a6c969c036
Bug: 34736056 Test: Manual through the test app Change-Id: Ibd48d5e292dda490d9e4e4528589b2b7ba97a4b4
414 lines
13 KiB
Java
414 lines
13 KiB
Java
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.media;
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import android.net.NetworkUtils;
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import android.os.IBinder;
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import android.os.StrictMode;
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import android.util.Log;
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import java.io.BufferedInputStream;
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import java.io.InputStream;
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import java.io.IOException;
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import java.net.CookieHandler;
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import java.net.CookieManager;
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import java.net.Proxy;
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import java.net.URL;
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import java.net.HttpURLConnection;
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import java.net.MalformedURLException;
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import java.net.NoRouteToHostException;
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import java.net.ProtocolException;
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import java.net.UnknownServiceException;
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import java.util.HashMap;
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import java.util.Map;
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import static android.media.MediaPlayer.MEDIA_ERROR_UNSUPPORTED;
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/** @hide */
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public class MediaHTTPConnection extends IMediaHTTPConnection.Stub {
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private static final String TAG = "MediaHTTPConnection";
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private static final boolean VERBOSE = false;
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// connection timeout - 30 sec
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private static final int CONNECT_TIMEOUT_MS = 30 * 1000;
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private long mCurrentOffset = -1;
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private URL mURL = null;
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private Map<String, String> mHeaders = null;
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private HttpURLConnection mConnection = null;
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private long mTotalSize = -1;
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private InputStream mInputStream = null;
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private boolean mAllowCrossDomainRedirect = true;
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private boolean mAllowCrossProtocolRedirect = true;
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// from com.squareup.okhttp.internal.http
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private final static int HTTP_TEMP_REDIRECT = 307;
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private final static int MAX_REDIRECTS = 20;
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public MediaHTTPConnection() {
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CookieManager cookieManager = (CookieManager)CookieHandler.getDefault();
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if (cookieManager == null) {
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Log.w(TAG, "MediaHTTPConnection: Unexpected. No CookieManager found.");
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}
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native_setup();
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}
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@Override
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public IBinder connect(String uri, String headers) {
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if (VERBOSE) {
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Log.d(TAG, "connect: uri=" + uri + ", headers=" + headers);
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}
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try {
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disconnect();
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mAllowCrossDomainRedirect = true;
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mURL = new URL(uri);
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mHeaders = convertHeaderStringToMap(headers);
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} catch (MalformedURLException e) {
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return null;
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}
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return native_getIMemory();
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}
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private boolean parseBoolean(String val) {
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try {
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return Long.parseLong(val) != 0;
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} catch (NumberFormatException e) {
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return "true".equalsIgnoreCase(val) ||
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"yes".equalsIgnoreCase(val);
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}
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}
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/* returns true iff header is internal */
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private boolean filterOutInternalHeaders(String key, String val) {
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if ("android-allow-cross-domain-redirect".equalsIgnoreCase(key)) {
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mAllowCrossDomainRedirect = parseBoolean(val);
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// cross-protocol redirects are also controlled by this flag
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mAllowCrossProtocolRedirect = mAllowCrossDomainRedirect;
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} else {
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return false;
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}
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return true;
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}
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private Map<String, String> convertHeaderStringToMap(String headers) {
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HashMap<String, String> map = new HashMap<String, String>();
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String[] pairs = headers.split("\r\n");
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for (String pair : pairs) {
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int colonPos = pair.indexOf(":");
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if (colonPos >= 0) {
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String key = pair.substring(0, colonPos);
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String val = pair.substring(colonPos + 1);
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if (!filterOutInternalHeaders(key, val)) {
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map.put(key, val);
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}
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}
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}
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return map;
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}
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@Override
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public void disconnect() {
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teardownConnection();
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mHeaders = null;
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mURL = null;
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}
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private void teardownConnection() {
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if (mConnection != null) {
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mInputStream = null;
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mConnection.disconnect();
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mConnection = null;
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mCurrentOffset = -1;
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}
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}
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private static final boolean isLocalHost(URL url) {
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if (url == null) {
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return false;
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}
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String host = url.getHost();
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if (host == null) {
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return false;
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}
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try {
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if (host.equalsIgnoreCase("localhost")) {
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return true;
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}
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if (NetworkUtils.numericToInetAddress(host).isLoopbackAddress()) {
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return true;
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}
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} catch (IllegalArgumentException iex) {
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}
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return false;
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}
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private void seekTo(long offset) throws IOException {
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teardownConnection();
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try {
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int response;
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int redirectCount = 0;
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URL url = mURL;
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// do not use any proxy for localhost (127.0.0.1)
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boolean noProxy = isLocalHost(url);
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while (true) {
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if (noProxy) {
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mConnection = (HttpURLConnection)url.openConnection(Proxy.NO_PROXY);
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} else {
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mConnection = (HttpURLConnection)url.openConnection();
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}
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mConnection.setConnectTimeout(CONNECT_TIMEOUT_MS);
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// handle redirects ourselves if we do not allow cross-domain redirect
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mConnection.setInstanceFollowRedirects(mAllowCrossDomainRedirect);
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if (mHeaders != null) {
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for (Map.Entry<String, String> entry : mHeaders.entrySet()) {
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mConnection.setRequestProperty(
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entry.getKey(), entry.getValue());
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}
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}
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if (offset > 0) {
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mConnection.setRequestProperty(
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"Range", "bytes=" + offset + "-");
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}
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response = mConnection.getResponseCode();
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if (response != HttpURLConnection.HTTP_MULT_CHOICE &&
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response != HttpURLConnection.HTTP_MOVED_PERM &&
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response != HttpURLConnection.HTTP_MOVED_TEMP &&
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response != HttpURLConnection.HTTP_SEE_OTHER &&
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response != HTTP_TEMP_REDIRECT) {
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// not a redirect, or redirect handled by HttpURLConnection
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break;
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}
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if (++redirectCount > MAX_REDIRECTS) {
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throw new NoRouteToHostException("Too many redirects: " + redirectCount);
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}
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String method = mConnection.getRequestMethod();
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if (response == HTTP_TEMP_REDIRECT &&
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!method.equals("GET") && !method.equals("HEAD")) {
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// "If the 307 status code is received in response to a
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// request other than GET or HEAD, the user agent MUST NOT
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// automatically redirect the request"
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throw new NoRouteToHostException("Invalid redirect");
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}
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String location = mConnection.getHeaderField("Location");
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if (location == null) {
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throw new NoRouteToHostException("Invalid redirect");
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}
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url = new URL(mURL /* TRICKY: don't use url! */, location);
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if (!url.getProtocol().equals("https") &&
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!url.getProtocol().equals("http")) {
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throw new NoRouteToHostException("Unsupported protocol redirect");
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}
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boolean sameProtocol = mURL.getProtocol().equals(url.getProtocol());
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if (!mAllowCrossProtocolRedirect && !sameProtocol) {
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throw new NoRouteToHostException("Cross-protocol redirects are disallowed");
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}
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boolean sameHost = mURL.getHost().equals(url.getHost());
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if (!mAllowCrossDomainRedirect && !sameHost) {
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throw new NoRouteToHostException("Cross-domain redirects are disallowed");
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}
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if (response != HTTP_TEMP_REDIRECT) {
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// update effective URL, unless it is a Temporary Redirect
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mURL = url;
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}
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}
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if (mAllowCrossDomainRedirect) {
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// remember the current, potentially redirected URL if redirects
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// were handled by HttpURLConnection
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mURL = mConnection.getURL();
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}
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if (response == HttpURLConnection.HTTP_PARTIAL) {
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// Partial content, we cannot just use getContentLength
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// because what we want is not just the length of the range
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// returned but the size of the full content if available.
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String contentRange =
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mConnection.getHeaderField("Content-Range");
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mTotalSize = -1;
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if (contentRange != null) {
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// format is "bytes xxx-yyy/zzz
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// where "zzz" is the total number of bytes of the
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// content or '*' if unknown.
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int lastSlashPos = contentRange.lastIndexOf('/');
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if (lastSlashPos >= 0) {
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String total =
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contentRange.substring(lastSlashPos + 1);
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try {
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mTotalSize = Long.parseLong(total);
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} catch (NumberFormatException e) {
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}
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}
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}
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} else if (response != HttpURLConnection.HTTP_OK) {
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throw new IOException();
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} else {
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mTotalSize = mConnection.getContentLength();
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}
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if (offset > 0 && response != HttpURLConnection.HTTP_PARTIAL) {
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// Some servers simply ignore "Range" requests and serve
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// data from the start of the content.
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throw new ProtocolException();
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}
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mInputStream =
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new BufferedInputStream(mConnection.getInputStream());
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mCurrentOffset = offset;
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} catch (IOException e) {
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mTotalSize = -1;
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mInputStream = null;
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mConnection = null;
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mCurrentOffset = -1;
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throw e;
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}
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}
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@Override
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public int readAt(long offset, int size) {
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return native_readAt(offset, size);
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}
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private int readAt(long offset, byte[] data, int size) {
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StrictMode.ThreadPolicy policy =
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new StrictMode.ThreadPolicy.Builder().permitAll().build();
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StrictMode.setThreadPolicy(policy);
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try {
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if (offset != mCurrentOffset) {
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seekTo(offset);
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}
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int n = mInputStream.read(data, 0, size);
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if (n == -1) {
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// InputStream signals EOS using a -1 result, our semantics
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// are to return a 0-length read.
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n = 0;
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}
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mCurrentOffset += n;
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if (VERBOSE) {
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Log.d(TAG, "readAt " + offset + " / " + size + " => " + n);
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}
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return n;
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} catch (ProtocolException e) {
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Log.w(TAG, "readAt " + offset + " / " + size + " => " + e);
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return MEDIA_ERROR_UNSUPPORTED;
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} catch (NoRouteToHostException e) {
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Log.w(TAG, "readAt " + offset + " / " + size + " => " + e);
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return MEDIA_ERROR_UNSUPPORTED;
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} catch (UnknownServiceException e) {
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Log.w(TAG, "readAt " + offset + " / " + size + " => " + e);
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return MEDIA_ERROR_UNSUPPORTED;
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} catch (IOException e) {
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if (VERBOSE) {
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Log.d(TAG, "readAt " + offset + " / " + size + " => -1");
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}
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return -1;
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} catch (Exception e) {
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if (VERBOSE) {
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Log.d(TAG, "unknown exception " + e);
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Log.d(TAG, "readAt " + offset + " / " + size + " => -1");
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}
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return -1;
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}
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}
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@Override
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public long getSize() {
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if (mConnection == null) {
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try {
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seekTo(0);
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} catch (IOException e) {
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return -1;
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}
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}
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return mTotalSize;
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}
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@Override
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public String getMIMEType() {
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if (mConnection == null) {
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try {
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seekTo(0);
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} catch (IOException e) {
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return "application/octet-stream";
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}
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}
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return mConnection.getContentType();
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}
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@Override
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public String getUri() {
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return mURL.toString();
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}
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@Override
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protected void finalize() {
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native_finalize();
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}
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private static native final void native_init();
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private native final void native_setup();
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private native final void native_finalize();
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private native final IBinder native_getIMemory();
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private native final int native_readAt(long offset, int size);
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static {
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System.loadLibrary("media_jni");
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native_init();
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}
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private long mNativeContext;
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}
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