LSPlant/lsplant/src/main/jni/common.hpp
2022-03-12 02:04:58 +08:00

106 lines
2.8 KiB
C++

#pragma once
#include <sys/system_properties.h>
#include <list>
#include <shared_mutex>
#include <string_view>
#include <unordered_map>
#include <unordered_set>
#include "logging.hpp"
#include "lsplant.hpp"
#include "utils/hook_helper.hpp"
namespace lsplant {
enum class Arch {
kArm,
kArm64,
kX86,
kX8664,
};
consteval inline Arch GetArch() {
#if defined(__i386__)
return Arch::kX86;
#elif defined(__x86_64__)
return Arch::kX8664;
#elif defined(__arm__)
return Arch::kArm;
#elif defined(__aarch64__)
return Arch::kArm64;
#else
#error "unsupported architecture"
#endif
}
inline static constexpr auto kArch = GetArch();
template <typename T>
constexpr inline auto RoundUpTo(T v, size_t size) {
return v + size - 1 - ((v + size - 1) & (size - 1));
}
inline auto GetAndroidApiLevel() {
static auto kApiLevel = []() {
std::array<char, PROP_VALUE_MAX> prop_value;
__system_property_get("ro.build.version.sdk", prop_value.data());
int base = atoi(prop_value.data());
__system_property_get("ro.build.version.preview_sdk", prop_value.data());
return base + atoi(prop_value.data());
}();
return kApiLevel;
}
inline static constexpr auto kPointerSize = sizeof(void *);
template <typename T>
inline T GetArtSymbol(const std::function<void *(std::string_view)> &resolver,
std::string_view symbol) requires(std::is_pointer_v<T>) {
if (auto *result = resolver(symbol); result) {
return reinterpret_cast<T>(result);
} else {
LOGW("Failed to find symbol %*s", static_cast<int>(symbol.length()), symbol.data());
return nullptr;
}
}
namespace art {
class ArtMethod;
namespace dex {
class ClassDef;
}
} // namespace art
namespace {
// target, backup
inline std::unordered_map<art::ArtMethod *, std::pair<jobject, art::ArtMethod *>> hooked_methods_;
inline std::shared_mutex hooked_methods_lock_;
inline std::list<std::pair<art::ArtMethod *, art::ArtMethod *>> jit_movements_;
inline std::shared_mutex jit_movements_lock_;
} // namespace
inline bool IsHooked(art::ArtMethod *art_method) {
std::shared_lock lk(hooked_methods_lock_);
return hooked_methods_.contains(art_method);
}
inline std::list<std::pair<art::ArtMethod *, art::ArtMethod *>> GetJitMovements() {
std::unique_lock lk(jit_movements_lock_);
return std::move(jit_movements_);
}
inline void RecordHooked(art::ArtMethod *target, jobject reflected_backup, art::ArtMethod* backup) {
std::unique_lock lk(hooked_methods_lock_);
hooked_methods_.emplace(target, std::make_pair(reflected_backup, backup));
}
inline void RecordJitMovement(art::ArtMethod *target, art::ArtMethod *backup) {
std::unique_lock lk(jit_movements_lock_);
jit_movements_.emplace_back(target, backup);
}
} // namespace lsplant