| /* |
| * Copyright 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 "ObbScanner" |
| |
| #include <utils/Log.h> |
| #include <utils/String8.h> |
| #include <androidfw/ObbFile.h> |
| |
| #include "jni.h" |
| #include "JNIHelp.h" |
| #include "utils/misc.h" |
| #include "android_runtime/AndroidRuntime.h" |
| |
| #include "core_jni_helpers.h" |
| |
| namespace android { |
| |
| static struct { |
| jclass clazz; |
| |
| jfieldID packageName; |
| jfieldID version; |
| jfieldID flags; |
| jfieldID salt; |
| } gObbInfoClassInfo; |
| |
| static void android_content_res_ObbScanner_getObbInfo(JNIEnv* env, jobject clazz, jstring file, |
| jobject obbInfo) |
| { |
| const char* filePath = env->GetStringUTFChars(file, NULL); |
| |
| sp<ObbFile> obb = new ObbFile(); |
| if (!obb->readFrom(filePath)) { |
| env->ReleaseStringUTFChars(file, filePath); |
| jniThrowException(env, "java/io/IOException", "Could not read OBB file"); |
| return; |
| } |
| |
| env->ReleaseStringUTFChars(file, filePath); |
| |
| const char* packageNameStr = obb->getPackageName().string(); |
| |
| jstring packageName = env->NewStringUTF(packageNameStr); |
| if (packageName == NULL) { |
| jniThrowException(env, "java/io/IOException", "Could not read OBB file"); |
| return; |
| } |
| |
| env->SetObjectField(obbInfo, gObbInfoClassInfo.packageName, packageName); |
| env->SetIntField(obbInfo, gObbInfoClassInfo.version, obb->getVersion()); |
| env->SetIntField(obbInfo, gObbInfoClassInfo.flags, obb->getFlags()); |
| |
| size_t saltLen; |
| const unsigned char* salt = obb->getSalt(&saltLen); |
| if (saltLen > 0) { |
| jbyteArray saltArray = env->NewByteArray(saltLen); |
| env->SetByteArrayRegion(saltArray, 0, saltLen, (jbyte*)salt); |
| env->SetObjectField(obbInfo, gObbInfoClassInfo.salt, saltArray); |
| } |
| } |
| |
| /* |
| * JNI registration. |
| */ |
| static JNINativeMethod gMethods[] = { |
| /* name, signature, funcPtr */ |
| { "getObbInfo_native", "(Ljava/lang/String;Landroid/content/res/ObbInfo;)V", |
| (void*) android_content_res_ObbScanner_getObbInfo }, |
| }; |
| |
| int register_android_content_res_ObbScanner(JNIEnv* env) |
| { |
| jclass clazz = FindClassOrDie(env, "android/content/res/ObbInfo"); |
| |
| gObbInfoClassInfo.packageName = GetFieldIDOrDie(env, clazz, "packageName", |
| "Ljava/lang/String;"); |
| gObbInfoClassInfo.version = GetFieldIDOrDie(env, clazz, "version", "I"); |
| gObbInfoClassInfo.flags = GetFieldIDOrDie(env, clazz, "flags", "I"); |
| gObbInfoClassInfo.salt = GetFieldIDOrDie(env, clazz, "salt", "[B"); |
| |
| return RegisterMethodsOrDie(env, "android/content/res/ObbScanner", gMethods, NELEM(gMethods)); |
| } |
| |
| }; // namespace android |