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
  30 #if 0
  31 #ifndef lint
  32 static char sccsid[] = "@(#)create.c    8.1 (Berkeley) 6/6/93";
  33 #endif /* not lint */
  34 #endif
  35 #include <sys/cdefs.h>
  36 __FBSDID("$FreeBSD: src/usr.sbin/mtree/create.c,v 1.37 2005/03/29 11:44:17 tobez Exp $");
  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 #ifndef __APPLE__
  47 #ifdef ENABLE_MD5
  48 #include <md5.h>
  49 #endif
  50 #ifdef ENABLE_SHA1
  51 #include <sha.h>
  52 #endif
  53 #ifdef ENABLE_RMD160
  54 #include <ripemd.h>
  55 #endif
  56 #ifdef ENABLE_SHA256
  57 #include <sha256.h>
  58 #endif
  59 #endif /* !__APPLE__ */
  60 #include <pwd.h>
  61 #include <stdint.h>
  62 #include <stdio.h>
  63 #include <time.h>
  64 #include <unistd.h>
  65 #include <vis.h>
  66 #include "mtree.h"
  67 #include "extern.h"
  68
  69 #ifdef __APPLE__
  70 #include "commoncrypto.h"
  71 #endif /* __APPLE__ */
  72
  73 #define INDENTNAMELEN   15
  74 #define MAXLINELEN      80
  75
  76 static gid_t gid;
  77 static uid_t uid;
  78 static mode_t mode;
  79 static u_long flags = 0xffffffff;
  80
  81 static int      dsort(const FTSENT **, const FTSENT **);
  82 static void     output(int, int *, const char *, ...) __printflike(3, 4);
  83 static int      statd(FTS *, FTSENT *, uid_t *, gid_t *, mode_t *, u_long *);
  84 static void     statf(int, FTSENT *);
  85
  86 void
  87 cwalk(void)
  88 {
  89         FTS *t;
  90         FTSENT *p;
  91         time_t cl;
  92         char *argv[2], host[MAXHOSTNAMELEN];
  93         char dot[] = ".";
  94         int indent = 0;
  95
  96         if (!nflag) {
  97                 (void)time(&cl);
  98                 (void)gethostname(host, sizeof(host));
  99                 (void)printf(
 100                     "#\t   user: %s\n#\tmachine: %s\n",
 101                     getlogin(), host);
 102                 (void)printf(
 103                     "#\t   tree: %s\n#\t   date: %s",
 104                     fullpath, ctime(&cl));
 105         }
 106
 107         argv[0] = dot;
 108         argv[1] = NULL;
 109         if ((t = fts_open(argv, ftsoptions, dsort)) == NULL)
 110                 err(1, "fts_open()");
 111         while ((p = fts_read(t))) {
 112                 if (iflag)
 113                         indent = p->fts_level * 4;
 114                 if (check_excludes(p->fts_name, p->fts_path)) {
 115                         fts_set(t, p, FTS_SKIP);
 116                         continue;
 117                 }
 118                 switch(p->fts_info) {
 119                 case FTS_D:
 120                         if (!dflag)
 121                                 (void)printf("\n");
 122                         if (!nflag)
 123                                 (void)printf("# %s\n", p->fts_path);
 124                         statd(t, p, &uid, &gid, &mode, &flags);
 125                         statf(indent, p);
 126                         break;
 127                 case FTS_DP:
 128                         if (!nflag && (p->fts_level > 0))
 129                                 (void)printf("%*s# %s\n", indent, "", p->fts_path);
 130                         (void)printf("%*s..\n", indent, "");
 131                         if (!dflag)
 132                                 (void)printf("\n");
 133                         break;
 134                 case FTS_DNR:
 135                 case FTS_ERR:
 136                 case FTS_NS:
 137                         warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
 138                         break;
 139                 default:
 140                         if (!dflag)
 141                                 statf(indent, p);
 142                         break;
 143
 144                 }
 145         }
 146         (void)fts_close(t);
 147         if (sflag && keys & F_CKSUM)
 148                 warnx("%s checksum: %lu", fullpath, (unsigned long)crc_total);
 149 }
 150
 151 static void
 152 statf(int indent, FTSENT *p)
 153 {
 154         struct group *gr;
 155         struct passwd *pw;
 156         uint32_t val;
 157         off_t len;
 158         int fd, offset;
 159         char *fflags;
 160         char *escaped_name;
 161
 162         escaped_name = calloc(1, p->fts_namelen * 4  +  1);
 163         if (escaped_name == NULL)
 164                 errx(1, "statf(): calloc() failed");
 165         strvis(escaped_name, p->fts_name, VIS_WHITE | VIS_OCTAL | VIS_GLOB);
 166
 167         if (iflag || S_ISDIR(p->fts_statp->st_mode))
 168                 offset = printf("%*s%s", indent, "", escaped_name);
 169         else
 170                 offset = printf("%*s    %s", indent, "", escaped_name);
 171
 172         free(escaped_name);
 173
 174         if (offset > (INDENTNAMELEN + indent))
 175                 offset = MAXLINELEN;
 176         else
 177                 offset += printf("%*s", (INDENTNAMELEN + indent) - offset, "");
 178
 179         if (!S_ISREG(p->fts_statp->st_mode) && !dflag)
 180                 output(indent, &offset, "type=%s", inotype(p->fts_statp->st_mode));
 181         if (p->fts_statp->st_uid != uid) {
 182                 if (keys & F_UNAME) {
 183                         pw = getpwuid(p->fts_statp->st_uid);
 184                         if (pw != NULL)
 185                                 output(indent, &offset, "uname=%s", pw->pw_name);
 186                         else if (wflag)
 187                                 warnx("Could not get uname for uid=%u",
 188                                     p->fts_statp->st_uid);
 189                         else
 190                                 errx(1,
 191                                     "Could not get uname for uid=%u",
 192                                     p->fts_statp->st_uid);
 193                 }
 194                 if (keys & F_UID)
 195                         output(indent, &offset, "uid=%u", p->fts_statp->st_uid);
 196         }
 197         if (p->fts_statp->st_gid != gid) {
 198                 if (keys & F_GNAME) {
 199                         gr = getgrgid(p->fts_statp->st_gid);
 200                         if (gr != NULL)
 201                                 output(indent, &offset, "gname=%s", gr->gr_name);
 202                         else if (wflag)
 203                                 warnx("Could not get gname for gid=%u",
 204                                     p->fts_statp->st_gid);
 205                         else
 206                                 errx(1,
 207                                     "Could not get gname for gid=%u",
 208                                     p->fts_statp->st_gid);
 209                 }
 210                 if (keys & F_GID)
 211                         output(indent, &offset, "gid=%u", p->fts_statp->st_gid);
 212         }
 213         if (keys & F_MODE && (p->fts_statp->st_mode & MBITS) != mode)
 214                 output(indent, &offset, "mode=%#o", p->fts_statp->st_mode & MBITS);
 215         if (keys & F_NLINK && p->fts_statp->st_nlink != 1)
 216                 output(indent, &offset, "nlink=%u", p->fts_statp->st_nlink);
 217         if (keys & F_SIZE)
 218                 output(indent, &offset, "size=%jd",
 219                     (intmax_t)p->fts_statp->st_size);
 220         if (keys & F_TIME)
 221                 output(indent, &offset, "time=%ld.%ld",
 222                     (long)p->fts_statp->st_mtimespec.tv_sec,
 223                     p->fts_statp->st_mtimespec.tv_nsec);
 224         if (keys & F_CKSUM && S_ISREG(p->fts_statp->st_mode)) {
 225                 if ((fd = open(p->fts_accpath, O_RDONLY, 0)) < 0 ||
 226                     crc(fd, &val, &len))
 227                         err(1, "%s", p->fts_accpath);
 228                 (void)close(fd);
 229                 output(indent, &offset, "cksum=%lu", (unsigned long)val);
 230         }
 231 #ifdef ENABLE_MD5
 232         if (keys & F_MD5 && S_ISREG(p->fts_statp->st_mode)) {
 233                 char *digest, buf[33];
 234
 235                 digest = MD5File(p->fts_accpath, buf);
 236                 if (!digest)
 237                         err(1, "%s", p->fts_accpath);
 238                 output(indent, &offset, "md5digest=%s", digest);
 239         }
 240 #endif /* ENABLE_MD5 */
 241 #ifdef ENABLE_SHA1
 242         if (keys & F_SHA1 && S_ISREG(p->fts_statp->st_mode)) {
 243                 char *digest, buf[41];
 244
 245                 digest = SHA1_File(p->fts_accpath, buf);
 246                 if (!digest)
 247                         err(1, "%s", p->fts_accpath);
 248                 output(indent, &offset, "sha1digest=%s", digest);
 249         }
 250 #endif /* ENABLE_SHA1 */
 251 #ifdef ENABLE_RMD160
 252         if (keys & F_RMD160 && S_ISREG(p->fts_statp->st_mode)) {
 253                 char *digest, buf[41];
 254
 255                 digest = RIPEMD160_File(p->fts_accpath, buf);
 256                 if (!digest)
 257                         err(1, "%s", p->fts_accpath);
 258                 output(indent, &offset, "ripemd160digest=%s", digest);
 259         }
 260 #endif /* ENABLE_RMD160 */
 261 #ifdef ENABLE_SHA256
 262         if (keys & F_SHA256 && S_ISREG(p->fts_statp->st_mode)) {
 263                 char *digest, buf[65];
 264
 265                 digest = SHA256_File(p->fts_accpath, buf);
 266                 if (!digest)
 267                         err(1, "%s", p->fts_accpath);
 268                 output(indent, &offset, "sha256digest=%s", digest);
 269         }
 270 #endif /* ENABLE_SHA256 */
 271         if (keys & F_SLINK &&
 272             (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE)) {
 273                 char visbuf[MAXPATHLEN * 4];
 274                 char *s = rlink(p->fts_accpath);
 275                 strvis(visbuf, s, VIS_WHITE | VIS_OCTAL);
 276                 output(indent, &offset, "link=%s", visbuf);
 277         }
 278         if (keys & F_FLAGS && p->fts_statp->st_flags != flags) {
 279                 fflags = flags_to_string(p->fts_statp->st_flags);
 280                 output(indent, &offset, "flags=%s", fflags);
 281                 free(fflags);
 282         }
 283         (void)putchar('\n');
 284 }
 285
 286 #define MAXGID  5000
 287 #define MAXUID  5000
 288 #define MAXMODE MBITS + 1
 289 #define MAXFLAGS 256
 290 #define MAXS 16
 291
 292 static int
 293 statd(FTS *t, FTSENT *parent, uid_t *puid, gid_t *pgid, mode_t *pmode, u_long *pflags)
 294 {
 295         FTSENT *p;
 296         gid_t sgid;
 297         uid_t suid;
 298         mode_t smode;
 299         u_long sflags;
 300         struct group *gr;
 301         struct passwd *pw;
 302         gid_t savegid = *pgid;
 303         uid_t saveuid = *puid;
 304         mode_t savemode = *pmode;
 305         u_long saveflags = *pflags;
 306         u_short maxgid, maxuid, maxmode, maxflags;
 307         u_short g[MAXGID], u[MAXUID], m[MAXMODE], f[MAXFLAGS];
 308         char *fflags;
 309         static int first = 1;
 310
 311         if ((p = fts_children(t, 0)) == NULL) {
 312                 if (errno)
 313                         err(1, "%s", RP(parent));
 314                 return (1);
 315         }
 316
 317         bzero(g, sizeof(g));
 318         bzero(u, sizeof(u));
 319         bzero(m, sizeof(m));
 320         bzero(f, sizeof(f));
 321
 322         maxuid = maxgid = maxmode = maxflags = 0;
 323         for (; p; p = p->fts_link) {
 324                 if (!dflag || (dflag && S_ISDIR(p->fts_statp->st_mode))) {
 325                         smode = p->fts_statp->st_mode & MBITS;
 326                         if (smode < MAXMODE && ++m[smode] > maxmode) {
 327                                 savemode = smode;
 328                                 maxmode = m[smode];
 329                         }
 330                         sgid = p->fts_statp->st_gid;
 331                         if (sgid < MAXGID && ++g[sgid] > maxgid) {
 332                                 savegid = sgid;
 333                                 maxgid = g[sgid];
 334                         }
 335                         suid = p->fts_statp->st_uid;
 336                         if (suid < MAXUID && ++u[suid] > maxuid) {
 337                                 saveuid = suid;
 338                                 maxuid = u[suid];
 339                         }
 340
 341                         /*
 342                          * XXX
 343                          * note that the below will break when file flags
 344                          * are extended beyond the first 4 bytes of each
 345                          * half word of the flags
 346                          */
 347 #define FLAGS2IDX(f) ((f & 0xf) | ((f >> 12) & 0xf0))
 348                         sflags = p->fts_statp->st_flags;
 349                         if (FLAGS2IDX(sflags) < MAXFLAGS &&
 350                             ++f[FLAGS2IDX(sflags)] > maxflags) {
 351                                 saveflags = sflags;
 352                                 maxflags = f[FLAGS2IDX(sflags)];
 353                         }
 354                 }
 355         }
 356         /*
 357          * If the /set record is the same as the last one we do not need to output
 358          * a new one.  So first we check to see if anything changed.  Note that we
 359          * always output a /set record for the first directory.
 360          */
 361         if ((((keys & F_UNAME) | (keys & F_UID)) && (*puid != saveuid)) ||
 362             (((keys & F_GNAME) | (keys & F_GID)) && (*pgid != savegid)) ||
 363             ((keys & F_MODE) && (*pmode != savemode)) ||
 364             ((keys & F_FLAGS) && (*pflags != saveflags)) ||
 365             (first)) {
 366                 first = 0;
 367                 if (dflag)
 368                         (void)printf("/set type=dir");
 369                 else
 370                         (void)printf("/set type=file");
 371                 if (keys & F_UNAME) {
 372                         pw = getpwuid(saveuid);
 373                         if (pw != NULL)
 374                                 (void)printf(" uname=%s", pw->pw_name);
 375                         else if (wflag)
 376                                 warnx( "Could not get uname for uid=%u", saveuid);
 377                         else
 378                                 errx(1, "Could not get uname for uid=%u", saveuid);
 379                 }
 380                 if (keys & F_UID)
 381                         (void)printf(" uid=%lu", (u_long)saveuid);
 382                 if (keys & F_GNAME) {
 383                         gr = getgrgid(savegid);
 384                         if (gr != NULL)
 385                                 (void)printf(" gname=%s", gr->gr_name);
 386                         else if (wflag)
 387                                 warnx("Could not get gname for gid=%u", savegid);
 388                         else
 389                                 errx(1, "Could not get gname for gid=%u", savegid);
 390                 }
 391                 if (keys & F_GID)
 392                         (void)printf(" gid=%lu", (u_long)savegid);
 393                 if (keys & F_MODE)
 394                         (void)printf(" mode=%#o", savemode);
 395                 if (keys & F_NLINK)
 396                         (void)printf(" nlink=1");
 397                 if (keys & F_FLAGS) {
 398                         fflags = flags_to_string(saveflags);
 399                         (void)printf(" flags=%s", fflags);
 400                         free(fflags);
 401                 }
 402                 (void)printf("\n");
 403                 *puid = saveuid;
 404                 *pgid = savegid;
 405                 *pmode = savemode;
 406                 *pflags = saveflags;
 407         }
 408         return (0);
 409 }
 410
 411 static int
 412 dsort(const FTSENT **a, const FTSENT **b)
 413 {
 414         if (S_ISDIR((*a)->fts_statp->st_mode)) {
 415                 if (!S_ISDIR((*b)->fts_statp->st_mode))
 416                         return (1);
 417         } else if (S_ISDIR((*b)->fts_statp->st_mode))
 418                 return (-1);
 419         return (strcmp((*a)->fts_name, (*b)->fts_name));
 420 }
 421
 422 #include <stdarg.h>
 423
 424 void
 425 output(int indent, int *offset, const char *fmt, ...)
 426 {
 427         va_list ap;
 428         char buf[1024];
 429         va_start(ap, fmt);
 430         (void)vsnprintf(buf, sizeof(buf), fmt, ap);
 431         va_end(ap);
 432
 433         if (*offset + strlen(buf) > MAXLINELEN - 3) {
 434                 (void)printf(" \\\n%*s", INDENTNAMELEN + indent, "");
 435                 *offset = INDENTNAMELEN + indent;
 436         }
 437         *offset += printf(" %s", buf) + 1;
 438 }