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#! /usr/bin/python
# -*- coding: utf-8 -*-
#
# © 2005 Josselin Mouette <joss@debian.org>
# Licensed under the GNU LGPL, see /usr/share/common-licenses/LGPL-2.1
treefile = '%gconf-tree.xml'
import os,tempfile,shutil,sys
from optparse import OptionParser
import re
parser = OptionParser()
parser.add_option("--source", dest="source_dir", default="/usr/share/gconf/defaults",
help="directory where to find the defaults", metavar="DIR")
parser.add_option("--destination", dest="dest_dir", default="/var/lib/gconf/debian.defaults",
help="directory where to build the GConf tree", metavar="DIR")
parser.add_option("--mandatory", action="store_true", default=False, dest="mandatory",
help="select mandatory settings directories")
parser.add_option("--no-signal", action="store_false", default=True, dest="signal",
help="do not send SIGHUP the running gconfd-2 processes")
parser.add_option("--only-if-changed", action="store_true", default=False, dest="ifchanged",
help="only regenerate configuration if needed")
(options, args) = parser.parse_args()
if 'DPKG_RUNNING_VERSION' in os.environ and options.signal:
# This is what happens when we are called in an obsolete postinst/prerm script
# Do nothing, it will be done in the trigger
sys.exit(0)
if options.mandatory:
options.source_dir="/usr/share/gconf/mandatory"
options.dest_dir="/var/lib/gconf/debian.mandatory"
if not os.path.isdir(options.source_dir):
parser.error("Source directory does not exist.")
if not os.path.isdir(options.dest_dir):
parser.error("Destination directory does not exist.")
if not os.access(options.source_dir,os.R_OK|os.X_OK):
parser.error("Source directory is not readable.")
if not os.access(options.dest_dir,os.W_OK|os.X_OK):
parser.error("Destination directory is not writable.")
save_stdout=os.dup(1)
os.close(1)
def cleanup():
os.dup2(save_stdout,1)
os.close(save_stdout)
shutil.rmtree(tmp_dir)
def htmlescape(str):
return str.replace('&','&').replace('>','>').replace('<','<').replace('"','"')
def int_entry(value):
return ' <int>' + value + '</int>\n'
def bool_entry(value):
return ' <bool>' + value + '</bool>\n'
def float_entry(value):
return ' <float>' + value + '</float>\n'
def string_entry(value):
return ' <string>' + htmlescape(value) + '</string>\n'
def int_list_entry(value):
ret = ' <list type="int">\n'
for v in value[1:-1].split(','):
ret += ' <value><int>' + v + '</int></value>\n'
ret += ' </list>\n'
return ret
def list_entry(value):
if is_int_list(value):
return int_list_entry(value)
ret = ' <list type="string">\n'
for v in value[1:-1].split(','):
ret += ' <value><string>' + htmlescape(v) + '</string></value>\n'
ret += ' </list>\n'
return ret
def is_int_list(value):
if re.search('^\[(?:\d+,?)+\]$', value) == None:
return False
else:
return True
def listcmp(a,b):
"""Number of starting similar elements in a and b"""
m = min(len(a),len(b))
for i in range(m):
if a[i] != b[i]:
return i
return m
def apply_entries(filename):
env=os.environ.copy()
env['HOME'] = tmp_home
res=os.spawnvpe(os.P_WAIT,'gconftool-2',
['gconftool-2','--direct','--config-source',
'xml:merged:'+tmp_gconf,'--load',filename],
env)
if res:
cleanup()
sys.exit(res)
gconf_val = {}
def write_and_apply_entries(filename):
out=file(filename,'w')
out.write('<gconfentryfile>\n<entrylist base="/">\n')
for key in gconf_val:
out.write('<entry>\n<key>' + key + '</key>\n<value>\n')
# write the current entry
value = gconf_val[key]
if value[0] == '"' and value[-1] == '"':
out.write(string_entry(value[1:-1]))
elif value in ['true','false']:
out.write(bool_entry(value))
elif value[0] == '[' and value[-1] == ']':
out.write(list_entry(value))
elif value.isdigit():
out.write(int_entry(value))
else:
try:
float(value)
out.write(float_entry(value))
except ValueError:
out.write(string_entry(value))
out.write('</value>\n</entry>\n')
out.write('</entrylist>\n</gconfentryfile>\n')
out.close()
apply_entries(filename)
def read_entries(filename):
for line in file(filename):
l = line.rstrip('\n').split(None,1)
if len(l) == 2 and not l[0].startswith('#'):
gconf_val[l[0]] = l[1]
defaults_files = []
for f in os.listdir(options.source_dir):
for ext in ['.dpkg-tmp', '.bak', '.tmp', '~', '.sav', '.save']:
if f.endswith(ext):
break
else:
if os.path.exists(os.path.join(options.source_dir, f)):
defaults_files.append(f)
defaults_files.sort()
if options.ifchanged:
source_stamp = os.stat(options.source_dir).st_mtime
for f in defaults_files:
realname=os.path.join(options.source_dir,f)
source_stamp = max(os.stat(realname).st_mtime,source_stamp)
try:
dest_stamp = os.stat(os.path.join(options.dest_dir, treefile)).st_mtime
except OSError:
dest_stamp = 0
if source_stamp < dest_stamp:
sys.exit(0)
tmp_dir=tempfile.mkdtemp(prefix="gconf-")
tmp_home=tmp_dir+'/home'
tmp_gconf=tmp_dir+'/gconf'
tmp_file=tmp_dir+'/temp.entries'
for f in defaults_files:
realname=os.path.join(options.source_dir,f)
if f.endswith('.entries'):
if gconf_val:
write_and_apply_entries(tmp_file)
gconf_val={}
apply_entries(realname)
else:
read_entries(realname)
if gconf_val:
write_and_apply_entries(tmp_file)
try:
shutil.copyfile(tmp_gconf+'/'+treefile,options.dest_dir+'/'+treefile+'.tmp')
os.rename(options.dest_dir+'/'+treefile+'.tmp',options.dest_dir+'/'+treefile)
except IOError:
# No %gconf-tree.xml file was created.
try:
os.remove(options.dest_dir+'/'+treefile)
except OSError:
# No existing file
pass
cleanup()
if options.signal:
os.system('kill -s HUP `pidof gconfd-2` >/dev/null 2>&1')
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