class.smtp.php

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	}

	public function ClearBCCs( )
	{
		$this->bcc = array( );
	}

	public function ClearReplyTos( )
	{
		$this->ReplyTo = array( );
	}

	public function ClearAllRecipients( )
	{
		$this->to = array( );
		$this->cc = array( );
		$this->bcc = array( );
	}

	public function ClearAttachments( )
	{
		$this->attachment = array( );
	}

	public function ClearCustomHeaders( )
	{
		$this->CustomHeader = array( );
	}

	public function error_handler( $msg )
	{
		$this->ErrorAlerts[] = $msg;
		if ( $this->MailerDebug )
		{
			echo "<h3>Mailer Error</h3>Description:<br>";
			printf( "<font color=\"FF0000\">%s</font>", $msg );
		}
	}

	public function AddCustomHeader( $custom_header )
	{
		$this->CustomHeader[] = $custom_header;
	}

	public function UseMSMailHeaders( )
	{
		$MSHeader = "";
		if ( $this->Priority == 1 )
		{
			$MSPriority = "High";
		}
		else if ( $this->Priority == 5 )
		{
			$MSPriority = "Low";
		}
		else
		{
			$MSPriority = "Medium";
		}
		$MSHeader .= sprintf( "X-MSMail-Priority: %s\r\n", $MSPriority );
		$MSHeader .= sprintf( "Importance: %s\r\n", $MSPriority );
		return $MSHeader;
	}

}

class SMTP
{

	public $SMTP_PORT = 25;
	public $CRLF = "\r\n";
	public $smtp_conn = NULL;
	public $error = NULL;
	public $helo_rply = NULL;
	public $do_debug = NULL;

	public function SMTP( )
	{
		$this->smtp_conn = 0;
		$this->error = NULL;
		$this->helo_rply = NULL;
		$this->do_debug = 0;
	}

	public function Connected( )
	{
		if ( !empty( $this->smtp_conn ) )
		{
			$sock_status = socket_get_status( $this->smtp_conn );
			if ( $sock_status['eof'] )
			{
				$this->Close( );
				return FALSE;
			}
			return TRUE;
		}
		return FALSE;
	}

	public function Connect( $host, $port = 0, $tval = 30 )
	{
		$this->error = NULL;
		if ( $this->connected( ) )
		{
			$this->error = array( "error" => "Already connected to a server" );
			return FALSE;
		}
		if ( empty( $port ) )
		{
			$port = $this->SMTP_PORT;
		}
		$this->smtp_conn = fsockopen( $host, $port, &$errno, &$errstr, $tval );
		if ( empty( $this->smtp_conn ) )
		{
			$this->error = array(
				"error" => "Failed to connect to server",
				"errno" => $errno,
				"errstr" => $errstr
			);
			return FALSE;
		}
		$announce = $this->get_lines( );
		return TRUE;
	}

	public function Close( )
	{
		$this->error = NULL;
		$this->helo_rply = NULL;
		if ( !empty( $this->smtp_conn ) )
		{
			fclose( $this->smtp_conn );
			$this->smtp_conn = 0;
		}
	}

	public function Data( $msg_data )
	{
		$this->error = NULL;
		if ( !$this->connected( ) )
		{
			$this->error = array( "error" => "Called Data() without being connected" );
			return FALSE;
		}
		$this->send_line( "DATA" );
		$rply = $this->get_lines( );
		$code = substr( $rply, 0, 3 );
		if ( $code != 354 )
		{
			$this->error = array(
				"error" => "DATA command not accepted from server",
				"smtp_code" => $code,
				"smtp_msg" => substr( $rply, 4 )
			);
			return FALSE;
		}
		$msg_data = str_replace( "\r\n", "\n", $msg_data );
		$msg_data = str_replace( "\r", "\n", $msg_data );
		$lines = explode( "\n", $msg_data );
		$field = substr( $lines[0], 0, strpos( $lines[0], ":" ) );
		$in_headers = FALSE;
		if ( !empty( $field ) || !strstr( $field, " " ) )
		{
			$in_headers = TRUE;
		}
		$max_line_length = 998;
		while ( list( , $line ) = each( &$lines ) )
		{
			$lines_out = NULL;
			if ( $line == "" && $in_headers )
			{
				$in_headers = FALSE;
			}
			while ( $max_line_length < strlen( $line ) )
			{
				$pos = strrpos( substr( $line, 0, $max_line_length ), " " );
				$lines_out[] = substr( $line, 0, $pos );
				$line = substr( $line, $pos + 1 );
				if ( $in_headers )
				{
					$line = "\t".$line;
				}
			}
			$lines_out[] = $line;
			while ( list( , $line_out ) = each( &$lines_out ) )
			{
				if ( $line_out[0] == "." )
				{
					$line_out = ".".$line_out;
				}
				$tmpdata .= $line_out.$this->CRLF;
			}
		}
		$this->send_line( $tmpdata.$this->CRLF."." );
		$rply = $this->get_lines( );
		$code = substr( $rply, 0, 3 );
		if ( $code != 250 )
		{
			$this->error = array(
				"error" => "DATA not accepted from server",
				"smtp_code" => $code,
				"smtp_msg" => substr( $rply, 4 )
			);
			return FALSE;
		}
		return TRUE;
	}

	public function Hello( $host = "" )
	{
		$this->error = NULL;
		if ( !$this->connected( ) )
		{
			$this->error = array( "error" => "Called Hello() without being connected" );
			return FALSE;
		}
		if ( empty( $host ) )
		{
			$host = "localhost";
		}
		$this->send_line( "HELO ".$host );
		$rply = $this->get_lines( );
		$code = substr( $rply, 0, 3 );
		if ( $code != 250 )
		{
			$this->error = array(
				"error" => "HELO not accepted from server",
				"smtp_code" => $code,
				"smtp_msg" => substr( $rply, 4 )
			);
			return FALSE;
		}
		$this->helo_rply = $rply;
		return TRUE;
	}

	public function AuthHello( $host = "", $user = "", $pass = "" )
	{
		$this->error = NULL;
		if ( !$this->connected( ) )
		{
			$this->error = array( "error" => "Called Hello() without being connected" );
			return FALSE;
		}
		if ( empty( $host ) )
		{
			$host = "localhost";
		}
		$this->send_line( "EHLO ".$host );
		$rply = $this->get_lines( );
		$code = substr( $rply, 0, 3 );
		if ( $code != 250 )
		{
			$this->error = array(
				"error" => "EHLO not accepted from server",
				"smtp_code" => $code,
				"smtp_msg" => substr( $rply, 4 )
			);
			return FALSE;
		}
		$this->helo_rply = $rply;
		$this->send_line( "AUTH LOGIN" );
		$rply = $this->get_lines( );
		$code = substr( $rply, 0, 3 );
		if ( $code != 334 )
		{
			$this->error = array(
				"error" => "AUTH LOGIN not accepted from server",
				"smtp_code" => $code,
				"smtp_msg" => substr( $rply, 4 )
			);
			return FALSE;
		}
		$this->send_line( base64_encode( $user ) );
		$rply = $this->get_lines( );
		$code = substr( $rply, 0, 3 );
		if ( $code != 334 )
		{
			$this->error = array(
				"error" => "USER not accepted from server",
				"smtp_code" => $code,
				"smtp_msg" => substr( $rply, 4 )
			);
			return FALSE;
		}
		$this->send_line( base64_encode( $pass ) );
		$rply = $this->get_lines( );
		$code = substr( $rply, 0, 3 );
		if ( $code != 235 )
		{
			$this->error = array(
				"error" => "PASSWORD not accepted from server",
				"smtp_code" => $code,
				"smtp_msg" => substr( $rply, 4 )
			);
			return FALSE;
		}
		return TRUE;
	}

	public function MailFrom( $from )
	{
		$this->error = NULL;
		if ( !$this->connected( ) )
		{
			$this->error = array( "error" => "Called Mail() without being connected" );
			return FALSE;
		}
		$this->send_line( "MAIL FROM:".$from );
		$rply = $this->get_lines( );
		$code = substr( $rply, 0, 3 );
		if ( $code != 250 )
		{
			$this->error = array(
				"error" => "MAIL not accepted from server",
				"smtp_code" => $code,
				"smtp_msg" => substr( $rply, 4 )
			);
			return FALSE;
		}
		return TRUE;
	}

	public function Quit( $close_on_error = TRUE )
	{
		$this->error = NULL;
		if ( !$this->connected( ) )
		{
			$this->error = array( "error" => "Called Quit() without being connected" );
			return FALSE;
		}
		$this->send_line( "QUIT" );
		$byemsg = $this->get_lines( );
		$rval = TRUE;
		$e = NULL;
		$code = substr( $byemsg, 0, 3 );
		if ( $code != 221 )
		{
			$e = array(
				"error" => "SMTP server rejected quit command",
				"smtp_code" => $code,
				"smtp_rply" => substr( $byemsg, 4 )
			);
			$rval = FALSE;
		}
		if ( empty( $e ) || $close_on_error )
		{
			$this->Close( );
		}
		return $rval;
	}

	public function Recipient( $to )
	{
		$this->error = NULL;
		if ( !$this->connected( ) )
		{
			$this->error = array( "error" => "Called Recipient() without being connected" );
			return FALSE;
		}
		$this->send_line( "RCPT TO:".$to );
		$rply = $this->get_lines( );
		$code = substr( $rply, 0, 3 );
		if ( $code != 250 && $code != 251 )
		{
			$this->error = array(
				"error" => "RCPT not accepted from server",
				"smtp_code" => $code,
				"smtp_msg" => substr( $rply, 4 )
			);
			return FALSE;
		}
		return TRUE;
	}

	public function get_lines( )
	{
		$data = "";
		while ( $str = fgets( $this->smtp_conn, 515 ) )
		{
			$data .= $str;
			if ( !( substr( $str, 3, 1 ) == " " ) )
			{
				continue;
			}
			break;
		}
		if ( $this->do_debug )
		{
			$tmp = ereg_replace( "(\r|\n)", "", $data );
			echo "<font style=\"font-size:12px; font-family: Courier New; background-color: white; color: black;\"><- <b>".htmlspecialchars( $tmp )."</span><br>\r\n";
			flush( );
		}
		return $data;
	}

	public function send_line( $data )
	{
		fputs( $this->smtp_conn, $data.$this->CRLF );
		if ( $this->do_debug )
		{
			$data = htmlspecialchars( $data );
			echo "<font style=\"font-size:12px; font-family: Courier New; background-color: white; color: black;\">-> ".nl2br( $data )."</font><br>\r\n";
			flush( );
		}
	}

}

?>