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我想用 PHP 编写一个脚本，通过代理连接到 smtp 服务器上的 TELNET。到目前为止，我所拥有的是这两种变体：

1 FSOCKOPEN（我无法代理此连接）

$connection = fsockopen("smtp.comcast.net",25,$errno,$errstr,10);
if(!$connection)
{
    echo "Connection error";
}
else
{
    $command  = "HELO smtp.comcast.net\r\n";
    fwrite($connection,$command);
    while (!feof($connection)) 
    {
        echo fgets($connection, 128)."\n";
    }

    $command  = "AUTH LOGIN\r\n";
    fwrite($connection,$command);
    while (!feof($connection)) 
    {
        echo fgets($connection, 128)."\n";
    }


    $command  = base64_encode("username")."\r\n";
    fwrite($connection,$command);
    while (!feof($connection)) 
    {
        echo fgets($connection, 128)."\n";
    }


    $command  = base64_encode("password")."\r\n";
    fwrite($connection,$command);
    while (!feof($connection)) 
    {
        echo fgets($connection, 128)."\n";
    }

    $command = "QUIT\r\n";
    fwrite($connection,$command);
    while (!feof($connection)) 
    {
        echo fgets($connection, 128)."\n";
    }
}

但它正在输出我：

220 omta01.emeryville.ca.mail.comcast.net comcast ESMTP server ready
250 omta01.emeryville.ca.mail.comcast.net hello [xx.xx.xx.xx], pleased to meet you
334 VXNlcm5hbWU6

女巫一切都好

和另一个变种

2 卷曲类

class ProxySmtp
{
    private $server;
    private $port;
    private $proxy;
    private $timeout;
    private $curl_connection;

    public function __construct($server,$port,$timeout = 10,$proxy = NULL)
    {
        echo "SERVER: $server:$port \n";
        echo "PROXY: $proxy \n";
        echo "TIMEOUT: $timeout \n";

        // Set the config
        $this->server = $server;
        $this->port = $port;
        $this->timeout = $timeout;
        $this->proxy = $proxy;

        // Start the curl
        $this->curl_connection = curl_init($this->server.":".$this->port); 
        var_dump($this->curl_connection);
    }

    // Setters
    public function setServer($newserver)
    {
        $this->server = $newserver;
    }

    public function setPort($newport)
    {
        $this->port = $newport;
    }

    public function setProxy($newproxy)
    {
        $this->proxy = $newproxy;
    }

    public function setTimeout($newtimeout)
    {
        $this->timeout = $newtimeout;
    }

    // Getters
    public function getServer()
    {
        echo $this->server;
        return $this->server;
    }

    public function curl_telnet($query) 
    {
        if (!function_exists('curl_init')) 
        { 
            user_error('"curl_init()" function does not exist.', E_USER_WARNING);
            return false; 
        }
        curl_setopt($this->curl_connection, CURLOPT_TIMEOUT,$this->timeout);
        curl_setopt($this->curl_connection, CURLOPT_CONNECTTIMEOUT,$this->timeout);
        curl_setopt($this->curl_connection, CURLOPT_RETURNTRANSFER, TRUE);
        curl_setopt($this->curl_connection, CURLOPT_CUSTOMREQUEST,$query);
        if($this->proxy != NULL)
        {
            echo "USING PROXY : ".$this->proxy."\n";
            curl_setopt($this->curl_connection,CURLOPT_PROXY,$this->proxy);
            curl_setopt($this->curl_connection,CURLOPT_PROXYTYPE,CURLPROXY_SOCKS5);
        }
        $output=curl_exec($this->curl_connection); 
        //curl_close($this->curl_connection);
        if($output == false)
        {
            echo "CONNECTION ERROR!\n";
        }
        return $output; 
    }

    public function __destruct()
    {
        $Destroy = curl_close($this->curl_connection);
        echo "Object destroyed (".$Destroy.")! \n";
    }
}

// Server,port,timeout,proxy(optional)
$ProxyAndPort = $Proxy.":".$ProxyPort;
$Smtp = new ProxySmtp($Server,$Port,$Timeout,$ProxyAndPort);
var_dump($Smtp->getServer());

var_dump($Smtp->curl_telnet("EHLO $User \r\n"));
var_dump($Smtp->curl_telnet("AUTH LOGIN \r\n"));
var_dump($Smtp->curl_telnet(base64_encode($user)." \r\n"));
var_dump($Smtp->curl_telnet(base64_encode($pass)." \r\n"));
var_dump($Smtp->curl_telnet("QUIT \r\n"));

女巫给了我

string(389) "220 omta12.westchester.pa.mail.comcast.net comcast ESMTP server ready
250-omta12.westchester.pa.mail.comcast.net hello [85.204.11.249], pleased to meet you
250-HELP
250-AUTH LOGIN PLAIN
250-SIZE 36700160
250-ENHANCEDSTATUSCODES
250-8BITMIME
250-STARTTLS
250 OK
500 5.5.1 command unrecognized
500 5.5.1 command unrecognized
450 4.7.0 too many invalid commands (closing session)

....

....

我有 6 个问题非常困扰我：

1 为什么它给了我一个简单的500 5.5.1命令？这是不可能的！450 4.7.0EHLO

2 为什么第一个示例适用于fsockopen，但我认为带有“curl”女巫的那个更强大并且具有代理功能以及对象和类？

3 为什么这个 ProxySmtp 类可以在任何其他服务器上正常工作？

4 为什么我可以在 cmd.exe（RAW 样式）中复制上面的所有命令并且我可以发送电子邮件？

5 用“\r\n”对telnet说“执行线路”对吗？

6 是否可以“代理”第一个脚本？（使 fsockopen 到通过代理）

提示 据我所知，您不能在这样的一行中向 COMCAST 发送命令：

$command  = "HELO smtp.comcast.net\r\n";
$command  .= "AUTH LOGIN\r\n";
$command  .= base64_encode("username")."\r\n";
$command  .= base64_encode("password")."\r\n";
$command .= "QUIT\r\n";

fwrite($connection,$command);
while (!feof($connection)) 
{
    echo fgets($connection, 128)."\n";
}

你必须这样做（LINE，SENT，LINE，SENT ...）：

$command  = "HELO smtp.comcast.net\r\n";
    fwrite($connection,$command);
    while (!feof($connection)) 
    {
        echo fgets($connection, 128)."\n";
    }

    $command  = "AUTH LOGIN\r\n";
    fwrite($connection,$command);
    while (!feof($connection)) 
    {
        echo fgets($connection, 128)."\n";
    }


    $command  = base64_encode("username")."\r\n";
    fwrite($connection,$command);
    while (!feof($connection)) 
    {
        echo fgets($connection, 128)."\n";
    }


    $command  = base64_encode("password")."\r\n";
    fwrite($connection,$command);
    while (!feof($connection)) 
    {
        echo fgets($connection, 128)."\n";
    }

    $command = "QUIT\r\n";
    fwrite($connection,$command);
    while (!feof($connection)) 
    {
        echo fgets($connection, 128)."\n";
    }

并且似乎 CURL 不想这样做。

我真的无法理解这是怎么回事，并且需要使用 PHP 类，因为我应该使用类来构建我的 WebMail 服务器管理员，这是第一部分，我还必须进入 IMAP 和 POP3 协议也是。

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0 回答 0