??????????????? ??????????????? Socket.php000064400000052506152535652640006532 0ustar00 * @author Chuck Hagenbuch * @copyright 1997-2017 The PHP Group * @license http://opensource.org/licenses/bsd-license.php BSD-2-Clause * @link http://pear.php.net/packages/Net_Socket */ require_once 'PEAR.php'; define('NET_SOCKET_READ', 1); define('NET_SOCKET_WRITE', 2); define('NET_SOCKET_ERROR', 4); /** * Generalized Socket class. * * @category Net * @package Net_Socket * @author Stig Bakken * @author Chuck Hagenbuch * @copyright 1997-2017 The PHP Group * @license http://opensource.org/licenses/bsd-license.php BSD-2-Clause * @link http://pear.php.net/packages/Net_Socket */ class Net_Socket extends PEAR { /** * Socket file pointer. * @var resource $fp */ public $fp = null; /** * Whether the socket is blocking. Defaults to true. * @var boolean $blocking */ public $blocking = true; /** * Whether the socket is persistent. Defaults to false. * @var boolean $persistent */ public $persistent = false; /** * The IP address to connect to. * @var string $addr */ public $addr = ''; /** * The port number to connect to. * @var integer $port */ public $port = 0; /** * Number of seconds to wait on socket operations before assuming * there's no more data. Defaults to no timeout. * @var integer|float $timeout */ public $timeout = null; /** * Number of bytes to read at a time in readLine() and * readAll(). Defaults to 2048. * @var integer $lineLength */ public $lineLength = 2048; /** * The string to use as a newline terminator. Usually "\r\n" or "\n". * @var string $newline */ public $newline = "\r\n"; /** * Connect to the specified port. If called when the socket is * already connected, it disconnects and connects again. * * @param string $addr IP address or host name (may be with protocol prefix). * @param integer $port TCP port number. * @param boolean $persistent (optional) Whether the connection is * persistent (kept open between requests * by the web server). * @param integer $timeout (optional) Connection socket timeout. * @param array $options See options for stream_context_create. * * @access public * * @return boolean|PEAR_Error True on success or a PEAR_Error on failure. */ public function connect( $addr, $port = 0, $persistent = null, $timeout = null, $options = null ) { if (is_resource($this->fp)) { @fclose($this->fp); $this->fp = null; } if (!$addr) { return $this->raiseError('$addr cannot be empty'); } else { if (strspn($addr, ':.0123456789') === strlen($addr)) { $this->addr = strpos($addr, ':') !== false ? '[' . $addr . ']' : $addr; } else { $this->addr = $addr; } } $this->port = $port % 65536; if ($persistent !== null) { $this->persistent = $persistent; } $openfunc = $this->persistent ? 'pfsockopen' : 'fsockopen'; $errno = 0; $errstr = ''; if (function_exists('error_clear_last')) { error_clear_last(); } else { $old_track_errors = @ini_set('track_errors', 1); } if ($timeout <= 0) { $timeout = @ini_get('default_socket_timeout'); } if ($options && function_exists('stream_context_create')) { $context = stream_context_create($options); // Since PHP 5 fsockopen doesn't allow context specification if (function_exists('stream_socket_client')) { $flags = STREAM_CLIENT_CONNECT; if ($this->persistent) { $flags = STREAM_CLIENT_PERSISTENT; } $addr = $this->addr . ':' . $this->port; $fp = @stream_socket_client($addr, $errno, $errstr, $timeout, $flags, $context); } else { $fp = @$openfunc($this->addr, $this->port, $errno, $errstr, $timeout, $context); } } else { $fp = @$openfunc($this->addr, $this->port, $errno, $errstr, $timeout); } if (!$fp) { if ($errno === 0 && !strlen($errstr)) { $errstr = ''; if (isset($old_track_errors)) { $errstr = $php_errormsg ?: ''; @ini_set('track_errors', $old_track_errors); } else { $lastError = error_get_last(); if (isset($lastError['message'])) { $errstr = $lastError['message']; } } } return $this->raiseError($errstr, $errno); } if (isset($old_track_errors)) { @ini_set('track_errors', $old_track_errors); } $this->fp = $fp; $this->setTimeout(); return $this->setBlocking($this->blocking); } /** * Disconnects from the peer, closes the socket. * * @access public * @return mixed true on success or a PEAR_Error instance otherwise */ public function disconnect() { if (!is_resource($this->fp)) { return $this->raiseError('not connected'); } @fclose($this->fp); $this->fp = null; return true; } /** * Set the newline character/sequence to use. * * @param string $newline Newline character(s) * @return boolean True */ public function setNewline($newline) { $this->newline = $newline; return true; } /** * Find out if the socket is in blocking mode. * * @access public * @return boolean The current blocking mode. */ public function isBlocking() { return $this->blocking; } /** * Sets whether the socket connection should be blocking or * not. A read call to a non-blocking socket will return immediately * if there is no data available, whereas it will block until there * is data for blocking sockets. * * @param boolean $mode True for blocking sockets, false for nonblocking. * * @access public * @return mixed true on success or a PEAR_Error instance otherwise */ public function setBlocking($mode) { if (!is_resource($this->fp)) { return $this->raiseError('not connected'); } $this->blocking = $mode; stream_set_blocking($this->fp, (int)$this->blocking); return true; } /** * Sets the timeout value on socket descriptor, * expressed in the sum of seconds and microseconds * * @param integer $seconds Seconds. * @param integer $microseconds Microseconds, optional. * * @access public * @return mixed True on success or false on failure or * a PEAR_Error instance when not connected */ public function setTimeout($seconds = null, $microseconds = null) { if (!is_resource($this->fp)) { return $this->raiseError('not connected'); } if ($seconds === null && $microseconds === null) { $seconds = (int)$this->timeout; $microseconds = (int)(($this->timeout - $seconds) * 1000000); } else { $this->timeout = $seconds + $microseconds / 1000000; } if ($this->timeout > 0) { return stream_set_timeout($this->fp, (int)$seconds, (int)$microseconds); } else { return false; } } /** * Sets the file buffering size on the stream. * See php's stream_set_write_buffer for more information. * * @param integer $size Write buffer size. * * @access public * @return mixed on success or an PEAR_Error object otherwise */ public function setWriteBuffer($size) { if (!is_resource($this->fp)) { return $this->raiseError('not connected'); } $returned = stream_set_write_buffer($this->fp, $size); if ($returned === 0) { return true; } return $this->raiseError('Cannot set write buffer.'); } /** * Returns information about an existing socket resource. * Currently returns four entries in the result array: * *

* timed_out (bool) - The socket timed out waiting for data
* blocked (bool) - The socket was blocked
* eof (bool) - Indicates EOF event
* unread_bytes (int) - Number of bytes left in the socket buffer
*

* * @access public * @return mixed Array containing information about existing socket * resource or a PEAR_Error instance otherwise */ public function getStatus() { if (!is_resource($this->fp)) { return $this->raiseError('not connected'); } return stream_get_meta_data($this->fp); } /** * Get a specified line of data * * @param int $size Reading ends when size - 1 bytes have been read, * or a newline or an EOF (whichever comes first). * If no size is specified, it will keep reading from * the stream until it reaches the end of the line. * * @access public * @return mixed $size bytes of data from the socket, or a PEAR_Error if * not connected. If an error occurs, FALSE is returned. */ public function gets($size = null) { if (!is_resource($this->fp)) { return $this->raiseError('not connected'); } if (null === $size) { return @fgets($this->fp); } else { return @fgets($this->fp, $size); } } /** * Read a specified amount of data. This is guaranteed to return, * and has the added benefit of getting everything in one fread() * chunk; if you know the size of the data you're getting * beforehand, this is definitely the way to go. * * @param integer $size The number of bytes to read from the socket. * * @access public * @return string $size bytes of data from the socket, or a PEAR_Error if * not connected. */ public function read($size) { if (!is_resource($this->fp)) { return $this->raiseError('not connected'); } return @fread($this->fp, $size); } /** * Write a specified amount of data. * * @param string $data Data to write. * @param integer $blocksize Amount of data to write at once. * NULL means all at once. * * @access public * @return mixed If the socket is not connected, returns an instance of * PEAR_Error. * If the write succeeds, returns the number of bytes written. * If the write fails, returns false. * If the socket times out, returns an instance of PEAR_Error. */ public function write($data, $blocksize = null) { if (!is_resource($this->fp)) { return $this->raiseError('not connected'); } if (null === $blocksize && !OS_WINDOWS) { $written = @fwrite($this->fp, $data); // Check for timeout or lost connection if ($written === false) { $meta_data = $this->getStatus(); if (!is_array($meta_data)) { return $meta_data; // PEAR_Error } if (!empty($meta_data['timed_out'])) { return $this->raiseError('timed out'); } } return $written; } else { if (null === $blocksize) { $blocksize = 1024; } $pos = 0; $size = strlen($data); while ($pos < $size) { $written = @fwrite($this->fp, substr($data, $pos, $blocksize)); // Check for timeout or lost connection if ($written === false) { $meta_data = $this->getStatus(); if (!is_array($meta_data)) { return $meta_data; // PEAR_Error } if (!empty($meta_data['timed_out'])) { return $this->raiseError('timed out'); } return $written; } $pos += $written; } return $pos; } } /** * Write a line of data to the socket, followed by a trailing newline. * * @param string $data Data to write * * @access public * @return mixed fwrite() result, or PEAR_Error when not connected */ public function writeLine($data) { if (!is_resource($this->fp)) { return $this->raiseError('not connected'); } return fwrite($this->fp, $data . $this->newline); } /** * Tests for end-of-file on a socket descriptor. * * Also returns true if the socket is disconnected. * * @access public * @return bool */ public function eof() { return (!is_resource($this->fp) || feof($this->fp)); } /** * Reads a byte of data * * @access public * @return integer 1 byte of data from the socket, or a PEAR_Error if * not connected. */ public function readByte() { if (!is_resource($this->fp)) { return $this->raiseError('not connected'); } return ord(@fread($this->fp, 1)); } /** * Reads a word of data * * @access public * @return integer 1 word of data from the socket, or a PEAR_Error if * not connected. */ public function readWord() { if (!is_resource($this->fp)) { return $this->raiseError('not connected'); } $buf = @fread($this->fp, 2); return (ord($buf[0]) + (ord($buf[1]) << 8)); } /** * Reads an int of data * * @access public * @return integer 1 int of data from the socket, or a PEAR_Error if * not connected. */ public function readInt() { if (!is_resource($this->fp)) { return $this->raiseError('not connected'); } $buf = @fread($this->fp, 4); return (ord($buf[0]) + (ord($buf[1]) << 8) + (ord($buf[2]) << 16) + (ord($buf[3]) << 24)); } /** * Reads a zero-terminated string of data * * @access public * @return string, or a PEAR_Error if * not connected. */ public function readString() { if (!is_resource($this->fp)) { return $this->raiseError('not connected'); } $string = ''; while (($char = @fread($this->fp, 1)) !== "\x00") { $string .= $char; } return $string; } /** * Reads an IP Address and returns it in a dot formatted string * * @access public * @return string Dot formatted string, or a PEAR_Error if * not connected. */ public function readIPAddress() { if (!is_resource($this->fp)) { return $this->raiseError('not connected'); } $buf = @fread($this->fp, 4); return sprintf('%d.%d.%d.%d', ord($buf[0]), ord($buf[1]), ord($buf[2]), ord($buf[3])); } /** * Read until either the end of the socket or a newline, whichever * comes first. Strips the trailing newline from the returned data. * * @access public * @return string All available data up to a newline, without that * newline, or until the end of the socket, or a PEAR_Error if * not connected. */ public function readLine() { if (!is_resource($this->fp)) { return $this->raiseError('not connected'); } $line = ''; $timeout = time() + $this->timeout; while (!feof($this->fp) && (!$this->timeout || time() < $timeout)) { $line .= @fgets($this->fp, $this->lineLength); if (substr($line, -1) == "\n") { return rtrim($line, $this->newline); } } return $line; } /** * Read until the socket closes, or until there is no more data in * the inner PHP buffer. If the inner buffer is empty, in blocking * mode we wait for at least 1 byte of data. Therefore, in * blocking mode, if there is no data at all to be read, this * function will never exit (unless the socket is closed on the * remote end). * * @access public * * @return string All data until the socket closes, or a PEAR_Error if * not connected. */ public function readAll() { if (!is_resource($this->fp)) { return $this->raiseError('not connected'); } $data = ''; $timeout = time() + $this->timeout; while (!feof($this->fp) && (!$this->timeout || time() < $timeout)) { $data .= @fread($this->fp, $this->lineLength); } return $data; } /** * Runs the equivalent of the select() system call on the socket * with a timeout specified by tv_sec and tv_usec. * * @param integer $state Which of read/write/error to check for. * @param integer $tv_sec Number of seconds for timeout. * @param integer $tv_usec Number of microseconds for timeout. * * @access public * @return False if select fails, integer describing which of read/write/error * are ready, or PEAR_Error if not connected. */ public function select($state, $tv_sec, $tv_usec = 0) { if (!is_resource($this->fp)) { return $this->raiseError('not connected'); } $read = null; $write = null; $except = null; if ($state & NET_SOCKET_READ) { $read[] = $this->fp; } if ($state & NET_SOCKET_WRITE) { $write[] = $this->fp; } if ($state & NET_SOCKET_ERROR) { $except[] = $this->fp; } if (false === ($sr = stream_select($read, $write, $except, $tv_sec, $tv_usec)) ) { return false; } $result = 0; if (count($read)) { $result |= NET_SOCKET_READ; } if (count($write)) { $result |= NET_SOCKET_WRITE; } if (count($except)) { $result |= NET_SOCKET_ERROR; } return $result; } /** * Turns encryption on/off on a connected socket. * * @param bool $enabled Set this parameter to true to enable encryption * and false to disable encryption. * @param integer $type Type of encryption. See stream_socket_enable_crypto() * for values. * * @see http://se.php.net/manual/en/function.stream-socket-enable-crypto.php * @access public * @return false on error, true on success and 0 if there isn't enough data * and the user should try again (non-blocking sockets only). * A PEAR_Error object is returned if the socket is not * connected */ public function enableCrypto($enabled, $type) { if (version_compare(phpversion(), '5.1.0', '>=')) { if (!is_resource($this->fp)) { return $this->raiseError('not connected'); } return @stream_socket_enable_crypto($this->fp, $enabled, $type); } else { $msg = 'Net_Socket::enableCrypto() requires php version >= 5.1.0'; return $this->raiseError($msg); } } } SMTP.php000064400000123611152535652640006061 0ustar00 | // | Jon Parise | // | Damian Alejandro Fernandez Sosa | // +----------------------------------------------------------------------+ require_once 'PEAR.php'; require_once 'Net/Socket.php'; /** * Provides an implementation of the SMTP protocol using PEAR's * Net_Socket class. * * @package Net_SMTP * @author Chuck Hagenbuch * @author Jon Parise * @author Damian Alejandro Fernandez Sosa * @license http://opensource.org/licenses/bsd-license.php BSD-2-Clause * * @example basic.php A basic implementation of the Net_SMTP package. */ class Net_SMTP { /** * The server to connect to. * @var string */ public $host = 'localhost'; /** * The port to connect to. * @var int */ public $port = 25; /** * The value to give when sending EHLO or HELO. * @var string */ public $localhost = 'localhost'; /** * List of supported authentication methods, in preferential order. * @var array */ public $auth_methods = array(); /** * Use SMTP command pipelining (specified in RFC 2920) if the SMTP * server supports it. * * When pipeling is enabled, rcptTo(), mailFrom(), sendFrom(), * somlFrom() and samlFrom() do not wait for a response from the * SMTP server but return immediately. * * @var bool */ public $pipelining = false; /** * Number of pipelined commands. * @var int */ protected $pipelined_commands = 0; /** * Should debugging output be enabled? * @var boolean */ protected $debug = false; /** * Debug output handler. * @var callback */ protected $debug_handler = null; /** * The socket resource being used to connect to the SMTP server. * @var resource */ protected $socket = null; /** * Array of socket options that will be passed to Net_Socket::connect(). * @see stream_context_create() * @var array */ protected $socket_options = null; /** * The socket I/O timeout value in seconds. * @var int */ protected $timeout = 0; /** * The most recent server response code. * @var int */ protected $code = -1; /** * The most recent server response arguments. * @var array */ protected $arguments = array(); /** * Stores the SMTP server's greeting string. * @var string */ protected $greeting = null; /** * Stores detected features of the SMTP server. * @var array */ protected $esmtp = array(); /** * Instantiates a new Net_SMTP object, overriding any defaults * with parameters that are passed in. * * If you have SSL support in PHP, you can connect to a server * over SSL using an 'ssl://' prefix: * * // 465 is a common smtps port. * $smtp = new Net_SMTP('ssl://mail.host.com', 465); * $smtp->connect(); * * @param string $host The server to connect to. * @param integer $port The port to connect to. * @param string $localhost The value to give when sending EHLO or HELO. * @param boolean $pipelining Use SMTP command pipelining * @param integer $timeout Socket I/O timeout in seconds. * @param array $socket_options Socket stream_context_create() options. * * @since 1.0 */ public function __construct($host = null, $port = null, $localhost = null, $pipelining = false, $timeout = 0, $socket_options = null ) { if (isset($host)) { $this->host = $host; } if (isset($port)) { $this->port = $port; } if (isset($localhost)) { $this->localhost = $localhost; } $this->pipelining = $pipelining; $this->socket = new Net_Socket(); $this->socket_options = $socket_options; $this->timeout = $timeout; /* Include the Auth_SASL package. If the package is available, we * enable the authentication methods that depend upon it. */ if (@include_once 'Auth/SASL.php') { $this->setAuthMethod('CRAM-MD5', array($this, 'authCramMD5')); $this->setAuthMethod('DIGEST-MD5', array($this, 'authDigestMD5')); } /* These standard authentication methods are always available. */ $this->setAuthMethod('LOGIN', array($this, 'authLogin'), false); $this->setAuthMethod('PLAIN', array($this, 'authPlain'), false); } /** * Set the socket I/O timeout value in seconds plus microseconds. * * @param integer $seconds Timeout value in seconds. * @param integer $microseconds Additional value in microseconds. * * @since 1.5.0 */ public function setTimeout($seconds, $microseconds = 0) { return $this->socket->setTimeout($seconds, $microseconds); } /** * Set the value of the debugging flag. * * @param boolean $debug New value for the debugging flag. * @param callback $handler Debug handler callback * * @since 1.1.0 */ public function setDebug($debug, $handler = null) { $this->debug = $debug; $this->debug_handler = $handler; } /** * Write the given debug text to the current debug output handler. * * @param string $message Debug mesage text. * * @since 1.3.3 */ protected function debug($message) { if ($this->debug) { if ($this->debug_handler) { call_user_func_array( $this->debug_handler, array(&$this, $message) ); } else { echo "DEBUG: $message\n"; } } } /** * Send the given string of data to the server. * * @param string $data The string of data to send. * * @return mixed The number of bytes that were actually written, * or a PEAR_Error object on failure. * * @since 1.1.0 */ protected function send($data) { $this->debug("Send: $data"); $result = $this->socket->write($data); if (!$result || PEAR::isError($result)) { $msg = $result ? $result->getMessage() : "unknown error"; return PEAR::raiseError("Failed to write to socket: $msg"); } return $result; } /** * Send a command to the server with an optional string of * arguments. A carriage return / linefeed (CRLF) sequence will * be appended to each command string before it is sent to the * SMTP server - an error will be thrown if the command string * already contains any newline characters. Use send() for * commands that must contain newlines. * * @param string $command The SMTP command to send to the server. * @param string $args A string of optional arguments to append * to the command. * * @return mixed The result of the send() call. * * @since 1.1.0 */ protected function put($command, $args = '') { if (!empty($args)) { $command .= ' ' . $args; } if (strcspn($command, "\r\n") !== strlen($command)) { return PEAR::raiseError('Commands cannot contain newlines'); } return $this->send($command . "\r\n"); } /** * Read a reply from the SMTP server. The reply consists of a response * code and a response message. * * @param mixed $valid The set of valid response codes. These * may be specified as an array of integer * values or as a single integer value. * @param bool $later Do not parse the response now, but wait * until the last command in the pipelined * command group * * @return mixed True if the server returned a valid response code or * a PEAR_Error object is an error condition is reached. * * @since 1.1.0 * * @see getResponse */ protected function parseResponse($valid, $later = false) { $this->code = -1; $this->arguments = array(); if ($later) { $this->pipelined_commands++; return true; } for ($i = 0; $i <= $this->pipelined_commands; $i++) { while ($line = $this->socket->readLine()) { $this->debug("Recv: $line"); /* If we receive an empty line, the connection was closed. */ if (empty($line)) { $this->disconnect(); return PEAR::raiseError('Connection was closed'); } /* Read the code and store the rest in the arguments array. */ $code = substr($line, 0, 3); $this->arguments[] = trim(substr($line, 4)); /* Check the syntax of the response code. */ if (is_numeric($code)) { $this->code = (int)$code; } else { $this->code = -1; break; } /* If this is not a multiline response, we're done. */ if (substr($line, 3, 1) != '-') { break; } } } $this->pipelined_commands = 0; /* Compare the server's response code with the valid code/codes. */ if (is_int($valid) && ($this->code === $valid)) { return true; } elseif (is_array($valid) && in_array($this->code, $valid, true)) { return true; } return PEAR::raiseError('Invalid response code received from server', $this->code); } /** * Issue an SMTP command and verify its response. * * @param string $command The SMTP command string or data. * @param mixed $valid The set of valid response codes. These * may be specified as an array of integer * values or as a single integer value. * * @return mixed True on success or a PEAR_Error object on failure. * * @since 1.6.0 */ public function command($command, $valid) { if (PEAR::isError($error = $this->put($command))) { return $error; } if (PEAR::isError($error = $this->parseResponse($valid))) { return $error; } return true; } /** * Return a 2-tuple containing the last response from the SMTP server. * * @return array A two-element array: the first element contains the * response code as an integer and the second element * contains the response's arguments as a string. * * @since 1.1.0 */ public function getResponse() { return array($this->code, join("\n", $this->arguments)); } /** * Return the SMTP server's greeting string. * * @return string A string containing the greeting string, or null if * a greeting has not been received. * * @since 1.3.3 */ public function getGreeting() { return $this->greeting; } /** * Attempt to connect to the SMTP server. * * @param int $timeout The timeout value (in seconds) for the * socket connection attempt. * @param bool $persistent Should a persistent socket connection * be used? * * @return mixed Returns a PEAR_Error with an error message on any * kind of failure, or true on success. * @since 1.0 */ public function connect($timeout = null, $persistent = false) { $this->greeting = null; $result = $this->socket->connect( $this->host, $this->port, $persistent, $timeout, $this->socket_options ); if (PEAR::isError($result)) { return PEAR::raiseError( 'Failed to connect socket: ' . $result->getMessage() ); } /* * Now that we're connected, reset the socket's timeout value for * future I/O operations. This allows us to have different socket * timeout values for the initial connection (our $timeout parameter) * and all other socket operations. */ if ($this->timeout > 0) { if (PEAR::isError($error = $this->setTimeout($this->timeout))) { return $error; } } if (PEAR::isError($error = $this->parseResponse(220))) { return $error; } /* Extract and store a copy of the server's greeting string. */ list(, $this->greeting) = $this->getResponse(); if (PEAR::isError($error = $this->negotiate())) { return $error; } return true; } /** * Attempt to disconnect from the SMTP server. * * @return mixed Returns a PEAR_Error with an error message on any * kind of failure, or true on success. * @since 1.0 */ public function disconnect() { if (PEAR::isError($error = $this->put('QUIT'))) { return $error; } if (PEAR::isError($error = $this->parseResponse(221))) { return $error; } if (PEAR::isError($error = $this->socket->disconnect())) { return PEAR::raiseError( 'Failed to disconnect socket: ' . $error->getMessage() ); } return true; } /** * Attempt to send the EHLO command and obtain a list of ESMTP * extensions available, and failing that just send HELO. * * @return mixed Returns a PEAR_Error with an error message on any * kind of failure, or true on success. * * @since 1.1.0 */ protected function negotiate() { if (PEAR::isError($error = $this->put('EHLO', $this->localhost))) { return $error; } if (PEAR::isError($this->parseResponse(250))) { /* If the EHLO failed, try the simpler HELO command. */ if (PEAR::isError($error = $this->put('HELO', $this->localhost))) { return $error; } if (PEAR::isError($this->parseResponse(250))) { return PEAR::raiseError('HELO was not accepted', $this->code); } return true; } foreach ($this->arguments as $argument) { $verb = strtok($argument, ' '); $len = strlen($verb); $arguments = substr($argument, $len + 1, strlen($argument) - $len - 1); $this->esmtp[$verb] = $arguments; } if (!isset($this->esmtp['PIPELINING'])) { $this->pipelining = false; } return true; } /** * Returns the name of the best authentication method that the server * has advertised. * * @return mixed Returns a string containing the name of the best * supported authentication method or a PEAR_Error object * if a failure condition is encountered. * @since 1.1.0 */ protected function getBestAuthMethod() { $available_methods = explode(' ', $this->esmtp['AUTH']); foreach ($this->auth_methods as $method => $callback) { if (in_array($method, $available_methods)) { return $method; } } return PEAR::raiseError('No supported authentication methods'); } /** * Attempt to do SMTP authentication. * * @param string $uid The userid to authenticate as. * @param string $pwd The password to authenticate with. * @param string $method The requested authentication method. If none is * specified, the best supported method will be used. * @param bool $tls Flag indicating whether or not TLS should be attempted. * @param string $authz An optional authorization identifier. If specified, this * identifier will be used as the authorization proxy. * * @return mixed Returns a PEAR_Error with an error message on any * kind of failure, or true on success. * @since 1.0 */ public function auth($uid, $pwd , $method = '', $tls = true, $authz = '') { /* We can only attempt a TLS connection if one has been requested, * we're running PHP 5.1.0 or later, have access to the OpenSSL * extension, are connected to an SMTP server which supports the * STARTTLS extension, and aren't already connected over a secure * (SSL) socket connection. */ if ($tls && version_compare(PHP_VERSION, '5.1.0', '>=') && extension_loaded('openssl') && isset($this->esmtp['STARTTLS']) && strncasecmp($this->host, 'ssl://', 6) !== 0 ) { /* Start the TLS connection attempt. */ if (PEAR::isError($result = $this->put('STARTTLS'))) { return $result; } if (PEAR::isError($result = $this->parseResponse(220))) { return $result; } if (isset($this->socket_options['ssl']['crypto_method'])) { $crypto_method = $this->socket_options['ssl']['crypto_method']; } else { /* STREAM_CRYPTO_METHOD_TLS_ANY_CLIENT constant does not exist * and STREAM_CRYPTO_METHOD_SSLv23_CLIENT constant is * inconsistent across PHP versions. */ $crypto_method = STREAM_CRYPTO_METHOD_TLS_CLIENT | @STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT | @STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT; } if (PEAR::isError($result = $this->socket->enableCrypto(true, $crypto_method))) { return $result; } elseif ($result !== true) { return PEAR::raiseError('STARTTLS failed'); } /* Send EHLO again to recieve the AUTH string from the * SMTP server. */ $this->negotiate(); } if (empty($this->esmtp['AUTH'])) { return PEAR::raiseError('SMTP server does not support authentication'); } /* If no method has been specified, get the name of the best * supported method advertised by the SMTP server. */ if (empty($method)) { if (PEAR::isError($method = $this->getBestAuthMethod())) { /* Return the PEAR_Error object from _getBestAuthMethod(). */ return $method; } } else { $method = strtoupper($method); if (!array_key_exists($method, $this->auth_methods)) { return PEAR::raiseError("$method is not a supported authentication method"); } } if (!isset($this->auth_methods[$method])) { return PEAR::raiseError("$method is not a supported authentication method"); } if (!is_callable($this->auth_methods[$method], false)) { return PEAR::raiseError("$method authentication method cannot be called"); } if (is_array($this->auth_methods[$method])) { list($object, $method) = $this->auth_methods[$method]; $result = $object->{$method}($uid, $pwd, $authz, $this); } else { $func = $this->auth_methods[$method]; $result = $func($uid, $pwd, $authz, $this); } /* If an error was encountered, return the PEAR_Error object. */ if (PEAR::isError($result)) { return $result; } return true; } /** * Add a new authentication method. * * @param string $name The authentication method name (e.g. 'PLAIN') * @param mixed $callback The authentication callback (given as the name of a * function or as an (object, method name) array). * @param bool $prepend Should the new method be prepended to the list of * available methods? This is the default behavior, * giving the new method the highest priority. * * @return mixed True on success or a PEAR_Error object on failure. * * @since 1.6.0 */ public function setAuthMethod($name, $callback, $prepend = true) { if (!is_string($name)) { return PEAR::raiseError('Method name is not a string'); } if (!is_string($callback) && !is_array($callback)) { return PEAR::raiseError('Method callback must be string or array'); } if (is_array($callback)) { if (!is_object($callback[0]) || !is_string($callback[1])) { return PEAR::raiseError('Bad mMethod callback array'); } } if ($prepend) { $this->auth_methods = array_merge( array($name => $callback), $this->auth_methods ); } else { $this->auth_methods[$name] = $callback; } return true; } /** * Authenticates the user using the DIGEST-MD5 method. * * @param string $uid The userid to authenticate as. * @param string $pwd The password to authenticate with. * @param string $authz The optional authorization proxy identifier. * * @return mixed Returns a PEAR_Error with an error message on any * kind of failure, or true on success. * @since 1.1.0 */ protected function authDigestMD5($uid, $pwd, $authz = '') { if (PEAR::isError($error = $this->put('AUTH', 'DIGEST-MD5'))) { return $error; } /* 334: Continue authentication request */ if (PEAR::isError($error = $this->parseResponse(334))) { /* 503: Error: already authenticated */ if ($this->code === 503) { return true; } return $error; } $auth_sasl = new Auth_SASL; $digest = $auth_sasl->factory('digest-md5'); $challenge = base64_decode($this->arguments[0]); $auth_str = base64_encode( $digest->getResponse($uid, $pwd, $challenge, $this->host, "smtp", $authz) ); if (PEAR::isError($error = $this->put($auth_str))) { return $error; } /* 334: Continue authentication request */ if (PEAR::isError($error = $this->parseResponse(334))) { return $error; } /* We don't use the protocol's third step because SMTP doesn't * allow subsequent authentication, so we just silently ignore * it. */ if (PEAR::isError($error = $this->put(''))) { return $error; } /* 235: Authentication successful */ if (PEAR::isError($error = $this->parseResponse(235))) { return $error; } } /** * Authenticates the user using the CRAM-MD5 method. * * @param string $uid The userid to authenticate as. * @param string $pwd The password to authenticate with. * @param string $authz The optional authorization proxy identifier. * * @return mixed Returns a PEAR_Error with an error message on any * kind of failure, or true on success. * @since 1.1.0 */ protected function authCRAMMD5($uid, $pwd, $authz = '') { if (PEAR::isError($error = $this->put('AUTH', 'CRAM-MD5'))) { return $error; } /* 334: Continue authentication request */ if (PEAR::isError($error = $this->parseResponse(334))) { /* 503: Error: already authenticated */ if ($this->code === 503) { return true; } return $error; } $auth_sasl = new Auth_SASL; $challenge = base64_decode($this->arguments[0]); $cram = $auth_sasl->factory('cram-md5'); $auth_str = base64_encode($cram->getResponse($uid, $pwd, $challenge)); if (PEAR::isError($error = $this->put($auth_str))) { return $error; } /* 235: Authentication successful */ if (PEAR::isError($error = $this->parseResponse(235))) { return $error; } } /** * Authenticates the user using the LOGIN method. * * @param string $uid The userid to authenticate as. * @param string $pwd The password to authenticate with. * @param string $authz The optional authorization proxy identifier. * * @return mixed Returns a PEAR_Error with an error message on any * kind of failure, or true on success. * @since 1.1.0 */ protected function authLogin($uid, $pwd, $authz = '') { if (PEAR::isError($error = $this->put('AUTH', 'LOGIN'))) { return $error; } /* 334: Continue authentication request */ if (PEAR::isError($error = $this->parseResponse(334))) { /* 503: Error: already authenticated */ if ($this->code === 503) { return true; } return $error; } if (PEAR::isError($error = $this->put(base64_encode($uid)))) { return $error; } /* 334: Continue authentication request */ if (PEAR::isError($error = $this->parseResponse(334))) { return $error; } if (PEAR::isError($error = $this->put(base64_encode($pwd)))) { return $error; } /* 235: Authentication successful */ if (PEAR::isError($error = $this->parseResponse(235))) { return $error; } return true; } /** * Authenticates the user using the PLAIN method. * * @param string $uid The userid to authenticate as. * @param string $pwd The password to authenticate with. * @param string $authz The optional authorization proxy identifier. * * @return mixed Returns a PEAR_Error with an error message on any * kind of failure, or true on success. * @since 1.1.0 */ protected function authPlain($uid, $pwd, $authz = '') { if (PEAR::isError($error = $this->put('AUTH', 'PLAIN'))) { return $error; } /* 334: Continue authentication request */ if (PEAR::isError($error = $this->parseResponse(334))) { /* 503: Error: already authenticated */ if ($this->code === 503) { return true; } return $error; } $auth_str = base64_encode($authz . chr(0) . $uid . chr(0) . $pwd); if (PEAR::isError($error = $this->put($auth_str))) { return $error; } /* 235: Authentication successful */ if (PEAR::isError($error = $this->parseResponse(235))) { return $error; } return true; } /** * Send the HELO command. * * @param string $domain The domain name to say we are. * * @return mixed Returns a PEAR_Error with an error message on any * kind of failure, or true on success. * @since 1.0 */ public function helo($domain) { if (PEAR::isError($error = $this->put('HELO', $domain))) { return $error; } if (PEAR::isError($error = $this->parseResponse(250))) { return $error; } return true; } /** * Return the list of SMTP service extensions advertised by the server. * * @return array The list of SMTP service extensions. * @since 1.3 */ public function getServiceExtensions() { return $this->esmtp; } /** * Send the MAIL FROM: command. * * @param string $sender The sender (reverse path) to set. * @param string $params String containing additional MAIL parameters, * such as the NOTIFY flags defined by RFC 1891 * or the VERP protocol. * * If $params is an array, only the 'verp' option * is supported. If 'verp' is true, the XVERP * parameter is appended to the MAIL command. * If the 'verp' value is a string, the full * XVERP=value parameter is appended. * * @return mixed Returns a PEAR_Error with an error message on any * kind of failure, or true on success. * @since 1.0 */ public function mailFrom($sender, $params = null) { $args = "FROM:<$sender>"; /* Support the deprecated array form of $params. */ if (is_array($params) && isset($params['verp'])) { if ($params['verp'] === true) { $args .= ' XVERP'; } elseif (trim($params['verp'])) { $args .= ' XVERP=' . $params['verp']; } } elseif (is_string($params) && !empty($params)) { $args .= ' ' . $params; } if (PEAR::isError($error = $this->put('MAIL', $args))) { return $error; } if (PEAR::isError($error = $this->parseResponse(250, $this->pipelining))) { return $error; } return true; } /** * Send the RCPT TO: command. * * @param string $recipient The recipient (forward path) to add. * @param string $params String containing additional RCPT parameters, * such as the NOTIFY flags defined by RFC 1891. * * @return mixed Returns a PEAR_Error with an error message on any * kind of failure, or true on success. * * @since 1.0 */ public function rcptTo($recipient, $params = null) { $args = "TO:<$recipient>"; if (is_string($params)) { $args .= ' ' . $params; } if (PEAR::isError($error = $this->put('RCPT', $args))) { return $error; } if (PEAR::isError($error = $this->parseResponse(array(250, 251), $this->pipelining))) { return $error; } return true; } /** * Quote the data so that it meets SMTP standards. * * This is provided as a separate public function to facilitate * easier overloading for the cases where it is desirable to * customize the quoting behavior. * * @param string &$data The message text to quote. The string must be passed * by reference, and the text will be modified in place. * * @since 1.2 */ public function quotedata(&$data) { /* Because a single leading period (.) signifies an end to the * data, legitimate leading periods need to be "doubled" ('..'). */ $data = preg_replace('/^\./m', '..', $data); /* Change Unix (\n) and Mac (\r) linefeeds into CRLF's (\r\n). */ $data = preg_replace('/(?:\r\n|\n|\r(?!\n))/', "\r\n", $data); } /** * Send the DATA command. * * @param mixed $data The message data, either as a string or an open * file resource. * @param string $headers The message headers. If $headers is provided, * $data is assumed to contain only body data. * * @return mixed Returns a PEAR_Error with an error message on any * kind of failure, or true on success. * @since 1.0 */ public function data($data, $headers = null) { /* Verify that $data is a supported type. */ if (!is_string($data) && !is_resource($data)) { return PEAR::raiseError('Expected a string or file resource'); } /* Start by considering the size of the optional headers string. We * also account for the addition 4 character "\r\n\r\n" separator * sequence. */ $size = $headers_size = (is_null($headers)) ? 0 : strlen($headers) + 4; if (is_resource($data)) { $stat = fstat($data); if ($stat === false) { return PEAR::raiseError('Failed to get file size'); } $size += $stat['size']; } else { $size += strlen($data); } /* RFC 1870, section 3, subsection 3 states "a value of zero indicates * that no fixed maximum message size is in force". Furthermore, it * says that if "the parameter is omitted no information is conveyed * about the server's fixed maximum message size". */ $limit = (isset($this->esmtp['SIZE'])) ? $this->esmtp['SIZE'] : 0; if ($limit > 0 && $size >= $limit) { $this->disconnect(); return PEAR::raiseError('Message size exceeds server limit'); } /* Initiate the DATA command. */ if (PEAR::isError($error = $this->put('DATA'))) { return $error; } if (PEAR::isError($error = $this->parseResponse(354))) { return $error; } /* If we have a separate headers string, send it first. */ if (!is_null($headers)) { $this->quotedata($headers); if (PEAR::isError($result = $this->send($headers . "\r\n\r\n"))) { return $result; } /* Subtract the headers size now that they've been sent. */ $size -= $headers_size; } /* Now we can send the message body data. */ if (is_resource($data)) { /* Stream the contents of the file resource out over our socket * connection, line by line. Each line must be run through the * quoting routine. */ while (strlen($line = fread($data, 8192)) > 0) { /* If the last character is an newline, we need to grab the * next character to check to see if it is a period. */ while (!feof($data)) { $char = fread($data, 1); $line .= $char; if ($char != "\n") { break; } } $this->quotedata($line); if (PEAR::isError($result = $this->send($line))) { return $result; } } $last = $line; } else { /* * Break up the data by sending one chunk (up to 512k) at a time. * This approach reduces our peak memory usage. */ for ($offset = 0; $offset < $size;) { $end = $offset + 512000; /* * Ensure we don't read beyond our data size or span multiple * lines. quotedata() can't properly handle character data * that's split across two line break boundaries. */ if ($end >= $size) { $end = $size; } else { for (; $end < $size; $end++) { if ($data[$end] != "\n") { break; } } } /* Extract our chunk and run it through the quoting routine. */ $chunk = substr($data, $offset, $end - $offset); $this->quotedata($chunk); /* If we run into a problem along the way, abort. */ if (PEAR::isError($result = $this->send($chunk))) { return $result; } /* Advance the offset to the end of this chunk. */ $offset = $end; } $last = $chunk; } /* Don't add another CRLF sequence if it's already in the data */ $terminator = (substr($last, -2) == "\r\n" ? '' : "\r\n") . ".\r\n"; /* Finally, send the DATA terminator sequence. */ if (PEAR::isError($result = $this->send($terminator))) { return $result; } /* Verify that the data was successfully received by the server. */ if (PEAR::isError($error = $this->parseResponse(250, $this->pipelining))) { return $error; } return true; } /** * Send the SEND FROM: command. * * @param string $path The reverse path to send. * * @return mixed Returns a PEAR_Error with an error message on any * kind of failure, or true on success. * @since 1.2.6 */ public function sendFrom($path) { if (PEAR::isError($error = $this->put('SEND', "FROM:<$path>"))) { return $error; } if (PEAR::isError($error = $this->parseResponse(250, $this->pipelining))) { return $error; } return true; } /** * Send the SOML FROM: command. * * @param string $path The reverse path to send. * * @return mixed Returns a PEAR_Error with an error message on any * kind of failure, or true on success. * @since 1.2.6 */ public function somlFrom($path) { if (PEAR::isError($error = $this->put('SOML', "FROM:<$path>"))) { return $error; } if (PEAR::isError($error = $this->parseResponse(250, $this->pipelining))) { return $error; } return true; } /** * Send the SAML FROM: command. * * @param string $path The reverse path to send. * * @return mixed Returns a PEAR_Error with an error message on any * kind of failure, or true on success. * @since 1.2.6 */ public function samlFrom($path) { if (PEAR::isError($error = $this->put('SAML', "FROM:<$path>"))) { return $error; } if (PEAR::isError($error = $this->parseResponse(250, $this->pipelining))) { return $error; } return true; } /** * Send the RSET command. * * @return mixed Returns a PEAR_Error with an error message on any * kind of failure, or true on success. * @since 1.0 */ public function rset() { if (PEAR::isError($error = $this->put('RSET'))) { return $error; } if (PEAR::isError($error = $this->parseResponse(250, $this->pipelining))) { return $error; } return true; } /** * Send the VRFY command. * * @param string $string The string to verify * * @return mixed Returns a PEAR_Error with an error message on any * kind of failure, or true on success. * @since 1.0 */ public function vrfy($string) { /* Note: 251 is also a valid response code */ if (PEAR::isError($error = $this->put('VRFY', $string))) { return $error; } if (PEAR::isError($error = $this->parseResponse(array(250, 252)))) { return $error; } return true; } /** * Send the NOOP command. * * @return mixed Returns a PEAR_Error with an error message on any * kind of failure, or true on success. * @since 1.0 */ public function noop() { if (PEAR::isError($error = $this->put('NOOP'))) { return $error; } if (PEAR::isError($error = $this->parseResponse(250))) { return $error; } return true; } /** * Backwards-compatibility method. identifySender()'s functionality is * now handled internally. * * @return boolean This method always return true. * * @since 1.0 */ public function identifySender() { return true; } }