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claim.go
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claim.go
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/*
* The Clear BSD License
*
* Copyright (c) 2019 Insolar Technologies
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted (subject to the limitations in the disclaimer below) provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
* Neither the name of Insolar Technologies nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
*
* NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
package packets
import (
"crypto"
"github.com/insolar/insolar/core"
"github.com/insolar/insolar/platformpolicy"
"github.com/pkg/errors"
)
//go:generate stringer -type=ClaimType
type ClaimType uint8
const (
TypeNodeJoinClaim = ClaimType(iota + 1)
TypeNodeAnnounceClaim
TypeCapabilityPollingAndActivation
TypeNodeViolationBlame
TypeNodeBroadcast
TypeNodeLeaveClaim
TypeChangeNetworkClaim
)
const claimHeaderSize = 2
// ChangeNetworkClaim uses to change network state.
type ChangeNetworkClaim struct {
}
func (cnc *ChangeNetworkClaim) Type() ClaimType {
return TypeChangeNetworkClaim
}
type ReferendumClaim interface {
Serializer
Type() ClaimType
Clone() ReferendumClaim
}
type ClaimSupplementary interface {
AddSupplementaryInfo(nodeID core.RecordRef)
}
type SignedClaim interface {
GetNodeID() core.RecordRef
GetPublicKey() (crypto.PublicKey, error)
SerializeRaw() ([]byte, error)
GetSignature() []byte
}
// NodeBroadcast is a broadcast of info. Must be brief and only one entry per node.
// Type 4.
type NodeBroadcast struct {
EmergencyLevel uint8
}
func (nb *NodeBroadcast) Clone() ReferendumClaim {
result := *nb
return &result
}
func (nb *NodeBroadcast) Type() ClaimType {
return TypeNodeBroadcast
}
// CapabilityPoolingAndActivation is a type 3.
type CapabilityPoolingAndActivation struct {
PollingFlags uint16
CapabilityType uint16
CapabilityRef [ReferenceLength]byte
}
func (cpa *CapabilityPoolingAndActivation) Clone() ReferendumClaim {
result := *cpa
return &result
}
func (cpa *CapabilityPoolingAndActivation) Type() ClaimType {
return TypeCapabilityPollingAndActivation
}
// NodeViolationBlame is a type 2.
type NodeViolationBlame struct {
BlameNodeID uint32
TypeViolation uint8
}
func (nvb *NodeViolationBlame) Clone() ReferendumClaim {
result := *nvb
return &result
}
func (nvb *NodeViolationBlame) Type() ClaimType {
return TypeNodeViolationBlame
}
const NodeAddressSize = 20
// TODO: create heterogeneous structure for variuos types of adresses (IPv4, IPv6, etc.)
type NodeAddress [NodeAddressSize]byte
func NewNodeAddress(address string) NodeAddress {
var result NodeAddress
result.Set(address)
return result
}
func (address *NodeAddress) Set(s string) {
copy(address[:], []byte(s)[:NodeAddressSize])
}
func (address NodeAddress) Get() string {
var i int
for i = 1; i < len(address); i++ {
if address[i] == 0 {
break
}
}
return string(address[:i])
}
// NodeJoinClaim is a type 1, len == 272.
type NodeJoinClaim struct {
ShortNodeID core.ShortNodeID
RelayNodeID core.ShortNodeID
ProtocolVersionAndFlags uint32
JoinsAfter uint32
NodeRoleRecID core.StaticRole
NodeRef core.RecordRef
NodeAddress NodeAddress
NodePK [PublicKeyLength]byte
Signature [SignatureLength]byte
}
func (njc *NodeJoinClaim) Clone() ReferendumClaim {
result := *njc
return &result
}
func (njc *NodeJoinClaim) GetNodeID() core.RecordRef {
return njc.NodeRef
}
func (njc *NodeJoinClaim) GetPublicKey() (crypto.PublicKey, error) {
keyProc := platformpolicy.NewKeyProcessor()
return keyProc.ImportPublicKeyBinary(njc.NodePK[:])
}
func (njc *NodeJoinClaim) GetSignature() []byte {
return njc.Signature[:]
}
func (njc *NodeJoinClaim) Type() ClaimType {
return TypeNodeJoinClaim
}
// NodeJoinClaim is a type 5, len == 272.
type NodeAnnounceClaim struct {
NodeJoinClaim
NodeAnnouncerIndex uint16
NodeJoinerIndex uint16
NodeCount uint16
CloudHash [HashLength]byte
// mapper is used to fill three fields above, is not serialized
BitSetMapper BitSetMapper
}
func (nac *NodeAnnounceClaim) Clone() ReferendumClaim {
result := *nac
return &result
}
func (nac *NodeAnnounceClaim) Type() ClaimType {
return TypeNodeAnnounceClaim
}
func (nac *NodeAnnounceClaim) SetCloudHash(cloudHash []byte) {
copy(nac.CloudHash[:], cloudHash[:HashLength])
}
// NodeLeaveClaim can be the only be issued by the node itself and must be the only claim record.
// Should be executed with the next pulse. Type 1, len == 0.
type NodeLeaveClaim struct {
// additional field that is not serialized and is set from transport layer on packet receive
NodeID core.RecordRef
ETA core.PulseNumber
}
func (nlc *NodeLeaveClaim) Clone() ReferendumClaim {
result := *nlc
return &result
}
func (nlc *NodeLeaveClaim) AddSupplementaryInfo(nodeID core.RecordRef) {
nlc.NodeID = nodeID
}
func (nlc *NodeLeaveClaim) Type() ClaimType {
return TypeNodeLeaveClaim
}
func getClaimSize(claim ReferendumClaim) uint16 {
return claimSizeMap[claim.Type()]
}
func getClaimWithHeaderSize(claim ReferendumClaim) uint16 {
return getClaimSize(claim) + claimHeaderSize
}
func NodeToClaim(node core.Node) (*NodeJoinClaim, error) {
keyProc := platformpolicy.NewKeyProcessor()
exportedKey, err := keyProc.ExportPublicKeyBinary(node.PublicKey())
if err != nil {
return nil, errors.Wrap(err, "[ NodeToClaim ] failed to export a public key")
}
var keyData [PublicKeyLength]byte
copy(keyData[:], exportedKey[:PublicKeyLength])
var s [SignatureLength]byte
return &NodeJoinClaim{
ShortNodeID: node.ShortID(),
RelayNodeID: node.ShortID(),
ProtocolVersionAndFlags: 0,
JoinsAfter: 0,
NodeRoleRecID: node.Role(),
NodeRef: node.ID(),
NodePK: keyData,
NodeAddress: NewNodeAddress(node.Address()),
Signature: s,
}, nil
}