annotate mod_mam/rsm.lib.lua @ 4340:7cd3b7ec59e9

mod_http_oauth2: Rudimentary support for scopes (but not really) We don't support limiting access, but this change will inform the client what permissions the created token has (e.g. is the user an admin or not). There is some work in progress on real scope support.
author Matthew Wild <mwild1@gmail.com>
date Sat, 16 Jan 2021 19:47:22 +0000
parents 57ee26681561
children
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1 local stanza = require"util.stanza".stanza;
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2 local tostring, tonumber = tostring, tonumber;
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3 local type = type;
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4 local pairs = pairs;
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5
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6 local xmlns_rsm = 'http://jabber.org/protocol/rsm';
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7
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8 local element_parsers = {};
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9
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10 do
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11 local parsers = element_parsers;
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12 local function xs_int(st)
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13 return tonumber((st:get_text()));
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14 end
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15 local function xs_string(st)
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16 return st:get_text();
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17 end
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18
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19 parsers.after = xs_string;
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20 parsers.before = function(st)
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21 local text = st:get_text();
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22 return text == "" or text;
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23 end;
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24 parsers.max = xs_int;
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25 parsers.index = xs_int;
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26
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27 parsers.first = function(st)
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28 return { index = tonumber(st.attr.index); st:get_text() };
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29 end;
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30 parsers.last = xs_string;
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31 parsers.count = xs_int;
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32 end
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33
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34 local element_generators = setmetatable({
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35 first = function(st, data)
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36 if type(data) == "table" then
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37 st:tag("first", { index = data.index }):text(data[1]):up();
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38 else
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39 st:tag("first"):text(tostring(data)):up();
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40 end
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41 end;
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42 before = function(st, data)
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43 if data == true then
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44 st:tag("before"):up();
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45 else
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46 st:tag("before"):text(tostring(data)):up();
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47 end
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48 end
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49 }, {
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50 __index = function(_, name)
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51 return function(st, data)
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52 st:tag(name):text(tostring(data)):up();
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53 end
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54 end;
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55 });
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56
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57
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58 local function parse(set)
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59 local rs = {};
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60 for tag in set:childtags() do
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61 local name = tag.name;
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62 local parser = name and element_parsers[name];
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63 if parser then
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64 rs[name] = parser(tag);
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65 end
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66 end
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67 return rs;
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68 end
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70 local function generate(t)
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71 local st = stanza("set", { xmlns = xmlns_rsm });
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72 for k,v in pairs(t) do
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73 if element_parsers[k] then
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74 element_generators[k](st, v);
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75 end
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76 end
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77 return st;
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78 end
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79
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80 local function get(st)
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81 local set = st:get_child("set", xmlns_rsm);
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82 if set and #set.tags > 0 then
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83 return parse(set);
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84 end
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85 end
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86
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87 return { parse = parse, generate = generate, get = get };