Downloader.java

package com.dubture.getcomposer.packages;

import java.io.InputStream;

import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.impl.client.DefaultHttpClient;

public class Downloader extends AbstractDownloader {
	
	private HttpGet httpGet;
	
	public Downloader() {
		super();
	}
	
	public Downloader(String url) {
		super(url);
	}

	public InputStream download() {
		HttpClient client = new DefaultHttpClient();
		InputStream content = null;

		try {

			//if (url.startsWith("https://packagist.org") || url.startsWith("https://getcomposer.org")) {
			if (url.startsWith("https://")) {
				registerSSLContext(client);
			}
	
			httpGet = new HttpGet(url);
			HttpResponse response = null;
	
			if (httpGet.isAborted()) {
				httpGet.abort();
				
				if (httpGet.isAborted()) {
					return null;
				}
			}
	
			response = client.execute(httpGet);
	
			if (httpGet.isAborted()) {
				for (DownloadListenerInterface listener : listeners) {
					listener.aborted(url);
				}
				return null;
			}
	
			HttpEntity entity = response.getEntity();
			content = entity.getContent();
	
			for (DownloadListenerInterface listener : listeners) {
				listener.dataReceived(content, url);
			}
	
		} catch (Exception e) {
			for (DownloadListenerInterface listener : listeners) {
				listener.errorOccured(e);
			}
		}
		return content;
	}
	
	private void registerSSLContext(HttpClient client) throws Exception {	
		X509TrustManager tm = new ComposerTrustManager();
		SSLContext ctx = SSLContext.getInstance("TLS");
		ctx.init(null, new TrustManager[]{tm}, null);
		SSLSocketFactory ssf = new SSLSocketFactory(ctx, SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
		ClientConnectionManager ccm = client.getConnectionManager();
		SchemeRegistry sr = ccm.getSchemeRegistry();
		sr.register(new Scheme("https", 443, ssf));
	}

	public void abort() {
		if (httpGet != null) {
			httpGet.abort();
		}
	}
}