From a99ca25a5adfc520fff84bcf5156917cebda7d54 Mon Sep 17 00:00:00 2001
From: Scott Sadler <scott@alphanode.co>
Date: Sat, 17 Feb 2018 02:03:34 -0300
Subject: [PATCH] cryptocondition transaction is standard too

---
 src/script/script.cpp   | 23 +++++++++++++++++++++++
 src/script/script.h     |  2 ++
 src/script/standard.cpp |  7 +++++++
 src/script/standard.h   |  1 +
 4 files changed, 33 insertions(+)

diff --git a/src/script/script.cpp b/src/script/script.cpp
index 3cb3f855d..a78bd7e29 100644
--- a/src/script/script.cpp
+++ b/src/script/script.cpp
@@ -223,6 +223,29 @@ bool CScript::IsPayToScriptHash() const
             this->at(22) == OP_EQUAL);
 }
 
+bool CScript::IsPayToCryptoCondition() const
+{
+    const_iterator pc = this->begin();
+    vector<unsigned char> data;
+    int i;
+    while (pc < this->end())
+    {
+        opcodetype opcode;
+        if (!this->GetOp(pc, opcode, data))
+            return 0;
+        if (0 == i)
+            if (opcode != OP_PUSHDATA1)
+                return 0;
+        if (1 == i)
+            if (opcode != OP_CHECKCRYPTOCONDITION)
+                return 0;
+        if (i > 1)
+            return 0;
+        i++;
+    }
+    return 1;
+}
+
 bool CScript::IsPushOnly() const
 {
     const_iterator pc = begin();
diff --git a/src/script/script.h b/src/script/script.h
index 584fefac1..800289a15 100644
--- a/src/script/script.h
+++ b/src/script/script.h
@@ -176,6 +176,7 @@ enum opcodetype
     OP_PUBKEYS = 0xfb,
     OP_PUBKEYHASH = 0xfd,
     OP_PUBKEY = 0xfe,
+    OP_CRYPTOCONDITION = 0xfc,
 
     OP_INVALIDOPCODE = 0xff,
 };
@@ -563,6 +564,7 @@ public:
     unsigned int GetSigOpCount(const CScript& scriptSig) const;
 
     bool IsPayToScriptHash() const;
+    bool IsPayToCryptoCondition() const;
 
     /** Called by IsStandardTx and P2SH/BIP62 VerifyScript (which makes it consensus-critical). */
     bool IsPushOnly() const;
diff --git a/src/script/standard.cpp b/src/script/standard.cpp
index 71838853d..c304840f4 100644
--- a/src/script/standard.cpp
+++ b/src/script/standard.cpp
@@ -68,6 +68,13 @@ bool Solver(const CScript& scriptPubKey, txnouttype& typeRet, vector<vector<unsi
         return true;
     }
 
+    // Shortcut for pay-to-crypto-condition
+    if (scriptPubKey.IsPayToCryptoCondition()) {
+        typeRet = TX_CRYPTOCONDITION;
+        //vSolutionsRet.push_back("hello there");
+        return true;
+    }
+
     // Scan templates
     const CScript& script1 = scriptPubKey;
     BOOST_FOREACH(const PAIRTYPE(txnouttype, CScript)& tplate, mTemplates)
diff --git a/src/script/standard.h b/src/script/standard.h
index 29c560f5a..475cbb072 100644
--- a/src/script/standard.h
+++ b/src/script/standard.h
@@ -65,6 +65,7 @@ enum txnouttype
     TX_PUBKEYHASH,
     TX_SCRIPTHASH,
     TX_MULTISIG,
+    TX_CRYPTOCONDITION,
     TX_NULL_DATA,
 };