Commit bcc01191 authored by Julien Muchembled's avatar Julien Muchembled

download: add netrc file support

Like for URL that contain credentials, we still skip auth challenge
because it's faster and:
- we only support one auth scheme (basic)
- netrc provides no way to specify realms, which seem anyway to be
  less and less used (https://stackoverflow.com/q/69303610 reports
  that recent browsers don't display them anymore)

See merge request !25
parent 171c2459
Pipeline #19205 passed with stage
in 0 seconds
......@@ -20,18 +20,20 @@ except ImportError:
try:
# Python 3
from urllib.request import Request, splituser, urlopen
from urllib.request import Request, splitport, splituser, urlopen
from urllib.parse import urlparse, urlunparse
except ImportError:
# Python 2
from urlparse import urlparse
from urlparse import urlunparse
from urllib2 import Request, splituser, urlopen
from urllib2 import Request, splitport, splituser, urlopen
from zc.buildout.easy_install import realpath
from base64 import b64encode
from contextlib import closing
import errno
import logging
import netrc
import os
import os.path
import re
......@@ -40,6 +42,23 @@ import tempfile
import zc.buildout
from . import bytes2str, str2bytes
class netrc(netrc.netrc):
def __init__(*args):
pass
def authenticators(self, host):
self.__class__, = self.__class__.__bases__
try:
self.__init__()
except IOError as e:
if e.errno != errno.ENOENT:
raise
self.__init__(os.devnull)
return self.authenticators(host)
netrc = netrc()
class ChecksumError(zc.buildout.UserError):
pass
......@@ -258,13 +277,19 @@ class Download(object):
def urlretrieve(self, url, tmp_path):
scheme, netloc, path, params, query, frag = urlparse(url)
req = url
if scheme in ('http', 'https'):
while scheme in ('http', 'https'): # not a loop
auth, host = splituser(netloc)
if auth:
url = urlunparse((scheme, host, path, params, query, frag))
req = Request(url)
req.add_header("Authorization",
"Basic " + bytes2str(b64encode(str2bytes(auth))))
else:
auth = netrc.authenticators(splitport(host)[0])
if not auth:
break
auth = '{0}:{2}'.format(*auth)
req = Request(url)
req.add_header("Authorization",
"Basic " + bytes2str(b64encode(str2bytes(auth))))
break
with closing(urlopen(req)) as src:
with open(tmp_path, 'wb') as dst:
shutil.copyfileobj(src, dst)
......
......@@ -166,6 +166,24 @@ True
Traceback (most recent call last):
UserError: Error downloading ...: HTTP Error 403: Forbidden
... with netrc:
>>> url = server_url + 'private/foo:bar'
>>> download(url)
Traceback (most recent call last):
UserError: Error downloading ...: HTTP Error 403: Forbidden
>>> import os, zc.buildout.download
>>> old_home = os.environ['HOME']
>>> home = os.environ['HOME'] = tmpdir('test-netrc')
>>> netrc = join(home, '.netrc')
>>> write(netrc, 'machine localhost login foo password bar')
>>> os.chmod(netrc, 0o600)
>>> zc.buildout.download.netrc.__init__()
>>> path, is_temp = download(url)
>>> is_temp; remove(path)
True
>>> os.environ['HOME'] = old_home
Downloading using the download cache
------------------------------------
......
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