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Diffstat (limited to 'mayor-orig/www/include/share/net/class.smtp.php')
| -rw-r--r-- | mayor-orig/www/include/share/net/class.smtp.php | 1152 |
1 files changed, 1152 insertions, 0 deletions
diff --git a/mayor-orig/www/include/share/net/class.smtp.php b/mayor-orig/www/include/share/net/class.smtp.php new file mode 100644 index 00000000..81a85d08 --- /dev/null +++ b/mayor-orig/www/include/share/net/class.smtp.php @@ -0,0 +1,1152 @@ +<?php +/** + * PHPMailer RFC821 SMTP email transport class. + * PHP Version 5 + * @package PHPMailer + * @link https://github.com/PHPMailer/PHPMailer/ The PHPMailer GitHub project + * @author Marcus Bointon (Synchro/coolbru) <phpmailer@synchromedia.co.uk> + * @author Jim Jagielski (jimjag) <jimjag@gmail.com> + * @author Andy Prevost (codeworxtech) <codeworxtech@users.sourceforge.net> + * @author Brent R. Matzelle (original founder) + * @copyright 2014 Marcus Bointon + * @copyright 2010 - 2012 Jim Jagielski + * @copyright 2004 - 2009 Andy Prevost + * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License + * @note This program is distributed in the hope that it will be useful - WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. + */ + +/** + * PHPMailer RFC821 SMTP email transport class. + * Implements RFC 821 SMTP commands and provides some utility methods for sending mail to an SMTP server. + * @package PHPMailer + * @author Chris Ryan + * @author Marcus Bointon <phpmailer@synchromedia.co.uk> + */ +class SMTP +{ + /** + * The PHPMailer SMTP version number. + * @type string + */ + const VERSION = '5.2.9'; + + /** + * SMTP line break constant. + * @type string + */ + const CRLF = "\r\n"; + + /** + * The SMTP port to use if one is not specified. + * @type integer + */ + const DEFAULT_SMTP_PORT = 25; + + /** + * The maximum line length allowed by RFC 2822 section 2.1.1 + * @type integer + */ + const MAX_LINE_LENGTH = 998; + + /** + * Debug level for no output + */ + const DEBUG_OFF = 0; + + /** + * Debug level to show client -> server messages + */ + const DEBUG_CLIENT = 1; + + /** + * Debug level to show client -> server and server -> client messages + */ + const DEBUG_SERVER = 2; + + /** + * Debug level to show connection status, client -> server and server -> client messages + */ + const DEBUG_CONNECTION = 3; + + /** + * Debug level to show all messages + */ + const DEBUG_LOWLEVEL = 4; + + /** + * The PHPMailer SMTP Version number. + * @type string + * @deprecated Use the `VERSION` constant instead + * @see SMTP::VERSION + */ + public $Version = '5.2.9'; + + /** + * SMTP server port number. + * @type integer + * @deprecated This is only ever used as a default value, so use the `DEFAULT_SMTP_PORT` constant instead + * @see SMTP::DEFAULT_SMTP_PORT + */ + public $SMTP_PORT = 25; + + /** + * SMTP reply line ending. + * @type string + * @deprecated Use the `CRLF` constant instead + * @see SMTP::CRLF + */ + public $CRLF = "\r\n"; + + /** + * Debug output level. + * Options: + * * self::DEBUG_OFF (`0`) No debug output, default + * * self::DEBUG_CLIENT (`1`) Client commands + * * self::DEBUG_SERVER (`2`) Client commands and server responses + * * self::DEBUG_CONNECTION (`3`) As DEBUG_SERVER plus connection status + * * self::DEBUG_LOWLEVEL (`4`) Low-level data output, all messages + * @type integer + */ + public $do_debug = self::DEBUG_OFF; + + /** + * How to handle debug output. + * Options: + * * `echo` Output plain-text as-is, appropriate for CLI + * * `html` Output escaped, line breaks converted to `<br>`, appropriate for browser output + * * `error_log` Output to error log as configured in php.ini + * + * Alternatively, you can provide a callable expecting two params: a message string and the debug level: + * <code> + * $smtp->Debugoutput = function($str, $level) {echo "debug level $level; message: $str";}; + * </code> + * @type string|callable + */ + public $Debugoutput = 'echo'; + + /** + * Whether to use VERP. + * @link http://en.wikipedia.org/wiki/Variable_envelope_return_path + * @link http://www.postfix.org/VERP_README.html Info on VERP + * @type boolean + */ + public $do_verp = false; + + /** + * The timeout value for connection, in seconds. + * Default of 5 minutes (300sec) is from RFC2821 section 4.5.3.2 + * This needs to be quite high to function correctly with hosts using greetdelay as an anti-spam measure. + * @link http://tools.ietf.org/html/rfc2821#section-4.5.3.2 + * @type integer + */ + public $Timeout = 300; + + /** + * How long to wait for commands to complete, in seconds. + * Default of 5 minutes (300sec) is from RFC2821 section 4.5.3.2 + * @type integer + */ + public $Timelimit = 300; + + /** + * The socket for the server connection. + * @type resource + */ + protected $smtp_conn; + + /** + * Error information, if any, for the last SMTP command. + * @type array + */ + protected $error = array( + 'error' => '', + 'detail' => '', + 'smtp_code' => '', + 'smtp_code_ex' => '' + ); + + /** + * The reply the server sent to us for HELO. + * If null, no HELO string has yet been received. + * @type string|null + */ + protected $helo_rply = null; + + /** + * The set of SMTP extensions sent in reply to EHLO command. + * Indexes of the array are extension names. + * Value at index 'HELO' or 'EHLO' (according to command that was sent) + * represents the server name. In case of HELO it is the only element of the array. + * Other values can be boolean TRUE or an array containing extension options. + * If null, no HELO/EHLO string has yet been received. + * @type array|null + */ + protected $server_caps = null; + + /** + * The most recent reply received from the server. + * @type string + */ + protected $last_reply = ''; + + /** + * Output debugging info via a user-selected method. + * @see SMTP::$Debugoutput + * @see SMTP::$do_debug + * @param string $str Debug string to output + * @param integer $level The debug level of this message; see DEBUG_* constants + * @return void + */ + protected function edebug($str, $level = 0) + { + if ($level > $this->do_debug) { + return; + } + //Avoid clash with built-in function names + if (!in_array($this->Debugoutput, array('error_log', 'html', 'echo')) and is_callable($this->Debugoutput)) { + call_user_func($this->Debugoutput, $str, $this->do_debug); + return; + } + switch ($this->Debugoutput) { + case 'error_log': + //Don't output, just log + error_log($str); + break; + case 'html': + //Cleans up output a bit for a better looking, HTML-safe output + echo htmlentities( + preg_replace('/[\r\n]+/', '', $str), + ENT_QUOTES, + 'UTF-8' + ) + . "<br>\n"; + break; + case 'echo': + default: + //Normalize line breaks + $str = preg_replace('/(\r\n|\r|\n)/ms', "\n", $str); + echo gmdate('Y-m-d H:i:s') . "\t" . str_replace( + "\n", + "\n \t ", + trim($str) + )."\n"; + } + } + + /** + * Connect to an SMTP server. + * @param string $host SMTP server IP or host name + * @param integer $port The port number to connect to + * @param integer $timeout How long to wait for the connection to open + * @param array $options An array of options for stream_context_create() + * @access public + * @return boolean + */ + public function connect($host, $port = null, $timeout = 30, $options = array()) + { + static $streamok; + //This is enabled by default since 5.0.0 but some providers disable it + //Check this once and cache the result + if (is_null($streamok)) { + $streamok = function_exists('stream_socket_client'); + } + // Clear errors to avoid confusion + $this->setError(''); + // Make sure we are __not__ connected + if ($this->connected()) { + // Already connected, generate error + $this->setError('Already connected to a server'); + return false; + } + if (empty($port)) { + $port = self::DEFAULT_SMTP_PORT; + } + // Connect to the SMTP server + $this->edebug( + "Connection: opening to $host:$port, t=$timeout, opt=".var_export($options, true), + self::DEBUG_CONNECTION + ); + $errno = 0; + $errstr = ''; + if ($streamok) { + $socket_context = stream_context_create($options); + //Suppress errors; connection failures are handled at a higher level + $this->smtp_conn = @stream_socket_client( + $host . ":" . $port, + $errno, + $errstr, + $timeout, + STREAM_CLIENT_CONNECT, + $socket_context + ); + } else { + //Fall back to fsockopen which should work in more places, but is missing some features + $this->edebug( + "Connection: stream_socket_client not available, falling back to fsockopen", + self::DEBUG_CONNECTION + ); + $this->smtp_conn = fsockopen( + $host, + $port, + $errno, + $errstr, + $timeout + ); + } + // Verify we connected properly + if (!is_resource($this->smtp_conn)) { + $this->setError( + 'Failed to connect to server', + $errno, + $errstr + ); + $this->edebug( + 'SMTP ERROR: ' . $this->error['error'] + . ": $errstr ($errno)", + self::DEBUG_CLIENT + ); + return false; + } + $this->edebug('Connection: opened', self::DEBUG_CONNECTION); + // SMTP server can take longer to respond, give longer timeout for first read + // Windows does not have support for this timeout function + if (substr(PHP_OS, 0, 3) != 'WIN') { + $max = ini_get('max_execution_time'); + // Don't bother if unlimited + if ($max != 0 && $timeout > $max) { + @set_time_limit($timeout); + } + stream_set_timeout($this->smtp_conn, $timeout, 0); + } + // Get any announcement + $announce = $this->get_lines(); + $this->edebug('SERVER -> CLIENT: ' . $announce, self::DEBUG_SERVER); + return true; + } + + /** + * Initiate a TLS (encrypted) session. + * @access public + * @return boolean + */ + public function startTLS() + { + if (!$this->sendCommand('STARTTLS', 'STARTTLS', 220)) { + return false; + } + // Begin encrypted connection + if (!stream_socket_enable_crypto( + $this->smtp_conn, + true, + STREAM_CRYPTO_METHOD_TLS_CLIENT + )) { + return false; + } + return true; + } + + /** + * Perform SMTP authentication. + * Must be run after hello(). + * @see hello() + * @param string $username The user name + * @param string $password The password + * @param string $authtype The auth type (PLAIN, LOGIN, NTLM, CRAM-MD5) + * @param string $realm The auth realm for NTLM + * @param string $workstation The auth workstation for NTLM + * @access public + * @return boolean True if successfully authenticated. + */ + public function authenticate( + $username, + $password, + $authtype = null, + $realm = '', + $workstation = '' + ) { + if (!$this->server_caps) { + $this->setError('Authentication is not allowed before HELO/EHLO'); + return false; + } + + if (array_key_exists('EHLO', $this->server_caps)) { + // SMTP extensions are available. Let's try to find a proper authentication method + + if (!array_key_exists('AUTH', $this->server_caps)) { + $this->setError('Authentication is not allowed at this stage'); + // 'at this stage' means that auth may be allowed after the stage changes + // e.g. after STARTTLS + return false; + } + + self::edebug('Auth method requested: ' . ($authtype ? $authtype : 'UNKNOWN'), self::DEBUG_LOWLEVEL); + self::edebug( + 'Auth methods available on the server: ' . implode(',', $this->server_caps['AUTH']), + self::DEBUG_LOWLEVEL + ); + + if (empty($authtype)) { + foreach (array('LOGIN', 'CRAM-MD5', 'NTLM', 'PLAIN') as $method) { + if (in_array($method, $this->server_caps['AUTH'])) { + $authtype = $method; + break; + } + } + if (empty($authtype)) { + $this->setError('No supported authentication methods found'); + return false; + } + self::edebug('Auth method selected: '.$authtype, self::DEBUG_LOWLEVEL); + } + + if (!in_array($authtype, $this->server_caps['AUTH'])) { + $this->setError("The requested authentication method \"$authtype\" is not supported by the server"); + return false; + } + } elseif (empty($authtype)) { + $authtype = 'LOGIN'; + } + switch ($authtype) { + case 'PLAIN': + // Start authentication + if (!$this->sendCommand('AUTH', 'AUTH PLAIN', 334)) { + return false; + } + // Send encoded username and password + if (!$this->sendCommand( + 'User & Password', + base64_encode("\0" . $username . "\0" . $password), + 235 + ) + ) { + return false; + } + break; + case 'LOGIN': + // Start authentication + if (!$this->sendCommand('AUTH', 'AUTH LOGIN', 334)) { + return false; + } + if (!$this->sendCommand("Username", base64_encode($username), 334)) { + return false; + } + if (!$this->sendCommand("Password", base64_encode($password), 235)) { + return false; + } + break; + case 'NTLM': + /* + * ntlm_sasl_client.php + * Bundled with Permission + * + * How to telnet in windows: + * http://technet.microsoft.com/en-us/library/aa995718%28EXCHG.65%29.aspx + * PROTOCOL Docs http://curl.haxx.se/rfc/ntlm.html#ntlmSmtpAuthentication + */ + require_once 'extras/ntlm_sasl_client.php'; + $temp = new stdClass; + $ntlm_client = new ntlm_sasl_client_class; + //Check that functions are available + if (!$ntlm_client->Initialize($temp)) { + $this->setError($temp->error); + $this->edebug( + 'You need to enable some modules in your php.ini file: ' + . $this->error['error'], + self::DEBUG_CLIENT + ); + return false; + } + //msg1 + $msg1 = $ntlm_client->TypeMsg1($realm, $workstation); //msg1 + + if (!$this->sendCommand( + 'AUTH NTLM', + 'AUTH NTLM ' . base64_encode($msg1), + 334 + ) + ) { + return false; + } + //Though 0 based, there is a white space after the 3 digit number + //msg2 + $challenge = substr($this->last_reply, 3); + $challenge = base64_decode($challenge); + $ntlm_res = $ntlm_client->NTLMResponse( + substr($challenge, 24, 8), + $password + ); + //msg3 + $msg3 = $ntlm_client->TypeMsg3( + $ntlm_res, + $username, + $realm, + $workstation + ); + // send encoded username + return $this->sendCommand('Username', base64_encode($msg3), 235); + case 'CRAM-MD5': + // Start authentication + if (!$this->sendCommand('AUTH CRAM-MD5', 'AUTH CRAM-MD5', 334)) { + return false; + } + // Get the challenge + $challenge = base64_decode(substr($this->last_reply, 4)); + + // Build the response + $response = $username . ' ' . $this->hmac($challenge, $password); + + // send encoded credentials + return $this->sendCommand('Username', base64_encode($response), 235); + default: + $this->setError("Authentication method \"$authtype\" is not supported"); + return false; + } + return true; + } + + /** + * Calculate an MD5 HMAC hash. + * Works like hash_hmac('md5', $data, $key) + * in case that function is not available + * @param string $data The data to hash + * @param string $key The key to hash with + * @access protected + * @return string + */ + protected function hmac($data, $key) + { + if (function_exists('hash_hmac')) { + return hash_hmac('md5', $data, $key); + } + + // The following borrowed from + // http://php.net/manual/en/function.mhash.php#27225 + + // RFC 2104 HMAC implementation for php. + // Creates an md5 HMAC. + // Eliminates the need to install mhash to compute a HMAC + // by Lance Rushing + + $bytelen = 64; // byte length for md5 + if (strlen($key) > $bytelen) { + $key = pack('H*', md5($key)); + } + $key = str_pad($key, $bytelen, chr(0x00)); + $ipad = str_pad('', $bytelen, chr(0x36)); + $opad = str_pad('', $bytelen, chr(0x5c)); + $k_ipad = $key ^ $ipad; + $k_opad = $key ^ $opad; + + return md5($k_opad . pack('H*', md5($k_ipad . $data))); + } + + /** + * Check connection state. + * @access public + * @return boolean True if connected. + */ + public function connected() + { + if (is_resource($this->smtp_conn)) { + $sock_status = stream_get_meta_data($this->smtp_conn); + if ($sock_status['eof']) { + // The socket is valid but we are not connected + $this->edebug( + 'SMTP NOTICE: EOF caught while checking if connected', + self::DEBUG_CLIENT + ); + $this->close(); + return false; + } + return true; // everything looks good + } + return false; + } + + /** + * Close the socket and clean up the state of the class. + * Don't use this function without first trying to use QUIT. + * @see quit() + * @access public + * @return void + */ + public function close() + { + $this->setError(''); + $this->server_caps = null; + $this->helo_rply = null; + if (is_resource($this->smtp_conn)) { + // close the connection and cleanup + fclose($this->smtp_conn); + $this->smtp_conn = null; //Makes for cleaner serialization + $this->edebug('Connection: closed', self::DEBUG_CONNECTION); + } + } + + /** + * Send an SMTP DATA command. + * Issues a data command and sends the msg_data to the server, + * finializing the mail transaction. $msg_data is the message + * that is to be send with the headers. Each header needs to be + * on a single line followed by a <CRLF> with the message headers + * and the message body being separated by and additional <CRLF>. + * Implements rfc 821: DATA <CRLF> + * @param string $msg_data Message data to send + * @access public + * @return boolean + */ + public function data($msg_data) + { + //This will use the standard timelimit + if (!$this->sendCommand('DATA', 'DATA', 354)) { + return false; + } + + /* The server is ready to accept data! + * According to rfc821 we should not send more than 1000 characters on a single line (including the CRLF) + * so we will break the data up into lines by \r and/or \n then if needed we will break each of those into + * smaller lines to fit within the limit. + * We will also look for lines that start with a '.' and prepend an additional '.'. + * NOTE: this does not count towards line-length limit. + */ + + // Normalize line breaks before exploding + $lines = explode("\n", str_replace(array("\r\n", "\r"), "\n", $msg_data)); + + /* To distinguish between a complete RFC822 message and a plain message body, we check if the first field + * of the first line (':' separated) does not contain a space then it _should_ be a header and we will + * process all lines before a blank line as headers. + */ + + $field = substr($lines[0], 0, strpos($lines[0], ':')); + $in_headers = false; + if (!empty($field) && strpos($field, ' ') === false) { + $in_headers = true; + } + + foreach ($lines as $line) { + $lines_out = array(); + if ($in_headers and $line == '') { + $in_headers = false; + } + //Break this line up into several smaller lines if it's too long + //Micro-optimisation: isset($str[$len]) is faster than (strlen($str) > $len), + while (isset($line[self::MAX_LINE_LENGTH])) { + //Working backwards, try to find a space within the last MAX_LINE_LENGTH chars of the line to break on + //so as to avoid breaking in the middle of a word + $pos = strrpos(substr($line, 0, self::MAX_LINE_LENGTH), ' '); + //Deliberately matches both false and 0 + if (!$pos) { + //No nice break found, add a hard break + $pos = self::MAX_LINE_LENGTH - 1; + $lines_out[] = substr($line, 0, $pos); + $line = substr($line, $pos); + } else { + //Break at the found point + $lines_out[] = substr($line, 0, $pos); + //Move along by the amount we dealt with + $line = substr($line, $pos + 1); + } + //If processing headers add a LWSP-char to the front of new line RFC822 section 3.1.1 + if ($in_headers) { + $line = "\t" . $line; + } + } + $lines_out[] = $line; + + //Send the lines to the server + foreach ($lines_out as $line_out) { + //RFC2821 section 4.5.2 + if (!empty($line_out) and $line_out[0] == '.') { + $line_out = '.' . $line_out; + } + $this->client_send($line_out . self::CRLF); + } + } + + //Message data has been sent, complete the command + //Increase timelimit for end of DATA command + $savetimelimit = $this->Timelimit; + $this->Timelimit = $this->Timelimit * 2; + $result = $this->sendCommand('DATA END', '.', 250); + //Restore timelimit + $this->Timelimit = $savetimelimit; + return $result; + } + + /** + * Send an SMTP HELO or EHLO command. + * Used to identify the sending server to the receiving server. + * This makes sure that client and server are in a known state. + * Implements RFC 821: HELO <SP> <domain> <CRLF> + * and RFC 2821 EHLO. + * @param string $host The host name or IP to connect to + * @access public + * @return boolean + */ + public function hello($host = '') + { + //Try extended hello first (RFC 2821) + return (boolean)($this->sendHello('EHLO', $host) or $this->sendHello('HELO', $host)); + } + + /** + * Send an SMTP HELO or EHLO command. + * Low-level implementation used by hello() + * @see hello() + * @param string $hello The HELO string + * @param string $host The hostname to say we are + * @access protected + * @return boolean + */ + protected function sendHello($hello, $host) + { + $noerror = $this->sendCommand($hello, $hello . ' ' . $host, 250); + $this->helo_rply = $this->last_reply; + if ($noerror) { + $this->parseHelloFields($hello); + } else { + $this->server_caps = null; + } + return $noerror; + } + + /** + * Parse a reply to HELO/EHLO command to discover server extensions. + * In case of HELO, the only parameter that can be discovered is a server name. + * @access protected + * @param string $type - 'HELO' or 'EHLO' + */ + protected function parseHelloFields($type) + { + $this->server_caps = array(); + $lines = explode("\n", $this->last_reply); + foreach ($lines as $n => $s) { + $s = trim(substr($s, 4)); + if (!$s) { + continue; + } + $fields = explode(' ', $s); + if (!empty($fields)) { + if (!$n) { + $name = $type; + $fields = $fields[0]; + } else { + $name = array_shift($fields); + if ($name == 'SIZE') { + $fields = ($fields) ? $fields[0] : 0; + } + } + $this->server_caps[$name] = ($fields ? $fields : true); + } + } + } + + /** + * Send an SMTP MAIL command. + * Starts a mail transaction from the email address specified in + * $from. Returns true if successful or false otherwise. If True + * the mail transaction is started and then one or more recipient + * commands may be called followed by a data command. + * Implements rfc 821: MAIL <SP> FROM:<reverse-path> <CRLF> + * @param string $from Source address of this message + * @access public + * @return boolean + */ + public function mail($from) + { + $useVerp = ($this->do_verp ? ' XVERP' : ''); + return $this->sendCommand( + 'MAIL FROM', + 'MAIL FROM:<' . $from . '>' . $useVerp, + 250 + ); + } + + /** + * Send an SMTP QUIT command. + * Closes the socket if there is no error or the $close_on_error argument is true. + * Implements from rfc 821: QUIT <CRLF> + * @param boolean $close_on_error Should the connection close if an error occurs? + * @access public + * @return boolean + */ + public function quit($close_on_error = true) + { + $noerror = $this->sendCommand('QUIT', 'QUIT', 221); + $err = $this->error; //Save any error + if ($noerror or $close_on_error) { + $this->close(); + $this->error = $err; //Restore any error from the quit command + } + return $noerror; + } + + /** + * Send an SMTP RCPT command. + * Sets the TO argument to $toaddr. + * Returns true if the recipient was accepted false if it was rejected. + * Implements from rfc 821: RCPT <SP> TO:<forward-path> <CRLF> + * @param string $toaddr The address the message is being sent to + * @access public + * @return boolean + */ + public function recipient($toaddr) + { + return $this->sendCommand( + 'RCPT TO', + 'RCPT TO:<' . $toaddr . '>', + array(250, 251) + ); + } + + /** + * Send an SMTP RSET command. + * Abort any transaction that is currently in progress. + * Implements rfc 821: RSET <CRLF> + * @access public + * @return boolean True on success. + */ + public function reset() + { + return $this->sendCommand('RSET', 'RSET', 250); + } + + /** + * Send a command to an SMTP server and check its return code. + * @param string $command The command name - not sent to the server + * @param string $commandstring The actual command to send + * @param integer|array $expect One or more expected integer success codes + * @access protected + * @return boolean True on success. + */ + protected function sendCommand($command, $commandstring, $expect) + { + if (!$this->connected()) { + $this->setError("Called $command without being connected"); + return false; + } + $this->client_send($commandstring . self::CRLF); + + $this->last_reply = $this->get_lines(); + // Fetch SMTP code and possible error code explanation + $matches = array(); + if (preg_match("/^([0-9]{3})[ -](?:([0-9]\\.[0-9]\\.[0-9]) )?/", $this->last_reply, $matches)) { + $code = $matches[1]; + $code_ex = (count($matches) > 2 ? $matches[2] : null); + // Cut off error code from each response line + $detail = preg_replace( + "/{$code}[ -]".($code_ex ? str_replace('.', '\\.', $code_ex).' ' : '')."/m", + '', + $this->last_reply + ); + } else { + // Fall back to simple parsing if regex fails + $code = substr($this->last_reply, 0, 3); + $code_ex = null; + $detail = substr($this->last_reply, 4); + } + + $this->edebug('SERVER -> CLIENT: ' . $this->last_reply, self::DEBUG_SERVER); + + if (!in_array($code, (array)$expect)) { + $this->setError( + "$command command failed", + $detail, + $code, + $code_ex + ); + $this->edebug( + 'SMTP ERROR: ' . $this->error['error'] . ': ' . $this->last_reply, + self::DEBUG_CLIENT + ); + return false; + } + + $this->setError(''); + return true; + } + + /** + * Send an SMTP SAML command. + * Starts a mail transaction from the email address specified in $from. + * Returns true if successful or false otherwise. If True + * the mail transaction is started and then one or more recipient + * commands may be called followed by a data command. This command + * will send the message to the users terminal if they are logged + * in and send them an email. + * Implements rfc 821: SAML <SP> FROM:<reverse-path> <CRLF> + * @param string $from The address the message is from + * @access public + * @return boolean + */ + public function sendAndMail($from) + { + return $this->sendCommand('SAML', "SAML FROM:$from", 250); + } + + /** + * Send an SMTP VRFY command. + * @param string $name The name to verify + * @access public + * @return boolean + */ + public function verify($name) + { + return $this->sendCommand('VRFY', "VRFY $name", array(250, 251)); + } + + /** + * Send an SMTP NOOP command. + * Used to keep keep-alives alive, doesn't actually do anything + * @access public + * @return boolean + */ + public function noop() + { + return $this->sendCommand('NOOP', 'NOOP', 250); + } + + /** + * Send an SMTP TURN command. + * This is an optional command for SMTP that this class does not support. + * This method is here to make the RFC821 Definition complete for this class + * and _may_ be implemented in future + * Implements from rfc 821: TURN <CRLF> + * @access public + * @return boolean + */ + public function turn() + { + $this->setError('The SMTP TURN command is not implemented'); + $this->edebug('SMTP NOTICE: ' . $this->error['error'], self::DEBUG_CLIENT); + return false; + } + + /** + * Send raw data to the server. + * @param string $data The data to send + * @access public + * @return integer|boolean The number of bytes sent to the server or false on error + */ + public function client_send($data) + { + $this->edebug("CLIENT -> SERVER: $data", self::DEBUG_CLIENT); + return fwrite($this->smtp_conn, $data); + } + + /** + * Get the latest error. + * @access public + * @return array + */ + public function getError() + { + return $this->error; + } + + /** + * Get SMTP extensions available on the server + * @access public + * @return array|null + */ + public function getServerExtList() + { + return $this->server_caps; + } + + /** + * A multipurpose method + * The method works in three ways, dependent on argument value and current state + * 1. HELO/EHLO was not sent - returns null and set up $this->error + * 2. HELO was sent + * $name = 'HELO': returns server name + * $name = 'EHLO': returns boolean false + * $name = any string: returns null and set up $this->error + * 3. EHLO was sent + * $name = 'HELO'|'EHLO': returns server name + * $name = any string: if extension $name exists, returns boolean True + * or its options. Otherwise returns boolean False + * In other words, one can use this method to detect 3 conditions: + * - null returned: handshake was not or we don't know about ext (refer to $this->error) + * - false returned: the requested feature exactly not exists + * - positive value returned: the requested feature exists + * @param string $name Name of SMTP extension or 'HELO'|'EHLO' + * @return mixed + */ + public function getServerExt($name) + { + if (!$this->server_caps) { + $this->setError('No HELO/EHLO was sent'); + return null; + } + + // the tight logic knot ;) + if (!array_key_exists($name, $this->server_caps)) { + if ($name == 'HELO') { + return $this->server_caps['EHLO']; + } + if ($name == 'EHLO' || array_key_exists('EHLO', $this->server_caps)) { + return false; + } + $this->setError('HELO handshake was used. Client knows nothing about server extensions'); + return null; + } + + return $this->server_caps[$name]; + } + + /** + * Get the last reply from the server. + * @access public + * @return string + */ + public function getLastReply() + { + return $this->last_reply; + } + + /** + * Read the SMTP server's response. + * Either before eof or socket timeout occurs on the operation. + * With SMTP we can tell if we have more lines to read if the + * 4th character is '-' symbol. If it is a space then we don't + * need to read anything else. + * @access protected + * @return string + */ + protected function get_lines() + { + // If the connection is bad, give up straight away + if (!is_resource($this->smtp_conn)) { + return ''; + } + $data = ''; + $endtime = 0; + stream_set_timeout($this->smtp_conn, $this->Timeout); + if ($this->Timelimit > 0) { + $endtime = time() + $this->Timelimit; + } + while (is_resource($this->smtp_conn) && !feof($this->smtp_conn)) { + $str = @fgets($this->smtp_conn, 515); + $this->edebug("SMTP -> get_lines(): \$data was \"$data\"", self::DEBUG_LOWLEVEL); + $this->edebug("SMTP -> get_lines(): \$str is \"$str\"", self::DEBUG_LOWLEVEL); + $data .= $str; + $this->edebug("SMTP -> get_lines(): \$data is \"$data\"", self::DEBUG_LOWLEVEL); + // If 4th character is a space, we are done reading, break the loop, micro-optimisation over strlen + if ((isset($str[3]) and $str[3] == ' ')) { + break; + } + // Timed-out? Log and break + $info = stream_get_meta_data($this->smtp_conn); + if ($info['timed_out']) { + $this->edebug( + 'SMTP -> get_lines(): timed-out (' . $this->Timeout . ' sec)', + self::DEBUG_LOWLEVEL + ); + break; + } + // Now check if reads took too long + if ($endtime and time() > $endtime) { + $this->edebug( + 'SMTP -> get_lines(): timelimit reached ('. + $this->Timelimit . ' sec)', + self::DEBUG_LOWLEVEL + ); + break; + } + } + return $data; + } + + /** + * Enable or disable VERP address generation. + * @param boolean $enabled + */ + public function setVerp($enabled = false) + { + $this->do_verp = $enabled; + } + + /** + * Get VERP address generation mode. + * @return boolean + */ + public function getVerp() + { + return $this->do_verp; + } + + /** + * Set error messages and codes. + * @param string $message The error message + * @param string $detail Further detail on the error + * @param string $smtp_code An associated SMTP error code + * @param string $smtp_code_ex Extended SMTP code + */ + protected function setError($message, $detail = '', $smtp_code = '', $smtp_code_ex = '') + { + $this->error = array( + 'error' => $message, + 'detail' => $detail, + 'smtp_code' => $smtp_code, + 'smtp_code_ex' => $smtp_code_ex + ); + } + + /** + * Set debug output method. + * @param string|callable $method The name of the mechanism to use for debugging output, or a callable to handle it. + */ + public function setDebugOutput($method = 'echo') + { + $this->Debugoutput = $method; + } + + /** + * Get debug output method. + * @return string + */ + public function getDebugOutput() + { + return $this->Debugoutput; + } + + /** + * Set debug output level. + * @param integer $level + */ + public function setDebugLevel($level = 0) + { + $this->do_debug = $level; + } + + /** + * Get debug output level. + * @return integer + */ + public function getDebugLevel() + { + return $this->do_debug; + } + + /** + * Set SMTP timeout. + * @param integer $timeout + */ + public function setTimeout($timeout = 0) + { + $this->Timeout = $timeout; + } + + /** + * Get SMTP timeout. + * @return integer + */ + public function getTimeout() + { + return $this->Timeout; + } +} |