"""PyPI and direct package downloading"""
import sys
import os
import re
import shutil
import socket
import base64
import hashlib
import itertools
from functools import wraps
try:
from urllib.parse import splituser
except ImportError:
from urllib2 import splituser
from setuptools.extern import six
from setuptools.extern.six.moves import urllib, http_client, configparser, map
import setuptools
from pkg_resources import (
CHECKOUT_DIST, Distribution, BINARY_DIST, normalize_path, SOURCE_DIST,
require, Environment, find_distributions, safe_name, safe_version,
to_filename, Requirement, DEVELOP_DIST,
)
from setuptools import ssl_support
from distutils import log
from distutils.errors import DistutilsError
from fnmatch import translate
from setuptools.py26compat import strip_fragment
from setuptools.py27compat import get_all_headers
EGG_FRAGMENT = re.compile(r'^egg=([-A-Za-z0-9_.]+)$')
HREF = re.compile("""href\\s*=\\s*['"]?([^'"> ]+)""", re.I)
# this is here to fix emacs' cruddy broken syntax highlighting
PYPI_MD5 = re.compile(
'([^<]+)\n\s+\\(md5\\)'
)
URL_SCHEME = re.compile('([-+.a-z0-9]{2,}):', re.I).match
EXTENSIONS = ".tar.gz .tar.bz2 .tar .zip .tgz".split()
__all__ = [
'PackageIndex', 'distros_for_url', 'parse_bdist_wininst',
'interpret_distro_name',
]
_SOCKET_TIMEOUT = 15
_tmpl = "setuptools/{setuptools.__version__} Python-urllib/{py_major}"
user_agent = _tmpl.format(py_major=sys.version[:3], **globals())
def parse_requirement_arg(spec):
try:
return Requirement.parse(spec)
except ValueError:
raise DistutilsError(
"Not a URL, existing file, or requirement spec: %r" % (spec,)
)
def parse_bdist_wininst(name):
"""Return (base,pyversion) or (None,None) for possible .exe name"""
lower = name.lower()
base, py_ver, plat = None, None, None
if lower.endswith('.exe'):
if lower.endswith('.win32.exe'):
base = name[:-10]
plat = 'win32'
elif lower.startswith('.win32-py', -16):
py_ver = name[-7:-4]
base = name[:-16]
plat = 'win32'
elif lower.endswith('.win-amd64.exe'):
base = name[:-14]
plat = 'win-amd64'
elif lower.startswith('.win-amd64-py', -20):
py_ver = name[-7:-4]
base = name[:-20]
plat = 'win-amd64'
return base, py_ver, plat
def egg_info_for_url(url):
parts = urllib.parse.urlparse(url)
scheme, server, path, parameters, query, fragment = parts
base = urllib.parse.unquote(path.split('/')[-1])
if server == 'sourceforge.net' and base == 'download': # XXX Yuck
base = urllib.parse.unquote(path.split('/')[-2])
if '#' in base:
base, fragment = base.split('#', 1)
return base, fragment
def distros_for_url(url, metadata=None):
"""Yield egg or source distribution objects that might be found at a URL"""
base, fragment = egg_info_for_url(url)
for dist in distros_for_location(url, base, metadata):
yield dist
if fragment:
match = EGG_FRAGMENT.match(fragment)
if match:
for dist in interpret_distro_name(
url, match.group(1), metadata, precedence=CHECKOUT_DIST
):
yield dist
def distros_for_location(location, basename, metadata=None):
"""Yield egg or source distribution objects based on basename"""
if basename.endswith('.egg.zip'):
basename = basename[:-4] # strip the .zip
if basename.endswith('.egg') and '-' in basename:
# only one, unambiguous interpretation
return [Distribution.from_location(location, basename, metadata)]
if basename.endswith('.exe'):
win_base, py_ver, platform = parse_bdist_wininst(basename)
if win_base is not None:
return interpret_distro_name(
location, win_base, metadata, py_ver, BINARY_DIST, platform
)
# Try source distro extensions (.zip, .tgz, etc.)
#
for ext in EXTENSIONS:
if basename.endswith(ext):
basename = basename[:-len(ext)]
return interpret_distro_name(location, basename, metadata)
return [] # no extension matched
def distros_for_filename(filename, metadata=None):
"""Yield possible egg or source distribution objects based on a filename"""
return distros_for_location(
normalize_path(filename), os.path.basename(filename), metadata
)
def interpret_distro_name(
location, basename, metadata, py_version=None, precedence=SOURCE_DIST,
platform=None
):
"""Generate alternative interpretations of a source distro name
Note: if `location` is a filesystem filename, you should call
``pkg_resources.normalize_path()`` on it before passing it to this
routine!
"""
# Generate alternative interpretations of a source distro name
# Because some packages are ambiguous as to name/versions split
# e.g. "adns-python-1.1.0", "egenix-mx-commercial", etc.
# So, we generate each possible interepretation (e.g. "adns, python-1.1.0"
# "adns-python, 1.1.0", and "adns-python-1.1.0, no version"). In practice,
# the spurious interpretations should be ignored, because in the event
# there's also an "adns" package, the spurious "python-1.1.0" version will
# compare lower than any numeric version number, and is therefore unlikely
# to match a request for it. It's still a potential problem, though, and
# in the long run PyPI and the distutils should go for "safe" names and
# versions in distribution archive names (sdist and bdist).
parts = basename.split('-')
if not py_version and any(re.match('py\d\.\d$', p) for p in parts[2:]):
# it is a bdist_dumb, not an sdist -- bail out
return
for p in range(1, len(parts) + 1):
yield Distribution(
location, metadata, '-'.join(parts[:p]), '-'.join(parts[p:]),
py_version=py_version, precedence=precedence,
platform=platform
)
# From Python 2.7 docs
def unique_everseen(iterable, key=None):
"List unique elements, preserving order. Remember all elements ever seen."
# unique_everseen('AAAABBBCCDAABBB') --> A B C D
# unique_everseen('ABBCcAD', str.lower) --> A B C D
seen = set()
seen_add = seen.add
if key is None:
for element in six.moves.filterfalse(seen.__contains__, iterable):
seen_add(element)
yield element
else:
for element in iterable:
k = key(element)
if k not in seen:
seen_add(k)
yield element
def unique_values(func):
"""
Wrap a function returning an iterable such that the resulting iterable
only ever yields unique items.
"""
@wraps(func)
def wrapper(*args, **kwargs):
return unique_everseen(func(*args, **kwargs))
return wrapper
REL = re.compile("""<([^>]*\srel\s*=\s*['"]?([^'">]+)[^>]*)>""", re.I)
# this line is here to fix emacs' cruddy broken syntax highlighting
@unique_values
def find_external_links(url, page):
"""Find rel="homepage" and rel="download" links in `page`, yielding URLs"""
for match in REL.finditer(page):
tag, rel = match.groups()
rels = set(map(str.strip, rel.lower().split(',')))
if 'homepage' in rels or 'download' in rels:
for match in HREF.finditer(tag):
yield urllib.parse.urljoin(url, htmldecode(match.group(1)))
for tag in ("| Home Page", " | Download URL"):
pos = page.find(tag)
if pos != -1:
match = HREF.search(page, pos)
if match:
yield urllib.parse.urljoin(url, htmldecode(match.group(1)))
class ContentChecker(object):
"""
A null content checker that defines the interface for checking content
"""
def feed(self, block):
"""
Feed a block of data to the hash.
"""
return
def is_valid(self):
"""
Check the hash. Return False if validation fails.
"""
return True
def report(self, reporter, template):
"""
Call reporter with information about the checker (hash name)
substituted into the template.
"""
return
class HashChecker(ContentChecker):
pattern = re.compile(
r'(?Psha1|sha224|sha384|sha256|sha512|md5)='
r'(?P[a-f0-9]+)'
)
def __init__(self, hash_name, expected):
self.hash_name = hash_name
self.hash = hashlib.new(hash_name)
self.expected = expected
@classmethod
def from_url(cls, url):
"Construct a (possibly null) ContentChecker from a URL"
fragment = urllib.parse.urlparse(url)[-1]
if not fragment:
return ContentChecker()
match = cls.pattern.search(fragment)
if not match:
return ContentChecker()
return cls(**match.groupdict())
def feed(self, block):
self.hash.update(block)
def is_valid(self):
return self.hash.hexdigest() == self.expected
def report(self, reporter, template):
msg = template % self.hash_name
return reporter(msg)
class PackageIndex(Environment):
"""A distribution index that scans web pages for download URLs"""
def __init__(
self, index_url="https://pypi.python.org/simple", hosts=('*',),
ca_bundle=None, verify_ssl=True, *args, **kw
):
Environment.__init__(self, *args, **kw)
self.index_url = index_url + "/" [:not index_url.endswith('/')]
self.scanned_urls = {}
self.fetched_urls = {}
self.package_pages = {}
self.allows = re.compile('|'.join(map(translate, hosts))).match
self.to_scan = []
use_ssl = (
verify_ssl
and ssl_support.is_available
and (ca_bundle or ssl_support.find_ca_bundle())
)
if use_ssl:
self.opener = ssl_support.opener_for(ca_bundle)
else:
self.opener = urllib.request.urlopen
def process_url(self, url, retrieve=False):
"""Evaluate a URL as a possible download, and maybe retrieve it"""
if url in self.scanned_urls and not retrieve:
return
self.scanned_urls[url] = True
if not URL_SCHEME(url):
self.process_filename(url)
return
else:
dists = list(distros_for_url(url))
if dists:
if not self.url_ok(url):
return
self.debug("Found link: %s", url)
if dists or not retrieve or url in self.fetched_urls:
list(map(self.add, dists))
return # don't need the actual page
if not self.url_ok(url):
self.fetched_urls[url] = True
return
self.info("Reading %s", url)
self.fetched_urls[url] = True # prevent multiple fetch attempts
tmpl = "Download error on %s: %%s -- Some packages may not be found!"
f = self.open_url(url, tmpl % url)
if f is None:
return
self.fetched_urls[f.url] = True
if 'html' not in f.headers.get('content-type', '').lower():
f.close() # not html, we can't process it
return
base = f.url # handle redirects
page = f.read()
if not isinstance(page, str): # We are in Python 3 and got bytes. We want str.
if isinstance(f, urllib.error.HTTPError):
# Errors have no charset, assume latin1:
charset = 'latin-1'
else:
charset = f.headers.get_param('charset') or 'latin-1'
page = page.decode(charset, "ignore")
f.close()
for match in HREF.finditer(page):
link = urllib.parse.urljoin(base, htmldecode(match.group(1)))
self.process_url(link)
if url.startswith(self.index_url) and getattr(f, 'code', None) != 404:
page = self.process_index(url, page)
def process_filename(self, fn, nested=False):
# process filenames or directories
if not os.path.exists(fn):
self.warn("Not found: %s", fn)
return
if os.path.isdir(fn) and not nested:
path = os.path.realpath(fn)
for item in os.listdir(path):
self.process_filename(os.path.join(path, item), True)
dists = distros_for_filename(fn)
if dists:
self.debug("Found: %s", fn)
list(map(self.add, dists))
def url_ok(self, url, fatal=False):
s = URL_SCHEME(url)
is_file = s and s.group(1).lower() == 'file'
if is_file or self.allows(urllib.parse.urlparse(url)[1]):
return True
msg = ("\nNote: Bypassing %s (disallowed host; see "
"http://bit.ly/1dg9ijs for details).\n")
if fatal:
raise DistutilsError(msg % url)
else:
self.warn(msg, url)
def scan_egg_links(self, search_path):
dirs = filter(os.path.isdir, search_path)
egg_links = (
(path, entry)
for path in dirs
for entry in os.listdir(path)
if entry.endswith('.egg-link')
)
list(itertools.starmap(self.scan_egg_link, egg_links))
def scan_egg_link(self, path, entry):
with open(os.path.join(path, entry)) as raw_lines:
# filter non-empty lines
lines = list(filter(None, map(str.strip, raw_lines)))
if len(lines) != 2:
# format is not recognized; punt
return
egg_path, setup_path = lines
for dist in find_distributions(os.path.join(path, egg_path)):
dist.location = os.path.join(path, *lines)
dist.precedence = SOURCE_DIST
self.add(dist)
def process_index(self, url, page):
"""Process the contents of a PyPI page"""
def scan(link):
# Process a URL to see if it's for a package page
if link.startswith(self.index_url):
parts = list(map(
urllib.parse.unquote, link[len(self.index_url):].split('/')
))
if len(parts) == 2 and '#' not in parts[1]:
# it's a package page, sanitize and index it
pkg = safe_name(parts[0])
ver = safe_version(parts[1])
self.package_pages.setdefault(pkg.lower(), {})[link] = True
return to_filename(pkg), to_filename(ver)
return None, None
# process an index page into the package-page index
for match in HREF.finditer(page):
try:
scan(urllib.parse.urljoin(url, htmldecode(match.group(1))))
except ValueError:
pass
pkg, ver = scan(url) # ensure this page is in the page index
if pkg:
# process individual package page
for new_url in find_external_links(url, page):
# Process the found URL
base, frag = egg_info_for_url(new_url)
if base.endswith('.py') and not frag:
if ver:
new_url += '#egg=%s-%s' % (pkg, ver)
else:
self.need_version_info(url)
self.scan_url(new_url)
return PYPI_MD5.sub(
lambda m: '%s' % m.group(1, 3, 2), page
)
else:
return "" # no sense double-scanning non-package pages
def need_version_info(self, url):
self.scan_all(
"Page at %s links to .py file(s) without version info; an index "
"scan is required.", url
)
def scan_all(self, msg=None, *args):
if self.index_url not in self.fetched_urls:
if msg:
self.warn(msg, *args)
self.info(
"Scanning index of all packages (this may take a while)"
)
self.scan_url(self.index_url)
def find_packages(self, requirement):
self.scan_url(self.index_url + requirement.unsafe_name + '/')
if not self.package_pages.get(requirement.key):
# Fall back to safe version of the name
self.scan_url(self.index_url + requirement.project_name + '/')
if not self.package_pages.get(requirement.key):
# We couldn't find the target package, so search the index page too
self.not_found_in_index(requirement)
for url in list(self.package_pages.get(requirement.key, ())):
# scan each page that might be related to the desired package
self.scan_url(url)
def obtain(self, requirement, installer=None):
self.prescan()
self.find_packages(requirement)
for dist in self[requirement.key]:
if dist in requirement:
return dist
self.debug("%s does not match %s", requirement, dist)
return super(PackageIndex, self).obtain(requirement, installer)
def check_hash(self, checker, filename, tfp):
"""
checker is a ContentChecker
"""
checker.report(self.debug,
"Validating %%s checksum for %s" % filename)
if not checker.is_valid():
tfp.close()
os.unlink(filename)
raise DistutilsError(
"%s validation failed for %s; "
"possible download problem?" % (
checker.hash.name, os.path.basename(filename))
)
def add_find_links(self, urls):
"""Add `urls` to the list that will be prescanned for searches"""
for url in urls:
if (
self.to_scan is None # if we have already "gone online"
or not URL_SCHEME(url) # or it's a local file/directory
or url.startswith('file:')
or list(distros_for_url(url)) # or a direct package link
):
# then go ahead and process it now
self.scan_url(url)
else:
# otherwise, defer retrieval till later
self.to_scan.append(url)
def prescan(self):
"""Scan urls scheduled for prescanning (e.g. --find-links)"""
if self.to_scan:
list(map(self.scan_url, self.to_scan))
self.to_scan = None # from now on, go ahead and process immediately
def not_found_in_index(self, requirement):
if self[requirement.key]: # we've seen at least one distro
meth, msg = self.info, "Couldn't retrieve index page for %r"
else: # no distros seen for this name, might be misspelled
meth, msg = (self.warn,
"Couldn't find index page for %r (maybe misspelled?)")
meth(msg, requirement.unsafe_name)
self.scan_all()
def download(self, spec, tmpdir):
"""Locate and/or download `spec` to `tmpdir`, returning a local path
`spec` may be a ``Requirement`` object, or a string containing a URL,
an existing local filename, or a project/version requirement spec
(i.e. the string form of a ``Requirement`` object). If it is the URL
of a .py file with an unambiguous ``#egg=name-version`` tag (i.e., one
that escapes ``-`` as ``_`` throughout), a trivial ``setup.py`` is
automatically created alongside the downloaded file.
If `spec` is a ``Requirement`` object or a string containing a
project/version requirement spec, this method returns the location of
a matching distribution (possibly after downloading it to `tmpdir`).
If `spec` is a locally existing file or directory name, it is simply
returned unchanged. If `spec` is a URL, it is downloaded to a subpath
of `tmpdir`, and the local filename is returned. Various errors may be
raised if a problem occurs during downloading.
"""
if not isinstance(spec, Requirement):
scheme = URL_SCHEME(spec)
if scheme:
# It's a url, download it to tmpdir
found = self._download_url(scheme.group(1), spec, tmpdir)
base, fragment = egg_info_for_url(spec)
if base.endswith('.py'):
found = self.gen_setup(found, fragment, tmpdir)
return found
elif os.path.exists(spec):
# Existing file or directory, just return it
return spec
else:
spec = parse_requirement_arg(spec)
return getattr(self.fetch_distribution(spec, tmpdir), 'location', None)
def fetch_distribution(
self, requirement, tmpdir, force_scan=False, source=False,
develop_ok=False, local_index=None
):
"""Obtain a distribution suitable for fulfilling `requirement`
`requirement` must be a ``pkg_resources.Requirement`` instance.
If necessary, or if the `force_scan` flag is set, the requirement is
searched for in the (online) package index as well as the locally
installed packages. If a distribution matching `requirement` is found,
the returned distribution's ``location`` is the value you would have
gotten from calling the ``download()`` method with the matching
distribution's URL or filename. If no matching distribution is found,
``None`` is returned.
If the `source` flag is set, only source distributions and source
checkout links will be considered. Unless the `develop_ok` flag is
set, development and system eggs (i.e., those using the ``.egg-info``
format) will be ignored.
"""
# process a Requirement
self.info("Searching for %s", requirement)
skipped = {}
dist = None
def find(req, env=None):
if env is None:
env = self
# Find a matching distribution; may be called more than once
for dist in env[req.key]:
if dist.precedence == DEVELOP_DIST and not develop_ok:
if dist not in skipped:
self.warn("Skipping development or system egg: %s", dist)
skipped[dist] = 1
continue
if dist in req and (dist.precedence <= SOURCE_DIST or not source):
dist.download_location = self.download(dist.location, tmpdir)
if os.path.exists(dist.download_location):
return dist
if force_scan:
self.prescan()
self.find_packages(requirement)
dist = find(requirement)
if not dist and local_index is not None:
dist = find(requirement, local_index)
if dist is None:
if self.to_scan is not None:
self.prescan()
dist = find(requirement)
if dist is None and not force_scan:
self.find_packages(requirement)
dist = find(requirement)
if dist is None:
self.warn(
"No local packages or working download links found for %s%s",
(source and "a source distribution of " or ""),
requirement,
)
else:
self.info("Best match: %s", dist)
return dist.clone(location=dist.download_location)
def fetch(self, requirement, tmpdir, force_scan=False, source=False):
"""Obtain a file suitable for fulfilling `requirement`
DEPRECATED; use the ``fetch_distribution()`` method now instead. For
backward compatibility, this routine is identical but returns the
``location`` of the downloaded distribution instead of a distribution
object.
"""
dist = self.fetch_distribution(requirement, tmpdir, force_scan, source)
if dist is not None:
return dist.location
return None
def gen_setup(self, filename, fragment, tmpdir):
match = EGG_FRAGMENT.match(fragment)
dists = match and [
d for d in
interpret_distro_name(filename, match.group(1), None) if d.version
] or []
if len(dists) == 1: # unambiguous ``#egg`` fragment
basename = os.path.basename(filename)
# Make sure the file has been downloaded to the temp dir.
if os.path.dirname(filename) != tmpdir:
dst = os.path.join(tmpdir, basename)
from setuptools.command.easy_install import samefile
if not samefile(filename, dst):
shutil.copy2(filename, dst)
filename = dst
with open(os.path.join(tmpdir, 'setup.py'), 'w') as file:
file.write(
"from setuptools import setup\n"
"setup(name=%r, version=%r, py_modules=[%r])\n"
% (
dists[0].project_name, dists[0].version,
os.path.splitext(basename)[0]
)
)
return filename
elif match:
raise DistutilsError(
"Can't unambiguously interpret project/version identifier %r; "
"any dashes in the name or version should be escaped using "
"underscores. %r" % (fragment, dists)
)
else:
raise DistutilsError(
"Can't process plain .py files without an '#egg=name-version'"
" suffix to enable automatic setup script generation."
)
dl_blocksize = 8192
def _download_to(self, url, filename):
self.info("Downloading %s", url)
# Download the file
fp, info = None, None
try:
checker = HashChecker.from_url(url)
fp = self.open_url(strip_fragment(url))
if isinstance(fp, urllib.error.HTTPError):
raise DistutilsError(
"Can't download %s: %s %s" % (url, fp.code, fp.msg)
)
headers = fp.info()
blocknum = 0
bs = self.dl_blocksize
size = -1
if "content-length" in headers:
# Some servers return multiple Content-Length headers :(
sizes = get_all_headers(headers, 'Content-Length')
size = max(map(int, sizes))
self.reporthook(url, filename, blocknum, bs, size)
with open(filename, 'wb') as tfp:
while True:
block = fp.read(bs)
if block:
checker.feed(block)
tfp.write(block)
blocknum += 1
self.reporthook(url, filename, blocknum, bs, size)
else:
break
self.check_hash(checker, filename, tfp)
return headers
finally:
if fp:
fp.close()
def reporthook(self, url, filename, blocknum, blksize, size):
pass # no-op
def open_url(self, url, warning=None):
if url.startswith('file:'):
return local_open(url)
try:
return open_with_auth(url, self.opener)
except (ValueError, http_client.InvalidURL) as v:
msg = ' '.join([str(arg) for arg in v.args])
if warning:
self.warn(warning, msg)
else:
raise DistutilsError('%s %s' % (url, msg))
except urllib.error.HTTPError as v:
return v
except urllib.error.URLError as v:
if warning:
self.warn(warning, v.reason)
else:
raise DistutilsError("Download error for %s: %s"
% (url, v.reason))
except http_client.BadStatusLine as v:
if warning:
self.warn(warning, v.line)
else:
raise DistutilsError(
'%s returned a bad status line. The server might be '
'down, %s' %
(url, v.line)
)
except http_client.HTTPException as v:
if warning:
self.warn(warning, v)
else:
raise DistutilsError("Download error for %s: %s"
% (url, v))
def _download_url(self, scheme, url, tmpdir):
# Determine download filename
#
name, fragment = egg_info_for_url(url)
if name:
while '..' in name:
name = name.replace('..', '.').replace('\\', '_')
else:
name = "__downloaded__" # default if URL has no path contents
if name.endswith('.egg.zip'):
name = name[:-4] # strip the extra .zip before download
filename = os.path.join(tmpdir, name)
# Download the file
#
if scheme == 'svn' or scheme.startswith('svn+'):
return self._download_svn(url, filename)
elif scheme == 'git' or scheme.startswith('git+'):
return self._download_git(url, filename)
elif scheme.startswith('hg+'):
return self._download_hg(url, filename)
elif scheme == 'file':
return urllib.request.url2pathname(urllib.parse.urlparse(url)[2])
else:
self.url_ok(url, True) # raises error if not allowed
return self._attempt_download(url, filename)
def scan_url(self, url):
self.process_url(url, True)
def _attempt_download(self, url, filename):
headers = self._download_to(url, filename)
if 'html' in headers.get('content-type', '').lower():
return self._download_html(url, headers, filename)
else:
return filename
def _download_html(self, url, headers, filename):
file = open(filename)
for line in file:
if line.strip():
# Check for a subversion index page
if re.search(r'([^- ]+ - )?Revision \d+:', line):
# it's a subversion index page:
file.close()
os.unlink(filename)
return self._download_svn(url, filename)
break # not an index page
file.close()
os.unlink(filename)
raise DistutilsError("Unexpected HTML page found at " + url)
def _download_svn(self, url, filename):
url = url.split('#', 1)[0] # remove any fragment for svn's sake
creds = ''
if url.lower().startswith('svn:') and '@' in url:
scheme, netloc, path, p, q, f = urllib.parse.urlparse(url)
if not netloc and path.startswith('//') and '/' in path[2:]:
netloc, path = path[2:].split('/', 1)
auth, host = splituser(netloc)
if auth:
if ':' in auth:
user, pw = auth.split(':', 1)
creds = " --username=%s --password=%s" % (user, pw)
else:
creds = " --username=" + auth
netloc = host
parts = scheme, netloc, url, p, q, f
url = urllib.parse.urlunparse(parts)
self.info("Doing subversion checkout from %s to %s", url, filename)
os.system("svn checkout%s -q %s %s" % (creds, url, filename))
return filename
@staticmethod
def _vcs_split_rev_from_url(url, pop_prefix=False):
scheme, netloc, path, query, frag = urllib.parse.urlsplit(url)
scheme = scheme.split('+', 1)[-1]
# Some fragment identification fails
path = path.split('#', 1)[0]
rev = None
if '@' in path:
path, rev = path.rsplit('@', 1)
# Also, discard fragment
url = urllib.parse.urlunsplit((scheme, netloc, path, query, ''))
return url, rev
def _download_git(self, url, filename):
filename = filename.split('#', 1)[0]
url, rev = self._vcs_split_rev_from_url(url, pop_prefix=True)
self.info("Doing git clone from %s to %s", url, filename)
os.system("git clone --quiet %s %s" % (url, filename))
if rev is not None:
self.info("Checking out %s", rev)
os.system("(cd %s && git checkout --quiet %s)" % (
filename,
rev,
))
return filename
def _download_hg(self, url, filename):
filename = filename.split('#', 1)[0]
url, rev = self._vcs_split_rev_from_url(url, pop_prefix=True)
self.info("Doing hg clone from %s to %s", url, filename)
os.system("hg clone --quiet %s %s" % (url, filename))
if rev is not None:
self.info("Updating to %s", rev)
os.system("(cd %s && hg up -C -r %s >&-)" % (
filename,
rev,
))
return filename
def debug(self, msg, *args):
log.debug(msg, *args)
def info(self, msg, *args):
log.info(msg, *args)
def warn(self, msg, *args):
log.warn(msg, *args)
# This pattern matches a character entity reference (a decimal numeric
# references, a hexadecimal numeric reference, or a named reference).
entity_sub = re.compile(r'&(#(\d+|x[\da-fA-F]+)|[\w.:-]+);?').sub
def uchr(c):
if not isinstance(c, int):
return c
if c > 255:
return six.unichr(c)
return chr(c)
def decode_entity(match):
what = match.group(1)
if what.startswith('#x'):
what = int(what[2:], 16)
elif what.startswith('#'):
what = int(what[1:])
else:
what = six.moves.html_entities.name2codepoint.get(what, match.group(0))
return uchr(what)
def htmldecode(text):
"""Decode HTML entities in the given text."""
return entity_sub(decode_entity, text)
def socket_timeout(timeout=15):
def _socket_timeout(func):
def _socket_timeout(*args, **kwargs):
old_timeout = socket.getdefaulttimeout()
socket.setdefaulttimeout(timeout)
try:
return func(*args, **kwargs)
finally:
socket.setdefaulttimeout(old_timeout)
return _socket_timeout
return _socket_timeout
def _encode_auth(auth):
"""
A function compatible with Python 2.3-3.3 that will encode
auth from a URL suitable for an HTTP header.
>>> str(_encode_auth('username%3Apassword'))
'dXNlcm5hbWU6cGFzc3dvcmQ='
Long auth strings should not cause a newline to be inserted.
>>> long_auth = 'username:' + 'password'*10
>>> chr(10) in str(_encode_auth(long_auth))
False
"""
auth_s = urllib.parse.unquote(auth)
# convert to bytes
auth_bytes = auth_s.encode()
# use the legacy interface for Python 2.3 support
encoded_bytes = base64.encodestring(auth_bytes)
# convert back to a string
encoded = encoded_bytes.decode()
# strip the trailing carriage return
return encoded.replace('\n', '')
class Credential(object):
"""
A username/password pair. Use like a namedtuple.
"""
def __init__(self, username, password):
self.username = username
self.password = password
def __iter__(self):
yield self.username
yield self.password
def __str__(self):
return '%(username)s:%(password)s' % vars(self)
class PyPIConfig(configparser.RawConfigParser):
def __init__(self):
"""
Load from ~/.pypirc
"""
defaults = dict.fromkeys(['username', 'password', 'repository'], '')
configparser.RawConfigParser.__init__(self, defaults)
rc = os.path.join(os.path.expanduser('~'), '.pypirc')
if os.path.exists(rc):
self.read(rc)
@property
def creds_by_repository(self):
sections_with_repositories = [
section for section in self.sections()
if self.get(section, 'repository').strip()
]
return dict(map(self._get_repo_cred, sections_with_repositories))
def _get_repo_cred(self, section):
repo = self.get(section, 'repository').strip()
return repo, Credential(
self.get(section, 'username').strip(),
self.get(section, 'password').strip(),
)
def find_credential(self, url):
"""
If the URL indicated appears to be a repository defined in this
config, return the credential for that repository.
"""
for repository, cred in self.creds_by_repository.items():
if url.startswith(repository):
return cred
def open_with_auth(url, opener=urllib.request.urlopen):
"""Open a urllib2 request, handling HTTP authentication"""
scheme, netloc, path, params, query, frag = urllib.parse.urlparse(url)
# Double scheme does not raise on Mac OS X as revealed by a
# failing test. We would expect "nonnumeric port". Refs #20.
if netloc.endswith(':'):
raise http_client.InvalidURL("nonnumeric port: ''")
if scheme in ('http', 'https'):
auth, host = splituser(netloc)
else:
auth = None
if not auth:
cred = PyPIConfig().find_credential(url)
if cred:
auth = str(cred)
info = cred.username, url
log.info('Authenticating as %s for %s (from .pypirc)', *info)
if auth:
auth = "Basic " + _encode_auth(auth)
parts = scheme, host, path, params, query, frag
new_url = urllib.parse.urlunparse(parts)
request = urllib.request.Request(new_url)
request.add_header("Authorization", auth)
else:
request = urllib.request.Request(url)
request.add_header('User-Agent', user_agent)
fp = opener(request)
if auth:
# Put authentication info back into request URL if same host,
# so that links found on the page will work
s2, h2, path2, param2, query2, frag2 = urllib.parse.urlparse(fp.url)
if s2 == scheme and h2 == host:
parts = s2, netloc, path2, param2, query2, frag2
fp.url = urllib.parse.urlunparse(parts)
return fp
# adding a timeout to avoid freezing package_index
open_with_auth = socket_timeout(_SOCKET_TIMEOUT)(open_with_auth)
def fix_sf_url(url):
return url # backward compatibility
def local_open(url):
"""Read a local path, with special support for directories"""
scheme, server, path, param, query, frag = urllib.parse.urlparse(url)
filename = urllib.request.url2pathname(path)
if os.path.isfile(filename):
return urllib.request.urlopen(url)
elif path.endswith('/') and os.path.isdir(filename):
files = []
for f in os.listdir(filename):
filepath = os.path.join(filename, f)
if f == 'index.html':
with open(filepath, 'r') as fp:
body = fp.read()
break
elif os.path.isdir(filepath):
f += '/'
files.append('<a href="{name}">{name}</a>'.format(name=f))
else:
tmpl = ("<html><head><title>{url}"
"{files} |