smtp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 WSVERS MAKEWORD(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:<ficefjb@163.com>/r/n"); //提交发送者

ReveiveMsg(sock);

SendMsg(sock,"RCPT TO:<ficefjb@163.com>/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: ficefjb@163.com/r/nFROM: ficefjb@163.com/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;

}