Reorganize CC assets code

src/cc/CCutils.cpp

@@ -0,0 +1,133 @@
+/******************************************************************************
+ * Copyright © 2014-2018 The SuperNET Developers.                             *
+ *                                                                            *
+ * See the AUTHORS, DEVELOPER-AGREEMENT and LICENSE files at                  *
+ * the top-level directory of this distribution for the individual copyright  *
+ * holder information and the developer policies on copyright and licensing.  *
+ *                                                                            *
+ * Unless otherwise agreed in a custom licensing agreement, no part of the    *
+ * SuperNET software, including this file may be copied, modified, propagated *
+ * or distributed except according to the terms contained in the LICENSE file *
+ *                                                                            *
+ * Removal or modification of this copyright notice is prohibited.            *
+ *                                                                            *
+ ******************************************************************************/
+
+#include "CCinclude.h"
+
+/*
+ CCutils has low level functions that are universally useful for all contracts.
+ */
+
+CC* GetCryptoCondition(CScript const& scriptSig)
+{
+    auto pc = scriptSig.begin();
+    opcodetype opcode;
+    std::vector<unsigned char> ffbin;
+    if (scriptSig.GetOp(pc, opcode, ffbin))
+        return cc_readFulfillmentBinary((uint8_t*)ffbin.data(), ffbin.size()-1);
+}
+
+bool IsCCInput(CScript const& scriptSig)
+{
+    CC *cond;
+    if ( (cond= GetCryptoCondition(scriptSig)) == 0 )
+        return false;
+    cc_free(cond);
+    return true;
+}
+
+bool IsEvalInput(uint8_t evalcode,CScript const& scriptSig)
+{
+    CC *cond;
+    if (!(cond = GetCryptoCondition(scriptSig)))
+        return false;
+    // Recurse the CC tree to find asset condition
+    auto findEval = [&] (CC *cond, struct CCVisitor _) {
+        bool r = cc_typeId(cond) == CC_Eval && cond->codeLength == 1 && cond->code[0] == evalcode;
+        // false for a match, true for continue
+        return r ? 0 : 1;
+    };
+    CCVisitor visitor = {findEval, (uint8_t*)"", 0, NULL};
+    bool out =! cc_visit(cond, visitor);
+    cc_free(cond);
+    return out;
+}
+
+uint256 revuint256(uint256 txid)
+{
+    uint256 revtxid; int32_t i;
+    for (i=31; i>=0; i--)
+        ((uint8_t *)&revtxid)[31-i] = ((uint8_t *)&txid)[i];
+    return(revtxid);
+}
+
+char *uint256_str(char *dest,uint256 txid)
+{
+    int32_t i,j=0;
+    for (i=31; i>=0; i--)
+        sprintf(&dest[j++ * 2],"%02x",((uint8_t *)&txid)[i]);
+   return(dest);
+}
+
+uint256 Parseuint256(char *hexstr)
+{
+    uint256 txid; int32_t i; std::vector<unsigned char> txidbytes(ParseHex(hexstr));
+    for (i=31; i>=0; i--)
+        ((uint8_t *)&txid)[31-i] = ((uint8_t *)txidbytes.data())[i];
+    return(txid);
+}
+
+bool Getscriptaddress(char *destaddr,const CScript &scriptPubKey)
+{
+    CTxDestination address; txnouttype whichType;
+    if ( ExtractDestination(scriptPubKey,address) != 0 )
+    {
+        strcpy(destaddr,(char *)CBitcoinAddress(address).ToString().c_str());
+        return(true);
+    }
+    fprintf(stderr,"ExtractDestination failed\n");
+    return(false);
+}
+
+std::vector<uint8_t> Mypubkey()
+{
+    extern uint8_t NOTARY_PUBKEY33[33];
+    std::vector<uint8_t> pubkey; int32_t i; uint8_t *dest,*pubkey33;
+    pubkey33 = NOTARY_PUBKEY33;
+    pubkey.resize(33);
+    dest = pubkey.data();
+    for (i=0; i<33; i++)
+        dest[i] = pubkey33[i];
+    return(pubkey);
+}
+
+bool Myprivkey(uint8_t myprivkey[])
+{
+    char coinaddr[64]; std::string strAddress; char *dest; int32_t i,n; CBitcoinAddress address; CKeyID keyID; CKey vchSecret;
+    if ( Getscriptaddress(coinaddr,CScript() << Mypubkey() << OP_CHECKSIG) != 0 )
+    {
+        n = (int32_t)strlen(coinaddr);
+        strAddress.resize(n+1);
+        dest = (char *)strAddress.data();
+        for (i=0; i<n; i++)
+            dest[i] = coinaddr[i];
+        dest[i] = 0;
+        if ( address.SetString(strAddress) != 0 && address.GetKeyID(keyID) != 0 )
+        {
+#ifdef ENABLE_WALLET
+            if ( pwalletMain->GetKey(keyID,vchSecret) != 0 )
+            {
+                memcpy(myprivkey,vchSecret.begin(),32);
+                //for (i=0; i<32; i++)
+                //    fprintf(stderr,"%02x",myprivkey[i]);
+                //fprintf(stderr," found privkey!\n");
+                return(true);
+            }
+#endif
+        }
+    }
+    fprintf(stderr,"privkey for the -pubkey= address is not in the wallet, importprivkey!\n");
+    return(false);
+}
+