X-Git-Url: https://git.novaco.in/?a=blobdiff_plain;f=src%2Fscript.h;h=502bce1e54f1d5cf18b2580894a2a7e025af696a;hb=58ac600b2c94f12309fc5e18933891590dc1eb4c;hp=22a6020dcee1c63c90b975ef168876b91a976b25;hpb=223b6f1ba4819e9a146e7aa451d546726d0bc714;p=novacoin.git

diff --git a/src/script.h b/src/script.h
index 22a6020..502bce1 100644
--- a/src/script.h
+++ b/src/script.h
@@ -1,14 +1,18 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
+// Copyright (c) 2011 The Bitcoin developers
 // Distributed under the MIT/X11 software license, see the accompanying
-// file license.txt or http://www.opensource.org/licenses/mit-license.php.
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
 #ifndef H_BITCOIN_SCRIPT
 #define H_BITCOIN_SCRIPT
 
 #include "base58.h"
+#include "keystore.h"
 
 #include <string>
 #include <vector>
 
+#include <boost/foreach.hpp>
+
 class CTransaction;
 
 enum
@@ -398,7 +402,8 @@ public:
     }
 
 
-    explicit CScript(char b)           { operator<<(b); }
+    //explicit CScript(char b) is not portable.  Use 'signed char' or 'unsigned char'.
+    explicit CScript(signed char b)    { operator<<(b); }
     explicit CScript(short b)          { operator<<(b); }
     explicit CScript(int b)            { operator<<(b); }
     explicit CScript(long b)           { operator<<(b); }
@@ -415,7 +420,8 @@ public:
     explicit CScript(const std::vector<unsigned char>& b) { operator<<(b); }
 
 
-    CScript& operator<<(char b)           { return push_int64(b); }
+    //CScript& operator<<(char b) is not portable.  Use 'signed char' or 'unsigned char'.
+    CScript& operator<<(signed char b)    { return push_int64(b); }
     CScript& operator<<(short b)          { return push_int64(b); }
     CScript& operator<<(int b)            { return push_int64(b); }
     CScript& operator<<(long b)           { return push_int64(b); }
@@ -485,7 +491,7 @@ public:
     {
         // I'm not sure if this should push the script or concatenate scripts.
         // If there's ever a use for pushing a script onto a script, delete this member fn
-        assert(("warning: pushing a CScript onto a CScript with << is probably not intended, use + to concatenate", false));
+        assert(!"warning: pushing a CScript onto a CScript with << is probably not intended, use + to concatenate");
         return *this;
     }
 
@@ -570,6 +576,14 @@ public:
         return true;
     }
 
+    // Encode/decode small integers:
+    static int DecodeOP_N(opcodetype opcode)
+    {
+        if (opcode == OP_0)
+            return 0;
+        assert(opcode >= OP_1 && opcode <= OP_16);
+        return (int)opcode - (int)(OP_1 - 1);
+    }
 
     void FindAndDelete(const CScript& b)
     {
@@ -584,25 +598,28 @@ public:
         }
         while (GetOp(pc, opcode));
     }
-
-
-    int GetSigOpCount() const
+    int Find(opcodetype op) const
     {
-        int n = 0;
-        const_iterator pc = begin();
-        while (pc < end())
-        {
-            opcodetype opcode;
-            if (!GetOp(pc, opcode))
-                break;
-            if (opcode == OP_CHECKSIG || opcode == OP_CHECKSIGVERIFY)
-                n++;
-            else if (opcode == OP_CHECKMULTISIG || opcode == OP_CHECKMULTISIGVERIFY)
-                n += 20;
-        }
-        return n;
+        int nFound = 0;
+        opcodetype opcode;
+        for (const_iterator pc = begin(); pc != end() && GetOp(pc, opcode);)
+            if (opcode == op)
+                ++nFound;
+        return nFound;
     }
 
+    // Pre-version-0.6, Bitcoin always counted CHECKMULTISIGs
+    // as 20 sigops. With pay-to-script-hash, that changed:
+    // CHECKMULTISIGs serialized in scriptSigs are
+    // counted more accurately, assuming they are of the form
+    //  ... OP_N CHECKMULTISIG ...
+    int GetSigOpCount(bool fAccurate=false) const;
+
+    // Accurately count sigOps, including sigOps in
+    // pay-to-script-hash transactions:
+    int GetSigOpCount(const CScript& scriptSig) const;
+
+    bool IsPayToScriptHash() const;
 
     bool IsPushOnly() const
     {
@@ -621,7 +638,7 @@ public:
     }
 
 
-    uint160 GetBitcoinAddressHash160() const
+    CBitcoinAddress GetBitcoinAddress() const
     {
         opcodetype opcode;
         std::vector<unsigned char> vch;
@@ -633,36 +650,18 @@ public:
         if (!GetOp(pc, opcode, vch) || opcode != OP_EQUALVERIFY) return 0;
         if (!GetOp(pc, opcode, vch) || opcode != OP_CHECKSIG) return 0;
         if (pc != end()) return 0;
-        return hash160;
-    }
-
-    std::string GetBitcoinAddress() const
-    {
-        uint160 hash160 = GetBitcoinAddressHash160();
-        if (hash160 == 0)
-            return "";
-        return Hash160ToAddress(hash160);
+        return CBitcoinAddress(hash160);
     }
 
-    void SetBitcoinAddress(const uint160& hash160)
+    void SetBitcoinAddress(const CBitcoinAddress& address)
     {
         this->clear();
-        *this << OP_DUP << OP_HASH160 << hash160 << OP_EQUALVERIFY << OP_CHECKSIG;
+        *this << OP_DUP << OP_HASH160 << address.GetHash160() << OP_EQUALVERIFY << OP_CHECKSIG;
     }
 
     void SetBitcoinAddress(const std::vector<unsigned char>& vchPubKey)
     {
-        SetBitcoinAddress(Hash160(vchPubKey));
-    }
-
-    bool SetBitcoinAddress(const std::string& strAddress)
-    {
-        this->clear();
-        uint160 hash160;
-        if (!AddressToHash160(strAddress, hash160))
-            return false;
-        SetBitcoinAddress(hash160);
-        return true;
+        SetBitcoinAddress(CBitcoinAddress(vchPubKey));
     }
 
 
@@ -706,13 +705,12 @@ public:
 
 
 
+bool EvalScript(std::vector<std::vector<unsigned char> >& stack, const CScript& script, const CTransaction& txTo, unsigned int nIn, int nHashType);
 
-uint256 SignatureHash(CScript scriptCode, const CTransaction& txTo, unsigned int nIn, int nHashType);
 bool IsStandard(const CScript& scriptPubKey);
-bool IsMine(const CScript& scriptPubKey);
-bool ExtractPubKey(const CScript& scriptPubKey, bool fMineOnly, std::vector<unsigned char>& vchPubKeyRet);
-bool ExtractHash160(const CScript& scriptPubKey, uint160& hash160Ret);
-bool SignSignature(const CTransaction& txFrom, CTransaction& txTo, unsigned int nIn, int nHashType=SIGHASH_ALL, CScript scriptPrereq=CScript());
-bool VerifySignature(const CTransaction& txFrom, const CTransaction& txTo, unsigned int nIn, int nHashType=0);
+bool IsMine(const CKeyStore& keystore, const CScript& scriptPubKey);
+bool ExtractAddress(const CScript& scriptPubKey, const CKeyStore* pkeystore, CBitcoinAddress& addressRet);
+bool SignSignature(const CKeyStore& keystore, const CTransaction& txFrom, CTransaction& txTo, unsigned int nIn, int nHashType=SIGHASH_ALL, CScript scriptPrereq=CScript());
+bool VerifySignature(const CTransaction& txFrom, const CTransaction& txTo, unsigned int nIn, bool fValidatePayToScriptHash, int nHashType);
 
 #endif