Fix undefined class property access after upgrade from 19 to 20

[ChristophWurst]

The serialized data in 19 has one property less and this was not
considered in the code. Hence adding a fallback. Moreover I'm changing
the deserialization into an array instead of object, as that is the
safer option.

Fixes

Ref #21288

[lmamane]

I'm not sure I understand the issue, but I guess that some data (the session data?) is saved in some file or in the SQL database (that would be the "serialised data"), and the version saved by the stable19 branch populates the "creds" variable (via session->get('login_credentials')), and thus master has to be forwards-compatible to that, and be able to read the old data. Then the issue would be for sessions that were open in stable19, then one upgrades to master? Any fresh session opened in master would not show this issue?

[ChristophWurst]

I'm not sure I understand the issue, but I guess that some data (the session data?) is saved in some file or in the SQL database (that would be the "serialised data"), and the version saved by the stable19 branch populates the "creds" variable (via session->get('login_credentials')), and thus master has to be forwards-compatible to that, and be able to read the old data. Then the issue would be for sessions that were open in stable19, then one upgrades to master? Any fresh session opened in master would not show this issue?

Exactly :). See also my added unit test.

[faily-bot]

🤖 beep boop beep 🤖

Here are the logs for the failed build:

Status of 32754: failure

mariadb10.4-php7.3

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There were 2 warnings:

1) Test\Files\ViewTest::testRenameFailDeleteTargetKeepSource
Trying to configure method "writeStream" which cannot be configured because it does not exist, has not been specified, is final, or is static

2) Test\Files\ViewTest::testCopyFailDeleteTargetKeepSource
Trying to configure method "writeStream" which cannot be configured because it does not exist, has not been specified, is final, or is static

--

There was 1 failure:

1) Test\Files\Utils\ScannerTest::testPropagateEtag
Failed asserting that '5f5626bf00676' is not equal to '5f5626bf00676'.

/drone/src/tests/lib/Files/Utils/ScannerTest.php:192

acceptance-app-files-sharing

• tests/acceptance/features/app-files-sharing.feature:338

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  Scenario: sharee can revoke create permission from reshare after the sharer disabled it # /drone/src/tests/acceptance/features/app-files-sharing.feature:338
    Given I act as John                                                                   # ActorContext::iActAs()
    And I am logged in as the admin                                                       # LoginPageContext::iAmLoggedInAsTheAdmin()
    And I act as Jane                                                                     # ActorContext::iActAs()
    And I am logged in                                                                    # LoginPageContext::iAmLoggedIn()
    And I act as Jim                                                                      # ActorContext::iActAs()
    And I am logged in as "user1"                                                         # LoginPageContext::iAmLoggedInAs()
    And I act as John                                                                     # ActorContext::iActAs()
    And I create a new folder named "Shared folder"                                       # FileListContext::iCreateANewFolderNamed()
    And I see that the file list contains a file named "Shared folder"                    # FileListContext::iSeeThatTheFileListContainsAFileNamed()
    And I share "Shared folder" with "user0"                                              # FilesAppSharingContext::iShareWith()
    And I see that the file is shared with "user0"                                        # FilesAppSharingContext::iSeeThatTheFileIsSharedWith()
    And I act as Jane                                                                     # ActorContext::iActAs()
    And I open the Files app                                                              # FilesAppContext::iOpenTheFilesApp()
    And I share "Shared folder" with "user1"                                              # FilesAppSharingContext::iShareWith()
    And I see that the file is shared with "user1"                                        # FilesAppSharingContext::iSeeThatTheFileIsSharedWith()
    And I act as John                                                                     # ActorContext::iActAs()
    And I set the share with "user0" as not creatable                                     # FilesAppSharingContext::iSetTheShareWithAsNotCreatable()
    And I see that "user0" can not create in the share                                    # FilesAppSharingContext::iSeeThatCanNotCreateInTheShare()
    And I act as Jim                                                                      # ActorContext::iActAs()
    And I open the Files app                                                              # FilesAppContext::iOpenTheFilesApp()
    And I enter in the folder named "Shared folder"                                       # FileListContext::iEnterInTheFolderNamed()
    And I create a new folder named "Subfolder"                                           # FileListContext::iCreateANewFolderNamed()
    And I see that the file list contains a file named "Subfolder"                        # FileListContext::iSeeThatTheFileListContainsAFileNamed()
    When I act as Jane                                                                    # ActorContext::iActAs()
    And I open the Files app                                                              # FilesAppContext::iOpenTheFilesApp()
    And I open the details view for "Shared folder"                                       # FileListContext::iOpenTheDetailsViewFor()
    And I see that the details view is open                                               # FilesAppContext::iSeeThatTheDetailsViewIsOpen()
    And I open the "Sharing" tab in the details view                                      # FilesAppContext::iOpenTheTabInTheDetailsView()
    And I see that the "Sharing" tab in the details view is eventually loaded             # FilesAppContext::iSeeThatTheTabInTheDetailsViewIsEventuallyLoaded()
    And I set the share with "user1" as not creatable                                     # FilesAppSharingContext::iSetTheShareWithAsNotCreatable()
    Then I see that "user1" can not create in the share                                   # FilesAppSharingContext::iSeeThatCanNotCreateInTheShare()
    And I see that "user1" can not be allowed to create in the share                      # FilesAppSharingContext::iSeeThatCanNotBeAllowedToCreateInTheShare()
    And I act as Jim                                                                      # ActorContext::iActAs()
    And I open the Files app                                                              # FilesAppContext::iOpenTheFilesApp()
    And I enter in the folder named "Shared folder"                                       # FileListContext::iEnterInTheFolderNamed()
    And I see that it is not possible to create new files                                 # FileListContext::iSeeThatItIsNotPossibleToCreateNewFiles()
      Failed asserting that true is false.