1 files changed, 51 insertions, 5 deletions

diff --git a/src/script/standard.cpp b/src/script/standard.cpp
index 760a5305e5..f57f1f61b4 100644
--- a/src/script/standard.cpp
+++ b/src/script/standard.cpp
@@ -30,13 +30,11 @@ const char* GetTxnOutputType(txnouttype t)
     case TX_NULL_DATA: return "nulldata";
     case TX_WITNESS_V0_KEYHASH: return "witness_v0_keyhash";
     case TX_WITNESS_V0_SCRIPTHASH: return "witness_v0_scripthash";
+    case TX_WITNESS_UNKNOWN: return "witness_unknown";
     }
-    return NULL;
+    return nullptr;
 }
 
-/**
- * Return public keys or hashes from scriptPubKey, for 'standard' transaction types.
- */
 bool Solver(const CScript& scriptPubKey, txnouttype& typeRet, std::vector<std::vector<unsigned char> >& vSolutionsRet)
 {
     // Templates
@@ -78,6 +76,12 @@ bool Solver(const CScript& scriptPubKey, txnouttype& typeRet, std::vector<std::v
             vSolutionsRet.push_back(witnessprogram);
             return true;
         }
+        if (witnessversion != 0) {
+            typeRet = TX_WITNESS_UNKNOWN;
+            vSolutionsRet.push_back(std::vector<unsigned char>{(unsigned char)witnessversion});
+            vSolutionsRet.push_back(std::move(witnessprogram));
+            return true;
+        }
         return false;
     }
 
@@ -201,6 +205,23 @@ bool ExtractDestination(const CScript& scriptPubKey, CTxDestination& addressRet)
     {
         addressRet = CScriptID(uint160(vSolutions[0]));
         return true;
+    } else if (whichType == TX_WITNESS_V0_KEYHASH) {
+        WitnessV0KeyHash hash;
+        std::copy(vSolutions[0].begin(), vSolutions[0].end(), hash.begin());
+        addressRet = hash;
+        return true;
+    } else if (whichType == TX_WITNESS_V0_SCRIPTHASH) {
+        WitnessV0ScriptHash hash;
+        std::copy(vSolutions[0].begin(), vSolutions[0].end(), hash.begin());
+        addressRet = hash;
+        return true;
+    } else if (whichType == TX_WITNESS_UNKNOWN) {
+        WitnessUnknown unk;
+        unk.version = vSolutions[0][0];
+        std::copy(vSolutions[1].begin(), vSolutions[1].end(), unk.program);
+        unk.length = vSolutions[1].size();
+        addressRet = unk;
+        return true;
     }
     // Multisig txns have more than one address...
     return false;
@@ -253,7 +274,7 @@ class CScriptVisitor : public boost::static_visitor<bool>
 private:
     CScript *script;
 public:
-    CScriptVisitor(CScript *scriptin) { script = scriptin; }
+    explicit CScriptVisitor(CScript *scriptin) { script = scriptin; }
 
     bool operator()(const CNoDestination &dest) const {
         script->clear();
@@ -271,6 +292,27 @@ public:
         *script << OP_HASH160 << ToByteVector(scriptID) << OP_EQUAL;
         return true;
     }
+
+    bool operator()(const WitnessV0KeyHash& id) const
+    {
+        script->clear();
+        *script << OP_0 << ToByteVector(id);
+        return true;
+    }
+
+    bool operator()(const WitnessV0ScriptHash& id) const
+    {
+        script->clear();
+        *script << OP_0 << ToByteVector(id);
+        return true;
+    }
+
+    bool operator()(const WitnessUnknown& id) const
+    {
+        script->clear();
+        *script << CScript::EncodeOP_N(id.version) << std::vector<unsigned char>(id.program, id.program + id.length);
+        return true;
+    }
 };
 } // namespace
 
@@ -320,3 +362,7 @@ CScript GetScriptForWitness(const CScript& redeemscript)
     ret << OP_0 << ToByteVector(hash);
     return ret;
 }
+
+bool IsValidDestination(const CTxDestination& dest) {
+    return dest.which() != 0;
+}