working git upload

bin/gitlab-shell

 #!/usr/bin/env ruby
 
+unless ENV['SSH_CONNECTION']
+  puts "Only ssh allowed"
+  exit
+end
 #
 # GitLab shell, invoked from ~/.ssh/authorized_keys
 #
-
-ROOT_PATH = File.expand_path('..',  __FILE__)
-
-puts ENV['SSH_CONNECTION'].inspect
+ROOT_PATH = File.join(File.expand_path(File.dirname(__FILE__)), "..")
+require File.join(ROOT_PATH, 'lib', 'gitlab_shell')
+GitlabShell.new.exec
 
 exit

lib/gitlab_shell.rb

+require 'open3'
+class GitlabShell
+  attr_accessor :username, :repo_name, :git_cmd
+
+  def initialize
+    @username = ARGV.shift
+    @origin_cmd = ENV['SSH_ORIGINAL_COMMAND']
+  end
+
+  def exec
+    if @origin_cmd
+      parse_cmd
+
+      return system("git-upload-pack /home/gip/repositories/#{@repo_name}")
+    else
+      puts "Welcome #{@username}!"
+    end
+  end
+
+  protected
+
+  def parse_cmd
+    args = @origin_cmd.split(' ')
+    @git_cmd = args.shift
+    @repo_name = args.shift
+  end
+
+  def git_cmds
+    %w(git-upload-pack git-receive-pack git-upload-archive)
+  end
+end