github - legacy token check support for GHE

lib/travis/config/defaults.rb

@@ -40,7 +40,7 @@ def logs_api_auth_token
             sidekiq:       { namespace: 'sidekiq', pool_size: 1 },
             smtp:          {},
             email:         {},
-            github:        { api_url: 'https://api.github.com', token: 'travisbot-token' },
+            github:        { api_url: 'https://api.github.com', token: 'travisbot-token', enterprise_legacy_oauth: true },
             async:         {},
             notifications: [], # TODO rename to event.handlers
             metrics:       { reporter: 'librato' },

lib/travis/github.rb

@@ -1,6 +1,37 @@
 require 'gh'
 require 'core_ext/hash/compact'
 
+GH::Remote.class_eval do
+  def http(verb, url, headers = {}, &block)
+    body = headers.delete :body
+    connection.run_request(verb, url, body, headers, &block)
+  rescue Exception => error
+    raise Error.new(error, nil, :verb => verb, :url => url, :headers => headers)
+  end
+end
+
+GH::TokenCheck.class_eval do
+
+    def check_token
+      return unless @check_token and client_id and client_secret and token
+      @check_token = false
+      auth_header = "Basic %s" % Base64.encode64("#{client_id}:#{client_secret}").gsub("\n", "")
+
+      if is_legacy?
+        http :head, path_for("/applications/#{client_id}/tokens/#{token}?client_id=#{client_id}&client_secret=#{client_secret}"), "Authorization" => auth_header
+      else
+        http :post, path_for("/applications/#{client_id}/token"), :body => "{\"access_token\": \"#{token}\"}", "Authorization" => auth_header
+      end
+    rescue GH::Error(:response_status => 404) => error
+      raise GH::TokenInvalid, error
+    end
+
+    def is_legacy?
+      Travis.config.github.enterprise_legacy_oauth
+    end
+
+end
+
 module Travis
   module Github
     class << self