prosody-modules
5aee8d86629a
mod_password_policy/mod_password_policy.lua

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mod_password_policy/mod_password_policy.lua @ 4738:5aee8d86629a

mod_bookmarks2: Fix handling of nick and password elements This form of child retrieval fails when the stanza elements internally don't have an 'xmlns' attribute, which can happen sometimes for some reason, including when they have been constructed via the stanza builder API. When that is the case then the explicit namespace arguemnt does not match the nil value of the internal attribute. Calling `:get_child()` without the namespace argument does the right thing here, with both nil and the parent namespace as valid values for the internal attribute.
author Kim Alvefur <zash@zash.se>
date Wed, 03 Nov 2021 21:11:55 +0100
parent 3351:662f2722f745
child 4828:56eba4bca28f
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1 -- Password policy enforcement for Prosody
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2 --
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3 -- Copyright (C) 2012 Waqas Hussain
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4 --
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5 --
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6 -- Configuration:
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7 -- password_policy = {
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8 -- length = 8;
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9 -- }
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10
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11
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12 local options = module:get_option("password_policy");
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13
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14 options = options or {};
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15 options.length = options.length or 8;
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16
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17 local st = require "util.stanza";
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18
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19 function check_password(password)
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20 if #password < options.length then
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21 return nil, ("Password is too short (minimum %d characters)"):format(options.length);
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22 end
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23 return true;
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24 end
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25
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26 function get_policy()
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27 return options;
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28 end
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29
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30 function handler(event)
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31 local origin, stanza = event.origin, event.stanza;
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32
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33 if stanza.attr.type == "set" then
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34 local query = stanza.tags[1];
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35
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36 local passwords = {};
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37
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38 local dataform = query:get_child("x", "jabber:x:data");
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39 if dataform then
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40 for _,tag in ipairs(dataform.tags) do
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41 if tag.attr.var == "password" then
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42 table.insert(passwords, tag:get_child_text("value"));
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43 end
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44 end
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45 end
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46
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47 table.insert(passwords, query:get_child_text("password"));
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48
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49 for _,password in ipairs(passwords) do
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50 if password and not check_password(password) then
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51 origin.send(st.error_reply(stanza, "cancel", "not-acceptable", "Please use a longer password."));
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52 return true;
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53 end
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54 end
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55 end
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56 end
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57
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58 module:hook("iq/self/jabber:iq:register:query", handler, 10);
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59 module:hook("iq/host/jabber:iq:register:query", handler, 10);
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60 module:hook("stanza/iq/jabber:iq:register:query", handler, 10);