OSX/sec/Security/SecBackupKeybagEntry.m

   1 /*
   2  * Copyright (c) 2016 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 #include <AssertMacros.h>
  25
  26 #import <Foundation/Foundation.h>
  27
  28 #include <utilities/SecDb.h>
  29 #include "keychain/securityd/SecDbItem.h"
  30 #include "keychain/securityd/SecItemSchema.h"
  31
  32 #if OCTAGON
  33
  34 #import "SecBackupKeybagEntry.h"
  35
  36 // from CKKSZoneStateEntry.m
  37
  38 @implementation SecBackupKeybagEntry
  39
  40 - (instancetype) initWithPublicKey: (NSData*)publicKey publickeyHash: (NSData*) publickeyHash user: (NSData*) user {
  41     if (self = [super init]) {
  42         _publickey = publicKey;
  43         _publickeyHash = publickeyHash;
  44         _musr = user;
  45     }
  46     return self;
  47 }
  48
  49 - (BOOL)isEqual: (id) object {
  50     if(![object isKindOfClass:[SecBackupKeybagEntry class]]) {
  51         return NO;
  52     }
  53
  54     SecBackupKeybagEntry* obj = (SecBackupKeybagEntry*) object;
  55
  56     return ([self.publickeyHash isEqual: obj.publickeyHash]) ? YES : NO;
  57 }
  58
  59 + (instancetype) state: (NSData*) publickeyHash {
  60     NSError* error = nil;
  61     SecBackupKeybagEntry* ret = [SecBackupKeybagEntry tryFromDatabase:publickeyHash error:&error];
  62
  63     if (error) {
  64         secerror("CKKS: error fetching SecBackupKeybagEntry(%@): %@", publickeyHash, error);
  65     }
  66
  67     if(!ret) {
  68         ret = [[SecBackupKeybagEntry alloc] initWithPublicKey: nil publickeyHash: (NSData*) publickeyHash user: nil];
  69     }
  70     return ret;
  71 }
  72
  73 #pragma mark - Database Operations
  74
  75 + (instancetype) fromDatabase: (NSData*) publickeyHash error: (NSError * __autoreleasing *) error {
  76     return [self fromDatabaseWhere: @{@"publickeyHash": publickeyHash} error: error];
  77 }
  78
  79 + (instancetype) tryFromDatabase: (NSData*) publickeyHash error: (NSError * __autoreleasing *) error {
  80     return [self tryFromDatabaseWhere: @{@"publickeyHash": publickeyHash} error: error];
  81 }
  82
  83 #pragma mark - CKKSSQLDatabaseObject methods
  84
  85 + (NSString*) sqlTable {
  86     return @"backup_keybag";
  87 }
  88
  89 + (NSArray<NSString*>*) sqlColumns {
  90     return @[@"publickey", @"publickeyHash", @"musr"];
  91 }
  92
  93 - (NSDictionary<NSString*,id>*) whereClauseToFindSelf {
  94     return @{@"publickeyHash": self.publickeyHash};
  95 }
  96
  97 // used by saveToDatabaseWithConnection to write to db
  98 - (NSDictionary<NSString*,id>*) sqlValues {
  99     return @{
 100         @"publickey":       [self.publickey base64EncodedStringWithOptions:0],
 101         @"publickeyHash":   [self.publickeyHash base64EncodedStringWithOptions:0],
 102         @"musr":            [self.musr base64EncodedStringWithOptions:0],
 103     };
 104 }
 105
 106 + (instancetype)fromDatabaseRow:(NSDictionary<NSString*, CKKSSQLResult*>*)row {
 107     NSData *publicKey = row[@"publickey"].asBase64DecodedData;
 108     NSData *publickeyHash = row[@"publickeyHash"].asBase64DecodedData;
 109     NSData *musr = row[@"musr"].asBase64DecodedData;
 110     if (publicKey == NULL || publickeyHash == NULL || musr == NULL) {
 111         return nil;
 112     }
 113
 114     return [[SecBackupKeybagEntry alloc] initWithPublicKey:publicKey publickeyHash:publickeyHash user:musr];
 115 }
 116
 117 @end
 118
 119 #endif