libervia-backend/sat/tools/config.py
2019-01-12 12:25:31 +01:00

128 lines
5 KiB
Python

#!/usr/bin/env python2
# -*- coding: utf-8 -*-
# SAT: a jabber client
# Copyright (C) 2009-2019 Jérôme Poisson (goffi@goffi.org)
# Copyright (C) 2013-2016 Adrien Cossa (souliane@mailoo.org)
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 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 Affero General Public License for more details.
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
""" Configuration related useful methods """
from sat.core.log import getLogger
log = getLogger(__name__)
from sat.core.constants import Const as C
from sat.core.i18n import _
from sat.core import exceptions
from ConfigParser import SafeConfigParser, DEFAULTSECT, NoOptionError, NoSectionError
from xdg import BaseDirectory
import os
import csv
import json
def fixConfigOption(section, option, value, silent=True):
"""Force a configuration option value, writing it in the first found user
config file, eventually creating a new user config file if none is found.
@param section (str): the config section
@param option (str): the config option
@param value (str): the new value
@param silent (boolean): toggle logging output (must be True when called from sat.sh)
"""
config = SafeConfigParser()
target_file = None
for file_ in C.CONFIG_FILES[::-1]:
# we will eventually update the existing file with the highest priority,
# if it's a user personal file...
if not silent:
log.debug(_(u"Testing file %s") % file_)
if os.path.isfile(file_):
if file_.startswith(os.path.expanduser("~")):
config.read([file_])
target_file = file_
break
if not target_file:
# ... otherwise we create a new config file for that user
target_file = BaseDirectory.save_config_path("sat") + "/sat.conf"
if section and section.upper() != DEFAULTSECT and not config.has_section(section):
config.add_section(section)
config.set(section, option, value)
with open(target_file, "wb") as configfile:
config.write(configfile) # for the next time that user launches sat
if not silent:
if option in ("passphrase",): # list here the options storing a password
value = "******"
log.warning(_(u"Config auto-update: {option} set to {value} in the file "
u"{config_file}.").format(option=option, value=value,
config_file=target_file))
def parseMainConf():
"""look for main .ini configuration file, and parse it"""
config = SafeConfigParser(defaults=C.DEFAULT_CONFIG)
try:
config.read(C.CONFIG_FILES)
except:
log.error(_("Can't read main config !"))
return config
def getConfig(config, section, name, default=None):
"""Get a configuration option
@param config (SafeConfigParser): the configuration instance
@param section (str): section of the config file (None or '' for DEFAULT)
@param name (str): name of the option
@param default: value to use if not found, or Exception to raise an exception
@return (unicode, list, dict): parsed value
@raise: NoOptionError if option is not present and default is Exception
NoSectionError if section doesn't exists and default is Exception
exceptions.ParsingError error while parsing value
"""
if not section:
section = DEFAULTSECT
try:
value = config.get(section, name).decode("utf-8")
except (NoOptionError, NoSectionError) as e:
if default is Exception:
raise e
return default
if name.endswith("_path") or name.endswith("_dir"):
value = os.path.expanduser(value)
# thx to Brian (http://stackoverflow.com/questions/186857/splitting-a-semicolon-separated-string-to-a-dictionary-in-python/186873#186873)
elif name.endswith("_list"):
value = csv.reader(
[value], delimiter=",", quotechar='"', skipinitialspace=True
).next()
elif name.endswith("_dict"):
try:
value = json.loads(value)
except ValueError as e:
raise exceptions.ParsingError(u"Error while parsing data: {}".format(e))
if not isinstance(value, dict):
raise exceptions.ParsingError(
u"{name} value is not a dict: {value}".format(name=name, value=value)
)
elif name.endswith("_json"):
try:
value = json.loads(value)
except ValueError as e:
raise exceptions.ParsingError(u"Error while parsing data: {}".format(e))
return value