mirror of
https://github.com/asterisk/asterisk.git
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mer feb 12 14:56:57 CET 2003
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@612 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Matteo Brancaleoni
234
apps/app_macro.c
Executable file
234
apps/app_macro.c
Executable file
@@ -0,0 +1,234 @@
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/*
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* Asterisk -- A telephony toolkit for Linux.
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*
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* Macro Implementation
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*
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* Copyright (C) 2003, Digium
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*
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* Mark Spencer <markster@digium.com>
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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
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*/
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#include <asterisk/file.h>
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#include <asterisk/logger.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/options.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdlib.h>
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#include <pthread.h>
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#define MAX_ARGS 80
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static char *tdesc = "Extension Macros";
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static char *descrip =
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" Macro(macroname|arg1|arg2...): Executes a macro using the context\n"
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"'macro-<macroname>', jumping to the 's' extension of that context and\n"
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"executing each step, then returning when the steps end. The calling\n"
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"extension, context, and priority are stored in ${MACRO_EXTEN}, \n"
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"${MACRO_CONTEXT} and ${MACRO_PRIORITY} respectively. Arguments become\n"
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"${ARG1}, ${ARG2}, etc in the macro context. Macro returns -1 if\n"
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"any step in the macro returns -1, and 0 otherwise. If you Goto out\n"
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"of the Macro context, the Macro will terminate and control will be return\n"
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"at the location of the Goto. Otherwise if ${MACRO_OFFSET} is set at\n"
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"termination, Macro will attempt to continue at priority\n"
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"MACRO_OFFSET + N + 1 if such a step exists, and N + 1 otherwise.\n";
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static char *app = "Macro";
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static char *synopsis = "Macro Implementation";
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STANDARD_LOCAL_USER;
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LOCAL_USER_DECL;
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static int macro_exec(struct ast_channel *chan, void *data)
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{
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char tmp[256] = "";
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char *cur, *rest;
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char *macro;
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char fullmacro[80];
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char varname[80];
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char *oldargs[MAX_ARGS + 1] = { NULL, };
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int argc, x;
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int res;
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char oldexten[256]="";
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int oldpriority;
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char pc[80];
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char oldcontext[256] = "";
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char *offsets;
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int offset;
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char *save_macro_exten;
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char *save_macro_context;
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char *save_macro_priority;
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char *save_macro_offset;
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if (!data || !strlen(data)) {
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ast_log(LOG_WARNING, "Invalid Macro incantation\n");
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return 0;
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}
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strncpy(tmp, data, sizeof(tmp) - 1);
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rest = tmp;
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macro = strsep(&rest, "|");
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if (!macro || !strlen(macro)) {
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ast_log(LOG_WARNING, "Invalid macro name specified\n");
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return 0;
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}
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snprintf(fullmacro, sizeof(fullmacro), "macro-%s", macro);
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if (!ast_exists_extension(chan, fullmacro, "s", 1, chan->callerid)) {
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if (!ast_context_find(fullmacro))
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ast_log(LOG_WARNING, "No such context '%s' for macro '%s'\n", fullmacro, macro);
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else
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ast_log(LOG_WARNING, "Context '%s' for macro '%s' lacks 's' extension, priority 1\n", fullmacro, macro);
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return 0;
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}
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/* Save old info */
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oldpriority = chan->priority;
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strncpy(oldexten, chan->exten, sizeof(oldexten) - 1);
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strncpy(oldcontext, chan->context, sizeof(oldcontext) - 1);
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argc = 1;
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/* Save old macro variables */
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save_macro_exten = pbx_builtin_getvar_helper(chan, "MACRO_EXTEN");
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if (save_macro_exten) save_macro_exten = strdup(save_macro_exten);
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pbx_builtin_setvar_helper(chan, "MACRO_EXTEN", oldexten);
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save_macro_context = pbx_builtin_getvar_helper(chan, "MACRO_CONTEXT");
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if (save_macro_context) save_macro_context = strdup(save_macro_context);
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pbx_builtin_setvar_helper(chan, "MACRO_CONTEXT", oldcontext);
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save_macro_priority = pbx_builtin_getvar_helper(chan, "MACRO_PRIORITY");
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if (save_macro_priority) save_macro_priority = strdup(save_macro_priority);
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snprintf(pc, sizeof(pc), "%d", oldpriority);
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pbx_builtin_setvar_helper(chan, "MACRO_PRIORITY", pc);
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save_macro_offset = pbx_builtin_getvar_helper(chan, "MACRO_OFFSET");
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if (save_macro_offset) save_macro_offset = strdup(save_macro_offset);
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pbx_builtin_setvar_helper(chan, "MACRO_OFFSET", NULL);
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/* Setup environment for new run */
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strcpy(chan->exten, "s");
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strncpy(chan->context, fullmacro, sizeof(chan->context));
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chan->priority = 1;
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while((cur = strsep(&rest, "|")) && (argc < MAX_ARGS)) {
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/* Save copy of old arguments if we're overwriting some, otherwise
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let them pass through to the other macro */
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oldargs[argc] = pbx_builtin_getvar_helper(chan, varname);
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if (oldargs[argc])
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oldargs[argc] = strdup(oldargs[argc]);
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snprintf(varname, sizeof(varname), "ARG%d", argc);
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pbx_builtin_setvar_helper(chan, varname, cur);
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argc++;
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}
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while(ast_exists_extension(chan, chan->context, chan->exten, chan->priority, chan->callerid)) {
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if ((res = ast_spawn_extension(chan, chan->context, chan->exten, chan->priority, chan->callerid))) {
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/* Something bad happened, or a hangup has been requested. */
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if (((res >= '0') && (res <= '9')) || ((res >= 'A') && (res <= 'F'))) {
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/* Just return result as to the previous application as if it had been dialed */
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ast_log(LOG_DEBUG, "Oooh, got something to jump out with ('%c')!\n", res);
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break;
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}
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switch(res) {
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case AST_PBX_KEEPALIVE:
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if (option_debug)
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ast_log(LOG_DEBUG, "Spawn extension (%s,%s,%d) exited KEEPALIVE in macro %s on '%s'\n", chan->context, chan->exten, chan->priority, macro, chan->name);
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else if (option_verbose > 1)
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ast_verbose( VERBOSE_PREFIX_2 "Spawn extension (%s, %s, %d) exited KEEPALIVE in macro '%s' on '%s'\n", chan->context, chan->exten, chan->priority, macro, chan->name);
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goto out;
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break;
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default:
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if (option_debug)
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ast_log(LOG_DEBUG, "Spawn extension (%s,%s,%d) exited non-zero on '%s' in macro '%s'\n", chan->context, chan->exten, chan->priority, chan->name, macro);
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else if (option_verbose > 1)
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ast_verbose( VERBOSE_PREFIX_2 "Spawn extension (%s, %s, %d) exited non-zero on '%s' in macro '%s'\n", chan->context, chan->exten, chan->priority, chan->name, macro);
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goto out;
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}
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}
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if (strcasecmp(chan->context, fullmacro)) {
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if (option_verbose > 1)
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ast_verbose(VERBOSE_PREFIX_2 "Channel '%s' jumping out of macro '%s'\n", chan->name, macro);
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break;
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}
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if (chan->_softhangup) {
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ast_log(LOG_DEBUG, "Extension %s, priority %d returned normally even though call was hung up\n",
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chan->exten, chan->priority);
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goto out;
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}
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chan->priority++;
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}
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out:
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for (x=1;x<argc;x++) {
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/* Restore old arguments and delete ours */
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snprintf(varname, sizeof(varname), "ARG%d", x);
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if (oldargs[x]) {
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pbx_builtin_setvar_helper(chan, varname, oldargs[x]);
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free(oldargs[x]);
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} else {
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pbx_builtin_setvar_helper(chan, varname, NULL);
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}
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}
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/* Restore macro variables */
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pbx_builtin_setvar_helper(chan, "MACRO_EXTEN", save_macro_exten);
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if (save_macro_exten) free(save_macro_exten);
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pbx_builtin_setvar_helper(chan, "MACRO_CONTEXT", save_macro_context);
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if (save_macro_context) free(save_macro_context);
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pbx_builtin_setvar_helper(chan, "MACRO_PRIORITY", save_macro_priority);
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if (save_macro_priority) free(save_macro_priority);
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if (!strcasecmp(chan->context, fullmacro)) {
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/* If we're leaving the macro normally, restore original information */
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chan->priority = oldpriority;
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strncpy(chan->exten, oldexten, sizeof(chan->exten) - 1);
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strncpy(chan->context, oldcontext, sizeof(chan->context) - 1);
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if ((offsets = pbx_builtin_getvar_helper(chan, "MACRO_OFFSET"))) {
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/* Handle macro offset if it's set by checking the availability of step n + offset + 1, otherwise continue
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normally if there is any problem */
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if (sscanf(offsets, "%d", &offset) == 1) {
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if (ast_exists_extension(chan, chan->context, chan->exten, chan->priority + offset + 1, chan->callerid)) {
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chan->priority += offset;
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}
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}
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}
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}
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pbx_builtin_setvar_helper(chan, "MACRO_OFFSET", save_macro_offset);
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if (save_macro_offset) free(save_macro_offset);
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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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STANDARD_HANGUP_LOCALUSERS;
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return ast_unregister_application(app);
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}
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int load_module(void)
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{
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return ast_register_application(app, macro_exec, synopsis, descrip);
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}
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char *description(void)
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{
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return tdesc;
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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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