added UserDetailsService example

openid-connect-client/README.md

@@ -98,6 +98,95 @@ The Authentication Filter uses the *oidcServerConfigs* property, a map of OIDC s
 	
 Again, you will need to implement your own UserDetailsService and configure as the above does with the reference to *myUserDetailsService*.	
 
+## Implementing your own UserDetailsService
+
+An example UserDetailsService for the Rave Portal follows:
+
+        package org.mitre.mpn.service.impl;
+        
+        import org.apache.rave.portal.model.NewUser;
+        import org.apache.rave.portal.model.User;
+        import org.apache.rave.portal.service.NewAccountService;
+        import org.apache.rave.portal.service.UserService;
+        import org.slf4j.Logger;
+        import org.slf4j.LoggerFactory;
+        import org.springframework.beans.factory.annotation.Autowired;
+        import org.springframework.security.core.userdetails.AuthenticationUserDetailsService;
+        import org.springframework.security.core.userdetails.UserDetails;
+        import org.springframework.security.core.userdetails.UserDetailsService;
+        import org.springframework.security.core.userdetails.UsernameNotFoundException;
+        
+        import org.mitre.openid.connect.client.OpenIdConnectAuthenticationToken;
+        
+        import org.springframework.stereotype.Service;
+        
+        import java.util.UUID;
+        
+        @Service(value = "myUserDetailsService")
+        public class MyUserDetailsService implements UserDetailsService,
+                AuthenticationUserDetailsService<OpenIdConnectAuthenticationToken> {
+        
+            private static final Logger log = LoggerFactory.getLogger(MpnUserDetailsService.class);
+
+            private final UserService userService;
+            private final NewAccountService newAccountService;
+
+            //TODO: This is temporarily hard-coded while we wait for the concept of Page Templates to be implemented in Rave
+            private static final String DEFAULT_LAYOUT_CODE = "columns_3";
+        
+            @Autowired
+            public MyUserDetailsService(UserService userService, NewAccountService newAccountService) {
+                this.userService = userService;
+                this.newAccountService = newAccountService;
+            }
+        
+            /* (non-Javadoc)
+             * @see org.springframework.security.core.userdetails.UserDetailsService#loadUserByUsername(java.lang.String)
+             */
+            public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
+                
+            	log.debug("loadUserByUsername called with: {}", username);
+                
+            	User user = userService.getUserByUsername(username);
+                
+                if (user == null) {
+                    throw new UsernameNotFoundException("User with username '" + username + "' was not found!");
+                }
+                
+                return user;
+            }
+        
+            /* (non-Javadoc)
+             * @see org.springframework.security.core.userdetails.AuthenticationUserDetailsService#loadUserDetails(org.springframework.security.core.Authentication)
+             */
+            public UserDetails loadUserDetails(OpenIdConnectAuthenticationToken token) throws UsernameNotFoundException {
+                log.debug("loadUserDetails called with: {}", token);
+        
+                User user = userService.getUserByUsername(token.getUserId());
+        
+                if (user == null) {
+                	
+                    NewUser newUser = new NewUser();
+                    newUser.setUsername(token.getUserId());
+                    newUser.setEmail(token.getUserId() + "@example.com");
+                    newUser.setPageLayout(DEFAULT_LAYOUT_CODE);
+                    newUser.setPassword(UUID.randomUUID().toString());
+                    
+                    try {
+                        newAccountService.createNewAccount(newUser);
+                    } catch (Exception e) {
+                        throw new RuntimeException(e);
+                    }
+        
+                    user = userService.getUserByUsername(token.getName());
+        
+                }
+                
+                return user;
+            }
+        }
+
+
 [OpenID Connect Standard]: http://openid.net/specs/openid-connect-standard-1_0.html "OpenID Connect Standard 1.0"
 [OpenID Connect Standard]: http://openid.net/specs/openid-connect-standard-1_0.html#code_flow "Authorization Code Flow, OpenID Connect Standard"
 [Issuer Identifier]: http://openid.net/specs/openid-connect-messages-1_0.html#issuer_identifier "Issuer Identifier"