1 /* $NetBSD: function.c,v 1.34 2000/10/10 14:30:41 enami Exp $ */ 2 3 /*- 4 * Copyright (c) 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Cimarron D. Taylor of the University of California, Berkeley. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 #ifndef lint 41 #if 0 42 static char sccsid[] = "from: @(#)function.c 8.10 (Berkeley) 5/4/95"; 43 #else 44 __RCSID("$NetBSD: function.c,v 1.34 2000/10/10 14:30:41 enami Exp $"); 45 #endif 46 #endif /* not lint */ 47 48 #include <sys/param.h> 49 #include <sys/stat.h> 50 #include <sys/wait.h> 51 #include <sys/mount.h> 52 53 #include <err.h> 54 #include <errno.h> 55 #include <fnmatch.h> 56 #include <fts.h> 57 #include <grp.h> 58 #include <inttypes.h> 59 #include <pwd.h> 60 #include <stdio.h> 61 #include <stdlib.h> 62 #include <string.h> 63 #include <tzfile.h> 64 #include <unistd.h> 65 66 #include "find.h" 67 #include "stat_flags.h" 68 69 #define COMPARE(a, b) { \ 70 switch (plan->flags) { \ 71 case F_EQUAL: \ 72 return (a == b); \ 73 case F_LESSTHAN: \ 74 return (a < b); \ 75 case F_GREATER: \ 76 return (a > b); \ 77 default: \ 78 abort(); \ 79 } \ 80 } 81 82 static int64_t find_parsenum __P((PLAN *, char *, char *, char *)); 83 int f_always_true __P((PLAN *, FTSENT *)); 84 int f_amin __P((PLAN *, FTSENT *)); 85 int f_atime __P((PLAN *, FTSENT *)); 86 int f_cmin __P((PLAN *, FTSENT *)); 87 int f_ctime __P((PLAN *, FTSENT *)); 88 int f_exec __P((PLAN *, FTSENT *)); 89 int f_flags __P((PLAN *, FTSENT *)); 90 int f_fstype __P((PLAN *, FTSENT *)); 91 int f_group __P((PLAN *, FTSENT *)); 92 int f_inum __P((PLAN *, FTSENT *)); 93 int f_links __P((PLAN *, FTSENT *)); 94 int f_ls __P((PLAN *, FTSENT *)); 95 int f_mmin __P((PLAN *, FTSENT *)); 96 int f_mtime __P((PLAN *, FTSENT *)); 97 int f_name __P((PLAN *, FTSENT *)); 98 int f_newer __P((PLAN *, FTSENT *)); 99 int f_nogroup __P((PLAN *, FTSENT *)); 100 int f_nouser __P((PLAN *, FTSENT *)); 101 int f_path __P((PLAN *, FTSENT *)); 102 int f_perm __P((PLAN *, FTSENT *)); 103 int f_print __P((PLAN *, FTSENT *)); 104 int f_print0 __P((PLAN *, FTSENT *)); 105 int f_printx __P((PLAN *, FTSENT *)); 106 int f_prune __P((PLAN *, FTSENT *)); 107 int f_regex __P((PLAN *, FTSENT *)); 108 int f_size __P((PLAN *, FTSENT *)); 109 int f_type __P((PLAN *, FTSENT *)); 110 int f_user __P((PLAN *, FTSENT *)); 111 int f_not __P((PLAN *, FTSENT *)); 112 int f_or __P((PLAN *, FTSENT *)); 113 static PLAN *c_regex_common __P((char ***, int, enum ntype, int)); 114 static PLAN *palloc __P((enum ntype, int (*) __P((PLAN *, FTSENT *)))); 115 116 /* 117 * find_parsenum -- 118 * Parse a string of the form [+-]# and return the value. 119 */ 120 static int64_t 121 find_parsenum(plan, option, vp, endch) 122 PLAN *plan; 123 char *option, *vp, *endch; 124 { 125 int64_t value; 126 char *endchar, *str; /* Pointer to character ending conversion. */ 127 128 /* Determine comparison from leading + or -. */ 129 str = vp; 130 switch (*str) { 131 case '+': 132 ++str; 133 plan->flags = F_GREATER; 134 break; 135 case '-': 136 ++str; 137 plan->flags = F_LESSTHAN; 138 break; 139 default: 140 plan->flags = F_EQUAL; 141 break; 142 } 143 144 /* 145 * Convert the string with strtol(). Note, if strtol() returns zero 146 * and endchar points to the beginning of the string we know we have 147 * a syntax error. 148 */ 149 value = strtoq(str, &endchar, 10); 150 if (value == 0 && endchar == str) 151 errx(1, "%s: %s: illegal numeric value", option, vp); 152 if (endchar[0] && (endch == NULL || endchar[0] != *endch)) 153 errx(1, "%s: %s: illegal trailing character", option, vp); 154 if (endch) 155 *endch = endchar[0]; 156 return (value); 157 } 158 159 /* 160 * The value of n for the inode times (atime, ctime, and mtime) is a range, 161 * i.e. n matches from (n - 1) to n 24 hour periods. This interacts with 162 * -n, such that "-mtime -1" would be less than 0 days, which isn't what the 163 * user wanted. Correct so that -1 is "less than 1". 164 */ 165 #define TIME_CORRECT(p, ttype) \ 166 if ((p)->type == ttype && (p)->flags == F_LESSTHAN) \ 167 ++((p)->t_data); 168 169 /* 170 * -amin n functions -- 171 * 172 * True if the difference between the file access time and the 173 * current time is n 1 minute periods. 174 */ 175 int 176 f_amin(plan, entry) 177 PLAN *plan; 178 FTSENT *entry; 179 { 180 extern time_t now; 181 182 COMPARE((now - entry->fts_statp->st_atime + 183 SECSPERMIN - 1) / SECSPERMIN, plan->t_data); 184 } 185 186 PLAN * 187 c_amin(argvp, isok) 188 char ***argvp; 189 int isok; 190 { 191 char *arg = **argvp; 192 PLAN *new; 193 194 (*argvp)++; 195 ftsoptions &= ~FTS_NOSTAT; 196 197 new = palloc(N_AMIN, f_amin); 198 new->t_data = find_parsenum(new, "-amin", arg, NULL); 199 TIME_CORRECT(new, N_AMIN); 200 return (new); 201 } 202 /* 203 * -atime n functions -- 204 * 205 * True if the difference between the file access time and the 206 * current time is n 24 hour periods. 207 */ 208 int 209 f_atime(plan, entry) 210 PLAN *plan; 211 FTSENT *entry; 212 { 213 extern time_t now; 214 215 COMPARE((now - entry->fts_statp->st_atime + 216 SECSPERDAY - 1) / SECSPERDAY, plan->t_data); 217 } 218 219 PLAN * 220 c_atime(argvp, isok) 221 char ***argvp; 222 int isok; 223 { 224 char *arg = **argvp; 225 PLAN *new; 226 227 (*argvp)++; 228 ftsoptions &= ~FTS_NOSTAT; 229 230 new = palloc(N_ATIME, f_atime); 231 new->t_data = find_parsenum(new, "-atime", arg, NULL); 232 TIME_CORRECT(new, N_ATIME); 233 return (new); 234 } 235 /* 236 * -cmin n functions -- 237 * 238 * True if the difference between the last change of file 239 * status information and the current time is n 24 hour periods. 240 */ 241 int 242 f_cmin(plan, entry) 243 PLAN *plan; 244 FTSENT *entry; 245 { 246 extern time_t now; 247 248 COMPARE((now - entry->fts_statp->st_ctime + 249 SECSPERMIN - 1) / SECSPERMIN, plan->t_data); 250 } 251 252 PLAN * 253 c_cmin(argvp, isok) 254 char ***argvp; 255 int isok; 256 { 257 char *arg = **argvp; 258 PLAN *new; 259 260 (*argvp)++; 261 ftsoptions &= ~FTS_NOSTAT; 262 263 new = palloc(N_CMIN, f_cmin); 264 new->t_data = find_parsenum(new, "-cmin", arg, NULL); 265 TIME_CORRECT(new, N_CMIN); 266 return (new); 267 } 268 /* 269 * -ctime n functions -- 270 * 271 * True if the difference between the last change of file 272 * status information and the current time is n 24 hour periods. 273 */ 274 int 275 f_ctime(plan, entry) 276 PLAN *plan; 277 FTSENT *entry; 278 { 279 extern time_t now; 280 281 COMPARE((now - entry->fts_statp->st_ctime + 282 SECSPERDAY - 1) / SECSPERDAY, plan->t_data); 283 } 284 285 PLAN * 286 c_ctime(argvp, isok) 287 char ***argvp; 288 int isok; 289 { 290 char *arg = **argvp; 291 PLAN *new; 292 293 (*argvp)++; 294 ftsoptions &= ~FTS_NOSTAT; 295 296 new = palloc(N_CTIME, f_ctime); 297 new->t_data = find_parsenum(new, "-ctime", arg, NULL); 298 TIME_CORRECT(new, N_CTIME); 299 return (new); 300 } 301 302 /* 303 * -depth functions -- 304 * 305 * Always true, causes descent of the directory hierarchy to be done 306 * so that all entries in a directory are acted on before the directory 307 * itself. 308 */ 309 int 310 f_always_true(plan, entry) 311 PLAN *plan; 312 FTSENT *entry; 313 { 314 315 return (1); 316 } 317 318 PLAN * 319 c_depth(argvp, isok) 320 char ***argvp; 321 int isok; 322 { 323 isdepth = 1; 324 325 return (palloc(N_DEPTH, f_always_true)); 326 } 327 328 /* 329 * [-exec | -ok] utility [arg ... ] ; functions -- 330 * 331 * True if the executed utility returns a zero value as exit status. 332 * The end of the primary expression is delimited by a semicolon. If 333 * "{}" occurs anywhere, it gets replaced by the current pathname. 334 * The current directory for the execution of utility is the same as 335 * the current directory when the find utility was started. 336 * 337 * The primary -ok is different in that it requests affirmation of the 338 * user before executing the utility. 339 */ 340 int 341 f_exec(plan, entry) 342 PLAN *plan; 343 FTSENT *entry; 344 { 345 extern int dotfd; 346 int cnt; 347 pid_t pid; 348 int status; 349 350 for (cnt = 0; plan->e_argv[cnt]; ++cnt) 351 if (plan->e_len[cnt]) 352 brace_subst(plan->e_orig[cnt], &plan->e_argv[cnt], 353 entry->fts_path, plan->e_len[cnt]); 354 355 if (plan->flags == F_NEEDOK && !queryuser(plan->e_argv)) 356 return (0); 357 358 /* don't mix output of command with find output */ 359 fflush(stdout); 360 fflush(stderr); 361 362 switch (pid = vfork()) { 363 case -1: 364 err(1, "fork"); 365 /* NOTREACHED */ 366 case 0: 367 if (fchdir(dotfd)) { 368 warn("chdir"); 369 _exit(1); 370 } 371 execvp(plan->e_argv[0], plan->e_argv); 372 warn("%s", plan->e_argv[0]); 373 _exit(1); 374 } 375 pid = waitpid(pid, &status, 0); 376 return (pid != -1 && WIFEXITED(status) && !WEXITSTATUS(status)); 377 } 378 379 /* 380 * c_exec -- 381 * build three parallel arrays, one with pointers to the strings passed 382 * on the command line, one with (possibly duplicated) pointers to the 383 * argv array, and one with integer values that are lengths of the 384 * strings, but also flags meaning that the string has to be massaged. 385 */ 386 PLAN * 387 c_exec(argvp, isok) 388 char ***argvp; 389 int isok; 390 { 391 PLAN *new; /* node returned */ 392 int cnt; 393 char **argv, **ap, *p; 394 395 isoutput = 1; 396 397 new = palloc(N_EXEC, f_exec); 398 if (isok) 399 new->flags = F_NEEDOK; 400 401 for (ap = argv = *argvp;; ++ap) { 402 if (!*ap) 403 errx(1, 404 "%s: no terminating \";\"", isok ? "-ok" : "-exec"); 405 if (**ap == ';') 406 break; 407 } 408 409 cnt = ap - *argvp + 1; 410 new->e_argv = (char **)emalloc((u_int)cnt * sizeof(char *)); 411 new->e_orig = (char **)emalloc((u_int)cnt * sizeof(char *)); 412 new->e_len = (int *)emalloc((u_int)cnt * sizeof(int)); 413 414 for (argv = *argvp, cnt = 0; argv < ap; ++argv, ++cnt) { 415 new->e_orig[cnt] = *argv; 416 for (p = *argv; *p; ++p) 417 if (p[0] == '{' && p[1] == '}') { 418 new->e_argv[cnt] = emalloc((u_int)MAXPATHLEN); 419 new->e_len[cnt] = MAXPATHLEN; 420 break; 421 } 422 if (!*p) { 423 new->e_argv[cnt] = *argv; 424 new->e_len[cnt] = 0; 425 } 426 } 427 new->e_argv[cnt] = new->e_orig[cnt] = NULL; 428 429 *argvp = argv + 1; 430 return (new); 431 } 432 433 /* 434 * -flags [-]flags functions -- 435 */ 436 int 437 f_flags(plan, entry) 438 PLAN *plan; 439 FTSENT *entry; 440 { 441 u_int32_t flags; 442 443 flags = entry->fts_statp->st_flags; 444 if (plan->flags == F_ATLEAST) 445 return ((plan->f_data | flags) == flags); 446 else 447 return (flags == plan->f_data); 448 /* NOTREACHED */ 449 } 450 451 PLAN * 452 c_flags(argvp, isok) 453 char ***argvp; 454 int isok; 455 { 456 char *flags = **argvp; 457 PLAN *new; 458 u_long flagset; 459 460 (*argvp)++; 461 ftsoptions &= ~FTS_NOSTAT; 462 463 new = palloc(N_FLAGS, f_flags); 464 465 if (*flags == '-') { 466 new->flags = F_ATLEAST; 467 ++flags; 468 } 469 470 flagset = 0; 471 if ((strcmp(flags, "none") != 0) && 472 (string_to_flags(&flags, &flagset, NULL) != 0)) 473 errx(1, "-flags: %s: illegal flags string", flags); 474 new->f_data = flagset; 475 return (new); 476 } 477 478 479 /* 480 * -follow functions -- 481 * 482 * Always true, causes symbolic links to be followed on a global 483 * basis. 484 */ 485 PLAN * 486 c_follow(argvp, isok) 487 char ***argvp; 488 int isok; 489 { 490 ftsoptions &= ~FTS_PHYSICAL; 491 ftsoptions |= FTS_LOGICAL; 492 493 return (palloc(N_FOLLOW, f_always_true)); 494 } 495 496 /* 497 * -fstype functions -- 498 * 499 * True if the file is of a certain type. 500 */ 501 int 502 f_fstype(plan, entry) 503 PLAN *plan; 504 FTSENT *entry; 505 { 506 static dev_t curdev; /* need a guaranteed illegal dev value */ 507 static int first = 1; 508 struct statfs sb; 509 static short val; 510 static char fstype[MFSNAMELEN]; 511 char *p, save[2]; 512 513 /* Only check when we cross mount point. */ 514 if (first || curdev != entry->fts_statp->st_dev) { 515 curdev = entry->fts_statp->st_dev; 516 517 /* 518 * Statfs follows symlinks; find wants the link's file system, 519 * not where it points. 520 */ 521 if (entry->fts_info == FTS_SL || 522 entry->fts_info == FTS_SLNONE) { 523 if ((p = strrchr(entry->fts_accpath, '/')) != NULL) 524 ++p; 525 else 526 p = entry->fts_accpath; 527 save[0] = p[0]; 528 p[0] = '.'; 529 save[1] = p[1]; 530 p[1] = '\0'; 531 532 } else 533 p = NULL; 534 535 if (statfs(entry->fts_accpath, &sb)) 536 err(1, "%s", entry->fts_accpath); 537 538 if (p) { 539 p[0] = save[0]; 540 p[1] = save[1]; 541 } 542 543 first = 0; 544 545 /* 546 * Further tests may need both of these values, so 547 * always copy both of them. 548 */ 549 val = sb.f_flags; 550 strncpy(fstype, sb.f_fstypename, MFSNAMELEN); 551 } 552 switch (plan->flags) { 553 case F_MTFLAG: 554 return (val & plan->mt_data); 555 case F_MTTYPE: 556 return (strncmp(fstype, plan->c_data, MFSNAMELEN) == 0); 557 default: 558 abort(); 559 } 560 } 561 562 PLAN * 563 c_fstype(argvp, isok) 564 char ***argvp; 565 int isok; 566 { 567 char *arg = **argvp; 568 PLAN *new; 569 570 (*argvp)++; 571 ftsoptions &= ~FTS_NOSTAT; 572 573 new = palloc(N_FSTYPE, f_fstype); 574 575 switch (*arg) { 576 case 'l': 577 if (!strcmp(arg, "local")) { 578 new->flags = F_MTFLAG; 579 new->mt_data = MNT_LOCAL; 580 return (new); 581 } 582 break; 583 case 'r': 584 if (!strcmp(arg, "rdonly")) { 585 new->flags = F_MTFLAG; 586 new->mt_data = MNT_RDONLY; 587 return (new); 588 } 589 break; 590 } 591 592 new->flags = F_MTTYPE; 593 new->c_data = arg; 594 return (new); 595 } 596 597 /* 598 * -group gname functions -- 599 * 600 * True if the file belongs to the group gname. If gname is numeric and 601 * an equivalent of the getgrnam() function does not return a valid group 602 * name, gname is taken as a group ID. 603 */ 604 int 605 f_group(plan, entry) 606 PLAN *plan; 607 FTSENT *entry; 608 { 609 610 return (entry->fts_statp->st_gid == plan->g_data); 611 } 612 613 PLAN * 614 c_group(argvp, isok) 615 char ***argvp; 616 int isok; 617 { 618 char *gname = **argvp; 619 PLAN *new; 620 struct group *g; 621 gid_t gid; 622 623 (*argvp)++; 624 ftsoptions &= ~FTS_NOSTAT; 625 626 g = getgrnam(gname); 627 if (g == NULL) { 628 gid = atoi(gname); 629 if (gid == 0 && gname[0] != '0') 630 errx(1, "-group: %s: no such group", gname); 631 } else 632 gid = g->gr_gid; 633 634 new = palloc(N_GROUP, f_group); 635 new->g_data = gid; 636 return (new); 637 } 638 639 /* 640 * -inum n functions -- 641 * 642 * True if the file has inode # n. 643 */ 644 int 645 f_inum(plan, entry) 646 PLAN *plan; 647 FTSENT *entry; 648 { 649 650 COMPARE(entry->fts_statp->st_ino, plan->i_data); 651 } 652 653 PLAN * 654 c_inum(argvp, isok) 655 char ***argvp; 656 int isok; 657 { 658 char *arg = **argvp; 659 PLAN *new; 660 661 (*argvp)++; 662 ftsoptions &= ~FTS_NOSTAT; 663 664 new = palloc(N_INUM, f_inum); 665 new->i_data = find_parsenum(new, "-inum", arg, NULL); 666 return (new); 667 } 668 669 /* 670 * -links n functions -- 671 * 672 * True if the file has n links. 673 */ 674 int 675 f_links(plan, entry) 676 PLAN *plan; 677 FTSENT *entry; 678 { 679 680 COMPARE(entry->fts_statp->st_nlink, plan->l_data); 681 } 682 683 PLAN * 684 c_links(argvp, isok) 685 char ***argvp; 686 int isok; 687 { 688 char *arg = **argvp; 689 PLAN *new; 690 691 (*argvp)++; 692 ftsoptions &= ~FTS_NOSTAT; 693 694 new = palloc(N_LINKS, f_links); 695 new->l_data = (nlink_t)find_parsenum(new, "-links", arg, NULL); 696 return (new); 697 } 698 699 /* 700 * -ls functions -- 701 * 702 * Always true - prints the current entry to stdout in "ls" format. 703 */ 704 int 705 f_ls(plan, entry) 706 PLAN *plan; 707 FTSENT *entry; 708 { 709 710 printlong(entry->fts_path, entry->fts_accpath, entry->fts_statp); 711 return (1); 712 } 713 714 PLAN * 715 c_ls(argvp, isok) 716 char ***argvp; 717 int isok; 718 { 719 720 ftsoptions &= ~FTS_NOSTAT; 721 isoutput = 1; 722 723 return (palloc(N_LS, f_ls)); 724 } 725 726 /* 727 * -mmin n functions -- 728 * 729 * True if the difference between the file modification time and the 730 * current time is n 24 hour periods. 731 */ 732 int 733 f_mmin(plan, entry) 734 PLAN *plan; 735 FTSENT *entry; 736 { 737 extern time_t now; 738 739 COMPARE((now - entry->fts_statp->st_mtime + SECSPERMIN - 1) / 740 SECSPERMIN, plan->t_data); 741 } 742 743 PLAN * 744 c_mmin(argvp, isok) 745 char ***argvp; 746 int isok; 747 { 748 char *arg = **argvp; 749 PLAN *new; 750 751 (*argvp)++; 752 ftsoptions &= ~FTS_NOSTAT; 753 754 new = palloc(N_MMIN, f_mmin); 755 new->t_data = find_parsenum(new, "-mmin", arg, NULL); 756 TIME_CORRECT(new, N_MMIN); 757 return (new); 758 } 759 /* 760 * -mtime n functions -- 761 * 762 * True if the difference between the file modification time and the 763 * current time is n 24 hour periods. 764 */ 765 int 766 f_mtime(plan, entry) 767 PLAN *plan; 768 FTSENT *entry; 769 { 770 extern time_t now; 771 772 COMPARE((now - entry->fts_statp->st_mtime + SECSPERDAY - 1) / 773 SECSPERDAY, plan->t_data); 774 } 775 776 PLAN * 777 c_mtime(argvp, isok) 778 char ***argvp; 779 int isok; 780 { 781 char *arg = **argvp; 782 PLAN *new; 783 784 (*argvp)++; 785 ftsoptions &= ~FTS_NOSTAT; 786 787 new = palloc(N_MTIME, f_mtime); 788 new->t_data = find_parsenum(new, "-mtime", arg, NULL); 789 TIME_CORRECT(new, N_MTIME); 790 return (new); 791 } 792 793 /* 794 * -name functions -- 795 * 796 * True if the basename of the filename being examined 797 * matches pattern using Pattern Matching Notation S3.14 798 */ 799 int 800 f_name(plan, entry) 801 PLAN *plan; 802 FTSENT *entry; 803 { 804 805 return (!fnmatch(plan->c_data, entry->fts_name, 0)); 806 } 807 808 PLAN * 809 c_name(argvp, isok) 810 char ***argvp; 811 int isok; 812 { 813 char *pattern = **argvp; 814 PLAN *new; 815 816 (*argvp)++; 817 new = palloc(N_NAME, f_name); 818 new->c_data = pattern; 819 return (new); 820 } 821 822 /* 823 * -newer file functions -- 824 * 825 * True if the current file has been modified more recently 826 * then the modification time of the file named by the pathname 827 * file. 828 */ 829 int 830 f_newer(plan, entry) 831 PLAN *plan; 832 FTSENT *entry; 833 { 834 835 return (entry->fts_statp->st_mtime > plan->t_data); 836 } 837 838 PLAN * 839 c_newer(argvp, isok) 840 char ***argvp; 841 int isok; 842 { 843 char *filename = **argvp; 844 PLAN *new; 845 struct stat sb; 846 847 (*argvp)++; 848 ftsoptions &= ~FTS_NOSTAT; 849 850 if (stat(filename, &sb)) 851 err(1, "%s", filename); 852 new = palloc(N_NEWER, f_newer); 853 new->t_data = sb.st_mtime; 854 return (new); 855 } 856 857 /* 858 * -nogroup functions -- 859 * 860 * True if file belongs to a user ID for which the equivalent 861 * of the getgrnam() 9.2.1 [POSIX.1] function returns NULL. 862 */ 863 int 864 f_nogroup(plan, entry) 865 PLAN *plan; 866 FTSENT *entry; 867 { 868 869 return (group_from_gid(entry->fts_statp->st_gid, 1) ? 0 : 1); 870 } 871 872 PLAN * 873 c_nogroup(argvp, isok) 874 char ***argvp; 875 int isok; 876 { 877 ftsoptions &= ~FTS_NOSTAT; 878 879 return (palloc(N_NOGROUP, f_nogroup)); 880 } 881 882 /* 883 * -nouser functions -- 884 * 885 * True if file belongs to a user ID for which the equivalent 886 * of the getpwuid() 9.2.2 [POSIX.1] function returns NULL. 887 */ 888 int 889 f_nouser(plan, entry) 890 PLAN *plan; 891 FTSENT *entry; 892 { 893 894 return (user_from_uid(entry->fts_statp->st_uid, 1) ? 0 : 1); 895 } 896 897 PLAN * 898 c_nouser(argvp, isok) 899 char ***argvp; 900 int isok; 901 { 902 ftsoptions &= ~FTS_NOSTAT; 903 904 return (palloc(N_NOUSER, f_nouser)); 905 } 906 907 /* 908 * -path functions -- 909 * 910 * True if the path of the filename being examined 911 * matches pattern using Pattern Matching Notation S3.14 912 */ 913 int 914 f_path(plan, entry) 915 PLAN *plan; 916 FTSENT *entry; 917 { 918 919 return (!fnmatch(plan->c_data, entry->fts_path, 0)); 920 } 921 922 PLAN * 923 c_path(argvp, isok) 924 char ***argvp; 925 int isok; 926 { 927 char *pattern = **argvp; 928 PLAN *new; 929 930 (*argvp)++; 931 new = palloc(N_NAME, f_path); 932 new->c_data = pattern; 933 return (new); 934 } 935 936 /* 937 * -perm functions -- 938 * 939 * The mode argument is used to represent file mode bits. If it starts 940 * with a leading digit, it's treated as an octal mode, otherwise as a 941 * symbolic mode. 942 */ 943 int 944 f_perm(plan, entry) 945 PLAN *plan; 946 FTSENT *entry; 947 { 948 mode_t mode; 949 950 mode = entry->fts_statp->st_mode & 951 (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO); 952 if (plan->flags == F_ATLEAST) 953 return ((plan->m_data | mode) == mode); 954 else 955 return (mode == plan->m_data); 956 /* NOTREACHED */ 957 } 958 959 PLAN * 960 c_perm(argvp, isok) 961 char ***argvp; 962 int isok; 963 { 964 char *perm = **argvp; 965 PLAN *new; 966 mode_t *set; 967 968 (*argvp)++; 969 ftsoptions &= ~FTS_NOSTAT; 970 971 new = palloc(N_PERM, f_perm); 972 973 if (*perm == '-') { 974 new->flags = F_ATLEAST; 975 ++perm; 976 } 977 978 if ((set = setmode(perm)) == NULL) 979 err(1, "-perm: %s: illegal mode string", perm); 980 981 new->m_data = getmode(set, 0); 982 free(set); 983 return (new); 984 } 985 986 /* 987 * -print functions -- 988 * 989 * Always true, causes the current pathame to be written to 990 * standard output. 991 */ 992 int 993 f_print(plan, entry) 994 PLAN *plan; 995 FTSENT *entry; 996 { 997 998 (void)printf("%s\n", entry->fts_path); 999 return (1); 1000 } 1001 1002 int 1003 f_print0(plan, entry) 1004 PLAN *plan; 1005 FTSENT *entry; 1006 { 1007 1008 (void)fputs(entry->fts_path, stdout); 1009 (void)fputc('\0', stdout); 1010 return (1); 1011 } 1012 1013 int 1014 f_printx(plan, entry) 1015 PLAN *plan; 1016 FTSENT *entry; 1017 { 1018 char *cp; 1019 1020 for (cp = entry->fts_path; *cp; cp++) { 1021 if (*cp == '\'' || *cp == '\"' || *cp == ' ' || 1022 *cp == '\t' || *cp == '\n' || *cp == '\\') 1023 fputc('\\', stdout); 1024 1025 fputc(*cp, stdout); 1026 } 1027 1028 fputc('\n', stdout); 1029 return (1); 1030 } 1031 1032 PLAN * 1033 c_print(argvp, isok) 1034 char ***argvp; 1035 int isok; 1036 { 1037 1038 isoutput = 1; 1039 1040 return (palloc(N_PRINT, f_print)); 1041 } 1042 1043 PLAN * 1044 c_print0(argvp, isok) 1045 char ***argvp; 1046 int isok; 1047 { 1048 1049 isoutput = 1; 1050 1051 return (palloc(N_PRINT0, f_print0)); 1052 } 1053 1054 PLAN * 1055 c_printx(argvp, isok) 1056 char ***argvp; 1057 int isok; 1058 { 1059 1060 isoutput = 1; 1061 1062 return (palloc(N_PRINTX, f_printx)); 1063 } 1064 1065 /* 1066 * -prune functions -- 1067 * 1068 * Prune a portion of the hierarchy. 1069 */ 1070 int 1071 f_prune(plan, entry) 1072 PLAN *plan; 1073 FTSENT *entry; 1074 { 1075 extern FTS *tree; 1076 1077 if (fts_set(tree, entry, FTS_SKIP)) 1078 err(1, "%s", entry->fts_path); 1079 return (1); 1080 } 1081 1082 PLAN * 1083 c_prune(argvp, isok) 1084 char ***argvp; 1085 int isok; 1086 { 1087 1088 return (palloc(N_PRUNE, f_prune)); 1089 } 1090 1091 /* 1092 * -regex regexp (and related) functions -- 1093 * 1094 * True if the complete file path matches the regular expression regexp. 1095 * For -regex, regexp is a case-sensitive (basic) regular expression. 1096 * For -iregex, regexp is a case-insensitive (basic) regular expression. 1097 */ 1098 int 1099 f_regex(plan, entry) 1100 PLAN *plan; 1101 FTSENT *entry; 1102 { 1103 1104 return (regexec(&plan->regexp_data, entry->fts_path, 0, NULL, 0) == 0); 1105 } 1106 1107 static PLAN * 1108 c_regex_common(argvp, isok, type, regcomp_flags) 1109 char ***argvp; 1110 int isok, regcomp_flags; 1111 enum ntype type; 1112 { 1113 char errbuf[LINE_MAX]; 1114 regex_t reg; 1115 char *regexp = **argvp; 1116 char *lineregexp; 1117 PLAN *new; 1118 int rv; 1119 1120 (*argvp)++; 1121 1122 lineregexp = alloca(strlen(regexp) + 1 + 6); /* max needed */ 1123 sprintf(lineregexp, "^%s(%s%s)$", 1124 (regcomp_flags & REG_EXTENDED) ? "" : "\\", regexp, 1125 (regcomp_flags & REG_EXTENDED) ? "" : "\\"); 1126 rv = regcomp(®, lineregexp, REG_NOSUB|regcomp_flags); 1127 if (rv != 0) { 1128 regerror(rv, ®, errbuf, sizeof errbuf); 1129 errx(1, "regexp %s: %s", regexp, errbuf); 1130 } 1131 1132 new = palloc(type, f_regex); 1133 new->regexp_data = reg; 1134 return (new); 1135 } 1136 1137 PLAN * 1138 c_regex(argvp, isok) 1139 char ***argvp; 1140 int isok; 1141 { 1142 1143 return (c_regex_common(argvp, isok, N_REGEX, REG_BASIC)); 1144 } 1145 1146 PLAN * 1147 c_iregex(argvp, isok) 1148 char ***argvp; 1149 int isok; 1150 { 1151 1152 return (c_regex_common(argvp, isok, N_IREGEX, REG_BASIC|REG_ICASE)); 1153 } 1154 1155 /* 1156 * -size n[c] functions -- 1157 * 1158 * True if the file size in bytes, divided by an implementation defined 1159 * value and rounded up to the next integer, is n. If n is followed by 1160 * a c, the size is in bytes. 1161 */ 1162 #define FIND_SIZE 512 1163 static int divsize = 1; 1164 1165 int 1166 f_size(plan, entry) 1167 PLAN *plan; 1168 FTSENT *entry; 1169 { 1170 off_t size; 1171 1172 size = divsize ? (entry->fts_statp->st_size + FIND_SIZE - 1) / 1173 FIND_SIZE : entry->fts_statp->st_size; 1174 COMPARE(size, plan->o_data); 1175 } 1176 1177 PLAN * 1178 c_size(argvp, isok) 1179 char ***argvp; 1180 int isok; 1181 { 1182 char *arg = **argvp; 1183 PLAN *new; 1184 char endch; 1185 1186 (*argvp)++; 1187 ftsoptions &= ~FTS_NOSTAT; 1188 1189 new = palloc(N_SIZE, f_size); 1190 endch = 'c'; 1191 new->o_data = find_parsenum(new, "-size", arg, &endch); 1192 if (endch == 'c') 1193 divsize = 0; 1194 return (new); 1195 } 1196 1197 /* 1198 * -type c functions -- 1199 * 1200 * True if the type of the file is c, where c is b, c, d, p, f or w 1201 * for block special file, character special file, directory, FIFO, 1202 * regular file or whiteout respectively. 1203 */ 1204 int 1205 f_type(plan, entry) 1206 PLAN *plan; 1207 FTSENT *entry; 1208 { 1209 1210 return ((entry->fts_statp->st_mode & S_IFMT) == plan->m_data); 1211 } 1212 1213 PLAN * 1214 c_type(argvp, isok) 1215 char ***argvp; 1216 int isok; 1217 { 1218 char *typestring = **argvp; 1219 PLAN *new; 1220 mode_t mask = (mode_t)0; 1221 1222 (*argvp)++; 1223 ftsoptions &= ~FTS_NOSTAT; 1224 1225 switch (typestring[0]) { 1226 #ifdef S_IFWHT 1227 case 'W': 1228 #ifdef FTS_WHITEOUT 1229 ftsoptions |= FTS_WHITEOUT; 1230 #endif 1231 mask = S_IFWHT; 1232 break; 1233 #endif 1234 case 'b': 1235 mask = S_IFBLK; 1236 break; 1237 case 'c': 1238 mask = S_IFCHR; 1239 break; 1240 case 'd': 1241 mask = S_IFDIR; 1242 break; 1243 case 'f': 1244 mask = S_IFREG; 1245 break; 1246 case 'l': 1247 mask = S_IFLNK; 1248 break; 1249 case 'p': 1250 mask = S_IFIFO; 1251 break; 1252 case 's': 1253 mask = S_IFSOCK; 1254 break; 1255 #ifdef FTS_WHITEOUT 1256 case 'w': 1257 mask = S_IFWHT; 1258 ftsoptions |= FTS_WHITEOUT; 1259 break; 1260 #endif /* FTS_WHITEOUT */ 1261 default: 1262 errx(1, "-type: %s: unknown type", typestring); 1263 } 1264 1265 new = palloc(N_TYPE, f_type); 1266 new->m_data = mask; 1267 return (new); 1268 } 1269 1270 /* 1271 * -user uname functions -- 1272 * 1273 * True if the file belongs to the user uname. If uname is numeric and 1274 * an equivalent of the getpwnam() S9.2.2 [POSIX.1] function does not 1275 * return a valid user name, uname is taken as a user ID. 1276 */ 1277 int 1278 f_user(plan, entry) 1279 PLAN *plan; 1280 FTSENT *entry; 1281 { 1282 1283 return (entry->fts_statp->st_uid == plan->u_data); 1284 } 1285 1286 PLAN * 1287 c_user(argvp, isok) 1288 char ***argvp; 1289 int isok; 1290 { 1291 char *username = **argvp; 1292 PLAN *new; 1293 struct passwd *p; 1294 uid_t uid; 1295 1296 (*argvp)++; 1297 ftsoptions &= ~FTS_NOSTAT; 1298 1299 p = getpwnam(username); 1300 if (p == NULL) { 1301 uid = atoi(username); 1302 if (uid == 0 && username[0] != '0') 1303 errx(1, "-user: %s: no such user", username); 1304 } else 1305 uid = p->pw_uid; 1306 1307 new = palloc(N_USER, f_user); 1308 new->u_data = uid; 1309 return (new); 1310 } 1311 1312 /* 1313 * -xdev functions -- 1314 * 1315 * Always true, causes find not to decend past directories that have a 1316 * different device ID (st_dev, see stat() S5.6.2 [POSIX.1]) 1317 */ 1318 PLAN * 1319 c_xdev(argvp, isok) 1320 char ***argvp; 1321 int isok; 1322 { 1323 ftsoptions |= FTS_XDEV; 1324 1325 return (palloc(N_XDEV, f_always_true)); 1326 } 1327 1328 /* 1329 * ( expression ) functions -- 1330 * 1331 * True if expression is true. 1332 */ 1333 int 1334 f_expr(plan, entry) 1335 PLAN *plan; 1336 FTSENT *entry; 1337 { 1338 PLAN *p; 1339 int state; 1340 1341 state = 0; 1342 for (p = plan->p_data[0]; 1343 p && (state = (p->eval)(p, entry)); p = p->next); 1344 return (state); 1345 } 1346 1347 /* 1348 * N_OPENPAREN and N_CLOSEPAREN nodes are temporary place markers. They are 1349 * eliminated during phase 2 of find_formplan() --- the '(' node is converted 1350 * to a N_EXPR node containing the expression and the ')' node is discarded. 1351 */ 1352 PLAN * 1353 c_openparen(argvp, isok) 1354 char ***argvp; 1355 int isok; 1356 { 1357 1358 return (palloc(N_OPENPAREN, (int (*) __P((PLAN *, FTSENT *)))-1)); 1359 } 1360 1361 PLAN * 1362 c_closeparen(argvp, isok) 1363 char ***argvp; 1364 int isok; 1365 { 1366 1367 return (palloc(N_CLOSEPAREN, (int (*) __P((PLAN *, FTSENT *)))-1)); 1368 } 1369 1370 /* 1371 * ! expression functions -- 1372 * 1373 * Negation of a primary; the unary NOT operator. 1374 */ 1375 int 1376 f_not(plan, entry) 1377 PLAN *plan; 1378 FTSENT *entry; 1379 { 1380 PLAN *p; 1381 int state; 1382 1383 state = 0; 1384 for (p = plan->p_data[0]; 1385 p && (state = (p->eval)(p, entry)); p = p->next); 1386 return (!state); 1387 } 1388 1389 PLAN * 1390 c_not(argvp, isok) 1391 char ***argvp; 1392 int isok; 1393 { 1394 1395 return (palloc(N_NOT, f_not)); 1396 } 1397 1398 /* 1399 * expression -o expression functions -- 1400 * 1401 * Alternation of primaries; the OR operator. The second expression is 1402 * not evaluated if the first expression is true. 1403 */ 1404 int 1405 f_or(plan, entry) 1406 PLAN *plan; 1407 FTSENT *entry; 1408 { 1409 PLAN *p; 1410 int state; 1411 1412 state = 0; 1413 for (p = plan->p_data[0]; 1414 p && (state = (p->eval)(p, entry)); p = p->next); 1415 1416 if (state) 1417 return (1); 1418 1419 for (p = plan->p_data[1]; 1420 p && (state = (p->eval)(p, entry)); p = p->next); 1421 return (state); 1422 } 1423 1424 PLAN * 1425 c_or(argvp, isok) 1426 char ***argvp; 1427 int isok; 1428 { 1429 1430 return (palloc(N_OR, f_or)); 1431 } 1432 1433 PLAN * 1434 c_null(argvp, isok) 1435 char ***argvp; 1436 int isok; 1437 { 1438 1439 return (NULL); 1440 } 1441 1442 static PLAN * 1443 palloc(t, f) 1444 enum ntype t; 1445 int (*f) __P((PLAN *, FTSENT *)); 1446 { 1447 PLAN *new; 1448 1449 if ((new = malloc(sizeof(PLAN))) == NULL) 1450 err(1, NULL); 1451 new->type = t; 1452 new->eval = f; 1453 new->flags = 0; 1454 new->next = NULL; 1455 return (new); 1456 } 1457