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/*
* Module: netlink_event.hh
*
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*/
#ifndef __NETLINK_EVENT_HH__
#define __NETLINK_EVENT_HH__
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <net/if.h>
#include <string>
#include <vector>
#include <ostream>
#include <linux/rtnetlink.h>
uint32_t
apply_mask_ipv4 (const uint32_t p, const unsigned char m);
class Mac
{
public:
Mac() {}
private:
unsigned char _addr[6];
};
class IPv4
{
public:
IPv4() : _addr(-1) {}
IPv4(uint32_t addr) : _addr(addr) {}
virtual ~IPv4() {}
uint32_t
get() {return _addr;}
virtual
std::string
str()
{
in_addr addr;
addr.s_addr = _addr;
char* buf = inet_ntoa(addr);
return std::string(buf);
}
protected:
uint32_t _addr;
};
class IPv4net : protected IPv4
{
public:
IPv4net() : IPv4(-1),_mask_length(32) {}
IPv4net(uint32_t addr, char mask_len) : IPv4(addr),_mask_length(mask_len) {}
IPv4net(std::string &net) {
int pos = net.find("/");
if (pos == std::string::npos) {
pos = net.length();
_mask_length = 32;
}
else {
uint32_t m_val = strtoul(net.substr(pos+1,net.length()-1).c_str(),NULL,10);
if (m_val > 32) {
m_val = 32;
}
_mask_length = m_val;
}
uint32_t a_val = inet_addr(net.substr(0,pos).c_str());
if (a_val == INADDR_NONE) {
this->_addr = 0;
return;
}
this->_addr = apply_mask_ipv4(a_val,_mask_length);
}
uint32_t
get_addr() {return get();}
char
get_mask_length() {return _mask_length;}
bool
contains(IPv4 &addr) {
//check if addr is within specified addr range
return (apply_mask_ipv4(addr.get(),_mask_length) == _addr);
}
bool
contains(IPv4 addr) {
//check if addr is within specified addr range
return (apply_mask_ipv4(addr.get(),_mask_length) == _addr);
}
std::string
str()
{
in_addr addr;
addr.s_addr = _addr;
char *buf = inet_ntoa(addr);
std::string tmp(buf);
char buf2[80];
sprintf(buf2,"%d",_mask_length);
tmp += std::string("/") + buf2;
return tmp;
}
private:
char _mask_length;
};
/**
*
*
**/
class NetlinkEvent
{
public:
NetlinkEvent(int type,
std::string iface,
int mtu,
unsigned char *mac,
bool enabled,
bool running,
IPv4 local,
IPv4 addr,
IPv4 broadcast,
int mask_len,
int index);
NetlinkEvent() :
_type(-1),
_mtu(-1),
_enabled(false),
_running(false),
_mask_len(-1),
_index(-1) {}
~NetlinkEvent();
std::string
get_iface() const {return _iface;}
int
get_mtu() const {return _mtu;}
std::string
get_mac_str() const {
char buf[18];
sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X",
_mac[0], _mac[1], _mac[2],
_mac[3], _mac[4], _mac[5]
);
return std::string(buf);
}
int
get_type() const {return _type;}
/*
unsigned char*
get_mac() const {
return _mac;
}
*/
int
get_ifi_type() const {return _ifinfo.ifi_type;}
bool
get_enabled() const {return _enabled;}
bool
get_running() const {return _running;}
IPv4
get_local_addr() const {return _local;}
IPv4
get_addr() const {return _addr;}
IPv4
get_broadcast() const {return _broadcast;}
int
get_mask_len() const {return _mask_len;}
bool
is_link_up() const {return _enabled;}
int
get_index() const {return _index;}
bool
is_vif() const {return _vif;}
void
log();
void
set_ifinfomsg(ifinfomsg *ifinfo) {_ifinfo = *ifinfo;}
std::string
get_ifinfomsg();
private:
int _type;
std::string _iface;
bool _vif;
int _mtu;
unsigned char _mac[6];
bool _enabled;
bool _running;
IPv4 _local;
IPv4 _addr;
IPv4 _broadcast;
int _mask_len;
int _index;
//debug
struct ifinfomsg _ifinfo;
};
/**
*
*
**/
class NetlinkEventManager
{
public:
typedef std::vector<NetlinkEvent> NLEventColl;
typedef std::vector<NetlinkEvent>::iterator NLEventIter;
public: //methods
friend std::ostream & operator<< (std::ostream &, const NetlinkEvent &);
NetlinkEventManager(bool debug);
~NetlinkEventManager();
void
process(unsigned char *pkt, int size);
bool
pop(NetlinkEvent &e);
private: //methods
void
parse_msg(const struct nlmsghdr*);
private: //variables
NLEventColl _coll;
bool _debug;
};
#endif // __NETLINK_EVENT_HH__
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