wireguard-apple/WireGuard/Shared/FileManager+Extension.swift

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// SPDX-License-Identifier: MIT
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// Copyright © 2018-2019 WireGuard LLC. All Rights Reserved.
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import Foundation
import os.log
extension FileManager {
static var appGroupId: String? {
#if os(iOS)
let appGroupIdInfoDictionaryKey = "com.wireguard.ios.app_group_id"
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#elseif os(macOS)
let appGroupIdInfoDictionaryKey = "com.wireguard.macos.app_group_id"
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#else
#error("Unimplemented")
#endif
return Bundle.main.object(forInfoDictionaryKey: appGroupIdInfoDictionaryKey) as? String
}
private static var sharedFolderURL: URL? {
guard let appGroupId = FileManager.appGroupId else {
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os_log("Cannot obtain app group ID from bundle", log: OSLog.default, type: .error)
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return nil
}
guard let sharedFolderURL = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: appGroupId) else {
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wg_log(.error, message: "Cannot obtain shared folder URL")
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return nil
}
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return sharedFolderURL
}
static var networkExtensionLogFileURL: URL? {
return sharedFolderURL?.appendingPathComponent("tunnel-log.bin")
}
static var networkExtensionLastErrorFileURL: URL? {
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return sharedFolderURL?.appendingPathComponent("last-error.txt")
}
static var appLogFileURL: URL? {
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guard let documentDirURL = FileManager.default.urls(for: .cachesDirectory, in: .userDomainMask).first else {
wg_log(.error, message: "Cannot obtain app documents folder URL")
return nil
}
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return documentDirURL.appendingPathComponent("app-log.bin")
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}
static func deleteFile(at url: URL) -> Bool {
do {
try FileManager.default.removeItem(at: url)
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} catch {
return false
}
return true
}
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}