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Silence gcc7.1 warnings about snprintf().
[rsync.git] / flist.c
blob82a5d6a7e97643f26137d9eca52b3c7d7ded39f7
1 /*
2 * Generate and receive file lists.
3 *
4 * Copyright (C) 1996 Andrew Tridgell
5 * Copyright (C) 1996 Paul Mackerras
6 * Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
7 * Copyright (C) 2002-2020 Wayne Davison
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 3 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, visit the http://fsf.org website.
21 */
22
23 #include "rsync.h"
24 #include "ifuncs.h"
25 #include "rounding.h"
26 #include "inums.h"
27 #include "io.h"
28
29 extern int am_root;
30 extern int am_server;
31 extern int am_daemon;
32 extern int am_sender;
33 extern int am_generator;
34 extern int inc_recurse;
35 extern int always_checksum;
36 extern int checksum_type;
37 extern int module_id;
38 extern int ignore_errors;
39 extern int numeric_ids;
40 extern int quiet;
41 extern int recurse;
42 extern int use_qsort;
43 extern int xfer_dirs;
44 extern int filesfrom_fd;
45 extern int one_file_system;
46 extern int copy_dirlinks;
47 extern int preserve_uid;
48 extern int preserve_gid;
49 extern int preserve_acls;
50 extern int preserve_xattrs;
51 extern int preserve_links;
52 extern int preserve_hard_links;
53 extern int preserve_devices;
54 extern int preserve_specials;
55 extern int delete_during;
56 extern int missing_args;
57 extern int eol_nulls;
58 extern int atimes_ndx;
59 extern int relative_paths;
60 extern int implied_dirs;
61 extern int ignore_perishable;
62 extern int non_perishable_cnt;
63 extern int prune_empty_dirs;
64 extern int copy_links;
65 extern int copy_unsafe_links;
66 extern int protocol_version;
67 extern int sanitize_paths;
68 extern int munge_symlinks;
69 extern int use_safe_inc_flist;
70 extern int need_unsorted_flist;
71 extern int sender_symlink_iconv;
72 extern int output_needs_newline;
73 extern int sender_keeps_checksum;
74 extern int unsort_ndx;
75 extern uid_t our_uid;
76 extern struct stats stats;
77 extern char *filesfrom_host;
78 extern char *usermap, *groupmap;
79
80 extern char curr_dir[MAXPATHLEN];
81
82 extern struct chmod_mode_struct *chmod_modes;
83
84 extern filter_rule_list filter_list;
85 extern filter_rule_list daemon_filter_list;
86
87 #ifdef ICONV_OPTION
88 extern int filesfrom_convert;
89 extern iconv_t ic_send, ic_recv;
90 #endif
91
92 #define PTR_SIZE (sizeof (struct file_struct *))
93
94 int io_error;
95 int flist_csum_len;
96 dev_t filesystem_dev; /* used to implement -x */
97
98 struct file_list *cur_flist, *first_flist, *dir_flist;
99 int send_dir_ndx = -1, send_dir_depth = -1;
100 int flist_cnt = 0; /* how many (non-tmp) file list objects exist */
101 int file_total = 0; /* total of all active items over all file-lists */
102 int file_old_total = 0; /* total of active items that will soon be gone */
103 int flist_eof = 0; /* all the file-lists are now known */
104 int xfer_flags_as_varint = 0;
105
106 #define NORMAL_NAME 0
107 #define SLASH_ENDING_NAME 1
108 #define DOTDIR_NAME 2
109 #define MISSING_NAME 3
110
111 /* Starting from protocol version 26, we always use 64-bit ino_t and dev_t
112 * internally, even if this platform does not allow files to have 64-bit inums.
113 * The only exception is if we're on a platform with no 64-bit type at all.
114 *
115 * Because we use read_longint() to get these off the wire, if you transfer
116 * devices or (for protocols < 30) hardlinks with dev or inum > 2**32 to a
117 * machine with no 64-bit types then you will get an overflow error.
118 *
119 * Note that if you transfer devices from a 64-bit-devt machine (say, Solaris)
120 * to a 32-bit-devt machine (say, Linux-2.2/x86) then the device numbers will
121 * be truncated. But it's a kind of silly thing to do anyhow. */
122
123 /* The tmp_* vars are used as a cache area by make_file() to store data
124 * that the sender doesn't need to remember in its file list. The data
125 * will survive just long enough to be used by send_file_entry(). */
126 static dev_t tmp_rdev;
127 #ifdef SUPPORT_HARD_LINKS
128 static int64 tmp_dev = -1, tmp_ino;
129 #endif
130 static char tmp_sum[MAX_DIGEST_LEN];
131
132 static char empty_sum[MAX_DIGEST_LEN];
133 static int flist_count_offset; /* for --delete --progress */
134 static int show_filelist_progress;
135
136 static void flist_sort_and_clean(struct file_list *flist, int strip_root);
137 static void output_flist(struct file_list *flist);
138
139 void init_flist(void)
140 {
141 if (DEBUG_GTE(FLIST, 4)) {
142 rprintf(FINFO, "FILE_STRUCT_LEN=%d, EXTRA_LEN=%d\n",
143 (int)FILE_STRUCT_LEN, (int)EXTRA_LEN);
144 }
145 flist_csum_len = csum_len_for_type(checksum_type, 1);
146
147 show_filelist_progress = INFO_GTE(FLIST, 1) && xfer_dirs && !am_server && !inc_recurse;
148 }
149
150 static void start_filelist_progress(char *kind)
151 {
152 if (quiet)
153 return;
154 rprintf(FCLIENT, "%s ... ", kind);
155 output_needs_newline = 1;
156 rflush(FINFO);
157 }
158
159 static void emit_filelist_progress(int count)
160 {
161 if (quiet)
162 return;
163 if (output_needs_newline == 2) /* avoid a newline in the middle of this filelist-progress output */
164 output_needs_newline = 0;
165 rprintf(FCLIENT, " %d files...\r", count);
166 output_needs_newline = 2;
167 }
168
169 static void maybe_emit_filelist_progress(int count)
170 {
171 if (INFO_GTE(FLIST, 2) && show_filelist_progress && (count % 100) == 0)
172 emit_filelist_progress(count);
173 }
174
175 static void finish_filelist_progress(const struct file_list *flist)
176 {
177 output_needs_newline = 0;
178 if (INFO_GTE(FLIST, 2)) {
179 /* This overwrites the progress line */
180 rprintf(FINFO, "%d file%sto consider\n",
181 flist->used, flist->used == 1 ? " " : "s ");
182 } else {
183 rprintf(FINFO, "done\n");
184 }
185 }
186
187 void show_flist_stats(void)
188 {
189 /* Nothing yet */
190 }
191
192 /* Stat either a symlink or its referent, depending on the settings of
193 * copy_links, copy_unsafe_links, etc. Returns -1 on error, 0 on success.
194 *
195 * If path is the name of a symlink, then the linkbuf buffer (which must hold
196 * MAXPATHLEN chars) will be set to the symlink's target string.
197 *
198 * The stat structure pointed to by stp will contain information about the
199 * link or the referent as appropriate, if they exist. */
200 static int readlink_stat(const char *path, STRUCT_STAT *stp, char *linkbuf)
201 {
202 #ifdef SUPPORT_LINKS
203 if (link_stat(path, stp, copy_dirlinks) < 0)
204 return -1;
205 if (S_ISLNK(stp->st_mode)) {
206 int llen = do_readlink(path, linkbuf, MAXPATHLEN - 1);
207 if (llen < 0)
208 return -1;
209 linkbuf[llen] = '\0';
210 if (copy_unsafe_links && unsafe_symlink(linkbuf, path)) {
211 if (INFO_GTE(SYMSAFE, 1)) {
212 rprintf(FINFO,"copying unsafe symlink \"%s\" -> \"%s\"\n",
213 path, linkbuf);
214 }
215 return x_stat(path, stp, NULL);
216 }
217 if (munge_symlinks && am_sender && llen > SYMLINK_PREFIX_LEN
218 && strncmp(linkbuf, SYMLINK_PREFIX, SYMLINK_PREFIX_LEN) == 0) {
219 memmove(linkbuf, linkbuf + SYMLINK_PREFIX_LEN,
220 llen - SYMLINK_PREFIX_LEN + 1);
221 }
222 }
223 return 0;
224 #else
225 return x_stat(path, stp, NULL);
226 #endif
227 }
228
229 int link_stat(const char *path, STRUCT_STAT *stp, int follow_dirlinks)
230 {
231 #ifdef SUPPORT_LINKS
232 if (copy_links)
233 return x_stat(path, stp, NULL);
234 if (x_lstat(path, stp, NULL) < 0)
235 return -1;
236 if (follow_dirlinks && S_ISLNK(stp->st_mode)) {
237 STRUCT_STAT st;
238 if (x_stat(path, &st, NULL) == 0 && S_ISDIR(st.st_mode))
239 *stp = st;
240 }
241 return 0;
242 #else
243 return x_stat(path, stp, NULL);
244 #endif
245 }
246
247 static inline int path_is_daemon_excluded(char *path, int ignore_filename)
248 {
249 if (daemon_filter_list.head) {
250 char *slash = path;
251
252 while ((slash = strchr(slash+1, '/')) != NULL) {
253 int ret;
254 *slash = '\0';
255 ret = check_filter(&daemon_filter_list, FLOG, path, 1);
256 *slash = '/';
257 if (ret < 0) {
258 errno = ENOENT;
259 return 1;
260 }
261 }
262
263 if (!ignore_filename
264 && check_filter(&daemon_filter_list, FLOG, path, 1) < 0) {
265 errno = ENOENT;
266 return 1;
267 }
268 }
269
270 return 0;
271 }
272
273 static inline int is_excluded(const char *fname, int is_dir, int filter_level)
274 {
275 return name_is_excluded(fname, is_dir ? NAME_IS_DIR : NAME_IS_FILE, filter_level);
276 }
277
278 static void send_directory(int f, struct file_list *flist,
279 char *fbuf, int len, int flags);
280
281 static const char *pathname, *orig_dir;
282 static int pathname_len;
283
284 /* Make sure flist can hold at least flist->used + extra entries. */
285 static void flist_expand(struct file_list *flist, int extra)
286 {
287 struct file_struct **new_ptr;
288
289 if (flist->used + extra <= flist->malloced)
290 return;
291
292 if (flist->malloced < FLIST_START)
293 flist->malloced = FLIST_START;
294 else if (flist->malloced >= FLIST_LINEAR)
295 flist->malloced += FLIST_LINEAR;
296 else
297 flist->malloced *= 2;
298
299 /* In case count jumped or we are starting the list
300 * with a known size just set it. */
301 if (flist->malloced < flist->used + extra)
302 flist->malloced = flist->used + extra;
303
304 new_ptr = realloc_array(flist->files, struct file_struct *,
305 flist->malloced);
306
307 if (DEBUG_GTE(FLIST, 1) && flist->malloced != FLIST_START) {
308 rprintf(FCLIENT, "[%s] expand file_list pointer array to %s bytes, did%s move\n",
309 who_am_i(),
310 big_num(sizeof flist->files[0] * flist->malloced),
311 (new_ptr == flist->files) ? " not" : "");
312 }
313
314 flist->files = new_ptr;
315
316 if (!flist->files)
317 out_of_memory("flist_expand");
318 }
319
320 static void flist_done_allocating(struct file_list *flist)
321 {
322 void *ptr = pool_boundary(flist->file_pool, 8*1024);
323 if (flist->pool_boundary == ptr)
324 flist->pool_boundary = NULL; /* list didn't use any pool memory */
325 else
326 flist->pool_boundary = ptr;
327 }
328
329 /* Call this with EITHER (1) "file, NULL, 0" to chdir() to the file's
330 * F_PATHNAME(), or (2) "NULL, dir, dirlen" to chdir() to the supplied dir,
331 * with dir == NULL taken to be the starting directory, and dirlen < 0
332 * indicating that strdup(dir) should be called and then the -dirlen length
333 * value checked to ensure that it is not daemon-excluded. */
334 int change_pathname(struct file_struct *file, const char *dir, int dirlen)
335 {
336 if (dirlen < 0) {
337 char *cpy = strdup(dir);
338 if (*cpy != '/')
339 change_dir(orig_dir, CD_SKIP_CHDIR);
340 if (path_is_daemon_excluded(cpy, 0))
341 goto chdir_error;
342 dir = cpy;
343 dirlen = -dirlen;
344 } else {
345 if (file) {
346 if (pathname == F_PATHNAME(file))
347 return 1;
348 dir = F_PATHNAME(file);
349 if (dir)
350 dirlen = strlen(dir);
351 } else if (pathname == dir)
352 return 1;
353 if (dir && *dir != '/')
354 change_dir(orig_dir, CD_SKIP_CHDIR);
355 }
356
357 pathname = dir;
358 pathname_len = dirlen;
359
360 if (!dir)
361 dir = orig_dir;
362
363 if (!change_dir(dir, CD_NORMAL)) {
364 chdir_error:
365 io_error |= IOERR_GENERAL;
366 rsyserr(FERROR_XFER, errno, "change_dir %s failed", full_fname(dir));
367 if (dir != orig_dir)
368 change_dir(orig_dir, CD_NORMAL);
369 pathname = NULL;
370 pathname_len = 0;
371 return 0;
372 }
373
374 return 1;
375 }
376
377 static void send_file_entry(int f, const char *fname, struct file_struct *file,
378 #ifdef SUPPORT_LINKS
379 const char *symlink_name, int symlink_len,
380 #endif
381 int ndx, int first_ndx)
382 {
383 static time_t modtime, atime;
384 static mode_t mode;
385 #ifdef SUPPORT_HARD_LINKS
386 static int64 dev;
387 #endif
388 static dev_t rdev;
389 static uint32 rdev_major;
390 static uid_t uid;
391 static gid_t gid;
392 static const char *user_name, *group_name;
393 static char lastname[MAXPATHLEN];
394 #ifdef SUPPORT_HARD_LINKS
395 int first_hlink_ndx = -1;
396 #endif
397 int l1, l2;
398 int xflags;
399
400 /* Initialize starting value of xflags and adjust counts. */
401 if (S_ISREG(file->mode))
402 xflags = 0;
403 else if (S_ISDIR(file->mode)) {
404 stats.num_dirs++;
405 if (protocol_version >= 30) {
406 if (file->flags & FLAG_CONTENT_DIR)
407 xflags = file->flags & FLAG_TOP_DIR;
408 else if (file->flags & FLAG_IMPLIED_DIR)
409 xflags = XMIT_TOP_DIR | XMIT_NO_CONTENT_DIR;
410 else
411 xflags = XMIT_NO_CONTENT_DIR;
412 } else
413 xflags = file->flags & FLAG_TOP_DIR; /* FLAG_TOP_DIR == XMIT_TOP_DIR */
414 } else {
415 if (S_ISLNK(file->mode))
416 stats.num_symlinks++;
417 else if (IS_DEVICE(file->mode))
418 stats.num_devices++;
419 else if (IS_SPECIAL(file->mode))
420 stats.num_specials++;
421 xflags = 0;
422 }
423
424 if (file->mode == mode)
425 xflags |= XMIT_SAME_MODE;
426 else
427 mode = file->mode;
428
429 if (preserve_devices && IS_DEVICE(mode)) {
430 if (protocol_version < 28) {
431 if (tmp_rdev == rdev)
432 xflags |= XMIT_SAME_RDEV_pre28;
433 else
434 rdev = tmp_rdev;
435 } else {
436 rdev = tmp_rdev;
437 if ((uint32)major(rdev) == rdev_major)
438 xflags |= XMIT_SAME_RDEV_MAJOR;
439 else
440 rdev_major = major(rdev);
441 if (protocol_version < 30 && (uint32)minor(rdev) <= 0xFFu)
442 xflags |= XMIT_RDEV_MINOR_8_pre30;
443 }
444 } else if (preserve_specials && IS_SPECIAL(mode) && protocol_version < 31) {
445 /* Special files don't need an rdev number, so just make
446 * the historical transmission of the value efficient. */
447 if (protocol_version < 28)
448 xflags |= XMIT_SAME_RDEV_pre28;
449 else {
450 rdev = MAKEDEV(major(rdev), 0);
451 xflags |= XMIT_SAME_RDEV_MAJOR;
452 if (protocol_version < 30)
453 xflags |= XMIT_RDEV_MINOR_8_pre30;
454 }
455 } else if (protocol_version < 28)
456 rdev = MAKEDEV(0, 0);
457 if (!preserve_uid || ((uid_t)F_OWNER(file) == uid && *lastname))
458 xflags |= XMIT_SAME_UID;
459 else {
460 uid = F_OWNER(file);
461 if (!numeric_ids) {
462 user_name = add_uid(uid);
463 if (inc_recurse && user_name)
464 xflags |= XMIT_USER_NAME_FOLLOWS;
465 }
466 }
467 if (!preserve_gid || ((gid_t)F_GROUP(file) == gid && *lastname))
468 xflags |= XMIT_SAME_GID;
469 else {
470 gid = F_GROUP(file);
471 if (!numeric_ids) {
472 group_name = add_gid(gid);
473 if (inc_recurse && group_name)
474 xflags |= XMIT_GROUP_NAME_FOLLOWS;
475 }
476 }
477 if (file->modtime == modtime)
478 xflags |= XMIT_SAME_TIME;
479 else
480 modtime = file->modtime;
481 if (NSEC_BUMP(file) && protocol_version >= 31)
482 xflags |= XMIT_MOD_NSEC;
483 if (atimes_ndx && !S_ISDIR(mode)) {
484 if (F_ATIME(file) == atime)
485 xflags |= XMIT_SAME_ATIME;
486 else
487 atime = F_ATIME(file);
488 }
489
490 #ifdef SUPPORT_HARD_LINKS
491 if (tmp_dev != -1) {
492 if (protocol_version >= 30) {
493 struct ht_int64_node *np = idev_find(tmp_dev, tmp_ino);
494 first_hlink_ndx = (int32)(long)np->data - 1;
495 if (first_hlink_ndx < 0) {
496 np->data = (void*)(long)(first_ndx + ndx + 1);
497 xflags |= XMIT_HLINK_FIRST;
498 }
499 if (DEBUG_GTE(HLINK, 1)) {
500 if (first_hlink_ndx >= 0) {
501 rprintf(FINFO, "[%s] #%d hard-links #%d (%sabbrev)\n",
502 who_am_i(), first_ndx + ndx, first_hlink_ndx,
503 first_hlink_ndx >= first_ndx ? "" : "un");
504 } else if (DEBUG_GTE(HLINK, 3)) {
505 rprintf(FINFO, "[%s] dev:inode for #%d is %s:%s\n",
506 who_am_i(), first_ndx + ndx,
507 big_num(tmp_dev), big_num(tmp_ino));
508 }
509 }
510 } else {
511 if (tmp_dev == dev) {
512 if (protocol_version >= 28)
513 xflags |= XMIT_SAME_DEV_pre30;
514 } else
515 dev = tmp_dev;
516 }
517 xflags |= XMIT_HLINKED;
518 }
519 #endif
520
521 for (l1 = 0;
522 lastname[l1] && (fname[l1] == lastname[l1]) && (l1 < 255);
523 l1++) {}
524 l2 = strlen(fname+l1);
525
526 if (l1 > 0)
527 xflags |= XMIT_SAME_NAME;
528 if (l2 > 255)
529 xflags |= XMIT_LONG_NAME;
530
531 /* We must avoid sending a flag value of 0 (or an initial byte of
532 * 0 for the older xflags protocol) or it will signal the end of
533 * the list. Note that the use of XMIT_TOP_DIR on a non-dir has
534 * no meaning, so it's a harmless way to add a bit to the first
535 * flag byte. */
536 if (xfer_flags_as_varint)
537 write_varint(f, xflags ? xflags : XMIT_EXTENDED_FLAGS);
538 else if (protocol_version >= 28) {
539 if (!xflags && !S_ISDIR(mode))
540 xflags |= XMIT_TOP_DIR;
541 if ((xflags & 0xFF00) || !xflags) {
542 xflags |= XMIT_EXTENDED_FLAGS;
543 write_shortint(f, xflags);
544 } else
545 write_byte(f, xflags);
546 } else {
547 if (!(xflags & 0xFF))
548 xflags |= S_ISDIR(mode) ? XMIT_LONG_NAME : XMIT_TOP_DIR;
549 write_byte(f, xflags);
550 }
551 if (xflags & XMIT_SAME_NAME)
552 write_byte(f, l1);
553 if (xflags & XMIT_LONG_NAME)
554 write_varint30(f, l2);
555 else
556 write_byte(f, l2);
557 write_buf(f, fname + l1, l2);
558
559 #ifdef SUPPORT_HARD_LINKS
560 if (first_hlink_ndx >= 0) {
561 write_varint(f, first_hlink_ndx);
562 if (first_hlink_ndx >= first_ndx)
563 goto the_end;
564 }
565 #endif
566
567 write_varlong30(f, F_LENGTH(file), 3);
568 if (!(xflags & XMIT_SAME_TIME)) {
569 if (protocol_version >= 30)
570 write_varlong(f, modtime, 4);
571 else
572 write_int(f, modtime);
573 }
574 if (xflags & XMIT_MOD_NSEC)
575 write_varint(f, F_MOD_NSEC(file));
576 if (!(xflags & XMIT_SAME_MODE))
577 write_int(f, to_wire_mode(mode));
578 if (atimes_ndx && !S_ISDIR(mode) && !(xflags & XMIT_SAME_ATIME))
579 write_varlong(f, atime, 4);
580 if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
581 if (protocol_version < 30)
582 write_int(f, uid);
583 else {
584 write_varint(f, uid);
585 if (xflags & XMIT_USER_NAME_FOLLOWS) {
586 int len = strlen(user_name);
587 write_byte(f, len);
588 write_buf(f, user_name, len);
589 }
590 }
591 }
592 if (preserve_gid && !(xflags & XMIT_SAME_GID)) {
593 if (protocol_version < 30)
594 write_int(f, gid);
595 else {
596 write_varint(f, gid);
597 if (xflags & XMIT_GROUP_NAME_FOLLOWS) {
598 int len = strlen(group_name);
599 write_byte(f, len);
600 write_buf(f, group_name, len);
601 }
602 }
603 }
604 if ((preserve_devices && IS_DEVICE(mode))
605 || (preserve_specials && IS_SPECIAL(mode) && protocol_version < 31)) {
606 if (protocol_version < 28) {
607 if (!(xflags & XMIT_SAME_RDEV_pre28))
608 write_int(f, (int)rdev);
609 } else {
610 if (!(xflags & XMIT_SAME_RDEV_MAJOR))
611 write_varint30(f, major(rdev));
612 if (protocol_version >= 30)
613 write_varint(f, minor(rdev));
614 else if (xflags & XMIT_RDEV_MINOR_8_pre30)
615 write_byte(f, minor(rdev));
616 else
617 write_int(f, minor(rdev));
618 }
619 }
620
621 #ifdef SUPPORT_LINKS
622 if (symlink_len) {
623 write_varint30(f, symlink_len);
624 write_buf(f, symlink_name, symlink_len);
625 }
626 #endif
627
628 #ifdef SUPPORT_HARD_LINKS
629 if (tmp_dev != -1 && protocol_version < 30) {
630 /* Older protocols expect the dev number to be transmitted
631 * 1-incremented so that it is never zero. */
632 if (protocol_version < 26) {
633 /* 32-bit dev_t and ino_t */
634 write_int(f, (int32)(dev+1));
635 write_int(f, (int32)tmp_ino);
636 } else {
637 /* 64-bit dev_t and ino_t */
638 if (!(xflags & XMIT_SAME_DEV_pre30))
639 write_longint(f, dev+1);
640 write_longint(f, tmp_ino);
641 }
642 }
643 #endif
644
645 if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
646 const char *sum;
647 if (S_ISREG(mode))
648 sum = tmp_sum;
649 else {
650 /* Prior to 28, we sent a useless set of nulls. */
651 sum = empty_sum;
652 }
653 write_buf(f, sum, flist_csum_len);
654 }
655
656 #ifdef SUPPORT_HARD_LINKS
657 the_end:
658 #endif
659 strlcpy(lastname, fname, MAXPATHLEN);
660
661 if (S_ISREG(mode) || S_ISLNK(mode))
662 stats.total_size += F_LENGTH(file);
663 }
664
665 static struct file_struct *recv_file_entry(int f, struct file_list *flist, int xflags)
666 {
667 static int64 modtime, atime;
668 static mode_t mode;
669 #ifdef SUPPORT_HARD_LINKS
670 static int64 dev;
671 #endif
672 static dev_t rdev;
673 static uint32 rdev_major;
674 static uid_t uid;
675 static gid_t gid;
676 static uint16 gid_flags;
677 static char lastname[MAXPATHLEN], *lastdir;
678 static int lastdir_depth, lastdir_len = -1;
679 static unsigned int del_hier_name_len = 0;
680 static int in_del_hier = 0;
681 char thisname[MAXPATHLEN];
682 unsigned int l1 = 0, l2 = 0;
683 int alloc_len, basename_len, linkname_len;
684 int extra_len = file_extra_cnt * EXTRA_LEN;
685 int first_hlink_ndx = -1;
686 int64 file_length;
687 uint32 modtime_nsec;
688 const char *basename;
689 struct file_struct *file;
690 alloc_pool_t *pool;
691 char *bp;
692
693 if (xflags & XMIT_SAME_NAME)
694 l1 = read_byte(f);
695
696 if (xflags & XMIT_LONG_NAME)
697 l2 = read_varint30(f);
698 else
699 l2 = read_byte(f);
700
701 if (l2 >= MAXPATHLEN - l1) {
702 rprintf(FERROR,
703 "overflow: xflags=0x%x l1=%d l2=%d lastname=%s [%s]\n",
704 xflags, l1, l2, lastname, who_am_i());
705 overflow_exit("recv_file_entry");
706 }
707
708 strlcpy(thisname, lastname, l1 + 1);
709 read_sbuf(f, &thisname[l1], l2);
710 thisname[l1 + l2] = 0;
711
712 /* Abuse basename_len for a moment... */
713 basename_len = strlcpy(lastname, thisname, MAXPATHLEN);
714
715 #ifdef ICONV_OPTION
716 if (ic_recv != (iconv_t)-1) {
717 xbuf outbuf, inbuf;
718
719 INIT_CONST_XBUF(outbuf, thisname);
720 INIT_XBUF(inbuf, lastname, basename_len, (size_t)-1);
721
722 if (iconvbufs(ic_recv, &inbuf, &outbuf, ICB_INIT) < 0) {
723 io_error |= IOERR_GENERAL;
724 rprintf(FERROR_UTF8,
725 "[%s] cannot convert filename: %s (%s)\n",
726 who_am_i(), lastname, strerror(errno));
727 outbuf.len = 0;
728 }
729 thisname[outbuf.len] = '\0';
730 }
731 #endif
732
733 if (*thisname
734 && (clean_fname(thisname, CFN_REFUSE_DOT_DOT_DIRS) < 0 || (!relative_paths && *thisname == '/'))) {
735 rprintf(FERROR, "ABORTING due to unsafe pathname from sender: %s\n", thisname);
736 exit_cleanup(RERR_PROTOCOL);
737 }
738
739 if (sanitize_paths)
740 sanitize_path(thisname, thisname, "", 0, SP_DEFAULT);
741
742 if ((basename = strrchr(thisname, '/')) != NULL) {
743 int len = basename++ - thisname;
744 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
745 lastdir = new_array(char, len + 1);
746 memcpy(lastdir, thisname, len);
747 lastdir[len] = '\0';
748 lastdir_len = len;
749 lastdir_depth = count_dir_elements(lastdir);
750 }
751 } else
752 basename = thisname;
753 basename_len = strlen(basename) + 1; /* count the '\0' */
754
755 #ifdef SUPPORT_HARD_LINKS
756 if (protocol_version >= 30
757 && BITS_SETnUNSET(xflags, XMIT_HLINKED, XMIT_HLINK_FIRST)) {
758 first_hlink_ndx = read_varint(f);
759 if (first_hlink_ndx < 0 || first_hlink_ndx >= flist->ndx_start + flist->used) {
760 rprintf(FERROR,
761 "hard-link reference out of range: %d (%d)\n",
762 first_hlink_ndx, flist->ndx_start + flist->used);
763 exit_cleanup(RERR_PROTOCOL);
764 }
765 if (DEBUG_GTE(HLINK, 1)) {
766 rprintf(FINFO, "[%s] #%d hard-links #%d (%sabbrev)\n",
767 who_am_i(), flist->used+flist->ndx_start, first_hlink_ndx,
768 first_hlink_ndx >= flist->ndx_start ? "" : "un");
769 }
770 if (first_hlink_ndx >= flist->ndx_start) {
771 struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
772 file_length = F_LENGTH(first);
773 modtime = first->modtime;
774 modtime_nsec = F_MOD_NSEC_or_0(first);
775 mode = first->mode;
776 if (atimes_ndx && !S_ISDIR(mode))
777 atime = F_ATIME(first);
778 if (preserve_uid)
779 uid = F_OWNER(first);
780 if (preserve_gid)
781 gid = F_GROUP(first);
782 if (preserve_devices && IS_DEVICE(mode)) {
783 uint32 *devp = F_RDEV_P(first);
784 rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
785 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
786 }
787 if (preserve_links && S_ISLNK(mode))
788 linkname_len = strlen(F_SYMLINK(first)) + 1;
789 else
790 linkname_len = 0;
791 goto create_object;
792 }
793 }
794 #endif
795
796 file_length = read_varlong30(f, 3);
797 if (!(xflags & XMIT_SAME_TIME)) {
798 if (protocol_version >= 30) {
799 modtime = read_varlong(f, 4);
800 #if SIZEOF_TIME_T < SIZEOF_INT64
801 if (!am_generator && (int64)(time_t)modtime != modtime) {
802 rprintf(FERROR_XFER,
803 "Time value of %s truncated on receiver.\n",
804 lastname);
805 }
806 #endif
807 } else
808 modtime = read_int(f);
809 }
810 if (xflags & XMIT_MOD_NSEC)
811 modtime_nsec = read_varint(f);
812 else
813 modtime_nsec = 0;
814 if (!(xflags & XMIT_SAME_MODE))
815 mode = from_wire_mode(read_int(f));
816 if (atimes_ndx && !S_ISDIR(mode) && !(xflags & XMIT_SAME_ATIME)) {
817 atime = read_varlong(f, 4);
818 #if SIZEOF_TIME_T < SIZEOF_INT64
819 if (!am_generator && (int64)(time_t)atime != atime) {
820 rprintf(FERROR_XFER,
821 "Access time value of %s truncated on receiver.\n",
822 lastname);
823 }
824 #endif
825 }
826
827 if (chmod_modes && !S_ISLNK(mode) && mode)
828 mode = tweak_mode(mode, chmod_modes);
829
830 if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
831 if (protocol_version < 30)
832 uid = (uid_t)read_int(f);
833 else {
834 uid = (uid_t)read_varint(f);
835 if (xflags & XMIT_USER_NAME_FOLLOWS)
836 uid = recv_user_name(f, uid);
837 else if (inc_recurse && am_root && (!numeric_ids || usermap))
838 uid = match_uid(uid);
839 }
840 }
841 if (preserve_gid && !(xflags & XMIT_SAME_GID)) {
842 if (protocol_version < 30)
843 gid = (gid_t)read_int(f);
844 else {
845 gid = (gid_t)read_varint(f);
846 gid_flags = 0;
847 if (xflags & XMIT_GROUP_NAME_FOLLOWS)
848 gid = recv_group_name(f, gid, &gid_flags);
849 else if (inc_recurse && (!am_root || !numeric_ids || groupmap))
850 gid = match_gid(gid, &gid_flags);
851 }
852 }
853
854 if ((preserve_devices && IS_DEVICE(mode))
855 || (preserve_specials && IS_SPECIAL(mode) && protocol_version < 31)) {
856 if (protocol_version < 28) {
857 if (!(xflags & XMIT_SAME_RDEV_pre28))
858 rdev = (dev_t)read_int(f);
859 } else {
860 uint32 rdev_minor;
861 if (!(xflags & XMIT_SAME_RDEV_MAJOR))
862 rdev_major = read_varint30(f);
863 if (protocol_version >= 30)
864 rdev_minor = read_varint(f);
865 else if (xflags & XMIT_RDEV_MINOR_8_pre30)
866 rdev_minor = read_byte(f);
867 else
868 rdev_minor = read_int(f);
869 rdev = MAKEDEV(rdev_major, rdev_minor);
870 }
871 if (IS_DEVICE(mode))
872 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
873 file_length = 0;
874 } else if (protocol_version < 28)
875 rdev = MAKEDEV(0, 0);
876
877 #ifdef SUPPORT_LINKS
878 if (preserve_links && S_ISLNK(mode)) {
879 linkname_len = read_varint30(f) + 1; /* count the '\0' */
880 if (linkname_len <= 0 || linkname_len > MAXPATHLEN) {
881 rprintf(FERROR, "overflow: linkname_len=%d\n",
882 linkname_len - 1);
883 overflow_exit("recv_file_entry");
884 }
885 #ifdef ICONV_OPTION
886 /* We don't know how much extra room we need to convert
887 * the as-yet-unread symlink data, so let's hope that a
888 * double-size buffer is plenty. */
889 if (sender_symlink_iconv)
890 linkname_len *= 2;
891 #endif
892 if (munge_symlinks)
893 linkname_len += SYMLINK_PREFIX_LEN;
894 }
895 else
896 #endif
897 linkname_len = 0;
898
899 #ifdef SUPPORT_HARD_LINKS
900 create_object:
901 if (preserve_hard_links) {
902 if (protocol_version < 28 && S_ISREG(mode))
903 xflags |= XMIT_HLINKED;
904 if (xflags & XMIT_HLINKED)
905 extra_len += (inc_recurse+1) * EXTRA_LEN;
906 }
907 #endif
908
909 #ifdef SUPPORT_ACLS
910 /* Directories need an extra int32 for the default ACL. */
911 if (preserve_acls && S_ISDIR(mode))
912 extra_len += EXTRA_LEN;
913 #endif
914
915 if (always_checksum && S_ISREG(mode))
916 extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
917
918 #if SIZEOF_INT64 >= 8
919 if (file_length > 0xFFFFFFFFu && S_ISREG(mode))
920 extra_len += EXTRA_LEN;
921 #endif
922 #ifdef CAN_SET_NSEC
923 if (modtime_nsec)
924 extra_len += EXTRA_LEN;
925 #endif
926 if (file_length < 0) {
927 rprintf(FERROR, "Offset underflow: file-length is negative\n");
928 exit_cleanup(RERR_UNSUPPORTED);
929 }
930
931 if (inc_recurse && S_ISDIR(mode)) {
932 if (one_file_system) {
933 /* Room to save the dir's device for -x */
934 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
935 }
936 pool = dir_flist->file_pool;
937 } else
938 pool = flist->file_pool;
939
940 #if EXTRA_ROUNDING > 0
941 if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
942 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
943 #endif
944
945 alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
946 + linkname_len;
947 bp = pool_alloc(pool, alloc_len, "recv_file_entry");
948
949 memset(bp, 0, extra_len + FILE_STRUCT_LEN);
950 bp += extra_len;
951 file = (struct file_struct *)bp;
952 bp += FILE_STRUCT_LEN;
953
954 memcpy(bp, basename, basename_len);
955
956 #ifdef SUPPORT_HARD_LINKS
957 if (xflags & XMIT_HLINKED
958 #ifndef CAN_HARDLINK_SYMLINK
959 && !S_ISLNK(mode)
960 #endif
961 #ifndef CAN_HARDLINK_SPECIAL
962 && !IS_SPECIAL(mode) && !IS_DEVICE(mode)
963 #endif
964 )
965 file->flags |= FLAG_HLINKED;
966 #endif
967 file->modtime = (time_t)modtime;
968 #ifdef CAN_SET_NSEC
969 if (modtime_nsec) {
970 file->flags |= FLAG_MOD_NSEC;
971 F_MOD_NSEC(file) = modtime_nsec;
972 }
973 #endif
974 file->len32 = (uint32)file_length;
975 #if SIZEOF_INT64 >= 8
976 if (file_length > 0xFFFFFFFFu && S_ISREG(mode)) {
977 #if SIZEOF_CAPITAL_OFF_T < 8
978 rprintf(FERROR, "Offset overflow: attempted 64-bit file-length\n");
979 exit_cleanup(RERR_UNSUPPORTED);
980 #else
981 file->flags |= FLAG_LENGTH64;
982 F_HIGH_LEN(file) = (uint32)(file_length >> 32);
983 #endif
984 }
985 #endif
986 file->mode = mode;
987 if (preserve_uid)
988 F_OWNER(file) = uid;
989 if (preserve_gid) {
990 F_GROUP(file) = gid;
991 file->flags |= gid_flags;
992 }
993 if (atimes_ndx && !S_ISDIR(mode))
994 F_ATIME(file) = atime;
995 if (unsort_ndx)
996 F_NDX(file) = flist->used + flist->ndx_start;
997
998 if (basename != thisname) {
999 file->dirname = lastdir;
1000 F_DEPTH(file) = lastdir_depth + 1;
1001 } else
1002 F_DEPTH(file) = 1;
1003
1004 if (S_ISDIR(mode)) {
1005 if (basename_len == 1+1 && *basename == '.') /* +1 for '\0' */
1006 F_DEPTH(file)--;
1007 if (protocol_version >= 30) {
1008 if (!(xflags & XMIT_NO_CONTENT_DIR)) {
1009 if (xflags & XMIT_TOP_DIR)
1010 file->flags |= FLAG_TOP_DIR;
1011 file->flags |= FLAG_CONTENT_DIR;
1012 } else if (xflags & XMIT_TOP_DIR)
1013 file->flags |= FLAG_IMPLIED_DIR;
1014 } else if (xflags & XMIT_TOP_DIR) {
1015 in_del_hier = recurse;
1016 del_hier_name_len = F_DEPTH(file) == 0 ? 0 : l1 + l2;
1017 if (relative_paths && del_hier_name_len > 2
1018 && lastname[del_hier_name_len-1] == '.'
1019 && lastname[del_hier_name_len-2] == '/')
1020 del_hier_name_len -= 2;
1021 file->flags |= FLAG_TOP_DIR | FLAG_CONTENT_DIR;
1022 } else if (in_del_hier) {
1023 if (!relative_paths || !del_hier_name_len
1024 || (l1 >= del_hier_name_len
1025 && lastname[del_hier_name_len] == '/'))
1026 file->flags |= FLAG_CONTENT_DIR;
1027 else
1028 in_del_hier = 0;
1029 }
1030 }
1031
1032 if (preserve_devices && IS_DEVICE(mode)) {
1033 uint32 *devp = F_RDEV_P(file);
1034 DEV_MAJOR(devp) = major(rdev);
1035 DEV_MINOR(devp) = minor(rdev);
1036 }
1037
1038 #ifdef SUPPORT_LINKS
1039 if (linkname_len) {
1040 bp += basename_len;
1041 if (first_hlink_ndx >= flist->ndx_start) {
1042 struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
1043 memcpy(bp, F_SYMLINK(first), linkname_len);
1044 } else {
1045 if (munge_symlinks) {
1046 strlcpy(bp, SYMLINK_PREFIX, linkname_len);
1047 bp += SYMLINK_PREFIX_LEN;
1048 linkname_len -= SYMLINK_PREFIX_LEN;
1049 }
1050 #ifdef ICONV_OPTION
1051 if (sender_symlink_iconv) {
1052 xbuf outbuf, inbuf;
1053
1054 alloc_len = linkname_len;
1055 linkname_len /= 2;
1056
1057 /* Read the symlink data into the end of our double-sized
1058 * buffer and then convert it into the right spot. */
1059 INIT_XBUF(inbuf, bp + alloc_len - linkname_len,
1060 linkname_len - 1, (size_t)-1);
1061 read_sbuf(f, inbuf.buf, inbuf.len);
1062 INIT_XBUF(outbuf, bp, 0, alloc_len);
1063
1064 if (iconvbufs(ic_recv, &inbuf, &outbuf, ICB_INIT) < 0) {
1065 io_error |= IOERR_GENERAL;
1066 rprintf(FERROR_XFER,
1067 "[%s] cannot convert symlink data for: %s (%s)\n",
1068 who_am_i(), full_fname(thisname), strerror(errno));
1069 bp = (char*)file->basename;
1070 *bp++ = '\0';
1071 outbuf.len = 0;
1072 }
1073 bp[outbuf.len] = '\0';
1074 } else
1075 #endif
1076 read_sbuf(f, bp, linkname_len - 1);
1077 if (sanitize_paths && !munge_symlinks && *bp)
1078 sanitize_path(bp, bp, "", lastdir_depth, SP_DEFAULT);
1079 }
1080 }
1081 #endif
1082
1083 #ifdef SUPPORT_HARD_LINKS
1084 if (preserve_hard_links && xflags & XMIT_HLINKED) {
1085 if (protocol_version >= 30) {
1086 if (xflags & XMIT_HLINK_FIRST) {
1087 F_HL_GNUM(file) = flist->ndx_start + flist->used;
1088 } else
1089 F_HL_GNUM(file) = first_hlink_ndx;
1090 } else {
1091 static int32 cnt = 0;
1092 struct ht_int64_node *np;
1093 int64 ino;
1094 int32 ndx;
1095 if (protocol_version < 26) {
1096 dev = read_int(f);
1097 ino = read_int(f);
1098 } else {
1099 if (!(xflags & XMIT_SAME_DEV_pre30))
1100 dev = read_longint(f);
1101 ino = read_longint(f);
1102 }
1103 np = idev_find(dev, ino);
1104 ndx = (int32)(long)np->data - 1;
1105 if (ndx < 0) {
1106 ndx = cnt++;
1107 np->data = (void*)(long)cnt;
1108 }
1109 F_HL_GNUM(file) = ndx;
1110 }
1111 }
1112 #endif
1113
1114 if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
1115 if (S_ISREG(mode))
1116 bp = F_SUM(file);
1117 else {
1118 /* Prior to 28, we get a useless set of nulls. */
1119 bp = tmp_sum;
1120 }
1121 if (first_hlink_ndx >= flist->ndx_start) {
1122 struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
1123 memcpy(bp, F_SUM(first), flist_csum_len);
1124 } else
1125 read_buf(f, bp, flist_csum_len);
1126 }
1127
1128 #ifdef SUPPORT_ACLS
1129 if (preserve_acls && !S_ISLNK(mode))
1130 receive_acl(f, file);
1131 #endif
1132 #ifdef SUPPORT_XATTRS
1133 if (preserve_xattrs)
1134 receive_xattr(f, file);
1135 #endif
1136
1137 if (S_ISREG(mode) || S_ISLNK(mode))
1138 stats.total_size += file_length;
1139
1140 return file;
1141 }
1142
1143 /* Create a file_struct for a named file by reading its stat() information
1144 * and performing extensive checks against global options.
1145 *
1146 * Returns a pointer to the new file struct, or NULL if there was an error
1147 * or this file should be excluded.
1148 *
1149 * Note: Any error (here or in send_file_name) that results in the omission of
1150 * an existent source file from the file list should set
1151 * "io_error |= IOERR_GENERAL" to avoid deletion of the file from the
1152 * destination if --delete is on. */
1153 struct file_struct *make_file(const char *fname, struct file_list *flist,
1154 STRUCT_STAT *stp, int flags, int filter_level)
1155 {
1156 static char *lastdir;
1157 static int lastdir_len = -1;
1158 struct file_struct *file;
1159 char thisname[MAXPATHLEN];
1160 char linkname[MAXPATHLEN];
1161 int alloc_len, basename_len, linkname_len;
1162 int extra_len = file_extra_cnt * EXTRA_LEN;
1163 const char *basename;
1164 alloc_pool_t *pool;
1165 STRUCT_STAT st;
1166 char *bp;
1167
1168 if (strlcpy(thisname, fname, sizeof thisname) >= sizeof thisname) {
1169 io_error |= IOERR_GENERAL;
1170 rprintf(FERROR_XFER, "skipping overly long name: %s\n", fname);
1171 return NULL;
1172 }
1173 clean_fname(thisname, 0);
1174 if (sanitize_paths)
1175 sanitize_path(thisname, thisname, "", 0, SP_DEFAULT);
1176
1177 if (stp && (S_ISDIR(stp->st_mode) || IS_MISSING_FILE(*stp))) {
1178 /* This is needed to handle a "symlink/." with a --relative
1179 * dir, or a request to delete a specific file. */
1180 st = *stp;
1181 *linkname = '\0'; /* make IBM code checker happy */
1182 } else if (readlink_stat(thisname, &st, linkname) != 0) {
1183 int save_errno = errno;
1184 /* See if file is excluded before reporting an error. */
1185 if (filter_level != NO_FILTERS
1186 && (is_excluded(thisname, 0, filter_level)
1187 || is_excluded(thisname, 1, filter_level))) {
1188 if (ignore_perishable && save_errno != ENOENT)
1189 non_perishable_cnt++;
1190 return NULL;
1191 }
1192 if (save_errno == ENOENT) {
1193 #ifdef SUPPORT_LINKS
1194 /* When our options tell us to follow a symlink that
1195 * points nowhere, tell the user about the symlink
1196 * instead of giving a "vanished" message. We only
1197 * dereference a symlink if one of the --copy*links
1198 * options was specified, so there's no need for the
1199 * extra lstat() if one of these options isn't on. */
1200 if ((copy_links || copy_unsafe_links || copy_dirlinks)
1201 && x_lstat(thisname, &st, NULL) == 0
1202 && S_ISLNK(st.st_mode)) {
1203 io_error |= IOERR_GENERAL;
1204 rprintf(FERROR_XFER, "symlink has no referent: %s\n",
1205 full_fname(thisname));
1206 } else
1207 #endif
1208 {
1209 enum logcode c = am_daemon && protocol_version < 28
1210 ? FERROR : FWARNING;
1211 io_error |= IOERR_VANISHED;
1212 rprintf(c, "file has vanished: %s\n",
1213 full_fname(thisname));
1214 }
1215 } else {
1216 io_error |= IOERR_GENERAL;
1217 rsyserr(FERROR_XFER, save_errno, "readlink_stat(%s) failed",
1218 full_fname(thisname));
1219 }
1220 return NULL;
1221 } else if (IS_MISSING_FILE(st)) {
1222 io_error |= IOERR_GENERAL;
1223 rprintf(FINFO, "skipping file with bogus (zero) st_mode: %s\n",
1224 full_fname(thisname));
1225 return NULL;
1226 }
1227
1228 if (filter_level == NO_FILTERS)
1229 goto skip_filters;
1230
1231 if (S_ISDIR(st.st_mode)) {
1232 if (!xfer_dirs) {
1233 rprintf(FINFO, "skipping directory %s\n", thisname);
1234 return NULL;
1235 }
1236 /* -x only affects dirs because we need to avoid recursing
1237 * into a mount-point directory, not to avoid copying a
1238 * symlinked file if -L (or similar) was specified. */
1239 if (one_file_system && st.st_dev != filesystem_dev
1240 && BITS_SETnUNSET(flags, FLAG_CONTENT_DIR, FLAG_TOP_DIR)) {
1241 if (one_file_system > 1) {
1242 if (INFO_GTE(MOUNT, 1)) {
1243 rprintf(FINFO,
1244 "[%s] skipping mount-point dir %s\n",
1245 who_am_i(), thisname);
1246 }
1247 return NULL;
1248 }
1249 flags |= FLAG_MOUNT_DIR;
1250 flags &= ~FLAG_CONTENT_DIR;
1251 }
1252 } else
1253 flags &= ~FLAG_CONTENT_DIR;
1254
1255 if (is_excluded(thisname, S_ISDIR(st.st_mode) != 0, filter_level)) {
1256 if (ignore_perishable)
1257 non_perishable_cnt++;
1258 return NULL;
1259 }
1260
1261 if (lp_ignore_nonreadable(module_id)) {
1262 #ifdef SUPPORT_LINKS
1263 if (!S_ISLNK(st.st_mode))
1264 #endif
1265 if (access(thisname, R_OK) != 0)
1266 return NULL;
1267 }
1268
1269 skip_filters:
1270
1271 /* Only divert a directory in the main transfer. */
1272 if (flist) {
1273 if (flist->prev && S_ISDIR(st.st_mode)
1274 && flags & FLAG_DIVERT_DIRS) {
1275 /* Room for parent/sibling/next-child info. */
1276 extra_len += DIRNODE_EXTRA_CNT * EXTRA_LEN;
1277 if (relative_paths)
1278 extra_len += PTR_EXTRA_CNT * EXTRA_LEN;
1279 pool = dir_flist->file_pool;
1280 } else
1281 pool = flist->file_pool;
1282 } else {
1283 #ifdef SUPPORT_ACLS
1284 /* Directories need an extra int32 for the default ACL. */
1285 if (preserve_acls && S_ISDIR(st.st_mode))
1286 extra_len += EXTRA_LEN;
1287 #endif
1288 pool = NULL;
1289 }
1290
1291 if (DEBUG_GTE(FLIST, 2)) {
1292 rprintf(FINFO, "[%s] make_file(%s,*,%d)\n",
1293 who_am_i(), thisname, filter_level);
1294 }
1295
1296 if ((basename = strrchr(thisname, '/')) != NULL) {
1297 int len = basename++ - thisname;
1298 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
1299 lastdir = new_array(char, len + 1);
1300 memcpy(lastdir, thisname, len);
1301 lastdir[len] = '\0';
1302 lastdir_len = len;
1303 }
1304 } else
1305 basename = thisname;
1306 basename_len = strlen(basename) + 1; /* count the '\0' */
1307
1308 #ifdef SUPPORT_LINKS
1309 linkname_len = S_ISLNK(st.st_mode) ? strlen(linkname) + 1 : 0;
1310 #else
1311 linkname_len = 0;
1312 #endif
1313
1314 #ifdef ST_MTIME_NSEC
1315 if (st.ST_MTIME_NSEC && protocol_version >= 31)
1316 extra_len += EXTRA_LEN;
1317 #endif
1318 #if SIZEOF_CAPITAL_OFF_T >= 8
1319 if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode))
1320 extra_len += EXTRA_LEN;
1321 #endif
1322
1323 if (always_checksum && am_sender && S_ISREG(st.st_mode)) {
1324 file_checksum(thisname, &st, tmp_sum);
1325 if (sender_keeps_checksum)
1326 extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
1327 }
1328
1329 #if EXTRA_ROUNDING > 0
1330 if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
1331 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
1332 #endif
1333
1334 alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
1335 + linkname_len;
1336 if (pool)
1337 bp = pool_alloc(pool, alloc_len, "make_file");
1338 else {
1339 if (!(bp = new_array(char, alloc_len)))
1340 out_of_memory("make_file");
1341 }
1342
1343 memset(bp, 0, extra_len + FILE_STRUCT_LEN);
1344 bp += extra_len;
1345 file = (struct file_struct *)bp;
1346 bp += FILE_STRUCT_LEN;
1347
1348 memcpy(bp, basename, basename_len);
1349
1350 #ifdef SUPPORT_HARD_LINKS
1351 if (preserve_hard_links && flist && flist->prev) {
1352 if (protocol_version >= 28
1353 ? (!S_ISDIR(st.st_mode) && st.st_nlink > 1)
1354 : S_ISREG(st.st_mode)) {
1355 tmp_dev = (int64)st.st_dev;
1356 tmp_ino = (int64)st.st_ino;
1357 } else
1358 tmp_dev = -1;
1359 }
1360 #endif
1361
1362 #ifdef HAVE_STRUCT_STAT_ST_RDEV
1363 if (IS_DEVICE(st.st_mode)) {
1364 tmp_rdev = st.st_rdev;
1365 st.st_size = 0;
1366 } else if (IS_SPECIAL(st.st_mode))
1367 st.st_size = 0;
1368 #endif
1369
1370 file->flags = flags;
1371 file->modtime = st.st_mtime;
1372 #ifdef ST_MTIME_NSEC
1373 if (st.ST_MTIME_NSEC && protocol_version >= 31) {
1374 file->flags |= FLAG_MOD_NSEC;
1375 F_MOD_NSEC(file) = st.ST_MTIME_NSEC;
1376 }
1377 #endif
1378 file->len32 = (uint32)st.st_size;
1379 #if SIZEOF_CAPITAL_OFF_T >= 8
1380 if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode)) {
1381 file->flags |= FLAG_LENGTH64;
1382 F_HIGH_LEN(file) = (uint32)(st.st_size >> 32);
1383 }
1384 #endif
1385 file->mode = st.st_mode;
1386 if (preserve_uid)
1387 F_OWNER(file) = st.st_uid;
1388 if (preserve_gid)
1389 F_GROUP(file) = st.st_gid;
1390 if (am_generator && st.st_uid == our_uid)
1391 file->flags |= FLAG_OWNED_BY_US;
1392 if (atimes_ndx && !S_ISDIR(file->mode))
1393 F_ATIME(file) = st.st_atime;
1394
1395 if (basename != thisname)
1396 file->dirname = lastdir;
1397
1398 #ifdef SUPPORT_LINKS
1399 if (linkname_len)
1400 memcpy(bp + basename_len, linkname, linkname_len);
1401 #endif
1402
1403 if (am_sender)
1404 F_PATHNAME(file) = pathname;
1405 else if (!pool)
1406 F_DEPTH(file) = extra_len / EXTRA_LEN;
1407
1408 if (basename_len == 0+1) {
1409 if (!pool)
1410 unmake_file(file);
1411 return NULL;
1412 }
1413
1414 if (sender_keeps_checksum && S_ISREG(st.st_mode))
1415 memcpy(F_SUM(file), tmp_sum, flist_csum_len);
1416
1417 if (unsort_ndx)
1418 F_NDX(file) = stats.num_dirs;
1419
1420 return file;
1421 }
1422
1423 /* Only called for temporary file_struct entries created by make_file(). */
1424 void unmake_file(struct file_struct *file)
1425 {
1426 free(REQ_EXTRA(file, F_DEPTH(file)));
1427 }
1428
1429 static struct file_struct *send_file_name(int f, struct file_list *flist,
1430 const char *fname, STRUCT_STAT *stp,
1431 int flags, int filter_level)
1432 {
1433 struct file_struct *file;
1434
1435 file = make_file(fname, flist, stp, flags, filter_level);
1436 if (!file)
1437 return NULL;
1438
1439 if (chmod_modes && !S_ISLNK(file->mode) && file->mode)
1440 file->mode = tweak_mode(file->mode, chmod_modes);
1441
1442 if (f >= 0) {
1443 char fbuf[MAXPATHLEN];
1444 #ifdef SUPPORT_LINKS
1445 const char *symlink_name;
1446 int symlink_len;
1447 #ifdef ICONV_OPTION
1448 char symlink_buf[MAXPATHLEN];
1449 #endif
1450 #endif
1451 #if defined SUPPORT_ACLS || defined SUPPORT_XATTRS
1452 stat_x sx;
1453 init_stat_x(&sx);
1454 #endif
1455
1456 #ifdef SUPPORT_LINKS
1457 if (preserve_links && S_ISLNK(file->mode)) {
1458 symlink_name = F_SYMLINK(file);
1459 symlink_len = strlen(symlink_name);
1460 if (symlink_len == 0) {
1461 io_error |= IOERR_GENERAL;
1462 f_name(file, fbuf);
1463 rprintf(FERROR_XFER,
1464 "skipping symlink with 0-length value: %s\n",
1465 full_fname(fbuf));
1466 return NULL;
1467 }
1468 } else {
1469 symlink_name = NULL;
1470 symlink_len = 0;
1471 }
1472 #endif
1473
1474 #ifdef ICONV_OPTION
1475 if (ic_send != (iconv_t)-1) {
1476 xbuf outbuf, inbuf;
1477
1478 INIT_CONST_XBUF(outbuf, fbuf);
1479
1480 if (file->dirname) {
1481 INIT_XBUF_STRLEN(inbuf, (char*)file->dirname);
1482 outbuf.size -= 2; /* Reserve room for '/' & 1 more char. */
1483 if (iconvbufs(ic_send, &inbuf, &outbuf, ICB_INIT) < 0)
1484 goto convert_error;
1485 outbuf.size += 2;
1486 fbuf[outbuf.len++] = '/';
1487 }
1488
1489 INIT_XBUF_STRLEN(inbuf, (char*)file->basename);
1490 if (iconvbufs(ic_send, &inbuf, &outbuf, ICB_INIT) < 0) {
1491 convert_error:
1492 io_error |= IOERR_GENERAL;
1493 rprintf(FERROR_XFER,
1494 "[%s] cannot convert filename: %s (%s)\n",
1495 who_am_i(), f_name(file, fbuf), strerror(errno));
1496 return NULL;
1497 }
1498 fbuf[outbuf.len] = '\0';
1499
1500 #ifdef SUPPORT_LINKS
1501 if (symlink_len && sender_symlink_iconv) {
1502 INIT_XBUF(inbuf, (char*)symlink_name, symlink_len, (size_t)-1);
1503 INIT_CONST_XBUF(outbuf, symlink_buf);
1504 if (iconvbufs(ic_send, &inbuf, &outbuf, ICB_INIT) < 0) {
1505 io_error |= IOERR_GENERAL;
1506 f_name(file, fbuf);
1507 rprintf(FERROR_XFER,
1508 "[%s] cannot convert symlink data for: %s (%s)\n",
1509 who_am_i(), full_fname(fbuf), strerror(errno));
1510 return NULL;
1511 }
1512 symlink_buf[outbuf.len] = '\0';
1513
1514 symlink_name = symlink_buf;
1515 symlink_len = outbuf.len;
1516 }
1517 #endif
1518 } else
1519 #endif
1520 f_name(file, fbuf);
1521
1522 #ifdef SUPPORT_ACLS
1523 if (preserve_acls && !S_ISLNK(file->mode)) {
1524 sx.st.st_mode = file->mode;
1525 if (get_acl(fname, &sx) < 0) {
1526 io_error |= IOERR_GENERAL;
1527 return NULL;
1528 }
1529 }
1530 #endif
1531 #ifdef SUPPORT_XATTRS
1532 if (preserve_xattrs) {
1533 sx.st.st_mode = file->mode;
1534 if (get_xattr(fname, &sx) < 0) {
1535 io_error |= IOERR_GENERAL;
1536 return NULL;
1537 }
1538 }
1539 #endif
1540
1541 send_file_entry(f, fbuf, file,
1542 #ifdef SUPPORT_LINKS
1543 symlink_name, symlink_len,
1544 #endif
1545 flist->used, flist->ndx_start);
1546
1547 #ifdef SUPPORT_ACLS
1548 if (preserve_acls && !S_ISLNK(file->mode)) {
1549 send_acl(f, &sx);
1550 free_acl(&sx);
1551 }
1552 #endif
1553 #ifdef SUPPORT_XATTRS
1554 if (preserve_xattrs) {
1555 F_XATTR(file) = send_xattr(f, &sx);
1556 free_xattr(&sx);
1557 }
1558 #endif
1559 }
1560
1561 maybe_emit_filelist_progress(flist->used + flist_count_offset);
1562
1563 flist_expand(flist, 1);
1564 flist->files[flist->used++] = file;
1565
1566 return file;
1567 }
1568
1569 static void send_if_directory(int f, struct file_list *flist,
1570 struct file_struct *file,
1571 char *fbuf, unsigned int ol,
1572 int flags)
1573 {
1574 char is_dot_dir = fbuf[ol-1] == '.' && (ol == 1 || fbuf[ol-2] == '/');
1575
1576 if (S_ISDIR(file->mode)
1577 && !(file->flags & FLAG_MOUNT_DIR) && f_name(file, fbuf)) {
1578 void *save_filters;
1579 unsigned int len = strlen(fbuf);
1580 if (len > 1 && fbuf[len-1] == '/')
1581 fbuf[--len] = '\0';
1582 save_filters = push_local_filters(fbuf, len);
1583 send_directory(f, flist, fbuf, len, flags);
1584 pop_local_filters(save_filters);
1585 fbuf[ol] = '\0';
1586 if (is_dot_dir)
1587 fbuf[ol-1] = '.';
1588 }
1589 }
1590
1591 static int file_compare(const void *file1, const void *file2)
1592 {
1593 return f_name_cmp(*(struct file_struct **)file1,
1594 *(struct file_struct **)file2);
1595 }
1596
1597 /* The guts of a merge-sort algorithm. This was derived from the glibc
1598 * version, but I (Wayne) changed the merge code to do less copying and
1599 * to require only half the amount of temporary memory. */
1600 static void fsort_tmp(struct file_struct **fp, size_t num,
1601 struct file_struct **tmp)
1602 {
1603 struct file_struct **f1, **f2, **t;
1604 size_t n1, n2;
1605
1606 n1 = num / 2;
1607 n2 = num - n1;
1608 f1 = fp;
1609 f2 = fp + n1;
1610
1611 if (n1 > 1)
1612 fsort_tmp(f1, n1, tmp);
1613 if (n2 > 1)
1614 fsort_tmp(f2, n2, tmp);
1615
1616 while (f_name_cmp(*f1, *f2) <= 0) {
1617 if (!--n1)
1618 return;
1619 f1++;
1620 }
1621
1622 t = tmp;
1623 memcpy(t, f1, n1 * PTR_SIZE);
1624
1625 *f1++ = *f2++, n2--;
1626
1627 while (n1 > 0 && n2 > 0) {
1628 if (f_name_cmp(*t, *f2) <= 0)
1629 *f1++ = *t++, n1--;
1630 else
1631 *f1++ = *f2++, n2--;
1632 }
1633
1634 if (n1 > 0)
1635 memcpy(f1, t, n1 * PTR_SIZE);
1636 }
1637
1638 /* This file-struct sorting routine makes sure that any identical names in
1639 * the file list stay in the same order as they were in the original list.
1640 * This is particularly vital in inc_recurse mode where we expect a sort
1641 * on the flist to match the exact order of a sort on the dir_flist. */
1642 static void fsort(struct file_struct **fp, size_t num)
1643 {
1644 if (num <= 1)
1645 return;
1646
1647 if (use_qsort)
1648 qsort(fp, num, PTR_SIZE, file_compare);
1649 else {
1650 struct file_struct **tmp = new_array(struct file_struct *,
1651 (num+1) / 2);
1652 fsort_tmp(fp, num, tmp);
1653 free(tmp);
1654 }
1655 }
1656
1657 /* We take an entire set of sibling dirs from the sorted flist and link them
1658 * into the tree, setting the appropriate parent/child/sibling pointers. */
1659 static void add_dirs_to_tree(int parent_ndx, struct file_list *from_flist,
1660 int dir_cnt)
1661 {
1662 int i;
1663 int32 *dp = NULL;
1664 int32 *parent_dp = parent_ndx < 0 ? NULL
1665 : F_DIR_NODE_P(dir_flist->sorted[parent_ndx]);
1666
1667 /* The sending side is adding entries to dir_flist in sorted order, so sorted & files are the same. */
1668 flist_expand(dir_flist, dir_cnt);
1669 dir_flist->sorted = dir_flist->files;
1670
1671 for (i = 0; dir_cnt; i++) {
1672 struct file_struct *file = from_flist->sorted[i];
1673
1674 if (!S_ISDIR(file->mode))
1675 continue;
1676
1677 dir_flist->files[dir_flist->used++] = file;
1678 dir_cnt--;
1679
1680 if (file->basename[0] == '.' && file->basename[1] == '\0')
1681 continue;
1682
1683 if (dp)
1684 DIR_NEXT_SIBLING(dp) = dir_flist->used - 1;
1685 else if (parent_dp)
1686 DIR_FIRST_CHILD(parent_dp) = dir_flist->used - 1;
1687 else
1688 send_dir_ndx = dir_flist->used - 1;
1689
1690 dp = F_DIR_NODE_P(file);
1691 DIR_PARENT(dp) = parent_ndx;
1692 DIR_FIRST_CHILD(dp) = -1;
1693 }
1694 if (dp)
1695 DIR_NEXT_SIBLING(dp) = -1;
1696 }
1697
1698 static void interpret_stat_error(const char *fname, int is_dir)
1699 {
1700 if (errno == ENOENT) {
1701 io_error |= IOERR_VANISHED;
1702 rprintf(FWARNING, "%s has vanished: %s\n",
1703 is_dir ? "directory" : "file", full_fname(fname));
1704 } else {
1705 io_error |= IOERR_GENERAL;
1706 rsyserr(FERROR_XFER, errno, "link_stat %s failed",
1707 full_fname(fname));
1708 }
1709 }
1710
1711 /* This function is normally called by the sender, but the receiving side also
1712 * calls it from get_dirlist() with f set to -1 so that we just construct the
1713 * file list in memory without sending it over the wire. Also, get_dirlist()
1714 * might call this with f set to -2, which also indicates that local filter
1715 * rules should be ignored. */
1716 static void send_directory(int f, struct file_list *flist, char *fbuf, int len,
1717 int flags)
1718 {
1719 struct dirent *di;
1720 unsigned remainder;
1721 char *p;
1722 DIR *d;
1723 int divert_dirs = (flags & FLAG_DIVERT_DIRS) != 0;
1724 int start = flist->used;
1725 int filter_level = f == -2 ? SERVER_FILTERS : ALL_FILTERS;
1726
1727 assert(flist != NULL);
1728
1729 if (!(d = opendir(fbuf))) {
1730 if (errno == ENOENT) {
1731 if (am_sender) /* Can abuse this for vanished error w/ENOENT: */
1732 interpret_stat_error(fbuf, True);
1733 return;
1734 }
1735 if (errno == ENOTDIR && (flags & FLAG_PERHAPS_DIR))
1736 return;
1737 io_error |= IOERR_GENERAL;
1738 rsyserr(FERROR_XFER, errno, "opendir %s failed", full_fname(fbuf));
1739 return;
1740 }
1741
1742 p = fbuf + len;
1743 if (len == 1 && *fbuf == '/')
1744 remainder = MAXPATHLEN - 1;
1745 else if (len < MAXPATHLEN-1) {
1746 *p++ = '/';
1747 *p = '\0';
1748 remainder = MAXPATHLEN - (len + 1);
1749 } else
1750 remainder = 0;
1751
1752 for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
1753 unsigned name_len;
1754 char *dname = d_name(di);
1755 if (dname[0] == '.' && (dname[1] == '\0'
1756 || (dname[1] == '.' && dname[2] == '\0')))
1757 continue;
1758 name_len = strlcpy(p, dname, remainder);
1759 if (name_len >= remainder) {
1760 char save = fbuf[len];
1761 fbuf[len] = '\0';
1762 io_error |= IOERR_GENERAL;
1763 rprintf(FERROR_XFER,
1764 "filename overflows max-path len by %u: %s/%s\n",
1765 name_len - remainder + 1, fbuf, dname);
1766 fbuf[len] = save;
1767 continue;
1768 }
1769 if (dname[0] == '\0') {
1770 io_error |= IOERR_GENERAL;
1771 rprintf(FERROR_XFER,
1772 "cannot send file with empty name in %s\n",
1773 full_fname(fbuf));
1774 continue;
1775 }
1776
1777 send_file_name(f, flist, fbuf, NULL, flags, filter_level);
1778 }
1779
1780 fbuf[len] = '\0';
1781
1782 if (errno) {
1783 io_error |= IOERR_GENERAL;
1784 rsyserr(FERROR_XFER, errno, "readdir(%s)", full_fname(fbuf));
1785 }
1786
1787 closedir(d);
1788
1789 if (f >= 0 && recurse && !divert_dirs) {
1790 int i, end = flist->used - 1;
1791 /* send_if_directory() bumps flist->used, so use "end". */
1792 for (i = start; i <= end; i++)
1793 send_if_directory(f, flist, flist->files[i], fbuf, len, flags);
1794 }
1795 }
1796
1797 static void send_implied_dirs(int f, struct file_list *flist, char *fname,
1798 char *start, char *limit, int flags, char name_type)
1799 {
1800 static char lastpath[MAXPATHLEN] = "";
1801 static int lastpath_len = 0;
1802 static struct file_struct *lastpath_struct = NULL;
1803 struct file_struct *file;
1804 item_list *relname_list;
1805 relnamecache **rnpp;
1806 int len, need_new_dir, depth = 0;
1807 filter_rule_list save_filter_list = filter_list;
1808
1809 flags = (flags | FLAG_IMPLIED_DIR) & ~(FLAG_TOP_DIR | FLAG_CONTENT_DIR);
1810 filter_list.head = filter_list.tail = NULL; /* Don't filter implied dirs. */
1811
1812 if (inc_recurse) {
1813 if (lastpath_struct && F_PATHNAME(lastpath_struct) == pathname
1814 && lastpath_len == limit - fname
1815 && strncmp(lastpath, fname, lastpath_len) == 0)
1816 need_new_dir = 0;
1817 else
1818 need_new_dir = 1;
1819 } else {
1820 char *tp = fname, *lp = lastpath;
1821 /* Skip any initial directories in our path that we
1822 * have in common with lastpath. */
1823 assert(start == fname);
1824 for ( ; ; tp++, lp++) {
1825 if (tp == limit) {
1826 if (*lp == '/' || *lp == '\0')
1827 goto done;
1828 break;
1829 }
1830 if (*lp != *tp)
1831 break;
1832 if (*tp == '/') {
1833 start = tp;
1834 depth++;
1835 }
1836 }
1837 need_new_dir = 1;
1838 }
1839
1840 if (need_new_dir) {
1841 int save_copy_links = copy_links;
1842 int save_xfer_dirs = xfer_dirs;
1843 char *slash;
1844
1845 copy_links = xfer_dirs = 1;
1846
1847 *limit = '\0';
1848
1849 for (slash = start; (slash = strchr(slash+1, '/')) != NULL; ) {
1850 *slash = '\0';
1851 file = send_file_name(f, flist, fname, NULL, flags, ALL_FILTERS);
1852 depth++;
1853 if (!inc_recurse && file && S_ISDIR(file->mode))
1854 change_local_filter_dir(fname, strlen(fname), depth);
1855 *slash = '/';
1856 }
1857
1858 file = send_file_name(f, flist, fname, NULL, flags, ALL_FILTERS);
1859 if (inc_recurse) {
1860 if (file && !S_ISDIR(file->mode))
1861 file = NULL;
1862 lastpath_struct = file;
1863 } else if (file && S_ISDIR(file->mode))
1864 change_local_filter_dir(fname, strlen(fname), ++depth);
1865
1866 strlcpy(lastpath, fname, sizeof lastpath);
1867 lastpath_len = limit - fname;
1868
1869 *limit = '/';
1870
1871 copy_links = save_copy_links;
1872 xfer_dirs = save_xfer_dirs;
1873
1874 if (!inc_recurse)
1875 goto done;
1876 }
1877
1878 if (!lastpath_struct)
1879 goto done; /* dir must have vanished */
1880
1881 len = strlen(limit+1);
1882 memcpy(&relname_list, F_DIR_RELNAMES_P(lastpath_struct), sizeof relname_list);
1883 if (!relname_list) {
1884 if (!(relname_list = new0(item_list)))
1885 out_of_memory("send_implied_dirs");
1886 memcpy(F_DIR_RELNAMES_P(lastpath_struct), &relname_list, sizeof relname_list);
1887 }
1888 rnpp = EXPAND_ITEM_LIST(relname_list, relnamecache *, 32);
1889 if (!(*rnpp = (relnamecache*)new_array(char, sizeof (relnamecache) + len)))
1890 out_of_memory("send_implied_dirs");
1891 (*rnpp)->name_type = name_type;
1892 strlcpy((*rnpp)->fname, limit+1, len + 1);
1893
1894 done:
1895 filter_list = save_filter_list;
1896 }
1897
1898 static NORETURN void fatal_unsafe_io_error(void)
1899 {
1900 /* This (sadly) can only happen when pushing data because
1901 * the sender does not know about what kind of delete
1902 * is in effect on the receiving side when pulling. */
1903 rprintf(FERROR_XFER, "FATAL I/O ERROR: dying to avoid a --delete-%s issue with a pre-3.0.7 receiver.\n",
1904 delete_during == 2 ? "delay" : "during");
1905 exit_cleanup(RERR_UNSUPPORTED);
1906 }
1907
1908 static void send1extra(int f, struct file_struct *file, struct file_list *flist)
1909 {
1910 char fbuf[MAXPATHLEN];
1911 item_list *relname_list;
1912 int len, dlen, flags = FLAG_DIVERT_DIRS | FLAG_CONTENT_DIR;
1913 size_t j;
1914
1915 f_name(file, fbuf);
1916 dlen = strlen(fbuf);
1917
1918 if (!change_pathname(file, NULL, 0))
1919 exit_cleanup(RERR_FILESELECT);
1920
1921 change_local_filter_dir(fbuf, dlen, send_dir_depth);
1922
1923 if (file->flags & FLAG_CONTENT_DIR) {
1924 if (one_file_system) {
1925 STRUCT_STAT st;
1926 if (link_stat(fbuf, &st, copy_dirlinks) != 0) {
1927 interpret_stat_error(fbuf, True);
1928 return;
1929 }
1930 filesystem_dev = st.st_dev;
1931 }
1932 send_directory(f, flist, fbuf, dlen, flags);
1933 }
1934
1935 if (!relative_paths)
1936 return;
1937
1938 memcpy(&relname_list, F_DIR_RELNAMES_P(file), sizeof relname_list);
1939 if (!relname_list)
1940 return;
1941
1942 for (j = 0; j < relname_list->count; j++) {
1943 char *slash;
1944 relnamecache *rnp = ((relnamecache**)relname_list->items)[j];
1945 char name_type = rnp->name_type;
1946
1947 fbuf[dlen] = '/';
1948 len = strlcpy(fbuf + dlen + 1, rnp->fname, sizeof fbuf - dlen - 1);
1949 free(rnp);
1950 if (len >= (int)sizeof fbuf)
1951 continue; /* Impossible... */
1952
1953 slash = strchr(fbuf+dlen+1, '/');
1954 if (slash) {
1955 send_implied_dirs(f, flist, fbuf, fbuf+dlen+1, slash, flags, name_type);
1956 continue;
1957 }
1958
1959 if (name_type != NORMAL_NAME) {
1960 STRUCT_STAT st;
1961 if (name_type == MISSING_NAME)
1962 memset(&st, 0, sizeof st);
1963 else if (link_stat(fbuf, &st, 1) != 0) {
1964 interpret_stat_error(fbuf, True);
1965 continue;
1966 }
1967 send_file_name(f, flist, fbuf, &st, FLAG_TOP_DIR | flags, ALL_FILTERS);
1968 } else
1969 send_file_name(f, flist, fbuf, NULL, FLAG_TOP_DIR | flags, ALL_FILTERS);
1970 }
1971
1972 free(relname_list);
1973 }
1974
1975 static void write_end_of_flist(int f, int send_io_error)
1976 {
1977 if (xfer_flags_as_varint) {
1978 write_varint(f, 0);
1979 write_varint(f, send_io_error ? io_error : 0);
1980 } else if (send_io_error) {
1981 write_shortint(f, XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST);
1982 write_varint(f, io_error);
1983 } else
1984 write_byte(f, 0);
1985 }
1986
1987 void send_extra_file_list(int f, int at_least)
1988 {
1989 struct file_list *flist;
1990 int64 start_write;
1991 uint16 prev_flags;
1992 int save_io_error = io_error;
1993
1994 if (flist_eof)
1995 return;
1996
1997 if (at_least < 0)
1998 at_least = file_total - file_old_total + 1;
1999
2000 /* Keep sending data until we have the requested number of
2001 * files in the upcoming file-lists. */
2002 while (file_total - file_old_total < at_least) {
2003 struct file_struct *file = dir_flist->sorted[send_dir_ndx];
2004 int dir_ndx, dstart = stats.num_dirs;
2005 const char *pathname = F_PATHNAME(file);
2006 int32 *dp;
2007
2008 flist = flist_new(0, "send_extra_file_list");
2009 start_write = stats.total_written;
2010
2011 if (unsort_ndx)
2012 dir_ndx = F_NDX(file);
2013 else
2014 dir_ndx = send_dir_ndx;
2015 write_ndx(f, NDX_FLIST_OFFSET - dir_ndx);
2016 flist->parent_ndx = send_dir_ndx; /* the sending side must remember the sorted ndx value */
2017
2018 send1extra(f, file, flist);
2019 prev_flags = file->flags;
2020 dp = F_DIR_NODE_P(file);
2021
2022 /* If there are any duplicate directory names that follow, we
2023 * send all the dirs together in one file-list. The dir_flist
2024 * tree links all the child subdirs onto the last dup dir. */
2025 while ((dir_ndx = DIR_NEXT_SIBLING(dp)) >= 0
2026 && dir_flist->sorted[dir_ndx]->flags & FLAG_DUPLICATE) {
2027 send_dir_ndx = dir_ndx;
2028 file = dir_flist->sorted[dir_ndx];
2029 /* Try to avoid some duplicate scanning of identical dirs. */
2030 if (F_PATHNAME(file) == pathname && prev_flags & FLAG_CONTENT_DIR)
2031 file->flags &= ~FLAG_CONTENT_DIR;
2032 send1extra(f, file, flist);
2033 prev_flags = file->flags;
2034 dp = F_DIR_NODE_P(file);
2035 }
2036
2037 if (io_error == save_io_error || ignore_errors)
2038 write_end_of_flist(f, 0);
2039 else if (use_safe_inc_flist)
2040 write_end_of_flist(f, 1);
2041 else {
2042 if (delete_during)
2043 fatal_unsafe_io_error();
2044 write_end_of_flist(f, 0);
2045 }
2046
2047 if (need_unsorted_flist) {
2048 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2049 out_of_memory("send_extra_file_list");
2050 memcpy(flist->sorted, flist->files,
2051 flist->used * sizeof (struct file_struct*));
2052 } else
2053 flist->sorted = flist->files;
2054
2055 flist_sort_and_clean(flist, 0);
2056
2057 add_dirs_to_tree(send_dir_ndx, flist, stats.num_dirs - dstart);
2058 flist_done_allocating(flist);
2059
2060 file_total += flist->used;
2061 stats.flist_size += stats.total_written - start_write;
2062 stats.num_files += flist->used;
2063 if (DEBUG_GTE(FLIST, 3))
2064 output_flist(flist);
2065
2066 if (DIR_FIRST_CHILD(dp) >= 0) {
2067 send_dir_ndx = DIR_FIRST_CHILD(dp);
2068 send_dir_depth++;
2069 } else {
2070 while (DIR_NEXT_SIBLING(dp) < 0) {
2071 if ((send_dir_ndx = DIR_PARENT(dp)) < 0) {
2072 write_ndx(f, NDX_FLIST_EOF);
2073 flist_eof = 1;
2074 if (DEBUG_GTE(FLIST, 3))
2075 rprintf(FINFO, "[%s] flist_eof=1\n", who_am_i());
2076 change_local_filter_dir(NULL, 0, 0);
2077 goto finish;
2078 }
2079 send_dir_depth--;
2080 file = dir_flist->sorted[send_dir_ndx];
2081 dp = F_DIR_NODE_P(file);
2082 }
2083 send_dir_ndx = DIR_NEXT_SIBLING(dp);
2084 }
2085 }
2086
2087 finish:
2088 if (io_error != save_io_error && protocol_version == 30 && !ignore_errors)
2089 send_msg_int(MSG_IO_ERROR, io_error);
2090 }
2091
2092 struct file_list *send_file_list(int f, int argc, char *argv[])
2093 {
2094 static const char *lastdir;
2095 static int lastdir_len = -1;
2096 int len, dirlen;
2097 STRUCT_STAT st;
2098 char *p, *dir;
2099 struct file_list *flist;
2100 struct timeval start_tv, end_tv;
2101 int64 start_write;
2102 int use_ff_fd = 0;
2103 int disable_buffering, reenable_multiplex = -1;
2104 int flags = recurse ? FLAG_CONTENT_DIR : 0;
2105 int reading_remotely = filesfrom_host != NULL;
2106 int rl_flags = (reading_remotely ? 0 : RL_DUMP_COMMENTS)
2107 #ifdef ICONV_OPTION
2108 | (filesfrom_convert ? RL_CONVERT : 0)
2109 #endif
2110 | (eol_nulls || reading_remotely ? RL_EOL_NULLS : 0);
2111 int implied_dot_dir = 0;
2112
2113 rprintf(FLOG, "building file list\n");
2114 if (show_filelist_progress)
2115 start_filelist_progress("building file list");
2116 else if (inc_recurse && INFO_GTE(FLIST, 1) && !am_server)
2117 rprintf(FCLIENT, "sending incremental file list\n");
2118
2119 start_write = stats.total_written;
2120 gettimeofday(&start_tv, NULL);
2121
2122 if (relative_paths && protocol_version >= 30)
2123 implied_dirs = 1; /* We send flagged implied dirs */
2124
2125 #ifdef SUPPORT_HARD_LINKS
2126 if (preserve_hard_links && protocol_version >= 30 && !cur_flist)
2127 init_hard_links();
2128 #endif
2129
2130 flist = cur_flist = flist_new(0, "send_file_list");
2131 if (inc_recurse) {
2132 dir_flist = flist_new(FLIST_TEMP, "send_file_list");
2133 flags |= FLAG_DIVERT_DIRS;
2134 } else
2135 dir_flist = cur_flist;
2136
2137 disable_buffering = io_start_buffering_out(f);
2138 if (filesfrom_fd >= 0) {
2139 if (argv[0] && !change_dir(argv[0], CD_NORMAL)) {
2140 rsyserr(FERROR_XFER, errno, "change_dir %s failed",
2141 full_fname(argv[0]));
2142 exit_cleanup(RERR_FILESELECT);
2143 }
2144 if (protocol_version < 31) {
2145 /* Older protocols send the files-from data w/o packaging
2146 * it in multiplexed I/O packets, so temporarily switch
2147 * to buffered I/O to match this behavior. */
2148 reenable_multiplex = io_end_multiplex_in(MPLX_TO_BUFFERED);
2149 }
2150 use_ff_fd = 1;
2151 }
2152
2153 if (!orig_dir)
2154 orig_dir = strdup(curr_dir);
2155
2156 while (1) {
2157 char fbuf[MAXPATHLEN], *fn, name_type;
2158
2159 if (use_ff_fd) {
2160 if (read_line(filesfrom_fd, fbuf, sizeof fbuf, rl_flags) == 0)
2161 break;
2162 sanitize_path(fbuf, fbuf, "", 0, SP_KEEP_DOT_DIRS);
2163 } else {
2164 if (argc-- == 0)
2165 break;
2166 strlcpy(fbuf, *argv++, MAXPATHLEN);
2167 if (sanitize_paths)
2168 sanitize_path(fbuf, fbuf, "", 0, SP_KEEP_DOT_DIRS);
2169 }
2170
2171 len = strlen(fbuf);
2172 if (relative_paths) {
2173 /* We clean up fbuf below. */
2174 name_type = NORMAL_NAME;
2175 } else if (!len || fbuf[len - 1] == '/') {
2176 if (len == 2 && fbuf[0] == '.') {
2177 /* Turn "./" into just "." rather than "./." */
2178 fbuf[--len] = '\0';
2179 } else {
2180 if (len + 1 >= MAXPATHLEN)
2181 overflow_exit("send_file_list");
2182 fbuf[len++] = '.';
2183 fbuf[len] = '\0';
2184 }
2185 name_type = DOTDIR_NAME;
2186 } else if (len > 1 && fbuf[len-1] == '.' && fbuf[len-2] == '.'
2187 && (len == 2 || fbuf[len-3] == '/')) {
2188 if (len + 2 >= MAXPATHLEN)
2189 overflow_exit("send_file_list");
2190 fbuf[len++] = '/';
2191 fbuf[len++] = '.';
2192 fbuf[len] = '\0';
2193 name_type = DOTDIR_NAME;
2194 } else if (fbuf[len-1] == '.' && (len == 1 || fbuf[len-2] == '/'))
2195 name_type = DOTDIR_NAME;
2196 else
2197 name_type = NORMAL_NAME;
2198
2199 dir = NULL;
2200
2201 if (!relative_paths) {
2202 p = strrchr(fbuf, '/');
2203 if (p) {
2204 *p = '\0';
2205 if (p == fbuf)
2206 dir = "/";
2207 else
2208 dir = fbuf;
2209 len -= p - fbuf + 1;
2210 fn = p + 1;
2211 } else
2212 fn = fbuf;
2213 } else {
2214 if ((p = strstr(fbuf, "/./")) != NULL) {
2215 *p = '\0';
2216 if (p == fbuf)
2217 dir = "/";
2218 else {
2219 dir = fbuf;
2220 clean_fname(dir, 0);
2221 }
2222 fn = p + 3;
2223 while (*fn == '/')
2224 fn++;
2225 if (!*fn)
2226 *--fn = '\0'; /* ensure room for '.' */
2227 } else
2228 fn = fbuf;
2229 /* A leading ./ can be used in relative mode to affect
2230 * the dest dir without its name being in the path. */
2231 if (*fn == '.' && fn[1] == '/' && fn[2] && !implied_dot_dir)
2232 implied_dot_dir = -1;
2233 len = clean_fname(fn, CFN_KEEP_TRAILING_SLASH
2234 | CFN_DROP_TRAILING_DOT_DIR);
2235 if (len == 1) {
2236 if (fn[0] == '/') {
2237 fn = "/.";
2238 len = 2;
2239 name_type = DOTDIR_NAME;
2240 } else if (fn[0] == '.')
2241 name_type = DOTDIR_NAME;
2242 } else if (fn[len-1] == '/') {
2243 fn[--len] = '\0';
2244 if (len == 1 && *fn == '.')
2245 name_type = DOTDIR_NAME;
2246 else
2247 name_type = SLASH_ENDING_NAME;
2248 }
2249 /* Reject a ".." dir in the active part of the path. */
2250 for (p = fn; (p = strstr(p, "..")) != NULL; p += 2) {
2251 if ((p[2] == '/' || p[2] == '\0')
2252 && (p == fn || p[-1] == '/')) {
2253 rprintf(FERROR,
2254 "found \"..\" dir in relative path: %s\n",
2255 fn);
2256 exit_cleanup(RERR_SYNTAX);
2257 }
2258 }
2259 }
2260
2261 if (!*fn) {
2262 len = 1;
2263 fn = ".";
2264 name_type = DOTDIR_NAME;
2265 }
2266
2267 dirlen = dir ? strlen(dir) : 0;
2268 if (dirlen != lastdir_len || memcmp(lastdir, dir, dirlen) != 0) {
2269 if (!change_pathname(NULL, dir, -dirlen))
2270 goto bad_path;
2271 lastdir = pathname;
2272 lastdir_len = pathname_len;
2273 } else if (!change_pathname(NULL, lastdir, lastdir_len)) {
2274 bad_path:
2275 if (implied_dot_dir < 0)
2276 implied_dot_dir = 0;
2277 continue;
2278 }
2279
2280 if (implied_dot_dir < 0) {
2281 implied_dot_dir = 1;
2282 send_file_name(f, flist, ".", NULL, (flags | FLAG_IMPLIED_DIR) & ~FLAG_CONTENT_DIR, ALL_FILTERS);
2283 }
2284
2285 if (fn != fbuf)
2286 memmove(fbuf, fn, len + 1);
2287
2288 if (link_stat(fbuf, &st, copy_dirlinks || name_type != NORMAL_NAME) != 0
2289 || (name_type != DOTDIR_NAME && is_excluded(fbuf, S_ISDIR(st.st_mode) != 0, SERVER_FILTERS))
2290 || (relative_paths && path_is_daemon_excluded(fbuf, 1))) {
2291 if (errno != ENOENT || missing_args == 0) {
2292 /* This is a transfer error, but inhibit deletion
2293 * only if we might be omitting an existing file. */
2294 if (errno != ENOENT)
2295 io_error |= IOERR_GENERAL;
2296 rsyserr(FERROR_XFER, errno, "link_stat %s failed",
2297 full_fname(fbuf));
2298 continue;
2299 } else if (missing_args == 1) {
2300 /* Just ignore the arg. */
2301 continue;
2302 } else /* (missing_args == 2) */ {
2303 /* Send the arg as a "missing" entry with
2304 * mode 0, which tells the generator to delete it. */
2305 memset(&st, 0, sizeof st);
2306 }
2307 }
2308
2309 /* A dot-dir should not be excluded! */
2310 if (name_type != DOTDIR_NAME && st.st_mode != 0
2311 && is_excluded(fbuf, S_ISDIR(st.st_mode) != 0, ALL_FILTERS))
2312 continue;
2313
2314 if (S_ISDIR(st.st_mode) && !xfer_dirs) {
2315 rprintf(FINFO, "skipping directory %s\n", fbuf);
2316 continue;
2317 }
2318
2319 if (inc_recurse && relative_paths && *fbuf) {
2320 if ((p = strchr(fbuf+1, '/')) != NULL) {
2321 if (p - fbuf == 1 && *fbuf == '.') {
2322 if ((fn = strchr(p+1, '/')) != NULL)
2323 p = fn;
2324 } else
2325 fn = p;
2326 send_implied_dirs(f, flist, fbuf, fbuf, p, flags,
2327 IS_MISSING_FILE(st) ? MISSING_NAME : name_type);
2328 if (fn == p)
2329 continue;
2330 }
2331 } else if (implied_dirs && (p=strrchr(fbuf,'/')) && p != fbuf) {
2332 /* Send the implied directories at the start of the
2333 * source spec, so we get their permissions right. */
2334 send_implied_dirs(f, flist, fbuf, fbuf, p, flags, 0);
2335 }
2336
2337 if (one_file_system)
2338 filesystem_dev = st.st_dev;
2339
2340 if (recurse || (xfer_dirs && name_type != NORMAL_NAME)) {
2341 struct file_struct *file;
2342 file = send_file_name(f, flist, fbuf, &st,
2343 FLAG_TOP_DIR | FLAG_CONTENT_DIR | flags,
2344 NO_FILTERS);
2345 if (!file)
2346 continue;
2347 if (inc_recurse) {
2348 if (name_type == DOTDIR_NAME) {
2349 if (send_dir_depth < 0) {
2350 send_dir_depth = 0;
2351 change_local_filter_dir(fbuf, len, send_dir_depth);
2352 }
2353 send_directory(f, flist, fbuf, len, flags);
2354 }
2355 } else
2356 send_if_directory(f, flist, file, fbuf, len, flags);
2357 } else
2358 send_file_name(f, flist, fbuf, &st, flags, NO_FILTERS);
2359 }
2360
2361 if (reenable_multiplex >= 0)
2362 io_start_multiplex_in(reenable_multiplex);
2363
2364 gettimeofday(&end_tv, NULL);
2365 stats.flist_buildtime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
2366 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
2367 if (stats.flist_buildtime == 0)
2368 stats.flist_buildtime = 1;
2369 start_tv = end_tv;
2370
2371 /* Indicate end of file list */
2372 if (io_error == 0 || ignore_errors)
2373 write_end_of_flist(f, 0);
2374 else if (use_safe_inc_flist)
2375 write_end_of_flist(f, 1);
2376 else {
2377 if (delete_during && inc_recurse)
2378 fatal_unsafe_io_error();
2379 write_end_of_flist(f, 0);
2380 }
2381
2382 #ifdef SUPPORT_HARD_LINKS
2383 if (preserve_hard_links && protocol_version >= 30 && !inc_recurse)
2384 idev_destroy();
2385 #endif
2386
2387 if (show_filelist_progress)
2388 finish_filelist_progress(flist);
2389
2390 gettimeofday(&end_tv, NULL);
2391 stats.flist_xfertime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
2392 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
2393
2394 /* When converting names, both sides keep an unsorted file-list array
2395 * because the names will differ on the sending and receiving sides
2396 * (both sides will use the unsorted index number for each item). */
2397
2398 /* Sort the list without removing any duplicates. This allows the
2399 * receiving side to ask for whatever name it kept. For incremental
2400 * recursion mode, the sender marks duplicate dirs so that it can
2401 * send them together in a single file-list. */
2402 if (need_unsorted_flist) {
2403 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2404 out_of_memory("send_file_list");
2405 memcpy(flist->sorted, flist->files,
2406 flist->used * sizeof (struct file_struct*));
2407 } else
2408 flist->sorted = flist->files;
2409 flist_sort_and_clean(flist, 0);
2410 file_total += flist->used;
2411 file_old_total += flist->used;
2412
2413 if (numeric_ids <= 0 && !inc_recurse)
2414 send_id_list(f);
2415
2416 /* send the io_error flag */
2417 if (protocol_version < 30)
2418 write_int(f, ignore_errors ? 0 : io_error);
2419 else if (!use_safe_inc_flist && io_error && !ignore_errors)
2420 send_msg_int(MSG_IO_ERROR, io_error);
2421
2422 if (disable_buffering)
2423 io_end_buffering_out(IOBUF_FREE_BUFS);
2424
2425 stats.flist_size = stats.total_written - start_write;
2426 stats.num_files = flist->used;
2427
2428 if (DEBUG_GTE(FLIST, 3))
2429 output_flist(flist);
2430
2431 if (DEBUG_GTE(FLIST, 2))
2432 rprintf(FINFO, "send_file_list done\n");
2433
2434 if (inc_recurse) {
2435 send_dir_depth = 1;
2436 add_dirs_to_tree(-1, flist, stats.num_dirs);
2437 if (!file_total || strcmp(flist->sorted[flist->low]->basename, ".") != 0)
2438 flist->parent_ndx = -1;
2439 flist_done_allocating(flist);
2440 if (send_dir_ndx < 0) {
2441 write_ndx(f, NDX_FLIST_EOF);
2442 flist_eof = 1;
2443 if (DEBUG_GTE(FLIST, 3))
2444 rprintf(FINFO, "[%s] flist_eof=1\n", who_am_i());
2445 }
2446 else if (file_total == 1) {
2447 /* If we're creating incremental file-lists and there
2448 * was just 1 item in the first file-list, send 1 more
2449 * file-list to check if this is a 1-file xfer. */
2450 send_extra_file_list(f, 1);
2451 }
2452 } else {
2453 flist_eof = 1;
2454 if (DEBUG_GTE(FLIST, 3))
2455 rprintf(FINFO, "[%s] flist_eof=1\n", who_am_i());
2456 }
2457
2458 return flist;
2459 }
2460
2461 struct file_list *recv_file_list(int f, int dir_ndx)
2462 {
2463 const char *good_dirname = NULL;
2464 struct file_list *flist;
2465 int dstart, flags;
2466 int64 start_read;
2467
2468 if (!first_flist) {
2469 if (show_filelist_progress)
2470 start_filelist_progress("receiving file list");
2471 else if (inc_recurse && INFO_GTE(FLIST, 1) && !am_server)
2472 rprintf(FCLIENT, "receiving incremental file list\n");
2473 rprintf(FLOG, "receiving file list\n");
2474 if (usermap)
2475 parse_name_map(usermap, True);
2476 if (groupmap)
2477 parse_name_map(groupmap, False);
2478 }
2479
2480 start_read = stats.total_read;
2481
2482 #ifdef SUPPORT_HARD_LINKS
2483 if (preserve_hard_links && !first_flist)
2484 init_hard_links();
2485 #endif
2486
2487 flist = flist_new(0, "recv_file_list");
2488
2489 if (inc_recurse) {
2490 if (flist->ndx_start == 1)
2491 dir_flist = flist_new(FLIST_TEMP, "recv_file_list");
2492 dstart = dir_flist->used;
2493 } else {
2494 dir_flist = flist;
2495 dstart = 0;
2496 }
2497
2498 while (1) {
2499 struct file_struct *file;
2500
2501 if (xfer_flags_as_varint) {
2502 if ((flags = read_varint(f)) == 0) {
2503 int err = read_varint(f);
2504 if (!ignore_errors)
2505 io_error |= err;
2506 break;
2507 }
2508 } else {
2509 if ((flags = read_byte(f)) == 0)
2510 break;
2511
2512 if (protocol_version >= 28 && (flags & XMIT_EXTENDED_FLAGS))
2513 flags |= read_byte(f) << 8;
2514
2515 if (flags == (XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST)) {
2516 int err;
2517 if (!use_safe_inc_flist) {
2518 rprintf(FERROR, "Invalid flist flag: %x\n", flags);
2519 exit_cleanup(RERR_PROTOCOL);
2520 }
2521 err = read_varint(f);
2522 if (!ignore_errors)
2523 io_error |= err;
2524 break;
2525 }
2526 }
2527
2528 flist_expand(flist, 1);
2529 file = recv_file_entry(f, flist, flags);
2530
2531 if (inc_recurse) {
2532 static const char empty_dir[] = "\0";
2533 const char *cur_dir = file->dirname ? file->dirname : empty_dir;
2534 if (relative_paths && *cur_dir == '/')
2535 cur_dir++;
2536 if (cur_dir != good_dirname) {
2537 const char *d = dir_ndx >= 0 ? f_name(dir_flist->files[dir_ndx], NULL) : empty_dir;
2538 if (strcmp(cur_dir, d) != 0) {
2539 rprintf(FERROR,
2540 "ABORTING due to invalid path from sender: %s/%s\n",
2541 cur_dir, file->basename);
2542 exit_cleanup(RERR_PROTOCOL);
2543 }
2544 good_dirname = cur_dir;
2545 }
2546 }
2547
2548 if (S_ISREG(file->mode)) {
2549 /* Already counted */
2550 } else if (S_ISDIR(file->mode)) {
2551 if (inc_recurse) {
2552 flist_expand(dir_flist, 1);
2553 dir_flist->files[dir_flist->used++] = file;
2554 }
2555 stats.num_dirs++;
2556 } else if (S_ISLNK(file->mode))
2557 stats.num_symlinks++;
2558 else if (IS_DEVICE(file->mode))
2559 stats.num_symlinks++;
2560 else
2561 stats.num_specials++;
2562
2563 flist->files[flist->used++] = file;
2564
2565 maybe_emit_filelist_progress(flist->used);
2566
2567 if (DEBUG_GTE(FLIST, 2)) {
2568 char *name = f_name(file, NULL);
2569 rprintf(FINFO, "recv_file_name(%s)\n", NS(name));
2570 }
2571 }
2572 file_total += flist->used;
2573
2574 if (DEBUG_GTE(FLIST, 2))
2575 rprintf(FINFO, "received %d names\n", flist->used);
2576
2577 if (show_filelist_progress)
2578 finish_filelist_progress(flist);
2579
2580 if (need_unsorted_flist) {
2581 /* Create an extra array of index pointers that we can sort for
2582 * the generator's use (for wading through the files in sorted
2583 * order and for calling flist_find()). We keep the "files"
2584 * list unsorted for our exchange of index numbers with the
2585 * other side (since their names may not sort the same). */
2586 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2587 out_of_memory("recv_file_list");
2588 memcpy(flist->sorted, flist->files,
2589 flist->used * sizeof (struct file_struct*));
2590 if (inc_recurse && dir_flist->used > dstart) {
2591 static int dir_flist_malloced = 0;
2592 if (dir_flist_malloced < dir_flist->malloced) {
2593 dir_flist->sorted = realloc_array(dir_flist->sorted,
2594 struct file_struct *,
2595 dir_flist->malloced);
2596 dir_flist_malloced = dir_flist->malloced;
2597 }
2598 memcpy(dir_flist->sorted + dstart, dir_flist->files + dstart,
2599 (dir_flist->used - dstart) * sizeof (struct file_struct*));
2600 fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
2601 }
2602 } else {
2603 flist->sorted = flist->files;
2604 if (inc_recurse && dir_flist->used > dstart) {
2605 dir_flist->sorted = dir_flist->files;
2606 fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
2607 }
2608 }
2609
2610 if (inc_recurse)
2611 flist_done_allocating(flist);
2612 else if (f >= 0) {
2613 recv_id_list(f, flist);
2614 flist_eof = 1;
2615 if (DEBUG_GTE(FLIST, 3))
2616 rprintf(FINFO, "[%s] flist_eof=1\n", who_am_i());
2617 }
2618
2619 /* The --relative option sends paths with a leading slash, so we need
2620 * to specify the strip_root option here. We rejected leading slashes
2621 * for a non-relative transfer in recv_file_entry(). */
2622 flist_sort_and_clean(flist, relative_paths);
2623
2624 if (protocol_version < 30) {
2625 /* Recv the io_error flag */
2626 int err = read_int(f);
2627 if (!ignore_errors)
2628 io_error |= err;
2629 } else if (inc_recurse && flist->ndx_start == 1) {
2630 if (!file_total || strcmp(flist->sorted[flist->low]->basename, ".") != 0)
2631 flist->parent_ndx = -1;
2632 }
2633
2634 if (DEBUG_GTE(FLIST, 3))
2635 output_flist(flist);
2636
2637 if (DEBUG_GTE(FLIST, 2))
2638 rprintf(FINFO, "recv_file_list done\n");
2639
2640 stats.flist_size += stats.total_read - start_read;
2641 stats.num_files += flist->used;
2642
2643 return flist;
2644 }
2645
2646 /* This is only used once by the receiver if the very first file-list
2647 * has exactly one item in it. */
2648 void recv_additional_file_list(int f)
2649 {
2650 struct file_list *flist;
2651 int ndx = read_ndx(f);
2652 if (ndx == NDX_FLIST_EOF) {
2653 flist_eof = 1;
2654 if (DEBUG_GTE(FLIST, 3))
2655 rprintf(FINFO, "[%s] flist_eof=1\n", who_am_i());
2656 change_local_filter_dir(NULL, 0, 0);
2657 } else {
2658 ndx = NDX_FLIST_OFFSET - ndx;
2659 if (ndx < 0 || ndx >= dir_flist->used) {
2660 ndx = NDX_FLIST_OFFSET - ndx;
2661 rprintf(FERROR,
2662 "[%s] Invalid dir index: %d (%d - %d)\n",
2663 who_am_i(), ndx, NDX_FLIST_OFFSET,
2664 NDX_FLIST_OFFSET - dir_flist->used + 1);
2665 exit_cleanup(RERR_PROTOCOL);
2666 }
2667 if (DEBUG_GTE(FLIST, 3)) {
2668 rprintf(FINFO, "[%s] receiving flist for dir %d\n",
2669 who_am_i(), ndx);
2670 }
2671 flist = recv_file_list(f, ndx);
2672 flist->parent_ndx = ndx;
2673 }
2674 }
2675
2676 /* Search for an identically-named item in the file list. Note that the
2677 * items must agree in their directory-ness, or no match is returned. */
2678 int flist_find(struct file_list *flist, struct file_struct *f)
2679 {
2680 int low = flist->low, high = flist->high;
2681 int diff, mid, mid_up;
2682
2683 while (low <= high) {
2684 mid = (low + high) / 2;
2685 if (F_IS_ACTIVE(flist->sorted[mid]))
2686 mid_up = mid;
2687 else {
2688 /* Scan for the next non-empty entry using the cached
2689 * distance values. If the value isn't fully up-to-
2690 * date, update it. */
2691 mid_up = mid + F_DEPTH(flist->sorted[mid]);
2692 if (!F_IS_ACTIVE(flist->sorted[mid_up])) {
2693 do {
2694 mid_up += F_DEPTH(flist->sorted[mid_up]);
2695 } while (!F_IS_ACTIVE(flist->sorted[mid_up]));
2696 F_DEPTH(flist->sorted[mid]) = mid_up - mid;
2697 }
2698 if (mid_up > high) {
2699 /* If there's nothing left above us, set high to
2700 * a non-empty entry below us and continue. */
2701 high = mid - (int)flist->sorted[mid]->len32;
2702 if (!F_IS_ACTIVE(flist->sorted[high])) {
2703 do {
2704 high -= (int)flist->sorted[high]->len32;
2705 } while (!F_IS_ACTIVE(flist->sorted[high]));
2706 flist->sorted[mid]->len32 = mid - high;
2707 }
2708 continue;
2709 }
2710 }
2711 diff = f_name_cmp(flist->sorted[mid_up], f);
2712 if (diff == 0) {
2713 if (protocol_version < 29
2714 && S_ISDIR(flist->sorted[mid_up]->mode)
2715 != S_ISDIR(f->mode))
2716 return -1;
2717 return mid_up;
2718 }
2719 if (diff < 0)
2720 low = mid_up + 1;
2721 else
2722 high = mid - 1;
2723 }
2724 return -1;
2725 }
2726
2727 /* Search for a name in the file list. You must specify want_dir_match as:
2728 * 1=match directories, 0=match non-directories, or -1=match either. */
2729 int flist_find_name(struct file_list *flist, const char *fname, int want_dir_match)
2730 {
2731 struct { /* We have to create a temporary file_struct for the search. */
2732 struct file_struct f;
2733 char name_space[MAXPATHLEN];
2734 } t;
2735 char fbuf[MAXPATHLEN];
2736 const char *slash = strrchr(fname, '/');
2737 const char *basename = slash ? slash+1 : fname;
2738
2739 memset(&t.f, 0, FILE_STRUCT_LEN);
2740 memcpy((void *)t.f.basename, basename, strlen(basename)+1);
2741
2742 if (slash) {
2743 strlcpy(fbuf, fname, slash - fname + 1);
2744 t.f.dirname = fbuf;
2745 } else
2746 t.f.dirname = NULL;
2747
2748 t.f.mode = want_dir_match > 0 ? S_IFDIR : S_IFREG;
2749
2750 if (want_dir_match < 0)
2751 return flist_find_ignore_dirness(flist, &t.f);
2752 return flist_find(flist, &t.f);
2753 }
2754
2755 /* Search for an identically-named item in the file list. Differs from
2756 * flist_find in that an item that agrees with "f" in directory-ness is
2757 * preferred but one that does not is still found. */
2758 int flist_find_ignore_dirness(struct file_list *flist, struct file_struct *f)
2759 {
2760 mode_t save_mode;
2761 int ndx;
2762
2763 /* First look for an item that agrees in directory-ness. */
2764 ndx = flist_find(flist, f);
2765 if (ndx >= 0)
2766 return ndx;
2767
2768 /* Temporarily flip f->mode to look for an item of opposite
2769 * directory-ness. */
2770 save_mode = f->mode;
2771 f->mode = S_ISDIR(f->mode) ? S_IFREG : S_IFDIR;
2772 ndx = flist_find(flist, f);
2773 f->mode = save_mode;
2774 return ndx;
2775 }
2776
2777 /*
2778 * Free up any resources a file_struct has allocated
2779 * and clear the file.
2780 */
2781 void clear_file(struct file_struct *file)
2782 {
2783 /* The +1 zeros out the first char of the basename. */
2784 memset(file, 0, FILE_STRUCT_LEN + 1);
2785 /* In an empty entry, F_DEPTH() is an offset to the next non-empty
2786 * entry. Likewise for len32 in the opposite direction. We assume
2787 * that we're alone for now since flist_find() will adjust the counts
2788 * it runs into that aren't up-to-date. */
2789 file->len32 = F_DEPTH(file) = 1;
2790 }
2791
2792 /* Allocate a new file list. */
2793 struct file_list *flist_new(int flags, char *msg)
2794 {
2795 struct file_list *flist;
2796
2797 if (!(flist = new0(struct file_list)))
2798 out_of_memory(msg);
2799
2800 if (flags & FLIST_TEMP) {
2801 if (!(flist->file_pool = pool_create(SMALL_EXTENT, 0,
2802 out_of_memory,
2803 POOL_INTERN)))
2804 out_of_memory(msg);
2805 } else {
2806 /* This is a doubly linked list with prev looping back to
2807 * the end of the list, but the last next pointer is NULL. */
2808 if (!first_flist) {
2809 flist->file_pool = pool_create(NORMAL_EXTENT, 0,
2810 out_of_memory,
2811 POOL_INTERN);
2812 if (!flist->file_pool)
2813 out_of_memory(msg);
2814
2815 flist->ndx_start = flist->flist_num = inc_recurse ? 1 : 0;
2816
2817 first_flist = cur_flist = flist->prev = flist;
2818 } else {
2819 struct file_list *prev = first_flist->prev;
2820
2821 flist->file_pool = first_flist->file_pool;
2822
2823 flist->ndx_start = prev->ndx_start + prev->used + 1;
2824 flist->flist_num = prev->flist_num + 1;
2825
2826 flist->prev = prev;
2827 prev->next = first_flist->prev = flist;
2828 }
2829 flist->pool_boundary = pool_boundary(flist->file_pool, 0);
2830 flist_cnt++;
2831 }
2832
2833 return flist;
2834 }
2835
2836 /* Free up all elements in a flist. */
2837 void flist_free(struct file_list *flist)
2838 {
2839 if (!flist->prev) {
2840 /* Was FLIST_TEMP dir-list. */
2841 } else if (flist == flist->prev) {
2842 first_flist = cur_flist = NULL;
2843 file_total = 0;
2844 flist_cnt = 0;
2845 } else {
2846 if (flist == cur_flist)
2847 cur_flist = flist->next;
2848 if (flist == first_flist)
2849 first_flist = first_flist->next;
2850 else {
2851 flist->prev->next = flist->next;
2852 if (!flist->next)
2853 flist->next = first_flist;
2854 }
2855 flist->next->prev = flist->prev;
2856 file_total -= flist->used;
2857 flist_cnt--;
2858 }
2859
2860 if (!flist->prev || !flist_cnt)
2861 pool_destroy(flist->file_pool);
2862 else
2863 pool_free_old(flist->file_pool, flist->pool_boundary);
2864
2865 if (flist->sorted && flist->sorted != flist->files)
2866 free(flist->sorted);
2867 free(flist->files);
2868 free(flist);
2869 }
2870
2871 /* This routine ensures we don't have any duplicate names in our file list.
2872 * duplicate names can cause corruption because of the pipelining. */
2873 static void flist_sort_and_clean(struct file_list *flist, int strip_root)
2874 {
2875 char fbuf[MAXPATHLEN];
2876 int i, prev_i;
2877
2878 if (!flist)
2879 return;
2880 if (flist->used == 0) {
2881 flist->high = -1;
2882 flist->low = 0;
2883 return;
2884 }
2885
2886 fsort(flist->sorted, flist->used);
2887
2888 if (!am_sender || inc_recurse) {
2889 for (i = prev_i = 0; i < flist->used; i++) {
2890 if (F_IS_ACTIVE(flist->sorted[i])) {
2891 prev_i = i;
2892 break;
2893 }
2894 }
2895 flist->low = prev_i;
2896 } else {
2897 i = prev_i = flist->used - 1;
2898 flist->low = 0;
2899 }
2900
2901 while (++i < flist->used) {
2902 int j;
2903 struct file_struct *file = flist->sorted[i];
2904
2905 if (!F_IS_ACTIVE(file))
2906 continue;
2907 if (f_name_cmp(file, flist->sorted[prev_i]) == 0)
2908 j = prev_i;
2909 else if (protocol_version >= 29 && S_ISDIR(file->mode)) {
2910 int save_mode = file->mode;
2911 /* Make sure that this directory doesn't duplicate a
2912 * non-directory earlier in the list. */
2913 flist->high = prev_i;
2914 file->mode = S_IFREG;
2915 j = flist_find(flist, file);
2916 file->mode = save_mode;
2917 } else
2918 j = -1;
2919 if (j >= 0) {
2920 int keep, drop;
2921 /* If one is a dir and the other is not, we want to
2922 * keep the dir because it might have contents in the
2923 * list. Otherwise keep the first one. */
2924 if (S_ISDIR(file->mode)) {
2925 struct file_struct *fp = flist->sorted[j];
2926 if (!S_ISDIR(fp->mode))
2927 keep = i, drop = j;
2928 else {
2929 if (am_sender)
2930 file->flags |= FLAG_DUPLICATE;
2931 else { /* Make sure we merge our vital flags. */
2932 fp->flags |= file->flags & (FLAG_TOP_DIR|FLAG_CONTENT_DIR);
2933 fp->flags &= file->flags | ~FLAG_IMPLIED_DIR;
2934 }
2935 keep = j, drop = i;
2936 }
2937 } else
2938 keep = j, drop = i;
2939
2940 if (!am_sender) {
2941 if (DEBUG_GTE(DUP, 1)) {
2942 rprintf(FINFO,
2943 "removing duplicate name %s from file list (%d)\n",
2944 f_name(file, fbuf), drop + flist->ndx_start);
2945 }
2946 clear_file(flist->sorted[drop]);
2947 }
2948
2949 if (keep == i) {
2950 if (flist->low == drop) {
2951 for (j = drop + 1;
2952 j < i && !F_IS_ACTIVE(flist->sorted[j]);
2953 j++) {}
2954 flist->low = j;
2955 }
2956 prev_i = i;
2957 }
2958 } else
2959 prev_i = i;
2960 }
2961 flist->high = prev_i;
2962
2963 if (strip_root) {
2964 /* We need to strip off the leading slashes for relative
2965 * paths, but this must be done _after_ the sorting phase. */
2966 for (i = flist->low; i <= flist->high; i++) {
2967 struct file_struct *file = flist->sorted[i];
2968
2969 if (!file->dirname)
2970 continue;
2971 while (*file->dirname == '/')
2972 file->dirname++;
2973 if (!*file->dirname)
2974 file->dirname = NULL;
2975 }
2976 }
2977
2978 if (prune_empty_dirs && !am_sender) {
2979 int j, prev_depth = 0;
2980
2981 prev_i = 0; /* It's OK that this isn't really true. */
2982
2983 for (i = flist->low; i <= flist->high; i++) {
2984 struct file_struct *fp, *file = flist->sorted[i];
2985
2986 /* This temporarily abuses the F_DEPTH() value for a
2987 * directory that is in a chain that might get pruned.
2988 * We restore the old value if it gets a reprieve. */
2989 if (S_ISDIR(file->mode) && F_DEPTH(file)) {
2990 /* Dump empty dirs when coming back down. */
2991 for (j = prev_depth; j >= F_DEPTH(file); j--) {
2992 fp = flist->sorted[prev_i];
2993 if (F_DEPTH(fp) >= 0)
2994 break;
2995 prev_i = -F_DEPTH(fp)-1;
2996 clear_file(fp);
2997 }
2998 prev_depth = F_DEPTH(file);
2999 if (is_excluded(f_name(file, fbuf), 1, ALL_FILTERS)) {
3000 /* Keep dirs through this dir. */
3001 for (j = prev_depth-1; ; j--) {
3002 fp = flist->sorted[prev_i];
3003 if (F_DEPTH(fp) >= 0)
3004 break;
3005 prev_i = -F_DEPTH(fp)-1;
3006 F_DEPTH(fp) = j;
3007 }
3008 } else
3009 F_DEPTH(file) = -prev_i-1;
3010 prev_i = i;
3011 } else {
3012 /* Keep dirs through this non-dir. */
3013 for (j = prev_depth; ; j--) {
3014 fp = flist->sorted[prev_i];
3015 if (F_DEPTH(fp) >= 0)
3016 break;
3017 prev_i = -F_DEPTH(fp)-1;
3018 F_DEPTH(fp) = j;
3019 }
3020 }
3021 }
3022 /* Dump all remaining empty dirs. */
3023 while (1) {
3024 struct file_struct *fp = flist->sorted[prev_i];
3025 if (F_DEPTH(fp) >= 0)
3026 break;
3027 prev_i = -F_DEPTH(fp)-1;
3028 clear_file(fp);
3029 }
3030
3031 for (i = flist->low; i <= flist->high; i++) {
3032 if (F_IS_ACTIVE(flist->sorted[i]))
3033 break;
3034 }
3035 flist->low = i;
3036 for (i = flist->high; i >= flist->low; i--) {
3037 if (F_IS_ACTIVE(flist->sorted[i]))
3038 break;
3039 }
3040 flist->high = i;
3041 }
3042 }
3043
3044 static void output_flist(struct file_list *flist)
3045 {
3046 char uidbuf[16], gidbuf[16], depthbuf[16];
3047 struct file_struct *file;
3048 const char *root, *dir, *slash, *name, *trail;
3049 const char *who = who_am_i();
3050 int i;
3051
3052 rprintf(FINFO, "[%s] flist start=%d, used=%d, low=%d, high=%d\n",
3053 who, flist->ndx_start, flist->used, flist->low, flist->high);
3054 for (i = 0; i < flist->used; i++) {
3055 file = flist->files[i];
3056 if ((am_root || am_sender) && uid_ndx) {
3057 snprintf(uidbuf, sizeof uidbuf, " uid=%u",
3058 F_OWNER(file));
3059 } else
3060 *uidbuf = '\0';
3061 if (gid_ndx) {
3062 static char parens[] = "(\0)\0\0\0";
3063 char *pp = parens + (file->flags & FLAG_SKIP_GROUP ? 0 : 3);
3064 snprintf(gidbuf, sizeof gidbuf, " gid=%s%u%s",
3065 pp, F_GROUP(file), pp + 2);
3066 } else
3067 *gidbuf = '\0';
3068 if (!am_sender)
3069 snprintf(depthbuf, sizeof depthbuf, "%d", F_DEPTH(file));
3070 if (F_IS_ACTIVE(file)) {
3071 root = am_sender ? NS(F_PATHNAME(file)) : depthbuf;
3072 if ((dir = file->dirname) == NULL)
3073 dir = slash = "";
3074 else
3075 slash = "/";
3076 name = file->basename;
3077 trail = S_ISDIR(file->mode) ? "/" : "";
3078 } else
3079 root = dir = slash = name = trail = "";
3080 rprintf(FINFO,
3081 "[%s] i=%d %s %s%s%s%s mode=0%o len=%s%s%s flags=%x\n",
3082 who, i + flist->ndx_start,
3083 root, dir, slash, name, trail,
3084 (int)file->mode, comma_num(F_LENGTH(file)),
3085 uidbuf, gidbuf, file->flags);
3086 }
3087 }
3088
3089 enum fnc_state { s_DIR, s_SLASH, s_BASE, s_TRAILING };
3090 enum fnc_type { t_PATH, t_ITEM };
3091
3092 static int found_prefix;
3093
3094 /* Compare the names of two file_struct entities, similar to how strcmp()
3095 * would do if it were operating on the joined strings.
3096 *
3097 * Some differences beginning with protocol_version 29: (1) directory names
3098 * are compared with an assumed trailing slash so that they compare in a
3099 * way that would cause them to sort immediately prior to any content they
3100 * may have; (2) a directory of any name compares after a non-directory of
3101 * any name at the same depth; (3) a directory with name "." compares prior
3102 * to anything else. These changes mean that a directory and a non-dir
3103 * with the same name will not compare as equal (protocol_version >= 29).
3104 *
3105 * The dirname component can be an empty string, but the basename component
3106 * cannot (and never is in the current codebase). The basename component
3107 * may be NULL (for a removed item), in which case it is considered to be
3108 * after any existing item. */
3109 int f_name_cmp(const struct file_struct *f1, const struct file_struct *f2)
3110 {
3111 int dif;
3112 const uchar *c1, *c2;
3113 enum fnc_state state1, state2;
3114 enum fnc_type type1, type2;
3115 enum fnc_type t_path = protocol_version >= 29 ? t_PATH : t_ITEM;
3116
3117 if (!f1 || !F_IS_ACTIVE(f1)) {
3118 if (!f2 || !F_IS_ACTIVE(f2))
3119 return 0;
3120 return -1;
3121 }
3122 if (!f2 || !F_IS_ACTIVE(f2))
3123 return 1;
3124
3125 c1 = (uchar*)f1->dirname;
3126 c2 = (uchar*)f2->dirname;
3127 if (c1 == c2)
3128 c1 = c2 = NULL;
3129 if (!c1) {
3130 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
3131 c1 = (const uchar*)f1->basename;
3132 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
3133 type1 = t_ITEM;
3134 state1 = s_TRAILING;
3135 c1 = (uchar*)"";
3136 } else
3137 state1 = s_BASE;
3138 } else {
3139 type1 = t_path;
3140 state1 = s_DIR;
3141 }
3142 if (!c2) {
3143 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
3144 c2 = (const uchar*)f2->basename;
3145 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
3146 type2 = t_ITEM;
3147 state2 = s_TRAILING;
3148 c2 = (uchar*)"";
3149 } else
3150 state2 = s_BASE;
3151 } else {
3152 type2 = t_path;
3153 state2 = s_DIR;
3154 }
3155
3156 if (type1 != type2)
3157 return type1 == t_PATH ? 1 : -1;
3158
3159 do {
3160 if (!*c1) {
3161 switch (state1) {
3162 case s_DIR:
3163 state1 = s_SLASH;
3164 c1 = (uchar*)"/";
3165 break;
3166 case s_SLASH:
3167 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
3168 c1 = (const uchar*)f1->basename;
3169 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
3170 type1 = t_ITEM;
3171 state1 = s_TRAILING;
3172 c1 = (uchar*)"";
3173 } else
3174 state1 = s_BASE;
3175 break;
3176 case s_BASE:
3177 state1 = s_TRAILING;
3178 if (type1 == t_PATH) {
3179 c1 = (uchar*)"/";
3180 break;
3181 }
3182 /* FALL THROUGH */
3183 case s_TRAILING:
3184 type1 = t_ITEM;
3185 break;
3186 }
3187 if (*c2 && type1 != type2)
3188 return type1 == t_PATH ? 1 : -1;
3189 }
3190 if (!*c2) {
3191 switch (state2) {
3192 case s_DIR:
3193 state2 = s_SLASH;
3194 c2 = (uchar*)"/";
3195 break;
3196 case s_SLASH:
3197 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
3198 c2 = (const uchar*)f2->basename;
3199 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
3200 type2 = t_ITEM;
3201 state2 = s_TRAILING;
3202 c2 = (uchar*)"";
3203 } else
3204 state2 = s_BASE;
3205 break;
3206 case s_BASE:
3207 state2 = s_TRAILING;
3208 if (type2 == t_PATH) {
3209 c2 = (uchar*)"/";
3210 break;
3211 }
3212 /* FALL THROUGH */
3213 case s_TRAILING:
3214 found_prefix = 1;
3215 if (!*c1)
3216 return 0;
3217 type2 = t_ITEM;
3218 break;
3219 }
3220 if (type1 != type2)
3221 return type1 == t_PATH ? 1 : -1;
3222 }
3223 } while ((dif = (int)*c1++ - (int)*c2++) == 0);
3224
3225 return dif;
3226 }
3227
3228 /* Returns 1 if f1's filename has all of f2's filename as a prefix. This does
3229 * not match if f2's basename is not an exact match of a path element in f1.
3230 * E.g. /path/foo is not a prefix of /path/foobar/baz, but /path/foobar is. */
3231 int f_name_has_prefix(const struct file_struct *f1, const struct file_struct *f2)
3232 {
3233 found_prefix = 0;
3234 f_name_cmp(f1, f2);
3235 return found_prefix;
3236 }
3237
3238 char *f_name_buf(void)
3239 {
3240 static char names[5][MAXPATHLEN];
3241 static unsigned int n;
3242
3243 n = (n + 1) % (sizeof names / sizeof names[0]);
3244
3245 return names[n];
3246 }
3247
3248 /* Return a copy of the full filename of a flist entry, using the indicated
3249 * buffer or one of 5 static buffers if fbuf is NULL. No size-checking is
3250 * done because we checked the size when creating the file_struct entry.
3251 */
3252 char *f_name(const struct file_struct *f, char *fbuf)
3253 {
3254 if (!f || !F_IS_ACTIVE(f))
3255 return NULL;
3256
3257 if (!fbuf)
3258 fbuf = f_name_buf();
3259
3260 if (f->dirname) {
3261 int len = strlen(f->dirname);
3262 memcpy(fbuf, f->dirname, len);
3263 fbuf[len] = '/';
3264 strlcpy(fbuf + len + 1, f->basename, MAXPATHLEN - (len + 1));
3265 } else
3266 strlcpy(fbuf, f->basename, MAXPATHLEN);
3267
3268 return fbuf;
3269 }
3270
3271 /* Do a non-recursive scan of the named directory, possibly ignoring all
3272 * exclude rules except for the daemon's. If "dlen" is >=0, it is the length
3273 * of the dirname string, and also indicates that "dirname" is a MAXPATHLEN
3274 * buffer (the functions we call will append names onto the end, but the old
3275 * dir value will be restored on exit). */
3276 struct file_list *get_dirlist(char *dirname, int dlen, int flags)
3277 {
3278 struct file_list *dirlist;
3279 char dirbuf[MAXPATHLEN];
3280 int save_recurse = recurse;
3281 int save_xfer_dirs = xfer_dirs;
3282 int save_prune_empty_dirs = prune_empty_dirs;
3283 int senddir_fd = flags & GDL_IGNORE_FILTER_RULES ? -2 : -1;
3284 int senddir_flags = FLAG_CONTENT_DIR;
3285
3286 if (dlen < 0) {
3287 dlen = strlcpy(dirbuf, dirname, MAXPATHLEN);
3288 if (dlen >= MAXPATHLEN)
3289 return NULL;
3290 dirname = dirbuf;
3291 }
3292
3293 dirlist = flist_new(FLIST_TEMP, "get_dirlist");
3294
3295 if (flags & GDL_PERHAPS_DIR)
3296 senddir_flags |= FLAG_PERHAPS_DIR;
3297
3298 recurse = 0;
3299 xfer_dirs = 1;
3300 send_directory(senddir_fd, dirlist, dirname, dlen, senddir_flags);
3301 xfer_dirs = save_xfer_dirs;
3302 recurse = save_recurse;
3303 if (INFO_GTE(PROGRESS, 1))
3304 flist_count_offset += dirlist->used;
3305
3306 prune_empty_dirs = 0;
3307 dirlist->sorted = dirlist->files;
3308 flist_sort_and_clean(dirlist, 0);
3309 prune_empty_dirs = save_prune_empty_dirs;
3310
3311 if (DEBUG_GTE(FLIST, 3))
3312 output_flist(dirlist);
3313
3314 return dirlist;
3315 }
rsync: a fast, versatile, remote (and local) file-copying tool