OSX/Keychain Circle Notification/KNPersistentState.m

   1 /*
   2  * Copyright (c) 2013-2014 Apple Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24
  25 #import "KNPersistentState.h"
  26 #import <utilities/debugging.h>
  27
  28 @implementation KNPersistentState
  29
  30 -(NSURL*)urlForStorage
  31 {
  32         return [NSURL URLWithString:@"Preferences/com.apple.security.KCN.plist" relativeToURL:[[NSFileManager defaultManager] URLForDirectory:NSLibraryDirectory inDomain:NSUserDomainMask appropriateForURL:nil create:YES error:nil]];
  33 }
  34
  35 +(instancetype)loadFromStorage
  36 {
  37         KNPersistentState *state = [KNPersistentState new];
  38     if (!state) {
  39         return state;
  40     }
  41
  42     id plist = @{@"lastWritten": [NSDate distantPast]};
  43
  44     NSError *error = nil;
  45     NSData *stateData = [NSData dataWithContentsOfURL:[state urlForStorage] options:0 error:&error];
  46     if (!stateData) {
  47         secdebug("kcn", "Can't read state data (p=%@, err=%@)", [state urlForStorage], error);
  48     } else {
  49         NSPropertyListFormat format;
  50         plist = [NSPropertyListSerialization propertyListWithData:stateData options: NSPropertyListMutableContainersAndLeaves format:&format error:&error];
  51
  52         if (plist == nil) {
  53             secdebug("kcn", "Can't deserialize %@, e=%@", stateData, error);
  54         }
  55     }
  56
  57     state.lastCircleStatus                                              = plist[@"lastCircleStatus"] ? [plist[@"lastCircleStatus"] intValue] : kSOSCCCircleAbsent;
  58     state.lastWritten                                                   = plist[@"lastWritten"];
  59         state.pendingApplicationReminder                        = plist[@"pendingApplicationReminder"] ?: [NSDate distantFuture];
  60         state.applicationDate                                           = plist[@"applicationDate"]            ?: [NSDate distantPast];
  61         state.debugLeftReason                                           = plist[@"debugLeftReason"];
  62         state.pendingApplicationReminderInterval        = plist[@"pendingApplicationReminderInterval"];
  63         state.absentCircleWithNoReason                          = plist[@"absentCircleWithNoReason"] ? [plist[@"absentCircleWithNoReason"] intValue] : NO;
  64
  65     if (!state.pendingApplicationReminderInterval || [state.pendingApplicationReminderInterval doubleValue] <= 0) {
  66         state.pendingApplicationReminderInterval = [NSNumber numberWithUnsignedInt: 24*60*60];
  67     }
  68
  69     return state;
  70 }
  71
  72 -(void)writeToStorage
  73 {
  74     NSMutableDictionary *plist = [@{@"lastCircleStatus"                                  : [NSNumber numberWithInt:self.lastCircleStatus],
  75                                                                         @"lastWritten"                                           : [NSDate date],
  76                                                                         @"applicationDate"                                       : self.applicationDate,
  77                                                                         @"pendingApplicationReminder"            : self.pendingApplicationReminder,
  78                                                                         @"pendingApplicationReminderInterval": self.pendingApplicationReminderInterval,
  79                                                                         @"absentCircleWithNoReason"              : [NSNumber numberWithBool:self.absentCircleWithNoReason],
  80                                                                    } mutableCopy];
  81         if (self.debugLeftReason)
  82                 plist[@"debugLeftReason"] = self.debugLeftReason;
  83     secdebug("kcn", "writeToStorage plist=%@", plist);
  84
  85     NSError *error = nil;
  86     NSData *stateData = [NSPropertyListSerialization dataWithPropertyList:plist format:NSPropertyListXMLFormat_v1_0 options:kCFPropertyListImmutable error:&error];
  87     if (!stateData) {
  88         secdebug("kcn", "Can't serialize %@: %@", plist, error);
  89         return;
  90     }
  91     if (![stateData writeToURL:[self urlForStorage] options:NSDataWritingAtomic error:&error]) {
  92         secdebug("kcn", "Can't write to %@, error=%@", [self urlForStorage], error);
  93     }
  94 }
  95
  96
  97 @end