mirror of https://github.com/slackhq/nebula.git
72 lines
1.5 KiB
Go
72 lines
1.5 KiB
Go
//go:build !e2e_testing
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// +build !e2e_testing
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package overlay
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import (
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"fmt"
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"io"
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"net"
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"os"
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"github.com/sirupsen/logrus"
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"github.com/slackhq/nebula/cidr"
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"github.com/slackhq/nebula/iputil"
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)
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type tun struct {
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io.ReadWriteCloser
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fd int
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cidr *net.IPNet
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routeTree *cidr.Tree4
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l *logrus.Logger
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}
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func newTunFromFd(l *logrus.Logger, deviceFd int, cidr *net.IPNet, _ int, routes []Route, _ int, _ bool) (*tun, error) {
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routeTree, err := makeRouteTree(l, routes, false)
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if err != nil {
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return nil, err
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}
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// XXX Android returns an fd in non-blocking mode which is necessary for shutdown to work properly.
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// Be sure not to call file.Fd() as it will set the fd to blocking mode.
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file := os.NewFile(uintptr(deviceFd), "/dev/net/tun")
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return &tun{
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ReadWriteCloser: file,
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fd: deviceFd,
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cidr: cidr,
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l: l,
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routeTree: routeTree,
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}, nil
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}
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func newTun(_ *logrus.Logger, _ string, _ *net.IPNet, _ int, _ []Route, _ int, _ bool, _ bool) (*tun, error) {
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return nil, fmt.Errorf("newTun not supported in Android")
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}
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func (t *tun) RouteFor(ip iputil.VpnIp) iputil.VpnIp {
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r := t.routeTree.MostSpecificContains(ip)
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if r != nil {
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return r.(iputil.VpnIp)
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}
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return 0
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}
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func (t tun) Activate() error {
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return nil
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}
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func (t *tun) Cidr() *net.IPNet {
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return t.cidr
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}
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func (t *tun) Name() string {
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return "android"
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}
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func (t *tun) NewMultiQueueReader() (io.ReadWriteCloser, error) {
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return nil, fmt.Errorf("TODO: multiqueue not implemented for android")
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}
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