Detect null or non-buffer tile.

2014-11-18 12:40:44 -05:00
parent 881fa9d315
commit 9ce7d7381e
3 changed files with 9 additions and 1 deletions
--- a/lib/mbtiles.js
+++ b/lib/mbtiles.js
@@ -154,6 +154,10 @@ MBTiles.prototype.getTile = function(z, x, y, callback) {
            return callback(new Error('Tile does not exist'));
        } else if (err) {
            return callback(err);
+        } else if (!row.tile_data || !Buffer.isBuffer(row.tile_data)) {
+            var err = new Error('Tile is invalid');
+            err.code = 'EINVALIDTILE';
+            return callback(err);
        } else {
            var headers = tiletype.headers(row.tile_data);
            headers['Last-Modified'] = new Date(mbtiles._stat.mtime).toUTCString();