wip: add namespace implementation
Don't send TAGMSG to upstreams that don't support it
TAGMSG are (in current specs and drafts from IRCv3) only used for
client tags. These are optional information by design (since they are
not distributed to all users), therefore it is preferable to discard
them accordingly to upstream, instead of waiting for all upstreams to
support the capability to advertise it.
Don't accept any IP as a proxy by default
It's too easy to setup a reverse proxy which doesn't support the PROXY
protocol, or lets the X-Forwarded-For header fields pass through.
Disable this by default.
To restore the previous behaviour, add `accept-proxy-ip localhost` to
the config file.
Switch to go-scfg
We don't use child directives yet, but likely will in the future.
Add message store abstraction
Introduce a messageStore type, which will allow for multiple
implementations (e.g. in the DB or in-memory instead of on-disk).
The message store is per-user so that we don't need to deal with locking
and it's easier to implement per-user limits.
Switch to sql.NullString
Not really better than what we had before, however new contributors will
maybe be familiar with it.
Switch DB API to user IDs
This commit changes the Network schema to use user IDs instead of
usernames. While at it, a new UNIQUE(user, name) constraint ensures
there is no conflict with custom network names.
Add id column to User table
We used rowid before, but an explicit ID column is cleaner.
Add support for the extended-join capability
This simple implementation only advertises extended-join to downstreams
when all upstreams support it.
In the future, it could be modified so that soju buffers incoming
upstream JOINs, sends a WHO, waits for the reply, and sends an extended
join to the downstream; so that soju could advertise that capability
even when some or all upstreams do not support it. This is not the case
in this commit.
Add support for the PROXY protocol
IPs whitelisted in accept-proxy-ip can now use the PROXY protocol to
indicate the original source/destination addresses.
Make DB.DeleteChannel take the channel ID
... to allow the caller to correctly do any necessary casemapping.
Make sure that WebSocket messages are valid UTF-8
... by replacing invalid bytes with the REPLACEMENT CHARACTER U+FFFD
This is better than:
- discarding the whole message, since the user would not see it...
- removing invalid bytes, since the user would not see their presence,
- converting the encoding (this is actually not possible).
Contrary to its documentation, strings.ToValidUTF8 doesn't copy the
string if it's valid UTF-8:
Don't update history when msgID is empty in appendLog
Log files don't record all message types. If the message isn't inserted
in the log file, don't update the history cursors for downstream
Fix panic in downstreamConn.sendNetworkHistory
This panic happens when sending history to a multi-upstream client.
sendNetworkHistory is called on each network, but dc.network is nil.
Fix downstream PING argument handling
The PONG message should have these arguments:
- Our server name
- The PING message's source name
Allow '/' in nickname
This allows to specify a network name in the nickname.
Nuke in-memory ring buffer
Instead, always read chat history from logs. Unify the implicit chat
history (pushing history to clients) and explicit chat history
(via the CHATHISTORY command).
Instead of keeping track of ring buffer cursors for each client, use
If necessary, the ring buffer could be re-introduced behind a
common MessageStore interface (could be useful when on-disk logs are
This loads latest messages from logs up to a given message ID. This is
similar to the IRCv3 CHATHISTORY LATEST command .