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/*
* Sonar, open source software quality management tool.
* Copyright (C) 2008-2011 SonarSource
* mailto:contact AT sonarsource DOT com
*
* Sonar is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* Sonar 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Sonar; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02
*/
package org.sonar.api.utils;
import com.google.common.base.Joiner;
import com.google.common.collect.Lists;
import org.apache.commons.configuration.Configuration;
import org.apache.commons.configuration.PropertiesConfiguration;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;
import org.slf4j.LoggerFactory;
import org.sonar.api.BatchComponent;
import org.sonar.api.ServerComponent;
import org.sonar.api.platform.Server;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.*;
import java.util.List;
/**
* This component downloads HTTP files
*
* @since 2.2
*/
public class HttpDownloader implements BatchComponent, ServerComponent {
public static final int TIMEOUT_MILLISECONDS = 20 * 1000;
private String userAgent;
public HttpDownloader(Server server, Configuration configuration) {
this(configuration, server.getVersion());
}
public HttpDownloader(Configuration configuration) {
this(configuration, null);
}
/**
* Should be package protected for unit tests only, but public is still required for jacoco 0.2.
*/
public HttpDownloader() {
this(new PropertiesConfiguration(), null);
}
private HttpDownloader(Configuration configuration, String userAgent) {
initProxy(configuration);
initUserAgent(userAgent);
}
private void initProxy(Configuration configuration) {
propagateProxySystemProperties(configuration);
if (requiresProxyAuthentication(configuration)) {
registerProxyCredentials(configuration);
}
}
private void initUserAgent(String sonarVersion) {
String userAgent = (sonarVersion == null ? "Sonar" : String.format("Sonar %s", sonarVersion));
System.setProperty("http.agent", userAgent);
this.userAgent = userAgent;
}
public String getProxySynthesis(URI uri) {
return getProxySynthesis(uri, ProxySelector.getDefault());
}
static String getProxySynthesis(URI uri, ProxySelector proxySelector) {
List<String> descriptions = Lists.newArrayList();
List<Proxy> proxies = proxySelector.select(uri);
if (proxies.size() == 1 && proxies.get(0).type().equals(Proxy.Type.DIRECT)) {
descriptions.add("no proxy");
} else {
for (Proxy proxy : proxies) {
if (!proxy.type().equals(Proxy.Type.DIRECT)) {
descriptions.add("proxy: " + proxy.address().toString());
}
}
}
return Joiner.on(", ").join(descriptions);
}
private void registerProxyCredentials(Configuration configuration) {
Authenticator.setDefault(new ProxyAuthenticator(configuration.getString("http.proxyUser"), configuration
.getString("http.proxyPassword")));
}
private boolean requiresProxyAuthentication(Configuration configuration) {
return configuration.getString("http.proxyUser") != null;
}
private void propagateProxySystemProperties(Configuration configuration) {
propagateSystemProperty(configuration, "http.proxyHost");
propagateSystemProperty(configuration, "http.proxyPort");
propagateSystemProperty(configuration, "http.nonProxyHosts");
propagateSystemProperty(configuration, "http.auth.ntlm.domain");
propagateSystemProperty(configuration, "socksProxyHost");
propagateSystemProperty(configuration, "socksProxyPort");
}
private void propagateSystemProperty(Configuration configuration, String key) {
if (configuration.getString(key) != null) {
System.setProperty(key, configuration.getString(key));
}
}
public void download(URI uri, File toFile) {
InputStream input = null;
FileOutputStream output = null;
try {
HttpURLConnection connection = newHttpConnection(uri);
output = new FileOutputStream(toFile, false);
input = connection.getInputStream();
IOUtils.copy(input, output);
} catch (Exception e) {
IOUtils.closeQuietly(output);
FileUtils.deleteQuietly(toFile);
throw new SonarException("Fail to download the file: " + uri + " (" + getProxySynthesis(uri) + ")", e);
} finally {
IOUtils.closeQuietly(input);
IOUtils.closeQuietly(output);
}
}
public byte[] download(URI uri) {
InputStream input = null;
try {
HttpURLConnection connection = newHttpConnection(uri);
input = connection.getInputStream();
return IOUtils.toByteArray(input);
} catch (Exception e) {
throw new SonarException("Fail to download the file: " + uri + " (" + getProxySynthesis(uri) + ")", e);
} finally {
IOUtils.closeQuietly(input);
}
}
public InputStream openStream(URI uri) {
try {
HttpURLConnection connection = newHttpConnection(uri);
return connection.getInputStream();
} catch (Exception e) {
throw new SonarException("Fail to download the file: " + uri + " (" + getProxySynthesis(uri) + ")", e);
}
}
private HttpURLConnection newHttpConnection(URI uri) throws IOException {
LoggerFactory.getLogger(getClass()).debug("Download: " + uri + " (" + getProxySynthesis(uri) + ")");
HttpURLConnection connection = (HttpURLConnection) uri.toURL().openConnection();
connection.setConnectTimeout(TIMEOUT_MILLISECONDS);
connection.setReadTimeout(TIMEOUT_MILLISECONDS);
connection.setUseCaches(true);
connection.setInstanceFollowRedirects(true);
connection.setRequestProperty("User-Agent", userAgent);
return connection;
}
}
class ProxyAuthenticator extends Authenticator {
private PasswordAuthentication auth;
ProxyAuthenticator(String user, String password) {
auth = new PasswordAuthentication(user, password == null ? new char[0] : password.toCharArray());
}
protected PasswordAuthentication getPasswordAuthentication() {
return auth;
}
}
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