pw_user.c revision 284126
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 284126 2015-06-07 15:54:57Z 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); 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 SETPWENT(); 320 while ((pwd = GETPWENT()) != NULL) 321 print_user(pwd); 322 ENDPWENT(); 323 return EXIT_SUCCESS; 324 } 325 326 if ((a_name = getarg(args, 'n')) != NULL) 327 pwd = GETPWNAM(pw_checkname(a_name->val, 0)); 328 a_uid = getarg(args, 'u'); 329 330 if (a_uid == NULL) { 331 if (a_name == NULL) 332 errx(EX_DATAERR, "user name or id required"); 333 334 /* 335 * Determine whether 'n' switch is name or uid - we don't 336 * really don't really care which we have, but we need to 337 * know. 338 */ 339 if (mode != M_ADD && pwd == NULL 340 && strspn(a_name->val, "0123456789") == strlen(a_name->val) 341 && *a_name->val) { 342 (a_uid = a_name)->ch = 'u'; 343 a_name = NULL; 344 } 345 } else { 346 if (strspn(a_uid->val, "0123456789") != strlen(a_uid->val)) 347 errx(EX_USAGE, "-u expects a number"); 348 } 349 350 /* 351 * Update, delete & print require that the user exists 352 */ 353 if (mode == M_UPDATE || mode == M_DELETE || 354 mode == M_PRINT || mode == M_LOCK || mode == M_UNLOCK) { 355 356 if (a_name == NULL && pwd == NULL) /* Try harder */ 357 pwd = GETPWUID(atoi(a_uid->val)); 358 359 if (pwd == NULL) { 360 if (mode == M_PRINT && getarg(args, 'F')) { 361 fakeuser.pw_name = a_name ? a_name->val : "nouser"; 362 fakeuser.pw_uid = a_uid ? (uid_t) atol(a_uid->val) : (uid_t) -1; 363 return print_user(&fakeuser); 364 } 365 if (a_name == NULL) 366 errx(EX_NOUSER, "no such uid `%s'", a_uid->val); 367 errx(EX_NOUSER, "no such user `%s'", a_name->val); 368 } 369 370 if (a_name == NULL) /* May be needed later */ 371 a_name = addarg(args, 'n', newstr(pwd->pw_name)); 372 373 /* 374 * The M_LOCK and M_UNLOCK functions simply add or remove 375 * a "*LOCKED*" prefix from in front of the password to 376 * prevent it decoding correctly, and therefore prevents 377 * access. Of course, this only prevents access via 378 * password authentication (not ssh, kerberos or any 379 * other method that does not use the UNIX password) but 380 * that is a known limitation. 381 */ 382 383 if (mode == M_LOCK) { 384 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) == 0) 385 errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name); 386 asprintf(&passtmp, "%s%s", locked_str, pwd->pw_passwd); 387 if (passtmp == NULL) /* disaster */ 388 errx(EX_UNAVAILABLE, "out of memory"); 389 pwd->pw_passwd = passtmp; 390 edited = 1; 391 } else if (mode == M_UNLOCK) { 392 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) != 0) 393 errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name); 394 pwd->pw_passwd += sizeof(locked_str)-1; 395 edited = 1; 396 } else if (mode == M_DELETE) 397 return (delete_user(cnf, pwd, a_name, 398 getarg(args, 'r') != NULL, mode)); 399 else if (mode == M_PRINT) 400 return print_user(pwd); 401 402 /* 403 * The rest is edit code 404 */ 405 if ((arg = getarg(args, 'l')) != NULL) { 406 if (strcmp(pwd->pw_name, "root") == 0) 407 errx(EX_DATAERR, "can't rename `root' account"); 408 pwd->pw_name = pw_checkname(arg->val, 0); 409 edited = 1; 410 } 411 412 if ((arg = getarg(args, 'u')) != NULL && isdigit((unsigned char)*arg->val)) { 413 pwd->pw_uid = (uid_t) atol(arg->val); 414 edited = 1; 415 if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) 416 errx(EX_DATAERR, "can't change uid of `root' account"); 417 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 418 warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name); 419 } 420 421 if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) { /* Already checked this */ 422 gid_t newgid = (gid_t) GETGRNAM(cnf->default_group)->gr_gid; 423 if (newgid != pwd->pw_gid) { 424 edited = 1; 425 pwd->pw_gid = newgid; 426 } 427 } 428 429 if ((arg = getarg(args, 'p')) != NULL) { 430 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 431 if (pwd->pw_change != 0) { 432 pwd->pw_change = 0; 433 edited = 1; 434 } 435 } 436 else { 437 time_t now = time(NULL); 438 time_t expire = parse_date(now, arg->val); 439 440 if (pwd->pw_change != expire) { 441 pwd->pw_change = expire; 442 edited = 1; 443 } 444 } 445 } 446 447 if ((arg = getarg(args, 'e')) != NULL) { 448 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 449 if (pwd->pw_expire != 0) { 450 pwd->pw_expire = 0; 451 edited = 1; 452 } 453 } 454 else { 455 time_t now = time(NULL); 456 time_t expire = parse_date(now, arg->val); 457 458 if (pwd->pw_expire != expire) { 459 pwd->pw_expire = expire; 460 edited = 1; 461 } 462 } 463 } 464 465 if ((arg = getarg(args, 's')) != NULL) { 466 char *shell = shell_path(cnf->shelldir, cnf->shells, arg->val); 467 if (shell == NULL) 468 shell = ""; 469 if (strcmp(shell, pwd->pw_shell) != 0) { 470 pwd->pw_shell = shell; 471 edited = 1; 472 } 473 } 474 475 if (getarg(args, 'L')) { 476 if (cnf->default_class == NULL) 477 cnf->default_class = ""; 478 if (strcmp(pwd->pw_class, cnf->default_class) != 0) { 479 pwd->pw_class = cnf->default_class; 480 edited = 1; 481 } 482 } 483 484 if ((arg = getarg(args, 'd')) != NULL) { 485 if (strcmp(pwd->pw_dir, arg->val)) 486 edited = 1; 487 if (stat(pwd->pw_dir = arg->val, &st) == -1) { 488 if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0) 489 warnx("WARNING: home `%s' does not exist", pwd->pw_dir); 490 } else if (!S_ISDIR(st.st_mode)) 491 warnx("WARNING: home `%s' is not a directory", pwd->pw_dir); 492 } 493 494 if ((arg = getarg(args, 'w')) != NULL && 495 getarg(args, 'h') == NULL && getarg(args, 'H') == NULL) { 496 login_cap_t *lc; 497 498 lc = login_getpwclass(pwd); 499 if (lc == NULL || 500 login_setcryptfmt(lc, "sha512", NULL) == NULL) 501 warn("setting crypt(3) format"); 502 login_close(lc); 503 pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 504 edited = 1; 505 } 506 507 } else { 508 login_cap_t *lc; 509 510 /* 511 * Add code 512 */ 513 514 if (a_name == NULL) /* Required */ 515 errx(EX_DATAERR, "login name required"); 516 else if ((pwd = GETPWNAM(a_name->val)) != NULL) /* Exists */ 517 errx(EX_DATAERR, "login name `%s' already exists", a_name->val); 518 519 /* 520 * Now, set up defaults for a new user 521 */ 522 pwd = &fakeuser; 523 pwd->pw_name = a_name->val; 524 pwd->pw_class = cnf->default_class ? cnf->default_class : ""; 525 pwd->pw_uid = pw_uidpolicy(cnf, args); 526 pwd->pw_gid = pw_gidpolicy(args, pwd->pw_name, (gid_t) pwd->pw_uid); 527 pwd->pw_change = pw_pwdpolicy(cnf, args); 528 pwd->pw_expire = pw_exppolicy(cnf, args); 529 pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name); 530 pwd->pw_shell = pw_shellpolicy(cnf, args, NULL); 531 lc = login_getpwclass(pwd); 532 if (lc == NULL || login_setcryptfmt(lc, "sha512", NULL) == NULL) 533 warn("setting crypt(3) format"); 534 login_close(lc); 535 pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 536 edited = 1; 537 538 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 539 warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name); 540 } 541 542 /* 543 * Shared add/edit code 544 */ 545 if ((arg = getarg(args, 'c')) != NULL) { 546 char *gecos = pw_checkname(arg->val, 1); 547 if (strcmp(pwd->pw_gecos, gecos) != 0) { 548 pwd->pw_gecos = gecos; 549 edited = 1; 550 } 551 } 552 553 if ((arg = getarg(args, 'h')) != NULL || 554 (arg = getarg(args, 'H')) != NULL) { 555 if (strcmp(arg->val, "-") == 0) { 556 if (!pwd->pw_passwd || *pwd->pw_passwd != '*') { 557 pwd->pw_passwd = "*"; /* No access */ 558 edited = 1; 559 } 560 } else { 561 int fd = atoi(arg->val); 562 int precrypt = (arg->ch == 'H'); 563 int b; 564 int istty = isatty(fd); 565 struct termios t; 566 login_cap_t *lc; 567 568 if (istty) { 569 if (tcgetattr(fd, &t) == -1) 570 istty = 0; 571 else { 572 struct termios n = t; 573 574 /* Disable echo */ 575 n.c_lflag &= ~(ECHO); 576 tcsetattr(fd, TCSANOW, &n); 577 printf("%s%spassword for user %s:", 578 (mode == M_UPDATE) ? "new " : "", 579 precrypt ? "encrypted " : "", 580 pwd->pw_name); 581 fflush(stdout); 582 } 583 } 584 b = read(fd, line, sizeof(line) - 1); 585 if (istty) { /* Restore state */ 586 tcsetattr(fd, TCSANOW, &t); 587 fputc('\n', stdout); 588 fflush(stdout); 589 } 590 if (b < 0) 591 err(EX_IOERR, "-%c file descriptor", 592 precrypt ? 'H' : 'h'); 593 line[b] = '\0'; 594 if ((p = strpbrk(line, "\r\n")) != NULL) 595 *p = '\0'; 596 if (!*line) 597 errx(EX_DATAERR, "empty password read on file descriptor %d", fd); 598 if (precrypt) { 599 if (strchr(line, ':') != NULL) 600 return EX_DATAERR; 601 pwd->pw_passwd = line; 602 } else { 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_pwcrypt(line); 609 } 610 edited = 1; 611 } 612 } 613 614 /* 615 * Special case: -N only displays & exits 616 */ 617 if (conf.dryrun) 618 return print_user(pwd); 619 620 if (mode == M_ADD) { 621 edited = 1; /* Always */ 622 rc = addpwent(pwd); 623 if (rc == -1) 624 errx(EX_IOERR, "user '%s' already exists", 625 pwd->pw_name); 626 else if (rc != 0) 627 err(EX_IOERR, "passwd file update"); 628 if (cnf->nispasswd && *cnf->nispasswd=='/') { 629 rc = addnispwent(cnf->nispasswd, pwd); 630 if (rc == -1) 631 warnx("User '%s' already exists in NIS passwd", pwd->pw_name); 632 else 633 warn("NIS passwd update"); 634 /* NOTE: we treat NIS-only update errors as non-fatal */ 635 } 636 } else if (mode == M_UPDATE || mode == M_LOCK || mode == M_UNLOCK) { 637 if (edited) { /* Only updated this if required */ 638 rc = chgpwent(a_name->val, pwd); 639 if (rc == -1) 640 errx(EX_IOERR, "user '%s' does not exist (NIS?)", pwd->pw_name); 641 else if (rc != 0) 642 err(EX_IOERR, "passwd file update"); 643 if ( cnf->nispasswd && *cnf->nispasswd=='/') { 644 rc = chgnispwent(cnf->nispasswd, a_name->val, pwd); 645 if (rc == -1) 646 warn("User '%s' not found in NIS passwd", pwd->pw_name); 647 else 648 warn("NIS passwd update"); 649 /* NOTE: NIS-only update errors are not fatal */ 650 } 651 } 652 } 653 654 /* 655 * Ok, user is created or changed - now edit group file 656 */ 657 658 if (mode == M_ADD || getarg(args, 'G') != NULL) { 659 int i, j; 660 /* First remove the user from all group */ 661 SETGRENT(); 662 while ((grp = GETGRENT()) != NULL) { 663 char group[MAXLOGNAME]; 664 if (grp->gr_mem == NULL) 665 continue; 666 for (i = 0; grp->gr_mem[i] != NULL; i++) { 667 if (strcmp(grp->gr_mem[i] , pwd->pw_name) != 0) 668 continue; 669 for (j = i; grp->gr_mem[j] != NULL ; j++) 670 grp->gr_mem[j] = grp->gr_mem[j+1]; 671 strlcpy(group, grp->gr_name, MAXLOGNAME); 672 chggrent(group, grp); 673 } 674 } 675 ENDGRENT(); 676 677 /* now add to group where needed */ 678 for (i = 0; cnf->groups[i] != NULL; i++) { 679 grp = GETGRNAM(cnf->groups[i]); 680 grp = gr_add(grp, pwd->pw_name); 681 /* 682 * grp can only be NULL in 2 cases: 683 * - the new member is already a member 684 * - a problem with memory occurs 685 * in both cases we want to skip now. 686 */ 687 if (grp == NULL) 688 continue; 689 chggrent(cnf->groups[i], grp); 690 free(grp); 691 } 692 } 693 694 695 /* go get a current version of pwd */ 696 pwd = GETPWNAM(a_name->val); 697 if (pwd == NULL) { 698 /* This will fail when we rename, so special case that */ 699 if (mode == M_UPDATE && (arg = getarg(args, 'l')) != NULL) { 700 a_name->val = arg->val; /* update new name */ 701 pwd = GETPWNAM(a_name->val); /* refetch renamed rec */ 702 } 703 } 704 if (pwd == NULL) /* can't go on without this */ 705 errx(EX_NOUSER, "user '%s' disappeared during update", a_name->val); 706 707 grp = GETGRGID(pwd->pw_gid); 708 pw_log(cnf, mode, W_USER, "%s(%u):%s(%u):%s:%s:%s", 709 pwd->pw_name, pwd->pw_uid, 710 grp ? grp->gr_name : "unknown", (grp ? grp->gr_gid : (uid_t)-1), 711 pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 712 713 /* 714 * If adding, let's touch and chown the user's mail file. This is not 715 * strictly necessary under BSD with a 0755 maildir but it also 716 * doesn't hurt anything to create the empty mailfile 717 */ 718 if (mode == M_ADD) { 719 if (PWALTDIR() != PWF_ALT) { 720 arg = getarg(args, 'R'); 721 snprintf(path, sizeof(path), "%s%s/%s", 722 arg ? arg->val : "", _PATH_MAILDIR, pwd->pw_name); 723 close(open(path, O_RDWR | O_CREAT, 0600)); /* Preserve contents & 724 * mtime */ 725 chown(path, pwd->pw_uid, pwd->pw_gid); 726 } 727 } 728 729 /* 730 * Let's create and populate the user's home directory. Note 731 * that this also `works' for editing users if -m is used, but 732 * existing files will *not* be overwritten. 733 */ 734 if (PWALTDIR() != PWF_ALT && getarg(args, 'm') != NULL && pwd->pw_dir && 735 *pwd->pw_dir == '/' && pwd->pw_dir[1]) 736 create_and_populate_homedir(mode, pwd); 737 738 /* 739 * Finally, send mail to the new user as well, if we are asked to 740 */ 741 if (mode == M_ADD && !PWALTDIR() && cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) { 742 FILE *pfp = popen(_PATH_SENDMAIL " -t", "w"); 743 744 if (pfp == NULL) 745 warn("sendmail"); 746 else { 747 fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name); 748 while (fgets(line, sizeof(line), fp) != NULL) { 749 /* Do substitutions? */ 750 fputs(line, pfp); 751 } 752 pclose(pfp); 753 pw_log(cnf, mode, W_USER, "%s(%u) new user mail sent", 754 pwd->pw_name, pwd->pw_uid); 755 } 756 fclose(fp); 757 } 758 759 return EXIT_SUCCESS; 760} 761 762 763static uid_t 764pw_uidpolicy(struct userconf * cnf, struct cargs * args) 765{ 766 struct passwd *pwd; 767 uid_t uid = (uid_t) - 1; 768 struct carg *a_uid = getarg(args, 'u'); 769 770 /* 771 * Check the given uid, if any 772 */ 773 if (a_uid != NULL) { 774 uid = (uid_t) atol(a_uid->val); 775 776 if ((pwd = GETPWUID(uid)) != NULL && getarg(args, 'o') == NULL) 777 errx(EX_DATAERR, "uid `%u' has already been allocated", pwd->pw_uid); 778 } else { 779 struct bitmap bm; 780 781 /* 782 * We need to allocate the next available uid under one of 783 * two policies a) Grab the first unused uid b) Grab the 784 * highest possible unused uid 785 */ 786 if (cnf->min_uid >= cnf->max_uid) { /* Sanity 787 * claus^H^H^H^Hheck */ 788 cnf->min_uid = 1000; 789 cnf->max_uid = 32000; 790 } 791 bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1); 792 793 /* 794 * Now, let's fill the bitmap from the password file 795 */ 796 SETPWENT(); 797 while ((pwd = GETPWENT()) != NULL) 798 if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid) 799 bm_setbit(&bm, pwd->pw_uid - cnf->min_uid); 800 ENDPWENT(); 801 802 /* 803 * Then apply the policy, with fallback to reuse if necessary 804 */ 805 if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid) 806 uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid); 807 808 /* 809 * Another sanity check 810 */ 811 if (uid < cnf->min_uid || uid > cnf->max_uid) 812 errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used"); 813 bm_dealloc(&bm); 814 } 815 return uid; 816} 817 818 819static uid_t 820pw_gidpolicy(struct cargs * args, char *nam, gid_t prefer) 821{ 822 struct group *grp; 823 gid_t gid = (uid_t) - 1; 824 struct carg *a_gid = getarg(args, 'g'); 825 struct userconf *cnf = conf.userconf; 826 827 /* 828 * If no arg given, see if default can help out 829 */ 830 if (a_gid == NULL && cnf->default_group && *cnf->default_group) 831 a_gid = addarg(args, 'g', cnf->default_group); 832 833 /* 834 * Check the given gid, if any 835 */ 836 SETGRENT(); 837 if (a_gid != NULL) { 838 if ((grp = GETGRNAM(a_gid->val)) == NULL) { 839 gid = (gid_t) atol(a_gid->val); 840 if ((gid == 0 && !isdigit((unsigned char)*a_gid->val)) || (grp = GETGRGID(gid)) == NULL) 841 errx(EX_NOUSER, "group `%s' is not defined", a_gid->val); 842 } 843 gid = grp->gr_gid; 844 } else if ((grp = GETGRNAM(nam)) != NULL && 845 (grp->gr_mem == NULL || grp->gr_mem[0] == NULL)) { 846 gid = grp->gr_gid; /* Already created? Use it anyway... */ 847 } else { 848 struct cargs grpargs; 849 char tmp[32]; 850 851 LIST_INIT(&grpargs); 852 addarg(&grpargs, 'n', nam); 853 854 /* 855 * We need to auto-create a group with the user's name. We 856 * can send all the appropriate output to our sister routine 857 * bit first see if we can create a group with gid==uid so we 858 * can keep the user and group ids in sync. We purposely do 859 * NOT check the gid range if we can force the sync. If the 860 * user's name dups an existing group, then the group add 861 * function will happily handle that case for us and exit. 862 */ 863 if (GETGRGID(prefer) == NULL) { 864 snprintf(tmp, sizeof(tmp), "%u", prefer); 865 addarg(&grpargs, 'g', tmp); 866 } 867 if (conf.dryrun) { 868 addarg(&grpargs, 'q', NULL); 869 gid = pw_group(M_NEXT, &grpargs); 870 } 871 else 872 { 873 pw_group(M_ADD, &grpargs); 874 if ((grp = GETGRNAM(nam)) != NULL) 875 gid = grp->gr_gid; 876 } 877 a_gid = LIST_FIRST(&grpargs); 878 while (a_gid != NULL) { 879 struct carg *t = LIST_NEXT(a_gid, list); 880 LIST_REMOVE(a_gid, list); 881 a_gid = t; 882 } 883 } 884 ENDGRENT(); 885 return gid; 886} 887 888 889static time_t 890pw_pwdpolicy(struct userconf * cnf, struct cargs * args) 891{ 892 time_t result = 0; 893 time_t now = time(NULL); 894 struct carg *arg = getarg(args, 'p'); 895 896 if (arg != NULL) { 897 if ((result = parse_date(now, arg->val)) == now) 898 errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 899 } else if (cnf->password_days > 0) 900 result = now + ((long) cnf->password_days * 86400L); 901 return result; 902} 903 904 905static time_t 906pw_exppolicy(struct userconf * cnf, struct cargs * args) 907{ 908 time_t result = 0; 909 time_t now = time(NULL); 910 struct carg *arg = getarg(args, 'e'); 911 912 if (arg != NULL) { 913 if ((result = parse_date(now, arg->val)) == now) 914 errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 915 } else if (cnf->expire_days > 0) 916 result = now + ((long) cnf->expire_days * 86400L); 917 return result; 918} 919 920 921static char * 922pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user) 923{ 924 struct carg *arg = getarg(args, 'd'); 925 static char home[128]; 926 927 if (arg) 928 return (arg->val); 929 930 if (cnf->home == NULL || *cnf->home == '\0') 931 errx(EX_CONFIG, "no base home directory set"); 932 snprintf(home, sizeof(home), "%s/%s", cnf->home, user); 933 934 return (home); 935} 936 937static char * 938shell_path(char const * path, char *shells[], char *sh) 939{ 940 if (sh != NULL && (*sh == '/' || *sh == '\0')) 941 return sh; /* specified full path or forced none */ 942 else { 943 char *p; 944 char paths[_UC_MAXLINE]; 945 946 /* 947 * We need to search paths 948 */ 949 strlcpy(paths, path, sizeof(paths)); 950 for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) { 951 int i; 952 static char shellpath[256]; 953 954 if (sh != NULL) { 955 snprintf(shellpath, sizeof(shellpath), "%s/%s", p, sh); 956 if (access(shellpath, X_OK) == 0) 957 return shellpath; 958 } else 959 for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) { 960 snprintf(shellpath, sizeof(shellpath), "%s/%s", p, shells[i]); 961 if (access(shellpath, X_OK) == 0) 962 return shellpath; 963 } 964 } 965 if (sh == NULL) 966 errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh); 967 errx(EX_CONFIG, "no default shell available or defined"); 968 return NULL; 969 } 970} 971 972 973static char * 974pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell) 975{ 976 char *sh = newshell; 977 struct carg *arg = getarg(args, 's'); 978 979 if (newshell == NULL && arg != NULL) 980 sh = arg->val; 981 return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default); 982} 983 984#define SALTSIZE 32 985 986static char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./"; 987 988char * 989pw_pwcrypt(char *password) 990{ 991 int i; 992 char salt[SALTSIZE + 1]; 993 char *cryptpw; 994 995 static char buf[256]; 996 997 /* 998 * Calculate a salt value 999 */ 1000 for (i = 0; i < SALTSIZE; i++) 1001 salt[i] = chars[arc4random_uniform(sizeof(chars) - 1)]; 1002 salt[SALTSIZE] = '\0'; 1003 1004 cryptpw = crypt(password, salt); 1005 if (cryptpw == NULL) 1006 errx(EX_CONFIG, "crypt(3) failure"); 1007 return strcpy(buf, cryptpw); 1008} 1009 1010 1011static char * 1012pw_password(struct userconf * cnf, struct cargs * args, char const * user) 1013{ 1014 int i, l; 1015 char pwbuf[32]; 1016 1017 switch (cnf->default_password) { 1018 case -1: /* Random password */ 1019 l = (arc4random() % 8 + 8); /* 8 - 16 chars */ 1020 for (i = 0; i < l; i++) 1021 pwbuf[i] = chars[arc4random_uniform(sizeof(chars)-1)]; 1022 pwbuf[i] = '\0'; 1023 1024 /* 1025 * We give this information back to the user 1026 */ 1027 if (getarg(args, 'h') == NULL && getarg(args, 'H') == NULL && 1028 !conf.dryrun) { 1029 if (isatty(STDOUT_FILENO)) 1030 printf("Password for '%s' is: ", user); 1031 printf("%s\n", pwbuf); 1032 fflush(stdout); 1033 } 1034 break; 1035 1036 case -2: /* No password at all! */ 1037 return ""; 1038 1039 case 0: /* No login - default */ 1040 default: 1041 return "*"; 1042 1043 case 1: /* user's name */ 1044 strlcpy(pwbuf, user, sizeof(pwbuf)); 1045 break; 1046 } 1047 return pw_pwcrypt(pwbuf); 1048} 1049 1050static int 1051delete_user(struct userconf *cnf, struct passwd *pwd, struct carg *a_name, 1052 int delete, int mode) 1053{ 1054 char file[MAXPATHLEN]; 1055 char home[MAXPATHLEN]; 1056 uid_t uid = pwd->pw_uid; 1057 struct group *gr, *grp; 1058 char grname[LOGNAMESIZE]; 1059 int rc; 1060 struct stat st; 1061 1062 if (strcmp(pwd->pw_name, "root") == 0) 1063 errx(EX_DATAERR, "cannot remove user 'root'"); 1064 1065 if (!PWALTDIR()) { 1066 /* 1067 * Remove opie record from /etc/opiekeys 1068 */ 1069 1070 rmopie(pwd->pw_name); 1071 1072 /* 1073 * Remove crontabs 1074 */ 1075 snprintf(file, sizeof(file), "/var/cron/tabs/%s", pwd->pw_name); 1076 if (access(file, F_OK) == 0) { 1077 snprintf(file, sizeof(file), "crontab -u %s -r", pwd->pw_name); 1078 system(file); 1079 } 1080 } 1081 /* 1082 * Save these for later, since contents of pwd may be 1083 * invalidated by deletion 1084 */ 1085 snprintf(file, sizeof(file), "%s/%s", _PATH_MAILDIR, pwd->pw_name); 1086 strlcpy(home, pwd->pw_dir, sizeof(home)); 1087 gr = GETGRGID(pwd->pw_gid); 1088 if (gr != NULL) 1089 strlcpy(grname, gr->gr_name, LOGNAMESIZE); 1090 else 1091 grname[0] = '\0'; 1092 1093 rc = delpwent(pwd); 1094 if (rc == -1) 1095 err(EX_IOERR, "user '%s' does not exist", pwd->pw_name); 1096 else if (rc != 0) 1097 err(EX_IOERR, "passwd update"); 1098 1099 if (cnf->nispasswd && *cnf->nispasswd=='/') { 1100 rc = delnispwent(cnf->nispasswd, a_name->val); 1101 if (rc == -1) 1102 warnx("WARNING: user '%s' does not exist in NIS passwd", pwd->pw_name); 1103 else if (rc != 0) 1104 warn("WARNING: NIS passwd update"); 1105 /* non-fatal */ 1106 } 1107 1108 grp = GETGRNAM(a_name->val); 1109 if (grp != NULL && 1110 (grp->gr_mem == NULL || *grp->gr_mem == NULL) && 1111 strcmp(a_name->val, grname) == 0) 1112 delgrent(GETGRNAM(a_name->val)); 1113 SETGRENT(); 1114 while ((grp = GETGRENT()) != NULL) { 1115 int i, j; 1116 char group[MAXLOGNAME]; 1117 if (grp->gr_mem == NULL) 1118 continue; 1119 1120 for (i = 0; grp->gr_mem[i] != NULL; i++) { 1121 if (strcmp(grp->gr_mem[i], a_name->val) != 0) 1122 continue; 1123 1124 for (j = i; grp->gr_mem[j] != NULL; j++) 1125 grp->gr_mem[j] = grp->gr_mem[j+1]; 1126 strlcpy(group, grp->gr_name, MAXLOGNAME); 1127 chggrent(group, grp); 1128 } 1129 } 1130 ENDGRENT(); 1131 1132 pw_log(cnf, mode, W_USER, "%s(%u) account removed", a_name->val, uid); 1133 1134 if (!PWALTDIR()) { 1135 /* 1136 * Remove mail file 1137 */ 1138 remove(file); 1139 1140 /* 1141 * Remove at jobs 1142 */ 1143 if (getpwuid(uid) == NULL) 1144 rmat(uid); 1145 1146 /* 1147 * Remove home directory and contents 1148 */ 1149 if (delete && *home == '/' && getpwuid(uid) == NULL && 1150 stat(home, &st) != -1) { 1151 rm_r(home, uid); 1152 pw_log(cnf, mode, W_USER, "%s(%u) home '%s' %sremoved", 1153 a_name->val, uid, home, 1154 stat(home, &st) == -1 ? "" : "not completely "); 1155 } 1156 } 1157 1158 return (EXIT_SUCCESS); 1159} 1160 1161static int 1162print_user(struct passwd * pwd) 1163{ 1164 if (!conf.pretty) { 1165 char *buf; 1166 1167 if (!conf.v7) 1168 pwd->pw_passwd = (pwd->pw_passwd == NULL) ? "" : "*"; 1169 1170 buf = conf.v7 ? pw_make_v7(pwd) : pw_make(pwd); 1171 printf("%s\n", buf); 1172 free(buf); 1173 } else { 1174 int j; 1175 char *p; 1176 struct group *grp = GETGRGID(pwd->pw_gid); 1177 char uname[60] = "User &", office[60] = "[None]", 1178 wphone[60] = "[None]", hphone[60] = "[None]"; 1179 char acexpire[32] = "[None]", pwexpire[32] = "[None]"; 1180 struct tm * tptr; 1181 1182 if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { 1183 strlcpy(uname, p, sizeof(uname)); 1184 if ((p = strtok(NULL, ",")) != NULL) { 1185 strlcpy(office, p, sizeof(office)); 1186 if ((p = strtok(NULL, ",")) != NULL) { 1187 strlcpy(wphone, p, sizeof(wphone)); 1188 if ((p = strtok(NULL, "")) != NULL) { 1189 strlcpy(hphone, p, 1190 sizeof(hphone)); 1191 } 1192 } 1193 } 1194 } 1195 /* 1196 * Handle '&' in gecos field 1197 */ 1198 if ((p = strchr(uname, '&')) != NULL) { 1199 int l = strlen(pwd->pw_name); 1200 int m = strlen(p); 1201 1202 memmove(p + l, p + 1, m); 1203 memmove(p, pwd->pw_name, l); 1204 *p = (char) toupper((unsigned char)*p); 1205 } 1206 if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL) 1207 strftime(acexpire, sizeof acexpire, "%c", tptr); 1208 if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL) 1209 strftime(pwexpire, sizeof pwexpire, "%c", tptr); 1210 printf("Login Name: %-15s #%-12u Group: %-15s #%u\n" 1211 " Full Name: %s\n" 1212 " Home: %-26.26s Class: %s\n" 1213 " Shell: %-26.26s Office: %s\n" 1214 "Work Phone: %-26.26s Home Phone: %s\n" 1215 "Acc Expire: %-26.26s Pwd Expire: %s\n", 1216 pwd->pw_name, pwd->pw_uid, 1217 grp ? grp->gr_name : "(invalid)", pwd->pw_gid, 1218 uname, pwd->pw_dir, pwd->pw_class, 1219 pwd->pw_shell, office, wphone, hphone, 1220 acexpire, pwexpire); 1221 SETGRENT(); 1222 j = 0; 1223 while ((grp=GETGRENT()) != NULL) 1224 { 1225 int i = 0; 1226 if (grp->gr_mem != NULL) { 1227 while (grp->gr_mem[i] != NULL) 1228 { 1229 if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) 1230 { 1231 printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name); 1232 break; 1233 } 1234 ++i; 1235 } 1236 } 1237 } 1238 ENDGRENT(); 1239 printf("%s", j ? "\n" : ""); 1240 } 1241 return EXIT_SUCCESS; 1242} 1243 1244char * 1245pw_checkname(char *name, int gecos) 1246{ 1247 char showch[8]; 1248 const char *badchars, *ch, *showtype; 1249 int reject; 1250 1251 ch = name; 1252 reject = 0; 1253 if (gecos) { 1254 /* See if the name is valid as a gecos (comment) field. */ 1255 badchars = ":!@"; 1256 showtype = "gecos field"; 1257 } else { 1258 /* See if the name is valid as a userid or group. */ 1259 badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\""; 1260 showtype = "userid/group name"; 1261 /* Userids and groups can not have a leading '-'. */ 1262 if (*ch == '-') 1263 reject = 1; 1264 } 1265 if (!reject) { 1266 while (*ch) { 1267 if (strchr(badchars, *ch) != NULL || *ch < ' ' || 1268 *ch == 127) { 1269 reject = 1; 1270 break; 1271 } 1272 /* 8-bit characters are only allowed in GECOS fields */ 1273 if (!gecos && (*ch & 0x80)) { 1274 reject = 1; 1275 break; 1276 } 1277 ch++; 1278 } 1279 } 1280 /* 1281 * A `$' is allowed as the final character for userids and groups, 1282 * mainly for the benefit of samba. 1283 */ 1284 if (reject && !gecos) { 1285 if (*ch == '$' && *(ch + 1) == '\0') { 1286 reject = 0; 1287 ch++; 1288 } 1289 } 1290 if (reject) { 1291 snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127) 1292 ? "`%c'" : "0x%02x", *ch); 1293 errx(EX_DATAERR, "invalid character %s at position %td in %s", 1294 showch, (ch - name), showtype); 1295 } 1296 if (!gecos && (ch - name) > LOGNAMESIZE) 1297 errx(EX_DATAERR, "name too long `%s' (max is %d)", name, 1298 LOGNAMESIZE); 1299 1300 return (name); 1301} 1302 1303 1304static void 1305rmat(uid_t uid) 1306{ 1307 DIR *d = opendir("/var/at/jobs"); 1308 1309 if (d != NULL) { 1310 struct dirent *e; 1311 1312 while ((e = readdir(d)) != NULL) { 1313 struct stat st; 1314 1315 if (strncmp(e->d_name, ".lock", 5) != 0 && 1316 stat(e->d_name, &st) == 0 && 1317 !S_ISDIR(st.st_mode) && 1318 st.st_uid == uid) { 1319 char tmp[MAXPATHLEN]; 1320 1321 snprintf(tmp, sizeof(tmp), "/usr/bin/atrm %s", e->d_name); 1322 system(tmp); 1323 } 1324 } 1325 closedir(d); 1326 } 1327} 1328 1329static void 1330rmopie(char const * name) 1331{ 1332 static const char etcopie[] = "/etc/opiekeys"; 1333 FILE *fp = fopen(etcopie, "r+"); 1334 1335 if (fp != NULL) { 1336 char tmp[1024]; 1337 off_t atofs = 0; 1338 int length = strlen(name); 1339 1340 while (fgets(tmp, sizeof tmp, fp) != NULL) { 1341 if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') { 1342 if (fseek(fp, atofs, SEEK_SET) == 0) { 1343 fwrite("#", 1, 1, fp); /* Comment username out */ 1344 } 1345 break; 1346 } 1347 atofs = ftell(fp); 1348 } 1349 /* 1350 * If we got an error of any sort, don't update! 1351 */ 1352 fclose(fp); 1353 } 1354} 1355 1356