?? will_txbinary.c
字號:
/* will_txbinary.c - will_txbinary */
#include <sys/types.h>
#include <stdio.h>
#include "telnet.h"
char sndbinary; /* non-zero if TRANSMIT-BINARY */
extern u_char option_cmd;
/*------------------------------------------------------------------------
* will_txbinary - handle TELNET DO/DON'T TRANSMIT-BINARY option
*------------------------------------------------------------------------
*/
/*ARGSUSED*/
int
will_txbinary(rfp, tfp, c)
FILE *rfp, *tfp;
int c;
{
if (sndbinary) {
if (option_cmd == TCDO)
return 0;
} else if (option_cmd == TCDONT)
return 0;
sndbinary = !sndbinary;
(void) putc(TCIAC, rfp);
if (sndbinary)
(void) putc(TCWILL, rfp);
else
(void) putc(TCWONT, rfp);
(void) putc((char)c, rfp);
return 0;
}
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