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Programming language: Crystal
License: MIT License
Tags: HTTP    

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README

Crystal Lang NTLM Auth

Build Status

Communicate with servers that implement NTLM auth.

Installation

  1. Add the dependency to your shard.yml:
   dependencies:
     ntlm:
       github: spider-gazelle/ntlm
  1. Run shards install

Usage

Authenticate a HTTP request


require "http/client"
require "ntlm"

route = "/terrible/soap/api"
username = "username"
password = "password"

# NOTE:: domain is not always required, this can sometimes be left `nil`
domain = "DOMAIN"

client = HTTP::Client.new "corporate.service"
response = client.get route

if response.status_code == 401 && response.headers["WWW-Authenticate"]?
  supported = response.headers.get("WWW-Authenticate")
  raise "doesn't support NTLM auth: #{supported}" unless supported.includes?("NTLM")

  # Negotiate NTLM
  response = client.get route, HTTP::Headers{"Authorization" => NTLM.negotiate_http(domain)}

  # Extract the challenge
  raise "unexpected response #{response.status_code}" unless response.status_code == 401 && response.headers["WWW-Authenticate"]?
  challenge = response.headers["WWW-Authenticate"]

  # Authenticate the client
  response = client.get route, HTTP::Headers{"Authorization" => NTLM.authenticate_http(challenge, username, password)}
end

response