2016-11-03 21:17:46 +00:00
|
|
|
/*
|
|
|
|
* 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 {
|
|
|
|
|
2016-11-04 22:34:49 +00:00
|
|
|
static const nlohmann::json _EMPTY_JSON(nlohmann::json::object());
|
2016-11-03 21:17:46 +00:00
|
|
|
|
2017-03-02 00:33:34 +00:00
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
2016-11-03 21:17:46 +00:00
|
|
|
bool JSONDB::put(const std::string &n,const nlohmann::json &obj)
|
|
|
|
{
|
|
|
|
if (!_isValidObjectName(n))
|
|
|
|
return false;
|
|
|
|
|
2016-12-15 23:08:47 +00:00
|
|
|
const std::string path(_genPath(n,true));
|
2016-11-03 21:17:46 +00:00
|
|
|
if (!path.length())
|
|
|
|
return false;
|
|
|
|
|
2017-01-10 21:51:10 +00:00
|
|
|
const std::string buf(OSUtils::jsonDump(obj));
|
2016-11-03 21:17:46 +00:00
|
|
|
if (!OSUtils::writeFile(path.c_str(),buf))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
_E &e = _db[n];
|
2016-11-04 22:18:31 +00:00
|
|
|
e.obj = obj;
|
2016-11-03 21:17:46 +00:00
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
const nlohmann::json &JSONDB::get(const std::string &n,unsigned long maxSinceCheck)
|
|
|
|
{
|
|
|
|
if (!_isValidObjectName(n))
|
|
|
|
return _EMPTY_JSON;
|
|
|
|
|
|
|
|
std::map<std::string,_E>::iterator e(_db.find(n));
|
2017-03-21 13:15:49 +00:00
|
|
|
if (e != _db.end())
|
|
|
|
return e->second.obj;
|
2016-11-03 21:17:46 +00:00
|
|
|
|
2017-03-21 13:15:49 +00:00
|
|
|
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;
|
2016-11-03 21:17:46 +00:00
|
|
|
|
2017-03-21 13:15:49 +00:00
|
|
|
_E &e2 = _db[n];
|
|
|
|
try {
|
|
|
|
e2.obj = OSUtils::jsonParse(buf);
|
|
|
|
} catch ( ... ) {
|
|
|
|
e2.obj = _EMPTY_JSON;
|
|
|
|
buf = "{}";
|
2016-11-03 21:17:46 +00:00
|
|
|
}
|
2017-03-21 13:15:49 +00:00
|
|
|
|
|
|
|
return e2.obj;
|
2016-11-03 21:17:46 +00:00
|
|
|
}
|
|
|
|
|
2016-11-04 22:18:31 +00:00
|
|
|
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);
|
|
|
|
}
|
|
|
|
|
2017-03-18 01:19:51 +00:00
|
|
|
void JSONDB::_reload(const std::string &p,const std::string &b)
|
2016-11-04 22:18:31 +00:00
|
|
|
{
|
2017-03-18 01:19:51 +00:00
|
|
|
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")) {
|
2017-03-21 13:15:49 +00:00
|
|
|
this->get(b + di->substr(0,di->length() - 5));
|
2017-03-18 01:19:51 +00:00
|
|
|
} else {
|
|
|
|
this->_reload((p + ZT_PATH_SEPARATOR + *di),(b + *di + ZT_PATH_SEPARATOR));
|
2016-11-04 22:18:31 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2016-11-03 21:17:46 +00:00
|
|
|
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)
|
|
|
|
{
|
2016-11-18 23:49:28 +00:00
|
|
|
std::vector<std::string> pt(OSUtils::split(n.c_str(),"/","",""));
|
2016-11-03 21:17:46 +00:00
|
|
|
if (pt.size() == 0)
|
|
|
|
return std::string();
|
|
|
|
|
|
|
|
std::string p(_basePath);
|
|
|
|
if (create) OSUtils::mkdir(p.c_str());
|
2017-01-13 23:19:59 +00:00
|
|
|
for(unsigned long i=0,j=(unsigned long)(pt.size()-1);i<j;++i) {
|
2016-11-03 21:17:46 +00:00
|
|
|
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
|