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# Copyright (C) 2008-2018 Jelmer Vernooij <jelmer@jelmer.uk>
# Copyright (C) 2008 John Carr
# Copyright (C) 2008-2011 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
from dulwich.server import TCPGitServer
import sys
from .. import (
errors,
trace,
)
from ..controldir import (
ControlDir,
)
from .mapping import (
default_mapping,
decode_git_path,
)
from .object_store import (
BazaarObjectStore,
get_object_store,
)
from .refs import (
get_refs_container,
)
from dulwich.protocol import Protocol
from dulwich.server import (
Backend,
BackendRepo,
ReceivePackHandler,
UploadPackHandler,
)
class BzrBackend(Backend):
"""A git serve backend that can use a Bazaar repository."""
def __init__(self, transport):
self.transport = transport
self.mapping = default_mapping
def open_repository(self, path):
# FIXME: More secure path sanitization
transport = self.transport.clone(decode_git_path(path).lstrip("/"))
trace.mutter('client opens %r: %r', path, transport)
return BzrBackendRepo(transport, self.mapping)
class BzrBackendRepo(BackendRepo):
def __init__(self, transport, mapping):
self.mapping = mapping
self.repo_dir = ControlDir.open_from_transport(transport)
self.repo = self.repo_dir.find_repository()
self.object_store = get_object_store(self.repo)
self.refs = get_refs_container(self.repo_dir, self.object_store)
def get_refs(self):
with self.object_store.lock_read():
return self.refs.as_dict()
def get_peeled(self, name):
cached = self.refs.get_peeled(name)
if cached is not None:
return cached
return self.object_store.peel_sha(self.refs[name]).id
def fetch_objects(self, determine_wants, graph_walker, progress,
get_tagged=None):
"""Yield git objects to send to client """
with self.object_store.lock_read():
wants = determine_wants(self.get_refs())
have = self.object_store.find_common_revisions(graph_walker)
if wants is None:
return
shallows = getattr(graph_walker, 'shallow', frozenset())
if isinstance(self.object_store, BazaarObjectStore):
return self.object_store.generate_pack_contents(
have, wants, shallow=shallows,
progress=progress, get_tagged=get_tagged, lossy=True)
else:
if shallows:
return self.object_store.generate_pack_contents(
have, wants, shallow=shallows, progress=progress)
else:
return self.object_store.generate_pack_contents(
have, wants, progress=progress)
class BzrTCPGitServer(TCPGitServer):
def handle_error(self, request, client_address):
trace.log_exception_quietly()
trace.warning('Exception happened during processing of request '
'from %s', client_address)
def serve_git(transport, host=None, port=None, inet=False, timeout=None):
backend = BzrBackend(transport)
if host is None:
host = 'localhost'
if port:
server = BzrTCPGitServer(backend, host, port)
else:
server = BzrTCPGitServer(backend, host)
server.serve_forever()
def git_http_hook(branch, method, path):
from dulwich.web import HTTPGitApplication, HTTPGitRequest, DEFAULT_HANDLERS
handler = None
for (smethod, spath) in HTTPGitApplication.services:
if smethod != method:
continue
mat = spath.search(path)
if mat:
handler = HTTPGitApplication.services[smethod, spath]
break
if handler is None:
return None
backend = BzrBackend(branch.user_transport)
def git_call(environ, start_response):
req = HTTPGitRequest(environ, start_response, dumb=False,
handlers=DEFAULT_HANDLERS)
return handler(req, backend, mat)
return git_call
def serve_command(handler_cls, backend, inf=sys.stdin, outf=sys.stdout):
"""Serve a single command.
This is mostly useful for the implementation of commands used by e.g. git+ssh.
:param handler_cls: `Handler` class to use for the request
:param argv: execv-style command-line arguments. Defaults to sys.argv.
:param backend: `Backend` to use
:param inf: File-like object to read from, defaults to standard input.
:param outf: File-like object to write to, defaults to standard output.
:return: Exit code for use with sys.exit. 0 on success, 1 on failure.
"""
def send_fn(data):
outf.write(data)
outf.flush()
proto = Protocol(inf.read, send_fn)
handler = handler_cls(backend, ["/"], proto)
# FIXME: Catch exceptions and write a single-line summary to outf.
handler.handle()
return 0
def serve_git_receive_pack(transport, host=None, port=None, inet=False):
if not inet:
raise errors.CommandError(
"git-receive-pack only works in inetd mode")
backend = BzrBackend(transport)
sys.exit(serve_command(ReceivePackHandler, backend=backend))
def serve_git_upload_pack(transport, host=None, port=None, inet=False):
if not inet:
raise errors.CommandError(
"git-receive-pack only works in inetd mode")
backend = BzrBackend(transport)
sys.exit(serve_command(UploadPackHandler, backend=backend))
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