Migrate to SwiftMail

Replaces the OC_Mail and phpmailer with SwiftMail allowing us to mock it properly.

Fixes the unit test execution on master on local machines and https://github.com/owncloud/core/issues/12014

Conflicts:
	3rdparty
	lib/private/server.php
	lib/public/iservercontainer.php
	tests/lib/mail.php
	tests/settings/controller/mailsettingscontrollertest.php

Conflicts:
	3rdparty
	lib/private/mail.php
	lib/private/server.php
	lib/public/iservercontainer.php
	settings/ajax/lostpassword.php
	settings/application.php

2 files changed, 22 insertions, 21 deletions

diff --git a/settings/controller/mailsettingscontroller.php b/settings/controller/mailsettingscontroller.php
index 5874e644abb..43715b82237 100644
--- a/settings/controller/mailsettingscontroller.php
+++ b/settings/controller/mailsettingscontroller.php
@@ -16,6 +16,8 @@ use \OCP\AppFramework\Controller;
 use OCP\IRequest;
 use OCP\IL10N;
 use OCP\IConfig;
+use OCP\Mail\IMailer;
+use OCP\Mail\IMessage;
 
 /**
  * @package OC\Settings\Controller
@@ -30,8 +32,8 @@ class MailSettingsController extends Controller {
 	private $userSession;
 	/** @var \OC_Defaults */
 	private $defaults;
-	/** @var \OC_Mail */
-	private $mail;
+	/** @var IMailer */
+	private $mailer;
 	/** @var string */
 	private $defaultMailAddress;
 
@@ -42,7 +44,7 @@ class MailSettingsController extends Controller {
 	 * @param IConfig $config
 	 * @param Session $userSession
 	 * @param \OC_Defaults $defaults
-	 * @param \OC_Mail $mail
+	 * @param IMailer $mailer
 	 * @param string $defaultMailAddress
 	 */
 	public function __construct($appName,
@@ -51,14 +53,14 @@ class MailSettingsController extends Controller {
 								IConfig $config,
 								Session $userSession,
 								\OC_Defaults $defaults,
-								\OC_Mail $mail,
+								IMailer $mailer,
 								$defaultMailAddress) {
 		parent::__construct($appName, $request);
 		$this->l10n = $l10n;
 		$this->config = $config;
 		$this->userSession = $userSession;
 		$this->defaults = $defaults;
-		$this->mail = $mail;
+		$this->mailer = $mailer;
 		$this->defaultMailAddress = $defaultMailAddress;
 	}
 
diff --git a/settings/controller/userscontroller.php b/settings/controller/userscontroller.php
index a20cbb4050a..507e57ef940 100644
--- a/settings/controller/userscontroller.php
+++ b/settings/controller/userscontroller.php
@@ -26,6 +26,7 @@ use OCP\IURLGenerator;
 use OCP\IUser;
 use OCP\IUserManager;
 use OCP\IUserSession;
+use OCP\Mail\IMailer;
 
 /**
  * @package OC\Settings\Controller
@@ -47,8 +48,8 @@ class UsersController extends Controller {
 	private $log;
 	/** @var \OC_Defaults */
 	private $defaults;
-	/** @var \OC_Mail */
-	private $mail;
+	/** @var IMailer */
+	private $mailer;
 	/** @var string */
 	private $fromMailAddress;
 	/** @var IURLGenerator */
@@ -71,7 +72,7 @@ class UsersController extends Controller {
 	 * @param IL10N $l10n
 	 * @param ILogger $log
 	 * @param \OC_Defaults $defaults
-	 * @param \OC_Mail $mail
+	 * @param IMailer $mailer
 	 * @param string $fromMailAddress
 	 * @param IURLGenerator $urlGenerator
 	 * @param IAppManager $appManager
@@ -87,7 +88,7 @@ class UsersController extends Controller {
 								IL10N $l10n,
 								ILogger $log,
 								\OC_Defaults $defaults,
-								\OC_Mail $mail,
+								IMailer $mailer,
 								$fromMailAddress,
 								IURLGenerator $urlGenerator,
 								IAppManager $appManager,
@@ -101,7 +102,7 @@ class UsersController extends Controller {
 		$this->l10n = $l10n;
 		$this->log = $log;
 		$this->defaults = $defaults;
-		$this->mail = $mail;
+		$this->mailer = $mailer;
 		$this->fromMailAddress = $fromMailAddress;
 		$this->urlGenerator = $urlGenerator;
 		$this->subAdminFactory = $subAdminFactory;
@@ -263,7 +264,7 @@ class UsersController extends Controller {
 	 */
 	public function create($username, $password, array $groups=array(), $email='') {
 
-		if($email !== '' && !$this->mail->validateAddress($email)) {
+		if($email !== '' && !\OCP\Mail\Util::validateMailAddress($email)) {
 			return new DataResponse(
 				array(
 					'message' => (string)$this->l10n->t('Invalid mail address')
@@ -329,15 +330,13 @@ class UsersController extends Controller {
 				$subject = $this->l10n->t('Your %s account was created', [$this->defaults->getName()]);
 
 				try {
-					$this->mail->send(
-						$email,
-						$username,
-						$subject,
-						$mailContent,
-						$this->fromMailAddress,
-						$this->defaults->getName(),
-						1,
-						$plainTextMailContent);
+					$message = $this->mailer->createMessage();
+					$message->setTo([$email => $username]);
+					$message->setSubject($subject);
+					$message->setHtmlBody($mailContent);
+					$message->setPlainBody($plainTextMailContent);
+					$message->setFrom([$this->fromMailAddress => $this->defaults->getName()]);
+					$this->mailer->send($message);
 				} catch(\Exception $e) {
 					$this->log->error("Can't send new user mail to $email: " . $e->getMessage(), array('app' => 'settings'));
 				}
@@ -444,7 +443,7 @@ class UsersController extends Controller {
 			);
 		}
 
-		if($mailAddress !== '' && !$this->mail->validateAddress($mailAddress)) {
+		if($mailAddress !== '' && ! \OCP\Mail\Util::validateMailAddress($mailAddress)) {
 			return new DataResponse(
 				array(
 					'status' => 'error',