125 lines
2.9 KiB
C++
125 lines
2.9 KiB
C++
// SPDX-License-Identifier: AGPL-1.0-only
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// Copyright (C) 2018 Ludvig Strigeus <info@tunsafe.com>. All Rights Reserved.
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#ifndef TINYVPN_NETAPI_H_
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#define TINYVPN_NETAPI_H_
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#include "tunsafe_types.h"
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#include "tunsafe_ipaddr.h"
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#include <vector>
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#include <string>
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#if !defined(OS_WIN)
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#include <sys/types.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <sys/socket.h>
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#endif
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#pragma warning (disable: 4200)
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struct Packet {
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union {
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Packet *next;
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#if defined(OS_WIN)
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SLIST_ENTRY list_entry;
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#endif
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};
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unsigned int post_target, size;
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byte *data;
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#if defined(OS_WIN)
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OVERLAPPED overlapped; // For Windows overlapped IO
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#endif
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IpAddr addr; // Optionally set to target/source of the packet
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int sin_size;
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byte data_pre[4];
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byte data_buf[0];
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enum {
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// there's always this much data before data_ptr
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HEADROOM_BEFORE = 64,
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};
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};
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enum {
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kPacketAllocSize = 2048 - 16,
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kPacketCapacity = kPacketAllocSize - sizeof(Packet) - Packet::HEADROOM_BEFORE,
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};
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void FreePacket(Packet *packet);
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void FreePackets(Packet *packet, Packet **end, int count);
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Packet *AllocPacket();
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void FreeAllPackets();
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class TunInterface {
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public:
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struct PrePostCommands {
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std::vector<std::string> pre_up;
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std::vector<std::string> post_up;
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std::vector<std::string> pre_down;
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std::vector<std::string> post_down;
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};
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struct TunConfig {
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// IP address and netmask of the tun device
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in_addr_t ip;
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uint8 cidr;
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bool block_dns_on_adapters;
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// no, yes(firewall), yes(route), yes(both), 255(default)
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uint8 internet_blocking;
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// Set this to configure a default route for ipv4
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bool use_ipv4_default_route;
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// Set this to configure a default route for ipv6
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bool use_ipv6_default_route;
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// This holds the address of the vpn endpoint, so those get routed to the old iface.
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uint32 default_route_endpoint_v4;
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// Set mtu
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int mtu;
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// Set ipv6 address?
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uint8 ipv6_address[16];
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uint8 ipv6_cidr;
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// Set this to configure DNS server for ipv4,ipv6
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std::vector<IpAddr> ipv4_dns;
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std::vector<IpAddr> ipv6_dns;
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// This holds the address of the vpn endpoint, so those get routed to the old iface.
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uint8 default_route_endpoint_v6[16];
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// This holds all cidr addresses to add as additional routing entries
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std::vector<WgCidrAddr> extra_routes;
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// This holds all the ips to exclude
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std::vector<WgCidrAddr> excluded_ips;
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// This holds the pre/post commands
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PrePostCommands pre_post_commands;
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};
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struct TunConfigOut {
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bool enable_neighbor_discovery_spoofing;
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uint8 neighbor_discovery_spoofing_mac[6];
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};
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virtual bool Configure(const TunConfig &&config, TunConfigOut *out) = 0;
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virtual void WriteTunPacket(Packet *packet) = 0;
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};
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class UdpInterface {
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public:
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virtual bool Configure(int listen_port) = 0;
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virtual void WriteUdpPacket(Packet *packet) = 0;
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};
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extern bool g_allow_pre_post;
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#endif // TINYVPN_NETAPI_H_
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