Add appservice-double-puppet double-puppeting support to mautrix-gmessages

Shared Secret Auth double puppeting still works for this bridge, but
is deprecated and will go away in the future.

docs/configuring-playbook-bridge-mautrix-gmessages.md

@@ -14,11 +14,13 @@ matrix_mautrix_gmessages_enabled: true
 
 If you'd like to use [Double Puppeting](https://docs.mau.fi/bridges/general/double-puppeting.html) (hint: you most likely do), you have 2 ways of going about it.
 
-### Method 1: automatically, by enabling Shared Secret Auth
+### Method 1: automatically, by enabling Appservice Double Puppet or Shared Secret Auth
 
-The bridge will automatically perform Double Puppeting if you enable [Shared Secret Auth](configuring-playbook-shared-secret-auth.md) for this playbook.
+The bridge will automatically perform Double Puppeting if you enable the [Appservice Double Puppet](configuring-playbook-appservice-double-puppet.md) service or the [Shared Secret Auth](configuring-playbook-shared-secret-auth.md) service for this playbook.
 
-This is the recommended way of setting up Double Puppeting, as it's easier to accomplish, works for all your users automatically, and has less of a chance of breaking in the future.
+Enabling [Appservice Double Puppet](configuring-playbook-appservice-double-puppet.md) is the recommended way of setting up Double Puppeting, as it's easier to accomplish, works for all your users automatically, and has less of a chance of breaking in the future.
+
+Enabling double puppeting by enabling the [Shared Secret Auth](configuring-playbook-shared-secret-auth.md) service works at the time of writing, but is deprecated and will stop working in the future.
 
 ### Method 2: manually, by asking each user to provide a working access token
 

group_vars/matrix_servers

@@ -1795,7 +1795,16 @@ matrix_mautrix_gmessages_appservice_token: "{{ '%s' | format(matrix_homeserver_g
 matrix_mautrix_gmessages_homeserver_address: "{{ matrix_addons_homeserver_client_api_url }}"
 matrix_mautrix_gmessages_homeserver_token: "{{ '%s' | format(matrix_homeserver_generic_secret_key) | password_hash('sha512', 'gmessa.hs.token', rounds=655555) | to_uuid }}"
 
-matrix_mautrix_gmessages_login_shared_secret: "{{ matrix_synapse_ext_password_provider_shared_secret_auth_shared_secret if matrix_synapse_ext_password_provider_shared_secret_auth_enabled else '' }}"
+matrix_mautrix_gmessages_login_shared_secret: |-
+  {{
+    ("as_token:" + matrix_appservice_double_puppet_registration_as_token)
+    if matrix_appservice_double_puppet_enabled
+    else (
+      matrix_synapse_ext_password_provider_shared_secret_auth_shared_secret if matrix_synapse_ext_password_provider_shared_secret_auth_enabled
+      if matrix_synapse_ext_password_provider_shared_secret_auth_enabled
+      else ""
+    )
+  }}
 
 matrix_mautrix_gmessages_metrics_enabled: "{{ prometheus_enabled or matrix_metrics_exposure_enabled }}"
 

roles/custom/matrix-bridge-mautrix-gmessages/defaults/main.yml

@@ -132,7 +132,7 @@ matrix_mautrix_gmessages_appservice_database_uri: "{{
 	}[matrix_mautrix_gmessages_database_engine]
 }}"
 
-# Can be set to enable automatic double-puppeting via Shared Secret Auth (https://github.com/devture/matrix-synapse-shared-secret-auth).
+# Can be set to enable automatic double-puppeting via Shared Secret Auth (https://github.com/devture/matrix-synapse-shared-secret-auth) or Appservice Double Puppet.
 matrix_mautrix_gmessages_login_shared_secret: ''
 matrix_mautrix_gmessages_bridge_login_shared_secret_map:
   "{{ {matrix_mautrix_gmessages_homeserver_domain: matrix_mautrix_gmessages_login_shared_secret} if matrix_mautrix_gmessages_login_shared_secret else {} }}"