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chat/internal/db/schema/001_initial.sql
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feat: implement Tier 2 channel modes (+b/+i/+s/+k/+l)
Implement the second tier of IRC channel features:

1. Ban system (+b): Add/remove/list bans with wildcard matching.
   Bans prevent both joining and sending messages.
   Schema: channel_bans table with mask, set_by, created_at.

2. Invite-only (+i): Channel mode requiring invitation to join.
   INVITE command for operators. Invites stored in DB and
   cleared after successful JOIN.

3. Secret (+s): Hides channel from LIST for non-members and
   from WHOIS channel lists when querier is not in same channel.

4. Channel key (+k): Password-protected channels. Key required
   on JOIN, set/cleared by operators.

5. User limit (+l): Maximum member count enforcement. Rejects
   JOIN when channel is at capacity.

Updated ISUPPORT CHANMODES to b,k,Hl,imnst.
Updated RPL_MYINFO available modes to ikmnostl.
Comprehensive tests for all features at both DB and handler levels.
README updated with full documentation of all new modes.

closes #86
2026-03-24 18:32:52 -07:00

118 lines
4.6 KiB
SQL

-- Chat server schema (pre-1.0 consolidated)
PRAGMA foreign_keys = ON;
-- Sessions: each session is a user identity (nick + optional password + signing key)
CREATE TABLE IF NOT EXISTS sessions (
id INTEGER PRIMARY KEY AUTOINCREMENT,
uuid TEXT NOT NULL UNIQUE,
nick TEXT NOT NULL UNIQUE,
username TEXT NOT NULL DEFAULT '',
hostname TEXT NOT NULL DEFAULT '',
ip TEXT NOT NULL DEFAULT '',
is_oper INTEGER NOT NULL DEFAULT 0,
password_hash TEXT NOT NULL DEFAULT '',
signing_key TEXT NOT NULL DEFAULT '',
away_message TEXT NOT NULL DEFAULT '',
created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
last_seen DATETIME DEFAULT CURRENT_TIMESTAMP
);
CREATE INDEX IF NOT EXISTS idx_sessions_uuid ON sessions(uuid);
-- Clients: each session can have multiple connected clients
CREATE TABLE IF NOT EXISTS clients (
id INTEGER PRIMARY KEY AUTOINCREMENT,
uuid TEXT NOT NULL UNIQUE,
session_id INTEGER NOT NULL REFERENCES sessions(id) ON DELETE CASCADE,
token TEXT NOT NULL UNIQUE,
ip TEXT NOT NULL DEFAULT '',
hostname TEXT NOT NULL DEFAULT '',
created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
last_seen DATETIME DEFAULT CURRENT_TIMESTAMP
);
CREATE INDEX IF NOT EXISTS idx_clients_token ON clients(token);
CREATE INDEX IF NOT EXISTS idx_clients_session ON clients(session_id);
-- Channels
CREATE TABLE IF NOT EXISTS channels (
id INTEGER PRIMARY KEY AUTOINCREMENT,
name TEXT NOT NULL UNIQUE,
topic TEXT NOT NULL DEFAULT '',
topic_set_by TEXT NOT NULL DEFAULT '',
topic_set_at DATETIME,
hashcash_bits INTEGER NOT NULL DEFAULT 0,
is_moderated INTEGER NOT NULL DEFAULT 0,
is_topic_locked INTEGER NOT NULL DEFAULT 1,
is_invite_only INTEGER NOT NULL DEFAULT 0,
is_secret INTEGER NOT NULL DEFAULT 0,
channel_key TEXT NOT NULL DEFAULT '',
user_limit INTEGER NOT NULL DEFAULT 0,
created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
updated_at DATETIME DEFAULT CURRENT_TIMESTAMP
);
-- Channel bans
CREATE TABLE IF NOT EXISTS channel_bans (
id INTEGER PRIMARY KEY AUTOINCREMENT,
channel_id INTEGER NOT NULL REFERENCES channels(id) ON DELETE CASCADE,
mask TEXT NOT NULL,
set_by TEXT NOT NULL,
created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
UNIQUE(channel_id, mask)
);
CREATE INDEX IF NOT EXISTS idx_channel_bans_channel ON channel_bans(channel_id);
-- Channel invites (in-memory would be simpler but DB survives restarts)
CREATE TABLE IF NOT EXISTS channel_invites (
id INTEGER PRIMARY KEY AUTOINCREMENT,
channel_id INTEGER NOT NULL REFERENCES channels(id) ON DELETE CASCADE,
session_id INTEGER NOT NULL REFERENCES sessions(id) ON DELETE CASCADE,
invited_by TEXT NOT NULL DEFAULT '',
created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
UNIQUE(channel_id, session_id)
);
CREATE INDEX IF NOT EXISTS idx_channel_invites_channel ON channel_invites(channel_id);
-- Channel members
CREATE TABLE IF NOT EXISTS channel_members (
id INTEGER PRIMARY KEY AUTOINCREMENT,
channel_id INTEGER NOT NULL REFERENCES channels(id) ON DELETE CASCADE,
session_id INTEGER NOT NULL REFERENCES sessions(id) ON DELETE CASCADE,
is_operator INTEGER NOT NULL DEFAULT 0,
is_voiced INTEGER NOT NULL DEFAULT 0,
joined_at DATETIME DEFAULT CURRENT_TIMESTAMP,
UNIQUE(channel_id, session_id)
);
-- Messages: IRC envelope format
CREATE TABLE IF NOT EXISTS messages (
id INTEGER PRIMARY KEY AUTOINCREMENT,
uuid TEXT NOT NULL UNIQUE,
command TEXT NOT NULL DEFAULT 'PRIVMSG',
msg_from TEXT NOT NULL DEFAULT '',
msg_to TEXT NOT NULL DEFAULT '',
params TEXT NOT NULL DEFAULT '[]',
body TEXT NOT NULL DEFAULT '[]',
meta TEXT NOT NULL DEFAULT '{}',
created_at DATETIME DEFAULT CURRENT_TIMESTAMP
);
CREATE INDEX IF NOT EXISTS idx_messages_to_id ON messages(msg_to, id);
CREATE INDEX IF NOT EXISTS idx_messages_created ON messages(created_at);
-- Spent hashcash tokens for replay prevention (1-year TTL)
CREATE TABLE IF NOT EXISTS spent_hashcash (
id INTEGER PRIMARY KEY AUTOINCREMENT,
stamp_hash TEXT NOT NULL UNIQUE,
created_at DATETIME DEFAULT CURRENT_TIMESTAMP
);
CREATE INDEX IF NOT EXISTS idx_spent_hashcash_created ON spent_hashcash(created_at);
-- Per-client message queues for fan-out delivery
CREATE TABLE IF NOT EXISTS client_queues (
id INTEGER PRIMARY KEY AUTOINCREMENT,
client_id INTEGER NOT NULL REFERENCES clients(id) ON DELETE CASCADE,
message_id INTEGER NOT NULL REFERENCES messages(id) ON DELETE CASCADE,
created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
UNIQUE(client_id, message_id)
);
CREATE INDEX IF NOT EXISTS idx_client_queues_client ON client_queues(client_id, id);