src/core/locale-setup.c

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2010 Lennart Poettering
   7
   8   systemd is free software; you can redistribute it and/or modify it
   9   under the terms of the GNU Lesser General Public License as published by
  10   the Free Software Foundation; either version 2.1 of the License, or
  11   (at your option) any later version.
  12
  13   systemd is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   Lesser General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser General Public License
  19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20 ***/
  21
  22 #include <string.h>
  23 #include <stdlib.h>
  24 #include <errno.h>
  25
  26 #include "locale-setup.h"
  27 #include "util.h"
  28 #include "macro.h"
  29 #include "virt.h"
  30 #include "fileio.h"
  31 #include "strv.h"
  32 #include "env-util.h"
  33
  34 enum {
  35         /* We don't list LC_ALL here on purpose. People should be
  36          * using LANG instead. */
  37
  38         VARIABLE_LANG,
  39         VARIABLE_LANGUAGE,
  40         VARIABLE_LC_CTYPE,
  41         VARIABLE_LC_NUMERIC,
  42         VARIABLE_LC_TIME,
  43         VARIABLE_LC_COLLATE,
  44         VARIABLE_LC_MONETARY,
  45         VARIABLE_LC_MESSAGES,
  46         VARIABLE_LC_PAPER,
  47         VARIABLE_LC_NAME,
  48         VARIABLE_LC_ADDRESS,
  49         VARIABLE_LC_TELEPHONE,
  50         VARIABLE_LC_MEASUREMENT,
  51         VARIABLE_LC_IDENTIFICATION,
  52         _VARIABLE_MAX
  53 };
  54
  55 static const char * const variable_names[_VARIABLE_MAX] = {
  56         [VARIABLE_LANG] = "LANG",
  57         [VARIABLE_LANGUAGE] = "LANGUAGE",
  58         [VARIABLE_LC_CTYPE] = "LC_CTYPE",
  59         [VARIABLE_LC_NUMERIC] = "LC_NUMERIC",
  60         [VARIABLE_LC_TIME] = "LC_TIME",
  61         [VARIABLE_LC_COLLATE] = "LC_COLLATE",
  62         [VARIABLE_LC_MONETARY] = "LC_MONETARY",
  63         [VARIABLE_LC_MESSAGES] = "LC_MESSAGES",
  64         [VARIABLE_LC_PAPER] = "LC_PAPER",
  65         [VARIABLE_LC_NAME] = "LC_NAME",
  66         [VARIABLE_LC_ADDRESS] = "LC_ADDRESS",
  67         [VARIABLE_LC_TELEPHONE] = "LC_TELEPHONE",
  68         [VARIABLE_LC_MEASUREMENT] = "LC_MEASUREMENT",
  69         [VARIABLE_LC_IDENTIFICATION] = "LC_IDENTIFICATION"
  70 };
  71
  72 int locale_setup(char ***environment) {
  73         char **add;
  74         char *variables[_VARIABLE_MAX] = {};
  75         int r = 0, i;
  76
  77         if (detect_container(NULL) <= 0) {
  78                 r = parse_env_file("/proc/cmdline", WHITESPACE,
  79                                    "locale.LANG",              &variables[VARIABLE_LANG],
  80                                    "locale.LANGUAGE",          &variables[VARIABLE_LANGUAGE],
  81                                    "locale.LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
  82                                    "locale.LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
  83                                    "locale.LC_TIME",           &variables[VARIABLE_LC_TIME],
  84                                    "locale.LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
  85                                    "locale.LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
  86                                    "locale.LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
  87                                    "locale.LC_PAPER",          &variables[VARIABLE_LC_PAPER],
  88                                    "locale.LC_NAME",           &variables[VARIABLE_LC_NAME],
  89                                    "locale.LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
  90                                    "locale.LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
  91                                    "locale.LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
  92                                    "locale.LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
  93                                    NULL);
  94
  95                 if (r < 0 && r != -ENOENT)
  96                         log_warning("Failed to read /proc/cmdline: %s", strerror(-r));
  97         }
  98
  99         /* Hmm, nothing set on the kernel cmd line? Then let's
 100          * try /etc/locale.conf */
 101         if (r <= 0) {
 102                 r = parse_env_file("/etc/locale.conf", NEWLINE,
 103                                    "LANG",              &variables[VARIABLE_LANG],
 104                                    "LANGUAGE",          &variables[VARIABLE_LANGUAGE],
 105                                    "LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
 106                                    "LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
 107                                    "LC_TIME",           &variables[VARIABLE_LC_TIME],
 108                                    "LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
 109                                    "LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
 110                                    "LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
 111                                    "LC_PAPER",          &variables[VARIABLE_LC_PAPER],
 112                                    "LC_NAME",           &variables[VARIABLE_LC_NAME],
 113                                    "LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
 114                                    "LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
 115                                    "LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
 116                                    "LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
 117                                    NULL);
 118
 119                 if (r < 0 && r != -ENOENT)
 120                         log_warning("Failed to read /etc/locale.conf: %s", strerror(-r));
 121         }
 122
 123         add = NULL;
 124         for (i = 0; i < _VARIABLE_MAX; i++) {
 125                 char *s;
 126
 127                 if (!variables[i])
 128                         continue;
 129
 130                 s = strjoin(variable_names[i], "=", variables[i], NULL);
 131                 if (!s) {
 132                         r = -ENOMEM;
 133                         goto finish;
 134                 }
 135
 136                 if (strv_push(&add, s) < 0) {
 137                         free(s);
 138                         r = -ENOMEM;
 139                         goto finish;
 140                 }
 141         }
 142
 143         if (!strv_isempty(add)) {
 144                 char **e;
 145
 146                 e = strv_env_merge(2, *environment, add);
 147                 if (!e) {
 148                         r = -ENOMEM;
 149                         goto finish;
 150                 }
 151
 152                 strv_free(*environment);
 153                 *environment = e;
 154         }
 155
 156         r = 0;
 157
 158 finish:
 159         strv_free(add);
 160
 161         for (i = 0; i < _VARIABLE_MAX; i++)
 162                 free(variables[i]);
 163
 164         return r;
 165 }