+/*
+ * Copyright (c) 2017 Apple Inc. All Rights Reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#import <Foundation/Foundation.h>
+#import "SOSEnsureBackup.h"
+#include <utilities/debugging.h>
+
+#if TARGET_OS_OSX || TARGET_OS_IOS
+#import "keychain/ckks/CKKSLockStateTracker.h"
+#include <Security/SecureObjectSync/SOSAccount.h>
+#import <WirelessDiagnostics/WirelessDiagnostics.h>
+#import "keychain/analytics/awd/AWDMetricIds_Keychain.h"
+
+static NSOperationQueue *backupOperationQueue;
+static CKKSLockStateTracker *lockStateTracker;
+
+void SOSEnsureBackupWhileUnlocked(void) {
+ static dispatch_once_t onceToken;
+ dispatch_once(&onceToken, ^{
+ backupOperationQueue = [NSOperationQueue new];
+ lockStateTracker = [CKKSLockStateTracker new];
+ });
+
+ // CKKSLockStateTracker does not use @synchronized(self). If it ever starts to this needs to be updated.
+ @synchronized(lockStateTracker) {
+ if ([backupOperationQueue operationCount] > 0) {
+ secnotice("engine", "SOSEnsureBackup: Backup already scheduled for next unlock");
+ } else {
+ secnotice("engine", "SOSEnsureBackup: Scheduling a backup for next unlock");
+ NSBlockOperation *backupOperation = [NSBlockOperation blockOperationWithBlock:^{
+ secnotice("engine", "Performing keychain backup after unlock because backing up while locked failed");
+ SOSAccount *account = (__bridge SOSAccount *)(SOSKeychainAccountGetSharedAccount());
+ SOSAccountTransaction* transaction = [SOSAccountTransaction transactionWithAccount:account];
+ CFErrorRef error = NULL;
+ CFSetRef set = SOSAccountCopyBackupPeersAndForceSync(transaction, &error);
+ if (set) {
+ secnotice("engine", "SOSEnsureBackup: SOS made a backup of views: %@", set);
+ } else {
+ secerror("engine: SOSEnsureBackup: encountered an error while making backup (%@)", error);
+ }
+
+ CFReleaseNull(error);
+ CFReleaseNull(set);
+ }];
+ [backupOperation addDependency:lockStateTracker.unlockDependency];
+ [backupOperationQueue addOperation:backupOperation];
+ AWDPostSimpleMetric(AWDMetricId_Keychain_SOSKeychainBackupFailed);
+ }
+ }
+}
+#else
+void SOSEnsureBackupWhileUnlocked(void) {
+ secnotice("engine", "SOSEnsureBackup not available on this platform");
+}
+#endif
projects / apple / security.git / commitdiff
