termux · nokotan · Oct 28, 2020
diff --git a/app/build.gradle b/app/build.gradle
@@ -11,6 +11,7 @@ android {
         implementation "androidx.viewpager:viewpager:1.0.0"
         implementation "androidx.drawerlayout:drawerlayout:1.1.0"
         implementation project(":terminal-view")
+        implementation project(":native-entrypoint")
     }
 
     defaultConfig {

diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
@@ -94,6 +94,16 @@
             </intent-filter>
         </activity>
 
+        <activity android:name="android.app.NativeActivity" android:configChanges="orientation|screenSize">
+            <!-- Tell NativeActivity the name of our .so -->
+            <meta-data android:name="android.app.lib_name" android:value="native-entrypoint"/>
+
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.DEFAULT"/>
+            </intent-filter>
+        </activity>
+
         <activity-alias
             android:name=".HomeActivity"
             android:targetActivity="com.termux.app.TermuxActivity">

diff --git a/native-entrypoint/.gitignore b/native-entrypoint/.gitignore
@@ -0,0 +1 @@
+/build
diff --git a/native-entrypoint/build.gradle b/native-entrypoint/build.gradle
@@ -0,0 +1,51 @@
+plugins {
+    id "com.jfrog.bintray" version "1.7.3"
+    id "com.github.dcendents.android-maven" version "2.0"
+}
+
+apply plugin: 'com.android.library'
+
+ext {
+    bintrayName = 'native-entrypoint'
+    publishedGroupId = 'com.termux'
+    libraryName = 'NativeEntryPoint'
+    artifact = 'native-entrypoint'
+    libraryDescription = 'The terminal view used in Termux'
+    siteUrl = 'https://github.com/termux/termux'
+    gitUrl = 'https://github.com/termux/termux.git'
+    libraryVersion = '0.50'
+}
+
+android {
+    compileSdkVersion project.properties.compileSdkVersion.toInteger()
+    ndkVersion project.properties.ndkVersion
+
+    dependencies {
+        implementation "androidx.annotation:annotation:1.1.0"
+    }
+
+    defaultConfig {
+        minSdkVersion project.properties.minSdkVersion.toInteger()
+        targetSdkVersion project.properties.targetSdkVersion.toInteger()
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+
+    externalNativeBuild {
+        ndkBuild {
+            path "src/main/jni/Android.mk"
+        }
+    }
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+apply from: '../scripts/bintray-publish.gradle'
diff --git a/native-entrypoint/proguard-rules.pro b/native-entrypoint/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
diff --git a/native-entrypoint/src/main/AndroidManifest.xml b/native-entrypoint/src/main/AndroidManifest.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.termux.myapplication">
+</manifest>
diff --git a/native-entrypoint/src/main/jni/Android.mk b/native-entrypoint/src/main/jni/Android.mk
@@ -0,0 +1,6 @@
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+LOCAL_MODULE:= libnative-entrypoint
+LOCAL_SRC_FILES:= main.cpp
+LOCAL_LDLIBS:= -llog -landroid -ldl
+include $(BUILD_SHARED_LIBRARY)
diff --git a/native-entrypoint/src/main/jni/main.cpp b/native-entrypoint/src/main/jni/main.cpp
@@ -0,0 +1,85 @@
+#include <stdint.h>
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+//BEGIN_INCLUDE(all)
+#include <dlfcn.h>
+#include <stdio.h>
+
+#include <android/native_activity.h>
+#include <android/log.h>
+
+#define LOGI(...) ((void)__android_log_print(ANDROID_LOG_INFO, "native-activity", __VA_ARGS__))
+#define LOGW(...) ((void)__android_log_print(ANDROID_LOG_WARN, "native-activity", __VA_ARGS__))
+
+jstring ANativeActivity_getIntent(ANativeActivity* activity, const char* intentName) {
+    JNIEnv* env = activity->env;
+    jobject me = activity->clazz;
+
+    jclass acl = env->GetObjectClass(me); //class pointer of NativeActivity
+    jmethodID giid = env->GetMethodID(acl, "getIntent", "()Landroid/content/Intent;");
+    jobject intent = env->CallObjectMethod(me, giid); //Got our intent
+
+    jclass icl = env->GetObjectClass(intent); //class pointer of Intent
+    jmethodID gseid = env->GetMethodID(icl, "getStringExtra", "(Ljava/lang/String;)Ljava/lang/String;");
+
+    return (jstring)env->CallObjectMethod(intent, gseid, env->NewStringUTF(intentName));
+}
+
+void ANativeActivity_onCreate(ANativeActivity* activity, void* savedState, size_t savedStateSize) {
+    JNIEnv* env = activity->env;
+    jstring dylib_path = ANativeActivity_getIntent(activity, "DYLIB_PATH");
+
+    const char *path = env->GetStringUTFChars(dylib_path, 0);
+    void* handle = dlopen(path, RTLD_LAZY | RTLD_GLOBAL);
+
+    env->ReleaseStringUTFChars(dylib_path, path);
+
+    {
+        if (handle == NULL) {
+            char* errorText = dlerror();
+            LOGW("ERROR!!! %s\n", errorText);
+            printf("%s\n", errorText);
+            ANativeActivity_finish(activity);
+            return;
+        }
+
+        void* entryPoint = dlsym(handle, "ANativeActivity_onCreate");
+
+        if (entryPoint) {
+            LOGI("%s found.\n", "ANativeActivity_onCreate");
+        } else {
+            entryPoint = dlsym(handle, __func__);
+
+            if (entryPoint) {
+                LOGI("%s found.\n", __func__);
+            }
+        }
+
+        if (entryPoint) {
+            LOGI("calling main...\n");
+            (*(void(*)(ANativeActivity*, void*, size_t))entryPoint)(activity, savedState, savedStateSize);
+            LOGI("exited!...\n");
+        } else {
+            char* errorText = dlerror();
+            LOGW("ERROR!!! %s\n", errorText);
+            printf("%s\n", errorText);
+        }
+
+        dlclose(handle);
+    }
+}
diff --git a/settings.gradle b/settings.gradle
@@ -1 +1 @@
-include ':app', ':terminal-emulator', ':terminal-view'
+include ':app', ':terminal-emulator', ':terminal-view', ':native-entrypoint'
Original file line number	Diff line number	Diff line change
		@@ -1 +1 @@
		include ':app', ':terminal-emulator', ':terminal-view'
		include ':app', ':terminal-emulator', ':terminal-view', ':native-entrypoint'