Fix old image macros and memes for logged out users

Summary:
Fixes T6013. Old image macros/memes never had the file edge written.

We also never wrote file edges for audio.

Finally, the meme controller didn't allow public access.

Write edges for images and audio, perform a migration to populate the historic ones, and make the Editor keep them up to date going forward.

Test Plan:
  - Updated image, saw new image attach and old image detach.
  - Updated audio, saw new audio attach and old audio detach.
  - Ran migration.
  - Viewed memes as a logged-out user.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T6013

Differential Revision: https://secure.phabricator.com/D10411

resources/celerity/map.php

@@ -8,7 +8,7 @@
 return array(
   'names' => array(
     'core.pkg.css' => '974635bb',
-    'core.pkg.js' => '4e529147',
+    'core.pkg.js' => 'cebacb31',
     'darkconsole.pkg.js' => 'df001cab',
     'differential.pkg.css' => '36884139',
     'differential.pkg.js' => '73337d1d',
@@ -438,7 +438,7 @@ return array(
     'rsrc/js/application/uiexample/notification-example.js' => '7a9677fc',
     'rsrc/js/core/Busy.js' => '6453c869',
     'rsrc/js/core/DragAndDropFileUpload.js' => '8c49f386',
-    'rsrc/js/core/DraggableList.js' => '98d13594',
+    'rsrc/js/core/DraggableList.js' => '2a6a1041',
     'rsrc/js/core/FileUpload.js' => 'a4ae61bf',
     'rsrc/js/core/Hovercard.js' => '7e8468ae',
     'rsrc/js/core/KeyboardShortcut.js' => '1ae869f2',
@@ -713,7 +713,7 @@ return array(
     'phabricator-crumbs-view-css' => 'a49339de',
     'phabricator-dashboard-css' => 'a2bfdcbf',
     'phabricator-drag-and-drop-file-upload' => '8c49f386',
-    'phabricator-draggable-list' => '98d13594',
+    'phabricator-draggable-list' => '2a6a1041',
     'phabricator-fatal-config-template-css' => '25d446d6',
     'phabricator-feed-css' => '7bfc6f12',
     'phabricator-file-upload' => 'a4ae61bf',
@@ -987,6 +987,14 @@ return array(
       'javelin-install',
       'javelin-util',
     ),
+    '2a6a1041' => array(
+      'javelin-install',
+      'javelin-dom',
+      'javelin-stratcom',
+      'javelin-util',
+      'javelin-vector',
+      'javelin-magical-init',
+    ),
     '2b228192' => array(
       'javelin-behavior',
       'javelin-dom',
@@ -1437,14 +1445,6 @@ return array(
       'javelin-dom',
       'javelin-reactor-dom',
     ),
-    '98d13594' => array(
-      'javelin-install',
-      'javelin-dom',
-      'javelin-stratcom',
-      'javelin-util',
-      'javelin-vector',
-      'javelin-magical-init',
-    ),
     '9c2623f4' => array(
       'javelin-behavior',
       'javelin-stratcom',

resources/sql/autopatches/20140904.macroattach.php

@@ -0,0 +1,26 @@
+<?php
+
+$table = new PhabricatorFileImageMacro();
+foreach (new LiskMigrationIterator($table) as $macro) {
+  $name = $macro->getName();
+
+  echo "Linking macro '{$name}'...\n";
+
+  $editor = new PhabricatorEdgeEditor();
+
+  $phids[] = $macro->getFilePHID();
+  $phids[] = $macro->getAudioPHID();
+  $phids = array_filter($phids);
+
+  if ($phids) {
+    foreach ($phids as $phid) {
+      $editor->addEdge(
+        $macro->getPHID(),
+        PhabricatorEdgeConfig::TYPE_OBJECT_HAS_FILE,
+        $phid);
+    }
+    $editor->save();
+  }
+}
+
+echo "Done.\n";

src/applications/macro/controller/PhabricatorMacroMemeController.php

@@ -3,6 +3,10 @@
 final class PhabricatorMacroMemeController
   extends PhabricatorMacroController {
 
+  public function shouldAllowPublic() {
+    return true;
+  }
+
   public function processRequest() {
     $request = $this->getRequest();
     $macro_name = $request->getStr('macro');

src/applications/macro/editor/PhabricatorMacroEditor.php

@@ -82,19 +82,39 @@ final class PhabricatorMacroEditor
   protected function applyCustomExternalTransaction(
     PhabricatorLiskDAO $object,
     PhabricatorApplicationTransaction $xaction) {
-    return;
-  }
-
-  protected function extractFilePHIDsFromCustomTransaction(
-    PhabricatorLiskDAO $object,
-    PhabricatorApplicationTransaction $xaction) {
 
     switch ($xaction->getTransactionType()) {
       case PhabricatorMacroTransactionType::TYPE_FILE:
-        return array($xaction->getNewValue());
+      case PhabricatorMacroTransactionType::TYPE_AUDIO:
-    }
+        // When changing a macro's image or audio, attach the underlying files
+        // to the macro (and detach the old files).
+        $old = $xaction->getOldValue();
+        $new = $xaction->getNewValue();
+        $all = array();
+        if ($old) {
+          $all[] = $old;
+        }
+        if ($new) {
+          $all[] = $new;
+        }
 
-    return array();
+        $files = id(new PhabricatorFileQuery())
+          ->setViewer($this->requireActor())
+          ->withPHIDs($all)
+          ->execute();
+        $files = mpull($files, null, 'getPHID');
+
+        $old_file = idx($files, $old);
+        if ($old_file) {
+          $old_file->detachFromObject($object->getPHID());
+        }
+
+        $new_file = idx($files, $new);
+        if ($new_file) {
+          $new_file->attachToObject($this->requireActor(), $object->getPHID());
+        }
+        break;
+    }
   }
 
   protected function mergeTransactions(