Beispiel #1
0
static CFDataRef IPCCallback(__unused CFMessagePortRef port, SInt32 messageID, __unused CFDataRef data, __unused void *info)
{
	switch(messageID)
	{
		case ServerCommandGetIP:
		{
			if(publicIPState == IPStateInvalid)
			{
				SCNetworkReachabilityFlags flags;
				SCNetworkReachabilityGetFlags(reachability, &flags);

				ReachabilityCallback(reachability, flags, NULL);
			}

			if(publicIPData)
				return publicIPData;

			return CFStringCreateExternalRepresentation(kCFAllocatorDefault, CFSTR(""), kCFStringEncodingUTF8, 0);
		}
		case ServerCommandStop:
		{
			CFRunLoopStop(CFRunLoopGetMain());
			return NULL;
		}
		case ServerCommandReload:
		{
			FetchIPAddress();
			return NULL;
		}

		default:
			return NULL;
	}
}
Beispiel #2
0
static void ReachabilityCallback(__unused SCNetworkReachabilityRef target, SCNetworkReachabilityFlags flags, __unused void *info)
{
	if(flags & kSCNetworkReachabilityFlagsReachable)
	{
		FetchIPAddress();
	}
	else
	{
		CFRelease(publicIPData);
		publicIPData = NULL;
		publicIPState = IPStateInvalid;
	}
}
int CheckForNewIPAddress(unsigned int *LocalAddr) {
    IPECHO_MESSAGE Msg ;
    int Socket ;
    fd_set SocketArray ;
    int Result, ResponseLength ;
    struct sockaddr_in sin;
    int Tries = 10 ;
    unsigned int EchoServerIPAddress ;
    struct timeval tv = {0,0}  ;
    int BytesSent ;

    //if ((EchoServerIPAddress = FetchIPAddress(ECHO_SERVER_TO_USE)) == 0)  {
    	if ((EchoServerIPAddress = FetchIPAddress(TZO_ECHO_SERVER)) == 0)  {
    	printf("115 EchoServerIPAddress = %d \n",EchoServerIPAddress);
        printf("Unable to contact TZO Echo Servers\n") ;
        return(-1) ;
    }
    printf("119 EchoServerIPAddress = %d \n",EchoServerIPAddress);

    if ((Socket = socket(PF_INET, SOCK_DGRAM, 0)) < 0) {
        printf("Unable to create a socket\n") ;
        return(-1) ;
    }

// test
    // EchoServerIPAddress = 0x401BA664;--->"No resonce from server\n"
     
    //  EchoServerIPAddress = 0x64A61B40 ;
     
    sin.sin_family = AF_INET ;
    sin.sin_addr.s_addr = EchoServerIPAddress ;
    
    sin.sin_port = htons(IPECHO_PORT) ;

    Msg.ID = IPECHO_ID_CLIENT ;
    Msg.Request = IPECHO_REQUEST_ECHO ;
    Msg.IPAddress = *LocalAddr ;
    Msg.Signature = CalcIPEchoSignature(&Msg) ;

    ResponseLength = 0 ;
    
    printf("LocalAddr =%d \n",Msg.IPAddress);

    if ((BytesSent = sendto(Socket, (unsigned char *)&Msg, sizeof(Msg), 0, (const struct sockaddr *)&sin, sizeof(sin))) < 0) {
    	 //sin.sin_addr.s_addr =0x64A61B40 ;//0x401BA664;
    	 //if ((BytesSent = sendto(Socket, (unsigned char *)&Msg, sizeof(Msg), 0, (const struct sockaddr *)&sin, sizeof(sin))) < 0) {
        printf("Unable to sendto socket\n") ;
        close(Socket) ;
        
        
        return(-1) ;
    }

    while (Tries--)  {
        tv.tv_sec = 0 ;
        tv.tv_usec = 0 ;
        FD_ZERO(&SocketArray) ;
        FD_SET(Socket, &SocketArray) ;
        tv.tv_sec = 1 ;
        tv.tv_usec = 0 ;
        Result = select(Socket+1, &SocketArray, NULL, NULL, &tv) ;

        if (Result)
            break ;
        sleep(1) ;
        }

    if (!Result) {
        printf("No resonce from server\n") ;
	    close(Socket) ;
        return(-1) ;
    }

    if ((ResponseLength = recvfrom(Socket, (unsigned char *)&Msg, 16, 0, 0, 0)) <= 0) {
        printf("Bad responce from server\n") ;
        close(Socket) ;
        return(-1) ;
    }

    close(Socket) ;

    if (ResponseLength == sizeof(IPECHO_MESSAGE)) {
        *LocalAddr = FlipByteOrder(Msg.IPAddress) ;
        return 1 ;
    }
printf("strange server response, are you connecting to the right server?\n") ;
  return(-1) ;
}