+++ /dev/null
-/*
- * Copyright (c) 2012-2014 Apple Inc. All Rights Reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
-
-
-/*
- * SOSEngine.c - Implementation of a secure object syncing engine
- */
-
-#include <SecureObjectSync/SOSEngine.h>
-#include <SecureObjectSync/SOSDigestVector.h>
-#include <SecureObjectSync/SOSInternal.h>
-#include <SecureObjectSync/SOSPeerInfo.h>
-#include <corecrypto/ccder.h>
-#include <stdlib.h>
-#include <stdbool.h>
-#include <utilities/SecCFError.h>
-#include <utilities/SecCFRelease.h>
-#include <utilities/SecCFWrappers.h>
-#include <utilities/der_plist.h>
-#include <utilities/der_plist_internal.h>
-#include <utilities/debugging.h>
-#include <utilities/iCloudKeychainTrace.h>
-#include <AssertMacros.h>
-#include <CoreFoundation/CoreFoundation.h>
-#include <securityd/SecItemDataSource.h> // TODO: We can't leave this here.
-#include <securityd/SecDbItem.h> // TODO: We can't leave this here.
-#include <securityd/SecItemServer.h>// TODO: We can't leave this here.
-#include <Security/SecItemPriv.h>// TODO: We can't leave this here.
-#include <securityd/SOSCloudCircleServer.h>
-
-//
-// MARK: SOSEngine The Keychain database with syncable keychain support.
-//
-
-// Key in dataSource for general engine state file.
-// This file only has digest entries in it, no manifests.
-static const CFStringRef kSOSEngineState = CFSTR("engine-state");
-
-// Keys in state dictionary
-static CFStringRef kSOSPeerCoderKey = CFSTR("coder");
-static CFStringRef kSOSEngineManifestCacheKey = CFSTR("manifestCache");
-static CFStringRef kSOSEnginePeerStateKey = CFSTR("peerState");
-static CFStringRef kSOSEnginePeerIDsKey = CFSTR("peerIDs");
-static CFStringRef kSOSEngineIDKey = CFSTR("id");
-
-/* SOSEngine implementation. */
-struct __OpaqueSOSEngine {
- CFRuntimeBase _base;
- SOSDataSourceRef dataSource;
- CFStringRef myID; // My peerID in the circle
- SOSManifestRef manifest; // Explicitly not in cache since it's not persisted?
- // We need to address the issues of corrupt keychain items
- SOSManifestRef unreadble; // Possibly by having a set of unreadble items, to which we
- // add any corrupted items in the db that have yet to be deleted.
- // This happens if we notce corruption during a (read only) query.
- // We would also perma-subtract unreadable from manifest whenever
- // anyone asked for manifest. This result would be cached in
- // The manifestCache below, so we just need a key into the cache
- CFDataRef localMinusUnreadableDigest; // or a digest (CFDataRef of the right size).
-
- CFMutableDictionaryRef manifestCache; // digest -> ( refcount, manifest )
- CFMutableDictionaryRef peerState; // peerId -> mutable array of digests
- CFArrayRef peerIDs;
-
- dispatch_queue_t queue;
-};
-
-static bool SOSEngineLoad(SOSEngineRef engine, CFErrorRef *error);
-
-
-static CFStringRef SOSPeerIDArrayCreateString(CFArrayRef peerIDs) {
- return peerIDs ? CFStringCreateByCombiningStrings(kCFAllocatorDefault, peerIDs, CFSTR(" ")) : CFSTR("");
- }
-
-static CFStringRef SOSEngineCopyFormattingDesc(CFTypeRef cf, CFDictionaryRef formatOptions) {
- SOSEngineRef engine = (SOSEngineRef)cf;
- CFStringRef tpDesc = SOSPeerIDArrayCreateString(engine->peerIDs);
- CFStringRef desc = CFStringCreateWithFormat(kCFAllocatorDefault, formatOptions, CFSTR("<Engine %@ peers %@ MC[%d] PS[%d]>"), engine->myID, tpDesc, engine->manifestCache ? (int)CFDictionaryGetCount(engine->manifestCache) : 0, engine->peerState ? (int)CFDictionaryGetCount(engine->peerState) : 0);
- CFReleaseSafe(tpDesc);
- return desc;
- }
-
-static CFStringRef SOSEngineCopyDebugDesc(CFTypeRef cf) {
- return SOSEngineCopyFormattingDesc(cf, NULL);
- }
-
-static dispatch_queue_t sEngineQueue;
-static CFDictionaryRef sEngineMap;
-
-CFGiblisWithFunctions(SOSEngine, NULL, NULL, NULL, NULL, NULL, SOSEngineCopyFormattingDesc, SOSEngineCopyDebugDesc, NULL, NULL, ^{
- sEngineQueue = dispatch_queue_create("SOSEngine queue", DISPATCH_QUEUE_SERIAL);
- sEngineMap = CFDictionaryCreateMutableForCFTypes(kCFAllocatorDefault);
-});
-
-#define _LOG_RAW_MESSAGES 0
-void logRawMessage(CFDataRef message, bool sending, uint64_t seqno)
-{
-#if _LOG_RAW_MESSAGES
- CFStringRef hexMessage = NULL;
- if (message) {
- hexMessage = CFDataCopyHexString(message);
- if (sending)
- secnoticeq("engine", "%s RAW%1d %@", sending ? "send" : "recv", seqno?2:0, hexMessage);
- else
- secnoticeq("engine", "%s RAWx %@", sending ? "send" : "recv", hexMessage); // we don't know vers of received msg here
- }
- CFReleaseSafe(hexMessage);
-#endif
-}
-//
-// Peer state layout. WRONG! It's an array now
-// The peer state is an array.
-// The first element of the array is a dictionary with any number of keys and
-// values in it (for future expansion) such as changing the digest size or type
-// or remebering boolean flags for a peers sake.
-// The next three are special in that they are manifest digests with special
-// meaning and rules as to how they are treated (These are dynamically updated
-// based on database activity so they have a fully history of all changes made
-// to the local db. The first is the manifest representing the pendingObjects
-// to send to the other peer. This is normally only ever appending to, and in
-// particular with transactions originating from the Keychain API that affect
-// syncable items will need to add the new objects digests to the pendingObjects list
-// while adding the digests of any tombstones encountered to the extra list.
-
-CFStringRef SOSEngineGetMyID(SOSEngineRef engine) {
- // TODO: this should not be needed
- return engine->myID;
-}
-
-// TEMPORARY: Get the list of IDs for cleanup, this shouldn't be used instead it should iterate KVS.
-CFArrayRef SOSEngineGetPeerIDs(SOSEngineRef engine) {
- return engine->peerIDs;
-}
-
-SOSManifestRef SOSEngineGetManifestForDigest(SOSEngineRef engine, CFDataRef digest) {
- if (!engine->manifestCache || !digest) return NULL;
- SOSManifestRef manifest = (SOSManifestRef)CFDictionaryGetValue(engine->manifestCache, digest);
- if (!manifest) return NULL;
- if (CFGetTypeID(manifest) != SOSManifestGetTypeID()) {
- secerror("dropping corrupt manifest for %@ from cache", digest);
- CFDictionaryRemoveValue(engine->manifestCache, digest);
- return NULL;
- }
-
- return manifest;
-}
-
-void SOSEngineAddManifest(SOSEngineRef engine, SOSManifestRef manifest) {
- CFDataRef digest = SOSManifestGetDigest(manifest, NULL);
- if (digest) {
- if (!engine->manifestCache)
- engine->manifestCache = CFDictionaryCreateMutableForCFTypes(kCFAllocatorDefault);
- CFDictionaryAddValue(engine->manifestCache, digest, manifest);
- }
-}
-
-CFDataRef SOSEnginePatchRecordAndCopyDigest(SOSEngineRef engine, SOSManifestRef base, SOSManifestRef removals, SOSManifestRef additions, CFErrorRef *error) {
- CFDataRef digest = NULL;
- SOSManifestRef manifest = SOSManifestCreateWithPatch(base, removals, additions, error);
- if (manifest) {
- SOSEngineAddManifest(engine, manifest);
- digest = CFRetainSafe(SOSManifestGetDigest(manifest, NULL));
- }
- CFReleaseSafe(manifest);
- return digest;
-}
-
-static bool SOSEngineHandleManifestUpdates(SOSEngineRef engine, SOSDataSourceTransactionSource source, SOSManifestRef removals, SOSManifestRef additions, CFErrorRef *error) {
- __block struct SOSDigestVector mdInCache = SOSDigestVectorInit;
- struct SOSDigestVector mdInUse = SOSDigestVectorInit;
- struct SOSDigestVector mdUnused = SOSDigestVectorInit;
- struct SOSDigestVector mdMissing = SOSDigestVectorInit;
- CFStringRef peerID = NULL;
- bool ok = true;
-
- require_quiet(engine->peerState, exit); // Not a failure no work to do
-
- if(engine->peerIDs){
- CFArrayForEachC(engine->peerIDs, peerID) {
- SOSPeerRef peer = SOSPeerCreateWithEngine(engine, peerID);
- if (removals || additions)
- ok &= SOSPeerDataSourceWillCommit(peer, source, removals, additions, error);
- SOSPeerMarkDigestsInUse(peer, &mdInUse);
- CFReleaseSafe(peer);
- }
- }
- if(engine->manifestCache){
- CFDictionaryForEach(engine->manifestCache, ^(const void *key, const void *value) {
- CFDataRef digest = (CFDataRef)key;
- if (isData(digest))
- SOSDigestVectorAppend(&mdInCache, CFDataGetBytePtr(digest));
- });
-
- // Delete unused manifests.
- SOSDigestVectorDiff(&mdInCache, &mdInUse, &mdUnused, &mdMissing);
- SOSManifestRef unused = SOSManifestCreateWithDigestVector(&mdUnused, NULL);
- SOSManifestForEach(unused, ^(CFDataRef digest, bool *stop) {
- if (digest)
- CFDictionaryRemoveValue(engine->manifestCache, digest);
- });
- CFReleaseSafe(unused);
- }
- // Delete unused peerState
- if (engine->peerState && engine->peerIDs) {
- CFMutableDictionaryRef newPeerState = CFDictionaryCreateMutableForCFTypes(kCFAllocatorDefault);
- CFArrayForEachC(engine->peerIDs, peerID) {
- CFTypeRef value = CFDictionaryGetValue(engine->peerState, peerID);
- if (value)
- CFDictionarySetValue(newPeerState, peerID, value);
- }
- CFDictionaryForEach(engine->peerState, ^(const void *key, const void *value) {
- if(isDictionary(value) && !CFDictionaryContainsKey(newPeerState, key)){
- CFMutableDictionaryRef untrustedStuff = (CFMutableDictionaryRef)value;
- CFDataRef untrustedCoder = (CFDataRef)CFDictionaryGetValue(untrustedStuff, kSOSPeerCoderKey);
- if(untrustedCoder){
- CFMutableDictionaryRef untrustedDict = CFDictionaryCreateMutableForCFTypesWith(kCFAllocatorDefault, kSOSPeerCoderKey, untrustedCoder, NULL);
- CFDictionarySetValue(newPeerState, key, untrustedDict);
- CFReleaseNull(untrustedDict);
- }
- }
- });
- CFReleaseSafe(engine->peerState);
- engine->peerState = newPeerState;
- }
-
-exit:
- SOSDigestVectorFree(&mdInCache);
- SOSDigestVectorFree(&mdInUse);
- SOSDigestVectorFree(&mdUnused);
- SOSDigestVectorFree(&mdMissing);
- return ok;
-}
-
-static CFDataRef SOSEngineCopyState(SOSEngineRef engine, CFErrorRef *error) {
- CFDataRef der = NULL;
- CFMutableDictionaryRef state = CFDictionaryCreateMutableForCFTypes(kCFAllocatorDefault);
- if (engine->myID) CFDictionarySetValue(state, kSOSEngineIDKey, engine->myID);
- if (engine->peerIDs) CFDictionarySetValue(state, kSOSEnginePeerIDsKey, engine->peerIDs);
- if (engine->peerState) CFDictionarySetValue(state, kSOSEnginePeerStateKey, engine->peerState);
- if (engine->manifestCache) {
- CFMutableDictionaryRef mfc = CFDictionaryCreateMutableForCFTypes(kCFAllocatorDefault);
- CFDictionarySetValue(state, kSOSEngineManifestCacheKey, mfc);
- CFDictionaryForEach(engine->manifestCache, ^(const void *key, const void *value) {
- SOSManifestRef mf = (SOSManifestRef)value;
- if (mf && (CFGetTypeID(mf) == SOSManifestGetTypeID()))
- CFDictionarySetValue(mfc, key, SOSManifestGetData(mf));
- });
- CFReleaseSafe(mfc);
- }
- der = kc_plist_copy_der(state, error);
- CFReleaseSafe(state);
- secnotice("engine", "%@", engine);
- return der;
-}
-
-static bool SOSEngineSave(SOSEngineRef engine, SOSTransactionRef txn, CFErrorRef *error) {
- CFDataRef derState = SOSEngineCopyState(engine, error);
- bool ok = derState && SOSDataSourceSetStateWithKey(engine->dataSource, txn, kSOSEngineState, kSecAttrAccessibleAlways, derState, error);
- CFReleaseSafe(derState);
- return ok;
-}
-
-static bool SOSEngineUpdateLocalManifest_locked(SOSEngineRef engine, SOSDataSourceTransactionSource source, SOSManifestRef removals, SOSManifestRef additions, CFErrorRef *error) {
- bool ok = true;
- if (engine->manifest) {
- SOSManifestRef updatedManifest = SOSManifestCreateWithPatch(engine->manifest, removals, additions, error);
- if (updatedManifest)
- CFAssignRetained(engine->manifest, updatedManifest);
-
- // Update Peer Manifests. -- Shouldn't this be deferred until we apply our toAdd and toDel to the local manifest?
- ok &= SOSEngineHandleManifestUpdates(engine, source, removals, additions, error);
- }
- return ok;
-}
-
-static bool SOSEngineUpdateChanges(SOSEngineRef engine, SOSTransactionRef txn, SOSDataSourceTransactionPhase phase, SOSDataSourceTransactionSource source, SOSManifestRef removals, SOSManifestRef additions, CFErrorRef *error)
-{
- secnotice("engine", "%s %s dels:%@ adds:%@", phase == kSOSDataSourceTransactionWillCommit ? "will-commit" : phase == kSOSDataSourceTransactionDidCommit ? "did-commit" : "did-rollback", source == kSOSDataSourceSOSTransaction ? "sos" : "api", removals, additions);
- bool ok = true;
- switch (phase) {
- case kSOSDataSourceTransactionDidRollback:
- ok &= SOSEngineLoad(engine, error);
- break;
- case kSOSDataSourceTransactionWillCommit: {
- ok &= SOSEngineUpdateLocalManifest_locked(engine, source, removals, additions, error);
- // Write SOSEngine and SOSPeer state to disk if dirty
- ok &= SOSEngineSave(engine, txn, error);
- break;
- }
- case kSOSDataSourceTransactionDidCommit:
- break;
- }
- return ok;
-}
-
-static void SOSEngineSetTrustedPeers(SOSEngineRef engine, CFStringRef myPeerID, CFArrayRef trustedPeers) {
- const bool wasInCircle = engine->myID;
- const bool isInCircle = myPeerID;
- const bool inCircleChanged = wasInCircle != isInCircle;
-
- CFStringRef peerID = NULL;
- CFRetainAssign(engine->myID, myPeerID);
-
- if(trustedPeers != NULL && CFArrayGetCount(trustedPeers) != 0){
- CFReleaseNull(engine->peerIDs);
- engine->peerIDs = CFArrayCreateMutableForCFTypes(kCFAllocatorDefault);
- CFArrayForEachC(trustedPeers, peerID){
- CFArrayAppendValue((CFMutableArrayRef)engine->peerIDs, peerID);
- };
- }
- else{
- engine->peerIDs = NULL;
- }
- // If we entered a circle of more than 2 or our last peer left we need to do stuff
- if (inCircleChanged) {
- if (isInCircle) {
- CFErrorRef dsError = NULL;
- if (!(engine->manifest = SOSDataSourceCopyManifest(engine->dataSource, &dsError))) {
- secerror("failed to load manifest from datasource: %@", dsError);
- CFReleaseNull(dsError);
- }
- SOSDataSourceSetNotifyPhaseBlock(engine->dataSource, engine->queue, ^(SOSDataSourceRef ds, SOSTransactionRef txn, SOSDataSourceTransactionPhase phase, SOSDataSourceTransactionSource source, struct SOSDigestVector *removals, struct SOSDigestVector *additions) {
- SOSManifestRef mfdel = SOSManifestCreateWithDigestVector(removals, NULL);
- SOSManifestRef mfadd = SOSManifestCreateWithDigestVector(additions, NULL);
- CFErrorRef localError = NULL;
- if (!SOSEngineUpdateChanges(engine, txn, phase, source, mfdel, mfadd, &localError)) {
- secerror("updateChanged failed: %@", localError);
- }
- CFReleaseSafe(localError);
- CFReleaseSafe(mfdel);
- CFReleaseSafe(mfadd);
- });
- } else {
- SOSDataSourceSetNotifyPhaseBlock(engine->dataSource, NULL, NULL);
- CFReleaseNull(engine->manifest);
- }
- }
-}
-
-static bool SOSEngineSetState(SOSEngineRef engine, CFDataRef state, CFErrorRef *error) {
- bool ok = true;
- if (state) {
- CFMutableDictionaryRef dict = NULL;
- const uint8_t *der = CFDataGetBytePtr(state);
- const uint8_t *der_end = der + CFDataGetLength(state);
- der = der_decode_dictionary(kCFAllocatorDefault, kCFPropertyListMutableContainers, (CFDictionaryRef *)&dict, error, der, der_end);
- if (der && der != der_end) {
- ok = SOSErrorCreate(kSOSErrorDecodeFailure, error, NULL, CFSTR("trailing %td bytes at end of state"), der_end - der);
- }
- if (ok) {
- SOSEngineSetTrustedPeers(engine, (CFStringRef)CFDictionaryGetValue(dict, kSOSEngineIDKey),
- (CFArrayRef)CFDictionaryGetValue(dict, kSOSEnginePeerIDsKey));
- CFRetainAssign(engine->peerState, (CFMutableDictionaryRef)CFDictionaryGetValue(dict, kSOSEnginePeerStateKey));
-
- CFReleaseNull(engine->manifestCache);
- CFMutableDictionaryRef mfc = (CFMutableDictionaryRef)CFDictionaryGetValue(dict, kSOSEngineManifestCacheKey);
- if (mfc) {
- engine->manifestCache = CFDictionaryCreateMutableForCFTypes(kCFAllocatorDefault);
- CFDictionaryForEach(mfc, ^(const void *key, const void *value) {
- CFDataRef data = (CFDataRef)value;
- if (isData(data)) {
- SOSManifestRef mf = SOSManifestCreateWithData(data, NULL);
- if (mf)
- CFDictionarySetValue(engine->manifestCache, key, mf);
- CFReleaseSafe(mf);
- }
- });
- }
- }
- CFReleaseNull(dict);
- }
- secnotice("engine", "%@", engine);
- return ok;
-}
-
-static bool SOSEngineLoad(SOSEngineRef engine, CFErrorRef *error) {
- CFDataRef state = SOSDataSourceCopyStateWithKey(engine->dataSource, kSOSEngineState, kSecAttrAccessibleAlways, error);
- bool ok = state && SOSEngineSetState(engine, state, error);
- CFReleaseSafe(state);
- return ok;
-}
-
-static void CFArraySubtract(CFMutableArrayRef from, CFArrayRef remove) {
- if (remove) {
- CFArrayForEach(remove, ^(const void *value) {
- CFArrayRemoveAllValue(from, value);
- });
- }
-}
-
-static CFMutableArrayRef CFArrayCreateDifference(CFAllocatorRef alloc, CFArrayRef set, CFArrayRef remove) {
- CFMutableArrayRef result;
- if (!set) {
- result = CFArrayCreateMutableForCFTypes(kCFAllocatorDefault);
- } else {
- result = CFArrayCreateMutableCopy(alloc, 0, set);
-
- if (remove)
- CFArraySubtract(result, remove);
- }
-
- return result;
-}
-
-void SOSEngineCircleChanged_locked(SOSEngineRef engine, CFStringRef myPeerID, CFArrayRef trustedPeers, CFArrayRef untrustedPeers) {
- CFMutableArrayRef addedPeers = CFArrayCreateDifference(kCFAllocatorDefault, trustedPeers, engine->peerIDs);
- CFMutableArrayRef deletedPeers = CFArrayCreateDifference(kCFAllocatorDefault, engine->peerIDs, trustedPeers);
-
- CFStringRef tpDesc = SOSPeerIDArrayCreateString(trustedPeers);
- CFStringRef apDesc = SOSPeerIDArrayCreateString(addedPeers);
- CFStringRef dpDesc = SOSPeerIDArrayCreateString(deletedPeers);
- secnotice("engine", "trusted %@ added %@ removed %@", tpDesc, apDesc, dpDesc);
- CFReleaseSafe(dpDesc);
- CFReleaseSafe(apDesc);
- CFReleaseSafe(tpDesc);
-
- SOSEngineSetTrustedPeers(engine, myPeerID, trustedPeers);
-
- // Remove any cached state for peers we no longer use but keep coders alive
- if (deletedPeers && CFArrayGetCount(deletedPeers) && engine->peerState) {
- CFStringRef peerID = NULL;
- CFArrayForEachC(deletedPeers, peerID) {
- CFMutableDictionaryRef peer_data = (CFMutableDictionaryRef) CFDictionaryGetValue(engine->peerState, peerID);
- CFDataRef coder_data = isDictionary(peer_data) ? (CFDataRef) CFDictionaryGetValue(peer_data, kSOSPeerCoderKey) : NULL;
-
- if(isData(coder_data) &&
- untrustedPeers && CFArrayContainsValue(untrustedPeers, CFRangeMake(0, CFArrayGetCount(untrustedPeers)), peerID)) {
- CFRetainSafe(coder_data);
- CFDictionaryRemoveAllValues(peer_data);
- CFDictionaryAddValue(peer_data, kSOSPeerCoderKey, coder_data);
- CFReleaseSafe(coder_data);
- } else {
- CFDictionaryRemoveValue(engine->peerState, peerID);
- }
- }
- // Run though all peers and only cache manifests for peers we still have
- // TODO: Factor out gc from SOSEngineHandleManifestUpdates and just call that
- SOSEngineHandleManifestUpdates(engine, kSOSDataSourceSOSTransaction, NULL, NULL, NULL);
- }
-
- CFReleaseNull(addedPeers);
- CFReleaseNull(deletedPeers);
-
-}
-
-#if 0
-static SOSManifestRef SOSEngineCopyCleanManifest(SOSEngineRef engine, CFErrorRef *error) {
- SOSManifestRef localMinusUnreadable;
- }
-#endif
-
-// Initialize the engine if a load fails. Basically this is our first time setup
-static bool SOSEngineInit(SOSEngineRef engine, CFErrorRef *error) {
- bool ok = true;
- secnotice("engine", "new engine for datasource named %@", SOSDataSourceGetName(engine->dataSource));
- return ok;
-}
-
-// Called by our DataSource in its constructor
-SOSEngineRef SOSEngineCreate(SOSDataSourceRef dataSource, CFErrorRef *error) {
- SOSEngineRef engine = NULL;
- engine = CFTypeAllocate(SOSEngine, struct __OpaqueSOSEngine, kCFAllocatorDefault);
- engine->dataSource = dataSource;
- engine->queue = dispatch_queue_create("engine", DISPATCH_QUEUE_SERIAL);
- CFErrorRef engineError = NULL;
- if (!SOSEngineLoad(engine, &engineError)) {
- secwarning("engine failed load state starting with nothing %@", engineError);
- CFReleaseNull(engineError);
- if (!SOSEngineInit(engine, error)) {
- secerror("engine failed to initialze %@ giving up", engineError);
- }
- }
- return engine;
-}
-
-
-//
-// MARK: SOSEngine API
-//
-
-void SOSEngineDispose(SOSEngineRef engine) {
- // NOOP Engines stick around forever to monitor dataSource changes.
-}
-
-static SOSManifestRef SOSEngineCopyManifest_locked(SOSEngineRef engine, CFErrorRef *error) {
- return CFRetainSafe(engine->manifest);
-}
-
-/* Handle incoming message from peer p. Return false if there was an error, true otherwise. */
-static bool SOSEngineHandleMessage_locked(SOSEngineRef engine, CFStringRef peerID, SOSMessageRef message,
- SOSTransactionRef txn, bool *commit, bool *somethingChanged, CFErrorRef *error) {
- SOSPeerRef peer = SOSPeerCreateWithEngine(engine, peerID);
- CFStringRef peerDesc = NULL;
- SOSManifestRef localManifest = NULL;
- SOSManifestRef allAdditions = NULL;
- SOSManifestRef confirmed = NULL;
- SOSManifestRef base = NULL;
- SOSManifestRef confirmedRemovals = NULL, confirmedAdditions = NULL;
- __block struct SOSDigestVector receivedObjects = SOSDigestVectorInit;
-
- // Check for unknown criticial extensions in the message, and handle
- // any other extensions we support
- __block bool ok = true;
- __block struct SOSDigestVector dvadd = SOSDigestVectorInit;
-
- require_action_quiet(peer, exit, ok = SOSErrorCreate(errSecParam, error, NULL, CFSTR("Couldn't create peer with Engine for %@"), peerID));
- peerDesc = CFCopyDescription(peer);
-
- SOSMessageWithExtensions(message, true, ^(CFDataRef oid, bool isCritical, CFDataRef extension, bool *stop) {
- // OMFG a Critical extension what shall I do!
- ok = SOSErrorCreate(kSOSErrorNotReady, error, NULL, CFSTR("Unknown criticial extension in peer message"));
- *stop = true;
- });
- require_quiet(ok, exit);
-
- // Merge Objects from the message into our DataSource.
- // Should we move the transaction to the SOSAccount level?
- require_quiet(ok &= SOSMessageWithSOSObjects(message, engine->dataSource, error, ^(SOSObjectRef peersObject, bool *stop) {
- CFDataRef digest = SOSObjectCopyDigest(engine->dataSource, peersObject, error);
- if (!digest) {
- *stop = true;
- *commit = false;
- secerror("%@ peer sent bad object: %@, rolling back changes", SOSPeerGetID(peer), error ? *error : NULL);
- return;
- }
- SOSDigestVectorAppend(&receivedObjects, CFDataGetBytePtr(digest));
- SOSMergeResult mr = SOSDataSourceMergeObject(engine->dataSource, txn, peersObject, NULL, error);
- // TODO: If the mr is kSOSMergeLocalObject most of the time (or all of the time),
- // consider asking the peer to stop sending us objects, and send it objects instead.
- ok &= (mr != kSOSMergeFailure);
- if (!ok) {
- *stop = true;
- *commit = false;
- // TODO: Might want to change to warning since the race of us locking after ckd sends us a message could cause db locked errors here.
- secerror("%@ SOSDataSourceMergeObject failed %@ rolling back changes", SOSPeerGetID(peer), error ? *error : NULL);
- } else if (mr==kSOSMergePeersObject || mr==kSOSMergeCreatedObject) {
- *somethingChanged = true;
- } else {
- // mr == kSOSMergeLocalObject
- // Ensure localObject is in local manifest (possible corruption) by posting an update when we are done.
- SOSDigestVectorAppend(&dvadd, CFDataGetBytePtr(digest));
- }
- CFReleaseSafe(digest);
- }), exit);
- struct SOSDigestVector dvunion = SOSDigestVectorInit;
- SOSDigestVectorSort(&receivedObjects);
- SOSDigestVectorUnionSorted(SOSManifestGetDigestVector(SOSMessageGetAdditions(message)), &receivedObjects, &dvunion);
- allAdditions = SOSManifestCreateWithDigestVector(&dvunion, error);
- SOSDigestVectorFree(&receivedObjects);
- SOSDigestVectorFree(&dvunion);
-
- if (dvadd.count) {
- // Ensure any objects that we received and have localally already are actually in our local manifest
- SOSManifestRef mfadd = SOSManifestCreateWithDigestVector(&dvadd, error);
- SOSDigestVectorFree(&dvadd);
- SOSEngineUpdateLocalManifest_locked(engine, kSOSDataSourceSOSTransaction, NULL, mfadd, error);
- CFReleaseSafe(mfadd);
- }
-
- // ---- Don't use local or peer manifests from above this line, since commiting the SOSDataSourceWith transaction might change them ---
-
- // Take a snapshot of our dataSource's local manifest.
- require_quiet(ok = localManifest = SOSEngineCopyManifest_locked(engine, error), exit);
-
- CFDataRef baseDigest = SOSMessageGetBaseDigest(message);
- CFDataRef proposedDigest = SOSMessageGetProposedDigest(message);
-
-#if 0
- // I believe this is no longer needed now that we have eliminated extra,
- // Since this is handeled below once we get a confirmed manifest from our
- // peer.
-
- // If we just received a L00 reset pendingObjects to localManifest
- if (!baseDigest && !proposedDigest) {
- SOSPeerSetPendingObjects(peer, localManifest);
- secnotice("engine", "SOSPeerSetPendingObjects: %@", localManifest);
- }
-#endif
-
- base = CFRetainSafe(SOSEngineGetManifestForDigest(engine, baseDigest));
- confirmed = CFRetainSafe(SOSEngineGetManifestForDigest(engine, SOSMessageGetSenderDigest(message)));
- if (!confirmed) {
- if (SOSManifestGetCount(SOSMessageGetRemovals(message)) || SOSManifestGetCount(allAdditions)) {
- if (base || !baseDigest) {
- confirmed = SOSManifestCreateWithPatch(base, SOSMessageGetRemovals(message), allAdditions, error);
- }
- if (!confirmed) {
- confirmedRemovals = CFRetainSafe(SOSMessageGetRemovals(message));
- confirmedAdditions = CFRetainSafe(allAdditions);
- }
- } else if (baseDigest) {
- confirmed = CFRetainSafe(base);
- secerror("Protocol error send L00 - figure out later base: %@", base);
- }
- }
- secnotice("engine", "Confirmed: %@ base: %@", confirmed, base);
- if (confirmed)
- ok &= SOSManifestDiff(SOSPeerGetConfirmedManifest(peer), confirmed, &confirmedRemovals, &confirmedAdditions, error);
- if (confirmedRemovals || confirmedAdditions)
- ok &= SOSPeerDidReceiveRemovalsAndAdditions(peer, confirmedRemovals, confirmedAdditions, localManifest, error);
- SOSPeerSetConfirmedManifest(peer, confirmed);
-
- // ---- SendObjects and extra->pendingObjects promotion dance ----
-
- // The first block of code below sets peer.sendObjects to true when we receive a L00 and the second block
- // moves extra to pendingObjects once we receive a confirmed manifest in or after the L00.
- if (!baseDigest && !proposedDigest) {
- SOSPeerSetSendObjects(peer, true);
- }
-
- // TODO: should this not depend on SOSPeerSendObjects?:
- if (confirmed /* && SOSPeerSendObjects(peer)*/) {
- SOSManifestRef allExtra = NULL;
- ok &= SOSManifestDiff(confirmed, localManifest, NULL, &allExtra, error);
- secnotice("engine", "%@ confirmed %@ setting O:%@", SOSPeerGetID(peer), confirmed, allExtra);
- SOSPeerSetPendingObjects(peer, allExtra);
- CFReleaseSafe(allExtra);
- }
-
-exit:
- secnoticeq("engine", "recv %@ %@", SOSPeerGetID(peer), message);
- secnoticeq("peer", "recv %@ -> %@", peerDesc, peer);
-
- CFReleaseNull(base);
- CFReleaseSafe(confirmed);
- CFReleaseSafe(localManifest);
- CFReleaseSafe(peerDesc);
- CFReleaseSafe(allAdditions);
- CFReleaseSafe(confirmedRemovals);
- CFReleaseSafe(confirmedAdditions);
- CFReleaseSafe(peer);
- return ok;
-}
-
-static CFDataRef SOSEngineCopyObjectDER(SOSEngineRef engine, SOSObjectRef object, CFErrorRef *error) {
- CFDataRef der = NULL;
- CFDictionaryRef plist = SOSObjectCopyPropertyList(engine->dataSource, object, error);
- if (plist) {
- der = kc_plist_copy_der(plist, error);
- CFRelease(plist);
- }
- return der;
- }
-
-static CFDataRef SOSEngineCreateMessage_locked(SOSEngineRef engine, SOSPeerRef peer,
- CFErrorRef *error, SOSEnginePeerMessageSentBlock *sent) {
- SOSManifestRef local = SOSEngineCopyManifest_locked(engine, error);
- __block SOSMessageRef message = SOSMessageCreate(kCFAllocatorDefault, SOSPeerGetMessageVersion(peer), error);
- SOSManifestRef confirmed = SOSPeerGetConfirmedManifest(peer);
- SOSManifestRef pendingObjects = SOSPeerGetPendingObjects(peer);
- SOSManifestRef objectsSent = NULL;
- SOSManifestRef proposed = NULL;
- SOSManifestRef allMissing = NULL;
- SOSManifestRef allExtra = NULL;
- SOSManifestRef extra = NULL;
- SOSManifestRef excessPending = NULL;
- SOSManifestRef missing = NULL;
- SOSManifestRef deleted = SOSPeerGetPendingDeletes(peer);
- SOSManifestRef excessDeleted = NULL;
- CFDataRef result = NULL;
- bool ok;
-
- ok = SOSManifestDiff(confirmed, local, &allMissing, &allExtra, error);
- ok = ok && SOSManifestDiff(allExtra, pendingObjects, &extra, &excessPending, error);
- if (SOSManifestGetCount(excessPending)) {
- secerror("%@ ASSERTION FAILURE excess pendingObjects: %@", peer, excessPending);
- // Remove excessPending from pendingObjects since they are either
- // already in confirmed or not in local, either way there is no point
- // keeping them in pendingObjects.
-
- pendingObjects = SOSManifestCreateComplement(excessPending, pendingObjects, error);
- SOSPeerSetPendingObjects(peer, pendingObjects);
- CFReleaseSafe(pendingObjects);
- ok = false;
- }
- ok = ok && SOSManifestDiff(allMissing, deleted, &missing, &excessDeleted, error);
- if (SOSManifestGetCount(excessDeleted)) {
- secerror("%@ ASSERTION FAILURE excess deleted: %@", peer, excessDeleted);
- ok = false;
- }
- (void)ok; // Dead store
- CFReleaseNull(allExtra);
- CFReleaseNull(excessPending);
- CFReleaseNull(allMissing);
- CFReleaseNull(excessDeleted);
-
- // Send state for peer 7T0M+TD+A7HZ0frC5oHZnmdR0G: [LCP][os] P: 0, E: 0, M: 0
- secnoticeq("engine", "Send state for peer %@: [%s%s%s][%s%s] P: %zu, E: %zu, M: %zu", SOSPeerGetID(peer),
- local ? "L":"l",
- confirmed ? "C":"0",
- pendingObjects ? "P":"0",
- SOSPeerSendObjects(peer) ? "O":"o",
- SOSPeerMustSendMessage(peer) ? "S":"s",
- SOSManifestGetCount(pendingObjects),
- SOSManifestGetCount(extra),
- SOSManifestGetCount(missing)
- );
-
- if (confirmed) {
- // TODO: Because of not letting things terminate while we have extra left
- // we might send objects when we didn't need to, but there is always an
- // extra roundtrip required for objects that we assume the other peer
- // should have already.
- // TODO: If there are extra objects left, calling this function is not
- // idempotent we should check if pending is what we are about to send and not send anything in this case.
- if (SOSManifestGetCount(pendingObjects) == 0 && SOSManifestGetCount(extra) == 0)
- SOSPeerSetSendObjects(peer, false);
-
- if (CFEqualSafe(local, SOSPeerGetProposedManifest(peer)) && !SOSPeerMustSendMessage(peer)) {
- bool send = false;
- if (CFEqual(confirmed, local)) {
- secnoticeq("engine", "synced <No MSG> %@", peer);
- } else if (SOSManifestGetCount(pendingObjects) == 0 /* TODO: No entries moved from extra to pendingObjects. */
- && SOSManifestGetCount(missing) == 0) {
- secnoticeq("engine", "waiting <MSG not resent> %@", peer);
- } else {
- send = true;
- }
- if (!send) {
- CFReleaseSafe(local);
- CFReleaseSafe(message);
- CFReleaseNull(extra);
- CFReleaseNull(missing);
- return CFDataCreate(kCFAllocatorDefault, NULL, 0);
- }
- }
-
- if (SOSManifestGetCount(pendingObjects)) {
- // If we have additions and we need to send objects send them.
- __block size_t objectsSize = 0;
- __block struct SOSDigestVector dv = SOSDigestVectorInit;
- __block struct SOSDigestVector dvdel = SOSDigestVectorInit;
- if (!SOSDataSourceForEachObject(engine->dataSource, pendingObjects, error, ^void(CFDataRef key, SOSObjectRef object, bool *stop) {
- CFErrorRef localError = NULL;
- CFDataRef digest = NULL;
- CFDataRef der = NULL;
- if (!object) {
- const uint8_t *d = CFDataGetBytePtr(key);
- secerrorq("%@ object %02X%02X%02X%02X dropping from manifest: not found in datasource",
- SOSPeerGetID(peer), d[0], d[1], d[2], d[3]);
- SOSDigestVectorAppend(&dvdel, CFDataGetBytePtr(key));
- } else if (!(der = SOSEngineCopyObjectDER(engine, object, &localError))
- || !(digest = SOSObjectCopyDigest(engine->dataSource, object, &localError))) {
- if (SecErrorGetOSStatus(localError) == errSecDecode) {
- // Decode error, we need to drop these objects from our manifests
- const uint8_t *d = CFDataGetBytePtr(key);
- secerrorq("%@ object %02X%02X%02X%02X dropping from manifest: %@",
- SOSPeerGetID(peer), d[0], d[1], d[2], d[3], localError);
- SOSDigestVectorAppend(&dvdel, CFDataGetBytePtr(key));
- CFRelease(localError);
- } else {
- // Stop iterating and propagate out all other errors.
- const uint8_t *d = CFDataGetBytePtr(key);
- secwarning("%@ object %02X%02X%02X%02X in SOSDataSourceForEachObject: %@",
- SOSPeerGetID(peer), d[0], d[1], d[2], d[3], localError);
- *stop = true;
- CFErrorPropagate(localError, error);
- CFReleaseNull(message);
- }
- } else {
- if (!CFEqual(key, digest)) {
- const uint8_t *d = CFDataGetBytePtr(key);
- const uint8_t *e = CFDataGetBytePtr(digest);
- secwarning("@ object %02X%02X%02X%02X is really %02X%02X%02X%02X dropping from local manifest", d[0], d[1], d[2], d[3], e[0], e[1], e[2], e[3]);
- SOSDigestVectorAppend(&dvdel, CFDataGetBytePtr(key));
- }
-
- size_t objectLen = (size_t)CFDataGetLength(der);
- if (SOSMessageAppendObject(message, der, &localError)) {
- SOSDigestVectorAppend(&dv, CFDataGetBytePtr(digest));
- } else {
- const uint8_t *d = CFDataGetBytePtr(digest);
- CFStringRef hexder = CFDataCopyHexString(der);
- secerrorq("%@ object %02X%02X%02X%02X der: %@ dropping from manifest: %@",
- SOSPeerGetID(peer), d[0], d[1], d[2], d[3], hexder, localError);
- CFReleaseNull(hexder);
- CFReleaseNull(message);
- // Since we can't send these objects let's assume they are bad too?
- SOSDigestVectorAppend(&dvdel, CFDataGetBytePtr(digest));
- }
- objectsSize += objectLen;
- if (objectsSize > kSOSMessageMaxObjectsSize)
- *stop = true;
- }
- CFReleaseSafe(der);
- CFReleaseSafe(digest);
- })) {
- CFReleaseNull(message);
- }
- if (dv.count)
- objectsSent = SOSManifestCreateWithDigestVector(&dv, error);
- if (dvdel.count) {
- CFErrorRef localError = NULL;
- SOSManifestRef mfdel = SOSManifestCreateWithDigestVector(&dvdel, error);
- SOSDigestVectorFree(&dvdel);
- if (!SOSEngineUpdateLocalManifest_locked(engine, kSOSDataSourceSOSTransaction, mfdel, NULL, &localError))
- secerror("SOSEngineUpdateLocalManifest deleting: %@ failed: %@", mfdel, localError);
- CFReleaseSafe(localError);
- CFReleaseSafe(mfdel);
- CFAssignRetained(local, SOSEngineCopyManifest_locked(engine, error));
- }
- SOSDigestVectorFree(&dv);
- }
- } else {
- // If we have no confirmed manifest, we want all pendedObjects going out as a manifest
- objectsSent = CFRetainSafe(pendingObjects);
- }
-
- if (confirmed || SOSManifestGetCount(missing) || SOSManifestGetCount(extra) || objectsSent) {
- SOSManifestRef allExtra = SOSManifestCreateUnion(extra, objectsSent, error);
- proposed = SOSManifestCreateWithPatch(confirmed, missing, allExtra, error);
- CFReleaseNull(allExtra);
- }
-
- if (!SOSMessageSetManifests(message, local, confirmed, proposed, proposed, confirmed ? objectsSent : NULL, error))
- CFReleaseNull(message);
-
- CFReleaseNull(objectsSent);
-
- if (message) {
- result = SOSMessageCreateData(message, SOSPeerNextSequenceNumber(peer), error);
- }
-
- if (result) {
- // Capture the peer in our block (SOSEnginePeerMessageSentBlock)
- CFRetainSafe(peer);
- *sent = Block_copy(^(bool success) {
- dispatch_async(engine->queue, ^{
- if (success) {
- if (!confirmed && !proposed) {
- SOSPeerSetSendObjects(peer, true);
- secnotice("engine", "SOSPeerSetSendObjects(true) L:%@", local);
- }
- SOSPeerAddLocalManifest(peer, local);
- SOSPeerAddProposedManifest(peer, proposed);
- secnoticeq("engine", "send %@ %@", SOSPeerGetID(peer), message);
- } else {
- secerror("%@ failed to send %@", SOSPeerGetID(peer), message);
- }
- CFReleaseSafe(peer);
- CFReleaseSafe(local);
- CFReleaseSafe(proposed);
- CFReleaseSafe(message);
- });
- });
- } else {
- CFReleaseSafe(local);
- CFReleaseSafe(proposed);
- CFReleaseSafe(message);
- }
- CFReleaseNull(extra);
- CFReleaseNull(missing);
- if (error && *error)
- secerror("%@ error in send: %@", SOSPeerGetID(peer), *error);
-
- return result;
-}
-
-static CFDataRef SOSEngineCreateMessageToSyncToPeer_locked(SOSEngineRef engine, CFStringRef peerID, SOSEnginePeerMessageSentBlock *sentBlock, CFErrorRef *error)
-{
- SOSPeerRef peer = SOSPeerCreateWithEngine(engine, peerID);
- CFDataRef message = SOSEngineCreateMessage_locked(engine, peer, error, sentBlock);
- CFReleaseSafe(peer);
-
- return message;
-}
-
-bool SOSEngineHandleMessage(SOSEngineRef engine, CFStringRef peerID,
- CFDataRef raw_message, CFErrorRef *error)
-{
- __block bool result = false;
- __block bool somethingChanged = false;
- SOSMessageRef message = SOSMessageCreateWithData(kCFAllocatorDefault, raw_message, error);
- result = message && SOSDataSourceWith(engine->dataSource, error, ^(SOSTransactionRef txn, bool *commit) {
- dispatch_sync(engine->queue, ^{
- result = SOSEngineHandleMessage_locked(engine, peerID, message, txn, commit, &somethingChanged, error);
- });
- });
- CFReleaseSafe(message);
- if (somethingChanged)
- SecKeychainChanged(false);
- return result;
-}
-
-// --- Called from off the queue, need to move to on the queue
-
-static void SOSEngineDoOnQueue(SOSEngineRef engine, dispatch_block_t action)
-{
- dispatch_sync(engine->queue, action);
-}
-
-void SOSEngineCircleChanged(SOSEngineRef engine, CFStringRef myPeerID, CFArrayRef trustedPeers, CFArrayRef untrustedPeers) {
- SOSEngineDoOnQueue(engine, ^{
- SOSEngineCircleChanged_locked(engine, myPeerID, trustedPeers, untrustedPeers);
- });
-
- __block CFErrorRef localError = NULL;
- SOSDataSourceWith(engine->dataSource, &localError, ^(SOSTransactionRef txn, bool *commit) {
- SOSEngineDoOnQueue(engine, ^{
- *commit = SOSEngineSave(engine, txn, &localError);
- });
- });
- if (localError)
- secerror("failed to save engine state: %@", localError);
- CFReleaseSafe(localError);
-
-}
-
-SOSManifestRef SOSEngineCopyManifest(SOSEngineRef engine, CFErrorRef *error) {
- __block SOSManifestRef result = NULL;
- SOSEngineDoOnQueue(engine, ^{
- result = SOSEngineCopyManifest_locked(engine, error);
- });
- return result;
-}
-
-bool SOSEngineUpdateLocalManifest(SOSEngineRef engine, SOSDataSourceTransactionSource source, struct SOSDigestVector *removals, struct SOSDigestVector *additions, CFErrorRef *error) {
- __block bool result = true;
- SOSManifestRef mfdel = SOSManifestCreateWithDigestVector(removals, error);
- SOSManifestRef mfadd = SOSManifestCreateWithDigestVector(additions, error);
- SOSEngineDoOnQueue(engine, ^{
- // Safe to run async if needed...
- result = SOSEngineUpdateLocalManifest_locked(engine, source, mfdel, mfadd, error);
- CFReleaseSafe(mfdel);
- CFReleaseSafe(mfadd);
- });
- return result;
-}
-
-static bool SOSEngineSetCoderData_locked(SOSEngineRef engine, CFStringRef peer_id, CFDataRef data, CFErrorRef *error) {
- CFMutableDictionaryRef state = NULL;
- if (data) {
- if (!engine->peerState) {
- engine->peerState = CFDictionaryCreateMutableForCFTypes(kCFAllocatorDefault);
- state = CFDictionaryCreateMutableForCFTypes(kCFAllocatorDefault);
- }
- else{
- state = (CFMutableDictionaryRef)CFDictionaryGetValue(engine->peerState, peer_id);
- if(!state)
- state = CFDictionaryCreateMutableForCFTypes(kCFAllocatorDefault);
- }
- CFDictionarySetValue(state, kSOSPeerCoderKey, data);
- CFDictionarySetValue(engine->peerState, peer_id, state);
-
- }else if (engine->peerState) {
- if(CFDictionaryContainsKey(engine->peerState, peer_id)){
- CFMutableDictionaryRef state = (CFMutableDictionaryRef)CFDictionaryGetValue(engine->peerState, peer_id);
- if(CFDictionaryContainsKey(state, kSOSPeerCoderKey))
- CFDictionaryRemoveValue(state, kSOSPeerCoderKey);
- }
- if (CFDictionaryGetCount(engine->peerState) == 0) {
- CFReleaseNull(engine->peerState);
- }
- }
- return true;
-}
-
-bool SOSEngineSetCoderData(SOSEngineRef engine, CFStringRef peer_id, CFDataRef data, CFErrorRef *error) {
- __block bool result = false;
-
- SOSDataSourceWith(engine->dataSource, error, ^(SOSTransactionRef txn, bool *commit) {
- dispatch_sync(engine->queue, ^{
- result = SOSEngineSetCoderData_locked(engine, peer_id, data, error);
- });
- });
-
- return true;
-}
-
-static CFDataRef SOSEngineGetCoderData_locked(SOSEngineRef engine, CFStringRef peer_id) {
- // TODO: probably remove these secnotices
- CFDataRef result = NULL;
- CFMutableDictionaryRef peerState = NULL;
-
- if (!engine->peerState)
- secdebug("engine", "No engine coderData");
- else
- peerState = (CFMutableDictionaryRef)CFDictionaryGetValue(engine->peerState, peer_id);
- if (!peerState)
- secdebug("engine", "No peerState for peer %@", peer_id);
- else{
- result = CFDictionaryGetValue(peerState, kSOSPeerCoderKey);
- if(!result)
- secdebug("engine", "No coder data for peer %@", peer_id);
- }
- return result;
-}
-
-
-CFDataRef SOSEngineGetCoderData(SOSEngineRef engine, CFStringRef peer_id) {
- __block CFDataRef result = NULL;
- SOSDataSourceWith(engine->dataSource, NULL, ^(SOSTransactionRef txn, bool *commit) {
- dispatch_sync(engine->queue, ^{
- result = SOSEngineGetCoderData_locked(engine, peer_id);
- });
- });
-
- return result;
-}
-
-//
-// Peer state layout. WRONG! It's an array now
-// The peer state is an array.
-// The first element of the array is a dictionary with any number of keys and
-// values in it (for future expansion) such as changing the digest size or type
-// or remebering boolean flags for a peers sake.
-// The next three are special in that they are manifest digests with special
-// meaning and rules as to how they are treated (These are dynamically updated
-// based on database activity so they have a fully history of all changes made
-// to the local db. The first is the manifest representing the pendingObjects
-// to send to the other peer. This is normally only ever appending to, and in
-// particular with transactions originating from the Keychain API that affect
-// syncable items will need to add the new objects digests to the pendingObjects list
-// while adding the digests of any tombstones encountered to the extra list.
-
-CFMutableDictionaryRef SOSEngineGetPeerState(SOSEngineRef engine, CFStringRef peerID) {
- CFMutableDictionaryRef peerState = NULL;
- if (engine->peerState)
- peerState = (CFMutableDictionaryRef)CFDictionaryGetValue(engine->peerState, peerID);
- else
- engine->peerState = CFDictionaryCreateMutableForCFTypes(kCFAllocatorDefault);
- if (!peerState) {
- peerState = CFDictionaryCreateMutableForCFTypes(kCFAllocatorDefault);
- CFDictionaryAddValue(engine->peerState, peerID, peerState);
- CFReleaseSafe(peerState);
- }
- return peerState;
-}
-
-CFDataRef SOSEngineCreateMessageToSyncToPeer(SOSEngineRef engine, CFStringRef peerID, SOSEnginePeerMessageSentBlock *sentBlock, CFErrorRef *error) {
- __block CFDataRef result = NULL;
- SOSEngineDoOnQueue(engine, ^{
- result = SOSEngineCreateMessageToSyncToPeer_locked(engine, peerID, sentBlock, error);
- });
- return result;
-}
-
-bool SOSEnginePeerDidConnect(SOSEngineRef engine, CFStringRef peerID, CFErrorRef *error) {
- __block bool result = true;
- result &= SOSDataSourceWith(engine->dataSource, error, ^(SOSTransactionRef txn, bool *commit) {
- dispatch_sync(engine->queue, ^{
- SOSPeerRef peer = SOSPeerCreateWithEngine(engine, peerID);
- if (!peer) {
- result = SOSErrorCreate(kSOSErrorPeerNotFound, error, NULL, CFSTR("Engine has no peer for %@"), peerID);
- } else {
- SOSPeerDidConnect(peer);
- result = SOSEngineSave(engine, txn, error);
- CFReleaseSafe(peer);
- }
- });
- });
-
- return result;
-}
projects / apple / security.git / blobdiff