614 lines
13 KiB
C
614 lines
13 KiB
C
/* $NetBSD: main.c,v 1.25 1998/03/30 01:52:02 mrg Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1980, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
|
|
#ifndef lint
|
|
__COPYRIGHT("@(#) Copyright (c) 1980, 1993\n\
|
|
The Regents of the University of California. All rights reserved.\n");
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
#if 0
|
|
static char sccsid[] = "from: @(#)main.c 8.1 (Berkeley) 6/20/93";
|
|
#else
|
|
__RCSID("$NetBSD: main.c,v 1.25 1998/03/30 01:52:02 mrg Exp $");
|
|
#endif
|
|
#endif /* not lint */
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/stat.h>
|
|
#include <termios.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/resource.h>
|
|
#include <sys/utsname.h>
|
|
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <time.h>
|
|
#include <ctype.h>
|
|
#include <fcntl.h>
|
|
#include <pwd.h>
|
|
#include <setjmp.h>
|
|
#include <signal.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <syslog.h>
|
|
#include <time.h>
|
|
#include <unistd.h>
|
|
#include <util.h>
|
|
|
|
#include "gettytab.h"
|
|
#include "pathnames.h"
|
|
#include "extern.h"
|
|
|
|
extern char *__progname;
|
|
|
|
/*
|
|
* Set the amount of running time that getty should accumulate
|
|
* before deciding that something is wrong and exit.
|
|
*/
|
|
#define GETTY_TIMEOUT 60 /* seconds */
|
|
|
|
struct termios tmode, omode;
|
|
|
|
int crmod, digit, lower, upper;
|
|
|
|
char hostname[MAXHOSTNAMELEN];
|
|
struct utsname kerninfo;
|
|
char name[16];
|
|
char dev[] = _PATH_DEV;
|
|
char ttyn[32];
|
|
char lockfile[512];
|
|
uid_t ttyowner;
|
|
|
|
#define OBUFSIZ 128
|
|
#define TABBUFSIZ 512
|
|
|
|
char defent[TABBUFSIZ];
|
|
char tabent[TABBUFSIZ];
|
|
|
|
char *env[128];
|
|
|
|
char partab[] = {
|
|
0001,0201,0201,0001,0201,0001,0001,0201,
|
|
0202,0004,0003,0205,0005,0206,0201,0001,
|
|
0201,0001,0001,0201,0001,0201,0201,0001,
|
|
0001,0201,0201,0001,0201,0001,0001,0201,
|
|
0200,0000,0000,0200,0000,0200,0200,0000,
|
|
0000,0200,0200,0000,0200,0000,0000,0200,
|
|
0000,0200,0200,0000,0200,0000,0000,0200,
|
|
0200,0000,0000,0200,0000,0200,0200,0000,
|
|
0200,0000,0000,0200,0000,0200,0200,0000,
|
|
0000,0200,0200,0000,0200,0000,0000,0200,
|
|
0000,0200,0200,0000,0200,0000,0000,0200,
|
|
0200,0000,0000,0200,0000,0200,0200,0000,
|
|
0000,0200,0200,0000,0200,0000,0000,0200,
|
|
0200,0000,0000,0200,0000,0200,0200,0000,
|
|
0200,0000,0000,0200,0000,0200,0200,0000,
|
|
0000,0200,0200,0000,0200,0000,0000,0201
|
|
};
|
|
|
|
#define ERASE tmode.c_cc[VERASE]
|
|
#define KILL tmode.c_cc[VKILL]
|
|
#define EOT tmode.c_cc[VEOF]
|
|
|
|
static void dingdong __P((int));
|
|
static void interrupt __P((int));
|
|
void timeoverrun __P((int));
|
|
|
|
jmp_buf timeout;
|
|
|
|
static void
|
|
dingdong(signo)
|
|
int signo;
|
|
{
|
|
|
|
alarm(0);
|
|
signal(SIGALRM, SIG_DFL);
|
|
longjmp(timeout, 1);
|
|
}
|
|
|
|
jmp_buf intrupt;
|
|
|
|
static void
|
|
interrupt(signo)
|
|
int signo;
|
|
{
|
|
|
|
signal(SIGINT, interrupt);
|
|
longjmp(intrupt, 1);
|
|
}
|
|
|
|
/*
|
|
* Action to take when getty is running too long.
|
|
*/
|
|
void
|
|
timeoverrun(signo)
|
|
int signo;
|
|
{
|
|
|
|
syslog(LOG_ERR, "getty exiting due to excessive running time\n");
|
|
exit(1);
|
|
}
|
|
|
|
int main __P((int, char **));
|
|
static int getname __P((void));
|
|
static void oflush __P((void));
|
|
static void prompt __P((void));
|
|
static void putchr __P((int));
|
|
static void putf __P((const char *));
|
|
static void putpad __P((const char *));
|
|
static void xputs __P((const char *));
|
|
|
|
int
|
|
main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
extern char **environ;
|
|
char *tname;
|
|
int repcnt = 0, failopenlogged = 0, uugetty = 0;
|
|
struct rlimit limit;
|
|
struct passwd *pw;
|
|
|
|
#ifdef __GNUC__
|
|
(void)&tname; /* XXX gcc -Wall */
|
|
#endif
|
|
|
|
signal(SIGINT, SIG_IGN);
|
|
/*
|
|
signal(SIGQUIT, SIG_DFL);
|
|
*/
|
|
openlog("getty", LOG_ODELAY|LOG_CONS|LOG_PID, LOG_AUTH);
|
|
gethostname(hostname, sizeof(hostname));
|
|
if (hostname[0] == '\0')
|
|
strcpy(hostname, "Amnesiac");
|
|
uname(&kerninfo);
|
|
|
|
if (__progname[0] == 'u' && __progname[1] == 'u')
|
|
uugetty = 1;
|
|
|
|
/*
|
|
* Find id of uucp login (if present) so we can chown tty properly.
|
|
*/
|
|
if (uugetty && (pw = getpwnam("uucp")))
|
|
ttyowner = pw->pw_uid;
|
|
else
|
|
ttyowner = 0;
|
|
|
|
/*
|
|
* Limit running time to deal with broken or dead lines.
|
|
*/
|
|
(void)signal(SIGXCPU, timeoverrun);
|
|
limit.rlim_max = RLIM_INFINITY;
|
|
limit.rlim_cur = GETTY_TIMEOUT;
|
|
(void)setrlimit(RLIMIT_CPU, &limit);
|
|
|
|
/*
|
|
* The following is a work around for vhangup interactions
|
|
* which cause great problems getting window systems started.
|
|
* If the tty line is "-", we do the old style getty presuming
|
|
* that the file descriptors are already set up for us.
|
|
* J. Gettys - MIT Project Athena.
|
|
*/
|
|
if (argc <= 2 || strcmp(argv[2], "-") == 0) {
|
|
strncpy(ttyn, ttyname(0), 32);
|
|
ttyn[31] = (char)NULL;
|
|
}
|
|
else {
|
|
int i;
|
|
|
|
strcpy(ttyn, dev);
|
|
strncat(ttyn, argv[2], sizeof(ttyn)-sizeof(dev));
|
|
|
|
if (uugetty) {
|
|
chown(ttyn, ttyowner, 0);
|
|
strcpy(lockfile, _PATH_LOCK);
|
|
strncat(lockfile, argv[2], sizeof(lockfile)-sizeof(_PATH_LOCK));
|
|
/* wait for lockfiles to go away before we try to open */
|
|
if ( pidlock(lockfile, 0, 0, 0) != 0 ) {
|
|
syslog(LOG_ERR, "%s: can't create lockfile", ttyn);
|
|
exit(1);
|
|
}
|
|
unlink(lockfile);
|
|
}
|
|
if (strcmp(argv[0], "+") != 0) {
|
|
chown(ttyn, ttyowner, 0);
|
|
chmod(ttyn, 0600);
|
|
revoke(ttyn);
|
|
if (ttyaction(ttyn, "getty", "root"))
|
|
syslog(LOG_ERR,"%s: ttyaction failed", ttyn);
|
|
/*
|
|
* Delay the open so DTR stays down long enough to be detected.
|
|
*/
|
|
sleep(2);
|
|
while ((i = open(ttyn, O_RDWR)) == -1) {
|
|
if ((repcnt % 10 == 0) &&
|
|
(errno != ENXIO || !failopenlogged)) {
|
|
syslog(LOG_ERR, "%s: %m", ttyn);
|
|
closelog();
|
|
failopenlogged = 1;
|
|
}
|
|
repcnt++;
|
|
sleep(60);
|
|
}
|
|
if (uugetty && pidlock(lockfile, 0, 0, 0) != 0) {
|
|
syslog(LOG_ERR, "%s: can't create lockfile", ttyn);
|
|
exit(1);
|
|
}
|
|
(void) chown(lockfile, ttyowner, 0);
|
|
login_tty(i);
|
|
}
|
|
}
|
|
|
|
/* Start with default tty settings */
|
|
if (tcgetattr(0, &tmode) < 0) {
|
|
syslog(LOG_ERR, "%s: %m", ttyn);
|
|
exit(1);
|
|
}
|
|
omode = tmode;
|
|
|
|
gettable("default", defent);
|
|
gendefaults();
|
|
tname = "default";
|
|
if (argc > 1)
|
|
tname = argv[1];
|
|
for (;;) {
|
|
int off;
|
|
|
|
gettable(tname, tabent);
|
|
if (OPset || EPset || APset)
|
|
APset++, OPset++, EPset++;
|
|
setdefaults();
|
|
off = 0;
|
|
(void)tcflush(0, TCIOFLUSH); /* clear out the crap */
|
|
ioctl(0, FIONBIO, &off); /* turn off non-blocking mode */
|
|
ioctl(0, FIOASYNC, &off); /* ditto for async mode */
|
|
|
|
if (IS)
|
|
cfsetispeed(&tmode, IS);
|
|
else if (SP)
|
|
cfsetispeed(&tmode, SP);
|
|
if (OS)
|
|
cfsetospeed(&tmode, OS);
|
|
else if (SP)
|
|
cfsetospeed(&tmode, SP);
|
|
setflags(0);
|
|
setchars();
|
|
if (tcsetattr(0, TCSANOW, &tmode) < 0) {
|
|
syslog(LOG_ERR, "%s: %m", ttyn);
|
|
exit(1);
|
|
}
|
|
if (AB) {
|
|
tname = autobaud();
|
|
continue;
|
|
}
|
|
if (PS) {
|
|
tname = portselector();
|
|
continue;
|
|
}
|
|
if (CL && *CL)
|
|
putpad(CL);
|
|
edithost(HE);
|
|
if (IM && *IM)
|
|
putf(IM);
|
|
if (setjmp(timeout)) {
|
|
tmode.c_ispeed = tmode.c_ospeed = 0;
|
|
(void)tcsetattr(0, TCSANOW, &tmode);
|
|
exit(1);
|
|
}
|
|
if (TO) {
|
|
signal(SIGALRM, dingdong);
|
|
alarm(TO);
|
|
}
|
|
if (getname()) {
|
|
int i;
|
|
|
|
oflush();
|
|
alarm(0);
|
|
signal(SIGALRM, SIG_DFL);
|
|
if (name[0] == '-') {
|
|
xputs("user names may not start with '-'.");
|
|
continue;
|
|
}
|
|
if (!(upper || lower || digit))
|
|
continue;
|
|
setflags(2);
|
|
if (crmod) {
|
|
tmode.c_iflag |= ICRNL;
|
|
tmode.c_oflag |= ONLCR;
|
|
}
|
|
#if XXX
|
|
if (upper || UC)
|
|
tmode.sg_flags |= LCASE;
|
|
if (lower || LC)
|
|
tmode.sg_flags &= ~LCASE;
|
|
#endif
|
|
if (tcsetattr(0, TCSANOW, &tmode) < 0) {
|
|
syslog(LOG_ERR, "%s: %m", ttyn);
|
|
exit(1);
|
|
}
|
|
signal(SIGINT, SIG_DFL);
|
|
for (i = 0; environ[i] != (char *)0; i++)
|
|
env[i] = environ[i];
|
|
makeenv(&env[i]);
|
|
|
|
limit.rlim_max = RLIM_INFINITY;
|
|
limit.rlim_cur = RLIM_INFINITY;
|
|
(void)setrlimit(RLIMIT_CPU, &limit);
|
|
execle(LO, "login", "-p", "--", name, (char *)0, env);
|
|
syslog(LOG_ERR, "%s: %m", LO);
|
|
exit(1);
|
|
}
|
|
alarm(0);
|
|
signal(SIGALRM, SIG_DFL);
|
|
signal(SIGINT, SIG_IGN);
|
|
if (NX && *NX)
|
|
tname = NX;
|
|
unlink(lockfile);
|
|
}
|
|
}
|
|
|
|
static int
|
|
getname()
|
|
{
|
|
int c;
|
|
char *np;
|
|
char cs;
|
|
|
|
/*
|
|
* Interrupt may happen if we use CBREAK mode
|
|
*/
|
|
if (setjmp(intrupt)) {
|
|
signal(SIGINT, SIG_IGN);
|
|
return (0);
|
|
}
|
|
signal(SIGINT, interrupt);
|
|
setflags(1);
|
|
prompt();
|
|
if (PF > 0) {
|
|
oflush();
|
|
sleep(PF);
|
|
PF = 0;
|
|
}
|
|
if (tcsetattr(0, TCSANOW, &tmode) < 0) {
|
|
syslog(LOG_ERR, "%s: %m", ttyn);
|
|
exit(1);
|
|
}
|
|
crmod = digit = lower = upper = 0;
|
|
np = name;
|
|
for (;;) {
|
|
oflush();
|
|
if (read(STDIN_FILENO, &cs, 1) <= 0)
|
|
exit(0);
|
|
if ((c = cs&0177) == 0)
|
|
return (0);
|
|
if (c == EOT)
|
|
exit(1);
|
|
if (c == '\r' || c == '\n' || np >= &name[sizeof name]) {
|
|
putf("\r\n");
|
|
break;
|
|
}
|
|
if (islower(c))
|
|
lower = 1;
|
|
else if (isupper(c))
|
|
upper = 1;
|
|
else if (c == ERASE || c == '#' || c == '\b') {
|
|
if (np > name) {
|
|
np--;
|
|
if (cfgetospeed(&tmode) >= 1200)
|
|
xputs("\b \b");
|
|
else
|
|
putchr(cs);
|
|
}
|
|
continue;
|
|
} else if (c == KILL || c == '@') {
|
|
putchr(cs);
|
|
putchr('\r');
|
|
if (cfgetospeed(&tmode) < 1200)
|
|
putchr('\n');
|
|
/* this is the way they do it down under ... */
|
|
else if (np > name)
|
|
xputs(
|
|
" \r");
|
|
prompt();
|
|
np = name;
|
|
continue;
|
|
} else if (isdigit(c))
|
|
digit++;
|
|
if (IG && (c <= ' ' || c > 0176))
|
|
continue;
|
|
*np++ = c;
|
|
putchr(cs);
|
|
}
|
|
signal(SIGINT, SIG_IGN);
|
|
*np = 0;
|
|
if (c == '\r')
|
|
crmod = 1;
|
|
if ((upper && !lower && !LC) || UC)
|
|
for (np = name; *np; np++)
|
|
if (isupper(*np))
|
|
*np = tolower(*np);
|
|
return (1);
|
|
}
|
|
|
|
static void
|
|
putpad(s)
|
|
const char *s;
|
|
{
|
|
int pad = 0;
|
|
speed_t ospeed = cfgetospeed(&tmode);
|
|
|
|
if (isdigit(*s)) {
|
|
while (isdigit(*s)) {
|
|
pad *= 10;
|
|
pad += *s++ - '0';
|
|
}
|
|
pad *= 10;
|
|
if (*s == '.' && isdigit(s[1])) {
|
|
pad += s[1] - '0';
|
|
s += 2;
|
|
}
|
|
}
|
|
|
|
xputs(s);
|
|
/*
|
|
* If no delay needed, or output speed is
|
|
* not comprehensible, then don't try to delay.
|
|
*/
|
|
if (pad == 0 || ospeed <= 0)
|
|
return;
|
|
|
|
/*
|
|
* Round up by a half a character frame, and then do the delay.
|
|
* Too bad there are no user program accessible programmed delays.
|
|
* Transmitting pad characters slows many terminals down and also
|
|
* loads the system.
|
|
*/
|
|
pad = (pad * ospeed + 50000) / 100000;
|
|
while (pad--)
|
|
putchr(*PC);
|
|
}
|
|
|
|
static void
|
|
xputs(s)
|
|
const char *s;
|
|
{
|
|
while (*s)
|
|
putchr(*s++);
|
|
}
|
|
|
|
char outbuf[OBUFSIZ];
|
|
int obufcnt = 0;
|
|
|
|
static void
|
|
putchr(cc)
|
|
int cc;
|
|
{
|
|
char c;
|
|
|
|
c = cc;
|
|
if (!NP) {
|
|
c |= partab[c&0177] & 0200;
|
|
if (OP)
|
|
c ^= 0200;
|
|
}
|
|
if (!UB) {
|
|
outbuf[obufcnt++] = c;
|
|
if (obufcnt >= OBUFSIZ)
|
|
oflush();
|
|
} else
|
|
write(STDOUT_FILENO, &c, 1);
|
|
}
|
|
|
|
static void
|
|
oflush()
|
|
{
|
|
if (obufcnt)
|
|
write(STDOUT_FILENO, outbuf, obufcnt);
|
|
obufcnt = 0;
|
|
}
|
|
|
|
static void
|
|
prompt()
|
|
{
|
|
|
|
putf(LM);
|
|
if (CO)
|
|
putchr('\n');
|
|
}
|
|
|
|
static void
|
|
putf(cp)
|
|
const char *cp;
|
|
{
|
|
extern char editedhost[];
|
|
time_t t;
|
|
char *slash, db[100];
|
|
|
|
while (*cp) {
|
|
if (*cp != '%') {
|
|
putchr(*cp++);
|
|
continue;
|
|
}
|
|
switch (*++cp) {
|
|
|
|
case 't':
|
|
slash = strrchr(ttyn, '/');
|
|
if (slash == (char *) 0)
|
|
xputs(ttyn);
|
|
else
|
|
xputs(&slash[1]);
|
|
break;
|
|
|
|
case 'h':
|
|
xputs(editedhost);
|
|
break;
|
|
|
|
case 'd': {
|
|
static char fmt[] = "%l:% %p on %A, %d %B %Y";
|
|
|
|
fmt[4] = 'M'; /* I *hate* SCCS... */
|
|
(void)time(&t);
|
|
(void)strftime(db, sizeof(db), fmt, localtime(&t));
|
|
xputs(db);
|
|
break;
|
|
|
|
case 's':
|
|
xputs(kerninfo.sysname);
|
|
break;
|
|
|
|
case 'm':
|
|
xputs(kerninfo.machine);
|
|
break;
|
|
|
|
case 'r':
|
|
xputs(kerninfo.release);
|
|
break;
|
|
|
|
case 'v':
|
|
xputs(kerninfo.version);
|
|
break;
|
|
}
|
|
|
|
case '%':
|
|
putchr('%');
|
|
break;
|
|
}
|
|
cp++;
|
|
}
|
|
}
|