wintriallab/scripts/win-updates.ps1

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2015-09-15 15:45:54 +00:00
param($global:RestartRequired=0,
$global:MoreUpdates=0,
$global:MaxCycles=5,
$MaxUpdatesPerCycle=500)
$Logfile = "C:\Windows\Temp\win-updates.log"
function LogWrite {
Param ([string]$logstring)
$now = Get-Date -format s
Add-Content $Logfile -value "$now $logstring"
Write-Host $logstring
}
function Check-ContinueRestartOrEnd() {
$RegistryKey = "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run"
$RegistryEntry = "InstallWindowsUpdates"
switch ($global:RestartRequired) {
0 {
$prop = (Get-ItemProperty $RegistryKey).$RegistryEntry
if ($prop) {
LogWrite "Restart Registry Entry Exists - Removing It"
Remove-ItemProperty -Path $RegistryKey -Name $RegistryEntry -ErrorAction SilentlyContinue
}
LogWrite "No Restart Required"
Check-WindowsUpdates
if (($global:MoreUpdates -eq 1) -and ($script:Cycles -le $global:MaxCycles)) {
Install-WindowsUpdates
} elseif ($script:Cycles -gt $global:MaxCycles) {
LogWrite "Exceeded Cycle Count - Stopping"
Invoke-Expression "a:\openssh.ps1 -AutoStart"
} else {
LogWrite "Done Installing Windows Updates"
Invoke-Expression "a:\openssh.ps1 -AutoStart"
}
}
1 {
$prop = (Get-ItemProperty $RegistryKey).$RegistryEntry
if (-not $prop) {
LogWrite "Restart Registry Entry Does Not Exist - Creating It"
Set-ItemProperty -Path $RegistryKey -Name $RegistryEntry -Value "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -File $($script:ScriptPath) -MaxUpdatesPerCycle $($MaxUpdatesPerCycle)"
} else {
LogWrite "Restart Registry Entry Exists Already"
}
LogWrite "Restart Required - Restarting..."
Restart-Computer
}
default {
LogWrite "Unsure If A Restart Is Required"
break
}
}
}
function Install-WindowsUpdates() {
$script:Cycles++
LogWrite "Evaluating Available Updates with limit of $($MaxUpdatesPerCycle):"
$UpdatesToDownload = New-Object -ComObject 'Microsoft.Update.UpdateColl'
$script:i = 0;
$CurrentUpdates = $SearchResult.Updates
while($script:i -lt $CurrentUpdates.Count -and $script:CycleUpdateCount -lt $MaxUpdatesPerCycle) {
$Update = $CurrentUpdates.Item($script:i)
if (($Update -ne $null) -and (!$Update.IsDownloaded)) {
[bool]$addThisUpdate = $false
if ($Update.InstallationBehavior.CanRequestUserInput) {
LogWrite "> Skipping: $($Update.Title) because it requires user input"
} else {
if (!($Update.EulaAccepted)) {
LogWrite "> Note: $($Update.Title) has a license agreement that must be accepted. Accepting the license."
$Update.AcceptEula()
[bool]$addThisUpdate = $true
$script:CycleUpdateCount++
} else {
[bool]$addThisUpdate = $true
$script:CycleUpdateCount++
}
}
if ([bool]$addThisUpdate) {
LogWrite "Adding: $($Update.Title)"
$UpdatesToDownload.Add($Update) |Out-Null
}
}
$script:i++
}
if ($UpdatesToDownload.Count -eq 0) {
LogWrite "No Updates To Download..."
} else {
LogWrite 'Downloading Updates...'
$ok = 0;
while (! $ok) {
try {
$Downloader = $UpdateSession.CreateUpdateDownloader()
$Downloader.Updates = $UpdatesToDownload
$Downloader.Download()
$ok = 1;
} catch {
LogWrite $_.Exception | Format-List -force
LogWrite "Error downloading updates. Retrying in 30s."
$script:attempts = $script:attempts + 1
Start-Sleep -s 30
}
}
}
$UpdatesToInstall = New-Object -ComObject 'Microsoft.Update.UpdateColl'
[bool]$rebootMayBeRequired = $false
LogWrite 'The following updates are downloaded and ready to be installed:'
foreach ($Update in $SearchResult.Updates) {
if (($Update.IsDownloaded)) {
LogWrite "> $($Update.Title)"
$UpdatesToInstall.Add($Update) |Out-Null
if ($Update.InstallationBehavior.RebootBehavior -gt 0){
[bool]$rebootMayBeRequired = $true
}
}
}
if ($UpdatesToInstall.Count -eq 0) {
LogWrite 'No updates available to install...'
$global:MoreUpdates=0
$global:RestartRequired=0
Invoke-Expression "a:\openssh.ps1 -AutoStart"
break
}
if ($rebootMayBeRequired) {
LogWrite 'These updates may require a reboot'
$global:RestartRequired=1
}
LogWrite 'Installing updates...'
$Installer = $script:UpdateSession.CreateUpdateInstaller()
$Installer.Updates = $UpdatesToInstall
$InstallationResult = $Installer.Install()
LogWrite "Installation Result: $($InstallationResult.ResultCode)"
LogWrite "Reboot Required: $($InstallationResult.RebootRequired)"
LogWrite 'Listing of updates installed and individual installation results:'
if ($InstallationResult.RebootRequired) {
$global:RestartRequired=1
} else {
$global:RestartRequired=0
}
for($i=0; $i -lt $UpdatesToInstall.Count; $i++) {
New-Object -TypeName PSObject -Property @{
Title = $UpdatesToInstall.Item($i).Title
Result = $InstallationResult.GetUpdateResult($i).ResultCode
}
LogWrite "Item: " $UpdatesToInstall.Item($i).Title
LogWrite "Result: " $InstallationResult.GetUpdateResult($i).ResultCode;
}
Check-ContinueRestartOrEnd
}
function Check-WindowsUpdates() {
LogWrite "Checking For Windows Updates"
$Username = $env:USERDOMAIN + "\" + $env:USERNAME
New-EventLog -Source $ScriptName -LogName 'Windows Powershell' -ErrorAction SilentlyContinue
$Message = "Script: " + $ScriptPath + "`nScript User: " + $Username + "`nStarted: " + (Get-Date).toString()
Write-EventLog -LogName 'Windows Powershell' -Source $ScriptName -EventID "104" -EntryType "Information" -Message $Message
LogWrite $Message
$script:UpdateSearcher = $script:UpdateSession.CreateUpdateSearcher()
$script:successful = $FALSE
$script:attempts = 0
$script:maxAttempts = 12
while(-not $script:successful -and $script:attempts -lt $script:maxAttempts) {
try {
$script:SearchResult = $script:UpdateSearcher.Search("IsInstalled=0 and Type='Software' and IsHidden=0")
$script:successful = $TRUE
} catch {
LogWrite $_.Exception | Format-List -force
LogWrite "Search call to UpdateSearcher was unsuccessful. Retrying in 10s."
$script:attempts = $script:attempts + 1
Start-Sleep -s 10
}
}
if ($SearchResult.Updates.Count -ne 0) {
$Message = "There are " + $SearchResult.Updates.Count + " more updates."
LogWrite $Message
try {
for($i=0; $i -lt $script:SearchResult.Updates.Count; $i++) {
LogWrite $script:SearchResult.Updates.Item($i).Title
LogWrite $script:SearchResult.Updates.Item($i).Description
LogWrite $script:SearchResult.Updates.Item($i).RebootRequired
LogWrite $script:SearchResult.Updates.Item($i).EulaAccepted
}
$global:MoreUpdates=1
} catch {
LogWrite $_.Exception | Format-List -force
LogWrite "Showing SearchResult was unsuccessful. Rebooting."
$global:RestartRequired=1
$global:MoreUpdates=0
Check-ContinueRestartOrEnd
LogWrite "Show never happen to see this text!"
Restart-Computer
}
} else {
LogWrite 'There are no applicable updates'
$global:RestartRequired=0
$global:MoreUpdates=0
}
}
$script:ScriptName = $MyInvocation.MyCommand.ToString()
$script:ScriptPath = $MyInvocation.MyCommand.Path
$script:UpdateSession = New-Object -ComObject 'Microsoft.Update.Session'
$script:UpdateSession.ClientApplicationID = 'Packer Windows Update Installer'
$script:UpdateSearcher = $script:UpdateSession.CreateUpdateSearcher()
$script:SearchResult = New-Object -ComObject 'Microsoft.Update.UpdateColl'
$script:Cycles = 0
$script:CycleUpdateCount = 0
Check-WindowsUpdates
if ($global:MoreUpdates -eq 1) {
Install-WindowsUpdates
} else {
Check-ContinueRestartOrEnd
}