More work on tags and capabilities.

node/Tag.cpp

@@ -0,0 +1,45 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2016  ZeroTier, Inc.  https://www.zerotier.com/
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "Tag.hpp"
+#include "RuntimeEnvironment.hpp"
+#include "Identity.hpp"
+#include "Topology.hpp"
+#include "Switch.hpp"
+
+namespace ZeroTier {
+
+int Tag::verify(const RuntimeEnvironment *RR) const
+{
+	if (!_signedBy)
+		return -1;
+	const Identity id(RR->topology->getIdentity(_signedBy));
+	if (!id) {
+		RR->sw->requestWhois(_signedBy);
+		return 1;
+	}
+	try {
+		Buffer<(sizeof(Tag) * 2)> tmp;
+		this->serialize(tmp,true);
+		return (id.verify(tmp.data(),tmp.size(),_signature) ? 0 : -1);
+	} catch ( ... ) {
+		return -1;
+	}
+}
+
+} // namespace ZeroTier