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require 'open3'
require_relative 'gitlab_net'
class GitlabShell
attr_accessor :key_id, :repo_name, :git_cmd, :repos_path, :repo_name
def initialize
@key_id = ARGV.shift
@origin_cmd = ENV['SSH_ORIGINAL_COMMAND']
@repos_path = GitlabConfig.new.repos_path
end
def exec
if @origin_cmd
parse_cmd
if git_cmds.include?(@git_cmd)
ENV['GL_ID'] = @key_id
if validate_access
process_cmd
else
message = "gitlab-shell: Access denied for git command <#{@origin_cmd}>"
message << " by user with key #{@key_id}."
$logger.warn message
end
else
message = "gitlab-shell: Attempt to execute disallowed command "
message << "<#{@origin_cmd}> by user with key #{@key_id}."
$logger.warn message
puts 'Not allowed command'
end
else
user = api.discover(@key_id)
puts "Welcome to GitLab, #{user && user['name'] || 'Anonymous'}!"
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
def process_cmd
repo_full_path = File.join(repos_path, repo_name)
cmd = "#{@git_cmd} #{repo_full_path}"
$logger.info "gitlab-shell: executing git command <#{cmd}> for user with key #{@key_id}."
exec_cmd(cmd)
end
def validate_access
api.allowed?(@git_cmd, @repo_name, @key_id, '_any')
end
def exec_cmd args
Kernel::exec args
end
def api
GitlabNet.new
end
end
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