85 lines
1.5 KiB
Go
85 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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"runtime"
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"github.com/sirupsen/logrus"
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"github.com/slackhq/nebula/iputil"
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"golang.org/x/sys/unix"
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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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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) (*tun, error) {
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if len(routes) > 0 {
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return nil, fmt.Errorf("routes are not supported in %s", runtime.GOOS)
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}
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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: int(file.Fd()),
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Cidr: cidr,
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l: l,
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}, nil
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}
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func newTun(_ *logrus.Logger, _ string, _ *net.IPNet, _ int, _ []Route, _ int, _ 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(iputil.VpnIp) iputil.VpnIp {
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return 0
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}
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func (t *tun) WriteRaw(b []byte) error {
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var nn int
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for {
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max := len(b)
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n, err := unix.Write(t.fd, b[nn:max])
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if n > 0 {
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nn += n
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}
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if nn == len(b) {
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return err
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}
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if err != nil {
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return err
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}
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if n == 0 {
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return io.ErrUnexpectedEOF
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}
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}
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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) CidrNet() *net.IPNet {
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return t.Cidr
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}
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func (t *tun) DeviceName() 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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