dynamic loading of network stack no longer needed1.0.0

1 files changed, 147 insertions, 0 deletions

diff --git a/zto/controller/JSONDB.cpp b/zto/controller/JSONDB.cpp
new file mode 100644
index 0000000..8b6de9b
--- /dev/null
+++ b/zto/controller/JSONDB.cpp
@@ -0,0 +1,147 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2015  ZeroTier, Inc.
+ *
+ * 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 "JSONDB.hpp"
+
+namespace ZeroTier {
+
+static const nlohmann::json _EMPTY_JSON(nlohmann::json::object());
+
+bool JSONDB::writeRaw(const std::string &n,const std::string &obj)
+{
+	if (!_isValidObjectName(n))
+		return false;
+
+	const std::string path(_genPath(n,true));
+	if (!path.length())
+		return false;
+
+	const std::string buf(obj);
+	if (!OSUtils::writeFile(path.c_str(),buf))
+		return false;
+
+	return true;
+}
+
+bool JSONDB::put(const std::string &n,const nlohmann::json &obj)
+{
+	if (!_isValidObjectName(n))
+		return false;
+
+	const std::string path(_genPath(n,true));
+	if (!path.length())
+		return false;
+
+	const std::string buf(OSUtils::jsonDump(obj));
+	if (!OSUtils::writeFile(path.c_str(),buf))
+		return false;
+
+	_E &e = _db[n];
+	e.obj = obj;
+
+	return true;
+}
+
+const nlohmann::json &JSONDB::get(const std::string &n)
+{
+	if (!_isValidObjectName(n))
+		return _EMPTY_JSON;
+
+	std::map<std::string,_E>::iterator e(_db.find(n));
+	if (e != _db.end())
+		return e->second.obj;
+
+	const std::string path(_genPath(n,false));
+	if (!path.length())
+		return _EMPTY_JSON;
+	std::string buf;
+	if (!OSUtils::readFile(path.c_str(),buf))
+		return _EMPTY_JSON;
+
+	_E &e2 = _db[n];
+	try {
+		e2.obj = OSUtils::jsonParse(buf);
+	} catch ( ... ) {
+		e2.obj = _EMPTY_JSON;
+		buf = "{}";
+	}
+
+	return e2.obj;
+}
+
+void JSONDB::erase(const std::string &n)
+{
+	if (!_isValidObjectName(n))
+		return;
+
+	std::string path(_genPath(n,true));
+	if (!path.length())
+		return;
+
+	OSUtils::rm(path.c_str());
+	_db.erase(n);
+}
+
+void JSONDB::_reload(const std::string &p,const std::string &b)
+{
+	std::vector<std::string> dl(OSUtils::listDirectory(p.c_str()));
+	for(std::vector<std::string>::const_iterator di(dl.begin());di!=dl.end();++di) {
+		if ((di->length() > 5)&&(di->substr(di->length() - 5) == ".json")) {
+			this->get(b + di->substr(0,di->length() - 5));
+		} else {
+			this->_reload((p + ZT_PATH_SEPARATOR + *di),(b + *di + ZT_PATH_SEPARATOR));
+		}
+	}
+}
+
+bool JSONDB::_isValidObjectName(const std::string &n)
+{
+	if (n.length() == 0)
+		return false;
+	const char *p = n.c_str();
+	char c;
+	// For security reasons we should not allow dots, backslashes, or other path characters or potential path characters.
+	while ((c = *(p++))) {
+		if (!( ((c >= 'a')&&(c <= 'z')) || ((c >= 'A')&&(c <= 'Z')) || ((c >= '0')&&(c <= '9')) || (c == '/') || (c == '_') || (c == '~') || (c == '-') ))
+			return false;
+	}
+	return true;
+}
+
+std::string JSONDB::_genPath(const std::string &n,bool create)
+{
+	std::vector<std::string> pt(OSUtils::split(n.c_str(),"/","",""));
+	if (pt.size() == 0)
+		return std::string();
+
+	std::string p(_basePath);
+	if (create) OSUtils::mkdir(p.c_str());
+	for(unsigned long i=0,j=(unsigned long)(pt.size()-1);i<j;++i) {
+		p.push_back(ZT_PATH_SEPARATOR);
+		p.append(pt[i]);
+		if (create) OSUtils::mkdir(p.c_str());
+	}
+
+	p.push_back(ZT_PATH_SEPARATOR);
+	p.append(pt[pt.size()-1]);
+	p.append(".json");
+
+	return p;
+}
+
+} // namespace ZeroTier