Created
January 2, 2016 08:16
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irc bot in golang
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| package main | |
| import ( | |
| "bufio" | |
| "fmt" | |
| "gopkg.in/ini.v1" | |
| "net" | |
| "os" | |
| "regexp" | |
| "strings" | |
| "sync" | |
| ) | |
| type Bot struct { | |
| nickname string | |
| realname string | |
| hostname string | |
| servername string | |
| username string | |
| server string | |
| channels []string | |
| incoming chan string | |
| outgoing chan string | |
| group *sync.WaitGroup | |
| reader *bufio.Reader | |
| writer *bufio.Writer | |
| } | |
| func (bot Bot) Initiate() { | |
| var wg sync.WaitGroup | |
| bot.group = &wg | |
| wg.Add(1) | |
| bot.incoming = make(chan string) | |
| bot.outgoing = make(chan string) | |
| if conn, err := net.Dial("tcp", bot.server); err != nil { | |
| fmt.Println(err) | |
| os.Exit(1) | |
| } else { | |
| bot.reader = bufio.NewReader(conn) | |
| bot.writer = bufio.NewWriter(conn) | |
| go bot.ReadFromNetwork() | |
| go bot.HandleIncomingMessages() | |
| go bot.HandleOutgoingMessages() | |
| wg.Wait() | |
| } | |
| } | |
| func (bot Bot) ReadFromNetwork() { | |
| defer bot.group.Done() | |
| for { | |
| if line, err := bot.reader.ReadString('\n'); err != nil { | |
| fmt.Println(err) | |
| break | |
| } else { | |
| bot.incoming <- line | |
| } | |
| } | |
| } | |
| func (bot Bot) HandleIncomingMessages() { | |
| message := <-bot.incoming | |
| bot.HandleUser() | |
| bot.HandleAutoJoin() | |
| for { | |
| fmt.Printf("<-- %s", message) | |
| bot.HandlePing(message) | |
| message = <-bot.incoming | |
| } | |
| } | |
| func (bot Bot) HandleOutgoingMessages() { | |
| for { | |
| message := <-bot.outgoing | |
| bot.writer.WriteString(message + "\n") | |
| bot.writer.Flush() | |
| fmt.Printf("--> %s\n", message) | |
| } | |
| } | |
| /* Protocol functions here. Pull out to separate file later */ | |
| func (bot Bot) HandleUser() { | |
| bot.outgoing <- fmt.Sprintf("USER %s %s %s %s", | |
| bot.username, | |
| bot.hostname, | |
| bot.servername, | |
| bot.realname) | |
| bot.outgoing <- fmt.Sprintf("NICK %s", bot.nickname) | |
| } | |
| func (bot Bot) HandleAutoJoin() { | |
| for _, channel := range bot.channels { | |
| bot.outgoing <- fmt.Sprintf("JOIN #%s", channel) | |
| } | |
| } | |
| func (bot Bot) HandlePing(msg string) { | |
| exp := regexp.MustCompile(`^PING :(.*)`) | |
| if matches := exp.FindStringSubmatch(msg); len(matches) > 0 { | |
| bot.outgoing <- fmt.Sprintf("PONG :%s", matches[1]) | |
| } | |
| } | |
| func MakeBotFromConfig(cfg *ini.File) Bot { | |
| /* Config Example | |
| nickname = godukes | |
| username = godukes | |
| hostname = godukes | |
| servername = godukes | |
| realname = godukes | |
| server = irc.freenode.net:6667 | |
| channels = gogobotbot godukes | |
| */ | |
| return Bot{ | |
| nickname: cfg.Section("").Key("nickname").Value(), | |
| username: cfg.Section("").Key("username").Value(), | |
| hostname: cfg.Section("").Key("hostname").Value(), | |
| servername: cfg.Section("").Key("servername").Value(), | |
| realname: cfg.Section("").Key("realname").Value(), | |
| server: cfg.Section("").Key("server").Value(), | |
| channels: strings.Fields(cfg.Section("").Key("channels").Value()), | |
| } | |
| } | |
| func main() { | |
| if cfg, err := ini.Load("bot.ini"); err != nil { | |
| fmt.Println(err) | |
| } else { | |
| bot := MakeBotFromConfig(cfg) | |
| bot.Initiate() | |
| } | |
| } |
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