annotate mod_mam/mamprefsxml.lib.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
parents 5941aac79f06
children
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1 -- XEP-0313: Message Archive Management for Prosody
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2 -- Copyright (C) 2011-2013 Kim Alvefur
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3 --
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4 -- This file is MIT/X11 licensed.
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5
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6 local st = require"util.stanza";
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7
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8 local default_attrs = {
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9 always = true, [true] = "always",
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10 never = false, [false] = "never",
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11 roster = "roster",
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12 }
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13
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14 local function tostanza(prefs, xmlns_mam)
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15 local default = prefs[false];
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16 default = default_attrs[default];
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17 local prefstanza = st.stanza("prefs", { xmlns = xmlns_mam, default = default });
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18 local always = st.stanza("always");
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19 local never = st.stanza("never");
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20 for jid, choice in pairs(prefs) do
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21 if jid then
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22 (choice and always or never):tag("jid"):text(jid):up();
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23 end
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24 end
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25 prefstanza:add_child(always):add_child(never);
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26 return prefstanza;
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27 end
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28 local function fromstanza(prefstanza)
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29 local prefs = {};
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30 local default = prefstanza.attr.default;
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31 if default then
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32 prefs[false] = default_attrs[default];
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33 end
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34
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35 local always = prefstanza:get_child("always");
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36 if always then
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37 for rule in always:childtags("jid") do
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38 local jid = rule:get_text();
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39 prefs[jid] = true;
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40 end
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41 end
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42
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43 local never = prefstanza:get_child("never");
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44 if never then
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45 for rule in never:childtags("jid") do
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46 local jid = rule:get_text();
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47 prefs[jid] = false;
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48 end
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49 end
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50
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51 return prefs;
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52 end
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53
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54 return {
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55 tostanza = tostanza;
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56 fromstanza = fromstanza;
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57 }