Exception at file:scan on external SMB storage and show_hidden:false

[beckenc]

Steps to reproduce

1. Mount external storage via SMB/CIFS

| 20       | /music      | SMB / CIFS | Username and password               | host: "10.0.0.1", share: "music", root: "", domain: "", show_hidden: false, timeout: "", user: "admin", password: "***" |         |                  | Users, admin      |

runuser -u apache -- php /var/www/localhost/htdocs/nextcloud/occ files:scan cbe -vvv

3. setting show_hidden: true let files:scan succeed

Expected behaviour

Find some files without throwing any exceptions

Actual behaviour

Scan all the local files / folders without any issues.
Start scanning the external SMB storage throws an exception

Exception during scan: Uninitialized string offset: 0
#0 /var/www/localhost/htdocs/nextcloud/apps/files_external/3rdparty/icewind/smb/src/Native/NativeFileInfo.php(144): OCA\Files\Command\Scan->exceptionErrorHandler()
#1 /var/www/localhost/htdocs/nextcloud/apps/files_external/lib/Lib/Storage/SMB.php(577): Icewind\SMB\Native\NativeFileInfo->isHidden()
#2 /var/www/localhost/htdocs/nextcloud/lib/private/Files/Storage/Common.php(148): OCA\Files_External\Lib\Storage\SMB->isUpdatable()
#3 /var/www/localhost/htdocs/nextcloud/lib/private/Files/Storage/Common.php(168): OC\Files\Storage\Common->isCreatable()
#4 /var/www/localhost/htdocs/nextcloud/lib/private/Files/Storage/Common.php(700): OC\Files\Storage\Common->getPermissions()
#5 /var/www/localhost/htdocs/nextcloud/lib/private/Files/Storage/Wrapper/Wrapper.php(582): OC\Files\Storage\Common->getMetaData()
#6 /var/www/localhost/htdocs/nextcloud/lib/private/Files/Storage/Wrapper/PermissionsMask.php(145): OC\Files\Storage\Wrapper\Wrapper->getMetaData()
#7 /var/www/localhost/htdocs/nextcloud/lib/private/Files/Storage/Wrapper/Wrapper.php(582): OC\Files\Storage\Wrapper\PermissionsMask->getMetaData()
#8 /var/www/localhost/htdocs/nextcloud/lib/private/Files/Storage/Wrapper/Availability.php(443): OC\Files\Storage\Wrapper\Wrapper->getMetaData()
#9 /var/www/localhost/htdocs/nextcloud/lib/private/Files/Storage/Wrapper/Wrapper.php(582): OC\Files\Storage\Wrapper\Availability->getMetaData()
#10 /var/www/localhost/htdocs/nextcloud/lib/private/Files/Cache/Scanner.php(113): OC\Files\Storage\Wrapper\Wrapper->getMetaData()
#11 /var/www/localhost/htdocs/nextcloud/lib/private/Files/Cache/Scanner.php(151): OC\Files\Cache\Scanner->getData()
#12 /var/www/localhost/htdocs/nextcloud/lib/private/Files/Cache/Scanner.php(337): OC\Files\Cache\Scanner->scanFile()
#13 /var/www/localhost/htdocs/nextcloud/lib/private/Files/Utils/Scanner.php(261): OC\Files\Cache\Scanner->scan()
#14 /var/www/localhost/htdocs/nextcloud/apps/files/lib/Command/Scan.php(151): OC\Files\Utils\Scanner->scan()
#15 /var/www/localhost/htdocs/nextcloud/apps/files/lib/Command/Scan.php(207): OCA\Files\Command\Scan->scanFiles()
#16 /var/www/localhost/htdocs/nextcloud/3rdparty/symfony/console/Command/Command.php(255): OCA\Files\Command\Scan->execute()
#17 /var/www/localhost/htdocs/nextcloud/core/Command/Base.php(168): Symfony\Component\Console\Command\Command->run()
#18 /var/www/localhost/htdocs/nextcloud/3rdparty/symfony/console/Application.php(915): OC\Core\Command\Base->run()
#19 /var/www/localhost/htdocs/nextcloud/3rdparty/symfony/console/Application.php(272): Symfony\Component\Console\Application->doRunCommand()
#20 /var/www/localhost/htdocs/nextcloud/3rdparty/symfony/console/Application.php(148): Symfony\Component\Console\Application->doRun()
#21 /var/www/localhost/htdocs/nextcloud/lib/private/Console/Application.php(214): Symfony\Component\Console\Application->run()
#22 /var/www/localhost/htdocs/nextcloud/console.php(99): OC\Console\Application->run()
#23 /var/www/localhost/htdocs/nextcloud/occ(11): require_once('/var/www/localh...')
#24 {main}

Server configuration

Operating system:
Linux vm-gentoo-homeserver 5.4.38-gentoo #3 SMP Wed May 27 20:26:06 CEST 2020 x86_64 Intel(R) Xeon(R) E-2224 CPU @ 3.40GHz GenuineIntel GNU/Linux

Web server:
$ apache2 -v
Server version: Apache/2.4.41 (Unix)
Server built: May 28 2020 09:05:10

Database:
$ mysql --version
mysql Ver 15.1 Distrib 10.4.12-MariaDB, for Linux (x86_64) using readline 8.0

PHP version:
$ php-fpm --version
PHP 7.4.6 (fpm-fcgi) (built: May 28 2020 16:43:47)

Nextcloud version: (see Nextcloud admin page)
18.0.4 patched with #20622 (comment)

Updated from an older Nextcloud/ownCloud or fresh install:
fresh install

Where did you install Nextcloud from:
portage tree

Signing status:

Signing status

No errors have been found.

List of activated apps:

App list

$ runuser -u apache -- php /var/www/localhost/htdocs/nextcloud/occ app:list
Enabled:
  - accessibility: 1.4.0
  - activity: 2.11.0
  - apporder: 0.10.0
  - bruteforcesettings: 1.6.0
  - calendar: 2.0.3
  - camerarawpreviews: 0.7.3
  - cloud_federation_api: 1.1.0
  - contacts: 3.3.0
  - dav: 1.14.0
  - external: 3.5.0
  - extract: 1.2.4
  - federatedfilesharing: 1.8.0
  - files: 1.13.1
  - files_accesscontrol: 1.8.1
  - files_external: 1.9.0
  - files_pdfviewer: 1.7.0
  - files_rightclick: 0.15.2
  - files_trashbin: 1.8.0
  - files_versions: 1.11.0
  - files_videoplayer: 1.7.0
  - logreader: 2.3.0
  - lookup_server_connector: 1.6.0
  - nextcloud_announcements: 1.7.0
  - notifications: 2.6.0
  - oauth2: 1.6.0
  - password_policy: 1.8.0
  - photos: 1.0.0
  - previewgenerator: 2.3.0
  - privacy: 1.2.0
  - provisioning_api: 1.8.0
  - recommendations: 0.6.0
  - serverinfo: 1.8.0
  - settings: 1.0.0
  - support: 1.1.0
  - survey_client: 1.6.0
  - systemtags: 1.8.0
  - text: 2.0.0
  - theming: 1.9.0
  - twofactor_backupcodes: 1.7.0
  - updatenotification: 1.8.0
  - viewer: 1.2.0
  - workflowengine: 2.0.0
Disabled:
  - admin_audit
  - comments
  - encryption
  - federation
  - files_external_ipfs
  - files_sharing
  - firstrunwizard
  - sharebymail
  - socialsharing_email
  - user_ldap

Nextcloud configuration:

Config report

$ runuser -u apache -- php /var/www/localhost/htdocs/nextcloud/occ config:list system
{
    "system": {
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "192.168.178.6",
            "vm-gentoo-homeserver"
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "mysql",
        "version": "18.0.4.2",
        "overwrite.cli.url": "http:\/\/vm-gentoo-homeserver\/nextcloud",
        "htaccess.RewriteBase": "\/nextcloud",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "mail_smtpmode": "smtp",
        "mail_smtpsecure": "tls",
        "mail_sendmailmode": "smtp",
        "mail_smtpauthtype": "LOGIN",
        "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpport": "587",
        "mail_smtpauth": 1,
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpname": "***REMOVED SENSITIVE VALUE***",
        "mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
        "memcache.local": "\\OC\\Memcache\\APCu",
        "log_type": "file",
        "logfile": "\/mnt\/nfs\/fileserver\/nextcloud\/data\/nextcloud.log",
        "loglevel": "2",
        "logdateformat": "F d, Y H:i:s",
        "log_rotate_size": 104857600,
        "updater.release.channel": "stable",
        "updater.secret": "***REMOVED SENSITIVE VALUE***"
    }
}

Are you using external storage, if yes which one: smb

Are you using encryption: no

Are you using an external user-backend, if yes which one: no

Client configuration

Browser:
Firefox 76.0.1

Operating system:
$ uname -a
Linux lxlaptop 5.4.38-gentoo #4 SMP Fri May 15 23:37:30 CEST 2020 x86_64 Intel(R) Core(TM) i5-4300M CPU @ 2.60GHz GenuineIntel GNU/Linux

Logs

Web server error log

Web server error log

error_log:
$ cat /var/log/apache2/ssl_error_log 
[Sun May 31 19:39:14.625576 2020] [proxy:error] [pid 21178] (2)No such file or directory: AH02454: FCGI: attempt to connect to Unix domain socket /var/run/php-fpm/www.sock (*) failed
[Sun May 31 19:39:14.625634 2020] [proxy_fcgi:error] [pid 21178] [client 192.168.178.21:58084] AH01079: failed to make connection to backend: httpd-UDS
[Mon Jun 01 08:22:42.830364 2020] [proxy_fcgi:error] [pid 26830] [client 192.168.178.21:38774] AH01071: Got error 'PHP message: PHP Deprecated:  The behavior of unparenthesized expressions containing both '.' and '+'/'-' will change in PHP 8: '+'/'-' will take a higher precedence in /var/www/localhost/htdocs/nextcloud/3rdparty/sabre/vobject/lib/Recur/RRuleIterator.php on line 357PHP message: PHP Deprecated:  The behavior of unparenthesized expressions containing both '.' and '+'/'-' will change in PHP 8: '+'/'-' will take a higher precedence in /var/www/localhost/htdocs/nextcloud/3rdparty/sabre/vobject/lib/Recur/RRuleIterator.php on line 423'

Nextcloud log (data/nextcloud.log)

Nextcloud log

{"reqId":"XtUXlfxRFTGLuT6-G7B1rwAAAAE","level":3,"time":"June 01, 2020 14:58:29","remoteAddr":"192.168.178.21","user":"admin","app":"PHP","method":"GET","url":"/nextcloud/index.php/apps/files/ajax/getstoragestats.php?dir=%2Fmusic","message":"Uninitialized string offset: 0 at /var/www/localhost/htdocs/nextcloud/apps/files_external/3rdparty/icewind/smb/src/Native/NativeFileInfo.php#144","userAgent":"Mozilla/5.0 (X11; Linux x86_64; rv:76.0) Gecko/20100101 Firefox/76.0","version":"18.0.4.2"}
{"reqId":"Lr55lgSPdBSiJNKYO63P","level":3,"time":"June 01, 2020 15:00:01","remoteAddr":"","user":"--","app":"PHP","method":"","url":"--","message":"Uninitialized string offset: 0 at /var/www/localhost/htdocs/nextcloud/apps/files_external/3rdparty/icewind/smb/src/Native/NativeFileInfo.php#144","userAgent":"--","version":"18.0.4.2"}
{"reqId":"Lr55lgSPdBSiJNKYO63P","level":3,"time":"June 01, 2020 15:00:01","remoteAddr":"","user":"--","app":"PHP","method":"","url":"--","message":"Uninitialized string offset: 0 at /var/www/localhost/htdocs/nextcloud/apps/files_external/3rdparty/icewind/smb/src/Native/NativeFileInfo.php#144","userAgent":"--","version":"18.0.4.2"}
{"reqId":"Lr55lgSPdBSiJNKYO63P","level":3,"time":"June 01, 2020 15:00:01","remoteAddr":"","user":"--","app":"PHP","method":"","url":"--","message":"Uninitialized string offset: 0 at /var/www/localhost/htdocs/nextcloud/apps/files_external/3rdparty/icewind/smb/src/Native/NativeFileInfo.php#144","userAgent":"--","version":"18.0.4.2"}
{"reqId":"Lr55lgSPdBSiJNKYO63P","level":3,"time":"June 01, 2020 15:00:01","remoteAddr":"","user":"--","app":"PHP","method":"","url":"--","message":"Uninitialized string offset: 0 at /var/www/localhost/htdocs/nextcloud/apps/files_external/3rdparty/icewind/smb/src/Native/NativeFileInfo.php#144","userAgent":"--","version":"18.0.4.2"}
{"reqId":"Lr55lgSPdBSiJNKYO63P","level":3,"time":"June 01, 2020 15:00:01","remoteAddr":"","user":"--","app":"PHP","method":"","url":"--","message":"Uninitialized string offset: 0 at /var/www/localhost/htdocs/nextcloud/apps/files_external/3rdparty/icewind/smb/src/Native/NativeFileInfo.php#144","userAgent":"--","version":"18.0.4.2"}

Browser log

Browser log

Insert your browser log here, this could for example include:

a) The javascript console log
b) The network log
c) ...

[szaimen]

Seems like this was fixed with #21252