Add the >optional< ability to sense PPP link bringups and call an authentication program
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@ -30,7 +30,7 @@
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.\" SUCH DAMAGE.
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.\"
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.\" from: @(#)gettytab.5 8.4 (Berkeley) 4/19/94
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.\" $Id: gettytab.5,v 1.6 1996/05/05 19:01:08 joerg Exp $
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.\" $Id: gettytab.5,v 1.7 1996/08/23 20:33:49 mpp Exp $
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.\" "
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.Dd April 19, 1994
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.Dt GETTYTAB 5
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@ -148,6 +148,7 @@ hangup line on last close
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.It "pe bool false use printer (hard copy) erase algorithm"
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.It "pf num 0 delay"
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between first prompt and following flush (seconds)
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.It "pp str unused PPP authentication program"
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.It "ps bool false line connected to a"
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.Tn MICOM
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port selector
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@ -356,8 +357,15 @@ implementation.
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does not check parity of input characters in
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.Dv RAW
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mode.
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.Pp
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If
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.Em \&pp
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string is specified and a PPP link bringup sequence is recognized,
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getty will invoke the program referenced by the pp option. This
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can be used to handle incoming PPP calls.
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.Sh SEE ALSO
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.Xr login 1 ,
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.Xr ppplogin 8 ,
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.Xr gethostname 2 ,
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.Xr uname 2 ,
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.Xr termcap 5 ,
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@ -31,7 +31,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)gettytab.h 8.2 (Berkeley) 3/30/94
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* $Id: gettytab.h,v 1.1.1.2 1996/04/13 15:33:09 joerg Exp $
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* $Id: gettytab.h,v 1.3 1996/05/05 19:01:09 joerg Exp $
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*/
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/*
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@ -86,6 +86,7 @@ struct gettyflags {
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#define WE gettystrs[22].value
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#define LN gettystrs[23].value
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#define Lo gettystrs[24].value
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#define PP gettystrs[25].value
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/*
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* Numeric definitions.
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@ -33,7 +33,7 @@
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#ifndef lint
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/*static char sccsid[] = "from: @(#)init.c 8.1 (Berkeley) 6/4/93";*/
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static char rcsid[] = "$Id: init.c,v 1.1.1.2 1996/04/13 15:33:10 joerg Exp $";
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static char rcsid[] = "$Id: init.c,v 1.3 1996/05/05 19:01:09 joerg Exp $";
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#endif /* not lint */
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/*
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@ -76,6 +76,7 @@ struct gettystrs gettystrs[] = {
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{ "we", &tmode.c_cc[VWERASE] }, /* word erase */
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{ "ln", &tmode.c_cc[VLNEXT] }, /* literal next */
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{ "Lo" }, /* locale for strftime() */
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{ "pp" }, /* ppp login program */
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{ 0 }
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};
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@ -39,7 +39,7 @@ static char copyright[] =
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#ifndef lint
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/*static char sccsid[] = "from: @(#)main.c 8.1 (Berkeley) 6/20/93";*/
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static char rcsid[] = "$Id: main.c,v 1.9 1996/05/05 19:01:10 joerg Exp $";
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static char rcsid[] = "$Id: main.c,v 1.10 1996/05/07 16:42:26 ache Exp $";
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#endif /* not lint */
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#include <sys/param.h>
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@ -78,6 +78,16 @@ static char rcsid[] = "$Id: main.c,v 1.9 1996/05/05 19:01:10 joerg Exp $";
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#undef CTRL
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#define CTRL(x) (x&037)
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/* defines for auto detection of incoming PPP calls (->PAP/CHAP) */
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#define PPP_FRAME 0x7e /* PPP Framing character */
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#define PPP_STATION 0xff /* "All Station" character */
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#define PPP_ESCAPE 0x7d /* Escape Character */
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#define PPP_CONTROL 0x03 /* PPP Control Field */
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#define PPP_CONTROL_ESCAPED 0x23 /* PPP Control Field, escaped */
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#define PPP_LCP_HI 0xc0 /* LCP protocol - high byte */
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#define PPP_LCP_LOW 0x21 /* LCP protocol - low byte */
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struct termios tmode, omode;
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int crmod, digit, lower, upper;
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@ -172,6 +182,7 @@ main(argc, argv)
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const char *tname;
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int repcnt = 0, failopenlogged = 0;
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struct rlimit limit;
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int rval;
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signal(SIGINT, SIG_IGN);
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signal(SIGQUIT, SIG_IGN);
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@ -293,7 +304,11 @@ main(argc, argv)
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signal(SIGALRM, dingdong);
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alarm(TO);
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}
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if (getname()) {
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if ((rval = getname()) == 2) {
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execle(PP, "ppplogin", ttyn, (char *) 0, env);
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syslog(LOG_ERR, "%s: %m", PP);
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exit(1);
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} else if (rval) {
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register int i;
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oflush();
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@ -345,7 +360,9 @@ getname()
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{
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register int c;
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register char *np;
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char cs;
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unsigned char cs;
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int ppp_state;
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int ppp_connection = 0;
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/*
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* Interrupt may happen if we use CBREAK mode
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@ -374,6 +391,34 @@ getname()
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exit(0);
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if ((c = cs&0177) == 0)
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return (0);
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/* PPP detection state machine..
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Look for sequences:
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PPP_FRAME, PPP_STATION, PPP_ESCAPE, PPP_CONTROL_ESCAPED or
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PPP_FRAME, PPP_STATION, PPP_CONTROL (deviant from RFC)
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See RFC1662.
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Derived from code from Michael Hancock, <michaelh@cet.co.jp>
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and Erik 'PPP' Olson, <eriko@wrq.com>
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*/
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if (PP && (cs == PPP_FRAME)) {
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ppp_state = 1;
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} else if (ppp_state == 1 && cs == PPP_STATION) {
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ppp_state = 2;
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} else if (ppp_state == 2 && cs == PPP_ESCAPE) {
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ppp_state = 3;
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} else if ((ppp_state == 2 && cs == PPP_CONTROL)
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|| (ppp_state == 3 && cs == PPP_CONTROL_ESCAPED)) {
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ppp_state = 4;
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} else if (ppp_state == 4 && cs == PPP_LCP_HI) {
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ppp_state = 5;
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} else if (ppp_state == 5 && cs == PPP_LCP_LOW) {
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ppp_connection = 1;
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break;
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} else {
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ppp_state = 0;
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}
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if (c == EOT || c == CTRL('d'))
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exit(1);
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if (c == '\r' || c == '\n' || np >= &name[sizeof name]) {
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@ -418,7 +463,7 @@ getname()
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for (np = name; *np; np++)
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if (isupper(*np))
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*np = tolower(*np);
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return (1);
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return (1 + ppp_connection);
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}
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static void
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