keychain/SecureObjectSync/SOSTransport.m

   1
   2 #include "keychain/SecureObjectSync/SOSInternal.h"
   3 #include "keychain/SecureObjectSync/SOSKVSKeys.h"
   4 #include "keychain/SecureObjectSync/SOSAccountPriv.h"
   5 #include "keychain/SecureObjectSync/SOSTransport.h"
   6 #include "keychain/SecureObjectSync/SOSTransportKeyParameter.h"
   7 #include "keychain/SecureObjectSync/SOSTransportCircleKVS.h"
   8 #include "keychain/SecureObjectSync/SOSTransportMessageKVS.h"
   9 #include "keychain/SecureObjectSync/SOSTransportMessage.h"
  10 #include "keychain/SecureObjectSync/SOSRing.h"
  11
  12 #include "keychain/SecureObjectSync/CKBridge/SOSCloudKeychainClient.h"
  13 #include <utilities/debugging.h>
  14 #include <utilities/SecCFWrappers.h>
  15 #include <CoreFoundation/CFBase.h>
  16
  17 CFStringRef kKeyParameter = CFSTR("KeyParameter");
  18 CFStringRef kCircle = CFSTR("Circle");
  19 CFStringRef kMessage = CFSTR("Message");
  20 CFStringRef kAlwaysKeys = CFSTR("AlwaysKeys");
  21 CFStringRef kFirstUnlocked = CFSTR("FirstUnlockKeys");
  22 CFStringRef kUnlocked = CFSTR("UnlockedKeys");
  23 extern CFStringRef kSOSAccountDebugScope;
  24
  25 #define DATE_LENGTH 18
  26
  27 CFStringRef SOSInterestListCopyDescription(CFArrayRef interests)
  28 {
  29     CFMutableStringRef description = CFStringCreateMutable(kCFAllocatorDefault, 0);
  30     CFStringAppendFormat(description, NULL, CFSTR("<Interest: "));
  31
  32     if (interests) {
  33         CFArrayForEach(interests, ^(const void* string) {
  34             if (isString(string))
  35
  36                 CFStringAppendFormat(description, NULL, CFSTR(" '%@'"), string);
  37         });
  38     }
  39     CFStringAppend(description, CFSTR(">"));
  40
  41     return description;
  42 }
  43
  44
  45 //
  46 // MARK: Key Interest Processing
  47 //
  48
  49 CFGiblisGetSingleton(CFMutableArrayRef, SOSGetTransportMessages, sTransportMessages,  ^{
  50     *sTransportMessages = CFArrayCreateMutable(kCFAllocatorDefault, 0, NULL);
  51 });
  52
  53 CFGiblisGetSingleton(CFMutableArrayRef, SOSGetTransportKeyParameters, sTransportKeyParameters,  ^{
  54     *sTransportKeyParameters = CFArrayCreateMutable(kCFAllocatorDefault, 0, NULL);
  55 });
  56
  57 CFGiblisGetSingleton(CFMutableArrayRef, SOSGetTransportCircles, sTransportCircles,  ^{
  58     *sTransportCircles = CFArrayCreateMutable(kCFAllocatorDefault, 0, NULL);
  59 });
  60
  61
  62 void SOSRegisterTransportMessage(SOSMessage* additional) {
  63     if(additional != nil)
  64         CFArrayAppendValue(SOSGetTransportMessages(), (__bridge CFTypeRef)(additional));
  65 }
  66
  67 void SOSUnregisterTransportMessage(SOSMessage* removal) {
  68     CFArrayRemoveAllValue(SOSGetTransportMessages(), (__bridge CFTypeRef)(removal));
  69 }
  70
  71 void SOSUnregisterAllTransportMessages() {
  72     CFArrayRemoveAllValues(SOSGetTransportMessages());
  73 }
  74
  75 void SOSRegisterTransportCircle(SOSCircleStorageTransport* additional) {
  76     if(additional != nil)
  77         CFArrayAppendValue(SOSGetTransportCircles(), (__bridge CFTypeRef)(additional));
  78 }
  79
  80 void SOSUnregisterTransportCircle(SOSCircleStorageTransport* removal) {
  81     CFArrayRemoveAllValue(SOSGetTransportCircles(), (__bridge CFTypeRef)removal);
  82 }
  83
  84 void SOSUnregisterAllTransportCircles() {
  85     CFArrayRemoveAllValues(SOSGetTransportCircles());
  86 }
  87
  88 void SOSRegisterTransportKeyParameter(CKKeyParameter* additional) {
  89     if(additional != nil)
  90         CFArrayAppendValue(SOSGetTransportKeyParameters(), (__bridge CFTypeRef)(additional));
  91 }
  92
  93 void SOSUnregisterTransportKeyParameter(CKKeyParameter* removal) {
  94     CFArrayRemoveAllValue(SOSGetTransportKeyParameters(), (__bridge CFTypeRef)(removal));
  95 }
  96
  97 void SOSUnregisterAllTransportKeyParameters() {
  98     CFArrayRemoveAllValues(SOSGetTransportKeyParameters());
  99 }
 100
 101 //
 102 // Should we be dispatching back to our queue to handle later
 103 //
 104
 105
 106 void SOSUpdateKeyInterest(SOSAccount* account)
 107 {
 108     CFMutableArrayRef alwaysKeys = CFArrayCreateMutableForCFTypes(kCFAllocatorDefault);
 109     CFMutableArrayRef afterFirstUnlockKeys = CFArrayCreateMutableForCFTypes(kCFAllocatorDefault);
 110     CFMutableArrayRef whenUnlockedKeys = CFArrayCreateMutableForCFTypes(kCFAllocatorDefault);
 111     CFMutableDictionaryRef keyDict = CFDictionaryCreateMutableForCFTypes (kCFAllocatorDefault);
 112
 113     NSMutableArray *temp = (__bridge NSMutableArray *)(SOSGetTransportKeyParameters());
 114
 115     [temp enumerateObjectsUsingBlock:^(CKKeyParameter *value, NSUInteger idx, BOOL * _Nonnull stop) {
 116         CKKeyParameter* tKP = (CKKeyParameter*) value;
 117         if ([tKP SOSTransportKeyParameterGetAccount:tKP] == account && [tKP SOSTransportKeyParameterGetTransportType:tKP err:NULL] == kKVS) {
 118             CKKeyParameter* tkvs = (CKKeyParameter*) value;
 119             CFErrorRef localError = NULL;
 120
 121             if (![tkvs SOSTransportKeyParameterKVSAppendKeyInterests:tkvs ak:alwaysKeys firstUnLock:afterFirstUnlockKeys unlocked:whenUnlockedKeys err:&localError]) {
 122                 secerror("Error getting key parameters interests %@", localError);
 123             }
 124             CFReleaseNull(localError);
 125         }
 126     }];
 127
 128     CFMutableDictionaryRef keyParamsDict = CFDictionaryCreateMutableForCFTypes(kCFAllocatorDefault);
 129     CFDictionarySetValue(keyParamsDict, kAlwaysKeys, alwaysKeys);
 130     CFDictionarySetValue(keyParamsDict, kFirstUnlocked, afterFirstUnlockKeys);
 131     CFDictionarySetValue(keyParamsDict, kUnlocked, whenUnlockedKeys);
 132     CFDictionarySetValue(keyDict, kKeyParameter, keyParamsDict);
 133
 134     CFReleaseNull(alwaysKeys);
 135     CFReleaseNull(afterFirstUnlockKeys);
 136     CFReleaseNull(whenUnlockedKeys);
 137     alwaysKeys = CFArrayCreateMutableForCFTypes(kCFAllocatorDefault);
 138     afterFirstUnlockKeys = CFArrayCreateMutableForCFTypes(kCFAllocatorDefault);
 139     whenUnlockedKeys = CFArrayCreateMutableForCFTypes(kCFAllocatorDefault);
 140
 141     CFArrayForEach(SOSGetTransportCircles(), ^(const void *value) {
 142         SOSKVSCircleStorageTransport *transport = (__bridge SOSKVSCircleStorageTransport*)value;
 143         if ( [[transport getAccount] isEqual: account] ) {
 144             SOSKVSCircleStorageTransport* tkvs = (__bridge SOSKVSCircleStorageTransport*) value;
 145             CFErrorRef localError = NULL;
 146
 147             if(! [tkvs kvsAppendKeyInterest:alwaysKeys firstUnlock:afterFirstUnlockKeys unlocked:whenUnlockedKeys err:&localError]){
 148                 secerror("Error getting circle interests %@", localError);
 149             }
 150             if(![tkvs kvsAppendRingKeyInterest:alwaysKeys firstUnlock:afterFirstUnlockKeys unlocked:whenUnlockedKeys err:&localError]){
 151                 secerror("Error getting ring interests %@", localError);
 152             }
 153             if(![tkvs kvsAppendDebugKeyInterest:alwaysKeys firstUnlock:afterFirstUnlockKeys unlocked:whenUnlockedKeys err:&localError]) {
 154                 secerror("Error getting debug key interests %@", localError);
 155             }
 156
 157             CFReleaseNull(localError);
 158         }
 159
 160     });
 161     CFMutableDictionaryRef circleDict = CFDictionaryCreateMutableForCFTypes(kCFAllocatorDefault);
 162     CFDictionarySetValue(circleDict, kAlwaysKeys, alwaysKeys);
 163     CFDictionarySetValue(circleDict, kFirstUnlocked, afterFirstUnlockKeys);
 164     CFDictionarySetValue(circleDict, kUnlocked, whenUnlockedKeys);
 165     CFDictionarySetValue(keyDict, kCircle, circleDict);
 166
 167     CFReleaseNull(alwaysKeys);
 168     CFReleaseNull(afterFirstUnlockKeys);
 169     CFReleaseNull(whenUnlockedKeys);
 170     alwaysKeys = CFArrayCreateMutableForCFTypes(kCFAllocatorDefault);
 171     afterFirstUnlockKeys = CFArrayCreateMutableForCFTypes(kCFAllocatorDefault);
 172     whenUnlockedKeys = CFArrayCreateMutableForCFTypes(kCFAllocatorDefault);
 173
 174     CFArrayForEach(SOSGetTransportMessages(), ^(const void *value) {
 175         SOSMessage* transport = (__bridge SOSMessage*)value;
 176         if ([transport SOSTransportMessageGetAccount] == account && [transport SOSTransportMessageGetTransportType] == kKVS) {
 177             CFErrorRef localError = NULL;
 178             SOSMessageKVS* tks = (__bridge SOSMessageKVS*)value;
 179             if(![tks SOSTransportMessageKVSAppendKeyInterest:tks ak:alwaysKeys firstUnlock:afterFirstUnlockKeys unlocked:whenUnlockedKeys err:&localError]){
 180                 secerror("Error getting message interests %@", localError);
 181             }
 182             CFReleaseNull(localError);
 183         }
 184     });
 185
 186     CFMutableDictionaryRef messageDict = CFDictionaryCreateMutableForCFTypes(kCFAllocatorDefault);
 187     CFDictionarySetValue(messageDict, kAlwaysKeys, alwaysKeys);
 188     CFDictionarySetValue(messageDict, kFirstUnlocked, afterFirstUnlockKeys);
 189     CFDictionarySetValue(messageDict, kUnlocked, whenUnlockedKeys);
 190     CFDictionarySetValue(keyDict, kMessage, messageDict);
 191
 192     //
 193     // Log what we are about to do.
 194     //
 195     NSUInteger itemCount = 0;
 196     for (NSString *subsystem in @[(__bridge id)kMessage, (__bridge id)kCircle, (__bridge id)kKeyParameter]) {
 197         secnotice("key-interests", "Updating interests: %@", subsystem);
 198         for (NSString *lockState in @[(__bridge id)kAlwaysKeys, (__bridge id)kFirstUnlocked, (__bridge id)kUnlocked]) {
 199             NSArray *items = ((__bridge NSDictionary *)keyDict)[subsystem][lockState];
 200             itemCount += items.count;
 201             for (NSString *item in items) {
 202                 secnotice("key-interests", " key-intrest: %@->%@: %@", subsystem, lockState, item);
 203             }
 204         }
 205     }
 206     secnotice("key-interests", "Updating interests done: %lu", (unsigned long)itemCount);
 207
 208     CFStringRef uuid = SOSAccountCopyUUID(account);
 209     SOSCloudKeychainUpdateKeys(keyDict, uuid, dispatch_get_global_queue(SOS_TRANSPORT_PRIORITY, 0), ^(CFDictionaryRef returnedValues, CFErrorRef error) {
 210         if (error) {
 211             secerror("Error updating keys: %@", error);
 212             account.key_interests_need_updating = true;
 213         } else {
 214             account.key_interests_need_updating = false;
 215         }
 216     });
 217     CFReleaseNull(uuid);
 218
 219     CFReleaseNull(alwaysKeys);
 220     CFReleaseNull(afterFirstUnlockKeys);
 221     CFReleaseNull(whenUnlockedKeys);
 222     CFReleaseNull(keyParamsDict);
 223     CFReleaseNull(circleDict);
 224     CFReleaseNull(messageDict);
 225     CFReleaseNull(keyDict);
 226 }
 227
 228
 229 static void showWhatWasHandled(CFDictionaryRef updates, CFMutableArrayRef handledKeys) {
 230
 231     CFMutableStringRef updateStr = CFStringCreateMutable(kCFAllocatorDefault, 0);
 232     CFMutableStringRef handledKeysStr = CFStringCreateMutable(kCFAllocatorDefault, 0);
 233
 234     CFDictionaryForEach(updates, ^(const void *key, const void *value) {
 235         if (isString(key)) {
 236             CFStringAppendFormat(updateStr, NULL, CFSTR("%@ "), (CFStringRef)key);
 237         }
 238     });
 239     CFArrayForEach(handledKeys, ^(const void *value) {
 240         if (isString(value)) {
 241             CFStringAppendFormat(handledKeysStr, NULL, CFSTR("%@ "), (CFStringRef)value);
 242         }
 243     });
 244     secinfo("updates", "Updates [%ld]: %@", CFDictionaryGetCount(updates), updateStr);
 245     secinfo("updates", "Handled [%ld]: %@", CFArrayGetCount(handledKeys), handledKeysStr);
 246
 247     CFReleaseSafe(updateStr);
 248     CFReleaseSafe(handledKeysStr);
 249 }
 250
 251 #define KVS_STATE_INTERVAL 50
 252
 253 CF_RETURNS_RETAINED
 254 CFMutableArrayRef SOSTransportDispatchMessages(SOSAccountTransaction* txn, CFDictionaryRef updates, CFErrorRef *error){
 255     __block SOSAccount* account = txn.account;
 256
 257     CFMutableArrayRef handledKeys = CFArrayCreateMutableForCFTypes(kCFAllocatorDefault);
 258     CFStringRef dsid = NULL;
 259
 260     if(CFDictionaryGetValueIfPresent(updates, kSOSKVSAccountChangedKey, (const void**)&dsid)){
 261         secnotice("accountChange", "SOSTransportDispatchMessages received kSOSKVSAccountChangedKey");
 262         // While changing accounts we may modify the key params array. To avoid stepping on ourselves we
 263         // copy the list for iteration.  Now modifying the transport outside of the list iteration.
 264         CFMutableArrayRef transportsToUse = CFArrayCreateMutableForCFTypes(kCFAllocatorDefault);
 265
 266         CFArrayForEach(SOSGetTransportKeyParameters(), ^(const void *value) {
 267             CKKeyParameter* transport = (__bridge CKKeyParameter*) value;
 268
 269             if(CFEqualSafe((__bridge CFTypeRef)([transport SOSTransportKeyParameterGetAccount:transport]), (__bridge CFTypeRef)(account))){
 270                 CFArrayAppendValue(transportsToUse, (__bridge const void *)(transport));
 271             }
 272         });
 273
 274         CFArrayForEach(transportsToUse, ^(const void *value) {
 275             CKKeyParameter* tempTransport = (__bridge CKKeyParameter*) value;
 276
 277             CFStringRef accountDSID = (CFStringRef)SOSAccountGetValue(account, kSOSDSIDKey, error);
 278
 279             if(accountDSID == NULL){
 280                 [tempTransport SOSTransportKeyParameterHandleNewAccount:tempTransport acct:account];
 281                 SOSAccountSetValue(account, kSOSDSIDKey, dsid, error);
 282                 secdebug("dsid", "Assigning new DSID: %@", dsid);
 283             } else if(accountDSID != NULL && CFStringCompare(accountDSID, dsid, 0) != 0 ) {
 284                 [tempTransport SOSTransportKeyParameterHandleNewAccount:tempTransport acct:account];
 285                 SOSAccountSetValue(account, kSOSDSIDKey, dsid, error);
 286                 secdebug("dsid", "Assigning new DSID: %@", dsid);
 287             } else {
 288                 secdebug("dsid", "DSIDs are the same!");
 289             }
 290         });
 291
 292         CFReleaseNull(transportsToUse);
 293
 294         CFArrayAppendValue(handledKeys, kSOSKVSAccountChangedKey);
 295     }
 296
 297
 298     // Iterate through keys in updates.  Perform circle change update.
 299     // Then instantiate circles and engines and peers for all peers that
 300     // are receiving a message in updates.
 301     CFMutableDictionaryRef circle_peer_messages_table = CFDictionaryCreateMutableForCFTypes(kCFAllocatorDefault);
 302     CFMutableDictionaryRef circle_circle_messages_table = CFDictionaryCreateMutableForCFTypes(kCFAllocatorDefault);
 303     CFMutableDictionaryRef circle_retirement_messages_table = CFDictionaryCreateMutableForCFTypes(kCFAllocatorDefault);
 304     CFMutableDictionaryRef ring_update_message_table = CFDictionaryCreateMutableForCFTypes(kCFAllocatorDefault);
 305     CFMutableDictionaryRef debug_info_message_table = CFDictionaryCreateMutableForCFTypes(kCFAllocatorDefault);
 306     __block CFMutableDictionaryRef config_message_table = CFDictionaryCreateMutableForCFTypes(kCFAllocatorDefault);
 307
 308     __block CFDataRef newParameters = NULL;
 309     __block bool initial_sync = false;
 310     __block bool new_account = false;
 311
 312     CFDictionaryForEach(updates, ^(const void *key, const void *value) {
 313         CFStringRef circle_name = NULL;
 314         CFStringRef ring_name = NULL;
 315         CFStringRef peer_info_name = NULL;
 316         CFStringRef from_name = NULL;
 317         CFStringRef to_name = NULL;
 318         CFStringRef backup_name = NULL;
 319
 320         require_quiet(isString(key), errOut);
 321         switch (SOSKVSKeyGetKeyTypeAndParse(key, &circle_name, &peer_info_name, &ring_name, &backup_name, &from_name, &to_name)) {
 322             case kCircleKey:
 323                 CFDictionarySetValue(circle_circle_messages_table, circle_name, value);
 324                 break;
 325             case kInitialSyncKey:
 326                 initial_sync = true;
 327                 break;
 328             case kParametersKey:
 329                 if (isData(value)) {
 330                     newParameters = (CFDataRef) CFRetainSafe(value);
 331                 }
 332                 break;
 333             case kMessageKey: {
 334                 CFMutableDictionaryRef circle_messages = CFDictionaryEnsureCFDictionaryAndGetCurrentValue(circle_peer_messages_table, circle_name);
 335                 CFDictionarySetValue(circle_messages, from_name, value);
 336                 break;
 337             }
 338             case kRetirementKey: {
 339                 CFMutableDictionaryRef circle_retirements = CFDictionaryEnsureCFDictionaryAndGetCurrentValue(circle_retirement_messages_table, circle_name);
 340                 CFDictionarySetValue(circle_retirements, from_name, value);
 341                 break;
 342             }
 343             case kAccountChangedKey:
 344                 new_account = true;
 345                 break;
 346             case kRingKey:
 347                 if(isString(ring_name))
 348                     CFDictionarySetValue(ring_update_message_table, ring_name, value);
 349                 break;
 350             case kDebugInfoKey:
 351                 CFDictionarySetValue(debug_info_message_table, peer_info_name, value);
 352                 break;
 353             case kLastCircleKey:
 354             case kLastKeyParameterKey:
 355             case kUnknownKey:
 356                 secnotice("updates", "Unknown key '%@', ignoring", key);
 357                 break;
 358         }
 359
 360     errOut:
 361         CFReleaseNull(circle_name);
 362         CFReleaseNull(from_name);
 363         CFReleaseNull(to_name);
 364         CFReleaseNull(ring_name);
 365         CFReleaseNull(peer_info_name);
 366         CFReleaseNull(backup_name);
 367
 368         if (error && *error)
 369             secerror("Peer message processing error for: %@ -> %@ (%@)", key, value, *error);
 370     });
 371
 372
 373     if (newParameters) {
 374         CFArrayForEach(SOSGetTransportKeyParameters(), ^(const void *value) {
 375             CKKeyParameter* tkvs = (__bridge CKKeyParameter*) value;
 376             CFErrorRef localError = NULL;
 377             if([[tkvs SOSTransportKeyParameterGetAccount:tkvs] isEqual:account]){
 378                 if(![tkvs SOSTransportKeyParameterHandleKeyParameterChanges:tkvs data:newParameters err:localError])
 379                     secerror("Transport failed to handle new key parameters: %@", localError);
 380             }
 381         });
 382         CFArrayAppendValue(handledKeys, kSOSKVSKeyParametersKey);
 383     }
 384     CFReleaseNull(newParameters);
 385
 386     if(initial_sync){
 387         CFArrayAppendValue(handledKeys, kSOSKVSInitialSyncKey);
 388     }
 389
 390     if(CFDictionaryGetCount(debug_info_message_table)) {
 391         /* check for a newly set circle debug scope */
 392         CFTypeRef debugScope = CFDictionaryGetValue(debug_info_message_table, kSOSAccountDebugScope);
 393         if (debugScope) {
 394             if(isString(debugScope)){
 395                 ApplyScopeListForID(debugScope, kScopeIDCircle);
 396             }else if(isDictionary(debugScope)){
 397                 ApplyScopeDictionaryForID(debugScope, kScopeIDCircle);
 398             }
 399         }
 400         CFStringRef debugInfoKey = SOSDebugInfoKeyCreateWithTypeName(kSOSAccountDebugScope);
 401         CFArrayAppendValue(handledKeys, debugInfoKey);
 402         CFReleaseNull(debugInfoKey);
 403     }
 404
 405     if(CFDictionaryGetCount(circle_retirement_messages_table)) {
 406         CFArrayForEach(SOSGetTransportCircles(), ^(const void *value) {
 407             SOSKVSCircleStorageTransport* tkvs = (__bridge SOSKVSCircleStorageTransport*) value;
 408             if([[tkvs getAccount] isEqual:account]){
 409                 CFErrorRef localError = NULL;
 410                 CFDictionaryRef handledRetirementKeys = [tkvs handleRetirementMessages:circle_retirement_messages_table err:error];
 411                 if(handledRetirementKeys == NULL){
 412                     secerror("Transport failed to handle retirement messages: %@", localError);
 413                 } else {
 414                     CFDictionaryForEach(handledRetirementKeys, ^(const void *key, const void *value) {
 415                         CFStringRef circle_name = (CFStringRef)key;
 416                         CFArrayRef handledPeerIDs = (CFArrayRef)value;
 417                         CFArrayForEach(handledPeerIDs, ^(const void *value) {
 418                             CFStringRef peer_id = (CFStringRef)value;
 419                             CFStringRef keyHandled = SOSRetirementKeyCreateWithCircleNameAndPeer(circle_name, peer_id);
 420                             CFArrayAppendValue(handledKeys, keyHandled);
 421                             CFReleaseNull(keyHandled);
 422                         });
 423                     });
 424                 }
 425                 CFReleaseNull(handledRetirementKeys);
 426                 CFReleaseNull(localError);
 427             }
 428         });
 429     }
 430     if(CFDictionaryGetCount(circle_peer_messages_table)) {
 431         CFArrayForEach(SOSGetTransportMessages(), ^(const void *value) {
 432             SOSMessage* tmsg = (__bridge SOSMessage*) value;
 433             CFDictionaryRef circleToPeersHandled = NULL;
 434             CFErrorRef handleMessagesError = NULL;
 435             CFErrorRef flushError = NULL;
 436
 437             if(!([([tmsg SOSTransportMessageGetAccount]) isEqual:account])){
 438                 CFReleaseNull(flushError);
 439                 CFReleaseNull(circleToPeersHandled);
 440                 CFReleaseNull(handleMessagesError);
 441                 return;
 442             }
 443             circleToPeersHandled = [tmsg SOSTransportMessageHandlePeerMessageReturnsHandledCopy:tmsg peerMessages:circle_peer_messages_table err:&handleMessagesError];
 444             if(!circleToPeersHandled){
 445                 secnotice("msg", "No messages handled: %@", handleMessagesError);
 446                 CFReleaseNull(flushError);
 447                 CFReleaseNull(circleToPeersHandled);
 448                 CFReleaseNull(handleMessagesError);
 449                 return;
 450             }
 451             CFArrayRef handledPeers = asArray(CFDictionaryGetValue(circleToPeersHandled, [tmsg SOSTransportMessageGetCircleName]), NULL);
 452
 453             if (handledPeers) {
 454                 CFArrayForEach(handledPeers, ^(const void *value) {
 455                     CFStringRef peerID = asString(value, NULL);
 456                     if (peerID) {
 457                         CFStringRef kvsHandledKey = SOSMessageKeyCreateFromPeerToTransport(tmsg, (__bridge CFStringRef) account.peerID, peerID);
 458                         if (kvsHandledKey) {
 459                             CFArrayAppendValue(handledKeys, kvsHandledKey);
 460                         }
 461                         CFReleaseNull(kvsHandledKey);
 462                     }
 463                 });
 464             }
 465
 466             if(![tmsg SOSTransportMessageFlushChanges:tmsg err:&flushError])
 467                 secnotice("msg", "Flush failed: %@", flushError);
 468
 469             CFReleaseNull(flushError);
 470             CFReleaseNull(circleToPeersHandled);
 471             CFReleaseNull(handleMessagesError);
 472         });
 473     }
 474     if(CFDictionaryGetCount(circle_circle_messages_table)) {
 475         CFArrayForEach(SOSGetTransportCircles(), ^(const void *value) {
 476             SOSKVSCircleStorageTransport* tkvs = (__bridge SOSKVSCircleStorageTransport*) value;
 477             if([[tkvs getAccount] isEqual: account]){
 478                 CFArrayRef handleCircleMessages = [tkvs handleCircleMessagesAndReturnHandledCopy:circle_circle_messages_table err:error];
 479                 CFErrorRef localError = NULL;
 480                 if(handleCircleMessages == NULL){
 481                     secerror("Transport failed to handle circle messages: %@", localError);
 482                 } else if(CFArrayGetCount(handleCircleMessages) == 0) {
 483                     if(CFDictionaryGetCount(circle_circle_messages_table) != 0) {
 484                         secerror("Transport failed to process all circle messages: (%ld/%ld) %@",
 485                                  CFArrayGetCount(handleCircleMessages),
 486                                  CFDictionaryGetCount(circle_circle_messages_table), localError);
 487                     } else {
 488                         secnotice("circle", "Transport handled no circle messages");
 489                     }
 490                 } else {
 491                     CFArrayForEach(handleCircleMessages, ^(const void *value) {
 492                         CFStringRef keyHandled = SOSCircleKeyCreateWithName((CFStringRef)value, error);
 493                         CFArrayAppendValue(handledKeys, keyHandled);
 494                         CFReleaseNull(keyHandled);
 495                     });
 496                 }
 497
 498                 CFReleaseNull(handleCircleMessages);
 499                 CFReleaseNull(localError);
 500             }
 501
 502         });
 503     }
 504     if(CFDictionaryGetCount(ring_update_message_table)){
 505         CFArrayForEach(SOSGetTransportCircles(), ^(const void *value) {
 506             SOSKVSCircleStorageTransport* tkvs = (__bridge SOSKVSCircleStorageTransport*) value;
 507             if([[tkvs getAccount] isEqual:account]){
 508                 CFErrorRef localError = NULL;
 509                 CFMutableArrayRef handledRingMessages = CFArrayCreateMutableForCFTypes(kCFAllocatorDefault);
 510
 511                 CFDictionaryForEach(ring_update_message_table, ^(const void *key, const void *value) {
 512                     CFDataRef ringData = asData(value, NULL);
 513                     SOSRingRef ring = SOSRingCreateFromData(error, ringData);
 514
 515                     if(SOSAccountUpdateRingFromRemote(account, ring, error)){
 516                         CFArrayAppendValue(handledRingMessages, key);
 517                     }
 518                     CFReleaseNull(ring);
 519                 });
 520                 if(CFArrayGetCount(handledRingMessages) == 0){
 521                     secerror("Transport failed to handle ring messages: %@", localError);
 522                 } else {
 523                     CFArrayForEach(handledRingMessages, ^(const void *value) {
 524                         CFStringRef ring_name = (CFStringRef)value;
 525                         CFStringRef keyHandled = SOSRingKeyCreateWithRingName(ring_name);
 526                         CFArrayAppendValue(handledKeys, keyHandled);
 527                         CFReleaseNull(keyHandled);
 528                     });
 529                 }
 530                 CFReleaseNull(handledRingMessages);
 531                 CFReleaseNull(localError);
 532             }
 533         });
 534     }
 535
 536     CFReleaseNull(circle_retirement_messages_table);
 537     CFReleaseNull(circle_circle_messages_table);
 538     CFReleaseNull(circle_peer_messages_table);
 539     CFReleaseNull(debug_info_message_table);
 540     CFReleaseNull(ring_update_message_table);
 541     CFReleaseNull(debug_info_message_table);
 542     CFReleaseNull(config_message_table);
 543     showWhatWasHandled(updates, handledKeys);
 544
 545     return handledKeys;
 546 }
 547