Disallow bech32m addresses for legacy wallet things

We don't want the legacy wallet to ever have bech32m addresses so don't
allow importing them. This includes addmultisigaddress as that is a
legacy wallet only RPC

Additionally, bech32m multisigs are not available yet, so disallow them
in createmultisig.

1 files changed, 9 insertions, 0 deletions

diff --git a/src/wallet/rpcdump.cpp b/src/wallet/rpcdump.cpp
index 4e9ba83ead..35649ab02c 100644
--- a/src/wallet/rpcdump.cpp
+++ b/src/wallet/rpcdump.cpp
@@ -286,6 +286,9 @@ RPCHelpMan importaddress()
             if (fP2SH) {
                 throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Cannot use the p2sh flag with an address - use a script instead");
             }
+            if (OutputTypeFromDestination(dest) == OutputType::BECH32M) {
+                throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Bech32m addresses cannot be imported into legacy wallets");
+            }
 
             pwallet->MarkDirty();
 
@@ -962,6 +965,9 @@ static UniValue ProcessImportLegacy(ImportData& import_data, std::map<CKeyID, CP
         if (!IsValidDestination(dest)) {
             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid address \"" + output + "\"");
         }
+        if (OutputTypeFromDestination(dest) == OutputType::BECH32M) {
+            throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Bech32m addresses cannot be imported into legacy wallets");
+        }
         script = GetScriptForDestination(dest);
     } else {
         if (!IsHex(output)) {
@@ -1086,6 +1092,9 @@ static UniValue ProcessImportDescriptor(ImportData& import_data, std::map<CKeyID
     if (!parsed_desc) {
         throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, error);
     }
+    if (parsed_desc->GetOutputType() == OutputType::BECH32M) {
+        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Bech32m descriptors cannot be imported into legacy wallets");
+    }
 
     have_solving_data = parsed_desc->IsSolvable();
     const bool watch_only = data.exists("watchonly") ? data["watchonly"].get_bool() : false;