mirror of
https://github.com/Abdess/retroarch_system.git
synced 2026-10-10 21:43:23 -05:00
Abdessamad Derraz
185cf47bbc
Every other manifest field was treated as hostile input, but standalone_copies targets were only length-checked before being expanded and written to: a traversal component or a symlink already sitting at the destination sent the copy outside the directory the user opted into. Targets are now validated like the other paths and a symlinked destination is never followed. RETROBIOS_BASE_URL serves the manifest and the files it declares, so it now has to be HTTPS the way both bootstraps already require of the installer URL; loopback stays open for the end-to-end tests. install.ps1 left TLS at the Windows PowerShell 5.1 default, which GitHub refuses, so the download failed before any hash was checked. check_local read every file once per declared digest, single threaded. One read now feeds both, across the same pool the downloads use. RetroPie had no manifest, so the one-line installer answered 'unknown platform' for a frontend whose packs do ship.
71 lines
3.3 KiB
PowerShell
71 lines
3.3 KiB
PowerShell
# One-line bootstrap and local wrapper. The downloaded installer is accepted
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# only when it matches the SHA-256 embedded in this wrapper.
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[CmdletBinding()]
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param(
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[Parameter(ValueFromRemainingArguments = $true)]
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[string[]]$InstallerArguments
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)
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$ErrorActionPreference = "Stop"
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$defaultInstallUrl = "https://raw.githubusercontent.com/Abdess/retrobios/main/install.py"
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$defaultInstallSha256 = "b83e7422b8516d666017964cf18fc9ef8c4f8bbdb6a594ed9da0c04158eff870"
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$maximumInstallerBytes = 2MB
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$installer = if ($PSScriptRoot) { Join-Path $PSScriptRoot "install.py" } else { $null }
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$temporary = $null
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try {
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if (-not $installer -or -not (Test-Path -LiteralPath $installer -PathType Leaf)) {
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$url = if ($env:RETROBIOS_INSTALL_URL) { $env:RETROBIOS_INSTALL_URL } else { $defaultInstallUrl }
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$expected = if ($env:RETROBIOS_INSTALL_SHA256) { $env:RETROBIOS_INSTALL_SHA256 } else { $defaultInstallSha256 }
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$uri = [Uri]$url
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if ($uri.Scheme -ne "https") {
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throw "RETROBIOS_INSTALL_URL must use HTTPS."
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}
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if ($expected -notmatch '^[0-9a-fA-F]{64}$') {
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throw "Installer SHA-256 must contain exactly 64 hexadecimal characters."
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}
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# Windows PowerShell 5.1 still negotiates SSL 3.0 / TLS 1.0 by default
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# and GitHub refuses both, so the download fails before any hash is
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# checked. install.sh pins the same floor with curl --tlsv1.2.
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if ($PSVersionTable.PSEdition -ne "Core") {
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[Net.ServicePointManager]::SecurityProtocol = `
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[Net.ServicePointManager]::SecurityProtocol -bor [Net.SecurityProtocolType]::Tls12
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}
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$temporary = Join-Path ([IO.Path]::GetTempPath()) ("retrobios-install-{0}.py" -f [Guid]::NewGuid())
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Invoke-WebRequest -Uri $uri -OutFile $temporary -UseBasicParsing
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if ((Get-Item -LiteralPath $temporary).Length -gt $maximumInstallerBytes) {
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throw "Downloaded installer exceeds the size limit."
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}
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$actual = (Get-FileHash -LiteralPath $temporary -Algorithm SHA256).Hash.ToLowerInvariant()
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if ($actual -ne $expected.ToLowerInvariant()) {
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throw "install.py SHA-256 mismatch."
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}
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$installer = $temporary
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}
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$python = Get-Command py -ErrorAction SilentlyContinue
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if ($python) {
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& $python.Source -3 -c "import sys; raise SystemExit(sys.version_info < (3, 8))"
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if ($LASTEXITCODE -ne 0) { throw "Python 3.8 or newer is required." }
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& $python.Source -3 $installer @InstallerArguments
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if ($LASTEXITCODE -ne 0) { throw "RetroBIOS installer failed with exit code $LASTEXITCODE." }
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return
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}
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$python = Get-Command python3 -ErrorAction SilentlyContinue
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if (-not $python) {
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$python = Get-Command python -ErrorAction SilentlyContinue
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}
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if (-not $python) {
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throw "Python 3.8 or newer is required."
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}
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& $python.Source -c "import sys; raise SystemExit(sys.version_info < (3, 8))"
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if ($LASTEXITCODE -ne 0) { throw "Python 3.8 or newer is required." }
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& $python.Source $installer @InstallerArguments
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if ($LASTEXITCODE -ne 0) { throw "RetroBIOS installer failed with exit code $LASTEXITCODE." }
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}
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finally {
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if ($temporary -and (Test-Path -LiteralPath $temporary)) {
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Remove-Item -LiteralPath $temporary -Force
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}
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}
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