多线程端口扫描器

来源：互联网发布：花呗可以淘宝买东西吗编辑：程序博客网时间：2024/04/30 04:38
废话不多说，直接上源码。需要在cmd下传递参数
#include <stdio.h>#include<winsock2.h>#include <time.h>#pragma comment(lib,"ws2_32.lib")char *host;int thread_num,thread_max,port_num;long port_now;TIMEVAL timeout; FD_SET    mask;void introduc(char *name);void display(void)  ;void ThreadEnd(void);DWORD WINAPI ThreadScan( LPVOID lp ); void main( int argc,char **argv ) {         WSADATA ws;     char *p;         int port_start,port_end;     if(argc!=4) //判断参数是否为4个     {         introduc(argv[0]);         return ;     }     long result;     result=WSAStartup(MAKEWORD(2,2), &ws);        p=argv[2];//取得端口的范围    if(strstr(argv[2],"-"))    {                    port_start=atoi(argv[2]);        for(;*p;)            if(*(p++)=='-')break;        port_end=atoi(p);        if(port_start<1 || port_end>65535)        {                            printf("Port Error!\n");            return;        }    }    host=argv[1];     thread_max=(atoi(argv[3])-1>999)?999:atoi(argv[3])-1;        introduc(argv[0]);        timeout.tv_usec=0;        if(thread_max>500)timeout.tv_sec=2;        else timeout.tv_sec=1;        port_num=port_end-port_start;         printf("Loading......\n");        for(int port=port_start;port<port_end;port++,port_now++,thread_num++)        {                 display();                  while(thread_num>thread_max)Sleep(10);//当线程数大于最大线程数就等待一会          CreateThread( NULL,0,ThreadScan,&port, 0,NULL);//创建扫描线程        }        printf("\n\n");        ThreadEnd();        WSACleanup();        return ;}//介绍函数void introduc(char *name) {        printf("---------------------------------Portscaner---------------------------------\n");        printf("\tplease input : %s,IP,port from start to end,thread_max(1000)\n",name);        printf("\tExample: %s 192.168.1.1 1-10000 500\n",name);        printf("---------------------------------Portscaner---------------------------------\n");}// 定义状态提示函数 void display(void)  {         printf("%dthreads %d %s completed.\r",thread_num,port_now*100/(port_num+1),"%");        Sleep(1);} //关闭线程void ThreadEnd(void){        Sleep(1000);        printf("\nThread ending....\n");        while(thread_num>0)         {                      Sleep(1);                          printf(" \t%d threads \r",thread_num);          }        printf("\nThread ended!\n");}//扫描函数 DWORD WINAPI ThreadScan( LPVOID lp ){           int port=*(DWORD*)lp; //取得要扫描的端口号        SOCKET sock;    struct sockaddr_in addr;    u_long value;    addr.sin_family =AF_INET;        addr.sin_addr.s_addr =inet_addr(host);    value=1;    sock = socket(AF_INET, SOCK_STREAM, 0);    if(sock==INVALID_SOCKET)    {                printf("Socket error!\n");         InterlockedExchangeAdd((long *)&thread_num,-1);//线程数减1         return 0;    }    ioctlsocket(sock,FIONBIO,&value);//把sock设定为非阻塞模式        addr.sin_port = htons(port);    connect(sock,(struct sockaddr *) &addr, sizeof(addr));        FD_ZERO(&mask);    FD_SET(sock,&mask);    value=select(0,NULL,&mask,NULL,&timeout);    if(value==0 || value==-1)    {                     closesocket(sock);                 Sleep(50);                    InterlockedExchangeAdd((long *)&thread_num,-1);         return 0;    }    else    {         shutdown(sock, 0); //阻止socket接收和发送数据         printf("\t\tFound port %d open.\r\n",port);//打印扫到的端口         closesocket(sock);         Sleep(50);         InterlockedExchangeAdd((long *)&thread_num,-1);        }    return 0;}
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