pwd_mkdb.c revision 1.29
1 /* $NetBSD: pwd_mkdb.c,v 1.29 2004/06/20 22:20:18 jmc Exp $ */ 2 3 /* 4 * Copyright (c) 1991, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 /* 33 * Portions Copyright(C) 1994, Jason Downs. All rights reserved. 34 * 35 * Redistribution and use in source and binary forms, with or without 36 * modification, are permitted provided that the following conditions 37 * are met: 38 * 1. Redistributions of source code must retain the above copyright 39 * notice, this list of conditions and the following disclaimer. 40 * 2. Redistributions in binary form must reproduce the above copyright 41 * notice, this list of conditions and the following disclaimer in the 42 * documentation and/or other materials provided with the distribution. 43 * 44 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS 45 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 46 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 47 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, 48 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 49 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 50 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 51 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 52 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 53 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 54 * SUCH DAMAGE. 55 */ 56 57 #if HAVE_NBTOOL_CONFIG_H 58 #include "nbtool_config.h" 59 #endif 60 61 #include <sys/cdefs.h> 62 #if !defined(lint) 63 __COPYRIGHT("@(#) Copyright (c) 2000\n\ 64 The NetBSD Foundation, Inc. All rights reserved.\n\ 65 Copyright (c) 1991, 1993, 1994\n\ 66 The Regents of the University of California. All rights reserved.\n"); 67 __SCCSID("from: @(#)pwd_mkdb.c 8.5 (Berkeley) 4/20/94"); 68 __RCSID("$NetBSD: pwd_mkdb.c,v 1.29 2004/06/20 22:20:18 jmc Exp $"); 69 #endif /* not lint */ 70 71 #if HAVE_NBTOOL_CONFIG_H 72 #include "compat_pwd.h" 73 #else 74 #include <pwd.h> 75 #endif 76 77 #include <sys/param.h> 78 #include <sys/stat.h> 79 80 #include <db.h> 81 #include <err.h> 82 #include <errno.h> 83 #include <fcntl.h> 84 #include <limits.h> 85 #include <signal.h> 86 #include <stdio.h> 87 #include <stdlib.h> 88 #include <string.h> 89 #include <unistd.h> 90 #include <util.h> 91 92 #define MAX_CACHESIZE 8*1024*1024 93 #define MIN_CACHESIZE 2*1024*1024 94 95 #define PERM_INSECURE (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH) 96 #define PERM_SECURE (S_IRUSR | S_IWUSR) 97 98 #if HAVE_NBTOOL_CONFIG_H 99 static const char __yp_token[] = "__YP!"; 100 #else 101 /* Pull this out of the C library. */ 102 extern const char __yp_token[]; 103 #endif 104 105 HASHINFO openinfo = { 106 4096, /* bsize */ 107 32, /* ffactor */ 108 256, /* nelem */ 109 0, /* cachesize */ 110 NULL, /* hash() */ 111 0 /* lorder */ 112 }; 113 114 #define FILE_INSECURE 0x01 115 #define FILE_SECURE 0x02 116 #define FILE_ORIG 0x04 117 118 static char *pname; /* password file name */ 119 static char prefix[MAXPATHLEN]; 120 static char oldpwdfile[MAX(MAXPATHLEN, LINE_MAX * 2)]; 121 static char pwd_db_tmp[MAX(MAXPATHLEN, LINE_MAX * 2)]; 122 static char pwd_Sdb_tmp[MAX(MAXPATHLEN, LINE_MAX * 2)]; 123 static int lorder = BYTE_ORDER; 124 static int clean; 125 126 void bailout(void); 127 void cp(const char *, const char *, mode_t); 128 int deldbent(DB *, const char *, int, void *); 129 void error(const char *); 130 int getdbent(DB *, const char *, int, void *, struct passwd **); 131 void inconsistancy(void); 132 void install(const char *, const char *); 133 int main(int, char **); 134 void putdbents(DB *, struct passwd *, const char *, int, const char *, int, 135 int, int); 136 void putyptoken(DB *, const char *); 137 void rm(const char *); 138 int scan(FILE *, struct passwd *, int *, int *); 139 void usage(void); 140 void wr_error(const char *); 141 142 int 143 main(int argc, char *argv[]) 144 { 145 int ch, makeold, tfd, lineno, found, rv, hasyp, secureonly; 146 struct passwd pwd, *tpwd; 147 char *username; 148 DB *dp, *edp; 149 FILE *fp, *oldfp; 150 sigset_t set; 151 int dbflg, uid_dbflg, newuser, olduid, flags; 152 char buf[MAXPATHLEN]; 153 struct stat st; 154 u_int cachesize; 155 156 prefix[0] = '\0'; 157 makeold = 0; 158 oldfp = NULL; 159 username = NULL; 160 hasyp = 0; 161 secureonly = 0; 162 163 while ((ch = getopt(argc, argv, "BLd:psu:v")) != -1) 164 switch (ch) { 165 case 'B': /* big-endian output */ 166 lorder = BIG_ENDIAN; 167 break; 168 case 'L': /* little-endian output */ 169 lorder = LITTLE_ENDIAN; 170 break; 171 case 'd': /* set prefix */ 172 strlcpy(prefix, optarg, sizeof(prefix)); 173 break; 174 case 'p': /* create V7 "file.orig" */ 175 makeold = 1; 176 break; 177 case 's': /* modify secure db only */ 178 secureonly = 1; 179 break; 180 case 'u': /* modify one user only */ 181 username = optarg; 182 break; 183 case 'v': /* backward compatible */ 184 break; 185 case '?': 186 default: 187 usage(); 188 } 189 argc -= optind; 190 argv += optind; 191 192 if (argc != 1) 193 usage(); 194 if (username != NULL) 195 if (username[0] == '+' || username[0] == '-') 196 usage(); 197 if (secureonly) 198 makeold = 0; 199 200 /* 201 * This could be changed to allow the user to interrupt. 202 * Probably not worth the effort. 203 */ 204 sigemptyset(&set); 205 sigaddset(&set, SIGTSTP); 206 sigaddset(&set, SIGHUP); 207 sigaddset(&set, SIGINT); 208 sigaddset(&set, SIGQUIT); 209 sigaddset(&set, SIGTERM); 210 (void)sigprocmask(SIG_BLOCK, &set, (sigset_t *)NULL); 211 212 /* We don't care what the user wants. */ 213 (void)umask(0); 214 215 if (username == NULL) 216 flags = O_RDWR | O_CREAT | O_EXCL; 217 else 218 flags = O_RDWR; 219 220 pname = *argv; 221 /* Open the original password file */ 222 if ((fp = fopen(pname, "r")) == NULL) 223 error(pname); 224 225 openinfo.lorder = lorder; 226 227 if (fstat(fileno(fp), &st) == -1) 228 error(pname); 229 230 /* Tweak openinfo values for large passwd files. */ 231 cachesize = st.st_size * 20; 232 if (cachesize > MAX_CACHESIZE) 233 cachesize = MAX_CACHESIZE; 234 else if (cachesize < MIN_CACHESIZE) 235 cachesize = MIN_CACHESIZE; 236 openinfo.cachesize = cachesize; 237 238 /* Open the temporary insecure password database. */ 239 if (!secureonly) { 240 (void)snprintf(pwd_db_tmp, sizeof(pwd_db_tmp), "%s%s.tmp", 241 prefix, _PATH_MP_DB); 242 if (username != NULL) { 243 snprintf(buf, sizeof(buf), "%s" _PATH_MP_DB, prefix); 244 cp(buf, pwd_db_tmp, PERM_INSECURE); 245 } 246 dp = dbopen(pwd_db_tmp, flags, PERM_INSECURE, DB_HASH, 247 &openinfo); 248 if (dp == NULL) 249 error(pwd_db_tmp); 250 clean |= FILE_INSECURE; 251 } 252 253 /* Open the temporary encrypted password database. */ 254 (void)snprintf(pwd_Sdb_tmp, sizeof(pwd_Sdb_tmp), "%s%s.tmp", prefix, 255 _PATH_SMP_DB); 256 if (username != NULL) { 257 snprintf(buf, sizeof(buf), "%s" _PATH_SMP_DB, prefix); 258 cp(buf, pwd_Sdb_tmp, PERM_SECURE); 259 } 260 edp = dbopen(pwd_Sdb_tmp, flags, PERM_SECURE, DB_HASH, &openinfo); 261 if (!edp) 262 error(pwd_Sdb_tmp); 263 clean |= FILE_SECURE; 264 265 /* 266 * Open file for old password file. Minor trickiness -- don't want to 267 * chance the file already existing, since someone (stupidly) might 268 * still be using this for permission checking. So, open it first and 269 * fdopen the resulting fd. The resulting file should be readable by 270 * everyone. 271 */ 272 if (makeold) { 273 (void)snprintf(oldpwdfile, sizeof(oldpwdfile), "%s.orig", 274 pname); 275 if ((tfd = open(oldpwdfile, O_WRONLY | O_CREAT | O_EXCL, 276 PERM_INSECURE)) < 0) 277 error(oldpwdfile); 278 clean |= FILE_ORIG; 279 if ((oldfp = fdopen(tfd, "w")) == NULL) 280 error(oldpwdfile); 281 } 282 283 if (username != NULL) { 284 uid_dbflg = 0; 285 dbflg = 0; 286 found = 0; 287 288 /* 289 * Determine if this is a new entry. 290 */ 291 if (getdbent(edp, pwd_Sdb_tmp, _PW_KEYBYNAME, username, &tpwd)) 292 newuser = 1; 293 else { 294 newuser = 0; 295 olduid = tpwd->pw_uid; 296 } 297 298 } else { 299 uid_dbflg = R_NOOVERWRITE; 300 dbflg = R_NOOVERWRITE; 301 } 302 303 /* 304 * If we see something go by that looks like YP, we save a special 305 * pointer record, which if YP is enabled in the C lib, will speed 306 * things up. 307 */ 308 for (lineno = 0; scan(fp, &pwd, &flags, &lineno);) { 309 /* 310 * Create original format password file entry. 311 */ 312 if (makeold) { 313 (void)fprintf(oldfp, "%s:*:%d:%d:%s:%s:%s\n", 314 pwd.pw_name, pwd.pw_uid, pwd.pw_gid, pwd.pw_gecos, 315 pwd.pw_dir, pwd.pw_shell); 316 if (ferror(oldfp)) 317 wr_error(oldpwdfile); 318 } 319 320 if (username == NULL) { 321 /* Look like YP? */ 322 if (pwd.pw_name[0] == '+' || pwd.pw_name[0] == '-') 323 hasyp++; 324 325 /* Warn about potentially unsafe uid/gid overrides. */ 326 if (pwd.pw_name[0] == '+') { 327 if ((flags & _PASSWORD_NOUID) == 0 && 328 pwd.pw_uid == 0) 329 warnx("line %d: superuser override " 330 "in YP inclusion", lineno); 331 if ((flags & _PASSWORD_NOGID) == 0 && 332 pwd.pw_gid == 0) 333 warnx("line %d: wheel override " 334 "in YP inclusion", lineno); 335 } 336 337 /* Write the database entry out. */ 338 if (!secureonly) 339 putdbents(dp, &pwd, "*", flags, pwd_db_tmp, 340 lineno, dbflg, uid_dbflg); 341 continue; 342 } else if (strcmp(username, pwd.pw_name) != 0) 343 continue; 344 345 if (found) { 346 warnx("user `%s' listed twice in password file", 347 username); 348 bailout(); 349 } 350 351 /* 352 * Ensure that the text file and database agree on 353 * which line the record is from. 354 */ 355 rv = getdbent(edp, pwd_Sdb_tmp, _PW_KEYBYNUM, &lineno, &tpwd); 356 if (newuser) { 357 if (rv == 0) 358 inconsistancy(); 359 } else if (rv == -1 || 360 strcmp(username, tpwd->pw_name) != 0) 361 inconsistancy(); 362 else if (olduid != pwd.pw_uid) { 363 /* 364 * If we're changing UID, remove the BYUID 365 * record for the old UID only if it has the 366 * same username. 367 */ 368 if (!getdbent(edp, pwd_Sdb_tmp, _PW_KEYBYUID, &olduid, 369 &tpwd)) { 370 if (strcmp(username, tpwd->pw_name) == 0) { 371 if (!secureonly) 372 deldbent(dp, pwd_db_tmp, 373 _PW_KEYBYUID, &olduid); 374 deldbent(edp, pwd_Sdb_tmp, 375 _PW_KEYBYUID, &olduid); 376 } 377 } else 378 inconsistancy(); 379 } 380 381 /* 382 * If there's an existing BYUID record for the new UID and 383 * the username doesn't match then be sure not to overwrite 384 * it. 385 */ 386 if (!getdbent(edp, pwd_Sdb_tmp, _PW_KEYBYUID, &pwd.pw_uid, 387 &tpwd)) 388 if (strcmp(username, tpwd->pw_name) != 0) 389 uid_dbflg = R_NOOVERWRITE; 390 391 /* Write the database entries out */ 392 if (!secureonly) 393 putdbents(dp, &pwd, "*", flags, pwd_db_tmp, lineno, 394 dbflg, uid_dbflg); 395 putdbents(edp, &pwd, pwd.pw_passwd, flags, pwd_Sdb_tmp, 396 lineno, dbflg, uid_dbflg); 397 398 found = 1; 399 if (!makeold) 400 break; 401 } 402 403 if (!secureonly) { 404 /* Store YP token if needed. */ 405 if (hasyp) 406 putyptoken(dp, pwd_db_tmp); 407 408 /* Close the insecure database. */ 409 if ((*dp->close)(dp) < 0) 410 wr_error(pwd_db_tmp); 411 } 412 413 /* 414 * If rebuilding the databases, we re-parse the text file and write 415 * the secure entries out in a separate pass. 416 */ 417 if (username == NULL) { 418 rewind(fp); 419 for (lineno = 0; scan(fp, &pwd, &flags, &lineno);) 420 putdbents(edp, &pwd, pwd.pw_passwd, flags, pwd_Sdb_tmp, 421 lineno, dbflg, uid_dbflg); 422 423 /* Store YP token if needed. */ 424 if (hasyp) 425 putyptoken(edp, pwd_Sdb_tmp); 426 } else if (!found) { 427 warnx("user `%s' not found in password file", username); 428 bailout(); 429 } 430 431 /* Close the secure database. */ 432 if ((*edp->close)(edp) < 0) 433 wr_error(pwd_Sdb_tmp); 434 435 /* Install as the real password files. */ 436 if (!secureonly) 437 install(pwd_db_tmp, _PATH_MP_DB); 438 install(pwd_Sdb_tmp, _PATH_SMP_DB); 439 440 /* Install the V7 password file. */ 441 if (makeold) { 442 if (fflush(oldfp) == EOF) 443 wr_error(oldpwdfile); 444 if (fclose(oldfp) == EOF) 445 wr_error(oldpwdfile); 446 install(oldpwdfile, _PATH_PASSWD); 447 } 448 449 /* Set master.passwd permissions, in case caller forgot. */ 450 (void)fchmod(fileno(fp), S_IRUSR|S_IWUSR); 451 if (fclose(fp) == EOF) 452 wr_error(pname); 453 454 /* 455 * Move the temporary master password file LAST -- chpass(1), 456 * passwd(1), vipw(8) and friends all use its existance to block 457 * other incarnations of themselves. The rename means that 458 * everything is unlocked, as the original file can no longer be 459 * accessed. 460 */ 461 install(pname, _PATH_MASTERPASSWD); 462 exit(EXIT_SUCCESS); 463 /* NOTREACHED */ 464 } 465 466 int 467 scan(FILE *fp, struct passwd *pw, int *flags, int *lineno) 468 { 469 static char line[LINE_MAX]; 470 char *p; 471 int oflags; 472 473 if (fgets(line, sizeof(line), fp) == NULL) 474 return (0); 475 (*lineno)++; 476 477 /* 478 * ``... if I swallow anything evil, put your fingers down my 479 * throat...'' 480 * -- The Who 481 */ 482 if ((p = strchr(line, '\n')) == NULL) { 483 warnx("line too long"); 484 errno = EFTYPE; /* XXX */ 485 error(pname); 486 } 487 *p = '\0'; 488 if (strcmp(line, "+") == 0) 489 strcpy(line, "+:::::::::"); /* pw_scan() can't handle "+" */ 490 oflags = 0; 491 if (!pw_scan(line, pw, &oflags)) { 492 warnx("at line #%d", *lineno); 493 errno = EFTYPE; /* XXX */ 494 error(pname); 495 } 496 *flags = oflags; 497 498 return (1); 499 } 500 501 void 502 install(const char *from, const char *to) 503 { 504 char buf[MAXPATHLEN]; 505 int sverrno; 506 507 snprintf(buf, sizeof(buf), "%s%s", prefix, to); 508 if (rename(from, buf)) { 509 sverrno = errno; 510 (void)snprintf(buf, sizeof(buf), "%s to %s", from, buf); 511 errno = sverrno; 512 error(buf); 513 } 514 } 515 516 void 517 rm(const char *victim) 518 { 519 520 if (unlink(victim) < 0) 521 warn("unlink(%s)", victim); 522 } 523 524 void 525 cp(const char *from, const char *to, mode_t mode) 526 { 527 static char buf[MAXBSIZE]; 528 int from_fd, rcount, to_fd, wcount, sverrno; 529 530 if ((from_fd = open(from, O_RDONLY, 0)) < 0) 531 error(from); 532 if ((to_fd = open(to, O_WRONLY | O_CREAT | O_EXCL, mode)) < 0) 533 error(to); 534 while ((rcount = read(from_fd, buf, MAXBSIZE)) > 0) { 535 wcount = write(to_fd, buf, rcount); 536 if (rcount != wcount || wcount == -1) { 537 sverrno = errno; 538 (void)snprintf(buf, sizeof(buf), "%s to %s", from, to); 539 errno = sverrno; 540 error(buf); 541 } 542 } 543 544 if (rcount < 0) { 545 sverrno = errno; 546 (void)snprintf(buf, sizeof(buf), "%s to %s", from, to); 547 errno = sverrno; 548 error(buf); 549 } 550 } 551 552 void 553 wr_error(const char *str) 554 { 555 char errbuf[BUFSIZ]; 556 int sverrno; 557 558 sverrno = errno; 559 560 (void)snprintf(errbuf, sizeof(errbuf), 561 "attempt to write %s failed", str); 562 563 errno = sverrno; 564 error(errbuf); 565 } 566 567 void 568 error(const char *str) 569 { 570 571 warn("%s", str); 572 bailout(); 573 } 574 575 void 576 inconsistancy(void) 577 { 578 579 warnx("text files and databases are inconsistent"); 580 warnx("re-build the databases without -u"); 581 bailout(); 582 } 583 584 void 585 bailout(void) 586 { 587 588 if ((clean & FILE_ORIG) != 0) 589 rm(oldpwdfile); 590 if ((clean & FILE_SECURE) != 0) 591 rm(pwd_Sdb_tmp); 592 if ((clean & FILE_INSECURE) != 0) 593 rm(pwd_db_tmp); 594 595 exit(EXIT_FAILURE); 596 } 597 598 /* 599 * Write entries to a database for a single user. 600 * 601 * The databases actually contain three copies of the original data. Each 602 * password file entry is converted into a rough approximation of a ``struct 603 * passwd'', with the strings placed inline. This object is then stored as 604 * the data for three separate keys. The first key * is the pw_name field 605 * prepended by the _PW_KEYBYNAME character. The second key is the pw_uid 606 * field prepended by the _PW_KEYBYUID character. The third key is the line 607 * number in the original file prepended by the _PW_KEYBYNUM character. 608 * (The special characters are prepended to ensure that the keys do not 609 * collide.) 610 */ 611 #define COMPACT(e) for (t = e; (*p++ = *t++) != '\0';) 612 613 void 614 putdbents(DB *dp, struct passwd *pw, const char *passwd, int flags, 615 const char *fn, int lineno, int dbflg, int uid_dbflg) 616 { 617 struct passwd pwd; 618 char buf[MAX(MAXPATHLEN, LINE_MAX * 2)], tbuf[1024], *p; 619 DBT data, key; 620 const char *t; 621 u_int32_t x; 622 int len; 623 624 memcpy(&pwd, pw, sizeof(pwd)); 625 data.data = (u_char *)buf; 626 key.data = (u_char *)tbuf; 627 628 if (lorder != BYTE_ORDER) { 629 M_32_SWAP(pwd.pw_uid); 630 M_32_SWAP(pwd.pw_gid); 631 M_32_SWAP(pwd.pw_change); 632 M_32_SWAP(pwd.pw_expire); 633 } 634 635 /* Create insecure data. */ 636 p = buf; 637 COMPACT(pwd.pw_name); 638 COMPACT(passwd); 639 memmove(p, &pwd.pw_uid, sizeof(pwd.pw_uid)); 640 p += sizeof(pwd.pw_uid); 641 memmove(p, &pwd.pw_gid, sizeof(pwd.pw_gid)); 642 p += sizeof(pwd.pw_gid); 643 memmove(p, &pwd.pw_change, sizeof(pwd.pw_change)); 644 p += sizeof(pwd.pw_change); 645 COMPACT(pwd.pw_class); 646 COMPACT(pwd.pw_gecos); 647 COMPACT(pwd.pw_dir); 648 COMPACT(pwd.pw_shell); 649 memmove(p, &pwd.pw_expire, sizeof(pwd.pw_expire)); 650 p += sizeof(pwd.pw_expire); 651 x = flags; 652 if (lorder != BYTE_ORDER) 653 M_32_SWAP(x); 654 memmove(p, &x, sizeof(x)); 655 p += sizeof(flags); 656 data.size = p - buf; 657 658 /* Store insecure by name. */ 659 tbuf[0] = _PW_KEYBYNAME; 660 len = strlen(pwd.pw_name); 661 memmove(tbuf + 1, pwd.pw_name, len); 662 key.size = len + 1; 663 if ((*dp->put)(dp, &key, &data, dbflg) == -1) 664 wr_error(fn); 665 666 /* Store insecure by number. */ 667 tbuf[0] = _PW_KEYBYNUM; 668 x = lineno; 669 if (lorder != BYTE_ORDER) 670 M_32_SWAP(x); 671 memmove(tbuf + 1, &x, sizeof(x)); 672 key.size = sizeof(x) + 1; 673 if ((*dp->put)(dp, &key, &data, dbflg) == -1) 674 wr_error(fn); 675 676 /* Store insecure by uid. */ 677 tbuf[0] = _PW_KEYBYUID; 678 memmove(tbuf + 1, &pwd.pw_uid, sizeof(pwd.pw_uid)); 679 key.size = sizeof(pwd.pw_uid) + 1; 680 if ((*dp->put)(dp, &key, &data, uid_dbflg) == -1) 681 wr_error(fn); 682 } 683 684 int 685 deldbent(DB *dp, const char *fn, int type, void *keyp) 686 { 687 char tbuf[1024]; 688 DBT key; 689 u_int32_t x; 690 int len, rv; 691 692 key.data = (u_char *)tbuf; 693 694 switch (tbuf[0] = type) { 695 case _PW_KEYBYNAME: 696 len = strlen((char *)keyp); 697 memcpy(tbuf + 1, keyp, len); 698 key.size = len + 1; 699 break; 700 701 case _PW_KEYBYNUM: 702 case _PW_KEYBYUID: 703 x = *(int *)keyp; 704 if (lorder != BYTE_ORDER) 705 M_32_SWAP(x); 706 memmove(tbuf + 1, &x, sizeof(x)); 707 key.size = sizeof(x) + 1; 708 break; 709 } 710 711 if ((rv = (*dp->del)(dp, &key, 0)) == -1) 712 wr_error(fn); 713 return (rv); 714 } 715 716 int 717 getdbent(DB *dp, const char *fn, int type, void *keyp, struct passwd **tpwd) 718 { 719 static char buf[MAX(MAXPATHLEN, LINE_MAX * 2)]; 720 static struct passwd pwd; 721 char tbuf[1024], *p; 722 DBT key, data; 723 u_int32_t x; 724 int len, rv; 725 726 data.data = (u_char *)buf; 727 data.size = sizeof(buf); 728 key.data = (u_char *)tbuf; 729 730 switch (tbuf[0] = type) { 731 case _PW_KEYBYNAME: 732 len = strlen((char *)keyp); 733 memcpy(tbuf + 1, keyp, len); 734 key.size = len + 1; 735 break; 736 737 case _PW_KEYBYNUM: 738 case _PW_KEYBYUID: 739 x = *(int *)keyp; 740 if (lorder != BYTE_ORDER) 741 M_32_SWAP(x); 742 memmove(tbuf + 1, &x, sizeof(x)); 743 key.size = sizeof(x) + 1; 744 break; 745 } 746 747 if ((rv = (*dp->get)(dp, &key, &data, 0)) == 1) 748 return (rv); 749 if (rv == -1) 750 error(pwd_Sdb_tmp); 751 752 p = (char *)data.data; 753 754 pwd.pw_name = p; 755 while (*p++ != '\0') 756 ; 757 pwd.pw_passwd = p; 758 while (*p++ != '\0') 759 ; 760 761 memcpy(&pwd.pw_uid, p, sizeof(pwd.pw_uid)); 762 p += sizeof(pwd.pw_uid); 763 memcpy(&pwd.pw_gid, p, sizeof(pwd.pw_gid)); 764 p += sizeof(pwd.pw_gid); 765 memcpy(&pwd.pw_change, p, sizeof(pwd.pw_change)); 766 p += sizeof(pwd.pw_change); 767 768 pwd.pw_class = p; 769 while (*p++ != '\0') 770 ; 771 pwd.pw_gecos = p; 772 while (*p++ != '\0') 773 ; 774 pwd.pw_dir = p; 775 while (*p++ != '\0') 776 ; 777 pwd.pw_shell = p; 778 while (*p++ != '\0') 779 ; 780 781 memcpy(&pwd.pw_expire, p, sizeof(pwd.pw_expire)); 782 p += sizeof(pwd.pw_expire); 783 784 if (lorder != BYTE_ORDER) { 785 M_32_SWAP(pwd.pw_uid); 786 M_32_SWAP(pwd.pw_gid); 787 M_32_SWAP(pwd.pw_change); 788 M_32_SWAP(pwd.pw_expire); 789 } 790 791 *tpwd = &pwd; 792 return (0); 793 } 794 795 void 796 putyptoken(DB *dp, const char *fn) 797 { 798 DBT data, key; 799 800 key.data = (u_char *)__yp_token; 801 key.size = strlen(__yp_token); 802 data.data = (u_char *)NULL; 803 data.size = 0; 804 805 if ((*dp->put)(dp, &key, &data, R_NOOVERWRITE) == -1) 806 wr_error(fn); 807 } 808 809 void 810 usage(void) 811 { 812 813 (void)fprintf(stderr, 814 "usage: pwd_mkdb [-BLps] [-d directory] [-u user] file\n"); 815 exit(EXIT_FAILURE); 816 } 817
Indexes created Tue Sep 30 20:09:53 GMT 2025