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) 2003-2008 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.
30 extern int local_server;
31 extern int prune_empty_dirs;
32 extern int ignore_perishable;
33 extern int delete_mode;
34 extern int delete_excluded;
35 extern int cvs_exclude;
36 extern int sanitize_paths;
37 extern int protocol_version;
40 extern char curr_dir[];
41 extern unsigned int curr_dir_len;
42 extern unsigned int module_dirlen;
44 struct filter_list_struct filter_list = { 0, 0, "" };
45 struct filter_list_struct cvs_filter_list = { 0, 0, " [global CVS]" };
46 struct filter_list_struct daemon_filter_list = { 0, 0, " [daemon]" };
48 /* Need room enough for ":MODS " prefix plus some room to grow. */
49 #define MAX_RULE_PREFIX (16)
51 #define MODIFIERS_MERGE_FILE "-+Cenw"
52 #define MODIFIERS_INCL_EXCL "/!Crsp"
53 #define MODIFIERS_HIDE_PROTECT "/!p"
55 #define SLASH_WILD3_SUFFIX "/***"
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;
124 unsigned int pre_len, suf_len, slash_cnt = 0;
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 = new0(struct filter_struct)))
148 out_of_memory("add_rule");
150 if (pat_len > 1 && pat[pat_len-1] == '/') {
152 mflags |= MATCHFLG_DIRECTORY;
155 for (cp = pat; cp < pat + pat_len; cp++) {
160 if (!(mflags & (MATCHFLG_ABS_PATH | MATCHFLG_MERGE_FILE))
161 && ((xflags & (XFLG_ANCHORED2ABS|XFLG_ABS_IF_SLASH) && *pat == '/')
162 || (xflags & XFLG_ABS_IF_SLASH && slash_cnt))) {
163 mflags |= MATCHFLG_ABS_PATH;
165 pre_len = dirbuf_len - module_dirlen - 1;
171 /* The daemon wants dir-exclude rules to get an appended "/" + "***". */
172 if (xflags & XFLG_DIR2WILD3
173 && BITS_SETnUNSET(mflags, MATCHFLG_DIRECTORY, MATCHFLG_INCLUDE)) {
174 mflags &= ~MATCHFLG_DIRECTORY;
175 suf_len = sizeof SLASH_WILD3_SUFFIX - 1;
179 if (!(ret->pattern = new_array(char, pre_len + pat_len + suf_len + 1)))
180 out_of_memory("add_rule");
182 memcpy(ret->pattern, dirbuf + module_dirlen, pre_len);
183 for (cp = ret->pattern; cp < ret->pattern + pre_len; cp++) {
188 strlcpy(ret->pattern + pre_len, pat, pat_len + 1);
191 memcpy(ret->pattern + pat_len, SLASH_WILD3_SUFFIX, suf_len+1);
196 if (strpbrk(ret->pattern, "*[?")) {
197 mflags |= MATCHFLG_WILD;
198 if ((cp = strstr(ret->pattern, "**")) != NULL) {
199 mflags |= MATCHFLG_WILD2;
200 /* If the pattern starts with **, note that. */
201 if (cp == ret->pattern)
202 mflags |= MATCHFLG_WILD2_PREFIX;
203 /* If the pattern ends with ***, note that. */
205 && ret->pattern[pat_len-3] == '*'
206 && ret->pattern[pat_len-2] == '*'
207 && ret->pattern[pat_len-1] == '*')
208 mflags |= MATCHFLG_WILD3_SUFFIX;
212 if (mflags & MATCHFLG_PERDIR_MERGE) {
213 struct filter_list_struct *lp;
217 if ((cp = strrchr(ret->pattern, '/')) != NULL)
222 /* If the local merge file was already mentioned, don't
224 for (i = 0; i < mergelist_cnt; i++) {
225 struct filter_struct *ex = mergelist_parents[i];
226 const char *s = strrchr(ex->pattern, '/');
232 if (len == pat_len - (cp - ret->pattern)
233 && memcmp(s, cp, len) == 0) {
239 if (!(lp = new_array(struct filter_list_struct, 1)))
240 out_of_memory("add_rule");
241 lp->head = lp->tail = NULL;
242 if (asprintf(&lp->debug_type, " [per-dir %s]", cp) < 0)
243 out_of_memory("add_rule");
244 ret->u.mergelist = lp;
246 if (mergelist_cnt == mergelist_size) {
248 mergelist_parents = realloc_array(mergelist_parents,
249 struct filter_struct *,
251 if (!mergelist_parents)
252 out_of_memory("add_rule");
254 mergelist_parents[mergelist_cnt++] = ret;
256 ret->u.slash_cnt = slash_cnt;
258 ret->match_flags = mflags;
261 ret->next = listp->head;
262 listp->head = listp->tail = ret;
264 ret->next = listp->tail->next;
265 listp->tail->next = ret;
270 static void clear_filter_list(struct filter_list_struct *listp)
273 struct filter_struct *ent, *next;
274 /* Truncate any inherited items from the local list. */
275 listp->tail->next = NULL;
276 /* Now free everything that is left. */
277 for (ent = listp->head; ent; ent = next) {
283 listp->head = listp->tail = NULL;
286 /* This returns an expanded (absolute) filename for the merge-file name if
287 * the name has any slashes in it OR if the parent_dirscan var is True;
288 * otherwise it returns the original merge_file name. If the len_ptr value
289 * is non-NULL the merge_file name is limited by the referenced length
290 * value and will be updated with the length of the resulting name. We
291 * always return a name that is null terminated, even if the merge_file
293 static char *parse_merge_name(const char *merge_file, unsigned int *len_ptr,
294 unsigned int prefix_skip)
296 static char buf[MAXPATHLEN];
297 char *fn, tmpbuf[MAXPATHLEN];
300 if (!parent_dirscan && *merge_file != '/') {
301 /* Return the name unchanged it doesn't have any slashes. */
303 const char *p = merge_file + *len_ptr;
304 while (--p > merge_file && *p != '/') {}
305 if (p == merge_file) {
306 strlcpy(buf, merge_file, *len_ptr + 1);
309 } else if (strchr(merge_file, '/') == NULL)
310 return (char *)merge_file;
313 fn = *merge_file == '/' ? buf : tmpbuf;
314 if (sanitize_paths) {
315 const char *r = prefix_skip ? "/" : NULL;
316 /* null-terminate the name if it isn't already */
317 if (len_ptr && merge_file[*len_ptr]) {
318 char *to = fn == buf ? tmpbuf : buf;
319 strlcpy(to, merge_file, *len_ptr + 1);
322 if (!sanitize_path(fn, merge_file, r, dirbuf_depth, SP_DEFAULT)) {
323 rprintf(FERROR, "merge-file name overflows: %s\n",
329 strlcpy(fn, merge_file, len_ptr ? *len_ptr + 1 : MAXPATHLEN);
330 fn_len = clean_fname(fn, CFN_COLLAPSE_DOT_DOT_DIRS);
333 /* If the name isn't in buf yet, it's wasn't absolute. */
335 int d_len = dirbuf_len - prefix_skip;
336 if (d_len + fn_len >= MAXPATHLEN) {
337 rprintf(FERROR, "merge-file name overflows: %s\n", fn);
340 memcpy(buf, dirbuf + prefix_skip, d_len);
341 memcpy(buf + d_len, fn, fn_len + 1);
342 fn_len = clean_fname(buf, CFN_COLLAPSE_DOT_DOT_DIRS);
350 /* Sets the dirbuf and dirbuf_len values. */
351 void set_filter_dir(const char *dir, unsigned int dirlen)
355 memcpy(dirbuf, curr_dir, curr_dir_len);
356 dirbuf[curr_dir_len] = '/';
357 len = curr_dir_len + 1;
358 if (len + dirlen >= MAXPATHLEN)
362 memcpy(dirbuf + len, dir, dirlen);
363 dirbuf[dirlen + len] = '\0';
364 dirbuf_len = clean_fname(dirbuf, CFN_COLLAPSE_DOT_DOT_DIRS);
365 if (dirbuf_len > 1 && dirbuf[dirbuf_len-1] == '.'
366 && dirbuf[dirbuf_len-2] == '/')
369 dirbuf[dirbuf_len++] = '/';
370 dirbuf[dirbuf_len] = '\0';
372 dirbuf_depth = count_dir_elements(dirbuf + module_dirlen);
375 /* This routine takes a per-dir merge-file entry and finishes its setup.
376 * If the name has a path portion then we check to see if it refers to a
377 * parent directory of the first transfer dir. If it does, we scan all the
378 * dirs from that point through the parent dir of the transfer dir looking
379 * for the per-dir merge-file in each one. */
380 static BOOL setup_merge_file(struct filter_struct *ex,
381 struct filter_list_struct *lp)
383 char buf[MAXPATHLEN];
384 char *x, *y, *pat = ex->pattern;
387 if (!(x = parse_merge_name(pat, NULL, 0)) || *x != '/')
392 ex->pattern = strdup(y+1);
396 strlcpy(buf, x, MAXPATHLEN);
398 pathjoin(buf, MAXPATHLEN, dirbuf, x);
400 len = clean_fname(buf, CFN_COLLAPSE_DOT_DOT_DIRS);
401 if (len != 1 && len < MAXPATHLEN-1) {
405 /* This ensures that the specified dir is a parent of the transfer. */
406 for (x = buf, y = dirbuf; *x && *x == *y; x++, y++) {}
408 y += strlen(y); /* nope -- skip the scan */
410 parent_dirscan = True;
412 char save[MAXPATHLEN];
413 strlcpy(save, y, MAXPATHLEN);
415 dirbuf_len = y - dirbuf;
416 strlcpy(x, ex->pattern, MAXPATHLEN - (x - buf));
417 parse_filter_file(lp, buf, ex->match_flags, XFLG_ANCHORED2ABS);
418 if (ex->match_flags & MATCHFLG_NO_INHERIT)
421 strlcpy(y, save, MAXPATHLEN);
422 while ((*x++ = *y++) != '/') {}
424 parent_dirscan = False;
429 /* Each time rsync changes to a new directory it call this function to
430 * handle all the per-dir merge-files. The "dir" value is the current path
431 * relative to curr_dir (which might not be null-terminated). We copy it
432 * into dirbuf so that we can easily append a file name on the end. */
433 void *push_local_filters(const char *dir, unsigned int dirlen)
435 struct filter_list_struct *ap, *push;
438 set_filter_dir(dir, dirlen);
443 push = new_array(struct filter_list_struct, mergelist_cnt);
445 out_of_memory("push_local_filters");
447 for (i = 0, ap = push; i < mergelist_cnt; i++) {
448 memcpy(ap++, mergelist_parents[i]->u.mergelist,
449 sizeof (struct filter_list_struct));
452 /* Note: parse_filter_file() might increase mergelist_cnt, so keep
453 * this loop separate from the above loop. */
454 for (i = 0; i < mergelist_cnt; i++) {
455 struct filter_struct *ex = mergelist_parents[i];
456 struct filter_list_struct *lp = ex->u.mergelist;
459 rprintf(FINFO, "[%s] pushing filter list%s\n",
460 who_am_i(), lp->debug_type);
463 lp->tail = NULL; /* Switch any local rules to inherited. */
464 if (ex->match_flags & MATCHFLG_NO_INHERIT)
467 if (ex->match_flags & MATCHFLG_FINISH_SETUP) {
468 ex->match_flags &= ~MATCHFLG_FINISH_SETUP;
469 if (setup_merge_file(ex, lp))
470 set_filter_dir(dir, dirlen);
473 if (strlcpy(dirbuf + dirbuf_len, ex->pattern,
474 MAXPATHLEN - dirbuf_len) < MAXPATHLEN - dirbuf_len) {
475 parse_filter_file(lp, dirbuf, ex->match_flags,
478 io_error |= IOERR_GENERAL;
480 "cannot add local filter rules in long-named directory: %s\n",
483 dirbuf[dirbuf_len] = '\0';
489 void pop_local_filters(void *mem)
491 struct filter_list_struct *ap, *pop = (struct filter_list_struct*)mem;
494 for (i = mergelist_cnt; i-- > 0; ) {
495 struct filter_struct *ex = mergelist_parents[i];
496 struct filter_list_struct *lp = ex->u.mergelist;
499 rprintf(FINFO, "[%s] popping filter list%s\n",
500 who_am_i(), lp->debug_type);
503 clear_filter_list(lp);
509 for (i = 0, ap = pop; i < mergelist_cnt; i++) {
510 memcpy(mergelist_parents[i]->u.mergelist, ap++,
511 sizeof (struct filter_list_struct));
517 void change_local_filter_dir(const char *dname, int dlen, int dir_depth)
519 static int cur_depth = -1;
520 static void *filt_array[MAXPATHLEN/2+1];
523 for ( ; cur_depth >= 0; cur_depth--) {
524 if (filt_array[cur_depth]) {
525 pop_local_filters(filt_array[cur_depth]);
526 filt_array[cur_depth] = NULL;
532 assert(dir_depth < MAXPATHLEN/2+1);
534 for ( ; cur_depth >= dir_depth; cur_depth--) {
535 if (filt_array[cur_depth]) {
536 pop_local_filters(filt_array[cur_depth]);
537 filt_array[cur_depth] = NULL;
541 cur_depth = dir_depth;
542 filt_array[cur_depth] = push_local_filters(dname, dlen);
545 static int rule_matches(const char *fname, struct filter_struct *ex, int name_is_dir)
547 int slash_handling, str_cnt = 0, anchored_match = 0;
548 int ret_match = ex->match_flags & MATCHFLG_NEGATE ? 0 : 1;
549 char *p, *pattern = ex->pattern;
550 const char *strings[16]; /* more than enough */
551 const char *name = fname + (*fname == '/');
556 if (!ex->u.slash_cnt && !(ex->match_flags & MATCHFLG_WILD2)) {
557 /* If the pattern does not have any slashes AND it does
558 * not have a "**" (which could match a slash), then we
559 * just match the name portion of the path. */
560 if ((p = strrchr(name,'/')) != NULL)
562 } else if (ex->match_flags & MATCHFLG_ABS_PATH && *fname != '/'
563 && curr_dir_len > module_dirlen + 1) {
564 /* If we're matching against an absolute-path pattern,
565 * we need to prepend our full path info. */
566 strings[str_cnt++] = curr_dir + module_dirlen + 1;
567 strings[str_cnt++] = "/";
568 } else if (ex->match_flags & MATCHFLG_WILD2_PREFIX && *fname != '/') {
569 /* Allow "**"+"/" to match at the start of the string. */
570 strings[str_cnt++] = "/";
572 strings[str_cnt++] = name;
574 /* Allow a trailing "/"+"***" to match the directory. */
575 if (ex->match_flags & MATCHFLG_WILD3_SUFFIX)
576 strings[str_cnt++] = "/";
577 } else if (ex->match_flags & MATCHFLG_DIRECTORY)
579 strings[str_cnt] = NULL;
581 if (*pattern == '/') {
586 if (!anchored_match && ex->u.slash_cnt
587 && !(ex->match_flags & MATCHFLG_WILD2)) {
588 /* A non-anchored match with an infix slash and no "**"
589 * needs to match the last slash_cnt+1 name elements. */
590 slash_handling = ex->u.slash_cnt + 1;
591 } else if (!anchored_match && !(ex->match_flags & MATCHFLG_WILD2_PREFIX)
592 && ex->match_flags & MATCHFLG_WILD2) {
593 /* A non-anchored match with an infix or trailing "**" (but not
594 * a prefixed "**") needs to try matching after every slash. */
597 /* The pattern matches only at the start of the path or name. */
601 if (ex->match_flags & MATCHFLG_WILD) {
602 if (wildmatch_array(pattern, strings, slash_handling))
604 } else if (str_cnt > 1) {
605 if (litmatch_array(pattern, strings, slash_handling))
607 } else if (anchored_match) {
608 if (strcmp(name, pattern) == 0)
611 int l1 = strlen(name);
612 int l2 = strlen(pattern);
614 strcmp(name+(l1-l2),pattern) == 0 &&
615 (l1==l2 || name[l1-(l2+1)] == '/')) {
624 static void report_filter_result(enum logcode code, char const *name,
625 struct filter_struct const *ent,
626 int name_is_dir, const char *type)
628 /* If a trailing slash is present to match only directories,
629 * then it is stripped out by add_rule(). So as a special
630 * case we add it back in here. */
633 static char *actions[2][2]
634 = { {"show", "hid"}, {"risk", "protect"} };
635 const char *w = who_am_i();
636 rprintf(code, "[%s] %sing %s %s because of pattern %s%s%s\n",
637 w, actions[*w!='s'][!(ent->match_flags&MATCHFLG_INCLUDE)],
638 name_is_dir ? "directory" : "file", name, ent->pattern,
639 ent->match_flags & MATCHFLG_DIRECTORY ? "/" : "", type);
645 * Return -1 if file "name" is defined to be excluded by the specified
646 * exclude list, 1 if it is included, and 0 if it was not matched.
648 int check_filter(struct filter_list_struct *listp, enum logcode code,
649 const char *name, int name_is_dir)
651 struct filter_struct *ent;
653 for (ent = listp->head; ent; ent = ent->next) {
654 if (ignore_perishable && ent->match_flags & MATCHFLG_PERISHABLE)
656 if (ent->match_flags & MATCHFLG_PERDIR_MERGE) {
657 int rc = check_filter(ent->u.mergelist, code, name,
663 if (ent->match_flags & MATCHFLG_CVS_IGNORE) {
664 int rc = check_filter(&cvs_filter_list, code, name,
670 if (rule_matches(name, ent, name_is_dir)) {
671 report_filter_result(code, name, ent, name_is_dir,
673 return ent->match_flags & MATCHFLG_INCLUDE ? 1 : -1;
680 #define RULE_STRCMP(s,r) rule_strcmp((s), (r), sizeof (r) - 1)
682 static const uchar *rule_strcmp(const uchar *str, const char *rule, int rule_len)
684 if (strncmp((char*)str, rule, rule_len) != 0)
686 if (isspace(str[rule_len]) || str[rule_len] == '_' || !str[rule_len])
687 return str + rule_len - 1;
688 if (str[rule_len] == ',')
689 return str + rule_len;
693 /* Get the next include/exclude arg from the string. The token will not
694 * be '\0' terminated, so use the returned length to limit the string.
695 * Also, be sure to add this length to the returned pointer before passing
696 * it back to ask for the next token. This routine parses the "!" (list-
697 * clearing) token and (depending on the mflags) the various prefixes.
698 * The *mflags_ptr value will be set on exit to the new MATCHFLG_* bits
699 * for the current token. */
700 static const char *parse_rule_tok(const char *p, uint32 mflags, int xflags,
701 unsigned int *len_ptr, uint32 *mflags_ptr)
703 const uchar *s = (const uchar *)p;
707 if (mflags & MATCHFLG_WORD_SPLIT) {
708 /* Skip over any initial whitespace. */
711 /* Update to point to real start of rule. */
717 new_mflags = mflags & MATCHFLGS_FROM_CONTAINER;
719 /* Figure out what kind of a filter rule "s" is pointing at. Note
720 * that if MATCHFLG_NO_PREFIXES is set, the rule is either an include
721 * or an exclude based on the inheritance of the MATCHFLG_INCLUDE
722 * flag (above). XFLG_OLD_PREFIXES indicates a compatibility mode
723 * for old include/exclude patterns where just "+ " and "- " are
724 * allowed as optional prefixes. */
725 if (mflags & MATCHFLG_NO_PREFIXES) {
726 if (*s == '!' && mflags & MATCHFLG_CVS_IGNORE)
727 new_mflags |= MATCHFLG_CLEAR_LIST; /* Tentative! */
728 } else if (xflags & XFLG_OLD_PREFIXES) {
729 if (*s == '-' && s[1] == ' ') {
730 new_mflags &= ~MATCHFLG_INCLUDE;
732 } else if (*s == '+' && s[1] == ' ') {
733 new_mflags |= MATCHFLG_INCLUDE;
735 } else if (*s == '!')
736 new_mflags |= MATCHFLG_CLEAR_LIST; /* Tentative! */
738 char ch = 0, *mods = "";
741 if ((s = RULE_STRCMP(s, "clear")) != NULL)
745 if ((s = RULE_STRCMP(s, "dir-merge")) != NULL)
749 if ((s = RULE_STRCMP(s, "exclude")) != NULL)
753 if ((s = RULE_STRCMP(s, "hide")) != NULL)
757 if ((s = RULE_STRCMP(s, "include")) != NULL)
761 if ((s = RULE_STRCMP(s, "merge")) != NULL)
765 if ((s = RULE_STRCMP(s, "protect")) != NULL)
769 if ((s = RULE_STRCMP(s, "risk")) != NULL)
773 if ((s = RULE_STRCMP(s, "show")) != NULL)
784 new_mflags |= MATCHFLG_PERDIR_MERGE
785 | MATCHFLG_FINISH_SETUP;
788 new_mflags |= MATCHFLG_MERGE_FILE;
789 mods = MODIFIERS_INCL_EXCL MODIFIERS_MERGE_FILE;
792 new_mflags |= MATCHFLG_INCLUDE;
795 mods = MODIFIERS_INCL_EXCL;
798 new_mflags |= MATCHFLG_INCLUDE;
801 new_mflags |= MATCHFLG_SENDER_SIDE;
802 mods = MODIFIERS_HIDE_PROTECT;
805 new_mflags |= MATCHFLG_INCLUDE;
808 new_mflags |= MATCHFLG_RECEIVER_SIDE;
809 mods = MODIFIERS_HIDE_PROTECT;
812 new_mflags |= MATCHFLG_CLEAR_LIST;
816 rprintf(FERROR, "Unknown filter rule: `%s'\n", p);
817 exit_cleanup(RERR_SYNTAX);
819 while (mods && *++s && *s != ' ' && *s != '_') {
820 if (strchr(mods, *s) == NULL) {
821 if (mflags & MATCHFLG_WORD_SPLIT && isspace(*s)) {
827 "invalid modifier sequence at '%c' in filter rule: %s\n",
829 exit_cleanup(RERR_SYNTAX);
833 if (new_mflags & MATCHFLG_NO_PREFIXES)
835 new_mflags |= MATCHFLG_NO_PREFIXES;
838 if (new_mflags & MATCHFLG_NO_PREFIXES)
840 new_mflags |= MATCHFLG_NO_PREFIXES
844 new_mflags |= MATCHFLG_ABS_PATH;
847 new_mflags |= MATCHFLG_NEGATE;
850 if (new_mflags & MATCHFLG_NO_PREFIXES)
852 new_mflags |= MATCHFLG_NO_PREFIXES
853 | MATCHFLG_WORD_SPLIT
854 | MATCHFLG_NO_INHERIT
855 | MATCHFLG_CVS_IGNORE;
858 new_mflags |= MATCHFLG_EXCLUDE_SELF;
861 new_mflags |= MATCHFLG_NO_INHERIT;
864 new_mflags |= MATCHFLG_PERISHABLE;
867 new_mflags |= MATCHFLG_RECEIVER_SIDE;
870 new_mflags |= MATCHFLG_SENDER_SIDE;
873 new_mflags |= MATCHFLG_WORD_SPLIT;
881 if (mflags & MATCHFLG_WORD_SPLIT) {
883 /* Token ends at whitespace or the end of the string. */
884 while (!isspace(*cp) && *cp != '\0')
888 len = strlen((char*)s);
890 if (new_mflags & MATCHFLG_CLEAR_LIST) {
891 if (!(mflags & MATCHFLG_NO_PREFIXES)
892 && !(xflags & XFLG_OLD_PREFIXES) && len) {
894 "'!' rule has trailing characters: %s\n", p);
895 exit_cleanup(RERR_SYNTAX);
898 new_mflags &= ~MATCHFLG_CLEAR_LIST;
899 } else if (!len && !(new_mflags & MATCHFLG_CVS_IGNORE)) {
900 rprintf(FERROR, "unexpected end of filter rule: %s\n", p);
901 exit_cleanup(RERR_SYNTAX);
904 /* --delete-excluded turns an un-modified include/exclude into a
905 * sender-side rule. We also affect per-dir merge files that take
906 * no prefixes as a simple optimization. */
908 && !(new_mflags & (MATCHFLG_RECEIVER_SIDE|MATCHFLG_SENDER_SIDE))
909 && (!(new_mflags & MATCHFLG_PERDIR_MERGE)
910 || new_mflags & MATCHFLG_NO_PREFIXES))
911 new_mflags |= MATCHFLG_SENDER_SIDE;
914 *mflags_ptr = new_mflags;
915 return (const char *)s;
919 static char default_cvsignore[] =
920 /* These default ignored items come from the CVS manual. */
921 "RCS SCCS CVS CVS.adm RCSLOG cvslog.* tags TAGS"
922 " .make.state .nse_depinfo *~ #* .#* ,* _$* *$"
923 " *.old *.bak *.BAK *.orig *.rej .del-*"
924 " *.a *.olb *.o *.obj *.so *.exe"
925 " *.Z *.elc *.ln core"
926 /* The rest we added to suit ourself. */
927 " .svn/ .git/ .bzr/";
929 static void get_cvs_excludes(uint32 mflags)
931 static int initialized = 0;
932 char *p, fname[MAXPATHLEN];
938 parse_rule(&cvs_filter_list, default_cvsignore,
939 mflags | (protocol_version >= 30 ? MATCHFLG_PERISHABLE : 0),
942 p = module_id >= 0 && lp_use_chroot(module_id) ? "/" : getenv("HOME");
943 if (p && pathjoin(fname, MAXPATHLEN, p, ".cvsignore") < MAXPATHLEN)
944 parse_filter_file(&cvs_filter_list, fname, mflags, 0);
946 parse_rule(&cvs_filter_list, getenv("CVSIGNORE"), mflags, 0);
950 void parse_rule(struct filter_list_struct *listp, const char *pattern,
951 uint32 mflags, int xflags)
953 unsigned int pat_len;
961 /* Remember that the returned string is NOT '\0' terminated! */
962 cp = parse_rule_tok(pattern, mflags, xflags,
963 &pat_len, &new_mflags);
967 pattern = cp + pat_len;
969 if (pat_len >= MAXPATHLEN) {
970 rprintf(FERROR, "discarding over-long filter: %.*s\n",
975 if (new_mflags & MATCHFLG_CLEAR_LIST) {
978 "[%s] clearing filter list%s\n",
979 who_am_i(), listp->debug_type);
981 clear_filter_list(listp);
985 if (new_mflags & MATCHFLG_MERGE_FILE) {
992 if (new_mflags & MATCHFLG_EXCLUDE_SELF) {
993 const char *name = cp + len;
994 while (name > cp && name[-1] != '/') name--;
996 add_rule(listp, name, len, 0, 0);
997 new_mflags &= ~MATCHFLG_EXCLUDE_SELF;
1000 if (new_mflags & MATCHFLG_PERDIR_MERGE) {
1001 if (parent_dirscan) {
1002 if (!(p = parse_merge_name(cp, &len,
1005 add_rule(listp, p, len, new_mflags, 0);
1009 if (!(p = parse_merge_name(cp, &len, 0)))
1011 parse_filter_file(listp, p, new_mflags,
1017 add_rule(listp, cp, pat_len, new_mflags, xflags);
1019 if (new_mflags & MATCHFLG_CVS_IGNORE
1020 && !(new_mflags & MATCHFLG_MERGE_FILE))
1021 get_cvs_excludes(new_mflags);
1026 void parse_filter_file(struct filter_list_struct *listp, const char *fname,
1027 uint32 mflags, int xflags)
1030 char line[BIGPATHBUFLEN];
1031 char *eob = line + sizeof line - 1;
1032 int word_split = mflags & MATCHFLG_WORD_SPLIT;
1034 if (!fname || !*fname)
1037 if (*fname != '-' || fname[1] || am_server) {
1038 if (daemon_filter_list.head) {
1039 strlcpy(line, fname, sizeof line);
1040 clean_fname(line, CFN_COLLAPSE_DOT_DOT_DIRS);
1041 if (check_filter(&daemon_filter_list, FLOG, line, 0) < 0)
1044 fp = fopen(line, "rb");
1046 fp = fopen(fname, "rb");
1051 rprintf(FINFO, "[%s] parse_filter_file(%s,%x,%x)%s\n",
1052 who_am_i(), fname, mflags, xflags,
1053 fp ? "" : " [not found]");
1057 if (xflags & XFLG_FATAL_ERRORS) {
1058 rsyserr(FERROR, errno,
1059 "failed to open %sclude file %s",
1060 mflags & MATCHFLG_INCLUDE ? "in" : "ex",
1062 exit_cleanup(RERR_FILEIO);
1066 dirbuf[dirbuf_len] = '\0';
1070 int ch, overflow = 0;
1072 if ((ch = getc(fp)) == EOF) {
1073 if (ferror(fp) && errno == EINTR) {
1079 if (word_split && isspace(ch))
1081 if (eol_nulls? !ch : (ch == '\n' || ch == '\r'))
1089 rprintf(FERROR, "discarding over-long filter: %s...\n", line);
1093 /* Skip an empty token and (when line parsing) comments. */
1094 if (*line && (word_split || (*line != ';' && *line != '#')))
1095 parse_rule(listp, line, mflags, xflags);
1102 /* If the "for_xfer" flag is set, the prefix is made compatible with the
1103 * current protocol_version (if possible) or a NULL is returned (if not
1105 char *get_rule_prefix(int match_flags, const char *pat, int for_xfer,
1106 unsigned int *plen_ptr)
1108 static char buf[MAX_RULE_PREFIX+1];
1110 int legal_len = for_xfer && protocol_version < 29 ? 1 : MAX_RULE_PREFIX-1;
1112 if (match_flags & MATCHFLG_PERDIR_MERGE) {
1116 } else if (match_flags & MATCHFLG_INCLUDE)
1118 else if (legal_len != 1
1119 || ((*pat == '-' || *pat == '+') && pat[1] == ' '))
1124 if (match_flags & MATCHFLG_NEGATE)
1126 if (match_flags & MATCHFLG_CVS_IGNORE)
1129 if (match_flags & MATCHFLG_NO_INHERIT)
1131 if (match_flags & MATCHFLG_WORD_SPLIT)
1133 if (match_flags & MATCHFLG_NO_PREFIXES) {
1134 if (match_flags & MATCHFLG_INCLUDE)
1140 if (match_flags & MATCHFLG_EXCLUDE_SELF)
1142 if (match_flags & MATCHFLG_SENDER_SIDE
1143 && (!for_xfer || protocol_version >= 29))
1145 if (match_flags & MATCHFLG_RECEIVER_SIDE
1146 && (!for_xfer || protocol_version >= 29
1147 || (delete_excluded && am_sender)))
1149 if (match_flags & MATCHFLG_PERISHABLE) {
1150 if (!for_xfer || protocol_version >= 30)
1155 if (op - buf > legal_len)
1161 *plen_ptr = op - buf;
1165 static void send_rules(int f_out, struct filter_list_struct *flp)
1167 struct filter_struct *ent, *prev = NULL;
1169 for (ent = flp->head; ent; ent = ent->next) {
1170 unsigned int len, plen, dlen;
1174 /* Note we need to check delete_excluded here in addition to
1175 * the code in parse_rule_tok() because some rules may have
1176 * been added before we found the --delete-excluded option.
1177 * We must also elide any CVS merge-file rules to avoid a
1178 * backward compatibility problem, and we elide any no-prefix
1179 * merge files as an optimization (since they can only have
1180 * include/exclude rules). */
1181 if (ent->match_flags & MATCHFLG_SENDER_SIDE)
1182 elide = am_sender ? 1 : -1;
1183 if (ent->match_flags & MATCHFLG_RECEIVER_SIDE)
1184 elide = elide ? 0 : am_sender ? -1 : 1;
1185 else if (delete_excluded && !elide
1186 && (!(ent->match_flags & MATCHFLG_PERDIR_MERGE)
1187 || ent->match_flags & MATCHFLG_NO_PREFIXES))
1188 elide = am_sender ? 1 : -1;
1191 prev->next = ent->next;
1193 flp->head = ent->next;
1198 if (ent->match_flags & MATCHFLG_CVS_IGNORE
1199 && !(ent->match_flags & MATCHFLG_MERGE_FILE)) {
1200 int f = am_sender || protocol_version < 29 ? f_out : -2;
1201 send_rules(f, &cvs_filter_list);
1205 p = get_rule_prefix(ent->match_flags, ent->pattern, 1, &plen);
1208 "filter rules are too modern for remote rsync.\n");
1209 exit_cleanup(RERR_PROTOCOL);
1213 len = strlen(ent->pattern);
1214 dlen = ent->match_flags & MATCHFLG_DIRECTORY ? 1 : 0;
1215 if (!(plen + len + dlen))
1217 write_int(f_out, plen + len + dlen);
1219 write_buf(f_out, p, plen);
1220 write_buf(f_out, ent->pattern, len);
1222 write_byte(f_out, '/');
1227 /* This is only called by the client. */
1228 void send_filter_list(int f_out)
1230 int receiver_wants_list = prune_empty_dirs
1231 || (delete_mode && (!delete_excluded || protocol_version >= 29));
1233 if (local_server || (am_sender && !receiver_wants_list))
1235 if (cvs_exclude && am_sender) {
1236 if (protocol_version >= 29)
1237 parse_rule(&filter_list, ":C", 0, 0);
1238 parse_rule(&filter_list, "-C", 0, 0);
1241 send_rules(f_out, &filter_list);
1244 write_int(f_out, 0);
1247 if (!am_sender || protocol_version < 29)
1248 parse_rule(&filter_list, ":C", 0, 0);
1250 parse_rule(&filter_list, "-C", 0, 0);
1254 /* This is only called by the server. */
1255 void recv_filter_list(int f_in)
1257 char line[BIGPATHBUFLEN];
1258 int xflags = protocol_version >= 29 ? 0 : XFLG_OLD_PREFIXES;
1259 int receiver_wants_list = prune_empty_dirs
1261 && (!delete_excluded || protocol_version >= 29));
1264 if (!local_server && (am_sender || receiver_wants_list)) {
1265 while ((len = read_int(f_in)) != 0) {
1266 if (len >= sizeof line)
1267 overflow_exit("recv_rules");
1268 read_sbuf(f_in, line, len);
1269 parse_rule(&filter_list, line, 0, xflags);
1274 if (local_server || am_sender || protocol_version < 29)
1275 parse_rule(&filter_list, ":C", 0, 0);
1276 if (local_server || am_sender)
1277 parse_rule(&filter_list, "-C", 0, 0);
1280 if (local_server) /* filter out any rules that aren't for us. */
1281 send_rules(-1, &filter_list);