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/*
* SPDX-License-Identifier: ISC
*
* Copyright (c) 2012-2016, 2020, 2022 Todd C. Miller <Todd.Miller@sudo.ws>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* This is an open source non-commercial project. Dear PVS-Studio, please check it.
* PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_STDBOOL_H
# include <stdbool.h>
#else
# include <compat/stdbool.h>
#endif /* HAVE_STDBOOL_H */
#define DEFAULT_TEXT_DOMAIN "sudoers"
#include <sudo_compat.h>
#include <sudo_eventlog.h>
#include <sudo_fatal.h>
#include <sudo_gettext.h>
#include <sudoers_debug.h>
#include <defaults.h>
#include <logging.h>
static int current_locale = SUDOERS_LOCALE_USER;
static char *user_locale;
static char *sudoers_locale;
int
sudoers_getlocale(void)
{
debug_decl(sudoers_getlocale, SUDOERS_DEBUG_UTIL);
debug_return_int(current_locale);
}
bool
sudoers_initlocale(const char *ulocale, const char *slocale)
{
debug_decl(sudoers_initlocale, SUDOERS_DEBUG_UTIL);
if (ulocale != NULL) {
free(user_locale);
if ((user_locale = strdup(ulocale)) == NULL)
debug_return_bool(false);
}
if (slocale != NULL) {
free(sudoers_locale);
if ((sudoers_locale = strdup(slocale)) == NULL)
debug_return_bool(false);
}
sudo_debug_printf(SUDO_DEBUG_INFO, "%s: user locale %s, sudoers locale %s",
__func__, user_locale, sudoers_locale);
debug_return_bool(true);
}
/*
* Set locale to user or sudoers value.
* Returns true on success and false on failure,
* If prev_locale is non-NULL it will be filled in with the
* old SUDOERS_LOCALE_* value.
*/
bool
sudoers_setlocale(int locale_type, int *prev_locale)
{
char *res = NULL;
debug_decl(sudoers_setlocale, SUDOERS_DEBUG_UTIL);
switch (locale_type) {
case SUDOERS_LOCALE_USER:
if (prev_locale)
*prev_locale = current_locale;
if (current_locale != SUDOERS_LOCALE_USER) {
current_locale = SUDOERS_LOCALE_USER;
sudo_debug_printf(SUDO_DEBUG_DEBUG,
"%s: setting locale to %s (user)", __func__,
user_locale ? user_locale : "");
res = setlocale(LC_ALL, user_locale ? user_locale : "");
if (res != NULL && user_locale == NULL) {
user_locale = setlocale(LC_ALL, NULL);
if (user_locale != NULL)
user_locale = strdup(user_locale);
if (user_locale == NULL)
res = NULL;
}
}
break;
case SUDOERS_LOCALE_SUDOERS:
if (prev_locale)
*prev_locale = current_locale;
if (current_locale != SUDOERS_LOCALE_SUDOERS) {
current_locale = SUDOERS_LOCALE_SUDOERS;
sudo_debug_printf(SUDO_DEBUG_DEBUG,
"%s: setting locale to %s (sudoers)", __func__,
sudoers_locale ? sudoers_locale : "C");
res = setlocale(LC_ALL, sudoers_locale ? sudoers_locale : "C");
if (res == NULL && sudoers_locale != NULL) {
if (strcmp(sudoers_locale, "C") != 0) {
free(sudoers_locale);
sudoers_locale = strdup("C");
if (sudoers_locale != NULL)
res = setlocale(LC_ALL, "C");
}
}
}
break;
}
debug_return_bool(res ? true : false);
}
bool
sudoers_warn_setlocale(bool restore, int *cookie)
{
debug_decl(sudoers_warn_setlocale, SUDOERS_DEBUG_UTIL);
if (restore)
debug_return_bool(sudoers_setlocale(*cookie, NULL));
debug_return_bool(sudoers_setlocale(SUDOERS_LOCALE_USER, cookie));
}
/*
* Callback for sudoers_locale sudoers setting.
*/
bool
sudoers_locale_callback(struct sudoers_context *ctx, const char *file,
int line, int column, const union sudo_defs_val *sd_un, int op)
{
debug_decl(sudoers_locale_callback, SUDOERS_DEBUG_UTIL);
if (sudoers_initlocale(NULL, sd_un->str)) {
if (setlocale(LC_ALL, sd_un->str) != NULL)
debug_return_bool(true);
}
debug_return_bool(false);
}
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