prosopo

A Prosopo captcha verifier for Crystal apps.

Note

The original repository is hosted at https://codeberg.org/fluck/prosopo.

Installation

1. Add the dependency to your shard.yml:

dependencies:
  prosopo:
    codeberg: fluck/prosopo

2. Run shards install

Usage

Configuration

Require the shard in your app:

require "prosopo"

Add your configuration:

Prosopo.configure do |settings|
  # Required
  settings.site_key = ENV.fetch("PROSOPO_SITE_KEY")
  settings.secret_key = ENV.fetch("PROSOPO_SECRET_KEY")

  # Optional
  settings.endpoint = "https://api.prosopo.io/siteverify" 
  settings.timeout = 5.seconds
  settings.retry_attempts = 3
  settings.retry_delays = [0.5, 1, 2]
  settings.script = "https://js.prosopo.io/js/procaptcha.bundle.js"
end

Front-end

Include the tags mixin:

abstract class BasePage
  include Prosopo::Tags
end

Then add the Prosopo script in the head of your page:

<%= prosopo_script %>

Or for Lucky Framework:

lucky_prosopo_script

This helper accepts the following options:

<%= prosopo_script(
  async: false,           # default is true
  defer: false            # default is true
) %>

Note: All additional named arguments will be rendered as attributes on the HTML tag, with underscores converted to hyphens in the attribute names.

Next, add the Prosopo container element:

<%= prosopo_container %>

Or for Lucky Framework:

lucky_prosopo_container

This helper accepts a class name:

<%= prosopo_container(class_name: "my-class-name") %>

All other named arguments will be rendered as attributes on the HTML tag, with underscores converted to hyphens in the attribute names:

<%= prosopo_container(data_theme: "dark", data_callback: "myCallback") %>

Look at the Prosopo docs for all the available configuration options.

Back-end

Verify validity of the token:

prosopo_token = params["procaptcha-response"]
ip_address = request.remote_address # optional

Prosopo.verify?(prosopo_token, ip_address)
# => true

Or with more detail:

result = Prosopo.verify(prosopo_token, ip_address)

if result.verified?
  puts "Verification successful!"
  puts "Status: #{result.status}"
else
  puts "Verification failed"
  
  result.errors.each do |error|
    puts "Error: #{error}"
  end
end

Handling exceptions:

begin
  result = Prosopo.verify(prosopo_token)
  
  if result.verified?
    # Handle successful verification
  else
    # Handle captcha failure (invalid response, expired, etc.)
  end
rescue Prosopo::RequestError
  # Network connectivity issues, timeouts, connection failures
rescue Prosopo::ResponseError
  # Invalid JSON response, unexpected HTTP status codes
end

Contributing

1. Fork it (https://codeberg.org/fluck/prosopo/fork)
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'feat: add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request

Contributors

• Wout - creator and maintainer