jasongilman · October 12, 2012 17:06 · Oct 12, 2012
diff --git a/torquebox_backslash_fix_middleware.rb b/torquebox_backslash_fix_middleware.rb
@@ -0,0 +1,52 @@
+require 'uri'
+
+# There's a bug in jboss or torquebox where encoded backslashes in URLs are incorrectly converted into forward slashes.
+# This is rack middleware that detects when the original request included a backslash and will correct the env variable
+# before forwarding it to the other middleware
+# See https://issues.jboss.org/browse/TORQUE-955
+class TorqueboxBackslashFixMiddleware
+
+  ENCODED_BACKSLASH = "%5C"
+
+  def initialize(app)
+    @app = app
+  end
+
+  def call(env)
+    original_request = env["servlet_request"].get_request_url.to_s
+
+    if original_request.include?(ENCODED_BACKSLASH)
+      puts "Found URL with encoded backslash: #{original_request}"
+      uri = URI(original_request)
+      decoded_path = URI.decode(uri.path)
+      fix_env_value(env, "ORIGINAL_FULLPATH", decoded_path)
+      fix_env_value(env, "REQUEST_URI", decoded_path)
+
+      if application_context.length > 0 && uri.path.start_with?(application_context)
+        fix_env_value(env, "PATH_INFO", URI.decode(uri.path.sub(application_context,"")))
+      else
+        fix_env_value(env, "PATH_INFO", decoded_path)
+      end
+
+      if uri.query && uri.query.size > 0
+        fix_env_value(env, "QUERY_STRING", URI.decode(uri.query))
+      end
+    end
+
+    @app.call(env)
+  end
+
+  # The context at which the application is deployed. Determine what this is set to is application dependent.
+  def application_context
+    APP_CONFIG["relative_root_url"]||""
+  end
+
+  # Checks if key is set in env. If it is it is updated to the new_value.
+  def fix_env_value(env, key, new_value)
+    if env.has_key?(key)
+      prev_value = env[key]
+      env[key] = new_value
+      puts "Request env key #{key} corrected from [#{prev_value}] to [#{new_value}]"
+    end
+  end
+end
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