2 * The filter include/exclude routines.
4 * Copyright (C) 1996-2001 Andrew Tridgell <tridge@samba.org>
5 * Copyright (C) 1996 Paul Mackerras
6 * Copyright (C) 2002 Martin Pool
7 * Copyright (C) 2003-2022 Wayne Davison
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.
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.
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.
28 extern int am_generator;
33 extern int local_server;
34 extern int prune_empty_dirs;
35 extern int ignore_perishable;
36 extern int relative_paths;
37 extern int delete_mode;
38 extern int delete_excluded;
39 extern int cvs_exclude;
40 extern int sanitize_paths;
41 extern int protocol_version;
42 extern int trust_sender_args;
45 extern char curr_dir[MAXPATHLEN];
46 extern unsigned int curr_dir_len;
47 extern unsigned int module_dirlen;
49 filter_rule_list filter_list = { .debug_type = "" };
50 filter_rule_list cvs_filter_list = { .debug_type = " [global CVS]" };
51 filter_rule_list daemon_filter_list = { .debug_type = " [daemon]" };
52 filter_rule_list implied_filter_list = { .debug_type = " [implied]" };
54 int saw_xattr_filter = 0;
55 int trust_sender_args = 0;
56 int trust_sender_filter = 0;
58 /* Need room enough for ":MODS " prefix plus some room to grow. */
59 #define MAX_RULE_PREFIX (16)
61 #define SLASH_WILD3_SUFFIX "/***"
63 /* The dirbuf is set by push_local_filters() to the current subdirectory
64 * relative to curr_dir that is being processed. The path always has a
65 * trailing slash appended, and the variable dirbuf_len contains the length
66 * of this path prefix. The path is always absolute. */
67 static char dirbuf[MAXPATHLEN+1];
68 static unsigned int dirbuf_len = 0;
69 static int dirbuf_depth;
71 /* This is True when we're scanning parent dirs for per-dir merge-files. */
72 static BOOL parent_dirscan = False;
74 /* This array contains a list of all the currently active per-dir merge
75 * files. This makes it easier to save the appropriate values when we
76 * "push" down into each subdirectory. */
77 static filter_rule **mergelist_parents;
78 static int mergelist_cnt = 0;
79 static int mergelist_size = 0;
81 /* Each filter_list_struct describes a singly-linked list by keeping track
82 * of both the head and tail pointers. The list is slightly unusual in that
83 * a parent-dir's content can be appended to the end of the local list in a
84 * special way: the last item in the local list has its "next" pointer set
85 * to point to the inherited list, but the local list's tail pointer points
86 * at the end of the local list. Thus, if the local list is empty, the head
87 * will be pointing at the inherited content but the tail will be NULL. To
88 * help you visualize this, here are the possible list arrangements:
90 * Completely Empty Local Content Only
91 * ================================== ====================================
92 * head -> NULL head -> Local1 -> Local2 -> NULL
93 * tail -> NULL tail -------------^
95 * Inherited Content Only Both Local and Inherited Content
96 * ================================== ====================================
97 * head -> Parent1 -> Parent2 -> NULL head -> L1 -> L2 -> P1 -> P2 -> NULL
98 * tail -> NULL tail ---------^
100 * This means that anyone wanting to traverse the whole list to use it just
101 * needs to start at the head and use the "next" pointers until it goes
102 * NULL. To add new local content, we insert the item after the tail item
103 * and update the tail (obviously, if "tail" was NULL, we insert it at the
104 * head). To clear the local list, WE MUST NOT FREE THE INHERITED CONTENT
105 * because it is shared between the current list and our parent list(s).
106 * The easiest way to handle this is to simply truncate the list after the
107 * tail item and then free the local list from the head. When inheriting
108 * the list for a new local dir, we just save off the filter_list_struct
109 * values (so we can pop back to them later) and set the tail to NULL.
112 static void teardown_mergelist(filter_rule *ex)
116 if (!ex->u.mergelist)
119 if (DEBUG_GTE(FILTER, 2)) {
120 rprintf(FINFO, "[%s] deactivating mergelist #%d%s\n",
121 who_am_i(), mergelist_cnt - 1,
122 ex->u.mergelist->debug_type);
125 free(ex->u.mergelist->debug_type);
126 free(ex->u.mergelist);
128 for (j = 0; j < mergelist_cnt; j++) {
129 if (mergelist_parents[j] == ex) {
130 mergelist_parents[j] = NULL;
134 while (mergelist_cnt && mergelist_parents[mergelist_cnt-1] == NULL)
138 static void free_filter(filter_rule *ex)
140 if (ex->rflags & FILTRULE_PERDIR_MERGE)
141 teardown_mergelist(ex);
146 static void free_filters(filter_rule *ent)
149 filter_rule *next = ent->next;
155 /* Build a filter structure given a filter pattern. The value in "pat"
156 * is not null-terminated. "rule" is either held or freed, so the
157 * caller should not free it. */
158 static void add_rule(filter_rule_list *listp, const char *pat, unsigned int pat_len,
159 filter_rule *rule, int xflags)
162 unsigned int pre_len, suf_len, slash_cnt = 0;
163 char *mention_rule_suffix;
165 if (DEBUG_GTE(FILTER, 1) && pat_len && (pat[pat_len-1] == ' ' || pat[pat_len-1] == '\t'))
166 mention_rule_suffix = " -- CAUTION: trailing whitespace!";
168 mention_rule_suffix = DEBUG_GTE(FILTER, 2) ? "" : NULL;
169 if (mention_rule_suffix) {
170 rprintf(FINFO, "[%s] add_rule(%s%.*s%s)%s%s\n",
171 who_am_i(), get_rule_prefix(rule, pat, 0, NULL),
172 (int)pat_len, pat, (rule->rflags & FILTRULE_DIRECTORY) ? "/" : "",
173 listp->debug_type, mention_rule_suffix);
176 /* These flags also indicate that we're reading a list that
177 * needs to be filtered now, not post-filtered later. */
178 if (xflags & (XFLG_ANCHORED2ABS|XFLG_ABS_IF_SLASH)
179 && (rule->rflags & FILTRULES_SIDES)
180 == (am_sender ? FILTRULE_RECEIVER_SIDE : FILTRULE_SENDER_SIDE)) {
181 /* This filter applies only to the other side. Drop it. */
186 if (pat_len > 1 && pat[pat_len-1] == '/') {
188 rule->rflags |= FILTRULE_DIRECTORY;
191 for (cp = pat; cp < pat + pat_len; cp++) {
196 if (!(rule->rflags & (FILTRULE_ABS_PATH | FILTRULE_MERGE_FILE))
197 && ((xflags & (XFLG_ANCHORED2ABS|XFLG_ABS_IF_SLASH) && *pat == '/')
198 || (xflags & XFLG_ABS_IF_SLASH && slash_cnt))) {
199 rule->rflags |= FILTRULE_ABS_PATH;
201 pre_len = dirbuf_len - module_dirlen - 1;
207 /* The daemon wants dir-exclude rules to get an appended "/" + "***". */
208 if (xflags & XFLG_DIR2WILD3
209 && BITS_SETnUNSET(rule->rflags, FILTRULE_DIRECTORY, FILTRULE_INCLUDE)) {
210 rule->rflags &= ~FILTRULE_DIRECTORY;
211 suf_len = sizeof SLASH_WILD3_SUFFIX - 1;
215 rule->pattern = new_array(char, pre_len + pat_len + suf_len + 1);
217 memcpy(rule->pattern, dirbuf + module_dirlen, pre_len);
218 for (cp = rule->pattern; cp < rule->pattern + pre_len; cp++) {
223 strlcpy(rule->pattern + pre_len, pat, pat_len + 1);
226 memcpy(rule->pattern + pat_len, SLASH_WILD3_SUFFIX, suf_len+1);
231 if (strpbrk(rule->pattern, "*[?")) {
232 rule->rflags |= FILTRULE_WILD;
233 if ((cp = strstr(rule->pattern, "**")) != NULL) {
234 rule->rflags |= FILTRULE_WILD2;
235 /* If the pattern starts with **, note that. */
236 if (cp == rule->pattern)
237 rule->rflags |= FILTRULE_WILD2_PREFIX;
238 /* If the pattern ends with ***, note that. */
240 && rule->pattern[pat_len-3] == '*'
241 && rule->pattern[pat_len-2] == '*'
242 && rule->pattern[pat_len-1] == '*')
243 rule->rflags |= FILTRULE_WILD3_SUFFIX;
247 if (rule->rflags & FILTRULE_PERDIR_MERGE) {
248 filter_rule_list *lp;
252 if ((cp = strrchr(rule->pattern, '/')) != NULL)
257 /* If the local merge file was already mentioned, don't
259 for (i = 0; i < mergelist_cnt; i++) {
260 filter_rule *ex = mergelist_parents[i];
264 s = strrchr(ex->pattern, '/');
270 if (len == pat_len - (cp - rule->pattern) && memcmp(s, cp, len) == 0) {
276 lp = new_array0(filter_rule_list, 1);
277 if (asprintf(&lp->debug_type, " [per-dir %s]", cp) < 0)
278 out_of_memory("add_rule");
279 rule->u.mergelist = lp;
281 if (mergelist_cnt == mergelist_size) {
283 mergelist_parents = realloc_array(mergelist_parents, filter_rule *, mergelist_size);
285 if (DEBUG_GTE(FILTER, 2)) {
286 rprintf(FINFO, "[%s] activating mergelist #%d%s\n",
287 who_am_i(), mergelist_cnt, lp->debug_type);
289 mergelist_parents[mergelist_cnt++] = rule;
291 rule->u.slash_cnt = slash_cnt;
294 rule->next = listp->head;
295 listp->head = listp->tail = rule;
297 rule->next = listp->tail->next;
298 listp->tail->next = rule;
303 /* If the wildcards failed, the remote shell might give us a file matching the literal
304 * wildcards. Since "*" & "?" already match themselves, this just needs to deal with
305 * failed "[foo]" idioms.
307 static void maybe_add_literal_brackets_rule(filter_rule const *based_on, int arg_len)
310 const char *arg = based_on->pattern, *cp;
315 arg_len = strlen(arg);
317 for (cp = arg; *cp; cp++) {
318 if (*cp == '\\' && cp[1]) {
320 } else if (*cp == '[')
326 rule = new0(filter_rule);
327 rule->rflags = based_on->rflags;
328 rule->u.slash_cnt = based_on->u.slash_cnt;
329 p = rule->pattern = new_array(char, arg_len + cnt + 1);
330 for (cp = arg; *cp; ) {
331 if (*cp == '\\' && cp[1]) {
333 } else if (*cp == '[')
339 rule->next = implied_filter_list.head;
340 implied_filter_list.head = rule;
341 if (DEBUG_GTE(FILTER, 3)) {
342 rprintf(FINFO, "[%s] add_implied_include(%s%s)\n", who_am_i(), rule->pattern,
343 rule->rflags & FILTRULE_DIRECTORY ? "/" : "");
347 static char *partial_string_buf = NULL;
348 static int partial_string_len = 0;
349 void implied_include_partial_string(const char *s_start, const char *s_end)
351 partial_string_len = s_end - s_start;
352 if (partial_string_len <= 0 || partial_string_len >= MAXPATHLEN) { /* too-large should be impossible... */
353 partial_string_len = 0;
356 if (!partial_string_buf)
357 partial_string_buf = new_array(char, MAXPATHLEN);
358 memcpy(partial_string_buf, s_start, partial_string_len);
361 void free_implied_include_partial_string()
363 if (partial_string_buf) {
364 free(partial_string_buf);
365 partial_string_buf = NULL;
367 partial_string_len = 0; /* paranoia */
370 /* Each arg the client sends to the remote sender turns into an implied include
371 * that the receiver uses to validate the file list from the sender. */
372 void add_implied_include(const char *arg, int skip_daemon_module)
375 int arg_len, saw_wild = 0, saw_live_open_brkt = 0, backslash_cnt = 0;
376 int slash_cnt = 1; /* We know we're adding a leading slash. */
379 if (trust_sender_args)
381 if (partial_string_len) {
382 arg_len = strlen(arg);
383 if (partial_string_len + arg_len >= MAXPATHLEN) {
384 partial_string_len = 0;
385 return; /* Should be impossible... */
387 memcpy(partial_string_buf + partial_string_len, arg, arg_len + 1);
388 partial_string_len = 0;
389 arg = partial_string_buf;
391 if (skip_daemon_module) {
392 if ((cp = strchr(arg, '/')) != NULL)
397 if (relative_paths) {
398 if ((cp = strstr(arg, "/./")) != NULL)
400 } else if ((cp = strrchr(arg, '/')) != NULL) {
402 if (*arg == '.' && arg[1] == '\0')
405 arg_len = strlen(arg);
407 if (strpbrk(arg, "*[?")) {
408 /* We need to add room to escape backslashes if wildcard chars are present. */
409 for (cp = arg; (cp = strchr(cp, '\\')) != NULL; cp++)
413 arg_len++; /* Leave room for the prefixed slash */
414 rule = new0(filter_rule);
415 if (!implied_filter_list.head)
416 implied_filter_list.head = implied_filter_list.tail = rule;
418 rule->next = implied_filter_list.head;
419 implied_filter_list.head = rule;
421 rule->rflags = FILTRULE_INCLUDE + (saw_wild ? FILTRULE_WILD : 0);
422 p = rule->pattern = new_array(char, arg_len + 1);
424 for (cp = arg; *cp; ) {
429 cp++; /* A \] in a non-wild filter causes a problem, so drop the \ . */
430 } else if (!strchr("*[?", cp[1])) {
438 if (p[-1] == '/') { /* This is safe because of the initial slash. */
442 if (relative_paths) {
443 filter_rule const *ent;
446 for (ent = implied_filter_list.head; ent; ent = ent->next) {
447 if (ent != rule && strcmp(ent->pattern, rule->pattern) == 0) {
453 filter_rule *R_rule = new0(filter_rule);
454 R_rule->rflags = FILTRULE_INCLUDE | FILTRULE_DIRECTORY;
455 /* Check if our sub-path has wildcards or escaped backslashes */
456 if (saw_wild && strpbrk(rule->pattern, "*[?\\"))
457 R_rule->rflags |= FILTRULE_WILD;
458 R_rule->pattern = strdup(rule->pattern);
459 R_rule->u.slash_cnt = slash_cnt;
460 R_rule->next = implied_filter_list.head;
461 implied_filter_list.head = R_rule;
462 if (DEBUG_GTE(FILTER, 3)) {
463 rprintf(FINFO, "[%s] add_implied_include(%s/)\n",
464 who_am_i(), R_rule->pattern);
466 if (saw_live_open_brkt)
467 maybe_add_literal_brackets_rule(R_rule, -1);
474 saw_live_open_brkt = 1;
483 rule->u.slash_cnt = slash_cnt;
485 arg_len = p - arg; /* We recompute it due to backslash weirdness. */
486 if (DEBUG_GTE(FILTER, 3))
487 rprintf(FINFO, "[%s] add_implied_include(%s)\n", who_am_i(), rule->pattern);
488 if (saw_live_open_brkt)
489 maybe_add_literal_brackets_rule(rule, arg_len);
492 if (recurse || xfer_dirs) {
493 /* Now create a rule with an added "/" & "**" or "*" at the end */
494 rule = new0(filter_rule);
495 rule->rflags = FILTRULE_INCLUDE | FILTRULE_WILD;
497 rule->rflags |= FILTRULE_WILD2;
498 /* We must leave enough room for / * * \0. */
499 if (!saw_wild && backslash_cnt) {
500 /* We are appending a wildcard, so now the backslashes need to be escaped. */
501 p = rule->pattern = new_array(char, arg_len + backslash_cnt + 3 + 1);
502 for (cp = arg; *cp; ) {
508 p = rule->pattern = new_array(char, arg_len + 3 + 1);
510 memcpy(p, arg, arg_len);
520 rule->u.slash_cnt = slash_cnt + 1;
521 rule->next = implied_filter_list.head;
522 implied_filter_list.head = rule;
523 if (DEBUG_GTE(FILTER, 3))
524 rprintf(FINFO, "[%s] add_implied_include(%s)\n", who_am_i(), rule->pattern);
525 if (saw_live_open_brkt)
526 maybe_add_literal_brackets_rule(rule, p - rule->pattern);
530 /* This frees any non-inherited items, leaving just inherited items on the list. */
531 static void pop_filter_list(filter_rule_list *listp)
533 filter_rule *inherited;
538 inherited = listp->tail->next;
540 /* Truncate any inherited items from the local list. */
541 listp->tail->next = NULL;
542 /* Now free everything that is left. */
543 free_filters(listp->head);
545 listp->head = inherited;
549 /* This returns an expanded (absolute) filename for the merge-file name if
550 * the name has any slashes in it OR if the parent_dirscan var is True;
551 * otherwise it returns the original merge_file name. If the len_ptr value
552 * is non-NULL the merge_file name is limited by the referenced length
553 * value and will be updated with the length of the resulting name. We
554 * always return a name that is null terminated, even if the merge_file
556 static char *parse_merge_name(const char *merge_file, unsigned int *len_ptr,
557 unsigned int prefix_skip)
559 static char buf[MAXPATHLEN];
560 char *fn, tmpbuf[MAXPATHLEN];
563 if (!parent_dirscan && *merge_file != '/') {
564 /* Return the name unchanged it doesn't have any slashes. */
566 const char *p = merge_file + *len_ptr;
567 while (--p > merge_file && *p != '/') {}
568 if (p == merge_file) {
569 strlcpy(buf, merge_file, *len_ptr + 1);
572 } else if (strchr(merge_file, '/') == NULL)
573 return (char *)merge_file;
576 fn = *merge_file == '/' ? buf : tmpbuf;
577 if (sanitize_paths) {
578 const char *r = prefix_skip ? "/" : NULL;
579 /* null-terminate the name if it isn't already */
580 if (len_ptr && merge_file[*len_ptr]) {
581 char *to = fn == buf ? tmpbuf : buf;
582 strlcpy(to, merge_file, *len_ptr + 1);
585 if (!sanitize_path(fn, merge_file, r, dirbuf_depth, SP_DEFAULT)) {
586 rprintf(FERROR, "merge-file name overflows: %s\n",
592 strlcpy(fn, merge_file, len_ptr ? *len_ptr + 1 : MAXPATHLEN);
593 fn_len = clean_fname(fn, CFN_COLLAPSE_DOT_DOT_DIRS);
596 /* If the name isn't in buf yet, it wasn't absolute. */
598 int d_len = dirbuf_len - prefix_skip;
599 if (d_len + fn_len >= MAXPATHLEN) {
600 rprintf(FERROR, "merge-file name overflows: %s\n", fn);
603 memcpy(buf, dirbuf + prefix_skip, d_len);
604 memcpy(buf + d_len, fn, fn_len + 1);
605 fn_len = clean_fname(buf, CFN_COLLAPSE_DOT_DOT_DIRS);
613 /* Sets the dirbuf and dirbuf_len values. */
614 void set_filter_dir(const char *dir, unsigned int dirlen)
618 memcpy(dirbuf, curr_dir, curr_dir_len);
619 dirbuf[curr_dir_len] = '/';
620 len = curr_dir_len + 1;
621 if (len + dirlen >= MAXPATHLEN)
625 memcpy(dirbuf + len, dir, dirlen);
626 dirbuf[dirlen + len] = '\0';
627 dirbuf_len = clean_fname(dirbuf, CFN_COLLAPSE_DOT_DOT_DIRS);
628 if (dirbuf_len > 1 && dirbuf[dirbuf_len-1] == '.'
629 && dirbuf[dirbuf_len-2] == '/')
632 dirbuf[dirbuf_len++] = '/';
633 dirbuf[dirbuf_len] = '\0';
635 dirbuf_depth = count_dir_elements(dirbuf + module_dirlen);
638 /* This routine takes a per-dir merge-file entry and finishes its setup.
639 * If the name has a path portion then we check to see if it refers to a
640 * parent directory of the first transfer dir. If it does, we scan all the
641 * dirs from that point through the parent dir of the transfer dir looking
642 * for the per-dir merge-file in each one. */
643 static BOOL setup_merge_file(int mergelist_num, filter_rule *ex,
644 filter_rule_list *lp)
646 char buf[MAXPATHLEN];
647 char *x, *y, *pat = ex->pattern;
650 if (!(x = parse_merge_name(pat, NULL, 0)) || *x != '/')
653 if (DEBUG_GTE(FILTER, 2)) {
654 rprintf(FINFO, "[%s] performing parent_dirscan for mergelist #%d%s\n",
655 who_am_i(), mergelist_num, lp->debug_type);
659 ex->pattern = strdup(y+1);
663 strlcpy(buf, x, MAXPATHLEN);
665 pathjoin(buf, MAXPATHLEN, dirbuf, x);
667 len = clean_fname(buf, CFN_COLLAPSE_DOT_DOT_DIRS);
668 if (len != 1 && len < MAXPATHLEN-1) {
672 /* This ensures that the specified dir is a parent of the transfer. */
673 for (x = buf, y = dirbuf; *x && *x == *y; x++, y++) {}
675 y += strlen(y); /* nope -- skip the scan */
677 parent_dirscan = True;
679 char save[MAXPATHLEN];
680 strlcpy(save, y, MAXPATHLEN);
682 dirbuf_len = y - dirbuf;
683 strlcpy(x, ex->pattern, MAXPATHLEN - (x - buf));
684 parse_filter_file(lp, buf, ex, XFLG_ANCHORED2ABS);
685 if (ex->rflags & FILTRULE_NO_INHERIT) {
686 /* Free the undesired rules to clean up any per-dir
687 * mergelists they defined. Otherwise pop_local_filters
688 * may crash trying to restore nonexistent state for
689 * those mergelists. */
690 free_filters(lp->head);
694 strlcpy(y, save, MAXPATHLEN);
695 while ((*x++ = *y++) != '/') {}
697 parent_dirscan = False;
698 if (DEBUG_GTE(FILTER, 2)) {
699 rprintf(FINFO, "[%s] completed parent_dirscan for mergelist #%d%s\n",
700 who_am_i(), mergelist_num, lp->debug_type);
706 struct local_filter_state {
708 filter_rule_list mergelists[1];
711 /* Each time rsync changes to a new directory it call this function to
712 * handle all the per-dir merge-files. The "dir" value is the current path
713 * relative to curr_dir (which might not be null-terminated). We copy it
714 * into dirbuf so that we can easily append a file name on the end. */
715 void *push_local_filters(const char *dir, unsigned int dirlen)
717 struct local_filter_state *push;
720 set_filter_dir(dir, dirlen);
721 if (DEBUG_GTE(FILTER, 2)) {
722 rprintf(FINFO, "[%s] pushing local filters for %s\n",
726 if (!mergelist_cnt) {
727 /* No old state to save and no new merge files to push. */
731 push = (struct local_filter_state *)new_array(char,
732 sizeof (struct local_filter_state)
733 + (mergelist_cnt-1) * sizeof (filter_rule_list));
735 push->mergelist_cnt = mergelist_cnt;
736 for (i = 0; i < mergelist_cnt; i++) {
737 filter_rule *ex = mergelist_parents[i];
740 memcpy(&push->mergelists[i], ex->u.mergelist, sizeof (filter_rule_list));
743 /* Note: parse_filter_file() might increase mergelist_cnt, so keep
744 * this loop separate from the above loop. */
745 for (i = 0; i < mergelist_cnt; i++) {
746 filter_rule *ex = mergelist_parents[i];
747 filter_rule_list *lp;
750 lp = ex->u.mergelist;
752 if (DEBUG_GTE(FILTER, 2)) {
753 rprintf(FINFO, "[%s] pushing mergelist #%d%s\n",
754 who_am_i(), i, lp->debug_type);
757 lp->tail = NULL; /* Switch any local rules to inherited. */
758 if (ex->rflags & FILTRULE_NO_INHERIT)
761 if (ex->rflags & FILTRULE_FINISH_SETUP) {
762 ex->rflags &= ~FILTRULE_FINISH_SETUP;
763 if (setup_merge_file(i, ex, lp))
764 set_filter_dir(dir, dirlen);
767 if (strlcpy(dirbuf + dirbuf_len, ex->pattern,
768 MAXPATHLEN - dirbuf_len) < MAXPATHLEN - dirbuf_len) {
769 parse_filter_file(lp, dirbuf, ex,
772 io_error |= IOERR_GENERAL;
774 "cannot add local filter rules in long-named directory: %s\n",
777 dirbuf[dirbuf_len] = '\0';
783 void pop_local_filters(void *mem)
785 struct local_filter_state *pop = (struct local_filter_state *)mem;
787 int old_mergelist_cnt = pop ? pop->mergelist_cnt : 0;
789 if (DEBUG_GTE(FILTER, 2))
790 rprintf(FINFO, "[%s] popping local filters\n", who_am_i());
792 for (i = mergelist_cnt; i-- > 0; ) {
793 filter_rule *ex = mergelist_parents[i];
794 filter_rule_list *lp;
797 lp = ex->u.mergelist;
799 if (DEBUG_GTE(FILTER, 2)) {
800 rprintf(FINFO, "[%s] popping mergelist #%d%s\n",
801 who_am_i(), i, lp->debug_type);
805 if (i >= old_mergelist_cnt && lp->head) {
806 /* This mergelist does not exist in the state to be restored, but it
807 * still has inherited rules. This can sometimes happen if a per-dir
808 * merge file calls setup_merge_file() in push_local_filters() and that
809 * leaves some inherited rules that aren't in the pushed list state. */
810 if (DEBUG_GTE(FILTER, 2)) {
811 rprintf(FINFO, "[%s] freeing parent_dirscan filters of mergelist #%d%s\n",
812 who_am_i(), i, ex->u.mergelist->debug_type);
819 return; /* No state to restore. */
821 for (i = 0; i < old_mergelist_cnt; i++) {
822 filter_rule *ex = mergelist_parents[i];
825 memcpy(ex->u.mergelist, &pop->mergelists[i], sizeof (filter_rule_list));
831 void change_local_filter_dir(const char *dname, int dlen, int dir_depth)
833 static int cur_depth = -1;
834 static void *filt_array[MAXPATHLEN/2+1];
837 for ( ; cur_depth >= 0; cur_depth--) {
838 if (filt_array[cur_depth]) {
839 pop_local_filters(filt_array[cur_depth]);
840 filt_array[cur_depth] = NULL;
846 assert(dir_depth < MAXPATHLEN/2+1);
848 for ( ; cur_depth >= dir_depth; cur_depth--) {
849 if (filt_array[cur_depth]) {
850 pop_local_filters(filt_array[cur_depth]);
851 filt_array[cur_depth] = NULL;
855 cur_depth = dir_depth;
856 filt_array[cur_depth] = push_local_filters(dname, dlen);
859 static int rule_matches(const char *fname, filter_rule *ex, int name_flags)
861 int slash_handling, str_cnt = 0, anchored_match = 0;
862 int ret_match = ex->rflags & FILTRULE_NEGATE ? 0 : 1;
863 char *p, *pattern = ex->pattern;
864 const char *strings[16]; /* more than enough */
865 const char *name = fname + (*fname == '/');
870 if (!(name_flags & NAME_IS_XATTR) ^ !(ex->rflags & FILTRULE_XATTR))
873 if (!ex->u.slash_cnt && !(ex->rflags & FILTRULE_WILD2)) {
874 /* If the pattern does not have any slashes AND it does
875 * not have a "**" (which could match a slash), then we
876 * just match the name portion of the path. */
877 if ((p = strrchr(name,'/')) != NULL)
879 } else if (ex->rflags & FILTRULE_ABS_PATH && *fname != '/'
880 && curr_dir_len > module_dirlen + 1) {
881 /* If we're matching against an absolute-path pattern,
882 * we need to prepend our full path info. */
883 strings[str_cnt++] = curr_dir + module_dirlen + 1;
884 strings[str_cnt++] = "/";
885 } else if (ex->rflags & FILTRULE_WILD2_PREFIX && *fname != '/') {
886 /* Allow "**"+"/" to match at the start of the string. */
887 strings[str_cnt++] = "/";
889 strings[str_cnt++] = name;
890 if (name_flags & NAME_IS_DIR) {
891 /* Allow a trailing "/"+"***" to match the directory. */
892 if (ex->rflags & FILTRULE_WILD3_SUFFIX)
893 strings[str_cnt++] = "/";
894 } else if (ex->rflags & FILTRULE_DIRECTORY)
896 strings[str_cnt] = NULL;
898 if (*pattern == '/') {
903 if (!anchored_match && ex->u.slash_cnt
904 && !(ex->rflags & FILTRULE_WILD2)) {
905 /* A non-anchored match with an infix slash and no "**"
906 * needs to match the last slash_cnt+1 name elements. */
907 slash_handling = ex->u.slash_cnt + 1;
908 } else if (!anchored_match && !(ex->rflags & FILTRULE_WILD2_PREFIX)
909 && ex->rflags & FILTRULE_WILD2) {
910 /* A non-anchored match with an infix or trailing "**" (but not
911 * a prefixed "**") needs to try matching after every slash. */
914 /* The pattern matches only at the start of the path or name. */
918 if (ex->rflags & FILTRULE_WILD) {
919 if (wildmatch_array(pattern, strings, slash_handling))
921 } else if (str_cnt > 1) {
922 if (litmatch_array(pattern, strings, slash_handling))
924 } else if (anchored_match) {
925 if (strcmp(name, pattern) == 0)
928 int l1 = strlen(name);
929 int l2 = strlen(pattern);
931 strcmp(name+(l1-l2),pattern) == 0 &&
932 (l1==l2 || name[l1-(l2+1)] == '/')) {
940 static void report_filter_result(enum logcode code, char const *name,
941 filter_rule const *ent,
942 int name_flags, const char *type)
944 int log_level = am_sender || am_generator ? 1 : 3;
946 /* If a trailing slash is present to match only directories,
947 * then it is stripped out by add_rule(). So as a special
948 * case we add it back in the log output. */
949 if (DEBUG_GTE(FILTER, log_level)) {
950 static char *actions[2][2]
951 = { {"show", "hid"}, {"risk", "protect"} };
952 const char *w = who_am_i();
953 const char *t = name_flags & NAME_IS_XATTR ? "xattr"
954 : name_flags & NAME_IS_DIR ? "directory"
956 rprintf(code, "[%s] %sing %s %s because of pattern %s%s%s\n",
957 w, actions[*w=='g'][!(ent->rflags & FILTRULE_INCLUDE)],
958 t, name, ent->pattern,
959 ent->rflags & FILTRULE_DIRECTORY ? "/" : "", type);
963 /* This function is used to check if a file should be included/excluded
964 * from the list of files based on its name and type etc. The value of
965 * filter_level is set to either SERVER_FILTERS or ALL_FILTERS. */
966 int name_is_excluded(const char *fname, int name_flags, int filter_level)
968 if (daemon_filter_list.head && check_filter(&daemon_filter_list, FLOG, fname, name_flags) < 0) {
969 if (!(name_flags & NAME_IS_XATTR))
974 if (filter_level != ALL_FILTERS)
977 if (filter_list.head && check_filter(&filter_list, FINFO, fname, name_flags) < 0)
983 /* Return -1 if file "name" is defined to be excluded by the specified
984 * exclude list, 1 if it is included, and 0 if it was not matched. */
985 int check_filter(filter_rule_list *listp, enum logcode code,
986 const char *name, int name_flags)
990 for (ent = listp->head; ent; ent = ent->next) {
991 if (ignore_perishable && ent->rflags & FILTRULE_PERISHABLE)
993 if (ent->rflags & FILTRULE_PERDIR_MERGE) {
994 int rc = check_filter(ent->u.mergelist, code, name, name_flags);
999 if (ent->rflags & FILTRULE_CVS_IGNORE) {
1000 int rc = check_filter(&cvs_filter_list, code, name, name_flags);
1005 if (rule_matches(name, ent, name_flags)) {
1006 report_filter_result(code, name, ent, name_flags, listp->debug_type);
1007 return ent->rflags & FILTRULE_INCLUDE ? 1 : -1;
1014 #define RULE_STRCMP(s,r) rule_strcmp((s), (r), sizeof (r) - 1)
1016 static const uchar *rule_strcmp(const uchar *str, const char *rule, int rule_len)
1018 if (strncmp((char*)str, rule, rule_len) != 0)
1020 if (isspace(str[rule_len]) || str[rule_len] == '_' || !str[rule_len])
1021 return str + rule_len - 1;
1022 if (str[rule_len] == ',')
1023 return str + rule_len;
1027 #define FILTRULES_FROM_CONTAINER (FILTRULE_ABS_PATH | FILTRULE_INCLUDE \
1028 | FILTRULE_DIRECTORY | FILTRULE_NEGATE \
1029 | FILTRULE_PERISHABLE)
1031 /* Gets the next include/exclude rule from *rulestr_ptr and advances
1032 * *rulestr_ptr to point beyond it. Stores the pattern's start (within
1033 * *rulestr_ptr) and length in *pat_ptr and *pat_len_ptr, and returns a newly
1034 * allocated filter_rule containing the rest of the information. Returns
1035 * NULL if there are no more rules in the input.
1037 * The template provides defaults for the new rule to inherit, and the
1038 * template rflags and the xflags additionally affect parsing. */
1039 static filter_rule *parse_rule_tok(const char **rulestr_ptr,
1040 const filter_rule *template, int xflags,
1041 const char **pat_ptr, unsigned int *pat_len_ptr)
1043 const uchar *s = (const uchar *)*rulestr_ptr;
1047 if (template->rflags & FILTRULE_WORD_SPLIT) {
1048 /* Skip over any initial whitespace. */
1051 /* Update to point to real start of rule. */
1052 *rulestr_ptr = (const char *)s;
1057 rule = new0(filter_rule);
1059 /* Inherit from the template. Don't inherit FILTRULES_SIDES; we check
1061 rule->rflags = template->rflags & FILTRULES_FROM_CONTAINER;
1063 /* Figure out what kind of a filter rule "s" is pointing at. Note
1064 * that if FILTRULE_NO_PREFIXES is set, the rule is either an include
1065 * or an exclude based on the inheritance of the FILTRULE_INCLUDE
1066 * flag (above). XFLG_OLD_PREFIXES indicates a compatibility mode
1067 * for old include/exclude patterns where just "+ " and "- " are
1068 * allowed as optional prefixes. */
1069 if (template->rflags & FILTRULE_NO_PREFIXES) {
1070 if (*s == '!' && template->rflags & FILTRULE_CVS_IGNORE)
1071 rule->rflags |= FILTRULE_CLEAR_LIST; /* Tentative! */
1072 } else if (xflags & XFLG_OLD_PREFIXES) {
1073 if (*s == '-' && s[1] == ' ') {
1074 rule->rflags &= ~FILTRULE_INCLUDE;
1076 } else if (*s == '+' && s[1] == ' ') {
1077 rule->rflags |= FILTRULE_INCLUDE;
1079 } else if (*s == '!')
1080 rule->rflags |= FILTRULE_CLEAR_LIST; /* Tentative! */
1083 BOOL prefix_specifies_side = False;
1086 if ((s = RULE_STRCMP(s, "clear")) != NULL)
1090 if ((s = RULE_STRCMP(s, "dir-merge")) != NULL)
1094 if ((s = RULE_STRCMP(s, "exclude")) != NULL)
1098 if ((s = RULE_STRCMP(s, "hide")) != NULL)
1102 if ((s = RULE_STRCMP(s, "include")) != NULL)
1106 if ((s = RULE_STRCMP(s, "merge")) != NULL)
1110 if ((s = RULE_STRCMP(s, "protect")) != NULL)
1114 if ((s = RULE_STRCMP(s, "risk")) != NULL)
1118 if ((s = RULE_STRCMP(s, "show")) != NULL)
1129 trust_sender_filter = 1;
1130 rule->rflags |= FILTRULE_PERDIR_MERGE
1131 | FILTRULE_FINISH_SETUP;
1134 rule->rflags |= FILTRULE_MERGE_FILE;
1137 rule->rflags |= FILTRULE_INCLUDE;
1142 rule->rflags |= FILTRULE_INCLUDE;
1145 rule->rflags |= FILTRULE_SENDER_SIDE;
1146 prefix_specifies_side = True;
1149 rule->rflags |= FILTRULE_INCLUDE;
1152 rule->rflags |= FILTRULE_RECEIVER_SIDE;
1153 prefix_specifies_side = True;
1156 rule->rflags |= FILTRULE_CLEAR_LIST;
1159 rprintf(FERROR, "Unknown filter rule: `%s'\n", *rulestr_ptr);
1160 exit_cleanup(RERR_SYNTAX);
1162 while (ch != '!' && *++s && *s != ' ' && *s != '_') {
1163 if (template->rflags & FILTRULE_WORD_SPLIT && isspace(*s)) {
1171 "invalid modifier '%c' at position %d in filter rule: %s\n",
1172 *s, (int)(s - (const uchar *)*rulestr_ptr), *rulestr_ptr);
1173 exit_cleanup(RERR_SYNTAX);
1175 if (!BITS_SETnUNSET(rule->rflags, FILTRULE_MERGE_FILE, FILTRULE_NO_PREFIXES))
1177 rule->rflags |= FILTRULE_NO_PREFIXES;
1180 if (!BITS_SETnUNSET(rule->rflags, FILTRULE_MERGE_FILE, FILTRULE_NO_PREFIXES))
1182 rule->rflags |= FILTRULE_NO_PREFIXES
1186 rule->rflags |= FILTRULE_ABS_PATH;
1189 /* Negation really goes with the pattern, so it
1190 * isn't useful as a merge-file default. */
1191 if (rule->rflags & FILTRULE_MERGE_FILE)
1193 rule->rflags |= FILTRULE_NEGATE;
1196 if (rule->rflags & FILTRULE_NO_PREFIXES || prefix_specifies_side)
1198 rule->rflags |= FILTRULE_NO_PREFIXES
1199 | FILTRULE_WORD_SPLIT
1200 | FILTRULE_NO_INHERIT
1201 | FILTRULE_CVS_IGNORE;
1204 if (!(rule->rflags & FILTRULE_MERGE_FILE))
1206 rule->rflags |= FILTRULE_EXCLUDE_SELF;
1209 if (!(rule->rflags & FILTRULE_MERGE_FILE))
1211 rule->rflags |= FILTRULE_NO_INHERIT;
1214 rule->rflags |= FILTRULE_PERISHABLE;
1217 if (prefix_specifies_side)
1219 rule->rflags |= FILTRULE_RECEIVER_SIDE;
1222 if (prefix_specifies_side)
1224 rule->rflags |= FILTRULE_SENDER_SIDE;
1227 if (!(rule->rflags & FILTRULE_MERGE_FILE))
1229 rule->rflags |= FILTRULE_WORD_SPLIT;
1232 rule->rflags |= FILTRULE_XATTR;
1233 saw_xattr_filter = 1;
1240 if (template->rflags & FILTRULES_SIDES) {
1241 if (rule->rflags & FILTRULES_SIDES) {
1242 /* The filter and template both specify side(s). This
1243 * is dodgy (and won't work correctly if the template is
1244 * a one-sided per-dir merge rule), so reject it. */
1246 "specified-side merge file contains specified-side filter: %s\n",
1248 exit_cleanup(RERR_SYNTAX);
1250 rule->rflags |= template->rflags & FILTRULES_SIDES;
1253 if (template->rflags & FILTRULE_WORD_SPLIT) {
1254 const uchar *cp = s;
1255 /* Token ends at whitespace or the end of the string. */
1256 while (!isspace(*cp) && *cp != '\0')
1260 len = strlen((char*)s);
1262 if (rule->rflags & FILTRULE_CLEAR_LIST) {
1263 if (!(rule->rflags & FILTRULE_NO_PREFIXES)
1264 && !(xflags & XFLG_OLD_PREFIXES) && len) {
1266 "'!' rule has trailing characters: %s\n", *rulestr_ptr);
1267 exit_cleanup(RERR_SYNTAX);
1270 rule->rflags &= ~FILTRULE_CLEAR_LIST;
1271 } else if (!len && !(rule->rflags & FILTRULE_CVS_IGNORE)) {
1272 rprintf(FERROR, "unexpected end of filter rule: %s\n", *rulestr_ptr);
1273 exit_cleanup(RERR_SYNTAX);
1276 /* --delete-excluded turns an un-modified include/exclude into a sender-side rule. */
1278 && !(rule->rflags & (FILTRULES_SIDES|FILTRULE_MERGE_FILE|FILTRULE_PERDIR_MERGE)))
1279 rule->rflags |= FILTRULE_SENDER_SIDE;
1281 *pat_ptr = (const char *)s;
1283 *rulestr_ptr = *pat_ptr + len;
1287 static void get_cvs_excludes(uint32 rflags)
1289 static int initialized = 0;
1290 char *p, fname[MAXPATHLEN];
1296 parse_filter_str(&cvs_filter_list, default_cvsignore(),
1297 rule_template(rflags | (protocol_version >= 30 ? FILTRULE_PERISHABLE : 0)),
1300 p = module_id >= 0 && lp_use_chroot(module_id) ? "/" : getenv("HOME");
1301 if (p && pathjoin(fname, MAXPATHLEN, p, ".cvsignore") < MAXPATHLEN)
1302 parse_filter_file(&cvs_filter_list, fname, rule_template(rflags), 0);
1304 parse_filter_str(&cvs_filter_list, getenv("CVSIGNORE"), rule_template(rflags), 0);
1307 const filter_rule *rule_template(uint32 rflags)
1309 static filter_rule template; /* zero-initialized */
1310 template.rflags = rflags;
1314 void parse_filter_str(filter_rule_list *listp, const char *rulestr,
1315 const filter_rule *template, int xflags)
1319 unsigned int pat_len;
1327 /* Remember that the returned string is NOT '\0' terminated! */
1328 if (!(rule = parse_rule_tok(&rulestr, template, xflags, &pat, &pat_len)))
1331 if (pat_len >= MAXPATHLEN) {
1332 rprintf(FERROR, "discarding over-long filter: %.*s\n",
1339 new_rflags = rule->rflags;
1340 if (new_rflags & FILTRULE_CLEAR_LIST) {
1341 if (DEBUG_GTE(FILTER, 2)) {
1343 "[%s] clearing filter list%s\n",
1344 who_am_i(), listp->debug_type);
1346 pop_filter_list(listp);
1351 if (new_rflags & FILTRULE_MERGE_FILE) {
1356 if (new_rflags & FILTRULE_EXCLUDE_SELF) {
1358 filter_rule *excl_self;
1360 excl_self = new0(filter_rule);
1361 /* Find the beginning of the basename and add an exclude for it. */
1362 for (name = pat + pat_len; name > pat && name[-1] != '/'; name--) {}
1363 add_rule(listp, name, (pat + pat_len) - name, excl_self, 0);
1364 rule->rflags &= ~FILTRULE_EXCLUDE_SELF;
1366 if (new_rflags & FILTRULE_PERDIR_MERGE) {
1367 if (parent_dirscan) {
1369 unsigned int len = pat_len;
1370 if ((p = parse_merge_name(pat, &len, module_dirlen)))
1371 add_rule(listp, p, len, rule, 0);
1378 unsigned int len = pat_len;
1379 if ((p = parse_merge_name(pat, &len, 0)))
1380 parse_filter_file(listp, p, rule, XFLG_FATAL_ERRORS);
1386 add_rule(listp, pat, pat_len, rule, xflags);
1388 if (new_rflags & FILTRULE_CVS_IGNORE
1389 && !(new_rflags & FILTRULE_MERGE_FILE))
1390 get_cvs_excludes(new_rflags);
1394 void parse_filter_file(filter_rule_list *listp, const char *fname, const filter_rule *template, int xflags)
1397 char line[BIGPATHBUFLEN];
1398 char *eob = line + sizeof line - 1;
1399 BOOL word_split = (template->rflags & FILTRULE_WORD_SPLIT) != 0;
1401 if (!fname || !*fname)
1404 if (*fname != '-' || fname[1] || am_server) {
1405 if (daemon_filter_list.head) {
1406 strlcpy(line, fname, sizeof line);
1407 clean_fname(line, CFN_COLLAPSE_DOT_DOT_DIRS);
1408 if (check_filter(&daemon_filter_list, FLOG, line, 0) < 0)
1411 fp = fopen(line, "rb");
1413 fp = fopen(fname, "rb");
1417 if (DEBUG_GTE(FILTER, 2)) {
1418 rprintf(FINFO, "[%s] parse_filter_file(%s,%x,%x)%s\n",
1419 who_am_i(), fname, template->rflags, xflags,
1420 fp ? "" : " [not found]");
1424 if (xflags & XFLG_FATAL_ERRORS) {
1425 rsyserr(FERROR, errno,
1426 "failed to open %sclude file %s",
1427 template->rflags & FILTRULE_INCLUDE ? "in" : "ex",
1429 exit_cleanup(RERR_FILEIO);
1433 dirbuf[dirbuf_len] = '\0';
1437 int ch, overflow = 0;
1439 if ((ch = getc(fp)) == EOF) {
1440 if (ferror(fp) && errno == EINTR) {
1446 if (word_split && isspace(ch))
1448 if (eol_nulls? !ch : (ch == '\n' || ch == '\r'))
1456 rprintf(FERROR, "discarding over-long filter: %s...\n", line);
1460 /* Skip an empty token and (when line parsing) comments. */
1461 if (*line && (word_split || (*line != ';' && *line != '#')))
1462 parse_filter_str(listp, line, template, xflags);
1469 /* If the "for_xfer" flag is set, the prefix is made compatible with the
1470 * current protocol_version (if possible) or a NULL is returned (if not
1472 char *get_rule_prefix(filter_rule *rule, const char *pat, int for_xfer,
1473 unsigned int *plen_ptr)
1475 static char buf[MAX_RULE_PREFIX+1];
1477 int legal_len = for_xfer && protocol_version < 29 ? 1 : MAX_RULE_PREFIX-1;
1479 if (rule->rflags & FILTRULE_PERDIR_MERGE) {
1483 } else if (rule->rflags & FILTRULE_INCLUDE)
1485 else if (legal_len != 1
1486 || ((*pat == '-' || *pat == '+') && pat[1] == ' '))
1491 if (rule->rflags & FILTRULE_ABS_PATH)
1493 if (rule->rflags & FILTRULE_NEGATE)
1495 if (rule->rflags & FILTRULE_CVS_IGNORE)
1498 if (rule->rflags & FILTRULE_NO_INHERIT)
1500 if (rule->rflags & FILTRULE_WORD_SPLIT)
1502 if (rule->rflags & FILTRULE_NO_PREFIXES) {
1503 if (rule->rflags & FILTRULE_INCLUDE)
1509 if (rule->rflags & FILTRULE_EXCLUDE_SELF)
1511 if (rule->rflags & FILTRULE_XATTR)
1513 if (rule->rflags & FILTRULE_SENDER_SIDE
1514 && (!for_xfer || protocol_version >= 29))
1516 if (rule->rflags & FILTRULE_RECEIVER_SIDE
1517 && (!for_xfer || protocol_version >= 29
1518 || (delete_excluded && am_sender)))
1520 if (rule->rflags & FILTRULE_PERISHABLE) {
1521 if (!for_xfer || protocol_version >= 30)
1526 if (op - buf > legal_len)
1532 *plen_ptr = op - buf;
1536 static void send_rules(int f_out, filter_rule_list *flp)
1538 filter_rule *ent, *prev = NULL;
1540 for (ent = flp->head; ent; ent = ent->next) {
1541 unsigned int len, plen, dlen;
1545 /* Note we need to check delete_excluded here in addition to
1546 * the code in parse_rule_tok() because some rules may have
1547 * been added before we found the --delete-excluded option.
1548 * We must also elide any CVS merge-file rules to avoid a
1549 * backward compatibility problem, and we elide any no-prefix
1550 * merge files as an optimization (since they can only have
1551 * include/exclude rules). */
1552 if (ent->rflags & FILTRULE_SENDER_SIDE)
1553 elide = am_sender ? 1 : -1;
1554 if (ent->rflags & FILTRULE_RECEIVER_SIDE)
1555 elide = elide ? 0 : am_sender ? -1 : 1;
1556 else if (delete_excluded && !elide
1557 && (!(ent->rflags & FILTRULE_PERDIR_MERGE)
1558 || ent->rflags & FILTRULE_NO_PREFIXES))
1559 elide = am_sender ? 1 : -1;
1562 prev->next = ent->next;
1564 flp->head = ent->next;
1569 if (ent->rflags & FILTRULE_CVS_IGNORE
1570 && !(ent->rflags & FILTRULE_MERGE_FILE)) {
1571 int f = am_sender || protocol_version < 29 ? f_out : -2;
1572 send_rules(f, &cvs_filter_list);
1576 p = get_rule_prefix(ent, ent->pattern, 1, &plen);
1579 "filter rules are too modern for remote rsync.\n");
1580 exit_cleanup(RERR_PROTOCOL);
1584 len = strlen(ent->pattern);
1585 dlen = ent->rflags & FILTRULE_DIRECTORY ? 1 : 0;
1586 if (!(plen + len + dlen))
1588 write_int(f_out, plen + len + dlen);
1590 write_buf(f_out, p, plen);
1591 write_buf(f_out, ent->pattern, len);
1593 write_byte(f_out, '/');
1598 /* This is only called by the client. */
1599 void send_filter_list(int f_out)
1601 int receiver_wants_list = prune_empty_dirs
1602 || (delete_mode && (!delete_excluded || protocol_version >= 29));
1604 if (local_server || (am_sender && !receiver_wants_list))
1606 if (cvs_exclude && am_sender) {
1607 if (protocol_version >= 29)
1608 parse_filter_str(&filter_list, ":C", rule_template(0), 0);
1609 parse_filter_str(&filter_list, "-C", rule_template(0), 0);
1612 send_rules(f_out, &filter_list);
1615 write_int(f_out, 0);
1618 if (!am_sender || protocol_version < 29)
1619 parse_filter_str(&filter_list, ":C", rule_template(0), 0);
1621 parse_filter_str(&filter_list, "-C", rule_template(0), 0);
1625 /* This is only called by the server. */
1626 void recv_filter_list(int f_in)
1628 char line[BIGPATHBUFLEN];
1629 int xflags = protocol_version >= 29 ? 0 : XFLG_OLD_PREFIXES;
1630 int receiver_wants_list = prune_empty_dirs
1631 || (delete_mode && (!delete_excluded || protocol_version >= 29));
1634 if (!local_server && (am_sender || receiver_wants_list)) {
1635 while ((len = read_int(f_in)) != 0) {
1636 if (len >= sizeof line)
1637 overflow_exit("recv_rules");
1638 read_sbuf(f_in, line, len);
1639 parse_filter_str(&filter_list, line, rule_template(0), xflags);
1644 if (local_server || am_sender || protocol_version < 29)
1645 parse_filter_str(&filter_list, ":C", rule_template(0), 0);
1646 if (local_server || am_sender)
1647 parse_filter_str(&filter_list, "-C", rule_template(0), 0);
1650 if (local_server) /* filter out any rules that aren't for us. */
1651 send_rules(-1, &filter_list);