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org.bitcoinj.governance.GovernanceObject Maven / Gradle / Ivy
/*
* Copyright 2014 Hash Engineering Solutions
*
* 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 org.bitcoinj.governance;
import com.google.common.collect.LinkedHashMultimap;
import org.bitcoinj.core.*;
import org.bitcoinj.crypto.BLSPublicKey;
import org.bitcoinj.crypto.BLSSignature;
import org.bitcoinj.evolution.Masternode;
import org.bitcoinj.utils.Pair;
import org.bitcoinj.utils.Threading;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.io.OutputStream;
import java.io.Serializable;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.concurrent.locks.ReentrantLock;
import org.json.*;
import static org.bitcoinj.governance.GovernanceException.Type.*;
import static org.bitcoinj.governance.GovernanceVote.MAX_SUPPORTED_VOTE_SIGNAL;
import static org.bitcoinj.governance.GovernanceVote.VoteOutcome;
import static org.bitcoinj.governance.GovernanceVote.VoteOutcome.VOTE_OUTCOME_ABSTAIN;
import static org.bitcoinj.governance.GovernanceVote.VoteOutcome.VOTE_OUTCOME_NO;
import static org.bitcoinj.governance.GovernanceVote.VoteOutcome.VOTE_OUTCOME_YES;
import static org.bitcoinj.governance.GovernanceVote.VoteSignal;
import static org.bitcoinj.governance.GovernanceVote.VoteSignal.*;
public class GovernanceObject extends Message implements Serializable {
private static final Logger log = LoggerFactory.getLogger(GovernanceObject.class);
// critical section to protect the inner data structures
ReentrantLock lock = Threading.lock("MasternodeManager");
public static final int MAX_GOVERNANCE_OBJECT_DATA_SIZE = 16 * 1024;
public static final int MIN_GOVERNANCE_PEER_PROTO_VERSION = 70206;
public static final int GOVERNANCE_FILTER_PROTO_VERSION = 70206;
public static final double GOVERNANCE_FILTER_FP_RATE = 0.001;
public static final int GOVERNANCE_OBJECT_UNKNOWN = 0;
public static final int GOVERNANCE_OBJECT_PROPOSAL = 1;
public static final int GOVERNANCE_OBJECT_TRIGGER = 2;
public static final int GOVERNANCE_OBJECT_WATCHDOG = 3;
public static final Coin GOVERNANCE_PROPOSAL_FEE_TX = Coin.valueOf(5, 0);
public static final long GOVERNANCE_FEE_CONFIRMATIONS = 6;
public static final long GOVERNANCE_MIN_RELAY_FEE_CONFIRMATIONS = 1;
public static final long GOVERNANCE_UPDATE_MIN = 60*60;
public static final long GOVERNANCE_DELETION_DELAY = 10*60;
public static final long GOVERNANCE_ORPHAN_EXPIRATION_TIME = 10*60;
public static final long GOVERNANCE_WATCHDOG_EXPIRATION_TIME = 2*60*60;
public static final int GOVERNANCE_TRIGGER_EXPIRATION_BLOCKS = 576;
// FOR SEEN MAP ARRAYS - GOVERNANCE OBJECTS AND VOTES
static final int SEEN_OBJECT_IS_VALID = 0;
static final int SEEN_OBJECT_ERROR_INVALID = 1;
static final int SEEN_OBJECT_ERROR_IMMATURE = 2;
static final int SEEN_OBJECT_EXECUTED = 3; //used for triggers
static final int SEEN_OBJECT_UNKNOWN = 4; // the default
/// Object typecode
private int nObjectType;
/// parent object, 0 is root
private Sha256Hash nHashParent;
/// object revision in the system
private int nRevision;
/// time this object was created
private long nTime;
/// time this object was marked for deletion
private long nDeletionTime;
/// fee-tx
private Sha256Hash nCollateralHash;
/// Data field - can be used for anything
private byte [] data;
/// Masternode info for signed objects
private TransactionOutPoint masternodeOutpoint;
private MasternodeSignature vchSig;
/// is valid by blockchain
private boolean fCachedLocalValidity;
private String strLocalValidityError;
// VARIOUS FLAGS FOR OBJECT / SET VIA MASTERNODE VOTING
/// true == minimum network support has been reached for this object to be funded (doesn't mean it will for sure though)
private boolean fCachedFunding;
/// true == minimum network has been reached flagging this object as a valid and understood governance object (e.g, the serialized data is correct format, etc)
private boolean fCachedValid;
/// true == minimum network support has been reached saying this object should be deleted from the system entirely
private boolean fCachedDelete;
/** true == minimum network support has been reached flagging this object as endorsed by an elected representative body
* (e.g. business review board / technecial review board /etc)
*/
private boolean fCachedEndorsed;
/// object was updated and cached values should be updated soon
private boolean fDirtyCache;
public void setDirtyCache(boolean fDirtyCache) {
this.fDirtyCache = fDirtyCache;
unCache();
}
/// Object is no longer of interest
private boolean fExpired;
/// Failed to parse object data
private boolean fUnparsable;
protected HashMap mapCurrentMNVotes;
/// Limited map of votes orphaned by MN
private /*CacheMultiMap*/LinkedHashMultimap> mapOrphanVotes = LinkedHashMultimap.create(100,100);
private GovernanceObjectVoteFile fileVotes;
Context context;
public GovernanceObject(NetworkParameters params) {
super(params);
}
public GovernanceObject(NetworkParameters params, byte[] payload) {
super(params, payload, 0);
context = Context.get();
mapCurrentMNVotes = new HashMap();
}
public GovernanceObject(NetworkParameters params, byte[] payload, int cursor) {
super(params, payload, cursor);
context = Context.get();
mapCurrentMNVotes = new HashMap();
}
public final long getCreationTime() {
return nTime;
}
public final long getDeletionTime() {
return nDeletionTime;
}
public final void setDeletionTime(long deletionTime) {
nDeletionTime = deletionTime;
}
public final int getObjectType() {
return nObjectType;
}
public final Sha256Hash getCollateralHash() {
return nCollateralHash;
}
public final TransactionOutPoint getMasternodeOutpoint() {
return masternodeOutpoint;
}
public final boolean isSetCachedFunding() {
return fCachedFunding;
}
public final boolean isSetCachedValid() {
return fCachedValid;
}
public final boolean isSetCachedDelete() {
return fCachedDelete;
}
public final boolean isSetCachedEndorsed() {
return fCachedEndorsed;
}
public final boolean isSetDirtyCache() {
return fDirtyCache;
}
public final boolean isSetExpired() {
return fExpired;
}
public final void setExpired(boolean expired) {
fExpired = expired;
}
public final void invalidateVoteCache() {
fDirtyCache = true;
}
public final GovernanceObjectVoteFile getVoteFile() {
return fileVotes;
}
protected static int calcLength(byte[] buf, int offset) {
int cursor = offset;// + 4;
return cursor - offset;
}
@Override
protected void parse() throws ProtocolException {
nHashParent = readHash();
nRevision = (int)readUint32();
nTime = readInt64();
nCollateralHash = readHash();
data = readByteArray();
nObjectType = (int)readUint32();
masternodeOutpoint = new TransactionOutPoint(params, payload, cursor);
cursor += masternodeOutpoint.getMessageSize();
vchSig = new MasternodeSignature(params, payload, cursor);
cursor += vchSig.getMessageSize();
length = cursor - offset;
fileVotes = new GovernanceObjectVoteFile();
// AFTER DESERIALIZATION OCCURS, CACHED VARIABLES MUST BE CALCULATED MANUALLY
}
void parseFromDisk() {
nDeletionTime = readInt64();
fExpired = readBytes(1)[0] == 0 ? false : true;
int size = (int)readVarInt();
mapCurrentMNVotes = new HashMap();
for(int i = 0; i < size; ++i) {
TransactionOutPoint vin = new TransactionOutPoint(params, payload, offset);
cursor += vin.getMessageSize();
VoteRecord vr = new VoteRecord(params, payload, offset);
cursor += vr.getMessageSize();
mapCurrentMNVotes.put(vin, vr);
}
fileVotes = new GovernanceObjectVoteFile(params, payload, offset);
cursor += fileVotes.getMessageSize();
length = cursor - offset;
}
@Override
protected void bitcoinSerializeToStream(OutputStream stream) throws IOException {
stream.write(nHashParent.getReversedBytes());
Utils.uint32ToByteStreamLE(nRevision, stream);
Utils.int64ToByteStreamLE(nTime, stream);
stream.write(nCollateralHash.getReversedBytes());
Utils.bytesToByteStream(data, stream);
Utils.uint32ToByteStreamLE(nObjectType, stream);
masternodeOutpoint.bitcoinSerialize(stream);
vchSig.bitcoinSerialize(stream);
}
public void serializeToDisk(OutputStream stream) throws IOException {
log.info("gobject--CGovernanceObject::SerializationOp writing votes to disk");
Utils.int64ToByteStreamLE(nDeletionTime, stream);
stream.write((byte)(fExpired ? 0 : 1));
stream.write(new VarInt(mapCurrentMNVotes.size()).encode());
Iterator> it = mapCurrentMNVotes.entrySet().iterator();
while(it.hasNext()) {
Map.Entry entry = it.next();
entry.getKey().bitcoinSerialize(stream);
entry.getValue().bitcoinSerialize(stream);
}
fileVotes.bitcoinSerialize(stream);
log.info("gobject--CGovernanceObject::SerializationOp hash = {}, vote count = {}", getHash().toString(), fileVotes.getVoteCount());
}
public String toString() {
return "GovernanceObject: " + getDataAsPlainString().substring(0, 100);
}
public Sha256Hash getHash() {
try {
UnsafeByteArrayOutputStream bos = new UnsafeByteArrayOutputStream();
bos.write(nHashParent.getReversedBytes());
Utils.uint32ToByteStreamLE(nRevision, bos);
Utils.int64ToByteStreamLE(nTime, bos);
Utils.stringToByteStream(getDataAsHexString(), bos);
new TransactionInput(params, null, new byte[0], masternodeOutpoint).bitcoinSerialize(bos);
vchSig.bitcoinSerialize(bos);
return Sha256Hash.wrapReversed(Sha256Hash.hashTwice(bos.toByteArray()));
} catch (IOException e) {
throw new RuntimeException(e);
}
}
public Sha256Hash getSignatureHash() {
try {
UnsafeByteArrayOutputStream bos = new UnsafeByteArrayOutputStream();
bos.write(nHashParent.getReversedBytes());
Utils.uint32ToByteStreamLE(nRevision, bos);
Utils.int64ToByteStreamLE(nTime, bos);
bos.write(nCollateralHash.getReversedBytes());
Utils.bytesToByteStream(data, bos);
Utils.uint32ToByteStreamLE(nObjectType, bos);
masternodeOutpoint.bitcoinSerialize(bos);
return Sha256Hash.twiceOf(bos.toByteArray());
} catch (IOException e) {
throw new RuntimeException(e);
}
}
String getHexData() {
try {
UnsafeByteArrayOutputStream bos = new UnsafeByteArrayOutputStream(400);
bitcoinSerialize(bos);
return Utils.HEX.encode(bos.toByteArray());
} catch (IOException x) {
return "";
}
}
public void updateLocalValidity() {
//LOCK(cs_main); how to do this?
// THIS DOES NOT CHECK COLLATERAL, THIS IS CHECKED UPON ORIGINAL ARRIVAL
fCachedLocalValidity = isValidLocally(strLocalValidityError, false);
}
public static class Validity {
public String strError = "";
public boolean fMissingMasternode = false;
public boolean fMissingConfirmations = false;
}
public boolean isValidLocally(String strError, boolean fCheckCollateral) {
Validity validity = new Validity();
return isValidLocally(validity, fCheckCollateral);
}
public boolean isValidLocally(Validity validity, boolean fCheckCollateral) {
validity.fMissingMasternode = false;
validity.fMissingConfirmations = false;
if (fUnparsable) {
validity.strError = "Object data unparseable";
return false;
}
switch (nObjectType) {
case GOVERNANCE_OBJECT_PROPOSAL:
case GOVERNANCE_OBJECT_TRIGGER:
case GOVERNANCE_OBJECT_WATCHDOG:
break;
default:
validity.strError = String.format("Invalid object type %d", nObjectType);
return false;
}
// IF ABSOLUTE NO COUNT (NO-YES VALID VOTES) IS MORE THAN 10% OF THE NETWORK MASTERNODES, OBJ IS INVALID
// CHECK COLLATERAL IF REQUIRED (HIGH CPU USAGE)
if (fCheckCollateral) {
if ((nObjectType == GOVERNANCE_OBJECT_TRIGGER) || (nObjectType == GOVERNANCE_OBJECT_WATCHDOG)) {
String strOutpoint = masternodeOutpoint.toStringShort();
Masternode infoMn = context.masternodeListManager.getListAtChainTip().getMNByCollateral(masternodeOutpoint);
if (infoMn == null ) {
/* TODO: fix this
Pair status = Masternode.checkCollateral(masternodeOutpoint);
Masternode.CollateralStatus err = status.getFirst();
if (err == Masternode.CollateralStatus.COLLATERAL_OK) {
validity.fMissingMasternode = true;
validity.strError = "Masternode not found: " + strOutpoint;
} else if (err == Masternode.CollateralStatus.COLLATERAL_UTXO_NOT_FOUND) {
validity.strError = "Failed to find Masternode UTXO, missing masternode=" + strOutpoint + "\n";
} else if (err == Masternode.CollateralStatus.COLLATERAL_INVALID_AMOUNT) {
validity.strError = "Masternode UTXO should have 1000 DASH, missing masternode=" + strOutpoint + "\n";
}
*/
return false;
}
// Check that we have a valid MN signature
if (!checkSignature(infoMn.getPubKeyOperator())) {
validity.strError = "Invalid masternode signature for: " + strOutpoint + ", pubkey id = " + infoMn.getPubKeyOperator().toString();
return false;
}
return true;
}
if (!isCollateralValid(validity)) {
return false;
}
}
/*
TODO
- There might be an issue with multisig in the coinbase on mainnet, we will add support for it in a future release.
- Post 12.2+ (test multisig coinbase transaction)
*/
// 12.1 - todo - compile error
// if(address.IsPayToScriptHash()) {
// strError = "Governance system - multisig is not currently supported";
// return false;
// }
return true;
}
@Deprecated
boolean checkSignature(PublicKey pubKeyMasternode)
{
StringBuilder strError = new StringBuilder();
String strMessage = getSignatureMessage();
if (!MessageSigner.verifyMessage(pubKeyMasternode, vchSig, strMessage, strError)) {
log.error("CGovernance::CheckSignature -- VerifyMessage() failed, error: {}", strError);
return false;
}
return true;
}
boolean checkSignature(BLSPublicKey pubKey) {
BLSSignature sig = new BLSSignature(vchSig.getBytes());
if (!sig.verifyInsecure(pubKey, getSignatureHash())) {
log.error("GovernanceObject.CheckSignature -- VerifyInsecure() failed\n");
return false;
}
return true;
}
Coin getMinCollateralFee()
{
// Only 1 type has a fee for the moment but switch statement allows for future object types
switch(nObjectType) {
case GOVERNANCE_OBJECT_PROPOSAL: return GOVERNANCE_PROPOSAL_FEE_TX;
case GOVERNANCE_OBJECT_TRIGGER: return Coin.ZERO;
case GOVERNANCE_OBJECT_WATCHDOG: return Coin.ZERO;
default: return NetworkParameters.MAX_MONEY;
}
}
boolean isCollateralValid(Validity validity)
{
validity.strError = "";
validity.fMissingConfirmations = false;
Coin nMinFee = getMinCollateralFee();
Sha256Hash nExpectedHash = getHash();
Transaction txCollateral;
Sha256Hash nBlockHash;
// RETRIEVE TRANSACTION IN QUESTION
/*if(!GetTransaction(nCollateralHash, txCollateral, Params().GetConsensus(), nBlockHash, true)){
strError = strprintf("Can't find collateral tx %s", txCollateral.ToString());
log.info("CGovernanceObject::IsCollateralValid -- %s\n", strError);
return false;
}
if(txCollateral.vout.size() < 1) {
strError = strprintf("tx vout size less than 1 | %d", txCollateral.vout.size());
log.info("CGovernanceObject::IsCollateralValid -- %s\n", strError);
return false;
}
// LOOK FOR SPECIALIZED GOVERNANCE SCRIPT (PROOF OF BURN)
CScript findScript;
findScript << OP_RETURN << ToByteVector(nExpectedHash);
DBG( cout << "IsCollateralValid: txCollateral.vout.size() = " << txCollateral.vout.size() << endl; );
DBG( cout << "IsCollateralValid: findScript = " << ScriptToAsmStr( findScript, false ) << endl; );
DBG( cout << "IsCollateralValid: nMinFee = " << nMinFee << endl; );
bool foundOpReturn = false;
BOOST_FOREACH(const CTxOut o, txCollateral.vout) {
DBG( cout << "IsCollateralValid txout : " << o.ToString()
<< ", o.nValue = " << o.nValue
<< ", o.scriptPubKey = " << ScriptToAsmStr( o.scriptPubKey, false )
<< endl; );
if(!o.scriptPubKey.IsPayToPublicKeyHash() && !o.scriptPubKey.IsUnspendable()) {
strError = strprintf("Invalid Script %s", txCollateral.ToString());
log.info ("CGovernanceObject::IsCollateralValid -- %s\n", strError);
return false;
}
if(o.scriptPubKey == findScript && o.nValue >= nMinFee) {
DBG( cout << "IsCollateralValid foundOpReturn = true" << endl; );
foundOpReturn = true;
}
else {
DBG( cout << "IsCollateralValid No match, continuing" << endl; );
}
}
if(!foundOpReturn){
strError = strprintf("Couldn't find opReturn %s in %s", nExpectedHash.ToString(), txCollateral.ToString());
log.info ("CGovernanceObject::IsCollateralValid -- %s\n", strError);
return false;
}
// GET CONFIRMATIONS FOR TRANSACTION
AssertLockHeld(cs_main);
int nConfirmationsIn = instantsend.GetConfirmations(nCollateralHash);
if (nBlockHash != uint256()) {
BlockMap::iterator mi = mapBlockIndex.find(nBlockHash);
if (mi != mapBlockIndex.end() && (*mi).second) {
CBlockIndex* pindex = (*mi).second;
if (chainActive.Contains(pindex)) {
nConfirmationsIn += chainActive.Height() - pindex->nHeight + 1;
}
}
}
if(nConfirmationsIn < GOVERNANCE_FEE_CONFIRMATIONS) {
strError = strprintf("Collateral requires at least %d confirmations to be relayed throughout the network (it has only %d)", GOVERNANCE_FEE_CONFIRMATIONS, nConfirmationsIn);
if (nConfirmationsIn >= GOVERNANCE_MIN_RELAY_FEE_CONFIRMATIONS) {
fMissingConfirmations = true;
strError += ", pre-accepted -- waiting for required confirmations";
} else {
strError += ", rejected -- try again later";
}
log.info ("CGovernanceObject::IsCollateralValid -- %s\n", strError);
return false;
}*/
validity.strError = "valid";
return true;
}
/**
* GetData - As
* --------------------------------------------------------
*
*/
public String getDataAsHexString() {
return Utils.HEX.encode(data);
}
public String getDataAsPlainString() {
return new String(data);
}
public void updateSentinelVariables() {
// CALCULATE MINIMUM SUPPORT LEVELS REQUIRED
if(context.masternodeListManager.getLock().isHeldByCurrentThread()) {
}
int nMnCount = context.masternodeListManager.getListAtChainTip().countEnabled();
if (nMnCount == 0) {
return;
}
// CALCULATE THE MINUMUM VOTE COUNT REQUIRED FOR FULL SIGNAL
// todo - 12.1 - should be set to `10` after governance vote compression is implemented
int nAbsVoteReq = Math.max(params.getGovernanceMinQuorum(), nMnCount / 10);
int nAbsDeleteReq = Math.max(params.getGovernanceMinQuorum(), (2 * nMnCount) / 3);
// todo - 12.1 - Temporarily set to 1 for testing - reverted
//nAbsVoteReq = 1;
// SET SENTINEL FLAGS TO FALSE
fCachedFunding = false;
fCachedValid = true; //default to valid
fCachedEndorsed = false;
fDirtyCache = false;
// SET SENTINEL FLAGS TO TRUE IF MIMIMUM SUPPORT LEVELS ARE REACHED
// ARE ANY OF THESE FLAGS CURRENTLY ACTIVATED?
if (getAbsoluteYesCount(VOTE_SIGNAL_FUNDING) >= nAbsVoteReq) {
fCachedFunding = true;
}
if ((getAbsoluteYesCount(VOTE_SIGNAL_DELETE) >= nAbsDeleteReq) && !fCachedDelete) {
fCachedDelete = true;
if (nDeletionTime == 0) {
nDeletionTime = Utils.currentTimeSeconds();
}
}
if (getAbsoluteYesCount(VOTE_SIGNAL_ENDORSED) >= nAbsVoteReq) {
fCachedEndorsed = true;
}
if (getAbsoluteNoCount(VOTE_SIGNAL_VALID) >= nAbsVoteReq) {
fCachedValid = false;
}
}
public int countMatchingVotes(VoteSignal eVoteSignalIn, VoteOutcome eVoteOutcomeIn) {
int nCount = 0;
for (Map.Entry it : mapCurrentMNVotes.entrySet()) {
final VoteRecord recVote = it.getValue();
VoteInstance voteInstance = recVote.mapInstances.get(eVoteSignalIn.value);
if (voteInstance == null) {
continue;
}
if (voteInstance.eOutcome == eVoteOutcomeIn) {
++nCount;
}
}
return nCount;
}
public int getAbsoluteYesCount(VoteSignal eVoteSignalIn) {
return getYesCount(eVoteSignalIn) - getNoCount(eVoteSignalIn);
}
public int getAbsoluteNoCount(VoteSignal eVoteSignalIn) {
return getNoCount(eVoteSignalIn) - getYesCount(eVoteSignalIn);
}
public int getYesCount(VoteSignal eVoteSignalIn) {
return countMatchingVotes(eVoteSignalIn, VOTE_OUTCOME_YES);
}
public int getNoCount(VoteSignal eVoteSignalIn) {
return countMatchingVotes(eVoteSignalIn, VOTE_OUTCOME_NO);
}
public int getAbstainCount(VoteSignal eVoteSignalIn) {
return countMatchingVotes(eVoteSignalIn, VOTE_OUTCOME_ABSTAIN);
}
public Pair getCurrentMNVotes(TransactionOutPoint mnCollateralOutpoint) {
Pair result = new Pair(false, null); //default to failure
VoteRecord it = mapCurrentMNVotes.get(mnCollateralOutpoint);
if (it == null) {
return result;
}
result.setFirst(true); //success
result.setSecond(it);
return result;
}
public void relay() {
// Do not relay
}
public boolean processVote(Peer pfrom, GovernanceVote vote, GovernanceException exception) {
if (context.masternodeSync.syncFlags.contains(MasternodeSync.SYNC_FLAGS.SYNC_MASTERNODE_LIST) &&
context.masternodeListManager.getListAtChainTip().getMNByCollateral(vote.getMasternodeOutpoint()) == null) {
String message = "CGovernanceObject::ProcessVote -- Masternode index not found";
exception.setException(message, GOVERNANCE_EXCEPTION_WARNING);
if (mapOrphanVotes.put(vote.getMasternodeOutpoint(), new Pair((int)(Utils.currentTimeSeconds() + GOVERNANCE_ORPHAN_EXPIRATION_TIME), vote))) {
if (pfrom != null) {
//TODO: context.masternodeManager.askForMN(pfrom, vote.getMasternodeOutpoint());
}
log.info("{}", message);
} else {
log.info("gobject--{}", message);
}
return false;
}
VoteRecord recVote = mapCurrentMNVotes.get(vote.getMasternodeOutpoint());
if (recVote == null) {
recVote = new VoteRecord(params);
mapCurrentMNVotes.put(vote.getMasternodeOutpoint(), recVote);
}
VoteSignal eSignal = vote.getSignal();
if (eSignal == VOTE_SIGNAL_NONE) {
String signalMessage = "CGovernanceObject::ProcessVote -- Vote signal: none";
log.info("gobject--{}", signalMessage);
exception.setException(signalMessage, GOVERNANCE_EXCEPTION_WARNING);
return false;
}
if (eSignal.getValue() > MAX_SUPPORTED_VOTE_SIGNAL) {
String signalMessage = "CGovernanceObject::ProcessVote -- Unsupported vote signal: " + GovernanceVoting.convertSignalToString(vote.getSignal());
log.info("{}", signalMessage);
exception.setException(signalMessage, GOVERNANCE_EXCEPTION_PERMANENT_ERROR, 20);
return false;
}
VoteInstance voteInstance = recVote.mapInstances.get(eSignal.getValue());
if (voteInstance == null) {
voteInstance = new VoteInstance(params);
recVote.mapInstances.put(eSignal.getValue(), voteInstance);
}
// Reject obsolete votes
if (vote.getTimestamp() < voteInstance.nCreationTime) {
String obMessage = "CGovernanceObject::ProcessVote -- Obsolete vote";
log.info("gobject--{}", obMessage);
exception.setException(obMessage, GOVERNANCE_EXCEPTION_NONE);
return false;
}
long nNow = Utils.currentTimeSeconds();
long nVoteTimeUpdate = voteInstance.nTime;
if (context.governanceManager.areRateChecksEnabled()) {
long nTimeDelta = nNow - voteInstance.nTime;
if (nTimeDelta < GOVERNANCE_UPDATE_MIN) {
String oftenMessage = "CGovernanceObject::ProcessVote -- Masternode voting too often, MN outpoint = " +
vote.getMasternodeOutpoint().toStringShort() + ", governance object hash = " + getHash().toString() +
", time delta = " + nTimeDelta;
log.info("gobject--{}", oftenMessage);
exception.setException(oftenMessage, GOVERNANCE_EXCEPTION_TEMPORARY_ERROR);
nVoteTimeUpdate = nNow;
return false;
}
}
// Finally check that the vote is actually valid (done last because of cost of signature verification)
if (!vote.isValid(true)) {
String validMessage = "CGovernanceObject::ProcessVote -- Invalid vote" + ", MN outpoint = " + vote.getMasternodeOutpoint().toStringShort() + ", governance object hash = " + getHash().toString() + ", vote hash = " + vote.getHash().toString();
log.info("gobject--{}", validMessage);
exception.setException(validMessage, GOVERNANCE_EXCEPTION_PERMANENT_ERROR, 20);
context.governanceManager.addInvalidVote(vote);
return false;
}
if (!context.masternodeMetaDataManager.addGovernanceVote(vote.getMasternodeOutpoint(), vote.getParentHash())) {
String unableMessage = "CGovernanceObject::ProcessVote -- Unable to add governance vote" + ", MN outpoint = " + vote.getMasternodeOutpoint().toStringShort() + ", governance object hash = " + getHash().toString();
log.info("gobject--{}", unableMessage);
exception.setException(unableMessage, GOVERNANCE_EXCEPTION_PERMANENT_ERROR);
return false;
}
voteInstance = new VoteInstance(params, vote.getOutcome(), nVoteTimeUpdate, vote.getTimestamp());
if (!fileVotes.hasVote(vote.getHash())) {
fileVotes.addVote(vote);
}
fDirtyCache = true;
return true;
}
public JSONObject getJSONObject() {
JSONTokener parser = new JSONTokener(getDataAsPlainString());
JSONObject jsonObject = new JSONObject(parser);
return jsonObject;
}
public void clearMasternodeVotes() {
Iterator> it = mapCurrentMNVotes.entrySet().iterator();
while (it.hasNext()) {
Map.Entry entry = it.next();
if (context.masternodeListManager.getListAtChainTip().getMNByCollateral(entry.getKey()) == null) {
fileVotes.removeVotesFromMasternode(entry.getKey());
it.remove();
}
}
}
public String getSignatureMessage() {
lock.lock();
try {
String strMessage = nHashParent.toString() + "|" +
nRevision + "|" +
nTime + "|" +
getDataAsHexString() + "|" +
masternodeOutpoint.toStringShort() + "|" +
nCollateralHash.toString();
return strMessage;
} finally {
lock.unlock();
}
}
public boolean sign(ECKey keyMasternode, PublicKey pubKeyMasternode) {
StringBuilder strError = new StringBuilder();
String strMessage = getSignatureMessage();
if ((vchSig = MessageSigner.signMessage(strMessage, keyMasternode)) == null) {
log.error("CGovernanceObject::Sign -- SignMessage() failed");
return false;
}
if (!MessageSigner.verifyMessage(pubKeyMasternode, vchSig, strMessage, strError)) {
log.error("CGovernanceObject::Sign -- VerifyMessage() failed, error: {}", strError);
return false;
}
log.info("sign -- pubkey id = {}, masternode = {}", Utils.HEX.encode(pubKeyMasternode.getId()), masternodeOutpoint.toStringShort());
return true;
}
}
