diff options
Diffstat (limited to 'plugins/sudoers/locale.c')
| -rw-r--r-- | plugins/sudoers/locale.c | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/plugins/sudoers/locale.c b/plugins/sudoers/locale.c new file mode 100644 index 0000000..40cee30 --- /dev/null +++ b/plugins/sudoers/locale.c @@ -0,0 +1,155 @@ +/* + * 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); +} |