keychain/ot/OTEpochOperation.m

   1 /*
   2  * Copyright (c) 2018 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 #if OCTAGON
  25
  26 #import <utilities/debugging.h>
  27
  28 #import "keychain/ot/OTEpochOperation.h"
  29 #import "keychain/ot/OTCuttlefishContext.h"
  30
  31 #import "keychain/TrustedPeersHelper/TrustedPeersHelperProtocol.h"
  32 #import "keychain/ot/ObjCImprovements.h"
  33
  34 @interface OTEpochOperation ()
  35 @property NSString* containerName;
  36 @property NSString* contextID;
  37 @property CuttlefishXPCWrapper* cuttlefishXPCWrapper;
  38 @end
  39
  40 @implementation OTEpochOperation
  41 @synthesize intendedState = _intendedState;
  42 @synthesize nextState = _nextState;
  43
  44 - (instancetype)init:(NSString*)containerName
  45            contextID:(NSString*)contextID
  46        intendedState:(OctagonState*)intendedState
  47           errorState:(OctagonState*)errorState
  48 cuttlefishXPCWrapper:(CuttlefishXPCWrapper*)cuttlefishXPCWrapper
  49 {
  50     if((self = [super init])) {
  51         _intendedState = intendedState;
  52         _nextState = errorState;
  53
  54         _containerName = containerName;
  55         _contextID = contextID;
  56         _cuttlefishXPCWrapper = cuttlefishXPCWrapper;
  57     }
  58     return self;
  59 }
  60
  61 - (void)groupStart
  62 {
  63     secnotice("octagon", "retrieving epoch");
  64
  65     NSOperation* finishOp = [[NSOperation alloc] init];
  66     [self dependOnBeforeGroupFinished:finishOp];
  67
  68     WEAKIFY(self);
  69     [self.cuttlefishXPCWrapper fetchEgoEpochWithContainer:self.containerName
  70                                                   context:self.contextID
  71                                                     reply:^(uint64_t epoch, NSError* _Nullable error) {
  72             STRONGIFY(self);
  73             if(error) {
  74                 secerror("octagon: Error getting epoch: %@", error);
  75                 self.error = error;
  76             } else {
  77                 self.epoch = epoch;
  78                 self.nextState = self.intendedState;
  79             }
  80             [self runBeforeGroupFinished:finishOp];
  81         }];
  82 }
  83
  84 @end
  85
  86 #endif // OCTAGON