mirror of
https://github.com/miurahr/aqtinstall.git
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79 lines
3.2 KiB
Python
79 lines
3.2 KiB
Python
#!/usr/bin/env python3
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#
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# Copyright (C) 2018 Linus Jahn <lnj@kaidan.im>
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# Copyright (C) 2019 Hiroshi Miura <miurahr@linux.com>
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy of
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# this software and associated documentation files (the "Software"), to deal in
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# the Software without restriction, including without limitation the rights to
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# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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# the Software, and to permit persons to whom the Software is furnished to do so,
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# subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in all
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# copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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# FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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# COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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# IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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import requests
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import xml.etree.ElementTree as ElementTree
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def get(url, stream=False):
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r = requests.get(url, stream=stream, allow_redirects=False)
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if r.status_code == 302:
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# tsinghua.edu.cn is problematic and it prohibit service to specific geo location.
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# we will use another redirected location for that.
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newurl = r.headers['Location']
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blacklist = ['https://mirrors.tuna.tsinghua.edu.cn', 'http://mirrors.tuna.tsinghua.edu.cn']
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for b in blacklist:
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if newurl.startswith(b):
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mml = Metalink(url)
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newurl = mml.altlink(blacklist=blacklist)
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break
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r = requests.get(newurl, stream=stream)
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return r
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class Metalink:
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'''Download .meta4 metalink version4 xml file and parse it.'''
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def __init__(self, url, candidate=None):
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self.mirrors = {}
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self.url = url
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self.candidate = candidate
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m = requests.get(url + '.meta4')
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mirror_xml = ElementTree.fromstring(m.text)
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for f in mirror_xml.iter("{urn:ietf:params:xml:ns:metalink}file"):
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for u in f.iter("{urn:ietf:params:xml:ns:metalink}url"):
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pri = u.attrib['priority']
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self.mirrors[pri] = u.text
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def altlink(self, priority=None, blacklist=None):
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if len(self.mirrors) == 0:
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# no alternative
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if self.candidate is not None:
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return self.candidate
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else:
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return self.url
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if priority is None:
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if blacklist is not None:
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for ind in range(len(self.mirrors)):
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mirror = self.mirrors[str(ind + 1)]
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if mirror in blacklist:
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continue
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return mirror
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else:
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for ind in range(len(self.mirrors)):
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mirror = self.mirrors[str(ind + 1)]
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if mirror == self.candidate:
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continue
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return mirror
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else:
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return self.mirrors[str(priority)]
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