1 /* $NetBSD: user.c,v 1.52 2002/06/01 06:28:06 grant Exp $ */ 2 3 /* 4 * Copyright (c) 1999 Alistair G. Crooks. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Alistair G. Crooks. 17 * 4. The name of the author may not be used to endorse or promote 18 * products derived from this software without specific prior written 19 * permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 22 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 27 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 30 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 31 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 #include <sys/cdefs.h> 34 35 #ifndef lint 36 __COPYRIGHT("@(#) Copyright (c) 1999 \ 37 The NetBSD Foundation, Inc. All rights reserved."); 38 __RCSID("$NetBSD: user.c,v 1.52 2002/06/01 06:28:06 grant Exp $"); 39 #endif 40 41 #include <sys/types.h> 42 #include <sys/param.h> 43 #include <sys/stat.h> 44 45 #include <ctype.h> 46 #include <dirent.h> 47 #include <err.h> 48 #include <fcntl.h> 49 #include <grp.h> 50 #include <paths.h> 51 #include <pwd.h> 52 #include <stdarg.h> 53 #include <stdio.h> 54 #include <stdlib.h> 55 #include <string.h> 56 #include <time.h> 57 #include <unistd.h> 58 #include <util.h> 59 60 #include "defs.h" 61 #include "usermgmt.h" 62 63 64 /* this struct describes a uid range */ 65 typedef struct range_t { 66 int r_from; /* low uid */ 67 int r_to; /* high uid */ 68 } range_t; 69 70 /* this struct encapsulates the user information */ 71 typedef struct user_t { 72 int u_flags; /* see below */ 73 int u_uid; /* uid of user */ 74 char *u_password; /* encrypted password */ 75 char *u_comment; /* comment field */ 76 char *u_home; /* home directory */ 77 char *u_primgrp; /* primary group */ 78 int u_groupc; /* # of secondary groups */ 79 char *u_groupv[NGROUPS_MAX]; /* secondary groups */ 80 char *u_shell; /* user's shell */ 81 char *u_basedir; /* base directory for home */ 82 char *u_expire; /* when password will expire */ 83 char *u_inactive; /* when account will expire */ 84 char *u_skeldir; /* directory for startup files */ 85 char *u_class; /* login class */ 86 unsigned u_rsize; /* size of range array */ 87 unsigned u_rc; /* # of ranges */ 88 range_t *u_rv; /* the ranges */ 89 unsigned u_defrc; /* # of ranges in defaults */ 90 int u_preserve; /* preserve uids on deletion */ 91 } user_t; 92 93 /* flags for which fields of the user_t replace the passwd entry */ 94 enum { 95 F_COMMENT = 0x0001, 96 F_DUPUID = 0x0002, 97 F_EXPIRE = 0x0004, 98 F_GROUP = 0x0008, 99 F_HOMEDIR = 0x0010, 100 F_MKDIR = 0x0020, 101 F_INACTIVE = 0x0040, 102 F_PASSWORD = 0x0080, 103 F_SECGROUP = 0x0100, 104 F_SHELL = 0x0200, 105 F_UID = 0x0400, 106 F_USERNAME = 0x0800, 107 F_CLASS = 0x1000 108 }; 109 110 #define CONFFILE "/etc/usermgmt.conf" 111 112 #ifndef DEF_GROUP 113 #define DEF_GROUP "users" 114 #endif 115 116 #ifndef DEF_BASEDIR 117 #define DEF_BASEDIR "/home" 118 #endif 119 120 #ifndef DEF_SKELDIR 121 #define DEF_SKELDIR "/etc/skel" 122 #endif 123 124 #ifndef DEF_SHELL 125 #define DEF_SHELL _PATH_CSHELL 126 #endif 127 128 #ifndef DEF_COMMENT 129 #define DEF_COMMENT "" 130 #endif 131 132 #ifndef DEF_LOWUID 133 #define DEF_LOWUID 1000 134 #endif 135 136 #ifndef DEF_HIGHUID 137 #define DEF_HIGHUID 60000 138 #endif 139 140 #ifndef DEF_INACTIVE 141 #define DEF_INACTIVE 0 142 #endif 143 144 #ifndef DEF_EXPIRE 145 #define DEF_EXPIRE NULL 146 #endif 147 148 #ifndef DEF_CLASS 149 #define DEF_CLASS "" 150 #endif 151 152 #ifndef WAITSECS 153 #define WAITSECS 10 154 #endif 155 156 #ifndef NOBODY_UID 157 #define NOBODY_UID 32767 158 #endif 159 160 /* some useful constants */ 161 enum { 162 MaxShellNameLen = 256, 163 MaxFileNameLen = MAXPATHLEN, 164 MaxUserNameLen = 32, 165 MaxFieldNameLen = 32, 166 MaxCommandLen = 2048, 167 MaxEntryLen = 2048, 168 PasswordLength = 13, 169 170 LowGid = DEF_LOWUID, 171 HighGid = DEF_HIGHUID 172 }; 173 174 /* Full paths of programs used here */ 175 #define CHMOD "/bin/chmod" 176 #define CHOWN "/usr/sbin/chown" 177 #define MKDIR "/bin/mkdir" 178 #define MV "/bin/mv" 179 #define NOLOGIN "/sbin/nologin" 180 #define PAX "/bin/pax" 181 #define RM "/bin/rm" 182 183 #define UNSET_INACTIVE "Null (unset)" 184 #define UNSET_EXPIRY "Null (unset)" 185 186 static int asystem(const char *fmt, ...) 187 __attribute__((__format__(__printf__, 1, 2))); 188 189 static int verbose; 190 191 /* if *cpp is non-null, free it, then assign `n' chars of `s' to it */ 192 static void 193 memsave(char **cpp, char *s, size_t n) 194 { 195 if (*cpp != NULL) { 196 FREE(*cpp); 197 } 198 NEWARRAY(char, *cpp, n + 1, exit(1)); 199 (void) memcpy(*cpp, s, n); 200 (*cpp)[n] = '\0'; 201 } 202 203 /* a replacement for system(3) */ 204 static int 205 asystem(const char *fmt, ...) 206 { 207 va_list vp; 208 char buf[MaxCommandLen]; 209 int ret; 210 211 va_start(vp, fmt); 212 (void) vsnprintf(buf, sizeof(buf), fmt, vp); 213 va_end(vp); 214 if (verbose) { 215 (void) printf("Command: %s\n", buf); 216 } 217 if ((ret = system(buf)) != 0) { 218 warnx("[Warning] can't system `%s'", buf); 219 } 220 return ret; 221 } 222 223 /* remove a users home directory, returning 1 for success (ie, no problems encountered) */ 224 static int 225 removehomedir(const char *user, int uid, const char *dir) 226 { 227 struct stat st; 228 229 /* userid not root? */ 230 if (uid == 0) { 231 warnx("Not deleting home directory `%s'; userid is 0", dir); 232 return 0; 233 } 234 235 /* directory exists (and is a directory!) */ 236 if (stat(dir, &st) < 0) { 237 warnx("Home directory `%s' doesn't exist", dir); 238 return 0; 239 } 240 if (!S_ISDIR(st.st_mode)) { 241 warnx("Home directory `%s' is not a directory", dir); 242 return 0; 243 } 244 245 /* userid matches directory owner? */ 246 if (st.st_uid != uid) { 247 warnx("User `%s' doesn't own directory `%s', not removed\n", user, dir); 248 return 0; 249 } 250 251 (void) seteuid(uid); 252 /* we add the "|| true" to keep asystem() quiet if there is a non-zero exit status. */ 253 (void) asystem("%s -rf %s > /dev/null 2>&1 || true", RM, dir); 254 (void) seteuid(0); 255 if (rmdir(dir) < 0) { 256 warnx("Unable to remove all files in `%s'\n", dir); 257 return 0; 258 } 259 return 1; 260 } 261 262 #define NetBSD_1_4_K 104110000 263 264 #if defined(__NetBSD_Version__) && (__NetBSD_Version__ < NetBSD_1_4_K) 265 /* bounds checking strncpy */ 266 static int 267 strlcpy(char *to, char *from, size_t tosize) 268 { 269 size_t n; 270 int fromsize; 271 272 fromsize = strlen(from); 273 n = MIN(tosize - 1, fromsize); 274 (void) memcpy(to, from, n); 275 to[n] = '\0'; 276 return fromsize; 277 } 278 #endif /* NetBSD < 1.4K */ 279 280 /* 281 * Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com> 282 * All rights reserved. 283 * 284 * Redistribution and use in source and binary forms, with or without 285 * modification, are permitted provided that the following conditions 286 * are met: 287 * 1. Redistributions of source code must retain the above copyright 288 * notice, this list of conditions and the following disclaimer. 289 * 2. Redistributions in binary form must reproduce the above copyright 290 * notice, this list of conditions and the following disclaimer in the 291 * documentation and/or other materials provided with the distribution. 292 * 3. The name of the author may not be used to endorse or promote products 293 * derived from this software without specific prior written permission. 294 * 295 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 296 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 297 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 298 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 299 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 300 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 301 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 302 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 303 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 304 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 305 */ 306 307 /* 308 * research has shown that NetBSD 1.3H was the first version of -current 309 * with asprintf in libc. agc 310 */ 311 #define NetBSD_1_3_H 103080000 312 313 #if defined(__NetBSD_Version__) && (__NetBSD_Version__ < NetBSD_1_3_H) 314 315 int 316 asprintf(char **str, char const *fmt, ...) 317 { 318 int ret; 319 va_list ap; 320 FILE f; 321 unsigned char *_base; 322 323 f._flags = __SWR | __SSTR | __SALC; 324 f._bf._base = f._p = (unsigned char *)malloc(128); 325 if (f._bf._base == NULL) 326 goto err; 327 f._bf._size = f._w = 127; /* Leave room for the NUL */ 328 va_start(ap, fmt); 329 ret = vfprintf(&f, fmt, ap); 330 va_end(ap); 331 if (ret == -1) 332 goto err; 333 *f._p = '\0'; 334 _base = realloc(f._bf._base, (size_t)(ret + 1)); 335 if (_base == NULL) 336 goto err; 337 *str = (char *)_base; 338 return (ret); 339 340 err: 341 if (f._bf._base) 342 free(f._bf._base); 343 *str = NULL; 344 return (-1); 345 } 346 #endif /* NetBSD < 1.3H */ 347 348 /* return 1 if all of `s' is numeric */ 349 static int 350 is_number(char *s) 351 { 352 for ( ; *s ; s++) { 353 if (!isdigit(*s)) { 354 return 0; 355 } 356 } 357 return 1; 358 } 359 360 /* 361 * check that the effective uid is 0 - called from funcs which will 362 * modify data and config files. 363 */ 364 static void 365 checkeuid(void) 366 { 367 if (geteuid() != 0) { 368 errx(EXIT_FAILURE, "Program must be run as root"); 369 } 370 } 371 372 /* copy any dot files into the user's home directory */ 373 static int 374 copydotfiles(char *skeldir, int uid, int gid, char *dir) 375 { 376 struct dirent *dp; 377 DIR *dirp; 378 int n; 379 380 if ((dirp = opendir(skeldir)) == NULL) { 381 warn("can't open source . files dir `%s'", skeldir); 382 return 0; 383 } 384 for (n = 0; (dp = readdir(dirp)) != NULL && n == 0 ; ) { 385 if (strcmp(dp->d_name, ".") == 0 || 386 strcmp(dp->d_name, "..") == 0) { 387 continue; 388 } 389 n = 1; 390 } 391 (void) closedir(dirp); 392 if (n == 0) { 393 warnx("No \"dot\" initialisation files found"); 394 } else { 395 (void) asystem("cd %s && %s -rw -pe %s . %s", 396 skeldir, PAX, (verbose) ? "-v" : "", dir); 397 } 398 (void) asystem("%s -R -h %d:%d %s", CHOWN, uid, gid, dir); 399 (void) asystem("%s -R u+w %s", CHMOD, dir); 400 return n; 401 } 402 403 /* create a group entry with gid `gid' */ 404 static int 405 creategid(char *group, int gid, char *name) 406 { 407 struct stat st; 408 FILE *from; 409 FILE *to; 410 char buf[MaxEntryLen]; 411 char f[MaxFileNameLen]; 412 int fd; 413 int cc; 414 415 if (getgrnam(group) != NULL) { 416 warnx("group `%s' already exists", group); 417 return 0; 418 } 419 if ((from = fopen(_PATH_GROUP, "r")) == NULL) { 420 warn("can't create gid for `%s': can't open `%s'", name, _PATH_GROUP); 421 return 0; 422 } 423 if (flock(fileno(from), LOCK_EX | LOCK_NB) < 0) { 424 warn("can't lock `%s'", _PATH_GROUP); 425 } 426 (void) fstat(fileno(from), &st); 427 (void) snprintf(f, sizeof(f), "%s.XXXXXX", _PATH_GROUP); 428 if ((fd = mkstemp(f)) < 0) { 429 (void) fclose(from); 430 warn("can't create gid: mkstemp failed"); 431 return 0; 432 } 433 if ((to = fdopen(fd, "w")) == NULL) { 434 (void) fclose(from); 435 (void) close(fd); 436 (void) unlink(f); 437 warn("can't create gid: fdopen `%s' failed", f); 438 return 0; 439 } 440 while ((cc = fread(buf, sizeof(char), sizeof(buf), from)) > 0) { 441 if (fwrite(buf, sizeof(char), (unsigned) cc, to) != cc) { 442 (void) fclose(from); 443 (void) close(fd); 444 (void) unlink(f); 445 warn("can't create gid: short write to `%s'", f); 446 return 0; 447 } 448 } 449 (void) fprintf(to, "%s:*:%d:%s\n", group, gid, name); 450 (void) fclose(from); 451 (void) fclose(to); 452 if (rename(f, _PATH_GROUP) < 0) { 453 (void) unlink(f); 454 warn("can't create gid: can't rename `%s' to `%s'", f, _PATH_GROUP); 455 return 0; 456 } 457 (void) chmod(_PATH_GROUP, st.st_mode & 07777); 458 return 1; 459 } 460 461 /* modify the group entry with name `group' to be newent */ 462 static int 463 modify_gid(char *group, char *newent) 464 { 465 struct stat st; 466 FILE *from; 467 FILE *to; 468 char buf[MaxEntryLen]; 469 char f[MaxFileNameLen]; 470 char *colon; 471 int groupc; 472 int entc; 473 int fd; 474 int cc; 475 476 if ((from = fopen(_PATH_GROUP, "r")) == NULL) { 477 warn("can't create gid for `%s': can't open `%s'", group, _PATH_GROUP); 478 return 0; 479 } 480 if (flock(fileno(from), LOCK_EX | LOCK_NB) < 0) { 481 warn("can't lock `%s'", _PATH_GROUP); 482 } 483 (void) fstat(fileno(from), &st); 484 (void) snprintf(f, sizeof(f), "%s.XXXXXX", _PATH_GROUP); 485 if ((fd = mkstemp(f)) < 0) { 486 (void) fclose(from); 487 warn("can't create gid: mkstemp failed"); 488 return 0; 489 } 490 if ((to = fdopen(fd, "w")) == NULL) { 491 (void) fclose(from); 492 (void) close(fd); 493 (void) unlink(f); 494 warn("can't create gid: fdopen `%s' failed", f); 495 return 0; 496 } 497 groupc = strlen(group); 498 while (fgets(buf, sizeof(buf), from) != NULL) { 499 cc = strlen(buf); 500 if ((colon = strchr(buf, ':')) == NULL) { 501 warn("badly formed entry `%s'", buf); 502 continue; 503 } 504 entc = (int)(colon - buf); 505 if (entc == groupc && strncmp(group, buf, (unsigned) entc) == 0) { 506 if (newent == NULL) { 507 continue; 508 } else { 509 cc = strlen(newent); 510 (void) strlcpy(buf, newent, sizeof(buf)); 511 } 512 } 513 if (fwrite(buf, sizeof(char), (unsigned) cc, to) != cc) { 514 (void) fclose(from); 515 (void) close(fd); 516 (void) unlink(f); 517 warn("can't create gid: short write to `%s'", f); 518 return 0; 519 } 520 } 521 (void) fclose(from); 522 (void) fclose(to); 523 if (rename(f, _PATH_GROUP) < 0) { 524 (void) unlink(f); 525 warn("can't create gid: can't rename `%s' to `%s'", f, _PATH_GROUP); 526 return 0; 527 } 528 (void) chmod(_PATH_GROUP, st.st_mode & 07777); 529 return 1; 530 } 531 532 /* modify the group entries for all `groups', by adding `user' */ 533 static int 534 append_group(char *user, int ngroups, char **groups) 535 { 536 struct group *grp; 537 struct stat st; 538 FILE *from; 539 FILE *to; 540 char buf[MaxEntryLen]; 541 char f[MaxFileNameLen]; 542 char *colon; 543 int groupc; 544 int entc; 545 int fd; 546 int nc; 547 int cc; 548 int i; 549 int j; 550 551 for (i = 0 ; i < ngroups ; i++) { 552 if ((grp = getgrnam(groups[i])) == NULL) { 553 warnx("can't append group `%s' for user `%s'", groups[i], user); 554 } else { 555 for (j = 0 ; grp->gr_mem[j] ; j++) { 556 if (strcmp(user, grp->gr_mem[j]) == 0) { 557 /* already in it */ 558 groups[i] = ""; 559 } 560 } 561 } 562 } 563 if ((from = fopen(_PATH_GROUP, "r")) == NULL) { 564 warn("can't append group for `%s': can't open `%s'", user, _PATH_GROUP); 565 return 0; 566 } 567 if (flock(fileno(from), LOCK_EX | LOCK_NB) < 0) { 568 warn("can't lock `%s'", _PATH_GROUP); 569 } 570 (void) fstat(fileno(from), &st); 571 (void) snprintf(f, sizeof(f), "%s.XXXXXX", _PATH_GROUP); 572 if ((fd = mkstemp(f)) < 0) { 573 (void) fclose(from); 574 warn("can't create gid: mkstemp failed"); 575 return 0; 576 } 577 if ((to = fdopen(fd, "w")) == NULL) { 578 (void) fclose(from); 579 (void) close(fd); 580 (void) unlink(f); 581 warn("can't create gid: fdopen `%s' failed", f); 582 return 0; 583 } 584 while (fgets(buf, sizeof(buf), from) != NULL) { 585 cc = strlen(buf); 586 if ((colon = strchr(buf, ':')) == NULL) { 587 warn("badly formed entry `%s'", buf); 588 continue; 589 } 590 entc = (int)(colon - buf); 591 for (i = 0 ; i < ngroups ; i++) { 592 if ((groupc = strlen(groups[i])) == 0) { 593 continue; 594 } 595 if (entc == groupc && strncmp(groups[i], buf, (unsigned) entc) == 0) { 596 if ((nc = snprintf(&buf[cc - 1], 597 sizeof(buf) - cc + 1, 598 "%s%s\n", 599 (buf[cc - 2] == ':') ? "" : ",", 600 user)) < 0) { 601 warnx("Warning: group `%s' entry too long", groups[i]); 602 } 603 cc += nc - 1; 604 } 605 } 606 if (fwrite(buf, sizeof(char), (unsigned) cc, to) != cc) { 607 (void) fclose(from); 608 (void) close(fd); 609 (void) unlink(f); 610 warn("can't create gid: short write to `%s'", f); 611 return 0; 612 } 613 } 614 (void) fclose(from); 615 (void) fclose(to); 616 if (rename(f, _PATH_GROUP) < 0) { 617 (void) unlink(f); 618 warn("can't create gid: can't rename `%s' to `%s'", f, _PATH_GROUP); 619 return 0; 620 } 621 (void) chmod(_PATH_GROUP, st.st_mode & 07777); 622 return 1; 623 } 624 625 /* return 1 if `login' is a valid login name */ 626 static int 627 valid_login(char *login) 628 { 629 char *cp; 630 631 for (cp = login ; *cp ; cp++) { 632 if (!isalnum(*cp) && *cp != '.' && *cp != '_' && *cp != '-') { 633 return 0; 634 } 635 } 636 return 1; 637 } 638 639 /* return 1 if `group' is a valid group name */ 640 static int 641 valid_group(char *group) 642 { 643 char *cp; 644 645 for (cp = group ; *cp ; cp++) { 646 if (!isalnum(*cp)) { 647 return 0; 648 } 649 } 650 return 1; 651 } 652 653 /* find the next gid in the range lo .. hi */ 654 static int 655 getnextgid(int *gidp, int lo, int hi) 656 { 657 for (*gidp = lo ; *gidp < hi ; *gidp += 1) { 658 if (getgrgid((gid_t)*gidp) == NULL) { 659 return 1; 660 } 661 } 662 return 0; 663 } 664 665 #ifdef EXTENSIONS 666 /* save a range of uids */ 667 static int 668 save_range(user_t *up, char *cp) 669 { 670 int from; 671 int to; 672 int i; 673 674 if (up->u_rsize == 0) { 675 up->u_rsize = 32; 676 NEWARRAY(range_t, up->u_rv, up->u_rsize, return(0)); 677 } else if (up->u_rc == up->u_rsize) { 678 up->u_rsize *= 2; 679 RENEW(range_t, up->u_rv, up->u_rsize, return(0)); 680 } 681 if (up->u_rv && sscanf(cp, "%d..%d", &from, &to) == 2) { 682 for (i = up->u_defrc ; i < up->u_rc ; i++) { 683 if (up->u_rv[i].r_from == from && up->u_rv[i].r_to == to) { 684 break; 685 } 686 } 687 if (i == up->u_rc) { 688 up->u_rv[up->u_rc].r_from = from; 689 up->u_rv[up->u_rc].r_to = to; 690 up->u_rc += 1; 691 } 692 } else { 693 warnx("Bad range `%s'", cp); 694 return 0; 695 } 696 return 1; 697 } 698 #endif 699 700 /* set the defaults in the defaults file */ 701 static int 702 setdefaults(user_t *up) 703 { 704 char template[MaxFileNameLen]; 705 FILE *fp; 706 int ret; 707 int fd; 708 #ifdef EXTENSIONS 709 int i; 710 #endif 711 712 (void) snprintf(template, sizeof(template), "%s.XXXXXX", CONFFILE); 713 if ((fd = mkstemp(template)) < 0) { 714 warnx("can't mkstemp `%s' for writing", CONFFILE); 715 return 0; 716 } 717 if ((fp = fdopen(fd, "w")) == NULL) { 718 warn("can't fdopen `%s' for writing", CONFFILE); 719 return 0; 720 } 721 ret = 1; 722 if (fprintf(fp, "group\t\t%s\n", up->u_primgrp) <= 0 || 723 fprintf(fp, "base_dir\t%s\n", up->u_basedir) <= 0 || 724 fprintf(fp, "skel_dir\t%s\n", up->u_skeldir) <= 0 || 725 fprintf(fp, "shell\t\t%s\n", up->u_shell) <= 0 || 726 #ifdef EXTENSIONS 727 fprintf(fp, "class\t\t%s\n", up->u_class) <= 0 || 728 #endif 729 fprintf(fp, "inactive\t%s\n", (up->u_inactive == NULL) ? UNSET_INACTIVE : up->u_inactive) <= 0 || 730 fprintf(fp, "expire\t\t%s\n", (up->u_expire == NULL) ? UNSET_EXPIRY : up->u_expire) <= 0 || 731 fprintf(fp, "preserve\t%s\n", (up->u_preserve == 0) ? "false" : "true") <= 0) { 732 warn("can't write to `%s'", CONFFILE); 733 ret = 0; 734 } 735 #ifdef EXTENSIONS 736 for (i = (up->u_defrc != up->u_rc) ? up->u_defrc : 0 ; i < up->u_rc ; i++) { 737 if (fprintf(fp, "range\t\t%d..%d\n", up->u_rv[i].r_from, up->u_rv[i].r_to) <= 0) { 738 warn("can't write to `%s'", CONFFILE); 739 ret = 0; 740 } 741 } 742 #endif 743 (void) fclose(fp); 744 if (ret) { 745 ret = ((rename(template, CONFFILE) == 0) && (chmod(CONFFILE, 0644) == 0)); 746 } 747 return ret; 748 } 749 750 /* read the defaults file */ 751 static void 752 read_defaults(user_t *up) 753 { 754 struct stat st; 755 size_t lineno; 756 size_t len; 757 FILE *fp; 758 char *cp; 759 char *s; 760 761 memsave(&up->u_primgrp, DEF_GROUP, strlen(DEF_GROUP)); 762 memsave(&up->u_basedir, DEF_BASEDIR, strlen(DEF_BASEDIR)); 763 memsave(&up->u_skeldir, DEF_SKELDIR, strlen(DEF_SKELDIR)); 764 memsave(&up->u_shell, DEF_SHELL, strlen(DEF_SHELL)); 765 memsave(&up->u_comment, DEF_COMMENT, strlen(DEF_COMMENT)); 766 #ifdef EXTENSIONS 767 memsave(&up->u_class, DEF_CLASS, strlen(DEF_CLASS)); 768 #endif 769 up->u_rsize = 16; 770 up->u_defrc = 0; 771 NEWARRAY(range_t, up->u_rv, up->u_rsize, exit(1)); 772 up->u_inactive = DEF_INACTIVE; 773 up->u_expire = DEF_EXPIRE; 774 if ((fp = fopen(CONFFILE, "r")) == NULL) { 775 if (stat(CONFFILE, &st) < 0 && !setdefaults(up)) { 776 warn("can't create `%s' defaults file", CONFFILE); 777 } 778 fp = fopen(CONFFILE, "r"); 779 } 780 if (fp != NULL) { 781 while ((s = fparseln(fp, &len, &lineno, NULL, 0)) != NULL) { 782 if (strncmp(s, "group", 5) == 0) { 783 for (cp = s + 5 ; *cp && isspace(*cp) ; cp++) { 784 } 785 memsave(&up->u_primgrp, cp, strlen(cp)); 786 } else if (strncmp(s, "base_dir", 8) == 0) { 787 for (cp = s + 8 ; *cp && isspace(*cp) ; cp++) { 788 } 789 memsave(&up->u_basedir, cp, strlen(cp)); 790 } else if (strncmp(s, "skel_dir", 8) == 0) { 791 for (cp = s + 8 ; *cp && isspace(*cp) ; cp++) { 792 } 793 memsave(&up->u_skeldir, cp, strlen(cp)); 794 } else if (strncmp(s, "shell", 5) == 0) { 795 for (cp = s + 5 ; *cp && isspace(*cp) ; cp++) { 796 } 797 memsave(&up->u_shell, cp, strlen(cp)); 798 #ifdef EXTENSIONS 799 } else if (strncmp(s, "class", 5) == 0) { 800 for (cp = s + 5 ; *cp && isspace(*cp) ; cp++) { 801 } 802 memsave(&up->u_class, cp, strlen(cp)); 803 #endif 804 } else if (strncmp(s, "inactive", 8) == 0) { 805 for (cp = s + 8 ; *cp && isspace(*cp) ; cp++) { 806 } 807 if (strcmp(cp, UNSET_INACTIVE) == 0) { 808 if (up->u_inactive) { 809 FREE(up->u_inactive); 810 } 811 up->u_inactive = NULL; 812 } else { 813 memsave(&up->u_inactive, cp, strlen(cp)); 814 } 815 #ifdef EXTENSIONS 816 } else if (strncmp(s, "range", 5) == 0) { 817 for (cp = s + 5 ; *cp && isspace(*cp) ; cp++) { 818 } 819 (void) save_range(up, cp); 820 #endif 821 #ifdef EXTENSIONS 822 } else if (strncmp(s, "preserve", 8) == 0) { 823 for (cp = s + 8 ; *cp && isspace(*cp) ; cp++) { 824 } 825 up->u_preserve = (strncmp(cp, "true", 4) == 0) ? 1 : 826 (strncmp(cp, "yes", 3) == 0) ? 1 : 827 atoi(cp); 828 #endif 829 } else if (strncmp(s, "expire", 6) == 0) { 830 for (cp = s + 6 ; *cp && isspace(*cp) ; cp++) { 831 } 832 if (strcmp(cp, UNSET_EXPIRY) == 0) { 833 if (up->u_expire) { 834 FREE(up->u_expire); 835 } 836 up->u_expire = NULL; 837 } else { 838 memsave(&up->u_expire, cp, strlen(cp)); 839 } 840 } 841 (void) free(s); 842 } 843 (void) fclose(fp); 844 } 845 if (up->u_rc == 0) { 846 up->u_rv[up->u_rc].r_from = DEF_LOWUID; 847 up->u_rv[up->u_rc].r_to = DEF_HIGHUID; 848 up->u_rc += 1; 849 } 850 up->u_defrc = up->u_rc; 851 } 852 853 /* return the next valid unused uid */ 854 static int 855 getnextuid(int sync_uid_gid, int *uid, int low_uid, int high_uid) 856 { 857 for (*uid = low_uid ; *uid <= high_uid ; (*uid)++) { 858 if (getpwuid((uid_t)(*uid)) == NULL && *uid != NOBODY_UID) { 859 if (sync_uid_gid) { 860 if (getgrgid((gid_t)(*uid)) == NULL) { 861 return 1; 862 } 863 } else { 864 return 1; 865 } 866 } 867 } 868 return 0; 869 } 870 871 /* add a user */ 872 static int 873 adduser(char *login, user_t *up) 874 { 875 struct group *grp; 876 struct stat st; 877 struct tm tm; 878 time_t expire; 879 time_t inactive; 880 char password[PasswordLength + 1]; 881 char home[MaxFileNameLen]; 882 char buf[MaxFileNameLen]; 883 int sync_uid_gid; 884 int masterfd; 885 int ptmpfd; 886 int gid; 887 int cc; 888 int i; 889 890 if (!valid_login(login)) { 891 errx(EXIT_FAILURE, "`%s' is not a valid login name", login); 892 } 893 if ((masterfd = open(_PATH_MASTERPASSWD, O_RDONLY)) < 0) { 894 err(EXIT_FAILURE, "can't open `%s'", _PATH_MASTERPASSWD); 895 } 896 if (flock(masterfd, LOCK_EX | LOCK_NB) < 0) { 897 err(EXIT_FAILURE, "can't lock `%s'", _PATH_MASTERPASSWD); 898 } 899 pw_init(); 900 if ((ptmpfd = pw_lock(WAITSECS)) < 0) { 901 (void) close(masterfd); 902 err(EXIT_FAILURE, "can't obtain pw_lock"); 903 } 904 while ((cc = read(masterfd, buf, sizeof(buf))) > 0) { 905 if (write(ptmpfd, buf, (size_t)(cc)) != cc) { 906 (void) close(masterfd); 907 (void) close(ptmpfd); 908 (void) pw_abort(); 909 err(EXIT_FAILURE, "short write to /etc/ptmp (not %d chars)", cc); 910 } 911 } 912 /* if no uid was specified, get next one in [low_uid..high_uid] range */ 913 sync_uid_gid = (strcmp(up->u_primgrp, "=uid") == 0); 914 if (up->u_uid == -1) { 915 int got_id = 0; 916 917 /* 918 * Look for a free UID in the command line ranges (if any). 919 * These start after the ranges specified in the config file. 920 */ 921 for (i = up->u_defrc; !got_id && i < up->u_rc ; i++) { 922 got_id = getnextuid(sync_uid_gid, &up->u_uid, 923 up->u_rv[i].r_from, up->u_rv[i].r_to); 924 } 925 /* 926 * If there were no free UIDs in the command line ranges, 927 * try the ranges from the config file (there will always 928 * be at least one default). 929 */ 930 for (i = 0; !got_id && i < up->u_defrc; i++) { 931 got_id = getnextuid(sync_uid_gid, &up->u_uid, 932 up->u_rv[i].r_from, up->u_rv[i].r_to); 933 } 934 if (!got_id) { 935 (void) close(ptmpfd); 936 (void) pw_abort(); 937 errx(EXIT_FAILURE, "can't get next uid for %d", up->u_uid); 938 } 939 } 940 /* check uid isn't already allocated */ 941 if (!(up->u_flags & F_DUPUID) && getpwuid((uid_t)(up->u_uid)) != NULL) { 942 (void) close(ptmpfd); 943 (void) pw_abort(); 944 errx(EXIT_FAILURE, "uid %d is already in use", up->u_uid); 945 } 946 /* if -g=uid was specified, check gid is unused */ 947 if (sync_uid_gid) { 948 if (getgrgid((gid_t)(up->u_uid)) != NULL) { 949 (void) close(ptmpfd); 950 (void) pw_abort(); 951 errx(EXIT_FAILURE, "gid %d is already in use", up->u_uid); 952 } 953 gid = up->u_uid; 954 } else if ((grp = getgrnam(up->u_primgrp)) != NULL) { 955 gid = grp->gr_gid; 956 } else if (is_number(up->u_primgrp) && 957 (grp = getgrgid((gid_t)atoi(up->u_primgrp))) != NULL) { 958 gid = grp->gr_gid; 959 } else { 960 (void) close(ptmpfd); 961 (void) pw_abort(); 962 errx(EXIT_FAILURE, "group %s not found", up->u_primgrp); 963 } 964 /* check name isn't already in use */ 965 if (!(up->u_flags & F_DUPUID) && getpwnam(login) != NULL) { 966 (void) close(ptmpfd); 967 (void) pw_abort(); 968 errx(EXIT_FAILURE, "already a `%s' user", login); 969 } 970 if (up->u_flags & F_HOMEDIR) { 971 (void) strlcpy(home, up->u_home, sizeof(home)); 972 } else { 973 /* if home directory hasn't been given, make it up */ 974 (void) snprintf(home, sizeof(home), "%s/%s", up->u_basedir, login); 975 } 976 inactive = 0; 977 if (up->u_inactive != NULL) { 978 (void) memset(&tm, 0, sizeof(tm)); 979 if (strptime(up->u_inactive, "%c", &tm) != NULL) { 980 inactive = mktime(&tm); 981 } else if (strptime(up->u_inactive, "%B %d %Y", &tm) != NULL) { 982 inactive = mktime(&tm); 983 } else if (isdigit(up->u_inactive[0]) != NULL) { 984 inactive = atoi(up->u_inactive); 985 } else { 986 warnx("Warning: inactive time `%s' invalid, account expiry off", 987 up->u_inactive); 988 } 989 } 990 expire = 0; 991 if (up->u_expire != NULL) { 992 (void) memset(&tm, 0, sizeof(tm)); 993 if (strptime(up->u_expire, "%c", &tm) != NULL) { 994 expire = mktime(&tm); 995 } else if (strptime(up->u_expire, "%B %d %Y", &tm) != NULL) { 996 expire = mktime(&tm); 997 } else if (isdigit(up->u_expire[0]) != NULL) { 998 expire = atoi(up->u_expire); 999 } else { 1000 warnx("Warning: expire time `%s' invalid, password expiry off", 1001 up->u_expire); 1002 } 1003 } 1004 if (lstat(home, &st) < 0 && !(up->u_flags & F_MKDIR)) { 1005 warnx("Warning: home directory `%s' doesn't exist, and -m was not specified", 1006 home); 1007 } 1008 password[PasswordLength] = '\0'; 1009 if (up->u_password != NULL && 1010 strlen(up->u_password) == PasswordLength) { 1011 (void) memcpy(password, up->u_password, PasswordLength); 1012 } else { 1013 (void) memset(password, '*', PasswordLength); 1014 if (up->u_password != NULL) { 1015 warnx("Password `%s' is invalid: setting it to `%s'", 1016 up->u_password, password); 1017 } 1018 } 1019 cc = snprintf(buf, sizeof(buf), "%s:%s:%d:%d:%s:%ld:%ld:%s:%s:%s\n", 1020 login, 1021 password, 1022 up->u_uid, 1023 gid, 1024 #ifdef EXTENSIONS 1025 up->u_class, 1026 #else 1027 "", 1028 #endif 1029 (long) inactive, 1030 (long) expire, 1031 up->u_comment, 1032 home, 1033 up->u_shell); 1034 if (write(ptmpfd, buf, (size_t) cc) != cc) { 1035 (void) close(ptmpfd); 1036 (void) pw_abort(); 1037 err(EXIT_FAILURE, "can't add `%s'", buf); 1038 } 1039 if (up->u_flags & F_MKDIR) { 1040 if (lstat(home, &st) == 0) { 1041 (void) close(ptmpfd); 1042 (void) pw_abort(); 1043 errx(EXIT_FAILURE, "home directory `%s' already exists", home); 1044 } else { 1045 if (asystem("%s -p %s", MKDIR, home) != 0) { 1046 (void) close(ptmpfd); 1047 (void) pw_abort(); 1048 err(EXIT_FAILURE, "can't mkdir `%s'", home); 1049 } 1050 (void) copydotfiles(up->u_skeldir, up->u_uid, gid, home); 1051 } 1052 } 1053 if (strcmp(up->u_primgrp, "=uid") == 0 && 1054 getgrnam(login) == NULL && 1055 !creategid(login, gid, login)) { 1056 (void) close(ptmpfd); 1057 (void) pw_abort(); 1058 errx(EXIT_FAILURE, "can't create gid %d for login name %s", gid, login); 1059 } 1060 if (up->u_groupc > 0 && !append_group(login, up->u_groupc, up->u_groupv)) { 1061 (void) close(ptmpfd); 1062 (void) pw_abort(); 1063 errx(EXIT_FAILURE, "can't append `%s' to new groups", login); 1064 } 1065 (void) close(ptmpfd); 1066 #if PW_MKDB_ARGC == 2 1067 if (pw_mkdb(login, 0) < 0) { 1068 err(EXIT_FAILURE, "pw_mkdb failed"); 1069 } 1070 #else 1071 if (pw_mkdb() < 0) { 1072 err(EXIT_FAILURE, "pw_mkdb failed"); 1073 } 1074 #endif 1075 return 1; 1076 } 1077 1078 /* modify a user */ 1079 static int 1080 moduser(char *login, char *newlogin, user_t *up) 1081 { 1082 struct passwd *pwp; 1083 struct group *grp; 1084 struct tm tm; 1085 const char *homedir; 1086 size_t colonc, len, loginc; 1087 size_t cc; 1088 FILE *master; 1089 char newdir[MaxFileNameLen]; 1090 char *buf, *colon, *line; 1091 int masterfd; 1092 int ptmpfd; 1093 int error; 1094 1095 if (!valid_login(newlogin)) { 1096 errx(EXIT_FAILURE, "`%s' is not a valid login name", login); 1097 } 1098 if ((pwp = getpwnam(login)) == NULL) { 1099 errx(EXIT_FAILURE, "No such user `%s'", login); 1100 } 1101 /* keep dir name in case we need it for '-m' */ 1102 homedir = pwp->pw_dir; 1103 1104 if ((masterfd = open(_PATH_MASTERPASSWD, O_RDONLY)) < 0) { 1105 err(EXIT_FAILURE, "can't open `%s'", _PATH_MASTERPASSWD); 1106 } 1107 if (flock(masterfd, LOCK_EX | LOCK_NB) < 0) { 1108 err(EXIT_FAILURE, "can't lock `%s'", _PATH_MASTERPASSWD); 1109 } 1110 pw_init(); 1111 if ((ptmpfd = pw_lock(WAITSECS)) < 0) { 1112 (void) close(masterfd); 1113 err(EXIT_FAILURE, "can't obtain pw_lock"); 1114 } 1115 if ((master = fdopen(masterfd, "r")) == NULL) { 1116 (void) close(masterfd); 1117 (void) close(ptmpfd); 1118 (void) pw_abort(); 1119 err(EXIT_FAILURE, "can't fdopen fd for %s", _PATH_MASTERPASSWD); 1120 } 1121 if (up != NULL) { 1122 if (up->u_flags & F_USERNAME) { 1123 /* if changing name, check new name isn't already in use */ 1124 if (strcmp(login, newlogin) != 0 && getpwnam(newlogin) != NULL) { 1125 (void) close(ptmpfd); 1126 (void) pw_abort(); 1127 errx(EXIT_FAILURE, "already a `%s' user", newlogin); 1128 } 1129 pwp->pw_name = newlogin; 1130 1131 /* 1132 * Provide a new directory name in case the 1133 * home directory is to be moved. 1134 */ 1135 if (up->u_flags & F_MKDIR) { 1136 snprintf(newdir, sizeof(newdir), "%s/%s", up->u_basedir, newlogin); 1137 pwp->pw_dir = newdir; 1138 } 1139 } 1140 if (up->u_flags & F_PASSWORD) { 1141 if (up->u_password != NULL && strlen(up->u_password) == PasswordLength) 1142 pwp->pw_passwd = up->u_password; 1143 } 1144 if (up->u_flags & F_UID) { 1145 /* check uid isn't already allocated */ 1146 if (!(up->u_flags & F_DUPUID) && getpwuid((uid_t)(up->u_uid)) != NULL) { 1147 (void) close(ptmpfd); 1148 (void) pw_abort(); 1149 errx(EXIT_FAILURE, "uid %d is already in use", up->u_uid); 1150 } 1151 pwp->pw_uid = up->u_uid; 1152 } 1153 if (up->u_flags & F_GROUP) { 1154 /* if -g=uid was specified, check gid is unused */ 1155 if (strcmp(up->u_primgrp, "=uid") == 0) { 1156 if (getgrgid((gid_t)(up->u_uid)) != NULL) { 1157 (void) close(ptmpfd); 1158 (void) pw_abort(); 1159 errx(EXIT_FAILURE, "gid %d is already in use", up->u_uid); 1160 } 1161 pwp->pw_gid = up->u_uid; 1162 } else if ((grp = getgrnam(up->u_primgrp)) != NULL) { 1163 pwp->pw_gid = grp->gr_gid; 1164 } else if (is_number(up->u_primgrp) && 1165 (grp = getgrgid((gid_t)atoi(up->u_primgrp))) != NULL) { 1166 pwp->pw_gid = grp->gr_gid; 1167 } else { 1168 (void) close(ptmpfd); 1169 (void) pw_abort(); 1170 errx(EXIT_FAILURE, "group %s not found", up->u_primgrp); 1171 } 1172 } 1173 if (up->u_flags & F_INACTIVE) { 1174 (void) memset(&tm, 0, sizeof(tm)); 1175 if (strptime(up->u_inactive, "%c", &tm) != NULL) { 1176 pwp->pw_change = mktime(&tm); 1177 } else if (strptime(up->u_inactive, "%B %d %Y", &tm) != NULL) { 1178 pwp->pw_change = mktime(&tm); 1179 } else if (isdigit(up->u_inactive[0]) != NULL) { 1180 pwp->pw_change = atoi(up->u_inactive); 1181 } else { 1182 warnx("Warning: inactive time `%s' invalid, password expiry off", 1183 up->u_inactive); 1184 } 1185 } 1186 if (up->u_flags & F_EXPIRE) { 1187 (void) memset(&tm, 0, sizeof(tm)); 1188 if (strptime(up->u_expire, "%c", &tm) != NULL) { 1189 pwp->pw_expire = mktime(&tm); 1190 } else if (strptime(up->u_expire, "%B %d %Y", &tm) != NULL) { 1191 pwp->pw_expire = mktime(&tm); 1192 } else if (isdigit(up->u_expire[0]) != NULL) { 1193 pwp->pw_expire = atoi(up->u_expire); 1194 } else { 1195 warnx("Warning: expire time `%s' invalid, password expiry off", 1196 up->u_expire); 1197 } 1198 } 1199 if (up->u_flags & F_COMMENT) 1200 pwp->pw_gecos = up->u_comment; 1201 if (up->u_flags & F_HOMEDIR) 1202 pwp->pw_dir = up->u_home; 1203 if (up->u_flags & F_SHELL) 1204 pwp->pw_shell = up->u_shell; 1205 #ifdef EXTENSIONS 1206 if (up->u_flags & F_CLASS) 1207 pwp->pw_class = up->u_class; 1208 #endif 1209 } 1210 loginc = strlen(login); 1211 while ((line = fgetln(master, &len)) != NULL) { 1212 if ((colon = strchr(line, ':')) == NULL) { 1213 warnx("Malformed entry `%s'. Skipping", line); 1214 continue; 1215 } 1216 colonc = (size_t)(colon - line); 1217 if (strncmp(login, line, loginc) == 0 && loginc == colonc) { 1218 if (up != NULL) { 1219 len = (int)asprintf(&buf, "%s:%s:%d:%d:" 1220 #ifdef EXTENSIONS 1221 "%s" 1222 #endif 1223 ":%ld:%ld:%s:%s:%s\n", 1224 newlogin, 1225 pwp->pw_passwd, 1226 pwp->pw_uid, 1227 pwp->pw_gid, 1228 #ifdef EXTENSIONS 1229 pwp->pw_class, 1230 #endif 1231 (long)pwp->pw_change, 1232 (long)pwp->pw_expire, 1233 pwp->pw_gecos, 1234 pwp->pw_dir, 1235 pwp->pw_shell); 1236 if (write(ptmpfd, buf, len) != len) { 1237 (void) close(ptmpfd); 1238 (void) pw_abort(); 1239 err(EXIT_FAILURE, "can't add `%s'", buf); 1240 } 1241 (void) free(buf); 1242 } 1243 } else if ((cc = write(ptmpfd, line, len)) != len) { 1244 (void) close(masterfd); 1245 (void) close(ptmpfd); 1246 (void) pw_abort(); 1247 err(EXIT_FAILURE, "short write to /etc/ptmp (%lld not %lld chars)", 1248 (long long)cc, 1249 (long long)len); 1250 } 1251 } 1252 if (up != NULL) { 1253 if ((up->u_flags & F_MKDIR) && 1254 asystem("%s %s %s", MV, homedir, pwp->pw_dir) != 0) { 1255 (void) close(ptmpfd); 1256 (void) pw_abort(); 1257 err(EXIT_FAILURE, "can't move `%s' to `%s'", 1258 homedir, pwp->pw_dir); 1259 } 1260 if (up->u_groupc > 0 && 1261 !append_group(newlogin, up->u_groupc, up->u_groupv)) { 1262 (void) close(ptmpfd); 1263 (void) pw_abort(); 1264 errx(EXIT_FAILURE, "can't append `%s' to new groups", 1265 newlogin); 1266 } 1267 } 1268 (void) close(ptmpfd); 1269 #if PW_MKDB_ARGC == 2 1270 if (up != NULL && strcmp(login, newlogin) == 0) { 1271 error = pw_mkdb(login, 0); 1272 } else { 1273 error = pw_mkdb(NULL, 0); 1274 } 1275 #else 1276 error = pw_mkdb(); 1277 #endif 1278 if (error < 0) { 1279 err(EXIT_FAILURE, "pw_mkdb failed"); 1280 } 1281 1282 return 1; 1283 } 1284 1285 1286 #ifdef EXTENSIONS 1287 /* see if we can find out the user struct */ 1288 static struct passwd * 1289 find_user_info(char *name) 1290 { 1291 struct passwd *pwp; 1292 1293 if ((pwp = getpwnam(name)) != NULL) { 1294 return pwp; 1295 } 1296 if (is_number(name) && (pwp = getpwuid((uid_t)atoi(name))) != NULL) { 1297 return pwp; 1298 } 1299 return NULL; 1300 } 1301 #endif 1302 1303 #ifdef EXTENSIONS 1304 /* see if we can find out the group struct */ 1305 static struct group * 1306 find_group_info(char *name) 1307 { 1308 struct group *grp; 1309 1310 if ((grp = getgrnam(name)) != NULL) { 1311 return grp; 1312 } 1313 if (is_number(name) && (grp = getgrgid((gid_t)atoi(name))) != NULL) { 1314 return grp; 1315 } 1316 return NULL; 1317 } 1318 #endif 1319 1320 /* print out usage message, and then exit */ 1321 void 1322 usermgmt_usage(const char *prog) 1323 { 1324 if (strcmp(prog, "useradd") == 0) { 1325 (void) fprintf(stderr, "Usage: %s -D [-b basedir] [-e expiry] " 1326 "[-f inactive] [-g group]\n\t[-r lowuid..highuid] " 1327 "[-s shell] [-L class]\n", prog); 1328 (void) fprintf(stderr, "Usage: %s [-G group] [-b basedir] " 1329 "[-c comment] [-d homedir] [-e expiry]\n\t[-f inactive] " 1330 "[-g group] [-k skeletondir] [-m] [-o] [-p password]\n" 1331 "\t[-r lowuid..highuid] [-s shell]\n\t[-u uid] [-v] user\n", 1332 prog); 1333 } else if (strcmp(prog, "usermod") == 0) { 1334 (void) fprintf(stderr, "Usage: %s [-G group] [-c comment] " 1335 "[-d homedir] [-e expire] [-f inactive]\n\t[-g group] " 1336 "[-l newname] [-m] [-o] [-p password] [-s shell] [-u uid]\n" 1337 "\t[-L class] [-v] user\n", prog); 1338 } else if (strcmp(prog, "userdel") == 0) { 1339 (void) fprintf(stderr, "Usage: %s -D [-p preserve]\n", prog); 1340 (void) fprintf(stderr, 1341 "Usage: %s [-p preserve] [-r] [-v] user\n", prog); 1342 #ifdef EXTENSIONS 1343 } else if (strcmp(prog, "userinfo") == 0) { 1344 (void) fprintf(stderr, "Usage: %s [-e] [-v] user\n", prog); 1345 #endif 1346 } else if (strcmp(prog, "groupadd") == 0) { 1347 (void) fprintf(stderr, "Usage: %s [-g gid] [-o] [-v] group\n", 1348 prog); 1349 } else if (strcmp(prog, "groupdel") == 0) { 1350 (void) fprintf(stderr, "Usage: %s [-v] group\n", prog); 1351 } else if (strcmp(prog, "groupmod") == 0) { 1352 (void) fprintf(stderr, 1353 "Usage: %s [-g gid] [-o] [-n newname] [-v] group\n", prog); 1354 } else if (strcmp(prog, "user") == 0 || strcmp(prog, "group") == 0) { 1355 (void) fprintf(stderr, 1356 "Usage: %s ( add | del | mod | info ) ...\n", prog); 1357 #ifdef EXTENSIONS 1358 } else if (strcmp(prog, "groupinfo") == 0) { 1359 (void) fprintf(stderr, "Usage: %s [-e] [-v] group\n", prog); 1360 #endif 1361 } 1362 exit(EXIT_FAILURE); 1363 /* NOTREACHED */ 1364 } 1365 1366 #ifdef EXTENSIONS 1367 #define ADD_OPT_EXTENSIONS "p:r:vL:" 1368 #else 1369 #define ADD_OPT_EXTENSIONS 1370 #endif 1371 1372 int 1373 useradd(int argc, char **argv) 1374 { 1375 user_t u; 1376 int defaultfield; 1377 int bigD; 1378 int c; 1379 #ifdef EXTENSIONS 1380 int i; 1381 #endif 1382 1383 (void) memset(&u, 0, sizeof(u)); 1384 read_defaults(&u); 1385 u.u_uid = -1; 1386 defaultfield = bigD = 0; 1387 while ((c = getopt(argc, argv, "DG:b:c:d:e:f:g:k:mou:s:" ADD_OPT_EXTENSIONS)) != -1) { 1388 switch(c) { 1389 case 'D': 1390 bigD = 1; 1391 break; 1392 case 'G': 1393 while ((u.u_groupv[u.u_groupc] = strsep(&optarg, ",")) != NULL && 1394 u.u_groupc < NGROUPS_MAX) { 1395 if (u.u_groupv[u.u_groupc][0] != 0) { 1396 u.u_groupc++; 1397 } 1398 } 1399 if (optarg != NULL) { 1400 warnx("Truncated list of secondary groups to %d entries", NGROUPS_MAX); 1401 } 1402 break; 1403 case 'b': 1404 defaultfield = 1; 1405 memsave(&u.u_basedir, optarg, strlen(optarg)); 1406 break; 1407 case 'c': 1408 memsave(&u.u_comment, optarg, strlen(optarg)); 1409 break; 1410 case 'd': 1411 memsave(&u.u_home, optarg, strlen(optarg)); 1412 u.u_flags |= F_HOMEDIR; 1413 break; 1414 case 'e': 1415 defaultfield = 1; 1416 memsave(&u.u_expire, optarg, strlen(optarg)); 1417 break; 1418 case 'f': 1419 defaultfield = 1; 1420 memsave(&u.u_inactive, optarg, strlen(optarg)); 1421 break; 1422 case 'g': 1423 defaultfield = 1; 1424 memsave(&u.u_primgrp, optarg, strlen(optarg)); 1425 break; 1426 case 'k': 1427 defaultfield = 1; 1428 memsave(&u.u_skeldir, optarg, strlen(optarg)); 1429 break; 1430 #ifdef EXTENSIONS 1431 case 'L': 1432 defaultfield = 1; 1433 memsave(&u.u_class, optarg, strlen(optarg)); 1434 break; 1435 #endif 1436 case 'm': 1437 u.u_flags |= F_MKDIR; 1438 break; 1439 case 'o': 1440 u.u_flags |= F_DUPUID; 1441 break; 1442 #ifdef EXTENSIONS 1443 case 'p': 1444 memsave(&u.u_password, optarg, strlen(optarg)); 1445 break; 1446 #endif 1447 #ifdef EXTENSIONS 1448 case 'r': 1449 defaultfield = 1; 1450 (void) save_range(&u, optarg); 1451 break; 1452 #endif 1453 case 's': 1454 defaultfield = 1; 1455 memsave(&u.u_shell, optarg, strlen(optarg)); 1456 break; 1457 case 'u': 1458 if (!is_number(optarg)) { 1459 errx(EXIT_FAILURE, "When using [-u uid], the uid must be numeric"); 1460 } 1461 u.u_uid = atoi(optarg); 1462 break; 1463 #ifdef EXTENSIONS 1464 case 'v': 1465 verbose = 1; 1466 break; 1467 #endif 1468 } 1469 } 1470 if (bigD) { 1471 if (defaultfield) { 1472 checkeuid(); 1473 return setdefaults(&u) ? EXIT_SUCCESS : EXIT_FAILURE; 1474 } 1475 (void) printf("group\t\t%s\n", u.u_primgrp); 1476 (void) printf("base_dir\t%s\n", u.u_basedir); 1477 (void) printf("skel_dir\t%s\n", u.u_skeldir); 1478 (void) printf("shell\t\t%s\n", u.u_shell); 1479 #ifdef EXTENSIONS 1480 (void) printf("class\t\t%s\n", u.u_class); 1481 #endif 1482 (void) printf("inactive\t%s\n", (u.u_inactive == NULL) ? UNSET_INACTIVE : u.u_inactive); 1483 (void) printf("expire\t\t%s\n", (u.u_expire == NULL) ? UNSET_EXPIRY : u.u_expire); 1484 #ifdef EXTENSIONS 1485 for (i = 0 ; i < u.u_rc ; i++) { 1486 (void) printf("range\t\t%d..%d\n", u.u_rv[i].r_from, u.u_rv[i].r_to); 1487 } 1488 #endif 1489 return EXIT_SUCCESS; 1490 } 1491 argc -= optind; 1492 argv += optind; 1493 if (argc != 1) { 1494 usermgmt_usage("useradd"); 1495 } 1496 checkeuid(); 1497 return adduser(*argv, &u) ? EXIT_SUCCESS : EXIT_FAILURE; 1498 } 1499 1500 #ifdef EXTENSIONS 1501 #define MOD_OPT_EXTENSIONS "p:vL:" 1502 #else 1503 #define MOD_OPT_EXTENSIONS 1504 #endif 1505 1506 int 1507 usermod(int argc, char **argv) 1508 { 1509 user_t u; 1510 char newuser[MaxUserNameLen + 1]; 1511 int c, have_new_user; 1512 1513 (void) memset(&u, 0, sizeof(u)); 1514 (void) memset(newuser, 0, sizeof(newuser)); 1515 read_defaults(&u); 1516 have_new_user = 0; 1517 while ((c = getopt(argc, argv, "G:c:d:e:f:g:l:mos:u:" MOD_OPT_EXTENSIONS)) != -1) { 1518 switch(c) { 1519 case 'G': 1520 while ((u.u_groupv[u.u_groupc] = strsep(&optarg, ",")) != NULL && 1521 u.u_groupc < NGROUPS_MAX) { 1522 if (u.u_groupv[u.u_groupc][0] != 0) { 1523 u.u_groupc++; 1524 } 1525 } 1526 if (optarg != NULL) { 1527 warnx("Truncated list of secondary groups to %d entries", NGROUPS_MAX); 1528 } 1529 u.u_flags |= F_SECGROUP; 1530 break; 1531 case 'c': 1532 memsave(&u.u_comment, optarg, strlen(optarg)); 1533 u.u_flags |= F_COMMENT; 1534 break; 1535 case 'd': 1536 memsave(&u.u_home, optarg, strlen(optarg)); 1537 u.u_flags |= F_HOMEDIR; 1538 break; 1539 case 'e': 1540 memsave(&u.u_expire, optarg, strlen(optarg)); 1541 u.u_flags |= F_EXPIRE; 1542 break; 1543 case 'f': 1544 memsave(&u.u_inactive, optarg, strlen(optarg)); 1545 u.u_flags |= F_INACTIVE; 1546 break; 1547 case 'g': 1548 memsave(&u.u_primgrp, optarg, strlen(optarg)); 1549 u.u_flags |= F_GROUP; 1550 break; 1551 case 'l': 1552 (void) strlcpy(newuser, optarg, sizeof(newuser)); 1553 have_new_user = 1; 1554 u.u_flags |= F_USERNAME; 1555 break; 1556 #ifdef EXTENSIONS 1557 case 'L': 1558 memsave(&u.u_class, optarg, strlen(optarg)); 1559 u.u_flags |= F_CLASS; 1560 break; 1561 #endif 1562 case 'm': 1563 u.u_flags |= F_MKDIR; 1564 break; 1565 case 'o': 1566 u.u_flags |= F_DUPUID; 1567 break; 1568 #ifdef EXTENSIONS 1569 case 'p': 1570 memsave(&u.u_password, optarg, strlen(optarg)); 1571 u.u_flags |= F_PASSWORD; 1572 break; 1573 #endif 1574 case 's': 1575 memsave(&u.u_shell, optarg, strlen(optarg)); 1576 u.u_flags |= F_SHELL; 1577 break; 1578 case 'u': 1579 if (!is_number(optarg)) { 1580 errx(EXIT_FAILURE, "When using [-u uid], the uid must be numeric"); 1581 } 1582 u.u_uid = atoi(optarg); 1583 u.u_flags |= F_UID; 1584 break; 1585 #ifdef EXTENSIONS 1586 case 'v': 1587 verbose = 1; 1588 break; 1589 #endif 1590 } 1591 } 1592 if ((u.u_flags & F_MKDIR) && !(u.u_flags & F_HOMEDIR) && 1593 !(u.u_flags & F_USERNAME)) { 1594 warnx("option 'm' useless without 'd' or 'l' -- ignored"); 1595 u.u_flags &= ~F_MKDIR; 1596 } 1597 argc -= optind; 1598 argv += optind; 1599 if (argc != 1) { 1600 usermgmt_usage("usermod"); 1601 } 1602 checkeuid(); 1603 return moduser(*argv, (have_new_user) ? newuser : *argv, &u) ? EXIT_SUCCESS : EXIT_FAILURE; 1604 } 1605 1606 #ifdef EXTENSIONS 1607 #define DEL_OPT_EXTENSIONS "Dp:v" 1608 #else 1609 #define DEL_OPT_EXTENSIONS 1610 #endif 1611 1612 int 1613 userdel(int argc, char **argv) 1614 { 1615 struct passwd *pwp; 1616 user_t u; 1617 char password[PasswordLength + 1]; 1618 int defaultfield; 1619 int rmhome; 1620 int bigD; 1621 int c; 1622 1623 (void) memset(&u, 0, sizeof(u)); 1624 read_defaults(&u); 1625 defaultfield = bigD = rmhome = 0; 1626 while ((c = getopt(argc, argv, "r" DEL_OPT_EXTENSIONS)) != -1) { 1627 switch(c) { 1628 #ifdef EXTENSIONS 1629 case 'D': 1630 bigD = 1; 1631 break; 1632 #endif 1633 #ifdef EXTENSIONS 1634 case 'p': 1635 defaultfield = 1; 1636 u.u_preserve = (strcmp(optarg, "true") == 0) ? 1 : 1637 (strcmp(optarg, "yes") == 0) ? 1 : 1638 atoi(optarg); 1639 break; 1640 #endif 1641 case 'r': 1642 rmhome = 1; 1643 break; 1644 #ifdef EXTENSIONS 1645 case 'v': 1646 verbose = 1; 1647 break; 1648 #endif 1649 } 1650 } 1651 #ifdef EXTENSIONS 1652 if (bigD) { 1653 if (defaultfield) { 1654 checkeuid(); 1655 return setdefaults(&u) ? EXIT_SUCCESS : EXIT_FAILURE; 1656 } 1657 (void) printf("preserve\t%s\n", (u.u_preserve) ? "true" : "false"); 1658 return EXIT_SUCCESS; 1659 } 1660 #endif 1661 argc -= optind; 1662 argv += optind; 1663 if (argc != 1) { 1664 usermgmt_usage("userdel"); 1665 } 1666 checkeuid(); 1667 if ((pwp = getpwnam(*argv)) == NULL) { 1668 warnx("No such user `%s'", *argv); 1669 return EXIT_FAILURE; 1670 } 1671 if (rmhome) 1672 (void)removehomedir(pwp->pw_name, pwp->pw_uid, pwp->pw_dir); 1673 if (u.u_preserve) { 1674 u.u_flags |= F_SHELL; 1675 memsave(&u.u_shell, NOLOGIN, strlen(NOLOGIN)); 1676 (void) memset(password, '*', PasswordLength); 1677 password[PasswordLength] = '\0'; 1678 memsave(&u.u_password, password, PasswordLength); 1679 u.u_flags |= F_PASSWORD; 1680 return moduser(*argv, *argv, &u) ? EXIT_SUCCESS : EXIT_FAILURE; 1681 } 1682 return moduser(*argv, *argv, NULL) ? EXIT_SUCCESS : EXIT_FAILURE; 1683 } 1684 1685 #ifdef EXTENSIONS 1686 #define GROUP_ADD_OPT_EXTENSIONS "v" 1687 #else 1688 #define GROUP_ADD_OPT_EXTENSIONS 1689 #endif 1690 1691 /* add a group */ 1692 int 1693 groupadd(int argc, char **argv) 1694 { 1695 int dupgid; 1696 int gid; 1697 int c; 1698 1699 gid = -1; 1700 dupgid = 0; 1701 while ((c = getopt(argc, argv, "g:o" GROUP_ADD_OPT_EXTENSIONS)) != -1) { 1702 switch(c) { 1703 case 'g': 1704 if (!is_number(optarg)) { 1705 errx(EXIT_FAILURE, "When using [-g gid], the gid must be numeric"); 1706 } 1707 gid = atoi(optarg); 1708 break; 1709 case 'o': 1710 dupgid = 1; 1711 break; 1712 #ifdef EXTENSIONS 1713 case 'v': 1714 verbose = 1; 1715 break; 1716 #endif 1717 } 1718 } 1719 argc -= optind; 1720 argv += optind; 1721 if (argc != 1) { 1722 usermgmt_usage("groupadd"); 1723 } 1724 checkeuid(); 1725 if (gid < 0 && !getnextgid(&gid, LowGid, HighGid)) { 1726 err(EXIT_FAILURE, "can't add group: can't get next gid"); 1727 } 1728 if (!dupgid && getgrgid((gid_t) gid) != NULL) { 1729 errx(EXIT_FAILURE, "can't add group: gid %d is a duplicate", gid); 1730 } 1731 if (!valid_group(*argv)) { 1732 warnx("warning - invalid group name `%s'", *argv); 1733 } 1734 if (!creategid(*argv, gid, "")) { 1735 errx(EXIT_FAILURE, "can't add group: problems with %s file", _PATH_GROUP); 1736 } 1737 return EXIT_SUCCESS; 1738 } 1739 1740 #ifdef EXTENSIONS 1741 #define GROUP_DEL_OPT_EXTENSIONS "v" 1742 #else 1743 #define GROUP_DEL_OPT_EXTENSIONS 1744 #endif 1745 1746 /* remove a group */ 1747 int 1748 groupdel(int argc, char **argv) 1749 { 1750 int c; 1751 1752 while ((c = getopt(argc, argv, "" GROUP_DEL_OPT_EXTENSIONS)) != -1) { 1753 switch(c) { 1754 #ifdef EXTENSIONS 1755 case 'v': 1756 verbose = 1; 1757 break; 1758 #endif 1759 } 1760 } 1761 argc -= optind; 1762 argv += optind; 1763 if (argc != 1) { 1764 usermgmt_usage("groupdel"); 1765 } 1766 checkeuid(); 1767 if (!modify_gid(*argv, NULL)) { 1768 err(EXIT_FAILURE, "can't change %s file", _PATH_GROUP); 1769 } 1770 return EXIT_SUCCESS; 1771 } 1772 1773 #ifdef EXTENSIONS 1774 #define GROUP_MOD_OPT_EXTENSIONS "v" 1775 #else 1776 #define GROUP_MOD_OPT_EXTENSIONS 1777 #endif 1778 1779 /* modify a group */ 1780 int 1781 groupmod(int argc, char **argv) 1782 { 1783 struct group *grp; 1784 char buf[MaxEntryLen]; 1785 char *newname; 1786 char **cpp; 1787 int dupgid; 1788 int gid; 1789 int cc; 1790 int c; 1791 1792 gid = -1; 1793 dupgid = 0; 1794 newname = NULL; 1795 while ((c = getopt(argc, argv, "g:on:" GROUP_MOD_OPT_EXTENSIONS)) != -1) { 1796 switch(c) { 1797 case 'g': 1798 if (!is_number(optarg)) { 1799 errx(EXIT_FAILURE, "When using [-g gid], the gid must be numeric"); 1800 } 1801 gid = atoi(optarg); 1802 break; 1803 case 'o': 1804 dupgid = 1; 1805 break; 1806 case 'n': 1807 memsave(&newname, optarg, strlen(optarg)); 1808 break; 1809 #ifdef EXTENSIONS 1810 case 'v': 1811 verbose = 1; 1812 break; 1813 #endif 1814 } 1815 } 1816 argc -= optind; 1817 argv += optind; 1818 if (argc != 1) { 1819 usermgmt_usage("groupmod"); 1820 } 1821 checkeuid(); 1822 if (gid < 0 && newname == NULL) { 1823 err(EXIT_FAILURE, "Nothing to change"); 1824 } 1825 if (dupgid && gid < 0) { 1826 err(EXIT_FAILURE, "Duplicate which gid?"); 1827 } 1828 if ((grp = getgrnam(*argv)) == NULL) { 1829 err(EXIT_FAILURE, "can't find group `%s' to modify", *argv); 1830 } 1831 if (newname != NULL && !valid_group(newname)) { 1832 warn("warning - invalid group name `%s'", newname); 1833 } 1834 cc = snprintf(buf, sizeof(buf), "%s:%s:%d:", 1835 (newname) ? newname : grp->gr_name, 1836 grp->gr_passwd, 1837 (gid < 0) ? grp->gr_gid : gid); 1838 for (cpp = grp->gr_mem ; *cpp && cc < sizeof(buf) ; cpp++) { 1839 cc += snprintf(&buf[cc], sizeof(buf) - cc, "%s%s", *cpp, 1840 (cpp[1] == NULL) ? "" : ","); 1841 } 1842 cc += snprintf(&buf[cc], sizeof(buf) - cc, "\n"); 1843 if (!modify_gid(*argv, buf)) { 1844 err(EXIT_FAILURE, "can't change %s file", _PATH_GROUP); 1845 } 1846 return EXIT_SUCCESS; 1847 } 1848 1849 #ifdef EXTENSIONS 1850 /* display user information */ 1851 int 1852 userinfo(int argc, char **argv) 1853 { 1854 struct passwd *pwp; 1855 struct group *grp; 1856 char buf[MaxEntryLen]; 1857 char **cpp; 1858 int exists; 1859 int cc; 1860 int i; 1861 1862 exists = 0; 1863 while ((i = getopt(argc, argv, "ev")) != -1) { 1864 switch(i) { 1865 case 'e': 1866 exists = 1; 1867 break; 1868 case 'v': 1869 verbose = 1; 1870 break; 1871 } 1872 } 1873 argc -= optind; 1874 argv += optind; 1875 if (argc != 1) { 1876 usermgmt_usage("userinfo"); 1877 } 1878 pwp = find_user_info(*argv); 1879 if (exists) { 1880 exit((pwp) ? EXIT_SUCCESS : EXIT_FAILURE); 1881 } 1882 if (pwp == NULL) { 1883 errx(EXIT_FAILURE, "can't find user `%s'", *argv); 1884 } 1885 (void) printf("login\t%s\n", pwp->pw_name); 1886 (void) printf("passwd\t%s\n", pwp->pw_passwd); 1887 (void) printf("uid\t%d\n", pwp->pw_uid); 1888 for (cc = 0 ; (grp = getgrent()) != NULL ; ) { 1889 for (cpp = grp->gr_mem ; *cpp ; cpp++) { 1890 if (strcmp(*cpp, *argv) == 0 && grp->gr_gid != pwp->pw_gid) { 1891 cc += snprintf(&buf[cc], sizeof(buf) - cc, "%s ", grp->gr_name); 1892 } 1893 } 1894 } 1895 if ((grp = getgrgid(pwp->pw_gid)) == NULL) { 1896 (void) printf("groups\t%d %s\n", pwp->pw_gid, buf); 1897 } else { 1898 (void) printf("groups\t%s %s\n", grp->gr_name, buf); 1899 } 1900 (void) printf("change\t%s", pwp->pw_change ? ctime(&pwp->pw_change) : "NEVER\n"); 1901 #ifdef EXTENSIONS 1902 (void) printf("class\t%s\n", pwp->pw_class); 1903 #endif 1904 (void) printf("gecos\t%s\n", pwp->pw_gecos); 1905 (void) printf("dir\t%s\n", pwp->pw_dir); 1906 (void) printf("shell\t%s\n", pwp->pw_shell); 1907 (void) printf("expire\t%s", pwp->pw_expire ? ctime(&pwp->pw_expire) : "NEVER\n"); 1908 return EXIT_SUCCESS; 1909 } 1910 #endif 1911 1912 #ifdef EXTENSIONS 1913 /* display user information */ 1914 int 1915 groupinfo(int argc, char **argv) 1916 { 1917 struct group *grp; 1918 char **cpp; 1919 int exists; 1920 int i; 1921 1922 exists = 0; 1923 while ((i = getopt(argc, argv, "ev")) != -1) { 1924 switch(i) { 1925 case 'e': 1926 exists = 1; 1927 break; 1928 case 'v': 1929 verbose = 1; 1930 break; 1931 } 1932 } 1933 argc -= optind; 1934 argv += optind; 1935 if (argc != 1) { 1936 usermgmt_usage("groupinfo"); 1937 } 1938 grp = find_group_info(*argv); 1939 if (exists) { 1940 exit((grp) ? EXIT_SUCCESS : EXIT_FAILURE); 1941 } 1942 if (grp == NULL) { 1943 errx(EXIT_FAILURE, "can't find group `%s'", *argv); 1944 } 1945 (void) printf("name\t%s\n", grp->gr_name); 1946 (void) printf("passwd\t%s\n", grp->gr_passwd); 1947 (void) printf("gid\t%d\n", grp->gr_gid); 1948 (void) printf("members\t"); 1949 for (cpp = grp->gr_mem ; *cpp ; cpp++) { 1950 (void) printf("%s ", *cpp); 1951 } 1952 (void) fputc('\n', stdout); 1953 return EXIT_SUCCESS; 1954 } 1955 #endif 1956