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: releng/10.3/usr.sbin/pw/pw_user.c 293684 2016-01-11 19:26:18Z 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 <errno.h> 42#include <fcntl.h> 43#include <grp.h> 44#include <pwd.h> 45#include <libutil.h> 46#include <login_cap.h> 47#include <paths.h> 48#include <string.h> 49#include <sysexits.h> 50#include <termios.h> 51#include <unistd.h> 52 53#include "pw.h" 54#include "bitmap.h" 55#include "psdate.h" 56 57#define LOGNAMESIZE (MAXLOGNAME-1) 58 59static char locked_str[] = "*LOCKED*"; 60 61static struct passwd fakeuser = { 62 "nouser", 63 "*", 64 -1, 65 -1, 66 0, 67 "", 68 "User &", 69 "/nonexistent", 70 "/bin/sh", 71 0, 72 0 73}; 74 75static int print_user(struct passwd *pwd, bool pretty, bool v7); 76static uid_t pw_uidpolicy(struct userconf *cnf, intmax_t id); 77static uid_t pw_gidpolicy(struct userconf *cnf, char *grname, char *nam, 78 gid_t prefer, bool dryrun); 79static char *pw_homepolicy(struct userconf * cnf, char *homedir, 80 const char *user); 81static char *pw_shellpolicy(struct userconf * cnf); 82static char *pw_password(struct userconf * cnf, char const * user, 83 bool dryrun); 84static char *shell_path(char const * path, char *shells[], char *sh); 85static void rmat(uid_t uid); 86static void rmopie(char const * name); 87 88static void 89mkdir_home_parents(int dfd, const char *dir) 90{ 91 struct stat st; 92 char *dirs, *tmp; 93 94 if (*dir != '/') 95 errx(EX_DATAERR, "invalid base directory for home '%s'", dir); 96 97 dir++; 98 99 if (fstatat(dfd, dir, &st, 0) != -1) { 100 if (S_ISDIR(st.st_mode)) 101 return; 102 errx(EX_OSFILE, "root home `/%s' is not a directory", dir); 103 } 104 105 dirs = strdup(dir); 106 if (dirs == NULL) 107 errx(EX_UNAVAILABLE, "out of memory"); 108 109 tmp = strrchr(dirs, '/'); 110 if (tmp == NULL) { 111 free(dirs); 112 return; 113 } 114 tmp[0] = '\0'; 115 116 /* 117 * This is a kludge especially for Joerg :) 118 * If the home directory would be created in the root partition, then 119 * we really create it under /usr which is likely to have more space. 120 * But we create a symlink from cnf->home -> "/usr" -> cnf->home 121 */ 122 if (strchr(dirs, '/') == NULL) { 123 asprintf(&tmp, "usr/%s", dirs); 124 if (tmp == NULL) 125 errx(EX_UNAVAILABLE, "out of memory"); 126 if (mkdirat(dfd, tmp, _DEF_DIRMODE) != -1 || errno == EEXIST) { 127 fchownat(dfd, tmp, 0, 0, 0); 128 symlinkat(tmp, dfd, dirs); 129 } 130 free(tmp); 131 } 132 tmp = dirs; 133 if (fstatat(dfd, dirs, &st, 0) == -1) { 134 while ((tmp = strchr(tmp + 1, '/')) != NULL) { 135 *tmp = '\0'; 136 if (fstatat(dfd, dirs, &st, 0) == -1) { 137 if (mkdirat(dfd, dirs, _DEF_DIRMODE) == -1) 138 err(EX_OSFILE, "'%s' (root home parent) is not a directory", dirs); 139 } 140 *tmp = '/'; 141 } 142 } 143 if (fstatat(dfd, dirs, &st, 0) == -1) { 144 if (mkdirat(dfd, dirs, _DEF_DIRMODE) == -1) 145 err(EX_OSFILE, "'%s' (root home parent) is not a directory", dirs); 146 fchownat(dfd, dirs, 0, 0, 0); 147 } 148 149 free(dirs); 150} 151 152static void 153create_and_populate_homedir(struct userconf *cnf, struct passwd *pwd, 154 const char *skeldir, mode_t homemode, bool update) 155{ 156 int skelfd = -1; 157 158 /* Create home parents directories */ 159 mkdir_home_parents(conf.rootfd, pwd->pw_dir); 160 161 if (skeldir != NULL && *skeldir != '\0') { 162 if (*skeldir == '/') 163 skeldir++; 164 skelfd = openat(conf.rootfd, skeldir, O_DIRECTORY|O_CLOEXEC); 165 } 166 167 copymkdir(conf.rootfd, pwd->pw_dir, skelfd, homemode, pwd->pw_uid, 168 pwd->pw_gid, 0); 169 pw_log(cnf, update ? M_UPDATE : M_ADD, W_USER, "%s(%ju) home %s made", 170 pwd->pw_name, (uintmax_t)pwd->pw_uid, pwd->pw_dir); 171} 172 173static int 174pw_set_passwd(struct passwd *pwd, int fd, bool precrypted, bool update) 175{ 176 int b, istty; 177 struct termios t, n; 178 login_cap_t *lc; 179 char line[_PASSWORD_LEN+1]; 180 char *p; 181 182 if (fd == '-') { 183 if (!pwd->pw_passwd || *pwd->pw_passwd != '*') { 184 pwd->pw_passwd = "*"; /* No access */ 185 return (1); 186 } 187 return (0); 188 } 189 190 if ((istty = isatty(fd))) { 191 if (tcgetattr(fd, &t) == -1) 192 istty = 0; 193 else { 194 n = t; 195 n.c_lflag &= ~(ECHO); 196 tcsetattr(fd, TCSANOW, &n); 197 printf("%s%spassword for user %s:", 198 update ? "new " : "", 199 precrypted ? "encrypted " : "", 200 pwd->pw_name); 201 fflush(stdout); 202 } 203 } 204 b = read(fd, line, sizeof(line) - 1); 205 if (istty) { /* Restore state */ 206 tcsetattr(fd, TCSANOW, &t); 207 fputc('\n', stdout); 208 fflush(stdout); 209 } 210 211 if (b < 0) 212 err(EX_IOERR, "-%c file descriptor", 213 precrypted ? 'H' : 'h'); 214 line[b] = '\0'; 215 if ((p = strpbrk(line, "\r\n")) != NULL) 216 *p = '\0'; 217 if (!*line) 218 errx(EX_DATAERR, "empty password read on file descriptor %d", 219 fd); 220 if (precrypted) { 221 if (strchr(line, ':') != NULL) 222 errx(EX_DATAERR, "bad encrypted password"); 223 pwd->pw_passwd = strdup(line); 224 } else { 225 lc = login_getpwclass(pwd); 226 if (lc == NULL || 227 login_setcryptfmt(lc, "sha512", NULL) == NULL) 228 warn("setting crypt(3) format"); 229 login_close(lc); 230 pwd->pw_passwd = pw_pwcrypt(line); 231 } 232 return (1); 233} 234 235static void 236perform_chgpwent(const char *name, struct passwd *pwd, char *nispasswd) 237{ 238 int rc; 239 struct passwd *nispwd; 240 241 /* duplicate for nis so that chgpwent is not modifying before NIS */ 242 if (nispasswd && *nispasswd == '/') 243 nispwd = pw_dup(pwd); 244 245 rc = chgpwent(name, pwd); 246 if (rc == -1) 247 errx(EX_IOERR, "user '%s' does not exist (NIS?)", pwd->pw_name); 248 else if (rc != 0) 249 err(EX_IOERR, "passwd file update"); 250 251 if (nispasswd && *nispasswd == '/') { 252 rc = chgnispwent(nispasswd, name, nispwd); 253 if (rc == -1) 254 warn("User '%s' not found in NIS passwd", pwd->pw_name); 255 else if (rc != 0) 256 warn("NIS passwd update"); 257 /* NOTE: NIS-only update errors are not fatal */ 258 } 259} 260 261/* 262 * The M_LOCK and M_UNLOCK functions simply add or remove 263 * a "*LOCKED*" prefix from in front of the password to 264 * prevent it decoding correctly, and therefore prevents 265 * access. Of course, this only prevents access via 266 * password authentication (not ssh, kerberos or any 267 * other method that does not use the UNIX password) but 268 * that is a known limitation. 269 */ 270static int 271pw_userlock(char *arg1, int mode) 272{ 273 struct passwd *pwd = NULL; 274 char *passtmp = NULL; 275 char *name; 276 bool locked = false; 277 uid_t id = (uid_t)-1; 278 279 if (geteuid() != 0) 280 errx(EX_NOPERM, "you must be root"); 281 282 if (arg1 == NULL) 283 errx(EX_DATAERR, "username or id required"); 284 285 name = arg1; 286 if (arg1[strspn(name, "0123456789")] == '\0') 287 id = pw_checkid(name, UID_MAX); 288 289 pwd = GETPWNAM(pw_checkname(name, 0)); 290 if (pwd == NULL && id != (uid_t)-1) { 291 pwd = GETPWUID(id); 292 if (pwd != NULL) 293 name = pwd->pw_name; 294 } 295 if (pwd == NULL) { 296 if (id == (uid_t)-1) 297 errx(EX_NOUSER, "no such name or uid `%ju'", (uintmax_t) id); 298 errx(EX_NOUSER, "no such user `%s'", name); 299 } 300 301 if (name == NULL) 302 name = pwd->pw_name; 303 304 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str) -1) == 0) 305 locked = true; 306 if (mode == M_LOCK && locked) 307 errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name); 308 if (mode == M_UNLOCK && !locked) 309 errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name); 310 311 if (mode == M_LOCK) { 312 asprintf(&passtmp, "%s%s", locked_str, pwd->pw_passwd); 313 if (passtmp == NULL) /* disaster */ 314 errx(EX_UNAVAILABLE, "out of memory"); 315 pwd->pw_passwd = passtmp; 316 } else { 317 pwd->pw_passwd += sizeof(locked_str)-1; 318 } 319 320 perform_chgpwent(name, pwd, NULL); 321 free(passtmp); 322 323 return (EXIT_SUCCESS); 324} 325 326static uid_t 327pw_uidpolicy(struct userconf * cnf, intmax_t id) 328{ 329 struct passwd *pwd; 330 struct bitmap bm; 331 uid_t uid = (uid_t) - 1; 332 333 /* 334 * Check the given uid, if any 335 */ 336 if (id >= 0) { 337 uid = (uid_t) id; 338 339 if ((pwd = GETPWUID(uid)) != NULL && conf.checkduplicate) 340 errx(EX_DATAERR, "uid `%ju' has already been allocated", 341 (uintmax_t)pwd->pw_uid); 342 return (uid); 343 } 344 /* 345 * We need to allocate the next available uid under one of 346 * two policies a) Grab the first unused uid b) Grab the 347 * highest possible unused uid 348 */ 349 if (cnf->min_uid >= cnf->max_uid) { /* Sanity 350 * claus^H^H^H^Hheck */ 351 cnf->min_uid = 1000; 352 cnf->max_uid = 32000; 353 } 354 bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1); 355 356 /* 357 * Now, let's fill the bitmap from the password file 358 */ 359 SETPWENT(); 360 while ((pwd = GETPWENT()) != NULL) 361 if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid) 362 bm_setbit(&bm, pwd->pw_uid - cnf->min_uid); 363 ENDPWENT(); 364 365 /* 366 * Then apply the policy, with fallback to reuse if necessary 367 */ 368 if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid) 369 uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid); 370 371 /* 372 * Another sanity check 373 */ 374 if (uid < cnf->min_uid || uid > cnf->max_uid) 375 errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used"); 376 bm_dealloc(&bm); 377 return (uid); 378} 379 380static uid_t 381pw_gidpolicy(struct userconf *cnf, char *grname, char *nam, gid_t prefer, bool dryrun) 382{ 383 struct group *grp; 384 gid_t gid = (uid_t) - 1; 385 386 /* 387 * Check the given gid, if any 388 */ 389 SETGRENT(); 390 if (grname) { 391 if ((grp = GETGRNAM(grname)) == NULL) { 392 gid = pw_checkid(grname, GID_MAX); 393 grp = GETGRGID(gid); 394 } 395 gid = grp->gr_gid; 396 } else if ((grp = GETGRNAM(nam)) != NULL && 397 (grp->gr_mem == NULL || grp->gr_mem[0] == NULL)) { 398 gid = grp->gr_gid; /* Already created? Use it anyway... */ 399 } else { 400 intmax_t grid = -1; 401 402 /* 403 * We need to auto-create a group with the user's name. We 404 * can send all the appropriate output to our sister routine 405 * bit first see if we can create a group with gid==uid so we 406 * can keep the user and group ids in sync. We purposely do 407 * NOT check the gid range if we can force the sync. If the 408 * user's name dups an existing group, then the group add 409 * function will happily handle that case for us and exit. 410 */ 411 if (GETGRGID(prefer) == NULL) 412 grid = prefer; 413 if (dryrun) { 414 gid = pw_groupnext(cnf, true); 415 } else { 416 if (grid == -1) 417 grid = pw_groupnext(cnf, true); 418 groupadd(cnf, nam, grid, NULL, -1, false, false, false); 419 if ((grp = GETGRNAM(nam)) != NULL) 420 gid = grp->gr_gid; 421 } 422 } 423 ENDGRENT(); 424 return (gid); 425} 426 427static char * 428pw_homepolicy(struct userconf * cnf, char *homedir, const char *user) 429{ 430 static char home[128]; 431 432 if (homedir) 433 return (homedir); 434 435 if (cnf->home == NULL || *cnf->home == '\0') 436 errx(EX_CONFIG, "no base home directory set"); 437 snprintf(home, sizeof(home), "%s/%s", cnf->home, user); 438 439 return (home); 440} 441 442static char * 443shell_path(char const * path, char *shells[], char *sh) 444{ 445 if (sh != NULL && (*sh == '/' || *sh == '\0')) 446 return sh; /* specified full path or forced none */ 447 else { 448 char *p; 449 char paths[_UC_MAXLINE]; 450 451 /* 452 * We need to search paths 453 */ 454 strlcpy(paths, path, sizeof(paths)); 455 for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) { 456 int i; 457 static char shellpath[256]; 458 459 if (sh != NULL) { 460 snprintf(shellpath, sizeof(shellpath), "%s/%s", p, sh); 461 if (access(shellpath, X_OK) == 0) 462 return shellpath; 463 } else 464 for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) { 465 snprintf(shellpath, sizeof(shellpath), "%s/%s", p, shells[i]); 466 if (access(shellpath, X_OK) == 0) 467 return shellpath; 468 } 469 } 470 if (sh == NULL) 471 errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh); 472 errx(EX_CONFIG, "no default shell available or defined"); 473 return NULL; 474 } 475} 476 477static char * 478pw_shellpolicy(struct userconf * cnf) 479{ 480 481 return shell_path(cnf->shelldir, cnf->shells, cnf->shell_default); 482} 483 484#define SALTSIZE 32 485 486static char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./"; 487 488char * 489pw_pwcrypt(char *password) 490{ 491 int i; 492 char salt[SALTSIZE + 1]; 493 char *cryptpw; 494 static char buf[256]; 495 496 /* 497 * Calculate a salt value 498 */ 499 for (i = 0; i < SALTSIZE; i++) 500 salt[i] = chars[arc4random_uniform(sizeof(chars) - 1)]; 501 salt[SALTSIZE] = '\0'; 502 503 cryptpw = crypt(password, salt); 504 if (cryptpw == NULL) 505 errx(EX_CONFIG, "crypt(3) failure"); 506 return strcpy(buf, cryptpw); 507} 508 509static char * 510pw_password(struct userconf * cnf, char const * user, bool dryrun) 511{ 512 int i, l; 513 char pwbuf[32]; 514 515 switch (cnf->default_password) { 516 case -1: /* Random password */ 517 l = (arc4random() % 8 + 8); /* 8 - 16 chars */ 518 for (i = 0; i < l; i++) 519 pwbuf[i] = chars[arc4random_uniform(sizeof(chars)-1)]; 520 pwbuf[i] = '\0'; 521 522 /* 523 * We give this information back to the user 524 */ 525 if (conf.fd == -1 && !dryrun) { 526 if (isatty(STDOUT_FILENO)) 527 printf("Password for '%s' is: ", user); 528 printf("%s\n", pwbuf); 529 fflush(stdout); 530 } 531 break; 532 533 case -2: /* No password at all! */ 534 return ""; 535 536 case 0: /* No login - default */ 537 default: 538 return "*"; 539 540 case 1: /* user's name */ 541 strlcpy(pwbuf, user, sizeof(pwbuf)); 542 break; 543 } 544 return pw_pwcrypt(pwbuf); 545} 546 547static int 548print_user(struct passwd * pwd, bool pretty, bool v7) 549{ 550 int j; 551 char *p; 552 struct group *grp = GETGRGID(pwd->pw_gid); 553 char uname[60] = "User &", office[60] = "[None]", 554 wphone[60] = "[None]", hphone[60] = "[None]"; 555 char acexpire[32] = "[None]", pwexpire[32] = "[None]"; 556 struct tm * tptr; 557 558 if (!pretty) { 559 p = v7 ? pw_make_v7(pwd) : pw_make(pwd); 560 printf("%s\n", p); 561 free(p); 562 return (EXIT_SUCCESS); 563 } 564 565 if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { 566 strlcpy(uname, p, sizeof(uname)); 567 if ((p = strtok(NULL, ",")) != NULL) { 568 strlcpy(office, p, sizeof(office)); 569 if ((p = strtok(NULL, ",")) != NULL) { 570 strlcpy(wphone, p, sizeof(wphone)); 571 if ((p = strtok(NULL, "")) != NULL) { 572 strlcpy(hphone, p, sizeof(hphone)); 573 } 574 } 575 } 576 } 577 /* 578 * Handle '&' in gecos field 579 */ 580 if ((p = strchr(uname, '&')) != NULL) { 581 int l = strlen(pwd->pw_name); 582 int m = strlen(p); 583 584 memmove(p + l, p + 1, m); 585 memmove(p, pwd->pw_name, l); 586 *p = (char) toupper((unsigned char)*p); 587 } 588 if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL) 589 strftime(acexpire, sizeof acexpire, "%c", tptr); 590 if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL) 591 strftime(pwexpire, sizeof pwexpire, "%c", tptr); 592 printf("Login Name: %-15s #%-12ju Group: %-15s #%ju\n" 593 " Full Name: %s\n" 594 " Home: %-26.26s Class: %s\n" 595 " Shell: %-26.26s Office: %s\n" 596 "Work Phone: %-26.26s Home Phone: %s\n" 597 "Acc Expire: %-26.26s Pwd Expire: %s\n", 598 pwd->pw_name, (uintmax_t)pwd->pw_uid, 599 grp ? grp->gr_name : "(invalid)", (uintmax_t)pwd->pw_gid, 600 uname, pwd->pw_dir, pwd->pw_class, 601 pwd->pw_shell, office, wphone, hphone, 602 acexpire, pwexpire); 603 SETGRENT(); 604 j = 0; 605 while ((grp=GETGRENT()) != NULL) { 606 int i = 0; 607 if (grp->gr_mem != NULL) { 608 while (grp->gr_mem[i] != NULL) { 609 if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) { 610 printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name); 611 break; 612 } 613 ++i; 614 } 615 } 616 } 617 ENDGRENT(); 618 printf("%s", j ? "\n" : ""); 619 return (EXIT_SUCCESS); 620} 621 622char * 623pw_checkname(char *name, int gecos) 624{ 625 char showch[8]; 626 const char *badchars, *ch, *showtype; 627 int reject; 628 629 ch = name; 630 reject = 0; 631 if (gecos) { 632 /* See if the name is valid as a gecos (comment) field. */ 633 badchars = ":!@"; 634 showtype = "gecos field"; 635 } else { 636 /* See if the name is valid as a userid or group. */ 637 badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\""; 638 showtype = "userid/group name"; 639 /* Userids and groups can not have a leading '-'. */ 640 if (*ch == '-') 641 reject = 1; 642 } 643 if (!reject) { 644 while (*ch) { 645 if (strchr(badchars, *ch) != NULL || 646 (!gecos && *ch < ' ') || 647 *ch == 127) { 648 reject = 1; 649 break; 650 } 651 /* 8-bit characters are only allowed in GECOS fields */ 652 if (!gecos && (*ch & 0x80)) { 653 reject = 1; 654 break; 655 } 656 ch++; 657 } 658 } 659 /* 660 * A `$' is allowed as the final character for userids and groups, 661 * mainly for the benefit of samba. 662 */ 663 if (reject && !gecos) { 664 if (*ch == '$' && *(ch + 1) == '\0') { 665 reject = 0; 666 ch++; 667 } 668 } 669 if (reject) { 670 snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127) 671 ? "`%c'" : "0x%02x", *ch); 672 errx(EX_DATAERR, "invalid character %s at position %td in %s", 673 showch, (ch - name), showtype); 674 } 675 if (!gecos && (ch - name) > LOGNAMESIZE) 676 errx(EX_USAGE, "name too long `%s' (max is %d)", name, 677 LOGNAMESIZE); 678 679 return (name); 680} 681 682static void 683rmat(uid_t uid) 684{ 685 DIR *d = opendir("/var/at/jobs"); 686 687 if (d != NULL) { 688 struct dirent *e; 689 690 while ((e = readdir(d)) != NULL) { 691 struct stat st; 692 693 if (strncmp(e->d_name, ".lock", 5) != 0 && 694 stat(e->d_name, &st) == 0 && 695 !S_ISDIR(st.st_mode) && 696 st.st_uid == uid) { 697 char tmp[MAXPATHLEN]; 698 699 snprintf(tmp, sizeof(tmp), "/usr/bin/atrm %s", 700 e->d_name); 701 system(tmp); 702 } 703 } 704 closedir(d); 705 } 706} 707 708static void 709rmopie(char const * name) 710{ 711 char tmp[1014]; 712 FILE *fp; 713 int fd; 714 size_t len; 715 off_t atofs = 0; 716 717 if ((fd = openat(conf.rootfd, "etc/opiekeys", O_RDWR)) == -1) 718 return; 719 720 fp = fdopen(fd, "r+"); 721 len = strlen(name); 722 723 while (fgets(tmp, sizeof(tmp), fp) != NULL) { 724 if (strncmp(name, tmp, len) == 0 && tmp[len]==' ') { 725 /* Comment username out */ 726 if (fseek(fp, atofs, SEEK_SET) == 0) 727 fwrite("#", 1, 1, fp); 728 break; 729 } 730 atofs = ftell(fp); 731 } 732 /* 733 * If we got an error of any sort, don't update! 734 */ 735 fclose(fp); 736} 737 738int 739pw_user_next(int argc, char **argv, char *name __unused) 740{ 741 struct userconf *cnf = NULL; 742 const char *cfg = NULL; 743 int ch; 744 bool quiet = false; 745 uid_t next; 746 747 while ((ch = getopt(argc, argv, "Cq")) != -1) { 748 switch (ch) { 749 case 'C': 750 cfg = optarg; 751 break; 752 case 'q': 753 quiet = true; 754 break; 755 } 756 } 757 758 if (quiet) 759 freopen(_PATH_DEVNULL, "w", stderr); 760 761 cnf = get_userconfig(cfg); 762 763 next = pw_uidpolicy(cnf, -1); 764 765 printf("%ju:", (uintmax_t)next); 766 pw_groupnext(cnf, quiet); 767 768 return (EXIT_SUCCESS); 769} 770 771int 772pw_user_show(int argc, char **argv, char *arg1) 773{ 774 struct passwd *pwd = NULL; 775 char *name = NULL; 776 intmax_t id = -1; 777 int ch; 778 bool all = false; 779 bool pretty = false; 780 bool force = false; 781 bool v7 = false; 782 bool quiet = false; 783 784 if (arg1 != NULL) { 785 if (arg1[strspn(arg1, "0123456789")] == '\0') 786 id = pw_checkid(arg1, UID_MAX); 787 else 788 name = arg1; 789 } 790 791 while ((ch = getopt(argc, argv, "C:qn:u:FPa7")) != -1) { 792 switch (ch) { 793 case 'C': 794 /* ignore compatibility */ 795 break; 796 case 'q': 797 quiet = true; 798 break; 799 case 'n': 800 name = optarg; 801 break; 802 case 'u': 803 id = pw_checkid(optarg, UID_MAX); 804 break; 805 case 'F': 806 force = true; 807 break; 808 case 'P': 809 pretty = true; 810 break; 811 case 'a': 812 all = true; 813 break; 814 case '7': 815 v7 = true; 816 break; 817 } 818 } 819 820 if (quiet) 821 freopen(_PATH_DEVNULL, "w", stderr); 822 823 if (all) { 824 SETPWENT(); 825 while ((pwd = GETPWENT()) != NULL) 826 print_user(pwd, pretty, v7); 827 ENDPWENT(); 828 return (EXIT_SUCCESS); 829 } 830 831 if (id < 0 && name == NULL) 832 errx(EX_DATAERR, "username or id required"); 833 834 pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id); 835 if (pwd == NULL) { 836 if (force) { 837 pwd = &fakeuser; 838 } else { 839 if (name == NULL) 840 errx(EX_NOUSER, "no such uid `%ju'", 841 (uintmax_t) id); 842 errx(EX_NOUSER, "no such user `%s'", name); 843 } 844 } 845 846 return (print_user(pwd, pretty, v7)); 847} 848 849int 850pw_user_del(int argc, char **argv, char *arg1) 851{ 852 struct userconf *cnf = NULL; 853 struct passwd *pwd = NULL; 854 struct group *gr, *grp; 855 char *name = NULL; 856 char grname[MAXLOGNAME]; 857 char *nispasswd = NULL; 858 char file[MAXPATHLEN]; 859 char home[MAXPATHLEN]; 860 const char *cfg = NULL; 861 struct stat st; 862 intmax_t id = -1; 863 int ch, rc; 864 bool nis = false; 865 bool deletehome = false; 866 bool quiet = false; 867 868 if (arg1 != NULL) { 869 if (arg1[strspn(arg1, "0123456789")] == '\0') 870 id = pw_checkid(arg1, UID_MAX); 871 else 872 name = arg1; 873 } 874 875 while ((ch = getopt(argc, argv, "C:qn:u:rYy:")) != -1) { 876 switch (ch) { 877 case 'C': 878 cfg = optarg; 879 break; 880 case 'q': 881 quiet = true; 882 break; 883 case 'n': 884 name = optarg; 885 break; 886 case 'u': 887 id = pw_checkid(optarg, UID_MAX); 888 break; 889 case 'r': 890 deletehome = true; 891 break; 892 case 'y': 893 nispasswd = optarg; 894 break; 895 case 'Y': 896 nis = true; 897 break; 898 } 899 } 900 901 if (quiet) 902 freopen(_PATH_DEVNULL, "w", stderr); 903 904 if (id < 0 && name == NULL) 905 errx(EX_DATAERR, "username or id required"); 906 907 cnf = get_userconfig(cfg); 908 909 if (nispasswd == NULL) 910 nispasswd = cnf->nispasswd; 911 912 pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id); 913 if (pwd == NULL) { 914 if (name == NULL) 915 errx(EX_NOUSER, "no such uid `%ju'", (uintmax_t) id); 916 errx(EX_NOUSER, "no such user `%s'", name); 917 } 918 919 if (PWF._altdir == PWF_REGULAR && 920 ((pwd->pw_fields & _PWF_SOURCE) != _PWF_FILES)) { 921 if ((pwd->pw_fields & _PWF_SOURCE) == _PWF_NIS) { 922 if (!nis && nispasswd && *nispasswd != '/') 923 errx(EX_NOUSER, "Cannot remove NIS user `%s'", 924 name); 925 } else { 926 errx(EX_NOUSER, "Cannot remove non local user `%s'", 927 name); 928 } 929 } 930 931 id = pwd->pw_uid; 932 if (name == NULL) 933 name = pwd->pw_name; 934 935 if (strcmp(pwd->pw_name, "root") == 0) 936 errx(EX_DATAERR, "cannot remove user 'root'"); 937 938 /* Remove opie record from /etc/opiekeys */ 939 if (PWALTDIR() != PWF_ALT) 940 rmopie(pwd->pw_name); 941 942 if (!PWALTDIR()) { 943 /* Remove crontabs */ 944 snprintf(file, sizeof(file), "/var/cron/tabs/%s", pwd->pw_name); 945 if (access(file, F_OK) == 0) { 946 snprintf(file, sizeof(file), "crontab -u %s -r", 947 pwd->pw_name); 948 system(file); 949 } 950 } 951 952 /* 953 * Save these for later, since contents of pwd may be 954 * invalidated by deletion 955 */ 956 snprintf(file, sizeof(file), "%s/%s", _PATH_MAILDIR, pwd->pw_name); 957 strlcpy(home, pwd->pw_dir, sizeof(home)); 958 gr = GETGRGID(pwd->pw_gid); 959 if (gr != NULL) 960 strlcpy(grname, gr->gr_name, LOGNAMESIZE); 961 else 962 grname[0] = '\0'; 963 964 rc = delpwent(pwd); 965 if (rc == -1) 966 err(EX_IOERR, "user '%s' does not exist", pwd->pw_name); 967 else if (rc != 0) 968 err(EX_IOERR, "passwd update"); 969 970 if (nis && nispasswd && *nispasswd=='/') { 971 rc = delnispwent(nispasswd, name); 972 if (rc == -1) 973 warnx("WARNING: user '%s' does not exist in NIS passwd", 974 pwd->pw_name); 975 else if (rc != 0) 976 warn("WARNING: NIS passwd update"); 977 } 978 979 grp = GETGRNAM(name); 980 if (grp != NULL && 981 (grp->gr_mem == NULL || *grp->gr_mem == NULL) && 982 strcmp(name, grname) == 0) 983 delgrent(GETGRNAM(name)); 984 SETGRENT(); 985 while ((grp = GETGRENT()) != NULL) { 986 int i, j; 987 char group[MAXLOGNAME]; 988 if (grp->gr_mem == NULL) 989 continue; 990 991 for (i = 0; grp->gr_mem[i] != NULL; i++) { 992 if (strcmp(grp->gr_mem[i], name) != 0) 993 continue; 994 995 for (j = i; grp->gr_mem[j] != NULL; j++) 996 grp->gr_mem[j] = grp->gr_mem[j+1]; 997 strlcpy(group, grp->gr_name, MAXLOGNAME); 998 chggrent(group, grp); 999 } 1000 } 1001 ENDGRENT(); 1002 1003 pw_log(cnf, M_DELETE, W_USER, "%s(%ju) account removed", name, 1004 (uintmax_t)id); 1005 1006 /* Remove mail file */ 1007 if (PWALTDIR() != PWF_ALT) 1008 unlinkat(conf.rootfd, file + 1, 0); 1009 1010 /* Remove at jobs */ 1011 if (!PWALTDIR() && getpwuid(id) == NULL) 1012 rmat(id); 1013 1014 /* Remove home directory and contents */ 1015 if (PWALTDIR() != PWF_ALT && deletehome && *home == '/' && 1016 GETPWUID(id) == NULL && 1017 fstatat(conf.rootfd, home + 1, &st, 0) != -1) { 1018 rm_r(conf.rootfd, home, id); 1019 pw_log(cnf, M_DELETE, W_USER, "%s(%ju) home '%s' %s" 1020 "removed", name, (uintmax_t)id, home, 1021 fstatat(conf.rootfd, home + 1, &st, 0) == -1 ? "" : "not " 1022 "completely "); 1023 } 1024 1025 return (EXIT_SUCCESS); 1026} 1027 1028int 1029pw_user_lock(int argc, char **argv, char *arg1) 1030{ 1031 int ch; 1032 1033 while ((ch = getopt(argc, argv, "Cq")) != -1) { 1034 switch (ch) { 1035 case 'C': 1036 case 'q': 1037 /* compatibility */ 1038 break; 1039 } 1040 } 1041 1042 return (pw_userlock(arg1, M_LOCK)); 1043} 1044 1045int 1046pw_user_unlock(int argc, char **argv, char *arg1) 1047{ 1048 int ch; 1049 1050 while ((ch = getopt(argc, argv, "Cq")) != -1) { 1051 switch (ch) { 1052 case 'C': 1053 case 'q': 1054 /* compatibility */ 1055 break; 1056 } 1057 } 1058 1059 return (pw_userlock(arg1, M_UNLOCK)); 1060} 1061 1062static struct group * 1063group_from_name_or_id(char *name) 1064{ 1065 const char *errstr = NULL; 1066 struct group *grp; 1067 uintmax_t id; 1068 1069 if ((grp = GETGRNAM(name)) == NULL) { 1070 id = strtounum(name, 0, GID_MAX, &errstr); 1071 if (errstr) 1072 errx(EX_NOUSER, "group `%s' does not exist", name); 1073 grp = GETGRGID(id); 1074 if (grp == NULL) 1075 errx(EX_NOUSER, "group `%s' does not exist", name); 1076 } 1077 1078 return (grp); 1079} 1080 1081static void 1082split_groups(StringList **groups, char *groupsstr) 1083{ 1084 struct group *grp; 1085 char *p; 1086 char tok[] = ", \t"; 1087 1088 for (p = strtok(groupsstr, tok); p != NULL; p = strtok(NULL, tok)) { 1089 grp = group_from_name_or_id(p); 1090 if (*groups == NULL) 1091 *groups = sl_init(); 1092 sl_add(*groups, newstr(grp->gr_name)); 1093 } 1094} 1095 1096static void 1097validate_grname(struct userconf *cnf, char *group) 1098{ 1099 struct group *grp; 1100 1101 if (group == NULL || *group == '\0') { 1102 cnf->default_group = ""; 1103 return; 1104 } 1105 grp = group_from_name_or_id(group); 1106 cnf->default_group = newstr(grp->gr_name); 1107} 1108 1109static mode_t 1110validate_mode(char *mode) 1111{ 1112 mode_t m; 1113 void *set; 1114 1115 if ((set = setmode(mode)) == NULL) 1116 errx(EX_DATAERR, "invalid directory creation mode '%s'", mode); 1117 1118 m = getmode(set, _DEF_DIRMODE); 1119 free(set); 1120 return (m); 1121} 1122 1123static void 1124mix_config(struct userconf *cmdcnf, struct userconf *cfg) 1125{ 1126 1127 if (cmdcnf->default_password == 0) 1128 cmdcnf->default_password = cfg->default_password; 1129 if (cmdcnf->reuse_uids == 0) 1130 cmdcnf->reuse_uids = cfg->reuse_uids; 1131 if (cmdcnf->reuse_gids == 0) 1132 cmdcnf->reuse_gids = cfg->reuse_gids; 1133 if (cmdcnf->nispasswd == NULL) 1134 cmdcnf->nispasswd = cfg->nispasswd; 1135 if (cmdcnf->dotdir == NULL) 1136 cmdcnf->dotdir = cfg->dotdir; 1137 if (cmdcnf->newmail == NULL) 1138 cmdcnf->newmail = cfg->newmail; 1139 if (cmdcnf->logfile == NULL) 1140 cmdcnf->logfile = cfg->logfile; 1141 if (cmdcnf->home == NULL) 1142 cmdcnf->home = cfg->home; 1143 if (cmdcnf->homemode == 0) 1144 cmdcnf->homemode = cfg->homemode; 1145 if (cmdcnf->shelldir == NULL) 1146 cmdcnf->shelldir = cfg->shelldir; 1147 if (cmdcnf->shells == NULL) 1148 cmdcnf->shells = cfg->shells; 1149 if (cmdcnf->shell_default == NULL) 1150 cmdcnf->shell_default = cfg->shell_default; 1151 if (cmdcnf->default_group == NULL) 1152 cmdcnf->default_group = cfg->default_group; 1153 if (cmdcnf->groups == NULL) 1154 cmdcnf->groups = cfg->groups; 1155 if (cmdcnf->default_class == NULL) 1156 cmdcnf->default_class = cfg->default_class; 1157 if (cmdcnf->min_uid == 0) 1158 cmdcnf->min_uid = cfg->min_uid; 1159 if (cmdcnf->max_uid == 0) 1160 cmdcnf->max_uid = cfg->max_uid; 1161 if (cmdcnf->min_gid == 0) 1162 cmdcnf->min_gid = cfg->min_gid; 1163 if (cmdcnf->max_gid == 0) 1164 cmdcnf->max_gid = cfg->max_gid; 1165 if (cmdcnf->expire_days == 0) 1166 cmdcnf->expire_days = cfg->expire_days; 1167 if (cmdcnf->password_days == 0) 1168 cmdcnf->password_days = cfg->password_days; 1169} 1170 1171int 1172pw_user_add(int argc, char **argv, char *arg1) 1173{ 1174 struct userconf *cnf, *cmdcnf; 1175 struct passwd *pwd; 1176 struct group *grp; 1177 struct stat st; 1178 char args[] = "C:qn:u:c:d:e:p:g:G:mM:k:s:oL:i:w:h:H:Db:NPy:Y"; 1179 char line[_PASSWORD_LEN+1], path[MAXPATHLEN]; 1180 char *gecos, *homedir, *skel, *walk, *userid, *groupid, *grname; 1181 char *default_passwd, *name, *p; 1182 const char *cfg; 1183 login_cap_t *lc; 1184 FILE *pfp, *fp; 1185 intmax_t id = -1; 1186 time_t now; 1187 int rc, ch, fd = -1; 1188 size_t i; 1189 bool dryrun, nis, pretty, quiet, createhome, precrypted, genconf; 1190 1191 dryrun = nis = pretty = quiet = createhome = precrypted = false; 1192 genconf = false; 1193 gecos = homedir = skel = userid = groupid = default_passwd = NULL; 1194 grname = name = NULL; 1195 1196 if ((cmdcnf = calloc(1, sizeof(struct userconf))) == NULL) 1197 err(EXIT_FAILURE, "calloc()"); 1198 1199 if (arg1 != NULL) { 1200 if (arg1[strspn(arg1, "0123456789")] == '\0') 1201 id = pw_checkid(arg1, UID_MAX); 1202 else 1203 name = arg1; 1204 } 1205 1206 while ((ch = getopt(argc, argv, args)) != -1) { 1207 switch (ch) { 1208 case 'C': 1209 cfg = optarg; 1210 break; 1211 case 'q': 1212 quiet = true; 1213 break; 1214 case 'n': 1215 name = optarg; 1216 break; 1217 case 'u': 1218 userid = optarg; 1219 break; 1220 case 'c': 1221 gecos = pw_checkname(optarg, 1); 1222 break; 1223 case 'd': 1224 homedir = optarg; 1225 break; 1226 case 'e': 1227 now = time(NULL); 1228 cmdcnf->expire_days = parse_date(now, optarg); 1229 break; 1230 case 'p': 1231 now = time(NULL); 1232 cmdcnf->password_days = parse_date(now, optarg); 1233 break; 1234 case 'g': 1235 validate_grname(cmdcnf, optarg); 1236 grname = optarg; 1237 break; 1238 case 'G': 1239 split_groups(&cmdcnf->groups, optarg); 1240 break; 1241 case 'm': 1242 createhome = true; 1243 break; 1244 case 'M': 1245 cmdcnf->homemode = validate_mode(optarg); 1246 break; 1247 case 'k': 1248 walk = skel = optarg; 1249 if (*walk == '/') 1250 walk++; 1251 if (fstatat(conf.rootfd, walk, &st, 0) == -1) 1252 errx(EX_OSFILE, "skeleton `%s' does not " 1253 "exists", skel); 1254 if (!S_ISDIR(st.st_mode)) 1255 errx(EX_OSFILE, "skeleton `%s' is not a " 1256 "directory", skel); 1257 cmdcnf->dotdir = skel; 1258 break; 1259 case 's': 1260 cmdcnf->shell_default = optarg; 1261 break; 1262 case 'o': 1263 conf.checkduplicate = false; 1264 break; 1265 case 'L': 1266 cmdcnf->default_class = pw_checkname(optarg, 0); 1267 break; 1268 case 'i': 1269 groupid = optarg; 1270 break; 1271 case 'w': 1272 default_passwd = optarg; 1273 break; 1274 case 'H': 1275 if (fd != -1) 1276 errx(EX_USAGE, "'-h' and '-H' are mutually " 1277 "exclusive options"); 1278 fd = pw_checkfd(optarg); 1279 precrypted = true; 1280 if (fd == '-') 1281 errx(EX_USAGE, "-H expects a file descriptor"); 1282 break; 1283 case 'h': 1284 if (fd != -1) 1285 errx(EX_USAGE, "'-h' and '-H' are mutually " 1286 "exclusive options"); 1287 fd = pw_checkfd(optarg); 1288 break; 1289 case 'D': 1290 genconf = true; 1291 break; 1292 case 'b': 1293 cmdcnf->home = optarg; 1294 break; 1295 case 'N': 1296 dryrun = true; 1297 break; 1298 case 'P': 1299 pretty = true; 1300 break; 1301 case 'y': 1302 cmdcnf->nispasswd = optarg; 1303 break; 1304 case 'Y': 1305 nis = true; 1306 break; 1307 } 1308 } 1309 1310 if (geteuid() != 0 && ! dryrun) 1311 errx(EX_NOPERM, "you must be root"); 1312 1313 if (quiet) 1314 freopen(_PATH_DEVNULL, "w", stderr); 1315 1316 cnf = get_userconfig(cfg); 1317 1318 mix_config(cmdcnf, cnf); 1319 if (default_passwd) 1320 cmdcnf->default_password = boolean_val(default_passwd, 1321 cnf->default_password); 1322 if (genconf) { 1323 if (name != NULL) 1324 errx(EX_DATAERR, "can't combine `-D' with `-n name'"); 1325 if (userid != NULL) { 1326 if ((p = strtok(userid, ", \t")) != NULL) 1327 cmdcnf->min_uid = pw_checkid(p, UID_MAX); 1328 if (cmdcnf->min_uid == 0) 1329 cmdcnf->min_uid = 1000; 1330 if ((p = strtok(NULL, " ,\t")) != NULL) 1331 cmdcnf->max_uid = pw_checkid(p, UID_MAX); 1332 if (cmdcnf->max_uid == 0) 1333 cmdcnf->max_uid = 32000; 1334 } 1335 if (groupid != NULL) { 1336 if ((p = strtok(groupid, ", \t")) != NULL) 1337 cmdcnf->min_gid = pw_checkid(p, GID_MAX); 1338 if (cmdcnf->min_gid == 0) 1339 cmdcnf->min_gid = 1000; 1340 if ((p = strtok(NULL, " ,\t")) != NULL) 1341 cmdcnf->max_gid = pw_checkid(p, GID_MAX); 1342 if (cmdcnf->max_gid == 0) 1343 cmdcnf->max_gid = 32000; 1344 } 1345 if (write_userconfig(cmdcnf, cfg)) 1346 return (EXIT_SUCCESS); 1347 err(EX_IOERR, "config update"); 1348 } 1349 1350 if (userid) 1351 id = pw_checkid(userid, UID_MAX); 1352 if (id < 0 && name == NULL) 1353 errx(EX_DATAERR, "user name or id required"); 1354 1355 if (name == NULL) 1356 errx(EX_DATAERR, "login name required"); 1357 1358 if (GETPWNAM(name) != NULL) 1359 errx(EX_DATAERR, "login name `%s' already exists", name); 1360 1361 pwd = &fakeuser; 1362 pwd->pw_name = name; 1363 pwd->pw_class = cmdcnf->default_class ? cmdcnf->default_class : ""; 1364 pwd->pw_uid = pw_uidpolicy(cmdcnf, id); 1365 pwd->pw_gid = pw_gidpolicy(cnf, grname, pwd->pw_name, 1366 (gid_t) pwd->pw_uid, dryrun); 1367 pwd->pw_change = cmdcnf->password_days; 1368 pwd->pw_expire = cmdcnf->expire_days; 1369 pwd->pw_dir = pw_homepolicy(cmdcnf, homedir, pwd->pw_name); 1370 pwd->pw_shell = pw_shellpolicy(cmdcnf); 1371 lc = login_getpwclass(pwd); 1372 if (lc == NULL || login_setcryptfmt(lc, "sha512", NULL) == NULL) 1373 warn("setting crypt(3) format"); 1374 login_close(lc); 1375 pwd->pw_passwd = pw_password(cmdcnf, pwd->pw_name, dryrun); 1376 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 1377 warnx("WARNING: new account `%s' has a uid of 0 " 1378 "(superuser access!)", pwd->pw_name); 1379 if (gecos) 1380 pwd->pw_gecos = gecos; 1381 1382 if (fd != -1) 1383 pw_set_passwd(pwd, fd, precrypted, false); 1384 1385 if (dryrun) 1386 return (print_user(pwd, pretty, false)); 1387 1388 if ((rc = addpwent(pwd)) != 0) { 1389 if (rc == -1) 1390 errx(EX_IOERR, "user '%s' already exists", 1391 pwd->pw_name); 1392 else if (rc != 0) 1393 err(EX_IOERR, "passwd file update"); 1394 } 1395 if (nis && cmdcnf->nispasswd && *cmdcnf->nispasswd == '/') { 1396 printf("%s\n", cmdcnf->nispasswd); 1397 rc = addnispwent(cmdcnf->nispasswd, pwd); 1398 if (rc == -1) 1399 warnx("User '%s' already exists in NIS passwd", 1400 pwd->pw_name); 1401 else if (rc != 0) 1402 warn("NIS passwd update"); 1403 /* NOTE: we treat NIS-only update errors as non-fatal */ 1404 } 1405 1406 if (cmdcnf->groups != NULL) { 1407 for (i = 0; i < cmdcnf->groups->sl_cur; i++) { 1408 grp = GETGRNAM(cmdcnf->groups->sl_str[i]); 1409 grp = gr_add(grp, pwd->pw_name); 1410 /* 1411 * grp can only be NULL in 2 cases: 1412 * - the new member is already a member 1413 * - a problem with memory occurs 1414 * in both cases we want to skip now. 1415 */ 1416 if (grp == NULL) 1417 continue; 1418 chggrent(grp->gr_name, grp); 1419 free(grp); 1420 } 1421 } 1422 1423 pwd = GETPWNAM(name); 1424 if (pwd == NULL) 1425 errx(EX_NOUSER, "user '%s' disappeared during update", name); 1426 1427 grp = GETGRGID(pwd->pw_gid); 1428 pw_log(cnf, M_ADD, W_USER, "%s(%ju):%s(%ju):%s:%s:%s", 1429 pwd->pw_name, (uintmax_t)pwd->pw_uid, 1430 grp ? grp->gr_name : "unknown", 1431 (uintmax_t)(grp ? grp->gr_gid : (uid_t)-1), 1432 pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 1433 1434 /* 1435 * let's touch and chown the user's mail file. This is not 1436 * strictly necessary under BSD with a 0755 maildir but it also 1437 * doesn't hurt anything to create the empty mailfile 1438 */ 1439 if (PWALTDIR() != PWF_ALT) { 1440 snprintf(path, sizeof(path), "%s/%s", _PATH_MAILDIR, 1441 pwd->pw_name); 1442 /* Preserve contents & mtime */ 1443 close(openat(conf.rootfd, path +1, O_RDWR | O_CREAT, 0600)); 1444 fchownat(conf.rootfd, path + 1, pwd->pw_uid, pwd->pw_gid, 1445 AT_SYMLINK_NOFOLLOW); 1446 } 1447 1448 /* 1449 * Let's create and populate the user's home directory. Note 1450 * that this also `works' for editing users if -m is used, but 1451 * existing files will *not* be overwritten. 1452 */ 1453 if (PWALTDIR() != PWF_ALT && createhome && pwd->pw_dir && 1454 *pwd->pw_dir == '/' && pwd->pw_dir[1]) 1455 create_and_populate_homedir(cmdcnf, pwd, cmdcnf->dotdir, 1456 cmdcnf->homemode, false); 1457 1458 if (!PWALTDIR() && cmdcnf->newmail && *cmdcnf->newmail && 1459 (fp = fopen(cnf->newmail, "r")) != NULL) { 1460 if ((pfp = popen(_PATH_SENDMAIL " -t", "w")) == NULL) 1461 warn("sendmail"); 1462 else { 1463 fprintf(pfp, "From: root\n" "To: %s\n" 1464 "Subject: Welcome!\n\n", pwd->pw_name); 1465 while (fgets(line, sizeof(line), fp) != NULL) { 1466 /* Do substitutions? */ 1467 fputs(line, pfp); 1468 } 1469 pclose(pfp); 1470 pw_log(cnf, M_ADD, W_USER, "%s(%ju) new user mail sent", 1471 pwd->pw_name, (uintmax_t)pwd->pw_uid); 1472 } 1473 fclose(fp); 1474 } 1475 1476 if (nis && nis_update() == 0) 1477 pw_log(cnf, M_ADD, W_USER, "NIS maps updated"); 1478 1479 return (EXIT_SUCCESS); 1480} 1481 1482int 1483pw_user_mod(int argc, char **argv, char *arg1) 1484{ 1485 struct userconf *cnf; 1486 struct passwd *pwd; 1487 struct group *grp; 1488 StringList *groups = NULL; 1489 char args[] = "C:qn:u:c:d:e:p:g:G:mM:l:k:s:w:L:h:H:NPYy:"; 1490 const char *cfg; 1491 char *gecos, *homedir, *grname, *name, *newname, *walk, *skel, *shell; 1492 char *passwd, *class, *nispasswd; 1493 login_cap_t *lc; 1494 struct stat st; 1495 intmax_t id = -1; 1496 int ch, fd = -1; 1497 size_t i, j; 1498 bool quiet, createhome, pretty, dryrun, nis, edited, docreatehome; 1499 bool precrypted; 1500 mode_t homemode = 0; 1501 time_t expire_days, password_days, now; 1502 1503 expire_days = password_days = -1; 1504 gecos = homedir = grname = name = newname = skel = shell =NULL; 1505 passwd = NULL; 1506 class = nispasswd = NULL; 1507 quiet = createhome = pretty = dryrun = nis = precrypted = false; 1508 edited = docreatehome = false; 1509 1510 if (arg1 != NULL) { 1511 if (arg1[strspn(arg1, "0123456789")] == '\0') 1512 id = pw_checkid(arg1, UID_MAX); 1513 else 1514 name = arg1; 1515 } 1516 1517 while ((ch = getopt(argc, argv, args)) != -1) { 1518 switch (ch) { 1519 case 'C': 1520 cfg = optarg; 1521 break; 1522 case 'q': 1523 quiet = true; 1524 break; 1525 case 'n': 1526 name = optarg; 1527 break; 1528 case 'u': 1529 id = pw_checkid(optarg, UID_MAX); 1530 break; 1531 case 'c': 1532 gecos = pw_checkname(optarg, 1); 1533 break; 1534 case 'd': 1535 homedir = optarg; 1536 break; 1537 case 'e': 1538 now = time(NULL); 1539 expire_days = parse_date(now, optarg); 1540 break; 1541 case 'p': 1542 now = time(NULL); 1543 password_days = parse_date(now, optarg); 1544 break; 1545 case 'g': 1546 group_from_name_or_id(optarg); 1547 grname = optarg; 1548 break; 1549 case 'G': 1550 split_groups(&groups, optarg); 1551 break; 1552 case 'm': 1553 createhome = true; 1554 break; 1555 case 'M': 1556 homemode = validate_mode(optarg); 1557 break; 1558 case 'l': 1559 newname = optarg; 1560 break; 1561 case 'k': 1562 walk = skel = optarg; 1563 if (*walk == '/') 1564 walk++; 1565 if (fstatat(conf.rootfd, walk, &st, 0) == -1) 1566 errx(EX_OSFILE, "skeleton `%s' does not " 1567 "exists", skel); 1568 if (!S_ISDIR(st.st_mode)) 1569 errx(EX_OSFILE, "skeleton `%s' is not a " 1570 "directory", skel); 1571 break; 1572 case 's': 1573 shell = optarg; 1574 break; 1575 case 'w': 1576 passwd = optarg; 1577 break; 1578 case 'L': 1579 class = pw_checkname(optarg, 0); 1580 break; 1581 case 'H': 1582 if (fd != -1) 1583 errx(EX_USAGE, "'-h' and '-H' are mutually " 1584 "exclusive options"); 1585 fd = pw_checkfd(optarg); 1586 precrypted = true; 1587 if (fd == '-') 1588 errx(EX_USAGE, "-H expects a file descriptor"); 1589 break; 1590 case 'h': 1591 if (fd != -1) 1592 errx(EX_USAGE, "'-h' and '-H' are mutually " 1593 "exclusive options"); 1594 fd = pw_checkfd(optarg); 1595 break; 1596 case 'N': 1597 dryrun = true; 1598 break; 1599 case 'P': 1600 pretty = true; 1601 break; 1602 case 'y': 1603 nispasswd = optarg; 1604 break; 1605 case 'Y': 1606 nis = true; 1607 break; 1608 } 1609 } 1610 1611 if (geteuid() != 0 && ! dryrun) 1612 errx(EX_NOPERM, "you must be root"); 1613 1614 if (quiet) 1615 freopen(_PATH_DEVNULL, "w", stderr); 1616 1617 cnf = get_userconfig(cfg); 1618 1619 if (id < 0 && name == NULL) 1620 errx(EX_DATAERR, "username or id required"); 1621 1622 pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id); 1623 if (pwd == NULL) { 1624 if (name == NULL) 1625 errx(EX_NOUSER, "no such uid `%ju'", 1626 (uintmax_t) id); 1627 errx(EX_NOUSER, "no such user `%s'", name); 1628 } 1629 1630 if (name == NULL) 1631 name = pwd->pw_name; 1632 1633 if (nis && nispasswd == NULL) 1634 nispasswd = cnf->nispasswd; 1635 1636 if (PWF._altdir == PWF_REGULAR && 1637 ((pwd->pw_fields & _PWF_SOURCE) != _PWF_FILES)) { 1638 if ((pwd->pw_fields & _PWF_SOURCE) == _PWF_NIS) { 1639 if (!nis && nispasswd && *nispasswd != '/') 1640 errx(EX_NOUSER, "Cannot modify NIS user `%s'", 1641 name); 1642 } else { 1643 errx(EX_NOUSER, "Cannot modify non local user `%s'", 1644 name); 1645 } 1646 } 1647 1648 if (newname) { 1649 if (strcmp(pwd->pw_name, "root") == 0) 1650 errx(EX_DATAERR, "can't rename `root' account"); 1651 if (strcmp(pwd->pw_name, newname) != 0) { 1652 pwd->pw_name = pw_checkname(newname, 0); 1653 edited = true; 1654 } 1655 } 1656 1657 if (id > 0 && pwd->pw_uid != id) { 1658 pwd->pw_uid = id; 1659 edited = true; 1660 if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) 1661 errx(EX_DATAERR, "can't change uid of `root' account"); 1662 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 1663 warnx("WARNING: account `%s' will have a uid of 0 " 1664 "(superuser access!)", pwd->pw_name); 1665 } 1666 1667 if (grname && pwd->pw_uid != 0) { 1668 grp = GETGRNAM(grname); 1669 if (grp == NULL) 1670 grp = GETGRGID(pw_checkid(grname, GID_MAX)); 1671 if (grp->gr_gid != pwd->pw_gid) { 1672 pwd->pw_gid = grp->gr_gid; 1673 edited = true; 1674 } 1675 } 1676 1677 if (password_days >= 0 && pwd->pw_change != password_days) { 1678 pwd->pw_change = password_days; 1679 edited = true; 1680 } 1681 1682 if (expire_days >= 0 && pwd->pw_expire != expire_days) { 1683 pwd->pw_expire = expire_days; 1684 edited = true; 1685 } 1686 1687 if (shell) { 1688 shell = shell_path(cnf->shelldir, cnf->shells, shell); 1689 if (shell == NULL) 1690 shell = ""; 1691 if (strcmp(shell, pwd->pw_shell) != 0) { 1692 pwd->pw_shell = shell; 1693 edited = true; 1694 } 1695 } 1696 1697 if (class && strcmp(pwd->pw_class, class) != 0) { 1698 pwd->pw_class = class; 1699 edited = true; 1700 } 1701 1702 if (homedir && strcmp(pwd->pw_dir, homedir) != 0) { 1703 pwd->pw_dir = homedir; 1704 edited = true; 1705 if (fstatat(conf.rootfd, pwd->pw_dir, &st, 0) == -1) { 1706 if (!createhome) 1707 warnx("WARNING: home `%s' does not exist", 1708 pwd->pw_dir); 1709 else 1710 docreatehome = true; 1711 } else if (!S_ISDIR(st.st_mode)) { 1712 warnx("WARNING: home `%s' is not a directory", 1713 pwd->pw_dir); 1714 } 1715 } 1716 1717 if (passwd && conf.fd == -1) { 1718 lc = login_getpwclass(pwd); 1719 if (lc == NULL || login_setcryptfmt(lc, "sha512", NULL) == NULL) 1720 warn("setting crypt(3) format"); 1721 login_close(lc); 1722 cnf->default_password = boolean_val(passwd, 1723 cnf->default_password); 1724 pwd->pw_passwd = pw_password(cnf, pwd->pw_name, dryrun); 1725 edited = true; 1726 } 1727 1728 if (gecos && strcmp(pwd->pw_gecos, gecos) != 0) { 1729 pwd->pw_gecos = gecos; 1730 edited = true; 1731 } 1732 1733 if (fd != -1) 1734 edited = pw_set_passwd(pwd, fd, precrypted, true); 1735 1736 if (dryrun) 1737 return (print_user(pwd, pretty, false)); 1738 1739 if (edited) /* Only updated this if required */ 1740 perform_chgpwent(name, pwd, nis ? nispasswd : NULL); 1741 /* Now perform the needed changes concern groups */ 1742 if (groups != NULL) { 1743 /* Delete User from groups using old name */ 1744 SETGRENT(); 1745 while ((grp = GETGRENT()) != NULL) { 1746 if (grp->gr_mem == NULL) 1747 continue; 1748 for (i = 0; grp->gr_mem[i] != NULL; i++) { 1749 if (strcmp(grp->gr_mem[i] , name) != 0) 1750 continue; 1751 for (j = i; grp->gr_mem[j] != NULL ; j++) 1752 grp->gr_mem[j] = grp->gr_mem[j+1]; 1753 chggrent(grp->gr_name, grp); 1754 break; 1755 } 1756 } 1757 ENDGRENT(); 1758 /* Add the user to the needed groups */ 1759 for (i = 0; i < groups->sl_cur; i++) { 1760 grp = GETGRNAM(groups->sl_str[i]); 1761 grp = gr_add(grp, pwd->pw_name); 1762 if (grp == NULL) 1763 continue; 1764 chggrent(grp->gr_name, grp); 1765 free(grp); 1766 } 1767 } 1768 /* In case of rename we need to walk over the different groups */ 1769 if (newname) { 1770 SETGRENT(); 1771 while ((grp = GETGRENT()) != NULL) { 1772 if (grp->gr_mem == NULL) 1773 continue; 1774 for (i = 0; grp->gr_mem[i] != NULL; i++) { 1775 if (strcmp(grp->gr_mem[i], name) != 0) 1776 continue; 1777 grp->gr_mem[i] = newname; 1778 chggrent(grp->gr_name, grp); 1779 break; 1780 } 1781 } 1782 } 1783 1784 /* go get a current version of pwd */ 1785 if (newname) 1786 name = newname; 1787 pwd = GETPWNAM(name); 1788 if (pwd == NULL) 1789 errx(EX_NOUSER, "user '%s' disappeared during update", name); 1790 grp = GETGRGID(pwd->pw_gid); 1791 pw_log(cnf, M_UPDATE, W_USER, "%s(%ju):%s(%ju):%s:%s:%s", 1792 pwd->pw_name, (uintmax_t)pwd->pw_uid, 1793 grp ? grp->gr_name : "unknown", 1794 (uintmax_t)(grp ? grp->gr_gid : (uid_t)-1), 1795 pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 1796 1797 /* 1798 * Let's create and populate the user's home directory. Note 1799 * that this also `works' for editing users if -m is used, but 1800 * existing files will *not* be overwritten. 1801 */ 1802 if (PWALTDIR() != PWF_ALT && docreatehome && pwd->pw_dir && 1803 *pwd->pw_dir == '/' && pwd->pw_dir[1]) { 1804 if (!skel) 1805 skel = cnf->dotdir; 1806 if (homemode == 0) 1807 homemode = cnf->homemode; 1808 create_and_populate_homedir(cnf, pwd, skel, homemode, true); 1809 } 1810 1811 if (nis && nis_update() == 0) 1812 pw_log(cnf, M_UPDATE, W_USER, "NIS maps updated"); 1813 1814 return (EXIT_SUCCESS); 1815} 1816