Commit | Line | Data |
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bcf1365c | 1 | /* |
ede75793 KB |
2 | * Copyright (c) 1980, 1987, 1988 The Regents of the University of California. |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms are permitted | |
6 | * provided that the above copyright notice and this paragraph are | |
7 | * duplicated in all such forms and that any documentation, | |
8 | * advertising materials, and other materials related to such | |
9 | * distribution and use acknowledge that the software was developed | |
10 | * by the University of California, Berkeley. The name of the | |
11 | * University may not be used to endorse or promote products derived | |
12 | * from this software without specific prior written permission. | |
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
15 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
bcf1365c DF |
16 | */ |
17 | ||
18 | #ifndef lint | |
19 | char copyright[] = | |
ede75793 | 20 | "@(#) Copyright (c) 1980, 1987, 1988 The Regents of the University of California.\n\ |
bcf1365c | 21 | All rights reserved.\n"; |
ede75793 | 22 | #endif /* not lint */ |
bcf1365c | 23 | |
22d4760e | 24 | #ifndef lint |
abc4056e | 25 | static char sccsid[] = "@(#)login.c 5.28 (Berkeley) %G%"; |
ede75793 | 26 | #endif /* not lint */ |
22d4760e | 27 | |
88a01c09 BJ |
28 | /* |
29 | * login [ name ] | |
5dbe2745 MK |
30 | * login -h hostname (for telnetd, etc.) |
31 | * login -f name (for pre-authenticated login: datakit, xterm, etc.) | |
88a01c09 BJ |
32 | */ |
33 | ||
7a625b73 | 34 | #include <sys/param.h> |
3b8dd95e SL |
35 | #include <sys/quota.h> |
36 | #include <sys/stat.h> | |
37 | #include <sys/time.h> | |
38 | #include <sys/resource.h> | |
9479aa87 | 39 | #include <sys/file.h> |
80f91e3f | 40 | #include <sys/ioctl.h> |
3b8dd95e | 41 | |
88a01c09 BJ |
42 | #include <utmp.h> |
43 | #include <signal.h> | |
88a01c09 | 44 | #include <lastlog.h> |
22d4760e | 45 | #include <errno.h> |
9479aa87 BJ |
46 | #include <ttyent.h> |
47 | #include <syslog.h> | |
c89291e2 | 48 | #include <grp.h> |
80f91e3f | 49 | #include <pwd.h> |
ede75793 | 50 | #include <setjmp.h> |
80f91e3f KB |
51 | #include <stdio.h> |
52 | #include <strings.h> | |
c89291e2 | 53 | |
80f91e3f | 54 | #define TTYGRPNAME "tty" /* name of group to own ttys */ |
88a01c09 | 55 | |
80f91e3f KB |
56 | #define MOTDFILE "/etc/motd" |
57 | #define MAILDIR "/usr/spool/mail" | |
58 | #define NOLOGIN "/etc/nologin" | |
59 | #define HUSHLOGIN ".hushlogin" | |
60 | #define LASTLOG "/usr/adm/lastlog" | |
61 | #define BSHELL "/bin/sh" | |
f570e1ff | 62 | |
3b8dd95e | 63 | /* |
80f91e3f KB |
64 | * This bounds the time given to login. Not a define so it can |
65 | * be patched on machines where it's too small. | |
3b8dd95e | 66 | */ |
a9b031fe | 67 | int timeout = 300; |
86eb6c9e | 68 | |
80f91e3f | 69 | struct passwd *pwd; |
f0c0c252 KB |
70 | int repeatcnt; |
71 | char term[64], *hostname, *username, *tty; | |
88a01c09 | 72 | |
ede75793 | 73 | struct sgttyb sgttyb; |
80f91e3f | 74 | struct tchars tc = { |
714accc5 SL |
75 | CINTR, CQUIT, CSTART, CSTOP, CEOT, CBRK |
76 | }; | |
80f91e3f | 77 | struct ltchars ltc = { |
714accc5 | 78 | CSUSP, CDSUSP, CRPRNT, CFLUSH, CWERASE, CLNEXT |
841d84b0 BJ |
79 | }; |
80 | ||
88a01c09 | 81 | main(argc, argv) |
80f91e3f KB |
82 | int argc; |
83 | char **argv; | |
88a01c09 | 84 | { |
80f91e3f KB |
85 | extern int errno, optind; |
86 | extern char *optarg, **environ; | |
87 | struct group *gr; | |
88 | register int ch; | |
89 | register char *p; | |
f0c0c252 | 90 | int ask, fflag, hflag, pflag, cnt; |
80f91e3f | 91 | int quietlog, passwd_req, ioctlval, timedout(); |
f0c0c252 | 92 | char *domain, *salt, *envinit[1], *ttyn; |
80f91e3f KB |
93 | char tbuf[MAXPATHLEN + 2]; |
94 | char *ttyname(), *stypeof(), *crypt(), *getpass(); | |
95 | time_t time(); | |
96 | off_t lseek(); | |
97 | ||
98 | (void)signal(SIGALRM, timedout); | |
99 | (void)alarm((u_int)timeout); | |
100 | (void)signal(SIGQUIT, SIG_IGN); | |
101 | (void)signal(SIGINT, SIG_IGN); | |
102 | (void)setpriority(PRIO_PROCESS, 0, 0); | |
103 | (void)quota(Q_SETUID, 0, 0, 0); | |
104 | ||
3b8dd95e | 105 | /* |
d3737d51 | 106 | * -p is used by getty to tell login not to destroy the environment |
5dbe2745 | 107 | * -f is used to skip a second login authentication |
ee1eff74 MK |
108 | * -h is used by other servers to pass the name of the remote |
109 | * host to login so that it may be placed in utmp and wtmp | |
3b8dd95e | 110 | */ |
80f91e3f KB |
111 | (void)gethostname(tbuf, sizeof(tbuf)); |
112 | domain = index(tbuf, '.'); | |
113 | ||
ee1eff74 | 114 | fflag = hflag = pflag = 0; |
80f91e3f | 115 | passwd_req = 1; |
ee1eff74 | 116 | while ((ch = getopt(argc, argv, "fh:p")) != EOF) |
ede75793 | 117 | switch (ch) { |
80f91e3f | 118 | case 'f': |
80f91e3f | 119 | fflag = 1; |
80f91e3f KB |
120 | break; |
121 | case 'h': | |
122 | if (getuid()) { | |
123 | fprintf(stderr, | |
124 | "login: -h for super-user only.\n"); | |
b6f7cade | 125 | exit(1); |
5dbe2745 | 126 | } |
80f91e3f KB |
127 | hflag = 1; |
128 | if (domain && (p = index(optarg, '.')) && | |
abc4056e | 129 | strcasecmp(p, domain) == 0) |
80f91e3f KB |
130 | *p = 0; |
131 | hostname = optarg; | |
132 | break; | |
133 | case 'p': | |
d3737d51 | 134 | pflag = 1; |
80f91e3f | 135 | break; |
80f91e3f KB |
136 | case '?': |
137 | default: | |
ede75793 | 138 | fprintf(stderr, "usage: login [-fp] [username]\n"); |
80f91e3f | 139 | exit(1); |
d3737d51 | 140 | } |
80f91e3f KB |
141 | argc -= optind; |
142 | argv += optind; | |
f0c0c252 KB |
143 | if (*argv) { |
144 | ask = 0; | |
80f91e3f | 145 | username = *argv; |
f0c0c252 KB |
146 | } |
147 | else | |
148 | ask = 1; | |
80f91e3f KB |
149 | |
150 | ioctlval = 0; | |
151 | (void)ioctl(0, TIOCLSET, &ioctlval); | |
152 | (void)ioctl(0, TIOCNXCL, 0); | |
ede75793 KB |
153 | (void)fcntl(0, F_SETFL, ioctlval); |
154 | (void)ioctl(0, TIOCGETP, &sgttyb); | |
ede75793 KB |
155 | sgttyb.sg_erase = CERASE; |
156 | sgttyb.sg_kill = CKILL; | |
80f91e3f KB |
157 | (void)ioctl(0, TIOCSLTC, <c); |
158 | (void)ioctl(0, TIOCSETC, &tc); | |
ede75793 | 159 | (void)ioctl(0, TIOCSETP, &sgttyb); |
80f91e3f KB |
160 | |
161 | for (cnt = getdtablesize(); cnt > 2; cnt--) | |
162 | close(cnt); | |
163 | ||
88a01c09 | 164 | ttyn = ttyname(0); |
80f91e3f | 165 | if (ttyn == NULL || *ttyn == '\0') |
88a01c09 | 166 | ttyn = "/dev/tty??"; |
80f91e3f KB |
167 | if (tty = rindex(ttyn, '/')) |
168 | ++tty; | |
9479aa87 | 169 | else |
80f91e3f KB |
170 | tty = ttyn; |
171 | ||
076ae92c | 172 | openlog("login", LOG_ODELAY, LOG_AUTH); |
80f91e3f | 173 | |
f0c0c252 | 174 | for (cnt = 0;; ask = 1) { |
80f91e3f KB |
175 | ioctlval = 0; |
176 | (void)ioctl(0, TIOCSETD, &ioctlval); | |
177 | ||
f0c0c252 | 178 | if (ask) { |
ede75793 | 179 | fflag = 0; |
80f91e3f | 180 | getloginname(); |
ede75793 | 181 | } |
f0c0c252 KB |
182 | /* note if trying multiple login's */ |
183 | if (repeatcnt) { | |
184 | if (strcmp(tbuf, username)) { | |
185 | badlogin(tbuf); | |
186 | repeatcnt = 1; | |
187 | (void)strcpy(tbuf, username); | |
188 | } | |
189 | else | |
190 | ++repeatcnt; | |
191 | } | |
192 | else { | |
193 | repeatcnt = 1; | |
194 | (void)strcpy(tbuf, username); | |
195 | } | |
ede75793 KB |
196 | if (pwd = getpwnam(username)) |
197 | salt = pwd->pw_passwd; | |
198 | else | |
199 | salt = "xx"; | |
80f91e3f KB |
200 | |
201 | /* if user not super-user, check for disabled logins */ | |
ede75793 | 202 | if (pwd == NULL || pwd->pw_uid) |
80f91e3f KB |
203 | checknologin(); |
204 | ||
3b8dd95e | 205 | /* |
ede75793 KB |
206 | * Disallow automatic login to root; if not invoked by |
207 | * root, disallow if the uid's differ. | |
3b8dd95e | 208 | */ |
ede75793 | 209 | if (fflag && pwd) { |
5dbe2745 MK |
210 | int uid = getuid(); |
211 | ||
ede75793 KB |
212 | passwd_req = pwd->pw_uid == 0 || |
213 | (uid && uid != pwd->pw_uid); | |
f570e1ff | 214 | } |
80f91e3f | 215 | |
3b8dd95e | 216 | /* |
ee1eff74 | 217 | * If no pre-authentication and a password exists |
80f91e3f | 218 | * for this user, prompt for one and verify it. |
3b8dd95e | 219 | */ |
ede75793 | 220 | if (!passwd_req || pwd && !*pwd->pw_passwd) |
80f91e3f KB |
221 | break; |
222 | ||
223 | setpriority(PRIO_PROCESS, 0, -4); | |
ede75793 | 224 | p = crypt(getpass("Password:"), salt); |
80f91e3f | 225 | setpriority(PRIO_PROCESS, 0, 0); |
ede75793 | 226 | if (pwd && !strcmp(p, pwd->pw_passwd)) |
80f91e3f KB |
227 | break; |
228 | ||
229 | printf("Login incorrect\n"); | |
f0c0c252 KB |
230 | /* we allow 10 tries, but after 3 we start backing off */ |
231 | if (++cnt > 3) { | |
232 | if (cnt >= 10) { | |
233 | badlogin(username); | |
234 | (void)ioctl(0, TIOCHPCL, (struct sgttyb *)NULL); | |
235 | sleepexit(1); | |
236 | } | |
237 | sleep((u_int)((cnt - 3) * 5)); | |
f570e1ff | 238 | } |
80f91e3f | 239 | } |
88a01c09 | 240 | |
80f91e3f KB |
241 | /* committed to login -- turn off timeout */ |
242 | (void)alarm((u_int)0); | |
243 | ||
f0c0c252 KB |
244 | /* log any mistakes -- don't count last one */ |
245 | --repeatcnt; | |
246 | badlogin(username); | |
247 | ||
80f91e3f KB |
248 | /* |
249 | * If valid so far and root is logging in, see if root logins on | |
250 | * this terminal are permitted. | |
251 | */ | |
f0c0c252 | 252 | if (pwd->pw_uid == 0 && !rootterm()) { |
80f91e3f | 253 | if (hostname) |
f0c0c252 KB |
254 | syslog(LOG_ERR, "ROOT LOGIN REFUSED ON %s FROM %s", |
255 | tty, hostname); | |
22d4760e | 256 | else |
ede75793 | 257 | syslog(LOG_ERR, "ROOT LOGIN REFUSED ON %s", tty); |
80f91e3f KB |
258 | printf("Login incorrect\n"); |
259 | sleepexit(1); | |
22d4760e | 260 | } |
80f91e3f | 261 | |
80f91e3f KB |
262 | if (quota(Q_SETUID, pwd->pw_uid, 0, 0) < 0 && errno != EINVAL) { |
263 | switch(errno) { | |
264 | case EUSERS: | |
265 | fprintf(stderr, | |
266 | "Too many users logged on already.\nTry again later.\n"); | |
267 | break; | |
268 | case EPROCLIM: | |
269 | fprintf(stderr, | |
270 | "You have too many processes running.\n"); | |
271 | break; | |
272 | default: | |
273 | perror("quota (Q_SETUID)"); | |
f570e1ff | 274 | } |
80f91e3f KB |
275 | sleepexit(0); |
276 | } | |
277 | ||
ede75793 KB |
278 | if (chdir(pwd->pw_dir) < 0) { |
279 | printf("No directory %s!\n", pwd->pw_dir); | |
280 | if (chdir("/")) | |
281 | exit(0); | |
282 | pwd->pw_dir = "/"; | |
283 | printf("Logging in with home = \"/\".\n"); | |
284 | } | |
285 | ||
286 | /* nothing else left to fail -- really log in */ | |
80f91e3f KB |
287 | { |
288 | struct utmp utmp; | |
289 | ||
290 | (void)time(&utmp.ut_time); | |
291 | strncpy(utmp.ut_name, username, sizeof(utmp.ut_name)); | |
292 | strncpy(utmp.ut_host, hostname, sizeof(utmp.ut_host)); | |
293 | strncpy(utmp.ut_line, tty, sizeof(utmp.ut_line)); | |
294 | login(&utmp); | |
f570e1ff | 295 | } |
80f91e3f KB |
296 | |
297 | quietlog = access(HUSHLOGIN, F_OK) == 0; | |
f0c0c252 | 298 | dolastlog(quietlog); |
80f91e3f | 299 | |
ee1eff74 | 300 | if (!hflag) { /* XXX */ |
80f91e3f KB |
301 | static struct winsize win = { 0, 0, 0, 0 }; |
302 | ||
303 | (void)ioctl(0, TIOCSWINSZ, &win); | |
304 | } | |
305 | ||
306 | (void)chown(ttyn, pwd->pw_uid, | |
307 | (gr = getgrnam(TTYGRPNAME)) ? gr->gr_gid : pwd->pw_gid); | |
308 | (void)chmod(ttyn, 0620); | |
309 | (void)setgid(pwd->pw_gid); | |
310 | ||
311 | initgroups(username, pwd->pw_gid); | |
312 | ||
22d4760e | 313 | quota(Q_DOWARN, pwd->pw_uid, (dev_t)-1, 0); |
80f91e3f | 314 | (void)setuid(pwd->pw_uid); |
3daca631 | 315 | |
ede75793 KB |
316 | if (*pwd->pw_shell == '\0') |
317 | pwd->pw_shell = BSHELL; | |
318 | /* turn on new line discipline for the csh */ | |
319 | else if (!strcmp(pwd->pw_shell, "/bin/csh")) { | |
320 | ioctlval = NTTYDISC; | |
321 | (void)ioctl(0, TIOCSETD, &ioctlval); | |
322 | } | |
323 | ||
80f91e3f | 324 | /* destroy environment unless user has requested preservation */ |
d3737d51 SL |
325 | if (!pflag) |
326 | environ = envinit; | |
ede75793 KB |
327 | (void)setenv("HOME", pwd->pw_dir, 1); |
328 | (void)setenv("SHELL", pwd->pw_shell, 1); | |
d3737d51 | 329 | if (term[0] == '\0') |
f0c0c252 | 330 | strncpy(term, stypeof(), sizeof(term)); |
ede75793 KB |
331 | (void)setenv("TERM", term, 0); |
332 | (void)setenv("USER", pwd->pw_name, 1); | |
333 | (void)setenv("PATH", "/usr/ucb:/bin:/usr/bin:", 0); | |
d3737d51 | 334 | |
9479aa87 | 335 | if (tty[sizeof("tty")-1] == 'd') |
d3737d51 SL |
336 | syslog(LOG_INFO, "DIALUP %s, %s", tty, pwd->pw_name); |
337 | if (pwd->pw_uid == 0) | |
80f91e3f | 338 | if (hostname) |
f0c0c252 KB |
339 | syslog(LOG_NOTICE, "ROOT LOGIN %s FROM %s", |
340 | tty, hostname); | |
df9d9536 KM |
341 | else |
342 | syslog(LOG_NOTICE, "ROOT LOGIN %s", tty); | |
80f91e3f | 343 | |
4f8d3876 | 344 | if (!quietlog) { |
6821e9c5 | 345 | struct stat st; |
d3737d51 | 346 | |
80f91e3f KB |
347 | motd(); |
348 | (void)sprintf(tbuf, "%s/%s", MAILDIR, pwd->pw_name); | |
349 | if (stat(tbuf, &st) == 0 && st.st_size != 0) | |
6821e9c5 | 350 | printf("You have %smail.\n", |
80f91e3f | 351 | (st.st_mtime > st.st_atime) ? "new " : ""); |
f570e1ff | 352 | } |
80f91e3f KB |
353 | |
354 | (void)signal(SIGALRM, SIG_DFL); | |
355 | (void)signal(SIGQUIT, SIG_DFL); | |
356 | (void)signal(SIGINT, SIG_DFL); | |
357 | (void)signal(SIGTSTP, SIG_IGN); | |
358 | ||
359 | tbuf[0] = '-'; | |
360 | strcpy(tbuf + 1, (p = rindex(pwd->pw_shell, '/')) ? | |
361 | p + 1 : pwd->pw_shell); | |
362 | execlp(pwd->pw_shell, tbuf, 0); | |
ede75793 | 363 | fprintf(stderr, "login: no shell: "); |
f570e1ff | 364 | perror(pwd->pw_shell); |
88a01c09 BJ |
365 | exit(0); |
366 | } | |
367 | ||
80f91e3f | 368 | getloginname() |
3b8dd95e | 369 | { |
80f91e3f KB |
370 | register int ch; |
371 | register char *p; | |
372 | static char nbuf[UT_NAMESIZE + 1]; | |
3b8dd95e | 373 | |
80f91e3f | 374 | for (;;) { |
5a786176 | 375 | printf("login: "); |
ede75793 | 376 | for (p = nbuf; (ch = getchar()) != '\n'; ) { |
f0c0c252 KB |
377 | if (ch == EOF) { |
378 | badlogin(username); | |
3b8dd95e | 379 | exit(0); |
f0c0c252 | 380 | } |
ede75793 | 381 | if (p < nbuf + UT_NAMESIZE) |
80f91e3f | 382 | *p++ = ch; |
3b8dd95e | 383 | } |
80f91e3f KB |
384 | if (p > nbuf) |
385 | if (nbuf[0] == '-') | |
386 | fprintf(stderr, | |
387 | "login names may not start with '-'.\n"); | |
388 | else { | |
389 | *p = '\0'; | |
390 | username = nbuf; | |
ede75793 | 391 | break; |
80f91e3f | 392 | } |
3b8dd95e | 393 | } |
3b8dd95e SL |
394 | } |
395 | ||
396 | timedout() | |
397 | { | |
80f91e3f | 398 | fprintf(stderr, "Login timed out after %d seconds\n", timeout); |
3b8dd95e SL |
399 | exit(0); |
400 | } | |
401 | ||
f0c0c252 | 402 | rootterm() |
88a01c09 | 403 | { |
80f91e3f | 404 | struct ttyent *t; |
1886582e | 405 | |
80f91e3f | 406 | return((t = getttynam(tty)) && t->ty_status&TTY_SECURE); |
88a01c09 BJ |
407 | } |
408 | ||
ede75793 KB |
409 | jmp_buf motdinterrupt; |
410 | ||
80f91e3f | 411 | motd() |
f570e1ff | 412 | { |
ede75793 | 413 | register int fd, nchars; |
80f91e3f | 414 | int (*oldint)(), sigint(); |
ede75793 | 415 | char tbuf[8192]; |
80f91e3f | 416 | |
ede75793 | 417 | if ((fd = open(MOTDFILE, O_RDONLY, 0)) < 0) |
80f91e3f KB |
418 | return; |
419 | oldint = signal(SIGINT, sigint); | |
ede75793 KB |
420 | if (setjmp(motdinterrupt) == 0) |
421 | while ((nchars = read(fd, tbuf, sizeof(tbuf))) > 0) | |
422 | (void)write(fileno(stdout), tbuf, nchars); | |
80f91e3f | 423 | (void)signal(SIGINT, oldint); |
ede75793 | 424 | (void)close(fd); |
80f91e3f | 425 | } |
9479aa87 | 426 | |
80f91e3f KB |
427 | sigint() |
428 | { | |
ede75793 | 429 | longjmp(motdinterrupt, 1); |
80f91e3f KB |
430 | } |
431 | ||
432 | checknologin() | |
433 | { | |
434 | register int fd, nchars; | |
ede75793 | 435 | char tbuf[8192]; |
80f91e3f KB |
436 | |
437 | if ((fd = open(NOLOGIN, O_RDONLY, 0)) >= 0) { | |
438 | while ((nchars = read(fd, tbuf, sizeof(tbuf))) > 0) | |
439 | (void)write(fileno(stdout), tbuf, nchars); | |
440 | sleepexit(0); | |
f570e1ff | 441 | } |
f570e1ff BJ |
442 | } |
443 | ||
f0c0c252 | 444 | dolastlog(quiet) |
80f91e3f | 445 | int quiet; |
88a01c09 | 446 | { |
80f91e3f KB |
447 | struct lastlog ll; |
448 | int fd; | |
449 | ||
450 | if ((fd = open(LASTLOG, O_RDWR, 0)) >= 0) { | |
ede75793 | 451 | (void)lseek(fd, (off_t)pwd->pw_uid * sizeof(ll), L_SET); |
80f91e3f KB |
452 | if (!quiet) { |
453 | if (read(fd, (char *)&ll, sizeof(ll)) == sizeof(ll) && | |
454 | ll.ll_time != 0) { | |
455 | printf("Last login: %.*s ", | |
456 | 24-5, (char *)ctime(&ll.ll_time)); | |
457 | if (*ll.ll_host != '\0') | |
458 | printf("from %.*s\n", | |
459 | sizeof(ll.ll_host), ll.ll_host); | |
460 | else | |
461 | printf("on %.*s\n", | |
462 | sizeof(ll.ll_line), ll.ll_line); | |
463 | } | |
ede75793 | 464 | (void)lseek(fd, (off_t)pwd->pw_uid * sizeof(ll), L_SET); |
80f91e3f KB |
465 | } |
466 | (void)time(&ll.ll_time); | |
467 | strncpy(ll.ll_line, tty, sizeof(ll.ll_line)); | |
468 | strncpy(ll.ll_host, hostname, sizeof(ll.ll_host)); | |
469 | (void)write(fd, (char *)&ll, sizeof(ll)); | |
470 | (void)close(fd); | |
88a01c09 | 471 | } |
88a01c09 BJ |
472 | } |
473 | ||
f0c0c252 KB |
474 | badlogin(name) |
475 | char *name; | |
476 | { | |
477 | if (!repeatcnt) | |
478 | return; | |
479 | if (hostname) | |
480 | syslog(LOG_ERR, "%d LOGIN FAILURE%s ON %s FROM %s, %s", | |
481 | repeatcnt, repeatcnt > 1 ? "S" : "", tty, hostname, name); | |
482 | else | |
483 | syslog(LOG_ERR, "%d LOGIN FAILURE%s ON %s, %s", | |
484 | repeatcnt, repeatcnt > 1 ? "S" : "", tty, name); | |
485 | } | |
486 | ||
f570e1ff | 487 | #undef UNKNOWN |
80f91e3f | 488 | #define UNKNOWN "su" |
88a01c09 BJ |
489 | |
490 | char * | |
f0c0c252 | 491 | stypeof() |
88a01c09 | 492 | { |
80f91e3f | 493 | struct ttyent *t; |
88a01c09 | 494 | |
f0c0c252 | 495 | return(tty && (t = getttynam(tty)) ? t->ty_type : UNKNOWN); |
88a01c09 | 496 | } |
86eb6c9e BJ |
497 | |
498 | getstr(buf, cnt, err) | |
80f91e3f | 499 | char *buf, *err; |
86eb6c9e | 500 | int cnt; |
86eb6c9e | 501 | { |
80f91e3f | 502 | char ch; |
86eb6c9e BJ |
503 | |
504 | do { | |
80f91e3f | 505 | if (read(0, &ch, sizeof(ch)) != sizeof(ch)) |
86eb6c9e BJ |
506 | exit(1); |
507 | if (--cnt < 0) { | |
80f91e3f KB |
508 | fprintf(stderr, "%s too long\r\n", err); |
509 | sleepexit(1); | |
86eb6c9e | 510 | } |
80f91e3f KB |
511 | *buf++ = ch; |
512 | } while (ch); | |
86eb6c9e | 513 | } |
4f8d3876 | 514 | |
80f91e3f KB |
515 | sleepexit(eval) |
516 | int eval; | |
c89291e2 | 517 | { |
80f91e3f KB |
518 | sleep((u_int)5); |
519 | exit(eval); | |
c89291e2 | 520 | } |