feat: moved from the AppleScript for asking a root access when manipulating the fans to the Helper (SMJobBless + XPC) (#1173)

2026-04-14 00:04:15 +09:00 · 2022-11-18 22:51:34 +01:00
parent ed737fe0b4
commit e9bc4cc5d3
12 changed files with 443 additions and 64 deletions
--- a/Kit/helpers.swift
+++ b/Kit/helpers.swift
@@ -1002,66 +1002,127 @@ public class SettingsContainerView: NSStackView {

 public class SMCHelper {
    public static let shared = SMCHelper()
-    private let smc: String
-    
-    public init() {
-        self.smc = Bundle.main.path(forResource: "smc", ofType: nil)!
-    }
+    private var connection: NSXPCConnection? = nil
    
    public func setFanSpeed(_ id: Int, speed: Int) {
-        if !self.checkRights() {
-            if !self.ensureRights() {
-                return
+        helperStatus { installed in
+            if !installed {
+                self.install()
+            }
+            guard let helper = self.helper(nil) else { return }
+            
+            helper.setFanSpeed(id: id, value: speed) { result in
+                if let result, !result.isEmpty {
+                    print(result)
+                }
            }
        }
-        
-        _ = syncShell("\(self.smc) fan -id \(id) -v \(speed)")
    }
    
    public func setFanMode(_ id: Int, mode: Int) {
-        if !self.checkRights() {
-            if !self.ensureRights() {
-                return
-            }
-        }
-        
-        _ = syncShell("\(self.smc) fan -id \(id) -m \(mode)")
-    }
-    
-    public func checkRights() -> Bool {
-        do {
-            let attributes = try FileManager.default.attributesOfItem(atPath: self.smc)
-            guard let owner = attributes[FileAttributeKey(rawValue: "NSFileOwnerAccountName")] as? String,
-                  let ownerGroup = attributes[FileAttributeKey(rawValue: "NSFileGroupOwnerAccountName")] as? String,
-                  let permissions = attributes[FileAttributeKey(rawValue: "NSFilePosixPermissions")]  as? Int else {
-                print("some of the smc attributes is missing")
-                return false
+        helperStatus { installed in
+            if !installed {
+                self.install()
            }
+            guard let helper = self.helper(nil) else { return }
            
-            if owner == "root" && ownerGroup == "admin" && permissions == 3437 {
-                return true
+            helper.setFanMode(id: id, mode: mode) { result in
+                if let result, !result.isEmpty {
+                    print(result)
+                }
            }
-        } catch let error {
-            print("get smc attributes, \(error)")
-            return false
        }
-        
-        return false
    }
    
-    private func ensureRights() -> Bool {
-        guard let script = NSAppleScript(source: "do shell script \"/usr/sbin/chown root:admin \(self.smc) && /bin/chmod 6555 \(self.smc)\" with administrator privileges") else {
-            return false
+    public func isActive() -> Bool {
+        return self.connection != nil
+    }
+    
+    private func helperStatus(completion: @escaping (_ installed: Bool) -> Void) {
+        let helperURL = Bundle.main.bundleURL.appendingPathComponent("Contents/Library/LaunchServices/eu.exelban.Stats.SMC.Helper")
+        guard
+            let helperBundleInfo = CFBundleCopyInfoDictionaryForURL(helperURL as CFURL) as? [String: Any],
+            let helperVersion = helperBundleInfo["CFBundleShortVersionString"] as? String,
+            let helper = self.helper(completion) else {
+                completion(false)
+                return
        }
        
-        var err: NSDictionary? = nil
-        script.executeAndReturnError(&err)
-        if err != nil {
-            print("cannot upgrade owner to root: \(String(describing: err))")
-            return false
+        helper.version { installedHelperVersion in
+            completion(installedHelperVersion == helperVersion)
+        }
+    }
+    
+    private func install() {
+        var authRef: AuthorizationRef?
+        var authStatus = AuthorizationCreate(nil, nil, [.preAuthorize], &authRef)
+        
+        guard authStatus == errAuthorizationSuccess else {
+            print("Unable to get a valid empty authorization reference to load Helper daemon")
+            return
        }
        
-        return true
+        let authItem = kSMRightBlessPrivilegedHelper.withCString { authorizationString in
+            AuthorizationItem(name: authorizationString, valueLength: 0, value: nil, flags: 0)
+        }
+        
+        let pointer = UnsafeMutablePointer<AuthorizationItem>.allocate(capacity: 1)
+        pointer.initialize(to: authItem)
+        
+        defer {
+            pointer.deinitialize(count: 1)
+            pointer.deallocate()
+        }
+        
+        var authRights = AuthorizationRights(count: 1, items: pointer)
+        
+        let flags: AuthorizationFlags = [.interactionAllowed, .extendRights, .preAuthorize]
+        authStatus = AuthorizationCreate(&authRights, nil, flags, &authRef)
+        
+        guard authStatus == errAuthorizationSuccess else {
+            print("Unable to get a valid loading authorization reference to load Helper daemon")
+            return
+        }
+        
+        var error: Unmanaged<CFError>?
+        if SMJobBless(kSMDomainUserLaunchd, "eu.exelban.Stats.SMC.Helper" as CFString, authRef, &error) == false {
+            let blessError = error!.takeRetainedValue() as Error
+                print("Error while installing the Helper: \(blessError.localizedDescription)")
+            return
+        }
+        
+        AuthorizationFree(authRef!, [])
+    }
+    
+    private func helperConnection() -> NSXPCConnection? {
+        guard self.connection == nil else {
+            return self.connection
+        }
+        
+        let connection = NSXPCConnection(machServiceName: "eu.exelban.Stats.SMC.Helper", options: .privileged)
+        connection.exportedObject = self
+        connection.remoteObjectInterface = NSXPCInterface(with: HelperProtocol.self)
+        connection.invalidationHandler = {
+            self.connection?.invalidationHandler = nil
+            OperationQueue.main.addOperation {
+                self.connection = nil
+            }
+        }
+        
+        self.connection = connection
+        self.connection?.resume()
+        
+        return self.connection
+    }
+    
+    private func helper(_ completion: ((Bool) -> Void)?) -> HelperProtocol? {
+        guard let helper = self.helperConnection()?.remoteObjectProxyWithErrorHandler({ _ in
+            if let onCompletion = completion { onCompletion(false) }
+        }) as? HelperProtocol else { return nil }
+        
+        helper.setSMCPath(Bundle.main.path(forResource: "smc", ofType: nil)!)
+        
+        return helper
    }
 }

--- a/Kit/scripts/uninstall.sh
+++ b/Kit/scripts/uninstall.sh
@@ -0,0 +1,5 @@
+#! /bin/sh
+
+sudo launchctl unload /Library/LaunchDaemons/eu.exelban.Stats.SMC.Helper.plist
+sudo rm /Library/LaunchDaemons/eu.exelban.Stats.SMC.Helper.plist
+sudo rm /Library/PrivilegedHelperTools/eu.exelban.Stats.SMC.Helper
--- a/Modules/Sensors/main.swift
+++ b/Modules/Sensors/main.swift
@@ -57,9 +57,7 @@ public class Sensors: Module {
    }
    
    public override func willTerminate() {
-        if !SMCHelper.shared.checkRights() {
-            return
-        }
+        guard SMCHelper.shared.isActive() else { return }
        
        self.sensorsReader.list.filter({ $0 is Fan }).forEach { (s: Sensor_p) in
            if let f = s as? Fan, let mode = f.customMode {
--- a/Modules/Sensors/popup.swift
+++ b/Modules/Sensors/popup.swift
@@ -313,9 +313,7 @@ internal class FanView: NSStackView {
    private var maxBtn: NSButton? = nil
    
    private var speedState: Bool {
-        get {
-            return Store.shared.bool(key: "Sensors_speed", defaultValue: false)
-        }
+        Store.shared.bool(key: "Sensors_speed", defaultValue: false)
    }
    private var speed: Double {
        get {
@@ -328,9 +326,7 @@ internal class FanView: NSStackView {
    private var resetModeAfterSleep: Bool = false
    
    private var horizontalMargin: CGFloat {
-        get {
-            return self.edgeInsets.top + self.edgeInsets.bottom + (self.spacing*CGFloat(self.arrangedSubviews.count))
-        }
+        self.edgeInsets.top + self.edgeInsets.bottom + (self.spacing*CGFloat(self.arrangedSubviews.count))
    }
    
    private var willSleepMode: FanMode? = nil
@@ -634,7 +630,7 @@ internal class FanView: NSStackView {
    }
    
    @objc private func sleepListener(aNotification: NSNotification) {
-        guard SMCHelper.shared.checkRights() && self.fan.customMode != .automatic else { return }
+        guard SMCHelper.shared.isActive() && self.fan.customMode != .automatic else { return }
        
        self.willSleepMode = self.fan.customMode
        self.willSleepSpeed = self.fan.customSpeed
--- a/SMC/Helper/Info.plist
+++ b/SMC/Helper/Info.plist
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleIdentifier</key>
+	<string>eu.exelban.Stats.SMC.Helper</string>
+	<key>CFBundleName</key>
+	<string>eu.exelban.Stats.SMC.Helper</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>SMAuthorizedClients</key>
+	<array>
+		<string>identifier &quot;eu.exelban.Stats&quot; and anchor apple generic and certificate 1[field.1.2.840.113635.100.6.2.1] /* exists */</string>
+	</array>
+</dict>
+</plist>
--- a/SMC/Helper/Launchd.plist
+++ b/SMC/Helper/Launchd.plist
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>Label</key>
+	<string>eu.exelban.Stats.SMC.Helper</string>
+	<key>MachServices</key>
+	<dict>
+		<key>eu.exelban.Stats.SMC.Helper</key>
+		<true/>
+	</dict>
+</dict>
+</plist>
--- a/SMC/Helper/main.swift
+++ b/SMC/Helper/main.swift
@@ -0,0 +1,97 @@
+//
+//  main.swift
+//  Helper
+//
+//  Created by Serhiy Mytrovtsiy on 17/11/2022
+//  Using Swift 5.0
+//  Running on macOS 13.0
+//
+//  Copyright © 2022 Serhiy Mytrovtsiy. All rights reserved.
+//
+
+import Foundation
+
+let helper = Helper()
+helper.run()
+
+class Helper: NSObject, NSXPCListenerDelegate, HelperProtocol {
+    private let listener: NSXPCListener
+    
+    private var connections = [NSXPCConnection]()
+    private var shouldQuit = false
+    private var shouldQuitCheckInterval = 1.0
+    
+    private var smc: String? = nil
+    
+    override init() {
+        self.listener = NSXPCListener(machServiceName: "eu.exelban.Stats.SMC.Helper")
+        super.init()
+        self.listener.delegate = self
+    }
+    
+    public func run() {
+        self.listener.resume()
+        while !self.shouldQuit {
+            RunLoop.current.run(until: Date(timeIntervalSinceNow: self.shouldQuitCheckInterval))
+        }
+    }
+    
+    func listener(_ listener: NSXPCListener, shouldAcceptNewConnection connection: NSXPCConnection) -> Bool {
+        connection.exportedInterface = NSXPCInterface(with: HelperProtocol.self)
+        connection.exportedObject = self
+        connection.invalidationHandler = {
+            if let connectionIndex = self.connections.firstIndex(of: connection) {
+                self.connections.remove(at: connectionIndex)
+            }
+            if self.connections.isEmpty {
+                self.shouldQuit = true
+            }
+        }
+        
+        self.connections.append(connection)
+        connection.resume()
+        
+        return true
+    }
+}
+
+extension Helper {
+    func version(completion: (String) -> Void) {
+        completion(Bundle.main.object(forInfoDictionaryKey: "CFBundleShortVersionString") as? String ?? "0")
+    }
+    func setSMCPath(_ path: String) {
+        self.smc = path
+    }
+    
+    func setFanMode(id: Int, mode: Int, completion: (String?) -> Void) {
+        guard let smc = self.smc else {
+            completion("missing smc tool")
+            return
+        }
+        let result = syncShell("\(smc) fan \(id) -m \(mode)")
+        completion(result)
+    }
+    
+    func setFanSpeed(id: Int, value: Int, completion: (String?) -> Void) {
+        guard let smc = self.smc else {
+            completion("missing smc tool")
+            return
+        }
+        let result = syncShell("\(smc) fan \(id) -v \(value)")
+        completion(result)
+    }
+    
+    public func syncShell(_ args: String) -> String {
+        let task = Process()
+        task.launchPath = "/bin/sh"
+        task.arguments = ["-c", args]
+        let pipe = Pipe()
+        
+        task.standardOutput = pipe
+        task.launch()
+        task.waitUntilExit()
+        
+        let data = pipe.fileHandleForReading.readDataToEndOfFile()
+        return String(data: data, encoding: .utf8)!
+    }
+}
--- a/SMC/Helper/protocol.swift
+++ b/SMC/Helper/protocol.swift
@@ -0,0 +1,20 @@
+//
+//  protocol.swift
+//  Helper
+//
+//  Created by Serhiy Mytrovtsiy on 17/11/2022
+//  Using Swift 5.0
+//  Running on macOS 13.0
+//
+//  Copyright © 2022 Serhiy Mytrovtsiy. All rights reserved.
+//
+
+import Foundation
+
+@objc public protocol HelperProtocol {
+    func version(completion: @escaping (String) -> Void)
+    func setSMCPath(_ path: String)
+    
+    func setFanMode(id: Int, mode: Int, completion: @escaping (String?) -> Void)
+    func setFanSpeed(id: Int, value: Int, completion: @escaping (String?) -> Void)
+}
--- a/SMC/main.swift
+++ b/SMC/main.swift
@@ -97,25 +97,28 @@ func main() {
        
        print("[INFO]: set \(value) on \(key)")
    case .fan:
-        guard let idIndex = args.firstIndex(where: { $0 == "-id" }),
-              args.indices.contains(idIndex+1),
-              let id = Int(args[idIndex+1]) else {
-            print("[ERROR]: missing id")
+        guard let idString = args.first, let id = Int(idString) else {
+            print("[ERROR]: missing fan id")
            return
        }
+        var help: Bool = true
        
        if let index = args.firstIndex(where: { $0 == "-v" }), args.indices.contains(index+1), let value = Int(args[index+1]) {
            SMC.shared.setFanSpeed(id, speed: value)
-            return
+            help = false
        }
        
        if let index = args.firstIndex(where: { $0 == "-m" }), args.indices.contains(index+1),
           let raw = Int(args[index+1]), let mode = FanMode.init(rawValue: raw) {
            SMC.shared.setFanMode(id, mode: mode)
-            return
+            help = false
        }
        
-        print("[ERROR]: missing value or mode")
+        guard help else { return }
+        
+        print("Available Flags:")
+        print("  -m    change the fan mode: 0 - automatic, 1 - manual")
+        print("  -v    change the fan speed")
    case .fans:
        guard let count = SMC.shared.getValue("FNum") else {
            print("FNum not found")
--- a/Stats.xcodeproj/project.pbxproj
+++ b/Stats.xcodeproj/project.pbxproj
@@ -7,6 +7,12 @@
 	objects = {

 /* Begin PBXBuildFile section */
+		5C8E001029269C7F0027C75A /* protocol.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5CFE493829265055000F2856 /* protocol.swift */; };
+		5CFE492A29264DF1000F2856 /* main.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5CFE492929264DF1000F2856 /* main.swift */; };
+		5CFE493929265055000F2856 /* protocol.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5CFE493829265055000F2856 /* protocol.swift */; };
+		5CFE493D2926513E000F2856 /* eu.exelban.Stats.SMC.Helper in CopyFiles */ = {isa = PBXBuildFile; fileRef = 5CFE492729264DF1000F2856 /* eu.exelban.Stats.SMC.Helper */; settings = {ATTRIBUTES = (CodeSignOnCopy, ); }; };
+		5CFE494229265418000F2856 /* uninstall.sh in Resources */ = {isa = PBXBuildFile; fileRef = 5CFE494129265418000F2856 /* uninstall.sh */; };
+		5CFE494429265421000F2856 /* changelog.py in Resources */ = {isa = PBXBuildFile; fileRef = 5CFE494329265421000F2856 /* changelog.py */; };
 		9A045EB72594F8D100ED58F2 /* Dashboard.swift in Sources */ = {isa = PBXBuildFile; fileRef = 9A045EB62594F8D100ED58F2 /* Dashboard.swift */; };
 		9A11AAD6266FD77F000C1C05 /* Bluetooth.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 9A11AACF266FD77F000C1C05 /* Bluetooth.framework */; };
 		9A11AAD7266FD77F000C1C05 /* Bluetooth.framework in Embed Frameworks */ = {isa = PBXBuildFile; fileRef = 9A11AACF266FD77F000C1C05 /* Bluetooth.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
@@ -259,6 +265,25 @@
 /* End PBXContainerItemProxy section */

 /* Begin PBXCopyFilesBuildPhase section */
+		5CFE492529264DF1000F2856 /* CopyFiles */ = {
+			isa = PBXCopyFilesBuildPhase;
+			buildActionMask = 2147483647;
+			dstPath = /usr/share/man/man1/;
+			dstSubfolderSpec = 0;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 1;
+		};
+		5CFE493C29265130000F2856 /* CopyFiles */ = {
+			isa = PBXCopyFilesBuildPhase;
+			buildActionMask = 2147483647;
+			dstPath = Contents/Library/LaunchServices;
+			dstSubfolderSpec = 1;
+			files = (
+				5CFE493D2926513E000F2856 /* eu.exelban.Stats.SMC.Helper in CopyFiles */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		9A46BF89266D7CFA001A1117 /* CopyFiles */ = {
 			isa = PBXCopyFilesBuildPhase;
 			buildActionMask = 2147483647;
@@ -317,6 +342,13 @@
 		30370F8F253DCBC0006404D8 /* zh-Hant */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = "zh-Hant"; path = "zh-Hant.lproj/Localizable.strings"; sourceTree = "<group>"; };
 		40BE2B202745D63800AE9396 /* da */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = da; path = da.lproj/Localizable.strings; sourceTree = "<group>"; };
 		4921436D25319699000A1C47 /* ko */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = ko; path = ko.lproj/Localizable.strings; sourceTree = "<group>"; };
+		5CFE492729264DF1000F2856 /* eu.exelban.Stats.SMC.Helper */ = {isa = PBXFileReference; explicitFileType = "compiled.mach-o.executable"; includeInIndex = 0; path = eu.exelban.Stats.SMC.Helper; sourceTree = BUILT_PRODUCTS_DIR; };
+		5CFE492929264DF1000F2856 /* main.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = main.swift; sourceTree = "<group>"; };
+		5CFE493829265055000F2856 /* protocol.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = protocol.swift; sourceTree = "<group>"; };
+		5CFE493A292650BD000F2856 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
+		5CFE493B292650F8000F2856 /* Launchd.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Launchd.plist; sourceTree = "<group>"; };
+		5CFE494129265418000F2856 /* uninstall.sh */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.script.sh; path = uninstall.sh; sourceTree = "<group>"; };
+		5CFE494329265421000F2856 /* changelog.py */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.script.python; path = changelog.py; sourceTree = "<group>"; };
 		62BA5F74254810C8009D0AC2 /* es */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = es; path = es.lproj/Localizable.strings; sourceTree = "<group>"; };
 		63A07F97275018DF00352C46 /* ca */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = ca; path = ca.lproj/Localizable.strings; sourceTree = "<group>"; };
 		7A19DAE52552C326001B192F /* fr */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = fr; path = fr.lproj/Localizable.strings; sourceTree = "<group>"; };
@@ -463,6 +495,13 @@
 /* End PBXFileReference section */

 /* Begin PBXFrameworksBuildPhase section */
+		5CFE492429264DF1000F2856 /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		9A11AACC266FD77F000C1C05 /* Frameworks */ = {
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
@@ -575,6 +614,17 @@
 /* End PBXFrameworksBuildPhase section */

 /* Begin PBXGroup section */
+		5CFE492829264DF1000F2856 /* Helper */ = {
+			isa = PBXGroup;
+			children = (
+				5CFE492929264DF1000F2856 /* main.swift */,
+				5CFE493829265055000F2856 /* protocol.swift */,
+				5CFE493A292650BD000F2856 /* Info.plist */,
+				5CFE493B292650F8000F2856 /* Launchd.plist */,
+			);
+			path = Helper;
+			sourceTree = "<group>";
+		};
 		9A11AAD0266FD77F000C1C05 /* Bluetooth */ = {
 			isa = PBXGroup;
 			children = (
@@ -618,6 +668,7 @@
 				9A2846F72666A9CC00EC1F6D /* Kit.framework */,
 				9A11AACF266FD77F000C1C05 /* Bluetooth.framework */,
 				9AAC5E2A280ACC120043D892 /* Tests.xctest */,
+				5CFE492729264DF1000F2856 /* eu.exelban.Stats.SMC.Helper */,
 			);
 			name = Products;
 			sourceTree = "<group>";
@@ -716,7 +767,9 @@
 			isa = PBXGroup;
 			children = (
 				9A2848012666AB2F00EC1F6D /* updater.sh */,
+				5CFE494129265418000F2856 /* uninstall.sh */,
 				9A46BF35266D6E17001A1117 /* i18n.py */,
+				5CFE494329265421000F2856 /* changelog.py */,
 			);
 			path = scripts;
 			sourceTree = "<group>";
@@ -848,6 +901,7 @@
 		9ADE6FD9265D032100D2FBA8 /* SMC */ = {
 			isa = PBXGroup;
 			children = (
+				5CFE492829264DF1000F2856 /* Helper */,
 				9ADE6FDA265D032100D2FBA8 /* main.swift */,
 				9ADE7038265D059000D2FBA8 /* smc.swift */,
 			);
@@ -952,6 +1006,23 @@
 /* End PBXHeadersBuildPhase section */

 /* Begin PBXNativeTarget section */
+		5CFE492629264DF1000F2856 /* Helper */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = 5CFE492D29264DF1000F2856 /* Build configuration list for PBXNativeTarget "Helper" */;
+			buildPhases = (
+				5CFE492329264DF1000F2856 /* Sources */,
+				5CFE492429264DF1000F2856 /* Frameworks */,
+				5CFE492529264DF1000F2856 /* CopyFiles */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			name = Helper;
+			productName = Helper;
+			productReference = 5CFE492729264DF1000F2856 /* eu.exelban.Stats.SMC.Helper */;
+			productType = "com.apple.product-type.tool";
+		};
 		9A11AACE266FD77F000C1C05 /* Bluetooth */ = {
 			isa = PBXNativeTarget;
 			buildConfigurationList = 9A11AADA266FD77F000C1C05 /* Build configuration list for PBXNativeTarget "Bluetooth" */;
@@ -983,6 +1054,7 @@
 				9AECEF3D24ACF98800DB95D4 /* Copy Files */,
 				9A88E2672659002E00E2B7B0 /* ShellScript */,
 				9A46BF89266D7CFA001A1117 /* CopyFiles */,
+				5CFE493C29265130000F2856 /* CopyFiles */,
 			);
 			buildRules = (
 			);
@@ -1219,10 +1291,13 @@
 				KnownAssetTags = (
 					New,
 				);
-				LastSwiftUpdateCheck = 1240;
-				LastUpgradeCheck = 1400;
+				LastSwiftUpdateCheck = 1410;
+				LastUpgradeCheck = 1410;
 				ORGANIZATIONNAME = "Serhiy Mytrovtsiy";
 				TargetAttributes = {
+					5CFE492629264DF1000F2856 = {
+						CreatedOnToolsVersion = 14.1;
+					};
 					9A11AACE266FD77F000C1C05 = {
 						CreatedOnToolsVersion = 12.4;
 						LastSwiftMigration = 1240;
@@ -1340,6 +1415,7 @@
 				9AE29AD4249A50350071B02D /* Sensors */,
 				9A11AACE266FD77F000C1C05 /* Bluetooth */,
 				9AAC5E29280ACC120043D892 /* Tests */,
+				5CFE492629264DF1000F2856 /* Helper */,
 			);
 		};
 /* End PBXProject section */
@@ -1369,6 +1445,8 @@
 				9A46BF36266D6E17001A1117 /* i18n.py in Resources */,
 				9A2848892666AC0100EC1F6D /* Assets.xcassets in Resources */,
 				9A2848082666AB3000EC1F6D /* updater.sh in Resources */,
+				5CFE494229265418000F2856 /* uninstall.sh in Resources */,
+				5CFE494429265421000F2856 /* changelog.py in Resources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -1466,6 +1544,15 @@
 /* End PBXShellScriptBuildPhase section */

 /* Begin PBXSourcesBuildPhase section */
+		5CFE492329264DF1000F2856 /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				5CFE492A29264DF1000F2856 /* main.swift in Sources */,
+				5CFE493929265055000F2856 /* protocol.swift in Sources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		9A11AACB266FD77F000C1C05 /* Sources */ = {
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
@@ -1495,6 +1582,7 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				5C8E001029269C7F0027C75A /* protocol.swift in Sources */,
 				9AD7F866266F759200E5F863 /* smc.swift in Sources */,
 				9A2847612666AA2700EC1F6D /* PieChart.swift in Sources */,
 				9A2847672666AA2700EC1F6D /* BarChart.swift in Sources */,
@@ -1770,6 +1858,58 @@
 /* End PBXVariantGroup section */

 /* Begin XCBuildConfiguration section */
+		5CFE492B29264DF1000F2856 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++20";
+				CODE_SIGN_IDENTITY = "-";
+				CODE_SIGN_STYLE = Automatic;
+				DEVELOPMENT_TEAM = RP2S87B72W;
+				ENABLE_HARDENED_RUNTIME = YES;
+				INFOPLIST_FILE = "$(SRCROOT)/Helper/Info.plist";
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
+				"OTHER_LDFLAGS[arch=*]" = (
+					"-sectcreate",
+					__TEXT,
+					__info_plist,
+					"\"$(SRCROOT)/SMC/Helper/Info.plist\"",
+					"-sectcreate",
+					__TEXT,
+					__launchd_plist,
+					"\"$(SRCROOT)/SMC/Helper/Launchd.plist\"",
+				);
+				PRODUCT_NAME = eu.exelban.Stats.SMC.Helper;
+				SKIP_INSTALL = YES;
+				SWIFT_VERSION = 5.0;
+			};
+			name = Debug;
+		};
+		5CFE492C29264DF1000F2856 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++20";
+				CODE_SIGN_IDENTITY = "-";
+				CODE_SIGN_STYLE = Automatic;
+				DEVELOPMENT_TEAM = RP2S87B72W;
+				ENABLE_HARDENED_RUNTIME = YES;
+				INFOPLIST_FILE = "$(SRCROOT)/Helper/Info.plist";
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
+				"OTHER_LDFLAGS[arch=*]" = (
+					"-sectcreate",
+					__TEXT,
+					__info_plist,
+					"\"$(SRCROOT)/SMC/Helper/Info.plist\"",
+					"-sectcreate",
+					__TEXT,
+					__launchd_plist,
+					"\"$(SRCROOT)/SMC/Helper/Launchd.plist\"",
+				);
+				PRODUCT_NAME = eu.exelban.Stats.SMC.Helper;
+				SKIP_INSTALL = YES;
+				SWIFT_VERSION = 5.0;
+			};
+			name = Release;
+		};
 		9A11AAD8266FD77F000C1C05 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
@@ -2431,7 +2571,7 @@
 					"@executable_path/../Frameworks",
 					"@loader_path/../Frameworks",
 				);
-				MACOSX_DEPLOYMENT_TARGET = 10.15;
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
 				PRODUCT_BUNDLE_IDENTIFIER = io.serhiy.Stats.Tests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_VERSION = 5.0;
@@ -2453,7 +2593,7 @@
 					"@executable_path/../Frameworks",
 					"@loader_path/../Frameworks",
 				);
-				MACOSX_DEPLOYMENT_TARGET = 10.15;
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
 				PRODUCT_BUNDLE_IDENTIFIER = io.serhiy.Stats.Tests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_VERSION = 5.0;
@@ -2701,6 +2841,15 @@
 /* End XCBuildConfiguration section */

 /* Begin XCConfigurationList section */
+		5CFE492D29264DF1000F2856 /* Build configuration list for PBXNativeTarget "Helper" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				5CFE492B29264DF1000F2856 /* Debug */,
+				5CFE492C29264DF1000F2856 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
 		9A11AADA266FD77F000C1C05 /* Build configuration list for PBXNativeTarget "Bluetooth" */ = {
 			isa = XCConfigurationList;
 			buildConfigurations = (
--- a/Stats.xcodeproj/xcshareddata/xcschemes/Stats.xcscheme
+++ b/Stats.xcodeproj/xcshareddata/xcschemes/Stats.xcscheme
@@ -20,6 +20,20 @@
               ReferencedContainer = "container:Stats.xcodeproj">
            </BuildableReference>
         </BuildActionEntry>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "5CFE492629264DF1000F2856"
+               BuildableName = "eu.exelban.Stats.SMC.Helper"
+               BlueprintName = "Helper"
+               ReferencedContainer = "container:Stats.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
      </BuildActionEntries>
   </BuildAction>
   <TestAction
--- a/Files/Info.plist
+++ b/Files/Info.plist
@@ -39,5 +39,10 @@
 	<string>NSApplication</string>
 	<key>NSUserNotificationAlertStyle</key>
 	<string>alert</string>
+	<key>SMPrivilegedExecutables</key>
+	<dict>
+		<key>eu.exelban.Stats.SMC.Helper</key>
+		<string>identifier &quot;eu.exelban.Stats.SMC.Helper&quot; and anchor apple generic and certificate 1[field.1.2.840.113635.100.6.2.1] /* exists */</string>
+	</dict>
 </dict>
 </plist>