mirror of https://github.com/sudo-project/sudo.git
170 lines
4.8 KiB
C
170 lines
4.8 KiB
C
/*
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* SPDX-License-Identifier: ISC
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*
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* Copyright (c) 2020 Todd C. Miller <Todd.Miller@sudo.ws>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/*
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* This is an open source non-commercial project. Dear PVS-Studio, please check it.
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* PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#ifdef HAVE_STDBOOL_H
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# include <stdbool.h>
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#else
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# include <compat/stdbool.h>
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#endif /* HAVE_STDBOOL_H */
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#include <string.h>
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#include <unistd.h>
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#include <time.h>
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#include <sudo_compat.h>
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#include <sudo_conf.h>
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#include <sudo_debug.h>
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#include <sudo_fatal.h>
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#include <sudo_gettext.h>
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#include <sudo_plugin.h>
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#include <sudo_util.h>
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static int approval_debug_instance = SUDO_DEBUG_INSTANCE_INITIALIZER;
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sudo_printf_t sudo_printf;
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static int
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sample_approval_open(unsigned int version, sudo_conv_t conversation,
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sudo_printf_t plugin_printf, char * const settings[],
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char * const user_info[], int submit_optind, char * const submit_argv[],
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char * const submit_envp[], char * const plugin_options[],
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const char **errstr)
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{
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struct sudo_conf_debug_file_list debug_files =
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TAILQ_HEAD_INITIALIZER(debug_files);
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struct sudo_debug_file *debug_file;
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const char *cp, *plugin_path = NULL;
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char * const *cur;
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int ret = -1;
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debug_decl_vars(sample_approval_open, SUDO_DEBUG_PLUGIN);
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sudo_printf = plugin_printf;
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/* Initialize the debug subsystem. */
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for (cur = settings; (cp = *cur) != NULL; cur++) {
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if (strncmp(cp, "debug_flags=", sizeof("debug_flags=") - 1) == 0) {
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cp += sizeof("debug_flags=") - 1;
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if (sudo_debug_parse_flags(&debug_files, cp) == -1)
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goto oom;
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continue;
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}
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if (strncmp(cp, "plugin_path=", sizeof("plugin_path=") - 1) == 0) {
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plugin_path = cp + sizeof("plugin_path=") - 1;
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continue;
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}
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}
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if (plugin_path != NULL && !TAILQ_EMPTY(&debug_files)) {
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approval_debug_instance =
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sudo_debug_register(plugin_path, NULL, NULL, &debug_files, -1);
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if (approval_debug_instance == SUDO_DEBUG_INSTANCE_ERROR) {
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*errstr = U_("unable to initialize debugging");
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goto done;
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}
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sudo_debug_enter(__func__, __FILE__, __LINE__, sudo_debug_subsys);
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}
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ret = 1;
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goto done;
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oom:
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sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
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*errstr = U_("unable to allocate memory");
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done:
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while ((debug_file = TAILQ_FIRST(&debug_files)) != NULL) {
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TAILQ_REMOVE(&debug_files, debug_file, entries);
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free(debug_file->debug_file);
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free(debug_file->debug_flags);
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free(debug_file);
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}
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debug_return_int(ret);
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}
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static void
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sample_approval_close(void)
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{
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debug_decl(sample_approval_close, SUDO_DEBUG_PLUGIN);
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/* Nothing here, we could store a NULL pointer instead. */
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debug_return;
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}
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static int
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sample_approval_check(char * const command_info[], char * const run_argv[],
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char * const run_envp[], const char **errstr)
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{
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struct tm tm;
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time_t now;
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int ret = 0;
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debug_decl(sample_approval_check, SUDO_DEBUG_PLUGIN);
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/*
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* Only approve requests that are within business hours,
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* which are 9am - 5pm local time. Does not check holidays.
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*/
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if (time(&now) == -1 || localtime_r(&now, &tm) == NULL)
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goto done;
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if (tm.tm_wday < 1 || tm.tm_wday > 5) {
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/* bad weekday */
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goto done;
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}
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if (tm.tm_hour < 9 || tm.tm_hour > 17 ||
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(tm.tm_hour == 17 && tm.tm_min > 0)) {
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/* bad hour */
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goto done;
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}
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ret = 1;
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done:
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if (ret == 0) {
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*errstr = U_("You are not allowed to use sudo outside business hours");
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sudo_printf(SUDO_CONV_ERROR_MSG, "%s\n", *errstr);
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}
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debug_return_int(ret);
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}
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static int
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sample_approval_show_version(int verbose)
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{
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debug_decl(approval_show_version, SUDO_DEBUG_PLUGIN);
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sudo_printf(SUDO_CONV_INFO_MSG, "sample approval plugin version %s\n",
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PACKAGE_VERSION);
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debug_return_int(true);
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}
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sudo_dso_public struct approval_plugin sample_approval = {
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SUDO_APPROVAL_PLUGIN,
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SUDO_API_VERSION,
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sample_approval_open,
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sample_approval_close,
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sample_approval_check,
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sample_approval_show_version
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};
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