Mercurial > prosody-modules
view mod_roster_allinall/mod_roster_allinall.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 |
parents | 3ae8c81a348b |
children |
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local rostermanager = require"core.rostermanager"; local jid_join = require"util.jid".join; local host = module.host; local sessions = prosody.hosts[host].sessions; -- Make a *one-way* subscription. User will see when contact is online, -- contact will not see when user is online. local function subscribe(user, contact) local user_jid, contact_jid = jid_join(user, host), jid_join(contact, host); -- Update user's roster to say subscription request is pending... rostermanager.set_contact_pending_out(user, host, contact_jid); -- Update contact's roster to say subscription request is pending... rostermanager.set_contact_pending_in(contact, host, user_jid); -- Update contact's roster to say subscription request approved... rostermanager.subscribed(contact, host, user_jid); -- Update user's roster to say subscription request approved... rostermanager.process_inbound_subscription_approval(user, host, contact_jid); -- Push updates to both rosters rostermanager.roster_push(user, host, contact_jid); rostermanager.roster_push(contact, host, user_jid); end module:hook("resource-bind", function(event) local session = event.session; local user = session.username; local user_jid = jid_join(user, host); for contact in pairs(sessions) do if contact ~= user then local contact_jid = jid_join(contact, host); if not rostermanager.is_contact_subscribed(user, host, contact_jid) then subscribe(contact, user); end if not rostermanager.is_contact_subscribed(contact, host, user_jid) then subscribe(user, contact); end end end end);