怎样使用花生壳域名解析出IP?----即通常所说的"上线"2010年10月05日星期二下午 01:09本例仅为学习.一个写远控的,连上线都不会.一问三不知,还能算是个网络编程的程序员?上线:就是敲门,1台电脑给另外一台电脑敲门,有人在就进去,没人在就回去.这是最基本的常识.方法:用的是原始套接字icmp获取的,其实就是一个ping程序(包括IP与网站名的那种ping,仅IP的不可以)主程序:ping.h与ping.cpp封装好的.直接在你的dlg.cpp程序中调用.其实算不上什么本事,都是抄来的.因为不是搞专业的远控,仅是学习,所以我也没花时间仔细去学这.cpp顺便介绍下花生壳:从/下载花生壳软件,登录后116.209.15.221就是本机现在的外网就是你账号对应的网站,无论你用的是哪一台机器.(那么端口呢?端口指定的一样的).花生壳其它的就不用管了.你只要做一步即可:打开花生壳软件,登录你的账号即可.难吗?不难,很简单的1步--------------------------源代码包括ping.h与ping.cpp,以及外部调用的函数***dlg.cpp----------------------------------------------------------------ping.h--------------------------------------------// Ping.h: interface for the CPing class./////////////////////////////////////////////////////////////////////// /#if !defined(AFX_PING_H__DD196130_22F6_48DA_BAFC_B799A0034437__INCLUD ED_)#define AFX_PING_H__DD196130_22F6_48DA_BAFC_B799A0034437__INCLUDED_#if _MSC_VER > 1000#pragma once#endif // _MSC_VER > 1000#include <winsock2.h>#include <ws2tcpip.h>#include <stdio.h>#include <stdlib.h>#define IP_RECORD_ROUTE 0x7#define DEF_PACKET_SIZE 32#define MAX_PACKET 1024 // Max ICMP packet size#define MAX_IP_HDR_SIZE 60 // Max IP header size w/options#define ICMP_ECHO 8#define ICMP_ECHOREPLY 0#define ICMP_MIN 8 // Minimum 8-byte ICMP packet (header)class CMyPingDlg;typedef struct _iphdr{unsigned int h_len:4; // Length of the headerunsigned int version:4; // Version of IPunsigned char tos; // Type of serviceunsigned short total_len; // Total length of the packetunsigned short ident; // Unique identifierunsigned short frag_and_flags; // Flagsunsigned char ttl; // Time to liveunsigned char proto; // Protocol (TCP, UDP etc)unsigned short checksum; // IP checksumunsigned int sourceIP;unsigned int destIP;} IpHeader;typedef struct _icmphdr{BYTE i_type;BYTE i_code; // Type sub codeUSHORT i_cksum;USHORT i_id;USHORT i_seq;// This is not the standard header, but we reserve space for time ULONG timestamp;} IcmpHeader;//// IP option header - use with socket option IP_OPTIONS//typedef struct _ipoptionhdr{unsigned char code; // Option typeunsigned char len; // Length of option hdrunsigned char ptr; // Offset into optionsunsigned long addr[9]; // List of IP addrs} IpOptionHeader;class CPing{public:void SetConfigure(char * host,BOOL recordrout=FALSE,intsize=DEF_PACKET_SIZE);void DecodeIPOptions(char *buf, int bytes);void Cleanup();void Ping(int timeout =1000);SOCKET m_hSocket;IpOptionHeader m_ipopt;SOCKADDR_IN m_addrDest;SOCKADDR_IN m_addrFrom;char *icmp_data;char *recvbuf;USHORT seq_no ;char *lpdest;int datasize;BOOL m_bRecordRout;CMyPingDlg * m_dlg;CPing(CMyPingDlg *dlg);virtual ~CPing();private:void DecodeICMPHeader(char *buf, int bytes, SOCKADDR_IN* from); USHORT checksum(USHORT *buffer, int size);void FillICMPData(char *icmp_data, int datasize);};#endif// !defined(AFX_PING_H__DD196130_22F6_48DA_BAFC_B799A0034437__INCLUDE D_)-----------------------------------------ping.cpp--------------------------------------------// Ping.cpp: implementation of the CPing class./////////////////////////////////////////////////////////////////////// /#include "stdafx.h"#include "MyPing.h"#include "Ping.h"#include "MyPingDlg.h"#ifdef _DEBUG#undef THIS_FILEstatic char THIS_FILE[]=__FILE__;#define new DEBUG_NEW#endifCString DNS_IP="";///////////////////////////////////////////////////////////////////// /// Construction/Destruction///////////////////////////////////////////////////////////////////// /CPing::CPing(CMyPingDlg * dlg){m_dlg=dlg;icmp_data = NULL;seq_no = 0;recvbuf = NULL;m_bRecordRout = FALSE;lpdest = NULL;datasize = DEF_PACKET_SIZE;WSADATA wsaData;if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0){AfxMessageBox("Sorry, you cannot load socket dll!");return ;}m_hSocket = INVALID_SOCKET;}CPing::~CPing(){if(lpdest)delete []lpdest;}void CPing::Ping(int timeout){m_hSocket = WSASocket (AF_INET, SOCK_RAW, IPPROTO_ICMP, NULL, 0,WSA_FLAG_OVERLAPPED);if (m_hSocket == INVALID_SOCKET){AfxMessageBox("socket 创建失败!");return ;}if (m_bRecordRout){// Setup the IP option header to go out on every ICMP packet //ZeroMemory(&m_ipopt, sizeof(m_ipopt));m_ipopt.code = IP_RECORD_ROUTE; // Record route optionm_ipopt.ptr = 4; // Point to the first addr offset m_ipopt.len = 39; // Length of option headerint ret = setsockopt(m_hSocket, IPPROTO_IP, IP_OPTIONS,(char *)&m_ipopt, sizeof(m_ipopt));if (ret == SOCKET_ERROR){AfxMessageBox("设置socket协议选项错误!");}}// Set the send/recv timeout values//int bread = setsockopt(m_hSocket, SOL_SOCKET, SO_RCVTIMEO,(char*)&timeout, sizeof(timeout));if(bread == SOCKET_ERROR){AfxMessageBox("设置socket接收超时选项错误!");return ;}timeout = 1000;bread = setsockopt(m_hSocket, SOL_SOCKET, SO_SNDTIMEO,(char*)&timeout, sizeof(timeout));if (bread == SOCKET_ERROR){AfxMessageBox("设置socket发送超时选项错误!");return ;}memset(&m_addrDest, 0, sizeof(m_addrDest));//// Resolve the endpoint's name if necessary//m_addrDest.sin_family = AF_INET;if ((m_addrDest.sin_addr.s_addr = inet_addr(lpdest)) ==INADDR_NONE){struct hostent *hp = NULL;if ((hp = gethostbyname(lpdest)) != NULL){memcpy(&(m_addrDest.sin_addr), hp->h_addr, hp->h_length); m_addrDest.sin_family = hp->h_addrtype;// printf("m_addrDest.sin_addr = %s\n",inet_ntoa(m_addrDest.sin_addr));}else{// printf("gethostbyname() failed: %d\n",// WSAGetLastError());AfxMessageBox("输入的主机不存在!");return ;}}//// Create the ICMP packet//datasize += sizeof(IcmpHeader);icmp_data =(char*) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, MAX_PACKET);recvbuf =(char*) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, MAX_PACKET);if (!icmp_data){AfxMessageBox("堆分配错误!");return ;}memset(icmp_data,0,MAX_PACKET);FillICMPData(icmp_data,datasize);//// Start sending/receiving ICMP packets////static int nCount = 0;int nCount=0;while(1){int bwrote;if (nCount++ == 4)break;((IcmpHeader*)icmp_data)->i_cksum = 0;((IcmpHeader*)icmp_data)->timestamp = GetTickCount();((IcmpHeader*)icmp_data)->i_seq = seq_no++;((IcmpHeader*)icmp_data)->i_cksum =checksum((USHORT*)icmp_data, datasize);bwrote = sendto(m_hSocket, icmp_data, datasize, 0,(struct sockaddr*)&m_addrDest,sizeof(m_addrDest));if (bwrote == SOCKET_ERROR){if (WSAGetLastError() == WSAETIMEDOUT){m_dlg->m_result+="Timed out ! \r\n";m_dlg->SetDlgItemText(IDC_EDIT2,m_dlg->m_result);continue;}AfxMessageBox("发送数据函数调用错误!");return ;}if (bwrote < datasize){CString temp;temp.Format("Wrote %d bytes \r\n", bwrote);m_dlg->m_result+=temp;m_dlg->SetDlgItemText(IDC_EDIT2,m_dlg->m_result);}int fromlen = sizeof(m_addrFrom);bread = recvfrom(m_hSocket, recvbuf, MAX_PACKET, 0,(struct sockaddr*)&m_addrFrom, &fromlen);if (bread == SOCKET_ERROR){if (WSAGetLastError() == WSAETIMEDOUT){m_dlg->m_result+="Timed out !\r\n";m_dlg->SetDlgItemText(IDC_EDIT2,m_dlg->m_result); continue;}AfxMessageBox("接收数据函数调用错误!");return ;}DecodeICMPHeader(recvbuf, bread, &m_addrFrom);}if(DNS_IP!="")//不等于空时表示ping通有IP了{AfxMessageBox("解析出域名IP:"+DNS_IP);}}void CPing::Cleanup(){if (m_hSocket != INVALID_SOCKET)closesocket(m_hSocket);HeapFree(GetProcessHeap(), 0, recvbuf);HeapFree(GetProcessHeap(), 0, icmp_data);// WSACleanup();return ;}void CPing::FillICMPData(char *icmp_data, int datasize){IcmpHeader *icmp_hdr = NULL;char *datapart = NULL;icmp_hdr = (IcmpHeader*)icmp_data;icmp_hdr->i_type = ICMP_ECHO; // Request an ICMP echoicmp_hdr->i_code = 0;icmp_hdr->i_id = (USHORT)GetCurrentProcessId();icmp_hdr->i_cksum = 0;icmp_hdr->i_seq = 0;datapart = icmp_data + sizeof(IcmpHeader);}void CPing::DecodeIPOptions(char *buf, int bytes){IpOptionHeader *ipopt = NULL;IN_ADDR inaddr;int i;HOSTENT *host = NULL;ipopt = (IpOptionHeader *)(buf + 20);m_dlg->m_result+="Ping 结果: \r\n";m_dlg->SetDlgItemText(IDC_EDIT2,m_dlg->m_result);for(i = 0; i < (ipopt->ptr / 4) - 1; i++){inaddr.S_un.S_addr = ipopt->addr[i];if (i != 0){// m_dlg->m_result+=" ";m_dlg->SetDlgItemText(IDC_EDIT2,m_dlg->m_result);}host = gethostbyaddr((char *)&inaddr.S_un.S_addr,sizeof(inaddr.S_un.S_addr), AF_INET);CString temp;if (host){temp.Format("(%-15s) %s \r\n", inet_ntoa(inaddr), host->h_name); m_dlg->m_result+=temp;m_dlg->SetDlgItemText(IDC_EDIT2,m_dlg->m_result);}else{temp.Format("(%-15s)\r\n", inet_ntoa(inaddr));m_dlg->m_result+=temp;m_dlg->SetDlgItemText(IDC_EDIT2,m_dlg->m_result);}}return;}USHORT CPing::checksum(USHORT *buffer, int size){unsigned long cksum=0;while (size > 1){cksum += *buffer++;size -= sizeof(USHORT);}if (size){cksum += *(UCHAR*)buffer;}cksum = (cksum >> 16) + (cksum & 0xffff);cksum += (cksum >>16);return (USHORT)(~cksum);}void CPing::SetConfigure(char * host,BOOL recordrout,int size){if(lpdest){delete[] lpdest;lpdest=NULL;}m_bRecordRout = recordrout;datasize = size;lpdest = new char [strlen(host)+1];strcpy(lpdest,host);}void CPing::DecodeICMPHeader(char *buf, int bytes, SOCKADDR_IN *from){IpHeader *iphdr = NULL;IcmpHeader *icmphdr = NULL;unsigned short iphdrlen;DWORD tick;static int icmpcount = 0;iphdr = (IpHeader *)buf;// Number of 32-bit words * 4 = bytesiphdrlen = iphdr->h_len * 4;tick = GetTickCount();if ((iphdrlen == MAX_IP_HDR_SIZE) && (!icmpcount))DecodeIPOptions(buf, bytes);CString temp;if (bytes < iphdrlen + ICMP_MIN){temp.Format("Too few bytes from %s \r\n",inet_ntoa(from->sin_addr)); m_dlg->m_result+=temp;m_dlg->SetDlgItemText(IDC_EDIT2,m_dlg->m_result);}icmphdr = (IcmpHeader*)(buf + iphdrlen);if (icmphdr->i_type != ICMP_ECHOREPLY){temp.Format("nonecho type %d recvd \r\n", icmphdr->i_type);m_dlg->m_result+=temp;m_dlg->SetDlgItemText(IDC_EDIT2,m_dlg->m_result);return;}// Make sure this is an ICMP reply to something we sent!//if (icmphdr->i_id != (USHORT)GetCurrentProcessId()){temp.Format("someone else's packet! \r\n");m_dlg->m_result+=temp;m_dlg->SetDlgItemText(IDC_EDIT2,m_dlg->m_result);return ;}DNS_IP=inet_ntoa(from->sin_addr);temp.Format("%d bytes from %s: \r\n", bytes, inet_ntoa(from->sin_addr)); m_dlg->m_result+=temp;temp.Format(" icmp_seq = %d. \r\n", icmphdr->i_seq);m_dlg->m_result+=temp;temp.Format(" time: %d ms \r\n", tick - icmphdr->timestamp);m_dlg->m_result+=temp;m_dlg->SetDlgItemText(IDC_EDIT2,m_dlg->m_result);icmpcount++;return;}---------------------外部调用的函数***dlg.cpp-----------------------extern CString DNS_IP;void CMyPingDlg::OnPing(){// TODO: Add your control notification handler code hereCButton* checkbox=(CButton*)GetDlgItem(IDC_CHECK_ROUTE);int state=checkbox->GetCheck();char host[100];GetDlgItemText(IDC_HOST,host,100);m_pinger.SetConfigure(host,state);m_pinger.Ping();m_result+="ping 完成!\r\n--------------------\r\n";SetDlgItemText(IDC_EDIT2,m_result);UpdateData(TRUE);m_dnsip=DNS_IP;UpdateData(FALSE);m_pinger.Cleanup();}附注1:源程序已上传至邮箱,即取即用.本例有个特点:封装性特别好.ping.h与ping.cpp直接包含进去,然后把***dlg.cpp中按钮响应的代码添加进去,就可以了附注2:在次申明:本例仅为学习.来源ping程序的扩展。
