mDNSMacOSX/SettingsBundle/BonjourSCStore.m

   1 /*
   2  *
   3  * Copyright (c) 2016 Apple Inc. All rights reserved.
   4  *
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *     http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  */
  17
  18 #import "BonjourSCStore.h"
  19 #import <Foundation/Foundation.h>
  20 #import <AssertMacros.h>
  21
  22 @implementation BonjourSCStore
  23
  24 + (NSArray * _Nullable)objectForKey:(NSString * _Nonnull)key
  25 {
  26     NSArray *           result = nil;
  27     SCPreferencesRef    store;
  28     OSStatus            err;
  29     NSDictionary *              origDict;
  30
  31     store = SCPreferencesCreateWithAuthorization(kCFAllocatorDefault, SC_DYNDNS_PREFS_KEY, NULL, NULL);
  32     require_action(store != NULL, SysConfigErr, err = SCError());
  33     require_action(true == SCPreferencesLock(store, true), LockFailed, err = SCError());
  34
  35     origDict = (__bridge NSDictionary *)SCPreferencesPathGetValue(store, SC_DYNDNS_SYSTEM_KEY);
  36     if (origDict)  origDict = [NSDictionary dictionaryWithDictionary: origDict];
  37
  38     result = [origDict objectForKey: key];
  39
  40     SCPreferencesUnlock(store);
  41
  42 LockFailed:
  43     CFRelease(store);
  44 SysConfigErr:
  45     return(result);
  46 }
  47
  48 + (void)setObject:(NSArray * _Nullable)value forKey:(NSString * _Nonnull)key
  49 {
  50     SCPreferencesRef        store;
  51     OSStatus                            err;
  52     NSMutableDictionary *   origDict;
  53     Boolean                                     success;
  54
  55     store = SCPreferencesCreateWithAuthorization(kCFAllocatorDefault, SC_DYNDNS_PREFS_KEY, NULL, NULL);
  56     require_action(store != NULL, SysConfigErr, err = SCError());
  57     require_action(true == SCPreferencesLock(store, true), LockFailed, err = SCError());
  58
  59     origDict = (__bridge NSMutableDictionary *)SCPreferencesPathGetValue(store, SC_DYNDNS_SYSTEM_KEY);
  60     if (!origDict)     origDict = [NSMutableDictionary dictionary];
  61     else               origDict = [NSMutableDictionary dictionaryWithDictionary: origDict];
  62
  63     if (value.count)   [origDict setObject: value forKey: key];
  64     else               [origDict removeObjectForKey: key];
  65
  66     success = SCPreferencesPathSetValue(store, SC_DYNDNS_SYSTEM_KEY, (__bridge CFDictionaryRef)origDict);
  67     require_action(success, SCError, err = SCError(););
  68
  69     success = SCPreferencesCommitChanges(store);
  70     require_action(success, SCError, err = SCError());
  71     success = SCPreferencesApplyChanges(store);
  72     require_action(success, SCError, err = SCError());
  73
  74 SCError:
  75     SCPreferencesUnlock(store);
  76 LockFailed:
  77     CFRelease(store);
  78 SysConfigErr:
  79     return;
  80 }
  81
  82
  83 @end
  84