Joseph Doherty
2cb8a2c317
v2-ci / unit-tests (push) Has been cancelled
An upgrade that swaps the install folder dropped the explicit ScriptWorker isolation ACEs on script-worker\, the install folder and a copied-back pki\ (vd03 2026-11-13). Re-applying needed the operator to repeat the arguments. - Install-ScriptWorkerIsolation.ps1 records its effective settings (InstallRoot, HostServiceAccount, PeCacheDir, HostServiceName, ConfigureHostService) beside DenyPaths under ...\Services\OtOpcUaScriptWorker\Parameters (new plan step SettingsRecord) and locks that key to SYSTEM + Administrators (protected DACL; no secrets recorded). - -Reapply: re-apply from the record, no arguments; prints a summary line (changed/unchanged). - -Verify: check only, [ok]/[MISSING] per step, exit 1 when anything is missing. -Uninstall also works from the record. A node isolated by a pre-#901 installer (DenyPaths only) must run the full-argument install once; both modes say so. - Invoke-OtOpcUaInstallSwap.ps1: preflight -> stop -> move live/candidate -> carry appsettings/pki/logs -> -Reapply -> -Verify -> start; a failed -Verify leaves the service stopped. Also the rollback (-NoCarry). - Tests: dry-run harness 101/101 (record + argument rules; record-key SDDL mutation turns 2 red). The Windows test adds swap -> Verify fails (exactly the 3 lost ACEs) -> Reapply (3 changed) -> Verify ok -> Reapply 12/12 unchanged, PE-cache and firewall negative controls, the swap script, and the pre-#901 refusal; 52/52 on windev under 5.1 and 7, with a scratch local host account and with SYSTEM. Evidence: scripts/validation/opcua-windows-service/evidence/2026-11-13-windev-901-reapply-verify. - Docs: ServiceHosting isolation section; vd03 pack (swap step, rollback, post-deploy gate, one-time full-argument run), the 2026-11-13 vd03 record, and the QA pack (QA swap preceded the isolation install; ACLs checked intact over SMB on vq03/vq04 2026-11-13; next-deploy procedure). Claude-Session: https://claude.ai/code/session_01GT67ACmpMR7b9LGRPLijMi
610 lines
38 KiB
PowerShell
610 lines
38 KiB
PowerShell
<#
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ScriptWorker isolation (lmxopcua#780, design §6 + owner decisions §14 #5/#6, §7 PeCacheDir ACL).
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Pure planning functions (no OS calls — the dry-run harness runs them on any OS) plus the Windows apply step.
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Install-ScriptWorkerIsolation.ps1 is the entry point; see its help.
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The worker identity is the virtual account NT SERVICE\<WorkerServiceName>. Its SID is computed from the name
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(Get-OtOpcUaServiceSid, the algorithm behind `sc.exe showsid`), and the host starts each worker with a restricted
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token whose restricting SIDs are that identity + Everyone + BUILTIN\Users + RESTRICTED (ScriptWorkerIdentity.cs,
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RestrictedWorkerLauncher.cs). Every access check the worker makes must therefore pass for the host account AND for
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that set — which is why the ACLs below grant or deny the worker identity specifically.
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#>
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Set-StrictMode -Version Latest
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# Access masks (FileSystemRights) used in the planned ACEs.
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$script:FullControl = 0x1F01FF
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$script:Modify = 0x1301BF # Modify | Synchronize
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$script:ReadAndExecute = 0x1200A9 # ReadAndExecute | Synchronize
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$script:ReadData = 0x000001 # ReadData (files) / ListDirectory (folders)
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# lmxopcua#890: the deny the worker identity gets on the install folder and on every -DenyPaths folder. Read AND write:
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# ReadData/ListDirectory 0x1, WriteData/AddFile 0x2, AppendData/AddSubdirectory 0x4, WriteExtendedAttributes 0x10,
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# DeleteSubdirectoriesAndFiles 0x40, WriteAttributes 0x100, Delete 0x10000, ChangePermissions 0x40000,
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# TakeOwnership 0x80000.
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# Not denied, so the loader can still walk to script-worker\ and the worker can still run: Traverse/Execute 0x20,
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# ReadAttributes 0x80, ReadPermissions 0x20000, Synchronize 0x100000 (and ReadExtendedAttributes 0x8, which leaks nothing).
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# The write half matters because a data drive commonly grants BUILTIN\Users (one of the worker's restricting SIDs)
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# CreateFiles/AppendData on its subfolders: without it a worker could drop a certificate into pki\trusted\certs.
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$script:DenyMask = 0x0D0157
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# lmxopcua#890: where the installer records the -DenyPaths it applied, so a later re-run removes the ones dropped from
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# the list and -Uninstall removes exactly what was added without the operator repeating them. The value lives under the
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# anchor service's key and goes with it.
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$script:DenyRecordValue = 'DenyPaths'
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# lmxopcua#901: the effective install arguments, recorded beside DenyPaths so `-Reapply` (after an upgrade swapped the
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# install folder) and `-Verify` (post-deploy gate) need no arguments. Paths, an account name and two flags; no secrets.
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# The key's DACL is set protected, SYSTEM + Administrators only (the services hive is otherwise readable by Users, one of
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# the worker token's restricting SIDs, and the record lists exactly which folders are denied).
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$script:SettingsValueNames = @('InstallRoot', 'HostServiceAccount', 'PeCacheDir', 'HostServiceName', 'ConfigureHostService')
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$script:RecordKeySddl = 'D:PAI(A;CI;KA;;;SY)(A;CI;KA;;;BA)'
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$script:FirewallRuleName = 'OtOpcUa-ScriptWorker-BlockOutbound'
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$script:WorkerExeName = 'ZB.MOM.WW.OtOpcUa.ScriptWorker.exe'
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$script:EnvIdentity = 'Scripting__Worker__Identity'
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$script:EnvPeCacheDir = 'Scripting__Worker__PeCacheDir'
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function Get-OtOpcUaServiceSid {
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<#
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.SYNOPSIS
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The SID of the virtual account NT SERVICE\<Name>: S-1-5-80- + SHA-1 of the upper-cased name (UTF-16LE) read as
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five little-endian UInt32 values. Identical to `sc.exe showsid <Name>` and to ScriptWorkerIdentity.ServiceSid.
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#>
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[CmdletBinding()]
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param([Parameter(Mandatory)] [ValidatePattern('^[A-Za-z0-9_.\-]{1,80}$')] [string]$Name)
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$bytes = [System.Text.Encoding]::Unicode.GetBytes($Name.ToUpperInvariant())
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$sha1 = [System.Security.Cryptography.SHA1]::Create()
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try { $hash = $sha1.ComputeHash($bytes) } finally { $sha1.Dispose() }
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$parts = for ($i = 0; $i -lt 5; $i++) { [BitConverter]::ToUInt32($hash, $i * 4) }
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'S-1-5-80-' + ($parts -join '-')
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}
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function Format-OtOpcUaAce {
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# One SDDL ACE string: (A|D;flags;0xMASK;;;SID).
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param([ValidateSet('A', 'D')] [string]$Type, [string]$Flags, [int]$Mask, [string]$Sid)
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'({0};{1};0x{2:x};;;{3})' -f $Type, $Flags, $Mask, $Sid
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}
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function Get-OtOpcUaPeCacheSddl {
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<#
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.SYNOPSIS
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The PeCacheDir root's security descriptor: owner Administrators, PROTECTED (no inherited Users/Everyone/
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Authenticated Users), SYSTEM + Administrators + the host account full control (container + object inherit).
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The worker identity gets NOTHING here — the HMAC key (pe-cache.key) and the launch markers (workers\) stay
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host-only; the worker's one writable place is the pe\ subfolder (Get-OtOpcUaPeEntriesAce).
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#>
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param([Parameter(Mandatory)] [string]$HostSid)
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$aces = @(
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(Format-OtOpcUaAce -Type A -Flags 'OICI' -Mask $script:FullControl -Sid 'SY')
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(Format-OtOpcUaAce -Type A -Flags 'OICI' -Mask $script:FullControl -Sid 'BA')
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)
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if ($HostSid -ne 'S-1-5-18') { $aces += Format-OtOpcUaAce -Type A -Flags 'OICI' -Mask $script:FullControl -Sid $HostSid }
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'O:BAG:SYD:PAI' + ($aces -join '')
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}
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function Get-OtOpcUaPeEntriesAce {
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# pe\ : the worker compiles in-process (owner decision §14 #7) and writes HMAC'd entries here — Modify, inherited.
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param([Parameter(Mandatory)] [string]$WorkerSid)
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Format-OtOpcUaAce -Type A -Flags 'OICI' -Mask $script:Modify -Sid $WorkerSid
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}
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function Get-OtOpcUaScriptWorkerFolderAce {
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# script-worker\ : the worker's own binaries — read and execute, inherited.
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param([Parameter(Mandatory)] [string]$WorkerSid)
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Format-OtOpcUaAce -Type A -Flags 'OICI' -Mask $script:ReadAndExecute -Sid $WorkerSid
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}
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function Get-OtOpcUaInstallRootDenyAce {
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<#
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.SYNOPSIS
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InstallRoot\ and every -DenyPaths folder: DENY the worker identity read and write ($script:DenyMask), inherited —
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so appsettings*.json, the logs, the host binaries, pki\ (private keys, trust lists) and data\ (secrets.db,
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LocalDb) are unreadable and unwritable to the worker even where BUILTIN\Users (one of its restricting SIDs) can
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read or create files (lmxopcua#890). script-worker\'s explicit allow is the nearer ACE and wins below it.
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#>
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param([Parameter(Mandatory)] [string]$WorkerSid)
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Format-OtOpcUaAce -Type D -Flags 'OICI' -Mask $script:DenyMask -Sid $WorkerSid
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}
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function Test-OtOpcUaPathWithin {
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# True when $Path equals $Ancestor or is below it (Windows paths, case-insensitive, no OS call).
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param([string]$Path, [string]$Ancestor)
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$p = $Path.TrimEnd('\'); $a = $Ancestor.TrimEnd('\')
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$p -ieq $a -or $p.StartsWith($a + '\', [StringComparison]::OrdinalIgnoreCase)
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}
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function Resolve-OtOpcUaDenyPaths {
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<#
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.SYNOPSIS
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Normalises -DenyPaths (lmxopcua#890): splits 'a,b' / 'a;b' (powershell -File passes an array as one string),
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trims trailing '\', drops blanks, de-duplicates case-insensitively, drops InstallRoot itself (InstallRootDeny
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covers it) and refuses what would break the worker or deny far too much.
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#>
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param([string[]]$Paths, [Parameter(Mandatory)] [string]$InstallRoot, [Parameter(Mandatory)] [string]$PeCacheDir)
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$root = $InstallRoot.TrimEnd('\')
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$workerFolder = "$root\script-worker"
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$cache = $PeCacheDir.TrimEnd('\')
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$out = [System.Collections.Generic.List[string]]::new()
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foreach ($raw in @($Paths | Where-Object { $_ } | ForEach-Object { $_ -split '[,;]' })) {
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$p = $raw.Trim().TrimEnd('\')
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if (-not $p) { continue }
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if ($p -match '^[A-Za-z]:$' -or $p -match '^\\\\[^\\]+(\\[^\\]+)?$') {
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throw "DenyPaths entry '$raw' is a drive or share root; deny the deployment folder instead"
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}
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if ($p -notmatch '^([A-Za-z]:\\|\\\\[^\\]+\\)') { throw "DenyPaths entry '$raw' must be an absolute Windows path" }
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if (Test-OtOpcUaPathWithin -Path $p -Ancestor $workerFolder) {
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throw "DenyPaths entry '$raw' is (inside) $workerFolder, the worker's own binaries"
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}
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if (Test-OtOpcUaPathWithin -Path $p -Ancestor $cache) {
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throw "DenyPaths entry '$raw' is (inside) PeCacheDir '$PeCacheDir'; the worker writes its compiled entries there"
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}
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if ($p -ieq $root) { continue }
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if (-not ($out | Where-Object { $_ -ieq $p })) { $out.Add($p) }
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}
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$out.ToArray()
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}
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function New-OtOpcUaPlanStep {
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param([string]$Id, [string]$Target, [string]$Change, [hashtable]$Data = @{})
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[pscustomobject]@{ Id = $Id; Target = $Target; Change = $Change; Data = $Data }
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}
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function Get-ScriptWorkerIsolationPlan {
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<#
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.SYNOPSIS
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Every change Install-ScriptWorkerIsolation.ps1 makes, in order, as data. Pure: no OS call, so the dry-run harness
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(scripts/install/tests/Test-ScriptWorkerIsolation.ps1) asserts it on any OS and -WhatIf prints it verbatim.
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#>
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[CmdletBinding()]
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param(
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[Parameter(Mandatory)] [string]$InstallRoot,
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[Parameter(Mandatory)] [string]$HostSid,
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[Parameter(Mandatory)] [string]$PeCacheDir,
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[string]$WorkerServiceName = 'OtOpcUaScriptWorker',
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[string]$HostServiceName = 'OtOpcUaHost',
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# lmxopcua#890: more folders to deny the worker identity (the deployment folder around InstallRoot, pki\, data\,
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# logs\, a Secrets or LocalDb folder elsewhere). Each gets the same inherited deny as InstallRoot.
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[string[]]$DenyPaths = @(),
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# The -DenyPaths a previous run recorded (read by the entry script from the anchor service's key; empty under
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# -PlanOnly). Install removes the deny from recorded paths no longer listed; -Uninstall removes it from all.
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[string[]]$RecordedDenyPaths = @(),
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# lmxopcua#901: the -HostServiceAccount as the operator gave it (recorded for -Reapply). Defaults to the SID.
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[string]$HostServiceAccount,
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[switch]$ConfigureHostService,
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[switch]$Uninstall,
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[switch]$RemovePeCache
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)
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# Windows paths, planned on any OS (the harness runs on macOS/Linux too): drive-rooted or UNC only.
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foreach ($p in @{ InstallRoot = $InstallRoot; PeCacheDir = $PeCacheDir }.GetEnumerator()) {
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if ($p.Value -notmatch '^([A-Za-z]:\\|\\\\[^\\]+\\)') { throw "$($p.Key) '$($p.Value)' must be an absolute Windows path" }
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}
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$root = $InstallRoot.TrimEnd('\')
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$cache = $PeCacheDir.TrimEnd('\')
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if ($cache -ieq $root -or $cache.StartsWith($root + '\', [StringComparison]::OrdinalIgnoreCase)) {
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throw "PeCacheDir '$PeCacheDir' is inside InstallRoot '$InstallRoot'; the host refuses a cache inside its content root"
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}
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$workerSid = Get-OtOpcUaServiceSid -Name $WorkerServiceName
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$identity = "NT SERVICE\$WorkerServiceName"
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$workerFolder = "$root\script-worker"
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$workerExe = "$workerFolder\$($script:WorkerExeName)"
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$entries = "$cache\pe"
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$deny = @(Resolve-OtOpcUaDenyPaths -Paths $DenyPaths -InstallRoot $root -PeCacheDir $cache)
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# Recorded paths are not re-validated (they were when recorded); only normalised, so a removal always matches.
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$recorded = @($RecordedDenyPaths | Where-Object { $_ } | ForEach-Object { $_.Trim().TrimEnd('\') } | Where-Object { $_ -and $_ -ine $root } |
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Sort-Object -Unique)
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$denyAce = Get-OtOpcUaInstallRootDenyAce -WorkerSid $workerSid
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$recordKey = "HKLM:\SYSTEM\CurrentControlSet\Services\$WorkerServiceName\Parameters"
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$steps = [System.Collections.Generic.List[object]]::new()
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if (-not $Uninstall) {
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$steps.Add((New-OtOpcUaPlanStep 'AnchorService' $WorkerServiceName `
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"register the disabled anchor service '$WorkerServiceName' so the virtual account '$identity' ($workerSid) resolves by name (never started)" `
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@{ Name = $WorkerServiceName; Identity = $identity; BinPath = $workerExe }))
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foreach ($stale in @($recorded | Where-Object { $p = $_; -not ($deny | Where-Object { $_ -ieq $p }) })) {
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$steps.Add((New-OtOpcUaPlanStep 'SensitiveDirDeny' $stale `
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"remove every explicit ACE for the worker identity from '$stale' (recorded by an earlier run, no longer in -DenyPaths)" `
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@{ Path = $stale; Sid = $workerSid; Remove = $true }))
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}
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$steps.Add((New-OtOpcUaPlanStep 'DenyPathRecord' $recordKey `
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"record the denied folders ($(if ($deny.Count) { $deny -join '; ' } else { 'none beyond the install folder' })) so a re-run or -Uninstall removes exactly these" `
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@{ Key = $recordKey; Name = $script:DenyRecordValue; Paths = $deny }))
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$settings = [ordered]@{
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InstallRoot = $root; HostServiceAccount = $(if ($HostServiceAccount) { $HostServiceAccount } else { $HostSid })
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PeCacheDir = $cache; HostServiceName = $HostServiceName; ConfigureHostService = [int][bool]$ConfigureHostService
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}
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$steps.Add((New-OtOpcUaPlanStep 'SettingsRecord' $recordKey `
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"record the effective settings (InstallRoot, HostServiceAccount, PeCacheDir, HostServiceName, ConfigureHostService) and lock the key to SYSTEM + Administrators, so -Reapply and -Verify need no arguments (lmxopcua#901)" `
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@{ Key = $recordKey; Settings = $settings; Sddl = $script:RecordKeySddl }))
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$steps.Add((New-OtOpcUaPlanStep 'PeCacheDir' $cache `
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"create the PE cache directory and set its ACL (protected; SYSTEM, Administrators, host account full control; no Users; no worker access to the key or markers)" `
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@{ Path = $cache; Sddl = (Get-OtOpcUaPeCacheSddl -HostSid $HostSid) }))
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$steps.Add((New-OtOpcUaPlanStep 'PeEntriesDir' $entries `
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"create the PE entries directory and grant the worker identity Modify (it compiles and writes HMAC'd entries)" `
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@{ Path = $entries; Ace = (Get-OtOpcUaPeEntriesAce -WorkerSid $workerSid); Sid = $workerSid; Mask = $script:Modify; Type = 'Allow' }))
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$steps.Add((New-OtOpcUaPlanStep 'WorkerFolderAcl' $workerFolder `
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"grant the worker identity read+execute on its own binaries" `
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@{ Path = $workerFolder; Ace = (Get-OtOpcUaScriptWorkerFolderAce -WorkerSid $workerSid); Sid = $workerSid; Mask = $script:ReadAndExecute; Type = 'Allow' }))
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$steps.Add((New-OtOpcUaPlanStep 'InstallRootDeny' $root `
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"deny the worker identity read and write on the install folder (appsettings, logs, host binaries), inherited; script-worker\ stays readable" `
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@{ Path = $root; Ace = $denyAce; Sid = $workerSid; Mask = $script:DenyMask; Type = 'Deny' }))
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foreach ($p in $deny) {
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$steps.Add((New-OtOpcUaPlanStep 'SensitiveDirDeny' $p `
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"deny the worker identity read and write on '$p' (certificates, secrets, stores, logs, backups), inherited" `
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@{ Path = $p; Ace = $denyAce; Sid = $workerSid; Mask = $script:DenyMask; Type = 'Deny' }))
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}
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$steps.Add((New-OtOpcUaPlanStep 'FirewallBlockOutbound' $script:FirewallRuleName `
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"add a Windows Firewall rule blocking ALL outbound traffic from '$workerExe' (every profile)" `
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@{ Name = $script:FirewallRuleName; Program = $workerExe }))
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if ($ConfigureHostService) {
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$steps.Add((New-OtOpcUaPlanStep 'HostServiceEnv' $HostServiceName `
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"set $($script:EnvIdentity)=$identity and $($script:EnvPeCacheDir)=$cache in the '$HostServiceName' service environment (other entries kept; takes effect on the next service start)" `
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@{ Service = $HostServiceName; Set = [ordered]@{ $script:EnvIdentity = $identity; $script:EnvPeCacheDir = $cache } }))
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}
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}
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else {
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if ($ConfigureHostService) {
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$steps.Add((New-OtOpcUaPlanStep 'HostServiceEnv' $HostServiceName `
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"remove $($script:EnvIdentity) and $($script:EnvPeCacheDir) from the '$HostServiceName' service environment (workers revert to the host's token on the next start)" `
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@{ Service = $HostServiceName; Remove = @($script:EnvIdentity, $script:EnvPeCacheDir) }))
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}
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$steps.Add((New-OtOpcUaPlanStep 'FirewallBlockOutbound' $script:FirewallRuleName `
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"remove the Windows Firewall rule '$($script:FirewallRuleName)'" @{ Name = $script:FirewallRuleName; Remove = $true }))
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foreach ($p in @(@($deny) + @($recorded) | Sort-Object -Unique)) {
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$steps.Add((New-OtOpcUaPlanStep 'SensitiveDirDeny' $p `
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"remove every explicit ACE for the worker identity from '$p'" @{ Path = $p; Sid = $workerSid; Remove = $true }))
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}
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$steps.Add((New-OtOpcUaPlanStep 'InstallRootDeny' $root `
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"remove every explicit ACE for the worker identity from the install folder" @{ Path = $root; Sid = $workerSid; Remove = $true }))
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$steps.Add((New-OtOpcUaPlanStep 'WorkerFolderAcl' $workerFolder `
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"remove every explicit ACE for the worker identity from script-worker\" @{ Path = $workerFolder; Sid = $workerSid; Remove = $true }))
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if ($RemovePeCache) {
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$steps.Add((New-OtOpcUaPlanStep 'PeCacheDir' $cache `
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"delete the PE cache directory (HMAC key, entries, launch markers; the host recreates a fresh cache if still configured)" `
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@{ Path = $cache; Remove = $true }))
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}
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else {
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$steps.Add((New-OtOpcUaPlanStep 'PeEntriesDir' $entries `
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"remove every explicit ACE for the worker identity from the PE entries directory (the cache itself is kept; -RemovePeCache deletes it)" `
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@{ Path = $entries; Sid = $workerSid; Remove = $true }))
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}
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$steps.Add((New-OtOpcUaPlanStep 'DenyPathRecord' $recordKey `
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"delete the record of denied folders" @{ Key = $recordKey; Name = $script:DenyRecordValue; Remove = $true }))
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$steps.Add((New-OtOpcUaPlanStep 'AnchorService' $WorkerServiceName `
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"delete the anchor service '$WorkerServiceName'" @{ Name = $WorkerServiceName; Remove = $true }))
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}
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$steps
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}
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# ---------------------------------------------------------------------------------------------------------------------
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# Apply (Windows only). Each function is idempotent: it reads the current state, changes only what differs, and
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# returns 'changed' or 'unchanged'. Callers gate every call with ShouldProcess, so -WhatIf runs none of them.
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# ---------------------------------------------------------------------------------------------------------------------
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function Get-OtOpcUaExplicitAceState {
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# The explicit ACEs for $Sid on $Path and whether they are exactly the wanted one (or none when $Remove).
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param([string]$Path, [string]$Sid, [int]$Mask = 0, [string]$Type = 'Allow', [switch]$Remove)
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$acl = Get-Acl -LiteralPath $Path # #800: DirectoryInfo.GetAccessControl does not exist on PowerShell 7 (.NET)
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$identity = [System.Security.Principal.SecurityIdentifier]::new($Sid)
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$explicit = @($acl.GetAccessRules($true, $false, [System.Security.Principal.SecurityIdentifier]) |
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Where-Object { $_.IdentityReference -eq $identity })
|
|
$inherit = [System.Security.AccessControl.InheritanceFlags]'ContainerInherit, ObjectInherit'
|
|
# #800: @() keeps $wanted an array; the if-expression unrolled it to a scalar ($null on -Remove), and .Count on that
|
|
# throws under Set-StrictMode -Version Latest on Windows PowerShell 5.1.
|
|
$wanted = @(if (-not $Remove) {
|
|
[System.Security.AccessControl.FileSystemAccessRule]::new($identity, [System.Security.AccessControl.FileSystemRights]$Mask,
|
|
$inherit, [System.Security.AccessControl.PropagationFlags]::None, [System.Security.AccessControl.AccessControlType]$Type)
|
|
})
|
|
$same = ($explicit.Count -eq $wanted.Count) -and (
|
|
$wanted.Count -eq 0 -or (
|
|
[int]$explicit[0].FileSystemRights -eq $Mask -and $explicit[0].AccessControlType -eq $wanted[0].AccessControlType -and
|
|
$explicit[0].InheritanceFlags -eq $inherit -and $explicit[0].PropagationFlags -eq 'None'))
|
|
$found = @($explicit | ForEach-Object { '{0} 0x{1:x} {2}' -f $_.AccessControlType, [int]$_.FileSystemRights, $_.InheritanceFlags }) -join '; '
|
|
[pscustomobject]@{ Acl = $acl; Identity = $identity; Wanted = $wanted; Same = $same; Found = $(if ($found) { $found } else { 'none' }) }
|
|
}
|
|
|
|
function Set-OtOpcUaExplicitAce {
|
|
# Ensures exactly one explicit ACE for $Sid on $Path with the given type/mask/inheritance (or none when $Remove).
|
|
param([string]$Path, [string]$Sid, [int]$Mask = 0, [string]$Type = 'Allow', [switch]$Remove)
|
|
if (-not (Test-Path -LiteralPath $Path)) {
|
|
if ($Remove) { return 'unchanged' }
|
|
throw "$Path does not exist"
|
|
}
|
|
$state = Get-OtOpcUaExplicitAceState -Path $Path -Sid $Sid -Mask $Mask -Type $Type -Remove:$Remove
|
|
if ($state.Same) { return 'unchanged' }
|
|
$acl = $state.Acl
|
|
$acl.PurgeAccessRules($state.Identity)
|
|
foreach ($rule in $state.Wanted) { $acl.AddAccessRule($rule) }
|
|
Set-Acl -LiteralPath $Path -AclObject $acl
|
|
'changed'
|
|
}
|
|
|
|
function Invoke-OtOpcUaSc {
|
|
# Runs sc.exe with an explicitly quoted command line (CommandLineToArgvW rules), identical on PowerShell 5.1 and 7.
|
|
# Returns the exit code. Used where an argument contains literal double quotes.
|
|
param([string[]]$Arguments)
|
|
$quoted = foreach ($a in $Arguments) { '"' + ($a -replace '(\\*)"', '$1$1\"' -replace '(\\+)$', '$1$1') + '"' }
|
|
$psi = [System.Diagnostics.ProcessStartInfo]::new((Join-Path ([Environment]::SystemDirectory) 'sc.exe'), ($quoted -join ' '))
|
|
$psi.UseShellExecute = $false
|
|
$psi.CreateNoWindow = $true
|
|
$psi.RedirectStandardOutput = $true
|
|
$psi.RedirectStandardError = $true
|
|
$proc = [System.Diagnostics.Process]::Start($psi)
|
|
$null = $proc.StandardOutput.ReadToEnd()
|
|
$null = $proc.StandardError.ReadToEnd()
|
|
$proc.WaitForExit()
|
|
$proc.ExitCode
|
|
}
|
|
|
|
function Set-OtOpcUaStepAce {
|
|
param([hashtable]$Data)
|
|
if ($Data.ContainsKey('Remove')) { return (Set-OtOpcUaExplicitAce -Path $Data.Path -Sid $Data.Sid -Remove) }
|
|
Set-OtOpcUaExplicitAce -Path $Data.Path -Sid $Data.Sid -Mask $Data.Mask -Type $Data.Type
|
|
}
|
|
|
|
function Invoke-ScriptWorkerIsolationStep {
|
|
<#
|
|
.SYNOPSIS
|
|
Applies one plan step on Windows. Idempotent; returns 'changed' or 'unchanged'.
|
|
#>
|
|
[CmdletBinding()]
|
|
param([Parameter(Mandatory)] $Step)
|
|
$d = $Step.Data
|
|
switch ($Step.Id) {
|
|
'AnchorService' {
|
|
$svc = Get-Service -Name $d.Name -ErrorAction SilentlyContinue
|
|
if ($d.ContainsKey('Remove')) {
|
|
if (-not $svc) { return 'unchanged' }
|
|
& sc.exe delete $d.Name | Out-Null
|
|
if ($LASTEXITCODE -ne 0) { throw "sc.exe delete $($d.Name) failed ($LASTEXITCODE)" }
|
|
return 'changed'
|
|
}
|
|
$verb = if ($svc) { 'config' } else { 'create' }
|
|
$cfg = Get-CimInstance Win32_Service -Filter "Name='$($d.Name)'" -ErrorAction SilentlyContinue
|
|
if ($cfg -and $cfg.StartMode -eq 'Disabled' -and $cfg.StartName -ieq $d.Identity -and $cfg.PathName -eq "`"$($d.BinPath)`"") {
|
|
return 'unchanged'
|
|
}
|
|
# #883: the binPath value carries literal quotes. Windows PowerShell 5.1 passes native arguments with legacy quoting
|
|
# (embedded quotes are dropped or mangled, so the stored path was unquoted and every re-run reported 'changed'),
|
|
# PowerShell 7 escapes them. Build the command line explicitly so both hosts store the same value.
|
|
$scExit = Invoke-OtOpcUaSc @($verb, $d.Name, 'binPath=', "`"$($d.BinPath)`"", 'start=', 'disabled', 'obj=', $d.Identity,
|
|
'DisplayName=', 'OtOpcUa ScriptWorker identity (anchor, never started)')
|
|
if ($scExit -ne 0) { throw "sc.exe $verb $($d.Name) failed ($scExit)" }
|
|
& sc.exe sidtype $d.Name unrestricted | Out-Null
|
|
& sc.exe description $d.Name 'Anchors the NT SERVICE virtual account OtOpcUa ScriptWorker processes are restricted to (lmxopcua#780). Never started: the OtOpcUaHost launches workers itself under a restricted token.' | Out-Null
|
|
return 'changed'
|
|
}
|
|
'PeCacheDir' {
|
|
if ($d.ContainsKey('Remove')) {
|
|
if (-not (Test-Path -LiteralPath $d.Path)) { return 'unchanged' }
|
|
Remove-Item -LiteralPath $d.Path -Recurse -Force
|
|
return 'changed'
|
|
}
|
|
$changed = $false
|
|
if (-not (Test-Path -LiteralPath $d.Path)) { New-Item -ItemType Directory -Path $d.Path -Force | Out-Null; $changed = $true }
|
|
$current = (Get-Acl -LiteralPath $d.Path).GetSecurityDescriptorSddlForm('Access, Owner')
|
|
$desired = [System.Security.AccessControl.DirectorySecurity]::new()
|
|
$desired.SetSecurityDescriptorSddlForm($d.Sddl, 'Access, Owner')
|
|
if ($current -ne $desired.GetSecurityDescriptorSddlForm('Access, Owner')) {
|
|
Set-Acl -LiteralPath $d.Path -AclObject $desired # propagates to the key file, pe\ and workers\ (inherited ACEs)
|
|
$changed = $true
|
|
}
|
|
return $(if ($changed) { 'changed' } else { 'unchanged' })
|
|
}
|
|
'PeEntriesDir' {
|
|
if (-not $d.ContainsKey('Remove') -and -not (Test-Path -LiteralPath $d.Path)) {
|
|
New-Item -ItemType Directory -Path $d.Path -Force | Out-Null
|
|
}
|
|
return (Set-OtOpcUaStepAce -Data $d)
|
|
}
|
|
{ $_ -in 'WorkerFolderAcl', 'InstallRootDeny', 'SensitiveDirDeny' } {
|
|
return (Set-OtOpcUaStepAce -Data $d)
|
|
}
|
|
'DenyPathRecord' {
|
|
$current = @(Get-OtOpcUaRecordedDenyPaths -Key $d.Key -Name $d.Name)
|
|
if ($d.ContainsKey('Remove')) {
|
|
if (-not (Test-Path -LiteralPath $d.Key)) { return 'unchanged' }
|
|
Remove-Item -LiteralPath $d.Key -Recurse -Force
|
|
return 'changed'
|
|
}
|
|
if ((@($current) -join "`n") -ceq (@($d.Paths) -join "`n")) { return 'unchanged' }
|
|
if (-not (Test-Path -LiteralPath $d.Key)) { New-Item -Path $d.Key -Force | Out-Null }
|
|
if (@($d.Paths).Count -eq 0) { Remove-ItemProperty -LiteralPath $d.Key -Name $d.Name -ErrorAction SilentlyContinue }
|
|
else { Set-ItemProperty -LiteralPath $d.Key -Name $d.Name -Type MultiString -Value ([string[]]$d.Paths) }
|
|
return 'changed'
|
|
}
|
|
'SettingsRecord' {
|
|
# Install only: -Uninstall deletes the whole key in its DenyPathRecord step.
|
|
$changed = $false
|
|
if (-not (Test-Path -LiteralPath $d.Key)) { New-Item -Path $d.Key -Force | Out-Null; $changed = $true }
|
|
$current = Get-ItemProperty -LiteralPath $d.Key -ErrorAction SilentlyContinue
|
|
foreach ($name in @($d.Settings.Keys)) {
|
|
$want = $d.Settings[$name]
|
|
$have = if ($current -and $current.PSObject.Properties[$name]) { $current.$name } else { $null }
|
|
if ($null -ne $have -and "$have" -ceq "$want") { continue }
|
|
$kind = if ($want -is [int]) { 'DWord' } else { 'String' }
|
|
Set-ItemProperty -LiteralPath $d.Key -Name $name -Type $kind -Value $want
|
|
$changed = $true
|
|
}
|
|
if (-not (Test-OtOpcUaRecordKeyAcl -Key $d.Key -Sddl $d.Sddl)) {
|
|
$acl = Get-Acl -Path $d.Key
|
|
$acl.SetSecurityDescriptorSddlForm($d.Sddl, 'Access')
|
|
Set-Acl -Path $d.Key -AclObject $acl
|
|
$changed = $true
|
|
}
|
|
return $(if ($changed) { 'changed' } else { 'unchanged' })
|
|
}
|
|
'FirewallBlockOutbound' {
|
|
$rule = Get-NetFirewallRule -Name $d.Name -ErrorAction SilentlyContinue
|
|
if ($d.ContainsKey('Remove')) {
|
|
if (-not $rule) { return 'unchanged' }
|
|
Remove-NetFirewallRule -Name $d.Name
|
|
return 'changed'
|
|
}
|
|
if ($rule) {
|
|
$app = ($rule | Get-NetFirewallApplicationFilter).Program
|
|
if ($rule.Direction -eq 'Outbound' -and $rule.Action -eq 'Block' -and $rule.Enabled -eq 'True' -and
|
|
$rule.Profile -eq 'Any' -and $app -ieq $d.Program) { return 'unchanged' }
|
|
Remove-NetFirewallRule -Name $d.Name
|
|
}
|
|
New-NetFirewallRule -Name $d.Name -DisplayName 'OtOpcUa ScriptWorker - block outbound' `
|
|
-Description 'lmxopcua#780 design §6: OtOpcUa script workers never need the network; scripts are also denied System.Net at compile time.' `
|
|
-Direction Outbound -Action Block -Program $d.Program -Profile Any -Enabled True | Out-Null
|
|
return 'changed'
|
|
}
|
|
'HostServiceEnv' {
|
|
$key = "HKLM:\SYSTEM\CurrentControlSet\Services\$($d.Service)"
|
|
if (-not (Test-Path $key)) {
|
|
if ($d.ContainsKey('Remove')) { return 'unchanged' }
|
|
throw "service '$($d.Service)' is not installed (run Install-Services.ps1 first)"
|
|
}
|
|
$current = @((Get-ItemProperty -Path $key -Name Environment -ErrorAction SilentlyContinue).Environment | Where-Object { $_ })
|
|
$names = if ($d.ContainsKey('Remove')) { $d.Remove } else { @($d.Set.Keys) }
|
|
$next = @($current | Where-Object { $n = ($_ -split '=', 2)[0]; $names -notcontains $n })
|
|
if (-not $d.ContainsKey('Remove')) { foreach ($k in $d.Set.Keys) { $next += "$k=$($d.Set[$k])" } }
|
|
if ((@($current) -join "`n") -eq (@($next) -join "`n")) { return 'unchanged' }
|
|
Set-ItemProperty -Path $key -Name Environment -Type MultiString -Value ([string[]]$next)
|
|
return 'changed'
|
|
}
|
|
default { throw "unknown plan step '$($Step.Id)'" }
|
|
}
|
|
}
|
|
|
|
function Get-OtOpcUaRecordedDenyPaths {
|
|
# The -DenyPaths an earlier run recorded under the anchor service's key (lmxopcua#890); empty when there is none.
|
|
param([string]$WorkerServiceName = 'OtOpcUaScriptWorker', [string]$Key, [string]$Name = $script:DenyRecordValue)
|
|
if (-not $Key) { $Key = "HKLM:\SYSTEM\CurrentControlSet\Services\$WorkerServiceName\Parameters" }
|
|
if (-not (Test-Path -LiteralPath $Key)) { return }
|
|
$v = (Get-ItemProperty -LiteralPath $Key -Name $Name -ErrorAction SilentlyContinue)
|
|
if ($v) { @($v.$Name | Where-Object { $_ }) }
|
|
}
|
|
|
|
function Test-OtOpcUaRecordKeyAcl {
|
|
# True when the record key's DACL is exactly $Sddl (protected; SYSTEM + Administrators), compared in canonical form.
|
|
param([string]$Key, [string]$Sddl = $script:RecordKeySddl)
|
|
$want = [System.Security.AccessControl.RegistrySecurity]::new()
|
|
$want.SetSecurityDescriptorSddlForm($Sddl, 'Access')
|
|
# -Path, not -LiteralPath: Windows PowerShell 5.1's Get-Acl -LiteralPath does not find registry keys (windev, #901).
|
|
(Get-Acl -Path $Key).GetSecurityDescriptorSddlForm('Access') -ceq $want.GetSecurityDescriptorSddlForm('Access')
|
|
}
|
|
|
|
function Get-OtOpcUaIsolationSettings {
|
|
<#
|
|
.SYNOPSIS
|
|
The settings an earlier install recorded (lmxopcua#901) as a hashtable: InstallRoot, HostServiceAccount, PeCacheDir,
|
|
HostServiceName, ConfigureHostService ([bool]) and DenyPaths. $null when the key or InstallRoot/HostServiceAccount
|
|
is missing (nothing installed, or installed by an installer older than #901, which recorded only DenyPaths).
|
|
#>
|
|
param([string]$WorkerServiceName = 'OtOpcUaScriptWorker')
|
|
$key = "HKLM:\SYSTEM\CurrentControlSet\Services\$WorkerServiceName\Parameters"
|
|
if (-not (Test-Path -LiteralPath $key)) { return $null }
|
|
$v = Get-ItemProperty -LiteralPath $key -ErrorAction SilentlyContinue
|
|
if (-not $v) { return $null }
|
|
$get = { param($n) if ($v.PSObject.Properties[$n]) { $v.$n } else { $null } }
|
|
$root = & $get 'InstallRoot'; $account = & $get 'HostServiceAccount'
|
|
if (-not $root -or -not $account) { return $null }
|
|
@{
|
|
InstallRoot = [string]$root
|
|
HostServiceAccount = [string]$account
|
|
PeCacheDir = [string](& $get 'PeCacheDir')
|
|
HostServiceName = $(if (& $get 'HostServiceName') { [string](& $get 'HostServiceName') } else { 'OtOpcUaHost' })
|
|
ConfigureHostService = [bool][int](& $get 'ConfigureHostService')
|
|
DenyPaths = @(& $get $script:DenyRecordValue | Where-Object { $_ })
|
|
}
|
|
}
|
|
|
|
function Test-ScriptWorkerIsolationStep {
|
|
<#
|
|
.SYNOPSIS
|
|
Checks one INSTALL plan step against the machine without changing anything (lmxopcua#901, -Verify). Returns
|
|
[pscustomobject]@{ Ok; Detail }. Windows only.
|
|
#>
|
|
[CmdletBinding()]
|
|
param([Parameter(Mandatory)] $Step)
|
|
$d = $Step.Data
|
|
$result = { param([bool]$Ok, [string]$Detail) [pscustomobject]@{ Ok = $Ok; Detail = $Detail } }
|
|
switch ($Step.Id) {
|
|
'AnchorService' {
|
|
$cfg = Get-CimInstance Win32_Service -Filter "Name='$($d.Name)'" -ErrorAction SilentlyContinue
|
|
if (-not $cfg) { return (& $result $false "service '$($d.Name)' not found") }
|
|
$ok = $cfg.StartMode -eq 'Disabled' -and $cfg.StartName -ieq $d.Identity -and $cfg.PathName -eq "`"$($d.BinPath)`""
|
|
return (& $result $ok "StartMode=$($cfg.StartMode) StartName=$($cfg.StartName) PathName=$($cfg.PathName)")
|
|
}
|
|
'DenyPathRecord' {
|
|
$current = @(Get-OtOpcUaRecordedDenyPaths -Key $d.Key -Name $d.Name)
|
|
$ok = (@($current) -join "`n") -ceq (@($d.Paths) -join "`n")
|
|
return (& $result $ok "recorded: $(if ($current.Count) { $current -join '; ' } else { 'none' })")
|
|
}
|
|
'SettingsRecord' {
|
|
if (-not (Test-Path -LiteralPath $d.Key)) { return (& $result $false 'record key missing') }
|
|
$v = Get-ItemProperty -LiteralPath $d.Key
|
|
$bad = @(foreach ($n in @($d.Settings.Keys)) {
|
|
if (-not $v.PSObject.Properties[$n] -or "$($v.$n)" -cne "$($d.Settings[$n])") { $n }
|
|
})
|
|
$aclOk = Test-OtOpcUaRecordKeyAcl -Key $d.Key -Sddl $d.Sddl
|
|
if (-not $aclOk) { $bad += 'key ACL (want SYSTEM + Administrators only, protected)' }
|
|
return (& $result ($bad.Count -eq 0) $(if ($bad.Count) { "differs: $($bad -join ', ')" } else { 'settings recorded, key locked' }))
|
|
}
|
|
'PeCacheDir' {
|
|
if (-not (Test-Path -LiteralPath $d.Path)) { return (& $result $false 'missing') }
|
|
$desired = [System.Security.AccessControl.DirectorySecurity]::new()
|
|
$desired.SetSecurityDescriptorSddlForm($d.Sddl, 'Access, Owner')
|
|
$current = (Get-Acl -LiteralPath $d.Path).GetSecurityDescriptorSddlForm('Access, Owner')
|
|
return (& $result ($current -eq $desired.GetSecurityDescriptorSddlForm('Access, Owner')) "SDDL $current")
|
|
}
|
|
{ $_ -in 'PeEntriesDir', 'WorkerFolderAcl', 'InstallRootDeny', 'SensitiveDirDeny' } {
|
|
if (-not (Test-Path -LiteralPath $d.Path)) {
|
|
if ($d.ContainsKey('Remove')) { return (& $result $true 'absent') }
|
|
return (& $result $false 'folder missing')
|
|
}
|
|
$state = if ($d.ContainsKey('Remove')) { Get-OtOpcUaExplicitAceState -Path $d.Path -Sid $d.Sid -Remove }
|
|
else { Get-OtOpcUaExplicitAceState -Path $d.Path -Sid $d.Sid -Mask $d.Mask -Type $d.Type }
|
|
$want = if ($d.ContainsKey('Remove')) { 'none' } else { '{0} 0x{1:x} ContainerInherit, ObjectInherit' -f $d.Type, $d.Mask }
|
|
return (& $result $state.Same "explicit worker ACE: $($state.Found) (want $want)")
|
|
}
|
|
'FirewallBlockOutbound' {
|
|
$rule = Get-NetFirewallRule -Name $d.Name -ErrorAction SilentlyContinue
|
|
if (-not $rule) { return (& $result $false "rule '$($d.Name)' missing") }
|
|
$app = ($rule | Get-NetFirewallApplicationFilter).Program
|
|
$ok = "$($rule.Direction)" -eq 'Outbound' -and "$($rule.Action)" -eq 'Block' -and "$($rule.Enabled)" -eq 'True' -and
|
|
"$($rule.Profile)" -eq 'Any' -and $app -ieq $d.Program
|
|
if ($ok -and -not (Test-Path -LiteralPath $d.Program)) { return (& $result $false "rule ok but $($d.Program) is missing") }
|
|
return (& $result $ok "$($rule.Direction)/$($rule.Action)/$($rule.Profile)/enabled=$($rule.Enabled) program=$app")
|
|
}
|
|
'HostServiceEnv' {
|
|
$key = "HKLM:\SYSTEM\CurrentControlSet\Services\$($d.Service)"
|
|
if (-not (Test-Path $key)) { return (& $result $false "service '$($d.Service)' not installed") }
|
|
$current = @((Get-ItemProperty -Path $key -Name Environment -ErrorAction SilentlyContinue).Environment | Where-Object { $_ })
|
|
$missing = @(foreach ($k in $d.Set.Keys) { if ($current -notcontains "$k=$($d.Set[$k])") { $k } })
|
|
return (& $result ($missing.Count -eq 0) $(if ($missing.Count) { "missing or different: $($missing -join ', ')" } else { 'both entries present' }))
|
|
}
|
|
default { throw "unknown plan step '$($Step.Id)'" }
|
|
}
|
|
}
|
|
|
|
function Find-OtOpcUaDenyCoverageGap {
|
|
<#
|
|
.SYNOPSIS
|
|
After the denies are applied (lmxopcua#890): the files and folders under $Path that the inherited deny does NOT
|
|
reach because their DACL is protected (inheritance switched off, e.g. a store that sets its own ACL on a private
|
|
key) and that carry no explicit deny of their own. Each one is reported as a WARN; the operator decides.
|
|
$Skip (script-worker\) is not walked.
|
|
#>
|
|
param([Parameter(Mandatory)] [string]$Path, [Parameter(Mandatory)] [string]$WorkerSid, [string[]]$Skip = @())
|
|
if (-not (Test-Path -LiteralPath $Path)) { return }
|
|
$identity = [System.Security.Principal.SecurityIdentifier]::new($WorkerSid)
|
|
foreach ($item in @(Get-ChildItem -LiteralPath $Path -Recurse -Force -ErrorAction SilentlyContinue)) {
|
|
if (@($Skip | Where-Object { $_ -and (Test-OtOpcUaPathWithin -Path $item.FullName -Ancestor $_) }).Count) { continue }
|
|
try { $acl = Get-Acl -LiteralPath $item.FullName } catch { continue }
|
|
if (-not $acl.AreAccessRulesProtected) { continue }
|
|
$explicitDeny = @($acl.GetAccessRules($true, $false, [System.Security.Principal.SecurityIdentifier]) |
|
|
Where-Object { $_.IdentityReference -eq $identity -and $_.AccessControlType -eq 'Deny' })
|
|
if ($explicitDeny.Count -eq 0) { $item.FullName }
|
|
}
|
|
}
|
|
|
|
Export-ModuleMember -Function Get-OtOpcUaServiceSid, Get-OtOpcUaPeCacheSddl, Get-OtOpcUaPeEntriesAce,
|
|
Get-OtOpcUaScriptWorkerFolderAce, Get-OtOpcUaInstallRootDenyAce, Resolve-OtOpcUaDenyPaths, Get-ScriptWorkerIsolationPlan,
|
|
Invoke-ScriptWorkerIsolationStep, Get-OtOpcUaRecordedDenyPaths, Find-OtOpcUaDenyCoverageGap, Get-OtOpcUaIsolationSettings,
|
|
Test-ScriptWorkerIsolationStep, Test-OtOpcUaRecordKeyAcl
|