Make "Receive Test" mail form use MailReceivers

Summary: Currently this is fairly hard-coded. Instead, make it use available receivers. Ref T1205.

Test Plan: Used mail form to send mail to various objects (Dnn, Tnn, Cnn, etc.). Only some of these work right now because the receiver thing still hard-codes a bunch of junk.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T1205

Differential Revision: https://secure.phabricator.com/D5944

src/applications/diffusion/query/DiffusionCommitQuery.php

@@ -3,6 +3,7 @@
 final class DiffusionCommitQuery
   extends PhabricatorCursorPagedPolicyAwareQuery {
 
+  private $ids;
   private $identifiers;
   private $phids;
   private $defaultRepository;
@@ -32,6 +33,11 @@ final class DiffusionCommitQuery
     return $this;
   }
 
+  public function withIDs(array $ids) {
+    $this->ids = $ids;
+    return $this;
+  }
+
   public function withPHIDs(array $phids) {
     $this->phids = $phids;
     return $this;
@@ -164,6 +170,13 @@ final class DiffusionCommitQuery
       $where[] = '('.implode(' OR ', $sql).')';
     }
 
+    if ($this->ids) {
+      $where[] = qsprintf(
+        $conn_r,
+        'id IN (%Ld)',
+        $this->ids);
+    }
+
     if ($this->phids) {
       $where[] = qsprintf(
         $conn_r,

src/applications/metamta/controller/PhabricatorMetaMTAReceiveController.php

@@ -19,23 +19,64 @@ final class PhabricatorMetaMTAReceiveController
 
       if (!empty($from)) {
         $header_content['from'] = $from;
+      } else {
+        // If the user doesn't provide a "From" address, use their primary
+        // address.
+        $header_content['from'] = $user->loadPrimaryEmail()->getAddress();
       }
 
       if (preg_match('/.+@.+/', $to)) {
         $header_content['to'] = $to;
       } else {
-        $receiver = PhabricatorMetaMTAReceivedMail::loadReceiverObject($to);
+
+        // We allow the user to use an object name instead of a real address
+        // as a convenience. To build the mail, we build a similar message and
+        // look for a receiver which will accept it.
+        $pseudohash = PhabricatorObjectMailReceiver::computeMailHash('x', 'y');
+        $pseudomail = id(new PhabricatorMetaMTAReceivedMail())
+          ->setHeaders(
+            array(
+              'to' => $to.'+1+'.$pseudohash,
+            ));
+
+        $receivers = id(new PhutilSymbolLoader())
+          ->setAncestorClass('PhabricatorMailReceiver')
+          ->loadObjects();
+
+        $receiver = null;
+        foreach ($receivers as $possible_receiver) {
+          if (!$possible_receiver->isEnabled()) {
+            continue;
+          }
+          if (!$possible_receiver->canAcceptMail($pseudomail)) {
+            continue;
+          }
+          $receiver = $possible_receiver;
+          break;
+        }
 
         if (!$receiver) {
-          throw new Exception(pht("No such task or revision!"));
+          throw new Exception(
+            "No configured mail receiver can accept mail to '{$to}'.");
+        }
+
+        if (!($receiver instanceof PhabricatorObjectMailReceiver)) {
+          $class = get_class($receiver);
+          throw new Exception(
+            "Receiver '{$class}' accepts mail to '{$to}', but is not a ".
+            "subclass of PhabricatorObjectMailReceiver.");
+        }
+
+        $object = $receiver->loadMailReceiverObject($to, $user);
+        if (!$object) {
+          throw new Exception("No such object '{$to}'!");
         }
 
         $hash = PhabricatorObjectMailReceiver::computeMailHash(
-          $receiver->getMailKey(),
+          $object->getMailKey(),
           $user->getPHID());
 
-        $header_content['to'] =
+        $header_content['to'] = $to.'+'.$user->getID().'+'.$hash.'@test.com';
-          $to.'+'.$user->getID().'+'.$hash.'@';
       }
 
       $received->setHeaders($header_content);

src/applications/metamta/receiver/PhabricatorObjectMailReceiver.php

@@ -26,6 +26,10 @@ abstract class PhabricatorObjectMailReceiver extends PhabricatorMailReceiver {
    */
   abstract protected function loadObject($pattern, PhabricatorUser $viewer);
 
+  public function loadMailReceiverObject($pattern, PhabricatorUser $viewer) {
+    return $this->loadObject($pattern, $viewer);
+  }
+
 
   public function validateSender(
     PhabricatorMetaMTAReceivedMail $mail,