示例#1
0
void mupnp_service_ssdpmessagereceived(mUpnpService *service, mUpnpSSDPPacket *ssdpPkt)
{
    mUpnpDevice *dev;
    const char *ssdpST;
    const char *serviceType;
    char serviceNT[MUPNP_SSDP_HEADER_LINE_MAXSIZE];
    char serviceUSN[MUPNP_SSDP_HEADER_LINE_MAXSIZE];

    mupnp_log_debug_l4("Entering...\n");

    ssdpST = mupnp_ssdp_packet_getst(ssdpPkt);
    if (mupnp_strlen(ssdpST) <= 0)
        return;

    dev = mupnp_service_getdevice(service);

    mupnp_service_getnotifyservicetypent(service, serviceNT, sizeof(serviceNT));
    mupnp_service_getnotifyservicetypeusn(service, serviceUSN, sizeof(serviceUSN));

    if (mupnp_st_isalldevice(ssdpST) == true) {
        mupnp_device_postsearchresponse(dev, ssdpPkt, serviceNT, serviceUSN);
    }
    else if (mupnp_st_isurn(ssdpST)  == true) {
        serviceType = mupnp_service_getservicetype(service);
        if (mupnp_streq(ssdpST, serviceType) == true)
            mupnp_device_postsearchresponse(dev, ssdpPkt, serviceType, serviceUSN);
    }

    mupnp_log_debug_l4("Leaving...\n");
}
示例#2
0
void mupnp_device_ssdpmessagereceived(mUpnpDevice *dev, mUpnpSSDPPacket *ssdpPkt, int filter)
{
	BOOL isRootDev;
	const char *ssdpST;
	const char *devUDN, *devType;
	char ssdpMsg[MUPNP_SSDP_HEADER_LINE_MAXSIZE];
	char deviceUSN[MUPNP_SSDP_HEADER_LINE_MAXSIZE];
#if defined WINCE
	size_t n;
#else
	int n;
#endif
	mUpnpService *service;
	mUpnpDevice *childDev;
	const char *ssdpMXString;
	int ssdpMX;
	const char *ssdpTargetAddr;

	mupnp_log_debug_l4("Entering...\n");

	ssdpMXString = mupnp_http_headerlist_getvalue(ssdpPkt->headerList, CG_HTTP_MX);
	ssdpST = mupnp_ssdp_packet_getst(ssdpPkt);

	/* Check if this ssdp packet has already been checked + filtered */
	if (filter)
	{
		
		/****************************************
		 * Request line
		 * Check the request line for errors, this is not ideal as it currently only
		 * checks for the presence of the strings and not the order.
		 ***************************************/
		/**** check for M-SEARCH and return if not found ****/
		if (mupnp_strstr(mupnp_string_getvalue(ssdpPkt->dgmPkt->data), CG_HTTP_MSEARCH) < 0)
			return;
		/**** check for * and return if not found ****/
		if (mupnp_strstr(mupnp_string_getvalue(ssdpPkt->dgmPkt->data), "*") < 0)
			return;
		/**** check HTTP version and return if not found ****/
		if (mupnp_strstr(mupnp_string_getvalue(ssdpPkt->dgmPkt->data),  CG_HTTP_VER11) < 0)
			return;

		/****************************************
		 * check HOST header, should always be 239.255.255.250:1900, return if incorrect
		 ***************************************/
		ssdpTargetAddr = mupnp_ssdp_packet_gethost(ssdpPkt);
		if (mupnp_strcmp(ssdpTargetAddr, MUPNP_SSDP_MULTICAST_ADDRESS) != 0 && !mupnp_net_isipv6address(ssdpTargetAddr) )
			return;

		/****************************************
		 * check MAN header, return if incorrect
		 ***************************************/
		if (mupnp_ssdp_packet_isdiscover(ssdpPkt) == FALSE)
			return;

		/****************************************
		 * check MX header, return if incorrect
		 ***************************************/
		if (ssdpMXString == NULL || mupnp_strlen(ssdpMXString)==0)
			/* return if the MX value does not exist or is empty */
			return;
		/* check if MX value is not an integer */
		for (n=0; n<strlen(ssdpMXString); n++) {
			if (isdigit(ssdpMXString[n]) == 0)
				/* MX value contains a non-digit so is invalid */
				return;
		}

		/****************************************
		 * check ST header and if empty return
		 ***************************************/
		if (mupnp_strlen(ssdpST) <= 0)
			return;

		/* Check if we have received this search recently
		 * and ignore duplicates. */
		if ( filter_duplicate_m_search(ssdpPkt) )
			return;

		ssdpMX = mupnp_ssdp_packet_getmx(ssdpPkt);
		mupnp_log_debug("Sleeping for a while... (MX:%d)\n", ssdpMX);
		mupnp_waitrandom((ssdpMX*1000)/4);
	}

	isRootDev = mupnp_device_isrootdevice(dev);
	
	if (mupnp_st_isalldevice(ssdpST) == TRUE) {
		/* for root device only */
		if (isRootDev == TRUE) {
			mupnp_device_getnotifydevicent(dev, ssdpMsg, sizeof(ssdpMsg));
			mupnp_device_getnotifydeviceusn(dev, deviceUSN, sizeof(deviceUSN));
			mupnp_device_postsearchresponse(dev, ssdpPkt, ssdpMsg, deviceUSN);
		}
		/* for all devices send */
		/* device type : device version */
		mupnp_device_getnotifydevicetypent(dev, ssdpMsg, sizeof(ssdpMsg));
		mupnp_device_getnotifydevicetypeusn(dev, deviceUSN, sizeof(deviceUSN));
		mupnp_device_postsearchresponse(dev, ssdpPkt, ssdpMsg, deviceUSN);
		/* device UUID */
		mupnp_device_postsearchresponse(dev, ssdpPkt, mupnp_device_getudn(dev), mupnp_device_getudn(dev));
	}
	else if (mupnp_st_isrootdevice(ssdpST)  == TRUE) {
		if (isRootDev == TRUE) {
			mupnp_device_getnotifydeviceusn(dev, deviceUSN, sizeof(deviceUSN));
			mupnp_device_postsearchresponse(dev, ssdpPkt, MUPNP_ST_ROOT_DEVICE, deviceUSN);
		}
	}
	else if (mupnp_st_isuuiddevice(ssdpST)  == TRUE) {
		devUDN = mupnp_device_getudn(dev);
		if (mupnp_streq(ssdpST, devUDN) == TRUE)
			mupnp_device_postsearchresponse(dev, ssdpPkt, devUDN, devUDN);
	}
	else if (mupnp_st_isurn(ssdpST)  == TRUE) {
		devType = mupnp_device_getdevicetype(dev);
		if (mupnp_streq(ssdpST, devType) == TRUE) {
			mupnp_device_getnotifydevicetypeusn(dev, deviceUSN, sizeof(deviceUSN));
			mupnp_device_postsearchresponse(dev, ssdpPkt, devType, deviceUSN);
		}
	}

	for (service=mupnp_device_getservices(dev); service != NULL; service = mupnp_service_next(service))
		mupnp_service_ssdpmessagereceived(service, ssdpPkt);

	for (childDev = mupnp_device_getdevices(dev); childDev != NULL; childDev = mupnp_device_next(childDev))
		mupnp_device_ssdpmessagereceived(childDev, ssdpPkt, FALSE);
	

	mupnp_log_debug_l4("Leaving...\n");
}