ignore ArgumentError when clarifying an id using text that makes Base…

…64 decode angry

Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    obfuscate (0.0.2)
+    obfuscate (0.0.4)
       crypt19 (~> 1.2.0)
 
 GEM

lib/obfuscate/obfuscatable.rb

@@ -58,7 +58,11 @@ def find_by_obfuscated_id( text )
           # Clarifies obfuscated Model id
           # @return [String]
           def clarify_id( text )
-            self.obfuscatable_crypt.clarify( text, :block )
+            begin
+              self.obfuscatable_crypt.clarify( text, :block )
+            rescue ArgumentError
+              # invalid text passed in, causing a Base64 decode error, ignore.
+            end
           end
 
           # Clarify obfuscated text.

lib/obfuscate/version.rb

@@ -14,5 +14,5 @@
 # the License.
 
 module Obfuscate
-  VERSION = "0.0.3"
+  VERSION = "0.0.4"
 end

spec/lib/obfuscate/ofuscatable_spec.rb

@@ -53,6 +53,11 @@
       model.clarify_id( model.obfuscated_id ).to_i.should eql model.id
     end
 
+    it "should ignore bad obfuscated id" do
+      model.clarify_id( 7 ).should be_nil
+      model.clarify_id( "!@#$@%@#%@^%" ).should be_nil
+    end
+
     it "should find_by_obfuscated_id" do
       Message.find_by_obfuscated_id( model.obfuscated_id ).should eql model
     end