mirror of https://github.com/nextcloud/desktop
287 lines
7.3 KiB
C
287 lines
7.3 KiB
C
/*
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* libcsync -- a library to sync a directory with another
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*
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* Copyright (c) 2008-2013 by Andreas Schneider <asn@cryptomilk.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "config.h"
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "c_lib.h"
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#include "csync_private.h"
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#include "csync_exclude.h"
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#include "csync_misc.h"
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#define CSYNC_LOG_CATEGORY_NAME "csync.exclude"
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#include "csync_log.h"
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static int _csync_exclude_add(CSYNC *ctx, const char *string) {
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c_strlist_t *list;
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if (ctx->excludes == NULL) {
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ctx->excludes = c_strlist_new(32);
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if (ctx->excludes == NULL) {
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return -1;
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}
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}
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if (ctx->excludes->count == ctx->excludes->size) {
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list = c_strlist_expand(ctx->excludes, 2 * ctx->excludes->size);
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if (list == NULL) {
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return -1;
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}
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ctx->excludes = list;
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}
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return c_strlist_add(ctx->excludes, string);
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}
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int csync_exclude_load(CSYNC *ctx, const char *fname) {
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int fd = -1;
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int i = 0;
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int rc = -1;
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int64_t size;
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char *buf = NULL;
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char *entry = NULL;
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mbchar_t *w_fname;
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if (ctx == NULL || fname == NULL) {
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return -1;
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}
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#ifdef _WIN32
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_fmode = _O_BINARY;
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#endif
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w_fname = c_utf8_to_locale(fname);
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if (w_fname == NULL) {
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return -1;
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}
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fd = _topen(w_fname, O_RDONLY);
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c_free_locale_string(w_fname);
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if (fd < 0) {
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return -1;
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}
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size = lseek(fd, 0, SEEK_END);
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if (size < 0) {
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rc = -1;
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goto out;
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}
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lseek(fd, 0, SEEK_SET);
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if (size == 0) {
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rc = 0;
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goto out;
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}
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buf = c_malloc(size + 1);
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if (buf == NULL) {
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rc = -1;
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goto out;
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}
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if (read(fd, buf, size) != size) {
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rc = -1;
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goto out;
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}
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buf[size] = '\0';
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/* FIXME: Use fgets and don't add duplicates */
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entry = buf;
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for (i = 0; i < size; i++) {
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if (buf[i] == '\n' || buf[i] == '\r') {
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if (entry != buf + i) {
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buf[i] = '\0';
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if (*entry != '#') {
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CSYNC_LOG(CSYNC_LOG_PRIORITY_TRACE, "Adding entry: %s", entry);
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rc = _csync_exclude_add(ctx, entry);
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if (rc < 0) {
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goto out;
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}
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}
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}
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entry = buf + i + 1;
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}
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}
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rc = 0;
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out:
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SAFE_FREE(buf);
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close(fd);
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return rc;
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}
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void csync_exclude_clear(CSYNC *ctx) {
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c_strlist_clear(ctx->excludes);
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}
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void csync_exclude_destroy(CSYNC *ctx) {
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c_strlist_destroy(ctx->excludes);
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}
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CSYNC_EXCLUDE_TYPE csync_excluded(CSYNC *ctx, const char *path, int filetype) {
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size_t i = 0;
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const char *p = NULL;
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char *bname = NULL;
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char *dname = NULL;
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char *prev_dname = NULL;
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int rc = -1;
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CSYNC_EXCLUDE_TYPE match = CSYNC_NOT_EXCLUDED;
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CSYNC_EXCLUDE_TYPE type = CSYNC_NOT_EXCLUDED;
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/* exclude the lock file */
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if (c_streq( path, CSYNC_LOCK_FILE )) {
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return CSYNC_FILE_SILENTLY_EXCLUDED;
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}
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if (! ctx->options.unix_extensions) {
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for (p = path; *p; p++) {
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switch (*p) {
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case '\\':
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case ':':
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case '?':
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case '*':
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case '"':
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case '>':
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case '<':
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case '|':
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return CSYNC_FILE_EXCLUDE_INVALID_CHAR;
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default:
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break;
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}
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}
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}
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/* split up the path */
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dname = c_dirname(path);
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bname = c_basename(path);
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if (bname == NULL || dname == NULL) {
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match = CSYNC_NOT_EXCLUDED;
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SAFE_FREE(bname);
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SAFE_FREE(dname);
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goto out;
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}
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rc = csync_fnmatch(".csync_journal.db*", bname, 0);
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if (rc == 0) {
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match = CSYNC_FILE_SILENTLY_EXCLUDED;
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SAFE_FREE(bname);
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SAFE_FREE(dname);
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goto out;
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}
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SAFE_FREE(bname);
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SAFE_FREE(dname);
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SAFE_FREE(bname);
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SAFE_FREE(dname);
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if (ctx->excludes == NULL) {
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goto out;
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}
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/* Loop over all exclude patterns and evaluate the given path */
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for (i = 0; match == CSYNC_NOT_EXCLUDED && i < ctx->excludes->count; i++) {
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bool match_dirs_only = false;
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char *pattern_stored = c_strdup(ctx->excludes->vector[i]);
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char* pattern = pattern_stored;
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type = CSYNC_FILE_EXCLUDE_LIST;
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if (strlen(pattern) < 1) {
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continue;
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}
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/* Ecludes starting with ']' means it can be cleanup */
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if (pattern[0] == ']') {
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++pattern;
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if (filetype == CSYNC_FTW_TYPE_FILE) {
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type = CSYNC_FILE_EXCLUDE_AND_REMOVE;
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}
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}
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/* Check if the pattern applies to pathes only. */
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if (pattern[strlen(pattern)-1] == '/') {
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match_dirs_only = true;
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pattern[strlen(pattern)-1] = '\0'; /* Cut off the slash */
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}
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/* check if the pattern contains a / and if, compare to the whole path */
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if (strchr(pattern, '/')) {
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rc = csync_fnmatch(pattern, path, FNM_PATHNAME);
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if( rc == 0 ) {
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match = type;
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}
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/* if the pattern requires a dir, but path is not, its still not excluded. */
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if (match_dirs_only && filetype != CSYNC_FTW_TYPE_DIR) {
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match = CSYNC_NOT_EXCLUDED;
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}
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}
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/* if still not excluded, check each component of the path */
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if (match == CSYNC_NOT_EXCLUDED) {
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int trailing_component = 1;
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dname = c_dirname(path);
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bname = c_basename(path);
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if (bname == NULL || dname == NULL) {
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match = CSYNC_NOT_EXCLUDED;
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goto out;
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}
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/* Check each component of the path */
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do {
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/* Do not check the bname if its a file and the pattern matches dirs only. */
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if ( !(trailing_component == 1 /* it is the trailing component */
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&& match_dirs_only /* but only directories are matched by the pattern */
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&& filetype == CSYNC_FTW_TYPE_FILE) ) {
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/* Check the name component against the pattern */
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rc = csync_fnmatch(pattern, bname, 0);
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if (rc == 0) {
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match = type;
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}
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}
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if (!(c_streq(dname, ".") || c_streq(dname, "/"))) {
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rc = csync_fnmatch(pattern, dname, 0);
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if (rc == 0) {
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match = type;
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}
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}
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trailing_component = 0;
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prev_dname = dname;
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SAFE_FREE(bname);
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bname = c_basename(prev_dname);
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dname = c_dirname(prev_dname);
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SAFE_FREE(prev_dname);
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} while( match == CSYNC_NOT_EXCLUDED && !c_streq(dname, ".")
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&& !c_streq(dname, "/") );
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}
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SAFE_FREE(pattern_stored);
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SAFE_FREE(bname);
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SAFE_FREE(dname);
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}
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out:
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return match;
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}
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