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Item5222: When a web is renamed/moved, the tags aren't updated

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AppliesTo: Component: Priority: CurrentState: WaitingFor: TargetRelease ReleasedIn
Extension TagMePlugin Normal Closed   n/a  

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If you add tags to a topic, a corresponding file is created inside pub/_work_areas/TagMePlugin (_tags_WEB.TOPIC.txt). When you rename or move a topic, the tags file is correctly renamed. But if you rename or move a web, its tags are not updated.

After that, if you search for a tag that existed inside that web, you get inconsistent results.

-- TWiki:Main/GuilhermeGarnier - 08 Jan 2008

I found a solution for this bug. The plugin has to implement afterRenameHandler to know when a web is renamed/moved.

After implementing this function, I got an error message when trying to rename a web: "Insecure dependency in unlink while running with -T switch at ...". I found here that -T (taint) is a Perl parameter used to enforce security. When it's used, Perl don't let you call unlink (and other potentially dangerous functions) with parameters got from command line or get/post forms.

The solution I found for that, as recommended on the above link, is to use a regular expression to "untaint" the parameters. It worked, but it doesn't let you have characters other than alphanumerics, "_", "-" and "@" on the parameters. I think that's fine, as it's a topic name, but is there any other character allowed on topic names that isn't listed here? Also I think "@" isn't needed for that, right?

I'm attaching a patch to the current version of the plugin. Please test to see if there is any problem with it.

-- TWiki:Main.GuilhermeGarnier - 09 Jan 2008

As a sidenote: please observe that there are regular expressions defined in TWiki to match web and/or topic names, that you can probably use to untaint properly. See TWiki.TWikiFuncDotPm#get_RegularExpression_name_expr for more.

-- TWiki:Main.KoenMartens - 24 Apr 2008

Summary When a web is renamed/moved, the tags aren't updated
ReportedBy TWiki:Main.GuilhermeGarnier
Codebase 4.1.2
SVN Range TWiki-4.3.0, Sun, 30 Dec 2007, build 16120
AppliesTo Extension
Component TagMePlugin
Priority Normal
CurrentState Closed


TargetRelease n/a

Topic attachments
I Attachment History Action Size Date Who Comment
Unknown file formatpatch TagMePlugin.pm.patch r1 manage 1.6 K 2008-01-09 - 20:30 UnknownUser Patch to correct the bug
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Topic revision: r5 - 2013-09-29 - PeterThoeny
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