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import os
import socket
import logging
import subprocess
import traceback
import mimetypes
from webob import Request, Response, exc
from rhodecode.lib import subprocessio
from rhodecode.model.db import RhodeCodeUi
from rhodecode.lib.utils2 import str2bool
log = logging.getLogger(__name__)
class FileWrapper(object):
def __init__(self, fd, content_length):
self.fd = fd
self.content_length = content_length
self.remain = content_length
def read(self, size):
if size <= self.remain:
try:
data = self.fd.read(size)
except socket.error:
raise IOError(self)
self.remain -= size
elif self.remain:
data = self.fd.read(self.remain)
self.remain = 0
else:
data = None
return data
def __repr__(self):
return '<FileWrapper %s len: %s, read: %s>' % (
self.fd, self.content_length, self.content_length - self.remain
)
class GitRepository(object):
git_folder_signature = set(['config', 'head', 'info', 'objects', 'refs'])
commands = ['git-upload-pack', 'git-receive-pack']
def __init__(self, repo_name, content_path, extras):
files = set([f.lower() for f in os.listdir(content_path)])
if not (self.git_folder_signature.intersection(files)
== self.git_folder_signature):
raise OSError('%s missing git signature' % content_path)
self.content_path = content_path
self.accepts = ['text/plain']
self.valid_accepts = self.accepts + ['application/x-%s-result' %
c for c in self.commands]
self.repo_name = repo_name
self.extras = extras
self.dumb = str2bool(RhodeCodeUi.get_by_key('dumbgit').ui_value)
def _get_fixedpath(self, path):
"""
Small fix for repo_path
:param path:
:type path:
"""
return path.split(self.repo_name, 1)[-1].strip('/')
def inforefs(self, request, environ):
"""
WSGI Response producer for HTTP GET Git Smart
HTTP /info/refs request.
"""
resp = Response()
if self.dumb:
log.debug('Using dumb HTTP git protocol')
git_path = self._get_fixedpath(request.path_info)
filename = os.path.join(self.content_path, git_path)
if os.path.isfile(filename):
mime_type, encoding = mimetypes.guess_type(filename)
resp.content_disposition = ('attachment; filename="%s"' %
os.path.basename(filename))
resp.content_type = mime_type or 'application/octet-stream'
resp.charset = encoding or 'binary'
resp.headers = {'X-Sendfile':
(os.path.abspath(filename)).encode('utf8')}
resp.status = 200
else:
log.info("File not found: %s" % git_path)
resp.status = 404
else:
log.debug('Using smart HTTP git protocol')
git_command = request.GET.get('service')
if git_command not in self.commands:
log.debug('command %s not allowed' % git_command)
return exc.HTTPMethodNotAllowed()
# note to self:
# please, resist the urge to add '\n' to git capture and increment
# line count by 1.
# The code in Git client not only does NOT need '\n', but actually
# blows up if you sprinkle "flush" (0000) as "0001\n".
# It reads binary, per number of bytes specified.
# if you do add '\n' as part of data, count it.
server_advert = '# service=%s' % git_command
packet_len = str(hex(len(server_advert) + 4)[2:].rjust(4, '0')).lower()
try:
out = subprocessio.SubprocessIOChunker(
r'git %s --stateless-rpc --advertise-refs "%s"' % (
git_command[4:], self.content_path),
starting_values=[
packet_len + server_advert + '0000'
]
)
except EnvironmentError, e:
log.error(traceback.format_exc())
raise exc.HTTPExpectationFailed()
resp.charset = None
resp.content_type = ('application/x-%s-advertisement' %
str(git_command))
resp.status = 200
resp.app_iter = out
return resp
def backend(self, request, environ):
"""
WSGI Response producer for HTTP POST Git Smart HTTP requests.
Reads commands and data from HTTP POST's body.
returns an iterator obj with contents of git command's
response to stdout
"""
git_command = self._get_fixedpath(request.path_info)
resp = Response()
if self.dumb:
log.debug('Using dumb HTTP git protocol')
filename = os.path.join(self.content_path, git_command)
git_path = self._get_fixedpath(request.path_info)
if os.path.isfile(filename):
mime_type, encoding = mimetypes.guess_type(filename)
resp.content_disposition = ('attachment; filename="%s"' %
os.path.basename(filename))
resp.content_type = mime_type or 'application/octet-stream'
resp.charset = encoding or 'binary'
resp.headers = {'X-Sendfile':
(os.path.abspath(filename)).encode('utf8')}
resp.status = 200
else:
log.info("File not found: %s" % git_path)
resp.status = 404
else:
if git_command not in self.commands:
log.debug('command %s not allowed' % git_command)
return exc.HTTPMethodNotAllowed()
if 'CONTENT_LENGTH' in environ:
inputstream = FileWrapper(environ['wsgi.input'],
request.content_length)
else:
inputstream = environ['wsgi.input']
try:
gitenv = os.environ
from rhodecode.lib.compat import json
gitenv['RHODECODE_EXTRAS'] = json.dumps(self.extras)
# forget all configs
gitenv['GIT_CONFIG_NOGLOBAL'] = '1'
opts = dict(
env=gitenv,
cwd=os.getcwd()
)
cmd = r'git %s --stateless-rpc "%s"' % (git_command[4:],
self.content_path),
log.debug('handling cmd %s' % cmd)
out = subprocessio.SubprocessIOChunker(
cmd,
inputstream=inputstream,
**opts
)
except EnvironmentError, e:
log.error(traceback.format_exc())
raise exc.HTTPExpectationFailed()
resp.content_type = 'application/x-%s-result' % git_command.encode('utf8')
resp.status = 200
resp.charset = None
resp.app_iter = out
if git_command in [u'git-receive-pack']:
# updating refs manually after each push.
# Needed for pre-1.7.0.4 git clients using regular HTTP mode.
cmd = (u'git --git-dir "%s" '
'update-server-info' % self.content_path)
log.debug('handling cmd %s' % cmd)
subprocess.call(cmd, shell=True)
return resp
def __call__(self, environ, start_response):
request = Request(environ)
_path = self._get_fixedpath(request.path_info)
if _path.startswith('info/refs'):
app = self.inforefs
elif [a for a in self.valid_accepts if a in request.accept]:
app = self.backend
try:
resp = app(request, environ)
except exc.HTTPException, e:
resp = e
log.error(traceback.format_exc())
except Exception, e:
log.error(traceback.format_exc())
resp = exc.HTTPInternalServerError()
return resp(environ, start_response)
class GitDirectory(object):
def __init__(self, repo_root, repo_name, extras):
repo_location = os.path.join(repo_root, repo_name)
if not os.path.isdir(repo_location):
raise OSError(repo_location)
self.content_path = repo_location
self.repo_name = repo_name
self.repo_location = repo_location
self.extras = extras
def __call__(self, environ, start_response):
content_path = self.content_path
try:
app = GitRepository(self.repo_name, content_path, self.extras)
except (AssertionError, OSError):
content_path = os.path.join(content_path, '.git')
if os.path.isdir(content_path):
app = GitRepository(self.repo_name, content_path, self.extras)
else:
return exc.HTTPNotFound()(environ, start_response)
return app(environ, start_response)
def make_wsgi_app(repo_name, repo_root, extras):
return GitDirectory(repo_root, repo_name, extras)
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