Mercurial > libervia-backend

annotate sat/tools/config.py @ 3274:430204a3cc10

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tools (common/template): new `icon_from_client` method: this method is available from template, and returns the name of the icon to use according to disco client data.
author Goffi <goffi@goffi.org>
date Mon, 18 May 2020 23:41:36 +0200
parents 60a9e47ef988
children a3639d6d9643
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #!/usr/bin/env python3
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2
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3
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4 # SAT: a jabber client
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5 # Copyright (C) 2009-2020 Jérôme Poisson (goffi@goffi.org)
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6 # Copyright (C) 2013-2016 Adrien Cossa (souliane@mailoo.org)
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7
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8 # This program is free software: you can redistribute it and/or modify
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9 # it under the terms of the GNU Affero General Public License as published by
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10 # the Free Software Foundation, either version 3 of the License, or
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11 # (at your option) any later version.
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12
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13 # This program is distributed in the hope that it will be useful,
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14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 # GNU Affero General Public License for more details.
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17
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18 # You should have received a copy of the GNU Affero General Public License
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19 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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20
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21 """ Configuration related useful methods """
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22
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23 import os
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24 import csv
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25 import json
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26 from configparser import ConfigParser, DEFAULTSECT, NoOptionError, NoSectionError
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27 from xdg import BaseDirectory
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28 from sat.core.log import getLogger
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29 from sat.core.constants import Const as C
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30 from sat.core.i18n import _
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31 from sat.core import exceptions
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32
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33 log = getLogger(__name__)
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34
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35
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36 def fixConfigOption(section, option, value, silent=True):
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37 """Force a configuration option value, writing it in the first found user
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38 config file, eventually creating a new user config file if none is found.
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39
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40 @param section (str): the config section
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41 @param option (str): the config option
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42 @param value (str): the new value
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43 @param silent (boolean): toggle logging output (must be True when called from sat.sh)
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44 """
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45 config = ConfigParser()
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46 target_file = None
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47 for file_ in C.CONFIG_FILES[::-1]:
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48 # we will eventually update the existing file with the highest priority,
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49 # if it's a user personal file...
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50 if not silent:
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51 log.debug(_("Testing file %s") % file_)
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52 if os.path.isfile(file_):
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53 if file_.startswith(os.path.expanduser("~")):
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54 config.read([file_])
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55 target_file = file_
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56 break
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57 if not target_file:
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58 # ... otherwise we create a new config file for that user
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59 target_file = BaseDirectory.save_config_path("sat") + "/sat.conf"
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60 if section and section.upper() != DEFAULTSECT and not config.has_section(section):
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61 config.add_section(section)
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62 config.set(section, option, value)
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63 with open(target_file, "wb") as configfile:
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64 config.write(configfile) # for the next time that user launches sat
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65 if not silent:
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66 if option in ("passphrase",): # list here the options storing a password
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67 value = "******"
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68 log.warning(_("Config auto-update: {option} set to {value} in the file "
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69 "{config_file}.").format(option=option, value=value,
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70 config_file=target_file))
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71
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72
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73 # XXX: tmp update code, will be removed in the future
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74 # When you remove this, please add the default value for
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75 # 'local_dir' in sat.core.constants.Const.DEFAULT_CONFIG
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76 def fixLocalDir(silent=True):
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77 """Retro-compatibility with the previous local_dir default value.
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78
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79 @param silent (boolean): toggle logging output (must be True when called from sat.sh)
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80 """
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81 user_config = ConfigParser()
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82 try:
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83 user_config.read(C.CONFIG_FILES)
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84 except:
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85 pass # file is readable but its structure if wrong
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86 try:
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87 current_value = user_config.get("DEFAULT", "local_dir")
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88 except (NoOptionError, NoSectionError):
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89 current_value = ""
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90 if current_value:
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91 return # nothing to do
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92 old_default = "~/.sat"
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93 if os.path.isfile(os.path.expanduser(old_default) + "/" + C.SAVEFILE_DATABASE):
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94 if not silent:
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95 log.warning(_(
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96 "A database has been found in the default local_dir for previous "
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97 "versions (< 0.5)"
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98 ))
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99 fixConfigOption("", "local_dir", old_default, silent)
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100
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101
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102 def parseMainConf(log_filenames=False):
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103 """Look for main .ini configuration file, and parse it
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104
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105 @param log_filenames(bool): if True, log filenames of read config files
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106 """
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107 config = ConfigParser(defaults=C.DEFAULT_CONFIG)
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108 try:
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109 filenames = config.read(C.CONFIG_FILES)
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110 except Exception as e:
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111 log.error(_("Can't read main config: {msg}").format(msg=e), exc_info=True)
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112 else:
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113 if log_filenames:
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114 log.info(
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115 _("Configuration was read from: {filenames}").format(
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116 filenames=', '.join(filenames)))
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117
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118 return config
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119
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120
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121 def getConfig(config, section, name, default=None):
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122 """Get a configuration option
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123
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124 @param config (ConfigParser): the configuration instance
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125 @param section (str): section of the config file (None or '' for DEFAULT)
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126 @param name (str): name of the option
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127 @param default: value to use if not found, or Exception to raise an exception
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128 @return (unicode, list, dict): parsed value
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129 @raise: NoOptionError if option is not present and default is Exception
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130 NoSectionError if section doesn't exists and default is Exception
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131 exceptions.ParsingError error while parsing value
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132 """
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133 if not section:
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134 section = DEFAULTSECT
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135
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136 try:
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137 value = config.get(section, name)
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138 except (NoOptionError, NoSectionError) as e:
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139 if default is Exception:
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140 raise e
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141 return default
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142
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143 if name.endswith("_path") or name.endswith("_dir"):
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144 value = os.path.expanduser(value)
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145 # thx to Brian (http://stackoverflow.com/questions/186857/splitting-a-semicolon-separated-string-to-a-dictionary-in-python/186873#186873)
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146 elif name.endswith("_list"):
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147 value = next(csv.reader(
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148 [value], delimiter=",", quotechar='"', skipinitialspace=True
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149 ))
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150 elif name.endswith("_dict"):
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151 try:
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152 value = json.loads(value)
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153 except ValueError as e:
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154 raise exceptions.ParsingError("Error while parsing data: {}".format(e))
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155 if not isinstance(value, dict):
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156 raise exceptions.ParsingError(
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157 "{name} value is not a dict: {value}".format(name=name, value=value)
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158 )
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159 elif name.endswith("_json"):
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160 try:
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161 value = json.loads(value)
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162 except ValueError as e:
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163 raise exceptions.ParsingError("Error while parsing data: {}".format(e))
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164 return value