109 lines
4.2 KiB
PowerShell
109 lines
4.2 KiB
PowerShell
#
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# Restic Windows Backup - Installation Script
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#
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# =========== start configuration =========== #
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# load restic configuration parmeters (destination, passwords, etc.)
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$SecretsScript = Join-Path $PSScriptRoot "secrets.ps1"
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# load backup configuration variables
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$ConfigScript = Join-Path $PSScriptRoot "config.ps1"
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# initialize secrets
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. $SecretsScript
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# initialize config
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. $ConfigScript
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# apply global configuration
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$ResticExe = Join-Path $InstallPath $ExeName
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$LogPath = Join-Path $InstallPath "logs"
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# make LASTEXITCODE global to enable error checking for Invoke-Expression commands
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$global:LASTEXITCODE=0
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# =========== end configuration =========== #
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# download restic
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if(-not (Test-Path $ResticExe)) {
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$url = $null
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if([Environment]::Is64BitOperatingSystem){
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$url = "fixmetestingnotrealhttps://github.com/restic/restic/releases/download/v0.17.3/restic_0.17.3_windows_amd64.zip"
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}
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else {
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$url = "https://github.com/restic/restic/releases/download/v0.17.3/restic_0.17.3_windows_386.zip"
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}
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try {
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$output = Join-Path $InstallPath "restic.zip"
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Invoke-WebRequest -Uri $url -OutFile $output
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Expand-Archive -LiteralPath $output $InstallPath
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Remove-Item $output
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Get-ChildItem *.exe | Rename-Item -NewName $ExeName
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}
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catch {
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Write-Error "[[Install]] restic.exe download failed. Check errors and resolve: $_"
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exit 1
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}
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}
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# Apply global paramters to $ResticExe, after the $ResticExe has been downloaded/confirmed to exist
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if(-not [String]::IsNullOrEmpty($GlobalParameters)) {
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$ResticExe = "$ResticExe $GlobalParameters"
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}
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# Invoke restic self-update to check for a newer version
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# This is enabled by default unless configuration disables self-update
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if ([String]::IsNullOrEmpty($SelfUpdateEnabled) -or ($SelfUpdateEnabled -eq $true)) {
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Invoke-Expression "$ResticExe self-update"
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if($LASTEXITCODE) {
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Write-Warning "[[Update]] Restic self-update failed. Check errors and resolve: $_"
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}
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}
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# Create log directory if it doesn't exit
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if(-not (Test-Path $LogPath)) {
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New-Item -ItemType Directory -Force -Path $LogPath | Out-Null
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Write-Output "[[Init]] Created log directory: $LogPath"
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}
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# Create the local exclude file
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if(-not (Test-Path $LocalExcludeFile)) {
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New-Item -Type File -Path $LocalExcludeFile | Out-Null
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}
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# Initialize the restic repository
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Invoke-Expression "$ResticExe --verbose init"
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if($LASTEXITCODE) {
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Write-Warning "[[Init]] Repository initialization failed. Check errors and resolve: $_"
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}
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else {
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Write-Output "[[Init]] Repository successfully initialized."
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}
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# Scheduled Windows Task Scheduler to run the backup
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$backup_task_name = "Restic Backup"
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$backup_task = Get-ScheduledTask $backup_task_name -ErrorAction SilentlyContinue
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if($null -eq $backup_task) {
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try {
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$task_action = New-ScheduledTaskAction -Execute 'powershell.exe' -Argument '-ExecutionPolicy Bypass -NonInteractive -NoLogo -NoProfile -Command ".\backup.ps1; exit $LASTEXITCODE"' -WorkingDirectory $InstallPath
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$task_user = New-ScheduledTaskPrincipal -UserId "NT AUTHORITY\SYSTEM" -LogonType ServiceAccount -RunLevel Highest
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$task_settings = New-ScheduledTaskSettingsSet -RestartCount 4 -RestartInterval (New-TimeSpan -Minutes 15) -ExecutionTimeLimit (New-TimeSpan -Days 3) -AllowStartIfOnBatteries -DontStopIfGoingOnBatteries -DontStopOnIdleEnd -MultipleInstances IgnoreNew -IdleDuration 0 -IdleWaitTimeout 0 -StartWhenAvailable -RestartOnIdle
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$task_trigger = New-ScheduledTaskTrigger -Daily -At 4:00am
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Register-ScheduledTask $backup_task_name -Action $task_action -Principal $task_user -Settings $task_settings -Trigger $task_trigger | Out-Null
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Write-Output "[[Scheduler]] Backup task scheduled."
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}
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catch {
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Write-Error "[[Scheduler]] Setting up backup task schedule failed: $_"
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}
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}
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else {
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Write-Warning "[[Scheduler]] Backup task not scheduled: there is already a task with the name '$backup_task_name'."
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}
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# Install NuGet and Send-MailKitMessage module (by force)
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if ($PSVersionTable.PSVersion.Major -eq 5) {
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Install-PackageProvider -Name NuGet -Force
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}
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Install-Module Send-MailKitMessage -Repository PSGallery -Scope AllUsers -Force
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