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annotate mod_password_policy/mod_password_policy.lua @ 3350:cb26d04b391c

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mod_password_policy: Return error as second result explaining failure reason
author Matthew Wild <mwild1@gmail.com>
date Tue, 09 Oct 2018 14:02:42 +0100
parents 1c14edca74a4
children 662f2722f745
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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 handler(event)
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27 local origin, stanza = event.origin, event.stanza;
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28
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29 if stanza.attr.type == "set" then
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30 local query = stanza.tags[1];
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31
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32 local passwords = {};
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33
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34 local dataform = query:get_child("x", "jabber:x:data");
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35 if dataform then
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36 for _,tag in ipairs(dataform.tags) do
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37 if tag.attr.var == "password" then
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38 table.insert(passwords, tag:get_child_text("value"));
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39 end
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40 end
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41 end
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42
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43 table.insert(passwords, query:get_child_text("password"));
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44
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45 for _,password in ipairs(passwords) do
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46 if password and not check_password(password) then
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47 origin.send(st.error_reply(stanza, "cancel", "not-acceptable", "Please use a longer password."));
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48 return true;
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49 end
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50 end
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51 end
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52 end
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53
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54 module:hook("iq/self/jabber:iq:register:query", handler, 10);
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55 module:hook("iq/host/jabber:iq:register:query", handler, 10);
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56 module:hook("stanza/iq/jabber:iq:register:query", handler, 10);