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Fix Export-PSSession to not throw error when a rooted path is specified for -OutputModule#17671

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daxian-dbw merged 3 commits into
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Jul 13, 2022
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Fix Export-PSSession to not throw error when a rooted path is specified for -OutputModule#17671
daxian-dbw merged 3 commits into
PowerShell:masterPowerShell/PowerShell:masterfrom
daxian-dbw:usewindowsdaxian-dbw/PowerShell:usewindowsCopy head branch name to clipboard

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@daxian-dbw

@daxian-dbw daxian-dbw commented Jul 13, 2022

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PR Summary

The 7.0.10 release contains a commit for a potential security issue: 38e55e1. Here is the announcement about it: PowerShell/Announcements#31.

This particular change from that commit caused a regression in Azure Function when running Import-Module <module-name> -UseWindowsPowerShell, where the user's module path doesn't exist. That command worked fine with the PowerShell 7.0.9 SDK but started to fail with the PowerShell 7.0.11 SDK.

The root cause is that when Export-PSSession is used by Import-Module -UseWindowsPowerShell, a rooted path is always specified to the -OutputModule parameter, so it doesn't matter whether the user's module path exists or not because it doesn't need it to identify the directory to use.

The fix is to use the specified rooted path directly. Actually, Path.Combine(path1, path2) will return path2 if it's rooted.
The error message is also updated:

image

PR Checklist

@daxian-dbw daxian-dbw requested a review from SteveL-MSFT July 13, 2022 01:04
@daxian-dbw daxian-dbw requested a review from anmenaga July 13, 2022 01:05
@daxian-dbw daxian-dbw added the CL-General Indicates that a PR should be marked as a general cmdlet change in the Change Log label Jul 13, 2022
SteveL-MSFT
SteveL-MSFT reviewed Jul 13, 2022
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Comment thread src/System.Management.Automation/utils/PathUtils.cs
PaulHigin
PaulHigin suggested changes Jul 13, 2022
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Comment thread src/System.Management.Automation/utils/PathUtils.cs
@ghost ghost added Waiting on Author The PR was reviewed and requires changes or comments from the author before being accept and removed Waiting on Author The PR was reviewed and requires changes or comments from the author before being accept labels Jul 13, 2022
adityapatwardhan
adityapatwardhan reviewed Jul 13, 2022
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Comment thread src/System.Management.Automation/utils/PathUtils.cs Outdated
@daxian-dbw @adityapatwardhan
Update src/System.Management.Automation/utils/PathUtils.cs
0610f43 
Co-authored-by: Aditya Patwardhan <adityap@microsoft.com>
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This PR has 26 quantified lines of changes. In general, a change size of upto 200 lines is ideal for the best PR experience!

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Label      : Extra Small
Size       : +15 -11
Percentile : 10.4%

Total files changed: 2

Change summary by file extension:
.resx : +1 -1
.cs : +14 -10

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@daxian-dbw daxian-dbw merged commit f9d424d into PowerShell:master Jul 13, 2022
@daxian-dbw daxian-dbw deleted the usewindows branch July 13, 2022 20:32
@iSazonov

iSazonov commented Jul 14, 2022 •
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It makes sense for PowerShell Committee to review OutModule parameter. I think the case is the same as #3174 (#11701) - OutModule parameter should be LiteralPath. If so we could simplify CreateModuleDirectory() method.

@Francisco-Gamino Francisco-Gamino mentioned this pull request Jul 14, 2022
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@ghost

ghost commented Jul 18, 2022

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🎉v7.3.0-preview.6 has been released which incorporates this pull request.:tada:

Handy links:

@adityapatwardhan

adityapatwardhan commented Aug 2, 2022

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/backport release/v7.2.6

@adityapatwardhan

adityapatwardhan commented Aug 2, 2022

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/backport to release/v7.0.12

@github-actions

github-actions Bot commented Aug 2, 2022 •
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Started backporting to release/v7.0.12: https://github.com/PowerShell/PowerShell/actions/runs/2784794011

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@adityapatwardhan

adityapatwardhan commented Aug 2, 2022

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/backport to release/v7.2.6

@github-actions

github-actions Bot commented Aug 2, 2022

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@adityapatwardhan backporting to release/v7.0.12 failed, the patch most likely resulted in conflicts:

$ git am --3way --ignore-whitespace --keep-non-patch changes.patch

Applying: Fix Export-PSSession to not throw error when a rooted path is specified for -OutputModule
Applying: Update comment
error: sha1 information is lacking or useless (src/System.Management.Automation/utils/PathUtils.cs).
error: could not build fake ancestor
hint: Use 'git am --show-current-patch=diff' to see the failed patch
Patch failed at 0002 Update comment
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".
Error: The process '/usr/bin/git' failed with exit code 128

Please backport manually!

@github-actions

github-actions Bot commented Aug 2, 2022 •
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Started backporting to release/v7.2.6: https://github.com/PowerShell/PowerShell/actions/runs/2784796745

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PowerShell for every system! Contribute to PowerShell/PowerShell development by creating an account on GitHub.

@github-actions github-actions Bot mentioned this pull request Aug 2, 2022
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@ghost

ghost commented Aug 11, 2022

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🎉v7.0.12 has been released which incorporates this pull request.:tada:

Handy links:

@ghost

ghost commented Aug 11, 2022

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🎉v7.2.6 has been released which incorporates this pull request.:tada:

Handy links:

@TravisEz13 TravisEz13 mentioned this pull request Sep 30, 2022
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@daxian-dbw daxian-dbw mentioned this pull request May 8, 2023
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@TravisEz13 TravisEz13 TravisEz13 approved these changes

@SteveL-MSFT SteveL-MSFT SteveL-MSFT approved these changes

@adityapatwardhan adityapatwardhan adityapatwardhan approved these changes

@anmenaga anmenaga Awaiting requested review from anmenaga

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@PaulHigin PaulHigin PaulHigin approved these changes

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