annotate mod_flash_policy/mod_flash_policy.lua @ 5383:df11a2cbc7b7

mod_http_oauth2: Implement RFC 7628 Proof Key for Code Exchange Likely to become mandatory in OAuth 2.1. Backwards compatible since the default 'plain' verifier would compare nil with nil if the relevant parameters are left out.
author Kim Alvefur <zash@zash.se>
date Sat, 29 Apr 2023 13:09:46 +0200
parents 7dbde05b48a9
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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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12
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13 module:log("debug", "crossdomain string: "..string);
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14
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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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26
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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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34
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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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38
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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