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annotate mod_strict_https/mod_strict_https.lua @ 5298:12f7d8b901e0

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mod_audit: Support for adding location (GeoIP) to audit events This can be more privacy-friendly than logging full IP addresses, and also more informative to a user - IP addresses don't mean much to the average person, however if they see activity from outside their expected country, they can immediately identify suspicious activity. As with IPs, this field is configurable for deployments that would like to disable it. Location is also not logged when the geoip library is not available.
author Matthew Wild <mwild1@gmail.com>
date Sat, 01 Apr 2023 13:11:53 +0100
parents efa9c1676d1f
children b3158647cb36
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1b34c8e46ffb mod_strict_https: New module implementing HTTP Strict Transport Security
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1 -- HTTP Strict Transport Security
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2 -- https://tools.ietf.org/html/rfc6797
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4 module:set_global();
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6 local http_server = require "net.http.server";
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7
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efa9c1676d1f mod_strict_https: Correct underscore to hypen in max-age directive
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8 local hsts_header = module:get_option_string("hsts_header", "max-age=31556952"); -- This means "Don't even try to access without HTTPS for a year"
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10 local _old_send_response;
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11 local _old_fire_event;
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12
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13 local modules = {};
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14
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15 function module.load()
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16 _old_send_response = http_server.send_response;
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17 function http_server.send_response(response, body)
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18 response.headers.strict_transport_security = hsts_header;
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19 return _old_send_response(response, body);
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20 end
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21
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22 _old_fire_event = http_server._events.fire_event;
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23 function http_server._events.fire_event(event, payload)
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24 local request = payload.request;
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25 local host = event:match("^[A-Z]+ ([^/]+)");
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26 local module = modules[host];
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27 if module and not request.secure then
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28 payload.response.headers.location = module:http_url(request.path);
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29 return 301;
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30 end
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31 return _old_fire_event(event, payload);
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32 end
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33 end
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34 function module.unload()
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35 http_server.send_response = _old_send_response;
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36 http_server._events.fire_event = _old_fire_event;
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37 end
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38 function module.add_host(module)
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39 local http_host = module:get_option_string("http_host", module.host);
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40 modules[http_host] = module;
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41 function module.unload()
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42 modules[http_host] = nil;
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43 end
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44 end