SMTP协议发送邮件和附件

// testsmtp.cpp : Defines the entry point for the console application.//#include "stdafx.h"#include <stdlib.h>#include <stdio.h>#include <conio.h>#include <winsock.h>#include "base64.h"#pragma comment( lib,"ws2_32.lib" ) #define WSVERSMAKEWORD(2, 0)SOCKET connectTCP(const char *host, const char *service );void errexit(const char *format, ...);FILE* pf_log;void ReveiveMsg(SOCKET sock, char* checkstr = "/r/n"){char buffer[1024];fwrite("Server: ",1,strlen("Server: "),pf_log);while(1){int len = recv(sock,buffer,1024,0);if (len <= 0) break;fwrite(buffer,1,len,pf_log);buffer[len] = 0;printf("Server: %s",buffer);//检测边界if (strstr(buffer,checkstr)) break;}}void SendMsg(SOCKET sock,char* msg){fwrite("Client: ",1,strlen("Client: "),pf_log);int msgLen = strlen(msg);send(sock,msg,msgLen,0);printf("Client: %s",msg);fwrite(msg,1,msgLen,pf_log);}int main(int argc, char* argv[]){WSADATA wsadata;if (WSAStartup(WSVERS, &wsadata) != 0)errexit("WSAStartup failed/n");pf_log = fopen("log.txt","wb");//SOCKET sock = connectTCP("mail.hnu.cn","smtp");SOCKET sock = connectTCP("smtp.163.com","smtp");ReveiveMsg(sock); //服务器欢迎信息SendMsg(sock,"EHLO 163.com/r/n"); //SMTP协议的握手信号ReveiveMsg(sock,"250 8BITMIME/r/n"); SendMsg(sock,"AUTH LOGIN/r/n"); //开始认证登录ReveiveMsg(sock);//准备好用户名的base64编码int codelen;char username[]="ficefjb";char *base64code;base64code = base64_encode(username,strlen(username)); codelen = strlen(base64code);char username_base64[256];strcpy(username_base64,base64code);username_base64[codelen] = 0x0d;username_base64[codelen + 1] = 0x0a;username_base64[codelen + 2] = 0;SendMsg(sock,username_base64); //提交用户名ReveiveMsg(sock);//准备好密码的base64编码printf("Please input password:/n");char password[256];SetConsoleMode(GetStdHandle(STD_INPUT_HANDLE),ENABLE_LINE_INPUT | ENABLE_PROCESSED_INPUT);   scanf("%s",password);base64code = base64_encode(password,strlen(password)); codelen = strlen(base64code);char password_base64[256];strcpy(password_base64,base64code);password_base64[codelen] = 0x0d;password_base64[codelen + 1] = 0x0a;password_base64[codelen + 2] = 0;SendMsg(sock,password_base64); //提交密码ReveiveMsg(sock); //返回235表示成功SendMsg(sock,"MAIL FROM:<[e-mail]>/r/n"); //提交发送者ReveiveMsg(sock);SendMsg(sock,"RCPT TO:<[e-mail]>/r/n"); //提交接收者ReveiveMsg(sock);SendMsg(sock,"DATA/r/n"); //通知服务器下面是邮件ReveiveMsg(sock);//发送邮件头部信息SendMsg(sock,"TO: [e-mail]/r/nFROM: [e-mail]/r/nSUBJECT: SMTP协议测试/r/nDate:2009-12-5/r/nX-Mailer:fice's mailer/r/n"); //邮件SendMsg(sock,"MIMI-Version:1.0/r/n");SendMsg(sock,"Content-Type:multipart/mixed;boundary=/"#BOUNDARY#/"/r/n/r/n");//设置边界标识SendMsg(sock,"Content-Transfer-Encoding:7bit/r/n/r/n");SendMsg(sock,"This is a multi-part message in MIME format/r/n/r/n");//发送邮件内容头部信息SendMsg(sock,"--#BOUNDARY#/r/n");SendMsg(sock,"Content-Type: text/plain;charset=gb2312/r/n");SendMsg(sock,"Content-Transfer-Encoding:printable/r/n/r/n");//发送邮件的内容部分SendMsg(sock,"SMTP协议测试：发送附件/n----by fice 2009.12.5/r/n");//发送附件头部信息SendMsg(sock,"--#BOUNDARY#/r/n");SendMsg(sock,"Content-Type:text/plain;name=student.txt/r/n");SendMsg(sock,"Content-Transfer-Encoding:base64/r/n");SendMsg(sock,"Content-Disposition:attachment;filename=/"student.txt/"/r/n/r/n");//用二进制方式读取附件文件内容并转为base64格式FILE* pf = fopen("d://student.txt","rb");fseek(pf,0,SEEK_END);int filelen = ftell(pf);fseek(pf,0,SEEK_SET);char* filebuf = (char*) malloc(filelen);fread(filebuf,1,filelen,pf);char* filebase64 = base64_encode(filebuf,filelen);//发送邮件的附件部分SendMsg(sock,filebase64);SendMsg(sock,"/r/n./r/n");//邮件内容结束ReveiveMsg(sock);SendMsg(sock,"QUIT/r/n"); //通知服务器退出ReveiveMsg(sock); fclose(pf_log);closesocket(sock);WSACleanup();printf("Press any key to quit./n");getche();return 0;}