| /* |
| * 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. |
| */ |
| package org.eclipse.aether.util.repository; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Locale; |
| import java.util.Map; |
| 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; |
| |
| import static java.util.Objects.requireNonNull; |
| |
| /** |
| * A simple proxy selector that selects the first matching proxy from a list of configured proxies. |
| */ |
| public final class DefaultProxySelector implements ProxySelector { |
| |
| private final List<ProxyDef> proxies = new ArrayList<>(); |
| |
| /** |
| * 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) { |
| requireNonNull(repository, "repository cannot be null"); |
| Map<String, ProxyDef> candidates = new HashMap<>(); |
| |
| 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<>(); |
| 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[0]); |
| } |
| |
| 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); |
| } |
| } |
| } |