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Diffstat (limited to '1.2-netsec/apps/app_md5.c')
| -rw-r--r-- | 1.2-netsec/apps/app_md5.c | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/1.2-netsec/apps/app_md5.c b/1.2-netsec/apps/app_md5.c new file mode 100644 index 000000000..4b018b33e --- /dev/null +++ b/1.2-netsec/apps/app_md5.c @@ -0,0 +1,205 @@ +/* + * Asterisk -- An open source telephony toolkit. + * + * Copyright (C) 2005, Olle E. Johansson, Edvina.net + * + * See http://www.asterisk.org for more information about + * the Asterisk project. Please do not directly contact + * any of the maintainers of this project for assistance; + * the project provides a web site, mailing lists and IRC + * channels for your use. + * + * This program is free software, distributed under the terms of + * the GNU General Public License Version 2. See the LICENSE file + * at the top of the source tree. + */ + + +/*! \file + * + * \brief MD5 checksum application + * + * \todo Remove this deprecated application in 1.3dev + * \ingroup applications + */ + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> + +#include "asterisk.h" + +ASTERISK_FILE_VERSION(__FILE__, "$Revision$") + +#include "asterisk/file.h" +#include "asterisk/logger.h" +#include "asterisk/utils.h" +#include "asterisk/options.h" +#include "asterisk/channel.h" +#include "asterisk/pbx.h" +#include "asterisk/module.h" +#include "asterisk/lock.h" +#include "asterisk/app.h" + +static char *tdesc_md5 = "MD5 checksum applications"; +static char *app_md5 = "MD5"; +static char *desc_md5 = "Calculate MD5 checksum"; +static char *synopsis_md5 = +" MD5(<var>=<string>): Calculates a MD5 checksum on <string>.\n" +"Returns hash value in a channel variable. \n"; + +static char *app_md5check = "MD5Check"; +static char *desc_md5check = "Check MD5 checksum"; +static char *synopsis_md5check = +" MD5Check(<md5hash>|<string>[|options]): Calculates a MD5 checksum on <string>\n" +"and compares it with the hash. Returns 0 if <md5hash> is correct for <string>.\n" +"The option string may contain zero or more of the following characters:\n" +" 'j' -- jump to priority n+101 if the hash and string do not match \n" +"This application sets the following channel variable upon completion:\n" +" CHECKMD5STATUS The status of the MD5 check, one of the following\n" +" MATCH | NOMATCH\n"; + +STANDARD_LOCAL_USER; + +LOCAL_USER_DECL; + +/*--- md5_exec: Calculate MD5 checksum (hash) on given string and + return it in channel variable ---*/ +static int md5_exec(struct ast_channel *chan, void *data) +{ + int res=0; + struct localuser *u; + char *varname= NULL; /* Variable to set */ + char *string = NULL; /* String to calculate on */ + char retvar[50]; /* Return value */ + static int dep_warning = 0; + + if (!dep_warning) { + ast_log(LOG_WARNING, "This application has been deprecated, please use the MD5 function instead.\n"); + dep_warning = 1; + } + + if (ast_strlen_zero(data)) { + ast_log(LOG_WARNING, "Syntax: md5(<varname>=<string>) - missing argument!\n"); + return -1; + } + + LOCAL_USER_ADD(u); + + memset(retvar,0, sizeof(retvar)); + string = ast_strdupa(data); + varname = strsep(&string,"="); + if (ast_strlen_zero(varname)) { + ast_log(LOG_WARNING, "Syntax: md5(<varname>=<string>) - missing argument!\n"); + LOCAL_USER_REMOVE(u); + return -1; + } + ast_md5_hash(retvar, string); + pbx_builtin_setvar_helper(chan, varname, retvar); + LOCAL_USER_REMOVE(u); + return res; +} + +/*--- md5check_exec: Calculate MD5 checksum and compare it with + existing checksum. ---*/ +static int md5check_exec(struct ast_channel *chan, void *data) +{ + int res=0; + struct localuser *u; + char *string = NULL; /* String to calculate on */ + char newhash[50]; /* Return value */ + static int dep_warning = 0; + int priority_jump = 0; + AST_DECLARE_APP_ARGS(args, + AST_APP_ARG(md5hash); + AST_APP_ARG(string); + AST_APP_ARG(options); + ); + + if (!dep_warning) { + ast_log(LOG_WARNING, "This application has been deprecated, please use the CHECK_MD5 function instead.\n"); + dep_warning = 1; + } + + LOCAL_USER_ADD(u); + + if (!(string = ast_strdupa(data))) { + ast_log(LOG_WARNING, "Memory Error!\n"); + LOCAL_USER_REMOVE(u); + return -1; + } + + AST_STANDARD_APP_ARGS(args, string); + + if (args.options) { + if (strchr(args.options, 'j')) + priority_jump = 1; + } + + if (ast_strlen_zero(args.md5hash) || ast_strlen_zero(args.string)) { + ast_log(LOG_WARNING, "Syntax: MD5Check(<md5hash>|<string>[|options]) - missing argument!\n"); + LOCAL_USER_REMOVE(u); + return -1; + } + + memset(newhash,0, sizeof(newhash)); + + ast_md5_hash(newhash, args.string); + if (!strcmp(newhash, args.md5hash)) { /* Verification ok */ + if (option_debug > 2) + ast_log(LOG_DEBUG, "MD5 verified ok: %s -- %s\n", args.md5hash, args.string); + pbx_builtin_setvar_helper(chan, "CHECKMD5STATUS", "MATCH"); + LOCAL_USER_REMOVE(u); + return 0; + } + if (option_debug > 2) + ast_log(LOG_DEBUG, "ERROR: MD5 not verified: %s -- %s\n", args.md5hash, args.string); + pbx_builtin_setvar_helper(chan, "CHECKMD5STATUS", "NOMATCH"); + if (priority_jump || option_priority_jumping) { + if (ast_goto_if_exists(chan, chan->context, chan->exten, chan->priority + 101)) + if (option_debug > 2) + ast_log(LOG_DEBUG, "Can't jump to exten+101 (e%s,p%d), sorry\n", chan->exten,chan->priority+101); + } + LOCAL_USER_REMOVE(u); + return res; +} + +int unload_module(void) +{ + int res; + + res = ast_unregister_application(app_md5); + res |= ast_unregister_application(app_md5check); + + STANDARD_HANGUP_LOCALUSERS; + + return res; +} + +int load_module(void) +{ + int res; + + res = ast_register_application(app_md5check, md5check_exec, desc_md5check, synopsis_md5check); + res |= ast_register_application(app_md5, md5_exec, desc_md5, synopsis_md5); + + return res; +} + +char *description(void) +{ + return tdesc_md5; +} + +int usecount(void) +{ + int res; + STANDARD_USECOUNT(res); + return res; +} + +char *key() +{ + return ASTERISK_GPL_KEY; +} |