go.ligato.io/vpp-agent/v3@v3.5.0/plugins/vpp/wireguardplugin/vppcalls/vpp2210/wireguard_vppcalls.go (about)

     1  //  Copyright (c) 2022 Doc.ai and/or its affiliates.
     2  //
     3  //  Licensed under the Apache License, Version 2.0 (the "License");
     4  //  you may not use this file except in compliance with the License.
     5  //  You may obtain a copy of the License at:
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  //  Unless required by applicable law or agreed to in writing, software
    10  //  distributed under the License is distributed on an "AS IS" BASIS,
    11  //  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  //  See the License for the specific language governing permissions and
    13  //  limitations under the License.
    14  
    15  package vpp2210
    16  
    17  import (
    18  	"encoding/base64"
    19  	"fmt"
    20  
    21  	"go.ligato.io/vpp-agent/v3/plugins/vpp/binapi/vpp2210/interface_types"
    22  	"go.ligato.io/vpp-agent/v3/plugins/vpp/binapi/vpp2210/ip_types"
    23  	vpp_wg "go.ligato.io/vpp-agent/v3/plugins/vpp/binapi/vpp2210/wireguard"
    24  	wg "go.ligato.io/vpp-agent/v3/proto/ligato/vpp/wireguard"
    25  )
    26  
    27  func (h *WgVppHandler) AddPeer(peer *wg.Peer) (uint32, error) {
    28  	invalidIdx := ^uint32(0)
    29  
    30  	peer_vpp := vpp_wg.WireguardPeer{
    31  		Port:                uint16(peer.Port),
    32  		PersistentKeepalive: uint16(peer.PersistentKeepalive),
    33  	}
    34  
    35  	publicKeyBin, err := base64.StdEncoding.DecodeString(peer.PublicKey)
    36  	if err != nil {
    37  		return invalidIdx, err
    38  	}
    39  	peer_vpp.PublicKey = publicKeyBin
    40  
    41  	ifaceMeta, found := h.ifIndexes.LookupByName(peer.WgIfName)
    42  	if !found {
    43  		return invalidIdx, fmt.Errorf("failed to get interface metadata")
    44  	}
    45  	peer_vpp.SwIfIndex = interface_types.InterfaceIndex(ifaceMeta.SwIfIndex)
    46  	peer_vpp.TableID = ifaceMeta.Vrf
    47  
    48  	peer_vpp.Endpoint, err = ip_types.ParseAddress(peer.Endpoint)
    49  	if err != nil {
    50  		return invalidIdx, err
    51  	}
    52  
    53  	for _, allowedIp := range peer.AllowedIps {
    54  		prefix, err := ip_types.ParsePrefix(allowedIp)
    55  		if err != nil {
    56  			return invalidIdx, err
    57  		}
    58  		peer_vpp.AllowedIps = append(peer_vpp.AllowedIps, prefix)
    59  	}
    60  
    61  	request := &vpp_wg.WireguardPeerAdd{
    62  		Peer: peer_vpp,
    63  	}
    64  	// prepare reply
    65  	reply := &vpp_wg.WireguardPeerAddReply{}
    66  	// send request and obtain reply
    67  	if err := h.callsChannel.SendRequest(request).ReceiveReply(reply); err != nil {
    68  		return invalidIdx, err
    69  	}
    70  	return reply.PeerIndex, nil
    71  }
    72  
    73  func (h *WgVppHandler) RemovePeer(peer_idx uint32) error {
    74  	// prepare request
    75  	request := &vpp_wg.WireguardPeerRemove{
    76  		PeerIndex: peer_idx,
    77  	}
    78  	// prepare reply
    79  	reply := &vpp_wg.WireguardPeerRemoveReply{}
    80  
    81  	// send request and obtain reply
    82  	if err := h.callsChannel.SendRequest(request).ReceiveReply(reply); err != nil {
    83  		return err
    84  	}
    85  	return nil
    86  }