/**
* Connects to the smtp-server
*/
protected function connect()
{
// connect
$this->connection = new RemoteFile(MAIL_SMTP_HOST, MAIL_SMTP_PORT);
$this->getSMTPStatus();
if ($this->statusCode != 220) {
throw new SystemException($this->formatError("can not connect to '" . MAIL_SMTP_HOST . ":" . MAIL_SMTP_PORT . "'"));
}
$host = isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : '';
if (empty($host)) {
$host = gethostname();
if ($host === false) {
$host = 'localhost';
}
}
// send ehlo
$this->write('EHLO ' . $host);
$extensions = explode(Mail::$lineEnding, $this->read());
$this->getSMTPStatus(array_shift($extensions));
if ($this->statusCode == 250) {
$extensions = array_map(function ($element) {
return strtolower(substr($element, 4));
}, $extensions);
if ($this->connection->hasTLSSupport() && in_array('starttls', $extensions)) {
$this->write('STARTTLS');
$this->getSMTPStatus();
if ($this->statusCode != 220) {
throw new SystemException($this->formatError("cannot enable STARTTLS, though '" . MAIL_SMTP_HOST . ":" . MAIL_SMTP_PORT . "' advertised it"));
}
if (!$this->connection->setTLS(true)) {
throw new SystemException('enabling TLS failed');
}
// repeat EHLO
$this->write('EHLO ' . $host);
$extensions = explode(Mail::$lineEnding, $this->read());
$this->getSMTPStatus(array_shift($extensions));
if ($this->statusCode != 250) {
throw new SystemException($this->formatError("could not EHLO after enabling STARTTLS at '" . MAIL_SMTP_HOST . ":" . MAIL_SMTP_PORT . "'"));
}
}
// do authentication
if (MAIL_SMTP_USER != '' || MAIL_SMTP_PASSWORD != '') {
$this->auth();
}
} else {
// send helo
$this->write('HELO ' . $host);
$this->getSMTPStatus();
if ($this->statusCode != 250) {
throw new SystemException($this->formatError("can not connect to '" . MAIL_SMTP_HOST . ":" . MAIL_SMTP_PORT . "'"));
}
}
}
/**
* Executes the HTTP request.
*/
public function execute()
{
// connect
$remoteFile = new RemoteFile(($this->useSSL ? 'ssl://' : '') . $this->host, $this->port, $this->options['timeout'], array('ssl' => array('peer_name' => $this->originHost)));
if ($this->originUseSSL && PROXY_SERVER_HTTP) {
if ($this->useSSL) {
throw new SystemException("Unable to proxy HTTPS when using TLS for proxy connection");
}
$request = "CONNECT " . $this->originHost . ":" . $this->originPort . " HTTP/1.0\r\n";
if (isset($this->headers['user-agent'])) {
$request .= 'user-agent: ' . reset($this->headers['user-agent']) . "\r\n";
}
$request .= "Host: " . $this->originHost . ":" . $this->originPort . "\r\n";
$request .= "\r\n";
$remoteFile->puts($request);
$this->replyHeaders = array();
while (!$remoteFile->eof()) {
$line = $remoteFile->gets();
if (rtrim($line) === '') {
$this->parseReplyHeaders();
break;
}
$this->replyHeaders[] = $line;
}
if ($this->statusCode != 200) {
throw new SystemException("Expected 200 Ok as reply to my CONNECT, got '" . $this->statusCode . "'");
}
$remoteFile->setTLS(true);
}
$request = $this->options['method'] . " " . $this->path . ($this->query ? '?' . $this->query : '') . " HTTP/1.1\r\n";
// add headers
foreach ($this->headers as $name => $values) {
foreach ($values as $value) {
$request .= $name . ": " . $value . "\r\n";
}
}
$request .= "\r\n";
// add post parameters
if ($this->options['method'] !== 'GET') {
$request .= $this->body . "\r\n\r\n";
}
$remoteFile->puts($request);
$inHeader = true;
$this->replyHeaders = array();
$this->replyBody = '';
$chunkLength = 0;
$bodyLength = 0;
$chunkedTransferRegex = new Regex('(^|,)[ \\t]*chunked[ \\t]*$', Regex::CASE_INSENSITIVE);
// read http response, until one of is true
// a) EOF is reached
// b) bodyLength is at least maxLength
// c) bodyLength is at least Content-Length
while (!($remoteFile->eof() || isset($this->options['maxLength']) && $bodyLength >= $this->options['maxLength'] || isset($this->replyHeaders['content-length']) && $bodyLength >= end($this->replyHeaders['content-length']))) {
if ($chunkLength) {
if (isset($this->options['maxLength'])) {
$chunkLength = min($chunkLength, $this->options['maxLength'] - $bodyLength);
}
$line = $remoteFile->read($chunkLength);
} else {
if (!$inHeader && (!isset($this->replyHeaders['transfer-encoding']) || !$chunkedTransferRegex->match(end($this->replyHeaders['transfer-encoding'])))) {
$length = 1024;
if (isset($this->options['maxLength'])) {
$length = min($length, $this->options['maxLength'] - $bodyLength);
}
if (isset($this->replyHeaders['content-length'])) {
$length = min($length, end($this->replyHeaders['content-length']) - $bodyLength);
}
$line = $remoteFile->read($length);
} else {
$line = $remoteFile->gets();
}
}
if ($inHeader) {
if (rtrim($line) === '') {
$inHeader = false;
$this->parseReplyHeaders();
continue;
}
$this->replyHeaders[] = $line;
} else {
if (isset($this->replyHeaders['transfer-encoding']) && $chunkedTransferRegex->match(end($this->replyHeaders['transfer-encoding']))) {
// last chunk finished
if ($chunkLength === 0) {
// read hex data and trash chunk-extension
list($hex) = explode(';', $line, 2);
$chunkLength = hexdec($hex);
// $chunkLength === 0 -> no more data
if ($chunkLength === 0) {
// clear remaining response
while (!$remoteFile->gets(1024)) {
}
// remove chunked from transfer-encoding
$this->replyHeaders['transfer-encoding'] = array_filter(array_map(function ($element) use($chunkedTransferRegex) {
return $chunkedTransferRegex->replace($element, '');
}, $this->replyHeaders['transfer-encoding']), 'trim');
if (empty($this->replyHeaders['transfer-encoding'])) {
unset($this->replyHeaders['transfer-encoding']);
}
// break out of main reading loop
break;
}
} else {
$this->replyBody .= $line;
$chunkLength -= strlen($line);
$bodyLength += strlen($line);
if ($chunkLength === 0) {
$remoteFile->read(2);
}
// CRLF
}
} else {
$this->replyBody .= $line;
$bodyLength += strlen($line);
}
}
}
if (isset($this->options['maxLength'])) {
$this->replyBody = substr($this->replyBody, 0, $this->options['maxLength']);
}
$remoteFile->close();
$this->parseReply();
}
