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Tx creation helpers

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This commit is contained in:
jl777
2018-07-20 02:26:41 -11:00
parent 084a779ea6
commit 6353ee2a02
1 changed files with 35 additions and 39 deletions
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74
src/cc/assets.cpp
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@@ -246,17 +246,36 @@ std::string SignAssetTx(CMutableTransaction &mtx,uint64_t utxovalue,const CScrip
{
UpdateTransaction(mtx,0,sigdata);
std::string strHex = EncodeHexTx(mtx);
return(strHex);
if ( strHex.size() > 0 )
return(strHex);
} else fprintf(stderr,"signing error for CreateAsset\n");
#else
return(0);
#endif
}
std::string CompleteAssetTx(CMutableTransaction &mtx,CPubKey pk,uint64_t outvalue,uint64_t txfee,uint64_t utxovalue,const CScript scriptPubKey,CScript opret)
uint64_t StartAssetTx(CPubKey &pk,const CScript &scriptPubKey,uint64_t output,uint64_t txfee,std::vector<uint8_t> origpubkey,uint256 utxotxid,int32_t utxovout)
{
uint64_t change;
if ( utxovalue > outvalue+txfee )
CTransaction vintx; uint256 hashBlock; uint64_t nValue; int32_t i,n; uint8_t *pubkey33,*dest;
n = origpubkey.size();
dest = (uint8_t *)pk.begin();
pubkey33 = (uint8_t *)origpubkey.data();
for (i=0; i<n; i++)
dest[i] = pubkey33[i];
if ( GetTransaction(utxotxid,vintx,hashBlock,false) != 0 )
{
nValue = vintx.vout[utxovout].nValue;
scriptPubKey = vintx.vout[utxovout].scriptPubKey;
if ( scriptPubKey.IsPayToCryptoCondition() == 0 && nValue >= output+txfee )
return(nValue);
}
return(0);
}
std::string FinalizeAssetTx(CMutableTransaction &mtx,CPubKey pk,uint64_t outvalue,uint64_t txfee,uint64_t utxovalue,const CScript scriptPubKey,CScript opret)
{
std::string hex; uint64_t change;
if ( utxovalue >= outvalue+2*txfee )
{
change = utxovalue - (outvalue+txfee);
mtx.vout.push_back(CTxOut(change,CScript() << ParseHex(HexStr(pk)) << OP_CHECKSIG));
@@ -265,50 +284,27 @@ std::string CompleteAssetTx(CMutableTransaction &mtx,CPubKey pk,uint64_t outvalu
return(SignAssetTx(mtx,utxovalue,scriptPubKey));
}
std::string CreateAsset(CPubKey pk,uint64_t assetsupply,uint256 utxotxid,int32_t utxovout,std::string name,std::string description)
std::string CreateAsset(std::vector<uint8_t> origpubkey,uint64_t assetsupply,uint256 utxotxid,int32_t utxovout,std::string name,std::string description)
{
std::string hex; CMutableTransaction mtx; CTransaction vintx; uint256 hashBlock; uint64_t nValue,txfee=10000;
if ( GetTransaction(utxotxid,vintx,hashBlock,false) != 0 )
CMutableTransaction mtx; CPubKey pk; const CScript scriptPubKey; uint64_t utxovalue,txfee=10000;
if ( (utxovalue= StartAssetTx(pk,scriptPubKey,assetsupply,txfee,origpubkey,utxotxid,utxovout)) != 0 )
{
nValue = vintx.vout[utxovout].nValue;
if ( vintx.vout[utxovout].scriptPubKey.IsPayToCryptoCondition() == 0 && vintx.vout[utxovout].nValue >= assetsupply+txfee )
{
mtx.vin.push_back(CTxIn(utxotxid,utxovout,CScript()));
mtx.vout.push_back(MakeAssetsVout(assetsupply,pk));
hex = CompleteAssetTx(mtx,pk,assetsupply,txfee,nValue,vintx.vout[utxovout].scriptPubKey,EncodeCreateOpRet('c',name,description));
if ( hex.size() > 0 )
{
fprintf(stderr,"signed CreateAsset (%s -> %s) %s\n",name.c_str(),description.c_str(),hex.c_str());
return(hex);
}
}
mtx.vin.push_back(CTxIn(utxotxid,utxovout,CScript()));
mtx.vout.push_back(MakeAssetsVout(assetsupply,pk));
return(FinalizeAssetTx(mtx,pk,assetsupply,txfee,utxovalue,scriptPubKey,EncodeCreateOpRet('c',name,description)));
}
return(0);
}
std::string CreateAssetTransfer(uint256 assetid,std::vector<uint8_t> origpubkey,uint256 utxotxid,int32_t utxovout)
{
std::string hex; CMutableTransaction mtx; CPubKey pk; CTransaction vintx; uint256 hashBlock; uint64_t nValue,change,txfee=10000; int32_t i,n; uint8_t *pubkey33,*dest;
n = origpubkey.size();
//pk.resize(n);
dest = (uint8_t *)pk.begin();
pubkey33 = (uint8_t *)origpubkey.data();
for (i=0; i<n; i++)
dest[i] = pubkey33[i];
if ( GetTransaction(utxotxid,vintx,hashBlock,false) != 0 )
CMutableTransaction mtx; CPubKey pk; const CScript scriptPubKey; uint64_t utxovalue,txfee=10000;
if ( (utxovalue= StartAssetTx(pk,scriptPubKey,0,txfee,origpubkey,utxotxid,utxovout)) != 0 )
{
nValue = vintx.vout[utxovout].nValue;
if ( vintx.vout[utxovout].scriptPubKey.IsPayToCryptoCondition() == 0 && vintx.vout[utxovout].nValue >= txfee )
{
//vin.1 .. vin.n-1: valid CC outputs
//vout.0 to n-2: assetoshis output to CC
hex = CompleteAssetTx(mtx,pk,0,txfee,nValue,vintx.vout[utxovout].scriptPubKey,EncodeOpRet('t',assetid,zeroid,0,origpubkey));
if ( hex.size() > 0 )
{
fprintf(stderr,"signed CreateAssetTransfer %s\n",hex.c_str());
return(hex);
}
}
mtx.vin.push_back(CTxIn(utxotxid,utxovout,CScript()));
//vin.1 .. vin.n-1: valid CC outputs
//vout.0 to n-2: assetoshis output to CC
return(FinalizeAssetTx(mtx,pk,0,txfee,utxovalue,scriptPubKey,EncodeOpRet('t',assetid,zeroid,0,origpubkey)));
}
return(0);
}