邮件发送程序，请大家研究下为什么实现不了功能，互相学习

Eternal

#include <stdio.h>
#include <winsock2.h>
#include <stdlib.h>
#include <string.h>
#pragma comment(lib,"ws2_32.lib")
void StreamClient(char *szServer, short nPort, char *szMessage);

int main()
{  
WORD wVersionRequested = MAKEWORD(2,0);
WSADATA wsaData;
int nRet;
short nPort;
nPort =25;

nRet = WSAStartup(wVersionRequested, &wsaData);
StreamClient("smtp.126.com", nPort, "AUTH LOGIN\r\n");


WSACleanup();
        return 0;
}



void StreamClient(char *szServer, short nPort, char *szMessage)
{
printf("\nStream Client connecting to server: %s on port:%d\n",szServer,nPort);
LPHOSTENT lpHostEntry;
lpHostEntry = gethostbyname(szServer);
    if (lpHostEntry == NULL)
    {
        printf("gethostbyname()/n");
        return;
    }
SOCKET        theSocket;   //创建套字节

theSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (theSocket == INVALID_SOCKET)
{
printf("socket()");
return;
}



SOCKADDR_IN saServer;

saServer.sin_family = AF_INET;
saServer.sin_addr = *((LPIN_ADDR)*lpHostEntry->h_addr_list);
saServer.sin_port = htons(nPort);       

//进行连接
int nRet;

nRet = connect( theSocket,(LPSOCKADDR)&saServer,sizeof(struct sockaddr));
printf("\n%d1lL=====================================%d\n",nRet,SOCKET_ERROR);
if (nRet == SOCKET_ERROR)
{
printf("连接失败\n");
closesocket(theSocket);
return;
}


char szBuf[256]={0};
        char buf[350]="0";
        char server[250];
        gethostname(server,250);
        strcpy(buf, "HELO ");
        strcat(buf, server);
        strcat(buf, " \r\n");
        printf("%s:::%d\n",buf,strlen(buf));


        nRet = recv(theSocket,szBuf,sizeof(szBuf)+1,0);  
                printf("接受服务器已连接: %s\n", szBuf);

        nRet = send(theSocket, buf, strlen(buf), 0);
        nRet = recv(theSocket, szBuf, sizeof(szBuf),0);
                printf("连接通过: %s\n",szBuf);

        //发送准备登陆信息
         nRet = send(theSocket,        "AUTH LOGIN \r\n", sizeof("AUTH LOGIN \r\n"), 0);
         nRet = recv(theSocket,        szBuf, sizeof(szBuf), 0);
                 printf("验证:%s\n",szBuf);

         //发送用户名注意户名必须用base64进行转码,发送转码以后的字符串
         nRet = send(theSocket,"cWJ5dTIwMDNAMTI2LmNvbQ==\r\n", strlen("cWJ5dTIwMDNAMTI2LmNvbQ==\r\n"),0);
         nRet = recv(theSocket, szBuf, sizeof(szBuf),0);
                 printf("输入账户:%s\n", szBuf);

         //发送用户密码必须用base64进行转码,发送转码以后的字符串
         nRet = send(theSocket,"NDIwODQxNjk4\r\n", strlen("NDIwODQxNjk4\r\n"),0);
         nRet = recv(theSocket,        szBuf, sizeof(szBuf),0);
                 printf("要求输入密码:%s",szBuf);

         //发送的信箱
        send(theSocket,"MAIL FROM:<qbyu2003@126.com>\r\n",sizeof("MAIL FROM:<qbyu2003@126.com>\r\n"),0);
         printf("\n发送的邮箱:%s\n","qbyu2003@126.com");

       //接收邮件的邮箱
        nRet= send(theSocket,"RCPT TO:<qbyu2007@163.com> \r\n",sizeof("RCPT TO:<qbyu2007@163.com> \r\n"),0);

        printf("\n收信邮箱:%s\n","qbyu2007@163.com");

        char MailData[1024] = "From:\"qbyu2003@126.com\"\r\n"
"Subject: IP Address\r\n.\r\n";


       //告示邮件服务器，准备发送邮件内容
       send(theSocket,"DATA\r\n", strlen("DATA\r\n"),0);
       nRet = recv(theSocket, szBuf, sizeof(szBuf)+1, 0);
           printf("\n发送状况:%s\n",szBuf);
          
       //发送邮件标题
       send(theSocket,MailData, strlen(MailData),0);

       //发送邮件内容
       send(theSocket,"邮件内容来了!\r\n", strlen("邮件内容来了!\r\n"),0);


       //发送邮件结束
       send(theSocket,"\r\n.\r\n", strlen("\r\n.\r\n"),0);


       //接收邮件服务器返回信息
       nRet = recv(theSocket,szBuf,sizeof(szBuf)+1,0);  
           printf("返回信息:%s\n",szBuf);






closesocket(theSocket);

}

littleevil

调试了下，发现前面都还正常，但是一旦执行MAIL TO:<XXX>命令后就出现了502错误，说是命令无法解析。有些无语了~
若只是学习，还望楼主多多百度，若确实需要，建议使用封装好的模块来写。

Eternal

是用来学习的，因为在网上找了很多，都插不多一样的所以才在这里请大家讨论，纠正，至于为什么不用c++来模块化，是为给c语言的朋友也学习一下！

沉醉东风

smtp.126.com

littleevil

沉醉东风 发表于 2012-4-23 13:24

                               
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smtp.126.com

                               
登录/注册后可看大图

VC还是不行，不知道怎么回事，用python试了下，是可以的。

from socket import *
from sys import exit

s=socket(AF_INET,SOCK_STREAM)
host=gethostbyname('smtp.163.com')
local=gethostname()

try:
    s.connect((host,25))
    print '[+] Connected!\n'
except:
    print '[!] Connecte failed!'
    exit(0)

print 'HELO '+local+':'
s.send('HELO '+local+'\r\n')
print s.recv(1024)

print 'AUTH LOGIN:'
s.send('AUTH LOGIN \r\n')
print s.recv(1024)

print 'UserName:'
s.send('base64(username)\r\n')
print s.recv(1024)

print 'PassWord:'
s.send('base64(pass)\r\n')
print s.recv(1024)
print s.recv(1024)

print 'MAIL FROM:'
s.send('MAIL FROM:<hack_littleevil@163.com>\r\n')
print s.recv(1024)

print 'RCPT TO:'
s.send('RCPT TO:<1227763328@qq.com>\r\n')
print s.recv(1024)

print 'Send DATA:'
s.send('data\r\n')
print s.recv(1024)

print 'Send Mail:'
s.send('From:"hack_littleevil@163.com"\r\n'\
       'Subject: test it!\r\n'\
       'Content-Type: text/plain\r\n'\
       'Hello little evil!\r\n'\
       '\r\n.\r\n')
print s.recv(1024)


print 'Send end flag:'
s.send('\r\n.\r\n')
print s.recv(1024)

s.close()

Eternal

我也纳闷为什么vc不行

□ル豪﹏?

xuexi i xia         

fishc1008

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