1 /* $NetBSD: spec.c,v 1.88 2013/10/17 17:22:59 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 /*- 33 * Copyright (c) 2001-2004 The NetBSD Foundation, Inc. 34 * All rights reserved. 35 * 36 * This code is derived from software contributed to The NetBSD Foundation 37 * by Luke Mewburn of Wasabi Systems. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 49 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 50 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 51 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 52 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 53 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 54 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 55 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 56 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 57 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 58 * POSSIBILITY OF SUCH DAMAGE. 59 */ 60 61 #if HAVE_NBTOOL_CONFIG_H 62 #include "nbtool_config.h" 63 #endif 64 65 #include <sys/cdefs.h> 66 #if defined(__RCSID) && !defined(lint) 67 #if 0 68 static char sccsid[] = "@(#)spec.c 8.2 (Berkeley) 4/28/95"; 69 #else 70 __RCSID("$NetBSD: spec.c,v 1.88 2013/10/17 17:22:59 christos Exp $"); 71 #endif 72 #endif /* not lint */ 73 74 #include <sys/param.h> 75 #include <sys/stat.h> 76 77 #include <assert.h> 78 #include <ctype.h> 79 #include <errno.h> 80 #include <grp.h> 81 #include <pwd.h> 82 #include <stdarg.h> 83 #include <stdio.h> 84 #include <stdint.h> 85 #include <stdlib.h> 86 #include <string.h> 87 #include <unistd.h> 88 #include <vis.h> 89 #include <util.h> 90 91 #include "extern.h" 92 #include "pack_dev.h" 93 94 size_t mtree_lineno; /* Current spec line number */ 95 int mtree_Mflag; /* Merge duplicate entries */ 96 int mtree_Wflag; /* Don't "whack" permissions */ 97 int mtree_Sflag; /* Sort entries */ 98 99 static dev_t parsedev(char *); 100 static void replacenode(NODE *, NODE *); 101 static void set(char *, NODE *); 102 static void unset(char *, NODE *); 103 static void addchild(NODE *, NODE *); 104 static int nodecmp(const NODE *, const NODE *); 105 static int appendfield(int, const char *, ...) __printflike(2, 3); 106 107 #define REPLACEPTR(x,v) do { if ((x)) free((x)); (x) = (v); } while (0) 108 109 NODE * 110 spec(FILE *fp) 111 { 112 NODE *centry, *last, *pathparent, *cur; 113 char *p, *e, *next; 114 NODE ginfo, *root; 115 char *buf, *tname, *ntname; 116 size_t tnamelen, plen; 117 118 root = NULL; 119 centry = last = NULL; 120 tname = NULL; 121 tnamelen = 0; 122 memset(&ginfo, 0, sizeof(ginfo)); 123 for (mtree_lineno = 0; 124 (buf = fparseln(fp, NULL, &mtree_lineno, NULL, 125 FPARSELN_UNESCCOMM)); 126 free(buf)) { 127 /* Skip leading whitespace. */ 128 for (p = buf; *p && isspace((unsigned char)*p); ++p) 129 continue; 130 131 /* If nothing but whitespace, continue. */ 132 if (!*p) 133 continue; 134 135 #ifdef DEBUG 136 fprintf(stderr, "line %lu: {%s}\n", 137 (u_long)mtree_lineno, p); 138 #endif 139 /* Grab file name, "$", "set", or "unset". */ 140 next = buf; 141 while ((p = strsep(&next, " \t")) != NULL && *p == '\0') 142 continue; 143 if (p == NULL) 144 mtree_err("missing field"); 145 146 if (p[0] == '/') { 147 if (strcmp(p + 1, "set") == 0) 148 set(next, &ginfo); 149 else if (strcmp(p + 1, "unset") == 0) 150 unset(next, &ginfo); 151 else 152 mtree_err("invalid specification `%s'", p); 153 continue; 154 } 155 156 if (strcmp(p, "..") == 0) { 157 /* Don't go up, if haven't gone down. */ 158 if (root == NULL) 159 goto noparent; 160 if (last->type != F_DIR || last->flags & F_DONE) { 161 if (last == root) 162 goto noparent; 163 last = last->parent; 164 } 165 last->flags |= F_DONE; 166 continue; 167 168 noparent: mtree_err("no parent node"); 169 } 170 171 plen = strlen(p) + 1; 172 if (plen > tnamelen) { 173 if ((ntname = realloc(tname, plen)) == NULL) 174 mtree_err("realloc: %s", strerror(errno)); 175 tname = ntname; 176 tnamelen = plen; 177 } 178 if (strunvis(tname, p) == -1) 179 mtree_err("strunvis failed on `%s'", p); 180 p = tname; 181 182 pathparent = NULL; 183 if (strchr(p, '/') != NULL) { 184 cur = root; 185 for (; (e = strchr(p, '/')) != NULL; p = e+1) { 186 if (p == e) 187 continue; /* handle // */ 188 *e = '\0'; 189 if (strcmp(p, ".") != 0) { 190 while (cur && 191 strcmp(cur->name, p) != 0) { 192 cur = cur->next; 193 } 194 } 195 if (cur == NULL || cur->type != F_DIR) { 196 mtree_err("%s: %s", tname, 197 "missing directory in specification"); 198 } 199 *e = '/'; 200 pathparent = cur; 201 cur = cur->child; 202 } 203 if (*p == '\0') 204 mtree_err("%s: empty leaf element", tname); 205 } 206 207 if ((centry = calloc(1, sizeof(NODE) + strlen(p))) == NULL) 208 mtree_err("%s", strerror(errno)); 209 *centry = ginfo; 210 centry->lineno = mtree_lineno; 211 strcpy(centry->name, p); 212 #define MAGIC "?*[" 213 if (strpbrk(p, MAGIC)) 214 centry->flags |= F_MAGIC; 215 set(next, centry); 216 217 if (root == NULL) { 218 /* 219 * empty tree 220 */ 221 /* 222 * Allow a bare "." root node by forcing it to 223 * type=dir for compatibility with FreeBSD. 224 */ 225 if (strcmp(centry->name, ".") == 0 && centry->type == 0) 226 centry->type = F_DIR; 227 if (strcmp(centry->name, ".") != 0 || 228 centry->type != F_DIR) 229 mtree_err( 230 "root node must be the directory `.'"); 231 last = root = centry; 232 root->parent = root; 233 } else if (pathparent != NULL) { 234 /* 235 * full path entry; add or replace 236 */ 237 centry->parent = pathparent; 238 addchild(pathparent, centry); 239 last = centry; 240 } else if (strcmp(centry->name, ".") == 0) { 241 /* 242 * duplicate "." entry; always replace 243 */ 244 replacenode(root, centry); 245 } else if (last->type == F_DIR && !(last->flags & F_DONE)) { 246 /* 247 * new relative child in current dir; 248 * add or replace 249 */ 250 centry->parent = last; 251 addchild(last, centry); 252 last = centry; 253 } else { 254 /* 255 * new relative child in parent dir 256 * (after encountering ".." entry); 257 * add or replace 258 */ 259 centry->parent = last->parent; 260 addchild(last->parent, centry); 261 last = centry; 262 } 263 } 264 return (root); 265 } 266 267 void 268 free_nodes(NODE *root) 269 { 270 NODE *cur, *next; 271 272 if (root == NULL) 273 return; 274 275 next = NULL; 276 for (cur = root; cur != NULL; cur = next) { 277 next = cur->next; 278 free_nodes(cur->child); 279 REPLACEPTR(cur->slink, NULL); 280 REPLACEPTR(cur->md5digest, NULL); 281 REPLACEPTR(cur->rmd160digest, NULL); 282 REPLACEPTR(cur->sha1digest, NULL); 283 REPLACEPTR(cur->sha256digest, NULL); 284 REPLACEPTR(cur->sha384digest, NULL); 285 REPLACEPTR(cur->sha512digest, NULL); 286 REPLACEPTR(cur->tags, NULL); 287 REPLACEPTR(cur, NULL); 288 } 289 } 290 291 /* 292 * appendfield -- 293 * Like printf(), but output a space either before or after 294 * the regular output, according to the pathlast flag. 295 */ 296 static int 297 appendfield(int pathlast, const char *fmt, ...) 298 { 299 va_list ap; 300 int result; 301 302 va_start(ap, fmt); 303 if (!pathlast) 304 printf(" "); 305 result = vprintf(fmt, ap); 306 if (pathlast) 307 printf(" "); 308 va_end(ap); 309 return result; 310 } 311 312 /* 313 * dump_nodes -- 314 * dump the NODEs from `cur', based in the directory `dir'. 315 * if pathlast is none zero, print the path last, otherwise print 316 * it first. 317 */ 318 void 319 dump_nodes(const char *dir, NODE *root, int pathlast) 320 { 321 NODE *cur; 322 char path[MAXPATHLEN]; 323 const char *name; 324 char *str; 325 char *p, *q; 326 327 for (cur = root; cur != NULL; cur = cur->next) { 328 if (cur->type != F_DIR && !matchtags(cur)) 329 continue; 330 331 if (snprintf(path, sizeof(path), "%s%s%s", 332 dir, *dir ? "/" : "", cur->name) 333 >= (int)sizeof(path)) 334 mtree_err("Pathname too long."); 335 336 if (!pathlast) 337 printf("%s", vispath(path)); 338 339 #define MATCHFLAG(f) ((keys & (f)) && (cur->flags & (f))) 340 if (MATCHFLAG(F_TYPE)) 341 appendfield(pathlast, "type=%s", nodetype(cur->type)); 342 if (MATCHFLAG(F_UID | F_UNAME)) { 343 if (keys & F_UNAME && 344 (name = user_from_uid(cur->st_uid, 1)) != NULL) 345 appendfield(pathlast, "uname=%s", name); 346 else 347 appendfield(pathlast, "uid=%u", cur->st_uid); 348 } 349 if (MATCHFLAG(F_GID | F_GNAME)) { 350 if (keys & F_GNAME && 351 (name = group_from_gid(cur->st_gid, 1)) != NULL) 352 appendfield(pathlast, "gname=%s", name); 353 else 354 appendfield(pathlast, "gid=%u", cur->st_gid); 355 } 356 if (MATCHFLAG(F_MODE)) 357 appendfield(pathlast, "mode=%#o", cur->st_mode); 358 if (MATCHFLAG(F_DEV) && 359 (cur->type == F_BLOCK || cur->type == F_CHAR)) 360 appendfield(pathlast, "device=%#jx", 361 (uintmax_t)cur->st_rdev); 362 if (MATCHFLAG(F_NLINK)) 363 appendfield(pathlast, "nlink=%d", cur->st_nlink); 364 if (MATCHFLAG(F_SLINK)) 365 appendfield(pathlast, "link=%s", vispath(cur->slink)); 366 if (MATCHFLAG(F_SIZE)) 367 appendfield(pathlast, "size=%ju", 368 (uintmax_t)cur->st_size); 369 if (MATCHFLAG(F_TIME)) 370 appendfield(pathlast, "time=%jd.%09ld", 371 (intmax_t)cur->st_mtimespec.tv_sec, 372 cur->st_mtimespec.tv_nsec); 373 if (MATCHFLAG(F_CKSUM)) 374 appendfield(pathlast, "cksum=%lu", cur->cksum); 375 if (MATCHFLAG(F_MD5)) 376 appendfield(pathlast, "%s=%s", MD5KEY, cur->md5digest); 377 if (MATCHFLAG(F_RMD160)) 378 appendfield(pathlast, "%s=%s", RMD160KEY, 379 cur->rmd160digest); 380 if (MATCHFLAG(F_SHA1)) 381 appendfield(pathlast, "%s=%s", SHA1KEY, 382 cur->sha1digest); 383 if (MATCHFLAG(F_SHA256)) 384 appendfield(pathlast, "%s=%s", SHA256KEY, 385 cur->sha256digest); 386 if (MATCHFLAG(F_SHA384)) 387 appendfield(pathlast, "%s=%s", SHA384KEY, 388 cur->sha384digest); 389 if (MATCHFLAG(F_SHA512)) 390 appendfield(pathlast, "%s=%s", SHA512KEY, 391 cur->sha512digest); 392 if (MATCHFLAG(F_FLAGS)) { 393 str = flags_to_string(cur->st_flags, "none"); 394 appendfield(pathlast, "flags=%s", str); 395 free(str); 396 } 397 if (MATCHFLAG(F_IGN)) 398 appendfield(pathlast, "ignore"); 399 if (MATCHFLAG(F_OPT)) 400 appendfield(pathlast, "optional"); 401 if (MATCHFLAG(F_TAGS)) { 402 /* don't output leading or trailing commas */ 403 p = cur->tags; 404 while (*p == ',') 405 p++; 406 q = p + strlen(p); 407 while(q > p && q[-1] == ',') 408 q--; 409 appendfield(pathlast, "tags=%.*s", (int)(q - p), p); 410 } 411 puts(pathlast ? vispath(path) : ""); 412 413 if (cur->child) 414 dump_nodes(path, cur->child, pathlast); 415 } 416 } 417 418 /* 419 * vispath -- 420 * strsvis(3) encodes path, which must not be longer than MAXPATHLEN 421 * characters long, and returns a pointer to a static buffer containing 422 * the result. 423 */ 424 char * 425 vispath(const char *path) 426 { 427 static const char extra[] = { ' ', '\t', '\n', '\\', '#', '\0' }; 428 static const char extra_glob[] = { ' ', '\t', '\n', '\\', '#', '*', 429 '?', '[', '\0' }; 430 static char pathbuf[4*MAXPATHLEN + 1]; 431 432 if (flavor == F_NETBSD6) 433 strsvis(pathbuf, path, VIS_CSTYLE, extra); 434 else 435 strsvis(pathbuf, path, VIS_OCTAL, extra_glob); 436 return pathbuf; 437 } 438 439 440 static dev_t 441 parsedev(char *arg) 442 { 443 #define MAX_PACK_ARGS 3 444 u_long numbers[MAX_PACK_ARGS]; 445 char *p, *ep, *dev; 446 int argc; 447 pack_t *pack; 448 dev_t result; 449 const char *error = NULL; 450 451 if ((dev = strchr(arg, ',')) != NULL) { 452 *dev++='\0'; 453 if ((pack = pack_find(arg)) == NULL) 454 mtree_err("unknown format `%s'", arg); 455 argc = 0; 456 while ((p = strsep(&dev, ",")) != NULL) { 457 if (*p == '\0') 458 mtree_err("missing number"); 459 numbers[argc++] = strtoul(p, &ep, 0); 460 if (*ep != '\0') 461 mtree_err("invalid number `%s'", 462 p); 463 /* MINIX: 03 warns for above array bounds*/ 464 if (argc >= MAX_PACK_ARGS) 465 mtree_err("too many arguments"); 466 } 467 if (argc < 2) 468 mtree_err("not enough arguments"); 469 result = (*pack)(argc, numbers, &error); 470 if (error != NULL) 471 mtree_err("%s", error); 472 } else { 473 result = (dev_t)strtoul(arg, &ep, 0); 474 if (*ep != '\0') 475 mtree_err("invalid device `%s'", arg); 476 } 477 return (result); 478 } 479 480 static void 481 replacenode(NODE *cur, NODE *new) 482 { 483 484 #define REPLACE(x) cur->x = new->x 485 #define REPLACESTR(x) REPLACEPTR(cur->x,new->x) 486 487 if (cur->type != new->type) { 488 if (mtree_Mflag) { 489 /* 490 * merge entries with different types; we 491 * don't want children retained in this case. 492 */ 493 REPLACE(type); 494 free_nodes(cur->child); 495 cur->child = NULL; 496 } else { 497 mtree_err( 498 "existing entry for `%s', type `%s'" 499 " does not match type `%s'", 500 cur->name, nodetype(cur->type), 501 nodetype(new->type)); 502 } 503 } 504 505 REPLACE(st_size); 506 REPLACE(st_mtimespec); 507 REPLACESTR(slink); 508 if (cur->slink != NULL) { 509 if ((cur->slink = strdup(new->slink)) == NULL) 510 mtree_err("memory allocation error"); 511 if (strunvis(cur->slink, new->slink) == -1) 512 mtree_err("strunvis failed on `%s'", new->slink); 513 free(new->slink); 514 } 515 REPLACE(st_uid); 516 REPLACE(st_gid); 517 REPLACE(st_mode); 518 REPLACE(st_rdev); 519 REPLACE(st_flags); 520 REPLACE(st_nlink); 521 REPLACE(cksum); 522 REPLACESTR(md5digest); 523 REPLACESTR(rmd160digest); 524 REPLACESTR(sha1digest); 525 REPLACESTR(sha256digest); 526 REPLACESTR(sha384digest); 527 REPLACESTR(sha512digest); 528 REPLACESTR(tags); 529 REPLACE(lineno); 530 REPLACE(flags); 531 free(new); 532 } 533 534 static void 535 set(char *t, NODE *ip) 536 { 537 int type, value, len; 538 gid_t gid; 539 uid_t uid; 540 char *kw, *val, *md, *ep; 541 void *m; 542 543 while ((kw = strsep(&t, "= \t")) != NULL) { 544 if (*kw == '\0') 545 continue; 546 if (strcmp(kw, "all") == 0) 547 mtree_err("invalid keyword `all'"); 548 ip->flags |= type = parsekey(kw, &value); 549 if (!value) 550 /* Just set flag bit (F_IGN and F_OPT) */ 551 continue; 552 while ((val = strsep(&t, " \t")) != NULL && *val == '\0') 553 continue; 554 if (val == NULL) 555 mtree_err("missing value"); 556 switch (type) { 557 case F_CKSUM: 558 ip->cksum = strtoul(val, &ep, 10); 559 if (*ep) 560 mtree_err("invalid checksum `%s'", val); 561 break; 562 case F_DEV: 563 ip->st_rdev = parsedev(val); 564 break; 565 case F_FLAGS: 566 if (strcmp("none", val) == 0) 567 ip->st_flags = 0; 568 else if (string_to_flags(&val, &ip->st_flags, NULL) 569 != 0) 570 mtree_err("invalid flag `%s'", val); 571 break; 572 case F_GID: 573 ip->st_gid = (gid_t)strtoul(val, &ep, 10); 574 if (*ep) 575 mtree_err("invalid gid `%s'", val); 576 break; 577 case F_GNAME: 578 if (mtree_Wflag) /* don't parse if whacking */ 579 break; 580 if (gid_from_group(val, &gid) == -1) 581 mtree_err("unknown group `%s'", val); 582 ip->st_gid = gid; 583 break; 584 case F_MD5: 585 if (val[0]=='0' && val[1]=='x') 586 md=&val[2]; 587 else 588 md=val; 589 if ((ip->md5digest = strdup(md)) == NULL) 590 mtree_err("memory allocation error"); 591 break; 592 case F_MODE: 593 if ((m = setmode(val)) == NULL) 594 mtree_err("cannot set file mode `%s' (%s)", 595 val, strerror(errno)); 596 ip->st_mode = getmode(m, 0); 597 free(m); 598 break; 599 case F_NLINK: 600 ip->st_nlink = (nlink_t)strtoul(val, &ep, 10); 601 if (*ep) 602 mtree_err("invalid link count `%s'", val); 603 break; 604 case F_RMD160: 605 if (val[0]=='0' && val[1]=='x') 606 md=&val[2]; 607 else 608 md=val; 609 if ((ip->rmd160digest = strdup(md)) == NULL) 610 mtree_err("memory allocation error"); 611 break; 612 case F_SHA1: 613 if (val[0]=='0' && val[1]=='x') 614 md=&val[2]; 615 else 616 md=val; 617 if ((ip->sha1digest = strdup(md)) == NULL) 618 mtree_err("memory allocation error"); 619 break; 620 case F_SIZE: 621 ip->st_size = (off_t)strtoll(val, &ep, 10); 622 if (*ep) 623 mtree_err("invalid size `%s'", val); 624 break; 625 case F_SLINK: 626 if ((ip->slink = strdup(val)) == NULL) 627 mtree_err("memory allocation error"); 628 if (strunvis(ip->slink, val) == -1) 629 mtree_err("strunvis failed on `%s'", val); 630 break; 631 case F_TAGS: 632 len = strlen(val) + 3; /* "," + str + ",\0" */ 633 if ((ip->tags = malloc(len)) == NULL) 634 mtree_err("memory allocation error"); 635 snprintf(ip->tags, len, ",%s,", val); 636 break; 637 case F_TIME: 638 ip->st_mtimespec.tv_sec = 639 (time_t)strtoll(val, &ep, 10); 640 if (*ep != '.') 641 mtree_err("invalid time `%s'", val); 642 val = ep + 1; 643 ip->st_mtimespec.tv_nsec = strtol(val, &ep, 10); 644 if (*ep) 645 mtree_err("invalid time `%s'", val); 646 break; 647 case F_TYPE: 648 ip->type = parsetype(val); 649 break; 650 case F_UID: 651 ip->st_uid = (uid_t)strtoul(val, &ep, 10); 652 if (*ep) 653 mtree_err("invalid uid `%s'", val); 654 break; 655 case F_UNAME: 656 if (mtree_Wflag) /* don't parse if whacking */ 657 break; 658 if (uid_from_user(val, &uid) == -1) 659 mtree_err("unknown user `%s'", val); 660 ip->st_uid = uid; 661 break; 662 case F_SHA256: 663 if (val[0]=='0' && val[1]=='x') 664 md=&val[2]; 665 else 666 md=val; 667 if ((ip->sha256digest = strdup(md)) == NULL) 668 mtree_err("memory allocation error"); 669 break; 670 case F_SHA384: 671 if (val[0]=='0' && val[1]=='x') 672 md=&val[2]; 673 else 674 md=val; 675 if ((ip->sha384digest = strdup(md)) == NULL) 676 mtree_err("memory allocation error"); 677 break; 678 case F_SHA512: 679 if (val[0]=='0' && val[1]=='x') 680 md=&val[2]; 681 else 682 md=val; 683 if ((ip->sha512digest = strdup(md)) == NULL) 684 mtree_err("memory allocation error"); 685 break; 686 default: 687 mtree_err( 688 "set(): unsupported key type 0x%x (INTERNAL ERROR)", 689 type); 690 /* NOTREACHED */ 691 } 692 } 693 } 694 695 static void 696 unset(char *t, NODE *ip) 697 { 698 char *p; 699 700 while ((p = strsep(&t, " \t")) != NULL) { 701 if (*p == '\0') 702 continue; 703 ip->flags &= ~parsekey(p, NULL); 704 } 705 } 706 707 /* 708 * addchild -- 709 * Add the centry node as a child of the pathparent node. If 710 * centry is a duplicate, call replacenode(). If centry is not 711 * a duplicate, insert it into the linked list referenced by 712 * pathparent->child. Keep the list sorted if Sflag is set. 713 */ 714 static void 715 addchild(NODE *pathparent, NODE *centry) 716 { 717 NODE *samename; /* node with the same name as centry */ 718 NODE *replacepos; /* if non-NULL, centry should replace this node */ 719 NODE *insertpos; /* if non-NULL, centry should be inserted 720 * after this node */ 721 NODE *cur; /* for stepping through the list */ 722 NODE *last; /* the last node in the list */ 723 int cmp; 724 725 samename = NULL; 726 replacepos = NULL; 727 insertpos = NULL; 728 last = NULL; 729 cur = pathparent->child; 730 if (cur == NULL) { 731 /* centry is pathparent's first and only child node so far */ 732 pathparent->child = centry; 733 return; 734 } 735 736 /* 737 * pathparent already has at least one other child, so add the 738 * centry node to the list. 739 * 740 * We first scan through the list looking for an existing node 741 * with the same name (setting samename), and also looking 742 * for the correct position to replace or insert the new node 743 * (setting replacepos and/or insertpos). 744 */ 745 for (; cur != NULL; last = cur, cur = cur->next) { 746 if (strcmp(centry->name, cur->name) == 0) { 747 samename = cur; 748 } 749 if (mtree_Sflag) { 750 cmp = nodecmp(centry, cur); 751 if (cmp == 0) { 752 replacepos = cur; 753 } else if (cmp > 0) { 754 insertpos = cur; 755 } 756 } 757 } 758 if (! mtree_Sflag) { 759 if (samename != NULL) { 760 /* replace node with same name */ 761 replacepos = samename; 762 } else { 763 /* add new node at end of list */ 764 insertpos = last; 765 } 766 } 767 768 if (samename != NULL) { 769 /* 770 * We found a node with the same name above. Call 771 * replacenode(), which will either exit with an error, 772 * or replace the information in the samename node and 773 * free the information in the centry node. 774 */ 775 replacenode(samename, centry); 776 if (samename == replacepos) { 777 /* The just-replaced node was in the correct position */ 778 return; 779 } 780 if (samename == insertpos || samename->prev == insertpos) { 781 /* 782 * We thought the new node should be just before 783 * or just after the replaced node, but that would 784 * be equivalent to just retaining the replaced node. 785 */ 786 return; 787 } 788 789 /* 790 * The just-replaced node is in the wrong position in 791 * the list. This can happen if sort order depends on 792 * criteria other than the node name. 793 * 794 * Make centry point to the just-replaced node. Unlink 795 * the just-replaced node from the list, and allow it to 796 * be insterted in the correct position later. 797 */ 798 centry = samename; 799 if (centry->prev) 800 centry->prev->next = centry->next; 801 else { 802 /* centry->next is the new head of the list */ 803 pathparent->child = centry->next; 804 assert(centry->next != NULL); 805 } 806 if (centry->next) 807 centry->next->prev = centry->prev; 808 centry->prev = NULL; 809 centry->next = NULL; 810 } 811 812 if (insertpos == NULL) { 813 /* insert centry at the beginning of the list */ 814 pathparent->child->prev = centry; 815 centry->next = pathparent->child; 816 centry->prev = NULL; 817 pathparent->child = centry; 818 } else { 819 /* insert centry into the list just after insertpos */ 820 centry->next = insertpos->next; 821 insertpos->next = centry; 822 centry->prev = insertpos; 823 if (centry->next) 824 centry->next->prev = centry; 825 } 826 return; 827 } 828 829 /* 830 * nodecmp -- 831 * used as a comparison function by addchild() to control the order 832 * in which entries appear within a list of sibling nodes. We make 833 * directories sort after non-directories, but otherwise sort in 834 * strcmp() order. 835 * 836 * Keep this in sync with dcmp() in create.c. 837 */ 838 static int 839 nodecmp(const NODE *a, const NODE *b) 840 { 841 842 if ((a->type & F_DIR) != 0) { 843 if ((b->type & F_DIR) == 0) 844 return 1; 845 } else if ((b->type & F_DIR) != 0) 846 return -1; 847 return strcmp(a->name, b->name); 848 } 849