| /* |
| * 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. |
| */ |
| |
| package android.webkit; |
| |
| import android.app.ActivityManager; |
| import android.content.Context; |
| import android.net.Uri; |
| import android.provider.Settings; |
| import android.util.Log; |
| |
| import java.io.File; |
| import java.io.InputStream; |
| |
| class JniUtil { |
| |
| static { |
| System.loadLibrary("webcore"); |
| System.loadLibrary("chromium_net"); |
| } |
| private static final String LOGTAG = "webkit"; |
| private JniUtil() {} // Utility class, do not instantiate. |
| |
| // Used by the Chromium HTTP stack. |
| private static String sDatabaseDirectory; |
| private static String sCacheDirectory; |
| private static Context sContext; |
| |
| private static void checkInitialized() { |
| if (sContext == null) { |
| throw new IllegalStateException("Call CookieSyncManager::createInstance() or create a webview before using this class"); |
| } |
| } |
| |
| protected static synchronized void setContext(Context context) { |
| if (sContext != null) { |
| return; |
| } |
| |
| sContext = context.getApplicationContext(); |
| } |
| |
| protected static synchronized Context getContext() { |
| return sContext; |
| } |
| |
| /** |
| * Called by JNI. Gets the application's database directory, excluding the trailing slash. |
| * @return String The application's database directory |
| */ |
| private static synchronized String getDatabaseDirectory() { |
| checkInitialized(); |
| |
| if (sDatabaseDirectory == null) { |
| sDatabaseDirectory = sContext.getDatabasePath("dummy").getParent(); |
| } |
| |
| return sDatabaseDirectory; |
| } |
| |
| /** |
| * Called by JNI. Gets the application's cache directory, excluding the trailing slash. |
| * @return String The application's cache directory |
| */ |
| private static synchronized String getCacheDirectory() { |
| checkInitialized(); |
| |
| if (sCacheDirectory == null) { |
| File cacheDir = sContext.getCacheDir(); |
| if (cacheDir == null) { |
| sCacheDirectory = ""; |
| } else { |
| sCacheDirectory = cacheDir.getAbsolutePath(); |
| } |
| } |
| |
| return sCacheDirectory; |
| } |
| |
| /** |
| * Called by JNI. Gets the application's package name. |
| * @return String The application's package name |
| */ |
| private static synchronized String getPackageName() { |
| checkInitialized(); |
| |
| return sContext.getPackageName(); |
| } |
| |
| private static final String ANDROID_CONTENT = "content:"; |
| |
| /** |
| * Called by JNI. Calculates the size of an input stream by reading it. |
| * @return long The size of the stream |
| */ |
| private static synchronized long contentUrlSize(String url) { |
| // content:// |
| if (url.startsWith(ANDROID_CONTENT)) { |
| try { |
| // Strip off MIME type. If we don't do this, we can fail to |
| // load Gmail attachments, because the URL being loaded doesn't |
| // exactly match the URL we have permission to read. |
| int mimeIndex = url.lastIndexOf('?'); |
| if (mimeIndex != -1) { |
| url = url.substring(0, mimeIndex); |
| } |
| Uri uri = Uri.parse(url); |
| InputStream is = sContext.getContentResolver().openInputStream(uri); |
| byte[] buffer = new byte[1024]; |
| int n; |
| long size = 0; |
| try { |
| while ((n = is.read(buffer)) != -1) { |
| size += n; |
| } |
| } finally { |
| is.close(); |
| } |
| return size; |
| } catch (Exception e) { |
| Log.e(LOGTAG, "Exception: " + url); |
| return 0; |
| } |
| } else { |
| return 0; |
| } |
| } |
| |
| /** |
| * Called by JNI. |
| * |
| * @return Opened input stream to content |
| * TODO: Make all content loading use this instead of BrowserFrame.java |
| */ |
| private static synchronized InputStream contentUrlStream(String url) { |
| // content:// |
| if (url.startsWith(ANDROID_CONTENT)) { |
| try { |
| // Strip off mimetype, for compatibility with ContentLoader.java |
| // (used with Android HTTP stack, now removed). |
| // If we don't do this, we can fail to load Gmail attachments, |
| // because the URL being loaded doesn't exactly match the URL we |
| // have permission to read. |
| int mimeIndex = url.lastIndexOf('?'); |
| if (mimeIndex != -1) { |
| url = url.substring(0, mimeIndex); |
| } |
| Uri uri = Uri.parse(url); |
| return sContext.getContentResolver().openInputStream(uri); |
| } catch (Exception e) { |
| Log.e(LOGTAG, "Exception: " + url); |
| return null; |
| } |
| } else { |
| return null; |
| } |
| } |
| |
| private static synchronized String getAutofillQueryUrl() { |
| checkInitialized(); |
| // If the device has not checked in it won't have pulled down the system setting for the |
| // Autofill Url. In that case we will not make autofill server requests. |
| return Settings.Secure.getString(sContext.getContentResolver(), |
| Settings.Secure.WEB_AUTOFILL_QUERY_URL); |
| } |
| |
| private static boolean canSatisfyMemoryAllocation(long bytesRequested) { |
| checkInitialized(); |
| ActivityManager manager = (ActivityManager) sContext.getSystemService( |
| Context.ACTIVITY_SERVICE); |
| ActivityManager.MemoryInfo memInfo = new ActivityManager.MemoryInfo(); |
| manager.getMemoryInfo(memInfo); |
| long leftToAllocate = memInfo.availMem - memInfo.threshold; |
| return !memInfo.lowMemory && bytesRequested < leftToAllocate; |
| } |
| } |