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fix #749

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This commit is contained in:
Shivaram Lingamneni 2020-03-16 07:54:50 -04:00
parent ee63cd135b
commit 26fd3e69a8
11 changed files with 208 additions and 95 deletions
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75
irc/client_lookup_set.go
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@ -116,23 +116,9 @@ func (clients *ClientManager) Resume(oldClient *Client, session *Session) (err e
// SetNick sets a client's nickname, validating it against nicknames in use
func (clients *ClientManager) SetNick(client *Client, session *Session, newNick string) (setNick string, err error) {
config := client.server.Config()
newcfnick, err := CasefoldName(newNick)
if err != nil {
return "", errNicknameInvalid
}
if len(newNick) > config.Limits.NickLen || len(newcfnick) > config.Limits.NickLen {
return "", errNicknameInvalid
}
newSkeleton, err := Skeleton(newNick)
if err != nil {
return "", errNicknameInvalid
}
if restrictedCasefoldedNicks[newcfnick] || restrictedSkeletons[newSkeleton] {
return "", errNicknameInvalid
}
var newcfnick, newSkeleton string
reservedAccount, method := client.server.accounts.EnforcementStatus(newcfnick, newSkeleton)
client.stateMutex.RLock()
account := client.account
accountName := client.accountName
@ -141,19 +127,58 @@ func (clients *ClientManager) SetNick(client *Client, session *Session, newNick
realname := client.realname
client.stateMutex.RUnlock()
// recompute this (client.alwaysOn is not set for unregistered clients):
alwaysOn := account != "" && persistenceEnabled(config.Accounts.Multiclient.AlwaysOn, settings.AlwaysOn)
// recompute always-on status, because client.alwaysOn is not set for unregistered clients
var alwaysOn, useAccountName bool
if account != "" {
alwaysOn = persistenceEnabled(config.Accounts.Multiclient.AlwaysOn, settings.AlwaysOn)
useAccountName = alwaysOn || config.Accounts.NickReservation.EnforceAccountName
}
if alwaysOn && registered {
return "", errCantChangeNick
if useAccountName {
if registered && newNick != accountName && newNick != "" {
return "", errNickAccountMismatch
}
newNick = accountName
newcfnick = account
newSkeleton, err = Skeleton(newNick)
if err != nil {
return "", errNicknameInvalid
}
} else {
newNick = strings.TrimSpace(newNick)
if len(newNick) == 0 {
return "", errNickMissing
}
if account == "" && config.Accounts.NickReservation.EnforceGuestFormat {
newNick = strings.Replace(config.Accounts.NickReservation.GuestFormat, "*", newNick, 1)
}
newcfnick, err = CasefoldName(newNick)
if err != nil {
return "", errNicknameInvalid
}
if len(newNick) > config.Limits.NickLen || len(newcfnick) > config.Limits.NickLen {
return "", errNicknameInvalid
}
newSkeleton, err = Skeleton(newNick)
if err != nil {
return "", errNicknameInvalid
}
if restrictedCasefoldedNicks[newcfnick] || restrictedSkeletons[newSkeleton] {
return "", errNicknameInvalid
}
reservedAccount, method := client.server.accounts.EnforcementStatus(newcfnick, newSkeleton)
if method == NickEnforcementStrict && reservedAccount != "" && reservedAccount != account {
return "", errNicknameReserved
}
}
var bouncerAllowed bool
if config.Accounts.Multiclient.Enabled {
if alwaysOn {
// ignore the pre-reg nick, force a reattach
newNick = accountName
newcfnick = account
if useAccountName {
bouncerAllowed = true
} else {
if config.Accounts.Multiclient.AllowedByDefault && settings.AllowBouncer != MulticlientDisallowedByUser {
@ -198,9 +223,7 @@ func (clients *ClientManager) SetNick(client *Client, session *Session, newNick
if skeletonHolder != nil && skeletonHolder != client {
return "", errNicknameInUse
}
if method == NickEnforcementStrict && reservedAccount != "" && reservedAccount != account {
return "", errNicknameReserved
}
clients.removeInternal(client)
clients.byNick[newcfnick] = client
clients.bySkeleton[newSkeleton] = client