--- /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 "keychain/SecureObjectSync/SOSPeerInfoCollections.h"
+
+#include <CoreFoundation/CoreFoundation.h>
+#include <utilities/SecCFWrappers.h>
+#include <utilities/SecCFError.h>
+#include <utilities/SecXPCError.h>
+#include <corecrypto/ccder.h>
+#include "keychain/SecureObjectSync/SOSInternal.h"
+#include <AssertMacros.h>
+#include "keychain/SecureObjectSync/SOSPeerInfoDER.h"
+
+//
+// PeerInfoSetby ID handling
+//
+
+//
+//
+// CFSetRetainCallback
+//
+
+static CFStringRef GetIDOrString(const void *object) {
+ return isSOSPeerInfo(object) ?
+ SOSPeerInfoGetPeerID((SOSPeerInfoRef)object) :
+ (isString(object) ? (CFStringRef) object : NULL);
+}
+
+static Boolean SOSPeerInfoIDEqual(const void *value1, const void *value2)
+{
+ return CFEqualSafe(GetIDOrString(value1), GetIDOrString(value2));
+}
+
+static CFHashCode SOSPeerInfoIDHash(const void *value)
+{
+ return CFHash(GetIDOrString(value));
+}
+
+bool SOSPeerInfoSetContainsIdenticalPeers(CFSetRef set1, CFSetRef set2){
+
+ __block bool result = true;
+
+ if(!CFEqualSafe(set1, set2))
+ return false;
+
+ CFSetForEach(set1, ^(const void *value) {
+ SOSPeerInfoRef peer1 = (SOSPeerInfoRef)value;
+ SOSPeerInfoRef peer2 = (SOSPeerInfoRef)CFSetGetValue(set2, peer1);
+ result &= CFEqualSafe(peer1, peer2);
+ });
+ return result;
+}
+const CFSetCallBacks kSOSPeerSetCallbacks = {0, SecCFRetainForCollection, SecCFReleaseForCollection, CFCopyDescription, SOSPeerInfoIDEqual, SOSPeerInfoIDHash};
+
+CFMutableSetRef CFSetCreateMutableForSOSPeerInfosByID(CFAllocatorRef allocator)
+{
+ return CFSetCreateMutable(allocator, 0, &kSOSPeerSetCallbacks);
+}
+
+CFMutableSetRef CFSetCreateMutableForSOSPeerInfosByIDWithArray(CFAllocatorRef allocator, CFArrayRef peerInfos)
+{
+ CFMutableSetRef newSet = CFSetCreateMutableForSOSPeerInfosByID(allocator);
+
+ CFArrayForEach(peerInfos, ^(const void *value) {
+ SOSPeerInfoRef peer = asSOSPeerInfo(value);
+ if (peer) {
+ CFSetAddValue(newSet, peer);
+ }
+ });
+
+ return newSet;
+}
+
+SOSPeerInfoRef SOSPeerInfoSetFindByID(CFSetRef set, CFStringRef id) {
+ return (SOSPeerInfoRef) CFSetGetValue(set, id);
+}
+
+//
+// CFArray of Peer Info handling
+//
+
+void CFArrayOfSOSPeerInfosSortByID(CFMutableArrayRef peerInfoArray)
+{
+ CFArraySortValues(peerInfoArray, CFRangeMake(0, CFArrayGetCount(peerInfoArray)), SOSPeerInfoCompareByID, NULL);
+}
+
+
+//
+// PeerInfoArray encoding decoding
+//
+
+CFMutableArrayRef SOSPeerInfoArrayCreateFromDER(CFAllocatorRef allocator, CFErrorRef* error,
+ const uint8_t** der_p, const uint8_t *der_end) {
+ CFMutableArrayRef pia = CFArrayCreateMutableForCFTypes(allocator);
+
+ const uint8_t *sequence_end;
+
+ *der_p = ccder_decode_constructed_tl(CCDER_CONSTRUCTED_SEQUENCE, &sequence_end, *der_p, der_end);
+
+ require_action(*der_p, fail, SOSCreateError(kSOSErrorBadFormat, CFSTR("Bad Peer Info Array Sequence Header"), NULL, error));
+
+ while (sequence_end != *der_p) {
+ SOSPeerInfoRef pi = SOSPeerInfoCreateFromDER(allocator, error, der_p, sequence_end);
+
+ if (pi == NULL || *der_p == NULL) {
+ SOSCreateError(kSOSErrorBadFormat, CFSTR("Bad Peer Info Array DER"), (error != NULL ? *error : NULL), error);
+ CFReleaseNull(pi);
+ goto fail;
+ }
+
+ CFArrayAppendValue(pia, pi);
+ CFReleaseSafe(pi);
+ }
+
+ if (!pia)
+ *der_p = NULL;
+ return pia;
+
+fail:
+ CFReleaseNull(pia);
+ *der_p = NULL;
+ return NULL;
+}
+
+size_t SOSPeerInfoArrayGetDEREncodedSize(CFArrayRef pia, CFErrorRef *error) {
+ __block size_t array_size = 0;
+ __block bool fail = false;
+
+ CFArrayForEach(pia, ^(const void *value) {
+ if (isSOSPeerInfo(value)) {
+ SOSPeerInfoRef pi = (SOSPeerInfoRef) value;
+ size_t pi_size = SOSPeerInfoGetDEREncodedSize(pi, error);
+
+ fail = (pi_size == 0);
+ array_size += pi_size;
+ } else {
+ SOSCreateError(kSOSErrorUnexpectedType, CFSTR("Non SOSPeerInfo in array"), (error != NULL ? *error : NULL), error);
+ fail = true;
+ }
+ });
+
+ return fail ? 0 : ccder_sizeof(CCDER_CONSTRUCTED_SEQUENCE, array_size);
+}
+
+uint8_t* SOSPeerInfoArrayEncodeToDER(CFArrayRef pia, CFErrorRef* error, const uint8_t* der, uint8_t* der_end_param) {
+
+ uint8_t* const sequence_end = der_end_param;
+ __block uint8_t* der_end = der_end_param;
+
+ CFArrayForEachReverse(pia, ^(const void *value) {
+ SOSPeerInfoRef pi = (SOSPeerInfoRef) value;
+ if (CFGetTypeID(pi) != SOSPeerInfoGetTypeID()) {
+ SOSCreateError(kSOSErrorUnexpectedType, CFSTR("Non SOSPeerInfo in array"), NULL, error);
+ der_end = NULL; // Indicate error and continue.
+ }
+ if (der_end)
+ der_end = SOSPeerInfoEncodeToDER(pi, error, der, der_end);
+ });
+
+ if (der_end == NULL)
+ return NULL;
+
+ return ccder_encode_constructed_tl(CCDER_CONSTRUCTED_SEQUENCE, sequence_end, der, der_end);
+}
+
+
+CFMutableSetRef SOSPeerInfoSetCreateFromArrayDER(CFAllocatorRef allocator, const CFSetCallBacks *callbacks, CFErrorRef* error,
+ const uint8_t** der_p, const uint8_t *der_end) {
+ CFMutableSetRef result = NULL;
+
+ CFArrayRef peers = SOSPeerInfoArrayCreateFromDER(allocator, error, der_p, der_end);
+
+ if (peers) {
+ result = CFSetCreateMutable(allocator, 0, callbacks);
+ CFSetSetValues(result, peers);
+ }
+
+ CFReleaseNull(peers);
+ return result;
+}
+
+size_t SOSPeerInfoSetGetDEREncodedArraySize(CFSetRef pia, CFErrorRef *error) {
+ __block size_t array_size = 0;
+ __block bool fail = false;
+
+ CFSetForEach(pia, ^(const void *value) {
+ if (isSOSPeerInfo(value)) {
+ SOSPeerInfoRef pi = (SOSPeerInfoRef) value;
+ size_t pi_size = SOSPeerInfoGetDEREncodedSize(pi, error);
+
+ fail = (pi_size == 0);
+ array_size += pi_size;
+ } else {
+ SOSCreateError(kSOSErrorUnexpectedType, CFSTR("Non SOSPeerInfo in array"), (error != NULL ? *error : NULL), error);
+ fail = true;
+ }
+ });
+
+ return fail ? 0 : ccder_sizeof(CCDER_CONSTRUCTED_SEQUENCE, array_size);
+}
+
+uint8_t* SOSPeerInfoSetEncodeToArrayDER(CFSetRef pis, CFErrorRef* error, const uint8_t* der, uint8_t* der_end) {
+ CFMutableArrayRef pia = CFSetCopyValues(pis);
+
+ CFArrayOfSOSPeerInfosSortByID(pia);
+
+ uint8_t* result = SOSPeerInfoArrayEncodeToDER(pia, error, der, der_end);
+
+ CFReleaseNull(pia);
+
+ return result;
+}
+
+
+
+CFArrayRef CreateArrayOfPeerInfoWithXPCObject(xpc_object_t peerArray, CFErrorRef* error) {
+ if (!peerArray) {
+ SecCFCreateErrorWithFormat(kSecXPCErrorUnexpectedNull, sSecXPCErrorDomain, NULL, error, NULL, CFSTR("Unexpected Null Array to encode"));
+ return NULL;
+ }
+
+ if (xpc_get_type(peerArray) != XPC_TYPE_DATA) {
+ SecCFCreateErrorWithFormat(kSecXPCErrorUnexpectedType, sSecXPCErrorDomain, NULL, error, NULL, CFSTR("Array of peer info not data"));
+ return NULL;
+ }
+
+ const uint8_t* der = xpc_data_get_bytes_ptr(peerArray);
+ const uint8_t* der_end = der + xpc_data_get_length(peerArray);
+
+ return SOSPeerInfoArrayCreateFromDER(kCFAllocatorDefault, error, &der, der_end);
+}
+
+xpc_object_t CreateXPCObjectWithArrayOfPeerInfo(CFArrayRef array, CFErrorRef *error) {
+ size_t data_size = SOSPeerInfoArrayGetDEREncodedSize(array, error);
+ if (data_size == 0)
+ return NULL;
+ uint8_t *data = (uint8_t *)malloc(data_size);
+ if (!data) return NULL;
+
+ xpc_object_t result = NULL;
+ if (SOSPeerInfoArrayEncodeToDER(array, error, data, data + data_size))
+ result = xpc_data_create(data, data_size);
+
+ free(data);
+ return result;
+}
projects / apple / security.git / blobdiff