Mercurial > prosody-modules
view mod_e2e_policy/mod_e2e_policy.lua @ 4260:c539334dd01a
mod_http_oauth2: Rescope oauth client config into users' storage
This produces client_id of the form owner@host/random and prevents
clients from being deleted by registering an account with the same name
and then deleting the account, as well as having the client
automatically be deleted when the owner account is removed.
On one hand, this leaks the bare JID of the creator to users. On the
other hand, it makes it obvious who made the oauth application.
This module is experimental and only for developers, so this can be
changed if a better method comes up.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Sat, 21 Nov 2020 23:55:10 +0100 |
parents | a76c420eca61 |
children |
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local st = require "util.stanza"; local jid_bare = require "util.jid".bare; local host = module.host; local e2e_policy_chat = module:get_option_string("e2e_policy_chat", "optional"); -- possible values: none, optional and required local e2e_policy_muc = module:get_option_string("e2e_policy_muc", "optional"); -- possible values: none, optional and required local e2e_policy_whitelist = module:get_option_set("e2e_policy_whitelist", { }); -- make this module ignore messages sent to and from this JIDs or MUCs local e2e_policy_message_optional_chat = module:get_option_string("e2e_policy_message_optional_chat", "For security reasons, OMEMO, OTR or PGP encryption is STRONGLY recommended for conversations on this server."); local e2e_policy_message_required_chat = module:get_option_string("e2e_policy_message_required_chat", "For security reasons, OMEMO, OTR or PGP encryption is required for conversations on this server."); local e2e_policy_message_optional_muc = module:get_option_string("e2e_policy_message_optional_muc", "For security reasons, OMEMO, OTR or PGP encryption is STRONGLY recommended for MUC on this server."); local e2e_policy_message_required_muc = module:get_option_string("e2e_policy_message_required_muc", "For security reasons, OMEMO, OTR or PGP encryption is required for MUC on this server."); function warn_on_plaintext_messages(event) -- check if JID is whitelisted if e2e_policy_whitelist:contains(jid_bare(event.stanza.attr.from)) or e2e_policy_whitelist:contains(jid_bare(event.stanza.attr.to)) then return nil; end local body = event.stanza:get_child_text("body"); -- do not warn for status messages if not body or event.stanza.attr.type == "error" then return nil; end -- check otr if body and body:sub(1,4) == "?OTR" then return nil; end -- check omemo https://xmpp.org/extensions/inbox/omemo.html if event.stanza:get_child("encrypted", "eu.siacs.conversations.axolotl") or event.stanza:get_child("encrypted", "urn:xmpp:omemo:0") then return nil; end -- check xep27 pgp https://xmpp.org/extensions/xep-0027.html if event.stanza:get_child("x", "jabber:x:encrypted") then return nil; end -- check xep373 pgp (OX) https://xmpp.org/extensions/xep-0373.html if event.stanza:get_child("openpgp", "urn:xmpp:openpgp:0") then return nil; end -- no valid encryption found if e2e_policy_chat == "optional" and event.stanza.attr.type ~= "groupchat" then event.origin.send(st.message({ from = host, to = event.stanza.attr.from, type = "headline" }, e2e_policy_message_optional_chat)); end if e2e_policy_chat == "required" and event.stanza.attr.type ~= "groupchat" then return event.origin.send(st.error_reply(event.stanza, "modify", "policy-violation", e2e_policy_message_required_chat)); end if e2e_policy_muc == "optional" and event.stanza.attr.type == "groupchat" then event.origin.send(st.message({ from = host, to = event.stanza.attr.from, type = "headline" }, e2e_policy_message_optional_muc)); end if e2e_policy_muc == "required" and event.stanza.attr.type == "groupchat" then return event.origin.send(st.error_reply(event.stanza, "modify", "policy-violation", e2e_policy_message_required_muc)); end end module:hook("pre-message/bare", warn_on_plaintext_messages, 300); module:hook("pre-message/full", warn_on_plaintext_messages, 300); module:hook("pre-message/host", warn_on_plaintext_messages, 300);