src/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 General Public License as published by
  10   the Free Software Foundation; either version 2 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   General Public License for more details.
  17
  18   You should have received a copy of the GNU 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
  30 enum {
  31         /* We don't list LC_ALL here on purpose. People should be
  32          * using LANG instead. */
  33
  34         VARIABLE_LANG,
  35         VARIABLE_LANGUAGE,
  36         VARIABLE_LC_CTYPE,
  37         VARIABLE_LC_NUMERIC,
  38         VARIABLE_LC_TIME,
  39         VARIABLE_LC_COLLATE,
  40         VARIABLE_LC_MONETARY,
  41         VARIABLE_LC_MESSAGES,
  42         VARIABLE_LC_PAPER,
  43         VARIABLE_LC_NAME,
  44         VARIABLE_LC_ADDRESS,
  45         VARIABLE_LC_TELEPHONE,
  46         VARIABLE_LC_MEASUREMENT,
  47         VARIABLE_LC_IDENTIFICATION,
  48         _VARIABLE_MAX
  49 };
  50
  51 static const char * const variable_names[_VARIABLE_MAX] = {
  52         [VARIABLE_LANG] = "LANG",
  53         [VARIABLE_LANGUAGE] = "LANGUAGE",
  54         [VARIABLE_LC_CTYPE] = "LC_CTYPE",
  55         [VARIABLE_LC_NUMERIC] = "LC_NUMERIC",
  56         [VARIABLE_LC_TIME] = "LC_TIME",
  57         [VARIABLE_LC_COLLATE] = "LC_COLLATE",
  58         [VARIABLE_LC_MONETARY] = "LC_MONETARY",
  59         [VARIABLE_LC_MESSAGES] = "LC_MESSAGES",
  60         [VARIABLE_LC_PAPER] = "LC_PAPER",
  61         [VARIABLE_LC_NAME] = "LC_NAME",
  62         [VARIABLE_LC_ADDRESS] = "LC_ADDRESS",
  63         [VARIABLE_LC_TELEPHONE] = "LC_TELEPHONE",
  64         [VARIABLE_LC_MEASUREMENT] = "LC_MEASUREMENT",
  65         [VARIABLE_LC_IDENTIFICATION] = "LC_IDENTIFICATION"
  66 };
  67
  68 int locale_setup(void) {
  69         char *variables[_VARIABLE_MAX];
  70         int r = 0, i;
  71
  72         zero(variables);
  73
  74         if (detect_container(NULL) <= 0)
  75                 if ((r = parse_env_file("/proc/cmdline", WHITESPACE,
  76 #if defined(TARGET_FEDORA) || defined(TARGET_MEEGO)
  77                                         "LANG",                     &variables[VARIABLE_LANG],
  78 #endif
  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)) < 0) {
  94
  95                         if (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)) < 0) {
 118
 119                 if (r != -ENOENT)
 120                         log_warning("Failed to read /etc/locale.conf: %s", strerror(-r));
 121         }
 122
 123 #if defined(TARGET_FEDORA) || defined(TARGET_ALTLINUX) || defined(TARGET_MEEGO)
 124         if (r <= 0 &&
 125             (r = parse_env_file("/etc/sysconfig/i18n", NEWLINE,
 126                                 "LANG", &variables[VARIABLE_LANG],
 127                                 NULL)) < 0) {
 128
 129                 if (r != -ENOENT)
 130                         log_warning("Failed to read /etc/sysconfig/i18n: %s", strerror(-r));
 131         }
 132
 133 #elif defined(TARGET_SUSE)
 134         if (r <= 0 &&
 135             (r = parse_env_file("/etc/sysconfig/language", NEWLINE,
 136                                 "RC_LANG", &variables[VARIABLE_LANG],
 137                                 NULL)) < 0) {
 138
 139                 if (r != -ENOENT)
 140                         log_warning("Failed to read /etc/sysconfig/language: %s", strerror(-r));
 141         }
 142
 143 #elif defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
 144         if (r <= 0 &&
 145             (r = parse_env_file("/etc/default/locale", NEWLINE,
 146                                 "LANG",              &variables[VARIABLE_LANG],
 147                                 "LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
 148                                 "LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
 149                                 "LC_TIME",           &variables[VARIABLE_LC_TIME],
 150                                 "LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
 151                                 "LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
 152                                 "LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
 153                                 "LC_PAPER",          &variables[VARIABLE_LC_PAPER],
 154                                 "LC_NAME",           &variables[VARIABLE_LC_NAME],
 155                                 "LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
 156                                 "LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
 157                                 "LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
 158                                 "LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
 159                                 NULL)) < 0) {
 160
 161                 if (r != -ENOENT)
 162                         log_warning("Failed to read /etc/default/locale: %s", strerror(-r));
 163         }
 164
 165 #elif defined(TARGET_ARCH)
 166         if (r <= 0 &&
 167             (r = parse_env_file("/etc/rc.conf", NEWLINE,
 168                                 "LOCALE", &variables[VARIABLE_LANG],
 169                                 NULL)) < 0) {
 170
 171                 if (r != -ENOENT)
 172                         log_warning("Failed to read /etc/rc.conf: %s", strerror(-r));
 173         }
 174
 175 #elif defined(TARGET_GENTOO)
 176         /* Gentoo's openrc expects locale variables in /etc/env.d/
 177          * These files are later compiled by env-update into shell
 178          * export commands at /etc/profile.env, with variables being
 179          * exported by openrc's runscript (so /etc/init.d/)
 180          */
 181         if (r <= 0 &&
 182             (r = parse_env_file("/etc/profile.env", NEWLINE,
 183                                 "export LANG",              &variables[VARIABLE_LANG],
 184                                 "export LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
 185                                 "export LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
 186                                 "export LC_TIME",           &variables[VARIABLE_LC_TIME],
 187                                 "export LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
 188                                 "export LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
 189                                 "export LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
 190                                 "export LC_PAPER",          &variables[VARIABLE_LC_PAPER],
 191                                 "export LC_NAME",           &variables[VARIABLE_LC_NAME],
 192                                 "export LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
 193                                 "export LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
 194                                 "export LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
 195                                 "export LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
 196                                 NULL)) < 0) {
 197
 198                 if (r != -ENOENT)
 199                         log_warning("Failed to read /etc/profile.env: %s", strerror(-r));
 200         }
 201 #elif defined(TARGET_MANDRIVA)
 202         if (r <= 0 &&
 203             (r = parse_env_file("/etc/sysconfig/i18n", NEWLINE,
 204                                 "LANG",              &variables[VARIABLE_LANG],
 205                                 "LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
 206                                 "LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
 207                                 "LC_TIME",           &variables[VARIABLE_LC_TIME],
 208                                 "LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
 209                                 "LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
 210                                 "LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
 211                                 "LC_PAPER",          &variables[VARIABLE_LC_PAPER],
 212                                 "LC_NAME",           &variables[VARIABLE_LC_NAME],
 213                                 "LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
 214                                 "LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
 215                                 "LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
 216                                 "LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
 217                                 NULL)) < 0) {
 218
 219                 if (r != -ENOENT)
 220                         log_warning("Failed to read /etc/sysconfig/i18n: %s", strerror(-r));
 221         }
 222
 223 #endif
 224
 225         if (!variables[VARIABLE_LANG]) {
 226                 if (!(variables[VARIABLE_LANG] = strdup("C"))) {
 227                         r = -ENOMEM;
 228                         goto finish;
 229                 }
 230         }
 231
 232         for (i = 0; i < _VARIABLE_MAX; i++) {
 233
 234                 if (variables[i]) {
 235                         if (setenv(variable_names[i], variables[i], 1) < 0) {
 236                                 r = -errno;
 237                                 goto finish;
 238                         }
 239                 } else
 240                         unsetenv(variable_names[i]);
 241         }
 242
 243         r = 0;
 244
 245 finish:
 246         for (i = 0; i < _VARIABLE_MAX; i++)
 247                 free(variables[i]);
 248
 249         return r;
 250 }