Mercurial > prosody-modules

annotate mod_muc_dicebot/mod_muc_dicebot.lua @ 5616:59d5fc50f602

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mod_http_oauth2: Implement refresh token rotation Makes refresh tokens one-time-use, handing out a new refresh token with each access token. Thus if a refresh token is stolen and used by an attacker, the next time the legitimate client tries to use the previous refresh token, it will not work and the attack will be noticed. If the attacker does not use the refresh token, it becomes invalid after the legitimate client uses it. This behavior is recommended by draft-ietf-oauth-security-topics
author Kim Alvefur <zash@zash.se>
date Sun, 23 Jul 2023 02:56:08 +0200
parents 785389a2d2b3
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
4579
b305814bd930 mod_muc_dicebot: A thing to roll dice
Jonas Schäfer <jonas@wielicki.name>
parents:
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1 local muc = module:depends("muc");
b305814bd930 mod_muc_dicebot: A thing to roll dice
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2 local rand = require"util.random";
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3
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4 local s_match = string.match;
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5 local s_gmatch = string.gmatch;
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6 local t_insert = table.insert;
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7 local t_concat = table.concat;
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8
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9 local rooms = module:get_option_set("muc_dicebot_rooms", nil);
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10 local xmlns_nick = "http://jabber.org/protocol/nick";
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11
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12 local function is_room_affected(roomjid)
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13 return not rooms or rooms:contains(roomjid)
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14 end
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15
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16 local function roll(sides)
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17 if sides > 256 then
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18 return nil, "too many sides"
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19 end
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20 local factor = math.floor(256 / sides);
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21 local cutoff = sides * factor;
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22 module:log("error", "%d -> %d %d %d", sides, max, factor, cutoff);
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23 for i=1,10 do
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24 local randomness = string.byte(rand.bytes(1), 1);
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25 module:log("error", "%d", randomness);
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26 if randomness < cutoff then
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27 return (randomness % sides) + 1
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28 end
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29 end
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30 return nil, "failed to find valid number"
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31 end
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32
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33 local function muc_broadcast_message(event)
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34 if not is_room_affected(event.room.jid) then
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35 return
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36 end
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37
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38 local stanza = event.stanza;
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39 local body = stanza:get_child("body");
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40 if not body then
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41 return
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42 end
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43
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44 local text = body:get_text();
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45 module:log("error", "%q %q %q", stanza, body, text);
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46 local dice = s_match(text, "^[%.!]r%s(.+)$");
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47 if not dice or dice == "" then
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48 return
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49 end
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50
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51 local results = {};
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52 local count = 0;
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53 local sum = 0;
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54 for ndice, sep, sides in s_gmatch(dice, "(%d*)([wd]?)(%d+)") do
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55 if not sep or sep == "" then
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56 sides = ndice .. sides
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57 ndice = "1"
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58 end
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59 local ndice = tonumber(ndice);
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60 count = count + ndice;
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61 if count > 100 then
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62 return true
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63 end
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64 local sides = tonumber(sides);
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65 for i=1,ndice do
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66 local value = roll(sides);
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67 t_insert(results, tostring(value));
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68 sum = sum + value;
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69 end
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70 end
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71 body:text("\n⇒ "..t_concat(results, " ").." (sum: "..sum..")");
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72 end
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73
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74 module:hook("muc-broadcast-message", muc_broadcast_message);