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, 2004, 2005, 2006 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 2 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, write to the Free Software Foundation, Inc.,
21 * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
33 extern int local_server;
34 extern int prune_empty_dirs;
35 extern int delete_mode;
36 extern int delete_excluded;
37 extern int cvs_exclude;
38 extern int sanitize_paths;
39 extern int protocol_version;
42 extern char curr_dir[];
43 extern unsigned int curr_dir_len;
44 extern unsigned int module_dirlen;
46 struct filter_list_struct filter_list = { 0, 0, "" };
47 struct filter_list_struct cvs_filter_list = { 0, 0, " [global CVS]" };
48 struct filter_list_struct server_filter_list = { 0, 0, " [daemon]" };
50 /* Need room enough for ":MODS " prefix plus some room to grow. */
51 #define MAX_RULE_PREFIX (16)
53 #define MODIFIERS_MERGE_FILE "-+Cenw"
54 #define MODIFIERS_INCL_EXCL "/!Crs"
55 #define MODIFIERS_HIDE_PROTECT "/!"
57 /* The dirbuf is set by push_local_filters() to the current subdirectory
58 * relative to curr_dir that is being processed. The path always has a
59 * trailing slash appended, and the variable dirbuf_len contains the length
60 * of this path prefix. The path is always absolute. */
61 static char dirbuf[MAXPATHLEN+1];
62 static unsigned int dirbuf_len = 0;
63 static int dirbuf_depth;
65 /* This is True when we're scanning parent dirs for per-dir merge-files. */
66 static BOOL parent_dirscan = False;
68 /* This array contains a list of all the currently active per-dir merge
69 * files. This makes it easier to save the appropriate values when we
70 * "push" down into each subdirectory. */
71 static struct filter_struct **mergelist_parents;
72 static int mergelist_cnt = 0;
73 static int mergelist_size = 0;
75 /* Each filter_list_struct describes a singly-linked list by keeping track
76 * of both the head and tail pointers. The list is slightly unusual in that
77 * a parent-dir's content can be appended to the end of the local list in a
78 * special way: the last item in the local list has its "next" pointer set
79 * to point to the inherited list, but the local list's tail pointer points
80 * at the end of the local list. Thus, if the local list is empty, the head
81 * will be pointing at the inherited content but the tail will be NULL. To
82 * help you visualize this, here are the possible list arrangements:
84 * Completely Empty Local Content Only
85 * ================================== ====================================
86 * head -> NULL head -> Local1 -> Local2 -> NULL
87 * tail -> NULL tail -------------^
89 * Inherited Content Only Both Local and Inherited Content
90 * ================================== ====================================
91 * head -> Parent1 -> Parent2 -> NULL head -> L1 -> L2 -> P1 -> P2 -> NULL
92 * tail -> NULL tail ---------^
94 * This means that anyone wanting to traverse the whole list to use it just
95 * needs to start at the head and use the "next" pointers until it goes
96 * NULL. To add new local content, we insert the item after the tail item
97 * and update the tail (obviously, if "tail" was NULL, we insert it at the
98 * head). To clear the local list, WE MUST NOT FREE THE INHERITED CONTENT
99 * because it is shared between the current list and our parent list(s).
100 * The easiest way to handle this is to simply truncate the list after the
101 * tail item and then free the local list from the head. When inheriting
102 * the list for a new local dir, we just save off the filter_list_struct
103 * values (so we can pop back to them later) and set the tail to NULL.
106 static void free_filter(struct filter_struct *ex)
108 if (ex->match_flags & MATCHFLG_PERDIR_MERGE) {
109 free(ex->u.mergelist->debug_type);
110 free(ex->u.mergelist);
117 /* Build a filter structure given a filter pattern. The value in "pat"
118 * is not null-terminated. */
119 static void add_rule(struct filter_list_struct *listp, const char *pat,
120 unsigned int pat_len, uint32 mflags, int xflags)
122 struct filter_struct *ret;
127 rprintf(FINFO, "[%s] add_rule(%s%.*s%s)%s\n",
128 who_am_i(), get_rule_prefix(mflags, pat, 0, NULL),
130 (mflags & MATCHFLG_DIRECTORY) ? "/" : "",
134 /* These flags also indicate that we're reading a list that
135 * needs to be filtered now, not post-filtered later. */
136 if (xflags & (XFLG_ANCHORED2ABS|XFLG_ABS_IF_SLASH)) {
137 uint32 mf = mflags & (MATCHFLG_RECEIVER_SIDE|MATCHFLG_SENDER_SIDE);
139 if (mf == MATCHFLG_RECEIVER_SIDE)
142 if (mf == MATCHFLG_SENDER_SIDE)
147 if (!(ret = new(struct filter_struct)))
148 out_of_memory("add_rule");
149 memset(ret, 0, sizeof ret[0]);
151 if (!(mflags & (MATCHFLG_ABS_PATH | MATCHFLG_MERGE_FILE))
152 && ((xflags & (XFLG_ANCHORED2ABS|XFLG_ABS_IF_SLASH) && *pat == '/')
153 || (xflags & XFLG_ABS_IF_SLASH && strchr(pat, '/') != NULL))) {
154 mflags |= MATCHFLG_ABS_PATH;
156 ex_len = dirbuf_len - module_dirlen - 1;
161 if (!(ret->pattern = new_array(char, ex_len + pat_len + 1)))
162 out_of_memory("add_rule");
164 memcpy(ret->pattern, dirbuf + module_dirlen, ex_len);
165 strlcpy(ret->pattern + ex_len, pat, pat_len + 1);
168 if (strpbrk(ret->pattern, "*[?")) {
169 mflags |= MATCHFLG_WILD;
170 if ((cp = strstr(ret->pattern, "**")) != NULL) {
171 mflags |= MATCHFLG_WILD2;
172 /* If the pattern starts with **, note that. */
173 if (cp == ret->pattern)
174 mflags |= MATCHFLG_WILD2_PREFIX;
175 /* If the pattern ends with ***, note that. */
177 && ret->pattern[pat_len-3] == '*'
178 && ret->pattern[pat_len-2] == '*'
179 && ret->pattern[pat_len-1] == '*')
180 mflags |= MATCHFLG_WILD3_SUFFIX;
184 if (pat_len > 1 && ret->pattern[pat_len-1] == '/') {
185 ret->pattern[pat_len-1] = 0;
186 mflags |= MATCHFLG_DIRECTORY;
189 if (mflags & MATCHFLG_PERDIR_MERGE) {
190 struct filter_list_struct *lp;
194 if ((cp = strrchr(ret->pattern, '/')) != NULL)
199 /* If the local merge file was already mentioned, don't
201 for (i = 0; i < mergelist_cnt; i++) {
202 struct filter_struct *ex = mergelist_parents[i];
203 const char *s = strrchr(ex->pattern, '/');
209 if (len == pat_len - (cp - ret->pattern)
210 && memcmp(s, cp, len) == 0) {
216 if (!(lp = new_array(struct filter_list_struct, 1)))
217 out_of_memory("add_rule");
218 lp->head = lp->tail = NULL;
219 if (asprintf(&lp->debug_type, " [per-dir %s]", cp) < 0)
220 out_of_memory("add_rule");
221 ret->u.mergelist = lp;
223 if (mergelist_cnt == mergelist_size) {
225 mergelist_parents = realloc_array(mergelist_parents,
226 struct filter_struct *,
228 if (!mergelist_parents)
229 out_of_memory("add_rule");
231 mergelist_parents[mergelist_cnt++] = ret;
233 for (cp = ret->pattern; (cp = strchr(cp, '/')) != NULL; cp++)
237 ret->match_flags = mflags;
240 ret->next = listp->head;
241 listp->head = listp->tail = ret;
243 ret->next = listp->tail->next;
244 listp->tail->next = ret;
249 static void clear_filter_list(struct filter_list_struct *listp)
252 struct filter_struct *ent, *next;
253 /* Truncate any inherited items from the local list. */
254 listp->tail->next = NULL;
255 /* Now free everything that is left. */
256 for (ent = listp->head; ent; ent = next) {
262 listp->head = listp->tail = NULL;
265 /* This returns an expanded (absolute) filename for the merge-file name if
266 * the name has any slashes in it OR if the parent_dirscan var is True;
267 * otherwise it returns the original merge_file name. If the len_ptr value
268 * is non-NULL the merge_file name is limited by the referenced length
269 * value and will be updated with the length of the resulting name. We
270 * always return a name that is null terminated, even if the merge_file
272 static char *parse_merge_name(const char *merge_file, unsigned int *len_ptr,
273 unsigned int prefix_skip)
275 static char buf[MAXPATHLEN];
276 char *fn, tmpbuf[MAXPATHLEN];
279 if (!parent_dirscan && *merge_file != '/') {
280 /* Return the name unchanged it doesn't have any slashes. */
282 const char *p = merge_file + *len_ptr;
283 while (--p > merge_file && *p != '/') {}
284 if (p == merge_file) {
285 strlcpy(buf, merge_file, *len_ptr + 1);
288 } else if (strchr(merge_file, '/') == NULL)
289 return (char *)merge_file;
292 fn = *merge_file == '/' ? buf : tmpbuf;
293 if (sanitize_paths) {
294 const char *r = prefix_skip ? "/" : NULL;
295 /* null-terminate the name if it isn't already */
296 if (len_ptr && merge_file[*len_ptr]) {
297 char *to = fn == buf ? tmpbuf : buf;
298 strlcpy(to, merge_file, *len_ptr + 1);
301 if (!sanitize_path(fn, merge_file, r, dirbuf_depth, NULL)) {
302 rprintf(FERROR, "merge-file name overflows: %s\n",
307 strlcpy(fn, merge_file, len_ptr ? *len_ptr + 1 : MAXPATHLEN);
315 if (dirbuf_len + fn_len >= MAXPATHLEN) {
316 rprintf(FERROR, "merge-file name overflows: %s\n", fn);
319 memcpy(buf, dirbuf + prefix_skip, dirbuf_len - prefix_skip);
320 memcpy(buf + dirbuf_len - prefix_skip, fn, fn_len + 1);
321 fn_len = clean_fname(buf, 1);
329 /* Sets the dirbuf and dirbuf_len values. */
330 void set_filter_dir(const char *dir, unsigned int dirlen)
334 memcpy(dirbuf, curr_dir, curr_dir_len);
335 dirbuf[curr_dir_len] = '/';
336 len = curr_dir_len + 1;
337 if (len + dirlen >= MAXPATHLEN)
341 memcpy(dirbuf + len, dir, dirlen);
342 dirbuf[dirlen + len] = '\0';
343 dirbuf_len = clean_fname(dirbuf, 1);
344 if (dirbuf_len > 1 && dirbuf[dirbuf_len-1] == '.'
345 && dirbuf[dirbuf_len-2] == '/')
348 dirbuf[dirbuf_len++] = '/';
349 dirbuf[dirbuf_len] = '\0';
351 dirbuf_depth = count_dir_elements(dirbuf + module_dirlen);
354 /* This routine takes a per-dir merge-file entry and finishes its setup.
355 * If the name has a path portion then we check to see if it refers to a
356 * parent directory of the first transfer dir. If it does, we scan all the
357 * dirs from that point through the parent dir of the transfer dir looking
358 * for the per-dir merge-file in each one. */
359 static BOOL setup_merge_file(struct filter_struct *ex,
360 struct filter_list_struct *lp)
362 char buf[MAXPATHLEN];
363 char *x, *y, *pat = ex->pattern;
366 if (!(x = parse_merge_name(pat, NULL, 0)) || *x != '/')
371 ex->pattern = strdup(y+1);
375 strlcpy(buf, x, MAXPATHLEN);
377 pathjoin(buf, MAXPATHLEN, dirbuf, x);
379 len = clean_fname(buf, 1);
380 if (len != 1 && len < MAXPATHLEN-1) {
384 /* This ensures that the specified dir is a parent of the transfer. */
385 for (x = buf, y = dirbuf; *x && *x == *y; x++, y++) {}
387 y += strlen(y); /* nope -- skip the scan */
389 parent_dirscan = True;
391 char save[MAXPATHLEN];
392 strlcpy(save, y, MAXPATHLEN);
394 dirbuf_len = y - dirbuf;
395 strlcpy(x, ex->pattern, MAXPATHLEN - (x - buf));
396 parse_filter_file(lp, buf, ex->match_flags, XFLG_ANCHORED2ABS);
397 if (ex->match_flags & MATCHFLG_NO_INHERIT)
400 strlcpy(y, save, MAXPATHLEN);
401 while ((*x++ = *y++) != '/') {}
403 parent_dirscan = False;
408 /* Each time rsync changes to a new directory it call this function to
409 * handle all the per-dir merge-files. The "dir" value is the current path
410 * relative to curr_dir (which might not be null-terminated). We copy it
411 * into dirbuf so that we can easily append a file name on the end. */
412 void *push_local_filters(const char *dir, unsigned int dirlen)
414 struct filter_list_struct *ap, *push;
417 set_filter_dir(dir, dirlen);
422 push = new_array(struct filter_list_struct, mergelist_cnt);
424 out_of_memory("push_local_filters");
426 for (i = 0, ap = push; i < mergelist_cnt; i++) {
427 memcpy(ap++, mergelist_parents[i]->u.mergelist,
428 sizeof (struct filter_list_struct));
431 /* Note: parse_filter_file() might increase mergelist_cnt, so keep
432 * this loop separate from the above loop. */
433 for (i = 0; i < mergelist_cnt; i++) {
434 struct filter_struct *ex = mergelist_parents[i];
435 struct filter_list_struct *lp = ex->u.mergelist;
438 rprintf(FINFO, "[%s] pushing filter list%s\n",
439 who_am_i(), lp->debug_type);
442 lp->tail = NULL; /* Switch any local rules to inherited. */
443 if (ex->match_flags & MATCHFLG_NO_INHERIT)
446 if (ex->match_flags & MATCHFLG_FINISH_SETUP) {
447 ex->match_flags &= ~MATCHFLG_FINISH_SETUP;
448 if (setup_merge_file(ex, lp))
449 set_filter_dir(dir, dirlen);
452 if (strlcpy(dirbuf + dirbuf_len, ex->pattern,
453 MAXPATHLEN - dirbuf_len) < MAXPATHLEN - dirbuf_len) {
454 parse_filter_file(lp, dirbuf, ex->match_flags,
457 io_error |= IOERR_GENERAL;
459 "cannot add local filter rules in long-named directory: %s\n",
462 dirbuf[dirbuf_len] = '\0';
468 void pop_local_filters(void *mem)
470 struct filter_list_struct *ap, *pop = (struct filter_list_struct*)mem;
473 for (i = mergelist_cnt; i-- > 0; ) {
474 struct filter_struct *ex = mergelist_parents[i];
475 struct filter_list_struct *lp = ex->u.mergelist;
478 rprintf(FINFO, "[%s] popping filter list%s\n",
479 who_am_i(), lp->debug_type);
482 clear_filter_list(lp);
488 for (i = 0, ap = pop; i < mergelist_cnt; i++) {
489 memcpy(mergelist_parents[i]->u.mergelist, ap++,
490 sizeof (struct filter_list_struct));
496 static int rule_matches(char *name, struct filter_struct *ex, int name_is_dir)
498 int slash_handling, str_cnt = 0, anchored_match = 0;
499 int ret_match = ex->match_flags & MATCHFLG_NEGATE ? 0 : 1;
500 char *p, *pattern = ex->pattern;
501 const char *strings[16]; /* more than enough */
506 if (!ex->u.slash_cnt && !(ex->match_flags & MATCHFLG_WILD2)) {
507 /* If the pattern does not have any slashes AND it does
508 * not have a "**" (which could match a slash), then we
509 * just match the name portion of the path. */
510 if ((p = strrchr(name,'/')) != NULL)
512 } else if (ex->match_flags & MATCHFLG_ABS_PATH && *name != '/'
513 && curr_dir_len > module_dirlen + 1) {
514 /* If we're matching against an absolute-path pattern,
515 * we need to prepend our full path info. */
516 strings[str_cnt++] = curr_dir + module_dirlen + 1;
517 strings[str_cnt++] = "/";
518 } else if (ex->match_flags & MATCHFLG_WILD2_PREFIX && *name != '/') {
519 /* Allow "**"+"/" to match at the start of the string. */
520 strings[str_cnt++] = "/";
522 strings[str_cnt++] = name;
524 /* Allow a trailing "/"+"***" to match the directory. */
525 if (ex->match_flags & MATCHFLG_WILD3_SUFFIX)
526 strings[str_cnt++] = "/";
527 } else if (ex->match_flags & MATCHFLG_DIRECTORY)
529 strings[str_cnt] = NULL;
531 if (*pattern == '/') {
534 if (strings[0][0] == '/')
538 if (!anchored_match && ex->u.slash_cnt
539 && !(ex->match_flags & MATCHFLG_WILD2)) {
540 /* A non-anchored match with an infix slash and no "**"
541 * needs to match the last slash_cnt+1 name elements. */
542 slash_handling = ex->u.slash_cnt + 1;
543 } else if (!anchored_match && !(ex->match_flags & MATCHFLG_WILD2_PREFIX)
544 && ex->match_flags & MATCHFLG_WILD2) {
545 /* A non-anchored match with an infix or trailing "**" (but not
546 * a prefixed "**") needs to try matching after every slash. */
549 /* The pattern matches only at the start of the path or name. */
553 if (ex->match_flags & MATCHFLG_WILD) {
554 if (wildmatch_array(pattern, strings, slash_handling))
556 } else if (str_cnt > 1) {
557 if (litmatch_array(pattern, strings, slash_handling))
559 } else if (anchored_match) {
560 if (strcmp(strings[0], pattern) == 0)
563 int l1 = strlen(name);
564 int l2 = strlen(pattern);
566 strcmp(name+(l1-l2),pattern) == 0 &&
567 (l1==l2 || name[l1-(l2+1)] == '/')) {
576 static void report_filter_result(char const *name,
577 struct filter_struct const *ent,
578 int name_is_dir, const char *type)
580 /* If a trailing slash is present to match only directories,
581 * then it is stripped out by add_rule(). So as a special
582 * case we add it back in here. */
585 static char *actions[2][2]
586 = { {"show", "hid"}, {"risk", "protect"} };
587 const char *w = who_am_i();
588 rprintf(FINFO, "[%s] %sing %s %s because of pattern %s%s%s\n",
589 w, actions[*w!='s'][!(ent->match_flags&MATCHFLG_INCLUDE)],
590 name_is_dir ? "directory" : "file", name, ent->pattern,
591 ent->match_flags & MATCHFLG_DIRECTORY ? "/" : "", type);
597 * Return -1 if file "name" is defined to be excluded by the specified
598 * exclude list, 1 if it is included, and 0 if it was not matched.
600 int check_filter(struct filter_list_struct *listp, char *name, int name_is_dir)
602 struct filter_struct *ent;
604 for (ent = listp->head; ent; ent = ent->next) {
605 if (ent->match_flags & MATCHFLG_PERDIR_MERGE) {
606 int rc = check_filter(ent->u.mergelist, name,
612 if (ent->match_flags & MATCHFLG_CVS_IGNORE) {
613 int rc = check_filter(&cvs_filter_list, name,
619 if (rule_matches(name, ent, name_is_dir)) {
620 report_filter_result(name, ent, name_is_dir,
622 return ent->match_flags & MATCHFLG_INCLUDE ? 1 : -1;
629 #define RULE_STRCMP(s,r) rule_strcmp((s), (r), sizeof (r) - 1)
631 static const uchar *rule_strcmp(const uchar *str, const char *rule, int rule_len)
633 if (strncmp((char*)str, rule, rule_len) != 0)
635 if (isspace(str[rule_len]) || str[rule_len] == '_' || !str[rule_len])
636 return str + rule_len - 1;
637 if (str[rule_len] == ',')
638 return str + rule_len;
642 /* Get the next include/exclude arg from the string. The token will not
643 * be '\0' terminated, so use the returned length to limit the string.
644 * Also, be sure to add this length to the returned pointer before passing
645 * it back to ask for the next token. This routine parses the "!" (list-
646 * clearing) token and (depending on the mflags) the various prefixes.
647 * The *mflags_ptr value will be set on exit to the new MATCHFLG_* bits
648 * for the current token. */
649 static const char *parse_rule_tok(const char *p, uint32 mflags, int xflags,
650 unsigned int *len_ptr, uint32 *mflags_ptr)
652 const uchar *s = (const uchar *)p;
656 if (mflags & MATCHFLG_WORD_SPLIT) {
657 /* Skip over any initial whitespace. */
660 /* Update to point to real start of rule. */
666 new_mflags = mflags & MATCHFLGS_FROM_CONTAINER;
668 /* Figure out what kind of a filter rule "s" is pointing at. Note
669 * that if MATCHFLG_NO_PREFIXES is set, the rule is either an include
670 * or an exclude based on the inheritance of the MATCHFLG_INCLUDE
671 * flag (above). XFLG_OLD_PREFIXES indicates a compatibility mode
672 * for old include/exclude patterns where just "+ " and "- " are
673 * allowed as optional prefixes. */
674 if (mflags & MATCHFLG_NO_PREFIXES) {
675 if (*s == '!' && mflags & MATCHFLG_CVS_IGNORE)
676 new_mflags |= MATCHFLG_CLEAR_LIST; /* Tentative! */
677 } else if (xflags & XFLG_OLD_PREFIXES) {
678 if (*s == '-' && s[1] == ' ') {
679 new_mflags &= ~MATCHFLG_INCLUDE;
681 } else if (*s == '+' && s[1] == ' ') {
682 new_mflags |= MATCHFLG_INCLUDE;
684 } else if (*s == '!')
685 new_mflags |= MATCHFLG_CLEAR_LIST; /* Tentative! */
687 char ch = 0, *mods = "";
690 if ((s = RULE_STRCMP(s, "clear")) != NULL)
694 if ((s = RULE_STRCMP(s, "dir-merge")) != NULL)
698 if ((s = RULE_STRCMP(s, "exclude")) != NULL)
702 if ((s = RULE_STRCMP(s, "hide")) != NULL)
706 if ((s = RULE_STRCMP(s, "include")) != NULL)
710 if ((s = RULE_STRCMP(s, "merge")) != NULL)
714 if ((s = RULE_STRCMP(s, "protect")) != NULL)
718 if ((s = RULE_STRCMP(s, "risk")) != NULL)
722 if ((s = RULE_STRCMP(s, "show")) != NULL)
733 new_mflags |= MATCHFLG_PERDIR_MERGE
734 | MATCHFLG_FINISH_SETUP;
737 new_mflags |= MATCHFLG_MERGE_FILE;
738 mods = MODIFIERS_INCL_EXCL MODIFIERS_MERGE_FILE;
741 new_mflags |= MATCHFLG_INCLUDE;
744 mods = MODIFIERS_INCL_EXCL;
747 new_mflags |= MATCHFLG_INCLUDE;
750 new_mflags |= MATCHFLG_SENDER_SIDE;
751 mods = MODIFIERS_HIDE_PROTECT;
754 new_mflags |= MATCHFLG_INCLUDE;
757 new_mflags |= MATCHFLG_RECEIVER_SIDE;
758 mods = MODIFIERS_HIDE_PROTECT;
761 new_mflags |= MATCHFLG_CLEAR_LIST;
765 rprintf(FERROR, "Unknown filter rule: `%s'\n", p);
766 exit_cleanup(RERR_SYNTAX);
768 while (mods && *++s && *s != ' ' && *s != '_') {
769 if (strchr(mods, *s) == NULL) {
770 if (mflags & MATCHFLG_WORD_SPLIT && isspace(*s)) {
776 "invalid modifier sequence at '%c' in filter rule: %s\n",
778 exit_cleanup(RERR_SYNTAX);
782 if (new_mflags & MATCHFLG_NO_PREFIXES)
784 new_mflags |= MATCHFLG_NO_PREFIXES;
787 if (new_mflags & MATCHFLG_NO_PREFIXES)
789 new_mflags |= MATCHFLG_NO_PREFIXES
793 new_mflags |= MATCHFLG_ABS_PATH;
796 new_mflags |= MATCHFLG_NEGATE;
799 if (new_mflags & MATCHFLG_NO_PREFIXES)
801 new_mflags |= MATCHFLG_NO_PREFIXES
802 | MATCHFLG_WORD_SPLIT
803 | MATCHFLG_NO_INHERIT
804 | MATCHFLG_CVS_IGNORE;
807 new_mflags |= MATCHFLG_EXCLUDE_SELF;
810 new_mflags |= MATCHFLG_NO_INHERIT;
813 new_mflags |= MATCHFLG_RECEIVER_SIDE;
816 new_mflags |= MATCHFLG_SENDER_SIDE;
819 new_mflags |= MATCHFLG_WORD_SPLIT;
827 if (mflags & MATCHFLG_WORD_SPLIT) {
829 /* Token ends at whitespace or the end of the string. */
830 while (!isspace(*cp) && *cp != '\0')
834 len = strlen((char*)s);
836 if (new_mflags & MATCHFLG_CLEAR_LIST) {
837 if (!(mflags & MATCHFLG_NO_PREFIXES)
838 && !(xflags & XFLG_OLD_PREFIXES) && len) {
840 "'!' rule has trailing characters: %s\n", p);
841 exit_cleanup(RERR_SYNTAX);
844 new_mflags &= ~MATCHFLG_CLEAR_LIST;
845 } else if (!len && !(new_mflags & MATCHFLG_CVS_IGNORE)) {
846 rprintf(FERROR, "unexpected end of filter rule: %s\n", p);
847 exit_cleanup(RERR_SYNTAX);
851 *mflags_ptr = new_mflags;
852 return (const char *)s;
856 static char default_cvsignore[] =
857 /* These default ignored items come from the CVS manual. */
858 "RCS SCCS CVS CVS.adm RCSLOG cvslog.* tags TAGS"
859 " .make.state .nse_depinfo *~ #* .#* ,* _$* *$"
860 " *.old *.bak *.BAK *.orig *.rej .del-*"
861 " *.a *.olb *.o *.obj *.so *.exe"
862 " *.Z *.elc *.ln core"
863 /* The rest we added to suit ourself. */
866 static void get_cvs_excludes(uint32 mflags)
868 char *p, fname[MAXPATHLEN];
869 static int initialized = 0;
875 parse_rule(&cvs_filter_list, default_cvsignore, mflags, 0);
877 p = module_id >= 0 && lp_use_chroot(module_id) ? "/" : getenv("HOME");
878 if (p && pathjoin(fname, MAXPATHLEN, p, ".cvsignore") < MAXPATHLEN)
879 parse_filter_file(&cvs_filter_list, fname, mflags, 0);
881 parse_rule(&cvs_filter_list, getenv("CVSIGNORE"), mflags, 0);
885 void parse_rule(struct filter_list_struct *listp, const char *pattern,
886 uint32 mflags, int xflags)
888 unsigned int pat_len;
896 /* Remember that the returned string is NOT '\0' terminated! */
897 cp = parse_rule_tok(pattern, mflags, xflags,
898 &pat_len, &new_mflags);
901 if (pat_len >= MAXPATHLEN) {
902 rprintf(FERROR, "discarding over-long filter: %s\n",
906 pattern = cp + pat_len;
908 if (new_mflags & MATCHFLG_CLEAR_LIST) {
911 "[%s] clearing filter list%s\n",
912 who_am_i(), listp->debug_type);
914 clear_filter_list(listp);
918 if (new_mflags & MATCHFLG_MERGE_FILE) {
925 if (new_mflags & MATCHFLG_EXCLUDE_SELF) {
926 const char *name = strrchr(cp, '/');
931 add_rule(listp, name, len, 0, 0);
932 new_mflags &= ~MATCHFLG_EXCLUDE_SELF;
935 if (new_mflags & MATCHFLG_PERDIR_MERGE) {
936 if (parent_dirscan) {
937 if (!(p = parse_merge_name(cp, &len,
940 add_rule(listp, p, len, new_mflags, 0);
944 if (!(p = parse_merge_name(cp, &len, 0)))
946 parse_filter_file(listp, p, new_mflags,
952 add_rule(listp, cp, pat_len, new_mflags, xflags);
954 if (new_mflags & MATCHFLG_CVS_IGNORE
955 && !(new_mflags & MATCHFLG_MERGE_FILE))
956 get_cvs_excludes(new_mflags);
961 void parse_filter_file(struct filter_list_struct *listp, const char *fname,
962 uint32 mflags, int xflags)
965 char line[BIGPATHBUFLEN];
966 char *eob = line + sizeof line - 1;
967 int word_split = mflags & MATCHFLG_WORD_SPLIT;
969 if (!fname || !*fname)
972 if (*fname != '-' || fname[1] || am_server) {
973 if (server_filter_list.head) {
974 strlcpy(line, fname, sizeof line);
975 clean_fname(line, 1);
976 if (check_filter(&server_filter_list, line, 0) < 0)
979 fp = fopen(line, "rb");
981 fp = fopen(fname, "rb");
986 rprintf(FINFO, "[%s] parse_filter_file(%s,%x,%x)%s\n",
987 who_am_i(), fname, mflags, xflags,
988 fp ? "" : " [not found]");
992 if (xflags & XFLG_FATAL_ERRORS) {
993 rsyserr(FERROR, errno,
994 "failed to open %sclude file %s",
995 mflags & MATCHFLG_INCLUDE ? "in" : "ex",
997 exit_cleanup(RERR_FILEIO);
1001 dirbuf[dirbuf_len] = '\0';
1005 int ch, overflow = 0;
1007 if ((ch = getc(fp)) == EOF) {
1008 if (ferror(fp) && errno == EINTR) {
1014 if (word_split && isspace(ch))
1016 if (eol_nulls? !ch : (ch == '\n' || ch == '\r'))
1024 rprintf(FERROR, "discarding over-long filter: %s...\n", line);
1028 /* Skip an empty token and (when line parsing) comments. */
1029 if (*line && (word_split || (*line != ';' && *line != '#')))
1030 parse_rule(listp, line, mflags, xflags);
1037 /* If the "for_xfer" flag is set, the prefix is made compatible with the
1038 * current protocol_version (if possible) or a NULL is returned (if not
1040 char *get_rule_prefix(int match_flags, const char *pat, int for_xfer,
1041 unsigned int *plen_ptr)
1043 static char buf[MAX_RULE_PREFIX+1];
1045 int legal_len = for_xfer && protocol_version < 29 ? 1 : MAX_RULE_PREFIX-1;
1047 if (match_flags & MATCHFLG_PERDIR_MERGE) {
1051 } else if (match_flags & MATCHFLG_INCLUDE)
1053 else if (legal_len != 1
1054 || ((*pat == '-' || *pat == '+') && pat[1] == ' '))
1059 if (match_flags & MATCHFLG_CVS_IGNORE)
1062 if (match_flags & MATCHFLG_NO_INHERIT)
1064 if (match_flags & MATCHFLG_WORD_SPLIT)
1066 if (match_flags & MATCHFLG_NO_PREFIXES) {
1067 if (match_flags & MATCHFLG_INCLUDE)
1073 if (match_flags & MATCHFLG_EXCLUDE_SELF)
1075 if (match_flags & MATCHFLG_SENDER_SIDE
1076 && (!for_xfer || protocol_version >= 29))
1078 if (match_flags & MATCHFLG_RECEIVER_SIDE
1079 && (!for_xfer || protocol_version >= 29
1080 || (delete_excluded && am_sender)))
1082 if (op - buf > legal_len)
1088 *plen_ptr = op - buf;
1092 static void send_rules(int f_out, struct filter_list_struct *flp)
1094 struct filter_struct *ent, *prev = NULL;
1096 for (ent = flp->head; ent; ent = ent->next) {
1097 unsigned int len, plen, dlen;
1101 if (ent->match_flags & MATCHFLG_SENDER_SIDE)
1102 elide = am_sender ? 1 : -1;
1103 if (ent->match_flags & MATCHFLG_RECEIVER_SIDE)
1104 elide = elide ? 0 : am_sender ? -1 : 1;
1105 else if (delete_excluded && !elide)
1106 elide = am_sender ? 1 : -1;
1109 prev->next = ent->next;
1111 flp->head = ent->next;
1116 if (ent->match_flags & MATCHFLG_CVS_IGNORE
1117 && !(ent->match_flags & MATCHFLG_MERGE_FILE)) {
1118 int f = am_sender || protocol_version < 29 ? f_out : -2;
1119 send_rules(f, &cvs_filter_list);
1123 p = get_rule_prefix(ent->match_flags, ent->pattern, 1, &plen);
1126 "filter rules are too modern for remote rsync.\n");
1127 exit_cleanup(RERR_SYNTAX);
1131 len = strlen(ent->pattern);
1132 dlen = ent->match_flags & MATCHFLG_DIRECTORY ? 1 : 0;
1133 if (!(plen + len + dlen))
1135 write_int(f_out, plen + len + dlen);
1137 write_buf(f_out, p, plen);
1138 write_buf(f_out, ent->pattern, len);
1140 write_byte(f_out, '/');
1145 /* This is only called by the client. */
1146 void send_filter_list(int f_out)
1148 int receiver_wants_list = prune_empty_dirs
1149 || (delete_mode && (!delete_excluded || protocol_version >= 29));
1151 if (local_server || (am_sender && !receiver_wants_list))
1153 if (cvs_exclude && am_sender) {
1154 if (protocol_version >= 29)
1155 parse_rule(&filter_list, ":C", 0, 0);
1156 parse_rule(&filter_list, "-C", 0, 0);
1159 /* This is a complete hack - blame Rusty. FIXME!
1160 * Remove this hack when older rsyncs (below 2.6.4) are gone. */
1161 if (list_only == 1 && !recurse)
1162 parse_rule(&filter_list, "/*/*", MATCHFLG_NO_PREFIXES, 0);
1164 send_rules(f_out, &filter_list);
1167 write_int(f_out, 0);
1170 if (!am_sender || protocol_version < 29)
1171 parse_rule(&filter_list, ":C", 0, 0);
1173 parse_rule(&filter_list, "-C", 0, 0);
1177 /* This is only called by the server. */
1178 void recv_filter_list(int f_in)
1180 char line[BIGPATHBUFLEN];
1181 int xflags = protocol_version >= 29 ? 0 : XFLG_OLD_PREFIXES;
1182 int receiver_wants_list = prune_empty_dirs
1184 && (!delete_excluded || protocol_version >= 29));
1187 if (!local_server && (am_sender || receiver_wants_list)) {
1188 while ((len = read_int(f_in)) != 0) {
1189 if (len >= sizeof line)
1190 overflow_exit("recv_rules");
1191 read_sbuf(f_in, line, len);
1192 parse_rule(&filter_list, line, 0, xflags);
1197 if (local_server || am_sender || protocol_version < 29)
1198 parse_rule(&filter_list, ":C", 0, 0);
1199 if (local_server || am_sender)
1200 parse_rule(&filter_list, "-C", 0, 0);
1203 if (local_server) /* filter out any rules that aren't for us. */
1204 send_rules(-1, &filter_list);