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package server
import (
"context"
"encoding/binary"
"io"
"log/slog"
"sync"
"golang.org/x/crypto/ssh"
"golang.org/x/term"
)
func (s *Server) serveClient(
ctx context.Context,
conn *ssh.ServerConn,
channel ssh.Channel,
requests <-chan *ssh.Request,
) {
wg := sync.WaitGroup{}
identify := conn.Permissions.ExtraData["identify"].(string)
user := s.chat.NewUser(conn.User(), identify)
t := term.NewTerminal(channel, "[] ")
// Обработка ввода пользователя
wg.Go(func() {
for {
select {
case <-ctx.Done():
return
default:
}
if user.CurrentChan != nil {
t.SetPrompt("[" + user.CurrentChan.Name + "] ")
}
line, err := t.ReadLine()
if err != nil {
s.chat.RemoveUser(user)
if err != io.EOF {
slog.Error("failed read line", slog.Any("err", err))
}
conn.Close()
return
}
if len(line) == 0 {
continue
}
s.chat.Input(ctx, user, line)
}
})
wg.Go(func() {
for req := range requests {
switch req.Type {
case "pty-req":
termLen := req.Payload[3]
w, h := parseDims(req.Payload[termLen+4:])
t.SetSize(w, h)
req.Reply(true, nil)
case "window-change":
w, h := parseDims(req.Payload)
t.SetSize(w, h)
req.Reply(true, nil)
case "shell":
req.Reply(len(req.Payload) == 0, nil)
default:
req.Reply(false, nil)
}
slog.Debug(
"req",
slog.String("type", req.Type),
slog.Bool("want-reply", req.WantReply),
slog.String("payload", string(req.Payload)),
)
}
})
for message := range user.Events {
processUserEvent(message, t, user)
}
}
func parseDims(b []byte) (int, int) {
w := binary.BigEndian.Uint32(b)
h := binary.BigEndian.Uint32(b[4:])
return int(w), int(h)
}
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