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- <?php
- require_once 'PEAR.php';
- require_once 'Net/Socket.php';
- class Net_SMTP
- {
-
- public $host = 'localhost';
-
- public $port = 25;
-
- public $localhost = 'localhost';
-
- public $auth_methods = array();
-
- public $pipelining = false;
-
- protected $pipelined_commands = 0;
-
- protected $debug = false;
-
- protected $debug_handler = null;
-
- protected $socket = null;
-
- protected $socket_options = null;
-
- protected $timeout = 0;
-
- protected $code = -1;
-
- protected $arguments = array();
-
- protected $greeting = null;
-
- protected $esmtp = array();
-
- public function __construct($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;
-
- if (@include_once 'Auth/SASL.php') {
- $this->setAuthMethod('CRAM-MD5', array($this, 'authCramMD5'));
- $this->setAuthMethod('DIGEST-MD5', array($this, 'authDigestMD5'));
- }
-
- $this->setAuthMethod('LOGIN', array($this, 'authLogin'), false);
- $this->setAuthMethod('PLAIN', array($this, 'authPlain'), false);
- }
-
- public function setTimeout($seconds, $microseconds = 0)
- {
- return $this->socket->setTimeout($seconds, $microseconds);
- }
-
- public function setDebug($debug, $handler = null)
- {
- $this->debug = $debug;
- $this->debug_handler = $handler;
- }
-
- protected function debug($message)
- {
- if ($this->debug) {
- if ($this->debug_handler) {
- call_user_func_array(
- $this->debug_handler, array(&$this, $message)
- );
- } else {
- echo "DEBUG: $message\n";
- }
- }
- }
-
- protected function send($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 $result;
- }
-
- protected function put($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");
- }
-
- 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: $line");
-
- if (empty($line)) {
- $this->disconnect();
- return PEAR::raiseError('Connection was closed');
- }
-
- $code = substr($line, 0, 3);
- $this->arguments[] = trim(substr($line, 4));
-
- if (is_numeric($code)) {
- $this->code = (int)$code;
- } else {
- $this->code = -1;
- break;
- }
-
- if (substr($line, 3, 1) != '-') {
- break;
- }
- }
- }
- $this->pipelined_commands = 0;
-
- if (is_int($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', $this->code);
- }
-
- public function command($command, $valid)
- {
- if (PEAR::isError($error = $this->put($command))) {
- return $error;
- }
- if (PEAR::isError($error = $this->parseResponse($valid))) {
- return $error;
- }
- return true;
- }
-
- public function getResponse()
- {
- return array($this->code, join("\n", $this->arguments));
- }
-
- public function getGreeting()
- {
- return $this->greeting;
- }
-
- public function connect($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: ' . $result->getMessage()
- );
- }
-
- if ($this->timeout > 0) {
- if (PEAR::isError($error = $this->setTimeout($this->timeout))) {
- return $error;
- }
- }
- if (PEAR::isError($error = $this->parseResponse(220))) {
- return $error;
- }
-
- list(, $this->greeting) = $this->getResponse();
- if (PEAR::isError($error = $this->negotiate())) {
- return $error;
- }
- return true;
- }
-
- public function disconnect()
- {
- if (PEAR::isError($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: ' . $error->getMessage()
- );
- }
- return true;
- }
-
- protected function negotiate()
- {
- if (PEAR::isError($error = $this->put('EHLO', $this->localhost))) {
- return $error;
- }
- if (PEAR::isError($this->parseResponse(250))) {
-
- 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;
- }
-
- protected function getBestAuthMethod()
- {
- $available_methods = explode(' ', $this->esmtp['AUTH']);
- foreach ($this->auth_methods as $method => $callback) {
- if (in_array($method, $available_methods)) {
- return $method;
- }
- }
- return PEAR::raiseError('No supported authentication methods');
- }
-
- public function auth($uid, $pwd , $method = '', $tls = true, $authz = '')
- {
-
- if ($tls && version_compare(PHP_VERSION, '5.1.0', '>=')
- && extension_loaded('openssl') && isset($this->esmtp['STARTTLS'])
- && strncasecmp($this->host, 'ssl://', 6) !== 0
- ) {
-
- 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 {
-
- $crypto_method = STREAM_CRYPTO_METHOD_TLS_CLIENT
- | @STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT
- | @STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT;
- }
- if (PEAR::isError($result = $this->socket->enableCrypto(true, $crypto_method))) {
- return $result;
- } elseif ($result !== true) {
- return PEAR::raiseError('STARTTLS failed');
- }
-
- $this->negotiate();
- }
- if (empty($this->esmtp['AUTH'])) {
- return PEAR::raiseError('SMTP server does not support authentication');
- }
-
- if (empty($method)) {
- if (PEAR::isError($method = $this->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, $this);
- }
-
- if (PEAR::isError($result)) {
- return $result;
- }
- return true;
- }
-
- public function setAuthMethod($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] = $callback;
- }
- return true;
- }
-
- protected function authDigestMD5($uid, $pwd, $authz = '')
- {
- if (PEAR::isError($error = $this->put('AUTH', 'DIGEST-MD5'))) {
- return $error;
- }
-
- if (PEAR::isError($error = $this->parseResponse(334))) {
-
- if ($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 $error;
- }
-
- if (PEAR::isError($error = $this->parseResponse(334))) {
- return $error;
- }
-
- if (PEAR::isError($error = $this->put(''))) {
- return $error;
- }
-
- if (PEAR::isError($error = $this->parseResponse(235))) {
- return $error;
- }
- }
-
- protected function authCRAMMD5($uid, $pwd, $authz = '')
- {
- if (PEAR::isError($error = $this->put('AUTH', 'CRAM-MD5'))) {
- return $error;
- }
-
- if (PEAR::isError($error = $this->parseResponse(334))) {
-
- if ($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 $error;
- }
-
- if (PEAR::isError($error = $this->parseResponse(235))) {
- return $error;
- }
- }
-
- protected function authLogin($uid, $pwd, $authz = '')
- {
- if (PEAR::isError($error = $this->put('AUTH', 'LOGIN'))) {
- return $error;
- }
-
- if (PEAR::isError($error = $this->parseResponse(334))) {
-
- if ($this->code === 503) {
- return true;
- }
- return $error;
- }
- if (PEAR::isError($error = $this->put(base64_encode($uid)))) {
- return $error;
- }
-
- if (PEAR::isError($error = $this->parseResponse(334))) {
- return $error;
- }
- if (PEAR::isError($error = $this->put(base64_encode($pwd)))) {
- return $error;
- }
-
- if (PEAR::isError($error = $this->parseResponse(235))) {
- return $error;
- }
- return true;
- }
-
- protected function authPlain($uid, $pwd, $authz = '')
- {
- if (PEAR::isError($error = $this->put('AUTH', 'PLAIN'))) {
- return $error;
- }
-
- if (PEAR::isError($error = $this->parseResponse(334))) {
-
- if ($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 $error;
- }
-
- if (PEAR::isError($error = $this->parseResponse(235))) {
- return $error;
- }
- return true;
- }
-
- public function helo($domain)
- {
- if (PEAR::isError($error = $this->put('HELO', $domain))) {
- return $error;
- }
- if (PEAR::isError($error = $this->parseResponse(250))) {
- return $error;
- }
- return true;
- }
-
- public function getServiceExtensions()
- {
- return $this->esmtp;
- }
-
- public function mailFrom($sender, $params = null)
- {
- $args = "FROM:<$sender>";
-
- 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 $error;
- }
- return true;
- }
-
- public function rcptTo($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 $error;
- }
- return true;
- }
-
- public function quotedata(&$data)
- {
-
- $data = preg_replace('/^\./m', '..', $data);
-
- $data = preg_replace('/(?:\r\n|\n|\r(?!\n))/', "\r\n", $data);
- }
-
- public function data($data, $headers = null)
- {
-
- if (!is_string($data) && !is_resource($data)) {
- return PEAR::raiseError('Expected a string or file resource');
- }
-
- $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);
- }
-
- $limit = (isset($this->esmtp['SIZE'])) ? $this->esmtp['SIZE'] : 0;
- if ($limit > 0 && $size >= $limit) {
- $this->disconnect();
- return PEAR::raiseError('Message size exceeds server limit');
- }
-
- if (PEAR::isError($error = $this->put('DATA'))) {
- return $error;
- }
- if (PEAR::isError($error = $this->parseResponse(354))) {
- return $error;
- }
-
- if (!is_null($headers)) {
- $this->quotedata($headers);
- if (PEAR::isError($result = $this->send($headers . "\r\n\r\n"))) {
- return $result;
- }
-
- $size -= $headers_size;
- }
-
- if (is_resource($data)) {
-
- while (strlen($line = fread($data, 8192)) > 0) {
-
- 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 = $line;
- } else {
-
- for ($offset = 0; $offset < $size;) {
- $end = $offset + 512000;
-
- if ($end >= $size) {
- $end = $size;
- } else {
- for (; $end < $size; $end++) {
- if ($data[$end] != "\n") {
- break;
- }
- }
- }
-
- $chunk = substr($data, $offset, $end - $offset);
- $this->quotedata($chunk);
-
- if (PEAR::isError($result = $this->send($chunk))) {
- return $result;
- }
-
- $offset = $end;
- }
- $last = $chunk;
- }
-
- $terminator = (substr($last, -2) == "\r\n" ? '' : "\r\n") . ".\r\n";
-
- if (PEAR::isError($result = $this->send($terminator))) {
- return $result;
- }
-
- if (PEAR::isError($error = $this->parseResponse(250, $this->pipelining))) {
- return $error;
- }
- return true;
- }
-
- public function sendFrom($path)
- {
- if (PEAR::isError($error = $this->put('SEND', "FROM:<$path>"))) {
- return $error;
- }
- if (PEAR::isError($error = $this->parseResponse(250, $this->pipelining))) {
- return $error;
- }
- return true;
- }
-
- public function somlFrom($path)
- {
- if (PEAR::isError($error = $this->put('SOML', "FROM:<$path>"))) {
- return $error;
- }
- if (PEAR::isError($error = $this->parseResponse(250, $this->pipelining))) {
- return $error;
- }
- return true;
- }
-
- public function samlFrom($path)
- {
- if (PEAR::isError($error = $this->put('SAML', "FROM:<$path>"))) {
- return $error;
- }
- if (PEAR::isError($error = $this->parseResponse(250, $this->pipelining))) {
- return $error;
- }
- return true;
- }
-
- public function rset()
- {
- if (PEAR::isError($error = $this->put('RSET'))) {
- return $error;
- }
- if (PEAR::isError($error = $this->parseResponse(250, $this->pipelining))) {
- return $error;
- }
- return true;
- }
-
- public function vrfy($string)
- {
-
- if (PEAR::isError($error = $this->put('VRFY', $string))) {
- return $error;
- }
- if (PEAR::isError($error = $this->parseResponse(array(250, 252)))) {
- return $error;
- }
- return true;
- }
-
- public function noop()
- {
- if (PEAR::isError($error = $this->put('NOOP'))) {
- return $error;
- }
- if (PEAR::isError($error = $this->parseResponse(250))) {
- return $error;
- }
- return true;
- }
-
- public function identifySender()
- {
- return true;
- }
- }
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