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package com.btr.proxy.search.browser.firefox;
import java.io.IOException;
import java.net.Proxy;
import java.net.ProxySelector;
import java.util.Properties;
import com.btr.proxy.search.ProxySearchStrategy;
import com.btr.proxy.search.desktop.DesktopProxySearchStrategy;
import com.btr.proxy.search.wpad.WpadProxySearchStrategy;
import com.btr.proxy.selector.direct.NoProxySelector;
import com.btr.proxy.selector.misc.ProtocolDispatchSelector;
import com.btr.proxy.selector.whitelist.ProxyBypassListSelector;
import com.btr.proxy.util.Logger;
import com.btr.proxy.util.Logger.LogLevel;
import com.btr.proxy.util.PlatformUtil;
import com.btr.proxy.util.PlatformUtil.Platform;
import com.btr.proxy.util.ProxyException;
import com.btr.proxy.util.ProxyUtil;
/*****************************************************************************
* Loads the Firefox3 proxy settings from the users Firefox3 settings.
* This will load the file <i>prefs.js</i> that is located in the
* <p>
* <i>.mozilla/firefox/(profile)/</i> folder.
* </p>
*
* See <a href="https://developer.mozilla.org/En/Mozilla_Networking_Preferences">Mozilla_Networking_Preferences</a>
* for an explanation of the proxy settings.
* <p>
* The following settings are extracted from
* this file:
* </p>
* Some generic settings:<br/>
* <ul>
* <li><i>network.proxy.type</i> -> n/a = use system settings, 0 = direct, 1 = Fixed proxy settings, 2 = proxy script (PAC), 3 = also direct , 4 = auto detect (WPAD)</li>
* <li><i>network.proxy.share_proxy_settings</i> -> true = use same proxy for all protocols</li>
* <li><i>network.proxy.no_proxies_on</i> -> a comma separated ignore list. </li>
* <li><i>network.proxy.autoconfig_url</i> -> a URL to an proxy configuration script</li>
* </ul>
* Host names and ports per protocol are stored in the following settings:
* <ul>
* <li><i>network.proxy.http</i></li>
* <li><i>network.proxy.http_port</i></li>
* <li><i>network.proxy.ssl</i></li>
* <li><i>network.proxy.ssl_port</i></li>
* <li><i>network.proxy.ftp</i></li>
* <li><i>network.proxy.ftp_port</i></li>
* <li><i>network.proxy.gopher</i></li>
* <li><i>network.proxy.gopher_port</i></li>
* <li><i>network.proxy.socks</i></li>
* <li><i>network.proxy.socks_port</i></li>
* <li><i>network.proxy.socks_version</i> -> 4 or 5</li>
* </u>
* <p>
* Note that if there are more than one profile the first profile found will be used.
* </p>
* @author Bernd Rosstauscher (proxyvole@rosstauscher.de) Copyright 2009
****************************************************************************/
public class FirefoxProxySearchStrategy implements ProxySearchStrategy {
private FirefoxProfileSource profileScanner;
private FirefoxSettingParser settingsParser;
/*************************************************************************
* ProxySelector
* @see java.net.ProxySelector#ProxySelector()
************************************************************************/
public FirefoxProxySearchStrategy() {
super();
if (PlatformUtil.getCurrentPlattform() == Platform.WIN) {
this.profileScanner = new WinFirefoxProfileSource();
} else {
this.profileScanner = new LinuxFirefoxProfileSource();
}
this.settingsParser = new FirefoxSettingParser();
}
/*************************************************************************
* Loads the proxy settings and initializes a proxy selector for the firefox
* proxy settings.
* @return a configured ProxySelector, null if none is found.
* @throws ProxyException on file reading error.
************************************************************************/
public ProxySelector getProxySelector() throws ProxyException {
Logger.log(getClass(), LogLevel.TRACE, "Detecting Firefox settings.");
Properties settings = readSettings();
ProxySelector result = null;
int type = Integer.parseInt(settings.getProperty("network.proxy.type", "-1"));
switch (type) {
case -1: // Use system settings
Logger.log(getClass(), LogLevel.TRACE, "Firefox uses system settings");
result = new DesktopProxySearchStrategy().getProxySelector();
break;
case 0: // Use no proxy
Logger.log(getClass(), LogLevel.TRACE, "Firefox uses no proxy");
result = NoProxySelector.getInstance();
break;
case 1: // Fixed settings
Logger.log(getClass(), LogLevel.TRACE, "Firefox uses manual settings");
result = setupFixedProxySelector(settings);
break;
case 2: // PAC Script
String pacScriptUrl = settings.getProperty("network.proxy.autoconfig_url", "");
Logger.log(getClass(), LogLevel.TRACE, "Firefox uses script (PAC) {0}", pacScriptUrl);
result = ProxyUtil.buildPacSelectorForUrl(pacScriptUrl);
break;
case 3: // Backward compatibility to netscape.
Logger.log(getClass(), LogLevel.TRACE, "Netscape compability mode -> uses no proxy");
result = NoProxySelector.getInstance();
break;
case 4: // WPAD auto config
Logger.log(getClass(), LogLevel.TRACE, "Firefox uses automatic detection (WPAD)");
result = new WpadProxySearchStrategy().getProxySelector();
break;
default:
break;
}
// Wrap in white list filter.
String noProxyList = settings.getProperty("network.proxy.no_proxies_on", null);
if (result != null && noProxyList != null && noProxyList.trim().length() > 0) {
Logger.log(getClass(), LogLevel.TRACE, "Firefox uses proxy bypass list for: {0}", noProxyList);
result = new ProxyBypassListSelector(noProxyList, result);
}
return result;
}
/*************************************************************************
* Reads the settings file and stores all settings in a Properties map.
* @return the parsed settings.
* @throws ProxyException on read error.
************************************************************************/
public Properties readSettings() throws ProxyException {
try {
Properties settings = this.settingsParser.parseSettings(this.profileScanner);
return settings;
} catch (IOException e) {
Logger.log(getClass(), LogLevel.ERROR, "Error parsing settings", e);
throw new ProxyException(e);
}
}
/*************************************************************************
* Parse the fixed proxy settings and build an ProxySelector for this a
* chained configuration.
* @param settings the proxy settings to evaluate.
************************************************************************/
private ProxySelector setupFixedProxySelector(Properties settings) {
ProtocolDispatchSelector ps = new ProtocolDispatchSelector();
installHttpProxy(ps, settings);
if (isProxyShared(settings)) {
installSharedProxy(ps);
} else {
installFtpProxy(ps, settings);
installSecureProxy(ps, settings);
installSocksProxy(ps, settings);
}
return ps;
}
/*************************************************************************
* @param ps
* @param settings
* @throws NumberFormatException
************************************************************************/
private void installFtpProxy(ProtocolDispatchSelector ps,
Properties settings) throws NumberFormatException {
installSelectorForProtocol(ps, settings, "ftp");
}
/*************************************************************************
* @param ps
* @param settings
* @throws NumberFormatException
************************************************************************/
private void installHttpProxy(ProtocolDispatchSelector ps,
Properties settings) throws NumberFormatException {
installSelectorForProtocol(ps, settings, "http");
}
/*************************************************************************
* @param settings
* @return
************************************************************************/
private boolean isProxyShared(Properties settings) {
return Boolean.TRUE.toString().equals(settings.getProperty("network.proxy.share_proxy_settings", "false").toLowerCase());
}
/*************************************************************************
* @param ps
************************************************************************/
private void installSharedProxy(ProtocolDispatchSelector ps) {
ProxySelector httpProxy;
httpProxy = ps.getSelector("socks");
if (httpProxy != null) {
ps.setFallbackSelector(httpProxy);
return;
}
httpProxy = ps.getSelector("http");
if (httpProxy != null) {
ps.setFallbackSelector(httpProxy);
return;
}
}
/*************************************************************************
* @param ps
* @param settings
* @throws NumberFormatException
************************************************************************/
private void installSocksProxy(ProtocolDispatchSelector ps,
Properties settings) throws NumberFormatException {
installSelectorForProtocol(ps, settings, "socks");
}
/*************************************************************************
* @param ps
* @param settings
* @throws NumberFormatException
************************************************************************/
private void installSecureProxy(ProtocolDispatchSelector ps,
Properties settings) throws NumberFormatException {
String proxyHost = settings.getProperty("network.proxy.ssl", null);
int proxyPort = Integer.parseInt(settings.getProperty("network.proxy.ssl_port", "0"));
if (proxyHost != null) {
Logger.log(getClass(), LogLevel.TRACE, "Firefox secure proxy is {0}:{1}", proxyHost, proxyPort);
ProxySelector p = ProxyUtil.parseProxySettings(proxyHost, Proxy.Type.HTTP, proxyPort);
ps.setSelector("https", p);
ps.setSelector("sftp", p);
}
}
/*************************************************************************
* Installs a proxy selector for the given protocol when settings are
* available.
* @param ps a ProtocolDispatchSelector to configure.
* @param settings to read the config from.
* @param protocol to configure.
* @throws NumberFormatException
************************************************************************/
private void installSelectorForProtocol(ProtocolDispatchSelector ps,
Properties settings, String protocol) throws NumberFormatException {
String proxyHost = settings.getProperty("network.proxy."+protocol, null);
int proxyPort = Integer.parseInt(settings.getProperty("network.proxy."+protocol+"_port", "0"));
if (proxyHost != null) {
Proxy.Type type;
if (protocol.startsWith("socks")) {
type = Proxy.Type.SOCKS;
protocol = "socket";
} else {
type = Proxy.Type.HTTP;
}
Logger.log(getClass(), LogLevel.TRACE, "Firefox "+protocol+" proxy is {0}:{1}", proxyHost, proxyPort);
ps.setSelector(protocol, ProxyUtil.parseProxySettings(proxyHost, type, proxyPort));
}
}
}
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