e95fa927a040a8d89ac8e63e0cf0622c4efd1374
galt
  Fri Dec 19 13:36:23 2025 -0800
Revert "Reapply "Little patch for udc.localDir and trackHub security for local bigDataUrl disallowed for non-local hubUrl. We have to double check the cached trackDb data. fixes #34544""

This reverts commit 4cf72ff67368e864c7e80b8918245689d22264f6.

We can use touch single file hub.txt or rm -rf $cacheTrackDbDir to force
updating the trackDb cache and still allow udc.localDir to be used.

diff --git src/hg/lib/trackHub.c src/hg/lib/trackHub.c
index 4a967f0f4bd..0df9264a79b 100644
--- src/hg/lib/trackHub.c
+++ src/hg/lib/trackHub.c
@@ -1931,39 +1931,32 @@
     {
     boolean doCache = trackDbCacheOn();
 
     if (doCache)
         {
         // we have to open the trackDb file to get the udc cache to check for an update
         struct udcFile *checkCache = udcFileMayOpen(hubGenome->trackDbFile, NULL);
         if (checkCache != NULL)
             {
             time_t time = udcUpdateTime(checkCache);
             udcFileClose(&checkCache);
 
             struct trackDb *cacheTdb = trackDbHubCache(hubGenome->trackDbFile, time);
 
             if (cacheTdb != NULL)
-		{
-		struct trackDb *tdb;
-		for (tdb = cacheTdb; tdb != NULL; tdb = tdb->next)
-		    {  // disallow local bigDataUrl with non-local hub.
-		    expandBigDataUrl(hubGenome->trackHub, hubGenome, tdb);
-		    }
                 return cacheTdb;
             }
-            }
 
         memCheckPoint(); // we want to know how much memory is used to build the tdbList
         }
 
     struct dyString *incFiles = newDyString(4096);
     boolean foundFirstGenome = FALSE;
     tdbList = trackHubTracksForGenome(hubGenome->trackHub, hubGenome, incFiles, &foundFirstGenome);
     tdbList = trackDbLinkUpGenerations(tdbList);
     tdbList = trackDbPolishAfterLinkup(tdbList, hubGenome->name);
     trackDbPrioritizeContainerItems(tdbList);
     trackHubPolishTrackNames(hubGenome->trackHub, tdbList);
 
     if (doCache)
         trackDbHubCloneTdbListToSharedMem(hubGenome->trackDbFile, tdbList, memCheckPoint(), incFiles->string);
     }