+++ /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@
- */
-
-
-/*
- * SOSManifest.c - Manifest object and some manipulation around it
- */
-
-#include <SecureObjectSync/SOSManifest.h>
-#include <SecureObjectSync/SOSDigestVector.h>
-#include <utilities/SecCFError.h>
-#include <utilities/SecCFWrappers.h>
-
-#include <securityd/SecDbKeychainItem.h> // for kc_copy_sha1, which needs to move to utilities
-
-CFStringRef kSOSManifestErrorDomain = CFSTR("com.apple.security.sos.manifest.error");
-
-/* SOSManifest implementation. */
-struct __OpaqueSOSManifest {
- CFRuntimeBase _base;
- CFDataRef digest;
- CFDataRef digestVector;
- struct SOSDigestVector dv;
-};
-
-CFGiblisWithCompareFor(SOSManifest)
-
-static void SOSManifestDestroy(CFTypeRef cf) {
- SOSManifestRef mf = (SOSManifestRef)cf;
- CFReleaseSafe(mf->digest);
- CFReleaseSafe(mf->digestVector);
-}
-
-static Boolean SOSManifestCompare(CFTypeRef cf1, CFTypeRef cf2) {
- SOSManifestRef mf1 = (SOSManifestRef)cf1;
- SOSManifestRef mf2 = (SOSManifestRef)cf2;
- return CFEqualSafe(SOSManifestGetDigest(mf1, NULL), SOSManifestGetDigest(mf2, NULL));
-}
-
-SOSManifestRef SOSManifestCreateWithData(CFDataRef data, CFErrorRef *error)
-{
- SOSManifestRef manifest = CFTypeAllocate(SOSManifest, struct __OpaqueSOSManifest, kCFAllocatorDefault);
- if (!manifest)
- SecCFCreateErrorWithFormat(kSOSManifestCreateError, kSOSManifestErrorDomain, NULL, error, NULL, CFSTR("Failed to create manifest"));
- else if (data)
- manifest->digestVector = CFDataCreateCopy(kCFAllocatorDefault, data);
- else
- manifest->digestVector = CFDataCreate(kCFAllocatorDefault, NULL, 0);
-
- assert(!manifest || manifest->digestVector != NULL);
- return manifest;
-}
-
-SOSManifestRef SOSManifestCreateWithBytes(const uint8_t *bytes, size_t len,
- CFErrorRef *error) {
- CFDataRef data = CFDataCreate(kCFAllocatorDefault, bytes, (CFIndex)len);
- SOSManifestRef manifest = SOSManifestCreateWithData(data, error);
- CFReleaseSafe(data);
- return manifest;
-}
-
-size_t SOSManifestGetSize(SOSManifestRef m) {
- return m ? (size_t)CFDataGetLength(m->digestVector) : 0;
-}
-
-size_t SOSManifestGetCount(SOSManifestRef m) {
- return m ? SOSManifestGetSize(m) / SOSDigestSize : 0;
-}
-
-const uint8_t *SOSManifestGetBytePtr(SOSManifestRef m) {
- return m ? CFDataGetBytePtr(m->digestVector) : NULL;
-}
-
-CFDataRef SOSManifestGetData(SOSManifestRef m) {
- return m ? m->digestVector : NULL;
-}
-
-const struct SOSDigestVector *SOSManifestGetDigestVector(SOSManifestRef manifest) {
- if (!manifest) {
- static struct SOSDigestVector nulldv = SOSDigestVectorInit;
- return &nulldv;
- }
- manifest->dv.capacity = manifest->dv.count = SOSManifestGetCount(manifest);
- manifest->dv.digest = (void *)SOSManifestGetBytePtr(manifest);
- manifest->dv.unsorted = false;
- return &manifest->dv;
-}
-
-bool SOSManifestDiff(SOSManifestRef a, SOSManifestRef b,
- SOSManifestRef *a_minus_b, SOSManifestRef *b_minus_a,
- CFErrorRef *error) {
- bool result = true;
- struct SOSDigestVector dvab = SOSDigestVectorInit, dvba = SOSDigestVectorInit;
- SOSDigestVectorDiffSorted(SOSManifestGetDigestVector(a), SOSManifestGetDigestVector(b), &dvab, &dvba);
- if (a_minus_b) {
- *a_minus_b = SOSManifestCreateWithDigestVector(&dvab, error);
- if (!*a_minus_b)
- result = false;
- }
- if (b_minus_a) {
- *b_minus_a = SOSManifestCreateWithDigestVector(&dvba, error);
- if (!*b_minus_a)
- result = false;
- }
- SOSDigestVectorFree(&dvab);
- SOSDigestVectorFree(&dvba);
- return result;
-}
-
-
-SOSManifestRef SOSManifestCreateWithDigestVector(struct SOSDigestVector *dv, CFErrorRef *error) {
- if (!dv) return NULL;
- if (dv->unsorted) SOSDigestVectorSort(dv);
- return SOSManifestCreateWithBytes((const uint8_t *)dv->digest, dv->count * SOSDigestSize, error);
-}
-
-SOSManifestRef SOSManifestCreateWithPatch(SOSManifestRef base,
- SOSManifestRef removals,
- SOSManifestRef additions,
- CFErrorRef *error) {
- struct SOSDigestVector dvresult = SOSDigestVectorInit;
- SOSManifestRef result;
- if (SOSDigestVectorPatchSorted(SOSManifestGetDigestVector(base), SOSManifestGetDigestVector(removals),
- SOSManifestGetDigestVector(additions), &dvresult, error)) {
- result = SOSManifestCreateWithDigestVector(&dvresult, error);
- } else {
- result = NULL;
- }
- SOSDigestVectorFree(&dvresult);
- return result;
-}
-
-// This is the set of elements in m2, but not in m1.
-SOSManifestRef SOSManifestCreateComplement(SOSManifestRef m1,
- SOSManifestRef m2,
- CFErrorRef *error) {
- // m2 \ emptySet => m2
- if (SOSManifestGetCount(m1) == 0)
- return CFRetainSafe(m2);
-
- struct SOSDigestVector dvresult = SOSDigestVectorInit;
- SOSManifestRef result;
- SOSDigestVectorComplementSorted(SOSManifestGetDigestVector(m1), SOSManifestGetDigestVector(m2), &dvresult);
- result = SOSManifestCreateWithDigestVector(&dvresult, error);
- SOSDigestVectorFree(&dvresult);
- return result;
-}
-
-SOSManifestRef SOSManifestCreateIntersection(SOSManifestRef m1,
- SOSManifestRef m2,
- CFErrorRef *error) {
- struct SOSDigestVector dvresult = SOSDigestVectorInit;
- SOSManifestRef result;
- SOSDigestVectorIntersectSorted(SOSManifestGetDigestVector(m1), SOSManifestGetDigestVector(m2), &dvresult);
- result = SOSManifestCreateWithDigestVector(&dvresult, error);
- SOSDigestVectorFree(&dvresult);
- return result;
-}
-
-SOSManifestRef SOSManifestCreateUnion(SOSManifestRef m1,
- SOSManifestRef m2,
- CFErrorRef *error) {
- struct SOSDigestVector dvresult = SOSDigestVectorInit;
- SOSManifestRef result;
- SOSDigestVectorUnionSorted(SOSManifestGetDigestVector(m1), SOSManifestGetDigestVector(m2), &dvresult);
- result = SOSManifestCreateWithDigestVector(&dvresult, error);
- SOSDigestVectorFree(&dvresult);
- return result;
-}
-
-void SOSManifestForEach(SOSManifestRef m, void(^block)(CFDataRef e, bool *stop)) {
- CFDataRef e;
- const uint8_t *p, *q;
- bool stop = false;
- for (p = SOSManifestGetBytePtr(m), q = p + SOSManifestGetSize(m);
- !stop && p + SOSDigestSize <= q; p += SOSDigestSize) {
- e = CFDataCreateWithBytesNoCopy(0, p, SOSDigestSize, kCFAllocatorNull);
- if (e) {
- block(e, &stop);
- CFRelease(e);
- }
- }
-}
-
-CFDataRef SOSManifestGetDigest(SOSManifestRef m, CFErrorRef *error) {
- if (!m) return NULL;
- if (!m->digest)
- m->digest = kc_copy_sha1(SOSManifestGetSize(m), SOSManifestGetBytePtr(m), error);
- return m->digest;
-}
-
-static CFStringRef SOSManifestCopyFormatDescription(CFTypeRef cf, CFDictionaryRef formatOptions) {
- SOSManifestRef m = (SOSManifestRef)cf;
- CFMutableStringRef desc = CFStringCreateMutable(0, 0);
- CFStringAppendFormat(desc, NULL, CFSTR("<[%zu]"), SOSManifestGetCount(m));
- __block size_t maxEntries = 8;
- SOSManifestForEach(m, ^(CFDataRef e, bool *stop) {
- const uint8_t *d = CFDataGetBytePtr(e);
- CFStringAppendFormat(desc, NULL, CFSTR(" %02X%02X%02X%02X"), d[0], d[1], d[2], d[3]);
- if (!--maxEntries) {
- CFStringAppend(desc, CFSTR("..."));
- *stop = true;
- }
- });
- CFStringAppend(desc, CFSTR(">"));
-
- return desc;
-}
projects / apple / security.git / blobdiff