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114 lines
4.3 KiB
Python
Executable File
114 lines
4.3 KiB
Python
Executable File
#!/usr/bin/python
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# pull-debian-debdiff - find and download a specific version of a Debian
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# package and its immediate parent to generate a debdiff.
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#
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# Copyright (C) 2010-2011, Stefano Rivera <stefanor@ubuntu.com>
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# Inspired by a tool of the same name by Kees Cook.
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#
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# Permission to use, copy, modify, and/or distribute this software for any
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# purpose with or without fee is hereby granted, provided that the above
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# copyright notice and this permission notice appear in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
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# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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# AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
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# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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# OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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# PERFORMANCE OF THIS SOFTWARE.
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import optparse
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import sys
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import debian.debian_support
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import debian.changelog
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from devscripts.logger import Logger
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from ubuntutools.archive import DebianSourcePackage, DownloadError
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from ubuntutools.config import UDTConfig
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def previous_version(package, version, distance):
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"Given an (extracted) package, determine the version distance versions ago"
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upver = debian.debian_support.Version(version).upstream_version
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filename = '%s-%s/debian/changelog' % (package, upver)
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changelog_file = open(filename, 'r')
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changelog = debian.changelog.Changelog(changelog_file.read())
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changelog_file.close()
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seen = 0
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for entry in changelog:
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if entry.distributions == 'UNRELEASED':
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continue
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if seen == distance:
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return entry.version.full_version
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seen += 1
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return False
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def main():
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parser = optparse.OptionParser('%prog [options] <package> <version> '
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'[distance]')
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parser.add_option('-f', '--fetch',
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dest='fetch_only', default=False, action='store_true',
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help="Only fetch the source packages, don't diff.")
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parser.add_option('-d', '--debian-mirror', metavar='DEBIAN_MIRROR',
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dest='debian_mirror',
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help='Preferred Debian mirror '
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'(default: http://ftp.debian.org/debian)')
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parser.add_option('-s', '--debsec-mirror', metavar='DEBSEC_MIRROR',
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dest='debsec_mirror',
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help='Preferred Debian Security mirror '
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'(default: http://security.debian.org)')
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parser.add_option('--no-conf',
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dest='no_conf', default=False, action='store_true',
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help="Don't read config files or environment variables")
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opts, args = parser.parse_args()
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if len(args) < 2:
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parser.error('Must specify package and version')
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elif len(args) > 3:
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parser.error('Too many arguments')
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package = args[0]
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version = args[1]
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distance = int(args[2]) if len(args) > 2 else 1
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config = UDTConfig(opts.no_conf)
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if opts.debian_mirror is None:
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opts.debian_mirror = config.get_value('DEBIAN_MIRROR')
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if opts.debsec_mirror is None:
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opts.debsec_mirror = config.get_value('DEBSEC_MIRROR')
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mirrors = [opts.debsec_mirror, opts.debian_mirror]
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Logger.normal('Downloading %s %s', package, version)
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newpkg = DebianSourcePackage(package, version, mirrors=mirrors)
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try:
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newpkg.pull()
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except DownloadError, e:
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Logger.error('Failed to download: %s', str(e))
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sys.exit(1)
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newpkg.unpack()
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if opts.fetch_only:
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sys.exit(0)
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oldversion = previous_version(package, version, distance)
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if not oldversion:
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Logger.error('No previous version could be found')
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sys.exit(1)
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Logger.normal('Downloading %s %s', package, oldversion)
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oldpkg = DebianSourcePackage(package, oldversion, mirrors=mirrors)
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try:
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oldpkg.pull()
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except DownloadError, e:
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Logger.error('Failed to download: %s', str(e))
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sys.exit(1)
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oldpkg.unpack()
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print 'file://' + oldpkg.debdiff(newpkg, diffstat=True)
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if __name__ == '__main__':
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try:
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main()
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except KeyboardInterrupt:
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Logger.normal('User abort.')
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