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Started by Xtremehobo Jul 22, 2003 at 1:54 AM 4 replies 400+ views
Original Post
Xtremehobo
Xtremehobo
I'm writing a *cough* mass net send program but something is acting strange when I try to pass a variable from CreateThread to my ThreadPoc. Basically, my program could create about 250 threads and pass an id number to each (id number starts at 0 and goes up to 250 or so). I then insert that ID number into the last ocet of an IP address and print out a list of the generated IP addresses. As you can see below, the list isn't how it should be. The last ocets should start at 0 and go up to ~250, but instead, there's lots of duplicates and missing ones: 
Generating IP's
IP addresses generated, Creating threads

12.230.77.0
12.230.77.18
12.230.77.18
12.230.77.18
12.230.77.18
12.230.77.18
12.230.77.18
12.230.77.18
12.230.77.18
12.230.77.18
12.230.77.18
12.230.77.18
12.230.77.18
12.230.77.18
12.230.77.18
12.230.77.18
12.230.77.18
12.230.77.18
12.230.77.18
12.230.77.36
12.230.77.36
12.230.77.36
12.230.77.36
12.230.77.36
12.230.77.36
12.230.77.36
12.230.77.36
12.230.77.36
12.230.77.36
12.230.77.36
12.230.77.36
12.230.77.36
12.230.77.36
12.230.77.36
12.230.77.36
12.230.77.36
12.230.77.36
12.230.77.54
12.230.77.54
12.230.77.54
12.230.77.54
12.230.77.54
12.230.77.54
12.230.77.54
12.230.77.54
12.230.77.54
12.230.77.54
12.230.77.54
12.230.77.54
12.230.77.54
12.230.77.54
12.230.77.54
12.230.77.54
12.230.77.54
12.230.77.54
12.230.77.72
12.230.77.72
12.230.77.72
12.230.77.72
12.230.77.72
12.230.77.72
12.230.77.72
12.230.77.72
12.230.77.72
12.230.77.72
12.230.77.72
12.230.77.72
12.230.77.72
12.230.77.72
12.230.77.72
12.230.77.72
12.230.77.72
12.230.77.72
12.230.77.87
12.230.77.87
12.230.77.87
12.230.77.87
12.230.77.87
12.230.77.87
12.230.77.87
12.230.77.87
12.230.77.87
12.230.77.87
12.230.77.87
12.230.77.87
12.230.77.87
12.230.77.87
12.230.77.87
12.230.77.105
12.230.77.105
12.230.77.105
12.230.77.105
12.230.77.105
12.230.77.105
12.230.77.105
12.230.77.105
12.230.77.105
12.230.77.105
12.230.77.105
12.230.77.105
12.230.77.105
12.230.77.105
12.230.77.105
12.230.77.105
12.230.77.105
12.230.77.105
12.230.77.123
12.230.77.123
12.230.77.123
12.230.77.123
12.230.77.123
12.230.77.123
12.230.77.123
12.230.77.123
12.230.77.123
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12.230.77.123
12.230.77.123
12.230.77.123
12.230.77.123
12.230.77.123
12.230.77.123
12.230.77.123
12.230.77.141
12.230.77.141
12.230.77.141
12.230.77.141
12.230.77.141
12.230.77.141
12.230.77.141
12.230.77.141
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12.230.77.141
12.230.77.141
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12.230.77.141
12.230.77.141
12.230.77.141
12.230.77.141
12.230.77.159
12.230.77.159
12.230.77.159
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12.230.77.159
12.230.77.159
12.230.77.159
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12.230.77.159
12.230.77.159
12.230.77.159
12.230.77.159
12.230.77.177
12.230.77.177
12.230.77.177
12.230.77.177
12.230.77.177
12.230.77.177
12.230.77.177
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12.230.77.177
12.230.77.177
12.230.77.177
12.230.77.177
12.230.77.195
12.230.77.195
12.230.77.195
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12.230.77.195
12.230.77.213
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12.230.77.213
12.230.77.213
12.230.77.213
12.230.77.231
12.230.77.231
12.230.77.231
12.230.77.231
12.230.77.231
12.230.77.231
12.230.77.231
12.230.77.231
12.230.77.231
12.230.77.231
12.230.77.231
12.230.77.231
12.230.77.231
12.230.77.231
12.230.77.231
12.230.77.231
12.230.77.231
12.230.77.231
12.230.77.249
12.230.77.249
12.230.77.249
12.230.77.249
12.230.77.249
12.230.77.249
12.230.77.249
12.230.77.249
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12.230.77.249
12.230.77.249
12.230.77.249
12.230.77.249
Here's my code: 
// massmsg.cpp : Defines the entry point for the console application.

//


#include "stdafx.h"
#include <windows.h>
#include <lm.h>
#include <winsock.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define MAXLEN 1024

DWORD WINAPI ThreadFunc( LPVOID lpParam );
int done=0;
struct ip
{
	char Recp[255];
};

ip IPS[254];

int main(int argc, char* argv[])
{
		// TODO: Place code here.

	printf("Generating IP's\n");
	for(int x=0;x<254;x++)
	{
		sprintf(IPS[x].Recp,"12.230.77.%i",x);
	
		
	}
	printf("IP addresses generated, Creating threads\n\n");
	for(int i=0;i<254;i++)
	{
		DWORD dwThreadId=1;
		DWORD dwThrdParam=i;

		//Create some threads =D

		HANDLE hThread; 
		hThread = CreateThread( 
        NULL,                        // default security attributes 

        0,                           // use default stack size  

        ThreadFunc,                  // thread function 

        &dwThrdParam,                // argument to thread function 

        0,                           // use default creation flags 

        &dwThreadId);                // returns the thread identifier 

	}
	while(1) {};
	return 0;
}

DWORD WINAPI ThreadFunc( LPVOID lpParam ) 
{ 
	NET_API_STATUS     nasRc;

    char Message[] = "Block these ads FOR FREE!\n\n visit http://www.updatexp.com/destroyads.html for instructions!";

	//char Recp[] = "localhost";

	char Me[] = "Matt";
	wchar_t wMessage[MAXLEN];
	wchar_t wRecp[MAXLEN];
	wchar_t wYou[MAXLEN];
	wchar_t wMe[MAXLEN];
	mbstowcs( wMessage, Message, MAXLEN );
	mbstowcs( wRecp, IPS[*((int *)lpParam)].Recp, MAXLEN);
	mbstowcs( wMe, Me, MAXLEN);
	wMessage[MAXLEN - 1] = L'\0';
	wRecp[MAXLEN - 1] = L'\0';
	wMe[MAXLEN - 1] = L'\0';
	printf(IPS[*((DWORD*)lpParam)].Recp);
	//printf("%i",*((double *)lpParam));

	printf("\n");
	/*nasRc = NetMessageBufferSend(NULL,              // server name (null means this machine)
                                (unsigned short*)wRecp,           // name (alias) of recipient
                                 (unsigned short*)wMe,       // who this is from 
                                 (unsigned char *)&wMessage,   // message
                                 sizeof(Message));

	switch(nasRc)
    {
        case ERROR_ACCESS_DENIED:
           printf("Access Denied\n");
            break;
 
        case ERROR_INVALID_PARAMETER:
            printf("Invalid Parameter\n");
            break;

        case ERROR_NOT_SUPPORTED:
            printf("Not Supported\n");
            break;

        case NERR_NameNotFound:
           printf("Name Not Found\n");
            break;
 
        case NERR_NetworkError:
         printf("Network Error\n");
            break;
 
        case NERR_Success:
        printf("Successfully sent message to ");
		printf(IPS[*((int *)lpParam)].Recp);
		printf("\n");
            break;

	}
	*/

  return 0;
}
Thanks [edited by - Xtremehobo on July 22, 2003 2:56:00 AM] [edited by - Xtremehobo on July 22, 2003 2:56:20 AM] [edited by - Xtremehobo on July 22, 2003 2:56:42 AM]
pixelwrench.com | [email="matt[nospam]@pixelwrench[nospam]com"]email[/email] lethalhamster: gamedev keeps taking my money, but im too lazy to not let them
Pootle
Pootle
char Message[] = "Block these ads FOR FREE!\n\n visit http://www.updatexp.com/destroyads.html for instructions!";

??

I can see the problem, but ethics prevent me from fixing spammer tools!
Xgkkp
Xgkkp
You know, I''ve considered sending one saying "To get rid of these messages, just type "net stop messenger" at the command line!".
Xtremehobo
Xtremehobo
quote:
Original post by Pootle
char Message[] = "Block these ads FOR FREE!\n\n visit http://www.updatexp.com/destroyads.html for instructions!";

??

I can see the problem, but ethics prevent me from fixing spammer tools!


nnonononononon that URL was a random one that I picked off the internet I guess I could replace it with ''type net stop messenger'', but what''s the problllemmm??? ppleeaasssseee?
pixelwrench.com | [email="matt[nospam]@pixelwrench[nospam]com"]email[/email] lethalhamster: gamedev keeps taking my money, but im too lazy to not let them
Xtremehobo
Xtremehobo
quote:
Original post by Pootle
I can see the problem, but ethics prevent me from fixing spammer tools!


You''re evil

*sniff* besides, *sniff* I still need to know how to pass arguments to threads propery for a MUD server I''m working on


pixelwrench.com | [email="matt[nospam]@pixelwrench[nospam]com"]email[/email] lethalhamster: gamedev keeps taking my money, but im too lazy to not let them

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