Add archive integrity checks. (Thanks, AFL\!)

1 files changed, 4 insertions, 0 deletions

diff --git a/src/main.c b/src/main.c
index d50ee4c..90fbb2f 100644
--- a/src/main.c
+++ b/src/main.c
@@ -156,6 +156,10 @@ static void map_entries(char *path, struct params p) {
         return;
     }
 
+    if (h->table_offset > archive->len) {
+        fprintf(stderr, "Invalid table offset. Archive corrupt.\n");
+        return;
+    }
     stream_seek(archive, h->table_offset, SEEK_SET);
 
     struct stream *table = load_table(archive);