From 13186a1ddcdee7db05d01ef8d780f105e9aa6a06 Mon Sep 17 00:00:00 2001
From: Tulir Asokan <tulir@maunium.net>
Date: Mon, 29 Jun 2020 15:28:43 +0300
Subject: [PATCH] Add mx-puppet-twitter

Signed-off-by: Tulir Asokan <tulir@maunium.net>
---
 README.md                                     |   2 +
 ...uring-playbook-bridge-mx-puppet-twitter.md |  34 ++++++
 group_vars/matrix_servers                     |  30 +++++
 .../defaults/main.yml                         | 103 ++++++++++++++++++
 .../tasks/init.yml                            |  70 ++++++++++++
 .../tasks/main.yml                            |  21 ++++
 .../tasks/setup_install.yml                   |  93 ++++++++++++++++
 .../tasks/setup_uninstall.yml                 |  24 ++++
 .../tasks/validate_config.yml                 |  10 ++
 .../templates/config.yaml.j2                  |  92 ++++++++++++++++
 .../matrix-mx-puppet-twitter.service.j2       |  44 ++++++++
 setup.yml                                     |   1 +
 12 files changed, 524 insertions(+)
 create mode 100644 docs/configuring-playbook-bridge-mx-puppet-twitter.md
 create mode 100644 roles/matrix-bridge-mx-puppet-twitter/defaults/main.yml
 create mode 100644 roles/matrix-bridge-mx-puppet-twitter/tasks/init.yml
 create mode 100644 roles/matrix-bridge-mx-puppet-twitter/tasks/main.yml
 create mode 100644 roles/matrix-bridge-mx-puppet-twitter/tasks/setup_install.yml
 create mode 100644 roles/matrix-bridge-mx-puppet-twitter/tasks/setup_uninstall.yml
 create mode 100644 roles/matrix-bridge-mx-puppet-twitter/tasks/validate_config.yml
 create mode 100644 roles/matrix-bridge-mx-puppet-twitter/templates/config.yaml.j2
 create mode 100644 roles/matrix-bridge-mx-puppet-twitter/templates/systemd/matrix-mx-puppet-twitter.service.j2

diff --git a/README.md b/README.md
index a5ec78d3b..fcee4d2da 100644
--- a/README.md
+++ b/README.md
@@ -152,6 +152,8 @@ This playbook sets up your server using the following Docker images:
 
 - [sorunome/mx-puppet-slack](https://hub.docker.com/r/sorunome/mx-puppet-slack) - the [mx-puppet-slack](https://github.com/Sorunome/mx-puppet-slack) bridge to [Slack](https:/slack.com) (optional)
 
+- [sorunome/mx-puppet-twitter](https://hub.docker.com/r/sorunome/mx-puppet-twitter) - the [mx-puppet-twitter](https://github.com/Sorunome/mx-puppet-twitter) bridge to [Twitter](https://twitter.com) (optional)
+
 - [turt2live/matrix-dimension](https://hub.docker.com/r/turt2live/matrix-dimension) - the [Dimension](https://dimension.t2bot.io/) integrations manager (optional)
 
 - [jitsi/web](https://hub.docker.com/r/jitsi/web) - the [Jitsi](https://jitsi.org/) web UI (optional)
diff --git a/docs/configuring-playbook-bridge-mx-puppet-twitter.md b/docs/configuring-playbook-bridge-mx-puppet-twitter.md
new file mode 100644
index 000000000..dd2c9c120
--- /dev/null
+++ b/docs/configuring-playbook-bridge-mx-puppet-twitter.md
@@ -0,0 +1,34 @@
+# Setting up MX Puppet Twitter (optional)
+
+The playbook can install and configure
+[mx-puppet-twitter](https://github.com/Sorunome/mx-puppet-twitter) for you.
+
+See the project page to learn what it does and why it might be useful to you.
+
+To enable the [Twitter](https://twitter.com) bridge, make an app on [developer.twitter.com](https://developer.twitter.com/en/apps)
+and fill out the following playbook configuration.
+
+```yaml
+matrix_mx_puppet_twitter_enabled: true
+matrix_mx_puppet_twitter_consumer_key: ''
+matrix_mx_puppet_twitter_consumer_secret: ''
+matrix_mx_puppet_twitter_access_token: ''
+matrix_mx_puppet_twitter_access_token_secret: ''
+matrix_mx_puppet_twitter_environment: ''
+```
+
+
+## Usage
+
+Once the bot is enabled you need to start a chat with `Twitter Puppet Bridge` with
+the handle `@_twitterpuppet_bot:YOUR_DOMAIN` (where `YOUR_DOMAIN` is your base
+domain, not the `matrix.` domain).
+
+To log in, use `link` and click the link.
+
+Once logged in, send `list` to the bot user to list the available rooms.
+
+Clicking rooms in the list will result in you receiving an invitation to the
+bridged room.
+
+Also send `help` to the bot to see the commands available.
diff --git a/group_vars/matrix_servers b/group_vars/matrix_servers
index 85dab4dd2..275601da3 100755
--- a/group_vars/matrix_servers
+++ b/group_vars/matrix_servers
@@ -393,6 +393,36 @@ matrix_mx_puppet_slack_login_shared_secret: "{{ matrix_synapse_ext_password_prov
 #
 ######################################################################
 
+######################################################################
+#
+# matrix-bridge-mx-puppet-twitter
+#
+######################################################################
+
+# We don't enable bridges by default.
+matrix_mx_puppet_twitter_enabled: false
+
+matrix_mx_puppet_twitter_container_image_self_build: "{{ matrix_architecture != 'amd64'}}"
+
+matrix_mx_puppet_twitter_systemd_required_services_list: |
+  {{
+    ['docker.service']
+    +
+    (['matrix-synapse.service'] if matrix_synapse_enabled else [])
+  }}
+
+matrix_mx_puppet_twitter_appservice_token: "{{ matrix_synapse_macaroon_secret_key | password_hash('sha512', 'mxtwt.as.tok') | to_uuid }}"
+
+matrix_mx_puppet_twitter_homeserver_token: "{{ matrix_synapse_macaroon_secret_key | password_hash('sha512', 'mxtwt.hs.tok') | to_uuid }}"
+
+matrix_mx_puppet_twitter_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-bridge-mx-puppet-twitter
+#
+######################################################################
+
 
 ######################################################################
 #
diff --git a/roles/matrix-bridge-mx-puppet-twitter/defaults/main.yml b/roles/matrix-bridge-mx-puppet-twitter/defaults/main.yml
new file mode 100644
index 000000000..edf15a6d8
--- /dev/null
+++ b/roles/matrix-bridge-mx-puppet-twitter/defaults/main.yml
@@ -0,0 +1,103 @@
+# Mx Puppet Twitter is a Matrix <-> Twitter bridge
+# See: https://github.com/Sorunome/mx-puppet-twitter
+
+matrix_mx_puppet_twitter_enabled: true
+
+matrix_mx_puppet_twitter_container_image_self_build: false
+
+# Controls whether the mx-puppet-twitter container exposes its HTTP port (tcp/8432 in the container).
+#
+# Takes an "<ip>:<port>" or "<port>" value (e.g. "127.0.0.1:8432"), or empty string to not expose.
+matrix_mx_puppet_twitter_container_http_host_bind_port: ''
+
+matrix_mx_puppet_twitter_docker_image: "sorunome/mx-puppet-twitter:latest"
+matrix_mx_puppet_twitter_docker_image_force_pull: "{{ matrix_mx_puppet_twitter_docker_image.endswith(':latest') }}"
+
+matrix_mx_puppet_twitter_base_path: "{{ matrix_base_data_path }}/mx-puppet-twitter"
+matrix_mx_puppet_twitter_config_path: "{{ matrix_mx_puppet_twitter_base_path }}/config"
+matrix_mx_puppet_twitter_data_path: "{{ matrix_mx_puppet_twitter_base_path }}/data"
+matrix_mx_puppet_twitter_docker_src_files_path: "{{ matrix_mx_puppet_twitter_base_path }}/docker-src"
+
+matrix_mx_puppet_twitter_appservice_port: "8432"
+
+matrix_mx_puppet_twitter_homeserver_address: 'http://matrix-synapse:8008'
+matrix_mx_puppet_twitter_homeserver_domain: '{{ matrix_domain }}'
+matrix_mx_puppet_twitter_appservice_address: 'http://matrix-mx-puppet-twitter:{{ matrix_mx_puppet_twitter_appservice_port }}'
+
+matrix_mx_puppet_twitter_consumer_key: ''
+matrix_mx_puppet_twitter_consumer_secret: ''
+matrix_mx_puppet_twitter_access_token: ''
+matrix_mx_puppet_twitter_access_token_secret: ''
+matrix_mx_puppet_twitter_environment: ''
+matrix_mx_puppet_twitter_webhook_path: '/twitter/webhook'
+matrix_mx_puppet_twitter_webhook_url: 'https://{{ matrix_server_fqn_matrix }}{{ matrix_mx_puppet_twitter_webhook_path }}'
+
+# "@user:server.com" to allow specific user
+# "@.*:yourserver.com" to allow users on a specific homeserver
+# "@.*" to allow anyone
+matrix_mx_puppet_twitter_provisioning_whitelist:
+  - "@.*:{{ matrix_domain|regex_escape }}"
+
+# Leave empty to disable blacklist
+# "@user:server.com" disallow a specific user
+# "@.*:yourserver.com" disallow users on a specific homeserver
+matrix_mx_puppet_twitter_provisioning_blacklist: []
+
+# A list of extra arguments to pass to the container
+matrix_mx_puppet_twitter_container_extra_arguments: []
+
+# List of systemd services that mx-puppet-twitter.service depends on.
+matrix_mx_puppet_twitter_systemd_required_services_list: ['docker.service']
+
+# List of systemd services that mx-puppet-twitter.service wants
+matrix_mx_puppet_twitter_systemd_wanted_services_list: []
+
+matrix_mx_puppet_twitter_appservice_token: ''
+matrix_mx_puppet_twitter_homeserver_token: ''
+
+# Can be set to enable automatic double-puppeting via Shared Secret Auth (https://github.com/devture/matrix-synapse-shared-secret-auth).
+matrix_mx_puppet_twitter_login_shared_secret: ''
+
+# Default configuration template which covers the generic use case.
+# You can customize it by controlling the various variables inside it.
+#
+# For a more advanced customization, you can extend the default (see `matrix_mx_puppet_twitter_configuration_extension_yaml`)
+# or completely replace this variable with your own template.
+matrix_mx_puppet_twitter_configuration_yaml: "{{ lookup('template', 'templates/config.yaml.j2') }}"
+
+matrix_mx_puppet_twitter_configuration_extension_yaml: |
+  # Your custom YAML configuration goes here.
+  # This configuration extends the default starting configuration (`matrix_mx_puppet_twitter_configuration_yaml`).
+  #
+  # You can override individual variables from the default configuration, or introduce new ones.
+  #
+  # If you need something more special, you can take full control by
+  # completely redefining `matrix_mx_puppet_twitter_configuration_yaml`.
+
+matrix_mx_puppet_twitter_configuration_extension: "{{ matrix_mx_puppet_twitter_configuration_extension_yaml|from_yaml if matrix_mx_puppet_twitter_configuration_extension_yaml|from_yaml is mapping else {} }}"
+
+# Holds the final configuration (a combination of the default and its extension).
+# You most likely don't need to touch this variable. Instead, see `matrix_mx_puppet_twitter_configuration_yaml`.
+matrix_mx_puppet_twitter_configuration: "{{ matrix_mx_puppet_twitter_configuration_yaml|from_yaml|combine(matrix_mx_puppet_twitter_configuration_extension, recursive=True) }}"
+
+# The prefix for user IDs and aliases
+matrix_mx_puppet_twitter_namespace_prefix: _twitterpuppet_
+
+matrix_mx_puppet_twitter_registration_yaml: |
+  as_token: "{{ matrix_mx_puppet_twitter_appservice_token }}"
+  hs_token: "{{ matrix_mx_puppet_twitter_homeserver_token }}"
+  id: twitter-puppet
+  namespaces:
+    users:
+      - exclusive: true
+        regex: '@{{ matrix_mx_puppet_twitter_namespace_prefix|regex_escape }}.*:{{ matrix_mx_puppet_twitter_homeserver_domain|regex_escape }}'
+    rooms: []
+    aliases:
+      - exclusive: true
+        regex: '#{{ matrix_mx_puppet_twitter_namespace_prefix|regex_escape }}.*:{{ matrix_mx_puppet_twitter_homeserver_domain|regex_escape }}'
+  protocols: []
+  rate_limited: false
+  sender_localpart: _twitterpuppet_bot
+  url: {{ matrix_mx_puppet_twitter_appservice_address }}
+
+matrix_mx_puppet_twitter_registration: "{{ matrix_mx_puppet_twitter_registration_yaml|from_yaml }}"
diff --git a/roles/matrix-bridge-mx-puppet-twitter/tasks/init.yml b/roles/matrix-bridge-mx-puppet-twitter/tasks/init.yml
new file mode 100644
index 000000000..8f4aca6c6
--- /dev/null
+++ b/roles/matrix-bridge-mx-puppet-twitter/tasks/init.yml
@@ -0,0 +1,70 @@
+- set_fact:
+    matrix_systemd_services_list: "{{ matrix_systemd_services_list + ['matrix-mx-puppet-twitter'] }}"
+  when: matrix_mx_puppet_twitter_enabled|bool
+
+# If the matrix-synapse role is not used, these variables may not exist.
+- set_fact:
+    matrix_synapse_container_extra_arguments: >
+      {{ matrix_synapse_container_extra_arguments|default([]) }}
+      +
+      ["--mount type=bind,src={{ matrix_mx_puppet_twitter_config_path }}/registration.yaml,dst=/matrix-mx-puppet-twitter-registration.yaml,ro"]
+
+    matrix_synapse_app_service_config_files: >
+      {{ matrix_synapse_app_service_config_files|default([]) }}
+      +
+      {{ ["/matrix-mx-puppet-twitter-registration.yaml"] }}
+  when: matrix_mx_puppet_twitter_enabled|bool
+
+- block:
+  - name: Fail if matrix-nginx-proxy role already executed
+    fail:
+      msg: >-
+        Trying to append Twitter Appservice's reverse-proxying configuration to matrix-nginx-proxy,
+        but it's pointless since the matrix-nginx-proxy role had already executed.
+        To fix this, please change the order of roles in your plabook,
+        so that the matrix-nginx-proxy role would run after the matrix-mx-puppet-twitter role.
+    when: matrix_nginx_proxy_role_executed|default(False)|bool
+
+  - name: Generate Matrix MX Puppet Twitter proxying configuration for matrix-nginx-proxy
+    set_fact:
+      matrix_mx_puppet_twitter_matrix_nginx_proxy_configuration: |
+        location {{ matrix_mx_puppet_twitter_webhook_path }} {
+        {% if matrix_nginx_proxy_enabled|default(False) %}
+        	{# Use the embedded DNS resolver in Docker containers to discover the service #}
+        	resolver 127.0.0.11 valid=5s;
+        	set $backend "{{ matrix_mx_puppet_twitter_appservice_address }}";
+        	proxy_pass $backend;
+        {% else %}
+        	{# Generic configuration for use outside of our container setup #}
+        	proxy_pass http://127.0.0.1:{{ matrix_mx_puppet_twitter_appservice_port }};
+        {% endif %}
+        }
+
+  - name: Register Twitter Appservice proxying configuration with matrix-nginx-proxy
+    set_fact:
+      matrix_nginx_proxy_proxy_matrix_additional_server_configuration_blocks: |
+        {{
+          matrix_nginx_proxy_proxy_matrix_additional_server_configuration_blocks|default([])
+          +
+          [matrix_mx_puppet_twitter_matrix_nginx_proxy_configuration]
+        }}
+  tags:
+   - always
+  when: matrix_mx_puppet_twitter_enabled|bool
+
+- name: Warn about reverse-proxying if matrix-nginx-proxy not used
+  debug:
+    msg: >-
+      NOTE: You've enabled the Matrix Twitter bridge but are not using the matrix-nginx-proxy
+      reverse proxy.
+      Please make sure that you're proxying the `{{ matrix_mx_puppet_twitter_redirect_path }}`
+      URL endpoint to the matrix-mx-puppet-twitter container.
+      You can expose the container's port using the `matrix_mx_puppet_twitter_container_http_host_bind_port` variable.
+  when: "matrix_mx_puppet_twitter_enabled|bool and matrix_nginx_proxy_enabled is not defined"
+
+# ansible lower than 2.8, does not support docker_image build parameters
+# for self buildig it is explicitly needed, so we rather fail here
+- name: Fail if running on Ansible lower than 2.8 and trying self building
+  fail:
+    msg: "To self build Puppet Twitter image, you should usa ansible 2.8 or higher. E.g. pip contains such packages."
+  when: "ansible_version.major == 2 and ansible_version.minor < 8 and matrix_mx_puppet_twitter_container_image_self_build"
diff --git a/roles/matrix-bridge-mx-puppet-twitter/tasks/main.yml b/roles/matrix-bridge-mx-puppet-twitter/tasks/main.yml
new file mode 100644
index 000000000..af355df36
--- /dev/null
+++ b/roles/matrix-bridge-mx-puppet-twitter/tasks/main.yml
@@ -0,0 +1,21 @@
+- import_tasks: "{{ role_path }}/tasks/init.yml"
+  tags:
+    - always
+
+- import_tasks: "{{ role_path }}/tasks/validate_config.yml"
+  when: "run_setup|bool and matrix_mx_puppet_twitter_enabled|bool"
+  tags:
+    - setup-all
+    - setup-mx-puppet-twitter
+
+- import_tasks: "{{ role_path }}/tasks/setup_install.yml"
+  when: "run_setup|bool and matrix_mx_puppet_twitter_enabled|bool"
+  tags:
+    - setup-all
+    - setup-mx-puppet-twitter
+
+- import_tasks: "{{ role_path }}/tasks/setup_uninstall.yml"
+  when: "run_setup|bool and not matrix_mx_puppet_twitter_enabled|bool"
+  tags:
+    - setup-all
+    - setup-mx-puppet-twitter
diff --git a/roles/matrix-bridge-mx-puppet-twitter/tasks/setup_install.yml b/roles/matrix-bridge-mx-puppet-twitter/tasks/setup_install.yml
new file mode 100644
index 000000000..4773055d7
--- /dev/null
+++ b/roles/matrix-bridge-mx-puppet-twitter/tasks/setup_install.yml
@@ -0,0 +1,93 @@
+---
+
+# If the matrix-synapse role is not used, `matrix_synapse_role_executed` won't exist.
+# We don't want to fail in such cases.
+- name: Fail if matrix-synapse role already executed
+  fail:
+    msg: >-
+      The matrix-bridge-mx-puppet-twitter role needs to execute before the matrix-synapse role.
+  when: "matrix_synapse_role_executed|default(False)"
+
+- name: Ensure MX Puppet Twitter image is pulled
+  docker_image:
+    name: "{{ matrix_mx_puppet_twitter_docker_image }}"
+    source: "{{ 'pull' if ansible_version.major > 2 or ansible_version.minor > 7 else omit }}"
+    force_source: "{{ matrix_mx_puppet_twitter_docker_image_force_pull if ansible_version.major > 2 or ansible_version.minor >= 8 else omit }}"
+    force: "{{ omit if ansible_version.major > 2 or ansible_version.minor >= 8 else matrix_mx_puppet_twitter_docker_image_force_pull }}"
+  when: matrix_mx_puppet_twitter_enabled|bool and not matrix_mx_puppet_twitter_container_image_self_build
+
+- name: Ensure MX Puppet Twitter paths exist
+  file:
+    path: "{{ item.path }}"
+    state: directory
+    mode: 0750
+    owner: "{{ matrix_user_username }}"
+    group: "{{ matrix_user_groupname }}"
+  with_items:
+    - { path: "{{ matrix_mx_puppet_twitter_base_path }}", when: true }
+    - { path: "{{ matrix_mx_puppet_twitter_config_path }}", when: true }
+    - { path: "{{ matrix_mx_puppet_twitter_data_path }}", when: true }
+    - { path: "{{ matrix_mx_puppet_twitter_docker_src_files_path }}", when: "{{ matrix_mx_puppet_twitter_container_image_self_build }}" }
+  when: matrix_mx_puppet_twitter_enabled|bool and item.when|bool
+
+- name: Ensure MX Puppet Twitter repository is present on self build
+  git:
+    repo: https://github.com/Sorunome/mx-puppet-twitter.git
+    dest: "{{ matrix_mx_puppet_twitter_docker_src_files_path }}"
+    force: "yes"
+  when: "matrix_mx_puppet_twitter_enabled|bool and matrix_mx_puppet_twitter_container_image_self_build"
+
+- name: Ensure MX Puppet Twitter Docker image is built
+  docker_image:
+    name: "{{ matrix_mx_puppet_twitter_docker_image }}"
+    source: build
+    build:
+      dockerfile: Dockerfile
+      path: "{{ matrix_mx_puppet_twitter_docker_src_files_path }}"
+      pull: yes
+  when: "matrix_mx_puppet_twitter_enabled|bool and matrix_mx_puppet_twitter_container_image_self_build"
+
+- name: Check if an old database file already exists
+  stat:
+    path: "{{ matrix_mx_puppet_twitter_base_path }}/database.db"
+  register: matrix_mx_puppet_twitter_stat_database
+
+- name: (Data relocation) Ensure matrix-mx-puppet-twitter.service is stopped
+  service:
+    name: matrix-mx-puppet-twitter
+    state: stopped
+    daemon_reload: yes
+  failed_when: false
+  when: "matrix_mx_puppet_twitter_stat_database.stat.exists"
+
+- name: (Data relocation) Move mx-puppet-twitter database file to ./data directory
+  command: "mv {{ matrix_mx_puppet_twitter_base_path }}/database.db {{ matrix_mx_puppet_twitter_data_path }}/database.db"
+  when: "matrix_mx_puppet_twitter_stat_database.stat.exists"
+
+- name: Ensure mx-puppet-twitter config.yaml installed
+  copy:
+    content: "{{ matrix_mx_puppet_twitter_configuration|to_nice_yaml }}"
+    dest: "{{ matrix_mx_puppet_twitter_config_path }}/config.yaml"
+    mode: 0644
+    owner: "{{ matrix_user_username }}"
+    group: "{{ matrix_user_groupname }}"
+
+- name: Ensure mx-puppet-twitter twitter-registration.yaml installed
+  copy:
+    content: "{{ matrix_mx_puppet_twitter_registration|to_nice_yaml }}"
+    dest: "{{ matrix_mx_puppet_twitter_config_path }}/registration.yaml"
+    mode: 0644
+    owner: "{{ matrix_user_username }}"
+    group: "{{ matrix_user_groupname }}"
+
+- name: Ensure matrix-mx-puppet-twitter.service installed
+  template:
+    src: "{{ role_path }}/templates/systemd/matrix-mx-puppet-twitter.service.j2"
+    dest: "/etc/systemd/system/matrix-mx-puppet-twitter.service"
+    mode: 0644
+  register: matrix_mx_puppet_twitter_systemd_service_result
+
+- name: Ensure systemd reloaded after matrix-mx-puppet-twitter.service installation
+  service:
+    daemon_reload: yes
+  when: "matrix_mx_puppet_twitter_systemd_service_result.changed"
diff --git a/roles/matrix-bridge-mx-puppet-twitter/tasks/setup_uninstall.yml b/roles/matrix-bridge-mx-puppet-twitter/tasks/setup_uninstall.yml
new file mode 100644
index 000000000..1d663531b
--- /dev/null
+++ b/roles/matrix-bridge-mx-puppet-twitter/tasks/setup_uninstall.yml
@@ -0,0 +1,24 @@
+---
+
+- name: Check existence of matrix-mx-puppet-twitter service
+  stat:
+    path: "/etc/systemd/system/matrix-mx-puppet-twitter.service"
+  register: matrix_mx_puppet_twitter_service_stat
+
+- name: Ensure matrix-mx-puppet-twitter is stopped
+  service:
+    name: matrix-mx-puppet-twitter
+    state: stopped
+    daemon_reload: yes
+  when: "matrix_mx_puppet_twitter_service_stat.stat.exists"
+
+- name: Ensure matrix-mx-puppet-twitter.service doesn't exist
+  file:
+    path: "/etc/systemd/system/matrix-mx-puppet-twitter.service"
+    state: absent
+  when: "matrix_mx_puppet_twitter_service_stat.stat.exists"
+
+- name: Ensure systemd reloaded after matrix-mx-puppet-twitter.service removal
+  service:
+    daemon_reload: yes
+  when: "matrix_mx_puppet_twitter_service_stat.stat.exists"
diff --git a/roles/matrix-bridge-mx-puppet-twitter/tasks/validate_config.yml b/roles/matrix-bridge-mx-puppet-twitter/tasks/validate_config.yml
new file mode 100644
index 000000000..d13a39e1e
--- /dev/null
+++ b/roles/matrix-bridge-mx-puppet-twitter/tasks/validate_config.yml
@@ -0,0 +1,10 @@
+---
+
+- name: Fail if required settings not defined
+  fail:
+    msg: >-
+      You need to define a required configuration setting (`{{ item }}`).
+  when: "vars[item] == ''"
+  with_items:
+    - "matrix_mx_puppet_twitter_appservice_token"
+    - "matrix_mx_puppet_twitter_homeserver_token"
diff --git a/roles/matrix-bridge-mx-puppet-twitter/templates/config.yaml.j2 b/roles/matrix-bridge-mx-puppet-twitter/templates/config.yaml.j2
new file mode 100644
index 000000000..7d3033b39
--- /dev/null
+++ b/roles/matrix-bridge-mx-puppet-twitter/templates/config.yaml.j2
@@ -0,0 +1,92 @@
+#jinja2: lstrip_blocks: "True"
+bridge:
+  # Port to host the bridge on
+  # Used for communication between the homeserver and the bridge
+  port: {{ matrix_mx_puppet_twitter_appservice_port }}
+  # The host connections to the bridge's webserver are allowed from
+  bindAddress: 0.0.0.0
+  # Public domain of the homeserver
+  domain: {{ matrix_mx_puppet_twitter_homeserver_domain }}
+  # Reachable URL of the Matrix homeserver
+  homeserverUrl: {{ matrix_mx_puppet_twitter_homeserver_address }}
+  {% if matrix_mx_puppet_twitter_login_shared_secret != '' %}
+  loginSharedSecretMap:
+    {{ matrix_domain }}: {{ matrix_mx_puppet_twitter_login_shared_secret }}
+  {% endif %}
+
+twitter:
+  consumerKey: "{{ matrix_mx_puppet_twitter_consumer_key }}"
+  consumerSecret: "{{ matrix_mx_puppet_twitter_consumer_secret }}"
+  accessToken: "{{ matrix_mx_puppet_twitter_access_token }}"
+  accessTokenSecret: "{{ matrix_mx_puppet_twitter_access_token_secret }}"
+  environment: "{{ matrix_mx_puppet_twitter_environment }}"
+  server:
+    url: "{{ matrix_mx_puppet_twitter_webhook_url }}"
+    path: "{{ matrix_mx_puppet_twitter_webhook_path }}"
+
+presence:
+  # Bridge Twitter online/offline status
+  enabled: true
+  # How often to send status to the homeserver in milliseconds
+  interval: 500
+
+provisioning:
+  # Regex of Matrix IDs allowed to use the puppet bridge
+  whitelist: {{ matrix_mx_puppet_twitter_provisioning_whitelist|to_json }}
+    # Allow a specific user
+    #- "@user:server\\.com"
+    # Allow users on a specific homeserver
+    #- "@.*:yourserver\\.com"
+    # Allow anyone
+    #- ".*"
+  # Regex of Matrix IDs forbidden from using the puppet bridge
+  #blacklist:
+    # Disallow a specific user
+    #- "@user:server\\.com"
+    # Disallow users on a specific homeserver
+    #- "@.*:yourserver\\.com"
+  blacklist: {{ matrix_mx_puppet_twitter_provisioning_blacklist|to_json }}
+
+  # Shared secret for the provisioning API for use by integration managers.
+  # If this is not set, the provisioning API will not be enabled.
+  #sharedSecret: random string
+  # Path prefix for the provisioning API. /v1 will be appended to the prefix automatically.
+  apiPrefix: /_matrix/provision
+
+database:
+  # Use Postgres as a database backend
+  # If set, will be used instead of SQLite3
+  # Connection string to connect to the Postgres instance
+  # with username "user", password "pass", host "localhost" and database name "dbname".
+  # Modify each value as necessary
+  #connString: "postgres://user:pass@localhost/dbname?sslmode=disable"
+  # Use SQLite3 as a database backend
+  # The name of the database file
+  filename: /data/database.db
+
+logging:
+  # Log level of console output
+  # Allowed values starting with most verbose:
+  # silly, debug, verbose, info, warn, error
+  console: info
+  # Date and time formatting
+  lineDateFormat: MMM-D HH:mm:ss.SSS
+  # Logging files
+  # Log files are rotated daily by default
+  files:
+    # Log file path
+    - file: "/data/bridge.log"
+      # Log level for this file
+      # Allowed values starting with most verbose:
+      # silly, debug, verbose, info, warn, error
+      level: info
+      # Date and time formatting
+      datePattern: YYYY-MM-DD
+      # Maximum number of logs to keep.
+      # This can be a number of files or number of days.
+      # If using days, add 'd' as a suffix
+      maxFiles: 14d
+      # Maximum size of the file after which it will rotate. This can be a
+      # number of bytes, or units of kb, mb, and gb. If using the units, add
+      # 'k', 'm', or 'g' as the suffix
+      maxSize: 50m
diff --git a/roles/matrix-bridge-mx-puppet-twitter/templates/systemd/matrix-mx-puppet-twitter.service.j2 b/roles/matrix-bridge-mx-puppet-twitter/templates/systemd/matrix-mx-puppet-twitter.service.j2
new file mode 100644
index 000000000..9245f02b2
--- /dev/null
+++ b/roles/matrix-bridge-mx-puppet-twitter/templates/systemd/matrix-mx-puppet-twitter.service.j2
@@ -0,0 +1,44 @@
+#jinja2: lstrip_blocks: "True"
+[Unit]
+Description=Matrix Mx Puppet Twitter server
+{% for service in matrix_mx_puppet_twitter_systemd_required_services_list %}
+Requires={{ service }}
+After={{ service }}
+{% endfor %}
+{% for service in matrix_mx_puppet_twitter_systemd_wanted_services_list %}
+Wants={{ service }}
+{% endfor %}
+
+[Service]
+Type=simple
+ExecStartPre=-{{ matrix_host_command_docker }} kill matrix-mx-puppet-twitter
+ExecStartPre=-{{ matrix_host_command_docker }} rm matrix-mx-puppet-twitter
+
+# Intentional delay, so that the homeserver (we likely depend on) can manage to start.
+ExecStartPre={{ matrix_host_command_sleep }} 5
+
+ExecStart={{ matrix_host_command_docker }} run --rm --name matrix-mx-puppet-twitter \
+			--log-driver=none \
+			--user={{ matrix_user_uid }}:{{ matrix_user_gid }} \
+			--cap-drop=ALL \
+			--network={{ matrix_docker_network }} \
+			{% if matrix_mx_puppet_twitter_container_http_host_bind_port %}
+			-p {{ matrix_mx_puppet_twitter_container_http_host_bind_port }}:{{ matrix_mx_puppet_twitter_appservice_port }} \
+			{% endif %}
+			-e CONFIG_PATH=/config/config.yaml \
+			-e REGISTRATION_PATH=/config/registration.yaml \
+			-v {{ matrix_mx_puppet_twitter_config_path }}:/config:z \
+			-v {{ matrix_mx_puppet_twitter_data_path }}:/data:z \
+			{% for arg in matrix_mx_puppet_twitter_container_extra_arguments %}
+			{{ arg }} \
+			{% endfor %}
+			{{ matrix_mx_puppet_twitter_docker_image }}
+
+ExecStop=-{{ matrix_host_command_docker }} kill matrix-mx-puppet-twitter
+ExecStop=-{{ matrix_host_command_docker }} rm matrix-mx-puppet-twitter
+Restart=always
+RestartSec=30
+SyslogIdentifier=matrix-mx-puppet-twitter
+
+[Install]
+WantedBy=multi-user.target
diff --git a/setup.yml b/setup.yml
index 4831873e2..056e76de8 100755
--- a/setup.yml
+++ b/setup.yml
@@ -18,6 +18,7 @@
     - matrix-bridge-mautrix-whatsapp
     - matrix-bridge-mx-puppet-skype
     - matrix-bridge-mx-puppet-slack
+    - matrix-bridge-mx-puppet-twitter
     - matrix-bridge-sms
     - matrix-synapse
     - matrix-riot-web