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85 lines
1.6 KiB
C++
85 lines
1.6 KiB
C++
#pragma once
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#include <stdio.h>
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#include <unistd.h>
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#include <ev/vpn.hpp>
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#include <vpn/common.hpp>
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#include <llarp.hpp>
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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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const InterfaceInfo m_Info; // likely 100% ignored on android, at least for now
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public:
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AndroidInterface(InterfaceInfo info, int fd) : m_fd(fd), m_Info(info)
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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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net::IPPacket pkt;
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const auto sz = read(m_fd, pkt.buf, sizeof(pkt.buf));
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if (sz >= 0)
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pkt.sz = std::min(sz, ssize_t{sizeof(pkt.buf)});
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return 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.buf, pkt.sz);
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if (sz <= 0)
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return false;
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return sz == static_cast<ssize_t>(pkt.sz);
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}
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bool
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HasNextPacket() override
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{
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return false;
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}
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std::string
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IfName() const override
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{
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return m_Info.ifname;
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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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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) 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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};
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} // namespace llarp::vpn
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