Use the POSIX tty interface instead of the old interface. This makes
rlogin work properly without COMPAT_43. Obtained from: NetBSD (mycroft)
This commit is contained in:
Tim J. Robbins
parent
f27d1bf2ec
commit
c32cccd0bb
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=120547
@ -40,7 +40,7 @@
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.Nd remote login
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.Sh SYNOPSIS
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.Ar rlogin
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.Op Fl 468DELd
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.Op Fl 468DEd
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.Op Fl e Ar char
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.Op Fl i Ar localname
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.Op Fl l Ar username
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@ -78,14 +78,6 @@ Stop any character from being recognized as an escape character.
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When used with the
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.Fl 8
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option, this provides a completely transparent connection.
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.It Fl L
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Allow the
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.Nm
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session to be run in
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.Dq litout
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(see
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.Xr tty 4 )
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mode.
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.It Fl d
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Turn on socket debugging (see
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.Xr setsockopt 2 )
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@ -58,6 +58,7 @@ __FBSDID("$FreeBSD$");
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*/
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#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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@ -76,7 +77,7 @@ __FBSDID("$FreeBSD$");
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#include <paths.h>
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#include <pwd.h>
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#include <setjmp.h>
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#include <sgtty.h>
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#include <termios.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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@ -92,18 +93,14 @@ __FBSDID("$FreeBSD$");
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#define SIGUSR1 30
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#endif
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int eight, litout, rem;
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int eight, rem;
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struct termios deftty;
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int family = PF_UNSPEC;
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int noescape;
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u_char escapechar = '~';
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const char *speeds[] = {
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"0", "50", "75", "110", "134", "150", "200", "300", "600", "1200",
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"1800", "2400", "4800", "9600", "19200", "38400", "57600", "115200"
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#define MAX_SPEED_LENGTH (sizeof("115200") - 1)
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};
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#define get_window_size(fd, wp) ioctl(fd, TIOCGWINSZ, wp)
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struct winsize winsize;
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@ -131,13 +128,14 @@ main(int argc, char *argv[])
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{
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struct passwd *pw;
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struct servent *sp;
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struct sgttyb ttyb;
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struct termios tty;
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long omask;
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int argoff, ch, dflag, Dflag, one;
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uid_t uid;
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char *host, *localname, *p, *user, term[1024];
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speed_t ospeed;
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struct sockaddr_storage ss;
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int sslen;
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int i, len, len2, sslen;
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argoff = dflag = Dflag = 0;
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one = 1;
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@ -157,7 +155,7 @@ main(int argc, char *argv[])
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argoff = 1;
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}
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#define OPTIONS "468DELde:i:l:"
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#define OPTIONS "468DEKde:i:l:"
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while ((ch = getopt(argc - argoff, argv + argoff, OPTIONS)) != -1)
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switch(ch) {
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case '4':
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@ -177,9 +175,6 @@ main(int argc, char *argv[])
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case 'E':
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noescape = 1;
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break;
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case 'L':
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litout = 1;
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break;
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case 'd':
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dflag = 1;
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break;
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@ -220,14 +215,15 @@ main(int argc, char *argv[])
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if (sp == NULL)
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errx(1, "login/tcp: unknown service");
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#define MAX_TERM_LENGTH (sizeof(term) - 1 - MAX_SPEED_LENGTH - 1)
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(void)strncpy(term, (p = getenv("TERM")) ? p : "network",
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MAX_TERM_LENGTH);
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term[MAX_TERM_LENGTH] = '\0';
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if (ioctl(0, TIOCGETP, &ttyb) == 0) {
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(void)strcat(term, "/");
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(void)strcat(term, speeds[(int)ttyb.sg_ospeed]);
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if ((p = getenv("TERM")) != NULL)
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(void)strlcpy(term, p, sizeof(term));
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len = strlen(term);
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if (len < (sizeof(term) - 1) && tcgetattr(0, &tty) == 0) {
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/* start at 2 to include the / */
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for (ospeed = i = cfgetospeed(&tty), len2 = 2; i > 9; len2++)
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i /= 10;
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if (len + len2 < sizeof(term))
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(void)snprintf(term + len, len2 + 1, "/%d", ospeed);
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}
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(void)get_window_size(0, &winsize);
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@ -272,39 +268,22 @@ main(int argc, char *argv[])
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/*NOTREACHED*/
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}
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int child, defflags, deflflags, tabflag;
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char deferase, defkill;
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struct tchars deftc;
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struct ltchars defltc;
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struct tchars notc = { -1, -1, -1, -1, -1, -1 };
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struct ltchars noltc = { -1, -1, -1, -1, -1, -1 };
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int child;
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void
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doit(long omask)
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{
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struct sgttyb sb;
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(void)ioctl(0, TIOCGETP, (char *)&sb);
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defflags = sb.sg_flags;
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tabflag = defflags & TBDELAY;
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defflags &= ECHO | CRMOD;
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deferase = sb.sg_erase;
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defkill = sb.sg_kill;
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(void)ioctl(0, TIOCLGET, &deflflags);
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(void)ioctl(0, TIOCGETC, &deftc);
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notc.t_startc = deftc.t_startc;
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notc.t_stopc = deftc.t_stopc;
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(void)ioctl(0, TIOCGLTC, &defltc);
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(void)signal(SIGINT, SIG_IGN);
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setsignal(SIGHUP);
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setsignal(SIGQUIT);
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mode(1);
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child = fork();
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if (child == -1) {
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warn("fork");
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done(1);
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}
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if (child == 0) {
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mode(1);
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if (reader(omask) == 0) {
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msg("connection closed");
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exit(0);
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@ -425,11 +404,12 @@ writer(void)
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}
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} else if (local) {
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local = 0;
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if (c == '.' || c == deftc.t_eofc) {
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if (c == '.' || CCEQ(deftty.c_cc[VEOF], c)) {
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echo(c);
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break;
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}
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if (c == defltc.t_suspc || c == defltc.t_dsuspc) {
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if (CCEQ(deftty.c_cc[VSUSP], c) ||
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CCEQ(deftty.c_cc[VDSUSP], c)) {
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bol = 1;
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echo(c);
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stop(c);
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@ -443,8 +423,10 @@ writer(void)
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msg("line gone");
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break;
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}
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bol = c == defkill || c == deftc.t_eofc ||
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c == deftc.t_intrc || c == defltc.t_suspc ||
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bol = CCEQ(deftty.c_cc[VKILL], c) ||
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CCEQ(deftty.c_cc[VEOF], c) ||
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CCEQ(deftty.c_cc[VINTR], c) ||
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CCEQ(deftty.c_cc[VSUSP], c) ||
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c == '\r' || c == '\n';
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}
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}
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@ -476,7 +458,7 @@ stop(char cmdc)
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{
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mode(0);
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(void)signal(SIGCHLD, SIG_IGN);
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(void)kill(cmdc == defltc.t_suspc ? 0 : getpid(), SIGTSTP);
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(void)kill(CCEQ(deftty.c_cc[VSUSP], cmdc) ? 0 : getpid(), SIGTSTP);
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(void)signal(SIGCHLD, catch_child);
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mode(1);
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sigwinch(0); /* check for size changes */
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@ -532,11 +514,10 @@ char rcvbuf[8 * 1024];
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void
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oob(int signo __unused)
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{
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struct sgttyb sb;
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int atmark, n, out, rcvd;
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struct termios tty;
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int atmark, n, rcvd;
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char waste[BUFSIZ], mark;
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out = O_RDWR;
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rcvd = 0;
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while (recv(rem, &mark, 1, MSG_OOB) < 0) {
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switch (errno) {
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@ -567,25 +548,17 @@ oob(int signo __unused)
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(void)kill(ppid, SIGUSR1);
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}
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if (!eight && (mark & TIOCPKT_NOSTOP)) {
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(void)ioctl(0, TIOCGETP, (char *)&sb);
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sb.sg_flags &= ~CBREAK;
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sb.sg_flags |= RAW;
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(void)ioctl(0, TIOCSETN, (char *)&sb);
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notc.t_stopc = -1;
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notc.t_startc = -1;
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(void)ioctl(0, TIOCSETC, (char *)¬c);
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(void)tcgetattr(0, &tty);
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tty.c_iflag &= ~IXON;
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(void)tcsetattr(0, TCSANOW, &tty);
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}
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if (!eight && (mark & TIOCPKT_DOSTOP)) {
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(void)ioctl(0, TIOCGETP, (char *)&sb);
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sb.sg_flags &= ~RAW;
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sb.sg_flags |= CBREAK;
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(void)ioctl(0, TIOCSETN, (char *)&sb);
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notc.t_stopc = deftc.t_stopc;
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notc.t_startc = deftc.t_startc;
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(void)ioctl(0, TIOCSETC, (char *)¬c);
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(void)tcgetattr(0, &tty);
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tty.c_iflag |= (deftty.c_iflag & IXON);
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(void)tcsetattr(0, TCSANOW, &tty);
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}
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if (mark & TIOCPKT_FLUSHWRITE) {
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(void)ioctl(1, TIOCFLUSH, (char *)&out);
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(void)tcflush(1, TCIOFLUSH);
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for (;;) {
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if (ioctl(rem, SIOCATMARK, &atmark) < 0) {
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warn("ioctl");
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@ -665,42 +638,31 @@ reader(int omask)
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void
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mode(int f)
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{
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struct ltchars *ltc;
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struct sgttyb sb;
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struct tchars *tc;
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int lflags;
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struct termios tty;
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(void)ioctl(0, TIOCGETP, (char *)&sb);
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(void)ioctl(0, TIOCLGET, (char *)&lflags);
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switch(f) {
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switch (f) {
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case 0:
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sb.sg_flags &= ~(CBREAK|RAW|TBDELAY);
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sb.sg_flags |= defflags|tabflag;
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tc = &deftc;
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ltc = &defltc;
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sb.sg_kill = defkill;
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sb.sg_erase = deferase;
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lflags = deflflags;
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(void)tcsetattr(0, TCSANOW, &deftty);
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break;
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case 1:
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sb.sg_flags |= (eight ? RAW : CBREAK);
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sb.sg_flags &= ~defflags;
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/* preserve tab delays, but turn off XTABS */
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if ((sb.sg_flags & TBDELAY) == XTABS)
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sb.sg_flags &= ~TBDELAY;
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tc = ¬c;
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ltc = &noltc;
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sb.sg_kill = sb.sg_erase = -1;
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if (litout)
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lflags |= LLITOUT;
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(void)tcgetattr(0, &deftty);
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tty = deftty;
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/* This is loosely derived from sys/kern/tty_compat.c. */
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tty.c_lflag &= ~(ECHO|ICANON|ISIG|IEXTEN);
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tty.c_iflag &= ~ICRNL;
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tty.c_oflag &= ~OPOST;
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tty.c_cc[VMIN] = 1;
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tty.c_cc[VTIME] = 0;
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if (eight) {
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tty.c_iflag &= IXOFF;
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tty.c_cflag &= ~(CSIZE|PARENB);
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tty.c_cflag |= CS8;
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}
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(void)tcsetattr(0, TCSANOW, &tty);
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break;
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default:
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return;
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}
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(void)ioctl(0, TIOCSLTC, (char *)ltc);
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(void)ioctl(0, TIOCSETC, (char *)tc);
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(void)ioctl(0, TIOCSETN, (char *)&sb);
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(void)ioctl(0, TIOCLSET, (char *)&lflags);
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}
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/* ARGSUSED */
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@ -731,7 +693,7 @@ usage(void)
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{
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(void)fprintf(stderr,
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"usage: rlogin [-46%s]%s[-e char] [-i localname] [-l username] host\n",
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"8DELd", " ");
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"8DEd", " ");
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exit(1);
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}
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