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No cache setOverrideTable (#2789)

This commit is contained in:
LoveSy 2023-10-06 13:43:59 +08:00 committed by GitHub
parent 932612aa9c
commit 50c343d152
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 11 additions and 24 deletions
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4
core/src/main/jni/include/symbol_cache.h
View File

@ -35,13 +35,11 @@ namespace lspd {
struct SymbolCache {
std::atomic_flag initialized{};
void *do_dlopen;
void *setTableOverride;
SymbolCache() = default;
SymbolCache(const SymbolCache &other) :
do_dlopen(other.do_dlopen),
setTableOverride(other.setTableOverride) {}
do_dlopen(other.do_dlopen) {}
SymbolCache &operator=(const SymbolCache &other) {
new(this)SymbolCache(other);

21
core/src/main/jni/src/symbol_cache.cpp
View File

@ -44,13 +44,6 @@ namespace lspd {
}
bool FindLibArt() {
auto &art = GetArt();
if (!art->isValid()) return false;
return symbol_cache->setTableOverride = art->getSymbAddress(
"_ZN3art9JNIEnvExt16SetTableOverrideEPK18JNINativeInterface");
}
void InitSymbolCache(SymbolCache *other) {
LOGD("InitSymbolCache");
if (other && other->initialized.test(std::memory_order_acquire)) {
@ -59,18 +52,12 @@ namespace lspd {
symbol_cache->initialized.test_and_set(std::memory_order_relaxed);
return;
}
auto ok = FindLibArt();
symbol_cache->do_dlopen = SandHook::ElfImg("/linker").getSymbAddress(
"__dl__Z9do_dlopenPKciPK17android_dlextinfoPKv");
if (!ok) [[unlikely]] {
GetArt(true);
LOGE("Init symbol cache failed");
} else {
symbol_cache->initialized.test_and_set(std::memory_order_relaxed);
if (other) {
*other = *symbol_cache;
other->initialized.test_and_set(std::memory_order_acq_rel);
}
symbol_cache->initialized.test_and_set(std::memory_order_relaxed);
if (other) {
*other = *symbol_cache;
other->initialized.test_and_set(std::memory_order_acq_rel);
}
}
} // namespace lspd

10
magisk-loader/src/main/jni/src/service.cpp
View File

@ -29,6 +29,7 @@
#include "utils/jni_helper.hpp"
#include "symbol_cache.h"
#include "config_bridge.h"
#include "elf_util.h"
using namespace lsplant;
@ -197,7 +198,9 @@ namespace lspd {
auto binder_class = JNI_FindClass(env, "android/os/Binder");
exec_transact_backup_methodID_ = JNI_GetMethodID(env, binder_class, "execTransact",
"(IJJI)Z");
if (!symbol_cache->setTableOverride) {
auto *setTableOverride = SandHook::ElfImg("/libart.so").getSymbAddress<void (*)(JNINativeInterface *)>(
"_ZN3art9JNIEnvExt16SetTableOverrideEPK18JNINativeInterface");
if (!setTableOverride) {
LOGE("set table override not found");
}
memcpy(&native_interface_replace_, env->functions, sizeof(JNINativeInterface));
@ -205,9 +208,8 @@ namespace lspd {
call_boolean_method_va_backup_ = env->functions->CallBooleanMethodV;
native_interface_replace_.CallBooleanMethodV = &call_boolean_method_va_replace;
if (symbol_cache->setTableOverride != nullptr) {
reinterpret_cast<void (*)(JNINativeInterface *)>(symbol_cache->setTableOverride)(
&native_interface_replace_);
if (setTableOverride != nullptr) {
setTableOverride(&native_interface_replace_);
}
if (auto activity_thread_class = JNI_FindClass(env, "android/app/IActivityManager$Stub")) {
if (auto *set_activity_controller_field = JNI_GetStaticFieldID(env,