Function handleSSHConnection

main.go:1299–1555

(connDetails *connections.ConnectionDetails, reqs <-chan *ssh.Request, wg *sync.WaitGroup)

}

func handleSSHConnection(connDetails *connections.ConnectionDetails, reqs <-chan *ssh.Request, wg *sync.WaitGroup) {
	defer wg.Done()

	mudlog.Info("New SSH Connection", "connectionID", connDetails.ConnectionId(), "remoteAddr", connDetails.RemoteAddr().String())

	// Handle SSH channel requests (pty-req, window-change, shell, exec, etc.)
	// We run this in a goroutine so the read loop below can start immediately.
	go func() {
		for req := range reqs {
			switch req.Type {
			case "pty-req":
				// Parse terminal dimensions from the pty-req payload.
				// Payload: string term, uint32 cols, uint32 rows, uint32 width-px, uint32 height-px, string modes
				if len(req.Payload) >= 12 {
					// Skip the terminal name string: 4-byte length prefix + string bytes
					nameLen := int(req.Payload[0])<<24 | int(req.Payload[1])<<16 | int(req.Payload[2])<<8 | int(req.Payload[3])
					offset := 4 + nameLen
					if offset+8 <= len(req.Payload) {
						cols := uint32(req.Payload[offset])<<24 | uint32(req.Payload[offset+1])<<16 | uint32(req.Payload[offset+2])<<8 | uint32(req.Payload[offset+3])
						rows := uint32(req.Payload[offset+4])<<24 | uint32(req.Payload[offset+5])<<16 | uint32(req.Payload[offset+6])<<8 | uint32(req.Payload[offset+7])
						if cols > 0 && rows > 0 {
							cs := connections.GetClientSettings(connDetails.ConnectionId())
							cs.Display.ScreenWidth = cols
							cs.Display.ScreenHeight = rows
							connections.OverwriteClientSettings(connDetails.ConnectionId(), cs)
						}
					}
				}
				if req.WantReply {
					req.Reply(true, nil)
				}
			case "window-change":
				// Payload: uint32 cols, uint32 rows, uint32 width-px, uint32 height-px
				if len(req.Payload) >= 8 {
					cols := uint32(req.Payload[0])<<24 | uint32(req.Payload[1])<<16 | uint32(req.Payload[2])<<8 | uint32(req.Payload[3])
					rows := uint32(req.Payload[4])<<24 | uint32(req.Payload[5])<<16 | uint32(req.Payload[6])<<8 | uint32(req.Payload[7])
					if cols > 0 && rows > 0 {
						cs := connections.GetClientSettings(connDetails.ConnectionId())
						cs.Display.ScreenWidth = cols
						cs.Display.ScreenHeight = rows
						connections.OverwriteClientSettings(connDetails.ConnectionId(), cs)
						connections.NotifyWindowChange(connDetails.ConnectionId(), cols, rows)
					}
				}
				if req.WantReply {
					req.Reply(true, nil)
				}
			case "shell", "exec":
				if req.WantReply {
					req.Reply(true, nil)
				}
			default:
				if req.WantReply {
					req.Reply(false, nil)
				}
			}
		}
	}()