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 extern long int crc_total;
  68 extern int ftsoptions;
  69 extern int dflag, iflag, nflag, sflag;
  70 extern u_int keys;
  71 extern char fullpath[MAXPATHLEN];
  72 extern int lineno;
  73
  74 static gid_t gid;
  75 static uid_t uid;
  76 static mode_t mode;
  77 static u_long flags = 0xffffffff;
  78
  79 static int      dsort(const FTSENT **, const FTSENT **);
  80 static void     output(int, int *, const char *, ...);
  81 static int      statd(FTS *, FTSENT *, uid_t *, gid_t *, mode_t *,
  82                            u_long *);
  83 static void     statf(int, FTSENT *);
  84
  85 void
  86 cwalk(void)
  87 {
  88         FTS *t;
  89         FTSENT *p;
  90         time_t clock;
  91         char *argv[2], host[MAXHOSTNAMELEN];
  92         int indent = 0;
  93
  94         time(&clock);
  95         gethostname(host, sizeof(host));
  96         printf(
  97             "#\t   user: %s\n#\tmachine: %s\n#\t   tree: %s\n#\t   date: %s",
  98             getlogin(), host, fullpath, ctime(&clock));
  99
 100         argv[0] = ".";
 101         argv[1] = NULL;
 102         if ((t = fts_open(argv, ftsoptions, dsort)) == NULL)
 103                 err(1, "line %d: fts_open", lineno);
 104         while ((p = fts_read(t))) {
 105                 if (iflag)
 106                         indent = p->fts_level * 4;
 107                 if (check_excludes(p->fts_name, p->fts_path)) {
 108                         fts_set(t, p, FTS_SKIP);
 109                         continue;
 110                 }
 111                 switch(p->fts_info) {
 112                 case FTS_D:
 113                         if (!dflag)
 114                                 printf("\n");
 115                         if (!nflag)
 116                                 printf("# %s\n", p->fts_path);
 117                         statd(t, p, &uid, &gid, &mode, &flags);
 118                         statf(indent, p);
 119                         break;
 120                 case FTS_DP:
 121                         if (!nflag && (p->fts_level > 0))
 122                                 printf("%*s# %s\n", indent, "", p->fts_path);
 123                         printf("%*s..\n", indent, "");
 124                         if (!dflag)
 125                                 printf("\n");
 126                         break;
 127                 case FTS_DNR:
 128                 case FTS_ERR:
 129                 case FTS_NS:
 130                         warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
 131                         break;
 132                 default:
 133                         if (!dflag)
 134                                 statf(indent, p);
 135                         break;
 136
 137                 }
 138         }
 139         fts_close(t);
 140         if (sflag && keys & F_CKSUM)
 141                 warnx("%s checksum: %lu", fullpath, crc_total);
 142 }
 143
 144 static void
 145 statf(int indent, FTSENT *p)
 146 {
 147         struct group *gr;
 148         struct passwd *pw;
 149         u_long len, val;
 150         int fd, offset;
 151         char *fflags;
 152         char *escaped_name;
 153
 154         escaped_name = calloc(1, p->fts_namelen * 4  +  1);
 155         if (escaped_name == NULL)
 156                 errx(1, "statf(): calloc() failed");
 157         strvis(escaped_name, p->fts_name, VIS_WHITE | VIS_OCTAL);
 158
 159         if (iflag || S_ISDIR(p->fts_statp->st_mode))
 160                 offset = printf("%*s%s", indent, "", escaped_name);
 161         else
 162                 offset = printf("%*s    %s", indent, "", escaped_name);
 163
 164         free(escaped_name);
 165
 166         if (offset > (INDENTNAMELEN + indent))
 167                 offset = MAXLINELEN;
 168         else
 169                 offset += printf("%*s", (INDENTNAMELEN + indent) - offset, "");
 170
 171         if (!S_ISREG(p->fts_statp->st_mode) && !dflag)
 172                 output(indent, &offset, "type=%s", inotype(p->fts_statp->st_mode));
 173         if (p->fts_statp->st_uid != uid) {
 174                 if (keys & F_UNAME) {
 175                         if ((pw = getpwuid(p->fts_statp->st_uid)) != NULL) {
 176                                 output(indent, &offset, "uname=%s", pw->pw_name);
 177                         } else {
 178                                 errx(1,
 179                                 "line %d: could not get uname for uid=%u",
 180                                 lineno, p->fts_statp->st_uid);
 181                         }
 182                 }
 183                 if (keys & F_UID)
 184                         output(indent, &offset, "uid=%u", p->fts_statp->st_uid);
 185         }
 186         if (p->fts_statp->st_gid != gid) {
 187                 if (keys & F_GNAME) {
 188                         if ((gr = getgrgid(p->fts_statp->st_gid)) != NULL) {
 189                                 output(indent, &offset, "gname=%s", gr->gr_name);
 190                         } else {
 191                                 errx(1,
 192                                 "line %d: could not get gname for gid=%u",
 193                                 lineno, p->fts_statp->st_gid);
 194                         }
 195                 }
 196                 if (keys & F_GID)
 197                         output(indent, &offset, "gid=%u", p->fts_statp->st_gid);
 198         }
 199         if (keys & F_MODE && (p->fts_statp->st_mode & MBITS) != mode)
 200                 output(indent, &offset, "mode=%#o", p->fts_statp->st_mode & MBITS);
 201         if (keys & F_NLINK && p->fts_statp->st_nlink != 1)
 202                 output(indent, &offset, "nlink=%u", p->fts_statp->st_nlink);
 203         if (keys & F_SIZE)
 204                 output(indent, &offset, "size=%qd", p->fts_statp->st_size);
 205         if (keys & F_TIME)
 206                 output(indent, &offset, "time=%ld.%ld",
 207                     p->fts_statp->st_mtimespec.tv_sec,
 208                     p->fts_statp->st_mtimespec.tv_nsec);
 209         if (keys & F_CKSUM && S_ISREG(p->fts_statp->st_mode)) {
 210                 if ((fd = open(p->fts_accpath, O_RDONLY, 0)) < 0 ||
 211                     crc(fd, &val, &len))
 212                         err(1, "line %d: %s", lineno, p->fts_accpath);
 213                 close(fd);
 214                 output(indent, &offset, "cksum=%lu", val);
 215         }
 216 #ifdef MD5
 217         if (keys & F_MD5 && S_ISREG(p->fts_statp->st_mode)) {
 218                 char *digest, buf[33];
 219
 220                 digest = MD5File(p->fts_accpath, buf);
 221                 if (!digest) {
 222                         err(1, "line %d: %s", lineno, p->fts_accpath);
 223                 } else {
 224                         output(indent, &offset, "md5digest=%s", digest);
 225                 }
 226         }
 227 #endif /* MD5 */
 228 #ifdef SHA1
 229         if (keys & F_SHA1 && S_ISREG(p->fts_statp->st_mode)) {
 230                 char *digest, buf[41];
 231
 232                 digest = SHA1_File(p->fts_accpath, buf);
 233                 if (!digest) {
 234                         err(1, "line %d: %s", lineno, p->fts_accpath);
 235                 } else {
 236                         output(indent, &offset, "sha1digest=%s", digest);
 237                 }
 238         }
 239 #endif /* SHA1 */
 240 #ifdef RMD160
 241         if (keys & F_RMD160 && S_ISREG(p->fts_statp->st_mode)) {
 242                 char *digest, buf[41];
 243
 244                 digest = RIPEMD160_File(p->fts_accpath, buf);
 245                 if (!digest) {
 246                         err(1, "line %d: %s", lineno, p->fts_accpath);
 247                 } else {
 248                         output(indent, &offset, "ripemd160digest=%s", digest);
 249                 }
 250         }
 251 #endif /* RMD160 */
 252         if (keys & F_SLINK &&
 253             (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE))
 254                 output(indent, &offset, "link=%s", rlink(p->fts_accpath));
 255         if (keys & F_FLAGS && p->fts_statp->st_flags != flags) {
 256                 fflags = flags_to_string(p->fts_statp->st_flags);
 257                 output(indent, &offset, "flags=%s", fflags);
 258                 free(fflags);
 259         }
 260         putchar('\n');
 261 }
 262
 263 #define MAXGID  5000
 264 #define MAXUID  5000
 265 #define MAXMODE MBITS + 1
 266 #define MAXFLAGS 256
 267 #define MAXS 16
 268
 269 static int
 270 statd(FTS *t, FTSENT *parent, uid_t *puid, gid_t *pgid, mode_t *pmode,
 271       u_long *pflags)
 272 {
 273         FTSENT *p;
 274         gid_t sgid;
 275         uid_t suid;
 276         mode_t smode;
 277         u_long sflags;
 278         struct group *gr;
 279         struct passwd *pw;
 280         gid_t savegid = *pgid;
 281         uid_t saveuid = *puid;
 282         mode_t savemode = *pmode;
 283         u_long saveflags = *pflags;
 284         u_short maxgid, maxuid, maxmode, maxflags;
 285         u_short g[MAXGID], u[MAXUID], m[MAXMODE], f[MAXFLAGS];
 286         char *fflags;
 287         static int first = 1;
 288
 289         if ((p = fts_children(t, 0)) == NULL) {
 290                 if (errno)
 291                         err(1, "line %d: %s", lineno, RP(parent));
 292                 return (1);
 293         }
 294
 295         bzero(g, sizeof(g));
 296         bzero(u, sizeof(u));
 297         bzero(m, sizeof(m));
 298         bzero(f, sizeof(f));
 299
 300         maxuid = maxgid = maxmode = maxflags = 0;
 301         for (; p; p = p->fts_link) {
 302                 if (!dflag || (dflag && S_ISDIR(p->fts_statp->st_mode))) {
 303                         smode = p->fts_statp->st_mode & MBITS;
 304                         if (smode < MAXMODE && ++m[smode] > maxmode) {
 305                                 savemode = smode;
 306                                 maxmode = m[smode];
 307                         }
 308                         sgid = p->fts_statp->st_gid;
 309                         if (sgid < MAXGID && ++g[sgid] > maxgid) {
 310                                 savegid = sgid;
 311                                 maxgid = g[sgid];
 312                         }
 313                         suid = p->fts_statp->st_uid;
 314                         if (suid < MAXUID && ++u[suid] > maxuid) {
 315                                 saveuid = suid;
 316                                 maxuid = u[suid];
 317                         }
 318
 319                         /*
 320                          * XXX
 321                          * note that the below will break when file flags
 322                          * are extended beyond the first 4 bytes of each
 323                          * half word of the flags
 324                          */
 325 #define FLAGS2IDX(f) ((f & 0xf) | ((f >> 12) & 0xf0))
 326                         sflags = p->fts_statp->st_flags;
 327                         if (FLAGS2IDX(sflags) < MAXFLAGS &&
 328                             ++f[FLAGS2IDX(sflags)] > maxflags) {
 329                                 saveflags = sflags;
 330                                 maxflags = f[FLAGS2IDX(sflags)];
 331                         }
 332                 }
 333         }
 334         /*
 335          * If the /set record is the same as the last one we do not need to output
 336          * a new one.  So first we check to see if anything changed.  Note that we
 337          * always output a /set record for the first directory.
 338          */
 339         if ((((keys & F_UNAME) | (keys & F_UID)) && (*puid != saveuid)) ||
 340             (((keys & F_GNAME) | (keys & F_GID)) && (*pgid != savegid)) ||
 341             ((keys & F_MODE) && (*pmode != savemode)) ||
 342             ((keys & F_FLAGS) && (*pflags != saveflags)) ||
 343             (first)) {
 344                 first = 0;
 345                 if (dflag)
 346                         printf("/set type=dir");
 347                 else
 348                         printf("/set type=file");
 349                 if (keys & F_UNAME) {
 350                         if ((pw = getpwuid(saveuid)) != NULL)
 351                                 printf(" uname=%s", pw->pw_name);
 352                         else
 353                                 errx(1,
 354                                 "line %d: could not get uname for uid=%u",
 355                                 lineno, saveuid);
 356                 }
 357                 if (keys & F_UID)
 358                         printf(" uid=%lu", (u_long)saveuid);
 359                 if (keys & F_GNAME) {
 360                         if ((gr = getgrgid(savegid)) != NULL)
 361                                 printf(" gname=%s", gr->gr_name);
 362                         else
 363                                 errx(1,
 364                                 "line %d: could not get gname for gid=%u",
 365                                 lineno, savegid);
 366                 }
 367                 if (keys & F_GID)
 368                         printf(" gid=%lu", (u_long)savegid);
 369                 if (keys & F_MODE)
 370                         printf(" mode=%#o", savemode);
 371                 if (keys & F_NLINK)
 372                         printf(" nlink=1");
 373                 if (keys & F_FLAGS) {
 374                         fflags = flags_to_string(saveflags);
 375                         printf(" flags=%s", fflags);
 376                         free(fflags);
 377                 }
 378                 printf("\n");
 379                 *puid = saveuid;
 380                 *pgid = savegid;
 381                 *pmode = savemode;
 382                 *pflags = saveflags;
 383         }
 384         return (0);
 385 }
 386
 387 static int
 388 dsort(const FTSENT **a, const FTSENT **b)
 389 {
 390
 391         if (S_ISDIR((*a)->fts_statp->st_mode)) {
 392                 if (!S_ISDIR((*b)->fts_statp->st_mode))
 393                         return (1);
 394         } else if (S_ISDIR((*b)->fts_statp->st_mode))
 395                 return (-1);
 396         return (strcmp((*a)->fts_name, (*b)->fts_name));
 397 }
 398
 399 void
 400 output(int indent, int *offset, const char *fmt, ...)
 401 {
 402         va_list ap;
 403         char buf[1024];
 404
 405         va_start(ap, fmt);
 406         vsnprintf(buf, sizeof(buf), fmt, ap);
 407         va_end(ap);
 408
 409         if (*offset + strlen(buf) > MAXLINELEN - 3) {
 410                 printf(" \\\n%*s", INDENTNAMELEN + indent, "");
 411                 *offset = INDENTNAMELEN + indent;
 412         }
 413         *offset += printf(" %s", buf) + 1;
 414 }