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fix a fairly bad bug where nicks could get out of sync

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during nick change, removeInternal(client) was being called even before checking
whether the new nick was in use or reserved. Reproduction steps:

1. Log in a client 'alice'
2. Log in a client 'bob'
3. bob issues /nick alice, which fails (correctly) with:
:oragono.test 433 bob alice :Nickname is already in use
4. alice issues /msg bob hi, which fails (incorrectly) with:
:oragono.test 401 alice bob :No such nick
This commit is contained in:
Shivaram Lingamneni 2019-01-01 21:16:29 -05:00
parent 9a2117f75d
commit d0ded906d4
1 changed files with 1 additions and 1 deletions
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2
irc/client_lookup_set.go
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@ -129,7 +129,6 @@ func (clients *ClientManager) SetNick(client *Client, newNick string) error {
clients.Lock()
defer clients.Unlock()
clients.removeInternal(client)
currentNewEntry := clients.byNick[newcfnick]
// the client may just be changing case
if currentNewEntry != nil && currentNewEntry != client {
@ -138,6 +137,7 @@ func (clients *ClientManager) SetNick(client *Client, newNick string) error {
if method == NickReservationStrict && reservedAccount != client.Account() {
return errNicknameReserved
}
clients.removeInternal(client)
clients.byNick[newcfnick] = client
client.updateNickMask(newNick)
return nil