# Copyright (C) 2006 Canonical Ltd # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA """Tests of the bzr serve command.""" import os import signal import subprocess import threading from bzrlib import errors from bzrlib.branch import Branch from bzrlib.bzrdir import BzrDir from bzrlib.errors import ParamikoNotPresent from bzrlib.tests import TestCaseWithTransport, TestSkipped from bzrlib.transport import get_transport, smart class TestBzrServe(TestCaseWithTransport): def assertInetServerShutsdownCleanly(self, process): """Shutdown the server process looking for errors.""" # Shutdown the server: the server should shut down when it cannot read # from stdin anymore. process.stdin.close() # Hide stdin from the subprocess module, so it won't fail to close it. process.stdin = None result = self.finish_bzr_subprocess(process, retcode=0) self.assertEqual('', result[0]) self.assertEqual('', result[1]) def assertServerFinishesCleanly(self, process): """Shutdown the bzr serve instance process looking for errors.""" # Shutdown the server result = self.finish_bzr_subprocess(process, retcode=3, send_signal=signal.SIGINT) self.assertEqual('', result[0]) self.assertEqual('bzr: interrupted\n', result[1]) def start_server_inet(self, extra_options=()): """Start a bzr server subprocess using the --inet option. :param extra_options: extra options to give the server. :return: a tuple with the bzr process handle for passing to finish_bzr_subprocess, a client for the server, and a transport. """ # Serve from the current directory process = self.start_bzr_subprocess(['serve', '--inet']) # Connect to the server # We use this url because while this is no valid URL to connect to this # server instance, the transport needs a URL. medium = smart.SmartSimplePipesClientMedium( process.stdout, process.stdin) transport = smart.SmartTransport('bzr://localhost/', medium=medium) return process, transport def start_server_port(self, extra_options=()): """Start a bzr server subprocess. :param extra_options: extra options to give the server. :return: a tuple with the bzr process handle for passing to finish_bzr_subprocess, and the base url for the server. """ # Serve from the current directory args = ['serve', '--port', 'localhost:0'] args.extend(extra_options) process = self.start_bzr_subprocess(args, skip_if_plan_to_signal=True) port_line = process.stdout.readline() prefix = 'listening on port: ' self.assertStartsWith(port_line, prefix) port = int(port_line[len(prefix):]) return process,'bzr://localhost:%d/' % port def test_bzr_serve_inet_readonly(self): """bzr server should provide a read only filesystem by default.""" process, transport = self.start_server_inet() self.assertRaises(errors.TransportNotPossible, transport.mkdir, 'adir') self.assertInetServerShutsdownCleanly(process) def test_bzr_serve_inet_readwrite(self): # Make a branch self.make_branch('.') process, transport = self.start_server_inet(['--allow-writes']) # We get a working branch branch = BzrDir.open_from_transport(transport).open_branch() branch.repository.get_revision_graph() self.assertEqual(None, branch.last_revision()) self.assertInetServerShutsdownCleanly(process) def test_bzr_serve_port_readonly(self): """bzr server should provide a read only filesystem by default.""" process, url = self.start_server_port() transport = get_transport(url) self.assertRaises(errors.TransportNotPossible, transport.mkdir, 'adir') self.assertServerFinishesCleanly(process) def test_bzr_serve_port_readwrite(self): # Make a branch self.make_branch('.') process, url = self.start_server_port(['--allow-writes']) # Connect to the server branch = Branch.open(url) # We get a working branch branch.repository.get_revision_graph() self.assertEqual(None, branch.last_revision()) self.assertServerFinishesCleanly(process) def test_bzr_serve_no_args(self): """'bzr serve' with no arguments or options should not traceback.""" out, err = self.run_bzr_error( ['bzr serve requires one of --inet or --port'], 'serve') def test_bzr_connect_to_bzr_ssh(self): """User acceptance that get_transport of a bzr+ssh:// behaves correctly. bzr+ssh:// should cause bzr to run a remote bzr smart server over SSH. """ try: from bzrlib.transport.sftp import SFTPServer except ParamikoNotPresent: raise TestSkipped('Paramiko not installed') from bzrlib.tests.stub_sftp import StubServer # Make a branch self.make_branch('a_branch') # Start an SSH server self.command_executed = [] # XXX: This is horrible -- we define a really dumb SSH server that # executes commands, and manage the hooking up of stdin/out/err to the # SSH channel ourselves. Surely this has already been implemented # elsewhere? class StubSSHServer(StubServer): test = self def check_channel_exec_request(self, channel, command): self.test.command_executed.append(command) proc = subprocess.Popen( command, shell=True, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE) # XXX: horribly inefficient, not to mention ugly. # Start a thread for each of stdin/out/err, and relay bytes from # the subprocess to channel and vice versa. def ferry_bytes(read, write, close): while True: bytes = read(1) if bytes == '': close() break write(bytes) file_functions = [ (channel.recv, proc.stdin.write, proc.stdin.close), (proc.stdout.read, channel.sendall, channel.close), (proc.stderr.read, channel.sendall_stderr, channel.close)] for read, write, close in file_functions: t = threading.Thread( target=ferry_bytes, args=(read, write, close)) t.start() return True ssh_server = SFTPServer(StubSSHServer) # XXX: We *don't* want to override the default SSH vendor, so we set # _vendor to what _get_ssh_vendor returns. ssh_server.setUp() self.addCleanup(ssh_server.tearDown) port = ssh_server._listener.port # Access the branch via a bzr+ssh URL. The BZR_REMOTE_PATH environment # variable is used to tell bzr what command to run on the remote end. path_to_branch = os.path.abspath('a_branch') orig_bzr_remote_path = os.environ.get('BZR_REMOTE_PATH') os.environ['BZR_REMOTE_PATH'] = self.get_bzr_path() try: branch = Branch.open( 'bzr+ssh://fred:secret@localhost:%d%s' % (port, path_to_branch)) branch.repository.get_revision_graph() self.assertEqual(None, branch.last_revision()) # Check we can perform write operations branch.bzrdir.root_transport.mkdir('foo') finally: # Restore the BZR_REMOTE_PATH environment variable back to its # original state. if orig_bzr_remote_path is None: del os.environ['BZR_REMOTE_PATH'] else: os.environ['BZR_REMOTE_PATH'] = orig_bzr_remote_path self.assertEqual( ['%s serve --inet --directory=/ --allow-writes' % self.get_bzr_path()], self.command_executed)