/*
* Send the window size to the server via the magic escape.
* Note: SIGWINCH should be blocked when this is called, lest
* winsize change underneath us and chaos result.
*/
static void
sendwindow(void)
{
char obuf[4 + sizeof (struct winsize)];
struct winsize *wp = (struct winsize *)(void *)(obuf+4);
obuf[0] = -1;
obuf[1] = -1;
obuf[2] = 's';
obuf[3] = 's';
wp->ws_row = htons(winsize.ws_row);
wp->ws_col = htons(winsize.ws_col);
wp->ws_xpixel = htons(winsize.ws_xpixel);
wp->ws_ypixel = htons(winsize.ws_ypixel);
if (deswrite(rem, obuf, sizeof (obuf), 0) < 0)
prf(gettext("Write error to network: %s"), strerror(errno));
}
static int
desrshwrite(int fd, char *buf, int len)
{
return (deswrite(fd, buf, len, writeiv ? 1 : 0));
}
/*
* writer: write to remote: 0 -> line.
* ~. terminate
* ~^Z suspend rlogin process.
* ~^Y suspend rlogin process, but leave reader alone.
*/
static void
writer(void)
{
char c;
int n;
boolean_t bol = B_TRUE; /* beginning of line */
boolean_t local = B_FALSE;
for (;;) {
n = read(STDIN_FILENO, &c, 1);
if (n <= 0) {
if (n == 0)
break;
if (errno == EINTR)
continue;
else {
prf(gettext("Read error from terminal: %s"),
strerror(errno));
break;
}
}
/*
* If we're at the beginning of the line
* and recognize a command character, then
* we echo locally. Otherwise, characters
* are echo'd remotely. If the command
* character is doubled, this acts as a
* force and local echo is suppressed.
*/
if (bol && !nocmdchar) {
bol = B_FALSE;
if (c == cmdchar) {
local = B_TRUE;
continue;
}
} else if (local) {
local = B_FALSE;
if (c == '.' || c == deftc.t_eofc) {
echo(c);
break;
}
if (c == defltc.t_suspc || c == defltc.t_dsuspc) {
bol = B_TRUE;
echo(c);
stop(c);
continue;
}
if (c != cmdchar) {
if (deswrite(rem, &cmdchar, 1, 0) < 0) {
prf(gettext(
"Write error to network: %s"),
strerror(errno));
break;
}
}
}
if ((n = deswrite(rem, &c, 1, 0)) <= 0) {
if (n == 0)
prf(gettext("line gone"));
else
prf(gettext("Write error to network: %s"),
strerror(errno));
break;
}
bol = c == defkill || c == deftc.t_eofc ||
c == deftc.t_intrc || c == defltc.t_suspc ||
c == '\r' || c == '\n';
}
}
