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Disables script patches from the Lua layer on eject. (#3628)

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This commit is contained in:
gir489 2024-08-28 17:38:13 -04:00 committed by GitHub
parent 2519de72f6
commit a63279dde9
6 changed files with 164 additions and 135 deletions
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6
src/lua/bindings/scr_patch.cpp
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@ -25,6 +25,12 @@ namespace lua::scr_patch
module->m_registered_script_patches.push_back(std::make_unique<scr_patch>(*this));
}
scr_patch::~scr_patch()
{
disable();
big::g_script_patcher_service->remove_patch(m_patch_name);
}
void scr_patch::enable()
{
if (!m_enable)

3
src/lua/bindings/scr_patch.hpp
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@ -2,7 +2,7 @@
namespace lua::scr_patch
{
struct scr_patch
class scr_patch
{
rage::joaat_t m_script;
std::string m_patch_name;
@ -21,6 +21,7 @@ namespace lua::scr_patch
// Param: patch_: table: The bytes to be written into the script's bytecode.
// Adds a patch for the specified script.
explicit scr_patch(const std::string& script_name, const std::string& patch_name, const std::string& pattern, const int offset, sol::table patch_, sol::this_state state);
~scr_patch();
// Lua API: Function
// Class: scr_patch

1
src/lua/lua_module.cpp
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@ -126,6 +126,7 @@ namespace big
{
std::lock_guard guard(m_registered_scripts_mutex);
m_registered_scripts.clear();
m_registered_script_patches.clear();
}
for (const auto owned_tab : m_owned_tabs)

71
src/services/script_patcher/script_patch.hpp
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@ -1,34 +1,39 @@
#pragma once
#include "memory/pattern.hpp"
namespace big
{
struct script_data;
class script_patch
{
rage::joaat_t m_script;
const memory::pattern m_pattern;
std::string m_name;
int32_t m_offset;
std::vector<uint8_t> m_patch;
std::vector<uint8_t> m_original;
bool* m_bool;
int32_t m_ip;
static uint8_t* get_code_address(script_data* data, uint32_t index);
static const std::optional<uint32_t> get_code_location_by_pattern(script_data* data, const memory::pattern& pattern);
public:
void enable(script_data* data);
void disable(script_data* data);
inline rage::joaat_t get_script()
{
return m_script;
}
script_patch(rage::joaat_t script, std::string name, const memory::pattern pattern, int32_t offset, std::vector<uint8_t> patch, bool* enable_bool);
void update(script_data* data);
};
#pragma once
#include "memory/pattern.hpp"
namespace big
{
struct script_data;
class script_patch
{
rage::joaat_t m_script;
const memory::pattern m_pattern;
std::string m_name;
int32_t m_offset;
std::vector<uint8_t> m_patch;
std::vector<uint8_t> m_original;
bool* m_bool;
int32_t m_ip;
static uint8_t* get_code_address(script_data* data, uint32_t index);
static const std::optional<uint32_t> get_code_location_by_pattern(script_data* data, const memory::pattern& pattern);
public:
void enable(script_data* data);
void disable(script_data* data);
inline rage::joaat_t get_script()
{
return m_script;
}
inline std::string get_name()
{
return m_name;
}
script_patch(rage::joaat_t script, std::string name, const memory::pattern pattern, int32_t offset, std::vector<uint8_t> patch, bool* enable_bool);
void update(script_data* data);
};
}

215
src/services/script_patcher/script_patcher_service.cpp
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@ -1,101 +1,116 @@
#include "script_patcher_service.hpp"
#include "script_data.hpp"
#include "script_patch.hpp"
#include <script/scrProgram.hpp>
namespace big
{
script_patcher_service::script_patcher_service()
{
g_script_patcher_service = this;
}
script_patcher_service::~script_patcher_service()
{
m_script_data.clear();
m_script_patches.clear();
g_script_patcher_service = nullptr;
}
script_data* script_patcher_service::get_data_for_script(rage::joaat_t script)
{
for (auto& p : m_script_data)
{
if (p.first == script)
{
return p.second.get();
}
}
return nullptr;
}
bool script_patcher_service::does_script_have_patches(rage::joaat_t script)
{
for (auto& p : m_script_patches)
{
if (p.get_script() == script)
return true;
}
return false;
}
void script_patcher_service::create_data_for_script(rage::scrProgram* program)
{
auto pages = new uint8_t*[program->get_num_code_pages()];
for (auto i = 0u; i < program->get_num_code_pages(); i++)
{
pages[i] = new uint8_t[program->get_code_page_size(i)];
std::memcpy(pages[i], program->get_code_page(i), program->get_code_page_size(i));
}
m_script_data.emplace(program->m_name_hash, std::make_unique<script_data>(program->m_code_size, pages, program->get_num_code_pages()));
}
void script_patcher_service::update_all_patches_for_script(rage::joaat_t script)
{
auto data = get_data_for_script(script);
for (auto& p : m_script_patches)
if (p.get_script() == script)
p.update(data);
}
void script_patcher_service::add_patch(script_patch&& patch)
{
m_script_patches.push_back(std::move(patch));
}
void script_patcher_service::on_script_load(rage::scrProgram* program)
{
if (get_data_for_script(program->m_name_hash) == nullptr && does_script_have_patches(program->m_name_hash))
{
create_data_for_script(program);
update_all_patches_for_script(program->m_name_hash);
}
}
uint8_t** script_patcher_service::get_script_bytecode(rage::joaat_t script)
{
if (auto data = get_data_for_script(script))
return data->m_bytecode;
return nullptr;
}
void script_patcher_service::update()
{
for (auto& p : m_script_patches)
{
auto data = get_data_for_script(p.get_script());
if (data)
{
p.update(data);
}
}
}
#include "script_patcher_service.hpp"
#include "script_data.hpp"
#include "script_patch.hpp"
#include <script/scrProgram.hpp>
namespace big
{
script_patcher_service::script_patcher_service()
{
g_script_patcher_service = this;
}
script_patcher_service::~script_patcher_service()
{
m_script_data.clear();
m_script_patches.clear();
g_script_patcher_service = nullptr;
}
script_data* script_patcher_service::get_data_for_script(rage::joaat_t script)
{
for (auto& p : m_script_data)
{
if (p.first == script)
{
return p.second.get();
}
}
return nullptr;
}
bool script_patcher_service::does_script_have_patches(rage::joaat_t script)
{
for (auto& p : m_script_patches)
{
if (p.get_script() == script)
return true;
}
return false;
}
void script_patcher_service::create_data_for_script(rage::scrProgram* program)
{
auto pages = new uint8_t*[program->get_num_code_pages()];
for (auto i = 0u; i < program->get_num_code_pages(); i++)
{
pages[i] = new uint8_t[program->get_code_page_size(i)];
std::memcpy(pages[i], program->get_code_page(i), program->get_code_page_size(i));
}
m_script_data.emplace(program->m_name_hash, std::make_unique<script_data>(program->m_code_size, pages, program->get_num_code_pages()));
}
void script_patcher_service::update_all_patches_for_script(rage::joaat_t script)
{
auto data = get_data_for_script(script);
for (auto& p : m_script_patches)
if (p.get_script() == script)
p.update(data);
}
void script_patcher_service::add_patch(script_patch&& patch)
{
m_script_patches.push_back(std::move(patch));
}
void script_patcher_service::remove_patch(std::string_view patch_name)
{
for (auto it = m_script_patches.begin(); it != m_script_patches.end();)
{
if (it->get_name() == patch_name)
{
it = m_script_patches.erase(it);
}
else
{
++it;
}
}
}
void script_patcher_service::on_script_load(rage::scrProgram* program)
{
if (get_data_for_script(program->m_name_hash) == nullptr && does_script_have_patches(program->m_name_hash))
{
create_data_for_script(program);
update_all_patches_for_script(program->m_name_hash);
}
}
uint8_t** script_patcher_service::get_script_bytecode(rage::joaat_t script)
{
if (auto data = get_data_for_script(script))
return data->m_bytecode;
return nullptr;
}
void script_patcher_service::update()
{
for (auto& p : m_script_patches)
{
auto data = get_data_for_script(p.get_script());
if (data)
{
p.update(data);
}
}
}
}

3
src/services/script_patcher/script_patcher_service.hpp
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@ -9,7 +9,7 @@ namespace big
{
class script_patcher_service
{
std::vector<script_patch> m_script_patches;
std::list<script_patch> m_script_patches;
std::unordered_map<rage::joaat_t, std::unique_ptr<script_data>> m_script_data;
script_data* get_data_for_script(rage::joaat_t script);
bool does_script_have_patches(rage::joaat_t script);
@ -20,6 +20,7 @@ namespace big
~script_patcher_service();
void add_patch(script_patch&& patch);
void remove_patch(std::string_view patch_name);
void on_script_load(rage::scrProgram* program);
uint8_t** get_script_bytecode(rage::joaat_t script);
void update_all_patches_for_script(rage::joaat_t script);