PowerShell, search for specific URL parts in .url files

Question

Building on the code from this answer, I tried this to find all .url files which include http://kfhntwvap347, but I also tried http://kfhntwvap347:8080/consense/ in $urlParts knowing that there is such a .url file, but it always shows no results.

The intent is to find such URL and then to replace it.

# The literal URL parts to find, either prefixes or substrings.
$urlParts = 'http://kfhntwvap347'

$regex = '^URL=({0})' -f (
  $urlParts.ForEach({ 
    $escaped = [regex]::Escape($_) # Escape for literal matching, if needed.
    if ($escaped -match '^https?:') { $escaped } 
    else                            { '.*' + $escaped } # match anywhere in the URL
  }) -join '|'
)

# Search all *.url files in the subtree of D:\waveprod\DMS for the URL parts
# and output the full paths of matching files.
# Outputs to the screen and saves to a file.

$foundPaths = Get-ChildItem -Force -Recurse D:\waveprod\DMS -Filter *.url | 
  Select-String -Pattern $regex -List | 
  ForEach-Object {
    $path = $_.Path
    Write-Output $path
    $path
  }

# Display a message based on whether results were found or not
if ($foundPaths.Count -gt 0) {
  Write-Host "Results found!"
} else {
  Write-Host "No results found."
}

# Save the found paths to a text file in D:\powershell\
$foundPaths | Out-File -FilePath 'D:\powershell\found_paths.txt'

I would expect that it finds such files but I tried many variations without success.

With $urlParts = 'http://kfhntwvap347', the code does match a .url file with the content shown in your screenshot in my tests. Please try to provide a minimal reproducible example. — mklement0
– mklement0, Commented Jan 28, 2024 at 23:22
just checked it again, it is PSVersion 5.1.143 Desktop from PowerShell. Strange that it does not find anything — Matthias Puchta
– Matthias Puchta, Commented Jan 29, 2024 at 1:40
Like mklement0, I also tested your code and successfully found the URL file, so I don't have a solution but wanted to point out a couple minor improvements to your code. In your regex if statement, you're checking if it matches ^http?:'. This regex matches either http: or htt:. I'm assuming what you want is ^https?:, which matches http: or https:. Also in your ForEach loop you output the $path twice and also assigning $_.path to $path is unnecessary, just use this: ForEach-Object { $_.path } — jeremywat
– jeremywat, Commented Jan 29, 2024 at 5:56
Good catch, @jeremywat, and good points. I've fixed the ^http?: part to avoid confusion: It was simply a copy-paste error from the linked answer. — mklement0
– mklement0, Commented Jan 29, 2024 at 14:00
@iRon: That is good advice in general, but wouldn't really help here (except perhaps to use (New-Object -ComObject WScript.Shell).CreateShortcut("d:\path\to\some.url").TargetPath to more robustly extract the URL string). The linked post (to which this question is a follow-up) makes the use case clearer: matching one of multiple arbitrary URL prefixes and substrings, for which text processing is the right approach, and regexes allow for the most concise implementation. — mklement0
– mklement0, Commented Jan 29, 2024 at 14:11

Dennis · Accepted Answer · 2024-02-07 23:08:30Z

I find using type casting (if available) will help when working with some type of complex objects.

C:\> [uri]'http://kfhntwvap347:8080/consense/'


AbsolutePath   : /consense/
AbsoluteUri    : http://kfhntwvap347:8080/consense/
LocalPath      : /consense/
Authority      : kfhntwvap347:8080
HostNameType   : Dns
IsDefaultPort  : False
IsFile         : False
IsLoopback     : False
PathAndQuery   : /consense/
Segments       : {/, consense/}
IsUnc          : False
Host           : kfhntwvap347
Port           : 8080
Query          :
Fragment       :
Scheme         : http
OriginalString : http://kfhntwvap347:8080/consense/
DnsSafeHost    : kfhntwvap347
IdnHost        : kfhntwvap347
IsAbsoluteUri  : True
UserEscaped    : False
UserInfo       :

So by comparing the property Authority with Host (in this case filtering), you can easily tell if the URL-file needs to be handled.

[uri]'http://kfhntwvap347:8080/consense/',
[uri]'http://kfhntwvap347/consense/' |
  where {$_.Host -ne $_.Authority} |
    select AbsoluteUri

AbsoluteUri
-----------
http://kfhntwvap347:8080/consense/

In this case we also need a good way to handle ini-files. PsIni from PSGallery is a good bet.

Install-Module PsIni

Get-ChildItem .\*.url | select Name,
  @{ l = 'URI'; e = {[uri](Get-IniContent $_).InternetShortcut.Url} } |
    where {$_.URI.Host -ne $_.URI.Authority}

Edit: I didn't notice the property IsDefaultPort before which makes to selection even easier.

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