mirror of
https://github.com/ergochat/ergo.git
synced 2024-12-27 13:12:43 +01:00
116 lines
3.0 KiB
Go
116 lines
3.0 KiB
Go
// Copyright (c) 2016-2017 Daniel Oaks <daniel@danieloaks.net>
|
|
// released under the MIT license
|
|
|
|
package irc
|
|
|
|
import (
|
|
"sync"
|
|
|
|
"github.com/goshuirc/irc-go/ircmsg"
|
|
)
|
|
|
|
// MonitorManager keeps track of who's monitoring which nicks.
|
|
type MonitorManager struct {
|
|
sync.RWMutex // tier 2
|
|
// client -> (casefolded nick it's watching -> uncasefolded nick)
|
|
watching map[*Session]map[string]string
|
|
// casefolded nick -> clients watching it
|
|
watchedby map[string]map[*Session]empty
|
|
}
|
|
|
|
func (mm *MonitorManager) Initialize() {
|
|
mm.watching = make(map[*Session]map[string]string)
|
|
mm.watchedby = make(map[string]map[*Session]empty)
|
|
}
|
|
|
|
// AlertAbout alerts everyone monitoring `client`'s nick that `client` is now {on,off}line.
|
|
func (manager *MonitorManager) AlertAbout(nick, cfnick string, online bool) {
|
|
var watchers []*Session
|
|
// safely copy the list of clients watching our nick
|
|
manager.RLock()
|
|
for session := range manager.watchedby[cfnick] {
|
|
watchers = append(watchers, session)
|
|
}
|
|
manager.RUnlock()
|
|
|
|
command := RPL_MONOFFLINE
|
|
if online {
|
|
command = RPL_MONONLINE
|
|
}
|
|
|
|
for _, session := range watchers {
|
|
session.Send(nil, session.client.server.name, command, session.client.Nick(), nick)
|
|
}
|
|
}
|
|
|
|
// Add registers `client` to receive notifications about `nick`.
|
|
func (manager *MonitorManager) Add(session *Session, nick string, limit int) error {
|
|
cfnick, err := CasefoldName(nick)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
manager.Lock()
|
|
defer manager.Unlock()
|
|
|
|
if manager.watching[session] == nil {
|
|
manager.watching[session] = make(map[string]string)
|
|
}
|
|
if manager.watchedby[cfnick] == nil {
|
|
manager.watchedby[cfnick] = make(map[*Session]empty)
|
|
}
|
|
|
|
if len(manager.watching[session]) >= limit {
|
|
return errMonitorLimitExceeded
|
|
}
|
|
|
|
manager.watching[session][cfnick] = nick
|
|
manager.watchedby[cfnick][session] = empty{}
|
|
return nil
|
|
}
|
|
|
|
// Remove unregisters `client` from receiving notifications about `nick`.
|
|
func (manager *MonitorManager) Remove(session *Session, nick string) (err error) {
|
|
cfnick, err := CasefoldName(nick)
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
manager.Lock()
|
|
defer manager.Unlock()
|
|
delete(manager.watching[session], cfnick)
|
|
delete(manager.watchedby[cfnick], session)
|
|
return nil
|
|
}
|
|
|
|
// RemoveAll unregisters `client` from receiving notifications about *all* nicks.
|
|
func (manager *MonitorManager) RemoveAll(session *Session) {
|
|
manager.Lock()
|
|
defer manager.Unlock()
|
|
|
|
for cfnick := range manager.watching[session] {
|
|
delete(manager.watchedby[cfnick], session)
|
|
}
|
|
delete(manager.watching, session)
|
|
}
|
|
|
|
// List lists all nicks that `client` is registered to receive notifications about.
|
|
func (manager *MonitorManager) List(session *Session) (nicks []string) {
|
|
manager.RLock()
|
|
defer manager.RUnlock()
|
|
for _, nick := range manager.watching[session] {
|
|
nicks = append(nicks, nick)
|
|
}
|
|
return nicks
|
|
}
|
|
|
|
var (
|
|
monitorSubcommands = map[string]func(server *Server, client *Client, msg ircmsg.IrcMessage, rb *ResponseBuffer) bool{
|
|
"-": monitorRemoveHandler,
|
|
"+": monitorAddHandler,
|
|
"c": monitorClearHandler,
|
|
"l": monitorListHandler,
|
|
"s": monitorStatusHandler,
|
|
}
|
|
)
|