add rpc getblsctviewkey

mxaddict · Aug 9, 2024 · a9347aa · a9347aa
1 parent 8e14dba
commit a9347aa
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Showing 4 changed files with 44 additions and 0 deletions.
diff --git a/src/blsct/wallet/keyman.cpp b/src/blsct/wallet/keyman.cpp
@@ -458,6 +458,21 @@ blsct::PrivateKey KeyMan::GetMasterSeedKey() const
     return ret;
 }
 
+blsct::PrivateKey KeyMan::GetPrivateViewKey() const
+{
+    if (!IsHDEnabled())
+        throw std::runtime_error(strprintf("%s: the wallet has no HD enabled"));
+
+    auto viewId = m_hd_chain.view_id;
+
+    PrivateKey ret;
+
+    if (!GetKey(viewId, ret))
+        throw std::runtime_error(strprintf("%s: could not access the private view key", __func__));
+
+    return ret;
+}
+
 blsct::PrivateKey KeyMan::GetSpendingKey() const
 {
     if (!fSpendKeyDefined)

diff --git a/src/blsct/wallet/keyman.h b/src/blsct/wallet/keyman.h
@@ -135,6 +135,7 @@ class KeyMan : public Manager, public KeyRing
     CKeyID GetHashId(const blsct::PublicKey& blindingKey, const blsct::PublicKey& spendingKey) const;
     CTxDestination GetDestination(const CTxOut& txout) const;
     blsct::PrivateKey GetMasterSeedKey() const;
+    blsct::PrivateKey GetPrivateViewKey() const;
     blsct::PrivateKey GetSpendingKey() const;
     blsct::PrivateKey GetSpendingKeyForOutput(const CTxOut& out) const;
     blsct::PrivateKey GetSpendingKeyForOutput(const CTxOut& out, const CKeyID& id) const;

diff --git a/src/wallet/rpc/backup.cpp b/src/wallet/rpc/backup.cpp
@@ -712,6 +712,32 @@ RPCHelpMan getblsctseed()
     };
 }
 
+
+RPCHelpMan getblsctviewkey()
+{
+    return RPCHelpMan{
+        "getblsctviewkey",
+        "\nDumps the BLSCT wallet private view key, which can be used to observe the wallet history without being able to spend the transactions.\n"
+        "Note: This command is only compatible with BLSCT wallets.\n",
+        {},
+        RPCResult{
+            RPCResult::Type::STR, "viewkey", "The BLSCT wallet private view key"},
+        RPCExamples{HelpExampleCli("getblsctviewkey", "") + HelpExampleRpc("getblsctseed", "")},
+        [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue {
+            const std::shared_ptr<const CWallet> pwallet = GetWalletForJSONRPCRequest(request);
+            if (!pwallet) return UniValue::VNULL;
+
+            const CWallet& wallet = *pwallet;
+            const blsct::KeyMan& blsct_km = EnsureConstBlsctKeyMan(wallet);
+
+            auto seed = blsct_km.GetMasterSeedKey();
+
+            return seed.GetScalar().GetString();
+        },
+    };
+}
+
+
 RPCHelpMan dumpwallet()
 {
     return RPCHelpMan{"dumpwallet",

diff --git a/src/wallet/rpc/wallet.cpp b/src/wallet/rpc/wallet.cpp
@@ -828,6 +828,7 @@ RPCHelpMan walletdisplayaddress();
 
 // backup
 RPCHelpMan getblsctseed();
+RPCHelpMan getblsctviewkey();
 RPCHelpMan dumpprivkey();
 RPCHelpMan importprivkey();
 RPCHelpMan importaddress();
@@ -907,6 +908,7 @@ Span<const CRPCCommand> GetWalletRPCCommands()
         {"wallet", &getaddressinfo},
         {"wallet", &getbalance},
         {"wallet", &getblsctseed},
+        {"wallet", &getblsctviewkey},
         {"wallet", &getnewaddress},
         {"wallet", &getrawchangeaddress},
         {"wallet", &getreceivedbyaddress},