remove all multiuser support, all goroutines and all channels
--HG-- branch : nmdc-ircfrontend
This commit is contained in:
.
parent
be5715a562
commit
46114809bd
162
client.go
162
client.go
@ -1,21 +1,15 @@
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package main
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import (
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"bytes"
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"fmt"
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"io"
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"net"
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"strings"
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"time"
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)
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type Client struct {
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server *Server
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connection net.Conn
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signalChan chan signalCode
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outputChan chan string
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nick string
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key string
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registered bool
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connected bool
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operator bool
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@ -30,7 +24,7 @@ func (c *Client) joinChannel(channelName string) {
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}
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channel := c.server.channel
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if _, inChannel := channel.clientMap[c.key]; inChannel {
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if _, inChannel := channel.clientMap[c.nick]; inChannel {
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//Client is already in the channel, do nothing
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return
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}
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@ -53,7 +47,7 @@ func (c *Client) joinChannel(channelName string) {
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for _, client := range channel.clientMap {
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prefix := ""
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if mode, exists := channel.modeMap[client.key]; exists {
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if mode, exists := channel.modeMap[client.nick]; exists {
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prefix = mode.Prefix()
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}
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@ -74,7 +68,6 @@ func (c *Client) joinChannel(channelName string) {
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func (c *Client) disconnect() {
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c.connected = false
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c.signalChan <- signalStop
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}
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//Send a reply to a user with the code specified
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@ -85,153 +78,76 @@ func (c *Client) reply(code replyCode, args ...string) {
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switch code {
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case rplWelcome:
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c.outputChan <- fmt.Sprintf(":%s 001 %s :Welcome to %s", c.server.name, c.nick, c.server.name)
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c.write(fmt.Sprintf(":%s 001 %s :Welcome to %s", c.server.name, c.nick, c.server.name))
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case rplJoin:
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c.outputChan <- fmt.Sprintf(":%s JOIN %s", args[0], args[1])
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c.write(fmt.Sprintf(":%s JOIN %s", args[0], args[1]))
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case rplPart:
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c.outputChan <- fmt.Sprintf(":%s PART %s %s", args[0], args[1], args[2])
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c.write(fmt.Sprintf(":%s PART %s %s", args[0], args[1], args[2]))
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case rplTopic:
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c.outputChan <- fmt.Sprintf(":%s 332 %s %s :%s", c.server.name, c.nick, args[0], args[1])
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c.write(fmt.Sprintf(":%s 332 %s %s :%s", c.server.name, c.nick, args[0], args[1]))
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case rplNoTopic:
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c.outputChan <- fmt.Sprintf(":%s 331 %s %s :No topic is set", c.server.name, c.nick, args[0])
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c.write(fmt.Sprintf(":%s 331 %s %s :No topic is set", c.server.name, c.nick, args[0]))
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case rplNames:
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c.outputChan <- fmt.Sprintf(":%s 353 %s = %s :%s", c.server.name, c.nick, args[0], args[1])
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c.write(fmt.Sprintf(":%s 353 %s = %s :%s", c.server.name, c.nick, args[0], args[1]))
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case rplEndOfNames:
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c.outputChan <- fmt.Sprintf(":%s 366 %s %s :End of NAMES list", c.server.name, c.nick, args[0])
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c.write(fmt.Sprintf(":%s 366 %s %s :End of NAMES list", c.server.name, c.nick, args[0]))
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case rplNickChange:
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c.outputChan <- fmt.Sprintf(":%s NICK %s", args[0], args[1])
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c.write(fmt.Sprintf(":%s NICK %s", args[0], args[1]))
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case rplKill:
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c.outputChan <- fmt.Sprintf(":%s KILL %s A %s", args[0], c.nick, args[1])
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c.write(fmt.Sprintf(":%s KILL %s A %s", args[0], c.nick, args[1]))
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case rplMsg:
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c.outputChan <- fmt.Sprintf(":%s PRIVMSG %s %s", args[0], args[1], args[2])
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c.write(fmt.Sprintf(":%s PRIVMSG %s %s", args[0], args[1], args[2]))
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case rplList:
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c.outputChan <- fmt.Sprintf(":%s 322 %s %s", c.server.name, c.nick, args[0])
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c.write(fmt.Sprintf(":%s 322 %s %s", c.server.name, c.nick, args[0]))
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case rplListEnd:
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c.outputChan <- fmt.Sprintf(":%s 323 %s", c.server.name, c.nick)
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c.write(fmt.Sprintf(":%s 323 %s", c.server.name, c.nick))
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case rplOper:
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c.outputChan <- fmt.Sprintf(":%s 381 %s :You are now an operator", c.server.name, c.nick)
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c.write(fmt.Sprintf(":%s 381 %s :You are now an operator", c.server.name, c.nick))
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case rplChannelModeIs:
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c.outputChan <- fmt.Sprintf(":%s 324 %s %s %s %s", c.server.name, c.nick, args[0], args[1], args[2])
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c.write(fmt.Sprintf(":%s 324 %s %s %s %s", c.server.name, c.nick, args[0], args[1], args[2]))
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case rplKick:
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c.outputChan <- fmt.Sprintf(":%s KICK %s %s %s", args[0], args[1], args[2], args[3])
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c.write(fmt.Sprintf(":%s KICK %s %s %s", args[0], args[1], args[2], args[3]))
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case rplInfo:
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c.outputChan <- fmt.Sprintf(":%s 371 %s :%s", c.server.name, c.nick, args[0])
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c.write(fmt.Sprintf(":%s 371 %s :%s", c.server.name, c.nick, args[0]))
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case rplVersion:
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c.outputChan <- fmt.Sprintf(":%s 351 %s %s", c.server.name, c.nick, args[0])
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c.write(fmt.Sprintf(":%s 351 %s %s", c.server.name, c.nick, args[0]))
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case rplMOTDStart:
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c.outputChan <- fmt.Sprintf(":%s 375 %s :- Message of the day - ", c.server.name, c.nick)
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c.write(fmt.Sprintf(":%s 375 %s :- Message of the day - ", c.server.name, c.nick))
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case rplMOTD:
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c.outputChan <- fmt.Sprintf(":%s 372 %s :- %s", c.server.name, c.nick, args[0])
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c.write(fmt.Sprintf(":%s 372 %s :- %s", c.server.name, c.nick, args[0]))
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case rplEndOfMOTD:
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c.outputChan <- fmt.Sprintf(":%s 376 %s :End of MOTD Command", c.server.name, c.nick)
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c.write(fmt.Sprintf(":%s 376 %s :End of MOTD Command", c.server.name, c.nick))
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case rplPong:
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c.outputChan <- fmt.Sprintf(":%s PONG %s %s", c.server.name, c.nick, c.server.name)
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c.write(fmt.Sprintf(":%s PONG %s %s", c.server.name, c.nick, c.server.name))
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case errMoreArgs:
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c.outputChan <- fmt.Sprintf(":%s 461 %s :Not enough params", c.server.name, c.nick)
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c.write(fmt.Sprintf(":%s 461 %s :Not enough params", c.server.name, c.nick))
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case errNoNick:
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c.outputChan <- fmt.Sprintf(":%s 431 %s :No nickname given", c.server.name, c.nick)
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c.write(fmt.Sprintf(":%s 431 %s :No nickname given", c.server.name, c.nick))
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case errInvalidNick:
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c.outputChan <- fmt.Sprintf(":%s 432 %s %s :Erronenous nickname", c.server.name, c.nick, args[0])
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c.write(fmt.Sprintf(":%s 432 %s %s :Erronenous nickname", c.server.name, c.nick, args[0]))
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case errNickInUse:
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c.outputChan <- fmt.Sprintf(":%s 433 %s %s :Nick already in use", c.server.name, c.nick, args[0])
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c.write(fmt.Sprintf(":%s 433 %s %s :Nick already in use", c.server.name, c.nick, args[0]))
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case errAlreadyReg:
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c.outputChan <- fmt.Sprintf(":%s 462 :You need a valid nick first", c.server.name)
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c.write(fmt.Sprintf(":%s 462 :You need a valid nick first", c.server.name))
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case errNoSuchNick:
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c.outputChan <- fmt.Sprintf(":%s 401 %s %s :No such nick/channel", c.server.name, c.nick, args[0])
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c.write(fmt.Sprintf(":%s 401 %s %s :No such nick/channel", c.server.name, c.nick, args[0]))
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case errUnknownCommand:
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c.outputChan <- fmt.Sprintf(":%s 421 %s %s :Unknown command", c.server.name, c.nick, args[0])
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c.write(fmt.Sprintf(":%s 421 %s %s :Unknown command", c.server.name, c.nick, args[0]))
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case errNotReg:
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c.outputChan <- fmt.Sprintf(":%s 451 :You have not registered", c.server.name)
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c.write(fmt.Sprintf(":%s 451 :You have not registered", c.server.name))
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case errPassword:
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c.outputChan <- fmt.Sprintf(":%s 464 %s :Error, password incorrect", c.server.name, c.nick)
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c.write(fmt.Sprintf(":%s 464 %s :Error, password incorrect", c.server.name, c.nick))
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case errNoPriv:
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c.outputChan <- fmt.Sprintf(":%s 481 %s :Permission denied", c.server.name, c.nick)
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c.write(fmt.Sprintf(":%s 481 %s :Permission denied", c.server.name, c.nick))
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case errCannotSend:
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c.outputChan <- fmt.Sprintf(":%s 404 %s %s :Cannot send to channel", c.server.name, c.nick, args[0])
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c.write(fmt.Sprintf(":%s 404 %s %s :Cannot send to channel", c.server.name, c.nick, args[0]))
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}
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}
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func (c *Client) clientThread() {
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readSignalChan := make(chan signalCode, 3)
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writeSignalChan := make(chan signalCode, 3)
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writeChan := make(chan string, 100)
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c.server.eventChan <- Event{client: c, event: connected}
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go c.readThread(readSignalChan)
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go c.writeThread(writeSignalChan, writeChan)
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defer func() {
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// Implicit part from all channels
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// FIXME also drop the upstream connection
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c.connection.Close()
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}()
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for {
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select {
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case signal := <-c.signalChan:
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if signal == signalStop {
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readSignalChan <- signalStop
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writeSignalChan <- signalStop
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return
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}
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case line := <-c.outputChan:
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select {
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case writeChan <- line:
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continue
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default:
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c.disconnect()
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}
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}
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}
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}
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func (c *Client) readThread(signalChan chan signalCode) {
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for {
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select {
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case signal := <-signalChan:
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if signal == signalStop {
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return
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}
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default:
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c.connection.SetReadDeadline(time.Now().Add(time.Second * 3))
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buf := make([]byte, 512)
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ln, err := c.connection.Read(buf)
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if err != nil {
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if err == io.EOF {
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c.disconnect()
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return
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}
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continue
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}
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rawLines := buf[:ln]
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rawLines = bytes.Replace(rawLines, []byte("\r\n"), []byte("\n"), -1)
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rawLines = bytes.Replace(rawLines, []byte("\r"), []byte("\n"), -1)
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lines := bytes.Split(rawLines, []byte("\n"))
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for _, line := range lines {
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if len(line) > 0 {
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c.server.eventChan <- Event{client: c, event: command, input: string(line)}
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}
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}
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}
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}
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}
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func (c *Client) writeThread(signalChan chan signalCode, outputChan chan string) {
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for {
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select {
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case signal := <-signalChan:
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if signal == signalStop {
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return
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}
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case output := <-outputChan:
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c.connection.SetWriteDeadline(time.Now().Add(time.Second * 30))
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if _, err := fmt.Fprintf(c.connection, "%s\r\n", output); err != nil {
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c.disconnect()
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return
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}
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}
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func (c *Client) write(output string) {
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c.connection.SetWriteDeadline(time.Now().Add(time.Second * 30))
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if _, err := fmt.Fprintf(c.connection, "%s\r\n", output); err != nil {
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c.disconnect()
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return
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}
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}
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7
main.go
7
main.go
@ -16,10 +16,6 @@ var (
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func main() {
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flag.Parse()
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if len(*serverName) == 0 {
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log.Println("Please specify the -servername parameter.")
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return
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}
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listener, err := net.Listen("tcp", *ircAddress)
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if err != nil {
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@ -41,7 +37,6 @@ func main() {
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// from the irc client
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server := NewServer(*serverName, libnmdc.HubAddress(*dcAddress))
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go server.Run()
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server.HandleConnection(conn)
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go server.RunClient(conn)
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}
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}
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97
server.go
97
server.go
@ -1,10 +1,13 @@
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package main
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import (
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"bytes"
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"fmt"
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"io"
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"libnmdc"
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"net"
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"strings"
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"time"
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)
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type Server struct {
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@ -31,57 +34,67 @@ func NewServer(name string, upstream libnmdc.HubAddress) *Server {
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}
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}
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func (s *Server) Run() {
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for event := range s.eventChan {
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s.handleEvent(event)
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}
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}
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func (s *Server) RunClient(conn net.Conn) {
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func (s *Server) HandleConnection(conn net.Conn) {
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client := &Client{server: s,
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s.client = &Client{
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connection: conn,
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outputChan: make(chan string),
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signalChan: make(chan signalCode, 3),
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connected: true,
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}
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go client.clientThread()
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// Send the connection handshake
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s.client.reply(rplMOTDStart)
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motd := s.motd
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for len(motd) > 80 {
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s.client.reply(rplMOTD, motd[:80])
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motd = motd[80:]
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}
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if len(motd) > 0 {
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s.client.reply(rplMOTD, motd)
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}
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s.client.reply(rplEndOfMOTD)
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// Read loop
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for {
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s.client.connection.SetReadDeadline(time.Now().Add(time.Second * CLIENT_READ_TIMEOUT_SEC))
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buf := make([]byte, CLIENT_READ_BUFFSIZE)
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ln, err := s.client.connection.Read(buf)
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if err != nil {
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if err == io.EOF {
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s.client.disconnect()
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return // FIXME cleanup
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}
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continue
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}
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rawLines := buf[:ln]
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rawLines = bytes.Replace(rawLines, []byte("\r\n"), []byte("\n"), -1)
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rawLines = bytes.Replace(rawLines, []byte("\r"), []byte("\n"), -1)
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lines := bytes.Split(rawLines, []byte("\n"))
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for _, line := range lines {
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if len(line) > 0 {
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s.handleCommandEvent(string(line))
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}
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}
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}
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}
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func (s *Server) handleEvent(e Event) {
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func (s *Server) handleCommandEvent(input string) {
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switch e.event {
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case connected:
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//Client connected
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e.client.reply(rplMOTDStart)
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motd := s.motd
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for len(motd) > 80 {
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e.client.reply(rplMOTD, motd[:80])
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motd = motd[80:]
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}
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if len(motd) > 0 {
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e.client.reply(rplMOTD, motd)
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}
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e.client.reply(rplEndOfMOTD)
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case disconnected:
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//Client disconnected
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case command:
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//Client send a command
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fields := strings.Fields(e.input)
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if len(fields) < 1 {
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return
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}
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if strings.HasPrefix(fields[0], ":") {
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fields = fields[1:]
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}
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command := strings.ToUpper(fields[0])
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args := fields[1:]
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s.handleCommand(e.client, command, args)
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//Client send a command
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fields := strings.Fields(input)
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if len(fields) < 1 {
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return
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}
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if strings.HasPrefix(fields[0], ":") {
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fields = fields[1:]
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}
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command := strings.ToUpper(fields[0])
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args := fields[1:]
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s.handleCommand(s.client, command, args)
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}
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func (s *Server) handleCommand(client *Client, command string, args []string) {
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@ -10,7 +10,9 @@ const (
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BLESSED_CHANNEL = "#chat" // must be lowercase
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BLESSED_CHANNEL_MODE = "n" // means that you have to be in the channel to chat, but that's it
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NICKS_PER_PROTOMSG = 128 //The capacity sets the max number of nicks to send per message
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NICKS_PER_PROTOMSG = 128 //The capacity sets the max number of nicks to send per message
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CLIENT_READ_BUFFSIZE = 512
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CLIENT_READ_TIMEOUT_SEC = 3
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)
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var (
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@ -21,8 +23,7 @@ var (
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type eventType int
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const (
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connected eventType = iota
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disconnected
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disconnected eventType = iota
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command
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)
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