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// This file is part of gnunet-go, a GNUnet-implementation in Golang.
// Copyright (C) 2019-2022 Bernd Fix >Y<
//
// gnunet-go is free software: you can redistribute it and/or modify it
// under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License,
// or (at your option) any later version.
//
// gnunet-go is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
// SPDX-License-Identifier: AGPL3.0-or-later
package message
import (
"fmt"
"gnunet/crypto"
"gnunet/util"
)
//----------------------------------------------------------------------
// REVOCATION_QUERY
//----------------------------------------------------------------------
// RevocationQueryMsg is a request message to check if a key is revoked
type RevocationQueryMsg struct {
MsgSize uint16 `order:"big"` // total size of message
MsgType uint16 `order:"big"` // REVOCATION_QUERY (636)
Reserved uint32 `order:"big"` // Reserved for future use
Zone *crypto.ZoneKey // Zone that is to be checked for revocation
}
// NewRevocationQueryMsg creates a new message for a given zone.
func NewRevocationQueryMsg(zkey *crypto.ZoneKey) *RevocationQueryMsg {
return &RevocationQueryMsg{
MsgSize: 40,
MsgType: REVOCATION_QUERY,
Reserved: 0,
Zone: zkey,
}
}
// String returns a human-readable representation of the message.
func (m *RevocationQueryMsg) String() string {
return fmt.Sprintf("RevocationQueryMsg{zone=%s}", m.Zone.ID())
}
// Header returns the message header in a separate instance.
func (m *RevocationQueryMsg) Header() *Header {
return &Header{m.MsgSize, m.MsgType}
}
//----------------------------------------------------------------------
// REVOCATION_QUERY_RESPONSE
//----------------------------------------------------------------------
// RevocationQueryResponseMsg is a response message for revocation checks.
type RevocationQueryResponseMsg struct {
MsgSize uint16 `order:"big"` // total size of message
MsgType uint16 `order:"big"` // REVOCATION_QUERY_RESPONSE (637)
Valid uint32 `order:"big"` // revoked(0), valid(1)
}
// NewRevocationQueryResponseMsg creates a new response for a query.
func NewRevocationQueryResponseMsg(revoked bool) *RevocationQueryResponseMsg {
valid := 1
if revoked {
valid = 0
}
return &RevocationQueryResponseMsg{
MsgSize: 8,
MsgType: REVOCATION_QUERY_RESPONSE,
Valid: uint32(valid),
}
}
// String returns a human-readable representation of the message.
func (m *RevocationQueryResponseMsg) String() string {
return fmt.Sprintf("RevocationQueryResponseMsg{valid=%d}", m.Valid)
}
// Header returns the message header in a separate instance.
func (m *RevocationQueryResponseMsg) Header() *Header {
return &Header{m.MsgSize, m.MsgType}
}
//----------------------------------------------------------------------
// REVOCATION_REVOKE
//----------------------------------------------------------------------
// RevocationRevokeMsg is a request to revoke a given key with PoW data
type RevocationRevokeMsg struct {
MsgSize uint16 `order:"big"` // total size of message
MsgType uint16 `order:"big"` // REVOCATION_REVOKE (638)
Timestamp util.AbsoluteTime `` // Timestamp of revocation creation
TTL util.RelativeTime `` // TTL of revocation
PoWs []uint64 `size:"32" order:"big"` // (Sorted) list of PoW values
ZoneKeySig *crypto.ZoneSignature `` // public zone key (with signature) to be revoked
}
// NewRevocationRevokeMsg creates a new message for a given zone.
func NewRevocationRevokeMsg(zsig *crypto.ZoneSignature) *RevocationRevokeMsg {
return &RevocationRevokeMsg{
MsgSize: 364,
MsgType: REVOCATION_REVOKE,
Timestamp: util.AbsoluteTimeNow(),
TTL: util.RelativeTime{},
PoWs: make([]uint64, 32),
ZoneKeySig: zsig,
}
}
// String returns a human-readable representation of the message.
func (m *RevocationRevokeMsg) String() string {
return fmt.Sprintf("RevocationRevokeMsg{zone=%s}", m.ZoneKeySig.ID())
}
// Header returns the message header in a separate instance.
func (m *RevocationRevokeMsg) Header() *Header {
return &Header{m.MsgSize, m.MsgType}
}
//----------------------------------------------------------------------
// REVOCATION_REVOKE_RESPONSE
//----------------------------------------------------------------------
// RevocationRevokeResponseMsg is a response message for a revocation request
type RevocationRevokeResponseMsg struct {
MsgSize uint16 `order:"big"` // total size of message
MsgType uint16 `order:"big"` // REVOCATION_REVOKE_RESPONSE (639)
Success uint32 `order:"big"` // Revoke successful? (0=no, 1=yes)
}
// NewRevocationRevokeResponseMsg creates a new response for a query.
func NewRevocationRevokeResponseMsg(success bool) *RevocationRevokeResponseMsg {
status := 0
if success {
status = 1
}
return &RevocationRevokeResponseMsg{
MsgSize: 8,
MsgType: REVOCATION_QUERY_RESPONSE,
Success: uint32(status),
}
}
// String returns a human-readable representation of the message.
func (m *RevocationRevokeResponseMsg) String() string {
return fmt.Sprintf("RevocationRevokeResponseMsg{success=%v}", m.Success == 1)
}
// Header returns the message header in a separate instance.
func (m *RevocationRevokeResponseMsg) Header() *Header {
return &Header{m.MsgSize, m.MsgType}
}
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