forked from scionproto/scion
/
payload_scmp.go
41 lines (36 loc) · 1.28 KB
/
payload_scmp.go
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// Copyright 2016 ETH Zurich
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// This file handles SCMP payload retrieval.
package rpkt
import (
"github.com/scionproto/scion/go/lib/addr"
"github.com/scionproto/scion/go/lib/common"
"github.com/scionproto/scion/go/lib/ctrl/path_mgmt"
"github.com/scionproto/scion/go/lib/scmp"
)
type RevTokenCallbackArgs struct {
RevInfo *path_mgmt.RevInfo
Addrs []addr.HostSVC
}
// parseSCMPPayload is a hook that can be used for hookPayload, to retrieve the
// SCMP payload.
func (rp *RtrPkt) parseSCMPPayload() (HookResult, common.Payload, error) {
hdr := rp.l4.(*scmp.Hdr)
pld, err := scmp.PldFromRaw(rp.Raw[rp.idxs.pld:],
scmp.ClassType{Class: hdr.Class, Type: hdr.Type})
if err != nil {
return HookError, nil, err
}
return HookFinish, pld, nil
}