initial commit - LeDiscord plateforme des copains

backend/utils/security.py

@@ -0,0 +1,74 @@
+from datetime import datetime, timedelta
+from typing import Optional
+from jose import JWTError, jwt
+from passlib.context import CryptContext
+from fastapi import Depends, HTTPException, status
+from fastapi.security import OAuth2PasswordBearer
+from sqlalchemy.orm import Session
+from config.settings import settings
+from config.database import get_db
+from models.user import User
+from schemas.user import TokenData
+
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/api/auth/login")
+
+def verify_password(plain_password: str, hashed_password: str) -> bool:
+    """Verify a plain password against a hashed password."""
+    return pwd_context.verify(plain_password, hashed_password)
+
+def get_password_hash(password: str) -> str:
+    """Generate a password hash."""
+    return pwd_context.hash(password)
+
+def create_access_token(data: dict, expires_delta: Optional[timedelta] = None) -> str:
+    """Create a JWT access token."""
+    to_encode = data.copy()
+    if expires_delta:
+        expire = datetime.utcnow() + expires_delta
+    else:
+        expire = datetime.utcnow() + timedelta(minutes=settings.JWT_EXPIRATION_MINUTES)
+    to_encode.update({"exp": expire})
+    encoded_jwt = jwt.encode(to_encode, settings.JWT_SECRET_KEY, algorithm=settings.JWT_ALGORITHM)
+    return encoded_jwt
+
+def verify_token(token: str, credentials_exception) -> TokenData:
+    """Verify a JWT token and return the token data."""
+    try:
+        payload = jwt.decode(token, settings.JWT_SECRET_KEY, algorithms=[settings.JWT_ALGORITHM])
+        user_id: int = payload.get("sub")
+        email: str = payload.get("email")
+        if user_id is None:
+            raise credentials_exception
+        token_data = TokenData(user_id=user_id, email=email)
+        return token_data
+    except JWTError:
+        raise credentials_exception
+
+async def get_current_user(token: str = Depends(oauth2_scheme), db: Session = Depends(get_db)) -> User:
+    """Get the current authenticated user."""
+    credentials_exception = HTTPException(
+        status_code=status.HTTP_401_UNAUTHORIZED,
+        detail="Could not validate credentials",
+        headers={"WWW-Authenticate": "Bearer"},
+    )
+    token_data = verify_token(token, credentials_exception)
+    user = db.query(User).filter(User.id == token_data.user_id).first()
+    if user is None:
+        raise credentials_exception
+    return user
+
+async def get_current_active_user(current_user: User = Depends(get_current_user)) -> User:
+    """Get the current active user."""
+    if not current_user.is_active:
+        raise HTTPException(status_code=400, detail="Inactive user")
+    return current_user
+
+async def get_admin_user(current_user: User = Depends(get_current_active_user)) -> User:
+    """Get the current admin user."""
+    if not current_user.is_admin:
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="Not enough permissions"
+        )
+    return current_user