prosody-modules
8231774f5bfd
mod_host_blacklist/mod_host_blacklist.lua

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mod_host_blacklist/mod_host_blacklist.lua @ 4651:8231774f5bfd

mod_cloud_notify_encrypted: Ensure body substring remains valid UTF-8 The `body:sub()` call risks splitting the string in the middle of a multi-byte UTF-8 sequence. This should have been caught by util.stanza validation, but that would have caused some havoc, at the very least causing the notification to not be sent. There have been no reports of this happening. Likely because this module isn't widely deployed among users with languages that use many longer UTF-8 sequences. The util.encodings.utf8.valid() function is O(n) where only the last sequence really needs to be checked, but it's in C and expected to be fast.
author Kim Alvefur <zash@zash.se>
date Sun, 22 Aug 2021 13:22:59 +0200
parent 1182:547b3c05cc06
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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513aa2e0c045 mod_host_blacklist: Similar to mod_s2s_blacklist, but stanza-based. Works between hosts on the same server, at a slight performance impact.
Matthew Wild <mwild1@gmail.com>
parents:
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1 local jid_split = require "util.jid".split;
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parents:
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2 local st = require "util.stanza";
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Matthew Wild <mwild1@gmail.com>
parents:
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3 local set = require "util.set";
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parents:
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4 local select = select;
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parents:
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513aa2e0c045 mod_host_blacklist: Similar to mod_s2s_blacklist, but stanza-based. Works between hosts on the same server, at a slight performance impact.
Matthew Wild <mwild1@gmail.com>
parents:
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6 local blacklist = module:get_option_inherited_set("host_blacklist", {});
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parents:
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513aa2e0c045 mod_host_blacklist: Similar to mod_s2s_blacklist, but stanza-based. Works between hosts on the same server, at a slight performance impact.
Matthew Wild <mwild1@gmail.com>
parents:
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8 local function stanza_checker(attr)
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9 return function (event)
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005b0429cf46 mod_host_blacklist: Small fix
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parents: 1180
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10 local host = select(2, jid_split(event.stanza.attr[attr]));
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11 if blacklist:contains(host) then
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12 module:send(st.error_reply(event.stanza, "cancel", "not-allowed", "Communication with this domain is restricted"));
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547b3c05cc06 mod_host_blacklist: Bigger fix: return true to block original stanza (thanks Zash)
Matthew Wild <mwild1@gmail.com>
parents: 1181
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13 return true;
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14 end
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15 end
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16 end
513aa2e0c045 mod_host_blacklist: Similar to mod_s2s_blacklist, but stanza-based. Works between hosts on the same server, at a slight performance impact.
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parents:
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513aa2e0c045 mod_host_blacklist: Similar to mod_s2s_blacklist, but stanza-based. Works between hosts on the same server, at a slight performance impact.
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parents:
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18 check_incoming_stanza = stanza_checker("from");
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19 check_outgoing_stanza = stanza_checker("to");
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parents:
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513aa2e0c045 mod_host_blacklist: Similar to mod_s2s_blacklist, but stanza-based. Works between hosts on the same server, at a slight performance impact.
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21 for stanza_type in set.new{"presence","message","iq"}:items() do
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22 for jid_type in set.new{"bare", "full", "host"}:items() do
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Matthew Wild <mwild1@gmail.com>
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23 module:hook("pre-"..stanza_type.."/"..jid_type, check_outgoing_stanza, 500);
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24 module:hook(stanza_type.."/"..jid_type, check_incoming_stanza, 500);
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parents:
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25 end
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parents:
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26 end