Separate script/standard

1 files changed, 56 insertions, 0 deletions

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