1 /* -*- c-file-style: "linux" -*-
3 * Copyright (C) 1996-2001 by Andrew Tridgell <tridge@samba.org>
4 * Copyright (C) 1996 by Paul Mackerras
5 * Copyright (C) 2002 by Martin Pool
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 /* a lot of this stuff was originally derived from GNU tar, although
23 it has now changed so much that it is hard to tell :) */
25 /* include/exclude cluestick added by Martin Pool <mbp@samba.org> */
36 extern int local_server;
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;
44 extern char curr_dir[];
45 extern unsigned int curr_dir_len;
46 extern unsigned int module_dirlen;
48 struct filter_list_struct filter_list = { 0, 0, "" };
49 struct filter_list_struct cvs_filter_list = { 0, 0, " [cvsignore]" };
50 struct filter_list_struct server_filter_list = { 0, 0, " [server]" };
52 /* Need room enough for ":MODS " prefix plus some room to grow. */
53 #define MAX_RULE_PREFIX (16)
55 #define MODIFIERS_MERGE_FILE "-+Cenw"
56 #define MODIFIERS_INCL_EXCL "/!C"
58 /* The dirbuf is set by push_local_filters() to the current subdirectory
59 * relative to curr_dir that is being processed. The path always has a
60 * trailing slash appended, and the variable dirbuf_len contains the length
61 * of this path prefix. The path is always absolute. */
62 static char dirbuf[MAXPATHLEN+1];
63 static unsigned int dirbuf_len = 0;
64 static int dirbuf_depth;
66 /* This is True when we're scanning parent dirs for per-dir merge-files. */
67 static BOOL parent_dirscan = False;
69 /* This array contains a list of all the currently active per-dir merge
70 * files. This makes it easier to save the appropriate values when we
71 * "push" down into each subdirectory. */
72 static struct filter_struct **mergelist_parents;
73 static int mergelist_cnt = 0;
74 static int mergelist_size = 0;
76 /* Each filter_list_struct describes a singly-linked list by keeping track
77 * of both the head and tail pointers. The list is slightly unusual in that
78 * a parent-dir's content can be appended to the end of the local list in a
79 * special way: the last item in the local list has its "next" pointer set
80 * to point to the inherited list, but the local list's tail pointer points
81 * at the end of the local list. Thus, if the local list is empty, the head
82 * will be pointing at the inherited content but the tail will be NULL. To
83 * help you visualize this, here are the possible list arrangements:
85 * Completely Empty Local Content Only
86 * ================================== ====================================
87 * head -> NULL head -> Local1 -> Local2 -> NULL
88 * tail -> NULL tail -------------^
90 * Inherited Content Only Both Local and Inherited Content
91 * ================================== ====================================
92 * head -> Parent1 -> Parent2 -> NULL head -> L1 -> L2 -> P1 -> P2 -> NULL
93 * tail -> NULL tail ---------^
95 * This means that anyone wanting to traverse the whole list to use it just
96 * needs to start at the head and use the "next" pointers until it goes
97 * NULL. To add new local content, we insert the item after the tail item
98 * and update the tail (obviously, if "tail" was NULL, we insert it at the
99 * head). To clear the local list, WE MUST NOT FREE THE INHERITED CONTENT
100 * because it is shared between the current list and our parent list(s).
101 * The easiest way to handle this is to simply truncate the list after the
102 * tail item and then free the local list from the head. When inheriting
103 * the list for a new local dir, we just save off the filter_list_struct
104 * values (so we can pop back to them later) and set the tail to NULL.
107 static void free_filter(struct filter_struct *ex)
109 if (ex->match_flags & MATCHFLG_PERDIR_MERGE) {
110 free(ex->u.mergelist->debug_type);
111 free(ex->u.mergelist);
118 /* Build a filter structure given a filter pattern. The value in "pat"
119 * is not null-terminated. */
120 static void add_rule(struct filter_list_struct *listp, const char *pat,
121 unsigned int pat_len, uint32 mflags, int xflags)
123 struct filter_struct *ret;
128 rprintf(FINFO, "[%s] add_rule(%s%.*s%s)%s\n",
129 who_am_i(), get_rule_prefix(mflags, pat, 0, NULL),
131 (mflags & MATCHFLG_DIRECTORY) ? "/" : "",
135 if (!(ret = new(struct filter_struct)))
136 out_of_memory("add_rule");
137 memset(ret, 0, sizeof ret[0]);
139 if (xflags & XFLG_ANCHORED2ABS && *pat == '/'
140 && !(mflags & (MATCHFLG_ABS_PATH | MATCHFLG_MERGE_FILE))) {
141 mflags |= MATCHFLG_ABS_PATH;
142 ex_len = dirbuf_len - module_dirlen - 1;
145 if (!(ret->pattern = new_array(char, ex_len + pat_len + 1)))
146 out_of_memory("add_rule");
148 memcpy(ret->pattern, dirbuf + module_dirlen, ex_len);
149 strlcpy(ret->pattern + ex_len, pat, pat_len + 1);
152 if (strpbrk(ret->pattern, "*[?")) {
153 mflags |= MATCHFLG_WILD;
154 if ((cp = strstr(ret->pattern, "**")) != NULL) {
155 mflags |= MATCHFLG_WILD2;
156 /* If the pattern starts with **, note that. */
157 if (cp == ret->pattern)
158 mflags |= MATCHFLG_WILD2_PREFIX;
162 if (pat_len > 1 && ret->pattern[pat_len-1] == '/') {
163 ret->pattern[pat_len-1] = 0;
164 mflags |= MATCHFLG_DIRECTORY;
167 if (mflags & MATCHFLG_PERDIR_MERGE) {
168 struct filter_list_struct *lp;
172 if ((cp = strrchr(ret->pattern, '/')) != NULL)
177 /* If the local merge file was already mentioned, don't
179 for (i = 0; i < mergelist_cnt; i++) {
180 struct filter_struct *ex = mergelist_parents[i];
181 const char *s = strrchr(ex->pattern, '/');
187 if (len == pat_len - (cp - ret->pattern)
188 && memcmp(s, cp, len) == 0) {
194 if (!(lp = new_array(struct filter_list_struct, 1)))
195 out_of_memory("add_rule");
196 lp->head = lp->tail = NULL;
197 if (asprintf(&lp->debug_type, " [per-dir %s]", cp) < 0)
198 out_of_memory("add_rule");
199 ret->u.mergelist = lp;
201 if (mergelist_cnt == mergelist_size) {
203 mergelist_parents = realloc_array(mergelist_parents,
204 struct filter_struct *,
206 if (!mergelist_parents)
207 out_of_memory("add_rule");
209 mergelist_parents[mergelist_cnt++] = ret;
211 for (cp = ret->pattern; (cp = strchr(cp, '/')) != NULL; cp++)
215 ret->match_flags = mflags;
218 ret->next = listp->head;
219 listp->head = listp->tail = ret;
221 ret->next = listp->tail->next;
222 listp->tail->next = ret;
227 static void clear_filter_list(struct filter_list_struct *listp)
230 struct filter_struct *ent, *next;
231 /* Truncate any inherited items from the local list. */
232 listp->tail->next = NULL;
233 /* Now free everything that is left. */
234 for (ent = listp->head; ent; ent = next) {
240 listp->head = listp->tail = NULL;
243 /* This returns an expanded (absolute) filename for the merge-file name if
244 * the name has any slashes in it OR if the parent_dirscan var is True;
245 * otherwise it returns the original merge_file name. If the len_ptr value
246 * is non-NULL the merge_file name is limited by the referenced length
247 * value and will be updated with the length of the resulting name. We
248 * always return a name that is null terminated, even if the merge_file
250 static char *parse_merge_name(const char *merge_file, unsigned int *len_ptr,
251 unsigned int prefix_skip)
253 static char buf[MAXPATHLEN];
254 char *fn, tmpbuf[MAXPATHLEN];
257 if (!parent_dirscan && *merge_file != '/') {
258 /* Return the name unchanged it doesn't have any slashes. */
260 const char *p = merge_file + *len_ptr;
261 while (--p > merge_file && *p != '/') {}
262 if (p == merge_file) {
263 strlcpy(buf, merge_file, *len_ptr + 1);
266 } else if (strchr(merge_file, '/') == NULL)
267 return (char *)merge_file;
270 fn = *merge_file == '/' ? buf : tmpbuf;
271 if (sanitize_paths) {
272 const char *r = prefix_skip ? "/" : NULL;
273 /* null-terminate the name if it isn't already */
274 if (len_ptr && merge_file[*len_ptr]) {
275 char *to = fn == buf ? tmpbuf : buf;
276 strlcpy(to, merge_file, *len_ptr + 1);
279 if (!sanitize_path(fn, merge_file, r, dirbuf_depth)) {
280 rprintf(FERROR, "merge-file name overflows: %s\n",
285 strlcpy(fn, merge_file, len_ptr ? *len_ptr + 1 : MAXPATHLEN);
293 if (dirbuf_len + fn_len >= MAXPATHLEN) {
294 rprintf(FERROR, "merge-file name overflows: %s\n", fn);
297 memcpy(buf, dirbuf + prefix_skip, dirbuf_len - prefix_skip);
298 memcpy(buf + dirbuf_len - prefix_skip, fn, fn_len + 1);
299 fn_len = clean_fname(buf, 1);
307 /* Sets the dirbuf and dirbuf_len values. */
308 void set_filter_dir(const char *dir, unsigned int dirlen)
312 memcpy(dirbuf, curr_dir, curr_dir_len);
313 dirbuf[curr_dir_len] = '/';
314 len = curr_dir_len + 1;
315 if (len + dirlen >= MAXPATHLEN)
319 memcpy(dirbuf + len, dir, dirlen);
320 dirbuf[dirlen + len] = '\0';
321 dirbuf_len = clean_fname(dirbuf, 1);
322 if (dirbuf_len > 1 && dirbuf[dirbuf_len-1] == '.'
323 && dirbuf[dirbuf_len-2] == '/')
326 dirbuf[dirbuf_len++] = '/';
327 dirbuf[dirbuf_len] = '\0';
329 dirbuf_depth = count_dir_elements(dirbuf + module_dirlen);
332 /* This routine takes a per-dir merge-file entry and finishes its setup.
333 * If the name has a path portion then we check to see if it refers to a
334 * parent directory of the first transfer dir. If it does, we scan all the
335 * dirs from that point through the parent dir of the transfer dir looking
336 * for the per-dir merge-file in each one. */
337 static BOOL setup_merge_file(struct filter_struct *ex,
338 struct filter_list_struct *lp)
340 char buf[MAXPATHLEN];
341 char *x, *y, *pat = ex->pattern;
344 if (!(x = parse_merge_name(pat, NULL, 0)) || *x != '/')
349 ex->pattern = strdup(y+1);
353 strlcpy(buf, x, MAXPATHLEN);
355 pathjoin(buf, MAXPATHLEN, dirbuf, x);
357 len = clean_fname(buf, 1);
358 if (len != 1 && len < MAXPATHLEN-1) {
362 /* This ensures that the specified dir is a parent of the transfer. */
363 for (x = buf, y = dirbuf; *x && *x == *y; x++, y++) {}
365 y += strlen(y); /* nope -- skip the scan */
367 parent_dirscan = True;
369 char save[MAXPATHLEN];
370 strlcpy(save, y, MAXPATHLEN);
372 dirbuf_len = y - dirbuf;
373 strlcpy(x, ex->pattern, MAXPATHLEN - (x - buf));
374 parse_filter_file(lp, buf, ex->match_flags, XFLG_ANCHORED2ABS);
375 if (ex->match_flags & MATCHFLG_NO_INHERIT)
378 strlcpy(y, save, MAXPATHLEN);
379 while ((*x++ = *y++) != '/') {}
381 parent_dirscan = False;
386 /* Each time rsync changes to a new directory it call this function to
387 * handle all the per-dir merge-files. The "dir" value is the current path
388 * relative to curr_dir (which might not be null-terminated). We copy it
389 * into dirbuf so that we can easily append a file name on the end. */
390 void *push_local_filters(const char *dir, unsigned int dirlen)
392 struct filter_list_struct *ap, *push;
395 set_filter_dir(dir, dirlen);
400 push = new_array(struct filter_list_struct, mergelist_cnt);
402 out_of_memory("push_local_filters");
404 for (i = 0, ap = push; i < mergelist_cnt; i++) {
405 memcpy(ap++, mergelist_parents[i]->u.mergelist,
406 sizeof (struct filter_list_struct));
409 /* Note: parse_filter_file() might increase mergelist_cnt, so keep
410 * this loop separate from the above loop. */
411 for (i = 0; i < mergelist_cnt; i++) {
412 struct filter_struct *ex = mergelist_parents[i];
413 struct filter_list_struct *lp = ex->u.mergelist;
416 rprintf(FINFO, "[%s] pushing filter list%s\n",
417 who_am_i(), lp->debug_type);
420 lp->tail = NULL; /* Switch any local rules to inherited. */
421 if (ex->match_flags & MATCHFLG_NO_INHERIT)
424 if (ex->match_flags & MATCHFLG_FINISH_SETUP) {
425 ex->match_flags &= ~MATCHFLG_FINISH_SETUP;
426 if (setup_merge_file(ex, lp))
427 set_filter_dir(dir, dirlen);
430 if (strlcpy(dirbuf + dirbuf_len, ex->pattern,
431 MAXPATHLEN - dirbuf_len) < MAXPATHLEN - dirbuf_len) {
432 parse_filter_file(lp, dirbuf, ex->match_flags,
435 io_error |= IOERR_GENERAL;
437 "cannot add local filter rules in long-named directory: %s\n",
440 dirbuf[dirbuf_len] = '\0';
446 void pop_local_filters(void *mem)
448 struct filter_list_struct *ap, *pop = (struct filter_list_struct*)mem;
451 for (i = mergelist_cnt; i-- > 0; ) {
452 struct filter_struct *ex = mergelist_parents[i];
453 struct filter_list_struct *lp = ex->u.mergelist;
456 rprintf(FINFO, "[%s] popping filter list%s\n",
457 who_am_i(), lp->debug_type);
460 clear_filter_list(lp);
466 for (i = 0, ap = pop; i < mergelist_cnt; i++) {
467 memcpy(mergelist_parents[i]->u.mergelist, ap++,
468 sizeof (struct filter_list_struct));
474 static int rule_matches(char *name, struct filter_struct *ex, int name_is_dir)
476 char *p, full_name[MAXPATHLEN];
478 int ret_match = ex->match_flags & MATCHFLG_NEGATE ? 0 : 1;
479 char *pattern = ex->pattern;
484 /* If the pattern does not have any slashes AND it does not have
485 * a "**" (which could match a slash), then we just match the
486 * name portion of the path. */
487 if (!ex->u.slash_cnt && !(ex->match_flags & MATCHFLG_WILD2)) {
488 if ((p = strrchr(name,'/')) != NULL)
491 else if (ex->match_flags & MATCHFLG_ABS_PATH && *name != '/'
492 && curr_dir_len > module_dirlen + 1) {
493 pathjoin(full_name, sizeof full_name,
494 curr_dir + module_dirlen + 1, name);
498 if (ex->match_flags & MATCHFLG_DIRECTORY && !name_is_dir)
501 if (*pattern == '/') {
508 if (ex->match_flags & MATCHFLG_WILD) {
509 /* A non-anchored match with an infix slash and no "**"
510 * needs to match the last slash_cnt+1 name elements. */
511 if (!match_start && ex->u.slash_cnt
512 && !(ex->match_flags & MATCHFLG_WILD2)) {
513 int cnt = ex->u.slash_cnt + 1;
514 for (p = name + strlen(name) - 1; p >= name; p--) {
515 if (*p == '/' && !--cnt)
520 if (wildmatch(pattern, name))
522 if (ex->match_flags & MATCHFLG_WILD2_PREFIX) {
523 /* If the **-prefixed pattern has a '/' as the next
524 * character, then try to match the rest of the
525 * pattern at the root. */
526 if (pattern[2] == '/' && wildmatch(pattern+3, name))
529 else if (!match_start && ex->match_flags & MATCHFLG_WILD2) {
530 /* A non-anchored match with an infix or trailing "**"
531 * (but not a prefixed "**") needs to try matching
532 * after every slash. */
533 while ((name = strchr(name, '/')) != NULL) {
535 if (wildmatch(pattern, name))
539 } else if (match_start) {
540 if (strcmp(name,pattern) == 0)
543 int l1 = strlen(name);
544 int l2 = strlen(pattern);
546 strcmp(name+(l1-l2),pattern) == 0 &&
547 (l1==l2 || name[l1-(l2+1)] == '/')) {
556 static void report_filter_result(char const *name,
557 struct filter_struct const *ent,
558 int name_is_dir, const char *type)
560 /* If a trailing slash is present to match only directories,
561 * then it is stripped out by add_rule(). So as a special
562 * case we add it back in here. */
565 rprintf(FINFO, "[%s] %scluding %s %s because of pattern %s%s%s\n",
567 ent->match_flags & MATCHFLG_INCLUDE ? "in" : "ex",
568 name_is_dir ? "directory" : "file", name, ent->pattern,
569 ent->match_flags & MATCHFLG_DIRECTORY ? "/" : "", type);
575 * Return -1 if file "name" is defined to be excluded by the specified
576 * exclude list, 1 if it is included, and 0 if it was not matched.
578 int check_filter(struct filter_list_struct *listp, char *name, int name_is_dir)
580 struct filter_struct *ent;
582 for (ent = listp->head; ent; ent = ent->next) {
583 if (ent->match_flags & MATCHFLG_PERDIR_MERGE) {
584 int rc = check_filter(ent->u.mergelist, name,
590 if (ent->match_flags & MATCHFLG_CVS_IGNORE) {
591 int rc = check_filter(&cvs_filter_list, name,
597 if (rule_matches(name, ent, name_is_dir)) {
598 report_filter_result(name, ent, name_is_dir,
600 return ent->match_flags & MATCHFLG_INCLUDE ? 1 : -1;
608 /* Get the next include/exclude arg from the string. The token will not
609 * be '\0' terminated, so use the returned length to limit the string.
610 * Also, be sure to add this length to the returned pointer before passing
611 * it back to ask for the next token. This routine parses the "!" (list-
612 * clearing) token and (depending on the mflags) the various prefixes.
613 * The *mflags_ptr value will be set on exit to the new MATCHFLG_* bits
614 * for the current token. */
615 static const char *parse_rule_tok(const char *p, uint32 mflags, int xflags,
616 unsigned int *len_ptr, uint32 *mflags_ptr)
618 const uchar *s = (const uchar *)p;
622 if (mflags & MATCHFLG_WORD_SPLIT) {
623 /* Skip over any initial whitespace. */
626 /* Update to point to real start of rule. */
632 new_mflags = mflags & MATCHFLGS_FROM_CONTAINER;
634 /* Figure out what kind of a filter rule "s" is pointing at. Note
635 * that if MATCHFLG_NO_PREFIXES is set, the rule is either an include
636 * or an exclude based on the inheritance of the MATCHFLG_INCLUDE
637 * flag (above). XFLG_OLD_PREFIXES indicates a compatibility mode
638 * for old include/exclude patterns where just "+ " and "- " are
639 * allowed as optional prefixes. */
640 if (mflags & MATCHFLG_NO_PREFIXES) {
642 new_mflags |= MATCHFLG_CLEAR_LIST; /* Tentative! */
643 } else if (xflags & XFLG_OLD_PREFIXES) {
644 if (*s == '-' && s[1] == ' ') {
645 new_mflags &= ~MATCHFLG_INCLUDE;
647 } else if (*s == '+' && s[1] == ' ') {
648 new_mflags |= MATCHFLG_INCLUDE;
652 new_mflags |= MATCHFLG_CLEAR_LIST; /* Tentative! */
657 new_mflags |= MATCHFLG_PERDIR_MERGE
658 | MATCHFLG_FINISH_SETUP;
661 new_mflags |= MATCHFLG_MERGE_FILE;
662 mods = MODIFIERS_INCL_EXCL MODIFIERS_MERGE_FILE;
665 new_mflags |= MATCHFLG_INCLUDE;
668 mods = MODIFIERS_INCL_EXCL;
671 new_mflags |= MATCHFLG_CLEAR_LIST;
675 rprintf(FERROR, "Unknown filter rule: %s\n", p);
676 exit_cleanup(RERR_SYNTAX);
678 while (mods && *++s && *s != ' ' && *s != '_') {
679 if (strchr(mods, *s) == NULL) {
680 if (mflags & MATCHFLG_WORD_SPLIT && isspace(*s)) {
686 "invalid modifier sequence at '%c' in filter rule: %s\n",
688 exit_cleanup(RERR_SYNTAX);
692 if (new_mflags & MATCHFLG_NO_PREFIXES)
694 new_mflags |= MATCHFLG_NO_PREFIXES;
697 if (new_mflags & MATCHFLG_NO_PREFIXES)
699 new_mflags |= MATCHFLG_NO_PREFIXES
703 new_mflags |= MATCHFLG_ABS_PATH;
706 new_mflags |= MATCHFLG_NEGATE;
709 if (new_mflags & MATCHFLG_NO_PREFIXES)
711 new_mflags |= MATCHFLG_NO_PREFIXES
712 | MATCHFLG_WORD_SPLIT
713 | MATCHFLG_NO_INHERIT
714 | MATCHFLG_CVS_IGNORE;
717 new_mflags |= MATCHFLG_EXCLUDE_SELF;
720 new_mflags |= MATCHFLG_NO_INHERIT;
723 new_mflags |= MATCHFLG_WORD_SPLIT;
731 if (mflags & MATCHFLG_WORD_SPLIT) {
733 /* Token ends at whitespace or the end of the string. */
734 while (!isspace(*cp) && *cp != '\0')
738 len = strlen((char*)s);
740 if (new_mflags & MATCHFLG_CLEAR_LIST) {
741 if (!(xflags & XFLG_OLD_PREFIXES) && len) {
743 "'!' rule has trailing characters: %s\n", p);
744 exit_cleanup(RERR_SYNTAX);
747 new_mflags &= ~MATCHFLG_CLEAR_LIST;
748 } else if (!len && !(new_mflags & MATCHFLG_CVS_IGNORE)) {
749 rprintf(FERROR, "unexpected end of filter rule: %s\n", p);
750 exit_cleanup(RERR_SYNTAX);
754 *mflags_ptr = new_mflags;
755 return (const char *)s;
759 static char default_cvsignore[] =
760 /* These default ignored items come from the CVS manual. */
761 "RCS SCCS CVS CVS.adm RCSLOG cvslog.* tags TAGS"
762 " .make.state .nse_depinfo *~ #* .#* ,* _$* *$"
763 " *.old *.bak *.BAK *.orig *.rej .del-*"
764 " *.a *.olb *.o *.obj *.so *.exe"
765 " *.Z *.elc *.ln core"
766 /* The rest we added to suit ourself. */
769 static void get_cvs_excludes(uint32 mflags)
771 char *p, fname[MAXPATHLEN];
772 static int initialized = 0;
778 parse_rule(&cvs_filter_list, default_cvsignore, mflags, 0);
780 p = module_id >= 0 && lp_use_chroot(module_id) ? "/" : getenv("HOME");
781 if (p && pathjoin(fname, MAXPATHLEN, p, ".cvsignore") < MAXPATHLEN)
782 parse_filter_file(&cvs_filter_list, fname, mflags, 0);
784 parse_rule(&cvs_filter_list, getenv("CVSIGNORE"), mflags, 0);
788 void parse_rule(struct filter_list_struct *listp, const char *pattern,
789 uint32 mflags, int xflags)
791 unsigned int pat_len;
799 /* Remember that the returned string is NOT '\0' terminated! */
800 cp = parse_rule_tok(pattern, mflags, xflags,
801 &pat_len, &new_mflags);
804 if (pat_len >= MAXPATHLEN) {
805 rprintf(FERROR, "discarding over-long filter: %s\n",
809 pattern = cp + pat_len;
811 if (new_mflags & MATCHFLG_CLEAR_LIST) {
814 "[%s] clearing filter list%s\n",
815 who_am_i(), listp->debug_type);
817 clear_filter_list(listp);
821 if (new_mflags & MATCHFLG_MERGE_FILE) {
828 if (new_mflags & MATCHFLG_EXCLUDE_SELF) {
829 const char *name = strrchr(cp, '/');
834 add_rule(listp, name, len, 0, 0);
835 new_mflags &= ~MATCHFLG_EXCLUDE_SELF;
838 if (new_mflags & MATCHFLG_PERDIR_MERGE) {
839 if (parent_dirscan) {
840 if (!(p = parse_merge_name(cp, &len,
843 add_rule(listp, p, len, new_mflags, 0);
847 if (!(p = parse_merge_name(cp, &len, 0)))
849 parse_filter_file(listp, p, new_mflags,
855 add_rule(listp, cp, pat_len, new_mflags, xflags);
857 if (new_mflags & MATCHFLG_CVS_IGNORE
858 && !(new_mflags & MATCHFLG_MERGE_FILE))
859 get_cvs_excludes(new_mflags);
864 void parse_filter_file(struct filter_list_struct *listp, const char *fname,
865 uint32 mflags, int xflags)
868 char line[MAXPATHLEN+MAX_RULE_PREFIX+1]; /* +1 for trailing slash. */
869 char *eob = line + sizeof line - 1;
870 int word_split = mflags & MATCHFLG_WORD_SPLIT;
872 if (!fname || !*fname)
875 if (*fname != '-' || fname[1] || am_server) {
876 if (server_filter_list.head) {
877 strlcpy(line, fname, sizeof line);
878 clean_fname(line, 1);
879 if (check_filter(&server_filter_list, line, 0) < 0)
882 fp = fopen(line, "rb");
884 fp = fopen(fname, "rb");
889 rprintf(FINFO, "[%s] parse_filter_file(%s,%x,%x)%s\n",
890 who_am_i(), safe_fname(fname), mflags, xflags,
891 fp ? "" : " [not found]");
895 if (xflags & XFLG_FATAL_ERRORS) {
896 rsyserr(FERROR, errno,
897 "failed to open %sclude file %s",
898 mflags & MATCHFLG_INCLUDE ? "in" : "ex",
900 exit_cleanup(RERR_FILEIO);
904 dirbuf[dirbuf_len] = '\0';
908 int ch, overflow = 0;
910 if ((ch = getc(fp)) == EOF) {
911 if (ferror(fp) && errno == EINTR)
915 if (word_split && isspace(ch))
917 if (eol_nulls? !ch : (ch == '\n' || ch == '\r'))
925 rprintf(FERROR, "discarding over-long filter: %s...\n", line);
929 /* Skip an empty token and (when line parsing) comments. */
930 if (*line && (word_split || (*line != ';' && *line != '#')))
931 parse_rule(listp, line, mflags, xflags);
938 /* If the "for_xfer" flag is set, the prefix is made compatible with the
939 * current protocol_version (if possible) or a NULL is returned (if not
941 char *get_rule_prefix(int match_flags, const char *pat, int for_xfer,
942 unsigned int *plen_ptr)
944 static char buf[MAX_RULE_PREFIX+1];
946 int legal_len = for_xfer && protocol_version < 29 ? 1 : MAX_RULE_PREFIX;
948 if (match_flags & MATCHFLG_PERDIR_MERGE) {
952 } else if (match_flags & MATCHFLG_INCLUDE)
954 else if (legal_len != 1
955 || ((*pat == '-' || *pat == '+') && pat[1] == ' '))
960 if (match_flags & MATCHFLG_CVS_IGNORE)
963 if (match_flags & MATCHFLG_NO_INHERIT)
965 if (match_flags & MATCHFLG_WORD_SPLIT)
967 if (match_flags & MATCHFLG_NO_PREFIXES) {
968 if (match_flags & MATCHFLG_INCLUDE)
974 if (match_flags & MATCHFLG_EXCLUDE_SELF)
976 if (op - buf > legal_len)
982 *plen_ptr = op - buf;
983 if (op - buf > MAX_RULE_PREFIX)
984 overflow("get_rule_prefix");
988 static void send_rules(int f_out, struct filter_list_struct *flp)
990 struct filter_struct *ent;
992 for (ent = flp->head; ent; ent = ent->next) {
993 unsigned int len, plen, dlen;
996 if (ent->match_flags & MATCHFLG_CVS_IGNORE
997 && !(ent->match_flags & MATCHFLG_MERGE_FILE)) {
998 if (am_sender || protocol_version < 29) {
999 send_rules(f_out, &cvs_filter_list);
1003 p = get_rule_prefix(ent->match_flags, ent->pattern, 1, &plen);
1006 "filter rules are too modern for remote rsync.\n");
1007 exit_cleanup(RERR_SYNTAX);
1009 len = strlen(ent->pattern);
1010 dlen = ent->match_flags & MATCHFLG_DIRECTORY ? 1 : 0;
1011 if (!(plen + len + dlen))
1013 write_int(f_out, plen + len + dlen);
1015 write_buf(f_out, p, plen);
1016 write_buf(f_out, ent->pattern, len);
1018 write_byte(f_out, '/');
1022 /* This is only called by the client. */
1023 void send_filter_list(int f_out)
1025 if (local_server || (am_sender && (!delete_mode || delete_excluded)))
1027 if (cvs_exclude && am_sender) {
1028 if (protocol_version >= 29)
1029 parse_rule(&filter_list, ":C", 0, 0);
1030 parse_rule(&filter_list, "-C", 0, 0);
1033 /* This is a complete hack - blame Rusty. FIXME!
1034 * Remove this hack when older rsyncs (below 2.6.4) are gone. */
1035 if (list_only == 1 && !recurse)
1036 parse_rule(&filter_list, "/*/*", MATCHFLG_NO_PREFIXES, 0);
1039 send_rules(f_out, &filter_list);
1040 write_int(f_out, 0);
1044 if (!am_sender || protocol_version < 29)
1045 parse_rule(&filter_list, ":C", 0, 0);
1047 parse_rule(&filter_list, "-C", 0, 0);
1051 /* This is only called by the server. */
1052 void recv_filter_list(int f_in)
1054 char line[MAXPATHLEN+MAX_RULE_PREFIX+1]; /* +1 for trailing slash. */
1055 int xflags = protocol_version >= 29 ? 0 : XFLG_OLD_PREFIXES;
1058 if (!local_server && (am_sender || (delete_mode && !delete_excluded))) {
1059 while ((len = read_int(f_in)) != 0) {
1060 if (len >= sizeof line)
1061 overflow("recv_rules");
1062 read_sbuf(f_in, line, len);
1063 parse_rule(&filter_list, line, 0, xflags);
1068 if (local_server || am_sender || protocol_version < 29)
1069 parse_rule(&filter_list, ":C", 0, 0);
1070 if (local_server || am_sender)
1071 parse_rule(&filter_list, "-C", 0, 0);