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-rw-r--r--ext/zip/php_zip.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/ext/zip/php_zip.c b/ext/zip/php_zip.c
index f65f70621e..48af712b9c 100644
--- a/ext/zip/php_zip.c
+++ b/ext/zip/php_zip.c
@@ -1480,6 +1480,21 @@ static ZIPARCHIVE_METHOD(open)
ze_obj->filename = NULL;
}
+#if LIBZIP_VERSION_MAJOR > 1 || LIBZIP_VERSION_MAJOR == 1 && LIBZIP_VERSION_MINOR >= 6
+ /* reduce BC break introduce in libzip 1.6.0
+ "Do not accept empty files as valid zip archives any longer" */
+
+ /* open for write without option to empty the archive */
+ if ((flags & (ZIP_TRUNCATE | ZIP_RDONLY)) == 0) {
+ zend_stat_t st;
+
+ /* exists and is empty */
+ if (VCWD_STAT(resolved_path, &st) == 0 && st.st_size == 0) {
+ flags |= ZIP_TRUNCATE;
+ }
+ }
+#endif
+
intern = zip_open(resolved_path, flags, &err);
if (!intern || err) {
efree(resolved_path);