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annotate mod_readonly/mod_readonly.lua @ 750:8133dd5f266a

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mod_readonly: Allow preventing direct modification of certain user data via XMPP
author Matthew Wild <mwild1@gmail.com>
date Fri, 27 Jul 2012 02:38:43 +0100
parents
children 7776c9dc5f37
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750
8133dd5f266a mod_readonly: Allow preventing direct modification of certain user data via XMPP
Matthew Wild <mwild1@gmail.com>
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1 local st = require "util.stanza";
8133dd5f266a mod_readonly: Allow preventing direct modification of certain user data via XMPP
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2
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3 local stores = module:get_option("readonly_stores", {
8133dd5f266a mod_readonly: Allow preventing direct modification of certain user data via XMPP
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4 vcard = { "vcard-temp", "vCard" };
8133dd5f266a mod_readonly: Allow preventing direct modification of certain user data via XMPP
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5 });
8133dd5f266a mod_readonly: Allow preventing direct modification of certain user data via XMPP
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6
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7 local namespaces = {};
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8 for name, namespace in pairs(stores) do
8133dd5f266a mod_readonly: Allow preventing direct modification of certain user data via XMPP
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9 namespaces[table.concat(namespace, ":")] = name;
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10 end
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11
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12 function prevent_write(event)
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13 local stanza = event.stanza;
8133dd5f266a mod_readonly: Allow preventing direct modification of certain user data via XMPP
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14 if stanza.attr.type ~= "set" then return; end
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15 local xmlns_and_tag = stanza.tags[1].attr.xmlns..":"..stanza.tags[1].name;
8133dd5f266a mod_readonly: Allow preventing direct modification of certain user data via XMPP
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16 local store_name = namespaces[xmlns_and_tag];
8133dd5f266a mod_readonly: Allow preventing direct modification of certain user data via XMPP
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17 if store_name then
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18 module:log("warn", "Preventing modification of %s store by %s", store_name, stanza.attr.from);
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19 event.origin.send(st.error_reply(stanza, "cancel", "not-allowed", store_name.." data is read-only"));
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20 return true; -- Block stanza
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21 end
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22 end
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23
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24 for namespace in pairs(namespaces) do
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25 module:hook("iq/bare/"..namespace, prevent_write, 200);
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26 end