Mercurial > prosody-modules

annotate mod_firewall/definitions.lib.lua @ 2512:bc7539ccbde1

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
mod_mam: Normalize whitespace
author Kim Alvefur <zash@zash.se>
date Mon, 20 Feb 2017 00:48:31 +0100
parents 5fe483b73fd2
children c6fd8975704b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2079
edec9de0220a mod_firewall: Silence warnings about unused arguments [luacheck]
Kim Alvefur <zash@zash.se>
parents: 1863
diff changeset
1
edec9de0220a mod_firewall: Silence warnings about unused arguments [luacheck]
Kim Alvefur <zash@zash.se>
parents: 1863
diff changeset
2 -- Name arguments are unused here
edec9de0220a mod_firewall: Silence warnings about unused arguments [luacheck]
Kim Alvefur <zash@zash.se>
parents: 1863
diff changeset
3 -- luacheck: ignore 212
999
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with %
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
4
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with %
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
5 local definition_handlers = {};
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with %
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
6
1863
92602cfac751 mod_firewall: Fix missing import of util.set (used to be global)
Kim Alvefur <zash@zash.se>
parents: 999
diff changeset
7 local set = require"util.set";
999
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with %
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
8 local new_throttle = require "util.throttle".create;
2128
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
9
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
10 local multirate_cache_size = module:get_option_number("firewall_multirate_cache_limit", 1000);
999
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with %
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
11
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with %
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
12 function definition_handlers.ZONE(zone_name, zone_members)
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with %
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
13 local zone_member_list = {};
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with %
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
14 for member in zone_members:gmatch("[^, ]+") do
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with %
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
15 zone_member_list[#zone_member_list+1] = member;
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with %
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
16 end
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with %
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
17 return set.new(zone_member_list)._items;
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with %
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
18 end
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with %
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
19
2128
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
20 -- Helper function used by RATE handler
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
21 local function evict_only_unthrottled(name, throttle)
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
22 throttle:update();
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
23 -- Check whether the throttle is at max balance (i.e. totally safe to forget about it)
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
24 if throttle.balance < throttle.max then
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
25 -- Not safe to forget
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
26 return false;
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
27 end
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
28 end
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
29
999
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with %
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
30 function definition_handlers.RATE(name, line)
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with %
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
31 local rate = assert(tonumber(line:match("([%d.]+)")), "Unable to parse rate");
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with %
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
32 local burst = tonumber(line:match("%(%s*burst%s+([%d.]+)%s*%)")) or 1;
2128
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
33 local max_throttles = tonumber(line:match("%(%s*entries%s+([%d]+)%s*%)")) or multirate_cache_size;
2370
5fe483b73fd2 mod_firewall: Rate limiting: Document 'entries' and add option to allow overflowing when full
Matthew Wild <mwild1@gmail.com>
parents: 2131
diff changeset
34 local deny_when_full = not line:match("%(allow overflow%)");
2128
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
35 return {
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
36 single = function ()
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
37 return new_throttle(rate*burst, burst);
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
38 end;
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
39
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
40 multi = function ()
2370
5fe483b73fd2 mod_firewall: Rate limiting: Document 'entries' and add option to allow overflowing when full
Matthew Wild <mwild1@gmail.com>
parents: 2131
diff changeset
41 local cache = require "util.cache".new(max_throttles, deny_when_full and evict_only_unthrottled or nil);
2128
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
42 return {
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
43 poll_on = function (_, key, amount)
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
44 assert(key, "no key");
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
45 local throttle = cache:get(key);
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
46 if not throttle then
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
47 throttle = new_throttle(rate*burst, burst);
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
48 if not cache:set(key, throttle) then
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
49 module:log("warn", "Multirate '%s' has hit its maximum number of active throttles (%d), denying new events", name, max_throttles);
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
50 return false;
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
51 end
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
52 end
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
53 return throttle:poll(amount);
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
54 end;
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
55 }
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
56 end;
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2079
diff changeset
57 };
999
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with %
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
58 end
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with %
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
59
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with %
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
60 return definition_handlers;
2131
ba42c8882026 mod_firewall: Fix another unprotected use of util.cache
Matthew Wild <mwild1@gmail.com>
parents: 2130
diff changeset
61