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https://github.com/0O0o0oOoO00/Alas.git
synced 2026-05-15 01:19:25 +08:00
58 lines
3.1 KiB
C++
58 lines
3.1 KiB
C++
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#include "dobby/dobby_internal.h"
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#include "PlatformUnifiedInterface/ExecMemory/ClearCacheTool.h"
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#include <mach/mach_types.h>
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#include <vm/vm_kern.h>
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#include <mach/mach_vm.h>
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#include <ptrauth.h>
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#undef max
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#undef min
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#include <libkern/libkern.h>
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#define DobbySymbolResolverAuth(o_var, name) \
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do { \
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static void *func_ptr = nullptr; \
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if (func_ptr == nullptr) { \
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func_ptr = DobbySymbolResolver(nullptr, name); \
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if (func_ptr) { \
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func_ptr = ptrauth_strip((void *)func_ptr, ptrauth_key_asia); \
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func_ptr = ptrauth_sign_unauthenticated(func_ptr, ptrauth_key_asia, 0); \
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} \
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} \
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o_var = (typeof(o_var))func_ptr; \
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} while (0);
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#define KERN_RETURN_ERROR(kr, failure) \
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do { \
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if (kr != KERN_SUCCESS) { \
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ERROR_LOG("mach error: %d", kr); \
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return failure; \
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} \
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} while (0);
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PUBLIC int DobbyCodePatch(void *address, uint8_t *buffer, uint32_t buffer_size) {
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if (address == nullptr || buffer == nullptr || buffer_size == 0) {
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ERROR_LOG("invalid argument");
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return kMemoryOperationError;
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}
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kern_return_t kr;
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{
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paddr_t dst_paddr = pmap_kit_kvtophys(kernel_pmap, (vaddr_t)address);
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paddr_t src_paddr = pmap_kit_kvtophys(kernel_pmap, (vaddr_t)buffer);
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pmap_kit_bcopy_phys((addr_t)buffer, dst_paddr, buffer_size, cppvPsnk);
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DEBUG_LOG("bcopy_phys: src: %p, dst: %p", src_paddr, dst_paddr);
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pmap_kit_kva_to_pte(kernel_pmap, (vaddr_t)address);
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pmap_kit_set_perm(kernel_pmap, (vaddr_t)address, (vaddr_t)address + PAGE_SIZE, VM_PROT_READ | VM_PROT_EXECUTE);
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if (memcmp(address, buffer, buffer_size))
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return kMemoryOperationError;
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}
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return 0;
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}
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