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device: fail to give bind if it doesn't exist

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This commit is contained in:
Jason A. Donenfeld
2019-05-17 15:35:20 +02:00
parent 95c70b8032
commit c718f3940d
2 changed files with 13 additions and 2 deletions
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14
device/boundif_android.go
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@@ -5,8 +5,14 @@
package device
import "errors"
func (device *Device) PeekLookAtSocketFd4() (fd int, err error) {
sysconn, err := device.net.bind.(*nativeBind).ipv4.SyscallConn()
nb, ok := device.net.bind.(*nativeBind)
if !ok {
return 0, errors.New("no socket exists")
}
sysconn, err := nb.ipv4.SyscallConn()
if err != nil {
return
}
@@ -20,7 +26,11 @@ func (device *Device) PeekLookAtSocketFd4() (fd int, err error) {
}
func (device *Device) PeekLookAtSocketFd6() (fd int, err error) {
sysconn, err := device.net.bind.(*nativeBind).ipv6.SyscallConn()
nb, ok := device.net.bind.(*nativeBind)
if !ok {
return 0, errors.New("no socket exists")
}
sysconn, err := nb.ipv6.SyscallConn()
if err != nil {
return
}