From 96accc73f067c7c95946e9932645dd821ef67f63 Mon Sep 17 00:00:00 2001
From: Andrew Chow <achow101-github@achow101.com>
Date: Fri, 5 Jul 2019 22:32:59 -0400
Subject: [PATCH] Add WALLET_FLAG_DESCRIPTORS

---
 src/wallet/rpcwallet.cpp | 2 ++
 src/wallet/wallet.h      | 4 +++-
 src/wallet/walletutil.h  | 3 +++
 3 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
index 46efb187931..ece872ef171 100644
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -2452,6 +2452,7 @@ static UniValue getwalletinfo(const JSONRPCRequest& request)
                             {RPCResult::Type::NUM, "duration", "elapsed seconds since scan start"},
                             {RPCResult::Type::NUM, "progress", "scanning progress percentage [0.0, 1.0]"},
                         }},
+                        {RPCResult::Type::BOOL, "descriptors", "whether this wallet uses descriptors for scriptPubKey management"},
                     }},
                 },
                 RPCExamples{
@@ -2505,6 +2506,7 @@ static UniValue getwalletinfo(const JSONRPCRequest& request)
     } else {
         obj.pushKV("scanning", false);
     }
+    obj.pushKV("descriptors", pwallet->IsWalletFlagSet(WALLET_FLAG_DESCRIPTORS));
     return obj;
 }
 
diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h
index 176c483572a..8d0a3578608 100644
--- a/src/wallet/wallet.h
+++ b/src/wallet/wallet.h
@@ -111,7 +111,8 @@ static constexpr uint64_t KNOWN_WALLET_FLAGS =
         WALLET_FLAG_AVOID_REUSE
     |   WALLET_FLAG_BLANK_WALLET
     |   WALLET_FLAG_KEY_ORIGIN_METADATA
-    |   WALLET_FLAG_DISABLE_PRIVATE_KEYS;
+    |   WALLET_FLAG_DISABLE_PRIVATE_KEYS
+    |   WALLET_FLAG_DESCRIPTORS;
 
 static constexpr uint64_t MUTABLE_WALLET_FLAGS =
         WALLET_FLAG_AVOID_REUSE;
@@ -121,6 +122,7 @@ static const std::map<std::string,WalletFlags> WALLET_FLAG_MAP{
     {"blank", WALLET_FLAG_BLANK_WALLET},
     {"key_origin_metadata", WALLET_FLAG_KEY_ORIGIN_METADATA},
     {"disable_private_keys", WALLET_FLAG_DISABLE_PRIVATE_KEYS},
+    {"descriptor_wallet", WALLET_FLAG_DESCRIPTORS},
 };
 
 extern const std::map<uint64_t,std::string> WALLET_FLAG_CAVEATS;
diff --git a/src/wallet/walletutil.h b/src/wallet/walletutil.h
index c91c9aca965..4f1f4c79ddc 100644
--- a/src/wallet/walletutil.h
+++ b/src/wallet/walletutil.h
@@ -55,6 +55,9 @@ enum WalletFlags : uint64_t {
     //! bitcoin from opening the wallet, thinking it was newly created, and
     //! then improperly reinitializing it.
     WALLET_FLAG_BLANK_WALLET = (1ULL << 33),
+
+    //! Indicate that this wallet supports DescriptorScriptPubKeyMan
+    WALLET_FLAG_DESCRIPTORS = (1ULL << 34),
 };
 
 //! Get the path of the wallet directory.