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Code Issues Projects Releases Wiki Activity

implement join/quit and channel messages properly

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This commit is contained in:
Jeremy Latt 2014-02-08 17:10:04 -08:00
parent 3f9495cda0
commit 06648393a1
7 changed files with 100 additions and 84 deletions
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1
README.md
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@ -13,6 +13,7 @@ I wanted to learn Go.
## Helpful Documentation
- [RFC 1459: Internet Relay Chat Protocol](http://tools.ietf.org/html/rfc1459)
- [RFC 2811: IRC Channel Management](http://tools.ietf.org/html/rfc2811)
- [RFC 2812: IRC Client Protocol](http://tools.ietf.org/html/rfc2812)
- [RFC 2813: IRC Server Protocol](http://tools.ietf.org/html/rfc2813)

11
irc/channel.go
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@ -55,7 +55,10 @@ func (channel *Channel) receiveReplies(replies <-chan Reply) {
log.Printf("%s ← %s : %s", channel, reply.Source(), reply)
}
for client := range channel.members {
client.replies <- reply
var dest Identifier = client
if reply.Source() != dest {
client.replies <- reply
}
}
}
}
@ -99,10 +102,6 @@ func (channel *Channel) Nick() string {
return channel.name
}
func (channel *Channel) PublicId() string {
return channel.name
}
func (channel *Channel) String() string {
return channel.Id()
}
@ -176,5 +175,5 @@ func (m *TopicCommand) HandleChannel(channel *Channel) {
}
func (m *PrivMsgCommand) HandleChannel(channel *Channel) {
channel.replies <- RplPrivMsgChannel(channel, m.Client(), m.message)
channel.replies <- RplPrivMsg(m.Client(), channel, m.message)
}

58
irc/client.go
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@ -71,20 +71,33 @@ func (c *Client) writeConn(write chan<- string, replies <-chan Reply) {
}
}
func (client *Client) Destroy() *Client {
client.conn.Close()
return client
}
func (c *Client) Replies() chan<- Reply {
return c.replies
}
func (c *Client) Server() *Server {
return c.server
func (client *Client) HasNick() bool {
return client.nick != ""
}
func (c *Client) Nick() string {
if c.HasNick() {
return c.nick
func (client *Client) HasUsername() bool {
return client.username != ""
}
func (fromClient *Client) InterestedClients() ClientSet {
clients := make(ClientSet)
clients[fromClient] = true
for channel := range fromClient.channels {
for client := range channel.members {
clients[client] = true
}
}
return "guest"
return clients
}
func (c *Client) UModeString() string {
@ -94,23 +107,20 @@ func (c *Client) UModeString() string {
return ""
}
func (c *Client) HasNick() bool {
return c.nick != ""
}
func (c *Client) HasUsername() bool {
return c.username != ""
}
func (c *Client) Username() string {
if c.HasUsername() {
return c.username
}
return "guest"
}
func (c *Client) UserHost() string {
return fmt.Sprintf("%s!%s@%s", c.Nick(), c.Username(), c.hostname)
nick := c.nick
if nick == "" {
nick = "*"
}
username := c.username
if username == "" {
username = "*"
}
return fmt.Sprintf("%s!%s@%s", nick, username, c.hostname)
}
func (c *Client) Nick() string {
return c.nick
}
func (c *Client) Id() string {
@ -120,7 +130,3 @@ func (c *Client) Id() string {
func (c *Client) String() string {
return c.UserHost()
}
func (c *Client) PublicId() string {
return fmt.Sprintf("%s!%s@%s", c.Nick(), c.Nick(), c.server.Id())
}

3
irc/constants.go
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@ -8,7 +8,7 @@ var (
)
const (
VERSION = "irc-1"
VERSION = "ergonomadic-1"
)
const (
@ -150,6 +150,7 @@ const (
ERR_UMODEUNKNOWNFLAG = 501
ERR_USERSDONTMATCH = 502
// message codes
RPL_ERROR = "ERROR"
RPL_INVITE = "INVITE"
RPL_JOIN = "JOIN"
RPL_NICK = "NICK"

9
irc/net.go
View File

@ -20,9 +20,12 @@ func StringReadChan(conn net.Conn) <-chan string {
ch := make(chan string)
reader := bufio.NewReader(conn)
go func() {
defer conn.Close()
defer close(ch)
for {
line, err := readTrimmedLine(reader)
if err != nil {
log.Print("net: ", err)
break
}
if DEBUG_NET {
@ -30,7 +33,6 @@ func StringReadChan(conn net.Conn) <-chan string {
}
ch <- line
}
close(ch)
}()
return ch
}
@ -39,18 +41,19 @@ func StringWriteChan(conn net.Conn) chan<- string {
ch := make(chan string)
writer := bufio.NewWriter(conn)
go func() {
defer conn.Close()
defer close(ch)
for str := range ch {
if DEBUG_NET {
log.Printf("%s ← %s : %s", conn.RemoteAddr(), conn.LocalAddr(), str)
}
if _, err := writer.WriteString(str + "\r\n"); err != nil {
log.Print("net: ", err)
break
}
writer.Flush()
}
close(ch)
}()
return ch
}

15
irc/reply.go
View File

@ -8,7 +8,6 @@ import (
type Identifier interface {
Id() string
PublicId() string
Nick() string
}
@ -146,10 +145,6 @@ func RplNick(source Identifier, newNick string) Reply {
return NewStringReply(source, RPL_NICK, newNick)
}
func RplPrivMsgChannel(channel *Channel, source Identifier, message string) Reply {
return NewStringReply(source, RPL_PRIVMSG, "%s :%s", channel.name, message)
}
func RplJoin(channel *Channel, client *Client) Reply {
return NewStringReply(client, RPL_JOIN, channel.name)
}
@ -158,14 +153,18 @@ func RplPart(channel *Channel, client *Client, message string) Reply {
return NewStringReply(client, RPL_PART, "%s :%s", channel.name, message)
}
func RplPong(server *Server) Reply {
return NewStringReply(server, RPL_PONG, server.Id())
func RplPong(server *Server, client *Client) Reply {
return NewStringReply(server, RPL_PONG, client.Nick())
}
func RplQuit(client *Client, message string) Reply {
return NewStringReply(client, RPL_QUIT, ":%s", message)
}
func RplError(server *Server, target Identifier) Reply {
return NewStringReply(server, RPL_ERROR, target.Nick())
}
func RplInviteMsg(channel *Channel, inviter *Client) Reply {
return NewStringReply(inviter, RPL_INVITE, channel.name)
}
@ -189,7 +188,7 @@ func RplCreated(server *Server) Reply {
func RplMyInfo(server *Server) Reply {
return NewNumericReply(server, RPL_MYINFO,
"%s %s a kn", server.name, VERSION)
"%s %s aiwroOs kn", server.name, VERSION)
}
func RplUModeIs(server *Server, client *Client) Reply {

87
irc/server.go
View File

@ -1,6 +1,9 @@
package irc
import (
"crypto/rand"
"encoding/binary"
"fmt"
"log"
"net"
"time"
@ -49,18 +52,16 @@ func (s *Server) Listen(addr string) {
}
s.hostname = LookupHostname(listener.Addr())
if DEBUG_SERVER {
log.Print("Server.Listen: listening on ", addr)
}
log.Print("Server.Listen: listening on ", addr)
for {
conn, err := listener.Accept()
if err != nil {
log.Print("Server.Listen: ", err)
log.Print("Server.Accept: ", err)
continue
}
if DEBUG_SERVER {
log.Print("Server.Listen: accepted ", conn.RemoteAddr())
log.Print("Server.Accept: ", conn.RemoteAddr())
}
NewClient(s, conn)
}
@ -77,17 +78,22 @@ func (s *Server) GetOrMakeChannel(name string) *Channel {
return channel
}
// Send a message to clients of channels fromClient is a member.
func (s *Server) interestedClients(fromClient *Client) ClientSet {
clients := make(ClientSet)
clients[fromClient] = true
for channel := range fromClient.channels {
for client := range channel.members {
clients[client] = true
func (s *Server) GenerateGuestNick() string {
bytes := make([]byte, 8)
for {
_, err := rand.Read(bytes)
if err != nil {
panic(err)
}
randInt, n := binary.Uvarint(bytes)
if n <= 0 {
continue // TODO handle error
}
nick := fmt.Sprintf("guest%d", randInt)
if s.clients[nick] == nil {
return nick
}
}
return clients
}
// server functionality
@ -112,15 +118,11 @@ func (s *Server) Id() string {
}
func (s *Server) String() string {
return s.Id()
}
func (s *Server) PublicId() string {
return s.Id()
return s.name
}
func (s *Server) Nick() string {
return s.name
return s.Id()
}
func (s *Server) DeleteChannel(channel *Channel) {
@ -136,7 +138,7 @@ func (m *UnknownCommand) HandleServer(s *Server) {
}
func (m *PingCommand) HandleServer(s *Server) {
m.Client().Replies() <- RplPong(s)
m.Client().Replies() <- RplPong(s, m.Client())
}
func (m *PongCommand) HandleServer(s *Server) {
@ -163,13 +165,11 @@ func (m *NickCommand) HandleServer(s *Server) {
}
reply := RplNick(c, m.nickname)
for iclient := range s.interestedClients(c) {
for iclient := range c.InterestedClients() {
iclient.replies <- reply
}
if c.HasNick() {
delete(s.clients, c.nick)
}
delete(s.clients, c.nick)
s.clients[m.nickname] = c
c.nick = m.nickname
@ -190,18 +190,19 @@ func (m *UserMsgCommand) HandleServer(s *Server) {
func (m *QuitCommand) HandleServer(s *Server) {
c := m.Client()
reply := RplQuit(c, m.message)
for client := range s.interestedClients(c) {
client.replies <- reply
}
cmd := &PartCommand{
BaseCommand: BaseCommand{c},
}
for channel := range c.channels {
channel.commands <- cmd
}
c.conn.Close()
delete(s.clients, c.nick)
for channel := range c.channels {
delete(channel.members, c)
}
c.replies <- RplError(s, c)
c.Destroy()
reply := RplQuit(c, m.message)
for client := range c.InterestedClients() {
client.replies <- reply
}
}
func (m *JoinCommand) HandleServer(s *Server) {
@ -266,10 +267,16 @@ func (m *PrivMsgCommand) HandleServer(s *Server) {
}
func (m *ModeCommand) HandleServer(s *Server) {
for _, change := range m.changes {
if change.mode == Invisible {
m.Client().invisible = change.add
client := m.Client()
if client.Nick() == m.nickname {
for _, change := range m.changes {
if change.mode == Invisible {
client.invisible = change.add
}
}
client.replies <- RplUModeIs(s, client)
return
}
m.Client().replies <- RplUModeIs(s, m.Client())
client.replies <- ErrUsersDontMatch(client)
}