mirror of https://github.com/sudo-project/sudo.git
136 lines
3.7 KiB
C
136 lines
3.7 KiB
C
/*
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* SPDX-License-Identifier: ISC
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*
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* Copyright (c) 2014-2015 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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#include <string.h>
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#include <sudoers.h>
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static int sudoers_debug_instance = SUDO_DEBUG_INSTANCE_INITIALIZER;
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static unsigned int sudoers_debug_refcnt;
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static const char *const sudoers_subsystem_names[] = {
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"alias",
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"audit",
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"auth",
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"defaults",
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"env",
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"event",
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"ldap",
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"logging",
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"main",
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"match",
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"netif",
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"nss",
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"parser",
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"perms",
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"plugin",
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"rbtree",
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"sssd",
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"util",
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NULL
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};
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#define NUM_SUBSYSTEMS (nitems(sudoers_subsystem_names) - 1)
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/* Subsystem IDs assigned at registration time. */
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unsigned int sudoers_subsystem_ids[NUM_SUBSYSTEMS];
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/*
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* Parse the "filename flags,..." debug_flags entry and insert a new
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* sudo_debug_file struct into debug_files.
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*/
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bool
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sudoers_debug_parse_flags(struct sudo_conf_debug_file_list *debug_files,
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const char *entry)
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{
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/* Already initialized? */
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if (sudoers_debug_instance != SUDO_DEBUG_INSTANCE_INITIALIZER)
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return true;
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return sudo_debug_parse_flags(debug_files, entry) != -1;
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}
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/*
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* Register the specified debug files and program with the
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* debug subsystem, freeing the debug list when done.
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* Sets the active debug instance as a side effect.
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*/
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bool
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sudoers_debug_register(const char *program,
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struct sudo_conf_debug_file_list *debug_files)
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{
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int instance = sudoers_debug_instance;
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struct sudo_debug_file *debug_file, *debug_next;
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/* Setup debugging if indicated. */
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if (debug_files != NULL && !TAILQ_EMPTY(debug_files)) {
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if (program != NULL) {
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instance = sudo_debug_register(program, sudoers_subsystem_names,
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sudoers_subsystem_ids, debug_files, -1);
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}
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TAILQ_FOREACH_SAFE(debug_file, debug_files, entries, debug_next) {
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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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}
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switch (instance) {
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case SUDO_DEBUG_INSTANCE_ERROR:
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return false;
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case SUDO_DEBUG_INSTANCE_INITIALIZER:
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/* Nothing to do */
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break;
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default:
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/* New debug instance or additional reference on existing one. */
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sudoers_debug_instance = instance;
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sudo_debug_set_active_instance(sudoers_debug_instance);
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sudoers_debug_refcnt++;
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break;
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}
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return true;
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}
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/*
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* Deregister sudoers_debug_instance if it is registered.
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*/
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void
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sudoers_debug_deregister(void)
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{
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debug_decl(sudoers_debug_deregister, SUDOERS_DEBUG_PLUGIN);
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if (sudoers_debug_refcnt != 0) {
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sudo_debug_exit(__func__, __FILE__, __LINE__, sudo_debug_subsys);
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if (--sudoers_debug_refcnt == 0) {
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if (sudo_debug_deregister(sudoers_debug_instance) < 1)
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sudoers_debug_instance = SUDO_DEBUG_INSTANCE_INITIALIZER;
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}
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}
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}
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