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_consume(&add, s) < 0) {
 137                         r = -ENOMEM;
 138                         goto finish;
 139                 }
 140         }
 141
 142         if (!strv_isempty(add)) {
 143                 char **e;
 144
 145                 e = strv_env_merge(2, *environment, add);
 146                 if (!e) {
 147                         r = -ENOMEM;
 148                         goto finish;
 149                 }
 150
 151                 strv_free(*environment);
 152                 *environment = e;
 153         }
 154
 155         r = 0;
 156
 157 finish:
 158         strv_free(add);
 159
 160         for (i = 0; i < _VARIABLE_MAX; i++)
 161                 free(variables[i]);
 162
 163         return r;
 164 }