--- /dev/null
+/*
+ * Copyright (c) 2013-2014 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@
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <AssertMacros.h>
+#include "SOSAccountPriv.h"
+#include "SOSViews.h"
+
+#include <utilities/SecCFWrappers.h>
+#include <utilities/SecCoreCrypto.h>
+#include <Security/SecureObjectSync/SOSKVSKeys.h>
+#include <SOSPeerInfoDER.h>
+
+#include <Security/SecureObjectSync/SOSPeerInfoCollections.h>
+
+
+
+static SOSAccountRef SOSAccountCreateFromRemainingDER_v6(CFAllocatorRef allocator,
+ SOSDataSourceFactoryRef factory,
+ CFErrorRef* error,
+ const uint8_t** der_p, const uint8_t *der_end)
+{
+ SOSAccountRef result = NULL;
+ SOSAccountRef account = NULL;
+ CFArrayRef array = NULL;
+ CFDictionaryRef retiredPeers = NULL;
+ CFStringRef circle_name = factory->copy_name(factory);
+
+ {
+ CFDictionaryRef decoded_gestalt = NULL;
+ *der_p = der_decode_dictionary(kCFAllocatorDefault, kCFPropertyListImmutable, &decoded_gestalt, error,
+ *der_p, der_end);
+
+ if (*der_p == 0)
+ return NULL;
+
+ account = SOSAccountCreateBasic(allocator, decoded_gestalt, factory);
+ CFReleaseNull(decoded_gestalt);
+ }
+
+ *der_p = der_decode_array(kCFAllocatorDefault, 0, &array, error, *der_p, der_end);
+
+ uint64_t tmp_departure_code = kSOSNeverAppliedToCircle;
+ *der_p = ccder_decode_uint64(&tmp_departure_code, *der_p, der_end);
+ *der_p = ccder_decode_bool(&account->user_public_trusted, *der_p, der_end);
+ *der_p = der_decode_public_bytes(kCFAllocatorDefault, kSecECDSAAlgorithmID, &account->user_public, error, *der_p, der_end);
+ *der_p = der_decode_public_bytes(kCFAllocatorDefault, kSecECDSAAlgorithmID, &account->previous_public, error, *der_p, der_end);
+ *der_p = der_decode_data_or_null(kCFAllocatorDefault, &account->user_key_parameters, error, *der_p, der_end);
+
+ *der_p = der_decode_dictionary(kCFAllocatorDefault, kCFPropertyListMutableContainers, (CFDictionaryRef *) &retiredPeers, error, *der_p, der_end);
+ require_action_quiet(*der_p == der_end, fail, *der_p = NULL);
+
+ account->departure_code = (enum DepartureReason) tmp_departure_code;
+
+ CFDictionaryForEach(retiredPeers, ^(const void *key, const void *value) {
+ if (isData(value)) {
+ SOSPeerInfoRef retiree = SOSPeerInfoCreateFromData(kCFAllocatorDefault, NULL, (CFDataRef) value);
+
+ CFSetAddValue(account->retirees, retiree);
+
+ CFReleaseNull(retiree);
+ }
+ });
+
+ require_quiet(array && *der_p, fail);
+
+ CFArrayForEach(array, ^(const void *value) {
+ CFDataRef circleData = NULL;
+ CFDataRef fullPeerInfoData = NULL;
+
+ if (isData(value)) {
+ circleData = (CFDataRef) value;
+ } else if (isArray(value)) {
+ CFArrayRef pair = (CFArrayRef) value;
+
+ CFTypeRef circleObject = CFArrayGetValueAtIndex(pair, 0);
+ CFTypeRef fullPeerInfoObject = CFArrayGetValueAtIndex(pair, 1);
+
+ if (CFArrayGetCount(pair) == 2 && isData(circleObject) && isData(fullPeerInfoObject)) {
+ circleData = (CFDataRef) circleObject;
+ fullPeerInfoData = (CFDataRef) fullPeerInfoObject;
+ }
+ }
+
+ if (circleData) {
+ SOSCircleRef circle = SOSCircleCreateFromData(kCFAllocatorDefault, circleData, error);
+ require_quiet(circle && CFEqualSafe(circle_name, SOSCircleGetName(circle)), fail);
+
+ account->trusted_circle = CFRetainSafe(circle);
+
+ if(fullPeerInfoData) {
+ account->my_identity = SOSFullPeerInfoCreateFromData(kCFAllocatorDefault, fullPeerInfoData, NULL);
+ }
+
+ fail:
+ CFReleaseNull(circle);
+ }
+ });
+ CFReleaseNull(array);
+
+ require_action_quiet(SOSAccountEnsureFactoryCircles(account), fail,
+ SOSCreateError(kSOSErrorBadFormat, CFSTR("Cannot EnsureFactoryCircles"), (error != NULL) ? *error : NULL, error));
+
+ result = CFRetainSafe(account);
+
+fail:
+ CFReleaseNull(account);
+ return result;
+}
+
+static size_t der_sizeof_data_optional(CFDataRef data)
+{
+ return data ? der_sizeof_data(data, NULL) : 0;
+
+}
+
+static uint8_t* der_encode_data_optional(CFDataRef data, CFErrorRef *error,
+ const uint8_t *der, uint8_t *der_end)
+{
+ return data ? der_encode_data(data, error, der, der_end) : der_end;
+
+}
+
+static const uint8_t* der_decode_data_optional(CFAllocatorRef allocator, CFOptionFlags mutability,
+ CFDataRef* data, CFErrorRef *error,
+ const uint8_t* der, const uint8_t *der_end)
+{
+ const uint8_t *dt_end = der_decode_data(allocator, mutability, data, NULL, der, der_end);
+
+ return dt_end ? dt_end : der;
+}
+
+static SOSAccountRef SOSAccountCreateFromRemainingDER_v7(CFAllocatorRef allocator,
+ SOSDataSourceFactoryRef factory,
+ CFErrorRef* error,
+ const uint8_t** der_p, const uint8_t *der_end)
+{
+ SOSAccountRef account = NULL;
+ SOSAccountRef result = NULL;
+
+ {
+ CFDictionaryRef decoded_gestalt = NULL;
+ *der_p = der_decode_dictionary(kCFAllocatorDefault, kCFPropertyListImmutable, &decoded_gestalt, error,
+ *der_p, der_end);
+
+ if (*der_p == 0)
+ return NULL;
+
+ account = SOSAccountCreateBasic(allocator, decoded_gestalt, factory);
+ CFReleaseNull(decoded_gestalt);
+ }
+
+ account->trusted_circle = SOSCircleCreateFromDER(kCFAllocatorDefault, error, der_p, der_end);
+ *der_p = der_decode_fullpeer_or_null(kCFAllocatorDefault, &account->my_identity, error, *der_p, der_end);
+
+ uint64_t tmp_departure_code = kSOSNeverAppliedToCircle;
+ *der_p = ccder_decode_uint64(&tmp_departure_code, *der_p, der_end);
+ *der_p = ccder_decode_bool(&account->user_public_trusted, *der_p, der_end);
+ *der_p = der_decode_public_bytes(kCFAllocatorDefault, kSecECDSAAlgorithmID, &account->user_public, error, *der_p, der_end);
+ *der_p = der_decode_public_bytes(kCFAllocatorDefault, kSecECDSAAlgorithmID, &account->previous_public, error, *der_p, der_end);
+ *der_p = der_decode_data_or_null(kCFAllocatorDefault, &account->user_key_parameters, error, *der_p, der_end);
+ account->retirees = SOSPeerInfoSetCreateFromArrayDER(kCFAllocatorDefault, &kSOSPeerSetCallbacks, error, der_p, der_end);
+ *der_p = der_decode_data_optional(kCFAllocatorDefault, kCFPropertyListImmutable, &account->backup_key, error, *der_p, der_end);
+
+ account->departure_code = (enum DepartureReason) tmp_departure_code;
+
+ require_action_quiet(*der_p && *der_p == der_end, fail,
+ SOSCreateError(kSOSErrorBadFormat, CFSTR("Didn't consume all bytes v7"), (error != NULL) ? *error : NULL, error));
+
+ result = CFRetainSafe(account);
+
+fail:
+ CFReleaseNull(account);
+ return result;
+}
+
+
+static SOSAccountRef SOSAccountCreateFromRemainingDER_v8(CFAllocatorRef allocator,
+ SOSDataSourceFactoryRef factory,
+ CFErrorRef* error,
+ const uint8_t** der_p, const uint8_t *der_end)
+{
+ SOSAccountRef account = NULL;
+ SOSAccountRef result = NULL;
+
+ {
+ CFDictionaryRef decoded_gestalt = NULL;
+ *der_p = der_decode_dictionary(kCFAllocatorDefault, kCFPropertyListImmutable, &decoded_gestalt, error,
+ *der_p, der_end);
+
+ if (*der_p == 0)
+ return NULL;
+
+ account = SOSAccountCreateBasic(allocator, decoded_gestalt, factory);
+ CFReleaseNull(decoded_gestalt);
+ }
+ CFReleaseNull(account->trusted_circle);
+ account->trusted_circle = SOSCircleCreateFromDER(kCFAllocatorDefault, error, der_p, der_end);
+ CFReleaseNull(account->my_identity);
+ *der_p = der_decode_fullpeer_or_null(kCFAllocatorDefault, &account->my_identity, error, *der_p, der_end);
+
+ uint64_t tmp_departure_code = kSOSNeverAppliedToCircle;
+ *der_p = ccder_decode_uint64(&tmp_departure_code, *der_p, der_end);
+ *der_p = ccder_decode_bool(&account->user_public_trusted, *der_p, der_end);
+ *der_p = der_decode_public_bytes(kCFAllocatorDefault, kSecECDSAAlgorithmID, &account->user_public, error, *der_p, der_end);
+ *der_p = der_decode_public_bytes(kCFAllocatorDefault, kSecECDSAAlgorithmID, &account->previous_public, error, *der_p, der_end);
+ *der_p = der_decode_data_or_null(kCFAllocatorDefault, &account->user_key_parameters, error, *der_p, der_end);
+ CFReleaseNull(account->retirees);
+ account->retirees = SOSPeerInfoSetCreateFromArrayDER(kCFAllocatorDefault, &kSOSPeerSetCallbacks, error, der_p, der_end);
+ *der_p = der_decode_data_optional(kCFAllocatorDefault, kCFPropertyListImmutable, &account->backup_key, error, *der_p, der_end);
+ {
+ CFDictionaryRef expansion = NULL;
+ *der_p = der_decode_dictionary(kCFAllocatorDefault, kCFPropertyListImmutable, &expansion, error,
+ *der_p, der_end);
+
+ if (*der_p == 0)
+ return NULL;
+
+ CFReleaseNull(account->expansion);
+ account->expansion = CFDictionaryCreateMutableCopy(kCFAllocatorDefault, 0, expansion);
+ CFReleaseNull(expansion);
+ }
+
+ account->departure_code = (enum DepartureReason) tmp_departure_code;
+
+ require_action_quiet(*der_p && *der_p == der_end, fail,
+ SOSCreateError(kSOSErrorBadFormat, CFSTR("Didn't consume all bytes v7"), (error != NULL) ? *error : NULL, error));
+
+ result = CFRetainSafe(account);
+
+fail:
+ CFReleaseNull(account);
+ return result;
+}
+
+//
+// Version History for Account
+//
+// 1-5 - InnsbruckTaos/Cab; Never supported even for upgrading.
+// 6 - First version used in the field.
+// 7 - One Circle version
+// 8 - Adding expansion dictionary
+//
+
+#define CURRENT_ACCOUNT_PERSISTENT_VERSION 8
+
+SOSAccountRef SOSAccountCreateFromDER(CFAllocatorRef allocator,
+ SOSDataSourceFactoryRef factory,
+ CFErrorRef* error,
+ const uint8_t** der_p, const uint8_t *der_end)
+{
+ SOSAccountRef account = NULL;
+ SOSAccountRef result = NULL;
+ uint64_t version = 0;
+
+ const uint8_t *sequence_end;
+ *der_p = ccder_decode_constructed_tl(CCDER_CONSTRUCTED_SEQUENCE, &sequence_end, *der_p, der_end);
+ *der_p = ccder_decode_uint64(&version, *der_p, sequence_end);
+ require_action_quiet(*der_p, errOut,
+ SOSCreateError(kSOSErrorBadFormat, CFSTR("Version parsing failed"), (error != NULL) ? *error : NULL, error));
+
+ switch (version) {
+ case CURRENT_ACCOUNT_PERSISTENT_VERSION:
+ account = SOSAccountCreateFromRemainingDER_v8(allocator, factory, error, der_p, sequence_end);
+ break;
+
+ case 7:
+ account = SOSAccountCreateFromRemainingDER_v7(allocator, factory, error, der_p, sequence_end);
+ break;
+
+ case 6:
+ account = SOSAccountCreateFromRemainingDER_v6(allocator, factory, error, der_p, sequence_end);
+ break;
+
+ default:
+ SOSCreateErrorWithFormat(kSOSErrorBadFormat, (error != NULL) ? *error : NULL, error,
+ NULL, CFSTR("Unsupported version (%llu)"), version);
+ break;
+ }
+
+ require_quiet(account, errOut);
+
+ require_quiet(*der_p && *der_p == sequence_end, errOut);
+
+ /* I may not always have an identity, but when I do, it has a private key */
+ if(account->my_identity) {
+ require_action_quiet(SOSFullPeerInfoPrivKeyExists(account->my_identity), errOut, secnotice("account", "No private key associated with my_identity, resetting"));
+ }
+
+ require_action_quiet(SOSAccountEnsureFactoryCircles(account), errOut,
+ SOSCreateError(kSOSErrorBadFormat, CFSTR("Cannot EnsureFactoryCircles"), (error != NULL) ? *error : NULL, error));
+
+ SOSPeerInfoRef myPI = SOSAccountGetMyPeerInfo(account);
+ if (myPI) {
+ // if we were syncing legacy keychain, ensure we include those legacy views.
+ bool wasSyncingLegacy = !SOSPeerInfoVersionIsCurrent(myPI) && SOSAccountIsInCircle(account, NULL);
+ CFSetRef viewsToEnsure = SOSViewsCreateDefault(wasSyncingLegacy, NULL);
+ SOSAccountUpdateFullPeerInfo(account, viewsToEnsure);
+ CFReleaseNull(viewsToEnsure);
+ }
+
+ SOSAccountCheckHasBeenInSync(account);
+
+ result = CFRetainSafe(account);
+
+errOut:
+ CFReleaseNull(account);
+ return result;
+}
+
+SOSAccountRef SOSAccountCreateFromData(CFAllocatorRef allocator, CFDataRef circleData,
+ SOSDataSourceFactoryRef factory,
+ CFErrorRef* error)
+{
+ size_t size = CFDataGetLength(circleData);
+ const uint8_t *der = CFDataGetBytePtr(circleData);
+ SOSAccountRef account = SOSAccountCreateFromDER(allocator, factory,
+ error,
+ &der, der + size);
+ return account;
+}
+
+CFMutableSetRef SOSPeerInfoSetCreateFromArrayDER(CFAllocatorRef allocator, const CFSetCallBacks *callbacks, CFErrorRef* error,
+ const uint8_t** der_p, const uint8_t *der_end);
+size_t SOSPeerInfoSetGetDEREncodedArraySize(CFSetRef pia, CFErrorRef *error);
+uint8_t* SOSPeerInfoSetEncodeToArrayDER(CFSetRef pia, CFErrorRef* error, const uint8_t* der, uint8_t* der_end);
+
+size_t SOSAccountGetDEREncodedSize(SOSAccountRef account, CFErrorRef *error)
+{
+ size_t sequence_size = 0;
+ uint64_t version = CURRENT_ACCOUNT_PERSISTENT_VERSION;
+
+ require_quiet(accumulate_size(&sequence_size, ccder_sizeof_uint64(version)), fail);
+ require_quiet(accumulate_size(&sequence_size, der_sizeof_dictionary(account->gestalt, error)), fail);
+ require_quiet(accumulate_size(&sequence_size, SOSCircleGetDEREncodedSize(account->trusted_circle, error)), fail);
+ require_quiet(accumulate_size(&sequence_size, der_sizeof_fullpeer_or_null(account->my_identity, error)), fail);
+ require_quiet(accumulate_size(&sequence_size, ccder_sizeof_uint64(account->departure_code)), fail);
+ require_quiet(accumulate_size(&sequence_size, ccder_sizeof_bool(account->user_public_trusted, error)), fail);
+ require_quiet(accumulate_size(&sequence_size, der_sizeof_public_bytes(account->user_public, error)), fail);
+ require_quiet(accumulate_size(&sequence_size, der_sizeof_public_bytes(account->previous_public, error)), fail);
+ require_quiet(accumulate_size(&sequence_size, der_sizeof_data_or_null(account->user_key_parameters, error)), fail);
+ require_quiet(accumulate_size(&sequence_size, SOSPeerInfoSetGetDEREncodedArraySize(account->retirees, error)), fail);
+ accumulate_size(&sequence_size, der_sizeof_data_optional(account->backup_key));
+ require_quiet(accumulate_size(&sequence_size, der_sizeof_dictionary(account->expansion, error)), fail);
+
+ return ccder_sizeof(CCDER_CONSTRUCTED_SEQUENCE, sequence_size);
+
+fail:
+ SecCFDERCreateError(kSecDERErrorUnknownEncoding, CFSTR("don't know how to encode"), NULL, error);
+ return 0;
+}
+
+uint8_t* SOSAccountEncodeToDER(SOSAccountRef account, CFErrorRef* error, const uint8_t* der, uint8_t* der_end)
+{
+ uint64_t version = CURRENT_ACCOUNT_PERSISTENT_VERSION;
+ der_end = ccder_encode_constructed_tl(CCDER_CONSTRUCTED_SEQUENCE, der_end, der,
+ ccder_encode_uint64(version, der,
+ der_encode_dictionary(account->gestalt, error, der,
+ SOSCircleEncodeToDER(account->trusted_circle, error, der,
+ der_encode_fullpeer_or_null(account->my_identity, error, der,
+ ccder_encode_uint64(account->departure_code, der,
+ ccder_encode_bool(account->user_public_trusted, der,
+ der_encode_public_bytes(account->user_public, error, der,
+ der_encode_public_bytes(account->previous_public, error, der,
+ der_encode_data_or_null(account->user_key_parameters, error, der,
+ SOSPeerInfoSetEncodeToArrayDER(account->retirees, error, der,
+ der_encode_data_optional(account->backup_key, error, der,
+ der_encode_dictionary(account->expansion, error, der,
+
+
+ der_end)))))))))))));
+
+ return der_end;
+}
+
+/************************/
+
+CFDataRef SOSAccountCopyEncodedData(SOSAccountRef account, CFAllocatorRef allocator, CFErrorRef *error)
+{
+ size_t size = SOSAccountGetDEREncodedSize(account, error);
+ if (size == 0)
+ return NULL;
+ uint8_t buffer[size];
+ uint8_t* start = SOSAccountEncodeToDER(account, error, buffer, buffer + sizeof(buffer));
+ CFDataRef result = CFDataCreate(kCFAllocatorDefault, start, size);
+ return result;
+}
+
projects / apple / security.git / blobdiff