1*bbb1b6f9SApple OSS Distributions /*
2*bbb1b6f9SApple OSS Distributions * Copyright (c) 2024 Apple Inc. All rights reserved.
3*bbb1b6f9SApple OSS Distributions *
4*bbb1b6f9SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*bbb1b6f9SApple OSS Distributions *
6*bbb1b6f9SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code
7*bbb1b6f9SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License
8*bbb1b6f9SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in
9*bbb1b6f9SApple OSS Distributions * compliance with the License. The rights granted to you under the License
10*bbb1b6f9SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of,
11*bbb1b6f9SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to
12*bbb1b6f9SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any
13*bbb1b6f9SApple OSS Distributions * terms of an Apple operating system software license agreement.
14*bbb1b6f9SApple OSS Distributions *
15*bbb1b6f9SApple OSS Distributions * Please obtain a copy of the License at
16*bbb1b6f9SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*bbb1b6f9SApple OSS Distributions *
18*bbb1b6f9SApple OSS Distributions * The Original Code and all software distributed under the License are
19*bbb1b6f9SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*bbb1b6f9SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*bbb1b6f9SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*bbb1b6f9SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*bbb1b6f9SApple OSS Distributions * Please see the License for the specific language governing rights and
24*bbb1b6f9SApple OSS Distributions * limitations under the License.
25*bbb1b6f9SApple OSS Distributions *
26*bbb1b6f9SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*bbb1b6f9SApple OSS Distributions */
28*bbb1b6f9SApple OSS Distributions
29*bbb1b6f9SApple OSS Distributions #include <IOKit/IOProviderPropertyMerger.h>
30*bbb1b6f9SApple OSS Distributions #include <IOKit/IOService.h>
31*bbb1b6f9SApple OSS Distributions
32*bbb1b6f9SApple OSS Distributions #define super IOService
33*bbb1b6f9SApple OSS Distributions OSDefineMetaClassAndStructors(IOProviderPropertyMerger, IOService);
34*bbb1b6f9SApple OSS Distributions
35*bbb1b6f9SApple OSS Distributions bool
init(OSDictionary * dictionary)36*bbb1b6f9SApple OSS Distributions IOProviderPropertyMerger::init(OSDictionary * dictionary)
37*bbb1b6f9SApple OSS Distributions {
38*bbb1b6f9SApple OSS Distributions OSDictionary *mergeProperties = OSDynamicCast(OSDictionary, dictionary->getObject(kIOProviderMergePropertiesKey));
39*bbb1b6f9SApple OSS Distributions OSDictionary *parentMergeProperties = OSDynamicCast(OSDictionary, dictionary->getObject(kIOProviderParentMergePropertiesKey));
40*bbb1b6f9SApple OSS Distributions
41*bbb1b6f9SApple OSS Distributions // remove security-sensitive properties from the dictionary used to merge properties to provider
42*bbb1b6f9SApple OSS Distributions if (mergeProperties) {
43*bbb1b6f9SApple OSS Distributions mergeProperties->removeObject(gIOServiceDEXTEntitlementsKey);
44*bbb1b6f9SApple OSS Distributions }
45*bbb1b6f9SApple OSS Distributions if (parentMergeProperties) {
46*bbb1b6f9SApple OSS Distributions parentMergeProperties->removeObject(gIOServiceDEXTEntitlementsKey);
47*bbb1b6f9SApple OSS Distributions }
48*bbb1b6f9SApple OSS Distributions
49*bbb1b6f9SApple OSS Distributions return super::init(dictionary);
50*bbb1b6f9SApple OSS Distributions }
51*bbb1b6f9SApple OSS Distributions
52*bbb1b6f9SApple OSS Distributions bool
setProperty(const OSSymbol * aKey,OSObject * anObject)53*bbb1b6f9SApple OSS Distributions IOProviderPropertyMerger::setProperty(const OSSymbol * aKey, OSObject * anObject)
54*bbb1b6f9SApple OSS Distributions {
55*bbb1b6f9SApple OSS Distributions // Disallow modifying security-sensitive properties
56*bbb1b6f9SApple OSS Distributions if (aKey->isEqualTo(kIOProviderMergePropertiesKey) || aKey->isEqualTo(kIOProviderParentMergePropertiesKey)) {
57*bbb1b6f9SApple OSS Distributions return false;
58*bbb1b6f9SApple OSS Distributions }
59*bbb1b6f9SApple OSS Distributions return super::setProperty(aKey, anObject);
60*bbb1b6f9SApple OSS Distributions }
61*bbb1b6f9SApple OSS Distributions
62*bbb1b6f9SApple OSS Distributions void
setPropertyTable(OSDictionary * dict __unused)63*bbb1b6f9SApple OSS Distributions IOProviderPropertyMerger::setPropertyTable(OSDictionary * dict __unused)
64*bbb1b6f9SApple OSS Distributions {
65*bbb1b6f9SApple OSS Distributions // Disallow changing the entire property table since that can change security-sensitive properties
66*bbb1b6f9SApple OSS Distributions }
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