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Merge pull request #439 from rhaidiz/master

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Add option to manually specify the gateway
This commit is contained in:
evilsocket 2019-02-12 10:07:30 +01:00 • committed by GitHub
commit 17952a3904
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3 changed files with 23 additions and 1 deletions
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17
network/net_gateway.go
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@ -3,6 +3,7 @@
package network
import (
"fmt"
"strings"
"github.com/bettercap/bettercap/core"
@ -48,3 +49,19 @@ func FindGateway(iface *Endpoint) (*Endpoint, error) {
Debug("FindGateway(%s): nothing found :/", iface.Name())
return nil, ErrNoGateway
}
func GatewayProvidedByUser(iface *Endpoint, gateway string) (*Endpoint, error) {
Debug("GatewayProvidedByUser(%s) [cmd=%v opts=%v parser=%v]", gateway, IPv4RouteCmd, IPv4RouteCmdOpts, IPv4RouteParser)
if IPv4Validator.MatchString(gateway) {
Debug("valid gateway ip %s",gateway)
ifName := iface.Name()
// we have the address, now we need its mac
mac, err := ArpLookup(ifName, gateway, false)
if err != nil {
return nil, err
}
Debug("gateway is %s[%s]", gateway, mac)
return NewEndpoint(gateway, mac), nil
}
return nil, fmt.Errorf("Provided gateway %s not a valid IPv4 address! Revert to find default gateway.",gateway)
}