Function clen_builder

msg_translator.c:321–351

char* clen_builder(struct sip_msg* msg, int *clen_len, int diff)
{
	char *buf, * value_s;
	int len, value, value_len;
	str body;

	if ( (get_body(msg,&body)!=0) ) {
		ser_error=E_BAD_REQ;
		LM_ERR("no message body found (missing crlf?)");
		return 0;
	}

	/* with SDP ops, the body len is fully known (ignore diff) */
	value = body.len + (have_sdp_ops(msg) ? 0 : diff);
	value_s=int2str(value, &value_len);
	LM_DBG("content-length: %d (%s)\n", value, value_s);

	len=CONTENT_LENGTH_LEN+value_len+CRLF_LEN;
	buf=pkg_malloc(sizeof(char)*(len+1));
	if (buf==0){
		ser_error=E_OUT_OF_MEM;
		LM_ERR("out of pkg memory\n");
		return 0;
	}
	memcpy(buf, CONTENT_LENGTH, CONTENT_LENGTH_LEN);
	memcpy(buf+CONTENT_LENGTH_LEN, value_s, value_len);
	memcpy(buf+CONTENT_LENGTH_LEN+value_len, CRLF, CRLF_LEN);
	buf[len]=0; /* null terminate it */
	*clen_len=len;
	return buf;
}