diff options
Diffstat (limited to 'src/com/android/providers/downloads/OpenHelper.java')
-rw-r--r-- | src/com/android/providers/downloads/OpenHelper.java | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/src/com/android/providers/downloads/OpenHelper.java b/src/com/android/providers/downloads/OpenHelper.java new file mode 100644 index 00000000..7eca95c9 --- /dev/null +++ b/src/com/android/providers/downloads/OpenHelper.java @@ -0,0 +1,125 @@ +/* + * Copyright (C) 2012 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 com.android.providers.downloads; + +import static android.app.DownloadManager.COLUMN_LOCAL_FILENAME; +import static android.app.DownloadManager.COLUMN_LOCAL_URI; +import static android.app.DownloadManager.COLUMN_MEDIA_TYPE; +import static android.app.DownloadManager.COLUMN_URI; +import static android.provider.Downloads.Impl.ALL_DOWNLOADS_CONTENT_URI; + +import android.app.DownloadManager; +import android.content.ContentUris; +import android.content.Context; +import android.content.Intent; +import android.database.Cursor; +import android.net.Uri; +import android.provider.Downloads.Impl.RequestHeaders; + +public class OpenHelper { + /** + * Build an {@link Intent} to view the download at current {@link Cursor} + * position, handling subtleties around installing packages. + */ + public static Intent buildViewIntent(Context context, long id) { + final DownloadManager downManager = (DownloadManager) context.getSystemService( + Context.DOWNLOAD_SERVICE); + downManager.setAccessAllDownloads(true); + + final Cursor cursor = downManager.query(new DownloadManager.Query().setFilterById(id)); + try { + if (!cursor.moveToFirst()) { + throw new IllegalArgumentException("Missing download " + id); + } + + final Uri localUri = getCursorUri(cursor, COLUMN_LOCAL_URI); + final String filename = getCursorString(cursor, COLUMN_LOCAL_FILENAME); + String mimeType = getCursorString(cursor, COLUMN_MEDIA_TYPE); + mimeType = DownloadDrmHelper.getOriginalMimeType(context, filename, mimeType); + + final Intent intent = new Intent(Intent.ACTION_VIEW); + intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); + + if ("application/vnd.android.package-archive".equals(mimeType)) { + // PackageInstaller doesn't like content URIs, so open file + intent.setDataAndType(localUri, mimeType); + + // Also splice in details about where it came from + final Uri remoteUri = getCursorUri(cursor, COLUMN_URI); + intent.putExtra(Intent.EXTRA_ORIGINATING_URI, remoteUri); + intent.putExtra(Intent.EXTRA_REFERRER, getRefererUri(context, id)); + intent.putExtra(Intent.EXTRA_ORIGINATING_UID, getOriginatingUid(context, id)); + } else if ("file".equals(localUri.getScheme())) { + intent.setDataAndType( + ContentUris.withAppendedId(ALL_DOWNLOADS_CONTENT_URI, id), mimeType); + } else { + intent.setDataAndType(localUri, mimeType); + } + + return intent; + } finally { + cursor.close(); + } + } + + private static Uri getRefererUri(Context context, long id) { + final Uri headersUri = Uri.withAppendedPath( + ContentUris.withAppendedId(ALL_DOWNLOADS_CONTENT_URI, id), + RequestHeaders.URI_SEGMENT); + final Cursor headers = context.getContentResolver() + .query(headersUri, null, null, null, null); + try { + while (headers.moveToNext()) { + final String header = getCursorString(headers, RequestHeaders.COLUMN_HEADER); + if ("Referer".equalsIgnoreCase(header)) { + return getCursorUri(headers, RequestHeaders.COLUMN_VALUE); + } + } + } finally { + headers.close(); + } + return null; + } + + private static int getOriginatingUid(Context context, long id) { + final Uri uri = ContentUris.withAppendedId(ALL_DOWNLOADS_CONTENT_URI, id); + final Cursor cursor = context.getContentResolver().query(uri, new String[]{Constants.UID}, + null, null, null); + if (cursor != null) { + try { + if (cursor.moveToFirst()) { + return cursor.getInt(cursor.getColumnIndexOrThrow(Constants.UID)); + } + } finally { + cursor.close(); + } + } + return -1; + } + + private static String getCursorString(Cursor cursor, String column) { + return cursor.getString(cursor.getColumnIndexOrThrow(column)); + } + + private static Uri getCursorUri(Cursor cursor, String column) { + return Uri.parse(getCursorString(cursor, column)); + } + + private static long getCursorLong(Cursor cursor, String column) { + return cursor.getLong(cursor.getColumnIndexOrThrow(column)); + } +} |