org/argeo/cms/auth/UserAdminLoginModule.java

   1 package org.argeo.cms.auth;
   2
   3 import static org.argeo.naming.LdapAttrs.cn;
   4
   5 import java.io.IOException;
   6 import java.security.PrivilegedAction;
   7 import java.util.Arrays;
   8 import java.util.HashSet;
   9 import java.util.List;
  10 import java.util.Locale;
  11 import java.util.Map;
  12 import java.util.Set;
  13
  14 import javax.naming.ldap.LdapName;
  15 import javax.security.auth.Subject;
  16 import javax.security.auth.callback.Callback;
  17 import javax.security.auth.callback.CallbackHandler;
  18 import javax.security.auth.callback.LanguageCallback;
  19 import javax.security.auth.callback.NameCallback;
  20 import javax.security.auth.callback.PasswordCallback;
  21 import javax.security.auth.callback.UnsupportedCallbackException;
  22 import javax.security.auth.kerberos.KerberosPrincipal;
  23 import javax.security.auth.login.CredentialNotFoundException;
  24 import javax.security.auth.login.LoginException;
  25 import javax.security.auth.spi.LoginModule;
  26 import javax.servlet.http.HttpServletRequest;
  27
  28 import org.apache.commons.logging.Log;
  29 import org.apache.commons.logging.LogFactory;
  30 import org.argeo.cms.CmsException;
  31 import org.argeo.cms.internal.kernel.Activator;
  32 import org.argeo.naming.LdapAttrs;
  33 import org.argeo.node.NodeConstants;
  34 import org.argeo.node.security.CryptoKeyring;
  35 import org.argeo.osgi.useradmin.AuthenticatingUser;
  36 import org.argeo.osgi.useradmin.IpaUtils;
  37 import org.argeo.osgi.useradmin.OsUserUtils;
  38 import org.argeo.osgi.useradmin.TokenUtils;
  39 import org.osgi.framework.BundleContext;
  40 import org.osgi.framework.FrameworkUtil;
  41 import org.osgi.framework.ServiceReference;
  42 import org.osgi.service.useradmin.Authorization;
  43 import org.osgi.service.useradmin.Group;
  44 import org.osgi.service.useradmin.User;
  45 import org.osgi.service.useradmin.UserAdmin;
  46
  47 public class UserAdminLoginModule implements LoginModule {
  48         private final static Log log = LogFactory.getLog(UserAdminLoginModule.class);
  49
  50         private Subject subject;
  51         private CallbackHandler callbackHandler;
  52         private Map<String, Object> sharedState = null;
  53
  54         private List<String> indexedUserProperties = Arrays
  55                         .asList(new String[] { LdapAttrs.mail.name(), LdapAttrs.uid.name(), LdapAttrs.authPassword.name() });
  56
  57         // private state
  58         private BundleContext bc;
  59         private User authenticatedUser = null;
  60         private Locale locale;
  61
  62         private Authorization bindAuthorization = null;
  63
  64         private boolean singleUser = Activator.isSingleUser();
  65
  66         @SuppressWarnings("unchecked")
  67         @Override
  68         public void initialize(Subject subject, CallbackHandler callbackHandler, Map<String, ?> sharedState,
  69                         Map<String, ?> options) {
  70                 this.subject = subject;
  71                 try {
  72                         bc = FrameworkUtil.getBundle(UserAdminLoginModule.class).getBundleContext();
  73                         this.callbackHandler = callbackHandler;
  74                         this.sharedState = (Map<String, Object>) sharedState;
  75                 } catch (Exception e) {
  76                         throw new CmsException("Cannot initialize login module", e);
  77                 }
  78         }
  79
  80         @Override
  81         public boolean login() throws LoginException {
  82                 UserAdmin userAdmin = Activator.getUserAdmin();
  83                 final String username;
  84                 final char[] password;
  85                 Object certificateChain = null;
  86                 if (sharedState.containsKey(CmsAuthUtils.SHARED_STATE_NAME)
  87                                 && sharedState.containsKey(CmsAuthUtils.SHARED_STATE_PWD)) {
  88                         // NB: required by Basic http auth
  89                         username = (String) sharedState.get(CmsAuthUtils.SHARED_STATE_NAME);
  90                         password = (char[]) sharedState.get(CmsAuthUtils.SHARED_STATE_PWD);
  91                         // // TODO locale?
  92                 } else if (sharedState.containsKey(CmsAuthUtils.SHARED_STATE_NAME)
  93                                 && sharedState.containsKey(CmsAuthUtils.SHARED_STATE_CERTIFICATE_CHAIN)) {
  94                         String certDn = (String) sharedState.get(CmsAuthUtils.SHARED_STATE_NAME);
  95 //                      LdapName ldapName;
  96 //                      try {
  97 //                              ldapName = new LdapName(certificateName);
  98 //                      } catch (InvalidNameException e) {
  99 //                              e.printStackTrace();
 100 //                              return false;
 101 //                      }
 102 //                      username = ldapName.getRdn(ldapName.size() - 1).getValue().toString();
 103                         username = certDn;
 104                         certificateChain = sharedState.get(CmsAuthUtils.SHARED_STATE_CERTIFICATE_CHAIN);
 105                         password = null;
 106                 } else if (singleUser) {
 107                         username = OsUserUtils.getOsUsername();
 108                         password = null;
 109                 } else {
 110
 111                         // ask for username and password
 112                         NameCallback nameCallback = new NameCallback("User");
 113                         PasswordCallback passwordCallback = new PasswordCallback("Password", false);
 114                         LanguageCallback langCallback = new LanguageCallback();
 115                         try {
 116                                 callbackHandler.handle(new Callback[] { nameCallback, passwordCallback, langCallback });
 117                         } catch (IOException e) {
 118                                 throw new LoginException("Cannot handle callback: " + e.getMessage());
 119                         } catch (UnsupportedCallbackException e) {
 120                                 return false;
 121                         }
 122
 123                         // i18n
 124                         locale = langCallback.getLocale();
 125                         if (locale == null)
 126                                 locale = Locale.getDefault();
 127                         // FIXME add it to Subject
 128                         // Locale.setDefault(locale);
 129
 130                         username = nameCallback.getName();
 131                         if (username == null || username.trim().equals("")) {
 132                                 // authorization = userAdmin.getAuthorization(null);
 133                                 throw new CredentialNotFoundException("No credentials provided");
 134                         }
 135                         if (passwordCallback.getPassword() != null)
 136                                 password = passwordCallback.getPassword();
 137                         else
 138                                 throw new CredentialNotFoundException("No credentials provided");
 139                         sharedState.put(CmsAuthUtils.SHARED_STATE_NAME, username);
 140                         sharedState.put(CmsAuthUtils.SHARED_STATE_PWD, password);
 141                 }
 142                 User user = searchForUser(userAdmin, username);
 143
 144                 // Tokens
 145                 if (user == null) {
 146                         String token = username;
 147                         Group tokenGroup = searchForToken(userAdmin, token);
 148                         if (tokenGroup != null) {
 149                                 Authorization tokenAuthorization = getAuthorizationFromToken(userAdmin, tokenGroup);
 150                                 if (tokenAuthorization != null) {
 151                                         bindAuthorization = tokenAuthorization;
 152                                         authenticatedUser = (User) userAdmin.getRole(bindAuthorization.getName());
 153                                         return true;
 154                                 }
 155                         }
 156                 }
 157
 158                 if (user == null)
 159                         return true;// expect Kerberos
 160
 161                 if (password != null) {
 162                         // try bind first
 163                         try {
 164                                 AuthenticatingUser authenticatingUser = new AuthenticatingUser(user.getName(), password);
 165                                 bindAuthorization = userAdmin.getAuthorization(authenticatingUser);
 166                                 // TODO check tokens as well
 167                                 if (bindAuthorization != null) {
 168                                         authenticatedUser = user;
 169                                         return true;
 170                                 }
 171                         } catch (Exception e) {
 172                                 // silent
 173                                 if (log.isTraceEnabled())
 174                                         log.trace("Bind failed", e);
 175                         }
 176
 177                         // works only if a connection password is provided
 178                         if (!user.hasCredential(null, password)) {
 179                                 return false;
 180                         }
 181                 } else if (certificateChain != null) {
 182                         // TODO check CRLs/OSCP validity?
 183                         // NB: authorization in commit() will work only if an LDAP connection password
 184                         // is provided
 185                 } else if (singleUser) {
 186                         // TODO verify IP address?
 187                 } else {
 188                         throw new CredentialNotFoundException("No credentials provided");
 189                 }
 190
 191                 authenticatedUser = user;
 192                 return true;
 193         }
 194
 195         @Override
 196         public boolean commit() throws LoginException {
 197                 if (locale == null)
 198                         subject.getPublicCredentials().add(Locale.getDefault());
 199                 else
 200                         subject.getPublicCredentials().add(locale);
 201
 202                 if (singleUser) {
 203                         OsUserUtils.loginAsSystemUser(subject);
 204                 }
 205                 UserAdmin userAdmin = Activator.getUserAdmin();
 206                 Authorization authorization;
 207                 if (callbackHandler == null) {// anonymous
 208                         authorization = userAdmin.getAuthorization(null);
 209                 } else if (bindAuthorization != null) {// bind
 210                         authorization = bindAuthorization;
 211                 } else {// Kerberos
 212                         User authenticatingUser;
 213                         Set<KerberosPrincipal> kerberosPrincipals = subject.getPrincipals(KerberosPrincipal.class);
 214                         if (kerberosPrincipals.isEmpty()) {
 215                                 if (authenticatedUser == null) {
 216                                         if (log.isTraceEnabled())
 217                                                 log.trace("Neither kerberos nor user admin login succeeded. Login failed.");
 218                                         return false;
 219                                 } else {
 220                                         authenticatingUser = authenticatedUser;
 221                                 }
 222                         } else {
 223                                 KerberosPrincipal kerberosPrincipal = kerberosPrincipals.iterator().next();
 224                                 LdapName dn = IpaUtils.kerberosToDn(kerberosPrincipal.getName());
 225                                 authenticatingUser = new AuthenticatingUser(dn);
 226                                 if (authenticatedUser != null && !authenticatingUser.getName().equals(authenticatedUser.getName()))
 227                                         throw new LoginException("Kerberos login " + authenticatingUser.getName()
 228                                                         + " is inconsistent with user admin login " + authenticatedUser.getName());
 229                         }
 230                         authorization = Subject.doAs(subject, new PrivilegedAction<Authorization>() {
 231
 232                                 @Override
 233                                 public Authorization run() {
 234                                         Authorization authorization = userAdmin.getAuthorization(authenticatingUser);
 235                                         return authorization;
 236                                 }
 237
 238                         });
 239                         if (authorization == null)
 240                                 throw new LoginException(
 241                                                 "User admin found no authorization for authenticated user " + authenticatingUser.getName());
 242                 }
 243
 244                 // Log and monitor new login
 245                 HttpServletRequest request = (HttpServletRequest) sharedState.get(CmsAuthUtils.SHARED_STATE_HTTP_REQUEST);
 246                 CmsAuthUtils.addAuthorization(subject, authorization, locale, request);
 247
 248                 // Unlock keyring (underlying login to the JCR repository)
 249                 char[] password = (char[]) sharedState.get(CmsAuthUtils.SHARED_STATE_PWD);
 250                 if (password != null) {
 251                         ServiceReference<CryptoKeyring> keyringSr = bc.getServiceReference(CryptoKeyring.class);
 252                         if (keyringSr != null) {
 253                                 CryptoKeyring keyring = bc.getService(keyringSr);
 254                                 Subject.doAs(subject, new PrivilegedAction<Void>() {
 255
 256                                         @Override
 257                                         public Void run() {
 258                                                 try {
 259                                                         keyring.unlock(password);
 260                                                 } catch (Exception e) {
 261                                                         e.printStackTrace();
 262                                                         log.warn("Could not unlock keyring with the password provided by " + authorization.getName()
 263                                                                         + ": " + e.getMessage());
 264                                                 }
 265                                                 return null;
 266                                         }
 267
 268                                 });
 269                         }
 270                 }
 271
 272                 // Register CmsSession with initial subject
 273                 CmsAuthUtils.registerSessionAuthorization(request, subject, authorization, locale);
 274
 275                 if (log.isDebugEnabled())
 276                         log.debug("Logged in to CMS: " + subject);
 277                 return true;
 278         }
 279
 280         @Override
 281         public boolean abort() throws LoginException {
 282                 return true;
 283         }
 284
 285         @Override
 286         public boolean logout() throws LoginException {
 287                 if (log.isTraceEnabled())
 288                         log.trace("Logging out from CMS... " + subject);
 289                 // boolean httpSessionLogoutOk = CmsAuthUtils.logoutSession(bc,
 290                 // subject);
 291                 CmsAuthUtils.cleanUp(subject);
 292                 return true;
 293         }
 294
 295         protected User searchForUser(UserAdmin userAdmin, String providedUsername) {
 296                 try {
 297                         // TODO check value null or empty
 298                         Set<User> collectedUsers = new HashSet<>();
 299                         // try dn
 300                         User user = null;
 301                         // try all indexes
 302                         for (String attr : indexedUserProperties) {
 303                                 user = userAdmin.getUser(attr, providedUsername);
 304                                 if (user != null)
 305                                         collectedUsers.add(user);
 306                         }
 307                         if (collectedUsers.size() == 1) {
 308                                 user = collectedUsers.iterator().next();
 309                                 return user;
 310                         } else if (collectedUsers.size() > 1) {
 311                                 log.warn(collectedUsers.size() + " users for provided username" + providedUsername);
 312                         }
 313                         // try DN as a last resort
 314                         try {
 315                                 user = (User) userAdmin.getRole(providedUsername);
 316                                 if (user != null)
 317                                         return user;
 318                         } catch (Exception e) {
 319                                 // silent
 320                         }
 321                         return null;
 322                 } catch (Exception e) {
 323                         if (log.isTraceEnabled())
 324                                 log.warn("Cannot search for user " + providedUsername, e);
 325                         return null;
 326                 }
 327
 328         }
 329
 330         protected Group searchForToken(UserAdmin userAdmin, String token) {
 331                 String dn = cn + "=" + token + "," + NodeConstants.TOKENS_BASEDN;
 332                 Group tokenGroup = (Group) userAdmin.getRole(dn);
 333                 return tokenGroup;
 334         }
 335
 336         protected Authorization getAuthorizationFromToken(UserAdmin userAdmin, Group tokenGroup) {
 337                 if (TokenUtils.isExpired(tokenGroup))
 338                         return null;
 339 //              String expiryDateStr = (String) tokenGroup.getProperties().get(description.name());
 340 //              if (expiryDateStr != null) {
 341 //                      Instant expiryDate = NamingUtils.ldapDateToInstant(expiryDateStr);
 342 //                      if (expiryDate.isBefore(Instant.now())) {
 343 //                              if (log.isDebugEnabled())
 344 //                                      log.debug("Token " + tokenGroup.getName() + " has expired.");
 345 //                              return null;
 346 //                      }
 347 //              }
 348                 Authorization auth = userAdmin.getAuthorization(tokenGroup);
 349                 return auth;
 350         }
 351 }