add UNCList directive on Windows

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1918549 13f79535-47bb-0310-9956-ffa450edef68

include/http_core.h

@@ -771,6 +771,9 @@ typedef struct {
     apr_int32_t  flush_max_pipelined;
     unsigned int strict_host_check;
     unsigned int merge_slashes;
+#ifdef WIN32
+    apr_array_header_t *unc_list;
+#endif
 } core_server_config;
 
 /* for AddOutputFiltersByType in core.c */

include/httpd.h

@@ -2847,6 +2847,31 @@ AP_DECLARE(const char *)ap_dir_fnmatch(ap_dir_match_t *w, const char *path,
  */
 AP_DECLARE(int) ap_is_chunked(apr_pool_t *p, const char *line);
 
+
+/**
+ * apr_filepath_merge with an allow-list
+ * Merge additional file path onto the previously processed rootpath
+ * @param newpath the merged paths returned
+ * @param rootpath the root file path (NULL uses the current working path)
+ * @param addpath the path to add to the root path
+ * @param flags the desired APR_FILEPATH_ rules to apply when merging
+ * @param p the pool to allocate the new path string from
+ * @remark if the flag APR_FILEPATH_TRUENAME is given, and the addpath
+ * contains wildcard characters ('*', '?') on platforms that don't support
+ * such characters within filenames, the paths will be merged, but the
+ * result code will be APR_EPATHWILD, and all further segments will not
+ * reflect the true filenames including the wildcard and following segments.
+ */
+AP_DECLARE(apr_status_t) ap_filepath_merge(char **newpath,
+                                             const char *rootpath,
+                                             const char *addpath,
+                                             apr_int32_t flags,
+                                             apr_pool_t *p);
+
+#ifdef WIN32
+#define apr_filepath_merge  ap_filepath_merge
+#endif
+
 #ifdef __cplusplus
 }
 #endif