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https://gitlab.com/android_translation_layer/android_translation_layer.git
synced 2025-10-27 11:48:10 -07:00
move entry point to C, bypass dalvik executable by directly linking against libdvm.so
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Mis012
251
src/main.c
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251
src/main.c
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@@ -0,0 +1,251 @@
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#include <gtk/gtk.h>
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#include "../jni/defines.h"
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#include "../jni/util.h"
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#include "../jni/org_launch_main.h"
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#include "../jni/android_app_Activity.h"
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#include <dlfcn.h>
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GtkWidget *window;
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// standard Gtk Application stuff, more or less
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gboolean app_exit(GtkWindow* self, JNIEnv *env) // TODO: do more cleanup?
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{
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/* -- run the main activity's onDestroy -- */
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(*env)->CallVoidMethod(env, handle_cache.apk_main_activity.object, handle_cache.apk_main_activity.onDestroy, NULL);
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return false;
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}
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// FIXME: used by hacks in GLSurfaceView
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int FIXME__WIDTH;
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int FIXME__HEIGHT;
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char *construct_classpath(char *prefix, char *path_to_prepend, char **cp_array, size_t len)
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{
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size_t result_len = strlen(prefix);
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for(int i = 0; i < len; i++) {
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result_len += strlen(path_to_prepend) + strlen(cp_array[i]) + 1; // the 1 is for either : or the final \0
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}
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char *result = malloc(result_len);
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strcpy(result, prefix);
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for(int i = 0; i < len; i++) {
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strcat(result, path_to_prepend);
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strcat(result, cp_array[i]);
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if (i < (len - 1))
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strcat(result, ":");
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}
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return result;
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}
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char *construct_boot_classpath(char *prefix, char **cp_array, size_t len)
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{
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char *android_root_path = getenv("ANDROID_ROOT");
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char *framework_dir = "/framework/";
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char *framework_dir_path = malloc(strlen(android_root_path) + strlen(framework_dir) + 1);
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strcpy(framework_dir_path, android_root_path);
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strcat(framework_dir_path, framework_dir);
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char *result = construct_classpath(prefix, framework_dir_path, cp_array, len);
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free(framework_dir_path);
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return result;
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}
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JNIEnv* create_vm(char *apk_classpath) {
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JavaVM* jvm;
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JNIEnv* env;
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JavaVMInitArgs args;
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JavaVMOption options[3];
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args.version = JNI_VERSION_1_6;
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args.nOptions = 3;
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// TODO: should probably not hardcode this
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char *boot_cp_arr[] = {
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"core-hostdex.jar",
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"core-junit-hostdex.jar",
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"conscrypt-hostdex.jar",
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"okhttp-hostdex.jar",
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"bouncycastle-hostdex.jar",
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"apachehttp-hostdex.jar",
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"apache-xml-hostdex.jar",
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};
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options[0].optionString = construct_boot_classpath("-Xbootclasspath:", boot_cp_arr, ARRAY_SIZE(boot_cp_arr));
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// or this
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char *cp_array[] = {
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".",
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"hax_arsc_parser.dex",
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"hax.dex",
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"%s",
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"com.google.android.gms.apk",
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};
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char *cp_format_str = construct_classpath("-Djava.class.path=", "", cp_array, ARRAY_SIZE(cp_array));
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size_t cp_len = strlen(cp_format_str) - strlen("%s") + strlen(apk_classpath) + 1;
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options[1].optionString = malloc(cp_len);
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snprintf(options[1].optionString, cp_len, cp_format_str, apk_classpath);
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options[2].optionString = "-verbose:jni";
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args.options = options;
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args.ignoreUnrecognized = JNI_FALSE;
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int ret = JNI_CreateJavaVM(&jvm, (void **)&env, &args);
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if (ret<0){
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printf("Unable to Launch JVM\n");
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} else {
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printf("JVM launched successfully\n");
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}
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return env;
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}
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bool _Z17dvmLoadNativeCodePKcP6ObjectPPc(const char* pathName, void* classLoader, char** detail);
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void * _Z20dvmDecodeIndirectRefP6ThreadP8_jobject(void* self, jobject jobj);
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void * _Z13dvmThreadSelfv(void);
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struct jni_callback_data { char *apk_main_activity_class; uint32_t window_width; uint32_t window_height;};
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static void open(GtkApplication *app, GFile** files, gint nfiles, const gchar* hint, struct jni_callback_data *d)
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{
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//TODO: pass all files to classpath
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/*
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printf("nfiles: %d\n", nfiles);
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for(int i = 0; i < nfiles; i++) {
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printf(">- [%s]\n", g_file_get_path(files[i]));
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}
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*/
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char *apk_classpath = g_file_get_path(files[0]);
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if(apk_classpath == NULL) {
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printf("error: the specified file path doesn't seem to be valid\n");
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exit(1);
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}
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JNIEnv* env = create_vm(apk_classpath);
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if(!d->apk_main_activity_class) {
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printf("error: missing required option --launch-activity <activity>.\nyou can specify --help to see the list of options\n");
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exit(1);
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}
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set_up_handle_cache(env, d->apk_main_activity_class);
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jclass display_class = (*env)->FindClass(env, "android/view/Display");
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_SET_STATIC_INT_FIELD(display_class, "window_width", d->window_width);
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_SET_STATIC_INT_FIELD(display_class, "window_height", d->window_height);
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FIXME__WIDTH = d->window_width;
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FIXME__HEIGHT = d->window_height;
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window = gtk_application_window_new (app);
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(*env)->CallVoidMethod(env, handle_cache.apk_main_activity.object, handle_cache.apk_main_activity.set_window, _INTPTR(window));
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if((*env)->ExceptionCheck(env))
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(*env)->ExceptionDescribe(env);
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gtk_window_set_title(GTK_WINDOW(window), "com.example.demo_application");
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gtk_window_set_default_size(GTK_WINDOW(window), d->window_width, d->window_height);
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g_signal_connect(window, "close-request", G_CALLBACK (app_exit), env);
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// TODO: set icon according to how android gets it for the purposes of displaying it in the launcher
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// gtk_window_set_icon_name(window, "weather-clear");
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gtk_widget_show(window);
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/* -- register our JNI library under the appropriate classloader -- */
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/* 'android/view/View' is part of the "hax.dex" package, any other function from that package would serve just as well */
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jmethodID getClassLoader = _METHOD((*env)->FindClass(env, "java/lang/Class"), "getClassLoader", "()Ljava/lang/ClassLoader;");
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jobject class_loader = (*env)->CallObjectMethod(env, handle_cache.view.class, getClassLoader);
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char* reason = NULL;
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if (!_Z17dvmLoadNativeCodePKcP6ObjectPPc("libtranslation_layer_main.so", _Z20dvmDecodeIndirectRefP6ThreadP8_jobject(_Z13dvmThreadSelfv(), class_loader), &reason)) {
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printf("[main] dvmLoadNativeCode failed for libtranslation_layer_main.so: %s", reason);
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exit(1);
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}
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/* -- run the main activity's onCreate -- */
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(*env)->CallVoidMethod(env, handle_cache.apk_main_activity.object, handle_cache.apk_main_activity.onCreate, NULL);
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if((*env)->ExceptionCheck(env))
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(*env)->ExceptionDescribe(env);
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// TODO: some apps wait for this to actually do stuff
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/* (*env)->CallVoidMethod(env, handle_cache.apk_main_activity.object, handle_cache.apk_main_activity.onWindowFocusChanged, true);
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if((*env)->ExceptionCheck(env))
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(*env)->ExceptionDescribe(env);*/
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}
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static void activate(GtkApplication *app, struct jni_callback_data *d)
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{
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printf("error: usage: ./main [app.apk] [path/to/activity]\nyou can specify --help to see the list of options\n");
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exit(1);
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}
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void init_cmd_parameters(GApplication *app, struct jni_callback_data *d)
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{
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const GOptionEntry cmd_params[] =
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{
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{
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.long_name = "launch-activity",
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.short_name = 'l',
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.flags = G_OPTION_FLAG_NONE,
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.arg = G_OPTION_ARG_STRING,
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.arg_data = &d->apk_main_activity_class,
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.description = "the fully quilifed name of the activity you wish to launch (usually the apk's main activity)",
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.arg_description = NULL,
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},
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{
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.long_name = "window-width",
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.short_name = 'w',
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.flags = G_OPTION_FLAG_NONE,
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.arg = G_OPTION_ARG_INT,
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.arg_data = &d->window_width,
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.description = "window width to launch with (some apps react poorly to runtime window size adjustments)",
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.arg_description = NULL,
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},
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{
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.long_name = "window-height",
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.short_name = 'h',
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.flags = G_OPTION_FLAG_NONE,
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.arg = G_OPTION_ARG_INT,
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.arg_data = &d->window_height,
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.description = "window height to launch with (some apps react poorly to runtime window size adjustments)",
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.arg_description = NULL,
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},
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{NULL}
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};
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g_application_add_main_option_entries (G_APPLICATION (app), cmd_params);
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}
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int main(int argc, char **argv/*, JNIEnv *env*/)
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{
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GtkApplication *app;
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int status;
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struct jni_callback_data *callback_data = malloc(sizeof(struct jni_callback_data));
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callback_data->apk_main_activity_class = NULL;
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callback_data->window_width = 960;
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callback_data->window_height = 540;
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app = gtk_application_new("com.example.demo_application", G_APPLICATION_NON_UNIQUE | G_APPLICATION_HANDLES_OPEN);
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// cmdline related setup
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init_cmd_parameters(G_APPLICATION(app), callback_data);
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g_application_set_option_context_summary(G_APPLICATION(app), "actual usage:\nLD_PRELOAD=libpthread_bio.so ./dalvik/dalvik -verbose:jni -cp hax_arsc_parser.dex:hax_xmlpull.dex:hax.dex:main.dex:${1}:com.google.android.gms.apk org/launch/main ${2}\nwhere ${1} is the path to the apk and ${2} is the cmdline");
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g_signal_connect(app, "activate", G_CALLBACK (activate), callback_data);
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g_signal_connect(app, "open", G_CALLBACK (open), callback_data);
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status = g_application_run(G_APPLICATION(app), argc, argv);
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g_object_unref(app);
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return status;
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}
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const char dl_loader[] __attribute__((section(".interp"))) =
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"/lib/ld-linux.so.2";
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