org.argeo.cms/src/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                 boolean preauth = false;
  87                 if (sharedState.containsKey(CmsAuthUtils.SHARED_STATE_NAME)
  88                                 && sharedState.containsKey(CmsAuthUtils.SHARED_STATE_PWD)) {
  89                         // NB: required by Basic http auth
  90                         username = (String) sharedState.get(CmsAuthUtils.SHARED_STATE_NAME);
  91                         password = (char[]) sharedState.get(CmsAuthUtils.SHARED_STATE_PWD);
  92                         // // TODO locale?
  93                 } else if (sharedState.containsKey(CmsAuthUtils.SHARED_STATE_NAME)
  94                                 && sharedState.containsKey(CmsAuthUtils.SHARED_STATE_CERTIFICATE_CHAIN)) {
  95                         String certDn = (String) sharedState.get(CmsAuthUtils.SHARED_STATE_NAME);
  96 //                      LdapName ldapName;
  97 //                      try {
  98 //                              ldapName = new LdapName(certificateName);
  99 //                      } catch (InvalidNameException e) {
 100 //                              e.printStackTrace();
 101 //                              return false;
 102 //                      }
 103 //                      username = ldapName.getRdn(ldapName.size() - 1).getValue().toString();
 104                         username = certDn;
 105                         certificateChain = sharedState.get(CmsAuthUtils.SHARED_STATE_CERTIFICATE_CHAIN);
 106                         password = null;
 107                 } else if (sharedState.containsKey(CmsAuthUtils.SHARED_STATE_NAME)
 108                                 && sharedState.containsKey(CmsAuthUtils.SHARED_STATE_REMOTE_ADDR)
 109                                 && sharedState.containsKey(CmsAuthUtils.SHARED_STATE_REMOTE_PORT)) {// ident
 110                         username = (String) sharedState.get(CmsAuthUtils.SHARED_STATE_NAME);
 111                         password = null;
 112                         preauth = true;
 113                 } else if (singleUser) {
 114                         username = OsUserUtils.getOsUsername();
 115                         password = null;
 116                 } else {
 117
 118                         // ask for username and password
 119                         NameCallback nameCallback = new NameCallback("User");
 120                         PasswordCallback passwordCallback = new PasswordCallback("Password", false);
 121                         LanguageCallback langCallback = new LanguageCallback();
 122                         try {
 123                                 callbackHandler.handle(new Callback[] { nameCallback, passwordCallback, langCallback });
 124                         } catch (IOException e) {
 125                                 throw new LoginException("Cannot handle callback: " + e.getMessage());
 126                         } catch (UnsupportedCallbackException e) {
 127                                 return false;
 128                         }
 129
 130                         // i18n
 131                         locale = langCallback.getLocale();
 132                         if (locale == null)
 133                                 locale = Locale.getDefault();
 134                         // FIXME add it to Subject
 135                         // Locale.setDefault(locale);
 136
 137                         username = nameCallback.getName();
 138                         if (username == null || username.trim().equals("")) {
 139                                 // authorization = userAdmin.getAuthorization(null);
 140                                 throw new CredentialNotFoundException("No credentials provided");
 141                         }
 142                         if (passwordCallback.getPassword() != null)
 143                                 password = passwordCallback.getPassword();
 144                         else
 145                                 throw new CredentialNotFoundException("No credentials provided");
 146                         sharedState.put(CmsAuthUtils.SHARED_STATE_NAME, username);
 147                         sharedState.put(CmsAuthUtils.SHARED_STATE_PWD, password);
 148                 }
 149                 User user = searchForUser(userAdmin, username);
 150
 151                 // Tokens
 152                 if (user == null) {
 153                         String token = username;
 154                         Group tokenGroup = searchForToken(userAdmin, token);
 155                         if (tokenGroup != null) {
 156                                 Authorization tokenAuthorization = getAuthorizationFromToken(userAdmin, tokenGroup);
 157                                 if (tokenAuthorization != null) {
 158                                         bindAuthorization = tokenAuthorization;
 159                                         authenticatedUser = (User) userAdmin.getRole(bindAuthorization.getName());
 160                                         return true;
 161                                 }
 162                         }
 163                 }
 164
 165                 if (user == null)
 166                         return true;// expect Kerberos
 167
 168                 if (password != null) {
 169                         // try bind first
 170                         try {
 171                                 AuthenticatingUser authenticatingUser = new AuthenticatingUser(user.getName(), password);
 172                                 bindAuthorization = userAdmin.getAuthorization(authenticatingUser);
 173                                 // TODO check tokens as well
 174                                 if (bindAuthorization != null) {
 175                                         authenticatedUser = user;
 176                                         return true;
 177                                 }
 178                         } catch (Exception e) {
 179                                 // silent
 180                                 if (log.isTraceEnabled())
 181                                         log.trace("Bind failed", e);
 182                         }
 183
 184                         // works only if a connection password is provided
 185                         if (!user.hasCredential(null, password)) {
 186                                 return false;
 187                         }
 188                 } else if (certificateChain != null) {
 189                         // TODO check CRLs/OSCP validity?
 190                         // NB: authorization in commit() will work only if an LDAP connection password
 191                         // is provided
 192                 } else if (singleUser) {
 193                         // TODO verify IP address?
 194                 } else if (preauth) {
 195                         // ident
 196                 } else {
 197                         throw new CredentialNotFoundException("No credentials provided");
 198                 }
 199
 200                 authenticatedUser = user;
 201                 return true;
 202         }
 203
 204         @Override
 205         public boolean commit() throws LoginException {
 206                 if (locale == null)
 207                         subject.getPublicCredentials().add(Locale.getDefault());
 208                 else
 209                         subject.getPublicCredentials().add(locale);
 210
 211                 if (singleUser) {
 212                         OsUserUtils.loginAsSystemUser(subject);
 213                 }
 214                 UserAdmin userAdmin = Activator.getUserAdmin();
 215                 Authorization authorization;
 216                 if (callbackHandler == null) {// anonymous
 217                         authorization = userAdmin.getAuthorization(null);
 218                 } else if (bindAuthorization != null) {// bind
 219                         authorization = bindAuthorization;
 220                 } else {// Kerberos
 221                         User authenticatingUser;
 222                         Set<KerberosPrincipal> kerberosPrincipals = subject.getPrincipals(KerberosPrincipal.class);
 223                         if (kerberosPrincipals.isEmpty()) {
 224                                 if (authenticatedUser == null) {
 225                                         if (log.isTraceEnabled())
 226                                                 log.trace("Neither kerberos nor user admin login succeeded. Login failed.");
 227                                         return false;
 228                                 } else {
 229                                         authenticatingUser = authenticatedUser;
 230                                 }
 231                         } else {
 232                                 KerberosPrincipal kerberosPrincipal = kerberosPrincipals.iterator().next();
 233                                 LdapName dn = IpaUtils.kerberosToDn(kerberosPrincipal.getName());
 234                                 authenticatingUser = new AuthenticatingUser(dn);
 235                                 if (authenticatedUser != null && !authenticatingUser.getName().equals(authenticatedUser.getName()))
 236                                         throw new LoginException("Kerberos login " + authenticatingUser.getName()
 237                                                         + " is inconsistent with user admin login " + authenticatedUser.getName());
 238                         }
 239                         authorization = Subject.doAs(subject, new PrivilegedAction<Authorization>() {
 240
 241                                 @Override
 242                                 public Authorization run() {
 243                                         Authorization authorization = userAdmin.getAuthorization(authenticatingUser);
 244                                         return authorization;
 245                                 }
 246
 247                         });
 248                         if (authorization == null)
 249                                 throw new LoginException(
 250                                                 "User admin found no authorization for authenticated user " + authenticatingUser.getName());
 251                 }
 252
 253                 // Log and monitor new login
 254                 HttpServletRequest request = (HttpServletRequest) sharedState.get(CmsAuthUtils.SHARED_STATE_HTTP_REQUEST);
 255                 CmsAuthUtils.addAuthorization(subject, authorization);
 256
 257                 // Unlock keyring (underlying login to the JCR repository)
 258                 char[] password = (char[]) sharedState.get(CmsAuthUtils.SHARED_STATE_PWD);
 259                 if (password != null) {
 260                         ServiceReference<CryptoKeyring> keyringSr = bc.getServiceReference(CryptoKeyring.class);
 261                         if (keyringSr != null) {
 262                                 CryptoKeyring keyring = bc.getService(keyringSr);
 263                                 Subject.doAs(subject, new PrivilegedAction<Void>() {
 264
 265                                         @Override
 266                                         public Void run() {
 267                                                 try {
 268                                                         keyring.unlock(password);
 269                                                 } catch (Exception e) {
 270                                                         e.printStackTrace();
 271                                                         log.warn("Could not unlock keyring with the password provided by " + authorization.getName()
 272                                                                         + ": " + e.getMessage());
 273                                                 }
 274                                                 return null;
 275                                         }
 276
 277                                 });
 278                         }
 279                 }
 280
 281                 // Register CmsSession with initial subject
 282                 CmsAuthUtils.registerSessionAuthorization(request, subject, authorization, locale);
 283
 284                 if (log.isDebugEnabled())
 285                         log.debug("Logged in to CMS: " + subject);
 286                 return true;
 287         }
 288
 289         @Override
 290         public boolean abort() throws LoginException {
 291                 return true;
 292         }
 293
 294         @Override
 295         public boolean logout() throws LoginException {
 296                 if (log.isTraceEnabled())
 297                         log.trace("Logging out from CMS... " + subject);
 298                 // boolean httpSessionLogoutOk = CmsAuthUtils.logoutSession(bc,
 299                 // subject);
 300                 CmsAuthUtils.cleanUp(subject);
 301                 return true;
 302         }
 303
 304         protected User searchForUser(UserAdmin userAdmin, String providedUsername) {
 305                 try {
 306                         // TODO check value null or empty
 307                         Set<User> collectedUsers = new HashSet<>();
 308                         // try dn
 309                         User user = null;
 310                         // try all indexes
 311                         for (String attr : indexedUserProperties) {
 312                                 user = userAdmin.getUser(attr, providedUsername);
 313                                 if (user != null)
 314                                         collectedUsers.add(user);
 315                         }
 316                         if (collectedUsers.size() == 1) {
 317                                 user = collectedUsers.iterator().next();
 318                                 return user;
 319                         } else if (collectedUsers.size() > 1) {
 320                                 log.warn(collectedUsers.size() + " users for provided username" + providedUsername);
 321                         }
 322                         // try DN as a last resort
 323                         try {
 324                                 user = (User) userAdmin.getRole(providedUsername);
 325                                 if (user != null)
 326                                         return user;
 327                         } catch (Exception e) {
 328                                 // silent
 329                         }
 330                         return null;
 331                 } catch (Exception e) {
 332                         if (log.isTraceEnabled())
 333                                 log.warn("Cannot search for user " + providedUsername, e);
 334                         return null;
 335                 }
 336
 337         }
 338
 339         protected Group searchForToken(UserAdmin userAdmin, String token) {
 340                 String dn = cn + "=" + token + "," + NodeConstants.TOKENS_BASEDN;
 341                 Group tokenGroup = (Group) userAdmin.getRole(dn);
 342                 return tokenGroup;
 343         }
 344
 345         protected Authorization getAuthorizationFromToken(UserAdmin userAdmin, Group tokenGroup) {
 346                 if (TokenUtils.isExpired(tokenGroup))
 347                         return null;
 348 //              String expiryDateStr = (String) tokenGroup.getProperties().get(description.name());
 349 //              if (expiryDateStr != null) {
 350 //                      Instant expiryDate = NamingUtils.ldapDateToInstant(expiryDateStr);
 351 //                      if (expiryDate.isBefore(Instant.now())) {
 352 //                              if (log.isDebugEnabled())
 353 //                                      log.debug("Token " + tokenGroup.getName() + " has expired.");
 354 //                              return null;
 355 //                      }
 356 //              }
 357                 Authorization auth = userAdmin.getAuthorization(tokenGroup);
 358                 return auth;
 359         }
 360 }