Set default values where sensible and remove unnecessary conditionals in .env.j2.

Check for empty string instead of Null to verify if an openid_server_name is pinned.

docs/configuring-playbook-user-verification-service.md

@@ -81,10 +81,10 @@ In case Jitsi is also managed by this playbook and 'matrix' authentication in Ji
 In theory (however currently untested), UVS can handle federation. Simply set:
 
 ```yaml
-matrix_user_verification_service_uvs_openid_verify_server_name: ~
+matrix_user_verification_service_uvs_openid_verify_server_name: ""
 ```
 
-using host_vars to override the group_vars.
+in your host_vars.
 
 This will instruct UVS to verify the OpenID token against any domain given in a request. 
 Homeserver discovery is done via '.well-known/matrix/server' of the given domain.

group_vars/matrix_servers

@@ -3212,10 +3212,6 @@ matrix_user_verification_service_uvs_disable_ip_blacklist: "{{'true' if matrix_s
 
 matrix_user_verification_service_uvs_auth_token: "{{ '%s' | format(matrix_homeserver_generic_secret_key) | password_hash('sha512', 'uvs.auth.token', rounds=655555) | to_uuid }}"
 
-# Pin UVS to only check openId Tokens for the matrix_server_name configured by this playbook.
-# This is not the homeserverURL, but rather the domain in the matrix "user ID"
-matrix_user_verification_service_uvs_openid_verify_server_name: "{{ matrix_domain }}"
-
 ######################################################################
 #
 # /matrix-user-verification-service

roles/custom/matrix-user-verification-service/defaults/main.yml

@@ -48,14 +48,15 @@ matrix_user_verification_service_uvs_disable_ip_blacklist: false
 # need have the header "Authorization: Bearer changeme".
 # matrix_user_verification_service_uvs_auth_token: changeme
 
-# Matrix server name to verify OpenID tokens against. See below section.
-# Defaults to empty value which means verification is made against
-# whatever Matrix server name passed in with the token
-# matrix_user_verification_service_uvs_openid_verify_server_name: matrix.org
+# Matrix server name to verify OpenID tokens against.
+# Pin UVS to only check openId Tokens for the matrix_server_name configured by this playbook.
+# This is not the homeserverURL, but rather the domain in the matrix "user ID"
+# UVS can also be instructed to verify against the Matrix server name passed in the token, to enable set to ""
+matrix_user_verification_service_uvs_openid_verify_server_name: "{{ matrix_domain }}"
 
-# Log level, defaults to 'info'
+# Log level
 # See choices here: https://github.com/winstonjs/winston#logging-levels
-matrix_user_verification_service_uvs_log_level: warning
+matrix_user_verification_service_uvs_log_level: info
 
 
 ######################################################################

roles/custom/matrix-user-verification-service/templates/.env.j2

@@ -1,14 +1,9 @@
 UVS_ACCESS_TOKEN={{ matrix_user_verification_service_uvs_access_token }}
 UVS_HOMESERVER_URL={{ matrix_user_verification_service_uvs_homeserver_url }}
 UVS_DISABLE_IP_BLACKLIST={{ matrix_user_verification_service_uvs_disable_ip_blacklist }}
-
-{% if matrix_user_verification_service_uvs_auth_token is defined and matrix_user_verification_service_uvs_auth_token|length %}
-  UVS_AUTH_TOKEN={{ matrix_user_verification_service_uvs_auth_token }}
-{% endif %}
-{% if matrix_user_verification_service_uvs_openid_verify_server_name is defined and matrix_user_verification_service_uvs_openid_verify_server_name|length %}
+UVS_LOG_LEVEL={{ matrix_user_verification_service_uvs_log_level }}
+UVS_AUTH_TOKEN={{ matrix_user_verification_service_uvs_auth_token }}
+{% if matrix_user_verification_service_uvs_openid_verify_server_name | length > 0 %}
   UVS_OPENID_VERIFY_SERVER_NAME={{ matrix_user_verification_service_uvs_openid_verify_server_name }}
 {% endif %}
-{% if matrix_user_verification_service_uvs_log_level is defined and matrix_user_verification_service_uvs_log_level|length %}
-  UVS_LOG_LEVEL={{ matrix_user_verification_service_uvs_log_level }}
-{% endif %}