Merging qBittorrent adapter fixes with support for 3.2+, added proper version number retrieval.

app/src/main/java/org/transdroid/daemon/Qbittorrent/QbittorrentAdapter.java

@@ -17,24 +17,18 @@
  */
 package org.transdroid.daemon.Qbittorrent;
 
-import java.io.File;
-import java.io.FileNotFoundException;
-import java.io.UnsupportedEncodingException;
-import java.net.URI;
-import java.net.URLEncoder;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.List;
+import com.android.internalcopy.http.multipart.FilePart;
+import com.android.internalcopy.http.multipart.MultipartEntity;
+import com.android.internalcopy.http.multipart.Part;
 
 import org.apache.http.HttpEntity;
 import org.apache.http.HttpResponse;
 import org.apache.http.NameValuePair;
 import org.apache.http.client.entity.UrlEncodedFormEntity;
 import org.apache.http.client.methods.HttpPost;
+import org.apache.http.cookie.Cookie;
 import org.apache.http.impl.client.DefaultHttpClient;
 import org.apache.http.message.BasicNameValuePair;
-import org.apache.http.client.CookieStore;
-import org.apache.http.cookie.Cookie;
 import org.apache.http.protocol.HTTP;
 import org.json.JSONArray;
 import org.json.JSONException;
@@ -42,6 +36,7 @@ import org.json.JSONObject;
 import org.transdroid.core.gui.log.Log;
 import org.transdroid.daemon.Daemon;
 import org.transdroid.daemon.DaemonException;
+import org.transdroid.daemon.DaemonException.ExceptionType;
 import org.transdroid.daemon.DaemonSettings;
 import org.transdroid.daemon.IDaemonAdapter;
 import org.transdroid.daemon.Priority;
@@ -49,7 +44,6 @@ import org.transdroid.daemon.Torrent;
 import org.transdroid.daemon.TorrentDetails;
 import org.transdroid.daemon.TorrentFile;
 import org.transdroid.daemon.TorrentStatus;
-import org.transdroid.daemon.DaemonException.ExceptionType;
 import org.transdroid.daemon.task.AddByFileTask;
 import org.transdroid.daemon.task.AddByMagnetUrlTask;
 import org.transdroid.daemon.task.AddByUrlTask;
@@ -67,9 +61,15 @@ import org.transdroid.daemon.task.RetrieveTaskSuccessResult;
 import org.transdroid.daemon.task.SetFilePriorityTask;
 import org.transdroid.daemon.task.SetTransferRatesTask;
 import org.transdroid.daemon.util.HttpHelper;
-import com.android.internalcopy.http.multipart.FilePart;
-import com.android.internalcopy.http.multipart.MultipartEntity;
-import com.android.internalcopy.http.multipart.Part;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.UnsupportedEncodingException;
+import java.net.URI;
+import java.net.URLEncoder;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
 
 /**
  * The daemon adapter for the qBittorrent torrent client.
@@ -89,36 +89,40 @@ public class QbittorrentAdapter implements IDaemonAdapter {
 	}
 
 	private synchronized void ensureVersion(Log log) throws DaemonException {
-		if (version > 0)
+		// Still need to retrieve the API and qBittorrent version numbers from the server?
+		if (version > 0 && apiVersion > 0)
 			return;
-		// We still need to retrieve the version number from the server
-		// Do this by getting the web interface about page and trying to parse the version number
-		// Format is something like 'qBittorrent v2.9.7 (Web UI)'
 
+		try {
+
+			// The API version is only supported since qBittorrent 3.2, so otherwise we assume version 1
 			try {
 				String apiVerText = makeRequest(log, "/version/api");
 				apiVersion = Integer.parseInt(apiVerText.trim());
-		}
-		catch (DaemonException e) {
+			} catch (DaemonException | NumberFormatException e) {
 				apiVersion = 1;
 			}
-		catch (NumberFormatException e) {
-			apiVersion = 1;
-		}
-
 			log.d(LOG_NAME, "qBittorrent API version is " + apiVersion);
 
-		// TODO:  In API ver 2, query this information from /version/qbittorrent instead.
-		// For now at least this works fine, though
+			// The qBittorent version is only supported since 3.2; for earlier versions we parse the about dialog and parse it
+			String versionText = "";
+			if (apiVersion > 1) {
+				// Format is something like 'v3.2.0'
+				versionText = makeRequest(log, "/version/qbittorrent").substring(1);
+			} else {
+				// Format is something like 'qBittorrent v2.9.7 (Web UI)' or 'qBittorrent v3.0.0-alpha5 (Web UI)'
 				String about = makeRequest(log, "/about.html");
 				String aboutStartText = "qBittorrent v";
 				String aboutEndText = " (Web UI)";
 				int aboutStart = about.indexOf(aboutStartText);
 				int aboutEnd = about.indexOf(aboutEndText);
-		try {
 				if (aboutStart >= 0 && aboutEnd > aboutStart) {
+					versionText = about.substring(aboutStart + aboutStartText.length(), aboutEnd);
+				}
+			}
+
 			// String found: now parse a version like 2.9.7 as a number like 20907 (allowing 10 places for each .)
-				String[] parts = about.substring(aboutStart + aboutStartText.length(), aboutEnd).split("\\.");
+			String[] parts = versionText.split("\\.");
 			if (parts.length > 0) {
 				version = Integer.parseInt(parts[0]) * 100 * 100;
 				if (parts.length > 1) {
@@ -141,14 +145,15 @@ public class QbittorrentAdapter implements IDaemonAdapter {
 					}
 				}
 			}
-			}
-		} catch (NumberFormatException e) {
-		}
+
+		} catch (Exception e) {
 			// Unable to establish version number; assume an old version by setting it to version 1
 			version = 10000;
 			apiVersion = 1;
 		}
 
+	}
+
 	private synchronized void ensureAuthenticated(Log log) throws DaemonException {
 		// API changed in 3.2.0, login is now handled by its own request, which provides you a cookie.
 		// If we don't have that cookie, let's try and get it.
@@ -166,8 +171,7 @@ public class QbittorrentAdapter implements IDaemonAdapter {
 			}
 		}
 
-		makeRequest(log, "/login", 
-				new BasicNameValuePair("username", settings.getUsername()),
+		makeRequest(log, "/login", new BasicNameValuePair("username", settings.getUsername()),
 				new BasicNameValuePair("password", settings.getPassword()));
 		// The HttpClient will automatically remember the cookie for us, no need to parse it out.
 
@@ -210,17 +214,16 @@ public class QbittorrentAdapter implements IDaemonAdapter {
 
 					// Request tracker and error details for a specific teacher
 					String mhash = task.getTargetTorrent().getUniqueID();
-				JSONArray messages = new JSONArray(makeRequest(log,
-					(version >= 30200 ? "/query/propertiesTrackers/" : "/json/propertiesTrackers/") + mhash));
-				return new GetTorrentDetailsTaskSuccessResult((GetTorrentDetailsTask) task,
-						parseJsonTorrentDetails(messages));
+					JSONArray messages =
+							new JSONArray(makeRequest(log, (version >= 30200 ? "/query/propertiesTrackers/" : "/json/propertiesTrackers/") + mhash));
+					return new GetTorrentDetailsTaskSuccessResult((GetTorrentDetailsTask) task, parseJsonTorrentDetails(messages));
 
 				case GetFileList:
 
 					// Request files listing for a specific torrent
 					String fhash = task.getTargetTorrent().getUniqueID();
-				JSONArray files = new JSONArray(makeRequest(log, 
-					(version >= 30200 ? "/query/propertiesFiles/" : "/json/propertiesFiles/") + fhash));
+					JSONArray files =
+							new JSONArray(makeRequest(log, (version >= 30200 ? "/query/propertiesFiles/" : "/json/propertiesFiles/") + fhash));
 					return new GetFileListTaskSuccessResult((GetFileListTask) task, parseJsonFiles(files));
 
 				case AddByFile:
@@ -290,9 +293,8 @@ public class QbittorrentAdapter implements IDaemonAdapter {
 					}
 					// We have to make a separate request per file, it seems
 					for (TorrentFile file : setPrio.getForFiles()) {
-					makeRequest(log, "/command/setFilePrio", new BasicNameValuePair("hash", task.getTargetTorrent()
-							.getUniqueID()), new BasicNameValuePair("id", file.getKey()), new BasicNameValuePair(
-							"priority", newPrio));
+						makeRequest(log, "/command/setFilePrio", new BasicNameValuePair("hash", task.getTargetTorrent().getUniqueID()),
+								new BasicNameValuePair("id", file.getKey()), new BasicNameValuePair("priority", newPrio));
 					}
 					return new DaemonTaskSuccessResult(task);
 
@@ -308,13 +310,12 @@ public class QbittorrentAdapter implements IDaemonAdapter {
 					JSONObject prefs = new JSONObject(makeRequest(log, "/json/preferences"));
 					prefs.put("dl_limit", dl);
 					prefs.put("up_limit", ul);
-				makeRequest(log, "/command/setPreferences",
-						new BasicNameValuePair("json", URLEncoder.encode(prefs.toString(), HTTP.UTF_8)));
+					makeRequest(log, "/command/setPreferences", new BasicNameValuePair("json", URLEncoder.encode(prefs.toString(), HTTP.UTF_8)));
 					return new DaemonTaskSuccessResult(task);
 
 				default:
-				return new DaemonTaskFailureResult(task, new DaemonException(ExceptionType.MethodUnsupported,
-						task.getMethod() + " is not supported by " + getType()));
+					return new DaemonTaskFailureResult(task,
+							new DaemonException(ExceptionType.MethodUnsupported, task.getMethod() + " is not supported by " + getType()));
 			}
 		} catch (JSONException e) {
 			return new DaemonTaskFailureResult(task, new DaemonException(ExceptionType.ParsingFailed, e.toString()));
@@ -331,7 +332,7 @@ public class QbittorrentAdapter implements IDaemonAdapter {
 
 			// Setup request using POST
 			HttpPost httppost = new HttpPost(buildWebUIUrl(path));
-			List<NameValuePair> nvps = new ArrayList<NameValuePair>();
+			List<NameValuePair> nvps = new ArrayList<>();
 			Collections.addAll(nvps, params);
 			httppost.setEntity(new UrlEncodedFormEntity(nvps, HTTP.UTF_8));
 			return makeWebRequest(httppost, log);
@@ -414,8 +415,8 @@ public class QbittorrentAdapter implements IDaemonAdapter {
 
 	private TorrentDetails parseJsonTorrentDetails(JSONArray messages) throws JSONException {
 
-		ArrayList<String> trackers = new ArrayList<String>();
-		ArrayList<String> errors = new ArrayList<String>();
+		ArrayList<String> trackers = new ArrayList<>();
+		ArrayList<String> errors = new ArrayList<>();
 
 		// Parse response
 		if (messages.length() > 0) {
@@ -436,7 +437,7 @@ public class QbittorrentAdapter implements IDaemonAdapter {
 	private ArrayList<Torrent> parseJsonTorrents(JSONArray response) throws JSONException {
 
 		// Parse response
-		ArrayList<Torrent> torrents = new ArrayList<Torrent>();
+		ArrayList<Torrent> torrents = new ArrayList<>();
 		for (int i = 0; i < response.length(); i++) {
 			JSONObject tor = response.getJSONObject(i);
 			int leechers[] = parsePeers(tor.getString("num_leechs"));
@@ -533,8 +534,7 @@ public class QbittorrentAdapter implements IDaemonAdapter {
 		// In some situations it it just a "6" string
 		String[] parts = seeds.split(" ");
 		if (parts.length > 1) {
-			return new int[] { Integer.parseInt(parts[0]),
-					Integer.parseInt(parts[1].substring(1, parts[1].length() - 1)) };
+			return new int[]{Integer.parseInt(parts[0]), Integer.parseInt(parts[1].substring(1, parts[1].length() - 1))};
 		}
 		return new int[]{Integer.parseInt(parts[0]), Integer.parseInt(parts[0])};
 	}
@@ -612,8 +612,8 @@ public class QbittorrentAdapter implements IDaemonAdapter {
 				size = parseSize(file.getString("size"));
 			}
 
-			torrentfiles.add(new TorrentFile("" + i, file.getString("name"), null, null, size, (long) (size * file
-					.getDouble("progress")), parsePriority(file.getInt("priority"))));
+			torrentfiles.add(new TorrentFile("" + i, file.getString("name"), null, null, size, (long) (size * file.getDouble("progress")),
+					parsePriority(file.getInt("priority"))));
 		}
 
 		// Return the list