2 goircd -- minimalistic simple Internet Relay Chat (IRC) server
3 Copyright (C) 2014 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/>.
44 type ClientAlivenessState struct {
49 func (client Client) String() string {
50 return client.nickname + "!" + client.username + "@" + client.conn.RemoteAddr().String()
53 func NewClient(hostname *string, conn net.Conn) *Client {
54 return &Client{hostname: hostname, conn: conn, nickname: "*", password: ""}
57 // Client processor blockingly reads everything remote client sends,
58 // splits messages by CRLF and send them to Daemon gorouting for processing
59 // it futher. Also it can signalize that client is unavailable (disconnected).
60 func (client *Client) Processor(sink chan<- ClientEvent) {
62 buf := make([]byte, 0)
63 log.Println(client, "New client")
64 sink <- ClientEvent{client, EventNew, ""}
66 bufNet = make([]byte, BufSize)
67 _, err := client.conn.Read(bufNet)
69 sink <- ClientEvent{client, EventDel, ""}
72 bufNet = bytes.TrimRight(bufNet, "\x00")
73 buf = append(buf, bufNet...)
74 if !bytes.HasSuffix(buf, []byte(CRLF)) {
77 for _, msg := range bytes.Split(buf[:len(buf)-2], []byte(CRLF)) {
79 sink <- ClientEvent{client, EventMsg, string(msg)}
86 // Send message as is with CRLF appended.
87 func (client *Client) Msg(text string) {
88 client.conn.Write([]byte(text + CRLF))
91 // Send message from server. It has ": servername" prefix.
92 func (client *Client) Reply(text string) {
93 client.Msg(":" + *client.hostname + " " + text)
96 // Send server message, concatenating all provided text parts and
97 // prefix the last one with ":".
98 func (client *Client) ReplyParts(code string, text ...string) {
99 parts := []string{code}
100 for _, t := range text {
101 parts = append(parts, t)
103 parts[len(parts)-1] = ":" + parts[len(parts)-1]
104 client.Reply(strings.Join(parts, " "))
107 // Send nicknamed server message. After servername it always has target
108 // client's nickname. The last part is prefixed with ":".
109 func (client *Client) ReplyNicknamed(code string, text ...string) {
110 client.ReplyParts(code, append([]string{client.nickname}, text...)...)
113 // Reply "461 not enough parameters" error for given command.
114 func (client *Client) ReplyNotEnoughParameters(command string) {
115 client.ReplyNicknamed("461", command, "Not enough parameters")
118 // Reply "403 no such channel" error for specified channel.
119 func (client *Client) ReplyNoChannel(channel string) {
120 client.ReplyNicknamed("403", channel, "No such channel")
123 func (client *Client) ReplyNoNickChan(channel string) {
124 client.ReplyNicknamed("401", channel, "No such nick/channel")