Function bin_pop_str

bin_interface.c:332–362

* pops an str from the current position in the packet * @info: pointer to store the result * * @return: * 0 (success): info retrieved * 1 (success): nothing returned, all data has been consumed! * < 0: error * * Note: The pointer returned in @info str is only valid for the duration of * the callback. Don't forget to copy the info into a safe buffer! */

 *       the callback. Don't forget to copy the info into a safe buffer!
 */
int bin_pop_str(bin_packet_t *packet, str *info)
{
	if (packet->front_pointer - packet->buffer.s == packet->buffer.len)
		return 1;

	if (packet->front_pointer - packet->buffer.s > packet->buffer.len ||
	    packet->front_pointer - packet->buffer.s + LEN_FIELD_SIZE > packet->buffer.len)
		goto error;

	info->len = 0;
	memcpy(&info->len, packet->front_pointer, LEN_FIELD_SIZE);
	packet->front_pointer += LEN_FIELD_SIZE;

	if (packet->front_pointer - packet->buffer.s + info->len > packet->buffer.len)
		goto error;

	if (info->len == 0)
		info->s = NULL;
	else
		info->s = packet->front_pointer;

	packet->front_pointer += info->len;

	LM_DBG("Popped: '%.*s' [%d]\n", info->len, info->s, info->len);

	return 0;

error:
	LM_ERR("Receive binary packet buffer overflow\n");
	return -1;
}

/*
 * pops an integer value from the current position in the buffer