From de0774edeb86c34afd55b5c83007e334ae213ff7 Mon Sep 17 00:00:00 2001
From: Zaid Abdulla <zkam83@gmail.com>
Date: Sat, 10 May 2014 16:22:40 +0300
Subject: [PATCH] Added config option (IGNORE_XML_NAMESPACES) to make XML
 traversal using element local names only as a workaroud for XML namespace
 issues in some devices. Fixes #7.

---
 lib/config.coffee |  1 +
 lib/soap.coffee   | 11 +++++++++++
 2 files changed, 12 insertions(+)

diff --git a/lib/config.coffee b/lib/config.coffee
index fdd646e..ddb823e 100644
--- a/lib/config.coffee
+++ b/lib/config.coffee
@@ -18,6 +18,7 @@ exports.LOG_INFORMS = false
 exports.DEBUG_DEVICES = {} # {'202BC1-BM632w-8KA8WA1151100043' : true}
 exports.DEVICE_ONLINE_THRESHOLD = 4000
 exports.RETRY_DELAY = 300
+exports.IGNORE_XML_NAMESPACES = false # Traverse XML using element's local name only
 
 exports.MONGODB_OPTIONS = {
   db : {
diff --git a/lib/soap.coffee b/lib/soap.coffee
index 496fdcf..0a222ce 100644
--- a/lib/soap.coffee
+++ b/lib/soap.coffee
@@ -1,3 +1,4 @@
+config = require './config'
 libxmljs = require 'libxmljs'
 
 SERVER_NAME = "GenieACS/#{require('../package.json').version}"
@@ -41,6 +42,16 @@ NAMESPACES = {
 }
 
 
+# Workaround for devices that don't use correct namespace declarations or prefixes
+if config.IGNORE_XML_NAMESPACES
+  libxmljs.Element.prototype.__find = libxmljs.Element.prototype.find
+  libxmljs.Element.prototype.find = (xpath, namespaces) ->
+    # Modify xpath queries to work regardless of element's namespace
+    p = xpath.replace(/([^\/:]+:)?([^\/]+)(\/|$)/g, '$2$3') \
+      .replace(/([a-zA-Z0-9_-]+)([^\/]*)(\/|$)/g, "*[local-name()='$1']$2$3")
+    libxmljs.Element.prototype.__find.call(this, p, namespaces)
+
+
 # Separation by comma is important as some devices don't comform to standard
 COOKIE_REGEX = /\s*([a-zA-Z0-9\-_]+?)\s*=\s*"?([a-zA-Z0-9\-_]*?)"?\s*(,|;|$)/g