Security-57740.51.3.tar.gz

[apple/security.git] / KeychainSyncingOverIDSProxy / IDSPersistentState.m

diff --git a/KeychainSyncingOverIDSProxy/IDSPersistentState.m b/KeychainSyncingOverIDSProxy/IDSPersistentState.m
new file mode 100644 (file)
index 0000000..0c88446
--- /dev/null
+++ b/KeychainSyncingOverIDSProxy/IDSPersistentState.m
@@ -0,0 +1,128 @@
+/*
+ * Copyright (c) 2012-2014 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@
+ */
+
+//
+//  IDSPersistentState.m
+//
+
+#import <Security/Security.h>
+#import <Foundation/NSPropertyList.h>
+#import <Foundation/NSArray.h>
+#import <Foundation/NSPropertyList.h>
+#import <Foundation/NSData.h>
+#import <Foundation/NSDictionary.h>
+#import <utilities/debugging.h>
+#import <utilities/SecFileLocations.h>
+
+#import "IDSPersistentState.h"
+
+#if ! __has_feature(objc_arc)
+#error This file must be compiled with ARC. Either turn on ARC for the project or use -fobjc-arc flag
+#endif
+
+static CFStringRef kRegistrationFileName = CFSTR("com.apple.security.keychainsyncingoveridsproxy.unhandledMessages.plist");
+
+@implementation KeychainSyncingOverIDSProxyPersistentState
+
++ (BOOL)write:(NSURL *)path data:(id)plist error:(NSError **)error
+{
+    if (![NSPropertyListSerialization propertyList: plist isValidForFormat: NSPropertyListXMLFormat_v1_0])
+    {
+        secerror("can't save PersistentState as XML");
+        return false;
+    }
+    
+    NSData *data = [NSPropertyListSerialization dataWithPropertyList: plist
+                                                              format: NSPropertyListXMLFormat_v1_0 options: 0 error: error];
+    if (data == nil)
+    {
+        secerror("error serializing PersistentState to xml: %@", *error);
+        return false;
+    }
+    
+    BOOL writeStatus = [data writeToURL: path options: NSDataWritingAtomic error: error];
+    if (!writeStatus)
+        secerror("error writing PersistentState to file: %@", *error);
+    
+    return writeStatus;
+}
+
++ (id)read: (NSURL *)path error:(NSError **)error
+{
+    NSData *data = [NSData dataWithContentsOfURL: path options: 0 error: error];
+    if (data == nil)
+    {
+        secdebug("unhandledmessages", "error reading PersistentState from %@: %@", path, *error);
+        return nil;
+    }
+    
+    // Now the deserializing:
+    
+    NSPropertyListFormat format;
+    id plist = [NSPropertyListSerialization propertyListWithData: data
+                                                         options: NSPropertyListMutableContainersAndLeaves format: &format error: error];
+    
+    if (plist == nil)
+        secerror("could not deserialize PersistentState from %@: %@", path, *error);
+    
+    return plist;
+}
+
++ (NSURL *)registrationFileURL
+{
+    return (NSURL *)CFBridgingRelease(SecCopyURLForFileInPreferencesDirectory(kRegistrationFileName));
+}
+
++ (NSString *)dictionaryDescription: (NSDictionary *)state
+{
+    NSMutableArray *elements = [NSMutableArray array];
+    [state enumerateKeysAndObjectsUsingBlock: ^(NSString *key, id obj, BOOL *stop) {
+        [elements addObject: [key stringByAppendingString: @":"]];
+        if ([obj isKindOfClass:[NSArray class]]) {
+            [elements addObject: [(NSArray *)obj componentsJoinedByString: @" "]];
+        } else {
+            [elements addObject: [NSString stringWithFormat:@"%@", obj]];
+        }
+    }];
+    return [elements componentsJoinedByString: @" "];
+}
+
++ (NSMutableDictionary *)idsState
+{
+    NSError *error = NULL;
+    id stateDictionary = [KeychainSyncingOverIDSProxyPersistentState read:[[self class] registrationFileURL] error:&error];
+    secdebug("keyregister", "Read registeredKeys: <%@>", [self dictionaryDescription: stateDictionary]);
+    // Ignore older states with an NSArray
+    if (![stateDictionary isKindOfClass:[NSDictionary class]])
+        return NULL;
+    return [NSMutableDictionary dictionaryWithDictionary:stateDictionary];
+}
+
++ (void)setUnhandledMessages: (NSDictionary *)unhandledMessages
+{
+    NSError *error = NULL;
+    secdebug("IDS unhandled message", "Write unhandled Messages and monitor state: <%@>", [self dictionaryDescription: unhandledMessages]);
+    [KeychainSyncingOverIDSProxyPersistentState write:[[self class] registrationFileURL] data:unhandledMessages error:&error];
+}
+
+@end