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mojo/shell/android/android_handler.cc

Index: mojo/shell/android/android_handler.cc
diff --git a/mojo/shell/android/android_handler.cc b/mojo/shell/android/android_handler.cc
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+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "mojo/shell/android/android_handler.h"
+
+#include "base/android/jni_android.h"
+#include "base/android/jni_string.h"
+#include "base/files/file_path.h"
+#include "base/logging.h"
+#include "base/scoped_native_library.h"
+#include "jni/AndroidHandler_jni.h"
+#include "mojo/common/data_pipe_utils.h"
+#include "mojo/public/c/system/main.h"
+#include "mojo/public/cpp/application/application_impl.h"
+#include "mojo/shell/android/run_android_application_function.h"
+#include "mojo/shell/native_application_support.h"
+
+using base::android::AttachCurrentThread;
+using base::android::ScopedJavaLocalRef;
+using base::android::ConvertJavaStringToUTF8;
+using base::android::ConvertUTF8ToJavaString;
+using base::android::GetApplicationContext;
+
+namespace mojo {
+namespace shell {
+
+namespace {
+
+// This function loads the application library, sets the application context and
+// thunks and calls into the application MojoMain. To ensure that the thunks are
+// set correctly we keep it in the Mojo shell .so and pass the function pointer
+// to the helper libbootstrap.so.
+void RunAndroidApplication(JNIEnv* env,
+                           jobject j_context,
+                           const base::FilePath& app_path,
+                           jint j_handle) {
+  InterfaceRequest<Application> application_request =
+      MakeRequest<Application>(MakeScopedHandle(MessagePipeHandle(j_handle)));
+
+  // Load the library, so that we can set the application context there if
+  // needed.
+  // TODO(vtl): We'd use a ScopedNativeLibrary, but it doesn't have .get()!
+  base::NativeLibrary app_library =
+      LoadNativeApplication(app_path, NativeApplicationCleanup::DELETE);
+  if (!app_library)
+    return;
+
+  // Set the application context if needed. Most applications will need to
+  // access the Android ApplicationContext in which they are run. If the
+  // application library exports the InitApplicationContext function, we will
+  // set it there.
+  const char* init_application_context_name = "InitApplicationContext";
+  typedef void (*InitApplicationContextFn)(
+      const base::android::JavaRef<jobject>&);
+  InitApplicationContextFn init_application_context =
+      reinterpret_cast<InitApplicationContextFn>(
+          base::GetFunctionPointerFromNativeLibrary(
+              app_library, init_application_context_name));
+  if (init_application_context) {
+    base::android::ScopedJavaLocalRef<jobject> scoped_context(env, j_context);
+    init_application_context(scoped_context);
+  }
+
+  // Run the application.
+  RunNativeApplication(app_library, application_request.Pass());
+  // TODO(vtl): See note about unloading and thread-local destructors above
+  // declaration of |LoadNativeApplication()|.
+  base::UnloadNativeLibrary(app_library);
+}
+
+}  // namespace
+
+AndroidHandler::AndroidHandler() : content_handler_factory_(this) {
+}
+
+AndroidHandler::~AndroidHandler() {
+}
+
+void AndroidHandler::RunApplication(
+    InterfaceRequest<Application> application_request,
+    URLResponsePtr response) {
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jstring> j_archive_path =
+      Java_AndroidHandler_getNewTempArchivePath(env, GetApplicationContext());
+  base::FilePath archive_path(
+      ConvertJavaStringToUTF8(env, j_archive_path.obj()));
+
+  common::BlockingCopyToFile(response->body.Pass(), archive_path);
+  RunAndroidApplicationFn run_android_application_fn = &RunAndroidApplication;
+  Java_AndroidHandler_bootstrap(
+      env, GetApplicationContext(), j_archive_path.obj(),
+      application_request.PassMessagePipe().release().value(),
+      reinterpret_cast<jlong>(run_android_application_fn));
+}
+
+void AndroidHandler::Initialize(ApplicationImpl* app) {
+}
+
+bool AndroidHandler::ConfigureIncomingConnection(
+    ApplicationConnection* connection) {
+  connection->AddService(&content_handler_factory_);
+  return true;
+}
+
+bool RegisterAndroidHandlerJni(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+}  // namespace shell
+}  // namespace mojo