From 5c2a47d2b162341b76b8b70d82cf17a89f382943 Mon Sep 17 00:00:00 2001 From: Runxi Yu Date: Fri, 26 Jul 2024 08:00:00 +0800 Subject: Remove everything and become a simple TLS client This is because I don't need the InspIRCd stuff when I'm researching into new network layouts. --- README.md | 4 +- config.example.txt | 18 ---- main.go | 266 +++-------------------------------------------------- 3 files changed, 13 insertions(+), 275 deletions(-) diff --git a/README.md b/README.md index dd9387b..12c74bc 100644 --- a/README.md +++ b/README.md @@ -1,4 +1,4 @@ # tedfu -Sometime... sometime in the future... this will be a services package. For now, -it's a stupid pseudo-server that does nothing. +I guess these are some attempts at state-synchronization, redundant +links, and mesh-network message-passing. diff --git a/config.example.txt b/config.example.txt index 2b1bf64..e69de29 100644 --- a/config.example.txt +++ b/config.example.txt @@ -1,18 +0,0 @@ -sid=2AA -server_name=tedfu.irc.runxiyu.org -send_password=redacted -description=Some IRC pseudoserver test -main_nick=OperServ -main_real_host=services/OperServ -main_host=services/OperServ -main_ident=OperServ -main_addr=127.0.0.1 -main_user_ts=1 -main_umode=+iko -main_gecos=Operator Services -main_join_channels=#services -main_channel_mode_on_join=o -main_channel_mode_after_join=o -main_uid_without_sid=000001 -main_nick_ts=1 -connect=irc.runxiyu.org:7005 diff --git a/main.go b/main.go index 6897840..ca40726 100644 --- a/main.go +++ b/main.go @@ -6,286 +6,42 @@ import ( "bufio" "crypto/tls" "fmt" - "net" - "os" - "strings" - "time" "log" ) -type Config struct { - Sid string - ServerName string - SendPassword string - Description string - MainNick string - MainRealHost string - MainHost string - MainIdent string - MainAddr string - MainUserTs string - MainUmode string - MainGecos string - MainJoinChannels []string - MainChannelModeOnJoin string - MainChannelModeAfterJoin string - MainUidWithoutSid string - MainNickTs string - Connect string -} - -func loadConfig(filename string) (Config, error) { - file, err := os.Open(filename) - if err != nil { - return Config{}, err - } - defer file.Close() - - config := Config{} - scanner := bufio.NewScanner(file) - for scanner.Scan() { - line := scanner.Text() - parts := strings.SplitN(line, "=", 2) - if len(parts) != 2 { - continue - } - key, value := parts[0], parts[1] - switch key { - case "sid": - config.Sid = value - case "server_name": - config.ServerName = value - case "send_password": - config.SendPassword = value - case "description": - config.Description = value - case "main_nick": - config.MainNick = value - case "main_real_host": - config.MainRealHost = value - case "main_host": - config.MainHost = value - case "main_ident": - config.MainIdent = value - case "main_addr": - config.MainAddr = value - case "main_user_ts": - config.MainUserTs = value - case "main_umode": - config.MainUmode = value - case "main_gecos": - config.MainGecos = value - case "main_join_channels": - config.MainJoinChannels = strings.Split(value, ",") - case "main_channel_mode_on_join": - config.MainChannelModeOnJoin = value - case "main_channel_mode_after_join": - config.MainChannelModeAfterJoin = value - case "main_uid_without_sid": - config.MainUidWithoutSid = value - case "main_nick_ts": - config.MainNickTs = value - case "connect": - config.Connect = value - default: - log.Printf("Unknown configuration option %s\n", key) - } - } - if err := scanner.Err(); err != nil { - return Config{}, err - } - - return config, nil -} - -func handleMessage(conn net.Conn, msg string, config Config) { - var prefix string - - if strings.HasPrefix(msg, "@") { - firstSpaceIndex := strings.Index(msg, " ") - if firstSpaceIndex == -1 { - fmt.Fprintf(conn, ":%s ERROR :IRCv3 tag, but no space\n", config.Sid) - return - } - msg = msg[firstSpaceIndex+1:] - } - if strings.HasPrefix(msg, ":") { - firstSpaceIndex := strings.Index(msg, " ") - if firstSpaceIndex == -1 { - fmt.Fprintf(conn, ":%s ERROR :Prefix, but no space\n", config.Sid) - return - } - prefix = msg[1:firstSpaceIndex] - msg = msg[firstSpaceIndex+1:] - } - - var msgArray []string - for { - spaceIndex := strings.Index(msg, " ") - if msg[0] == ':' { - msgArray = append(msgArray, msg[1:]) - break - } else if spaceIndex == -1 { - msgArray = append(msgArray, msg) - break - } - msgArray = append(msgArray, msg[:spaceIndex]) - msg = msg[spaceIndex+1:] - } - - switch msgArray[0] { - case "PING": - handlePing(conn, msgArray, prefix, config) - case "PRIVMSG": - handlePrivMsg(conn, msgArray, prefix, config) - default: - // fmt.Printf("Unknown command %s\n", msgArray[0]) - } -} - -func handlePing(conn net.Conn, msgArray []string, prefix string, config Config) { - if len(msgArray) == 2 { - if msgArray[1] != config.Sid { - fmt.Fprintf(conn, ":%s ERROR :Got PING intended for \"%s\"\n", config.Sid, msgArray[1]) - return - } - if prefix == "" { - fmt.Fprintf(conn, ":%s ERROR :Got PING with one argument without prefix\n", config.Sid) - return - } - fmt.Fprintf(conn, ":%s PONG :%s\n", config.Sid, prefix) - } else if len(msgArray) == 3 { - fmt.Fprintf(conn, ":%s PONG %s :%s\n", config.Sid, msgArray[2], msgArray[1]) - } else { - fmt.Fprintf(conn, ":%s ERROR :msgArray.length\n", config.Sid) - } -} - -func handlePrivMsg(conn net.Conn, msgArray []string, prefix string, config Config) { - if prefix == "" { - fmt.Fprintf(conn, ":%s ERROR :Got PRIVMSG without prefix\n", config.Sid) - return - } - - var replyTo string - if strings.HasPrefix(msgArray[1], "#") { - if !contains(config.MainJoinChannels, msgArray[1]) { - return - } - if !strings.HasPrefix(msgArray[2], fmt.Sprintf("%s: ", config.MainNick)) { - return - } - msgArray[2] = msgArray[2][len(fmt.Sprintf("%s: ", config.MainNick)):] - replyTo = msgArray[1] - } else if msgArray[1] == fmt.Sprintf("%s%s", config.Sid, config.MainUidWithoutSid) { - replyTo = prefix - } else { - return - } - - cmdArray := strings.Split(msgArray[2], " ") - - cmdArray[0] = strings.ToUpper(cmdArray[0]) - - switch cmdArray[0] { - case "HELP": - fmt.Fprintf(conn, ":%s%s NOTICE %s :Hi! I am an instance of https://git.sr.ht/~runxiyu/tedfu/, an InspIRCd pseudoserver written in Go.\n", config.Sid, config.MainUidWithoutSid, replyTo) - case "`": - if len(cmdArray) > 1 { - fmt.Fprintf(conn, strings.Join(cmdArray[1:], " ")+"\n") - } - default: - fmt.Fprintf(conn, ":%s%s NOTICE %s :Unknown command: %s\n", config.Sid, config.MainUidWithoutSid, replyTo, cmdArray[0]) - } -} - -func connect(config Config) { +func connect() error { tlsConfig := &tls.Config{ InsecureSkipVerify: true, } - conn, err := tls.Dial("tcp", config.Connect, tlsConfig) + conn, err := tls.Dial("tcp", "127.0.0.1:12345", tlsConfig) if err != nil { - fmt.Println("Error connecting:", err) - return + log.Fatal("Error connecting: ", err) + return err } defer conn.Close() reader := bufio.NewReader(conn) writer := bufio.NewWriter(conn) - writer.WriteString("CAPAB START 1205\n") - writer.WriteString("CAPAB END\n") - writer.WriteString(fmt.Sprintf("SERVER %s %s 0 %s :%s\n", config.ServerName, config.SendPassword, config.Sid, config.Description)) - writer.WriteString(fmt.Sprintf("BURST %d\n", time.Now().Unix())) - writer.WriteString(fmt.Sprintf( - ":%s UID %s%s %s %s %s %s %s %s %s %s :%s\n", - config.Sid, - config.Sid, - config.MainUidWithoutSid, - config.MainNickTs, - config.MainNick, - config.MainRealHost, - config.MainHost, - config.MainIdent, - config.MainAddr, - config.MainUserTs, - config.MainUmode, - config.MainGecos, - )) - for _, channelName := range config.MainJoinChannels { - writer.WriteString(fmt.Sprintf( - ":%s FJOIN %s %s + :%s,%s%s\n", - config.Sid, - channelName, - config.MainUserTs, - config.MainChannelModeOnJoin, - config.Sid, - config.MainUidWithoutSid, - )) - writer.WriteString(fmt.Sprintf( - ":%s MODE %s +%s :%s%s\n", // should probably use IMODE or some new 1205 thing - config.Sid, - channelName, - config.MainChannelModeAfterJoin, - config.Sid, - config.MainUidWithoutSid, - )) - } - writer.WriteString("ENDBURST\n") + writer.WriteString("e\n") writer.Flush() for { msg, err := reader.ReadString('\n') if err != nil { - fmt.Println("Error reading:", err) - break - } - if msg[len(msg)-1] == '\n' { - msg = msg[:len(msg)-1] - } else { - panic("Message not newline terminated") + log.Print("Error reading: ", err) + return err } + msg = msg[:len(msg)-1] fmt.Println(msg) - handleMessage(conn, msg, config) - } -} -func contains(slice []string, item string) bool { - for _, v := range slice { - if v == item { - return true - } + // TODO: Handle the mssage } - return false } func main() { - config, err := loadConfig("config.txt") - if err != nil { - fmt.Println("Error loading config:", err) - return + if err := connect(); err != nil { + panic(err) } - - connect(config) } -- cgit v1.2.3