Google Drive external storage broke my owncloud

[stanelie]

Expected behaviour

Attach a google drive external storage and be able to use it

Actual behaviour

It doesn't work well with big files because it is unable to stream (see issue owncloud/core#5949). So I tried to remove the google drive external storage. Now, I get
"Error while loading the list of folders from the server" from the Mac or PC client and I am unable to sync anything. Also, I now get "Your web server is not yet set up properly to allow file synchronization because the WebDAV interface seems to be broken." in the admin panel.

Steps to reproduce

1. Attach external Google Drive storage containing big files
2. weep

Server configuration

Operating system:
Ubuntu 14.04
Web server:
Apache
Database:
MySQL
PHP version:
5.5.9-1ubuntu4.14
ownCloud version:
8.2.2
Storage backend:
Local and smb shares through "external storage" app

Client configuration

Client version:
2.x
Operating system:
windows 7
OS language:
English
Installation path of client:
default

Logs

1. Output of owncloud --logwindow or owncloud --logfile log.txt
   empty
2. Web server error log:
   nothing relevant
3. ownCloud log (data/owncloud.log):
   Exception: {"Exception":"Exception","Message":"Creating \\OC\\Files\\Storage\\Google storage failed","Code":0,"Trace":"#0 \/var\/www\/owncloud\/apps\/files_external\/lib\/config.php(258): OC\\Files\\Storage\\Google->__construct(Array)\n#1 \/var\/www\/owncloud\/apps\/files_external\/controller\/storagescontroller.php(237): OC_Mount_Config::getBackendStatus('\\OC\\Files\\Stora...', Array, false)\n#2 \/var\/www\/owncloud\/apps\/files_external\/controller\/storagescontroller.php(257): OCA\\Files_External\\Controller\\StoragesController->updateStorageStatus(Object(OCA\\Files_external\\Lib\\StorageConfig))\n#3 [internal function]: OCA\\Files_External\\Controller\\StoragesController->show(13)\n#4 \/var\/www\/owncloud\/lib\/private\/appframework\/http\/dispatcher.php(159): call_user_func_array(Array, Array)\n#5 \/var\/www\/owncloud\/lib\/private\/appframework\/http\/dispatcher.php(89): OC\\AppFramework\\Http\\Dispatcher->executeController(Object(OCA\\Files_External\\Controller\\GlobalStoragesController), 'show')\n#6 \/var\/www\/owncloud\/lib\/private\/appframework\/app.php(108): OC\\AppFramework\\Http\\Dispatcher->dispatch(Object(OCA\\Files_External\\Controller\\GlobalStoragesController), 'show')\n#7 \/var\/www\/owncloud\/lib\/private\/appframework\/routing\/routeactionhandler.php(45): OC\\AppFramework\\App::main('GlobalStoragesC...', 'show', Object(OC\\AppFramework\\DependencyInjection\\DIContainer), Array)\n#8 [internal function]: OC\\AppFramework\\routing\\RouteActionHandler->__invoke(Array)\n#9 \/var\/www\/owncloud\/lib\/private\/route\/router.php(291): call_user_func(Object(OC\\AppFramework\\routing\\RouteActionHandler), Array)\n#10 \/var\/www\/owncloud\/lib\/base.php(851): OC\\Route\\Router->match('\/apps\/files_ext...')\n#11 \/var\/www\/owncloud\/index.php(39): OC::handleRequest()\n#12 {main}","File":"\/var\/www\/owncloud\/apps\/files_external\/lib\/google.php","Line":80}

and also this from tail owncloud.log
{"reqId":"5AkHaFiFahAbGZKcSnsy","remoteAddr":"192.168.0.2","app":"files_external","message":"Exception: {\"Exception\":\"Exception\",\"Message\":\"Creating \\\\OC\\\\Files\\\\Storage\\\\Google storage failed\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/owncloud\\\/apps\\\/files_external\\\/lib\\\/config.php(258): OC\\\\Files\\\\Storage\\\\Google->__construct(Array)\\n#1 \\\/var\\\/www\\\/owncloud\\\/apps\\\/files_external\\\/controller\\\/storagescontroller.php(237): OC_Mount_Config::getBackendStatus('\\\\OC\\\\Files\\\\Stora...', Array, false)\\n#2 \\\/var\\\/www\\\/owncloud\\\/apps\\\/files_external\\\/controller\\\/storagescontroller.php(257): OCA\\\\Files_External\\\\Controller\\\\StoragesController->updateStorageStatus(Object(OCA\\\\Files_external\\\\Lib\\\\StorageConfig))\\n#3 [internal function]: OCA\\\\Files_External\\\\Controller\\\\StoragesController->show(13)\\n#4 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/appframework\\\/http\\\/dispatcher.php(159): call_user_func_array(Array, Array)\\n#5 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/appframework\\\/http\\\/dispatcher.php(89): OC\\\\AppFramework\\\\Http\\\\Dispatcher->executeController(Object(OCA\\\\Files_External\\\\Controller\\\\GlobalStoragesController), 'show')\\n#6 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/appframework\\\/app.php(108): OC\\\\AppFramework\\\\Http\\\\Dispatcher->dispatch(Object(OCA\\\\Files_External\\\\Controller\\\\GlobalStoragesController), 'show')\\n#7 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/appframework\\\/routing\\\/routeactionhandler.php(45): OC\\\\AppFramework\\\\App::main('GlobalStoragesC...', 'show', Object(OC\\\\AppFramework\\\\DependencyInjection\\\\DIContainer), Array)\\n#8 [internal function]: OC\\\\AppFramework\\\\routing\\\\RouteActionHandler->__invoke(Array)\\n#9 \\\/var\\\/www\\\/owncloud\\\/lib\\\/private\\\/route\\\/router.php(291): call_user_func(Object(OC\\\\AppFramework\\\\routing\\\\RouteActionHandler), Array)\\n#10 \\\/var\\\/www\\\/owncloud\\\/lib\\\/base.php(851): OC\\\\Route\\\\Router->match('\\\/apps\\\/files_ext...')\\n#11 \\\/var\\\/www\\\/owncloud\\\/index.php(39): OC::handleRequest()\\n#12 {main}\",\"File\":\"\\\/var\\\/www\\\/owncloud\\\/apps\\\/files_external\\\/lib\\\/google.php\",\"Line\":80}","level":3,"time":"2016-03-08T15:23:53+00:00"}

Note : the 192.168.0.2 local address is my reverse proxy.

[guruz]

Sorry, I have to ask you to submit this in https://github.com/owncloud/core
This repo is for client issues, this here is caused by the server.