added IRC bot frontend

src/bot.go

@@ -0,0 +1,79 @@
+package main
+
+import (
+    "bufio"
+    "github.com/goshuirc/irc-go/ircmsg"
+    "log"
+    "os"
+)
+
+type Bot struct {
+    Nick        string
+    Ident       string
+    Realname    string
+    Server      Server
+    ChansToJoin []string
+    NSPasswd    string
+    NSNick      string
+    Logger      log.Logger
+}
+
+type BotConfig struct {
+    Nick        string
+    Ident       string
+    Realname    string
+    ChansToJoin []string
+    NSNick      string
+    NSPasswd    string
+}
+
+func newBot(config BotConfig, host, port, connectionName string, ssl bool) *Bot {
+    logger := *log.New(os.Stdout, "", log.LstdFlags)
+
+    return &Bot{
+        Nick:        config.Nick,
+        Ident:       config.Ident,
+        Realname:    config.Realname,
+        NSPasswd:    config.NSPasswd,
+        NSNick:      config.NSNick,
+        ChansToJoin: config.ChansToJoin,
+        Server:      *NewServer(host, port, connectionName, ssl, logger),
+        Logger:      logger,
+    }
+}
+
+func (b *Bot) run() {
+    err := b.Server.Connect()
+    if err != nil {
+        b.Logger.Fatal(err)
+    }
+
+    b.sendRaw(MakeMessage("NICK", b.Nick))
+    b.sendRaw(MakeMessage("USER", b.Ident, "0", "0", b.Realname))
+    b.readLoop()
+}
+
+func (b *Bot) sendRaw(message ircmsg.IrcMessage) {
+    line, err := message.LineBytes()
+    if err != nil {
+        b.Logger.Printf("could not convert IrcMessage to string: %v", err)
+        return
+    }
+    b.Logger.Printf(">> %s", line)
+    b.Server.Conn.Write(line)
+}
+
+func (b *Bot) readLoop() {
+    scanner := bufio.NewScanner(b.Server.Conn)
+    for scanner.Scan() {
+        b.HandleLine(scanner.Text())
+    }
+}
+
+func (b *Bot) joinChannel(channelName string) {
+    b.sendRaw(MakeMessage("JOIN", channelName))
+}
+
+func (b *Bot) sendPrivMessage(target, message string) {
+    b.sendRaw(MakeMessage("PRIVMSG", message))
+}

src/botLineHandlers.go

@@ -0,0 +1,38 @@
+package main
+
+import (
+    "fmt"
+    "github.com/goshuirc/irc-go/ircmsg"
+)
+
+func createPong(ping ircmsg.IrcMessage) ircmsg.IrcMessage {
+    return ircmsg.MakeMessage(nil, "", "PONG", ping.Params[0])
+}
+
+func (b *Bot) HandleLine(lineIn string) {
+    line, err := ircmsg.ParseLine(lineIn)
+    if err != nil {
+        b.Logger.Printf("could not parse IRC line: %v", err)
+        return
+    }
+
+    b.Logger.Printf("<< %s", line.SourceLine)
+
+    switch line.Command {
+    case "PING":
+        b.sendRaw(createPong(line))
+
+    case "001":
+        b.OnWelcome()
+    }
+}
+
+func (b *Bot) OnWelcome() {
+    if b.NSNick != "" && b.NSPasswd != "" {
+        b.sendPrivMessage("NickServ", fmt.Sprintf("IDENTIFY %s %s", b.NSNick, b.NSPasswd))
+    }
+
+    for _, channel := range b.ChansToJoin {
+        b.joinChannel(channel)
+    }
+}

src/config.go

@@ -7,9 +7,15 @@ import (
 )
 
 type Config struct {
-    Secret   string
+    Secret      string `json:"secret"`
     BindHost    string `json:"bind_host"`
     BindPort    string `json:"bind_port"`
+    Nick        string `json:"nick"`
+    Ident       string `json:"ident"`
+    Realname    string `json:"realname"`
+    NsNick      string `json:"ns_nick"`
+    NsPasswd    string `json:"ns_passwd"`
+    ChansToJoin []string `json:"chans_to_join"`
 }
 
 func getConfig() Config {

src/ircUtil.go

@@ -0,0 +1,7 @@
+package main
+
+import "github.com/goshuirc/irc-go/ircmsg"
+
+func MakeMessage(command string, params... string) ircmsg.IrcMessage{
+    return ircmsg.MakeMessage(nil, "", command, params...)
+}

src/main.go

@@ -1,15 +1,26 @@
 package main
 
 import "fmt"
+
 const configPrint = `
 CONFIG:
     Secret:   %q
     BindHost: %q
     BindPort: %q
 `
+
 func main() {
     config := getConfig()
     fmt.Printf(configPrint, config.Secret, config.BindHost, config.BindPort)
+    bc := BotConfig{
+        Nick:  config.Nick,
+        Ident: config.Ident,
+        Realname: config.Realname,
+        ChansToJoin: config.ChansToJoin,
+    }
 
+    bot := newBot(bc, "chimera.snoonet.org", "6697", "snoonet", true)
+
+    go bot.run()
     ListenForWebHook(config)
 }

src/server.go

@@ -0,0 +1,44 @@
+package main
+
+import (
+    "crypto/tls"
+    "fmt"
+    "log"
+    "net"
+)
+
+type Server struct {
+    Host   string
+    Port   string
+    Name   string
+    SSL    bool
+    Conn   net.Conn
+    Logger log.Logger
+}
+
+func NewServer(host, port, name string, ssl bool, logger log.Logger) *Server {
+    return &Server{
+        host,
+        port,
+        name,
+        ssl,
+        nil,
+        logger,
+    }
+}
+
+func (s *Server) Connect() error {
+    var conn net.Conn
+    var err error
+
+    if s.SSL {
+        conn, err = tls.Dial("tcp", fmt.Sprintf("%s:%s", s.Host, s.Port), nil)
+    } else {
+        conn, err = net.Dial("tcp", fmt.Sprintf("%s:%s", s.Host, s.Port))
+    }
+    if err != nil {
+        return err
+    }
+    s.Conn = conn
+    return nil
+}