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 29 static const char rcsid[] = 30 "$FreeBSD$"; 31 #endif /* not lint */ 32 33 #include <ctype.h> 34 #include <err.h> 35 #include <fcntl.h> 36 #include <sys/param.h> 37 #include <dirent.h> 38 #include <paths.h> 39 #include <termios.h> 40 #include <sys/types.h> 41 #include <sys/time.h> 42 #include <sys/resource.h> 43 #include <login_cap.h> 44 #include <pwd.h> 45 #include <grp.h> 46 #include <libutil.h> 47 #include "pw.h" 48 #include "bitmap.h" 49 50 #define LOGNAMESIZE (MAXLOGNAME-1) 51 52 static char locked_str[] = "*LOCKED*"; 53 54 static int pw_userdel(char *name, long id); 55 static int print_user(struct passwd * pwd); 56 static uid_t pw_uidpolicy(struct userconf * cnf, long id); 57 static uid_t pw_gidpolicy(struct cargs * args, char *nam, gid_t prefer); 58 static time_t pw_pwdpolicy(struct userconf * cnf, struct cargs * args); 59 static time_t pw_exppolicy(struct userconf * cnf, struct cargs * args); 60 static char *pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user); 61 static char *pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell); 62 static char *pw_password(struct userconf * cnf, char const * user); 63 static char *shell_path(char const * path, char *shells[], char *sh); 64 static void rmat(uid_t uid); 65 static void rmopie(char const * name); 66 67 static void 68 create_and_populate_homedir(struct passwd *pwd) 69 { 70 struct userconf *cnf = conf.userconf; 71 const char *skeldir; 72 int skelfd = -1; 73 74 skeldir = cnf->dotdir; 75 76 if (skeldir != NULL && *skeldir != '\0') { 77 if (*skeldir == '/') 78 skeldir++; 79 skelfd = openat(conf.rootfd, skeldir, O_DIRECTORY|O_CLOEXEC); 80 } 81 82 copymkdir(conf.rootfd, pwd->pw_dir, skelfd, cnf->homemode, pwd->pw_uid, 83 pwd->pw_gid, 0); 84 pw_log(cnf, M_ADD, W_USER, "%s(%u) home %s made", pwd->pw_name, 85 pwd->pw_uid, pwd->pw_dir); 86 } 87 88 static int 89 set_passwd(struct passwd *pwd, bool update) 90 { 91 int b, istty; 92 struct termios t, n; 93 login_cap_t *lc; 94 char line[_PASSWORD_LEN+1]; 95 char *p; 96 97 if (conf.fd == '-') { 98 if (!pwd->pw_passwd || *pwd->pw_passwd != '*') { 99 pwd->pw_passwd = "*"; /* No access */ 100 return (1); 101 } 102 return (0); 103 } 104 105 if ((istty = isatty(conf.fd))) { 106 if (tcgetattr(conf.fd, &t) == -1) 107 istty = 0; 108 else { 109 n = t; 110 n.c_lflag &= ~(ECHO); 111 tcsetattr(conf.fd, TCSANOW, &n); 112 printf("%s%spassword for user %s:", 113 update ? "new " : "", 114 conf.precrypted ? "encrypted " : "", 115 pwd->pw_name); 116 fflush(stdout); 117 } 118 } 119 b = read(conf.fd, line, sizeof(line) - 1); 120 if (istty) { /* Restore state */ 121 tcsetattr(conf.fd, TCSANOW, &t); 122 fputc('\n', stdout); 123 fflush(stdout); 124 } 125 126 if (b < 0) 127 err(EX_IOERR, "-%c file descriptor", 128 conf.precrypted ? 'H' : 'h'); 129 line[b] = '\0'; 130 if ((p = strpbrk(line, "\r\n")) != NULL) 131 *p = '\0'; 132 if (!*line) 133 errx(EX_DATAERR, "empty password read on file descriptor %d", 134 conf.fd); 135 if (conf.precrypted) { 136 if (strchr(line, ':') != NULL) 137 errx(EX_DATAERR, "bad encrypted password"); 138 pwd->pw_passwd = line; 139 } else { 140 lc = login_getpwclass(pwd); 141 if (lc == NULL || 142 login_setcryptfmt(lc, "sha512", NULL) == NULL) 143 warn("setting crypt(3) format"); 144 login_close(lc); 145 pwd->pw_passwd = pw_pwcrypt(line); 146 } 147 return (1); 148 } 149 150 int 151 pw_usernext(struct userconf *cnf, bool quiet) 152 { 153 uid_t next = pw_uidpolicy(cnf, -1); 154 155 if (quiet) 156 return (next); 157 158 printf("%u:", next); 159 pw_groupnext(cnf, quiet); 160 161 return (EXIT_SUCCESS); 162 } 163 164 static int 165 pw_usershow(char *name, long id, struct passwd *fakeuser) 166 { 167 struct passwd *pwd = NULL; 168 169 if (id < 0 && name == NULL && !conf.all) 170 errx(EX_DATAERR, "username or id or '-a' required"); 171 172 if (conf.all) { 173 SETPWENT(); 174 while ((pwd = GETPWENT()) != NULL) 175 print_user(pwd); 176 ENDPWENT(); 177 return (EXIT_SUCCESS); 178 } 179 180 pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id); 181 if (pwd == NULL) { 182 if (conf.force) { 183 pwd = fakeuser; 184 } else { 185 if (name == NULL) 186 errx(EX_NOUSER, "no such uid `%ld'", id); 187 errx(EX_NOUSER, "no such user `%s'", name); 188 } 189 } 190 191 return (print_user(pwd)); 192 } 193 194 static void 195 perform_chgpwent(const char *name, struct passwd *pwd) 196 { 197 int rc; 198 199 rc = chgpwent(name, pwd); 200 if (rc == -1) 201 errx(EX_IOERR, "user '%s' does not exist (NIS?)", pwd->pw_name); 202 else if (rc != 0) 203 err(EX_IOERR, "passwd file update"); 204 205 if (conf.userconf->nispasswd && *conf.userconf->nispasswd == '/') { 206 rc = chgnispwent(conf.userconf->nispasswd, name, pwd); 207 if (rc == -1) 208 warn("User '%s' not found in NIS passwd", pwd->pw_name); 209 else if (rc != 0) 210 warn("NIS passwd update"); 211 /* NOTE: NIS-only update errors are not fatal */ 212 } 213 } 214 215 /* 216 * The M_LOCK and M_UNLOCK functions simply add or remove 217 * a "*LOCKED*" prefix from in front of the password to 218 * prevent it decoding correctly, and therefore prevents 219 * access. Of course, this only prevents access via 220 * password authentication (not ssh, kerberos or any 221 * other method that does not use the UNIX password) but 222 * that is a known limitation. 223 */ 224 static int 225 pw_userlock(char *name, long id, int mode) 226 { 227 struct passwd *pwd = NULL; 228 char *passtmp = NULL; 229 bool locked = false; 230 231 if (id < 0 && name == NULL) 232 errx(EX_DATAERR, "username or id required"); 233 234 pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id); 235 if (pwd == NULL) { 236 if (name == NULL) 237 errx(EX_NOUSER, "no such uid `%ld'", id); 238 errx(EX_NOUSER, "no such user `%s'", name); 239 } 240 241 if (name == NULL) 242 name = pwd->pw_name; 243 244 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str) -1) == 0) 245 locked = true; 246 if (mode == M_LOCK && locked) 247 errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name); 248 if (mode == M_UNLOCK && !locked) 249 errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name); 250 251 if (mode == M_LOCK) { 252 asprintf(&passtmp, "%s%s", locked_str, pwd->pw_passwd); 253 if (passtmp == NULL) /* disaster */ 254 errx(EX_UNAVAILABLE, "out of memory"); 255 pwd->pw_passwd = passtmp; 256 } else { 257 pwd->pw_passwd += sizeof(locked_str)-1; 258 } 259 260 perform_chgpwent(name, pwd); 261 free(passtmp); 262 263 return (EXIT_SUCCESS); 264 } 265 266 /*- 267 * -C config configuration file 268 * -q quiet operation 269 * -n name login name 270 * -u uid user id 271 * -c comment user name/comment 272 * -d directory home directory 273 * -e date account expiry date 274 * -p date password expiry date 275 * -g grp primary group 276 * -G grp1,grp2 additional groups 277 * -m [ -k dir ] create and set up home 278 * -s shell name of login shell 279 * -o duplicate uid ok 280 * -L class user class 281 * -l name new login name 282 * -h fd password filehandle 283 * -H fd encrypted password filehandle 284 * -F force print or add 285 * Setting defaults: 286 * -D set user defaults 287 * -b dir default home root dir 288 * -e period default expiry period 289 * -p period default password change period 290 * -g group default group 291 * -G grp1,grp2.. default additional groups 292 * -L class default login class 293 * -k dir default home skeleton 294 * -s shell default shell 295 * -w method default password method 296 */ 297 298 int 299 pw_user(int mode, char *name, long id, struct cargs * args) 300 { 301 int rc, edited = 0; 302 char *p = NULL; 303 struct carg *arg; 304 struct passwd *pwd = NULL; 305 struct group *grp; 306 struct stat st; 307 struct userconf *cnf; 308 char line[_PASSWORD_LEN+1]; 309 char path[MAXPATHLEN]; 310 FILE *fp; 311 char *dmode_c; 312 void *set = NULL; 313 int valid_type = _PWF_FILES; 314 315 static struct passwd fakeuser = 316 { 317 "nouser", 318 "*", 319 -1, 320 -1, 321 0, 322 "", 323 "User &", 324 "/nonexistent", 325 "/bin/sh", 326 0 327 #if defined(__FreeBSD__) 328 ,0 329 #endif 330 }; 331 332 cnf = conf.userconf; 333 334 if (mode == M_NEXT) 335 return (pw_usernext(cnf, conf.quiet)); 336 337 if (mode == M_PRINT) 338 return (pw_usershow(name, id, &fakeuser)); 339 340 if (mode == M_DELETE) 341 return (pw_userdel(name, id)); 342 343 if (mode == M_LOCK || mode == M_UNLOCK) 344 return (pw_userlock(name, id, mode)); 345 346 /* 347 * We can do all of the common legwork here 348 */ 349 350 if ((arg = getarg(args, 'b')) != NULL) { 351 cnf->home = arg->val; 352 } 353 354 if ((arg = getarg(args, 'M')) != NULL) { 355 dmode_c = arg->val; 356 if ((set = setmode(dmode_c)) == NULL) 357 errx(EX_DATAERR, "invalid directory creation mode '%s'", 358 dmode_c); 359 cnf->homemode = getmode(set, _DEF_DIRMODE); 360 free(set); 361 } 362 363 /* 364 * If we'll need to use it or we're updating it, 365 * then create the base home directory if necessary 366 */ 367 if (arg != NULL || getarg(args, 'm') != NULL) { 368 int l = strlen(cnf->home); 369 370 if (l > 1 && cnf->home[l-1] == '/') /* Shave off any trailing path delimiter */ 371 cnf->home[--l] = '\0'; 372 373 if (l < 2 || *cnf->home != '/') /* Check for absolute path name */ 374 errx(EX_DATAERR, "invalid base directory for home '%s'", cnf->home); 375 376 if (stat(cnf->home, &st) == -1) { 377 char dbuf[MAXPATHLEN]; 378 379 /* 380 * This is a kludge especially for Joerg :) 381 * If the home directory would be created in the root partition, then 382 * we really create it under /usr which is likely to have more space. 383 * But we create a symlink from cnf->home -> "/usr" -> cnf->home 384 */ 385 if (strchr(cnf->home+1, '/') == NULL) { 386 snprintf(dbuf, MAXPATHLEN, "/usr%s", cnf->home); 387 if (mkdir(dbuf, _DEF_DIRMODE) != -1 || errno == EEXIST) { 388 chown(dbuf, 0, 0); 389 /* 390 * Skip first "/" and create symlink: 391 * /home -> usr/home 392 */ 393 symlink(dbuf+1, cnf->home); 394 } 395 /* If this falls, fall back to old method */ 396 } 397 strlcpy(dbuf, cnf->home, sizeof(dbuf)); 398 p = dbuf; 399 if (stat(dbuf, &st) == -1) { 400 while ((p = strchr(p + 1, '/')) != NULL) { 401 *p = '\0'; 402 if (stat(dbuf, &st) == -1) { 403 if (mkdir(dbuf, _DEF_DIRMODE) == -1) 404 err(EX_OSFILE, "mkdir '%s'", dbuf); 405 chown(dbuf, 0, 0); 406 } else if (!S_ISDIR(st.st_mode)) 407 errx(EX_OSFILE, "'%s' (root home parent) is not a directory", dbuf); 408 *p = '/'; 409 } 410 } 411 if (stat(dbuf, &st) == -1) { 412 if (mkdir(dbuf, _DEF_DIRMODE) == -1) 413 err(EX_OSFILE, "mkdir '%s'", dbuf); 414 chown(dbuf, 0, 0); 415 } 416 } else if (!S_ISDIR(st.st_mode)) 417 errx(EX_OSFILE, "root home `%s' is not a directory", cnf->home); 418 } 419 420 if ((arg = getarg(args, 'e')) != NULL) 421 cnf->expire_days = atoi(arg->val); 422 423 if ((arg = getarg(args, 'y')) != NULL) 424 cnf->nispasswd = arg->val; 425 426 if ((arg = getarg(args, 'p')) != NULL && arg->val) 427 cnf->password_days = atoi(arg->val); 428 429 if ((arg = getarg(args, 'g')) != NULL) { 430 if (!*(p = arg->val)) /* Handle empty group list specially */ 431 cnf->default_group = ""; 432 else { 433 if ((grp = GETGRNAM(p)) == NULL) { 434 if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 435 errx(EX_NOUSER, "group `%s' does not exist", p); 436 } 437 cnf->default_group = newstr(grp->gr_name); 438 } 439 } 440 if ((arg = getarg(args, 'L')) != NULL) 441 cnf->default_class = pw_checkname(arg->val, 0); 442 443 if ((arg = getarg(args, 'G')) != NULL && arg->val) { 444 for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) { 445 if ((grp = GETGRNAM(p)) == NULL) { 446 if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 447 errx(EX_NOUSER, "group `%s' does not exist", p); 448 } 449 sl_add(cnf->groups, newstr(grp->gr_name)); 450 } 451 } 452 453 if ((arg = getarg(args, 'k')) != NULL) { 454 char *tmp = cnf->dotdir = arg->val; 455 if (*tmp == '/') 456 tmp++; 457 if ((fstatat(conf.rootfd, tmp, &st, 0) == -1) || 458 !S_ISDIR(st.st_mode)) 459 errx(EX_OSFILE, "skeleton `%s' is not a directory or " 460 "does not exist", cnf->dotdir); 461 } 462 463 if ((arg = getarg(args, 's')) != NULL) 464 cnf->shell_default = arg->val; 465 466 if ((arg = getarg(args, 'w')) != NULL) 467 cnf->default_password = boolean_val(arg->val, cnf->default_password); 468 if (mode == M_ADD && getarg(args, 'D')) { 469 if (name != NULL) 470 errx(EX_DATAERR, "can't combine `-D' with `-n name'"); 471 if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 472 if ((cnf->min_uid = (uid_t) atoi(p)) == 0) 473 cnf->min_uid = 1000; 474 if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid) 475 cnf->max_uid = 32000; 476 } 477 if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 478 if ((cnf->min_gid = (gid_t) atoi(p)) == 0) 479 cnf->min_gid = 1000; 480 if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid) 481 cnf->max_gid = 32000; 482 } 483 484 if (write_userconfig(conf.config)) 485 return (EXIT_SUCCESS); 486 err(EX_IOERR, "config udpate"); 487 } 488 489 if (name != NULL) 490 pwd = GETPWNAM(pw_checkname(name, 0)); 491 492 if (id < 0 && name == NULL) 493 errx(EX_DATAERR, "user name or id required"); 494 495 /* 496 * Update require that the user exists 497 */ 498 if (mode == M_UPDATE) { 499 500 if (name == NULL && pwd == NULL) /* Try harder */ 501 pwd = GETPWUID(id); 502 503 if (pwd == NULL) { 504 if (name == NULL) 505 errx(EX_NOUSER, "no such uid `%ld'", id); 506 errx(EX_NOUSER, "no such user `%s'", name); 507 } 508 509 if (conf.userconf->nispasswd && *conf.userconf->nispasswd == '/') 510 valid_type = _PWF_NIS; 511 512 if (PWF._altdir == PWF_REGULAR && 513 ((pwd->pw_fields & _PWF_SOURCE) != valid_type)) 514 errx(EX_NOUSER, "no such %s user `%s'", 515 valid_type == _PWF_FILES ? "local" : "NIS" , name); 516 517 if (name == NULL) 518 name = pwd->pw_name; 519 520 /* 521 * The rest is edit code 522 */ 523 if (conf.newname != NULL) { 524 if (strcmp(pwd->pw_name, "root") == 0) 525 errx(EX_DATAERR, "can't rename `root' account"); 526 pwd->pw_name = pw_checkname(conf.newname, 0); 527 edited = 1; 528 } 529 530 if (id > 0 && isdigit((unsigned char)*arg->val)) { 531 pwd->pw_uid = (uid_t)id; 532 edited = 1; 533 if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) 534 errx(EX_DATAERR, "can't change uid of `root' account"); 535 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 536 warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name); 537 } 538 539 if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) { /* Already checked this */ 540 gid_t newgid = (gid_t) GETGRNAM(cnf->default_group)->gr_gid; 541 if (newgid != pwd->pw_gid) { 542 edited = 1; 543 pwd->pw_gid = newgid; 544 } 545 } 546 547 if ((arg = getarg(args, 'p')) != NULL) { 548 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 549 if (pwd->pw_change != 0) { 550 pwd->pw_change = 0; 551 edited = 1; 552 } 553 } 554 else { 555 time_t now = time(NULL); 556 time_t expire = parse_date(now, arg->val); 557 558 if (pwd->pw_change != expire) { 559 pwd->pw_change = expire; 560 edited = 1; 561 } 562 } 563 } 564 565 if ((arg = getarg(args, 'e')) != NULL) { 566 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 567 if (pwd->pw_expire != 0) { 568 pwd->pw_expire = 0; 569 edited = 1; 570 } 571 } 572 else { 573 time_t now = time(NULL); 574 time_t expire = parse_date(now, arg->val); 575 576 if (pwd->pw_expire != expire) { 577 pwd->pw_expire = expire; 578 edited = 1; 579 } 580 } 581 } 582 583 if ((arg = getarg(args, 's')) != NULL) { 584 char *shell = shell_path(cnf->shelldir, cnf->shells, arg->val); 585 if (shell == NULL) 586 shell = ""; 587 if (strcmp(shell, pwd->pw_shell) != 0) { 588 pwd->pw_shell = shell; 589 edited = 1; 590 } 591 } 592 593 if (getarg(args, 'L')) { 594 if (cnf->default_class == NULL) 595 cnf->default_class = ""; 596 if (strcmp(pwd->pw_class, cnf->default_class) != 0) { 597 pwd->pw_class = cnf->default_class; 598 edited = 1; 599 } 600 } 601 602 if ((arg = getarg(args, 'd')) != NULL) { 603 if (strcmp(pwd->pw_dir, arg->val)) 604 edited = 1; 605 if (stat(pwd->pw_dir = arg->val, &st) == -1) { 606 if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0) 607 warnx("WARNING: home `%s' does not exist", pwd->pw_dir); 608 } else if (!S_ISDIR(st.st_mode)) 609 warnx("WARNING: home `%s' is not a directory", pwd->pw_dir); 610 } 611 612 if ((arg = getarg(args, 'w')) != NULL && conf.fd == -1) { 613 login_cap_t *lc; 614 615 lc = login_getpwclass(pwd); 616 if (lc == NULL || 617 login_setcryptfmt(lc, "sha512", NULL) == NULL) 618 warn("setting crypt(3) format"); 619 login_close(lc); 620 pwd->pw_passwd = pw_password(cnf, pwd->pw_name); 621 edited = 1; 622 } 623 624 } else { 625 login_cap_t *lc; 626 627 /* 628 * Add code 629 */ 630 631 if (name == NULL) /* Required */ 632 errx(EX_DATAERR, "login name required"); 633 else if ((pwd = GETPWNAM(name)) != NULL) /* Exists */ 634 errx(EX_DATAERR, "login name `%s' already exists", name); 635 636 /* 637 * Now, set up defaults for a new user 638 */ 639 pwd = &fakeuser; 640 pwd->pw_name = name; 641 pwd->pw_class = cnf->default_class ? cnf->default_class : ""; 642 pwd->pw_uid = pw_uidpolicy(cnf, id); 643 pwd->pw_gid = pw_gidpolicy(args, pwd->pw_name, (gid_t) pwd->pw_uid); 644 pwd->pw_change = pw_pwdpolicy(cnf, args); 645 pwd->pw_expire = pw_exppolicy(cnf, args); 646 pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name); 647 pwd->pw_shell = pw_shellpolicy(cnf, args, NULL); 648 lc = login_getpwclass(pwd); 649 if (lc == NULL || login_setcryptfmt(lc, "sha512", NULL) == NULL) 650 warn("setting crypt(3) format"); 651 login_close(lc); 652 pwd->pw_passwd = pw_password(cnf, pwd->pw_name); 653 edited = 1; 654 655 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 656 warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name); 657 } 658 659 /* 660 * Shared add/edit code 661 */ 662 if (conf.gecos != NULL) { 663 if (strcmp(pwd->pw_gecos, conf.gecos) != 0) { 664 pwd->pw_gecos = conf.gecos; 665 edited = 1; 666 } 667 } 668 669 if (conf.fd != -1) 670 edited = set_passwd(pwd, mode == M_UPDATE); 671 672 /* 673 * Special case: -N only displays & exits 674 */ 675 if (conf.dryrun) 676 return print_user(pwd); 677 678 if (mode == M_ADD) { 679 edited = 1; /* Always */ 680 rc = addpwent(pwd); 681 if (rc == -1) 682 errx(EX_IOERR, "user '%s' already exists", 683 pwd->pw_name); 684 else if (rc != 0) 685 err(EX_IOERR, "passwd file update"); 686 if (cnf->nispasswd && *cnf->nispasswd=='/') { 687 rc = addnispwent(cnf->nispasswd, pwd); 688 if (rc == -1) 689 warnx("User '%s' already exists in NIS passwd", pwd->pw_name); 690 else if (rc != 0) 691 warn("NIS passwd update"); 692 /* NOTE: we treat NIS-only update errors as non-fatal */ 693 } 694 } else if (mode == M_UPDATE && edited) /* Only updated this if required */ 695 perform_chgpwent(name, pwd); 696 697 /* 698 * Ok, user is created or changed - now edit group file 699 */ 700 701 if (mode == M_ADD || getarg(args, 'G') != NULL) { 702 int j; 703 size_t i; 704 /* First remove the user from all group */ 705 SETGRENT(); 706 while ((grp = GETGRENT()) != NULL) { 707 char group[MAXLOGNAME]; 708 if (grp->gr_mem == NULL) 709 continue; 710 for (i = 0; grp->gr_mem[i] != NULL; i++) { 711 if (strcmp(grp->gr_mem[i] , pwd->pw_name) != 0) 712 continue; 713 for (j = i; grp->gr_mem[j] != NULL ; j++) 714 grp->gr_mem[j] = grp->gr_mem[j+1]; 715 strlcpy(group, grp->gr_name, MAXLOGNAME); 716 chggrent(group, grp); 717 } 718 } 719 ENDGRENT(); 720 721 /* now add to group where needed */ 722 for (i = 0; i < cnf->groups->sl_cur; i++) { 723 grp = GETGRNAM(cnf->groups->sl_str[i]); 724 grp = gr_add(grp, pwd->pw_name); 725 /* 726 * grp can only be NULL in 2 cases: 727 * - the new member is already a member 728 * - a problem with memory occurs 729 * in both cases we want to skip now. 730 */ 731 if (grp == NULL) 732 continue; 733 chggrent(grp->gr_name, grp); 734 free(grp); 735 } 736 } 737 738 739 /* go get a current version of pwd */ 740 pwd = GETPWNAM(name); 741 if (pwd == NULL) { 742 /* This will fail when we rename, so special case that */ 743 if (mode == M_UPDATE && conf.newname != NULL) { 744 name = conf.newname; /* update new name */ 745 pwd = GETPWNAM(name); /* refetch renamed rec */ 746 } 747 } 748 if (pwd == NULL) /* can't go on without this */ 749 errx(EX_NOUSER, "user '%s' disappeared during update", name); 750 751 grp = GETGRGID(pwd->pw_gid); 752 pw_log(cnf, mode, W_USER, "%s(%u):%s(%u):%s:%s:%s", 753 pwd->pw_name, pwd->pw_uid, 754 grp ? grp->gr_name : "unknown", (grp ? grp->gr_gid : (uid_t)-1), 755 pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 756 757 /* 758 * If adding, let's touch and chown the user's mail file. This is not 759 * strictly necessary under BSD with a 0755 maildir but it also 760 * doesn't hurt anything to create the empty mailfile 761 */ 762 if (mode == M_ADD) { 763 if (PWALTDIR() != PWF_ALT) { 764 snprintf(path, sizeof(path), "%s/%s", _PATH_MAILDIR, 765 pwd->pw_name); 766 close(openat(conf.rootfd, path +1, O_RDWR | O_CREAT, 767 0600)); /* Preserve contents & mtime */ 768 fchownat(conf.rootfd, path + 1, pwd->pw_uid, 769 pwd->pw_gid, AT_SYMLINK_NOFOLLOW); 770 } 771 } 772 773 /* 774 * Let's create and populate the user's home directory. Note 775 * that this also `works' for editing users if -m is used, but 776 * existing files will *not* be overwritten. 777 */ 778 if (PWALTDIR() != PWF_ALT && getarg(args, 'm') != NULL && pwd->pw_dir && 779 *pwd->pw_dir == '/' && pwd->pw_dir[1]) 780 create_and_populate_homedir(pwd); 781 782 /* 783 * Finally, send mail to the new user as well, if we are asked to 784 */ 785 if (mode == M_ADD && !PWALTDIR() && cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) { 786 FILE *pfp = popen(_PATH_SENDMAIL " -t", "w"); 787 788 if (pfp == NULL) 789 warn("sendmail"); 790 else { 791 fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name); 792 while (fgets(line, sizeof(line), fp) != NULL) { 793 /* Do substitutions? */ 794 fputs(line, pfp); 795 } 796 pclose(pfp); 797 pw_log(cnf, mode, W_USER, "%s(%u) new user mail sent", 798 pwd->pw_name, pwd->pw_uid); 799 } 800 fclose(fp); 801 } 802 803 return EXIT_SUCCESS; 804 } 805 806 807 static uid_t 808 pw_uidpolicy(struct userconf * cnf, long id) 809 { 810 struct passwd *pwd; 811 uid_t uid = (uid_t) - 1; 812 813 /* 814 * Check the given uid, if any 815 */ 816 if (id >= 0) { 817 uid = (uid_t) id; 818 819 if ((pwd = GETPWUID(uid)) != NULL && conf.checkduplicate) 820 errx(EX_DATAERR, "uid `%u' has already been allocated", pwd->pw_uid); 821 } else { 822 struct bitmap bm; 823 824 /* 825 * We need to allocate the next available uid under one of 826 * two policies a) Grab the first unused uid b) Grab the 827 * highest possible unused uid 828 */ 829 if (cnf->min_uid >= cnf->max_uid) { /* Sanity 830 * claus^H^H^H^Hheck */ 831 cnf->min_uid = 1000; 832 cnf->max_uid = 32000; 833 } 834 bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1); 835 836 /* 837 * Now, let's fill the bitmap from the password file 838 */ 839 SETPWENT(); 840 while ((pwd = GETPWENT()) != NULL) 841 if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid) 842 bm_setbit(&bm, pwd->pw_uid - cnf->min_uid); 843 ENDPWENT(); 844 845 /* 846 * Then apply the policy, with fallback to reuse if necessary 847 */ 848 if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid) 849 uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid); 850 851 /* 852 * Another sanity check 853 */ 854 if (uid < cnf->min_uid || uid > cnf->max_uid) 855 errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used"); 856 bm_dealloc(&bm); 857 } 858 return uid; 859 } 860 861 862 static uid_t 863 pw_gidpolicy(struct cargs * args, char *nam, gid_t prefer) 864 { 865 struct group *grp; 866 gid_t gid = (uid_t) - 1; 867 struct carg *a_gid = getarg(args, 'g'); 868 struct userconf *cnf = conf.userconf; 869 870 /* 871 * If no arg given, see if default can help out 872 */ 873 if (a_gid == NULL && cnf->default_group && *cnf->default_group) 874 a_gid = addarg(args, 'g', cnf->default_group); 875 876 /* 877 * Check the given gid, if any 878 */ 879 SETGRENT(); 880 if (a_gid != NULL) { 881 if ((grp = GETGRNAM(a_gid->val)) == NULL) { 882 gid = (gid_t) atol(a_gid->val); 883 if ((gid == 0 && !isdigit((unsigned char)*a_gid->val)) || (grp = GETGRGID(gid)) == NULL) 884 errx(EX_NOUSER, "group `%s' is not defined", a_gid->val); 885 } 886 gid = grp->gr_gid; 887 } else if ((grp = GETGRNAM(nam)) != NULL && 888 (grp->gr_mem == NULL || grp->gr_mem[0] == NULL)) { 889 gid = grp->gr_gid; /* Already created? Use it anyway... */ 890 } else { 891 gid_t grid = -1; 892 893 /* 894 * We need to auto-create a group with the user's name. We 895 * can send all the appropriate output to our sister routine 896 * bit first see if we can create a group with gid==uid so we 897 * can keep the user and group ids in sync. We purposely do 898 * NOT check the gid range if we can force the sync. If the 899 * user's name dups an existing group, then the group add 900 * function will happily handle that case for us and exit. 901 */ 902 if (GETGRGID(prefer) == NULL) 903 grid = prefer; 904 if (conf.dryrun) { 905 gid = pw_groupnext(cnf, true); 906 } else { 907 pw_group(M_ADD, nam, grid, NULL); 908 if ((grp = GETGRNAM(nam)) != NULL) 909 gid = grp->gr_gid; 910 } 911 } 912 ENDGRENT(); 913 return gid; 914 } 915 916 917 static time_t 918 pw_pwdpolicy(struct userconf * cnf, struct cargs * args) 919 { 920 time_t result = 0; 921 time_t now = time(NULL); 922 struct carg *arg = getarg(args, 'p'); 923 924 if (arg != NULL) { 925 if ((result = parse_date(now, arg->val)) == now) 926 errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 927 } else if (cnf->password_days > 0) 928 result = now + ((long) cnf->password_days * 86400L); 929 return result; 930 } 931 932 933 static time_t 934 pw_exppolicy(struct userconf * cnf, struct cargs * args) 935 { 936 time_t result = 0; 937 time_t now = time(NULL); 938 struct carg *arg = getarg(args, 'e'); 939 940 if (arg != NULL) { 941 if ((result = parse_date(now, arg->val)) == now) 942 errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 943 } else if (cnf->expire_days > 0) 944 result = now + ((long) cnf->expire_days * 86400L); 945 return result; 946 } 947 948 949 static char * 950 pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user) 951 { 952 struct carg *arg = getarg(args, 'd'); 953 static char home[128]; 954 955 if (arg) 956 return (arg->val); 957 958 if (cnf->home == NULL || *cnf->home == '\0') 959 errx(EX_CONFIG, "no base home directory set"); 960 snprintf(home, sizeof(home), "%s/%s", cnf->home, user); 961 962 return (home); 963 } 964 965 static char * 966 shell_path(char const * path, char *shells[], char *sh) 967 { 968 if (sh != NULL && (*sh == '/' || *sh == '\0')) 969 return sh; /* specified full path or forced none */ 970 else { 971 char *p; 972 char paths[_UC_MAXLINE]; 973 974 /* 975 * We need to search paths 976 */ 977 strlcpy(paths, path, sizeof(paths)); 978 for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) { 979 int i; 980 static char shellpath[256]; 981 982 if (sh != NULL) { 983 snprintf(shellpath, sizeof(shellpath), "%s/%s", p, sh); 984 if (access(shellpath, X_OK) == 0) 985 return shellpath; 986 } else 987 for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) { 988 snprintf(shellpath, sizeof(shellpath), "%s/%s", p, shells[i]); 989 if (access(shellpath, X_OK) == 0) 990 return shellpath; 991 } 992 } 993 if (sh == NULL) 994 errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh); 995 errx(EX_CONFIG, "no default shell available or defined"); 996 return NULL; 997 } 998 } 999 1000 1001 static char * 1002 pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell) 1003 { 1004 char *sh = newshell; 1005 struct carg *arg = getarg(args, 's'); 1006 1007 if (newshell == NULL && arg != NULL) 1008 sh = arg->val; 1009 return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default); 1010 } 1011 1012 #define SALTSIZE 32 1013 1014 static char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./"; 1015 1016 char * 1017 pw_pwcrypt(char *password) 1018 { 1019 int i; 1020 char salt[SALTSIZE + 1]; 1021 char *cryptpw; 1022 1023 static char buf[256]; 1024 1025 /* 1026 * Calculate a salt value 1027 */ 1028 for (i = 0; i < SALTSIZE; i++) 1029 salt[i] = chars[arc4random_uniform(sizeof(chars) - 1)]; 1030 salt[SALTSIZE] = '\0'; 1031 1032 cryptpw = crypt(password, salt); 1033 if (cryptpw == NULL) 1034 errx(EX_CONFIG, "crypt(3) failure"); 1035 return strcpy(buf, cryptpw); 1036 } 1037 1038 1039 static char * 1040 pw_password(struct userconf * cnf, char const * user) 1041 { 1042 int i, l; 1043 char pwbuf[32]; 1044 1045 switch (cnf->default_password) { 1046 case -1: /* Random password */ 1047 l = (arc4random() % 8 + 8); /* 8 - 16 chars */ 1048 for (i = 0; i < l; i++) 1049 pwbuf[i] = chars[arc4random_uniform(sizeof(chars)-1)]; 1050 pwbuf[i] = '\0'; 1051 1052 /* 1053 * We give this information back to the user 1054 */ 1055 if (conf.fd == -1 && !conf.dryrun) { 1056 if (isatty(STDOUT_FILENO)) 1057 printf("Password for '%s' is: ", user); 1058 printf("%s\n", pwbuf); 1059 fflush(stdout); 1060 } 1061 break; 1062 1063 case -2: /* No password at all! */ 1064 return ""; 1065 1066 case 0: /* No login - default */ 1067 default: 1068 return "*"; 1069 1070 case 1: /* user's name */ 1071 strlcpy(pwbuf, user, sizeof(pwbuf)); 1072 break; 1073 } 1074 return pw_pwcrypt(pwbuf); 1075 } 1076 1077 static int 1078 pw_userdel(char *name, long id) 1079 { 1080 struct passwd *pwd = NULL; 1081 char file[MAXPATHLEN]; 1082 char home[MAXPATHLEN]; 1083 uid_t uid; 1084 struct group *gr, *grp; 1085 char grname[LOGNAMESIZE]; 1086 int rc; 1087 struct stat st; 1088 int valid_type = _PWF_FILES; 1089 1090 if (id < 0 && name == NULL) 1091 errx(EX_DATAERR, "username or id required"); 1092 1093 pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id); 1094 if (pwd == NULL) { 1095 if (name == NULL) 1096 errx(EX_NOUSER, "no such uid `%ld'", id); 1097 errx(EX_NOUSER, "no such user `%s'", name); 1098 } 1099 1100 if (conf.userconf->nispasswd && *conf.userconf->nispasswd == '/') 1101 valid_type = _PWF_NIS; 1102 1103 if (PWF._altdir == PWF_REGULAR && 1104 ((pwd->pw_fields & _PWF_SOURCE) != valid_type)) 1105 errx(EX_NOUSER, "no such %s user `%s'", 1106 valid_type == _PWF_FILES ? "local" : "NIS" , name); 1107 1108 uid = pwd->pw_uid; 1109 if (name == NULL) 1110 name = pwd->pw_name; 1111 1112 if (strcmp(pwd->pw_name, "root") == 0) 1113 errx(EX_DATAERR, "cannot remove user 'root'"); 1114 1115 /* Remove opie record from /etc/opiekeys */ 1116 1117 if (PWALTDIR() != PWF_ALT) 1118 rmopie(pwd->pw_name); 1119 1120 if (!PWALTDIR()) { 1121 /* Remove crontabs */ 1122 snprintf(file, sizeof(file), "/var/cron/tabs/%s", pwd->pw_name); 1123 if (access(file, F_OK) == 0) { 1124 snprintf(file, sizeof(file), "crontab -u %s -r", pwd->pw_name); 1125 system(file); 1126 } 1127 } 1128 /* 1129 * Save these for later, since contents of pwd may be 1130 * invalidated by deletion 1131 */ 1132 snprintf(file, sizeof(file), "%s/%s", _PATH_MAILDIR, pwd->pw_name); 1133 strlcpy(home, pwd->pw_dir, sizeof(home)); 1134 gr = GETGRGID(pwd->pw_gid); 1135 if (gr != NULL) 1136 strlcpy(grname, gr->gr_name, LOGNAMESIZE); 1137 else 1138 grname[0] = '\0'; 1139 1140 rc = delpwent(pwd); 1141 if (rc == -1) 1142 err(EX_IOERR, "user '%s' does not exist", pwd->pw_name); 1143 else if (rc != 0) 1144 err(EX_IOERR, "passwd update"); 1145 1146 if (conf.userconf->nispasswd && *conf.userconf->nispasswd=='/') { 1147 rc = delnispwent(conf.userconf->nispasswd, name); 1148 if (rc == -1) 1149 warnx("WARNING: user '%s' does not exist in NIS passwd", 1150 pwd->pw_name); 1151 else if (rc != 0) 1152 warn("WARNING: NIS passwd update"); 1153 /* non-fatal */ 1154 } 1155 1156 grp = GETGRNAM(name); 1157 if (grp != NULL && 1158 (grp->gr_mem == NULL || *grp->gr_mem == NULL) && 1159 strcmp(name, grname) == 0) 1160 delgrent(GETGRNAM(name)); 1161 SETGRENT(); 1162 while ((grp = GETGRENT()) != NULL) { 1163 int i, j; 1164 char group[MAXLOGNAME]; 1165 if (grp->gr_mem == NULL) 1166 continue; 1167 1168 for (i = 0; grp->gr_mem[i] != NULL; i++) { 1169 if (strcmp(grp->gr_mem[i], name) != 0) 1170 continue; 1171 1172 for (j = i; grp->gr_mem[j] != NULL; j++) 1173 grp->gr_mem[j] = grp->gr_mem[j+1]; 1174 strlcpy(group, grp->gr_name, MAXLOGNAME); 1175 chggrent(group, grp); 1176 } 1177 } 1178 ENDGRENT(); 1179 1180 pw_log(conf.userconf, M_DELETE, W_USER, "%s(%u) account removed", name, 1181 uid); 1182 1183 /* Remove mail file */ 1184 if (PWALTDIR() != PWF_ALT) 1185 unlinkat(conf.rootfd, file + 1, 0); 1186 1187 /* Remove at jobs */ 1188 if (!PWALTDIR() && getpwuid(uid) == NULL) 1189 rmat(uid); 1190 1191 /* Remove home directory and contents */ 1192 if (PWALTDIR() != PWF_ALT && conf.deletehome && *home == '/' && 1193 getpwuid(uid) == NULL && 1194 fstatat(conf.rootfd, home + 1, &st, 0) != -1) { 1195 rm_r(conf.rootfd, home, uid); 1196 pw_log(conf.userconf, M_DELETE, W_USER, "%s(%u) home '%s' %s" 1197 "removed", name, uid, home, 1198 fstatat(conf.rootfd, home + 1, &st, 0) == -1 ? "" : "not " 1199 "completely "); 1200 } 1201 1202 return (EXIT_SUCCESS); 1203 } 1204 1205 static int 1206 print_user(struct passwd * pwd) 1207 { 1208 if (!conf.pretty) { 1209 char *buf; 1210 1211 buf = conf.v7 ? pw_make_v7(pwd) : pw_make(pwd); 1212 printf("%s\n", buf); 1213 free(buf); 1214 } else { 1215 int j; 1216 char *p; 1217 struct group *grp = GETGRGID(pwd->pw_gid); 1218 char uname[60] = "User &", office[60] = "[None]", 1219 wphone[60] = "[None]", hphone[60] = "[None]"; 1220 char acexpire[32] = "[None]", pwexpire[32] = "[None]"; 1221 struct tm * tptr; 1222 1223 if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { 1224 strlcpy(uname, p, sizeof(uname)); 1225 if ((p = strtok(NULL, ",")) != NULL) { 1226 strlcpy(office, p, sizeof(office)); 1227 if ((p = strtok(NULL, ",")) != NULL) { 1228 strlcpy(wphone, p, sizeof(wphone)); 1229 if ((p = strtok(NULL, "")) != NULL) { 1230 strlcpy(hphone, p, 1231 sizeof(hphone)); 1232 } 1233 } 1234 } 1235 } 1236 /* 1237 * Handle '&' in gecos field 1238 */ 1239 if ((p = strchr(uname, '&')) != NULL) { 1240 int l = strlen(pwd->pw_name); 1241 int m = strlen(p); 1242 1243 memmove(p + l, p + 1, m); 1244 memmove(p, pwd->pw_name, l); 1245 *p = (char) toupper((unsigned char)*p); 1246 } 1247 if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL) 1248 strftime(acexpire, sizeof acexpire, "%c", tptr); 1249 if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL) 1250 strftime(pwexpire, sizeof pwexpire, "%c", tptr); 1251 printf("Login Name: %-15s #%-12u Group: %-15s #%u\n" 1252 " Full Name: %s\n" 1253 " Home: %-26.26s Class: %s\n" 1254 " Shell: %-26.26s Office: %s\n" 1255 "Work Phone: %-26.26s Home Phone: %s\n" 1256 "Acc Expire: %-26.26s Pwd Expire: %s\n", 1257 pwd->pw_name, pwd->pw_uid, 1258 grp ? grp->gr_name : "(invalid)", pwd->pw_gid, 1259 uname, pwd->pw_dir, pwd->pw_class, 1260 pwd->pw_shell, office, wphone, hphone, 1261 acexpire, pwexpire); 1262 SETGRENT(); 1263 j = 0; 1264 while ((grp=GETGRENT()) != NULL) 1265 { 1266 int i = 0; 1267 if (grp->gr_mem != NULL) { 1268 while (grp->gr_mem[i] != NULL) 1269 { 1270 if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) 1271 { 1272 printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name); 1273 break; 1274 } 1275 ++i; 1276 } 1277 } 1278 } 1279 ENDGRENT(); 1280 printf("%s", j ? "\n" : ""); 1281 } 1282 return EXIT_SUCCESS; 1283 } 1284 1285 char * 1286 pw_checkname(char *name, int gecos) 1287 { 1288 char showch[8]; 1289 const char *badchars, *ch, *showtype; 1290 int reject; 1291 1292 ch = name; 1293 reject = 0; 1294 if (gecos) { 1295 /* See if the name is valid as a gecos (comment) field. */ 1296 badchars = ":!@"; 1297 showtype = "gecos field"; 1298 } else { 1299 /* See if the name is valid as a userid or group. */ 1300 badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\""; 1301 showtype = "userid/group name"; 1302 /* Userids and groups can not have a leading '-'. */ 1303 if (*ch == '-') 1304 reject = 1; 1305 } 1306 if (!reject) { 1307 while (*ch) { 1308 if (strchr(badchars, *ch) != NULL || *ch < ' ' || 1309 *ch == 127) { 1310 reject = 1; 1311 break; 1312 } 1313 /* 8-bit characters are only allowed in GECOS fields */ 1314 if (!gecos && (*ch & 0x80)) { 1315 reject = 1; 1316 break; 1317 } 1318 ch++; 1319 } 1320 } 1321 /* 1322 * A `$' is allowed as the final character for userids and groups, 1323 * mainly for the benefit of samba. 1324 */ 1325 if (reject && !gecos) { 1326 if (*ch == '$' && *(ch + 1) == '\0') { 1327 reject = 0; 1328 ch++; 1329 } 1330 } 1331 if (reject) { 1332 snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127) 1333 ? "`%c'" : "0x%02x", *ch); 1334 errx(EX_DATAERR, "invalid character %s at position %td in %s", 1335 showch, (ch - name), showtype); 1336 } 1337 if (!gecos && (ch - name) > LOGNAMESIZE) 1338 errx(EX_DATAERR, "name too long `%s' (max is %d)", name, 1339 LOGNAMESIZE); 1340 1341 return (name); 1342 } 1343 1344 1345 static void 1346 rmat(uid_t uid) 1347 { 1348 DIR *d = opendir("/var/at/jobs"); 1349 1350 if (d != NULL) { 1351 struct dirent *e; 1352 1353 while ((e = readdir(d)) != NULL) { 1354 struct stat st; 1355 1356 if (strncmp(e->d_name, ".lock", 5) != 0 && 1357 stat(e->d_name, &st) == 0 && 1358 !S_ISDIR(st.st_mode) && 1359 st.st_uid == uid) { 1360 char tmp[MAXPATHLEN]; 1361 1362 snprintf(tmp, sizeof(tmp), "/usr/bin/atrm %s", e->d_name); 1363 system(tmp); 1364 } 1365 } 1366 closedir(d); 1367 } 1368 } 1369 1370 static void 1371 rmopie(char const * name) 1372 { 1373 char tmp[1014]; 1374 FILE *fp; 1375 int fd; 1376 size_t len; 1377 off_t atofs = 0; 1378 1379 if ((fd = openat(conf.rootfd, "etc/opiekeys", O_RDWR)) == -1) 1380 return; 1381 1382 fp = fdopen(fd, "r+"); 1383 len = strlen(name); 1384 1385 while (fgets(tmp, sizeof(tmp), fp) != NULL) { 1386 if (strncmp(name, tmp, len) == 0 && tmp[len]==' ') { 1387 /* Comment username out */ 1388 if (fseek(fp, atofs, SEEK_SET) == 0) 1389 fwrite("#", 1, 1, fp); 1390 break; 1391 } 1392 atofs = ftell(fp); 1393 } 1394 /* 1395 * If we got an error of any sort, don't update! 1396 */ 1397 fclose(fp); 1398 } 1399