1 files changed, 29 insertions, 7 deletions

diff --git a/util/stanza.lua b/util/stanza.lua
index a457e619..08ef2c9a 100644
--- a/util/stanza.lua
+++ b/util/stanza.lua
@@ -67,7 +67,7 @@ end
 
 function stanza_mt:text(text)
 	(self.last_add[#self.last_add] or self):add_direct_child(text);
-	return self; 
+	return self;
 end
 
 function stanza_mt:up()
@@ -97,7 +97,7 @@ end
 
 function stanza_mt:get_child(name, xmlns)
 	for _, child in ipairs(self.tags) do
-		if (not name or child.name == name) 
+		if (not name or child.name == name)
 			and ((not xmlns and self.attr.xmlns == child.attr.xmlns)
 				or child.attr.xmlns == xmlns) then
 			
@@ -107,13 +107,13 @@ function stanza_mt:get_child(name, xmlns)
 end
 
 function stanza_mt:child_with_name(name)
-	for _, child in ipairs(self.tags) do	
+	for _, child in ipairs(self.tags) do
 		if child.name == name then return child; end
 	end
 end
 
 function stanza_mt:child_with_ns(ns)
-	for _, child in ipairs(self.tags) do	
+	for _, child in ipairs(self.tags) do
 		if child.attr.xmlns == ns then return child; end
 	end
 end
@@ -125,7 +125,6 @@ function stanza_mt:children()
 			local v = a[i]
 			if v then return v; end
 		end, self, i;
-	                                    
 end
 function stanza_mt:childtags()
 	local i = 0;
@@ -134,7 +133,6 @@ function stanza_mt:childtags()
 			local v = self.tags[i]
 			if v then return v; end
 		end, self.tags[1], i;
-	                                    
 end
 
 local xml_escape
@@ -193,6 +191,30 @@ function stanza_mt.get_text(t)
 	end
 end
 
+function stanza_mt.get_error(stanza)
+	local type, condition, text;
+	
+	local error_tag = stanza:get_child("error");
+	if not error_tag then
+		return nil, nil, nil;
+	end
+	type = error_tag.attr.type;
+	
+	for child in error_tag:children() do
+		if child.attr.xmlns == xmlns_stanzas then
+			if not text and child.name == "text" then
+				text = child:get_text();
+			elseif not condition then
+				condition = child.name;
+			end
+			if condition and text then
+				break;
+			end
+		end
+	end
+	return type, condition or "undefined-condition", text or "";
+end
+
 function stanza_mt.__add(s1, s2)
 	return s1:add_direct_child(s2);
 end
@@ -322,7 +344,7 @@ if do_pretty_printing then
 	function stanza_mt.pretty_print(t)
 		local children_text = "";
 		for n, child in ipairs(t) do
-			if type(child) == "string" then	
+			if type(child) == "string" then
 				children_text = children_text .. xml_escape(child);
 			else
 				children_text = children_text .. child:pretty_print();