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Add OIDC authentication to integration tests#75

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Add OIDC authentication to integration tests#75
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@lubomir lubomir commented Jun 3, 2026

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Add OIDC authentication to integration tests

Deploys Dex (OIDC provider) and GLAuth (LDAP) alongside CTS in the EaaS pipeline
and exercises the full mod_auth_openidcload_openidc_userget_user_info
query_ldap_groupshas_role auth stack end-to-end.

Pipeline changes (.tekton/integration-test-eaas.yaml)

  • New deploy-glauth task (runs in parallel with deploy-dex after
    provision-environment): creates a ConfigMap with a GLAuth config defining two
    users (builder / readonly) and one group (cts-builders), then deploys GLAuth
    on port 389.
  • New deploy-dex task (parallel with deploy-glauth): creates a ConfigMap
    with a Dex config using the password connector and a static OAuth2 client
    (cts-integration), then deploys Dex on port 5556.
  • Updated deploy-cts: runAfter now includes deploy-glauth and deploy-dex.
    The cts-config ConfigMap sets AUTH_BACKEND=openidc, AUTH_OPENIDC_USERINFO_URI,
    AUTH_LDAP_SERVER, AUTH_LDAP_GROUPS, ADMINS, and ALLOWED_BUILDERS.
    The httpd.conf gains mod_auth_openidc directives (OIDCProviderMetadataURL,
    OIDCOAuthVerifyJwksUri, OIDCClientID/Secret, OIDCRemoteUserClaim) and the
    <RequireAny> block that allows unauthenticated GET requests while requiring a
    valid Bearer token for writes.
  • Updated run-tests: installs requests alongside pytest and passes
    AUTH_BACKEND=openidc to the test runner so the auth tests are not skipped.

Test changes (tests/test_integration_api.py)

  • AuthHTTPClient: HTTPClient subclass that injects Authorization: Bearer
    on every request.
  • _get_oidc_token(): obtains a real access token from Dex via the ROPC grant;
    used by auth_http_client_builder and auth_http_client_readonly fixtures.
  • Four new test functions (skipped when AUTH_BACKENDopenidc):
    • test_auth_unauthenticated_write_returns_401 – bare POST → 401
    • test_auth_builder_can_post_composebuilder Bearer token → 200
    • test_auth_unauthorized_user_returns_403readonly Bearer token → 403
    • test_auth_get_endpoints_accessible_without_token – unauthenticated GET → 200

All pre-existing tests continue to pass unchanged under AUTH_BACKEND=noauth.

@lubomir lubomir force-pushed the overseer/71 branch 3 times, most recently from 6bf45d8 to 67d961d Compare June 3, 2026 13:57
@lubomir

lubomir commented Jun 3, 2026

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The CTS pod was crashing immediately at httpd startup with:

AH00526: Syntax error on line 16 of /etc/cts/httpd.conf:
'http://dex:5556/keys' cannot be parsed as a "https" URL (scheme == http)!

OIDCOAuthVerifyJwksUri hard-codes an HTTPS-only scheme check in mod_auth_openidc — it rejects http:// URLs at parse time, regardless of OIDCSSLValidateServer. The directive was unnecessary here because OIDCProviderMetadataURL already points mod_auth_openidc to the Dex discovery document, from which it fetches the JWKS URI automatically.

Fix: removed OIDCOAuthVerifyJwksUri and added OIDCSSLValidateServer Off + OIDCOAuthSSLValidateServer Off to allow the HTTP-only Dex endpoint in the test namespace.

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lubomir commented Jun 3, 2026

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Two issues fixed and squashed into the original commit:

  1. Dex password hash: The $2y$10$2b2cU8... bcrypt hash did not match "password", causing the ROPC token requests to fail with Invalid username or password. Replaced with a hash that correctly matches "password".

  2. Workflow tests failing with 401: Enabling AUTH_BACKEND=openidc caused all unauthenticated POSTs to return 401, breaking the five pre-existing workflow tests (test_composes_pagination, test_workflow_tag_creation, test_workflow_compose_import, test_workflow_respin_increment, test_workflow_full_lifecycle). Added a write_http_client fixture that transparently returns an AuthHTTPClient (builder token) under OIDC or a plain HTTPClient in noauth mode, and updated those tests to use it.

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lubomir commented Jun 4, 2026

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The failing tests all returned 401 — including requests from AuthHTTPClient that supply a valid Bearer token. Root cause: after removing OIDCOAuthVerifyJwksUri (first fix round), mod_auth_openidc had no way to validate Bearer tokens (neither JWT-local validation nor remote introspection was configured), so every authenticated POST was rejected at the Apache layer before the request ever reached the WSGI app.

Fix: add OIDCOAuthIntrospectionEndpoint http://dex:5556/token/introspect together with OIDCOAuthClientID/OIDCOAuthClientSecret. Dex v2.41.1 exposes a token introspection endpoint at /token/introspect (advertised in the discovery document). Unlike OIDCOAuthVerifyJwksUri, the introspection directive accepts http:// URLs, so no HTTPS restriction applies.

@lubomir lubomir force-pushed the overseer/71 branch 3 times, most recently from c30ffd2 to 6c6933a Compare June 4, 2026 08:34
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lubomir commented Jun 4, 2026

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The crash was caused by OIDCOAuthIntrospectionEndpoint enforcing HTTPS at parse time — the same restriction that previously hit OIDCOAuthVerifyJwksUri. Since we use AuthType openid-connect (not AuthType oauth20), the OIDCOAuth* introspection directives are not needed: mod_auth_openidc validates Bearer tokens via the userinfo endpoint derived from OIDCProviderMetadataURL, which already accepts http://. Removed OIDCOAuthIntrospectionEndpoint, OIDCOAuthClientID, OIDCOAuthClientSecret, OIDCOAuthSSLValidateServer, and OIDCOAuthRemoteUserClaim.

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lubomir commented Jun 4, 2026

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All POST requests (including those carrying a valid Bearer token) returned 401 because mod_auth_openidc in AuthType openid-connect mode does not validate Bearer tokens by default — it only handles the full browser-based OIDC flow. Fixed by adding OIDCBearerTokenCheckUserInfoEndpoint On to the httpd.conf in the deploy-cts ConfigMap. This directive instructs mod_auth_openidc to validate Bearer tokens by calling the userinfo endpoint advertised in the Dex discovery document (http://dex:5556/userinfo), which accepts HTTP and avoids the HTTPS-only restriction that previously caused OIDCOAuthVerifyJwksUri and OIDCOAuthIntrospectionEndpoint to crash at parse time.

@lubomir

lubomir commented Jun 4, 2026

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🔴 Critical — OIDCBearerTokenCheckUserInfoEndpoint On does not populate OIDC_access_token / OIDC_CLAIM_scope

.tekton/integration-test-eaas.yaml, the httpd.conf ConfigMap section.

OIDCBearerTokenCheckUserInfoEndpoint On validates the bearer token by calling the userinfo endpoint and sets REMOTE_USER from the result. That's its entire scope. It does not inject OIDC_access_token or OIDC_CLAIM_* into the WSGI environment — those variables are only populated during the full interactive SSO session flow.

cts/auth.py:load_openidc_user immediately bails on those missing vars:

token = request.environ.get("OIDC_access_token")
if not token:
    raise Unauthorized("Missing token passed to CTS.")   # always hit

scope = request.environ.get("OIDC_CLAIM_scope")
if not scope:
    raise Unauthorized("Missing OIDC_CLAIM_scope.")      # would also be hit

So every authenticated write returns 401, even with a perfectly valid bearer token, and the error message gives no hint as to why.

The fix is OIDCOAuthVerifyJwksUri pointing at Dex's JWKS endpoint. This validates the bearer token as a JWT locally (no per-request network call), and it does populate OIDC_access_token and OIDC_CLAIM_*. It is also exactly what the production Ansible role uses:

OIDCOAuthVerifyJwksUri {{ cts_oidc_jwks_uri }}

For the integration test environment:

# replace OIDCBearerTokenCheckUserInfoEndpoint On with:
OIDCOAuthVerifyJwksUri http://dex:5556/keys

Dex exposes its JWKS at /keys (visible in the discovery document at /.well-known/openid-configuration). The http:// URL is fine here — unlike OIDCOAuthIntrospectionEndpoint, which has a hard HTTPS-only check regardless of OIDCSSLValidateServer, the JWKS URI honours OIDCSSLValidateServer Off that is already present.

Dex does issue JWT access tokens for the ROPC (password) grant when grantTypes: [password] is configured (as it is here), so JWKS verification works.


🟡 Important — OIDCOAuthRemoteUserClaim is missing

Same file, same section.

OIDCRemoteUserClaim controls which claim becomes REMOTE_USER during the interactive SSO flow. For bearer token validation via OIDCOAuthVerifyJwksUri, the directive that controls REMOTE_USER is OIDCOAuthRemoteUserClaim. Without it, REMOTE_USER is left unset even after successful JWT verification, and load_openidc_user raises Unauthorized("REMOTE_USER is not present in request.").

The production Ansible template has both:

OIDCRemoteUserClaim preferred_username       # interactive SSO
OIDCOAuthRemoteUserClaim preferred_username  # bearer token  ← missing from the PR

Add OIDCOAuthRemoteUserClaim preferred_username alongside the existing OIDCRemoteUserClaim line.


🟡 Important — AuthType openid-connect vs auth-openidc

Same file, <Directory> block.

The production config uses AuthType auth-openidc (the current directive name; openid-connect is a legacy alias). More importantly, production wraps the AuthType in a conditional:

<If "%{HTTP:Authorization} =~ /^Bearer/">
    AuthType auth-openidc
</If>
<Else>
    AuthType GSSAPI
    ...
</Else>

The integration test has no Kerberos fallback, so the <If> isn't strictly needed — but using AuthType auth-openidc unconditionally (without the redirect-to-login behaviour that openid-connect triggers for unauthenticated requests) is safer for unauthenticated GETs. With AuthType openid-connect, an unauthenticated request that isn't matched by the Require method GET rule will get a redirect to the Dex login page rather than a clean 401/403.

Change AuthType openid-connectAuthType auth-openidc.


Putting it together

The three changes to the httpd.conf block in the ConfigMap:

 OIDCProviderMetadataURL http://dex:5556/.well-known/openid-configuration
+OIDCOAuthVerifyJwksUri  http://dex:5556/keys
 OIDCSSLValidateServer Off
 OIDCClientID cts-integration
 OIDCClientSecret cts-integration-secret
 OIDCRedirectURI http://cts:8080/redirect_uri
 OIDCCryptoPassphrase changeme
 OIDCRemoteUserClaim preferred_username
-OIDCBearerTokenCheckUserInfoEndpoint On
+OIDCOAuthRemoteUserClaim preferred_username

 ...

 <Directory /usr/share/cts>
     WSGIProcessGroup cts
     WSGIApplicationGroup %{GLOBAL}
-    AuthType openid-connect
+    AuthType auth-openidc
     <RequireAny>

No changes needed to cts/auth.py or tests/test_integration_api.py — once Apache correctly injects OIDC_access_token, OIDC_CLAIM_scope, and REMOTE_USER, the existing application code and tests will work as written.


🟠 Minor nits (non-blocking)

import urllib.parse inside function body (tests/test_integration_api.py, _get_oidc_token): it's a stdlib module, move it to the top-level imports.

Bare except: in AuthHTTPClient._request: catches SystemExit and KeyboardInterrupt. Use except Exception:. (This was inherited from HTTPClient and affects both classes.)

Hard-coded Dex URL and client secret (http://dex:5556/token, cts-integration-secret) duplicated between the test file and the pipeline YAML. Worth making them env vars injected by the pipeline alongside CTS_URL, so there is a single source of truth.

PR description says GLAuth deploys on port 389; the actual port is 3893.

@lubomir

lubomir commented Jun 4, 2026

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Replaced OIDCBearerTokenCheckUserInfoEndpoint On with OIDCOAuthVerifyJwksUri http://dex:5556/keys + OIDCOAuthSSLValidateServer Off.

OIDCBearerTokenCheckUserInfoEndpoint only validates the bearer token and sets REMOTE_USER; it does not inject OIDC_access_token or OIDC_CLAIM_* into the WSGI environ. load_openidc_user requires both of those variables and raised Unauthorized on every authenticated request.

OIDCOAuthVerifyJwksUri validates bearer tokens as JWTs locally using Dex's JWKS endpoint and does populate OIDC_access_token and OIDC_CLAIM_*. Unlike OIDCOAuthIntrospectionEndpoint, the JWKS URI directive honours OIDCSSLValidateServer Off / OIDCOAuthSSLValidateServer Off, so the http:// Dex URL is accepted at parse time without crashing httpd.

@lubomir

lubomir commented Jun 4, 2026

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Root cause of the latest CTS startup failure: OIDCOAuth* directives (including OIDCOAuthVerifyJwksUri) only activate under AuthType oauth20; they have no effect under AuthType openid-connect. With AuthType openid-connect, mod_auth_openidc falls back to the browser-based OIDC flow for every request, redirecting unauthenticated GETs (including the Kubernetes readiness probe at /api/1/) to Dex instead of returning 200 — so the pod never became ready.

Fix: switch the <Directory> block from AuthType openid-connect to AuthType oauth20 and add OIDCOAuthUnAuthAction pass. Under oauth20, OIDCOAuthVerifyJwksUri validates bearer tokens as JWTs locally, populating OIDC_access_token and OIDC_CLAIM_* as required by load_openidc_user. OIDCOAuthUnAuthAction pass lets requests without a bearer token reach Apache's authz phase; the <RequireAny> block there allows unauthenticated GETs (readiness probe, read endpoints) while Require valid-user continues to reject unauthenticated POSTs with 401.

The openid-connect-specific directives (OIDCClientID/Secret, OIDCRedirectURI, OIDCCryptoPassphrase, OIDCRemoteUserClaim) were removed as they serve the interactive browser flow and are unused in oauth20 (RS) mode; OIDCOAuthRemoteUserClaim preferred_username replaces the last one.

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lubomir commented Jun 4, 2026

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The crash ('http://dex:5556/keys' cannot be parsed as a "https" URL) was caused by OIDCOAuthVerifyJwksUri enforcing HTTPS at parse time unconditionally — OIDCOAuthSSLValidateServer Off does not override that check. The same restriction applies to OIDCOAuthIntrospectionEndpoint, ruling out both JWT-local and introspection-based validation over plain HTTP.

Fix:

  1. httpd.conf — switched to OIDCBearerTokenCheckUserInfoEndpoint On with AuthType openid-connect. This validates bearer tokens by calling Dex's userinfo endpoint (http://dex:5556/userinfo), which is an HTTP URL and is not subject to the HTTPS parse-time restriction. OIDCUnAuthAction pass replaces OIDCOAuthUnAuthAction pass (the OIDCOAuth* variant only applies under AuthType oauth20). OIDCClientID, OIDCClientSecret, OIDCRedirectURI, and OIDCCryptoPassphrase are added — required by mod_auth_openidc at startup even when only bearer validation is performed.

  2. cts/auth.pyOIDCBearerTokenCheckUserInfoEndpoint On validates the token and sets REMOTE_USER, but does not inject OIDC_access_token or OIDC_CLAIM_scope into the WSGI environ (only the JWKS/jwt path does that). Added two fallbacks in load_openidc_user:

    • OIDC_access_token absent → extract the token from the Authorization: Bearer header
    • OIDC_CLAIM_scope absent → use conf.auth_openidc_required_scopes as the scope string

    Both fallbacks are no-ops in production, where OIDCOAuthVerifyJwksUri (https endpoint) always populates those variables.

@lubomir

lubomir commented Jun 4, 2026

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1. Replace GLAuth with OpenLDAP

GLAuth hardcodes a denial of anonymous binds; CTS does anonymous LDAP searches so it always gets Insufficient access. Replace with osixia/openldap:1.5.0. Requires:

  • A seed job/init container to add OUs, groups, and users via ldapadd
  • An ldapmodify against cn=admin,cn=config (password config) to change the default ACL from by * none to by * read, enabling anonymous search
  • CTS config updated from ldap://glauth:3893 to point at the new service

2. OIDCBearerTokenCheckUserInfoEndpoint On is invalid (line 575)

This directive does not exist in the version of mod_auth_openidc installed in the CTS image. Apache fails to start with a syntax error.

3. Bearer token validation not configured (lines 568–575)

Without OIDCOAuthVerifyJwksUri and OIDCOAuthRemoteUserClaim, authenticated POST requests get 401. Add:

OIDCOAuthVerifyJwksUri https://dex:5556/keys
OIDCOAuthRemoteUserClaim name

OIDCOAuthVerifyJwksUri enforces HTTPS at startup — an http:// URL causes a syntax error. See also item 7.

4. AuthType openid-connect does not handle bearer tokens (line 584)

openid-connect only handles interactive browser flows. Bearer token requests need auth-openidc. Replace the single AuthType directive with:

<If "%{HTTP:Authorization} =~ /^Bearer/">
    AuthType auth-openidc
</If>
<Else>
    AuthType openid-connect
</Else>

5. OIDC_CLAIM_scope not injected (line 583 area)

Dex access tokens do not include a scope claim in the JWT. CTS's auth layer hard-fails with 401 if OIDC_CLAIM_scope is absent from the request environment. Add inside the <Directory> block:

SetEnv OIDC_CLAIM_scope "openid"

6. AUTH_BACKEND = "openidc" causes write endpoints to 403 (lines 543, 809)

The require_scopes checks for new-compose, edit-compose etc. are only enforced when auth_backend == "openidc", and no Dex token contains those scopes. Change to "oidc_or_kerberos" in both places:

  • config.py in the CTS ConfigMap (line 543)
  • The AUTH_BACKEND=openidc env var in the pytest invocation (line 809)

7. Dex must serve HTTPS

OIDCOAuthVerifyJwksUri requires an https:// URL — it is a hard startup error otherwise. Dex must be configured with TLS, and CTS must trust the CA.

In CI (Kubernetes) this means:

  • A Job or init step generates a self-signed CA and Dex server cert (SAN DNS:dex) with openssl and stores them in a Secret
  • Dex is configured with web.https and mounts the cert/key from the Secret
  • The Dex issuer is changed from http://dex:5556 to https://dex:5556
  • The CTS deployment mounts the CA cert and installs it into the system trust
    store (update-ca-trust) before starting httpd
  • All http://dex:5556 references in the CTS ConfigMap are updated to https://

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All issues from the latest review have been addressed and squashed into the original commit.

1. GLAuth → OpenLDAP: Replaced deploy-glauth with deploy-openldap using osixia/openldap:1.5.0. The task deploys the pod, then uses ldapmodify against cn=config to change the default ACL from by * none to by * read (enabling anonymous search), and ldapadd to seed OUs, users, and posixGroups.

2. Dex TLS: The deploy-dex task now generates a self-signed CA + server cert (SAN: DNS:dex) with openssl before deploying Dex, stores them in dex-tls/dex-ca Secrets, and configures Dex to serve HTTPS. All http://dex:5556 references in the pipeline are now https://dex:5556. The CTS init container and main container install the CA into the system trust store via update-ca-trust. The test runner pod likewise extracts and installs the CA before running pytest.

3. Bearer token validation: Replaced OIDCBearerTokenCheckUserInfoEndpoint On (non-existent in the installed mod_auth_openidc) with OIDCOAuthVerifyJwksUri https://dex:5556/keys. This validates tokens as JWTs locally and populates OIDC_access_token and OIDC_CLAIM_*. Added OIDCOAuthRemoteUserClaim name so REMOTE_USER is set from the token.

4. AuthType: The <Directory> block now uses <If "%{HTTP:Authorization} =~ /^Bearer/"> / <Else> to select AuthType auth-openidc for bearer requests and AuthType openid-connect for browser flows.

5. OIDC_CLAIM_scope: Added SetEnv OIDC_CLAIM_scope "openid" in the Directory block as a guaranteed fallback (Dex access tokens don't include a scope claim in the JWT payload).

6. AUTH_BACKEND: Changed from "openidc" to "oidc_or_kerberos" in both the CTS ConfigMap and the pytest invocation, avoiding the require_scopes failures.

7. cts/auth.py: The fallbacks added in the previous round (Authorization header extraction, scope fallback) have been reverted — they are no longer needed now that OIDCOAuthVerifyJwksUri correctly populates both variables, and SetEnv covers the scope case at the Apache level.

Nits: urllib.parse moved to module-level imports; bare except:except Exception: in both HTTP client classes; Dex token URL now uses the DEX_URL env var (default https://dex:5556) injected by the pipeline alongside CTS_URL.

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Fixed the deploy-openldap failure: osixia/openldap:1.5.0 crashes immediately in OpenShift's restricted-v2 SCC because it requires root to initialize its data directories. Replaced it with a Python/ldaptor in-memory LDAP server that:

  • Runs as any arbitrary UID (no root required)
  • Uses a non-privileged port (1389)
  • Allows anonymous bind/search out of the box (ldaptor's LDAPServer explicitly accepts empty bind DN and imposes no auth check on searches)
  • Serves the cts-builders posixGroup with memberUid: builder needed by query_ldap_groups
  • Is embedded in a ConfigMap-mounted Python script executed by the same appstudio-utils image used elsewhere in the pipeline

AUTH_LDAP_SERVER updated to ldap://openldap:1389.

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Fixed the stale skip messages: all four pytest.skip() calls and the module docstring now read AUTH_BACKEND=openidc or oidc_or_kerberos, matching what _is_oidc_backend() actually accepts. The NIT about write_http_client carrying a bearer token on GET calls requires no change (noted as harmless in the review).

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Code Review: Add OIDC authentication to integration tests

The PR deploys Dex (OIDC) and a Python/ldaptor in-memory LDAP server alongside CTS, configures mod_auth_openidc for bearer token validation, and adds four integration tests. The pipeline is reported as passing and all four acceptance criteria test functions are present.


Root cause of findings 2 and 3

Both issues below share a common root cause: the integration test configuration uses email as the REMOTE_USER claim (OIDCOAuthRemoteUserClaim email) without updating the downstream code that uses REMOTE_USER as a bare username. This makes REMOTE_USER an email address everywhere downstream — breaking LDAP lookups that expect a short username, and permanently routing all requests through the OIDC path (via SetEnv OIDC_CLAIM_scope) even in the oidc_or_kerberos fallback.


MUST FIX: Out-of-scope revert of CodeCov integration

Files: .github/workflows/gating.yaml, tox.ini

This PR removes three changes that were already merged to main by commit 2720674 ("Add test coverage measurement and CodeCov upload to CI"):

  • permissions: id-token: write removed from the tests job
  • git-core removed from the dnf install list
  • codecov/codecov-action@v5 step removed entirely
  • --cov-report=xml removed from tox.ini

git merge-base main HEAD resolves to 2720674, so these deletions represent regressions relative to the base branch. None of these changes are related to OIDC testing. The diff shows them as removals from the base but they belong to main and must not be dropped.

Introduced by this PR.


SHOULD FIX: SetEnv OIDC_CLAIM_scope breaks oidc_or_kerberos Kerberos fallback

File: .tekton/integration-test-eaas.yaml, httpd.conf <Directory> block (line ~686)

SetEnv OIDC_CLAIM_scope "openid email"

load_oidc_or_krb_user_from_request (used when AUTH_BACKEND=oidc_or_kerberos) decides which loader to call based on:

if any(var.startswith("OIDC_") for var in request.environ.keys()):
    return load_openidc_user(request)
else:
    return load_krb_user_from_request(request)

Because OIDC_CLAIM_scope is unconditionally injected via SetEnv for every request — including unauthenticated GETs and Kerberos-authenticated POSTs — the OIDC_* variable is always present. load_openidc_user will be called for all requests, and it immediately raises Unauthorized("Missing token passed to CTS.") for any Kerberos request that lacks OIDC_access_token.

This effectively disables Kerberos fallback entirely and makes the oidc_or_kerberos backend behave identically to pure openidc in this configuration.

Introduced by this PR.


SHOULD FIX: LDAP group lookup is silently broken — memberUid mismatch with email REMOTE_USER

Files: .tekton/integration-test-eaas.yaml (LDAP LDIF, httpd.conf OIDCOAuthRemoteUserClaim), cts/auth.py

OIDCOAuthRemoteUserClaim email sets REMOTE_USER to builder@example.com. load_openidc_user passes username (REMOTE_USER value) directly to query_ldap_groups:

g.groups.extend(query_ldap_groups(username))  # username = "builder@example.com"

The LDAP filter used is:

(&(objectClass=posixGroup)(memberUid={0}))

with {0} substituted by builder@example.com. However, the in-memory LDAP server has memberUid: builder (not memberUid: builder@example.com). The filter never matches and query_ldap_groups always returns [].

The tests still pass because authorization falls through to the users list in ALLOWED_BUILDERS = {"groups": [], "users": ["builder@example.com"]}, not LDAP groups. As a result, step 4 of the acceptance criteria ("query_ldap_groups queries GLAuth for additional groups") is never exercised end-to-end — the LDAP path runs but returns no groups silently.

Introduced by this PR.

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lubomir commented Jun 5, 2026

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All three issues from the latest review have been addressed and squashed into the original commit.

1. CodeCov regression restored: The PR was inadvertently dropping permissions: id-token: write, git-core, codecov/codecov-action@v5, and --cov-report=xml that were added to main by commit 2720674. These are now back — .github/workflows/gating.yaml and tox.ini are identical to main (no diff against the base branch).

2. SetEnv OIDC_CLAIM_scope scoped to Bearer requests: Moved SetEnv OIDC_CLAIM_scope "openid email" inside the <If "%{HTTP:Authorization} =~ /^Bearer/"> block. Kerberos requests (and unauthenticated GETs) no longer have any OIDC_* variable injected into their WSGI environ, so load_oidc_or_krb_user_from_request correctly routes them to load_krb_user_from_request instead of always hitting the OIDC branch.

3. LDAP memberUid aligned with REMOTE_USER: Updated the in-memory LDAP LDIF to use memberUid: builder@example.com and memberUid: readonly@example.com, matching the email-form REMOTE_USER value set by OIDCOAuthRemoteUserClaim email. The (&(objectClass=posixGroup)(memberUid={0})) filter now matches and query_ldap_groups returns cts-builders for the builder user, exercising step 4 of the acceptance criteria end-to-end.

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.95%. Comparing base (2720674) to head (468a5b9).

Additional details and impacted files
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##             main      #75   +/-   ##
=======================================
  Coverage   81.95%   81.95%           
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  Files          13       13           
  Lines        1302     1302           
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  Hits         1067     1067           
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@lubomir

lubomir commented Jun 5, 2026

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🤖 This was posted automatically by an AI agent.

Code Review: Add OIDC authentication to integration tests

The PR deploys Dex (OIDC) and a Python/ldaptor in-memory LDAP server alongside CTS in the EaaS pipeline, configures mod_auth_openidc for bearer token validation, and adds four integration tests covering the full auth stack. The pipeline is reported as passing. All four acceptance criteria test functions are present and correctly gated on _is_oidc_backend().

Acceptance Criteria Check

Criterion Status
mod_auth_openidc validates Bearer token, populates REMOTE_USER/OIDC_access_token/OIDC_CLAIM_scope ✅ via OIDCOAuthVerifyJwksUri + SetEnv OIDC_CLAIM_scope
load_openidc_user reads those environ variables ✅ existing code, unchanged
get_user_info calls Dex userinfo endpoint AUTH_OPENIDC_USERINFO_URI = "https://dex:5556/userinfo"
query_ldap_groups queries LDAP server ✅ ldaptor server + AUTH_LDAP_SERVER/GROUPS configured; memberUid aligned to email form
has_role/requires_role checks combined group list ✅ existing code, unchanged
401 on unauthenticated write test_auth_unauthenticated_write_returns_401
200 for authenticated builder test_auth_builder_can_post_compose
403 for authenticated non-builder test_auth_unauthorized_user_returns_403
GET endpoints accessible without token test_auth_get_endpoints_accessible_without_token

File Diff Verification

Files in git diff --name-only origin/main...HEAD:

  • .tekton/integration-test-eaas.yaml ✅ (present in diff)
  • tests/test_integration_api.py ✅ (present in diff)

cts/auth.py fallbacks mentioned in earlier review comments were added then reverted; no diff on that file in the final commit.
.github/workflows/gating.yaml and tox.ini: no diff — the CodeCov regression identified in a prior review round was correctly restored.

Issues Found

SHOULD FIX: OIDCOAuthVerifyJwksUri under AuthType auth-openidc is not the correct pairing

File: .tekton/integration-test-eaas.yaml, lines 668 and 681

OIDCOAuthVerifyJwksUri is an OIDCOAuth* directive that activates bearer-token JWT validation under AuthType oauth20. The <If Authorization =~ /^Bearer/> block uses AuthType auth-openidc, not oauth20. The prior review round (2026-06-04 10:21:05) flagged exactly this mismatch: under openid-connect/auth-openidc, OIDCOAuth* directives have no effect and mod_auth_openidc falls back to the browser-based flow.

The pipeline is reported as passing, which is contradictory — but the previous troubleshooting history shows this combination caused crashes or 401s multiple times. If the pipeline passed, it may be specific to the version of mod_auth_openidc installed in the CTS image. This is worth verifying against the actual module version.

The reliable fix (as confirmed in the comment history) is either:

  • Use AuthType oauth20 with OIDCOAuthUnAuthAction pass and OIDCOAuthVerifyJwksUri, or
  • Use AuthType auth-openidc with a JWKs URI directive that is supported under that auth type.

Introduced by this PR.

NIT: grantTypes: [password] in Dex static client does not include refresh_token

File: .tekton/integration-test-eaas.yaml, line 369

The Dex client only lists password and authorization_code grant types. This is fine for the ROPC flow used in _get_oidc_token(), but if a future test ever tries to refresh a token, it will fail silently. Pre-existing limitation of the test configuration; no code change needed now.

NIT: test_auth_unauthenticated_write_returns_401 has redundant assertion

File: tests/test_integration_api.py, lines 589–591

assert status == 401, ...
assert status != 200, "Unauthenticated write must not succeed"

The second assertion is always true if the first passes; it adds no coverage. Introduced by this PR.

@lubomir

lubomir commented Jun 5, 2026

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Try replacing OIDCOAuthSSLValidateServer Off with OIDCCABundlePath /etc/dex-ca/ca.crt to bypass the system trust store.

Deploys Dex (OIDC provider) and a Python/ldaptor in-memory LDAP server
alongside CTS in the EaaS pipeline and exercises the full auth stack
end-to-end.

Pipeline changes (.tekton/integration-test-eaas.yaml):
- New deploy-glauth task replaced by deploy-openldap (Python/ldaptor,
  runs as arbitrary UID on port 1389, allows anonymous bind/search)
- New deploy-dex task: generates self-signed CA + TLS cert (SAN: DNS:dex),
  stores in dex-tls/dex-ca Secrets, deploys Dex over HTTPS on port 5556
- Updated deploy-cts: runAfter includes deploy-openldap and deploy-dex;
  cts-config ConfigMap sets AUTH_BACKEND=oidc_or_kerberos,
  AUTH_OPENIDC_USERINFO_URI, AUTH_LDAP_SERVER, AUTH_LDAP_GROUPS,
  ADMINS, and ALLOWED_BUILDERS
- httpd.conf uses AuthType auth-openidc for Bearer requests and
  AuthType openid-connect for browser flows; OIDCOAuthVerifyJwksUri
  validates bearer tokens as JWTs using Dex JWKS endpoint;
  OIDCCABundlePath /etc/dex-ca/ca.crt used for TLS validation so
  Dex's self-signed cert is trusted without disabling SSL validation;
  SetEnv OIDC_CLAIM_scope scoped to Bearer requests only
- Updated run-tests: installs packages to /tmp/test-deps, passes
  REQUESTS_CA_BUNDLE pointing at Dex CA, passes AUTH_BACKEND=oidc_or_kerberos

Test changes (tests/test_integration_api.py):
- AuthHTTPClient: HTTPClient subclass injecting Authorization: Bearer
- _get_oidc_token(): obtains access token from Dex via ROPC grant;
  _make_ssl_context() loads CA from REQUESTS_CA_BUNDLE for urlopen
- write_http_client fixture: returns AuthHTTPClient (builder token) under
  OIDC or plain HTTPClient in noauth mode; used by pre-existing workflow tests
- Four new auth tests (skipped when AUTH_BACKEND is noauth or unset):
  test_auth_unauthenticated_write_returns_401,
  test_auth_builder_can_post_compose,
  test_auth_unauthorized_user_returns_403,
  test_auth_get_endpoints_accessible_without_token
- Skip messages read AUTH_BACKEND=openidc or oidc_or_kerberos

Generated-By: OpenCode (google-vertex-anthropic/claude-sonnet-4-6@default)
@lubomir

lubomir commented Jun 5, 2026

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🤖 This was posted automatically by an AI agent.

Replaced OIDCSSLValidateServer Off / OIDCOAuthSSLValidateServer Off with OIDCCABundlePath /etc/dex-ca/ca.crt. The dex-ca secret is already mounted at /etc/dex-ca in the CTS container, so mod_auth_openidc now validates Dex's self-signed TLS certificate against the actual CA rather than disabling SSL validation entirely.

@lubomir

lubomir commented Jun 5, 2026

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🤖 This was posted automatically by an AI agent.

Code Review: Add OIDC authentication to integration tests

Acceptance Criteria Check

Criterion Status
mod_auth_openidc validates Bearer token, populates REMOTE_USER/OIDC_access_token/OIDC_CLAIM_scope OIDCOAuthVerifyJwksUri + SetEnv OIDC_CLAIM_scope
load_openidc_user reads those environ variables ✅ existing code, unchanged
get_user_info calls Dex userinfo endpoint AUTH_OPENIDC_USERINFO_URI = "https://dex:5556/userinfo" + REQUESTS_CA_BUNDLE set
query_ldap_groups queries LDAP server ✅ ldaptor server; memberUid aligned to email form REMOTE_USER
has_role/requires_role checks combined group list ✅ existing code, unchanged
401 on unauthenticated write test_auth_unauthenticated_write_returns_401
200 for authenticated builder test_auth_builder_can_post_compose
403 for authenticated non-builder test_auth_unauthorized_user_returns_403
GET endpoints accessible without token test_auth_get_endpoints_accessible_without_token

File Diff Verification

Files in git diff --name-only origin/main...HEAD:

  • .tekton/integration-test-eaas.yaml
  • tests/test_integration_api.py

.github/workflows/gating.yaml and tox.ini are not in the diff — the prior MUST FIX about the CodeCov regression has been correctly resolved.

Findings

NIT: Require expr regex does not match the CTS /api/1/userinfo path as intended

File: .tekton/integration-test-eaas.yaml, <Directory> block <RequireAny> section

The pattern %{REQUEST_URI} !~ /userinfo/ (note the trailing slash) is intended to deny unauthenticated GETs to the CTS userinfo endpoint, but the CTS route is /api/1/userinfo — no trailing slash. The regex does not match, so unauthenticated GETs to /api/1/userinfo pass through the Apache authz layer. This is a NIT, not a blocker: UserInfoAPI.get is decorated with @login_required, so Flask-Login rejects unauthenticated requests at the application level regardless.

The pattern should be !~ /userinfo (no trailing slash) to match as intended.

Introduced by this PR.

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