128 lines
3.5 KiB
C++
128 lines
3.5 KiB
C++
// ndppd - NDP Proxy Daemon
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// Copyright (C) 2011 Daniel Adolfsson <daniel@priv.nu>
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#pragma once
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#include <string>
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#include <list>
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#include <vector>
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#include <map>
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#include <sys/poll.h>
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#include <net/ethernet.h>
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#include "ndppd.h"
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NDPPD_NS_BEGIN
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class session;
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class proxy;
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class iface {
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public:
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// Destructor.
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~iface();
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static ptr<iface> open_ifd(const std::string& name);
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static ptr<iface> open_pfd(const std::string& name, bool promiscuous);
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static int poll_all();
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static ssize_t read(int fd, struct sockaddr* saddr, uint8_t* msg, size_t size);
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static ssize_t write(int fd, const address& daddr, const uint8_t* msg, size_t size);
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// Writes a NB_NEIGHBOR_SOLICIT message to the _ifd socket.
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ssize_t write_solicit(const address& taddr);
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// Writes a NB_NEIGHBOR_ADVERT message to the _ifd socket;
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ssize_t write_advert(const address& daddr, const address& taddr, bool router);
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// Reads a NB_NEIGHBOR_SOLICIT message from the _pfd socket.
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ssize_t read_solicit(address& saddr, address& daddr, address& taddr);
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// Reads a NB_NEIGHBOR_ADVERT message from the _ifd socket;
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ssize_t read_advert(address& saddr, address& taddr);
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// Returns the name of the interface.
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const std::string& name() const;
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// Adds a session to be monitored for ND_NEIGHBOR_ADVERT messages.
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void add_session(const ptr<session>& se);
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void remove_session(const ptr<session>& se);
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void pr(const ptr<proxy>& pr);
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const ptr<proxy>& pr() const;
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private:
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static std::map<std::string, weak_ptr<iface> > _map;
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static bool _map_dirty;
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// An array of objects used with ::poll.
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static std::vector<struct pollfd> _pollfds;
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// Updates the array above.
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static void fixup_pollfds();
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static void cleanup();
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// Weak pointer so this object can reference itself.
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weak_ptr<iface> _ptr;
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// The "generic" ICMPv6 socket for reading/writing NB_NEIGHBOR_ADVERT
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// messages as well as writing NB_NEIGHBOR_SOLICIT messages.
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int _ifd;
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// This is the PF_PACKET socket we use in order to read
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// NB_NEIGHBOR_SOLICIT messages.
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int _pfd;
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// Previous state of ALLMULTI for the interface.
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int _prev_allmulti;
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// Previous state of PROMISC for the interface
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int _prev_promiscuous;
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// Name of this interface.
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std::string _name;
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// An array of sessions that are monitoring this interface for
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// ND_NEIGHBOR_ADVERT messages.
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std::list<weak_ptr<session> > _sessions;
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weak_ptr<proxy> _pr;
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// The link-layer address of this interface.
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struct ether_addr hwaddr;
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// Turns on/off ALLMULTI for this interface - returns the previous state
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// or -1 if there was an error.
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int allmulti(int state);
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// Turns on/off PROMISC for this interface - returns the previous state
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// or -1 if there was an error
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int promiscuous(int state);
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// Constructor.
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iface();
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};
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NDPPD_NS_END
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