refactor: pull libbitcoin_server (governance) code out of wallet code 4/N

src/Makefile.am

@@ -187,6 +187,7 @@ BITCOIN_CORE_H = \
   dsnotificationinterface.h \
   governance/governance.h \
   governance/classes.h \
+  governance/common.h \
   governance/exceptions.h \
   governance/object.h \
   governance/validators.h \
@@ -702,6 +703,7 @@ libbitcoin_common_a_SOURCES = \
   core_read.cpp \
   core_write.cpp \
   deploymentinfo.cpp \
+  governance/common.cpp \
   key.cpp \
   key_io.cpp \
   merkleblock.cpp \

src/coinjoin/coinjoin.cpp

@@ -8,6 +8,7 @@
 #include <chain.h>
 #include <chainparams.h>
 #include <consensus/validation.h>
+#include <governance/common.h>
 #include <llmq/chainlocks.h>
 #include <llmq/instantsend.h>
 #include <llmq/utils.h>

src/governance/common.cpp

@@ -0,0 +1,73 @@
+// Copyright (c) 2014-2023 The Dash Core developers
+// Distributed under the MIT/X11 software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <governance/common.h>
+
+#include <util/strencodings.h>
+#include <util/underlying.h>
+#include <hash.h>
+#include <univalue.h>
+
+namespace Governance
+{
+
+Object::Object(const uint256& nHashParent, int nRevision, int64_t nTime, const uint256& nCollateralHash, const std::string& strDataHex) :
+    hashParent{nHashParent},
+    revision{nRevision},
+    time{nTime},
+    collateralHash{nCollateralHash},
+    masternodeOutpoint{},
+    vchSig{},
+    vchData{ParseHex(strDataHex)}
+{
+}
+
+uint256 Object::GetHash() const
+{
+    // Note: doesn't match serialization
+
+    // CREATE HASH OF ALL IMPORTANT PIECES OF DATA
+
+    CHashWriter ss(SER_GETHASH, PROTOCOL_VERSION);
+    ss << hashParent;
+    ss << revision;
+    ss << time;
+    ss << HexStr(vchData);
+    ss << masternodeOutpoint << uint8_t{} << 0xffffffff; // adding dummy values here to match old hashing
+    ss << vchSig;
+    // fee_tx is left out on purpose
+
+    return ss.GetHash();
+}
+
+UniValue Object::ToJson() const
+{
+    UniValue obj(UniValue::VOBJ);
+    obj.pushKV("objectHash", GetHash().ToString());
+    obj.pushKV("parentHash", hashParent.ToString());
+    obj.pushKV("collateralHash", collateralHash.ToString());
+    obj.pushKV("createdAt", time);
+    obj.pushKV("revision", revision);
+    UniValue data;
+    if (!data.read(GetDataAsPlainString())) {
+        data.clear();
+        data.setObject();
+        data.pushKV("plain", GetDataAsPlainString());
+    }
+    data.pushKV("hex", GetDataAsHexString());
+    obj.pushKV("data", data);
+    return obj;
+}
+
+std::string Object::GetDataAsHexString() const
+{
+    return HexStr(vchData);
+}
+
+std::string Object::GetDataAsPlainString() const
+{
+    return std::string(vchData.begin(), vchData.end());
+}
+
+} // namespace Governance

src/governance/common.h

@@ -0,0 +1,86 @@
+// Copyright (c) 2014-2023 The Dash Core developers
+// Distributed under the MIT/X11 software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#ifndef BITCOIN_GOVERNANCE_COMMON_H
+#define BITCOIN_GOVERNANCE_COMMON_H
+
+#include <primitives/transaction.h>
+#include <uint256.h>
+
+#include <serialize.h>
+
+#include <string>
+#include <vector>
+
+/**
+ * This module is a public interface of governance module that can be used
+ * in other components such as wallet
+ */
+
+class UniValue;
+
+enum class GovernanceObject : int {
+    UNKNOWN = 0,
+    PROPOSAL,
+    TRIGGER
+};
+template<> struct is_serializable_enum<GovernanceObject> : std::true_type {};
+
+namespace Governance
+{
+class Object
+{
+public:
+    Object() = default;
+
+    Object(const uint256& nHashParent, int nRevision, int64_t nTime, const uint256& nCollateralHash, const std::string& strDataHex);
+
+    UniValue ToJson() const;
+
+    uint256 GetHash() const;
+
+    std::string GetDataAsHexString() const;
+    std::string GetDataAsPlainString() const;
+
+    /// Object typecode
+    GovernanceObject type{GovernanceObject::UNKNOWN};
+
+    /// parent object, 0 is root
+    uint256 hashParent{};
+
+    /// object revision in the system
+    int revision{0};
+
+    /// time this object was created
+    int64_t time{0};
+
+    /// fee-tx
+    uint256 collateralHash{};
+
+    /// Masternode info for signed objects
+    COutPoint masternodeOutpoint;
+    std::vector<unsigned char> vchSig{};
+
+    /// Data field - can be used for anything
+    std::vector<unsigned char> vchData;
+
+    SERIALIZE_METHODS(Object, obj)
+    {
+        READWRITE(
+                obj.hashParent,
+                obj.revision,
+                obj.time,
+                obj.collateralHash,
+                obj.vchData,
+                obj.type,
+                obj.masternodeOutpoint
+                );
+        if (!(s.GetType() & SER_GETHASH)) {
+            READWRITE(obj.vchSig);
+        }
+    }
+};
+
+} // namespace Governance
+#endif

src/governance/governance.cpp

@@ -12,6 +12,7 @@
 #include <evo/deterministicmns.h>
 #include <flat-database.h>
 #include <governance/classes.h>
+#include <governance/common.h>
 #include <governance/validators.h>
 #include <masternode/meta.h>
 #include <masternode/node.h>
@@ -333,7 +334,7 @@ void CGovernanceManager::AddGovernanceObject(CGovernanceObject& govobj, CConnman
     CheckOrphanVotes(govobj, connman);
 
     // SEND NOTIFICATION TO SCRIPT/ZMQ
-    GetMainSignals().NotifyGovernanceObject(std::make_shared<const CGovernanceObject>(govobj));
+    GetMainSignals().NotifyGovernanceObject(std::make_shared<const Governance::Object>(govobj.Object()));
 }
 
 void CGovernanceManager::UpdateCachesAndClean()