1*a1e26a70SApple OSS Distributions /*
2*a1e26a70SApple OSS Distributions * Copyright (c) 2024 Apple Inc. All rights reserved.
3*a1e26a70SApple OSS Distributions *
4*a1e26a70SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*a1e26a70SApple OSS Distributions *
6*a1e26a70SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code
7*a1e26a70SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License
8*a1e26a70SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in
9*a1e26a70SApple OSS Distributions * compliance with the License. The rights granted to you under the License
10*a1e26a70SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of,
11*a1e26a70SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to
12*a1e26a70SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any
13*a1e26a70SApple OSS Distributions * terms of an Apple operating system software license agreement.
14*a1e26a70SApple OSS Distributions *
15*a1e26a70SApple OSS Distributions * Please obtain a copy of the License at
16*a1e26a70SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*a1e26a70SApple OSS Distributions *
18*a1e26a70SApple OSS Distributions * The Original Code and all software distributed under the License are
19*a1e26a70SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*a1e26a70SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*a1e26a70SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*a1e26a70SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*a1e26a70SApple OSS Distributions * Please see the License for the specific language governing rights and
24*a1e26a70SApple OSS Distributions * limitations under the License.
25*a1e26a70SApple OSS Distributions *
26*a1e26a70SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*a1e26a70SApple OSS Distributions */
28*a1e26a70SApple OSS Distributions
29*a1e26a70SApple OSS Distributions #include <IOKit/IOProviderPropertyMerger.h>
30*a1e26a70SApple OSS Distributions #include <IOKit/IOService.h>
31*a1e26a70SApple OSS Distributions
32*a1e26a70SApple OSS Distributions #define super IOService
33*a1e26a70SApple OSS Distributions OSDefineMetaClassAndStructors(IOProviderPropertyMerger, IOService);
34*a1e26a70SApple OSS Distributions
35*a1e26a70SApple OSS Distributions bool
init(OSDictionary * dictionary)36*a1e26a70SApple OSS Distributions IOProviderPropertyMerger::init(OSDictionary * dictionary)
37*a1e26a70SApple OSS Distributions {
38*a1e26a70SApple OSS Distributions OSDictionary *mergeProperties = OSDynamicCast(OSDictionary, dictionary->getObject(kIOProviderMergePropertiesKey));
39*a1e26a70SApple OSS Distributions OSDictionary *parentMergeProperties = OSDynamicCast(OSDictionary, dictionary->getObject(kIOProviderParentMergePropertiesKey));
40*a1e26a70SApple OSS Distributions
41*a1e26a70SApple OSS Distributions // remove security-sensitive properties from the dictionary used to merge properties to provider
42*a1e26a70SApple OSS Distributions if (mergeProperties) {
43*a1e26a70SApple OSS Distributions mergeProperties->removeObject(gIOServiceDEXTEntitlementsKey);
44*a1e26a70SApple OSS Distributions }
45*a1e26a70SApple OSS Distributions if (parentMergeProperties) {
46*a1e26a70SApple OSS Distributions parentMergeProperties->removeObject(gIOServiceDEXTEntitlementsKey);
47*a1e26a70SApple OSS Distributions }
48*a1e26a70SApple OSS Distributions
49*a1e26a70SApple OSS Distributions return super::init(dictionary);
50*a1e26a70SApple OSS Distributions }
51*a1e26a70SApple OSS Distributions
52*a1e26a70SApple OSS Distributions bool
setProperty(const OSSymbol * aKey,OSObject * anObject)53*a1e26a70SApple OSS Distributions IOProviderPropertyMerger::setProperty(const OSSymbol * aKey, OSObject * anObject)
54*a1e26a70SApple OSS Distributions {
55*a1e26a70SApple OSS Distributions // Disallow modifying security-sensitive properties
56*a1e26a70SApple OSS Distributions if (aKey->isEqualTo(kIOProviderMergePropertiesKey) || aKey->isEqualTo(kIOProviderParentMergePropertiesKey)) {
57*a1e26a70SApple OSS Distributions return false;
58*a1e26a70SApple OSS Distributions }
59*a1e26a70SApple OSS Distributions return super::setProperty(aKey, anObject);
60*a1e26a70SApple OSS Distributions }
61*a1e26a70SApple OSS Distributions
62*a1e26a70SApple OSS Distributions void
setPropertyTable(OSDictionary * dict __unused)63*a1e26a70SApple OSS Distributions IOProviderPropertyMerger::setPropertyTable(OSDictionary * dict __unused)
64*a1e26a70SApple OSS Distributions {
65*a1e26a70SApple OSS Distributions // Disallow changing the entire property table since that can change security-sensitive properties
66*a1e26a70SApple OSS Distributions }
67