#include <sys/cdefs.h>
#ifdef __FBSDID
__FBSDID("$FreeBSD: src/crypto/telnet/telnet/terminal.c,v 1.2.8.2 2002/04/13 10:59:08 markm Exp $");
#endif
#ifndef lint
static const char sccsid[] = "@(#)terminal.c 8.2 (Berkeley) 2/16/95";
#endif
#include <arpa/telnet.h>
#include <sys/types.h>
#include "ring.h"
#include "externs.h"
#include "types.h"
#ifdef ENCRYPTION
#include <libtelnet/encrypt.h>
#endif
Ring ttyoring, ttyiring;
unsigned char ttyobuf[2*BUFSIZ], ttyibuf[BUFSIZ];
int termdata;
#ifdef USE_TERMIO
# ifndef VDISCARD
cc_t termFlushChar;
# endif
# ifndef VLNEXT
cc_t termLiteralNextChar;
# endif
# ifndef VSUSP
cc_t termSuspChar;
# endif
# ifndef VWERASE
cc_t termWerasChar;
# endif
# ifndef VREPRINT
cc_t termRprntChar;
# endif
# ifndef VSTART
cc_t termStartChar;
# endif
# ifndef VSTOP
cc_t termStopChar;
# endif
# ifndef VEOL
cc_t termForw1Char;
# endif
# ifndef VEOL2
cc_t termForw2Char;
# endif
# ifndef VSTATUS
cc_t termAytChar;
# endif
#else
cc_t termForw2Char;
cc_t termAytChar;
#endif
void
init_terminal(void)
{
if (ring_init(&ttyoring, ttyobuf, sizeof ttyobuf) != 1) {
exit(1);
}
if (ring_init(&ttyiring, ttyibuf, sizeof ttyibuf) != 1) {
exit(1);
}
autoflush = TerminalAutoFlush();
}
int
ttyflush(int drop)
{
int n, n0, n1;
n0 = ring_full_count(&ttyoring);
if ((n1 = n = ring_full_consecutive(&ttyoring)) > 0) {
if (drop) {
TerminalFlushOutput();
} else {
n = TerminalWrite(ttyoring.consume, n);
}
}
if (n > 0) {
if (termdata && n) {
Dump('>', ttyoring.consume, n);
}
if (n1 == n && n0 > n) {
n1 = n0 - n;
if (!drop)
n1 = TerminalWrite(ttyoring.bottom, n1);
if (n1 > 0)
n += n1;
}
ring_consumed(&ttyoring, n);
}
if (n < 0)
return -1;
if (n == n0) {
if (n0)
return -1;
return 0;
}
return n0 - n + 1;
}
int
getconnmode(void)
{
extern int linemode;
int mode = 0;
#ifdef KLUDGELINEMODE
extern int kludgelinemode;
#endif
if (my_want_state_is_dont(TELOPT_ECHO))
mode |= MODE_ECHO;
if (localflow)
mode |= MODE_FLOW;
if (my_want_state_is_will(TELOPT_BINARY))
mode |= MODE_INBIN;
if (his_want_state_is_will(TELOPT_BINARY))
mode |= MODE_OUTBIN;
#ifdef KLUDGELINEMODE
if (kludgelinemode) {
if (my_want_state_is_dont(TELOPT_SGA)) {
mode |= (MODE_TRAPSIG|MODE_EDIT);
if (dontlecho && (clocks.echotoggle > clocks.modenegotiated)) {
mode &= ~MODE_ECHO;
}
}
return(mode);
}
#endif
if (my_want_state_is_will(TELOPT_LINEMODE))
mode |= linemode;
return(mode);
}
void
setconnmode(int force)
{
#ifdef ENCRYPTION
static int enc_passwd = 0;
#endif
int newmode;
newmode = getconnmode()|(force?MODE_FORCE:0);
TerminalNewMode(newmode);
#ifdef ENCRYPTION
if ((newmode & (MODE_ECHO|MODE_EDIT)) == MODE_EDIT) {
if (my_want_state_is_will(TELOPT_ENCRYPT)
&& (enc_passwd == 0) && !encrypt_output) {
encrypt_request_start(0, 0);
enc_passwd = 1;
}
} else {
if (enc_passwd) {
encrypt_request_end();
enc_passwd = 0;
}
}
#endif
}
void
setcommandmode(void)
{
TerminalNewMode(-1);
}