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1163 lines
39 KiB
1163 lines
39 KiB
4 weeks ago
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"""PyPI and direct package downloading."""
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import sys
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import os
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import re
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import io
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import shutil
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import socket
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import base64
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import hashlib
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import itertools
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import warnings
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import configparser
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import html
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import http.client
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import urllib.parse
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import urllib.request
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import urllib.error
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from functools import wraps
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import setuptools
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from pkg_resources import (
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CHECKOUT_DIST,
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Distribution,
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BINARY_DIST,
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normalize_path,
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SOURCE_DIST,
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Environment,
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find_distributions,
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safe_name,
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safe_version,
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to_filename,
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Requirement,
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DEVELOP_DIST,
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EGG_DIST,
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parse_version,
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)
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from distutils import log
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from distutils.errors import DistutilsError
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from fnmatch import translate
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from setuptools.wheel import Wheel
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from setuptools.extern.more_itertools import unique_everseen
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EGG_FRAGMENT = re.compile(r'^egg=([-A-Za-z0-9_.+!]+)$')
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HREF = re.compile(r"""href\s*=\s*['"]?([^'"> ]+)""", re.I)
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PYPI_MD5 = re.compile(
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r'<a href="([^"#]+)">([^<]+)</a>\n\s+\(<a (?:title="MD5 hash"\n\s+)'
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r'href="[^?]+\?:action=show_md5&digest=([0-9a-f]{32})">md5</a>\)'
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)
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URL_SCHEME = re.compile('([-+.a-z0-9]{2,}):', re.I).match
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EXTENSIONS = ".tar.gz .tar.bz2 .tar .zip .tgz".split()
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__all__ = [
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'PackageIndex',
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'distros_for_url',
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'parse_bdist_wininst',
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'interpret_distro_name',
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]
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_SOCKET_TIMEOUT = 15
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_tmpl = "setuptools/{setuptools.__version__} Python-urllib/{py_major}"
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user_agent = _tmpl.format(
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py_major='{}.{}'.format(*sys.version_info), setuptools=setuptools
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)
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def parse_requirement_arg(spec):
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try:
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return Requirement.parse(spec)
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except ValueError as e:
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raise DistutilsError(
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"Not a URL, existing file, or requirement spec: %r" % (spec,)
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) from e
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def parse_bdist_wininst(name):
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"""Return (base,pyversion) or (None,None) for possible .exe name"""
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lower = name.lower()
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base, py_ver, plat = None, None, None
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if lower.endswith('.exe'):
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if lower.endswith('.win32.exe'):
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base = name[:-10]
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plat = 'win32'
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elif lower.startswith('.win32-py', -16):
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py_ver = name[-7:-4]
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base = name[:-16]
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plat = 'win32'
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elif lower.endswith('.win-amd64.exe'):
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base = name[:-14]
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plat = 'win-amd64'
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elif lower.startswith('.win-amd64-py', -20):
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py_ver = name[-7:-4]
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base = name[:-20]
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plat = 'win-amd64'
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return base, py_ver, plat
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def egg_info_for_url(url):
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parts = urllib.parse.urlparse(url)
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scheme, server, path, parameters, query, fragment = parts
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base = urllib.parse.unquote(path.split('/')[-1])
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if server == 'sourceforge.net' and base == 'download': # XXX Yuck
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base = urllib.parse.unquote(path.split('/')[-2])
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if '#' in base:
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base, fragment = base.split('#', 1)
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return base, fragment
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def distros_for_url(url, metadata=None):
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"""Yield egg or source distribution objects that might be found at a URL"""
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base, fragment = egg_info_for_url(url)
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for dist in distros_for_location(url, base, metadata):
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yield dist
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if fragment:
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match = EGG_FRAGMENT.match(fragment)
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if match:
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for dist in interpret_distro_name(
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url, match.group(1), metadata, precedence=CHECKOUT_DIST
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):
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yield dist
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def distros_for_location(location, basename, metadata=None):
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"""Yield egg or source distribution objects based on basename"""
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if basename.endswith('.egg.zip'):
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basename = basename[:-4] # strip the .zip
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if basename.endswith('.egg') and '-' in basename:
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# only one, unambiguous interpretation
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return [Distribution.from_location(location, basename, metadata)]
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if basename.endswith('.whl') and '-' in basename:
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wheel = Wheel(basename)
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if not wheel.is_compatible():
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return []
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return [
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Distribution(
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location=location,
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project_name=wheel.project_name,
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version=wheel.version,
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# Increase priority over eggs.
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precedence=EGG_DIST + 1,
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)
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]
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if basename.endswith('.exe'):
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win_base, py_ver, platform = parse_bdist_wininst(basename)
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if win_base is not None:
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return interpret_distro_name(
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location, win_base, metadata, py_ver, BINARY_DIST, platform
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)
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# Try source distro extensions (.zip, .tgz, etc.)
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#
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for ext in EXTENSIONS:
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if basename.endswith(ext):
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basename = basename[: -len(ext)]
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return interpret_distro_name(location, basename, metadata)
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return [] # no extension matched
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def distros_for_filename(filename, metadata=None):
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"""Yield possible egg or source distribution objects based on a filename"""
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return distros_for_location(
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normalize_path(filename), os.path.basename(filename), metadata
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)
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def interpret_distro_name(
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location, basename, metadata, py_version=None, precedence=SOURCE_DIST, platform=None
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):
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"""Generate the interpretation of a source distro name
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Note: if `location` is a filesystem filename, you should call
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``pkg_resources.normalize_path()`` on it before passing it to this
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routine!
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"""
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parts = basename.split('-')
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if not py_version and any(re.match(r'py\d\.\d$', p) for p in parts[2:]):
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# it is a bdist_dumb, not an sdist -- bail out
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return
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# find the pivot (p) that splits the name from the version.
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# infer the version as the first item that has a digit.
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for p in range(len(parts)):
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if parts[p][:1].isdigit():
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break
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else:
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p = len(parts)
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yield Distribution(
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location,
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metadata,
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'-'.join(parts[:p]),
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'-'.join(parts[p:]),
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py_version=py_version,
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precedence=precedence,
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platform=platform
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)
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def unique_values(func):
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"""
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Wrap a function returning an iterable such that the resulting iterable
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only ever yields unique items.
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"""
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@wraps(func)
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def wrapper(*args, **kwargs):
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return unique_everseen(func(*args, **kwargs))
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return wrapper
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REL = re.compile(r"""<([^>]*\srel\s{0,10}=\s{0,10}['"]?([^'" >]+)[^>]*)>""", re.I)
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"""
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Regex for an HTML tag with 'rel="val"' attributes.
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"""
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@unique_values
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def find_external_links(url, page):
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"""Find rel="homepage" and rel="download" links in `page`, yielding URLs"""
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for match in REL.finditer(page):
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tag, rel = match.groups()
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rels = set(map(str.strip, rel.lower().split(',')))
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if 'homepage' in rels or 'download' in rels:
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for match in HREF.finditer(tag):
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yield urllib.parse.urljoin(url, htmldecode(match.group(1)))
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for tag in ("<th>Home Page", "<th>Download URL"):
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pos = page.find(tag)
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if pos != -1:
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match = HREF.search(page, pos)
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if match:
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yield urllib.parse.urljoin(url, htmldecode(match.group(1)))
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class ContentChecker:
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"""
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A null content checker that defines the interface for checking content
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"""
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def feed(self, block):
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"""
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Feed a block of data to the hash.
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"""
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return
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def is_valid(self):
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"""
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Check the hash. Return False if validation fails.
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"""
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return True
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def report(self, reporter, template):
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"""
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Call reporter with information about the checker (hash name)
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substituted into the template.
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"""
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return
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class HashChecker(ContentChecker):
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pattern = re.compile(
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r'(?P<hash_name>sha1|sha224|sha384|sha256|sha512|md5)='
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r'(?P<expected>[a-f0-9]+)'
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)
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def __init__(self, hash_name, expected):
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self.hash_name = hash_name
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self.hash = hashlib.new(hash_name)
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self.expected = expected
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@classmethod
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def from_url(cls, url):
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"Construct a (possibly null) ContentChecker from a URL"
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fragment = urllib.parse.urlparse(url)[-1]
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if not fragment:
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return ContentChecker()
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match = cls.pattern.search(fragment)
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if not match:
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return ContentChecker()
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return cls(**match.groupdict())
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def feed(self, block):
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self.hash.update(block)
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def is_valid(self):
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return self.hash.hexdigest() == self.expected
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def report(self, reporter, template):
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msg = template % self.hash_name
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return reporter(msg)
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class PackageIndex(Environment):
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"""A distribution index that scans web pages for download URLs"""
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def __init__(
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self,
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index_url="https://pypi.org/simple/",
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hosts=('*',),
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ca_bundle=None,
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verify_ssl=True,
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*args,
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**kw
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):
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super().__init__(*args, **kw)
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self.index_url = index_url + "/"[: not index_url.endswith('/')]
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self.scanned_urls = {}
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self.fetched_urls = {}
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self.package_pages = {}
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self.allows = re.compile('|'.join(map(translate, hosts))).match
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self.to_scan = []
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self.opener = urllib.request.urlopen
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def add(self, dist):
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# ignore invalid versions
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try:
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parse_version(dist.version)
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except Exception:
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return
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return super().add(dist)
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# FIXME: 'PackageIndex.process_url' is too complex (14)
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def process_url(self, url, retrieve=False): # noqa: C901
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"""Evaluate a URL as a possible download, and maybe retrieve it"""
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if url in self.scanned_urls and not retrieve:
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return
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self.scanned_urls[url] = True
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if not URL_SCHEME(url):
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self.process_filename(url)
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return
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else:
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dists = list(distros_for_url(url))
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if dists:
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if not self.url_ok(url):
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return
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self.debug("Found link: %s", url)
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if dists or not retrieve or url in self.fetched_urls:
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list(map(self.add, dists))
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return # don't need the actual page
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if not self.url_ok(url):
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self.fetched_urls[url] = True
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return
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self.info("Reading %s", url)
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self.fetched_urls[url] = True # prevent multiple fetch attempts
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tmpl = "Download error on %s: %%s -- Some packages may not be found!"
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f = self.open_url(url, tmpl % url)
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if f is None:
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return
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if isinstance(f, urllib.error.HTTPError) and f.code == 401:
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self.info("Authentication error: %s" % f.msg)
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self.fetched_urls[f.url] = True
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if 'html' not in f.headers.get('content-type', '').lower():
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f.close() # not html, we can't process it
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return
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base = f.url # handle redirects
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page = f.read()
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if not isinstance(page, str):
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# In Python 3 and got bytes but want str.
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if isinstance(f, urllib.error.HTTPError):
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# Errors have no charset, assume latin1:
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charset = 'latin-1'
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else:
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charset = f.headers.get_param('charset') or 'latin-1'
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page = page.decode(charset, "ignore")
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f.close()
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for match in HREF.finditer(page):
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link = urllib.parse.urljoin(base, htmldecode(match.group(1)))
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self.process_url(link)
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if url.startswith(self.index_url) and getattr(f, 'code', None) != 404:
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|
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/2hrImnY 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 _scan(self, link):
|
||
|
|
# Process a URL to see if it's for a package page
|
||
|
|
NO_MATCH_SENTINEL = None, None
|
||
|
|
if not link.startswith(self.index_url):
|
||
|
|
return NO_MATCH_SENTINEL
|
||
|
|
|
||
|
|
parts = list(map(urllib.parse.unquote, link[len(self.index_url) :].split('/')))
|
||
|
|
if len(parts) != 2 or '#' in parts[1]:
|
||
|
|
return NO_MATCH_SENTINEL
|
||
|
|
|
||
|
|
# 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)
|
||
|
|
|
||
|
|
def process_index(self, url, page):
|
||
|
|
"""Process the contents of a PyPI page"""
|
||
|
|
|
||
|
|
# process an index page into the package-page index
|
||
|
|
for match in HREF.finditer(page):
|
||
|
|
try:
|
||
|
|
self._scan(urllib.parse.urljoin(url, htmldecode(match.group(1))))
|
||
|
|
except ValueError:
|
||
|
|
pass
|
||
|
|
|
||
|
|
pkg, ver = self._scan(url) # ensure this page is in the page index
|
||
|
|
if not pkg:
|
||
|
|
return "" # no sense double-scanning non-package pages
|
||
|
|
|
||
|
|
# 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: '<a href="%s#md5=%s">%s</a>' % m.group(1, 3, 2), page
|
||
|
|
)
|
||
|
|
|
||
|
|
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( # noqa: C901 # is too complex (14) # FIXME
|
||
|
|
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
|
||
|
|
|
||
|
|
test = dist in req and (dist.precedence <= SOURCE_DIST or not source)
|
||
|
|
if test:
|
||
|
|
loc = self.download(dist.location, tmpdir)
|
||
|
|
dist.download_location = loc
|
||
|
|
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)
|
||
|
|
if not (os.path.exists(dst) and os.path.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 = None
|
||
|
|
try:
|
||
|
|
checker = HashChecker.from_url(url)
|
||
|
|
fp = self.open_url(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 = headers.get_all('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
|
||
|
|
|
||
|
|
# FIXME:
|
||
|
|
def open_url(self, url, warning=None): # noqa: C901 # is too complex (12)
|
||
|
|
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)) from v
|
||
|
|
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)
|
||
|
|
) from v
|
||
|
|
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)
|
||
|
|
) from v
|
||
|
|
except (http.client.HTTPException, socket.error) as v:
|
||
|
|
if warning:
|
||
|
|
self.warn(warning, v)
|
||
|
|
else:
|
||
|
|
raise DistutilsError("Download error for %s: %s" % (url, v)) from 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'<title>([^- ]+ - )?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):
|
||
|
|
warnings.warn("SVN download support is deprecated", UserWarning)
|
||
|
|
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(
|
||
|
|
"git -C %s 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(
|
||
|
|
"hg --cwd %s up -C -r %s -q"
|
||
|
|
% (
|
||
|
|
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 decode_entity(match):
|
||
|
|
what = match.group(0)
|
||
|
|
return html.unescape(what)
|
||
|
|
|
||
|
|
|
||
|
|
def htmldecode(text):
|
||
|
|
"""
|
||
|
|
Decode HTML entities in the given text.
|
||
|
|
|
||
|
|
>>> htmldecode(
|
||
|
|
... 'https://../package_name-0.1.2.tar.gz'
|
||
|
|
... '?tokena=A&tokenb=B">package_name-0.1.2.tar.gz')
|
||
|
|
'https://../package_name-0.1.2.tar.gz?tokena=A&tokenb=B">package_name-0.1.2.tar.gz'
|
||
|
|
"""
|
||
|
|
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):
|
||
|
|
"""
|
||
|
|
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()
|
||
|
|
encoded_bytes = base64.b64encode(auth_bytes)
|
||
|
|
# convert back to a string
|
||
|
|
encoded = encoded_bytes.decode()
|
||
|
|
# strip the trailing carriage return
|
||
|
|
return encoded.replace('\n', '')
|
||
|
|
|
||
|
|
|
||
|
|
class Credential:
|
||
|
|
"""
|
||
|
|
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'], '')
|
||
|
|
super().__init__(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"""
|
||
|
|
|
||
|
|
parsed = urllib.parse.urlparse(url)
|
||
|
|
scheme, netloc, path, params, query, frag = parsed
|
||
|
|
|
||
|
|
# Double scheme does not raise on macOS 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, address = _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, address, 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 == address:
|
||
|
|
parts = s2, netloc, path2, param2, query2, frag2
|
||
|
|
fp.url = urllib.parse.urlunparse(parts)
|
||
|
|
|
||
|
|
return fp
|
||
|
|
|
||
|
|
|
||
|
|
# copy of urllib.parse._splituser from Python 3.8
|
||
|
|
def _splituser(host):
|
||
|
|
"""splituser('user[:passwd]@host[:port]')
|
||
|
|
--> 'user[:passwd]', 'host[:port]'."""
|
||
|
|
user, delim, host = host.rpartition('@')
|
||
|
|
return (user if delim else None), host
|
||
|
|
|
||
|
|
|
||
|
|
# 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}</title>" "</head><body>{files}</body></html>"
|
||
|
|
)
|
||
|
|
body = tmpl.format(url=url, files='\n'.join(files))
|
||
|
|
status, message = 200, "OK"
|
||
|
|
else:
|
||
|
|
status, message, body = 404, "Path not found", "Not found"
|
||
|
|
|
||
|
|
headers = {'content-type': 'text/html'}
|
||
|
|
body_stream = io.StringIO(body)
|
||
|
|
return urllib.error.HTTPError(url, status, message, headers, body_stream)
|