Installation

Support Table

Decidim Version	Supported?
0.24	no
0.26	yes
0.27	yes
0.28	no
0.29	yes

Install the anti-spam

Add the gem to your Gemfile

gem "decidim-spam_signal", "~> 0.4.0"

Install the module

bundle install

Copy migrations files

bundle exec rails decidim_spam_signal_admin:install:migrations

Migrate

bundle exec rails db:migrate

(you can make sure migrations pass with bundle exec rails db:migrate:status)

Configure Nginx GeoIP

The 0.4.0 version introduces country and continent verification to prevent certain actions from locations where spam could originate.

To do this, the module requires additional headers, which can be configured through Nginx.

First of all, install the GeoIP module for Nginx. Use the reference manual to do this.

• https://docs.nginx.com/nginx/admin-guide/dynamic-modules/geoip2/

Next, configure the configuration files as shown below:

In the file #/etc/nginx/nginx.conf
Insert in the section server/location

#/etc/nginx/nginx.conf
proxy_set_header X-Country $geoip2_data_country_code;
proxy_set_header X-Continent $geoip2_data_continent_code;
proxy_set_header GEOIP "enabled";
proxy_set_header COUNTRY $geoip2_data_country_code;
proxy_set_header CONTINENT $geoip2_data_continent_code;

In the file /etc/nginx/conf.d/geoip2-mapping.conf

#/etc/nginx/conf.d/geoip2-mapping.conf
geoip2 /usr/local/share/GeoIP/GeoLite2-City.mmdb {
    auto_reload                    5m;
    $geoip2_metadata_country_build metadata build_epoch;
    $geoip2_data_country_code      default=US source=$http_x_forwarded_for country iso_code;
    $geoip2_data_country_name      source=$http_x_forwarded_for country names en;
    $geoip2_data_continent_code    source=$http_x_forwarded_for continent code;
}

map $geoip2_data_country_code $allowed_country {
    default yes;
    include includes/geoip2-defaultlist.conf;
}

In the file /etc/nginx/includes/geoip2-server.conf

#/etc/nginx/includes/geoip2-server.conf
set $country_code $geoip2_data_country_code;
set $country_name $geoip2_data_country_name;