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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| import Foundation | ||
| import Security | ||
| import SwiftUI | ||
|
|
||
| struct Keychain { | ||
| let service: String | ||
|
|
||
| private var query: [CFString: Any] { | ||
| [ | ||
| kSecClass: kSecClassGenericPassword, | ||
| kSecMatchLimit: kSecMatchLimitOne, | ||
| kSecAttrLabel: Config.default.app.name, | ||
| kSecAttrService: service, | ||
| ] | ||
| } | ||
|
|
||
| func get() -> String { | ||
| var info = query | ||
| info[kSecReturnData] = true | ||
| var itemReference: CFTypeRef? | ||
| guard SecItemCopyMatching(info as CFDictionary, &itemReference) == errSecSuccess, | ||
| let data = itemReference as? Data, | ||
| let value = String(data: data, encoding: .utf8) | ||
| else { return "" } | ||
| return value | ||
| } | ||
|
|
||
| @KeychainActor | ||
| func set(_ value: String) -> Bool { | ||
| guard !value.isEmpty else { return delete() } | ||
| let data = value.data(using: .utf8) | ||
|
|
||
| if SecItemUpdate(query as CFDictionary, [kSecValueData: data] as CFDictionary) == errSecSuccess { | ||
| return true | ||
| } else { | ||
| var info = query | ||
| info[kSecValueData] = data | ||
| return SecItemAdd(info as CFDictionary, nil) == errSecSuccess | ||
| } | ||
| } | ||
|
|
||
| @KeychainActor | ||
| func delete() -> Bool { | ||
| return SecItemDelete(query as CFDictionary) == errSecSuccess | ||
| } | ||
| } | ||
|
|
||
| @globalActor | ||
| actor KeychainActor: GlobalActor { | ||
| static let shared = KeychainActor() | ||
| } | ||
|
|
||
| @propertyWrapper | ||
| struct KeychainStorage: DynamicProperty { | ||
| @ObservedObject | ||
| private var cache: KeychainCache | ||
|
|
||
| private let keychain: Keychain | ||
|
|
||
| var wrappedValue: String { | ||
| get { | ||
| cache.value | ||
| } | ||
|
|
||
| nonmutating set(value) { | ||
| cache.value = value | ||
|
|
||
| Task { | ||
| await keychain.set(value) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| init(_ key: String) { | ||
| let cleanKey = key.replacing(".", with: ":") | ||
| keychain = .init(service: cleanKey) | ||
| cache = .shared(for: cleanKey, defaultValue: keychain.get()) | ||
| } | ||
| } | ||
|
|
||
| class KeychainCache: ObservableObject { | ||
| private static var instances: [String: KeychainCache] = [:] | ||
|
|
||
| private let key: String | ||
|
|
||
| @Published | ||
| var value: String | ||
|
|
||
| init(key: String, defaultValue: String) { | ||
| self.key = key | ||
| value = defaultValue | ||
| } | ||
|
|
||
| static func shared(for key: String, defaultValue: String) -> KeychainCache { | ||
| if let instance = instances[key] { | ||
| return instance | ||
| } | ||
|
|
||
| let instance = KeychainCache(key: key, defaultValue: defaultValue) | ||
| instances[key] = instance | ||
| return instance | ||
| } | ||
| } |
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