.gitignore

@@ -159,3 +159,5 @@ cython_debug/
 #  and can be added to the global gitignore or merged into this file.  For a more nuclear
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 #.idea/
+ansible/credentials/
+terraform/mcaptcha/mcaptcha

Makefile

@@ -24,6 +24,12 @@ define configure_cache
 	ansible-playbook -i $(INVENTORY) -f 10 ./ansible/cache.yml
 endef
 
+define configure_mcaptcha
+	. ./venv/bin/activate &&  \
+	ansible-playbook -i $(INVENTORY) -f 10 ./ansible/mcaptcha.yml
+endef
+
+
 
 define test_base
         . ./venv/bin/activate &&  \
@@ -49,6 +55,19 @@ define test_cache
 
 endef
 
+define test_mcaptcha
+        . ./venv/bin/activate &&  \
+                cd tests/mcaptcha/ && \
+				ANSIBLE_REMOTE_USER=root \
+                py.test --hosts='ansible://mcaptcha_hosts' \
+                -n 10 \
+                --verbose \
+				--ansible-inventory="../../${INVENTORY}" \
+                base.py
+
+endef
+
+
 
 define test_locust
 	. ./venv/bin/activate &&  \
@@ -88,6 +107,13 @@ conf.dos: ## Configure all DoS VMs
 conf.cache: ## Configure all cache VMs
 	$(call configure_cache)
 
+# ```bash
+# INVENTORY=./terraform/dos/hosts.ini make conf.mcaptcha
+# ```
+conf.mcaptcha: ## Configure all mcaptcha VMs
+	$(call configure_mcaptcha)
+
+
 # ```bash
 # INVENTORY=./terraform/dos/hosts.ini make conf.ping
 # ```
@@ -105,7 +131,8 @@ test.base: ## Test base configuration on all VMs
 test.cache: ## Test cache configuration
 	$(call test_cache)
 
-
+test.mcaptcha: ## Test mcaptcha configuration
+	$(call test_mcaptcha)
 
 help: ## Prints help for targets with comments
 	@cat $(MAKEFILE_LIST) | grep -E '^[a-zA-Z_-].+:.*?## .*$$' | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'

ansible/artifacts/mcaptcha/mcaptcha.service

@@ -0,0 +1,29 @@
+[Unit]
+Description=mCaptcha: PoW CAPTCHA system
+After=syslog.target
+After=network.target
+###
+# Don't forget to add the database service dependencies
+###
+#
+#Wants=mariadb.service
+#After=mariadb.service
+#
+Wants=postgresql.service
+After=postgresql.service
+#
+#Wants=redis.service
+#After=redis.service
+
+[Service]
+RestartSec=2s
+Type=simple
+User=mcaptcha
+Group=mcaptcha
+WorkingDirectory=/home/mcaptcha/
+ExecStart=/usr/local/bin/mcaptcha
+Restart=always
+Environment=USER=mcaptcha HOME=/home/mcaptcha
+
+[Install]
+WantedBy=multi-user.target

ansible/mcaptcha.yml

@@ -0,0 +1,98 @@
+# SPDX-FileCopyrightText: 2023 Aravinth Manivannan <realaravinth@batsense.net>
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+#---
+- name: Base configuration
+  ansible.builtin.import_playbook: base.yml
+
+- name: Install and configure postgres
+  hosts: mcaptcha_hosts
+  become: yes
+  vars_files:
+    - vars/mcaptcha/vars.yml
+    - vars/mcaptcha/db-common.yml
+    - vars/mcaptcha/postgresql.yml
+  tasks:
+    - ansible.builtin.include_role:
+        name: geerlingguy.postgresql
+      when:
+        database_type == "postgres"
+
+- name: Install and configure mariadb
+  hosts: mcaptcha_hosts
+  become: yes
+  vars_files:
+    - vars/mcaptcha/vars.yml
+    - vars/mcaptcha/db-common.yml
+    - vars/mcaptcha/mariadb.yml.yml
+  tasks:
+    - ansible.builtin.include_role:
+        name: geerlingguy.mysql
+      when:
+        database_type == "mariadb"
+
+- name: Install and configure cache
+  hosts: mcaptcha_hosts
+  become: yes
+  vars_files:
+    - vars/mcaptcha/vars.yml
+  tasks:
+    - name: conditionally install redis cache
+      ansible.builtin.include_role:
+        name: cache
+      when: cache_type == "redis"
+
+- name: Install mCaptcha binary
+  hosts: mcaptcha_hosts
+  remote_user: atm
+  vars_files:
+    - vars/mcaptcha/vars.yml
+    - vars/mcaptcha/db-common.yml
+    - vars/mcaptcha/mcaptcha.yml
+  roles:
+    - mcaptcha
+  tasks:
+    - name: restart mcaptcha
+      debug:
+        msg: "mCaptcha successfully deployed to {{ mcaptcha_server_hostname }}"
+      notify: restart mcaptcha
+
+    - name: Install git, zip, nginx, wget, curl & other utils
+      become: true
+      ansible.builtin.apt:
+        update_cache: true
+        cache_valid_time: 3600
+        pkg:
+          - nginx
+          - ufw
+
+    - name: Copy nginx vhost
+      become: true
+      ansible.builtin.template:
+        src: ./templates/mcaptcha/nginx.vhost.j2
+        dest: "/etc/nginx/sites-available/{{ mcaptcha_server_hostname }}"
+        owner: root
+        group: root
+        force: true
+        mode: "0644"
+
+    - name: Copy nginx vhost
+      become: true
+      ansible.builtin.file:
+        src: "/etc/nginx/sites-available/{{ mcaptcha_server_hostname }}"
+        dest: "/etc/nginx/sites-enabled/{{ mcaptcha_server_hostname }}"
+        state: link
+
+    - name: Restart nginx
+      become: true
+      ansible.builtin.service:
+        name: nginx
+        state: restarted
+
+    - name: Allow port 80 and enable UFW
+      become: true
+      community.general.ufw:
+        state: enabled
+        rule: allow
+        proto: tcp
+        port: "80"

ansible/roles/cache/tasks/main.yml

@@ -72,15 +72,7 @@
     force: true
     mode: "0755"
 
-#    - name: Delete download dir
-#      ansible.builtin.file:
-#        path: /tmp/cache-lib
-#        state: absent
-
-- name: Allow port 6379 for redis
-  become: true
-  community.general.ufw:
-    state: enabled
-    rule: allow
-    proto: tcp
-    port: "6379"
+- name: Delete download dir
+  ansible.builtin.file:
+    path: /tmp/cache-lib
+    state: absent

ansible/roles/mcaptcha/handlers/main.yml

@@ -0,0 +1,7 @@
+- name: restart mcaptcha
+  listen: restart mcaptcha
+  become: true
+  ansible.builtin.service:
+    name: mcaptcha
+    enabled: true
+    state: restarted

ansible/roles/mcaptcha/tasks/main.yml

@@ -0,0 +1,82 @@
+# SPDX-FileCopyrightText: 2023 Aravinth Manivannan <realaravinth@batsense.net>
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+---
+- name: Create mCaptcha systemd user
+  become: true
+  ansible.builtin.user:
+    name: mcaptcha
+    state: present
+    system: true
+    comment: mCaptcha systemd user
+
+- name: Create download dir
+  ansible.builtin.file:
+    path: /tmp/mcaptcha-dl
+    state: directory
+    mode: "0755"
+
+- name: Download binary
+  ansible.builtin.get_url:
+    url: https://dl.mcaptcha.org/mcaptcha/mCaptcha/master/mcaptcha-master-linux-amd64.tar.gz
+    dest: /tmp/mcaptcha-dl
+    checksum: sha256:https://dl.mcaptcha.org/mcaptcha/mCaptcha/master/mcaptcha-master-linux-amd64.tar.gz.sha256
+
+- name: Extract mcaptcha-master-linux-amd64.tar.gz into /var/lib/foo
+  ansible.builtin.unarchive:
+    src: /tmp/mcaptcha-dl/mcaptcha-master-linux-amd64.tar.gz
+    remote_src: true
+    dest: /tmp/mcaptcha-dl/
+
+- name: Install binary
+  become: true
+  notify: restart mcaptcha
+  ansible.builtin.copy:
+    src: /tmp/mcaptcha-dl/mcaptcha-master-linux-amd64/mcaptcha
+    remote_src: true
+    dest: /usr/local/bin/mcaptcha
+    owner: root
+    group: root
+    force: true
+    mode: "0755"
+
+- name: Copy mCaptcha systemd servicefile
+  become: true
+  ansible.builtin.copy:
+    src: ./artifacts/mcaptcha/mcaptcha.service
+    dest: /etc/systemd/system/
+    owner: root
+    group: root
+    force: true
+    mode: "0777"
+
+- name: Create mCaptcha config dir
+  become: true
+  ansible.builtin.file:
+    path: /etc/mcaptcha
+    state: directory
+    mode: "0755"
+
+- name: Copy mCaptcha systemd servicefile
+  become: true
+  notify: restart mcaptcha
+  ansible.builtin.template:
+    src: ./templates/mcaptcha/config.toml.j2
+    dest: /etc/mcaptcha/config.toml
+    owner: root
+    group: root
+    force: true
+    mode: "0644"
+
+- name: Run mCaptcha as a systemd service
+  become: true
+  ansible.builtin.systemd_service:
+    name: mcaptcha
+    daemon_reload: true
+    state: started
+    enabled: true
+
+- name: Delete download dir
+  ansible.builtin.file:
+    path: /tmp/mcaptcha-dl
+    state: absent

ansible/templates/mcaptcha/config.toml.j2

@@ -0,0 +1,81 @@
+{% if database_type == 'postgres' %}
+	{% set mcaptcha_database_url = "postgres://" ~ database_owner ~ ":" ~ database_password ~ "@" ~ "localhost:5432/" ~ database_name %}
+{% else %}
+	{% set mcaptcha_database_url = "mysql://" ~ database_owner ~ ":" ~ database_password ~ "@" ~ "localhost/" ~ database_name %}
+{% endif %}
+
+
+
+debug = "{{ mcaptcha_debug | default('false') }}"
+source_code = "{{ mcaptcha_source_code  | default('https://github.com/mCaptcha/mCaptcha') }}"
+commercial = "{{ mcaptcha_commercial | default('false') }}"
+allow_demo = "{{ mcaptcha_allow_demo | default('false')  }}"
+allow_registration = "{{ mcaptcha_allow_registration | default('true') }}"
+
+[server]
+# Please set a unique value, your mCaptcha instance's security depends on this being 
+# unique
+cookie_secret = "{{ mcaptcha_server_cookie_secret }}"
+# The port at which you want authentication to listen to
+# takes a number, choose from 1000-10000 if you dont know what you are doing
+port = "{{ mcaptcha_server_port | default(7000) }}"
+#IP address. Enter 0.0.0.0 to listen on all available addresses
+ip= "{{ mcaptcha_server_bind | default('127.0.0.1') }}"
+# enter your hostname, eg: example.com
+domain = "{{ mcaptcha_server_hostname }}"
+# Set true if you have setup TLS with a reverse proxy like Nginx.
+# Does HTTPS redirect and sends additional headers that can only be used if
+# HTTPS available to improve security
+proxy_has_tls = "{{ mcaptcha_proxy_has_tls | default('false') }}"
+
+[captcha]
+# Please set a unique value, your mCaptcha instance's security depends on this being 
+# unique
+salt = "{{ mcaptcha_captcha_salt }}"
+# garbage collection period to manage mCaptcha system
+# leave untouched if you don't know what you are doing
+gc = "{{ mcaptcha_captcha_gc | default(30) }}" #30
+runners = "{{ mcaptcha_captcha_runners | default(4) }}" #4
+queue_length = "{{ mcaptcha_captcha_queue_length | default(2000) }}" #2000
+enable_stats = "{{ mcaptcha_captcha_enable_stats | default('true') }}" #true
+
+[captcha.default_difficulty_strategy]
+avg_traffic_difficulty = "{{ mcaptcha_captcha_default_difficulty_strategy_avg_traffic_difficulty | default(50000) }}" # 50000 # almost instant solution
+peak_sustainable_traffic_difficulty = "{{ mcaptcha_captcha_default_difficulty_strategy_peak_sustainable_traffic_difficulty | default(3000000) }}" # 3000000 # roughly 1.5s
+broke_my_site_traffic_difficulty = "{{ mcaptcha_captcha_default_difficulty_strategy_broke_my_site_traffic_difficulty | default(5000000) }}" # 5000000  # greater than 3.5s
+# cooldown period in seconds
+duration = "{{ mcaptcha_captcha_default_difficulty_strategy_avg_duration | default(30) }}" # 30
+
+[database]
+# This section deals with the database location and how to access it
+# Please note that at the moment, we have support for only postgresqa.
+# Example, if you are Batman, your config would be:
+# url = "postgres://batman:password@batcave.org:5432/batcave"
+# database_type = "postgres"
+# pool = 4
+url = "{{ mcaptcha_database_url }}" # "postgres://example.org" # hack for tests to run successfully
+
+pool = "{{ mcaptcha_database_pool | default(4) }}" #4
+
+
+{% if cache_type == 'redis' %}
+[redis]
+# This section deals with the database location and how to access it
+# Please note that at the moment, we have support for only postgresqa.
+# Example, if you are Batman, your config would be:
+url = "{{ mcaptcha_redis_url }}" #"redis://127.0.0.1"
+pool =  "{{ mcaptcha_redis_pool | default(4) }}" #4
+{% endif %}
+
+[smtp]
+from = "{{ mcaptcha_smtp_from }}" # "admin@localhost"
+reply =  "{{ mcaptcha_smtp_reply }}" #"admin@localhost"
+url =  "{{ mcaptcha_smtp_url }}" #"127.0.0.1"
+port =  "{{ mcaptcha_smtp_port }}" #10025
+username =  "{{ mcaptcha_smtp_username }}" #"admin"
+password =  "{{ mcaptcha_smtp_password }}" #"password"
+
+#[survey]
+#nodes = ["http://localhost:7001"]
+#rate_limit = 10 # upload every hour
+#instance_root_url = "http://localhost:7000"

ansible/templates/mcaptcha/nginx.vhost.j2

@@ -0,0 +1,12 @@
+server {
+	listen 80;
+	listen [::]:80;
+    server_name {{ mcaptcha_server_hostname }};
+    error_log /var/log/nginx/"{{ mcaptcha_server_hostname }}".error.log;
+    access_log /var/log/nginx/"{{ mcaptcha_server_hostname }}".access.log;
+
+	location / {
+			proxy_pass http://{{ mcaptcha_server_bind }}:{{ mcaptcha_server_port }};
+			proxy_set_header Host $host;
+	}
+}

ansible/vars/mcaptcha/db-common.yml

@@ -0,0 +1,3 @@
+database_owner: "mcaptcha"
+database_name: "mcaptcha"
+database_password: "{{ lookup('ansible.builtin.password', 'credentials/database_password', chars=['ascii_leters', 'digits'], length=32) }}"

ansible/vars/mcaptcha/mariadb.yml

@@ -0,0 +1,136 @@
+---
+# Set this to the user ansible is logging in as - should have root
+# or sudo access
+mysql_user_home: /home/atm
+mysql_user_name: atm
+
+# The default root user installed by mysql - almost always root
+mysql_root_home: /root
+mysql_root_username: root
+mysql_root_password: root
+
+# Set this to `true` to forcibly update the root password.
+mysql_root_password_update: true
+mysql_user_password_update: true
+
+mysql_enabled_on_startup: true
+
+# Whether my.cnf should be updated on every run.
+overwrite_global_mycnf: true
+
+# The following variables have a default value depending on operating system.
+# mysql_config_file: /etc/my.cnf
+# mysql_config_include_dir: /etc/my.cnf.d
+
+# Pass in a comma-separated list of repos to use (e.g. "remi,epel"). Used only
+# for RedHat systems (and derivatives).
+mysql_enablerepo: ""
+
+# Define a custom list of packages to install; if none provided, the default
+# package list from vars/[OS-family].yml will be used.
+# mysql_packages:
+#   - mysql
+#   - mysql-server
+#   - MySQL-python
+
+mysql_python_package_debian: python3-mysqldb
+
+# MySQL connection settings.
+mysql_port: "3306"
+mysql_bind_address: '0.0.0.0'
+mysql_skip_name_resolve: false
+mysql_datadir: /var/lib/mysql
+mysql_sql_mode: ~
+# The following variables have a default value depending on operating system.
+# mysql_pid_file: /var/run/mysqld/mysqld.pid
+# mysql_socket: /var/lib/mysql/mysql.sock
+
+# Log file settings.
+mysql_log_file_group: mysql
+
+# Slow query log settings.
+mysql_slow_query_log_enabled: false
+mysql_slow_query_time: "2"
+# The following variable has a default value depending on operating system.
+# mysql_slow_query_log_file: /var/log/mysql-slow.log
+
+# Memory settings (default values optimized ~512MB RAM).
+mysql_key_buffer_size: "256M"
+mysql_max_allowed_packet: "64M"
+mysql_table_open_cache: "256"
+mysql_sort_buffer_size: "1M"
+mysql_read_buffer_size: "1M"
+mysql_read_rnd_buffer_size: "4M"
+mysql_myisam_sort_buffer_size: "64M"
+mysql_thread_cache_size: "8"
+mysql_query_cache_type: "0"
+mysql_query_cache_size: "16M"
+mysql_query_cache_limit: "1M"
+mysql_max_connections: "151"
+mysql_tmp_table_size: "16M"
+mysql_max_heap_table_size: "16M"
+mysql_group_concat_max_len: "1024"
+mysql_join_buffer_size: "262144"
+
+# Other settings.
+mysql_lower_case_table_names: "0"
+mysql_wait_timeout: "28800"
+mysql_event_scheduler_state: "OFF"
+
+# InnoDB settings.
+mysql_innodb_file_per_table: "1"
+# Set .._buffer_pool_size up to 80% of RAM but beware of setting too high.
+mysql_innodb_buffer_pool_size: "256M"
+# Set .._log_file_size to 25% of buffer pool size.
+mysql_innodb_log_file_size: "64M"
+mysql_innodb_log_buffer_size: "8M"
+mysql_innodb_flush_log_at_trx_commit: "1"
+mysql_innodb_lock_wait_timeout: "50"
+
+# These settings require MySQL > 5.5.
+mysql_innodb_large_prefix: "1"
+mysql_innodb_file_format: "barracuda"
+
+# mysqldump settings.
+mysql_mysqldump_max_allowed_packet: "64M"
+
+# Logging settings.
+mysql_log: ""
+# The following variables have a default value depending on operating system.
+# mysql_log_error: /var/log/mysql/mysql.err
+# mysql_syslog_tag: mysql
+
+mysql_config_include_files: []
+#  - src: path/relative/to/playbook/file.cnf
+#  - { src: path/relative/to/playbook/anotherfile.cnf, force: yes }
+
+# Databases.
+mysql_databases: 
+   - name: mcaptcha
+     collation: utf8_general_ci
+     encoding: utf8
+     replicate: 1
+
+# Users.
+mysql_users:
+   - name: mcaptcha
+     priv: "mcaptcha.*:ALL"
+     password: "{{ database_password }}"
+
+mysql_disable_log_bin: false
+
+# Replication settings (replication is only enabled if master/user have values).
+mysql_server_id: "1"
+mysql_max_binlog_size: "100M"
+mysql_binlog_format: "ROW"
+mysql_expire_logs_days: "10"
+mysql_replication_role: ''
+mysql_replication_master: ''
+mysql_replication_master_inventory_host: "{{ mysql_replication_master }}"
+
+# Same keys as `mysql_users` above.
+mysql_replication_user:
+   - name: mcaptcha
+     host: 127.0.0.1
+
+mysql_hide_passwords: false

ansible/vars/mcaptcha/mcaptcha.yml

@@ -0,0 +1,61 @@
+mcaptcha_debug: false
+# mcaptcha_source_code: 'https://github.com/mCaptcha/mCaptcha'
+mcaptcha_commercial: false
+mcaptcha_allow_demo: false
+mcaptcha_allow_registration: false
+
+# Please set a unique value, your mCaptcha instance's security depends on this being
+# unique
+mcaptcha_server_cookie_secret: "{{ lookup('ansible.builtin.password', 'credentials/mcaptcha_server_cookie_secret', chars=['ascii_leters', 'digits'], length=32) }}"
+mcaptcha_server_port: 7000
+mcaptcha_server_bind: "127.0.0.1"
+mcaptcha_server_hostname: "mcaptcha.local"
+# Set true if you have setup TLS with a reverse proxy like Nginx.
+# Does HTTPS redirect and sends additional headers that can only be used if
+# HTTPS available to improve security
+#mcaptcha_proxy_has_tls: false
+
+# Please set a unique value, your mCaptcha instance's security depends on this being
+# unique
+mcaptcha_captcha_salt: "{{ lookup('ansible.builtin.password', 'credentials/mcaptcha_captha_salt', chars=['ascii_leters', 'digits'], length=32) }}"
+# garbage collection period to manage mCaptcha system
+# leave untouched if you don't know what you are doing
+# mcaptcha_captcha_gc: 30
+# mcaptcha_captcha_runners: 4
+# mcaptcha_captcha_queue_length: 2000
+mcaptcha_captcha_enable_stats: true
+
+#mcaptcha_captcha_default_difficulty_strategy_avg_traffic_difficulty: 50000 # almost instant solution
+#mcaptcha_captcha_default_difficulty_strategy_peak_sustainable_traffic_difficulty: 3000000 # roughly 1.5s
+#mcaptcha_captcha_default_difficulty_strategy_broke_my_site_traffic_difficulty: 5000000  # greater than 3.5s
+# cooldown period in seconds
+mcaptcha_captcha_default_difficulty_strategy_avg_duration: 30
+
+  #{% if database_type == 'postgres' %}
+  #  {% set mcaptcha_database_url = "postgres://{{ database_owner }}:{{ database_password }}@localhost:5432/{{ database_name }}" %}
+  #{% else %}
+  #  {% set mcaptcha_database_url = "mysql://{{ database_owner }}:{{ database_password }}@localhost/{{ database_name }}" %}
+  #{% endif %}
+#mcaptcha_database_url: "mysql://{{ database_owner }}:{{ database_password }}@localhost/{{ database_name }}"
+  #mcaptcha_database_url: "postgres://{{ database_owner }}:{{ database_password }}@localhost:5432/{{ database_name }}"
+#  mysql://mcaptcha:password@localhost/mcaptcha"
+mcaptcha_database_pool: 4
+  #mcaptcha_database_url: "{{ mcaptcha_database_url }}"
+
+mcaptcha_redis_url: "redis://127.0.0.1"
+mcaptcha_redis_pool: 4
+
+mcaptcha_redis_url: "redis://127.0.0.1"
+mcaptcha_redis_pool: 4
+
+
+mcaptcha_smtp_from: "admin@localhost"
+mcaptcha_smtp_reply: "admin@localhost"
+mcaptcha_smtp_url: "127.0.0.1"
+mcaptcha_smtp_port: 10025
+mcaptcha_smtp_username: "admin"
+mcaptcha_smtp_password: "password"
+#[survey]
+#nodes = ["http://localhost:7001"]
+#rate_limit = 10 # upload every hour
+#instance_root_url = "http://localhost:7000"

ansible/vars/mcaptcha/postgresql.yml

@@ -0,0 +1,48 @@
+# Set postgresql state when configuration changes are made. Recommended values:
+# `restarted` or `reloaded`
+postgresql_restarted_state: "restarted"
+
+postgresql_python_library: python-psycopg2
+postgresql_user: postgres
+postgresql_group: postgres
+
+# `md5` or `scram-sha-256` (https://www.postgresql.org/docs/10/auth-methods.html)
+postgresql_auth_method: "md5"
+
+postgresql_unix_socket_directories:
+  - /var/run/postgresql
+
+postgresql_service_state: started
+postgresql_service_enabled: true
+
+# Global configuration options that will be set in postgresql.conf.
+postgresql_global_config_options:
+  - option: unix_socket_directories
+    value: '{{ postgresql_unix_socket_directories | join(",") }}'
+  - option: log_directory
+    value: 'log'
+
+# Host based authentication (hba) entries to be added to the pg_hba.conf. This
+# variable's defaults reflect the defaults that come with a fresh installation.
+postgresql_hba_entries:
+  - {type: local, database: all, user: postgres, auth_method: peer}
+  - {type: local, database: all, user: all, auth_method: peer}
+  - {type: host, database: all, user: all, address: '127.0.0.1/32', auth_method: "{{ postgresql_auth_method }}"}
+  - {type: host, database: all, user: all, address: '::1/128', auth_method: "{{ postgresql_auth_method }}"}
+
+# Debian only. Used to generate the locales used by PostgreSQL databases.
+postgresql_locales:
+  - 'en_US.UTF-8'
+
+# Users to ensure exist.
+postgresql_users:
+ - name: "{{ database_owner }}" #required; the rest are optional
+   password: "{{ database_password }}"
+
+# Databases to ensure exist.
+postgresql_databases:
+ - name: "{{ database_name }}" # required; the rest are optional
+   owner: "{{ database_owner }}"
+
+# Whether to output user data when managing users.
+postgres_users_no_log: true

ansible/vars/mcaptcha/vars.yml

@@ -0,0 +1,2 @@
+database_type: "postgres" # options: "mariadb", "postgres"
+cache_type: "redis" # options: "embedded", "redis"

tests/mcaptcha/base.py

@@ -0,0 +1,39 @@
+# SPDX-FileCopyrightText: 2023 Aravinth Manivannan <realaravinth@batsense.net>
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
+import os
+import requests
+
+
+def test_mcaptcha_nginx_is_listening(host):
+    socket = host.socket(f"tcp://127.0.0.1:80")
+    assert socket.is_listening
+
+
+def test_mcaptcha_config_exists(host):
+    config = host.file("/etc/mcaptcha/config.toml")
+    assert config.exists
+    assert config.is_file
+
+
+def test_mcaptcha_health(host):
+    url = f"http://{host.interface.default().addresses[0]}/api/v1/meta/health"
+    resp = requests.get(url, headers={"Host": "mcaptcha.local"})
+    assert resp.status_code == 200
+    data = resp.json()
+    if "redis" in data:
+        assert data["redis"] is True
+    assert data["db"] is True
+
+
+def test_nginx_service_running_and_enabled(host):
+    service = host.service("nginx")
+    assert service.is_running
+    assert service.is_enabled
+
+
+def test_mcaptcha_service_running_and_enabled(host):
+    service = host.service("mcaptcha")
+    assert service.is_running
+    assert service.is_enabled