prosody-modules
ca856a892719
mod_require_otr/mod_require_otr.lua

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mod_require_otr/mod_require_otr.lua @ 3243:ca856a892719

mod_pubsub_text_interface: A chat interface to PubSub This module lets you manage subscriptions to pubsub nodes via simple chat messages. Subscriptions are always added based on bare JID. The include_body flag is enabled so that a plain text body version of events can be included, where supported.
author Kim Alvefur <zash@zash.se>
date Mon, 20 Aug 2018 17:09:20 +0200
parent 1295:dfe1818962f5
line wrap: on
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local st = require "util.stanza";
local block_groupchat = module:get_option_boolean("otr_block_groupchat", false);

function reject_plaintext_messages(event)
    local body = event.stanza:get_child_text("body");
    if body and body:sub(1,4) ~= "?OTR" or (not block_groupchat and event.stanza.attr.type == "groupchat") then
        return event.origin.send(st.error_reply(event.stanza, "modify", "policy-violation", "OTR encryption is required for conversations on this server"));
    end
end

module:hook("pre-message/bare", reject_plaintext_messages, 300);
module:hook("pre-message/full", reject_plaintext_messages, 300);
module:hook("pre-message/host", reject_plaintext_messages, 300);