com.github.markusbernhardt.proxy.search.desktop.gnome.GnomeDConfProxySearchStrategy Maven / Gradle / Ivy
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Proxy Vole is a Java library to auto detect the platform network proxy settings.
package com.github.markusbernhardt.proxy.search.desktop.gnome;
import java.io.IOException;
import java.net.ProxySelector;
import java.util.Properties;
import com.github.markusbernhardt.proxy.ProxySearchStrategy;
import com.github.markusbernhardt.proxy.selector.direct.NoProxySelector;
import com.github.markusbernhardt.proxy.selector.fixed.FixedProxySelector;
import com.github.markusbernhardt.proxy.selector.misc.ProtocolDispatchSelector;
import com.github.markusbernhardt.proxy.selector.whitelist.ProxyBypassListSelector;
import com.github.markusbernhardt.proxy.util.Logger;
import com.github.markusbernhardt.proxy.util.ProxyException;
import com.github.markusbernhardt.proxy.util.ProxyUtil;
import com.github.markusbernhardt.proxy.util.Logger.LogLevel;
import java.io.BufferedReader;
import java.io.InputStreamReader;
/*****************************************************************************
* Loads the Gnome proxy settings from the Gnome GConf settings.
*
* The following settings are extracted from the configuration that is stored in
* .gconf folder found in the user's home directory:
*
*
* - org.gnome.system.proxy.http enabled -> bool used only by
* gnome-vfs
* - org.gnome.system.proxy.http host -> string
* "my-proxy.example.com" without "http://"
* - org.gnome.system.proxy.http port -> int
* - org.gnome.system.proxy.http use-authentication -> bool
* - org.gnome.system.proxy.http authentication-user -> string
* - org.gnome.system.proxy.http authentication-password -> string
*
* - org.gnome.system.proxy ignore-hosts -> list-of-string
* - org.gnome.system.proxy mode -> string THIS IS THE CANONICAL
* KEY; SEE BELOW
* - org.gnome.system.proxy use-same-proxy -> bool
* - org.gnome.system.proxy.https host -> string
* "proxy-for-https.example.com"
* - org.gnome.system.proxy.https port -> int
* - org.gnome.system.proxy.ftp host -> string
* "proxy-for-ftp.example.com"
* - org.gnome.system.proxy.ftp port -> int
* - org.gnome.system.proxy.socks host -> string
* "proxy-for-socks.example.com"
* - org.gnome.system.proxy.socks port -> int
* - org.gnome.system.proxy autoconfig-url -> string
* "http://proxy-autoconfig.example.com"
*
* org.gnome.system.proxy mode can be either:
* "none" -> No proxy is used
* "manual" -> The user's configuration values are used
* (org.gnome.system.http_proxy/{host,port,etc.})
* "auto" -> The "org.gnome.system.proxy/autoconfig_url" key is used
*
* GNOME Proxy_configuration settings are explained
* here in detail
*
*
* @author Markus Bernhardt, Copyright 2016
* @author Bernd Rosstauscher, Copyright 2009
****************************************************************************/
// TODO Work in progress: Needs unit tests and testing and code review
public class GnomeDConfProxySearchStrategy implements ProxySearchStrategy {
/*************************************************************************
* ProxySelector
*
* @see java.net.ProxySelector#ProxySelector()
************************************************************************/
public GnomeDConfProxySearchStrategy() {
super();
}
/*************************************************************************
* Loads the proxy settings and initializes a proxy selector for the Gnome
* proxy settings.
*
* @return a configured ProxySelector, null if none is found.
* @throws ProxyException
* on file reading error.
************************************************************************/
@Override
public ProxySelector getProxySelector() throws ProxyException {
Logger.log(getClass(), LogLevel.TRACE, "Detecting Gnome proxy settings");
Properties settings = readSettings();
String type = settings.getProperty("org.gnome.system.proxy mode");
Logger.log(getClass(), LogLevel.TRACE, "Mode is :{0}", type);
ProxySelector result = null;
if (type == null) {
String useProxy = settings.getProperty("org.gnome.system.proxy.http enabled");
if (useProxy == null) {
return null;
}
type = Boolean.parseBoolean(useProxy) ? "manual" : "none";
}
if ("none".equals(type)) {
Logger.log(getClass(), LogLevel.TRACE, "Gnome uses no proxy");
result = NoProxySelector.getInstance();
}
if ("manual".equals(type)) {
Logger.log(getClass(), LogLevel.TRACE, "Gnome uses manual proxy settings");
result = setupFixedProxySelector(settings);
}
if ("auto".equals(type)) {
String pacScriptUrl = settings.getProperty("org.gnome.system.proxy autoconfig-url", "");
Logger.log(getClass(), LogLevel.TRACE, "Gnome uses autodetect script {0}", pacScriptUrl);
result = ProxyUtil.buildPacSelectorForUrl(pacScriptUrl);
}
// Wrap into white-list filter?
String noProxyList = settings.getProperty("org.gnome.system.proxy ignore-hosts", null);
if (result != null && noProxyList != null && noProxyList.trim().length() > 0) {
Logger.log(getClass(), LogLevel.TRACE, "Gnome uses proxy bypass list: {0}", noProxyList);
result = new ProxyBypassListSelector(noProxyList, result);
}
return result;
}
/*************************************************************************
* Gets the printable name of the search strategy.
*
* @return the printable name of the search strategy
************************************************************************/
@Override
public String getName() {
return "gnome";
}
/*************************************************************************
* Load the proxy settings from the gconf settings XML file.
*
* @return the loaded settings stored in a properties object.
* @throws ProxyException
* on processing error.
************************************************************************/
public Properties readSettings() throws ProxyException {
Properties settings = new Properties();
try {
parseSettings(settings);
} catch (IOException e) {
Logger.log(getClass(), LogLevel.ERROR, "Gnome settings read error.", e);
throw new ProxyException(e);
}
return settings;
}
/*************************************************************************
* 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) {
if (!hasProxySettings(settings)) {
return null;
}
ProtocolDispatchSelector ps = new ProtocolDispatchSelector();
installHttpSelector(settings, ps);
if (useForAllProtocols(settings)) {
ps.setFallbackSelector(ps.getSelector("http"));
} else {
installSecureSelector(settings, ps);
installFtpSelector(settings, ps);
installSocksSelector(settings, ps);
}
return ps;
}
/*************************************************************************
* Check if the http proxy should also be used for all other protocols.
*
* @param settings
* to inspect.
* @return true if only one proxy is configured else false.
************************************************************************/
private boolean useForAllProtocols(Properties settings) {
return Boolean.parseBoolean(settings.getProperty("org.gnome.system.proxy use-same-proxy", "false"));
}
/*************************************************************************
* Checks if we have Proxy configuration settings in the properties.
*
* @param settings
* to inspect.
* @return true if we have found Proxy settings.
************************************************************************/
private boolean hasProxySettings(Properties settings) {
String proxyHost = settings.getProperty("org.gnome.system.proxy.http host", null);
return proxyHost != null && proxyHost.length() > 0;
}
/*************************************************************************
* Install a http proxy from the given settings.
*
* @param settings
* to inspect
* @param ps
* the dispatch selector to configure.
* @throws NumberFormatException
************************************************************************/
private void installHttpSelector(Properties settings, ProtocolDispatchSelector ps) throws NumberFormatException {
String proxyHost = settings.getProperty("org.gnome.system.proxy.http host", null);
int proxyPort = Integer.parseInt(settings.getProperty("org.gnome.system.proxy.http port", "0").trim());
if (proxyHost != null && proxyHost.length() > 0 && proxyPort > 0) {
Logger.log(getClass(), LogLevel.TRACE, "Gnome http proxy is {0}:{1}", proxyHost, proxyPort);
ps.setSelector("http", new FixedProxySelector(proxyHost.trim(), proxyPort));
}
}
/*************************************************************************
* Install a socks proxy from the given settings.
*
* @param settings
* to inspect
* @param ps
* the dispatch selector to configure.
* @throws NumberFormatException
************************************************************************/
private void installSocksSelector(Properties settings, ProtocolDispatchSelector ps) throws NumberFormatException {
String proxyHost = settings.getProperty("org.gnome.system.proxy.socks host", null);
int proxyPort = Integer.parseInt(settings.getProperty("org.gnome.system.proxy.socks port", "0").trim());
if (proxyHost != null && proxyHost.length() > 0 && proxyPort > 0) {
Logger.log(getClass(), LogLevel.TRACE, "Gnome socks proxy is {0}:{1}", proxyHost, proxyPort);
ps.setSelector("socks", new FixedProxySelector(proxyHost.trim(), proxyPort));
}
}
/*************************************************************************
* @param settings
* @param ps
* @throws NumberFormatException
************************************************************************/
private void installFtpSelector(Properties settings, ProtocolDispatchSelector ps) throws NumberFormatException {
String proxyHost = settings.getProperty("org.gnome.system.proxy.ftp host", null);
int proxyPort = Integer.parseInt(settings.getProperty("org.gnome.system.proxy.ftp port", "0").trim());
if (proxyHost != null && proxyHost.length() > 0 && proxyPort > 0) {
Logger.log(getClass(), LogLevel.TRACE, "Gnome ftp proxy is {0}:{1}", proxyHost, proxyPort);
ps.setSelector("ftp", new FixedProxySelector(proxyHost.trim(), proxyPort));
}
}
/*************************************************************************
* @param settings
* @param ps
* @throws NumberFormatException
************************************************************************/
private void installSecureSelector(Properties settings, ProtocolDispatchSelector ps) throws NumberFormatException {
String proxyHost = settings.getProperty("org.gnome.system.proxy.https host", null);
int proxyPort = Integer.parseInt(settings.getProperty("org.gnome.system.proxy.https port", "0").trim());
if (proxyHost != null && proxyHost.length() > 0 && proxyPort > 0) {
Logger.log(getClass(), LogLevel.TRACE, "Gnome secure proxy is {0}:{1}", proxyHost, proxyPort);
ps.setSelector("https", new FixedProxySelector(proxyHost.trim(), proxyPort));
ps.setSelector("sftp", new FixedProxySelector(proxyHost.trim(), proxyPort));
}
}
/*************************************************************************
* Parse the settings file and extract all network.proxy.* settings from it.
*
* @param context
* the gconf context to parse.
* @param settings
* the settings object to fill.
* @return the parsed properties.
* @throws IOException
* on read error.
************************************************************************/
private Properties parseSettings(Properties settings) throws IOException {
String line;
Logger.log(getClass(), LogLevel.TRACE, "exec gsettings list-recursively org.gnome.system.proxy");
Process p = Runtime.getRuntime().exec("gsettings list-recursively org.gnome.system.proxy");
BufferedReader bri = new BufferedReader(new InputStreamReader(p.getInputStream()));
while ((line = bri.readLine()) != null) {
Logger.log(getClass(), LogLevel.TRACE, line);
int schemaSep = line.indexOf(" ");
int keySep = line.indexOf(" ", schemaSep + 1);
String entry = line.substring(0, keySep);
String value = line.substring(keySep + 1).replaceAll("'", "");
// TODO 30.03.2015 bros Test for IP6 compatibility
if (value.matches("\\[.*\\]")) {
value = value.replaceAll("\\[|\\]| ", "");
}
Logger.log(getClass(), LogLevel.TRACE, "prop is: {0}|{1}", entry, value);
settings.setProperty(entry, value);
}
try {
p.waitFor();
} catch (InterruptedException ex) {
Logger.log(getClass(), LogLevel.ERROR, ex.getMessage());
}
return settings;
}
}