| commit | author | age | ||
| 04a985 | 1 | /* |
| JM | 2 | * Copyright 2013 gitblit.com. |
| 3 | * | |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
| 5 | * you may not use this file except in compliance with the License. | |
| 6 | * You may obtain a copy of the License at | |
| 7 | * | |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 9 | * | |
| 10 | * Unless required by applicable law or agreed to in writing, software | |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 13 | * See the License for the specific language governing permissions and | |
| 14 | * limitations under the License. | |
| 15 | */ | |
| 16 | package com.gitblit.auth; | |
| 17 | ||
| 18 | import java.io.File; | |
| 19 | ||
| 20 | import org.jvnet.libpam.PAM; | |
| 21 | import org.jvnet.libpam.PAMException; | |
| 22 | import org.jvnet.libpam.impl.CLibrary; | |
| 23 | ||
| 24 | import com.gitblit.Constants; | |
| 25 | import com.gitblit.Constants.AccountType; | |
| 6e3481 | 26 | import com.gitblit.Constants.Role; |
| 04a985 | 27 | import com.gitblit.Keys; |
| JM | 28 | import com.gitblit.auth.AuthenticationProvider.UsernamePasswordAuthenticationProvider; |
| 6e3481 | 29 | import com.gitblit.models.TeamModel; |
| 04a985 | 30 | import com.gitblit.models.UserModel; |
| JM | 31 | |
| 32 | /** | |
| 33 | * Implementation of PAM authentication for Linux/Unix/MacOSX. | |
| 34 | * | |
| 35 | * @author James Moger | |
| 36 | */ | |
| 37 | public class PAMAuthProvider extends UsernamePasswordAuthenticationProvider { | |
| 38 | ||
| 39 | public PAMAuthProvider() { | |
| 40 | super("pam"); | |
| 41 | } | |
| 42 | ||
| 43 | @Override | |
| 44 | public void setup() { | |
| 45 | // Try to identify the passwd database | |
| 46 | String [] files = { "/etc/shadow", "/etc/master.passwd" }; | |
| 47 | File passwdFile = null; | |
| 48 | for (String name : files) { | |
| 49 | File f = new File(name); | |
| 50 | if (f.exists()) { | |
| 51 | passwdFile = f; | |
| 52 | break; | |
| 53 | } | |
| 54 | } | |
| 55 | if (passwdFile == null) { | |
| 56 | logger.error("PAM Authentication could not find a passwd database!"); | |
| 57 | } else if (!passwdFile.canRead()) { | |
| 58 | logger.error("PAM Authentication can not read passwd database {}! PAM authentications may fail!", passwdFile); | |
| 59 | } | |
| 60 | } | |
| 61 | ||
| 62 | @Override | |
| 63 | public boolean supportsCredentialChanges() { | |
| 64 | return false; | |
| 65 | } | |
| 66 | ||
| 67 | @Override | |
| 68 | public boolean supportsDisplayNameChanges() { | |
| 69 | return true; | |
| 70 | } | |
| 71 | ||
| 72 | @Override | |
| 73 | public boolean supportsEmailAddressChanges() { | |
| 74 | return true; | |
| 75 | } | |
| 76 | ||
| 77 | @Override | |
| 78 | public boolean supportsTeamMembershipChanges() { | |
| 79 | return true; | |
| 80 | } | |
| 81 | ||
| 6e3481 | 82 | @Override |
| JM | 83 | public boolean supportsRoleChanges(UserModel user, Role role) { |
| 84 | return true; | |
| 85 | } | |
| 86 | ||
| 87 | @Override | |
| 88 | public boolean supportsRoleChanges(TeamModel team, Role role) { | |
| 89 | return true; | |
| 90 | } | |
| 91 | ||
| 04a985 | 92 | @Override |
| JM | 93 | public AccountType getAccountType() { |
| 94 | return AccountType.PAM; | |
| 95 | } | |
| 96 | ||
| 97 | @Override | |
| 98 | public UserModel authenticate(String username, char[] password) { | |
| 99 | if (CLibrary.libc.getpwnam(username) == null) { | |
| 100 | logger.warn("Can not get PAM passwd for " + username); | |
| 101 | return null; | |
| 102 | } | |
| 103 | ||
| 104 | PAM pam = null; | |
| 105 | try { | |
| 106 | String serviceName = settings.getString(Keys.realm.pam.serviceName, "system-auth"); | |
| 107 | pam = new PAM(serviceName); | |
| 108 | pam.authenticate(username, new String(password)); | |
| 109 | } catch (PAMException e) { | |
| 110 | logger.error(e.getMessage()); | |
| 111 | return null; | |
| 112 | } finally { | |
| 1fb542 | 113 | if (pam != null) { |
| JM | 114 | pam.dispose(); |
| 115 | } | |
| 04a985 | 116 | } |
| JM | 117 | |
| 118 | UserModel user = userManager.getUserModel(username); | |
| c1b0e4 | 119 | if (user == null) { |
| JM | 120 | // create user object for new authenticated user |
| 04a985 | 121 | user = new UserModel(username.toLowerCase()); |
| c1b0e4 | 122 | } |
| 04a985 | 123 | |
| JM | 124 | // create a user cookie |
| c1b0e4 | 125 | setCookie(user, password); |
| 04a985 | 126 | |
| JM | 127 | // update user attributes from UnixUser |
| 128 | user.accountType = getAccountType(); | |
| 129 | user.password = Constants.EXTERNAL_ACCOUNT; | |
| 130 | ||
| 131 | // TODO consider mapping PAM groups to teams | |
| 132 | ||
| 133 | // push the changes to the backing user service | |
| 134 | updateUser(user); | |
| 135 | ||
| 136 | return user; | |
| 137 | } | |
| 138 | } | |
