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 <unistd.h> 44 #include <login_cap.h> 45 #include <pwd.h> 46 #include <grp.h> 47 #include <libutil.h> 48 #include "pw.h" 49 #include "bitmap.h" 50 51 #define LOGNAMESIZE (MAXLOGNAME-1) 52 53 static char locked_str[] = "*LOCKED*"; 54 55 static int print_user(struct passwd * pwd, int pretty, int v7); 56 static uid_t pw_uidpolicy(struct userconf * cnf, struct cargs * args); 57 static uid_t pw_gidpolicy(struct userconf * cnf, 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, struct cargs * args, 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 /*- 68 * -C config configuration file 69 * -q quiet operation 70 * -n name login name 71 * -u uid user id 72 * -c comment user name/comment 73 * -d directory home directory 74 * -e date account expiry date 75 * -p date password expiry date 76 * -g grp primary group 77 * -G grp1,grp2 additional groups 78 * -m [ -k dir ] create and set up home 79 * -s shell name of login shell 80 * -o duplicate uid ok 81 * -L class user class 82 * -l name new login name 83 * -h fd password filehandle 84 * -H fd encrypted password filehandle 85 * -F force print or add 86 * Setting defaults: 87 * -D set user defaults 88 * -b dir default home root dir 89 * -e period default expiry period 90 * -p period default password change period 91 * -g group default group 92 * -G grp1,grp2.. default additional groups 93 * -L class default login class 94 * -k dir default home skeleton 95 * -s shell default shell 96 * -w method default password method 97 */ 98 99 int 100 pw_user(struct userconf * cnf, int mode, struct cargs * args) 101 { 102 int rc, edited = 0; 103 char *p = NULL; 104 char *passtmp; 105 struct carg *a_name; 106 struct carg *a_uid; 107 struct carg *arg; 108 struct passwd *pwd = NULL; 109 struct group *grp; 110 struct stat st; 111 char line[_PASSWORD_LEN+1]; 112 FILE *fp; 113 char *dmode_c; 114 void *set = NULL; 115 116 static struct passwd fakeuser = 117 { 118 NULL, 119 "*", 120 -1, 121 -1, 122 0, 123 "", 124 "User &", 125 "/nonexistent", 126 "/bin/sh", 127 0 128 #if defined(__FreeBSD__) 129 ,0 130 #endif 131 }; 132 133 134 /* 135 * With M_NEXT, we only need to return the 136 * next uid to stdout 137 */ 138 if (mode == M_NEXT) 139 { 140 uid_t next = pw_uidpolicy(cnf, args); 141 if (getarg(args, 'q')) 142 return next; 143 printf("%ld:", (long)next); 144 pw_group(cnf, mode, args); 145 return EXIT_SUCCESS; 146 } 147 148 /* 149 * We can do all of the common legwork here 150 */ 151 152 if ((arg = getarg(args, 'b')) != NULL) { 153 cnf->home = arg->val; 154 } 155 156 if ((arg = getarg(args, 'M')) != NULL) { 157 dmode_c = arg->val; 158 if ((set = setmode(dmode_c)) == NULL) 159 errx(EX_DATAERR, "invalid directory creation mode '%s'", 160 dmode_c); 161 cnf->homemode = getmode(set, _DEF_DIRMODE); 162 free(set); 163 } 164 165 /* 166 * If we'll need to use it or we're updating it, 167 * then create the base home directory if necessary 168 */ 169 if (arg != NULL || getarg(args, 'm') != NULL) { 170 int l = strlen(cnf->home); 171 172 if (l > 1 && cnf->home[l-1] == '/') /* Shave off any trailing path delimiter */ 173 cnf->home[--l] = '\0'; 174 175 if (l < 2 || *cnf->home != '/') /* Check for absolute path name */ 176 errx(EX_DATAERR, "invalid base directory for home '%s'", cnf->home); 177 178 if (stat(cnf->home, &st) == -1) { 179 char dbuf[MAXPATHLEN]; 180 181 /* 182 * This is a kludge especially for Joerg :) 183 * If the home directory would be created in the root partition, then 184 * we really create it under /usr which is likely to have more space. 185 * But we create a symlink from cnf->home -> "/usr" -> cnf->home 186 */ 187 if (strchr(cnf->home+1, '/') == NULL) { 188 strcpy(dbuf, "/usr"); 189 strncat(dbuf, cnf->home, MAXPATHLEN-5); 190 if (mkdir(dbuf, _DEF_DIRMODE) != -1 || errno == EEXIST) { 191 chown(dbuf, 0, 0); 192 /* 193 * Skip first "/" and create symlink: 194 * /home -> usr/home 195 */ 196 symlink(dbuf+1, cnf->home); 197 } 198 /* If this falls, fall back to old method */ 199 } 200 strlcpy(dbuf, cnf->home, sizeof(dbuf)); 201 p = dbuf; 202 if (stat(dbuf, &st) == -1) { 203 while ((p = strchr(p + 1, '/')) != NULL) { 204 *p = '\0'; 205 if (stat(dbuf, &st) == -1) { 206 if (mkdir(dbuf, _DEF_DIRMODE) == -1) 207 goto direrr; 208 chown(dbuf, 0, 0); 209 } else if (!S_ISDIR(st.st_mode)) 210 errx(EX_OSFILE, "'%s' (root home parent) is not a directory", dbuf); 211 *p = '/'; 212 } 213 } 214 if (stat(dbuf, &st) == -1) { 215 if (mkdir(dbuf, _DEF_DIRMODE) == -1) { 216 direrr: err(EX_OSFILE, "mkdir '%s'", dbuf); 217 } 218 chown(dbuf, 0, 0); 219 } 220 } else if (!S_ISDIR(st.st_mode)) 221 errx(EX_OSFILE, "root home `%s' is not a directory", cnf->home); 222 } 223 224 if ((arg = getarg(args, 'e')) != NULL) 225 cnf->expire_days = atoi(arg->val); 226 227 if ((arg = getarg(args, 'y')) != NULL) 228 cnf->nispasswd = arg->val; 229 230 if ((arg = getarg(args, 'p')) != NULL && arg->val) 231 cnf->password_days = atoi(arg->val); 232 233 if ((arg = getarg(args, 'g')) != NULL) { 234 if (!*(p = arg->val)) /* Handle empty group list specially */ 235 cnf->default_group = ""; 236 else { 237 if ((grp = GETGRNAM(p)) == NULL) { 238 if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 239 errx(EX_NOUSER, "group `%s' does not exist", p); 240 } 241 cnf->default_group = newstr(grp->gr_name); 242 } 243 } 244 if ((arg = getarg(args, 'L')) != NULL) 245 cnf->default_class = pw_checkname((u_char *)arg->val, 0); 246 247 if ((arg = getarg(args, 'G')) != NULL && arg->val) { 248 int i = 0; 249 250 for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) { 251 if ((grp = GETGRNAM(p)) == NULL) { 252 if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 253 errx(EX_NOUSER, "group `%s' does not exist", p); 254 } 255 if (extendarray(&cnf->groups, &cnf->numgroups, i + 2) != -1) 256 cnf->groups[i++] = newstr(grp->gr_name); 257 } 258 while (i < cnf->numgroups) 259 cnf->groups[i++] = NULL; 260 } 261 262 if ((arg = getarg(args, 'k')) != NULL) { 263 if (stat(cnf->dotdir = arg->val, &st) == -1 || !S_ISDIR(st.st_mode)) 264 errx(EX_OSFILE, "skeleton `%s' is not a directory or does not exist", cnf->dotdir); 265 } 266 267 if ((arg = getarg(args, 's')) != NULL) 268 cnf->shell_default = arg->val; 269 270 if ((arg = getarg(args, 'w')) != NULL) 271 cnf->default_password = boolean_val(arg->val, cnf->default_password); 272 if (mode == M_ADD && getarg(args, 'D')) { 273 if (getarg(args, 'n') != NULL) 274 errx(EX_DATAERR, "can't combine `-D' with `-n name'"); 275 if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 276 if ((cnf->min_uid = (uid_t) atoi(p)) == 0) 277 cnf->min_uid = 1000; 278 if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid) 279 cnf->max_uid = 32000; 280 } 281 if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 282 if ((cnf->min_gid = (gid_t) atoi(p)) == 0) 283 cnf->min_gid = 1000; 284 if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid) 285 cnf->max_gid = 32000; 286 } 287 288 arg = getarg(args, 'C'); 289 if (write_userconfig(arg ? arg->val : NULL)) 290 return EXIT_SUCCESS; 291 warn("config update"); 292 return EX_IOERR; 293 } 294 295 if (mode == M_PRINT && getarg(args, 'a')) { 296 int pretty = getarg(args, 'P') != NULL; 297 int v7 = getarg(args, '7') != NULL; 298 SETPWENT(); 299 while ((pwd = GETPWENT()) != NULL) 300 print_user(pwd, pretty, v7); 301 ENDPWENT(); 302 return EXIT_SUCCESS; 303 } 304 305 if ((a_name = getarg(args, 'n')) != NULL) 306 pwd = GETPWNAM(pw_checkname((u_char *)a_name->val, 0)); 307 a_uid = getarg(args, 'u'); 308 309 if (a_uid == NULL) { 310 if (a_name == NULL) 311 errx(EX_DATAERR, "user name or id required"); 312 313 /* 314 * Determine whether 'n' switch is name or uid - we don't 315 * really don't really care which we have, but we need to 316 * know. 317 */ 318 if (mode != M_ADD && pwd == NULL 319 && strspn(a_name->val, "0123456789") == strlen(a_name->val) 320 && *a_name->val) { 321 (a_uid = a_name)->ch = 'u'; 322 a_name = NULL; 323 } 324 } 325 326 /* 327 * Update, delete & print require that the user exists 328 */ 329 if (mode == M_UPDATE || mode == M_DELETE || 330 mode == M_PRINT || mode == M_LOCK || mode == M_UNLOCK) { 331 332 if (a_name == NULL && pwd == NULL) /* Try harder */ 333 pwd = GETPWUID(atoi(a_uid->val)); 334 335 if (pwd == NULL) { 336 if (mode == M_PRINT && getarg(args, 'F')) { 337 fakeuser.pw_name = a_name ? a_name->val : "nouser"; 338 fakeuser.pw_uid = a_uid ? (uid_t) atol(a_uid->val) : -1; 339 return print_user(&fakeuser, 340 getarg(args, 'P') != NULL, 341 getarg(args, '7') != NULL); 342 } 343 if (a_name == NULL) 344 errx(EX_NOUSER, "no such uid `%s'", a_uid->val); 345 errx(EX_NOUSER, "no such user `%s'", a_name->val); 346 } 347 348 if (a_name == NULL) /* May be needed later */ 349 a_name = addarg(args, 'n', newstr(pwd->pw_name)); 350 351 /* 352 * The M_LOCK and M_UNLOCK functions simply add or remove 353 * a "*LOCKED*" prefix from in front of the password to 354 * prevent it decoding correctly, and therefore prevents 355 * access. Of course, this only prevents access via 356 * password authentication (not ssh, kerberos or any 357 * other method that does not use the UNIX password) but 358 * that is a known limitation. 359 */ 360 361 if (mode == M_LOCK) { 362 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) == 0) 363 errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name); 364 passtmp = malloc(strlen(pwd->pw_passwd) + sizeof(locked_str)); 365 if (passtmp == NULL) /* disaster */ 366 errx(EX_UNAVAILABLE, "out of memory"); 367 strcpy(passtmp, locked_str); 368 strcat(passtmp, pwd->pw_passwd); 369 pwd->pw_passwd = passtmp; 370 edited = 1; 371 } else if (mode == M_UNLOCK) { 372 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) != 0) 373 errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name); 374 pwd->pw_passwd += sizeof(locked_str)-1; 375 edited = 1; 376 } else if (mode == M_DELETE) { 377 /* 378 * Handle deletions now 379 */ 380 char file[MAXPATHLEN]; 381 char home[MAXPATHLEN]; 382 uid_t uid = pwd->pw_uid; 383 384 if (strcmp(pwd->pw_name, "root") == 0) 385 errx(EX_DATAERR, "cannot remove user 'root'"); 386 387 if (!PWALTDIR()) { 388 /* 389 * Remove opie record from /etc/opiekeys 390 */ 391 392 rmopie(pwd->pw_name); 393 394 /* 395 * Remove crontabs 396 */ 397 snprintf(file, sizeof(file), "/var/cron/tabs/%s", pwd->pw_name); 398 if (access(file, F_OK) == 0) { 399 sprintf(file, "crontab -u %s -r", pwd->pw_name); 400 system(file); 401 } 402 } 403 /* 404 * Save these for later, since contents of pwd may be 405 * invalidated by deletion 406 */ 407 sprintf(file, "%s/%s", _PATH_MAILDIR, pwd->pw_name); 408 strlcpy(home, pwd->pw_dir, sizeof(home)); 409 410 rc = delpwent(pwd); 411 if (rc == -1) 412 err(EX_IOERR, "user '%s' does not exist", pwd->pw_name); 413 else if (rc != 0) { 414 warn("passwd update"); 415 return EX_IOERR; 416 } 417 418 if (cnf->nispasswd && *cnf->nispasswd=='/') { 419 rc = delnispwent(cnf->nispasswd, a_name->val); 420 if (rc == -1) 421 warnx("WARNING: user '%s' does not exist in NIS passwd", pwd->pw_name); 422 else if (rc != 0) 423 warn("WARNING: NIS passwd update"); 424 /* non-fatal */ 425 } 426 427 grp = GETGRNAM(a_name->val); 428 if (grp != NULL && *grp->gr_mem == NULL) 429 delgrent(GETGRNAM(a_name->val)); 430 SETGRENT(); 431 while ((grp = GETGRENT()) != NULL) { 432 int i; 433 char group[MAXLOGNAME]; 434 for (i = 0; grp->gr_mem[i] != NULL; i++) { 435 if (!strcmp(grp->gr_mem[i], a_name->val)) { 436 while (grp->gr_mem[i] != NULL) { 437 grp->gr_mem[i] = grp->gr_mem[i+1]; 438 } 439 strlcpy(group, grp->gr_name, MAXLOGNAME); 440 chggrent(group, grp); 441 } 442 } 443 } 444 ENDGRENT(); 445 446 pw_log(cnf, mode, W_USER, "%s(%ld) account removed", a_name->val, (long) uid); 447 448 if (!PWALTDIR()) { 449 /* 450 * Remove mail file 451 */ 452 remove(file); 453 454 /* 455 * Remove at jobs 456 */ 457 if (getpwuid(uid) == NULL) 458 rmat(uid); 459 460 /* 461 * Remove home directory and contents 462 */ 463 if (getarg(args, 'r') != NULL && *home == '/' && getpwuid(uid) == NULL) { 464 if (stat(home, &st) != -1) { 465 rm_r(home, uid); 466 pw_log(cnf, mode, W_USER, "%s(%ld) home '%s' %sremoved", 467 a_name->val, (long) uid, home, 468 stat(home, &st) == -1 ? "" : "not completely "); 469 } 470 } 471 } 472 return EXIT_SUCCESS; 473 } else if (mode == M_PRINT) 474 return print_user(pwd, 475 getarg(args, 'P') != NULL, 476 getarg(args, '7') != NULL); 477 478 /* 479 * The rest is edit code 480 */ 481 if ((arg = getarg(args, 'l')) != NULL) { 482 if (strcmp(pwd->pw_name, "root") == 0) 483 errx(EX_DATAERR, "can't rename `root' account"); 484 pwd->pw_name = pw_checkname((u_char *)arg->val, 0); 485 edited = 1; 486 } 487 488 if ((arg = getarg(args, 'u')) != NULL && isdigit((unsigned char)*arg->val)) { 489 pwd->pw_uid = (uid_t) atol(arg->val); 490 edited = 1; 491 if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) 492 errx(EX_DATAERR, "can't change uid of `root' account"); 493 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 494 warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name); 495 } 496 497 if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) { /* Already checked this */ 498 gid_t newgid = (gid_t) GETGRNAM(cnf->default_group)->gr_gid; 499 if (newgid != pwd->pw_gid) { 500 edited = 1; 501 pwd->pw_gid = newgid; 502 } 503 } 504 505 if ((arg = getarg(args, 'p')) != NULL) { 506 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 507 if (pwd->pw_change != 0) { 508 pwd->pw_change = 0; 509 edited = 1; 510 } 511 } 512 else { 513 time_t now = time(NULL); 514 time_t expire = parse_date(now, arg->val); 515 516 if (pwd->pw_change != expire) { 517 pwd->pw_change = expire; 518 edited = 1; 519 } 520 } 521 } 522 523 if ((arg = getarg(args, 'e')) != NULL) { 524 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 525 if (pwd->pw_expire != 0) { 526 pwd->pw_expire = 0; 527 edited = 1; 528 } 529 } 530 else { 531 time_t now = time(NULL); 532 time_t expire = parse_date(now, arg->val); 533 534 if (pwd->pw_expire != expire) { 535 pwd->pw_expire = expire; 536 edited = 1; 537 } 538 } 539 } 540 541 if ((arg = getarg(args, 's')) != NULL) { 542 char *shell = shell_path(cnf->shelldir, cnf->shells, arg->val); 543 if (shell == NULL) 544 shell = ""; 545 if (strcmp(shell, pwd->pw_shell) != 0) { 546 pwd->pw_shell = shell; 547 edited = 1; 548 } 549 } 550 551 if (getarg(args, 'L')) { 552 if (cnf->default_class == NULL) 553 cnf->default_class = ""; 554 if (strcmp(pwd->pw_class, cnf->default_class) != 0) { 555 pwd->pw_class = cnf->default_class; 556 edited = 1; 557 } 558 } 559 560 if ((arg = getarg(args, 'd')) != NULL) { 561 if (strcmp(pwd->pw_dir, arg->val)) 562 edited = 1; 563 if (stat(pwd->pw_dir = arg->val, &st) == -1) { 564 if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0) 565 warnx("WARNING: home `%s' does not exist", pwd->pw_dir); 566 } else if (!S_ISDIR(st.st_mode)) 567 warnx("WARNING: home `%s' is not a directory", pwd->pw_dir); 568 } 569 570 if ((arg = getarg(args, 'w')) != NULL && 571 getarg(args, 'h') == NULL && getarg(args, 'H') == NULL) { 572 login_cap_t *lc; 573 574 lc = login_getpwclass(pwd); 575 if (lc == NULL || 576 login_setcryptfmt(lc, "sha512", NULL) == NULL) 577 warn("setting crypt(3) format"); 578 login_close(lc); 579 pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 580 edited = 1; 581 } 582 583 } else { 584 login_cap_t *lc; 585 586 /* 587 * Add code 588 */ 589 590 if (a_name == NULL) /* Required */ 591 errx(EX_DATAERR, "login name required"); 592 else if ((pwd = GETPWNAM(a_name->val)) != NULL) /* Exists */ 593 errx(EX_DATAERR, "login name `%s' already exists", a_name->val); 594 595 /* 596 * Now, set up defaults for a new user 597 */ 598 pwd = &fakeuser; 599 pwd->pw_name = a_name->val; 600 pwd->pw_class = cnf->default_class ? cnf->default_class : ""; 601 pwd->pw_uid = pw_uidpolicy(cnf, args); 602 pwd->pw_gid = pw_gidpolicy(cnf, args, pwd->pw_name, (gid_t) pwd->pw_uid); 603 pwd->pw_change = pw_pwdpolicy(cnf, args); 604 pwd->pw_expire = pw_exppolicy(cnf, args); 605 pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name); 606 pwd->pw_shell = pw_shellpolicy(cnf, args, NULL); 607 lc = login_getpwclass(pwd); 608 if (lc == NULL || login_setcryptfmt(lc, "md5", NULL) == NULL) 609 warn("setting crypt(3) format"); 610 login_close(lc); 611 pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 612 edited = 1; 613 614 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 615 warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name); 616 } 617 618 /* 619 * Shared add/edit code 620 */ 621 if ((arg = getarg(args, 'c')) != NULL) { 622 char *gecos = pw_checkname((u_char *)arg->val, 1); 623 if (strcmp(pwd->pw_gecos, gecos) != 0) { 624 pwd->pw_gecos = gecos; 625 edited = 1; 626 } 627 } 628 629 if ((arg = getarg(args, 'h')) != NULL || 630 (arg = getarg(args, 'H')) != NULL) { 631 if (strcmp(arg->val, "-") == 0) { 632 if (!pwd->pw_passwd || *pwd->pw_passwd != '*') { 633 pwd->pw_passwd = "*"; /* No access */ 634 edited = 1; 635 } 636 } else { 637 int fd = atoi(arg->val); 638 int precrypt = (arg->ch == 'H'); 639 int b; 640 int istty = isatty(fd); 641 struct termios t; 642 login_cap_t *lc; 643 644 if (istty) { 645 if (tcgetattr(fd, &t) == -1) 646 istty = 0; 647 else { 648 struct termios n = t; 649 650 /* Disable echo */ 651 n.c_lflag &= ~(ECHO); 652 tcsetattr(fd, TCSANOW, &n); 653 printf("%s%spassword for user %s:", 654 (mode == M_UPDATE) ? "new " : "", 655 precrypt ? "encrypted " : "", 656 pwd->pw_name); 657 fflush(stdout); 658 } 659 } 660 b = read(fd, line, sizeof(line) - 1); 661 if (istty) { /* Restore state */ 662 tcsetattr(fd, TCSANOW, &t); 663 fputc('\n', stdout); 664 fflush(stdout); 665 } 666 if (b < 0) { 667 warn("-%c file descriptor", precrypt ? 'H' : 668 'h'); 669 return EX_IOERR; 670 } 671 line[b] = '\0'; 672 if ((p = strpbrk(line, "\r\n")) != NULL) 673 *p = '\0'; 674 if (!*line) 675 errx(EX_DATAERR, "empty password read on file descriptor %d", fd); 676 if (precrypt) { 677 if (strchr(line, ':') != NULL) 678 return EX_DATAERR; 679 pwd->pw_passwd = line; 680 } else { 681 lc = login_getpwclass(pwd); 682 if (lc == NULL || 683 login_setcryptfmt(lc, "md5", NULL) == NULL) 684 warn("setting crypt(3) format"); 685 login_close(lc); 686 pwd->pw_passwd = pw_pwcrypt(line); 687 } 688 edited = 1; 689 } 690 } 691 692 /* 693 * Special case: -N only displays & exits 694 */ 695 if (getarg(args, 'N') != NULL) 696 return print_user(pwd, 697 getarg(args, 'P') != NULL, 698 getarg(args, '7') != NULL); 699 700 if (mode == M_ADD) { 701 edited = 1; /* Always */ 702 rc = addpwent(pwd); 703 if (rc == -1) { 704 warnx("user '%s' already exists", pwd->pw_name); 705 return EX_IOERR; 706 } else if (rc != 0) { 707 warn("passwd file update"); 708 return EX_IOERR; 709 } 710 if (cnf->nispasswd && *cnf->nispasswd=='/') { 711 rc = addnispwent(cnf->nispasswd, pwd); 712 if (rc == -1) 713 warnx("User '%s' already exists in NIS passwd", pwd->pw_name); 714 else 715 warn("NIS passwd update"); 716 /* NOTE: we treat NIS-only update errors as non-fatal */ 717 } 718 } else if (mode == M_UPDATE || mode == M_LOCK || mode == M_UNLOCK) { 719 if (edited) { /* Only updated this if required */ 720 rc = chgpwent(a_name->val, pwd); 721 if (rc == -1) { 722 warnx("user '%s' does not exist (NIS?)", pwd->pw_name); 723 return EX_IOERR; 724 } else if (rc != 0) { 725 warn("passwd file update"); 726 return EX_IOERR; 727 } 728 if ( cnf->nispasswd && *cnf->nispasswd=='/') { 729 rc = chgnispwent(cnf->nispasswd, a_name->val, pwd); 730 if (rc == -1) 731 warn("User '%s' not found in NIS passwd", pwd->pw_name); 732 else 733 warn("NIS passwd update"); 734 /* NOTE: NIS-only update errors are not fatal */ 735 } 736 } 737 } 738 739 /* 740 * Ok, user is created or changed - now edit group file 741 */ 742 743 if (mode == M_ADD || getarg(args, 'G') != NULL) { 744 int i; 745 for (i = 0; cnf->groups[i] != NULL; i++) { 746 grp = GETGRNAM(cnf->groups[i]); 747 grp = gr_add(grp, pwd->pw_name); 748 /* 749 * grp can only be NULL in 2 cases: 750 * - the new member is already a member 751 * - a problem with memory occurs 752 * in both cases we want to skip now. 753 */ 754 if (grp == NULL) 755 continue; 756 chggrent(cnf->groups[i], grp); 757 free(grp); 758 } 759 } 760 761 762 /* go get a current version of pwd */ 763 pwd = GETPWNAM(a_name->val); 764 if (pwd == NULL) { 765 /* This will fail when we rename, so special case that */ 766 if (mode == M_UPDATE && (arg = getarg(args, 'l')) != NULL) { 767 a_name->val = arg->val; /* update new name */ 768 pwd = GETPWNAM(a_name->val); /* refetch renamed rec */ 769 } 770 } 771 if (pwd == NULL) /* can't go on without this */ 772 errx(EX_NOUSER, "user '%s' disappeared during update", a_name->val); 773 774 grp = GETGRGID(pwd->pw_gid); 775 pw_log(cnf, mode, W_USER, "%s(%ld):%s(%ld):%s:%s:%s", 776 pwd->pw_name, (long) pwd->pw_uid, 777 grp ? grp->gr_name : "unknown", (long) (grp ? grp->gr_gid : -1), 778 pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 779 780 /* 781 * If adding, let's touch and chown the user's mail file. This is not 782 * strictly necessary under BSD with a 0755 maildir but it also 783 * doesn't hurt anything to create the empty mailfile 784 */ 785 if (mode == M_ADD) { 786 if (!PWALTDIR()) { 787 sprintf(line, "%s/%s", _PATH_MAILDIR, pwd->pw_name); 788 close(open(line, O_RDWR | O_CREAT, 0600)); /* Preserve contents & 789 * mtime */ 790 chown(line, pwd->pw_uid, pwd->pw_gid); 791 } 792 } 793 794 /* 795 * Let's create and populate the user's home directory. Note 796 * that this also `works' for editing users if -m is used, but 797 * existing files will *not* be overwritten. 798 */ 799 if (!PWALTDIR() && getarg(args, 'm') != NULL && pwd->pw_dir && *pwd->pw_dir == '/' && pwd->pw_dir[1]) { 800 copymkdir(pwd->pw_dir, cnf->dotdir, cnf->homemode, pwd->pw_uid, pwd->pw_gid); 801 pw_log(cnf, mode, W_USER, "%s(%ld) home %s made", 802 pwd->pw_name, (long) pwd->pw_uid, pwd->pw_dir); 803 } 804 805 806 /* 807 * Finally, send mail to the new user as well, if we are asked to 808 */ 809 if (mode == M_ADD && !PWALTDIR() && cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) { 810 FILE *pfp = popen(_PATH_SENDMAIL " -t", "w"); 811 812 if (pfp == NULL) 813 warn("sendmail"); 814 else { 815 fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name); 816 while (fgets(line, sizeof(line), fp) != NULL) { 817 /* Do substitutions? */ 818 fputs(line, pfp); 819 } 820 pclose(pfp); 821 pw_log(cnf, mode, W_USER, "%s(%ld) new user mail sent", 822 pwd->pw_name, (long) pwd->pw_uid); 823 } 824 fclose(fp); 825 } 826 827 return EXIT_SUCCESS; 828 } 829 830 831 static uid_t 832 pw_uidpolicy(struct userconf * cnf, struct cargs * args) 833 { 834 struct passwd *pwd; 835 uid_t uid = (uid_t) - 1; 836 struct carg *a_uid = getarg(args, 'u'); 837 838 /* 839 * Check the given uid, if any 840 */ 841 if (a_uid != NULL) { 842 uid = (uid_t) atol(a_uid->val); 843 844 if ((pwd = GETPWUID(uid)) != NULL && getarg(args, 'o') == NULL) 845 errx(EX_DATAERR, "uid `%ld' has already been allocated", (long) pwd->pw_uid); 846 } else { 847 struct bitmap bm; 848 849 /* 850 * We need to allocate the next available uid under one of 851 * two policies a) Grab the first unused uid b) Grab the 852 * highest possible unused uid 853 */ 854 if (cnf->min_uid >= cnf->max_uid) { /* Sanity 855 * claus^H^H^H^Hheck */ 856 cnf->min_uid = 1000; 857 cnf->max_uid = 32000; 858 } 859 bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1); 860 861 /* 862 * Now, let's fill the bitmap from the password file 863 */ 864 SETPWENT(); 865 while ((pwd = GETPWENT()) != NULL) 866 if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid) 867 bm_setbit(&bm, pwd->pw_uid - cnf->min_uid); 868 ENDPWENT(); 869 870 /* 871 * Then apply the policy, with fallback to reuse if necessary 872 */ 873 if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid) 874 uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid); 875 876 /* 877 * Another sanity check 878 */ 879 if (uid < cnf->min_uid || uid > cnf->max_uid) 880 errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used"); 881 bm_dealloc(&bm); 882 } 883 return uid; 884 } 885 886 887 static uid_t 888 pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer) 889 { 890 struct group *grp; 891 gid_t gid = (uid_t) - 1; 892 struct carg *a_gid = getarg(args, 'g'); 893 894 /* 895 * If no arg given, see if default can help out 896 */ 897 if (a_gid == NULL && cnf->default_group && *cnf->default_group) 898 a_gid = addarg(args, 'g', cnf->default_group); 899 900 /* 901 * Check the given gid, if any 902 */ 903 SETGRENT(); 904 if (a_gid != NULL) { 905 if ((grp = GETGRNAM(a_gid->val)) == NULL) { 906 gid = (gid_t) atol(a_gid->val); 907 if ((gid == 0 && !isdigit((unsigned char)*a_gid->val)) || (grp = GETGRGID(gid)) == NULL) 908 errx(EX_NOUSER, "group `%s' is not defined", a_gid->val); 909 } 910 gid = grp->gr_gid; 911 } else if ((grp = GETGRNAM(nam)) != NULL && grp->gr_mem[0] == NULL) { 912 gid = grp->gr_gid; /* Already created? Use it anyway... */ 913 } else { 914 struct cargs grpargs; 915 char tmp[32]; 916 917 LIST_INIT(&grpargs); 918 addarg(&grpargs, 'n', nam); 919 920 /* 921 * We need to auto-create a group with the user's name. We 922 * can send all the appropriate output to our sister routine 923 * bit first see if we can create a group with gid==uid so we 924 * can keep the user and group ids in sync. We purposely do 925 * NOT check the gid range if we can force the sync. If the 926 * user's name dups an existing group, then the group add 927 * function will happily handle that case for us and exit. 928 */ 929 if (GETGRGID(prefer) == NULL) { 930 sprintf(tmp, "%lu", (unsigned long) prefer); 931 addarg(&grpargs, 'g', tmp); 932 } 933 if (getarg(args, 'N')) 934 { 935 addarg(&grpargs, 'N', NULL); 936 addarg(&grpargs, 'q', NULL); 937 gid = pw_group(cnf, M_NEXT, &grpargs); 938 } 939 else 940 { 941 pw_group(cnf, M_ADD, &grpargs); 942 if ((grp = GETGRNAM(nam)) != NULL) 943 gid = grp->gr_gid; 944 } 945 a_gid = LIST_FIRST(&grpargs); 946 while (a_gid != NULL) { 947 struct carg *t = LIST_NEXT(a_gid, list); 948 LIST_REMOVE(a_gid, list); 949 a_gid = t; 950 } 951 } 952 ENDGRENT(); 953 return gid; 954 } 955 956 957 static time_t 958 pw_pwdpolicy(struct userconf * cnf, struct cargs * args) 959 { 960 time_t result = 0; 961 time_t now = time(NULL); 962 struct carg *arg = getarg(args, 'p'); 963 964 if (arg != NULL) { 965 if ((result = parse_date(now, arg->val)) == now) 966 errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 967 } else if (cnf->password_days > 0) 968 result = now + ((long) cnf->password_days * 86400L); 969 return result; 970 } 971 972 973 static time_t 974 pw_exppolicy(struct userconf * cnf, struct cargs * args) 975 { 976 time_t result = 0; 977 time_t now = time(NULL); 978 struct carg *arg = getarg(args, 'e'); 979 980 if (arg != NULL) { 981 if ((result = parse_date(now, arg->val)) == now) 982 errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 983 } else if (cnf->expire_days > 0) 984 result = now + ((long) cnf->expire_days * 86400L); 985 return result; 986 } 987 988 989 static char * 990 pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user) 991 { 992 struct carg *arg = getarg(args, 'd'); 993 994 if (arg) 995 return arg->val; 996 else { 997 static char home[128]; 998 999 if (cnf->home == NULL || *cnf->home == '\0') 1000 errx(EX_CONFIG, "no base home directory set"); 1001 sprintf(home, "%s/%s", cnf->home, user); 1002 return home; 1003 } 1004 } 1005 1006 static char * 1007 shell_path(char const * path, char *shells[], char *sh) 1008 { 1009 if (sh != NULL && (*sh == '/' || *sh == '\0')) 1010 return sh; /* specified full path or forced none */ 1011 else { 1012 char *p; 1013 char paths[_UC_MAXLINE]; 1014 1015 /* 1016 * We need to search paths 1017 */ 1018 strlcpy(paths, path, sizeof(paths)); 1019 for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) { 1020 int i; 1021 static char shellpath[256]; 1022 1023 if (sh != NULL) { 1024 sprintf(shellpath, "%s/%s", p, sh); 1025 if (access(shellpath, X_OK) == 0) 1026 return shellpath; 1027 } else 1028 for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) { 1029 sprintf(shellpath, "%s/%s", p, shells[i]); 1030 if (access(shellpath, X_OK) == 0) 1031 return shellpath; 1032 } 1033 } 1034 if (sh == NULL) 1035 errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh); 1036 errx(EX_CONFIG, "no default shell available or defined"); 1037 return NULL; 1038 } 1039 } 1040 1041 1042 static char * 1043 pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell) 1044 { 1045 char *sh = newshell; 1046 struct carg *arg = getarg(args, 's'); 1047 1048 if (newshell == NULL && arg != NULL) 1049 sh = arg->val; 1050 return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default); 1051 } 1052 1053 #define SALTSIZE 32 1054 1055 static char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./"; 1056 1057 char * 1058 pw_pwcrypt(char *password) 1059 { 1060 int i; 1061 char salt[SALTSIZE + 1]; 1062 char *cryptpw; 1063 1064 static char buf[256]; 1065 1066 /* 1067 * Calculate a salt value 1068 */ 1069 for (i = 0; i < SALTSIZE; i++) 1070 salt[i] = chars[arc4random_uniform(sizeof(chars) - 1)]; 1071 salt[SALTSIZE] = '\0'; 1072 1073 cryptpw = crypt(password, salt); 1074 if (cryptpw == NULL) 1075 errx(EX_CONFIG, "crypt(3) failure"); 1076 return strcpy(buf, cryptpw); 1077 } 1078 1079 1080 static char * 1081 pw_password(struct userconf * cnf, struct cargs * args, char const * user) 1082 { 1083 int i, l; 1084 char pwbuf[32]; 1085 1086 switch (cnf->default_password) { 1087 case -1: /* Random password */ 1088 l = (arc4random() % 8 + 8); /* 8 - 16 chars */ 1089 for (i = 0; i < l; i++) 1090 pwbuf[i] = chars[arc4random_uniform(sizeof(chars)-1)]; 1091 pwbuf[i] = '\0'; 1092 1093 /* 1094 * We give this information back to the user 1095 */ 1096 if (getarg(args, 'h') == NULL && getarg(args, 'H') == NULL && 1097 getarg(args, 'N') == NULL) { 1098 if (isatty(STDOUT_FILENO)) 1099 printf("Password for '%s' is: ", user); 1100 printf("%s\n", pwbuf); 1101 fflush(stdout); 1102 } 1103 break; 1104 1105 case -2: /* No password at all! */ 1106 return ""; 1107 1108 case 0: /* No login - default */ 1109 default: 1110 return "*"; 1111 1112 case 1: /* user's name */ 1113 strlcpy(pwbuf, user, sizeof(pwbuf)); 1114 break; 1115 } 1116 return pw_pwcrypt(pwbuf); 1117 } 1118 1119 1120 static int 1121 print_user(struct passwd * pwd, int pretty, int v7) 1122 { 1123 if (!pretty) { 1124 char *buf; 1125 1126 if (!v7) 1127 pwd->pw_passwd = (pwd->pw_passwd == NULL) ? "" : "*"; 1128 1129 buf = v7 ? pw_make_v7(pwd) : pw_make(pwd); 1130 printf("%s\n", buf); 1131 free(buf); 1132 } else { 1133 int j; 1134 char *p; 1135 struct group *grp = GETGRGID(pwd->pw_gid); 1136 char uname[60] = "User &", office[60] = "[None]", 1137 wphone[60] = "[None]", hphone[60] = "[None]"; 1138 char acexpire[32] = "[None]", pwexpire[32] = "[None]"; 1139 struct tm * tptr; 1140 1141 if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { 1142 strlcpy(uname, p, sizeof(uname)); 1143 if ((p = strtok(NULL, ",")) != NULL) { 1144 strlcpy(office, p, sizeof(office)); 1145 if ((p = strtok(NULL, ",")) != NULL) { 1146 strlcpy(wphone, p, sizeof(wphone)); 1147 if ((p = strtok(NULL, "")) != NULL) { 1148 strlcpy(hphone, p, 1149 sizeof(hphone)); 1150 } 1151 } 1152 } 1153 } 1154 /* 1155 * Handle '&' in gecos field 1156 */ 1157 if ((p = strchr(uname, '&')) != NULL) { 1158 int l = strlen(pwd->pw_name); 1159 int m = strlen(p); 1160 1161 memmove(p + l, p + 1, m); 1162 memmove(p, pwd->pw_name, l); 1163 *p = (char) toupper((unsigned char)*p); 1164 } 1165 if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL) 1166 strftime(acexpire, sizeof acexpire, "%c", tptr); 1167 if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL) 1168 strftime(pwexpire, sizeof pwexpire, "%c", tptr); 1169 printf("Login Name: %-15s #%-12ld Group: %-15s #%ld\n" 1170 " Full Name: %s\n" 1171 " Home: %-26.26s Class: %s\n" 1172 " Shell: %-26.26s Office: %s\n" 1173 "Work Phone: %-26.26s Home Phone: %s\n" 1174 "Acc Expire: %-26.26s Pwd Expire: %s\n", 1175 pwd->pw_name, (long) pwd->pw_uid, 1176 grp ? grp->gr_name : "(invalid)", (long) pwd->pw_gid, 1177 uname, pwd->pw_dir, pwd->pw_class, 1178 pwd->pw_shell, office, wphone, hphone, 1179 acexpire, pwexpire); 1180 SETGRENT(); 1181 j = 0; 1182 while ((grp=GETGRENT()) != NULL) 1183 { 1184 int i = 0; 1185 while (grp->gr_mem[i] != NULL) 1186 { 1187 if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) 1188 { 1189 printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name); 1190 break; 1191 } 1192 ++i; 1193 } 1194 } 1195 ENDGRENT(); 1196 printf("%s", j ? "\n" : ""); 1197 } 1198 return EXIT_SUCCESS; 1199 } 1200 1201 char * 1202 pw_checkname(u_char *name, int gecos) 1203 { 1204 char showch[8]; 1205 u_char const *badchars, *ch, *showtype; 1206 int reject; 1207 1208 ch = name; 1209 reject = 0; 1210 if (gecos) { 1211 /* See if the name is valid as a gecos (comment) field. */ 1212 badchars = ":!@"; 1213 showtype = "gecos field"; 1214 } else { 1215 /* See if the name is valid as a userid or group. */ 1216 badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\""; 1217 showtype = "userid/group name"; 1218 /* Userids and groups can not have a leading '-'. */ 1219 if (*ch == '-') 1220 reject = 1; 1221 } 1222 if (!reject) { 1223 while (*ch) { 1224 if (strchr(badchars, *ch) != NULL || *ch < ' ' || 1225 *ch == 127) { 1226 reject = 1; 1227 break; 1228 } 1229 /* 8-bit characters are only allowed in GECOS fields */ 1230 if (!gecos && (*ch & 0x80)) { 1231 reject = 1; 1232 break; 1233 } 1234 ch++; 1235 } 1236 } 1237 /* 1238 * A `$' is allowed as the final character for userids and groups, 1239 * mainly for the benefit of samba. 1240 */ 1241 if (reject && !gecos) { 1242 if (*ch == '$' && *(ch + 1) == '\0') { 1243 reject = 0; 1244 ch++; 1245 } 1246 } 1247 if (reject) { 1248 snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127) 1249 ? "`%c'" : "0x%02x", *ch); 1250 errx(EX_DATAERR, "invalid character %s at position %td in %s", 1251 showch, (ch - name), showtype); 1252 } 1253 if (!gecos && (ch - name) > LOGNAMESIZE) 1254 errx(EX_DATAERR, "name too long `%s' (max is %d)", name, 1255 LOGNAMESIZE); 1256 return (char *)name; 1257 } 1258 1259 1260 static void 1261 rmat(uid_t uid) 1262 { 1263 DIR *d = opendir("/var/at/jobs"); 1264 1265 if (d != NULL) { 1266 struct dirent *e; 1267 1268 while ((e = readdir(d)) != NULL) { 1269 struct stat st; 1270 1271 if (strncmp(e->d_name, ".lock", 5) != 0 && 1272 stat(e->d_name, &st) == 0 && 1273 !S_ISDIR(st.st_mode) && 1274 st.st_uid == uid) { 1275 char tmp[MAXPATHLEN]; 1276 1277 sprintf(tmp, "/usr/bin/atrm %s", e->d_name); 1278 system(tmp); 1279 } 1280 } 1281 closedir(d); 1282 } 1283 } 1284 1285 static void 1286 rmopie(char const * name) 1287 { 1288 static const char etcopie[] = "/etc/opiekeys"; 1289 FILE *fp = fopen(etcopie, "r+"); 1290 1291 if (fp != NULL) { 1292 char tmp[1024]; 1293 off_t atofs = 0; 1294 int length = strlen(name); 1295 1296 while (fgets(tmp, sizeof tmp, fp) != NULL) { 1297 if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') { 1298 if (fseek(fp, atofs, SEEK_SET) == 0) { 1299 fwrite("#", 1, 1, fp); /* Comment username out */ 1300 } 1301 break; 1302 } 1303 atofs = ftell(fp); 1304 } 1305 /* 1306 * If we got an error of any sort, don't update! 1307 */ 1308 fclose(fp); 1309 } 1310 } 1311 1312