/**
* Find a device from the controlpoint by the UDN of the device.
*
* \param ctrlPoint Controlpoint in question
* \param udn Type of the device
*
*/
mUpnpDevice *mupnp_controlpoint_getdevicebyudn(mUpnpControlPoint *ctrlPoint,
char *udn)
{
mUpnpDevice *dev = NULL;
mUpnpDevice *childDev = NULL;
mupnp_log_debug_l4("Entering...\n");
if (mupnp_strlen(udn) <= 0 || ctrlPoint == NULL)
{
return NULL;
}
for (dev = mupnp_controlpoint_getdevices(ctrlPoint);
dev != NULL;
dev = mupnp_device_next(dev))
{
if (mupnp_strcmp(mupnp_device_getudn(dev), udn) == 0)
{
return dev;
}
childDev = mupnp_device_getdevicebyudn(dev, udn);
if (childDev != NULL)
{
return childDev;
}
}
mupnp_log_debug_l4("Leaving...\n");
return NULL;
}
/**
* Stop the control point. Stops sending/receiveing/responding to any messages.
*
* @param ctrlPoint The control point to stop
*
* @return true if successful; otherwise false
*
*/
bool mupnp_controlpoint_stop(mUpnpControlPoint *ctrlPoint)
{
mUpnpDevice *dev = NULL;
mUpnpSSDPServerList *ssdpServerList;
mUpnpSSDPResponseServerList *ssdpResServerList;
mUpnpHttpServerList *httpServerList;
const char *udn = NULL;
MUPNP_DEVICE_LISTENER listener = mupnp_controlpoint_getdevicelistener(ctrlPoint);
mupnp_log_debug_l4("Entering...\n");
/* Stop expiration handling */
mupnp_thread_stop_with_cond(ctrlPoint->expThread, ctrlPoint->expCond);
mupnp_log_debug_s("Expiration thread stopped.\n");
/**** SSDP Server ****/
ssdpServerList = mupnp_controlpoint_getssdpserverlist(ctrlPoint);
mupnp_log_debug_s("Stopping ssdp servers.\n");
mupnp_ssdp_serverlist_setlistener(ssdpServerList, NULL);
mupnp_ssdp_serverlist_setuserdata(ssdpServerList, NULL);
mupnp_ssdp_serverlist_stop(ssdpServerList);
mupnp_log_debug_s("Done\n");
mupnp_ssdp_serverlist_close(ssdpServerList);
mupnp_ssdp_serverlist_clear(ssdpServerList);
/**** SSDP Response Server ****/
ssdpResServerList = mupnp_controlpoint_getssdpresponseserverlist(ctrlPoint);
mupnp_log_debug_s("Stopping ssdp response servers.\n");
mupnp_ssdpresponse_serverlist_setlistener(ssdpResServerList, NULL);
mupnp_ssdpresponse_serverlist_setuserdata(ssdpResServerList, NULL);
mupnp_ssdpresponse_serverlist_stop(ssdpResServerList);
mupnp_log_debug_s("Done\n");
mupnp_ssdpresponse_serverlist_close(ssdpResServerList);
mupnp_ssdpresponse_serverlist_clear(ssdpResServerList);
/**** HTTP Server ****/
httpServerList = mupnp_controlpoint_gethttpserverlist(ctrlPoint);
mupnp_log_debug_s("Stopping http servers.\n");
mupnp_http_serverlist_setlistener(httpServerList, NULL);
mupnp_http_serverlist_stop(httpServerList);
mupnp_log_debug_s("Done\n");
mupnp_http_serverlist_close(httpServerList);
mupnp_http_serverlist_clear(httpServerList);
mupnp_controlpoint_lock(ctrlPoint);
mupnp_log_debug_s("Got controlpoint lock.\n");
/* Unsubscribe from all services */
for (dev = mupnp_controlpoint_getdevices(ctrlPoint);
dev != NULL;
dev = mupnp_device_next(dev))
{
udn = mupnp_device_getudn(dev);
/* Call device listener for each device */
if (udn != NULL && listener != NULL)
{
mupnp_controlpoint_unlock(ctrlPoint);
listener(ctrlPoint, udn, mUpnpDeviceStatusRemoved);
mupnp_controlpoint_lock(ctrlPoint);
}
}
/* Empty device cache */
mupnp_devicelist_clear(ctrlPoint->deviceList);
mupnp_log_debug_s("Device list cleared.\n");
mupnp_controlpoint_unlock(ctrlPoint);
mupnp_log_debug_l4("Leaving...\n");
return true;
}
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");
}
