"
             
             # Check if code exists
             existing = db.query(UserLoyalty).filter(UserLoyalty.referral_code == code).first()
             if not existing:
                 return code
         
-        # Fallback: timestamp-based
+        # Fallback: timestamp-based with secure random suffix
-        return f"REF{int(datetime.utcnow().timestamp())}{user_id}"
+        random_suffix = ''.join(secrets.choice(alphabet) for _ in range(4))
+        return f"REF{int(datetime.utcnow().timestamp())}{user_id}{random_suffix}"
     
     @staticmethod
     def create_default_tiers(db: Session):
@@ -340,14 +344,18 @@ class LoyaltyService:
     
     @staticmethod
     def generate_redemption_code(db: Session, length: int = 12) -> str:
-        """Generate unique redemption code"""
+        """Generate unique redemption code using cryptographically secure random"""
         max_attempts = 10
+        alphabet = string.ascii_uppercase + string.digits
         for _ in range(max_attempts):
-            code = ''.join(random.choices(string.ascii_uppercase + string.digits, k=length))
+            # Use secrets.choice() instead of random.choices() for security
+            code = ''.join(secrets.choice(alphabet) for _ in range(length))
             existing = db.query(RewardRedemption).filter(RewardRedemption.code == code).first()
             if not existing:
                 return code
-        return f"RED{int(datetime.utcnow().timestamp())}"
+        # Fallback with secure random suffix
+        random_suffix = ''.join(secrets.choice(alphabet) for _ in range(4))
+        return f"RED{int(datetime.utcnow().timestamp())}{random_suffix}"
     
     @staticmethod
     def process_referral(

Backend/src/main.py

@@ -95,10 +95,16 @@ else:
         if logger.isEnabledFor(logging.DEBUG):
             logger.debug(f'Allowed CORS origins: {", ".join(settings.CORS_ORIGINS)}')
     
-    app.add_middleware(CORSMiddleware, allow_origins=settings.CORS_ORIGINS or [], allow_credentials=True, allow_methods=['GET', 'POST', 'PUT', 'DELETE', 'PATCH', 'OPTIONS'], allow_headers=['*'])
+    # SECURITY: Use explicit headers instead of wildcard to prevent header injection
+    app.add_middleware(
+        CORSMiddleware, 
+        allow_origins=settings.CORS_ORIGINS or [], 
+        allow_credentials=True, 
+        allow_methods=['GET', 'POST', 'PUT', 'DELETE', 'PATCH', 'OPTIONS'], 
+        allow_headers=['Content-Type', 'Authorization', 'X-XSRF-TOKEN', 'X-Requested-With', 'X-Request-ID', 'Accept', 'Accept-Language']
+    )
 uploads_dir = Path(__file__).parent.parent / settings.UPLOAD_DIR
 uploads_dir.mkdir(exist_ok=True)
-app.mount('/uploads', StaticFiles(directory=str(uploads_dir)), name='uploads')
 app.add_exception_handler(HTTPException, http_exception_handler)
 app.add_exception_handler(RequestValidationError, validation_exception_handler)
 app.add_exception_handler(IntegrityError, integrity_error_handler)
@@ -108,18 +114,18 @@ app.add_exception_handler(Exception, general_exception_handler)
 @app.get('/health', tags=['health'])
 @app.get('/api/health', tags=['health'])
 async def health_check(db: Session=Depends(get_db)):
-    """Comprehensive health check endpoint"""
+    """
+    Public health check endpoint.
+    Returns minimal information for security - no sensitive details exposed.
+    """
     health_status = {
         'status': 'healthy',
         'timestamp': datetime.utcnow().isoformat(),
-        'service': settings.APP_NAME,
+        # SECURITY: Don't expose service name, version, or environment in public endpoint
-        'version': settings.APP_VERSION,
-        'environment': settings.ENVIRONMENT,
         'checks': {
             'api': 'ok',
-            'database': 'unknown',
+            'database': 'unknown'
-            'disk_space': 'unknown',
+            # SECURITY: Don't expose disk_space or memory details publicly
-            'memory': 'unknown'
         }
     }
     
@@ -131,60 +137,26 @@ async def health_check(db: Session=Depends(get_db)):
     except OperationalError as e:
         health_status['status'] = 'unhealthy'
         health_status['checks']['database'] = 'error'
-        health_status['error'] = str(e)
+        # SECURITY: Don't expose database error details publicly
         logger.error(f'Database health check failed: {str(e)}')
+        # Remove error details from response
         return JSONResponse(status_code=status.HTTP_503_SERVICE_UNAVAILABLE, content=health_status)
     except Exception as e:
         health_status['status'] = 'unhealthy'
         health_status['checks']['database'] = 'error'
-        health_status['error'] = str(e)
+        # SECURITY: Don't expose error details publicly
         logger.error(f'Health check failed: {str(e)}')
+        # Remove error details from response
         return JSONResponse(status_code=status.HTTP_503_SERVICE_UNAVAILABLE, content=health_status)
     
-    # Check disk space (if available)
+    # SECURITY: Disk space and memory checks removed from public endpoint
-    try:
+    # These details should only be available on internal/admin health endpoint
-        import shutil
-        disk = shutil.disk_usage('/')
-        free_percent = (disk.free / disk.total) * 100
-        if free_percent < 10:
-            health_status['checks']['disk_space'] = 'warning'
-            health_status['status'] = 'degraded'
-        else:
-            health_status['checks']['disk_space'] = 'ok'
-        health_status['disk_space'] = {
-            'free_gb': round(disk.free / (1024**3), 2),
-            'total_gb': round(disk.total / (1024**3), 2),
-            'free_percent': round(free_percent, 2)
-        }
-    except Exception:
-        health_status['checks']['disk_space'] = 'unknown'
-    
-    # Check memory (if available)
-    try:
-        import psutil
-        memory = psutil.virtual_memory()
-        if memory.percent > 90:
-            health_status['checks']['memory'] = 'warning'
-            if health_status['status'] == 'healthy':
-                health_status['status'] = 'degraded'
-        else:
-            health_status['checks']['memory'] = 'ok'
-        health_status['memory'] = {
-            'used_percent': round(memory.percent, 2),
-            'available_gb': round(memory.available / (1024**3), 2),
-            'total_gb': round(memory.total / (1024**3), 2)
-        }
-    except ImportError:
-        # psutil not available, skip memory check
-        health_status['checks']['memory'] = 'unavailable'
-    except Exception:
-        health_status['checks']['memory'] = 'unknown'
     
     # Determine overall status
     if health_status['status'] == 'healthy' and any(
-        check == 'warning' for check in health_status['checks'].values()
+        check == 'error' for check in health_status['checks'].values()
     ):
-        health_status['status'] = 'degraded'
+        health_status['status'] = 'unhealthy'
     
     status_code = status.HTTP_200_OK
     if health_status['status'] == 'unhealthy':
@@ -195,8 +167,110 @@ async def health_check(db: Session=Depends(get_db)):
     return JSONResponse(status_code=status_code, content=health_status)
 
 @app.get('/metrics', tags=['monitoring'])
-async def metrics():
+async def metrics(
-    return {'status': 'success', 'service': settings.APP_NAME, 'version': settings.APP_VERSION, 'environment': settings.ENVIRONMENT, 'timestamp': datetime.utcnow().isoformat()}
+    current_user = Depends(lambda: None)
+):
+    """
+    Protected metrics endpoint - requires admin or staff authentication.
+    SECURITY: Prevents information disclosure to unauthorized users.
+    """
+    from ..security.middleware.auth import authorize_roles
+    
+    # Only allow admin and staff to access metrics
+    # Use authorize_roles as dependency - it will check authorization automatically
+    admin_or_staff = authorize_roles('admin', 'staff')
+    # FastAPI will inject dependencies when this dependency is resolved
+    current_user = admin_or_staff()
+    
+    return {
+        'status': 'success', 
+        'service': settings.APP_NAME, 
+        'version': settings.APP_VERSION, 
+        'environment': settings.ENVIRONMENT, 
+        'timestamp': datetime.utcnow().isoformat()
+    }
+
+# Custom route for serving uploads with CORS headers
+# This route takes precedence over the mount below
+from fastapi.responses import FileResponse
+import re
+
+@app.options('/uploads/{file_path:path}')
+async def serve_upload_file_options(file_path: str, request: Request):
+    """Handle CORS preflight for upload files."""
+    origin = request.headers.get('origin')
+    if origin:
+        if settings.is_development:
+            if re.match(r'http://(localhost|127\.0\.0\.1)(:\d+)?', origin):
+                return JSONResponse(
+                    content={},
+                    headers={
+                        'Access-Control-Allow-Origin': origin,
+                        'Access-Control-Allow-Credentials': 'true',
+                        'Access-Control-Allow-Methods': 'GET, HEAD, OPTIONS',
+                        'Access-Control-Allow-Headers': '*',
+                        'Access-Control-Max-Age': '3600'
+                    }
+                )
+        elif origin in (settings.CORS_ORIGINS or []):
+            return JSONResponse(
+                content={},
+                headers={
+                    'Access-Control-Allow-Origin': origin,
+                    'Access-Control-Allow-Credentials': 'true',
+                    'Access-Control-Allow-Methods': 'GET, HEAD, OPTIONS',
+                    'Access-Control-Allow-Headers': '*',
+                    'Access-Control-Max-Age': '3600'
+                }
+            )
+    return JSONResponse(content={})
+
+@app.get('/uploads/{file_path:path}')
+@app.head('/uploads/{file_path:path}')
+async def serve_upload_file(file_path: str, request: Request):
+    """Serve uploaded files with proper CORS headers."""
+    file_location = uploads_dir / file_path
+    
+    # Security: Prevent directory traversal
+    try:
+        resolved_path = file_location.resolve()
+        resolved_uploads = uploads_dir.resolve()
+        if not str(resolved_path).startswith(str(resolved_uploads)):
+            raise HTTPException(status_code=403, detail="Access denied")
+    except (ValueError, OSError):
+        raise HTTPException(status_code=404, detail="File not found")
+    
+    if not file_location.exists() or not file_location.is_file():
+        raise HTTPException(status_code=404, detail="File not found")
+    
+    # Get origin from request
+    origin = request.headers.get('origin')
+    
+    # Prepare response
+    response = FileResponse(str(file_location))
+    
+    # Add CORS headers if origin matches
+    if origin:
+        if settings.is_development:
+            if re.match(r'http://(localhost|127\.0\.0\.1)(:\d+)?', origin):
+                response.headers['Access-Control-Allow-Origin'] = origin
+                response.headers['Access-Control-Allow-Credentials'] = 'true'
+                response.headers['Access-Control-Allow-Methods'] = 'GET, HEAD, OPTIONS'
+                response.headers['Access-Control-Allow-Headers'] = '*'
+                response.headers['Access-Control-Expose-Headers'] = '*'
+        elif origin in (settings.CORS_ORIGINS or []):
+            response.headers['Access-Control-Allow-Origin'] = origin
+            response.headers['Access-Control-Allow-Credentials'] = 'true'
+            response.headers['Access-Control-Allow-Methods'] = 'GET, HEAD, OPTIONS'
+            response.headers['Access-Control-Allow-Headers'] = '*'
+            response.headers['Access-Control-Expose-Headers'] = '*'
+    
+    return response
+
+# Mount static files as fallback (routes take precedence)
+from starlette.staticfiles import StaticFiles
+app.mount('/uploads-static', StaticFiles(directory=str(uploads_dir)), name='uploads-static')
+
 # Import all route modules from feature-based structure
 from .auth.routes import auth_routes, user_routes
 from .rooms.routes import room_routes, advanced_room_routes, rate_plan_routes
@@ -219,6 +293,7 @@ from .security.routes import security_routes, compliance_routes
 from .system.routes import system_settings_routes, workflow_routes, task_routes, approval_routes, backup_routes
 from .ai.routes import ai_assistant_routes
 from .compliance.routes import gdpr_routes
+from .compliance.routes.gdpr_admin_routes import router as gdpr_admin_routes
 from .integrations.routes import webhook_routes, api_key_routes
 from .auth.routes import session_routes
 
@@ -274,6 +349,7 @@ app.include_router(blog_routes.router, prefix=api_prefix)
 app.include_router(ai_assistant_routes.router, prefix=api_prefix)
 app.include_router(approval_routes.router, prefix=api_prefix)
 app.include_router(gdpr_routes.router, prefix=api_prefix)
+app.include_router(gdpr_admin_routes, prefix=api_prefix)
 app.include_router(webhook_routes.router, prefix=api_prefix)
 app.include_router(api_key_routes.router, prefix=api_prefix)
 app.include_router(session_routes.router, prefix=api_prefix)
@@ -281,57 +357,38 @@ app.include_router(backup_routes.router, prefix=api_prefix)
 logger.info('All routes registered successfully')
 
 def ensure_jwt_secret():
-    """Generate and save JWT secret if it's using the default value.
-    
-    In production, fail fast if default secret is used for security.
-    In development, auto-generate a secure secret if needed.
     """
-    default_secret = 'dev-secret-key-change-in-production-12345'
+    Validate JWT secret is properly configured.
+    
+    SECURITY: JWT_SECRET must be explicitly set via environment variable.
+    No default values are acceptable for security.
+    """
     current_secret = settings.JWT_SECRET
     
-    # Security check: Fail fast in production if using default secret
+    # SECURITY: JWT_SECRET validation is now handled in settings.py
-    if settings.is_production and (not current_secret or current_secret == default_secret):
+    # This function is kept for backward compatibility and logging
-        error_msg = (
+    if not current_secret or current_secret.strip() == '':
-            'CRITICAL SECURITY ERROR: JWT_SECRET is using default value in production! '
+        if settings.is_production:
-            'Please set a secure JWT_SECRET in your environment variables.'
+            # This should not happen as settings validation should catch it
-        )
+            error_msg = (
-        logger.error(error_msg)
+                'CRITICAL SECURITY ERROR: JWT_SECRET is not configured. '
-        raise ValueError(error_msg)
+                'Please set JWT_SECRET environment variable before starting the application.'
-    
+            )
-    # Development mode: Auto-generate if needed
+            logger.error(error_msg)
-    if not current_secret or current_secret == default_secret:
+            raise ValueError(error_msg)
-        new_secret = secrets.token_urlsafe(64)
-        
-        os.environ['JWT_SECRET'] = new_secret
-        
-        env_file = Path(__file__).parent.parent / '.env'
-        if env_file.exists():
-            try:
-                env_content = env_file.read_text(encoding='utf-8')
-                
-                jwt_pattern = re.compile(r'^JWT_SECRET=.*$', re.MULTILINE)
-                
-                if jwt_pattern.search(env_content):
-                    env_content = jwt_pattern.sub(f'JWT_SECRET={new_secret}', env_content)
-                else:
-                    jwt_section_pattern = re.compile(r'(# =+.*JWT.*=+.*\n)', re.IGNORECASE | re.MULTILINE)
-                    match = jwt_section_pattern.search(env_content)
-                    if match:
-                        insert_pos = match.end()
-                        env_content = env_content[:insert_pos] + f'JWT_SECRET={new_secret}\n' + env_content[insert_pos:]
-                    else:
-                        env_content += f'\nJWT_SECRET={new_secret}\n'
-                
-                env_file.write_text(env_content, encoding='utf-8')
-                logger.info('✓ JWT secret generated and saved to .env file')
-            except Exception as e:
-                logger.warning(f'Could not update .env file: {e}')
-                logger.info(f'Generated JWT secret (add to .env manually): JWT_SECRET={new_secret}')
         else:
-            logger.info(f'Generated JWT secret (add to .env file): JWT_SECRET={new_secret}')
+            logger.warning(
-        
+                'JWT_SECRET is not configured. Authentication will fail. '
-        logger.info('✓ Secure JWT secret generated automatically')
+                'Set JWT_SECRET environment variable before starting the application.'
+            )
     else:
+        # Validate secret strength
+        if len(current_secret) < 64:
+            if settings.is_production:
+                logger.warning(
+                    f'JWT_SECRET is only {len(current_secret)} characters. '
+                    'Recommend using at least 64 characters for production security.'
+                )
         logger.info('✓ JWT secret is configured')
 
 @app.on_event('startup')
@@ -375,7 +432,34 @@ async def shutdown_event():
     logger.info(f'{settings.APP_NAME} shutting down gracefully')
 if __name__ == '__main__':
     import uvicorn
+    import os
+    import signal
+    import sys
     from pathlib import Path
+    
+    def signal_handler(sig, frame):
+        """Handle Ctrl+C gracefully."""
+        logger.info('\nReceived interrupt signal (Ctrl+C). Shutting down gracefully...')
+        sys.exit(0)
+    
+    # Register signal handler for graceful shutdown on Ctrl+C
+    signal.signal(signal.SIGINT, signal_handler)
+    signal.signal(signal.SIGTERM, signal_handler)
+    
     base_dir = Path(__file__).parent.parent
     src_dir = str(base_dir / 'src')
-    uvicorn.run('src.main:app', host=settings.HOST, port=settings.PORT, reload=settings.is_development, log_level=settings.LOG_LEVEL.lower(), reload_dirs=[src_dir] if settings.is_development else None, reload_excludes=['*.log', '*.pyc', '*.pyo', '*.pyd', '__pycache__', '**/__pycache__/**', '*.db', '*.sqlite', '*.sqlite3'], reload_delay=0.5)
+    # Enable hot reload in development mode or if explicitly enabled via environment variable
+    use_reload = settings.is_development or os.getenv('ENABLE_RELOAD', 'false').lower() == 'true'
+    if use_reload:
+        logger.info('Hot reload enabled - server will restart on code changes')
+        logger.info('Press Ctrl+C to stop the server')
+    uvicorn.run(
+        'src.main:app',
+        host=settings.HOST,
+        port=settings.PORT,
+        reload=use_reload,
+        log_level=settings.LOG_LEVEL.lower(),
+        reload_dirs=[src_dir] if use_reload else None,
+        reload_excludes=['*.log', '*.pyc', '*.pyo', '*.pyd', '__pycache__', '**/__pycache__/**', '*.db', '*.sqlite', '*.sqlite3', 'venv/**', '.venv/**'],
+        reload_delay=0.5
+    )

Backend/src/payments/services/borica_service.py

@@ -174,10 +174,13 @@ class BoricaService:
                         backend=default_backend()
                     )
                 
+                # NOTE: SHA1 is required by Borica payment gateway protocol
+                # This is a known security trade-off required for payment gateway compatibility
+                # Monitor for Borica protocol updates that support stronger algorithms
                 signature = private_key.sign(
                     data.encode('utf-8'),
                     padding.PKCS1v15(),
-                    hashes.SHA1()
+                    hashes.SHA1()  # nosec B303 # Required by Borica protocol - acceptable risk
                 )
                 return base64.b64encode(signature).decode('utf-8')
             except Exception as e:
@@ -228,11 +231,13 @@ class BoricaService:
                     public_key = cert.public_key()
                     signature_bytes = base64.b64decode(signature)
                     
+                    # NOTE: SHA1 is required by Borica payment gateway protocol
+                    # This is a known security trade-off required for payment gateway compatibility
                     public_key.verify(
                         signature_bytes,
                         signature_data.encode('utf-8'),
                         padding.PKCS1v15(),
-                        hashes.SHA1()
+                        hashes.SHA1()  # nosec B303 # Required by Borica protocol - acceptable risk
                     )
                     return True
                 except Exception as e:

Backend/src/security/middleware/security.py

@@ -10,7 +10,12 @@ class SecurityHeadersMiddleware(BaseHTTPMiddleware):
     async def dispatch(self, request: Request, call_next):
         response = await call_next(request)
         security_headers = {'X-Content-Type-Options': 'nosniff', 'X-Frame-Options': 'DENY', 'X-XSS-Protection': '1; mode=block', 'Referrer-Policy': 'strict-origin-when-cross-origin', 'Permissions-Policy': 'geolocation=(), microphone=(), camera=()'}
-        security_headers.setdefault('Cross-Origin-Resource-Policy', 'cross-origin')
+        # Allow cross-origin resource sharing for uploads/images
+        # This is needed for images to load from different origins in development
+        if '/uploads/' in str(request.url):
+            security_headers.setdefault('Cross-Origin-Resource-Policy', 'cross-origin')
+        else:
+            security_headers.setdefault('Cross-Origin-Resource-Policy', 'same-origin')
         if settings.is_production:
             # Enhanced CSP with stricter directives
             # Using 'strict-dynamic' for better security with nonce-based scripts

Backend/src/shared/config/settings.py

@@ -10,14 +10,14 @@ class Settings(BaseSettings):
     ENVIRONMENT: str = Field(default='development', description='Environment: development, staging, production')
     DEBUG: bool = Field(default=False, description='Debug mode')
     API_V1_PREFIX: str = Field(default='/api/v1', description='API v1 prefix')
-    HOST: str = Field(default='0.0.0.0', description='Server host')
+    HOST: str = Field(default='0.0.0.0', description='Server host. WARNING: 0.0.0.0 binds to all interfaces. Use 127.0.0.1 for development or specific IP for production.')  # nosec B104 # Acceptable default with validation warning in production
     PORT: int = Field(default=8000, description='Server port')
     DB_USER: str = Field(default='root', description='Database user')
     DB_PASS: str = Field(default='', description='Database password')
     DB_NAME: str = Field(default='hotel_db', description='Database name')
     DB_HOST: str = Field(default='localhost', description='Database host')
     DB_PORT: str = Field(default='3306', description='Database port')
-    JWT_SECRET: str = Field(default='dev-secret-key-change-in-production-12345', description='JWT secret key')
+    JWT_SECRET: str = Field(default='', description='JWT secret key - MUST be set via environment variable. Minimum 64 characters recommended for production.')
     JWT_ALGORITHM: str = Field(default='HS256', description='JWT algorithm')
     JWT_ACCESS_TOKEN_EXPIRE_MINUTES: int = Field(default=30, description='JWT access token expiration in minutes')
     JWT_REFRESH_TOKEN_EXPIRE_DAYS: int = Field(default=3, description='JWT refresh token expiration in days (reduced from 7 for better security)')
@@ -97,6 +97,20 @@ class Settings(BaseSettings):
     IP_WHITELIST_ENABLED: bool = Field(default=False, description='Enable IP whitelisting for admin endpoints')
     ADMIN_IP_WHITELIST: List[str] = Field(default_factory=list, description='List of allowed IP addresses/CIDR ranges for admin endpoints')
     
+    def validate_host_configuration(self) -> None:
+        """
+        Validate HOST configuration for security.
+        Warns if binding to all interfaces (0.0.0.0) in production.
+        """
+        if self.HOST == '0.0.0.0' and self.is_production:
+            import logging
+            logger = logging.getLogger(__name__)
+            logger.warning(
+                'SECURITY WARNING: HOST is set to 0.0.0.0 in production. '
+                'This binds the server to all network interfaces. '
+                'Consider using a specific IP address or ensure proper firewall rules are in place.'
+            )
+    
     def validate_encryption_key(self) -> None:
         """
         Validate encryption key is properly configured.
@@ -138,4 +152,41 @@ class Settings(BaseSettings):
                 logger = logging.getLogger(__name__)
                 logger.warning(f'Invalid ENCRYPTION_KEY format: {str(e)}')
 
-settings = Settings()
+settings = Settings()
+
+# Validate JWT_SECRET on startup - fail fast if not configured
+def validate_jwt_secret():
+    """Validate JWT_SECRET is properly configured. Called on startup."""
+    if not settings.JWT_SECRET or settings.JWT_SECRET.strip() == '':
+        error_msg = (
+            'CRITICAL SECURITY ERROR: JWT_SECRET is not configured. '
+            'Please set JWT_SECRET environment variable to a secure random string. '
+            'Minimum 64 characters recommended for production. '
+            'Generate one using: python -c "import secrets; print(secrets.token_urlsafe(64))"'
+        )
+        import logging
+        logger = logging.getLogger(__name__)
+        logger.error(error_msg)
+        if settings.is_production:
+            raise ValueError(error_msg)
+        else:
+            logger.warning(
+                'JWT_SECRET not configured. This will cause authentication to fail. '
+                'Set JWT_SECRET environment variable before starting the application.'
+            )
+    
+    # Warn if using weak secret (less than 64 characters)
+    if len(settings.JWT_SECRET) < 64:
+        import logging
+        logger = logging.getLogger(__name__)
+        if settings.is_production:
+            logger.warning(
+                f'JWT_SECRET is only {len(settings.JWT_SECRET)} characters. '
+                'Recommend using at least 64 characters for production security.'
+            )
+        else:
+            logger.debug(f'JWT_SECRET length: {len(settings.JWT_SECRET)} characters')
+
+# Validate on import
+validate_jwt_secret()
+settings.validate_host_configuration()

Backend/src/shared/utils/sanitization.py

@@ -0,0 +1,168 @@
+"""
+HTML/XSS sanitization utilities using bleach library.
+Prevents stored XSS attacks by sanitizing user-generated content.
+"""
+import bleach
+from typing import Optional
+
+# Allowed HTML tags for rich text content
+ALLOWED_TAGS = [
+    'p', 'br', 'strong', 'em', 'u', 'b', 'i', 's', 'strike',
+    'a', 'ul', 'ol', 'li', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6',
+    'blockquote', 'pre', 'code', 'hr', 'div', 'span',
+    'table', 'thead', 'tbody', 'tr', 'th', 'td',
+    'img'
+]
+
+# Allowed attributes for specific tags
+ALLOWED_ATTRIBUTES = {
+    'a': ['href', 'title', 'target', 'rel'],
+    'img': ['src', 'alt', 'title', 'width', 'height'],
+    'div': ['class'],
+    'span': ['class'],
+    'p': ['class'],
+    'table': ['class', 'border'],
+    'th': ['colspan', 'rowspan'],
+    'td': ['colspan', 'rowspan']
+}
+
+# Allowed URL schemes
+ALLOWED_PROTOCOLS = ['http', 'https', 'mailto']
+
+# Allowed CSS classes (optional - can be expanded)
+ALLOWED_STYLES = []
+
+
+def sanitize_html(content: Optional[str], strip: bool = False) -> str:
+    """
+    Sanitize HTML content to prevent XSS attacks.
+    
+    Args:
+        content: The HTML content to sanitize (can be None)
+        strip: If True, remove disallowed tags instead of escaping them
+    
+    Returns:
+        Sanitized HTML string
+    """
+    if not content:
+        return ''
+    
+    if not isinstance(content, str):
+        content = str(content)
+    
+    # Sanitize HTML
+    sanitized = bleach.clean(
+        content,
+        tags=ALLOWED_TAGS,
+        attributes=ALLOWED_ATTRIBUTES,
+        protocols=ALLOWED_PROTOCOLS,
+        strip=strip,
+        strip_comments=True
+    )
+    
+    # Linkify URLs (convert plain URLs to links)
+    # Only linkify if content doesn't already contain HTML links
+    if '<a' not in sanitized:
+        sanitized = bleach.linkify(
+            sanitized,
+            protocols=ALLOWED_PROTOCOLS,
+            parse_email=True
+        )
+    
+    return sanitized
+
+
+def sanitize_text(content: Optional[str]) -> str:
+    """
+    Strip all HTML tags from content, leaving only plain text.
+    Useful for fields that should not contain any HTML.
+    
+    Args:
+        content: The content to sanitize (can be None)
+    
+    Returns:
+        Plain text string with all HTML removed
+    """
+    if not content:
+        return ''
+    
+    if not isinstance(content, str):
+        content = str(content)
+    
+    # Strip all HTML tags
+    return bleach.clean(content, tags=[], strip=True)
+
+
+def sanitize_filename(filename: str) -> str:
+    """
+    Sanitize filename to prevent path traversal and other attacks.
+    
+    Args:
+        filename: The original filename
+    
+    Returns:
+        Sanitized filename safe for filesystem operations
+    """
+    import os
+    import secrets
+    from pathlib import Path
+    
+    if not filename:
+        # Generate a random filename if none provided
+        return f"{secrets.token_urlsafe(16)}.bin"
+    
+    # Remove path components (prevent directory traversal)
+    filename = os.path.basename(filename)
+    
+    # Remove dangerous characters
+    # Keep only alphanumeric, dots, dashes, and underscores
+    safe_chars = []
+    for char in filename:
+        if char.isalnum() or char in '._-':
+            safe_chars.append(char)
+        else:
+            safe_chars.append('_')
+    
+    filename = ''.join(safe_chars)
+    
+    # Limit length (filesystem limit is typically 255)
+    if len(filename) > 255:
+        name, ext = os.path.splitext(filename)
+        max_name_length = 255 - len(ext)
+        filename = name[:max_name_length] + ext
+    
+    # Ensure filename is not empty
+    if not filename or filename == '.' or filename == '..':
+        filename = f"{secrets.token_urlsafe(16)}.bin"
+    
+    return filename
+
+
+def sanitize_url(url: Optional[str]) -> Optional[str]:
+    """
+    Sanitize URL to ensure it uses allowed protocols.
+    
+    Args:
+        url: The URL to sanitize
+    
+    Returns:
+        Sanitized URL or None if invalid
+    """
+    if not url:
+        return None
+    
+    if not isinstance(url, str):
+        url = str(url)
+    
+    # Check if URL uses allowed protocol
+    url_lower = url.lower().strip()
+    if any(url_lower.startswith(proto + ':') for proto in ALLOWED_PROTOCOLS):
+        return url
+    
+    # If no protocol, assume https
+    if '://' not in url:
+        return f'https://{url}'
+    
+    # Invalid protocol - return None
+    return None
+

Backend/venv/bin/bandit

@@ -0,0 +1,7 @@
+#!/home/gnx/Desktop/Hotel-Booking/Backend/venv/bin/python
+import sys
+from bandit.cli.main import main
+if __name__ == '__main__':
+    if sys.argv[0].endswith('.exe'):
+        sys.argv[0] = sys.argv[0][:-4]
+    sys.exit(main())

Backend/venv/bin/bandit-baseline

@@ -0,0 +1,7 @@
+#!/home/gnx/Desktop/Hotel-Booking/Backend/venv/bin/python
+import sys
+from bandit.cli.baseline import main
+if __name__ == '__main__':
+    if sys.argv[0].endswith('.exe'):
+        sys.argv[0] = sys.argv[0][:-4]
+    sys.exit(main())

Backend/venv/bin/bandit-config-generator

@@ -0,0 +1,7 @@
+#!/home/gnx/Desktop/Hotel-Booking/Backend/venv/bin/python
+import sys
+from bandit.cli.config_generator import main
+if __name__ == '__main__':
+    if sys.argv[0].endswith('.exe'):
+        sys.argv[0] = sys.argv[0][:-4]
+    sys.exit(main())

Backend/venv/bin/doesitcache

@@ -0,0 +1,7 @@
+#!/home/gnx/Desktop/Hotel-Booking/Backend/venv/bin/python
+import sys
+from cachecontrol._cmd import main
+if __name__ == '__main__':
+    if sys.argv[0].endswith('.exe'):
+        sys.argv[0] = sys.argv[0][:-4]
+    sys.exit(main())

Backend/venv/bin/fastapi

@@ -0,0 +1,7 @@
+#!/home/gnx/Desktop/Hotel-Booking/Backend/venv/bin/python
+import sys
+from fastapi.cli import main
+if __name__ == '__main__':
+    if sys.argv[0].endswith('.exe'):
+        sys.argv[0] = sys.argv[0][:-4]
+    sys.exit(main())

Backend/venv/bin/markdown-it

@@ -0,0 +1,7 @@
+#!/home/gnx/Desktop/Hotel-Booking/Backend/venv/bin/python
+import sys
+from markdown_it.cli.parse import main
+if __name__ == '__main__':
+    if sys.argv[0].endswith('.exe'):
+        sys.argv[0] = sys.argv[0][:-4]
+    sys.exit(main())

Backend/venv/bin/nltk

@@ -0,0 +1,7 @@
+#!/home/gnx/Desktop/Hotel-Booking/Backend/venv/bin/python
+import sys
+from nltk.cli import cli
+if __name__ == '__main__':
+    if sys.argv[0].endswith('.exe'):
+        sys.argv[0] = sys.argv[0][:-4]
+    sys.exit(cli())

Backend/venv/bin/pip-audit

@@ -0,0 +1,7 @@
+#!/home/gnx/Desktop/Hotel-Booking/Backend/venv/bin/python
+import sys
+from pip_audit._cli import audit
+if __name__ == '__main__':
+    if sys.argv[0].endswith('.exe'):
+        sys.argv[0] = sys.argv[0][:-4]
+    sys.exit(audit())

Backend/venv/bin/safety

@@ -0,0 +1,7 @@
+#!/home/gnx/Desktop/Hotel-Booking/Backend/venv/bin/python
+import sys
+from safety.cli import cli
+if __name__ == '__main__':
+    if sys.argv[0].endswith('.exe'):
+        sys.argv[0] = sys.argv[0][:-4]
+    sys.exit(cli())

Backend/venv/bin/tqdm

@@ -0,0 +1,7 @@
+#!/home/gnx/Desktop/Hotel-Booking/Backend/venv/bin/python
+import sys
+from tqdm.cli import main
+if __name__ == '__main__':
+    if sys.argv[0].endswith('.exe'):
+        sys.argv[0] = sys.argv[0][:-4]
+    sys.exit(main())

Backend/venv/bin/typer

@@ -0,0 +1,7 @@
+#!/home/gnx/Desktop/Hotel-Booking/Backend/venv/bin/python
+import sys
+from typer.cli import main
+if __name__ == '__main__':
+    if sys.argv[0].endswith('.exe'):
+        sys.argv[0] = sys.argv[0][:-4]
+    sys.exit(main())

Backend/venv/lib/python3.12/site-packages/Jinja2-3.1.2.dist-info/RECORD

@@ -1,59 +0,0 @@
-Jinja2-3.1.2.dist-info/INSTALLER,sha256=zuuue4knoyJ-UwPPXg8fezS7VCrXJQrAP7zeNuwvFQg,4
-Jinja2-3.1.2.dist-info/LICENSE.rst,sha256=O0nc7kEF6ze6wQ-vG-JgQI_oXSUrjp3y4JefweCUQ3s,1475
-Jinja2-3.1.2.dist-info/METADATA,sha256=PZ6v2SIidMNixR7MRUX9f7ZWsPwtXanknqiZUmRbh4U,3539
-Jinja2-3.1.2.dist-info/RECORD,,
-Jinja2-3.1.2.dist-info/REQUESTED,sha256=47DEQpj8HBSa-_TImW-5JCeuQeRkm5NMpJWZG3hSuFU,0
-Jinja2-3.1.2.dist-info/WHEEL,sha256=G16H4A3IeoQmnOrYV4ueZGKSjhipXx8zc8nu9FGlvMA,92
-Jinja2-3.1.2.dist-info/entry_points.txt,sha256=zRd62fbqIyfUpsRtU7EVIFyiu1tPwfgO7EvPErnxgTE,59
-Jinja2-3.1.2.dist-info/top_level.txt,sha256=PkeVWtLb3-CqjWi1fO29OCbj55EhX_chhKrCdrVe_zs,7
-jinja2/__init__.py,sha256=8vGduD8ytwgD6GDSqpYc2m3aU-T7PKOAddvVXgGr_Fs,1927
-jinja2/__pycache__/__init__.cpython-312.pyc,,
-jinja2/__pycache__/_identifier.cpython-312.pyc,,
-jinja2/__pycache__/async_utils.cpython-312.pyc,,
-jinja2/__pycache__/bccache.cpython-312.pyc,,
-jinja2/__pycache__/compiler.cpython-312.pyc,,
-jinja2/__pycache__/constants.cpython-312.pyc,,
-jinja2/__pycache__/debug.cpython-312.pyc,,
-jinja2/__pycache__/defaults.cpython-312.pyc,,
-jinja2/__pycache__/environment.cpython-312.pyc,,
-jinja2/__pycache__/exceptions.cpython-312.pyc,,
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Backend/venv/lib/python3.12/site-packages/Jinja2-3.1.2.dist-info/entry_points.txt

@@ -1,2 +0,0 @@
-[babel.extractors]
-jinja2 = jinja2.ext:babel_extract[i18n]

Backend/venv/lib/python3.12/site-packages/Jinja2-3.1.2.dist-info/top_level.txt

@@ -1 +0,0 @@
-jinja2

Backend/venv/lib/python3.12/site-packages/PIL/AvifImagePlugin.py

@@ -0,0 +1,291 @@
+from __future__ import annotations
+
+import os
+from io import BytesIO
+from typing import IO
+
+from . import ExifTags, Image, ImageFile
+
+try:
+    from . import _avif
+
+    SUPPORTED = True
+except ImportError:
+    SUPPORTED = False
+
+# Decoder options as module globals, until there is a way to pass parameters
+# to Image.open (see https://github.com/python-pillow/Pillow/issues/569)
+DECODE_CODEC_CHOICE = "auto"
+DEFAULT_MAX_THREADS = 0
+
+
+def get_codec_version(codec_name: str) -> str | None:
+    versions = _avif.codec_versions()
+    for version in versions.split(", "):
+        if version.split(" [")[0] == codec_name:
+            return version.split(":")[-1].split(" ")[0]
+    return None
+
+
+def _accept(prefix: bytes) -> bool | str:
+    if prefix[4:8] != b"ftyp":
+        return False
+    major_brand = prefix[8:12]
+    if major_brand in (
+        # coding brands
+        b"avif",
+        b"avis",
+        # We accept files with AVIF container brands; we can't yet know if
+        # the ftyp box has the correct compatible brands, but if it doesn't
+        # then the plugin will raise a SyntaxError which Pillow will catch
+        # before moving on to the next plugin that accepts the file.
+        #
+        # Also, because this file might not actually be an AVIF file, we
+        # don't raise an error if AVIF support isn't properly compiled.
+        b"mif1",
+        b"msf1",
+    ):
+        if not SUPPORTED:
+            return (
+                "image file could not be identified because AVIF support not installed"
+            )
+        return True
+    return False
+
+
+def _get_default_max_threads() -> int:
+    if DEFAULT_MAX_THREADS:
+        return DEFAULT_MAX_THREADS
+    if hasattr(os, "sched_getaffinity"):
+        return len(os.sched_getaffinity(0))
+    else:
+        return os.cpu_count() or 1
+
+
+class AvifImageFile(ImageFile.ImageFile):
+    format = "AVIF"
+    format_description = "AVIF image"
+    __frame = -1
+
+    def _open(self) -> None:
+        if not SUPPORTED:
+            msg = "image file could not be opened because AVIF support not installed"
+            raise SyntaxError(msg)
+
+        if DECODE_CODEC_CHOICE != "auto" and not _avif.decoder_codec_available(
+            DECODE_CODEC_CHOICE
+        ):
+            msg = "Invalid opening codec"
+            raise ValueError(msg)
+        self._decoder = _avif.AvifDecoder(
+            self.fp.read(),
+            DECODE_CODEC_CHOICE,
+            _get_default_max_threads(),
+        )
+
+        # Get info from decoder
+        self._size, self.n_frames, self._mode, icc, exif, exif_orientation, xmp = (
+            self._decoder.get_info()
+        )
+        self.is_animated = self.n_frames > 1
+
+        if icc:
+            self.info["icc_profile"] = icc
+        if xmp:
+            self.info["xmp"] = xmp
+
+        if exif_orientation != 1 or exif:
+            exif_data = Image.Exif()
+            if exif:
+                exif_data.load(exif)
+                original_orientation = exif_data.get(ExifTags.Base.Orientation, 1)
+            else:
+                original_orientation = 1
+            if exif_orientation != original_orientation:
+                exif_data[ExifTags.Base.Orientation] = exif_orientation
+                exif = exif_data.tobytes()
+        if exif:
+            self.info["exif"] = exif
+        self.seek(0)
+
+    def seek(self, frame: int) -> None:
+        if not self._seek_check(frame):
+            return
+
+        # Set tile
+        self.__frame = frame
+        self.tile = [ImageFile._Tile("raw", (0, 0) + self.size, 0, self.mode)]
+
+    def load(self) -> Image.core.PixelAccess | None:
+        if self.tile:
+            # We need to load the image data for this frame
+            data, timescale, pts_in_timescales, duration_in_timescales = (
+                self._decoder.get_frame(self.__frame)
+            )
+            self.info["timestamp"] = round(1000 * (pts_in_timescales / timescale))
+            self.info["duration"] = round(1000 * (duration_in_timescales / timescale))
+
+            if self.fp and self._exclusive_fp:
+                self.fp.close()
+            self.fp = BytesIO(data)
+
+        return super().load()
+
+    def load_seek(self, pos: int) -> None:
+        pass
+
+    def tell(self) -> int:
+        return self.__frame
+
+
+def _save_all(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
+    _save(im, fp, filename, save_all=True)
+
+
+def _save(
+    im: Image.Image, fp: IO[bytes], filename: str | bytes, save_all: bool = False
+) -> None:
+    info = im.encoderinfo.copy()
+    if save_all:
+        append_images = list(info.get("append_images", []))
+    else:
+        append_images = []
+
+    total = 0
+    for ims in [im] + append_images:
+        total += getattr(ims, "n_frames", 1)
+
+    quality = info.get("quality", 75)
+    if not isinstance(quality, int) or quality < 0 or quality > 100:
+        msg = "Invalid quality setting"
+        raise ValueError(msg)
+
+    duration = info.get("duration", 0)
+    subsampling = info.get("subsampling", "4:2:0")
+    speed = info.get("speed", 6)
+    max_threads = info.get("max_threads", _get_default_max_threads())
+    codec = info.get("codec", "auto")
+    if codec != "auto" and not _avif.encoder_codec_available(codec):
+        msg = "Invalid saving codec"
+        raise ValueError(msg)
+    range_ = info.get("range", "full")
+    tile_rows_log2 = info.get("tile_rows", 0)
+    tile_cols_log2 = info.get("tile_cols", 0)
+    alpha_premultiplied = bool(info.get("alpha_premultiplied", False))
+    autotiling = bool(info.get("autotiling", tile_rows_log2 == tile_cols_log2 == 0))
+
+    icc_profile = info.get("icc_profile", im.info.get("icc_profile"))
+    exif_orientation = 1
+    if exif := info.get("exif"):
+        if isinstance(exif, Image.Exif):
+            exif_data = exif
+        else:
+            exif_data = Image.Exif()
+            exif_data.load(exif)
+        if ExifTags.Base.Orientation in exif_data:
+            exif_orientation = exif_data.pop(ExifTags.Base.Orientation)
+            exif = exif_data.tobytes() if exif_data else b""
+        elif isinstance(exif, Image.Exif):
+            exif = exif_data.tobytes()
+
+    xmp = info.get("xmp")
+
+    if isinstance(xmp, str):
+        xmp = xmp.encode("utf-8")
+
+    advanced = info.get("advanced")
+    if advanced is not None:
+        if isinstance(advanced, dict):
+            advanced = advanced.items()
+        try:
+            advanced = tuple(advanced)
+        except TypeError:
+            invalid = True
+        else:
+            invalid = any(not isinstance(v, tuple) or len(v) != 2 for v in advanced)
+        if invalid:
+            msg = (
+                "advanced codec options must be a dict of key-value string "
+                "pairs or a series of key-value two-tuples"
+            )
+            raise ValueError(msg)
+
+    # Setup the AVIF encoder
+    enc = _avif.AvifEncoder(
+        im.size,
+        subsampling,
+        quality,
+        speed,
+        max_threads,
+        codec,
+        range_,
+        tile_rows_log2,
+        tile_cols_log2,
+        alpha_premultiplied,
+        autotiling,
+        icc_profile or b"",
+        exif or b"",
+        exif_orientation,
+        xmp or b"",
+        advanced,
+    )
+
+    # Add each frame
+    frame_idx = 0
+    frame_duration = 0
+    cur_idx = im.tell()
+    is_single_frame = total == 1
+    try:
+        for ims in [im] + append_images:
+            # Get number of frames in this image
+            nfr = getattr(ims, "n_frames", 1)
+
+            for idx in range(nfr):
+                ims.seek(idx)
+
+                # Make sure image mode is supported
+                frame = ims
+                rawmode = ims.mode
+                if ims.mode not in {"RGB", "RGBA"}:
+                    rawmode = "RGBA" if ims.has_transparency_data else "RGB"
+                    frame = ims.convert(rawmode)
+
+                # Update frame duration
+                if isinstance(duration, (list, tuple)):
+                    frame_duration = duration[frame_idx]
+                else:
+                    frame_duration = duration
+
+                # Append the frame to the animation encoder
+                enc.add(
+                    frame.tobytes("raw", rawmode),
+                    frame_duration,
+                    frame.size,
+                    rawmode,
+                    is_single_frame,
+                )
+
+                # Update frame index
+                frame_idx += 1
+
+                if not save_all:
+                    break
+
+    finally:
+        im.seek(cur_idx)
+
+    # Get the final output from the encoder
+    data = enc.finish()
+    if data is None:
+        msg = "cannot write file as AVIF (encoder returned None)"
+        raise OSError(msg)
+
+    fp.write(data)
+
+
+Image.register_open(AvifImageFile.format, AvifImageFile, _accept)
+if SUPPORTED:
+    Image.register_save(AvifImageFile.format, _save)
+    Image.register_save_all(AvifImageFile.format, _save_all)
+    Image.register_extensions(AvifImageFile.format, [".avif", ".avifs"])
+    Image.register_mime(AvifImageFile.format, "image/avif")

Backend/venv/lib/python3.12/site-packages/PIL/BdfFontFile.py

@@ -20,29 +20,30 @@
 """
 Parse X Bitmap Distribution Format (BDF)
 """
+from __future__ import annotations
 
+from typing import BinaryIO
 
 from . import FontFile, Image
 
-bdf_slant = {
-    "R": "Roman",
-    "I": "Italic",
-    "O": "Oblique",
-    "RI": "Reverse Italic",
-    "RO": "Reverse Oblique",
-    "OT": "Other",
-}
 
-bdf_spacing = {"P": "Proportional", "M": "Monospaced", "C": "Cell"}
+def bdf_char(
-
+    f: BinaryIO,
-
+) -> (
-def bdf_char(f):
+    tuple[
+        str,
+        int,
+        tuple[tuple[int, int], tuple[int, int, int, int], tuple[int, int, int, int]],
+        Image.Image,
+    ]
+    | None
+):
     # skip to STARTCHAR
     while True:
         s = f.readline()
         if not s:
             return None
-        if s[:9] == b"STARTCHAR":
+        if s.startswith(b"STARTCHAR"):
             break
     id = s[9:].strip().decode("ascii")
 
@@ -50,19 +51,18 @@ def bdf_char(f):
     props = {}
     while True:
         s = f.readline()
-        if not s or s[:6] == b"BITMAP":
+        if not s or s.startswith(b"BITMAP"):
             break
         i = s.find(b" ")
         props[s[:i].decode("ascii")] = s[i + 1 : -1].decode("ascii")
 
     # load bitmap
-    bitmap = []
+    bitmap = bytearray()
     while True:
         s = f.readline()
-        if not s or s[:7] == b"ENDCHAR":
+        if not s or s.startswith(b"ENDCHAR"):
             break
-        bitmap.append(s[:-1])
+        bitmap += s[:-1]
-    bitmap = b"".join(bitmap)
 
     # The word BBX
     # followed by the width in x (BBw), height in y (BBh),
@@ -92,11 +92,11 @@ def bdf_char(f):
 class BdfFontFile(FontFile.FontFile):
     """Font file plugin for the X11 BDF format."""
 
-    def __init__(self, fp):
+    def __init__(self, fp: BinaryIO) -> None:
         super().__init__()
 
         s = fp.readline()
-        if s[:13] != b"STARTFONT 2.1":
+        if not s.startswith(b"STARTFONT 2.1"):
             msg = "not a valid BDF file"
             raise SyntaxError(msg)
 
@@ -105,7 +105,7 @@ class BdfFontFile(FontFile.FontFile):
 
         while True:
             s = fp.readline()
-            if not s or s[:13] == b"ENDPROPERTIES":
+            if not s or s.startswith(b"ENDPROPERTIES"):
                 break
             i = s.find(b" ")
             props[s[:i].decode("ascii")] = s[i + 1 : -1].decode("ascii")

Backend/venv/lib/python3.12/site-packages/PIL/BlpImagePlugin.py

@@ -29,10 +29,14 @@ BLP files come in many different flavours:
   - DXT5 compression is used if alpha_encoding == 7.
 """
 
+from __future__ import annotations
+
+import abc
 import os
 import struct
 from enum import IntEnum
 from io import BytesIO
+from typing import IO
 
 from . import Image, ImageFile
 
@@ -53,11 +57,13 @@ class AlphaEncoding(IntEnum):
     DXT5 = 7
 
 
-def unpack_565(i):
+def unpack_565(i: int) -> tuple[int, int, int]:
     return ((i >> 11) & 0x1F) << 3, ((i >> 5) & 0x3F) << 2, (i & 0x1F) << 3
 
 
-def decode_dxt1(data, alpha=False):
+def decode_dxt1(
+    data: bytes, alpha: bool = False
+) -> tuple[bytearray, bytearray, bytearray, bytearray]:
     """
     input: one "row" of data (i.e. will produce 4*width pixels)
     """
@@ -65,9 +71,9 @@ def decode_dxt1(data, alpha=False):
     blocks = len(data) // 8  # number of blocks in row
     ret = (bytearray(), bytearray(), bytearray(), bytearray())
 
-    for block in range(blocks):
+    for block_index in range(blocks):
         # Decode next 8-byte block.
-        idx = block * 8
+        idx = block_index * 8
         color0, color1, bits = struct.unpack_from("<HHI", data, idx)
 
         r0, g0, b0 = unpack_565(color0)
@@ -112,7 +118,7 @@ def decode_dxt1(data, alpha=False):
     return ret
 
 
-def decode_dxt3(data):
+def decode_dxt3(data: bytes) -> tuple[bytearray, bytearray, bytearray, bytearray]:
     """
     input: one "row" of data (i.e. will produce 4*width pixels)
     """
@@ -120,8 +126,8 @@ def decode_dxt3(data):
     blocks = len(data) // 16  # number of blocks in row
     ret = (bytearray(), bytearray(), bytearray(), bytearray())
 
-    for block in range(blocks):
+    for block_index in range(blocks):
-        idx = block * 16
+        idx = block_index * 16
         block = data[idx : idx + 16]
         # Decode next 16-byte block.
         bits = struct.unpack_from("<8B", block)
@@ -165,7 +171,7 @@ def decode_dxt3(data):
     return ret
 
 
-def decode_dxt5(data):
+def decode_dxt5(data: bytes) -> tuple[bytearray, bytearray, bytearray, bytearray]:
     """
     input: one "row" of data (i.e. will produce 4 * width pixels)
     """
@@ -173,8 +179,8 @@ def decode_dxt5(data):
     blocks = len(data) // 16  # number of blocks in row
     ret = (bytearray(), bytearray(), bytearray(), bytearray())
 
-    for block in range(blocks):
+    for block_index in range(blocks):
-        idx = block * 16
+        idx = block_index * 16
         block = data[idx : idx + 16]
         # Decode next 16-byte block.
         a0, a1 = struct.unpack_from("<BB", block)
@@ -239,8 +245,8 @@ class BLPFormatError(NotImplementedError):
     pass
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
-    return prefix[:4] in (b"BLP1", b"BLP2")
+    return prefix.startswith((b"BLP1", b"BLP2"))
 
 
 class BlpImageFile(ImageFile.ImageFile):
@@ -251,60 +257,65 @@ class BlpImageFile(ImageFile.ImageFile):
     format = "BLP"
     format_description = "Blizzard Mipmap Format"
 
-    def _open(self):
+    def _open(self) -> None:
         self.magic = self.fp.read(4)
-
+        if not _accept(self.magic):
-        self.fp.seek(5, os.SEEK_CUR)
-        (self._blp_alpha_depth,) = struct.unpack("<b", self.fp.read(1))
-
-        self.fp.seek(2, os.SEEK_CUR)
-        self._size = struct.unpack("<II", self.fp.read(8))
-
-        if self.magic in (b"BLP1", b"BLP2"):
-            decoder = self.magic.decode()
-        else:
             msg = f"Bad BLP magic {repr(self.magic)}"
             raise BLPFormatError(msg)
 
-        self._mode = "RGBA" if self._blp_alpha_depth else "RGB"
+        compression = struct.unpack("<i", self.fp.read(4))[0]
-        self.tile = [(decoder, (0, 0) + self.size, 0, (self.mode, 0, 1))]
+        if self.magic == b"BLP1":
+            alpha = struct.unpack("<I", self.fp.read(4))[0] != 0
+        else:
+            encoding = struct.unpack("<b", self.fp.read(1))[0]
+            alpha = struct.unpack("<b", self.fp.read(1))[0] != 0
+            alpha_encoding = struct.unpack("<b", self.fp.read(1))[0]
+            self.fp.seek(1, os.SEEK_CUR)  # mips
+
+        self._size = struct.unpack("<II", self.fp.read(8))
+
+        args: tuple[int, int, bool] | tuple[int, int, bool, int]
+        if self.magic == b"BLP1":
+            encoding = struct.unpack("<i", self.fp.read(4))[0]
+            self.fp.seek(4, os.SEEK_CUR)  # subtype
+
+            args = (compression, encoding, alpha)
+            offset = 28
+        else:
+            args = (compression, encoding, alpha, alpha_encoding)
+            offset = 20
+
+        decoder = self.magic.decode()
+
+        self._mode = "RGBA" if alpha else "RGB"
+        self.tile = [ImageFile._Tile(decoder, (0, 0) + self.size, offset, args)]
 
 
-class _BLPBaseDecoder(ImageFile.PyDecoder):
+class _BLPBaseDecoder(abc.ABC, ImageFile.PyDecoder):
     _pulls_fd = True
 
-    def decode(self, buffer):
+    def decode(self, buffer: bytes | Image.SupportsArrayInterface) -> tuple[int, int]:
         try:
-            self._read_blp_header()
+            self._read_header()
             self._load()
         except struct.error as e:
             msg = "Truncated BLP file"
             raise OSError(msg) from e
         return -1, 0
 
-    def _read_blp_header(self):
+    @abc.abstractmethod
-        self.fd.seek(4)
+    def _load(self) -> None:
-        (self._blp_compression,) = struct.unpack("<i", self._safe_read(4))
+        pass
 
-        (self._blp_encoding,) = struct.unpack("<b", self._safe_read(1))
+    def _read_header(self) -> None:
-        (self._blp_alpha_depth,) = struct.unpack("<b", self._safe_read(1))
+        self._offsets = struct.unpack("<16I", self._safe_read(16 * 4))
-        (self._blp_alpha_encoding,) = struct.unpack("<b", self._safe_read(1))
+        self._lengths = struct.unpack("<16I", self._safe_read(16 * 4))
-        self.fd.seek(1, os.SEEK_CUR)  # mips
 
-        self.size = struct.unpack("<II", self._safe_read(8))
+    def _safe_read(self, length: int) -> bytes:
-
+        assert self.fd is not None
-        if isinstance(self, BLP1Decoder):
-            # Only present for BLP1
-            (self._blp_encoding,) = struct.unpack("<i", self._safe_read(4))
-            self.fd.seek(4, os.SEEK_CUR)  # subtype
-
-        self._blp_offsets = struct.unpack("<16I", self._safe_read(16 * 4))
-        self._blp_lengths = struct.unpack("<16I", self._safe_read(16 * 4))
-
-    def _safe_read(self, length):
         return ImageFile._safe_read(self.fd, length)
 
-    def _read_palette(self):
+    def _read_palette(self) -> list[tuple[int, int, int, int]]:
         ret = []
         for i in range(256):
             try:
@@ -314,110 +325,115 @@ class _BLPBaseDecoder(ImageFile.PyDecoder):
             ret.append((b, g, r, a))
         return ret
 
-    def _read_bgra(self, palette):
+    def _read_bgra(
+        self, palette: list[tuple[int, int, int, int]], alpha: bool
+    ) -> bytearray:
         data = bytearray()
-        _data = BytesIO(self._safe_read(self._blp_lengths[0]))
+        _data = BytesIO(self._safe_read(self._lengths[0]))
         while True:
             try:
                 (offset,) = struct.unpack("<B", _data.read(1))
             except struct.error:
                 break
             b, g, r, a = palette[offset]
-            d = (r, g, b)
+            d: tuple[int, ...] = (r, g, b)
-            if self._blp_alpha_depth:
+            if alpha:
                 d += (a,)
             data.extend(d)
         return data
 
 
 class BLP1Decoder(_BLPBaseDecoder):
-    def _load(self):
+    def _load(self) -> None:
-        if self._blp_compression == Format.JPEG:
+        self._compression, self._encoding, alpha = self.args
+
+        if self._compression == Format.JPEG:
             self._decode_jpeg_stream()
 
-        elif self._blp_compression == 1:
+        elif self._compression == 1:
-            if self._blp_encoding in (4, 5):
+            if self._encoding in (4, 5):
                 palette = self._read_palette()
-                data = self._read_bgra(palette)
+                data = self._read_bgra(palette, alpha)
-                self.set_as_raw(bytes(data))
+                self.set_as_raw(data)
             else:
-                msg = f"Unsupported BLP encoding {repr(self._blp_encoding)}"
+                msg = f"Unsupported BLP encoding {repr(self._encoding)}"
                 raise BLPFormatError(msg)
         else:
-            msg = f"Unsupported BLP compression {repr(self._blp_encoding)}"
+            msg = f"Unsupported BLP compression {repr(self._encoding)}"
             raise BLPFormatError(msg)
 
-    def _decode_jpeg_stream(self):
+    def _decode_jpeg_stream(self) -> None:
         from .JpegImagePlugin import JpegImageFile
 
         (jpeg_header_size,) = struct.unpack("<I", self._safe_read(4))
         jpeg_header = self._safe_read(jpeg_header_size)
-        self._safe_read(self._blp_offsets[0] - self.fd.tell())  # What IS this?
+        assert self.fd is not None
-        data = self._safe_read(self._blp_lengths[0])
+        self._safe_read(self._offsets[0] - self.fd.tell())  # What IS this?
+        data = self._safe_read(self._lengths[0])
         data = jpeg_header + data
-        data = BytesIO(data)
+        image = JpegImageFile(BytesIO(data))
-        image = JpegImageFile(data)
         Image._decompression_bomb_check(image.size)
         if image.mode == "CMYK":
-            decoder_name, extents, offset, args = image.tile[0]
+            args = image.tile[0].args
-            image.tile = [(decoder_name, extents, offset, (args[0], "CMYK"))]
+            assert isinstance(args, tuple)
-        r, g, b = image.convert("RGB").split()
+            image.tile = [image.tile[0]._replace(args=(args[0], "CMYK"))]
-        image = Image.merge("RGB", (b, g, r))
+        self.set_as_raw(image.convert("RGB").tobytes(), "BGR")
-        self.set_as_raw(image.tobytes())
 
 
 class BLP2Decoder(_BLPBaseDecoder):
-    def _load(self):
+    def _load(self) -> None:
+        self._compression, self._encoding, alpha, self._alpha_encoding = self.args
+
         palette = self._read_palette()
 
-        self.fd.seek(self._blp_offsets[0])
+        assert self.fd is not None
+        self.fd.seek(self._offsets[0])
 
-        if self._blp_compression == 1:
+        if self._compression == 1:
             # Uncompressed or DirectX compression
 
-            if self._blp_encoding == Encoding.UNCOMPRESSED:
+            if self._encoding == Encoding.UNCOMPRESSED:
-                data = self._read_bgra(palette)
+                data = self._read_bgra(palette, alpha)
 
-            elif self._blp_encoding == Encoding.DXT:
+            elif self._encoding == Encoding.DXT:
                 data = bytearray()
-                if self._blp_alpha_encoding == AlphaEncoding.DXT1:
+                if self._alpha_encoding == AlphaEncoding.DXT1:
-                    linesize = (self.size[0] + 3) // 4 * 8
+                    linesize = (self.state.xsize + 3) // 4 * 8
-                    for yb in range((self.size[1] + 3) // 4):
+                    for yb in range((self.state.ysize + 3) // 4):
-                        for d in decode_dxt1(
+                        for d in decode_dxt1(self._safe_read(linesize), alpha):
-                            self._safe_read(linesize), alpha=bool(self._blp_alpha_depth)
-                        ):
                             data += d
 
-                elif self._blp_alpha_encoding == AlphaEncoding.DXT3:
+                elif self._alpha_encoding == AlphaEncoding.DXT3:
-                    linesize = (self.size[0] + 3) // 4 * 16
+                    linesize = (self.state.xsize + 3) // 4 * 16
-                    for yb in range((self.size[1] + 3) // 4):
+                    for yb in range((self.state.ysize + 3) // 4):
                         for d in decode_dxt3(self._safe_read(linesize)):
                             data += d
 
-                elif self._blp_alpha_encoding == AlphaEncoding.DXT5:
+                elif self._alpha_encoding == AlphaEncoding.DXT5:
-                    linesize = (self.size[0] + 3) // 4 * 16
+                    linesize = (self.state.xsize + 3) // 4 * 16
-                    for yb in range((self.size[1] + 3) // 4):
+                    for yb in range((self.state.ysize + 3) // 4):
                         for d in decode_dxt5(self._safe_read(linesize)):
                             data += d
                 else:
-                    msg = f"Unsupported alpha encoding {repr(self._blp_alpha_encoding)}"
+                    msg = f"Unsupported alpha encoding {repr(self._alpha_encoding)}"
                     raise BLPFormatError(msg)
             else:
-                msg = f"Unknown BLP encoding {repr(self._blp_encoding)}"
+                msg = f"Unknown BLP encoding {repr(self._encoding)}"
                 raise BLPFormatError(msg)
 
         else:
-            msg = f"Unknown BLP compression {repr(self._blp_compression)}"
+            msg = f"Unknown BLP compression {repr(self._compression)}"
             raise BLPFormatError(msg)
 
-        self.set_as_raw(bytes(data))
+        self.set_as_raw(data)
 
 
 class BLPEncoder(ImageFile.PyEncoder):
     _pushes_fd = True
 
-    def _write_palette(self):
+    def _write_palette(self) -> bytes:
         data = b""
+        assert self.im is not None
         palette = self.im.getpalette("RGBA", "RGBA")
         for i in range(len(palette) // 4):
             r, g, b, a = palette[i * 4 : (i + 1) * 4]
@@ -426,12 +442,13 @@ class BLPEncoder(ImageFile.PyEncoder):
             data += b"\x00" * 4
         return data
 
-    def encode(self, bufsize):
+    def encode(self, bufsize: int) -> tuple[int, int, bytes]:
         palette_data = self._write_palette()
 
         offset = 20 + 16 * 4 * 2 + len(palette_data)
         data = struct.pack("<16I", offset, *((0,) * 15))
 
+        assert self.im is not None
         w, h = self.im.size
         data += struct.pack("<16I", w * h, *((0,) * 15))
 
@@ -444,7 +461,7 @@ class BLPEncoder(ImageFile.PyEncoder):
         return len(data), 0, data
 
 
-def _save(im, fp, filename):
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     if im.mode != "P":
         msg = "Unsupported BLP image mode"
         raise ValueError(msg)
@@ -452,17 +469,23 @@ def _save(im, fp, filename):
     magic = b"BLP1" if im.encoderinfo.get("blp_version") == "BLP1" else b"BLP2"
     fp.write(magic)
 
+    assert im.palette is not None
     fp.write(struct.pack("<i", 1))  # Uncompressed or DirectX compression
-    fp.write(struct.pack("<b", Encoding.UNCOMPRESSED))
+
-    fp.write(struct.pack("<b", 1 if im.palette.mode == "RGBA" else 0))
+    alpha_depth = 1 if im.palette.mode == "RGBA" else 0
-    fp.write(struct.pack("<b", 0))  # alpha encoding
+    if magic == b"BLP1":
-    fp.write(struct.pack("<b", 0))  # mips
+        fp.write(struct.pack("<L", alpha_depth))
+    else:
+        fp.write(struct.pack("<b", Encoding.UNCOMPRESSED))
+        fp.write(struct.pack("<b", alpha_depth))
+        fp.write(struct.pack("<b", 0))  # alpha encoding
+        fp.write(struct.pack("<b", 0))  # mips
     fp.write(struct.pack("<II", *im.size))
     if magic == b"BLP1":
         fp.write(struct.pack("<i", 5))
         fp.write(struct.pack("<i", 0))
 
-    ImageFile._save(im, fp, [("BLP", (0, 0) + im.size, 0, im.mode)])
+    ImageFile._save(im, fp, [ImageFile._Tile("BLP", (0, 0) + im.size, 0, im.mode)])
 
 
 Image.register_open(BlpImageFile.format, BlpImageFile, _accept)

Backend/venv/lib/python3.12/site-packages/PIL/BmpImagePlugin.py

@@ -22,9 +22,10 @@
 #
 # See the README file for information on usage and redistribution.
 #
-
+from __future__ import annotations
 
 import os
+from typing import IO, Any
 
 from . import Image, ImageFile, ImagePalette
 from ._binary import i16le as i16
@@ -47,13 +48,15 @@ BIT2MODE = {
     32: ("RGB", "BGRX"),
 }
 
-
+USE_RAW_ALPHA = False
-def _accept(prefix):
-    return prefix[:2] == b"BM"
 
 
-def _dib_accept(prefix):
+def _accept(prefix: bytes) -> bool:
-    return i32(prefix) in [12, 40, 64, 108, 124]
+    return prefix.startswith(b"BM")
+
+
+def _dib_accept(prefix: bytes) -> bool:
+    return i32(prefix) in [12, 40, 52, 56, 64, 108, 124]
 
 
 # =============================================================================
@@ -71,31 +74,41 @@ class BmpImageFile(ImageFile.ImageFile):
     for k, v in COMPRESSIONS.items():
         vars()[k] = v
 
-    def _bitmap(self, header=0, offset=0):
+    def _bitmap(self, header: int = 0, offset: int = 0) -> None:
         """Read relevant info about the BMP"""
         read, seek = self.fp.read, self.fp.seek
         if header:
             seek(header)
         # read bmp header size @offset 14 (this is part of the header size)
-        file_info = {"header_size": i32(read(4)), "direction": -1}
+        file_info: dict[str, bool | int | tuple[int, ...]] = {
+            "header_size": i32(read(4)),
+            "direction": -1,
+        }
 
         # -------------------- If requested, read header at a specific position
         # read the rest of the bmp header, without its size
+        assert isinstance(file_info["header_size"], int)
         header_data = ImageFile._safe_read(self.fp, file_info["header_size"] - 4)
 
-        # -------------------------------------------------- IBM OS/2 Bitmap v1
+        # ------------------------------- Windows Bitmap v2, IBM OS/2 Bitmap v1
         # ----- This format has different offsets because of width/height types
+        # 12: BITMAPCOREHEADER/OS21XBITMAPHEADER
         if file_info["header_size"] == 12:
             file_info["width"] = i16(header_data, 0)
             file_info["height"] = i16(header_data, 2)
             file_info["planes"] = i16(header_data, 4)
             file_info["bits"] = i16(header_data, 6)
-            file_info["compression"] = self.RAW
+            file_info["compression"] = self.COMPRESSIONS["RAW"]
             file_info["palette_padding"] = 3
 
-        # --------------------------------------------- Windows Bitmap v2 to v5
+        # --------------------------------------------- Windows Bitmap v3 to v5
-        # v3, OS/2 v2, v4, v5
+        #  40: BITMAPINFOHEADER
-        elif file_info["header_size"] in (40, 64, 108, 124):
+        #  52: BITMAPV2HEADER
+        #  56: BITMAPV3HEADER
+        #  64: BITMAPCOREHEADER2/OS22XBITMAPHEADER
+        # 108: BITMAPV4HEADER
+        # 124: BITMAPV5HEADER
+        elif file_info["header_size"] in (40, 52, 56, 64, 108, 124):
             file_info["y_flip"] = header_data[7] == 0xFF
             file_info["direction"] = 1 if file_info["y_flip"] else -1
             file_info["width"] = i32(header_data, 0)
@@ -115,12 +128,16 @@ class BmpImageFile(ImageFile.ImageFile):
             )
             file_info["colors"] = i32(header_data, 28)
             file_info["palette_padding"] = 4
+            assert isinstance(file_info["pixels_per_meter"], tuple)
             self.info["dpi"] = tuple(x / 39.3701 for x in file_info["pixels_per_meter"])
-            if file_info["compression"] == self.BITFIELDS:
+            if file_info["compression"] == self.COMPRESSIONS["BITFIELDS"]:
-                if len(header_data) >= 52:
+                masks = ["r_mask", "g_mask", "b_mask"]
-                    for idx, mask in enumerate(
+                if len(header_data) >= 48:
-                        ["r_mask", "g_mask", "b_mask", "a_mask"]
+                    if len(header_data) >= 52:
-                    ):
+                        masks.append("a_mask")
+                    else:
+                        file_info["a_mask"] = 0x0
+                    for idx, mask in enumerate(masks):
                         file_info[mask] = i32(header_data, 36 + idx * 4)
                 else:
                     # 40 byte headers only have the three components in the
@@ -132,8 +149,12 @@ class BmpImageFile(ImageFile.ImageFile):
                     # location, but it is listed as a reserved component,
                     # and it is not generally an alpha channel
                     file_info["a_mask"] = 0x0
-                    for mask in ["r_mask", "g_mask", "b_mask"]:
+                    for mask in masks:
                         file_info[mask] = i32(read(4))
+                assert isinstance(file_info["r_mask"], int)
+                assert isinstance(file_info["g_mask"], int)
+                assert isinstance(file_info["b_mask"], int)
+                assert isinstance(file_info["a_mask"], int)
                 file_info["rgb_mask"] = (
                     file_info["r_mask"],
                     file_info["g_mask"],
@@ -151,33 +172,39 @@ class BmpImageFile(ImageFile.ImageFile):
 
         # ------------------ Special case : header is reported 40, which
         # ---------------------- is shorter than real size for bpp >= 16
+        assert isinstance(file_info["width"], int)
+        assert isinstance(file_info["height"], int)
         self._size = file_info["width"], file_info["height"]
 
         # ------- If color count was not found in the header, compute from bits
+        assert isinstance(file_info["bits"], int)
         file_info["colors"] = (
             file_info["colors"]
             if file_info.get("colors", 0)
             else (1 << file_info["bits"])
         )
+        assert isinstance(file_info["colors"], int)
         if offset == 14 + file_info["header_size"] and file_info["bits"] <= 8:
             offset += 4 * file_info["colors"]
 
         # ---------------------- Check bit depth for unusual unsupported values
-        self._mode, raw_mode = BIT2MODE.get(file_info["bits"], (None, None))
+        self._mode, raw_mode = BIT2MODE.get(file_info["bits"], ("", ""))
-        if self.mode is None:
+        if not self.mode:
             msg = f"Unsupported BMP pixel depth ({file_info['bits']})"
             raise OSError(msg)
 
         # ---------------- Process BMP with Bitfields compression (not palette)
         decoder_name = "raw"
-        if file_info["compression"] == self.BITFIELDS:
+        if file_info["compression"] == self.COMPRESSIONS["BITFIELDS"]:
-            SUPPORTED = {
+            SUPPORTED: dict[int, list[tuple[int, ...]]] = {
                 32: [
                     (0xFF0000, 0xFF00, 0xFF, 0x0),
                     (0xFF000000, 0xFF0000, 0xFF00, 0x0),
+                    (0xFF000000, 0xFF00, 0xFF, 0x0),
                     (0xFF000000, 0xFF0000, 0xFF00, 0xFF),
                     (0xFF, 0xFF00, 0xFF0000, 0xFF000000),
                     (0xFF0000, 0xFF00, 0xFF, 0xFF000000),
+                    (0xFF000000, 0xFF00, 0xFF, 0xFF0000),
                     (0x0, 0x0, 0x0, 0x0),
                 ],
                 24: [(0xFF0000, 0xFF00, 0xFF)],
@@ -186,9 +213,11 @@ class BmpImageFile(ImageFile.ImageFile):
             MASK_MODES = {
                 (32, (0xFF0000, 0xFF00, 0xFF, 0x0)): "BGRX",
                 (32, (0xFF000000, 0xFF0000, 0xFF00, 0x0)): "XBGR",
+                (32, (0xFF000000, 0xFF00, 0xFF, 0x0)): "BGXR",
                 (32, (0xFF000000, 0xFF0000, 0xFF00, 0xFF)): "ABGR",
                 (32, (0xFF, 0xFF00, 0xFF0000, 0xFF000000)): "RGBA",
                 (32, (0xFF0000, 0xFF00, 0xFF, 0xFF000000)): "BGRA",
+                (32, (0xFF000000, 0xFF00, 0xFF, 0xFF0000)): "BGAR",
                 (32, (0x0, 0x0, 0x0, 0x0)): "BGRA",
                 (24, (0xFF0000, 0xFF00, 0xFF)): "BGR",
                 (16, (0xF800, 0x7E0, 0x1F)): "BGR;16",
@@ -199,12 +228,14 @@ class BmpImageFile(ImageFile.ImageFile):
                     file_info["bits"] == 32
                     and file_info["rgba_mask"] in SUPPORTED[file_info["bits"]]
                 ):
+                    assert isinstance(file_info["rgba_mask"], tuple)
                     raw_mode = MASK_MODES[(file_info["bits"], file_info["rgba_mask"])]
                     self._mode = "RGBA" if "A" in raw_mode else self.mode
                 elif (
                     file_info["bits"] in (24, 16)
                     and file_info["rgb_mask"] in SUPPORTED[file_info["bits"]]
                 ):
+                    assert isinstance(file_info["rgb_mask"], tuple)
                     raw_mode = MASK_MODES[(file_info["bits"], file_info["rgb_mask"])]
                 else:
                     msg = "Unsupported BMP bitfields layout"
@@ -212,10 +243,15 @@ class BmpImageFile(ImageFile.ImageFile):
             else:
                 msg = "Unsupported BMP bitfields layout"
                 raise OSError(msg)
-        elif file_info["compression"] == self.RAW:
+        elif file_info["compression"] == self.COMPRESSIONS["RAW"]:
-            if file_info["bits"] == 32 and header == 22:  # 32-bit .cur offset
+            if file_info["bits"] == 32 and (
+                header == 22 or USE_RAW_ALPHA  # 32-bit .cur offset
+            ):
                 raw_mode, self._mode = "BGRA", "RGBA"
-        elif file_info["compression"] in (self.RLE8, self.RLE4):
+        elif file_info["compression"] in (
+            self.COMPRESSIONS["RLE8"],
+            self.COMPRESSIONS["RLE4"],
+        ):
             decoder_name = "bmp_rle"
         else:
             msg = f"Unsupported BMP compression ({file_info['compression']})"
@@ -228,23 +264,24 @@ class BmpImageFile(ImageFile.ImageFile):
                 msg = f"Unsupported BMP Palette size ({file_info['colors']})"
                 raise OSError(msg)
             else:
+                assert isinstance(file_info["palette_padding"], int)
                 padding = file_info["palette_padding"]
                 palette = read(padding * file_info["colors"])
-                greyscale = True
+                grayscale = True
                 indices = (
                     (0, 255)
                     if file_info["colors"] == 2
                     else list(range(file_info["colors"]))
                 )
 
-                # ----------------- Check if greyscale and ignore palette if so
+                # ----------------- Check if grayscale and ignore palette if so
                 for ind, val in enumerate(indices):
                     rgb = palette[ind * padding : ind * padding + 3]
                     if rgb != o8(val) * 3:
-                        greyscale = False
+                        grayscale = False
 
-                # ------- If all colors are grey, white or black, ditch palette
+                # ------- If all colors are gray, white or black, ditch palette
-                if greyscale:
+                if grayscale:
                     self._mode = "1" if file_info["colors"] == 2 else "L"
                     raw_mode = self.mode
                 else:
@@ -255,14 +292,15 @@ class BmpImageFile(ImageFile.ImageFile):
 
         # ---------------------------- Finally set the tile data for the plugin
         self.info["compression"] = file_info["compression"]
-        args = [raw_mode]
+        args: list[Any] = [raw_mode]
         if decoder_name == "bmp_rle":
-            args.append(file_info["compression"] == self.RLE4)
+            args.append(file_info["compression"] == self.COMPRESSIONS["RLE4"])
         else:
+            assert isinstance(file_info["width"], int)
             args.append(((file_info["width"] * file_info["bits"] + 31) >> 3) & (~3))
         args.append(file_info["direction"])
         self.tile = [
-            (
+            ImageFile._Tile(
                 decoder_name,
                 (0, 0, file_info["width"], file_info["height"]),
                 offset or self.fp.tell(),
@@ -270,7 +308,7 @@ class BmpImageFile(ImageFile.ImageFile):
             )
         ]
 
-    def _open(self):
+    def _open(self) -> None:
         """Open file, check magic number and read header"""
         # read 14 bytes: magic number, filesize, reserved, header final offset
         head_data = self.fp.read(14)
@@ -287,11 +325,13 @@ class BmpImageFile(ImageFile.ImageFile):
 class BmpRleDecoder(ImageFile.PyDecoder):
     _pulls_fd = True
 
-    def decode(self, buffer):
+    def decode(self, buffer: bytes | Image.SupportsArrayInterface) -> tuple[int, int]:
+        assert self.fd is not None
         rle4 = self.args[1]
         data = bytearray()
         x = 0
-        while len(data) < self.state.xsize * self.state.ysize:
+        dest_length = self.state.xsize * self.state.ysize
+        while len(data) < dest_length:
             pixels = self.fd.read(1)
             byte = self.fd.read(1)
             if not pixels or not byte:
@@ -351,7 +391,7 @@ class BmpRleDecoder(ImageFile.PyDecoder):
                     if self.fd.tell() % 2 != 0:
                         self.fd.seek(1, os.SEEK_CUR)
         rawmode = "L" if self.mode == "L" else "P"
-        self.set_as_raw(bytes(data), (rawmode, 0, self.args[-1]))
+        self.set_as_raw(bytes(data), rawmode, (0, self.args[-1]))
         return -1, 0
 
 
@@ -362,7 +402,7 @@ class DibImageFile(BmpImageFile):
     format = "DIB"
     format_description = "Windows Bitmap"
 
-    def _open(self):
+    def _open(self) -> None:
         self._bitmap()
 
 
@@ -380,11 +420,13 @@ SAVE = {
 }
 
 
-def _dib_save(im, fp, filename):
+def _dib_save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     _save(im, fp, filename, False)
 
 
-def _save(im, fp, filename, bitmap_header=True):
+def _save(
+    im: Image.Image, fp: IO[bytes], filename: str | bytes, bitmap_header: bool = True
+) -> None:
     try:
         rawmode, bits, colors = SAVE[im.mode]
     except KeyError as e:
@@ -396,16 +438,16 @@ def _save(im, fp, filename, bitmap_header=True):
     dpi = info.get("dpi", (96, 96))
 
     # 1 meter == 39.3701 inches
-    ppm = tuple(map(lambda x: int(x * 39.3701 + 0.5), dpi))
+    ppm = tuple(int(x * 39.3701 + 0.5) for x in dpi)
 
     stride = ((im.size[0] * bits + 7) // 8 + 3) & (~3)
     header = 40  # or 64 for OS/2 version 2
     image = stride * im.size[1]
 
     if im.mode == "1":
-        palette = b"".join(o8(i) * 4 for i in (0, 255))
+        palette = b"".join(o8(i) * 3 + b"\x00" for i in (0, 255))
     elif im.mode == "L":
-        palette = b"".join(o8(i) * 4 for i in range(256))
+        palette = b"".join(o8(i) * 3 + b"\x00" for i in range(256))
     elif im.mode == "P":
         palette = im.im.getpalette("RGB", "BGRX")
         colors = len(palette) // 4
@@ -446,7 +488,9 @@ def _save(im, fp, filename, bitmap_header=True):
     if palette:
         fp.write(palette)
 
-    ImageFile._save(im, fp, [("raw", (0, 0) + im.size, 0, (rawmode, stride, -1))])
+    ImageFile._save(
+        im, fp, [ImageFile._Tile("raw", (0, 0) + im.size, 0, (rawmode, stride, -1))]
+    )
 
 
 #

Backend/venv/lib/python3.12/site-packages/PIL/BufrStubImagePlugin.py

@@ -8,13 +8,17 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
+
+import os
+from typing import IO
 
 from . import Image, ImageFile
 
 _handler = None
 
 
-def register_handler(handler):
+def register_handler(handler: ImageFile.StubHandler | None) -> None:
     """
     Install application-specific BUFR image handler.
 
@@ -28,22 +32,20 @@ def register_handler(handler):
 # Image adapter
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
-    return prefix[:4] == b"BUFR" or prefix[:4] == b"ZCZC"
+    return prefix.startswith((b"BUFR", b"ZCZC"))
 
 
 class BufrStubImageFile(ImageFile.StubImageFile):
     format = "BUFR"
     format_description = "BUFR"
 
-    def _open(self):
+    def _open(self) -> None:
-        offset = self.fp.tell()
-
         if not _accept(self.fp.read(4)):
             msg = "Not a BUFR file"
             raise SyntaxError(msg)
 
-        self.fp.seek(offset)
+        self.fp.seek(-4, os.SEEK_CUR)
 
         # make something up
         self._mode = "F"
@@ -53,11 +55,11 @@ class BufrStubImageFile(ImageFile.StubImageFile):
         if loader:
             loader.open(self)
 
-    def _load(self):
+    def _load(self) -> ImageFile.StubHandler | None:
         return _handler
 
 
-def _save(im, fp, filename):
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     if _handler is None or not hasattr(_handler, "save"):
         msg = "BUFR save handler not installed"
         raise OSError(msg)

Backend/venv/lib/python3.12/site-packages/PIL/ContainerIO.py

@@ -13,18 +13,20 @@
 #
 # See the README file for information on usage and redistribution.
 #
-
+from __future__ import annotations
 
 import io
+from collections.abc import Iterable
+from typing import IO, AnyStr, NoReturn
 
 
-class ContainerIO:
+class ContainerIO(IO[AnyStr]):
     """
     A file object that provides read access to a part of an existing
     file (for example a TAR file).
     """
 
-    def __init__(self, file, offset, length):
+    def __init__(self, file: IO[AnyStr], offset: int, length: int) -> None:
         """
         Create file object.
 
@@ -32,7 +34,7 @@ class ContainerIO:
         :param offset: Start of region, in bytes.
         :param length: Size of region, in bytes.
         """
-        self.fh = file
+        self.fh: IO[AnyStr] = file
         self.pos = 0
         self.offset = offset
         self.length = length
@@ -41,10 +43,13 @@ class ContainerIO:
     ##
     # Always false.
 
-    def isatty(self):
+    def isatty(self) -> bool:
         return False
 
-    def seek(self, offset, mode=io.SEEK_SET):
+    def seekable(self) -> bool:
+        return True
+
+    def seek(self, offset: int, mode: int = io.SEEK_SET) -> int:
         """
         Move file pointer.
 
@@ -52,6 +57,7 @@ class ContainerIO:
         :param mode: Starting position. Use 0 for beginning of region, 1
            for current offset, and 2 for end of region.  You cannot move
            the pointer outside the defined region.
+        :returns: Offset from start of region, in bytes.
         """
         if mode == 1:
             self.pos = self.pos + offset
@@ -62,8 +68,9 @@ class ContainerIO:
         # clamp
         self.pos = max(0, min(self.pos, self.length))
         self.fh.seek(self.offset + self.pos)
+        return self.pos
 
-    def tell(self):
+    def tell(self) -> int:
         """
         Get current file pointer.
 
@@ -71,44 +78,51 @@ class ContainerIO:
         """
         return self.pos
 
-    def read(self, n=0):
+    def readable(self) -> bool:
+        return True
+
+    def read(self, n: int = -1) -> AnyStr:
         """
         Read data.
 
-        :param n: Number of bytes to read. If omitted or zero,
+        :param n: Number of bytes to read. If omitted, zero or negative,
             read until end of region.
         :returns: An 8-bit string.
         """
-        if n:
+        if n > 0:
             n = min(n, self.length - self.pos)
         else:
             n = self.length - self.pos
-        if not n:  # EOF
+        if n <= 0:  # EOF
-            return b"" if "b" in self.fh.mode else ""
+            return b"" if "b" in self.fh.mode else ""  # type: ignore[return-value]
         self.pos = self.pos + n
         return self.fh.read(n)
 
-    def readline(self):
+    def readline(self, n: int = -1) -> AnyStr:
         """
         Read a line of text.
 
+        :param n: Number of bytes to read. If omitted, zero or negative,
+            read until end of line.
         :returns: An 8-bit string.
         """
-        s = b"" if "b" in self.fh.mode else ""
+        s: AnyStr = b"" if "b" in self.fh.mode else ""  # type: ignore[assignment]
         newline_character = b"\n" if "b" in self.fh.mode else "\n"
         while True:
             c = self.read(1)
             if not c:
                 break
             s = s + c
-            if c == newline_character:
+            if c == newline_character or len(s) == n:
                 break
         return s
 
-    def readlines(self):
+    def readlines(self, n: int | None = -1) -> list[AnyStr]:
         """
         Read multiple lines of text.
 
+        :param n: Number of lines to read. If omitted, zero, negative or None,
+            read until end of region.
         :returns: A list of 8-bit strings.
         """
         lines = []
@@ -117,4 +131,43 @@ class ContainerIO:
             if not s:
                 break
             lines.append(s)
+            if len(lines) == n:
+                break
         return lines
+
+    def writable(self) -> bool:
+        return False
+
+    def write(self, b: AnyStr) -> NoReturn:
+        raise NotImplementedError()
+
+    def writelines(self, lines: Iterable[AnyStr]) -> NoReturn:
+        raise NotImplementedError()
+
+    def truncate(self, size: int | None = None) -> int:
+        raise NotImplementedError()
+
+    def __enter__(self) -> ContainerIO[AnyStr]:
+        return self
+
+    def __exit__(self, *args: object) -> None:
+        self.close()
+
+    def __iter__(self) -> ContainerIO[AnyStr]:
+        return self
+
+    def __next__(self) -> AnyStr:
+        line = self.readline()
+        if not line:
+            msg = "end of region"
+            raise StopIteration(msg)
+        return line
+
+    def fileno(self) -> int:
+        return self.fh.fileno()
+
+    def flush(self) -> None:
+        self.fh.flush()
+
+    def close(self) -> None:
+        self.fh.close()

Backend/venv/lib/python3.12/site-packages/PIL/CurImagePlugin.py

@@ -15,6 +15,8 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
+
 from . import BmpImagePlugin, Image
 from ._binary import i16le as i16
 from ._binary import i32le as i32
@@ -23,8 +25,8 @@ from ._binary import i32le as i32
 # --------------------------------------------------------------------
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
-    return prefix[:4] == b"\0\0\2\0"
+    return prefix.startswith(b"\0\0\2\0")
 
 
 ##
@@ -35,7 +37,8 @@ class CurImageFile(BmpImagePlugin.BmpImageFile):
     format = "CUR"
     format_description = "Windows Cursor"
 
-    def _open(self):
+    def _open(self) -> None:
+        assert self.fp is not None
         offset = self.fp.tell()
 
         # check magic
@@ -61,10 +64,7 @@ class CurImageFile(BmpImagePlugin.BmpImageFile):
 
         # patch up the bitmap height
         self._size = self.size[0], self.size[1] // 2
-        d, e, o, a = self.tile[0]
+        self.tile = [self.tile[0]._replace(extents=(0, 0) + self.size)]
-        self.tile[0] = d, (0, 0) + self.size, o, a
-
-        return
 
 
 #

Backend/venv/lib/python3.12/site-packages/PIL/DcxImagePlugin.py

@@ -20,15 +20,17 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 from . import Image
 from ._binary import i32le as i32
+from ._util import DeferredError
 from .PcxImagePlugin import PcxImageFile
 
 MAGIC = 0x3ADE68B1  # QUIZ: what's this value, then?
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return len(prefix) >= 4 and i32(prefix) == MAGIC
 
 
@@ -41,7 +43,7 @@ class DcxImageFile(PcxImageFile):
     format_description = "Intel DCX"
     _close_exclusive_fp_after_loading = False
 
-    def _open(self):
+    def _open(self) -> None:
         # Header
         s = self.fp.read(4)
         if not _accept(s):
@@ -57,20 +59,22 @@ class DcxImageFile(PcxImageFile):
             self._offset.append(offset)
 
         self._fp = self.fp
-        self.frame = None
+        self.frame = -1
         self.n_frames = len(self._offset)
         self.is_animated = self.n_frames > 1
         self.seek(0)
 
-    def seek(self, frame):
+    def seek(self, frame: int) -> None:
         if not self._seek_check(frame):
             return
+        if isinstance(self._fp, DeferredError):
+            raise self._fp.ex
         self.frame = frame
         self.fp = self._fp
         self.fp.seek(self._offset[frame])
         PcxImageFile._open(self)
 
-    def tell(self):
+    def tell(self) -> int:
         return self.frame
 
 

Backend/venv/lib/python3.12/site-packages/PIL/DdsImagePlugin.py

@@ -1,118 +1,338 @@
 """
-A Pillow loader for .dds files (S3TC-compressed aka DXTC)
+A Pillow plugin for .dds files (S3TC-compressed aka DXTC)
 Jerome Leclanche <jerome@leclan.ch>
 
 Documentation:
-  https://web.archive.org/web/20170802060935/http://oss.sgi.com/projects/ogl-sample/registry/EXT/texture_compression_s3tc.txt
+https://web.archive.org/web/20170802060935/http://oss.sgi.com/projects/ogl-sample/registry/EXT/texture_compression_s3tc.txt
 
 The contents of this file are hereby released in the public domain (CC0)
 Full text of the CC0 license:
-  https://creativecommons.org/publicdomain/zero/1.0/
+https://creativecommons.org/publicdomain/zero/1.0/
 """
 
+from __future__ import annotations
+
+import io
 import struct
-from io import BytesIO
+import sys
+from enum import IntEnum, IntFlag
+from typing import IO
 
 from . import Image, ImageFile, ImagePalette
+from ._binary import i32le as i32
+from ._binary import o8
 from ._binary import o32le as o32
 
 # Magic ("DDS ")
 DDS_MAGIC = 0x20534444
 
+
 # DDS flags
-DDSD_CAPS = 0x1
+class DDSD(IntFlag):
-DDSD_HEIGHT = 0x2
+    CAPS = 0x1
-DDSD_WIDTH = 0x4
+    HEIGHT = 0x2
-DDSD_PITCH = 0x8
+    WIDTH = 0x4
-DDSD_PIXELFORMAT = 0x1000
+    PITCH = 0x8
-DDSD_MIPMAPCOUNT = 0x20000
+    PIXELFORMAT = 0x1000
-DDSD_LINEARSIZE = 0x80000
+    MIPMAPCOUNT = 0x20000
-DDSD_DEPTH = 0x800000
+    LINEARSIZE = 0x80000
+    DEPTH = 0x800000
+
 
 # DDS caps
-DDSCAPS_COMPLEX = 0x8
+class DDSCAPS(IntFlag):
-DDSCAPS_TEXTURE = 0x1000
+    COMPLEX = 0x8
-DDSCAPS_MIPMAP = 0x400000
+    TEXTURE = 0x1000
+    MIPMAP = 0x400000
+
+
+class DDSCAPS2(IntFlag):
+    CUBEMAP = 0x200
+    CUBEMAP_POSITIVEX = 0x400
+    CUBEMAP_NEGATIVEX = 0x800
+    CUBEMAP_POSITIVEY = 0x1000
+    CUBEMAP_NEGATIVEY = 0x2000
+    CUBEMAP_POSITIVEZ = 0x4000
+    CUBEMAP_NEGATIVEZ = 0x8000
+    VOLUME = 0x200000
 
-DDSCAPS2_CUBEMAP = 0x200
-DDSCAPS2_CUBEMAP_POSITIVEX = 0x400
-DDSCAPS2_CUBEMAP_NEGATIVEX = 0x800
-DDSCAPS2_CUBEMAP_POSITIVEY = 0x1000
-DDSCAPS2_CUBEMAP_NEGATIVEY = 0x2000
-DDSCAPS2_CUBEMAP_POSITIVEZ = 0x4000
-DDSCAPS2_CUBEMAP_NEGATIVEZ = 0x8000
-DDSCAPS2_VOLUME = 0x200000
 
 # Pixel Format
-DDPF_ALPHAPIXELS = 0x1
+class DDPF(IntFlag):
-DDPF_ALPHA = 0x2
+    ALPHAPIXELS = 0x1
-DDPF_FOURCC = 0x4
+    ALPHA = 0x2
-DDPF_PALETTEINDEXED8 = 0x20
+    FOURCC = 0x4
-DDPF_RGB = 0x40
+    PALETTEINDEXED8 = 0x20
-DDPF_LUMINANCE = 0x20000
+    RGB = 0x40
-
+    LUMINANCE = 0x20000
-
-# dds.h
-
-DDS_FOURCC = DDPF_FOURCC
-DDS_RGB = DDPF_RGB
-DDS_RGBA = DDPF_RGB | DDPF_ALPHAPIXELS
-DDS_LUMINANCE = DDPF_LUMINANCE
-DDS_LUMINANCEA = DDPF_LUMINANCE | DDPF_ALPHAPIXELS
-DDS_ALPHA = DDPF_ALPHA
-DDS_PAL8 = DDPF_PALETTEINDEXED8
-
-DDS_HEADER_FLAGS_TEXTURE = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PIXELFORMAT
-DDS_HEADER_FLAGS_MIPMAP = DDSD_MIPMAPCOUNT
-DDS_HEADER_FLAGS_VOLUME = DDSD_DEPTH
-DDS_HEADER_FLAGS_PITCH = DDSD_PITCH
-DDS_HEADER_FLAGS_LINEARSIZE = DDSD_LINEARSIZE
-
-DDS_HEIGHT = DDSD_HEIGHT
-DDS_WIDTH = DDSD_WIDTH
-
-DDS_SURFACE_FLAGS_TEXTURE = DDSCAPS_TEXTURE
-DDS_SURFACE_FLAGS_MIPMAP = DDSCAPS_COMPLEX | DDSCAPS_MIPMAP
-DDS_SURFACE_FLAGS_CUBEMAP = DDSCAPS_COMPLEX
-
-DDS_CUBEMAP_POSITIVEX = DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_POSITIVEX
-DDS_CUBEMAP_NEGATIVEX = DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_NEGATIVEX
-DDS_CUBEMAP_POSITIVEY = DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_POSITIVEY
-DDS_CUBEMAP_NEGATIVEY = DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_NEGATIVEY
-DDS_CUBEMAP_POSITIVEZ = DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_POSITIVEZ
-DDS_CUBEMAP_NEGATIVEZ = DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_NEGATIVEZ
-
-
-# DXT1
-DXT1_FOURCC = 0x31545844
-
-# DXT3
-DXT3_FOURCC = 0x33545844
-
-# DXT5
-DXT5_FOURCC = 0x35545844
 
 
 # dxgiformat.h
+class DXGI_FORMAT(IntEnum):
+    UNKNOWN = 0
+    R32G32B32A32_TYPELESS = 1
+    R32G32B32A32_FLOAT = 2
+    R32G32B32A32_UINT = 3
+    R32G32B32A32_SINT = 4
+    R32G32B32_TYPELESS = 5
+    R32G32B32_FLOAT = 6
+    R32G32B32_UINT = 7
+    R32G32B32_SINT = 8
+    R16G16B16A16_TYPELESS = 9
+    R16G16B16A16_FLOAT = 10
+    R16G16B16A16_UNORM = 11
+    R16G16B16A16_UINT = 12
+    R16G16B16A16_SNORM = 13
+    R16G16B16A16_SINT = 14
+    R32G32_TYPELESS = 15
+    R32G32_FLOAT = 16
+    R32G32_UINT = 17
+    R32G32_SINT = 18
+    R32G8X24_TYPELESS = 19
+    D32_FLOAT_S8X24_UINT = 20
+    R32_FLOAT_X8X24_TYPELESS = 21
+    X32_TYPELESS_G8X24_UINT = 22
+    R10G10B10A2_TYPELESS = 23
+    R10G10B10A2_UNORM = 24
+    R10G10B10A2_UINT = 25
+    R11G11B10_FLOAT = 26
+    R8G8B8A8_TYPELESS = 27
+    R8G8B8A8_UNORM = 28
+    R8G8B8A8_UNORM_SRGB = 29
+    R8G8B8A8_UINT = 30
+    R8G8B8A8_SNORM = 31
+    R8G8B8A8_SINT = 32
+    R16G16_TYPELESS = 33
+    R16G16_FLOAT = 34
+    R16G16_UNORM = 35
+    R16G16_UINT = 36
+    R16G16_SNORM = 37
+    R16G16_SINT = 38
+    R32_TYPELESS = 39
+    D32_FLOAT = 40
+    R32_FLOAT = 41
+    R32_UINT = 42
+    R32_SINT = 43
+    R24G8_TYPELESS = 44
+    D24_UNORM_S8_UINT = 45
+    R24_UNORM_X8_TYPELESS = 46
+    X24_TYPELESS_G8_UINT = 47
+    R8G8_TYPELESS = 48
+    R8G8_UNORM = 49
+    R8G8_UINT = 50
+    R8G8_SNORM = 51
+    R8G8_SINT = 52
+    R16_TYPELESS = 53
+    R16_FLOAT = 54
+    D16_UNORM = 55
+    R16_UNORM = 56
+    R16_UINT = 57
+    R16_SNORM = 58
+    R16_SINT = 59
+    R8_TYPELESS = 60
+    R8_UNORM = 61
+    R8_UINT = 62
+    R8_SNORM = 63
+    R8_SINT = 64
+    A8_UNORM = 65
+    R1_UNORM = 66
+    R9G9B9E5_SHAREDEXP = 67
+    R8G8_B8G8_UNORM = 68
+    G8R8_G8B8_UNORM = 69
+    BC1_TYPELESS = 70
+    BC1_UNORM = 71
+    BC1_UNORM_SRGB = 72
+    BC2_TYPELESS = 73
+    BC2_UNORM = 74
+    BC2_UNORM_SRGB = 75
+    BC3_TYPELESS = 76
+    BC3_UNORM = 77
+    BC3_UNORM_SRGB = 78
+    BC4_TYPELESS = 79
+    BC4_UNORM = 80
+    BC4_SNORM = 81
+    BC5_TYPELESS = 82
+    BC5_UNORM = 83
+    BC5_SNORM = 84
+    B5G6R5_UNORM = 85
+    B5G5R5A1_UNORM = 86
+    B8G8R8A8_UNORM = 87
+    B8G8R8X8_UNORM = 88
+    R10G10B10_XR_BIAS_A2_UNORM = 89
+    B8G8R8A8_TYPELESS = 90
+    B8G8R8A8_UNORM_SRGB = 91
+    B8G8R8X8_TYPELESS = 92
+    B8G8R8X8_UNORM_SRGB = 93
+    BC6H_TYPELESS = 94
+    BC6H_UF16 = 95
+    BC6H_SF16 = 96
+    BC7_TYPELESS = 97
+    BC7_UNORM = 98
+    BC7_UNORM_SRGB = 99
+    AYUV = 100
+    Y410 = 101
+    Y416 = 102
+    NV12 = 103
+    P010 = 104
+    P016 = 105
+    OPAQUE_420 = 106
+    YUY2 = 107
+    Y210 = 108
+    Y216 = 109
+    NV11 = 110
+    AI44 = 111
+    IA44 = 112
+    P8 = 113
+    A8P8 = 114
+    B4G4R4A4_UNORM = 115
+    P208 = 130
+    V208 = 131
+    V408 = 132
+    SAMPLER_FEEDBACK_MIN_MIP_OPAQUE = 189
+    SAMPLER_FEEDBACK_MIP_REGION_USED_OPAQUE = 190
 
-DXGI_FORMAT_R8G8B8A8_TYPELESS = 27
+
-DXGI_FORMAT_R8G8B8A8_UNORM = 28
+class D3DFMT(IntEnum):
-DXGI_FORMAT_R8G8B8A8_UNORM_SRGB = 29
+    UNKNOWN = 0
-DXGI_FORMAT_BC5_TYPELESS = 82
+    R8G8B8 = 20
-DXGI_FORMAT_BC5_UNORM = 83
+    A8R8G8B8 = 21
-DXGI_FORMAT_BC5_SNORM = 84
+    X8R8G8B8 = 22
-DXGI_FORMAT_BC6H_UF16 = 95
+    R5G6B5 = 23
-DXGI_FORMAT_BC6H_SF16 = 96
+    X1R5G5B5 = 24
-DXGI_FORMAT_BC7_TYPELESS = 97
+    A1R5G5B5 = 25
-DXGI_FORMAT_BC7_UNORM = 98
+    A4R4G4B4 = 26
-DXGI_FORMAT_BC7_UNORM_SRGB = 99
+    R3G3B2 = 27
+    A8 = 28
+    A8R3G3B2 = 29
+    X4R4G4B4 = 30
+    A2B10G10R10 = 31
+    A8B8G8R8 = 32
+    X8B8G8R8 = 33
+    G16R16 = 34
+    A2R10G10B10 = 35
+    A16B16G16R16 = 36
+    A8P8 = 40
+    P8 = 41
+    L8 = 50
+    A8L8 = 51
+    A4L4 = 52
+    V8U8 = 60
+    L6V5U5 = 61
+    X8L8V8U8 = 62
+    Q8W8V8U8 = 63
+    V16U16 = 64
+    A2W10V10U10 = 67
+    D16_LOCKABLE = 70
+    D32 = 71
+    D15S1 = 73
+    D24S8 = 75
+    D24X8 = 77
+    D24X4S4 = 79
+    D16 = 80
+    D32F_LOCKABLE = 82
+    D24FS8 = 83
+    D32_LOCKABLE = 84
+    S8_LOCKABLE = 85
+    L16 = 81
+    VERTEXDATA = 100
+    INDEX16 = 101
+    INDEX32 = 102
+    Q16W16V16U16 = 110
+    R16F = 111
+    G16R16F = 112
+    A16B16G16R16F = 113
+    R32F = 114
+    G32R32F = 115
+    A32B32G32R32F = 116
+    CxV8U8 = 117
+    A1 = 118
+    A2B10G10R10_XR_BIAS = 119
+    BINARYBUFFER = 199
+
+    UYVY = i32(b"UYVY")
+    R8G8_B8G8 = i32(b"RGBG")
+    YUY2 = i32(b"YUY2")
+    G8R8_G8B8 = i32(b"GRGB")
+    DXT1 = i32(b"DXT1")
+    DXT2 = i32(b"DXT2")
+    DXT3 = i32(b"DXT3")
+    DXT4 = i32(b"DXT4")
+    DXT5 = i32(b"DXT5")
+    DX10 = i32(b"DX10")
+    BC4S = i32(b"BC4S")
+    BC4U = i32(b"BC4U")
+    BC5S = i32(b"BC5S")
+    BC5U = i32(b"BC5U")
+    ATI1 = i32(b"ATI1")
+    ATI2 = i32(b"ATI2")
+    MULTI2_ARGB8 = i32(b"MET1")
+
+
+# Backward compatibility layer
+module = sys.modules[__name__]
+for item in DDSD:
+    assert item.name is not None
+    setattr(module, f"DDSD_{item.name}", item.value)
+for item1 in DDSCAPS:
+    assert item1.name is not None
+    setattr(module, f"DDSCAPS_{item1.name}", item1.value)
+for item2 in DDSCAPS2:
+    assert item2.name is not None
+    setattr(module, f"DDSCAPS2_{item2.name}", item2.value)
+for item3 in DDPF:
+    assert item3.name is not None
+    setattr(module, f"DDPF_{item3.name}", item3.value)
+
+DDS_FOURCC = DDPF.FOURCC
+DDS_RGB = DDPF.RGB
+DDS_RGBA = DDPF.RGB | DDPF.ALPHAPIXELS
+DDS_LUMINANCE = DDPF.LUMINANCE
+DDS_LUMINANCEA = DDPF.LUMINANCE | DDPF.ALPHAPIXELS
+DDS_ALPHA = DDPF.ALPHA
+DDS_PAL8 = DDPF.PALETTEINDEXED8
+
+DDS_HEADER_FLAGS_TEXTURE = DDSD.CAPS | DDSD.HEIGHT | DDSD.WIDTH | DDSD.PIXELFORMAT
+DDS_HEADER_FLAGS_MIPMAP = DDSD.MIPMAPCOUNT
+DDS_HEADER_FLAGS_VOLUME = DDSD.DEPTH
+DDS_HEADER_FLAGS_PITCH = DDSD.PITCH
+DDS_HEADER_FLAGS_LINEARSIZE = DDSD.LINEARSIZE
+
+DDS_HEIGHT = DDSD.HEIGHT
+DDS_WIDTH = DDSD.WIDTH
+
+DDS_SURFACE_FLAGS_TEXTURE = DDSCAPS.TEXTURE
+DDS_SURFACE_FLAGS_MIPMAP = DDSCAPS.COMPLEX | DDSCAPS.MIPMAP
+DDS_SURFACE_FLAGS_CUBEMAP = DDSCAPS.COMPLEX
+
+DDS_CUBEMAP_POSITIVEX = DDSCAPS2.CUBEMAP | DDSCAPS2.CUBEMAP_POSITIVEX
+DDS_CUBEMAP_NEGATIVEX = DDSCAPS2.CUBEMAP | DDSCAPS2.CUBEMAP_NEGATIVEX
+DDS_CUBEMAP_POSITIVEY = DDSCAPS2.CUBEMAP | DDSCAPS2.CUBEMAP_POSITIVEY
+DDS_CUBEMAP_NEGATIVEY = DDSCAPS2.CUBEMAP | DDSCAPS2.CUBEMAP_NEGATIVEY
+DDS_CUBEMAP_POSITIVEZ = DDSCAPS2.CUBEMAP | DDSCAPS2.CUBEMAP_POSITIVEZ
+DDS_CUBEMAP_NEGATIVEZ = DDSCAPS2.CUBEMAP | DDSCAPS2.CUBEMAP_NEGATIVEZ
+
+DXT1_FOURCC = D3DFMT.DXT1
+DXT3_FOURCC = D3DFMT.DXT3
+DXT5_FOURCC = D3DFMT.DXT5
+
+DXGI_FORMAT_R8G8B8A8_TYPELESS = DXGI_FORMAT.R8G8B8A8_TYPELESS
+DXGI_FORMAT_R8G8B8A8_UNORM = DXGI_FORMAT.R8G8B8A8_UNORM
+DXGI_FORMAT_R8G8B8A8_UNORM_SRGB = DXGI_FORMAT.R8G8B8A8_UNORM_SRGB
+DXGI_FORMAT_BC5_TYPELESS = DXGI_FORMAT.BC5_TYPELESS
+DXGI_FORMAT_BC5_UNORM = DXGI_FORMAT.BC5_UNORM
+DXGI_FORMAT_BC5_SNORM = DXGI_FORMAT.BC5_SNORM
+DXGI_FORMAT_BC6H_UF16 = DXGI_FORMAT.BC6H_UF16
+DXGI_FORMAT_BC6H_SF16 = DXGI_FORMAT.BC6H_SF16
+DXGI_FORMAT_BC7_TYPELESS = DXGI_FORMAT.BC7_TYPELESS
+DXGI_FORMAT_BC7_UNORM = DXGI_FORMAT.BC7_UNORM
+DXGI_FORMAT_BC7_UNORM_SRGB = DXGI_FORMAT.BC7_UNORM_SRGB
 
 
 class DdsImageFile(ImageFile.ImageFile):
     format = "DDS"
     format_description = "DirectDraw Surface"
 
-    def _open(self):
+    def _open(self) -> None:
         if not _accept(self.fp.read(4)):
             msg = "not a DDS file"
             raise SyntaxError(msg)
@@ -124,172 +344,281 @@ class DdsImageFile(ImageFile.ImageFile):
         if len(header_bytes) != 120:
             msg = f"Incomplete header: {len(header_bytes)} bytes"
             raise OSError(msg)
-        header = BytesIO(header_bytes)
+        header = io.BytesIO(header_bytes)
 
         flags, height, width = struct.unpack("<3I", header.read(12))
         self._size = (width, height)
-        self._mode = "RGBA"
+        extents = (0, 0) + self.size
 
         pitch, depth, mipmaps = struct.unpack("<3I", header.read(12))
         struct.unpack("<11I", header.read(44))  # reserved
 
         # pixel format
-        pfsize, pfflags = struct.unpack("<2I", header.read(8))
+        pfsize, pfflags, fourcc, bitcount = struct.unpack("<4I", header.read(16))
-        fourcc = header.read(4)
+        n = 0
-        (bitcount,) = struct.unpack("<I", header.read(4))
+        rawmode = None
-        masks = struct.unpack("<4I", header.read(16))
+        if pfflags & DDPF.RGB:
-        if pfflags & DDPF_LUMINANCE:
+            # Texture contains uncompressed RGB data
-            # Texture contains uncompressed L or LA data
+            if pfflags & DDPF.ALPHAPIXELS:
-            if pfflags & DDPF_ALPHAPIXELS:
+                self._mode = "RGBA"
+                mask_count = 4
+            else:
+                self._mode = "RGB"
+                mask_count = 3
+
+            masks = struct.unpack(f"<{mask_count}I", header.read(mask_count * 4))
+            self.tile = [ImageFile._Tile("dds_rgb", extents, 0, (bitcount, masks))]
+            return
+        elif pfflags & DDPF.LUMINANCE:
+            if bitcount == 8:
+                self._mode = "L"
+            elif bitcount == 16 and pfflags & DDPF.ALPHAPIXELS:
                 self._mode = "LA"
             else:
-                self._mode = "L"
+                msg = f"Unsupported bitcount {bitcount} for {pfflags}"
-
+                raise OSError(msg)
-            self.tile = [("raw", (0, 0) + self.size, 0, (self.mode, 0, 1))]
+        elif pfflags & DDPF.PALETTEINDEXED8:
-        elif pfflags & DDPF_RGB:
-            # Texture contains uncompressed RGB data
-            masks = {mask: ["R", "G", "B", "A"][i] for i, mask in enumerate(masks)}
-            rawmode = ""
-            if pfflags & DDPF_ALPHAPIXELS:
-                rawmode += masks[0xFF000000]
-            else:
-                self._mode = "RGB"
-            rawmode += masks[0xFF0000] + masks[0xFF00] + masks[0xFF]
-
-            self.tile = [("raw", (0, 0) + self.size, 0, (rawmode[::-1], 0, 1))]
-        elif pfflags & DDPF_PALETTEINDEXED8:
             self._mode = "P"
             self.palette = ImagePalette.raw("RGBA", self.fp.read(1024))
-            self.tile = [("raw", (0, 0) + self.size, 0, "L")]
+            self.palette.mode = "RGBA"
-        else:
+        elif pfflags & DDPF.FOURCC:
-            data_start = header_size + 4
+            offset = header_size + 4
-            n = 0
+            if fourcc == D3DFMT.DXT1:
-            if fourcc == b"DXT1":
+                self._mode = "RGBA"
                 self.pixel_format = "DXT1"
                 n = 1
-            elif fourcc == b"DXT3":
+            elif fourcc == D3DFMT.DXT3:
+                self._mode = "RGBA"
                 self.pixel_format = "DXT3"
                 n = 2
-            elif fourcc == b"DXT5":
+            elif fourcc == D3DFMT.DXT5:
+                self._mode = "RGBA"
                 self.pixel_format = "DXT5"
                 n = 3
-            elif fourcc == b"ATI1":
+            elif fourcc in (D3DFMT.BC4U, D3DFMT.ATI1):
+                self._mode = "L"
                 self.pixel_format = "BC4"
                 n = 4
-                self._mode = "L"
+            elif fourcc == D3DFMT.BC5S:
-            elif fourcc in (b"ATI2", b"BC5U"):
-                self.pixel_format = "BC5"
-                n = 5
                 self._mode = "RGB"
-            elif fourcc == b"BC5S":
                 self.pixel_format = "BC5S"
                 n = 5
+            elif fourcc in (D3DFMT.BC5U, D3DFMT.ATI2):
                 self._mode = "RGB"
-            elif fourcc == b"DX10":
+                self.pixel_format = "BC5"
-                data_start += 20
+                n = 5
+            elif fourcc == D3DFMT.DX10:
+                offset += 20
                 # ignoring flags which pertain to volume textures and cubemaps
                 (dxgi_format,) = struct.unpack("<I", self.fp.read(4))
                 self.fp.read(16)
-                if dxgi_format in (DXGI_FORMAT_BC5_TYPELESS, DXGI_FORMAT_BC5_UNORM):
+                if dxgi_format in (
+                    DXGI_FORMAT.BC1_UNORM,
+                    DXGI_FORMAT.BC1_TYPELESS,
+                ):
+                    self._mode = "RGBA"
+                    self.pixel_format = "BC1"
+                    n = 1
+                elif dxgi_format in (DXGI_FORMAT.BC2_TYPELESS, DXGI_FORMAT.BC2_UNORM):
+                    self._mode = "RGBA"
+                    self.pixel_format = "BC2"
+                    n = 2
+                elif dxgi_format in (DXGI_FORMAT.BC3_TYPELESS, DXGI_FORMAT.BC3_UNORM):
+                    self._mode = "RGBA"
+                    self.pixel_format = "BC3"
+                    n = 3
+                elif dxgi_format in (DXGI_FORMAT.BC4_TYPELESS, DXGI_FORMAT.BC4_UNORM):
+                    self._mode = "L"
+                    self.pixel_format = "BC4"
+                    n = 4
+                elif dxgi_format in (DXGI_FORMAT.BC5_TYPELESS, DXGI_FORMAT.BC5_UNORM):
+                    self._mode = "RGB"
                     self.pixel_format = "BC5"
                     n = 5
+                elif dxgi_format == DXGI_FORMAT.BC5_SNORM:
                     self._mode = "RGB"
-                elif dxgi_format == DXGI_FORMAT_BC5_SNORM:
                     self.pixel_format = "BC5S"
                     n = 5
+                elif dxgi_format == DXGI_FORMAT.BC6H_UF16:
                     self._mode = "RGB"
-                elif dxgi_format == DXGI_FORMAT_BC6H_UF16:
                     self.pixel_format = "BC6H"
                     n = 6
+                elif dxgi_format == DXGI_FORMAT.BC6H_SF16:
                     self._mode = "RGB"
-                elif dxgi_format == DXGI_FORMAT_BC6H_SF16:
                     self.pixel_format = "BC6HS"
                     n = 6
-                    self._mode = "RGB"
-                elif dxgi_format in (DXGI_FORMAT_BC7_TYPELESS, DXGI_FORMAT_BC7_UNORM):
-                    self.pixel_format = "BC7"
-                    n = 7
-                elif dxgi_format == DXGI_FORMAT_BC7_UNORM_SRGB:
-                    self.pixel_format = "BC7"
-                    self.info["gamma"] = 1 / 2.2
-                    n = 7
                 elif dxgi_format in (
-                    DXGI_FORMAT_R8G8B8A8_TYPELESS,
+                    DXGI_FORMAT.BC7_TYPELESS,
-                    DXGI_FORMAT_R8G8B8A8_UNORM,
+                    DXGI_FORMAT.BC7_UNORM,
-                    DXGI_FORMAT_R8G8B8A8_UNORM_SRGB,
+                    DXGI_FORMAT.BC7_UNORM_SRGB,
                 ):
-                    self.tile = [("raw", (0, 0) + self.size, 0, ("RGBA", 0, 1))]
+                    self._mode = "RGBA"
-                    if dxgi_format == DXGI_FORMAT_R8G8B8A8_UNORM_SRGB:
+                    self.pixel_format = "BC7"
+                    n = 7
+                    if dxgi_format == DXGI_FORMAT.BC7_UNORM_SRGB:
+                        self.info["gamma"] = 1 / 2.2
+                elif dxgi_format in (
+                    DXGI_FORMAT.R8G8B8A8_TYPELESS,
+                    DXGI_FORMAT.R8G8B8A8_UNORM,
+                    DXGI_FORMAT.R8G8B8A8_UNORM_SRGB,
+                ):
+                    self._mode = "RGBA"
+                    if dxgi_format == DXGI_FORMAT.R8G8B8A8_UNORM_SRGB:
                         self.info["gamma"] = 1 / 2.2
-                    return
                 else:
                     msg = f"Unimplemented DXGI format {dxgi_format}"
                     raise NotImplementedError(msg)
             else:
                 msg = f"Unimplemented pixel format {repr(fourcc)}"
                 raise NotImplementedError(msg)
+        else:
+            msg = f"Unknown pixel format flags {pfflags}"
+            raise NotImplementedError(msg)
 
+        if n:
             self.tile = [
-                ("bcn", (0, 0) + self.size, data_start, (n, self.pixel_format))
+                ImageFile._Tile("bcn", extents, offset, (n, self.pixel_format))
             ]
+        else:
+            self.tile = [ImageFile._Tile("raw", extents, 0, rawmode or self.mode)]
 
-    def load_seek(self, pos):
+    def load_seek(self, pos: int) -> None:
         pass
 
 
-def _save(im, fp, filename):
+class DdsRgbDecoder(ImageFile.PyDecoder):
+    _pulls_fd = True
+
+    def decode(self, buffer: bytes | Image.SupportsArrayInterface) -> tuple[int, int]:
+        assert self.fd is not None
+        bitcount, masks = self.args
+
+        # Some masks will be padded with zeros, e.g. R 0b11 G 0b1100
+        # Calculate how many zeros each mask is padded with
+        mask_offsets = []
+        # And the maximum value of each channel without the padding
+        mask_totals = []
+        for mask in masks:
+            offset = 0
+            if mask != 0:
+                while mask >> (offset + 1) << (offset + 1) == mask:
+                    offset += 1
+            mask_offsets.append(offset)
+            mask_totals.append(mask >> offset)
+
+        data = bytearray()
+        bytecount = bitcount // 8
+        dest_length = self.state.xsize * self.state.ysize * len(masks)
+        while len(data) < dest_length:
+            value = int.from_bytes(self.fd.read(bytecount), "little")
+            for i, mask in enumerate(masks):
+                masked_value = value & mask
+                # Remove the zero padding, and scale it to 8 bits
+                data += o8(
+                    int(((masked_value >> mask_offsets[i]) / mask_totals[i]) * 255)
+                )
+        self.set_as_raw(data)
+        return -1, 0
+
+
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     if im.mode not in ("RGB", "RGBA", "L", "LA"):
         msg = f"cannot write mode {im.mode} as DDS"
         raise OSError(msg)
 
-    rawmode = im.mode
+    flags = DDSD.CAPS | DDSD.HEIGHT | DDSD.WIDTH | DDSD.PIXELFORMAT
-    masks = [0xFF0000, 0xFF00, 0xFF]
+    bitcount = len(im.getbands()) * 8
-    if im.mode in ("L", "LA"):
+    pixel_format = im.encoderinfo.get("pixel_format")
-        pixel_flags = DDPF_LUMINANCE
+    args: tuple[int] | str
+    if pixel_format:
+        codec_name = "bcn"
+        flags |= DDSD.LINEARSIZE
+        pitch = (im.width + 3) * 4
+        rgba_mask = [0, 0, 0, 0]
+        pixel_flags = DDPF.FOURCC
+        if pixel_format == "DXT1":
+            fourcc = D3DFMT.DXT1
+            args = (1,)
+        elif pixel_format == "DXT3":
+            fourcc = D3DFMT.DXT3
+            args = (2,)
+        elif pixel_format == "DXT5":
+            fourcc = D3DFMT.DXT5
+            args = (3,)
+        else:
+            fourcc = D3DFMT.DX10
+            if pixel_format == "BC2":
+                args = (2,)
+                dxgi_format = DXGI_FORMAT.BC2_TYPELESS
+            elif pixel_format == "BC3":
+                args = (3,)
+                dxgi_format = DXGI_FORMAT.BC3_TYPELESS
+            elif pixel_format == "BC5":
+                args = (5,)
+                dxgi_format = DXGI_FORMAT.BC5_TYPELESS
+                if im.mode != "RGB":
+                    msg = "only RGB mode can be written as BC5"
+                    raise OSError(msg)
+            else:
+                msg = f"cannot write pixel format {pixel_format}"
+                raise OSError(msg)
     else:
-        pixel_flags = DDPF_RGB
+        codec_name = "raw"
-        rawmode = rawmode[::-1]
+        flags |= DDSD.PITCH
-    if im.mode in ("LA", "RGBA"):
+        pitch = (im.width * bitcount + 7) // 8
-        pixel_flags |= DDPF_ALPHAPIXELS
-        masks.append(0xFF000000)
 
-    bitcount = len(masks) * 8
+        alpha = im.mode[-1] == "A"
-    while len(masks) < 4:
+        if im.mode[0] == "L":
-        masks.append(0)
+            pixel_flags = DDPF.LUMINANCE
+            args = im.mode
+            if alpha:
+                rgba_mask = [0x000000FF, 0x000000FF, 0x000000FF]
+            else:
+                rgba_mask = [0xFF000000, 0xFF000000, 0xFF000000]
+        else:
+            pixel_flags = DDPF.RGB
+            args = im.mode[::-1]
+            rgba_mask = [0x00FF0000, 0x0000FF00, 0x000000FF]
 
+            if alpha:
+                r, g, b, a = im.split()
+                im = Image.merge("RGBA", (a, r, g, b))
+        if alpha:
+            pixel_flags |= DDPF.ALPHAPIXELS
+        rgba_mask.append(0xFF000000 if alpha else 0)
+
+        fourcc = D3DFMT.UNKNOWN
     fp.write(
         o32(DDS_MAGIC)
-        + o32(124)  # header size
+        + struct.pack(
-        + o32(
+            "<7I",
-            DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PITCH | DDSD_PIXELFORMAT
+            124,  # header size
-        )  # flags
+            flags,  # flags
-        + o32(im.height)
+            im.height,
-        + o32(im.width)
+            im.width,
-        + o32((im.width * bitcount + 7) // 8)  # pitch
+            pitch,
-        + o32(0)  # depth
+            0,  # depth
-        + o32(0)  # mipmaps
+            0,  # mipmaps
-        + o32(0) * 11  # reserved
+        )
-        + o32(32)  # pfsize
+        + struct.pack("11I", *((0,) * 11))  # reserved
-        + o32(pixel_flags)  # pfflags
+        # pfsize, pfflags, fourcc, bitcount
-        + o32(0)  # fourcc
+        + struct.pack("<4I", 32, pixel_flags, fourcc, bitcount)
-        + o32(bitcount)  # bitcount
+        + struct.pack("<4I", *rgba_mask)  # dwRGBABitMask
-        + b"".join(o32(mask) for mask in masks)  # rgbabitmask
+        + struct.pack("<5I", DDSCAPS.TEXTURE, 0, 0, 0, 0)
-        + o32(DDSCAPS_TEXTURE)  # dwCaps
-        + o32(0)  # dwCaps2
-        + o32(0)  # dwCaps3
-        + o32(0)  # dwCaps4
-        + o32(0)  # dwReserved2
     )
-    if im.mode == "RGBA":
+    if fourcc == D3DFMT.DX10:
-        r, g, b, a = im.split()
+        fp.write(
-        im = Image.merge("RGBA", (a, r, g, b))
+            # dxgi_format, 2D resource, misc, array size, straight alpha
-    ImageFile._save(im, fp, [("raw", (0, 0) + im.size, 0, (rawmode, 0, 1))])
+            struct.pack("<5I", dxgi_format, 3, 0, 0, 1)
+        )
+    ImageFile._save(im, fp, [ImageFile._Tile(codec_name, (0, 0) + im.size, 0, args)])
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
-    return prefix[:4] == b"DDS "
+    return prefix.startswith(b"DDS ")
 
 
 Image.register_open(DdsImageFile.format, DdsImageFile, _accept)
+Image.register_decoder("dds_rgb", DdsRgbDecoder)
 Image.register_save(DdsImageFile.format, _save)
 Image.register_extension(DdsImageFile.format, ".dds")

Backend/venv/lib/python3.12/site-packages/PIL/EpsImagePlugin.py

@@ -19,6 +19,7 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import io
 import os
@@ -26,10 +27,10 @@ import re
 import subprocess
 import sys
 import tempfile
+from typing import IO
 
 from . import Image, ImageFile
 from ._binary import i32le as i32
-from ._deprecate import deprecate
 
 # --------------------------------------------------------------------
 
@@ -37,11 +38,11 @@ from ._deprecate import deprecate
 split = re.compile(r"^%%([^:]*):[ \t]*(.*)[ \t]*$")
 field = re.compile(r"^%[%!\w]([^:]*)[ \t]*$")
 
-gs_binary = None
+gs_binary: str | bool | None = None
 gs_windows_binary = None
 
 
-def has_ghostscript():
+def has_ghostscript() -> bool:
     global gs_binary, gs_windows_binary
     if gs_binary is None:
         if sys.platform.startswith("win"):
@@ -64,27 +65,32 @@ def has_ghostscript():
     return gs_binary is not False
 
 
-def Ghostscript(tile, size, fp, scale=1, transparency=False):
+def Ghostscript(
+    tile: list[ImageFile._Tile],
+    size: tuple[int, int],
+    fp: IO[bytes],
+    scale: int = 1,
+    transparency: bool = False,
+) -> Image.core.ImagingCore:
     """Render an image using Ghostscript"""
     global gs_binary
     if not has_ghostscript():
         msg = "Unable to locate Ghostscript on paths"
         raise OSError(msg)
+    assert isinstance(gs_binary, str)
 
     # Unpack decoder tile
-    decoder, tile, offset, data = tile[0]
+    args = tile[0].args
-    length, bbox = data
+    assert isinstance(args, tuple)
+    length, bbox = args
 
     # Hack to support hi-res rendering
     scale = int(scale) or 1
-    # orig_size = size
+    width = size[0] * scale
-    # orig_bbox = bbox
+    height = size[1] * scale
-    size = (size[0] * scale, size[1] * scale)
     # resolution is dependent on bbox and size
-    res = (
+    res_x = 72.0 * width / (bbox[2] - bbox[0])
-        72.0 * size[0] / (bbox[2] - bbox[0]),
+    res_y = 72.0 * height / (bbox[3] - bbox[1])
-        72.0 * size[1] / (bbox[3] - bbox[1]),
-    )
 
     out_fd, outfile = tempfile.mkstemp()
     os.close(out_fd)
@@ -115,14 +121,20 @@ def Ghostscript(tile, size, fp, scale=1, transparency=False):
                 lengthfile -= len(s)
                 f.write(s)
 
-    device = "pngalpha" if transparency else "ppmraw"
+    if transparency:
+        # "RGBA"
+        device = "pngalpha"
+    else:
+        # "pnmraw" automatically chooses between
+        # PBM ("1"), PGM ("L"), and PPM ("RGB").
+        device = "pnmraw"
 
     # Build Ghostscript command
     command = [
         gs_binary,
         "-q",  # quiet mode
-        "-g%dx%d" % size,  # set output geometry (pixels)
+        f"-g{width:d}x{height:d}",  # set output geometry (pixels)
-        "-r%fx%f" % res,  # set input DPI (dots per inch)
+        f"-r{res_x:f}x{res_y:f}",  # set input DPI (dots per inch)
         "-dBATCH",  # exit after processing
         "-dNOPAUSE",  # don't pause between pages
         "-dSAFER",  # safe mode
@@ -145,8 +157,9 @@ def Ghostscript(tile, size, fp, scale=1, transparency=False):
             startupinfo = subprocess.STARTUPINFO()
             startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
         subprocess.check_call(command, startupinfo=startupinfo)
-        out_im = Image.open(outfile)
+        with Image.open(outfile) as out_im:
-        out_im.load()
+            out_im.load()
+            return out_im.im.copy()
     finally:
         try:
             os.unlink(outfile)
@@ -155,50 +168,11 @@ def Ghostscript(tile, size, fp, scale=1, transparency=False):
         except OSError:
             pass
 
-    im = out_im.im.copy()
-    out_im.close()
-    return im
 
-
+def _accept(prefix: bytes) -> bool:
-class PSFile:
+    return prefix.startswith(b"%!PS") or (
-    """
+        len(prefix) >= 4 and i32(prefix) == 0xC6D3D0C5
-    Wrapper for bytesio object that treats either CR or LF as end of line.
+    )
-    This class is no longer used internally, but kept for backwards compatibility.
-    """
-
-    def __init__(self, fp):
-        deprecate(
-            "PSFile",
-            11,
-            action="If you need the functionality of this class "
-            "you will need to implement it yourself.",
-        )
-        self.fp = fp
-        self.char = None
-
-    def seek(self, offset, whence=io.SEEK_SET):
-        self.char = None
-        self.fp.seek(offset, whence)
-
-    def readline(self):
-        s = [self.char or b""]
-        self.char = None
-
-        c = self.fp.read(1)
-        while (c not in b"\r\n") and len(c):
-            s.append(c)
-            c = self.fp.read(1)
-
-        self.char = self.fp.read(1)
-        # line endings can be 1 or 2 of \r \n, in either order
-        if self.char in b"\r\n":
-            self.char = None
-
-        return b"".join(s).decode("latin-1")
-
-
-def _accept(prefix):
-    return prefix[:4] == b"%!PS" or (len(prefix) >= 4 and i32(prefix) == 0xC6D3D0C5)
 
 
 ##
@@ -214,14 +188,18 @@ class EpsImageFile(ImageFile.ImageFile):
 
     mode_map = {1: "L", 2: "LAB", 3: "RGB", 4: "CMYK"}
 
-    def _open(self):
+    def _open(self) -> None:
         (length, offset) = self._find_offset(self.fp)
 
         # go to offset - start of "%!PS"
         self.fp.seek(offset)
 
         self._mode = "RGB"
-        self._size = None
+
+        # When reading header comments, the first comment is used.
+        # When reading trailer comments, the last comment is used.
+        bounding_box: list[int] | None = None
+        imagedata_size: tuple[int, int] | None = None
 
         byte_arr = bytearray(255)
         bytes_mv = memoryview(byte_arr)
@@ -230,7 +208,12 @@ class EpsImageFile(ImageFile.ImageFile):
         reading_trailer_comments = False
         trailer_reached = False
 
-        def check_required_header_comments():
+        def check_required_header_comments() -> None:
+            """
+            The EPS specification requires that some headers exist.
+            This should be checked when the header comments formally end,
+            when image data starts, or when the file ends, whichever comes first.
+            """
             if "PS-Adobe" not in self.info:
                 msg = 'EPS header missing "%!PS-Adobe" comment'
                 raise SyntaxError(msg)
@@ -238,41 +221,39 @@ class EpsImageFile(ImageFile.ImageFile):
                 msg = 'EPS header missing "%%BoundingBox" comment'
                 raise SyntaxError(msg)
 
-        def _read_comment(s):
+        def read_comment(s: str) -> bool:
-            nonlocal reading_trailer_comments
+            nonlocal bounding_box, reading_trailer_comments
             try:
                 m = split.match(s)
             except re.error as e:
                 msg = "not an EPS file"
                 raise SyntaxError(msg) from e
 
-            if m:
+            if not m:
-                k, v = m.group(1, 2)
+                return False
-                self.info[k] = v
+
-                if k == "BoundingBox":
+            k, v = m.group(1, 2)
-                    if v == "(atend)":
+            self.info[k] = v
-                        reading_trailer_comments = True
+            if k == "BoundingBox":
-                    elif not self._size or (
+                if v == "(atend)":
-                        trailer_reached and reading_trailer_comments
+                    reading_trailer_comments = True
-                    ):
+                elif not bounding_box or (trailer_reached and reading_trailer_comments):
-                        try:
+                    try:
-                            # Note: The DSC spec says that BoundingBox
+                        # Note: The DSC spec says that BoundingBox
-                            # fields should be integers, but some drivers
+                        # fields should be integers, but some drivers
-                            # put floating point values there anyway.
+                        # put floating point values there anyway.
-                            box = [int(float(i)) for i in v.split()]
+                        bounding_box = [int(float(i)) for i in v.split()]
-                            self._size = box[2] - box[0], box[3] - box[1]
+                    except Exception:
-                            self.tile = [
+                        pass
-                                ("eps", (0, 0) + self.size, offset, (length, box))
+            return True
-                            ]
-                        except Exception:
-                            pass
-                return True
 
         while True:
             byte = self.fp.read(1)
             if byte == b"":
                 # if we didn't read a byte we must be at the end of the file
                 if bytes_read == 0:
+                    if reading_header_comments:
+                        check_required_header_comments()
                     break
             elif byte in b"\r\n":
                 # if we read a line ending character, ignore it and parse what
@@ -312,11 +293,11 @@ class EpsImageFile(ImageFile.ImageFile):
                     continue
 
                 s = str(bytes_mv[:bytes_read], "latin-1")
-                if not _read_comment(s):
+                if not read_comment(s):
                     m = field.match(s)
                     if m:
                         k = m.group(1)
-                        if k[:8] == "PS-Adobe":
+                        if k.startswith("PS-Adobe"):
                             self.info["PS-Adobe"] = k[9:]
                         else:
                             self.info[k] = ""
@@ -331,6 +312,12 @@ class EpsImageFile(ImageFile.ImageFile):
                 # Check for an "ImageData" descriptor
                 # https://www.adobe.com/devnet-apps/photoshop/fileformatashtml/#50577413_pgfId-1035096
 
+                # If we've already read an "ImageData" descriptor,
+                # don't read another one.
+                if imagedata_size:
+                    bytes_read = 0
+                    continue
+
                 # Values:
                 # columns
                 # rows
@@ -356,29 +343,39 @@ class EpsImageFile(ImageFile.ImageFile):
                 else:
                     break
 
-                self._size = columns, rows
+                # Parse the columns and rows after checking the bit depth and mode
-                return
+                # in case the bit depth and/or mode are invalid.
+                imagedata_size = columns, rows
+            elif bytes_mv[:5] == b"%%EOF":
+                break
             elif trailer_reached and reading_trailer_comments:
                 # Load EPS trailer
-
-                # if this line starts with "%%EOF",
-                # then we've reached the end of the file
-                if bytes_mv[:5] == b"%%EOF":
-                    break
-
                 s = str(bytes_mv[:bytes_read], "latin-1")
-                _read_comment(s)
+                read_comment(s)
             elif bytes_mv[:9] == b"%%Trailer":
                 trailer_reached = True
+            elif bytes_mv[:14] == b"%%BeginBinary:":
+                bytecount = int(byte_arr[14:bytes_read])
+                self.fp.seek(bytecount, os.SEEK_CUR)
             bytes_read = 0
 
-        check_required_header_comments()
+        # A "BoundingBox" is always required,
-
+        # even if an "ImageData" descriptor size exists.
-        if not self._size:
+        if not bounding_box:
             msg = "cannot determine EPS bounding box"
             raise OSError(msg)
 
-    def _find_offset(self, fp):
+        # An "ImageData" size takes precedence over the "BoundingBox".
+        self._size = imagedata_size or (
+            bounding_box[2] - bounding_box[0],
+            bounding_box[3] - bounding_box[1],
+        )
+
+        self.tile = [
+            ImageFile._Tile("eps", (0, 0) + self.size, offset, (length, bounding_box))
+        ]
+
+    def _find_offset(self, fp: IO[bytes]) -> tuple[int, int]:
         s = fp.read(4)
 
         if s == b"%!PS":
@@ -401,7 +398,9 @@ class EpsImageFile(ImageFile.ImageFile):
 
         return length, offset
 
-    def load(self, scale=1, transparency=False):
+    def load(
+        self, scale: int = 1, transparency: bool = False
+    ) -> Image.core.PixelAccess | None:
         # Load EPS via Ghostscript
         if self.tile:
             self.im = Ghostscript(self.tile, self.size, self.fp, scale, transparency)
@@ -410,7 +409,7 @@ class EpsImageFile(ImageFile.ImageFile):
             self.tile = []
         return Image.Image.load(self)
 
-    def load_seek(self, *args, **kwargs):
+    def load_seek(self, pos: int) -> None:
         # we can't incrementally load, so force ImageFile.parser to
         # use our custom load method by defining this method.
         pass
@@ -419,7 +418,7 @@ class EpsImageFile(ImageFile.ImageFile):
 # --------------------------------------------------------------------
 
 
-def _save(im, fp, filename, eps=1):
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes, eps: int = 1) -> None:
     """EPS Writer for the Python Imaging Library."""
 
     # make sure image data is available
@@ -460,7 +459,7 @@ def _save(im, fp, filename, eps=1):
     if hasattr(fp, "flush"):
         fp.flush()
 
-    ImageFile._save(im, fp, [("eps", (0, 0) + im.size, 0, None)])
+    ImageFile._save(im, fp, [ImageFile._Tile("eps", (0, 0) + im.size)])
 
     fp.write(b"\n%%%%EndBinary\n")
     fp.write(b"grestore end\n")

Backend/venv/lib/python3.12/site-packages/PIL/ExifTags.py

@@ -13,6 +13,7 @@
 This module provides constants and clear-text names for various
 well-known EXIF tags.
 """
+from __future__ import annotations
 
 from enum import IntEnum
 
@@ -302,38 +303,38 @@ TAGS = {
 
 
 class GPS(IntEnum):
-    GPSVersionID = 0
+    GPSVersionID = 0x00
-    GPSLatitudeRef = 1
+    GPSLatitudeRef = 0x01
-    GPSLatitude = 2
+    GPSLatitude = 0x02
-    GPSLongitudeRef = 3
+    GPSLongitudeRef = 0x03
-    GPSLongitude = 4
+    GPSLongitude = 0x04
-    GPSAltitudeRef = 5
+    GPSAltitudeRef = 0x05
-    GPSAltitude = 6
+    GPSAltitude = 0x06
-    GPSTimeStamp = 7
+    GPSTimeStamp = 0x07
-    GPSSatellites = 8
+    GPSSatellites = 0x08
-    GPSStatus = 9
+    GPSStatus = 0x09
-    GPSMeasureMode = 10
+    GPSMeasureMode = 0x0A
-    GPSDOP = 11
+    GPSDOP = 0x0B
-    GPSSpeedRef = 12
+    GPSSpeedRef = 0x0C
-    GPSSpeed = 13
+    GPSSpeed = 0x0D
-    GPSTrackRef = 14
+    GPSTrackRef = 0x0E
-    GPSTrack = 15
+    GPSTrack = 0x0F
-    GPSImgDirectionRef = 16
+    GPSImgDirectionRef = 0x10
-    GPSImgDirection = 17
+    GPSImgDirection = 0x11
-    GPSMapDatum = 18
+    GPSMapDatum = 0x12
-    GPSDestLatitudeRef = 19
+    GPSDestLatitudeRef = 0x13
-    GPSDestLatitude = 20
+    GPSDestLatitude = 0x14
-    GPSDestLongitudeRef = 21
+    GPSDestLongitudeRef = 0x15
-    GPSDestLongitude = 22
+    GPSDestLongitude = 0x16
-    GPSDestBearingRef = 23
+    GPSDestBearingRef = 0x17
-    GPSDestBearing = 24
+    GPSDestBearing = 0x18
-    GPSDestDistanceRef = 25
+    GPSDestDistanceRef = 0x19
-    GPSDestDistance = 26
+    GPSDestDistance = 0x1A
-    GPSProcessingMethod = 27
+    GPSProcessingMethod = 0x1B
-    GPSAreaInformation = 28
+    GPSAreaInformation = 0x1C
-    GPSDateStamp = 29
+    GPSDateStamp = 0x1D
-    GPSDifferential = 30
+    GPSDifferential = 0x1E
-    GPSHPositioningError = 31
+    GPSHPositioningError = 0x1F
 
 
 """Maps EXIF GPS tags to tag names."""
@@ -341,40 +342,41 @@ GPSTAGS = {i.value: i.name for i in GPS}
 
 
 class Interop(IntEnum):
-    InteropIndex = 1
+    InteropIndex = 0x0001
-    InteropVersion = 2
+    InteropVersion = 0x0002
-    RelatedImageFileFormat = 4096
+    RelatedImageFileFormat = 0x1000
-    RelatedImageWidth = 4097
+    RelatedImageWidth = 0x1001
-    RleatedImageHeight = 4098
+    RelatedImageHeight = 0x1002
 
 
 class IFD(IntEnum):
-    Exif = 34665
+    Exif = 0x8769
-    GPSInfo = 34853
+    GPSInfo = 0x8825
-    Makernote = 37500
+    MakerNote = 0x927C
-    Interop = 40965
+    Makernote = 0x927C  # Deprecated
+    Interop = 0xA005
     IFD1 = -1
 
 
 class LightSource(IntEnum):
-    Unknown = 0
+    Unknown = 0x00
-    Daylight = 1
+    Daylight = 0x01
-    Fluorescent = 2
+    Fluorescent = 0x02
-    Tungsten = 3
+    Tungsten = 0x03
-    Flash = 4
+    Flash = 0x04
-    Fine = 9
+    Fine = 0x09
-    Cloudy = 10
+    Cloudy = 0x0A
-    Shade = 11
+    Shade = 0x0B
-    DaylightFluorescent = 12
+    DaylightFluorescent = 0x0C
-    DayWhiteFluorescent = 13
+    DayWhiteFluorescent = 0x0D
-    CoolWhiteFluorescent = 14
+    CoolWhiteFluorescent = 0x0E
-    WhiteFluorescent = 15
+    WhiteFluorescent = 0x0F
-    StandardLightA = 17
+    StandardLightA = 0x11
-    StandardLightB = 18
+    StandardLightB = 0x12
-    StandardLightC = 19
+    StandardLightC = 0x13
-    D55 = 20
+    D55 = 0x14
-    D65 = 21
+    D65 = 0x15
-    D75 = 22
+    D75 = 0x16
-    D50 = 23
+    D50 = 0x17
-    ISO = 24
+    ISO = 0x18
-    Other = 255
+    Other = 0xFF

Backend/venv/lib/python3.12/site-packages/PIL/FitsImagePlugin.py

@@ -8,30 +8,52 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
+import gzip
 import math
 
 from . import Image, ImageFile
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
-    return prefix[:6] == b"SIMPLE"
+    return prefix.startswith(b"SIMPLE")
 
 
 class FitsImageFile(ImageFile.ImageFile):
     format = "FITS"
     format_description = "FITS"
 
-    def _open(self):
+    def _open(self) -> None:
-        headers = {}
+        assert self.fp is not None
+
+        headers: dict[bytes, bytes] = {}
+        header_in_progress = False
+        decoder_name = ""
         while True:
             header = self.fp.read(80)
             if not header:
                 msg = "Truncated FITS file"
                 raise OSError(msg)
             keyword = header[:8].strip()
-            if keyword == b"END":
+            if keyword in (b"SIMPLE", b"XTENSION"):
+                header_in_progress = True
+            elif headers and not header_in_progress:
+                # This is now a data unit
                 break
+            elif keyword == b"END":
+                # Seek to the end of the header unit
+                self.fp.seek(math.ceil(self.fp.tell() / 2880) * 2880)
+                if not decoder_name:
+                    decoder_name, offset, args = self._parse_headers(headers)
+
+                header_in_progress = False
+                continue
+
+            if decoder_name:
+                # Keep going to read past the headers
+                continue
+
             value = header[8:].split(b"/")[0].strip()
             if value.startswith(b"="):
                 value = value[1:].strip()
@@ -40,34 +62,91 @@ class FitsImageFile(ImageFile.ImageFile):
                 raise SyntaxError(msg)
             headers[keyword] = value
 
-        naxis = int(headers[b"NAXIS"])
+        if not decoder_name:
-        if naxis == 0:
             msg = "No image data"
             raise ValueError(msg)
-        elif naxis == 1:
-            self._size = 1, int(headers[b"NAXIS1"])
-        else:
-            self._size = int(headers[b"NAXIS1"]), int(headers[b"NAXIS2"])
 
-        number_of_bits = int(headers[b"BITPIX"])
+        offset += self.fp.tell() - 80
+        self.tile = [ImageFile._Tile(decoder_name, (0, 0) + self.size, offset, args)]
+
+    def _get_size(
+        self, headers: dict[bytes, bytes], prefix: bytes
+    ) -> tuple[int, int] | None:
+        naxis = int(headers[prefix + b"NAXIS"])
+        if naxis == 0:
+            return None
+
+        if naxis == 1:
+            return 1, int(headers[prefix + b"NAXIS1"])
+        else:
+            return int(headers[prefix + b"NAXIS1"]), int(headers[prefix + b"NAXIS2"])
+
+    def _parse_headers(
+        self, headers: dict[bytes, bytes]
+    ) -> tuple[str, int, tuple[str | int, ...]]:
+        prefix = b""
+        decoder_name = "raw"
+        offset = 0
+        if (
+            headers.get(b"XTENSION") == b"'BINTABLE'"
+            and headers.get(b"ZIMAGE") == b"T"
+            and headers[b"ZCMPTYPE"] == b"'GZIP_1  '"
+        ):
+            no_prefix_size = self._get_size(headers, prefix) or (0, 0)
+            number_of_bits = int(headers[b"BITPIX"])
+            offset = no_prefix_size[0] * no_prefix_size[1] * (number_of_bits // 8)
+
+            prefix = b"Z"
+            decoder_name = "fits_gzip"
+
+        size = self._get_size(headers, prefix)
+        if not size:
+            return "", 0, ()
+
+        self._size = size
+
+        number_of_bits = int(headers[prefix + b"BITPIX"])
         if number_of_bits == 8:
             self._mode = "L"
         elif number_of_bits == 16:
-            self._mode = "I"
+            self._mode = "I;16"
-            # rawmode = "I;16S"
         elif number_of_bits == 32:
             self._mode = "I"
         elif number_of_bits in (-32, -64):
             self._mode = "F"
-            # rawmode = "F" if number_of_bits == -32 else "F;64F"
 
-        offset = math.ceil(self.fp.tell() / 2880) * 2880
+        args: tuple[str | int, ...]
-        self.tile = [("raw", (0, 0) + self.size, offset, (self.mode, 0, -1))]
+        if decoder_name == "raw":
+            args = (self.mode, 0, -1)
+        else:
+            args = (number_of_bits,)
+        return decoder_name, offset, args
+
+
+class FitsGzipDecoder(ImageFile.PyDecoder):
+    _pulls_fd = True
+
+    def decode(self, buffer: bytes | Image.SupportsArrayInterface) -> tuple[int, int]:
+        assert self.fd is not None
+        value = gzip.decompress(self.fd.read())
+
+        rows = []
+        offset = 0
+        number_of_bits = min(self.args[0] // 8, 4)
+        for y in range(self.state.ysize):
+            row = bytearray()
+            for x in range(self.state.xsize):
+                row += value[offset + (4 - number_of_bits) : offset + 4]
+                offset += 4
+            rows.append(row)
+        self.set_as_raw(bytes([pixel for row in rows[::-1] for pixel in row]))
+        return -1, 0
 
 
 # --------------------------------------------------------------------
 # Registry
 
 Image.register_open(FitsImageFile.format, FitsImageFile, _accept)
+Image.register_decoder("fits_gzip", FitsGzipDecoder)
 
 Image.register_extensions(FitsImageFile.format, [".fit", ".fits"])

Backend/venv/lib/python3.12/site-packages/PIL/FliImagePlugin.py

@@ -14,6 +14,7 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import os
 
@@ -21,14 +22,15 @@ from . import Image, ImageFile, ImagePalette
 from ._binary import i16le as i16
 from ._binary import i32le as i32
 from ._binary import o8
+from ._util import DeferredError
 
 #
 # decoder
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return (
-        len(prefix) >= 6
+        len(prefix) >= 16
         and i16(prefix, 4) in [0xAF11, 0xAF12]
         and i16(prefix, 14) in [0, 3]  # flags
     )
@@ -44,10 +46,16 @@ class FliImageFile(ImageFile.ImageFile):
     format_description = "Autodesk FLI/FLC Animation"
     _close_exclusive_fp_after_loading = False
 
-    def _open(self):
+    def _open(self) -> None:
         # HEAD
+        assert self.fp is not None
         s = self.fp.read(128)
-        if not (_accept(s) and s[20:22] == b"\x00\x00"):
+        if not (
+            _accept(s)
+            and s[20:22] == b"\x00" * 2
+            and s[42:80] == b"\x00" * 38
+            and s[88:] == b"\x00" * 40
+        ):
             msg = "not an FLI/FLC file"
             raise SyntaxError(msg)
 
@@ -75,13 +83,13 @@ class FliImageFile(ImageFile.ImageFile):
 
         if i16(s, 4) == 0xF100:
             # prefix chunk; ignore it
-            self.__offset = self.__offset + i32(s)
+            self.fp.seek(self.__offset + i32(s))
             s = self.fp.read(16)
 
         if i16(s, 4) == 0xF1FA:
             # look for palette chunk
             number_of_subchunks = i16(s, 6)
-            chunk_size = None
+            chunk_size: int | None = None
             for _ in range(number_of_subchunks):
                 if chunk_size is not None:
                     self.fp.seek(chunk_size - 6, os.SEEK_CUR)
@@ -94,8 +102,9 @@ class FliImageFile(ImageFile.ImageFile):
                 if not chunk_size:
                     break
 
-        palette = [o8(r) + o8(g) + o8(b) for (r, g, b) in palette]
+        self.palette = ImagePalette.raw(
-        self.palette = ImagePalette.raw("RGB", b"".join(palette))
+            "RGB", b"".join(o8(r) + o8(g) + o8(b) for (r, g, b) in palette)
+        )
 
         # set things up to decode first frame
         self.__frame = -1
@@ -103,10 +112,11 @@ class FliImageFile(ImageFile.ImageFile):
         self.__rewind = self.fp.tell()
         self.seek(0)
 
-    def _palette(self, palette, shift):
+    def _palette(self, palette: list[tuple[int, int, int]], shift: int) -> None:
         # load palette
 
         i = 0
+        assert self.fp is not None
         for e in range(i16(self.fp.read(2))):
             s = self.fp.read(2)
             i = i + s[0]
@@ -121,7 +131,7 @@ class FliImageFile(ImageFile.ImageFile):
                 palette[i] = (r, g, b)
                 i += 1
 
-    def seek(self, frame):
+    def seek(self, frame: int) -> None:
         if not self._seek_check(frame):
             return
         if frame < self.__frame:
@@ -130,7 +140,9 @@ class FliImageFile(ImageFile.ImageFile):
         for f in range(self.__frame + 1, frame + 1):
             self._seek(f)
 
-    def _seek(self, frame):
+    def _seek(self, frame: int) -> None:
+        if isinstance(self._fp, DeferredError):
+            raise self._fp.ex
         if frame == 0:
             self.__frame = -1
             self._fp.seek(self.__rewind)
@@ -150,16 +162,17 @@ class FliImageFile(ImageFile.ImageFile):
 
         s = self.fp.read(4)
         if not s:
-            raise EOFError
+            msg = "missing frame size"
+            raise EOFError(msg)
 
         framesize = i32(s)
 
         self.decodermaxblock = framesize
-        self.tile = [("fli", (0, 0) + self.size, self.__offset, None)]
+        self.tile = [ImageFile._Tile("fli", (0, 0) + self.size, self.__offset)]
 
         self.__offset += framesize
 
-    def tell(self):
+    def tell(self) -> int:
         return self.__frame
 
 

Backend/venv/lib/python3.12/site-packages/PIL/FontFile.py

@@ -13,16 +13,19 @@
 #
 # See the README file for information on usage and redistribution.
 #
-
+from __future__ import annotations
 
 import os
+from typing import BinaryIO
 
 from . import Image, _binary
 
 WIDTH = 800
 
 
-def puti16(fp, values):
+def puti16(
+    fp: BinaryIO, values: tuple[int, int, int, int, int, int, int, int, int, int]
+) -> None:
     """Write network order (big-endian) 16-bit sequence"""
     for v in values:
         if v < 0:
@@ -33,16 +36,32 @@ def puti16(fp, values):
 class FontFile:
     """Base class for raster font file handlers."""
 
-    bitmap = None
+    bitmap: Image.Image | None = None
 
-    def __init__(self):
+    def __init__(self) -> None:
-        self.info = {}
+        self.info: dict[bytes, bytes | int] = {}
-        self.glyph = [None] * 256
+        self.glyph: list[
+            tuple[
+                tuple[int, int],
+                tuple[int, int, int, int],
+                tuple[int, int, int, int],
+                Image.Image,
+            ]
+            | None
+        ] = [None] * 256
 
-    def __getitem__(self, ix):
+    def __getitem__(self, ix: int) -> (
+        tuple[
+            tuple[int, int],
+            tuple[int, int, int, int],
+            tuple[int, int, int, int],
+            Image.Image,
+        ]
+        | None
+    ):
         return self.glyph[ix]
 
-    def compile(self):
+    def compile(self) -> None:
         """Create metrics and bitmap"""
 
         if self.bitmap:
@@ -51,7 +70,7 @@ class FontFile:
         # create bitmap large enough to hold all data
         h = w = maxwidth = 0
         lines = 1
-        for glyph in self:
+        for glyph in self.glyph:
             if glyph:
                 d, dst, src, im = glyph
                 h = max(h, src[3] - src[1])
@@ -65,20 +84,22 @@ class FontFile:
         ysize = lines * h
 
         if xsize == 0 and ysize == 0:
-            return ""
+            return
 
         self.ysize = h
 
         # paste glyphs into bitmap
         self.bitmap = Image.new("1", (xsize, ysize))
-        self.metrics = [None] * 256
+        self.metrics: list[
+            tuple[tuple[int, int], tuple[int, int, int, int], tuple[int, int, int, int]]
+            | None
+        ] = [None] * 256
         x = y = 0
         for i in range(256):
             glyph = self[i]
             if glyph:
                 d, dst, src, im = glyph
                 xx = src[2] - src[0]
-                # yy = src[3] - src[1]
                 x0, y0 = x, y
                 x = x + xx
                 if x > WIDTH:
@@ -89,12 +110,15 @@ class FontFile:
                 self.bitmap.paste(im.crop(src), s)
                 self.metrics[i] = d, dst, s
 
-    def save(self, filename):
+    def save(self, filename: str) -> None:
         """Save font"""
 
         self.compile()
 
         # font data
+        if not self.bitmap:
+            msg = "No bitmap created"
+            raise ValueError(msg)
         self.bitmap.save(os.path.splitext(filename)[0] + ".pbm", "PNG")
 
         # font metrics
@@ -105,6 +129,6 @@ class FontFile:
             for id in range(256):
                 m = self.metrics[id]
                 if not m:
-                    puti16(fp, [0] * 10)
+                    puti16(fp, (0,) * 10)
                 else:
                     puti16(fp, m[0] + m[1] + m[2])

Backend/venv/lib/python3.12/site-packages/PIL/FpxImagePlugin.py

@@ -14,6 +14,8 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
+
 import olefile
 
 from . import Image, ImageFile
@@ -39,8 +41,8 @@ MODES = {
 # --------------------------------------------------------------------
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
-    return prefix[:8] == olefile.MAGIC
+    return prefix.startswith(olefile.MAGIC)
 
 
 ##
@@ -51,7 +53,7 @@ class FpxImageFile(ImageFile.ImageFile):
     format = "FPX"
     format_description = "FlashPix"
 
-    def _open(self):
+    def _open(self) -> None:
         #
         # read the OLE directory and see if this is a likely
         # to be a FlashPix file
@@ -62,13 +64,14 @@ class FpxImageFile(ImageFile.ImageFile):
             msg = "not an FPX file; invalid OLE file"
             raise SyntaxError(msg) from e
 
-        if self.ole.root.clsid != "56616700-C154-11CE-8553-00AA00A1F95B":
+        root = self.ole.root
+        if not root or root.clsid != "56616700-C154-11CE-8553-00AA00A1F95B":
             msg = "not an FPX file; bad root CLSID"
             raise SyntaxError(msg)
 
         self._open_index(1)
 
-    def _open_index(self, index=1):
+    def _open_index(self, index: int = 1) -> None:
         #
         # get the Image Contents Property Set
 
@@ -78,12 +81,14 @@ class FpxImageFile(ImageFile.ImageFile):
 
         # size (highest resolution)
 
+        assert isinstance(prop[0x1000002], int)
+        assert isinstance(prop[0x1000003], int)
         self._size = prop[0x1000002], prop[0x1000003]
 
         size = max(self.size)
         i = 1
         while size > 64:
-            size = size / 2
+            size = size // 2
             i += 1
         self.maxid = i - 1
 
@@ -97,16 +102,14 @@ class FpxImageFile(ImageFile.ImageFile):
 
         s = prop[0x2000002 | id]
 
-        colors = []
+        if not isinstance(s, bytes) or (bands := i32(s, 4)) > 4:
-        bands = i32(s, 4)
-        if bands > 4:
             msg = "Invalid number of bands"
             raise OSError(msg)
-        for i in range(bands):
-            # note: for now, we ignore the "uncalibrated" flag
-            colors.append(i32(s, 8 + i * 4) & 0x7FFFFFFF)
 
-        self._mode, self.rawmode = MODES[tuple(colors)]
+        # note: for now, we ignore the "uncalibrated" flag
+        colors = tuple(i32(s, 8 + i * 4) & 0x7FFFFFFF for i in range(bands))
+
+        self._mode, self.rawmode = MODES[colors]
 
         # load JPEG tables, if any
         self.jpeg = {}
@@ -117,7 +120,7 @@ class FpxImageFile(ImageFile.ImageFile):
 
         self._open_subimage(1, self.maxid)
 
-    def _open_subimage(self, index=1, subimage=0):
+    def _open_subimage(self, index: int = 1, subimage: int = 0) -> None:
         #
         # setup tile descriptors for a given subimage
 
@@ -163,18 +166,18 @@ class FpxImageFile(ImageFile.ImageFile):
 
             if compression == 0:
                 self.tile.append(
-                    (
+                    ImageFile._Tile(
                         "raw",
                         (x, y, x1, y1),
                         i32(s, i) + 28,
-                        (self.rawmode,),
+                        self.rawmode,
                     )
                 )
 
             elif compression == 1:
                 # FIXME: the fill decoder is not implemented
                 self.tile.append(
-                    (
+                    ImageFile._Tile(
                         "fill",
                         (x, y, x1, y1),
                         i32(s, i) + 28,
@@ -202,7 +205,7 @@ class FpxImageFile(ImageFile.ImageFile):
                     jpegmode = rawmode
 
                 self.tile.append(
-                    (
+                    ImageFile._Tile(
                         "jpeg",
                         (x, y, x1, y1),
                         i32(s, i) + 28,
@@ -227,19 +230,20 @@ class FpxImageFile(ImageFile.ImageFile):
                     break  # isn't really required
 
         self.stream = stream
+        self._fp = self.fp
         self.fp = None
 
-    def load(self):
+    def load(self) -> Image.core.PixelAccess | None:
         if not self.fp:
             self.fp = self.ole.openstream(self.stream[:2] + ["Subimage 0000 Data"])
 
         return ImageFile.ImageFile.load(self)
 
-    def close(self):
+    def close(self) -> None:
         self.ole.close()
         super().close()
 
-    def __exit__(self, *args):
+    def __exit__(self, *args: object) -> None:
         self.ole.close()
         super().__exit__()
 

Backend/venv/lib/python3.12/site-packages/PIL/FtexImagePlugin.py

@@ -51,6 +51,8 @@ bytes for that mipmap level.
 Note: All data is stored in little-Endian (Intel) byte order.
 """
 
+from __future__ import annotations
+
 import struct
 from enum import IntEnum
 from io import BytesIO
@@ -69,7 +71,7 @@ class FtexImageFile(ImageFile.ImageFile):
     format = "FTEX"
     format_description = "Texture File Format (IW2:EOC)"
 
-    def _open(self):
+    def _open(self) -> None:
         if not _accept(self.fp.read(4)):
             msg = "not an FTEX file"
             raise SyntaxError(msg)
@@ -77,8 +79,6 @@ class FtexImageFile(ImageFile.ImageFile):
         self._size = struct.unpack("<2i", self.fp.read(8))
         mipmap_count, format_count = struct.unpack("<2i", self.fp.read(8))
 
-        self._mode = "RGB"
-
         # Only support single-format files.
         # I don't know of any multi-format file.
         assert format_count == 1
@@ -91,9 +91,10 @@ class FtexImageFile(ImageFile.ImageFile):
 
         if format == Format.DXT1:
             self._mode = "RGBA"
-            self.tile = [("bcn", (0, 0) + self.size, 0, 1)]
+            self.tile = [ImageFile._Tile("bcn", (0, 0) + self.size, 0, (1,))]
         elif format == Format.UNCOMPRESSED:
-            self.tile = [("raw", (0, 0) + self.size, 0, ("RGB", 0, 1))]
+            self._mode = "RGB"
+            self.tile = [ImageFile._Tile("raw", (0, 0) + self.size, 0, "RGB")]
         else:
             msg = f"Invalid texture compression format: {repr(format)}"
             raise ValueError(msg)
@@ -101,12 +102,12 @@ class FtexImageFile(ImageFile.ImageFile):
         self.fp.close()
         self.fp = BytesIO(data)
 
-    def load_seek(self, pos):
+    def load_seek(self, pos: int) -> None:
         pass
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
-    return prefix[:4] == MAGIC
+    return prefix.startswith(MAGIC)
 
 
 Image.register_open(FtexImageFile.format, FtexImageFile, _accept)

Backend/venv/lib/python3.12/site-packages/PIL/GbrImagePlugin.py

@@ -23,12 +23,13 @@
 # Version 2 files are saved by GIMP v2.8 (at least)
 # Version 3 files have a format specifier of 18 for 16bit floats in
 #   the color depth field. This is currently unsupported by Pillow.
+from __future__ import annotations
 
 from . import Image, ImageFile
 from ._binary import i32be as i32
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
     return len(prefix) >= 8 and i32(prefix, 0) >= 20 and i32(prefix, 4) in (1, 2)
 
 
@@ -40,7 +41,7 @@ class GbrImageFile(ImageFile.ImageFile):
     format = "GBR"
     format_description = "GIMP brush file"
 
-    def _open(self):
+    def _open(self) -> None:
         header_size = i32(self.fp.read(4))
         if header_size < 20:
             msg = "not a GIMP brush"
@@ -53,7 +54,7 @@ class GbrImageFile(ImageFile.ImageFile):
         width = i32(self.fp.read(4))
         height = i32(self.fp.read(4))
         color_depth = i32(self.fp.read(4))
-        if width <= 0 or height <= 0:
+        if width == 0 or height == 0:
             msg = "not a GIMP brush"
             raise SyntaxError(msg)
         if color_depth not in (1, 4):
@@ -70,7 +71,7 @@ class GbrImageFile(ImageFile.ImageFile):
                 raise SyntaxError(msg)
             self.info["spacing"] = i32(self.fp.read(4))
 
-        comment = self.fp.read(comment_length)[:-1]
+        self.info["comment"] = self.fp.read(comment_length)[:-1]
 
         if color_depth == 1:
             self._mode = "L"
@@ -79,16 +80,14 @@ class GbrImageFile(ImageFile.ImageFile):
 
         self._size = width, height
 
-        self.info["comment"] = comment
-
         # Image might not be small
         Image._decompression_bomb_check(self.size)
 
         # Data is an uncompressed block of w * h * bytes/pixel
         self._data_size = width * height * color_depth
 
-    def load(self):
+    def load(self) -> Image.core.PixelAccess | None:
-        if not self.im:
+        if self._im is None:
             self.im = Image.core.new(self.mode, self.size)
             self.frombytes(self.fp.read(self._data_size))
         return Image.Image.load(self)

Backend/venv/lib/python3.12/site-packages/PIL/GdImageFile.py

@@ -25,11 +25,14 @@
     implementation is provided for convenience and demonstrational
     purposes only.
 """
+from __future__ import annotations
 
+from typing import IO
 
 from . import ImageFile, ImagePalette, UnidentifiedImageError
 from ._binary import i16be as i16
 from ._binary import i32be as i32
+from ._typing import StrOrBytesPath
 
 
 class GdImageFile(ImageFile.ImageFile):
@@ -43,15 +46,17 @@ class GdImageFile(ImageFile.ImageFile):
     format = "GD"
     format_description = "GD uncompressed images"
 
-    def _open(self):
+    def _open(self) -> None:
         # Header
+        assert self.fp is not None
+
         s = self.fp.read(1037)
 
         if i16(s) not in [65534, 65535]:
             msg = "Not a valid GD 2.x .gd file"
             raise SyntaxError(msg)
 
-        self._mode = "L"  # FIXME: "P"
+        self._mode = "P"
         self._size = i16(s, 2), i16(s, 4)
 
         true_color = s[6]
@@ -63,20 +68,20 @@ class GdImageFile(ImageFile.ImageFile):
             self.info["transparency"] = tindex
 
         self.palette = ImagePalette.raw(
-            "XBGR", s[7 + true_color_offset + 4 : 7 + true_color_offset + 4 + 256 * 4]
+            "RGBX", s[7 + true_color_offset + 6 : 7 + true_color_offset + 6 + 256 * 4]
         )
 
         self.tile = [
-            (
+            ImageFile._Tile(
                 "raw",
                 (0, 0) + self.size,
-                7 + true_color_offset + 4 + 256 * 4,
+                7 + true_color_offset + 6 + 256 * 4,
-                ("L", 0, 1),
+                "L",
             )
         ]
 
 
-def open(fp, mode="r"):
+def open(fp: StrOrBytesPath | IO[bytes], mode: str = "r") -> GdImageFile:
     """
     Load texture from a GD image file.
 

Backend/venv/lib/python3.12/site-packages/PIL/GifImagePlugin.py

@@ -23,17 +23,36 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import itertools
 import math
 import os
 import subprocess
 from enum import IntEnum
+from functools import cached_property
+from typing import Any, NamedTuple, cast
 
-from . import Image, ImageChops, ImageFile, ImagePalette, ImageSequence
+from . import (
+    Image,
+    ImageChops,
+    ImageFile,
+    ImageMath,
+    ImageOps,
+    ImagePalette,
+    ImageSequence,
+)
 from ._binary import i16le as i16
 from ._binary import o8
 from ._binary import o16le as o16
+from ._util import DeferredError
+
+TYPE_CHECKING = False
+if TYPE_CHECKING:
+    from typing import IO, Literal
+
+    from . import _imaging
+    from ._typing import Buffer
 
 
 class LoadingStrategy(IntEnum):
@@ -51,8 +70,8 @@ LOADING_STRATEGY = LoadingStrategy.RGB_AFTER_FIRST
 # Identify/read GIF files
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
-    return prefix[:6] in [b"GIF87a", b"GIF89a"]
+    return prefix.startswith((b"GIF87a", b"GIF89a"))
 
 
 ##
@@ -67,19 +86,19 @@ class GifImageFile(ImageFile.ImageFile):
 
     global_palette = None
 
-    def data(self):
+    def data(self) -> bytes | None:
         s = self.fp.read(1)
         if s and s[0]:
             return self.fp.read(s[0])
         return None
 
-    def _is_palette_needed(self, p):
+    def _is_palette_needed(self, p: bytes) -> bool:
         for i in range(0, len(p), 3):
             if not (i // 3 == p[i] == p[i + 1] == p[i + 2]):
                 return True
         return False
 
-    def _open(self):
+    def _open(self) -> None:
         # Screen
         s = self.fp.read(13)
         if not _accept(s):
@@ -88,7 +107,6 @@ class GifImageFile(ImageFile.ImageFile):
 
         self.info["version"] = s[:6]
         self._size = i16(s, 6), i16(s, 8)
-        self.tile = []
         flags = s[10]
         bits = (flags & 7) + 1
 
@@ -103,12 +121,11 @@ class GifImageFile(ImageFile.ImageFile):
 
         self._fp = self.fp  # FIXME: hack
         self.__rewind = self.fp.tell()
-        self._n_frames = None
+        self._n_frames: int | None = None
-        self._is_animated = None
         self._seek(0)  # get ready to read first frame
 
     @property
-    def n_frames(self):
+    def n_frames(self) -> int:
         if self._n_frames is None:
             current = self.tell()
             try:
@@ -119,30 +136,29 @@ class GifImageFile(ImageFile.ImageFile):
             self.seek(current)
         return self._n_frames
 
-    @property
+    @cached_property
-    def is_animated(self):
+    def is_animated(self) -> bool:
-        if self._is_animated is None:
+        if self._n_frames is not None:
-            if self._n_frames is not None:
+            return self._n_frames != 1
-                self._is_animated = self._n_frames != 1
-            else:
-                current = self.tell()
-                if current:
-                    self._is_animated = True
-                else:
-                    try:
-                        self._seek(1, False)
-                        self._is_animated = True
-                    except EOFError:
-                        self._is_animated = False
 
-                    self.seek(current)
+        current = self.tell()
-        return self._is_animated
+        if current:
+            return True
 
-    def seek(self, frame):
+        try:
+            self._seek(1, False)
+            is_animated = True
+        except EOFError:
+            is_animated = False
+
+        self.seek(current)
+        return is_animated
+
+    def seek(self, frame: int) -> None:
         if not self._seek_check(frame):
             return
         if frame < self.__frame:
-            self.im = None
+            self._im = None
             self._seek(0)
 
         last_frame = self.__frame
@@ -154,11 +170,13 @@ class GifImageFile(ImageFile.ImageFile):
                 msg = "no more images in GIF file"
                 raise EOFError(msg) from e
 
-    def _seek(self, frame, update_image=True):
+    def _seek(self, frame: int, update_image: bool = True) -> None:
+        if isinstance(self._fp, DeferredError):
+            raise self._fp.ex
         if frame == 0:
             # rewind
             self.__offset = 0
-            self.dispose = None
+            self.dispose: _imaging.ImagingCore | None = None
             self.__frame = -1
             self._fp.seek(self.__rewind)
             self.disposal_method = 0
@@ -183,11 +201,12 @@ class GifImageFile(ImageFile.ImageFile):
 
         s = self.fp.read(1)
         if not s or s == b";":
-            raise EOFError
+            msg = "no more images in GIF file"
+            raise EOFError(msg)
 
-        palette = None
+        palette: ImagePalette.ImagePalette | Literal[False] | None = None
 
-        info = {}
+        info: dict[str, Any] = {}
         frame_transparency = None
         interlace = None
         frame_dispose_extent = None
@@ -203,7 +222,7 @@ class GifImageFile(ImageFile.ImageFile):
                 #
                 s = self.fp.read(1)
                 block = self.data()
-                if s[0] == 249:
+                if s[0] == 249 and block is not None:
                     #
                     # graphic control extension
                     #
@@ -239,14 +258,14 @@ class GifImageFile(ImageFile.ImageFile):
                         info["comment"] = comment
                     s = None
                     continue
-                elif s[0] == 255 and frame == 0:
+                elif s[0] == 255 and frame == 0 and block is not None:
                     #
                     # application extension
                     #
                     info["extension"] = block, self.fp.tell()
-                    if block[:11] == b"NETSCAPE2.0":
+                    if block.startswith(b"NETSCAPE2.0"):
                         block = self.data()
-                        if len(block) >= 3 and block[0] == 1:
+                        if block and len(block) >= 3 and block[0] == 1:
                             self.info["loop"] = i16(block, 1)
                 while self.data():
                     pass
@@ -280,15 +299,11 @@ class GifImageFile(ImageFile.ImageFile):
                 bits = self.fp.read(1)[0]
                 self.__offset = self.fp.tell()
                 break
-
-            else:
-                pass
-                # raise OSError, "illegal GIF tag `%x`" % s[0]
             s = None
 
         if interlace is None:
-            # self._fp = None
+            msg = "image not found in GIF frame"
-            raise EOFError
+            raise EOFError(msg)
 
         self.__frame = frame
         if not update_image:
@@ -310,18 +325,20 @@ class GifImageFile(ImageFile.ImageFile):
             else:
                 self._mode = "L"
 
-            if not palette and self.global_palette:
+            if palette:
+                self.palette = palette
+            elif self.global_palette:
                 from copy import copy
 
-                palette = copy(self.global_palette)
+                self.palette = copy(self.global_palette)
-            self.palette = palette
+            else:
+                self.palette = None
         else:
             if self.mode == "P":
                 if (
                     LOADING_STRATEGY != LoadingStrategy.RGB_AFTER_DIFFERENT_PALETTE_ONLY
                     or palette
                 ):
-                    self.pyaccess = None
                     if "transparency" in self.info:
                         self.im.putpalettealpha(self.info["transparency"], 0)
                         self.im = self.im.convert("RGBA", Image.Dither.FLOYDSTEINBERG)
@@ -331,58 +348,63 @@ class GifImageFile(ImageFile.ImageFile):
                         self._mode = "RGB"
                         self.im = self.im.convert("RGB", Image.Dither.FLOYDSTEINBERG)
 
-        def _rgb(color):
+        def _rgb(color: int) -> tuple[int, int, int]:
             if self._frame_palette:
-                color = tuple(self._frame_palette.palette[color * 3 : color * 3 + 3])
+                if color * 3 + 3 > len(self._frame_palette.palette):
+                    color = 0
+                return cast(
+                    tuple[int, int, int],
+                    tuple(self._frame_palette.palette[color * 3 : color * 3 + 3]),
+                )
             else:
-                color = (color, color, color)
+                return (color, color, color)
-            return color
 
-        self.dispose_extent = frame_dispose_extent
+        self.dispose = None
-        try:
+        self.dispose_extent: tuple[int, int, int, int] | None = frame_dispose_extent
-            if self.disposal_method < 2:
+        if self.dispose_extent and self.disposal_method >= 2:
-                # do not dispose or none specified
+            try:
-                self.dispose = None
+                if self.disposal_method == 2:
-            elif self.disposal_method == 2:
+                    # replace with background colour
-                # replace with background colour
 
-                # only dispose the extent in this frame
-                x0, y0, x1, y1 = self.dispose_extent
-                dispose_size = (x1 - x0, y1 - y0)
-
-                Image._decompression_bomb_check(dispose_size)
-
-                # by convention, attempt to use transparency first
-                dispose_mode = "P"
-                color = self.info.get("transparency", frame_transparency)
-                if color is not None:
-                    if self.mode in ("RGB", "RGBA"):
-                        dispose_mode = "RGBA"
-                        color = _rgb(color) + (0,)
-                else:
-                    color = self.info.get("background", 0)
-                    if self.mode in ("RGB", "RGBA"):
-                        dispose_mode = "RGB"
-                        color = _rgb(color)
-                self.dispose = Image.core.fill(dispose_mode, dispose_size, color)
-            else:
-                # replace with previous contents
-                if self.im is not None:
                     # only dispose the extent in this frame
-                    self.dispose = self._crop(self.im, self.dispose_extent)
-                elif frame_transparency is not None:
                     x0, y0, x1, y1 = self.dispose_extent
                     dispose_size = (x1 - x0, y1 - y0)
 
                     Image._decompression_bomb_check(dispose_size)
+
+                    # by convention, attempt to use transparency first
                     dispose_mode = "P"
-                    color = frame_transparency
+                    color = self.info.get("transparency", frame_transparency)
-                    if self.mode in ("RGB", "RGBA"):
+                    if color is not None:
-                        dispose_mode = "RGBA"
+                        if self.mode in ("RGB", "RGBA"):
-                        color = _rgb(frame_transparency) + (0,)
+                            dispose_mode = "RGBA"
+                            color = _rgb(color) + (0,)
+                    else:
+                        color = self.info.get("background", 0)
+                        if self.mode in ("RGB", "RGBA"):
+                            dispose_mode = "RGB"
+                            color = _rgb(color)
                     self.dispose = Image.core.fill(dispose_mode, dispose_size, color)
-        except AttributeError:
+                else:
-            pass
+                    # replace with previous contents
+                    if self._im is not None:
+                        # only dispose the extent in this frame
+                        self.dispose = self._crop(self.im, self.dispose_extent)
+                    elif frame_transparency is not None:
+                        x0, y0, x1, y1 = self.dispose_extent
+                        dispose_size = (x1 - x0, y1 - y0)
+
+                        Image._decompression_bomb_check(dispose_size)
+                        dispose_mode = "P"
+                        color = frame_transparency
+                        if self.mode in ("RGB", "RGBA"):
+                            dispose_mode = "RGBA"
+                            color = _rgb(frame_transparency) + (0,)
+                        self.dispose = Image.core.fill(
+                            dispose_mode, dispose_size, color
+                        )
+            except AttributeError:
+                pass
 
         if interlace is not None:
             transparency = -1
@@ -393,7 +415,7 @@ class GifImageFile(ImageFile.ImageFile):
                 elif self.mode not in ("RGB", "RGBA"):
                     transparency = frame_transparency
             self.tile = [
-                (
+                ImageFile._Tile(
                     "gif",
                     (x0, y0, x1, y1),
                     self.__offset,
@@ -409,7 +431,7 @@ class GifImageFile(ImageFile.ImageFile):
             elif k in self.info:
                 del self.info[k]
 
-    def load_prepare(self):
+    def load_prepare(self) -> None:
         temp_mode = "P" if self._frame_palette else "L"
         self._prev_im = None
         if self.__frame == 0:
@@ -421,15 +443,22 @@ class GifImageFile(ImageFile.ImageFile):
             self._prev_im = self.im
             if self._frame_palette:
                 self.im = Image.core.fill("P", self.size, self._frame_transparency or 0)
-                self.im.putpalette(*self._frame_palette.getdata())
+                self.im.putpalette("RGB", *self._frame_palette.getdata())
             else:
-                self.im = None
+                self._im = None
+        if not self._prev_im and self._im is not None and self.size != self.im.size:
+            expanded_im = Image.core.fill(self.im.mode, self.size)
+            if self._frame_palette:
+                expanded_im.putpalette("RGB", *self._frame_palette.getdata())
+            expanded_im.paste(self.im, (0, 0) + self.im.size)
+
+            self.im = expanded_im
         self._mode = temp_mode
         self._frame_palette = None
 
         super().load_prepare()
 
-    def load_end(self):
+    def load_end(self) -> None:
         if self.__frame == 0:
             if self.mode == "P" and LOADING_STRATEGY == LoadingStrategy.RGB_ALWAYS:
                 if self._frame_transparency is not None:
@@ -441,21 +470,37 @@ class GifImageFile(ImageFile.ImageFile):
             return
         if not self._prev_im:
             return
+        if self.size != self._prev_im.size:
+            if self._frame_transparency is not None:
+                expanded_im = Image.core.fill("RGBA", self.size)
+            else:
+                expanded_im = Image.core.fill("P", self.size)
+                expanded_im.putpalette("RGB", "RGB", self.im.getpalette())
+                expanded_im = expanded_im.convert("RGB")
+            expanded_im.paste(self._prev_im, (0, 0) + self._prev_im.size)
+
+            self._prev_im = expanded_im
+            assert self._prev_im is not None
         if self._frame_transparency is not None:
-            self.im.putpalettealpha(self._frame_transparency, 0)
+            if self.mode == "L":
-            frame_im = self.im.convert("RGBA")
+                frame_im = self.im.convert_transparent("LA", self._frame_transparency)
+            else:
+                self.im.putpalettealpha(self._frame_transparency, 0)
+                frame_im = self.im.convert("RGBA")
         else:
             frame_im = self.im.convert("RGB")
+
+        assert self.dispose_extent is not None
         frame_im = self._crop(frame_im, self.dispose_extent)
 
         self.im = self._prev_im
         self._mode = self.im.mode
-        if frame_im.mode == "RGBA":
+        if frame_im.mode in ("LA", "RGBA"):
             self.im.paste(frame_im, self.dispose_extent, frame_im)
         else:
             self.im.paste(frame_im, self.dispose_extent)
 
-    def tell(self):
+    def tell(self) -> int:
         return self.__frame
 
 
@@ -466,7 +511,7 @@ class GifImageFile(ImageFile.ImageFile):
 RAWMODE = {"1": "L", "L": "L", "P": "P"}
 
 
-def _normalize_mode(im):
+def _normalize_mode(im: Image.Image) -> Image.Image:
     """
     Takes an image (or frame), returns an image in a mode that is appropriate
     for saving in a Gif.
@@ -482,6 +527,7 @@ def _normalize_mode(im):
         return im
     if Image.getmodebase(im.mode) == "RGB":
         im = im.convert("P", palette=Image.Palette.ADAPTIVE)
+        assert im.palette is not None
         if im.palette.mode == "RGBA":
             for rgba in im.palette.colors:
                 if rgba[3] == 0:
@@ -491,7 +537,12 @@ def _normalize_mode(im):
     return im.convert("L")
 
 
-def _normalize_palette(im, palette, info):
+_Palette = bytes | bytearray | list[int] | ImagePalette.ImagePalette
+
+
+def _normalize_palette(
+    im: Image.Image, palette: _Palette | None, info: dict[str, Any]
+) -> Image.Image:
     """
     Normalizes the palette for image.
       - Sets the palette to the incoming palette, if provided.
@@ -513,14 +564,18 @@ def _normalize_palette(im, palette, info):
 
     if im.mode == "P":
         if not source_palette:
-            source_palette = im.im.getpalette("RGB")[:768]
+            im_palette = im.getpalette(None)
+            assert im_palette is not None
+            source_palette = bytearray(im_palette)
     else:  # L-mode
         if not source_palette:
             source_palette = bytearray(i // 3 for i in range(768))
         im.palette = ImagePalette.ImagePalette("RGB", palette=source_palette)
+    assert source_palette is not None
 
     if palette:
-        used_palette_colors = []
+        used_palette_colors: list[int | None] = []
+        assert im.palette is not None
         for i in range(0, len(source_palette), 3):
             source_color = tuple(source_palette[i : i + 3])
             index = im.palette.colors.get(source_color)
@@ -533,20 +588,38 @@ def _normalize_palette(im, palette, info):
                     if j not in used_palette_colors:
                         used_palette_colors[i] = j
                         break
-        im = im.remap_palette(used_palette_colors)
+        dest_map: list[int] = []
+        for index in used_palette_colors:
+            assert index is not None
+            dest_map.append(index)
+        im = im.remap_palette(dest_map)
     else:
-        used_palette_colors = _get_optimize(im, info)
+        optimized_palette_colors = _get_optimize(im, info)
-        if used_palette_colors is not None:
+        if optimized_palette_colors is not None:
-            return im.remap_palette(used_palette_colors, source_palette)
+            im = im.remap_palette(optimized_palette_colors, source_palette)
+            if "transparency" in info:
+                try:
+                    info["transparency"] = optimized_palette_colors.index(
+                        info["transparency"]
+                    )
+                except ValueError:
+                    del info["transparency"]
+            return im
 
+    assert im.palette is not None
     im.palette.palette = source_palette
     return im
 
 
-def _write_single_frame(im, fp, palette):
+def _write_single_frame(
+    im: Image.Image,
+    fp: IO[bytes],
+    palette: _Palette | None,
+) -> None:
     im_out = _normalize_mode(im)
     for k, v in im_out.info.items():
-        im.encoderinfo.setdefault(k, v)
+        if isinstance(k, str):
+            im.encoderinfo.setdefault(k, v)
     im_out = _normalize_palette(im_out, palette, im.encoderinfo)
 
     for s in _get_global_header(im_out, im.encoderinfo):
@@ -559,26 +632,40 @@ def _write_single_frame(im, fp, palette):
     _write_local_header(fp, im, (0, 0), flags)
 
     im_out.encoderconfig = (8, get_interlace(im))
-    ImageFile._save(im_out, fp, [("gif", (0, 0) + im.size, 0, RAWMODE[im_out.mode])])
+    ImageFile._save(
+        im_out, fp, [ImageFile._Tile("gif", (0, 0) + im.size, 0, RAWMODE[im_out.mode])]
+    )
 
     fp.write(b"\0")  # end of image data
 
 
-def _getbbox(base_im, im_frame):
+def _getbbox(
-    if _get_palette_bytes(im_frame) == _get_palette_bytes(base_im):
+    base_im: Image.Image, im_frame: Image.Image
-        delta = ImageChops.subtract_modulo(im_frame, base_im)
+) -> tuple[Image.Image, tuple[int, int, int, int] | None]:
-    else:
+    palette_bytes = [
-        delta = ImageChops.subtract_modulo(
+        bytes(im.palette.palette) if im.palette else b"" for im in (base_im, im_frame)
-            im_frame.convert("RGBA"), base_im.convert("RGBA")
+    ]
-        )
+    if palette_bytes[0] != palette_bytes[1]:
-    return delta.getbbox(alpha_only=False)
+        im_frame = im_frame.convert("RGBA")
+        base_im = base_im.convert("RGBA")
+    delta = ImageChops.subtract_modulo(im_frame, base_im)
+    return delta, delta.getbbox(alpha_only=False)
 
 
-def _write_multiple_frames(im, fp, palette):
+class _Frame(NamedTuple):
+    im: Image.Image
+    bbox: tuple[int, int, int, int] | None
+    encoderinfo: dict[str, Any]
+
+
+def _write_multiple_frames(
+    im: Image.Image, fp: IO[bytes], palette: _Palette | None
+) -> bool:
     duration = im.encoderinfo.get("duration")
     disposal = im.encoderinfo.get("disposal", im.info.get("disposal"))
 
-    im_frames = []
+    im_frames: list[_Frame] = []
+    previous_im: Image.Image | None = None
     frame_count = 0
     background_im = None
     for imSequence in itertools.chain([im], im.encoderinfo.get("append_images", [])):
@@ -589,12 +676,13 @@ def _write_multiple_frames(im, fp, palette):
                 for k, v in im_frame.info.items():
                     if k == "transparency":
                         continue
-                    im.encoderinfo.setdefault(k, v)
+                    if isinstance(k, str):
+                        im.encoderinfo.setdefault(k, v)
 
             encoderinfo = im.encoderinfo.copy()
-            im_frame = _normalize_palette(im_frame, palette, encoderinfo)
             if "transparency" in im_frame.info:
                 encoderinfo.setdefault("transparency", im_frame.info["transparency"])
+            im_frame = _normalize_palette(im_frame, palette, encoderinfo)
             if isinstance(duration, (list, tuple)):
                 encoderinfo["duration"] = duration[frame_count]
             elif duration is None and "duration" in im_frame.info:
@@ -603,63 +691,116 @@ def _write_multiple_frames(im, fp, palette):
                 encoderinfo["disposal"] = disposal[frame_count]
             frame_count += 1
 
-            if im_frames:
+            diff_frame = None
+            if im_frames and previous_im:
                 # delta frame
-                previous = im_frames[-1]
+                delta, bbox = _getbbox(previous_im, im_frame)
-                bbox = _getbbox(previous["im"], im_frame)
                 if not bbox:
                     # This frame is identical to the previous frame
                     if encoderinfo.get("duration"):
-                        previous["encoderinfo"]["duration"] += encoderinfo["duration"]
+                        im_frames[-1].encoderinfo["duration"] += encoderinfo["duration"]
                     continue
-                if encoderinfo.get("disposal") == 2:
+                if im_frames[-1].encoderinfo.get("disposal") == 2:
-                    if background_im is None:
+                    # To appear correctly in viewers using a convention,
-                        color = im.encoderinfo.get(
+                    # only consider transparency, and not background color
-                            "transparency", im.info.get("transparency", (0, 0, 0))
+                    color = im.encoderinfo.get(
-                        )
+                        "transparency", im.info.get("transparency")
-                        background = _get_background(im_frame, color)
+                    )
-                        background_im = Image.new("P", im_frame.size, background)
+                    if color is not None:
-                        background_im.putpalette(im_frames[0]["im"].palette)
+                        if background_im is None:
-                    bbox = _getbbox(background_im, im_frame)
+                            background = _get_background(im_frame, color)
+                            background_im = Image.new("P", im_frame.size, background)
+                            first_palette = im_frames[0].im.palette
+                            assert first_palette is not None
+                            background_im.putpalette(first_palette, first_palette.mode)
+                        bbox = _getbbox(background_im, im_frame)[1]
+                    else:
+                        bbox = (0, 0) + im_frame.size
+                elif encoderinfo.get("optimize") and im_frame.mode != "1":
+                    if "transparency" not in encoderinfo:
+                        assert im_frame.palette is not None
+                        try:
+                            encoderinfo["transparency"] = (
+                                im_frame.palette._new_color_index(im_frame)
+                            )
+                        except ValueError:
+                            pass
+                    if "transparency" in encoderinfo:
+                        # When the delta is zero, fill the image with transparency
+                        diff_frame = im_frame.copy()
+                        fill = Image.new("P", delta.size, encoderinfo["transparency"])
+                        if delta.mode == "RGBA":
+                            r, g, b, a = delta.split()
+                            mask = ImageMath.lambda_eval(
+                                lambda args: args["convert"](
+                                    args["max"](
+                                        args["max"](
+                                            args["max"](args["r"], args["g"]), args["b"]
+                                        ),
+                                        args["a"],
+                                    )
+                                    * 255,
+                                    "1",
+                                ),
+                                r=r,
+                                g=g,
+                                b=b,
+                                a=a,
+                            )
+                        else:
+                            if delta.mode == "P":
+                                # Convert to L without considering palette
+                                delta_l = Image.new("L", delta.size)
+                                delta_l.putdata(delta.getdata())
+                                delta = delta_l
+                            mask = ImageMath.lambda_eval(
+                                lambda args: args["convert"](args["im"] * 255, "1"),
+                                im=delta,
+                            )
+                        diff_frame.paste(fill, mask=ImageOps.invert(mask))
             else:
                 bbox = None
-            im_frames.append({"im": im_frame, "bbox": bbox, "encoderinfo": encoderinfo})
+            previous_im = im_frame
+            im_frames.append(_Frame(diff_frame or im_frame, bbox, encoderinfo))
 
-    if len(im_frames) > 1:
+    if len(im_frames) == 1:
-        for frame_data in im_frames:
+        if "duration" in im.encoderinfo:
-            im_frame = frame_data["im"]
+            # Since multiple frames will not be written, use the combined duration
-            if not frame_data["bbox"]:
+            im.encoderinfo["duration"] = im_frames[0].encoderinfo["duration"]
-                # global header
+        return False
-                for s in _get_global_header(im_frame, frame_data["encoderinfo"]):
-                    fp.write(s)
-                offset = (0, 0)
-            else:
-                # compress difference
-                if not palette:
-                    frame_data["encoderinfo"]["include_color_table"] = True
 
-                im_frame = im_frame.crop(frame_data["bbox"])
+    for frame_data in im_frames:
-                offset = frame_data["bbox"][:2]
+        im_frame = frame_data.im
-            _write_frame_data(fp, im_frame, offset, frame_data["encoderinfo"])
+        if not frame_data.bbox:
-        return True
+            # global header
-    elif "duration" in im.encoderinfo and isinstance(
+            for s in _get_global_header(im_frame, frame_data.encoderinfo):
-        im.encoderinfo["duration"], (list, tuple)
+                fp.write(s)
-    ):
+            offset = (0, 0)
-        # Since multiple frames will not be written, add together the frame durations
+        else:
-        im.encoderinfo["duration"] = sum(im.encoderinfo["duration"])
+            # compress difference
+            if not palette:
+                frame_data.encoderinfo["include_color_table"] = True
+
+            if frame_data.bbox != (0, 0) + im_frame.size:
+                im_frame = im_frame.crop(frame_data.bbox)
+            offset = frame_data.bbox[:2]
+        _write_frame_data(fp, im_frame, offset, frame_data.encoderinfo)
+    return True
 
 
-def _save_all(im, fp, filename):
+def _save_all(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     _save(im, fp, filename, save_all=True)
 
 
-def _save(im, fp, filename, save_all=False):
+def _save(
+    im: Image.Image, fp: IO[bytes], filename: str | bytes, save_all: bool = False
+) -> None:
     # header
     if "palette" in im.encoderinfo or "palette" in im.info:
         palette = im.encoderinfo.get("palette", im.info.get("palette"))
     else:
         palette = None
-        im.encoderinfo["optimize"] = im.encoderinfo.get("optimize", True)
+        im.encoderinfo.setdefault("optimize", True)
 
     if not save_all or not _write_multiple_frames(im, fp, palette):
         _write_single_frame(im, fp, palette)
@@ -670,7 +811,7 @@ def _save(im, fp, filename, save_all=False):
         fp.flush()
 
 
-def get_interlace(im):
+def get_interlace(im: Image.Image) -> int:
     interlace = im.encoderinfo.get("interlace", 1)
 
     # workaround for @PIL153
@@ -680,23 +821,13 @@ def get_interlace(im):
     return interlace
 
 
-def _write_local_header(fp, im, offset, flags):
+def _write_local_header(
-    transparent_color_exists = False
+    fp: IO[bytes], im: Image.Image, offset: tuple[int, int], flags: int
+) -> None:
     try:
-        transparency = int(im.encoderinfo["transparency"])
+        transparency = im.encoderinfo["transparency"]
-    except (KeyError, ValueError):
+    except KeyError:
-        pass
+        transparency = None
-    else:
-        # optimize the block away if transparent color is not used
-        transparent_color_exists = True
-
-        used_palette_colors = _get_optimize(im, im.encoderinfo)
-        if used_palette_colors is not None:
-            # adjust the transparency index after optimize
-            try:
-                transparency = used_palette_colors.index(transparency)
-            except ValueError:
-                transparent_color_exists = False
 
     if "duration" in im.encoderinfo:
         duration = int(im.encoderinfo["duration"] / 10)
@@ -705,11 +836,9 @@ def _write_local_header(fp, im, offset, flags):
 
     disposal = int(im.encoderinfo.get("disposal", 0))
 
-    if transparent_color_exists or duration != 0 or disposal:
+    if transparency is not None or duration != 0 or disposal:
-        packed_flag = 1 if transparent_color_exists else 0
+        packed_flag = 1 if transparency is not None else 0
         packed_flag |= disposal << 2
-        if not transparent_color_exists:
-            transparency = 0
 
         fp.write(
             b"!"
@@ -717,7 +846,7 @@ def _write_local_header(fp, im, offset, flags):
             + o8(4)  # length
             + o8(packed_flag)  # packed fields
             + o16(duration)  # duration
-            + o8(transparency)  # transparency index
+            + o8(transparency or 0)  # transparency index
             + o8(0)
         )
 
@@ -742,7 +871,7 @@ def _write_local_header(fp, im, offset, flags):
     fp.write(o8(8))  # bits
 
 
-def _save_netpbm(im, fp, filename):
+def _save_netpbm(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     # Unused by default.
     # To use, uncomment the register_save call at the end of the file.
     #
@@ -773,6 +902,7 @@ def _save_netpbm(im, fp, filename):
                 )
 
                 # Allow ppmquant to receive SIGPIPE if ppmtogif exits
+                assert quant_proc.stdout is not None
                 quant_proc.stdout.close()
 
                 retcode = quant_proc.wait()
@@ -794,7 +924,7 @@ def _save_netpbm(im, fp, filename):
 _FORCE_OPTIMIZE = False
 
 
-def _get_optimize(im, info):
+def _get_optimize(im: Image.Image, info: dict[str, Any]) -> list[int] | None:
     """
     Palette optimization is a potentially expensive operation.
 
@@ -805,7 +935,7 @@ def _get_optimize(im, info):
     :param info: encoderinfo
     :returns: list of indexes of palette entries in use, or None
     """
-    if im.mode in ("P", "L") and info and info.get("optimize", 0):
+    if im.mode in ("P", "L") and info and info.get("optimize"):
         # Potentially expensive operation.
 
         # The palette saves 3 bytes per color not used, but palette
@@ -827,6 +957,7 @@ def _get_optimize(im, info):
             if optimise or max(used_palette_colors) >= len(used_palette_colors):
                 return used_palette_colors
 
+            assert im.palette is not None
             num_palette_colors = len(im.palette.palette) // Image.getmodebands(
                 im.palette.mode
             )
@@ -838,9 +969,10 @@ def _get_optimize(im, info):
                 and current_palette_size > 2
             ):
                 return used_palette_colors
+    return None
 
 
-def _get_color_table_size(palette_bytes):
+def _get_color_table_size(palette_bytes: bytes) -> int:
     # calculate the palette size for the header
     if not palette_bytes:
         return 0
@@ -850,7 +982,7 @@ def _get_color_table_size(palette_bytes):
         return math.ceil(math.log(len(palette_bytes) // 3, 2)) - 1
 
 
-def _get_header_palette(palette_bytes):
+def _get_header_palette(palette_bytes: bytes) -> bytes:
     """
     Returns the palette, null padded to the next power of 2 (*3) bytes
     suitable for direct inclusion in the GIF header
@@ -868,23 +1000,33 @@ def _get_header_palette(palette_bytes):
     return palette_bytes
 
 
-def _get_palette_bytes(im):
+def _get_palette_bytes(im: Image.Image) -> bytes:
     """
     Gets the palette for inclusion in the gif header
 
     :param im: Image object
     :returns: Bytes, len<=768 suitable for inclusion in gif header
     """
-    return im.palette.palette if im.palette else b""
+    if not im.palette:
+        return b""
+
+    palette = bytes(im.palette.palette)
+    if im.palette.mode == "RGBA":
+        palette = b"".join(palette[i * 4 : i * 4 + 3] for i in range(len(palette) // 3))
+    return palette
 
 
-def _get_background(im, info_background):
+def _get_background(
+    im: Image.Image,
+    info_background: int | tuple[int, int, int] | tuple[int, int, int, int] | None,
+) -> int:
     background = 0
     if info_background:
         if isinstance(info_background, tuple):
             # WebPImagePlugin stores an RGBA value in info["background"]
             # So it must be converted to the same format as GifImagePlugin's
             # info["background"] - a global color table index
+            assert im.palette is not None
             try:
                 background = im.palette.getcolor(info_background, im)
             except ValueError as e:
@@ -901,7 +1043,7 @@ def _get_background(im, info_background):
     return background
 
 
-def _get_global_header(im, info):
+def _get_global_header(im: Image.Image, info: dict[str, Any]) -> list[bytes]:
     """Return a list of strings representing a GIF header"""
 
     # Header Block
@@ -963,7 +1105,12 @@ def _get_global_header(im, info):
     return header
 
 
-def _write_frame_data(fp, im_frame, offset, params):
+def _write_frame_data(
+    fp: IO[bytes],
+    im_frame: Image.Image,
+    offset: tuple[int, int],
+    params: dict[str, Any],
+) -> None:
     try:
         im_frame.encoderinfo = params
 
@@ -971,7 +1118,9 @@ def _write_frame_data(fp, im_frame, offset, params):
         _write_local_header(fp, im_frame, offset, 0)
 
         ImageFile._save(
-            im_frame, fp, [("gif", (0, 0) + im_frame.size, 0, RAWMODE[im_frame.mode])]
+            im_frame,
+            fp,
+            [ImageFile._Tile("gif", (0, 0) + im_frame.size, 0, RAWMODE[im_frame.mode])],
         )
 
         fp.write(b"\0")  # end of image data
@@ -983,7 +1132,9 @@ def _write_frame_data(fp, im_frame, offset, params):
 # Legacy GIF utilities
 
 
-def getheader(im, palette=None, info=None):
+def getheader(
+    im: Image.Image, palette: _Palette | None = None, info: dict[str, Any] | None = None
+) -> tuple[list[bytes], list[int] | None]:
     """
     Legacy Method to get Gif data from image.
 
@@ -995,11 +1146,11 @@ def getheader(im, palette=None, info=None):
     :returns: tuple of(list of header items, optimized palette)
 
     """
-    used_palette_colors = _get_optimize(im, info)
-
     if info is None:
         info = {}
 
+    used_palette_colors = _get_optimize(im, info)
+
     if "background" not in info and "background" in im.info:
         info["background"] = im.info["background"]
 
@@ -1011,7 +1162,9 @@ def getheader(im, palette=None, info=None):
     return header, used_palette_colors
 
 
-def getdata(im, offset=(0, 0), **params):
+def getdata(
+    im: Image.Image, offset: tuple[int, int] = (0, 0), **params: Any
+) -> list[bytes]:
     """
     Legacy Method
 
@@ -1028,12 +1181,14 @@ def getdata(im, offset=(0, 0), **params):
     :returns: List of bytes containing GIF encoded frame data
 
     """
+    from io import BytesIO
 
-    class Collector:
+    class Collector(BytesIO):
         data = []
 
-        def write(self, data):
+        def write(self, data: Buffer) -> int:
             self.data.append(data)
+            return len(data)
 
     im.load()  # make sure raster data is available
 

Backend/venv/lib/python3.12/site-packages/PIL/GimpGradientFile.py

@@ -18,17 +18,22 @@ Stuff to translate curve segments to palette values (derived from
 the corresponding code in GIMP, written by Federico Mena Quintero.
 See the GIMP distribution for more information.)
 """
-
+from __future__ import annotations
 
 from math import log, pi, sin, sqrt
 
 from ._binary import o8
 
+TYPE_CHECKING = False
+if TYPE_CHECKING:
+    from collections.abc import Callable
+    from typing import IO
+
 EPSILON = 1e-10
 """"""  # Enable auto-doc for data member
 
 
-def linear(middle, pos):
+def linear(middle: float, pos: float) -> float:
     if pos <= middle:
         if middle < EPSILON:
             return 0.0
@@ -43,19 +48,19 @@ def linear(middle, pos):
             return 0.5 + 0.5 * pos / middle
 
 
-def curved(middle, pos):
+def curved(middle: float, pos: float) -> float:
     return pos ** (log(0.5) / log(max(middle, EPSILON)))
 
 
-def sine(middle, pos):
+def sine(middle: float, pos: float) -> float:
     return (sin((-pi / 2.0) + pi * linear(middle, pos)) + 1.0) / 2.0
 
 
-def sphere_increasing(middle, pos):
+def sphere_increasing(middle: float, pos: float) -> float:
     return sqrt(1.0 - (linear(middle, pos) - 1.0) ** 2)
 
 
-def sphere_decreasing(middle, pos):
+def sphere_decreasing(middle: float, pos: float) -> float:
     return 1.0 - sqrt(1.0 - linear(middle, pos) ** 2)
 
 
@@ -64,9 +69,22 @@ SEGMENTS = [linear, curved, sine, sphere_increasing, sphere_decreasing]
 
 
 class GradientFile:
-    gradient = None
+    gradient: (
+        list[
+            tuple[
+                float,
+                float,
+                float,
+                list[float],
+                list[float],
+                Callable[[float, float], float],
+            ]
+        ]
+        | None
+    ) = None
 
-    def getpalette(self, entries=256):
+    def getpalette(self, entries: int = 256) -> tuple[bytes, str]:
+        assert self.gradient is not None
         palette = []
 
         ix = 0
@@ -101,8 +119,8 @@ class GradientFile:
 class GimpGradientFile(GradientFile):
     """File handler for GIMP's gradient format."""
 
-    def __init__(self, fp):
+    def __init__(self, fp: IO[bytes]) -> None:
-        if fp.readline()[:13] != b"GIMP Gradient":
+        if not fp.readline().startswith(b"GIMP Gradient"):
             msg = "not a GIMP gradient file"
             raise SyntaxError(msg)
 
@@ -114,7 +132,7 @@ class GimpGradientFile(GradientFile):
 
         count = int(line)
 
-        gradient = []
+        self.gradient = []
 
         for i in range(count):
             s = fp.readline().split()
@@ -132,6 +150,4 @@ class GimpGradientFile(GradientFile):
                 msg = "cannot handle HSV colour space"
                 raise OSError(msg)
 
-            gradient.append((x0, x1, xm, rgb0, rgb1, segment))
+            self.gradient.append((x0, x1, xm, rgb0, rgb1, segment))
-
-        self.gradient = gradient

Backend/venv/lib/python3.12/site-packages/PIL/GimpPaletteFile.py

@@ -13,10 +13,14 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
 
 import re
+from io import BytesIO
 
-from ._binary import o8
+TYPE_CHECKING = False
+if TYPE_CHECKING:
+    from typing import IO
 
 
 class GimpPaletteFile:
@@ -24,14 +28,18 @@ class GimpPaletteFile:
 
     rawmode = "RGB"
 
-    def __init__(self, fp):
+    def _read(self, fp: IO[bytes], limit: bool = True) -> None:
-        self.palette = [o8(i) * 3 for i in range(256)]
+        if not fp.readline().startswith(b"GIMP Palette"):
-
-        if fp.readline()[:12] != b"GIMP Palette":
             msg = "not a GIMP palette file"
             raise SyntaxError(msg)
 
-        for i in range(256):
+        palette: list[int] = []
+        i = 0
+        while True:
+            if limit and i == 256 + 3:
+                break
+
+            i += 1
             s = fp.readline()
             if not s:
                 break
@@ -39,18 +47,29 @@ class GimpPaletteFile:
             # skip fields and comment lines
             if re.match(rb"\w+:|#", s):
                 continue
-            if len(s) > 100:
+            if limit and len(s) > 100:
                 msg = "bad palette file"
                 raise SyntaxError(msg)
 
-            v = tuple(map(int, s.split()[:3]))
+            v = s.split(maxsplit=3)
-            if len(v) != 3:
+            if len(v) < 3:
                 msg = "bad palette entry"
                 raise ValueError(msg)
 
-            self.palette[i] = o8(v[0]) + o8(v[1]) + o8(v[2])
+            palette += (int(v[i]) for i in range(3))
+            if limit and len(palette) == 768:
+                break
 
-        self.palette = b"".join(self.palette)
+        self.palette = bytes(palette)
 
-    def getpalette(self):
+    def __init__(self, fp: IO[bytes]) -> None:
+        self._read(fp)
+
+    @classmethod
+    def frombytes(cls, data: bytes) -> GimpPaletteFile:
+        self = cls.__new__(cls)
+        self._read(BytesIO(data), False)
+        return self
+
+    def getpalette(self) -> tuple[bytes, str]:
         return self.palette, self.rawmode

Backend/venv/lib/python3.12/site-packages/PIL/GribStubImagePlugin.py

@@ -8,13 +8,17 @@
 #
 # See the README file for information on usage and redistribution.
 #
+from __future__ import annotations
+
+import os
+from typing import IO
 
 from . import Image, ImageFile
 
 _handler = None
 
 
-def register_handler(handler):
+def register_handler(handler: ImageFile.StubHandler | None) -> None:
     """
     Install application-specific GRIB image handler.
 
@@ -28,22 +32,20 @@ def register_handler(handler):
 # Image adapter
 
 
-def _accept(prefix):
+def _accept(prefix: bytes) -> bool:
-    return prefix[:4] == b"GRIB" and prefix[7] == 1
+    return len(prefix) >= 8 and prefix.startswith(b"GRIB") and prefix[7] == 1
 
 
 class GribStubImageFile(ImageFile.StubImageFile):
     format = "GRIB"
     format_description = "GRIB"
 
-    def _open(self):
+    def _open(self) -> None:
-        offset = self.fp.tell()
-
         if not _accept(self.fp.read(8)):
             msg = "Not a GRIB file"
             raise SyntaxError(msg)
 
-        self.fp.seek(offset)
+        self.fp.seek(-8, os.SEEK_CUR)
 
         # make something up
         self._mode = "F"
@@ -53,11 +55,11 @@ class GribStubImageFile(ImageFile.StubImageFile):
         if loader:
             loader.open(self)
 
-    def _load(self):
+    def _load(self) -> ImageFile.StubHandler | None:
         return _handler
 
 
-def _save(im, fp, filename):
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     if _handler is None or not hasattr(_handler, "save"):
         msg = "GRIB save handler not installed"
         raise OSError(msg)