| package org.eclipse.aether.util.repository; |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Locale; |
| import java.util.Map; |
| import static java.util.Objects.requireNonNull; |
| import java.util.StringTokenizer; |
| import java.util.regex.Pattern; |
| |
| import org.eclipse.aether.repository.Proxy; |
| import org.eclipse.aether.repository.ProxySelector; |
| import org.eclipse.aether.repository.RemoteRepository; |
| |
| /** |
| * A simple proxy selector that selects the first matching proxy from a list of configured proxies. |
| */ |
| public final class DefaultProxySelector |
| implements ProxySelector |
| { |
| |
| private List<ProxyDef> proxies = new ArrayList<ProxyDef>(); |
| |
| /** |
| * Adds the specified proxy definition to the selector. Proxy definitions are ordered, the first matching proxy for |
| * a given repository will be used. |
| * |
| * @param proxy The proxy definition to add, must not be {@code null}. |
| * @param nonProxyHosts The list of (case-insensitive) host names to exclude from proxying, may be {@code null}. |
| * @return This proxy selector for chaining, never {@code null}. |
| */ |
| public DefaultProxySelector add( Proxy proxy, String nonProxyHosts ) |
| { |
| requireNonNull( proxy, "proxy cannot be null" ); |
| proxies.add( new ProxyDef( proxy, nonProxyHosts ) ); |
| |
| return this; |
| } |
| |
| public Proxy getProxy( RemoteRepository repository ) |
| { |
| Map<String, ProxyDef> candidates = new HashMap<String, ProxyDef>(); |
| |
| String host = repository.getHost(); |
| for ( ProxyDef proxy : proxies ) |
| { |
| if ( !proxy.nonProxyHosts.isNonProxyHost( host ) ) |
| { |
| String key = proxy.proxy.getType().toLowerCase( Locale.ENGLISH ); |
| if ( !candidates.containsKey( key ) ) |
| { |
| candidates.put( key, proxy ); |
| } |
| } |
| } |
| |
| String protocol = repository.getProtocol().toLowerCase( Locale.ENGLISH ); |
| |
| if ( "davs".equals( protocol ) ) |
| { |
| protocol = "https"; |
| } |
| else if ( "dav".equals( protocol ) ) |
| { |
| protocol = "http"; |
| } |
| else if ( protocol.startsWith( "dav:" ) ) |
| { |
| protocol = protocol.substring( "dav:".length() ); |
| } |
| |
| ProxyDef proxy = candidates.get( protocol ); |
| if ( proxy == null && "https".equals( protocol ) ) |
| { |
| proxy = candidates.get( "http" ); |
| } |
| |
| return ( proxy != null ) ? proxy.proxy : null; |
| } |
| |
| static class NonProxyHosts |
| { |
| |
| private final Pattern[] patterns; |
| |
| NonProxyHosts( String nonProxyHosts ) |
| { |
| List<Pattern> patterns = new ArrayList<Pattern>(); |
| if ( nonProxyHosts != null ) |
| { |
| for ( StringTokenizer tokenizer = new StringTokenizer( nonProxyHosts, "|" ); tokenizer.hasMoreTokens(); ) |
| { |
| String pattern = tokenizer.nextToken(); |
| pattern = pattern.replace( ".", "\\." ).replace( "*", ".*" ); |
| patterns.add( Pattern.compile( pattern, Pattern.CASE_INSENSITIVE ) ); |
| } |
| } |
| this.patterns = patterns.toArray( new Pattern[patterns.size()] ); |
| } |
| |
| boolean isNonProxyHost( String host ) |
| { |
| if ( host != null ) |
| { |
| for ( Pattern pattern : patterns ) |
| { |
| if ( pattern.matcher( host ).matches() ) |
| { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| } |
| |
| static class ProxyDef |
| { |
| |
| final Proxy proxy; |
| |
| final NonProxyHosts nonProxyHosts; |
| |
| ProxyDef( Proxy proxy, String nonProxyHosts ) |
| { |
| this.proxy = proxy; |
| this.nonProxyHosts = new NonProxyHosts( nonProxyHosts ); |
| } |
| |
| } |
| |
| } |