/* $Id: util_tftp.mi,v 8.20 2000/07/30 20:14:34 ksb Exp $
 * BSD tftp code copied for mkcmd use by ksb
 */

/* convert a tftp error code in to a text message			(bsd)
 */
static char *
tftp_error(iError)
int iError;
{
	static char *apcErrs[] = { /* from the RFC */
		"Undefined error code",
		"File not found",
		"Access violation",
		"Disk full or allocation exceeded",
		"Illegal TFTP operation",
		"Unknown transfer ID",
		"File already exists",
		"No such user",			/* 7 last one */
		(char *)0
	};

	if (iError >= 0 && iError < sizeof(apcErrs)/sizeof(apcErrs[0])) {
		return apcErrs[iError];
	}
	return (char *)0;
}

%@if "TFTP_DEBUG"
static void tftp_packet(TFTP_PACKET *pTP, int iLen, const char *pcWho);
%@else
#define	tftp_packet(MpTP, MiLen, Mpc)	/* no-op */(void)0
%@endif
static int tftp_sync(int sBad);
static int tftp_request(TFTP_PACKET *pTPMake, int usRequest, const char *pcName, const char *pcMode);
static int tftp_nak(TFTP_PACKET *pTPMake, int iError);
static int tftp_ack(TFTP_PACKET *pTPMake, int usBlock);
static int tftp_pack(TFTP_PACKET *pTPMake, const char *pcMode, FILE *fpFrom);
static int tftp_hunk(TFTP_PACKET *pTPMake, const char *pcMode, FILE *fpFrom);
static int tftp_unpack(TFTP_PACKET *pTPMade, int iLen, const char *pcMode, FILE *fpTo);
static char *tftp_ram(TFTP_PACKET *pTPMade, int iLen, const char *pcMode);
static char *tftp_output(char *pcMode, void *pvData, int iLen);
static void tftp_forget(char *pcNewMode);