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/*
* 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 com.android.browser;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.DownloadManager;
import android.app.DownloadManager.Request;
import android.content.ActivityNotFoundException;
import android.content.ComponentName;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.os.StatFs;
import android.os.storage.StorageManager;
import android.util.Log;
import org.codeaurora.swe.CookieManager;
import android.webkit.URLUtil;
import android.widget.Toast;
import com.android.browser.R;
import com.android.browser.mdm.DownloadDirRestriction;
import com.android.browser.platformsupport.WebAddress;
import com.android.browser.reflect.ReflectHelper;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.io.File;
/**
* Handle download requests
*/
public class DownloadHandler {
private static final boolean LOGD_ENABLED =
com.android.browser.Browser.LOGD_ENABLED;
private static final String LOGTAG = "DLHandler";
private static String mInternalStorage;
private static String mExternalStorage;
private final static String INVALID_PATH = "/storage";
public static void startingDownload(Activity activity,
String url, String userAgent, String contentDisposition,
String mimetype, String referer, boolean privateBrowsing, long contentLength,
String filename, String downloadPath) {
// java.net.URI is a lot stricter than KURL so we have to encode some
// extra characters. Fix for b 2538060 and b 1634719
WebAddress webAddress;
try {
webAddress = new WebAddress(url);
webAddress.setPath(encodePath(webAddress.getPath()));
} catch (Exception e) {
// This only happens for very bad urls, we want to chatch the
// exception here
Log.e(LOGTAG, "Exception trying to parse url:" + url);
return;
}
String addressString = webAddress.toString();
Uri uri = Uri.parse(addressString);
final DownloadManager.Request request;
try {
request = new DownloadManager.Request(uri);
} catch (IllegalArgumentException e) {
Toast.makeText(activity, R.string.cannot_download, Toast.LENGTH_SHORT).show();
return;
}
request.setMimeType(mimetype);
// set downloaded file destination to /sdcard/Download.
// or, should it be set to one of several Environment.DIRECTORY* dirs
// depending on mimetype?
try {
setDestinationDir(downloadPath, filename, request);
} catch (Exception e) {
showNoEnoughMemoryDialog(activity);
return;
}
// let this downloaded file be scanned by MediaScanner - so that it can
// show up in Gallery app, for example.
request.allowScanningByMediaScanner();
request.setDescription(webAddress.getHost());
// XXX: Have to use the old url since the cookies were stored using the
// old percent-encoded url.
String cookies = CookieManager.getInstance().getCookie(url, privateBrowsing);
request.addRequestHeader("cookie", cookies);
request.addRequestHeader("User-Agent", userAgent);
request.addRequestHeader("Referer", referer);
request.setVisibleInDownloadsUi(!privateBrowsing);
request.setNotificationVisibility(
DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
final DownloadManager manager = (DownloadManager) activity
.getSystemService(Context.DOWNLOAD_SERVICE);
new Thread("Browser download") {
public void run() {
try {
manager.enqueue(request);
} catch (Exception e) {
Log.w("DLHandler", "Could not enqueue the download", e);
}
}
}.start();
showStartDownloadToast(activity, privateBrowsing);
}
private static boolean isAudioFileType(int fileType){
Object[] params = {Integer.valueOf(fileType)};
Class[] type = new Class[] {int.class};
Boolean result = (Boolean) ReflectHelper.invokeMethod("android.media.MediaFile",
"isAudioFileType", type, params);
return result;
}
private static boolean isVideoFileType(int fileType){
Object[] params = {Integer.valueOf(fileType)};
Class[] type = new Class[] {int.class};
Boolean result = (Boolean) ReflectHelper.invokeMethod("android.media.MediaFile",
"isVideoFileType", type, params);
return result;
}
/**
* Notify the host application a download should be done, or that
* the data should be streamed if a streaming viewer is available.
* @param activity Activity requesting the download.
* @param url The full url to the content that should be downloaded
* @param userAgent User agent of the downloading application.
* @param contentDisposition Content-disposition http header, if present.
* @param mimetype The mimetype of the content reported by the server
* @param referer The referer associated with the downloaded url
* @param privateBrowsing If the request is coming from a private browsing tab.
*/
public static boolean onDownloadStart(final Activity activity, final String url,
final String userAgent, final String contentDisposition, final String mimetype,
final String referer, final boolean privateBrowsing, final long contentLength) {
// if we're dealing wih A/V content that's not explicitly marked
// for download, check if it's streamable.
if (contentDisposition == null
|| !contentDisposition.regionMatches(
true, 0, "attachment", 0, 10)) {
// Add for Carrier Feature - When open an audio/video link, prompt a dialog
// to let the user choose play or download operation.
Uri uri = Uri.parse(url);
String scheme = uri.getScheme();
Log.v(LOGTAG, "scheme:" + scheme + ", mimetype:" + mimetype);
// Some mimetype for audio/video files is not started with "audio" or "video",
// such as ogg audio file with mimetype "application/ogg". So we also check
// file type by MediaFile.isAudioFileType() and MediaFile.isVideoFileType().
// For those file types other than audio or video, download it immediately.
Object[] params = {mimetype};
Class[] type = new Class[] {String.class};
Integer result = (Integer) ReflectHelper.invokeMethod("android.media.MediaFile",
"getFileTypeForMimeType", type, params);
int fileType = result.intValue();
if ("http".equalsIgnoreCase(scheme) &&
(mimetype.startsWith("audio/") ||
mimetype.startsWith("video/") ||
isAudioFileType(fileType) ||
isVideoFileType(fileType))) {
new AlertDialog.Builder(activity)
.setTitle(R.string.application_name)
.setIcon(R.drawable.default_video_poster)
.setMessage(R.string.http_video_msg)
.setPositiveButton(R.string.video_save, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
onDownloadStartNoStream(activity, url, userAgent, contentDisposition,
mimetype, referer, privateBrowsing, contentLength);
}
})
.setNegativeButton(R.string.video_play, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.parse(url), mimetype);
try {
String trimmedcontentDisposition = trimContentDisposition(contentDisposition);
String title = URLUtil.guessFileName(url, trimmedcontentDisposition, mimetype);
intent.putExtra(Intent.EXTRA_TITLE, title);
activity.startActivity(intent);
} catch (ActivityNotFoundException ex) {
Log.w(LOGTAG, "When http stream play, activity not found for "
+ mimetype + " over " + Uri.parse(url).getScheme(), ex);
}
}
}).show();
return true;
}
// query the package manager to see if there's a registered handler
// that matches.
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.parse(url), mimetype);
ResolveInfo info = activity.getPackageManager().resolveActivity(intent,
PackageManager.MATCH_DEFAULT_ONLY);
if (info != null) {
ComponentName myName = activity.getComponentName();
// If we resolved to ourselves, we don't want to attempt to
// load the url only to try and download it again.
if (!myName.getPackageName().equals(
info.activityInfo.packageName)
|| !myName.getClassName().equals(
info.activityInfo.name)) {
// someone (other than us) knows how to handle this mime
// type with this scheme, don't download.
try {
activity.startActivity(intent);
return false;
} catch (ActivityNotFoundException ex) {
if (LOGD_ENABLED) {
Log.d(LOGTAG, "activity not found for " + mimetype
+ " over " + Uri.parse(url).getScheme(),
ex);
}
// Best behavior is to fall back to a download in this
// case
}
}
}
}
onDownloadStartNoStream(activity, url, userAgent, contentDisposition,
mimetype, referer, privateBrowsing, contentLength);
return false;
}
// This is to work around the fact that java.net.URI throws Exceptions
// instead of just encoding URL's properly
// Helper method for onDownloadStartNoStream
private static String encodePath(String path) {
char[] chars = path.toCharArray();
boolean needed = false;
for (char c : chars) {
if (c == '[' || c == ']' || c == '|') {
needed = true;
break;
}
}
if (needed == false) {
return path;
}
StringBuilder sb = new StringBuilder("");
for (char c : chars) {
if (c == '[' || c == ']' || c == '|') {
sb.append('%');
sb.append(Integer.toHexString(c));
} else {
sb.append(c);
}
}
return sb.toString();
}
/**
* Notify the host application a download should be done, even if there
* is a streaming viewer available for thise type.
* @param activity Activity requesting the download.
* @param url The full url to the content that should be downloaded
* @param userAgent User agent of the downloading application.
* @param contentDisposition Content-disposition http header, if present.
* @param mimetype The mimetype of the content reported by the server
* @param referer The referer associated with the downloaded url
* @param privateBrowsing If the request is coming from a private browsing tab.
*/
/* package */static void onDownloadStartNoStream(Activity activity,
String url, String userAgent, String contentDisposition,
String mimetype, String referer, boolean privateBrowsing, long contentLength) {
contentDisposition = trimContentDisposition(contentDisposition);
String filename = URLUtil.guessFileName(url,
contentDisposition, mimetype);
// Check to see if we have an SDCard
String status = Environment.getExternalStorageState();
if (!status.equals(Environment.MEDIA_MOUNTED)) {
int title;
String msg;
// Check to see if the SDCard is busy, same as the music app
if (status.equals(Environment.MEDIA_SHARED)) {
msg = activity.getString(R.string.download_sdcard_busy_dlg_msg);
title = R.string.download_sdcard_busy_dlg_title;
} else {
msg = activity.getString(R.string.download_no_sdcard_dlg_msg, filename);
title = R.string.download_no_sdcard_dlg_title;
}
new AlertDialog.Builder(activity)
.setTitle(title)
.setIconAttribute(android.R.attr.alertDialogIcon)
.setMessage(msg)
.setPositiveButton(R.string.ok, null)
.show();
return;
}
if (mimetype == null) {
// We must have long pressed on a link or image to download it. We
// are not sure of the mimetype in this case, so do a head request
new FetchUrlMimeType(activity, url, userAgent, referer,
privateBrowsing, filename).start();
} else {
if (DownloadDirRestriction.getInstance().downloadsAllowed()) {
startDownloadSettings(activity, url, userAgent, contentDisposition, mimetype, referer,
privateBrowsing, contentLength, filename);
}
else {
Toast.makeText(activity, R.string.managed_by_your_administrator, Toast.LENGTH_SHORT)
.show();
}
}
}
static String trimContentDisposition(String contentDisposition) {
final Pattern CONTENT_DISPOSITION_PATTERN =
Pattern.compile("filename\\s*=\\s*(\"?)([^\";]*)\\1\\s*",
Pattern.CASE_INSENSITIVE);
if (contentDisposition != null) {
try {
Matcher m = CONTENT_DISPOSITION_PATTERN.matcher(contentDisposition);
if (m.find()) {
contentDisposition = "attachment; filename="+m.group(2);
}
return contentDisposition;
} catch (IllegalStateException ex) {
// This function is defined as returning null when it can't parse the header
}
}
return null;
}
public static void initStorageDefaultPath(Context context) {
mExternalStorage = getExternalStorageDirectory(context);
if (isPhoneStorageSupported()) {
mInternalStorage = Environment.getExternalStorageDirectory().getPath();
} else {
mInternalStorage = null;
}
}
public static void startDownloadSettings(Activity activity,
String url, String userAgent, String contentDisposition,
String mimetype, String referer, boolean privateBrowsing, long contentLength,
String filename) {
Bundle fileInfo = new Bundle();
fileInfo.putString("url", url);
fileInfo.putString("userAgent", userAgent);
fileInfo.putString("contentDisposition", contentDisposition);
fileInfo.putString("mimetype", mimetype);
fileInfo.putString("referer", referer);
fileInfo.putLong("contentLength", contentLength);
fileInfo.putBoolean("privateBrowsing", privateBrowsing);
fileInfo.putString("filename", filename);
Intent intent = new Intent("android.intent.action.BROWSERDOWNLOAD");
// Since there could be multiple browsers capable of handling
// the same intent we assure that the same package handles it
intent.setPackage(activity.getPackageName());
intent.putExtras(fileInfo);
activity.startActivity(intent);
}
public static void setAppointedFolder(String downloadPath) {
File file = new File(downloadPath);
if (file.exists()) {
if (!file.isDirectory()) {
throw new IllegalStateException(file.getAbsolutePath() +
" already exists and is not a directory");
}
} else {
if (!file.mkdir()) {
throw new IllegalStateException("Unable to create directory: " +
file.getAbsolutePath());
}
}
}
private static void setDestinationDir(String downloadPath, String filename, Request request) {
File file = new File(downloadPath);
if (file.exists()) {
if (!file.isDirectory()) {
throw new IllegalStateException(file.getAbsolutePath() +
" already exists and is not a directory");
}
} else {
if (!file.mkdir()) {
throw new IllegalStateException("Unable to create directory: " +
file.getAbsolutePath());
}
}
setDestinationFromBase(file, filename, request);
}
private static void setDestinationFromBase(File file, String filename, Request request) {
if (filename == null) {
throw new NullPointerException("filename cannot be null");
}
request.setDestinationUri(Uri.withAppendedPath(Uri.fromFile(file), filename));
}
public static void fileExistQueryDialog(Activity activity) {
new AlertDialog.Builder(activity)
.setTitle(R.string.download_file_exist)
.setIcon(android.R.drawable.ic_dialog_info)
.setMessage(R.string.download_file_exist_msg)
// if yes, delete existed file and start new download thread
.setPositiveButton(R.string.ok, null)
// if no, do nothing at all
.show();
}
public static long getAvailableMemory(String root) {
StatFs stat = new StatFs(root);
final long LEFT10MByte = 2560;
long blockSize = stat.getBlockSize();
long availableBlocks = stat.getAvailableBlocks() - LEFT10MByte;
return availableBlocks * blockSize;
}
public static void showNoEnoughMemoryDialog(Activity mContext) {
new AlertDialog.Builder(mContext)
.setTitle(R.string.download_no_enough_memory)
.setIconAttribute(android.R.attr.alertDialogIcon)
.setMessage(R.string.download_no_enough_memory)
.setPositiveButton(R.string.ok, null)
.show();
}
public static boolean manageNoEnoughMemory(long contentLength, String root) {
long mAvailableBytes = getAvailableMemory(root);
if (mAvailableBytes > 0) {
if (contentLength > mAvailableBytes) {
return true;
}
} else {
return true;
}
return false;
}
public static void showStartDownloadToast(Activity activity,
boolean privateBrowsing) {
if (!privateBrowsing) {
Intent intent = new Intent(DownloadManager.ACTION_VIEW_DOWNLOADS);
activity.startActivity(intent);
} else {
activity.finish();
}
Toast.makeText(activity, R.string.download_pending, Toast.LENGTH_SHORT)
.show();
}
/**
* wheather the storage status OK for download file
*
* @param activity
* @param filename the download file's name
* @param downloadPath the download file's path will be in
* @return boolean true is ok,and false is not
*/
public static boolean isStorageStatusOK(Activity activity, String filename, String downloadPath) {
if (downloadPath.equals(INVALID_PATH)) {
new AlertDialog.Builder(activity)
.setTitle(R.string.path_wrong)
.setIcon(android.R.drawable.ic_dialog_alert)
.setMessage(R.string.invalid_path)
.setPositiveButton(R.string.ok, null)
.show();
return false;
}
// assure that internal storage is initialized before
// comparing it with download path
if (mInternalStorage == null) {
initStorageDefaultPath(activity);
}
if (!(isPhoneStorageSupported() && downloadPath.contains(mInternalStorage))) {
String status = getExternalStorageState(activity);
if (!status.equals(Environment.MEDIA_MOUNTED)) {
int title;
String msg;
// Check to see if the SDCard is busy, same as the music app
if (status.equals(Environment.MEDIA_SHARED)) {
msg = activity.getString(R.string.download_sdcard_busy_dlg_msg);
title = R.string.download_sdcard_busy_dlg_title;
} else {
msg = activity.getString(R.string.download_no_sdcard_dlg_msg, filename);
title = R.string.download_no_sdcard_dlg_title;
}
new AlertDialog.Builder(activity)
.setTitle(title)
.setIcon(android.R.drawable.ic_dialog_alert)
.setMessage(msg)
.setPositiveButton(R.string.ok, null)
.show();
return false;
}
} else {
String status = Environment.getExternalStorageState();
if (!status.equals(Environment.MEDIA_MOUNTED)) {
int mTitle = R.string.download_path_unavailable_dlg_title;
String mMsg = activity.getString(R.string.download_path_unavailable_dlg_msg);
new AlertDialog.Builder(activity)
.setTitle(mTitle)
.setIcon(android.R.drawable.ic_dialog_alert)
.setMessage(mMsg)
.setPositiveButton(R.string.ok, null)
.show();
return false;
}
}
return true;
}
/**
* wheather support Phone Storage
*
* @return boolean true support Phone Storage ,false will be not
*/
public static boolean isPhoneStorageSupported() {
return true;
}
/**
* show Dialog to warn filename is null
*
* @param activity
*/
public static void showFilenameEmptyDialog(Activity activity) {
new AlertDialog.Builder(activity)
.setTitle(R.string.filename_empty_title)
.setIcon(android.R.drawable.ic_dialog_alert)
.setMessage(R.string.filename_empty_msg)
.setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
}
})
.show();
}
/**
* get the filename except the suffix and dot
*
* @return String the filename except suffix and dot
*/
public static String getFilenameBase(String filename) {
int dotindex = filename.lastIndexOf('.');
if (dotindex != -1) {
return filename.substring(0, dotindex);
} else {
return "";
}
}
/**
* get the filename's extension from filename
*
* @param filename the download filename, may be the user entered
* @return String the filename's extension
*/
public static String getFilenameExtension(String filename) {
int dotindex = filename.lastIndexOf('.');
if (dotindex != -1) {
return filename.substring(dotindex + 1);
} else {
return "";
}
}
public static String getDefaultDownloadPath(Context context) {
String defaultDownloadPath;
String defaultStorage;
if (isPhoneStorageSupported()) {
defaultStorage = Environment.getExternalStorageDirectory().getPath();
} else {
defaultStorage = getExternalStorageDirectory(context);
}
defaultDownloadPath = defaultStorage + DownloadDirRestriction.getInstance().getDownloadDirectory();
Log.e(LOGTAG, "defaultStorage directory is : " + defaultDownloadPath);
return defaultDownloadPath;
}
/**
* translate the directory name into a name which is easy to know for user
*
* @param activity
* @param downloadPath
* @return String
*/
public static String getDownloadPathForUser(Activity activity, String downloadPath) {
if (downloadPath == null) {
return downloadPath;
}
final String phoneStorageDir;
final String sdCardDir = getExternalStorageDirectory(activity);
if (isPhoneStorageSupported()) {
phoneStorageDir = Environment.getExternalStorageDirectory().getPath();
} else {
phoneStorageDir = null;
}
if (sdCardDir != null && downloadPath.startsWith(sdCardDir)) {
String sdCardLabel = activity.getResources().getString(
R.string.download_path_sd_card_label);
downloadPath = downloadPath.replace(sdCardDir, sdCardLabel);
} else if ((phoneStorageDir != null) && downloadPath.startsWith(phoneStorageDir)) {
String phoneStorageLabel = activity.getResources().getString(
R.string.download_path_phone_storage_label);
downloadPath = downloadPath.replace(phoneStorageDir, phoneStorageLabel);
}
return downloadPath;
}
private static boolean isRemovable(Object obj) {
return (Boolean) ReflectHelper.invokeMethod(obj,
"isRemovable", null, null);
}
private static boolean allowMassStorage(Object obj) {
return (Boolean) ReflectHelper.invokeMethod(obj,
"allowMassStorage", null, null);
}
private static String getPath(Object obj) {
return (String) ReflectHelper.invokeMethod(obj,
"getPath", null, null);
}
private static String getExternalStorageDirectory(Context context) {
String sd = null;
StorageManager mStorageManager = (StorageManager) context
.getSystemService(Context.STORAGE_SERVICE);
Object[] volumes = (Object[]) ReflectHelper.invokeMethod(
mStorageManager, "getVolumeList", null, null);
for (int i = 0; i < volumes.length; i++) {
if (isRemovable(volumes[i]) && allowMassStorage(volumes[i])) {
sd = getPath(volumes[i]);
break;
}
}
return sd;
}
private static String getExternalStorageState(Context context) {
StorageManager mStorageManager = (StorageManager) context
.getSystemService(Context.STORAGE_SERVICE);
String path = getExternalStorageDirectory(context);
Object[] params = {path};
Class[] type = new Class[] {String.class};
return (String) ReflectHelper.invokeMethod(mStorageManager,
"getVolumeState", type, params);
}
}