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