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annotate mod_flash_policy/mod_flash_policy.lua @ 4838:fd2e48d4ac94

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mod_bookmarks2: Advertise XEP-0049 support In the case mod_private isn’t loaded, some clients (like poezio) won’t even attempt to use Private XML Storage unless this feature is advertised. This is on the domain JID and not on the account JID!
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Sun, 26 Dec 2021 14:51:35 +0100
parents 7dbde05b48a9
children
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4219f69be1cf Let session.send() actually send the config string
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1 local filters = require "util.filters";
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2 local config = {}
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3 config.file = module:get_option_string("crossdomain_file", "");
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4 config.string = module:get_option_string("crossdomain_string", [[<?xml version="1.0"?><!DOCTYPE cross-domain-policy SYSTEM "/xml/dtds/cross-domain-policy.dtd"><cross-domain-policy><site-control permitted-cross-domain-policies="master-only"/><allow-access-from domain="*" /></cross-domain-policy>]]);
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5 local string = ''
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6 if not config.file ~= '' then
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7 local f = assert(io.open(config.file));
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8 string = f:read("*all");
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9 else
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10 string = config.string
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11 end
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13 module:log("debug", "crossdomain string: "..string);
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15 module:set_global();
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17 function filter_policy(data, session)
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18 -- Since we only want to check the first block of data, remove the filter
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19 filters.remove_filter(session, "bytes/in", filter_policy);
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20 if data == "<policy-file-request/>\0" then
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21 session.send(string.."\0");
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22 return nil; -- Drop data to prevent it reaching the XMPP parser
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23 else
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24 return data; -- Pass data through, it wasn't a policy request
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25 end
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27 end
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29 function filter_session(session)
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30 if session.type == "c2s_unauthed" then
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31 filters.add_filter(session, "bytes/in", filter_policy, -1);
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32 end
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33 end
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35 function module.load()
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36 filters.add_filter_hook(filter_session);
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37 end
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39 function module.unload()
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40 filters.remove_filter_hook(filter_session);
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41 end