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