Add AStorageManager API to NDK

AStorageManager allows users of the NDK to access OBBs for now.

Change-Id: I8a25757901a175aa90a9f3e8c2a5db7873e8615e

native/android/Android.mk

@@ -12,7 +12,8 @@ LOCAL_SRC_FILES:= \
     looper.cpp \
     native_activity.cpp \
     native_window.cpp \
-    sensor.cpp
+    sensor.cpp \
+    storage_manager.cpp
 
 LOCAL_SHARED_LIBRARIES := \
     libcutils \
@@ -23,6 +24,9 @@ LOCAL_SHARED_LIBRARIES := \
     libsurfaceflinger_client \
     libandroid_runtime
 
+LOCAL_STATIC_LIBRARIES := \
+    libstorage
+
 LOCAL_C_INCLUDES += \
     frameworks/base/native/include \
     frameworks/base/core/jni/android \

native/android/storage_manager.cpp

@@ -0,0 +1,141 @@
+/*
+ * 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.
+ */
+
+#define LOG_TAG "NStorage"
+
+#include <android/storage_manager.h>
+#include <storage/IMountService.h>
+
+#include <binder/Binder.h>
+#include <binder/IServiceManager.h>
+#include <utils/Log.h>
+#include <utils/RefBase.h>
+#include <utils/String8.h>
+#include <utils/String16.h>
+
+
+using namespace android;
+
+struct ObbActionListener : public BnObbActionListener {
+private:
+    sp<AStorageManager> mStorageManager;
+
+public:
+    ObbActionListener(AStorageManager* mgr) :
+            mStorageManager(mgr)
+    {}
+
+    virtual void onObbResult(const android::String16& filename, const android::String16& state) {
+        LOGD("Got obb result (%s, %s)\n", String8(filename).string(), String8(state).string());
+    }
+};
+
+struct AStorageManager : public RefBase {
+protected:
+    void* mObbCallback;
+    sp<ObbActionListener> mObbActionListener;
+    sp<IMountService> mMountService;
+
+public:
+    AStorageManager() :
+            mObbCallback(NULL)
+    {
+    }
+
+    bool initialize() {
+        sp<IServiceManager> sm = defaultServiceManager();
+        if (sm == NULL) {
+            LOGE("Couldn't get default ServiceManager\n");
+            return false;
+        }
+
+        mMountService = interface_cast<IMountService>(sm->getService(String16("mount")));
+        if (mMountService == NULL) {
+            LOGE("Couldn't get connection to MountService\n");
+            return false;
+        }
+
+        mObbActionListener = new ObbActionListener(this);
+
+        return true;
+    }
+
+    void setObbCallback(void* cb) {
+        mObbCallback = cb;
+    }
+
+    void mountObb(const char* filename, const char* key) {
+        String16 filename16(filename);
+        String16 key16(key);
+        mMountService->mountObb(filename16, key16, mObbActionListener);
+    }
+
+    void unmountObb(const char* filename, const bool force) {
+        String16 filename16(filename);
+        mMountService->unmountObb(filename16, force);
+    }
+
+    int isObbMounted(const char* filename) {
+        String16 filename16(filename);
+        return mMountService->isObbMounted(filename16);
+    }
+
+    const char* getMountedObbPath(const char* filename) {
+        String16 filename16(filename);
+        String16 path16;
+        if (mMountService->getMountedObbPath(filename16, path16)) {
+            return String8(path16).string();
+        } else {
+            return NULL;
+        }
+    }
+};
+
+
+AStorageManager* AStorageManager_new() {
+    sp<AStorageManager> mgr = new AStorageManager();
+    if (mgr == NULL || !mgr->initialize()) {
+        return NULL;
+    }
+    mgr->incStrong((void*)AStorageManager_new);
+    return static_cast<AStorageManager*>(mgr.get());
+}
+
+void AStorageManager_delete(AStorageManager* mgr) {
+    if (mgr) {
+        mgr->decStrong((void*)AStorageManager_new);
+    }
+}
+
+void AStorageManager_setObbCallback(AStorageManager* mgr, void* cb) {
+    mgr->setObbCallback(cb);
+}
+
+void AStorageManager_mountObb(AStorageManager* mgr, const char* filename, const char* key) {
+    mgr->mountObb(filename, key);
+}
+
+void AStorageManager_unmountObb(AStorageManager* mgr, const char* filename, const int force) {
+    mgr->unmountObb(filename, force != 0);
+}
+
+int AStorageManager_isObbMounted(AStorageManager* mgr, const char* filename) {
+    return mgr->isObbMounted(filename) != 0;
+}
+
+const char* AStorageManager_getMountedObbPath(AStorageManager* mgr, const char* filename) {
+    return mgr->getMountedObbPath(filename);
+}

native/include/android/storage_manager.h

@@ -0,0 +1,69 @@
+/*
+ * 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.
+ */
+
+
+#ifndef ANDROID_STORAGE_MANAGER_H
+#define ANDROID_STORAGE_MANAGER_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct AStorageManager;
+typedef struct AStorageManager AStorageManager;
+
+
+/**
+ * Obtains a new instance of AStorageManager.
+ */
+AStorageManager* AStorageManager_new();
+
+/**
+ * Release AStorageManager instance.
+ */
+void AStorageManager_delete(AStorageManager* mgr);
+
+/**
+ * Callback to call when requested OBB is complete.
+ */
+void AStorageManager_setObbCallback(AStorageManager* mgr, void* cb);
+
+/**
+ * Attempts to mount an OBB file.
+ */
+void AStorageManager_mountObb(AStorageManager* mgr, const char* filename, const char* key);
+
+/**
+ * Attempts to unmount an OBB file.
+ */
+void AStorageManager_unmountObb(AStorageManager* mgr, const char* filename, const int force);
+
+/**
+ * Check whether an OBB is mounted.
+ */
+int AStorageManager_isObbMounted(AStorageManager* mgr, const char* filename);
+
+/**
+ * Get the mounted path for an OBB.
+ */
+const char* AStorageManager_getMountedObbPath(AStorageManager* mgr, const char* filename);
+
+
+#ifdef __cplusplus
+};
+#endif
+
+#endif      // ANDROID_PACKAGE_MANAGER_H