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feat: Support pgAdmin OAuth tokens for PostgreSQL authentication - #10585
simonj1337 wants to merge 9 commits into
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WalkthroughAdds direct and exchange OAuth token modes for PostgreSQL connections. The changes cover server configuration, session token retrieval and exchange, libpq bearer-token integration, connection lifecycle handling, tests, and documentation. ChangesPostgreSQL OAuth Connection Flow
Priority: ➖ Normal Estimated code review effort: 4 (Complex) | ~60 minutes Change: Feature Sequence Diagram(s)sequenceDiagram
participant ServerNodeConnect
participant PsycopgConnection
participant OAuthTokenProvider
participant OIDCProvider
participant libpq
participant PostgreSQL
ServerNodeConnect->>PsycopgConnection: Start database connection
PsycopgConnection->>OAuthTokenProvider: Request token for configured mode
alt Exchange mode
OAuthTokenProvider->>OIDCProvider: Exchange pgAdmin login access token
OIDCProvider-->>OAuthTokenProvider: Return Bearer token
else Direct mode
OAuthTokenProvider-->>PsycopgConnection: Return pgAdmin login access token
end
OAuthTokenProvider-->>PsycopgConnection: Supply selected token
PsycopgConnection->>libpq: Connect with token context
libpq->>PostgreSQL: Send OAuth bearer token
Suggested reviewers: Merge Risk: ⚪ Minimal · up to
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| Check name | Status | Explanation | Resolution |
|---|---|---|---|
| Docstring Coverage |  |
Docstring coverage is 26.24% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 141 functions across 10 files. (2 skipped… | Write docstrings for the functions missing them to satisfy the coverage threshold. |
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Check name Status Explanation Description Check Check skipped - CodeRabbit’s high-level summary is enabled. Title check The title clearly and concisely describes the main change: adding support for pgAdmin OAuth tokens for PostgreSQL authentication. Linked Issues check Check skipped because no linked issues were found for this pull request. Out of Scope Changes check Check skipped because no linked issues were found for this pull request.
Full details: Docstring Coverage
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Explanation
Docstring coverage is 26.24% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 141 functions across 10 files. (2 skipped: 2 unsupported.)
Resolution
Write docstrings for the functions missing them to satisfy the coverage threshold.
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Actionable comments posted: 1
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Inline comments:
Review comments at @web/pgadmin/browser/server_groups/servers/__init__.py:
- Around line 1747-1752: Update the shared-server connection property handling
used by `manager.connection_params` so `oauth_pgadmin_token_mode` is treated as
a per-user sensitive setting. Ensure each user’s override is honored and
defaults to disabled, rather than inheriting the server owner’s mode in the
`use_pgadmin_oauth` decision.
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📒 Files selected for processing: 11
docs/en_US/oauth2.rstdocs/en_US/server_dialog.rstweb/pgadmin/authenticate/oauth2.pyweb/pgadmin/browser/server_groups/servers/__init__.pyweb/pgadmin/browser/server_groups/servers/static/js/server.ui.jsweb/pgadmin/browser/server_groups/servers/tests/test_check_ssh_mock_connect.pyweb/pgadmin/utils/driver/psycopg3/connection.pyweb/pgadmin/utils/driver/psycopg3/server_manager.pyweb/pgadmin/utils/driver/psycopg3/tests/test_connection_oauth.pyweb/pgadmin/utils/pg_oauth2.pyweb/pgadmin/utils/tests/test_pg_oauth2.py
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Thanks for this; it's clearly been put together with care. The ctypes PGoauthBearerRequest layout and hook signatures match the PG18 libpq-fe.h, token values are kept out of logs and error messages, and the docs are thorough. There are a few things that need addressing before it can go in, though:
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Most of the new tests never run.
test_pg_oauth2.pyandtest_connection_oauth.pysubclass plainunittest.TestCase, butruntests.pyonly collectsBaseTestGeneratorsubclasses, so CI runs none of those 70 tests. Run by hand, three fail:test_connection_oauth.py:542and:664mock_decrypt_passwordas(False, None, None), whichreset()treats as a decryption failure and returns early. The mock should return(True, '', None), and both files should move ontoBaseTestGenerator(the RDS tests show how to skip the server setup with_SkipServerSetUpMixin). -
Shared servers. I agree with CodeRabbit's comment: the owner's
oauth_pgadmin_token_modeapplies to every user of a shared server, so each of them forwards their own login token to a host they didn't choose, with no way to opt out. Adding the key toSENSITIVE_CONN_KEYSfixes that. -
SSH tunnel left running. The
OAuthTokenErrorbranch inconnect()(connection.py:644) returns without callingmanager.stop_ssh_tunnel(), unlike thepsycopg.Errorpath just below it. -
Issuer not checked in direct mode. The docs say
oauth_issuermust match the issuer used for the pgAdmin login token, but nothing enforces it. libpq only checks the database server's advertised issuer againstoauth_issuer, so a server configured with a different issuer still receives the pgAdmin token. Please refuse to supply the token unlessoauth_issuermatches theissuerin the login provider's metadata. -
Token exchange needs client authentication and an audience. As written, the exchange request is unauthenticated and uses the cluster's
client_id, which means the identity provider has to allow token exchange from a public client; once that's allowed, anyone holding a user's access token can make the same request. With noaudienceorresource, whether the result is actually restricted to the database depends entirely on IdP configuration, which the docs themselves acknowledge. Since limiting reuse is the whole point of exchange mode, please authenticate the request with pgAdmin's own client credentials (which the login client already holds) and name the target withaudience, either fromoauth_client_idor a separate parameter if providers differ on what it should be.
…com/simonj1337/pgadmin4 into feature/pgadmin-oauth-postgres-auth
…com/simonj1337/pgadmin4 into feature/pgadmin-oauth-postgres-auth
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Summary
Adds PostgreSQL 18 OAuth authentication using the current pgAdmin login access token.
The new OAuth pgAdmin token mode connection parameter supports:
disabled— Default; do not supply the pgAdmin login token.direct— Forward the login access token to PostgreSQL. Use only with trusted database servers.exchange— Exchange the login access token before connecting. The OIDC provider must issue the intended database audience and permissions.Both enabled modes require
oauth_client_idandoauth_issuer. Exchange supports configuredoauth_scope, requires verified HTTPS, and never falls back to direct mode.The implementation includes token refresh, synchronous and asynchronous connections, resets, query cancellation, and preservation of SSH credential prompts. Documentation and unit/regression tests are included.
I manually tested direct mode and token exchange, including with the pgAdmin Alpine Docker image.
A minimal Keycloak/PostgreSQL 18 example for direct mode is available here:
https://github.com/simonj1337/pgadmin4-local-oidc-test
Limitations
Token retrieval requires an authenticated pgAdmin request. Autonomous background reconnects are unsupported.
Requires libpq 18.x. Supports Psycopg’s
pythonimplementation. Thecimplementation is also supported, but only on Linux. Thebinaryimplementation is rejected. Thecimplementation library discovery is conservative but (unfortunately) does not prove Psycopg’s exact library binding.This ctypes adapter is temporary, pending native OAuth hook support in the Psycopg version supported by pgAdmin:
psycopg/psycopg#1190
Related issues:
Summary by CodeRabbit
New Features
Bug Fixes