nya.miku.wishmaster.http.recaptcha.Recaptcha.java Source code

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Here is the source code for nya.miku.wishmaster.http.recaptcha.Recaptcha.java

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/*
 * Overchan Android (Meta Imageboard Client)
 * Copyright (C) 2014-2015  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 org.apache.http.client.HttpClient;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;

/**
 *  .    , ?  obtain.
 * @author miku-nyan
 *
 */

/* Google  ? ??  ?  org.apache.http  "deprecated"  API 22 (Android 5.1)
 * ? ?  ??? ? ?? apache-hc httpclient 4.3.5.1-android
 * ?: https://issues.apache.org/jira/browse/HTTPCLIENT-1632 */
@SuppressWarnings("deprecation")

public class Recaptcha {
    // ?   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);
        }
    }, };

    /**  ?  */
    public Bitmap bitmap;
    /**  challenge */
    public String challenge;

    /**
     *   
     * @param publicKey  
     * @param task ,   
     * @param httpClient , ? ? ? ?
     * @param scheme  (http  https), ? null,   "http"
     * @return  
     */
    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.builder().setGET().build(), 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() {
    }
}