/*
goircd -- minimalistic simple Internet Relay Chat (IRC) server
-Copyright (C) 2014 Sergey Matveev <stargrave@stargrave.org>
+Copyright (C) 2014-2022 Sergey Matveev <stargrave@stargrave.org>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
+the Free Software Foundation, version 3 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+
package main
import (
"crypto/tls"
"flag"
- "io/ioutil"
"log"
"net"
+ "os"
+ "os/signal"
"path"
"path/filepath"
+ "strconv"
"strings"
+ "syscall"
+)
+
+const (
+ Version = "1.9.1"
+
+ StateTopicFilename = "topic"
+ StateKeyFilename = "key"
+
+ EventNew = iota
+ EventDel = iota
+ EventMsg = iota
+ EventTopic = iota
+ EventWho = iota
+ EventMode = iota
+ EventTerm = iota
+ EventTick = iota
)
+type ClientEvent struct {
+ client *Client
+ eventType int
+ text string
+}
+
+type StateEvent struct {
+ where string
+ topic string
+ key string
+}
+
var (
- hostname = flag.String("hostname", "localhost", "Hostname")
- bind = flag.String("bind", ":6667", "Address to bind to")
- motd = flag.String("motd", "", "Path to MOTD file")
- logdir = flag.String("logdir", "", "Absolute path to directory for logs")
- statedir = flag.String("statedir", "", "Absolute path to directory for states")
+ hostname = flag.String("hostname", "localhost", "hostname")
+ bind = flag.String("bind", "[::1]:6667", "address to bind to")
+ cloak = flag.String("cloak", "", "cloak user's host with the given hostname")
+ motd = flag.String("motd", "", "path to MOTD file")
+ logdir = flag.String("logdir", "", "absolute path to directory for logs")
+ statedir = flag.String("statedir", "", "absolute path to directory for states")
+ passwords = flag.String("passwd", "", "optional path to passwords file")
+ tlsBind = flag.String("tlsbind", "", "TLS address to bind to")
+ tlsPEM = flag.String("tlspem", "", "path to TLS certificat+key PEM file")
+ permStateDirS = flag.String("perm-state-dir", "755", "state directory permissions")
+ permStateFileS = flag.String("perm-state-file", "600", "state files permissions")
+ permLogFileS = flag.String("perm-log-file", "644", "log files permissions")
+ timestamped = flag.Bool("timestamped", false, "enable timestamps on stderr messages")
+ verbose = flag.Bool("verbose", false, "enable verbose logging")
+ debug = flag.Bool("debug", false, "enable debug (traffic) logging")
- ssl = flag.Bool("ssl", false, "Use SSL only.")
- sslKey = flag.String("ssl_key", "", "SSL keyfile.")
- sslCert = flag.String("ssl_cert", "", "SSL certificate.")
+ permStateDir os.FileMode
+ permStateFile os.FileMode
+ permLogFile os.FileMode
- verbose = flag.Bool("v", false, "Enable verbose logging.")
+ stateSink chan StateEvent = make(chan StateEvent)
)
-func Run() {
- var client *Client
- events := make(chan ClientEvent)
- log.SetFlags(log.Ldate | log.Lmicroseconds | log.Lshortfile)
+func permParse(s string) os.FileMode {
+ r, err := strconv.ParseUint(s, 8, 16)
+ if err != nil {
+ log.Fatalln(err)
+ }
+ return os.FileMode(r)
+}
+
+func listenerLoop(ln net.Listener, events chan ClientEvent) {
+ for {
+ conn, err := ln.Accept()
+ if err != nil {
+ log.Println("error during accept", err)
+ continue
+ }
+ NewClient(conn, events)
+ }
+}
+
+func main() {
+ flag.Parse()
+ permStateDir = permParse(*permStateDirS)
+ permStateFile = permParse(*permStateFileS)
+ permLogFile = permParse(*permLogFileS)
+
+ if *timestamped {
+ log.SetFlags(log.Ldate | log.Lmicroseconds | log.Lshortfile)
+ } else {
+ log.SetFlags(log.Lshortfile)
+ }
+ log.SetOutput(os.Stdout)
- log_sink := make(chan LogEvent)
if *logdir == "" {
// Dummy logger
go func() {
- for _ = range log_sink {
+ for range logSink {
}
}()
} else {
if !path.IsAbs(*logdir) {
- log.Fatalln("Need absolute path for logdir")
- return
+ log.Fatalln("need absolute path for logdir")
}
- go Logger(*logdir, log_sink)
- log.Println(*logdir, "logger initialized")
+ go Logger(*logdir, logSink)
}
- state_sink := make(chan StateEvent)
- daemon := NewDaemon(*hostname, *motd, log_sink, state_sink)
- daemon.Verbose = *verbose
if *statedir == "" {
// Dummy statekeeper
go func() {
- for _ = range state_sink {
+ for range stateSink {
}
}()
} else {
if !path.IsAbs(*statedir) {
- log.Fatalln("Need absolute path for statedir")
+ log.Fatalln("need absolute path for statedir")
}
states, err := filepath.Glob(path.Join(*statedir, "#*"))
if err != nil {
- log.Fatalln("Can not read statedir", err)
+ log.Fatalln("can not read statedir", err)
}
for _, state := range states {
- buf, err := ioutil.ReadFile(state)
+ buf, err := os.ReadFile(path.Join(state, StateTopicFilename))
if err != nil {
- log.Fatalf("Can not read state %s: %v", state, err)
+ log.Fatalf(
+ "can not read state %s/%s: %v",
+ state, StateTopicFilename, err,
+ )
}
- room, _ := daemon.RoomRegister(path.Base(state))
- contents := strings.Split(string(buf), "\n")
- if len(contents) < 2 {
- log.Printf("State corrupted for %s: %q", room.name, contents)
+ room := RoomRegister(path.Base(state))
+ room.topic = strings.TrimRight(string(buf), "\n")
+ buf, err = os.ReadFile(path.Join(state, StateKeyFilename))
+ if err == nil {
+ room.key = strings.TrimRight(string(buf), "\n")
} else {
- room.topic = contents[0]
- room.key = contents[1]
- log.Println("Loaded state for room", room.name)
+ if !os.IsNotExist(err) {
+ log.Fatalf(
+ "can not read state %s/%s: %v",
+ state, StateKeyFilename, err,
+ )
+ }
}
+ log.Println("loaded state for room:", room.name)
}
- go StateKeeper(*statedir, state_sink)
- log.Println(*statedir, "statekeeper initialized")
+
+ go func() {
+ for event := range stateSink {
+ statePath := path.Join(*statedir, event.where)
+ if _, err := os.Stat(statePath); os.IsNotExist(err) {
+ if err := os.Mkdir(statePath, permStateDir); err != nil {
+ log.Printf("can not create state %s: %v", statePath, err)
+ continue
+ }
+ }
+
+ topicPath := path.Join(statePath, StateTopicFilename)
+ if err := os.WriteFile(
+ topicPath,
+ []byte(event.topic+"\n"),
+ permStateFile,
+ ); err != nil {
+ log.Printf("can not write statefile %s: %v", topicPath, err)
+ continue
+ }
+
+ keyPath := path.Join(statePath, StateKeyFilename)
+ if err := os.WriteFile(
+ keyPath,
+ []byte(event.key+"\n"),
+ permStateFile,
+ ); err != nil {
+ log.Printf("can not write statefile %s: %v", keyPath, err)
+ }
+ }
+ }()
}
- var listener net.Listener
- if *ssl {
- cert, err := tls.LoadX509KeyPair(*sslCert, *sslKey)
+ events := make(chan ClientEvent)
+ if *bind != "" {
+ ln, err := net.Listen("tcp", *bind)
if err != nil {
- log.Fatalf("Could not load SSL keys from %s and %s: %s", *sslCert, *sslKey, err)
+ log.Fatalf("can not listen on %s: %v", *bind, err)
}
- config := tls.Config{Certificates: []tls.Certificate{cert}}
- listener, err = tls.Listen("tcp", *bind, &config)
+ go listenerLoop(ln, events)
+ }
+ if *tlsBind != "" {
+ cert, err := tls.LoadX509KeyPair(*tlsPEM, *tlsPEM)
if err != nil {
- log.Fatalf("Can not listen on %s: %v", *bind, err)
+ log.Fatalf("can not load TLS keys from %s: %s", *tlsPEM, err)
}
- } else {
- var err error
- listener, err = net.Listen("tcp", *bind)
+ config := tls.Config{Certificates: []tls.Certificate{cert}}
+ ln, err := tls.Listen("tcp", *tlsBind, &config)
if err != nil {
- log.Fatalf("Can not listen on %s: %v", *bind, err)
+ log.Fatalf("can not listen on %s: %v", *tlsBind, err)
}
+ go listenerLoop(ln, events)
}
- log.Println("Listening on", *bind)
+ log.Println("goircd", Version, "started")
- go daemon.Processor(events)
- for {
- conn, err := listener.Accept()
- if err != nil {
- log.Println("Error during accepting connection", err)
- continue
- }
- client = NewClient(*hostname, conn)
- go client.Processor(events)
- }
-}
+ needsShutdown := make(chan os.Signal, 0)
+ signal.Notify(needsShutdown, syscall.SIGTERM, syscall.SIGINT)
+ go func() {
+ <-needsShutdown
+ events <- ClientEvent{eventType: EventTerm}
+ log.Println("goircd shutting down")
+ }()
-func main() {
- flag.Parse()
- Run()
+ finished := make(chan struct{})
+ go Processor(events, finished)
+ <-finished
}