Mercurial > prosody-modules
view mod_e2e_policy/mod_e2e_policy.lua @ 5265:f845c218e52c
mod_http_oauth2: Allow revoking a token without OAuth client credentials
If you have a valid token, and you're not supposed to have it, revoking
it seems the most responsible thing to do with it, so it should be
allowed, while if you are supposed to have it, you should also be
allowed to revoke it.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Tue, 21 Mar 2023 22:02:38 +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);