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fix double-destroy bug

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This commit is contained in:
Shivaram Lingamneni 2019-05-27 05:52:40 -04:00
parent 74732c4aeb
commit 1a7169d75d
1 changed files with 9 additions and 3 deletions
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12
irc/client.go
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@ -53,6 +53,7 @@ type Client struct {
certfp string
channels ChannelSet
ctime time.Time
destroyed bool
exitedSnomaskSent bool
flags modes.ModeSet
hostname string
@ -962,7 +963,6 @@ func (client *Client) Quit(message string, session *Session) {
func (client *Client) destroy(session *Session) {
var sessionsToDestroy []*Session
// allow destroy() to execute at most once
client.stateMutex.Lock()
details := client.detailsNoMutex()
brbState := client.brbTimer.state
@ -980,6 +980,13 @@ func (client *Client) destroy(session *Session) {
sessionsToDestroy = []*Session{session}
}
}
// should we destroy the whole client this time?
shouldDestroy := !client.destroyed && remainingSessions == 0 && (brbState != BrbEnabled && brbState != BrbSticky)
if shouldDestroy {
// if it's our job to destroy it, don't let anyone else try
client.destroyed = true
}
client.stateMutex.Unlock()
// destroy all applicable sessions:
@ -1013,8 +1020,7 @@ func (client *Client) destroy(session *Session) {
}
// do not destroy the client if it has either remaining sessions, or is BRB'ed
if remainingSessions != 0 || brbState == BrbEnabled || brbState == BrbSticky {
client.server.logger.Debug("quit", fmt.Sprintf("preserving client %s with %d remaining sessions\n", details.nick, remainingSessions))
if !shouldDestroy {
return
}