pbx.c

	res = ast_streamfile(chan, (char *)data, chan->language);
	if (!res) {
		res = ast_waitstream(chan, AST_DIGIT_ANY);
		ast_stopstream(chan);
	}
	return res;
}

static int pbx_builtin_atimeout(struct ast_channel *chan, void *data)
{
	int x = atoi((char *) data);
	/* Set the timeout for how long to wait between digits */
	ast_channel_setwhentohangup(chan,x);
	if (option_verbose > 2)
		ast_verbose( VERBOSE_PREFIX_3 "Set Absolute Timeout to %d\n", x);
	return 0;
}

static int pbx_builtin_rtimeout(struct ast_channel *chan, void *data)
{
	/* Set the timeout for how long to wait between digits */
	chan->pbx->rtimeout = atoi((char *)data);
	if (option_verbose > 2)
		ast_verbose( VERBOSE_PREFIX_3 "Set Response Timeout to %d\n", chan->pbx->rtimeout);
	return 0;
}

static int pbx_builtin_dtimeout(struct ast_channel *chan, void *data)
{
	/* Set the timeout for how long to wait between digits */
	chan->pbx->dtimeout = atoi((char *)data);
	if (option_verbose > 2)
		ast_verbose( VERBOSE_PREFIX_3 "Set Digit Timeout to %d\n", chan->pbx->dtimeout);
	return 0;
}

static int pbx_builtin_goto(struct ast_channel *chan, void *data)
{
	char *s;
	char *exten, *pri, *context;
	char *stringp=NULL;
	if (!data || !strlen(data)) {
		ast_log(LOG_WARNING, "Goto requires an argument (optional context|optional extension|priority)\n");
		return -1;
	}
	s = strdup((void *) data);
	stringp=s;
	context = strsep(&stringp, "|");
	exten = strsep(&stringp, "|");
	if (!exten) {
		/* Only a priority in this one */
		pri = context;
		exten = NULL;
		context = NULL;
	} else {
		pri = strsep(&stringp, "|");
		if (!pri) {
			/* Only an extension and priority in this one */
			pri = exten;
			exten = context;
			context = NULL;
		}
	}
	if (atoi(pri) < 0) {
		ast_log(LOG_WARNING, "Priority '%s' must be a number > 0\n", pri);
		free(s);
		return -1;
	}
	/* At this point we have a priority and maybe an extension and a context */
	chan->priority = atoi(pri) - 1;
	if (exten && strcasecmp(exten, "BYEXTENSION"))
		strncpy(chan->exten, exten, sizeof(chan->exten)-1);
	if (context)
		strncpy(chan->context, context, sizeof(chan->context)-1);
	if (option_verbose > 2)
		ast_verbose( VERBOSE_PREFIX_3 "Goto (%s,%s,%d)\n", chan->context,chan->exten, chan->priority+1);
	return 0;
}

char *pbx_builtin_getvar_helper(struct ast_channel *chan, char *name) {
	struct ast_var_t *variables;
	struct varshead *headp;

    if (chan)
        headp=&chan->varshead;
	else
		headp=&globals;

	if (name) {
		AST_LIST_TRAVERSE(headp,variables,entries) {
			if (!strcmp(name, ast_var_name(variables)))
				return ast_var_value(variables);
		}
		if (headp != &globals) {
			/* Check global variables if we haven't already */
			headp = &globals;
			AST_LIST_TRAVERSE(headp,variables,entries) {
				if (!strcmp(name, ast_var_name(variables)))
					return ast_var_value(variables);
			}
		}
	}
	return NULL;
}

void pbx_builtin_setvar_helper(struct ast_channel *chan, char *name, char *value) {
	struct ast_var_t *newvariable;
        struct varshead *headp;
    if (chan)
        headp=&chan->varshead;
	else
		headp=&globals;
                
	AST_LIST_TRAVERSE (headp,newvariable,entries) {
		if (strcasecmp(ast_var_name(newvariable),name)==0) {
			/* there is already such a variable, delete it */
			AST_LIST_REMOVE(headp,newvariable,ast_var_t,entries);
			ast_var_delete(newvariable);
			break;
		}
	} 
	
	if (value) {
		if ((option_verbose > 1) && (headp == &globals))
			ast_verbose(VERBOSE_PREFIX_3 "Setting global variable '%s' to '%s'\n",name, value);
		newvariable=ast_var_assign(name,value);	
		AST_LIST_INSERT_HEAD(headp,newvariable,entries);
	}
}

static int pbx_builtin_setvar(struct ast_channel *chan, void *data)
{
	char *name;
	char *value;
	char *stringp=NULL;
                
	if (!data || !strlen(data)) {
		ast_log(LOG_WARNING, "Ignoring, since there is no variable to set\n");
		return 0;
	}
	
	stringp=data;
	name=strsep(&stringp,"=");
	value=strsep(&stringp,"\0"); 
	
	pbx_builtin_setvar_helper(chan,name,value);
			
        return(0);
}

static int pbx_builtin_setglobalvar(struct ast_channel *chan, void *data)
{
	char *name;
	char *value;
	char *stringp=NULL;
                
	if (!data || !strlen(data)) {
		ast_log(LOG_WARNING, "Ignoring, since there is no variable to set\n");
		return 0;
	}
	
	stringp=data;
	name=strsep(&stringp,"=");
	value=strsep(&stringp,"\0"); 
	
	pbx_builtin_setvar_helper(NULL,name,value);
			
        return(0);
}


static int pbx_builtin_noop(struct ast_channel *chan, void *data)
{
	return 0;
}


void pbx_builtin_clear_globals(void)
{
	struct ast_var_t *vardata;
	while (!AST_LIST_EMPTY(&globals)) {
		vardata = AST_LIST_FIRST(&globals);
		AST_LIST_REMOVE_HEAD(&globals, entries);
		ast_var_delete(vardata);
	}
}

static int pbx_checkcondition(char *condition) {
	char *s;
	int ret;
	
	s=strdup(condition);
	
	ret=1;
	
	if ((strcasecmp(s,"0")) || (strlen(s)==0)) {
		ret=0;
	}
	
	free(s);
	return(ret);
}

static int pbx_builtin_gotoif(struct ast_channel *chan, void *data)
{
	char *condition,*branch1,*branch2,*branch;
	char *s;
	int rc;
	char *stringp=NULL;

	if (!data || !strlen(data)) {
		ast_log(LOG_WARNING, "Ignoring, since there is no variable to set\n");
		return 0;
	}
	
	s=strdup(data);
	stringp=s;
	condition=strsep(&stringp,"?");
	branch1=strsep(&stringp,":");
	branch2=strsep(&stringp,"");
	
	if (pbx_checkcondition(condition)) {
		branch=branch2;
	} else {
		branch=branch1;
	}
	
	if ((branch==NULL) || (strlen(branch)==0)) {
		ast_log(LOG_WARNING, "Not taking any branch\n");
		return(0);
	}
	
	rc=pbx_builtin_goto(chan,branch);
	free(s);
	return(rc);
}           

static int pbx_builtin_saynumber(struct ast_channel *chan, void *data)
{
	int res = 0;
	if (data && atoi((char *)data) )
		res = ast_say_number(chan, atoi((char *)data), "", chan->language);
	return res;
}

static int pbx_builtin_saydigits(struct ast_channel *chan, void *data)
{
	int res = 0;
	if (data && atoi((char *)data))
		res = ast_say_digits(chan, atoi((char *)data), "", chan->language);
	return res;
}
	
int load_pbx(void)
{
	int x;
	/* Initialize the PBX */
	if (option_verbose) {
		ast_verbose( "Asterisk PBX Core Initializing\n");
		ast_verbose( "Registering builtin applications:\n");
	}
	ast_cli_register(&show_applications_cli);
	ast_cli_register(&show_application_cli);
	ast_cli_register(&show_dialplan_cli);
	ast_cli_register(&show_switches_cli);
	for (x=0;x<sizeof(builtins) / sizeof(struct pbx_builtin); x++) {
		if (option_verbose)
			ast_verbose( VERBOSE_PREFIX_1 "[%s]\n", builtins[x].name);
		if (ast_register_application(builtins[x].name, builtins[x].execute, builtins[x].synopsis, builtins[x].description)) {
			ast_log(LOG_ERROR, "Unable to register builtin application '%s'\n", builtins[x].name);
			return -1;
		}
	}
	return 0;
}

/*
 * Lock context list functions ...
 */
int ast_lock_contexts()
{
	return ast_pthread_mutex_lock(&conlock);
}

int ast_unlock_contexts()
{
	return ast_pthread_mutex_unlock(&conlock);
}

/*
 * Lock context ...
 */
int ast_lock_context(struct ast_context *con)
{
	return ast_pthread_mutex_lock(&con->lock);
}

int ast_unlock_context(struct ast_context *con)
{
	return ast_pthread_mutex_unlock(&con->lock);
}

/*
 * Name functions ...
 */
char *ast_get_context_name(struct ast_context *con)
{
	return con ? con->name : NULL;
}

char *ast_get_extension_name(struct ast_exten *exten)
{
	return exten ? exten->exten : NULL;
}

char *ast_get_include_name(struct ast_include *inc)
{
	return inc ? inc->name : NULL;
}

char *ast_get_ignorepat_name(struct ast_ignorepat *ip)
{
	return ip ? ip->pattern : NULL;
}

int ast_get_extension_priority(struct ast_exten *exten)
{
	return exten ? exten->priority : -1;
}

/*
 * Registrar info functions ...
 */
char *ast_get_context_registrar(struct ast_context *c)
{
	return c ? c->registrar : NULL;
}

char *ast_get_extension_registrar(struct ast_exten *e)
{
	return e ? e->registrar : NULL;
}

char *ast_get_include_registrar(struct ast_include *i)
{
	return i ? i->registrar : NULL;
}

char *ast_get_ignorepat_registrar(struct ast_ignorepat *ip)
{
	return ip ? ip->registrar : NULL;
}

char *ast_get_extension_app(struct ast_exten *e)
{
	return e ? e->app : NULL;
}

void *ast_get_extension_app_data(struct ast_exten *e)
{
	return e ? e->data : NULL;
}

char *ast_get_switch_name(struct ast_sw *sw)
{
	return sw ? sw->name : NULL;
}

char *ast_get_switch_data(struct ast_sw *sw)
{
	return sw ? sw->data : NULL;
}

char *ast_get_switch_registrar(struct ast_sw *sw)
{
	return sw ? sw->registrar : NULL;
}

/*
 * Walking functions ...
 */
struct ast_context *ast_walk_contexts(struct ast_context *con)
{
	if (!con)
		return contexts;
	else
		return con->next;
}

struct ast_exten *ast_walk_context_extensions(struct ast_context *con,
	struct ast_exten *exten)
{
	if (!exten)
		return con ? con->root : NULL;
	else
		return exten->next;
}

struct ast_sw *ast_walk_context_switches(struct ast_context *con,
	struct ast_sw *sw)
{
	if (!sw)
		return con ? con->alts : NULL;
	else
		return sw->next;
}

struct ast_exten *ast_walk_extension_priorities(struct ast_exten *exten,
	struct ast_exten *priority)
{
	if (!priority)
		return exten;
	else
		return priority->peer;
}

struct ast_include *ast_walk_context_includes(struct ast_context *con,
	struct ast_include *inc)
{
	if (!inc)
		return con ? con->includes : NULL;
	else
		return inc->next;
}

struct ast_ignorepat *ast_walk_context_ignorepats(struct ast_context *con,
	struct ast_ignorepat *ip)
{
	if (!ip)
		return con ? con->ignorepats : NULL;
	else
		return ip->next;
}