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3950cac085
* New LICENSE-COMMERCIAL file * Apply dual licenses: AGPL + Element Commercial to file headers * Update README with dual licensing
37 lines
1.3 KiB
Swift
37 lines
1.3 KiB
Swift
//
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// Copyright 2022-2024 New Vector Ltd.
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//
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// SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
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// Please see LICENSE files in the repository root for full details.
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//
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import Foundation
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enum DataProtectionManager {
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/// Detects after reboot, before unlocked state. Does this by trying to write a file to the filesystem (to the Caches directory) and read it back.
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/// - Parameter containerURL: Container url to write the file.
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/// - Returns: true if the state detected
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static func isDeviceLockedAfterReboot(containerURL: URL) -> Bool {
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let dummyString = ProcessInfo.processInfo.globallyUniqueString
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guard let dummyData = dummyString.data(using: .utf8) else {
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return true
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}
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do {
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// add a unique filename
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let url = containerURL.appendingPathComponent(ProcessInfo.processInfo.globallyUniqueString)
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try dummyData.write(to: url, options: .completeFileProtectionUntilFirstUserAuthentication)
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let readData = try Data(contentsOf: url)
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let readString = String(data: readData, encoding: .utf8)
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try FileManager.default.removeItem(at: url)
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if readString != dummyString {
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return true
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}
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} catch {
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return true
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}
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return false
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}
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}
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