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[skip ci] Implement (Unhook/Hook)Function (LSPlt) 

Co-authored-by: Stillhard <indofreeserver@yahoo.co.id>
This commit is contained in:
JingMatrix 2024-08-28 20:40:23 +02:00
parent 42cf1c2fd5
commit 4c4a3f4fa1
1 changed files with 50 additions and 18 deletions
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68
core/src/main/jni/include/native_util.h
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@ -19,13 +19,13 @@
*/ */
#include <dlfcn.h> #include <dlfcn.h>
#include "lsplt.hpp"
#include <sys/mman.h> #include <sys/mman.h>
#pragma clang diagnostic push #pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wunused-value" #pragma clang diagnostic ignored "-Wunused-value"
#pragma once #pragma once
#include <context.h> #include <context.h>
#include "macros.h"
#include "utils/jni_helper.hpp" #include "utils/jni_helper.hpp"
#include "logging.h" #include "logging.h"
#include "config.h" #include "config.h"
@ -74,28 +74,60 @@ inline bool RegisterNativeMethodsInternal(JNIEnv *env,
#define REGISTER_LSP_NATIVE_METHODS(class_name) \ #define REGISTER_LSP_NATIVE_METHODS(class_name) \
RegisterNativeMethodsInternal(env, GetNativeBridgeSignature() + #class_name, gMethods, arraysize(gMethods)) RegisterNativeMethodsInternal(env, GetNativeBridgeSignature() + #class_name, gMethods, arraysize(gMethods))
inline int HookFunction(void *original, void *replace, void **backup) { static std::vector<std::tuple<dev_t, ino_t, const char *, void **>> plt_hook_list = {};
if constexpr (isDebug) { static auto scan_maps = lsplt::MapInfo::Scan();
Dl_info info;
if (dladdr(original, &info)) inline int plt_hook(const char *lib, const char *symbol, void *callback, void **backup) {
LOGD("Hooking {} ({}) from {} ({})", dev_t dev = 0;
info.dli_sname ? info.dli_sname : "(unknown symbol)", info.dli_saddr, ino_t inode = 0;
info.dli_fname ? info.dli_fname : "(unknown file)", info.dli_fbase); for (auto map : scan_maps) {
if (map.path == lib) {
inode = map.inode;
dev = map.dev;
break;
}
} }
/* return DobbyHook(original, reinterpret_cast<dobby_dummy_func_t>(replace), reinterpret_cast<dobby_dummy_func_t *>(backup)); */
return 1; auto result = lsplt::RegisterHook(dev, inode, symbol, callback, backup) && lsplt::CommitHook();
if (result) {
plt_hook_list.emplace_back(dev, inode, symbol, backup);
return 0;
}
return 1;
}
inline int HookFunction(void *original, void *replace, void **backup) {
Dl_info info;
if (dladdr(original, &info)) {
if constexpr (isDebug) {
LOGD("Hooking {} ({}) from {} ({})",
info.dli_sname ? info.dli_sname : "(unknown symbol)", info.dli_saddr,
info.dli_fname ? info.dli_fname : "(unknown file)", info.dli_fbase);
}
if (info.dli_sname != NULL && info.dli_fname != NULL)
return plt_hook(info.dli_fname, info.dli_sname, replace, backup);
}
return 1;
} }
inline int UnhookFunction(void *original) { inline int UnhookFunction(void *original) {
if constexpr (isDebug) { Dl_info info;
Dl_info info; if (dladdr(original, &info)) {
if (dladdr(original, &info)) if constexpr (isDebug) {
LOGD("Unhooking {} ({}) from {} ({})", LOGD("Unhooking {} ({}) from {} ({})",
info.dli_sname ? info.dli_sname : "(unknown symbol)", info.dli_saddr, info.dli_sname ? info.dli_sname : "(unknown symbol)", info.dli_saddr,
info.dli_fname ? info.dli_fname : "(unknown file)", info.dli_fbase); info.dli_fname ? info.dli_fname : "(unknown file)", info.dli_fbase);
}
for (const auto [dev, inode, symbol, backup] : plt_hook_list) {
if (info.dli_sname == symbol) {
auto result = lsplt::RegisterHook(dev, inode, symbol, backup, nullptr)
&& lsplt::CommitHook();
return 1 - result;
}
}
} }
/* return DobbyDestroy(original); */ return 1;
return 1;
} }
inline std::string GetNativeBridgeSignature() { inline std::string GetNativeBridgeSignature() {