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_LC_CTYPE,
  36         VARIABLE_LC_NUMERIC,
  37         VARIABLE_LC_TIME,
  38         VARIABLE_LC_COLLATE,
  39         VARIABLE_LC_MONETARY,
  40         VARIABLE_LC_MESSAGES,
  41         VARIABLE_LC_PAPER,
  42         VARIABLE_LC_NAME,
  43         VARIABLE_LC_ADDRESS,
  44         VARIABLE_LC_TELEPHONE,
  45         VARIABLE_LC_MEASUREMENT,
  46         VARIABLE_LC_IDENTIFICATION,
  47         _VARIABLE_MAX
  48 };
  49
  50 static const char * const variable_names[_VARIABLE_MAX] = {
  51         [VARIABLE_LANG] = "LANG",
  52         [VARIABLE_LC_CTYPE] = "LC_CTYPE",
  53         [VARIABLE_LC_NUMERIC] = "LC_NUMERIC",
  54         [VARIABLE_LC_TIME] = "TIME",
  55         [VARIABLE_LC_COLLATE] = "COLLATE",
  56         [VARIABLE_LC_MONETARY] = "MONETARY",
  57         [VARIABLE_LC_MESSAGES] = "MESSAGE",
  58         [VARIABLE_LC_PAPER] = "PAPER",
  59         [VARIABLE_LC_NAME] = "NAME",
  60         [VARIABLE_LC_ADDRESS] = "ADDRESS",
  61         [VARIABLE_LC_TELEPHONE] = "TELEPHONE",
  62         [VARIABLE_LC_MEASUREMENT] = "MEASUREMENT",
  63         [VARIABLE_LC_IDENTIFICATION] = "IDENTIFICATION"
  64 };
  65
  66 int locale_setup(void) {
  67         char *variables[_VARIABLE_MAX];
  68         int r, i;
  69
  70         zero(variables);
  71
  72         if ((r = parse_env_file("/proc/cmdline", WHITESPACE,
  73 #ifdef TARGET_FEDORA
  74                                 "LANG",                     &variables[VARIABLE_LANG],
  75 #endif
  76                                 "locale.LANG",              &variables[VARIABLE_LANG],
  77                                 "locale.LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
  78                                 "locale.LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
  79                                 "locale.LC_TIME",           &variables[VARIABLE_LC_TIME],
  80                                 "locale.LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
  81                                 "locale.LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
  82                                 "locale.LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
  83                                 "locale.LC_PAPER",          &variables[VARIABLE_LC_PAPER],
  84                                 "locale.LC_NAME",           &variables[VARIABLE_LC_NAME],
  85                                 "locale.LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
  86                                 "locale.LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
  87                                 "locale.LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
  88                                 "locale.LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
  89                                 NULL)) < 0) {
  90
  91                 if (r != -ENOENT)
  92                         log_warning("Failed to read /proc/cmdline: %s", strerror(-r));
  93         }
  94
  95         /* Hmm, nothing set on the kernel cmd line? Then let's
  96          * try /etc/locale.conf */
  97         if (r <= 0 &&
  98             (r = parse_env_file("/etc/locale.conf", NEWLINE,
  99                                "LANG",              &variables[VARIABLE_LANG],
 100                                "LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
 101                                "LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
 102                                "LC_TIME",           &variables[VARIABLE_LC_TIME],
 103                                "LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
 104                                "LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
 105                                "LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
 106                                "LC_PAPER",          &variables[VARIABLE_LC_PAPER],
 107                                "LC_NAME",           &variables[VARIABLE_LC_NAME],
 108                                "LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
 109                                "LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
 110                                "LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
 111                                "LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
 112                                 NULL)) < 0) {
 113
 114                 if (r != -ENOENT)
 115                         log_warning("Failed to read /etc/locale.conf: %s", strerror(-r));
 116         }
 117
 118 #ifdef TARGET_FEDORA
 119         if (r <= 0 &&
 120             (r = parse_env_file("/etc/sysconfig/i18n", NEWLINE,
 121                                 "LANG", &variables[VARIABLE_LANG],
 122                                 NULL)) < 0) {
 123
 124                 if (r != -ENOENT)
 125                         log_warning("Failed to read /etc/sysconfig/i18n: %s", strerror(-r));
 126         }
 127
 128 #elif defined(TARGET_SUSE)
 129         if (r <= 0 &&
 130             (r = parse_env_file("/etc/sysconfig/language", NEWLINE,
 131                                 "RC_LANG", &variables[VARIABLE_LANG],
 132                                 NULL)) < 0) {
 133
 134                 if (r != -ENOENT)
 135                         log_warning("Failed to read /etc/sysconfig/language: %s", strerror(-r));
 136         }
 137
 138 #elif defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU)
 139         if (r <= 0 &&
 140             (r = parse_env_file("/etc/default/locale", NEWLINE,
 141                                 "LANG", &variables[VARIABLE_LANG],
 142                                 NULL)) < 0) {
 143
 144                 if (r != -ENOENT)
 145                         log_warning("Failed to read /etc/default/locale: %s", strerror(-r));
 146         }
 147
 148 #elif defined(TARGET_ARCH)
 149         if (r <= 0 &&
 150             (r = parse_env_file("/etc/rc.conf", NEWLINE,
 151                                 "LOCALE", &variables[VARIABLE_LANG],
 152                                 NULL)) < 0) {
 153
 154                 if (r != -ENOENT)
 155                         log_warning("Failed to read /etc/rc.conf: %s", strerror(-r));
 156         }
 157
 158 #elif defined(TARGET_GENTOO)
 159         /* Gentoo's openrc expects locale variables in /etc/env.d/
 160          * These files are later compiled by env-update into shell
 161          * export commands at /etc/profile.env, with variables being
 162          * exported by openrc's runscript (so /etc/init.d/)
 163          */
 164         if (r <= 0 &&
 165             (r = parse_env_file("/etc/profile.env", NEWLINE,
 166                                 "export LANG",              &variables[VARIABLE_LANG],
 167                                 "export LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
 168                                 "export LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
 169                                 "export LC_TIME",           &variables[VARIABLE_LC_TIME],
 170                                 "export LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
 171                                 "export LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
 172                                 "export LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
 173                                 "export LC_PAPER",          &variables[VARIABLE_LC_PAPER],
 174                                 "export LC_NAME",           &variables[VARIABLE_LC_NAME],
 175                                 "export LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
 176                                 "export LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
 177                                 "export LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
 178                                 "export LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
 179                                 NULL)) < 0) {
 180
 181                 if (r != -ENOENT)
 182                         log_warning("Failed to read /etc/profile.env: %s", strerror(-r));
 183         }
 184 #endif
 185
 186         if (!variables[VARIABLE_LANG]) {
 187                 if (!(variables[VARIABLE_LANG] = strdup("C"))) {
 188                         r = -ENOMEM;
 189                         goto finish;
 190                 }
 191         }
 192
 193         for (i = 0; i < _VARIABLE_MAX; i++) {
 194
 195                 if (variables[i]) {
 196                         if (setenv(variable_names[i], variables[i], 1) < 0) {
 197                                 r = -errno;
 198                                 goto finish;
 199                         }
 200                 } else
 201                         unsetenv(variable_names[i]);
 202         }
 203
 204         r = 0;
 205
 206 finish:
 207         for (i = 0; i < _VARIABLE_MAX; i++)
 208                 free(variables[i]);
 209
 210         return r;
 211 }