<?php
/***********************************************
 *		SpeedPHP电子邮件扩展类
 * 文件: /Extensions/spEmail.php
 * 说明: 电子邮件扩展类
 * 作者: Myxf
 * 更新: 2015年5月14日
 ***********************************************/

/**
 * 电子邮件扩展类
 */
class spEmail {
	/* Public Variables */
	var $smtp_port;
	var $time_out = 30;
	var $host_name = 'localhost';
	var $log_file = '';
	var $relay_host;
	var $debug = TRUE;
	var $auth;
	var $from;
	var $user;
	var $pass;

	/* Private Variables */
	var $sock;

	/* Constractor */
	function  __construct($relay_host = "", $smtp_port = 25, $auth = false, $from = '', $user = '', $pass = '') {
		$params = spExt("spEmail");
		$this->relay_host = empty($relay_host) ? $params['smtp_host'] : $relay_host;
		$this->smtp_port = empty($smtp_port) ? $params['smtp_port'] : $smtp_port;
		$this->auth = empty($auth) ? $params['auth'] : $auth;
		$this->user = empty($user) ? $params['user'] : $user;
		$this->pass = empty($pass) ? $params['pass'] : $pass;
		$this->from = empty($from) ? $params['from'] : $from;

		if( !empty($params['debug']) )$this->debug = $params['debug'];
		if( !empty($params["time_out"]) )$this->time_out = $params["time_out"];
		if( !empty($params["log_file"]) )$this->log_file = $params["log_file"];
		if( !empty($params["host_name"]) )$this->host_name = $params["host_name"];
		
		$this->sock = FALSE;
	}

	/* Main Function */
	function sendmail($to, $subject = "", $body = "", $mailtype = '', $cc = "", $bcc = "", $additional_headers = "") {
		$from = $this->from;
		$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");
		}
		echo "<br>";
		echo $header;
		return $sent;
	}

	/* 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", $address);
		if (!@getmxrr($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;
	}

}

/* End of this file */