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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,117 @@ | ||
| // Copyright (c) 2022 Cisco and/or its affiliates. | ||
| // | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
| // | ||
| // 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. | ||
|
|
||
| package ipsec | ||
|
|
||
| import ( | ||
| "context" | ||
| "net" | ||
|
|
||
| "git.fd.io/govpp.git/api" | ||
| "github.com/golang/protobuf/ptypes/empty" | ||
| "github.com/pkg/errors" | ||
| "google.golang.org/grpc" | ||
|
|
||
| "github.com/networkservicemesh/api/pkg/api/networkservice" | ||
| "github.com/networkservicemesh/api/pkg/api/networkservice/mechanisms/cls" | ||
| ipsecMech "github.com/networkservicemesh/api/pkg/api/networkservice/mechanisms/ipsec" | ||
| "github.com/networkservicemesh/api/pkg/api/networkservice/payload" | ||
| "github.com/networkservicemesh/sdk/pkg/networkservice/core/chain" | ||
| "github.com/networkservicemesh/sdk/pkg/networkservice/core/next" | ||
| "github.com/networkservicemesh/sdk/pkg/networkservice/utils/metadata" | ||
| "github.com/networkservicemesh/sdk/pkg/tools/postpone" | ||
|
|
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| "github.com/networkservicemesh/sdk-vpp/pkg/networkservice/mechanisms/ipsec/mtu" | ||
| "github.com/networkservicemesh/sdk-vpp/pkg/networkservice/pinhole" | ||
| ) | ||
|
|
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| type ipsecClient struct { | ||
| vppConn api.Connection | ||
| tunnelIP net.IP | ||
| } | ||
|
|
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| // NewClient - returns a new client for the IPSec remote mechanism | ||
| func NewClient(vppConn api.Connection, tunnelIP net.IP) networkservice.NetworkServiceClient { | ||
| return chain.NewNetworkServiceClient( | ||
| &ipsecClient{ | ||
| vppConn: vppConn, | ||
| tunnelIP: tunnelIP, | ||
| }, | ||
| mtu.NewClient(vppConn, tunnelIP), | ||
| ) | ||
| } | ||
|
|
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| func (i *ipsecClient) Request(ctx context.Context, request *networkservice.NetworkServiceRequest, opts ...grpc.CallOption) (*networkservice.Connection, error) { | ||
| if request.GetConnection().GetPayload() != payload.IP { | ||
| return next.Client(ctx).Request(ctx, request, opts...) | ||
| } | ||
|
|
||
| rsaKey, err := generateRSAKey() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| publicKey, err := createCertBase64(rsaKey, metadata.IsClient(i)) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| // If we already have a key we can reuse it | ||
| // else create a new one and store it after successful interface creation | ||
| if mechanism := ipsecMech.ToMechanism(request.GetConnection().GetMechanism()); mechanism != nil { | ||
| // If there is a key in mechanism then we can use it | ||
| publicKey = mechanism.SrcPublicKey() | ||
| } | ||
| mechanism := &networkservice.Mechanism{ | ||
| Cls: cls.REMOTE, | ||
| Type: ipsecMech.MECHANISM, | ||
| Parameters: make(map[string]string), | ||
| } | ||
| ipsecMech.ToMechanism(mechanism). | ||
| SetSrcPublicKey(publicKey). | ||
| SetSrcIP(i.tunnelIP). | ||
| SetSrcPort(ikev2DefaultPort) | ||
|
|
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| request.MechanismPreferences = append(request.MechanismPreferences, mechanism) | ||
|
|
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| // Store extra IPPort entry to allow IKE protocol - https://www.rfc-editor.org/rfc/rfc5996 | ||
| pinhole.StoreExtra(ctx, metadata.IsClient(i), pinhole.NewIPPort(i.tunnelIP.String(), 500)) | ||
|
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| postponeCtxFunc := postpone.ContextWithValues(ctx) | ||
|
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| conn, err := next.Client(ctx).Request(ctx, request, opts...) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| if err = create(ctx, conn, i.vppConn, rsaKey, metadata.IsClient(i)); err != nil { | ||
| closeCtx, cancelClose := postponeCtxFunc() | ||
| defer cancelClose() | ||
|
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||
| if _, closeErr := i.Close(closeCtx, conn, opts...); closeErr != nil { | ||
| err = errors.Wrapf(err, "connection closed with error: %s", closeErr.Error()) | ||
| } | ||
|
|
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| return nil, err | ||
| } | ||
|
|
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| return conn, nil | ||
| } | ||
|
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| func (i *ipsecClient) Close(ctx context.Context, conn *networkservice.Connection, opts ...grpc.CallOption) (*empty.Empty, error) { | ||
| if mechanism := ipsecMech.ToMechanism(conn.GetMechanism()); mechanism != nil { | ||
| delInterface(ctx, conn, i.vppConn, metadata.IsClient(i)) | ||
| } | ||
| return next.Client(ctx).Close(ctx, conn, opts...) | ||
| } |
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