pw_user.c revision 285405
1/*- 2 * Copyright (C) 1996 3 * David L. Nugent. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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 * 14 * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 */ 27 28#ifndef lint 29static const char rcsid[] = 30 "$FreeBSD: head/usr.sbin/pw/pw_user.c 285405 2015-07-11 20:10:12Z bapt $"; 31#endif /* not lint */ 32 33#include <ctype.h> 34#include <err.h> 35#include <fcntl.h> 36#include <sys/param.h> 37#include <dirent.h> 38#include <paths.h> 39#include <termios.h> 40#include <sys/types.h> 41#include <sys/time.h> 42#include <sys/resource.h> 43#include <login_cap.h> 44#include <pwd.h> 45#include <grp.h> 46#include <libutil.h> 47#include "pw.h" 48#include "bitmap.h" 49 50#define LOGNAMESIZE (MAXLOGNAME-1) 51 52static char locked_str[] = "*LOCKED*"; 53 54static int pw_userdel(char *name, long id); 55static int print_user(struct passwd * pwd); 56static uid_t pw_uidpolicy(struct userconf * cnf, long id); 57static uid_t pw_gidpolicy(struct cargs * args, char *nam, gid_t prefer); 58static time_t pw_pwdpolicy(struct userconf * cnf, struct cargs * args); 59static time_t pw_exppolicy(struct userconf * cnf, struct cargs * args); 60static char *pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user); 61static char *pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell); 62static char *pw_password(struct userconf * cnf, struct cargs * args, char const * user); 63static char *shell_path(char const * path, char *shells[], char *sh); 64static void rmat(uid_t uid); 65static void rmopie(char const * name); 66 67static void 68create_and_populate_homedir(struct passwd *pwd) 69{ 70 char *homedir, *dotdir; 71 struct userconf *cnf = conf.userconf; 72 73 homedir = dotdir = NULL; 74 75 if (conf.rootdir[0] != '\0') { 76 asprintf(&homedir, "%s/%s", conf.rootdir, pwd->pw_dir); 77 if (homedir == NULL) 78 errx(EX_OSERR, "out of memory"); 79 asprintf(&dotdir, "%s/%s", conf.rootdir, cnf->dotdir); 80 } 81 82 copymkdir(homedir ? homedir : pwd->pw_dir, dotdir ? dotdir: cnf->dotdir, 83 cnf->homemode, pwd->pw_uid, pwd->pw_gid); 84 pw_log(cnf, M_ADD, W_USER, "%s(%u) home %s made", pwd->pw_name, 85 pwd->pw_uid, pwd->pw_dir); 86} 87 88static int 89set_passwd(struct passwd *pwd, bool update) 90{ 91 int b, istty; 92 struct termios t, n; 93 login_cap_t *lc; 94 char line[_PASSWORD_LEN+1]; 95 char *p; 96 97 if (conf.fd == '-') { 98 if (!pwd->pw_passwd || *pwd->pw_passwd != '*') { 99 pwd->pw_passwd = "*"; /* No access */ 100 return (1); 101 } 102 return (0); 103 } 104 105 if ((istty = isatty(conf.fd))) { 106 if (tcgetattr(conf.fd, &t) == -1) 107 istty = 0; 108 else { 109 n = t; 110 n.c_lflag &= ~(ECHO); 111 tcsetattr(conf.fd, TCSANOW, &n); 112 printf("%s%spassword for user %s:", 113 update ? "new " : "", 114 conf.precrypted ? "encrypted " : "", 115 pwd->pw_name); 116 fflush(stdout); 117 } 118 } 119 b = read(conf.fd, line, sizeof(line) - 1); 120 if (istty) { /* Restore state */ 121 tcsetattr(conf.fd, TCSANOW, &t); 122 fputc('\n', stdout); 123 fflush(stdout); 124 } 125 126 if (b < 0) 127 err(EX_IOERR, "-%c file descriptor", 128 conf.precrypted ? 'H' : 'h'); 129 line[b] = '\0'; 130 if ((p = strpbrk(line, "\r\n")) != NULL) 131 *p = '\0'; 132 if (!*line) 133 errx(EX_DATAERR, "empty password read on file descriptor %d", 134 conf.fd); 135 if (conf.precrypted) { 136 if (strchr(line, ':') != NULL) 137 errx(EX_DATAERR, "bad encrypted password"); 138 pwd->pw_passwd = line; 139 } else { 140 lc = login_getpwclass(pwd); 141 if (lc == NULL || 142 login_setcryptfmt(lc, "sha512", NULL) == NULL) 143 warn("setting crypt(3) format"); 144 login_close(lc); 145 pwd->pw_passwd = pw_pwcrypt(line); 146 } 147 return (1); 148} 149 150int 151pw_usernext(struct userconf *cnf, bool quiet) 152{ 153 uid_t next = pw_uidpolicy(cnf, -1); 154 155 if (quiet) 156 return (next); 157 158 printf("%u:", next); 159 pw_groupnext(cnf, quiet); 160 161 return (EXIT_SUCCESS); 162} 163 164static int 165pw_usershow(char *name, long id, struct passwd *fakeuser) 166{ 167 struct passwd *pwd = NULL; 168 169 if (id < 0 && name == NULL && !conf.all) 170 errx(EX_DATAERR, "username or id or '-a' required"); 171 172 if (conf.all) { 173 SETPWENT(); 174 while ((pwd = GETPWENT()) != NULL) 175 print_user(pwd); 176 ENDPWENT(); 177 return (EXIT_SUCCESS); 178 } 179 180 pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id); 181 if (pwd == NULL) { 182 if (conf.force) { 183 pwd = fakeuser; 184 } else { 185 if (name == NULL) 186 errx(EX_NOUSER, "no such uid `%ld'", id); 187 errx(EX_NOUSER, "no such user `%s'", name); 188 } 189 } 190 191 return (print_user(pwd)); 192} 193 194static void 195perform_chgpwent(const char *name, struct passwd *pwd) 196{ 197 int rc; 198 199 rc = chgpwent(name, pwd); 200 if (rc == -1) 201 errx(EX_IOERR, "user '%s' does not exist (NIS?)", pwd->pw_name); 202 else if (rc != 0) 203 err(EX_IOERR, "passwd file update"); 204 205 if (conf.userconf->nispasswd && *conf.userconf->nispasswd == '/') { 206 rc = chgnispwent(conf.userconf->nispasswd, name, pwd); 207 if (rc == -1) 208 warn("User '%s' not found in NIS passwd", pwd->pw_name); 209 else 210 warn("NIS passwd update"); 211 /* NOTE: NIS-only update errors are not fatal */ 212 } 213} 214 215/* 216 * The M_LOCK and M_UNLOCK functions simply add or remove 217 * a "*LOCKED*" prefix from in front of the password to 218 * prevent it decoding correctly, and therefore prevents 219 * access. Of course, this only prevents access via 220 * password authentication (not ssh, kerberos or any 221 * other method that does not use the UNIX password) but 222 * that is a known limitation. 223 */ 224static int 225pw_userlock(char *name, long id, int mode) 226{ 227 struct passwd *pwd = NULL; 228 char *passtmp = NULL; 229 bool locked = false; 230 231 if (id < 0 && name == NULL) 232 errx(EX_DATAERR, "username or id required"); 233 234 pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id); 235 if (pwd == NULL) { 236 if (name == NULL) 237 errx(EX_NOUSER, "no such uid `%ld'", id); 238 errx(EX_NOUSER, "no such user `%s'", name); 239 } 240 241 if (name == NULL) 242 name = pwd->pw_name; 243 244 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str) -1) == 0) 245 locked = true; 246 if (mode == M_LOCK && locked) 247 errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name); 248 if (mode == M_UNLOCK && !locked) 249 errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name); 250 251 if (mode == M_LOCK) { 252 asprintf(&passtmp, "%s%s", locked_str, pwd->pw_passwd); 253 if (passtmp == NULL) /* disaster */ 254 errx(EX_UNAVAILABLE, "out of memory"); 255 pwd->pw_passwd = passtmp; 256 } else { 257 pwd->pw_passwd += sizeof(locked_str)-1; 258 } 259 260 perform_chgpwent(name, pwd); 261 free(passtmp); 262 263 return (EXIT_SUCCESS); 264} 265 266/*- 267 * -C config configuration file 268 * -q quiet operation 269 * -n name login name 270 * -u uid user id 271 * -c comment user name/comment 272 * -d directory home directory 273 * -e date account expiry date 274 * -p date password expiry date 275 * -g grp primary group 276 * -G grp1,grp2 additional groups 277 * -m [ -k dir ] create and set up home 278 * -s shell name of login shell 279 * -o duplicate uid ok 280 * -L class user class 281 * -l name new login name 282 * -h fd password filehandle 283 * -H fd encrypted password filehandle 284 * -F force print or add 285 * Setting defaults: 286 * -D set user defaults 287 * -b dir default home root dir 288 * -e period default expiry period 289 * -p period default password change period 290 * -g group default group 291 * -G grp1,grp2.. default additional groups 292 * -L class default login class 293 * -k dir default home skeleton 294 * -s shell default shell 295 * -w method default password method 296 */ 297 298int 299pw_user(int mode, char *name, long id, struct cargs * args) 300{ 301 int rc, edited = 0; 302 char *p = NULL; 303 struct carg *arg; 304 struct passwd *pwd = NULL; 305 struct group *grp; 306 struct stat st; 307 struct userconf *cnf; 308 char line[_PASSWORD_LEN+1]; 309 char path[MAXPATHLEN]; 310 FILE *fp; 311 char *dmode_c; 312 void *set = NULL; 313 314 static struct passwd fakeuser = 315 { 316 "nouser", 317 "*", 318 -1, 319 -1, 320 0, 321 "", 322 "User &", 323 "/nonexistent", 324 "/bin/sh", 325 0 326#if defined(__FreeBSD__) 327 ,0 328#endif 329 }; 330 331 cnf = conf.userconf; 332 333 if (mode == M_NEXT) 334 return (pw_usernext(cnf, conf.quiet)); 335 336 if (mode == M_PRINT) 337 return (pw_usershow(name, id, &fakeuser)); 338 339 if (mode == M_DELETE) 340 return (pw_userdel(name, id)); 341 342 if (mode == M_LOCK || mode == M_UNLOCK) 343 return (pw_userlock(name, id, mode)); 344 345 /* 346 * We can do all of the common legwork here 347 */ 348 349 if ((arg = getarg(args, 'b')) != NULL) { 350 cnf->home = arg->val; 351 } 352 353 if ((arg = getarg(args, 'M')) != NULL) { 354 dmode_c = arg->val; 355 if ((set = setmode(dmode_c)) == NULL) 356 errx(EX_DATAERR, "invalid directory creation mode '%s'", 357 dmode_c); 358 cnf->homemode = getmode(set, _DEF_DIRMODE); 359 free(set); 360 } 361 362 /* 363 * If we'll need to use it or we're updating it, 364 * then create the base home directory if necessary 365 */ 366 if (arg != NULL || getarg(args, 'm') != NULL) { 367 int l = strlen(cnf->home); 368 369 if (l > 1 && cnf->home[l-1] == '/') /* Shave off any trailing path delimiter */ 370 cnf->home[--l] = '\0'; 371 372 if (l < 2 || *cnf->home != '/') /* Check for absolute path name */ 373 errx(EX_DATAERR, "invalid base directory for home '%s'", cnf->home); 374 375 if (stat(cnf->home, &st) == -1) { 376 char dbuf[MAXPATHLEN]; 377 378 /* 379 * This is a kludge especially for Joerg :) 380 * If the home directory would be created in the root partition, then 381 * we really create it under /usr which is likely to have more space. 382 * But we create a symlink from cnf->home -> "/usr" -> cnf->home 383 */ 384 if (strchr(cnf->home+1, '/') == NULL) { 385 snprintf(dbuf, MAXPATHLEN, "/usr%s", cnf->home); 386 if (mkdir(dbuf, _DEF_DIRMODE) != -1 || errno == EEXIST) { 387 chown(dbuf, 0, 0); 388 /* 389 * Skip first "/" and create symlink: 390 * /home -> usr/home 391 */ 392 symlink(dbuf+1, cnf->home); 393 } 394 /* If this falls, fall back to old method */ 395 } 396 strlcpy(dbuf, cnf->home, sizeof(dbuf)); 397 p = dbuf; 398 if (stat(dbuf, &st) == -1) { 399 while ((p = strchr(p + 1, '/')) != NULL) { 400 *p = '\0'; 401 if (stat(dbuf, &st) == -1) { 402 if (mkdir(dbuf, _DEF_DIRMODE) == -1) 403 goto direrr; 404 chown(dbuf, 0, 0); 405 } else if (!S_ISDIR(st.st_mode)) 406 errx(EX_OSFILE, "'%s' (root home parent) is not a directory", dbuf); 407 *p = '/'; 408 } 409 } 410 if (stat(dbuf, &st) == -1) { 411 if (mkdir(dbuf, _DEF_DIRMODE) == -1) { 412 direrr: err(EX_OSFILE, "mkdir '%s'", dbuf); 413 } 414 chown(dbuf, 0, 0); 415 } 416 } else if (!S_ISDIR(st.st_mode)) 417 errx(EX_OSFILE, "root home `%s' is not a directory", cnf->home); 418 } 419 420 if ((arg = getarg(args, 'e')) != NULL) 421 cnf->expire_days = atoi(arg->val); 422 423 if ((arg = getarg(args, 'y')) != NULL) 424 cnf->nispasswd = arg->val; 425 426 if ((arg = getarg(args, 'p')) != NULL && arg->val) 427 cnf->password_days = atoi(arg->val); 428 429 if ((arg = getarg(args, 'g')) != NULL) { 430 if (!*(p = arg->val)) /* Handle empty group list specially */ 431 cnf->default_group = ""; 432 else { 433 if ((grp = GETGRNAM(p)) == NULL) { 434 if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 435 errx(EX_NOUSER, "group `%s' does not exist", p); 436 } 437 cnf->default_group = newstr(grp->gr_name); 438 } 439 } 440 if ((arg = getarg(args, 'L')) != NULL) 441 cnf->default_class = pw_checkname(arg->val, 0); 442 443 if ((arg = getarg(args, 'G')) != NULL && arg->val) { 444 int i = 0; 445 446 for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) { 447 if ((grp = GETGRNAM(p)) == NULL) { 448 if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 449 errx(EX_NOUSER, "group `%s' does not exist", p); 450 } 451 if (extendarray(&cnf->groups, &cnf->numgroups, i + 2) != -1) 452 cnf->groups[i++] = newstr(grp->gr_name); 453 } 454 while (i < cnf->numgroups) 455 cnf->groups[i++] = NULL; 456 } 457 458 if ((arg = getarg(args, 'k')) != NULL) { 459 if (stat(cnf->dotdir = arg->val, &st) == -1 || !S_ISDIR(st.st_mode)) 460 errx(EX_OSFILE, "skeleton `%s' is not a directory or does not exist", cnf->dotdir); 461 } 462 463 if ((arg = getarg(args, 's')) != NULL) 464 cnf->shell_default = arg->val; 465 466 if ((arg = getarg(args, 'w')) != NULL) 467 cnf->default_password = boolean_val(arg->val, cnf->default_password); 468 if (mode == M_ADD && getarg(args, 'D')) { 469 if (name != NULL) 470 errx(EX_DATAERR, "can't combine `-D' with `-n name'"); 471 if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 472 if ((cnf->min_uid = (uid_t) atoi(p)) == 0) 473 cnf->min_uid = 1000; 474 if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid) 475 cnf->max_uid = 32000; 476 } 477 if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 478 if ((cnf->min_gid = (gid_t) atoi(p)) == 0) 479 cnf->min_gid = 1000; 480 if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid) 481 cnf->max_gid = 32000; 482 } 483 484 if (write_userconfig(conf.config)) 485 return (EXIT_SUCCESS); 486 err(EX_IOERR, "config udpate"); 487 } 488 489 if (name != NULL) 490 pwd = GETPWNAM(pw_checkname(name, 0)); 491 492 if (id < 0 && name == NULL) 493 errx(EX_DATAERR, "user name or id required"); 494 495 /* 496 * Update require that the user exists 497 */ 498 if (mode == M_UPDATE) { 499 500 if (name == NULL && pwd == NULL) /* Try harder */ 501 pwd = GETPWUID(id); 502 503 if (pwd == NULL) { 504 if (name == NULL) 505 errx(EX_NOUSER, "no such uid `%ld'", id); 506 errx(EX_NOUSER, "no such user `%s'", name); 507 } 508 509 if (name == NULL) 510 name = pwd->pw_name; 511 512 /* 513 * The rest is edit code 514 */ 515 if (conf.newname != NULL) { 516 if (strcmp(pwd->pw_name, "root") == 0) 517 errx(EX_DATAERR, "can't rename `root' account"); 518 pwd->pw_name = pw_checkname(conf.newname, 0); 519 edited = 1; 520 } 521 522 if (id > 0 && isdigit((unsigned char)*arg->val)) { 523 pwd->pw_uid = (uid_t)id; 524 edited = 1; 525 if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) 526 errx(EX_DATAERR, "can't change uid of `root' account"); 527 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 528 warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name); 529 } 530 531 if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) { /* Already checked this */ 532 gid_t newgid = (gid_t) GETGRNAM(cnf->default_group)->gr_gid; 533 if (newgid != pwd->pw_gid) { 534 edited = 1; 535 pwd->pw_gid = newgid; 536 } 537 } 538 539 if ((arg = getarg(args, 'p')) != NULL) { 540 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 541 if (pwd->pw_change != 0) { 542 pwd->pw_change = 0; 543 edited = 1; 544 } 545 } 546 else { 547 time_t now = time(NULL); 548 time_t expire = parse_date(now, arg->val); 549 550 if (pwd->pw_change != expire) { 551 pwd->pw_change = expire; 552 edited = 1; 553 } 554 } 555 } 556 557 if ((arg = getarg(args, 'e')) != NULL) { 558 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 559 if (pwd->pw_expire != 0) { 560 pwd->pw_expire = 0; 561 edited = 1; 562 } 563 } 564 else { 565 time_t now = time(NULL); 566 time_t expire = parse_date(now, arg->val); 567 568 if (pwd->pw_expire != expire) { 569 pwd->pw_expire = expire; 570 edited = 1; 571 } 572 } 573 } 574 575 if ((arg = getarg(args, 's')) != NULL) { 576 char *shell = shell_path(cnf->shelldir, cnf->shells, arg->val); 577 if (shell == NULL) 578 shell = ""; 579 if (strcmp(shell, pwd->pw_shell) != 0) { 580 pwd->pw_shell = shell; 581 edited = 1; 582 } 583 } 584 585 if (getarg(args, 'L')) { 586 if (cnf->default_class == NULL) 587 cnf->default_class = ""; 588 if (strcmp(pwd->pw_class, cnf->default_class) != 0) { 589 pwd->pw_class = cnf->default_class; 590 edited = 1; 591 } 592 } 593 594 if ((arg = getarg(args, 'd')) != NULL) { 595 if (strcmp(pwd->pw_dir, arg->val)) 596 edited = 1; 597 if (stat(pwd->pw_dir = arg->val, &st) == -1) { 598 if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0) 599 warnx("WARNING: home `%s' does not exist", pwd->pw_dir); 600 } else if (!S_ISDIR(st.st_mode)) 601 warnx("WARNING: home `%s' is not a directory", pwd->pw_dir); 602 } 603 604 if ((arg = getarg(args, 'w')) != NULL && conf.fd == -1) { 605 login_cap_t *lc; 606 607 lc = login_getpwclass(pwd); 608 if (lc == NULL || 609 login_setcryptfmt(lc, "sha512", NULL) == NULL) 610 warn("setting crypt(3) format"); 611 login_close(lc); 612 pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 613 edited = 1; 614 } 615 616 } else { 617 login_cap_t *lc; 618 619 /* 620 * Add code 621 */ 622 623 if (name == NULL) /* Required */ 624 errx(EX_DATAERR, "login name required"); 625 else if ((pwd = GETPWNAM(name)) != NULL) /* Exists */ 626 errx(EX_DATAERR, "login name `%s' already exists", name); 627 628 /* 629 * Now, set up defaults for a new user 630 */ 631 pwd = &fakeuser; 632 pwd->pw_name = name; 633 pwd->pw_class = cnf->default_class ? cnf->default_class : ""; 634 pwd->pw_uid = pw_uidpolicy(cnf, id); 635 pwd->pw_gid = pw_gidpolicy(args, pwd->pw_name, (gid_t) pwd->pw_uid); 636 pwd->pw_change = pw_pwdpolicy(cnf, args); 637 pwd->pw_expire = pw_exppolicy(cnf, args); 638 pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name); 639 pwd->pw_shell = pw_shellpolicy(cnf, args, NULL); 640 lc = login_getpwclass(pwd); 641 if (lc == NULL || login_setcryptfmt(lc, "sha512", NULL) == NULL) 642 warn("setting crypt(3) format"); 643 login_close(lc); 644 pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 645 edited = 1; 646 647 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 648 warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name); 649 } 650 651 /* 652 * Shared add/edit code 653 */ 654 if ((arg = getarg(args, 'c')) != NULL) { 655 char *gecos = pw_checkname(arg->val, 1); 656 if (strcmp(pwd->pw_gecos, gecos) != 0) { 657 pwd->pw_gecos = gecos; 658 edited = 1; 659 } 660 } 661 662 if (conf.fd != -1) 663 edited = set_passwd(pwd, mode == M_UPDATE); 664 665 /* 666 * Special case: -N only displays & exits 667 */ 668 if (conf.dryrun) 669 return print_user(pwd); 670 671 if (mode == M_ADD) { 672 edited = 1; /* Always */ 673 rc = addpwent(pwd); 674 if (rc == -1) 675 errx(EX_IOERR, "user '%s' already exists", 676 pwd->pw_name); 677 else if (rc != 0) 678 err(EX_IOERR, "passwd file update"); 679 if (cnf->nispasswd && *cnf->nispasswd=='/') { 680 rc = addnispwent(cnf->nispasswd, pwd); 681 if (rc == -1) 682 warnx("User '%s' already exists in NIS passwd", pwd->pw_name); 683 else 684 warn("NIS passwd update"); 685 /* NOTE: we treat NIS-only update errors as non-fatal */ 686 } 687 } else if (mode == M_UPDATE && edited) /* Only updated this if required */ 688 perform_chgpwent(name, pwd); 689 690 /* 691 * Ok, user is created or changed - now edit group file 692 */ 693 694 if (mode == M_ADD || getarg(args, 'G') != NULL) { 695 int i, j; 696 /* First remove the user from all group */ 697 SETGRENT(); 698 while ((grp = GETGRENT()) != NULL) { 699 char group[MAXLOGNAME]; 700 if (grp->gr_mem == NULL) 701 continue; 702 for (i = 0; grp->gr_mem[i] != NULL; i++) { 703 if (strcmp(grp->gr_mem[i] , pwd->pw_name) != 0) 704 continue; 705 for (j = i; grp->gr_mem[j] != NULL ; j++) 706 grp->gr_mem[j] = grp->gr_mem[j+1]; 707 strlcpy(group, grp->gr_name, MAXLOGNAME); 708 chggrent(group, grp); 709 } 710 } 711 ENDGRENT(); 712 713 /* now add to group where needed */ 714 for (i = 0; cnf->groups[i] != NULL; i++) { 715 grp = GETGRNAM(cnf->groups[i]); 716 grp = gr_add(grp, pwd->pw_name); 717 /* 718 * grp can only be NULL in 2 cases: 719 * - the new member is already a member 720 * - a problem with memory occurs 721 * in both cases we want to skip now. 722 */ 723 if (grp == NULL) 724 continue; 725 chggrent(cnf->groups[i], grp); 726 free(grp); 727 } 728 } 729 730 731 /* go get a current version of pwd */ 732 pwd = GETPWNAM(name); 733 if (pwd == NULL) { 734 /* This will fail when we rename, so special case that */ 735 if (mode == M_UPDATE && conf.newname != NULL) { 736 name = conf.newname; /* update new name */ 737 pwd = GETPWNAM(name); /* refetch renamed rec */ 738 } 739 } 740 if (pwd == NULL) /* can't go on without this */ 741 errx(EX_NOUSER, "user '%s' disappeared during update", name); 742 743 grp = GETGRGID(pwd->pw_gid); 744 pw_log(cnf, mode, W_USER, "%s(%u):%s(%u):%s:%s:%s", 745 pwd->pw_name, pwd->pw_uid, 746 grp ? grp->gr_name : "unknown", (grp ? grp->gr_gid : (uid_t)-1), 747 pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 748 749 /* 750 * If adding, let's touch and chown the user's mail file. This is not 751 * strictly necessary under BSD with a 0755 maildir but it also 752 * doesn't hurt anything to create the empty mailfile 753 */ 754 if (mode == M_ADD) { 755 if (PWALTDIR() != PWF_ALT) { 756 arg = getarg(args, 'R'); 757 snprintf(path, sizeof(path), "%s%s/%s", 758 arg ? arg->val : "", _PATH_MAILDIR, pwd->pw_name); 759 close(open(path, O_RDWR | O_CREAT, 0600)); /* Preserve contents & 760 * mtime */ 761 chown(path, pwd->pw_uid, pwd->pw_gid); 762 } 763 } 764 765 /* 766 * Let's create and populate the user's home directory. Note 767 * that this also `works' for editing users if -m is used, but 768 * existing files will *not* be overwritten. 769 */ 770 if (PWALTDIR() != PWF_ALT && getarg(args, 'm') != NULL && pwd->pw_dir && 771 *pwd->pw_dir == '/' && pwd->pw_dir[1]) 772 create_and_populate_homedir(pwd); 773 774 /* 775 * Finally, send mail to the new user as well, if we are asked to 776 */ 777 if (mode == M_ADD && !PWALTDIR() && cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) { 778 FILE *pfp = popen(_PATH_SENDMAIL " -t", "w"); 779 780 if (pfp == NULL) 781 warn("sendmail"); 782 else { 783 fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name); 784 while (fgets(line, sizeof(line), fp) != NULL) { 785 /* Do substitutions? */ 786 fputs(line, pfp); 787 } 788 pclose(pfp); 789 pw_log(cnf, mode, W_USER, "%s(%u) new user mail sent", 790 pwd->pw_name, pwd->pw_uid); 791 } 792 fclose(fp); 793 } 794 795 return EXIT_SUCCESS; 796} 797 798 799static uid_t 800pw_uidpolicy(struct userconf * cnf, long id) 801{ 802 struct passwd *pwd; 803 uid_t uid = (uid_t) - 1; 804 805 /* 806 * Check the given uid, if any 807 */ 808 if (id > 0) { 809 uid = (uid_t) id; 810 811 if ((pwd = GETPWUID(uid)) != NULL && conf.checkduplicate) 812 errx(EX_DATAERR, "uid `%u' has already been allocated", pwd->pw_uid); 813 } else { 814 struct bitmap bm; 815 816 /* 817 * We need to allocate the next available uid under one of 818 * two policies a) Grab the first unused uid b) Grab the 819 * highest possible unused uid 820 */ 821 if (cnf->min_uid >= cnf->max_uid) { /* Sanity 822 * claus^H^H^H^Hheck */ 823 cnf->min_uid = 1000; 824 cnf->max_uid = 32000; 825 } 826 bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1); 827 828 /* 829 * Now, let's fill the bitmap from the password file 830 */ 831 SETPWENT(); 832 while ((pwd = GETPWENT()) != NULL) 833 if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid) 834 bm_setbit(&bm, pwd->pw_uid - cnf->min_uid); 835 ENDPWENT(); 836 837 /* 838 * Then apply the policy, with fallback to reuse if necessary 839 */ 840 if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid) 841 uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid); 842 843 /* 844 * Another sanity check 845 */ 846 if (uid < cnf->min_uid || uid > cnf->max_uid) 847 errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used"); 848 bm_dealloc(&bm); 849 } 850 return uid; 851} 852 853 854static uid_t 855pw_gidpolicy(struct cargs * args, char *nam, gid_t prefer) 856{ 857 struct group *grp; 858 gid_t gid = (uid_t) - 1; 859 struct carg *a_gid = getarg(args, 'g'); 860 struct userconf *cnf = conf.userconf; 861 862 /* 863 * If no arg given, see if default can help out 864 */ 865 if (a_gid == NULL && cnf->default_group && *cnf->default_group) 866 a_gid = addarg(args, 'g', cnf->default_group); 867 868 /* 869 * Check the given gid, if any 870 */ 871 SETGRENT(); 872 if (a_gid != NULL) { 873 if ((grp = GETGRNAM(a_gid->val)) == NULL) { 874 gid = (gid_t) atol(a_gid->val); 875 if ((gid == 0 && !isdigit((unsigned char)*a_gid->val)) || (grp = GETGRGID(gid)) == NULL) 876 errx(EX_NOUSER, "group `%s' is not defined", a_gid->val); 877 } 878 gid = grp->gr_gid; 879 } else if ((grp = GETGRNAM(nam)) != NULL && 880 (grp->gr_mem == NULL || grp->gr_mem[0] == NULL)) { 881 gid = grp->gr_gid; /* Already created? Use it anyway... */ 882 } else { 883 struct cargs grpargs; 884 char tmp[32]; 885 886 LIST_INIT(&grpargs); 887 888 /* 889 * We need to auto-create a group with the user's name. We 890 * can send all the appropriate output to our sister routine 891 * bit first see if we can create a group with gid==uid so we 892 * can keep the user and group ids in sync. We purposely do 893 * NOT check the gid range if we can force the sync. If the 894 * user's name dups an existing group, then the group add 895 * function will happily handle that case for us and exit. 896 */ 897 if (GETGRGID(prefer) == NULL) { 898 snprintf(tmp, sizeof(tmp), "%u", prefer); 899 addarg(&grpargs, 'g', tmp); 900 } 901 if (conf.dryrun) { 902 gid = pw_groupnext(cnf, true); 903 } else { 904 pw_group(M_ADD, nam, -1, &grpargs); 905 if ((grp = GETGRNAM(nam)) != NULL) 906 gid = grp->gr_gid; 907 } 908 a_gid = LIST_FIRST(&grpargs); 909 while (a_gid != NULL) { 910 struct carg *t = LIST_NEXT(a_gid, list); 911 LIST_REMOVE(a_gid, list); 912 a_gid = t; 913 } 914 } 915 ENDGRENT(); 916 return gid; 917} 918 919 920static time_t 921pw_pwdpolicy(struct userconf * cnf, struct cargs * args) 922{ 923 time_t result = 0; 924 time_t now = time(NULL); 925 struct carg *arg = getarg(args, 'p'); 926 927 if (arg != NULL) { 928 if ((result = parse_date(now, arg->val)) == now) 929 errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 930 } else if (cnf->password_days > 0) 931 result = now + ((long) cnf->password_days * 86400L); 932 return result; 933} 934 935 936static time_t 937pw_exppolicy(struct userconf * cnf, struct cargs * args) 938{ 939 time_t result = 0; 940 time_t now = time(NULL); 941 struct carg *arg = getarg(args, 'e'); 942 943 if (arg != NULL) { 944 if ((result = parse_date(now, arg->val)) == now) 945 errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 946 } else if (cnf->expire_days > 0) 947 result = now + ((long) cnf->expire_days * 86400L); 948 return result; 949} 950 951 952static char * 953pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user) 954{ 955 struct carg *arg = getarg(args, 'd'); 956 static char home[128]; 957 958 if (arg) 959 return (arg->val); 960 961 if (cnf->home == NULL || *cnf->home == '\0') 962 errx(EX_CONFIG, "no base home directory set"); 963 snprintf(home, sizeof(home), "%s/%s", cnf->home, user); 964 965 return (home); 966} 967 968static char * 969shell_path(char const * path, char *shells[], char *sh) 970{ 971 if (sh != NULL && (*sh == '/' || *sh == '\0')) 972 return sh; /* specified full path or forced none */ 973 else { 974 char *p; 975 char paths[_UC_MAXLINE]; 976 977 /* 978 * We need to search paths 979 */ 980 strlcpy(paths, path, sizeof(paths)); 981 for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) { 982 int i; 983 static char shellpath[256]; 984 985 if (sh != NULL) { 986 snprintf(shellpath, sizeof(shellpath), "%s/%s", p, sh); 987 if (access(shellpath, X_OK) == 0) 988 return shellpath; 989 } else 990 for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) { 991 snprintf(shellpath, sizeof(shellpath), "%s/%s", p, shells[i]); 992 if (access(shellpath, X_OK) == 0) 993 return shellpath; 994 } 995 } 996 if (sh == NULL) 997 errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh); 998 errx(EX_CONFIG, "no default shell available or defined"); 999 return NULL; 1000 } 1001} 1002 1003 1004static char * 1005pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell) 1006{ 1007 char *sh = newshell; 1008 struct carg *arg = getarg(args, 's'); 1009 1010 if (newshell == NULL && arg != NULL) 1011 sh = arg->val; 1012 return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default); 1013} 1014 1015#define SALTSIZE 32 1016 1017static char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./"; 1018 1019char * 1020pw_pwcrypt(char *password) 1021{ 1022 int i; 1023 char salt[SALTSIZE + 1]; 1024 char *cryptpw; 1025 1026 static char buf[256]; 1027 1028 /* 1029 * Calculate a salt value 1030 */ 1031 for (i = 0; i < SALTSIZE; i++) 1032 salt[i] = chars[arc4random_uniform(sizeof(chars) - 1)]; 1033 salt[SALTSIZE] = '\0'; 1034 1035 cryptpw = crypt(password, salt); 1036 if (cryptpw == NULL) 1037 errx(EX_CONFIG, "crypt(3) failure"); 1038 return strcpy(buf, cryptpw); 1039} 1040 1041 1042static char * 1043pw_password(struct userconf * cnf, struct cargs * args, char const * user) 1044{ 1045 int i, l; 1046 char pwbuf[32]; 1047 1048 switch (cnf->default_password) { 1049 case -1: /* Random password */ 1050 l = (arc4random() % 8 + 8); /* 8 - 16 chars */ 1051 for (i = 0; i < l; i++) 1052 pwbuf[i] = chars[arc4random_uniform(sizeof(chars)-1)]; 1053 pwbuf[i] = '\0'; 1054 1055 /* 1056 * We give this information back to the user 1057 */ 1058 if (conf.fd == -1 && !conf.dryrun) { 1059 if (isatty(STDOUT_FILENO)) 1060 printf("Password for '%s' is: ", user); 1061 printf("%s\n", pwbuf); 1062 fflush(stdout); 1063 } 1064 break; 1065 1066 case -2: /* No password at all! */ 1067 return ""; 1068 1069 case 0: /* No login - default */ 1070 default: 1071 return "*"; 1072 1073 case 1: /* user's name */ 1074 strlcpy(pwbuf, user, sizeof(pwbuf)); 1075 break; 1076 } 1077 return pw_pwcrypt(pwbuf); 1078} 1079 1080static int 1081pw_userdel(char *name, long id) 1082{ 1083 struct passwd *pwd = NULL; 1084 char file[MAXPATHLEN]; 1085 char home[MAXPATHLEN]; 1086 uid_t uid; 1087 struct group *gr, *grp; 1088 char grname[LOGNAMESIZE]; 1089 int rc; 1090 struct stat st; 1091 1092 if (id < 0 && name == NULL) 1093 errx(EX_DATAERR, "username or id required"); 1094 1095 pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id); 1096 if (pwd == NULL) { 1097 if (name == NULL) 1098 errx(EX_NOUSER, "no such uid `%ld'", id); 1099 errx(EX_NOUSER, "no such user `%s'", name); 1100 } 1101 uid = pwd->pw_uid; 1102 if (name == NULL) 1103 name = pwd->pw_name; 1104 1105 if (strcmp(pwd->pw_name, "root") == 0) 1106 errx(EX_DATAERR, "cannot remove user 'root'"); 1107 1108 if (!PWALTDIR()) { 1109 /* 1110 * Remove opie record from /etc/opiekeys 1111 */ 1112 1113 rmopie(pwd->pw_name); 1114 1115 /* 1116 * Remove crontabs 1117 */ 1118 snprintf(file, sizeof(file), "/var/cron/tabs/%s", pwd->pw_name); 1119 if (access(file, F_OK) == 0) { 1120 snprintf(file, sizeof(file), "crontab -u %s -r", pwd->pw_name); 1121 system(file); 1122 } 1123 } 1124 /* 1125 * Save these for later, since contents of pwd may be 1126 * invalidated by deletion 1127 */ 1128 snprintf(file, sizeof(file), "%s/%s", _PATH_MAILDIR, pwd->pw_name); 1129 strlcpy(home, pwd->pw_dir, sizeof(home)); 1130 gr = GETGRGID(pwd->pw_gid); 1131 if (gr != NULL) 1132 strlcpy(grname, gr->gr_name, LOGNAMESIZE); 1133 else 1134 grname[0] = '\0'; 1135 1136 rc = delpwent(pwd); 1137 if (rc == -1) 1138 err(EX_IOERR, "user '%s' does not exist", pwd->pw_name); 1139 else if (rc != 0) 1140 err(EX_IOERR, "passwd update"); 1141 1142 if (conf.userconf->nispasswd && *conf.userconf->nispasswd=='/') { 1143 rc = delnispwent(conf.userconf->nispasswd, name); 1144 if (rc == -1) 1145 warnx("WARNING: user '%s' does not exist in NIS passwd", 1146 pwd->pw_name); 1147 else if (rc != 0) 1148 warn("WARNING: NIS passwd update"); 1149 /* non-fatal */ 1150 } 1151 1152 grp = GETGRNAM(name); 1153 if (grp != NULL && 1154 (grp->gr_mem == NULL || *grp->gr_mem == NULL) && 1155 strcmp(name, grname) == 0) 1156 delgrent(GETGRNAM(name)); 1157 SETGRENT(); 1158 while ((grp = GETGRENT()) != NULL) { 1159 int i, j; 1160 char group[MAXLOGNAME]; 1161 if (grp->gr_mem == NULL) 1162 continue; 1163 1164 for (i = 0; grp->gr_mem[i] != NULL; i++) { 1165 if (strcmp(grp->gr_mem[i], name) != 0) 1166 continue; 1167 1168 for (j = i; grp->gr_mem[j] != NULL; j++) 1169 grp->gr_mem[j] = grp->gr_mem[j+1]; 1170 strlcpy(group, grp->gr_name, MAXLOGNAME); 1171 chggrent(group, grp); 1172 } 1173 } 1174 ENDGRENT(); 1175 1176 pw_log(conf.userconf, M_DELETE, W_USER, "%s(%u) account removed", name, 1177 uid); 1178 1179 if (!PWALTDIR()) { 1180 /* 1181 * Remove mail file 1182 */ 1183 remove(file); 1184 1185 /* 1186 * Remove at jobs 1187 */ 1188 if (getpwuid(uid) == NULL) 1189 rmat(uid); 1190 1191 /* 1192 * Remove home directory and contents 1193 */ 1194 if (conf.deletehome && *home == '/' && getpwuid(uid) == NULL && 1195 stat(home, &st) != -1) { 1196 rm_r(home, uid); 1197 pw_log(conf.userconf, M_DELETE, W_USER, "%s(%u) home '%s' %sremoved", 1198 name, uid, home, 1199 stat(home, &st) == -1 ? "" : "not completely "); 1200 } 1201 } 1202 1203 return (EXIT_SUCCESS); 1204} 1205 1206static int 1207print_user(struct passwd * pwd) 1208{ 1209 if (!conf.pretty) { 1210 char *buf; 1211 1212 buf = conf.v7 ? pw_make_v7(pwd) : pw_make(pwd); 1213 printf("%s\n", buf); 1214 free(buf); 1215 } else { 1216 int j; 1217 char *p; 1218 struct group *grp = GETGRGID(pwd->pw_gid); 1219 char uname[60] = "User &", office[60] = "[None]", 1220 wphone[60] = "[None]", hphone[60] = "[None]"; 1221 char acexpire[32] = "[None]", pwexpire[32] = "[None]"; 1222 struct tm * tptr; 1223 1224 if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { 1225 strlcpy(uname, p, sizeof(uname)); 1226 if ((p = strtok(NULL, ",")) != NULL) { 1227 strlcpy(office, p, sizeof(office)); 1228 if ((p = strtok(NULL, ",")) != NULL) { 1229 strlcpy(wphone, p, sizeof(wphone)); 1230 if ((p = strtok(NULL, "")) != NULL) { 1231 strlcpy(hphone, p, 1232 sizeof(hphone)); 1233 } 1234 } 1235 } 1236 } 1237 /* 1238 * Handle '&' in gecos field 1239 */ 1240 if ((p = strchr(uname, '&')) != NULL) { 1241 int l = strlen(pwd->pw_name); 1242 int m = strlen(p); 1243 1244 memmove(p + l, p + 1, m); 1245 memmove(p, pwd->pw_name, l); 1246 *p = (char) toupper((unsigned char)*p); 1247 } 1248 if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL) 1249 strftime(acexpire, sizeof acexpire, "%c", tptr); 1250 if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL) 1251 strftime(pwexpire, sizeof pwexpire, "%c", tptr); 1252 printf("Login Name: %-15s #%-12u Group: %-15s #%u\n" 1253 " Full Name: %s\n" 1254 " Home: %-26.26s Class: %s\n" 1255 " Shell: %-26.26s Office: %s\n" 1256 "Work Phone: %-26.26s Home Phone: %s\n" 1257 "Acc Expire: %-26.26s Pwd Expire: %s\n", 1258 pwd->pw_name, pwd->pw_uid, 1259 grp ? grp->gr_name : "(invalid)", pwd->pw_gid, 1260 uname, pwd->pw_dir, pwd->pw_class, 1261 pwd->pw_shell, office, wphone, hphone, 1262 acexpire, pwexpire); 1263 SETGRENT(); 1264 j = 0; 1265 while ((grp=GETGRENT()) != NULL) 1266 { 1267 int i = 0; 1268 if (grp->gr_mem != NULL) { 1269 while (grp->gr_mem[i] != NULL) 1270 { 1271 if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) 1272 { 1273 printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name); 1274 break; 1275 } 1276 ++i; 1277 } 1278 } 1279 } 1280 ENDGRENT(); 1281 printf("%s", j ? "\n" : ""); 1282 } 1283 return EXIT_SUCCESS; 1284} 1285 1286char * 1287pw_checkname(char *name, int gecos) 1288{ 1289 char showch[8]; 1290 const char *badchars, *ch, *showtype; 1291 int reject; 1292 1293 ch = name; 1294 reject = 0; 1295 if (gecos) { 1296 /* See if the name is valid as a gecos (comment) field. */ 1297 badchars = ":!@"; 1298 showtype = "gecos field"; 1299 } else { 1300 /* See if the name is valid as a userid or group. */ 1301 badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\""; 1302 showtype = "userid/group name"; 1303 /* Userids and groups can not have a leading '-'. */ 1304 if (*ch == '-') 1305 reject = 1; 1306 } 1307 if (!reject) { 1308 while (*ch) { 1309 if (strchr(badchars, *ch) != NULL || *ch < ' ' || 1310 *ch == 127) { 1311 reject = 1; 1312 break; 1313 } 1314 /* 8-bit characters are only allowed in GECOS fields */ 1315 if (!gecos && (*ch & 0x80)) { 1316 reject = 1; 1317 break; 1318 } 1319 ch++; 1320 } 1321 } 1322 /* 1323 * A `$' is allowed as the final character for userids and groups, 1324 * mainly for the benefit of samba. 1325 */ 1326 if (reject && !gecos) { 1327 if (*ch == '$' && *(ch + 1) == '\0') { 1328 reject = 0; 1329 ch++; 1330 } 1331 } 1332 if (reject) { 1333 snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127) 1334 ? "`%c'" : "0x%02x", *ch); 1335 errx(EX_DATAERR, "invalid character %s at position %td in %s", 1336 showch, (ch - name), showtype); 1337 } 1338 if (!gecos && (ch - name) > LOGNAMESIZE) 1339 errx(EX_DATAERR, "name too long `%s' (max is %d)", name, 1340 LOGNAMESIZE); 1341 1342 return (name); 1343} 1344 1345 1346static void 1347rmat(uid_t uid) 1348{ 1349 DIR *d = opendir("/var/at/jobs"); 1350 1351 if (d != NULL) { 1352 struct dirent *e; 1353 1354 while ((e = readdir(d)) != NULL) { 1355 struct stat st; 1356 1357 if (strncmp(e->d_name, ".lock", 5) != 0 && 1358 stat(e->d_name, &st) == 0 && 1359 !S_ISDIR(st.st_mode) && 1360 st.st_uid == uid) { 1361 char tmp[MAXPATHLEN]; 1362 1363 snprintf(tmp, sizeof(tmp), "/usr/bin/atrm %s", e->d_name); 1364 system(tmp); 1365 } 1366 } 1367 closedir(d); 1368 } 1369} 1370 1371static void 1372rmopie(char const * name) 1373{ 1374 static const char etcopie[] = "/etc/opiekeys"; 1375 FILE *fp = fopen(etcopie, "r+"); 1376 1377 if (fp != NULL) { 1378 char tmp[1024]; 1379 off_t atofs = 0; 1380 int length = strlen(name); 1381 1382 while (fgets(tmp, sizeof tmp, fp) != NULL) { 1383 if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') { 1384 if (fseek(fp, atofs, SEEK_SET) == 0) { 1385 fwrite("#", 1, 1, fp); /* Comment username out */ 1386 } 1387 break; 1388 } 1389 atofs = ftell(fp); 1390 } 1391 /* 1392 * If we got an error of any sort, don't update! 1393 */ 1394 fclose(fp); 1395 } 1396} 1397 1398