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# archive_conf.py -- functionality common to archive-conf and dispatch-conf
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# Copyright 2003-2004 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License v2
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# $Header: /var/cvsroot/gentoo-src/portage/pym/dispatch_conf.py,v 1.3.2.3 2005/04/29 03:37:30 jstubbs Exp $
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cvs_id_string="$Id: dispatch_conf.py,v 1.3.2.3 2005/04/29 03:37:30 jstubbs Exp $"[5:-2]
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# Library by Wayne Davison <gentoo@blorf.net>, derived from code
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# written by Jeremy Wohl (http://igmus.org)
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from stat import *
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import os, sys, commands, shutil
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sys.path = ["/usr/lib/portage/pym"]+sys.path
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import portage
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RCS_BRANCH = '1.1.1'
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RCS_LOCK = 'rcs -ko -M -l'
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RCS_PUT = 'ci -t-"Archived config file." -m"dispatch-conf update."'
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RCS_GET = 'co'
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RCS_MERGE = 'rcsmerge -p -r' + RCS_BRANCH + ' %s >%s'
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DIFF3_MERGE = 'diff3 -mE %s %s %s >%s'
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def read_config(mandatory_opts):
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try:
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opts = portage.getconfig('/etc/dispatch-conf.conf')
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except:
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opts = None
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if not opts:
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print >> sys.stderr, 'dispatch-conf: Error reading /etc/dispatch-conf.conf; fatal'
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sys.exit(1)
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for key in mandatory_opts:
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if not opts.has_key(key):
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if key == "merge":
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opts["merge"] = "sdiff --suppress-common-lines --output=%s %s %s"
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else:
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print >> sys.stderr, 'dispatch-conf: Missing option "%s" in /etc/dispatch-conf.conf; fatal' % (key,)
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if not os.path.exists(opts['archive-dir']):
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os.mkdir(opts['archive-dir'])
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elif not os.path.isdir(opts['archive-dir']):
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print >> sys.stderr, 'dispatch-conf: Config archive dir [%s] must exist; fatal' % (opts['archive-dir'],)
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sys.exit(1)
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return opts
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def rcs_archive(archive, curconf, newconf, mrgconf):
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"""Archive existing config in rcs (on trunk). Then, if mrgconf is
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specified and an old branch version exists, merge the user's changes
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and the distributed changes and put the result into mrgconf. Lastly,
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if newconf was specified, leave it in the archive dir with a .dist.new
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suffix along with the last 1.1.1 branch version with a .dist suffix."""
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try:
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os.makedirs(os.path.dirname(archive))
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except:
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pass
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try:
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shutil.copy2(curconf, archive)
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except(IOError, os.error), why:
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print >> sys.stderr, 'dispatch-conf: Error copying %s to %s: %s; fatal' % \
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(curconf, archive, str(why))
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if os.path.exists(archive + ',v'):
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os.system(RCS_LOCK + ' ' + archive)
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os.system(RCS_PUT + ' ' + archive)
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ret = 0
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if newconf != '':
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os.system(RCS_GET + ' -r' + RCS_BRANCH + ' ' + archive)
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has_branch = os.path.exists(archive)
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if has_branch:
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os.rename(archive, archive + '.dist')
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try:
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shutil.copy2(newconf, archive)
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except(IOError, os.error), why:
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print >> sys.stderr, 'dispatch-conf: Error copying %s to %s: %s; fatal' % \
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(newconf, archive, str(why))
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if has_branch:
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if mrgconf != '':
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# This puts the results of the merge into mrgconf.
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ret = os.system(RCS_MERGE % (archive, mrgconf))
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mystat = os.lstat(newconf)
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os.chmod(mrgconf, mystat[ST_MODE])
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os.chown(mrgconf, mystat[ST_UID], mystat[ST_GID])
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os.rename(archive, archive + '.dist.new')
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return ret
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def file_archive(archive, curconf, newconf, mrgconf):
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"""Archive existing config to the archive-dir, bumping old versions
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out of the way into .# versions (log-rotate style). Then, if mrgconf
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was specified and there is a .dist version, merge the user's changes
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and the distributed changes and put the result into mrgconf. Lastly,
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if newconf was specified, archive it as a .dist.new version (which
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gets moved to the .dist version at the end of the processing)."""
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try:
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os.makedirs(os.path.dirname(archive))
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except:
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pass
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# Archive the current config file if it isn't already saved
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if os.path.exists(archive) \
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and len(commands.getoutput('diff -aq %s %s' % (curconf,archive))) != 0:
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suf = 1
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while suf < 9 and os.path.exists(archive + '.' + str(suf)):
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suf += 1
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while suf > 1:
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os.rename(archive + '.' + str(suf-1), archive + '.' + str(suf))
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suf -= 1
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os.rename(archive, archive + '.1')
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try:
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shutil.copy2(curconf, archive)
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except(IOError, os.error), why:
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print >> sys.stderr, 'dispatch-conf: Error copying %s to %s: %s; fatal' % \
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(curconf, archive, str(why))
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if newconf != '':
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# Save off new config file in the archive dir with .dist.new suffix
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try:
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shutil.copy2(newconf, archive + '.dist.new')
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except(IOError, os.error), why:
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print >> sys.stderr, 'dispatch-conf: Error copying %s to %s: %s; fatal' % \
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(newconf, archive + '.dist.new', str(why))
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ret = 0
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if mrgconf != '' and os.path.exists(archive + '.dist'):
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# This puts the results of the merge into mrgconf.
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ret = os.system(DIFF3_MERGE % (curconf, archive + '.dist', newconf, mrgconf))
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mystat = os.lstat(newconf)
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os.chmod(mrgconf, mystat[ST_MODE])
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os.chown(mrgconf, mystat[ST_UID], mystat[ST_GID])
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return ret
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def rcs_archive_post_process(archive):
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"""Check in the archive file with the .dist.new suffix on the branch
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and remove the one with the .dist suffix."""
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os.rename(archive + '.dist.new', archive)
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if os.path.exists(archive + '.dist'):
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# Commit the last-distributed version onto the branch.
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os.system(RCS_LOCK + RCS_BRANCH + ' ' + archive)
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os.system(RCS_PUT + ' -r' + RCS_BRANCH + ' ' + archive)
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os.unlink(archive + '.dist')
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else:
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# Forcefully commit the last-distributed version onto the branch.
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os.system(RCS_PUT + ' -f -r' + RCS_BRANCH + ' ' + archive)
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def file_archive_post_process(archive):
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"""Rename the archive file with the .dist.new suffix to a .dist suffix"""
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os.rename(archive + '.dist.new', archive + '.dist')
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