view mod_block_strangers/mod_block_strangers.lua @ 5255:001c8fdc91a4

mod_http_oauth2: Add support for the "openid" scope This "openid" scope is there to signal access to the userinfo endpoint, which is needed for OIDC support. We don't actually check this later because the userinfo endpoint only returns info embedded in the token itself, but in the future we may want to check this more carefully.
author Kim Alvefur <zash@zash.se>
date Thu, 16 Mar 2023 17:06:35 +0100
parents 38365c1f1fe4
children
line wrap: on
line source


local st = require"util.stanza";
local jid_split = require "util.jid".split;
local jid_bare = require "util.jid".bare;
local is_contact_subscribed = require "core.rostermanager".is_contact_subscribed;
local full_sessions = prosody.full_sessions;

local function has_directed_presence(user, jid)
	local session = full_sessions[user];
	if session then
		local directed = session.directed;
		if directed then
			return directed[jid];
		end
	end
end

function check_subscribed(event)
	local stanza = event.stanza;
	local to_user, to_host, to_resource = jid_split(stanza.attr.to);
	local from_jid = jid_bare(stanza.attr.from);
	if to_user and not has_directed_presence(stanza.attr.to, from_jid) and not is_contact_subscribed(to_user, to_host, from_jid) then
		-- Allow all messages from your own jid
		if from_jid == to_user.."@"..to_host then
			return nil; -- Pass through
		end
		if to_resource and stanza.attr.type == "groupchat"
		or stanza.name == "iq" and (stanza.attr.type == "result" or stanza.attr.type == "error") then
			return nil; -- Pass through
		end
		if stanza.name == "iq" and ( stanza.attr.type == "get" or stanza.attr.type == "set" ) then
			event.origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
		end
		return true; -- Drop stanza
	end
end

module:hook("message/bare", check_subscribed, 200);
module:hook("message/full", check_subscribed, 200);
module:hook("iq/full", check_subscribed, 200);