156 lines
3.8 KiB
Go
156 lines
3.8 KiB
Go
// written by Daniel Oaks <daniel@danieloaks.net>
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// released under the ISC license
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package gircclient
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import (
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"bufio"
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"crypto/tls"
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"fmt"
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"net"
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"os"
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"strings"
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"github.com/DanielOaks/girc-go/eventmgr"
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"github.com/DanielOaks/girc-go/ircmsg"
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)
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// ServerConnection is a connection to a single server.
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type ServerConnection struct {
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Name string
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Connected bool
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// internal stuff
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connection net.Conn
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eventsIn eventmgr.EventManager
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eventsOut eventmgr.EventManager
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// data we keep track of
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//features ServerFeatures
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//caps ClientCapabilities
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// details users must supply before connection
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Nick string
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InitialUser string
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InitialRealName string
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}
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// Connect connects to the given address.
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func (sc *ServerConnection) Connect(address string, ssl bool, tlsconfig *tls.Config) {
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var conn net.Conn
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var err error
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if ssl {
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conn, err = tls.Dial("tcp", address, tlsconfig)
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} else {
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conn, err = net.Dial("tcp", address)
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}
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if err != nil {
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fmt.Println("Connection error:", err)
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os.Exit(1)
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}
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sc.connection = conn
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sc.Connected = true
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sc.Send(nil, "", "NICK", sc.Nick)
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sc.Send(nil, "", "USER", sc.InitialUser, "0", "*", sc.InitialRealName)
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go sc.receiveLoop()
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}
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// receiveLoop runs a loop of receiving and dispatching new messages.
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func (sc *ServerConnection) receiveLoop() {
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reader := bufio.NewReader(sc.connection)
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for sc.Connected {
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line, err := reader.ReadString('\n')
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if err != nil {
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sc.Connected = false
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break
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}
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line = strings.Trim(line, "\r\n")
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// dispatch raw
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rawInfo := eventmgr.NewInfoMap()
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rawInfo["direction"] = "in"
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rawInfo["data"] = line
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sc.dispatchRawIn(rawInfo)
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// dispatch events
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message, err := ircmsg.ParseLine(line)
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info := eventmgr.NewInfoMap()
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info["tags"] = message.Tags
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info["prefix"] = message.Prefix
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info["command"] = message.Command
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info["params"] = message.Params
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sc.dispatchIn(message.Command, info)
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}
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sc.connection.Close()
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}
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// RegisterEvent registers a new handler for the given event.
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//
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// The standard directions are "in" and "out".
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//
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// 'name' can either be the name of an event, "all", or "raw". Note that "all"
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// will not catch "raw" events, but will catch all others.
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func (sc *ServerConnection) RegisterEvent(direction string, name string, handler eventmgr.HandlerFn, priority int) {
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if direction == "in" || direction == "both" {
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sc.eventsIn.Attach(name, handler, priority)
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}
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if direction == "out" || direction == "both" {
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sc.eventsOut.Attach(name, handler, priority)
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}
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}
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// Shutdown closes the connection to the server.
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func (sc *ServerConnection) Shutdown(message string) {
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sc.Send(nil, "", "QUIT", message)
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sc.Connected = false
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sc.connection.Close()
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}
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// Send sends an IRC message to the server.
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func (sc *ServerConnection) Send(tags *map[string]ircmsg.TagValue, prefix string, command string, params ...string) {
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ircmsg := ircmsg.MakeMessage(tags, prefix, command, params...)
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line, err := ircmsg.Line()
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if err != nil {
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fmt.Println(err)
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os.Exit(1)
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}
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fmt.Fprintf(sc.connection, line)
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// dispatch raw event
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info := eventmgr.NewInfoMap()
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info["direction"] = "out"
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info["data"] = line
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sc.dispatchRawOut(info)
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}
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// dispatchRawIn dispatches raw inbound messages.
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func (sc *ServerConnection) dispatchRawIn(info eventmgr.InfoMap) {
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sc.eventsIn.Dispatch("raw", info)
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}
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// dispatchIn dispatches inbound messages.
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func (sc *ServerConnection) dispatchIn(name string, info eventmgr.InfoMap) {
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sc.eventsIn.Dispatch(name, info)
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sc.eventsIn.Dispatch("all", info)
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}
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// dispatchRawOut dispatches raw outbound messages.
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func (sc *ServerConnection) dispatchRawOut(info eventmgr.InfoMap) {
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sc.eventsOut.Dispatch("raw", info)
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}
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// dispatchOut dispatches outbound messages.
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func (sc *ServerConnection) dispatchOut(name string, info eventmgr.InfoMap) {
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sc.eventsOut.Dispatch(name, info)
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sc.eventsOut.Dispatch("all", info)
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}
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