External SMB/CIFS Broken on 17.0.1

[cyberfarer]

After upgrading to 17.0.1 Beta, I am no longer able to add External SMB/CIFS storage. Existing storage remains available to users.

Steps to reproduce

1. Update to 17.0.1 Beta
2. Add SMB/CIFS external storage

Expected behaviour

When correct information is added, a green check mark should appear to the left of the entry. The storage should be available via frontend.

Actual behaviour

Red exclamation mark appears and storage is not saved nor available.

Server configuration

Operating system:
Ubuntu 18.04 LTS

Web server:
Apache 2.4.29

Database:
MySQL 5.7

PHP version:
7.2.24

Nextcloud version: (see Nextcloud admin page)
17.0.1 Beta

Updated from an older Nextcloud/ownCloud or fresh install:
Updated from 17

I have reverted back to 17 from a snapshot.

[kesselb]

Something in the logs?

[cyberfarer]

Unfortunately, no and I did enable debugging. I also removed php-smbclient but no change.

[rawrspace]

I am also getting this error in 17.0.1 Beta

The network call to save the external storage returns a 422 with the response of
{"message":"Unsatisfied backend parameters"}

Request was

{
    "mountPoint": "FolderInNC",
    "backend": "smb",
    "authMechanism": "password::password",
    "backendOptions": {
        "host": "192.168.0.25",
        "share": "ShareName",
        "root": "FolderInShare",
        "domain": "",
        "show_hidden": false,
        "timeout": "",
        "user": "user",
        "password": "password"
    },
    "testOnly": true,
    "mountOptions": {
        "encrypt": true,
        "previews": true,
        "enable_sharing": false,
        "filesystem_check_changes": 1,
        "encoding_compatibility": false,
        "readonly": false
    }
}

[kesselb]

server/apps/files_external/lib/Lib/Backend/SMB.php

Lines 56 to 57 in 88b6dc5

	(new DefinitionParameter('timeout', $l->t('Timeout')))
	->setType(DefinitionParameter::VALUE_HIDDEN)

Does it work again if you change the above code to?

    (new DefinitionParameter('timeout', $l->t('Timeout')))
        ->setType(DefinitionParameter::VALUE_HIDDEN)
        ->setFlag(DefinitionParameter::FLAG_OPTIONAL) 

Edit: Fixed the wrong comma.

[rawrspace]

@kesselb There is a slight typo in what you provided with the comma position but I can confirm that it resolved the issue to use the following;

(new DefinitionParameter('timeout', $l->t('Timeout')))      
                ->setType(DefinitionParameter::VALUE_HIDDEN)                
                ->setFlag(DefinitionParameter::FLAG_OPTIONAL),

[spiezmaestro]

Had the same issue (17.0.1 RC) and can confirm, that changing the code as suggested (with the correct comma position as noted by rawrspace) fixed it. Can change/add SMB shares again.

[scanom]

Same issue happening with 16.0.6, patch solves it.

[e-alfred]

Anyone pushing a PR to get this fix into the codebase?

[southeasterntech]

I can confirm that this solution does work and the issue is still present in 17.01 stable.