-/*
- * 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 <Security/SecureObjectSync/SOSPeerInfoCollections.h>
-
-#include <CoreFoundation/CoreFoundation.h>
-#include <utilities/SecCFWrappers.h>
-#include <utilities/SecCFError.h>
-#include <utilities/SecXPCError.h>
-#include <corecrypto/ccder.h>
-#include <Security/SecureObjectSync/SOSInternal.h>
-#include <AssertMacros.h>
-#include <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