[core] native api (#108)

* [core] Propose the LSPosed native API

* update native api specification

* add symbol cache

* [core] Native API implementation

* Fix typo

* Allow modules to load their own so

* bug fixes

* Fix crash in InstallRiruHooks

* Ignore failed dlopen

core/src/main/cpp/main/include/art/runtime/art_method.h

@@ -22,7 +22,7 @@ namespace art {
             return PrettyMethod(thiz, true);
         }
 
-        static void Setup(void *handle, HookFunType hook_func) {
+        static void Setup(void *handle) {
             LOGD("art_method hook setup, handle=%p", handle);
             RETRIEVE_MEM_FUNC_SYMBOL(PrettyMethod, "_ZN3art9ArtMethod12PrettyMethodEb");
         }

core/src/main/cpp/main/include/art/runtime/class_linker.h

@@ -79,7 +79,7 @@ namespace art {
         }
 
         // @ApiSensitive(Level.MIDDLE)
-        static void Setup(void *handle, HookFunType hook_func) {
+        static void Setup(void *handle) {
             LOGD("Classlinker hook setup, handle=%p", handle);
             int api_level = lspd::GetAndroidApiLevel();
             size_t OFFSET_classlinker;  // Get offset from art::Runtime::RunRootClinits() call in IDA
@@ -128,7 +128,7 @@ namespace art {
             RETRIEVE_MEM_FUNC_SYMBOL(SetEntryPointsToInterpreter,
                                      "_ZNK3art11ClassLinker27SetEntryPointsToInterpreterEPNS_9ArtMethodE");
 
-            lspd::HookSyms(handle, hook_func, ShouldUseInterpreterEntrypoint);
+            lspd::HookSyms(handle, ShouldUseInterpreterEntrypoint);
 
             if (api_level >= __ANDROID_API_R__) {
                 // In android R, FixupStaticTrampolines won't be called unless it's marking it as
@@ -136,9 +136,9 @@ namespace art {
                 // So we miss some calls between initialized and visiblyInitialized.
                 // Therefore we hook the new introduced MarkClassInitialized instead
                 // This only happens on non-x86 devices
-                lspd::HookSyms(handle, hook_func, MarkClassInitialized);
+                lspd::HookSyms(handle, MarkClassInitialized);
             } else {
-                lspd::HookSyms(handle, hook_func, FixupStaticTrampolines);
+                lspd::HookSyms(handle, FixupStaticTrampolines);
             }
 
             // MakeInitializedClassesVisiblyInitialized will cause deadlock

core/src/main/cpp/main/include/art/runtime/gc/heap.h

@@ -31,7 +31,7 @@ namespace art {
             }
 
             // @ApiSensitive(Level.MIDDLE)
-            static void Setup(void *handle, HookFunType hook_func) {
+            static void Setup(void *handle) {
                 int api_level = lspd::GetAndroidApiLevel();
                 size_t OFFSET_heap;  // Get offset from art::Runtime::RunRootClinits() call in IDA
                 switch (api_level) {

core/src/main/cpp/main/include/art/runtime/hidden_api.h

@@ -39,17 +39,17 @@ namespace art {
                 });
 
         // @ApiSensitive(Level.HIGH)
-        static void DisableHiddenApi(void *handle, HookFunType hook_func) {
+        static void DisableHiddenApi(void *handle) {
             const int api_level = lspd::GetAndroidApiLevel();
             if (api_level < __ANDROID_API_P__) {
                 return;
             }
             if (api_level == __ANDROID_API_P__) {
-                lspd::HookSyms(handle, hook_func, GetMethodActionImpl);
-                lspd::HookSyms(handle, hook_func, GetFieldActionImpl);
+                lspd::HookSyms(handle, GetMethodActionImpl);
+                lspd::HookSyms(handle, GetFieldActionImpl);
             } else {
-                lspd::HookSyms(handle, hook_func, ShouldDenyAccessToMethodImpl);
-                lspd::HookSyms(handle, hook_func, ShouldDenyAccessToFieldImpl);
+                lspd::HookSyms(handle, ShouldDenyAccessToMethodImpl);
+                lspd::HookSyms(handle, ShouldDenyAccessToFieldImpl);
             }
         };
 

core/src/main/cpp/main/include/art/runtime/instrumentation.h

@@ -22,8 +22,8 @@ namespace art {
                     }
                 });
 
-        static void DisableUpdateHookedMethodsCode(void *handle, HookFunType hook_func) {
-            lspd::HookSym(handle, hook_func, UpdateMethodsCode);
+        static void DisableUpdateHookedMethodsCode(void *handle) {
+            lspd::HookSym(handle, UpdateMethodsCode);
         }
     }
 }

core/src/main/cpp/main/include/art/runtime/jni_env_ext.h

@@ -21,7 +21,7 @@ namespace art {
         JNIEnvExt(void *thiz) : HookedObject(thiz) {}
 
         // @ApiSensitive(Level.MIDDLE)
-        static void Setup(void *handle, HookFunType hook_func) {
+        static void Setup(void *handle) {
             RETRIEVE_MEM_FUNC_SYMBOL(NewLocalRef, "_ZN3art9JNIEnvExt11NewLocalRefEPNS_6mirror6ObjectE");
             RETRIEVE_MEM_FUNC_SYMBOL(DeleteLocalRef, "_ZN3art9JNIEnvExt14DeleteLocalRefEP8_jobject");
         }

core/src/main/cpp/main/include/art/runtime/mirror/class.h

@@ -55,13 +55,13 @@ namespace art {
             Class(void *thiz) : HookedObject(thiz) {}
 
             // @ApiSensitive(Level.MIDDLE)
-            static void Setup(void *handle, HookFunType hook_func) {
+            static void Setup(void *handle) {
                 RETRIEVE_MEM_FUNC_SYMBOL(GetDescriptor, "_ZN3art6mirror5Class13GetDescriptorEPNSt3__112"
                                                     "basic_stringIcNS2_11char_traitsIcEENS2_9allocatorIcEEEE");
 
                 RETRIEVE_MEM_FUNC_SYMBOL(GetClassDef, "_ZN3art6mirror5Class11GetClassDefEv");
 
-                lspd::HookSyms(handle, hook_func, IsInSamePackage);
+                lspd::HookSyms(handle, IsInSamePackage);
             }
 
             const char *GetDescriptor(std::string *storage) {

core/src/main/cpp/main/include/art/runtime/reflection.h

@@ -21,8 +21,8 @@ namespace art {
                 return backup(obj, declaring_class, access_flags, calling_class);
             });
 
-    static void PermissiveAccessByReflection(void *handle, HookFunType hook_func) {
-        lspd::HookSym(handle, hook_func, VerifyAccess);
+    static void PermissiveAccessByReflection(void *handle) {
+        lspd::HookSym(handle, VerifyAccess);
     }
 }
 #endif //LSPOSED_REFLECTION_H

core/src/main/cpp/main/include/art/runtime/runtime.h

@@ -18,7 +18,7 @@ namespace art {
         }
 
         // @ApiSensitive(Level.LOW)
-        static void Setup(void *handle, HookFunType hook_func) {
+        static void Setup(void *handle) {
             RETRIEVE_FIELD_SYMBOL(instance, "_ZN3art7Runtime9instance_E");
             void * thiz = *reinterpret_cast<void**>(instance);
             LOGD("_ZN3art7Runtime9instance_E = %p", thiz);

core/src/main/cpp/main/include/art/runtime/thread.h

@@ -26,7 +26,7 @@ namespace art {
             return Thread(CurrentFromGdb());
         }
 
-        static void Setup(void *handle, [[maybe_unused]] HookFunType hook_func) {
+        static void Setup(void *handle) {
             RETRIEVE_MEM_FUNC_SYMBOL(DecodeJObject,
                                  "_ZNK3art6Thread13DecodeJObjectEP8_jobject");
             RETRIEVE_FUNC_SYMBOL(CurrentFromGdb,

core/src/main/cpp/main/include/base/object.h

@@ -7,6 +7,7 @@
 #include <dlfcn.h>
 #include <sys/mman.h>
 #include "config.h"
+#include "native_hook.h"
 
 #define _uintval(p)               reinterpret_cast<uintptr_t>(p)
 #define _ptr(p)                   reinterpret_cast<void *>(p)
@@ -19,8 +20,6 @@
                                               _page_align(_uintval(p) + n) != _page_align(_uintval(p)) ? _page_align(n) + _page_size : _page_align(n), \
                                               PROT_READ | PROT_WRITE | PROT_EXEC)
 
-typedef void (*HookFunType)(void *, void *, void **);
-
 #define CONCATENATE(a, b) a##b
 
 #define CREATE_HOOK_STUB_ENTRIES(SYM, RET, FUNC, PARAMS, DEF)                               \
@@ -110,10 +109,9 @@ namespace lspd {
         return Dlsym(handle, last...);
     }
 
-    ALWAYS_INLINE inline static void HookFunction(HookFunType hook_fun, void *original,
-                                                  void *replace, void **backup) {
+    ALWAYS_INLINE inline static void HookFunction(void *original, void *replace, void **backup) {
         _make_rwx(original, _page_size);
-        hook_fun(original, replace, backup);
+        hook_func(original, replace, backup);
     }
 
     template<class, template<class, class...> class>
@@ -207,15 +205,14 @@ namespace lspd {
     };
 
     template<typename T>
-    inline static bool HookSym(void *handle, HookFunType hook_fun, T &arg) {
-        auto original = Dlsym(handle, arg.sym);
+    inline static bool HookSymNoHandle(void *original, T &arg) {
         if (original) {
             if constexpr(is_instance<decltype(arg.backup), MemberFunction>::value) {
                 void *backup;
-                HookFunction(hook_fun, original, reinterpret_cast<void *>(arg.replace), &backup);
+                HookFunction(original, reinterpret_cast<void *>(arg.replace), &backup);
                 arg.backup = reinterpret_cast<typename decltype(arg.backup)::FunType>(backup);
             } else {
-                HookFunction(hook_fun, original, reinterpret_cast<void *>(arg.replace),
+                HookFunction(original, reinterpret_cast<void *>(arg.replace),
                              reinterpret_cast<void **>(&arg.backup));
             }
             return true;
@@ -224,9 +221,15 @@ namespace lspd {
         }
     }
 
+    template<typename T>
+    inline static bool HookSym(void *handle, T &arg) {
+        auto original = Dlsym(handle, arg.sym);
+        return HookSymNoHandle(original, arg);
+    }
+
     template<typename T, typename...Args>
-    inline static bool HookSyms(void *handle, HookFunType hook_fun, T &first, Args &...rest) {
-        if (!(HookSym(handle, hook_fun, first) || ... || HookSym(handle, hook_fun, rest))) {
+    inline static bool HookSyms(void *handle, T &first, Args &...rest) {
+        if (!(HookSym(handle, first) || ... || HookSym(handle, rest))) {
             LOGW("Hook Fails: %s", first.sym);
             return false;
         }

core/src/main/cpp/main/src/context.cpp

@@ -1,7 +1,6 @@
 #include <jni.h>
 #include <android-base/macros.h>
 #include <JNIHelper.h>
-#include <android-base/logging.h>
 #include "jni/config_manager.h"
 #include "jni/art_class_linker.h"
 #include "jni/art_heap.h"
@@ -9,19 +8,16 @@
 #include "jni/resources_hook.h"
 #include <dl_util.h>
 #include <art/runtime/jni_env_ext.h>
-#include <art/runtime/mirror/class.h>
 #include <android-base/strings.h>
-#include <nativehelper/scoped_local_ref.h>
 #include "jni/pending_hooks.h"
 #include <sandhook.h>
 #include <fstream>
 #include <sstream>
 #include "context.h"
 #include "config_manager.h"
-#include "art/runtime/runtime.h"
-#include "art/runtime/gc/heap.h"
 #include "native_hook.h"
 #include "jni/logger.h"
+#include "jni/native_api.h"
 
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wunused-value"
@@ -121,6 +117,7 @@ namespace lspd {
         RegisterArtHeap(env);
         RegisterEdxpYahfa(env);
         RegisterPendingHooks(env);
+        RegisterNativeAPI(env);
 
         variant_ = Variant(ConfigManager::GetInstance()->GetVariant());
         LOGI("LSP Variant: %d", variant_);

core/src/main/cpp/main/src/jni/native_api.cpp

@@ -0,0 +1,23 @@
+//
+// Created by 双草酸酯 on 2/7/21.
+//
+#include "native_api.h"
+#include "nativehelper/jni_macros.h"
+#include "native_util.h"
+#include "JNIHelper.h"
+#include "../native_api.h"
+
+namespace lspd {
+    LSP_DEF_NATIVE_METHOD(void, NativeAPI, recordNativeEntrypoint, jstring jstr) {
+        JUTFString str(env, jstr);
+        RegisterNativeLib(str);
+    }
+
+    static JNINativeMethod gMethods[] = {
+            LSP_NATIVE_METHOD(NativeAPI, recordNativeEntrypoint, "(Ljava/lang/String;)V")
+    };
+
+    void RegisterNativeAPI(JNIEnv *env) {
+        REGISTER_LSP_NATIVE_METHODS(NativeAPI);
+    }
+}

core/src/main/cpp/main/src/jni/native_api.h

@@ -0,0 +1,15 @@
+//
+// Created by 双草酸酯 on 2/7/21.
+//
+
+#ifndef LSPOSED_JNI_NATIVE_API_H
+#define LSPOSED_JNI_NATIVE_API_H
+
+#include <jni.h>
+
+namespace lspd {
+    void RegisterNativeAPI(JNIEnv*);
+}
+
+
+#endif //LSPOSED_JNI_NATIVE_API_H

core/src/main/cpp/main/src/main.cpp

@@ -1,22 +1,13 @@
-#include <cstdio>
-#include <unistd.h>
-#include <fcntl.h>
 #include <jni.h>
 #include <cstring>
 #include <cstdlib>
-#include <sys/mman.h>
 #include <array>
-#include <thread>
-#include <vector>
-#include <utility>
-#include <string>
-#include <android-base/logging.h>
 #include "logging.h"
 #include "config.h"
 #include "context.h"
 #include <riru.h>
 #include "config_manager.h"
-#include "native_hook.h"
+#include "symbol_cache.h"
 
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wunused-value"
@@ -25,6 +16,7 @@ namespace lspd {
     static void onModuleLoaded() {
         LOGI("onModuleLoaded: welcome to LSPosed!");
         // rirud must be used in onModuleLoaded
+        InitSymbolCache();
         ConfigManager::Init();
     }
 

core/src/main/cpp/main/src/native_api.cpp

@@ -0,0 +1,89 @@
+//
+// Created by kotori on 2/4/21.
+//
+
+#include "native_api.h"
+#include "symbol_cache.h"
+#include <dobby.h>
+#include <vector>
+#include <base/object.h>
+
+/*
+ * Module: define xposed_native file in /assets, each line is a .so file name
+ * LSP: Hook do_dlopen, if any .so file matches the name above, try to call
+ *      "native_init(void*)" function in target so with function pointer of "init" below.
+ * Module: Call init function with the pointer of callback function.
+ * LSP: Store the callback function pointer (multiple callback allowed) and return
+ *      LsposedNativeAPIEntries struct.
+ * Module: Since JNI is not yet available at that time, module can store the struct to somewhere else,
+ *      and handle them in JNI_Onload or later.
+ * Module: Do some MAGIC provided by LSPosed framework.
+ * LSP: If any so loaded by target app, we will send a callback to the specific module callback function.
+ *      But an exception is, if the target skipped dlopen and handle linker stuffs on their own, the
+ *      callback will not work.
+ */
+
+namespace lspd {
+    std::vector<LsposedNativeOnModuleLoaded> moduleLoadedCallbacks;
+    std::vector<std::string> moduleNativeLibs;
+
+    LsposedNativeAPIEntriesV1 init(LsposedNativeOnModuleLoaded onModuleLoaded) {
+        if (onModuleLoaded != nullptr) moduleLoadedCallbacks.push_back(onModuleLoaded);
+
+        LsposedNativeAPIEntriesV1 ret{
+                .version = 1,
+                .inlineHookFunc = HookFunction
+        };
+        return ret;
+    }
+
+    void RegisterNativeLib(const std::string& library_name) {
+        LOGD("native_api: Registered %s", library_name.c_str());
+        moduleNativeLibs.push_back(library_name);
+    }
+
+    bool hasEnding(std::string_view fullString, std::string_view ending) {
+        if (fullString.length() >= ending.length()) {
+            return (0 == fullString.compare (fullString.length() - ending.length(), ending.length(), ending));
+        } else {
+            return false;
+        }
+    }
+
+    CREATE_HOOK_STUB_ENTRIES(
+            "__dl__Z9do_dlopenPKciPK17android_dlextinfoPKv",
+            void*, do_dlopen, (const char* name, int flags, const void* extinfo,
+                    const void* caller_addr), {
+                auto *handle = backup(name, flags, extinfo, caller_addr);
+                std::string ns(name);
+                LOGD("native_api: do_dlopen(%s)", name);
+                if (handle == nullptr) {
+                    return nullptr;
+                }
+                for (std::string_view module_lib: moduleNativeLibs) {
+                    // the so is a module so
+                    if (UNLIKELY(hasEnding(ns, module_lib))) {
+                        LOGI("Loading module native library %s", module_lib.data());
+                        void* native_init_sym = dlsym(handle, "native_init");
+                        if (UNLIKELY(native_init_sym == nullptr)) {
+                            LOGE("Failed to get symbol \"native_init\" from library %s", module_lib.data());
+                            break;
+                        }
+                        auto native_init = reinterpret_cast<NativeInit>(native_init_sym);
+                        native_init(reinterpret_cast<void*>(init));
+                    }
+                }
+
+                // Callbacks
+                for (LsposedNativeOnModuleLoaded callback: moduleLoadedCallbacks) {
+                    callback(name, handle);
+                }
+                return handle;
+            });
+
+    void InstallNativeAPI() {
+        LOGD("InstallNativeAPI: %p", symbol_do_dlopen);
+        symbol_do_dlopen = DobbySymbolResolver(nullptr, "__dl__Z9do_dlopenPKciPK17android_dlextinfoPKv");
+        HookSymNoHandle(symbol_do_dlopen, do_dlopen);
+    }
+}

core/src/main/cpp/main/src/native_api.h

@@ -0,0 +1,25 @@
+//
+// Created by kotori on 2/4/21.
+//
+
+#ifndef LSPOSED_NATIVE_API_H
+#define LSPOSED_NATIVE_API_H
+
+#include <cstdint>
+#include <string>
+#include <base/object.h>
+
+// typedef int (*HookFunType)(void *, void *, void **);  // For portability
+typedef void (*LsposedNativeOnModuleLoaded) (const char* name, void* handle);
+typedef void (*NativeInit)(void * init_func);
+struct LsposedNativeAPIEntriesV1 {
+    uint32_t version;
+    lspd::HookFunType inlineHookFunc;
+};
+
+namespace lspd {
+    void InstallNativeAPI();
+    void RegisterNativeLib(const std::string& library_name);
+}
+
+#endif //LSPOSED_NATIVE_API_H

core/src/main/cpp/main/src/native_hook.cpp

@@ -10,6 +10,7 @@
 #include "bionic_linker_restriction.h"
 #include "utils.h"
 #include "logging.h"
+#include "native_api.h"
 #include "native_hook.h"
 #include "riru_hook.h"
 #include "art/runtime/mirror/class.h"
@@ -17,7 +18,6 @@
 #include "art/runtime/class_linker.h"
 #include "art/runtime/gc/heap.h"
 #include "art/runtime/hidden_api.h"
-#include "art/runtime/art_method.h"
 #include "art/runtime/instrumentation.h"
 #include "art/runtime/reflection.h"
 
@@ -27,7 +27,6 @@ namespace lspd {
 
     static volatile bool installed = false;
     static volatile bool art_hooks_installed = false;
-    static HookFunType hook_func =  reinterpret_cast<HookFunType>(DobbyHook);
 
     void InstallArtHooks(void *art_handle);
 
@@ -44,7 +43,7 @@ namespace lspd {
             return;
         }
         LOGI("Using api level %d", api_level);
-        InstallRiruHooks(hook_func);
+        InstallRiruHooks();
         // install ART hooks
         if (api_level >= __ANDROID_API_Q__) {
             // From Riru v22 we can't get ART handle by hooking dlopen, so we get libart.so from soinfo.
@@ -68,22 +67,24 @@ namespace lspd {
             ScopedDlHandle art_handle(kLibArtLegacyPath.c_str());
             InstallArtHooks(art_handle.Get());
         }
+
+        InstallNativeAPI();
     }
 
     void InstallArtHooks(void *art_handle) {
         if (art_hooks_installed) {
             return;
         }
-        art::hidden_api::DisableHiddenApi(art_handle, hook_func);
-        art::Runtime::Setup(art_handle, hook_func);
-        art::gc::Heap::Setup(art_handle, hook_func);
-        art::art_method::Setup(art_handle, hook_func);
-        art::Thread::Setup(art_handle, hook_func);
-        art::ClassLinker::Setup(art_handle, hook_func);
-        art::mirror::Class::Setup(art_handle, hook_func);
-        art::JNIEnvExt::Setup(art_handle, hook_func);
-        art::instrumentation::DisableUpdateHookedMethodsCode(art_handle, hook_func);
-        art::PermissiveAccessByReflection(art_handle, hook_func);
+        art::hidden_api::DisableHiddenApi(art_handle);
+        art::Runtime::Setup(art_handle);
+        art::gc::Heap::Setup(art_handle);
+        art::art_method::Setup(art_handle);
+        art::Thread::Setup(art_handle);
+        art::ClassLinker::Setup(art_handle);
+        art::mirror::Class::Setup(art_handle);
+        art::JNIEnvExt::Setup(art_handle);
+        art::instrumentation::DisableUpdateHookedMethodsCode(art_handle);
+        art::PermissiveAccessByReflection(art_handle);
 
         art_hooks_installed = true;
         LOGI("ART hooks installed");

core/src/main/cpp/main/src/native_hook.h

@@ -1,8 +1,10 @@
 
 #pragma once
+#include <dobby.h>
 
 namespace lspd {
-
+    typedef void (*HookFunType)(void *, void *, void **);
+    static HookFunType hook_func =  reinterpret_cast<HookFunType>(DobbyHook);
     void InstallInlineHooks();
 
 }

core/src/main/cpp/main/src/riru_hook.cpp

@@ -101,7 +101,7 @@ namespace lspd {
                 return res;
             });
 
-    void InstallRiruHooks(HookFunType hook_func) {
+    void InstallRiruHooks() {
 
         LOGI("Start to install Riru hook");
 
@@ -112,8 +112,7 @@ namespace lspd {
             LOGE("Failed to get symbol of __system_property_get");
             return;
         }
-        HookFunction(hook_func, sym, reinterpret_cast<void *>(decltype(__system_property_get)::replace),
-                  reinterpret_cast<void **>(&decltype(__system_property_get)::backup));
+        HookSymNoHandle(sym, __system_property_get);
 
         if (GetAndroidApiLevel() >= __ANDROID_API_P__) {
             sym = DobbySymbolResolver(nullptr,
@@ -122,8 +121,7 @@ namespace lspd {
                 LOGE("Failed to get symbol of _ZN7android4base11GetPropertyERKNSt3__112basic_stringIcNS1_11char_traitsIcEENS1_9allocatorIcEEEES9_");
                 return;
             }
-            HookFunction(hook_func, sym, reinterpret_cast<void *>(decltype(GetProperty)::replace),
-                      reinterpret_cast<void **>(&decltype(GetProperty)::backup));
+            HookSymNoHandle(sym, GetProperty);
         }
 
         LOGI("Riru hooks installed");

core/src/main/cpp/main/src/riru_hook.h

@@ -16,6 +16,6 @@ namespace lspd {
     static constexpr const char *kPropValueCompilerFlagsWS = " --inline-max-code-units=0";
 
 
-    void InstallRiruHooks(HookFunType hook_func);
+    void InstallRiruHooks();
 
 }

core/src/main/cpp/main/src/symbol_cache.cpp

@@ -0,0 +1,18 @@
+//
+// Created by kotori on 2/7/21.
+//
+
+#include "symbol_cache.h"
+#include <dobby.h>
+#include <art/base/macros.h>
+#include <logging.h>
+
+namespace lspd {
+    void InitSymbolCache() {
+        if (LIKELY(initialized)) return;
+        LOGD("InitSymbolCache");
+        // TODO: set image name
+        symbol_do_dlopen = DobbySymbolResolver(nullptr, "__dl__Z9do_dlopenPKciPK17android_dlextinfoPKv");
+        initialized = true;
+    }
+}

core/src/main/cpp/main/src/symbol_cache.h

@@ -0,0 +1,16 @@
+//
+// Created by kotori on 2/7/21.
+//
+
+#ifndef LSPOSED_SYMBOL_CACHE_H
+#define LSPOSED_SYMBOL_CACHE_H
+#include <atomic>
+
+namespace lspd {
+    static std::atomic_bool initialized;
+    static void* symbol_do_dlopen = nullptr;
+
+    void InitSymbolCache();
+}
+
+#endif //LSPOSED_SYMBOL_CACHE_H

core/src/main/java/de/robv/android/xposed/XposedInit.java

@@ -41,6 +41,7 @@ import de.robv.android.xposed.callbacks.XC_InitPackageResources;
 import de.robv.android.xposed.callbacks.XC_InitZygote;
 import de.robv.android.xposed.callbacks.XC_LoadPackage;
 import de.robv.android.xposed.callbacks.XCallback;
+import io.github.lsposed.lspd.nativebridge.NativeAPI;
 
 import static de.robv.android.xposed.XposedBridge.hookAllConstructors;
 import static de.robv.android.xposed.XposedBridge.hookAllMethods;
@@ -345,6 +346,7 @@ public final class XposedInit {
                     newLoadedApk.add(apk);
                 } else {
                     loadedModules.add(apk); // temporarily add it for XSharedPreference
+                    loadNativeLibs(apk);
                     boolean loadSuccess = loadModule(apk, topClassLoader, callInitZygote);
                     if (loadSuccess) {
                         newLoadedApk.add(apk);
@@ -391,6 +393,45 @@ public final class XposedInit {
         }
     }
 
+    /**
+     * Load all so from an APK by reading <code>assets/native_init</code>.
+     * It will only store the so names but not doing anything.
+     */
+    private static boolean loadNativeLibs(String apk) {
+        ZipFile zipFile = null;
+        InputStream is;
+        try {
+            zipFile = new ZipFile(apk);
+            ZipEntry zipEntry = zipFile.getEntry("assets/native_init");
+            if (zipEntry == null) {
+                Log.e(TAG, "  assets/native_init not found in the APK");
+                closeSilently(zipFile);
+                return false;
+            }
+            is = zipFile.getInputStream(zipEntry);
+        } catch (IOException e) {
+            Log.w(TAG, "  Cannot read assets/native_init in the APK. Maybe it doesn't support native API", e);
+            closeSilently(zipFile);
+            return false;
+        }
+        BufferedReader moduleLibraryReader = new BufferedReader(new InputStreamReader(is));
+        String moduleLibraryName;
+        try {
+            while ((moduleLibraryName = moduleLibraryReader.readLine()) != null) {
+                if (!moduleLibraryName.startsWith("#") && moduleLibraryName.endsWith(".so")) {
+                    NativeAPI.recordNativeEntrypoint(moduleLibraryName);
+                }
+            }
+        } catch (IOException e) {
+            Log.e(TAG, "  Failed to load native library list from " + apk, e);
+            return false;
+        } finally {
+            closeSilently(is);
+            closeSilently(zipFile);
+        }
+        return true;
+    }
+
     /**
      * Load a module from an APK by calling the init(String) method for all classes defined
      * in <code>assets/xposed_init</code>.
@@ -403,7 +444,14 @@ public final class XposedInit {
             return false;
         }
 
-        ClassLoader mcl = new PathClassLoader(apk, topClassLoader);
+        // module can load it's own so
+        StringBuilder nativePath = new StringBuilder();
+        for (String i: Build.SUPPORTED_ABIS) {
+            nativePath.append(apk).append("!/lib/").append(i).append(File.pathSeparator);
+        }
+        // Log.d(TAG, "Allowed native path" + nativePath.toString());
+        ClassLoader mcl = new PathClassLoader(apk, nativePath.toString(), topClassLoader);
+
         try {
             if (mcl.loadClass(INSTANT_RUN_CLASS) != null) {
                 Log.e(TAG, "  Cannot load module, please disable \"Instant Run\" in Android Studio.");

core/src/main/java/io/github/lsposed/lspd/nativebridge/NativeAPI.java

@@ -0,0 +1,5 @@
+package io.github.lsposed.lspd.nativebridge;
+
+public class NativeAPI {
+    public static native void recordNativeEntrypoint(String library_name);
+}