hyprwm/Hyprland
1
0
Fork 0
mirror of https://github.com/hyprwm/Hyprland synced 2024-12-23 04:49:48 +01:00
Code Issues Projects Releases Packages Wiki Activity

format: fix hooksystem

Browse source
This commit is contained in:
vaxerski 2023-06-16 18:45:11 +02:00
parent 1d902a4621
commit 5ac625d7bd
1 changed files with 4 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
src/plugins/HookSystem.cpp
View file

@ -14,9 +14,8 @@ CFunctionHook::CFunctionHook(HANDLE owner, void* source, void* destination) {
} }
CFunctionHook::~CFunctionHook() { CFunctionHook::~CFunctionHook() {
if (m_bActive) { if (m_bActive)
unhook(); unhook();
}
} }
size_t CFunctionHook::getInstructionLenAt(void* start) { size_t CFunctionHook::getInstructionLenAt(void* start) {
@ -101,7 +100,7 @@ bool CFunctionHook::hook() {
memcpy(m_pOriginalBytes, m_pSource, HOOKSIZE); memcpy(m_pOriginalBytes, m_pSource, HOOKSIZE);
// populate trampoline // populate trampoline
memcpy(m_pTrampolineAddr, m_pSource, HOOKSIZE); // first, original func bytes memcpy(m_pTrampolineAddr, m_pSource, HOOKSIZE); // first, original func bytes
memcpy((uint8_t*)m_pTrampolineAddr + HOOKSIZE, PUSH_RAX, sizeof(PUSH_RAX)); // then, pushq %rax 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 memcpy((uint8_t*)m_pTrampolineAddr + HOOKSIZE + sizeof(PUSH_RAX), ABSOLUTE_JMP_ADDRESS, sizeof(ABSOLUTE_JMP_ADDRESS)); // then, jump to source
@ -117,7 +116,8 @@ bool CFunctionHook::hook() {
} }
// fixup trampoline addr // fixup trampoline addr
*(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)); *(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 // make jump to hk
mprotect((uint8_t*)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);