usr.sbin/mtree/create.c

   1 /*      @(#)create.c    8.1 (Berkeley) 6/6/93   */
   2 /*      $NetBSD: create.c,v 1.76 2018/11/18 23:03:36 sevan Exp $        */
   3
   4 /*-
   5  * Copyright (c) 1989, 1993
   6  *      The Regents of the University of California.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the name of the University nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 #if HAVE_NBTOOL_CONFIG_H
  34 #include "nbtool_config.h"
  35 #endif
  36
  37 #include <sys/param.h>
  38 #include <sys/stat.h>
  39
  40 #if ! HAVE_NBTOOL_CONFIG_H
  41 #include <dirent.h>
  42 #endif
  43
  44 #include <errno.h>
  45 #include <fcntl.h>
  46 #include <grp.h>
  47 #include <pwd.h>
  48 #include <stdio.h>
  49 #include <stdarg.h>
  50 #include <stdint.h>
  51 #include <stdlib.h>
  52 #include <string.h>
  53 #include <time.h>
  54 #include <unistd.h>
  55
  56 #ifndef NO_MD5
  57 #include <md5.h>
  58 #endif
  59 #ifndef NO_RMD160
  60 #include <ripemd.h>
  61 #include <rmd160.h>
  62 #endif
  63 #ifndef NO_SHA1
  64 #include <sha.h>
  65 #include <sha1hl.h>
  66 #endif
  67 #ifndef NO_SHA2
  68 #include <sha256.h>
  69 #include <sha512.h>
  70 #endif
  71
  72 #include "extern.h"
  73
  74 #define INDENTNAMELEN   15
  75 #define MAXLINELEN      80
  76
  77 static gid_t gid;
  78 static uid_t uid;
  79 static mode_t mode;
  80 static u_long flags;
  81
  82 #if defined(__FreeBSD__) || defined(__DragonFly__)
  83 #define FTS_CONST const
  84 #else
  85 #define FTS_CONST
  86 #endif
  87
  88 static int      dcmp(const FTSENT *FTS_CONST *, const FTSENT *FTS_CONST *);
  89 static void     output(FILE *, int, int *, const char *, ...)
  90     __printflike(4, 5);
  91 static int      statd(FILE *, FTS *, FTSENT *, uid_t *, gid_t *, mode_t *,
  92     u_long *);
  93 static void     statf(FILE *, int, FTSENT *);
  94
  95 void
  96 cwalk(FILE *fp)
  97 {
  98         FTS *t;
  99         FTSENT *p;
 100         time_t clocktime;
 101         char host[MAXHOSTNAMELEN + 1];
 102         const char *user;
 103         char *argv[2];
 104         char  dot[] = ".";
 105         int indent = 0;
 106
 107         argv[0] = dot;
 108         argv[1] = NULL;
 109
 110         time(&clocktime);
 111         gethostname(host, sizeof(host));
 112         host[sizeof(host) - 1] = '\0';
 113         if ((user = getlogin()) == NULL) {
 114                 struct passwd *pw;
 115                 user = (pw = getpwuid(getuid())) != NULL ? pw->pw_name :
 116                     "<unknown>";
 117         }
 118
 119         if (!nflag)
 120                 fprintf(fp,
 121                     "#\t   user: %s\n#\tmachine: %s\n#\t   tree: %s\n"
 122                     "#\t   date: %s",
 123                     user, host, fullpath, ctime(&clocktime));
 124
 125         if ((t = fts_open(argv, ftsoptions, dcmp)) == NULL)
 126                 mtree_err("fts_open: %s", strerror(errno));
 127         while ((p = fts_read(t)) != NULL) {
 128                 if (jflag)
 129                         indent = p->fts_level * 4;
 130                 if (check_excludes(p->fts_name, p->fts_path)) {
 131                         fts_set(t, p, FTS_SKIP);
 132                         continue;
 133                 }
 134                 if (!find_only(p->fts_path)) {
 135                         fts_set(t, p, FTS_SKIP);
 136                         continue;
 137                 }
 138                 switch(p->fts_info) {
 139                 case FTS_D:
 140                         if (!bflag)
 141                                 fprintf(fp, "\n");
 142                         if (!nflag)
 143                                 fprintf(fp, "# %s\n", p->fts_path);
 144                         statd(fp, t, p, &uid, &gid, &mode, &flags);
 145                         statf(fp, indent, p);
 146                         break;
 147                 case FTS_DP:
 148                         if (p->fts_level > 0)
 149                                 if (!nflag)
 150                                         fprintf(fp, "%*s# %s\n", indent, "",
 151                                             p->fts_path);
 152                         if (p->fts_level > 0 || flavor == F_FREEBSD9) {
 153                                 fprintf(fp, "%*s..\n", indent, "");
 154                                 if (!bflag)
 155                                         fprintf(fp, "\n");
 156                         }
 157                         break;
 158                 case FTS_DNR:
 159                 case FTS_ERR:
 160                 case FTS_NS:
 161                         mtree_err("%s: %s",
 162                             p->fts_path, strerror(p->fts_errno));
 163                         break;
 164                 default:
 165                         if (!dflag)
 166                                 statf(fp, indent, p);
 167                         break;
 168
 169                 }
 170         }
 171         fts_close(t);
 172         if (sflag && keys & F_CKSUM)
 173                 mtree_err("%s checksum: %u", fullpath, crc_total);
 174 }
 175
 176 static void
 177 dosum(FILE *fp, int indent, FTSENT *p, int *offset, int flag,
 178     char * (*func)(const char *, char *), const char *key)
 179 {
 180         char *digestbuf;
 181
 182         if ((keys & flag) == 0)
 183                 return;
 184
 185         digestbuf = (*func)(p->fts_accpath, NULL);
 186         if (digestbuf != NULL) {
 187                 output(fp, indent, offset, "%s=%s", key, digestbuf);
 188                 free(digestbuf);
 189                 return;
 190         }
 191
 192         if (qflag) {
 193                 warn("%s: %s failed", p->fts_path, key);
 194                 return;
 195         }
 196
 197         mtree_err("%s: %s failed: %s", p->fts_path, key, strerror(errno));
 198 }
 199
 200 static char *
 201 crcFile(const char *fname, char *dummy __unused)
 202 {
 203         char *ptr;
 204         uint32_t val, len;
 205         int fd, e;
 206
 207         if ((fd = open(fname, O_RDONLY)) == -1)
 208                 goto out;
 209
 210         e = crc(fd, &val, &len);
 211         close(fd);
 212         if (e)
 213                 goto out;
 214
 215         if (asprintf(&ptr, "%u", val) < 0)
 216                 goto out;
 217
 218         return ptr;
 219 out:
 220         mtree_err("%s: %s", fname, strerror(errno));
 221         return NULL;
 222 }
 223
 224 static void
 225 statf(FILE *fp, int indent, FTSENT *p)
 226 {
 227         int offset;
 228         const char *name = NULL;
 229
 230         offset = fprintf(fp, "%*s%s%s", indent, "",
 231             S_ISDIR(p->fts_statp->st_mode) ? "" : "    ", vispath(p->fts_name));
 232
 233         if (offset > (INDENTNAMELEN + indent))
 234                 offset = MAXLINELEN;
 235         else
 236                 offset += fprintf(fp, "%*s",
 237                     (INDENTNAMELEN + indent) - offset, "");
 238
 239         if (!S_ISREG(p->fts_statp->st_mode) && (flavor == F_NETBSD6 || !dflag))
 240                 output(fp, indent, &offset, "type=%s",
 241                     inotype(p->fts_statp->st_mode));
 242         if (keys & (F_UID | F_UNAME) && p->fts_statp->st_uid != uid) {
 243                 if (keys & F_UNAME &&
 244                     (name = user_from_uid(p->fts_statp->st_uid, 1)) != NULL)
 245                         output(fp, indent, &offset, "uname=%s", name);
 246                 if (keys & F_UID || (keys & F_UNAME && name == NULL))
 247                         output(fp, indent, &offset, "uid=%u",
 248                             p->fts_statp->st_uid);
 249         }
 250         if (keys & (F_GID | F_GNAME) && p->fts_statp->st_gid != gid) {
 251                 if (keys & F_GNAME &&
 252                     (name = group_from_gid(p->fts_statp->st_gid, 1)) != NULL)
 253                         output(fp, indent, &offset, "gname=%s", name);
 254                 if (keys & F_GID || (keys & F_GNAME && name == NULL))
 255                         output(fp, indent, &offset, "gid=%u",
 256                             p->fts_statp->st_gid);
 257         }
 258         if (keys & F_MODE && (p->fts_statp->st_mode & MBITS) != mode)
 259                 output(fp, indent, &offset, "mode=%#o",
 260                     p->fts_statp->st_mode & MBITS);
 261         if (keys & F_DEV &&
 262             (S_ISBLK(p->fts_statp->st_mode) || S_ISCHR(p->fts_statp->st_mode)))
 263                 output(fp, indent, &offset, "device=%#jx",
 264                     (uintmax_t)p->fts_statp->st_rdev);
 265         if (keys & F_NLINK && p->fts_statp->st_nlink != 1)
 266                 output(fp, indent, &offset, "nlink=%ju",
 267                     (uintmax_t)p->fts_statp->st_nlink);
 268         if (keys & F_SIZE &&
 269             (flavor == F_FREEBSD9 || S_ISREG(p->fts_statp->st_mode)))
 270                 output(fp, indent, &offset, "size=%ju",
 271                     (uintmax_t)p->fts_statp->st_size);
 272         if (keys & F_TIME)
 273 #if defined(BSD4_4) && !defined(HAVE_NBTOOL_CONFIG_H)
 274                 output(fp, indent, &offset, "time=%jd.%09ld",
 275                     (intmax_t)p->fts_statp->st_mtimespec.tv_sec,
 276                     p->fts_statp->st_mtimespec.tv_nsec);
 277 #else
 278                 output(fp, indent, &offset, "time=%jd.%09ld",
 279                     (intmax_t)p->fts_statp->st_mtime, (long)0);
 280 #endif
 281         if (S_ISREG(p->fts_statp->st_mode))  {
 282                 dosum(fp, indent, p, &offset, F_CKSUM, crcFile, "cksum");
 283 #ifndef NO_MD5
 284                 dosum(fp, indent, p, &offset, F_MD5, MD5File, MD5KEY);
 285 #endif  /* ! NO_MD5 */
 286 #ifndef NO_RMD160
 287                 dosum(fp, indent, p, &offset, F_RMD160, RIPEMD160_File, RMD160KEY);
 288 #endif  /* ! NO_RMD160 */
 289 #ifndef NO_SHA1
 290                 dosum(fp, indent, p, &offset, F_SHA1, SHA1_File, SHA1KEY);
 291 #endif  /* ! NO_SHA1 */
 292 #ifndef NO_SHA2
 293                 dosum(fp, indent, p, &offset, F_SHA256, SHA256_File, SHA256KEY);
 294 #ifdef SHA384_BLOCK_LENGTH
 295 #if !defined(__DragonFly__)
 296                 dosum(fp, indent, p, &offset, F_SHA384, SHA384_File, SHA384KEY);
 297 #endif
 298 #endif
 299                 dosum(fp, indent, p, &offset, F_SHA512, SHA512_File, SHA512KEY);
 300 #endif  /* ! NO_SHA2 */
 301         }
 302         if (keys & F_SLINK &&
 303             (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE))
 304                 output(fp, indent, &offset, "link=%s",
 305                     vispath(rlink(p->fts_accpath)));
 306 #if HAVE_STRUCT_STAT_ST_FLAGS
 307         if (keys & F_FLAGS && p->fts_statp->st_flags != flags) {
 308                 char *str = flags_to_string(p->fts_statp->st_flags, "none");
 309                 output(fp, indent, &offset, "flags=%s", str);
 310                 free(str);
 311         }
 312 #endif
 313         putchar('\n');
 314 }
 315
 316 /* XXX
 317  * FLAGS2INDEX will fail once the user and system settable bits need more
 318  * than one byte, respectively.
 319  */
 320 #define FLAGS2INDEX(x)  (((x >> 8) & 0x0000ff00) | (x & 0x000000ff))
 321
 322 #define MTREE_MAXGID    5000
 323 #define MTREE_MAXUID    5000
 324 #define MTREE_MAXMODE   (MBITS + 1)
 325 #if HAVE_STRUCT_STAT_ST_FLAGS
 326 #define MTREE_MAXFLAGS  (FLAGS2INDEX(CH_MASK) + 1)   /* 1808 */
 327 #else
 328 #define MTREE_MAXFLAGS  1
 329 #endif
 330 #define MTREE_MAXS 16
 331
 332 static int
 333 statd(FILE *fp, FTS *t, FTSENT *parent, uid_t *puid, gid_t *pgid, mode_t *pmode,
 334     u_long *pflags)
 335 {
 336         FTSENT *p;
 337         gid_t sgid;
 338         uid_t suid;
 339         mode_t smode;
 340         u_long sflags = 0;
 341         const char *name = NULL;
 342         gid_t savegid;
 343         uid_t saveuid;
 344         mode_t savemode;
 345         u_long saveflags;
 346         u_short maxgid, maxuid, maxmode, maxflags;
 347         u_short g[MTREE_MAXGID], u[MTREE_MAXUID],
 348                 m[MTREE_MAXMODE], f[MTREE_MAXFLAGS];
 349         static int first = 1;
 350
 351         savegid = *pgid;
 352         saveuid = *puid;
 353         savemode = *pmode;
 354         saveflags = *pflags;
 355         if ((p = fts_children(t, 0)) == NULL) {
 356                 if (errno)
 357                         mtree_err("%s: %s", RP(parent), strerror(errno));
 358                 return (1);
 359         }
 360
 361         memset(g, 0, sizeof(g));
 362         memset(u, 0, sizeof(u));
 363         memset(m, 0, sizeof(m));
 364         memset(f, 0, sizeof(f));
 365
 366         maxuid = maxgid = maxmode = maxflags = 0;
 367         for (; p; p = p->fts_link) {
 368                 if (flavor == F_NETBSD6 || !dflag ||
 369                     (dflag && S_ISDIR(p->fts_statp->st_mode))) {
 370                         smode = p->fts_statp->st_mode & MBITS;
 371                         if (smode < MTREE_MAXMODE && ++m[smode] > maxmode) {
 372                                 savemode = smode;
 373                                 maxmode = m[smode];
 374                         }
 375                         sgid = p->fts_statp->st_gid;
 376                         if (sgid < MTREE_MAXGID && ++g[sgid] > maxgid) {
 377                                 savegid = sgid;
 378                                 maxgid = g[sgid];
 379                         }
 380                         suid = p->fts_statp->st_uid;
 381                         if (suid < MTREE_MAXUID && ++u[suid] > maxuid) {
 382                                 saveuid = suid;
 383                                 maxuid = u[suid];
 384                         }
 385
 386 #if HAVE_STRUCT_STAT_ST_FLAGS
 387                         sflags = FLAGS2INDEX(p->fts_statp->st_flags);
 388                         if (sflags < MTREE_MAXFLAGS && ++f[sflags] > maxflags) {
 389                                 saveflags = p->fts_statp->st_flags;
 390                                 maxflags = f[sflags];
 391                         }
 392 #endif
 393                 }
 394         }
 395         /*
 396          * If the /set record is the same as the last one we do not need to
 397          * output a new one.  So first we check to see if anything changed.
 398          * Note that we always output a /set record for the first directory.
 399          */
 400         if (((keys & (F_UNAME | F_UID)) && (*puid != saveuid)) ||
 401             ((keys & (F_GNAME | F_GID)) && (*pgid != savegid)) ||
 402             ((keys & F_MODE) && (*pmode != savemode)) ||
 403             ((keys & F_FLAGS) && (*pflags != saveflags)) ||
 404             first) {
 405                 first = 0;
 406                 if (flavor != F_NETBSD6 && dflag)
 407                         fprintf(fp, "/set type=dir");
 408                 else
 409                         fprintf(fp, "/set type=file");
 410                 if (keys & (F_UID | F_UNAME)) {
 411                         if (keys & F_UNAME &&
 412                             (name = user_from_uid(saveuid, 1)) != NULL)
 413                                 fprintf(fp, " uname=%s", name);
 414                         if (keys & F_UID || (keys & F_UNAME && name == NULL))
 415                                 fprintf(fp, " uid=%lu", (u_long)saveuid);
 416                 }
 417                 if (keys & (F_GID | F_GNAME)) {
 418                         if (keys & F_GNAME &&
 419                             (name = group_from_gid(savegid, 1)) != NULL)
 420                                 fprintf(fp, " gname=%s", name);
 421                         if (keys & F_GID || (keys & F_GNAME && name == NULL))
 422                                 fprintf(fp, " gid=%lu", (u_long)savegid);
 423                 }
 424                 if (keys & F_MODE)
 425                         fprintf(fp, " mode=%#lo", (u_long)savemode);
 426                 if (keys & F_NLINK)
 427                         fprintf(fp, " nlink=1");
 428                 if (keys & F_FLAGS) {
 429                         char *str = flags_to_string(saveflags, "none");
 430                         fprintf(fp, " flags=%s", str);
 431                         free(str);
 432                 }
 433                 fprintf(fp, "\n");
 434                 *puid = saveuid;
 435                 *pgid = savegid;
 436                 *pmode = savemode;
 437                 *pflags = saveflags;
 438         }
 439         return (0);
 440 }
 441
 442 /*
 443  * dcmp --
 444  *      used as a comparison function passed to fts_open() to control
 445  *      the order in which fts_read() returns results.  We make
 446  *      directories sort after non-directories, but otherwise sort in
 447  *      strcmp() order.
 448  *
 449  * Keep this in sync with nodecmp() in spec.c.
 450  */
 451 static int
 452 dcmp(const FTSENT *FTS_CONST *a, const FTSENT *FTS_CONST *b)
 453 {
 454
 455         if (S_ISDIR((*a)->fts_statp->st_mode)) {
 456                 if (!S_ISDIR((*b)->fts_statp->st_mode))
 457                         return (1);
 458         } else if (S_ISDIR((*b)->fts_statp->st_mode))
 459                 return (-1);
 460         return (strcmp((*a)->fts_name, (*b)->fts_name));
 461 }
 462
 463 void
 464 output(FILE *fp, int indent, int *offset, const char *fmt, ...)
 465 {
 466         va_list ap;
 467         char buf[1024];
 468
 469         va_start(ap, fmt);
 470         vsnprintf(buf, sizeof(buf), fmt, ap);
 471         va_end(ap);
 472
 473         if (*offset + strlen(buf) > MAXLINELEN - 3) {
 474                 fprintf(fp, " \\\n%*s", INDENTNAMELEN + indent, "");
 475                 *offset = INDENTNAMELEN + indent;
 476         }
 477         *offset += fprintf(fp, " %s", buf) + 1;
 478 }