+/*
+ * Copyright (c) 2015 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@
+ */
+
+/*
+ * SOSViewManager.c - Implementation of a view manager
+ */
+
+#include <Security/SecureObjectSync/SOSViewManager.h>
+#include <Security/SecureObjectSync/SOSInternal.h>
+
+#if 0
+/* SOSViewManager implementation. */
+struct __OpaqueSOSViewManager {
+ CFRuntimeBase _base;
+ CFMutableDictionaryRef views;
+};
+
+const CFStringRef kSOSContextChildInfoKey = CFSTR("cntx");
+const CFStringRef kSOSFunctionChildInfoKey = CFSTR("fctn");
+const CFStringRef kSOSViewNamesChildInfoKey = CFSTR("vwns");
+
+
+static CFStringRef SOSViewManagerCopyFormatDescription(CFTypeRef cf, CFDictionaryRef formatOptions) {
+ SOSViewManagerRef vmgr = (SOSViewManagerRef)cf;
+ CFStringRef desc = CFStringCreateWithFormat(kCFAllocatorDefault, formatOptions, CFSTR("<ViewManager %@ >"), vmgr->views);
+ return desc;
+}
+
+static void SOSViewManagerDestroy(CFTypeRef cf) {
+ SOSViewManagerRef vmgr = (SOSViewManagerRef)cf;
+ CFReleaseSafe(vmgr->views);
+}
+
+CFGiblisFor(SOSViewManager);
+
+
+static SOSViewManagerRef SOSViewManagerCreate(CFAllocatorRef allocator, CFErrorRef *error) {
+ SOSViewManagerRef vmgr = NULL;
+ vmgr = CFTypeAllocate(SOSViewManager, struct __OpaqueSOSViewManager, allocator);
+ if (vmgr)
+ vmgr->views = CFDictionaryCreateMutableForCFTypes(allocator);
+ return vmgr;
+}
+
+CFGiblisGetSingleton(SOSViewManagerRef, SOSGetViewManager, sSOSViewManager, ^{
+ *sSOSViewManager = SOSViewManagerCreate(kCFAllocatorDefault, NULL);
+});
+
+
+static CFStringRef CFStringCreateWithViewNames(CFArrayRef viewNames) {
+ CFIndex count = CFArrayGetCount(viewNames);
+ CFMutableArrayRef mvn = CFArrayCreateMutableCopy(kCFAllocatorDefault, count, viewNames);
+ CFArraySortValues(mvn, CFRangeMake(0, count), (CFComparatorFunction)CFStringCompare, 0);
+ CFStringRef string = CFStringCreateByCombiningStrings(kCFAllocatorDefault, mvn, CFSTR(":"));
+ CFRelease(mvn);
+ return string;
+}
+
+static SOSViewRef SOSViewManangerCopyViewWithName(SOSViewManagerRef vmgr, CFMutableDictionaryRef referencedViews, CFStringRef viewName, bool isConcrete, CFErrorRef *error) {
+ SOSViewRef view = (SOSViewRef)CFDictionaryGetValue(vmgr->views, viewName);
+ if (view) {
+ if (isConcrete)
+ SOSViewSetConcrete(view, true);
+ CFRetain(view);
+ } else {
+ view = SOSViewCreate(CFGetAllocator(vmgr), isConcrete, NULL, error);
+ if (view) {
+ CFDictionarySetValue(vmgr->views, viewName, view);
+ }
+ // TODO: Query for the initial manifest.
+ }
+ if (view) {
+ if (isConcrete)
+ CFDictionarySetValue(referencedViews, viewName, kCFBooleanTrue);
+ else if (!CFDictionaryContainsKey(referencedViews, viewName))
+ CFDictionarySetValue(referencedViews, viewName, kCFBooleanFalse);
+ }
+ return view;
+}
+
+static SOSViewRef SOSViewManangerCopyCompositeViewWithNames(SOSViewManagerRef vmgr, CFMutableDictionaryRef referencedViews, CFArrayRef viewNames, CFErrorRef *error) {
+ CFStringRef compositeName = CFStringCreateWithViewNames(viewNames);
+ SOSViewRef compositeView = (SOSViewRef)CFDictionaryGetValue(vmgr->views, compositeName);
+ if (compositeView) {
+ CFDictionarySetValue(referencedViews, compositeName, kCFBooleanTrue);
+ CFRetain(compositeView);
+ } else {
+ compositeView = SOSViewCreate(CFGetAllocator(vmgr), true, NULL, error);
+ if (compositeView) {
+ // Find the views for each name, and add the new view as a child to each one.
+ CFStringRef viewName;
+ CFArrayForEachC(viewNames, viewName) {
+ SOSViewRef parent = SOSViewManangerCopyViewWithName(vmgr, referencedViews, viewName, false, error);
+ if (!parent) {
+ CFReleaseNull(compositeView);
+ break;
+ }
+ SOSViewAddChild(parent, compositeView);
+ // Update the composite view's manifest by adding each parents manifest.
+ // TODO: Potentially move this out of the loop and create a single multi way manifest union operation
+ SOSManifestRef pmf = SOSViewCopyManifest(parent, error);
+ SOSViewUpdateManifest(compositeView, kSOSDataSourceSOSTransaction, NULL, pmf, error);
+ CFReleaseSafe(pmf);
+ }
+ CFDictionarySetValue(vmgr->views, viewName, compositeView);
+ }
+ }
+ CFReleaseSafe(compositeName);
+ return compositeView;
+}
+
+static bool SOSViewManangerAddChildWithInfo(SOSViewManagerRef vmgr, CFMutableDictionaryRef referencedViews, CFDictionaryRef childInfo, CFErrorRef *error) {
+ CFArrayRef viewNames = (CFArrayRef)CFDictionaryGetValue(childInfo, kSOSViewNamesChildInfoKey);
+// const void *context = (const void *)CFDictionaryGetValue(childInfo, kSOSContextChildInfoKey);
+// const void *func = (const void *)CFDictionaryGetValue(childInfo, kSOSFunctionChildInfoKey);
+
+ CFIndex count = CFArrayGetCount(viewNames);
+ if (count == 1) {
+ CFStringRef key = CFArrayGetValueAtIndex(viewNames, 0);
+ SOSViewRef view = SOSViewManangerCopyViewWithName(vmgr, referencedViews, key, true, error);
+ // TODO: Fix this...
+ //SOSViewAddClient(view, context, func);
+ if (view) count++; // TODO: REMOVE MOVE -- HERE ONLY FOR COMPILER WARNING
+ } else if (count > 1) {
+ SOSViewRef view = SOSViewManangerCopyCompositeViewWithNames(vmgr, referencedViews, viewNames, error);
+ // TODO: Fix this...
+ //SOSViewAddClient(view, context, func);
+ if (view) count++; // TODO: REMOVE MOVE -- HERE ONLY FOR COMPILER WARNING
+ }
+
+ return true;
+}
+
+struct SOSViewManagerContext {
+ SOSViewManagerRef vmgr;
+ CFDictionaryRef referencedViews;
+};
+
+static void SOSViewManagerUpdateView(const void *key, const void *value, void *context) {
+ struct SOSViewManagerContext *vmc = context;
+ CFBooleanRef isConcrete = CFDictionaryGetValue(vmc->referencedViews, key);
+ if (!isConcrete) {
+ CFDictionaryRemoveValue(vmc->vmgr->views, key);
+ } else if (CFBooleanGetValue(isConcrete) == 0) {
+ SOSViewRef view = (SOSViewRef)CFDictionaryGetValue(vmc->vmgr->views, key);
+ SOSViewSetConcrete(view, false);
+ }
+}
+
+bool SOSViewManagerSetChildren(SOSViewManagerRef vmgr, CFArrayRef children, CFErrorRef *error) {
+ bool ok = true;
+ CFMutableDictionaryRef referencedViews = CFDictionaryCreateMutableForCFTypes(kCFAllocatorDefault);
+ CFDictionaryRef childInfo;
+ CFArrayForEachC(children, childInfo) {
+ ok &= SOSViewManangerAddChildWithInfo(vmgr, referencedViews, childInfo, error);
+ }
+
+ // Potentially populate all views here.
+
+ // Cleanup, remove any views we no longer reference, and set any views which need not be concrete as such.
+ struct SOSViewManagerContext vmc = {
+ .vmgr = vmgr,
+ .referencedViews = referencedViews,
+ };
+ CFDictionaryApplyFunction(vmgr->views, SOSViewManagerUpdateView, &vmc);
+ CFRetainSafe(referencedViews);
+
+ return ok;
+}
+#endif
projects / apple / security.git / blobdiff