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util/http.lua @ 11096:dd1713862c20
net.http.server: Default to HTTP result code 500 when promise is rejected
author | Matthew Wild <mwild1@gmail.com> |
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date | Mon, 28 Sep 2020 16:21:41 +0100 |
parent | 9785:ff88b03c343f |
child | 13124:f15e23840780 |
rev | line source |
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util.http: New module for HTTP helper functions
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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 = pairs, ipairs; |
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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 url_codes = {}; |
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13 for i = 0, 255 do |
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14 local c = char(i); |
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15 local u = format("%%%02x", i); |
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16 url_codes[c] = u; |
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17 url_codes[u] = c; |
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18 url_codes[u:upper()] = c; |
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19 end |
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20 local function urlencode(s) |
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21 return s and (s:gsub("[^a-zA-Z0-9.~_-]", url_codes)); |
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22 end |
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23 local function urldecode(s) |
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24 return s and (s:gsub("%%%x%x", url_codes)); |
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25 end |
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26 |
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27 local function _formencodepart(s) |
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28 return s and (urlencode(s):gsub("%%20", "+")); |
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29 end |
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30 |
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31 local function formencode(form) |
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32 local result = {}; |
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33 if form[1] then -- Array of ordered { name, value } |
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34 for _, field in ipairs(form) do |
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35 t_insert(result, _formencodepart(field.name).."=".._formencodepart(field.value)); |
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36 end |
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37 else -- Unordered map of name -> value |
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38 for name, value in pairs(form) do |
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39 t_insert(result, _formencodepart(name).."=".._formencodepart(value)); |
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40 end |
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41 end |
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42 return t_concat(result, "&"); |
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43 end |
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44 |
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45 local function formdecode(s) |
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46 if not s:match("=") then return urldecode(s); end |
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47 local r = {}; |
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48 for k, v in s:gmatch("([^=&]*)=([^&]*)") do |
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49 k, v = k:gsub("%+", "%%20"), v:gsub("%+", "%%20"); |
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50 k, v = urldecode(k), urldecode(v); |
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51 t_insert(r, { name = k, value = v }); |
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52 r[k] = v; |
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53 end |
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54 return r; |
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55 end |
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56 |
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57 local function contains_token(field, token) |
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58 field = ","..field:gsub("[ \t]", ""):lower()..","; |
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59 return field:find(","..token:lower()..",", 1, true) ~= nil; |
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60 end |
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61 |
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62 local function normalize_path(path, is_dir) |
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63 if is_dir then |
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64 if path:sub(-1,-1) ~= "/" then path = path.."/"; end |
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65 else |
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66 if path:sub(-1,-1) == "/" then path = path:sub(1, -2); end |
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67 end |
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68 if path:sub(1,1) ~= "/" then path = "/"..path; end |
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69 return path; |
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70 end |
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71 |
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72 return { |
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73 urlencode = urlencode, urldecode = urldecode; |
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74 formencode = formencode, formdecode = formdecode; |
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75 contains_token = contains_token; |
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76 normalize_path = normalize_path; |
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77 }; |