91 lines
2.8 KiB
Go
91 lines
2.8 KiB
Go
// Copyright (c) 2012-2014 Jeremy Latt
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// Copyright (c) 2016-2017 Daniel Oaks <daniel@danieloaks.net>
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// released under the MIT license
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package irc
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import (
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"crypto/rand"
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"encoding/hex"
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"fmt"
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"strings"
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"github.com/goshuirc/irc-go/ircfmt"
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"github.com/oragono/oragono/irc/sno"
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)
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var (
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// anything added here MUST be casefolded:
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restrictedNicknames = map[string]bool{
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"=scene=": true, // used for rp commands
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"histserv": true, // TODO(slingamn) this should become a real service
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}
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)
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// returns whether the change succeeded or failed
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func performNickChange(server *Server, client *Client, target *Client, newnick string, rb *ResponseBuffer) bool {
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nickname := strings.TrimSpace(newnick)
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cfnick, err := CasefoldName(nickname)
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if len(nickname) < 1 {
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rb.Add(nil, server.name, ERR_NONICKNAMEGIVEN, client.nick, client.t("No nickname given"))
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return false
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}
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if err != nil || len(nickname) > server.Limits().NickLen || restrictedNicknames[cfnick] {
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rb.Add(nil, server.name, ERR_ERRONEUSNICKNAME, client.nick, nickname, client.t("Erroneous nickname"))
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return false
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}
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if target.Nick() == nickname {
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return true
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}
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hadNick := target.HasNick()
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origNickMask := target.NickMaskString()
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whowas := client.WhoWas()
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err = client.server.clients.SetNick(target, nickname)
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if err == errNicknameInUse {
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rb.Add(nil, server.name, ERR_NICKNAMEINUSE, client.nick, nickname, client.t("Nickname is already in use"))
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return false
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} else if err == errNicknameReserved {
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rb.Add(nil, server.name, ERR_NICKNAMEINUSE, client.nick, nickname, client.t("Nickname is reserved by a different account"))
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return false
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} else if err != nil {
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rb.Add(nil, server.name, ERR_UNKNOWNERROR, client.nick, "NICK", fmt.Sprintf(client.t("Could not set or change nickname: %s"), err.Error()))
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return false
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}
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client.nickTimer.Touch()
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client.server.logger.Debug("nick", fmt.Sprintf("%s changed nickname to %s [%s]", origNickMask, nickname, cfnick))
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if hadNick {
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target.server.snomasks.Send(sno.LocalNicks, fmt.Sprintf(ircfmt.Unescape("$%s$r changed nickname to %s"), whowas.nick, nickname))
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target.server.whoWas.Append(whowas)
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for friend := range target.Friends() {
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friend.Send(nil, origNickMask, "NICK", nickname)
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}
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}
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if target.Registered() {
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client.server.monitorManager.AlertAbout(target, true)
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}
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// else: Run() will attempt registration immediately after this
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return true
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}
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func (server *Server) RandomlyRename(client *Client) {
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prefix := server.AccountConfig().NickReservation.RenamePrefix
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if prefix == "" {
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prefix = "Guest-"
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}
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buf := make([]byte, 8)
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rand.Read(buf)
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nick := fmt.Sprintf("%s%s", prefix, hex.EncodeToString(buf))
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rb := NewResponseBuffer(client)
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performNickChange(server, client, client, nick, rb)
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rb.Send(false)
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// technically performNickChange can fail to change the nick,
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// but if they're still delinquent, the timer will get them later
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}
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