script_cb.c
caf80ae6
 /*
  * $Id$
  *
  * Script callbacks -- they add the ability to register callback
  * functions which are always called when script for request
  * processing is entered or left
  *
  */
 
 #include <stdlib.h>
 #include "script_cb.h"
 #include "dprint.h"
 #include "error.h"
 
 static struct script_cb *pre_cb=0;
 static struct script_cb *post_cb=0;
 static unsigned int cb_id=0;
 
 int register_script_cb( cb_function f, callback_t t, void *param )
 {
 	struct script_cb *new_cb;
 
 	new_cb=malloc(sizeof(struct script_cb));
 	if (new_cb==0) {
 		LOG(L_ERR, "ERROR: register_script_cb: out of memory\n");
 		return E_OUT_OF_MEM;
 	}
 	new_cb->cbf=f;
 	new_cb->id=cb_id++;
 	new_cb->param=param;
 	/* insert into appropriate list */
 	if (t==PRE_SCRIPT_CB) {
 		new_cb->next=pre_cb;
 		pre_cb=new_cb;
 	} else if (t==POST_SCRIPT_CB) {
 		new_cb->next=post_cb;
 		post_cb=new_cb;
 	} else {
 		LOG(L_CRIT, "ERROR: register_script_cb: unknown CB type\n");
 		return E_BUG;
 	}
 	/* ok, callback installed */
 	return 1;
 }
 
 void exec_pre_cb( struct sip_msg *msg)
 {
 	struct script_cb *i;
 	for (i=pre_cb; i; i=i->next) i->cbf(msg, i->param);
 }
 
 void exec_post_cb( struct sip_msg *msg)
 {
 	struct script_cb *i;
 	for (i=post_cb; i; i=i->next) i->cbf(msg, i->param);
 }