security/eclipse/plugins/org.argeo.security.equinox/src/main/java/org/argeo/security/equinox/SpringLoginModule.java

   1 package org.argeo.security.equinox;
   2
   3 import java.util.Map;
   4
   5 import javax.security.auth.Subject;
   6 import javax.security.auth.callback.Callback;
   7 import javax.security.auth.callback.CallbackHandler;
   8 import javax.security.auth.callback.NameCallback;
   9 import javax.security.auth.callback.PasswordCallback;
  10 import javax.security.auth.callback.TextOutputCallback;
  11 import javax.security.auth.login.LoginException;
  12
  13 import org.springframework.security.Authentication;
  14 import org.springframework.security.AuthenticationException;
  15 import org.springframework.security.AuthenticationManager;
  16 import org.springframework.security.BadCredentialsException;
  17 import org.springframework.security.context.SecurityContextHolder;
  18 import org.springframework.security.providers.UsernamePasswordAuthenticationToken;
  19 import org.springframework.security.providers.jaas.SecurityContextLoginModule;
  20
  21 public class SpringLoginModule extends SecurityContextLoginModule {
  22         private AuthenticationManager authenticationManager;
  23         private Subject subject;
  24
  25         private CallbackHandler callbackHandler;
  26
  27         public SpringLoginModule() {
  28
  29         }
  30
  31         @SuppressWarnings("rawtypes")
  32         public void initialize(Subject subject, CallbackHandler callbackHandler,
  33                         Map sharedState, Map options) {
  34                 super.initialize(subject, callbackHandler, sharedState, options);
  35                 this.subject = subject;
  36                 this.callbackHandler = callbackHandler;
  37         }
  38
  39         public boolean login() throws LoginException {
  40                 // thread already logged in
  41                 if (SecurityContextHolder.getContext().getAuthentication() != null)
  42                         return super.login();
  43
  44                 if (subject.getPrincipals(Authentication.class).size() == 1) {
  45                         registerAuthentication(subject.getPrincipals(Authentication.class)
  46                                         .iterator().next());
  47                         return super.login();
  48                 } else if (subject.getPrincipals(Authentication.class).size() > 1) {
  49                         throw new LoginException(
  50                                         "Multiple Authentication principals not supported: "
  51                                                         + subject.getPrincipals(Authentication.class));
  52                 } else {
  53                         // ask for username and password
  54                         Callback label = new TextOutputCallback(
  55                                         TextOutputCallback.INFORMATION, "Required login");
  56                         NameCallback nameCallback = new NameCallback("User");
  57                         PasswordCallback passwordCallback = new PasswordCallback(
  58                                         "Password", false);
  59
  60                         if (callbackHandler == null) {
  61                                 // throw new LoginException("No call back handler available");
  62                                 return false;
  63                         }
  64                         try {
  65                                 callbackHandler.handle(new Callback[] { label, nameCallback,
  66                                                 passwordCallback });
  67                         } catch (Exception e) {
  68                                 LoginException le = new LoginException(
  69                                                 "Callback handling failed");
  70                                 le.initCause(e);
  71                                 throw le;
  72                         }
  73
  74                         // Set user name and password
  75                         String username = nameCallback.getName();
  76                         String password = "";
  77                         if (passwordCallback.getPassword() != null) {
  78                                 password = String.valueOf(passwordCallback.getPassword());
  79                         }
  80                         UsernamePasswordAuthenticationToken credentials = new UsernamePasswordAuthenticationToken(
  81                                         username, password);
  82
  83                         try {
  84                                 Authentication authentication = authenticationManager
  85                                                 .authenticate(credentials);
  86                                 registerAuthentication(authentication);
  87                                 return super.login();
  88                         } catch (Exception e) {
  89                                 LoginException loginException = new LoginException(
  90                                                 "Bad credentials");
  91                                 loginException.initCause(e);
  92                                 throw loginException;
  93                         }
  94                 }
  95         }
  96
  97         /**
  98          * Register an {@link Authentication} in the security context.
  99          *
 100          * @param authentication
 101          *            has to implement {@link Authentication}.
 102          */
 103         protected void registerAuthentication(Object authentication) {
 104                 SecurityContextHolder.getContext().setAuthentication(
 105                                 (Authentication) authentication);
 106         }
 107
 108         public void setAuthenticationManager(
 109                         AuthenticationManager authenticationManager) {
 110                 this.authenticationManager = authenticationManager;
 111         }
 112
 113 }