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server.go
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server.go
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package main
import (
"log"
"strings"
)
const (
RPL_NAMREPLY = "353"
)
var (
INFO_CMDS = []string{"001", "002", "003", "004", "372", "NOTICE"}
)
type Server struct {
nick string
external *ExternalManager
internal *InternalManager
fromServer chan *Line
fromUser chan Message
}
func NewServer(host, port string) *Server {
fromServer := make(chan *Line)
fromUser := make(chan Message)
// Socket connections from client programs
internal := NewInternalManager(host, port, fromUser)
// Socket connections to IRC servers
external := NewExternalManager(fromServer)
log.Println("Listening for internal connection on " + host + ":" + port)
return &Server{
"",
external,
internal,
fromServer,
fromUser}
}
// Main loop
func (self *Server) Run() {
defer logPanic()
go self.internal.Run()
for {
select {
case serverLine := <-self.fromServer:
self.onServer(serverLine)
case userMessage := <-self.fromUser:
self.onUser(userMessage)
}
}
}
func (self *Server) Close() error {
self.internal.Close()
return self.external.Close()
}
// Act on server messages
func (self *Server) onServer(line *Line) {
if isInfoCommand(line.Command) {
log.Println(line.Content)
}
isMsg := (line.Command == "PRIVMSG")
isPrivate := isMsg && (line.User == line.Channel)
if isPrivate && !self.internal.HasChannel(line.Channel) {
self.internal.lastPrivate = []byte(line.AsJson())
//go self.openPrivate(line.Network, line.User)
self.internal.WriteFirst(line.Network, line.AsJson())
} else if len(line.Channel) == 0 && !isChannelRequired(line.Command) {
self.internal.WriteAll(line.Network, line.AsJson())
} else {
self.internal.WriteChannel(line.Network, line.Channel, line.AsJson())
}
}
// Act on user input
func (self *Server) onUser(message Message) {
var cmd, content string
if isCommand(message.content) {
parts := strings.SplitN(message.content[1:], " ", 2)
cmd = parts[0]
if len(parts) == 2 {
content = parts[1]
}
if cmd == "pw" {
self.external.Identify(message.network, content)
} else if cmd == "me" {
self.external.SendAction(message.network, message.channel, content)
} else if cmd == "nick" {
newNick := content
self.nick = newNick
self.internal.SetNick(message.network, newNick)
self.external.doCommand(message.network, message.content)
} else if cmd == "connect" {
// Connect to a remote IRC server
self.external.Connect(content)
} else {
self.external.doCommand(message.network, message.content)
}
} else {
self.external.SendMessage(message.network, message.channel, message.content)
}
}
// Is 'content' an IRC command?
func isCommand(content string) bool {
return len(content) > 1 && content[0] == '/'
}
// Is 'command' an IRC information command?
func isInfoCommand(command string) bool {
for _, cmd := range INFO_CMDS {
if cmd == command {
return true
}
}
return false
}
// Does command require a channel
func isChannelRequired(command string) bool {
return command == RPL_NAMREPLY
}