smtp.rar_smtp_发邮件

#include<windows.h> #include<stdio.h> #include<WinSock.h> #include<iostream> using namespace std; #pragma comment(lib,"ws2_32.lib") struct Base64Date6 { unsigned int d4:6; unsigned int d3:6; unsigned int d2:6; unsigned int d1:6; }; // 协议中加密部分使用的是base64方法 char ConvertToBase64(char c6); void EncodeBase64(char*dbuf,char*buf128,int len); void SendMail(char*email,char*body); int OpenSocket(struct sockaddr *addr); int main() { char EmailTo[]="1243021611@qq.com"; //发给的邮箱 char EmailContents[]="From: \"lucy\"<""To: \"dasiy\"<""Subject: Hello\r\n\r\n""Hello World, Hello Email!"; SendMail(EmailTo,EmailContents); // sendmail(EmailTo,EmailContents); return 0; } char ConvertToBase64(char uc) { if(uc <26) { return'A'+uc; } if(uc <52) { return'a'+(uc -26); } if(uc <62) { return'0'+(uc -52); } if(uc ==62) { return'+'; } return'/'; } // base64的实现 void EncodeBase64(char*dbuf,char*buf128,int len) { struct Base64Date6*ddd =NULL; int i =0; char buf[256]={0}; char *tmp =NULL; char cc ='\0'; memset(buf,0,256); strcpy(buf,buf128); for(i =1;i <=len/3;i++) { tmp =buf +(i-1)*3; cc =tmp[2]; tmp[2]=tmp[0]; tmp[0]=cc; ddd =(struct Base64Date6*)tmp; dbuf[(i-1)*4+0]=ConvertToBase64((unsigned int)ddd->d1); dbuf[(i-1)*4+1]=ConvertToBase64((unsigned int)ddd->d2); dbuf[(i-1)*4+2]=ConvertToBase64((unsigned int)ddd->d3); dbuf[(i-1)*4+3]=ConvertToBase64((unsigned int)ddd->d4); } if(len %3==1) { tmp =buf +(i-1)*3; cc =tmp[2]; tmp[2]=tmp[0]; tmp[0]=cc; ddd =(struct Base64Date6*)tmp; dbuf[(i-1)*4+0]=ConvertToBase64((unsigned int)ddd->d1); dbuf[(i-1)*4+1]=ConvertToBase64((unsigned int)ddd->d2); dbuf[(i-1)*4+2]='='; dbuf[(i-1)*4+3]='='; } if(len%3==2) { tmp =buf+(i-1)*3; cc =tmp[2]; tmp[2]=tmp[0]; tmp[0]=cc; ddd =(struct Base64Date6*)tmp; dbuf[(i-1)*4+0]=ConvertToBase64((unsigned int)ddd->d1); dbuf[(i-1)*4+1]=ConvertToBase64((unsigned int)ddd->d2); dbuf[(i-1)*4+2]=ConvertToBase64((unsigned int)ddd->d3); dbuf[(i-1)*4+3]='='; } return; } // 发送邮件 void SendMail(char*email,char*body) { int sockfd ={0}; char buf[1500]={0}; char rbuf[1500]={0}; char login[128]={0}; char pass[128]={0}; WSADATA WSAData; struct sockaddr_in their_addr ={0}; WSAStartup(MAKEWORD(2,2),&WSAData); memset(&their_addr,0,sizeof(their_addr)); their_addr.sin_family =AF_INET; their_addr.sin_port =htons(25); hostent*hptr =gethostbyname("smtp.163.com"); // 用的是163服务器 memcpy(&their_addr.sin_addr.S_un.S_addr,hptr->h_addr_list[0],hptr->h_length); printf("IP of smpt.126.com is : %d:%d:%d:%d\n", their_addr.sin_addr.S_un.S_un_b.s_b1, their_addr.sin_addr.S_un.S_un_b.s_b2, their_addr.sin_addr.S_un.S_un_b.s_b3, their_addr.sin_addr.S_un.S_un_b.s_b4); // 连接邮件服务器，如果连接后没有响应，则2 秒后重新连接 sockfd =OpenSocket((struct sockaddr *)&their_addr); memset(rbuf,0,1500); while(recv(sockfd,rbuf,1500,0)==0) { cout<<"reconnect..."<<endl; Sleep(2); sockfd =OpenSocket((struct sockaddr *)&their_addr); memset(rbuf,0,1500); } cout<<rbuf<<endl; // EHLO memset(buf,0,1500); sprintf(buf, "EHLO HYL-PC\r\n"); send(sockfd,buf,strlen(buf),0); memset(rbuf,0,1500); recv(sockfd,rbuf,1500,0); cout<<"EHLO REceive: "<<rbuf<<endl; // AUTH LOGIN memset(buf,0,1500); sprintf(buf,"AUTH LOGIN\r\n"); send(sockfd,buf,strlen(buf),0); memset(rbuf,0,1500); recv(sockfd,rbuf,1500,0); cout<<"Auth Login Receive: "<<rbuf<<endl; // USER memset(buf,0,1500); sprintf(buf,"13763370379@163.com"); memset(login,0,128); EncodeBase64(login,buf,strlen(buf)); sprintf(buf,"%s\r\n",login); send(sockfd,buf,strlen(buf),0); cout<<"Base64 UserName: "<<buf<<endl; memset(rbuf,0,1500); recv(sockfd,rbuf,1500,0); cout<<"User Login Receive: "<<rbuf<<endl; // PASSWORD sprintf(buf,"fei6611380");//你的邮箱密码 memset(pass,0,128); EncodeBase64(pass,buf,strlen(buf)); sprintf(buf,"%s\r\n",pass); send(sockfd,buf,strlen(buf),0); cout<<"Base64 Password: "<<buf<<endl; memset(rbuf,0,1500); recv(sockfd,rbuf,1500,0); cout<<"Send Password Receive: "<<rbuf<<endl; // MAIL FROM memset(buf,0,1500); sprintf(buf,"MAIL FROM: <13763370379@163.com>"); send(sockfd,buf,strlen(buf),0); memset(rbuf,0,1500); recv(sockfd,rbuf,1500,0); cout<<"set Mail From Receive: "<<rbuf<<endl; // RCPT TO 第一个收件人 sprintf(buf,"RCPT TO: <1243021611@qq.com>"); send(sockfd,buf,strlen(buf),0); memset(rbuf,0,1500); recv(sockfd,rbuf,1500,0); cout<<"Tell Sendto Receive: "<<rbuf<<endl; // DATA 准备开始发送邮件内容 sprintf(buf,"DATA\r\n"); send(sockfd,buf,strlen(buf),0); memset(rbuf,0,1500); recv(sockfd,rbuf,1500,0); cout<<"Send Mail Prepare Receive: "<<rbuf<<endl; // 发送邮件内容，\r\n.\r\n内容结束标记 sprintf(buf,"%s\r\n.\r\n",body); send(sockfd,buf,strlen(buf),0); memset(rbuf,0,1500); recv(sockfd,rbuf,1500,0); cout<<"Send Mail Receive: "<<rbuf<<endl; // QUIT sprintf(buf,"QUIT\r\n"); send(sockfd,buf,strlen(buf),0); memset(rbuf,0,1500); recv(sockfd,rbuf,1500,0); cout<<"Quit Receive: "<<rbuf<<endl; //清理工作 closesocket(sockfd); WSACleanup(); return; } // 打开TCP Socket连接 int OpenSocket(struct sockaddr *addr) { int sockfd =0; sockfd=socket(PF_INET,SOCK_STREAM,0); if(sockfd <0) { cout<<"Open sockfd(TCP) error!"<<endl; exit(-1); } if(connect(sockfd,addr,sizeof(struct sockaddr))<0) { cout<<"Connect sockfd(TCP) error!"<<endl; exit(-1); } return sockfd; }