JamesBhattarai
a0d4e59c24
feat: add password reset and email verification flow feat: add org invite listing, cancellation, and invite link fallback feat: add user suspend/unsuspend with audit logging feat: add department certificate policy (expiry, extensions) feat: enforce dept cert policy on SSH certificate signing feat: wire up OIDC consent and token flow (replace mocks) feat: rework CLI auth bridge to use frontend login flow feat: add admin OAuth provider management (CRUD) chore: refactor model import paths after module reorganisation chore: clean up config, decorators, and dev tooling
594 lines
23 KiB
Python
594 lines
23 KiB
Python
"""OIDC Token Service for JWT token generation and validation."""
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import hashlib
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import base64
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import secrets
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import logging
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import time
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from datetime import datetime, timedelta, timezone
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from typing import Dict, Optional, Any
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import jwt
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from flask import current_app, g
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from gatehouse_app.models import User, OIDCClient
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from gatehouse_app.models.organization.organization_member import OrganizationMember
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from gatehouse_app.services.oidc_jwks_service import OIDCJWKSService
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logger = logging.getLogger(__name__)
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class OIDCTokenService:
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"""Service for generating and validating OIDC tokens.
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This service handles:
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- Access token creation (JWT)
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- ID token creation (JWT)
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- Refresh token creation (opaque)
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- Token signature verification
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- Hash generation for PKCE claims (at_hash, c_hash)
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"""
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@staticmethod
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def _generate_jti() -> str:
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"""Generate a unique JWT ID."""
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return secrets.token_urlsafe(32)
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@staticmethod
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def _generate_opaque_token(length: int = 43) -> str:
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"""Generate an opaque token (for refresh tokens).
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Args:
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length: Length of the token
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Returns:
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URL-safe base64 encoded token
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"""
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return secrets.token_urlsafe(length)
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@staticmethod
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def _hash_token(token: str) -> str:
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"""Hash a token for secure storage.
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Args:
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token: Token to hash
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Returns:
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SHA256 hash of the token
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"""
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return hashlib.sha256(token.encode()).hexdigest()
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@staticmethod
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def _base64url_encode(data: bytes) -> str:
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"""Encode bytes to base64url format without padding.
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Args:
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data: Bytes to encode
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Returns:
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Base64url encoded string
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"""
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return base64.urlsafe_b64encode(data).decode().rstrip("=")
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@staticmethod
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def create_at_hash(access_token: str) -> str:
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"""Create the at_hash claim for ID token.
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Implements OIDC spec for access token hash generation.
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Hash is the left-most half of the hash of the ASCII representation
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of the access token.
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Args:
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access_token: The access token string
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Returns:
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Base64url encoded hash
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"""
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# Hash the access token using SHA256
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hash_digest = hashlib.sha256(access_token.encode()).digest()
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# Take left-most half of the hash
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half_length = len(hash_digest) // 2
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left_half = hash_digest[:half_length]
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# Base64url encode
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return OIDCTokenService._base64url_encode(left_half)
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@staticmethod
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def create_c_hash(code: str) -> str:
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"""Create the c_hash claim for ID token.
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Implements OIDC spec for authorization code hash generation.
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Args:
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code: The authorization code string
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Returns:
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Base64url encoded hash
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"""
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# Hash the code using SHA256
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hash_digest = hashlib.sha256(code.encode()).digest()
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# Take left-most half of the hash
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half_length = len(hash_digest) // 2
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left_half = hash_digest[:half_length]
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# Base64url encode
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return OIDCTokenService._base64url_encode(left_half)
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@staticmethod
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def _get_issuer() -> str:
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"""Get the OIDC issuer URL."""
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return current_app.config.get("OIDC_ISSUER_URL", "http://localhost:5000")
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@staticmethod
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def _get_token_lifetime(client: OIDCClient, token_type: str) -> int:
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"""Get the token lifetime in seconds for a client.
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Args:
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client: OIDCClient instance
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token_type: Type of token ("access_token", "refresh_token", "id_token")
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Returns:
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Lifetime in seconds
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"""
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lifetimes = {
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"access_token": client.access_token_lifetime or 3600,
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"refresh_token": client.refresh_token_lifetime or 2592000,
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"id_token": client.id_token_lifetime or 3600,
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}
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return lifetimes.get(token_type, 3600)
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@classmethod
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def create_access_token(cls, client_id: str, user_id: str, scope: list,
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jti: str = None) -> str:
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"""Create a JWT access token.
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Args:
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client_id: The OIDC client ID
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user_id: The user ID (subject)
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scope: List of granted scopes
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jti: Optional JWT ID (generated if not provided)
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Returns:
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JWT access token string
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"""
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logger.debug("[OIDC TOKEN SERVICE] ===========================================")
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logger.debug("[OIDC TOKEN SERVICE] create_access_token called")
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logger.debug("[OIDC TOKEN SERVICE] Current UTC time: %s", datetime.now(timezone.utc).isoformat())
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logger.debug("[OIDC TOKEN SERVICE] client_id=%s, user_id=%s", client_id, user_id)
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logger.debug("[OIDC TOKEN SERVICE] scope=%s", scope)
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jti = jti or cls._generate_jti()
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now_timestamp = int(time.time())
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now = datetime.now(timezone.utc)
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logger.debug("[OIDC TOKEN SERVICE] Token creation time (UTC): %s", now.isoformat())
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logger.debug("[OIDC TOKEN SERVICE] Token creation timestamp: %s", now_timestamp)
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# Get client for token lifetime
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client = OIDCClient.query.filter_by(client_id=client_id).first()
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lifetime = cls._get_token_lifetime(client, "access_token") if client else 3600
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logger.debug("[OIDC TOKEN SERVICE] Access token lifetime (seconds): %s", lifetime)
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exp_timestamp = now_timestamp + lifetime
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exp_time = now + timedelta(seconds=lifetime)
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logger.debug("[OIDC TOKEN SERVICE] Access token expiration time (UTC): %s", exp_time.isoformat())
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logger.debug("[OIDC TOKEN SERVICE] Access token expiration timestamp: %s", exp_timestamp)
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logger.debug("[OIDC TOKEN SERVICE] Time until expiration (seconds): %s", lifetime)
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claims = {
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"iss": cls._get_issuer(),
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"sub": user_id,
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"aud": client_id,
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"exp": exp_timestamp,
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"iat": now_timestamp,
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"nbf": now_timestamp,
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"jti": jti,
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"client_id": client_id,
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"scope": " ".join(scope) if isinstance(scope, list) else scope,
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}
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logger.debug("[OIDC TOKEN SERVICE] Token claims: exp=%s, iat=%s, nbf=%s",
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claims["exp"], claims["iat"], claims["nbf"])
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# Get signing key
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jwks_service = OIDCJWKSService()
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signing_key = jwks_service.get_signing_key()
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if not signing_key:
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raise ValueError("No signing key available")
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# Sign with RS256
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logger.debug("[OIDC TOKEN SERVICE] Signing token with RS256...")
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token = jwt.encode(
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claims,
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signing_key.private_key,
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algorithm="RS256",
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headers={"kid": signing_key.kid}
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)
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logger.debug("[OIDC TOKEN SERVICE] Access token created successfully")
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logger.debug("[OIDC TOKEN SERVICE] Final UTC time: %s", datetime.now(timezone.utc).isoformat())
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logger.debug("[OIDC TOKEN SERVICE] ===========================================")
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return token
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@classmethod
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def create_id_token(cls, client_id: str, user_id: str, nonce: str = None,
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scope: list = None, access_token: str = None,
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auth_time: int = None) -> str:
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"""Create a JWT ID token.
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Args:
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client_id: The OIDC client ID
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user_id: The user ID (subject)
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nonce: Nonce for replay protection
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scope: Requested/Granted scopes
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access_token: Associated access token (for at_hash)
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auth_time: Authentication time (Unix timestamp)
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Returns:
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JWT ID token string
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"""
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logger.debug("[OIDC TOKEN SERVICE] ===========================================")
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logger.debug("[OIDC TOKEN SERVICE] create_id_token called")
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logger.debug("[OIDC TOKEN SERVICE] Current UTC time: %s", datetime.now(timezone.utc).isoformat())
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logger.debug("[OIDC TOKEN SERVICE] client_id=%s, user_id=%s", client_id, user_id)
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logger.debug("[OIDC TOKEN SERVICE] nonce=%s, auth_time=%s", nonce, auth_time)
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logger.debug("[OIDC TOKEN SERVICE] scope=%s", scope)
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now_timestamp = int(time.time())
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now = datetime.now(timezone.utc)
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logger.debug("[OIDC TOKEN SERVICE] Token creation time (UTC): %s", now.isoformat())
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logger.debug("[OIDC TOKEN SERVICE] Token creation timestamp: %s", now_timestamp)
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auth_time = auth_time or now_timestamp
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logger.debug("[OIDC TOKEN SERVICE] auth_time (Unix timestamp): %s", auth_time)
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# Get client for token lifetime
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client = OIDCClient.query.filter_by(client_id=client_id).first()
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lifetime = cls._get_token_lifetime(client, "id_token") if client else 3600
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logger.debug("[OIDC TOKEN SERVICE] ID token lifetime (seconds): %s", lifetime)
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exp_timestamp = now_timestamp + lifetime
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exp_time = now + timedelta(seconds=lifetime)
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logger.debug("[OIDC TOKEN SERVICE] ID token expiration time (UTC): %s", exp_time.isoformat())
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logger.debug("[OIDC TOKEN SERVICE] ID token expiration timestamp: %s", exp_timestamp)
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logger.debug("[OIDC TOKEN SERVICE] Time until expiration (seconds): %s", lifetime)
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# Get user for claims
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user = User.query.get(user_id)
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claims = {
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"iss": cls._get_issuer(),
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"sub": user_id,
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"aud": client_id,
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"exp": exp_timestamp,
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"iat": now_timestamp,
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"auth_time": auth_time,
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}
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logger.debug("[OIDC TOKEN SERVICE] Token claims: exp=%s, iat=%s, auth_time=%s",
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claims["exp"], claims["iat"], claims["auth_time"])
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# Add nonce if provided
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if nonce:
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claims["nonce"] = nonce
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# Add at_hash if access token provided
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if access_token:
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claims["at_hash"] = cls.create_at_hash(access_token)
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# Add standard claims if user exists
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if user:
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if user.email:
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claims["email"] = user.email
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claims["email_verified"] = user.email_verified
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if user.full_name:
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claims["name"] = user.full_name
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# Add roles claim if scope is granted
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if scope and "roles" in scope:
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claims["roles"] = cls._get_user_roles(user)
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# Add scope if provided
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if scope:
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claims["scope"] = " ".join(scope) if isinstance(scope, list) else scope
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# Get signing key
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jwks_service = OIDCJWKSService()
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signing_key = jwks_service.get_signing_key()
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if not signing_key:
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raise ValueError("No signing key available")
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# Sign with RS256
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logger.debug("[OIDC TOKEN SERVICE] Signing token with RS256...")
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token = jwt.encode(
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claims,
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signing_key.private_key,
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algorithm="RS256",
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headers={"kid": signing_key.kid}
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)
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logger.debug("[OIDC TOKEN SERVICE] ID token created successfully")
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logger.debug("[OIDC TOKEN SERVICE] Final UTC time: %s", datetime.now(timezone.utc).isoformat())
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logger.debug("[OIDC TOKEN SERVICE] ===========================================")
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return token
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@staticmethod
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def _get_user_roles(user: User) -> list:
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"""Get user's organization roles.
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Args:
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user: User instance
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Returns:
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List of role objects with organization_id and role
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"""
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roles = []
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if user and user.organization_memberships:
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for member in user.organization_memberships:
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roles.append({
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"organization_id": str(member.organization_id),
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"role": member.role.value
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})
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return roles
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@classmethod
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def create_refresh_token(cls, client_id: str, user_id: str,
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scope: list = None, access_token_id: str = None) -> str:
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"""Create an opaque refresh token.
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Args:
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client_id: The OIDC client ID
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user_id: The user ID
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scope: List of granted scopes
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access_token_id: Associated access token ID
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Returns:
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Opaque refresh token string
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"""
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logger.debug("[OIDC TOKEN SERVICE] ===========================================")
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logger.debug("[OIDC TOKEN SERVICE] create_refresh_token called")
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logger.debug("[OIDC TOKEN SERVICE] Current UTC time: %s", datetime.now(timezone.utc).isoformat())
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logger.debug("[OIDC TOKEN SERVICE] client_id=%s, user_id=%s", client_id, user_id)
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logger.debug("[OIDC TOKEN SERVICE] scope=%s, access_token_id=%s", scope, access_token_id)
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token = cls._generate_opaque_token()
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logger.debug("[OIDC TOKEN SERVICE] Refresh token generated: %s...", token[:20] if token else None)
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# Hash for storage
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token_hash = cls._hash_token(token)
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logger.debug("[OIDC TOKEN SERVICE] Refresh token created successfully")
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logger.debug("[OIDC TOKEN SERVICE] Final UTC time: %s", datetime.now(timezone.utc).isoformat())
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logger.debug("[OIDC TOKEN SERVICE] ===========================================")
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return token, token_hash
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@classmethod
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def verify_token_signature(cls, token: str) -> Dict:
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"""Verify the signature of a JWT token.
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Args:
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token: JWT token string
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Returns:
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Decoded token claims
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Raises:
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jwt.InvalidSignatureError: If signature verification fails
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jwt.ExpiredSignatureError: If token is expired
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jwt.InvalidTokenError: If token is invalid
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"""
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logger.debug("[OIDC TOKEN SERVICE] ===========================================")
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logger.debug("[OIDC TOKEN SERVICE] verify_token_signature() called")
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logger.debug("[OIDC TOKEN SERVICE] Token (first 50 chars): %s...", token[:50] if len(token) > 50 else token)
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logger.debug("[OIDC TOKEN SERVICE] Token length: %d", len(token))
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# Get the JWKS with public keys
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logger.debug("[OIDC TOKEN SERVICE] Getting JWKS...")
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jwks_service = OIDCJWKSService()
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jwks = jwks_service.get_jwks(include_private_keys=True)
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logger.debug("[OIDC TOKEN SERVICE] JWKS retrieved: %d keys", len(jwks.get("keys", [])))
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# Get the key ID from token header
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try:
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logger.debug("[OIDC TOKEN SERVICE] Getting unverified token header...")
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unverified_header = jwt.get_unverified_header(token)
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logger.debug("[OIDC TOKEN SERVICE] Unverified header: %s", unverified_header)
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except jwt.DecodeError as e:
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logger.error("[OIDC TOKEN SERVICE] Failed to decode token header: %s", str(e))
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raise jwt.InvalidTokenError("Invalid token header")
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kid = unverified_header.get("kid")
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logger.debug("[OIDC TOKEN SERVICE] Key ID (kid) from token header: %s", kid)
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# Find the matching public key
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logger.debug("[OIDC TOKEN SERVICE] Searching for matching public key...")
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public_key = None
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for idx, key in enumerate(jwks.get("keys", [])):
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logger.debug("[OIDC TOKEN SERVICE] Checking key %d: kid=%s", idx, key.get("kid"))
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if key.get("kid") == kid:
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logger.debug("[OIDC TOKEN SERVICE] Found matching key at index %d", idx)
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try:
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from cryptography.hazmat.primitives import serialization
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from cryptography.hazmat.backends import default_backend
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logger.debug("[OIDC TOKEN SERVICE] Loading PEM public key...")
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public_key = serialization.load_pem_public_key(
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key["public_key"].encode() if isinstance(key["public_key"], str)
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else key["public_key"],
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backend=default_backend()
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)
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logger.debug("[OIDC TOKEN SERVICE] Public key loaded successfully")
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break
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except (ImportError, Exception) as e:
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logger.error("[OIDC TOKEN SERVICE] Failed to load public key: %s: %s", type(e).__name__, str(e))
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continue
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if not public_key:
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logger.error("[OIDC TOKEN SERVICE] No matching public key found for kid=%s", kid)
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raise jwt.InvalidSignatureError(f"Key with kid={kid} not found")
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logger.debug("[OIDC TOKEN SERVICE] Public key found, verifying signature...")
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# Verify the signature
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try:
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claims = jwt.decode(
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token,
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public_key,
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algorithms=["RS256"],
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audience=None, # We'll validate audience separately
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issuer=cls._get_issuer(),
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options={
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"verify_signature": True,
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"verify_exp": True,
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"verify_aud": False, # Handle audience manually
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"verify_iss": False, # Handle issuer manually
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}
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)
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logger.debug("[OIDC TOKEN SERVICE] Signature verification successful")
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logger.debug("[OIDC TOKEN SERVICE] Decoded claims: %s", claims)
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logger.debug("[OIDC TOKEN SERVICE] ===========================================")
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return claims
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except jwt.ExpiredSignatureError as e:
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logger.error("[OIDC TOKEN SERVICE] Token has expired: %s", str(e))
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raise
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except jwt.InvalidSignatureError as e:
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logger.error("[OIDC TOKEN SERVICE] Invalid token signature: %s", str(e))
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raise
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except jwt.InvalidTokenError as e:
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logger.error("[OIDC TOKEN SERVICE] Invalid token: %s: %s", type(e).__name__, str(e))
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raise
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except Exception as e:
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logger.error("[OIDC TOKEN SERVICE] Unexpected error during token verification: %s: %s", type(e).__name__, str(e))
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import traceback
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logger.error("[OIDC TOKEN SERVICE] Traceback: %s", traceback.format_exc())
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raise
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@classmethod
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def decode_token(cls, token: str, verify: bool = False) -> Dict:
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"""Decode a JWT token without verification (for debugging).
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Args:
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token: JWT token string
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verify: Whether to verify signature
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Returns:
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Decoded token claims
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"""
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if verify:
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return cls.verify_token_signature(token)
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return jwt.decode(
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token,
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options={
|
|
"verify_signature": False,
|
|
"verify_exp": False,
|
|
}
|
|
)
|
|
|
|
@classmethod
|
|
def validate_access_token(cls, token: str, client_id: str = None) -> Dict:
|
|
"""Validate an access token and return its claims.
|
|
|
|
Args:
|
|
token: JWT access token
|
|
client_id: Optional client ID to validate audience
|
|
|
|
Returns:
|
|
Token claims dictionary
|
|
|
|
Raises:
|
|
jwt.InvalidTokenError: If token is invalid
|
|
ValueError: If token is expired or audience mismatch
|
|
"""
|
|
logger.debug("[OIDC TOKEN SERVICE] ===========================================")
|
|
logger.debug("[OIDC TOKEN SERVICE] validate_access_token() called")
|
|
logger.debug("[OIDC TOKEN SERVICE] Token (first 50 chars): %s...", token[:50] if len(token) > 50 else token)
|
|
logger.debug("[OIDC TOKEN SERVICE] Token length: %d", len(token))
|
|
logger.debug("[OIDC TOKEN SERVICE] Client ID: %s", client_id)
|
|
|
|
# Verify token signature
|
|
logger.debug("[OIDC TOKEN SERVICE] Verifying token signature...")
|
|
claims = cls.verify_token_signature(token)
|
|
logger.debug("[OIDC TOKEN SERVICE] Token signature verified")
|
|
logger.debug("[OIDC TOKEN SERVICE] Claims: %s", claims)
|
|
|
|
# Check expiration
|
|
exp = claims.get("exp", 0)
|
|
now_timestamp = int(time.time())
|
|
|
|
if exp < now_timestamp:
|
|
logger.error("[OIDC TOKEN SERVICE] Token has expired")
|
|
raise ValueError("Token has expired")
|
|
|
|
# Validate audience if client_id provided
|
|
aud = claims.get("aud")
|
|
logger.debug("[OIDC TOKEN SERVICE] Token audience (aud): %s", aud)
|
|
logger.debug("[OIDC TOKEN SERVICE] Expected client_id: %s", client_id)
|
|
|
|
if client_id:
|
|
if aud != client_id:
|
|
logger.error("[OIDC TOKEN SERVICE] Audience mismatch: expected=%s, got=%s", client_id, aud)
|
|
raise ValueError("Invalid audience")
|
|
logger.debug("[OIDC TOKEN SERVICE] Audience validation passed")
|
|
else:
|
|
logger.debug("[OIDC TOKEN SERVICE] No client_id provided, skipping audience validation")
|
|
|
|
logger.debug("[OIDC TOKEN SERVICE] validate_access_token() completed successfully")
|
|
logger.debug("[OIDC TOKEN SERVICE] ===========================================")
|
|
|
|
return claims
|
|
|
|
@classmethod
|
|
def introspect_token(cls, token: str, client_id: str = None) -> Dict:
|
|
"""Introspect a token and return its status and claims.
|
|
|
|
Args:
|
|
token: JWT token to introspect
|
|
client_id: Client ID for audience validation
|
|
|
|
Returns:
|
|
Dictionary with active status and claims
|
|
"""
|
|
result = {
|
|
"active": False,
|
|
}
|
|
|
|
try:
|
|
claims = cls.validate_access_token(token, client_id)
|
|
|
|
# Calculate remaining time
|
|
now_timestamp = int(time.time())
|
|
now = datetime.now(timezone.utc)
|
|
exp = claims.get("exp", 0)
|
|
iat = claims.get("iat", 0)
|
|
|
|
logger.debug("[OIDC TOKEN SERVICE] Introspection - Current UTC time: %s", now.isoformat())
|
|
logger.debug("[OIDC TOKEN SERVICE] Introspection - Token expiration timestamp: %s", exp)
|
|
logger.debug("[OIDC TOKEN SERVICE] Introspection - Token expiration datetime (UTC): %s", datetime.fromtimestamp(exp, tz=timezone.utc).isoformat())
|
|
logger.debug("[OIDC TOKEN SERVICE] Introspection - Time until expiration: %s seconds", exp - now_timestamp)
|
|
|
|
result["active"] = exp > now_timestamp
|
|
result.update({
|
|
"iss": claims.get("iss"),
|
|
"sub": claims.get("sub"),
|
|
"aud": claims.get("aud"),
|
|
"exp": exp,
|
|
"iat": iat,
|
|
"nbf": claims.get("nbf"),
|
|
"jti": claims.get("jti"),
|
|
"client_id": claims.get("client_id"),
|
|
"scope": claims.get("scope"),
|
|
"token_type": "Bearer",
|
|
})
|
|
|
|
# Add expiry in seconds
|
|
if exp > now_timestamp:
|
|
result["exp"] = int(exp - now_timestamp)
|
|
|
|
except (jwt.InvalidTokenError, ValueError) as e:
|
|
result["active"] = False
|
|
result["error"] = str(e)
|
|
|
|
return result
|