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Konstantin
@@ -0,0 +1,247 @@
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<?php
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namespace Mail;
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class Smtp {
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public $smtp_hostname;
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public $smtp_username;
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public $smtp_password;
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public $smtp_port = 25;
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public $smtp_timeout = 5;
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public $max_attempts = 3;
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public $verp = false;
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public function send() {
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if (is_array($this->to)) {
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$to = implode(',', $this->to);
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} else {
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$to = $this->to;
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}
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$boundary = '----=_NextPart_' . md5(time());
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$header = 'MIME-Version: 1.0' . PHP_EOL;
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$header .= 'To: <' . $to . '>' . PHP_EOL;
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$header .= 'Subject: =?UTF-8?B?' . base64_encode($this->subject) . '?=' . PHP_EOL;
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$header .= 'Date: ' . date('D, d M Y H:i:s O') . PHP_EOL;
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$header .= 'From: =?UTF-8?B?' . base64_encode($this->sender) . '?= <' . $this->from . '>' . PHP_EOL;
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if (!$this->reply_to) {
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$header .= 'Reply-To: =?UTF-8?B?' . base64_encode($this->sender) . '?= <' . $this->from . '>' . PHP_EOL;
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} else {
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$header .= 'Reply-To: =?UTF-8?B?' . base64_encode($this->reply_to) . '?= <' . $this->reply_to . '>' . PHP_EOL;
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}
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$header .= 'Return-Path: ' . $this->from . PHP_EOL;
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$header .= 'X-Mailer: PHP/' . phpversion() . PHP_EOL;
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$header .= 'Content-Type: multipart/mixed; boundary="' . $boundary . '"' . PHP_EOL . PHP_EOL;
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if (!$this->html) {
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$message = '--' . $boundary . PHP_EOL;
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$message .= 'Content-Type: text/plain; charset="utf-8"' . PHP_EOL;
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$message .= 'Content-Transfer-Encoding: 8bit' . PHP_EOL . PHP_EOL;
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$message .= $this->text . PHP_EOL;
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} else {
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$message = '--' . $boundary . PHP_EOL;
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$message .= 'Content-Type: multipart/alternative; boundary="' . $boundary . '_alt"' . PHP_EOL . PHP_EOL;
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$message .= '--' . $boundary . '_alt' . PHP_EOL;
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$message .= 'Content-Type: text/plain; charset="utf-8"' . PHP_EOL;
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$message .= 'Content-Transfer-Encoding: 8bit' . PHP_EOL . PHP_EOL;
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if ($this->text) {
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$message .= $this->text . PHP_EOL;
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} else {
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$message .= 'This is a HTML email and your email client software does not support HTML email!' . PHP_EOL;
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}
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$message .= '--' . $boundary . '_alt' . PHP_EOL;
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$message .= 'Content-Type: text/html; charset="utf-8"' . PHP_EOL;
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$message .= 'Content-Transfer-Encoding: 8bit' . PHP_EOL . PHP_EOL;
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$message .= $this->html . PHP_EOL;
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$message .= '--' . $boundary . '_alt--' . PHP_EOL;
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}
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foreach ($this->attachments as $attachment) {
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if (file_exists($attachment)) {
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$handle = fopen($attachment, 'r');
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$content = fread($handle, filesize($attachment));
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fclose($handle);
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$message .= '--' . $boundary . PHP_EOL;
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$message .= 'Content-Type: application/octet-stream; name="' . basename($attachment) . '"' . PHP_EOL;
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$message .= 'Content-Transfer-Encoding: base64' . PHP_EOL;
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$message .= 'Content-Disposition: attachment; filename="' . basename($attachment) . '"' . PHP_EOL;
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$message .= 'Content-ID: <' . urlencode(basename($attachment)) . '>' . PHP_EOL;
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$message .= 'X-Attachment-Id: ' . urlencode(basename($attachment)) . PHP_EOL . PHP_EOL;
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$message .= chunk_split(base64_encode($content));
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}
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}
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$message .= '--' . $boundary . '--' . PHP_EOL;
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if (substr($this->smtp_hostname, 0, 3) == 'tls') {
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$hostname = substr($this->smtp_hostname, 6);
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} else {
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$hostname = $this->smtp_hostname;
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}
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$handle = fsockopen($hostname, $this->smtp_port, $errno, $errstr, $this->smtp_timeout);
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if (!$handle) {
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throw new \Exception('Error: ' . $errstr . ' (' . $errno . ')');
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} else {
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if (substr(PHP_OS, 0, 3) != 'WIN') {
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socket_set_timeout($handle, $this->smtp_timeout, 0);
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}
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while ($line = fgets($handle, 515)) {
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if (substr($line, 3, 1) == ' ') {
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break;
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}
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}
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fputs($handle, 'EHLO ' . getenv('SERVER_NAME') . "\r\n");
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$reply = '';
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while ($line = fgets($handle, 515)) {
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$reply .= $line;
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//some SMTP servers respond with 220 code before responding with 250. hence, we need to ignore 220 response string
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if (substr($reply, 0, 3) == 220 && substr($line, 3, 1) == ' ') {
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$reply = '';
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continue;
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} else if (substr($line, 3, 1) == ' ') {
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break;
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}
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}
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if (substr($reply, 0, 3) != 250) {
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throw new \Exception('Error: EHLO not accepted from server!');
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}
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if (substr($this->smtp_hostname, 0, 3) == 'tls') {
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fputs($handle, 'STARTTLS' . "\r\n");
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$this->handleReply($handle, 220, 'Error: STARTTLS not accepted from server!');
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stream_socket_enable_crypto($handle, true, STREAM_CRYPTO_METHOD_TLS_CLIENT);
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}
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if (!empty($this->smtp_username) && !empty($this->smtp_password)) {
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fputs($handle, 'EHLO ' . getenv('SERVER_NAME') . "\r\n");
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$this->handleReply($handle, 250, 'Error: EHLO not accepted from server!');
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fputs($handle, 'AUTH LOGIN' . "\r\n");
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$this->handleReply($handle, 334, 'Error: AUTH LOGIN not accepted from server!');
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fputs($handle, base64_encode($this->smtp_username) . "\r\n");
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$this->handleReply($handle, 334, 'Error: Username not accepted from server!');
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fputs($handle, base64_encode($this->smtp_password) . "\r\n");
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$this->handleReply($handle, 235, 'Error: Password not accepted from server!');
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} else {
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fputs($handle, 'HELO ' . getenv('SERVER_NAME') . "\r\n");
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$this->handleReply($handle, 250, 'Error: HELO not accepted from server!');
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}
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if ($this->verp) {
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fputs($handle, 'MAIL FROM: <' . $this->smtp_username . '>XVERP' . "\r\n");
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} else {
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fputs($handle, 'MAIL FROM: <' . $this->smtp_username . '>' . "\r\n");
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}
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$this->handleReply($handle, 250, 'Error: MAIL FROM not accepted from server!');
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if (!is_array($this->to)) {
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fputs($handle, 'RCPT TO: <' . $this->to . '>' . "\r\n");
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$reply = $this->handleReply($handle, false, 'RCPT TO [!array]');
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if ((substr($reply, 0, 3) != 250) && (substr($reply, 0, 3) != 251)) {
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throw new \Exception('Error: RCPT TO not accepted from server!');
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}
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} else {
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foreach ($this->to as $recipient) {
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fputs($handle, 'RCPT TO: <' . $recipient . '>' . "\r\n");
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$reply = $this->handleReply($handle, false, 'RCPT TO [array]');
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if ((substr($reply, 0, 3) != 250) && (substr($reply, 0, 3) != 251)) {
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throw new \Exception('Error: RCPT TO not accepted from server!');
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}
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}
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}
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fputs($handle, 'DATA' . "\r\n");
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$this->handleReply($handle, 354, 'Error: DATA not accepted from server!');
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// According to rfc 821 we should not send more than 1000 including the CRLF
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$message = str_replace("\r\n", "\n", $header . $message);
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$message = str_replace("\r", "\n", $message);
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$length = (mb_detect_encoding($message, mb_detect_order(), true) == 'ASCII') ? 998 : 249;
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$lines = explode("\n", $message);
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foreach ($lines as $line) {
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$results = str_split($line, $length);
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foreach ($results as $result) {
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if (substr(PHP_OS, 0, 3) != 'WIN') {
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fputs($handle, $result . "\r\n");
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} else {
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fputs($handle, str_replace("\n", "\r\n", $result) . "\r\n");
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}
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}
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}
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fputs($handle, '.' . "\r\n");
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$this->handleReply($handle, 250, 'Error: DATA not accepted from server!');
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fputs($handle, 'QUIT' . "\r\n");
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$this->handleReply($handle, 221, 'Error: QUIT not accepted from server!');
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fclose($handle);
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}
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}
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private function handleReply($handle, $status_code = false, $error_text = false, $counter = 0) {
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$reply = '';
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while (($line = fgets($handle, 515)) !== false) {
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$reply .= $line;
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if (substr($line, 3, 1) == ' ') {
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break;
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}
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}
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// Handle slowish server responses (generally due to policy servers)
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if (!$line && empty($reply) && $counter < $this->max_attempts) {
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sleep(1);
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$counter++;
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return $this->handleReply($handle, $status_code, $error_text, $counter);
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}
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if ($status_code) {
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if (substr($reply, 0, 3) != $status_code) {
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throw new \Exception($error_text);
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}
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}
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return $reply;
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}
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}
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