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
  31 enum {
  32         /* We don't list LC_ALL here on purpose. People should be
  33          * using LANG instead. */
  34
  35         VARIABLE_LANG,
  36         VARIABLE_LANGUAGE,
  37         VARIABLE_LC_CTYPE,
  38         VARIABLE_LC_NUMERIC,
  39         VARIABLE_LC_TIME,
  40         VARIABLE_LC_COLLATE,
  41         VARIABLE_LC_MONETARY,
  42         VARIABLE_LC_MESSAGES,
  43         VARIABLE_LC_PAPER,
  44         VARIABLE_LC_NAME,
  45         VARIABLE_LC_ADDRESS,
  46         VARIABLE_LC_TELEPHONE,
  47         VARIABLE_LC_MEASUREMENT,
  48         VARIABLE_LC_IDENTIFICATION,
  49         _VARIABLE_MAX
  50 };
  51
  52 static const char * const variable_names[_VARIABLE_MAX] = {
  53         [VARIABLE_LANG] = "LANG",
  54         [VARIABLE_LANGUAGE] = "LANGUAGE",
  55         [VARIABLE_LC_CTYPE] = "LC_CTYPE",
  56         [VARIABLE_LC_NUMERIC] = "LC_NUMERIC",
  57         [VARIABLE_LC_TIME] = "LC_TIME",
  58         [VARIABLE_LC_COLLATE] = "LC_COLLATE",
  59         [VARIABLE_LC_MONETARY] = "LC_MONETARY",
  60         [VARIABLE_LC_MESSAGES] = "LC_MESSAGES",
  61         [VARIABLE_LC_PAPER] = "LC_PAPER",
  62         [VARIABLE_LC_NAME] = "LC_NAME",
  63         [VARIABLE_LC_ADDRESS] = "LC_ADDRESS",
  64         [VARIABLE_LC_TELEPHONE] = "LC_TELEPHONE",
  65         [VARIABLE_LC_MEASUREMENT] = "LC_MEASUREMENT",
  66         [VARIABLE_LC_IDENTIFICATION] = "LC_IDENTIFICATION"
  67 };
  68
  69 int locale_setup(void) {
  70         char *variables[_VARIABLE_MAX];
  71         int r = 0, i;
  72
  73         zero(variables);
  74
  75         if (detect_container(NULL) <= 0) {
  76                 r = parse_env_file("/proc/cmdline", WHITESPACE,
  77 #if defined(TARGET_FEDORA)
  78                                    "LANG",                     &variables[VARIABLE_LANG],
  79 #endif
  80                                    "locale.LANG",              &variables[VARIABLE_LANG],
  81                                    "locale.LANGUAGE",          &variables[VARIABLE_LANGUAGE],
  82                                    "locale.LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
  83                                    "locale.LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
  84                                    "locale.LC_TIME",           &variables[VARIABLE_LC_TIME],
  85                                    "locale.LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
  86                                    "locale.LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
  87                                    "locale.LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
  88                                    "locale.LC_PAPER",          &variables[VARIABLE_LC_PAPER],
  89                                    "locale.LC_NAME",           &variables[VARIABLE_LC_NAME],
  90                                    "locale.LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
  91                                    "locale.LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
  92                                    "locale.LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
  93                                    "locale.LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
  94                                    NULL);
  95
  96                 if (r < 0 && r != -ENOENT)
  97                         log_warning("Failed to read /proc/cmdline: %s", strerror(-r));
  98         }
  99
 100         /* Hmm, nothing set on the kernel cmd line? Then let's
 101          * try /etc/locale.conf */
 102         if (r <= 0) {
 103                 r = parse_env_file("/etc/locale.conf", NEWLINE,
 104                                    "LANG",              &variables[VARIABLE_LANG],
 105                                    "LANGUAGE",          &variables[VARIABLE_LANGUAGE],
 106                                    "LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
 107                                    "LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
 108                                    "LC_TIME",           &variables[VARIABLE_LC_TIME],
 109                                    "LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
 110                                    "LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
 111                                    "LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
 112                                    "LC_PAPER",          &variables[VARIABLE_LC_PAPER],
 113                                    "LC_NAME",           &variables[VARIABLE_LC_NAME],
 114                                    "LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
 115                                    "LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
 116                                    "LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
 117                                    "LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
 118                                    NULL);
 119
 120                 if (r < 0 && r != -ENOENT)
 121                         log_warning("Failed to read /etc/locale.conf: %s", strerror(-r));
 122         }
 123
 124 #if defined(TARGET_ALTLINUX)
 125         if (r <= 0) {
 126                 r = parse_env_file("/etc/sysconfig/i18n", NEWLINE,
 127                                    "LANG", &variables[VARIABLE_LANG],
 128                                    NULL);
 129
 130                 if (r < 0 && r != -ENOENT)
 131                         log_warning("Failed to read /etc/sysconfig/i18n: %s", strerror(-r));
 132         }
 133
 134 #elif defined(TARGET_SUSE)
 135         if (r <= 0) {
 136                 r = parse_env_file("/etc/sysconfig/language", NEWLINE,
 137                                    "RC_LANG", &variables[VARIABLE_LANG],
 138                                    NULL);
 139
 140                 if (r < 0 && r != -ENOENT)
 141                         log_warning("Failed to read /etc/sysconfig/language: %s", strerror(-r));
 142         }
 143
 144 #elif defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
 145         if (r <= 0) {
 146                 r = parse_env_file("/etc/default/locale", NEWLINE,
 147                                    "LANG",              &variables[VARIABLE_LANG],
 148                                    "LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
 149                                    "LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
 150                                    "LC_TIME",           &variables[VARIABLE_LC_TIME],
 151                                    "LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
 152                                    "LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
 153                                    "LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
 154                                    "LC_PAPER",          &variables[VARIABLE_LC_PAPER],
 155                                    "LC_NAME",           &variables[VARIABLE_LC_NAME],
 156                                    "LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
 157                                    "LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
 158                                    "LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
 159                                    "LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
 160                                    NULL);
 161
 162                 if (r < 0 && r != -ENOENT)
 163                         log_warning("Failed to read /etc/default/locale: %s", strerror(-r));
 164         }
 165
 166 #elif defined(TARGET_GENTOO)
 167         /* Gentoo's openrc expects locale variables in /etc/env.d/
 168          * These files are later compiled by env-update into shell
 169          * export commands at /etc/profile.env, with variables being
 170          * exported by openrc's runscript (so /etc/init.d/)
 171          */
 172         if (r <= 0) {
 173                 r = parse_env_file("/etc/profile.env", NEWLINE,
 174                                    "export LANG",              &variables[VARIABLE_LANG],
 175                                    "export LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
 176                                    "export LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
 177                                    "export LC_TIME",           &variables[VARIABLE_LC_TIME],
 178                                    "export LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
 179                                    "export LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
 180                                    "export LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
 181                                    "export LC_PAPER",          &variables[VARIABLE_LC_PAPER],
 182                                    "export LC_NAME",           &variables[VARIABLE_LC_NAME],
 183                                    "export LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
 184                                    "export LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
 185                                    "export LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
 186                                    "export LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
 187                                    NULL);
 188
 189                 if (r < 0 && r != -ENOENT)
 190                         log_warning("Failed to read /etc/profile.env: %s", strerror(-r));
 191         }
 192
 193 #elif defined(TARGET_MANDRIVA) || defined(TARGET_MAGEIA)
 194         if (r <= 0) {
 195                 r = parse_env_file("/etc/sysconfig/i18n", NEWLINE,
 196                                    "LANG",              &variables[VARIABLE_LANG],
 197                                    "LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
 198                                    "LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
 199                                    "LC_TIME",           &variables[VARIABLE_LC_TIME],
 200                                    "LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
 201                                    "LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
 202                                    "LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
 203                                    "LC_PAPER",          &variables[VARIABLE_LC_PAPER],
 204                                    "LC_NAME",           &variables[VARIABLE_LC_NAME],
 205                                    "LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
 206                                    "LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
 207                                    "LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
 208                                    "LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
 209                                    NULL);
 210
 211                 if (r < 0 && r != -ENOENT)
 212                         log_warning("Failed to read /etc/sysconfig/i18n: %s", strerror(-r));
 213         }
 214
 215 #endif
 216
 217         if (!variables[VARIABLE_LANG]) {
 218                 variables[VARIABLE_LANG] = strdup("C");
 219                 if (!variables[VARIABLE_LANG]) {
 220                         r = -ENOMEM;
 221                         goto finish;
 222                 }
 223         }
 224
 225         for (i = 0; i < _VARIABLE_MAX; i++) {
 226                 if (variables[i]) {
 227                         if (setenv(variable_names[i], variables[i], 1) < 0) {
 228                                 r = -errno;
 229                                 goto finish;
 230                         }
 231                 } else
 232                         unsetenv(variable_names[i]);
 233         }
 234
 235         r = 0;
 236
 237 finish:
 238         for (i = 0; i < _VARIABLE_MAX; i++)
 239                 free(variables[i]);
 240
 241         return r;
 242 }