Function w_sip_validate

modules/sipmsgops/sipmsgops.c:1656–1959

}

static int w_sip_validate(struct sip_msg *msg, void *_flags, pv_spec_t* err_txt)
{
	unsigned int hdrs_len, status_code;
	unsigned long flags = (unsigned long)_flags;
	int method;
	str body;
	struct sip_uri *p_uri;
	struct cseq_body * cbody;
	pv_value_t pv_val;
	char reason[MAX_REASON];
	int ret = -SV_GENERIC_FAILURE;

	if (!msg) {
		strcpy(reason, "no message object");
		ret = SV_NO_MSG;
		goto failed;
	}

	/* try to check the whole SIP msg */
	if (parse_headers(msg, HDR_EOH_F, 0) < 0) {
		strcpy(reason, "message parsing failed");
		ret = SV_HDR_PARSE_ERROR;
		goto failed;
	}

	/* any message has to have a call-id */
	if (!msg->callid) {
		strcpy(reason, "message doesn't have callid");
		ret = SV_NO_CALLID;
		goto failed;
	}

	/* content length should be present if protocol is not UDP */
	if (msg->rcv.proto != PROTO_UDP && !msg->content_length) {
		snprintf(reason, MAX_REASON-1,
			"message doesn't have Content Length header for proto %d",
			msg->rcv.proto);
		ret = SV_NO_CONTENT_LENGTH;
		goto failed;
	}

	body.s = NULL;
	body.len = 0;

	/* if not CANCEL, check if it has body */
	if (msg->first_line.type!=SIP_REQUEST || msg->REQ_METHOD!=METHOD_CANCEL) {

		if (get_body( msg, &body)!=0) {
			strcpy(reason, "invalid parsing");
			ret = SV_HDR_PARSE_ERROR;
			goto failed;
		}

		if (get_content_length(msg) != body.len) {
			snprintf(reason, MAX_REASON-1, "invalid body - content "
				"length %ld different than actual body %d",
				get_content_length(msg), body.len);
			ret = SV_INVALID_CONTENT_LENGTH;