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- // Copyright (c) 2012-2014 Jeremy Latt
- // Copyright (c) 2016-2017 Daniel Oaks <daniel@danieloaks.net>
- // released under the MIT license
-
- package irc
-
- import (
- "fmt"
- "strings"
-
- "github.com/goshuirc/irc-go/ircmsg"
- )
-
- var (
- restrictedNicknames = map[string]bool{
- "=scene=": true, // used for rp commands
- "chanserv": true,
- "nickserv": true,
- }
- )
-
- // NICK <nickname>
- func nickHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
- if !client.authorized {
- client.Quit("Bad password")
- return true
- }
-
- nicknameRaw := strings.TrimSpace(msg.Params[0])
- nickname, err := CasefoldName(nicknameRaw)
-
- if len(nicknameRaw) < 1 {
- client.Send(nil, server.name, ERR_NONICKNAMEGIVEN, client.nick, "No nickname given")
- return false
- }
-
- if err != nil || len(nicknameRaw) > server.limits.NickLen || restrictedNicknames[nickname] {
- client.Send(nil, server.name, ERR_ERRONEUSNICKNAME, client.nick, nicknameRaw, "Erroneous nickname")
- return false
- }
-
- if client.nick == nickname {
- return false
- }
-
- // bleh, this will be replaced and done below
- if client.registered {
- err = client.ChangeNickname(nicknameRaw)
- } else {
- err = client.SetNickname(nicknameRaw)
- }
- if err == ErrNicknameInUse {
- client.Send(nil, server.name, ERR_NICKNAMEINUSE, client.nick, nicknameRaw, "Nickname is already in use")
- return false
- } else if err != nil {
- client.Send(nil, server.name, ERR_UNKNOWNERROR, client.nick, "NICK", fmt.Sprintf("Could not set or change nickname: %s", err.Error()))
- return false
- }
- if client.registered {
- client.alertMonitors()
- }
- server.tryRegister(client)
- return false
- }
-
- // SANICK <oldnick> <nickname>
- func sanickHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
- if !client.authorized {
- client.Quit("Bad password")
- return true
- }
-
- oldnick, oerr := CasefoldName(msg.Params[0])
- nickname, err := CasefoldName(msg.Params[1])
-
- if len(nickname) < 1 {
- client.Send(nil, server.name, ERR_NONICKNAMEGIVEN, client.nick, "No nickname given")
- return false
- }
-
- if oerr != nil || err != nil || len(strings.TrimSpace(msg.Params[1])) > server.limits.NickLen || restrictedNicknames[nickname] {
- client.Send(nil, server.name, ERR_ERRONEUSNICKNAME, client.nick, msg.Params[0], "Erroneous nickname")
- return false
- }
-
- if client.nick == msg.Params[1] {
- return false
- }
-
- target := server.clients.Get(oldnick)
- if target == nil {
- client.Send(nil, server.name, ERR_NOSUCHNICK, msg.Params[0], "No such nick")
- return false
- }
-
- //TODO(dan): There's probably some races here, we should be changing this in the primary server thread
- if server.clients.Get(nickname) != nil && server.clients.Get(nickname) != target {
- client.Send(nil, server.name, ERR_NICKNAMEINUSE, client.nick, msg.Params[0], "Nickname is already in use")
- return false
- }
-
- target.ChangeNickname(msg.Params[1])
- return false
- }
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