compare.c revision 258655
1/* $NetBSD: compare.c,v 1.58 2013/11/21 18:39:50 christos Exp $ */ 2 3/*- 4 * Copyright (c) 1989, 1993 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#if HAVE_NBTOOL_CONFIG_H 33#include "nbtool_config.h" 34#endif 35 36#include <sys/cdefs.h> 37#if defined(__RCSID) && !defined(lint) 38#if 0 39static char sccsid[] = "@(#)compare.c 8.1 (Berkeley) 6/6/93"; 40#else 41__RCSID("$NetBSD: compare.c,v 1.58 2013/11/21 18:39:50 christos Exp $"); 42#endif 43#endif /* not lint */ 44 45#include <sys/param.h> 46#include <sys/stat.h> 47 48#include <errno.h> 49#include <fcntl.h> 50#include <stdio.h> 51#include <stdint.h> 52#include <stdlib.h> 53#include <string.h> 54#include <time.h> 55#include <unistd.h> 56 57#ifndef NO_MD5 58#include <md5.h> 59#endif 60#ifndef NO_RMD160 61#include <rmd160.h> 62#endif 63#ifndef NO_SHA1 64#include <sha1.h> 65#endif 66#ifndef NO_SHA2 67#include <sha2.h> 68#endif 69 70#include "extern.h" 71 72#define INDENTNAMELEN 8 73#define MARK \ 74do { \ 75 if (flavor == F_FREEBSD9) { \ 76 len = printf("%s changed\n", RP(p)); \ 77 tab = "\t"; \ 78 } else { \ 79 len = printf("%s: ", RP(p)); \ 80 if (len > INDENTNAMELEN) { \ 81 tab = "\t"; \ 82 printf("\n"); \ 83 } else { \ 84 tab = ""; \ 85 printf("%*s", INDENTNAMELEN - (int)len, ""); \ 86 } \ 87 } \ 88} while (0) 89#define LABEL if (!label++) MARK 90 91#if HAVE_STRUCT_STAT_ST_FLAGS 92 93 94#define CHANGEFLAGS \ 95 if (flags != p->fts_statp->st_flags) { \ 96 char *sf; \ 97 if (!label) { \ 98 MARK; \ 99 sf = flags_to_string(p->fts_statp->st_flags, "none"); \ 100 printf("%sflags (\"%s\"", tab, sf); \ 101 free(sf); \ 102 } \ 103 if (lchflags(p->fts_accpath, flags)) { \ 104 label++; \ 105 printf(", not modified: %s)\n", \ 106 strerror(errno)); \ 107 } else { \ 108 sf = flags_to_string(flags, "none"); \ 109 printf(", modified to \"%s\")\n", sf); \ 110 free(sf); \ 111 } \ 112 } 113 114/* SETFLAGS: 115 * given pflags, additionally set those flags specified in s->st_flags and 116 * selected by mask (the other flags are left unchanged). 117 */ 118#define SETFLAGS(pflags, mask) \ 119do { \ 120 flags = (s->st_flags & (mask)) | (pflags); \ 121 CHANGEFLAGS; \ 122} while (0) 123 124/* CLEARFLAGS: 125 * given pflags, reset the flags specified in s->st_flags and selected by mask 126 * (the other flags are left unchanged). 127 */ 128#define CLEARFLAGS(pflags, mask) \ 129do { \ 130 flags = (~(s->st_flags & (mask)) & CH_MASK) & (pflags); \ 131 CHANGEFLAGS; \ 132} while (0) 133#endif /* HAVE_STRUCT_STAT_ST_FLAGS */ 134 135int 136compare(NODE *s, FTSENT *p) 137{ 138 u_int32_t len, val, flags; 139 int fd, label; 140 const char *cp, *tab; 141#if !defined(NO_MD5) || !defined(NO_RMD160) || !defined(NO_SHA1) || !defined(NO_SHA2) 142 char *digestbuf; 143#endif 144 145 tab = NULL; 146 label = 0; 147 switch(s->type) { 148 case F_BLOCK: 149 if (!S_ISBLK(p->fts_statp->st_mode)) 150 goto typeerr; 151 break; 152 case F_CHAR: 153 if (!S_ISCHR(p->fts_statp->st_mode)) 154 goto typeerr; 155 break; 156 case F_DIR: 157 if (!S_ISDIR(p->fts_statp->st_mode)) 158 goto typeerr; 159 break; 160 case F_FIFO: 161 if (!S_ISFIFO(p->fts_statp->st_mode)) 162 goto typeerr; 163 break; 164 case F_FILE: 165 if (!S_ISREG(p->fts_statp->st_mode)) 166 goto typeerr; 167 break; 168 case F_LINK: 169 if (!S_ISLNK(p->fts_statp->st_mode)) 170 goto typeerr; 171 break; 172#ifdef S_ISSOCK 173 case F_SOCK: 174 if (!S_ISSOCK(p->fts_statp->st_mode)) 175 goto typeerr; 176 break; 177#endif 178typeerr: LABEL; 179 printf(flavor == F_FREEBSD9 ? 180 "\ttype expected %s found %s\n" : "\ttype (%s, %s)\n", 181 nodetype(s->type), inotype(p->fts_statp->st_mode)); 182 return (label); 183 } 184 if (mtree_Wflag) 185 goto afterpermwhack; 186#if HAVE_STRUCT_STAT_ST_FLAGS 187 if (iflag && !uflag) { 188 if (s->flags & F_FLAGS) 189 SETFLAGS(p->fts_statp->st_flags, SP_FLGS); 190 return (label); 191 } 192 if (mflag && !uflag) { 193 if (s->flags & F_FLAGS) 194 CLEARFLAGS(p->fts_statp->st_flags, SP_FLGS); 195 return (label); 196 } 197#endif 198 if (s->flags & F_DEV && 199 (s->type == F_BLOCK || s->type == F_CHAR) && 200 s->st_rdev != p->fts_statp->st_rdev) { 201 LABEL; 202 printf(flavor == F_FREEBSD9 ? 203 "%sdevice expected %#jx found %#jx" : 204 "%sdevice (%#jx, %#jx", 205 tab, (uintmax_t)s->st_rdev, 206 (uintmax_t)p->fts_statp->st_rdev); 207 if (uflag) { 208 if ((unlink(p->fts_accpath) == -1) || 209 (mknod(p->fts_accpath, 210 s->st_mode | nodetoino(s->type), 211 s->st_rdev) == -1) || 212 (lchown(p->fts_accpath, p->fts_statp->st_uid, 213 p->fts_statp->st_gid) == -1) ) 214 printf(", not modified: %s%s\n", 215 strerror(errno), 216 flavor == F_FREEBSD9 ? "" : ")"); 217 else 218 printf(", modified%s\n", 219 flavor == F_FREEBSD9 ? "" : ")"); 220 } else 221 printf(")\n"); 222 tab = "\t"; 223 } 224 /* Set the uid/gid first, then set the mode. */ 225 if (s->flags & (F_UID | F_UNAME) && s->st_uid != p->fts_statp->st_uid) { 226 LABEL; 227 printf(flavor == F_FREEBSD9 ? 228 "%suser expected %lu found %lu" : "%suser (%lu, %lu", 229 tab, (u_long)s->st_uid, (u_long)p->fts_statp->st_uid); 230 if (uflag) { 231 if (lchown(p->fts_accpath, s->st_uid, -1)) 232 printf(", not modified: %s%s\n", 233 strerror(errno), 234 flavor == F_FREEBSD9 ? "" : ")"); 235 else 236 printf(", modified%s\n", 237 flavor == F_FREEBSD9 ? "" : ")"); 238 } else 239 printf(")\n"); 240 tab = "\t"; 241 } 242 if (s->flags & (F_GID | F_GNAME) && s->st_gid != p->fts_statp->st_gid) { 243 LABEL; 244 printf(flavor == F_FREEBSD9 ? 245 "%sgid expected %lu found %lu" : "%sgid (%lu, %lu", 246 tab, (u_long)s->st_gid, (u_long)p->fts_statp->st_gid); 247 if (uflag) { 248 if (lchown(p->fts_accpath, -1, s->st_gid)) 249 printf(", not modified: %s%s\n", 250 strerror(errno), 251 flavor == F_FREEBSD9 ? "" : ")"); 252 else 253 printf(", modified%s\n", 254 flavor == F_FREEBSD9 ? "" : ")"); 255 } 256 else 257 printf(")\n"); 258 tab = "\t"; 259 } 260 if (s->flags & F_MODE && 261 s->st_mode != (p->fts_statp->st_mode & MBITS)) { 262 if (lflag) { 263 mode_t tmode, mode; 264 265 tmode = s->st_mode; 266 mode = p->fts_statp->st_mode & MBITS; 267 /* 268 * if none of the suid/sgid/etc bits are set, 269 * then if the mode is a subset of the target, 270 * skip. 271 */ 272 if (!((tmode & ~(S_IRWXU|S_IRWXG|S_IRWXO)) || 273 (mode & ~(S_IRWXU|S_IRWXG|S_IRWXO)))) 274 if ((mode | tmode) == tmode) 275 goto skip; 276 } 277 278 LABEL; 279 printf(flavor == F_FREEBSD9 ? 280 "%spermissions expcted %#lo found %#lo" : 281 "%spermissions (%#lo, %#lo", 282 tab, (u_long)s->st_mode, 283 (u_long)p->fts_statp->st_mode & MBITS); 284 if (uflag) { 285 if (lchmod(p->fts_accpath, s->st_mode)) 286 printf(", not modified: %s%s\n", 287 strerror(errno), 288 flavor == F_FREEBSD9 ? "" : ")"); 289 else 290 printf(", modified%s\n", 291 flavor == F_FREEBSD9 ? "" : ")"); 292 } 293 else 294 printf(")\n"); 295 tab = "\t"; 296 skip: ; 297 } 298 if (s->flags & F_NLINK && s->type != F_DIR && 299 s->st_nlink != p->fts_statp->st_nlink) { 300 LABEL; 301 printf(flavor == F_FREEBSD9 ? 302 "%slink count expected %lu found %lu\n" : 303 "%slink count (%lu, %lu)\n", 304 tab, (u_long)s->st_nlink, (u_long)p->fts_statp->st_nlink); 305 tab = "\t"; 306 } 307 if (s->flags & F_SIZE && s->st_size != p->fts_statp->st_size) { 308 LABEL; 309 printf(flavor == F_FREEBSD9 ? 310 "%ssize expected %ju found %ju\n" : "%ssize (%ju, %ju)\n", 311 tab, (uintmax_t)s->st_size, 312 (uintmax_t)p->fts_statp->st_size); 313 tab = "\t"; 314 } 315 /* 316 * XXX 317 * Since utimes(2) only takes a timeval, there's no point in 318 * comparing the low bits of the timespec nanosecond field. This 319 * will only result in mismatches that we can never fix. 320 * 321 * Doesn't display microsecond differences. 322 */ 323 if (s->flags & F_TIME) { 324 struct timeval tv[2]; 325 struct stat *ps = p->fts_statp; 326 time_t smtime = s->st_mtimespec.tv_sec; 327 328#if defined(BSD4_4) && !defined(HAVE_NBTOOL_CONFIG_H) 329 time_t pmtime = ps->st_mtimespec.tv_sec; 330 331 TIMESPEC_TO_TIMEVAL(&tv[0], &s->st_mtimespec); 332 TIMESPEC_TO_TIMEVAL(&tv[1], &ps->st_mtimespec); 333#else 334 time_t pmtime = (time_t)ps->st_mtime; 335 336 tv[0].tv_sec = smtime; 337 tv[0].tv_usec = 0; 338 tv[1].tv_sec = pmtime; 339 tv[1].tv_usec = 0; 340#endif 341 342 if (tv[0].tv_sec != tv[1].tv_sec || 343 tv[0].tv_usec != tv[1].tv_usec) { 344 LABEL; 345 printf(flavor == F_FREEBSD9 ? 346 "%smodification time expected %.24s found " : 347 "%smodification time (%.24s, ", 348 tab, ctime(&smtime)); 349 printf("%.24s", ctime(&pmtime)); 350 if (tflag) { 351 tv[1] = tv[0]; 352 if (utimes(p->fts_accpath, tv)) 353 printf(", not modified: %s%s\n", 354 strerror(errno), 355 flavor == F_FREEBSD9 ? "" : ")"); 356 else 357 printf(", modified%s\n", 358 flavor == F_FREEBSD9 ? "" : ")"); 359 } else 360 printf("%s\n", flavor == F_FREEBSD9 ? "" : ")"); 361 tab = "\t"; 362 } 363 } 364#if HAVE_STRUCT_STAT_ST_FLAGS 365 /* 366 * XXX 367 * since lchflags(2) will reset file times, the utimes() above 368 * may have been useless! oh well, we'd rather have correct 369 * flags, rather than times? 370 */ 371 if ((s->flags & F_FLAGS) && ((s->st_flags != p->fts_statp->st_flags) 372 || mflag || iflag)) { 373 if (s->st_flags != p->fts_statp->st_flags) { 374 char *f_s; 375 LABEL; 376 f_s = flags_to_string(s->st_flags, "none"); 377 printf(flavor == F_FREEBSD9 ? 378 "%sflags expected \"%s\" found " : 379 "%sflags (\"%s\" is not ", tab, f_s); 380 free(f_s); 381 f_s = flags_to_string(p->fts_statp->st_flags, "none"); 382 printf("\"%s\"", f_s); 383 free(f_s); 384 } 385 if (uflag) { 386 if (iflag) 387 SETFLAGS(0, CH_MASK); 388 else if (mflag) 389 CLEARFLAGS(0, SP_FLGS); 390 else 391 SETFLAGS(0, (~SP_FLGS & CH_MASK)); 392 } else 393 printf("%s\n", flavor == F_FREEBSD9 ? "" : ")"); 394 tab = "\t"; 395 } 396#endif /* HAVE_STRUCT_STAT_ST_FLAGS */ 397 398 /* 399 * from this point, no more permission checking or whacking 400 * occurs, only checking of stuff like checksums and symlinks. 401 */ 402 afterpermwhack: 403 if (s->flags & F_CKSUM) { 404 if ((fd = open(p->fts_accpath, O_RDONLY, 0)) < 0) { 405 LABEL; 406 printf("%scksum: %s: %s\n", 407 tab, p->fts_accpath, strerror(errno)); 408 tab = "\t"; 409 } else if (crc(fd, &val, &len)) { 410 close(fd); 411 LABEL; 412 printf("%scksum: %s: %s\n", 413 tab, p->fts_accpath, strerror(errno)); 414 tab = "\t"; 415 } else { 416 close(fd); 417 if (s->cksum != val) { 418 LABEL; 419 printf(flavor == F_FREEBSD9 ? 420 "%scksum expected %lu found %lu\n" : 421 "%scksum (%lu, %lu)\n", 422 tab, s->cksum, (unsigned long)val); 423 } 424 tab = "\t"; 425 } 426 } 427#ifndef NO_MD5 428 if (s->flags & F_MD5) { 429 if ((digestbuf = MD5File(p->fts_accpath, NULL)) == NULL) { 430 LABEL; 431 printf("%s%s: %s: %s\n", 432 tab, MD5KEY, p->fts_accpath, strerror(errno)); 433 tab = "\t"; 434 } else { 435 if (strcmp(s->md5digest, digestbuf)) { 436 LABEL; 437 printf(flavor == F_FREEBSD9 ? 438 "%s%s expected %s found %s\n" : 439 "%s%s (0x%s, 0x%s)\n", 440 tab, MD5KEY, s->md5digest, digestbuf); 441 } 442 tab = "\t"; 443 free(digestbuf); 444 } 445 } 446#endif /* ! NO_MD5 */ 447#ifndef NO_RMD160 448 if (s->flags & F_RMD160) { 449 if ((digestbuf = RMD160File(p->fts_accpath, NULL)) == NULL) { 450 LABEL; 451 printf("%s%s: %s: %s\n", 452 tab, RMD160KEY, p->fts_accpath, strerror(errno)); 453 tab = "\t"; 454 } else { 455 if (strcmp(s->rmd160digest, digestbuf)) { 456 LABEL; 457 printf(flavor == F_FREEBSD9 ? 458 "%s%s expected %s found %s\n" : 459 "%s%s (0x%s, 0x%s)\n", 460 tab, RMD160KEY, s->rmd160digest, digestbuf); 461 } 462 tab = "\t"; 463 free(digestbuf); 464 } 465 } 466#endif /* ! NO_RMD160 */ 467#ifndef NO_SHA1 468 if (s->flags & F_SHA1) { 469 if ((digestbuf = SHA1File(p->fts_accpath, NULL)) == NULL) { 470 LABEL; 471 printf("%s%s: %s: %s\n", 472 tab, SHA1KEY, p->fts_accpath, strerror(errno)); 473 tab = "\t"; 474 } else { 475 if (strcmp(s->sha1digest, digestbuf)) { 476 LABEL; 477 printf(flavor == F_FREEBSD9 ? 478 "%s%s expected %s found %s\n" : 479 "%s%s (0x%s, 0x%s)\n", 480 tab, SHA1KEY, s->sha1digest, digestbuf); 481 } 482 tab = "\t"; 483 free(digestbuf); 484 } 485 } 486#endif /* ! NO_SHA1 */ 487#ifndef NO_SHA2 488 if (s->flags & F_SHA256) { 489 if ((digestbuf = SHA256_File(p->fts_accpath, NULL)) == NULL) { 490 LABEL; 491 printf("%s%s: %s: %s\n", 492 tab, SHA256KEY, p->fts_accpath, strerror(errno)); 493 tab = "\t"; 494 } else { 495 if (strcmp(s->sha256digest, digestbuf)) { 496 LABEL; 497 printf(flavor == F_FREEBSD9 ? 498 "%s%s expected %s found %s\n" : 499 "%s%s (0x%s, 0x%s)\n", 500 tab, SHA256KEY, s->sha256digest, digestbuf); 501 } 502 tab = "\t"; 503 free(digestbuf); 504 } 505 } 506#ifdef SHA384_BLOCK_LENGTH 507 if (s->flags & F_SHA384) { 508 if ((digestbuf = SHA384_File(p->fts_accpath, NULL)) == NULL) { 509 LABEL; 510 printf("%s%s: %s: %s\n", 511 tab, SHA384KEY, p->fts_accpath, strerror(errno)); 512 tab = "\t"; 513 } else { 514 if (strcmp(s->sha384digest, digestbuf)) { 515 LABEL; 516 printf(flavor == F_FREEBSD9 ? 517 "%s%s expected %s found %s\n" : 518 "%s%s (0x%s, 0x%s)\n", 519 tab, SHA384KEY, s->sha384digest, digestbuf); 520 } 521 tab = "\t"; 522 free(digestbuf); 523 } 524 } 525#endif 526 if (s->flags & F_SHA512) { 527 if ((digestbuf = SHA512_File(p->fts_accpath, NULL)) == NULL) { 528 LABEL; 529 printf("%s%s: %s: %s\n", 530 tab, SHA512KEY, p->fts_accpath, strerror(errno)); 531 tab = "\t"; 532 } else { 533 if (strcmp(s->sha512digest, digestbuf)) { 534 LABEL; 535 printf(flavor == F_FREEBSD9 ? 536 "%s%s expected %s found %s\n" : 537 "%s%s (0x%s, 0x%s)\n", 538 tab, SHA512KEY, s->sha512digest, digestbuf); 539 } 540 tab = "\t"; 541 free(digestbuf); 542 } 543 } 544#endif /* ! NO_SHA2 */ 545 if (s->flags & F_SLINK && 546 strcmp(cp = rlink(p->fts_accpath), s->slink)) { 547 LABEL; 548 printf(flavor == F_FREEBSD9 ? 549 "%slink ref expected %s found %s" : 550 "%slink ref (%s, %s", tab, cp, s->slink); 551 if (uflag) { 552 if ((unlink(p->fts_accpath) == -1) || 553 (symlink(s->slink, p->fts_accpath) == -1) ) 554 printf(", not modified: %s%s\n", 555 strerror(errno), 556 flavor == F_FREEBSD9 ? "" : ")"); 557 else 558 printf(", modified%s\n", 559 flavor == F_FREEBSD9 ? "" : ")"); 560 } else 561 printf("%s\n", flavor == F_FREEBSD9 ? "" : ")"); 562 } 563 return (label); 564} 565 566const char * 567rlink(const char *name) 568{ 569 static char lbuf[MAXPATHLEN]; 570 int len; 571 572 if ((len = readlink(name, lbuf, sizeof(lbuf) - 1)) == -1) 573 mtree_err("%s: %s", name, strerror(errno)); 574 lbuf[len] = '\0'; 575 return (lbuf); 576} 577