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03c3b18565
Port RFC-001 authentication core from PR #1728: - JWT token handling (create_access_token, decode_token, TokenPayload) - Password hashing (bcrypt) with verify_password - SQLite UserRepository with base interface - Provider Factory pattern (LocalAuthProvider) - CLI reset_admin tool - Auth-specific errors (AuthErrorCode, TokenError, AuthErrorResponse) Deps: - bcrypt>=4.0.0 - pyjwt>=2.9.0 - email-validator>=2.0.0 - backend/uv.toml pins public PyPI index Tests: 12 pure unit tests (test_auth_config.py, test_auth_errors.py). Scope note: authz.py, test_auth.py, and test_auth_type_system.py are deferred to commit 2 because they depend on middleware and deps wiring that is not yet in place. Commit 1 stays "pure new files only" as the spec mandates.
56 lines
1.6 KiB
Python
56 lines
1.6 KiB
Python
"""JWT token creation and verification."""
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from datetime import UTC, datetime, timedelta
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import jwt
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from pydantic import BaseModel
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from app.gateway.auth.config import get_auth_config
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from app.gateway.auth.errors import TokenError
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class TokenPayload(BaseModel):
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"""JWT token payload."""
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sub: str # user_id
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exp: datetime
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iat: datetime | None = None
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ver: int = 0 # token_version — must match User.token_version
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def create_access_token(user_id: str, expires_delta: timedelta | None = None, token_version: int = 0) -> str:
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"""Create a JWT access token.
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Args:
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user_id: The user's UUID as string
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expires_delta: Optional custom expiry, defaults to 7 days
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token_version: User's current token_version for invalidation
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Returns:
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Encoded JWT string
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"""
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config = get_auth_config()
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expiry = expires_delta or timedelta(days=config.token_expiry_days)
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now = datetime.now(UTC)
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payload = {"sub": user_id, "exp": now + expiry, "iat": now, "ver": token_version}
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return jwt.encode(payload, config.jwt_secret, algorithm="HS256")
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def decode_token(token: str) -> TokenPayload | TokenError:
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"""Decode and validate a JWT token.
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Returns:
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TokenPayload if valid, or a specific TokenError variant.
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"""
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config = get_auth_config()
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try:
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payload = jwt.decode(token, config.jwt_secret, algorithms=["HS256"])
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return TokenPayload(**payload)
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except jwt.ExpiredSignatureError:
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return TokenError.EXPIRED
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except jwt.InvalidSignatureError:
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return TokenError.INVALID_SIGNATURE
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except jwt.PyJWTError:
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return TokenError.MALFORMED
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