283 lines
11 KiB
Java
283 lines
11 KiB
Java
package org.schabi.newpipe;
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import android.content.Context;
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import android.os.Build;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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import androidx.preference.PreferenceManager;
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import org.schabi.newpipe.extractor.downloader.Downloader;
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import org.schabi.newpipe.extractor.downloader.Request;
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import org.schabi.newpipe.extractor.downloader.Response;
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import org.schabi.newpipe.extractor.exceptions.ReCaptchaException;
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import org.schabi.newpipe.util.CookieUtils;
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import org.schabi.newpipe.util.InfoCache;
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import org.schabi.newpipe.util.TLSSocketFactoryCompat;
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import java.io.IOException;
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import java.io.InputStream;
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import java.security.KeyManagementException;
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import java.security.KeyStore;
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import java.security.KeyStoreException;
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import java.security.NoSuchAlgorithmException;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.concurrent.TimeUnit;
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import javax.net.ssl.SSLSocketFactory;
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import javax.net.ssl.TrustManager;
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import javax.net.ssl.TrustManagerFactory;
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import javax.net.ssl.X509TrustManager;
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import okhttp3.CipherSuite;
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import okhttp3.ConnectionSpec;
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import okhttp3.OkHttpClient;
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import okhttp3.RequestBody;
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import okhttp3.ResponseBody;
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import static org.schabi.newpipe.MainActivity.DEBUG;
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public final class DownloaderImpl extends Downloader {
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public static final String USER_AGENT
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= "Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Firefox/68.0";
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public static final String YOUTUBE_RESTRICTED_MODE_COOKIE_KEY
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= "youtube_restricted_mode_key";
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public static final String YOUTUBE_RESTRICTED_MODE_COOKIE = "PREF=f2=8000000";
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public static final String YOUTUBE_DOMAIN = "youtube.com";
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private static DownloaderImpl instance;
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private final Map<String, String> mCookies;
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private final OkHttpClient client;
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private DownloaderImpl(final OkHttpClient.Builder builder) {
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if (Build.VERSION.SDK_INT == Build.VERSION_CODES.KITKAT) {
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enableModernTLS(builder);
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}
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this.client = builder
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.readTimeout(30, TimeUnit.SECONDS)
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// .cache(new Cache(new File(context.getExternalCacheDir(), "okhttp"),
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// 16 * 1024 * 1024))
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.build();
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this.mCookies = new HashMap<>();
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}
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/**
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* It's recommended to call exactly once in the entire lifetime of the application.
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*
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* @param builder if null, default builder will be used
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* @return a new instance of {@link DownloaderImpl}
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*/
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public static DownloaderImpl init(@Nullable final OkHttpClient.Builder builder) {
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instance = new DownloaderImpl(
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builder != null ? builder : new OkHttpClient.Builder());
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return instance;
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}
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public static DownloaderImpl getInstance() {
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return instance;
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}
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/**
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* Enable TLS 1.2 and 1.1 on Android Kitkat. This function is mostly taken
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* from the documentation of OkHttpClient.Builder.sslSocketFactory(_,_).
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* <p>
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* If there is an error, the function will safely fall back to doing nothing
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* and printing the error to the console.
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* </p>
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*
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* @param builder The HTTPClient Builder on which TLS is enabled on (will be modified in-place)
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*/
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private static void enableModernTLS(final OkHttpClient.Builder builder) {
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try {
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// get the default TrustManager
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final TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(
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TrustManagerFactory.getDefaultAlgorithm());
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trustManagerFactory.init((KeyStore) null);
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final TrustManager[] trustManagers = trustManagerFactory.getTrustManagers();
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if (trustManagers.length != 1 || !(trustManagers[0] instanceof X509TrustManager)) {
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throw new IllegalStateException("Unexpected default trust managers:"
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+ Arrays.toString(trustManagers));
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}
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final X509TrustManager trustManager = (X509TrustManager) trustManagers[0];
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// insert our own TLSSocketFactory
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final SSLSocketFactory sslSocketFactory = TLSSocketFactoryCompat.getInstance();
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builder.sslSocketFactory(sslSocketFactory, trustManager);
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// This will try to enable all modern CipherSuites(+2 more)
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// that are supported on the device.
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// Necessary because some servers (e.g. Framatube.org)
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// don't support the old cipher suites.
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// https://github.com/square/okhttp/issues/4053#issuecomment-402579554
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final List<CipherSuite> cipherSuites =
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new ArrayList<>(ConnectionSpec.MODERN_TLS.cipherSuites());
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cipherSuites.add(CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA);
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cipherSuites.add(CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA);
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final ConnectionSpec legacyTLS = new ConnectionSpec.Builder(ConnectionSpec.MODERN_TLS)
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.cipherSuites(cipherSuites.toArray(new CipherSuite[0]))
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.build();
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builder.connectionSpecs(Arrays.asList(legacyTLS, ConnectionSpec.CLEARTEXT));
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} catch (final KeyManagementException | NoSuchAlgorithmException | KeyStoreException e) {
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if (DEBUG) {
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e.printStackTrace();
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}
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}
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}
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public String getCookies(final String url) {
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final List<String> resultCookies = new ArrayList<>();
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if (url.contains(YOUTUBE_DOMAIN)) {
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final String youtubeCookie = getCookie(YOUTUBE_RESTRICTED_MODE_COOKIE_KEY);
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if (youtubeCookie != null) {
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resultCookies.add(youtubeCookie);
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}
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}
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// Recaptcha cookie is always added TODO: not sure if this is necessary
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final String recaptchaCookie = getCookie(ReCaptchaActivity.RECAPTCHA_COOKIES_KEY);
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if (recaptchaCookie != null) {
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resultCookies.add(recaptchaCookie);
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}
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return CookieUtils.concatCookies(resultCookies);
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}
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public String getCookie(final String key) {
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return mCookies.get(key);
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}
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public void setCookie(final String key, final String cookie) {
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mCookies.put(key, cookie);
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}
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public void removeCookie(final String key) {
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mCookies.remove(key);
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}
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public void updateYoutubeRestrictedModeCookies(final Context context) {
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final String restrictedModeEnabledKey =
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context.getString(R.string.youtube_restricted_mode_enabled);
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final boolean restrictedModeEnabled = PreferenceManager.getDefaultSharedPreferences(context)
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.getBoolean(restrictedModeEnabledKey, false);
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updateYoutubeRestrictedModeCookies(restrictedModeEnabled);
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}
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public void updateYoutubeRestrictedModeCookies(final boolean youtubeRestrictedModeEnabled) {
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if (youtubeRestrictedModeEnabled) {
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setCookie(YOUTUBE_RESTRICTED_MODE_COOKIE_KEY,
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YOUTUBE_RESTRICTED_MODE_COOKIE);
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} else {
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removeCookie(YOUTUBE_RESTRICTED_MODE_COOKIE_KEY);
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}
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InfoCache.getInstance().clearCache();
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}
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/**
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* Get the size of the content that the url is pointing by firing a HEAD request.
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*
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* @param url an url pointing to the content
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* @return the size of the content, in bytes
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*/
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public long getContentLength(final String url) throws IOException {
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try {
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final Response response = head(url);
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return Long.parseLong(response.getHeader("Content-Length"));
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} catch (final NumberFormatException e) {
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throw new IOException("Invalid content length", e);
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} catch (final ReCaptchaException e) {
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throw new IOException(e);
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}
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}
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public InputStream stream(final String siteUrl) throws IOException {
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try {
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final okhttp3.Request.Builder requestBuilder = new okhttp3.Request.Builder()
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.method("GET", null).url(siteUrl)
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.addHeader("User-Agent", USER_AGENT);
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final String cookies = getCookies(siteUrl);
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if (!cookies.isEmpty()) {
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requestBuilder.addHeader("Cookie", cookies);
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}
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final okhttp3.Request request = requestBuilder.build();
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final okhttp3.Response response = client.newCall(request).execute();
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final ResponseBody body = response.body();
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if (response.code() == 429) {
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throw new ReCaptchaException("reCaptcha Challenge requested", siteUrl);
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}
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if (body == null) {
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response.close();
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return null;
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}
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return body.byteStream();
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} catch (final ReCaptchaException e) {
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throw new IOException(e.getMessage(), e.getCause());
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}
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}
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@Override
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public Response execute(@NonNull final Request request)
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throws IOException, ReCaptchaException {
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final String httpMethod = request.httpMethod();
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final String url = request.url();
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final Map<String, List<String>> headers = request.headers();
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final byte[] dataToSend = request.dataToSend();
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RequestBody requestBody = null;
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if (dataToSend != null) {
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requestBody = RequestBody.create(null, dataToSend);
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}
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final okhttp3.Request.Builder requestBuilder = new okhttp3.Request.Builder()
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.method(httpMethod, requestBody).url(url)
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.addHeader("User-Agent", USER_AGENT);
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final String cookies = getCookies(url);
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if (!cookies.isEmpty()) {
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requestBuilder.addHeader("Cookie", cookies);
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}
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for (final Map.Entry<String, List<String>> pair : headers.entrySet()) {
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final String headerName = pair.getKey();
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final List<String> headerValueList = pair.getValue();
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if (headerValueList.size() > 1) {
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requestBuilder.removeHeader(headerName);
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for (final String headerValue : headerValueList) {
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requestBuilder.addHeader(headerName, headerValue);
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}
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} else if (headerValueList.size() == 1) {
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requestBuilder.header(headerName, headerValueList.get(0));
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}
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}
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final okhttp3.Response response = client.newCall(requestBuilder.build()).execute();
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if (response.code() == 429) {
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response.close();
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throw new ReCaptchaException("reCaptcha Challenge requested", url);
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}
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final ResponseBody body = response.body();
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String responseBodyToReturn = null;
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if (body != null) {
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responseBodyToReturn = body.string();
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}
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final String latestUrl = response.request().url().toString();
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return new Response(response.code(), response.message(), response.headers().toMultimap(),
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responseBodyToReturn, latestUrl);
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}
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}
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