求助：Telnet服务端程序

自己写的Telnet服务端，客户端用Windows自带的，现在要求要达到远程执行一些dos命令，在返回结果就行，但是执行过程中遇到一些命令执行结果不全，如：dir、ver等等，其他的ipcongfig help之类还蛮全的，就是查不到原因，请大神指点一下！！！
代码如下（不太长，重点应该在创建进程那边出的错！请指定！！）：
#include <Winsock2.h>
#include <stdio.h>
#include<string>
#include<cstring>
#include<windows.h>
#include<Winbase.h>
#include<stdafx.h>
#include <fcntl.h>
#pragma comment(lib,"ws2_32")struct CMD
{
char cmdbuffer[50];
}cmd[20];
int i=0;
char buffer[10000]; //执行结果
char command[50];   //命令接收数组
void ShuJu()
{ /*创建句柄及初始化*/
SECURITY_ATTRIBUTES sa;
HANDLE hRead,hWrite;
sa.nLength = sizeof(SECURITY_ATTRIBUTES);
sa.lpSecurityDescriptor = NULL;
sa.bInheritHandle = TRUE;
if (!CreatePipe(&hRead,&hWrite,&sa,0)) 
{
return;
} 
STARTUPINFO si;
PROCESS_INFORMATION pi; 
si.cb = sizeof(STARTUPINFO);
GetStartupInfo(&si); 
si.hStdError = hWrite;            
si.hStdOutput = hWrite;           
si.wShowWindow = SW_HIDE;
// si.wShowWindow = SW_SHOW;
si.dwFlags = STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES;
// si.dwFlags = STARTF_USESHOWWINDOW;
if (!CreateProcess(NULL,command,NULL,NULL,TRUE,NULL,NULL,NULL,&si,&pi)) 
{
CloseHandle(hWrite);
CloseHandle(hRead);
return;
}
CloseHandle(hWrite);
memset(buffer,0,10000);
DWORD bytesRead; 
while (true) 
{
bool bret=ReadFile(hRead,buffer,10000,&bytesRead,NULL); if (bret)
 {
if (bytesRead == 0)
break;
    if (bytesRead <10000)
    break;
 }
else
 {
 DWORD i = GetLastError();
 break;
}  
}
CloseHandle(hRead);       
printf("数组buffer为：%s\n",buffer);
int bufferstr=strlen(buffer);
printf("命令的长度为：%d\n",bufferstr);
// printf("指令执行完毕！\n");
printf("bytesRead长度为：%d",bytesRead);
}/*主函数*/
void main()
{
/*创建套接字*/
WORD wVersionRequested;
WSADATA wsaData;
int err;
wVersionRequested = MAKEWORD(1,1);
err = WSAStartup(wVersionRequested,&wsaData);
if (err != 0)
{
return;
}
if (LOBYTE(wsaData.wVersion) != 1 || HIBYTE(wsaData.wVersion) != 1) 
{
WSACleanup();
return; 
}
SOCKET socSrv;
socSrv = socket(AF_INET,SOCK_STREAM,0);
SOCKADDR_IN addrSrv;
addrSrv.sin_addr.S_un.S_addr = htonl(INADDR_ANY);
addrSrv.sin_family = AF_INET;
addrSrv.sin_port = htons(6000); bind(socSrv,(SOCKADDR*)&addrSrv,sizeof(addrSrv));
listen(socSrv,50);
SOCKADDR_IN addrClient;
int addrLen = sizeof(SOCKADDR_IN);
SOCKET socClient = accept(socSrv,(SOCKADDR*)&addrClient,&addrLen); /*身份认证！！接收客户端申请，然后对客户端发送命令输入提示，打开客户端回显*/
char SS[10],S1[10],S2[10];
recv(socClient,SS,10,0);
char ZH[10]="ddd";char MM[10]="123"; do{
send(socClient,"请输入登录账号>",sizeof("请输入登录账号>"),0);
char *r;
r=S1;
while(1)
{
recv(socClient,r,sizeof(r),0);
if(*r=='\r')break;
if(*r=='\b')
{ char BS1[3];
 BS1[0]=46;
 BS1[1]=8;
 BS1[2]='\0';
 send(socClient,BS1,sizeof(BS1),0);
 r--;
}
else r++;
}
*r='\0'; /*末尾补\0*/
send(socClient,"请输入密码>",sizeof("请输入密码>"),0);
char *t;
t=S2;
while(1)
{
recv(socClient,t,sizeof(t),0);
char hx[4];
     hx[0]=46;
 hx[1]=8;
 hx[2]=8;  
 hx[3]='*';   
send(socClient,hx,sizeof(hx),0);
if(*t=='\r')
{char hx1[1];hx1[0]=8;send(socClient,hx1,sizeof(hx1),0);break;}
if(*t=='\b')
{ char BS2[3];
 BS2[0]=8;
 BS2[1]=46;
 BS2[2]='\0';
 send(socClient,BS2,sizeof(BS2),0);
 t--;
}
else t++;
}
*t='\0'; /*末尾补\0*/
}while(strcmp(ZH,S1)!=0||strcmp(MM,S2)!=0);
send(socClient,"身份验证通过！",sizeof("身份验证通过！"),0);
/*程序主体，实现远程操作及维护*/
send(socClient,"\r\n请输入命令>",sizeof("\r\n请输入命令>"),0);
memset(command,0,50);
while(1)
{
char fx[50];memset(fx,0,50);
char recvbuf[50]=" ";
char *p;
p=recvbuf;
// while(1)
// {   
recv(socClient,fx,sizeof(fx),0);
if(fx[0]==27&&fx[1]==91)
{
switch(fx[2])
{
case 65:
printf("数组fx为：%s",fx);
send(socClient,cmd[i].cmdbuffer,sizeof(cmd[i].cmdbuffer),0);
strcpy(command,cmd[i].cmdbuffer);
ShuJu();
printf("打印command:%s",command);
send(socClient,buffer,sizeof(buffer),0);
i--;
// send(socClient,"执行指令telnet！\r\n请继续输入命令>",sizeof("执行指令telnet！\r\n请继续输入命令>"),0);
break;
case 66:
printf("数组fx为：%s",fx);
send(socClient,"判断出是向下键！\r\n继续输入命令>",sizeof("判断出是向下键！\r\n继续输入命令>"),0);
break;
case 67:
printf("数组fx为：%s",fx);
send(socClient,"判断出是向右键！\r\n继续输入命令>",sizeof("判断出是向右键！\r\n继续输入命令>"),0);
break;
case 68:
printf("数组fx为：%s",fx);
send(socClient,"判断出是向左键！\r\n继续输入命令>",sizeof("判断出是向左键！\r\n继续输入命令>"),0);
break;
}
continue;
}
// break;
// }
// fx[3]='\0';
recvbuf[0]=fx[0];
p++;
/*接收客户端发来的命令*/
while(1)
{
recv(socClient,p,sizeof(p),0);
if(*p=='\r')break;
else if(*p=='\b')
{ char BS[3];
     BS[0]=46;
 BS[1]=8;
 BS[2]='\0'; 
      send(socClient,BS,sizeof(BS),0);
 p--;
}
else p++;
int STRLEN=strlen(recvbuf);
printf("数组buf为：%s;数组长度为：%d.\n",recvbuf,STRLEN);
}
*p='\0';      /*末尾补'\0'，命令接受完毕！*/
Sleep(300);

/*对命令解析，执行并返回结果*/
/*调用windows的API函数执行一些Dos操作*/

strcpy(command,"Cmd.exe /C ");
/*help命令*/
if(strcmp(recvbuf,"?")==0||strcmp(recvbuf,"help")==0)
{
strcat(command,recvbuf);
ShuJu();printf("打印command:%s",command);
send(socClient,buffer,sizeof(buffer),0);
send(socClient,"执行指令help！\r\n请继续输入命令>",sizeof("执行指令help！\r\n请继续输入命令>"),0);
}
/*ipconfig命令*/
else if(strcmp(recvbuf,"ipconfig")==0)
{
strcat(command,recvbuf);
ShuJu();printf("打印command:%s",command);
send(socClient,buffer,sizeof(buffer),0);
send(socClient,"执行指令ipconfig！\r\n请继续输入命令>",sizeof("执行指令ipconfig！\r\n请继续输入命令>"),0);

}
/*ipconfig /all命令*/
else if(strcmp(recvbuf,"ipconfig /all")==0)
{
strcat(command,recvbuf);
ShuJu();
printf("打印command:%s",command);
send(socClient,buffer,sizeof(buffer),0);
send(socClient,"执行指令ipconfig /all！\r\n请继续输入命令>",sizeof("执行指令ipconfig /all！\r\n请继续输入命令>"),0);

}
/*cd ..命令*/
else if(strcmp(recvbuf,"cd ..")==0)
{
strcat(command,recvbuf);

}
/*telnet命令*/
else if(strcmp(recvbuf,"telnet")==0)
{
strcat(command,recvbuf);
ShuJu();
printf("打印command:%s",command);
send(socClient,buffer,sizeof(buffer),0);
send(socClient,"执行指令telnet！\r\n请继续输入命令>",sizeof("执行指令telnet！\r\n请继续输入命令>"),0);

}
/*ver命令*/
else if(strcmp(recvbuf,"ver")==0)
{
strcat(command,recvbuf);
ShuJu();
printf("打印command:%s",command);
send(socClient,buffer,sizeof(buffer),0);
send(socClient,"执行指令ver！\r\n请继续输入命令>",sizeof("执行指令ver！\r\n请继续输入命令>"),0);

}
/*dir命令*/
else if(strcmp(recvbuf,"dir")==0)
{
strcat(command,recvbuf);
ShuJu();
printf("打印command:%s",command);
send(socClient,buffer,sizeof(buffer),0);
send(socClient,"执行指令dir！\r\n请继续输入命令>",sizeof("执行指令dir！\r\n请继续输入命令>"),0);  
}
/*quit命令*/
else if(strcmp(recvbuf,"quit")==0)
{
strcat(command,recvbuf);
ShuJu();
printf("打印command:%s",command);
send(socClient,buffer,sizeof(buffer),0);
send(socClient,"执行指令quit！\r\n请继续输入命令>",sizeof("执行指令quit！\r\n请继续输入命令>"),0);  
}
/*date命令*/
else if(strcmp(recvbuf,"date")==0)
{
strcat(command,recvbuf);
ShuJu();
printf("打印command:%s",command);
send(socClient,buffer,sizeof(buffer),0);
send(socClient,"执行指令date！\r\n请继续输入命令>",sizeof("执行指令date！\r\n请继续输入命令>"),0);  
}
/*mem命令*/
else if(strcmp(recvbuf,"mem")==0)
{
strcat(command,recvbuf);
ShuJu();
printf("打印command:%s",command);
send(socClient,buffer,sizeof(buffer),0);
send(socClient,"执行指令mem！\r\n请继续输入命令>",sizeof("执行指令mem！\r\n请继续输入命令>"),0);  
}
/*exit命令*/
else if(strcmp(recvbuf,"exit")==0)
{
strcat(command,recvbuf);
ShuJu();
printf("打印command:%s",command);
send(socClient,buffer,sizeof(buffer),0);
send(socClient,"执行指令exit！\r\n请继续输入命令>",sizeof("执行指令exit！\r\n请继续输入命令>"),0);

}
else send(socClient,"指令错误，请重新输入>",sizeof("指令错误，请重新输入>")+1,0);

strcpy(cmd[i].cmdbuffer,command);
i++;
Sleep(200);
}
closesocket(socClient);
closesocket(socSrv);
WSACleanup();
}
/*程序结束*/
后续还要达到dos更多功能，以及改成非阻塞模式、Linux下运行等。。

解决方案 »

  1.   

    C库有个很牛X的函数叫 system
      

  2.   


    #include <stdio.h>
    #include <stdlib.h>int main( void )
    {   char   psBuffer[128];
       FILE   *pPipe;        /* Run DIR so that it writes its output to a pipe. Open this
             * pipe with read text attribute so that we can read it 
             * like a text file. 
             */   if( (pPipe = _popen( "dir /on /p", "rt" )) == NULL )
          exit( 1 );   /* Read pipe until end of file, or an error occurs. */   while(fgets(psBuffer, 128, pPipe))
       {
          printf(psBuffer);
       }
       /* Close pipe and print return value of pPipe. */
       if (feof( pPipe))
       {
         printf( "\nProcess returned %d\n", _pclose( pPipe ) );
       }
       else
       {
         printf( "Error: Failed to read the pipe to the end.\n");
       }
    }
      

  3.   


    谢谢你的回复！
    改成这样:
    #include <Winsock2.h>
    #include <stdio.h>
    #include<string>
    #include<cstring>
    #include<windows.h>
    #include<Winbase.h>
    #include<stdafx.h>
    #include <fcntl.h>
    #pragma comment(lib,"ws2_32")struct CMD
    {
    char cmdbuffer[50];
    }cmd[20];
    int i=0;
    char buffer[10240]; //执行结果
    char command[50];   //命令接收数组
    void ShuJu()
    {
    FILE   *pPipe;        /* Run DIR so that it writes its output to a pipe. Open this
             * pipe with read text attribute so that we can read it 
             * like a text file. 
             */   if( (pPipe = _popen(command, "rt" )) == NULL )
          exit( 1 );   /* Read pipe until end of file, or an error occurs. */
    memset(buffer,0,10240);
       char psBuffer[1000]=" ";
       while(fgets(psBuffer,1000, pPipe))
       {
          strcat(buffer,psBuffer);
      strcat(buffer,"\r");
       }
    printf(buffer);
       /* Close pipe and print return value of pPipe. */
       if (feof( pPipe))
       {
         printf( "\nProcess returned %d\n", _pclose( pPipe ) );
       }
       else
       {
         printf( "Error: Failed to read the pipe to the end.\n");
       }
    }/*主函数*/
    void main()
    {
    /*创建套接字*/
    WORD wVersionRequested;
    WSADATA wsaData;
    int err;
    wVersionRequested = MAKEWORD(1,1);
    err = WSAStartup(wVersionRequested,&wsaData);
    if (err != 0)
    {
    return;
    }
    if (LOBYTE(wsaData.wVersion) != 1 || HIBYTE(wsaData.wVersion) != 1) 
    {
    WSACleanup();
    return; 
    }
    SOCKET socSrv;
    socSrv = socket(AF_INET,SOCK_STREAM,0);
    SOCKADDR_IN addrSrv;
    addrSrv.sin_addr.S_un.S_addr = htonl(INADDR_ANY);
    addrSrv.sin_family = AF_INET;
    addrSrv.sin_port = htons(6000); bind(socSrv,(SOCKADDR*)&addrSrv,sizeof(addrSrv));
    listen(socSrv,50);
    SOCKADDR_IN addrClient;
    int addrLen = sizeof(SOCKADDR_IN);
    SOCKET socClient = accept(socSrv,(SOCKADDR*)&addrClient,&addrLen); /*身份认证！！接收客户端申请，然后对客户端发送命令输入提示，打开客户端回显*/
    char SS[10],S1[10],S2[10];
    recv(socClient,SS,10,0);
    char ZH[10]="zte";char MM[10]="123"; do{
    send(socClient,"请输入登录账号>",sizeof("请输入登录账号>"),0);
    char *r;
    r=S1;
    while(1)
    {
    recv(socClient,r,sizeof(r),0);
    if(*r=='\r')break;
    if(*r=='\b')
    { char BS1[3];
     BS1[0]=46;
     BS1[1]=8;
     BS1[2]='\0';
     send(socClient,BS1,sizeof(BS1),0);
     r--;
    }
    else r++;
    }
    *r='\0'; /*末尾补\0*/
    send(socClient,"请输入密码>",sizeof("请输入密码>"),0);
    char *t;
    t=S2;
    while(1)
    {
    recv(socClient,t,sizeof(t),0);
    char hx[4];
         hx[0]=46;
     hx[1]=8;
     hx[2]=8;  
     hx[3]='*';   
    send(socClient,hx,sizeof(hx),0);
    if(*t=='\r')
    {char hx1[1];hx1[0]=8;send(socClient,hx1,sizeof(hx1),0);break;}
    if(*t=='\b')
    { char BS2[3];
     BS2[0]=8;
     BS2[1]=46;
     BS2[2]='\0';
     send(socClient,BS2,sizeof(BS2),0);
     t--;
    }
    else t++;
    }
    *t='\0'; /*末尾补\0*/
    }while(strcmp(ZH,S1)!=0||strcmp(MM,S2)!=0);
    send(socClient,"身份验证通过！",sizeof("身份验证通过！"),0);
    /*程序主体，实现远程操作及维护*/
    send(socClient,"\r\n请输入命令>",sizeof("\r\n请输入命令>"),0);
    while(1)
    {
    memset(command,0,50);
    strcpy(command,"Cmd.exe /C ");
    char fx[50];memset(fx,0,50);
    char recvbuf[50]=" ";
    char *p;
    p=recvbuf;
      
    recv(socClient,fx,sizeof(fx),0);
    if(fx[0]==27&&fx[1]==91)
    {
    switch(fx[2])
    {
    case 65:
    i--;
    printf("数组fx为：%s",fx);
    send(socClient,cmd[i].cmdbuffer,sizeof(cmd[i].cmdbuffer),0);
    strcat(command,cmd[i].cmdbuffer);
    break;
    case 66:
    i++;
    send(socClient,cmd[i].cmdbuffer,sizeof(cmd[i].cmdbuffer),0);
    strcat(command,cmd[i].cmdbuffer);
    break;
    case 67:
    printf("数组fx为：%s",fx);
    send(socClient,"判断出是向右键！\r\n继续输入命令>",sizeof("判断出是向右键！\r\n继续输入命令>"),0);
    break;
    case 68:
    printf("数组fx为：%s",fx);
    send(socClient,"判断出是向左键！\r\n继续输入命令>",sizeof("判断出是向左键！\r\n继续输入命令>"),0);
    break;
    }
    send(socClient,"\r\n",sizeof("\r\n"),0);
    Sleep(1000);
    ShuJu();
    printf("打印command:%s",command);
    send(socClient,buffer,sizeof(buffer),0);
    send(socClient,"指令执行完毕！\r\n请继续输入命令>",sizeof("指令执行完毕！\r\n请继续输入命令>"),0);
    continue;
    }
    recvbuf[0]=fx[0];
    p++;
    /*接收客户端发来的命令*/
    while(1)
    {
    recv(socClient,p,sizeof(p),0);
    if(*p=='\r')break;
    else if(*p=='\b')
    { char BS[3];
         BS[0]=46;
     BS[1]=8;
     BS[2]='\0'; 
          send(socClient,BS,sizeof(BS),0);
     p--;
    }
    else p++;
    int STRLEN=strlen(recvbuf);
    printf("数组buf为：%s;数组长度为：%d.\n",recvbuf,STRLEN);
    }
    *p='\0';      /*末尾补'\0'，命令接受完毕！*/

    /*对命令解析，执行并返回结果*/
    /*调用windows的API函数执行一些Dos操作*/


    /*help命令*/
    if(strcmp(recvbuf,"?")==0||strcmp(recvbuf,"help")==0)
    {
    strcat(command,recvbuf);
    ShuJu();printf("打印command:%s",command);
    send(socClient,buffer,sizeof(buffer),0);
    send(socClient,"指令执行完毕！\r\n请继续输入命令>",sizeof("指令执行完毕！\r\n请继续输入命令>"),0);
    }
    /*ipconfig命令*/
    else if(strcmp(recvbuf,"ipconfig")==0)
    {
    strcat(command,recvbuf);
    ShuJu();printf("打印command:%s",command);
    send(socClient,buffer,sizeof(buffer),0);
    send(socClient,"指令执行完毕！\r\n请继续输入命令>",sizeof("指令执行完毕！\r\n请继续输入命令>"),0);
    }
    /*ipconfig /all命令*/
    else if(strcmp(recvbuf,"ipconfig /all")==0)
    {
    strcat(command,recvbuf);
    ShuJu();
    printf("打印command:%s",command);
    send(socClient,buffer,sizeof(buffer),0);
    send(socClient,"指令执行完毕！\r\n请继续输入命令>",sizeof("指令执行完毕！\r\n请继续输入命令>"),0);
    }
    /*cd ..命令*/
    else if(strcmp(recvbuf,"cd ..")==0)
    {
    strcat(command,recvbuf);
    send(socClient,buffer,sizeof(buffer),0);
    send(socClient,"指令执行完毕！\r\n请继续输入命令>",sizeof("指令执行完毕！\r\n请继续输入命令>"),0);

    }
    /*telnet命令*/
    else if(strcmp(recvbuf,"telnet")==0)
    {
    strcat(command,recvbuf);
    ShuJu();
    printf("打印command:%s",command);
    send(socClient,buffer,sizeof(buffer),0);
    send(socClient,"指令执行完毕！\r\n请继续输入命令>",sizeof("指令执行完毕！\r\n请继续输入命令>"),0);
    }
    /*ver命令*/
    else if(strcmp(recvbuf,"ver")==0)
    {
    strcat(command,recvbuf);
    ShuJu();
    printf("打印command:%s",command);
    send(socClient,buffer,sizeof(buffer),0);
    send(socClient,"指令执行完毕！\r\n请继续输入命令>",sizeof("指令执行完毕！\r\n请继续输入命令>"),0);
    }
    /*dir命令*/
    else if(strcmp(recvbuf,"dir")==0)
    {
    strcat(command,recvbuf);
    ShuJu();
    printf("打印command:%s",command);
    send(socClient,buffer,sizeof(buffer),0);
    send(socClient,"指令执行完毕！\r\n请继续输入命令>",sizeof("指令执行完毕！\r\n请继续输入命令>"),0);
    }
    /*quit命令*/
    else if(strcmp(recvbuf,"quit")==0)
    {
    strcat(command,recvbuf);
    ShuJu();
    printf("打印command:%s",command);
    send(socClient,buffer,sizeof(buffer),0);
    send(socClient,"指令执行完毕！\r\n请继续输入命令>",sizeof("指令执行完毕！\r\n请继续输入命令>"),0);
    }
    /*date命令*/
    else if(strcmp(recvbuf,"date")==0)
    {
    strcat(command,recvbuf);
    ShuJu();
    printf("打印command:%s",command);
    send(socClient,buffer,sizeof(buffer),0);
    send(socClient,"指令执行完毕！\r\n请继续输入命令>",sizeof("指令执行完毕！\r\n请继续输入命令>"),0);
    }
    /*mem命令*/
    else if(strcmp(recvbuf,"mem")==0)
    {
    strcat(command,recvbuf);
    ShuJu();
    printf("打印command:%s",command);
    send(socClient,buffer,sizeof(buffer),0);
    send(socClient,"指令执行完毕！\r\n请继续输入命令>",sizeof("指令执行完毕！\r\n请继续输入命令>"),0);
    }
    /*exit命令*/
    else if(strcmp(recvbuf,"exit")==0)
    {
    strcat(command,recvbuf);
    ShuJu();
    printf("打印command:%s",command);
    send(socClient,buffer,sizeof(buffer),0);
    send(socClient,"指令执行完毕！\r\n请继续输入命令>",sizeof("指令执行完毕！\r\n请继续输入命令>"),0);
    }
    else send(socClient,"指令错误，请重新输入>",sizeof("指令错误，请重新输入>")+1,0);
    if(i==20)i=0;
    memset(cmd[i].cmdbuffer,0,50);
    strcpy(cmd[i].cmdbuffer,recvbuf);
    i++;
    }
    closesocket(socClient);
    closesocket(socSrv);
    WSACleanup();
    }
    /*程序结束*/
    有点小问题“？”和“help”执行结果传不过来、、、
    PS：这样的代码结构 能用在一些软件的远程维护上么？？怎么提升质量？ 本人小菜，求指点！！