一个包含详细注释的扫描器C源代码
一个包含详细注释的扫描器C源代码
文章作者：[email][email protected][/email][code]#include <stdio.h>
#include <winsock2.h>
#include <time.h>
#define iPort 80//目标Web Server端口
.#define szSign "500 13/r/nServer: Microsoft-IIS/5.0"//根据此标志来检查目标是否有漏洞
#pragma comment(lib,"ws2_32.lib")
///////////////////////////////////////////////////////////////////////////
//
//定义&初始化全局变量
char *SendBuff="GET /NULL.printer/n",//发送的请求buff
CurrentTarget[52]={0},//存放最后一个线程将扫描的目标
turn[4][2]={"-","//","|","/"};//显示进度时的字符
int SendBuffLen=strlen(SendBuff),//发送的buff长度
iConnTimeout,//TCP Connect TimeOut
ii=0,//扫描进度
iTotal;//服务器总数
HANDLE hSemaphore=NULL,//信标内核对象句柄，用来控制线程数量
hStdout;//console标准输出句柄，做进度显示的时候用的
struct timeval timeout;//连接、发送和接收的超时值
DWORD SleepTime;//每个一个线程后等待的时间
/*
SleepTime值根据用户输入的线程数量[ThreadNum]和TCP ConnectTimeOut[CONNTIMEO]来计算。确保在CONNTIMEO时间左右开ThreadNum个线程。这样在CONNTIMEO时间后，所开的线程开始陆续超时退出，可以继续稳定的开线程，可以有效的保证同时有ThreadNum个线程在运行。
*/
///////////////////////////////////////////////////////////////////////////
void ShowError(char *);//显示出错信息函数
BOOL ResetCursor(void);//重置光标位置，线程输出的时候调用的
DWORD WINAPI ShowProInfo(LPVOID);//显示进度信息
DWORD WINAPI scan(LPVOID);//扫描函数
void usage(char *);//帮助函数
///////////////////////////////////////////////////////////////////////////
int main(int argc,char **argv)
{
HANDLE hThread=NULL;//线程句柄
DWORD dwThreadID;//线程ID
struct sockaddr_in sa;
int i,
MaxThread;//最大线程数量
WSADATA wsd;
long PreviousCount;
clock_t start,end;//程序运行的起始和结束时间
double duration;
//检查用户输入参数
if(argc!=5)
{
usage(argv[0]);
return 1;
}
//get target range
int StartNet=inet_addr(argv[1]);
int StopNet=inet_addr(argv[2]);
int StartHost=ntohl(StartNet);
int StopHost=ntohl(StopNet);
//取得线程数量
MaxThread=atoi(argv[3]);
//取得conn超时时间
iConnTimeout=atoi(argv[4]);
//检查参数合法性
if((iConnTimeout>6) || (iConnTimeout<2) || (MaxThread<1) || (MaxThread>500) || (StopHost<StartHost))
{
usage(argv[0]);
return 1;
}
//计算时间
SleepTime=1000*iConnTimeout/MaxThread;
//设置连接超时值
timeout.tv_sec = iConnTimeout;
timeout.tv_usec =0;
__try
{
//开始计时
start=clock();
//加载winsock库
if (WSAStartup(MAKEWORD(1,1), &wsd) != 0)
{
ShowError("WSAStartup");
__leave;
}
//创建信标内核对象句柄
hSemaphore=CreateSemaphore(NULL,MaxThread,MaxThread,NULL);
if(hSemaphore==NULL)
{
ShowError("CreateSemaphore");
__leave;
}
//取得console标准输出句柄
hStdout=GetStdHandle(STD_OUTPUT_HANDLE);
if(hStdout==INVALID_HANDLE_VALUE)
{
ShowError("GetStdHandle");
__leave;
}
//设置目标总数
iTotal=StopHost-StartHost;
//创建进度显示线程
hThread=CreateThread(NULL,0,ShowProInfo,NULL,0,&dwThreadID);
if(hThread==NULL)
{
ShowError("1 CreateThread");
__leave;
}
//关闭句柄
CloseHandle(hThread);
//循环创建扫描线程
for(i=StartHost;i<=StopHost;i++)
{
//等待信标内核对象通知
WaitForSingleObject(hSemaphore,INFINITE);
//create thread to scan
hThread=CreateThread(NULL,0,scan,(LPVOID)i,0,&dwThreadID);
if(hThread==NULL)
{
ShowError("2 CreateThread");
break;
}
//进度自加1
ii++;
//重设最后一个线程扫描的目标
sa.sin_addr.s_addr=htonl(i);
strncpy(CurrentTarget,inet_ntoa(sa.sin_addr),sizeof(CurrentTarget));
//休息一会儿 )
Sleep(SleepTime);
//关闭线程句柄
CloseHandle(hThread);
}
//等待所有线程结束
while(1)
{
WaitForSingleObject(hSemaphore,INFINITE);
if(!ReleaseSemaphore(hSemaphore,1,&PreviousCount))
{
ShowError("main() ReleaseSemaphore");
Sleep(5000);
break;
}
if(PreviousCount==(MaxThread-1))
{
printf("/nAll done.");
break;
}
Sleep(500);
}
}//end of try
//搞定，清场，收工
__finally
{
//计时结束
end=clock();
//转换时间格式
duration = (double)(end - start) / CLOCKS_PER_SEC;
//显示所用时间
printf("/n/nComplete.Scan %d targets use %2.1f seconds.Speed %0.3g/s/n",iTotal,duration,iTotal/duration);
//关闭句柄
CloseHandle(hStdout);
CloseHandle(hSemaphore);
WSACleanup();
}
return 0;
}
///////////////////////////////////////////////////////////////////////////
//
//回显错误信息函数
//
void ShowError(char *msg)
{
MessageBox(NULL,msg,"ERROR",0);
//printf("/n%s failed:%d",GetLastError());
}
//////////////////////////////////////////////////////////////////////////
//
//重置光标位置函数，以便扫描线程输出结果
//
BOOL ResetCursor()
{
CONSOLE_SCREEN_BUFFER_INFO ConsoleScreenBufferInfo;
//取得当前光标位置
if(!GetConsoleScreenBufferInfo(hStdout,&ConsoleScreenBufferInfo))
{
ShowError("GetConsoleScreenBufferInfo");
return FALSE;
}
//设置光标X坐标为0
ConsoleScreenBufferInfo.dwCursorPosition.X=0;
//设置当前光标位置
SetConsoleCursorPosition(hStdout,ConsoleScreenBufferInfo.dwCursorPosition);
return TRUE;
}
///////////////////////////////////////////////////////////////////////////
//
//显示进度信息函数
//
DWORD WINAPI ShowProInfo(LPVOID lp)
{
int j,k;
CONSOLE_SCREEN_BUFFER_INFO ConsoleScreenBufferInfo;
float m;
for(j=0;ii<iTotal;j++)
{
//休息一会儿 ))
Sleep(SleepTime);
//取得当前光标位置
if(!GetConsoleScreenBufferInfo(hStdout,&ConsoleScreenBufferInfo))
{
ShowError("GetConsoleScreenBufferInfo");
return 1;
}
//设置百分比进度显示的X坐标
ConsoleScreenBufferInfo.dwCursorPosition.X=0;
//设置当前光标位置
SetConsoleCursorPosition(hStdout,ConsoleScreenBufferInfo.dwCursorPosition);
//已经完成的百分比
m=(ii+1)*100.00/iTotal;
//显示进度
if(ii==iTotal)
{
printf("******** 100%% Wait %d seconds to exit ******** /n",iConnTimeout);
break;
}
else
{
k=j%4;
printf("%-15s %s [%d/%d] %s %%%0.3g",CurrentTarget,turn[k],ii,iTotal,turn[k],m);
}
}//end of for
return 0;
}
///////////////////////////////////////////////////////////////////////////
//
//扫描函数
//
DWORD WINAPI scan(LPVOID lp)
{
int i=(int)lp,iErr;
struct sockaddr_in server;
SOCKET s=INVALID_SOCKET;
char RecvBuff[1024]={0},*ptr;
int RecvBuffLen=sizeof(RecvBuff);
u_long ul=1;//初始化为为非0值
fd_set r,w;
//create socket
s=socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if(s==INVALID_SOCKET)
{
printf("/nCreate socket failed:%d",GetLastError());
ExitProcess(1);
}
//fill the addr struct
server.sin_family=AF_INET;
server.sin_port=htons(iPort);
server.sin_addr.S_un.S_addr=htonl(i);
__try
{
//设置socket为非锁定模式,ul为0值的话，那么soocket将被设置为锁定模式
iErr=ioctlsocket(s,FIONBIO,(unsigned long*)&ul);
if(iErr==SOCKET_ERROR )
{
ResetCursor();
ShowError("ioctlsocket");
ExitProcess(1);
}
//printf("/n%X ioctl ok.strat conn",i);
//connect to target
connect(s,(struct sockaddr *)&server,sizeof(server));
//printf("/n%X conn return,start select w",i);
//设置select参数
FD_ZERO(&w);
FD_SET(s, &w);
//等待connect成功&socket可写
iErr=select(0, 0, &w, 0, &timeout);
//printf("/n%X select w return %d",i,iErr);
//等待返回后，socket仍不可写则退出
if((iErr==SOCKET_ERROR) || (iErr==0))
{
//printf("/n%X select return w err,exit",i);
__leave;
}
//socket可写则继续
else
{
//send buff to target
//printf("/n%X send",i);
iErr=send(s,SendBuff,SendBuffLen,0);
//printf("/n%X send return",i);
if(iErr==SOCKET_ERROR)
__leave;
}
//等待socket可读
FD_ZERO(&r);
FD_SET(s, &r);
//printf("/n%X start select r",i);
iErr=select(0, &r, 0, 0, &timeout);
//printf("/n%X select r return %d",i,iErr);
if((iErr==SOCKET_ERROR) || (iErr==0))
{
//printf("/n%X select r err,exit",i);
__leave;
}
else
{
//recv buff from target
//printf("/n%X start recv",i);
iErr=recv(s,RecvBuff,RecvBuffLen,0);
//printf("/n%X recv ret",i);
if(iErr==SOCKET_ERROR)
__leave;
}
//verify buff
ptr=strstr(RecvBuff,szSign);
if(ptr!=NULL)
{
//线程输出前要先调用ResetCursor函数
ResetCursor();
//输出信息后务必加一个以上换行符号，输出前请别加换行符号，以免显示混乱
printf("[%-15s] has .printer mapped. /n",inet_ntoa(server.sin_addr));
}
}
__finally
{
if(!ReleaseSemaphore(hSemaphore,1,NULL))
ShowError("thread ReleaseSemaphore failed");
closesocket(s);
}
return 0;
}
///////////////////////////////////////////////////////////////////////////
void usage(char *proname)
{
printf("/n%s v0.1 only can find IIS5 .Printer mapped"
"/nPower by ey4s<[email][email protected][/email]> 2001.5.20"
"/nhttp://www.patching.net"
"/n/nUsage:%s <StartIP> <EndIP> <ThreadNum> <CONNTIMEO>"
"/n/nNotice"
"/n StartIP StopIP ==>Don‘t forgot StopIP must large than StartIP "
"/n ThreadNum ==>Thread number,please input between 1-500"
"/n CONNTIMEO ==>TCP connect timeout,please input between 2-6"
"/n/nExample"
"/n %s 192.168.0.0 192.168.255.255 200 2",proname,proname,proname);
}