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Small hooking adjustments

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This commit is contained in:
momo5502 2023-05-13 10:15:31 +02:00
parent 2d6a51a23a
commit 9b0e14115d
2 changed files with 18 additions and 5 deletions
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21
src/common/utils/hook.cpp
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@ -29,7 +29,7 @@ namespace utils::hook
uint8_t* allocate_somewhere_near(const void* base_address, const size_t granularity, const size_t size)
{
size_t target_address = reinterpret_cast<size_t>(base_address) - (1ull << 31);
size_t target_address = reinterpret_cast<size_t>(base_address) - (1ull << 31);
target_address &= ~(granularity - 1);
while (true)
@ -415,7 +415,12 @@ namespace utils::hook
bool is_relatively_far(const void* pointer, const void* data, const int offset)
{
const int64_t diff = reinterpret_cast<size_t>(data) - (reinterpret_cast<size_t>(pointer) + offset);
return is_relatively_far(reinterpret_cast<size_t>(pointer), reinterpret_cast<size_t>(data), offset);
}
bool is_relatively_far(const size_t pointer, const size_t data, const int offset)
{
const auto diff = static_cast<int64_t>(data - (pointer + offset));
const auto small_diff = static_cast<int32_t>(diff);
return diff != static_cast<int64_t>(small_diff);
}
@ -534,19 +539,25 @@ namespace utils::hook
return result;
}
void inject(void* pointer, const void* data)
void inject(size_t pointer, size_t data)
{
if (is_relatively_far(pointer, data, 4))
{
throw std::runtime_error("Too far away to create 32bit relative branch");
}
set<int32_t>(pointer, int32_t(size_t(data) - (size_t(pointer) + 4)));
set<int32_t>(
pointer, static_cast<int32_t>(data - (pointer + 4)));
}
void inject(void* pointer, const void* data)
{
return inject(reinterpret_cast<size_t>(pointer), reinterpret_cast<size_t>(data));
}
void inject(const size_t pointer, const void* data)
{
return inject(reinterpret_cast<void*>(pointer), data);
return inject(pointer, reinterpret_cast<size_t>(data));
}
std::vector<uint8_t> move_hook(void* pointer)

2
src/common/utils/hook.hpp
View File

@ -162,6 +162,7 @@ namespace utils::hook
void copy_string(size_t place, const char* str);
bool is_relatively_far(const void* pointer, const void* data, int offset = 5);
bool is_relatively_far(size_t pointer, size_t data, int offset = 5);
void call(void* pointer, void* data);
void call(size_t pointer, void* data);
@ -175,6 +176,7 @@ namespace utils::hook
void inject(void* pointer, const void* data);
void inject(size_t pointer, const void* data);
void inject(size_t pointer, size_t data);
std::vector<uint8_t> move_hook(void* pointer);
std::vector<uint8_t> move_hook(size_t pointer);