updated smartcontracts

- updated smartcontracts
- updated fullnode database layout
- fixed memory leak in blockchain-explorer
- updated tonlib

validator/db/package.hpp

@@ -0,0 +1,40 @@
+#pragma once
+
+#include "td/actor/actor.h"
+#include "td/utils/port/FileFd.h"
+#include "td/utils/buffer.h"
+
+namespace ton {
+
+class Package {
+ public:
+  static td::Result<Package> open(std::string path, bool read_only = false, bool create = false);
+
+  Package(td::FileFd fd);
+
+  td::Status truncate(td::uint64 size);
+
+  td::uint64 append(std::string filename, td::Slice data);
+  td::uint64 size() const;
+  td::Result<std::pair<std::string, td::BufferSlice>> read(td::uint64 offset) const;
+  td::Result<td::uint64> advance(td::uint64 offset);
+
+  struct Iterator {
+    td::uint64 offset;
+    Package &package;
+
+    Iterator operator++(int);
+    const Iterator operator++(int) const;
+    td::Result<std::pair<std::string, td::BufferSlice>> read() const;
+  };
+
+  Iterator begin();
+  const Iterator begin() const;
+  Iterator end();
+  const Iterator end() const;
+
+ private:
+  td::FileFd fd_;
+};
+
+}  // namespace ton