[Libreoffice-bugs] [Bug 113033] New: No error message when trying to save a locked document from a SMB external storage in Nextcloud with Collabora Online

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=113033

            Bug ID: 113033
           Summary: No error message when trying to save a locked document
                    from a SMB external storage in Nextcloud with
                    Collabora Online
           Product: LibreOffice Online
           Version: unspecified
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: LibreOffice
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: philippe at hemmel.fr

### Steps to reproduce

SMB external storage needed in a Nextcloud configuration, with Collabora Online
on the same server.

1. User A opens the document test.odt directly on the windows server or from a
network drive or from a UNC path, with LibreOffice. 
a `.~lock.test.odt#` file is created in the same folder.
2. User B opens the same document with Collabora Online from a SMB external
storage in Nextcloud, whatever the type of authentication used
3. User B modifies the document and save it (the document is still open by user
A with LibreOffice)

### Expected behaviour

User B should receive a error message because the document is locked on the
server and B can't save it

### Actual behaviour

B can save the document and exit Collabora Online without any warning, but all
the modifications made by B will be lost.

The admin_audit app logs "File updated" and then "File written", which is
false.

Not sure if it's a Collabora Online or Nextcloud bug, but as Nextcloud manages
the storage, I think that Nextcloud should do the job.
### Steps to reproduce

SMB external storage needed

1. User A opens the document test.odt directly on the windows server or from a
network drive or from a UNC path, with LibreOffice. 
a `.~lock.test.odt#` file is created in the same folder.
2. User B opens the same document with Collabora Online from a SMB external
storage in Nextcloud, whatever the type of authentication used
3. User B modifies the document and save it (the document is still open by user
A with LibreOffice)

### Expected behaviour

User B should receive a error message because the document is locked on the
server and B can't save it

### Actual behaviour

B can save the document and exit Collabora Online without any warning, but all
the modifications made by B will be lost.

The admin_audit app logs "File updated" and then "File written", which is
false.

Not sure if it's a Collabora Online or Nextcloud bug, but as Nextcloud manages
the storage, I think that Nextcloud should do the job.

So the bug is also created here :
https://github.com/nextcloud/server/issues/6804
And I create this one to follow up.

### General server configuration

**Operating system:** Linux 3.10.0-514.6.2.el7.x86_64 #1 SMP Thu Feb 23
03:04:39 UTC 2017 x86_64

**Web server:** Apache/2.4.6 (CentOS) OpenSSL/1.0.1e-fips mod_fcgid/2.3.9
PHP/7.1.5 (fpm-fcgi)

**Database:** mysql 5.5.52

**PHP version:** 7.1.5

**Nextcloud version:** 12.0.2 - 12.0.2.0

**LibreOffice Online version:** Collabora Online 2.1.3

**Windows server:** Windows server 2012 R2

**Are you using external storage, if yes which one:** 
    [0] => \OC\Files\Storage\Local
    [10] => \OCA\Files_External\Lib\Storage\SMB

**Are you using an external user-backend, if yes which one:** 
OpenLdap + Active Directory

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