CocoaExtension // Add Bundle.getCodeSignedDate().

Packages/vChewing_CocoaExtension/Sources/CocoaExtension/CocoaExtension_Misc.swift

@@ -9,6 +9,35 @@
 import AppKit
 import SwiftExtension
 
+// MARK: - Get Bundle Signature Timestamp
+
+public extension Bundle {
+  func getCodeSignedDate() -> Date? {
+    var code: SecStaticCode?
+    var information: CFDictionary?
+    let status4Code = SecStaticCodeCreateWithPath(bundleURL as CFURL, SecCSFlags(rawValue: 0), &code)
+    guard status4Code == 0, let code = code else {
+      NSLog("Error from getCodeSignedDate(): Failed from retrieving status4Code.")
+      return nil
+    }
+    let status = SecCodeCopySigningInformation(code, SecCSFlags(rawValue: kSecCSSigningInformation), &information)
+    guard status == noErr else {
+      NSLog("Error from getCodeSignedDate(): Failed from retrieving code signing intelligence.")
+      return nil
+    }
+    guard let dictionary = information as? [String: NSObject] else { return nil }
+    guard dictionary[kSecCodeInfoIdentifier as String] != nil else {
+      NSLog("Error from getCodeSignedDate(): Target not signed.")
+      return nil
+    }
+    guard let infoDate = dictionary[kSecCodeInfoTimestamp as String] as? Date else {
+      NSLog("Error from getCodeSignedDate(): Target signing timestamp is missing.")
+      return nil
+    }
+    return infoDate as Date
+  }
+}
+
 // MARK: - NSSize extension
 
 public extension NSSize {