Persist Orchard action index/IVK mappings in CWalletTx

src/wallet/wallet.cpp

@@ -2872,7 +2872,9 @@ bool CWallet::UpdatedNoteData(const CWalletTx& wtxIn, CWalletTx& wtx)
         wtx.mapSaplingNoteData = tmp;
     }
 
-    return !unchangedSproutFlag || !unchangedSaplingFlag;
+    bool unchangedOrchardFlag = (wtxIn.mapOrchardActionData.empty() || wtxIn.mapOrchardActionData == wtx.mapOrchardActionData);
+
+    return !unchangedSproutFlag || !unchangedSaplingFlag || !unchangedOrchardFlag;
 }
 
 /**

src/wallet/wallet.h

@@ -581,8 +581,7 @@ public:
         }
 
         if (fOverwintered && nVersion >= ZIP225_TX_VERSION) {
-            // ORCHARD TODO: serialize/deserialize orchard bits using a pointer
+            READWRITE(mapOrchardActionData);
-            // to the Orchard wallet & the txid as referents
         }
 
         if (ser_action.ForRead())

src/zcash/address/orchard.cpp

@@ -7,10 +7,12 @@
 namespace libzcash {
 
 OrchardRawAddress OrchardIncomingViewingKey::Address(const diversifier_index_t& j) const {
+    assert(inner.get() != nullptr);
     return OrchardRawAddress(orchard_incoming_viewing_key_to_address(inner.get(), j.begin()));
 }
 
 std::optional<diversifier_index_t> OrchardIncomingViewingKey::DecryptDiversifier(const OrchardRawAddress& addr) const {
+    assert(inner.get() != nullptr);
     diversifier_index_t j_ret;
     if (orchard_incoming_viewing_key_decrypt_diversifier(inner.get(), addr.inner.get(), j_ret.begin())) {
         return j_ret;
@@ -20,10 +22,12 @@ std::optional<diversifier_index_t> OrchardIncomingViewingKey::DecryptDiversifier
 }
 
 OrchardIncomingViewingKey OrchardFullViewingKey::ToIncomingViewingKey() const {
+    assert(inner.get() != nullptr);
     return OrchardIncomingViewingKey(orchard_full_viewing_key_to_incoming_viewing_key(inner.get()));
 }
 
 OrchardIncomingViewingKey OrchardFullViewingKey::ToInternalIncomingViewingKey() const {
+    assert(inner.get() != nullptr);
     return OrchardIncomingViewingKey(orchard_full_viewing_key_to_internal_incoming_viewing_key(inner.get()));
 }
 

src/zcash/address/orchard.hpp

@@ -97,17 +97,17 @@ class OrchardIncomingViewingKey
 private:
     std::unique_ptr<OrchardIncomingViewingKeyPtr, decltype(&orchard_incoming_viewing_key_free)> inner;
 
-    OrchardIncomingViewingKey() :
-        inner(nullptr, orchard_incoming_viewing_key_free) {}
-
     OrchardIncomingViewingKey(OrchardIncomingViewingKeyPtr* key) :
         inner(key, orchard_incoming_viewing_key_free) {}
 
     friend class OrchardFullViewingKey;
     friend class OrchardSpendingKey;
     friend class ::OrchardWallet;
-
 public:
+    // DO NOT USE - this is exposed for serialization purposes only.
+    OrchardIncomingViewingKey() :
+        inner(nullptr, orchard_incoming_viewing_key_free) {}
+
     OrchardIncomingViewingKey(OrchardIncomingViewingKey&& key) : inner(std::move(key.inner)) {}
 
     OrchardIncomingViewingKey(const OrchardIncomingViewingKey& key) :
@@ -139,15 +139,20 @@ public:
 
     friend bool operator==(const OrchardIncomingViewingKey& a, const OrchardIncomingViewingKey& b)
     {
+        assert(a.inner.get() != nullptr);
+        assert(b.inner.get() != nullptr);
         return orchard_incoming_viewing_key_eq(a.inner.get(), b.inner.get());
     }
 
     friend bool operator<(const OrchardIncomingViewingKey& c1, const OrchardIncomingViewingKey& c2) {
+        assert(c1.inner.get() != nullptr);
+        assert(c2.inner.get() != nullptr);
         return orchard_incoming_viewing_key_lt(c1.inner.get(), c2.inner.get());
     }
 
     template<typename Stream>
     void Serialize(Stream& s) const {
+        assert(inner.get() != nullptr);
         RustStream rs(s);
         if (!orchard_incoming_viewing_key_serialize(inner.get(), &rs, RustStream<Stream>::write_callback)) {
             throw std::ios_base::failure("Failed to serialize Orchard incoming viewing key");