2 goircd -- minimalistic simple Internet Relay Chat (IRC) server
3 Copyright (C) 2014-2015 Sergey Matveev <stargrave@stargrave.org>
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation, either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
45 type ClientAlivenessState struct {
50 func (client Client) String() string {
51 return client.nickname + "!" + client.username + "@" + client.conn.RemoteAddr().String()
54 func NewClient(hostname *string, conn net.Conn) *Client {
55 return &Client{hostname: hostname, conn: conn, nickname: "*", password: ""}
58 // Client processor blockingly reads everything remote client sends,
59 // splits messages by CRLF and send them to Daemon gorouting for processing
60 // it futher. Also it can signalize that client is unavailable (disconnected).
61 func (client *Client) Processor(sink chan<- ClientEvent) {
63 buf := make([]byte, 0)
64 log.Println(client, "New client")
65 sink <- ClientEvent{client, EventNew, ""}
67 bufNet = make([]byte, BufSize)
68 _, err := client.conn.Read(bufNet)
70 sink <- ClientEvent{client, EventDel, ""}
73 bufNet = bytes.TrimRight(bufNet, "\x00")
74 buf = append(buf, bufNet...)
75 if !bytes.HasSuffix(buf, []byte(CRLF)) {
78 for _, msg := range bytes.Split(buf[:len(buf)-2], []byte(CRLF)) {
80 sink <- ClientEvent{client, EventMsg, string(msg)}
87 // Send message as is with CRLF appended.
88 func (client *Client) Msg(text string) {
89 client.conn.Write([]byte(text + CRLF))
92 // Send message from server. It has ": servername" prefix.
93 func (client *Client) Reply(text string) {
94 client.Msg(":" + *client.hostname + " " + text)
97 // Send server message, concatenating all provided text parts and
98 // prefix the last one with ":".
99 func (client *Client) ReplyParts(code string, text ...string) {
100 parts := []string{code}
101 for _, t := range text {
102 parts = append(parts, t)
104 parts[len(parts)-1] = ":" + parts[len(parts)-1]
105 client.Reply(strings.Join(parts, " "))
108 // Send nicknamed server message. After servername it always has target
109 // client's nickname. The last part is prefixed with ":".
110 func (client *Client) ReplyNicknamed(code string, text ...string) {
111 client.ReplyParts(code, append([]string{client.nickname}, text...)...)
114 // Reply "461 not enough parameters" error for given command.
115 func (client *Client) ReplyNotEnoughParameters(command string) {
116 client.ReplyNicknamed("461", command, "Not enough parameters")
119 // Reply "403 no such channel" error for specified channel.
120 func (client *Client) ReplyNoChannel(channel string) {
121 client.ReplyNicknamed("403", channel, "No such channel")
124 func (client *Client) ReplyNoNickChan(channel string) {
125 client.ReplyNicknamed("401", channel, "No such nick/channel")