118 lines
4.1 KiB
Go
118 lines
4.1 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/history"
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"github.com/oragono/oragono/irc/sno"
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"github.com/oragono/oragono/irc/utils"
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)
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var (
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restrictedNicknames = []string{
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"=scene=", // used for rp commands
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"HistServ", // used to play back JOIN, PART, etc. to legacy clients
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}
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restrictedCasefoldedNicks = make(map[string]bool)
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restrictedSkeletons = make(map[string]bool)
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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, session *Session, newnick string, rb *ResponseBuffer) bool {
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nickname := strings.TrimSpace(newnick)
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currentNick := client.Nick()
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if len(nickname) < 1 {
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rb.Add(nil, server.name, ERR_NONICKNAMEGIVEN, currentNick, client.t("No nickname given"))
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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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details := target.Details()
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assignedNickname, err := client.server.clients.SetNick(target, session, nickname)
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if err == errNicknameInUse {
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rb.Add(nil, server.name, ERR_NICKNAMEINUSE, currentNick, nickname, client.t("Nickname is already in use"))
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} else if err == errNicknameReserved {
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rb.Add(nil, server.name, ERR_NICKNAMEINUSE, currentNick, nickname, client.t("Nickname is reserved by a different account"))
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} else if err == errNicknameInvalid {
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rb.Add(nil, server.name, ERR_ERRONEUSNICKNAME, currentNick, utils.SafeErrorParam(nickname), client.t("Erroneous nickname"))
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} else if err == errCantChangeNick {
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rb.Add(nil, server.name, ERR_NICKNAMEINUSE, currentNick, utils.SafeErrorParam(nickname), client.t(err.Error()))
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} else if err != nil {
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rb.Add(nil, server.name, ERR_UNKNOWNERROR, currentNick, "NICK", fmt.Sprintf(client.t("Could not set or change nickname: %s"), err.Error()))
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}
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if err != nil {
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return false
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}
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message := utils.MakeMessage("")
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histItem := history.Item{
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Type: history.Nick,
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Nick: origNickMask,
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AccountName: details.accountName,
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Message: message,
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}
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histItem.Params[0] = assignedNickname
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client.server.logger.Debug("nick", fmt.Sprintf("%s changed nickname to %s [%s]", origNickMask, assignedNickname, client.NickCasefolded()))
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if hadNick {
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if client == target {
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target.server.snomasks.Send(sno.LocalNicks, fmt.Sprintf(ircfmt.Unescape("$%s$r changed nickname to %s"), details.nick, assignedNickname))
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} else {
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target.server.snomasks.Send(sno.LocalNicks, fmt.Sprintf(ircfmt.Unescape("Operator %s changed nickname of $%s$r to %s"), client.Nick(), details.nick, assignedNickname))
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}
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target.server.whoWas.Append(details.WhoWas)
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rb.AddFromClient(message.Time, message.Msgid, origNickMask, details.accountName, nil, "NICK", assignedNickname)
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for session := range target.Friends() {
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if session != rb.session {
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session.sendFromClientInternal(false, message.Time, message.Msgid, origNickMask, details.accountName, nil, "NICK", assignedNickname)
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}
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}
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}
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for _, channel := range client.Channels() {
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channel.AddHistoryItem(histItem)
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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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target.nickTimer.Touch(rb)
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} // else: these will be deferred to the end of registration (see #572)
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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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sessions := client.Sessions()
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if len(sessions) == 0 {
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return
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}
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// XXX arbitrarily pick the first session to receive error messages;
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// all other sessions receive a `NICK` line same as a friend would
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rb := NewResponseBuffer(sessions[0])
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performNickChange(server, client, client, nil, 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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