source: trunk/grails-app/controllers/LoginController.groovy @ 967

Revision 172, 5.4 KB checked in by gav, 9 years ago (diff)

Fix LoginController? null object bug introduced at r166.

Line 
1import org.codehaus.groovy.grails.plugins.springsecurity.RedirectUtils
2import org.grails.plugins.springsecurity.service.AuthenticateService
3
4import org.springframework.security.AuthenticationTrustResolverImpl
5import org.springframework.security.DisabledException
6import org.springframework.security.context.SecurityContextHolder as SCH
7import org.springframework.security.ui.AbstractProcessingFilter
8import org.springframework.security.ui.webapp.AuthenticationProcessingFilter
9
10/**
11 * Login Controller (Example).
12 */
13class LoginController {
14
15    /**
16    * Dependency injection for the authentication service.
17    */
18    def authenticateService
19
20    /**
21        * Dependency injection for OpenIDConsumer.
22        */
23    def openIDConsumer
24
25    /**
26    * Dependency injection for OpenIDAuthenticationProcessingFilter.
27    */
28    def openIDAuthenticationProcessingFilter
29
30    private final authenticationTrustResolver = new AuthenticationTrustResolverImpl()
31
32    def index = {
33        if (isLoggedIn()) {
34            redirect uri: '/'
35        }
36        else {
37            redirect action: auth, params: params
38        }
39    }
40
41    def loggedOut = {
42        flash['message'] = 'Successfully logged out'
43        auth()
44    }
45
46    /**
47    * Show the login page.
48    */
49    def auth = {
50
51        nocache(response)
52
53        if (isLoggedIn()) {
54            redirect uri: '/'
55            return
56        }
57
58        String view
59        String postUrl
60        def config = authenticateService.securityConfig.security
61        if (config.useOpenId) {
62            view = 'openIdAuth'
63            postUrl = "${request.contextPath}/login/openIdAuthenticate"
64        }
65        else if (config.useFacebook) {
66            view = 'facebookAuth'
67            postUrl = "${request.contextPath}${config.facebook.filterProcessesUrl}"
68        }
69        else {
70            view = 'auth'
71            postUrl = "${request.contextPath}${config.filterProcessesUrl}"
72        }
73
74        render view: view, model: [postUrl: postUrl]
75    }
76
77    /**
78    * Form submit action to start an OpenID authentication.
79    */
80    def openIdAuthenticate = {
81        String openID = params['j_username']
82        try {
83            String returnToURL = RedirectUtils.buildRedirectUrl(
84                    request, response, openIDAuthenticationProcessingFilter.filterProcessesUrl)
85            String redirectUrl = openIDConsumer.beginConsumption(request, openID, returnToURL)
86            redirect url: redirectUrl
87        }
88        catch (org.springframework.security.ui.openid.OpenIDConsumerException e) {
89            log.error "Consumer error: $e.message", e
90            redirect url: openIDAuthenticationProcessingFilter.authenticationFailureUrl
91        }
92    }
93
94    // Login page (function|json) for Ajax access.
95    def authAjax = {
96        nocache(response)
97        //this is example:
98        render """
99        <script type='text/javascript'>
100        (function() {
101            loginForm();
102        })();
103        </script>
104        """
105    }
106
107    /**
108    * The Ajax success redirect url.
109    */
110    def ajaxSuccess = {
111        nocache(response)
112        render '{success: true}'
113    }
114
115    /**
116    * Show denied page.
117    */
118    def denied = {
119        if (isLoggedIn() && authenticationTrustResolver.isRememberMe(SCH.context?.authentication)) {
120            // have cookie but the page is guarded with IS_AUTHENTICATED_FULLY
121            redirect action: full, params: params
122        }
123    }
124
125    /**
126    * Login page for users with a remember-me cookie but accessing a IS_AUTHENTICATED_FULLY page.
127    */
128    def full = {
129        render view: 'auth', params: params,
130            model: [hasCookie: authenticationTrustResolver.isRememberMe(SCH.context?.authentication)]
131    }
132
133    // Denial page (data|view|json) for Ajax access.
134    def deniedAjax = {
135        //this is example:
136        render "{error: 'access denied'}"
137    }
138
139    /**
140    * login failed
141    */
142    def authfail = {
143
144        def username = session[AuthenticationProcessingFilter.SPRING_SECURITY_LAST_USERNAME_KEY]
145        def msg = ''
146        def person = Person.findByLoginName(username)
147        def exception = session[AbstractProcessingFilter.SPRING_SECURITY_LAST_EXCEPTION_KEY]
148        if (exception) {
149            if (exception instanceof DisabledException) {
150                msg = "[$username] is disabled."
151            }
152            else if (person?.authorities?.isEmpty()) {
153                msg = "[$username] has no granted authority."
154            }
155            else {
156                msg = "[$username] wrong username/password."
157            }
158        }
159
160        if (isAjax()) {
161            render "{error: '${msg}'}"
162        }
163        else {
164            flash.message = msg
165            redirect action: auth, params: params
166        }
167    }
168
169    /**
170    * Check if logged in.
171    */
172    private boolean isLoggedIn() {
173        return authenticateService.isLoggedIn()
174    }
175
176    private boolean isAjax() {
177        return authenticateService.isAjax(request)
178    }
179
180    /** cache controls */
181    private void nocache(response) {
182        response.setHeader('Cache-Control', 'no-cache') // HTTP 1.1
183        response.addDateHeader('Expires', 0)
184        response.setDateHeader('max-age', 0)
185        response.setIntHeader ('Expires', -1) //prevents caching at the proxy server
186        response.addHeader('cache-Control', 'private') //IE5.x only
187    }
188}
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