Allow objects to be put in an "MFA required for all interactions" mode, and support "MFA required" statuses in Maniphest

Summary:
Depends on D19898. Ref T13222. See PHI873. Allow objects to opt into an "MFA is required for all edits" mode.

Put tasks in this mode if they're in a status that specifies it is an `mfa` status.

This is still a little rough for now:

  - There's no UI hint that you'll have to MFA. I'll likely add some hinting in a followup.
  - All edits currently require MFA, even subscribe/unsubscribe. We could maybe relax this if it's an issue.

Test Plan:
  - Edited an MFA-required object via comments, edit forms, and most/all of the extensions. These prompted for MFA, then worked correctly.
  - Tried to edit via Conduit, failed with a reasonably comprehensible error.

Reviewers: amckinley

Reviewed By: amckinley

Maniphest Tasks: T13222

Differential Revision: https://secure.phabricator.com/D19899

src/__phutil_library_map__.php

@@ -1731,6 +1731,7 @@ phutil_register_library_map(array(
     'ManiphestTaskListController' => 'applications/maniphest/controller/ManiphestTaskListController.php',
     'ManiphestTaskListHTTPParameterType' => 'applications/maniphest/httpparametertype/ManiphestTaskListHTTPParameterType.php',
     'ManiphestTaskListView' => 'applications/maniphest/view/ManiphestTaskListView.php',
+    'ManiphestTaskMFAEngine' => 'applications/maniphest/engine/ManiphestTaskMFAEngine.php',
     'ManiphestTaskMailReceiver' => 'applications/maniphest/mail/ManiphestTaskMailReceiver.php',
     'ManiphestTaskMergeInRelationship' => 'applications/maniphest/relationship/ManiphestTaskMergeInRelationship.php',
     'ManiphestTaskMergedFromTransaction' => 'applications/maniphest/xaction/ManiphestTaskMergedFromTransaction.php',
@@ -2977,6 +2978,8 @@ phutil_register_library_map(array(
     'PhabricatorEditEngineListController' => 'applications/transactions/controller/PhabricatorEditEngineListController.php',
     'PhabricatorEditEngineLock' => 'applications/transactions/editengine/PhabricatorEditEngineLock.php',
     'PhabricatorEditEngineLockableInterface' => 'applications/transactions/editengine/PhabricatorEditEngineLockableInterface.php',
+    'PhabricatorEditEngineMFAEngine' => 'applications/transactions/editengine/PhabricatorEditEngineMFAEngine.php',
+    'PhabricatorEditEngineMFAInterface' => 'applications/transactions/editengine/PhabricatorEditEngineMFAInterface.php',
     'PhabricatorEditEnginePointsCommentAction' => 'applications/transactions/commentaction/PhabricatorEditEnginePointsCommentAction.php',
     'PhabricatorEditEngineProfileMenuItem' => 'applications/search/menuitem/PhabricatorEditEngineProfileMenuItem.php',
     'PhabricatorEditEngineQuery' => 'applications/transactions/query/PhabricatorEditEngineQuery.php',
@@ -7298,6 +7301,7 @@ phutil_register_library_map(array(
       'DoorkeeperBridgedObjectInterface',
       'PhabricatorEditEngineSubtypeInterface',
       'PhabricatorEditEngineLockableInterface',
+      'PhabricatorEditEngineMFAInterface',
     ),
     'ManiphestTaskAssignHeraldAction' => 'HeraldAction',
     'ManiphestTaskAssignOtherHeraldAction' => 'ManiphestTaskAssignHeraldAction',
@@ -7336,6 +7340,7 @@ phutil_register_library_map(array(
     'ManiphestTaskListController' => 'ManiphestController',
     'ManiphestTaskListHTTPParameterType' => 'AphrontListHTTPParameterType',
     'ManiphestTaskListView' => 'ManiphestView',
+    'ManiphestTaskMFAEngine' => 'PhabricatorEditEngineMFAEngine',
     'ManiphestTaskMailReceiver' => 'PhabricatorObjectMailReceiver',
     'ManiphestTaskMergeInRelationship' => 'ManiphestTaskRelationship',
     'ManiphestTaskMergedFromTransaction' => 'ManiphestTaskTransactionType',
@@ -8754,6 +8759,7 @@ phutil_register_library_map(array(
     'PhabricatorEditEngineExtensionModule' => 'PhabricatorConfigModule',
     'PhabricatorEditEngineListController' => 'PhabricatorEditEngineController',
     'PhabricatorEditEngineLock' => 'Phobject',
+    'PhabricatorEditEngineMFAEngine' => 'Phobject',
     'PhabricatorEditEnginePointsCommentAction' => 'PhabricatorEditEngineCommentAction',
     'PhabricatorEditEngineProfileMenuItem' => 'PhabricatorProfileMenuItem',
     'PhabricatorEditEngineQuery' => 'PhabricatorCursorPagedPolicyAwareQuery',

src/applications/maniphest/config/PhabricatorManiphestConfigOptions.php

@@ -212,6 +212,8 @@ The keys you can provide in a specification are:
     status.
   - `locked` //Optional bool.// Lock tasks in this status, preventing users
     from commenting.
+  - `mfa` //Optional bool.// Require all edits to this task to be signed with
+    multi-factor authentication.
 
 Statuses will appear in the UI in the order specified. Note the status marked
 `special` as `duplicate` is not settable directly and will not appear in UI

src/applications/maniphest/constants/ManiphestTaskStatus.php

@@ -160,6 +160,10 @@ final class ManiphestTaskStatus extends ManiphestConstants {
     return self::getStatusAttribute($status, 'locked', false);
   }
 
+  public static function isMFAStatus($status) {
+    return self::getStatusAttribute($status, 'mfa', false);
+  }
+
   public static function getStatusActionName($status) {
     return self::getStatusAttribute($status, 'name.action');
   }
@@ -282,6 +286,7 @@ final class ManiphestTaskStatus extends ManiphestConstants {
           'disabled' => 'optional bool',
           'claim' => 'optional bool',
           'locked' => 'optional bool',
+          'mfa' => 'optional bool',
         ));
     }
 

src/applications/maniphest/engine/ManiphestTaskMFAEngine.php

@@ -0,0 +1,11 @@
+<?php
+
+final class ManiphestTaskMFAEngine
+  extends PhabricatorEditEngineMFAEngine {
+
+  public function shouldRequireMFA() {
+    $status = $this->getObject()->getStatus();
+    return ManiphestTaskStatus::isMFAStatus($status);
+  }
+
+}

src/applications/maniphest/storage/ManiphestTask.php

@@ -19,7 +19,8 @@ final class ManiphestTask extends ManiphestDAO
     PhabricatorFerretInterface,
     DoorkeeperBridgedObjectInterface,
     PhabricatorEditEngineSubtypeInterface,
-    PhabricatorEditEngineLockableInterface {
+    PhabricatorEditEngineLockableInterface,
+    PhabricatorEditEngineMFAInterface {
 
   const MARKUP_FIELD_DESCRIPTION = 'markup:desc';
 
@@ -619,4 +620,12 @@ final class ManiphestTask extends ManiphestDAO
     return new ManiphestTaskFerretEngine();
   }
 
+
+/* -(  PhabricatorEditEngineMFAInterface  )---------------------------------- */
+
+
+  public function newEditEngineMFAEngine() {
+    return new ManiphestTaskMFAEngine();
+  }
+
 }

src/applications/subscriptions/controller/PhabricatorSubscriptionsEditController.php

@@ -8,7 +8,7 @@ final class PhabricatorSubscriptionsEditController
     $phid = $request->getURIData('phid');
     $action = $request->getURIData('action');
 
-    if (!$request->isFormPost()) {
+    if (!$request->isFormOrHisecPost()) {
       return new Aphront400Response();
     }
 
@@ -73,6 +73,7 @@ final class PhabricatorSubscriptionsEditController
 
       $editor = id($object->getApplicationTransactionEditor())
         ->setActor($viewer)
+        ->setCancelURI($handle->getURI())
         ->setContinueOnNoEffect(true)
         ->setContinueOnMissingFields(true)
         ->setContentSourceFromRequest($request);

src/applications/transactions/editengine/PhabricatorEditEngine.php

@@ -1041,7 +1041,7 @@ abstract class PhabricatorEditEngine
     }
 
     $validation_exception = null;
-    if ($request->isFormPost() && $request->getBool('editEngine')) {
+    if ($request->isFormOrHisecPost() && $request->getBool('editEngine')) {
       $submit_fields = $fields;
 
       foreach ($submit_fields as $key => $field) {

src/applications/transactions/editengine/PhabricatorEditEngineMFAEngine.php

@@ -0,0 +1,39 @@
+<?php
+
+abstract class PhabricatorEditEngineMFAEngine
+  extends Phobject {
+
+  private $object;
+  private $viewer;
+
+  public function setObject(PhabricatorEditEngineMFAInterface $object) {
+    $this->object = $object;
+    return $this;
+  }
+
+  public function getObject() {
+    return $this->object;
+  }
+
+  public function setViewer(PhabricatorUser $viewer) {
+    $this->viewer = $viewer;
+    return $this;
+  }
+
+  public function getViewer() {
+    if (!$this->viewer) {
+      throw new PhutilInvalidStateException('setViewer');
+    }
+
+    return $this->viewer;
+  }
+
+  final public static function newEngineForObject(
+    PhabricatorEditEngineMFAInterface $object) {
+    return $object->newEditEngineMFAEngine()
+      ->setObject($object);
+  }
+
+  abstract public function shouldRequireMFA();
+
+}

src/applications/transactions/editengine/PhabricatorEditEngineMFAInterface.php

@@ -0,0 +1,7 @@
+<?php
+
+interface PhabricatorEditEngineMFAInterface {
+
+  public function newEditEngineMFAEngine();
+
+}

src/applications/transactions/editor/PhabricatorApplicationTransactionEditor.php

@@ -953,6 +953,7 @@ abstract class PhabricatorApplicationTransactionEditor
     $this->isNewObject = ($object->getPHID() === null);
 
     $this->validateEditParameters($object, $xactions);
+    $xactions = $this->newMFATransactions($object, $xactions);
 
     $actor = $this->requireActor();
 
@@ -4825,12 +4826,23 @@ abstract class PhabricatorApplicationTransactionEditor
 
     $request = $this->getRequest();
     if ($request === null) {
+      $source_type = $this->getContentSource()->getSourceTypeConstant();
+      $conduit_type = PhabricatorConduitContentSource::SOURCECONST;
+      $is_conduit = ($source_type === $conduit_type);
+      if ($is_conduit) {
+        throw new Exception(
+          pht(
+            'This transaction group requires MFA to apply, but you can not '.
+            'provide an MFA response via Conduit. Edit this object via the '.
+            'web UI.'));
+      } else {
         throw new Exception(
           pht(
             'This transaction group requires MFA to apply, but the Editor was '.
             'not configured with a Request. This workflow can not perform an '.
             'MFA check.'));
       }
+    }
 
     $cancel_uri = $this->getCancelURI();
     if ($cancel_uri === null) {
@@ -4850,4 +4862,46 @@ abstract class PhabricatorApplicationTransactionEditor
     }
   }
 
+  private function newMFATransactions(
+    PhabricatorLiskDAO $object,
+    array $xactions) {
+
+    $is_mfa = ($object instanceof PhabricatorEditEngineMFAInterface);
+    if (!$is_mfa) {
+      return $xactions;
+    }
+
+    $engine = PhabricatorEditEngineMFAEngine::newEngineForObject($object)
+      ->setViewer($this->getActor());
+    $require_mfa = $engine->shouldRequireMFA();
+
+    if (!$require_mfa) {
+      return $xactions;
+    }
+
+    $type_mfa = PhabricatorTransactions::TYPE_MFA;
+
+    $has_mfa = false;
+    foreach ($xactions as $xaction) {
+      if ($xaction->getTransactionType() === $type_mfa) {
+        $has_mfa = true;
+        break;
+      }
+    }
+
+    if ($has_mfa) {
+      return $xactions;
+    }
+
+    $template = $object->getApplicationTransactionTemplate();
+
+    $mfa_xaction = id(clone $template)
+      ->setTransactionType($type_mfa)
+      ->setNewValue(true);
+
+    array_unshift($xactions, $mfa_xaction);
+
+    return $xactions;
+  }
+
 }