mirror of https://github.com/chylex/Blog.git
137 lines
4.6 KiB
PowerShell
137 lines
4.6 KiB
PowerShell
[CmdletBinding()]
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Param(
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[Parameter(Mandatory = $true, Position = 0)]
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[System.IO.FileInfo] $FirefoxFolder
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)
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$ErrorActionPreference = "Stop"
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if (-Not (Test-Path -Path $FirefoxFolder -PathType Container)){
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throw "Folder does not exist."
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}
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$OmniJa = Join-Path -Path $FirefoxFolder -ChildPath "omni.ja"
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$OmniJaOld = "$OmniJa.old"
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if (-Not (Test-Path -Path $OmniJa -PathType Leaf)){
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throw "File 'omni.ja' was not found in the folder."
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}
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function Apply-Patch {
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Param(
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[Parameter(Mandatory = $true, Position = 0)]
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[Byte[]] $Data,
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[Parameter(Mandatory = $true, Position = 1)]
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[Byte[]] $Search,
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[Parameter(Mandatory = $true, Position = 2)]
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[Byte[]] $Replace
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)
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$Occurrences = 0
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$SearchLength = $Search.Length
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$CheckLength = $Data.Length - $SearchLength
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for($i = 0; $i -lt $CheckLength; $i++){
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if ($Data[$i] -ne $Search[0]){
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continue
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}
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$Matches = $true
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for($o = 1; $o -lt $SearchLength; $o++){
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if ($Data[$i + $o] -ne $Search[$o]){
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$Matches = $false
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break
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}
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}
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if ($Matches){
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for($o = 0; $o -lt $Replace.Length; $o++){
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$Data[$i + $o] = $Replace[$o]
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}
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$i += $Replace.Length
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$Occurrences++
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}
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}
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return $Occurrences
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}
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Write-Host ""
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Write-Host "Patching omni.ja..."
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Write-Host ""
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[Byte[]] $Data = [System.IO.File]::ReadAllBytes($OmniJa)
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$Occurrences = 0
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$BytesSearch1 = [Byte[]](
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0x74, 0x68, 0x69, 0x73, 0x2E, 0x6D, 0x4C, 0x61, 0x75, 0x6E, 0x63, 0x68, 0x65, 0x72, 0x2E, 0x74, # this.mLauncher.t
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0x61, 0x72, 0x67, 0x65, 0x74, 0x46, 0x69, 0x6C, 0x65, 0x49, 0x73, 0x45, 0x78, 0x65, 0x63, 0x75, # argetFileIsExecu
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0x74, 0x61, 0x62, 0x6C, 0x65 # table
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)
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$BytesReplace1 = [Byte[]](
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0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, #
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0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, #
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0x66, 0x61, 0x6C, 0x73, 0x65 # false
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)
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$Attempt = Apply-Patch $Data $BytesSearch1 $BytesReplace1
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$Occurrences += $Attempt
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if ($Attempt -eq 1){ # most likely the occurrence added by second patch
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Write-Host "It appears this installation is already patched."
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exit
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}
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if ($Attempt -eq 0){
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Write-Host "Found nothing to patch."
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exit
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}
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$BytesSearch2a = [Byte[]](
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0x0A, 0x20, 0x20, 0x20, 0x20, 0x29, 0x20, 0x7B, 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x2F, # \n ){\n /
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0x2F, 0x20, 0x4F, 0x70, 0x65, 0x6E, 0x20, 0x28, 0x75, 0x73, 0x69, 0x6E, 0x67, 0x20, 0x73, 0x79, # / Open (using sy
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0x73, 0x74, 0x65, 0x6D, 0x20, 0x64, 0x65, 0x66, 0x61, 0x75, 0x6C # stem defaul
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)
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$BytesReplace2a = [Byte[]](
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0x7C, 0x7C, 0x74, 0x68, 0x69, 0x73, 0x2E, 0x6D, 0x4C, 0x61, 0x75, 0x6E, 0x63, 0x68, 0x65, 0x72, # ||this.mLauncher
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0x2E, 0x74, 0x61, 0x72, 0x67, 0x65, 0x74, 0x46, 0x69, 0x6C, 0x65, 0x49, 0x73, 0x45, 0x78, 0x65, # .targetFileIsExe
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0x63, 0x75, 0x74, 0x61, 0x62, 0x6C, 0x65, 0x29, 0x7B, 0x2F, 0x2F # cutable){//
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)
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$BytesSearch2b = [Byte[]](
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0x29, 0x20, 0x7B, 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x2F, 0x2F, 0x20, 0x4F, 0x70, 0x65, # ) {\n // Ope
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0x6E, 0x20, 0x28, 0x75, 0x73, 0x69, 0x6E, 0x67, 0x20, 0x73, 0x79, 0x73, 0x74, 0x65, 0x6D, 0x20, # n (using system
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0x64, 0x65, 0x66, 0x61, 0x75, 0x6C, 0x74, 0x29, 0x2E # default).
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)
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$BytesReplace2b = [Byte[]](
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0x7C, 0x7C, 0x74, 0x68, 0x69, 0x73, 0x2E, 0x6D, 0x4C, 0x61, 0x75, 0x6E, 0x63, 0x68, 0x65, 0x72, # ||this.mLauncher
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0x2E, 0x74, 0x61, 0x72, 0x67, 0x65, 0x74, 0x46, 0x69, 0x6C, 0x65, 0x49, 0x73, 0x45, 0x78, 0x65, # .targetFileIsExe
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0x63, 0x75, 0x74, 0x61, 0x62, 0x6C, 0x65, 0x29, 0x7B # cutable){
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)
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$Attempt = Apply-Patch $Data $BytesSearch2a $BytesReplace2a
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if ($Attempt -eq 0){ # older versions
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$Attempt = Apply-Patch $Data $BytesSearch2b $BytesReplace2b
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}
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$Occurrences += $Attempt
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if ($Occurrences -gt 0){
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Move-Item -Path $OmniJa -Destination $OmniJaOld -Force
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[System.IO.File]::WriteAllBytes($OmniJa, $Data)
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Write-Host "Applied $Occurrences patches."
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Write-Host "Delete 'compatibility.ini' from your Firefox profile folder to regenerate the download dialog."
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Write-Host "The original 'omni.ja' file is backed up as 'omni.ja.old'."
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}
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else{
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Write-Host "Found nothing to patch."
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}
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