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/* Regression test for setlocale invalid environment variable handling.
Copyright (C) 2014-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/* The result of setlocale may be overwritten by subsequent calls, so
this wrapper makes a copy. */
static char *
setlocale_copy (int category, const char *locale)
{
const char *result = setlocale (category, locale);
if (result == NULL)
return NULL;
return strdup (result);
}
static char *de_locale;
static void
setlocale_fail (const char *envstring)
{
setenv ("LC_CTYPE", envstring, 1);
if (setlocale (LC_CTYPE, "") != NULL)
{
printf ("unexpected setlocale success for \"%s\" locale\n", envstring);
exit (1);
}
const char *newloc = setlocale (LC_CTYPE, NULL);
if (strcmp (newloc, de_locale) != 0)
{
printf ("failed setlocale call \"%s\" changed locale to \"%s\"\n",
envstring, newloc);
exit (1);
}
}
static void
setlocale_success (const char *envstring)
{
setenv ("LC_CTYPE", envstring, 1);
char *newloc = setlocale_copy (LC_CTYPE, "");
if (newloc == NULL)
{
printf ("setlocale for \"%s\": %m\n", envstring);
exit (1);
}
if (strcmp (newloc, de_locale) == 0)
{
printf ("setlocale with LC_CTYPE=\"%s\" left locale at \"%s\"\n",
envstring, de_locale);
exit (1);
}
if (setlocale (LC_CTYPE, de_locale) == NULL)
{
printf ("restoring locale \"%s\" with LC_CTYPE=\"%s\": %m\n",
de_locale, envstring);
exit (1);
}
char *newloc2 = setlocale_copy (LC_CTYPE, newloc);
if (newloc2 == NULL)
{
printf ("restoring locale \"%s\" following \"%s\": %m\n",
newloc, envstring);
exit (1);
}
if (strcmp (newloc, newloc2) != 0)
{
printf ("representation of locale \"%s\" changed from \"%s\" to \"%s\"",
envstring, newloc, newloc2);
exit (1);
}
free (newloc);
free (newloc2);
if (setlocale (LC_CTYPE, de_locale) == NULL)
{
printf ("restoring locale \"%s\" with LC_CTYPE=\"%s\": %m\n",
de_locale, envstring);
exit (1);
}
}
/* Checks that a known-good locale still works if LC_ALL contains a
value which should be ignored. */
static void
setlocale_ignore (const char *to_ignore)
{
const char *fr_locale = "fr_FR.UTF-8";
setenv ("LC_CTYPE", fr_locale, 1);
char *expected_locale = setlocale_copy (LC_CTYPE, "");
if (expected_locale == NULL)
{
printf ("setlocale with LC_CTYPE=\"%s\" failed: %m\n", fr_locale);
exit (1);
}
if (setlocale (LC_CTYPE, de_locale) == NULL)
{
printf ("failed to restore locale: %m\n");
exit (1);
}
unsetenv ("LC_CTYPE");
setenv ("LC_ALL", to_ignore, 1);
setenv ("LC_CTYPE", fr_locale, 1);
const char *actual_locale = setlocale (LC_CTYPE, "");
if (actual_locale == NULL)
{
printf ("setlocale with LC_ALL, LC_CTYPE=\"%s\" failed: %m\n",
fr_locale);
exit (1);
}
if (strcmp (actual_locale, expected_locale) != 0)
{
printf ("setlocale under LC_ALL failed: got \"%s\", expected \"%s\"\n",
actual_locale, expected_locale);
exit (1);
}
unsetenv ("LC_CTYPE");
setlocale_success (fr_locale);
unsetenv ("LC_ALL");
free (expected_locale);
}
static int
do_test (void)
{
/* The glibc test harness sets this environment variable
uncondionally. */
unsetenv ("LC_ALL");
de_locale = setlocale_copy (LC_CTYPE, "de_DE.UTF-8");
if (de_locale == NULL)
{
printf ("setlocale (LC_CTYPE, \"de_DE.UTF-8\"): %m\n");
return 1;
}
setlocale_success ("C");
setlocale_success ("en_US.UTF-8");
setlocale_success ("/en_US.UTF-8");
setlocale_success ("//en_US.UTF-8");
setlocale_ignore ("");
setlocale_fail ("does-not-exist");
setlocale_fail ("/");
setlocale_fail ("/../localedata/en_US.UTF-8");
setlocale_fail ("en_US.UTF-8/");
setlocale_fail ("en_US.UTF-8/..");
setlocale_fail ("en_US.UTF-8/../en_US.UTF-8");
setlocale_fail ("../localedata/en_US.UTF-8");
{
size_t large_length = 1024;
char *large_name = malloc (large_length + 1);
if (large_name == NULL)
{
puts ("malloc failure");
return 1;
}
memset (large_name, '/', large_length);
const char *suffix = "en_US.UTF-8";
strcpy (large_name + large_length - strlen (suffix), suffix);
setlocale_fail (large_name);
free (large_name);
}
{
size_t huge_length = 64 * 1024 * 1024;
char *huge_name = malloc (huge_length + 1);
if (huge_name == NULL)
{
puts ("malloc failure");
return 1;
}
memset (huge_name, 'X', huge_length);
huge_name[huge_length] = '\0';
/* Construct a composite locale specification. */
const char *prefix = "LC_CTYPE=de_DE.UTF-8;LC_TIME=";
memcpy (huge_name, prefix, strlen (prefix));
setlocale_fail (huge_name);
free (huge_name);
}
return 0;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
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