refactor: track every MnNetInfo entry in the unique property map

Currently this does nothing different since both MnNetInfo and CService
serialize the same (and we only store one entry) but will allow us to
swap with an extended addresses capable variant down the line.

Author: kwvg

src/evo/deterministicmns.cpp

@@ -470,11 +470,12 @@ void CDeterministicMNList::AddMN(const CDeterministicMNCPtr& dmn, bool fBumpTota
         throw(std::runtime_error(strprintf("%s: Can't add a masternode %s with a duplicate collateralOutpoint=%s", __func__,
                 dmn->proTxHash.ToString(), dmn->collateralOutpoint.ToStringShort())));
     }
-    if (!dmn->pdmnState->netInfo.IsEmpty() && !AddUniqueProperty(*dmn, dmn->pdmnState->netInfo)) {
-        mnUniquePropertyMap = mnUniquePropertyMapSaved;
-        throw(std::runtime_error(strprintf("%s: Can't add a masternode %s with a duplicate address=%s", __func__,
-                                           dmn->proTxHash.ToString(),
-                                           dmn->pdmnState->netInfo.GetPrimary().ToStringAddrPort())));
+    for (const CService& entry : dmn->pdmnState->netInfo.GetEntries()) {
+        if (!AddUniqueProperty(*dmn, entry)) {
+            mnUniquePropertyMap = mnUniquePropertyMapSaved;
+            throw(std::runtime_error(strprintf("%s: Can't add a masternode %s with a duplicate address=%s", __func__,
+                                               dmn->proTxHash.ToString(), entry.ToStringAddrPort())));
+        }
     }
     if (!AddUniqueProperty(*dmn, dmn->pdmnState->keyIDOwner)) {
         mnUniquePropertyMap = mnUniquePropertyMapSaved;
@@ -512,11 +513,28 @@ void CDeterministicMNList::UpdateMN(const CDeterministicMN& oldDmn, const std::s
     // Using this temporary map as a checkpoint to roll back to in case of any issues.
     decltype(mnUniquePropertyMap) mnUniquePropertyMapSaved = mnUniquePropertyMap;
 
-    if (!UpdateUniqueProperty(*dmn, oldState->netInfo, pdmnState->netInfo)) {
+    const auto updateNetInfo = [&]() {
+        if (oldState->netInfo != pdmnState->netInfo) {
+            // We track each individual entry in netInfo as opposed to netInfo itself (preventing us from
+            // using UpdateUniqueProperty()), so we need to successfully purge all old entries and insert
+            // new entries to successfully update.
+            for (const CService& old_entry : oldState->netInfo.GetEntries()) {
+                if (!DeleteUniqueProperty(*dmn, old_entry)) {
+                    return strprintf("internal error"); // This shouldn't be possible
+                }
+            }
+            for (const CService& new_entry : pdmnState->netInfo.GetEntries()) {
+                if (!AddUniqueProperty(*dmn, new_entry)) {
+                    return strprintf("duplicate (%s)", new_entry.ToStringAddrPort());
+                }
+            }
+        }
+        return strprintf("");
+    }();
+    if (!updateNetInfo.empty()) {
         mnUniquePropertyMap = mnUniquePropertyMapSaved;
-        throw(std::runtime_error(strprintf("%s: Can't update a masternode %s with a duplicate address=%s", __func__,
-                                           oldDmn.proTxHash.ToString(),
-                                           pdmnState->netInfo.GetPrimary().ToStringAddrPort())));
+        throw(std::runtime_error(strprintf("%s: Can't update masternode %s with addresses, reason=%s", __func__,
+                                           oldDmn.proTxHash.ToString(), updateNetInfo)));
     }
     if (!UpdateUniqueProperty(*dmn, oldState->keyIDOwner, pdmnState->keyIDOwner)) {
         mnUniquePropertyMap = mnUniquePropertyMapSaved;
@@ -573,10 +591,12 @@ void CDeterministicMNList::RemoveMN(const uint256& proTxHash)
         throw(std::runtime_error(strprintf("%s: Can't delete a masternode %s with a collateralOutpoint=%s", __func__,
                 proTxHash.ToString(), dmn->collateralOutpoint.ToStringShort())));
     }
-    if (!dmn->pdmnState->netInfo.IsEmpty() && !DeleteUniqueProperty(*dmn, dmn->pdmnState->netInfo)) {
-        mnUniquePropertyMap = mnUniquePropertyMapSaved;
-        throw(std::runtime_error(strprintf("%s: Can't delete a masternode %s with a address=%s", __func__,
-                                           proTxHash.ToString(), dmn->pdmnState->netInfo.GetPrimary().ToStringAddrPort())));
+    for (const CService& entry : dmn->pdmnState->netInfo.GetEntries()) {
+        if (!DeleteUniqueProperty(*dmn, entry)) {
+            mnUniquePropertyMap = mnUniquePropertyMapSaved;
+            throw(std::runtime_error(strprintf("%s: Can't delete a masternode %s with an address=%s", __func__,
+                                               proTxHash.ToString(), entry.ToStringAddrPort())));
+        }
     }
     if (!DeleteUniqueProperty(*dmn, dmn->pdmnState->keyIDOwner)) {
         mnUniquePropertyMap = mnUniquePropertyMapSaved;
@@ -791,8 +811,10 @@ bool CDeterministicMNManager::BuildNewListFromBlock(const CBlock& block, gsl::no
                 }
             }
 
-            if (newList.HasUniqueProperty(proTx.netInfo)) {
-                return state.Invalid(BlockValidationResult::BLOCK_CONSENSUS, "bad-protx-dup-addr");
+            for (const CService& entry : proTx.netInfo.GetEntries()) {
+                if (newList.HasUniqueProperty(entry)) {
+                    return state.Invalid(BlockValidationResult::BLOCK_CONSENSUS, "bad-protx-dup-netinfo-entry");
+                }
             }
             if (newList.HasUniqueProperty(proTx.keyIDOwner) || newList.HasUniqueProperty(proTx.pubKeyOperator)) {
                 return state.Invalid(BlockValidationResult::BLOCK_CONSENSUS, "bad-protx-dup-key");
@@ -820,9 +842,11 @@ bool CDeterministicMNManager::BuildNewListFromBlock(const CBlock& block, gsl::no
                 return state.Invalid(BlockValidationResult::BLOCK_CONSENSUS, "bad-protx-payload");
             }
 
-            if (newList.HasUniqueProperty(opt_proTx->netInfo) &&
-                newList.GetUniquePropertyMN(opt_proTx->netInfo)->proTxHash != opt_proTx->proTxHash) {
-                return state.Invalid(BlockValidationResult::BLOCK_CONSENSUS, "bad-protx-dup-addr");
+            for (const CService& entry : opt_proTx->netInfo.GetEntries()) {
+                if (newList.HasUniqueProperty(entry) &&
+                    newList.GetUniquePropertyMN(entry)->proTxHash != opt_proTx->proTxHash) {
+                    return state.Invalid(BlockValidationResult::BLOCK_CONSENSUS, "bad-protx-dup-netinfo-entry");
+                }
             }
 
             auto dmn = newList.GetMN(opt_proTx->proTxHash);
@@ -1349,9 +1373,11 @@ bool CheckProRegTx(CDeterministicMNManager& dmnman, const CTransaction& tx, gsl:
         auto mnList = dmnman.GetListForBlock(pindexPrev);
 
         // only allow reusing of addresses when it's for the same collateral (which replaces the old MN)
-        if (mnList.HasUniqueProperty(opt_ptx->netInfo) &&
-            mnList.GetUniquePropertyMN(opt_ptx->netInfo)->collateralOutpoint != collateralOutpoint) {
-            return state.Invalid(TxValidationResult::TX_BAD_SPECIAL, "bad-protx-dup-addr");
+        for (const CService& entry : opt_ptx->netInfo.GetEntries()) {
+            if (mnList.HasUniqueProperty(entry) &&
+                mnList.GetUniquePropertyMN(entry)->collateralOutpoint != collateralOutpoint) {
+                return state.Invalid(TxValidationResult::TX_BAD_SPECIAL, "bad-protx-dup-netinfo-entry");
+            }
         }
 
         // never allow duplicate keys, even if this ProTx would replace an existing MN
@@ -1420,9 +1446,10 @@ bool CheckProUpServTx(CDeterministicMNManager& dmnman, const CTransaction& tx, g
     }
 
     // don't allow updating to addresses already used by other MNs
-    if (mnList.HasUniqueProperty(opt_ptx->netInfo) &&
-        mnList.GetUniquePropertyMN(opt_ptx->netInfo)->proTxHash != opt_ptx->proTxHash) {
-        return state.Invalid(TxValidationResult::TX_BAD_SPECIAL, "bad-protx-dup-addr");
+    for (const CService& entry : opt_ptx->netInfo.GetEntries()) {
+        if (mnList.HasUniqueProperty(entry) && mnList.GetUniquePropertyMN(entry)->proTxHash != opt_ptx->proTxHash) {
+            return state.Invalid(TxValidationResult::TX_BAD_SPECIAL, "bad-protx-dup-netinfo-entry");
+        }
     }
 
     // don't allow updating to platformNodeIds already used by other EvoNodes

src/evo/deterministicmns.h

@@ -394,8 +394,11 @@ class CDeterministicMNList
     template <typename T>
     [[nodiscard]] uint256 GetUniquePropertyHash(const T& v) const
     {
-        static_assert(!std::is_same_v<std::decay_t<T>, CBLSPublicKey>,
-                      "GetUniquePropertyHash cannot be templated against CBLSPublicKey");
+#define DMNL_NO_TEMPLATE(name) \
+    static_assert(!std::is_same_v<std::decay_t<T>, name>, "GetUniquePropertyHash cannot be templated against " #name)
+        DMNL_NO_TEMPLATE(CBLSPublicKey);
+        DMNL_NO_TEMPLATE(MnNetInfo);
+#undef DMNL_NO_TEMPLATE
         return ::SerializeHash(v);
     }
     template <typename T>