--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/util/http.lua Thu Dec 25 10:48:06 2014 +0000
@@ -0,0 +1,64 @@
+-- Prosody IM
+-- Copyright (C) 2013 Florian Zeitz
+--
+-- This project is MIT/X11 licensed. Please see the
+-- COPYING file in the source package for more information.
+--
+
+local format, char = string.format, string.char;
+local pairs, ipairs, tonumber = pairs, ipairs, tonumber;
+local t_insert, t_concat = table.insert, table.concat;
+
+local function urlencode(s)
+ return s and (s:gsub("[^a-zA-Z0-9.~_-]", function (c) return format("%%%02x", c:byte()); end));
+end
+local function urldecode(s)
+ return s and (s:gsub("%%(%x%x)", function (c) return char(tonumber(c,16)); end));
+end
+
+local function _formencodepart(s)
+ return s and (s:gsub("%W", function (c)
+ if c ~= " " then
+ return format("%%%02x", c:byte());
+ else
+ return "+";
+ end
+ end));
+end
+
+local function formencode(form)
+ local result = {};
+ if form[1] then -- Array of ordered { name, value }
+ for _, field in ipairs(form) do
+ t_insert(result, _formencodepart(field.name).."=".._formencodepart(field.value));
+ end
+ else -- Unordered map of name -> value
+ for name, value in pairs(form) do
+ t_insert(result, _formencodepart(name).."=".._formencodepart(value));
+ end
+ end
+ return t_concat(result, "&");
+end
+
+local function formdecode(s)
+ if not s:match("=") then return urldecode(s); end
+ local r = {};
+ for k, v in s:gmatch("([^=&]*)=([^&]*)") do
+ k, v = k:gsub("%+", "%%20"), v:gsub("%+", "%%20");
+ k, v = urldecode(k), urldecode(v);
+ t_insert(r, { name = k, value = v });
+ r[k] = v;
+ end
+ return r;
+end
+
+local function contains_token(field, token)
+ field = ","..field:gsub("[ \t]", ""):lower()..",";
+ return field:find(","..token:lower()..",", 1, true) ~= nil;
+end
+
+return {
+ urlencode = urlencode, urldecode = urldecode;
+ formencode = formencode, formdecode = formdecode;
+ contains_token = contains_token;
+};