pw_user.c revision 286202
1/*- 2 * Copyright (C) 1996 3 * David L. Nugent. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 */ 27 28#ifndef lint 29static const char rcsid[] = 30 "$FreeBSD: head/usr.sbin/pw/pw_user.c 286202 2015-08-02 13:32:23Z bapt $"; 31#endif /* not lint */ 32 33#include <sys/param.h> 34#include <sys/resource.h> 35#include <sys/time.h> 36#include <sys/types.h> 37 38#include <ctype.h> 39#include <dirent.h> 40#include <err.h> 41#include <fcntl.h> 42#include <grp.h> 43#include <pwd.h> 44#include <libutil.h> 45#include <login_cap.h> 46#include <paths.h> 47#include <string.h> 48#include <sysexits.h> 49#include <termios.h> 50#include <unistd.h> 51 52#include "pw.h" 53#include "bitmap.h" 54#include "psdate.h" 55 56#define LOGNAMESIZE (MAXLOGNAME-1) 57 58static char locked_str[] = "*LOCKED*"; 59 60static struct passwd fakeuser = { 61 "nouser", 62 "*", 63 -1, 64 -1, 65 0, 66 "", 67 "User &", 68 "/nonexistent", 69 "/bin/sh", 70 0, 71 0 72}; 73 74static int print_user(struct passwd *pwd, bool pretty, bool v7); 75static uid_t pw_uidpolicy(struct userconf *cnf, intmax_t id); 76static uid_t pw_gidpolicy(struct userconf *cnf, char *grname, char *nam, 77 gid_t prefer, bool dryrun); 78static char *pw_homepolicy(struct userconf * cnf, char *homedir, 79 const char *user); 80static char *pw_shellpolicy(struct userconf * cnf); 81static char *pw_password(struct userconf * cnf, char const * user, 82 bool dryrun); 83static char *shell_path(char const * path, char *shells[], char *sh); 84static void rmat(uid_t uid); 85static void rmopie(char const * name); 86 87static void 88create_and_populate_homedir(struct userconf *cnf, struct passwd *pwd, 89 const char *skeldir, mode_t homemode, bool update) 90{ 91 int skelfd = -1; 92 93 if (skeldir != NULL && *skeldir != '\0') { 94 if (*skeldir == '/') 95 skeldir++; 96 skelfd = openat(conf.rootfd, skeldir, O_DIRECTORY|O_CLOEXEC); 97 } 98 99 copymkdir(conf.rootfd, pwd->pw_dir, skelfd, homemode, pwd->pw_uid, 100 pwd->pw_gid, 0); 101 pw_log(cnf, update ? M_UPDATE : M_ADD, W_USER, "%s(%ju) home %s made", 102 pwd->pw_name, (uintmax_t)pwd->pw_uid, pwd->pw_dir); 103} 104 105static int 106pw_set_passwd(struct passwd *pwd, int fd, bool precrypted, bool update) 107{ 108 int b, istty; 109 struct termios t, n; 110 login_cap_t *lc; 111 char line[_PASSWORD_LEN+1]; 112 char *p; 113 114 if (fd == '-') { 115 if (!pwd->pw_passwd || *pwd->pw_passwd != '*') { 116 pwd->pw_passwd = "*"; /* No access */ 117 return (1); 118 } 119 return (0); 120 } 121 122 if ((istty = isatty(fd))) { 123 if (tcgetattr(fd, &t) == -1) 124 istty = 0; 125 else { 126 n = t; 127 n.c_lflag &= ~(ECHO); 128 tcsetattr(fd, TCSANOW, &n); 129 printf("%s%spassword for user %s:", 130 update ? "new " : "", 131 precrypted ? "encrypted " : "", 132 pwd->pw_name); 133 fflush(stdout); 134 } 135 } 136 b = read(fd, line, sizeof(line) - 1); 137 if (istty) { /* Restore state */ 138 tcsetattr(fd, TCSANOW, &t); 139 fputc('\n', stdout); 140 fflush(stdout); 141 } 142 143 if (b < 0) 144 err(EX_IOERR, "-%c file descriptor", 145 precrypted ? 'H' : 'h'); 146 line[b] = '\0'; 147 if ((p = strpbrk(line, "\r\n")) != NULL) 148 *p = '\0'; 149 if (!*line) 150 errx(EX_DATAERR, "empty password read on file descriptor %d", 151 fd); 152 if (precrypted) { 153 if (strchr(line, ':') != NULL) 154 errx(EX_DATAERR, "bad encrypted password"); 155 pwd->pw_passwd = strdup(line); 156 } else { 157 lc = login_getpwclass(pwd); 158 if (lc == NULL || 159 login_setcryptfmt(lc, "sha512", NULL) == NULL) 160 warn("setting crypt(3) format"); 161 login_close(lc); 162 pwd->pw_passwd = pw_pwcrypt(line); 163 } 164 return (1); 165} 166 167static void 168perform_chgpwent(const char *name, struct passwd *pwd, char *nispasswd) 169{ 170 int rc; 171 struct passwd *nispwd; 172 173 /* duplicate for nis so that chgpwent is not modifying before NIS */ 174 if (nispasswd && *nispasswd == '/') 175 nispwd = pw_dup(pwd); 176 177 rc = chgpwent(name, pwd); 178 if (rc == -1) 179 errx(EX_IOERR, "user '%s' does not exist (NIS?)", pwd->pw_name); 180 else if (rc != 0) 181 err(EX_IOERR, "passwd file update"); 182 183 if (nispasswd && *nispasswd == '/') { 184 rc = chgnispwent(nispasswd, name, nispwd); 185 if (rc == -1) 186 warn("User '%s' not found in NIS passwd", pwd->pw_name); 187 else if (rc != 0) 188 warn("NIS passwd update"); 189 /* NOTE: NIS-only update errors are not fatal */ 190 } 191} 192 193/* 194 * The M_LOCK and M_UNLOCK functions simply add or remove 195 * a "*LOCKED*" prefix from in front of the password to 196 * prevent it decoding correctly, and therefore prevents 197 * access. Of course, this only prevents access via 198 * password authentication (not ssh, kerberos or any 199 * other method that does not use the UNIX password) but 200 * that is a known limitation. 201 */ 202static int 203pw_userlock(char *arg1, int mode) 204{ 205 struct passwd *pwd = NULL; 206 char *passtmp = NULL; 207 char *name; 208 bool locked = false; 209 uid_t id; 210 211 if (geteuid() != 0) 212 errx(EX_NOPERM, "you must be root"); 213 214 if (arg1 == NULL) 215 errx(EX_DATAERR, "username or id required"); 216 217 if (strspn(arg1, "0123456789") == strlen(arg1)) 218 id = pw_checkid(arg1, UID_MAX); 219 else 220 name = arg1; 221 222 pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id); 223 if (pwd == NULL) { 224 if (name == NULL) 225 errx(EX_NOUSER, "no such uid `%ju'", (uintmax_t) id); 226 errx(EX_NOUSER, "no such user `%s'", name); 227 } 228 229 if (name == NULL) 230 name = pwd->pw_name; 231 232 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str) -1) == 0) 233 locked = true; 234 if (mode == M_LOCK && locked) 235 errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name); 236 if (mode == M_UNLOCK && !locked) 237 errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name); 238 239 if (mode == M_LOCK) { 240 asprintf(&passtmp, "%s%s", locked_str, pwd->pw_passwd); 241 if (passtmp == NULL) /* disaster */ 242 errx(EX_UNAVAILABLE, "out of memory"); 243 pwd->pw_passwd = passtmp; 244 } else { 245 pwd->pw_passwd += sizeof(locked_str)-1; 246 } 247 248 perform_chgpwent(name, pwd, NULL); 249 free(passtmp); 250 251 return (EXIT_SUCCESS); 252} 253 254static uid_t 255pw_uidpolicy(struct userconf * cnf, intmax_t id) 256{ 257 struct passwd *pwd; 258 struct bitmap bm; 259 uid_t uid = (uid_t) - 1; 260 261 /* 262 * Check the given uid, if any 263 */ 264 if (id >= 0) { 265 uid = (uid_t) id; 266 267 if ((pwd = GETPWUID(uid)) != NULL && conf.checkduplicate) 268 errx(EX_DATAERR, "uid `%ju' has already been allocated", 269 (uintmax_t)pwd->pw_uid); 270 return (uid); 271 } 272 /* 273 * We need to allocate the next available uid under one of 274 * two policies a) Grab the first unused uid b) Grab the 275 * highest possible unused uid 276 */ 277 if (cnf->min_uid >= cnf->max_uid) { /* Sanity 278 * claus^H^H^H^Hheck */ 279 cnf->min_uid = 1000; 280 cnf->max_uid = 32000; 281 } 282 bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1); 283 284 /* 285 * Now, let's fill the bitmap from the password file 286 */ 287 SETPWENT(); 288 while ((pwd = GETPWENT()) != NULL) 289 if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid) 290 bm_setbit(&bm, pwd->pw_uid - cnf->min_uid); 291 ENDPWENT(); 292 293 /* 294 * Then apply the policy, with fallback to reuse if necessary 295 */ 296 if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid) 297 uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid); 298 299 /* 300 * Another sanity check 301 */ 302 if (uid < cnf->min_uid || uid > cnf->max_uid) 303 errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used"); 304 bm_dealloc(&bm); 305 return (uid); 306} 307 308static uid_t 309pw_gidpolicy(struct userconf *cnf, char *grname, char *nam, gid_t prefer, bool dryrun) 310{ 311 struct group *grp; 312 gid_t gid = (uid_t) - 1; 313 314 /* 315 * Check the given gid, if any 316 */ 317 SETGRENT(); 318 if (grname) { 319 if ((grp = GETGRNAM(grname)) == NULL) { 320 gid = pw_checkid(grname, GID_MAX); 321 grp = GETGRGID(gid); 322 } 323 gid = grp->gr_gid; 324 } else if ((grp = GETGRNAM(nam)) != NULL && 325 (grp->gr_mem == NULL || grp->gr_mem[0] == NULL)) { 326 gid = grp->gr_gid; /* Already created? Use it anyway... */ 327 } else { 328 intmax_t grid = -1; 329 330 /* 331 * We need to auto-create a group with the user's name. We 332 * can send all the appropriate output to our sister routine 333 * bit first see if we can create a group with gid==uid so we 334 * can keep the user and group ids in sync. We purposely do 335 * NOT check the gid range if we can force the sync. If the 336 * user's name dups an existing group, then the group add 337 * function will happily handle that case for us and exit. 338 */ 339 if (GETGRGID(prefer) == NULL) 340 grid = prefer; 341 if (dryrun) { 342 gid = pw_groupnext(cnf, true); 343 } else { 344 if (grid == -1) 345 grid = pw_groupnext(cnf, true); 346 groupadd(cnf, nam, grid, NULL, -1, false, false, false); 347 if ((grp = GETGRNAM(nam)) != NULL) 348 gid = grp->gr_gid; 349 } 350 } 351 ENDGRENT(); 352 return (gid); 353} 354 355static char * 356pw_homepolicy(struct userconf * cnf, char *homedir, const char *user) 357{ 358 static char home[128]; 359 360 if (homedir) 361 return (homedir); 362 363 if (cnf->home == NULL || *cnf->home == '\0') 364 errx(EX_CONFIG, "no base home directory set"); 365 snprintf(home, sizeof(home), "%s/%s", cnf->home, user); 366 367 return (home); 368} 369 370static char * 371shell_path(char const * path, char *shells[], char *sh) 372{ 373 if (sh != NULL && (*sh == '/' || *sh == '\0')) 374 return sh; /* specified full path or forced none */ 375 else { 376 char *p; 377 char paths[_UC_MAXLINE]; 378 379 /* 380 * We need to search paths 381 */ 382 strlcpy(paths, path, sizeof(paths)); 383 for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) { 384 int i; 385 static char shellpath[256]; 386 387 if (sh != NULL) { 388 snprintf(shellpath, sizeof(shellpath), "%s/%s", p, sh); 389 if (access(shellpath, X_OK) == 0) 390 return shellpath; 391 } else 392 for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) { 393 snprintf(shellpath, sizeof(shellpath), "%s/%s", p, shells[i]); 394 if (access(shellpath, X_OK) == 0) 395 return shellpath; 396 } 397 } 398 if (sh == NULL) 399 errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh); 400 errx(EX_CONFIG, "no default shell available or defined"); 401 return NULL; 402 } 403} 404 405static char * 406pw_shellpolicy(struct userconf * cnf) 407{ 408 409 return shell_path(cnf->shelldir, cnf->shells, cnf->shell_default); 410} 411 412#define SALTSIZE 32 413 414static char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./"; 415 416char * 417pw_pwcrypt(char *password) 418{ 419 int i; 420 char salt[SALTSIZE + 1]; 421 char *cryptpw; 422 static char buf[256]; 423 424 /* 425 * Calculate a salt value 426 */ 427 for (i = 0; i < SALTSIZE; i++) 428 salt[i] = chars[arc4random_uniform(sizeof(chars) - 1)]; 429 salt[SALTSIZE] = '\0'; 430 431 cryptpw = crypt(password, salt); 432 if (cryptpw == NULL) 433 errx(EX_CONFIG, "crypt(3) failure"); 434 return strcpy(buf, cryptpw); 435} 436 437static char * 438pw_password(struct userconf * cnf, char const * user, bool dryrun) 439{ 440 int i, l; 441 char pwbuf[32]; 442 443 switch (cnf->default_password) { 444 case -1: /* Random password */ 445 l = (arc4random() % 8 + 8); /* 8 - 16 chars */ 446 for (i = 0; i < l; i++) 447 pwbuf[i] = chars[arc4random_uniform(sizeof(chars)-1)]; 448 pwbuf[i] = '\0'; 449 450 /* 451 * We give this information back to the user 452 */ 453 if (conf.fd == -1 && !dryrun) { 454 if (isatty(STDOUT_FILENO)) 455 printf("Password for '%s' is: ", user); 456 printf("%s\n", pwbuf); 457 fflush(stdout); 458 } 459 break; 460 461 case -2: /* No password at all! */ 462 return ""; 463 464 case 0: /* No login - default */ 465 default: 466 return "*"; 467 468 case 1: /* user's name */ 469 strlcpy(pwbuf, user, sizeof(pwbuf)); 470 break; 471 } 472 return pw_pwcrypt(pwbuf); 473} 474 475static int 476print_user(struct passwd * pwd, bool pretty, bool v7) 477{ 478 int j; 479 char *p; 480 struct group *grp = GETGRGID(pwd->pw_gid); 481 char uname[60] = "User &", office[60] = "[None]", 482 wphone[60] = "[None]", hphone[60] = "[None]"; 483 char acexpire[32] = "[None]", pwexpire[32] = "[None]"; 484 struct tm * tptr; 485 486 if (!pretty) { 487 p = v7 ? pw_make_v7(pwd) : pw_make(pwd); 488 printf("%s\n", p); 489 free(p); 490 return (EXIT_SUCCESS); 491 } 492 493 if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { 494 strlcpy(uname, p, sizeof(uname)); 495 if ((p = strtok(NULL, ",")) != NULL) { 496 strlcpy(office, p, sizeof(office)); 497 if ((p = strtok(NULL, ",")) != NULL) { 498 strlcpy(wphone, p, sizeof(wphone)); 499 if ((p = strtok(NULL, "")) != NULL) { 500 strlcpy(hphone, p, sizeof(hphone)); 501 } 502 } 503 } 504 } 505 /* 506 * Handle '&' in gecos field 507 */ 508 if ((p = strchr(uname, '&')) != NULL) { 509 int l = strlen(pwd->pw_name); 510 int m = strlen(p); 511 512 memmove(p + l, p + 1, m); 513 memmove(p, pwd->pw_name, l); 514 *p = (char) toupper((unsigned char)*p); 515 } 516 if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL) 517 strftime(acexpire, sizeof acexpire, "%c", tptr); 518 if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL) 519 strftime(pwexpire, sizeof pwexpire, "%c", tptr); 520 printf("Login Name: %-15s #%-12ju Group: %-15s #%ju\n" 521 " Full Name: %s\n" 522 " Home: %-26.26s Class: %s\n" 523 " Shell: %-26.26s Office: %s\n" 524 "Work Phone: %-26.26s Home Phone: %s\n" 525 "Acc Expire: %-26.26s Pwd Expire: %s\n", 526 pwd->pw_name, (uintmax_t)pwd->pw_uid, 527 grp ? grp->gr_name : "(invalid)", (uintmax_t)pwd->pw_gid, 528 uname, pwd->pw_dir, pwd->pw_class, 529 pwd->pw_shell, office, wphone, hphone, 530 acexpire, pwexpire); 531 SETGRENT(); 532 j = 0; 533 while ((grp=GETGRENT()) != NULL) { 534 int i = 0; 535 if (grp->gr_mem != NULL) { 536 while (grp->gr_mem[i] != NULL) { 537 if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) { 538 printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name); 539 break; 540 } 541 ++i; 542 } 543 } 544 } 545 ENDGRENT(); 546 printf("%s", j ? "\n" : ""); 547 return (EXIT_SUCCESS); 548} 549 550char * 551pw_checkname(char *name, int gecos) 552{ 553 char showch[8]; 554 const char *badchars, *ch, *showtype; 555 int reject; 556 557 ch = name; 558 reject = 0; 559 if (gecos) { 560 /* See if the name is valid as a gecos (comment) field. */ 561 badchars = ":!@"; 562 showtype = "gecos field"; 563 } else { 564 /* See if the name is valid as a userid or group. */ 565 badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\""; 566 showtype = "userid/group name"; 567 /* Userids and groups can not have a leading '-'. */ 568 if (*ch == '-') 569 reject = 1; 570 } 571 if (!reject) { 572 while (*ch) { 573 if (strchr(badchars, *ch) != NULL || *ch < ' ' || 574 *ch == 127) { 575 reject = 1; 576 break; 577 } 578 /* 8-bit characters are only allowed in GECOS fields */ 579 if (!gecos && (*ch & 0x80)) { 580 reject = 1; 581 break; 582 } 583 ch++; 584 } 585 } 586 /* 587 * A `$' is allowed as the final character for userids and groups, 588 * mainly for the benefit of samba. 589 */ 590 if (reject && !gecos) { 591 if (*ch == '$' && *(ch + 1) == '\0') { 592 reject = 0; 593 ch++; 594 } 595 } 596 if (reject) { 597 snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127) 598 ? "`%c'" : "0x%02x", *ch); 599 errx(EX_DATAERR, "invalid character %s at position %td in %s", 600 showch, (ch - name), showtype); 601 } 602 if (!gecos && (ch - name) > LOGNAMESIZE) 603 errx(EX_USAGE, "name too long `%s' (max is %d)", name, 604 LOGNAMESIZE); 605 606 return (name); 607} 608 609static void 610rmat(uid_t uid) 611{ 612 DIR *d = opendir("/var/at/jobs"); 613 614 if (d != NULL) { 615 struct dirent *e; 616 617 while ((e = readdir(d)) != NULL) { 618 struct stat st; 619 620 if (strncmp(e->d_name, ".lock", 5) != 0 && 621 stat(e->d_name, &st) == 0 && 622 !S_ISDIR(st.st_mode) && 623 st.st_uid == uid) { 624 char tmp[MAXPATHLEN]; 625 626 snprintf(tmp, sizeof(tmp), "/usr/bin/atrm %s", 627 e->d_name); 628 system(tmp); 629 } 630 } 631 closedir(d); 632 } 633} 634 635static void 636rmopie(char const * name) 637{ 638 char tmp[1014]; 639 FILE *fp; 640 int fd; 641 size_t len; 642 off_t atofs = 0; 643 644 if ((fd = openat(conf.rootfd, "etc/opiekeys", O_RDWR)) == -1) 645 return; 646 647 fp = fdopen(fd, "r+"); 648 len = strlen(name); 649 650 while (fgets(tmp, sizeof(tmp), fp) != NULL) { 651 if (strncmp(name, tmp, len) == 0 && tmp[len]==' ') { 652 /* Comment username out */ 653 if (fseek(fp, atofs, SEEK_SET) == 0) 654 fwrite("#", 1, 1, fp); 655 break; 656 } 657 atofs = ftell(fp); 658 } 659 /* 660 * If we got an error of any sort, don't update! 661 */ 662 fclose(fp); 663} 664 665int 666pw_user_next(int argc, char **argv, char *name __unused) 667{ 668 struct userconf *cnf = NULL; 669 const char *cfg = NULL; 670 int ch; 671 bool quiet = false; 672 uid_t next; 673 674 while ((ch = getopt(argc, argv, "Cq")) != -1) { 675 switch (ch) { 676 case 'C': 677 cfg = optarg; 678 break; 679 case 'q': 680 quiet; 681 break; 682 } 683 } 684 685 if (quiet) 686 freopen(_PATH_DEVNULL, "w", stderr); 687 688 cnf = get_userconfig(cfg); 689 690 next = pw_uidpolicy(cnf, -1); 691 692 printf("%ju:", (uintmax_t)next); 693 pw_groupnext(cnf, quiet); 694 695 return (EXIT_SUCCESS); 696} 697 698int 699pw_user_show(int argc, char **argv, char *arg1) 700{ 701 struct passwd *pwd = NULL; 702 char *name = NULL; 703 uid_t id = -1; 704 int ch; 705 bool all = false; 706 bool pretty = false; 707 bool force = false; 708 bool v7 = false; 709 bool quiet = false; 710 711 if (arg1 != NULL) { 712 if (strspn(arg1, "0123456789") == strlen(arg1)) 713 id = pw_checkid(arg1, UID_MAX); 714 else 715 name = arg1; 716 } 717 718 while ((ch = getopt(argc, argv, "C:qn:u:FPa7")) != -1) { 719 switch (ch) { 720 case 'C': 721 /* ignore compatibility */ 722 break; 723 case 'q': 724 quiet = true; 725 break; 726 case 'n': 727 name = optarg; 728 break; 729 case 'u': 730 id = pw_checkid(optarg, UID_MAX); 731 break; 732 case 'F': 733 force = true; 734 break; 735 case 'P': 736 pretty = true; 737 break; 738 case 'a': 739 all = true; 740 break; 741 case 7: 742 v7 = true; 743 break; 744 } 745 } 746 747 if (quiet) 748 freopen(_PATH_DEVNULL, "w", stderr); 749 750 if (all) { 751 SETPWENT(); 752 while ((pwd = GETPWENT()) != NULL) 753 print_user(pwd, pretty, v7); 754 ENDPWENT(); 755 return (EXIT_SUCCESS); 756 } 757 758 if (id < 0 && name == NULL) 759 errx(EX_DATAERR, "username or id required"); 760 761 pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id); 762 if (pwd == NULL) { 763 if (force) { 764 pwd = &fakeuser; 765 } else { 766 if (name == NULL) 767 errx(EX_NOUSER, "no such uid `%ju'", 768 (uintmax_t) id); 769 errx(EX_NOUSER, "no such user `%s'", name); 770 } 771 } 772 773 return (print_user(pwd, pretty, v7)); 774} 775 776int 777pw_user_del(int argc, char **argv, char *arg1) 778{ 779 struct userconf *cnf = NULL; 780 struct passwd *pwd = NULL; 781 struct group *gr, *grp; 782 char *name = NULL; 783 char grname[MAXLOGNAME]; 784 char *nispasswd = NULL; 785 char file[MAXPATHLEN]; 786 char home[MAXPATHLEN]; 787 const char *cfg = NULL; 788 struct stat st; 789 uid_t id; 790 int ch, rc; 791 bool nis = false; 792 bool deletehome = false; 793 bool quiet = false; 794 795 if (arg1 != NULL) { 796 if (strspn(arg1, "0123456789") == strlen(arg1)) 797 id = pw_checkid(arg1, UID_MAX); 798 else 799 name = arg1; 800 } 801 802 while ((ch = getopt(argc, argv, "C:qn:u:rYy:")) != -1) { 803 switch (ch) { 804 case 'C': 805 cfg = optarg; 806 break; 807 case 'q': 808 quiet = true; 809 break; 810 case 'n': 811 name = optarg; 812 break; 813 case 'u': 814 id = pw_checkid(optarg, UID_MAX); 815 break; 816 case 'r': 817 deletehome = true; 818 break; 819 case 'y': 820 nispasswd = optarg; 821 break; 822 case 'Y': 823 nis = true; 824 break; 825 } 826 } 827 828 if (quiet) 829 freopen(_PATH_DEVNULL, "w", stderr); 830 831 if (id < 0 && name == NULL) 832 errx(EX_DATAERR, "username or id required"); 833 834 cnf = get_userconfig(cfg); 835 836 if (nispasswd == NULL) 837 nispasswd = cnf->nispasswd; 838 839 pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id); 840 if (pwd == NULL) { 841 if (name == NULL) 842 errx(EX_NOUSER, "no such uid `%ju'", (uintmax_t) id); 843 errx(EX_NOUSER, "no such user `%s'", name); 844 } 845 846 if (PWF._altdir == PWF_REGULAR && 847 ((pwd->pw_fields & _PWF_SOURCE) != _PWF_FILES)) { 848 if ((pwd->pw_fields & _PWF_SOURCE) == _PWF_NIS) { 849 if (!nis && nispasswd && *nispasswd != '/') 850 errx(EX_NOUSER, "Cannot remove NIS user `%s'", 851 name); 852 } else { 853 errx(EX_NOUSER, "Cannot remove non local user `%s'", 854 name); 855 } 856 } 857 858 id = pwd->pw_uid; 859 if (name == NULL) 860 name = pwd->pw_name; 861 862 if (strcmp(pwd->pw_name, "root") == 0) 863 errx(EX_DATAERR, "cannot remove user 'root'"); 864 865 /* Remove opie record from /etc/opiekeys */ 866 if (PWALTDIR() != PWF_ALT) 867 rmopie(pwd->pw_name); 868 869 if (!PWALTDIR()) { 870 /* Remove crontabs */ 871 snprintf(file, sizeof(file), "/var/cron/tabs/%s", pwd->pw_name); 872 if (access(file, F_OK) == 0) { 873 snprintf(file, sizeof(file), "crontab -u %s -r", 874 pwd->pw_name); 875 system(file); 876 } 877 } 878 879 /* 880 * Save these for later, since contents of pwd may be 881 * invalidated by deletion 882 */ 883 snprintf(file, sizeof(file), "%s/%s", _PATH_MAILDIR, pwd->pw_name); 884 strlcpy(home, pwd->pw_dir, sizeof(home)); 885 gr = GETGRGID(pwd->pw_gid); 886 if (gr != NULL) 887 strlcpy(grname, gr->gr_name, LOGNAMESIZE); 888 else 889 grname[0] = '\0'; 890 891 rc = delpwent(pwd); 892 if (rc == -1) 893 err(EX_IOERR, "user '%s' does not exist", pwd->pw_name); 894 else if (rc != 0) 895 err(EX_IOERR, "passwd update"); 896 897 if (nis && nispasswd && *nispasswd=='/') { 898 rc = delnispwent(nispasswd, name); 899 if (rc == -1) 900 warnx("WARNING: user '%s' does not exist in NIS passwd", 901 pwd->pw_name); 902 else if (rc != 0) 903 warn("WARNING: NIS passwd update"); 904 } 905 906 grp = GETGRNAM(name); 907 if (grp != NULL && 908 (grp->gr_mem == NULL || *grp->gr_mem == NULL) && 909 strcmp(name, grname) == 0) 910 delgrent(GETGRNAM(name)); 911 SETGRENT(); 912 while ((grp = GETGRENT()) != NULL) { 913 int i, j; 914 char group[MAXLOGNAME]; 915 if (grp->gr_mem == NULL) 916 continue; 917 918 for (i = 0; grp->gr_mem[i] != NULL; i++) { 919 if (strcmp(grp->gr_mem[i], name) != 0) 920 continue; 921 922 for (j = i; grp->gr_mem[j] != NULL; j++) 923 grp->gr_mem[j] = grp->gr_mem[j+1]; 924 strlcpy(group, grp->gr_name, MAXLOGNAME); 925 chggrent(group, grp); 926 } 927 } 928 ENDGRENT(); 929 930 pw_log(cnf, M_DELETE, W_USER, "%s(%ju) account removed", name, 931 (uintmax_t)id); 932 933 /* Remove mail file */ 934 if (PWALTDIR() != PWF_ALT) 935 unlinkat(conf.rootfd, file + 1, 0); 936 937 /* Remove at jobs */ 938 if (!PWALTDIR() && getpwuid(id) == NULL) 939 rmat(id); 940 941 /* Remove home directory and contents */ 942 if (PWALTDIR() != PWF_ALT && deletehome && *home == '/' && 943 GETPWUID(id) == NULL && 944 fstatat(conf.rootfd, home + 1, &st, 0) != -1) { 945 rm_r(conf.rootfd, home, id); 946 pw_log(cnf, M_DELETE, W_USER, "%s(%ju) home '%s' %s" 947 "removed", name, (uintmax_t)id, home, 948 fstatat(conf.rootfd, home + 1, &st, 0) == -1 ? "" : "not " 949 "completely "); 950 } 951 952 return (EXIT_SUCCESS); 953} 954 955int 956pw_user_lock(int argc, char **argv, char *arg1) 957{ 958 int ch; 959 960 while ((ch = getopt(argc, argv, "Cq")) != -1) { 961 switch (ch) { 962 case 'C': 963 case 'q': 964 /* compatibility */ 965 break; 966 } 967 } 968 969 return (pw_userlock(arg1, M_LOCK)); 970} 971 972int 973pw_user_unlock(int argc, char **argv, char *arg1) 974{ 975 int ch; 976 977 while ((ch = getopt(argc, argv, "Cq")) != -1) { 978 switch (ch) { 979 case 'C': 980 case 'q': 981 /* compatibility */ 982 break; 983 } 984 } 985 986 return (pw_userlock(arg1, M_UNLOCK)); 987} 988 989static struct group * 990group_from_name_or_id(char *name) 991{ 992 const char *errstr = NULL; 993 struct group *grp; 994 uintmax_t id; 995 996 if ((grp = GETGRNAM(name)) == NULL) { 997 id = strtounum(name, 0, GID_MAX, &errstr); 998 if (errstr) 999 errx(EX_NOUSER, "group `%s' does not exist", name); 1000 grp = GETGRGID(id); 1001 if (grp == NULL) 1002 errx(EX_NOUSER, "group `%s' does not exist", name); 1003 } 1004 1005 return (grp); 1006} 1007 1008static void 1009split_groups(StringList **groups, char *groupsstr) 1010{ 1011 struct group *grp; 1012 char *p; 1013 char tok[] = ", \t"; 1014 1015 for (p = strtok(groupsstr, tok); p != NULL; p = strtok(NULL, tok)) { 1016 grp = group_from_name_or_id(p); 1017 if (*groups == NULL) 1018 *groups = sl_init(); 1019 sl_add(*groups, newstr(grp->gr_name)); 1020 } 1021} 1022 1023static void 1024validate_grname(struct userconf *cnf, char *group) 1025{ 1026 struct group *grp; 1027 1028 if (group == NULL || *group == '\0') { 1029 cnf->default_group = ""; 1030 return; 1031 } 1032 grp = group_from_name_or_id(group); 1033 cnf->default_group = newstr(grp->gr_name); 1034} 1035 1036static mode_t 1037validate_mode(char *mode) 1038{ 1039 mode_t m; 1040 void *set; 1041 1042 if ((set = setmode(mode)) == NULL) 1043 errx(EX_DATAERR, "invalid directory creation mode '%s'", mode); 1044 1045 m = getmode(set, _DEF_DIRMODE); 1046 free(set); 1047 return (m); 1048} 1049 1050static void 1051mix_config(struct userconf *cmdcnf, struct userconf *cfg) 1052{ 1053 1054 if (cmdcnf->default_password == 0) 1055 cmdcnf->default_password = cfg->default_password; 1056 if (cmdcnf->reuse_uids == 0) 1057 cmdcnf->reuse_uids = cfg->reuse_uids; 1058 if (cmdcnf->reuse_gids == 0) 1059 cmdcnf->reuse_gids = cfg->reuse_gids; 1060 if (cmdcnf->nispasswd == NULL) 1061 cmdcnf->nispasswd = cfg->nispasswd; 1062 if (cmdcnf->dotdir == NULL) 1063 cmdcnf->dotdir = cfg->dotdir; 1064 if (cmdcnf->newmail == NULL) 1065 cmdcnf->newmail = cfg->newmail; 1066 if (cmdcnf->logfile == NULL) 1067 cmdcnf->logfile = cfg->logfile; 1068 if (cmdcnf->home == NULL) 1069 cmdcnf->home = cfg->home; 1070 if (cmdcnf->homemode == 0) 1071 cmdcnf->homemode = cfg->homemode; 1072 if (cmdcnf->shelldir == NULL) 1073 cmdcnf->shelldir = cfg->shelldir; 1074 if (cmdcnf->shells == NULL) 1075 cmdcnf->shells = cfg->shells; 1076 if (cmdcnf->shell_default == NULL) 1077 cmdcnf->shell_default = cfg->shell_default; 1078 if (cmdcnf->default_group == NULL) 1079 cmdcnf->default_group = cfg->default_group; 1080 if (cmdcnf->groups == NULL) 1081 cmdcnf->groups = cfg->groups; 1082 if (cmdcnf->default_class == NULL) 1083 cmdcnf->default_class = cfg->default_class; 1084 if (cmdcnf->min_uid == 0) 1085 cmdcnf->min_uid = cfg->min_uid; 1086 if (cmdcnf->max_uid == 0) 1087 cmdcnf->max_uid = cfg->max_uid; 1088 if (cmdcnf->min_gid == 0) 1089 cmdcnf->min_gid = cfg->min_gid; 1090 if (cmdcnf->max_gid == 0) 1091 cmdcnf->max_gid = cfg->max_gid; 1092 if (cmdcnf->expire_days == 0) 1093 cmdcnf->expire_days = cfg->expire_days; 1094 if (cmdcnf->password_days == 0) 1095 cmdcnf->password_days = cfg->password_days; 1096} 1097 1098int 1099pw_user_add(int argc, char **argv, char *arg1) 1100{ 1101 struct userconf *cnf, *cmdcnf; 1102 struct passwd *pwd; 1103 struct group *grp; 1104 struct stat st; 1105 char args[] = "C:qn:u:c:d:e:p:g:G:mM:k:s:oL:i:w:h:H:Db:NPy:Y"; 1106 char line[_PASSWORD_LEN+1], path[MAXPATHLEN]; 1107 char *gecos, *homedir, *skel, *walk, *userid, *groupid, *grname; 1108 char *default_passwd, *name, *p; 1109 const char *cfg; 1110 login_cap_t *lc; 1111 FILE *pfp, *fp; 1112 intmax_t id = -1; 1113 time_t now; 1114 int rc, ch, fd = -1; 1115 size_t i; 1116 bool dryrun, nis, pretty, quiet, createhome, precrypted, genconf; 1117 1118 dryrun = nis = pretty = quiet = createhome = precrypted = false; 1119 genconf = false; 1120 gecos = homedir = skel = userid = groupid = default_passwd = NULL; 1121 grname = name = NULL; 1122 1123 if ((cmdcnf = calloc(1, sizeof(struct userconf))) == NULL) 1124 err(EXIT_FAILURE, "calloc()"); 1125 1126 if (arg1 != NULL) { 1127 if (strspn(arg1, "0123456789") == strlen(arg1)) 1128 id = pw_checkid(arg1, UID_MAX); 1129 else 1130 name = arg1; 1131 } 1132 1133 while ((ch = getopt(argc, argv, args)) != -1) { 1134 switch (ch) { 1135 case 'C': 1136 cfg = optarg; 1137 break; 1138 case 'q': 1139 quiet = true; 1140 break; 1141 case 'n': 1142 name = optarg; 1143 break; 1144 case 'u': 1145 userid = optarg; 1146 break; 1147 case 'c': 1148 gecos = pw_checkname(optarg, 1); 1149 break; 1150 case 'd': 1151 homedir = optarg; 1152 break; 1153 case 'e': 1154 now = time(NULL); 1155 cmdcnf->expire_days = parse_date(now, optarg); 1156 break; 1157 case 'p': 1158 now = time(NULL); 1159 cmdcnf->password_days = parse_date(now, optarg); 1160 break; 1161 case 'g': 1162 validate_grname(cmdcnf, optarg); 1163 grname = optarg; 1164 break; 1165 case 'G': 1166 split_groups(&cmdcnf->groups, optarg); 1167 break; 1168 case 'm': 1169 createhome = true; 1170 break; 1171 case 'M': 1172 cmdcnf->homemode = validate_mode(optarg); 1173 break; 1174 case 'k': 1175 walk = skel = optarg; 1176 if (*walk == '/') 1177 walk++; 1178 if (fstatat(conf.rootfd, walk, &st, 0) == -1) 1179 errx(EX_OSFILE, "skeleton `%s' does not " 1180 "exists", skel); 1181 if (!S_ISDIR(st.st_mode)) 1182 errx(EX_OSFILE, "skeleton `%s' is not a " 1183 "directory", skel); 1184 cmdcnf->dotdir = skel; 1185 break; 1186 case 's': 1187 cmdcnf->shell_default = optarg; 1188 break; 1189 case 'o': 1190 conf.checkduplicate = false; 1191 break; 1192 case 'L': 1193 cmdcnf->default_class = pw_checkname(optarg, 0); 1194 break; 1195 case 'i': 1196 groupid = optarg; 1197 break; 1198 case 'w': 1199 default_passwd = optarg; 1200 break; 1201 case 'H': 1202 if (fd != -1) 1203 errx(EX_USAGE, "'-h' and '-H' are mutually " 1204 "exclusive options"); 1205 fd = pw_checkfd(optarg); 1206 precrypted = true; 1207 if (fd == '-') 1208 errx(EX_USAGE, "-H expects a file descriptor"); 1209 break; 1210 case 'h': 1211 if (fd != -1) 1212 errx(EX_USAGE, "'-h' and '-H' are mutually " 1213 "exclusive options"); 1214 fd = pw_checkfd(optarg); 1215 break; 1216 case 'D': 1217 genconf = true; 1218 break; 1219 case 'b': 1220 cmdcnf->home = optarg; 1221 break; 1222 case 'N': 1223 dryrun = true; 1224 break; 1225 case 'P': 1226 pretty = true; 1227 break; 1228 case 'y': 1229 cmdcnf->nispasswd = optarg; 1230 break; 1231 case 'Y': 1232 nis = true; 1233 break; 1234 } 1235 } 1236 1237 if (geteuid() != 0 && ! dryrun) 1238 errx(EX_NOPERM, "you must be root"); 1239 1240 if (quiet) 1241 freopen(_PATH_DEVNULL, "w", stderr); 1242 1243 cnf = get_userconfig(cfg); 1244 1245 mix_config(cmdcnf, cnf); 1246 if (default_passwd) 1247 cmdcnf->default_password = boolean_val(default_passwd, 1248 cnf->default_password); 1249 if (genconf) { 1250 if (name != NULL) 1251 errx(EX_DATAERR, "can't combine `-D' with `-n name'"); 1252 if (userid != NULL) { 1253 if ((p = strtok(userid, ", \t")) != NULL) 1254 cmdcnf->min_uid = pw_checkid(p, UID_MAX); 1255 if (cmdcnf->min_uid == 0) 1256 cmdcnf->min_uid = 1000; 1257 if ((p = strtok(NULL, " ,\t")) != NULL) 1258 cmdcnf->max_uid = pw_checkid(p, UID_MAX); 1259 if (cmdcnf->max_uid == 0) 1260 cmdcnf->max_uid = 32000; 1261 } 1262 if (groupid != NULL) { 1263 if ((p = strtok(groupid, ", \t")) != NULL) 1264 cmdcnf->min_gid = pw_checkid(p, GID_MAX); 1265 if (cmdcnf->min_gid == 0) 1266 cmdcnf->min_gid = 1000; 1267 if ((p = strtok(NULL, " ,\t")) != NULL) 1268 cmdcnf->max_gid = pw_checkid(p, GID_MAX); 1269 if (cmdcnf->max_gid == 0) 1270 cmdcnf->max_gid = 32000; 1271 } 1272 if (write_userconfig(cmdcnf, cfg)) 1273 return (EXIT_SUCCESS); 1274 err(EX_IOERR, "config update"); 1275 } 1276 1277 if (userid) 1278 id = pw_checkid(userid, UID_MAX); 1279 if (id < 0 && name == NULL) 1280 errx(EX_DATAERR, "user name or id required"); 1281 1282 if (name == NULL) 1283 errx(EX_DATAERR, "login name required"); 1284 1285 if (GETPWNAM(name) != NULL) 1286 errx(EX_DATAERR, "login name `%s' already exists", name); 1287 1288 pwd = &fakeuser; 1289 pwd->pw_name = name; 1290 pwd->pw_class = cmdcnf->default_class ? cmdcnf->default_class : ""; 1291 pwd->pw_uid = pw_uidpolicy(cmdcnf, id); 1292 pwd->pw_gid = pw_gidpolicy(cnf, grname, pwd->pw_name, 1293 (gid_t) pwd->pw_uid, dryrun); 1294 pwd->pw_change = cmdcnf->password_days; 1295 pwd->pw_expire = cmdcnf->expire_days; 1296 pwd->pw_dir = pw_homepolicy(cmdcnf, homedir, pwd->pw_name); 1297 pwd->pw_shell = pw_shellpolicy(cmdcnf); 1298 lc = login_getpwclass(pwd); 1299 if (lc == NULL || login_setcryptfmt(lc, "sha512", NULL) == NULL) 1300 warn("setting crypt(3) format"); 1301 login_close(lc); 1302 pwd->pw_passwd = pw_password(cmdcnf, pwd->pw_name, dryrun); 1303 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 1304 warnx("WARNING: new account `%s' has a uid of 0 " 1305 "(superuser access!)", pwd->pw_name); 1306 if (gecos) 1307 pwd->pw_gecos = gecos; 1308 1309 if (fd != -1) 1310 pw_set_passwd(pwd, fd, precrypted, false); 1311 1312 if (dryrun) 1313 return (print_user(pwd, pretty, false)); 1314 1315 if ((rc = addpwent(pwd)) != 0) { 1316 if (rc == -1) 1317 errx(EX_IOERR, "user '%s' already exists", 1318 pwd->pw_name); 1319 else if (rc != 0) 1320 err(EX_IOERR, "passwd file update"); 1321 } 1322 if (nis && cmdcnf->nispasswd && *cmdcnf->nispasswd == '/') { 1323 printf("%s\n", cmdcnf->nispasswd); 1324 rc = addnispwent(cmdcnf->nispasswd, pwd); 1325 if (rc == -1) 1326 warnx("User '%s' already exists in NIS passwd", 1327 pwd->pw_name); 1328 else if (rc != 0) 1329 warn("NIS passwd update"); 1330 /* NOTE: we treat NIS-only update errors as non-fatal */ 1331 } 1332 1333 if (cmdcnf->groups != NULL) { 1334 for (i = 0; i < cmdcnf->groups->sl_cur; i++) { 1335 grp = GETGRNAM(cmdcnf->groups->sl_str[i]); 1336 grp = gr_add(grp, pwd->pw_name); 1337 /* 1338 * grp can only be NULL in 2 cases: 1339 * - the new member is already a member 1340 * - a problem with memory occurs 1341 * in both cases we want to skip now. 1342 */ 1343 if (grp == NULL) 1344 continue; 1345 chggrent(grp->gr_name, grp); 1346 free(grp); 1347 } 1348 } 1349 1350 pwd = GETPWNAM(name); 1351 if (pwd == NULL) 1352 errx(EX_NOUSER, "user '%s' disappeared during update", name); 1353 1354 grp = GETGRGID(pwd->pw_gid); 1355 pw_log(cnf, M_ADD, W_USER, "%s(%ju):%s(%ju):%s:%s:%s", 1356 pwd->pw_name, (uintmax_t)pwd->pw_uid, 1357 grp ? grp->gr_name : "unknown", 1358 (uintmax_t)(grp ? grp->gr_gid : (uid_t)-1), 1359 pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 1360 1361 /* 1362 * let's touch and chown the user's mail file. This is not 1363 * strictly necessary under BSD with a 0755 maildir but it also 1364 * doesn't hurt anything to create the empty mailfile 1365 */ 1366 if (PWALTDIR() != PWF_ALT) { 1367 snprintf(path, sizeof(path), "%s/%s", _PATH_MAILDIR, 1368 pwd->pw_name); 1369 /* Preserve contents & mtime */ 1370 close(openat(conf.rootfd, path +1, O_RDWR | O_CREAT, 0600)); 1371 fchownat(conf.rootfd, path + 1, pwd->pw_uid, pwd->pw_gid, 1372 AT_SYMLINK_NOFOLLOW); 1373 } 1374 1375 /* 1376 * Let's create and populate the user's home directory. Note 1377 * that this also `works' for editing users if -m is used, but 1378 * existing files will *not* be overwritten. 1379 */ 1380 if (PWALTDIR() != PWF_ALT && createhome && pwd->pw_dir && 1381 *pwd->pw_dir == '/' && pwd->pw_dir[1]) 1382 create_and_populate_homedir(cmdcnf, pwd, cmdcnf->dotdir, 1383 cmdcnf->homemode, false); 1384 1385 if (!PWALTDIR() && cmdcnf->newmail && *cmdcnf->newmail && 1386 (fp = fopen(cnf->newmail, "r")) != NULL) { 1387 if ((pfp = popen(_PATH_SENDMAIL " -t", "w")) == NULL) 1388 warn("sendmail"); 1389 else { 1390 fprintf(pfp, "From: root\n" "To: %s\n" 1391 "Subject: Welcome!\n\n", pwd->pw_name); 1392 while (fgets(line, sizeof(line), fp) != NULL) { 1393 /* Do substitutions? */ 1394 fputs(line, pfp); 1395 } 1396 pclose(pfp); 1397 pw_log(cnf, M_ADD, W_USER, "%s(%ju) new user mail sent", 1398 pwd->pw_name, (uintmax_t)pwd->pw_uid); 1399 } 1400 fclose(fp); 1401 } 1402 1403 if (nis && nis_update() == 0) 1404 pw_log(cnf, M_ADD, W_USER, "NIS maps updated"); 1405 1406 return (EXIT_SUCCESS); 1407} 1408 1409int 1410pw_user_mod(int argc, char **argv, char *arg1) 1411{ 1412 struct userconf *cnf; 1413 struct passwd *pwd; 1414 struct group *grp; 1415 StringList *groups = NULL; 1416 char args[] = "C:qn:u:c:d:e:p:g:G:mM:l:k:s:w:L:h:H:NPYy:"; 1417 const char *cfg; 1418 char *gecos, *homedir, *grname, *name, *newname, *walk, *skel, *shell; 1419 char *passwd, *class, *nispasswd; 1420 login_cap_t *lc; 1421 struct stat st; 1422 intmax_t id = -1; 1423 int ch, fd = -1; 1424 size_t i, j; 1425 bool quiet, createhome, pretty, dryrun, nis, edited, docreatehome; 1426 mode_t homemode = 0; 1427 time_t expire_days, password_days, now, precrypted; 1428 1429 expire_days = password_days = -1; 1430 gecos = homedir = grname = name = newname = skel = shell =NULL; 1431 passwd = NULL; 1432 class = nispasswd = NULL; 1433 quiet = createhome = pretty = dryrun = nis = precrypted = false; 1434 edited = docreatehome = false; 1435 1436 if (arg1 != NULL) { 1437 if (strspn(arg1, "0123456789") == strlen(arg1)) 1438 id = pw_checkid(arg1, UID_MAX); 1439 else 1440 name = arg1; 1441 } 1442 1443 while ((ch = getopt(argc, argv, args)) != -1) { 1444 switch (ch) { 1445 case 'C': 1446 cfg = optarg; 1447 break; 1448 case 'q': 1449 quiet = true; 1450 break; 1451 case 'n': 1452 name = optarg; 1453 break; 1454 case 'u': 1455 id = pw_checkid(optarg, UID_MAX); 1456 break; 1457 case 'c': 1458 gecos = pw_checkname(optarg, 1); 1459 break; 1460 case 'd': 1461 homedir = optarg; 1462 break; 1463 case 'e': 1464 now = time(NULL); 1465 expire_days = parse_date(now, optarg); 1466 break; 1467 case 'p': 1468 now = time(NULL); 1469 password_days = parse_date(now, optarg); 1470 break; 1471 case 'g': 1472 group_from_name_or_id(optarg); 1473 grname = optarg; 1474 break; 1475 case 'G': 1476 split_groups(&groups, optarg); 1477 break; 1478 case 'm': 1479 createhome = true; 1480 break; 1481 case 'M': 1482 homemode = validate_mode(optarg); 1483 break; 1484 case 'l': 1485 newname = optarg; 1486 break; 1487 case 'k': 1488 walk = skel = optarg; 1489 if (*walk == '/') 1490 walk++; 1491 if (fstatat(conf.rootfd, walk, &st, 0) == -1) 1492 errx(EX_OSFILE, "skeleton `%s' does not " 1493 "exists", skel); 1494 if (!S_ISDIR(st.st_mode)) 1495 errx(EX_OSFILE, "skeleton `%s' is not a " 1496 "directory", skel); 1497 break; 1498 case 's': 1499 shell = optarg; 1500 break; 1501 case 'w': 1502 passwd = optarg; 1503 break; 1504 case 'L': 1505 class = pw_checkname(optarg, 0); 1506 break; 1507 case 'H': 1508 if (fd != -1) 1509 errx(EX_USAGE, "'-h' and '-H' are mutually " 1510 "exclusive options"); 1511 fd = pw_checkfd(optarg); 1512 precrypted = true; 1513 if (fd == '-') 1514 errx(EX_USAGE, "-H expects a file descriptor"); 1515 break; 1516 case 'h': 1517 if (fd != -1) 1518 errx(EX_USAGE, "'-h' and '-H' are mutually " 1519 "exclusive options"); 1520 fd = pw_checkfd(optarg); 1521 break; 1522 case 'N': 1523 dryrun = true; 1524 break; 1525 case 'P': 1526 pretty = true; 1527 break; 1528 case 'y': 1529 nispasswd = optarg; 1530 break; 1531 case 'Y': 1532 nis = true; 1533 break; 1534 } 1535 } 1536 1537 if (geteuid() != 0 && ! dryrun) 1538 errx(EX_NOPERM, "you must be root"); 1539 1540 if (quiet) 1541 freopen(_PATH_DEVNULL, "w", stderr); 1542 1543 cnf = get_userconfig(cfg); 1544 1545 if (id < 0 && name == NULL) 1546 errx(EX_DATAERR, "username or id required"); 1547 1548 pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id); 1549 if (pwd == NULL) { 1550 if (name == NULL) 1551 errx(EX_NOUSER, "no such uid `%ju'", 1552 (uintmax_t) id); 1553 errx(EX_NOUSER, "no such user `%s'", name); 1554 } 1555 1556 if (name == NULL) 1557 name = pwd->pw_name; 1558 1559 if (nis && nispasswd == NULL) 1560 nispasswd = cnf->nispasswd; 1561 1562 if (PWF._altdir == PWF_REGULAR && 1563 ((pwd->pw_fields & _PWF_SOURCE) != _PWF_FILES)) { 1564 if ((pwd->pw_fields & _PWF_SOURCE) == _PWF_NIS) { 1565 if (!nis && nispasswd && *nispasswd != '/') 1566 errx(EX_NOUSER, "Cannot modify NIS user `%s'", 1567 name); 1568 } else { 1569 errx(EX_NOUSER, "Cannot modify non local user `%s'", 1570 name); 1571 } 1572 } 1573 1574 if (newname) { 1575 if (strcmp(pwd->pw_name, "root") == 0) 1576 errx(EX_DATAERR, "can't rename `root' account"); 1577 if (strcmp(pwd->pw_name, newname) != 0) { 1578 pwd->pw_name = pw_checkname(newname, 0); 1579 edited = true; 1580 } 1581 } 1582 1583 if (id > 0 && pwd->pw_uid != id) { 1584 pwd->pw_uid = id; 1585 edited = true; 1586 if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) 1587 errx(EX_DATAERR, "can't change uid of `root' account"); 1588 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 1589 warnx("WARNING: account `%s' will have a uid of 0 " 1590 "(superuser access!)", pwd->pw_name); 1591 } 1592 1593 if (grname && pwd->pw_uid != 0) { 1594 grp = GETGRNAM(grname); 1595 if (grp == NULL) 1596 grp = GETGRGID(pw_checkid(grname, GID_MAX)); 1597 if (grp->gr_gid != pwd->pw_gid) { 1598 pwd->pw_gid = grp->gr_gid; 1599 edited = true; 1600 } 1601 } 1602 1603 if (password_days >= 0 && pwd->pw_change != password_days) { 1604 pwd->pw_change = password_days; 1605 edited = true; 1606 } 1607 1608 if (expire_days >= 0 && pwd->pw_expire != expire_days) { 1609 pwd->pw_expire = expire_days; 1610 edited = true; 1611 } 1612 1613 if (shell) { 1614 shell = shell_path(cnf->shelldir, cnf->shells, shell); 1615 if (shell == NULL) 1616 shell = ""; 1617 if (strcmp(shell, pwd->pw_shell) != 0) { 1618 pwd->pw_shell = shell; 1619 edited = true; 1620 } 1621 } 1622 1623 if (class && strcmp(pwd->pw_class, class) != 0) { 1624 pwd->pw_class = class; 1625 edited = true; 1626 } 1627 1628 if (homedir && strcmp(pwd->pw_dir, homedir) != 0) { 1629 pwd->pw_dir = homedir; 1630 if (fstatat(conf.rootfd, pwd->pw_dir, &st, 0) == -1) { 1631 if (!createhome) 1632 warnx("WARNING: home `%s' does not exist", 1633 pwd->pw_dir); 1634 else 1635 docreatehome = true; 1636 } else if (!S_ISDIR(st.st_mode)) { 1637 warnx("WARNING: home `%s' is not a directory", 1638 pwd->pw_dir); 1639 } 1640 } 1641 1642 if (passwd && conf.fd == -1) { 1643 lc = login_getpwclass(pwd); 1644 if (lc == NULL || login_setcryptfmt(lc, "sha512", NULL) == NULL) 1645 warn("setting crypt(3) format"); 1646 login_close(lc); 1647 pwd->pw_passwd = pw_password(cnf, pwd->pw_name, dryrun); 1648 edited = true; 1649 } 1650 1651 if (gecos && strcmp(pwd->pw_gecos, gecos) != 0) { 1652 pwd->pw_gecos = gecos; 1653 edited = true; 1654 } 1655 1656 if (fd != -1) 1657 edited = pw_set_passwd(pwd, fd, precrypted, true); 1658 1659 if (dryrun) 1660 return (print_user(pwd, pretty, false)); 1661 1662 if (edited) /* Only updated this if required */ 1663 perform_chgpwent(name, pwd, nis ? nispasswd : NULL); 1664 /* Now perform the needed changes concern groups */ 1665 if (groups != NULL) { 1666 /* Delete User from groups using old name */ 1667 SETGRENT(); 1668 while ((grp = GETGRENT()) != NULL) { 1669 if (grp->gr_mem == NULL) 1670 continue; 1671 for (i = 0; grp->gr_mem[i] != NULL; i++) { 1672 if (strcmp(grp->gr_mem[i] , name) != 0) 1673 continue; 1674 for (j = i; grp->gr_mem[j] != NULL ; j++) 1675 grp->gr_mem[j] = grp->gr_mem[j+1]; 1676 chggrent(grp->gr_name, grp); 1677 break; 1678 } 1679 } 1680 ENDGRENT(); 1681 /* Add the user to the needed groups */ 1682 for (i = 0; i < groups->sl_cur; i++) { 1683 grp = GETGRNAM(groups->sl_str[i]); 1684 grp = gr_add(grp, pwd->pw_name); 1685 if (grp == NULL) 1686 continue; 1687 chggrent(grp->gr_name, grp); 1688 free(grp); 1689 } 1690 } 1691 /* In case of rename we need to walk over the different groups */ 1692 if (newname) { 1693 SETGRENT(); 1694 while ((grp = GETGRENT()) != NULL) { 1695 if (grp->gr_mem == NULL) 1696 continue; 1697 for (i = 0; grp->gr_mem[i] != NULL; i++) { 1698 if (strcmp(grp->gr_mem[i], name) != 0) 1699 continue; 1700 grp->gr_mem[i] = newname; 1701 chggrent(grp->gr_name, grp); 1702 break; 1703 } 1704 } 1705 } 1706 1707 /* go get a current version of pwd */ 1708 if (newname) 1709 name = newname; 1710 pwd = GETPWNAM(name); 1711 if (pwd == NULL) 1712 errx(EX_NOUSER, "user '%s' disappeared during update", name); 1713 grp = GETGRGID(pwd->pw_gid); 1714 pw_log(cnf, M_UPDATE, W_USER, "%s(%ju):%s(%ju):%s:%s:%s", 1715 pwd->pw_name, (uintmax_t)pwd->pw_uid, 1716 grp ? grp->gr_name : "unknown", 1717 (uintmax_t)(grp ? grp->gr_gid : (uid_t)-1), 1718 pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 1719 1720 /* 1721 * Let's create and populate the user's home directory. Note 1722 * that this also `works' for editing users if -m is used, but 1723 * existing files will *not* be overwritten. 1724 */ 1725 if (PWALTDIR() != PWF_ALT && docreatehome && pwd->pw_dir && 1726 *pwd->pw_dir == '/' && pwd->pw_dir[1]) { 1727 if (!skel) 1728 skel = cnf->dotdir; 1729 if (homemode == 0) 1730 homemode = cnf->homemode; 1731 create_and_populate_homedir(cnf, pwd, skel, homemode, true); 1732 } 1733 1734 if (nis && nis_update() == 0) 1735 pw_log(cnf, M_UPDATE, W_USER, "NIS maps updated"); 1736 1737 return (EXIT_SUCCESS); 1738} 1739