Hygiene, protect against NULL filenames in _warc_header()

Return ARCHIVE_WARN immediately.

diff --git a/libarchive/archive_write_set_format_warc.c b/libarchive/archive_write_set_format_warc.c
index f16c8b1a277a1c2fd3173f69335143658decf59e..cd1fde9f9074afe39c573a8374dbd65464365c65 100644 (file)
--- a/libarchive/archive_write_set_format_warc.c
+++ b/libarchive/archive_write_set_format_warc.c
@@ -216,6 +216,12 @@ _warc_header(struct archive_write *a, struct archive_entry *entry)
                w->omit_warcinfo = 1U;
        }
 
+       if (archive_entry_pathname(entry) == NULL) {
+               archive_set_error(&a->archive, EINVAL,
+                   "Invalid filename");
+               return (ARCHIVE_WARN);
+       }
+
        w->typ = archive_entry_filetype(entry);
        w->populz = 0U;
        if (w->typ == AE_IFREG) {