Function get_uri_hash_keys

modules/dispatcher/dispatch.c:1341–1389

* gets the part of the uri we will use as a key for hashing * params: key1 - will be filled with first part of the key * (uri user or "" if no user) * key2 - will be filled with the second part of the key * (uri host:port) * uri - str with the whole uri * parsed_uri - struct sip_uri pointer with the pa

 * returns: -1 on error, 0 on success
 */
static inline int get_uri_hash_keys(str* key1, str* key2,
							str* uri, struct sip_uri* parsed_uri, int flags)
{
	struct sip_uri tmp_p_uri; /* used only if parsed_uri==0 */
	unsigned short proto;

	if (parsed_uri==0)
	{
		if (parse_uri(uri->s, uri->len, &tmp_p_uri)<0)
		{
			LM_ERR("invalid uri %.*s\n", uri->len, uri->len?uri->s:"");
			goto error;
		}
		parsed_uri=&tmp_p_uri;
	}
	/* uri sanity checks */
	if (parsed_uri->host.s==0)
	{
			LM_ERR("invalid uri, no host present: %.*s\n",
					uri->len, uri->len?uri->s:"");
			goto error;
	}

	/* we want: user@host:port if port is not the defaut one
	 *          user@host if port is the default one
	 *          user if the user flag is set*/
	*key1=parsed_uri->user;
	key2->s=0;
	key2->len=0;
	if (!(flags & DS_HASH_USER_ONLY))
	{	/* key2=host */
		*key2=parsed_uri->host;
		/* add port if needed */
		if (parsed_uri->port.s!=0)
		{ /* uri has a port */
			/* skip port if the default one ( first extract proto from URI) */
			if ( get_uri_port(parsed_uri, &proto) &&
			parsed_uri->port_no != protos[proto].default_port )
				key2->len+=parsed_uri->port.len+1 /* ':' */;
		}
	}
	if (key1->s==0)
	{
		LM_WARN("empty username in: %.*s\n", uri->len, uri->len?uri->s:"");
	}
	return 0;
error:
	return -1;
}