mtree/spec.c

   1 /*-
   2  * Copyright (c) 1989, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #if 0
  31 #ifndef lint
  32 static char sccsid[] = "@(#)spec.c      8.1 (Berkeley) 6/6/93";
  33 #endif /* not lint */
  34 #endif
  35 #include <sys/cdefs.h>
  36 __FBSDID("$FreeBSD: src/usr.sbin/mtree/spec.c,v 1.22 2005/03/29 11:44:17 tobez Exp $");
  37
  38 #include <sys/types.h>
  39 #include <sys/stat.h>
  40 #include <ctype.h>
  41 #include <err.h>
  42 #include <errno.h>
  43 #include <fts.h>
  44 #include <grp.h>
  45 #include <pwd.h>
  46 #include <stdio.h>
  47 #include <stdint.h>
  48 #include <unistd.h>
  49 #include <vis.h>
  50 #include "metrics.h"
  51 #include "mtree.h"
  52 #include "extern.h"
  53
  54 int lineno;                             /* Current spec line number. */
  55
  56 static void      set(char *, NODE *);
  57 static void      unset(char *, NODE *);
  58
  59 NODE *
  60 mtree_readspec(FILE *fi)
  61 {
  62         NODE *centry, *last;
  63         char *p;
  64         NODE ginfo, *root;
  65         int c_cur, c_next;
  66         char buf[2048];
  67
  68         centry = last = root = NULL;
  69         bzero(&ginfo, sizeof(ginfo));
  70         c_cur = c_next = 0;
  71         for (lineno = 1; fgets(buf, sizeof(buf), fi);
  72             ++lineno, c_cur = c_next, c_next = 0) {
  73                 /* Skip empty lines. */
  74                 if (buf[0] == '\n')
  75                         continue;
  76
  77                 /* Find end of line. */
  78                 if ((p = index(buf, '\n')) == NULL) {
  79                         RECORD_FAILURE(21, ERANGE);
  80                         errx(1, "line %d too long", lineno);
  81                 }
  82
  83                 /* See if next line is continuation line. */
  84                 if (p[-1] == '\\') {
  85                         --p;
  86                         c_next = 1;
  87                 }
  88
  89                 /* Null-terminate the line. */
  90                 *p = '\0';
  91
  92                 /* Skip leading whitespace. */
  93                 for (p = buf; *p && isspace(*p); ++p);
  94
  95                 /* If nothing but whitespace or comment char, continue. */
  96                 if (!*p || *p == '#')
  97                         continue;
  98
  99 #ifdef DEBUG
 100                 (void)fprintf(stderr, "line %d: {%s}\n", lineno, p);
 101 #endif
 102                 if (c_cur) {
 103                         set(p, centry);
 104                         continue;
 105                 }
 106
 107                 /* Grab file name, "$", "set", or "unset". */
 108                 if ((p = strtok(p, "\n\t ")) == NULL) {
 109                         RECORD_FAILURE(22, EINVAL);
 110                         errx(1, "line %d: missing field", lineno);
 111                 }
 112
 113                 if (p[0] == '/')
 114                         switch(p[1]) {
 115                         case 's':
 116                                 if (strcmp(p + 1, "set"))
 117                                         break;
 118                                 set(NULL, &ginfo);
 119                                 continue;
 120                         case 'u':
 121                                 if (strcmp(p + 1, "unset"))
 122                                         break;
 123                                 unset(NULL, &ginfo);
 124                                 continue;
 125                         }
 126
 127                 if (index(p, '/')) {
 128                         RECORD_FAILURE(23, EINVAL);
 129                         errx(1, "line %d: slash character in file name",
 130                         lineno);
 131                 }
 132
 133                 if (!strcmp(p, "..")) {
 134                         /* Don't go up, if haven't gone down. */
 135                         if (!root)
 136                                 goto noparent;
 137                         if (last->type != F_DIR || last->flags & F_DONE) {
 138                                 if (last == root)
 139                                         goto noparent;
 140                                 last = last->parent;
 141                         }
 142                         last->flags |= F_DONE;
 143                         continue;
 144
 145 noparent:               RECORD_FAILURE(24, EINVAL);
 146                         errx(1, "line %d: no parent node", lineno);
 147                 }
 148
 149                 if ((centry = calloc(1, sizeof(NODE) + strlen(p))) == NULL) {
 150                         RECORD_FAILURE(25, ENOMEM);
 151                         errx(1, "calloc");
 152                 }
 153                 *centry = ginfo;
 154 #define MAGIC   "?*["
 155                 if (strpbrk(p, MAGIC))
 156                         centry->flags |= F_MAGIC;
 157                 if (strunvis(centry->name, p) == -1) {
 158                         RECORD_FAILURE(26, EILSEQ);
 159                         errx(1, "filename %s is ill-encoded", p);
 160                 }
 161                 set(NULL, centry);
 162
 163                 if (!root) {
 164                         last = root = centry;
 165                         root->parent = root;
 166                 } else if (last->type == F_DIR && !(last->flags & F_DONE)) {
 167                         centry->parent = last;
 168                         last = last->child = centry;
 169                 } else {
 170                         centry->parent = last->parent;
 171                         centry->prev = last;
 172                         last = last->next = centry;
 173                 }
 174         }
 175         return (root);
 176 }
 177
 178 static void
 179 set(char *t, NODE *ip)
 180 {
 181         int error = 0;
 182         int type;
 183         char *kw, *val = NULL;
 184         struct group *gr;
 185         struct passwd *pw;
 186         mode_t *m;
 187         int value;
 188         char *ep;
 189
 190         for (; (kw = strtok(t, "= \t\n")); t = NULL) {
 191                 ip->flags |= type = parsekey(kw, &value);
 192                 if ((value == 0) || (val = strtok(NULL, " \t\n")) == NULL) {
 193                         RECORD_FAILURE(27, EINVAL);
 194                         errx(1, "line %d: missing value", lineno);
 195                 }
 196                 switch(type) {
 197                         case F_CKSUM:
 198                                 ip->cksum = strtoul(val, &ep, 10);
 199                                 if (*ep) {
 200                                         RECORD_FAILURE(28, EINVAL);
 201                                         errx(1, "line %d: invalid checksum %s",
 202                                              lineno, val);
 203                                 }
 204                                 break;
 205                         case F_MD5:
 206                                 ip->md5digest = strdup(val);
 207                                 if (!ip->md5digest) {
 208                                         RECORD_FAILURE(29, ENOMEM);
 209                                         errx(1, "strdup");
 210                                 }
 211                                 break;
 212                         case F_SHA1:
 213                                 ip->sha1digest = strdup(val);
 214                                 if (!ip->sha1digest) {
 215                                         RECORD_FAILURE(30, ENOMEM);
 216                                         errx(1, "strdup");
 217                                 }
 218                                 break;
 219                         case F_SHA256:
 220                                 ip->sha256digest = strdup(val);
 221                                 if (!ip->sha256digest) {
 222                                         RECORD_FAILURE(31, ENOMEM);
 223                                         errx(1, "strdup");
 224                                 }
 225                                 break;
 226                         case F_RMD160:
 227                                 ip->rmd160digest = strdup(val);
 228                                 if (!ip->rmd160digest) {
 229                                         RECORD_FAILURE(32, ENOMEM);
 230                                         errx(1, "strdup");
 231                                 }
 232                                 break;
 233                         case F_FLAGS:
 234                                 if (strcmp("none", val) == 0) {
 235                                         ip->st_flags = 0;
 236                                 } else if (strtofflags(&val, &ip->st_flags, NULL) != 0) {
 237                                         RECORD_FAILURE(33, EINVAL);
 238                                         errx(1, "line %d: invalid flag %s",lineno, val);
 239                                 }
 240                                 break;
 241                         case F_GID:
 242                                 ip->st_gid = (gid_t)strtoul(val, &ep, 10);
 243                                 if (*ep) {
 244                                         RECORD_FAILURE(34, EINVAL);
 245                                         errx(1, "line %d: invalid gid %s", lineno, val);
 246                                 }
 247                                 break;
 248                         case F_GNAME:
 249                                 if ((gr = getgrnam(val)) == NULL) {
 250                                         RECORD_FAILURE(35, EINVAL);
 251                                         errx(1, "line %d: unknown group %s", lineno, val);
 252                                 }
 253                                 ip->st_gid = gr->gr_gid;
 254                                 break;
 255                         case F_IGN:
 256                                 /* just set flag bit */
 257                                 break;
 258                         case F_MODE:
 259                                 if ((m = setmode(val)) == NULL) {
 260                                         RECORD_FAILURE(36, EINVAL);
 261                                         errx(1, "line %d: invalid file mode %s",
 262                                              lineno, val);
 263                                 }
 264                                 ip->st_mode = getmode(m, 0);
 265                                 free(m);
 266                                 break;
 267                         case F_NLINK:
 268                                 ip->st_nlink = strtoul(val, &ep, 10);
 269                                 if (*ep) {
 270                                         RECORD_FAILURE(37, EINVAL);
 271                                         errx(1, "line %d: invalid link count %s",
 272                                              lineno,  val);
 273                                 }
 274                                 break;
 275                         case F_SIZE:
 276                                 ip->st_size = strtoq(val, &ep, 10);
 277                                 if (*ep) {
 278                                         RECORD_FAILURE(38, EINVAL);
 279                                         errx(1, "line %d: invalid size %s",
 280                                              lineno, val);
 281                                 }
 282                                 break;
 283                         case F_SLINK:
 284                                 ip->slink = malloc(strlen(val) + 1);
 285                                 if (ip->slink == NULL) {
 286                                         RECORD_FAILURE(39, ENOMEM);
 287                                         errx(1, "malloc");
 288                                 }
 289                                 if (strunvis(ip->slink, val) == -1) {
 290                                         RECORD_FAILURE(40, EILSEQ);
 291                                         errx(1, "symlink %s is ill-encoded", val);
 292                                 }
 293                                 break;
 294                         case F_TIME:
 295                                 ip->st_mtimespec.tv_sec = strtoul(val, &ep, 10);
 296                                 if (*ep != '.') {
 297                                         RECORD_FAILURE(41, EINVAL);
 298                                         errx(1, "line %d: invalid time %s",
 299                                              lineno, val);
 300                                 }
 301                                 val = ep + 1;
 302                                 ip->st_mtimespec.tv_nsec = strtoul(val, &ep, 10);
 303                                 if (*ep) {
 304                                         RECORD_FAILURE(42, EINVAL);
 305                                         errx(1, "line %d: invalid time %s",
 306                                              lineno, val);
 307                                 }
 308                                 break;
 309                         case F_TYPE:
 310                                 switch(*val) {
 311                                         case 'b':
 312                                                 if (!strcmp(val, "block"))
 313                                                         ip->type = F_BLOCK;
 314                                                 break;
 315                                         case 'c':
 316                                                 if (!strcmp(val, "char"))
 317                                                         ip->type = F_CHAR;
 318                                                 break;
 319                                         case 'd':
 320                                                 if (!strcmp(val, "dir"))
 321                                                         ip->type = F_DIR;
 322                                                 break;
 323                                         case 'f':
 324                                                 if (!strcmp(val, "file"))
 325                                                         ip->type = F_FILE;
 326                                                 if (!strcmp(val, "fifo"))
 327                                                         ip->type = F_FIFO;
 328                                                 break;
 329                                         case 'l':
 330                                                 if (!strcmp(val, "link"))
 331                                                         ip->type = F_LINK;
 332                                                 break;
 333                                         case 's':
 334                                                 if (!strcmp(val, "socket"))
 335                                                         ip->type = F_SOCK;
 336                                                 break;
 337                                         default:
 338                                                 RECORD_FAILURE(43, EINVAL);
 339                                                 errx(1, "line %d: unknown file type %s",
 340                                                      lineno, val);
 341                                 }
 342                                 break;
 343                         case F_UID:
 344                                 ip->st_uid = (uid_t)strtoul(val, &ep, 10);
 345                                 if (*ep) {
 346                                         RECORD_FAILURE(44, EINVAL);
 347                                         errx(1, "line %d: invalid uid %s", lineno, val);
 348                                 }
 349                                 break;
 350                         case F_UNAME:
 351                                 if ((pw = getpwnam(val)) == NULL) {
 352                                         RECORD_FAILURE(45, EINVAL);
 353                                         errx(1, "line %d: unknown user %s", lineno, val);
 354                                 }
 355                                 ip->st_uid = pw->pw_uid;
 356                                 break;
 357                         case F_BTIME:
 358                                 ip->st_birthtimespec.tv_sec = strtoul(val, &ep, 10);
 359                                 if (*ep != '.') {
 360                                         RECORD_FAILURE(46, EINVAL);
 361                                         errx(1, "line %d: invalid time %s",
 362                                              lineno, val);
 363                                 }
 364                                 val = ep + 1;
 365                                 ip->st_birthtimespec.tv_nsec = strtoul(val, &ep, 10);
 366                                 if (*ep) {
 367                                         RECORD_FAILURE(47, EINVAL);
 368                                         errx(1, "line %d: invalid time %s",
 369                                              lineno, val);
 370                                 }
 371                                 break;
 372                         case F_ATIME:
 373                                 ip->st_atimespec.tv_sec = strtoul(val, &ep, 10);
 374                                 if (*ep != '.') {
 375                                         RECORD_FAILURE(48, EINVAL);
 376                                         errx(1, "line %d: invalid time %s",
 377                                              lineno, val);
 378                                 }
 379                                 val = ep + 1;
 380                                 ip->st_atimespec.tv_nsec = strtoul(val, &ep, 10);
 381                                 if (*ep) {
 382                                         RECORD_FAILURE(49, EINVAL);
 383                                         errx(1, "line %d: invalid time %s",
 384                                              lineno, val);
 385                                 }
 386                                 break;
 387                         case F_CTIME:
 388                                 ip->st_ctimespec.tv_sec = strtoul(val, &ep, 10);
 389                                 if (*ep != '.') {
 390                                         RECORD_FAILURE(50, EINVAL);
 391                                         errx(1, "line %d: invalid time %s",
 392                                              lineno, val);
 393                                 }
 394                                 val = ep + 1;
 395                                 ip->st_ctimespec.tv_nsec = strtoul(val, &ep, 10);
 396                                 if (*ep) {
 397                                         RECORD_FAILURE(51, EINVAL);
 398                                         errx(1, "line %d: invalid time %s",
 399                                              lineno, val);
 400                                 }
 401                                 break;
 402                         case F_PTIME:
 403                                 ip->st_ptimespec.tv_sec = strtoul(val, &ep, 10);
 404                                 if (*ep != '.') {
 405                                         RECORD_FAILURE(52, EINVAL);
 406                                         errx(1, "line %d: invalid time %s",
 407                                              lineno, val);
 408                                 }
 409                                 val = ep + 1;
 410                                 ip->st_ptimespec.tv_nsec = strtoul(val, &ep, 10);
 411                                 if (*ep) {
 412                                         RECORD_FAILURE(53, EINVAL);
 413                                         errx(1, "line %d: invalid time %s",
 414                                              lineno, val);
 415                                 }
 416                                 break;
 417                         case F_XATTRS:
 418                                 ep = strtok(val,".");
 419                                 ip->xattrsdigest = strdup(ep);
 420                                 if (!ip->xattrsdigest) {
 421                                         error = errno;
 422                                         RECORD_FAILURE(54, error);
 423                                         errc(1, error, "strdup");
 424                                 }
 425                                 val = strtok(NULL,".");
 426                                 if (val) {
 427                                         ip->xdstream_priv_id = strtoull(val, &ep, 10);
 428                                         if (*ep) {
 429                                                 RECORD_FAILURE(55, EINVAL);
 430                                                 errx(1, "line %d: invalid private id %s",
 431                                                      lineno, val);
 432                                         }
 433                                 } else {
 434                                         ip->xdstream_priv_id = 0;
 435                                 }
 436                                 break;
 437                         case F_INODE:
 438                                 ip->st_ino = (ino_t)strtoull(val, &ep, 10);
 439                                 if (*ep) {
 440                                         RECORD_FAILURE(56, EINVAL);
 441                                         errx(1, "line %d: invalid inode %s",
 442                                              lineno, val);
 443                                 }
 444                                 break;
 445                         case F_ACL:
 446                                 ip->acldigest = strdup(val);
 447                                 if (!ip->acldigest) {
 448                                         error = errno;
 449                                         RECORD_FAILURE(57, error);
 450                                         errc(1, error, "strdup");
 451                                 }
 452                                 break;
 453                         case F_SIBLINGID:
 454                                 ip->sibling_id = (quad_t)strtoull(val, &ep, 10);
 455                                 if (*ep) {
 456                                         RECORD_FAILURE(58, EINVAL);
 457                                         errx(1, "line %d: invalid sibling id %s", lineno, val);
 458                                 }
 459                 }
 460         }
 461 }
 462
 463 static void
 464 unset(char *t, NODE *ip)
 465 {
 466         char *p;
 467
 468         while ((p = strtok(t, "\n\t ")))
 469                 ip->flags &= ~parsekey(p, NULL);
 470 }