/usr/bin/apt-listchanges is in apt-listchanges 2.85.13+nmu1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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#vim:set fileencoding=utf-8:
#
# apt-listchanges - Show changelog entries between the installed versions
# of a set of packages and the versions contained in
# corresponding .deb files
#
# Copyright (C) 2000-2006 Matt Zimmerman <mdz@debian.org>
# Copyright (C) 2006 Pierre Habouzit <madcoder@debian.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public
# License along with this program; if not, write to the Free
# Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
# MA 02111-1307 USA
#
import sys, os, os.path
import apt_pkg
import anydbm
import commands
sys.path += [os.path.dirname(sys.argv[0]) + '/apt-listchanges', '/usr/share/apt-listchanges']
from ALChacks import *
import apt_listchanges, DebianFiles, ALCConfig
def main():
config = ALCConfig.ALCConfig()
config.read('/etc/apt/listchanges.conf')
debs = config.getopt(sys.argv)
if (debs == None or len(debs) == 0) and not config.apt_mode:
config.usage(1);
apt_pkg.init_system()
if config.apt_mode:
# stdin is a pipe
debs = apt_listchanges.read_apt_pipeline(config)
if config.debug:
sys.stderr.write("To list:\n")
for d in debs: sys.stderr.write("\t%s\n" % d)
sys.stderr.write("\n")
try:
# Give any forked processes (eg. lynx) a normal stdin;
# See Debian Bug #343423
tty = open('/dev/tty', 'r+')
os.close(0)
os.dup2(tty.fileno(), 0)
tty.close()
except:
pass
if config.frontend == 'none':
sys.exit(0)
# If apt is in quiet (loggable) mode, we should make our output
# loggable too
if config.quiet == 1:
config.frontend = 'text'
elif config.quiet >= 2:
config.frontend = 'mail'
if not config.show_all:
status = DebianFiles.ControlParser()
status.readfile('/var/lib/dpkg/status')
status.makeindex('Package')
if config.save_seen:
try:
seen = anydbm.open(config.save_seen, 'c')
seen.has_key('foo%0')
except:
sys.stderr.write(_("database %s failed to load.\n") % config.save_seen)
sys.exit(1)
# Will replace seen after changes have actually been seen
seen_new = {}
all_news = {}
all_changelogs = {}
all_binnmus = {}
notes = []
# Mapping of source->binary packages
source_packages = {}
# Flag for each source package, only set if changelogs were actually found
found = {}
frontend = apt_listchanges.make_frontend(config.frontend, len(debs), config)
if frontend == None:
sys.stderr.write(_("Unknown frontend: %s\n") % config.frontend)
sys.exit(1)
# Main loop
for deb in debs:
pkg = DebianFiles.Package(deb)
binpackage = pkg.binary
srcpackage = pkg.source
srcversion = pkg.Version # XXX take the real version or we'll lose binNMUs
frontend.update_progress()
# Show changes later than fromversion
fromversion = None
if not config.show_all:
if config.save_seen and seen.has_key(srcpackage):
fromversion = seen[srcpackage]
elif config.since:
fromversion = config.since
else:
statusentry = status.find('Package', binpackage)
if statusentry and statusentry.installed():
fromversion = statusentry.version()
else:
# Package not installed or seen
notes.append(_("%s: will be newly installed") % binpackage)
continue
source_packages.setdefault(srcpackage, []).append(binpackage)
# For packages with non uniform binary versions wrt the source
# version, the version reported for the binary package is the source
# one, which lacks binNMU.
#
# This is why even if we've seen a package we may miss bits of
# changelog in some odd cases
if found.has_key(srcpackage) and \
apt_pkg.version_compare(srcversion, found[srcpackage]) <= 0:
continue
if not config.show_all and apt_pkg.version_compare(fromversion, srcversion) >= 0:
notes.append(_("%s: Version %s has already been seen") % (binpackage,
srcversion))
continue
(news, changelog, binnmu) = pkg.extract_changes(config.which, fromversion, config.reverse)
if news or changelog:
found[srcpackage] = srcversion
if news:
all_news[srcpackage] = news
if changelog:
all_changelogs[srcpackage] = changelog
if binnmu:
all_binnmus[srcpackage] = binnmu
if config.save_seen:
seen_new[srcpackage] = srcversion
frontend.progress_done()
if config.save_seen:
seen.close()
all_news = all_news.values()
all_changelogs = all_changelogs.values()
all_binnmus = all_binnmus.values()
for batch in (all_news, all_changelogs, all_binnmus):
batch.sort(lambda a, b: -cmp(a.urgency, b.urgency) or
cmp(a.package, b.package))
# FIXME: two headers with -h
all_changelogs = all_binnmus + all_changelogs
if config.headers:
changes = ''
news = ''
for rec in all_news:
if not rec.changes:
continue
package = rec.package
header = _('News for %s') % package
if len(filter(lambda x: x != package, source_packages[package])) > 0:
# Differing source and binary packages
header += ' (' + ' '.join(source_packages[package]) + ')'
news += '--- ' + header + ' ---\n' + rec.changes
for rec in all_changelogs:
if not rec.changes:
continue
package = rec.package
header = _('Changes for %s') % package
if len(filter(lambda x: x != package, source_packages[package])) > 0:
# Differing source and binary packages
header += ' (' + ' '.join(source_packages[package]) + ')'
changes += '--- ' + header + ' ---\n' + rec.changes
else:
news = ''.join([x.changes for x in all_news if x.changes])
changes = ''.join([x.changes for x in all_changelogs if x.changes])
if config.verbose and len(notes) > 0:
changes += _("Informational notes") + ":\n\n" + '\n'.join(notes)
if news:
frontend.set_title( _('apt-listchanges: News') )
frontend.display_output(news)
if changes:
frontend.set_title( _('apt-listchanges: Changelogs') )
frontend.display_output(changes)
if news or changes:
if config.confirm:
ans = frontend.confirm()
if not ans:
sys.stderr.write(_('Aborting')+'.\n')
sys.exit(10)
elif ans < 0:
sys.stderr.write(_("Confirmation failed, don't save seen state")+'.\n')
sys.exit(0)
hostname = commands.getoutput('hostname')
if config.email_address and os.path.exists("/usr/sbin/sendmail"):
if changes:
subject = _("apt-listchanges: changelogs for %s") % hostname
apt_listchanges.mail_changes(config.email_address, changes, subject)
if news:
subject = _("apt-listchanges: news for %s") % hostname
apt_listchanges.mail_changes(config.email_address, news, subject)
# Write out seen db
if config.save_seen:
seen = anydbm.open(config.save_seen, 'c')
for (key, value) in seen_new.items():
seen[key] = value
seen.close()
elif not config.apt_mode and not source_packages.keys():
sys.stderr.write("apt-listchanges: "
+ _("didn't find any valid .deb archives") + "\n")
sys.exit(1)
if __name__ == '__main__':
try:
main()
except KeyboardInterrupt:
sys.exit(10)
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