feat(token): implement GET /token for token verification

Implements W3C IndieAuth Section 6.3 token verification endpoint.
The token endpoint now supports both:
- POST: Issue new tokens (authorization code exchange)
- GET: Verify existing tokens (resource server validation)

Changes:
- Added GET handler to /token endpoint
- Extracts Bearer token from Authorization header (RFC 6750)
- Returns JSON with me, client_id, scope
- Returns 401 with WWW-Authenticate for invalid tokens
- 11 new tests covering all verification scenarios

All 533 tests passing. Resolves critical P0 blocker for v1.0.0.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
2025-11-25 08:10:47 -07:00
parent 526a21d3fb
commit 6bb2a4033f
8 changed files with 1168 additions and 26 deletions

View File

@@ -315,3 +315,236 @@ class TestSecurityValidation:
token_metadata = test_token_service.validate_token(data["access_token"])
assert token_metadata is not None
assert token_metadata["me"] == metadata["me"]
class TestTokenVerification:
"""Tests for GET /token token verification endpoint."""
def test_verify_valid_token_success(self, client, test_token_service):
"""Test successful token verification with valid token."""
# Generate a token
token = test_token_service.generate_token(
me="https://user.example.com",
client_id="https://client.example.com",
scope=""
)
# Verify the token
response = client.get(
"/token",
headers={"Authorization": f"Bearer {token}"}
)
assert response.status_code == 200
data = response.json()
assert data["me"] == "https://user.example.com"
assert data["client_id"] == "https://client.example.com"
assert data["scope"] == ""
def test_verify_token_with_scope(self, client, test_token_service):
"""Test token verification includes scope."""
# Generate a token with scope
token = test_token_service.generate_token(
me="https://user.example.com",
client_id="https://client.example.com",
scope="create update"
)
# Verify the token
response = client.get(
"/token",
headers={"Authorization": f"Bearer {token}"}
)
assert response.status_code == 200
data = response.json()
assert data["scope"] == "create update"
def test_verify_invalid_token(self, client):
"""Test verification of invalid token returns 401."""
response = client.get(
"/token",
headers={"Authorization": "Bearer invalid_token_xyz123"}
)
assert response.status_code == 401
data = response.json()
assert data["detail"]["error"] == "invalid_token"
assert "WWW-Authenticate" in response.headers
assert response.headers["WWW-Authenticate"] == "Bearer"
def test_verify_missing_authorization_header(self, client):
"""Test verification without Authorization header returns 401."""
response = client.get("/token")
assert response.status_code == 401
data = response.json()
assert data["detail"]["error"] == "invalid_token"
assert "WWW-Authenticate" in response.headers
def test_verify_invalid_auth_scheme(self, client):
"""Test verification with non-Bearer auth scheme returns 401."""
response = client.get(
"/token",
headers={"Authorization": "Basic dXNlcjpwYXNz"}
)
assert response.status_code == 401
data = response.json()
assert data["detail"]["error"] == "invalid_token"
def test_verify_empty_token(self, client):
"""Test verification with empty token returns 401."""
response = client.get(
"/token",
headers={"Authorization": "Bearer "}
)
assert response.status_code == 401
data = response.json()
assert data["detail"]["error"] == "invalid_token"
def test_verify_case_insensitive_bearer(self, client, test_token_service):
"""Test Bearer scheme is case-insensitive per RFC 6750."""
# Generate a token
token = test_token_service.generate_token(
me="https://user.example.com",
client_id="https://client.example.com",
scope=""
)
# Test with lowercase "bearer"
response = client.get(
"/token",
headers={"Authorization": f"bearer {token}"}
)
assert response.status_code == 200
data = response.json()
assert data["me"] == "https://user.example.com"
def test_verify_expired_token(self, client, test_database):
"""Test verification of expired token returns 401."""
# Create token service with very short TTL
short_ttl_service = TokenService(
database=test_database,
token_length=32,
token_ttl=0 # Expires immediately
)
# Generate token (will be expired)
token = short_ttl_service.generate_token(
me="https://user.example.com",
client_id="https://client.example.com",
scope=""
)
# Import app to override dependency temporarily
from gondulf.dependencies import get_token_service
from gondulf.main import app
# Override with short TTL service
app.dependency_overrides[get_token_service] = lambda: short_ttl_service
try:
# Verify the token (should be expired)
response = client.get(
"/token",
headers={"Authorization": f"Bearer {token}"}
)
assert response.status_code == 401
data = response.json()
assert data["detail"]["error"] == "invalid_token"
finally:
# Clean up override
app.dependency_overrides.clear()
class TestTokenVerificationIntegration:
"""Integration tests for full token lifecycle."""
def test_full_token_lifecycle(self, client, valid_auth_code, test_token_service):
"""Test complete flow: exchange code, verify token."""
code, metadata = valid_auth_code
# Step 1: Exchange authorization code for token
exchange_response = client.post(
"/token",
data={
"grant_type": "authorization_code",
"code": code,
"client_id": metadata["client_id"],
"redirect_uri": metadata["redirect_uri"]
}
)
assert exchange_response.status_code == 200
token_data = exchange_response.json()
access_token = token_data["access_token"]
# Step 2: Verify the token
verify_response = client.get(
"/token",
headers={"Authorization": f"Bearer {access_token}"}
)
assert verify_response.status_code == 200
verify_data = verify_response.json()
assert verify_data["me"] == metadata["me"]
assert verify_data["client_id"] == metadata["client_id"]
assert verify_data["scope"] == metadata["scope"]
def test_verify_revoked_token(self, client, test_token_service):
"""Test verification of revoked token returns 401."""
# Generate a token
token = test_token_service.generate_token(
me="https://user.example.com",
client_id="https://client.example.com",
scope=""
)
# Revoke the token
revoked = test_token_service.revoke_token(token)
assert revoked is True
# Try to verify revoked token
response = client.get(
"/token",
headers={"Authorization": f"Bearer {token}"}
)
assert response.status_code == 401
data = response.json()
assert data["detail"]["error"] == "invalid_token"
def test_verify_cross_client_token(self, client, test_token_service):
"""Test token verification returns correct client_id."""
# Generate tokens for two different clients
token_a = test_token_service.generate_token(
me="https://user.example.com",
client_id="https://client-a.example.com",
scope=""
)
token_b = test_token_service.generate_token(
me="https://user.example.com",
client_id="https://client-b.example.com",
scope=""
)
# Verify token A returns client A
response_a = client.get(
"/token",
headers={"Authorization": f"Bearer {token_a}"}
)
assert response_a.status_code == 200
assert response_a.json()["client_id"] == "https://client-a.example.com"
# Verify token B returns client B
response_b = client.get(
"/token",
headers={"Authorization": f"Bearer {token_b}"}
)
assert response_b.status_code == 200
assert response_b.json()["client_id"] == "https://client-b.example.com"