/usr/lib/python2.7/dist-packages/reportbug/checkversions.py is in python-reportbug 6.6.3+deb8u1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# checkversions.py - Find if the installed version of a package is the latest
#
# Written by Chris Lawrence <lawrencc@debian.org>
# (C) 2002-08 Chris Lawrence
# Copyright (C) 2008-2014 Sandro Tosi <morph@debian.org>
#
# This program is freely distributable per the following license:
#
## Permission to use, copy, modify, and distribute this software and its
## documentation for any purpose and without fee is hereby granted,
## provided that the above copyright notice appears in all copies and that
## both that copyright notice and this permission notice appear in
## supporting documentation.
##
## I DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
## IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL I
## BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
## DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
## WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
## ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
## SOFTWARE.
import sys
import os
import re
import urllib2
import sgmllib
import gc
import time
import utils
from urlutils import open_url
from reportbug.exceptions import (
NoNetwork,
)
# needed to parse new.822
from debian.deb822 import Deb822
from debian import debian_support
RMADISON_URL = 'http://qa.debian.org/madison.php?package=%s&text=on'
INCOMING_URL = 'http://incoming.debian.org/'
NEWQUEUE_URL = 'http://ftp-master.debian.org/new.822'
# The format is an unordered list
class BaseParser(sgmllib.SGMLParser):
def __init__(self):
sgmllib.SGMLParser.__init__(self)
self.savedata = None
# --- Formatter interface, taking care of 'savedata' mode;
# shouldn't need to be overridden
def handle_data(self, data):
if self.savedata is not None:
self.savedata = self.savedata + data
# --- Hooks to save data; shouldn't need to be overridden
def save_bgn(self):
self.savedata = ''
def save_end(self, mode=0):
data = self.savedata
self.savedata = None
if not mode and data is not None: data = ' '.join(data.split())
return data
class IncomingParser(sgmllib.SGMLParser):
def __init__(self, package, arch='i386'):
sgmllib.SGMLParser.__init__(self)
self.found = []
self.savedata = None
arch = r'(?:all|'+re.escape(arch)+')'
self.package = re.compile(re.escape(package)+r'_([^_]+)_'+arch+'.deb')
def start_a(self, attrs):
for attrib, value in attrs:
if attrib.lower() != 'href':
continue
mob = self.package.match(value)
if mob:
self.found.append(mob.group(1))
def compare_versions(current, upstream):
"""Return 1 if upstream is newer than current, -1 if current is
newer than upstream, and 0 if the same."""
if not current or not upstream: return 0
return debian_support.version_compare(upstream, current)
def later_version(a, b):
if compare_versions(a, b) > 0:
return b
return a
def get_versions_available(package, timeout, dists=None, http_proxy=None, arch='i386'):
if not dists:
dists = ('oldstable', 'stable', 'testing', 'unstable', 'experimental')
arch = utils.get_arch()
url = RMADISON_URL % package
url += '&s=' + ','.join(dists)
# select only those lines that refers to source pkg
# or to binary packages available on the current arch
url += '&a=source,all,' + arch
try:
page = open_url(url)
except NoNetwork:
return {}
except urllib2.HTTPError, x:
print >> sys.stderr, "Warning:", x
return {}
if not page:
return {}
# read the content of the page, remove spaces, empty lines
content = page.read().replace(' ', '').strip()
page.close()
versions = {}
for line in content.split('\n'):
l = line.split('|')
# skip lines not having the right number of fields
if len(l) != 4:
continue
# map suites name (returned by madison) to dist name
dist = utils.SUITES2DISTS.get(l[2], l[2])
versions[dist] = l[1]
return versions
def get_newqueue_available(package, timeout, dists=None, http_proxy=None, arch='i386'):
if dists is None:
dists = ('unstable (new queue)', )
try:
page = open_url(NEWQUEUE_URL, http_proxy, timeout)
except NoNetwork:
return {}
except urllib2.HTTPError, x:
print >> sys.stderr, "Warning:", x
return {}
if not page:
return {}
versions = {}
# iter over the entries, one paragraph at a time
for para in Deb822.iter_paragraphs(page):
if para['Source'] == package:
k = para['Distribution'] + ' (' + para['Queue'] + ')'
# in case of multiple versions, choose the bigger
versions[k] = max(para['Version'].split())
return versions
def get_incoming_version(package, timeout, http_proxy=None, arch='i386'):
try:
page = open_url(INCOMING_URL, http_proxy, timeout)
except NoNetwork:
return None
except urllib2.HTTPError, x:
print >> sys.stderr, "Warning:", x
return None
if not page:
return None
parser = IncomingParser(package, arch)
for line in page:
parser.feed(line)
parser.close()
try:
page.fp._sock.recv = None
except:
pass
page.close()
if parser.found:
found = parser.found
del parser
return reduce(later_version, found, '0')
del page
del parser
return None
def check_available(package, version, timeout, dists=None,
check_incoming=True, check_newqueue=True,
http_proxy=None, arch='i386'):
avail = {}
if check_incoming:
iv = get_incoming_version(package, timeout, http_proxy, arch)
if iv:
avail['incoming'] = iv
stuff = get_versions_available(package, timeout, dists, http_proxy, arch)
avail.update(stuff)
if check_newqueue:
srcpackage = utils.get_source_name(package)
if srcpackage is None:
srcpackage = package
stuff = get_newqueue_available(srcpackage, timeout, dists, http_proxy, arch)
avail.update(stuff)
#print gc.garbage, stuff
new = {}
newer = 0
for dist in avail:
if dist == 'incoming':
if ':' in version:
ver = version.split(':', 1)[1]
else:
ver = version
comparison = compare_versions(ver, avail[dist])
else:
comparison = compare_versions(version, avail[dist])
if comparison > 0:
new[dist] = avail[dist]
elif comparison < 0:
newer += 1
too_new = (newer and newer == len(avail))
return new, too_new
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