Fix OIDC issuer URL concatenation for Mastodon bug

- Removed trailing slash in '_oidc_client_issuer_url' to avoid issuer mismatch
- Use '.rstrip('/')' to normalize '_oidc_url'
- Switched to '~' concatenation instead of inline slashes for all OIDC endpoints
- Ensures that Mastodon and other OIDC clients match the issuer from Keycloak discovery

Change motivated by Mastodon issuer mismatch bug (OpenIDConnect::Discovery::DiscoveryFailed).
See related discussion: https://chatgpt.com/share/68a17d3c-c980-800f-934c-d56955b45f81
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Kevin Veen-Birkenbach 2025-08-17 09:02:03 +02:00
parent 2a1a956739
commit 14e868a644
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@ -10,30 +10,30 @@
## Helper Variables:
_oidc_client_realm: "{{ OIDC.CLIENT.REALM if OIDC.CLIENT is defined and OIDC.CLIENT.REALM is defined else SOFTWARE_NAME | lower }}"
_oidc_url: "{{
(OIDC.URL
if (oidc is defined and OIDC.URL is defined)
( OIDC.URL
if (OIDC is defined and OIDC.URL is defined)
else WEB_PROTOCOL ~ '://' ~ (domains | get_domain('web-app-keycloak'))
)
).rstrip('/')
}}"
_oidc_client_issuer_url: "{{ _oidc_url }}/realms/{{_oidc_client_realm}}/"
_oidc_client_issuer_url: "{{ _oidc_url ~ '/realms/' ~ _oidc_client_realm }}"
_oidc_client_id: "{{ OIDC.CLIENT.ID if OIDC.CLIENT is defined and OIDC.CLIENT.ID is defined else SOFTWARE_NAME | lower }}"
defaults_oidc:
URL: "{{ _oidc_url }}"
CLIENT:
ID: "{{ _oidc_client_id }}" # Client identifier, typically matching your primary domain
# secret: # Client secret for authenticating with the OIDC provider (set in the inventory file). Recommend greater then 32 characters
REALM: "{{_oidc_client_realm}}" # The realm to which the client belongs in the OIDC provider
ISSUER_URL: "{{_oidc_client_issuer_url}}" # Base URL of the OIDC provider (issuer)
DISCOVERY_DOCUMENT: "{{_oidc_client_issuer_url}}/.well-known/openid-configuration" # URL for fetching the provider's configuration details
AUTHORIZE_URL: "{{_oidc_client_issuer_url}}/protocol/openid-connect/auth" # Endpoint to start the authorization process
TOKEN_URL: "{{_oidc_client_issuer_url}}/protocol/openid-connect/token" # Endpoint to exchange authorization codes for tokens (note: 'token_url' may be a typo for 'token_url')
USER_INFO_URL: "{{_oidc_client_issuer_url}}/protocol/openid-connect/userinfo" # Endpoint to retrieve user information
LOGOUT_URL: "{{_oidc_client_issuer_url}}/protocol/openid-connect/logout" # Endpoint to log out the user
CHANGE_CREDENTIALS: "{{_oidc_client_issuer_url}}account/account-security/signing-in" # URL for managing or changing user credentials
CERTS: "{{_oidc_client_issuer_url}}/protocol/openid-connect/certs" # JSON Web Key Set (JWKS)
RESET_CREDENTIALS: "{{_oidc_client_issuer_url}}/login-actions/reset-credentials?client_id={{ _oidc_client_id }}" # Password reset url
BUTTON_TEXT: "SSO Login ({{ PRIMARY_DOMAIN | upper }})" # Default button text
ID: "{{ _oidc_client_id }}" # Client identifier, typically matching your primary domain
# secret: # Client secret for authenticating with the OIDC provider (set in the inventory file). Recommend greater then 32 characters
REALM: "{{ _oidc_client_realm }}" # The realm to which the client belongs in the OIDC provider
ISSUER_URL: "{{ _oidc_client_issuer_url }}" # Base URL of the OIDC provider (issuer)
DISCOVERY_DOCUMENT: "{{ _oidc_client_issuer_url ~ '/.well-known/openid-configuration' }}" # URL for fetching the provider's configuration details
AUTHORIZE_URL: "{{ _oidc_client_issuer_url ~ '/protocol/openid-connect/auth' }}" # Endpoint to start the authorization process
TOKEN_URL: "{{ _oidc_client_issuer_url ~ '/protocol/openid-connect/token' }}" # Endpoint to exchange authorization codes for tokens (note: 'token_url' may be a typo for 'token_url')
USER_INFO_URL: "{{ _oidc_client_issuer_url ~ '/protocol/openid-connect/userinfo' }}" # Endpoint to retrieve user information
LOGOUT_URL: "{{ _oidc_client_issuer_url ~ '/protocol/openid-connect/logout' }}" # Endpoint to log out the user
CHANGE_CREDENTIALS: "{{ _oidc_client_issuer_url ~ '/account/account-security/signing-in' }}" # URL for managing or changing user credentials
CERTS: "{{ _oidc_client_issuer_url ~ '/protocol/openid-connect/certs' }}" # JSON Web Key Set (JWKS)
RESET_CREDENTIALS: "{{ _oidc_client_issuer_url ~ '/login-actions/reset-credentials?client_id=' ~ _oidc_client_id }}" # Password reset url
BUTTON_TEXT: "SSO Login ({{ PRIMARY_DOMAIN | upper }})" # Default button text
ATTRIBUTES:
# Attribut to identify the user
USERNAME: "preferred_username"