From 40fec9502cad2dc2f1a9d54e287e4f1d054ede63 Mon Sep 17 00:00:00 2001
From: jfederico <jesus@123it.ca>
Date: Tue, 16 Oct 2012 12:14:16 -0400
Subject: [PATCH] bbb-lti v0.1: Made "consumers" parameter configurable
 Signed-off-by: jfederico <jesus@123it.ca>

---
 bbb-lti/grails-app/conf/lti.properties        |  1 +
 .../controllers/ToolController.groovy         | 26 ++++++----------
 bbb-lti/grails-app/services/LtiService.groovy | 30 +++++++++++++++++++
 3 files changed, 40 insertions(+), 17 deletions(-)

diff --git a/bbb-lti/grails-app/conf/lti.properties b/bbb-lti/grails-app/conf/lti.properties
index 3fcce5f571..23454c1f9f 100644
--- a/bbb-lti/grails-app/conf/lti.properties
+++ b/bbb-lti/grails-app/conf/lti.properties
@@ -17,4 +17,5 @@ beans.bigbluebuttonService.url=${bigbluebuttonURL}
 beans.bigbluebuttonService.salt=${bigbluebuttonSalt}
 
 beans.ltiService.ltiEndPoint=${bigbluebuttonLtiEndPoint}
+beans.ltiService.consumers=demo:welcome,user1:secret1
 
diff --git a/bbb-lti/grails-app/controllers/ToolController.groovy b/bbb-lti/grails-app/controllers/ToolController.groovy
index 61a2cf42e1..b4e5f0599b 100644
--- a/bbb-lti/grails-app/controllers/ToolController.groovy
+++ b/bbb-lti/grails-app/controllers/ToolController.groovy
@@ -63,7 +63,8 @@ class ToolController {
     BigbluebuttonService bigbluebuttonService
     
     def index = { 
-        log.debug CONTROLLER_NAME + "#index"
+        if( ltiService.consumerMap == null) ltiService.initConsumerMap()
+        log.debug CONTROLLER_NAME + "#index" + ltiService.consumerMap
 
         def resultMessageKey = "init"
         def resultMessage = "init"
@@ -74,7 +75,7 @@ class ToolController {
         if (hasAllRequiredParams(params, missingParams)) {
             def sanitizedParams = sanitizePrametersForBaseString(params)
 
-            consumer = getConsumer(params)
+            consumer = ltiService.getConsumer(params.get(CONSUMER_ID))
             if (consumer != null) {
                 log.debug "Found consumer with key " + consumer.get("key")
                 if (checkValidSignature(request.getMethod().toUpperCase(), retrieveLtiEndpoint(), consumer.get("secret"), sanitizedParams, params.get(OAUTH_SIGNATURE))) {
@@ -152,6 +153,12 @@ class ToolController {
 
     }
     
+    def retrieveLtiEndpoint() {
+        String ltiEndPoint = ltiService.ltiEndPoint
+        log.debug "basicLtiEndPoint [" + ltiEndPoint + "]"
+        return ltiEndPoint
+    }
+
     def test = {
         log.debug CONTROLLER_NAME + "#index"
         
@@ -266,19 +273,4 @@ class ToolController {
         return calculatedSignature.equals(signature)
     }
 
-    private Map<String, String> getConsumer(params) {
-        Map<String, String> consumer = new HashMap<String, String>()
-        
-        consumer.put("key", "demo");
-        consumer.put("secret", "welcome")
-        
-        return consumer
-    }
-
-    def retrieveLtiEndpoint() {
-        String ltiEndPoint = ltiService.ltiEndPoint
-        log.debug "basicLtiEndPoint [" + ltiEndPoint + "]"
-        return ltiEndPoint
-    }
-
 }
diff --git a/bbb-lti/grails-app/services/LtiService.groovy b/bbb-lti/grails-app/services/LtiService.groovy
index dd51410054..9936d05082 100644
--- a/bbb-lti/grails-app/services/LtiService.groovy
+++ b/bbb-lti/grails-app/services/LtiService.groovy
@@ -1,4 +1,6 @@
 
+import java.util.Map;
+
 import javax.crypto.spec.SecretKeySpec
 import javax.crypto.Mac
 import org.apache.commons.codec.binary.Base64
@@ -8,7 +10,35 @@ class LtiService {
     boolean transactional = false
     
     def ltiEndPoint = "http://192.168.0.153/lti/tool.xml"
+    def consumers = "demo:welcome"
+    Map<String, String> consumerMap
+    
+    
+    private Map<String, String> getConsumer(consumerId) {
+        Map<String, String> consumer = null
+        
+        if( this.consumerMap.containsKey(consumerId) ){
+            consumer = new HashMap<String, String>()
+            consumer.put("key", consumerId);
+            consumer.put("secret",  this.consumerMap.get(consumerId))
+        }
+        
+        return consumer
+    }
 
+    private void initConsumerMap(){
+        this.consumerMap = new HashMap<String, String>()
+        String[] consumers = this.consumers.split(",")
+        for( int i=0; i < consumers.length; i++){
+            String[] consumer = consumers[i].split(":")
+            if( consumer.length == 2 ){
+                this.consumerMap.put(consumer[0], consumer[1])
+            }
+        }
+        
+    }
+
+    
     public String sign(String sharedSecret, String data) throws Exception
     {
         Mac mac = setKey(sharedSecret)