formatting, remove some unnecessary casts, and other little code cleanups. git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@7331 65c4cc65-6c06-0410-ace0-fbb531ad65f3
206 lines
5.4 KiB
C
206 lines
5.4 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2005, Olle E. Johansson, Edvina.net
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief MD5 checksum application
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*
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* \todo Remove this deprecated application in 1.3dev
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* \ingroup applications
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include "asterisk/file.h"
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#include "asterisk/logger.h"
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#include "asterisk/utils.h"
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#include "asterisk/options.h"
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#include "asterisk/channel.h"
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#include "asterisk/pbx.h"
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#include "asterisk/module.h"
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#include "asterisk/lock.h"
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#include "asterisk/app.h"
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static char *tdesc_md5 = "MD5 checksum applications";
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static char *app_md5 = "MD5";
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static char *desc_md5 = "Calculate MD5 checksum";
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static char *synopsis_md5 =
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" MD5(<var>=<string>): Calculates a MD5 checksum on <string>.\n"
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"Returns hash value in a channel variable. \n";
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static char *app_md5check = "MD5Check";
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static char *desc_md5check = "Check MD5 checksum";
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static char *synopsis_md5check =
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" MD5Check(<md5hash>|<string>[|options]): Calculates a MD5 checksum on <string>\n"
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"and compares it with the hash. Returns 0 if <md5hash> is correct for <string>.\n"
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"The option string may contain zero or more of the following characters:\n"
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" 'j' -- jump to priority n+101 if the hash and string do not match \n"
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"This application sets the following channel variable upon completion:\n"
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" CHECKMD5STATUS The status of the MD5 check, one of the following\n"
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" MATCH | NOMATCH\n";
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STANDARD_LOCAL_USER;
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LOCAL_USER_DECL;
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/*--- md5_exec: Calculate MD5 checksum (hash) on given string and
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return it in channel variable ---*/
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static int md5_exec(struct ast_channel *chan, void *data)
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{
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int res=0;
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struct localuser *u;
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char *varname= NULL; /* Variable to set */
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char *string = NULL; /* String to calculate on */
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char retvar[50]; /* Return value */
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static int dep_warning = 0;
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if (!dep_warning) {
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ast_log(LOG_WARNING, "This application has been deprecated, please use the MD5 function instead.\n");
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dep_warning = 1;
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}
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if (ast_strlen_zero(data)) {
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ast_log(LOG_WARNING, "Syntax: md5(<varname>=<string>) - missing argument!\n");
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return -1;
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}
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LOCAL_USER_ADD(u);
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memset(retvar,0, sizeof(retvar));
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string = ast_strdupa(data);
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varname = strsep(&string,"=");
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if (ast_strlen_zero(varname)) {
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ast_log(LOG_WARNING, "Syntax: md5(<varname>=<string>) - missing argument!\n");
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LOCAL_USER_REMOVE(u);
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return -1;
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}
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ast_md5_hash(retvar, string);
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pbx_builtin_setvar_helper(chan, varname, retvar);
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LOCAL_USER_REMOVE(u);
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return res;
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}
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/*--- md5check_exec: Calculate MD5 checksum and compare it with
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existing checksum. ---*/
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static int md5check_exec(struct ast_channel *chan, void *data)
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{
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int res=0;
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struct localuser *u;
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char *string = NULL; /* String to calculate on */
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char newhash[50]; /* Return value */
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static int dep_warning = 0;
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int priority_jump = 0;
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AST_DECLARE_APP_ARGS(args,
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AST_APP_ARG(md5hash);
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AST_APP_ARG(string);
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AST_APP_ARG(options);
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);
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if (!dep_warning) {
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ast_log(LOG_WARNING, "This application has been deprecated, please use the CHECK_MD5 function instead.\n");
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dep_warning = 1;
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}
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LOCAL_USER_ADD(u);
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if (!(string = ast_strdupa(data))) {
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ast_log(LOG_WARNING, "Memory Error!\n");
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LOCAL_USER_REMOVE(u);
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return -1;
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}
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AST_STANDARD_APP_ARGS(args, string);
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if (args.options) {
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if (strchr(args.options, 'j'))
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priority_jump = 1;
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}
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if (ast_strlen_zero(args.md5hash) || ast_strlen_zero(args.string)) {
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ast_log(LOG_WARNING, "Syntax: MD5Check(<md5hash>|<string>[|options]) - missing argument!\n");
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LOCAL_USER_REMOVE(u);
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return -1;
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}
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memset(newhash,0, sizeof(newhash));
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ast_md5_hash(newhash, args.string);
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if (!strcmp(newhash, args.md5hash)) { /* Verification ok */
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if (option_debug > 2)
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ast_log(LOG_DEBUG, "MD5 verified ok: %s -- %s\n", args.md5hash, args.string);
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pbx_builtin_setvar_helper(chan, "CHECKMD5STATUS", "MATCH");
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LOCAL_USER_REMOVE(u);
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return 0;
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}
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if (option_debug > 2)
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ast_log(LOG_DEBUG, "ERROR: MD5 not verified: %s -- %s\n", args.md5hash, args.string);
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pbx_builtin_setvar_helper(chan, "CHECKMD5STATUS", "NOMATCH");
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if (priority_jump || ast_opt_priority_jumping) {
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if (ast_goto_if_exists(chan, chan->context, chan->exten, chan->priority + 101))
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if (option_debug > 2)
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ast_log(LOG_DEBUG, "ERROR: Can't jump to exten+101 (e%s,p%d), sorry\n", chan->exten,chan->priority+101);
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}
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LOCAL_USER_REMOVE(u);
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return res;
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}
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int unload_module(void)
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{
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int res;
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res = ast_unregister_application(app_md5);
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res |= ast_unregister_application(app_md5check);
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STANDARD_HANGUP_LOCALUSERS;
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return res;
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}
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int load_module(void)
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{
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int res;
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res = ast_register_application(app_md5check, md5check_exec, desc_md5check, synopsis_md5check);
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res |= ast_register_application(app_md5, md5_exec, desc_md5, synopsis_md5);
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return res;
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}
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char *description(void)
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{
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return tdesc_md5;
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}
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int usecount(void)
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{
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int res;
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STANDARD_USECOUNT(res);
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return res;
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}
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char *key()
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{
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return ASTERISK_GPL_KEY;
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}
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