pw_user.c revision 283961
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 283961 2015-06-03 19:08:25Z 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 print_user(struct passwd * pwd, int pretty, int v7); 55static uid_t pw_uidpolicy(struct userconf * cnf, struct cargs * args); 56static uid_t pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer); 57static time_t pw_pwdpolicy(struct userconf * cnf, struct cargs * args); 58static time_t pw_exppolicy(struct userconf * cnf, struct cargs * args); 59static char *pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user); 60static char *pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell); 61static char *pw_password(struct userconf * cnf, struct cargs * args, char const * user); 62static char *shell_path(char const * path, char *shells[], char *sh); 63static void rmat(uid_t uid); 64static void rmopie(char const * name); 65 66static void 67create_and_populate_homedir(int mode, struct cargs *args, struct passwd *pwd, 68 struct userconf *cnf) 69{ 70 char *homedir, *dotdir; 71 struct carg *arg; 72 73 homedir = dotdir = NULL; 74 75 if ((arg = getarg(args, 'R'))) { 76 asprintf(&homedir, "%s/%s", arg->val, pwd->pw_dir); 77 if (homedir == NULL) 78 errx(EX_OSERR, "out of memory"); 79 asprintf(&dotdir, "%s/%s", arg->val, cnf->dotdir); 80 } 81 82 copymkdir(homedir ? homedir : pwd->pw_dir, dotdir ? dotdir: cnf->dotdir, 83 cnf->homemode, pwd->pw_uid, pwd->pw_gid); 84 pw_log(cnf, mode, W_USER, "%s(%u) home %s made", pwd->pw_name, 85 pwd->pw_uid, pwd->pw_dir); 86} 87 88/*- 89 * -C config configuration file 90 * -q quiet operation 91 * -n name login name 92 * -u uid user id 93 * -c comment user name/comment 94 * -d directory home directory 95 * -e date account expiry date 96 * -p date password expiry date 97 * -g grp primary group 98 * -G grp1,grp2 additional groups 99 * -m [ -k dir ] create and set up home 100 * -s shell name of login shell 101 * -o duplicate uid ok 102 * -L class user class 103 * -l name new login name 104 * -h fd password filehandle 105 * -H fd encrypted password filehandle 106 * -F force print or add 107 * Setting defaults: 108 * -D set user defaults 109 * -b dir default home root dir 110 * -e period default expiry period 111 * -p period default password change period 112 * -g group default group 113 * -G grp1,grp2.. default additional groups 114 * -L class default login class 115 * -k dir default home skeleton 116 * -s shell default shell 117 * -w method default password method 118 */ 119 120int 121pw_user(struct userconf * cnf, int mode, struct cargs * args) 122{ 123 int rc, edited = 0; 124 char *p = NULL; 125 char *passtmp; 126 struct carg *a_name; 127 struct carg *a_uid; 128 struct carg *arg; 129 struct passwd *pwd = NULL; 130 struct group *grp; 131 struct stat st; 132 char line[_PASSWORD_LEN+1]; 133 char path[MAXPATHLEN]; 134 FILE *fp; 135 char *dmode_c; 136 void *set = NULL; 137 138 static struct passwd fakeuser = 139 { 140 NULL, 141 "*", 142 -1, 143 -1, 144 0, 145 "", 146 "User &", 147 "/nonexistent", 148 "/bin/sh", 149 0 150#if defined(__FreeBSD__) 151 ,0 152#endif 153 }; 154 155 156 /* 157 * With M_NEXT, we only need to return the 158 * next uid to stdout 159 */ 160 if (mode == M_NEXT) 161 { 162 uid_t next = pw_uidpolicy(cnf, args); 163 if (getarg(args, 'q')) 164 return next; 165 printf("%u:", next); 166 pw_group(cnf, mode, args); 167 return EXIT_SUCCESS; 168 } 169 170 /* 171 * We can do all of the common legwork here 172 */ 173 174 if ((arg = getarg(args, 'b')) != NULL) { 175 cnf->home = arg->val; 176 } 177 178 if ((arg = getarg(args, 'M')) != NULL) { 179 dmode_c = arg->val; 180 if ((set = setmode(dmode_c)) == NULL) 181 errx(EX_DATAERR, "invalid directory creation mode '%s'", 182 dmode_c); 183 cnf->homemode = getmode(set, _DEF_DIRMODE); 184 free(set); 185 } 186 187 /* 188 * If we'll need to use it or we're updating it, 189 * then create the base home directory if necessary 190 */ 191 if (arg != NULL || getarg(args, 'm') != NULL) { 192 int l = strlen(cnf->home); 193 194 if (l > 1 && cnf->home[l-1] == '/') /* Shave off any trailing path delimiter */ 195 cnf->home[--l] = '\0'; 196 197 if (l < 2 || *cnf->home != '/') /* Check for absolute path name */ 198 errx(EX_DATAERR, "invalid base directory for home '%s'", cnf->home); 199 200 if (stat(cnf->home, &st) == -1) { 201 char dbuf[MAXPATHLEN]; 202 203 /* 204 * This is a kludge especially for Joerg :) 205 * If the home directory would be created in the root partition, then 206 * we really create it under /usr which is likely to have more space. 207 * But we create a symlink from cnf->home -> "/usr" -> cnf->home 208 */ 209 if (strchr(cnf->home+1, '/') == NULL) { 210 snprintf(dbuf, MAXPATHLEN, "/usr%s", cnf->home); 211 if (mkdir(dbuf, _DEF_DIRMODE) != -1 || errno == EEXIST) { 212 chown(dbuf, 0, 0); 213 /* 214 * Skip first "/" and create symlink: 215 * /home -> usr/home 216 */ 217 symlink(dbuf+1, cnf->home); 218 } 219 /* If this falls, fall back to old method */ 220 } 221 strlcpy(dbuf, cnf->home, sizeof(dbuf)); 222 p = dbuf; 223 if (stat(dbuf, &st) == -1) { 224 while ((p = strchr(p + 1, '/')) != NULL) { 225 *p = '\0'; 226 if (stat(dbuf, &st) == -1) { 227 if (mkdir(dbuf, _DEF_DIRMODE) == -1) 228 goto direrr; 229 chown(dbuf, 0, 0); 230 } else if (!S_ISDIR(st.st_mode)) 231 errx(EX_OSFILE, "'%s' (root home parent) is not a directory", dbuf); 232 *p = '/'; 233 } 234 } 235 if (stat(dbuf, &st) == -1) { 236 if (mkdir(dbuf, _DEF_DIRMODE) == -1) { 237 direrr: err(EX_OSFILE, "mkdir '%s'", dbuf); 238 } 239 chown(dbuf, 0, 0); 240 } 241 } else if (!S_ISDIR(st.st_mode)) 242 errx(EX_OSFILE, "root home `%s' is not a directory", cnf->home); 243 } 244 245 if ((arg = getarg(args, 'e')) != NULL) 246 cnf->expire_days = atoi(arg->val); 247 248 if ((arg = getarg(args, 'y')) != NULL) 249 cnf->nispasswd = arg->val; 250 251 if ((arg = getarg(args, 'p')) != NULL && arg->val) 252 cnf->password_days = atoi(arg->val); 253 254 if ((arg = getarg(args, 'g')) != NULL) { 255 if (!*(p = arg->val)) /* Handle empty group list specially */ 256 cnf->default_group = ""; 257 else { 258 if ((grp = GETGRNAM(p)) == NULL) { 259 if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 260 errx(EX_NOUSER, "group `%s' does not exist", p); 261 } 262 cnf->default_group = newstr(grp->gr_name); 263 } 264 } 265 if ((arg = getarg(args, 'L')) != NULL) 266 cnf->default_class = pw_checkname((u_char *)arg->val, 0); 267 268 if ((arg = getarg(args, 'G')) != NULL && arg->val) { 269 int i = 0; 270 271 for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) { 272 if ((grp = GETGRNAM(p)) == NULL) { 273 if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 274 errx(EX_NOUSER, "group `%s' does not exist", p); 275 } 276 if (extendarray(&cnf->groups, &cnf->numgroups, i + 2) != -1) 277 cnf->groups[i++] = newstr(grp->gr_name); 278 } 279 while (i < cnf->numgroups) 280 cnf->groups[i++] = NULL; 281 } 282 283 if ((arg = getarg(args, 'k')) != NULL) { 284 if (stat(cnf->dotdir = arg->val, &st) == -1 || !S_ISDIR(st.st_mode)) 285 errx(EX_OSFILE, "skeleton `%s' is not a directory or does not exist", cnf->dotdir); 286 } 287 288 if ((arg = getarg(args, 's')) != NULL) 289 cnf->shell_default = arg->val; 290 291 if ((arg = getarg(args, 'w')) != NULL) 292 cnf->default_password = boolean_val(arg->val, cnf->default_password); 293 if (mode == M_ADD && getarg(args, 'D')) { 294 if (getarg(args, 'n') != NULL) 295 errx(EX_DATAERR, "can't combine `-D' with `-n name'"); 296 if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 297 if ((cnf->min_uid = (uid_t) atoi(p)) == 0) 298 cnf->min_uid = 1000; 299 if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid) 300 cnf->max_uid = 32000; 301 } 302 if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 303 if ((cnf->min_gid = (gid_t) atoi(p)) == 0) 304 cnf->min_gid = 1000; 305 if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid) 306 cnf->max_gid = 32000; 307 } 308 309 arg = getarg(args, 'C'); 310 if (write_userconfig(arg ? arg->val : NULL)) 311 return EXIT_SUCCESS; 312 err(EX_IOERR, "config udpate"); 313 } 314 315 if (mode == M_PRINT && getarg(args, 'a')) { 316 int pretty = getarg(args, 'P') != NULL; 317 int v7 = getarg(args, '7') != NULL; 318 SETPWENT(); 319 while ((pwd = GETPWENT()) != NULL) 320 print_user(pwd, pretty, v7); 321 ENDPWENT(); 322 return EXIT_SUCCESS; 323 } 324 325 if ((a_name = getarg(args, 'n')) != NULL) 326 pwd = GETPWNAM(pw_checkname((u_char *)a_name->val, 0)); 327 a_uid = getarg(args, 'u'); 328 329 if (a_uid == NULL) { 330 if (a_name == NULL) 331 errx(EX_DATAERR, "user name or id required"); 332 333 /* 334 * Determine whether 'n' switch is name or uid - we don't 335 * really don't really care which we have, but we need to 336 * know. 337 */ 338 if (mode != M_ADD && pwd == NULL 339 && strspn(a_name->val, "0123456789") == strlen(a_name->val) 340 && *a_name->val) { 341 (a_uid = a_name)->ch = 'u'; 342 a_name = NULL; 343 } 344 } else { 345 if (strspn(a_uid->val, "0123456789") != strlen(a_uid->val)) 346 errx(EX_USAGE, "-u expects a number"); 347 } 348 349 /* 350 * Update, delete & print require that the user exists 351 */ 352 if (mode == M_UPDATE || mode == M_DELETE || 353 mode == M_PRINT || mode == M_LOCK || mode == M_UNLOCK) { 354 355 if (a_name == NULL && pwd == NULL) /* Try harder */ 356 pwd = GETPWUID(atoi(a_uid->val)); 357 358 if (pwd == NULL) { 359 if (mode == M_PRINT && getarg(args, 'F')) { 360 fakeuser.pw_name = a_name ? a_name->val : "nouser"; 361 fakeuser.pw_uid = a_uid ? (uid_t) atol(a_uid->val) : (uid_t) -1; 362 return print_user(&fakeuser, 363 getarg(args, 'P') != NULL, 364 getarg(args, '7') != NULL); 365 } 366 if (a_name == NULL) 367 errx(EX_NOUSER, "no such uid `%s'", a_uid->val); 368 errx(EX_NOUSER, "no such user `%s'", a_name->val); 369 } 370 371 if (a_name == NULL) /* May be needed later */ 372 a_name = addarg(args, 'n', newstr(pwd->pw_name)); 373 374 /* 375 * The M_LOCK and M_UNLOCK functions simply add or remove 376 * a "*LOCKED*" prefix from in front of the password to 377 * prevent it decoding correctly, and therefore prevents 378 * access. Of course, this only prevents access via 379 * password authentication (not ssh, kerberos or any 380 * other method that does not use the UNIX password) but 381 * that is a known limitation. 382 */ 383 384 if (mode == M_LOCK) { 385 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) == 0) 386 errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name); 387 asprintf(&passtmp, "%s%s", locked_str, pwd->pw_passwd); 388 if (passtmp == NULL) /* disaster */ 389 errx(EX_UNAVAILABLE, "out of memory"); 390 pwd->pw_passwd = passtmp; 391 edited = 1; 392 } else if (mode == M_UNLOCK) { 393 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) != 0) 394 errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name); 395 pwd->pw_passwd += sizeof(locked_str)-1; 396 edited = 1; 397 } else if (mode == M_DELETE) { 398 /* 399 * Handle deletions now 400 */ 401 char file[MAXPATHLEN]; 402 char home[MAXPATHLEN]; 403 uid_t uid = pwd->pw_uid; 404 struct group *gr; 405 char grname[LOGNAMESIZE]; 406 407 if (strcmp(pwd->pw_name, "root") == 0) 408 errx(EX_DATAERR, "cannot remove user 'root'"); 409 410 if (!PWALTDIR()) { 411 /* 412 * Remove opie record from /etc/opiekeys 413 */ 414 415 rmopie(pwd->pw_name); 416 417 /* 418 * Remove crontabs 419 */ 420 snprintf(file, sizeof(file), "/var/cron/tabs/%s", pwd->pw_name); 421 if (access(file, F_OK) == 0) { 422 snprintf(file, sizeof(file), "crontab -u %s -r", pwd->pw_name); 423 system(file); 424 } 425 } 426 /* 427 * Save these for later, since contents of pwd may be 428 * invalidated by deletion 429 */ 430 snprintf(file, sizeof(file), "%s/%s", _PATH_MAILDIR, pwd->pw_name); 431 strlcpy(home, pwd->pw_dir, sizeof(home)); 432 gr = GETGRGID(pwd->pw_gid); 433 if (gr != NULL) 434 strlcpy(grname, gr->gr_name, LOGNAMESIZE); 435 else 436 grname[0] = '\0'; 437 438 rc = delpwent(pwd); 439 if (rc == -1) 440 err(EX_IOERR, "user '%s' does not exist", pwd->pw_name); 441 else if (rc != 0) 442 err(EX_IOERR, "passwd update"); 443 444 if (cnf->nispasswd && *cnf->nispasswd=='/') { 445 rc = delnispwent(cnf->nispasswd, a_name->val); 446 if (rc == -1) 447 warnx("WARNING: user '%s' does not exist in NIS passwd", pwd->pw_name); 448 else if (rc != 0) 449 warn("WARNING: NIS passwd update"); 450 /* non-fatal */ 451 } 452 453 grp = GETGRNAM(a_name->val); 454 if (grp != NULL && 455 (grp->gr_mem == NULL || *grp->gr_mem == NULL) && 456 strcmp(a_name->val, grname) == 0) 457 delgrent(GETGRNAM(a_name->val)); 458 SETGRENT(); 459 while ((grp = GETGRENT()) != NULL) { 460 int i, j; 461 char group[MAXLOGNAME]; 462 if (grp->gr_mem != NULL) { 463 for (i = 0; grp->gr_mem[i] != NULL; i++) { 464 if (!strcmp(grp->gr_mem[i], a_name->val)) { 465 for (j = i; grp->gr_mem[j] != NULL; j++) 466 grp->gr_mem[j] = grp->gr_mem[j+1]; 467 strlcpy(group, grp->gr_name, MAXLOGNAME); 468 chggrent(group, grp); 469 } 470 } 471 } 472 } 473 ENDGRENT(); 474 475 pw_log(cnf, mode, W_USER, "%s(%u) account removed", a_name->val, uid); 476 477 if (PWALTDIR()) { 478 /* 479 * Remove mail file 480 */ 481 remove(file); 482 483 /* 484 * Remove at jobs 485 */ 486 if (getpwuid(uid) == NULL) 487 rmat(uid); 488 489 /* 490 * Remove home directory and contents 491 */ 492 if (getarg(args, 'r') != NULL && *home == '/' && getpwuid(uid) == NULL) { 493 if (stat(home, &st) != -1) { 494 rm_r(home, uid); 495 pw_log(cnf, mode, W_USER, "%s(%u) home '%s' %sremoved", 496 a_name->val, uid, home, 497 stat(home, &st) == -1 ? "" : "not completely "); 498 } 499 } 500 } 501 return EXIT_SUCCESS; 502 } else if (mode == M_PRINT) 503 return print_user(pwd, 504 getarg(args, 'P') != NULL, 505 getarg(args, '7') != NULL); 506 507 /* 508 * The rest is edit code 509 */ 510 if ((arg = getarg(args, 'l')) != NULL) { 511 if (strcmp(pwd->pw_name, "root") == 0) 512 errx(EX_DATAERR, "can't rename `root' account"); 513 pwd->pw_name = pw_checkname((u_char *)arg->val, 0); 514 edited = 1; 515 } 516 517 if ((arg = getarg(args, 'u')) != NULL && isdigit((unsigned char)*arg->val)) { 518 pwd->pw_uid = (uid_t) atol(arg->val); 519 edited = 1; 520 if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) 521 errx(EX_DATAERR, "can't change uid of `root' account"); 522 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 523 warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name); 524 } 525 526 if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) { /* Already checked this */ 527 gid_t newgid = (gid_t) GETGRNAM(cnf->default_group)->gr_gid; 528 if (newgid != pwd->pw_gid) { 529 edited = 1; 530 pwd->pw_gid = newgid; 531 } 532 } 533 534 if ((arg = getarg(args, 'p')) != NULL) { 535 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 536 if (pwd->pw_change != 0) { 537 pwd->pw_change = 0; 538 edited = 1; 539 } 540 } 541 else { 542 time_t now = time(NULL); 543 time_t expire = parse_date(now, arg->val); 544 545 if (pwd->pw_change != expire) { 546 pwd->pw_change = expire; 547 edited = 1; 548 } 549 } 550 } 551 552 if ((arg = getarg(args, 'e')) != NULL) { 553 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 554 if (pwd->pw_expire != 0) { 555 pwd->pw_expire = 0; 556 edited = 1; 557 } 558 } 559 else { 560 time_t now = time(NULL); 561 time_t expire = parse_date(now, arg->val); 562 563 if (pwd->pw_expire != expire) { 564 pwd->pw_expire = expire; 565 edited = 1; 566 } 567 } 568 } 569 570 if ((arg = getarg(args, 's')) != NULL) { 571 char *shell = shell_path(cnf->shelldir, cnf->shells, arg->val); 572 if (shell == NULL) 573 shell = ""; 574 if (strcmp(shell, pwd->pw_shell) != 0) { 575 pwd->pw_shell = shell; 576 edited = 1; 577 } 578 } 579 580 if (getarg(args, 'L')) { 581 if (cnf->default_class == NULL) 582 cnf->default_class = ""; 583 if (strcmp(pwd->pw_class, cnf->default_class) != 0) { 584 pwd->pw_class = cnf->default_class; 585 edited = 1; 586 } 587 } 588 589 if ((arg = getarg(args, 'd')) != NULL) { 590 if (strcmp(pwd->pw_dir, arg->val)) 591 edited = 1; 592 if (stat(pwd->pw_dir = arg->val, &st) == -1) { 593 if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0) 594 warnx("WARNING: home `%s' does not exist", pwd->pw_dir); 595 } else if (!S_ISDIR(st.st_mode)) 596 warnx("WARNING: home `%s' is not a directory", pwd->pw_dir); 597 } 598 599 if ((arg = getarg(args, 'w')) != NULL && 600 getarg(args, 'h') == NULL && getarg(args, 'H') == NULL) { 601 login_cap_t *lc; 602 603 lc = login_getpwclass(pwd); 604 if (lc == NULL || 605 login_setcryptfmt(lc, "sha512", NULL) == NULL) 606 warn("setting crypt(3) format"); 607 login_close(lc); 608 pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 609 edited = 1; 610 } 611 612 } else { 613 login_cap_t *lc; 614 615 /* 616 * Add code 617 */ 618 619 if (a_name == NULL) /* Required */ 620 errx(EX_DATAERR, "login name required"); 621 else if ((pwd = GETPWNAM(a_name->val)) != NULL) /* Exists */ 622 errx(EX_DATAERR, "login name `%s' already exists", a_name->val); 623 624 /* 625 * Now, set up defaults for a new user 626 */ 627 pwd = &fakeuser; 628 pwd->pw_name = a_name->val; 629 pwd->pw_class = cnf->default_class ? cnf->default_class : ""; 630 pwd->pw_uid = pw_uidpolicy(cnf, args); 631 pwd->pw_gid = pw_gidpolicy(cnf, args, pwd->pw_name, (gid_t) pwd->pw_uid); 632 pwd->pw_change = pw_pwdpolicy(cnf, args); 633 pwd->pw_expire = pw_exppolicy(cnf, args); 634 pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name); 635 pwd->pw_shell = pw_shellpolicy(cnf, args, NULL); 636 lc = login_getpwclass(pwd); 637 if (lc == NULL || login_setcryptfmt(lc, "sha512", NULL) == NULL) 638 warn("setting crypt(3) format"); 639 login_close(lc); 640 pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 641 edited = 1; 642 643 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 644 warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name); 645 } 646 647 /* 648 * Shared add/edit code 649 */ 650 if ((arg = getarg(args, 'c')) != NULL) { 651 char *gecos = pw_checkname((u_char *)arg->val, 1); 652 if (strcmp(pwd->pw_gecos, gecos) != 0) { 653 pwd->pw_gecos = gecos; 654 edited = 1; 655 } 656 } 657 658 if ((arg = getarg(args, 'h')) != NULL || 659 (arg = getarg(args, 'H')) != NULL) { 660 if (strcmp(arg->val, "-") == 0) { 661 if (!pwd->pw_passwd || *pwd->pw_passwd != '*') { 662 pwd->pw_passwd = "*"; /* No access */ 663 edited = 1; 664 } 665 } else { 666 int fd = atoi(arg->val); 667 int precrypt = (arg->ch == 'H'); 668 int b; 669 int istty = isatty(fd); 670 struct termios t; 671 login_cap_t *lc; 672 673 if (istty) { 674 if (tcgetattr(fd, &t) == -1) 675 istty = 0; 676 else { 677 struct termios n = t; 678 679 /* Disable echo */ 680 n.c_lflag &= ~(ECHO); 681 tcsetattr(fd, TCSANOW, &n); 682 printf("%s%spassword for user %s:", 683 (mode == M_UPDATE) ? "new " : "", 684 precrypt ? "encrypted " : "", 685 pwd->pw_name); 686 fflush(stdout); 687 } 688 } 689 b = read(fd, line, sizeof(line) - 1); 690 if (istty) { /* Restore state */ 691 tcsetattr(fd, TCSANOW, &t); 692 fputc('\n', stdout); 693 fflush(stdout); 694 } 695 if (b < 0) 696 err(EX_IOERR, "-%c file descriptor", 697 precrypt ? 'H' : 'h'); 698 line[b] = '\0'; 699 if ((p = strpbrk(line, "\r\n")) != NULL) 700 *p = '\0'; 701 if (!*line) 702 errx(EX_DATAERR, "empty password read on file descriptor %d", fd); 703 if (precrypt) { 704 if (strchr(line, ':') != NULL) 705 return EX_DATAERR; 706 pwd->pw_passwd = line; 707 } else { 708 lc = login_getpwclass(pwd); 709 if (lc == NULL || 710 login_setcryptfmt(lc, "sha512", NULL) == NULL) 711 warn("setting crypt(3) format"); 712 login_close(lc); 713 pwd->pw_passwd = pw_pwcrypt(line); 714 } 715 edited = 1; 716 } 717 } 718 719 /* 720 * Special case: -N only displays & exits 721 */ 722 if (getarg(args, 'N') != NULL) 723 return print_user(pwd, 724 getarg(args, 'P') != NULL, 725 getarg(args, '7') != NULL); 726 727 if (mode == M_ADD) { 728 edited = 1; /* Always */ 729 rc = addpwent(pwd); 730 if (rc == -1) 731 errx(EX_IOERR, "user '%s' already exists", 732 pwd->pw_name); 733 else if (rc != 0) 734 err(EX_IOERR, "passwd file update"); 735 if (cnf->nispasswd && *cnf->nispasswd=='/') { 736 rc = addnispwent(cnf->nispasswd, pwd); 737 if (rc == -1) 738 warnx("User '%s' already exists in NIS passwd", pwd->pw_name); 739 else 740 warn("NIS passwd update"); 741 /* NOTE: we treat NIS-only update errors as non-fatal */ 742 } 743 } else if (mode == M_UPDATE || mode == M_LOCK || mode == M_UNLOCK) { 744 if (edited) { /* Only updated this if required */ 745 rc = chgpwent(a_name->val, pwd); 746 if (rc == -1) 747 errx(EX_IOERR, "user '%s' does not exist (NIS?)", pwd->pw_name); 748 else if (rc != 0) 749 err(EX_IOERR, "passwd file update"); 750 if ( cnf->nispasswd && *cnf->nispasswd=='/') { 751 rc = chgnispwent(cnf->nispasswd, a_name->val, pwd); 752 if (rc == -1) 753 warn("User '%s' not found in NIS passwd", pwd->pw_name); 754 else 755 warn("NIS passwd update"); 756 /* NOTE: NIS-only update errors are not fatal */ 757 } 758 } 759 } 760 761 /* 762 * Ok, user is created or changed - now edit group file 763 */ 764 765 if (mode == M_ADD || getarg(args, 'G') != NULL) { 766 int i, j; 767 /* First remove the user from all group */ 768 SETGRENT(); 769 while ((grp = GETGRENT()) != NULL) { 770 char group[MAXLOGNAME]; 771 if (grp->gr_mem == NULL) 772 continue; 773 for (i = 0; grp->gr_mem[i] != NULL; i++) { 774 if (strcmp(grp->gr_mem[i] , pwd->pw_name) != 0) 775 continue; 776 for (j = i; grp->gr_mem[j] != NULL ; j++) 777 grp->gr_mem[j] = grp->gr_mem[j+1]; 778 strlcpy(group, grp->gr_name, MAXLOGNAME); 779 chggrent(group, grp); 780 } 781 } 782 ENDGRENT(); 783 784 /* now add to group where needed */ 785 for (i = 0; cnf->groups[i] != NULL; i++) { 786 grp = GETGRNAM(cnf->groups[i]); 787 grp = gr_add(grp, pwd->pw_name); 788 /* 789 * grp can only be NULL in 2 cases: 790 * - the new member is already a member 791 * - a problem with memory occurs 792 * in both cases we want to skip now. 793 */ 794 if (grp == NULL) 795 continue; 796 chggrent(cnf->groups[i], grp); 797 free(grp); 798 } 799 } 800 801 802 /* go get a current version of pwd */ 803 pwd = GETPWNAM(a_name->val); 804 if (pwd == NULL) { 805 /* This will fail when we rename, so special case that */ 806 if (mode == M_UPDATE && (arg = getarg(args, 'l')) != NULL) { 807 a_name->val = arg->val; /* update new name */ 808 pwd = GETPWNAM(a_name->val); /* refetch renamed rec */ 809 } 810 } 811 if (pwd == NULL) /* can't go on without this */ 812 errx(EX_NOUSER, "user '%s' disappeared during update", a_name->val); 813 814 grp = GETGRGID(pwd->pw_gid); 815 pw_log(cnf, mode, W_USER, "%s(%u):%s(%u):%s:%s:%s", 816 pwd->pw_name, pwd->pw_uid, 817 grp ? grp->gr_name : "unknown", (grp ? grp->gr_gid : (uid_t)-1), 818 pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 819 820 /* 821 * If adding, let's touch and chown the user's mail file. This is not 822 * strictly necessary under BSD with a 0755 maildir but it also 823 * doesn't hurt anything to create the empty mailfile 824 */ 825 if (mode == M_ADD) { 826 if (PWALTDIR() != PWF_ALT) { 827 arg = getarg(args, 'R'); 828 snprintf(path, sizeof(path), "%s%s/%s", 829 arg ? arg->val : "", _PATH_MAILDIR, pwd->pw_name); 830 close(open(path, O_RDWR | O_CREAT, 0600)); /* Preserve contents & 831 * mtime */ 832 chown(path, pwd->pw_uid, pwd->pw_gid); 833 } 834 } 835 836 /* 837 * Let's create and populate the user's home directory. Note 838 * that this also `works' for editing users if -m is used, but 839 * existing files will *not* be overwritten. 840 */ 841 if (PWALTDIR() != PWF_ALT && getarg(args, 'm') != NULL && pwd->pw_dir && 842 *pwd->pw_dir == '/' && pwd->pw_dir[1]) 843 create_and_populate_homedir(mode, args, pwd, cnf); 844 845 /* 846 * Finally, send mail to the new user as well, if we are asked to 847 */ 848 if (mode == M_ADD && !PWALTDIR() && cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) { 849 FILE *pfp = popen(_PATH_SENDMAIL " -t", "w"); 850 851 if (pfp == NULL) 852 warn("sendmail"); 853 else { 854 fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name); 855 while (fgets(line, sizeof(line), fp) != NULL) { 856 /* Do substitutions? */ 857 fputs(line, pfp); 858 } 859 pclose(pfp); 860 pw_log(cnf, mode, W_USER, "%s(%u) new user mail sent", 861 pwd->pw_name, pwd->pw_uid); 862 } 863 fclose(fp); 864 } 865 866 return EXIT_SUCCESS; 867} 868 869 870static uid_t 871pw_uidpolicy(struct userconf * cnf, struct cargs * args) 872{ 873 struct passwd *pwd; 874 uid_t uid = (uid_t) - 1; 875 struct carg *a_uid = getarg(args, 'u'); 876 877 /* 878 * Check the given uid, if any 879 */ 880 if (a_uid != NULL) { 881 uid = (uid_t) atol(a_uid->val); 882 883 if ((pwd = GETPWUID(uid)) != NULL && getarg(args, 'o') == NULL) 884 errx(EX_DATAERR, "uid `%u' has already been allocated", pwd->pw_uid); 885 } else { 886 struct bitmap bm; 887 888 /* 889 * We need to allocate the next available uid under one of 890 * two policies a) Grab the first unused uid b) Grab the 891 * highest possible unused uid 892 */ 893 if (cnf->min_uid >= cnf->max_uid) { /* Sanity 894 * claus^H^H^H^Hheck */ 895 cnf->min_uid = 1000; 896 cnf->max_uid = 32000; 897 } 898 bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1); 899 900 /* 901 * Now, let's fill the bitmap from the password file 902 */ 903 SETPWENT(); 904 while ((pwd = GETPWENT()) != NULL) 905 if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid) 906 bm_setbit(&bm, pwd->pw_uid - cnf->min_uid); 907 ENDPWENT(); 908 909 /* 910 * Then apply the policy, with fallback to reuse if necessary 911 */ 912 if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid) 913 uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid); 914 915 /* 916 * Another sanity check 917 */ 918 if (uid < cnf->min_uid || uid > cnf->max_uid) 919 errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used"); 920 bm_dealloc(&bm); 921 } 922 return uid; 923} 924 925 926static uid_t 927pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer) 928{ 929 struct group *grp; 930 gid_t gid = (uid_t) - 1; 931 struct carg *a_gid = getarg(args, 'g'); 932 933 /* 934 * If no arg given, see if default can help out 935 */ 936 if (a_gid == NULL && cnf->default_group && *cnf->default_group) 937 a_gid = addarg(args, 'g', cnf->default_group); 938 939 /* 940 * Check the given gid, if any 941 */ 942 SETGRENT(); 943 if (a_gid != NULL) { 944 if ((grp = GETGRNAM(a_gid->val)) == NULL) { 945 gid = (gid_t) atol(a_gid->val); 946 if ((gid == 0 && !isdigit((unsigned char)*a_gid->val)) || (grp = GETGRGID(gid)) == NULL) 947 errx(EX_NOUSER, "group `%s' is not defined", a_gid->val); 948 } 949 gid = grp->gr_gid; 950 } else if ((grp = GETGRNAM(nam)) != NULL && 951 (grp->gr_mem == NULL || grp->gr_mem[0] == NULL)) { 952 gid = grp->gr_gid; /* Already created? Use it anyway... */ 953 } else { 954 struct cargs grpargs; 955 char tmp[32]; 956 957 LIST_INIT(&grpargs); 958 addarg(&grpargs, 'n', nam); 959 960 /* 961 * We need to auto-create a group with the user's name. We 962 * can send all the appropriate output to our sister routine 963 * bit first see if we can create a group with gid==uid so we 964 * can keep the user and group ids in sync. We purposely do 965 * NOT check the gid range if we can force the sync. If the 966 * user's name dups an existing group, then the group add 967 * function will happily handle that case for us and exit. 968 */ 969 if (GETGRGID(prefer) == NULL) { 970 snprintf(tmp, sizeof(tmp), "%u", prefer); 971 addarg(&grpargs, 'g', tmp); 972 } 973 if (getarg(args, 'N')) 974 { 975 addarg(&grpargs, 'N', NULL); 976 addarg(&grpargs, 'q', NULL); 977 gid = pw_group(cnf, M_NEXT, &grpargs); 978 } 979 else 980 { 981 pw_group(cnf, M_ADD, &grpargs); 982 if ((grp = GETGRNAM(nam)) != NULL) 983 gid = grp->gr_gid; 984 } 985 a_gid = LIST_FIRST(&grpargs); 986 while (a_gid != NULL) { 987 struct carg *t = LIST_NEXT(a_gid, list); 988 LIST_REMOVE(a_gid, list); 989 a_gid = t; 990 } 991 } 992 ENDGRENT(); 993 return gid; 994} 995 996 997static time_t 998pw_pwdpolicy(struct userconf * cnf, struct cargs * args) 999{ 1000 time_t result = 0; 1001 time_t now = time(NULL); 1002 struct carg *arg = getarg(args, 'p'); 1003 1004 if (arg != NULL) { 1005 if ((result = parse_date(now, arg->val)) == now) 1006 errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 1007 } else if (cnf->password_days > 0) 1008 result = now + ((long) cnf->password_days * 86400L); 1009 return result; 1010} 1011 1012 1013static time_t 1014pw_exppolicy(struct userconf * cnf, struct cargs * args) 1015{ 1016 time_t result = 0; 1017 time_t now = time(NULL); 1018 struct carg *arg = getarg(args, 'e'); 1019 1020 if (arg != NULL) { 1021 if ((result = parse_date(now, arg->val)) == now) 1022 errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 1023 } else if (cnf->expire_days > 0) 1024 result = now + ((long) cnf->expire_days * 86400L); 1025 return result; 1026} 1027 1028 1029static char * 1030pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user) 1031{ 1032 struct carg *arg = getarg(args, 'd'); 1033 static char home[128]; 1034 1035 if (arg) 1036 return (arg->val); 1037 1038 if (cnf->home == NULL || *cnf->home == '\0') 1039 errx(EX_CONFIG, "no base home directory set"); 1040 snprintf(home, sizeof(home), "%s/%s", cnf->home, user); 1041 1042 return (home); 1043} 1044 1045static char * 1046shell_path(char const * path, char *shells[], char *sh) 1047{ 1048 if (sh != NULL && (*sh == '/' || *sh == '\0')) 1049 return sh; /* specified full path or forced none */ 1050 else { 1051 char *p; 1052 char paths[_UC_MAXLINE]; 1053 1054 /* 1055 * We need to search paths 1056 */ 1057 strlcpy(paths, path, sizeof(paths)); 1058 for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) { 1059 int i; 1060 static char shellpath[256]; 1061 1062 if (sh != NULL) { 1063 snprintf(shellpath, sizeof(shellpath), "%s/%s", p, sh); 1064 if (access(shellpath, X_OK) == 0) 1065 return shellpath; 1066 } else 1067 for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) { 1068 snprintf(shellpath, sizeof(shellpath), "%s/%s", p, shells[i]); 1069 if (access(shellpath, X_OK) == 0) 1070 return shellpath; 1071 } 1072 } 1073 if (sh == NULL) 1074 errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh); 1075 errx(EX_CONFIG, "no default shell available or defined"); 1076 return NULL; 1077 } 1078} 1079 1080 1081static char * 1082pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell) 1083{ 1084 char *sh = newshell; 1085 struct carg *arg = getarg(args, 's'); 1086 1087 if (newshell == NULL && arg != NULL) 1088 sh = arg->val; 1089 return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default); 1090} 1091 1092#define SALTSIZE 32 1093 1094static char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./"; 1095 1096char * 1097pw_pwcrypt(char *password) 1098{ 1099 int i; 1100 char salt[SALTSIZE + 1]; 1101 char *cryptpw; 1102 1103 static char buf[256]; 1104 1105 /* 1106 * Calculate a salt value 1107 */ 1108 for (i = 0; i < SALTSIZE; i++) 1109 salt[i] = chars[arc4random_uniform(sizeof(chars) - 1)]; 1110 salt[SALTSIZE] = '\0'; 1111 1112 cryptpw = crypt(password, salt); 1113 if (cryptpw == NULL) 1114 errx(EX_CONFIG, "crypt(3) failure"); 1115 return strcpy(buf, cryptpw); 1116} 1117 1118 1119static char * 1120pw_password(struct userconf * cnf, struct cargs * args, char const * user) 1121{ 1122 int i, l; 1123 char pwbuf[32]; 1124 1125 switch (cnf->default_password) { 1126 case -1: /* Random password */ 1127 l = (arc4random() % 8 + 8); /* 8 - 16 chars */ 1128 for (i = 0; i < l; i++) 1129 pwbuf[i] = chars[arc4random_uniform(sizeof(chars)-1)]; 1130 pwbuf[i] = '\0'; 1131 1132 /* 1133 * We give this information back to the user 1134 */ 1135 if (getarg(args, 'h') == NULL && getarg(args, 'H') == NULL && 1136 getarg(args, 'N') == NULL) { 1137 if (isatty(STDOUT_FILENO)) 1138 printf("Password for '%s' is: ", user); 1139 printf("%s\n", pwbuf); 1140 fflush(stdout); 1141 } 1142 break; 1143 1144 case -2: /* No password at all! */ 1145 return ""; 1146 1147 case 0: /* No login - default */ 1148 default: 1149 return "*"; 1150 1151 case 1: /* user's name */ 1152 strlcpy(pwbuf, user, sizeof(pwbuf)); 1153 break; 1154 } 1155 return pw_pwcrypt(pwbuf); 1156} 1157 1158 1159static int 1160print_user(struct passwd * pwd, int pretty, int v7) 1161{ 1162 if (!pretty) { 1163 char *buf; 1164 1165 if (!v7) 1166 pwd->pw_passwd = (pwd->pw_passwd == NULL) ? "" : "*"; 1167 1168 buf = v7 ? pw_make_v7(pwd) : pw_make(pwd); 1169 printf("%s\n", buf); 1170 free(buf); 1171 } else { 1172 int j; 1173 char *p; 1174 struct group *grp = GETGRGID(pwd->pw_gid); 1175 char uname[60] = "User &", office[60] = "[None]", 1176 wphone[60] = "[None]", hphone[60] = "[None]"; 1177 char acexpire[32] = "[None]", pwexpire[32] = "[None]"; 1178 struct tm * tptr; 1179 1180 if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { 1181 strlcpy(uname, p, sizeof(uname)); 1182 if ((p = strtok(NULL, ",")) != NULL) { 1183 strlcpy(office, p, sizeof(office)); 1184 if ((p = strtok(NULL, ",")) != NULL) { 1185 strlcpy(wphone, p, sizeof(wphone)); 1186 if ((p = strtok(NULL, "")) != NULL) { 1187 strlcpy(hphone, p, 1188 sizeof(hphone)); 1189 } 1190 } 1191 } 1192 } 1193 /* 1194 * Handle '&' in gecos field 1195 */ 1196 if ((p = strchr(uname, '&')) != NULL) { 1197 int l = strlen(pwd->pw_name); 1198 int m = strlen(p); 1199 1200 memmove(p + l, p + 1, m); 1201 memmove(p, pwd->pw_name, l); 1202 *p = (char) toupper((unsigned char)*p); 1203 } 1204 if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL) 1205 strftime(acexpire, sizeof acexpire, "%c", tptr); 1206 if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL) 1207 strftime(pwexpire, sizeof pwexpire, "%c", tptr); 1208 printf("Login Name: %-15s #%-12u Group: %-15s #%u\n" 1209 " Full Name: %s\n" 1210 " Home: %-26.26s Class: %s\n" 1211 " Shell: %-26.26s Office: %s\n" 1212 "Work Phone: %-26.26s Home Phone: %s\n" 1213 "Acc Expire: %-26.26s Pwd Expire: %s\n", 1214 pwd->pw_name, pwd->pw_uid, 1215 grp ? grp->gr_name : "(invalid)", pwd->pw_gid, 1216 uname, pwd->pw_dir, pwd->pw_class, 1217 pwd->pw_shell, office, wphone, hphone, 1218 acexpire, pwexpire); 1219 SETGRENT(); 1220 j = 0; 1221 while ((grp=GETGRENT()) != NULL) 1222 { 1223 int i = 0; 1224 if (grp->gr_mem != NULL) { 1225 while (grp->gr_mem[i] != NULL) 1226 { 1227 if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) 1228 { 1229 printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name); 1230 break; 1231 } 1232 ++i; 1233 } 1234 } 1235 } 1236 ENDGRENT(); 1237 printf("%s", j ? "\n" : ""); 1238 } 1239 return EXIT_SUCCESS; 1240} 1241 1242char * 1243pw_checkname(u_char *name, int gecos) 1244{ 1245 char showch[8]; 1246 u_char const *badchars, *ch, *showtype; 1247 int reject; 1248 1249 ch = name; 1250 reject = 0; 1251 if (gecos) { 1252 /* See if the name is valid as a gecos (comment) field. */ 1253 badchars = ":!@"; 1254 showtype = "gecos field"; 1255 } else { 1256 /* See if the name is valid as a userid or group. */ 1257 badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\""; 1258 showtype = "userid/group name"; 1259 /* Userids and groups can not have a leading '-'. */ 1260 if (*ch == '-') 1261 reject = 1; 1262 } 1263 if (!reject) { 1264 while (*ch) { 1265 if (strchr(badchars, *ch) != NULL || *ch < ' ' || 1266 *ch == 127) { 1267 reject = 1; 1268 break; 1269 } 1270 /* 8-bit characters are only allowed in GECOS fields */ 1271 if (!gecos && (*ch & 0x80)) { 1272 reject = 1; 1273 break; 1274 } 1275 ch++; 1276 } 1277 } 1278 /* 1279 * A `$' is allowed as the final character for userids and groups, 1280 * mainly for the benefit of samba. 1281 */ 1282 if (reject && !gecos) { 1283 if (*ch == '$' && *(ch + 1) == '\0') { 1284 reject = 0; 1285 ch++; 1286 } 1287 } 1288 if (reject) { 1289 snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127) 1290 ? "`%c'" : "0x%02x", *ch); 1291 errx(EX_DATAERR, "invalid character %s at position %td in %s", 1292 showch, (ch - name), showtype); 1293 } 1294 if (!gecos && (ch - name) > LOGNAMESIZE) 1295 errx(EX_DATAERR, "name too long `%s' (max is %d)", name, 1296 LOGNAMESIZE); 1297 return (char *)name; 1298} 1299 1300 1301static void 1302rmat(uid_t uid) 1303{ 1304 DIR *d = opendir("/var/at/jobs"); 1305 1306 if (d != NULL) { 1307 struct dirent *e; 1308 1309 while ((e = readdir(d)) != NULL) { 1310 struct stat st; 1311 1312 if (strncmp(e->d_name, ".lock", 5) != 0 && 1313 stat(e->d_name, &st) == 0 && 1314 !S_ISDIR(st.st_mode) && 1315 st.st_uid == uid) { 1316 char tmp[MAXPATHLEN]; 1317 1318 snprintf(tmp, sizeof(tmp), "/usr/bin/atrm %s", e->d_name); 1319 system(tmp); 1320 } 1321 } 1322 closedir(d); 1323 } 1324} 1325 1326static void 1327rmopie(char const * name) 1328{ 1329 static const char etcopie[] = "/etc/opiekeys"; 1330 FILE *fp = fopen(etcopie, "r+"); 1331 1332 if (fp != NULL) { 1333 char tmp[1024]; 1334 off_t atofs = 0; 1335 int length = strlen(name); 1336 1337 while (fgets(tmp, sizeof tmp, fp) != NULL) { 1338 if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') { 1339 if (fseek(fp, atofs, SEEK_SET) == 0) { 1340 fwrite("#", 1, 1, fp); /* Comment username out */ 1341 } 1342 break; 1343 } 1344 atofs = ftell(fp); 1345 } 1346 /* 1347 * If we got an error of any sort, don't update! 1348 */ 1349 fclose(fp); 1350 } 1351} 1352 1353