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#ifndef ZT_MANAGEDROUTE_HPP
#define ZT_MANAGEDROUTE_HPP
#include <stdlib.h>
#include <string.h>
#include "../node/InetAddress.hpp"
#include "../node/Utils.hpp"
#include <stdexcept>
#include <vector>
namespace ZeroTier {
/**
* A ZT-managed route that used C++ RAII semantics to automatically clean itself up on deallocate
*/
class ManagedRoute
{
public:
ManagedRoute()
{
_device[0] = (char)0;
_systemDevice[0] = (char)0;
_applied = false;
}
~ManagedRoute()
{
this->remove();
}
ManagedRoute(const ManagedRoute &r)
{
_applied = false;
*this = r;
}
inline ManagedRoute &operator=(const ManagedRoute &r)
{
if ((!_applied)&&(!r._applied)) {
memcpy(this,&r,sizeof(ManagedRoute)); // InetAddress is memcpy'able
} else {
fprintf(stderr,"Applied ManagedRoute isn't copyable!\n");
abort();
}
return *this;
}
/**
* Initialize object and set route
*
* @param target Route target (e.g. 0.0.0.0/0 for default)
* @param via Route next L3 hop or NULL InetAddress if local
* @param device Device name/ID if 'via' is null and route is local, otherwise ignored
* @return True if route was successfully set
*/
inline bool set(const InetAddress &target,const InetAddress &via,const char *device)
{
if ((!_via)&&(!_device[0]))
return false;
this->remove();
_target = target;
_via = via;
Utils::scopy(_device,sizeof(_device),device);
return this->sync();
}
/**
* Set or update currently set route
*
* This must be called periodically for routes that shadow others so that
* shadow routes can be updated. In some cases it has no effect
*
* @return True if route add/update was successful
*/
bool sync();
/**
* Remove and clear this ManagedRoute
*
* This does nothing if this ManagedRoute is not set or has already been
* removed. If this is not explicitly called it is called automatically on
* destruct.
*/
void remove();
inline const InetAddress &target() const { return _target; }
inline const InetAddress &via() const { return _via; }
inline const char *device() const { return _device; }
private:
InetAddress _target;
InetAddress _via;
InetAddress _systemVia; // for route overrides
char _device[128];
char _systemDevice[128]; // for route overrides
bool _applied;
};
} // namespace ZeroTier
#endif
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