Separate script/standard

11 files changed, 324 insertions, 283 deletions

diff --git a/src/Makefile.am b/src/Makefile.am
index a3fdd3ee6a..c3e2f7ed82 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -100,6 +100,7 @@ BITCOIN_CORE_H = \
   rpcserver.h \
   script/interpreter.h \
   script/script.h \
+  script/standard.h \
   scriptutils.h \
   serialize.h \
   sync.h \
@@ -210,6 +211,7 @@ libbitcoin_common_a_SOURCES = \
   protocol.cpp \
   script/interpreter.cpp \
   script/script.cpp \
+  script/standard.cpp \
   scriptutils.cpp \
   $(BITCOIN_CORE_H)
 
diff --git a/src/bitcoin-tx.cpp b/src/bitcoin-tx.cpp
index 5f547bba83..3f12304bb2 100644
--- a/src/bitcoin-tx.cpp
+++ b/src/bitcoin-tx.cpp
@@ -8,6 +8,8 @@
 #include "core.h"
 #include "main.h"         // for MAX_BLOCK_SIZE
 #include "keystore.h"
+#include "script/script.h"
+#include "scriptutils.h"
 #include "ui_interface.h" // for _(...)
 #include "univalue/univalue.h"
 #include "core_io.h"
diff --git a/src/bloom.cpp b/src/bloom.cpp
index 07990beb15..cef74a3a54 100644
--- a/src/bloom.cpp
+++ b/src/bloom.cpp
@@ -5,7 +5,8 @@
 #include "bloom.h"
 
 #include "core.h"
-#include "scriptutils.h"
+#include "script/script.h"
+#include "script/standard.h"
 
 #include <math.h>
 #include <stdlib.h>
diff --git a/src/core_write.cpp b/src/core_write.cpp
index e816611809..62712b1ba0 100644
--- a/src/core_write.cpp
+++ b/src/core_write.cpp
@@ -4,7 +4,8 @@
 
 #include "core_io.h"
 #include "univalue/univalue.h"
-#include "scriptutils.h"
+#include "script/script.h"
+#include "script/standard.h"
 #include "core.h"
 #include "serialize.h"
 #include "util.h"
diff --git a/src/main.h b/src/main.h
index 1fc9b3ecf1..30cccab2f1 100644
--- a/src/main.h
+++ b/src/main.h
@@ -15,7 +15,8 @@
 #include "core.h"
 #include "net.h"
 #include "pow.h"
-#include "scriptutils.h"
+#include "script/script.h"
+#include "script/standard.h"
 #include "sync.h"
 #include "txmempool.h"
 #include "uint256.h"
diff --git a/src/rpcrawtransaction.cpp b/src/rpcrawtransaction.cpp
index a73641834d..901a16cd3c 100644
--- a/src/rpcrawtransaction.cpp
+++ b/src/rpcrawtransaction.cpp
@@ -11,6 +11,8 @@
 #include "main.h"
 #include "net.h"
 #include "rpcserver.h"
+#include "script/script.h"
+#include "script/standard.h"
 #include "uint256.h"
 #ifdef ENABLE_WALLET
 #include "wallet.h"
diff --git a/src/script/standard.cpp b/src/script/standard.cpp
new file mode 100644
index 0000000000..684edff4d2
--- /dev/null
+++ b/src/script/standard.cpp
@@ -0,0 +1,254 @@
+// Copyright (c) 2009-2010 Satoshi Nakamoto
+// Copyright (c) 2009-2013 The Bitcoin developers
+// Distributed under the MIT/X11 software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include "script/standard.h"
+
+#include "script/script.h"
+#include "util.h"
+
+#include <boost/foreach.hpp>
+
+using namespace std;
+
+typedef vector<unsigned char> valtype;
+
+const char* GetTxnOutputType(txnouttype t)
+{
+    switch (t)
+    {
+    case TX_NONSTANDARD: return "nonstandard";
+    case TX_PUBKEY: return "pubkey";
+    case TX_PUBKEYHASH: return "pubkeyhash";
+    case TX_SCRIPTHASH: return "scripthash";
+    case TX_MULTISIG: return "multisig";
+    case TX_NULL_DATA: return "nulldata";
+    }
+    return NULL;
+}
+
+//
+// Return public keys or hashes from scriptPubKey, for 'standard' transaction types.
+//
+bool Solver(const CScript& scriptPubKey, txnouttype& typeRet, vector<vector<unsigned char> >& vSolutionsRet)
+{
+    // Templates
+    static multimap<txnouttype, CScript> mTemplates;
+    if (mTemplates.empty())
+    {
+        // Standard tx, sender provides pubkey, receiver adds signature
+        mTemplates.insert(make_pair(TX_PUBKEY, CScript() << OP_PUBKEY << OP_CHECKSIG));
+
+        // Bitcoin address tx, sender provides hash of pubkey, receiver provides signature and pubkey
+        mTemplates.insert(make_pair(TX_PUBKEYHASH, CScript() << OP_DUP << OP_HASH160 << OP_PUBKEYHASH << OP_EQUALVERIFY << OP_CHECKSIG));
+
+        // Sender provides N pubkeys, receivers provides M signatures
+        mTemplates.insert(make_pair(TX_MULTISIG, CScript() << OP_SMALLINTEGER << OP_PUBKEYS << OP_SMALLINTEGER << OP_CHECKMULTISIG));
+
+        // Empty, provably prunable, data-carrying output
+        if (GetBoolArg("-datacarrier", true))
+            mTemplates.insert(make_pair(TX_NULL_DATA, CScript() << OP_RETURN << OP_SMALLDATA));
+        mTemplates.insert(make_pair(TX_NULL_DATA, CScript() << OP_RETURN));
+    }
+
+    // Shortcut for pay-to-script-hash, which are more constrained than the other types:
+    // it is always OP_HASH160 20 [20 byte hash] OP_EQUAL
+    if (scriptPubKey.IsPayToScriptHash())
+    {
+        typeRet = TX_SCRIPTHASH;
+        vector<unsigned char> hashBytes(scriptPubKey.begin()+2, scriptPubKey.begin()+22);
+        vSolutionsRet.push_back(hashBytes);
+        return true;
+    }
+
+    // Scan templates
+    const CScript& script1 = scriptPubKey;
+    BOOST_FOREACH(const PAIRTYPE(txnouttype, CScript)& tplate, mTemplates)
+    {
+        const CScript& script2 = tplate.second;
+        vSolutionsRet.clear();
+
+        opcodetype opcode1, opcode2;
+        vector<unsigned char> vch1, vch2;
+
+        // Compare
+        CScript::const_iterator pc1 = script1.begin();
+        CScript::const_iterator pc2 = script2.begin();
+        while (true)
+        {
+            if (pc1 == script1.end() && pc2 == script2.end())
+            {
+                // Found a match
+                typeRet = tplate.first;
+                if (typeRet == TX_MULTISIG)
+                {
+                    // Additional checks for TX_MULTISIG:
+                    unsigned char m = vSolutionsRet.front()[0];
+                    unsigned char n = vSolutionsRet.back()[0];
+                    if (m < 1 || n < 1 || m > n || vSolutionsRet.size()-2 != n)
+                        return false;
+                }
+                return true;
+            }
+            if (!script1.GetOp(pc1, opcode1, vch1))
+                break;
+            if (!script2.GetOp(pc2, opcode2, vch2))
+                break;
+
+            // Template matching opcodes:
+            if (opcode2 == OP_PUBKEYS)
+            {
+                while (vch1.size() >= 33 && vch1.size() <= 65)
+                {
+                    vSolutionsRet.push_back(vch1);
+                    if (!script1.GetOp(pc1, opcode1, vch1))
+                        break;
+                }
+                if (!script2.GetOp(pc2, opcode2, vch2))
+                    break;
+                // Normal situation is to fall through
+                // to other if/else statements
+            }
+
+            if (opcode2 == OP_PUBKEY)
+            {
+                if (vch1.size() < 33 || vch1.size() > 65)
+                    break;
+                vSolutionsRet.push_back(vch1);
+            }
+            else if (opcode2 == OP_PUBKEYHASH)
+            {
+                if (vch1.size() != sizeof(uint160))
+                    break;
+                vSolutionsRet.push_back(vch1);
+            }
+            else if (opcode2 == OP_SMALLINTEGER)
+            {   // Single-byte small integer pushed onto vSolutions
+                if (opcode1 == OP_0 ||
+                    (opcode1 >= OP_1 && opcode1 <= OP_16))
+                {
+                    char n = (char)CScript::DecodeOP_N(opcode1);
+                    vSolutionsRet.push_back(valtype(1, n));
+                }
+                else
+                    break;
+            }
+            else if (opcode2 == OP_SMALLDATA)
+            {
+                // small pushdata, <= MAX_OP_RETURN_RELAY bytes
+                if (vch1.size() > MAX_OP_RETURN_RELAY)
+                    break;
+            }
+            else if (opcode1 != opcode2 || vch1 != vch2)
+            {
+                // Others must match exactly
+                break;
+            }
+        }
+    }
+
+    vSolutionsRet.clear();
+    typeRet = TX_NONSTANDARD;
+    return false;
+}
+
+int ScriptSigArgsExpected(txnouttype t, const std::vector<std::vector<unsigned char> >& vSolutions)
+{
+    switch (t)
+    {
+    case TX_NONSTANDARD:
+    case TX_NULL_DATA:
+        return -1;
+    case TX_PUBKEY:
+        return 1;
+    case TX_PUBKEYHASH:
+        return 2;
+    case TX_MULTISIG:
+        if (vSolutions.size() < 1 || vSolutions[0].size() < 1)
+            return -1;
+        return vSolutions[0][0] + 1;
+    case TX_SCRIPTHASH:
+        return 1; // doesn't include args needed by the script
+    }
+    return -1;
+}
+
+bool IsStandard(const CScript& scriptPubKey, txnouttype& whichType)
+{
+    vector<valtype> vSolutions;
+    if (!Solver(scriptPubKey, whichType, vSolutions))
+        return false;
+
+    if (whichType == TX_MULTISIG)
+    {
+        unsigned char m = vSolutions.front()[0];
+        unsigned char n = vSolutions.back()[0];
+        // Support up to x-of-3 multisig txns as standard
+        if (n < 1 || n > 3)
+            return false;
+        if (m < 1 || m > n)
+            return false;
+    }
+
+    return whichType != TX_NONSTANDARD;
+}
+
+bool ExtractDestination(const CScript& scriptPubKey, CTxDestination& addressRet)
+{
+    vector<valtype> vSolutions;
+    txnouttype whichType;
+    if (!Solver(scriptPubKey, whichType, vSolutions))
+        return false;
+
+    if (whichType == TX_PUBKEY)
+    {
+        addressRet = CPubKey(vSolutions[0]).GetID();
+        return true;
+    }
+    else if (whichType == TX_PUBKEYHASH)
+    {
+        addressRet = CKeyID(uint160(vSolutions[0]));
+        return true;
+    }
+    else if (whichType == TX_SCRIPTHASH)
+    {
+        addressRet = CScriptID(uint160(vSolutions[0]));
+        return true;
+    }
+    // Multisig txns have more than one address...
+    return false;
+}
+
+bool ExtractDestinations(const CScript& scriptPubKey, txnouttype& typeRet, vector<CTxDestination>& addressRet, int& nRequiredRet)
+{
+    addressRet.clear();
+    typeRet = TX_NONSTANDARD;
+    vector<valtype> vSolutions;
+    if (!Solver(scriptPubKey, typeRet, vSolutions))
+        return false;
+    if (typeRet == TX_NULL_DATA){
+        // This is data, not addresses
+        return false;
+    }
+
+    if (typeRet == TX_MULTISIG)
+    {
+        nRequiredRet = vSolutions.front()[0];
+        for (unsigned int i = 1; i < vSolutions.size()-1; i++)
+        {
+            CTxDestination address = CPubKey(vSolutions[i]).GetID();
+            addressRet.push_back(address);
+        }
+    }
+    else
+    {
+        nRequiredRet = 1;
+        CTxDestination address;
+        if (!ExtractDestination(scriptPubKey, address))
+           return false;
+        addressRet.push_back(address);
+    }
+
+    return true;
+}
diff --git a/src/script/standard.h b/src/script/standard.h
new file mode 100644
index 0000000000..18092e879e
--- /dev/null
+++ b/src/script/standard.h
@@ -0,0 +1,56 @@
+// Copyright (c) 2009-2010 Satoshi Nakamoto
+// Copyright (c) 2009-2013 The Bitcoin developers
+// Distributed under the MIT/X11 software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#ifndef H_BITCOIN_SCRIPT_STANDARD
+#define H_BITCOIN_SCRIPT_STANDARD
+
+#include "script/script.h"
+#include "script/interpreter.h"
+
+#include <stdint.h>
+
+class CScript;
+
+static const unsigned int MAX_OP_RETURN_RELAY = 40;      // bytes
+
+// Mandatory script verification flags that all new blocks must comply with for
+// them to be valid. (but old blocks may not comply with) Currently just P2SH,
+// but in the future other flags may be added, such as a soft-fork to enforce
+// strict DER encoding.
+//
+// Failing one of these tests may trigger a DoS ban - see CheckInputs() for
+// details.
+static const unsigned int MANDATORY_SCRIPT_VERIFY_FLAGS = SCRIPT_VERIFY_P2SH;
+
+// Standard script verification flags that standard transactions will comply
+// with. However scripts violating these flags may still be present in valid
+// blocks and we must accept those blocks.
+static const unsigned int STANDARD_SCRIPT_VERIFY_FLAGS = MANDATORY_SCRIPT_VERIFY_FLAGS |
+                                                         SCRIPT_VERIFY_STRICTENC |
+                                                         SCRIPT_VERIFY_NULLDUMMY;
+
+// For convenience, standard but not mandatory verify flags.
+static const unsigned int STANDARD_NOT_MANDATORY_VERIFY_FLAGS = STANDARD_SCRIPT_VERIFY_FLAGS & ~MANDATORY_SCRIPT_VERIFY_FLAGS;
+
+enum txnouttype
+{
+    TX_NONSTANDARD,
+    // 'standard' transaction types:
+    TX_PUBKEY,
+    TX_PUBKEYHASH,
+    TX_SCRIPTHASH,
+    TX_MULTISIG,
+    TX_NULL_DATA,
+};
+
+const char* GetTxnOutputType(txnouttype t);
+
+bool Solver(const CScript& scriptPubKey, txnouttype& typeRet, std::vector<std::vector<unsigned char> >& vSolutionsRet);
+int ScriptSigArgsExpected(txnouttype t, const std::vector<std::vector<unsigned char> >& vSolutions);
+bool IsStandard(const CScript& scriptPubKey, txnouttype& whichType);
+bool ExtractDestination(const CScript& scriptPubKey, CTxDestination& addressRet);
+bool ExtractDestinations(const CScript& scriptPubKey, txnouttype& typeRet, std::vector<CTxDestination>& addressRet, int& nRequiredRet);
+
+#endif
diff --git a/src/scriptutils.cpp b/src/scriptutils.cpp
index fb3766ab15..cede11d6a7 100644
--- a/src/scriptutils.cpp
+++ b/src/scriptutils.cpp
@@ -17,146 +17,6 @@ using namespace std;
 
 typedef vector<unsigned char> valtype;
 
-const char* GetTxnOutputType(txnouttype t)
-{
-    switch (t)
-    {
-    case TX_NONSTANDARD: return "nonstandard";
-    case TX_PUBKEY: return "pubkey";
-    case TX_PUBKEYHASH: return "pubkeyhash";
-    case TX_SCRIPTHASH: return "scripthash";
-    case TX_MULTISIG: return "multisig";
-    case TX_NULL_DATA: return "nulldata";
-    }
-    return NULL;
-}
-
-//
-// Return public keys or hashes from scriptPubKey, for 'standard' transaction types.
-//
-bool Solver(const CScript& scriptPubKey, txnouttype& typeRet, vector<vector<unsigned char> >& vSolutionsRet)
-{
-    // Templates
-    static multimap<txnouttype, CScript> mTemplates;
-    if (mTemplates.empty())
-    {
-        // Standard tx, sender provides pubkey, receiver adds signature
-        mTemplates.insert(make_pair(TX_PUBKEY, CScript() << OP_PUBKEY << OP_CHECKSIG));
-
-        // Bitcoin address tx, sender provides hash of pubkey, receiver provides signature and pubkey
-        mTemplates.insert(make_pair(TX_PUBKEYHASH, CScript() << OP_DUP << OP_HASH160 << OP_PUBKEYHASH << OP_EQUALVERIFY << OP_CHECKSIG));
-
-        // Sender provides N pubkeys, receivers provides M signatures
-        mTemplates.insert(make_pair(TX_MULTISIG, CScript() << OP_SMALLINTEGER << OP_PUBKEYS << OP_SMALLINTEGER << OP_CHECKMULTISIG));
-
-        // Empty, provably prunable, data-carrying output
-        if (GetBoolArg("-datacarrier", true))
-            mTemplates.insert(make_pair(TX_NULL_DATA, CScript() << OP_RETURN << OP_SMALLDATA));
-        mTemplates.insert(make_pair(TX_NULL_DATA, CScript() << OP_RETURN));
-    }
-
-    // Shortcut for pay-to-script-hash, which are more constrained than the other types:
-    // it is always OP_HASH160 20 [20 byte hash] OP_EQUAL
-    if (scriptPubKey.IsPayToScriptHash())
-    {
-        typeRet = TX_SCRIPTHASH;
-        vector<unsigned char> hashBytes(scriptPubKey.begin()+2, scriptPubKey.begin()+22);
-        vSolutionsRet.push_back(hashBytes);
-        return true;
-    }
-
-    // Scan templates
-    const CScript& script1 = scriptPubKey;
-    BOOST_FOREACH(const PAIRTYPE(txnouttype, CScript)& tplate, mTemplates)
-    {
-        const CScript& script2 = tplate.second;
-        vSolutionsRet.clear();
-
-        opcodetype opcode1, opcode2;
-        vector<unsigned char> vch1, vch2;
-
-        // Compare
-        CScript::const_iterator pc1 = script1.begin();
-        CScript::const_iterator pc2 = script2.begin();
-        while (true)
-        {
-            if (pc1 == script1.end() && pc2 == script2.end())
-            {
-                // Found a match
-                typeRet = tplate.first;
-                if (typeRet == TX_MULTISIG)
-                {
-                    // Additional checks for TX_MULTISIG:
-                    unsigned char m = vSolutionsRet.front()[0];
-                    unsigned char n = vSolutionsRet.back()[0];
-                    if (m < 1 || n < 1 || m > n || vSolutionsRet.size()-2 != n)
-                        return false;
-                }
-                return true;
-            }
-            if (!script1.GetOp(pc1, opcode1, vch1))
-                break;
-            if (!script2.GetOp(pc2, opcode2, vch2))
-                break;
-
-            // Template matching opcodes:
-            if (opcode2 == OP_PUBKEYS)
-            {
-                while (vch1.size() >= 33 && vch1.size() <= 65)
-                {
-                    vSolutionsRet.push_back(vch1);
-                    if (!script1.GetOp(pc1, opcode1, vch1))
-                        break;
-                }
-                if (!script2.GetOp(pc2, opcode2, vch2))
-                    break;
-                // Normal situation is to fall through
-                // to other if/else statements
-            }
-
-            if (opcode2 == OP_PUBKEY)
-            {
-                if (vch1.size() < 33 || vch1.size() > 65)
-                    break;
-                vSolutionsRet.push_back(vch1);
-            }
-            else if (opcode2 == OP_PUBKEYHASH)
-            {
-                if (vch1.size() != sizeof(uint160))
-                    break;
-                vSolutionsRet.push_back(vch1);
-            }
-            else if (opcode2 == OP_SMALLINTEGER)
-            {   // Single-byte small integer pushed onto vSolutions
-                if (opcode1 == OP_0 ||
-                    (opcode1 >= OP_1 && opcode1 <= OP_16))
-                {
-                    char n = (char)CScript::DecodeOP_N(opcode1);
-                    vSolutionsRet.push_back(valtype(1, n));
-                }
-                else
-                    break;
-            }
-            else if (opcode2 == OP_SMALLDATA)
-            {
-                // small pushdata, <= MAX_OP_RETURN_RELAY bytes
-                if (vch1.size() > MAX_OP_RETURN_RELAY)
-                    break;
-            }
-            else if (opcode1 != opcode2 || vch1 != vch2)
-            {
-                // Others must match exactly
-                break;
-            }
-        }
-    }
-
-    vSolutionsRet.clear();
-    typeRet = TX_NONSTANDARD;
-    return false;
-}
-
-
 bool Sign1(const CKeyID& address, const CKeyStore& keystore, uint256 hash, int nHashType, CScript& scriptSigRet)
 {
     CKey key;
@@ -231,48 +91,6 @@ bool Solver(const CKeyStore& keystore, const CScript& scriptPubKey, uint256 hash
     return false;
 }
 
-int ScriptSigArgsExpected(txnouttype t, const std::vector<std::vector<unsigned char> >& vSolutions)
-{
-    switch (t)
-    {
-    case TX_NONSTANDARD:
-    case TX_NULL_DATA:
-        return -1;
-    case TX_PUBKEY:
-        return 1;
-    case TX_PUBKEYHASH:
-        return 2;
-    case TX_MULTISIG:
-        if (vSolutions.size() < 1 || vSolutions[0].size() < 1)
-            return -1;
-        return vSolutions[0][0] + 1;
-    case TX_SCRIPTHASH:
-        return 1; // doesn't include args needed by the script
-    }
-    return -1;
-}
-
-bool IsStandard(const CScript& scriptPubKey, txnouttype& whichType)
-{
-    vector<valtype> vSolutions;
-    if (!Solver(scriptPubKey, whichType, vSolutions))
-        return false;
-
-    if (whichType == TX_MULTISIG)
-    {
-        unsigned char m = vSolutions.front()[0];
-        unsigned char n = vSolutions.back()[0];
-        // Support up to x-of-3 multisig txns as standard
-        if (n < 1 || n > 3)
-            return false;
-        if (m < 1 || m > n)
-            return false;
-    }
-
-    return whichType != TX_NONSTANDARD;
-}
-
-
 unsigned int HaveKeys(const vector<valtype>& pubkeys, const CKeyStore& keystore)
 {
     unsigned int nResult = 0;
@@ -348,65 +166,6 @@ isminetype IsMine(const CKeyStore &keystore, const CScript& scriptPubKey)
     return ISMINE_NO;
 }
 
-bool ExtractDestination(const CScript& scriptPubKey, CTxDestination& addressRet)
-{
-    vector<valtype> vSolutions;
-    txnouttype whichType;
-    if (!Solver(scriptPubKey, whichType, vSolutions))
-        return false;
-
-    if (whichType == TX_PUBKEY)
-    {
-        addressRet = CPubKey(vSolutions[0]).GetID();
-        return true;
-    }
-    else if (whichType == TX_PUBKEYHASH)
-    {
-        addressRet = CKeyID(uint160(vSolutions[0]));
-        return true;
-    }
-    else if (whichType == TX_SCRIPTHASH)
-    {
-        addressRet = CScriptID(uint160(vSolutions[0]));
-        return true;
-    }
-    // Multisig txns have more than one address...
-    return false;
-}
-
-bool ExtractDestinations(const CScript& scriptPubKey, txnouttype& typeRet, vector<CTxDestination>& addressRet, int& nRequiredRet)
-{
-    addressRet.clear();
-    typeRet = TX_NONSTANDARD;
-    vector<valtype> vSolutions;
-    if (!Solver(scriptPubKey, typeRet, vSolutions))
-        return false;
-    if (typeRet == TX_NULL_DATA){
-        // This is data, not addresses
-        return false;
-    }
-
-    if (typeRet == TX_MULTISIG)
-    {
-        nRequiredRet = vSolutions.front()[0];
-        for (unsigned int i = 1; i < vSolutions.size()-1; i++)
-        {
-            CTxDestination address = CPubKey(vSolutions[i]).GetID();
-            addressRet.push_back(address);
-        }
-    }
-    else
-    {
-        nRequiredRet = 1;
-        CTxDestination address;
-        if (!ExtractDestination(scriptPubKey, address))
-           return false;
-        addressRet.push_back(address);
-    }
-
-    return true;
-}
-
 class CAffectedKeysVisitor : public boost::static_visitor<void> {
 private:
     const CKeyStore &keystore;
diff --git a/src/scriptutils.h b/src/scriptutils.h
index 1df95b1fa0..7ea2c9e6a5 100644
--- a/src/scriptutils.h
+++ b/src/scriptutils.h
@@ -9,6 +9,7 @@
 #include "key.h"
 #include "script/script.h"
 #include "script/interpreter.h"
+#include "script/standard.h"
 
 #include <stdexcept>
 #include <stdint.h>
@@ -19,8 +20,6 @@ class CKeyStore;
 class CTransaction;
 struct CMutableTransaction;
 
-static const unsigned int MAX_OP_RETURN_RELAY = 40;      // bytes
-
 /** IsMine() return codes */
 enum isminetype
 {
@@ -32,38 +31,6 @@ enum isminetype
 /** used for bitflags of isminetype */
 typedef uint8_t isminefilter;
 
-// Mandatory script verification flags that all new blocks must comply with for
-// them to be valid. (but old blocks may not comply with) Currently just P2SH,
-// but in the future other flags may be added, such as a soft-fork to enforce
-// strict DER encoding.
-//
-// Failing one of these tests may trigger a DoS ban - see CheckInputs() for
-// details.
-static const unsigned int MANDATORY_SCRIPT_VERIFY_FLAGS = SCRIPT_VERIFY_P2SH;
-
-// Standard script verification flags that standard transactions will comply
-// with. However scripts violating these flags may still be present in valid
-// blocks and we must accept those blocks.
-static const unsigned int STANDARD_SCRIPT_VERIFY_FLAGS = MANDATORY_SCRIPT_VERIFY_FLAGS |
-                                                         SCRIPT_VERIFY_STRICTENC |
-                                                         SCRIPT_VERIFY_NULLDUMMY;
-
-// For convenience, standard but not mandatory verify flags.
-static const unsigned int STANDARD_NOT_MANDATORY_VERIFY_FLAGS = STANDARD_SCRIPT_VERIFY_FLAGS & ~MANDATORY_SCRIPT_VERIFY_FLAGS;
-
-enum txnouttype
-{
-    TX_NONSTANDARD,
-    // 'standard' transaction types:
-    TX_PUBKEY,
-    TX_PUBKEYHASH,
-    TX_SCRIPTHASH,
-    TX_MULTISIG,
-    TX_NULL_DATA,
-};
-
-const char* GetTxnOutputType(txnouttype t);
-
 /** Compact serializer for scripts.
  *
  *  It detects common cases and encodes them much more efficiently.
@@ -137,14 +104,9 @@ public:
     }
 };
 
-bool Solver(const CScript& scriptPubKey, txnouttype& typeRet, std::vector<std::vector<unsigned char> >& vSolutionsRet);
-int ScriptSigArgsExpected(txnouttype t, const std::vector<std::vector<unsigned char> >& vSolutions);
-bool IsStandard(const CScript& scriptPubKey, txnouttype& whichType);
 isminetype IsMine(const CKeyStore& keystore, const CScript& scriptPubKey);
 isminetype IsMine(const CKeyStore& keystore, const CTxDestination& dest);
 void ExtractAffectedKeys(const CKeyStore &keystore, const CScript& scriptPubKey, std::vector<CKeyID> &vKeys);
-bool ExtractDestination(const CScript& scriptPubKey, CTxDestination& addressRet);
-bool ExtractDestinations(const CScript& scriptPubKey, txnouttype& typeRet, std::vector<CTxDestination>& addressRet, int& nRequiredRet);
 bool SignSignature(const CKeyStore& keystore, const CScript& fromPubKey, CMutableTransaction& txTo, unsigned int nIn, int nHashType=SIGHASH_ALL);
 bool SignSignature(const CKeyStore& keystore, const CTransaction& txFrom, CMutableTransaction& txTo, unsigned int nIn, int nHashType=SIGHASH_ALL);
 
diff --git a/src/wallet.h b/src/wallet.h
index f8e1ebac12..6788986f88 100644
--- a/src/wallet.h
+++ b/src/wallet.h
@@ -11,6 +11,7 @@
 #include "key.h"
 #include "keystore.h"
 #include "main.h"
+#include "scriptutils.h"
 #include "ui_interface.h"
 #include "walletdb.h"