1103 lines
39 KiB
Python
1103 lines
39 KiB
Python
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"""Routines related to PyPI, indexes"""
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from __future__ import absolute_import
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import logging
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import cgi
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from collections import namedtuple
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import itertools
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import sys
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import os
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import re
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import mimetypes
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import posixpath
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import warnings
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from pip._vendor.six.moves.urllib import parse as urllib_parse
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from pip._vendor.six.moves.urllib import request as urllib_request
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from pip.compat import ipaddress
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from pip.utils import (
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cached_property, splitext, normalize_path,
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ARCHIVE_EXTENSIONS, SUPPORTED_EXTENSIONS,
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)
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from pip.utils.deprecation import RemovedInPip10Warning
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from pip.utils.logging import indent_log
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from pip.utils.packaging import check_requires_python
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from pip.exceptions import (
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DistributionNotFound, BestVersionAlreadyInstalled, InvalidWheelFilename,
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UnsupportedWheel,
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)
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from pip.download import HAS_TLS, is_url, path_to_url, url_to_path
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from pip.wheel import Wheel, wheel_ext
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from pip.pep425tags import get_supported
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from pip._vendor import html5lib, requests, six
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from pip._vendor.packaging.version import parse as parse_version
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from pip._vendor.packaging.utils import canonicalize_name
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from pip._vendor.packaging import specifiers
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from pip._vendor.requests.exceptions import SSLError
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from pip._vendor.distlib.compat import unescape
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__all__ = ['FormatControl', 'fmt_ctl_handle_mutual_exclude', 'PackageFinder']
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SECURE_ORIGINS = [
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# protocol, hostname, port
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# Taken from Chrome's list of secure origins (See: http://bit.ly/1qrySKC)
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("https", "*", "*"),
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("*", "localhost", "*"),
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("*", "127.0.0.0/8", "*"),
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("*", "::1/128", "*"),
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("file", "*", None),
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# ssh is always secure.
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("ssh", "*", "*"),
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]
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logger = logging.getLogger(__name__)
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class InstallationCandidate(object):
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def __init__(self, project, version, location):
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self.project = project
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self.version = parse_version(version)
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self.location = location
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self._key = (self.project, self.version, self.location)
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def __repr__(self):
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return "<InstallationCandidate({0!r}, {1!r}, {2!r})>".format(
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self.project, self.version, self.location,
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)
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def __hash__(self):
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return hash(self._key)
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def __lt__(self, other):
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return self._compare(other, lambda s, o: s < o)
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def __le__(self, other):
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return self._compare(other, lambda s, o: s <= o)
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def __eq__(self, other):
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return self._compare(other, lambda s, o: s == o)
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def __ge__(self, other):
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return self._compare(other, lambda s, o: s >= o)
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def __gt__(self, other):
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return self._compare(other, lambda s, o: s > o)
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def __ne__(self, other):
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return self._compare(other, lambda s, o: s != o)
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def _compare(self, other, method):
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if not isinstance(other, InstallationCandidate):
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return NotImplemented
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return method(self._key, other._key)
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class PackageFinder(object):
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"""This finds packages.
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This is meant to match easy_install's technique for looking for
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packages, by reading pages and looking for appropriate links.
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"""
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def __init__(self, find_links, index_urls, allow_all_prereleases=False,
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trusted_hosts=None, process_dependency_links=False,
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session=None, format_control=None, platform=None,
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versions=None, abi=None, implementation=None):
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"""Create a PackageFinder.
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:param format_control: A FormatControl object or None. Used to control
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the selection of source packages / binary packages when consulting
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the index and links.
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:param platform: A string or None. If None, searches for packages
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that are supported by the current system. Otherwise, will find
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packages that can be built on the platform passed in. These
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packages will only be downloaded for distribution: they will
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not be built locally.
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:param versions: A list of strings or None. This is passed directly
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to pep425tags.py in the get_supported() method.
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:param abi: A string or None. This is passed directly
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to pep425tags.py in the get_supported() method.
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:param implementation: A string or None. This is passed directly
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to pep425tags.py in the get_supported() method.
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"""
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if session is None:
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raise TypeError(
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"PackageFinder() missing 1 required keyword argument: "
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"'session'"
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)
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# Build find_links. If an argument starts with ~, it may be
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# a local file relative to a home directory. So try normalizing
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# it and if it exists, use the normalized version.
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# This is deliberately conservative - it might be fine just to
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# blindly normalize anything starting with a ~...
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self.find_links = []
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for link in find_links:
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if link.startswith('~'):
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new_link = normalize_path(link)
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if os.path.exists(new_link):
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link = new_link
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self.find_links.append(link)
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self.index_urls = index_urls
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self.dependency_links = []
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# These are boring links that have already been logged somehow:
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self.logged_links = set()
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self.format_control = format_control or FormatControl(set(), set())
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# Domains that we won't emit warnings for when not using HTTPS
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self.secure_origins = [
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("*", host, "*")
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for host in (trusted_hosts if trusted_hosts else [])
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]
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# Do we want to allow _all_ pre-releases?
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self.allow_all_prereleases = allow_all_prereleases
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# Do we process dependency links?
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self.process_dependency_links = process_dependency_links
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# The Session we'll use to make requests
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self.session = session
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# The valid tags to check potential found wheel candidates against
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self.valid_tags = get_supported(
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versions=versions,
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platform=platform,
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abi=abi,
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impl=implementation,
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)
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# If we don't have TLS enabled, then WARN if anyplace we're looking
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# relies on TLS.
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if not HAS_TLS:
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for link in itertools.chain(self.index_urls, self.find_links):
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parsed = urllib_parse.urlparse(link)
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if parsed.scheme == "https":
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logger.warning(
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"pip is configured with locations that require "
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"TLS/SSL, however the ssl module in Python is not "
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"available."
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)
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break
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def add_dependency_links(self, links):
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# # FIXME: this shouldn't be global list this, it should only
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# # apply to requirements of the package that specifies the
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# # dependency_links value
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# # FIXME: also, we should track comes_from (i.e., use Link)
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if self.process_dependency_links:
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warnings.warn(
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"Dependency Links processing has been deprecated and will be "
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"removed in a future release.",
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RemovedInPip10Warning,
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)
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self.dependency_links.extend(links)
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@staticmethod
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def _sort_locations(locations, expand_dir=False):
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"""
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Sort locations into "files" (archives) and "urls", and return
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a pair of lists (files,urls)
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"""
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files = []
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urls = []
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# puts the url for the given file path into the appropriate list
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def sort_path(path):
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url = path_to_url(path)
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if mimetypes.guess_type(url, strict=False)[0] == 'text/html':
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urls.append(url)
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else:
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files.append(url)
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for url in locations:
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is_local_path = os.path.exists(url)
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is_file_url = url.startswith('file:')
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if is_local_path or is_file_url:
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if is_local_path:
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path = url
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else:
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path = url_to_path(url)
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if os.path.isdir(path):
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if expand_dir:
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path = os.path.realpath(path)
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for item in os.listdir(path):
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sort_path(os.path.join(path, item))
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elif is_file_url:
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urls.append(url)
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elif os.path.isfile(path):
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sort_path(path)
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else:
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logger.warning(
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"Url '%s' is ignored: it is neither a file "
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"nor a directory.", url)
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elif is_url(url):
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# Only add url with clear scheme
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urls.append(url)
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else:
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logger.warning(
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"Url '%s' is ignored. It is either a non-existing "
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"path or lacks a specific scheme.", url)
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return files, urls
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def _candidate_sort_key(self, candidate):
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"""
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Function used to generate link sort key for link tuples.
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The greater the return value, the more preferred it is.
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If not finding wheels, then sorted by version only.
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If finding wheels, then the sort order is by version, then:
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1. existing installs
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2. wheels ordered via Wheel.support_index_min(self.valid_tags)
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3. source archives
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Note: it was considered to embed this logic into the Link
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comparison operators, but then different sdist links
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with the same version, would have to be considered equal
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"""
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support_num = len(self.valid_tags)
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if candidate.location.is_wheel:
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# can raise InvalidWheelFilename
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wheel = Wheel(candidate.location.filename)
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if not wheel.supported(self.valid_tags):
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raise UnsupportedWheel(
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"%s is not a supported wheel for this platform. It "
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"can't be sorted." % wheel.filename
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)
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pri = -(wheel.support_index_min(self.valid_tags))
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else: # sdist
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pri = -(support_num)
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return (candidate.version, pri)
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def _validate_secure_origin(self, logger, location):
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# Determine if this url used a secure transport mechanism
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parsed = urllib_parse.urlparse(str(location))
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origin = (parsed.scheme, parsed.hostname, parsed.port)
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# The protocol to use to see if the protocol matches.
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# Don't count the repository type as part of the protocol: in
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# cases such as "git+ssh", only use "ssh". (I.e., Only verify against
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# the last scheme.)
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protocol = origin[0].rsplit('+', 1)[-1]
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# Determine if our origin is a secure origin by looking through our
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# hardcoded list of secure origins, as well as any additional ones
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# configured on this PackageFinder instance.
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for secure_origin in (SECURE_ORIGINS + self.secure_origins):
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if protocol != secure_origin[0] and secure_origin[0] != "*":
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continue
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try:
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# We need to do this decode dance to ensure that we have a
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# unicode object, even on Python 2.x.
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addr = ipaddress.ip_address(
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origin[1]
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if (
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isinstance(origin[1], six.text_type) or
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origin[1] is None
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)
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else origin[1].decode("utf8")
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)
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network = ipaddress.ip_network(
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secure_origin[1]
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if isinstance(secure_origin[1], six.text_type)
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else secure_origin[1].decode("utf8")
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)
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except ValueError:
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# We don't have both a valid address or a valid network, so
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# we'll check this origin against hostnames.
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if (origin[1] and
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origin[1].lower() != secure_origin[1].lower() and
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secure_origin[1] != "*"):
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continue
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else:
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# We have a valid address and network, so see if the address
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# is contained within the network.
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if addr not in network:
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continue
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# Check to see if the port patches
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if (origin[2] != secure_origin[2] and
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secure_origin[2] != "*" and
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secure_origin[2] is not None):
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continue
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# If we've gotten here, then this origin matches the current
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# secure origin and we should return True
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return True
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# If we've gotten to this point, then the origin isn't secure and we
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# will not accept it as a valid location to search. We will however
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# log a warning that we are ignoring it.
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logger.warning(
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"The repository located at %s is not a trusted or secure host and "
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"is being ignored. If this repository is available via HTTPS it "
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"is recommended to use HTTPS instead, otherwise you may silence "
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"this warning and allow it anyways with '--trusted-host %s'.",
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parsed.hostname,
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parsed.hostname,
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)
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return False
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def _get_index_urls_locations(self, project_name):
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"""Returns the locations found via self.index_urls
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Checks the url_name on the main (first in the list) index and
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use this url_name to produce all locations
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"""
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def mkurl_pypi_url(url):
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loc = posixpath.join(
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url,
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urllib_parse.quote(canonicalize_name(project_name)))
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# For maximum compatibility with easy_install, ensure the path
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# ends in a trailing slash. Although this isn't in the spec
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# (and PyPI can handle it without the slash) some other index
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# implementations might break if they relied on easy_install's
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# behavior.
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if not loc.endswith('/'):
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loc = loc + '/'
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return loc
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return [mkurl_pypi_url(url) for url in self.index_urls]
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def find_all_candidates(self, project_name):
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"""Find all available InstallationCandidate for project_name
|
||
|
|
|
||
|
|
This checks index_urls, find_links and dependency_links.
|
||
|
|
All versions found are returned as an InstallationCandidate list.
|
||
|
|
|
||
|
|
See _link_package_versions for details on which files are accepted
|
||
|
|
"""
|
||
|
|
index_locations = self._get_index_urls_locations(project_name)
|
||
|
|
index_file_loc, index_url_loc = self._sort_locations(index_locations)
|
||
|
|
fl_file_loc, fl_url_loc = self._sort_locations(
|
||
|
|
self.find_links, expand_dir=True)
|
||
|
|
dep_file_loc, dep_url_loc = self._sort_locations(self.dependency_links)
|
||
|
|
|
||
|
|
file_locations = (
|
||
|
|
Link(url) for url in itertools.chain(
|
||
|
|
index_file_loc, fl_file_loc, dep_file_loc)
|
||
|
|
)
|
||
|
|
|
||
|
|
# We trust every url that the user has given us whether it was given
|
||
|
|
# via --index-url or --find-links
|
||
|
|
# We explicitly do not trust links that came from dependency_links
|
||
|
|
# We want to filter out any thing which does not have a secure origin.
|
||
|
|
url_locations = [
|
||
|
|
link for link in itertools.chain(
|
||
|
|
(Link(url) for url in index_url_loc),
|
||
|
|
(Link(url) for url in fl_url_loc),
|
||
|
|
(Link(url) for url in dep_url_loc),
|
||
|
|
)
|
||
|
|
if self._validate_secure_origin(logger, link)
|
||
|
|
]
|
||
|
|
|
||
|
|
logger.debug('%d location(s) to search for versions of %s:',
|
||
|
|
len(url_locations), project_name)
|
||
|
|
|
||
|
|
for location in url_locations:
|
||
|
|
logger.debug('* %s', location)
|
||
|
|
|
||
|
|
canonical_name = canonicalize_name(project_name)
|
||
|
|
formats = fmt_ctl_formats(self.format_control, canonical_name)
|
||
|
|
search = Search(project_name, canonical_name, formats)
|
||
|
|
find_links_versions = self._package_versions(
|
||
|
|
# We trust every directly linked archive in find_links
|
||
|
|
(Link(url, '-f') for url in self.find_links),
|
||
|
|
search
|
||
|
|
)
|
||
|
|
|
||
|
|
page_versions = []
|
||
|
|
for page in self._get_pages(url_locations, project_name):
|
||
|
|
logger.debug('Analyzing links from page %s', page.url)
|
||
|
|
with indent_log():
|
||
|
|
page_versions.extend(
|
||
|
|
self._package_versions(page.links, search)
|
||
|
|
)
|
||
|
|
|
||
|
|
dependency_versions = self._package_versions(
|
||
|
|
(Link(url) for url in self.dependency_links), search
|
||
|
|
)
|
||
|
|
if dependency_versions:
|
||
|
|
logger.debug(
|
||
|
|
'dependency_links found: %s',
|
||
|
|
', '.join([
|
||
|
|
version.location.url for version in dependency_versions
|
||
|
|
])
|
||
|
|
)
|
||
|
|
|
||
|
|
file_versions = self._package_versions(file_locations, search)
|
||
|
|
if file_versions:
|
||
|
|
file_versions.sort(reverse=True)
|
||
|
|
logger.debug(
|
||
|
|
'Local files found: %s',
|
||
|
|
', '.join([
|
||
|
|
url_to_path(candidate.location.url)
|
||
|
|
for candidate in file_versions
|
||
|
|
])
|
||
|
|
)
|
||
|
|
|
||
|
|
# This is an intentional priority ordering
|
||
|
|
return (
|
||
|
|
file_versions + find_links_versions + page_versions +
|
||
|
|
dependency_versions
|
||
|
|
)
|
||
|
|
|
||
|
|
def find_requirement(self, req, upgrade):
|
||
|
|
"""Try to find a Link matching req
|
||
|
|
|
||
|
|
Expects req, an InstallRequirement and upgrade, a boolean
|
||
|
|
Returns a Link if found,
|
||
|
|
Raises DistributionNotFound or BestVersionAlreadyInstalled otherwise
|
||
|
|
"""
|
||
|
|
all_candidates = self.find_all_candidates(req.name)
|
||
|
|
|
||
|
|
# Filter out anything which doesn't match our specifier
|
||
|
|
compatible_versions = set(
|
||
|
|
req.specifier.filter(
|
||
|
|
# We turn the version object into a str here because otherwise
|
||
|
|
# when we're debundled but setuptools isn't, Python will see
|
||
|
|
# packaging.version.Version and
|
||
|
|
# pkg_resources._vendor.packaging.version.Version as different
|
||
|
|
# types. This way we'll use a str as a common data interchange
|
||
|
|
# format. If we stop using the pkg_resources provided specifier
|
||
|
|
# and start using our own, we can drop the cast to str().
|
||
|
|
[str(c.version) for c in all_candidates],
|
||
|
|
prereleases=(
|
||
|
|
self.allow_all_prereleases
|
||
|
|
if self.allow_all_prereleases else None
|
||
|
|
),
|
||
|
|
)
|
||
|
|
)
|
||
|
|
applicable_candidates = [
|
||
|
|
# Again, converting to str to deal with debundling.
|
||
|
|
c for c in all_candidates if str(c.version) in compatible_versions
|
||
|
|
]
|
||
|
|
|
||
|
|
if applicable_candidates:
|
||
|
|
best_candidate = max(applicable_candidates,
|
||
|
|
key=self._candidate_sort_key)
|
||
|
|
else:
|
||
|
|
best_candidate = None
|
||
|
|
|
||
|
|
if req.satisfied_by is not None:
|
||
|
|
installed_version = parse_version(req.satisfied_by.version)
|
||
|
|
else:
|
||
|
|
installed_version = None
|
||
|
|
|
||
|
|
if installed_version is None and best_candidate is None:
|
||
|
|
logger.critical(
|
||
|
|
'Could not find a version that satisfies the requirement %s '
|
||
|
|
'(from versions: %s)',
|
||
|
|
req,
|
||
|
|
', '.join(
|
||
|
|
sorted(
|
||
|
|
set(str(c.version) for c in all_candidates),
|
||
|
|
key=parse_version,
|
||
|
|
)
|
||
|
|
)
|
||
|
|
)
|
||
|
|
|
||
|
|
raise DistributionNotFound(
|
||
|
|
'No matching distribution found for %s' % req
|
||
|
|
)
|
||
|
|
|
||
|
|
best_installed = False
|
||
|
|
if installed_version and (
|
||
|
|
best_candidate is None or
|
||
|
|
best_candidate.version <= installed_version):
|
||
|
|
best_installed = True
|
||
|
|
|
||
|
|
if not upgrade and installed_version is not None:
|
||
|
|
if best_installed:
|
||
|
|
logger.debug(
|
||
|
|
'Existing installed version (%s) is most up-to-date and '
|
||
|
|
'satisfies requirement',
|
||
|
|
installed_version,
|
||
|
|
)
|
||
|
|
else:
|
||
|
|
logger.debug(
|
||
|
|
'Existing installed version (%s) satisfies requirement '
|
||
|
|
'(most up-to-date version is %s)',
|
||
|
|
installed_version,
|
||
|
|
best_candidate.version,
|
||
|
|
)
|
||
|
|
return None
|
||
|
|
|
||
|
|
if best_installed:
|
||
|
|
# We have an existing version, and its the best version
|
||
|
|
logger.debug(
|
||
|
|
'Installed version (%s) is most up-to-date (past versions: '
|
||
|
|
'%s)',
|
||
|
|
installed_version,
|
||
|
|
', '.join(sorted(compatible_versions, key=parse_version)) or
|
||
|
|
"none",
|
||
|
|
)
|
||
|
|
raise BestVersionAlreadyInstalled
|
||
|
|
|
||
|
|
logger.debug(
|
||
|
|
'Using version %s (newest of versions: %s)',
|
||
|
|
best_candidate.version,
|
||
|
|
', '.join(sorted(compatible_versions, key=parse_version))
|
||
|
|
)
|
||
|
|
return best_candidate.location
|
||
|
|
|
||
|
|
def _get_pages(self, locations, project_name):
|
||
|
|
"""
|
||
|
|
Yields (page, page_url) from the given locations, skipping
|
||
|
|
locations that have errors.
|
||
|
|
"""
|
||
|
|
seen = set()
|
||
|
|
for location in locations:
|
||
|
|
if location in seen:
|
||
|
|
continue
|
||
|
|
seen.add(location)
|
||
|
|
|
||
|
|
page = self._get_page(location)
|
||
|
|
if page is None:
|
||
|
|
continue
|
||
|
|
|
||
|
|
yield page
|
||
|
|
|
||
|
|
_py_version_re = re.compile(r'-py([123]\.?[0-9]?)$')
|
||
|
|
|
||
|
|
def _sort_links(self, links):
|
||
|
|
"""
|
||
|
|
Returns elements of links in order, non-egg links first, egg links
|
||
|
|
second, while eliminating duplicates
|
||
|
|
"""
|
||
|
|
eggs, no_eggs = [], []
|
||
|
|
seen = set()
|
||
|
|
for link in links:
|
||
|
|
if link not in seen:
|
||
|
|
seen.add(link)
|
||
|
|
if link.egg_fragment:
|
||
|
|
eggs.append(link)
|
||
|
|
else:
|
||
|
|
no_eggs.append(link)
|
||
|
|
return no_eggs + eggs
|
||
|
|
|
||
|
|
def _package_versions(self, links, search):
|
||
|
|
result = []
|
||
|
|
for link in self._sort_links(links):
|
||
|
|
v = self._link_package_versions(link, search)
|
||
|
|
if v is not None:
|
||
|
|
result.append(v)
|
||
|
|
return result
|
||
|
|
|
||
|
|
def _log_skipped_link(self, link, reason):
|
||
|
|
if link not in self.logged_links:
|
||
|
|
logger.debug('Skipping link %s; %s', link, reason)
|
||
|
|
self.logged_links.add(link)
|
||
|
|
|
||
|
|
def _link_package_versions(self, link, search):
|
||
|
|
"""Return an InstallationCandidate or None"""
|
||
|
|
version = None
|
||
|
|
if link.egg_fragment:
|
||
|
|
egg_info = link.egg_fragment
|
||
|
|
ext = link.ext
|
||
|
|
else:
|
||
|
|
egg_info, ext = link.splitext()
|
||
|
|
if not ext:
|
||
|
|
self._log_skipped_link(link, 'not a file')
|
||
|
|
return
|
||
|
|
if ext not in SUPPORTED_EXTENSIONS:
|
||
|
|
self._log_skipped_link(
|
||
|
|
link, 'unsupported archive format: %s' % ext)
|
||
|
|
return
|
||
|
|
if "binary" not in search.formats and ext == wheel_ext:
|
||
|
|
self._log_skipped_link(
|
||
|
|
link, 'No binaries permitted for %s' % search.supplied)
|
||
|
|
return
|
||
|
|
if "macosx10" in link.path and ext == '.zip':
|
||
|
|
self._log_skipped_link(link, 'macosx10 one')
|
||
|
|
return
|
||
|
|
if ext == wheel_ext:
|
||
|
|
try:
|
||
|
|
wheel = Wheel(link.filename)
|
||
|
|
except InvalidWheelFilename:
|
||
|
|
self._log_skipped_link(link, 'invalid wheel filename')
|
||
|
|
return
|
||
|
|
if canonicalize_name(wheel.name) != search.canonical:
|
||
|
|
self._log_skipped_link(
|
||
|
|
link, 'wrong project name (not %s)' % search.supplied)
|
||
|
|
return
|
||
|
|
|
||
|
|
if not wheel.supported(self.valid_tags):
|
||
|
|
self._log_skipped_link(
|
||
|
|
link, 'it is not compatible with this Python')
|
||
|
|
return
|
||
|
|
|
||
|
|
version = wheel.version
|
||
|
|
|
||
|
|
# This should be up by the search.ok_binary check, but see issue 2700.
|
||
|
|
if "source" not in search.formats and ext != wheel_ext:
|
||
|
|
self._log_skipped_link(
|
||
|
|
link, 'No sources permitted for %s' % search.supplied)
|
||
|
|
return
|
||
|
|
|
||
|
|
if not version:
|
||
|
|
version = egg_info_matches(egg_info, search.supplied, link)
|
||
|
|
if version is None:
|
||
|
|
self._log_skipped_link(
|
||
|
|
link, 'wrong project name (not %s)' % search.supplied)
|
||
|
|
return
|
||
|
|
|
||
|
|
match = self._py_version_re.search(version)
|
||
|
|
if match:
|
||
|
|
version = version[:match.start()]
|
||
|
|
py_version = match.group(1)
|
||
|
|
if py_version != sys.version[:3]:
|
||
|
|
self._log_skipped_link(
|
||
|
|
link, 'Python version is incorrect')
|
||
|
|
return
|
||
|
|
try:
|
||
|
|
support_this_python = check_requires_python(link.requires_python)
|
||
|
|
except specifiers.InvalidSpecifier:
|
||
|
|
logger.debug("Package %s has an invalid Requires-Python entry: %s",
|
||
|
|
link.filename, link.requires_python)
|
||
|
|
support_this_python = True
|
||
|
|
|
||
|
|
if not support_this_python:
|
||
|
|
logger.debug("The package %s is incompatible with the python"
|
||
|
|
"version in use. Acceptable python versions are:%s",
|
||
|
|
link, link.requires_python)
|
||
|
|
return
|
||
|
|
logger.debug('Found link %s, version: %s', link, version)
|
||
|
|
|
||
|
|
return InstallationCandidate(search.supplied, version, link)
|
||
|
|
|
||
|
|
def _get_page(self, link):
|
||
|
|
return HTMLPage.get_page(link, session=self.session)
|
||
|
|
|
||
|
|
|
||
|
|
def egg_info_matches(
|
||
|
|
egg_info, search_name, link,
|
||
|
|
_egg_info_re=re.compile(r'([a-z0-9_.]+)-([a-z0-9_.!+-]+)', re.I)):
|
||
|
|
"""Pull the version part out of a string.
|
||
|
|
|
||
|
|
:param egg_info: The string to parse. E.g. foo-2.1
|
||
|
|
:param search_name: The name of the package this belongs to. None to
|
||
|
|
infer the name. Note that this cannot unambiguously parse strings
|
||
|
|
like foo-2-2 which might be foo, 2-2 or foo-2, 2.
|
||
|
|
:param link: The link the string came from, for logging on failure.
|
||
|
|
"""
|
||
|
|
match = _egg_info_re.search(egg_info)
|
||
|
|
if not match:
|
||
|
|
logger.debug('Could not parse version from link: %s', link)
|
||
|
|
return None
|
||
|
|
if search_name is None:
|
||
|
|
full_match = match.group(0)
|
||
|
|
return full_match[full_match.index('-'):]
|
||
|
|
name = match.group(0).lower()
|
||
|
|
# To match the "safe" name that pkg_resources creates:
|
||
|
|
name = name.replace('_', '-')
|
||
|
|
# project name and version must be separated by a dash
|
||
|
|
look_for = search_name.lower() + "-"
|
||
|
|
if name.startswith(look_for):
|
||
|
|
return match.group(0)[len(look_for):]
|
||
|
|
else:
|
||
|
|
return None
|
||
|
|
|
||
|
|
|
||
|
|
class HTMLPage(object):
|
||
|
|
"""Represents one page, along with its URL"""
|
||
|
|
|
||
|
|
def __init__(self, content, url, headers=None):
|
||
|
|
# Determine if we have any encoding information in our headers
|
||
|
|
encoding = None
|
||
|
|
if headers and "Content-Type" in headers:
|
||
|
|
content_type, params = cgi.parse_header(headers["Content-Type"])
|
||
|
|
|
||
|
|
if "charset" in params:
|
||
|
|
encoding = params['charset']
|
||
|
|
|
||
|
|
self.content = content
|
||
|
|
self.parsed = html5lib.parse(
|
||
|
|
self.content,
|
||
|
|
transport_encoding=encoding,
|
||
|
|
namespaceHTMLElements=False,
|
||
|
|
)
|
||
|
|
self.url = url
|
||
|
|
self.headers = headers
|
||
|
|
|
||
|
|
def __str__(self):
|
||
|
|
return self.url
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def get_page(cls, link, skip_archives=True, session=None):
|
||
|
|
if session is None:
|
||
|
|
raise TypeError(
|
||
|
|
"get_page() missing 1 required keyword argument: 'session'"
|
||
|
|
)
|
||
|
|
|
||
|
|
url = link.url
|
||
|
|
url = url.split('#', 1)[0]
|
||
|
|
|
||
|
|
# Check for VCS schemes that do not support lookup as web pages.
|
||
|
|
from pip.vcs import VcsSupport
|
||
|
|
for scheme in VcsSupport.schemes:
|
||
|
|
if url.lower().startswith(scheme) and url[len(scheme)] in '+:':
|
||
|
|
logger.debug('Cannot look at %s URL %s', scheme, link)
|
||
|
|
return None
|
||
|
|
|
||
|
|
try:
|
||
|
|
if skip_archives:
|
||
|
|
filename = link.filename
|
||
|
|
for bad_ext in ARCHIVE_EXTENSIONS:
|
||
|
|
if filename.endswith(bad_ext):
|
||
|
|
content_type = cls._get_content_type(
|
||
|
|
url, session=session,
|
||
|
|
)
|
||
|
|
if content_type.lower().startswith('text/html'):
|
||
|
|
break
|
||
|
|
else:
|
||
|
|
logger.debug(
|
||
|
|
'Skipping page %s because of Content-Type: %s',
|
||
|
|
link,
|
||
|
|
content_type,
|
||
|
|
)
|
||
|
|
return
|
||
|
|
|
||
|
|
logger.debug('Getting page %s', url)
|
||
|
|
|
||
|
|
# Tack index.html onto file:// URLs that point to directories
|
||
|
|
(scheme, netloc, path, params, query, fragment) = \
|
||
|
|
urllib_parse.urlparse(url)
|
||
|
|
if (scheme == 'file' and
|
||
|
|
os.path.isdir(urllib_request.url2pathname(path))):
|
||
|
|
# add trailing slash if not present so urljoin doesn't trim
|
||
|
|
# final segment
|
||
|
|
if not url.endswith('/'):
|
||
|
|
url += '/'
|
||
|
|
url = urllib_parse.urljoin(url, 'index.html')
|
||
|
|
logger.debug(' file: URL is directory, getting %s', url)
|
||
|
|
|
||
|
|
resp = session.get(
|
||
|
|
url,
|
||
|
|
headers={
|
||
|
|
"Accept": "text/html",
|
||
|
|
"Cache-Control": "max-age=600",
|
||
|
|
},
|
||
|
|
)
|
||
|
|
resp.raise_for_status()
|
||
|
|
|
||
|
|
# The check for archives above only works if the url ends with
|
||
|
|
# something that looks like an archive. However that is not a
|
||
|
|
# requirement of an url. Unless we issue a HEAD request on every
|
||
|
|
# url we cannot know ahead of time for sure if something is HTML
|
||
|
|
# or not. However we can check after we've downloaded it.
|
||
|
|
content_type = resp.headers.get('Content-Type', 'unknown')
|
||
|
|
if not content_type.lower().startswith("text/html"):
|
||
|
|
logger.debug(
|
||
|
|
'Skipping page %s because of Content-Type: %s',
|
||
|
|
link,
|
||
|
|
content_type,
|
||
|
|
)
|
||
|
|
return
|
||
|
|
|
||
|
|
inst = cls(resp.content, resp.url, resp.headers)
|
||
|
|
except requests.HTTPError as exc:
|
||
|
|
cls._handle_fail(link, exc, url)
|
||
|
|
except SSLError as exc:
|
||
|
|
reason = ("There was a problem confirming the ssl certificate: "
|
||
|
|
"%s" % exc)
|
||
|
|
cls._handle_fail(link, reason, url, meth=logger.info)
|
||
|
|
except requests.ConnectionError as exc:
|
||
|
|
cls._handle_fail(link, "connection error: %s" % exc, url)
|
||
|
|
except requests.Timeout:
|
||
|
|
cls._handle_fail(link, "timed out", url)
|
||
|
|
else:
|
||
|
|
return inst
|
||
|
|
|
||
|
|
@staticmethod
|
||
|
|
def _handle_fail(link, reason, url, meth=None):
|
||
|
|
if meth is None:
|
||
|
|
meth = logger.debug
|
||
|
|
|
||
|
|
meth("Could not fetch URL %s: %s - skipping", link, reason)
|
||
|
|
|
||
|
|
@staticmethod
|
||
|
|
def _get_content_type(url, session):
|
||
|
|
"""Get the Content-Type of the given url, using a HEAD request"""
|
||
|
|
scheme, netloc, path, query, fragment = urllib_parse.urlsplit(url)
|
||
|
|
if scheme not in ('http', 'https'):
|
||
|
|
# FIXME: some warning or something?
|
||
|
|
# assertion error?
|
||
|
|
return ''
|
||
|
|
|
||
|
|
resp = session.head(url, allow_redirects=True)
|
||
|
|
resp.raise_for_status()
|
||
|
|
|
||
|
|
return resp.headers.get("Content-Type", "")
|
||
|
|
|
||
|
|
@cached_property
|
||
|
|
def base_url(self):
|
||
|
|
bases = [
|
||
|
|
x for x in self.parsed.findall(".//base")
|
||
|
|
if x.get("href") is not None
|
||
|
|
]
|
||
|
|
if bases and bases[0].get("href"):
|
||
|
|
return bases[0].get("href")
|
||
|
|
else:
|
||
|
|
return self.url
|
||
|
|
|
||
|
|
@property
|
||
|
|
def links(self):
|
||
|
|
"""Yields all links in the page"""
|
||
|
|
for anchor in self.parsed.findall(".//a"):
|
||
|
|
if anchor.get("href"):
|
||
|
|
href = anchor.get("href")
|
||
|
|
url = self.clean_link(
|
||
|
|
urllib_parse.urljoin(self.base_url, href)
|
||
|
|
)
|
||
|
|
pyrequire = anchor.get('data-requires-python')
|
||
|
|
pyrequire = unescape(pyrequire) if pyrequire else None
|
||
|
|
yield Link(url, self, requires_python=pyrequire)
|
||
|
|
|
||
|
|
_clean_re = re.compile(r'[^a-z0-9$&+,/:;=?@.#%_\\|-]', re.I)
|
||
|
|
|
||
|
|
def clean_link(self, url):
|
||
|
|
"""Makes sure a link is fully encoded. That is, if a ' ' shows up in
|
||
|
|
the link, it will be rewritten to %20 (while not over-quoting
|
||
|
|
% or other characters)."""
|
||
|
|
return self._clean_re.sub(
|
||
|
|
lambda match: '%%%2x' % ord(match.group(0)), url)
|
||
|
|
|
||
|
|
|
||
|
|
class Link(object):
|
||
|
|
|
||
|
|
def __init__(self, url, comes_from=None, requires_python=None):
|
||
|
|
"""
|
||
|
|
Object representing a parsed link from https://pypi.python.org/simple/*
|
||
|
|
|
||
|
|
url:
|
||
|
|
url of the resource pointed to (href of the link)
|
||
|
|
comes_from:
|
||
|
|
instance of HTMLPage where the link was found, or string.
|
||
|
|
requires_python:
|
||
|
|
String containing the `Requires-Python` metadata field, specified
|
||
|
|
in PEP 345. This may be specified by a data-requires-python
|
||
|
|
attribute in the HTML link tag, as described in PEP 503.
|
||
|
|
"""
|
||
|
|
|
||
|
|
# url can be a UNC windows share
|
||
|
|
if url.startswith('\\\\'):
|
||
|
|
url = path_to_url(url)
|
||
|
|
|
||
|
|
self.url = url
|
||
|
|
self.comes_from = comes_from
|
||
|
|
self.requires_python = requires_python if requires_python else None
|
||
|
|
|
||
|
|
def __str__(self):
|
||
|
|
if self.requires_python:
|
||
|
|
rp = ' (requires-python:%s)' % self.requires_python
|
||
|
|
else:
|
||
|
|
rp = ''
|
||
|
|
if self.comes_from:
|
||
|
|
return '%s (from %s)%s' % (self.url, self.comes_from, rp)
|
||
|
|
else:
|
||
|
|
return str(self.url)
|
||
|
|
|
||
|
|
def __repr__(self):
|
||
|
|
return '<Link %s>' % self
|
||
|
|
|
||
|
|
def __eq__(self, other):
|
||
|
|
if not isinstance(other, Link):
|
||
|
|
return NotImplemented
|
||
|
|
return self.url == other.url
|
||
|
|
|
||
|
|
def __ne__(self, other):
|
||
|
|
if not isinstance(other, Link):
|
||
|
|
return NotImplemented
|
||
|
|
return self.url != other.url
|
||
|
|
|
||
|
|
def __lt__(self, other):
|
||
|
|
if not isinstance(other, Link):
|
||
|
|
return NotImplemented
|
||
|
|
return self.url < other.url
|
||
|
|
|
||
|
|
def __le__(self, other):
|
||
|
|
if not isinstance(other, Link):
|
||
|
|
return NotImplemented
|
||
|
|
return self.url <= other.url
|
||
|
|
|
||
|
|
def __gt__(self, other):
|
||
|
|
if not isinstance(other, Link):
|
||
|
|
return NotImplemented
|
||
|
|
return self.url > other.url
|
||
|
|
|
||
|
|
def __ge__(self, other):
|
||
|
|
if not isinstance(other, Link):
|
||
|
|
return NotImplemented
|
||
|
|
return self.url >= other.url
|
||
|
|
|
||
|
|
def __hash__(self):
|
||
|
|
return hash(self.url)
|
||
|
|
|
||
|
|
@property
|
||
|
|
def filename(self):
|
||
|
|
_, netloc, path, _, _ = urllib_parse.urlsplit(self.url)
|
||
|
|
name = posixpath.basename(path.rstrip('/')) or netloc
|
||
|
|
name = urllib_parse.unquote(name)
|
||
|
|
assert name, ('URL %r produced no filename' % self.url)
|
||
|
|
return name
|
||
|
|
|
||
|
|
@property
|
||
|
|
def scheme(self):
|
||
|
|
return urllib_parse.urlsplit(self.url)[0]
|
||
|
|
|
||
|
|
@property
|
||
|
|
def netloc(self):
|
||
|
|
return urllib_parse.urlsplit(self.url)[1]
|
||
|
|
|
||
|
|
@property
|
||
|
|
def path(self):
|
||
|
|
return urllib_parse.unquote(urllib_parse.urlsplit(self.url)[2])
|
||
|
|
|
||
|
|
def splitext(self):
|
||
|
|
return splitext(posixpath.basename(self.path.rstrip('/')))
|
||
|
|
|
||
|
|
@property
|
||
|
|
def ext(self):
|
||
|
|
return self.splitext()[1]
|
||
|
|
|
||
|
|
@property
|
||
|
|
def url_without_fragment(self):
|
||
|
|
scheme, netloc, path, query, fragment = urllib_parse.urlsplit(self.url)
|
||
|
|
return urllib_parse.urlunsplit((scheme, netloc, path, query, None))
|
||
|
|
|
||
|
|
_egg_fragment_re = re.compile(r'[#&]egg=([^&]*)')
|
||
|
|
|
||
|
|
@property
|
||
|
|
def egg_fragment(self):
|
||
|
|
match = self._egg_fragment_re.search(self.url)
|
||
|
|
if not match:
|
||
|
|
return None
|
||
|
|
return match.group(1)
|
||
|
|
|
||
|
|
_subdirectory_fragment_re = re.compile(r'[#&]subdirectory=([^&]*)')
|
||
|
|
|
||
|
|
@property
|
||
|
|
def subdirectory_fragment(self):
|
||
|
|
match = self._subdirectory_fragment_re.search(self.url)
|
||
|
|
if not match:
|
||
|
|
return None
|
||
|
|
return match.group(1)
|
||
|
|
|
||
|
|
_hash_re = re.compile(
|
||
|
|
r'(sha1|sha224|sha384|sha256|sha512|md5)=([a-f0-9]+)'
|
||
|
|
)
|
||
|
|
|
||
|
|
@property
|
||
|
|
def hash(self):
|
||
|
|
match = self._hash_re.search(self.url)
|
||
|
|
if match:
|
||
|
|
return match.group(2)
|
||
|
|
return None
|
||
|
|
|
||
|
|
@property
|
||
|
|
def hash_name(self):
|
||
|
|
match = self._hash_re.search(self.url)
|
||
|
|
if match:
|
||
|
|
return match.group(1)
|
||
|
|
return None
|
||
|
|
|
||
|
|
@property
|
||
|
|
def show_url(self):
|
||
|
|
return posixpath.basename(self.url.split('#', 1)[0].split('?', 1)[0])
|
||
|
|
|
||
|
|
@property
|
||
|
|
def is_wheel(self):
|
||
|
|
return self.ext == wheel_ext
|
||
|
|
|
||
|
|
@property
|
||
|
|
def is_artifact(self):
|
||
|
|
"""
|
||
|
|
Determines if this points to an actual artifact (e.g. a tarball) or if
|
||
|
|
it points to an "abstract" thing like a path or a VCS location.
|
||
|
|
"""
|
||
|
|
from pip.vcs import vcs
|
||
|
|
|
||
|
|
if self.scheme in vcs.all_schemes:
|
||
|
|
return False
|
||
|
|
|
||
|
|
return True
|
||
|
|
|
||
|
|
|
||
|
|
FormatControl = namedtuple('FormatControl', 'no_binary only_binary')
|
||
|
|
"""This object has two fields, no_binary and only_binary.
|
||
|
|
|
||
|
|
If a field is falsy, it isn't set. If it is {':all:'}, it should match all
|
||
|
|
packages except those listed in the other field. Only one field can be set
|
||
|
|
to {':all:'} at a time. The rest of the time exact package name matches
|
||
|
|
are listed, with any given package only showing up in one field at a time.
|
||
|
|
"""
|
||
|
|
|
||
|
|
|
||
|
|
def fmt_ctl_handle_mutual_exclude(value, target, other):
|
||
|
|
new = value.split(',')
|
||
|
|
while ':all:' in new:
|
||
|
|
other.clear()
|
||
|
|
target.clear()
|
||
|
|
target.add(':all:')
|
||
|
|
del new[:new.index(':all:') + 1]
|
||
|
|
if ':none:' not in new:
|
||
|
|
# Without a none, we want to discard everything as :all: covers it
|
||
|
|
return
|
||
|
|
for name in new:
|
||
|
|
if name == ':none:':
|
||
|
|
target.clear()
|
||
|
|
continue
|
||
|
|
name = canonicalize_name(name)
|
||
|
|
other.discard(name)
|
||
|
|
target.add(name)
|
||
|
|
|
||
|
|
|
||
|
|
def fmt_ctl_formats(fmt_ctl, canonical_name):
|
||
|
|
result = set(["binary", "source"])
|
||
|
|
if canonical_name in fmt_ctl.only_binary:
|
||
|
|
result.discard('source')
|
||
|
|
elif canonical_name in fmt_ctl.no_binary:
|
||
|
|
result.discard('binary')
|
||
|
|
elif ':all:' in fmt_ctl.only_binary:
|
||
|
|
result.discard('source')
|
||
|
|
elif ':all:' in fmt_ctl.no_binary:
|
||
|
|
result.discard('binary')
|
||
|
|
return frozenset(result)
|
||
|
|
|
||
|
|
|
||
|
|
def fmt_ctl_no_binary(fmt_ctl):
|
||
|
|
fmt_ctl_handle_mutual_exclude(
|
||
|
|
':all:', fmt_ctl.no_binary, fmt_ctl.only_binary)
|
||
|
|
|
||
|
|
|
||
|
|
def fmt_ctl_no_use_wheel(fmt_ctl):
|
||
|
|
fmt_ctl_no_binary(fmt_ctl)
|
||
|
|
warnings.warn(
|
||
|
|
'--no-use-wheel is deprecated and will be removed in the future. '
|
||
|
|
' Please use --no-binary :all: instead.', RemovedInPip10Warning,
|
||
|
|
stacklevel=2)
|
||
|
|
|
||
|
|
|
||
|
|
Search = namedtuple('Search', 'supplied canonical formats')
|
||
|
|
"""Capture key aspects of a search.
|
||
|
|
|
||
|
|
:attribute supplied: The user supplied package.
|
||
|
|
:attribute canonical: The canonical package name.
|
||
|
|
:attribute formats: The formats allowed for this package. Should be a set
|
||
|
|
with 'binary' or 'source' or both in it.
|
||
|
|
"""
|