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 "/!Crs"
57 #define MODIFIERS_HIDE_PROTECT "/!"
59 /* The dirbuf is set by push_local_filters() to the current subdirectory
60 * relative to curr_dir that is being processed. The path always has a
61 * trailing slash appended, and the variable dirbuf_len contains the length
62 * of this path prefix. The path is always absolute. */
63 static char dirbuf[MAXPATHLEN+1];
64 static unsigned int dirbuf_len = 0;
65 static int dirbuf_depth;
67 /* This is True when we're scanning parent dirs for per-dir merge-files. */
68 static BOOL parent_dirscan = False;
70 /* This array contains a list of all the currently active per-dir merge
71 * files. This makes it easier to save the appropriate values when we
72 * "push" down into each subdirectory. */
73 static struct filter_struct **mergelist_parents;
74 static int mergelist_cnt = 0;
75 static int mergelist_size = 0;
77 /* Each filter_list_struct describes a singly-linked list by keeping track
78 * of both the head and tail pointers. The list is slightly unusual in that
79 * a parent-dir's content can be appended to the end of the local list in a
80 * special way: the last item in the local list has its "next" pointer set
81 * to point to the inherited list, but the local list's tail pointer points
82 * at the end of the local list. Thus, if the local list is empty, the head
83 * will be pointing at the inherited content but the tail will be NULL. To
84 * help you visualize this, here are the possible list arrangements:
86 * Completely Empty Local Content Only
87 * ================================== ====================================
88 * head -> NULL head -> Local1 -> Local2 -> NULL
89 * tail -> NULL tail -------------^
91 * Inherited Content Only Both Local and Inherited Content
92 * ================================== ====================================
93 * head -> Parent1 -> Parent2 -> NULL head -> L1 -> L2 -> P1 -> P2 -> NULL
94 * tail -> NULL tail ---------^
96 * This means that anyone wanting to traverse the whole list to use it just
97 * needs to start at the head and use the "next" pointers until it goes
98 * NULL. To add new local content, we insert the item after the tail item
99 * and update the tail (obviously, if "tail" was NULL, we insert it at the
100 * head). To clear the local list, WE MUST NOT FREE THE INHERITED CONTENT
101 * because it is shared between the current list and our parent list(s).
102 * The easiest way to handle this is to simply truncate the list after the
103 * tail item and then free the local list from the head. When inheriting
104 * the list for a new local dir, we just save off the filter_list_struct
105 * values (so we can pop back to them later) and set the tail to NULL.
108 static void free_filter(struct filter_struct *ex)
110 if (ex->match_flags & MATCHFLG_PERDIR_MERGE) {
111 free(ex->u.mergelist->debug_type);
112 free(ex->u.mergelist);
119 /* Build a filter structure given a filter pattern. The value in "pat"
120 * is not null-terminated. */
121 static void add_rule(struct filter_list_struct *listp, const char *pat,
122 unsigned int pat_len, uint32 mflags, int xflags)
124 struct filter_struct *ret;
129 rprintf(FINFO, "[%s] add_rule(%s%.*s%s)%s\n",
130 who_am_i(), get_rule_prefix(mflags, pat, 0, NULL),
132 (mflags & MATCHFLG_DIRECTORY) ? "/" : "",
136 /* This flag also indicates that we're reading a list that
137 * needs to be filtered now, not post-filtered later. */
138 if (xflags & XFLG_ANCHORED2ABS) {
139 uint32 mf = mflags & (MATCHFLG_RECEIVER_SIDE|MATCHFLG_SENDER_SIDE);
141 if (mf == MATCHFLG_RECEIVER_SIDE)
144 if (mf == MATCHFLG_SENDER_SIDE)
149 if (!(ret = new(struct filter_struct)))
150 out_of_memory("add_rule");
151 memset(ret, 0, sizeof ret[0]);
153 if (xflags & XFLG_ANCHORED2ABS && *pat == '/'
154 && !(mflags & (MATCHFLG_ABS_PATH | MATCHFLG_MERGE_FILE))) {
155 mflags |= MATCHFLG_ABS_PATH;
156 ex_len = dirbuf_len - module_dirlen - 1;
159 if (!(ret->pattern = new_array(char, ex_len + pat_len + 1)))
160 out_of_memory("add_rule");
162 memcpy(ret->pattern, dirbuf + module_dirlen, ex_len);
163 strlcpy(ret->pattern + ex_len, pat, pat_len + 1);
166 if (strpbrk(ret->pattern, "*[?")) {
167 mflags |= MATCHFLG_WILD;
168 if ((cp = strstr(ret->pattern, "**")) != NULL) {
169 mflags |= MATCHFLG_WILD2;
170 /* If the pattern starts with **, note that. */
171 if (cp == ret->pattern)
172 mflags |= MATCHFLG_WILD2_PREFIX;
176 if (pat_len > 1 && ret->pattern[pat_len-1] == '/') {
177 ret->pattern[pat_len-1] = 0;
178 mflags |= MATCHFLG_DIRECTORY;
181 if (mflags & MATCHFLG_PERDIR_MERGE) {
182 struct filter_list_struct *lp;
186 if ((cp = strrchr(ret->pattern, '/')) != NULL)
191 /* If the local merge file was already mentioned, don't
193 for (i = 0; i < mergelist_cnt; i++) {
194 struct filter_struct *ex = mergelist_parents[i];
195 const char *s = strrchr(ex->pattern, '/');
201 if (len == pat_len - (cp - ret->pattern)
202 && memcmp(s, cp, len) == 0) {
208 if (!(lp = new_array(struct filter_list_struct, 1)))
209 out_of_memory("add_rule");
210 lp->head = lp->tail = NULL;
211 if (asprintf(&lp->debug_type, " [per-dir %s]", cp) < 0)
212 out_of_memory("add_rule");
213 ret->u.mergelist = lp;
215 if (mergelist_cnt == mergelist_size) {
217 mergelist_parents = realloc_array(mergelist_parents,
218 struct filter_struct *,
220 if (!mergelist_parents)
221 out_of_memory("add_rule");
223 mergelist_parents[mergelist_cnt++] = ret;
225 for (cp = ret->pattern; (cp = strchr(cp, '/')) != NULL; cp++)
229 ret->match_flags = mflags;
232 ret->next = listp->head;
233 listp->head = listp->tail = ret;
235 ret->next = listp->tail->next;
236 listp->tail->next = ret;
241 static void clear_filter_list(struct filter_list_struct *listp)
244 struct filter_struct *ent, *next;
245 /* Truncate any inherited items from the local list. */
246 listp->tail->next = NULL;
247 /* Now free everything that is left. */
248 for (ent = listp->head; ent; ent = next) {
254 listp->head = listp->tail = NULL;
257 /* This returns an expanded (absolute) filename for the merge-file name if
258 * the name has any slashes in it OR if the parent_dirscan var is True;
259 * otherwise it returns the original merge_file name. If the len_ptr value
260 * is non-NULL the merge_file name is limited by the referenced length
261 * value and will be updated with the length of the resulting name. We
262 * always return a name that is null terminated, even if the merge_file
264 static char *parse_merge_name(const char *merge_file, unsigned int *len_ptr,
265 unsigned int prefix_skip)
267 static char buf[MAXPATHLEN];
268 char *fn, tmpbuf[MAXPATHLEN];
271 if (!parent_dirscan && *merge_file != '/') {
272 /* Return the name unchanged it doesn't have any slashes. */
274 const char *p = merge_file + *len_ptr;
275 while (--p > merge_file && *p != '/') {}
276 if (p == merge_file) {
277 strlcpy(buf, merge_file, *len_ptr + 1);
280 } else if (strchr(merge_file, '/') == NULL)
281 return (char *)merge_file;
284 fn = *merge_file == '/' ? buf : tmpbuf;
285 if (sanitize_paths) {
286 const char *r = prefix_skip ? "/" : NULL;
287 /* null-terminate the name if it isn't already */
288 if (len_ptr && merge_file[*len_ptr]) {
289 char *to = fn == buf ? tmpbuf : buf;
290 strlcpy(to, merge_file, *len_ptr + 1);
293 if (!sanitize_path(fn, merge_file, r, dirbuf_depth)) {
294 rprintf(FERROR, "merge-file name overflows: %s\n",
295 safe_fname(merge_file));
299 strlcpy(fn, merge_file, len_ptr ? *len_ptr + 1 : MAXPATHLEN);
307 if (dirbuf_len + fn_len >= MAXPATHLEN) {
308 rprintf(FERROR, "merge-file name overflows: %s\n",
312 memcpy(buf, dirbuf + prefix_skip, dirbuf_len - prefix_skip);
313 memcpy(buf + dirbuf_len - prefix_skip, fn, fn_len + 1);
314 fn_len = clean_fname(buf, 1);
322 /* Sets the dirbuf and dirbuf_len values. */
323 void set_filter_dir(const char *dir, unsigned int dirlen)
327 memcpy(dirbuf, curr_dir, curr_dir_len);
328 dirbuf[curr_dir_len] = '/';
329 len = curr_dir_len + 1;
330 if (len + dirlen >= MAXPATHLEN)
334 memcpy(dirbuf + len, dir, dirlen);
335 dirbuf[dirlen + len] = '\0';
336 dirbuf_len = clean_fname(dirbuf, 1);
337 if (dirbuf_len > 1 && dirbuf[dirbuf_len-1] == '.'
338 && dirbuf[dirbuf_len-2] == '/')
341 dirbuf[dirbuf_len++] = '/';
342 dirbuf[dirbuf_len] = '\0';
344 dirbuf_depth = count_dir_elements(dirbuf + module_dirlen);
347 /* This routine takes a per-dir merge-file entry and finishes its setup.
348 * If the name has a path portion then we check to see if it refers to a
349 * parent directory of the first transfer dir. If it does, we scan all the
350 * dirs from that point through the parent dir of the transfer dir looking
351 * for the per-dir merge-file in each one. */
352 static BOOL setup_merge_file(struct filter_struct *ex,
353 struct filter_list_struct *lp)
355 char buf[MAXPATHLEN];
356 char *x, *y, *pat = ex->pattern;
359 if (!(x = parse_merge_name(pat, NULL, 0)) || *x != '/')
364 ex->pattern = strdup(y+1);
368 strlcpy(buf, x, MAXPATHLEN);
370 pathjoin(buf, MAXPATHLEN, dirbuf, x);
372 len = clean_fname(buf, 1);
373 if (len != 1 && len < MAXPATHLEN-1) {
377 /* This ensures that the specified dir is a parent of the transfer. */
378 for (x = buf, y = dirbuf; *x && *x == *y; x++, y++) {}
380 y += strlen(y); /* nope -- skip the scan */
382 parent_dirscan = True;
384 char save[MAXPATHLEN];
385 strlcpy(save, y, MAXPATHLEN);
387 dirbuf_len = y - dirbuf;
388 strlcpy(x, ex->pattern, MAXPATHLEN - (x - buf));
389 parse_filter_file(lp, buf, ex->match_flags, XFLG_ANCHORED2ABS);
390 if (ex->match_flags & MATCHFLG_NO_INHERIT)
393 strlcpy(y, save, MAXPATHLEN);
394 while ((*x++ = *y++) != '/') {}
396 parent_dirscan = False;
401 /* Each time rsync changes to a new directory it call this function to
402 * handle all the per-dir merge-files. The "dir" value is the current path
403 * relative to curr_dir (which might not be null-terminated). We copy it
404 * into dirbuf so that we can easily append a file name on the end. */
405 void *push_local_filters(const char *dir, unsigned int dirlen)
407 struct filter_list_struct *ap, *push;
410 set_filter_dir(dir, dirlen);
415 push = new_array(struct filter_list_struct, mergelist_cnt);
417 out_of_memory("push_local_filters");
419 for (i = 0, ap = push; i < mergelist_cnt; i++) {
420 memcpy(ap++, mergelist_parents[i]->u.mergelist,
421 sizeof (struct filter_list_struct));
424 /* Note: parse_filter_file() might increase mergelist_cnt, so keep
425 * this loop separate from the above loop. */
426 for (i = 0; i < mergelist_cnt; i++) {
427 struct filter_struct *ex = mergelist_parents[i];
428 struct filter_list_struct *lp = ex->u.mergelist;
431 rprintf(FINFO, "[%s] pushing filter list%s\n",
432 who_am_i(), lp->debug_type);
435 lp->tail = NULL; /* Switch any local rules to inherited. */
436 if (ex->match_flags & MATCHFLG_NO_INHERIT)
439 if (ex->match_flags & MATCHFLG_FINISH_SETUP) {
440 ex->match_flags &= ~MATCHFLG_FINISH_SETUP;
441 if (setup_merge_file(ex, lp))
442 set_filter_dir(dir, dirlen);
445 if (strlcpy(dirbuf + dirbuf_len, ex->pattern,
446 MAXPATHLEN - dirbuf_len) < MAXPATHLEN - dirbuf_len) {
447 parse_filter_file(lp, dirbuf, ex->match_flags,
450 io_error |= IOERR_GENERAL;
452 "cannot add local filter rules in long-named directory: %s\n",
455 dirbuf[dirbuf_len] = '\0';
461 void pop_local_filters(void *mem)
463 struct filter_list_struct *ap, *pop = (struct filter_list_struct*)mem;
466 for (i = mergelist_cnt; i-- > 0; ) {
467 struct filter_struct *ex = mergelist_parents[i];
468 struct filter_list_struct *lp = ex->u.mergelist;
471 rprintf(FINFO, "[%s] popping filter list%s\n",
472 who_am_i(), lp->debug_type);
475 clear_filter_list(lp);
481 for (i = 0, ap = pop; i < mergelist_cnt; i++) {
482 memcpy(mergelist_parents[i]->u.mergelist, ap++,
483 sizeof (struct filter_list_struct));
489 static int rule_matches(char *name, struct filter_struct *ex, int name_is_dir)
491 char *p, full_name[MAXPATHLEN];
493 int ret_match = ex->match_flags & MATCHFLG_NEGATE ? 0 : 1;
494 char *pattern = ex->pattern;
499 /* If the pattern does not have any slashes AND it does not have
500 * a "**" (which could match a slash), then we just match the
501 * name portion of the path. */
502 if (!ex->u.slash_cnt && !(ex->match_flags & MATCHFLG_WILD2)) {
503 if ((p = strrchr(name,'/')) != NULL)
506 else if (ex->match_flags & MATCHFLG_ABS_PATH && *name != '/'
507 && curr_dir_len > module_dirlen + 1) {
508 pathjoin(full_name, sizeof full_name,
509 curr_dir + module_dirlen + 1, name);
513 if (ex->match_flags & MATCHFLG_DIRECTORY && !name_is_dir)
516 if (*pattern == '/') {
523 if (ex->match_flags & MATCHFLG_WILD) {
524 /* A non-anchored match with an infix slash and no "**"
525 * needs to match the last slash_cnt+1 name elements. */
526 if (!match_start && ex->u.slash_cnt
527 && !(ex->match_flags & MATCHFLG_WILD2)) {
528 int cnt = ex->u.slash_cnt + 1;
529 for (p = name + strlen(name) - 1; p >= name; p--) {
530 if (*p == '/' && !--cnt)
535 if (wildmatch(pattern, name))
537 if (ex->match_flags & MATCHFLG_WILD2_PREFIX) {
538 /* If the **-prefixed pattern has a '/' as the next
539 * character, then try to match the rest of the
540 * pattern at the root. */
541 if (pattern[2] == '/' && wildmatch(pattern+3, name))
544 else if (!match_start && ex->match_flags & MATCHFLG_WILD2) {
545 /* A non-anchored match with an infix or trailing "**"
546 * (but not a prefixed "**") needs to try matching
547 * after every slash. */
548 while ((name = strchr(name, '/')) != NULL) {
550 if (wildmatch(pattern, name))
554 } else if (match_start) {
555 if (strcmp(name,pattern) == 0)
558 int l1 = strlen(name);
559 int l2 = strlen(pattern);
561 strcmp(name+(l1-l2),pattern) == 0 &&
562 (l1==l2 || name[l1-(l2+1)] == '/')) {
571 static void report_filter_result(char const *name,
572 struct filter_struct const *ent,
573 int name_is_dir, const char *type)
575 /* If a trailing slash is present to match only directories,
576 * then it is stripped out by add_rule(). So as a special
577 * case we add it back in here. */
580 rprintf(FINFO, "[%s] %scluding %s %s because of pattern %s%s%s\n",
582 ent->match_flags & MATCHFLG_INCLUDE ? "in" : "ex",
583 name_is_dir ? "directory" : "file", name, ent->pattern,
584 ent->match_flags & MATCHFLG_DIRECTORY ? "/" : "", type);
590 * Return -1 if file "name" is defined to be excluded by the specified
591 * exclude list, 1 if it is included, and 0 if it was not matched.
593 int check_filter(struct filter_list_struct *listp, char *name, int name_is_dir)
595 struct filter_struct *ent;
597 for (ent = listp->head; ent; ent = ent->next) {
598 if (ent->match_flags & MATCHFLG_PERDIR_MERGE) {
599 int rc = check_filter(ent->u.mergelist, name,
605 if (ent->match_flags & MATCHFLG_CVS_IGNORE) {
606 int rc = check_filter(&cvs_filter_list, name,
612 if (rule_matches(name, ent, name_is_dir)) {
613 report_filter_result(name, ent, name_is_dir,
615 return ent->match_flags & MATCHFLG_INCLUDE ? 1 : -1;
622 #define RULE_STRCMP(s,r) rule_strcmp((s), (r), sizeof (r) - 1)
624 static const uchar *rule_strcmp(const uchar *str, const char *rule, int rule_len)
626 if (strncmp((char*)str, rule, rule_len) != 0)
628 if (isspace(str[rule_len]) || str[rule_len] == '_' || !str[rule_len])
629 return str + rule_len - 1;
630 if (str[rule_len] == ',')
631 return str + rule_len;
635 /* Get the next include/exclude arg from the string. The token will not
636 * be '\0' terminated, so use the returned length to limit the string.
637 * Also, be sure to add this length to the returned pointer before passing
638 * it back to ask for the next token. This routine parses the "!" (list-
639 * clearing) token and (depending on the mflags) the various prefixes.
640 * The *mflags_ptr value will be set on exit to the new MATCHFLG_* bits
641 * for the current token. */
642 static const char *parse_rule_tok(const char *p, uint32 mflags, int xflags,
643 unsigned int *len_ptr, uint32 *mflags_ptr)
645 const uchar *s = (const uchar *)p;
649 if (mflags & MATCHFLG_WORD_SPLIT) {
650 /* Skip over any initial whitespace. */
653 /* Update to point to real start of rule. */
659 new_mflags = mflags & MATCHFLGS_FROM_CONTAINER;
661 /* Figure out what kind of a filter rule "s" is pointing at. Note
662 * that if MATCHFLG_NO_PREFIXES is set, the rule is either an include
663 * or an exclude based on the inheritance of the MATCHFLG_INCLUDE
664 * flag (above). XFLG_OLD_PREFIXES indicates a compatibility mode
665 * for old include/exclude patterns where just "+ " and "- " are
666 * allowed as optional prefixes. */
667 if (mflags & MATCHFLG_NO_PREFIXES) {
668 if (*s == '!' && mflags & MATCHFLG_CVS_IGNORE)
669 new_mflags |= MATCHFLG_CLEAR_LIST; /* Tentative! */
670 } else if (xflags & XFLG_OLD_PREFIXES) {
671 if (*s == '-' && s[1] == ' ') {
672 new_mflags &= ~MATCHFLG_INCLUDE;
674 } else if (*s == '+' && s[1] == ' ') {
675 new_mflags |= MATCHFLG_INCLUDE;
679 new_mflags |= MATCHFLG_CLEAR_LIST; /* Tentative! */
681 char ch = 0, *mods = "";
684 if ((s = RULE_STRCMP(s, "clear")) != NULL)
688 if ((s = RULE_STRCMP(s, "dir-merge")) != NULL)
692 if ((s = RULE_STRCMP(s, "exclude")) != NULL)
696 if ((s = RULE_STRCMP(s, "hide")) != NULL)
700 if ((s = RULE_STRCMP(s, "include")) != NULL)
704 if ((s = RULE_STRCMP(s, "merge")) != NULL)
708 if ((s = RULE_STRCMP(s, "protect")) != NULL)
712 if ((s = RULE_STRCMP(s, "risk")) != NULL)
716 if ((s = RULE_STRCMP(s, "show")) != NULL)
728 new_mflags |= MATCHFLG_PERDIR_MERGE
729 | MATCHFLG_FINISH_SETUP;
732 new_mflags |= MATCHFLG_MERGE_FILE;
733 mods = MODIFIERS_INCL_EXCL MODIFIERS_MERGE_FILE;
736 new_mflags |= MATCHFLG_INCLUDE;
739 mods = MODIFIERS_INCL_EXCL;
742 new_mflags |= MATCHFLG_INCLUDE;
745 new_mflags |= MATCHFLG_SENDER_SIDE;
746 mods = MODIFIERS_HIDE_PROTECT;
749 new_mflags |= MATCHFLG_INCLUDE;
752 new_mflags |= MATCHFLG_RECEIVER_SIDE;
753 mods = MODIFIERS_HIDE_PROTECT;
756 new_mflags |= MATCHFLG_CLEAR_LIST;
760 rprintf(FERROR, "Unknown filter rule: `%s'\n", p);
761 exit_cleanup(RERR_SYNTAX);
763 while (mods && *++s && *s != ' ' && *s != '_') {
764 if (strchr(mods, *s) == NULL) {
765 if (mflags & MATCHFLG_WORD_SPLIT && isspace(*s)) {
771 "invalid modifier sequence at '%c' in filter rule: %s\n",
773 exit_cleanup(RERR_SYNTAX);
777 if (new_mflags & MATCHFLG_NO_PREFIXES)
779 new_mflags |= MATCHFLG_NO_PREFIXES;
782 if (new_mflags & MATCHFLG_NO_PREFIXES)
784 new_mflags |= MATCHFLG_NO_PREFIXES
788 new_mflags |= MATCHFLG_ABS_PATH;
791 new_mflags |= MATCHFLG_NEGATE;
794 if (new_mflags & MATCHFLG_NO_PREFIXES)
796 new_mflags |= MATCHFLG_NO_PREFIXES
797 | MATCHFLG_WORD_SPLIT
798 | MATCHFLG_NO_INHERIT
799 | MATCHFLG_CVS_IGNORE;
802 new_mflags |= MATCHFLG_EXCLUDE_SELF;
805 new_mflags |= MATCHFLG_NO_INHERIT;
808 new_mflags |= MATCHFLG_RECEIVER_SIDE;
811 new_mflags |= MATCHFLG_SENDER_SIDE;
814 new_mflags |= MATCHFLG_WORD_SPLIT;
822 if (mflags & MATCHFLG_WORD_SPLIT) {
824 /* Token ends at whitespace or the end of the string. */
825 while (!isspace(*cp) && *cp != '\0')
829 len = strlen((char*)s);
831 if (new_mflags & MATCHFLG_CLEAR_LIST) {
832 if (!(xflags & XFLG_OLD_PREFIXES) && len) {
834 "'!' rule has trailing characters: %s\n", p);
835 exit_cleanup(RERR_SYNTAX);
838 new_mflags &= ~MATCHFLG_CLEAR_LIST;
839 } else if (!len && !(new_mflags & MATCHFLG_CVS_IGNORE)) {
840 rprintf(FERROR, "unexpected end of filter rule: %s\n", p);
841 exit_cleanup(RERR_SYNTAX);
845 *mflags_ptr = new_mflags;
846 return (const char *)s;
850 static char default_cvsignore[] =
851 /* These default ignored items come from the CVS manual. */
852 "RCS SCCS CVS CVS.adm RCSLOG cvslog.* tags TAGS"
853 " .make.state .nse_depinfo *~ #* .#* ,* _$* *$"
854 " *.old *.bak *.BAK *.orig *.rej .del-*"
855 " *.a *.olb *.o *.obj *.so *.exe"
856 " *.Z *.elc *.ln core"
857 /* The rest we added to suit ourself. */
860 static void get_cvs_excludes(uint32 mflags)
862 char *p, fname[MAXPATHLEN];
863 static int initialized = 0;
869 parse_rule(&cvs_filter_list, default_cvsignore, mflags, 0);
871 p = module_id >= 0 && lp_use_chroot(module_id) ? "/" : getenv("HOME");
872 if (p && pathjoin(fname, MAXPATHLEN, p, ".cvsignore") < MAXPATHLEN)
873 parse_filter_file(&cvs_filter_list, fname, mflags, 0);
875 parse_rule(&cvs_filter_list, getenv("CVSIGNORE"), mflags, 0);
879 void parse_rule(struct filter_list_struct *listp, const char *pattern,
880 uint32 mflags, int xflags)
882 unsigned int pat_len;
890 /* Remember that the returned string is NOT '\0' terminated! */
891 cp = parse_rule_tok(pattern, mflags, xflags,
892 &pat_len, &new_mflags);
895 if (pat_len >= MAXPATHLEN) {
896 rprintf(FERROR, "discarding over-long filter: %s\n",
900 pattern = cp + pat_len;
902 if (new_mflags & MATCHFLG_CLEAR_LIST) {
905 "[%s] clearing filter list%s\n",
906 who_am_i(), listp->debug_type);
908 clear_filter_list(listp);
912 if (new_mflags & MATCHFLG_MERGE_FILE) {
919 if (new_mflags & MATCHFLG_EXCLUDE_SELF) {
920 const char *name = strrchr(cp, '/');
925 add_rule(listp, name, len, 0, 0);
926 new_mflags &= ~MATCHFLG_EXCLUDE_SELF;
929 if (new_mflags & MATCHFLG_PERDIR_MERGE) {
930 if (parent_dirscan) {
931 if (!(p = parse_merge_name(cp, &len,
934 add_rule(listp, p, len, new_mflags, 0);
938 if (!(p = parse_merge_name(cp, &len, 0)))
940 parse_filter_file(listp, p, new_mflags,
946 add_rule(listp, cp, pat_len, new_mflags, xflags);
948 if (new_mflags & MATCHFLG_CVS_IGNORE
949 && !(new_mflags & MATCHFLG_MERGE_FILE))
950 get_cvs_excludes(new_mflags);
955 void parse_filter_file(struct filter_list_struct *listp, const char *fname,
956 uint32 mflags, int xflags)
959 char line[MAXPATHLEN+MAX_RULE_PREFIX+1]; /* +1 for trailing slash. */
960 char *eob = line + sizeof line - 1;
961 int word_split = mflags & MATCHFLG_WORD_SPLIT;
963 if (!fname || !*fname)
966 if (*fname != '-' || fname[1] || am_server) {
967 if (server_filter_list.head) {
968 strlcpy(line, fname, sizeof line);
969 clean_fname(line, 1);
970 if (check_filter(&server_filter_list, line, 0) < 0)
973 fp = fopen(line, "rb");
975 fp = fopen(fname, "rb");
980 rprintf(FINFO, "[%s] parse_filter_file(%s,%x,%x)%s\n",
981 who_am_i(), safe_fname(fname), mflags, xflags,
982 fp ? "" : " [not found]");
986 if (xflags & XFLG_FATAL_ERRORS) {
987 rsyserr(FERROR, errno,
988 "failed to open %sclude file %s",
989 mflags & MATCHFLG_INCLUDE ? "in" : "ex",
991 exit_cleanup(RERR_FILEIO);
995 dirbuf[dirbuf_len] = '\0';
999 int ch, overflow = 0;
1001 if ((ch = getc(fp)) == EOF) {
1002 if (ferror(fp) && errno == EINTR)
1006 if (word_split && isspace(ch))
1008 if (eol_nulls? !ch : (ch == '\n' || ch == '\r'))
1016 rprintf(FERROR, "discarding over-long filter: %s...\n", line);
1020 /* Skip an empty token and (when line parsing) comments. */
1021 if (*line && (word_split || (*line != ';' && *line != '#')))
1022 parse_rule(listp, line, mflags, xflags);
1029 /* If the "for_xfer" flag is set, the prefix is made compatible with the
1030 * current protocol_version (if possible) or a NULL is returned (if not
1032 char *get_rule_prefix(int match_flags, const char *pat, int for_xfer,
1033 unsigned int *plen_ptr)
1035 static char buf[MAX_RULE_PREFIX+1];
1037 int legal_len = for_xfer && protocol_version < 29 ? 1 : MAX_RULE_PREFIX-1;
1039 if (match_flags & MATCHFLG_PERDIR_MERGE) {
1043 } else if (match_flags & MATCHFLG_INCLUDE)
1045 else if (legal_len != 1
1046 || ((*pat == '-' || *pat == '+') && pat[1] == ' '))
1051 if (match_flags & MATCHFLG_CVS_IGNORE)
1054 if (match_flags & MATCHFLG_NO_INHERIT)
1056 if (match_flags & MATCHFLG_WORD_SPLIT)
1058 if (match_flags & MATCHFLG_NO_PREFIXES) {
1059 if (match_flags & MATCHFLG_INCLUDE)
1065 if (match_flags & MATCHFLG_EXCLUDE_SELF)
1067 if (match_flags & MATCHFLG_SENDER_SIDE
1068 && (!for_xfer || protocol_version >= 29))
1070 if (match_flags & MATCHFLG_RECEIVER_SIDE
1071 && (!for_xfer || protocol_version >= 29
1072 || (delete_excluded && am_sender)))
1074 if (op - buf > legal_len)
1080 *plen_ptr = op - buf;
1084 static void send_rules(int f_out, struct filter_list_struct *flp)
1086 struct filter_struct *ent, *prev = NULL;
1088 for (ent = flp->head; ent; ent = ent->next) {
1089 unsigned int len, plen, dlen;
1093 if (ent->match_flags & MATCHFLG_SENDER_SIDE)
1094 elide = am_sender ? 1 : -1;
1095 if (ent->match_flags & MATCHFLG_RECEIVER_SIDE)
1096 elide = elide ? 0 : am_sender ? -1 : 1;
1097 else if (delete_excluded && !elide)
1098 elide = am_sender ? 1 : -1;
1101 prev->next = ent->next;
1103 flp->head = ent->next;
1108 if (ent->match_flags & MATCHFLG_CVS_IGNORE
1109 && !(ent->match_flags & MATCHFLG_MERGE_FILE)) {
1110 int f = am_sender || protocol_version < 29 ? f_out : -1;
1111 send_rules(f, &cvs_filter_list);
1115 p = get_rule_prefix(ent->match_flags, ent->pattern, 1, &plen);
1118 "filter rules are too modern for remote rsync.\n");
1119 exit_cleanup(RERR_SYNTAX);
1123 len = strlen(ent->pattern);
1124 dlen = ent->match_flags & MATCHFLG_DIRECTORY ? 1 : 0;
1125 if (!(plen + len + dlen))
1127 write_int(f_out, plen + len + dlen);
1129 write_buf(f_out, p, plen);
1130 write_buf(f_out, ent->pattern, len);
1132 write_byte(f_out, '/');
1137 /* This is only called by the client. */
1138 void send_filter_list(int f_out)
1140 int receiver_wants_list = delete_mode
1141 && (!delete_excluded || protocol_version >= 29);
1143 if (local_server || (am_sender && !receiver_wants_list))
1145 if (cvs_exclude && am_sender) {
1146 if (protocol_version >= 29)
1147 parse_rule(&filter_list, ":C", 0, 0);
1148 parse_rule(&filter_list, "-C", 0, 0);
1151 /* This is a complete hack - blame Rusty. FIXME!
1152 * Remove this hack when older rsyncs (below 2.6.4) are gone. */
1153 if (list_only == 1 && !recurse)
1154 parse_rule(&filter_list, "/*/*", MATCHFLG_NO_PREFIXES, 0);
1156 send_rules(f_out, &filter_list);
1159 write_int(f_out, 0);
1162 if (!am_sender || protocol_version < 29)
1163 parse_rule(&filter_list, ":C", 0, 0);
1165 parse_rule(&filter_list, "-C", 0, 0);
1169 /* This is only called by the server. */
1170 void recv_filter_list(int f_in)
1172 char line[MAXPATHLEN+MAX_RULE_PREFIX+1]; /* +1 for trailing slash. */
1173 int xflags = protocol_version >= 29 ? 0 : XFLG_OLD_PREFIXES;
1174 int receiver_wants_list = delete_mode
1175 && (!delete_excluded || protocol_version >= 29);
1178 if (!local_server && (am_sender || receiver_wants_list)) {
1179 while ((len = read_int(f_in)) != 0) {
1180 if (len >= sizeof line)
1181 overflow("recv_rules");
1182 read_sbuf(f_in, line, len);
1183 parse_rule(&filter_list, line, 0, xflags);
1188 if (local_server || am_sender || protocol_version < 29)
1189 parse_rule(&filter_list, ":C", 0, 0);
1190 if (local_server || am_sender)
1191 parse_rule(&filter_list, "-C", 0, 0);
1194 if (local_server) /* filter out any rules that aren't for us. */
1195 send_rules(-1, &filter_list);