mirror of
https://github.com/Hopiu/linkchecker.git
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ffaa1b01df
git-svn-id: https://linkchecker.svn.sourceforge.net/svnroot/linkchecker/trunk/linkchecker@485 e7d03fd6-7b0d-0410-9947-9c21f3af8025
93 lines
3.6 KiB
Python
93 lines
3.6 KiB
Python
"""Handle nntp: and news: links"""
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# Copyright (C) 2000,2001 Bastian Kleineidam
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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import re, time, sys, nntplib, urlparse, random, linkcheck
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from UrlData import ExcList,UrlData
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from debuglevels import *
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debug = linkcheck.Config.debug
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random.seed()
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ExcList.extend([nntplib.error_reply,
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nntplib.error_temp,
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nntplib.error_perm,
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nntplib.error_proto,
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EOFError,
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])
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class NntpUrlData (UrlData):
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"Url link with NNTP scheme"
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def buildUrl (self):
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# use nntp instead of news to comply with the unofficial internet
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# draft of Alfred Gilman which unifies (s)news and nntp URLs
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# note: we use this only internally (for parsing and caching)
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if self.urlName[:4].lower()=='news':
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self.url = 'nntp'+self.urlName[4:]
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else:
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self.url = self.urlName
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self.urlTuple = urlparse.urlparse(self.url)
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debug(BRING_IT_ON, self.urlTuple)
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def checkConnection (self):
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nntpserver = self.urlTuple[1] or self.config["nntpserver"]
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if not nntpserver:
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self.setWarning(linkcheck._("No NNTP server specified, skipping this URL"))
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return
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nntp = self._connectNntp(nntpserver)
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group = self.urlTuple[2]
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while group[:1]=='/':
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group = group[1:]
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if '@' in group:
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# request article
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resp,number,id = nntp.stat("<"+group+">")
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self.setInfo(linkcheck._('Articel number %s found' % number))
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else:
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# split off trailing articel span
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group = group.split('/',1)[0]
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if group:
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# request group info
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resp,count,first,last,name = nntp.group(group)
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self.setInfo(linkcheck._("Group %s has %s articles, range %s to %s") %\
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(name, count, first, last))
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else:
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# group name is the empty string
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self.setWarning(linkcheck._("No newsgroup specified in NNTP URL"))
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def _connectNntp (self, nntpserver):
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"""This is done only once per checking task. Also, the newly
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introduced error codes 504 and 505 (both inclining "Too busy, retry
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later", are caught."""
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tries = 0
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nntp = value = None
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while tries < 5:
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tries += 1
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try:
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nntp=nntplib.NNTP(nntpserver)
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except nntplib.error_perm:
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value = sys.exc_info()[1]
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if re.compile("^50[45]").search(str(value)):
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time.sleep(random.randrange(10,30))
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else:
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raise
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if nntp is None:
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raise linkcheck.error(linkcheck._("NTTP server too busy; tried more than %d times")%tries)
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if value is not None:
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self.setWarning(linkcheck._("NNTP busy: %s")%str(value))
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return nntp
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def getCacheKey (self):
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return self.url
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