/*
* This file is part of Transdroid Torrent Search
* <http://code.google.com/p/transdroid-search/>
*
* Transdroid Torrent Search is free software: you can redistribute
* it and/or modify it under the terms of the GNU Lesser General
* Public License as published by the Free Software Foundation,
* either version 3 of the License, or (at your option) any later
* version.
*
* Transdroid Torrent Search is distributed in the hope that it will
* be useful, but WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Transdroid. If not, see <http://www.gnu.org/licenses/>.
*/
package org.transdroid.search.HoundDawgs;
import android.content.SharedPreferences;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.message.BasicNameValuePair;
import org.transdroid.search.ISearchAdapter;
import org.transdroid.search.SearchResult;
import org.transdroid.search.SortOrder;
import org.transdroid.search.TorrentSite;
import org.transdroid.search.gui.SettingsHelper;
import org.transdroid.util.HttpHelper;
import java.io.InputStream;
import java.net.URLEncoder;
import java.security.InvalidParameterException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
import javax.security.auth.login.LoginException;
/**
* An adapter that provides access to HoundDawgs searches by parsing the raw HTML output.
*/
public class HoundDawgsAdapter implements ISearchAdapter {
private static final String LOGINURL = "https://hounddawgs.org";
private static final String QUERYURL = "https://hounddawgs.org/torrents.php?searchstr=%1$s%2$s";
private static final String SORT_COMPOSITE = "";
private static final String SORT_SEEDS = "&order_way=DESC&order_by=s6";
private HttpClient prepareRequest(SharedPreferences prefs) throws Exception {
String username = SettingsHelper.getSiteUser(prefs, TorrentSite.HoundDawgs);
String password = SettingsHelper.getSitePass(prefs, TorrentSite.HoundDawgs);
if (username == null || password == null) {
throw new InvalidParameterException("No username or password was provided, while this is required for this private site.");
}
// Setup http client
HttpClient httpclient = HttpHelper.buildDefaultSearchHttpClient(false);
// First log in
HttpPost loginPost = new HttpPost(LOGINURL);
loginPost.setEntity(new UrlEncodedFormEntity(
Arrays.asList(new BasicNameValuePair("username", username), new BasicNameValuePair("password", password),
new BasicNameValuePair("Login", "login"))));
HttpResponse loginResult = httpclient.execute(loginPost);
String loginHtml = HttpHelper.convertStreamToString(loginResult.getEntity().getContent());
final String LOGIN_ERROR = "<li><a href=\"login.php\">Login</a></li>";
if (loginResult.getStatusLine().getStatusCode() != HttpStatus.SC_OK || loginHtml.indexOf(LOGIN_ERROR) >= 0) {
// Failed to sign in
throw new LoginException("Login failure for HoundDawgs with user " + username);
}
return httpclient;
}
@Override
public List<SearchResult> search(SharedPreferences prefs, String query, SortOrder order, int maxResults) throws Exception {
HttpClient httpclient = prepareRequest(prefs);
// Build a search request parameters
final String url = String.format(QUERYURL, URLEncoder.encode(query, "UTF-8"), (order == SortOrder.BySeeders ? SORT_SEEDS : SORT_COMPOSITE));
// Start synchronous search
HttpGet httpget = new HttpGet(url);
HttpResponse response = httpclient.execute(httpget);
// Read HTML response
InputStream instream = response.getEntity().getContent();
String html = HttpHelper.convertStreamToString(instream);
instream.close();
return parseHtml(html, maxResults);
}
@Override
public InputStream getTorrentFile(SharedPreferences prefs, String url) throws Exception {
// Provide an authenticated file handle to the requested url
HttpClient httpclient = prepareRequest(prefs);
HttpResponse response = httpclient.execute(new HttpGet(url));
return response.getEntity().getContent();
}
protected List<SearchResult> parseHtml(String html, int maxResults) throws Exception {
// Texts to find subsequently
final String NOTORRENTS = "Din søgning gav intet resultat";
final String RESULTS = "torrent_table";
final String TORRENT = "<tr class=\"torrent\">\n";
// Parse the search results from HTML by looking for the identifying texts
List<SearchResult> results = new ArrayList<>();
if (html.contains(NOTORRENTS)) {
return results; // Success, but no results for this query
}
int resultsStart = html.indexOf(RESULTS) + RESULTS.length();
int torStart = html.indexOf(TORRENT, resultsStart);
while (torStart >= 0 && results.size() < maxResults) {
int nextTorrentIndex = html.indexOf(TORRENT, torStart + TORRENT.length());
if (nextTorrentIndex >= 0) {
results.add(parseHtmlItem(html.substring(torStart + TORRENT.length(), nextTorrentIndex)));
} else {
results.add(parseHtmlItem(html.substring(torStart + TORRENT.length())));
}
torStart = nextTorrentIndex;
}
return results;
}
private SearchResult parseHtmlItem(String htmlItem) {
// Texts to find subsequently
final String LINK = "<a href=\"";
final String LINK_END = "\" title";
final String DETAILS1 = "<a href=\"torrents.php";
final String DETAILS2 = "<a href=\"";
final String DETAILS_END = "\" ";
final String NAME = "\">";
final String NAME_END = "</a>";
final String DATE = "<span class=\"time\" title=\"";
final String DATE_END = "\">";
final String SIZE = "<center>";
final String SIZE_END = "</center>";
final String SEEDERS = "<td>";
final String SEEDERS_END = "</td>";
final String LEECHERS = "<center>";
final String LEECHERS_END = "</center>";
String prefix = "https://hounddawgs.org/";
final DateFormat parseDateFormat = new SimpleDateFormat("MMM dd yyyy, HH:mm");
int linkStart = htmlItem.indexOf(LINK) + LINK.length();
String link = htmlItem.substring(linkStart, htmlItem.indexOf(LINK_END, linkStart));
link = prefix + link;
int detailsStart = htmlItem.indexOf(DETAILS1, linkStart) + DETAILS2.length();
String details = htmlItem.substring(detailsStart, htmlItem.indexOf(DETAILS_END, detailsStart));
details = prefix + details;
int nameStart = htmlItem.indexOf(NAME, detailsStart) + NAME.length();
String name = htmlItem.substring(nameStart, htmlItem.indexOf(NAME_END, nameStart));
int dateStart = htmlItem.indexOf(DATE, linkStart) + DATE.length();
String dateString = htmlItem.substring(dateStart, htmlItem.indexOf(DATE_END, dateStart));
Date date = null;
try {
date = parseDateFormat.parse(dateString);
} catch (Exception e) {
// Ignore; just leave date null
}
int sizeStart = htmlItem.indexOf(SIZE, dateStart) + SIZE.length();
String size = htmlItem.substring(sizeStart, htmlItem.indexOf(SIZE_END, sizeStart));
int seedersStart = htmlItem.indexOf(SEEDERS, sizeStart) + SEEDERS.length();
int seeders = 0;
if (seedersStart >= 0) {
try {
String seedersText = htmlItem.substring(seedersStart, htmlItem.indexOf(SEEDERS_END, seedersStart));
seeders = Integer.parseInt(seedersText);
} catch (Exception e) {
// Number of seeders not found; ignore
}
}
int leechersStart = htmlItem.indexOf(LEECHERS, seedersStart) + LEECHERS.length();
int leechers = 0;
if (leechersStart >= 0) {
try {
String leechersText = htmlItem.substring(leechersStart, htmlItem.indexOf(LEECHERS_END, leechersStart));
leechers = Integer.parseInt(leechersText);
} catch (Exception e) {
// Number of seeders not found; ignore
}
}
return new SearchResult(name, link, details, size, date, seeders, leechers);
}
@Override
public String buildRssFeedUrlFromSearch(String query, SortOrder order) {
// HoundDawgs doesn't support RSS feed-based searches
return null;
}
@Override
public String getSiteName() {
return "HoundDawgs";
}
@Override
public boolean isPrivateSite() {
return true;
}
@Override
public boolean usesToken() {
return false;
}
}