usr.sbin/mtree/create.c

   1 /*      $NetBSD: create.c,v 1.58 2009/04/03 21:18:59 apb Exp $  */
   2
   3 /*-
   4  * Copyright (c) 1989, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #if HAVE_NBTOOL_CONFIG_H
  33 #include "nbtool_config.h"
  34 #endif
  35
  36 #include <sys/cdefs.h>
  37 #if defined(__RCSID) && !defined(lint)
  38 #if 0
  39 static char sccsid[] = "@(#)create.c    8.1 (Berkeley) 6/6/93";
  40 #else
  41 __RCSID("$NetBSD: create.c,v 1.58 2009/04/03 21:18:59 apb Exp $");
  42 #endif
  43 #endif /* not lint */
  44
  45 #include <sys/param.h>
  46 #include <sys/stat.h>
  47
  48 #if ! HAVE_NBTOOL_CONFIG_H
  49 #include <dirent.h>
  50 #endif
  51
  52 #include <errno.h>
  53 #include <fcntl.h>
  54 #include <grp.h>
  55 #include <pwd.h>
  56 #include <stdio.h>
  57 #include <stdarg.h>
  58 #include <stdlib.h>
  59 #include <string.h>
  60 #include <time.h>
  61 #include <unistd.h>
  62
  63 #ifndef NO_MD5
  64 #include <md5.h>
  65 #endif
  66 #ifndef NO_RMD160
  67 #include <rmd160.h>
  68 #endif
  69 #ifndef NO_SHA1
  70 #include <sha1.h>
  71 #endif
  72 #ifndef NO_SHA2
  73 #include <sha2.h>
  74 #endif
  75
  76 #include "extern.h"
  77
  78 #define INDENTNAMELEN   15
  79 #define MAXLINELEN      80
  80
  81 static gid_t gid;
  82 static uid_t uid;
  83 static mode_t mode;
  84 static u_long flags;
  85
  86 static int      dcmp(const FTSENT **, const FTSENT **);
  87 static void     output(int *, const char *, ...)
  88         __attribute__((__format__(__printf__, 2, 3)));
  89 static int      statd(FTS *, FTSENT *, uid_t *, gid_t *, mode_t *, u_long *);
  90 static void     statf(FTSENT *);
  91
  92 void
  93 cwalk(void)
  94 {
  95         FTS *t;
  96         FTSENT *p;
  97         time_t clocktime;
  98         char host[MAXHOSTNAMELEN + 1];
  99         const char *user;
 100         char *argv[2];
 101         char  dot[] = ".";
 102
 103         argv[0] = dot;
 104         argv[1] = NULL;
 105
 106         time(&clocktime);
 107         gethostname(host, sizeof(host));
 108         host[sizeof(host) - 1] = '\0';
 109         if ((user = getlogin()) == NULL) {
 110                 struct passwd *pw;
 111                 user = (pw = getpwuid(getuid())) == NULL ? pw->pw_name :
 112                     "<unknown>";
 113         }
 114
 115         printf(
 116             "#\t   user: %s\n#\tmachine: %s\n#\t   tree: %s\n#\t   date: %s",
 117             user, host, fullpath, ctime(&clocktime));
 118
 119         if ((t = fts_open(argv, ftsoptions, dcmp)) == NULL)
 120                 mtree_err("fts_open: %s", strerror(errno));
 121         while ((p = fts_read(t)) != NULL) {
 122                 if (check_excludes(p->fts_name, p->fts_path)) {
 123                         fts_set(t, p, FTS_SKIP);
 124                         continue;
 125                 }
 126                 switch(p->fts_info) {
 127                 case FTS_D:
 128                         printf("\n# %s\n", p->fts_path);
 129                         statd(t, p, &uid, &gid, &mode, &flags);
 130                         statf(p);
 131                         break;
 132                 case FTS_DP:
 133                         if (p->fts_level > 0)
 134                                 printf("# %s\n..\n\n", p->fts_path);
 135                         break;
 136                 case FTS_DNR:
 137                 case FTS_ERR:
 138                 case FTS_NS:
 139                         mtree_err("%s: %s",
 140                             p->fts_path, strerror(p->fts_errno));
 141                         break;
 142                 default:
 143                         if (!dflag)
 144                                 statf(p);
 145                         break;
 146
 147                 }
 148         }
 149         fts_close(t);
 150         if (sflag && keys & F_CKSUM)
 151                 mtree_err("%s checksum: %u", fullpath, crc_total);
 152 }
 153
 154 static void
 155 statf(FTSENT *p)
 156 {
 157         u_int32_t len, val;
 158         int fd, indent;
 159         const char *name;
 160 #if !defined(NO_MD5) || !defined(NO_RMD160) || !defined(NO_SHA1) || !defined(NO_SHA2)
 161         char *digestbuf;
 162 #endif
 163
 164         indent = printf("%s%s",
 165             S_ISDIR(p->fts_statp->st_mode) ? "" : "    ", vispath(p->fts_name));
 166
 167         if (indent > INDENTNAMELEN)
 168                 indent = MAXLINELEN;
 169         else
 170                 indent += printf("%*s", INDENTNAMELEN - indent, "");
 171
 172         if (!S_ISREG(p->fts_statp->st_mode))
 173                 output(&indent, "type=%s", inotype(p->fts_statp->st_mode));
 174         if (keys & (F_UID | F_UNAME) && p->fts_statp->st_uid != uid) {
 175                 if (keys & F_UNAME &&
 176                     (name = user_from_uid(p->fts_statp->st_uid, 1)) != NULL)
 177                         output(&indent, "uname=%s", name);
 178                 else /* if (keys & F_UID) */
 179                         output(&indent, "uid=%u", p->fts_statp->st_uid);
 180         }
 181         if (keys & (F_GID | F_GNAME) && p->fts_statp->st_gid != gid) {
 182                 if (keys & F_GNAME &&
 183                     (name = group_from_gid(p->fts_statp->st_gid, 1)) != NULL)
 184                         output(&indent, "gname=%s", name);
 185                 else /* if (keys & F_GID) */
 186                         output(&indent, "gid=%u", p->fts_statp->st_gid);
 187         }
 188         if (keys & F_MODE && (p->fts_statp->st_mode & MBITS) != mode)
 189                 output(&indent, "mode=%#o", p->fts_statp->st_mode & MBITS);
 190         if (keys & F_DEV &&
 191             (S_ISBLK(p->fts_statp->st_mode) || S_ISCHR(p->fts_statp->st_mode)))
 192                 output(&indent, "device=%#llx",
 193                     (long long)p->fts_statp->st_rdev);
 194         if (keys & F_NLINK && p->fts_statp->st_nlink != 1)
 195                 output(&indent, "nlink=%u", p->fts_statp->st_nlink);
 196         if (keys & F_SIZE && S_ISREG(p->fts_statp->st_mode))
 197                 output(&indent, "size=%lld", (long long)p->fts_statp->st_size);
 198         if (keys & F_TIME)
 199 #if defined(BSD4_4) && !defined(HAVE_NBTOOL_CONFIG_H)
 200                 output(&indent, "time=%ld.%ld",
 201                     (long)p->fts_statp->st_mtimespec.tv_sec,
 202                     p->fts_statp->st_mtimespec.tv_nsec);
 203 #else
 204                 output(&indent, "time=%ld.%ld",
 205                     (long)p->fts_statp->st_mtime, (long)0);
 206 #endif
 207         if (keys & F_CKSUM && S_ISREG(p->fts_statp->st_mode)) {
 208                 if ((fd = open(p->fts_accpath, O_RDONLY, 0)) < 0 ||
 209                     crc(fd, &val, &len))
 210                         mtree_err("%s: %s", p->fts_accpath, strerror(errno));
 211                 close(fd);
 212                 output(&indent, "cksum=%lu", (long)val);
 213         }
 214 #ifndef NO_MD5
 215         if (keys & F_MD5 && S_ISREG(p->fts_statp->st_mode)) {
 216                 if ((digestbuf = MD5File(p->fts_accpath, NULL)) == NULL)
 217                         mtree_err("%s: MD5File failed: %s", p->fts_accpath, strerror(errno));
 218                 output(&indent, "md5=%s", digestbuf);
 219                 free(digestbuf);
 220         }
 221 #endif  /* ! NO_MD5 */
 222 #ifndef NO_RMD160
 223         if (keys & F_RMD160 && S_ISREG(p->fts_statp->st_mode)) {
 224                 if ((digestbuf = RMD160File(p->fts_accpath, NULL)) == NULL)
 225                         mtree_err("%s: RMD160File failed: %s", p->fts_accpath, strerror(errno));
 226                 output(&indent, "rmd160=%s", digestbuf);
 227                 free(digestbuf);
 228         }
 229 #endif  /* ! NO_RMD160 */
 230 #ifndef NO_SHA1
 231         if (keys & F_SHA1 && S_ISREG(p->fts_statp->st_mode)) {
 232                 if ((digestbuf = SHA1File(p->fts_accpath, NULL)) == NULL)
 233                         mtree_err("%s: SHA1File failed: %s", p->fts_accpath, strerror(errno));
 234                 output(&indent, "sha1=%s", digestbuf);
 235                 free(digestbuf);
 236         }
 237 #endif  /* ! NO_SHA1 */
 238 #ifndef NO_SHA2
 239         if (keys & F_SHA256 && S_ISREG(p->fts_statp->st_mode)) {
 240                 if ((digestbuf = SHA256_File(p->fts_accpath, NULL)) == NULL)
 241                         mtree_err("%s: SHA256_File failed: %s", p->fts_accpath, strerror(errno));
 242                 output(&indent, "sha256=%s", digestbuf);
 243                 free(digestbuf);
 244         }
 245         if (keys & F_SHA384 && S_ISREG(p->fts_statp->st_mode)) {
 246                 if ((digestbuf = SHA384_File(p->fts_accpath, NULL)) == NULL)
 247                         mtree_err("%s: SHA384_File failed: %s", p->fts_accpath, strerror(errno));
 248                 output(&indent, "sha384=%s", digestbuf);
 249                 free(digestbuf);
 250         }
 251         if (keys & F_SHA512 && S_ISREG(p->fts_statp->st_mode)) {
 252                 if ((digestbuf = SHA512_File(p->fts_accpath, NULL)) == NULL)
 253                         mtree_err("%s: SHA512_File failed: %s", p->fts_accpath, strerror(errno));
 254                 output(&indent, "sha512=%s", digestbuf);
 255                 free(digestbuf);
 256         }
 257 #endif  /* ! NO_SHA2 */
 258         if (keys & F_SLINK &&
 259             (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE))
 260                 output(&indent, "link=%s", vispath(rlink(p->fts_accpath)));
 261 #if HAVE_STRUCT_STAT_ST_FLAGS
 262         if (keys & F_FLAGS && p->fts_statp->st_flags != flags)
 263                 output(&indent, "flags=%s",
 264                     flags_to_string(p->fts_statp->st_flags, "none"));
 265 #endif
 266         putchar('\n');
 267 }
 268
 269 /* XXX
 270  * FLAGS2INDEX will fail once the user and system settable bits need more
 271  * than one byte, respectively.
 272  */
 273 #define FLAGS2INDEX(x)  (((x >> 8) & 0x0000ff00) | (x & 0x000000ff))
 274
 275 #define MTREE_MAXGID    5000
 276 #define MTREE_MAXUID    5000
 277 #define MTREE_MAXMODE   (MBITS + 1)
 278 #if HAVE_STRUCT_STAT_ST_FLAGS
 279 #define MTREE_MAXFLAGS  (FLAGS2INDEX(CH_MASK) + 1)   /* 1808 */
 280 #else
 281 #define MTREE_MAXFLAGS  1
 282 #endif
 283 #define MTREE_MAXS 16
 284
 285 static int
 286 statd(FTS *t, FTSENT *parent, uid_t *puid, gid_t *pgid, mode_t *pmode,
 287       u_long *pflags)
 288 {
 289         FTSENT *p;
 290         gid_t sgid;
 291         uid_t suid;
 292         mode_t smode;
 293         u_long sflags = 0;
 294         const char *name;
 295         gid_t savegid;
 296         uid_t saveuid;
 297         mode_t savemode;
 298         u_long saveflags;
 299         u_short maxgid, maxuid, maxmode, maxflags;
 300         u_short g[MTREE_MAXGID], u[MTREE_MAXUID],
 301                 m[MTREE_MAXMODE], f[MTREE_MAXFLAGS];
 302         static int first = 1;
 303
 304         savegid = *pgid;
 305         saveuid = *puid;
 306         savemode = *pmode;
 307         saveflags = *pflags;
 308         if ((p = fts_children(t, 0)) == NULL) {
 309                 if (errno)
 310                         mtree_err("%s: %s", RP(parent), strerror(errno));
 311                 return (1);
 312         }
 313
 314         memset(g, 0, sizeof(g));
 315         memset(u, 0, sizeof(u));
 316         memset(m, 0, sizeof(m));
 317         memset(f, 0, sizeof(f));
 318
 319         maxuid = maxgid = maxmode = maxflags = 0;
 320         for (; p; p = p->fts_link) {
 321                 smode = p->fts_statp->st_mode & MBITS;
 322                 if (smode < MTREE_MAXMODE && ++m[smode] > maxmode) {
 323                         savemode = smode;
 324                         maxmode = m[smode];
 325                 }
 326                 sgid = p->fts_statp->st_gid;
 327                 if (sgid < MTREE_MAXGID && ++g[sgid] > maxgid) {
 328                         savegid = sgid;
 329                         maxgid = g[sgid];
 330                 }
 331                 suid = p->fts_statp->st_uid;
 332                 if (suid < MTREE_MAXUID && ++u[suid] > maxuid) {
 333                         saveuid = suid;
 334                         maxuid = u[suid];
 335                 }
 336
 337 #if HAVE_STRUCT_STAT_ST_FLAGS
 338                 sflags = FLAGS2INDEX(p->fts_statp->st_flags);
 339                 if (sflags < MTREE_MAXFLAGS && ++f[sflags] > maxflags) {
 340                         saveflags = p->fts_statp->st_flags;
 341                         maxflags = f[sflags];
 342                 }
 343 #endif
 344         }
 345         /*
 346          * If the /set record is the same as the last one we do not need to
 347          * output a new one.  So first we check to see if anything changed.
 348          * Note that we always output a /set record for the first directory.
 349          */
 350         if (((keys & (F_UNAME | F_UID)) && (*puid != saveuid)) ||
 351             ((keys & (F_GNAME | F_GID)) && (*pgid != savegid)) ||
 352             ((keys & F_MODE) && (*pmode != savemode)) ||
 353             ((keys & F_FLAGS) && (*pflags != saveflags)) ||
 354             first) {
 355                 first = 0;
 356                 printf("/set type=file");
 357                 if (keys & (F_UID | F_UNAME)) {
 358                         if (keys & F_UNAME &&
 359                             (name = user_from_uid(saveuid, 1)) != NULL)
 360                                 printf(" uname=%s", name);
 361                         else /* if (keys & F_UID) */
 362                                 printf(" uid=%lu", (u_long)saveuid);
 363                 }
 364                 if (keys & (F_GID | F_GNAME)) {
 365                         if (keys & F_GNAME &&
 366                             (name = group_from_gid(savegid, 1)) != NULL)
 367                                 printf(" gname=%s", name);
 368                         else /* if (keys & F_UID) */
 369                                 printf(" gid=%lu", (u_long)savegid);
 370                 }
 371                 if (keys & F_MODE)
 372                         printf(" mode=%#lo", (u_long)savemode);
 373                 if (keys & F_NLINK)
 374                         printf(" nlink=1");
 375                 if (keys & F_FLAGS)
 376                         printf(" flags=%s",
 377                             flags_to_string(saveflags, "none"));
 378                 printf("\n");
 379                 *puid = saveuid;
 380                 *pgid = savegid;
 381                 *pmode = savemode;
 382                 *pflags = saveflags;
 383         }
 384         return (0);
 385 }
 386
 387 /*
 388  * dcmp --
 389  *      used as a comparison function passed to fts_open() to control
 390  *      the order in which fts_read() returns results.  We make
 391  *      directories sort after non-directories, but otherwise sort in
 392  *      strcmp() order.
 393  *
 394  * Keep this in sync with nodecmp() in spec.c.
 395  */
 396 static int
 397 dcmp(const FTSENT **a, const FTSENT **b)
 398 {
 399
 400         if (S_ISDIR((*a)->fts_statp->st_mode)) {
 401                 if (!S_ISDIR((*b)->fts_statp->st_mode))
 402                         return (1);
 403         } else if (S_ISDIR((*b)->fts_statp->st_mode))
 404                 return (-1);
 405         return (strcmp((*a)->fts_name, (*b)->fts_name));
 406 }
 407
 408 void
 409 output(int *offset, const char *fmt, ...)
 410 {
 411         va_list ap;
 412         char buf[1024];
 413
 414         va_start(ap, fmt);
 415         vsnprintf(buf, sizeof(buf), fmt, ap);
 416         va_end(ap);
 417
 418         if (*offset + strlen(buf) > MAXLINELEN - 3) {
 419                 printf(" \\\n%*s", INDENTNAMELEN, "");
 420                 *offset = INDENTNAMELEN;
 421         }
 422         *offset += printf(" %s", buf) + 1;
 423 }