prosody
1937b3c3efb5
util/http.lua

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util/http.lua @ 11540:1937b3c3efb5 0.11

mod_c2s, mod_s2s, mod_component, mod_bosh, mod_websockets: Set default stanza size limits c2s/bosh/ws streams will default to 256KB, s2s and components to 512KB. These values are aligned with ejabberd's default settings, which should reduce issues related to inconsistent size limits between servers on the XMPP network. The previous default (10MB) is excessive for any production server, and allows significant memory usage by even unauthenticated sessions.
author Matthew Wild <mwild1@gmail.com>
date Fri, 07 May 2021 17:03:49 +0100
parent 9504:cfbea3064aa9
child 9759:1af5106a2c34
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Florian Zeitz <florob@babelmonkeys.de>
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1 -- Prosody IM
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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
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5 -- COPYING file in the source package for more information.
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6 --
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7
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8 local format, char = string.format, string.char;
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9 local pairs, ipairs, tonumber = pairs, ipairs, tonumber;
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10 local t_insert, t_concat = table.insert, table.concat;
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11
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12 local function urlencode(s)
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13 return s and (s:gsub("[^a-zA-Z0-9.~_-]", function (c) return format("%%%02x", c:byte()); end));
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14 end
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15 local function urldecode(s)
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16 return s and (s:gsub("%%(%x%x)", function (c) return char(tonumber(c,16)); end));
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17 end
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18
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19 local function _formencodepart(s)
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20 return s and (s:gsub("%W", function (c)
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21 if c ~= " " then
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22 return format("%%%02x", c:byte());
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23 else
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24 return "+";
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25 end
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26 end));
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27 end
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28
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29 local function formencode(form)
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30 local result = {};
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31 if form[1] then -- Array of ordered { name, value }
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32 for _, field in ipairs(form) do
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33 t_insert(result, _formencodepart(field.name).."=".._formencodepart(field.value));
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34 end
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35 else -- Unordered map of name -> value
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36 for name, value in pairs(form) do
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37 t_insert(result, _formencodepart(name).."=".._formencodepart(value));
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38 end
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39 end
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40 return t_concat(result, "&");
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41 end
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42
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43 local function formdecode(s)
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44 if not s:match("=") then return urldecode(s); end
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45 local r = {};
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46 for k, v in s:gmatch("([^=&]*)=([^&]*)") do
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47 k, v = k:gsub("%+", "%%20"), v:gsub("%+", "%%20");
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48 k, v = urldecode(k), urldecode(v);
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49 t_insert(r, { name = k, value = v });
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50 r[k] = v;
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51 end
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52 return r;
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53 end
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54
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55 local function contains_token(field, token)
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56 field = ","..field:gsub("[ \t]", ""):lower()..",";
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57 return field:find(","..token:lower()..",", 1, true) ~= nil;
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58 end
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59
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60 local function normalize_path(path, is_dir)
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61 if is_dir then
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62 if path:sub(-1,-1) ~= "/" then path = path.."/"; end
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63 else
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64 if path:sub(-1,-1) == "/" then path = path:sub(1, -2); end
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65 end
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66 if path:sub(1,1) ~= "/" then path = "/"..path; end
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67 return path;
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68 end
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69
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70 return {
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71 urlencode = urlencode, urldecode = urldecode;
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72 formencode = formencode, formdecode = formdecode;
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73 contains_token = contains_token;
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74 normalize_path = normalize_path;
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75 };