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#include "gd_mono_android.h"
#if defined(ANDROID_ENABLED)
#include <dlfcn.h> // dlopen, dlsym
#include <mono/utils/mono-dl-fallback.h>
#include "core/os/os.h"
#include "core/ustring.h"
#include "platform/android/thread_jandroid.h"
#include "../utils/path_utils.h"
#include "../utils/string_utils.h"
namespace GDMonoAndroid {
String app_native_lib_dir_cache;
String determine_app_native_lib_dir() {
JNIEnv *env = ThreadAndroid::get_env();
jclass activityThreadClass = env->FindClass("android/app/ActivityThread");
jmethodID currentActivityThread = env->GetStaticMethodID(activityThreadClass, "currentActivityThread", "()Landroid/app/ActivityThread;");
jobject activityThread = env->CallStaticObjectMethod(activityThreadClass, currentActivityThread);
jmethodID getApplication = env->GetMethodID(activityThreadClass, "getApplication", "()Landroid/app/Application;");
jobject ctx = env->CallObjectMethod(activityThread, getApplication);
jmethodID getApplicationInfo = env->GetMethodID(env->GetObjectClass(ctx), "getApplicationInfo", "()Landroid/content/pm/ApplicationInfo;");
jobject applicationInfo = env->CallObjectMethod(ctx, getApplicationInfo);
jfieldID nativeLibraryDirField = env->GetFieldID(env->GetObjectClass(applicationInfo), "nativeLibraryDir", "Ljava/lang/String;");
jstring nativeLibraryDir = (jstring)env->GetObjectField(applicationInfo, nativeLibraryDirField);
String result;
const char *const nativeLibraryDir_utf8 = env->GetStringUTFChars(nativeLibraryDir, NULL);
if (nativeLibraryDir_utf8) {
result.parse_utf8(nativeLibraryDir_utf8);
env->ReleaseStringUTFChars(nativeLibraryDir, nativeLibraryDir_utf8);
}
return result;
}
String get_app_native_lib_dir() {
if (app_native_lib_dir_cache.empty())
app_native_lib_dir_cache = determine_app_native_lib_dir();
return app_native_lib_dir_cache;
}
int gd_mono_convert_dl_flags(int flags) {
// from mono's runtime-bootstrap.c
int lflags = flags & MONO_DL_LOCAL ? 0 : RTLD_GLOBAL;
if (flags & MONO_DL_LAZY)
lflags |= RTLD_LAZY;
else
lflags |= RTLD_NOW;
return lflags;
}
void *gd_mono_android_dlopen(const char *p_name, int p_flags, char **r_err, void *p_user_data) {
String name = String::utf8(p_name);
if (name.ends_with(".dll.so") || name.ends_with(".exe.so")) {
String app_native_lib_dir = get_app_native_lib_dir();
String orig_so_name = name.get_file();
String so_name = "lib-aot-" + orig_so_name;
String so_path = path::join(app_native_lib_dir, so_name);
if (!FileAccess::exists(so_path)) {
if (OS::get_singleton()->is_stdout_verbose())
OS::get_singleton()->print("Cannot find shared library: '%s'\n", so_path.utf8().get_data());
return NULL;
}
int lflags = gd_mono_convert_dl_flags(p_flags);
void *handle = dlopen(so_path.utf8().get_data(), lflags);
if (!handle) {
if (OS::get_singleton()->is_stdout_verbose())
OS::get_singleton()->print("Failed to open shared library: '%s'. Error: '%s'\n", so_path.utf8().get_data(), dlerror());
return NULL;
}
if (OS::get_singleton()->is_stdout_verbose())
OS::get_singleton()->print("Successfully loaded AOT shared library: '%s'\n", so_path.utf8().get_data());
return handle;
}
return NULL;
}
void *gd_mono_android_dlsym(void *p_handle, const char *p_name, char **r_err, void *p_user_data) {
void *sym_addr = dlsym(p_handle, p_name);
if (sym_addr)
return sym_addr;
if (r_err)
*r_err = str_format_new("%s\n", dlerror());
return NULL;
}
void register_android_dl_fallback() {
mono_dl_fallback_register(gd_mono_android_dlopen, gd_mono_android_dlsym, NULL, NULL);
}
} // namespace GDMonoAndroid
#endif
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