WinSCP の .NET アセンブリを使用して FTPS ディレクトリ同期する PowerShell スクリプト

synchronize.ps1

<#
PowerShell: WinSCP を使って FTPS (explicit) で同期するスクリプト
#>

param(
  [string] $accountName = "{FTPアカウント}",
  [string] $HostName = "{FTPサーバ名}",
  [string] $LocalPath = (Join-Path $PSScriptRoot "site"),
  [string] $RemotePath = "/home/{FTPアカウント}/www",
  [string] $LogFile = (Join-Path $PSScriptRoot "log.txt")
)

# ----- WinSCP .NET アセンブリ読み込み -----
$assemblyPath = "C:\Program Files (x86)\WinSCP\WinSCPnet.dll"
if (-not (Test-Path $AssemblyPath)) { throw "WinSCPnet.dll not found: $AssemblyPath" }
Add-Type -Path $AssemblyPath

# ----- Credential 入力 -----
$pass = Read-Host "Enter password for $accountName" -AsSecureString  # パスワード入力を促す
$cred = New-Object System.Management.Automation.PSCredential($accountName, $pass)

# ----- セッションオプション設定 -----
$sessionOptions = New-Object WinSCP.SessionOptions -Property @{
  Protocol = [WinSCP.Protocol]::Ftp
  HostName = $HostName
  UserName = $cred.UserName
  FtpSecure = [WinSCP.FtpSecure]::Explicit
}

# ----- 同期の設定 -----
$direction = [WinSCP.SynchronizationMode]::Remote  # 同期の向き: ローカルからリモートに送る
$remove = $false  # 送り側にないファイルを削除するか: しない
$mirror = $false  # 送り側のタイムスタンプのほうが古いとき上書きするか: しない
$to = New-Object WinSCP.TransferOptions
$criteria = [WinSCP.SynchronizationCriteria]::Time

$session = New-Object WinSCP.Session
$session.SessionLogPath = $LogFile
try {
  # パスワードを取り出して接続
  $sessionOptions.Password = $cred.GetNetworkCredential().Password
  $session.Open($sessionOptions)
  $sessionOptions.Password = $null  # 接続したら削除
  $cred = $null  # 接続したら削除

  # --- 1) プレビュー ---
  $diffs = $session.CompareDirectories(
    $direction, $LocalPath, $RemotePath, $remove, $mirror, $criteria, $to
  )
  if ($diffs.Count -eq 0) { Write-Host "No changes."; return }
  Write-Host "Planned changes:"
  foreach ($d in $diffs) {
    $path = if ($d.Local) { $d.Local.FileName } else { $d.Remote.FileName }
    Write-Host ("  [{0}] {1}" -f $d.Action, $path)
  }

  # --- 2) 確認 ---
  $ans = Read-Host "Proceed with actual sync? [y/N]"
  if ($ans -notmatch '^(y|yes)$') { Write-Host "Aborted."; return }

  # --- 3) 同期 ---
  $result = $session.SynchronizeDirectories(
    $direction, $LocalPath, $RemotePath, $remove, $mirror, $criteria, $to
  )
  $result.Check()
  Write-Host "Synchronized:"
  foreach ($u in $result.Uploads) { Write-Host ("  [Upload] {0} -> {1}" -f $u.FileName, $u.Destination) }
  foreach ($d in $result.Downloads) { Write-Host ("  [Download] {0} -> {1}" -f $d.FileName, $d.Destination) }
  foreach ($r in $result.Removals) { Write-Host ("  [Remove] {0}" -f $r.FileName) }
} catch {
  Write-Error $_.Exception.Message
} finally {
  if ($session) { $session.Dispose() }
  Read-Host "Press Enter to exit"
}