user.c revision 1.76
1 /* $NetBSD: user.c,v 1.76 2004/07/02 12:01:00 agc 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 1.76 2004/07/02 12:01:00 agc Exp $"); 39 #endif 40 41 #include <sys/types.h> 42 #include <sys/param.h> 43 #include <sys/stat.h> 44 45 #include <ctype.h> 46 #include <dirent.h> 47 #include <err.h> 48 #include <fcntl.h> 49 #include <grp.h> 50 #include <paths.h> 51 #include <pwd.h> 52 #include <regex.h> 53 #include <stdarg.h> 54 #include <stdio.h> 55 #include <stdlib.h> 56 #include <string.h> 57 #include <syslog.h> 58 #include <time.h> 59 #include <unistd.h> 60 #include <util.h> 61 62 #include "defs.h" 63 #include "usermgmt.h" 64 65 66 /* this struct describes a uid range */ 67 typedef struct range_t { 68 int r_from; /* low uid */ 69 int r_to; /* high uid */ 70 } range_t; 71 72 /* this struct encapsulates the user information */ 73 typedef struct user_t { 74 int u_flags; /* see below */ 75 int u_uid; /* uid of user */ 76 char *u_password; /* encrypted password */ 77 char *u_comment; /* comment field */ 78 char *u_home; /* home directory */ 79 char *u_primgrp; /* primary group */ 80 int u_groupc; /* # of secondary groups */ 81 const char *u_groupv[NGROUPS_MAX]; /* secondary groups */ 82 char *u_shell; /* user's shell */ 83 char *u_basedir; /* base directory for home */ 84 char *u_expire; /* when password will expire */ 85 char *u_inactive; /* when account will expire */ 86 char *u_skeldir; /* directory for startup files */ 87 char *u_class; /* login class */ 88 unsigned u_rsize; /* size of range array */ 89 unsigned u_rc; /* # of ranges */ 90 range_t *u_rv; /* the ranges */ 91 unsigned u_defrc; /* # of ranges in defaults */ 92 int u_preserve; /* preserve uids on deletion */ 93 int u_allow_samba; /* allow trailing '$' for samba login names */ 94 } user_t; 95 96 /* flags for which fields of the user_t replace the passwd entry */ 97 enum { 98 F_COMMENT = 0x0001, 99 F_DUPUID = 0x0002, 100 F_EXPIRE = 0x0004, 101 F_GROUP = 0x0008, 102 F_HOMEDIR = 0x0010, 103 F_MKDIR = 0x0020, 104 F_INACTIVE = 0x0040, 105 F_PASSWORD = 0x0080, 106 F_SECGROUP = 0x0100, 107 F_SHELL = 0x0200, 108 F_UID = 0x0400, 109 F_USERNAME = 0x0800, 110 F_CLASS = 0x1000 111 }; 112 113 #define CONFFILE "/etc/usermgmt.conf" 114 115 #ifndef DEF_GROUP 116 #define DEF_GROUP "users" 117 #endif 118 119 #ifndef DEF_BASEDIR 120 #define DEF_BASEDIR "/home" 121 #endif 122 123 #ifndef DEF_SKELDIR 124 #define DEF_SKELDIR "/etc/skel" 125 #endif 126 127 #ifndef DEF_SHELL 128 #define DEF_SHELL _PATH_CSHELL 129 #endif 130 131 #ifndef DEF_COMMENT 132 #define DEF_COMMENT "" 133 #endif 134 135 #ifndef DEF_LOWUID 136 #define DEF_LOWUID 1000 137 #endif 138 139 #ifndef DEF_HIGHUID 140 #define DEF_HIGHUID 60000 141 #endif 142 143 #ifndef DEF_INACTIVE 144 #define DEF_INACTIVE 0 145 #endif 146 147 #ifndef DEF_EXPIRE 148 #define DEF_EXPIRE NULL 149 #endif 150 151 #ifndef DEF_CLASS 152 #define DEF_CLASS "" 153 #endif 154 155 #ifndef WAITSECS 156 #define WAITSECS 10 157 #endif 158 159 #ifndef NOBODY_UID 160 #define NOBODY_UID 32767 161 #endif 162 163 /* some useful constants */ 164 enum { 165 MaxShellNameLen = 256, 166 MaxFileNameLen = MAXPATHLEN, 167 MaxUserNameLen = 32, 168 MaxFieldNameLen = 32, 169 MaxCommandLen = 2048, 170 MaxEntryLen = 2048, 171 PasswordLength = 2048, 172 173 DES_Len = 13, 174 175 LowGid = DEF_LOWUID, 176 HighGid = DEF_HIGHUID 177 }; 178 179 /* Full paths of programs used here */ 180 #define CHMOD "/bin/chmod" 181 #define CHOWN "/usr/sbin/chown" 182 #define MKDIR "/bin/mkdir" 183 #define MV "/bin/mv" 184 #define NOLOGIN "/sbin/nologin" 185 #define PAX "/bin/pax" 186 #define RM "/bin/rm" 187 188 #define UNSET_INACTIVE "Null (unset)" 189 #define UNSET_EXPIRY "Null (unset)" 190 191 static int asystem(const char *fmt, ...) 192 __attribute__((__format__(__printf__, 1, 2))); 193 194 static int verbose; 195 196 /* if *cpp is non-null, free it, then assign `n' chars of `s' to it */ 197 static void 198 memsave(char **cpp, const char *s, size_t n) 199 { 200 if (*cpp != NULL) { 201 FREE(*cpp); 202 } 203 NEWARRAY(char, *cpp, n + 1, exit(1)); 204 (void) memcpy(*cpp, s, n); 205 (*cpp)[n] = '\0'; 206 } 207 208 /* a replacement for system(3) */ 209 static int 210 asystem(const char *fmt, ...) 211 { 212 va_list vp; 213 char buf[MaxCommandLen]; 214 int ret; 215 216 va_start(vp, fmt); 217 (void) vsnprintf(buf, sizeof(buf), fmt, vp); 218 va_end(vp); 219 if (verbose) { 220 (void) printf("Command: %s\n", buf); 221 } 222 if ((ret = system(buf)) != 0) { 223 warnx("[Warning] can't system `%s'", buf); 224 } 225 return ret; 226 } 227 228 /* remove a users home directory, returning 1 for success (ie, no problems encountered) */ 229 static int 230 removehomedir(const char *user, int uid, const char *dir) 231 { 232 struct stat st; 233 234 /* userid not root? */ 235 if (uid == 0) { 236 warnx("Not deleting home directory `%s'; userid is 0", dir); 237 return 0; 238 } 239 240 /* directory exists (and is a directory!) */ 241 if (stat(dir, &st) < 0) { 242 warnx("Home directory `%s' doesn't exist", dir); 243 return 0; 244 } 245 if (!S_ISDIR(st.st_mode)) { 246 warnx("Home directory `%s' is not a directory", dir); 247 return 0; 248 } 249 250 /* userid matches directory owner? */ 251 if (st.st_uid != uid) { 252 warnx("User `%s' doesn't own directory `%s', not removed", user, dir); 253 return 0; 254 } 255 256 (void) seteuid(uid); 257 /* we add the "|| true" to keep asystem() quiet if there is a non-zero exit status. */ 258 (void) asystem("%s -rf %s > /dev/null 2>&1 || true", RM, dir); 259 (void) seteuid(0); 260 if (rmdir(dir) < 0) { 261 warnx("Unable to remove all files in `%s'", dir); 262 return 0; 263 } 264 return 1; 265 } 266 267 #define NetBSD_1_4_K 104110000 268 269 #if defined(__NetBSD_Version__) && (__NetBSD_Version__ < NetBSD_1_4_K) 270 /* bounds checking strncpy */ 271 static int 272 strlcpy(char *to, char *from, size_t tosize) 273 { 274 size_t n; 275 int fromsize; 276 277 fromsize = strlen(from); 278 n = MIN(tosize - 1, fromsize); 279 (void) memcpy(to, from, n); 280 to[n] = '\0'; 281 return fromsize; 282 } 283 #endif /* NetBSD < 1.4K */ 284 285 /* 286 * Copyright (c) 1997 Todd C. Miller <Todd.Miller (at) courtesan.com> 287 * All rights reserved. 288 * 289 * Redistribution and use in source and binary forms, with or without 290 * modification, are permitted provided that the following conditions 291 * are met: 292 * 1. Redistributions of source code must retain the above copyright 293 * notice, this list of conditions and the following disclaimer. 294 * 2. Redistributions in binary form must reproduce the above copyright 295 * notice, this list of conditions and the following disclaimer in the 296 * documentation and/or other materials provided with the distribution. 297 * 3. The name of the author may not be used to endorse or promote products 298 * derived from this software without specific prior written permission. 299 * 300 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 301 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 302 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 303 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 304 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 305 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 306 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 307 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 308 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 309 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 310 */ 311 312 /* 313 * research has shown that NetBSD 1.3H was the first version of -current 314 * with asprintf in libc. agc 315 */ 316 #define NetBSD_1_3_H 103080000 317 318 #if defined(__NetBSD_Version__) && (__NetBSD_Version__ < NetBSD_1_3_H) 319 320 int 321 asprintf(char **str, char const *fmt, ...) 322 { 323 int ret; 324 va_list ap; 325 FILE f; 326 unsigned char *_base; 327 328 f._flags = __SWR | __SSTR | __SALC; 329 f._bf._base = f._p = (unsigned char *)malloc(128); 330 if (f._bf._base == NULL) 331 goto err; 332 f._bf._size = f._w = 127; /* Leave room for the NUL */ 333 va_start(ap, fmt); 334 ret = vfprintf(&f, fmt, ap); 335 va_end(ap); 336 if (ret == -1) 337 goto err; 338 *f._p = '\0'; 339 _base = realloc(f._bf._base, (size_t)(ret + 1)); 340 if (_base == NULL) 341 goto err; 342 *str = (char *)_base; 343 return (ret); 344 345 err: 346 if (f._bf._base) 347 free(f._bf._base); 348 *str = NULL; 349 return (-1); 350 } 351 #endif /* NetBSD < 1.3H */ 352 353 /* return 1 if all of `s' is numeric */ 354 static int 355 is_number(char *s) 356 { 357 for ( ; *s ; s++) { 358 if (!isdigit((unsigned char) *s)) { 359 return 0; 360 } 361 } 362 return 1; 363 } 364 365 /* 366 * check that the effective uid is 0 - called from funcs which will 367 * modify data and config files. 368 */ 369 static void 370 checkeuid(void) 371 { 372 if (geteuid() != 0) { 373 errx(EXIT_FAILURE, "Program must be run as root"); 374 } 375 } 376 377 /* copy any dot files into the user's home directory */ 378 static int 379 copydotfiles(char *skeldir, int uid, int gid, char *dir) 380 { 381 struct dirent *dp; 382 DIR *dirp; 383 int n; 384 385 if ((dirp = opendir(skeldir)) == NULL) { 386 warn("can't open source . files dir `%s'", skeldir); 387 return 0; 388 } 389 for (n = 0; (dp = readdir(dirp)) != NULL && n == 0 ; ) { 390 if (strcmp(dp->d_name, ".") == 0 || 391 strcmp(dp->d_name, "..") == 0) { 392 continue; 393 } 394 n = 1; 395 } 396 (void) closedir(dirp); 397 if (n == 0) { 398 warnx("No \"dot\" initialisation files found"); 399 } else { 400 (void) asystem("cd %s && %s -rw -pe %s . %s", 401 skeldir, PAX, (verbose) ? "-v" : "", dir); 402 } 403 (void) asystem("%s -R -h %d:%d %s", CHOWN, uid, gid, dir); 404 (void) asystem("%s -R u+w %s", CHMOD, dir); 405 return n; 406 } 407 408 /* create a group entry with gid `gid' */ 409 static int 410 creategid(char *group, int gid, const char *name) 411 { 412 struct stat st; 413 FILE *from; 414 FILE *to; 415 char buf[MaxEntryLen]; 416 char f[MaxFileNameLen]; 417 int fd; 418 int cc; 419 420 if (getgrnam(group) != NULL) { 421 warnx("group `%s' already exists", group); 422 return 0; 423 } 424 if ((from = fopen(_PATH_GROUP, "r")) == NULL) { 425 warn("can't create gid for `%s': can't open `%s'", name, _PATH_GROUP); 426 return 0; 427 } 428 if (flock(fileno(from), LOCK_EX | LOCK_NB) < 0) { 429 warn("can't lock `%s'", _PATH_GROUP); 430 } 431 (void) fstat(fileno(from), &st); 432 (void) snprintf(f, sizeof(f), "%s.XXXXXX", _PATH_GROUP); 433 if ((fd = mkstemp(f)) < 0) { 434 (void) fclose(from); 435 warn("can't create gid: mkstemp failed"); 436 return 0; 437 } 438 if ((to = fdopen(fd, "w")) == NULL) { 439 (void) fclose(from); 440 (void) close(fd); 441 (void) unlink(f); 442 warn("can't create gid: fdopen `%s' failed", f); 443 return 0; 444 } 445 while ((cc = fread(buf, sizeof(char), sizeof(buf), from)) > 0) { 446 if (fwrite(buf, sizeof(char), (unsigned) cc, to) != cc) { 447 (void) fclose(from); 448 (void) close(fd); 449 (void) unlink(f); 450 warn("can't create gid: short write to `%s'", f); 451 return 0; 452 } 453 } 454 (void) fprintf(to, "%s:*:%d:%s\n", group, gid, name); 455 (void) fclose(from); 456 (void) fclose(to); 457 if (rename(f, _PATH_GROUP) < 0) { 458 (void) unlink(f); 459 warn("can't create gid: can't rename `%s' to `%s'", f, _PATH_GROUP); 460 return 0; 461 } 462 (void) chmod(_PATH_GROUP, st.st_mode & 07777); 463 syslog(LOG_INFO, "new group added: name=%s, gid=%d", group, gid); 464 return 1; 465 } 466 467 /* modify the group entry with name `group' to be newent */ 468 static int 469 modify_gid(char *group, char *newent) 470 { 471 struct stat st; 472 FILE *from; 473 FILE *to; 474 char buf[MaxEntryLen]; 475 char f[MaxFileNameLen]; 476 char *colon; 477 int groupc; 478 int entc; 479 int fd; 480 int cc; 481 482 if ((from = fopen(_PATH_GROUP, "r")) == NULL) { 483 warn("can't create gid for `%s': can't open `%s'", group, _PATH_GROUP); 484 return 0; 485 } 486 if (flock(fileno(from), LOCK_EX | LOCK_NB) < 0) { 487 warn("can't lock `%s'", _PATH_GROUP); 488 } 489 (void) fstat(fileno(from), &st); 490 (void) snprintf(f, sizeof(f), "%s.XXXXXX", _PATH_GROUP); 491 if ((fd = mkstemp(f)) < 0) { 492 (void) fclose(from); 493 warn("can't create gid: mkstemp failed"); 494 return 0; 495 } 496 if ((to = fdopen(fd, "w")) == NULL) { 497 (void) fclose(from); 498 (void) close(fd); 499 (void) unlink(f); 500 warn("can't create gid: fdopen `%s' failed", f); 501 return 0; 502 } 503 groupc = strlen(group); 504 while (fgets(buf, sizeof(buf), from) != NULL) { 505 cc = strlen(buf); 506 if ((colon = strchr(buf, ':')) == NULL) { 507 warn("badly formed entry `%s'", buf); 508 continue; 509 } 510 entc = (int)(colon - buf); 511 if (entc == groupc && strncmp(group, buf, (unsigned) entc) == 0) { 512 if (newent == NULL) { 513 continue; 514 } else { 515 cc = strlen(newent); 516 (void) strlcpy(buf, newent, sizeof(buf)); 517 } 518 } 519 if (fwrite(buf, sizeof(char), (unsigned) cc, to) != cc) { 520 (void) fclose(from); 521 (void) close(fd); 522 (void) unlink(f); 523 warn("can't create gid: short write to `%s'", f); 524 return 0; 525 } 526 } 527 (void) fclose(from); 528 (void) fclose(to); 529 if (rename(f, _PATH_GROUP) < 0) { 530 (void) unlink(f); 531 warn("can't create gid: can't rename `%s' to `%s'", f, _PATH_GROUP); 532 return 0; 533 } 534 (void) chmod(_PATH_GROUP, st.st_mode & 07777); 535 if (newent == NULL) { 536 syslog(LOG_INFO, "group deleted: name=%s", group); 537 } else { 538 syslog(LOG_INFO, "group information modified: name=%s", group); 539 } 540 return 1; 541 } 542 543 /* modify the group entries for all `groups', by adding `user' */ 544 static int 545 append_group(char *user, int ngroups, const char **groups) 546 { 547 struct group *grp; 548 struct stat st; 549 FILE *from; 550 FILE *to; 551 char buf[MaxEntryLen]; 552 char f[MaxFileNameLen]; 553 char *colon; 554 int groupc; 555 int entc; 556 int fd; 557 int nc; 558 int cc; 559 int i; 560 int j; 561 562 for (i = 0 ; i < ngroups ; i++) { 563 if ((grp = getgrnam(groups[i])) == NULL) { 564 warnx("can't append group `%s' for user `%s'", groups[i], user); 565 } else { 566 for (j = 0 ; grp->gr_mem[j] ; j++) { 567 if (strcmp(user, grp->gr_mem[j]) == 0) { 568 /* already in it */ 569 groups[i] = ""; 570 } 571 } 572 } 573 } 574 if ((from = fopen(_PATH_GROUP, "r")) == NULL) { 575 warn("can't append group for `%s': can't open `%s'", user, _PATH_GROUP); 576 return 0; 577 } 578 if (flock(fileno(from), LOCK_EX | LOCK_NB) < 0) { 579 warn("can't lock `%s'", _PATH_GROUP); 580 } 581 (void) fstat(fileno(from), &st); 582 (void) snprintf(f, sizeof(f), "%s.XXXXXX", _PATH_GROUP); 583 if ((fd = mkstemp(f)) < 0) { 584 (void) fclose(from); 585 warn("can't create gid: mkstemp failed"); 586 return 0; 587 } 588 if ((to = fdopen(fd, "w")) == NULL) { 589 (void) fclose(from); 590 (void) close(fd); 591 (void) unlink(f); 592 warn("can't create gid: fdopen `%s' failed", f); 593 return 0; 594 } 595 while (fgets(buf, sizeof(buf), from) != NULL) { 596 cc = strlen(buf); 597 if ((colon = strchr(buf, ':')) == NULL) { 598 warn("badly formed entry `%s'", buf); 599 continue; 600 } 601 entc = (int)(colon - buf); 602 for (i = 0 ; i < ngroups ; i++) { 603 if ((groupc = strlen(groups[i])) == 0) { 604 continue; 605 } 606 if (entc == groupc && strncmp(groups[i], buf, (unsigned) entc) == 0) { 607 if ((nc = snprintf(&buf[cc - 1], 608 sizeof(buf) - cc + 1, 609 "%s%s\n", 610 (buf[cc - 2] == ':') ? "" : ",", 611 user)) < 0) { 612 warnx("Warning: group `%s' entry too long", groups[i]); 613 } 614 cc += nc - 1; 615 } 616 } 617 if (fwrite(buf, sizeof(char), (unsigned) cc, to) != cc) { 618 (void) fclose(from); 619 (void) close(fd); 620 (void) unlink(f); 621 warn("can't create gid: short write to `%s'", f); 622 return 0; 623 } 624 } 625 (void) fclose(from); 626 (void) fclose(to); 627 if (rename(f, _PATH_GROUP) < 0) { 628 (void) unlink(f); 629 warn("can't create gid: can't rename `%s' to `%s'", f, _PATH_GROUP); 630 return 0; 631 } 632 (void) chmod(_PATH_GROUP, st.st_mode & 07777); 633 return 1; 634 } 635 636 /* return 1 if `login' is a valid login name */ 637 static int 638 valid_login(char *login_name, int allow_samba) 639 { 640 unsigned char *cp; 641 642 if (strlen(login_name) >= LOGIN_NAME_MAX) { 643 return 0; 644 } 645 for (cp = login_name ; *cp ; cp++) { 646 if (!isalnum(*cp) && *cp != '.' && *cp != '_' && *cp != '-') { 647 #ifdef EXTENSIONS 648 /* check for a trailing '$' in a Samba user name */ 649 if (allow_samba && *cp == '$' && *(cp + 1) == 0x0) { 650 return 1; 651 } 652 #endif 653 return 0; 654 } 655 } 656 return 1; 657 } 658 659 /* return 1 if `group' is a valid group name */ 660 static int 661 valid_group(char *group) 662 { 663 unsigned char *cp; 664 665 for (cp = group ; *cp ; cp++) { 666 if (!isalnum(*cp)) { 667 return 0; 668 } 669 } 670 return 1; 671 } 672 673 /* find the next gid in the range lo .. hi */ 674 static int 675 getnextgid(int *gidp, int lo, int hi) 676 { 677 for (*gidp = lo ; *gidp < hi ; *gidp += 1) { 678 if (getgrgid((gid_t)*gidp) == NULL) { 679 return 1; 680 } 681 } 682 return 0; 683 } 684 685 #ifdef EXTENSIONS 686 /* save a range of uids */ 687 static int 688 save_range(user_t *up, char *cp) 689 { 690 int from; 691 int to; 692 int i; 693 694 if (up->u_rsize == 0) { 695 up->u_rsize = 32; 696 NEWARRAY(range_t, up->u_rv, up->u_rsize, return(0)); 697 } else if (up->u_rc == up->u_rsize) { 698 up->u_rsize *= 2; 699 RENEW(range_t, up->u_rv, up->u_rsize, return(0)); 700 } 701 if (up->u_rv && sscanf(cp, "%d..%d", &from, &to) == 2) { 702 for (i = up->u_defrc ; i < up->u_rc ; i++) { 703 if (up->u_rv[i].r_from == from && up->u_rv[i].r_to == to) { 704 break; 705 } 706 } 707 if (i == up->u_rc) { 708 up->u_rv[up->u_rc].r_from = from; 709 up->u_rv[up->u_rc].r_to = to; 710 up->u_rc += 1; 711 } 712 } else { 713 warnx("Bad range `%s'", cp); 714 return 0; 715 } 716 return 1; 717 } 718 #endif 719 720 /* set the defaults in the defaults file */ 721 static int 722 setdefaults(user_t *up) 723 { 724 char template[MaxFileNameLen]; 725 FILE *fp; 726 int ret; 727 int fd; 728 #ifdef EXTENSIONS 729 int i; 730 #endif 731 732 (void) snprintf(template, sizeof(template), "%s.XXXXXX", CONFFILE); 733 if ((fd = mkstemp(template)) < 0) { 734 warnx("can't mkstemp `%s' for writing", CONFFILE); 735 return 0; 736 } 737 if ((fp = fdopen(fd, "w")) == NULL) { 738 warn("can't fdopen `%s' for writing", CONFFILE); 739 return 0; 740 } 741 ret = 1; 742 if (fprintf(fp, "group\t\t%s\n", up->u_primgrp) <= 0 || 743 fprintf(fp, "base_dir\t%s\n", up->u_basedir) <= 0 || 744 fprintf(fp, "skel_dir\t%s\n", up->u_skeldir) <= 0 || 745 fprintf(fp, "shell\t\t%s\n", up->u_shell) <= 0 || 746 #ifdef EXTENSIONS 747 fprintf(fp, "class\t\t%s\n", up->u_class) <= 0 || 748 #endif 749 fprintf(fp, "inactive\t%s\n", (up->u_inactive == NULL) ? UNSET_INACTIVE : up->u_inactive) <= 0 || 750 fprintf(fp, "expire\t\t%s\n", (up->u_expire == NULL) ? UNSET_EXPIRY : up->u_expire) <= 0 || 751 fprintf(fp, "preserve\t%s\n", (up->u_preserve == 0) ? "false" : "true") <= 0) { 752 warn("can't write to `%s'", CONFFILE); 753 ret = 0; 754 } 755 #ifdef EXTENSIONS 756 for (i = (up->u_defrc != up->u_rc) ? up->u_defrc : 0 ; i < up->u_rc ; i++) { 757 if (fprintf(fp, "range\t\t%d..%d\n", up->u_rv[i].r_from, up->u_rv[i].r_to) <= 0) { 758 warn("can't write to `%s'", CONFFILE); 759 ret = 0; 760 } 761 } 762 #endif 763 (void) fclose(fp); 764 if (ret) { 765 ret = ((rename(template, CONFFILE) == 0) && (chmod(CONFFILE, 0644) == 0)); 766 } 767 return ret; 768 } 769 770 /* read the defaults file */ 771 static void 772 read_defaults(user_t *up) 773 { 774 struct stat st; 775 size_t lineno; 776 size_t len; 777 FILE *fp; 778 unsigned char *cp; 779 unsigned char *s; 780 781 memsave(&up->u_primgrp, DEF_GROUP, strlen(DEF_GROUP)); 782 memsave(&up->u_basedir, DEF_BASEDIR, strlen(DEF_BASEDIR)); 783 memsave(&up->u_skeldir, DEF_SKELDIR, strlen(DEF_SKELDIR)); 784 memsave(&up->u_shell, DEF_SHELL, strlen(DEF_SHELL)); 785 memsave(&up->u_comment, DEF_COMMENT, strlen(DEF_COMMENT)); 786 #ifdef EXTENSIONS 787 memsave(&up->u_class, DEF_CLASS, strlen(DEF_CLASS)); 788 #endif 789 up->u_rsize = 16; 790 up->u_defrc = 0; 791 NEWARRAY(range_t, up->u_rv, up->u_rsize, exit(1)); 792 up->u_inactive = DEF_INACTIVE; 793 up->u_expire = DEF_EXPIRE; 794 if ((fp = fopen(CONFFILE, "r")) == NULL) { 795 if (stat(CONFFILE, &st) < 0 && !setdefaults(up)) { 796 warn("can't create `%s' defaults file", CONFFILE); 797 } 798 fp = fopen(CONFFILE, "r"); 799 } 800 if (fp != NULL) { 801 while ((s = fparseln(fp, &len, &lineno, NULL, 0)) != NULL) { 802 if (strncmp(s, "group", 5) == 0) { 803 for (cp = s + 5 ; *cp && isspace(*cp) ; cp++) { 804 } 805 memsave(&up->u_primgrp, cp, strlen(cp)); 806 } else if (strncmp(s, "base_dir", 8) == 0) { 807 for (cp = s + 8 ; *cp && isspace(*cp) ; cp++) { 808 } 809 memsave(&up->u_basedir, cp, strlen(cp)); 810 } else if (strncmp(s, "skel_dir", 8) == 0) { 811 for (cp = s + 8 ; *cp && isspace(*cp) ; cp++) { 812 } 813 memsave(&up->u_skeldir, cp, strlen(cp)); 814 } else if (strncmp(s, "shell", 5) == 0) { 815 for (cp = s + 5 ; *cp && isspace(*cp) ; cp++) { 816 } 817 memsave(&up->u_shell, cp, strlen(cp)); 818 #ifdef EXTENSIONS 819 } else if (strncmp(s, "class", 5) == 0) { 820 for (cp = s + 5 ; *cp && isspace(*cp) ; cp++) { 821 } 822 memsave(&up->u_class, cp, strlen(cp)); 823 #endif 824 } else if (strncmp(s, "inactive", 8) == 0) { 825 for (cp = s + 8 ; *cp && isspace(*cp) ; cp++) { 826 } 827 if (strcmp(cp, UNSET_INACTIVE) == 0) { 828 if (up->u_inactive) { 829 FREE(up->u_inactive); 830 } 831 up->u_inactive = NULL; 832 } else { 833 memsave(&up->u_inactive, cp, strlen(cp)); 834 } 835 #ifdef EXTENSIONS 836 } else if (strncmp(s, "range", 5) == 0) { 837 for (cp = s + 5 ; *cp && isspace(*cp) ; cp++) { 838 } 839 (void) save_range(up, cp); 840 #endif 841 #ifdef EXTENSIONS 842 } else if (strncmp(s, "preserve", 8) == 0) { 843 for (cp = s + 8 ; *cp && isspace(*cp) ; cp++) { 844 } 845 up->u_preserve = (strncmp(cp, "true", 4) == 0) ? 1 : 846 (strncmp(cp, "yes", 3) == 0) ? 1 : 847 atoi(cp); 848 #endif 849 } else if (strncmp(s, "expire", 6) == 0) { 850 for (cp = s + 6 ; *cp && isspace(*cp) ; cp++) { 851 } 852 if (strcmp(cp, UNSET_EXPIRY) == 0) { 853 if (up->u_expire) { 854 FREE(up->u_expire); 855 } 856 up->u_expire = NULL; 857 } else { 858 memsave(&up->u_expire, cp, strlen(cp)); 859 } 860 } 861 (void) free(s); 862 } 863 (void) fclose(fp); 864 } 865 if (up->u_rc == 0) { 866 up->u_rv[up->u_rc].r_from = DEF_LOWUID; 867 up->u_rv[up->u_rc].r_to = DEF_HIGHUID; 868 up->u_rc += 1; 869 } 870 up->u_defrc = up->u_rc; 871 } 872 873 /* return the next valid unused uid */ 874 static int 875 getnextuid(int sync_uid_gid, int *uid, int low_uid, int high_uid) 876 { 877 for (*uid = low_uid ; *uid <= high_uid ; (*uid)++) { 878 if (getpwuid((uid_t)(*uid)) == NULL && *uid != NOBODY_UID) { 879 if (sync_uid_gid) { 880 if (getgrgid((gid_t)(*uid)) == NULL) { 881 return 1; 882 } 883 } else { 884 return 1; 885 } 886 } 887 } 888 return 0; 889 } 890 891 /* structure which defines a password type */ 892 typedef struct passwd_type_t { 893 const char *type; /* optional type descriptor */ 894 int desc_length; /* length of type descriptor */ 895 int length; /* length of password */ 896 const char *regex; /* regexp to output the password */ 897 int re_sub; /* subscript of regexp to use */ 898 } passwd_type_t; 899 900 static passwd_type_t passwd_types[] = { 901 { "$sha1", 5, 28, "\\$[^$]+\\$[^$]+\\$[^$]+\\$(.*)", 1 }, /* SHA1 */ 902 { "$2a", 3, 54, "\\$[^$]+\\$[^$]+\\$(.*)", 1 }, /* Blowfish */ 903 { "$1", 2, 34, NULL, 0 }, /* MD5 */ 904 { "", 0, DES_Len,NULL, 0 }, /* standard DES */ 905 { NULL, -1, -1, NULL, 0 } /* none - terminate search */ 906 }; 907 908 /* return non-zero if it's a valid password - check length for cipher type */ 909 static int 910 valid_password_length(char *newpasswd) 911 { 912 passwd_type_t *pwtp; 913 regmatch_t matchv[10]; 914 regex_t r; 915 916 for (pwtp = passwd_types ; pwtp->desc_length >= 0 ; pwtp++) { 917 if (strncmp(newpasswd, pwtp->type, pwtp->desc_length) == 0) { 918 if (pwtp->regex == NULL) { 919 return strlen(newpasswd) == pwtp->length; 920 } 921 (void) regcomp(&r, pwtp->regex, REG_EXTENDED); 922 if (regexec(&r, newpasswd, 10, matchv, 0) == 0) { 923 regfree(&r); 924 return (int)(matchv[pwtp->re_sub].rm_eo - matchv[pwtp->re_sub].rm_so + 1) == pwtp->length; 925 } 926 regfree(&r); 927 } 928 } 929 return 0; 930 } 931 932 /* look for a valid time, return 0 if it was specified but bad */ 933 static int 934 scantime(time_t *tp, char *s) 935 { 936 struct tm tm; 937 938 *tp = 0; 939 if (s != NULL) { 940 (void) memset(&tm, 0, sizeof(tm)); 941 if (strptime(s, "%c", &tm) != NULL) { 942 *tp = mktime(&tm); 943 } else if (strptime(s, "%B %d %Y", &tm) != NULL) { 944 *tp = mktime(&tm); 945 } else if (isdigit((unsigned char) *s)) { 946 *tp = atoi(s); 947 } else { 948 return 0; 949 } 950 } 951 return 1; 952 } 953 954 /* add a user */ 955 static int 956 adduser(char *login_name, user_t *up) 957 { 958 struct group *grp; 959 struct stat st; 960 time_t expire; 961 time_t inactive; 962 char password[PasswordLength + 1]; 963 char home[MaxFileNameLen]; 964 char buf[MaxFileNameLen]; 965 int sync_uid_gid; 966 int masterfd; 967 int ptmpfd; 968 int gid; 969 int cc; 970 int i; 971 972 if (!valid_login(login_name, up->u_allow_samba)) { 973 errx(EXIT_FAILURE, "`%s' is not a valid login name", login_name); 974 } 975 if ((masterfd = open(_PATH_MASTERPASSWD, O_RDONLY)) < 0) { 976 err(EXIT_FAILURE, "can't open `%s'", _PATH_MASTERPASSWD); 977 } 978 if (flock(masterfd, LOCK_EX | LOCK_NB) < 0) { 979 err(EXIT_FAILURE, "can't lock `%s'", _PATH_MASTERPASSWD); 980 } 981 pw_init(); 982 if ((ptmpfd = pw_lock(WAITSECS)) < 0) { 983 (void) close(masterfd); 984 err(EXIT_FAILURE, "can't obtain pw_lock"); 985 } 986 while ((cc = read(masterfd, buf, sizeof(buf))) > 0) { 987 if (write(ptmpfd, buf, (size_t)(cc)) != cc) { 988 (void) close(masterfd); 989 (void) close(ptmpfd); 990 pw_abort(); 991 err(EXIT_FAILURE, "short write to /etc/ptmp (not %d chars)", cc); 992 } 993 } 994 /* if no uid was specified, get next one in [low_uid..high_uid] range */ 995 sync_uid_gid = (strcmp(up->u_primgrp, "=uid") == 0); 996 if (up->u_uid == -1) { 997 int got_id = 0; 998 999 /* 1000 * Look for a free UID in the command line ranges (if any). 1001 * These start after the ranges specified in the config file. 1002 */ 1003 for (i = up->u_defrc; !got_id && i < up->u_rc ; i++) { 1004 got_id = getnextuid(sync_uid_gid, &up->u_uid, 1005 up->u_rv[i].r_from, up->u_rv[i].r_to); 1006 } 1007 /* 1008 * If there were no free UIDs in the command line ranges, 1009 * try the ranges from the config file (there will always 1010 * be at least one default). 1011 */ 1012 for (i = 0; !got_id && i < up->u_defrc; i++) { 1013 got_id = getnextuid(sync_uid_gid, &up->u_uid, 1014 up->u_rv[i].r_from, up->u_rv[i].r_to); 1015 } 1016 if (!got_id) { 1017 (void) close(ptmpfd); 1018 pw_abort(); 1019 errx(EXIT_FAILURE, "can't get next uid for %d", up->u_uid); 1020 } 1021 } 1022 /* check uid isn't already allocated */ 1023 if (!(up->u_flags & F_DUPUID) && getpwuid((uid_t)(up->u_uid)) != NULL) { 1024 (void) close(ptmpfd); 1025 pw_abort(); 1026 errx(EXIT_FAILURE, "uid %d is already in use", up->u_uid); 1027 } 1028 /* if -g=uid was specified, check gid is unused */ 1029 if (sync_uid_gid) { 1030 if (getgrgid((gid_t)(up->u_uid)) != NULL) { 1031 (void) close(ptmpfd); 1032 pw_abort(); 1033 errx(EXIT_FAILURE, "gid %d is already in use", up->u_uid); 1034 } 1035 gid = up->u_uid; 1036 } else if ((grp = getgrnam(up->u_primgrp)) != NULL) { 1037 gid = grp->gr_gid; 1038 } else if (is_number(up->u_primgrp) && 1039 (grp = getgrgid((gid_t)atoi(up->u_primgrp))) != NULL) { 1040 gid = grp->gr_gid; 1041 } else { 1042 (void) close(ptmpfd); 1043 pw_abort(); 1044 errx(EXIT_FAILURE, "group %s not found", up->u_primgrp); 1045 } 1046 /* check name isn't already in use */ 1047 if (!(up->u_flags & F_DUPUID) && getpwnam(login_name) != NULL) { 1048 (void) close(ptmpfd); 1049 pw_abort(); 1050 errx(EXIT_FAILURE, "already a `%s' user", login_name); 1051 } 1052 if (up->u_flags & F_HOMEDIR) { 1053 (void) strlcpy(home, up->u_home, sizeof(home)); 1054 } else { 1055 /* if home directory hasn't been given, make it up */ 1056 (void) snprintf(home, sizeof(home), "%s/%s", up->u_basedir, login_name); 1057 } 1058 if (!scantime(&inactive, up->u_inactive)) { 1059 warnx("Warning: inactive time `%s' invalid, account expiry off", 1060 up->u_inactive); 1061 } 1062 if (!scantime(&expire, up->u_expire)) { 1063 warnx("Warning: expire time `%s' invalid, password expiry off", 1064 up->u_expire); 1065 } 1066 if (lstat(home, &st) < 0 && !(up->u_flags & F_MKDIR)) { 1067 warnx("Warning: home directory `%s' doesn't exist, and -m was not specified", 1068 home); 1069 } 1070 password[sizeof(password) - 1] = '\0'; 1071 if (up->u_password != NULL && valid_password_length(up->u_password)) { 1072 (void) strlcpy(password, up->u_password, sizeof(password)); 1073 } else { 1074 (void) memset(password, '*', DES_Len); 1075 password[DES_Len] = 0; 1076 if (up->u_password != NULL) { 1077 warnx("Password `%s' is invalid: setting it to `%s'", 1078 up->u_password, password); 1079 } 1080 } 1081 cc = snprintf(buf, sizeof(buf), "%s:%s:%d:%d:%s:%ld:%ld:%s:%s:%s\n", 1082 login_name, 1083 password, 1084 up->u_uid, 1085 gid, 1086 #ifdef EXTENSIONS 1087 up->u_class, 1088 #else 1089 "", 1090 #endif 1091 (long) inactive, 1092 (long) expire, 1093 up->u_comment, 1094 home, 1095 up->u_shell); 1096 if (write(ptmpfd, buf, (size_t) cc) != cc) { 1097 (void) close(ptmpfd); 1098 pw_abort(); 1099 err(EXIT_FAILURE, "can't add `%s'", buf); 1100 } 1101 if (up->u_flags & F_MKDIR) { 1102 if (lstat(home, &st) == 0) { 1103 (void) close(ptmpfd); 1104 pw_abort(); 1105 errx(EXIT_FAILURE, "home directory `%s' already exists", home); 1106 } else { 1107 if (asystem("%s -p %s", MKDIR, home) != 0) { 1108 (void) close(ptmpfd); 1109 pw_abort(); 1110 err(EXIT_FAILURE, "can't mkdir `%s'", home); 1111 } 1112 (void) copydotfiles(up->u_skeldir, up->u_uid, gid, home); 1113 } 1114 } 1115 if (strcmp(up->u_primgrp, "=uid") == 0 && 1116 getgrnam(login_name) == NULL && 1117 !creategid(login_name, gid, login_name)) { 1118 (void) close(ptmpfd); 1119 pw_abort(); 1120 errx(EXIT_FAILURE, "can't create gid %d for login name %s", gid, login_name); 1121 } 1122 if (up->u_groupc > 0 && !append_group(login_name, up->u_groupc, up->u_groupv)) { 1123 (void) close(ptmpfd); 1124 pw_abort(); 1125 errx(EXIT_FAILURE, "can't append `%s' to new groups", login_name); 1126 } 1127 (void) close(ptmpfd); 1128 #if PW_MKDB_ARGC == 2 1129 if (pw_mkdb(login_name, 0) < 0) { 1130 pw_abort(); 1131 err(EXIT_FAILURE, "pw_mkdb failed"); 1132 } 1133 #else 1134 if (pw_mkdb() < 0) { 1135 pw_abort(); 1136 err(EXIT_FAILURE, "pw_mkdb failed"); 1137 } 1138 #endif 1139 syslog(LOG_INFO, "new user added: name=%s, uid=%d, gid=%d, home=%s, shell=%s", 1140 login_name, up->u_uid, gid, home, up->u_shell); 1141 return 1; 1142 } 1143 1144 /* remove a user from the groups file */ 1145 static int 1146 rm_user_from_groups(char *login_name) 1147 { 1148 struct stat st; 1149 regmatch_t matchv[10]; 1150 regex_t r; 1151 FILE *from; 1152 FILE *to; 1153 char line[MaxEntryLen]; 1154 char buf[MaxEntryLen]; 1155 char f[MaxFileNameLen]; 1156 int fd; 1157 int cc; 1158 int sc; 1159 1160 (void) snprintf(line, sizeof(line), "(:|,)(%s)(,|$)", login_name); 1161 if (regcomp(&r, line, REG_EXTENDED|REG_NEWLINE) != 0) { 1162 warn("can't compile regular expression `%s'", line); 1163 return 0; 1164 } 1165 if ((from = fopen(_PATH_GROUP, "r")) == NULL) { 1166 warn("can't remove gid for `%s': can't open `%s'", login_name, _PATH_GROUP); 1167 return 0; 1168 } 1169 if (flock(fileno(from), LOCK_EX | LOCK_NB) < 0) { 1170 warn("can't lock `%s'", _PATH_GROUP); 1171 } 1172 (void) fstat(fileno(from), &st); 1173 (void) snprintf(f, sizeof(f), "%s.XXXXXX", _PATH_GROUP); 1174 if ((fd = mkstemp(f)) < 0) { 1175 (void) fclose(from); 1176 warn("can't create gid: mkstemp failed"); 1177 return 0; 1178 } 1179 if ((to = fdopen(fd, "w")) == NULL) { 1180 (void) fclose(from); 1181 (void) close(fd); 1182 (void) unlink(f); 1183 warn("can't create gid: fdopen `%s' failed", f); 1184 return 0; 1185 } 1186 while (fgets(buf, sizeof(buf), from) > 0) { 1187 cc = strlen(buf); 1188 if (regexec(&r, buf, 10, matchv, 0) == 0) { 1189 if (buf[(int)matchv[1].rm_so] == ',') { 1190 matchv[2].rm_so = matchv[1].rm_so; 1191 } else if (matchv[2].rm_eo != matchv[3].rm_eo) { 1192 matchv[2].rm_eo = matchv[3].rm_eo; 1193 } 1194 cc -= (int) matchv[2].rm_eo; 1195 sc = (int) matchv[2].rm_so; 1196 if (fwrite(buf, sizeof(char), sc, to) != sc || 1197 fwrite(&buf[(int)matchv[2].rm_eo], sizeof(char), cc, to) != cc) { 1198 (void) fclose(from); 1199 (void) close(fd); 1200 (void) unlink(f); 1201 warn("can't create gid: short write to `%s'", f); 1202 return 0; 1203 } 1204 } else if (fwrite(buf, sizeof(char), (unsigned) cc, to) != cc) { 1205 (void) fclose(from); 1206 (void) close(fd); 1207 (void) unlink(f); 1208 warn("can't create gid: short write to `%s'", f); 1209 return 0; 1210 } 1211 } 1212 (void) fclose(from); 1213 (void) fclose(to); 1214 if (rename(f, _PATH_GROUP) < 0) { 1215 (void) unlink(f); 1216 warn("can't create gid: can't rename `%s' to `%s'", f, _PATH_GROUP); 1217 return 0; 1218 } 1219 (void) chmod(_PATH_GROUP, st.st_mode & 07777); 1220 return 1; 1221 } 1222 1223 /* check that the user or group is local, not from YP/NIS */ 1224 static int 1225 is_local(char *name, const char *file) 1226 { 1227 FILE *fp; 1228 char buf[MaxEntryLen]; 1229 int len; 1230 int ret; 1231 1232 if ((fp = fopen(file, "r")) == NULL) { 1233 err(EXIT_FAILURE, "can't open `%s'", file); 1234 } 1235 len = strlen(name); 1236 for (ret = 0 ; fgets(buf, sizeof(buf), fp) != NULL ; ) { 1237 if (strncmp(buf, name, len) == 0 && buf[len] == ':') { 1238 ret = 1; 1239 break; 1240 } 1241 } 1242 (void) fclose(fp); 1243 return ret; 1244 } 1245 1246 /* modify a user */ 1247 static int 1248 moduser(char *login_name, char *newlogin, user_t *up, int allow_samba) 1249 { 1250 struct passwd *pwp; 1251 struct group *grp; 1252 const char *homedir; 1253 size_t colonc; 1254 size_t loginc; 1255 size_t len; 1256 size_t cc; 1257 FILE *master; 1258 char newdir[MaxFileNameLen]; 1259 char buf[MaxEntryLen]; 1260 char *colon; 1261 int masterfd; 1262 int ptmpfd; 1263 int error; 1264 1265 if (!valid_login(newlogin, allow_samba)) { 1266 errx(EXIT_FAILURE, "`%s' is not a valid login name", login_name); 1267 } 1268 if ((pwp = getpwnam(login_name)) == NULL) { 1269 errx(EXIT_FAILURE, "No such user `%s'", login_name); 1270 } 1271 if (!is_local(login_name, _PATH_MASTERPASSWD)) { 1272 errx(EXIT_FAILURE, "User `%s' must be a local user", login_name); 1273 } 1274 /* keep dir name in case we need it for '-m' */ 1275 homedir = pwp->pw_dir; 1276 1277 if ((masterfd = open(_PATH_MASTERPASSWD, O_RDONLY)) < 0) { 1278 err(EXIT_FAILURE, "can't open `%s'", _PATH_MASTERPASSWD); 1279 } 1280 if (flock(masterfd, LOCK_EX | LOCK_NB) < 0) { 1281 err(EXIT_FAILURE, "can't lock `%s'", _PATH_MASTERPASSWD); 1282 } 1283 pw_init(); 1284 if ((ptmpfd = pw_lock(WAITSECS)) < 0) { 1285 (void) close(masterfd); 1286 err(EXIT_FAILURE, "can't obtain pw_lock"); 1287 } 1288 if ((master = fdopen(masterfd, "r")) == NULL) { 1289 (void) close(masterfd); 1290 (void) close(ptmpfd); 1291 pw_abort(); 1292 err(EXIT_FAILURE, "can't fdopen fd for %s", _PATH_MASTERPASSWD); 1293 } 1294 if (up != NULL) { 1295 if (up->u_flags & F_USERNAME) { 1296 /* if changing name, check new name isn't already in use */ 1297 if (strcmp(login_name, newlogin) != 0 && getpwnam(newlogin) != NULL) { 1298 (void) close(ptmpfd); 1299 pw_abort(); 1300 errx(EXIT_FAILURE, "already a `%s' user", newlogin); 1301 } 1302 pwp->pw_name = newlogin; 1303 1304 /* 1305 * Provide a new directory name in case the 1306 * home directory is to be moved. 1307 */ 1308 if (up->u_flags & F_MKDIR) { 1309 snprintf(newdir, sizeof(newdir), "%s/%s", up->u_basedir, newlogin); 1310 pwp->pw_dir = newdir; 1311 } 1312 } 1313 if (up->u_flags & F_PASSWORD) { 1314 if (up->u_password != NULL) { 1315 if (!valid_password_length(up->u_password)) { 1316 (void) close(ptmpfd); 1317 pw_abort(); 1318 errx(EXIT_FAILURE, "Invalid password: `%s'", 1319 up->u_password); 1320 } 1321 pwp->pw_passwd = up->u_password; 1322 } 1323 } 1324 if (up->u_flags & F_UID) { 1325 /* check uid isn't already allocated */ 1326 if (!(up->u_flags & F_DUPUID) && getpwuid((uid_t)(up->u_uid)) != NULL) { 1327 (void) close(ptmpfd); 1328 pw_abort(); 1329 errx(EXIT_FAILURE, "uid %d is already in use", up->u_uid); 1330 } 1331 pwp->pw_uid = up->u_uid; 1332 } 1333 if (up->u_flags & F_GROUP) { 1334 /* if -g=uid was specified, check gid is unused */ 1335 if (strcmp(up->u_primgrp, "=uid") == 0) { 1336 if (getgrgid((gid_t)(up->u_uid)) != NULL) { 1337 (void) close(ptmpfd); 1338 pw_abort(); 1339 errx(EXIT_FAILURE, "gid %d is already in use", up->u_uid); 1340 } 1341 pwp->pw_gid = up->u_uid; 1342 } else if ((grp = getgrnam(up->u_primgrp)) != NULL) { 1343 pwp->pw_gid = grp->gr_gid; 1344 } else if (is_number(up->u_primgrp) && 1345 (grp = getgrgid((gid_t)atoi(up->u_primgrp))) != NULL) { 1346 pwp->pw_gid = grp->gr_gid; 1347 } else { 1348 (void) close(ptmpfd); 1349 pw_abort(); 1350 errx(EXIT_FAILURE, "group %s not found", up->u_primgrp); 1351 } 1352 } 1353 if (up->u_flags & F_INACTIVE) { 1354 if (!scantime(&pwp->pw_change, up->u_inactive)) { 1355 warnx("Warning: inactive time `%s' invalid, password expiry off", 1356 up->u_inactive); 1357 } 1358 } 1359 if (up->u_flags & F_EXPIRE) { 1360 if (!scantime(&pwp->pw_expire, up->u_expire)) { 1361 warnx("Warning: expire time `%s' invalid, password expiry off", 1362 up->u_expire); 1363 } 1364 } 1365 if (up->u_flags & F_COMMENT) 1366 pwp->pw_gecos = up->u_comment; 1367 if (up->u_flags & F_HOMEDIR) 1368 pwp->pw_dir = up->u_home; 1369 if (up->u_flags & F_SHELL) 1370 pwp->pw_shell = up->u_shell; 1371 #ifdef EXTENSIONS 1372 if (up->u_flags & F_CLASS) 1373 pwp->pw_class = up->u_class; 1374 #endif 1375 } 1376 loginc = strlen(login_name); 1377 while (fgets(buf, sizeof(buf), master) != NULL) { 1378 if ((colon = strchr(buf, ':')) == NULL) { 1379 warnx("Malformed entry `%s'. Skipping", buf); 1380 continue; 1381 } 1382 colonc = (size_t)(colon - buf); 1383 if (strncmp(login_name, buf, loginc) == 0 && loginc == colonc) { 1384 if (up != NULL) { 1385 len = snprintf(buf, sizeof(buf), "%s:%s:%d:%d:" 1386 #ifdef EXTENSIONS 1387 "%s" 1388 #endif 1389 ":%ld:%ld:%s:%s:%s\n", 1390 newlogin, 1391 pwp->pw_passwd, 1392 pwp->pw_uid, 1393 pwp->pw_gid, 1394 #ifdef EXTENSIONS 1395 pwp->pw_class, 1396 #endif 1397 (long)pwp->pw_change, 1398 (long)pwp->pw_expire, 1399 pwp->pw_gecos, 1400 pwp->pw_dir, 1401 pwp->pw_shell); 1402 if (write(ptmpfd, buf, len) != len) { 1403 (void) close(ptmpfd); 1404 pw_abort(); 1405 err(EXIT_FAILURE, "can't add `%s'", buf); 1406 } 1407 } 1408 } else { 1409 len = strlen(buf); 1410 if ((cc = write(ptmpfd, buf, len)) != len) { 1411 (void) close(masterfd); 1412 (void) close(ptmpfd); 1413 pw_abort(); 1414 err(EXIT_FAILURE, "short write to /etc/ptmp (%lld not %lld chars)", 1415 (long long)cc, 1416 (long long)len); 1417 } 1418 } 1419 } 1420 if (up != NULL) { 1421 if ((up->u_flags & F_MKDIR) && 1422 asystem("%s %s %s", MV, homedir, pwp->pw_dir) != 0) { 1423 (void) close(ptmpfd); 1424 pw_abort(); 1425 err(EXIT_FAILURE, "can't move `%s' to `%s'", 1426 homedir, pwp->pw_dir); 1427 } 1428 if (up->u_groupc > 0 && 1429 !append_group(newlogin, up->u_groupc, up->u_groupv)) { 1430 (void) close(ptmpfd); 1431 pw_abort(); 1432 errx(EXIT_FAILURE, "can't append `%s' to new groups", 1433 newlogin); 1434 } 1435 } 1436 (void) close(ptmpfd); 1437 #if PW_MKDB_ARGC == 2 1438 if (up != NULL && strcmp(login_name, newlogin) == 0) { 1439 error = pw_mkdb(login_name, 0); 1440 } else { 1441 error = pw_mkdb(NULL, 0); 1442 } 1443 #else 1444 error = pw_mkdb(); 1445 #endif 1446 if (error < 0) { 1447 pw_abort(); 1448 err(EXIT_FAILURE, "pw_mkdb failed"); 1449 } 1450 if (up == NULL) { 1451 syslog(LOG_INFO, "user removed: name=%s", login_name); 1452 } else if (strcmp(login_name, newlogin) == 0) { 1453 syslog(LOG_INFO, "user information modified: name=%s, uid=%d, gid=%d, home=%s, shell=%s", 1454 login_name, pwp->pw_uid, pwp->pw_gid, pwp->pw_dir, pwp->pw_shell); 1455 } else { 1456 syslog(LOG_INFO, "user information modified: name=%s, new name=%s, uid=%d, gid=%d, home=%s, shell=%s", 1457 login_name, newlogin, pwp->pw_uid, pwp->pw_gid, pwp->pw_dir, pwp->pw_shell); 1458 } 1459 return 1; 1460 } 1461 1462 1463 #ifdef EXTENSIONS 1464 /* see if we can find out the user struct */ 1465 static struct passwd * 1466 find_user_info(char *name) 1467 { 1468 struct passwd *pwp; 1469 1470 if ((pwp = getpwnam(name)) != NULL) { 1471 return pwp; 1472 } 1473 if (is_number(name) && (pwp = getpwuid((uid_t)atoi(name))) != NULL) { 1474 return pwp; 1475 } 1476 return NULL; 1477 } 1478 #endif 1479 1480 #ifdef EXTENSIONS 1481 /* see if we can find out the group struct */ 1482 static struct group * 1483 find_group_info(char *name) 1484 { 1485 struct group *grp; 1486 1487 if ((grp = getgrnam(name)) != NULL) { 1488 return grp; 1489 } 1490 if (is_number(name) && (grp = getgrgid((gid_t)atoi(name))) != NULL) { 1491 return grp; 1492 } 1493 return NULL; 1494 } 1495 #endif 1496 1497 /* print out usage message, and then exit */ 1498 void 1499 usermgmt_usage(const char *prog) 1500 { 1501 if (strcmp(prog, "useradd") == 0) { 1502 (void) fprintf(stderr, "usage: %s -D [-b basedir] [-e expiry] " 1503 "[-f inactive] [-g group]\n\t[-r lowuid..highuid] " 1504 "[-s shell] [-L class]\n", prog); 1505 (void) fprintf(stderr, "usage: %s [-G group] [-b basedir] " 1506 "[-c comment] [-d homedir] [-e expiry]\n\t[-f inactive] " 1507 "[-g group] [-k skeletondir] [-m] [-o] [-p password]\n" 1508 "\t[-r lowuid..highuid] [-s shell]\n\t[-u uid] [-v] user\n", 1509 prog); 1510 } else if (strcmp(prog, "usermod") == 0) { 1511 (void) fprintf(stderr, "usage: %s [-G group] [-c comment] " 1512 "[-d homedir] [-e expire] [-f inactive]\n\t[-g group] " 1513 "[-l newname] [-m] [-o] [-p password] [-s shell] [-u uid]\n" 1514 "\t[-L class] [-v] user\n", prog); 1515 } else if (strcmp(prog, "userdel") == 0) { 1516 (void) fprintf(stderr, "usage: %s -D [-p preserve]\n", prog); 1517 (void) fprintf(stderr, 1518 "usage: %s [-p preserve] [-r] [-v] user\n", prog); 1519 #ifdef EXTENSIONS 1520 } else if (strcmp(prog, "userinfo") == 0) { 1521 (void) fprintf(stderr, "usage: %s [-e] [-v] user\n", prog); 1522 #endif 1523 } else if (strcmp(prog, "groupadd") == 0) { 1524 (void) fprintf(stderr, "usage: %s [-g gid] [-o] [-v] group\n", 1525 prog); 1526 } else if (strcmp(prog, "groupdel") == 0) { 1527 (void) fprintf(stderr, "usage: %s [-v] group\n", prog); 1528 } else if (strcmp(prog, "groupmod") == 0) { 1529 (void) fprintf(stderr, 1530 "usage: %s [-g gid] [-o] [-n newname] [-v] group\n", prog); 1531 } else if (strcmp(prog, "user") == 0 || strcmp(prog, "group") == 0) { 1532 (void) fprintf(stderr, 1533 "usage: %s ( add | del | mod | info ) ...\n", prog); 1534 #ifdef EXTENSIONS 1535 } else if (strcmp(prog, "groupinfo") == 0) { 1536 (void) fprintf(stderr, "usage: %s [-e] [-v] group\n", prog); 1537 #endif 1538 } 1539 exit(EXIT_FAILURE); 1540 /* NOTREACHED */ 1541 } 1542 1543 #ifdef EXTENSIONS 1544 #define ADD_OPT_EXTENSIONS "p:r:vL:S" 1545 #else 1546 #define ADD_OPT_EXTENSIONS 1547 #endif 1548 1549 int 1550 useradd(int argc, char **argv) 1551 { 1552 user_t u; 1553 int defaultfield; 1554 int bigD; 1555 int c; 1556 #ifdef EXTENSIONS 1557 int i; 1558 #endif 1559 1560 (void) memset(&u, 0, sizeof(u)); 1561 read_defaults(&u); 1562 u.u_uid = -1; 1563 defaultfield = bigD = 0; 1564 while ((c = getopt(argc, argv, "DG:b:c:d:e:f:g:k:mou:s:" ADD_OPT_EXTENSIONS)) != -1) { 1565 switch(c) { 1566 case 'D': 1567 bigD = 1; 1568 break; 1569 case 'G': 1570 while ((u.u_groupv[u.u_groupc] = strsep(&optarg, ",")) != NULL && 1571 u.u_groupc < NGROUPS_MAX) { 1572 if (u.u_groupv[u.u_groupc][0] != 0) { 1573 u.u_groupc++; 1574 } 1575 } 1576 if (optarg != NULL) { 1577 warnx("Truncated list of secondary groups to %d entries", NGROUPS_MAX); 1578 } 1579 break; 1580 #ifdef EXTENSIONS 1581 case 'S': 1582 u.u_allow_samba = 1; 1583 break; 1584 #endif 1585 case 'b': 1586 defaultfield = 1; 1587 memsave(&u.u_basedir, optarg, strlen(optarg)); 1588 break; 1589 case 'c': 1590 memsave(&u.u_comment, optarg, strlen(optarg)); 1591 break; 1592 case 'd': 1593 memsave(&u.u_home, optarg, strlen(optarg)); 1594 u.u_flags |= F_HOMEDIR; 1595 break; 1596 case 'e': 1597 defaultfield = 1; 1598 memsave(&u.u_expire, optarg, strlen(optarg)); 1599 break; 1600 case 'f': 1601 defaultfield = 1; 1602 memsave(&u.u_inactive, optarg, strlen(optarg)); 1603 break; 1604 case 'g': 1605 defaultfield = 1; 1606 memsave(&u.u_primgrp, optarg, strlen(optarg)); 1607 break; 1608 case 'k': 1609 defaultfield = 1; 1610 memsave(&u.u_skeldir, optarg, strlen(optarg)); 1611 break; 1612 #ifdef EXTENSIONS 1613 case 'L': 1614 defaultfield = 1; 1615 memsave(&u.u_class, optarg, strlen(optarg)); 1616 break; 1617 #endif 1618 case 'm': 1619 u.u_flags |= F_MKDIR; 1620 break; 1621 case 'o': 1622 u.u_flags |= F_DUPUID; 1623 break; 1624 #ifdef EXTENSIONS 1625 case 'p': 1626 memsave(&u.u_password, optarg, strlen(optarg)); 1627 break; 1628 #endif 1629 #ifdef EXTENSIONS 1630 case 'r': 1631 defaultfield = 1; 1632 (void) save_range(&u, optarg); 1633 break; 1634 #endif 1635 case 's': 1636 defaultfield = 1; 1637 memsave(&u.u_shell, optarg, strlen(optarg)); 1638 break; 1639 case 'u': 1640 if (!is_number(optarg)) { 1641 errx(EXIT_FAILURE, "When using [-u uid], the uid must be numeric"); 1642 } 1643 u.u_uid = atoi(optarg); 1644 break; 1645 #ifdef EXTENSIONS 1646 case 'v': 1647 verbose = 1; 1648 break; 1649 #endif 1650 default: 1651 usermgmt_usage("useradd"); 1652 /* NOTREACHED */ 1653 } 1654 } 1655 if (bigD) { 1656 if (defaultfield) { 1657 checkeuid(); 1658 return setdefaults(&u) ? EXIT_SUCCESS : EXIT_FAILURE; 1659 } 1660 (void) printf("group\t\t%s\n", u.u_primgrp); 1661 (void) printf("base_dir\t%s\n", u.u_basedir); 1662 (void) printf("skel_dir\t%s\n", u.u_skeldir); 1663 (void) printf("shell\t\t%s\n", u.u_shell); 1664 #ifdef EXTENSIONS 1665 (void) printf("class\t\t%s\n", u.u_class); 1666 #endif 1667 (void) printf("inactive\t%s\n", (u.u_inactive == NULL) ? UNSET_INACTIVE : u.u_inactive); 1668 (void) printf("expire\t\t%s\n", (u.u_expire == NULL) ? UNSET_EXPIRY : u.u_expire); 1669 #ifdef EXTENSIONS 1670 for (i = 0 ; i < u.u_rc ; i++) { 1671 (void) printf("range\t\t%d..%d\n", u.u_rv[i].r_from, u.u_rv[i].r_to); 1672 } 1673 #endif 1674 return EXIT_SUCCESS; 1675 } 1676 argc -= optind; 1677 argv += optind; 1678 if (argc != 1) { 1679 usermgmt_usage("useradd"); 1680 } 1681 checkeuid(); 1682 openlog("useradd", LOG_PID, LOG_USER); 1683 return adduser(*argv, &u) ? EXIT_SUCCESS : EXIT_FAILURE; 1684 } 1685 1686 #ifdef EXTENSIONS 1687 #define MOD_OPT_EXTENSIONS "p:vL:S" 1688 #else 1689 #define MOD_OPT_EXTENSIONS 1690 #endif 1691 1692 int 1693 usermod(int argc, char **argv) 1694 { 1695 user_t u; 1696 char newuser[MaxUserNameLen + 1]; 1697 int c, have_new_user; 1698 1699 (void) memset(&u, 0, sizeof(u)); 1700 (void) memset(newuser, 0, sizeof(newuser)); 1701 read_defaults(&u); 1702 have_new_user = 0; 1703 while ((c = getopt(argc, argv, "G:c:d:e:f:g:l:mos:u:" MOD_OPT_EXTENSIONS)) != -1) { 1704 switch(c) { 1705 case 'G': 1706 while ((u.u_groupv[u.u_groupc] = strsep(&optarg, ",")) != NULL && 1707 u.u_groupc < NGROUPS_MAX) { 1708 if (u.u_groupv[u.u_groupc][0] != 0) { 1709 u.u_groupc++; 1710 } 1711 } 1712 if (optarg != NULL) { 1713 warnx("Truncated list of secondary groups to %d entries", NGROUPS_MAX); 1714 } 1715 u.u_flags |= F_SECGROUP; 1716 break; 1717 #ifdef EXTENSIONS 1718 case 'S': 1719 u.u_allow_samba = 1; 1720 break; 1721 #endif 1722 case 'c': 1723 memsave(&u.u_comment, optarg, strlen(optarg)); 1724 u.u_flags |= F_COMMENT; 1725 break; 1726 case 'd': 1727 memsave(&u.u_home, optarg, strlen(optarg)); 1728 u.u_flags |= F_HOMEDIR; 1729 break; 1730 case 'e': 1731 memsave(&u.u_expire, optarg, strlen(optarg)); 1732 u.u_flags |= F_EXPIRE; 1733 break; 1734 case 'f': 1735 memsave(&u.u_inactive, optarg, strlen(optarg)); 1736 u.u_flags |= F_INACTIVE; 1737 break; 1738 case 'g': 1739 memsave(&u.u_primgrp, optarg, strlen(optarg)); 1740 u.u_flags |= F_GROUP; 1741 break; 1742 case 'l': 1743 (void) strlcpy(newuser, optarg, sizeof(newuser)); 1744 have_new_user = 1; 1745 u.u_flags |= F_USERNAME; 1746 break; 1747 #ifdef EXTENSIONS 1748 case 'L': 1749 memsave(&u.u_class, optarg, strlen(optarg)); 1750 u.u_flags |= F_CLASS; 1751 break; 1752 #endif 1753 case 'm': 1754 u.u_flags |= F_MKDIR; 1755 break; 1756 case 'o': 1757 u.u_flags |= F_DUPUID; 1758 break; 1759 #ifdef EXTENSIONS 1760 case 'p': 1761 memsave(&u.u_password, optarg, strlen(optarg)); 1762 u.u_flags |= F_PASSWORD; 1763 break; 1764 #endif 1765 case 's': 1766 memsave(&u.u_shell, optarg, strlen(optarg)); 1767 u.u_flags |= F_SHELL; 1768 break; 1769 case 'u': 1770 if (!is_number(optarg)) { 1771 errx(EXIT_FAILURE, "When using [-u uid], the uid must be numeric"); 1772 } 1773 u.u_uid = atoi(optarg); 1774 u.u_flags |= F_UID; 1775 break; 1776 #ifdef EXTENSIONS 1777 case 'v': 1778 verbose = 1; 1779 break; 1780 #endif 1781 default: 1782 usermgmt_usage("usermod"); 1783 /* NOTREACHED */ 1784 } 1785 } 1786 if ((u.u_flags & F_MKDIR) && !(u.u_flags & F_HOMEDIR) && 1787 !(u.u_flags & F_USERNAME)) { 1788 warnx("option 'm' useless without 'd' or 'l' -- ignored"); 1789 u.u_flags &= ~F_MKDIR; 1790 } 1791 argc -= optind; 1792 argv += optind; 1793 if (argc != 1) { 1794 usermgmt_usage("usermod"); 1795 } 1796 checkeuid(); 1797 openlog("usermod", LOG_PID, LOG_USER); 1798 return moduser(*argv, (have_new_user) ? newuser : *argv, &u, u.u_allow_samba) ? EXIT_SUCCESS : EXIT_FAILURE; 1799 } 1800 1801 #ifdef EXTENSIONS 1802 #define DEL_OPT_EXTENSIONS "Dp:vS" 1803 #else 1804 #define DEL_OPT_EXTENSIONS 1805 #endif 1806 1807 int 1808 userdel(int argc, char **argv) 1809 { 1810 struct passwd *pwp; 1811 user_t u; 1812 char password[PasswordLength + 1]; 1813 int defaultfield; 1814 int rmhome; 1815 int bigD; 1816 int c; 1817 1818 (void) memset(&u, 0, sizeof(u)); 1819 read_defaults(&u); 1820 defaultfield = bigD = rmhome = 0; 1821 while ((c = getopt(argc, argv, "r" DEL_OPT_EXTENSIONS)) != -1) { 1822 switch(c) { 1823 #ifdef EXTENSIONS 1824 case 'D': 1825 bigD = 1; 1826 break; 1827 #endif 1828 #ifdef EXTENSIONS 1829 case 'S': 1830 u.u_allow_samba = 1; 1831 break; 1832 #endif 1833 #ifdef EXTENSIONS 1834 case 'p': 1835 defaultfield = 1; 1836 u.u_preserve = (strcmp(optarg, "true") == 0) ? 1 : 1837 (strcmp(optarg, "yes") == 0) ? 1 : 1838 atoi(optarg); 1839 break; 1840 #endif 1841 case 'r': 1842 rmhome = 1; 1843 break; 1844 #ifdef EXTENSIONS 1845 case 'v': 1846 verbose = 1; 1847 break; 1848 #endif 1849 default: 1850 usermgmt_usage("userdel"); 1851 /* NOTREACHED */ 1852 } 1853 } 1854 #ifdef EXTENSIONS 1855 if (bigD) { 1856 if (defaultfield) { 1857 checkeuid(); 1858 return setdefaults(&u) ? EXIT_SUCCESS : EXIT_FAILURE; 1859 } 1860 (void) printf("preserve\t%s\n", (u.u_preserve) ? "true" : "false"); 1861 return EXIT_SUCCESS; 1862 } 1863 #endif 1864 argc -= optind; 1865 argv += optind; 1866 if (argc != 1) { 1867 usermgmt_usage("userdel"); 1868 } 1869 checkeuid(); 1870 if ((pwp = getpwnam(*argv)) == NULL) { 1871 warnx("No such user `%s'", *argv); 1872 return EXIT_FAILURE; 1873 } 1874 if (rmhome) 1875 (void)removehomedir(pwp->pw_name, pwp->pw_uid, pwp->pw_dir); 1876 if (u.u_preserve) { 1877 u.u_flags |= F_SHELL; 1878 memsave(&u.u_shell, NOLOGIN, strlen(NOLOGIN)); 1879 (void) memset(password, '*', DES_Len); 1880 password[DES_Len] = 0; 1881 memsave(&u.u_password, password, strlen(password)); 1882 u.u_flags |= F_PASSWORD; 1883 openlog("userdel", LOG_PID, LOG_USER); 1884 return moduser(*argv, *argv, &u, u.u_allow_samba) ? EXIT_SUCCESS : EXIT_FAILURE; 1885 } 1886 if (!rm_user_from_groups(*argv)) { 1887 return 0; 1888 } 1889 openlog("userdel", LOG_PID, LOG_USER); 1890 return moduser(*argv, *argv, NULL, u.u_allow_samba) ? EXIT_SUCCESS : EXIT_FAILURE; 1891 } 1892 1893 #ifdef EXTENSIONS 1894 #define GROUP_ADD_OPT_EXTENSIONS "v" 1895 #else 1896 #define GROUP_ADD_OPT_EXTENSIONS 1897 #endif 1898 1899 /* add a group */ 1900 int 1901 groupadd(int argc, char **argv) 1902 { 1903 int dupgid; 1904 int gid; 1905 int c; 1906 1907 gid = -1; 1908 dupgid = 0; 1909 while ((c = getopt(argc, argv, "g:o" GROUP_ADD_OPT_EXTENSIONS)) != -1) { 1910 switch(c) { 1911 case 'g': 1912 if (!is_number(optarg)) { 1913 errx(EXIT_FAILURE, "When using [-g gid], the gid must be numeric"); 1914 } 1915 gid = atoi(optarg); 1916 break; 1917 case 'o': 1918 dupgid = 1; 1919 break; 1920 #ifdef EXTENSIONS 1921 case 'v': 1922 verbose = 1; 1923 break; 1924 #endif 1925 default: 1926 usermgmt_usage("groupadd"); 1927 /* NOTREACHED */ 1928 } 1929 } 1930 argc -= optind; 1931 argv += optind; 1932 if (argc != 1) { 1933 usermgmt_usage("groupadd"); 1934 } 1935 checkeuid(); 1936 if (gid < 0 && !getnextgid(&gid, LowGid, HighGid)) { 1937 err(EXIT_FAILURE, "can't add group: can't get next gid"); 1938 } 1939 if (!dupgid && getgrgid((gid_t) gid) != NULL) { 1940 errx(EXIT_FAILURE, "can't add group: gid %d is a duplicate", gid); 1941 } 1942 if (!valid_group(*argv)) { 1943 warnx("warning - invalid group name `%s'", *argv); 1944 } 1945 openlog("groupadd", LOG_PID, LOG_USER); 1946 if (!creategid(*argv, gid, "")) { 1947 errx(EXIT_FAILURE, "can't add group: problems with %s file", _PATH_GROUP); 1948 } 1949 return EXIT_SUCCESS; 1950 } 1951 1952 #ifdef EXTENSIONS 1953 #define GROUP_DEL_OPT_EXTENSIONS "v" 1954 #else 1955 #define GROUP_DEL_OPT_EXTENSIONS 1956 #endif 1957 1958 /* remove a group */ 1959 int 1960 groupdel(int argc, char **argv) 1961 { 1962 int c; 1963 1964 while ((c = getopt(argc, argv, "" GROUP_DEL_OPT_EXTENSIONS)) != -1) { 1965 switch(c) { 1966 #ifdef EXTENSIONS 1967 case 'v': 1968 verbose = 1; 1969 break; 1970 #endif 1971 default: 1972 usermgmt_usage("groupdel"); 1973 /* NOTREACHED */ 1974 } 1975 } 1976 argc -= optind; 1977 argv += optind; 1978 if (argc != 1) { 1979 usermgmt_usage("groupdel"); 1980 } 1981 checkeuid(); 1982 openlog("groupdel", LOG_PID, LOG_USER); 1983 if (!modify_gid(*argv, NULL)) { 1984 err(EXIT_FAILURE, "can't change %s file", _PATH_GROUP); 1985 } 1986 return EXIT_SUCCESS; 1987 } 1988 1989 #ifdef EXTENSIONS 1990 #define GROUP_MOD_OPT_EXTENSIONS "v" 1991 #else 1992 #define GROUP_MOD_OPT_EXTENSIONS 1993 #endif 1994 1995 /* modify a group */ 1996 int 1997 groupmod(int argc, char **argv) 1998 { 1999 struct group *grp; 2000 char buf[MaxEntryLen]; 2001 char *newname; 2002 char **cpp; 2003 int dupgid; 2004 int gid; 2005 int cc; 2006 int c; 2007 2008 gid = -1; 2009 dupgid = 0; 2010 newname = NULL; 2011 while ((c = getopt(argc, argv, "g:on:" GROUP_MOD_OPT_EXTENSIONS)) != -1) { 2012 switch(c) { 2013 case 'g': 2014 if (!is_number(optarg)) { 2015 errx(EXIT_FAILURE, "When using [-g gid], the gid must be numeric"); 2016 } 2017 gid = atoi(optarg); 2018 break; 2019 case 'o': 2020 dupgid = 1; 2021 break; 2022 case 'n': 2023 memsave(&newname, optarg, strlen(optarg)); 2024 break; 2025 #ifdef EXTENSIONS 2026 case 'v': 2027 verbose = 1; 2028 break; 2029 #endif 2030 default: 2031 usermgmt_usage("groupmod"); 2032 /* NOTREACHED */ 2033 } 2034 } 2035 argc -= optind; 2036 argv += optind; 2037 if (argc != 1) { 2038 usermgmt_usage("groupmod"); 2039 } 2040 checkeuid(); 2041 if (gid < 0 && newname == NULL) { 2042 err(EXIT_FAILURE, "Nothing to change"); 2043 } 2044 if (dupgid && gid < 0) { 2045 err(EXIT_FAILURE, "Duplicate which gid?"); 2046 } 2047 if ((grp = getgrnam(*argv)) == NULL) { 2048 err(EXIT_FAILURE, "can't find group `%s' to modify", *argv); 2049 } 2050 if (!is_local(*argv, _PATH_GROUP)) { 2051 errx(EXIT_FAILURE, "Group `%s' must be a local group", *argv); 2052 } 2053 if (newname != NULL && !valid_group(newname)) { 2054 warn("warning - invalid group name `%s'", newname); 2055 } 2056 cc = snprintf(buf, sizeof(buf), "%s:%s:%d:", 2057 (newname) ? newname : grp->gr_name, 2058 grp->gr_passwd, 2059 (gid < 0) ? grp->gr_gid : gid); 2060 for (cpp = grp->gr_mem ; *cpp && cc < sizeof(buf) ; cpp++) { 2061 cc += snprintf(&buf[cc], sizeof(buf) - cc, "%s%s", *cpp, 2062 (cpp[1] == NULL) ? "" : ","); 2063 } 2064 cc += snprintf(&buf[cc], sizeof(buf) - cc, "\n"); 2065 openlog("groupmod", LOG_PID, LOG_USER); 2066 if (!modify_gid(*argv, buf)) { 2067 err(EXIT_FAILURE, "can't change %s file", _PATH_GROUP); 2068 } 2069 return EXIT_SUCCESS; 2070 } 2071 2072 #ifdef EXTENSIONS 2073 /* display user information */ 2074 int 2075 userinfo(int argc, char **argv) 2076 { 2077 struct passwd *pwp; 2078 struct group *grp; 2079 char buf[MaxEntryLen]; 2080 char **cpp; 2081 int exists; 2082 int cc; 2083 int i; 2084 2085 exists = 0; 2086 while ((i = getopt(argc, argv, "ev")) != -1) { 2087 switch(i) { 2088 case 'e': 2089 exists = 1; 2090 break; 2091 case 'v': 2092 verbose = 1; 2093 break; 2094 default: 2095 usermgmt_usage("userinfo"); 2096 /* NOTREACHED */ 2097 } 2098 } 2099 argc -= optind; 2100 argv += optind; 2101 if (argc != 1) { 2102 usermgmt_usage("userinfo"); 2103 } 2104 pwp = find_user_info(*argv); 2105 if (exists) { 2106 exit((pwp) ? EXIT_SUCCESS : EXIT_FAILURE); 2107 } 2108 if (pwp == NULL) { 2109 errx(EXIT_FAILURE, "can't find user `%s'", *argv); 2110 } 2111 (void) printf("login\t%s\n", pwp->pw_name); 2112 (void) printf("passwd\t%s\n", pwp->pw_passwd); 2113 (void) printf("uid\t%d\n", pwp->pw_uid); 2114 for (cc = 0 ; (grp = getgrent()) != NULL ; ) { 2115 for (cpp = grp->gr_mem ; *cpp ; cpp++) { 2116 if (strcmp(*cpp, *argv) == 0 && grp->gr_gid != pwp->pw_gid) { 2117 cc += snprintf(&buf[cc], sizeof(buf) - cc, "%s ", grp->gr_name); 2118 } 2119 } 2120 } 2121 if ((grp = getgrgid(pwp->pw_gid)) == NULL) { 2122 (void) printf("groups\t%d %s\n", pwp->pw_gid, buf); 2123 } else { 2124 (void) printf("groups\t%s %s\n", grp->gr_name, buf); 2125 } 2126 (void) printf("change\t%s", pwp->pw_change ? ctime(&pwp->pw_change) : "NEVER\n"); 2127 #ifdef EXTENSIONS 2128 (void) printf("class\t%s\n", pwp->pw_class); 2129 #endif 2130 (void) printf("gecos\t%s\n", pwp->pw_gecos); 2131 (void) printf("dir\t%s\n", pwp->pw_dir); 2132 (void) printf("shell\t%s\n", pwp->pw_shell); 2133 (void) printf("expire\t%s", pwp->pw_expire ? ctime(&pwp->pw_expire) : "NEVER\n"); 2134 return EXIT_SUCCESS; 2135 } 2136 #endif 2137 2138 #ifdef EXTENSIONS 2139 /* display user information */ 2140 int 2141 groupinfo(int argc, char **argv) 2142 { 2143 struct group *grp; 2144 char **cpp; 2145 int exists; 2146 int i; 2147 2148 exists = 0; 2149 while ((i = getopt(argc, argv, "ev")) != -1) { 2150 switch(i) { 2151 case 'e': 2152 exists = 1; 2153 break; 2154 case 'v': 2155 verbose = 1; 2156 break; 2157 default: 2158 usermgmt_usage("groupinfo"); 2159 /* NOTREACHED */ 2160 } 2161 } 2162 argc -= optind; 2163 argv += optind; 2164 if (argc != 1) { 2165 usermgmt_usage("groupinfo"); 2166 } 2167 grp = find_group_info(*argv); 2168 if (exists) { 2169 exit((grp) ? EXIT_SUCCESS : EXIT_FAILURE); 2170 } 2171 if (grp == NULL) { 2172 errx(EXIT_FAILURE, "can't find group `%s'", *argv); 2173 } 2174 (void) printf("name\t%s\n", grp->gr_name); 2175 (void) printf("passwd\t%s\n", grp->gr_passwd); 2176 (void) printf("gid\t%d\n", grp->gr_gid); 2177 (void) printf("members\t"); 2178 for (cpp = grp->gr_mem ; *cpp ; cpp++) { 2179 (void) printf("%s ", *cpp); 2180 } 2181 (void) fputc('\n', stdout); 2182 return EXIT_SUCCESS; 2183 } 2184 #endif 2185
Indexes created Fri Sep 26 20:09:58 GMT 2025