Line data    Source code

       1             : // Copyright (C) 2016 The Android Open Source Project
       2             : //
       3             : // Licensed under the Apache License, Version 2.0 (the "License");
       4             : // you may not use this file except in compliance with the License.
       5             : // You may obtain a copy of the License at
       6             : //
       7             : // http://www.apache.org/licenses/LICENSE-2.0
       8             : //
       9             : // Unless required by applicable law or agreed to in writing, software
      10             : // distributed under the License is distributed on an "AS IS" BASIS,
      11             : // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      12             : // See the License for the specific language governing permissions and
      13             : // limitations under the License.
      14             : 
      15             : package com.google.gerrit.server.account;
      16             : 
      17             : import com.google.common.annotations.VisibleForTesting;
      18             : import com.google.common.base.Splitter;
      19             : import com.google.gerrit.entities.Account;
      20             : import java.util.ArrayList;
      21             : import java.util.Collection;
      22             : import java.util.List;
      23             : import java.util.Optional;
      24             : import java.util.regex.Pattern;
      25             : 
      26           0 : public class AuthorizedKeys {
      27             :   public static final String FILE_NAME = "authorized_keys";
      28             : 
      29             :   @VisibleForTesting public static final String INVALID_KEY_COMMENT_PREFIX = "# INVALID ";
      30             : 
      31             :   @VisibleForTesting public static final String DELETED_KEY_COMMENT = "# DELETED";
      32             : 
      33          17 :   private static final Pattern LINE_SPLIT_PATTERN = Pattern.compile("\\r?\\n");
      34             : 
      35             :   public static List<Optional<AccountSshKey>> parse(Account.Id accountId, String s) {
      36          17 :     List<Optional<AccountSshKey>> keys = new ArrayList<>();
      37          17 :     int seq = 1;
      38          17 :     for (String line : Splitter.on(LINE_SPLIT_PATTERN).split(s)) {
      39          17 :       line = line.trim();
      40          17 :       if (line.isEmpty()) {
      41          17 :         continue;
      42          17 :       } else if (line.startsWith(INVALID_KEY_COMMENT_PREFIX)) {
      43           2 :         String pub = line.substring(INVALID_KEY_COMMENT_PREFIX.length());
      44           2 :         AccountSshKey key = AccountSshKey.createInvalid(accountId, seq++, pub);
      45           2 :         keys.add(Optional.of(key));
      46          17 :       } else if (line.startsWith(DELETED_KEY_COMMENT)) {
      47           3 :         keys.add(Optional.empty());
      48           3 :         seq++;
      49          17 :       } else if (line.startsWith("#")) {
      50           0 :         continue;
      51             :       } else {
      52          17 :         AccountSshKey key = AccountSshKey.create(accountId, seq++, line);
      53          17 :         keys.add(Optional.of(key));
      54             :       }
      55          17 :     }
      56          17 :     return keys;
      57             :   }
      58             : 
      59             :   public static String serialize(Collection<Optional<AccountSshKey>> keys) {
      60          17 :     StringBuilder b = new StringBuilder();
      61          17 :     for (Optional<AccountSshKey> key : keys) {
      62          17 :       if (key.isPresent()) {
      63          17 :         if (!key.get().valid()) {
      64           2 :           b.append(INVALID_KEY_COMMENT_PREFIX);
      65             :         }
      66          17 :         b.append(key.get().sshPublicKey().trim());
      67             :       } else {
      68           4 :         b.append(DELETED_KEY_COMMENT);
      69             :       }
      70          17 :       b.append("\n");
      71          17 :     }
      72          17 :     return b.toString();
      73             :   }
      74             : }