]> git.saurik.com Git - apple/security.git/blobdiff - OSX/sec/ProjectHeaders/Security/SecureObjectSync/SOSViews.c
Security-57336.10.29.tar.gz
[apple/security.git] / OSX / sec / ProjectHeaders / Security / SecureObjectSync / SOSViews.c
diff --git a/OSX/sec/ProjectHeaders/Security/SecureObjectSync/SOSViews.c b/OSX/sec/ProjectHeaders/Security/SecureObjectSync/SOSViews.c
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@@ -1,502 +0,0 @@
-/*
- * 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@
- */
-
-/*
- * SOSViews.c -  Implementation of views
- */
-
-#include <AssertMacros.h>
-#include <TargetConditionals.h>
-
-#include "SOSViews.h"
-#include <utilities/SecCFWrappers.h>
-#include <utilities/SecCFRelease.h>
-#include <utilities/SecXPCError.h>
-
-#include <utilities/SecCFError.h>
-#include <utilities/der_set.h>
-#include <Security/SecureObjectSync/SOSInternal.h>
-
-#include <Security/SecureObjectSync/SOSPeerInfo.h>
-#include <Security/SecureObjectSync/SOSPeerInfoV2.h>
-#include <Security/SecureObjectSync/SOSPeerInfoPriv.h>
-#include <Security/SecureObjectSync/SOSCloudCircle.h>
-#include <Security/SecureObjectSync/SOSAccount.h>
-#include <Security/SecureObjectSync/SOSAccountPriv.h>
-
-CFStringRef viewMemError                = CFSTR("Failed to get memory for views in PeerInfo");
-CFStringRef viewUnknownError            = CFSTR("Unknown view(%@) (ViewResultCode=%d)");
-CFStringRef viewInvalidError            = CFSTR("Peer is invalid for this view(%@) (ViewResultCode=%d)");
-
-// Internal Views:
-const CFStringRef kSOSViewKeychainV0_tomb           = CFSTR("KeychainV0-tomb"); // iCloud Keychain backup for v0 peers (no tombstones)
-const CFStringRef kSOSViewBackupBagV0_tomb          = CFSTR("BackupBagV0-tomb");     // iCloud Keychain backup bag for v0 peers (no tombstones)
-const CFStringRef kSOSViewWiFi_tomb                 = CFSTR("WiFi-tomb");
-const CFStringRef kSOSViewAutofillPasswords_tomb    = CFSTR("Passwords-tomb");
-const CFStringRef kSOSViewSafariCreditCards_tomb    = CFSTR("CreditCards-tomb");
-const CFStringRef kSOSViewiCloudIdentity_tomb       = CFSTR("iCloudIdentity-tomb");
-const CFStringRef kSOSViewOtherSyncable_tomb        = CFSTR("OtherSyncable-tomb");
-
-// Views
-const CFStringRef kSOSViewKeychainV0            = CFSTR("KeychainV0");      // iCloud Keychain syncing for v0 peers
-
-const CFStringRef kSOSViewWiFi                  = CFSTR("WiFi");
-const CFStringRef kSOSViewAutofillPasswords     = CFSTR("Passwords");
-const CFStringRef kSOSViewSafariCreditCards     = CFSTR("CreditCards");
-const CFStringRef kSOSViewiCloudIdentity        = CFSTR("iCloudIdentity");
-const CFStringRef kSOSViewBackupBagV0           = CFSTR("BackupBagV0");     // iCloud Keychain backup bag for v0 peers (single item)
-const CFStringRef kSOSViewOtherSyncable         = CFSTR("OtherSyncable");
-
-// PCS (Protected Cloud Storage) Views
-const CFStringRef kSOSViewPCSMasterKey          = CFSTR("PCS-MasterKey");
-const CFStringRef kSOSViewPCSiCloudDrive        = CFSTR("PCS-iCloudDrive"); // Bladerunner
-const CFStringRef kSOSViewPCSPhotos             = CFSTR("PCS-Photos");      // Hyperion
-const CFStringRef kSOSViewPCSCloudKit           = CFSTR("PCS-CloudKit");    // Liverpool
-const CFStringRef kSOSViewPCSEscrow             = CFSTR("PCS-Escrow");
-const CFStringRef kSOSViewPCSFDE                = CFSTR("PCS-FDE");
-const CFStringRef kSOSViewPCSMailDrop           = CFSTR("PCS-Maildrop");    // PianoMover
-const CFStringRef kSOSViewPCSiCloudBackup       = CFSTR("PCS-Backup");
-const CFStringRef kSOSViewPCSNotes              = CFSTR("PCS-Notes");
-const CFStringRef kSOSViewPCSiMessage           = CFSTR("PCS-iMessage");
-const CFStringRef kSOSViewPCSFeldspar           = CFSTR("PCS-Feldspar");
-
-const CFStringRef kSOSViewAppleTV               = CFSTR("AppleTV");
-const CFStringRef kSOSViewHomeKit               = CFSTR("HomeKit");
-
-// View Hints
-// Note that by definition, there cannot be a V0 view hint
-// These will be deprecated for new constants found in SecItemPriv.h
-const CFStringRef kSOSViewHintPCSMasterKey      = CFSTR("PCS-MasterKey");
-const CFStringRef kSOSViewHintPCSiCloudDrive    = CFSTR("PCS-iCloudDrive");
-const CFStringRef kSOSViewHintPCSPhotos         = CFSTR("PCS-Photos");
-const CFStringRef kSOSViewHintPCSCloudKit       = CFSTR("PCS-CloudKit");
-const CFStringRef kSOSViewHintPCSEscrow         = CFSTR("PCS-Escrow");
-const CFStringRef kSOSViewHintPCSFDE            = CFSTR("PCS-FDE");
-const CFStringRef kSOSViewHintPCSMailDrop       = CFSTR("PCS-Maildrop");
-const CFStringRef kSOSViewHintPCSiCloudBackup   = CFSTR("PCS-Backup");
-const CFStringRef kSOSViewHintPCSNotes          = CFSTR("PCS-Notes");
-const CFStringRef kSOSViewHintPCSiMessage       = CFSTR("PCS-iMessage");
-const CFStringRef kSOSViewHintPCSFeldspar       = CFSTR("PCS-Feldspar");
-
-const CFStringRef kSOSViewHintAppleTV           = CFSTR("AppleTV");
-const CFStringRef kSOSViewHintHomeKit           = CFSTR("HomeKit");
-
-CFGiblisGetSingleton(CFSetRef, SOSViewsGetV0ViewSet, defaultViewSet, ^{
-    // Since peer->views must never be NULL, fill in with a default
-    const void *values[] = { kSOSViewKeychainV0 };
-    *defaultViewSet = CFSetCreate(kCFAllocatorDefault, values, array_size(values), &kCFTypeSetCallBacks);
-});
-
-CFGiblisGetSingleton(CFSetRef, SOSViewsGetV0SubviewSet, subViewSet, (^{
-    // Since peer->views must never be NULL, fill in with a default
-    const void *values[] = { kSOSViewWiFi, kSOSViewAutofillPasswords, kSOSViewSafariCreditCards,
-                             kSOSViewiCloudIdentity, kSOSViewBackupBagV0, kSOSViewOtherSyncable };
-    *subViewSet = CFSetCreate(kCFAllocatorDefault, values, array_size(values), &kCFTypeSetCallBacks);
-}));
-
-CFGiblisGetSingleton(CFSetRef, SOSViewsGetV0BackupViewSet, defaultViewSet, ^{
-    const void *values[] = { kSOSViewKeychainV0_tomb };
-    *defaultViewSet = CFSetCreate(kCFAllocatorDefault, values, array_size(values), &kCFTypeSetCallBacks);
-});
-
-CFGiblisGetSingleton(CFSetRef, SOSViewsGetV0BackupBagViewSet, defaultViewSet, ^{
-    const void *values[] = { kSOSViewBackupBagV0_tomb };
-    *defaultViewSet = CFSetCreate(kCFAllocatorDefault, values, array_size(values), &kCFTypeSetCallBacks);
-});
-
-bool SOSViewsIsV0Subview(CFStringRef viewName) {
-    return CFSetContainsValue(SOSViewsGetV0BackupViewSet(), viewName);
-}
-
-CFSetRef sTestViewSet = NULL;
-void SOSViewsSetTestViewsSet(CFSetRef testViewNames) {
-    CFRetainAssign(sTestViewSet, testViewNames);
-}
-
-CFSetRef SOSViewsGetAllCurrent(void) {
-    static dispatch_once_t dot;
-    static CFMutableSetRef allViews = NULL;
-    dispatch_once(&dot, ^{
-        allViews = CFSetCreateMutableForCFTypes(kCFAllocatorDefault);
-        CFSetAddValue(allViews, kSOSViewKeychainV0);
-        CFSetAddValue(allViews, kSOSViewPCSMasterKey);
-        CFSetAddValue(allViews, kSOSViewPCSiCloudDrive);
-        CFSetAddValue(allViews, kSOSViewPCSPhotos);
-        CFSetAddValue(allViews, kSOSViewPCSCloudKit);
-        CFSetAddValue(allViews, kSOSViewPCSEscrow);
-        CFSetAddValue(allViews, kSOSViewPCSFDE);
-        CFSetAddValue(allViews, kSOSViewPCSMailDrop);
-        CFSetAddValue(allViews, kSOSViewPCSiCloudBackup);
-        CFSetAddValue(allViews, kSOSViewPCSNotes);
-        CFSetAddValue(allViews, kSOSViewPCSiMessage);
-        CFSetAddValue(allViews, kSOSViewPCSFeldspar);
-        CFSetAddValue(allViews, kSOSViewAppleTV);
-        CFSetAddValue(allViews, kSOSViewHomeKit);
-        CFSetAddValue(allViews, kSOSViewWiFi);
-        CFSetAddValue(allViews, kSOSViewAutofillPasswords);
-        CFSetAddValue(allViews, kSOSViewSafariCreditCards);
-        CFSetAddValue(allViews, kSOSViewiCloudIdentity);
-        CFSetAddValue(allViews, kSOSViewBackupBagV0);
-        CFSetAddValue(allViews, kSOSViewOtherSyncable);
-    });
-    return sTestViewSet ? sTestViewSet : allViews;
-}
-
-static CFMutableSetRef CFSetCreateMutableCopyForSOSViews(CFAllocatorRef allocator, CFSetRef original) {
-    if(!original) return NULL;
-    return CFSetCreateMutableCopy(allocator, 0, original);
-}
-
-CFMutableSetRef SOSViewsCreateDefault(bool includeLegacy, CFErrorRef *error) {
-    CFMutableSetRef result = CFSetCreateMutableCopyForSOSViews(NULL, SOSViewsGetAllCurrent());
-
-    // We don't by default particiate in V0, actually we don't want
-    // to let folks enable it.
-    CFSetRemoveValue(result, kSOSViewKeychainV0);
-
-    if (!includeLegacy) {
-        // We don't by default participate in fractures of iCloudKeychain
-        CFSetRemoveValue(result, kSOSViewWiFi);
-        CFSetRemoveValue(result, kSOSViewAutofillPasswords);
-        CFSetRemoveValue(result, kSOSViewSafariCreditCards);
-        CFSetRemoveValue(result, kSOSViewOtherSyncable);
-    }
-
-    return result;
-}
-
-// Eventually this will want to know the gestalt or security properties...
-void SOSViewsForEachDefaultEnabledViewName(void (^operation)(CFStringRef viewName)) {
-    CFMutableSetRef defaultViews = SOSViewsCreateDefault(false, NULL);
-    
-    CFSetForEach(defaultViews, ^(const void *value) {
-        CFStringRef name = asString(value, NULL);
-
-        if (name) {
-            operation(name);
-        }
-    });
-    
-    CFReleaseNull(defaultViews);
-}
-
-static bool SOSViewsIsKnownView(CFStringRef viewname) {
-    CFSetRef allViews = SOSViewsGetAllCurrent();
-    if(CFSetContainsValue(allViews, viewname)) return true;
-    secnotice("views","Not a known view");
-    return false;
-}
-
-bool SOSPeerInfoIsEnabledView(SOSPeerInfoRef pi, CFStringRef viewName) {
-    if (pi->version < kSOSPeerV2BaseVersion) {
-        return CFSetContainsValue(SOSViewsGetV0ViewSet(), viewName);
-    } else {
-        return SOSPeerInfoV2DictionaryHasSetContaining(pi, sViewsKey, viewName);
-    }
-}
-
-void SOSPeerInfoWithEnabledViewSet(SOSPeerInfoRef pi, void (^operation)(CFSetRef enabled)) {
-    if (pi->version < kSOSPeerV2BaseVersion) {
-        operation(SOSViewsGetV0ViewSet());
-    } else {
-        SOSPeerInfoV2DictionaryWithSet(pi, sViewsKey, operation);
-    }
-}
-
-CFMutableSetRef SOSPeerInfoCopyEnabledViews(SOSPeerInfoRef pi) {
-    if (pi->version < kSOSPeerV2BaseVersion) {
-        return CFSetCreateMutableCopy(kCFAllocatorDefault, CFSetGetCount(SOSViewsGetV0ViewSet()), SOSViewsGetV0ViewSet());
-    } else {
-        CFMutableSetRef views = SOSPeerInfoV2DictionaryCopySet(pi, sViewsKey);
-        if (!views) {
-            // This is unexpected: log and return an empty set to prevent <rdar://problem/21938868>
-            secerror("%@ v2 peer has no views", SOSPeerInfoGetPeerID(pi));
-            views = CFSetCreateMutableForCFTypes(kCFAllocatorDefault);
-        }
-        return views;
-    }
-}
-
-CFSetRef SOSPeerInfoGetPermittedViews(SOSPeerInfoRef pi) {
-    return SOSViewsGetAllCurrent();
-}
-
-static void SOSPeerInfoSetViews(SOSPeerInfoRef pi, CFSetRef newviews) {
-       if(!newviews) {
-               secnotice("views","Asked to swap to NULL views");
-               return;
-       }
-    SOSPeerInfoV2DictionarySetValue(pi, sViewsKey, newviews);
-}
-
-static bool SOSPeerInfoViewIsValid(SOSPeerInfoRef pi, CFStringRef viewname) {
-    return true;
-}
-
-static bool viewErrorReport(CFIndex errorCode, CFErrorRef *error, CFStringRef format, CFStringRef viewname, int retval) {
-       return SOSCreateErrorWithFormat(errorCode, NULL, error, NULL, format, viewname, retval);
-}
-
-SOSViewResultCode SOSViewsEnable(SOSPeerInfoRef pi, CFStringRef viewname, CFErrorRef *error) {
-       SOSViewResultCode retval = kSOSCCGeneralViewError;
-    
-    CFMutableSetRef newviews = SOSPeerInfoCopyEnabledViews(pi);
-    require_action_quiet(newviews, fail, 
-               SOSCreateError(kSOSErrorAllocationFailure, viewMemError, NULL, error));
-    require_action_quiet(SOSViewsIsKnownView(viewname), fail,
-               viewErrorReport(kSOSErrorNameMismatch, error, viewUnknownError, viewname, retval = kSOSCCNoSuchView));
-    require_action_quiet(SOSPeerInfoViewIsValid(pi, viewname), fail,
-               viewErrorReport(kSOSErrorNameMismatch, error, viewInvalidError, viewname, retval = kSOSCCViewNotQualified));
-    CFSetAddValue(newviews, viewname);
-       SOSPeerInfoSetViews(pi, newviews);
-    CFReleaseSafe(newviews);
-    return kSOSCCViewMember;
-
-fail:
-       CFReleaseNull(newviews);
-       secnotice("views","Failed to enable view(%@): %@", viewname, *error);
-       return retval;
-}
-
-bool SOSViewSetEnable(SOSPeerInfoRef pi, CFSetRef viewSet) {
-    __block bool retval = true;
-    __block bool addedView = false;
-    CFMutableSetRef newviews = SOSPeerInfoCopyEnabledViews(pi);
-    require_action_quiet(newviews, errOut, secnotice("views", "failed to copy enabled views"));
-    
-    CFSetForEach(viewSet, ^(const void *value) {
-        CFStringRef viewName = (CFStringRef) value;
-        if(SOSViewsIsKnownView(viewName) && SOSPeerInfoViewIsValid(pi, viewName) && !CFSetContainsValue(newviews, viewName)) {
-            addedView = true;
-            CFSetAddValue(newviews, viewName);
-        } else {
-            retval = false;
-            secnotice("views", "couldn't add view %@", viewName);
-        }
-    });
-    require_quiet(retval, errOut);
-
-    if (addedView) {
-        SOSPeerInfoSetViews(pi, newviews);
-    }
-    
-errOut:
-    CFReleaseNull(newviews);
-    return retval;
-}
-
-
-SOSViewResultCode SOSViewsDisable(SOSPeerInfoRef pi, CFStringRef viewname, CFErrorRef *error) {
-       SOSViewResultCode retval = kSOSCCGeneralViewError;
-    CFMutableSetRef newviews = SOSPeerInfoCopyEnabledViews(pi);
-    require_action_quiet(newviews, fail, 
-               SOSCreateError(kSOSErrorAllocationFailure, viewMemError, NULL, error));
-    require_action_quiet(SOSViewsIsKnownView(viewname), fail,
-               viewErrorReport(kSOSErrorNameMismatch, error, viewUnknownError, viewname, retval = kSOSCCNoSuchView));
-
-    CFSetRemoveValue(newviews, viewname);
-       SOSPeerInfoSetViews(pi, newviews);
-    CFReleaseSafe(newviews);
-    return kSOSCCViewNotMember;
-
-fail:
-       CFReleaseNull(newviews);
-       secnotice("views","Failed to disable view(%@): %@", viewname, *error);
-       return retval;
-}
-
-
-bool SOSViewSetDisable(SOSPeerInfoRef pi, CFSetRef viewSet) {
-    __block bool retval = true;
-    __block bool removed = false;
-    CFMutableSetRef newviews = SOSPeerInfoCopyEnabledViews(pi);
-    require_action_quiet(newviews, errOut, secnotice("views", "failed to copy enabled views"));
-    
-    CFSetForEach(viewSet, ^(const void *value) {
-        CFStringRef viewName = (CFStringRef) value;
-        if(SOSViewsIsKnownView(viewName) && CFSetContainsValue(newviews, viewName)) {
-            removed = true;
-            CFSetRemoveValue(newviews, viewName);
-        } else {
-            retval = false;
-            secnotice("views", "couldn't delete view %@", viewName);
-        }
-    });
-
-    require_quiet(retval, errOut);
-
-    if(removed) {
-        SOSPeerInfoSetViews(pi, newviews);
-    }
-    
-errOut:
-    CFReleaseNull(newviews);
-    return retval;
-}
-
-
-SOSViewResultCode SOSViewsQuery(SOSPeerInfoRef pi, CFStringRef viewname, CFErrorRef *error) {
-       SOSViewResultCode retval = kSOSCCNoSuchView;
-    CFSetRef views = NULL;
-    secnotice("views", "Querying %@", viewname);
-    require_action_quiet(SOSViewsIsKnownView(viewname), fail,
-               SOSCreateError(kSOSErrorNameMismatch, viewUnknownError, NULL, error));
-    views = SOSPeerInfoCopyEnabledViews(pi);
-    if(!views){
-        retval = kSOSCCViewNotMember;
-        CFReleaseNull(views);
-        return retval;
-    }
-    retval = (CFSetContainsValue(views, viewname)) ? kSOSCCViewMember: kSOSCCViewNotMember;
-    CFReleaseNull(views);
-    return retval;
-    
-fail:
-       secnotice("views","Failed to query view(%@): %@", viewname, *error);
-    CFReleaseNull(views);
-    return retval;
-}
-
-static CFArrayRef SOSCreateActiveViewIntersectionArrayForPeerInfos(SOSPeerInfoRef pi1, SOSPeerInfoRef pi2) {
-    CFMutableArrayRef  retval = NULL;
-    CFSetRef views1 = SOSPeerInfoCopyEnabledViews(pi1);
-    CFSetRef views2 = SOSPeerInfoCopyEnabledViews(pi2);
-    size_t count = CFSetGetCount(views1);
-    if(count == 0){
-        CFReleaseNull(views1);
-        CFReleaseNull(views2);
-        return NULL;
-    }
-    CFStringRef pi1views[count];
-    
-    retval = CFArrayCreateMutable(NULL, 0, &kCFTypeArrayCallBacks);
-    CFSetGetValues(views1, (const void **) &pi1views);
-    for(size_t i = 0; i < count; i++) {
-        if(CFSetContainsValue(views2, pi1views[i])) {
-            CFArrayAppendValue(retval, pi1views[i]);
-        }
-    }
-    CFReleaseNull(views1);
-    CFReleaseNull(views2);
-
-    return retval;
-}
-
-CFArrayRef SOSCreateActiveViewIntersectionArrayForPeerID(SOSAccountRef account, CFStringRef peerID) {
-    CFArrayRef  retval = NULL;
-    SOSPeerInfoRef myPI = SOSAccountGetMyPeerInfo(account);
-    SOSPeerInfoRef theirPI = SOSAccountCopyPeerWithID(account, peerID, NULL);
-    require_action_quiet(myPI, errOut, retval = NULL);
-    require_action_quiet(theirPI, errOut, retval = NULL);
-    
-    retval = SOSCreateActiveViewIntersectionArrayForPeerInfos(myPI, theirPI);
-    
-errOut:
-    CFReleaseNull(theirPI);
-    return retval;
-}
-
-// This needs to create a dictionary of sets of intersected views for an account
-CFDictionaryRef SOSViewsCreateActiveViewMatrixDictionary(SOSAccountRef account, SOSCircleRef circle, CFErrorRef *error) {
-    CFMutableDictionaryRef retval = CFDictionaryCreateMutable(NULL, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
-    SOSPeerInfoRef myPI = SOSAccountGetMyPeerInfo(account);
-    
-    // For now, all views require that a valid member peer is in the circle and active/valid
-    CFMutableSetRef peers = SOSCircleCopyPeers(circle, kCFAllocatorDefault);
-
-    require_action_quiet(retval, errOut, SOSCreateError(kSOSErrorAllocationFailure, CFSTR("Could not allocate ViewMatrix"), NULL, error));
-    require_action_quiet(myPI, errOut, SOSCreateError(kSOSErrorPeerNotFound, CFSTR("Could not find our PeerInfo"), NULL, error));
-    require(peers, errOut);
-
-    CFSetRef myViews = SOSPeerInfoCopyEnabledViews(myPI);
-
-    if (myViews)
-        CFSetForEach(myViews, ^(const void *value) {
-            CFStringRef viewname = (CFStringRef) value;
-            CFMutableSetRef viewset = CFSetCreateMutable(NULL, 0, &kCFTypeSetCallBacks);
-            CFSetForEach(peers, ^(const void *peervalue) {
-                SOSPeerInfoRef pi = (SOSPeerInfoRef) peervalue;
-                CFSetRef piViews = SOSPeerInfoCopyEnabledViews(pi);
-
-                if(piViews && CFSetContainsValue(piViews, viewname)) {
-                    CFStringRef peerID = SOSPeerInfoGetPeerID(pi);
-                    CFSetAddValue(viewset, peerID);
-                }
-                CFReleaseNull(piViews);
-
-            });
-            CFDictionaryAddValue(retval, viewname, viewset);
-        });
-    
-    if(CFDictionaryGetCount(retval) == 0) goto errOut;  // Not really an error - just no intersection of views with anyone
-    CFReleaseNull(peers);
-    CFReleaseNull(myViews);
-    return retval;
-    
-errOut:
-    CFReleaseNull(retval);
-    CFReleaseNull(peers);
-    return NULL;
-}
-
-
-
-
-
-/* Need XPC way to carry CFSets of views */
-
-
-CFSetRef CreateCFSetRefFromXPCObject(xpc_object_t xpcSetDER, CFErrorRef* error) {
-    CFSetRef retval = NULL;
-    require_action_quiet(xpcSetDER, errOut, SecCFCreateErrorWithFormat(kSecXPCErrorUnexpectedNull, sSecXPCErrorDomain, NULL, error, NULL, CFSTR("Unexpected Null Set to decode")));
-    
-    require_action_quiet(xpc_get_type(xpcSetDER) == XPC_TYPE_DATA, errOut, SecCFCreateErrorWithFormat(kSecXPCErrorUnexpectedType, sSecXPCErrorDomain, NULL, error, NULL, CFSTR("xpcSetDER not data, got %@"), xpcSetDER));
-    
-    const uint8_t* der = xpc_data_get_bytes_ptr(xpcSetDER);
-    const uint8_t* der_end = der + xpc_data_get_length(xpcSetDER);
-    der = der_decode_set(kCFAllocatorDefault, kCFPropertyListMutableContainersAndLeaves, &retval, error, der, der_end);
-    if (der != der_end) {
-        SecError(errSecDecode, error, CFSTR("trailing garbage at end of SecAccessControl data"));
-        goto errOut;
-    }
-    return retval;
-errOut:
-    CFReleaseNull(retval);
-    return NULL;
-}
-
-xpc_object_t CreateXPCObjectWithCFSetRef(CFSetRef setref, CFErrorRef *error) {
-    xpc_object_t result = NULL;
-    size_t data_size = 0;
-    uint8_t *data = NULL;
-    require_action_quiet(setref, errOut, SecCFCreateErrorWithFormat(kSecXPCErrorUnexpectedNull, sSecXPCErrorDomain, NULL, error, NULL, CFSTR("Unexpected Null Set to encode")));
-    require_quiet((data_size = der_sizeof_set(setref, error)) != 0, errOut);
-    require_quiet((data = (uint8_t *)malloc(data_size)) != NULL, errOut);
-    
-    der_encode_set(setref, error, data, data + data_size);
-    result = xpc_data_create(data, data_size);
-    free(data);
-errOut:
-    return result;
-}
-