Catch URI parsing RuntimeException in OAuthRequest (issue207074)

[johnfargo]

Reviewers: shindig.remailer_gmail.com,

Description:
Improves error handling for this case.
Please review this at http://codereview.appspot.com/207074/show

Affected files:
   
java/gadgets/src/main/java/org/apache/shindig/gadgets/oauth/OAuthRequest.java


Index:  
java/gadgets/src/main/java/org/apache/shindig/gadgets/oauth/OAuthRequest.java
===================================================================
---  
java/gadgets/src/main/java/org/apache/shindig/gadgets/oauth/OAuthRequest.java	 
(revision 909189)
+++  
java/gadgets/src/main/java/org/apache/shindig/gadgets/oauth/OAuthRequest.java	 
(working copy)
@@ -500,7 +500,13 @@
       case URL_ONLY:
         break;
       case URL_AND_FORM_PARAMS:
-         
params.addAll(sanitize(OAuth.decodeForm(base.getPostBodyAsString())));
+        try {
+           
params.addAll(sanitize(OAuth.decodeForm(base.getPostBodyAsString())));
+        } catch (IllegalArgumentException e) {
+          // Occurs if OAuth.decodeForm finds an invalid URL to decode.
+          throw  
responseParams.oauthRequestException(OAuthError.INVALID_REQUEST,
+              "Could not decode body", e);
+        }
         break;
       case URL_AND_BODY_HASH:
         try {