added Install-SystemFont

Tools.ps1

@@ -1126,6 +1126,185 @@ Function Create-NetworkDrive {
     catch { Write-Verbose "Could not set volume label (possibly unsupported context)." }
 }
 
+function Install-SystemFont {
+    [CmdletBinding(SupportsShouldProcess=$true)]
+    param (
+        [Parameter(Mandatory=$true)]
+        [ValidateNotNullOrEmpty()]
+        [string]$FontPath
+    )
+
+    try {
+        $fontFile = Get-Item -LiteralPath $FontPath -ErrorAction Stop
+    }
+    catch {
+        Write-Error "Font file '$FontPath' could not be found or accessed: $($_.Exception.Message)"
+        return
+    }
+
+    if ($fontFile.PSIsContainer) {
+        Write-Error "Font path '$FontPath' points to a directory. Specify a .otf or .ttf file."
+        return
+    }
+
+    $extension = $fontFile.Extension.ToLowerInvariant()
+    if ($extension -notin @('.otf', '.ttf')) {
+        Write-Error "Only .otf and .ttf font files are supported."
+        return
+    }
+
+    # Read the font's embedded family and face names instead of relying on
+    # language- and Windows-version-dependent Shell property column numbers.
+    try {
+        Add-Type -AssemblyName PresentationCore -ErrorAction Stop
+        $glyphTypeface = New-Object System.Windows.Media.GlyphTypeface ([Uri]$fontFile.FullName)
+        $englishLanguage = [System.Globalization.CultureInfo]::GetCultureInfo('en-US')
+        $fontFamily = $null
+        $fontFace = $null
+
+        if (-not $glyphTypeface.FamilyNames.TryGetValue($englishLanguage, [ref]$fontFamily)) {
+            $fontFamily = $glyphTypeface.FamilyNames.Values | Select-Object -First 1
+        }
+        if (-not $glyphTypeface.FaceNames.TryGetValue($englishLanguage, [ref]$fontFace)) {
+            $fontFace = $glyphTypeface.FaceNames.Values | Select-Object -First 1
+        }
+
+        if ([string]::IsNullOrWhiteSpace($fontFamily)) {
+            throw "The font does not contain a readable family name."
+        }
+
+        if ([string]::IsNullOrWhiteSpace($fontFace) -or $fontFace -in @('Normal', 'Regular')) {
+            $fontName = $fontFamily
+        }
+        else {
+            $fontName = "$fontFamily $fontFace"
+        }
+    }
+    catch {
+        Write-Error "Font metadata could not be read from '$($fontFile.FullName)': $($_.Exception.Message)"
+        return
+    }
+
+    $fileName = $fontFile.Name
+    $fontsDirectory = Join-Path $env:SystemRoot 'Fonts'
+    $destinationPath = Join-Path $fontsDirectory $fileName
+    $registryValueName = if ($extension -eq '.otf') {
+        "$fontName (OpenType)"
+    }
+    else {
+        "$fontName (TrueType)"
+    }
+
+    try {
+        if (-not ('Emberkom.NativeFontMethods' -as [type])) {
+            Add-Type -TypeDefinition @'
+using System;
+using System.Runtime.InteropServices;
+
+namespace Emberkom
+{
+    public static class NativeFontMethods
+    {
+        [DllImport("gdi32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
+        public static extern int AddFontResource(string fileName);
+
+        [DllImport("user32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
+        public static extern IntPtr SendMessageTimeout(
+            IntPtr windowHandle,
+            uint message,
+            UIntPtr wParam,
+            IntPtr lParam,
+            uint flags,
+            uint timeout,
+            out UIntPtr result
+        );
+    }
+}
+'@ -ErrorAction Stop
+        }
+    }
+    catch {
+        Write-Error "Windows font installation support could not be initialized: $($_.Exception.Message)"
+        return
+    }
+
+    if (-not $PSCmdlet.ShouldProcess($destinationPath, "Install system font '$fontName'")) {
+        return
+    }
+
+    try {
+        $copyRequired = $true
+        if (Test-Path -LiteralPath $destinationPath) {
+            $sourceHash = (Get-FileHash -LiteralPath $fontFile.FullName -Algorithm SHA256 -ErrorAction Stop).Hash
+            $destinationHash = (Get-FileHash -LiteralPath $destinationPath -Algorithm SHA256 -ErrorAction Stop).Hash
+            $copyRequired = $sourceHash -ne $destinationHash
+
+            if (-not $copyRequired) {
+                Write-Output "Font file '$fileName' is already present in '$fontsDirectory'."
+            }
+        }
+
+        if ($copyRequired) {
+            Copy-Item -LiteralPath $fontFile.FullName -Destination $destinationPath -Force -ErrorAction Stop
+            Write-Output "Copied font file '$fileName' to '$fontsDirectory'."
+        }
+
+        $fontRegistryKey = [Microsoft.Win32.Registry]::LocalMachine.OpenSubKey(
+            'SOFTWARE\Microsoft\Windows NT\CurrentVersion\Fonts',
+            $true
+        )
+        if ($null -eq $fontRegistryKey) {
+            throw "The system Fonts registry key could not be opened for writing."
+        }
+
+        try {
+            $fontRegistryKey.SetValue(
+                $registryValueName,
+                $fileName,
+                [Microsoft.Win32.RegistryValueKind]::String
+            )
+        }
+        finally {
+            $fontRegistryKey.Dispose()
+        }
+        Write-Output "Registered '$registryValueName' as a system font."
+
+        $fontsAdded = [Emberkom.NativeFontMethods]::AddFontResource($destinationPath)
+        if ($fontsAdded -eq 0) {
+            throw "Windows did not load '$destinationPath' into the current session."
+        }
+        Write-Output "Loaded '$fontName' into the current Windows session."
+
+        # Notify applications in this session without allowing a hung window to
+        # block an unattended RMM script indefinitely.
+        $broadcastHandle = [IntPtr]0xffff
+        $fontChangeMessage = 0x001D
+        $abortIfHung = 0x0002
+        $messageResult = [UIntPtr]::Zero
+        $notificationSent = [Emberkom.NativeFontMethods]::SendMessageTimeout(
+            $broadcastHandle,
+            $fontChangeMessage,
+            [UIntPtr]::Zero,
+            [IntPtr]::Zero,
+            $abortIfHung,
+            1000,
+            [ref]$messageResult
+        )
+
+        if ($notificationSent -eq [IntPtr]::Zero) {
+            Write-Output "Installed system font '$fontName', but no application acknowledged the font-change notification."
+            return
+        }
+
+        Write-Output "Installed system font '$fontName' successfully."
+    }
+    catch {
+        Write-Error "Failed to install font '$($fontFile.FullName)': $($_.Exception.Message)"
+    }
+}
+# Usage Example:
+# Install-SystemFont -FontPath "C:\Path\To\YourFont.otf"
+
 # Function to import the Syncro Module
 Function Import-RMMModule () {
     Try { Import-Module $env:SyncroModule -WarningAction SilentlyContinue -ErrorAction Stop }
@@ -1244,4 +1423,4 @@ If ( $TimeAttributedToUser ) {
 # Check the RMM runtime variable to see if a ticket number was specified, if so then set the $TicketID
 If ( $TicketNumber ) {
     If ( $TicketNumber.Trim().Length -gt 1 ) { $Global:TicketNumber = $TicketNumber.Trim() }
-}
+}