pw_user.c revision 285396
1231200Smm/*- 2231200Smm * Copyright (C) 1996 3231200Smm * David L. Nugent. All rights reserved. 4231200Smm * 5231200Smm * Redistribution and use in source and binary forms, with or without 6231200Smm * modification, are permitted provided that the following conditions 7231200Smm * are met: 8231200Smm * 1. Redistributions of source code must retain the above copyright 9231200Smm * notice, this list of conditions and the following disclaimer. 10231200Smm * 2. Redistributions in binary form must reproduce the above copyright 11231200Smm * notice, this list of conditions and the following disclaimer in the 12231200Smm * documentation and/or other materials provided with the distribution. 13231200Smm * 14231200Smm * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND 15231200Smm * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16231200Smm * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17231200Smm * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE 18231200Smm * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19231200Smm * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20231200Smm * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21231200Smm * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22231200Smm * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23231200Smm * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24231200Smm * SUCH DAMAGE. 25231200Smm * 26231200Smm */ 27299529Smm 28231200Smm#ifndef lint 29231200Smmstatic const char rcsid[] = 30231200Smm "$FreeBSD: head/usr.sbin/pw/pw_user.c 285396 2015-07-11 17:01:08Z bapt $"; 31299529Smm#endif /* not lint */ 32299529Smm 33299529Smm#include <ctype.h> 34299529Smm#include <err.h> 35299529Smm#include <fcntl.h> 36299529Smm#include <sys/param.h> 37231200Smm#include <dirent.h> 38370535Sgit2svn#include <paths.h> 39299529Smm#include <termios.h> 40370535Sgit2svn#include <sys/types.h> 41370535Sgit2svn#include <sys/time.h> 42299529Smm#include <sys/resource.h> 43299529Smm#include <login_cap.h> 44299529Smm#include <pwd.h> 45299529Smm#include <grp.h> 46299529Smm#include <libutil.h> 47299529Smm#include "pw.h" 48299529Smm#include "bitmap.h" 49231200Smm 50231200Smm#define LOGNAMESIZE (MAXLOGNAME-1) 51299529Smm 52231200Smmstatic char locked_str[] = "*LOCKED*"; 53231200Smm 54299529Smmstatic int delete_user(struct userconf *cnf, struct passwd *pwd, 55299529Smm char *name, int delete, int mode); 56299529Smmstatic int print_user(struct passwd * pwd); 57299529Smmstatic uid_t pw_uidpolicy(struct userconf * cnf, long id); 58353376Smmstatic uid_t pw_gidpolicy(struct cargs * args, char *nam, gid_t prefer); 59231200Smmstatic time_t pw_pwdpolicy(struct userconf * cnf, struct cargs * args); 60238856Smmstatic time_t pw_exppolicy(struct userconf * cnf, struct cargs * args); 61238856Smmstatic char *pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user); 62231200Smmstatic char *pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell); 63231200Smmstatic char *pw_password(struct userconf * cnf, struct cargs * args, char const * user); 64231200Smmstatic char *shell_path(char const * path, char *shells[], char *sh); 65299529Smmstatic void rmat(uid_t uid); 66299529Smmstatic void rmopie(char const * name); 67299529Smm 68299529Smmstatic void 69299529Smmcreate_and_populate_homedir(int mode, struct passwd *pwd) 70299529Smm{ 71299529Smm char *homedir, *dotdir; 72299529Smm struct userconf *cnf = conf.userconf; 73299529Smm 74299529Smm homedir = dotdir = NULL; 75299529Smm 76299529Smm if (conf.rootdir[0] != '\0') { 77231200Smm asprintf(&homedir, "%s/%s", conf.rootdir, pwd->pw_dir); 78231200Smm if (homedir == NULL) 79370535Sgit2svn errx(EX_OSERR, "out of memory"); 80370535Sgit2svn asprintf(&dotdir, "%s/%s", conf.rootdir, cnf->dotdir); 81299529Smm } 82299529Smm 83370535Sgit2svn copymkdir(homedir ? homedir : pwd->pw_dir, dotdir ? dotdir: cnf->dotdir, 84370535Sgit2svn cnf->homemode, pwd->pw_uid, pwd->pw_gid); 85370535Sgit2svn pw_log(cnf, mode, W_USER, "%s(%u) home %s made", pwd->pw_name, 86370535Sgit2svn pwd->pw_uid, pwd->pw_dir); 87299529Smm} 88299529Smm 89299529Smmstatic int 90299529Smmset_passwd(struct passwd *pwd, bool update) 91299529Smm{ 92299529Smm int b, istty; 93299529Smm struct termios t, n; 94299529Smm login_cap_t *lc; 95299529Smm char line[_PASSWORD_LEN+1]; 96299529Smm char *p; 97231200Smm 98231200Smm if (conf.fd == '-') { 99231200Smm if (!pwd->pw_passwd || *pwd->pw_passwd != '*') { 100231200Smm pwd->pw_passwd = "*"; /* No access */ 101299529Smm return (1); 102299529Smm } 103231200Smm return (0); 104231200Smm } 105231200Smm 106231200Smm if ((istty = isatty(conf.fd))) { 107231200Smm if (tcgetattr(conf.fd, &t) == -1) 108299529Smm istty = 0; 109299529Smm else { 110299529Smm n = t; 111299529Smm n.c_lflag &= ~(ECHO); 112299529Smm tcsetattr(conf.fd, TCSANOW, &n); 113299529Smm printf("%s%spassword for user %s:", 114299529Smm update ? "new " : "", 115299529Smm conf.precrypted ? "encrypted " : "", 116231200Smm pwd->pw_name); 117231200Smm fflush(stdout); 118231200Smm } 119299529Smm } 120299529Smm b = read(conf.fd, line, sizeof(line) - 1); 121299529Smm if (istty) { /* Restore state */ 122299529Smm tcsetattr(conf.fd, TCSANOW, &t); 123299529Smm fputc('\n', stdout); 124299529Smm fflush(stdout); 125299529Smm } 126299529Smm 127299529Smm if (b < 0) 128299529Smm err(EX_IOERR, "-%c file descriptor", 129299529Smm conf.precrypted ? 'H' : 'h'); 130299529Smm line[b] = '\0'; 131370535Sgit2svn if ((p = strpbrk(line, "\r\n")) != NULL) 132299529Smm *p = '\0'; 133299529Smm if (!*line) 134299529Smm errx(EX_DATAERR, "empty password read on file descriptor %d", 135299529Smm conf.fd); 136299529Smm if (conf.precrypted) { 137299529Smm if (strchr(line, ':') != NULL) 138370535Sgit2svn errx(EX_DATAERR, "bad encrypted password"); 139370535Sgit2svn pwd->pw_passwd = line; 140299529Smm } else { 141370535Sgit2svn lc = login_getpwclass(pwd); 142299529Smm if (lc == NULL || 143370535Sgit2svn login_setcryptfmt(lc, "sha512", NULL) == NULL) 144370535Sgit2svn warn("setting crypt(3) format"); 145299529Smm login_close(lc); 146299529Smm pwd->pw_passwd = pw_pwcrypt(line); 147299529Smm } 148299529Smm return (1); 149299529Smm} 150299529Smm 151299529Smmint 152299529Smmpw_usernext(struct userconf *cnf, bool quiet) 153299529Smm{ 154299529Smm uid_t next = pw_uidpolicy(cnf, -1); 155299529Smm 156299529Smm if (quiet) 157299529Smm return (next); 158299529Smm 159299529Smm printf("%u:", next); 160299529Smm pw_groupnext(cnf, quiet); 161299529Smm 162299529Smm return (EXIT_SUCCESS); 163299529Smm} 164299529Smm 165231200Smm/*- 166231200Smm * -C config configuration file 167231200Smm * -q quiet operation 168231200Smm * -n name login name 169231200Smm * -u uid user id 170231200Smm * -c comment user name/comment 171231200Smm * -d directory home directory 172231200Smm * -e date account expiry date 173231200Smm * -p date password expiry date 174231200Smm * -g grp primary group 175231200Smm * -G grp1,grp2 additional groups 176231200Smm * -m [ -k dir ] create and set up home 177231200Smm * -s shell name of login shell 178231200Smm * -o duplicate uid ok 179231200Smm * -L class user class 180231200Smm * -l name new login name 181231200Smm * -h fd password filehandle 182231200Smm * -H fd encrypted password filehandle 183353376Smm * -F force print or add 184231200Smm * Setting defaults: 185299529Smm * -D set user defaults 186231200Smm * -b dir default home root dir 187231200Smm * -e period default expiry period 188 * -p period default password change period 189 * -g group default group 190 * -G grp1,grp2.. default additional groups 191 * -L class default login class 192 * -k dir default home skeleton 193 * -s shell default shell 194 * -w method default password method 195 */ 196 197int 198pw_user(int mode, char *name, long id, struct cargs * args) 199{ 200 int rc, edited = 0; 201 char *p = NULL; 202 char *passtmp; 203 struct carg *arg; 204 struct passwd *pwd = NULL; 205 struct group *grp; 206 struct stat st; 207 struct userconf *cnf; 208 char line[_PASSWORD_LEN+1]; 209 char path[MAXPATHLEN]; 210 FILE *fp; 211 char *dmode_c; 212 void *set = NULL; 213 214 static struct passwd fakeuser = 215 { 216 NULL, 217 "*", 218 -1, 219 -1, 220 0, 221 "", 222 "User &", 223 "/nonexistent", 224 "/bin/sh", 225 0 226#if defined(__FreeBSD__) 227 ,0 228#endif 229 }; 230 231 cnf = conf.userconf; 232 233 if (mode == M_NEXT) 234 return (pw_usernext(cnf, conf.quiet)); 235 236 /* 237 * We can do all of the common legwork here 238 */ 239 240 if ((arg = getarg(args, 'b')) != NULL) { 241 cnf->home = arg->val; 242 } 243 244 if ((arg = getarg(args, 'M')) != NULL) { 245 dmode_c = arg->val; 246 if ((set = setmode(dmode_c)) == NULL) 247 errx(EX_DATAERR, "invalid directory creation mode '%s'", 248 dmode_c); 249 cnf->homemode = getmode(set, _DEF_DIRMODE); 250 free(set); 251 } 252 253 /* 254 * If we'll need to use it or we're updating it, 255 * then create the base home directory if necessary 256 */ 257 if (arg != NULL || getarg(args, 'm') != NULL) { 258 int l = strlen(cnf->home); 259 260 if (l > 1 && cnf->home[l-1] == '/') /* Shave off any trailing path delimiter */ 261 cnf->home[--l] = '\0'; 262 263 if (l < 2 || *cnf->home != '/') /* Check for absolute path name */ 264 errx(EX_DATAERR, "invalid base directory for home '%s'", cnf->home); 265 266 if (stat(cnf->home, &st) == -1) { 267 char dbuf[MAXPATHLEN]; 268 269 /* 270 * This is a kludge especially for Joerg :) 271 * If the home directory would be created in the root partition, then 272 * we really create it under /usr which is likely to have more space. 273 * But we create a symlink from cnf->home -> "/usr" -> cnf->home 274 */ 275 if (strchr(cnf->home+1, '/') == NULL) { 276 snprintf(dbuf, MAXPATHLEN, "/usr%s", cnf->home); 277 if (mkdir(dbuf, _DEF_DIRMODE) != -1 || errno == EEXIST) { 278 chown(dbuf, 0, 0); 279 /* 280 * Skip first "/" and create symlink: 281 * /home -> usr/home 282 */ 283 symlink(dbuf+1, cnf->home); 284 } 285 /* If this falls, fall back to old method */ 286 } 287 strlcpy(dbuf, cnf->home, sizeof(dbuf)); 288 p = dbuf; 289 if (stat(dbuf, &st) == -1) { 290 while ((p = strchr(p + 1, '/')) != NULL) { 291 *p = '\0'; 292 if (stat(dbuf, &st) == -1) { 293 if (mkdir(dbuf, _DEF_DIRMODE) == -1) 294 goto direrr; 295 chown(dbuf, 0, 0); 296 } else if (!S_ISDIR(st.st_mode)) 297 errx(EX_OSFILE, "'%s' (root home parent) is not a directory", dbuf); 298 *p = '/'; 299 } 300 } 301 if (stat(dbuf, &st) == -1) { 302 if (mkdir(dbuf, _DEF_DIRMODE) == -1) { 303 direrr: err(EX_OSFILE, "mkdir '%s'", dbuf); 304 } 305 chown(dbuf, 0, 0); 306 } 307 } else if (!S_ISDIR(st.st_mode)) 308 errx(EX_OSFILE, "root home `%s' is not a directory", cnf->home); 309 } 310 311 if ((arg = getarg(args, 'e')) != NULL) 312 cnf->expire_days = atoi(arg->val); 313 314 if ((arg = getarg(args, 'y')) != NULL) 315 cnf->nispasswd = arg->val; 316 317 if ((arg = getarg(args, 'p')) != NULL && arg->val) 318 cnf->password_days = atoi(arg->val); 319 320 if ((arg = getarg(args, 'g')) != NULL) { 321 if (!*(p = arg->val)) /* Handle empty group list specially */ 322 cnf->default_group = ""; 323 else { 324 if ((grp = GETGRNAM(p)) == NULL) { 325 if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 326 errx(EX_NOUSER, "group `%s' does not exist", p); 327 } 328 cnf->default_group = newstr(grp->gr_name); 329 } 330 } 331 if ((arg = getarg(args, 'L')) != NULL) 332 cnf->default_class = pw_checkname(arg->val, 0); 333 334 if ((arg = getarg(args, 'G')) != NULL && arg->val) { 335 int i = 0; 336 337 for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) { 338 if ((grp = GETGRNAM(p)) == NULL) { 339 if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 340 errx(EX_NOUSER, "group `%s' does not exist", p); 341 } 342 if (extendarray(&cnf->groups, &cnf->numgroups, i + 2) != -1) 343 cnf->groups[i++] = newstr(grp->gr_name); 344 } 345 while (i < cnf->numgroups) 346 cnf->groups[i++] = NULL; 347 } 348 349 if ((arg = getarg(args, 'k')) != NULL) { 350 if (stat(cnf->dotdir = arg->val, &st) == -1 || !S_ISDIR(st.st_mode)) 351 errx(EX_OSFILE, "skeleton `%s' is not a directory or does not exist", cnf->dotdir); 352 } 353 354 if ((arg = getarg(args, 's')) != NULL) 355 cnf->shell_default = arg->val; 356 357 if ((arg = getarg(args, 'w')) != NULL) 358 cnf->default_password = boolean_val(arg->val, cnf->default_password); 359 if (mode == M_ADD && getarg(args, 'D')) { 360 if (name != NULL) 361 errx(EX_DATAERR, "can't combine `-D' with `-n name'"); 362 if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 363 if ((cnf->min_uid = (uid_t) atoi(p)) == 0) 364 cnf->min_uid = 1000; 365 if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid) 366 cnf->max_uid = 32000; 367 } 368 if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 369 if ((cnf->min_gid = (gid_t) atoi(p)) == 0) 370 cnf->min_gid = 1000; 371 if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid) 372 cnf->max_gid = 32000; 373 } 374 375 if (write_userconfig(conf.config)) 376 return (EXIT_SUCCESS); 377 err(EX_IOERR, "config udpate"); 378 } 379 380 if (mode == M_PRINT && getarg(args, 'a')) { 381 SETPWENT(); 382 while ((pwd = GETPWENT()) != NULL) 383 print_user(pwd); 384 ENDPWENT(); 385 return EXIT_SUCCESS; 386 } 387 388 if (name != NULL) 389 pwd = GETPWNAM(pw_checkname(name, 0)); 390 391 if (id < 0 && name == NULL) 392 errx(EX_DATAERR, "user name or id required"); 393 394 /* 395 * Update, delete & print require that the user exists 396 */ 397 if (mode == M_UPDATE || mode == M_DELETE || 398 mode == M_PRINT || mode == M_LOCK || mode == M_UNLOCK) { 399 400 if (name == NULL && pwd == NULL) /* Try harder */ 401 pwd = GETPWUID(id); 402 403 if (pwd == NULL) { 404 if (mode == M_PRINT && getarg(args, 'F')) { 405 fakeuser.pw_name = name ? name : "nouser"; 406 fakeuser.pw_uid = (uid_t) id; 407 return print_user(&fakeuser); 408 } 409 if (name == NULL) 410 errx(EX_NOUSER, "no such uid `%ld'", id); 411 errx(EX_NOUSER, "no such user `%s'", name); 412 } 413 414 if (name == NULL) 415 name = pwd->pw_name; 416 417 /* 418 * The M_LOCK and M_UNLOCK functions simply add or remove 419 * a "*LOCKED*" prefix from in front of the password to 420 * prevent it decoding correctly, and therefore prevents 421 * access. Of course, this only prevents access via 422 * password authentication (not ssh, kerberos or any 423 * other method that does not use the UNIX password) but 424 * that is a known limitation. 425 */ 426 427 if (mode == M_LOCK) { 428 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) == 0) 429 errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name); 430 asprintf(&passtmp, "%s%s", locked_str, pwd->pw_passwd); 431 if (passtmp == NULL) /* disaster */ 432 errx(EX_UNAVAILABLE, "out of memory"); 433 pwd->pw_passwd = passtmp; 434 edited = 1; 435 } else if (mode == M_UNLOCK) { 436 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) != 0) 437 errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name); 438 pwd->pw_passwd += sizeof(locked_str)-1; 439 edited = 1; 440 } else if (mode == M_DELETE) 441 return (delete_user(cnf, pwd, name, 442 getarg(args, 'r') != NULL, mode)); 443 else if (mode == M_PRINT) 444 return print_user(pwd); 445 446 /* 447 * The rest is edit code 448 */ 449 if (conf.newname != NULL) { 450 if (strcmp(pwd->pw_name, "root") == 0) 451 errx(EX_DATAERR, "can't rename `root' account"); 452 pwd->pw_name = pw_checkname(conf.newname, 0); 453 edited = 1; 454 } 455 456 if (id > 0 && isdigit((unsigned char)*arg->val)) { 457 pwd->pw_uid = (uid_t)id; 458 edited = 1; 459 if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) 460 errx(EX_DATAERR, "can't change uid of `root' account"); 461 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 462 warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name); 463 } 464 465 if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) { /* Already checked this */ 466 gid_t newgid = (gid_t) GETGRNAM(cnf->default_group)->gr_gid; 467 if (newgid != pwd->pw_gid) { 468 edited = 1; 469 pwd->pw_gid = newgid; 470 } 471 } 472 473 if ((arg = getarg(args, 'p')) != NULL) { 474 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 475 if (pwd->pw_change != 0) { 476 pwd->pw_change = 0; 477 edited = 1; 478 } 479 } 480 else { 481 time_t now = time(NULL); 482 time_t expire = parse_date(now, arg->val); 483 484 if (pwd->pw_change != expire) { 485 pwd->pw_change = expire; 486 edited = 1; 487 } 488 } 489 } 490 491 if ((arg = getarg(args, 'e')) != NULL) { 492 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 493 if (pwd->pw_expire != 0) { 494 pwd->pw_expire = 0; 495 edited = 1; 496 } 497 } 498 else { 499 time_t now = time(NULL); 500 time_t expire = parse_date(now, arg->val); 501 502 if (pwd->pw_expire != expire) { 503 pwd->pw_expire = expire; 504 edited = 1; 505 } 506 } 507 } 508 509 if ((arg = getarg(args, 's')) != NULL) { 510 char *shell = shell_path(cnf->shelldir, cnf->shells, arg->val); 511 if (shell == NULL) 512 shell = ""; 513 if (strcmp(shell, pwd->pw_shell) != 0) { 514 pwd->pw_shell = shell; 515 edited = 1; 516 } 517 } 518 519 if (getarg(args, 'L')) { 520 if (cnf->default_class == NULL) 521 cnf->default_class = ""; 522 if (strcmp(pwd->pw_class, cnf->default_class) != 0) { 523 pwd->pw_class = cnf->default_class; 524 edited = 1; 525 } 526 } 527 528 if ((arg = getarg(args, 'd')) != NULL) { 529 if (strcmp(pwd->pw_dir, arg->val)) 530 edited = 1; 531 if (stat(pwd->pw_dir = arg->val, &st) == -1) { 532 if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0) 533 warnx("WARNING: home `%s' does not exist", pwd->pw_dir); 534 } else if (!S_ISDIR(st.st_mode)) 535 warnx("WARNING: home `%s' is not a directory", pwd->pw_dir); 536 } 537 538 if ((arg = getarg(args, 'w')) != NULL && conf.fd == -1) { 539 login_cap_t *lc; 540 541 lc = login_getpwclass(pwd); 542 if (lc == NULL || 543 login_setcryptfmt(lc, "sha512", NULL) == NULL) 544 warn("setting crypt(3) format"); 545 login_close(lc); 546 pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 547 edited = 1; 548 } 549 550 } else { 551 login_cap_t *lc; 552 553 /* 554 * Add code 555 */ 556 557 if (name == NULL) /* Required */ 558 errx(EX_DATAERR, "login name required"); 559 else if ((pwd = GETPWNAM(name)) != NULL) /* Exists */ 560 errx(EX_DATAERR, "login name `%s' already exists", name); 561 562 /* 563 * Now, set up defaults for a new user 564 */ 565 pwd = &fakeuser; 566 pwd->pw_name = name; 567 pwd->pw_class = cnf->default_class ? cnf->default_class : ""; 568 pwd->pw_uid = pw_uidpolicy(cnf, id); 569 pwd->pw_gid = pw_gidpolicy(args, pwd->pw_name, (gid_t) pwd->pw_uid); 570 pwd->pw_change = pw_pwdpolicy(cnf, args); 571 pwd->pw_expire = pw_exppolicy(cnf, args); 572 pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name); 573 pwd->pw_shell = pw_shellpolicy(cnf, args, NULL); 574 lc = login_getpwclass(pwd); 575 if (lc == NULL || login_setcryptfmt(lc, "sha512", NULL) == NULL) 576 warn("setting crypt(3) format"); 577 login_close(lc); 578 pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 579 edited = 1; 580 581 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 582 warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name); 583 } 584 585 /* 586 * Shared add/edit code 587 */ 588 if ((arg = getarg(args, 'c')) != NULL) { 589 char *gecos = pw_checkname(arg->val, 1); 590 if (strcmp(pwd->pw_gecos, gecos) != 0) { 591 pwd->pw_gecos = gecos; 592 edited = 1; 593 } 594 } 595 596 if (conf.fd != -1) 597 edited = set_passwd(pwd, mode == M_UPDATE); 598 599 /* 600 * Special case: -N only displays & exits 601 */ 602 if (conf.dryrun) 603 return print_user(pwd); 604 605 if (mode == M_ADD) { 606 edited = 1; /* Always */ 607 rc = addpwent(pwd); 608 if (rc == -1) 609 errx(EX_IOERR, "user '%s' already exists", 610 pwd->pw_name); 611 else if (rc != 0) 612 err(EX_IOERR, "passwd file update"); 613 if (cnf->nispasswd && *cnf->nispasswd=='/') { 614 rc = addnispwent(cnf->nispasswd, pwd); 615 if (rc == -1) 616 warnx("User '%s' already exists in NIS passwd", pwd->pw_name); 617 else 618 warn("NIS passwd update"); 619 /* NOTE: we treat NIS-only update errors as non-fatal */ 620 } 621 } else if (mode == M_UPDATE || mode == M_LOCK || mode == M_UNLOCK) { 622 if (edited) { /* Only updated this if required */ 623 rc = chgpwent(name, pwd); 624 if (rc == -1) 625 errx(EX_IOERR, "user '%s' does not exist (NIS?)", pwd->pw_name); 626 else if (rc != 0) 627 err(EX_IOERR, "passwd file update"); 628 if ( cnf->nispasswd && *cnf->nispasswd=='/') { 629 rc = chgnispwent(cnf->nispasswd, name, pwd); 630 if (rc == -1) 631 warn("User '%s' not found in NIS passwd", pwd->pw_name); 632 else 633 warn("NIS passwd update"); 634 /* NOTE: NIS-only update errors are not fatal */ 635 } 636 } 637 } 638 639 /* 640 * Ok, user is created or changed - now edit group file 641 */ 642 643 if (mode == M_ADD || getarg(args, 'G') != NULL) { 644 int i, j; 645 /* First remove the user from all group */ 646 SETGRENT(); 647 while ((grp = GETGRENT()) != NULL) { 648 char group[MAXLOGNAME]; 649 if (grp->gr_mem == NULL) 650 continue; 651 for (i = 0; grp->gr_mem[i] != NULL; i++) { 652 if (strcmp(grp->gr_mem[i] , pwd->pw_name) != 0) 653 continue; 654 for (j = i; grp->gr_mem[j] != NULL ; j++) 655 grp->gr_mem[j] = grp->gr_mem[j+1]; 656 strlcpy(group, grp->gr_name, MAXLOGNAME); 657 chggrent(group, grp); 658 } 659 } 660 ENDGRENT(); 661 662 /* now add to group where needed */ 663 for (i = 0; cnf->groups[i] != NULL; i++) { 664 grp = GETGRNAM(cnf->groups[i]); 665 grp = gr_add(grp, pwd->pw_name); 666 /* 667 * grp can only be NULL in 2 cases: 668 * - the new member is already a member 669 * - a problem with memory occurs 670 * in both cases we want to skip now. 671 */ 672 if (grp == NULL) 673 continue; 674 chggrent(cnf->groups[i], grp); 675 free(grp); 676 } 677 } 678 679 680 /* go get a current version of pwd */ 681 pwd = GETPWNAM(name); 682 if (pwd == NULL) { 683 /* This will fail when we rename, so special case that */ 684 if (mode == M_UPDATE && conf.newname != NULL) { 685 name = conf.newname; /* update new name */ 686 pwd = GETPWNAM(name); /* refetch renamed rec */ 687 } 688 } 689 if (pwd == NULL) /* can't go on without this */ 690 errx(EX_NOUSER, "user '%s' disappeared during update", name); 691 692 grp = GETGRGID(pwd->pw_gid); 693 pw_log(cnf, mode, W_USER, "%s(%u):%s(%u):%s:%s:%s", 694 pwd->pw_name, pwd->pw_uid, 695 grp ? grp->gr_name : "unknown", (grp ? grp->gr_gid : (uid_t)-1), 696 pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 697 698 /* 699 * If adding, let's touch and chown the user's mail file. This is not 700 * strictly necessary under BSD with a 0755 maildir but it also 701 * doesn't hurt anything to create the empty mailfile 702 */ 703 if (mode == M_ADD) { 704 if (PWALTDIR() != PWF_ALT) { 705 arg = getarg(args, 'R'); 706 snprintf(path, sizeof(path), "%s%s/%s", 707 arg ? arg->val : "", _PATH_MAILDIR, pwd->pw_name); 708 close(open(path, O_RDWR | O_CREAT, 0600)); /* Preserve contents & 709 * mtime */ 710 chown(path, pwd->pw_uid, pwd->pw_gid); 711 } 712 } 713 714 /* 715 * Let's create and populate the user's home directory. Note 716 * that this also `works' for editing users if -m is used, but 717 * existing files will *not* be overwritten. 718 */ 719 if (PWALTDIR() != PWF_ALT && getarg(args, 'm') != NULL && pwd->pw_dir && 720 *pwd->pw_dir == '/' && pwd->pw_dir[1]) 721 create_and_populate_homedir(mode, pwd); 722 723 /* 724 * Finally, send mail to the new user as well, if we are asked to 725 */ 726 if (mode == M_ADD && !PWALTDIR() && cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) { 727 FILE *pfp = popen(_PATH_SENDMAIL " -t", "w"); 728 729 if (pfp == NULL) 730 warn("sendmail"); 731 else { 732 fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name); 733 while (fgets(line, sizeof(line), fp) != NULL) { 734 /* Do substitutions? */ 735 fputs(line, pfp); 736 } 737 pclose(pfp); 738 pw_log(cnf, mode, W_USER, "%s(%u) new user mail sent", 739 pwd->pw_name, pwd->pw_uid); 740 } 741 fclose(fp); 742 } 743 744 return EXIT_SUCCESS; 745} 746 747 748static uid_t 749pw_uidpolicy(struct userconf * cnf, long id) 750{ 751 struct passwd *pwd; 752 uid_t uid = (uid_t) - 1; 753 754 /* 755 * Check the given uid, if any 756 */ 757 if (id > 0) { 758 uid = (uid_t) id; 759 760 if ((pwd = GETPWUID(uid)) != NULL && conf.checkduplicate) 761 errx(EX_DATAERR, "uid `%u' has already been allocated", pwd->pw_uid); 762 } else { 763 struct bitmap bm; 764 765 /* 766 * We need to allocate the next available uid under one of 767 * two policies a) Grab the first unused uid b) Grab the 768 * highest possible unused uid 769 */ 770 if (cnf->min_uid >= cnf->max_uid) { /* Sanity 771 * claus^H^H^H^Hheck */ 772 cnf->min_uid = 1000; 773 cnf->max_uid = 32000; 774 } 775 bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1); 776 777 /* 778 * Now, let's fill the bitmap from the password file 779 */ 780 SETPWENT(); 781 while ((pwd = GETPWENT()) != NULL) 782 if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid) 783 bm_setbit(&bm, pwd->pw_uid - cnf->min_uid); 784 ENDPWENT(); 785 786 /* 787 * Then apply the policy, with fallback to reuse if necessary 788 */ 789 if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid) 790 uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid); 791 792 /* 793 * Another sanity check 794 */ 795 if (uid < cnf->min_uid || uid > cnf->max_uid) 796 errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used"); 797 bm_dealloc(&bm); 798 } 799 return uid; 800} 801 802 803static uid_t 804pw_gidpolicy(struct cargs * args, char *nam, gid_t prefer) 805{ 806 struct group *grp; 807 gid_t gid = (uid_t) - 1; 808 struct carg *a_gid = getarg(args, 'g'); 809 struct userconf *cnf = conf.userconf; 810 811 /* 812 * If no arg given, see if default can help out 813 */ 814 if (a_gid == NULL && cnf->default_group && *cnf->default_group) 815 a_gid = addarg(args, 'g', cnf->default_group); 816 817 /* 818 * Check the given gid, if any 819 */ 820 SETGRENT(); 821 if (a_gid != NULL) { 822 if ((grp = GETGRNAM(a_gid->val)) == NULL) { 823 gid = (gid_t) atol(a_gid->val); 824 if ((gid == 0 && !isdigit((unsigned char)*a_gid->val)) || (grp = GETGRGID(gid)) == NULL) 825 errx(EX_NOUSER, "group `%s' is not defined", a_gid->val); 826 } 827 gid = grp->gr_gid; 828 } else if ((grp = GETGRNAM(nam)) != NULL && 829 (grp->gr_mem == NULL || grp->gr_mem[0] == NULL)) { 830 gid = grp->gr_gid; /* Already created? Use it anyway... */ 831 } else { 832 struct cargs grpargs; 833 char tmp[32]; 834 835 LIST_INIT(&grpargs); 836 837 /* 838 * We need to auto-create a group with the user's name. We 839 * can send all the appropriate output to our sister routine 840 * bit first see if we can create a group with gid==uid so we 841 * can keep the user and group ids in sync. We purposely do 842 * NOT check the gid range if we can force the sync. If the 843 * user's name dups an existing group, then the group add 844 * function will happily handle that case for us and exit. 845 */ 846 if (GETGRGID(prefer) == NULL) { 847 snprintf(tmp, sizeof(tmp), "%u", prefer); 848 addarg(&grpargs, 'g', tmp); 849 } 850 if (conf.dryrun) { 851 gid = pw_groupnext(cnf, true); 852 } else { 853 pw_group(M_ADD, nam, -1, &grpargs); 854 if ((grp = GETGRNAM(nam)) != NULL) 855 gid = grp->gr_gid; 856 } 857 a_gid = LIST_FIRST(&grpargs); 858 while (a_gid != NULL) { 859 struct carg *t = LIST_NEXT(a_gid, list); 860 LIST_REMOVE(a_gid, list); 861 a_gid = t; 862 } 863 } 864 ENDGRENT(); 865 return gid; 866} 867 868 869static time_t 870pw_pwdpolicy(struct userconf * cnf, struct cargs * args) 871{ 872 time_t result = 0; 873 time_t now = time(NULL); 874 struct carg *arg = getarg(args, 'p'); 875 876 if (arg != NULL) { 877 if ((result = parse_date(now, arg->val)) == now) 878 errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 879 } else if (cnf->password_days > 0) 880 result = now + ((long) cnf->password_days * 86400L); 881 return result; 882} 883 884 885static time_t 886pw_exppolicy(struct userconf * cnf, struct cargs * args) 887{ 888 time_t result = 0; 889 time_t now = time(NULL); 890 struct carg *arg = getarg(args, 'e'); 891 892 if (arg != NULL) { 893 if ((result = parse_date(now, arg->val)) == now) 894 errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 895 } else if (cnf->expire_days > 0) 896 result = now + ((long) cnf->expire_days * 86400L); 897 return result; 898} 899 900 901static char * 902pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user) 903{ 904 struct carg *arg = getarg(args, 'd'); 905 static char home[128]; 906 907 if (arg) 908 return (arg->val); 909 910 if (cnf->home == NULL || *cnf->home == '\0') 911 errx(EX_CONFIG, "no base home directory set"); 912 snprintf(home, sizeof(home), "%s/%s", cnf->home, user); 913 914 return (home); 915} 916 917static char * 918shell_path(char const * path, char *shells[], char *sh) 919{ 920 if (sh != NULL && (*sh == '/' || *sh == '\0')) 921 return sh; /* specified full path or forced none */ 922 else { 923 char *p; 924 char paths[_UC_MAXLINE]; 925 926 /* 927 * We need to search paths 928 */ 929 strlcpy(paths, path, sizeof(paths)); 930 for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) { 931 int i; 932 static char shellpath[256]; 933 934 if (sh != NULL) { 935 snprintf(shellpath, sizeof(shellpath), "%s/%s", p, sh); 936 if (access(shellpath, X_OK) == 0) 937 return shellpath; 938 } else 939 for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) { 940 snprintf(shellpath, sizeof(shellpath), "%s/%s", p, shells[i]); 941 if (access(shellpath, X_OK) == 0) 942 return shellpath; 943 } 944 } 945 if (sh == NULL) 946 errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh); 947 errx(EX_CONFIG, "no default shell available or defined"); 948 return NULL; 949 } 950} 951 952 953static char * 954pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell) 955{ 956 char *sh = newshell; 957 struct carg *arg = getarg(args, 's'); 958 959 if (newshell == NULL && arg != NULL) 960 sh = arg->val; 961 return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default); 962} 963 964#define SALTSIZE 32 965 966static char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./"; 967 968char * 969pw_pwcrypt(char *password) 970{ 971 int i; 972 char salt[SALTSIZE + 1]; 973 char *cryptpw; 974 975 static char buf[256]; 976 977 /* 978 * Calculate a salt value 979 */ 980 for (i = 0; i < SALTSIZE; i++) 981 salt[i] = chars[arc4random_uniform(sizeof(chars) - 1)]; 982 salt[SALTSIZE] = '\0'; 983 984 cryptpw = crypt(password, salt); 985 if (cryptpw == NULL) 986 errx(EX_CONFIG, "crypt(3) failure"); 987 return strcpy(buf, cryptpw); 988} 989 990 991static char * 992pw_password(struct userconf * cnf, struct cargs * args, char const * user) 993{ 994 int i, l; 995 char pwbuf[32]; 996 997 switch (cnf->default_password) { 998 case -1: /* Random password */ 999 l = (arc4random() % 8 + 8); /* 8 - 16 chars */ 1000 for (i = 0; i < l; i++) 1001 pwbuf[i] = chars[arc4random_uniform(sizeof(chars)-1)]; 1002 pwbuf[i] = '\0'; 1003 1004 /* 1005 * We give this information back to the user 1006 */ 1007 if (conf.fd == -1 && !conf.dryrun) { 1008 if (isatty(STDOUT_FILENO)) 1009 printf("Password for '%s' is: ", user); 1010 printf("%s\n", pwbuf); 1011 fflush(stdout); 1012 } 1013 break; 1014 1015 case -2: /* No password at all! */ 1016 return ""; 1017 1018 case 0: /* No login - default */ 1019 default: 1020 return "*"; 1021 1022 case 1: /* user's name */ 1023 strlcpy(pwbuf, user, sizeof(pwbuf)); 1024 break; 1025 } 1026 return pw_pwcrypt(pwbuf); 1027} 1028 1029static int 1030delete_user(struct userconf *cnf, struct passwd *pwd, char *name, 1031 int delete, int mode) 1032{ 1033 char file[MAXPATHLEN]; 1034 char home[MAXPATHLEN]; 1035 uid_t uid = pwd->pw_uid; 1036 struct group *gr, *grp; 1037 char grname[LOGNAMESIZE]; 1038 int rc; 1039 struct stat st; 1040 1041 if (strcmp(pwd->pw_name, "root") == 0) 1042 errx(EX_DATAERR, "cannot remove user 'root'"); 1043 1044 if (!PWALTDIR()) { 1045 /* 1046 * Remove opie record from /etc/opiekeys 1047 */ 1048 1049 rmopie(pwd->pw_name); 1050 1051 /* 1052 * Remove crontabs 1053 */ 1054 snprintf(file, sizeof(file), "/var/cron/tabs/%s", pwd->pw_name); 1055 if (access(file, F_OK) == 0) { 1056 snprintf(file, sizeof(file), "crontab -u %s -r", pwd->pw_name); 1057 system(file); 1058 } 1059 } 1060 /* 1061 * Save these for later, since contents of pwd may be 1062 * invalidated by deletion 1063 */ 1064 snprintf(file, sizeof(file), "%s/%s", _PATH_MAILDIR, pwd->pw_name); 1065 strlcpy(home, pwd->pw_dir, sizeof(home)); 1066 gr = GETGRGID(pwd->pw_gid); 1067 if (gr != NULL) 1068 strlcpy(grname, gr->gr_name, LOGNAMESIZE); 1069 else 1070 grname[0] = '\0'; 1071 1072 rc = delpwent(pwd); 1073 if (rc == -1) 1074 err(EX_IOERR, "user '%s' does not exist", pwd->pw_name); 1075 else if (rc != 0) 1076 err(EX_IOERR, "passwd update"); 1077 1078 if (cnf->nispasswd && *cnf->nispasswd=='/') { 1079 rc = delnispwent(cnf->nispasswd, name); 1080 if (rc == -1) 1081 warnx("WARNING: user '%s' does not exist in NIS passwd", pwd->pw_name); 1082 else if (rc != 0) 1083 warn("WARNING: NIS passwd update"); 1084 /* non-fatal */ 1085 } 1086 1087 grp = GETGRNAM(name); 1088 if (grp != NULL && 1089 (grp->gr_mem == NULL || *grp->gr_mem == NULL) && 1090 strcmp(name, grname) == 0) 1091 delgrent(GETGRNAM(name)); 1092 SETGRENT(); 1093 while ((grp = GETGRENT()) != NULL) { 1094 int i, j; 1095 char group[MAXLOGNAME]; 1096 if (grp->gr_mem == NULL) 1097 continue; 1098 1099 for (i = 0; grp->gr_mem[i] != NULL; i++) { 1100 if (strcmp(grp->gr_mem[i], name) != 0) 1101 continue; 1102 1103 for (j = i; grp->gr_mem[j] != NULL; j++) 1104 grp->gr_mem[j] = grp->gr_mem[j+1]; 1105 strlcpy(group, grp->gr_name, MAXLOGNAME); 1106 chggrent(group, grp); 1107 } 1108 } 1109 ENDGRENT(); 1110 1111 pw_log(cnf, mode, W_USER, "%s(%u) account removed", name, uid); 1112 1113 if (!PWALTDIR()) { 1114 /* 1115 * Remove mail file 1116 */ 1117 remove(file); 1118 1119 /* 1120 * Remove at jobs 1121 */ 1122 if (getpwuid(uid) == NULL) 1123 rmat(uid); 1124 1125 /* 1126 * Remove home directory and contents 1127 */ 1128 if (delete && *home == '/' && getpwuid(uid) == NULL && 1129 stat(home, &st) != -1) { 1130 rm_r(home, uid); 1131 pw_log(cnf, mode, W_USER, "%s(%u) home '%s' %sremoved", 1132 name, uid, home, 1133 stat(home, &st) == -1 ? "" : "not completely "); 1134 } 1135 } 1136 1137 return (EXIT_SUCCESS); 1138} 1139 1140static int 1141print_user(struct passwd * pwd) 1142{ 1143 if (!conf.pretty) { 1144 char *buf; 1145 1146 buf = conf.v7 ? pw_make_v7(pwd) : pw_make(pwd); 1147 printf("%s\n", buf); 1148 free(buf); 1149 } else { 1150 int j; 1151 char *p; 1152 struct group *grp = GETGRGID(pwd->pw_gid); 1153 char uname[60] = "User &", office[60] = "[None]", 1154 wphone[60] = "[None]", hphone[60] = "[None]"; 1155 char acexpire[32] = "[None]", pwexpire[32] = "[None]"; 1156 struct tm * tptr; 1157 1158 if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { 1159 strlcpy(uname, p, sizeof(uname)); 1160 if ((p = strtok(NULL, ",")) != NULL) { 1161 strlcpy(office, p, sizeof(office)); 1162 if ((p = strtok(NULL, ",")) != NULL) { 1163 strlcpy(wphone, p, sizeof(wphone)); 1164 if ((p = strtok(NULL, "")) != NULL) { 1165 strlcpy(hphone, p, 1166 sizeof(hphone)); 1167 } 1168 } 1169 } 1170 } 1171 /* 1172 * Handle '&' in gecos field 1173 */ 1174 if ((p = strchr(uname, '&')) != NULL) { 1175 int l = strlen(pwd->pw_name); 1176 int m = strlen(p); 1177 1178 memmove(p + l, p + 1, m); 1179 memmove(p, pwd->pw_name, l); 1180 *p = (char) toupper((unsigned char)*p); 1181 } 1182 if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL) 1183 strftime(acexpire, sizeof acexpire, "%c", tptr); 1184 if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL) 1185 strftime(pwexpire, sizeof pwexpire, "%c", tptr); 1186 printf("Login Name: %-15s #%-12u Group: %-15s #%u\n" 1187 " Full Name: %s\n" 1188 " Home: %-26.26s Class: %s\n" 1189 " Shell: %-26.26s Office: %s\n" 1190 "Work Phone: %-26.26s Home Phone: %s\n" 1191 "Acc Expire: %-26.26s Pwd Expire: %s\n", 1192 pwd->pw_name, pwd->pw_uid, 1193 grp ? grp->gr_name : "(invalid)", pwd->pw_gid, 1194 uname, pwd->pw_dir, pwd->pw_class, 1195 pwd->pw_shell, office, wphone, hphone, 1196 acexpire, pwexpire); 1197 SETGRENT(); 1198 j = 0; 1199 while ((grp=GETGRENT()) != NULL) 1200 { 1201 int i = 0; 1202 if (grp->gr_mem != NULL) { 1203 while (grp->gr_mem[i] != NULL) 1204 { 1205 if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) 1206 { 1207 printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name); 1208 break; 1209 } 1210 ++i; 1211 } 1212 } 1213 } 1214 ENDGRENT(); 1215 printf("%s", j ? "\n" : ""); 1216 } 1217 return EXIT_SUCCESS; 1218} 1219 1220char * 1221pw_checkname(char *name, int gecos) 1222{ 1223 char showch[8]; 1224 const char *badchars, *ch, *showtype; 1225 int reject; 1226 1227 ch = name; 1228 reject = 0; 1229 if (gecos) { 1230 /* See if the name is valid as a gecos (comment) field. */ 1231 badchars = ":!@"; 1232 showtype = "gecos field"; 1233 } else { 1234 /* See if the name is valid as a userid or group. */ 1235 badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\""; 1236 showtype = "userid/group name"; 1237 /* Userids and groups can not have a leading '-'. */ 1238 if (*ch == '-') 1239 reject = 1; 1240 } 1241 if (!reject) { 1242 while (*ch) { 1243 if (strchr(badchars, *ch) != NULL || *ch < ' ' || 1244 *ch == 127) { 1245 reject = 1; 1246 break; 1247 } 1248 /* 8-bit characters are only allowed in GECOS fields */ 1249 if (!gecos && (*ch & 0x80)) { 1250 reject = 1; 1251 break; 1252 } 1253 ch++; 1254 } 1255 } 1256 /* 1257 * A `$' is allowed as the final character for userids and groups, 1258 * mainly for the benefit of samba. 1259 */ 1260 if (reject && !gecos) { 1261 if (*ch == '$' && *(ch + 1) == '\0') { 1262 reject = 0; 1263 ch++; 1264 } 1265 } 1266 if (reject) { 1267 snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127) 1268 ? "`%c'" : "0x%02x", *ch); 1269 errx(EX_DATAERR, "invalid character %s at position %td in %s", 1270 showch, (ch - name), showtype); 1271 } 1272 if (!gecos && (ch - name) > LOGNAMESIZE) 1273 errx(EX_DATAERR, "name too long `%s' (max is %d)", name, 1274 LOGNAMESIZE); 1275 1276 return (name); 1277} 1278 1279 1280static void 1281rmat(uid_t uid) 1282{ 1283 DIR *d = opendir("/var/at/jobs"); 1284 1285 if (d != NULL) { 1286 struct dirent *e; 1287 1288 while ((e = readdir(d)) != NULL) { 1289 struct stat st; 1290 1291 if (strncmp(e->d_name, ".lock", 5) != 0 && 1292 stat(e->d_name, &st) == 0 && 1293 !S_ISDIR(st.st_mode) && 1294 st.st_uid == uid) { 1295 char tmp[MAXPATHLEN]; 1296 1297 snprintf(tmp, sizeof(tmp), "/usr/bin/atrm %s", e->d_name); 1298 system(tmp); 1299 } 1300 } 1301 closedir(d); 1302 } 1303} 1304 1305static void 1306rmopie(char const * name) 1307{ 1308 static const char etcopie[] = "/etc/opiekeys"; 1309 FILE *fp = fopen(etcopie, "r+"); 1310 1311 if (fp != NULL) { 1312 char tmp[1024]; 1313 off_t atofs = 0; 1314 int length = strlen(name); 1315 1316 while (fgets(tmp, sizeof tmp, fp) != NULL) { 1317 if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') { 1318 if (fseek(fp, atofs, SEEK_SET) == 0) { 1319 fwrite("#", 1, 1, fp); /* Comment username out */ 1320 } 1321 break; 1322 } 1323 atofs = ftell(fp); 1324 } 1325 /* 1326 * If we got an error of any sort, don't update! 1327 */ 1328 fclose(fp); 1329 } 1330} 1331 1332