/* * Copyright (C) 2008 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. */ package android.provider; import android.content.ContentResolver; import android.content.ContentValues; import android.content.Context; import android.drm.mobile1.DrmRawContent; import android.drm.mobile1.DrmRights; import android.drm.mobile1.DrmRightsManager; import android.content.Intent; import android.content.pm.PackageManager; import android.net.Uri; import android.util.Log; import java.io.File; import java.io.FileInputStream; import java.io.InputStream; import java.io.IOException; import java.io.OutputStream; /** * The DRM provider contains forward locked DRM content. * * @hide */ public final class DrmStore { private static final String TAG = "DrmStore"; public static final String AUTHORITY = "drm"; /** * This is in the Manifest class of the drm provider, but that isn't visible * in the framework. */ private static final String ACCESS_DRM_PERMISSION = "android.permission.ACCESS_DRM"; /** * Fields for DRM database */ public interface Columns extends BaseColumns { /** * The data stream for the file *

Type: DATA STREAM

*/ public static final String DATA = "_data"; /** * The size of the file in bytes *

Type: INTEGER (long)

*/ public static final String SIZE = "_size"; /** * The title of the file content *

Type: TEXT

*/ public static final String TITLE = "title"; /** * The MIME type of the file *

Type: TEXT

*/ public static final String MIME_TYPE = "mime_type"; } public interface Images extends Columns { public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/images"); } public interface Audio extends Columns { public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/audio"); } /** * Utility function for inserting a file into the DRM content provider. * * @param cr The content resolver to use * @param file The file to insert * @param title The title for the content (or null) * @return uri to the DRM record or null */ public static final Intent addDrmFile(ContentResolver cr, File file, String title) { FileInputStream fis = null; Intent result = null; try { fis = new FileInputStream(file); if (title == null) { title = file.getName(); int lastDot = title.lastIndexOf('.'); if (lastDot > 0) { title = title.substring(0, lastDot); } } result = addDrmFile(cr, fis, title); } catch (Exception e) { Log.e(TAG, "pushing file failed", e); } finally { try { if (fis != null) fis.close(); } catch (IOException e) { Log.e(TAG, "IOException in DrmStore.addDrmFile()", e); } } return result; } /** * Utility function for inserting a file stream into the DRM content provider. * * @param cr The content resolver to use * @param fis The FileInputStream to insert * @param title The title for the content (or null) * @return uri to the DRM record or null */ public static final Intent addDrmFile(ContentResolver cr, FileInputStream fis, String title) { OutputStream os = null; Intent result = null; try { DrmRawContent content = new DrmRawContent(fis, (int) fis.available(), DrmRawContent.DRM_MIMETYPE_MESSAGE_STRING); String mimeType = content.getContentType(); long size = fis.getChannel().size(); DrmRightsManager manager = manager = DrmRightsManager.getInstance(); DrmRights rights = manager.queryRights(content); InputStream stream = content.getContentInputStream(rights); Uri contentUri = null; if (mimeType.startsWith("audio/")) { contentUri = DrmStore.Audio.CONTENT_URI; } else if (mimeType.startsWith("image/")) { contentUri = DrmStore.Images.CONTENT_URI; } else { Log.w(TAG, "unsupported mime type " + mimeType); } if (contentUri != null) { ContentValues values = new ContentValues(3); values.put(DrmStore.Columns.TITLE, title); values.put(DrmStore.Columns.SIZE, size); values.put(DrmStore.Columns.MIME_TYPE, mimeType); Uri uri = cr.insert(contentUri, values); if (uri != null) { os = cr.openOutputStream(uri); byte[] buffer = new byte[1000]; int count; while ((count = stream.read(buffer)) != -1) { os.write(buffer, 0, count); } result = new Intent(); result.setDataAndType(uri, mimeType); } } } catch (Exception e) { Log.e(TAG, "pushing file failed", e); } finally { try { if (fis != null) fis.close(); if (os != null) os.close(); } catch (IOException e) { Log.e(TAG, "IOException in DrmStore.addDrmFile()", e); } } return result; } /** * Utility function to enforce any permissions required to access DRM * content. * * @param context A context used for checking calling permission. */ public static void enforceAccessDrmPermission(Context context) { if (context.checkCallingOrSelfPermission(ACCESS_DRM_PERMISSION) != PackageManager.PERMISSION_GRANTED) { throw new SecurityException("Requires DRM permission"); } } }