diff -r 1f76d9624db8 -r bc2cdbf5e68f dav/sync.c
--- a/dav/sync.c	Thu Aug 15 20:25:21 2019 +0200
+++ b/dav/sync.c	Sun Aug 18 09:41:29 2019 +0200
@@ -2521,14 +2521,18 @@
                 }
                 
                 char *new_path = util_concat_path(p, ent->name);
+                DavBool free_new_path = TRUE;
                 LocalResource *res = local_resource_new(dir, db, new_path);
-                if(res->isdirectory) {
-                    resources = ucx_list_append(resources, res);
-                    stack = ucx_list_prepend(stack, new_path);
-                } else if(res) {
-                    resources = ucx_list_append(resources, res);
-                    free(new_path);
-                } else {
+                if(res) {
+                    if(res->isdirectory) {
+                        resources = ucx_list_append(resources, res);
+                        stack = ucx_list_prepend(stack, new_path);
+                        free_new_path = FALSE;
+                    } else {
+                        resources = ucx_list_append(resources, res);
+                    }
+                }
+                if(free_new_path) {
                     free(new_path);
                 }
             }
@@ -2609,6 +2613,7 @@
         res->isdirectory = 1;
     }
     
+    int skip_file = 0;
     if(SYS_ISLINK(file_path, s)) {
         char *lnkbuf = sys_readlink(file_path, &s);
 #ifdef SYS_LINK_EXT
@@ -2653,10 +2658,31 @@
             }
             
             char *dirpath = util_path_normalize(dir->path);
-            if(util_path_isrelated(dirpath, normalized)) {
+            int isintern = util_path_isrelated(dirpath, normalized);
+            
+            
+            if(SYNC_SYMLINK(dir) && isintern) {
                 // the link points to a file inside the syncdir
                 char *rel = util_create_relative_path(normalized, file_path);
                 res->link_target = rel;
+            } else {
+#ifndef SYS_LINK_EXT // if not windows
+                SYS_STAT targetstat;
+                if(!sys_stat(file_path, &targetstat)) {
+                    res->isdirectory = S_ISDIR(targetstat.st_mode);
+                    
+                    int nofollowextern = (dir->symlink & SYNC_SYMLINK_EXTERN_NOFOLLOW) == SYNC_SYMLINK_EXTERN_NOFOLLOW;
+                    int nofollowintern = (dir->symlink & SYNC_SYMLINK_INTERN_NOFOLLOW) == SYNC_SYMLINK_INTERN_NOFOLLOW;
+                    if(isintern && nofollowintern) {
+                        skip_file = TRUE;
+                    } else if(!isintern && nofollowextern) {
+                        skip_file = TRUE;
+                    }
+                } else {
+                    // can't access target, therefore we skip this link
+                    skip_file = TRUE;
+                }
+#endif
             }
             free(dirpath);
             free(normalized);
@@ -2666,6 +2692,11 @@
     
     free(file_path);
     
+    if(skip_file) {
+        local_resource_free(res);
+        res = NULL;
+    }
+    
     return res;
 }
 
@@ -2808,6 +2839,10 @@
         return 0;
     }
     
+    if(remote->iscollection) {
+        return 1;
+    }
+    
     int ret = 0;
     if(err == 0) {
         char *etag = dav_get_string_property(remote, "D:getetag");
@@ -3197,6 +3232,7 @@
                     if(local) {
                         if(local->tags_hash) {
                             free(local->tags_hash);
+                            local->tags_hash = NULL;
                         }
                         local->tags_hash = data_hash;
                     }
@@ -3276,6 +3312,7 @@
                     *changed = TRUE;
                 }
                 free(res->tags_hash);
+                res->tags_hash = NULL;
             } else {
                 if(changed) *changed = TRUE;
             }
@@ -3460,6 +3497,7 @@
     if(hashes.tags) {
         if(local->tags_hash) {
             free(local->tags_hash);
+            local->tags_hash = NULL;
         }
         local->tags_hash = hashes.tags;
     }
@@ -4764,6 +4802,7 @@
             if(!tags) {
                 if(localres->tags_hash) {
                     free(localres->tags_hash);
+                    localres->tags_hash = NULL;
                 }
                 localres->tags_hash = NULL;
             }