发邮件纯文本C代码 控制台 很简单的代码

#include <windows.h> #include <winsock.h> #include <assert.h> #include <iostream> #include <string> #include <stdio.h> #include <ctime> #pragma comment(lib,"WS2_32.lib") using namespace std; //base64编码 string Base64Encode(LPCTSTR lpszSrc); //base64解码 string Base64Decode(LPCTSTR lpszSrc); int main() { //1.首先需要连接邮件服务器 这里用socket 邮件服务器端口 25 WSADATA Wsa; //进行WINSOCK的设置 WSAStartup(0x0101,&Wsa); SOCKET s = socket(AF_INET,SOCK_STREAM,IPPROTO_IP); SOCKADDR_IN sin; LPHOSTENT lphost = gethostbyname("smtp.163.com");//这里是用网易的邮件服务器 也可以修改 if(lphost) sin.sin_addr.s_addr = ((LPIN_ADDR)lphost->h_addr)->s_addr; else { printf("%s\n","获取地址失败"); return 1; } sin.sin_family = AF_INET; //注意邮件服务器的侦听端口 25 sin.sin_port = htons(IPPORT_SMTP); //连接服务器 if(connect(s,(LPSOCKADDR)&sin,sizeof(sin))==SOCKET_ERROR) { printf("%s\n","连接错误"); return 1; } printf("%s\n","连接成功"); //接收服务器初次回应 char buff[1024]; memset(buff,0,sizeof(buff)); recv(s,buff,sizeof(buff),0); printf("服务说:%s\n",buff); /////上面已经完成连接了///// string szLine="\r\n";//相当于你按下回车 //2.现在就是和服务器对话了 //问候服务器 string szHelo = "HELO smtp.163.com" + szLine; printf("我说:%s\n",szHelo.c_str()); send(s,szHelo.c_str(),szHelo.length(),0); memset(buff,0,sizeof(buff)); recv(s,buff,sizeof(buff),0); printf("服务说:%s\n",buff); //请求验证用户密码(需要编码) string szAL = "auth login" + szLine; //发送验证命令 printf("我说:%s\n",szAL.c_str()); send(s,szAL.c_str(),szAL.length(),0); memset(buff,0,sizeof(buff)); recv(s,buff,sizeof(buff),0); // printf("服务说:%s\n",buff); //服务器会回答说 可以输入帐号 //发送帐号 string szUser; cout<<Base64Decode((LPCTSTR)(buff+4)); cin>>szUser; szUser = Base64Encode(szUser.c_str()) + szLine; //对输入的帐号进行base64编码 send(s,szUser.c_str(),szUser.length(),0); //发送帐号 printf("我说:%s\n",szUser.c_str()); memset(buff,0,sizeof(buff)); recv(s,buff,sizeof(buff),0); // printf("服务说:%s\n",buff); //服务器会回答说 可以输入密码 //发送密码 string szPsw; cout<<Base64Decode((LPCTSTR)(buff+4)); cin>>szPsw; szPsw = Base64Encode(szPsw.c_str()) + szLine; //对输入的密码进行base64编码 send(s,szPsw.c_str(),szPsw.length(),0); //发送密码 printf("我说:%s\n",szPsw.c_str()); memset(buff,0,sizeof(buff)); recv(s,buff,sizeof(buff),0); printf("服务说:%s\n",buff); //然后可以用你登陆的邮箱给其他邮箱发邮件了 string szFrom,szTo; cout<<"from:";//你自己的邮箱 cin>>szFrom; cout<<"to:"; //发送给谁 cin>>szTo; //发送者的地址 string From = "mail from:<"+szFrom+ ">"+ szLine; //收信者地址 string To = "rcpt to:<" + szTo +">" + szLine; //现在确定看谁发的邮件 往哪发 send(s,From.c_str(),From.length(),0);//from printf("我说:%s\n",From.c_str()); memset(buff,0,sizeof(buff)); recv(s,buff,sizeof(buff),0); printf("服务说:%s\n",buff); getchar(); //只是用来暂停一下而已 按任意字母继续 send(s,To.c_str(),To.length(),0); //to printf("我说:%s\n",To.c_str()); memset(buff,0,sizeof(buff)); recv(s,buff,sizeof(buff),0); printf("服务说:%s\n",buff); getchar(); //资料应该都看过了吧命令里的data输入后 表示输入邮件内容了 send(s,"data\r\n",6,0); //DATA 命令发送 printf("我说:%s\n","data"); memset(buff,0,sizeof(buff)); recv(s,buff,sizeof(buff),0); printf("服务说:%s\n",buff); //邮件 下面的信息都是当作内容处理 //邮件头 string szFrom_in = "from:"+szFrom + szLine; string szTo_in = "to:"+szTo + szLine; //发送日期 string szDate_in="Date: Sat, 20 Aug 2011 13:39:29 +0800" + szLine;//这里我就直接写上去日期了 为了方便 //邮件标题 string szSubject_in = "Subject:我是邮件标题" + szLine; //邮件正文 string szBody_in = "我就是传说中的邮件体" + szLine; string szContent = szFrom_in + szTo_in + szDate_in + szSubject_in; szContent += szLine;//添加一个空白行 szContent += szBody_in; //上面是最基本的格式// send(s,szContent.c_str(),szContent.length(),0); //szContent printf("我说:%s\n",szContent.c_str()); memset(buff,0,sizeof(buff)); // recv(s,buff,sizeof(buff),0); // printf("服务说:%s\n",buff); getchar(); //发送完了说明下结束 send(s,".\r\n",3,0); //说明内容结束了 printf("我说:%s\n","."); memset(buff,0,sizeof(buff)); recv(s,buff,sizeof(buff),0); printf("服务说:%s\n",buff); getchar(); //退出服务器连接 send(s,"quit\r\n",6,0); //退出 printf("我说:%s\n","quit"); memset(buff,0,sizeof(buff)); recv(s,buff,sizeof(buff),0); printf("服务说:%s 发送邮件成功\n",buff); return 0; } ////////////////////////////////////////////////////////////////////////// string Base64Decode(LPCTSTR lpszSrc) { assert(lpszSrc != NULL); const unsigned int BASE64_DECODE_TABLE[256] = { 255, 255, 255, 255, 255, 255, 255, 255, // 00 - 07 255, 255, 255, 255, 255, 255, 255, 255, // 08 - 15 255, 255, 255, 255, 255, 255, 255, 255, // 16 - 23 255, 255, 255, 255, 255, 255, 255, 255, // 24 - 31 255, 255, 255, 255, 255, 255, 255, 255, // 32 - 39 255, 255, 255, 62, 255, 255, 255, 63, // 40 - 47 52, 53, 54, 55, 56, 57, 58, 59, // 48 - 55 60, 61, 255, 255, 255, 255, 255, 255, // 56 - 63 255, 0, 1, 2, 3, 4, 5, 6, // 64 - 71 7, 8, 9, 10, 11, 12, 13, 14, // 72 - 79 15, 16, 17, 18, 19, 20, 21, 22, // 80 - 87 23, 24, 25, 255, 255, 255, 255, 255, // 88 - 95 255, 26, 27, 28, 29, 30, 31, 32, // 96 - 103 33, 34, 35, 36, 37, 38, 39, 40, // 104 - 111 41, 42, 43, 44, 45, 46, 47, 48, // 112 - 119 49, 50, 51, 255, 255, 255, 255, 255, // 120 - 127 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }; const int nSrcCount=(int)lstrlen(lpszSrc); int nSize=nSrcCount/4*3; if(lpszSrc[nSrcCount-1]=='=') nSize--; if(lpszSrc[nSrcCount-2]=='=') nSize--; char* pOutBuffer=new char[nSize+3]; ZeroMemory(pOutBuffer,nSize+3); LPCTSTR pInBuffer=lpszSrc; UINT iTest,iPack; for(int i=0;i<nSize/3 ;i++) { for(int j=0;j<4;j++) { iTest = BASE64_DECODE_TABLE[*pInBuffer++]; // Read from InputBuffer. //InPtr++; if (iTest == 0xFF) { j--; continue; //读到255非法字符 } iPack = iPack << 6 ; iPack = iPack | iTest ; } pOutBuffer[2] = iPack; iPack = iPack >> 8; pOutBuffer[1] = iPack; iPack = iPack >> 8; pOutBuffer[0] = iPack; //准备写入后3位 pOutBuffer+= 3; iPack = 0; } switch(nSize%3) { case 1: iTest = BASE64_DECODE_TABLE[*pInBuffer++]; // Read from InputBuffer. if (iTest != 0xFF) { iPack = iPack << 6 ; iPack = iPack | iTest ; } iTest = BASE64_DECODE_TABLE[*pInBuffer++]; // Read from InputBuffer. if (iTest != 0xFF) { iPack = iPack << 6 ; iPack = iPack | iTest ; } iPack = iPack >> 4; pOutBuffer[0] = iPack; pOutBuffer++; break; case 2: iTest = BASE64_DECODE_TABLE[*pInBuffer++]; // Read from InputBuffer. if (iTest != 0xFF) { iPack = iPack << 6 ; iPack = iPack | iTest ; } iTest = BASE64_DECODE_TABLE[*pInBuffer++]; // Read from InputBuffer. if (iTest != 0xFF) { iPack = iPack << 6 ; iPack = iPack | iTest ; } iTest = BASE64_DECODE_TABLE[*pInBuffer++];