2012-12-09 07:54:58 +01:00
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package irc
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2012-12-17 04:13:53 +01:00
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import (
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"log"
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2014-02-14 17:42:56 +01:00
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"sync"
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2012-12-17 04:13:53 +01:00
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)
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2012-12-09 07:54:58 +01:00
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type Channel struct {
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2014-02-09 07:06:10 +01:00
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banList []UserMask
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2012-12-15 23:34:20 +01:00
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commands chan<- ChannelCommand
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2014-02-13 06:04:50 +01:00
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destroyed bool
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2012-12-12 08:04:03 +01:00
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key string
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2014-02-05 04:28:24 +01:00
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members ClientSet
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mutex *sync.Mutex
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2014-02-05 04:28:24 +01:00
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name string
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2012-12-12 08:04:03 +01:00
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noOutside bool
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password string
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2014-02-05 04:28:24 +01:00
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replies chan<- Reply
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server *Server
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topic string
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2012-12-09 07:54:58 +01:00
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}
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2014-02-09 03:14:39 +01:00
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func IsChannel(target string) bool {
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if target == "" {
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return false
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}
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switch target[0] {
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case '&', '#', '+', '!':
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return true
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}
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return false
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}
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2014-02-05 04:28:24 +01:00
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// NewChannel creates a new channel from a `Server` and a `name`
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// string, which must be unique on the server.
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2012-12-09 07:54:58 +01:00
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func NewChannel(s *Server, name string) *Channel {
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2013-06-03 01:53:06 +02:00
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commands := make(chan ChannelCommand)
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replies := make(chan Reply)
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2012-12-15 23:34:20 +01:00
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channel := &Channel{
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banList: make([]UserMask, 0),
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commands: commands,
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members: make(ClientSet),
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mutex: &sync.Mutex{},
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name: name,
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2012-12-15 23:34:20 +01:00
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replies: replies,
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server: s,
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}
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2012-12-15 23:34:20 +01:00
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go channel.receiveCommands(commands)
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2013-05-26 22:28:22 +02:00
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go channel.receiveReplies(replies)
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2012-12-15 23:34:20 +01:00
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return channel
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2012-12-09 07:54:58 +01:00
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}
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2014-02-13 06:04:50 +01:00
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func (channel *Channel) Destroy() {
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if channel.destroyed {
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return
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2014-02-09 17:48:11 +01:00
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}
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2014-02-13 06:04:50 +01:00
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channel.destroyed = true
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2014-02-14 17:57:17 +01:00
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channel.members = make(ClientSet)
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channel.server.channels.Remove(channel)
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2014-02-09 17:48:11 +01:00
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}
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2014-02-13 18:35:59 +01:00
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func (channel *Channel) Command(command ChannelCommand) {
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channel.commands <- command
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}
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2014-02-13 06:04:50 +01:00
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func (channel *Channel) Reply(replies ...Reply) {
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2014-02-12 00:44:58 +01:00
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for _, reply := range replies {
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channel.replies <- reply
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}
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2014-02-09 17:48:11 +01:00
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}
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2013-05-26 22:28:22 +02:00
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func (channel *Channel) receiveCommands(commands <-chan ChannelCommand) {
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for command := range commands {
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2014-02-14 17:57:17 +01:00
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if channel.destroyed {
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if DEBUG_CHANNEL {
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log.Printf("%s → %s %s dropped", command.Source(), channel, command)
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}
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continue
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}
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2013-05-26 22:28:22 +02:00
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if DEBUG_CHANNEL {
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2014-02-11 23:32:17 +01:00
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log.Printf("%s → %s %s", command.Source(), channel, command)
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2013-05-26 22:28:22 +02:00
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}
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command.HandleChannel(channel)
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}
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}
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2013-05-12 20:20:55 +02:00
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func (channel *Channel) receiveReplies(replies <-chan Reply) {
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2012-12-15 23:34:20 +01:00
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for reply := range replies {
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2014-02-14 17:57:17 +01:00
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if channel.destroyed {
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if DEBUG_CHANNEL {
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log.Printf("%s ← %s %s dropped", channel, reply.Source(), reply)
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}
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continue
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}
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2013-05-12 03:28:18 +02:00
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if DEBUG_CHANNEL {
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2014-02-11 23:32:17 +01:00
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log.Printf("%s ← %s %s", channel, reply.Source(), reply)
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}
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channel.mutex.Lock()
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for client := range channel.members {
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if reply.Source() != Identifier(client) {
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client.Reply(reply)
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}
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2012-12-09 07:54:58 +01:00
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}
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2014-02-14 17:42:56 +01:00
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channel.mutex.Unlock()
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2012-12-09 07:54:58 +01:00
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}
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}
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2012-12-09 21:51:50 +01:00
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2013-05-12 20:20:55 +02:00
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func (channel *Channel) IsEmpty() bool {
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return len(channel.members) == 0
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2012-12-10 06:46:22 +01:00
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}
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2012-12-17 04:13:53 +01:00
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func (channel *Channel) GetTopic(replier Replier) {
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if channel.topic == "" {
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2014-02-09 17:48:11 +01:00
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replier.Reply(RplNoTopic(channel))
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2012-12-17 04:13:53 +01:00
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return
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}
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2014-02-09 17:48:11 +01:00
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replier.Reply(RplTopic(channel))
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2012-12-17 04:13:53 +01:00
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}
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2013-06-03 07:07:50 +02:00
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func (channel *Channel) GetUsers(replier Replier) {
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2014-02-09 17:48:11 +01:00
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replier.Reply(NewNamesReply(channel))
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2013-06-03 07:07:50 +02:00
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}
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2014-02-10 04:59:59 +01:00
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func (channel *Channel) ClientIsOperator(client *Client) bool {
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// TODO client-channel relations
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return false
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}
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2014-02-05 04:28:24 +01:00
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func (channel *Channel) Nicks() []string {
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nicks := make([]string, len(channel.members))
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i := 0
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for client := range channel.members {
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nicks[i] = client.Nick()
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i += 1
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}
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return nicks
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}
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2013-05-12 03:28:18 +02:00
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func (channel *Channel) Id() string {
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2012-12-17 04:13:53 +01:00
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return channel.name
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}
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2013-06-03 07:07:50 +02:00
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func (channel *Channel) Nick() string {
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return channel.name
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}
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2013-05-12 03:28:18 +02:00
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func (channel *Channel) String() string {
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return channel.Id()
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}
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2014-02-09 03:14:39 +01:00
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// <mode> <mode params>
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2014-02-09 08:33:56 +01:00
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func (channel *Channel) ModeString() (str string) {
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if channel.noOutside {
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str += NoOutside.String()
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}
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2014-02-09 17:53:06 +01:00
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if len(str) > 0 {
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str = "+" + str
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}
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2014-02-09 08:33:56 +01:00
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return
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2014-02-09 03:14:39 +01:00
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}
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2014-02-05 04:28:24 +01:00
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func (channel *Channel) Join(client *Client) {
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2014-02-14 18:00:49 +01:00
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channel.mutex.Lock()
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2014-02-09 08:15:05 +01:00
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channel.members.Add(client)
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2014-02-14 18:00:49 +01:00
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channel.mutex.Unlock()
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2014-02-09 08:15:05 +01:00
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client.channels.Add(channel)
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2014-02-09 02:53:06 +01:00
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reply := RplJoin(client, channel)
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2014-02-09 17:48:11 +01:00
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client.Reply(reply)
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channel.Reply(reply)
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2014-02-05 04:28:24 +01:00
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channel.GetTopic(client)
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channel.GetUsers(client)
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}
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2012-12-09 21:51:50 +01:00
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//
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2012-12-15 23:34:20 +01:00
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// commands
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2012-12-09 21:51:50 +01:00
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//
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2012-12-09 07:54:58 +01:00
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2012-12-17 04:13:53 +01:00
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func (m *JoinCommand) HandleChannel(channel *Channel) {
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2012-12-15 23:34:20 +01:00
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client := m.Client()
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2012-12-17 04:13:53 +01:00
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if channel.key != m.channels[channel.name] {
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2014-02-09 17:48:11 +01:00
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client.Reply(ErrBadChannelKey(channel))
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2012-12-09 07:54:58 +01:00
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return
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}
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2014-02-05 04:28:24 +01:00
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channel.Join(client)
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2012-12-09 07:54:58 +01:00
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}
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2012-12-17 04:13:53 +01:00
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func (m *PartCommand) HandleChannel(channel *Channel) {
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2014-02-09 02:53:06 +01:00
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client := m.Client()
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2012-12-15 23:34:20 +01:00
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2014-02-09 08:15:05 +01:00
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if !channel.members.Has(client) {
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2014-02-09 17:48:11 +01:00
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client.Reply(ErrNotOnChannel(channel))
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2012-12-09 07:54:58 +01:00
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return
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}
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2014-02-09 02:53:06 +01:00
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reply := RplPart(client, channel, m.Message())
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2014-02-09 17:48:11 +01:00
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client.Reply(reply)
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channel.Reply(reply)
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2012-12-09 19:15:01 +01:00
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2014-02-09 08:15:05 +01:00
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channel.members.Remove(client)
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client.channels.Remove(channel)
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2012-12-13 08:27:17 +01:00
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2014-02-09 02:53:06 +01:00
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// TODO persistent channels
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if channel.IsEmpty() {
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2014-02-13 06:04:50 +01:00
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channel.Destroy()
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2012-12-13 08:27:17 +01:00
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}
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2012-12-09 07:54:58 +01:00
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}
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2012-12-17 04:13:53 +01:00
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func (m *TopicCommand) HandleChannel(channel *Channel) {
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2014-02-05 04:28:24 +01:00
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client := m.Client()
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2012-12-17 04:13:53 +01:00
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2014-02-09 08:15:05 +01:00
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if !channel.members.Has(client) {
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2014-02-09 17:48:11 +01:00
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client.Reply(ErrNotOnChannel(channel))
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2012-12-09 07:54:58 +01:00
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return
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}
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2014-02-13 03:14:19 +01:00
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if m.setTopic {
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channel.topic = m.topic
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2014-02-05 04:28:24 +01:00
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channel.GetTopic(client)
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2014-02-13 03:14:19 +01:00
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reply := RplTopicMsg(client, channel)
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client.Reply(reply)
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channel.Reply(reply)
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2012-12-09 07:54:58 +01:00
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return
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}
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2014-02-13 03:14:19 +01:00
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channel.GetTopic(client)
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return
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2012-12-15 23:34:20 +01:00
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}
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2012-12-17 04:13:53 +01:00
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func (m *PrivMsgCommand) HandleChannel(channel *Channel) {
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2014-02-09 08:33:56 +01:00
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client := m.Client()
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if channel.noOutside && !channel.members.Has(client) {
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2014-02-09 17:48:11 +01:00
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client.Reply(ErrCannotSendToChan(channel))
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2014-02-09 08:33:56 +01:00
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return
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}
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2014-02-09 17:48:11 +01:00
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channel.Reply(RplPrivMsg(client, channel, m.message))
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2012-12-09 07:54:58 +01:00
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}
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2014-02-09 07:06:10 +01:00
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func (msg *ChannelModeCommand) HandleChannel(channel *Channel) {
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client := msg.Client()
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for _, modeOp := range msg.modeOps {
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switch modeOp.mode {
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case BanMask:
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// TODO add/remove
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for _, banMask := range channel.banList {
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2014-02-09 17:48:11 +01:00
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client.Reply(RplBanList(channel, banMask))
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2014-02-09 07:06:10 +01:00
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}
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2014-02-09 17:48:11 +01:00
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client.Reply(RplEndOfBanList(channel))
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2014-02-09 08:33:56 +01:00
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case NoOutside:
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2014-02-10 04:59:59 +01:00
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if channel.ClientIsOperator(client) {
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switch modeOp.op {
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case Add:
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channel.noOutside = true
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case Remove:
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channel.noOutside = false
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}
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} else {
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client.Reply(ErrChanOPrivIsNeeded(channel))
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2014-02-09 08:33:56 +01:00
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}
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2014-02-09 07:06:10 +01:00
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}
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}
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2014-02-09 17:48:11 +01:00
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client.Reply(RplChannelModeIs(channel))
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2014-02-09 07:06:10 +01:00
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}
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2014-02-12 02:11:59 +01:00
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func (m *NoticeCommand) HandleChannel(channel *Channel) {
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client := m.Client()
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if channel.noOutside && !channel.members.Has(client) {
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client.Reply(ErrCannotSendToChan(channel))
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return
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}
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channel.Reply(RplNotice(client, channel, m.message))
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}
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