Java tutorial
/* * Everychan Android (Meta Imageboard Client) * Copyright (C) 2014-2016 miku-nyan <https://github.com/miku-nyan> * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package com.nttec.everychan.chans.cirno; import java.io.ByteArrayOutputStream; import java.util.ArrayList; import java.util.Arrays; import java.util.List; import cz.msebera.android.httpclient.Header; import cz.msebera.android.httpclient.HttpHeaders; import cz.msebera.android.httpclient.NameValuePair; import cz.msebera.android.httpclient.client.entity.UrlEncodedFormEntity; import cz.msebera.android.httpclient.cookie.Cookie; import cz.msebera.android.httpclient.impl.cookie.BasicClientCookie; import cz.msebera.android.httpclient.message.BasicNameValuePair; import android.content.SharedPreferences; import android.content.res.Resources; import android.graphics.drawable.Drawable; import android.support.v4.content.res.ResourcesCompat; import com.nttec.everychan.R; import com.nttec.everychan.api.AbstractChanModule; import com.nttec.everychan.api.interfaces.CancellableTask; import com.nttec.everychan.api.interfaces.ProgressListener; import com.nttec.everychan.api.models.BoardModel; import com.nttec.everychan.api.models.CaptchaModel; import com.nttec.everychan.api.models.DeletePostModel; import com.nttec.everychan.api.models.PostModel; import com.nttec.everychan.api.models.SendPostModel; import com.nttec.everychan.api.models.SimpleBoardModel; import com.nttec.everychan.api.models.ThreadModel; import com.nttec.everychan.api.models.UrlPageModel; import com.nttec.everychan.api.util.ChanModels; import com.nttec.everychan.api.util.WakabaUtils; import com.nttec.everychan.common.IOUtils; import com.nttec.everychan.http.ExtendedMultipartBuilder; import com.nttec.everychan.http.streamer.HttpRequestModel; import com.nttec.everychan.http.streamer.HttpResponseModel; import com.nttec.everychan.http.streamer.HttpStreamer; import com.nttec.everychan.http.streamer.HttpWrongStatusCodeException; import com.nttec.everychan.lib.org_json.JSONObject; public class Chan410Module extends AbstractChanModule { static final String CHAN410_NAME = "410chan.org"; static final String CHAN410_DOMAIN = "410chan.org"; static final String CHAN410_URL = "http://" + CHAN410_DOMAIN + "/"; private static final String PREF_KEY_FAPTCHA_COOKIES = "PREF_KEY_FAPTCHA_COOKIES"; public Chan410Module(SharedPreferences preferences, Resources resources) { super(preferences, resources); } @Override public String getChanName() { return CHAN410_NAME; } @Override public String getDisplayingName() { return "410chan"; } @Override public Drawable getChanFavicon() { return ResourcesCompat.getDrawable(resources, R.drawable.favicon_410chan, null); } @Override protected void initHttpClient() { JSONObject savedCookies = new JSONObject( preferences.getString(getSharedKey(PREF_KEY_FAPTCHA_COOKIES), "{}")); for (String board : Chan410Boards.ALL_BOARDS_SET) { String value = savedCookies.optString(board); if (value != null && value.length() > 0) { BasicClientCookie c = new BasicClientCookie(board, value); c.setDomain("." + CHAN410_DOMAIN); c.setPath("/"); httpClient.getCookieStore().addCookie(c); } } } private void saveFaptchaCookies() { JSONObject savedCookies = new JSONObject(); List<Cookie> cookies = httpClient.getCookieStore().getCookies(); for (Cookie cookie : cookies) { if (cookie.getName().length() <= 3 && Chan410Boards.ALL_BOARDS_SET.contains(cookie.getName())) { savedCookies.put(cookie.getName(), cookie.getValue()); } } preferences.edit().putString(getSharedKey(PREF_KEY_FAPTCHA_COOKIES), savedCookies.toString()).commit(); } @Override public SimpleBoardModel[] getBoardsList(ProgressListener listener, CancellableTask task, SimpleBoardModel[] oldBoardsList) throws Exception { return Chan410Boards.getBoardsList(); } @Override public BoardModel getBoard(String shortName, ProgressListener listener, CancellableTask task) throws Exception { return Chan410Boards.getBoard(shortName); } private ThreadModel[] readWakabaPage(String url, ProgressListener listener, CancellableTask task, boolean checkIfModified, boolean isInt) throws Exception { HttpResponseModel responseModel = null; Chan410Reader in = null; HttpRequestModel rqModel = HttpRequestModel.builder().setGET().setCheckIfModified(checkIfModified).build(); try { responseModel = HttpStreamer.getInstance().getFromUrl(url, rqModel, httpClient, listener, task); if (responseModel.statusCode == 200) { in = isInt ? new Chan410IntReader(responseModel.stream) : new Chan410Reader(responseModel.stream); if (task != null && task.isCancelled()) throw new Exception("interrupted"); return in.readWakabaPage(); } else { if (responseModel.notModified()) return null; throw new HttpWrongStatusCodeException(responseModel.statusCode, responseModel.statusCode + " - " + responseModel.statusReason); } } catch (Exception e) { if (responseModel != null) HttpStreamer.getInstance().removeFromModifiedMap(url); throw e; } finally { IOUtils.closeQuietly(in); if (responseModel != null) responseModel.release(); } } @Override public ThreadModel[] getThreadsList(String boardName, int page, ProgressListener listener, CancellableTask task, ThreadModel[] oldList) throws Exception { UrlPageModel urlModel = new UrlPageModel(); urlModel.chanName = CHAN410_NAME; urlModel.type = UrlPageModel.TYPE_BOARDPAGE; urlModel.boardName = boardName; urlModel.boardPage = page; String url = buildUrl(urlModel); ThreadModel[] threads = readWakabaPage(url, listener, task, oldList != null, boardName.equals("int")); if (threads == null) { return oldList; } else { return threads; } } @Override public PostModel[] getPostsList(String boardName, String threadNumber, ProgressListener listener, CancellableTask task, PostModel[] oldList) throws Exception { UrlPageModel urlModel = new UrlPageModel(); urlModel.chanName = CHAN410_NAME; urlModel.type = UrlPageModel.TYPE_THREADPAGE; urlModel.boardName = boardName; urlModel.threadNumber = threadNumber; String url = buildUrl(urlModel); ThreadModel[] threads = readWakabaPage(url, listener, task, oldList != null, boardName.equals("int")); if (threads == null) { return oldList; } else { if (threads.length == 0) throw new Exception("Unable to parse response"); return oldList == null ? threads[0].posts : ChanModels.mergePostsLists(Arrays.asList(oldList), Arrays.asList(threads[0].posts)); } } @Override public CaptchaModel getNewCaptcha(String boardName, String threadNumber, ProgressListener listener, CancellableTask task) throws Exception { String checkUrl = CHAN410_URL + "api_adaptive.php?board=" + boardName; if (HttpStreamer.getInstance() .getStringFromUrl(checkUrl, HttpRequestModel.DEFAULT_GET, httpClient, listener, task, false).trim() .equals("1")) return null; String captchaUrl = CHAN410_URL + "faptcha.php?board=" + boardName; return downloadCaptcha(captchaUrl, listener, task); } @Override public String sendPost(SendPostModel model, ProgressListener listener, CancellableTask task) throws Exception { String url = CHAN410_URL + "board.php"; ExtendedMultipartBuilder postEntityBuilder = ExtendedMultipartBuilder.create().setDelegates(listener, task) .addString("board", model.boardName) .addString("replythread", model.threadNumber != null ? model.threadNumber : "0") .addString("name", model.name).addString("faptcha", model.captchaAnswer) .addString("subject", model.subject).addString("message", model.comment) .addString("postpassword", model.password); if (model.sage) postEntityBuilder.addString("sage", "on"); postEntityBuilder.addString("noko", "on"); if (model.attachments != null && model.attachments.length > 0) postEntityBuilder.addFile("imagefile", model.attachments[0], model.randomHash); HttpRequestModel request = HttpRequestModel.builder().setPOST(postEntityBuilder.build()).setNoRedirect(true) .build(); HttpResponseModel response = null; try { response = HttpStreamer.getInstance().getFromUrl(url, request, httpClient, null, task); if (response.statusCode == 302) { for (Header header : response.headers) { if (header != null && HttpHeaders.LOCATION.equalsIgnoreCase(header.getName())) { if (header.getValue().trim().length() == 0) throw new Exception(); return fixRelativeUrl(header.getValue()); } } } else if (response.statusCode == 200) { ByteArrayOutputStream output = new ByteArrayOutputStream(1024); IOUtils.copyStream(response.stream, output); String htmlResponse = output.toString("UTF-8"); if (!htmlResponse.contains("<blockquote")) { int start = htmlResponse .indexOf("<h2 style=\"font-size: 2em;font-weight: bold;text-align: center;\">"); if (start != -1) { int end = htmlResponse.indexOf("</h2>", start + 65); if (end != -1) { throw new Exception(htmlResponse.substring(start + 65, end).trim()); } } } } else throw new Exception(response.statusCode + " - " + response.statusReason); } finally { if (response != null) response.release(); saveFaptchaCookies(); } return null; } @Override public String deletePost(DeletePostModel model, ProgressListener listener, CancellableTask task) throws Exception { String url = CHAN410_URL + "board.php"; List<NameValuePair> pairs = new ArrayList<NameValuePair>(); pairs.add(new BasicNameValuePair("board", model.boardName)); pairs.add(new BasicNameValuePair("delete[]", model.postNumber)); if (model.onlyFiles) pairs.add(new BasicNameValuePair("fileonly", "on")); pairs.add(new BasicNameValuePair("postpassword", model.password)); pairs.add(new BasicNameValuePair("deletepost", "")); HttpRequestModel request = HttpRequestModel.builder().setPOST(new UrlEncodedFormEntity(pairs, "UTF-8")) .setNoRedirect(true).build(); String result = HttpStreamer.getInstance().getStringFromUrl(url, request, httpClient, listener, task, false); if (result.contains("? ")) throw new Exception("? "); return null; } @Override public String reportPost(DeletePostModel model, ProgressListener listener, CancellableTask task) throws Exception { String url = CHAN410_URL + "board.php"; List<NameValuePair> pairs = new ArrayList<NameValuePair>(); pairs.add(new BasicNameValuePair("board", model.boardName)); pairs.add(new BasicNameValuePair("delete[]", model.postNumber)); pairs.add(new BasicNameValuePair("reportpost", "??")); HttpRequestModel request = HttpRequestModel.builder().setPOST(new UrlEncodedFormEntity(pairs, "UTF-8")) .setNoRedirect(true).build(); String result = HttpStreamer.getInstance().getStringFromUrl(url, request, httpClient, listener, task, false); if (result.contains("Post successfully reported")) return null; throw new Exception(result); } @Override public String buildUrl(UrlPageModel model) throws IllegalArgumentException { if (!model.chanName.equals(CHAN410_NAME)) throw new IllegalArgumentException("wrong chan"); return WakabaUtils.buildUrl(model, CHAN410_URL); } @Override public UrlPageModel parseUrl(String url) throws IllegalArgumentException { return WakabaUtils.parseUrl(url, CHAN410_NAME, CHAN410_DOMAIN); } }