mirror of
https://github.com/deneraraujo/OpenVPNAdapter.git
synced 2026-04-24 00:00:05 +08:00
Merge commit '86cc97e55fe346502462284d2e636a2b3708163e' as 'Sources/OpenVPN3'
This commit is contained in:
@@ -0,0 +1,700 @@
|
||||
// OpenVPN -- An application to securely tunnel IP networks
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||||
// over a single port, with support for SSL/TLS-based
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// session authentication and key exchange,
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// packet encryption, packet authentication, and
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||||
// packet compression.
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||||
//
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||||
// Copyright (C) 2012-2018 OpenVPN Inc.
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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 Affero General Public License Version 3
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||||
// as published by the Free Software Foundation.
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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
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU Affero General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU Affero General Public License
|
||||
// along with this program in the COPYING file.
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// If not, see <http://www.gnu.org/licenses/>.
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#pragma once
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <net/if.h>
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#include <linux/if_tun.h>
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#include <openvpn/asio/asioerr.hpp>
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#include <openvpn/netconf/linux/gwnetlink.hpp>
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#include <openvpn/common/action.hpp>
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||||
#include <openvpn/tun/builder/setup.hpp>
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#include <openvpn/tun/client/tunbase.hpp>
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#include <openvpn/tun/linux/client/sitnl.hpp>
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#include <openvpn/tun/linux/client/tunsetup.hpp>
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||||
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||||
namespace openvpn {
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||||
namespace TunNetlink {
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||||
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||||
using namespace openvpn::TunLinuxSetup;
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||||
|
||||
struct NetlinkLinkSet : public Action
|
||||
{
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||||
typedef RCPtr<NetlinkLinkSet> Ptr;
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||||
|
||||
NetlinkLinkSet() {}
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||||
|
||||
NetlinkLinkSet(std::string dev_arg, bool up_arg, int mtu_arg)
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||||
: dev(dev_arg),
|
||||
up(up_arg),
|
||||
mtu(mtu_arg)
|
||||
{
|
||||
}
|
||||
|
||||
NetlinkLinkSet* copy() const
|
||||
{
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NetlinkLinkSet *ret = new NetlinkLinkSet;
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||||
ret->dev = dev;
|
||||
ret->up = up;
|
||||
ret->mtu = mtu;
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||||
return ret;
|
||||
}
|
||||
|
||||
virtual void execute(std::ostream& os) override
|
||||
{
|
||||
int ret;
|
||||
|
||||
if (dev.empty())
|
||||
{
|
||||
os << "Error: can't call NetlinkLinkSet with no interface" << std::endl;
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||||
return;
|
||||
}
|
||||
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||||
ret = SITNL::net_iface_mtu_set(dev, mtu);
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||||
if (ret)
|
||||
{
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os << "Error while executing NetlinkLinkSet " << dev << " mtu " << mtu
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<< ": " << ret << std::endl;
|
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}
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||||
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ret = SITNL::net_iface_up(dev, up);
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if (ret)
|
||||
{
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os << "Error while executing NetlinkLinkSet " << dev << " up " << up
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<< ": " << ret << std::endl;
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||||
}
|
||||
}
|
||||
|
||||
virtual std::string to_string() const override
|
||||
{
|
||||
std::ostringstream os;
|
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os << "netlink iface " << dev << " link set " << up << " mtu " << mtu;
|
||||
return os.str();
|
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}
|
||||
|
||||
std::string dev;
|
||||
bool up;
|
||||
int mtu;
|
||||
};
|
||||
|
||||
struct NetlinkAddr4 : public Action
|
||||
{
|
||||
typedef RCPtr<NetlinkAddr4> Ptr;
|
||||
|
||||
NetlinkAddr4() {}
|
||||
|
||||
NetlinkAddr4(std::string dev_arg, IPv4::Addr& addr_arg, int prefixlen_arg,
|
||||
IPv4::Addr& broadcast_arg, bool add_arg)
|
||||
: dev(dev_arg),
|
||||
addr(addr_arg),
|
||||
prefixlen(prefixlen_arg),
|
||||
broadcast(broadcast_arg),
|
||||
add(add_arg)
|
||||
{
|
||||
}
|
||||
|
||||
NetlinkAddr4* copy() const
|
||||
{
|
||||
NetlinkAddr4 *ret = new NetlinkAddr4;
|
||||
ret->dev = dev;
|
||||
ret->addr = addr;
|
||||
ret->prefixlen = prefixlen;
|
||||
ret->broadcast = broadcast;
|
||||
ret->add = add;
|
||||
return ret;
|
||||
}
|
||||
|
||||
virtual void execute(std::ostream& os) override
|
||||
{
|
||||
int ret;
|
||||
|
||||
if (dev.empty())
|
||||
{
|
||||
os << "Error: can't call NetlinkAddr4 with no interface" << std::endl;
|
||||
return;
|
||||
}
|
||||
|
||||
if (add)
|
||||
{
|
||||
ret = SITNL::net_addr_add(dev, addr, prefixlen, broadcast);
|
||||
}
|
||||
else
|
||||
{
|
||||
ret = SITNL::net_addr_del(dev, addr, prefixlen);
|
||||
}
|
||||
|
||||
if (ret)
|
||||
{
|
||||
os << "Error while executing NetlinkAddr4(add: " << add << ") "
|
||||
<< dev << ": " << ret << std::endl;
|
||||
}
|
||||
}
|
||||
|
||||
virtual std::string to_string() const override
|
||||
{
|
||||
std::ostringstream os;
|
||||
os << "netlink iface " << dev << " " << (add ? "add" : "del") << " "
|
||||
<< addr.to_string() << "/" << prefixlen << " broadcast "
|
||||
<< broadcast.to_string();
|
||||
return os.str();
|
||||
}
|
||||
|
||||
std::string dev;
|
||||
IPv4::Addr addr;
|
||||
int prefixlen;
|
||||
IPv4::Addr broadcast;
|
||||
bool add;
|
||||
};
|
||||
|
||||
struct NetlinkAddr6 : public Action
|
||||
{
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||||
typedef RCPtr<NetlinkAddr6> Ptr;
|
||||
|
||||
NetlinkAddr6() {}
|
||||
|
||||
NetlinkAddr6(std::string dev_arg, IPv6::Addr& addr_arg, int prefixlen_arg,
|
||||
bool add_arg)
|
||||
: dev(dev_arg),
|
||||
addr(addr_arg),
|
||||
prefixlen(prefixlen_arg),
|
||||
add(add_arg)
|
||||
{
|
||||
}
|
||||
|
||||
NetlinkAddr6* copy() const
|
||||
{
|
||||
NetlinkAddr6 *ret = new NetlinkAddr6;
|
||||
ret->dev = dev;
|
||||
ret->addr = addr;
|
||||
ret->prefixlen = prefixlen;
|
||||
ret->add = add;
|
||||
return ret;
|
||||
}
|
||||
|
||||
virtual void execute(std::ostream& os) override
|
||||
{
|
||||
int ret;
|
||||
|
||||
if (dev.empty())
|
||||
{
|
||||
os << "Error: can't call NetlinkAddr6 with no interface" << std::endl;
|
||||
return;
|
||||
}
|
||||
|
||||
if (add)
|
||||
{
|
||||
ret = SITNL::net_addr_add(dev, addr, prefixlen);
|
||||
}
|
||||
else
|
||||
{
|
||||
ret = SITNL::net_addr_del(dev, addr, prefixlen);
|
||||
}
|
||||
|
||||
if (ret)
|
||||
{
|
||||
os << "Error while executing NetlinkAddr6(add: " << add << ") "
|
||||
<< dev << ": " << ret << std::endl;
|
||||
}
|
||||
}
|
||||
|
||||
virtual std::string to_string() const override
|
||||
{
|
||||
std::ostringstream os;
|
||||
os << "netlink iface " << dev << " " << (add ? "add" : "del") << " "
|
||||
<< addr.to_string() << "/" << prefixlen;
|
||||
return os.str();
|
||||
}
|
||||
|
||||
std::string dev;
|
||||
IPv6::Addr addr;
|
||||
int prefixlen;
|
||||
bool add;
|
||||
};
|
||||
|
||||
struct NetlinkAddr4PtP : public Action
|
||||
{
|
||||
typedef RCPtr<NetlinkAddr4PtP> Ptr;
|
||||
|
||||
NetlinkAddr4PtP() {}
|
||||
|
||||
NetlinkAddr4PtP(std::string dev_arg, IPv4::Addr local_arg,
|
||||
IPv4::Addr remote_arg, bool add_arg)
|
||||
: dev(dev_arg),
|
||||
local(local_arg),
|
||||
remote(remote_arg),
|
||||
add(add_arg)
|
||||
{
|
||||
}
|
||||
|
||||
NetlinkAddr4PtP* copy() const
|
||||
{
|
||||
NetlinkAddr4PtP *ret = new NetlinkAddr4PtP;
|
||||
ret->dev = dev;
|
||||
ret->local = local;
|
||||
ret->remote = remote;
|
||||
ret->add = add;
|
||||
return ret;
|
||||
}
|
||||
|
||||
virtual void execute(std::ostream& os) override
|
||||
{
|
||||
int ret;
|
||||
|
||||
if (dev.empty())
|
||||
{
|
||||
os << "Error: can't call NetlinkAddr4PtP with no interface" << std::endl;
|
||||
return;
|
||||
}
|
||||
|
||||
if (add)
|
||||
{
|
||||
ret = SITNL::net_addr_ptp_add(dev, local, remote);
|
||||
}
|
||||
else
|
||||
{
|
||||
ret = SITNL::net_addr_ptp_del(dev, local, remote);
|
||||
}
|
||||
|
||||
if (ret)
|
||||
{
|
||||
os << "Error while executing NetlinkAddr4PtP(add: " << add << ") "
|
||||
<< dev << ": " << ret << std::endl;
|
||||
}
|
||||
}
|
||||
|
||||
virtual std::string to_string() const override
|
||||
{
|
||||
return "netlink iface " + dev + " " + (add ? "add" : "del") + " ptp "
|
||||
+ local.to_string() + " remote " + remote.to_string();
|
||||
}
|
||||
|
||||
std::string dev;
|
||||
IPv4::Addr local;
|
||||
IPv4::Addr remote;
|
||||
bool add;
|
||||
};
|
||||
|
||||
struct NetlinkRoute4 : public Action
|
||||
{
|
||||
typedef RCPtr<NetlinkRoute4> Ptr;
|
||||
|
||||
NetlinkRoute4() {}
|
||||
|
||||
NetlinkRoute4(IPv4::Addr& dst_arg, int prefixlen_arg, IPv4::Addr& gw_arg,
|
||||
std::string dev_arg, bool add_arg)
|
||||
: route(dst_arg, prefixlen_arg),
|
||||
gw(gw_arg),
|
||||
dev(dev_arg),
|
||||
add(add_arg)
|
||||
{
|
||||
}
|
||||
|
||||
NetlinkRoute4* copy() const
|
||||
{
|
||||
NetlinkRoute4 *ret = new NetlinkRoute4;
|
||||
ret->route = route;
|
||||
ret->gw = gw;
|
||||
ret->dev = dev;
|
||||
return ret;
|
||||
}
|
||||
|
||||
virtual void execute(std::ostream& os) override
|
||||
{
|
||||
int ret;
|
||||
|
||||
if (dev.empty())
|
||||
{
|
||||
os << "Error: can't call NetlinkRoute4 with no interface" << std::endl;
|
||||
return;
|
||||
}
|
||||
|
||||
if (add)
|
||||
{
|
||||
ret = SITNL::net_route_add(route, gw, dev, 0, 0);
|
||||
}
|
||||
else
|
||||
{
|
||||
ret = SITNL::net_route_del(route, gw, dev, 0, 0);
|
||||
}
|
||||
|
||||
if (ret)
|
||||
{
|
||||
os << "Error while executing NetlinkRoute4(add: " << add << ") "
|
||||
<< dev << ": " << ret << std::endl;
|
||||
}
|
||||
}
|
||||
|
||||
virtual std::string to_string() const override
|
||||
{
|
||||
std::ostringstream os;
|
||||
os << "netlink route " << (add ? "add" : "del") << " dev " << dev << " "
|
||||
<< route << " via " << gw.to_string();
|
||||
return os.str();
|
||||
}
|
||||
|
||||
IP::Route4 route;
|
||||
IPv4::Addr gw;
|
||||
std::string dev;
|
||||
bool add;
|
||||
};
|
||||
|
||||
struct NetlinkRoute6 : public Action
|
||||
{
|
||||
typedef RCPtr<NetlinkRoute6> Ptr;
|
||||
|
||||
NetlinkRoute6() {}
|
||||
|
||||
NetlinkRoute6(IPv6::Addr& dst_arg, int prefixlen_arg, IPv6::Addr& gw_arg,
|
||||
std::string dev_arg, bool add_arg)
|
||||
: route(dst_arg, prefixlen_arg),
|
||||
gw(gw_arg),
|
||||
dev(dev_arg),
|
||||
add(add_arg)
|
||||
{
|
||||
}
|
||||
|
||||
NetlinkRoute6* copy() const
|
||||
{
|
||||
NetlinkRoute6 *ret = new NetlinkRoute6;
|
||||
ret->route = route;
|
||||
ret->gw = gw;
|
||||
ret->dev = dev;
|
||||
return ret;
|
||||
}
|
||||
|
||||
virtual void execute(std::ostream& os) override
|
||||
{
|
||||
int ret;
|
||||
|
||||
if (dev.empty())
|
||||
{
|
||||
os << "Error: can't call NetlinkRoute6 with no interface" << std::endl;
|
||||
return;
|
||||
}
|
||||
|
||||
if (add)
|
||||
{
|
||||
ret = SITNL::net_route_add(route, gw, dev, 0, 0);
|
||||
}
|
||||
else
|
||||
{
|
||||
ret = SITNL::net_route_del(route, gw, dev, 0, 0);
|
||||
}
|
||||
|
||||
if (ret)
|
||||
{
|
||||
os << "Error while executing NetlinkRoute6(add: " << add << ") "
|
||||
<< dev << ": " << ret << std::endl;
|
||||
}
|
||||
}
|
||||
|
||||
virtual std::string to_string() const override
|
||||
{
|
||||
std::ostringstream os;
|
||||
os << "netlink route " << (add ? "add" : "del") << " dev " << dev << " "
|
||||
<< route << " via " << gw.to_string();
|
||||
return os.str();
|
||||
}
|
||||
|
||||
IP::Route6 route;
|
||||
IPv6::Addr gw;
|
||||
std::string dev;
|
||||
bool add;
|
||||
};
|
||||
|
||||
enum { // add_del_route flags
|
||||
R_IPv6=(1<<0),
|
||||
R_ADD_SYS=(1<<1),
|
||||
R_ADD_DCO=(1<<2),
|
||||
R_ADD_ALL=R_ADD_SYS|R_ADD_DCO,
|
||||
};
|
||||
|
||||
/*inline IPv4::Addr cvt_pnr_ip_v4(const std::string& hexaddr)
|
||||
{
|
||||
BufferAllocated v(4, BufferAllocated::CONSTRUCT_ZERO);
|
||||
parse_hex(v, hexaddr);
|
||||
if (v.size() != 4)
|
||||
throw tun_linux_error("bad hex address");
|
||||
IPv4::Addr ret = IPv4::Addr::from_bytes(v.data());
|
||||
return IP::Addr::from_ipv4(ret);
|
||||
}*/
|
||||
|
||||
inline void add_del_route(const std::string& addr_str,
|
||||
const int prefix_len,
|
||||
const std::string& gateway_str,
|
||||
const std::string& dev,
|
||||
const unsigned int flags,
|
||||
std::vector<IP::Route>* rtvec,
|
||||
Action::Ptr& create,
|
||||
Action::Ptr& destroy)
|
||||
{
|
||||
if (flags & R_IPv6)
|
||||
{
|
||||
const IPv6::Addr addr = IPv6::Addr::from_string(addr_str);
|
||||
const IPv6::Addr netmask = IPv6::Addr::netmask_from_prefix_len(prefix_len);
|
||||
const IPv6::Addr net = addr & netmask;
|
||||
|
||||
if (flags & R_ADD_SYS)
|
||||
{
|
||||
// ip route add 2001:db8:1::/48 via 2001:db8:1::1
|
||||
NetlinkRoute6::Ptr add(new NetlinkRoute6);
|
||||
add->route.addr = net;
|
||||
add->route.prefix_len = prefix_len;
|
||||
add->gw = IPv6::Addr::from_string(gateway_str);
|
||||
add->dev = dev;
|
||||
add->add = true;
|
||||
|
||||
create = add;
|
||||
// for the destroy command, copy the add command but replace "add" with "delete"
|
||||
NetlinkRoute6::Ptr del(add->copy());
|
||||
del->add = false;
|
||||
destroy = del;
|
||||
}
|
||||
|
||||
if (rtvec && (flags & R_ADD_DCO))
|
||||
rtvec->emplace_back(IP::Addr::from_ipv6(net), prefix_len);
|
||||
}
|
||||
else
|
||||
{
|
||||
const IPv4::Addr addr = IPv4::Addr::from_string(addr_str);
|
||||
const IPv4::Addr netmask = IPv4::Addr::netmask_from_prefix_len(prefix_len);
|
||||
const IPv4::Addr net = addr & netmask;
|
||||
|
||||
if (flags & R_ADD_SYS)
|
||||
{
|
||||
// ip route add 192.0.2.128/25 via 192.0.2.1
|
||||
NetlinkRoute4::Ptr add(new NetlinkRoute4);
|
||||
add->route.addr = net;
|
||||
add->route.prefix_len = prefix_len;
|
||||
add->gw = IPv4::Addr::from_string(gateway_str);
|
||||
add->dev = dev;
|
||||
add->add = true;
|
||||
|
||||
create = add;
|
||||
// for the destroy command, copy the add command but replace "add" with "delete"
|
||||
NetlinkRoute4::Ptr del(add->copy());
|
||||
del->add = false;
|
||||
destroy = del;
|
||||
}
|
||||
|
||||
if (rtvec && (flags & R_ADD_DCO))
|
||||
rtvec->emplace_back(IP::Addr::from_ipv4(net), prefix_len);
|
||||
}
|
||||
}
|
||||
|
||||
inline void add_del_route(const std::string& addr_str,
|
||||
const int prefix_len,
|
||||
const std::string& gateway_str,
|
||||
const std::string& dev,
|
||||
const unsigned int flags,// add interface route to rtvec if defined
|
||||
std::vector<IP::Route>* rtvec,
|
||||
ActionList& create,
|
||||
ActionList& destroy)
|
||||
{
|
||||
Action::Ptr c, d;
|
||||
add_del_route(addr_str, prefix_len, gateway_str, dev, flags, rtvec, c, d);
|
||||
create.add(c);
|
||||
destroy.add(d);
|
||||
}
|
||||
|
||||
inline void iface_up(const std::string& iface_name,
|
||||
const int mtu,
|
||||
ActionList& create,
|
||||
ActionList& destroy)
|
||||
{
|
||||
{
|
||||
NetlinkLinkSet::Ptr add(new NetlinkLinkSet);
|
||||
add->dev = iface_name;
|
||||
add->up = true;
|
||||
add->mtu = mtu;
|
||||
|
||||
create.add(add);
|
||||
// for the destroy command, copy the add command but replace "up" with "down"
|
||||
NetlinkLinkSet::Ptr del(add->copy());
|
||||
del->up = false;
|
||||
destroy.add(del);
|
||||
}
|
||||
}
|
||||
|
||||
inline void iface_config(const std::string& iface_name,
|
||||
int unit,
|
||||
const TunBuilderCapture& pull,
|
||||
std::vector<IP::Route>* rtvec,
|
||||
ActionList& create,
|
||||
ActionList& destroy)
|
||||
{
|
||||
// set local4 and local6 to point to IPv4/6 route configurations
|
||||
const TunBuilderCapture::RouteAddress* local4 = pull.vpn_ipv4();
|
||||
const TunBuilderCapture::RouteAddress* local6 = pull.vpn_ipv6();
|
||||
|
||||
// Set IPv4 Interface
|
||||
if (local4)
|
||||
{
|
||||
NetlinkAddr4::Ptr add(new NetlinkAddr4);
|
||||
add->addr = IPv4::Addr::from_string(local4->address);
|
||||
add->prefixlen = local4->prefix_length;
|
||||
add->broadcast = IPv4::Addr::from_string(local4->address)
|
||||
| ~IPv4::Addr::netmask_from_prefix_len(local4->prefix_length);
|
||||
add->dev = iface_name;
|
||||
add->add = true;
|
||||
// if (unit >= 0)
|
||||
// {
|
||||
// add->argv.push_back("label");
|
||||
// add->argv.push_back(iface_name + ':' + openvpn::to_string(unit));
|
||||
// }
|
||||
create.add(add);
|
||||
|
||||
// for the destroy command, copy the add command but replace "add" with "delete"
|
||||
NetlinkAddr4::Ptr del(add->copy());
|
||||
del->add = false;
|
||||
destroy.add(del);
|
||||
|
||||
// add interface route to rtvec if defined
|
||||
add_del_route(local4->address, local4->prefix_length, local4->address, iface_name, R_ADD_DCO, rtvec, create, destroy);
|
||||
}
|
||||
|
||||
// Set IPv6 Interface
|
||||
if (local6 && !pull.block_ipv6)
|
||||
{
|
||||
NetlinkAddr6::Ptr add(new NetlinkAddr6);
|
||||
add->addr = IPv6::Addr::from_string(local6->address);
|
||||
add->prefixlen = local6->prefix_length;
|
||||
add->dev = iface_name;
|
||||
add->add = true;
|
||||
|
||||
create.add(add);
|
||||
|
||||
// for the destroy command, copy the add command but replace "add" with "delete"
|
||||
NetlinkAddr6::Ptr del(add->copy());
|
||||
del->add = false;
|
||||
destroy.add(del);
|
||||
|
||||
// add interface route to rtvec if defined
|
||||
add_del_route(local6->address, local6->prefix_length, local6->address, iface_name, R_ADD_DCO|R_IPv6, rtvec, create, destroy);
|
||||
}
|
||||
}
|
||||
|
||||
struct TunMethods
|
||||
{
|
||||
static inline void tun_config(const std::string& iface_name,
|
||||
const TunBuilderCapture& pull,
|
||||
std::vector<IP::Route>* rtvec,
|
||||
ActionList& create,
|
||||
ActionList& destroy,
|
||||
bool add_bypass_routes)
|
||||
{
|
||||
// set local4 and local6 to point to IPv4/6 route configurations
|
||||
const TunBuilderCapture::RouteAddress* local4 = pull.vpn_ipv4();
|
||||
const TunBuilderCapture::RouteAddress* local6 = pull.vpn_ipv6();
|
||||
|
||||
// configure interface
|
||||
iface_up(iface_name, pull.mtu, create, destroy);
|
||||
iface_config(iface_name, -1, pull, rtvec, create, destroy);
|
||||
|
||||
// Process Routes
|
||||
{
|
||||
for (const auto &route : pull.add_routes)
|
||||
{
|
||||
if (route.ipv6)
|
||||
{
|
||||
if (!pull.block_ipv6)
|
||||
add_del_route(route.address, route.prefix_length, local6->gateway, iface_name, R_ADD_ALL|R_IPv6, rtvec, create, destroy);
|
||||
}
|
||||
else
|
||||
{
|
||||
if (local4 && !local4->gateway.empty())
|
||||
add_del_route(route.address, route.prefix_length, local4->gateway, iface_name, R_ADD_ALL, rtvec, create, destroy);
|
||||
else
|
||||
OPENVPN_LOG("ERROR: IPv4 route pushed without IPv4 ifconfig and/or route-gateway");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Process exclude routes
|
||||
if (!pull.exclude_routes.empty())
|
||||
{
|
||||
LinuxGW46Netlink gw(iface_name);
|
||||
|
||||
for (const auto &route : pull.exclude_routes)
|
||||
{
|
||||
if (route.ipv6)
|
||||
{
|
||||
OPENVPN_LOG("NOTE: exclude IPv6 routes not supported yet"); // fixme
|
||||
}
|
||||
else
|
||||
{
|
||||
if (gw.v4.defined())
|
||||
add_del_route(route.address, route.prefix_length, gw.v4.addr().to_string(), gw.v4.dev(), R_ADD_SYS, rtvec, create, destroy);
|
||||
else
|
||||
OPENVPN_LOG("NOTE: cannot determine gateway for exclude IPv4 routes");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Process IPv4 redirect-gateway
|
||||
if (pull.reroute_gw.ipv4)
|
||||
{
|
||||
// add bypass route
|
||||
if (add_bypass_routes && !pull.remote_address.ipv6 && !(pull.reroute_gw.flags & RedirectGatewayFlags::RG_LOCAL))
|
||||
add_bypass_route(iface_name, pull.remote_address.address, false, rtvec, create, destroy);
|
||||
|
||||
add_del_route("0.0.0.0", 1, local4->gateway, iface_name, R_ADD_ALL, rtvec, create, destroy);
|
||||
add_del_route("128.0.0.0", 1, local4->gateway, iface_name, R_ADD_ALL, rtvec, create, destroy);
|
||||
}
|
||||
|
||||
// Process IPv6 redirect-gateway
|
||||
if (pull.reroute_gw.ipv6 && !pull.block_ipv6)
|
||||
{
|
||||
// add bypass route
|
||||
if (add_bypass_routes && pull.remote_address.ipv6 && !(pull.reroute_gw.flags & RedirectGatewayFlags::RG_LOCAL))
|
||||
add_bypass_route(iface_name, pull.remote_address.address, true, rtvec, create, destroy);
|
||||
|
||||
add_del_route("0000::", 1, local6->gateway, iface_name, R_ADD_ALL|R_IPv6, rtvec, create, destroy);
|
||||
add_del_route("8000::", 1, local6->gateway, iface_name, R_ADD_ALL|R_IPv6, rtvec, create, destroy);
|
||||
}
|
||||
|
||||
// fixme -- Process block-ipv6
|
||||
|
||||
// fixme -- Handle pushed DNS servers
|
||||
}
|
||||
|
||||
static inline void add_bypass_route(const std::string& tun_iface_name,
|
||||
const std::string& address,
|
||||
bool ipv6,
|
||||
std::vector<IP::Route>* rtvec,
|
||||
ActionList& create,
|
||||
ActionList& destroy)
|
||||
{
|
||||
LinuxGW46Netlink gw(tun_iface_name, address);
|
||||
|
||||
if (!ipv6 && gw.v4.defined())
|
||||
add_del_route(address, 32, gw.v4.addr().to_string(), gw.dev(), R_ADD_SYS, rtvec, create, destroy);
|
||||
|
||||
if (ipv6 && gw.v6.defined())
|
||||
add_del_route(address, 128, gw.v6.addr().to_string(), gw.dev(), R_ADD_SYS, rtvec, create, destroy);
|
||||
}
|
||||
};
|
||||
}
|
||||
} // namespace openvpn
|
||||
Reference in New Issue
Block a user