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https://github.com/oxen-io/lokinet.git
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105 lines
2.3 KiB
C++
105 lines
2.3 KiB
C++
#pragma once
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#include "common.hpp"
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#include "platform.hpp"
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#include <llarp.hpp>
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#include <unistd.h>
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#include <cstdio>
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namespace llarp::vpn
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{
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class AndroidInterface : public NetworkInterface
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{
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const int m_fd;
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public:
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AndroidInterface(InterfaceInfo info, int fd) : NetworkInterface{std::move(info)}, m_fd{fd}
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{
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if (m_fd == -1)
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throw std::runtime_error(
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"Error opening AndroidVPN layer FD: " + std::string{strerror(errno)});
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}
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virtual ~AndroidInterface()
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{
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if (m_fd != -1)
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::close(m_fd);
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}
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int
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PollFD() const override
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{
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return m_fd;
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}
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net::IPPacket
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ReadNextPacket() override
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{
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std::vector<byte_t> pkt;
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pkt.reserve(net::IPPacket::MaxSize);
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const auto n = read(m_fd, pkt.data(), pkt.capacity());
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pkt.resize(std::min(std::max(ssize_t{}, n), static_cast<ssize_t>(pkt.capacity())));
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return net::IPPacket{std::move(pkt)};
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}
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bool
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WritePacket(net::IPPacket pkt) override
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{
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const auto sz = write(m_fd, pkt.data(), pkt.size());
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if (sz <= 0)
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return false;
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return sz == static_cast<ssize_t>(pkt.size());
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}
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};
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class AndroidRouteManager : public AbstractRouteManager
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{
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void add_route(oxen::quic::Address, oxen::quic::Address) override{};
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void delete_route(oxen::quic::Address, oxen::quic::Address) override{};
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void
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add_default_route_via_interface(NetworkInterface&) override{};
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void
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delete_default_route_via_interface(NetworkInterface&) override{};
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void
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add_route_via_interface(NetworkInterface&, IPRange) override{};
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void
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delete_route_via_interface(NetworkInterface&, IPRange) override{};
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std::vector<oxen::quic::Address>
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get_non_interface_gateways(NetworkInterface&) override
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{
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return std::vector<oxen::quic::Address>{};
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};
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};
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class AndroidPlatform : public Platform
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{
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const int fd;
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AndroidRouteManager _route_manager{};
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public:
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AndroidPlatform(llarp::Context* ctx) : fd{ctx->androidFD}
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{}
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std::shared_ptr<NetworkInterface>
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ObtainInterface(InterfaceInfo info, Router*) override
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{
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return std::make_shared<AndroidInterface>(std::move(info), fd);
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}
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AbstractRouteManager&
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RouteManager() override
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{
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return _route_manager;
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}
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};
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} // namespace llarp::vpn
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