pw_user.c revision 284113
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 284113 2015-06-07 11:35:34Z bapt $"; 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 52static char locked_str[] = "*LOCKED*"; 53 54static int delete_user(struct userconf *cnf, struct passwd *pwd, 55 struct carg *a_name, int delete, int mode); 56static int print_user(struct passwd * pwd, int pretty, int v7); 57static uid_t pw_uidpolicy(struct userconf * cnf, struct cargs * args); 58static uid_t pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer); 59static time_t pw_pwdpolicy(struct userconf * cnf, struct cargs * args); 60static time_t pw_exppolicy(struct userconf * cnf, struct cargs * args); 61static char *pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user); 62static char *pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell); 63static char *pw_password(struct userconf * cnf, struct cargs * args, char const * user); 64static char *shell_path(char const * path, char *shells[], char *sh); 65static void rmat(uid_t uid); 66static void rmopie(char const * name); 67 68static void 69create_and_populate_homedir(int mode, struct cargs *args, struct passwd *pwd, 70 struct userconf *cnf) 71{ 72 char *homedir, *dotdir; 73 struct carg *arg; 74 75 homedir = dotdir = NULL; 76 77 if ((arg = getarg(args, 'R'))) { 78 asprintf(&homedir, "%s/%s", arg->val, pwd->pw_dir); 79 if (homedir == NULL) 80 errx(EX_OSERR, "out of memory"); 81 asprintf(&dotdir, "%s/%s", arg->val, cnf->dotdir); 82 } 83 84 copymkdir(homedir ? homedir : pwd->pw_dir, dotdir ? dotdir: cnf->dotdir, 85 cnf->homemode, pwd->pw_uid, pwd->pw_gid); 86 pw_log(cnf, mode, W_USER, "%s(%u) home %s made", pwd->pw_name, 87 pwd->pw_uid, pwd->pw_dir); 88} 89 90/*- 91 * -C config configuration file 92 * -q quiet operation 93 * -n name login name 94 * -u uid user id 95 * -c comment user name/comment 96 * -d directory home directory 97 * -e date account expiry date 98 * -p date password expiry date 99 * -g grp primary group 100 * -G grp1,grp2 additional groups 101 * -m [ -k dir ] create and set up home 102 * -s shell name of login shell 103 * -o duplicate uid ok 104 * -L class user class 105 * -l name new login name 106 * -h fd password filehandle 107 * -H fd encrypted password filehandle 108 * -F force print or add 109 * Setting defaults: 110 * -D set user defaults 111 * -b dir default home root dir 112 * -e period default expiry period 113 * -p period default password change period 114 * -g group default group 115 * -G grp1,grp2.. default additional groups 116 * -L class default login class 117 * -k dir default home skeleton 118 * -s shell default shell 119 * -w method default password method 120 */ 121 122int 123pw_user(struct userconf * cnf, int mode, struct cargs * args) 124{ 125 int rc, edited = 0; 126 char *p = NULL; 127 char *passtmp; 128 struct carg *a_name; 129 struct carg *a_uid; 130 struct carg *arg; 131 struct passwd *pwd = NULL; 132 struct group *grp; 133 struct stat st; 134 char line[_PASSWORD_LEN+1]; 135 char path[MAXPATHLEN]; 136 FILE *fp; 137 char *dmode_c; 138 void *set = NULL; 139 140 static struct passwd fakeuser = 141 { 142 NULL, 143 "*", 144 -1, 145 -1, 146 0, 147 "", 148 "User &", 149 "/nonexistent", 150 "/bin/sh", 151 0 152#if defined(__FreeBSD__) 153 ,0 154#endif 155 }; 156 157 158 /* 159 * With M_NEXT, we only need to return the 160 * next uid to stdout 161 */ 162 if (mode == M_NEXT) 163 { 164 uid_t next = pw_uidpolicy(cnf, args); 165 if (getarg(args, 'q')) 166 return next; 167 printf("%u:", next); 168 pw_group(cnf, mode, args); 169 return EXIT_SUCCESS; 170 } 171 172 /* 173 * We can do all of the common legwork here 174 */ 175 176 if ((arg = getarg(args, 'b')) != NULL) { 177 cnf->home = arg->val; 178 } 179 180 if ((arg = getarg(args, 'M')) != NULL) { 181 dmode_c = arg->val; 182 if ((set = setmode(dmode_c)) == NULL) 183 errx(EX_DATAERR, "invalid directory creation mode '%s'", 184 dmode_c); 185 cnf->homemode = getmode(set, _DEF_DIRMODE); 186 free(set); 187 } 188 189 /* 190 * If we'll need to use it or we're updating it, 191 * then create the base home directory if necessary 192 */ 193 if (arg != NULL || getarg(args, 'm') != NULL) { 194 int l = strlen(cnf->home); 195 196 if (l > 1 && cnf->home[l-1] == '/') /* Shave off any trailing path delimiter */ 197 cnf->home[--l] = '\0'; 198 199 if (l < 2 || *cnf->home != '/') /* Check for absolute path name */ 200 errx(EX_DATAERR, "invalid base directory for home '%s'", cnf->home); 201 202 if (stat(cnf->home, &st) == -1) { 203 char dbuf[MAXPATHLEN]; 204 205 /* 206 * This is a kludge especially for Joerg :) 207 * If the home directory would be created in the root partition, then 208 * we really create it under /usr which is likely to have more space. 209 * But we create a symlink from cnf->home -> "/usr" -> cnf->home 210 */ 211 if (strchr(cnf->home+1, '/') == NULL) { 212 snprintf(dbuf, MAXPATHLEN, "/usr%s", cnf->home); 213 if (mkdir(dbuf, _DEF_DIRMODE) != -1 || errno == EEXIST) { 214 chown(dbuf, 0, 0); 215 /* 216 * Skip first "/" and create symlink: 217 * /home -> usr/home 218 */ 219 symlink(dbuf+1, cnf->home); 220 } 221 /* If this falls, fall back to old method */ 222 } 223 strlcpy(dbuf, cnf->home, sizeof(dbuf)); 224 p = dbuf; 225 if (stat(dbuf, &st) == -1) { 226 while ((p = strchr(p + 1, '/')) != NULL) { 227 *p = '\0'; 228 if (stat(dbuf, &st) == -1) { 229 if (mkdir(dbuf, _DEF_DIRMODE) == -1) 230 goto direrr; 231 chown(dbuf, 0, 0); 232 } else if (!S_ISDIR(st.st_mode)) 233 errx(EX_OSFILE, "'%s' (root home parent) is not a directory", dbuf); 234 *p = '/'; 235 } 236 } 237 if (stat(dbuf, &st) == -1) { 238 if (mkdir(dbuf, _DEF_DIRMODE) == -1) { 239 direrr: err(EX_OSFILE, "mkdir '%s'", dbuf); 240 } 241 chown(dbuf, 0, 0); 242 } 243 } else if (!S_ISDIR(st.st_mode)) 244 errx(EX_OSFILE, "root home `%s' is not a directory", cnf->home); 245 } 246 247 if ((arg = getarg(args, 'e')) != NULL) 248 cnf->expire_days = atoi(arg->val); 249 250 if ((arg = getarg(args, 'y')) != NULL) 251 cnf->nispasswd = arg->val; 252 253 if ((arg = getarg(args, 'p')) != NULL && arg->val) 254 cnf->password_days = atoi(arg->val); 255 256 if ((arg = getarg(args, 'g')) != NULL) { 257 if (!*(p = arg->val)) /* Handle empty group list specially */ 258 cnf->default_group = ""; 259 else { 260 if ((grp = GETGRNAM(p)) == NULL) { 261 if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 262 errx(EX_NOUSER, "group `%s' does not exist", p); 263 } 264 cnf->default_group = newstr(grp->gr_name); 265 } 266 } 267 if ((arg = getarg(args, 'L')) != NULL) 268 cnf->default_class = pw_checkname(arg->val, 0); 269 270 if ((arg = getarg(args, 'G')) != NULL && arg->val) { 271 int i = 0; 272 273 for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) { 274 if ((grp = GETGRNAM(p)) == NULL) { 275 if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 276 errx(EX_NOUSER, "group `%s' does not exist", p); 277 } 278 if (extendarray(&cnf->groups, &cnf->numgroups, i + 2) != -1) 279 cnf->groups[i++] = newstr(grp->gr_name); 280 } 281 while (i < cnf->numgroups) 282 cnf->groups[i++] = NULL; 283 } 284 285 if ((arg = getarg(args, 'k')) != NULL) { 286 if (stat(cnf->dotdir = arg->val, &st) == -1 || !S_ISDIR(st.st_mode)) 287 errx(EX_OSFILE, "skeleton `%s' is not a directory or does not exist", cnf->dotdir); 288 } 289 290 if ((arg = getarg(args, 's')) != NULL) 291 cnf->shell_default = arg->val; 292 293 if ((arg = getarg(args, 'w')) != NULL) 294 cnf->default_password = boolean_val(arg->val, cnf->default_password); 295 if (mode == M_ADD && getarg(args, 'D')) { 296 if (getarg(args, 'n') != NULL) 297 errx(EX_DATAERR, "can't combine `-D' with `-n name'"); 298 if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 299 if ((cnf->min_uid = (uid_t) atoi(p)) == 0) 300 cnf->min_uid = 1000; 301 if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid) 302 cnf->max_uid = 32000; 303 } 304 if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 305 if ((cnf->min_gid = (gid_t) atoi(p)) == 0) 306 cnf->min_gid = 1000; 307 if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid) 308 cnf->max_gid = 32000; 309 } 310 311 arg = getarg(args, 'C'); 312 if (write_userconfig(arg ? arg->val : NULL)) 313 return EXIT_SUCCESS; 314 err(EX_IOERR, "config udpate"); 315 } 316 317 if (mode == M_PRINT && getarg(args, 'a')) { 318 int pretty = getarg(args, 'P') != NULL; 319 int v7 = getarg(args, '7') != NULL; 320 SETPWENT(); 321 while ((pwd = GETPWENT()) != NULL) 322 print_user(pwd, pretty, v7); 323 ENDPWENT(); 324 return EXIT_SUCCESS; 325 } 326 327 if ((a_name = getarg(args, 'n')) != NULL) 328 pwd = GETPWNAM(pw_checkname(a_name->val, 0)); 329 a_uid = getarg(args, 'u'); 330 331 if (a_uid == NULL) { 332 if (a_name == NULL) 333 errx(EX_DATAERR, "user name or id required"); 334 335 /* 336 * Determine whether 'n' switch is name or uid - we don't 337 * really don't really care which we have, but we need to 338 * know. 339 */ 340 if (mode != M_ADD && pwd == NULL 341 && strspn(a_name->val, "0123456789") == strlen(a_name->val) 342 && *a_name->val) { 343 (a_uid = a_name)->ch = 'u'; 344 a_name = NULL; 345 } 346 } else { 347 if (strspn(a_uid->val, "0123456789") != strlen(a_uid->val)) 348 errx(EX_USAGE, "-u expects a number"); 349 } 350 351 /* 352 * Update, delete & print require that the user exists 353 */ 354 if (mode == M_UPDATE || mode == M_DELETE || 355 mode == M_PRINT || mode == M_LOCK || mode == M_UNLOCK) { 356 357 if (a_name == NULL && pwd == NULL) /* Try harder */ 358 pwd = GETPWUID(atoi(a_uid->val)); 359 360 if (pwd == NULL) { 361 if (mode == M_PRINT && getarg(args, 'F')) { 362 fakeuser.pw_name = a_name ? a_name->val : "nouser"; 363 fakeuser.pw_uid = a_uid ? (uid_t) atol(a_uid->val) : (uid_t) -1; 364 return print_user(&fakeuser, 365 getarg(args, 'P') != NULL, 366 getarg(args, '7') != NULL); 367 } 368 if (a_name == NULL) 369 errx(EX_NOUSER, "no such uid `%s'", a_uid->val); 370 errx(EX_NOUSER, "no such user `%s'", a_name->val); 371 } 372 373 if (a_name == NULL) /* May be needed later */ 374 a_name = addarg(args, 'n', newstr(pwd->pw_name)); 375 376 /* 377 * The M_LOCK and M_UNLOCK functions simply add or remove 378 * a "*LOCKED*" prefix from in front of the password to 379 * prevent it decoding correctly, and therefore prevents 380 * access. Of course, this only prevents access via 381 * password authentication (not ssh, kerberos or any 382 * other method that does not use the UNIX password) but 383 * that is a known limitation. 384 */ 385 386 if (mode == M_LOCK) { 387 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) == 0) 388 errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name); 389 asprintf(&passtmp, "%s%s", locked_str, pwd->pw_passwd); 390 if (passtmp == NULL) /* disaster */ 391 errx(EX_UNAVAILABLE, "out of memory"); 392 pwd->pw_passwd = passtmp; 393 edited = 1; 394 } else if (mode == M_UNLOCK) { 395 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) != 0) 396 errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name); 397 pwd->pw_passwd += sizeof(locked_str)-1; 398 edited = 1; 399 } else if (mode == M_DELETE) 400 return (delete_user(cnf, pwd, a_name, 401 getarg(args, 'r') != NULL, mode)); 402 else if (mode == M_PRINT) 403 return print_user(pwd, 404 getarg(args, 'P') != NULL, 405 getarg(args, '7') != NULL); 406 407 /* 408 * The rest is edit code 409 */ 410 if ((arg = getarg(args, 'l')) != NULL) { 411 if (strcmp(pwd->pw_name, "root") == 0) 412 errx(EX_DATAERR, "can't rename `root' account"); 413 pwd->pw_name = pw_checkname(arg->val, 0); 414 edited = 1; 415 } 416 417 if ((arg = getarg(args, 'u')) != NULL && isdigit((unsigned char)*arg->val)) { 418 pwd->pw_uid = (uid_t) atol(arg->val); 419 edited = 1; 420 if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) 421 errx(EX_DATAERR, "can't change uid of `root' account"); 422 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 423 warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name); 424 } 425 426 if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) { /* Already checked this */ 427 gid_t newgid = (gid_t) GETGRNAM(cnf->default_group)->gr_gid; 428 if (newgid != pwd->pw_gid) { 429 edited = 1; 430 pwd->pw_gid = newgid; 431 } 432 } 433 434 if ((arg = getarg(args, 'p')) != NULL) { 435 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 436 if (pwd->pw_change != 0) { 437 pwd->pw_change = 0; 438 edited = 1; 439 } 440 } 441 else { 442 time_t now = time(NULL); 443 time_t expire = parse_date(now, arg->val); 444 445 if (pwd->pw_change != expire) { 446 pwd->pw_change = expire; 447 edited = 1; 448 } 449 } 450 } 451 452 if ((arg = getarg(args, 'e')) != NULL) { 453 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 454 if (pwd->pw_expire != 0) { 455 pwd->pw_expire = 0; 456 edited = 1; 457 } 458 } 459 else { 460 time_t now = time(NULL); 461 time_t expire = parse_date(now, arg->val); 462 463 if (pwd->pw_expire != expire) { 464 pwd->pw_expire = expire; 465 edited = 1; 466 } 467 } 468 } 469 470 if ((arg = getarg(args, 's')) != NULL) { 471 char *shell = shell_path(cnf->shelldir, cnf->shells, arg->val); 472 if (shell == NULL) 473 shell = ""; 474 if (strcmp(shell, pwd->pw_shell) != 0) { 475 pwd->pw_shell = shell; 476 edited = 1; 477 } 478 } 479 480 if (getarg(args, 'L')) { 481 if (cnf->default_class == NULL) 482 cnf->default_class = ""; 483 if (strcmp(pwd->pw_class, cnf->default_class) != 0) { 484 pwd->pw_class = cnf->default_class; 485 edited = 1; 486 } 487 } 488 489 if ((arg = getarg(args, 'd')) != NULL) { 490 if (strcmp(pwd->pw_dir, arg->val)) 491 edited = 1; 492 if (stat(pwd->pw_dir = arg->val, &st) == -1) { 493 if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0) 494 warnx("WARNING: home `%s' does not exist", pwd->pw_dir); 495 } else if (!S_ISDIR(st.st_mode)) 496 warnx("WARNING: home `%s' is not a directory", pwd->pw_dir); 497 } 498 499 if ((arg = getarg(args, 'w')) != NULL && 500 getarg(args, 'h') == NULL && getarg(args, 'H') == NULL) { 501 login_cap_t *lc; 502 503 lc = login_getpwclass(pwd); 504 if (lc == NULL || 505 login_setcryptfmt(lc, "sha512", NULL) == NULL) 506 warn("setting crypt(3) format"); 507 login_close(lc); 508 pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 509 edited = 1; 510 } 511 512 } else { 513 login_cap_t *lc; 514 515 /* 516 * Add code 517 */ 518 519 if (a_name == NULL) /* Required */ 520 errx(EX_DATAERR, "login name required"); 521 else if ((pwd = GETPWNAM(a_name->val)) != NULL) /* Exists */ 522 errx(EX_DATAERR, "login name `%s' already exists", a_name->val); 523 524 /* 525 * Now, set up defaults for a new user 526 */ 527 pwd = &fakeuser; 528 pwd->pw_name = a_name->val; 529 pwd->pw_class = cnf->default_class ? cnf->default_class : ""; 530 pwd->pw_uid = pw_uidpolicy(cnf, args); 531 pwd->pw_gid = pw_gidpolicy(cnf, args, pwd->pw_name, (gid_t) pwd->pw_uid); 532 pwd->pw_change = pw_pwdpolicy(cnf, args); 533 pwd->pw_expire = pw_exppolicy(cnf, args); 534 pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name); 535 pwd->pw_shell = pw_shellpolicy(cnf, args, NULL); 536 lc = login_getpwclass(pwd); 537 if (lc == NULL || login_setcryptfmt(lc, "sha512", NULL) == NULL) 538 warn("setting crypt(3) format"); 539 login_close(lc); 540 pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 541 edited = 1; 542 543 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 544 warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name); 545 } 546 547 /* 548 * Shared add/edit code 549 */ 550 if ((arg = getarg(args, 'c')) != NULL) { 551 char *gecos = pw_checkname(arg->val, 1); 552 if (strcmp(pwd->pw_gecos, gecos) != 0) { 553 pwd->pw_gecos = gecos; 554 edited = 1; 555 } 556 } 557 558 if ((arg = getarg(args, 'h')) != NULL || 559 (arg = getarg(args, 'H')) != NULL) { 560 if (strcmp(arg->val, "-") == 0) { 561 if (!pwd->pw_passwd || *pwd->pw_passwd != '*') { 562 pwd->pw_passwd = "*"; /* No access */ 563 edited = 1; 564 } 565 } else { 566 int fd = atoi(arg->val); 567 int precrypt = (arg->ch == 'H'); 568 int b; 569 int istty = isatty(fd); 570 struct termios t; 571 login_cap_t *lc; 572 573 if (istty) { 574 if (tcgetattr(fd, &t) == -1) 575 istty = 0; 576 else { 577 struct termios n = t; 578 579 /* Disable echo */ 580 n.c_lflag &= ~(ECHO); 581 tcsetattr(fd, TCSANOW, &n); 582 printf("%s%spassword for user %s:", 583 (mode == M_UPDATE) ? "new " : "", 584 precrypt ? "encrypted " : "", 585 pwd->pw_name); 586 fflush(stdout); 587 } 588 } 589 b = read(fd, line, sizeof(line) - 1); 590 if (istty) { /* Restore state */ 591 tcsetattr(fd, TCSANOW, &t); 592 fputc('\n', stdout); 593 fflush(stdout); 594 } 595 if (b < 0) 596 err(EX_IOERR, "-%c file descriptor", 597 precrypt ? 'H' : 'h'); 598 line[b] = '\0'; 599 if ((p = strpbrk(line, "\r\n")) != NULL) 600 *p = '\0'; 601 if (!*line) 602 errx(EX_DATAERR, "empty password read on file descriptor %d", fd); 603 if (precrypt) { 604 if (strchr(line, ':') != NULL) 605 return EX_DATAERR; 606 pwd->pw_passwd = line; 607 } else { 608 lc = login_getpwclass(pwd); 609 if (lc == NULL || 610 login_setcryptfmt(lc, "sha512", NULL) == NULL) 611 warn("setting crypt(3) format"); 612 login_close(lc); 613 pwd->pw_passwd = pw_pwcrypt(line); 614 } 615 edited = 1; 616 } 617 } 618 619 /* 620 * Special case: -N only displays & exits 621 */ 622 if (getarg(args, 'N') != NULL) 623 return print_user(pwd, 624 getarg(args, 'P') != NULL, 625 getarg(args, '7') != NULL); 626 627 if (mode == M_ADD) { 628 edited = 1; /* Always */ 629 rc = addpwent(pwd); 630 if (rc == -1) 631 errx(EX_IOERR, "user '%s' already exists", 632 pwd->pw_name); 633 else if (rc != 0) 634 err(EX_IOERR, "passwd file update"); 635 if (cnf->nispasswd && *cnf->nispasswd=='/') { 636 rc = addnispwent(cnf->nispasswd, pwd); 637 if (rc == -1) 638 warnx("User '%s' already exists in NIS passwd", pwd->pw_name); 639 else 640 warn("NIS passwd update"); 641 /* NOTE: we treat NIS-only update errors as non-fatal */ 642 } 643 } else if (mode == M_UPDATE || mode == M_LOCK || mode == M_UNLOCK) { 644 if (edited) { /* Only updated this if required */ 645 rc = chgpwent(a_name->val, pwd); 646 if (rc == -1) 647 errx(EX_IOERR, "user '%s' does not exist (NIS?)", pwd->pw_name); 648 else if (rc != 0) 649 err(EX_IOERR, "passwd file update"); 650 if ( cnf->nispasswd && *cnf->nispasswd=='/') { 651 rc = chgnispwent(cnf->nispasswd, a_name->val, pwd); 652 if (rc == -1) 653 warn("User '%s' not found in NIS passwd", pwd->pw_name); 654 else 655 warn("NIS passwd update"); 656 /* NOTE: NIS-only update errors are not fatal */ 657 } 658 } 659 } 660 661 /* 662 * Ok, user is created or changed - now edit group file 663 */ 664 665 if (mode == M_ADD || getarg(args, 'G') != NULL) { 666 int i, j; 667 /* First remove the user from all group */ 668 SETGRENT(); 669 while ((grp = GETGRENT()) != NULL) { 670 char group[MAXLOGNAME]; 671 if (grp->gr_mem == NULL) 672 continue; 673 for (i = 0; grp->gr_mem[i] != NULL; i++) { 674 if (strcmp(grp->gr_mem[i] , pwd->pw_name) != 0) 675 continue; 676 for (j = i; grp->gr_mem[j] != NULL ; j++) 677 grp->gr_mem[j] = grp->gr_mem[j+1]; 678 strlcpy(group, grp->gr_name, MAXLOGNAME); 679 chggrent(group, grp); 680 } 681 } 682 ENDGRENT(); 683 684 /* now add to group where needed */ 685 for (i = 0; cnf->groups[i] != NULL; i++) { 686 grp = GETGRNAM(cnf->groups[i]); 687 grp = gr_add(grp, pwd->pw_name); 688 /* 689 * grp can only be NULL in 2 cases: 690 * - the new member is already a member 691 * - a problem with memory occurs 692 * in both cases we want to skip now. 693 */ 694 if (grp == NULL) 695 continue; 696 chggrent(cnf->groups[i], grp); 697 free(grp); 698 } 699 } 700 701 702 /* go get a current version of pwd */ 703 pwd = GETPWNAM(a_name->val); 704 if (pwd == NULL) { 705 /* This will fail when we rename, so special case that */ 706 if (mode == M_UPDATE && (arg = getarg(args, 'l')) != NULL) { 707 a_name->val = arg->val; /* update new name */ 708 pwd = GETPWNAM(a_name->val); /* refetch renamed rec */ 709 } 710 } 711 if (pwd == NULL) /* can't go on without this */ 712 errx(EX_NOUSER, "user '%s' disappeared during update", a_name->val); 713 714 grp = GETGRGID(pwd->pw_gid); 715 pw_log(cnf, mode, W_USER, "%s(%u):%s(%u):%s:%s:%s", 716 pwd->pw_name, pwd->pw_uid, 717 grp ? grp->gr_name : "unknown", (grp ? grp->gr_gid : (uid_t)-1), 718 pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 719 720 /* 721 * If adding, let's touch and chown the user's mail file. This is not 722 * strictly necessary under BSD with a 0755 maildir but it also 723 * doesn't hurt anything to create the empty mailfile 724 */ 725 if (mode == M_ADD) { 726 if (PWALTDIR() != PWF_ALT) { 727 arg = getarg(args, 'R'); 728 snprintf(path, sizeof(path), "%s%s/%s", 729 arg ? arg->val : "", _PATH_MAILDIR, pwd->pw_name); 730 close(open(path, O_RDWR | O_CREAT, 0600)); /* Preserve contents & 731 * mtime */ 732 chown(path, pwd->pw_uid, pwd->pw_gid); 733 } 734 } 735 736 /* 737 * Let's create and populate the user's home directory. Note 738 * that this also `works' for editing users if -m is used, but 739 * existing files will *not* be overwritten. 740 */ 741 if (PWALTDIR() != PWF_ALT && getarg(args, 'm') != NULL && pwd->pw_dir && 742 *pwd->pw_dir == '/' && pwd->pw_dir[1]) 743 create_and_populate_homedir(mode, args, pwd, cnf); 744 745 /* 746 * Finally, send mail to the new user as well, if we are asked to 747 */ 748 if (mode == M_ADD && !PWALTDIR() && cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) { 749 FILE *pfp = popen(_PATH_SENDMAIL " -t", "w"); 750 751 if (pfp == NULL) 752 warn("sendmail"); 753 else { 754 fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name); 755 while (fgets(line, sizeof(line), fp) != NULL) { 756 /* Do substitutions? */ 757 fputs(line, pfp); 758 } 759 pclose(pfp); 760 pw_log(cnf, mode, W_USER, "%s(%u) new user mail sent", 761 pwd->pw_name, pwd->pw_uid); 762 } 763 fclose(fp); 764 } 765 766 return EXIT_SUCCESS; 767} 768 769 770static uid_t 771pw_uidpolicy(struct userconf * cnf, struct cargs * args) 772{ 773 struct passwd *pwd; 774 uid_t uid = (uid_t) - 1; 775 struct carg *a_uid = getarg(args, 'u'); 776 777 /* 778 * Check the given uid, if any 779 */ 780 if (a_uid != NULL) { 781 uid = (uid_t) atol(a_uid->val); 782 783 if ((pwd = GETPWUID(uid)) != NULL && getarg(args, 'o') == NULL) 784 errx(EX_DATAERR, "uid `%u' has already been allocated", pwd->pw_uid); 785 } else { 786 struct bitmap bm; 787 788 /* 789 * We need to allocate the next available uid under one of 790 * two policies a) Grab the first unused uid b) Grab the 791 * highest possible unused uid 792 */ 793 if (cnf->min_uid >= cnf->max_uid) { /* Sanity 794 * claus^H^H^H^Hheck */ 795 cnf->min_uid = 1000; 796 cnf->max_uid = 32000; 797 } 798 bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1); 799 800 /* 801 * Now, let's fill the bitmap from the password file 802 */ 803 SETPWENT(); 804 while ((pwd = GETPWENT()) != NULL) 805 if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid) 806 bm_setbit(&bm, pwd->pw_uid - cnf->min_uid); 807 ENDPWENT(); 808 809 /* 810 * Then apply the policy, with fallback to reuse if necessary 811 */ 812 if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid) 813 uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid); 814 815 /* 816 * Another sanity check 817 */ 818 if (uid < cnf->min_uid || uid > cnf->max_uid) 819 errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used"); 820 bm_dealloc(&bm); 821 } 822 return uid; 823} 824 825 826static uid_t 827pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer) 828{ 829 struct group *grp; 830 gid_t gid = (uid_t) - 1; 831 struct carg *a_gid = getarg(args, 'g'); 832 833 /* 834 * If no arg given, see if default can help out 835 */ 836 if (a_gid == NULL && cnf->default_group && *cnf->default_group) 837 a_gid = addarg(args, 'g', cnf->default_group); 838 839 /* 840 * Check the given gid, if any 841 */ 842 SETGRENT(); 843 if (a_gid != NULL) { 844 if ((grp = GETGRNAM(a_gid->val)) == NULL) { 845 gid = (gid_t) atol(a_gid->val); 846 if ((gid == 0 && !isdigit((unsigned char)*a_gid->val)) || (grp = GETGRGID(gid)) == NULL) 847 errx(EX_NOUSER, "group `%s' is not defined", a_gid->val); 848 } 849 gid = grp->gr_gid; 850 } else if ((grp = GETGRNAM(nam)) != NULL && 851 (grp->gr_mem == NULL || grp->gr_mem[0] == NULL)) { 852 gid = grp->gr_gid; /* Already created? Use it anyway... */ 853 } else { 854 struct cargs grpargs; 855 char tmp[32]; 856 857 LIST_INIT(&grpargs); 858 addarg(&grpargs, 'n', nam); 859 860 /* 861 * We need to auto-create a group with the user's name. We 862 * can send all the appropriate output to our sister routine 863 * bit first see if we can create a group with gid==uid so we 864 * can keep the user and group ids in sync. We purposely do 865 * NOT check the gid range if we can force the sync. If the 866 * user's name dups an existing group, then the group add 867 * function will happily handle that case for us and exit. 868 */ 869 if (GETGRGID(prefer) == NULL) { 870 snprintf(tmp, sizeof(tmp), "%u", prefer); 871 addarg(&grpargs, 'g', tmp); 872 } 873 if (getarg(args, 'N')) 874 { 875 addarg(&grpargs, 'N', NULL); 876 addarg(&grpargs, 'q', NULL); 877 gid = pw_group(cnf, M_NEXT, &grpargs); 878 } 879 else 880 { 881 pw_group(cnf, M_ADD, &grpargs); 882 if ((grp = GETGRNAM(nam)) != NULL) 883 gid = grp->gr_gid; 884 } 885 a_gid = LIST_FIRST(&grpargs); 886 while (a_gid != NULL) { 887 struct carg *t = LIST_NEXT(a_gid, list); 888 LIST_REMOVE(a_gid, list); 889 a_gid = t; 890 } 891 } 892 ENDGRENT(); 893 return gid; 894} 895 896 897static time_t 898pw_pwdpolicy(struct userconf * cnf, struct cargs * args) 899{ 900 time_t result = 0; 901 time_t now = time(NULL); 902 struct carg *arg = getarg(args, 'p'); 903 904 if (arg != NULL) { 905 if ((result = parse_date(now, arg->val)) == now) 906 errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 907 } else if (cnf->password_days > 0) 908 result = now + ((long) cnf->password_days * 86400L); 909 return result; 910} 911 912 913static time_t 914pw_exppolicy(struct userconf * cnf, struct cargs * args) 915{ 916 time_t result = 0; 917 time_t now = time(NULL); 918 struct carg *arg = getarg(args, 'e'); 919 920 if (arg != NULL) { 921 if ((result = parse_date(now, arg->val)) == now) 922 errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 923 } else if (cnf->expire_days > 0) 924 result = now + ((long) cnf->expire_days * 86400L); 925 return result; 926} 927 928 929static char * 930pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user) 931{ 932 struct carg *arg = getarg(args, 'd'); 933 static char home[128]; 934 935 if (arg) 936 return (arg->val); 937 938 if (cnf->home == NULL || *cnf->home == '\0') 939 errx(EX_CONFIG, "no base home directory set"); 940 snprintf(home, sizeof(home), "%s/%s", cnf->home, user); 941 942 return (home); 943} 944 945static char * 946shell_path(char const * path, char *shells[], char *sh) 947{ 948 if (sh != NULL && (*sh == '/' || *sh == '\0')) 949 return sh; /* specified full path or forced none */ 950 else { 951 char *p; 952 char paths[_UC_MAXLINE]; 953 954 /* 955 * We need to search paths 956 */ 957 strlcpy(paths, path, sizeof(paths)); 958 for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) { 959 int i; 960 static char shellpath[256]; 961 962 if (sh != NULL) { 963 snprintf(shellpath, sizeof(shellpath), "%s/%s", p, sh); 964 if (access(shellpath, X_OK) == 0) 965 return shellpath; 966 } else 967 for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) { 968 snprintf(shellpath, sizeof(shellpath), "%s/%s", p, shells[i]); 969 if (access(shellpath, X_OK) == 0) 970 return shellpath; 971 } 972 } 973 if (sh == NULL) 974 errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh); 975 errx(EX_CONFIG, "no default shell available or defined"); 976 return NULL; 977 } 978} 979 980 981static char * 982pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell) 983{ 984 char *sh = newshell; 985 struct carg *arg = getarg(args, 's'); 986 987 if (newshell == NULL && arg != NULL) 988 sh = arg->val; 989 return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default); 990} 991 992#define SALTSIZE 32 993 994static char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./"; 995 996char * 997pw_pwcrypt(char *password) 998{ 999 int i; 1000 char salt[SALTSIZE + 1]; 1001 char *cryptpw; 1002 1003 static char buf[256]; 1004 1005 /* 1006 * Calculate a salt value 1007 */ 1008 for (i = 0; i < SALTSIZE; i++) 1009 salt[i] = chars[arc4random_uniform(sizeof(chars) - 1)]; 1010 salt[SALTSIZE] = '\0'; 1011 1012 cryptpw = crypt(password, salt); 1013 if (cryptpw == NULL) 1014 errx(EX_CONFIG, "crypt(3) failure"); 1015 return strcpy(buf, cryptpw); 1016} 1017 1018 1019static char * 1020pw_password(struct userconf * cnf, struct cargs * args, char const * user) 1021{ 1022 int i, l; 1023 char pwbuf[32]; 1024 1025 switch (cnf->default_password) { 1026 case -1: /* Random password */ 1027 l = (arc4random() % 8 + 8); /* 8 - 16 chars */ 1028 for (i = 0; i < l; i++) 1029 pwbuf[i] = chars[arc4random_uniform(sizeof(chars)-1)]; 1030 pwbuf[i] = '\0'; 1031 1032 /* 1033 * We give this information back to the user 1034 */ 1035 if (getarg(args, 'h') == NULL && getarg(args, 'H') == NULL && 1036 getarg(args, 'N') == NULL) { 1037 if (isatty(STDOUT_FILENO)) 1038 printf("Password for '%s' is: ", user); 1039 printf("%s\n", pwbuf); 1040 fflush(stdout); 1041 } 1042 break; 1043 1044 case -2: /* No password at all! */ 1045 return ""; 1046 1047 case 0: /* No login - default */ 1048 default: 1049 return "*"; 1050 1051 case 1: /* user's name */ 1052 strlcpy(pwbuf, user, sizeof(pwbuf)); 1053 break; 1054 } 1055 return pw_pwcrypt(pwbuf); 1056} 1057 1058static int 1059delete_user(struct userconf *cnf, struct passwd *pwd, struct carg *a_name, 1060 int delete, int mode) 1061{ 1062 char file[MAXPATHLEN]; 1063 char home[MAXPATHLEN]; 1064 uid_t uid = pwd->pw_uid; 1065 struct group *gr, *grp; 1066 char grname[LOGNAMESIZE]; 1067 int rc; 1068 struct stat st; 1069 1070 if (strcmp(pwd->pw_name, "root") == 0) 1071 errx(EX_DATAERR, "cannot remove user 'root'"); 1072 1073 if (!PWALTDIR()) { 1074 /* 1075 * Remove opie record from /etc/opiekeys 1076 */ 1077 1078 rmopie(pwd->pw_name); 1079 1080 /* 1081 * Remove crontabs 1082 */ 1083 snprintf(file, sizeof(file), "/var/cron/tabs/%s", pwd->pw_name); 1084 if (access(file, F_OK) == 0) { 1085 snprintf(file, sizeof(file), "crontab -u %s -r", pwd->pw_name); 1086 system(file); 1087 } 1088 } 1089 /* 1090 * Save these for later, since contents of pwd may be 1091 * invalidated by deletion 1092 */ 1093 snprintf(file, sizeof(file), "%s/%s", _PATH_MAILDIR, pwd->pw_name); 1094 strlcpy(home, pwd->pw_dir, sizeof(home)); 1095 gr = GETGRGID(pwd->pw_gid); 1096 if (gr != NULL) 1097 strlcpy(grname, gr->gr_name, LOGNAMESIZE); 1098 else 1099 grname[0] = '\0'; 1100 1101 rc = delpwent(pwd); 1102 if (rc == -1) 1103 err(EX_IOERR, "user '%s' does not exist", pwd->pw_name); 1104 else if (rc != 0) 1105 err(EX_IOERR, "passwd update"); 1106 1107 if (cnf->nispasswd && *cnf->nispasswd=='/') { 1108 rc = delnispwent(cnf->nispasswd, a_name->val); 1109 if (rc == -1) 1110 warnx("WARNING: user '%s' does not exist in NIS passwd", pwd->pw_name); 1111 else if (rc != 0) 1112 warn("WARNING: NIS passwd update"); 1113 /* non-fatal */ 1114 } 1115 1116 grp = GETGRNAM(a_name->val); 1117 if (grp != NULL && 1118 (grp->gr_mem == NULL || *grp->gr_mem == NULL) && 1119 strcmp(a_name->val, grname) == 0) 1120 delgrent(GETGRNAM(a_name->val)); 1121 SETGRENT(); 1122 while ((grp = GETGRENT()) != NULL) { 1123 int i, j; 1124 char group[MAXLOGNAME]; 1125 if (grp->gr_mem == NULL) 1126 continue; 1127 1128 for (i = 0; grp->gr_mem[i] != NULL; i++) { 1129 if (strcmp(grp->gr_mem[i], a_name->val)) 1130 continue; 1131 1132 for (j = i; grp->gr_mem[j] != NULL; j++) 1133 grp->gr_mem[j] = grp->gr_mem[j+1]; 1134 strlcpy(group, grp->gr_name, MAXLOGNAME); 1135 chggrent(group, grp); 1136 } 1137 } 1138 ENDGRENT(); 1139 1140 pw_log(cnf, mode, W_USER, "%s(%u) account removed", a_name->val, uid); 1141 1142 if (PWALTDIR()) { 1143 /* 1144 * Remove mail file 1145 */ 1146 remove(file); 1147 1148 /* 1149 * Remove at jobs 1150 */ 1151 if (getpwuid(uid) == NULL) 1152 rmat(uid); 1153 1154 /* 1155 * Remove home directory and contents 1156 */ 1157 if (delete && *home == '/' && getpwuid(uid) == NULL && 1158 stat(home, &st) != -1) { 1159 rm_r(home, uid); 1160 pw_log(cnf, mode, W_USER, "%s(%u) home '%s' %sremoved", 1161 a_name->val, uid, home, 1162 stat(home, &st) == -1 ? "" : "not completely "); 1163 } 1164 } 1165 1166 return (EXIT_SUCCESS); 1167} 1168 1169static int 1170print_user(struct passwd * pwd, int pretty, int v7) 1171{ 1172 if (!pretty) { 1173 char *buf; 1174 1175 if (!v7) 1176 pwd->pw_passwd = (pwd->pw_passwd == NULL) ? "" : "*"; 1177 1178 buf = v7 ? pw_make_v7(pwd) : pw_make(pwd); 1179 printf("%s\n", buf); 1180 free(buf); 1181 } else { 1182 int j; 1183 char *p; 1184 struct group *grp = GETGRGID(pwd->pw_gid); 1185 char uname[60] = "User &", office[60] = "[None]", 1186 wphone[60] = "[None]", hphone[60] = "[None]"; 1187 char acexpire[32] = "[None]", pwexpire[32] = "[None]"; 1188 struct tm * tptr; 1189 1190 if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { 1191 strlcpy(uname, p, sizeof(uname)); 1192 if ((p = strtok(NULL, ",")) != NULL) { 1193 strlcpy(office, p, sizeof(office)); 1194 if ((p = strtok(NULL, ",")) != NULL) { 1195 strlcpy(wphone, p, sizeof(wphone)); 1196 if ((p = strtok(NULL, "")) != NULL) { 1197 strlcpy(hphone, p, 1198 sizeof(hphone)); 1199 } 1200 } 1201 } 1202 } 1203 /* 1204 * Handle '&' in gecos field 1205 */ 1206 if ((p = strchr(uname, '&')) != NULL) { 1207 int l = strlen(pwd->pw_name); 1208 int m = strlen(p); 1209 1210 memmove(p + l, p + 1, m); 1211 memmove(p, pwd->pw_name, l); 1212 *p = (char) toupper((unsigned char)*p); 1213 } 1214 if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL) 1215 strftime(acexpire, sizeof acexpire, "%c", tptr); 1216 if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL) 1217 strftime(pwexpire, sizeof pwexpire, "%c", tptr); 1218 printf("Login Name: %-15s #%-12u Group: %-15s #%u\n" 1219 " Full Name: %s\n" 1220 " Home: %-26.26s Class: %s\n" 1221 " Shell: %-26.26s Office: %s\n" 1222 "Work Phone: %-26.26s Home Phone: %s\n" 1223 "Acc Expire: %-26.26s Pwd Expire: %s\n", 1224 pwd->pw_name, pwd->pw_uid, 1225 grp ? grp->gr_name : "(invalid)", pwd->pw_gid, 1226 uname, pwd->pw_dir, pwd->pw_class, 1227 pwd->pw_shell, office, wphone, hphone, 1228 acexpire, pwexpire); 1229 SETGRENT(); 1230 j = 0; 1231 while ((grp=GETGRENT()) != NULL) 1232 { 1233 int i = 0; 1234 if (grp->gr_mem != NULL) { 1235 while (grp->gr_mem[i] != NULL) 1236 { 1237 if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) 1238 { 1239 printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name); 1240 break; 1241 } 1242 ++i; 1243 } 1244 } 1245 } 1246 ENDGRENT(); 1247 printf("%s", j ? "\n" : ""); 1248 } 1249 return EXIT_SUCCESS; 1250} 1251 1252char * 1253pw_checkname(char *name, int gecos) 1254{ 1255 char showch[8]; 1256 const char *badchars, *ch, *showtype; 1257 int reject; 1258 1259 ch = name; 1260 reject = 0; 1261 if (gecos) { 1262 /* See if the name is valid as a gecos (comment) field. */ 1263 badchars = ":!@"; 1264 showtype = "gecos field"; 1265 } else { 1266 /* See if the name is valid as a userid or group. */ 1267 badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\""; 1268 showtype = "userid/group name"; 1269 /* Userids and groups can not have a leading '-'. */ 1270 if (*ch == '-') 1271 reject = 1; 1272 } 1273 if (!reject) { 1274 while (*ch) { 1275 if (strchr(badchars, *ch) != NULL || *ch < ' ' || 1276 *ch == 127) { 1277 reject = 1; 1278 break; 1279 } 1280 /* 8-bit characters are only allowed in GECOS fields */ 1281 if (!gecos && (*ch & 0x80)) { 1282 reject = 1; 1283 break; 1284 } 1285 ch++; 1286 } 1287 } 1288 /* 1289 * A `$' is allowed as the final character for userids and groups, 1290 * mainly for the benefit of samba. 1291 */ 1292 if (reject && !gecos) { 1293 if (*ch == '$' && *(ch + 1) == '\0') { 1294 reject = 0; 1295 ch++; 1296 } 1297 } 1298 if (reject) { 1299 snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127) 1300 ? "`%c'" : "0x%02x", *ch); 1301 errx(EX_DATAERR, "invalid character %s at position %td in %s", 1302 showch, (ch - name), showtype); 1303 } 1304 if (!gecos && (ch - name) > LOGNAMESIZE) 1305 errx(EX_DATAERR, "name too long `%s' (max is %d)", name, 1306 LOGNAMESIZE); 1307 1308 return (name); 1309} 1310 1311 1312static void 1313rmat(uid_t uid) 1314{ 1315 DIR *d = opendir("/var/at/jobs"); 1316 1317 if (d != NULL) { 1318 struct dirent *e; 1319 1320 while ((e = readdir(d)) != NULL) { 1321 struct stat st; 1322 1323 if (strncmp(e->d_name, ".lock", 5) != 0 && 1324 stat(e->d_name, &st) == 0 && 1325 !S_ISDIR(st.st_mode) && 1326 st.st_uid == uid) { 1327 char tmp[MAXPATHLEN]; 1328 1329 snprintf(tmp, sizeof(tmp), "/usr/bin/atrm %s", e->d_name); 1330 system(tmp); 1331 } 1332 } 1333 closedir(d); 1334 } 1335} 1336 1337static void 1338rmopie(char const * name) 1339{ 1340 static const char etcopie[] = "/etc/opiekeys"; 1341 FILE *fp = fopen(etcopie, "r+"); 1342 1343 if (fp != NULL) { 1344 char tmp[1024]; 1345 off_t atofs = 0; 1346 int length = strlen(name); 1347 1348 while (fgets(tmp, sizeof tmp, fp) != NULL) { 1349 if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') { 1350 if (fseek(fp, atofs, SEEK_SET) == 0) { 1351 fwrite("#", 1, 1, fp); /* Comment username out */ 1352 } 1353 break; 1354 } 1355 atofs = ftell(fp); 1356 } 1357 /* 1358 * If we got an error of any sort, don't update! 1359 */ 1360 fclose(fp); 1361 } 1362} 1363 1364