-var (
- RENickname = regexp.MustCompile("^[a-zA-Z0-9-]{1,24}$")
-
- clients map[*Client]struct{} = make(map[*Client]struct{})
- clientsM sync.RWMutex
- rooms map[string]*Room = make(map[string]*Room)
- roomsM sync.RWMutex
- roomsGroup sync.WaitGroup
- roomSinks map[*Room]chan ClientEvent = make(map[*Room]chan ClientEvent)
-)
-
-func SendLusers(client *Client) {
- lusers := 0
- clientsM.RLock()
- for client := range clients {
- if client.registered {
- lusers++
- }
- }
- clientsM.RUnlock()
- client.ReplyNicknamed("251", fmt.Sprintf("There are %d users and 0 invisible on 1 servers", lusers))
-}
-
-func SendMotd(client *Client) {
- if motd == nil {
- client.ReplyNicknamed("422", "MOTD File is missing")
- return
- }
- motdText, err := ioutil.ReadFile(*motd)
- if err != nil {
- log.Printf("Can not read motd file %s: %v", *motd, err)
- client.ReplyNicknamed("422", "Error reading MOTD File")
- return
- }
- client.ReplyNicknamed("375", "- "+*hostname+" Message of the day -")
- for _, s := range strings.Split(strings.TrimSuffix(string(motdText), "\n"), "\n") {
- client.ReplyNicknamed("372", "- "+s)
- }
- client.ReplyNicknamed("376", "End of /MOTD command")
-}
-
-func SendWhois(client *Client, nicknames []string) {
- var c *Client
- var hostPort string
- var err error
- var subscriptions []string
- var room *Room
- var subscriber *Client
- for _, nickname := range nicknames {
- nickname = strings.ToLower(nickname)
- clientsM.RLock()
- for c = range clients {
- if strings.ToLower(*c.nickname) == nickname {
- clientsM.RUnlock()
- goto Found
- }
- }
- clientsM.RUnlock()
- client.ReplyNoNickChan(nickname)
- continue
- Found:
- hostPort, _, err = net.SplitHostPort(c.conn.RemoteAddr().String())
- if err != nil {
- log.Printf("Can't parse RemoteAddr %q: %v", hostPort, err)
- hostPort = "Unknown"
- }
- client.ReplyNicknamed("311", *c.nickname, *c.username, hostPort, "*", *c.realname)
- client.ReplyNicknamed("312", *c.nickname, *hostname, *hostname)
- if c.away != nil {
- client.ReplyNicknamed("301", *c.nickname, *c.away)
- }
- subscriptions = make([]string, 0)
- roomsM.RLock()
- for _, room = range rooms {
- for subscriber = range room.members {
- if *subscriber.nickname == nickname {
- subscriptions = append(subscriptions, *room.name)
- }
- }
- }
- roomsM.RUnlock()
- sort.Strings(subscriptions)
- client.ReplyNicknamed("319", *c.nickname, strings.Join(subscriptions, " "))
- client.ReplyNicknamed("318", *c.nickname, "End of /WHOIS list")
- }
-}
-
-func SendList(client *Client, cols []string) {
- var rs []string
- var r string
- if (len(cols) > 1) && (cols[1] != "") {
- rs = strings.Split(strings.Split(cols[1], " ")[0], ",")
- } else {
- rs = make([]string, 0)
- roomsM.RLock()
- for r = range rooms {
- rs = append(rs, r)
- }
- roomsM.RUnlock()
- }
- sort.Strings(rs)
- var room *Room
- var found bool
- for _, r = range rs {
- roomsM.RLock()
- if room, found = rooms[r]; found {
- client.ReplyNicknamed(
- "322",
- r,
- fmt.Sprintf("%d", len(room.members)),
- *room.topic,
- )
- }
- roomsM.RUnlock()
- }
- client.ReplyNicknamed("323", "End of /LIST")
-}
-
-// Unregistered client workflow processor. Unregistered client:
-// * is not PINGed
-// * only QUIT, NICK and USER commands are processed
-// * other commands are quietly ignored
-// When client finishes NICK/USER workflow, then MOTD and LUSERS are send to him.
-func ClientRegister(client *Client, cmd string, cols []string) {
- switch cmd {
- case "PASS":
- if len(cols) == 1 || len(cols[1]) < 1 {
- client.ReplyNotEnoughParameters("PASS")
- return
- }
- password := strings.TrimPrefix(cols[1], ":")
- client.password = &password
- case "NICK":
- if len(cols) == 1 || len(cols[1]) < 1 {
- client.ReplyParts("431", "No nickname given")
- return
- }
- nickname := cols[1]
- // Compatibility with some clients prepending colons to nickname
- nickname = strings.TrimPrefix(nickname, ":")
- nickname = strings.ToLower(nickname)
- clientsM.RLock()
- for existingClient := range clients {
- if *existingClient.nickname == nickname {
- clientsM.RUnlock()
- client.ReplyParts("433", "*", nickname, "Nickname is already in use")
- return
- }
- }
- clientsM.RUnlock()
- if !RENickname.MatchString(nickname) {
- client.ReplyParts("432", "*", cols[1], "Erroneous nickname")
- return
- }
- client.nickname = &nickname
- case "USER":
- if len(cols) == 1 {
- client.ReplyNotEnoughParameters("USER")
- return
- }
- args := strings.SplitN(cols[1], " ", 4)
- if len(args) < 4 {
- client.ReplyNotEnoughParameters("USER")
- return
- }
- client.username = &args[0]
- realname := strings.TrimLeft(args[3], ":")
- client.realname = &realname
- }
- if *client.nickname != "*" && *client.username != "" {
- if passwords != nil && *passwords != "" {
- if client.password == nil {
- client.ReplyParts("462", "You may not register")
- client.Close()
- return
- }
- contents, err := ioutil.ReadFile(*passwords)
- if err != nil {
- log.Fatalf("Can no read passwords file %s: %s", *passwords, err)
- return
- }
- for _, entry := range strings.Split(string(contents), "\n") {
- if entry == "" {
- continue
- }
- if lp := strings.Split(entry, ":"); lp[0] == *client.nickname && lp[1] != *client.password {
- client.ReplyParts("462", "You may not register")
- client.Close()
- return
- }
- }
- }
- client.registered = true
- client.ReplyNicknamed("001", "Hi, welcome to IRC")
- client.ReplyNicknamed("002", "Your host is "+*hostname+", running goircd "+Version)
- client.ReplyNicknamed("003", "This server was created sometime")
- client.ReplyNicknamed("004", *hostname+" goircd o o")
- SendLusers(client)
- SendMotd(client)
- log.Println(client, "logged in")
- }
-}
-
-// Register new room in Daemon. Create an object, events sink, save pointers
-// to corresponding daemon's places and start room's processor goroutine.
-func RoomRegister(name string) (*Room, chan ClientEvent) {
- roomNew := NewRoom(name)
- roomSink := make(chan ClientEvent)
- roomsM.Lock()
- rooms[name] = roomNew
- roomSinks[roomNew] = roomSink
- roomsM.Unlock()
- go roomNew.Processor(roomSink)
- roomsGroup.Add(1)
- return roomNew, roomSink
-}
-
-func HandlerJoin(client *Client, cmd string) {
- args := strings.Split(cmd, " ")
- rs := strings.Split(args[0], ",")
- var keys []string
- if len(args) > 1 {
- keys = strings.Split(args[1], ",")
- } else {
- keys = make([]string, 0)
- }
- var roomExisting *Room
- var roomSink chan ClientEvent
- var roomNew *Room
- for n, room := range rs {
- if !RoomNameValid(room) {
- client.ReplyNoChannel(room)
- continue
- }
- var key string
- if (n < len(keys)) && (keys[n] != "") {
- key = keys[n]
- } else {
- key = ""
- }
- roomsM.RLock()
- for roomExisting, roomSink = range roomSinks {
- if room == *roomExisting.name {
- roomsM.RUnlock()
- if (*roomExisting.key != "") && (*roomExisting.key != key) {
- goto Denied
- }
- roomSink <- ClientEvent{client, EventNew, ""}
- goto Joined
- }
- }
- roomsM.RUnlock()
- roomNew, roomSink = RoomRegister(room)
- log.Println("Room", roomNew, "created")
- if key != "" {
- roomNew.key = &key
- roomNew.StateSave()
- }
- roomSink <- ClientEvent{client, EventNew, ""}
- continue
- Denied:
- client.ReplyNicknamed("475", room, "Cannot join channel (+k) - bad key")
- Joined:
- }
-}
-