platform/platform-api/src/com/intellij/util/proxy/CommonProxy.java - platform/tools/idea - Git at Google

 /*
  * Copyright 2000-2014 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  * http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 package com.intellij.util.proxy;

 import com.intellij.CommonBundle;
 import com.intellij.openapi.application.ApplicationNamesInfo;
 import com.intellij.openapi.diagnostic.Logger;
 import com.intellij.openapi.util.Comparing;
 import com.intellij.openapi.util.Pair;
 import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.openapi.vfs.VfsUtil;
 import com.intellij.util.containers.ContainerUtil;
 import com.intellij.util.net.NetUtils;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;

 import java.io.IOException;
 import java.net.*;
 import java.util.*;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicReference;

 public class CommonProxy extends ProxySelector {
   private final static CommonProxy ourInstance = new CommonProxy();
   private final CommonAuthenticator myAuthenticator;

   private final static ThreadLocal<Boolean> ourReenterDefence = new ThreadLocal<Boolean>();

   public final static List<Proxy> NO_PROXY_LIST = Collections.singletonList(Proxy.NO_PROXY);
   private final static long ourErrorInterval = TimeUnit.MINUTES.toMillis(3);
   private static volatile int ourNotificationCount;
   private volatile static long ourErrorTime = 0;
   private volatile static ProxySelector ourWrong;
   private static final AtomicReference<Map<String, String>> ourProps = new AtomicReference<Map<String, String>>();
   static {
     ProxySelector.setDefault(ourInstance);
   }

   private static final Logger LOG = Logger.getInstance("#com.intellij.util.proxy.CommonProxy");
   private final Object myLock;
   private final Set<Pair<HostInfo, Thread>> myNoProxy;

   private final Map<String, ProxySelector> myCustom;
   private final Map<String, NonStaticAuthenticator> myCustomAuth;
   private final Set<Pair<HostInfo, Thread>> myNoAuthentication;

   public static CommonProxy getInstance() {
     return ourInstance;
   }

   private CommonProxy() {
     myLock = new Object();
     myNoProxy = new HashSet<Pair<HostInfo, Thread>>();
     myCustom = new HashMap<String, ProxySelector>();
     myCustomAuth = new HashMap<String, NonStaticAuthenticator>();
     myAuthenticator = new CommonAuthenticator();
     ensureAuthenticator();
     myNoAuthentication = new HashSet<Pair<HostInfo, Thread>>();
   }

   public static void isInstalledAssertion() {
     final ProxySelector aDefault = ProxySelector.getDefault();
     if (ourInstance != aDefault) {
       // to report only once
       if (ourWrong != aDefault || itsTime()) {
         LOG.error("ProxySelector.setDefault() was changed to [" + aDefault.toString() + "] - other than com.intellij.util.proxy.CommonProxy.ourInstance.\n" +
                   "This will make some " + ApplicationNamesInfo.getInstance().getProductName() + " network calls fail.\n" +
                   "Instead, methods of com.intellij.util.proxy.CommonProxy should be used for proxying.");
         ourWrong = aDefault;
       }
       ProxySelector.setDefault(ourInstance);
       ourInstance.ensureAuthenticator();
     }
     assertSystemPropertiesSet();
   }

   private static boolean itsTime() {
     final boolean b = System.currentTimeMillis() - ourErrorTime > ourErrorInterval && ourNotificationCount < 5;
     if (b) {
       ourErrorTime = System.currentTimeMillis();
       ++ ourNotificationCount;
     }
     return b;
   }

   private static void assertSystemPropertiesSet() {
     final Map<String, String> props = getOldStyleProperties();

     final Map<String, String> was = ourProps.get();
     if (Comparing.equal(was, props) && ! itsTime()) return;
     ourProps.set(props);

     final String message = getMessageFromProps(props);
     if (message != null) {
       // we only intend to somehow report possible misconfiguration
       // will not show to the user since on Mac OS this setting is typical
       LOG.info(message);
     }
   }

   @Nullable
   public static String getMessageFromProps(Map<String, String> props) {
     String message = null;
     for (Map.Entry<String, String> entry : props.entrySet()) {
       if (! StringUtil.isEmptyOrSpaces(entry.getValue())) {
         message = CommonBundle.message("label.old.way.jvm.property.used", entry.getKey(), entry.getValue());
         break;
       }
     }
     return message;
   }

   public static Map<String, String> getOldStyleProperties() {
     final Map<String, String> props = new HashMap<String, String>();
     props.put(JavaProxyProperty.HTTP_HOST, System.getProperty(JavaProxyProperty.HTTP_HOST));
     props.put(JavaProxyProperty.HTTPS_HOST, System.getProperty(JavaProxyProperty.HTTPS_HOST));
     props.put(JavaProxyProperty.SOCKS_HOST, System.getProperty(JavaProxyProperty.SOCKS_HOST));
     return props;
   }

   public void ensureAuthenticator() {
     Authenticator.setDefault(myAuthenticator);
   }

   public void noProxy(@NotNull final String protocol, @NotNull final String host, final int port) {
     synchronized (myLock) {
       LOG.debug("no proxy added: " + protocol + "://" + host + ":" + port);
       myNoProxy.add(Pair.create(new HostInfo(protocol, host, port), Thread.currentThread()));
     }
   }

   public void removeNoProxy(@NotNull final String protocol, @NotNull final String host, final int port) {
     synchronized (myLock) {
       LOG.debug("no proxy removed: " + protocol + "://" + host + ":" + port);
       myNoProxy.remove(Pair.create(new HostInfo(protocol, host, port), Thread.currentThread()));
     }
   }

   public void noAuthentication(@NotNull final String protocol, @NotNull final String host, final int port) {
     synchronized (myLock) {
       LOG.debug("no proxy added: " + protocol + "://" + host + ":" + port);
       myNoProxy.add(Pair.create(new HostInfo(protocol, host, port), Thread.currentThread()));
     }
   }

   public void removeNoAuthentication(@NotNull final String protocol, @NotNull final String host, final int port) {
     synchronized (myLock) {
       LOG.debug("no proxy removed: " + protocol + "://" + host + ":" + port);
       myNoProxy.remove(Pair.create(new HostInfo(protocol, host, port), Thread.currentThread()));
     }
   }

   public void setCustom(@NotNull final String key, @NotNull final ProxySelector proxySelector) {
     synchronized (myLock) {
       LOG.debug("custom set: " + key + ", " + proxySelector.toString());
       myCustom.put(key, proxySelector);
     }
   }

   public void setCustomAuth(@NotNull final String key, final NonStaticAuthenticator authenticator) {
     synchronized (myLock) {
       LOG.debug("custom auth set: " + key + ", " + authenticator.toString());
       myCustomAuth.put(key, authenticator);
     }
   }

   public void removeCustomAuth(@NotNull final String key) {
     synchronized (myLock) {
       LOG.debug("custom auth removed: " + key);
       myCustomAuth.remove(key);
     }
   }

   public void removeCustom(@NotNull final String key) {
     synchronized (myLock) {
       LOG.debug("custom set: " + key);
       myCustom.remove(key);
     }
   }

   public List<Proxy> select(@NotNull URL url) {
     return select(createUri(url));
   }

   @Override
   public List<Proxy> select(@Nullable URI uri) {
     isInstalledAssertion();
     if (uri == null) {
       return NO_PROXY_LIST;
     }
     LOG.debug("CommonProxy.select called for " + uri.toString());

     if (Boolean.TRUE.equals(ourReenterDefence.get())) {
       return NO_PROXY_LIST;
     }
     try {
       ourReenterDefence.set(Boolean.TRUE);
       String host = StringUtil.notNullize(uri.getHost());
       if (NetUtils.isLocalhost(host)) {
         return NO_PROXY_LIST;
       }

       final HostInfo info = new HostInfo(uri.getScheme(), host, correctPortByProtocol(uri));
       final Map<String, ProxySelector> copy;
       synchronized (myLock) {
         if (myNoProxy.contains(Pair.create(info, Thread.currentThread()))) {
           LOG.debug("CommonProxy.select returns no proxy (in no proxy list) for " + uri.toString());
           return NO_PROXY_LIST;
         }
         copy = new HashMap<String, ProxySelector>(myCustom);
       }
       for (Map.Entry<String, ProxySelector> entry : copy.entrySet()) {
         final List<Proxy> proxies = entry.getValue().select(uri);
         if (!ContainerUtil.isEmpty(proxies)) {
           LOG.debug("CommonProxy.select returns custom proxy for " + uri.toString() + ", " + proxies.toString());
           return proxies;
         }
       }
       return NO_PROXY_LIST;
     }
     finally {
       ourReenterDefence.remove();
     }
   }

   private static int correctPortByProtocol(@NotNull URI uri) {
     if (uri.getPort() == -1) {
       if ("http".equals(uri.getScheme())) {
         return ProtocolDefaultPorts.HTTP;
       } else if ("https".equals(uri.getScheme())) {
         return ProtocolDefaultPorts.SSL;
       }
     }
     return uri.getPort();
   }

   @Override
   public void connectFailed(URI uri, SocketAddress sa, IOException ioe) {
     LOG.info("connect failed to " + uri.toString() + ", sa: " + sa.toString(), ioe);

     final Map<String, ProxySelector> copy;
     synchronized (myLock) {
       copy = new HashMap<String, ProxySelector>(myCustom);
     }
     for (Map.Entry<String, ProxySelector> entry : copy.entrySet()) {
       entry.getValue().connectFailed(uri, sa, ioe);
     }
   }

   private class CommonAuthenticator extends Authenticator {
     @Override
     protected PasswordAuthentication getPasswordAuthentication() {
       final String siteStr = getRequestingSite() == null ? null : getRequestingSite().toString();
       LOG.debug("CommonAuthenticator.getPasswordAuthentication called for " + siteStr);
       final String host = getHostNameReliably(getRequestingHost(), getRequestingSite(), getRequestingURL());
       final int port = getRequestingPort();

       final Map<String, NonStaticAuthenticator> copy;
       synchronized (myLock) {
         // for hosts defined as no proxy we will NOT pass authentication to not provoke credentials
         final HostInfo hostInfo = new HostInfo(getRequestingProtocol(), host, port);
         final Pair<HostInfo, Thread> pair = Pair.create(hostInfo, Thread.currentThread());
         if (myNoProxy.contains(pair)) {
           LOG.debug("CommonAuthenticator.getPasswordAuthentication found host in no proxies set (" + siteStr + ")");
           return null;
         }
         if (myNoAuthentication.contains(pair)) {
           LOG.debug("CommonAuthenticator.getPasswordAuthentication found host in no authentication set (" + siteStr + ")");
           return null;
         }
         copy = new HashMap<String, NonStaticAuthenticator>(myCustomAuth);
       }

       if (! copy.isEmpty()) {
         for (Map.Entry<String, NonStaticAuthenticator> entry : copy.entrySet()) {
           final NonStaticAuthenticator authenticator = entry.getValue();
           prepareAuthenticator(authenticator);
           final PasswordAuthentication authentication = authenticator.getPasswordAuthentication();
           if (authentication != null) {
             LOG.debug("CommonAuthenticator.getPasswordAuthentication found custom authenticator for " + siteStr + ", " + entry.getKey() +
               ", " + authenticator.toString());
             logAuthentication(authentication);
             return authentication;
           }
         }
       }
       return null;
     }

     private void prepareAuthenticator(NonStaticAuthenticator authenticator) {
       authenticator.setRequestingHost(getRequestingHost());
       authenticator.setRequestingSite(getRequestingSite());
       authenticator.setRequestingPort(getRequestingPort());
       authenticator.setRequestingProtocol(getRequestingProtocol());//http
       authenticator.setRequestingPrompt(getRequestingPrompt());
       authenticator.setRequestingScheme(getRequestingScheme());//ntlm
       authenticator.setRequestingURL(getRequestingURL());
       authenticator.setRequestorType(getRequestorType());
     }

     private void logAuthentication(PasswordAuthentication authentication) {
       if (authentication == null) {
         LOG.debug("CommonAuthenticator.getPasswordAuthentication returned null");
       } else {
         LOG.debug("CommonAuthenticator.getPasswordAuthentication returned authentication pair with login: " + authentication.getUserName());
       }
     }
   }

   public static String getHostNameReliably(final String requestingHost, final InetAddress site, final URL requestingUrl) {
     String host = requestingHost;
     if (host == null) {
       if (site != null) {
         host = site.getHostName();
       }
       else if (requestingUrl != null) {
         host = requestingUrl.getHost();
       }
     }
     host = host == null ? "" : host;
     return host;
   }

   private static URI createUri(final URL url) {
     return VfsUtil.toUri(url.toString());
   }

   public static class HostInfo {
     public String myProtocol;
     @NotNull
     public String myHost;
     public int myPort;

     public HostInfo() {
     }

     public HostInfo(@Nullable String protocol, @NotNull String host, int port) {
       myPort = port;
       myHost = host;
       myProtocol = protocol;
     }

     public String getProtocol() {
       return myProtocol;
     }

     public String getHost() {
       return myHost;
     }

     public int getPort() {
       return myPort;
     }

     @Override
     public boolean equals(Object o) {
       if (this == o) {
         return true;
       }
       if (o == null || getClass() != o.getClass()) {
         return false;
       }

       HostInfo info = (HostInfo)o;
       return myPort == info.myPort && myHost.equals(info.myHost) && Comparing.equal(myProtocol, info.myProtocol);
     }

     @Override
     public int hashCode() {
       int result = myProtocol != null ? myProtocol.hashCode() : 0;
       result = 31 * result + myHost.hashCode();
       result = 31 * result + myPort;
       return result;
     }
   }
 }
	/*
	* Copyright 2000-2014 JetBrains s.r.o.
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/
	package com.intellij.util.proxy;

	import com.intellij.CommonBundle;
	import com.intellij.openapi.application.ApplicationNamesInfo;
	import com.intellij.openapi.diagnostic.Logger;
	import com.intellij.openapi.util.Comparing;
	import com.intellij.openapi.util.Pair;
	import com.intellij.openapi.util.text.StringUtil;
	import com.intellij.openapi.vfs.VfsUtil;
	import com.intellij.util.containers.ContainerUtil;
	import com.intellij.util.net.NetUtils;
	import org.jetbrains.annotations.NotNull;
	import org.jetbrains.annotations.Nullable;

	import java.io.IOException;
	import java.net.*;
	import java.util.*;
	import java.util.concurrent.TimeUnit;
	import java.util.concurrent.atomic.AtomicReference;

	public class CommonProxy extends ProxySelector {
	private final static CommonProxy ourInstance = new CommonProxy();
	private final CommonAuthenticator myAuthenticator;

	private final static ThreadLocal<Boolean> ourReenterDefence = new ThreadLocal<Boolean>();

	public final static List<Proxy> NO_PROXY_LIST = Collections.singletonList(Proxy.NO_PROXY);
	private final static long ourErrorInterval = TimeUnit.MINUTES.toMillis(3);
	private static volatile int ourNotificationCount;
	private volatile static long ourErrorTime = 0;
	private volatile static ProxySelector ourWrong;
	private static final AtomicReference<Map<String, String>> ourProps = new AtomicReference<Map<String, String>>();
	static {
	ProxySelector.setDefault(ourInstance);
	}

	private static final Logger LOG = Logger.getInstance("#com.intellij.util.proxy.CommonProxy");
	private final Object myLock;
	private final Set<Pair<HostInfo, Thread>> myNoProxy;

	private final Map<String, ProxySelector> myCustom;
	private final Map<String, NonStaticAuthenticator> myCustomAuth;
	private final Set<Pair<HostInfo, Thread>> myNoAuthentication;

	public static CommonProxy getInstance() {
	return ourInstance;
	}

	private CommonProxy() {
	myLock = new Object();
	myNoProxy = new HashSet<Pair<HostInfo, Thread>>();
	myCustom = new HashMap<String, ProxySelector>();
	myCustomAuth = new HashMap<String, NonStaticAuthenticator>();
	myAuthenticator = new CommonAuthenticator();
	ensureAuthenticator();
	myNoAuthentication = new HashSet<Pair<HostInfo, Thread>>();
	}

	public static void isInstalledAssertion() {
	final ProxySelector aDefault = ProxySelector.getDefault();
	if (ourInstance != aDefault) {
	// to report only once
	if (ourWrong != aDefault \|\| itsTime()) {
	LOG.error("ProxySelector.setDefault() was changed to [" + aDefault.toString() + "] - other than com.intellij.util.proxy.CommonProxy.ourInstance.\n" +
	"This will make some " + ApplicationNamesInfo.getInstance().getProductName() + " network calls fail.\n" +
	"Instead, methods of com.intellij.util.proxy.CommonProxy should be used for proxying.");
	ourWrong = aDefault;
	}
	ProxySelector.setDefault(ourInstance);
	ourInstance.ensureAuthenticator();
	}
	assertSystemPropertiesSet();
	}

	private static boolean itsTime() {
	final boolean b = System.currentTimeMillis() - ourErrorTime > ourErrorInterval && ourNotificationCount < 5;
	if (b) {
	ourErrorTime = System.currentTimeMillis();
	++ ourNotificationCount;
	}
	return b;
	}

	private static void assertSystemPropertiesSet() {
	final Map<String, String> props = getOldStyleProperties();

	final Map<String, String> was = ourProps.get();
	if (Comparing.equal(was, props) && ! itsTime()) return;
	ourProps.set(props);

	final String message = getMessageFromProps(props);
	if (message != null) {
	// we only intend to somehow report possible misconfiguration
	// will not show to the user since on Mac OS this setting is typical
	LOG.info(message);
	}
	}

	@Nullable
	public static String getMessageFromProps(Map<String, String> props) {
	String message = null;
	for (Map.Entry<String, String> entry : props.entrySet()) {
	if (! StringUtil.isEmptyOrSpaces(entry.getValue())) {
	message = CommonBundle.message("label.old.way.jvm.property.used", entry.getKey(), entry.getValue());
	break;
	}
	}
	return message;
	}

	public static Map<String, String> getOldStyleProperties() {
	final Map<String, String> props = new HashMap<String, String>();
	props.put(JavaProxyProperty.HTTP_HOST, System.getProperty(JavaProxyProperty.HTTP_HOST));
	props.put(JavaProxyProperty.HTTPS_HOST, System.getProperty(JavaProxyProperty.HTTPS_HOST));
	props.put(JavaProxyProperty.SOCKS_HOST, System.getProperty(JavaProxyProperty.SOCKS_HOST));
	return props;
	}

	public void ensureAuthenticator() {
	Authenticator.setDefault(myAuthenticator);
	}

	public void noProxy(@NotNull final String protocol, @NotNull final String host, final int port) {
	synchronized (myLock) {
	LOG.debug("no proxy added: " + protocol + "://" + host + ":" + port);
	myNoProxy.add(Pair.create(new HostInfo(protocol, host, port), Thread.currentThread()));
	}
	}

	public void removeNoProxy(@NotNull final String protocol, @NotNull final String host, final int port) {
	synchronized (myLock) {
	LOG.debug("no proxy removed: " + protocol + "://" + host + ":" + port);
	myNoProxy.remove(Pair.create(new HostInfo(protocol, host, port), Thread.currentThread()));
	}
	}

	public void noAuthentication(@NotNull final String protocol, @NotNull final String host, final int port) {
	synchronized (myLock) {
	LOG.debug("no proxy added: " + protocol + "://" + host + ":" + port);
	myNoProxy.add(Pair.create(new HostInfo(protocol, host, port), Thread.currentThread()));
	}
	}

	public void removeNoAuthentication(@NotNull final String protocol, @NotNull final String host, final int port) {
	synchronized (myLock) {
	LOG.debug("no proxy removed: " + protocol + "://" + host + ":" + port);
	myNoProxy.remove(Pair.create(new HostInfo(protocol, host, port), Thread.currentThread()));
	}
	}

	public void setCustom(@NotNull final String key, @NotNull final ProxySelector proxySelector) {
	synchronized (myLock) {
	LOG.debug("custom set: " + key + ", " + proxySelector.toString());
	myCustom.put(key, proxySelector);
	}
	}

	public void setCustomAuth(@NotNull final String key, final NonStaticAuthenticator authenticator) {
	synchronized (myLock) {
	LOG.debug("custom auth set: " + key + ", " + authenticator.toString());
	myCustomAuth.put(key, authenticator);
	}
	}

	public void removeCustomAuth(@NotNull final String key) {
	synchronized (myLock) {
	LOG.debug("custom auth removed: " + key);
	myCustomAuth.remove(key);
	}
	}

	public void removeCustom(@NotNull final String key) {
	synchronized (myLock) {
	LOG.debug("custom set: " + key);
	myCustom.remove(key);
	}
	}

	public List<Proxy> select(@NotNull URL url) {
	return select(createUri(url));
	}

	@Override
	public List<Proxy> select(@Nullable URI uri) {
	isInstalledAssertion();
	if (uri == null) {
	return NO_PROXY_LIST;
	}
	LOG.debug("CommonProxy.select called for " + uri.toString());

	if (Boolean.TRUE.equals(ourReenterDefence.get())) {
	return NO_PROXY_LIST;
	}
	try {
	ourReenterDefence.set(Boolean.TRUE);
	String host = StringUtil.notNullize(uri.getHost());
	if (NetUtils.isLocalhost(host)) {
	return NO_PROXY_LIST;
	}

	final HostInfo info = new HostInfo(uri.getScheme(), host, correctPortByProtocol(uri));
	final Map<String, ProxySelector> copy;
	synchronized (myLock) {
	if (myNoProxy.contains(Pair.create(info, Thread.currentThread()))) {
	LOG.debug("CommonProxy.select returns no proxy (in no proxy list) for " + uri.toString());
	return NO_PROXY_LIST;
	}
	copy = new HashMap<String, ProxySelector>(myCustom);
	}
	for (Map.Entry<String, ProxySelector> entry : copy.entrySet()) {
	final List<Proxy> proxies = entry.getValue().select(uri);
	if (!ContainerUtil.isEmpty(proxies)) {
	LOG.debug("CommonProxy.select returns custom proxy for " + uri.toString() + ", " + proxies.toString());
	return proxies;
	}
	}
	return NO_PROXY_LIST;
	}
	finally {
	ourReenterDefence.remove();
	}
	}

	private static int correctPortByProtocol(@NotNull URI uri) {
	if (uri.getPort() == -1) {
	if ("http".equals(uri.getScheme())) {
	return ProtocolDefaultPorts.HTTP;
	} else if ("https".equals(uri.getScheme())) {
	return ProtocolDefaultPorts.SSL;
	}
	}
	return uri.getPort();
	}

	@Override
	public void connectFailed(URI uri, SocketAddress sa, IOException ioe) {
	LOG.info("connect failed to " + uri.toString() + ", sa: " + sa.toString(), ioe);

	final Map<String, ProxySelector> copy;
	synchronized (myLock) {
	copy = new HashMap<String, ProxySelector>(myCustom);
	}
	for (Map.Entry<String, ProxySelector> entry : copy.entrySet()) {
	entry.getValue().connectFailed(uri, sa, ioe);
	}
	}

	private class CommonAuthenticator extends Authenticator {
	@Override
	protected PasswordAuthentication getPasswordAuthentication() {
	final String siteStr = getRequestingSite() == null ? null : getRequestingSite().toString();
	LOG.debug("CommonAuthenticator.getPasswordAuthentication called for " + siteStr);
	final String host = getHostNameReliably(getRequestingHost(), getRequestingSite(), getRequestingURL());
	final int port = getRequestingPort();

	final Map<String, NonStaticAuthenticator> copy;
	synchronized (myLock) {
	// for hosts defined as no proxy we will NOT pass authentication to not provoke credentials
	final HostInfo hostInfo = new HostInfo(getRequestingProtocol(), host, port);
	final Pair<HostInfo, Thread> pair = Pair.create(hostInfo, Thread.currentThread());
	if (myNoProxy.contains(pair)) {
	LOG.debug("CommonAuthenticator.getPasswordAuthentication found host in no proxies set (" + siteStr + ")");
	return null;
	}
	if (myNoAuthentication.contains(pair)) {
	LOG.debug("CommonAuthenticator.getPasswordAuthentication found host in no authentication set (" + siteStr + ")");
	return null;
	}
	copy = new HashMap<String, NonStaticAuthenticator>(myCustomAuth);
	}

	if (! copy.isEmpty()) {
	for (Map.Entry<String, NonStaticAuthenticator> entry : copy.entrySet()) {
	final NonStaticAuthenticator authenticator = entry.getValue();
	prepareAuthenticator(authenticator);
	final PasswordAuthentication authentication = authenticator.getPasswordAuthentication();
	if (authentication != null) {
	LOG.debug("CommonAuthenticator.getPasswordAuthentication found custom authenticator for " + siteStr + ", " + entry.getKey() +
	", " + authenticator.toString());
	logAuthentication(authentication);
	return authentication;
	}
	}
	}
	return null;
	}

	private void prepareAuthenticator(NonStaticAuthenticator authenticator) {
	authenticator.setRequestingHost(getRequestingHost());
	authenticator.setRequestingSite(getRequestingSite());
	authenticator.setRequestingPort(getRequestingPort());
	authenticator.setRequestingProtocol(getRequestingProtocol());//http
	authenticator.setRequestingPrompt(getRequestingPrompt());
	authenticator.setRequestingScheme(getRequestingScheme());//ntlm
	authenticator.setRequestingURL(getRequestingURL());
	authenticator.setRequestorType(getRequestorType());
	}

	private void logAuthentication(PasswordAuthentication authentication) {
	if (authentication == null) {
	LOG.debug("CommonAuthenticator.getPasswordAuthentication returned null");
	} else {
	LOG.debug("CommonAuthenticator.getPasswordAuthentication returned authentication pair with login: " + authentication.getUserName());
	}
	}
	}

	public static String getHostNameReliably(final String requestingHost, final InetAddress site, final URL requestingUrl) {
	String host = requestingHost;
	if (host == null) {
	if (site != null) {
	host = site.getHostName();
	}
	else if (requestingUrl != null) {
	host = requestingUrl.getHost();
	}
	}
	host = host == null ? "" : host;
	return host;
	}

	private static URI createUri(final URL url) {
	return VfsUtil.toUri(url.toString());
	}

	public static class HostInfo {
	public String myProtocol;
	@NotNull
	public String myHost;
	public int myPort;

	public HostInfo() {
	}

	public HostInfo(@Nullable String protocol, @NotNull String host, int port) {
	myPort = port;
	myHost = host;
	myProtocol = protocol;
	}

	public String getProtocol() {
	return myProtocol;
	}

	public String getHost() {
	return myHost;
	}

	public int getPort() {
	return myPort;
	}

	@Override
	public boolean equals(Object o) {
	if (this == o) {
	return true;
	}
	if (o == null \|\| getClass() != o.getClass()) {
	return false;
	}

	HostInfo info = (HostInfo)o;
	return myPort == info.myPort && myHost.equals(info.myHost) && Comparing.equal(myProtocol, info.myProtocol);
	}

	@Override
	public int hashCode() {
	int result = myProtocol != null ? myProtocol.hashCode() : 0;
	result = 31 * result + myHost.hashCode();
	result = 31 * result + myPort;
	return result;
	}
	}
	}