1 2 /* 3 * Copyright (C) 2011 The Android Open Source Project 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 package com.android.browser.homepages; 18 19 import android.content.ContentProvider; 20 import android.content.ContentValues; 21 import android.content.Context; 22 import android.content.res.AssetFileDescriptor; 23 import android.database.Cursor; 24 import android.net.Uri; 25 import android.os.ParcelFileDescriptor; 26 import android.util.Log; 27 import android.webkit.WebResourceResponse; 28 29 import com.android.browser.BrowserSettings; 30 31 import java.io.File; 32 import java.io.IOException; 33 import java.io.InputStream; 34 import java.io.PipedInputStream; 35 import java.io.PipedOutputStream; 36 37 public class HomeProvider extends ContentProvider { 38 39 private static final String TAG = "HomeProvider"; 40 public static final String AUTHORITY = "com.android.browser.home"; 41 public static final String MOST_VISITED = "content://" + AUTHORITY + "/"; 42 43 @Override 44 public int delete(Uri uri, String selection, String[] selectionArgs) { 45 return 0; 46 } 47 48 @Override 49 public String getType(Uri uri) { 50 return null; 51 } 52 53 @Override 54 public Uri insert(Uri uri, ContentValues values) { 55 return null; 56 } 57 58 @Override 59 public boolean onCreate() { 60 return false; 61 } 62 63 @Override 64 public Cursor query(Uri uri, String[] projection, String selection, 65 String[] selectionArgs, String sortOrder) { 66 return null; 67 } 68 69 @Override 70 public int update(Uri uri, ContentValues values, String selection, 71 String[] selectionArgs) { 72 return 0; 73 } 74 75 @Override 76 public ParcelFileDescriptor openFile(Uri uri, String mode) { 77 try { 78 ParcelFileDescriptor[] pipes = ParcelFileDescriptor.createPipe(); 79 final ParcelFileDescriptor write = pipes[1]; 80 AssetFileDescriptor afd = new AssetFileDescriptor(write, 0, -1); 81 new RequestHandler(getContext(), uri, afd.createOutputStream()).start(); 82 return pipes[0]; 83 } catch (IOException e) { 84 Log.e(TAG, "Failed to handle request: " + uri, e); 85 return null; 86 } 87 } 88 89 public static WebResourceResponse shouldInterceptRequest(Context context, 90 String url) { 91 try { 92 boolean useMostVisited = BrowserSettings.getInstance().useMostVisitedHomepage(); 93 if (useMostVisited && url.startsWith("content://")) { 94 Uri uri = Uri.parse(url); 95 if (AUTHORITY.equals(uri.getAuthority())) { 96 InputStream ins = context.getContentResolver() 97 .openInputStream(uri); 98 return new WebResourceResponse("text/html", "utf-8", ins); 99 } 100 } 101 boolean listFiles = BrowserSettings.getInstance().isDebugEnabled(); 102 if (listFiles && interceptFile(url)) { 103 PipedInputStream ins = new PipedInputStream(); 104 PipedOutputStream outs = new PipedOutputStream(ins); 105 new RequestHandler(context, Uri.parse(url), outs).start(); 106 return new WebResourceResponse("text/html", "utf-8", ins); 107 } 108 } catch (Exception e) {} 109 return null; 110 } 111 112 private static boolean interceptFile(String url) { 113 if (!url.startsWith("file:///")) { 114 return false; 115 } 116 String fpath = url.substring(7); 117 File f = new File(fpath); 118 if (!f.isDirectory()) { 119 return false; 120 } 121 return true; 122 } 123 124 } 125
