自動爬蟲抓取最新版本OpenSSH並安裝

Install-OpenSSH.ps1

# 獲取最新版本OpenSSHUrl
function Get-OpenSSHAsset {
    param (
        [Parameter(Position = 0, ParameterSetName = "")]
        [ValidateSet(
            'OpenSSH-Win32.zip',
            'OpenSSH-Win64.zip',
            'OpenSSH-Win32.msi',
            'OpenSSH-Win64.msi'
        )]
        [string] $AssetName = 'OpenSSH-Win64.zip'
    )

    # 設定 API URL
    $url = "https://api.github.com/repos/PowerShell/Win32-OpenSSH/releases/latest"

    # 使用 Invoke-RestMethod 獲取 API 返回的資料
    $response = Invoke-RestMethod -Uri $url

    # 根據 $AssetName 參數調整過濾條件
    if ($AssetName -match ".msi$") {
        $filter = "^$($AssetName -replace ".msi$", "-v.*.msi")$"
    } elseif ($AssetName -match ".zip$") { $filter = "^$AssetName$" }

    # 從 assets 中尋找指定的文件名
    return $response.assets | Where-Object { $_.name -match $filter }
} # Get-OpenSSHAsset 'OpenSSH-Win64.zip'



# 安裝OpenSSH
function Install-OpenSSH {
    param (
        # 安裝路徑
        [Parameter(Position = 0, ParameterSetName = "")]
        [string] $Path = 'C:\Program Files',
        # 從線上下載
        [Parameter(ParameterSetName = "")]
        [switch] $IncludeServer,
        [switch] $OpenFirewall,
        [switch] $Force
    )
    [IO.Directory]::SetCurrentDirectory(((Get-Location -PSProvider FileSystem).ProviderPath))
    $Path = [IO.Path]::GetFullPath($Path)

    # 爬取最新版本的URL
    $asset = Get-OpenSSHAsset 'OpenSSH-Win64.zip'
    if ($asset) {
        $sshZipName = $asset.name
        $sshUrl     = $asset.browser_download_url
    } else {
        $sshZipName = 'OpenSSH-Win64.zip'
        $sshUrl     = 'https://github.com/PowerShell/Win32-OpenSSH/releases/download/v9.4.0.0p1-Beta/OpenSSH-Win64.zip'
    }

    # 檢查安裝目錄
    if ((Test-Path $Path) -and (Get-ChildItem -Path $Path) -and !$Force) {
        Write-Error "Directory '$Path' is not empty. Use the -Force option to force the installation." -ErrorAction Stop
    }

    # 下載Zip檔案
    $sshZipPath = Join-Path $env:TEMP $sshZipName
    (New-Object Net.WebClient).DownloadFile($sshUrl, $sshZipPath)

    # 解壓縮並安裝到目標位置
    [String] $sshbin = Join-Path $Path ([IO.Path]::GetFileNameWithoutExtension($sshZipName))
    Expand-Archive $sshZipPath $Path -Force -ErrorAction Stop
    if (Test-Path -Path $sshbin) {
        Move-Item -Path $sshbin\* -Destination $Path -ErrorAction Stop
        Remove-Item -Path $sshbin -Recurse -Force
        $sshbin = $Path
    }

    # 添加環境變數
    $currEnvPath = [Environment]::GetEnvironmentVariable("Path", 'Machine')
    if (-not $currEnvPath.Split(';').Contains($sshbin)) {
        $newEnvPath = $sshbin + ";" + $currEnvPath
        [Environment]::SetEnvironmentVariable("Path", $newEnvPath, 'Machine')
    } else {
        Write-Host "The path $sshbin is already in the system PATH variable." -ForegroundColor Green
    }; $env:Path = ([Environment]::GetEnvironmentVariable("Path", "Machine") + ";" + [Environment]::GetEnvironmentVariable("Path", "User"))

    # 驗證 SSH 是否被追加
    try { Get-Command ssh, sshd -EA 1; Write-Host "" } catch {
        Write-Error "Error:: The SSH command was not found, terminating the installation. The environment variable may not have been correctly added, or the path is incorrect" -ErrorAction Stop
    }

    # 安裝伺服器端
    if ($IncludeServer) {
        # 安裝sshd
        try {
            Get-Service sshd -ErrorAction Stop | Out-Null
            Write-Host "sshd service already exists. Skipping installation." -ForegroundColor Green
        } catch {
            $sshInstaller = Join-Path $sshbin 'install-sshd.ps1'
            Powershell.exe -ExecutionPolicy Bypass -File $sshInstaller
        }
        # 啟用sshd
        try {
            Start-Service sshd -ErrorAction Stop
            Set-Service sshd -StartupType 'Automatic'
        } catch {
            Write-Error "Failed to install or start the sshd service." -ErrorAction Stop
        }
        # 啟用防火牆
        if ($OpenFirewall) {
            if (!(Get-NetFirewallRule -Name "OpenSSH-Server-In-TCP" -ErrorAction SilentlyContinue | Select-Object Name, Enabled)) {
                Write-Host "Firewall Rule 'OpenSSH-Server-In-TCP' does not exist, creating it..."
                New-NetFirewallRule -Name 'OpenSSH-Server-In-TCP' -DisplayName 'OpenSSH Server (sshd)' -Enabled True -Direction Inbound -Protocol TCP -Action Allow -LocalPort 22
            } else {
                Write-Host "Firewall rule 'OpenSSH-Server-In-TCP' has been created and exists." -ForegroundColor DarkGreen
            }
        }
    }
} # Install-OpenSSH 'C:\Program Files\OpenSSH' -IncludeServer -OpenFirewall