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24 #import "keychain/ckks/CKKS.h"
25 #import "keychain/ckks/CKKSKeychainView.h"
26 #import "keychain/ckks/CKKSCurrentKeyPointer.h"
27 #import "keychain/ckks/CKKSKey.h"
28 #import "keychain/ckks/CKKSOutgoingQueueEntry.h"
29 #import "keychain/ckks/CKKSReencryptOutgoingItemsOperation.h"
30 #import "keychain/ckks/CKKSItemEncrypter.h"
31 #import "keychain/ckks/CloudKitCategories.h"
35 // Note: reencryption is not, strictly speaking, a CloudKit operation. However, we preserve this to pass it back to the outgoing queue operation we'll create
36 @interface CKKSReencryptOutgoingItemsOperation ()
37 @property CKOperationGroup* ckoperationGroup;
40 @implementation CKKSReencryptOutgoingItemsOperation
42 - (instancetype)init {
45 - (instancetype)initWithCKKSKeychainView:(CKKSKeychainView*)ckks ckoperationGroup:(CKOperationGroup*)ckoperationGroup {
46 if(self = [super init]) {
48 _ckoperationGroup = ckoperationGroup;
50 [self addNullableDependency:ckks.keyStateReadyDependency];
51 [self addNullableDependency:ckks.holdReencryptOutgoingItemsOperation];
53 // We also depend on the key hierarchy being reasonable
54 [self addNullableDependency:ckks.keyStateReadyDependency];
61 CKKSKeychainView* ckks = self.ckks;
63 ckkserror("ckksreencrypt", ckks, "no CKKS object");
67 [ckks dispatchSync: ^bool{
69 ckksnotice("ckksreencrypt", ckks, "CKKSReencryptOutgoingItemsOperation cancelled, quitting");
73 ckks.lastReencryptOutgoingItemsOperation = self;
76 bool newItems = false;
78 NSArray<CKKSOutgoingQueueEntry*>* oqes = [CKKSOutgoingQueueEntry allInState: SecCKKSStateReencrypt zoneID:ckks.zoneID error:&error];
80 ckkserror("ckksreencrypt", ckks, "Error fetching oqes from database: %@", error);
85 for(CKKSOutgoingQueueEntry* oqe in oqes) {
86 // If there's already a 'new' item replacing this one, drop the reencryption on the floor
87 CKKSOutgoingQueueEntry* newOQE = [CKKSOutgoingQueueEntry tryFromDatabase:oqe.uuid state:SecCKKSStateNew zoneID:oqe.item.zoneID error:&error];
89 ckkserror("ckksreencrypt", ckks, "Couldn't load 'new' OQE to determine status: %@", error);
95 ckksnotice("ckksreencrypt", ckks, "Have a new OQE superceding %@ (%@), skipping", oqe, newOQE);
96 // Don't use the state transition here, either, since this item isn't really changing states
97 [oqe deleteFromDatabase:&error];
99 ckkserror("ckksreencrypt", ckks, "Couldn't delete reencrypting OQE(%@) from database: %@", oqe, error);
107 ckksnotice("ckksreencrypt", ckks, "Reencrypting item %@", oqe);
109 NSDictionary* item = [CKKSItemEncrypter decryptItemToDictionary: oqe.item error:&error];
111 if ([error.domain isEqualToString:@"securityd"] && error.code == errSecItemNotFound) {
112 ckkserror("ckksreencrypt", ckks, "Coudn't find key in keychain; attempting to poke key hierarchy: %@", error);
113 [ckks.pokeKeyStateMachineScheduler trigger];
115 ckkserror("ckksreencrypt", ckks, "Couldn't decrypt item %@: %@", oqe, error);
122 // Pick a key whose class matches the keyclass that this item
123 CKKSKey* originalKey = [CKKSKey fromDatabase: oqe.item.parentKeyUUID zoneID:ckks.zoneID error:&error];
125 ckkserror("ckksreencrypt", ckks, "Couldn't fetch key (%@) for item %@: %@", oqe.item.parentKeyUUID, oqe, error);
131 CKKSKey* newkey = [CKKSKey currentKeyForClass: originalKey.keyclass zoneID:ckks.zoneID error:&error];
132 [newkey ensureKeyLoaded: &error];
134 ckkserror("ckksreencrypt", ckks, "Couldn't fetch the current key for class %@: %@", originalKey.keyclass, error);
140 CKKSMirrorEntry* ckme = [CKKSMirrorEntry tryFromDatabase:oqe.item.uuid zoneID:ckks.zoneID error:&error];
142 ckkserror("ckksreencrypt", ckks, "Couldn't fetch ckme (%@) for item %@: %@", oqe.item.parentKeyUUID, oqe, error);
148 CKKSItem* encryptedItem = [CKKSItemEncrypter encryptCKKSItem:oqe.item
150 updatingCKKSItem:ckme.item
155 ckkserror("ckksreencrypt", ckks, "Couldn't encrypt under the new key %@: %@", newkey, error);
161 CKKSOutgoingQueueEntry* replacement = [[CKKSOutgoingQueueEntry alloc] initWithCKKSItem:encryptedItem
163 state:SecCKKSStateNew
165 accessGroup:oqe.accessgroup];
167 // Don't use the CKKSKeychainView state change here, since we're doing a wholesale item swap.
168 [oqe deleteFromDatabase:&error];
169 [replacement saveToDatabase:&error];
171 ckkserror("ckksreencrypt", ckks, "Couldn't save newly-encrypted oqe %@: %@", replacement, error);
181 [ckks processOutgoingQueue:self.ckoperationGroup];