1 /* @(#)create.c 8.1 (Berkeley) 6/6/93 */
2 /* $NetBSD: create.c,v 1.76 2018/11/18 23:03:36 sevan Exp $ */
3
4 /*-
5 * Copyright (c) 1989, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33 #include <sys/param.h>
34 #include <sys/stat.h>
35
36 #include <dirent.h>
37 #include <errno.h>
38 #include <fcntl.h>
39 #include <grp.h>
40 #include <pwd.h>
41 #include <stdio.h>
42 #include <stdarg.h>
43 #include <stdint.h>
44 #include <stdlib.h>
45 #include <string.h>
46 #include <time.h>
47 #include <unistd.h>
48
49 #ifndef NO_MD5
50 #include <openssl/md5.h>
51 #endif
52 #ifndef NO_RMD160
53 #include <openssl/ripemd.h>
54 #endif
55 #ifndef NO_SHA
56 #include <openssl/sha.h>
57 #endif
58
59 #include "extern.h"
60
61 #define INDENTNAMELEN 15
62 #define MAXLINELEN 80
63
64 static gid_t gid;
65 static uid_t uid;
66 static mode_t mode;
67 static u_long flags;
68
69 #if defined(__FreeBSD__) || defined(__DragonFly__)
70 #define FTS_CONST const
71 #else
72 #define FTS_CONST
73 #endif
74
75 static int dcmp(const FTSENT *FTS_CONST *, const FTSENT *FTS_CONST *);
76 static void output(FILE *, int, int *, const char *, ...)
77 __printflike(4, 5);
78 static int statd(FILE *, FTS *, FTSENT *, uid_t *, gid_t *, mode_t *,
79 u_long *);
80 static void statf(FILE *, int, FTSENT *);
81
82 void
cwalk(FILE * fp)83 cwalk(FILE *fp)
84 {
85 FTS *t;
86 FTSENT *p;
87 time_t clocktime;
88 char host[MAXHOSTNAMELEN + 1];
89 const char *user;
90 char *argv[2];
91 char dot[] = ".";
92 int indent = 0;
93
94 argv[0] = dot;
95 argv[1] = NULL;
96
97 time(&clocktime);
98 gethostname(host, sizeof(host));
99 host[sizeof(host) - 1] = '\0';
100 if ((user = getlogin()) == NULL) {
101 struct passwd *pw;
102 user = (pw = getpwuid(getuid())) != NULL ? pw->pw_name :
103 "<unknown>";
104 }
105
106 if (!nflag)
107 fprintf(fp,
108 "#\t user: %s\n#\tmachine: %s\n#\t tree: %s\n"
109 "#\t date: %s",
110 user, host, fullpath, ctime(&clocktime));
111
112 if ((t = fts_open(argv, ftsoptions, dcmp)) == NULL)
113 mtree_err("fts_open: %s", strerror(errno));
114 while ((p = fts_read(t)) != NULL) {
115 if (jflag)
116 indent = p->fts_level * 4;
117 if (check_excludes(p->fts_name, p->fts_path)) {
118 fts_set(t, p, FTS_SKIP);
119 continue;
120 }
121 if (!find_only(p->fts_path)) {
122 fts_set(t, p, FTS_SKIP);
123 continue;
124 }
125 switch(p->fts_info) {
126 case FTS_D:
127 if (!bflag)
128 fprintf(fp, "\n");
129 if (!nflag)
130 fprintf(fp, "# %s\n", p->fts_path);
131 statd(fp, t, p, &uid, &gid, &mode, &flags);
132 statf(fp, indent, p);
133 break;
134 case FTS_DP:
135 if (p->fts_level > 0)
136 if (!nflag)
137 fprintf(fp, "%*s# %s\n", indent, "",
138 p->fts_path);
139 if (p->fts_level > 0 || flavor == F_FREEBSD9) {
140 fprintf(fp, "%*s..\n", indent, "");
141 if (!bflag)
142 fprintf(fp, "\n");
143 }
144 break;
145 case FTS_DNR:
146 case FTS_ERR:
147 case FTS_NS:
148 mtree_err("%s: %s",
149 p->fts_path, strerror(p->fts_errno));
150 break;
151 default:
152 if (!dflag)
153 statf(fp, indent, p);
154 break;
155
156 }
157 }
158 fts_close(t);
159 if (sflag && keys & F_CKSUM)
160 mtree_err("%s checksum: %u", fullpath, crc_total);
161 }
162
163 static void
dosum(FILE * fp,int indent,FTSENT * p,int * offset,int flag,char * (* func)(const char *,char *),const char * key)164 dosum(FILE *fp, int indent, FTSENT *p, int *offset, int flag,
165 char * (*func)(const char *, char *), const char *key)
166 {
167 char *digestbuf = NULL;
168
169 if ((keys & flag) == 0)
170 return;
171
172 if (func)
173 digestbuf = (*func)(p->fts_accpath, NULL);
174 #if !defined(NO_MD5) && !defined(NO_RMD160) && !defined(NO_SHA)
175 else
176 digestbuf = dohash(flag, p->fts_accpath);
177 #endif
178 if (digestbuf != NULL) {
179 output(fp, indent, offset, "%s=%s", key, digestbuf);
180 free(digestbuf);
181 return;
182 }
183
184 if (qflag) {
185 warn("%s: %s failed", p->fts_path, key);
186 return;
187 }
188
189 mtree_err("%s: %s failed: %s", p->fts_path, key, strerror(errno));
190 }
191
192 static char *
crcFile(const char * fname,char * dummy __unused)193 crcFile(const char *fname, char *dummy __unused)
194 {
195 char *ptr;
196 uint32_t val, len;
197 int fd, e;
198
199 if ((fd = open(fname, O_RDONLY)) == -1)
200 goto out;
201
202 e = crc(fd, &val, &len);
203 close(fd);
204 if (e)
205 goto out;
206
207 if (asprintf(&ptr, "%u", val) < 0)
208 goto out;
209
210 return ptr;
211 out:
212 mtree_err("%s: %s", fname, strerror(errno));
213 return NULL;
214 }
215
216 static void
statf(FILE * fp,int indent,FTSENT * p)217 statf(FILE *fp, int indent, FTSENT *p)
218 {
219 int offset;
220 const char *name = NULL;
221
222 offset = fprintf(fp, "%*s%s%s", indent, "",
223 S_ISDIR(p->fts_statp->st_mode) ? "" : " ", vispath(p->fts_name));
224
225 if (offset > (INDENTNAMELEN + indent))
226 offset = MAXLINELEN;
227 else
228 offset += fprintf(fp, "%*s",
229 (INDENTNAMELEN + indent) - offset, "");
230
231 if (!S_ISREG(p->fts_statp->st_mode) && (flavor == F_NETBSD6 || !dflag))
232 output(fp, indent, &offset, "type=%s",
233 inotype(p->fts_statp->st_mode));
234 if (keys & (F_UID | F_UNAME) && p->fts_statp->st_uid != uid) {
235 if (keys & F_UNAME &&
236 (name = user_from_uid(p->fts_statp->st_uid, 1)) != NULL)
237 output(fp, indent, &offset, "uname=%s", name);
238 if (keys & F_UID || (keys & F_UNAME && name == NULL))
239 output(fp, indent, &offset, "uid=%u",
240 p->fts_statp->st_uid);
241 }
242 if (keys & (F_GID | F_GNAME) && p->fts_statp->st_gid != gid) {
243 if (keys & F_GNAME &&
244 (name = group_from_gid(p->fts_statp->st_gid, 1)) != NULL)
245 output(fp, indent, &offset, "gname=%s", name);
246 if (keys & F_GID || (keys & F_GNAME && name == NULL))
247 output(fp, indent, &offset, "gid=%u",
248 p->fts_statp->st_gid);
249 }
250 if (keys & F_MODE && (p->fts_statp->st_mode & MBITS) != mode)
251 output(fp, indent, &offset, "mode=%#o",
252 p->fts_statp->st_mode & MBITS);
253 if (keys & F_DEV &&
254 (S_ISBLK(p->fts_statp->st_mode) || S_ISCHR(p->fts_statp->st_mode)))
255 output(fp, indent, &offset, "device=%#jx",
256 (uintmax_t)p->fts_statp->st_rdev);
257 if (keys & F_NLINK && p->fts_statp->st_nlink != 1)
258 output(fp, indent, &offset, "nlink=%ju",
259 (uintmax_t)p->fts_statp->st_nlink);
260 if (keys & F_SIZE &&
261 (flavor == F_FREEBSD9 || S_ISREG(p->fts_statp->st_mode)))
262 output(fp, indent, &offset, "size=%ju",
263 (uintmax_t)p->fts_statp->st_size);
264 if (keys & F_TIME)
265 #if defined(BSD4_4)
266 output(fp, indent, &offset, "time=%jd.%09ld",
267 (intmax_t)p->fts_statp->st_mtimespec.tv_sec,
268 p->fts_statp->st_mtimespec.tv_nsec);
269 #else
270 output(fp, indent, &offset, "time=%jd.%09ld",
271 (intmax_t)p->fts_statp->st_mtime, (long)0);
272 #endif
273 if (S_ISREG(p->fts_statp->st_mode)) {
274 dosum(fp, indent, p, &offset, F_CKSUM, crcFile, "cksum");
275 #ifndef NO_MD5
276 dosum(fp, indent, p, &offset, F_MD5, NULL, MD5KEY);
277 #endif
278 #ifndef NO_RMD160
279 dosum(fp, indent, p, &offset, F_RMD160, NULL, RMD160KEY);
280 #endif
281 #ifndef NO_SHA
282 dosum(fp, indent, p, &offset, F_SHA1, NULL, SHA1KEY);
283 dosum(fp, indent, p, &offset, F_SHA256, NULL, SHA256KEY);
284 dosum(fp, indent, p, &offset, F_SHA384, NULL, SHA384KEY);
285 dosum(fp, indent, p, &offset, F_SHA512, NULL, SHA512KEY);
286 #endif
287 }
288 if (keys & F_SLINK &&
289 (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE))
290 output(fp, indent, &offset, "link=%s",
291 vispath(rlink(p->fts_accpath)));
292 #if HAVE_STRUCT_STAT_ST_FLAGS
293 if (keys & F_FLAGS && p->fts_statp->st_flags != flags) {
294 char *str = flags_to_string(p->fts_statp->st_flags, "none");
295 output(fp, indent, &offset, "flags=%s", str);
296 free(str);
297 }
298 #endif
299 putchar('\n');
300 }
301
302 /* XXX
303 * FLAGS2INDEX will fail once the user and system settable bits need more
304 * than one byte, respectively.
305 */
306 #define FLAGS2INDEX(x) (((x >> 8) & 0x0000ff00) | (x & 0x000000ff))
307
308 #define MTREE_MAXGID 5000
309 #define MTREE_MAXUID 5000
310 #define MTREE_MAXMODE (MBITS + 1)
311 #if HAVE_STRUCT_STAT_ST_FLAGS
312 #define MTREE_MAXFLAGS (FLAGS2INDEX(CH_MASK) + 1) /* 1808 */
313 #else
314 #define MTREE_MAXFLAGS 1
315 #endif
316 #define MTREE_MAXS 16
317
318 static int
statd(FILE * fp,FTS * t,FTSENT * parent,uid_t * puid,gid_t * pgid,mode_t * pmode,u_long * pflags)319 statd(FILE *fp, FTS *t, FTSENT *parent, uid_t *puid, gid_t *pgid, mode_t *pmode,
320 u_long *pflags)
321 {
322 FTSENT *p;
323 gid_t sgid;
324 uid_t suid;
325 mode_t smode;
326 #if HAVE_STRUCT_STAT_ST_FLAGS
327 u_long sflags = 0;
328 #endif
329 const char *name = NULL;
330 gid_t savegid;
331 uid_t saveuid;
332 mode_t savemode;
333 u_long saveflags;
334 u_short maxgid, maxuid, maxmode, maxflags;
335 u_short g[MTREE_MAXGID], u[MTREE_MAXUID],
336 m[MTREE_MAXMODE], f[MTREE_MAXFLAGS];
337 static int first = 1;
338
339 savegid = *pgid;
340 saveuid = *puid;
341 savemode = *pmode;
342 saveflags = *pflags;
343 if ((p = fts_children(t, 0)) == NULL) {
344 if (errno)
345 mtree_err("%s: %s", RP(parent), strerror(errno));
346 return (1);
347 }
348
349 memset(g, 0, sizeof(g));
350 memset(u, 0, sizeof(u));
351 memset(m, 0, sizeof(m));
352 memset(f, 0, sizeof(f));
353
354 maxuid = maxgid = maxmode = maxflags = 0;
355 for (; p; p = p->fts_link) {
356 if (flavor == F_NETBSD6 || !dflag ||
357 (dflag && S_ISDIR(p->fts_statp->st_mode))) {
358 smode = p->fts_statp->st_mode & MBITS;
359 if (smode < MTREE_MAXMODE && ++m[smode] > maxmode) {
360 savemode = smode;
361 maxmode = m[smode];
362 }
363 sgid = p->fts_statp->st_gid;
364 if (sgid < MTREE_MAXGID && ++g[sgid] > maxgid) {
365 savegid = sgid;
366 maxgid = g[sgid];
367 }
368 suid = p->fts_statp->st_uid;
369 if (suid < MTREE_MAXUID && ++u[suid] > maxuid) {
370 saveuid = suid;
371 maxuid = u[suid];
372 }
373
374 #if HAVE_STRUCT_STAT_ST_FLAGS
375 sflags = FLAGS2INDEX(p->fts_statp->st_flags);
376 if (sflags < MTREE_MAXFLAGS && ++f[sflags] > maxflags) {
377 saveflags = p->fts_statp->st_flags;
378 maxflags = f[sflags];
379 }
380 #endif
381 }
382 }
383 /*
384 * If the /set record is the same as the last one we do not need to
385 * output a new one. So first we check to see if anything changed.
386 * Note that we always output a /set record for the first directory.
387 */
388 if (((keys & (F_UNAME | F_UID)) && (*puid != saveuid)) ||
389 ((keys & (F_GNAME | F_GID)) && (*pgid != savegid)) ||
390 ((keys & F_MODE) && (*pmode != savemode)) ||
391 ((keys & F_FLAGS) && (*pflags != saveflags)) ||
392 first) {
393 first = 0;
394 if (flavor != F_NETBSD6 && dflag)
395 fprintf(fp, "/set type=dir");
396 else
397 fprintf(fp, "/set type=file");
398 if (keys & (F_UID | F_UNAME)) {
399 if (keys & F_UNAME &&
400 (name = user_from_uid(saveuid, 1)) != NULL)
401 fprintf(fp, " uname=%s", name);
402 if (keys & F_UID || (keys & F_UNAME && name == NULL))
403 fprintf(fp, " uid=%lu", (u_long)saveuid);
404 }
405 if (keys & (F_GID | F_GNAME)) {
406 if (keys & F_GNAME &&
407 (name = group_from_gid(savegid, 1)) != NULL)
408 fprintf(fp, " gname=%s", name);
409 if (keys & F_GID || (keys & F_GNAME && name == NULL))
410 fprintf(fp, " gid=%lu", (u_long)savegid);
411 }
412 if (keys & F_MODE)
413 fprintf(fp, " mode=%#lo", (u_long)savemode);
414 if (keys & F_NLINK)
415 fprintf(fp, " nlink=1");
416 if (keys & F_FLAGS) {
417 char *str = flags_to_string(saveflags, "none");
418 fprintf(fp, " flags=%s", str);
419 free(str);
420 }
421 fprintf(fp, "\n");
422 *puid = saveuid;
423 *pgid = savegid;
424 *pmode = savemode;
425 *pflags = saveflags;
426 }
427 return (0);
428 }
429
430 /*
431 * dcmp --
432 * used as a comparison function passed to fts_open() to control
433 * the order in which fts_read() returns results. We make
434 * directories sort after non-directories, but otherwise sort in
435 * strcmp() order.
436 *
437 * Keep this in sync with nodecmp() in spec.c.
438 */
439 static int
dcmp(const FTSENT * FTS_CONST * a,const FTSENT * FTS_CONST * b)440 dcmp(const FTSENT *FTS_CONST *a, const FTSENT *FTS_CONST *b)
441 {
442
443 if (S_ISDIR((*a)->fts_statp->st_mode)) {
444 if (!S_ISDIR((*b)->fts_statp->st_mode))
445 return (1);
446 } else if (S_ISDIR((*b)->fts_statp->st_mode))
447 return (-1);
448 return (strcmp((*a)->fts_name, (*b)->fts_name));
449 }
450
451 void
output(FILE * fp,int indent,int * offset,const char * fmt,...)452 output(FILE *fp, int indent, int *offset, const char *fmt, ...)
453 {
454 va_list ap;
455 char buf[1024];
456
457 va_start(ap, fmt);
458 vsnprintf(buf, sizeof(buf), fmt, ap);
459 va_end(ap);
460
461 if (*offset + strlen(buf) > MAXLINELEN - 3) {
462 fprintf(fp, " \\\n%*s", INDENTNAMELEN + indent, "");
463 *offset = INDENTNAMELEN + indent;
464 }
465 *offset += fprintf(fp, " %s", buf) + 1;
466 }
467