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util/caps.lua @ 13265:6ac5ad578565
mod_cron: Load last task run time inside task runner to fix async
This ensures that all interactions with storage happen inside an async
thread, allowing async waiting to be performed in storage drivers.
author | Kim Alvefur <zash@zash.se> |
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date | Sat, 14 Oct 2023 22:32:33 +0200 |
parent | 12975:d10957394a3c |
rev | line source |
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1 -- Prosody IM |
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2 -- Copyright (C) 2008-2010 Matthew Wild |
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3 -- Copyright (C) 2008-2010 Waqas Hussain |
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4 -- |
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5 -- This project is MIT/X11 licensed. Please see the |
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6 -- COPYING file in the source package for more information. |
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7 -- |
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8 |
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9 local base64 = require "prosody.util.encodings".base64.encode; |
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10 local sha1 = require "prosody.util.hashes".sha1; |
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11 |
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12 local t_insert, t_sort, t_concat = table.insert, table.sort, table.concat; |
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13 local ipairs = ipairs; |
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14 |
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15 local _ENV = nil; |
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16 -- luacheck: std none |
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17 |
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18 local function calculate_hash(disco_info) |
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19 local identities, features, extensions = {}, {}, {}; |
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20 for _, tag in ipairs(disco_info) do |
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21 if tag.name == "identity" then |
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22 t_insert(identities, (tag.attr.category or "").."\0"..(tag.attr.type or "").."\0"..(tag.attr["xml:lang"] or "").."\0"..(tag.attr.name or "")); |
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23 elseif tag.name == "feature" then |
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24 t_insert(features, tag.attr.var or ""); |
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25 elseif tag.name == "x" and tag.attr.xmlns == "jabber:x:data" then |
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26 local form = {}; |
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27 local FORM_TYPE; |
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28 for _, field in ipairs(tag.tags) do |
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29 if field.name == "field" and field.attr.var then |
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30 local values = {}; |
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31 for _, val in ipairs(field.tags) do |
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32 val = #val.tags == 0 and val:get_text(); |
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33 if val then t_insert(values, val); end |
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34 end |
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35 t_sort(values); |
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36 if field.attr.var == "FORM_TYPE" then |
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37 FORM_TYPE = values[1]; |
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38 elseif #values > 0 then |
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39 t_insert(form, field.attr.var.."\0"..t_concat(values, "<")); |
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40 else |
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41 t_insert(form, field.attr.var); |
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42 end |
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43 end |
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44 end |
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45 t_sort(form); |
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46 form = t_concat(form, "<"); |
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47 if FORM_TYPE then form = FORM_TYPE.."\0"..form; end |
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48 t_insert(extensions, form); |
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49 end |
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50 end |
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51 t_sort(identities); |
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52 t_sort(features); |
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53 t_sort(extensions); |
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54 if #identities > 0 then identities = t_concat(identities, "<"):gsub("%z", "/").."<"; else identities = ""; end |
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55 if #features > 0 then features = t_concat(features, "<").."<"; else features = ""; end |
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56 if #extensions > 0 then extensions = t_concat(extensions, "<"):gsub("%z", "<").."<"; else extensions = ""; end |
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57 local S = identities..features..extensions; |
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58 local ver = base64(sha1(S)); |
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59 return ver, S; |
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60 end |
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61 |
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62 return { |
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63 calculate_hash = calculate_hash; |
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64 }; |