Function __ref_script_route_by_name

route.c:197–255

static struct script_route_ref * __ref_script_route_by_name(char *name, int l,
					struct script_route *sr, int size, int type, int in_shm)
{
	struct script_route_ref *ref;
	unsigned int i;

	if (!in_shm) {
		/* first check if a reference to the route already exists */
		for( ref=sroute_refs ; ref ; ref=ref->next ) {
			if (ref->type==type && ref->name.len==l
			&& strncmp(ref->name.s,name,l)==0) {
				/* we found an already exists reference */
				ref->u.refcnt++;
				LM_DBG("returning existing %p [%.*s] with idx %d, "
					"ver/cnt %d\n", ref,
					ref->name.len, ref->name.s, ref->idx, ref->u.refcnt);
				/* note that the returned reference may point to
				 * no route, there is no guarantee to be a working one */
				return ref;
			}
		}

		/* no reference found, create a new one */
		ref = pkg_malloc( sizeof *ref + l + 1 );
	} else {
		ref = shm_malloc( sizeof *ref + l + 1 );
	}

	if (ref==NULL) {
		LM_ERR("failed to allocate new sroute reference\n");
		return NULL;
	}
	ref->name.s = (char*)(ref+1);
	ref->name.len = l;
	memcpy( ref->name.s, name, l);
	ref->name.s[l] = 0; // make it NULL terminated also
	ref->type = type;
	ref->idx = -1;

	/* see if we find its idx */
	for( i=1 ; i<size && sr[i].name ; i++ ) {
		if (strcmp(sr[i].name,ref->name.s)==0 )
			ref->idx = i;
	}

	if (in_shm) {
		ref->u.version = sroutes->version;
		ref->next = NULL;
	} else {
		ref->u.refcnt = 1;
		/* link it */
		ref->next = sroute_refs;
		sroute_refs = ref;
	}

	LM_DBG("returning new %p [%.*s] with idx %d, ver/xnt %d\n", ref,
		ref->name.len, ref->name.s, ref->idx, ref->u.version);
	return ref;