2 * Copyright (c) 1980, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 static const char copyright[] =
36 "@(#) Copyright (c) 1980, 1993\n\
37 The Regents of the University of California. All rights reserved.\n";
42 static char sccsid[] = "@(#)from: main.c 8.1 (Berkeley) 6/20/93";
44 static const char rcsid[] =
45 "$Id: main.c,v 1.25 1999/04/04 04:36:50 peter Exp $";
48 #include <sys/param.h>
50 #include <sys/ioctl.h>
51 #include <sys/resource.h>
52 #include <sys/ttydefaults.h>
53 #include <sys/utsname.h>
70 #include "pathnames.h"
74 * Set the amount of running time that getty should accumulate
75 * before deciding that something is wrong and exit.
77 #define GETTY_TIMEOUT 60 /* seconds */
80 #define CTRL(x) (x&037)
82 /* defines for auto detection of incoming PPP calls (->PAP/CHAP) */
84 #define PPP_FRAME 0x7e /* PPP Framing character */
85 #define PPP_STATION 0xff /* "All Station" character */
86 #define PPP_ESCAPE 0x7d /* Escape Character */
87 #define PPP_CONTROL 0x03 /* PPP Control Field */
88 #define PPP_CONTROL_ESCAPED 0x23 /* PPP Control Field, escaped */
89 #define PPP_LCP_HI 0xc0 /* LCP protocol - high byte */
90 #define PPP_LCP_LOW 0x21 /* LCP protocol - low byte */
92 struct termios tmode, omode;
94 int crmod, digit, lower, upper;
96 char hostname[MAXHOSTNAMELEN];
97 char name[MAXLOGNAME*3];
98 char dev[] = _PATH_DEV;
102 #define TABBUFSIZ 512
104 char defent[TABBUFSIZ];
105 char tabent[TABBUFSIZ];
110 0001,0201,0201,0001,0201,0001,0001,0201,
111 0202,0004,0003,0205,0005,0206,0201,0001,
112 0201,0001,0001,0201,0001,0201,0201,0001,
113 0001,0201,0201,0001,0201,0001,0001,0201,
114 0200,0000,0000,0200,0000,0200,0200,0000,
115 0000,0200,0200,0000,0200,0000,0000,0200,
116 0000,0200,0200,0000,0200,0000,0000,0200,
117 0200,0000,0000,0200,0000,0200,0200,0000,
118 0200,0000,0000,0200,0000,0200,0200,0000,
119 0000,0200,0200,0000,0200,0000,0000,0200,
120 0000,0200,0200,0000,0200,0000,0000,0200,
121 0200,0000,0000,0200,0000,0200,0200,0000,
122 0000,0200,0200,0000,0200,0000,0000,0200,
123 0200,0000,0000,0200,0000,0200,0200,0000,
124 0200,0000,0000,0200,0000,0200,0200,0000,
125 0000,0200,0200,0000,0200,0000,0000,0201
128 #define ERASE tmode.c_cc[VERASE]
129 #define KILL tmode.c_cc[VKILL]
130 #define EOT tmode.c_cc[VEOF]
134 static void dingdong __P((int));
135 static int getname __P((void));
136 static void interrupt __P((int));
137 static void oflush __P((void));
138 static void prompt __P((void));
139 static void putchr __P((int));
140 static void putf __P((const char *));
141 static void putpad __P((const char *));
142 static void puts __P((const char *));
143 static void timeoverrun __P((int));
144 static char *getline __P((int));
145 static void setttymode __P((const char *, int));
146 static void setdefttymode __P((const char *));
147 static int opentty __P((const char *, int));
149 int main __P((int, char **));
171 * Action to take when getty is running too long.
178 syslog(LOG_ERR, "getty exiting due to excessive running time");
187 extern char **environ;
189 int first_sleep = 1, first_time = 1;
193 signal(SIGINT, SIG_IGN);
194 signal(SIGQUIT, SIG_IGN);
196 openlog("getty", LOG_ODELAY|LOG_CONS|LOG_PID, LOG_AUTH);
197 gethostname(hostname, sizeof(hostname) - 1);
198 hostname[sizeof(hostname) - 1] = '\0';
199 if (hostname[0] == '\0')
200 strcpy(hostname, "Amnesiac");
203 * Limit running time to deal with broken or dead lines.
205 (void)signal(SIGXCPU, timeoverrun);
206 limit.rlim_max = RLIM_INFINITY;
207 limit.rlim_cur = GETTY_TIMEOUT;
208 (void)setrlimit(RLIMIT_CPU, &limit);
210 gettable("default", defent);
217 * The following is a work around for vhangup interactions
218 * which cause great problems getting window systems started.
219 * If the tty line is "-", we do the old style getty presuming
220 * that the file descriptors are already set up for us.
221 * J. Gettys - MIT Project Athena.
223 if (argc <= 2 || strcmp(argv[2], "-") == 0)
224 strcpy(ttyn, ttyname(STDIN_FILENO));
227 strncat(ttyn, argv[2], sizeof(ttyn)-sizeof(dev));
228 if (strcmp(argv[0], "+") != 0) {
233 gettable(tname, tabent);
235 /* Init modem sequence has been specified
238 if (!opentty(ttyn, O_RDWR|O_NONBLOCK))
240 setdefttymode(tname);
241 if (getty_chat(IC, CT, DC) > 0) {
242 syslog(LOG_ERR, "modem init problem on %s", ttyn);
243 (void)tcsetattr(STDIN_FILENO, TCSANOW, &tmode);
250 struct timeval timeout;
252 if (!opentty(ttyn, O_RDWR|O_NONBLOCK))
254 setdefttymode(tname);
255 rfds = 1 << 0; /* FD_SET */
258 i = select(32, (fd_set*)&rfds, (fd_set*)NULL,
259 (fd_set*)NULL, RT ? &timeout : NULL);
261 syslog(LOG_ERR, "select %s: %m", ttyn);
263 syslog(LOG_NOTICE, "recycle tty %s", ttyn);
264 (void)tcsetattr(STDIN_FILENO, TCSANOW, &tmode);
265 exit(0); /* recycle for init */
267 i = getty_chat(AC, CT, DC);
269 syslog(LOG_ERR, "modem answer problem on %s", ttyn);
270 (void)tcsetattr(STDIN_FILENO, TCSANOW, &tmode);
273 } else { /* blocking open */
274 if (!opentty(ttyn, O_RDWR))
280 /* Start with default tty settings */
281 if (tcgetattr(STDIN_FILENO, &tmode) < 0) {
282 syslog(LOG_ERR, "tcgetattr %s: %m", ttyn);
286 * Don't rely on the driver too much, and initialize crucial
287 * things according to <sys/ttydefaults.h>. Avoid clobbering
288 * the c_cc[] settings however, the console drivers might wish
289 * to leave their idea of the preferred VERASE key value
292 tmode.c_iflag = TTYDEF_IFLAG;
293 tmode.c_oflag = TTYDEF_OFLAG;
294 tmode.c_lflag = TTYDEF_LFLAG;
295 tmode.c_cflag = TTYDEF_CFLAG;
301 * if a delay was specified then sleep for that
302 * number of seconds before writing the initial prompt
304 if (first_sleep && DE) {
306 /* remove any noise */
307 (void)tcflush(STDIN_FILENO, TCIOFLUSH);
311 setttymode(tname, 0);
317 tname = portselector();
324 /* if this is the first time through this, and an
325 issue file has been given, then send it */
326 if (first_time && IF) {
329 if ((fd = open(IF, O_RDONLY)) != -1) {
332 while ((cp = getline(fd)) != NULL) {
342 if (setjmp(timeout)) {
343 cfsetispeed(&tmode, B0);
344 cfsetospeed(&tmode, B0);
345 (void)tcsetattr(STDIN_FILENO, TCSANOW, &tmode);
349 signal(SIGALRM, dingdong);
357 while (*p && q < &name[sizeof name - 1]) {
360 else if (islower(*p))
362 else if (isdigit(*p))
371 limit.rlim_max = RLIM_INFINITY;
372 limit.rlim_cur = RLIM_INFINITY;
373 (void)setrlimit(RLIMIT_CPU, &limit);
374 execle(PP, "ppplogin", ttyn, (char *) 0, env);
375 syslog(LOG_ERR, "%s: %m", PP);
377 } else if (rval || AL) {
382 signal(SIGALRM, SIG_DFL);
383 if (name[0] == '-') {
384 puts("user names may not start with '-'.");
387 if (!(upper || lower || digit))
391 tmode.c_iflag |= ICRNL;
392 tmode.c_oflag |= ONLCR;
396 tmode.sg_flags |= LCASE;
398 tmode.sg_flags &= ~LCASE;
400 if (tcsetattr(STDIN_FILENO, TCSANOW, &tmode) < 0) {
401 syslog(LOG_ERR, "tcsetattr %s: %m", ttyn);
404 signal(SIGINT, SIG_DFL);
405 for (i = 0; environ[i] != (char *)0; i++)
409 limit.rlim_max = RLIM_INFINITY;
410 limit.rlim_cur = RLIM_INFINITY;
411 (void)setrlimit(RLIMIT_CPU, &limit);
412 execle(LO, "login", AL ? "-fp" : "-p", name,
414 syslog(LOG_ERR, "%s: %m", LO);
418 signal(SIGALRM, SIG_DFL);
419 signal(SIGINT, SIG_IGN);
426 opentty(const char *ttyn, int flags)
429 int failopenlogged = 0;
431 while (j < 10 && (i = open(ttyn, flags)) == -1)
433 if (((j % 10) == 0) && (errno != ENXIO || !failopenlogged)) {
434 syslog(LOG_ERR, "open %s: %m", ttyn);
441 syslog(LOG_ERR, "open %s: %m", ttyn);
454 if (tcgetattr(STDIN_FILENO, &tmode) < 0) {
455 syslog(LOG_ERR, "tcgetattr %s: %m", ttyn);
458 tmode.c_iflag = TTYDEF_IFLAG;
459 tmode.c_oflag = TTYDEF_OFLAG;
460 tmode.c_lflag = TTYDEF_LFLAG;
461 tmode.c_cflag = TTYDEF_CFLAG;
463 setttymode(tname, 1);
467 setttymode(tname, raw)
473 gettable(tname, tabent);
474 if (OPset || EPset || APset)
475 APset++, OPset++, EPset++;
477 (void)tcflush(STDIN_FILENO, TCIOFLUSH); /* clear out the crap */
478 ioctl(STDIN_FILENO, FIONBIO, &off); /* turn off non-blocking mode */
479 ioctl(STDIN_FILENO, FIOASYNC, &off); /* ditto for async mode */
482 cfsetispeed(&tmode, speed(IS));
484 cfsetispeed(&tmode, speed(SP));
486 cfsetospeed(&tmode, speed(OS));
488 cfsetospeed(&tmode, speed(SP));
493 if (tcsetattr(STDIN_FILENO, TCSANOW, &tmode) < 0) {
494 syslog(LOG_ERR, "tcsetattr %s: %m", ttyn);
507 int ppp_connection = 0;
510 * Interrupt may happen if we use CBREAK mode
512 if (setjmp(intrupt)) {
513 signal(SIGINT, SIG_IGN);
516 signal(SIGINT, interrupt);
524 if (tcsetattr(STDIN_FILENO, TCSANOW, &tmode) < 0) {
525 syslog(LOG_ERR, "%s: %m", ttyn);
528 crmod = digit = lower = upper = 0;
532 if (read(STDIN_FILENO, &cs, 1) <= 0)
534 if ((c = cs&0177) == 0)
537 /* PPP detection state machine..
539 PPP_FRAME, PPP_STATION, PPP_ESCAPE, PPP_CONTROL_ESCAPED or
540 PPP_FRAME, PPP_STATION, PPP_CONTROL (deviant from RFC)
542 Derived from code from Michael Hancock, <michaelh@cet.co.jp>
543 and Erik 'PPP' Olson, <eriko@wrq.com>
546 if (PP && (cs == PPP_FRAME)) {
548 } else if (ppp_state == 1 && cs == PPP_STATION) {
550 } else if (ppp_state == 2 && cs == PPP_ESCAPE) {
552 } else if ((ppp_state == 2 && cs == PPP_CONTROL)
553 || (ppp_state == 3 && cs == PPP_CONTROL_ESCAPED)) {
555 } else if (ppp_state == 4 && cs == PPP_LCP_HI) {
557 } else if (ppp_state == 5 && cs == PPP_LCP_LOW) {
564 if (c == EOT || c == CTRL('d'))
566 if (c == '\r' || c == '\n' || np >= &name[sizeof name-1]) {
574 else if (c == ERASE || c == '\b' || c == 0177) {
577 if (cfgetospeed(&tmode) >= 1200)
583 } else if (c == KILL || c == CTRL('u')) {
585 if (cfgetospeed(&tmode) < 1200)
587 /* this is the way they do it down under ... */
593 } else if (isdigit(c))
595 if (IG && (c <= ' ' || c > 0176))
600 signal(SIGINT, SIG_IGN);
604 if ((upper && !lower && !LC) || UC)
605 for (np = name; *np; np++)
608 return (1 + ppp_connection);
613 register const char *s;
616 speed_t ospeed = cfgetospeed(&tmode);
619 while (isdigit(*s)) {
624 if (*s == '.' && isdigit(s[1])) {
632 * If no delay needed, or output speed is
633 * not comprehensible, then don't try to delay.
635 if (pad == 0 || ospeed <= 0)
639 * Round up by a half a character frame, and then do the delay.
640 * Too bad there are no user program accessible programmed delays.
641 * Transmitting pad characters slows many terminals down and also
644 pad = (pad * ospeed + 50000) / 100000;
651 register const char *s;
657 char outbuf[OBUFSIZ];
668 c |= partab[c&0177] & 0200;
673 outbuf[obufcnt++] = c;
674 if (obufcnt >= OBUFSIZ)
677 write(STDOUT_FILENO, &c, 1);
684 write(STDOUT_FILENO, outbuf, obufcnt);
703 static char linebuf[512];
706 * This is certainly slow, but it avoids having to include
707 * stdio.h unnecessarily. Issue files should be small anyway.
709 while (i < (sizeof linebuf - 3) && read(fd, linebuf+i, 1)==1) {
710 if (linebuf[i] == '\n') {
711 /* Don't rely on newline mode, assume raw */
720 return i ? linebuf : 0;
725 register const char *cp;
727 extern char editedhost[];
729 char *slash, db[100];
731 static struct utsname kerninfo;
733 if (!*kerninfo.sysname)
744 slash = strrchr(ttyn, '/');
745 if (slash == (char *) 0)
759 (void)setlocale(LC_TIME, Lo);
760 (void)strftime(db, sizeof(db), "%+", localtime(&t));
765 puts(kerninfo.sysname);
769 puts(kerninfo.machine);
773 puts(kerninfo.release);
777 puts(kerninfo.version);