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- package irc
-
- import (
- "bufio"
- "io"
- "net"
- )
-
- const (
- R = '→'
- W = '←'
- EOF = ""
- )
-
- type Socket struct {
- conn net.Conn
- writer *bufio.Writer
- }
-
- func NewSocket(conn net.Conn, commands chan<- Command) *Socket {
- socket := &Socket{
- conn: conn,
- writer: bufio.NewWriter(conn),
- }
-
- go socket.readLines(commands)
-
- return socket
- }
-
- func (socket *Socket) String() string {
- return socket.conn.RemoteAddr().String()
- }
-
- func (socket *Socket) Close() {
- socket.conn.Close()
- Log.debug.Printf("%s closed", socket)
- }
-
- func (socket *Socket) readLines(commands chan<- Command) {
- commands <- NewProxyCommand(AddrLookupHostname(socket.conn.RemoteAddr()))
-
- scanner := bufio.NewScanner(socket.conn)
- for scanner.Scan() {
- line := scanner.Text()
- if len(line) == 0 {
- continue
- }
- Log.debug.Printf("%s → %s", socket, line)
-
- msg, err := ParseCommand(line)
- if err != nil {
- // TODO error messaging to client
- continue
- }
- commands <- msg
- }
-
- if err := scanner.Err(); err != nil {
- Log.debug.Printf("%s error: %s", socket, err)
- }
-
- commands <- NewQuitCommand("connection closed")
-
- close(commands)
- }
-
- func (socket *Socket) Write(line string) (err error) {
- if _, err = socket.writer.WriteString(line); socket.isError(err, W) {
- return
- }
-
- if _, err = socket.writer.WriteString(CRLF); socket.isError(err, W) {
- return
- }
-
- go socket.flush()
-
- Log.debug.Printf("%s ← %s", socket, line)
- return
- }
-
- func (socket *Socket) flush() {
- socket.isError(socket.writer.Flush(), W)
- }
-
- func (socket *Socket) isError(err error, dir rune) bool {
- if err != nil {
- if err != io.EOF {
- Log.debug.Printf("%s %c error: %s", socket, dir, err)
- }
- return true
- }
- return false
- }
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