src/core/locale-setup.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <errno.h>
   4 #include <stdlib.h>
   5 #include <string.h>
   6
   7 #include "env-file.h"
   8 #include "env-util.h"
   9 #include "locale-setup.h"
  10 #include "locale-util.h"
  11 #include "proc-cmdline.h"
  12 #include "string-util.h"
  13 #include "strv.h"
  14 #include "util.h"
  15 #include "virt.h"
  16
  17 int locale_setup(char ***environment) {
  18         _cleanup_(locale_variables_freep) char *variables[_VARIABLE_LC_MAX] = {};
  19         _cleanup_strv_free_ char **add = NULL;
  20         LocaleVariable i;
  21         int r;
  22
  23         r = proc_cmdline_get_key_many(PROC_CMDLINE_STRIP_RD_PREFIX,
  24                                       "locale.LANG",              &variables[VARIABLE_LANG],
  25                                       "locale.LANGUAGE",          &variables[VARIABLE_LANGUAGE],
  26                                       "locale.LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
  27                                       "locale.LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
  28                                       "locale.LC_TIME",           &variables[VARIABLE_LC_TIME],
  29                                       "locale.LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
  30                                       "locale.LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
  31                                       "locale.LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
  32                                       "locale.LC_PAPER",          &variables[VARIABLE_LC_PAPER],
  33                                       "locale.LC_NAME",           &variables[VARIABLE_LC_NAME],
  34                                       "locale.LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
  35                                       "locale.LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
  36                                       "locale.LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
  37                                       "locale.LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION]);
  38         if (r < 0 && r != -ENOENT)
  39                 log_warning_errno(r, "Failed to read /proc/cmdline: %m");
  40
  41         /* Hmm, nothing set on the kernel cmd line? Then let's try /etc/locale.conf */
  42         if (r <= 0) {
  43                 r = parse_env_file(NULL, "/etc/locale.conf",
  44                                    "LANG",              &variables[VARIABLE_LANG],
  45                                    "LANGUAGE",          &variables[VARIABLE_LANGUAGE],
  46                                    "LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
  47                                    "LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
  48                                    "LC_TIME",           &variables[VARIABLE_LC_TIME],
  49                                    "LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
  50                                    "LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
  51                                    "LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
  52                                    "LC_PAPER",          &variables[VARIABLE_LC_PAPER],
  53                                    "LC_NAME",           &variables[VARIABLE_LC_NAME],
  54                                    "LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
  55                                    "LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
  56                                    "LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
  57                                    "LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION]);
  58                 if (r < 0 && r != -ENOENT)
  59                         log_warning_errno(r, "Failed to read /etc/locale.conf: %m");
  60         }
  61
  62         for (i = 0; i < _VARIABLE_LC_MAX; i++) {
  63                 char *s;
  64
  65                 if (!variables[i])
  66                         continue;
  67
  68                 s = strjoin(locale_variable_to_string(i), "=", variables[i]);
  69                 if (!s)
  70                         return -ENOMEM;
  71
  72                 if (strv_consume(&add, s) < 0)
  73                         return -ENOMEM;
  74         }
  75
  76         if (strv_isempty(add)) {
  77                 /* If no locale is configured then default to compile-time default. */
  78
  79                 add = strv_new("LANG=" SYSTEMD_DEFAULT_LOCALE);
  80                 if (!add)
  81                         return -ENOMEM;
  82         }
  83
  84         if (strv_isempty(*environment))
  85                 strv_free_and_replace(*environment, add);
  86         else {
  87                 char **merged;
  88
  89                 merged = strv_env_merge(2, *environment, add);
  90                 if (!merged)
  91                         return -ENOMEM;
  92
  93                 strv_free_and_replace(*environment, merged);
  94         }
  95
  96         return 0;
  97 }