Execute script with git permissions

github-fast-env/bin/github-fast-env

@@ -1,2 +1,2 @@
 #/usr/bin/env bash
-/usr/lib/github-fast-env/github-fast-env.rb "$@"
+sudo /usr/lib/github-fast-env/github-fast-env.rb "$@"

github-fast-env/bin/github-fast-envd

@@ -176,11 +176,11 @@ while true
 		mode = arguments[1]
 
 		if mode == "named-pipes"
-			if arguments.length < 3
+			if arguments.length < 4
 				raise ClientError.new "malformed command"
 			end
 		elsif mode == "pseudoterminal"
-			if arguments.length < 4
+			if arguments.length < 5
 				raise ClientError.new "malformed command"
 			end
 
@@ -189,71 +189,75 @@ while true
 			raise ClientError.new "unknown mode (#{mode})"
 		end
 
-		script_path = Base64.decode64(arguments.last)
+		working_directory = Base64.decode64(arguments[-2])
+		script_path = Base64.decode64(arguments[-1])
 
 		connection_id += 1
 
 		child_process = fork {
-			process_id = Process.pid
-			control_socket.puts "pid #{process_id}"
+			Dir.chdir(working_directory) do
+				process_id = Process.pid
+				control_socket.puts "pid #{process_id}"
 
-			exit_code = "unknown"
+				exit_code = "unknown"
 
-			if mode == "named-pipes"
-				set_up_named_pipes(control_socket, connection_id)
-			else
-				set_up_pseudoterminal(control_socket, pseudoterminal_path)
-			end
+				if mode == "named-pipes"
+					set_up_named_pipes(control_socket, connection_id)
+				else
+					set_up_pseudoterminal(control_socket, pseudoterminal_path)
+				end
 
-			$original_stderr.puts "  executing script #{script_path} (#{process_id})"
+				Process.gid = Process.egid = "git"
+				Process.uid = Process.euid = "git"
 
-			begin
-				begin
-					load script_path, true
-				rescue SystemExit => error
-					$original_stderr.puts "  exit code: #{error.status}"
-					exit_code = error.status
-				rescue StandardError => error
-					$stdin = $original_stdin
-					$stdout = $original_stdout
-					$stderr = $original_stderr
+				$original_stderr.puts "  executing script #{script_path} (#{process_id})"
 
-					raise ClientScriptError.new error
-				end
-			rescue ClientScriptError => error
-				encoded_error_output = Base64.encode64(error.source.full_message).delete("\n")
-				$original_stderr.puts "  error executing script, ignoring request"
-				begin
-					control_socket.puts "script_error #{encoded_error_output}"
-				rescue
-				end
-			rescue ClientError => error
-				$original_stderr.puts "  error communicating with client, ignoring request (#{error})"
 				begin
-					control_socket.puts "error #{error}"
-				rescue
+					begin
+						load script_path, true
+					rescue SystemExit => error
+						$original_stderr.puts "  exit code: #{error.status}"
+						exit_code = error.status
+					rescue StandardError => error
+						$stdin = $original_stdin
+						$stdout = $original_stdout
+						$stderr = $original_stderr
+
+						raise ClientScriptError.new error
+					end
+				rescue ClientScriptError => error
+					encoded_error_output = Base64.encode64(error.source.full_message).delete("\n")
+					$original_stderr.puts "  error executing script, ignoring request"
+					begin
+						control_socket.puts "script_error #{encoded_error_output}"
+					rescue
+					end
+				rescue ClientError => error
+					$original_stderr.puts "  error communicating with client, ignoring request (#{error})"
+					begin
+						control_socket.puts "error #{error}"
+					rescue
+					end
+				rescue StandardError => error
+					$original_stderr.puts "  error, ignoring request (#{error})"
+					begin
+						control_socket.puts "error internal server error"
+					rescue
+					end
 				end
-			rescue StandardError => error
-				$original_stderr.puts "  error, ignoring request (#{error})"
+
 				begin
-					control_socket.puts "error internal server error"
+					control_socket.puts "done #{exit_code}"
 				rescue
 				end
-			end
+				control_socket.close
 
-			begin
-				control_socket.puts "done #{exit_code}"
-			rescue
-			end
-			control_socket.close
+				if mode == "named-pipes"
+					clean_up_named_pipes(control_socket, connection_id)
+				end
 
-			if mode == "named-pipes"
-				clean_up_named_pipes(control_socket, connection_id)
+				$original_stderr.puts "  finished handling request (#{process_id})"
 			end
-
-			$original_stderr.puts "  finished handling request (#{process_id})"
-
-			Kernel.exit!
 		}
 
 		Process.detach(child_process)

github-fast-env/github-fast-env.rb

@@ -156,6 +156,7 @@ end
 
 log "info", "connected to control socket"
 
+working_directory = Base64.encode64(Dir.pwd).delete("\n")
 encoded_script_path = Base64.encode64(script_path).delete("\n")
 
 read_ios = [$control_socket]
@@ -164,9 +165,9 @@ if $options[:interactive]
 	pseudoterminal_path = File.readlink("/proc/self/fd/0")
 	encoded_pseudoterminal_path = Base64.encode64(pseudoterminal_path).delete("\n")
 
-	$control_socket.puts "new v1 pseudoterminal #{encoded_pseudoterminal_path} #{encoded_script_path}"
+	$control_socket.puts "new v1 pseudoterminal #{encoded_pseudoterminal_path} #{working_directory} #{encoded_script_path}"
 else
-	$control_socket.puts "new v1 named-pipes #{encoded_script_path}"
+	$control_socket.puts "new v1 named-pipes #{working_directory} #{encoded_script_path}"
 end
 
 pipes = {"stdin" => nil, "stdout" => nil, "stderr" => nil}