+/* Try to find a filename in the same dir as "fname" with a similar name. */
+static int find_fuzzy(struct file_struct *file, struct file_list *dirlist)
+{
+ int fname_len, fname_suf_len;
+ const char *fname_suf, *fname = file->basename;
+ uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
+ int j, lowest_j = -1;
+
+ fname_len = strlen(fname);
+ fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
+
+ for (j = 0; j < dirlist->used; j++) {
+ struct file_struct *fp = dirlist->files[j];
+ const char *suf, *name;
+ int len, suf_len;
+ uint32 dist;
+
+ if (!S_ISREG(fp->mode) || !F_LENGTH(fp)
+ || fp->flags & FLAG_FILE_SENT)
+ continue;
+
+ name = fp->basename;
+
+ if (F_LENGTH(fp) == F_LENGTH(file)
+ && cmp_time(fp->modtime, file->modtime) == 0) {
+ if (verbose > 4) {
+ rprintf(FINFO,
+ "fuzzy size/modtime match for %s\n",
+ name);
+ }
+ return j;
+ }
+
+ len = strlen(name);
+ suf = find_filename_suffix(name, len, &suf_len);
+
+ dist = fuzzy_distance(name, len, fname, fname_len);
+ /* Add some extra weight to how well the suffixes match. */
+ dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len)
+ * 10;
+ if (verbose > 4) {
+ rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
+ name, (int)(dist>>16), (int)(dist&0xFFFF));
+ }
+ if (dist <= lowest_dist) {
+ lowest_dist = dist;
+ lowest_j = j;
+ }
+ }
+
+ return lowest_j;
+}
+
+/* Copy a file found in our --copy-dest handling. */
+static int copy_altdest_file(const char *src, const char *dest, struct file_struct *file)
+{
+ char buf[MAXPATHLEN];
+ const char *copy_to, *partialptr;
+ int ok, fd_w;
+
+ if (inplace) {
+ /* Let copy_file open the destination in place. */
+ fd_w = -1;
+ copy_to = dest;
+ } else {
+ fd_w = open_tmpfile(buf, dest, file);
+ if (fd_w < 0)
+ return -1;
+ copy_to = buf;
+ }
+ cleanup_set(copy_to, NULL, NULL, -1, -1);
+ if (copy_file(src, copy_to, fd_w, file->mode, 0) < 0) {
+ if (verbose) {
+ rsyserr(FINFO, errno, "copy_file %s => %s",
+ full_fname(src), copy_to);
+ }
+ /* Try to clean up. */
+ unlink(copy_to);
+ cleanup_disable();
+ return -1;
+ }
+ partialptr = partial_dir ? partial_dir_fname(dest) : NULL;
+ ok = finish_transfer(dest, copy_to, src, partialptr, file, 1, 0);
+ cleanup_disable();
+ return ok ? 0 : -1;
+}
+
+/* This is only called for regular files. We return -2 if we've finished
+ * handling the file, -1 if no dest-linking occurred, or a non-negative
+ * value if we found an alternate basis file. */
+static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
+ char *cmpbuf, stat_x *sxp, int itemizing,
+ enum logcode code)
+{
+ int best_match = -1;
+ int match_level = 0;
+ int j = 0;
+
+ do {
+ pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
+ if (link_stat(cmpbuf, &sxp->st, 0) < 0 || !S_ISREG(sxp->st.st_mode))
+ continue;
+ switch (match_level) {
+ case 0:
+ best_match = j;
+ match_level = 1;
+ /* FALL THROUGH */
+ case 1:
+ if (!unchanged_file(cmpbuf, file, &sxp->st))
+ continue;
+ best_match = j;
+ match_level = 2;
+ /* FALL THROUGH */
+ case 2:
+ if (!unchanged_attrs(cmpbuf, file, sxp))
+ continue;
+ best_match = j;
+ match_level = 3;
+ break;
+ }
+ break;
+ } while (basis_dir[++j] != NULL);
+
+ if (!match_level)
+ return -1;
+
+ if (j != best_match) {
+ j = best_match;
+ pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
+ if (link_stat(cmpbuf, &sxp->st, 0) < 0)
+ return -1;
+ }
+
+ if (match_level == 3 && !copy_dest) {
+#ifdef SUPPORT_HARD_LINKS
+ if (link_dest) {
+ if (!hard_link_one(file, fname, cmpbuf, 1))
+ goto try_a_copy;
+ if (preserve_hard_links && F_IS_HLINKED(file))
+ finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, j);
+ if (!maybe_ATTRS_REPORT && (verbose > 1 || stdout_format_has_i > 1)) {
+ itemize(cmpbuf, file, ndx, 1, sxp,
+ ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS,
+ 0, "");
+ }
+ } else
+#endif
+ if (itemizing)
+ itemize(cmpbuf, file, ndx, 0, sxp, 0, 0, NULL);
+ if (verbose > 1 && maybe_ATTRS_REPORT)
+ rprintf(FCLIENT, "%s is uptodate\n", fname);
+ return -2;
+ }
+
+ if (match_level >= 2) {
+#ifdef SUPPORT_HARD_LINKS
+ try_a_copy: /* Copy the file locally. */
+#endif
+ if (!dry_run && copy_altdest_file(cmpbuf, fname, file) < 0)
+ return -1;
+ if (itemizing)
+ itemize(cmpbuf, file, ndx, 0, sxp, ITEM_LOCAL_CHANGE, 0, NULL);
+ if (maybe_ATTRS_REPORT
+ && ((!itemizing && verbose && match_level == 2)
+ || (verbose > 1 && match_level == 3))) {
+ code = match_level == 3 ? FCLIENT : FINFO;
+ rprintf(code, "%s%s\n", fname,
+ match_level == 3 ? " is uptodate" : "");
+ }
+#ifdef SUPPORT_HARD_LINKS
+ if (preserve_hard_links && F_IS_HLINKED(file))
+ finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, -1);
+#endif
+ return -2;
+ }
+
+ return FNAMECMP_BASIS_DIR_LOW + j;
+}
+
+/* This is only called for non-regular files. We return -2 if we've finished
+ * handling the file, or -1 if no dest-linking occurred, or a non-negative
+ * value if we found an alternate basis file. */
+static int try_dests_non(struct file_struct *file, char *fname, int ndx,
+ char *cmpbuf, stat_x *sxp, int itemizing,
+ enum logcode code)
+{
+ char lnk[MAXPATHLEN];
+ int best_match = -1;
+ int match_level = 0;
+ enum nonregtype type;
+ uint32 *devp;
+ int len, j = 0;
+
+#ifndef SUPPORT_LINKS
+ if (S_ISLNK(file->mode))
+ return -1;
+#endif
+ if (S_ISDIR(file->mode)) {
+ type = TYPE_DIR;
+ } else if (IS_SPECIAL(file->mode))
+ type = TYPE_SPECIAL;
+ else if (IS_DEVICE(file->mode))
+ type = TYPE_DEVICE;
+#ifdef SUPPORT_LINKS
+ else if (S_ISLNK(file->mode))
+ type = TYPE_SYMLINK;
+#endif
+ else {
+ rprintf(FERROR,
+ "internal: try_dests_non() called with invalid mode (%o)\n",
+ (int)file->mode);
+ exit_cleanup(RERR_UNSUPPORTED);
+ }