Minor change to CAS authentification and plugin. -ref#3940

main/auth/cas/authcas.php

@@ -9,18 +9,38 @@ require_once(api_get_path(SYS_PATH).'main/auth/cas/cas_var.inc.php');
 require_once(api_get_path(SYS_PATH).'main/auth/external_login/ldap.inc.php');
 require_once(api_get_path(SYS_PATH).'main/auth/external_login/functions.inc.php');
 
+
+
+/**
+* @return true if cas is configured
+*
+**/
+function cas_configured() {
+	global $cas_auth_ver, $cas_auth_server, $cas_auth_port, $cas_auth_uri; 
+    $res = false;
+    if (!empty($cas_auth_ver) && !empty($cas_auth_server) && !empty($cas_auth_port)) {
+        $res = true;
+    }
+    return $res;
+}
+
+
+
 /**
 * checks if the user already get a session
 * @return the user login if the user already has a session ,false otherwise
 **/
 
-
 function cas_is_authenticated()
 {
 	global $cas_auth_ver, $cas_auth_server, $cas_auth_port, $cas_auth_uri; 
 	global $PHPCAS_CLIENT;
 	global $logout;
 
+    if (!cas_configured()) {
+        return;
+    }
+
 
 	if (!is_object($PHPCAS_CLIENT) ) 
 	{

main/auth/cas/logincas.php

@@ -16,9 +16,15 @@ require_once (api_get_path(LIBRARY_PATH).'events.lib.inc.php');
 require_once('authcas.php');
 global $cas_auth_ver, $cas_auth_server, $cas_auth_port, $cas_auth_uri; 
 // phpCAS
-if (!is_object($PHPCAS_CLIENT) ) {
-	phpCAS::client($cas_auth_ver,$cas_auth_server,$cas_auth_port,$cas_auth_uri);
-	phpCAS::setNoCasServerValidation();
+
+if (cas_configured()) {
+    if (!is_object($PHPCAS_CLIENT) ) {
+    	phpCAS::client($cas_auth_ver,$cas_auth_server,$cas_auth_port,$cas_auth_uri);
+    	phpCAS::setNoCasServerValidation();
+    }
+    phpCAS::forceAuthentication();
+    header('Location: '.api_get_path(WEB_PATH).api_get_setting('page_after_login'));
+}
+else {
+    header('Location: '.api_get_path(WEB_PATH));
 }
-phpCAS::forceAuthentication();
-header('Location: '.api_get_path(WEB_PATH).api_get_setting('page_after_login'));

plugin/add_cas_login_button/index.php

@@ -1,9 +1,12 @@
 <?php
 // Show the CAS button to login using CAS
+require_once(api_get_path(SYS_PATH).'main/auth/cas/authcas.php');
 
 $_template['show_message']   = false;
 
-if (api_is_anonymous() && api_get_setting('cas_activate') == 'true') {
+if (api_is_anonymous()) {
+    $_template['cas_activated'] = api_is_cas_activated();
+    $_template['cas_configured'] = cas_configured();
     $_template['show_message']   = true;
     // the default title
     $button_label = "Connexion via CAS";
@@ -18,4 +21,4 @@ if (api_is_anonymous() && api_get_setting('cas_activate') == 'true') {
     $_template['button_label'] = $button_label;
     $_template['comm_label'] = $comm_label;
     $_template['url_label'] = $url_label;
-}
+}

plugin/add_cas_login_button/template.tpl

@@ -24,7 +24,7 @@
     4. Read more
         You can also see more examples in the the main/template/default/layout files
         
-    5. {$_p|var_dump} pour les path {$_u|var_dump} pour info de  l'utilisateur loggé
+    5. {$_p|var_dump} pour les path {$_u|var_dump} pour info de  l'utilisateur loggé
 #}
 
 
@@ -39,6 +39,14 @@
             <div class='cas_plugin_clear'>&nbsp;</div>
         {% endif %}
         <div class='cas_plugin_comm'>{{add_cas_login_button.comm_label}}</div>
-        <button class="btn" onclick="javascript:self.location.href='main/auth/cas/logincas.php'">{{"LoginEnter"|get_lang}}</button>    
+        {% if add_cas_login_button.cas_activated %}
+            {% if add_cas_login_button.cas_configured %}
+                <button class="btn" onclick="javascript:self.location.href='main/auth/cas/logincas.php'">{{"LoginEnter"|get_lang}}</button>    
+            {% else %}
+                CAS isn't configured. Go to Admin > Configuration > CAS.<br/>
+            {% endif %}
+        {% else %}
+            CAS isn't activated. Go to Admin > Configuration > CAS.<br/>
+        {% endif %}
     </div>
 {% endif %}