rpc: ParsePathBIP32 helper

src/rpc/util.cpp

@@ -20,6 +20,7 @@
 #include <tinyformat.h>
 #include <uint256.h>
 #include <univalue.h>
+#include <util/bip32.h>
 #include <util/check.h>
 #include <util/result.h>
 #include <util/strencodings.h>
@@ -1379,6 +1380,15 @@ std::vector<CScript> EvalDescriptorStringOrObject(const UniValue& scanobject, Fl
     return ret;
 }
 
+std::vector<uint32_t> ParsePathBIP32(const std::string& path)
+{
+    std::vector<uint32_t> out;
+    if (!ParseHDKeypath(path, out)) {
+        throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid BIP32 keypath");
+    }
+    return out;
+}
+
 /** Convert a vector of bilingual strings to a UniValue::VARR containing their original untranslated values. */
 [[nodiscard]] static UniValue BilingualStringsToUniValue(const std::vector<bilingual_str>& bilingual_strings)
 {

src/rpc/util.h

@@ -156,6 +156,9 @@ std::pair<int64_t, int64_t> ParseDescriptorRange(const UniValue& value);
 /** Evaluate a descriptor given as a string, or as a {"desc":...,"range":...} object, with default range of 1000. */
 std::vector<CScript> EvalDescriptorStringOrObject(const UniValue& scanobject, FlatSigningProvider& provider, bool expand_priv = false);
 
+//! Parse BIP32 path
+std::vector<uint32_t> ParsePathBIP32(const std::string& path);
+
 /**
  * Serializing JSON objects depends on the outer type. Only arrays and
  * dictionaries can be nested in json. The top-level outer type is "NONE".