1
# Copyright (C) 2005, 2006, 2007 Canonical Ltd
3
# This program is free software; you can redistribute it and/or modify
4
# it under the terms of the GNU General Public License as published by
5
# the Free Software Foundation; either version 2 of the License, or
6
# (at your option) any later version.
8
# This program is distributed in the hope that it will be useful,
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11
# GNU General Public License for more details.
13
# You should have received a copy of the GNU General Public License
14
# along with this program; if not, write to the Free Software
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17
from cStringIO import StringIO
26
from bzrlib.transport import http
27
# TODO: handle_response should be integrated into the http/__init__.py
28
from bzrlib.transport.http.response import handle_response
29
from bzrlib.transport.http._urllib2_wrappers import (
35
class HttpTransport_urllib(http.HttpTransportBase):
36
"""Python urllib transport for http and https."""
38
# In order to debug we have to issue our traces in sync with
39
# httplib, which use print :(
42
_opener_class = Opener
44
def __init__(self, base, _from_transport=None):
45
super(HttpTransport_urllib, self).__init__(
46
base, _from_transport=_from_transport)
47
if _from_transport is not None:
48
self._opener = _from_transport._opener
50
self._opener = self._opener_class()
52
def _perform(self, request):
53
"""Send the request to the server and handles common errors.
55
:returns: urllib2 Response object
57
connection = self._get_connection()
58
if connection is not None:
59
# Give back shared info
60
request.connection = connection
61
(auth, proxy_auth) = self._get_credentials()
62
# Clean the httplib.HTTPConnection pipeline in case the previous
63
# request couldn't do it
64
connection.cleanup_pipe()
66
# First request, initialize credentials.
67
# scheme and realm will be set by the _urllib2_wrappers.AuthHandler
68
auth = self._create_auth()
69
# Proxy initialization will be done by the first proxied request
71
# Ensure authentication info is provided
73
request.proxy_auth = proxy_auth
75
if self._debuglevel > 0:
76
print 'perform: %s base: %s, url: %s' % (request.method, self.base,
77
request.get_full_url())
78
response = self._opener.open(request)
79
if self._get_connection() is not request.connection:
80
# First connection or reconnection
81
self._set_connection(request.connection,
82
(request.auth, request.proxy_auth))
84
# http may change the credentials while keeping the
86
self._update_credentials((request.auth, request.proxy_auth))
89
if request.follow_redirections is False \
90
and code in (301, 302, 303, 307):
91
raise errors.RedirectRequested(request.get_full_url(),
92
request.redirected_to,
93
is_permanent=(code == 301),
94
qual_proto=self._scheme)
96
if request.redirected_to is not None:
97
trace.mutter('redirected from: %s to: %s' % (request.get_full_url(),
98
request.redirected_to))
102
def _get(self, relpath, offsets, tail_amount=0):
103
"""See HttpTransport._get"""
105
abspath = self._remote_path(relpath)
107
accepted_errors = [200, 404]
108
if offsets or tail_amount:
109
range_header = self._attempted_range_header(offsets, tail_amount)
110
if range_header is not None:
111
accepted_errors.append(206)
112
accepted_errors.append(400)
113
accepted_errors.append(416)
114
bytes = 'bytes=' + range_header
115
headers = {'Range': bytes}
117
request = Request('GET', abspath, None, headers,
118
accepted_errors=accepted_errors)
119
response = self._perform(request)
122
if code == 404: # not found
123
raise errors.NoSuchFile(abspath)
124
elif code in (400, 416):
125
# We don't know which, but one of the ranges we specified was
127
raise errors.InvalidHttpRange(abspath, range_header,
128
'Server return code %d' % code)
130
data = handle_response(abspath, code, response.info(), response)
133
def _post(self, body_bytes):
134
abspath = self._remote_path('.bzr/smart')
135
# We include 403 in accepted_errors so that send_http_smart_request can
136
# handle a 403. Otherwise a 403 causes an unhandled TransportError.
137
response = self._perform(Request('POST', abspath, body_bytes,
138
accepted_errors=[200, 403]))
140
data = handle_response(abspath, code, response.info(), response)
143
def _head(self, relpath):
144
"""Request the HEAD of a file.
146
Performs the request and leaves callers handle the results.
148
abspath = self._remote_path(relpath)
149
request = Request('HEAD', abspath,
150
accepted_errors=[200, 404])
151
response = self._perform(request)
155
def has(self, relpath):
156
"""Does the target location exist?
158
response = self._head(relpath)
161
if code == 200: # "ok",
167
def get_test_permutations():
168
"""Return the permutations to be used in testing."""
169
from bzrlib.tests.http_server import HttpServer_urllib
170
return [(HttpTransport_urllib, HttpServer_urllib),
added
removed
bzrlib/transport/http/_urllib.py
