/**
* Find a device from the controlpoint by the UDN of the device.
*
* \param ctrlPoint Controlpoint in question
* \param udn Type of the device
*
*/
CgUpnpDevice *cg_upnp_controlpoint_getdevicebyudn(CgUpnpControlPoint *ctrlPoint,
char *udn)
{
CgUpnpDevice *dev = NULL;
CgUpnpDevice *childDev = NULL;
cg_log_debug_l4("Entering...\n");
if (cg_strlen(udn) <= 0 || ctrlPoint == NULL)
{
return NULL;
}
for (dev = cg_upnp_controlpoint_getdevices(ctrlPoint);
dev != NULL;
dev = cg_upnp_device_next(dev))
{
if (cg_strcmp(cg_upnp_device_getudn(dev), udn) == 0)
{
return dev;
}
childDev = cg_upnp_device_getdevicebyudn(dev, udn);
if (childDev != NULL)
{
return childDev;
}
}
cg_log_debug_l4("Leaving...\n");
return NULL;
}
void cg_upnp_device_ssdpmessagereceived(CgUpnpDevice *dev, CgUpnpSSDPPacket *ssdpPkt, int filter)
{
BOOL isRootDev;
char *ssdpST;
char *devUDN, *devType;
char ssdpMsg[CG_UPNP_SSDP_HEADER_LINE_MAXSIZE];
char deviceUSN[CG_UPNP_SSDP_HEADER_LINE_MAXSIZE];
#if defined WINCE
size_t n;
#else
int n;
#endif
CgUpnpService *service;
CgUpnpDevice *childDev;
char *ssdpMXString;
int ssdpMX;
cg_log_debug_l4("Entering...\n");
ssdpMXString = cg_http_headerlist_getvalue(ssdpPkt->headerList, CG_HTTP_MX);
ssdpST = cg_upnp_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 (cg_strstr(cg_string_getvalue(ssdpPkt->dgmPkt->data), CG_HTTP_MSEARCH) < 0)
return;
/**** check for * and return if not found ****/
if (cg_strstr(cg_string_getvalue(ssdpPkt->dgmPkt->data), "*") < 0)
return;
/**** check HTTP version and return if not found ****/
if (cg_strstr(cg_string_getvalue(ssdpPkt->dgmPkt->data), CG_HTTP_VER11) < 0)
return;
/****************************************
* check HOST header, should always be 239.255.255.250:1900, return if incorrect
***************************************/
if (cg_strcmp(cg_upnp_ssdp_packet_gethost(ssdpPkt), CG_UPNP_SSDP_MULTICAST_ADDRESS) != 0)
return;
/****************************************
* check MAN header, return if incorrect
***************************************/
if (cg_upnp_ssdp_packet_isdiscover(ssdpPkt) == FALSE)
return;
/****************************************
* check MX header, return if incorrect
***************************************/
if (ssdpMXString == NULL || cg_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 (cg_strlen(ssdpST) <= 0)
return;
/* Check if we have received this search recently
* and ignore duplicates. */
if ( filter_duplicate_m_search(ssdpPkt) )
return;
ssdpMX = cg_upnp_ssdp_packet_getmx(ssdpPkt);
cg_log_debug("Sleeping for a while... (MX:%d)\n", ssdpMX);
cg_waitrandom((ssdpMX*1000)/4);
}
isRootDev = cg_upnp_device_isrootdevice(dev);
if (cg_upnp_st_isalldevice(ssdpST) == TRUE) {
/* for root device only */
if (isRootDev == TRUE) {
cg_upnp_device_getnotifydevicent(dev, ssdpMsg, sizeof(ssdpMsg));
cg_upnp_device_getnotifydeviceusn(dev, deviceUSN, sizeof(deviceUSN));
cg_upnp_device_postsearchresponse(dev, ssdpPkt, ssdpMsg, deviceUSN);
}
/* for all devices send */
/* device type : device version */
cg_upnp_device_getnotifydevicetypent(dev, ssdpMsg, sizeof(ssdpMsg));
cg_upnp_device_getnotifydevicetypeusn(dev, deviceUSN, sizeof(deviceUSN));
cg_upnp_device_postsearchresponse(dev, ssdpPkt, ssdpMsg, deviceUSN);
/* device UUID */
cg_upnp_device_postsearchresponse(dev, ssdpPkt, cg_upnp_device_getudn(dev), cg_upnp_device_getudn(dev));
}
else if (cg_upnp_st_isrootdevice(ssdpST) == TRUE) {
if (isRootDev == TRUE) {
cg_upnp_device_getnotifydeviceusn(dev, deviceUSN, sizeof(deviceUSN));
cg_upnp_device_postsearchresponse(dev, ssdpPkt, CG_UPNP_ST_ROOT_DEVICE, deviceUSN);
}
}
else if (cg_upnp_st_isuuiddevice(ssdpST) == TRUE) {
devUDN = cg_upnp_device_getudn(dev);
if (cg_streq(ssdpST, devUDN) == TRUE)
cg_upnp_device_postsearchresponse(dev, ssdpPkt, devUDN, devUDN);
}
else if (cg_upnp_st_isurn(ssdpST) == TRUE) {
devType = cg_upnp_device_getdevicetype(dev);
if (cg_streq(ssdpST, devType) == TRUE) {
cg_upnp_device_getnotifydevicetypeusn(dev, deviceUSN, sizeof(deviceUSN));
cg_upnp_device_postsearchresponse(dev, ssdpPkt, devType, deviceUSN);
}
}
for (service=cg_upnp_device_getservices(dev); service != NULL; service = cg_upnp_service_next(service))
cg_upnp_service_ssdpmessagereceived(service, ssdpPkt);
for (childDev = cg_upnp_device_getdevices(dev); childDev != NULL; childDev = cg_upnp_device_next(childDev))
cg_upnp_device_ssdpmessagereceived(childDev, ssdpPkt, FALSE);
cg_log_debug_l4("Leaving...\n");
}
/**
* 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 cg_upnp_controlpoint_stop(CgUpnpControlPoint *ctrlPoint)
{
CgUpnpDevice *dev = NULL;
CgUpnpSSDPServerList *ssdpServerList;
CgUpnpSSDPResponseServerList *ssdpResServerList;
CgHttpServerList *httpServerList;
const char *udn = NULL;
CG_UPNP_DEVICE_LISTENER listener = cg_upnp_controlpoint_getdevicelistener(ctrlPoint);
cg_log_debug_l4("Entering...\n");
/* Stop expiration handling */
cg_thread_stop_with_cond(ctrlPoint->expThread, ctrlPoint->expCond);
cg_log_debug_s("Expiration thread stopped.\n");
/**** SSDP Server ****/
ssdpServerList = cg_upnp_controlpoint_getssdpserverlist(ctrlPoint);
cg_log_debug_s("Stopping ssdp servers.\n");
cg_upnp_ssdp_serverlist_stop(ssdpServerList);
cg_log_debug_s("Done\n");
cg_upnp_ssdp_serverlist_close(ssdpServerList);
cg_upnp_ssdp_serverlist_clear(ssdpServerList);
/**** SSDP Response Server ****/
ssdpResServerList = cg_upnp_controlpoint_getssdpresponseserverlist(ctrlPoint);
cg_log_debug_s("Stopping ssdp response servers.\n");
cg_upnp_ssdpresponse_serverlist_stop(ssdpResServerList);
cg_log_debug_s("Done\n");
cg_upnp_ssdpresponse_serverlist_close(ssdpResServerList);
cg_upnp_ssdpresponse_serverlist_clear(ssdpResServerList);
/**** HTTP Server ****/
httpServerList = cg_upnp_controlpoint_gethttpserverlist(ctrlPoint);
cg_log_debug_s("Stopping http servers.\n");
cg_http_serverlist_stop(httpServerList);
cg_log_debug_s("Done\n");
cg_http_serverlist_close(httpServerList);
cg_http_serverlist_clear(httpServerList);
cg_upnp_controlpoint_lock(ctrlPoint);
cg_log_debug_s("Got controlpoint lock.\n");
/* Unsubscribe from all services */
for (dev = cg_upnp_controlpoint_getdevices(ctrlPoint);
dev != NULL;
dev = cg_upnp_device_next(dev))
{
udn = cg_upnp_device_getudn(dev);
/* Call device listener for each device */
if (udn != NULL && listener != NULL)
{
cg_upnp_controlpoint_unlock(ctrlPoint);
listener(ctrlPoint, udn, CgUpnpDeviceStatusRemoved);
cg_upnp_controlpoint_lock(ctrlPoint);
}
}
/* Empty device cache */
cg_upnp_devicelist_clear(ctrlPoint->deviceList);
cg_log_debug_s("Device list cleared.\n");
cg_upnp_controlpoint_unlock(ctrlPoint);
cg_log_debug_l4("Leaving...\n");
return TRUE;
}
