<?php
// +----------------------------------------------------------------------
// | ThinkPHP通用后台管理系统
// +----------------------------------------------------------------------
// | Copyright (c) 2013 www.4u4v.net All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: 水木清华 <admin@4u4v.net>
// +----------------------------------------------------------------------

/**
 * ThinkPHP 邮件处理类

 * 邮件处理类需要在项目配置或框架配置里增加如下配置参数:
	'SMTP_SERVER' =>'smtp.163.com',					//邮件服务器
	'SMTP_PORT' =>25,								//邮件服务器端口
	'SMTP_USER_EMAIL' =>'4u4v@163.com', 	//SMTP服务器的用户邮箱(一般发件人也得用这个邮箱)
	'SMTP_USER'=>'4u4v@163.com',			//SMTP服务器账户名
	'SMTP_PWD'=>'您的密码',							//SMTP服务器账户密码
	'SMTP_MAIL_TYPE'=>'HTML',						//发送邮件类型:HTML,TXT(注意都是大写)
	'SMTP_TIME_OUT'=>30,							//超时时间
	'SMTP_AUTH'=>true,								//邮箱验证(一般都要开启)
 
 * 将Email.class.php 复制到 框架目录 Extend/Library/ORG/Util下
 
 * 在控制器里用法:
   import('ORG.Util.Email');//导入本类
   $data['mailto'] 	= 	'admin@4u4v.net'; //收件人
   $data['subject'] =	'邮件标题';    //邮件标题
   $data['body'] 	=	'邮件正文内容。';    //邮件正文内容
   $mail = new Email();
   if($mail->send($data))
   {
		//邮件发送成功...
   }
   else
   {
		//邮件发送失败...
   }
 * 调试邮件处理类用法:
   $mail->debug(true)->send($data);   //开启调试功能

 * @category Think
 * @package  ORG
 * @author   水木清华 <admin@4u4v.net>
 * @version  $Id: Email.class.php  2013-8-15 10:32:37 $
 */

class Email
{
	var $smtp_port;
	var $time_out;
	var $host_name;
	var $log_file;
	var $relay_host;
	var $debug;
	var $auth;
	var $user;
	var $pass;
	var $sock;

	public function __construct()
	{
		$this->debug = false;
		$this->smtp_port = C('SMTP_PORT');
		$this->relay_host = C('SMTP_SERVER');
		$this->time_out = C('SMTP_TIME_OUT');
		$this->auth = C('SMTP_AUTH');
		$this->user = C('SMTP_USER');
		$this->pass = C('SMTP_PWD');
		$this->host_name = "localhost";
		$this->log_file ="";
		$this->sock = FALSE;
	}

	public function send($data, $from='', $subject = "", $body = "", $mailtype='html', $cc = "", $bcc = "", $additional_headers = "")
	{
		if(is_array($data))
		{
			$data['mailtype']  = empty($data['mailtype'])? C('SMTP_MAIL_TYPE'):$data['mailtype'];
			$data['mailfrom']  = empty($data['mailfrom'])? C('SMTP_USER_EMAIL'):$data['mailfrom'];
			$data['subject']  = empty($data['subject'])? 'no subject':$data['subject'];
			$data['body']  = empty($data['body']) ? 'no title':$data['body'];
			$from = $data['mailfrom'];
			$subject = $data['subject'];
			$body = $data['body'];
			$mailtype = $data['mailtype'];
			$to = $data['mailto'];
		}
		else
		{
			$to = $data;
		}
		$mail_from = $this->get_address($this->strip_comment($from));
		$body = ereg_replace("(^|(\r\n))(\\.)", "\\1.\\3", $body);
		$header .= "MIME-Version:1.0\r\n";
		if($mailtype=="HTML")
		{
			$header .= "Content-Type:text/html\r\n";
		}
		 $header .= "To: ".$to."\r\n";
		if ($cc != "")
		{
			$header .= "Cc: ".$cc."\r\n";
		}
		$header .= "From: $from<".$from.">\r\n";
		$header .= "Subject: ".$subject."\r\n";
		$header .= $additional_headers;
		$header .= "Date: ".date("r")."\r\n";
		$header .= "X-Mailer:By Redhat (PHP/".phpversion().")\r\n";
		list($msec, $sec) = explode(" ", microtime());
		$header .= "Message-ID: <".date("YmdHis", $sec).".".($msec*1000000).".".$mail_from.">\r\n";
		$TO = explode(",", $this->strip_comment($to));
		 
		if ($cc != "") {
			$TO = array_merge($TO, explode(",", $this->strip_comment($cc)));
		}
		if ($bcc != "") {
			$TO = array_merge($TO, explode(",", $this->strip_comment($bcc)));
		}

		 
		$sent = TRUE;
		foreach ($TO as $rcpt_to) {
		$rcpt_to = $this->get_address($rcpt_to);
		if (!$this->smtp_sockopen($rcpt_to)) 
		{
			$this->log_write("Error: Cannot send email to ".$rcpt_to."\n");
			$sent = FALSE;
			continue;
		}
		if ($this->smtp_send($this->host_name, $mail_from, $rcpt_to, $header, $body)) 
		{
			$this->log_write("E-mail has been sent to <".$rcpt_to.">\n");
		} 
		else 
		{
			$this->log_write("Error: Cannot send email to <".$rcpt_to.">\n");
			$sent = FALSE;
		}
		fclose($this->sock);
			$this->log_write("Disconnected from remote host\n");
		}
		if($this->debug)
		{
			echo "<br>";
			echo $header;
		}
		return $sent;
	}
	
	public function debug($debug)
	{
		$this->debug = $debug;
		return $this;
	}
	
	/* Private Functions */
	function smtp_send($helo, $from, $to, $header, $body = "")
	{
		if (!$this->smtp_putcmd("HELO", $helo)) 
		{
			return $this->smtp_error("sending HELO command");
		}
		#auth
		if($this->auth){
		if (!$this->smtp_putcmd("AUTH LOGIN", base64_encode($this->user))) 
		{
			return $this->smtp_error("sending HELO command");
		}
	 
		if (!$this->smtp_putcmd("", base64_encode($this->pass))) 
		{
			return $this->smtp_error("sending HELO command");
		}
		}
		if (!$this->smtp_putcmd("MAIL", "FROM:<".$from.">")) 
		{
			return $this->smtp_error("sending MAIL FROM command");
		}
	 
		if (!$this->smtp_putcmd("RCPT", "TO:<".$to.">")) 
		{
			return $this->smtp_error("sending RCPT TO command");
		}
	 
		if (!$this->smtp_putcmd("DATA")) 
		{
			return $this->smtp_error("sending DATA command");
		}
	 
		if (!$this->smtp_message($header, $body)) 
		{
			return $this->smtp_error("sending message");
		}
	 
		if (!$this->smtp_eom()) 
		{
			return $this->smtp_error("sending <CR><LF>.<CR><LF> [EOM]");
		}
	 
		if (!$this->smtp_putcmd("QUIT")) 
		{
			return $this->smtp_error("sending QUIT command");
		}
			return TRUE;
	}
 
	function smtp_sockopen($address)
	{
		if ($this->relay_host == "") {
		return $this->smtp_sockopen_mx($address);
		} else {
		return $this->smtp_sockopen_relay();
		}
	}

 
	function smtp_sockopen_relay()
	{
		$this->log_write("Trying to ".$this->relay_host.":".$this->smtp_port."\n");
		$this->sock = @fsockopen($this->relay_host, $this->smtp_port, $errno, $errstr, $this->time_out);
		if (!($this->sock && $this->smtp_ok())) {
		$this->log_write("Error: Cannot connenct to relay host ".$this->relay_host."\n");
		$this->log_write("Error: ".$errstr." (".$errno.")\n");
		return FALSE;
		}
		$this->log_write("Connected to relay host ".$this->relay_host."\n");
		return TRUE;;
	}

 
	function smtp_sockopen_mx($address)
	{
		$domain = ereg_replace("^.+@([^@]+)$", "\\1", $address);
/*      //PHP5.3之前的getmxrr()函数不能在Windows下使用
		if (!@getmxrr($domain, $MXHOSTS)) 
		{
			$this->log_write("Error: Cannot resolve MX \"".$domain."\"\n");
			return FALSE;
		}
*/
		foreach ($MXHOSTS as $host) 
		{
			$this->log_write("Trying to ".$host.":".$this->smtp_port."\n");
			$this->sock = @fsockopen($host, $this->smtp_port, $errno, $errstr, $this->time_out);
			if (!($this->sock && $this->smtp_ok())) 
			{
				$this->log_write("Warning: Cannot connect to mx host ".$host."\n");
				$this->log_write("Error: ".$errstr." (".$errno.")\n");
				continue;
			}
			$this->log_write("Connected to mx host ".$host."\n");
			return TRUE;
		}
		$this->log_write("Error: Cannot connect to any mx hosts (".implode(", ", $MXHOSTS).")\n");
		return FALSE;
	}
 
	function smtp_message($header, $body)
	{
		fputs($this->sock, $header."\r\n".$body);
		$this->smtp_debug("> ".str_replace("\r\n", "\n"."> ", $header."\n> ".$body."\n> "));
		return TRUE;
	}
 
	function smtp_eom()
	{
		fputs($this->sock, "\r\n.\r\n");
		$this->smtp_debug(". [EOM]\n"); 
		return $this->smtp_ok();
	}
 
	function smtp_ok()
	{
		$response = str_replace("\r\n", "", fgets($this->sock, 512));
		$this->smtp_debug($response."\n");
	 
	if (!ereg("^[23]", $response)) 
	{
		fputs($this->sock, "QUIT\r\n");
		fgets($this->sock, 512);
		$this->log_write("Error: Remote host returned \"".$response."\"\n");
		return FALSE;
	}
		return TRUE;
	}
 
	function smtp_putcmd($cmd, $arg = "")
	{
		if ($arg != "")
		{
			if($cmd=="") $cmd = $arg;
			else $cmd = $cmd." ".$arg;
		} 
		fputs($this->sock, $cmd."\r\n");
		$this->smtp_debug("> ".$cmd."\n");
		return $this->smtp_ok();
	}
 
	function smtp_error($string)
	{
		$this->log_write("Error: Error occurred while ".$string.".\n");
		return FALSE;
	}
 
	function log_write($message)
	{
		$this->smtp_debug($message);
	 
		if ($this->log_file == "") 
		{
			return TRUE;
		}
	 
		$message = date("M d H:i:s ").get_current_user()."[".getmypid()."]: ".$message;
		if (!@file_exists($this->log_file) || !($fp = @fopen($this->log_file, "a"))) 
		{
			$this->smtp_debug("Warning: Cannot open log file \"".$this->log_file."\"\n");
			return FALSE;
		}
		flock($fp, LOCK_EX);
		fputs($fp, $message);
		fclose($fp);
		return TRUE;
	}
 
	function strip_comment($address)
	{
		$comment = "\\([^()]*\\)";
		while (ereg($comment, $address)) 
		{
			$address = ereg_replace($comment, "", $address);
		}
		return $address;
	}
 
	function get_address($address)
	{
		$address = ereg_replace("([ \t\r\n])+", "", $address);
		$address = ereg_replace("^.*<(.+)>.*$", "\\1", $address); 
		return $address;
	}
 
	function smtp_debug($message)
	{
		if ($this->debug) 
		{
			echo $message."<br>";
		}
	}
 
	function get_attach_type($image_tag) 
	{ //
	 
		$filedata = array();
		 
		$img_file_con=fopen($image_tag,"r");
		unset($image_data);
		while ($tem_buffer=AddSlashes(fread($img_file_con,filesize($image_tag))))
		$image_data.=$tem_buffer;
		fclose($img_file_con);
		$filedata['context'] = $image_data;
		$filedata['filename']= basename($image_tag);
		$extension=substr($image_tag,strrpos($image_tag,"."),strlen($image_tag)-strrpos($image_tag,"."));
		switch($extension)
		{
			case ".gif":
			$filedata['type'] = "image/gif";
			break;
			case ".gz":
			$filedata['type'] = "application/x-gzip";
			break;
			case ".htm":
			$filedata['type'] = "text/html";
			break;
			case ".html":
			$filedata['type'] = "text/html";
			break;
			case ".jpg":
			$filedata['type'] = "image/jpeg";
			break;
			case ".tar":
			$filedata['type'] = "application/x-tar";
			break;
			case ".txt":
			$filedata['type'] = "text/plain";
			break;
			case ".zip":
			$filedata['type'] = "application/zip";
			break;
			default:
			$filedata['type'] = "application/octet-stream";
			break;
		}
		return $filedata;
	}
 }
?>