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From "Christopher Currens (Commented) (JIRA)" <j...@apache.org>
Subject [Lucene.Net] [jira] [Commented] (LUCENENET-454) MSBuild may wipe entire root drive if bad parameters are passed to build.targets
Date Sun, 06 Nov 2011 02:06:51 GMT

    [ https://issues.apache.org/jira/browse/LUCENENET-454?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13144887#comment-13144887
] 

Christopher Currens commented on LUCENENET-454:
-----------------------------------------------

I should add that this bug was actually found when trying to run the Build.cmd script, which
would accidentally pass "all" (with quotes) to to the "Area" property that MSBuild would expect.
 This caused the above behavior when no project was imported that defined "ArtifactsFolder"
 However, this bug extends past this, since a bad area can easily be typed by mistake into
a command window.
                
> MSBuild may wipe entire root drive if bad parameters are passed to build.targets
> --------------------------------------------------------------------------------
>
>                 Key: LUCENENET-454
>                 URL: https://issues.apache.org/jira/browse/LUCENENET-454
>             Project: Lucene.Net
>          Issue Type: Bug
>          Components: Build Automation
>            Reporter: Christopher Currens
>            Priority: Critical
>
> If the Area variable is passed to MSBuild and includes quotes or doesn't match a valid
target area, MSBuild populates the "CleanFiles" ItemGroup with every file on the local harddrive.
 When the clean step is run, all files on the drive will be deleted!
> This can be reproduced with the following command (I do not recommend reproducing this
unless you've taken precautions to protect your data).
> MSBuild.exe build.targets /t:all /p:Area=invalidareaname
> The causes "ArtifactsFolder" to never be populated.  "CleanFiles" then gathers a list
of files from "\**\*.*" instead of "valid\path\**\*.*" which, at least on windows computers,
evaluates out to "D:\**\*.*", or all files on my local hard drive.
> One solution would be to force MSBuild to throw an error if "ArtifactsFolder" is empty
during the clean target.  In fact, we should make a note to check every place we're calling
the Delete task, and make sure we do sanity checks on the variables involved in gathering
the files to delete.
> I'm testing a fix for it right now, and if it seems to work, I'll be committing it tonight.

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