prosody
84162b81c863
util/http.lua

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util/http.lua @ 5458:84162b81c863

net.http, util.http: Move definitions of urlencode/decode and formencode/decode to util.http (possible to use them without unnecessary network-related dependencies)
author Matthew Wild <mwild1@gmail.com>
date Thu, 11 Apr 2013 17:32:59 +0100
parent 5299:cc9d460aa779
child 5471:34bfd26525f5
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5299
cc9d460aa779 util.http: New module for HTTP helper functions
Florian Zeitz <florob@babelmonkeys.de>
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1 -- Prosody IM
cc9d460aa779 util.http: New module for HTTP helper functions
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2 -- Copyright (C) 2013 Florian Zeitz
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3 --
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4 -- This project is MIT/X11 licensed. Please see the
cc9d460aa779 util.http: New module for HTTP helper functions
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5 -- COPYING file in the source package for more information.
cc9d460aa779 util.http: New module for HTTP helper functions
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6 --
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7
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8 local http = {};
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9
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10 function http.urlencode(s)
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11 return s and (s:gsub("[^a-zA-Z0-9.~_-]", function (c) return format("%%%02x", c:byte()); end));
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12 end
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13 function http.urldecode(s)
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14 return s and (s:gsub("%%(%x%x)", function (c) return char(tonumber(c,16)); end));
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15 end
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16
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17 local function _formencodepart(s)
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18 return s and (s:gsub("%W", function (c)
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19 if c ~= " " then
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20 return format("%%%02x", c:byte());
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21 else
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22 return "+";
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23 end
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24 end));
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25 end
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26
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27 function http.formencode(form)
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28 local result = {};
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29 if form[1] then -- Array of ordered { name, value }
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30 for _, field in ipairs(form) do
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31 t_insert(result, _formencodepart(field.name).."=".._formencodepart(field.value));
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32 end
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33 else -- Unordered map of name -> value
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34 for name, value in pairs(form) do
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35 t_insert(result, _formencodepart(name).."=".._formencodepart(value));
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36 end
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37 end
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38 return t_concat(result, "&");
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39 end
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40
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41 function http.formdecode(s)
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42 if not s:match("=") then return urldecode(s); end
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43 local r = {};
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44 for k, v in s:gmatch("([^=&]*)=([^&]*)") do
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45 k, v = k:gsub("%+", "%%20"), v:gsub("%+", "%%20");
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46 k, v = urldecode(k), urldecode(v);
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47 t_insert(r, { name = k, value = v });
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48 r[k] = v;
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49 end
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50 return r;
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51 end
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52
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53 function http.contains_token(field, token)
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54 field = ","..field:gsub("[ \t]", ""):lower()..",";
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55 return field:find(","..token:lower()..",", 1, true) ~= nil;
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56 end
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57
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58
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59
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60 return http;