usr.sbin/mtree/create.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. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * @(#)create.c 8.1 (Berkeley) 6/6/93
  34  * $FreeBSD: src/usr.sbin/mtree/create.c,v 1.18.2.3 2001/01/12 19:17:18 phk Exp $
  35  * $DragonFly: src/usr.sbin/mtree/create.c,v 1.5 2004/03/15 16:24:22 dillon Exp $
  36  */
  37
  38 #include <sys/param.h>
  39 #include <sys/stat.h>
  40 #include <dirent.h>
  41 #include <err.h>
  42 #include <errno.h>
  43 #include <fcntl.h>
  44 #include <fts.h>
  45 #include <grp.h>
  46 #ifdef MD5
  47 #include <md5.h>
  48 #endif
  49 #ifdef SHA1
  50 #include <sha.h>
  51 #endif
  52 #ifdef RMD160
  53 #include <ripemd.h>
  54 #endif
  55 #include <pwd.h>
  56 #include <stdio.h>
  57 #include <time.h>
  58 #include <unistd.h>
  59 #include <stdarg.h>
  60 #include <vis.h>
  61 #include "mtree.h"
  62 #include "extern.h"
  63
  64 #define INDENTNAMELEN   15
  65 #define MAXLINELEN      80
  66
  67 static gid_t gid;
  68 static uid_t uid;
  69 static mode_t mode;
  70 static u_long flags = 0xffffffff;
  71
  72 static int      dsort(const FTSENT * const *, const FTSENT * const *);
  73 static void     output(int, int *, const char *, ...);
  74 static int      statd(FTS *, FTSENT *, uid_t *, gid_t *, mode_t *,
  75                            u_long *);
  76 static void     statf(int, FTSENT *);
  77
  78 void
  79 cwalk(void)
  80 {
  81         FTS *t;
  82         FTSENT *p;
  83         time_t clk;
  84         char *argv[2], host[MAXHOSTNAMELEN], dot[] = ".";
  85         int indent = 0;
  86
  87         time(&clk);
  88         gethostname(host, sizeof(host));
  89         printf(
  90             "#\t   user: %s\n#\tmachine: %s\n#\t   tree: %s\n#\t   date: %s",
  91             getlogin(), host, fullpath, ctime(&clk));
  92
  93         argv[0] = dot;
  94         argv[1] = NULL;
  95         if ((t = fts_open(argv, ftsoptions, dsort)) == NULL)
  96                 err(1, "line %d: fts_open", lineno);
  97         while ((p = fts_read(t))) {
  98                 if (iflag)
  99                         indent = p->fts_level * 4;
 100                 if (check_excludes(p->fts_name, p->fts_path)) {
 101                         fts_set(t, p, FTS_SKIP);
 102                         continue;
 103                 }
 104                 switch(p->fts_info) {
 105                 case FTS_D:
 106                         if (!dflag)
 107                                 printf("\n");
 108                         if (!nflag)
 109                                 printf("# %s\n", p->fts_path);
 110                         statd(t, p, &uid, &gid, &mode, &flags);
 111                         statf(indent, p);
 112                         break;
 113                 case FTS_DP:
 114                         if (!nflag && (p->fts_level > 0))
 115                                 printf("%*s# %s\n", indent, "", p->fts_path);
 116                         printf("%*s..\n", indent, "");
 117                         if (!dflag)
 118                                 printf("\n");
 119                         break;
 120                 case FTS_DNR:
 121                 case FTS_ERR:
 122                 case FTS_NS:
 123                         warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
 124                         break;
 125                 default:
 126                         if (!dflag)
 127                                 statf(indent, p);
 128                         break;
 129
 130                 }
 131         }
 132         fts_close(t);
 133         if (sflag && keys & F_CKSUM)
 134                 warnx("%s checksum: %lu", fullpath, crc_total);
 135 }
 136
 137 static void
 138 statf(int indent, FTSENT *p)
 139 {
 140         struct group *gr;
 141         struct passwd *pw;
 142         u_long len, val;
 143         int fd, offset;
 144         char *fflags;
 145         char *escaped_name;
 146
 147         escaped_name = calloc(1, p->fts_namelen * 4  +  1);
 148         if (escaped_name == NULL)
 149                 errx(1, "statf(): calloc() failed");
 150         strvis(escaped_name, p->fts_name, VIS_WHITE | VIS_OCTAL);
 151
 152         if (iflag || S_ISDIR(p->fts_statp->st_mode))
 153                 offset = printf("%*s%s", indent, "", escaped_name);
 154         else
 155                 offset = printf("%*s    %s", indent, "", escaped_name);
 156
 157         free(escaped_name);
 158
 159         if (offset > (INDENTNAMELEN + indent))
 160                 offset = MAXLINELEN;
 161         else
 162                 offset += printf("%*s", (INDENTNAMELEN + indent) - offset, "");
 163
 164         if (!S_ISREG(p->fts_statp->st_mode) && !dflag)
 165                 output(indent, &offset, "type=%s", inotype(p->fts_statp->st_mode));
 166         if (p->fts_statp->st_uid != uid) {
 167                 if (keys & F_UNAME) {
 168                         if ((pw = getpwuid(p->fts_statp->st_uid)) != NULL) {
 169                                 output(indent, &offset, "uname=%s", pw->pw_name);
 170                         } else {
 171                                 errx(1,
 172                                 "line %d: could not get uname for uid=%u",
 173                                 lineno, p->fts_statp->st_uid);
 174                         }
 175                 }
 176                 if (keys & F_UID)
 177                         output(indent, &offset, "uid=%u", p->fts_statp->st_uid);
 178         }
 179         if (p->fts_statp->st_gid != gid) {
 180                 if (keys & F_GNAME) {
 181                         if ((gr = getgrgid(p->fts_statp->st_gid)) != NULL) {
 182                                 output(indent, &offset, "gname=%s", gr->gr_name);
 183                         } else {
 184                                 errx(1,
 185                                 "line %d: could not get gname for gid=%u",
 186                                 lineno, p->fts_statp->st_gid);
 187                         }
 188                 }
 189                 if (keys & F_GID)
 190                         output(indent, &offset, "gid=%u", p->fts_statp->st_gid);
 191         }
 192         if (keys & F_MODE && (p->fts_statp->st_mode & MBITS) != mode)
 193                 output(indent, &offset, "mode=%#o", p->fts_statp->st_mode & MBITS);
 194         if (keys & F_NLINK && p->fts_statp->st_nlink != 1)
 195                 output(indent, &offset, "nlink=%u", p->fts_statp->st_nlink);
 196         if (keys & F_SIZE)
 197                 output(indent, &offset, "size=%qd", p->fts_statp->st_size);
 198         if (keys & F_TIME)
 199                 output(indent, &offset, "time=%ld.%ld",
 200                     p->fts_statp->st_mtimespec.tv_sec,
 201                     p->fts_statp->st_mtimespec.tv_nsec);
 202         if (keys & F_CKSUM && S_ISREG(p->fts_statp->st_mode)) {
 203                 if ((fd = open(p->fts_accpath, O_RDONLY, 0)) < 0 ||
 204                     crc(fd, &val, &len))
 205                         err(1, "line %d: %s", lineno, p->fts_accpath);
 206                 close(fd);
 207                 output(indent, &offset, "cksum=%lu", val);
 208         }
 209 #ifdef MD5
 210         if (keys & F_MD5 && S_ISREG(p->fts_statp->st_mode)) {
 211                 char *digest, buf[33];
 212
 213                 digest = MD5File(p->fts_accpath, buf);
 214                 if (!digest) {
 215                         err(1, "line %d: %s", lineno, p->fts_accpath);
 216                 } else {
 217                         output(indent, &offset, "md5digest=%s", digest);
 218                 }
 219         }
 220 #endif /* MD5 */
 221 #ifdef SHA1
 222         if (keys & F_SHA1 && S_ISREG(p->fts_statp->st_mode)) {
 223                 char *digest, buf[41];
 224
 225                 digest = SHA1_File(p->fts_accpath, buf);
 226                 if (!digest) {
 227                         err(1, "line %d: %s", lineno, p->fts_accpath);
 228                 } else {
 229                         output(indent, &offset, "sha1digest=%s", digest);
 230                 }
 231         }
 232 #endif /* SHA1 */
 233 #ifdef RMD160
 234         if (keys & F_RMD160 && S_ISREG(p->fts_statp->st_mode)) {
 235                 char *digest, buf[41];
 236
 237                 digest = RIPEMD160_File(p->fts_accpath, buf);
 238                 if (!digest) {
 239                         err(1, "line %d: %s", lineno, p->fts_accpath);
 240                 } else {
 241                         output(indent, &offset, "ripemd160digest=%s", digest);
 242                 }
 243         }
 244 #endif /* RMD160 */
 245         if (keys & F_SLINK &&
 246             (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE))
 247                 output(indent, &offset, "link=%s", rlink(p->fts_accpath));
 248         if (keys & F_FLAGS && p->fts_statp->st_flags != flags) {
 249                 fflags = flags_to_string(p->fts_statp->st_flags);
 250                 output(indent, &offset, "flags=%s", fflags);
 251                 free(fflags);
 252         }
 253         putchar('\n');
 254 }
 255
 256 #define MAXGID  5000
 257 #define MAXUID  5000
 258 #define MAXMODE MBITS + 1
 259 #define MAXFLAGS 256
 260 #define MAXS 16
 261
 262 static int
 263 statd(FTS *t, FTSENT *parent, uid_t *puid, gid_t *pgid, mode_t *pmode,
 264       u_long *pflags)
 265 {
 266         FTSENT *p;
 267         gid_t sgid;
 268         uid_t suid;
 269         mode_t smode;
 270         u_long sflags;
 271         struct group *gr;
 272         struct passwd *pw;
 273         gid_t savegid = *pgid;
 274         uid_t saveuid = *puid;
 275         mode_t savemode = *pmode;
 276         u_long saveflags = *pflags;
 277         u_short maxgid, maxuid, maxmode, maxflags;
 278         u_short g[MAXGID], u[MAXUID], m[MAXMODE], f[MAXFLAGS];
 279         char *fflags;
 280         static int first = 1;
 281
 282         if ((p = fts_children(t, 0)) == NULL) {
 283                 if (errno)
 284                         err(1, "line %d: %s", lineno, RP(parent));
 285                 return (1);
 286         }
 287
 288         bzero(g, sizeof(g));
 289         bzero(u, sizeof(u));
 290         bzero(m, sizeof(m));
 291         bzero(f, sizeof(f));
 292
 293         maxuid = maxgid = maxmode = maxflags = 0;
 294         for (; p; p = p->fts_link) {
 295                 if (!dflag || (dflag && S_ISDIR(p->fts_statp->st_mode))) {
 296                         smode = p->fts_statp->st_mode & MBITS;
 297                         if (smode < MAXMODE && ++m[smode] > maxmode) {
 298                                 savemode = smode;
 299                                 maxmode = m[smode];
 300                         }
 301                         sgid = p->fts_statp->st_gid;
 302                         if (sgid < MAXGID && ++g[sgid] > maxgid) {
 303                                 savegid = sgid;
 304                                 maxgid = g[sgid];
 305                         }
 306                         suid = p->fts_statp->st_uid;
 307                         if (suid < MAXUID && ++u[suid] > maxuid) {
 308                                 saveuid = suid;
 309                                 maxuid = u[suid];
 310                         }
 311
 312                         /*
 313                          * XXX
 314                          * note that the below will break when file flags
 315                          * are extended beyond the first 4 bytes of each
 316                          * half word of the flags
 317                          */
 318 #define FLAGS2IDX(f) ((f & 0xf) | ((f >> 12) & 0xf0))
 319                         sflags = p->fts_statp->st_flags;
 320                         if (FLAGS2IDX(sflags) < MAXFLAGS &&
 321                             ++f[FLAGS2IDX(sflags)] > maxflags) {
 322                                 saveflags = sflags;
 323                                 maxflags = f[FLAGS2IDX(sflags)];
 324                         }
 325                 }
 326         }
 327         /*
 328          * If the /set record is the same as the last one we do not need to output
 329          * a new one.  So first we check to see if anything changed.  Note that we
 330          * always output a /set record for the first directory.
 331          */
 332         if ((((keys & F_UNAME) | (keys & F_UID)) && (*puid != saveuid)) ||
 333             (((keys & F_GNAME) | (keys & F_GID)) && (*pgid != savegid)) ||
 334             ((keys & F_MODE) && (*pmode != savemode)) ||
 335             ((keys & F_FLAGS) && (*pflags != saveflags)) ||
 336             (first)) {
 337                 first = 0;
 338                 if (dflag)
 339                         printf("/set type=dir");
 340                 else
 341                         printf("/set type=file");
 342                 if (keys & F_UNAME) {
 343                         if ((pw = getpwuid(saveuid)) != NULL)
 344                                 printf(" uname=%s", pw->pw_name);
 345                         else
 346                                 errx(1,
 347                                 "line %d: could not get uname for uid=%u",
 348                                 lineno, saveuid);
 349                 }
 350                 if (keys & F_UID)
 351                         printf(" uid=%lu", (u_long)saveuid);
 352                 if (keys & F_GNAME) {
 353                         if ((gr = getgrgid(savegid)) != NULL)
 354                                 printf(" gname=%s", gr->gr_name);
 355                         else
 356                                 errx(1,
 357                                 "line %d: could not get gname for gid=%u",
 358                                 lineno, savegid);
 359                 }
 360                 if (keys & F_GID)
 361                         printf(" gid=%lu", (u_long)savegid);
 362                 if (keys & F_MODE)
 363                         printf(" mode=%#o", savemode);
 364                 if (keys & F_NLINK)
 365                         printf(" nlink=1");
 366                 if (keys & F_FLAGS) {
 367                         fflags = flags_to_string(saveflags);
 368                         printf(" flags=%s", fflags);
 369                         free(fflags);
 370                 }
 371                 printf("\n");
 372                 *puid = saveuid;
 373                 *pgid = savegid;
 374                 *pmode = savemode;
 375                 *pflags = saveflags;
 376         }
 377         return (0);
 378 }
 379
 380 static int
 381 dsort(const FTSENT * const *a, const FTSENT * const *b)
 382 {
 383
 384         if (S_ISDIR((*a)->fts_statp->st_mode)) {
 385                 if (!S_ISDIR((*b)->fts_statp->st_mode))
 386                         return (1);
 387         } else if (S_ISDIR((*b)->fts_statp->st_mode))
 388                 return (-1);
 389         return (strcmp((*a)->fts_name, (*b)->fts_name));
 390 }
 391
 392 void
 393 output(int indent, int *offset, const char *fmt, ...)
 394 {
 395         va_list ap;
 396         char buf[1024];
 397
 398         va_start(ap, fmt);
 399         vsnprintf(buf, sizeof(buf), fmt, ap);
 400         va_end(ap);
 401
 402         if (*offset + strlen(buf) > MAXLINELEN - 3) {
 403                 printf(" \\\n%*s", INDENTNAMELEN + indent, "");
 404                 *offset = INDENTNAMELEN + indent;
 405         }
 406         *offset += printf(" %s", buf) + 1;
 407 }