pw_user.c revision 284122
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 284122 2015-06-07 15:27:17Z 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 v7); 57static uid_t pw_uidpolicy(struct userconf * cnf, struct cargs * args); 58static uid_t pw_gidpolicy(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 passwd *pwd) 70{ 71 char *homedir, *dotdir; 72 struct userconf *cnf = conf.userconf; 73 74 homedir = dotdir = NULL; 75 76 if (conf.rootdir[0] != '\0') { 77 asprintf(&homedir, "%s/%s", conf.rootdir, pwd->pw_dir); 78 if (homedir == NULL) 79 errx(EX_OSERR, "out of memory"); 80 asprintf(&dotdir, "%s/%s", conf.rootdir, cnf->dotdir); 81 } 82 83 copymkdir(homedir ? homedir : pwd->pw_dir, dotdir ? dotdir: cnf->dotdir, 84 cnf->homemode, pwd->pw_uid, pwd->pw_gid); 85 pw_log(cnf, mode, W_USER, "%s(%u) home %s made", pwd->pw_name, 86 pwd->pw_uid, pwd->pw_dir); 87} 88 89/*- 90 * -C config configuration file 91 * -q quiet operation 92 * -n name login name 93 * -u uid user id 94 * -c comment user name/comment 95 * -d directory home directory 96 * -e date account expiry date 97 * -p date password expiry date 98 * -g grp primary group 99 * -G grp1,grp2 additional groups 100 * -m [ -k dir ] create and set up home 101 * -s shell name of login shell 102 * -o duplicate uid ok 103 * -L class user class 104 * -l name new login name 105 * -h fd password filehandle 106 * -H fd encrypted password filehandle 107 * -F force print or add 108 * Setting defaults: 109 * -D set user defaults 110 * -b dir default home root dir 111 * -e period default expiry period 112 * -p period default password change period 113 * -g group default group 114 * -G grp1,grp2.. default additional groups 115 * -L class default login class 116 * -k dir default home skeleton 117 * -s shell default shell 118 * -w method default password method 119 */ 120 121int 122pw_user(int mode, struct cargs * args) 123{ 124 int rc, edited = 0; 125 char *p = NULL; 126 char *passtmp; 127 struct carg *a_name; 128 struct carg *a_uid; 129 struct carg *arg; 130 struct passwd *pwd = NULL; 131 struct group *grp; 132 struct stat st; 133 struct userconf *cnf; 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 cnf = conf.userconf; 158 159 /* 160 * With M_NEXT, we only need to return the 161 * next uid to stdout 162 */ 163 if (mode == M_NEXT) 164 { 165 uid_t next = pw_uidpolicy(cnf, args); 166 if (getarg(args, 'q')) 167 return next; 168 printf("%u:", next); 169 pw_group(mode, args); 170 return EXIT_SUCCESS; 171 } 172 173 /* 174 * We can do all of the common legwork here 175 */ 176 177 if ((arg = getarg(args, 'b')) != NULL) { 178 cnf->home = arg->val; 179 } 180 181 if ((arg = getarg(args, 'M')) != NULL) { 182 dmode_c = arg->val; 183 if ((set = setmode(dmode_c)) == NULL) 184 errx(EX_DATAERR, "invalid directory creation mode '%s'", 185 dmode_c); 186 cnf->homemode = getmode(set, _DEF_DIRMODE); 187 free(set); 188 } 189 190 /* 191 * If we'll need to use it or we're updating it, 192 * then create the base home directory if necessary 193 */ 194 if (arg != NULL || getarg(args, 'm') != NULL) { 195 int l = strlen(cnf->home); 196 197 if (l > 1 && cnf->home[l-1] == '/') /* Shave off any trailing path delimiter */ 198 cnf->home[--l] = '\0'; 199 200 if (l < 2 || *cnf->home != '/') /* Check for absolute path name */ 201 errx(EX_DATAERR, "invalid base directory for home '%s'", cnf->home); 202 203 if (stat(cnf->home, &st) == -1) { 204 char dbuf[MAXPATHLEN]; 205 206 /* 207 * This is a kludge especially for Joerg :) 208 * If the home directory would be created in the root partition, then 209 * we really create it under /usr which is likely to have more space. 210 * But we create a symlink from cnf->home -> "/usr" -> cnf->home 211 */ 212 if (strchr(cnf->home+1, '/') == NULL) { 213 snprintf(dbuf, MAXPATHLEN, "/usr%s", cnf->home); 214 if (mkdir(dbuf, _DEF_DIRMODE) != -1 || errno == EEXIST) { 215 chown(dbuf, 0, 0); 216 /* 217 * Skip first "/" and create symlink: 218 * /home -> usr/home 219 */ 220 symlink(dbuf+1, cnf->home); 221 } 222 /* If this falls, fall back to old method */ 223 } 224 strlcpy(dbuf, cnf->home, sizeof(dbuf)); 225 p = dbuf; 226 if (stat(dbuf, &st) == -1) { 227 while ((p = strchr(p + 1, '/')) != NULL) { 228 *p = '\0'; 229 if (stat(dbuf, &st) == -1) { 230 if (mkdir(dbuf, _DEF_DIRMODE) == -1) 231 goto direrr; 232 chown(dbuf, 0, 0); 233 } else if (!S_ISDIR(st.st_mode)) 234 errx(EX_OSFILE, "'%s' (root home parent) is not a directory", dbuf); 235 *p = '/'; 236 } 237 } 238 if (stat(dbuf, &st) == -1) { 239 if (mkdir(dbuf, _DEF_DIRMODE) == -1) { 240 direrr: err(EX_OSFILE, "mkdir '%s'", dbuf); 241 } 242 chown(dbuf, 0, 0); 243 } 244 } else if (!S_ISDIR(st.st_mode)) 245 errx(EX_OSFILE, "root home `%s' is not a directory", cnf->home); 246 } 247 248 if ((arg = getarg(args, 'e')) != NULL) 249 cnf->expire_days = atoi(arg->val); 250 251 if ((arg = getarg(args, 'y')) != NULL) 252 cnf->nispasswd = arg->val; 253 254 if ((arg = getarg(args, 'p')) != NULL && arg->val) 255 cnf->password_days = atoi(arg->val); 256 257 if ((arg = getarg(args, 'g')) != NULL) { 258 if (!*(p = arg->val)) /* Handle empty group list specially */ 259 cnf->default_group = ""; 260 else { 261 if ((grp = GETGRNAM(p)) == NULL) { 262 if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 263 errx(EX_NOUSER, "group `%s' does not exist", p); 264 } 265 cnf->default_group = newstr(grp->gr_name); 266 } 267 } 268 if ((arg = getarg(args, 'L')) != NULL) 269 cnf->default_class = pw_checkname(arg->val, 0); 270 271 if ((arg = getarg(args, 'G')) != NULL && arg->val) { 272 int i = 0; 273 274 for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) { 275 if ((grp = GETGRNAM(p)) == NULL) { 276 if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 277 errx(EX_NOUSER, "group `%s' does not exist", p); 278 } 279 if (extendarray(&cnf->groups, &cnf->numgroups, i + 2) != -1) 280 cnf->groups[i++] = newstr(grp->gr_name); 281 } 282 while (i < cnf->numgroups) 283 cnf->groups[i++] = NULL; 284 } 285 286 if ((arg = getarg(args, 'k')) != NULL) { 287 if (stat(cnf->dotdir = arg->val, &st) == -1 || !S_ISDIR(st.st_mode)) 288 errx(EX_OSFILE, "skeleton `%s' is not a directory or does not exist", cnf->dotdir); 289 } 290 291 if ((arg = getarg(args, 's')) != NULL) 292 cnf->shell_default = arg->val; 293 294 if ((arg = getarg(args, 'w')) != NULL) 295 cnf->default_password = boolean_val(arg->val, cnf->default_password); 296 if (mode == M_ADD && getarg(args, 'D')) { 297 if (getarg(args, 'n') != NULL) 298 errx(EX_DATAERR, "can't combine `-D' with `-n name'"); 299 if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 300 if ((cnf->min_uid = (uid_t) atoi(p)) == 0) 301 cnf->min_uid = 1000; 302 if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid) 303 cnf->max_uid = 32000; 304 } 305 if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 306 if ((cnf->min_gid = (gid_t) atoi(p)) == 0) 307 cnf->min_gid = 1000; 308 if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid) 309 cnf->max_gid = 32000; 310 } 311 312 arg = getarg(args, 'C'); 313 if (write_userconfig(arg ? arg->val : NULL)) 314 return EXIT_SUCCESS; 315 err(EX_IOERR, "config udpate"); 316 } 317 318 if (mode == M_PRINT && getarg(args, 'a')) { 319 int v7 = getarg(args, '7') != NULL; 320 SETPWENT(); 321 while ((pwd = GETPWENT()) != NULL) 322 print_user(pwd, 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, '7') != NULL); 366 } 367 if (a_name == NULL) 368 errx(EX_NOUSER, "no such uid `%s'", a_uid->val); 369 errx(EX_NOUSER, "no such user `%s'", a_name->val); 370 } 371 372 if (a_name == NULL) /* May be needed later */ 373 a_name = addarg(args, 'n', newstr(pwd->pw_name)); 374 375 /* 376 * The M_LOCK and M_UNLOCK functions simply add or remove 377 * a "*LOCKED*" prefix from in front of the password to 378 * prevent it decoding correctly, and therefore prevents 379 * access. Of course, this only prevents access via 380 * password authentication (not ssh, kerberos or any 381 * other method that does not use the UNIX password) but 382 * that is a known limitation. 383 */ 384 385 if (mode == M_LOCK) { 386 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) == 0) 387 errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name); 388 asprintf(&passtmp, "%s%s", locked_str, pwd->pw_passwd); 389 if (passtmp == NULL) /* disaster */ 390 errx(EX_UNAVAILABLE, "out of memory"); 391 pwd->pw_passwd = passtmp; 392 edited = 1; 393 } else if (mode == M_UNLOCK) { 394 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) != 0) 395 errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name); 396 pwd->pw_passwd += sizeof(locked_str)-1; 397 edited = 1; 398 } else if (mode == M_DELETE) 399 return (delete_user(cnf, pwd, a_name, 400 getarg(args, 'r') != NULL, mode)); 401 else if (mode == M_PRINT) 402 return print_user(pwd, getarg(args, '7') != NULL); 403 404 /* 405 * The rest is edit code 406 */ 407 if ((arg = getarg(args, 'l')) != NULL) { 408 if (strcmp(pwd->pw_name, "root") == 0) 409 errx(EX_DATAERR, "can't rename `root' account"); 410 pwd->pw_name = pw_checkname(arg->val, 0); 411 edited = 1; 412 } 413 414 if ((arg = getarg(args, 'u')) != NULL && isdigit((unsigned char)*arg->val)) { 415 pwd->pw_uid = (uid_t) atol(arg->val); 416 edited = 1; 417 if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) 418 errx(EX_DATAERR, "can't change uid of `root' account"); 419 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 420 warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name); 421 } 422 423 if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) { /* Already checked this */ 424 gid_t newgid = (gid_t) GETGRNAM(cnf->default_group)->gr_gid; 425 if (newgid != pwd->pw_gid) { 426 edited = 1; 427 pwd->pw_gid = newgid; 428 } 429 } 430 431 if ((arg = getarg(args, 'p')) != NULL) { 432 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 433 if (pwd->pw_change != 0) { 434 pwd->pw_change = 0; 435 edited = 1; 436 } 437 } 438 else { 439 time_t now = time(NULL); 440 time_t expire = parse_date(now, arg->val); 441 442 if (pwd->pw_change != expire) { 443 pwd->pw_change = expire; 444 edited = 1; 445 } 446 } 447 } 448 449 if ((arg = getarg(args, 'e')) != NULL) { 450 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 451 if (pwd->pw_expire != 0) { 452 pwd->pw_expire = 0; 453 edited = 1; 454 } 455 } 456 else { 457 time_t now = time(NULL); 458 time_t expire = parse_date(now, arg->val); 459 460 if (pwd->pw_expire != expire) { 461 pwd->pw_expire = expire; 462 edited = 1; 463 } 464 } 465 } 466 467 if ((arg = getarg(args, 's')) != NULL) { 468 char *shell = shell_path(cnf->shelldir, cnf->shells, arg->val); 469 if (shell == NULL) 470 shell = ""; 471 if (strcmp(shell, pwd->pw_shell) != 0) { 472 pwd->pw_shell = shell; 473 edited = 1; 474 } 475 } 476 477 if (getarg(args, 'L')) { 478 if (cnf->default_class == NULL) 479 cnf->default_class = ""; 480 if (strcmp(pwd->pw_class, cnf->default_class) != 0) { 481 pwd->pw_class = cnf->default_class; 482 edited = 1; 483 } 484 } 485 486 if ((arg = getarg(args, 'd')) != NULL) { 487 if (strcmp(pwd->pw_dir, arg->val)) 488 edited = 1; 489 if (stat(pwd->pw_dir = arg->val, &st) == -1) { 490 if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0) 491 warnx("WARNING: home `%s' does not exist", pwd->pw_dir); 492 } else if (!S_ISDIR(st.st_mode)) 493 warnx("WARNING: home `%s' is not a directory", pwd->pw_dir); 494 } 495 496 if ((arg = getarg(args, 'w')) != NULL && 497 getarg(args, 'h') == NULL && getarg(args, 'H') == NULL) { 498 login_cap_t *lc; 499 500 lc = login_getpwclass(pwd); 501 if (lc == NULL || 502 login_setcryptfmt(lc, "sha512", NULL) == NULL) 503 warn("setting crypt(3) format"); 504 login_close(lc); 505 pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 506 edited = 1; 507 } 508 509 } else { 510 login_cap_t *lc; 511 512 /* 513 * Add code 514 */ 515 516 if (a_name == NULL) /* Required */ 517 errx(EX_DATAERR, "login name required"); 518 else if ((pwd = GETPWNAM(a_name->val)) != NULL) /* Exists */ 519 errx(EX_DATAERR, "login name `%s' already exists", a_name->val); 520 521 /* 522 * Now, set up defaults for a new user 523 */ 524 pwd = &fakeuser; 525 pwd->pw_name = a_name->val; 526 pwd->pw_class = cnf->default_class ? cnf->default_class : ""; 527 pwd->pw_uid = pw_uidpolicy(cnf, args); 528 pwd->pw_gid = pw_gidpolicy(args, pwd->pw_name, (gid_t) pwd->pw_uid); 529 pwd->pw_change = pw_pwdpolicy(cnf, args); 530 pwd->pw_expire = pw_exppolicy(cnf, args); 531 pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name); 532 pwd->pw_shell = pw_shellpolicy(cnf, args, NULL); 533 lc = login_getpwclass(pwd); 534 if (lc == NULL || login_setcryptfmt(lc, "sha512", NULL) == NULL) 535 warn("setting crypt(3) format"); 536 login_close(lc); 537 pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 538 edited = 1; 539 540 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 541 warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name); 542 } 543 544 /* 545 * Shared add/edit code 546 */ 547 if ((arg = getarg(args, 'c')) != NULL) { 548 char *gecos = pw_checkname(arg->val, 1); 549 if (strcmp(pwd->pw_gecos, gecos) != 0) { 550 pwd->pw_gecos = gecos; 551 edited = 1; 552 } 553 } 554 555 if ((arg = getarg(args, 'h')) != NULL || 556 (arg = getarg(args, 'H')) != NULL) { 557 if (strcmp(arg->val, "-") == 0) { 558 if (!pwd->pw_passwd || *pwd->pw_passwd != '*') { 559 pwd->pw_passwd = "*"; /* No access */ 560 edited = 1; 561 } 562 } else { 563 int fd = atoi(arg->val); 564 int precrypt = (arg->ch == 'H'); 565 int b; 566 int istty = isatty(fd); 567 struct termios t; 568 login_cap_t *lc; 569 570 if (istty) { 571 if (tcgetattr(fd, &t) == -1) 572 istty = 0; 573 else { 574 struct termios n = t; 575 576 /* Disable echo */ 577 n.c_lflag &= ~(ECHO); 578 tcsetattr(fd, TCSANOW, &n); 579 printf("%s%spassword for user %s:", 580 (mode == M_UPDATE) ? "new " : "", 581 precrypt ? "encrypted " : "", 582 pwd->pw_name); 583 fflush(stdout); 584 } 585 } 586 b = read(fd, line, sizeof(line) - 1); 587 if (istty) { /* Restore state */ 588 tcsetattr(fd, TCSANOW, &t); 589 fputc('\n', stdout); 590 fflush(stdout); 591 } 592 if (b < 0) 593 err(EX_IOERR, "-%c file descriptor", 594 precrypt ? 'H' : 'h'); 595 line[b] = '\0'; 596 if ((p = strpbrk(line, "\r\n")) != NULL) 597 *p = '\0'; 598 if (!*line) 599 errx(EX_DATAERR, "empty password read on file descriptor %d", fd); 600 if (precrypt) { 601 if (strchr(line, ':') != NULL) 602 return EX_DATAERR; 603 pwd->pw_passwd = line; 604 } else { 605 lc = login_getpwclass(pwd); 606 if (lc == NULL || 607 login_setcryptfmt(lc, "sha512", NULL) == NULL) 608 warn("setting crypt(3) format"); 609 login_close(lc); 610 pwd->pw_passwd = pw_pwcrypt(line); 611 } 612 edited = 1; 613 } 614 } 615 616 /* 617 * Special case: -N only displays & exits 618 */ 619 if (conf.dryrun) 620 return print_user(pwd, getarg(args, '7') != NULL); 621 622 if (mode == M_ADD) { 623 edited = 1; /* Always */ 624 rc = addpwent(pwd); 625 if (rc == -1) 626 errx(EX_IOERR, "user '%s' already exists", 627 pwd->pw_name); 628 else if (rc != 0) 629 err(EX_IOERR, "passwd file update"); 630 if (cnf->nispasswd && *cnf->nispasswd=='/') { 631 rc = addnispwent(cnf->nispasswd, pwd); 632 if (rc == -1) 633 warnx("User '%s' already exists in NIS passwd", pwd->pw_name); 634 else 635 warn("NIS passwd update"); 636 /* NOTE: we treat NIS-only update errors as non-fatal */ 637 } 638 } else if (mode == M_UPDATE || mode == M_LOCK || mode == M_UNLOCK) { 639 if (edited) { /* Only updated this if required */ 640 rc = chgpwent(a_name->val, pwd); 641 if (rc == -1) 642 errx(EX_IOERR, "user '%s' does not exist (NIS?)", pwd->pw_name); 643 else if (rc != 0) 644 err(EX_IOERR, "passwd file update"); 645 if ( cnf->nispasswd && *cnf->nispasswd=='/') { 646 rc = chgnispwent(cnf->nispasswd, a_name->val, pwd); 647 if (rc == -1) 648 warn("User '%s' not found in NIS passwd", pwd->pw_name); 649 else 650 warn("NIS passwd update"); 651 /* NOTE: NIS-only update errors are not fatal */ 652 } 653 } 654 } 655 656 /* 657 * Ok, user is created or changed - now edit group file 658 */ 659 660 if (mode == M_ADD || getarg(args, 'G') != NULL) { 661 int i, j; 662 /* First remove the user from all group */ 663 SETGRENT(); 664 while ((grp = GETGRENT()) != NULL) { 665 char group[MAXLOGNAME]; 666 if (grp->gr_mem == NULL) 667 continue; 668 for (i = 0; grp->gr_mem[i] != NULL; i++) { 669 if (strcmp(grp->gr_mem[i] , pwd->pw_name) != 0) 670 continue; 671 for (j = i; grp->gr_mem[j] != NULL ; j++) 672 grp->gr_mem[j] = grp->gr_mem[j+1]; 673 strlcpy(group, grp->gr_name, MAXLOGNAME); 674 chggrent(group, grp); 675 } 676 } 677 ENDGRENT(); 678 679 /* now add to group where needed */ 680 for (i = 0; cnf->groups[i] != NULL; i++) { 681 grp = GETGRNAM(cnf->groups[i]); 682 grp = gr_add(grp, pwd->pw_name); 683 /* 684 * grp can only be NULL in 2 cases: 685 * - the new member is already a member 686 * - a problem with memory occurs 687 * in both cases we want to skip now. 688 */ 689 if (grp == NULL) 690 continue; 691 chggrent(cnf->groups[i], grp); 692 free(grp); 693 } 694 } 695 696 697 /* go get a current version of pwd */ 698 pwd = GETPWNAM(a_name->val); 699 if (pwd == NULL) { 700 /* This will fail when we rename, so special case that */ 701 if (mode == M_UPDATE && (arg = getarg(args, 'l')) != NULL) { 702 a_name->val = arg->val; /* update new name */ 703 pwd = GETPWNAM(a_name->val); /* refetch renamed rec */ 704 } 705 } 706 if (pwd == NULL) /* can't go on without this */ 707 errx(EX_NOUSER, "user '%s' disappeared during update", a_name->val); 708 709 grp = GETGRGID(pwd->pw_gid); 710 pw_log(cnf, mode, W_USER, "%s(%u):%s(%u):%s:%s:%s", 711 pwd->pw_name, pwd->pw_uid, 712 grp ? grp->gr_name : "unknown", (grp ? grp->gr_gid : (uid_t)-1), 713 pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 714 715 /* 716 * If adding, let's touch and chown the user's mail file. This is not 717 * strictly necessary under BSD with a 0755 maildir but it also 718 * doesn't hurt anything to create the empty mailfile 719 */ 720 if (mode == M_ADD) { 721 if (PWALTDIR() != PWF_ALT) { 722 arg = getarg(args, 'R'); 723 snprintf(path, sizeof(path), "%s%s/%s", 724 arg ? arg->val : "", _PATH_MAILDIR, pwd->pw_name); 725 close(open(path, O_RDWR | O_CREAT, 0600)); /* Preserve contents & 726 * mtime */ 727 chown(path, pwd->pw_uid, pwd->pw_gid); 728 } 729 } 730 731 /* 732 * Let's create and populate the user's home directory. Note 733 * that this also `works' for editing users if -m is used, but 734 * existing files will *not* be overwritten. 735 */ 736 if (PWALTDIR() != PWF_ALT && getarg(args, 'm') != NULL && pwd->pw_dir && 737 *pwd->pw_dir == '/' && pwd->pw_dir[1]) 738 create_and_populate_homedir(mode, pwd); 739 740 /* 741 * Finally, send mail to the new user as well, if we are asked to 742 */ 743 if (mode == M_ADD && !PWALTDIR() && cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) { 744 FILE *pfp = popen(_PATH_SENDMAIL " -t", "w"); 745 746 if (pfp == NULL) 747 warn("sendmail"); 748 else { 749 fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name); 750 while (fgets(line, sizeof(line), fp) != NULL) { 751 /* Do substitutions? */ 752 fputs(line, pfp); 753 } 754 pclose(pfp); 755 pw_log(cnf, mode, W_USER, "%s(%u) new user mail sent", 756 pwd->pw_name, pwd->pw_uid); 757 } 758 fclose(fp); 759 } 760 761 return EXIT_SUCCESS; 762} 763 764 765static uid_t 766pw_uidpolicy(struct userconf * cnf, struct cargs * args) 767{ 768 struct passwd *pwd; 769 uid_t uid = (uid_t) - 1; 770 struct carg *a_uid = getarg(args, 'u'); 771 772 /* 773 * Check the given uid, if any 774 */ 775 if (a_uid != NULL) { 776 uid = (uid_t) atol(a_uid->val); 777 778 if ((pwd = GETPWUID(uid)) != NULL && getarg(args, 'o') == NULL) 779 errx(EX_DATAERR, "uid `%u' has already been allocated", pwd->pw_uid); 780 } else { 781 struct bitmap bm; 782 783 /* 784 * We need to allocate the next available uid under one of 785 * two policies a) Grab the first unused uid b) Grab the 786 * highest possible unused uid 787 */ 788 if (cnf->min_uid >= cnf->max_uid) { /* Sanity 789 * claus^H^H^H^Hheck */ 790 cnf->min_uid = 1000; 791 cnf->max_uid = 32000; 792 } 793 bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1); 794 795 /* 796 * Now, let's fill the bitmap from the password file 797 */ 798 SETPWENT(); 799 while ((pwd = GETPWENT()) != NULL) 800 if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid) 801 bm_setbit(&bm, pwd->pw_uid - cnf->min_uid); 802 ENDPWENT(); 803 804 /* 805 * Then apply the policy, with fallback to reuse if necessary 806 */ 807 if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid) 808 uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid); 809 810 /* 811 * Another sanity check 812 */ 813 if (uid < cnf->min_uid || uid > cnf->max_uid) 814 errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used"); 815 bm_dealloc(&bm); 816 } 817 return uid; 818} 819 820 821static uid_t 822pw_gidpolicy(struct cargs * args, char *nam, gid_t prefer) 823{ 824 struct group *grp; 825 gid_t gid = (uid_t) - 1; 826 struct carg *a_gid = getarg(args, 'g'); 827 struct userconf *cnf = conf.userconf; 828 829 /* 830 * If no arg given, see if default can help out 831 */ 832 if (a_gid == NULL && cnf->default_group && *cnf->default_group) 833 a_gid = addarg(args, 'g', cnf->default_group); 834 835 /* 836 * Check the given gid, if any 837 */ 838 SETGRENT(); 839 if (a_gid != NULL) { 840 if ((grp = GETGRNAM(a_gid->val)) == NULL) { 841 gid = (gid_t) atol(a_gid->val); 842 if ((gid == 0 && !isdigit((unsigned char)*a_gid->val)) || (grp = GETGRGID(gid)) == NULL) 843 errx(EX_NOUSER, "group `%s' is not defined", a_gid->val); 844 } 845 gid = grp->gr_gid; 846 } else if ((grp = GETGRNAM(nam)) != NULL && 847 (grp->gr_mem == NULL || grp->gr_mem[0] == NULL)) { 848 gid = grp->gr_gid; /* Already created? Use it anyway... */ 849 } else { 850 struct cargs grpargs; 851 char tmp[32]; 852 853 LIST_INIT(&grpargs); 854 addarg(&grpargs, 'n', nam); 855 856 /* 857 * We need to auto-create a group with the user's name. We 858 * can send all the appropriate output to our sister routine 859 * bit first see if we can create a group with gid==uid so we 860 * can keep the user and group ids in sync. We purposely do 861 * NOT check the gid range if we can force the sync. If the 862 * user's name dups an existing group, then the group add 863 * function will happily handle that case for us and exit. 864 */ 865 if (GETGRGID(prefer) == NULL) { 866 snprintf(tmp, sizeof(tmp), "%u", prefer); 867 addarg(&grpargs, 'g', tmp); 868 } 869 if (conf.dryrun) { 870 addarg(&grpargs, 'q', NULL); 871 gid = pw_group(M_NEXT, &grpargs); 872 } 873 else 874 { 875 pw_group(M_ADD, &grpargs); 876 if ((grp = GETGRNAM(nam)) != NULL) 877 gid = grp->gr_gid; 878 } 879 a_gid = LIST_FIRST(&grpargs); 880 while (a_gid != NULL) { 881 struct carg *t = LIST_NEXT(a_gid, list); 882 LIST_REMOVE(a_gid, list); 883 a_gid = t; 884 } 885 } 886 ENDGRENT(); 887 return gid; 888} 889 890 891static time_t 892pw_pwdpolicy(struct userconf * cnf, struct cargs * args) 893{ 894 time_t result = 0; 895 time_t now = time(NULL); 896 struct carg *arg = getarg(args, 'p'); 897 898 if (arg != NULL) { 899 if ((result = parse_date(now, arg->val)) == now) 900 errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 901 } else if (cnf->password_days > 0) 902 result = now + ((long) cnf->password_days * 86400L); 903 return result; 904} 905 906 907static time_t 908pw_exppolicy(struct userconf * cnf, struct cargs * args) 909{ 910 time_t result = 0; 911 time_t now = time(NULL); 912 struct carg *arg = getarg(args, 'e'); 913 914 if (arg != NULL) { 915 if ((result = parse_date(now, arg->val)) == now) 916 errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 917 } else if (cnf->expire_days > 0) 918 result = now + ((long) cnf->expire_days * 86400L); 919 return result; 920} 921 922 923static char * 924pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user) 925{ 926 struct carg *arg = getarg(args, 'd'); 927 static char home[128]; 928 929 if (arg) 930 return (arg->val); 931 932 if (cnf->home == NULL || *cnf->home == '\0') 933 errx(EX_CONFIG, "no base home directory set"); 934 snprintf(home, sizeof(home), "%s/%s", cnf->home, user); 935 936 return (home); 937} 938 939static char * 940shell_path(char const * path, char *shells[], char *sh) 941{ 942 if (sh != NULL && (*sh == '/' || *sh == '\0')) 943 return sh; /* specified full path or forced none */ 944 else { 945 char *p; 946 char paths[_UC_MAXLINE]; 947 948 /* 949 * We need to search paths 950 */ 951 strlcpy(paths, path, sizeof(paths)); 952 for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) { 953 int i; 954 static char shellpath[256]; 955 956 if (sh != NULL) { 957 snprintf(shellpath, sizeof(shellpath), "%s/%s", p, sh); 958 if (access(shellpath, X_OK) == 0) 959 return shellpath; 960 } else 961 for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) { 962 snprintf(shellpath, sizeof(shellpath), "%s/%s", p, shells[i]); 963 if (access(shellpath, X_OK) == 0) 964 return shellpath; 965 } 966 } 967 if (sh == NULL) 968 errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh); 969 errx(EX_CONFIG, "no default shell available or defined"); 970 return NULL; 971 } 972} 973 974 975static char * 976pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell) 977{ 978 char *sh = newshell; 979 struct carg *arg = getarg(args, 's'); 980 981 if (newshell == NULL && arg != NULL) 982 sh = arg->val; 983 return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default); 984} 985 986#define SALTSIZE 32 987 988static char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./"; 989 990char * 991pw_pwcrypt(char *password) 992{ 993 int i; 994 char salt[SALTSIZE + 1]; 995 char *cryptpw; 996 997 static char buf[256]; 998 999 /* 1000 * Calculate a salt value 1001 */ 1002 for (i = 0; i < SALTSIZE; i++) 1003 salt[i] = chars[arc4random_uniform(sizeof(chars) - 1)]; 1004 salt[SALTSIZE] = '\0'; 1005 1006 cryptpw = crypt(password, salt); 1007 if (cryptpw == NULL) 1008 errx(EX_CONFIG, "crypt(3) failure"); 1009 return strcpy(buf, cryptpw); 1010} 1011 1012 1013static char * 1014pw_password(struct userconf * cnf, struct cargs * args, char const * user) 1015{ 1016 int i, l; 1017 char pwbuf[32]; 1018 1019 switch (cnf->default_password) { 1020 case -1: /* Random password */ 1021 l = (arc4random() % 8 + 8); /* 8 - 16 chars */ 1022 for (i = 0; i < l; i++) 1023 pwbuf[i] = chars[arc4random_uniform(sizeof(chars)-1)]; 1024 pwbuf[i] = '\0'; 1025 1026 /* 1027 * We give this information back to the user 1028 */ 1029 if (getarg(args, 'h') == NULL && getarg(args, 'H') == NULL && 1030 !conf.dryrun) { 1031 if (isatty(STDOUT_FILENO)) 1032 printf("Password for '%s' is: ", user); 1033 printf("%s\n", pwbuf); 1034 fflush(stdout); 1035 } 1036 break; 1037 1038 case -2: /* No password at all! */ 1039 return ""; 1040 1041 case 0: /* No login - default */ 1042 default: 1043 return "*"; 1044 1045 case 1: /* user's name */ 1046 strlcpy(pwbuf, user, sizeof(pwbuf)); 1047 break; 1048 } 1049 return pw_pwcrypt(pwbuf); 1050} 1051 1052static int 1053delete_user(struct userconf *cnf, struct passwd *pwd, struct carg *a_name, 1054 int delete, int mode) 1055{ 1056 char file[MAXPATHLEN]; 1057 char home[MAXPATHLEN]; 1058 uid_t uid = pwd->pw_uid; 1059 struct group *gr, *grp; 1060 char grname[LOGNAMESIZE]; 1061 int rc; 1062 struct stat st; 1063 1064 if (strcmp(pwd->pw_name, "root") == 0) 1065 errx(EX_DATAERR, "cannot remove user 'root'"); 1066 1067 if (!PWALTDIR()) { 1068 /* 1069 * Remove opie record from /etc/opiekeys 1070 */ 1071 1072 rmopie(pwd->pw_name); 1073 1074 /* 1075 * Remove crontabs 1076 */ 1077 snprintf(file, sizeof(file), "/var/cron/tabs/%s", pwd->pw_name); 1078 if (access(file, F_OK) == 0) { 1079 snprintf(file, sizeof(file), "crontab -u %s -r", pwd->pw_name); 1080 system(file); 1081 } 1082 } 1083 /* 1084 * Save these for later, since contents of pwd may be 1085 * invalidated by deletion 1086 */ 1087 snprintf(file, sizeof(file), "%s/%s", _PATH_MAILDIR, pwd->pw_name); 1088 strlcpy(home, pwd->pw_dir, sizeof(home)); 1089 gr = GETGRGID(pwd->pw_gid); 1090 if (gr != NULL) 1091 strlcpy(grname, gr->gr_name, LOGNAMESIZE); 1092 else 1093 grname[0] = '\0'; 1094 1095 rc = delpwent(pwd); 1096 if (rc == -1) 1097 err(EX_IOERR, "user '%s' does not exist", pwd->pw_name); 1098 else if (rc != 0) 1099 err(EX_IOERR, "passwd update"); 1100 1101 if (cnf->nispasswd && *cnf->nispasswd=='/') { 1102 rc = delnispwent(cnf->nispasswd, a_name->val); 1103 if (rc == -1) 1104 warnx("WARNING: user '%s' does not exist in NIS passwd", pwd->pw_name); 1105 else if (rc != 0) 1106 warn("WARNING: NIS passwd update"); 1107 /* non-fatal */ 1108 } 1109 1110 grp = GETGRNAM(a_name->val); 1111 if (grp != NULL && 1112 (grp->gr_mem == NULL || *grp->gr_mem == NULL) && 1113 strcmp(a_name->val, grname) == 0) 1114 delgrent(GETGRNAM(a_name->val)); 1115 SETGRENT(); 1116 while ((grp = GETGRENT()) != NULL) { 1117 int i, j; 1118 char group[MAXLOGNAME]; 1119 if (grp->gr_mem == NULL) 1120 continue; 1121 1122 for (i = 0; grp->gr_mem[i] != NULL; i++) { 1123 if (strcmp(grp->gr_mem[i], a_name->val) != 0) 1124 continue; 1125 1126 for (j = i; grp->gr_mem[j] != NULL; j++) 1127 grp->gr_mem[j] = grp->gr_mem[j+1]; 1128 strlcpy(group, grp->gr_name, MAXLOGNAME); 1129 chggrent(group, grp); 1130 } 1131 } 1132 ENDGRENT(); 1133 1134 pw_log(cnf, mode, W_USER, "%s(%u) account removed", a_name->val, uid); 1135 1136 if (!PWALTDIR()) { 1137 /* 1138 * Remove mail file 1139 */ 1140 remove(file); 1141 1142 /* 1143 * Remove at jobs 1144 */ 1145 if (getpwuid(uid) == NULL) 1146 rmat(uid); 1147 1148 /* 1149 * Remove home directory and contents 1150 */ 1151 if (delete && *home == '/' && getpwuid(uid) == NULL && 1152 stat(home, &st) != -1) { 1153 rm_r(home, uid); 1154 pw_log(cnf, mode, W_USER, "%s(%u) home '%s' %sremoved", 1155 a_name->val, uid, home, 1156 stat(home, &st) == -1 ? "" : "not completely "); 1157 } 1158 } 1159 1160 return (EXIT_SUCCESS); 1161} 1162 1163static int 1164print_user(struct passwd * pwd, int v7) 1165{ 1166 if (!conf.pretty) { 1167 char *buf; 1168 1169 if (!v7) 1170 pwd->pw_passwd = (pwd->pw_passwd == NULL) ? "" : "*"; 1171 1172 buf = v7 ? pw_make_v7(pwd) : pw_make(pwd); 1173 printf("%s\n", buf); 1174 free(buf); 1175 } else { 1176 int j; 1177 char *p; 1178 struct group *grp = GETGRGID(pwd->pw_gid); 1179 char uname[60] = "User &", office[60] = "[None]", 1180 wphone[60] = "[None]", hphone[60] = "[None]"; 1181 char acexpire[32] = "[None]", pwexpire[32] = "[None]"; 1182 struct tm * tptr; 1183 1184 if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { 1185 strlcpy(uname, p, sizeof(uname)); 1186 if ((p = strtok(NULL, ",")) != NULL) { 1187 strlcpy(office, p, sizeof(office)); 1188 if ((p = strtok(NULL, ",")) != NULL) { 1189 strlcpy(wphone, p, sizeof(wphone)); 1190 if ((p = strtok(NULL, "")) != NULL) { 1191 strlcpy(hphone, p, 1192 sizeof(hphone)); 1193 } 1194 } 1195 } 1196 } 1197 /* 1198 * Handle '&' in gecos field 1199 */ 1200 if ((p = strchr(uname, '&')) != NULL) { 1201 int l = strlen(pwd->pw_name); 1202 int m = strlen(p); 1203 1204 memmove(p + l, p + 1, m); 1205 memmove(p, pwd->pw_name, l); 1206 *p = (char) toupper((unsigned char)*p); 1207 } 1208 if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL) 1209 strftime(acexpire, sizeof acexpire, "%c", tptr); 1210 if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL) 1211 strftime(pwexpire, sizeof pwexpire, "%c", tptr); 1212 printf("Login Name: %-15s #%-12u Group: %-15s #%u\n" 1213 " Full Name: %s\n" 1214 " Home: %-26.26s Class: %s\n" 1215 " Shell: %-26.26s Office: %s\n" 1216 "Work Phone: %-26.26s Home Phone: %s\n" 1217 "Acc Expire: %-26.26s Pwd Expire: %s\n", 1218 pwd->pw_name, pwd->pw_uid, 1219 grp ? grp->gr_name : "(invalid)", pwd->pw_gid, 1220 uname, pwd->pw_dir, pwd->pw_class, 1221 pwd->pw_shell, office, wphone, hphone, 1222 acexpire, pwexpire); 1223 SETGRENT(); 1224 j = 0; 1225 while ((grp=GETGRENT()) != NULL) 1226 { 1227 int i = 0; 1228 if (grp->gr_mem != NULL) { 1229 while (grp->gr_mem[i] != NULL) 1230 { 1231 if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) 1232 { 1233 printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name); 1234 break; 1235 } 1236 ++i; 1237 } 1238 } 1239 } 1240 ENDGRENT(); 1241 printf("%s", j ? "\n" : ""); 1242 } 1243 return EXIT_SUCCESS; 1244} 1245 1246char * 1247pw_checkname(char *name, int gecos) 1248{ 1249 char showch[8]; 1250 const char *badchars, *ch, *showtype; 1251 int reject; 1252 1253 ch = name; 1254 reject = 0; 1255 if (gecos) { 1256 /* See if the name is valid as a gecos (comment) field. */ 1257 badchars = ":!@"; 1258 showtype = "gecos field"; 1259 } else { 1260 /* See if the name is valid as a userid or group. */ 1261 badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\""; 1262 showtype = "userid/group name"; 1263 /* Userids and groups can not have a leading '-'. */ 1264 if (*ch == '-') 1265 reject = 1; 1266 } 1267 if (!reject) { 1268 while (*ch) { 1269 if (strchr(badchars, *ch) != NULL || *ch < ' ' || 1270 *ch == 127) { 1271 reject = 1; 1272 break; 1273 } 1274 /* 8-bit characters are only allowed in GECOS fields */ 1275 if (!gecos && (*ch & 0x80)) { 1276 reject = 1; 1277 break; 1278 } 1279 ch++; 1280 } 1281 } 1282 /* 1283 * A `$' is allowed as the final character for userids and groups, 1284 * mainly for the benefit of samba. 1285 */ 1286 if (reject && !gecos) { 1287 if (*ch == '$' && *(ch + 1) == '\0') { 1288 reject = 0; 1289 ch++; 1290 } 1291 } 1292 if (reject) { 1293 snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127) 1294 ? "`%c'" : "0x%02x", *ch); 1295 errx(EX_DATAERR, "invalid character %s at position %td in %s", 1296 showch, (ch - name), showtype); 1297 } 1298 if (!gecos && (ch - name) > LOGNAMESIZE) 1299 errx(EX_DATAERR, "name too long `%s' (max is %d)", name, 1300 LOGNAMESIZE); 1301 1302 return (name); 1303} 1304 1305 1306static void 1307rmat(uid_t uid) 1308{ 1309 DIR *d = opendir("/var/at/jobs"); 1310 1311 if (d != NULL) { 1312 struct dirent *e; 1313 1314 while ((e = readdir(d)) != NULL) { 1315 struct stat st; 1316 1317 if (strncmp(e->d_name, ".lock", 5) != 0 && 1318 stat(e->d_name, &st) == 0 && 1319 !S_ISDIR(st.st_mode) && 1320 st.st_uid == uid) { 1321 char tmp[MAXPATHLEN]; 1322 1323 snprintf(tmp, sizeof(tmp), "/usr/bin/atrm %s", e->d_name); 1324 system(tmp); 1325 } 1326 } 1327 closedir(d); 1328 } 1329} 1330 1331static void 1332rmopie(char const * name) 1333{ 1334 static const char etcopie[] = "/etc/opiekeys"; 1335 FILE *fp = fopen(etcopie, "r+"); 1336 1337 if (fp != NULL) { 1338 char tmp[1024]; 1339 off_t atofs = 0; 1340 int length = strlen(name); 1341 1342 while (fgets(tmp, sizeof tmp, fp) != NULL) { 1343 if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') { 1344 if (fseek(fp, atofs, SEEK_SET) == 0) { 1345 fwrite("#", 1, 1, fp); /* Comment username out */ 1346 } 1347 break; 1348 } 1349 atofs = ftell(fp); 1350 } 1351 /* 1352 * If we got an error of any sort, don't update! 1353 */ 1354 fclose(fp); 1355 } 1356} 1357 1358