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Correctly quote nu.exe and nu.ico path containing spaces in WiX (#15881)

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# Description

This PR improves the installation process of Nushell's Windows Terminal
Profile by adding proper quoting when refilling the path to `nu.exe` and
`nu.ico`.

**Crossref:**
https://github.com/microsoft/terminal/issues/6082#issuecomment-1001226003

**Affected lines:**


222c307648/wix/main.wxs (L278-L282)

Currently, when any part of the installation path of `nu.exe` contains
spaces, the auto-generated profile would contain a truncated path due to
improper quoting. At best, this would cause failures when launching the
profile. At worst, this could lead to executable hijacks.

Assume this default-generated profile with the username "Mantle Bao":

```json
{
  "profiles": [
    {
      "guid": "{47302f9c-1ac4-566c-aa3e-8cf29889d6ab}",
      "name": "Nushell",
      "commandline": "C:\\Users\\Mantle Bao\\AppData\\Local\\Programs\\nu\\bin\\nu.exe",
      "icon": "C:\\Users\\Mantle Bao\\AppData\\Local\\Programs\\nu\\nu.ico",
      "startingDirectory": "%USERPROFILE%"
    }
  ]
}
```

And a file named "Mantle" exists under `C:\Users\`:

```nushell
> sudo nu -c `touch C:\Users\Mantle`
> ls `C:\Users\` | find "Mantle" | select name type
╭───┬─────────────────────────────────────────────────┬──────╮
│ # │                      name                       │ type │
├───┼─────────────────────────────────────────────────┼──────┤
│ 0 │ C:\Users\Mantle                                 │ file │
│ 1 │ C:\Users\Mantle Bao                             │ dir  │
╰───┴─────────────────────────────────────────────────┴──────╯
>
```

Launching this profile produces this error in Windows Terminal
1.22.11141.0:

```plain-text
[error 2147942593 (0x800700c1) when launching `C:\Users\Mantle Bao\AppData\Local\Programs\nu\bin\nu.exe']
```

![Error 0x800700c1 pops up when launching the
profile](https://github.com/user-attachments/assets/7cb0d175-299c-4fb0-aa43-2185675e12ae)

[Looking
up](https://learn.microsoft.com/en-us/windows/win32/debug/system-error-code-lookup-tool)
this error code would yield its name as `ERROR_BAD_EXE_FORMAT`, since
the Windows shell will try to execute `C:\\Users\\Mantle` but not the
actual `nu.exe`.

## Hijacking PoC

![Running
Calc](https://github.com/user-attachments/assets/a7ab9ea4-680b-441f-8a7f-26eaad1b7942)

# User-Facing Changes

None. It should only affect the installation phase without any
user-facing changes.

# Tests + Formatting

This PR does not modify Rust or Nu code, and all its improvements belong
to the packaging system. Thus, no conventional tests or formatting
apply. But in case there exists preferred ways to test the packaging
process, please inform me of those, and I would make appropriate
changes.

# After Submitting

None. It should only affect the installation phase without any
post-submission edits.
This commit is contained in:
Rong "Mantle" Bao 2025-06-04 03:38:42 +08:00 committed by GitHub
parent e7d2717424
commit c7e10c3c57
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1 changed files with 1 additions and 1 deletions
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wix/main.wxs
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@ -278,7 +278,7 @@
<SetProperty Id="ReplacePathsInWindowsTerminalProfile"
Sequence="execute"
After="CostFinalize"
Value="&quot;[#nu.exe]&quot; -c &quot;let doc = (open `[#WindowsTerminalProfileFile]` | update profiles.commandline `[#nu.exe]` | update profiles.icon `[#nu.ico]`); $doc | save -f `[#WindowsTerminalProfileFile]`&quot;"
Value="&quot;[#nu.exe]&quot; -c &quot;let doc = (open `[#WindowsTerminalProfileFile]` | update profiles.commandline `\&quot;[#nu.exe]\&quot;` | update profiles.icon `\&quot;[#nu.ico]\&quot;`); $doc | save -f `[#WindowsTerminalProfileFile]`&quot;"
Condition="&amp;WindowsTerminalProfileFeature=3" />
<!-- Defines the custom action that updates paths in the Windows Terminal profile JSON file -->