mirror of
https://github.com/tahoe-lafs/tahoe-lafs.git
synced 2024-12-30 01:38:55 +00:00
799 lines
29 KiB
Python
799 lines
29 KiB
Python
"""PyPI and direct package downloading"""
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import sys, os.path, re, urlparse, urllib2, shutil, random, socket, cStringIO
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import httplib, urllib
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from pkg_resources import *
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from distutils import log
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from distutils.errors import DistutilsError
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try:
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from hashlib import md5
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except ImportError:
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from md5 import md5
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from fnmatch import translate
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EGG_FRAGMENT = re.compile(r'^egg=([-A-Za-z0-9_.]+)$')
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HREF = re.compile("""href\\s*=\\s*['"]?([^'"> ]+)""", re.I)
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# this is here to fix emacs' cruddy broken syntax highlighting
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PYPI_MD5 = re.compile(
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'<a href="([^"#]+)">([^<]+)</a>\n\s+\\(<a (?:title="MD5 hash"\n\s+)'
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'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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def is_local(url_or_fname):
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""" Return True if url_or_fname is a "file:" url or if it is a schemaless thing (which is presumably a filename). """
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mo = URL_SCHEME(url_or_fname)
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return not (mo and mo.group(1).lower()!='file')
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def url_or_fname_to_fname(url_or_fname):
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""" Assert that is_local(url_or_fname) then if it is a "file:" url, parse it and run url2pathname on it, else just return it. """
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assert is_local(url_or_fname)
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mo = URL_SCHEME(url_or_fname)
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if mo:
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return urllib2.url2pathname(urlparse.urlparse(url)[2])
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else:
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return url_or_fname
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__all__ = [
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'PackageIndex', 'distros_for_url', 'parse_bdist_wininst',
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'interpret_distro_name',
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]
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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 = 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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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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return base,py_ver
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def egg_info_for_url(url):
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scheme, server, path, parameters, query, fragment = urlparse.urlparse(url)
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base = urllib2.unquote(path.split('/')[-1])
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if server=='sourceforge.net' and base=='download': # XXX Yuck
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base = urllib2.unquote(path.split('/')[-2])
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if '#' in base: 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): 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('.exe'):
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win_base, py_ver = 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, "win32"
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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(location, basename, metadata,
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py_version=None, precedence=SOURCE_DIST, platform=None
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):
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"""Generate alternative interpretations 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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# Generate alternative interpretations of a source distro name
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# Because some packages are ambiguous as to name/versions split
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# e.g. "adns-python-1.1.0", "egenix-mx-commercial", etc.
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# So, we generate each possible interepretation (e.g. "adns, python-1.1.0"
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# "adns-python, 1.1.0", and "adns-python-1.1.0, no version"). In practice,
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# the spurious interpretations should be ignored, because in the event
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# there's also an "adns" package, the spurious "python-1.1.0" version will
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# compare lower than any numeric version number, and is therefore unlikely
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# to match a request for it. It's still a potential problem, though, and
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# in the long run PyPI and the distutils should go for "safe" names and
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# versions in distribution archive names (sdist and bdist).
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parts = basename.split('-')
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if not py_version:
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for i,p in enumerate(parts[2:]):
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if len(p)==5 and p.startswith('py2.'):
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return # It's a bdist_dumb, not an sdist -- bail out
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for p in range(1,len(parts)+1):
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yield Distribution(
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location, metadata, '-'.join(parts[:p]), '-'.join(parts[p:]),
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py_version=py_version, precedence = precedence,
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platform = platform
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)
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REL = re.compile("""<([^>]*\srel\s*=\s*['"]?([^'">]+)[^>]*)>""", re.I)
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# this line is here to fix emacs' cruddy broken syntax highlighting
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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 = 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 urlparse.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 urlparse.urljoin(url, htmldecode(match.group(1)))
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user_agent = "Python-urllib/%s setuptools/%s" % (
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urllib2.__version__, require('setuptools')[0].version
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)
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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__(self, index_url="http://pypi.python.org/simple", hosts=('*',),
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*args, **kw
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):
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Environment.__init__(self,*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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def process_url(self, url, retrieve=False):
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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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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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f = self.open_url(url, "Download error: %s -- Some packages may not be found!")
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if f is None: return
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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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f.close()
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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)
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for match in HREF.finditer(page):
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link = urlparse.urljoin(base, htmldecode(match.group(1)))
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self.process_url(link)
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def process_filename(self, fn, nested=False):
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# process filenames or directories
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if not os.path.exists(fn):
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self.warn("Not found: %s", fn)
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return
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if os.path.isdir(fn) and not nested:
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path = os.path.realpath(fn)
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for item in os.listdir(path):
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self.process_filename(os.path.join(path,item), True)
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dists = distros_for_filename(fn)
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if dists:
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self.debug("Found: %s", fn)
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map(self.add, dists)
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def url_ok(self, url, fatal=False):
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s = URL_SCHEME(url)
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if (s and s.group(1).lower()=='file') or self.allows(urlparse.urlparse(url)[1]):
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return True
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msg = "\nLink to % s ***BLOCKED*** by --allow-hosts\n"
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if fatal:
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raise DistutilsError(msg % url)
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else:
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self.warn(msg, url)
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def scan_egg_links(self, search_path):
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for item in search_path:
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if os.path.isdir(item):
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for entry in os.listdir(item):
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if entry.endswith('.egg-link'):
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self.scan_egg_link(item, entry)
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def scan_egg_link(self, path, entry):
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lines = filter(None, map(str.strip, file(os.path.join(path, entry))))
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if len(lines)==2:
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for dist in find_distributions(os.path.join(path, lines[0])):
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dist.location = os.path.join(path, *lines)
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dist.precedence = SOURCE_DIST
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self.add(dist)
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def process_index(self,url,page):
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"""Process the contents of a PyPI page"""
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def scan(link):
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# Process a URL to see if it's for a package page
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if link.startswith(self.index_url):
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parts = map(
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urllib2.unquote, link[len(self.index_url):].split('/')
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)
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if len(parts)==2 and '#' not in parts[1]:
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# it's a package page, sanitize and index it
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pkg = safe_name(parts[0])
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ver = safe_version(parts[1])
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self.package_pages.setdefault(pkg.lower(),{})[link] = True
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return to_filename(pkg), to_filename(ver)
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return None, None
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# process an index page into the package-page index
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for match in HREF.finditer(page):
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scan( urlparse.urljoin(url, htmldecode(match.group(1))) )
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pkg, ver = scan(url) # ensure this page is in the page index
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if pkg:
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# process individual package page
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for new_url in find_external_links(url, page):
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# Process the found URL
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base, frag = egg_info_for_url(new_url)
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if base.endswith('.py') and not frag:
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if ver:
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new_url+='#egg=%s-%s' % (pkg,ver)
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else:
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self.need_version_info(url)
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self.scan_url(new_url)
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return PYPI_MD5.sub(
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lambda m: '<a href="%s#md5=%s">%s</a>' % m.group(1,3,2), page
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)
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else:
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return "" # no sense double-scanning non-package pages
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def need_version_info(self, url):
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self.scan_all(
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"Page at %s links to .py file(s) without version info; an index "
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"scan is required.", url
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)
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def scan_all(self, msg=None, *args):
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if self.index_url not in self.fetched_urls:
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if msg: self.warn(msg,*args)
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self.info(
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"Scanning index of all packages (this may take a while)"
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)
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self.scan_url(self.index_url)
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def find_packages(self, requirement):
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self.scan_url(self.index_url + requirement.unsafe_name+'/')
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if not self.package_pages.get(requirement.key):
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# Fall back to safe version of the name
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self.scan_url(self.index_url + requirement.project_name+'/')
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if not self.package_pages.get(requirement.key):
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# We couldn't find the target package, so search the index page too
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self.not_found_in_index(requirement)
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for url in list(self.package_pages.get(requirement.key,())):
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# scan each page that might be related to the desired package
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self.scan_url(url)
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def obtain(self, requirement, installer=None):
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self.prescan(); self.find_packages(requirement)
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for dist in self[requirement.key]:
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if dist in requirement:
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return dist
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self.debug("%s does not match %s", requirement, dist)
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return super(PackageIndex, self).obtain(requirement,installer)
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def check_md5(self, cs, info, filename, tfp):
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if re.match('md5=[0-9a-f]{32}$', info):
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self.debug("Validating md5 checksum for %s", filename)
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if cs.hexdigest()!=info[4:]:
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tfp.close()
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os.unlink(filename)
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raise DistutilsError(
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"MD5 validation failed for "+os.path.basename(filename)+
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"; possible download problem?"
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)
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def add_find_links(self, urls):
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"""Add `urls` to the list that will be prescanned for searches"""
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for url in urls:
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if (
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self.to_scan is None # if we have already "gone online"
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or not URL_SCHEME(url) # or it's a local file/directory
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or url.startswith('file:')
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or list(distros_for_url(url)) # or a direct package link
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):
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# then go ahead and process it now
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self.scan_url(url)
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else:
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# otherwise, defer retrieval till later
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self.to_scan.append(url)
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def prescan(self):
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"""Scan urls scheduled for prescanning (e.g. --find-links)"""
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if self.to_scan:
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map(self.scan_url, self.to_scan)
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self.to_scan = None # from now on, go ahead and process immediately
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def not_found_in_index(self, requirement):
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if self[requirement.key]: # we've seen at least one distro
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meth, msg = self.info, "Couldn't retrieve index page for %r"
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else: # no distros seen for this name, might be misspelled
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meth, msg = (self.warn,
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"Couldn't find index page for %r (maybe misspelled?)")
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meth(msg, requirement.unsafe_name)
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self.scan_all()
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def download(self, spec, tmpdir):
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"""Locate and/or download `spec` to `tmpdir`, returning a local path
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`spec` may be a ``Requirement`` object, or a string containing a URL,
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an existing local filename, or a project/version requirement spec
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(i.e. the string form of a ``Requirement`` object). If it is the URL
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of a .py file with an unambiguous ``#egg=name-version`` tag (i.e., one
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that escapes ``-`` as ``_`` throughout), a trivial ``setup.py`` is
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automatically created alongside the downloaded file.
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If `spec` is a ``Requirement`` object or a string containing a
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project/version requirement spec, this method returns the location of
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a matching distribution (possibly after downloading it to `tmpdir`).
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If `spec` is a locally existing file or directory name, it is simply
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returned unchanged. If `spec` is a URL, it is downloaded to a subpath
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of `tmpdir`, and the local filename is returned. Various errors may be
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raised if a problem occurs during downloading.
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"""
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if not isinstance(spec,Requirement):
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scheme = URL_SCHEME(spec)
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if scheme:
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# It's a url, download it to tmpdir
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found = self._download_url(scheme.group(1), spec, tmpdir)
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base, fragment = egg_info_for_url(spec)
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if base.endswith('.py'):
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found = self.gen_setup(found,fragment,tmpdir)
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return found
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elif os.path.exists(spec):
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# Existing file or directory, just return it
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return spec
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else:
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try:
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spec = Requirement.parse(spec)
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except ValueError:
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raise DistutilsError(
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"Not a URL, existing file, or requirement spec: %r" %
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(spec,)
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)
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return getattr(self.fetch_distribution(spec, tmpdir),'location',None)
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|
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def fetch_distribution(self,
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requirement, tmpdir, force_scan=False, source=False, develop_ok=False,
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local_index=None,
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):
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"""Obtain a distribution suitable for fulfilling `requirement`
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`requirement` must be a ``pkg_resources.Requirement`` instance.
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If necessary, or if the `force_scan` flag is set, the requirement is
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searched for in the (online) package index as well as the locally
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installed packages. If a distribution matching `requirement` is found,
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the returned distribution's ``location`` is the value you would have
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gotten from calling the ``download()`` method with the matching
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distribution's URL or filename. If no matching distribution is found,
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``None`` is returned.
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If the `source` flag is set, only source distributions and source
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checkout links will be considered. Unless the `develop_ok` flag is
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set, development and system eggs (i.e., those using the ``.egg-info``
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format) will be ignored.
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"""
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# process a Requirement
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self.info("Searching for %s", requirement)
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skipped = {}
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dist = None
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def find(env, req):
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# Find a matching distribution; may be called more than once
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# first try to find a local dist
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for allow_remote in (False, True):
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# then try to find a platform-dependent dist
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|
for allow_platform_independent in (False, True):
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for dist in env[req.key]:
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if dist.precedence==DEVELOP_DIST and not develop_ok:
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|
if dist not in skipped:
|
|
self.warn("Skipping development or system egg: %s",dist)
|
|
skipped[dist] = 1
|
|
continue
|
|
|
|
if ((is_local(dist.location) or allow_remote) and
|
|
(dist in req) and
|
|
((allow_platform_independent or dist.platform is not None) and
|
|
(dist.precedence<=SOURCE_DIST or not source))):
|
|
return dist
|
|
|
|
if force_scan:
|
|
self.prescan()
|
|
self.find_packages(requirement)
|
|
dist = find(self, requirement)
|
|
|
|
if local_index is not None:
|
|
dist = dist or find(local_index, requirement)
|
|
|
|
if dist is None and self.to_scan is not None:
|
|
self.prescan()
|
|
dist = find(self, requirement)
|
|
|
|
if dist is None and not force_scan:
|
|
self.find_packages(requirement)
|
|
dist = find(self, requirement)
|
|
|
|
if dist is None:
|
|
self.warn(
|
|
"No local packages or 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=self.download(dist.location, tmpdir))
|
|
|
|
|
|
def fetch(self, requirement, tmpdir, force_scan=False, source=False):
|
|
"""Obtain a file suitable for fulfilling `requirement`
|
|
|
|
DEPRECATED; use the ``fetch_distribution()`` method now instead. For
|
|
backward compatibility, this routine is identical but returns the
|
|
``location`` of the downloaded distribution instead of a distribution
|
|
object.
|
|
"""
|
|
dist = self.fetch_distribution(requirement,tmpdir,force_scan,source)
|
|
if dist is not None:
|
|
return dist.location
|
|
return None
|
|
|
|
|
|
def gen_setup(self, filename, fragment, tmpdir):
|
|
match = EGG_FRAGMENT.match(fragment)
|
|
dists = match and [d for d in
|
|
interpret_distro_name(filename, match.group(1), None) if d.version
|
|
] or []
|
|
|
|
if len(dists)==1: # unambiguous ``#egg`` fragment
|
|
basename = os.path.basename(filename)
|
|
|
|
# Make sure the file has been downloaded to the temp dir.
|
|
if os.path.dirname(filename) != tmpdir:
|
|
dst = os.path.join(tmpdir, basename)
|
|
from setuptools.command.easy_install import samefile
|
|
if not samefile(filename, dst):
|
|
shutil.copy2(filename, dst)
|
|
filename=dst
|
|
|
|
file = open(os.path.join(tmpdir, 'setup.py'), 'w')
|
|
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]
|
|
)
|
|
)
|
|
file.close()
|
|
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, tfp, info = None, None, None
|
|
try:
|
|
if '#' in url:
|
|
url, info = url.split('#', 1)
|
|
fp = self.open_url(url)
|
|
if isinstance(fp, urllib2.HTTPError):
|
|
raise DistutilsError(
|
|
"Can't download %s: %s %s" % (url, fp.code,fp.msg)
|
|
)
|
|
cs = md5()
|
|
headers = fp.info()
|
|
blocknum = 0
|
|
bs = self.dl_blocksize
|
|
size = -1
|
|
if "content-length" in headers:
|
|
size = int(headers["Content-Length"])
|
|
self.reporthook(url, filename, blocknum, bs, size)
|
|
tfp = open(filename,'wb')
|
|
while True:
|
|
block = fp.read(bs)
|
|
if block:
|
|
cs.update(block)
|
|
tfp.write(block)
|
|
blocknum += 1
|
|
self.reporthook(url, filename, blocknum, bs, size)
|
|
else:
|
|
break
|
|
if info: self.check_md5(cs, info, filename, tfp)
|
|
return headers
|
|
finally:
|
|
if fp: fp.close()
|
|
if tfp: tfp.close()
|
|
|
|
def reporthook(self, url, filename, blocknum, blksize, size):
|
|
pass # no-op
|
|
|
|
|
|
def open_url(self, url, warning=None):
|
|
if url.startswith('file:'): return local_open(url)
|
|
try:
|
|
return open_with_auth(url)
|
|
except urllib2.HTTPError, v:
|
|
return v
|
|
except urllib2.URLError, v:
|
|
reason = v.reason
|
|
except httplib.HTTPException, v:
|
|
reason = "%s: %s" % (v.__doc__ or v.__class__.__name__, v)
|
|
if warning:
|
|
self.warn(warning, reason)
|
|
else:
|
|
raise DistutilsError("Download error for %s: %s" % (url, reason))
|
|
|
|
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=='file':
|
|
return urllib2.url2pathname(urlparse.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):
|
|
url = url.split('#',1)[0] # remove any fragment for svn's sake
|
|
self.info("Doing subversion checkout from %s to %s", url, filename)
|
|
os.system("svn checkout -q %s %s" % (url, filename))
|
|
return filename
|
|
|
|
def debug(self, msg, *args):
|
|
log.debug(msg, *args)
|
|
|
|
def info(self, msg, *args):
|
|
log.info(msg, *args)
|
|
|
|
def warn(self, msg, *args):
|
|
log.warn(msg, *args)
|
|
|
|
# This pattern matches a character entity reference (a decimal numeric
|
|
# references, a hexadecimal numeric reference, or a named reference).
|
|
entity_sub = re.compile(r'&(#(\d+|x[\da-fA-F]+)|[\w.:-]+);?').sub
|
|
|
|
def uchr(c):
|
|
if not isinstance(c, int):
|
|
return c
|
|
if c>255: return unichr(c)
|
|
return chr(c)
|
|
|
|
def decode_entity(match):
|
|
what = match.group(1)
|
|
if what.startswith('#x'):
|
|
what = int(what[2:], 16)
|
|
elif what.startswith('#'):
|
|
what = int(what[1:])
|
|
else:
|
|
from htmlentitydefs import name2codepoint
|
|
what = name2codepoint.get(what, match.group(0))
|
|
return uchr(what)
|
|
|
|
def htmldecode(text):
|
|
"""Decode HTML entities in the given text."""
|
|
return entity_sub(decode_entity, text)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
def open_with_auth(url):
|
|
"""Open a urllib2 request, handling HTTP authentication"""
|
|
|
|
scheme, netloc, path, params, query, frag = urlparse.urlparse(url)
|
|
|
|
if scheme in ('http', 'https'):
|
|
auth, host = urllib.splituser(netloc)
|
|
else:
|
|
auth = None
|
|
|
|
if auth:
|
|
auth = "Basic " + urllib2.unquote(auth).encode('base64').strip()
|
|
new_url = urlparse.urlunparse((scheme,host,path,params,query,frag))
|
|
request = urllib2.Request(new_url)
|
|
request.add_header("Authorization", auth)
|
|
else:
|
|
request = urllib2.Request(url)
|
|
|
|
request.add_header('User-Agent', user_agent)
|
|
fp = urllib2.urlopen(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 = urlparse.urlparse(fp.url)
|
|
if s2==scheme and h2==host:
|
|
fp.url = urlparse.urlunparse((s2,netloc,path2,param2,query2,frag2))
|
|
|
|
return fp
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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 = urlparse.urlparse(url)
|
|
filename = urllib2.url2pathname(path)
|
|
if os.path.isfile(filename):
|
|
return urllib2.urlopen(url)
|
|
elif path.endswith('/') and os.path.isdir(filename):
|
|
files = []
|
|
for f in os.listdir(filename):
|
|
if f=='index.html':
|
|
body = open(os.path.join(filename,f),'rb').read()
|
|
break
|
|
elif os.path.isdir(os.path.join(filename,f)):
|
|
f+='/'
|
|
files.append("<a href=%r>%s</a>" % (f,f))
|
|
else:
|
|
body = ("<html><head><title>%s</title>" % url) + \
|
|
"</head><body>%s</body></html>" % '\n'.join(files)
|
|
status, message = 200, "OK"
|
|
else:
|
|
status, message, body = 404, "Path not found", "Not found"
|
|
|
|
return urllib2.HTTPError(url, status, message,
|
|
{'content-type':'text/html'}, cStringIO.StringIO(body))
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
# this line is a kludge to keep the trailing blank lines for pje's editor
|