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-rw-r--r--plugins/sudoers/locale.c155
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..634de6d
--- /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(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);
+}