usr.sbin/mtree/create.c

   1 /*      $NetBSD: create.c,v 1.65 2012/10/05 01:21:44 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 #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 1.65 2012/10/05 01:21:44 christos 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 #ifdef __FreeBSD__
  87 #define FTS_CONST const
  88 #else
  89 #define FTS_CONST
  90 #endif
  91
  92 static int      dcmp(const FTSENT *FTS_CONST *, const FTSENT *FTS_CONST *);
  93 static void     output(int, int *, const char *, ...)
  94         __attribute__((__format__(__printf__, 3, 4)));
  95 static int      statd(FTS *, FTSENT *, uid_t *, gid_t *, mode_t *, u_long *);
  96 static void     statf(int, FTSENT *);
  97
  98 void
  99 cwalk(void)
 100 {
 101         FTS *t;
 102         FTSENT *p;
 103         time_t clocktime;
 104         char host[MAXHOSTNAMELEN + 1];
 105         const char *user;
 106         char *argv[2];
 107         char  dot[] = ".";
 108         int indent = 0;
 109
 110         argv[0] = dot;
 111         argv[1] = NULL;
 112
 113         time(&clocktime);
 114         gethostname(host, sizeof(host));
 115         host[sizeof(host) - 1] = '\0';
 116         if ((user = getlogin()) == NULL) {
 117                 struct passwd *pw;
 118                 user = (pw = getpwuid(getuid())) == NULL ? pw->pw_name :
 119                     "<unknown>";
 120         }
 121
 122         if (!nflag)
 123                 printf(
 124                     "#\t   user: %s\n#\tmachine: %s\n#\t   tree: %s\n"
 125                     "#\t   date: %s",
 126                     user, host, fullpath, ctime(&clocktime));
 127
 128         if ((t = fts_open(argv, ftsoptions, dcmp)) == NULL)
 129                 mtree_err("fts_open: %s", strerror(errno));
 130         while ((p = fts_read(t)) != NULL) {
 131                 if (jflag)
 132                         indent = p->fts_level * 4;
 133                 if (check_excludes(p->fts_name, p->fts_path)) {
 134                         fts_set(t, p, FTS_SKIP);
 135                         continue;
 136                 }
 137                 switch(p->fts_info) {
 138                 case FTS_D:
 139                         if (!nflag)
 140                                 printf("\n# %s\n", p->fts_path);
 141                         statd(t, p, &uid, &gid, &mode, &flags);
 142                         statf(indent, p);
 143                         break;
 144                 case FTS_DP:
 145                         if (!nflag && p->fts_level > 0)
 146                                 printf("%*s# %s\n%*s..\n\n", indent, "",
 147                                     p->fts_path, indent, "");
 148                         break;
 149                 case FTS_DNR:
 150                 case FTS_ERR:
 151                 case FTS_NS:
 152                         mtree_err("%s: %s",
 153                             p->fts_path, strerror(p->fts_errno));
 154                         break;
 155                 default:
 156                         if (!dflag)
 157                                 statf(indent, p);
 158                         break;
 159
 160                 }
 161         }
 162         fts_close(t);
 163         if (sflag && keys & F_CKSUM)
 164                 mtree_err("%s checksum: %u", fullpath, crc_total);
 165 }
 166
 167 static void
 168 statf(int indent, FTSENT *p)
 169 {
 170         u_int32_t len, val;
 171         int fd, offset;
 172         const char *name = NULL;
 173 #if !defined(NO_MD5) || !defined(NO_RMD160) || !defined(NO_SHA1) || !defined(NO_SHA2)
 174         char *digestbuf;
 175 #endif
 176
 177         offset = printf("%*s%s%s", indent, "",
 178             S_ISDIR(p->fts_statp->st_mode) ? "" : "    ", vispath(p->fts_name));
 179
 180         if (offset > (INDENTNAMELEN + indent))
 181                 offset = MAXLINELEN;
 182         else
 183                 offset += printf("%*s", (INDENTNAMELEN + indent) - offset, "");
 184
 185         if (!S_ISREG(p->fts_statp->st_mode))
 186                 output(indent, &offset, "type=%s",
 187                     inotype(p->fts_statp->st_mode));
 188         if (keys & (F_UID | F_UNAME) && p->fts_statp->st_uid != uid) {
 189                 if (keys & F_UNAME &&
 190                     (name = user_from_uid(p->fts_statp->st_uid, 1)) != NULL)
 191                         output(indent, &offset, "uname=%s", name);
 192                 if (keys & F_UID || (keys & F_UNAME && name == NULL))
 193                         output(indent, &offset, "uid=%u", p->fts_statp->st_uid);
 194         }
 195         if (keys & (F_GID | F_GNAME) && p->fts_statp->st_gid != gid) {
 196                 if (keys & F_GNAME &&
 197                     (name = group_from_gid(p->fts_statp->st_gid, 1)) != NULL)
 198                         output(indent, &offset, "gname=%s", name);
 199                 if (keys & F_GID || (keys & F_GNAME && name == NULL))
 200                         output(indent, &offset, "gid=%u", p->fts_statp->st_gid);
 201         }
 202         if (keys & F_MODE && (p->fts_statp->st_mode & MBITS) != mode)
 203                 output(indent, &offset, "mode=%#o",
 204                     p->fts_statp->st_mode & MBITS);
 205         if (keys & F_DEV &&
 206             (S_ISBLK(p->fts_statp->st_mode) || S_ISCHR(p->fts_statp->st_mode)))
 207                 output(indent, &offset, "device=%#llx",
 208                     (long long)p->fts_statp->st_rdev);
 209         if (keys & F_NLINK && p->fts_statp->st_nlink != 1)
 210                 output(indent, &offset, "nlink=%u", p->fts_statp->st_nlink);
 211         if (keys & F_SIZE && S_ISREG(p->fts_statp->st_mode))
 212                 output(indent, &offset, "size=%lld",
 213                     (long long)p->fts_statp->st_size);
 214         if (keys & F_TIME)
 215 #if defined(BSD4_4) && !defined(HAVE_NBTOOL_CONFIG_H)
 216                 output(indent, &offset, "time=%ld.%09ld",
 217                     (long)p->fts_statp->st_mtimespec.tv_sec,
 218                     p->fts_statp->st_mtimespec.tv_nsec);
 219 #else
 220                 output(indent, &offset, "time=%ld.%09ld",
 221                     (long)p->fts_statp->st_mtime, (long)0);
 222 #endif
 223         if (keys & F_CKSUM && S_ISREG(p->fts_statp->st_mode)) {
 224                 if ((fd = open(p->fts_accpath, O_RDONLY, 0)) < 0 ||
 225                     crc(fd, &val, &len))
 226                         mtree_err("%s: %s", p->fts_accpath, strerror(errno));
 227                 close(fd);
 228                 output(indent, &offset, "cksum=%lu", (long)val);
 229         }
 230 #ifndef NO_MD5
 231         if (keys & F_MD5 && S_ISREG(p->fts_statp->st_mode)) {
 232                 if ((digestbuf = MD5File(p->fts_accpath, NULL)) == NULL)
 233                         mtree_err("%s: MD5File failed: %s", p->fts_accpath,
 234                             strerror(errno));
 235                 output(indent, &offset, "%s=%s", MD5KEY, digestbuf);
 236                 free(digestbuf);
 237         }
 238 #endif  /* ! NO_MD5 */
 239 #ifndef NO_RMD160
 240         if (keys & F_RMD160 && S_ISREG(p->fts_statp->st_mode)) {
 241                 if ((digestbuf = RMD160File(p->fts_accpath, NULL)) == NULL)
 242                         mtree_err("%s: RMD160File failed: %s", p->fts_accpath,
 243                             strerror(errno));
 244                 output(indent, &offset, "%s=%s", RMD160KEY, digestbuf);
 245                 free(digestbuf);
 246         }
 247 #endif  /* ! NO_RMD160 */
 248 #ifndef NO_SHA1
 249         if (keys & F_SHA1 && S_ISREG(p->fts_statp->st_mode)) {
 250                 if ((digestbuf = SHA1File(p->fts_accpath, NULL)) == NULL)
 251                         mtree_err("%s: SHA1File failed: %s", p->fts_accpath,
 252                             strerror(errno));
 253                 output(indent, &offset, "%s=%s", SHA1KEY, digestbuf);
 254                 free(digestbuf);
 255         }
 256 #endif  /* ! NO_SHA1 */
 257 #ifndef NO_SHA2
 258         if (keys & F_SHA256 && S_ISREG(p->fts_statp->st_mode)) {
 259                 if ((digestbuf = SHA256_File(p->fts_accpath, NULL)) == NULL)
 260                         mtree_err("%s: SHA256_File failed: %s", p->fts_accpath,
 261                             strerror(errno));
 262                 output(indent, &offset, "%s=%s", SHA256KEY, digestbuf);
 263                 free(digestbuf);
 264         }
 265 #ifdef SHA384_BLOCK_LENGTH
 266         if (keys & F_SHA384 && S_ISREG(p->fts_statp->st_mode)) {
 267                 if ((digestbuf = SHA384_File(p->fts_accpath, NULL)) == NULL)
 268                         mtree_err("%s: SHA384_File failed: %s", p->fts_accpath,
 269                             strerror(errno));
 270                 output(indent, &offset, "%s=%s", SHA384KEY, digestbuf);
 271                 free(digestbuf);
 272         }
 273 #endif
 274         if (keys & F_SHA512 && S_ISREG(p->fts_statp->st_mode)) {
 275                 if ((digestbuf = SHA512_File(p->fts_accpath, NULL)) == NULL)
 276                         mtree_err("%s: SHA512_File failed: %s", p->fts_accpath,
 277                             strerror(errno));
 278                 output(indent, &offset, "%s=%s", SHA512KEY, digestbuf);
 279                 free(digestbuf);
 280         }
 281 #endif  /* ! NO_SHA2 */
 282         if (keys & F_SLINK &&
 283             (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE))
 284                 output(indent, &offset, "link=%s",
 285                     vispath(rlink(p->fts_accpath)));
 286 #if HAVE_STRUCT_STAT_ST_FLAGS
 287         if (keys & F_FLAGS && p->fts_statp->st_flags != flags) {
 288                 char *str = flags_to_string(p->fts_statp->st_flags, "none");
 289                 output(indent, &offset, "flags=%s", str);
 290                 free(str);
 291         }
 292 #endif
 293         putchar('\n');
 294 }
 295
 296 /* XXX
 297  * FLAGS2INDEX will fail once the user and system settable bits need more
 298  * than one byte, respectively.
 299  */
 300 #define FLAGS2INDEX(x)  (((x >> 8) & 0x0000ff00) | (x & 0x000000ff))
 301
 302 #define MTREE_MAXGID    5000
 303 #define MTREE_MAXUID    5000
 304 #define MTREE_MAXMODE   (MBITS + 1)
 305 #if HAVE_STRUCT_STAT_ST_FLAGS
 306 #define MTREE_MAXFLAGS  (FLAGS2INDEX(CH_MASK) + 1)   /* 1808 */
 307 #else
 308 #define MTREE_MAXFLAGS  1
 309 #endif
 310 #define MTREE_MAXS 16
 311
 312 static int
 313 statd(FTS *t, FTSENT *parent, uid_t *puid, gid_t *pgid, mode_t *pmode,
 314       u_long *pflags)
 315 {
 316         FTSENT *p;
 317         gid_t sgid;
 318         uid_t suid;
 319         mode_t smode;
 320 #if HAVE_STRUCT_STAT_ST_FLAGS
 321         u_long sflags = 0;
 322 #endif
 323         const char *name = NULL;
 324         gid_t savegid;
 325         uid_t saveuid;
 326         mode_t savemode;
 327         u_long saveflags;
 328         u_short maxgid, maxuid, maxmode, maxflags;
 329         u_short g[MTREE_MAXGID], u[MTREE_MAXUID],
 330                 m[MTREE_MAXMODE], f[MTREE_MAXFLAGS];
 331         static int first = 1;
 332
 333         savegid = *pgid;
 334         saveuid = *puid;
 335         savemode = *pmode;
 336         saveflags = *pflags;
 337         if ((p = fts_children(t, 0)) == NULL) {
 338                 if (errno)
 339                         mtree_err("%s: %s", RP(parent), strerror(errno));
 340                 return (1);
 341         }
 342
 343         memset(g, 0, sizeof(g));
 344         memset(u, 0, sizeof(u));
 345         memset(m, 0, sizeof(m));
 346         memset(f, 0, sizeof(f));
 347
 348         maxuid = maxgid = maxmode = maxflags = 0;
 349         for (; p; p = p->fts_link) {
 350                 smode = p->fts_statp->st_mode & MBITS;
 351                 if (smode < MTREE_MAXMODE && ++m[smode] > maxmode) {
 352                         savemode = smode;
 353                         maxmode = m[smode];
 354                 }
 355                 sgid = p->fts_statp->st_gid;
 356                 if (sgid < MTREE_MAXGID && ++g[sgid] > maxgid) {
 357                         savegid = sgid;
 358                         maxgid = g[sgid];
 359                 }
 360                 suid = p->fts_statp->st_uid;
 361                 if (suid < MTREE_MAXUID && ++u[suid] > maxuid) {
 362                         saveuid = suid;
 363                         maxuid = u[suid];
 364                 }
 365
 366 #if HAVE_STRUCT_STAT_ST_FLAGS
 367                 sflags = FLAGS2INDEX(p->fts_statp->st_flags);
 368                 if (sflags < MTREE_MAXFLAGS && ++f[sflags] > maxflags) {
 369                         saveflags = p->fts_statp->st_flags;
 370                         maxflags = f[sflags];
 371                 }
 372 #endif
 373         }
 374         /*
 375          * If the /set record is the same as the last one we do not need to
 376          * output a new one.  So first we check to see if anything changed.
 377          * Note that we always output a /set record for the first directory.
 378          */
 379         if (((keys & (F_UNAME | F_UID)) && (*puid != saveuid)) ||
 380             ((keys & (F_GNAME | F_GID)) && (*pgid != savegid)) ||
 381             ((keys & F_MODE) && (*pmode != savemode)) ||
 382             ((keys & F_FLAGS) && (*pflags != saveflags)) ||
 383             first) {
 384                 first = 0;
 385                 printf("/set type=file");
 386                 if (keys & (F_UID | F_UNAME)) {
 387                         if (keys & F_UNAME &&
 388                             (name = user_from_uid(saveuid, 1)) != NULL)
 389                                 printf(" uname=%s", name);
 390                         if (keys & F_UID || (keys & F_UNAME && name == NULL))
 391                                 printf(" uid=%lu", (u_long)saveuid);
 392                 }
 393                 if (keys & (F_GID | F_GNAME)) {
 394                         if (keys & F_GNAME &&
 395                             (name = group_from_gid(savegid, 1)) != NULL)
 396                                 printf(" gname=%s", name);
 397                         if (keys & F_GID || (keys & F_GNAME && name == NULL))
 398                                 printf(" gid=%lu", (u_long)savegid);
 399                 }
 400                 if (keys & F_MODE)
 401                         printf(" mode=%#lo", (u_long)savemode);
 402                 if (keys & F_NLINK)
 403                         printf(" nlink=1");
 404                 if (keys & F_FLAGS) {
 405                         char *str = flags_to_string(saveflags, "none");
 406                         printf(" flags=%s", str);
 407                         free(str);
 408                 }
 409                 printf("\n");
 410                 *puid = saveuid;
 411                 *pgid = savegid;
 412                 *pmode = savemode;
 413                 *pflags = saveflags;
 414         }
 415         return (0);
 416 }
 417
 418 /*
 419  * dcmp --
 420  *      used as a comparison function passed to fts_open() to control
 421  *      the order in which fts_read() returns results.  We make
 422  *      directories sort after non-directories, but otherwise sort in
 423  *      strcmp() order.
 424  *
 425  * Keep this in sync with nodecmp() in spec.c.
 426  */
 427 static int
 428 dcmp(const FTSENT *FTS_CONST *a, const FTSENT *FTS_CONST *b)
 429 {
 430
 431         if (S_ISDIR((*a)->fts_statp->st_mode)) {
 432                 if (!S_ISDIR((*b)->fts_statp->st_mode))
 433                         return (1);
 434         } else if (S_ISDIR((*b)->fts_statp->st_mode))
 435                 return (-1);
 436         return (strcmp((*a)->fts_name, (*b)->fts_name));
 437 }
 438
 439 void
 440 output(int indent, int *offset, const char *fmt, ...)
 441 {
 442         va_list ap;
 443         char buf[1024];
 444
 445         va_start(ap, fmt);
 446         vsnprintf(buf, sizeof(buf), fmt, ap);
 447         va_end(ap);
 448
 449         if (*offset + strlen(buf) > MAXLINELEN - 3) {
 450                 printf(" \\\n%*s", INDENTNAMELEN + indent, "");
 451                 *offset = INDENTNAMELEN + indent;
 452         }
 453         *offset += printf(" %s", buf) + 1;
 454 }