/*
* Overchan 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 nya.miku.wishmaster.http.recaptcha;
import java.io.InputStream;
import nya.miku.wishmaster.api.interfaces.CancellableTask;
import nya.miku.wishmaster.http.streamer.HttpRequestModel;
import nya.miku.wishmaster.http.streamer.HttpResponseModel;
import nya.miku.wishmaster.http.streamer.HttpStreamer;
import cz.msebera.android.httpclient.client.HttpClient;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
/**
* Модель рекапчи. Чтобы получить новую капчу, используйте метод obtain.
* @author miku-nyan
*
*/
public class Recaptcha {
// сюда передавать значение Challenge
private static final String RECAPTCHA_IMAGE_URL = "://www.google.com/recaptcha/api/image?c=";
private static interface ChallengeGetter { String get(String key, CancellableTask task, HttpClient httpClient, String scheme) throws Exception; }
private static final ChallengeGetter[] GETTERS = new ChallengeGetter[] {
new ChallengeGetter() {
@Override
public String get(String publicKey, CancellableTask task, HttpClient httpClient, String scheme) throws Exception {
return RecaptchaAjax.getChallenge(publicKey, task, httpClient, scheme);
}
},
new ChallengeGetter() {
@Override
public String get(String publicKey, CancellableTask task, HttpClient httpClient, String scheme) throws Exception {
return RecaptchaNoscript.getChallenge(publicKey, task, httpClient, scheme);
}
},
};
/** картинка с капчей */
public Bitmap bitmap;
/** значение challenge */
public String challenge;
/**
* Получить новую рекапчу
* @param publicKey открытый ключ
* @param task задача, которую можно отменить
* @param httpClient клиент, используемый для выполнения запроса
* @param scheme протокол (http или https), если null, по умолчанию "http"
* @return модель рекапчи
*/
public static Recaptcha obtain(String publicKey, CancellableTask task, HttpClient httpClient, String scheme) throws RecaptchaException {
Exception lastException = null;
if (scheme == null) scheme = "http";
Recaptcha recaptcha = new Recaptcha();
for (ChallengeGetter getter : GETTERS) {
try {
recaptcha.challenge = getter.get(publicKey, task, httpClient, scheme);
HttpResponseModel responseModel = null;
try {
responseModel = HttpStreamer.getInstance().getFromUrl(scheme + RECAPTCHA_IMAGE_URL + recaptcha.challenge,
HttpRequestModel.DEFAULT_GET, httpClient, null, task);
InputStream imageStream = responseModel.stream;
recaptcha.bitmap = BitmapFactory.decodeStream(imageStream);
} finally {
if (responseModel != null) responseModel.release();
}
if (recaptcha.bitmap != null) return recaptcha;
} catch (Exception e) {
lastException = e;
}
}
if (lastException != null) {
if (lastException instanceof RecaptchaException) {
throw (RecaptchaException)lastException;
} else {
throw new RecaptchaException(lastException);
}
} else {
throw new RecaptchaException("Can't get recaptcha");
}
}
private Recaptcha() {}
}