60 lines
2.3 KiB
C
60 lines
2.3 KiB
C
//
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// Copyright © 2021 osy. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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#include <TargetConditionals.h>
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#if !TARGET_OS_SIMULATOR
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#include <IOKit/IOKitLib.h>
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#include <unistd.h>
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extern int proc_pidinfo(int pid, int flavor, uint64_t arg, void *buffer, int buffersize);
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extern kern_return_t _IOServiceSetAuthorizationID(io_service_t service, uint64_t authorizationID);
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/* bsd/sys/proc_info.h */
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struct proc_uniqidentifierinfo {
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uint8_t p_uuid[16]; /* UUID of the main executable */
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uint64_t p_uniqueid; /* 64 bit unique identifier for process */
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uint64_t p_puniqueid; /* unique identifier for process's parent */
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uint64_t p_reserve2; /* reserved for future use */
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uint64_t p_reserve3; /* reserved for future use */
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uint64_t p_reserve4; /* reserved for future use */
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};
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#define PROC_PIDUNIQIDENTIFIERINFO 17
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/**
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* On iOS, IOServiceAuthorizeAgent (XPC) is not defined, so we hook the call and set the authorization ID directly.
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* This requires the `com.apple.private.iokit.IOServiceSetAuthorizationID` entitlement.
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*/
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static kern_return_t IOServiceAuthorizeReplacement(io_service_t service, uint32_t options) {
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kern_return_t status;
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pid_t processID;
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struct proc_uniqidentifierinfo authorizationID = { 0 };
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processID = getpid();
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proc_pidinfo(processID, PROC_PIDUNIQIDENTIFIERINFO, 0, &authorizationID, sizeof(authorizationID));
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status = _IOServiceSetAuthorizationID(service, authorizationID.p_uniqueid);
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return status;
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}
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__attribute__ ((used, section ("__DATA,__interpose")))
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static struct {
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void *replacement, *original;
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} replace_IOServiceAuthorize = { IOServiceAuthorizeReplacement, IOServiceAuthorize };
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#endif
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