| // Copyright (C) 2021 The Android Open Source Project |
| // |
| // 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.googlesource.gerrit.plugins.serviceuser; |
| |
| import com.google.gerrit.extensions.annotations.PluginName; |
| import com.google.gerrit.server.config.PluginConfig; |
| import com.google.gerrit.server.config.PluginConfigFactory; |
| import com.google.inject.Inject; |
| import com.google.inject.Singleton; |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| import java.util.regex.Pattern; |
| |
| @Singleton |
| public class BlockedNameFilter { |
| private final PluginConfig cfg; |
| private final Set<String> blockedExactNames = new HashSet<>(); |
| private final List<String> blockedNamePrefixes = new ArrayList<>(); |
| private final List<Pattern> blockedRegexNames = new ArrayList<>(); |
| |
| @Inject |
| public BlockedNameFilter(PluginConfigFactory cfgFactory, @PluginName String pluginName) { |
| this.cfg = cfgFactory.getFromGerritConfig(pluginName); |
| parseConfig(); |
| } |
| |
| public boolean isBlocked(String username) { |
| username = username.toLowerCase(); |
| return isBlockedByExactName(username) |
| || isBlockedByWildcard(username) |
| || isBlockedByRegex(username); |
| } |
| |
| private void parseConfig() { |
| for (String s : cfg.getStringList("block")) { |
| if (s.startsWith("^")) { |
| blockedRegexNames.add(Pattern.compile(s, Pattern.CASE_INSENSITIVE | Pattern.UNICODE_CASE)); |
| } else if (s.endsWith("*")) { |
| blockedNamePrefixes.add(s.substring(0, s.length() - 1).toLowerCase()); |
| } else { |
| blockedExactNames.add(s.toLowerCase()); |
| } |
| } |
| } |
| |
| private boolean isBlockedByExactName(String username) { |
| return blockedExactNames.contains(username); |
| } |
| |
| private boolean isBlockedByWildcard(String username) { |
| for (String prefix : blockedNamePrefixes) { |
| if (username.startsWith(prefix)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| private boolean isBlockedByRegex(String username) { |
| for (Pattern p : blockedRegexNames) { |
| if (p.matcher(username).find()) { |
| return true; |
| } |
| } |
| return false; |
| } |
| } |