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Fallback migrator for users impacted by enabling the credential befor…
…e the app could perform migration on app version 7.149.0
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| // | ||
| // AutofillVaultKeychainMigrator.swift | ||
| // DuckDuckGo | ||
| // | ||
| // 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 BrowserServicesKit | ||
| import os.log | ||
|
|
||
| public struct AutofillVaultKeychainMigrator { | ||
|
|
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| public init() {} | ||
|
|
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| public func resetVaultMigrationIfRequired(fileManager: FileManager = FileManager.default) { | ||
| let originalVaultLocation = DefaultAutofillDatabaseProvider.defaultDatabaseURL() | ||
| let sharedVaultLocation = DefaultAutofillDatabaseProvider.defaultSharedDatabaseURL() | ||
|
|
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| // only care about users who have have both the original and migrated vaults | ||
| guard fileManager.fileExists(atPath: originalVaultLocation.path), | ||
| fileManager.fileExists(atPath: sharedVaultLocation.path) else { | ||
| return | ||
| } | ||
|
|
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| let hasV4Items = hasKeychainItemsMatching(serviceName: "DuckDuckGo Secure Vault v4") | ||
|
|
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| guard hasV4Items else { | ||
| return | ||
| } | ||
|
|
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| let hasV3Items = hasKeychainItemsMatching(serviceName: "DuckDuckGo Secure Vault v3") | ||
| let hasV2Items = hasKeychainItemsMatching(serviceName: "DuckDuckGo Secure Vault v2") | ||
| let hasV1Items = hasKeychainItemsMatching(serviceName: "DuckDuckGo Secure Vault") | ||
|
|
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| // Only continue if there are original keychain items to migrate from | ||
| guard hasV1Items || hasV2Items || hasV3Items else { | ||
| return | ||
| } | ||
|
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| deleteKeychainItems(matching: "DuckDuckGo Secure Vault v4") | ||
| let backupFilePath = sharedVaultLocation.appendingPathExtension("bak") | ||
| do { | ||
| // Creating a backup of the migrated file | ||
| try fileManager.moveItem(at: sharedVaultLocation, to: backupFilePath) | ||
| Logger.autofill.info("Move migrated file to backup \(backupFilePath.path)") | ||
| } catch { | ||
| Logger.autofill.error("Failed to create backup of migrated file: \(error.localizedDescription)") | ||
| return | ||
| } | ||
| } | ||
|
|
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| private func hasKeychainItemsMatching(serviceName: String) -> Bool { | ||
| let query: [String: Any] = [ | ||
| kSecClass as String: kSecClassGenericPassword, | ||
| kSecReturnAttributes as String: true, | ||
| kSecMatchLimit as String: kSecMatchLimitAll | ||
| ] | ||
|
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| var result: AnyObject? | ||
|
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| let status = SecItemCopyMatching(query as CFDictionary, &result) | ||
|
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| if status == errSecSuccess, let items = result as? [[String: Any]] { | ||
| for item in items { | ||
| if let service = item[kSecAttrService as String] as? String, | ||
| service.lowercased() == serviceName.lowercased() { | ||
| Logger.autofill.debug("Found keychain items matching service name: \(serviceName)") | ||
| return true | ||
| } | ||
| } | ||
| } | ||
|
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| return false | ||
| } | ||
|
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| private func deleteKeychainItems(matching serviceName: String) { | ||
| let deleteQuery: [String: Any] = [ | ||
| kSecClass as String: kSecClassGenericPassword, | ||
| kSecAttrService as String: serviceName | ||
| ] | ||
|
|
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| let deleteStatus = SecItemDelete(deleteQuery as CFDictionary) | ||
| if deleteStatus == errSecSuccess { | ||
| Logger.autofill.debug("Deleted keychain item: \(serviceName)") | ||
| } else { | ||
| Logger.autofill.debug("Failed to delete keychain item: \(serviceName), error: \(deleteStatus)") | ||
| } | ||
| } | ||
| } |
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