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Fix clang compilation (#1697)

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void* + integral type is not allowed on standard C++ and is a GNU
extension
This commit is contained in:
scorpion-26 2023-03-04 15:02:40 +01:00 committed by GitHub
parent c386c52cf9
commit f678789dfd
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 16 additions and 16 deletions
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30
src/plugins/HookSystem.cpp
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@ -57,7 +57,7 @@ size_t CFunctionHook::probeMinimumJumpSize(void* start, size_t min) {
while (size <= min) {
// find info about this instruction
size_t insLen = getInstructionLenAt(start + size);
size_t insLen = getInstructionLenAt((uint8_t*)start + size);
size += insLen;
}
@ -102,37 +102,37 @@ bool CFunctionHook::hook() {
// populate trampoline
memcpy(m_pTrampolineAddr, m_pSource, HOOKSIZE); // first, original func bytes
memcpy(m_pTrampolineAddr + HOOKSIZE, PUSH_RAX, sizeof(PUSH_RAX)); // then, pushq %rax
memcpy(m_pTrampolineAddr + HOOKSIZE + sizeof(PUSH_RAX), ABSOLUTE_JMP_ADDRESS, sizeof(ABSOLUTE_JMP_ADDRESS)); // then, jump to source
memcpy((uint8_t*)m_pTrampolineAddr + HOOKSIZE, PUSH_RAX, sizeof(PUSH_RAX)); // then, pushq %rax
memcpy((uint8_t*)m_pTrampolineAddr + HOOKSIZE + sizeof(PUSH_RAX), ABSOLUTE_JMP_ADDRESS, sizeof(ABSOLUTE_JMP_ADDRESS)); // then, jump to source
// fix trampoline %rip calls
for (size_t i = 0; i < m_vTrampolineRIPUses.size(); ++i) {
size_t callOffset = i * (sizeof(CALL_WITH_RAX) - 6 /* callq [rip + x] */) + m_vTrampolineRIPUses[i].first;
size_t realCallAddress = (uint64_t)m_pSource + callOffset + 6 + *((uint32_t*)(m_pSource + callOffset + 2));
size_t realCallAddress = (uint64_t)m_pSource + callOffset + 6 + *((uint32_t*)((uint8_t*)m_pSource + callOffset + 2));
memmove(m_pTrampolineAddr + callOffset + sizeof(CALL_WITH_RAX), m_pTrampolineAddr + callOffset + 6, TRAMPOLINE_SIZE - callOffset - 6);
memcpy(m_pTrampolineAddr + callOffset, CALL_WITH_RAX, sizeof(CALL_WITH_RAX));
memmove((uint8_t*)m_pTrampolineAddr + callOffset + sizeof(CALL_WITH_RAX), (uint8_t*)m_pTrampolineAddr + callOffset + 6, TRAMPOLINE_SIZE - callOffset - 6);
memcpy((uint8_t*)m_pTrampolineAddr + callOffset, CALL_WITH_RAX, sizeof(CALL_WITH_RAX));
*(uint64_t*)(m_pTrampolineAddr + callOffset + CALL_WITH_RAX_ADDRESS_OFFSET) = (uint64_t)realCallAddress;
*(uint64_t*)((uint8_t*)m_pTrampolineAddr + callOffset + CALL_WITH_RAX_ADDRESS_OFFSET) = (uint64_t)realCallAddress;
}
// fixup trampoline addr
*(uint64_t*)(m_pTrampolineAddr + TRAMPOLINE_SIZE - sizeof(ABSOLUTE_JMP_ADDRESS) + ABSOLUTE_JMP_ADDRESS_OFFSET) = (uint64_t)(m_pSource + sizeof(ABSOLUTE_JMP_ADDRESS));
*(uint64_t*)((uint8_t*)m_pTrampolineAddr + TRAMPOLINE_SIZE - sizeof(ABSOLUTE_JMP_ADDRESS) + ABSOLUTE_JMP_ADDRESS_OFFSET) = (uint64_t)((uint8_t*)m_pSource + sizeof(ABSOLUTE_JMP_ADDRESS));
// make jump to hk
mprotect(m_pSource - ((uint64_t)m_pSource) % sysconf(_SC_PAGE_SIZE), sysconf(_SC_PAGE_SIZE), PROT_READ | PROT_WRITE | PROT_EXEC);
mprotect((uint8_t*)m_pSource - ((uint64_t)m_pSource) % sysconf(_SC_PAGE_SIZE), sysconf(_SC_PAGE_SIZE), PROT_READ | PROT_WRITE | PROT_EXEC);
memcpy(m_pSource, ABSOLUTE_JMP_ADDRESS, sizeof(ABSOLUTE_JMP_ADDRESS));
// make popq %rax and NOP all remaining
memcpy(m_pSource + sizeof(ABSOLUTE_JMP_ADDRESS), POP_RAX, sizeof(POP_RAX));
memcpy((uint8_t*)m_pSource + sizeof(ABSOLUTE_JMP_ADDRESS), POP_RAX, sizeof(POP_RAX));
size_t currentOp = sizeof(ABSOLUTE_JMP_ADDRESS) + sizeof(POP_RAX);
memset(m_pSource + currentOp, NOP, HOOKSIZE - currentOp);
memset((uint8_t*)m_pSource + currentOp, NOP, HOOKSIZE - currentOp);
// fixup jump addr
*(uint64_t*)(m_pSource + ABSOLUTE_JMP_ADDRESS_OFFSET) = (uint64_t)(m_pDestination);
*(uint64_t*)((uint8_t*)m_pSource + ABSOLUTE_JMP_ADDRESS_OFFSET) = (uint64_t)(m_pDestination);
// revert mprot
mprotect(m_pSource - ((uint64_t)m_pSource) % sysconf(_SC_PAGE_SIZE), sysconf(_SC_PAGE_SIZE), PROT_READ | PROT_EXEC);
mprotect((uint8_t*)m_pSource - ((uint64_t)m_pSource) % sysconf(_SC_PAGE_SIZE), sysconf(_SC_PAGE_SIZE), PROT_READ | PROT_EXEC);
// set original addr to trampo addr
m_pOriginal = m_pTrampolineAddr;
@ -154,13 +154,13 @@ bool CFunctionHook::unhook() {
return false;
// allow write to src
mprotect(m_pSource - ((uint64_t)m_pSource) % sysconf(_SC_PAGE_SIZE), sysconf(_SC_PAGE_SIZE), PROT_READ | PROT_WRITE | PROT_EXEC);
mprotect((uint8_t*)m_pSource - ((uint64_t)m_pSource) % sysconf(_SC_PAGE_SIZE), sysconf(_SC_PAGE_SIZE), PROT_READ | PROT_WRITE | PROT_EXEC);
// write back original bytes
memcpy(m_pSource, m_pOriginalBytes, m_iHookLen);
// revert mprot
mprotect(m_pSource - ((uint64_t)m_pSource) % sysconf(_SC_PAGE_SIZE), sysconf(_SC_PAGE_SIZE), PROT_READ | PROT_EXEC);
mprotect((uint8_t*)m_pSource - ((uint64_t)m_pSource) % sysconf(_SC_PAGE_SIZE), sysconf(_SC_PAGE_SIZE), PROT_READ | PROT_EXEC);
// unmap
munmap(m_pTrampolineAddr, m_iTrampoLen);