DeathByCaptcha

DeathByCaptcha is a Ruby API for DeathByCaptcha - http://www.deathbycaptcha.com

DeathByCaptcha is recommended for solving the most popular CAPTCHA types, such as image to text, reCAPTCHA v2, reCAPTCHA v3 and FunCaptcha.

Installation

Add this line to your application's Gemfile:

gem 'deathbycaptcha', '~> 6.0.0'

And then execute:

$ bundle

Or install it yourself as:

$ gem install deathbycaptcha

Usage

1. Create a client

client = DeathByCaptcha.new('myusername', 'mypassword')

2. Solve a CAPTCHA

There are two types of methods available: decode_* and decode_*!:

• decode_* does not raise exceptions.
• decode_*! may raise a DeathByCaptcha::Error if something goes wrong.

If the solution is not available, an empty CAPTCHA object will be returned.

captcha = client.decode_image!(path: 'path/to/my/captcha/file')
captcha.text # CAPTCHA solution
captcha.id   # CAPTCHA numeric id

Image CAPTCHA

You can specify url, path, file, raw or raw64 when decoding an image.

client.decode_image!(url: 'http://bit.ly/1xXZcKo')
client.decode_image!(path: 'path/to/my/captcha/file')
client.decode_image!(file: File.open('path/to/my/captcha/file', 'rb'))
client.decode_image!(raw: File.open('path/to/my/captcha/file', 'rb').read)
client.decode_image!(raw64: Base64.encode64(File.open('path/to/my/captcha/file', 'rb').read))

reCAPTCHA v2

captcha = client.decode_recaptcha_v2!(
  googlekey:   "6Ld2sf4SAAAAAKSgzs0Q13IZhY02Pyo31S2jgOB5",
  pageurl:     "https://patrickhlauke.github.io/recaptcha/",
  # proxy:     "http://user:[email protected]:3128", # OPTIONAL
  # proxytype: "HTTP",                                # OPTIONAL
)

# The response will be a text (token), which you can access with `text` or `token` methods.

captcha.text
"03AOPBWq_RPO2vLzyk0h8gH0cA2X4v3tpYCPZR6Y4yxKy1s3Eo7CHZRQntxrd..."

captcha.token
"03AOPBWq_RPO2vLzyk0h8gH0cA2X4v3tpYCPZR6Y4yxKy1s3Eo7CHZRQntxrd..."

Parameters:

• googlekey: the Google key for the reCAPTCHA.
• pageurl: the URL of the page with the reCAPTCHA challenge.
• proxy: optional parameter. Proxy URL and credentials (if any).
• proxytype: optional parameter. Proxy connection protocol.

reCAPTCHA v3

captcha = client.decode_recaptcha_v3!(
  googlekey:   "6LdyC2cUAAAAACGuDKpXeDorzUDWXmdqeg-xy696",
  pageurl:     "https://recaptcha-demo.appspot.com/recaptcha-v3-request-scores.php",
  action:      "examples/v3scores",
  # min_score:   0.3,                                 # OPTIONAL
  # proxy:     "http://user:[email protected]:3128", # OPTIONAL
  # proxytype: "HTTP",                                # OPTIONAL
)

# The response will be a text (token), which you can access with `text` or `token` methods.

captcha.text
"03AOPBWq_RPO2vLzyk0h8gH0cA2X4v3tpYCPZR6Y4yxKy1s3Eo7CHZRQntxrd..."

captcha.token
"03AOPBWq_RPO2vLzyk0h8gH0cA2X4v3tpYCPZR6Y4yxKy1s3Eo7CHZRQntxrd..."

Parameters:

• googlekey: the Google key for the reCAPTCHA.
• pageurl: the URL of the page with the reCAPTCHA challenge.
• action: the action name used by the CAPTCHA.
• min_score: optional parameter. The minimal score needed for the CAPTCHA resolution. Defaults to 0.3.
• proxy: optional parameter. Proxy URL and credentials (if any).
• proxytype: optional parameter. Proxy connection protocol.

About the action parameter: in order to find out what this is, you need to inspect the JavaScript code of the website looking for a call to the grecaptcha.execute function.

// Example
grecaptcha.execute('6Lc2fhwTAAAAAGatXTzFYfvlQMI2T7B6ji8UVV_f', { action: "examples/v3scores" })

About the min_score parameter: it's strongly recommended to use a minimum score of 0.3 as higher scores are rare.

FunCaptcha

captcha = client.decode_fun_captcha!(
  publickey:   "12345678-0000-1111-2222-123456789012",
  pageurl:     "https://www.site.with.funcaptcha/example",
  # proxy:     "http://user:[email protected]:3128", # OPTIONAL
  # proxytype: "HTTP",                                # OPTIONAL
)

# The response will be a text (token), which you can access with `text` or `token` methods.

captcha.text
"380633616d817f2b8.2351188603|r=ap-southeast-2|met..."

captcha.token
"380633616d817f2b8.2351188603|r=ap-southeast-2|met..."

Parameters:

• publickey: the public key for the FunCaptcha.
• pageurl: the URL of the page with the challenge.
• proxy: optional parameter. Proxy URL and credentials (if any).
• proxytype: optional parameter. Proxy connection protocol.

3. Retrieve a previously solved CAPTCHA

captcha = client.captcha('28624378') # with 28624378 being the CAPTCHA id

4. Report an incorrectly solved CAPTCHA for a refund

captcha = client.report!('28624378') # with 28624378 being the CAPTCHA id

Warning: abusing on this method may get you banned.

5. Retrieve your user information and credit balance

user = client.user
user.is_banned # true if the user is banned
user.balance   # Credit balance in USD cents
user.rate      # CAPTCHA rate, i.e. charges for one solved CAPTCHA in USD cents
user.id        # Numeric id of your account

6. Retrieve DeathByCaptcha server status

status = client.status
status.todays_accuracy       # Current accuracy of DeathByCaptcha
status.solved_in             # Estimated seconds to solve a CAPTCHA right now
status.is_service_overloaded # true if DeathByCaptcha is overloaded/unresponsive

Notes

Thread-safety

The API is thread-safe, which means it is perfectly fine to share a client instance between multiple threads.

HTTP and Socket clients

The API supports HTTP (recommended) and socket-based connections.

# HTTP-based connection.
client = DeathByCaptcha.new('myusername', 'mypassword')
# or
client = DeathByCaptcha.new('myusername', 'mypassword', :http)

# Socket-based connection.
client = DeathByCaptcha.new('myusername', 'mypassword', :socket)

When using the socket client, make sure that outgoing TCP traffic to api.dbcapi.me to the ports in range 8123-8130 is not blocked by your firewall.

We strongly recommend using the HTTP client (default) because only image CAPTCHAs (decode_image!) are supported by the socket client in this gem. Other CAPTCHA types are supported by the HTTP client only.

Ruby dependencies

DeathByCaptcha >= 5.0.0 does not require specific dependencies. That saves you memory and avoid conflicts with other gems.

Input image format

Any format you use in the decode_image! method (url, file, path, raw or raw64) will always be converted to a raw64, which is a base64-encoded binary string. So, if you already have this format on your end, there is no need for convertions before calling the API.

Our recomendation is to never convert your image format, unless needed. Let the gem convert internally. It may save you resources (CPU, memory and IO).

Versioning

We no longer follow the versioning system of the official clients of DeathByCaptcha. From 5.0.0 onwards, we will use Semantic Versioning.

Contributing

1. Fork it ( https://github.com/infosimples/deathbycaptcha/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Run/add tests (RSpec)
4. Commit your changes (git commit -am 'Add some feature')
5. Push to the branch (git push origin my-new-feature)
6. Create a new Pull Request
7. Yay. Thanks for contributing :)

All contributors: https://github.com/infosimples/deathbycaptcha/graphs/contributors

License

MIT License. Copyright (C) 2011-2022 Infosimples. https://infosimples.com/