C++实现邮件群发的方法

#include "stdafx.h"#include <windows.h>#include <windowsx.h>#include "Resource.h"#include "TabDlg1.h"#include "winsock2.h"#define MAXSTRING 10000static int flag=0;     //标记是否群发TCHAR* pTitle = NULL;     //指向标题文件内容的指针HANDLE hThread=NULL;     //线程返回句柄long i=0;        //列表控件“行”计数static long sendNum=1;    //发送邮件数量#pragma comment(lib,"WSOCK32.LIB")extern TCHAR tcRunPath[MAX_PATH];  //程序当前路径目录extern TCHAR shortPath[MAX_PATH];  //文件路径，TAB2中的全局变量extern TCHAR titlePath[256];   //邮件标题文件路径extern TCHAR mtPath[256];    //邮件内容文件路径extern TCHAR sendListPath[MAX_PATH]; //发送列表文件路径extern BOOL attach;     //是否添加了附件extern TCHAR file[MAXSTRING];   //附件部份代码BOOL WINAPI TAB1_Proc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam){ switch(uMsg) {  HANDLE_MSG(hWnd, WM_INITDIALOG, TAB1_OnInitDialog);  HANDLE_MSG(hWnd, WM_COMMAND, TAB1_OnCommand);  HANDLE_MSG(hWnd,WM_CLOSE, TAB1_OnClose); } return FALSE;}BOOL TAB1_OnInitDialog(HWND hwnd, HWND hwndFocus, LPARAM lParam){ InitLVColumn(hwnd); InitComboBox(hwnd); return TRUE;}void TAB1_OnCommand(HWND hwnd, int id, HWND hwndCtl, UINT codeNotify){  IsChecked(hwnd);   //判断勾选框是否被勾选 IsRadioChecked(hwnd); //RADIO控件是否被选择 switch(id) {  case IDC_MAIL_TEST:  {     if(IsDlgButtonChecked(hwnd,IDC_RADIO_QQ)!=BST_CHECKED && IsDlgButtonChecked(hwnd,IDC_RADIO_163)!=BST_CHECKED)   {    MessageBox(hwnd,TEXT("请选择发QQ邮箱或163信箱"),"",MB_OK);    return;   }   else   {    flag=0;    hThread=CreateThread(NULL,0,ThreadFunc,hwnd,0,0);   }  }  break;  case IDC_BUTTON_START:  {     if(IsDlgButtonChecked(hwnd,IDC_RADIO_QQ)!=BST_CHECKED && IsDlgButtonChecked(hwnd,IDC_RADIO_163)!=BST_CHECKED)   {    MessageBox(hwnd,TEXT("请选择发QQ邮箱或163信箱"),"",MB_OK);    return;   }   else   {    flag=1;    hThread=CreateThread(NULL,0,ThreadFunc,hwnd,0,0);   }  }  break;  case IDC_BUTTON_PAUSE:  {      if(NULL!=hThread)   {    SuspendThread(hThread);    }   else   {    return;   }  }  break;  case IDC_BUTTON_RESUME:  {      if(NULL!=hThread)   {    ResumeThread(hThread);    }   else   {    return;   }  }  break;  default:  break; }}void TAB1_OnClose(HWND hwnd){ EndDialog(hwnd, 0);}int InitLVColumn(HWND hwnd)    //列表初始化设置,视图选为报表视图{ LVCOLUMN lvColumn; MyLVColumn MyColumn[2] = {{TEXT("编号"), 0x30, LVCFMT_CENTER},{TEXT("邮箱帐号"), 0x99, LVCFMT_CENTER}}; lvColumn.mask = LVCF_TEXT|LVCF_FMT|LVCF_WIDTH|LVCF_SUBITEM; DWORD dwStyle =ListView_GetExtendedListViewStyle(GetDlgItem(hwnd, IDC_LIST));   //得到列表当前拓展风格 dwStyle |= LVS_EX_FULLROWSELECT; //选中某行使整行高亮（只适用与report风格的listctrl） dwStyle |= LVS_EX_GRIDLINES;  //网格线（只适用与report风格的listctrl）// dwStyle |= LVS_EX_CHECKBOXES;  //item前生成checkbox控件 ListView_SetExtendedListViewStyle(GetDlgItem(hwnd, IDC_LIST),dwStyle);     //设置列表扩展风格 for(int i = 0; i < 2; i++) {  lvColumn.pszText = MyColumn[i].szColumnName;  lvColumn.cx = MyColumn[i].cx;  lvColumn.fmt = MyColumn[i].fmt;  SendDlgItemMessage(hwnd, IDC_LIST, LVM_INSERTCOLUMN, i, (LPARAM)&lvColumn); }  return 0;}int InitComboBox(HWND hwnd)//窗口控件初始化设置{ HWND hwndCombo=GetDlgItem(hwnd,IDC_COMBO_SLEEPTIME); ComboBox_InsertString(hwndCombo,-1,TEXT("0")); ComboBox_InsertString(hwndCombo,-1,TEXT("1")); ComboBox_InsertString(hwndCombo,-1,TEXT("2")); ComboBox_InsertString(hwndCombo,-1,TEXT("5")); ComboBox_InsertString(hwndCombo,-1,TEXT("10")); ComboBox_InsertString(hwndCombo,-1,TEXT("20")); ComboBox_SetText(hwndCombo,TEXT("0")); SetDlgItemText(hwnd,IDC_EDIT_MAILADD,TEXT("12345678@qq.com")); ComboBox_InsertString(GetDlgItem(hwnd,IDC_COMBO_SMTP),0,TEXT("smtp.qq.com")); ComboBox_InsertString(GetDlgItem(hwnd,IDC_COMBO_SMTP),1,TEXT("smtp.163.com")); ComboBox_SetText(GetDlgItem(hwnd,IDC_COMBO_SMTP),TEXT("smtp.qq.com")); SetDlgItemText(hwnd,IDC_EDIT_MAILPORT,TEXT("25"));  SetDlgItemText(hwnd,IDC_EDIT_USERNAME,TEXT(""));  return 1;}int IsChecked(HWND hwnd)  //checkbox未选中的设置为只读{ if(IsDlgButtonChecked(hwnd,IDC_CHECK_QUNFA)!=BST_CHECKED) {  EnableWindow(GetDlgItem(hwnd, IDC_BUTTON_START), false);  EnableWindow(GetDlgItem(hwnd, IDC_BUTTON_RESUME), false);  EnableWindow(GetDlgItem(hwnd, IDC_BUTTON_PAUSE), false);  return 0; } else {  EnableWindow(GetDlgItem(hwnd, IDC_BUTTON_START), true);  EnableWindow(GetDlgItem(hwnd, IDC_BUTTON_RESUME), true);  EnableWindow(GetDlgItem(hwnd, IDC_BUTTON_PAUSE), true);  return 1; } return 0;}int IsRadioChecked(HWND hwnd) //RADIO控件被选中，则设置相应的SMTP 地址{ if(IsDlgButtonChecked(hwnd,IDC_RADIO_QQ)==BST_CHECKED) {  ComboBox_SetText(GetDlgItem(hwnd,IDC_COMBO_SMTP),TEXT("smtp.qq.com"));  return 1; } if(IsDlgButtonChecked(hwnd,IDC_RADIO_163)==BST_CHECKED) {  ComboBox_SetText(GetDlgItem(hwnd,IDC_COMBO_SMTP),TEXT("smtp.163.com"));  return 2; } return 0;}TCHAR* readText1(HWND hwnd)    //读取文件--邮件发送内容{ int nLen = 0; FILE *pF = fopen(titlePath , "r"); //打开文件 fseek(pF, 0, SEEK_END);    //文件指针移到文件尾 nLen = ftell(pF);     //得到当前指针位置, 即是文件的长度 rewind(pF);       //文件指针恢复到文件头位置 pTitle = (char*) malloc(sizeof(char)*nLen+1);//动态申请空间, 为保存字符串结尾标志/0, 多申请一个字符的空间 if(!pTitle) {  MessageBox(hwnd,TEXT("内存不够!"),"错误",MB_ICONWARNING);  exit(0); } nLen = fread(pTitle, sizeof(char), nLen, pF); pTitle[nLen] = '/0';   //添加字符串结尾标志 if(IsDlgButtonChecked(hwnd,IDC_CHECK_TITLE)==BST_CHECKED) //是否勾选在邮件标题 加入系统当前时间 {  SYSTEMTIME stLocal;  GetLocalTime(&stLocal); //得到系统当前时间  TCHAR strTime[256];  ZeroMemory(strTime,sizeof(strTime)/sizeof(TCHAR));  wsprintf(strTime,"%04u-%02u-%02u %02u:%02u:%02u",stLocal.wYear,stLocal.wMonth,stLocal.wDay,stLocal.wHour,stLocal.wMinute,stLocal.wSecond);  strcat(pTitle,strTime); //在标题后加入系统时间 } fclose(pF);     //关闭文件 TCHAR* pText = NULL; pF = fopen(mtPath , "r"); //打开文件 fseek(pF, 0, SEEK_END);  nLen = ftell(pF);  rewind(pF);  pText = (char*) malloc(sizeof(char)*nLen+1); //动态申请空间, 为保存字符串结尾标志/0, 多申请一个字符的空间 if(!pText) {  MessageBox(hwnd,TEXT("内存不够!"),"错误",MB_ICONWARNING);  exit(0); } nLen = fread(pText, sizeof(char), nLen, pF); pText[nLen] = '/0';   //添加字符串结尾标志 fclose(pF);     //关闭文件 TCHAR chText[MAXSTRING];   TCHAR* encText=base64_encode(pText,strlen(pText));   strcpy(chText,encText);  //BASE64加密结果 free(encText);    //释放指针 free(pText);     //释放空间 return chText;}DWORD WINAPI ThreadFunc(LPVOID lpParam)//发邮件线程{ HWND hwnd=(HWND)lpParam; TCHAR userName[256];    //用户帐号 TCHAR userPassWord[256];   //用户密码 GetDlgItemText(hwnd,IDC_EDIT_USERNAME,userName,sizeof(userName)/sizeof(TCHAR)); GetDlgItemText(hwnd,IDC_EDIT_USERPASSWORD,userPassWord,sizeof(userPassWord)/sizeof(TCHAR)); TCHAR *name=userName;  int i = 0;  int j = strlen(name);  TCHAR *encName = base64_encode(name, j);    //给用户名base64加密编码   ZeroMemory(userName,sizeof(userName)/sizeof(TCHAR));  wsprintf(userName,"%s/n", encName);      //在加编码后加入回车符 TCHAR *passWord=userPassWord;  int k = strlen(passWord);  TCHAR *encPassWord = base64_encode(passWord, k);  //给用户密码base64加密编码     // int len = strlen(enc);  // TCHAR *dec = base64_decode(enc, len);    //反编  ZeroMemory(userPassWord,sizeof(userPassWord)/sizeof(TCHAR));  wsprintf(userPassWord,"%s/n", encPassWord); /*ZeroMemory(userName,sizeof(userName)/sizeof(TCHAR));  wsprintf(userName,"/ndecoded : %s", dec); MessageBox(hwnd,userName,"",MB_OK);*/     //反编译用户名，如果需要，可以把用户名密码反编后发到指定邮箱。 free(encName);           //释放指针 free(encPassWord); //free(dec);  if(1==flag)            //全局标记，点击群发还是测试，1为群发，0为测试 {   HANDLE wFile;   int szId;   TCHAR ch;   TCHAR szState[256];   strcpy(sendListPath,tcRunPath);   strcat(sendListPath,"//SendList.txt");   //拼接全路径及文件名   TCHAR *sFileName=sendListPath;   FILE *fp=fopen(sFileName,"r");   if(fp==NULL)   {    return FALSE;        //打开文件失败，则返回，不读取   }   fseek(fp, 0, SEEK_END);   int length = ftell(fp);      //length为0，则是空的   rewind(fp);         //把指针移回文件头部 还可以用 fseek(fp, 0, SEEK_SET);效果一样   if(length==0)         //判断文件如果为空，则关闭文件，返回，   {    fclose(fp);        //要关闭打开的文件，不然退出时，无法保存    return FALSE;   }   while(!feof(fp))   {     fscanf(fp,"%s/r/n",szState);    SocketQ(hwnd,userName,userPassWord,szState);    TCHAR sTime[256];        unsigned long iTime;    ComboBox_GetText(GetDlgItem(hwnd,IDC_COMBO_SLEEPTIME),sTime,sizeof(sTime)/sizeof(TCHAR));    iTime=atoi(sTime);    iTime=iTime*1000;    Sleep(iTime);   }    fclose(fp); } else {  Socket(hwnd,userName,userPassWord);  } CloseHandle(hThread);  return 0;}void SocketQ(HWND hwnd,TCHAR userName[],TCHAR userPassWord[],TCHAR szState[])//传入加密的用户名跟密码连接163{   /*******************************************************************   使用Socket的程序在使用Socket之前必须调用WSAStartup函数。   该函数的第一个参数指明程序请求使用的Socket版本，   其中高位字节指明副版本、低位字节指明主版本；   操作系统利用第二个参数返回请求的Socket的版本信息。   当一个应用程序调用WSAStartup函数时，操作系统根据请求的Socket版本来搜索相应的Socket库，   然后绑定找到的Socket库到该应用程序中。   以后应用程序就可以调用所请求的Socket库中的其它Socket函数了。   该函数执行成功后返回0。   *****************************************************************/  TCHAR* pText;  pText = readText1(hwnd);  int WSA_return;  WSADATA wsaData;     WSA_return=WSAStartup(MAKEWORD(2,0),&wsaData);   //初始化Socket库    SOCKET sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);//创建SOCKET  hostent* host = NULL;   SOCKADDR_IN sa;  sa.sin_family=AF_INET;         //设置电线连接服务器端的端口  TCHAR cPort[100];  GetDlgItemText(hwnd,IDC_EDIT_MAILPORT,cPort,sizeof(cPort)/sizeof(TCHAR));  int iPort=atoi(cPort);  sa.sin_port = htons(iPort);     //sa.sin_addr.S_un.S_addr = inet_addr("123.58.178.203");//可以写死IP地址      HOSTENT *host_entry;         //存放主机域名，如smtp.qq.com   TCHAR host_name[256]="";   ZeroMemory(host_name,sizeof(host_name)/sizeof(TCHAR));    ComboBox_GetText(GetDlgItem(hwnd,IDC_COMBO_SMTP),host_name,sizeof(host_name)/sizeof(TCHAR));   TCHAR str_ipAdd[256];   if(WSA_return==0)   {   host_entry=gethostbyname(host_name);     // 要解析的域名或主机名    if(host_entry!=NULL)   {   wsprintf(str_ipAdd,"%d.%d.%d.%d",    (host_entry->h_addr_list[0][0]&0x00ff),    (host_entry->h_addr_list[0][1]&0x00ff),    (host_entry->h_addr_list[0][2]&0x00ff),    (host_entry->h_addr_list[0][3]&0x00ff));       }   }  sa.sin_addr.S_un.S_addr = inet_addr(str_ipAdd);   //得到域名IP地址  if(connect(sock,(SOCKADDR *)&sa,sizeof(sa))==SOCKET_ERROR)  {  ShowError();  return;  }  TCHAR buffer[256];          //对话过程    ZeroMemory(buffer,sizeof(buffer)/sizeof(TCHAR));  int iRet=recv(sock,buffer,256,0);      //接收问候语    if(SOCKET_ERROR==iRet)  {   ShowError();      return;  }  TCHAR Hello[] = "HELO SMTP/r/n";      //注意不能忘了末尾的回车    send(sock,Hello,lstrlen(Hello),0);   ZeroMemory(buffer,sizeof(buffer)/sizeof(TCHAR));   iRet=recv(sock,buffer,256,0);  if(SOCKET_ERROR==iRet)  {   ShowError();      return;  }  TCHAR Ehlo[] = "EHLO SMTP/r/n";    send(sock,Ehlo,lstrlen(Ehlo),0);   ZeroMemory(buffer,sizeof(buffer)/sizeof(TCHAR));   iRet=recv(sock,buffer,256,0);  if(SOCKET_ERROR==iRet)  {   ShowError();      return;  }  TCHAR login[] = "AUTH LOGIN/r/n";      //登陆命令  send(sock,login,lstrlen(login),0);   ZeroMemory(buffer,sizeof(buffer)/sizeof(TCHAR));   iRet=recv(sock,buffer,256,0);  if(SOCKET_ERROR==iRet)  {   ShowError();      return;  }  if(IsDlgButtonChecked(hwnd,IDC_RADIO_QQ)==BST_CHECKED)  {   strcat(userName,"/r/n");   send(sock,userName,lstrlen(userName),0);   //发送加密的用户名   ZeroMemory(buffer,sizeof(buffer)/sizeof(TCHAR));    iRet=recv(sock,buffer,256,0);   if(SOCKET_ERROR==iRet)   {    ShowError();       return;   }   strcat(userPassWord,"/r/n");   send(sock,userPassWord,lstrlen(userPassWord),0); //发送加密的密码   ZeroMemory(buffer,sizeof(buffer)/sizeof(TCHAR));    iRet=recv(sock,buffer,256,0);   if(SOCKET_ERROR==iRet)   {    ShowError();       return;   }  }  if(IsDlgButtonChecked(hwnd,IDC_RADIO_163)==BST_CHECKED)  {   send(sock,userName,lstrlen(userName),0);   //发送加密的用户名   ZeroMemory(buffer,sizeof(buffer)/sizeof(TCHAR));    iRet=recv(sock,buffer,256,0);   if(SOCKET_ERROR==iRet)   {    ShowError();       return;   }   send(sock,userPassWord,lstrlen(userPassWord),0); //发送加密的密码   ZeroMemory(buffer,sizeof(buffer)/sizeof(TCHAR));    iRet=recv(sock,buffer,256,0);   if(SOCKET_ERROR==iRet)   {    ShowError();       return;   }  }  TCHAR userF[256];  TCHAR userL[256];  TCHAR temp[256];  GetDlgItemText(hwnd,IDC_EDIT_USERNAME,userF,sizeof(userF)/sizeof(TCHAR));   ComboBox_GetText(GetDlgItem(hwnd,IDC_COMBO_SMTP),temp,sizeof(host_name)/sizeof(TCHAR));  strcat(userF,"@");  strncpy(userL,temp+5,sizeof(userL));  strcat(userF,userL);  TCHAR mailFrom[256];  //MessageBox(hwnd,userF,"",MB_OK);  wsprintf(mailFrom,TEXT("MAIL FROM:<%s>/r/n"),userF);  send(sock,mailFrom,lstrlen(mailFrom),0);  ZeroMemory(buffer,sizeof(buffer)/sizeof(TCHAR));   iRet=recv(sock,buffer,256,0);  if(SOCKET_ERROR==iRet)  {   ShowError();      return;  }   TCHAR mailTo[256];   wsprintf(mailTo,TEXT("RCPT TO:<%s>/r/n"),szState);   send(sock,mailTo,lstrlen(mailTo),0);   ZeroMemory(buffer,sizeof(buffer)/sizeof(TCHAR));    iRet=recv(sock,buffer,256,0);   if(SOCKET_ERROR==iRet)   {    ShowError();       return;   }  TCHAR dataCommad[]="DATA/r/n";  send(sock,dataCommad,lstrlen(dataCommad),0);   ZeroMemory(buffer,sizeof(buffer)/sizeof(TCHAR));   iRet=recv(sock,buffer,256,0);  if(SOCKET_ERROR==iRet)  {   ShowError();      return;  }  //下面是发送正文及附件部份  TCHAR data[50000];  TCHAR SetMailHead[1024];      //邮件头部信息  wsprintf(SetMailHead,TEXT("To:%s/r/nFrom:%s/r/nSubject: %s/r/n"         "Date:2012-8-24/r/nX-Mailer:Kevin's mailer/r/nMIME-Version:1.0/r/n"         "Content-Type: multipart/mixed;/r/n"         " boundary=/"----=_NextPart_5039E410_D41071F0_120ABDFB/";/r/n"         "This is a multi-part message in MIME format./r/n/r/n"         "------=_NextPart_5039E410_D41071F0_120ABDFB/r/n"         "Content-Type: multipart/alternative;/r/n"         " boundary=/"----=_NextPart_5039E410_D41071F0_53510C95/";/r/n/r/n"         "------=_NextPart_5039E410_D41071F0_53510C95/r/n"         "Content-Type: text/plain;/r charset=/"gb2312/"/r/n"         "Content-Transfer-Encoding: base64/r/n/r/n"),szState,userF,pTitle);  strcat(SetMailHead,pText);     //邮件头部再加上正文文本内容  strcat(SetMailHead,TEXT("/r/n/r/n"));  strcpy(data,SetMailHead);  TCHAR SetMailHtml[1024];     //邮件HTML代码部份  wsprintf(SetMailHtml,TEXT("------=_NextPart_5039E410_D41071F0_53510C95/r/n"         "Content-Type: text/html;/r/n"         " charset=/"gb2312/"/r/n"         "Content-Transfer-Encoding: base64/r/n/r/n"));  strcat(SetMailHtml,pText);     //加入邮件内容  strcat(SetMailHtml,TEXT("/r/n/r/n------=_NextPart_5039E410_D41071F0_53510C95--/r/n/r/n"));  strcat(data,SetMailHtml);  if(TRUE==attach)       //判断是否添加了附件路径  {   strcat(data,file);      //加入附件部份代码   strcat(data,TEXT("------=_NextPart_5039E410_D41071F0_120ABDFB--/r/n"));  }  send(sock,data,lstrlen(data),0);  TCHAR cN[]="/r/n./r/n";     //邮件结束标志  send(sock,cN,lstrlen(cN),0);  ZeroMemory(buffer,sizeof(buffer)/sizeof(TCHAR));   iRet=recv(sock,buffer,256,0);   if(SOCKET_ERROR==iRet)   {    ShowError();       return;   }  TCHAR cQuit[] = "QUIT/r/n";     //退出命令  send(sock,cQuit,lstrlen(cQuit),0);   ZeroMemory(buffer,sizeof(buffer)/sizeof(TCHAR));   iRet=recv(sock,buffer,256,0);  TCHAR cNum[256];  if(SOCKET_ERROR==iRet)  {   ShowError();      return;  }    else  {    TCHAR str[256];      //输出已发送列表   wsprintf(str,"%i",sendNum);   LVITEM lvItem;   lvItem.mask = LVIF_TEXT;   lvItem.iSubItem = 0;   int ItemCount = ListView_GetItemCount(GetDlgItem(hwnd, IDC_LIST));   lvItem.iItem = ItemCount;    lvItem.pszText = str;   SendDlgItemMessage(hwnd, IDC_LIST, LVM_INSERTITEM, 0, (LPARAM)&lvItem);    ListView_SetItemText(GetDlgItem(hwnd, IDC_LIST), i++, 1, szState);          sendNum++;  }  free(pTitle);        //释放空间    closesocket(sock);       //关闭SOCKET   WSACleanup();  return;}void Socket(HWND hwnd,TCHAR userName[],TCHAR userPassWord[])//传入加密的用户名跟密码连接163{  TCHAR* pText;  pText = readText1(hwnd);  int WSA_return;  WSADATA wsaData;     WSA_return=WSAStartup(MAKEWORD(2,0),&wsaData);//初始化Socket库  SOCKET sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);  hostent* host = NULL;   SOCKADDR_IN sa;  sa.sin_family=AF_INET;      //设置电线连接服务器端的端口  TCHAR cPort[100];  GetDlgItemText(hwnd,IDC_EDIT_MAILPORT,cPort,sizeof(cPort)/sizeof(TCHAR));  int iPort=atoi(cPort);  sa.sin_port = htons(iPort);     HOSTENT *host_entry;   TCHAR host_name[256]="";   ZeroMemory(host_name,sizeof(host_name)/sizeof(TCHAR));    ComboBox_GetText(GetDlgItem(hwnd,IDC_COMBO_SMTP),host_name,sizeof(host_name)/sizeof(TCHAR));   TCHAR str_ipAdd[256];   if(WSA_return==0)   {      host_entry=gethostbyname(host_name); // 即要解析的域名或主机名     if(host_entry!=NULL)    {     wsprintf(str_ipAdd,"%d.%d.%d.%d",    (host_entry->h_addr_list[0][0]&0x00ff),    (host_entry->h_addr_list[0][1]&0x00ff),    (host_entry->h_addr_list[0][2]&0x00ff),    (host_entry->h_addr_list[0][3]&0x00ff));         }   }  sa.sin_addr.S_un.S_addr = inet_addr(str_ipAdd);    if(connect(sock,(SOCKADDR *)&sa,sizeof(sa))==SOCKET_ERROR)  {   ShowError();   return;   }  TCHAR buffer[256];      //对话过程   ZeroMemory(buffer,sizeof(buffer)/sizeof(TCHAR));    int iRet=recv(sock,buffer,256,0);  //接收问候语   if(SOCKET_ERROR==iRet)  {   ShowError();      return;  }  TCHAR Hello[] = "HELO SMTP/r/n";  //注意不能忘了末尾的回车   send(sock,Hello,lstrlen(Hello),0);   ZeroMemory(buffer,sizeof(buffer)/sizeof(TCHAR));   iRet=recv(sock,buffer,256,0);  if(SOCKET_ERROR==iRet)  {   ShowError();      return;  }  TCHAR Ehlo[] = "EHLO SMTP/r/n";    send(sock,Ehlo,lstrlen(Ehlo),0);   ZeroMemory(buffer,sizeof(buffer)/sizeof(TCHAR));   iRet=recv(sock,buffer,256,0);  if(SOCKET_ERROR==iRet)  {   ShowError();      return;  }  TCHAR login[] = "AUTH LOGIN/r/n";      //登陆命令  send(sock,login,lstrlen(login),0);   ZeroMemory(buffer,sizeof(buffer)/sizeof(TCHAR));   iRet=recv(sock,buffer,256,0);  if(SOCKET_ERROR==iRet)  {   ShowError();      return;  }  if(IsDlgButtonChecked(hwnd,IDC_RADIO_QQ)==BST_CHECKED)  {   strcat(userName,"/r/n");   send(sock,userName,lstrlen(userName),0);   //发送加密的用户名   ZeroMemory(buffer,sizeof(buffer)/sizeof(TCHAR));    iRet=recv(sock,buffer,256,0);   if(SOCKET_ERROR==iRet)   {    ShowError();       return;   }   strcat(userPassWord,"/r/n");   send(sock,userPassWord,lstrlen(userPassWord),0); //发送加密的密码   ZeroMemory(buffer,sizeof(buffer)/sizeof(TCHAR));    iRet=recv(sock,buffer,256,0);   if(SOCKET_ERROR==iRet)   {    ShowError();       return;   }  }  if(IsDlgButtonChecked(hwnd,IDC_RADIO_163)==BST_CHECKED)  {   send(sock,userName,lstrlen(userName),0);   //发送加密的用户名   ZeroMemory(buffer,sizeof(buffer)/sizeof(TCHAR));    iRet=recv(sock,buffer,256,0);   if(SOCKET_ERROR==iRet)   {    ShowError();       return;   }   send(sock,userPassWord,lstrlen(userPassWord),0); //发送加密的密码   ZeroMemory(buffer,sizeof(buffer)/sizeof(TCHAR));    iRet=recv(sock,buffer,256,0);   if(SOCKET_ERROR==iRet)   {    ShowError();       return;   }  }  TCHAR userF[256];  TCHAR userL[256];  TCHAR temp[256];  GetDlgItemText(hwnd,IDC_EDIT_USERNAME,userF,sizeof(userF)/sizeof(TCHAR));   ComboBox_GetText(GetDlgItem(hwnd,IDC_COMBO_SMTP),temp,sizeof(host_name)/sizeof(TCHAR));  strcat(userF,"@");  strncpy(userL,temp+5,sizeof(userL));  strcat(userF,userL);  TCHAR mailFrom[256];  //MessageBox(hwnd,userF,"",MB_OK);  wsprintf(mailFrom,TEXT("MAIL FROM:<%s>/r/n"),userF);  send(sock,mailFrom,lstrlen(mailFrom),0);  ZeroMemory(buffer,sizeof(buffer)/sizeof(TCHAR));   iRet=recv(sock,buffer,256,0);  if(SOCKET_ERROR==iRet)  {   ShowError();      return;  }   TCHAR mailAdd[256];   GetDlgItemText(hwnd,IDC_EDIT_MAILADD,mailAdd,sizeof(mailAdd)/sizeof(TCHAR));   TCHAR mailTo[256];   wsprintf(mailTo,TEXT("RCPT TO:<%s>/r/n"),mailAdd);   send(sock,mailTo,lstrlen(mailTo),0);   ZeroMemory(buffer,sizeof(buffer)/sizeof(TCHAR));    iRet=recv(sock,buffer,256,0);   if(SOCKET_ERROR==iRet)   {    ShowError();       return;   }  TCHAR dataCommad[]="DATA/r/n";  send(sock,dataCommad,lstrlen(dataCommad),0);   ZeroMemory(buffer,sizeof(buffer)/sizeof(TCHAR));   iRet=recv(sock,buffer,256,0);  if(SOCKET_ERROR==iRet)  {   ShowError();      return;  }  //下面是发送正文及附件部份  TCHAR data[50000];  TCHAR SetMailHead[1024];      //邮件头部信息  wsprintf(SetMailHead,TEXT("To:%s/r/nFrom:%s/r/nSubject: %s/r/n"         "Date:2012-8-24/r/nX-Mailer:Kevin's mailer/r/nMIME-Version:1.0/r/n"         "Content-Type: multipart/mixed;/r/n"         " boundary=/"----=_NextPart_5039E410_D41071F0_120ABDFB/";/r/n"         "This is a multi-part message in MIME format./r/n/r/n"         "------=_NextPart_5039E410_D41071F0_120ABDFB/r/n"         "Content-Type: multipart/alternative;/r/n"         " boundary=/"----=_NextPart_5039E410_D41071F0_53510C95/";/r/n/r/n"         "------=_NextPart_5039E410_D41071F0_53510C95/r/n"         "Content-Type: text/plain;/r charset=/"gb2312/"/r/n"         "Content-Transfer-Encoding: base64/r/n/r/n"),mailAdd,userF,pTitle);  strcat(SetMailHead,pText);      //邮件头部再加上正文文本内容  strcat(SetMailHead,TEXT("/r/n/r/n"));  strcpy(data,SetMailHead);  TCHAR SetMailHtml[1024];      //邮件HTML代码部份  wsprintf(SetMailHtml,TEXT("------=_NextPart_5039E410_D41071F0_53510C95/r/n"         "Content-Type: text/html;/r/n"         " charset=/"gb2312/"/r/n"         "Content-Transfer-Encoding: base64/r/n/r/n"));  strcat(SetMailHtml,pText);      //加入邮件内容  strcat(SetMailHtml,TEXT("/r/n/r/n------=_NextPart_5039E410_D41071F0_53510C95--/r/n/r/n"));  strcat(data,SetMailHtml);  if(TRUE==attach)        //判断是否添加了附件路径  {   strcat(data,file);       //加入附件部份代码   strcat(data,TEXT("------=_NextPart_5039E410_D41071F0_120ABDFB--/r/n"));  }  send(sock,data,lstrlen(data),0);  TCHAR cN[]="/r/n./r/n";      //邮件结束标志  send(sock,cN,lstrlen(cN),0);  ZeroMemory(buffer,sizeof(buffer)/sizeof(TCHAR));   iRet=recv(sock,buffer,256,0);  if(SOCKET_ERROR==iRet)  {   ShowError();      return;  }  TCHAR cQuit[] = "QUIT/r/n";      //退出命令  send(sock,cQuit,lstrlen(cQuit),0);   ZeroMemory(buffer,sizeof(buffer)/sizeof(TCHAR));   iRet=recv(sock,buffer,256,0);  TCHAR cNum[256];  if(SOCKET_ERROR==iRet)  {   ShowError();      return;  }    else  {     MessageBox(hwnd,TEXT("测试发送成功"),TEXT("恭喜"),MB_OK);  }   free(pTitle);         //释放空间  closesocket(sock);        //关闭SOCK    WSACleanup();  return;}void ShowError(){ TCHAR* lpMsgBuf; FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|  //自动分配消息缓冲区 FORMAT_MESSAGE_FROM_SYSTEM,      //从系统获取信息 NULL,GetLastError(),        //获取错误信息标识 MAKELANGID(LANG_NEUTRAL,SUBLANG_DEFAULT),   //使用系统缺省语言 (LPTSTR)&lpMsgBuf,        //消息缓冲区 0, NULL); MessageBox(NULL,lpMsgBuf,"",MB_ICONERROR); }