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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1 +1 @@ | ||
| CURRENT_PROJECT_VERSION = 247 | ||
| CURRENT_PROJECT_VERSION = 248 |
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| // | ||
| // BinaryOwnershipChecker.swift | ||
| // | ||
| // Copyright © 2024 DuckDuckGo. All rights reserved. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
| // | ||
|
|
||
| import Foundation | ||
| import Common | ||
|
|
||
| protocol BinaryOwnershipChecking { | ||
| func isCurrentUserOwner() -> Bool | ||
| } | ||
|
|
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| /// A class responsible for checking whether the current user owns the binary of the app. | ||
| /// The result is cached after the first check to avoid repeated file system access. | ||
| final class BinaryOwnershipChecker: BinaryOwnershipChecking { | ||
|
|
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| private let fileManager: FileManager | ||
| private var ownershipCache: Bool? | ||
|
|
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| init(fileManager: FileManager = .default) { | ||
| self.fileManager = fileManager | ||
| } | ||
|
|
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| /// Checks if the current user owns the binary of the currently running app. | ||
| /// The method caches the result after the first check to improve performance on subsequent calls. | ||
| /// - Returns: `true` if the current user is the owner, `false` otherwise. | ||
| func isCurrentUserOwner() -> Bool { | ||
| if let cachedResult = ownershipCache { | ||
| return cachedResult | ||
| } | ||
|
|
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| guard let binaryPath = Bundle.main.executablePath else { | ||
| os_log("Failed to get the binary path", log: .updates) | ||
| ownershipCache = false | ||
| return false | ||
| } | ||
|
|
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| do { | ||
| let attributes = try fileManager.attributesOfItem(atPath: binaryPath) | ||
| if let ownerID = attributes[FileAttributeKey.ownerAccountID] as? NSNumber { | ||
| let isOwner = ownerID.intValue == getuid() | ||
| ownershipCache = isOwner | ||
| return isOwner | ||
| } | ||
| } catch { | ||
| os_log("Failed to get binary file attributes: %{public}@", | ||
| log: .updates, | ||
| error.localizedDescription) | ||
| } | ||
|
|
||
| ownershipCache = false | ||
| return false | ||
| } | ||
| } |
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