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+<?php
+
+/**
+ * @file
+ * Drupal core implementations of MailSystemInterface.
+ */
+
+/**
+ * The default Drupal mail backend using PHP's mail function.
+ */
+class DefaultMailSystem implements MailSystemInterface {
+ /**
+ * Concatenate and wrap the e-mail body for plain-text mails.
+ *
+ * @param $message
+ * A message array, as described in hook_mail_alter().
+ *
+ * @return
+ * The formatted $message.
+ */
+ public function format(array $message) {
+ // Join the body array into one string.
+ $message['body'] = implode("\n\n", $message['body']);
+ // Convert any HTML to plain-text.
+ $message['body'] = drupal_html_to_text($message['body']);
+ // Wrap the mail body for sending.
+ $message['body'] = drupal_wrap_mail($message['body']);
+ return $message;
+ }
+
+ /**
+ * Send an e-mail message, using Drupal variables and default settings.
+ *
+ * @see http://php.net/manual/function.mail.php
+ * @see drupal_mail()
+ *
+ * @param $message
+ * A message array, as described in hook_mail_alter().
+ * @return
+ * TRUE if the mail was successfully accepted, otherwise FALSE.
+ */
+ public function mail(array $message) {
+ // If 'Return-Path' isn't already set in php.ini, we pass it separately
+ // as an additional parameter instead of in the header.
+ // However, if PHP's 'safe_mode' is on, this is not allowed.
+ if (isset($message['headers']['Return-Path']) && !ini_get('safe_mode')) {
+ $return_path_set = strpos(ini_get('sendmail_path'), ' -f');
+ if (!$return_path_set) {
+ $message['Return-Path'] = $message['headers']['Return-Path'];
+ unset($message['headers']['Return-Path']);
+ }
+ }
+ $mimeheaders = array();
+ foreach ($message['headers'] as $name => $value) {
+ $mimeheaders[] = $name . ': ' . mime_header_encode($value);
+ }
+ $line_endings = variable_get('mail_line_endings', MAIL_LINE_ENDINGS);
+ // Prepare mail commands.
+ $mail_subject = mime_header_encode($message['subject']);
+ // Note: e-mail uses CRLF for line-endings. PHP's API requires LF
+ // on Unix and CRLF on Windows. Drupal automatically guesses the
+ // line-ending format appropriate for your system. If you need to
+ // override this, adjust $conf['mail_line_endings'] in settings.php.
+ $mail_body = preg_replace('@\r?\n@', $line_endings, $message['body']);
+ // For headers, PHP's API suggests that we use CRLF normally,
+ // but some MTAs incorrectly replace LF with CRLF. See #234403.
+ $mail_headers = join("\n", $mimeheaders);
+
+ // We suppress warnings and notices from mail() because of issues on some
+ // hosts. The return value of this method will still indicate whether mail
+ // was sent successfully.
+ if (!isset($_SERVER['WINDIR']) && strpos($_SERVER['SERVER_SOFTWARE'], 'Win32') === FALSE) {
+ if (isset($message['Return-Path']) && !ini_get('safe_mode')) {
+ // On most non-Windows systems, the "-f" option to the sendmail command
+ // is used to set the Return-Path. There is no space between -f and
+ // the value of the return path.
+ $mail_result = @mail(
+ $message['to'],
+ $mail_subject,
+ $mail_body,
+ $mail_headers,
+ '-f' . $message['Return-Path']
+ );
+ }
+ else {
+ // The optional $additional_parameters argument to mail() is not
+ // allowed if safe_mode is enabled. Passing any value throws a PHP
+ // warning and makes mail() return FALSE.
+ $mail_result = @mail(
+ $message['to'],
+ $mail_subject,
+ $mail_body,
+ $mail_headers
+ );
+ }
+ }
+ else {
+ // On Windows, PHP will use the value of sendmail_from for the
+ // Return-Path header.
+ $old_from = ini_get('sendmail_from');
+ ini_set('sendmail_from', $message['Return-Path']);
+ $mail_result = @mail(
+ $message['to'],
+ $mail_subject,
+ $mail_body,
+ $mail_headers
+ );
+ ini_set('sendmail_from', $old_from);
+ }
+ return $mail_result;
+ }
+}
+
+/**
+ * A mail sending implementation that captures sent messages to a variable.
+ *
+ * This class is for running tests or for development.
+ */
+class TestingMailSystem extends DefaultMailSystem implements MailSystemInterface {
+ /**
+ * Accept an e-mail message and store it in a variable.
+ *
+ * @param $message
+ * An e-mail message.
+ */
+ public function mail(array $message) {
+ $captured_emails = variable_get('drupal_test_email_collector', array());
+ $captured_emails[] = $message;
+ variable_set('drupal_test_email_collector', $captured_emails);
+ return TRUE;
+ }
+}
+