71 lines
1.9 KiB
C++
71 lines
1.9 KiB
C++
|
#include <jni.h>
|
||
|
|
|
||
|
|
#include <xhook.h>
|
||
|
|
#include <utils.hpp>
|
||
|
|
#include <flags.hpp>
|
||
|
|
|
||
|
|
#include "inject.hpp"
|
||
|
|
|
||
|
|
using namespace std;
|
||
|
|
|
||
|
|
// Static vector won't work, use a pointer instead
|
||
|
|
static vector<tuple<const char *, const char *, void **>> *hook_list;
|
||
|
|
|
||
|
|
#define DEF_HOOK_FUNC(ret, func, ...) \
|
||
|
|
static ret (*old_##func)(__VA_ARGS__); \
|
||
|
|
static ret new_##func(__VA_ARGS__)
|
||
|
|
|
||
|
|
DEF_HOOK_FUNC(int, jniRegisterNativeMethods,
|
||
|
|
JNIEnv *env, const char *className, const JNINativeMethod *methods, int numMethods) {
|
||
|
|
LOGD("hook: jniRegisterNativeMethods %s", className);
|
||
|
|
|
||
|
|
// TODO: actually do things like replacing JNI native methods
|
||
|
|
|
||
|
|
return old_jniRegisterNativeMethods(env, className, methods, numMethods);
|
||
|
|
}
|
||
|
|
|
||
|
|
static bool hook_refresh() {
|
||
|
|
if (xhook_refresh(0) == 0) {
|
||
|
|
xhook_clear();
|
||
|
|
LOGI("hook: xhook success\n");
|
||
|
|
return true;
|
||
|
|
} else {
|
||
|
|
LOGE("hook: xhook failed\n");
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static int hook_register(const char *path, const char *symbol, void *new_func, void **old_func) {
|
||
|
|
int ret = xhook_register(path, symbol, new_func, old_func);
|
||
|
|
if (ret != 0) {
|
||
|
|
LOGE("hook: Failed to register hook \"%s\"\n", symbol);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
hook_list->emplace_back(path, symbol, old_func);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
#define XHOOK_REGISTER(PATH_REGEX, NAME) \
|
||
|
|
hook_register(PATH_REGEX, #NAME, (void*) new_##NAME, (void **) &old_##NAME)
|
||
|
|
|
||
|
|
void hook_functions() {
|
||
|
|
#ifdef MAGISK_DEBUG
|
||
|
|
xhook_enable_debug(1);
|
||
|
|
xhook_enable_sigsegv_protection(0);
|
||
|
|
#endif
|
||
|
|
hook_list = new remove_pointer_t<decltype(hook_list)>();
|
||
|
|
XHOOK_REGISTER(".*\\libandroid_runtime.so$", jniRegisterNativeMethods);
|
||
|
|
hook_refresh();
|
||
|
|
}
|
||
|
|
|
||
|
|
bool unhook_functions() {
|
||
|
|
for (auto &[path, sym, old_func] : *hook_list) {
|
||
|
|
if (xhook_register(path, sym, *old_func, nullptr) != 0) {
|
||
|
|
LOGE("hook: Failed to register hook \"%s\"\n", sym); \
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
delete hook_list;
|
||
|
|
return hook_refresh();
|
||
|
|
}
|