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Create asset tx

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This commit is contained in:
jl777
2018-07-20 00:22:01 -11:00
parent 55d19b212e
commit dd94983fa2
2 changed files with 97 additions and 0 deletions
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95
src/cc/assets.cpp
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@@ -19,6 +19,7 @@
#include <cryptoconditions.h>
#include "../script/standard.h"
#include "../base58.h"
#include "../wallet.h"
// code rpc
@@ -166,6 +167,96 @@ bool Getscriptaddress(char *destaddr,const CScript &scriptPubKey)
return(false);
}
/*
vout.n-1: opreturn [EVAL_ASSETS] ['o']
vout.n-1: opreturn [EVAL_ASSETS] ['c'] [{"<assetname>":"<description>"}]
vout.n-1: opreturn [EVAL_ASSETS] ['t'] [assetid]
vout.n-1: opreturn [EVAL_ASSETS] ['x'] [assetid]
vout.n-1: opreturn [EVAL_ASSETS] ['b'] [assetid] [amount of asset required] [origpubkey]
vout.n-1: opreturn [EVAL_ASSETS] ['B'] [assetid] [remaining asset required] [origpubkey]
vout.n-1: opreturn [EVAL_ASSETS] ['s'] [assetid] [amount of native coin required] [origpubkey]
vout.n-1: opreturn [EVAL_ASSETS] ['S'] [assetid] [amount of coin still required] [origpubkey]
vout.n-1: opreturn [EVAL_ASSETS] ['e'] [assetid] [assetid2] [amount of asset2 required] [origpubkey]
vout.n-1: opreturn [EVAL_ASSETS] ['E'] [assetid vin0+1] [assetid vin2] [remaining asset2 required] [origpubkey]
*/
CScript EncodeCreateOpRet(uint8_t funcid,std::string name,std::string description)
{
CScript opret; uint8_t evalcode = EVAL_ASSETS;
opret << OP_RETURN << E_MARSHAL(ss << evalcode << funcid << name << description);
return(opret);
}
CScript EncodeOpRet(uint8_t funcid,uint256 assetid,uint256 assetid2,uint64_t price,std::vector<uint8_t> origpubkey)
{
CScript opret; uint8_t evalcode = EVAL_ASSETS;
switch ( funcid )
{
case 'o':
opret << OP_RETURN << E_MARSHAL(ss << evalcode << funcid);
break;
case 't': case 'x':
opret << OP_RETURN << E_MARSHAL(ss << evalcode << funcid << assetid);
break;
case 's': case 'b': case 'S': case 'B':
opret << OP_RETURN << E_MARSHAL(ss << evalcode << funcid << assetid << price << origpubkey);
break;
case 'E': case 'e':
opret << OP_RETURN << E_MARSHAL(ss << evalcode << funcid << assetid << assetid2 << price << origpubkey);
break;
default:
fprintf(stderr,"EncodeOpRet: illegal funcid.%02x\n",funcid);
opret << OP_RETURN;
break;
}
return(opret);
}
CC *MakeAssetCond(CPubKey pk)
{
std::vector<CC*> pks; uint8_t evalcode = EVAL_ASSETS;
pks.push_back(CCNewSecp256k1(pk));
CC *assetCC = CCNewEval(E_MARSHAL(ss << evalcode));
CC *Sig = CCNewThreshold(1, pks);
return CCNewThreshold(2, {assetCC, Sig});
}
CTxOut MakeAssetsVout(CAmount nValue,CPubKey pk)
{
CTxOut vout;
CC *payoutCond = MakeAssetCond(pk);
CTxOut(nValue,CCPubKey(payoutCond));
cc_free(payoutCond);
return(vout);
}
CMutableTransaction CreateAsset(CPubKey pk,uint64_t assetsupply,uint256 utxotxid,int32_t utxovout,std::string name,std::string description)
{
auto consensusBranchId = CurrentEpochBranchId(chainActive.Height() + 1, Params().GetConsensus());
const CKeyStore& keystore = *pwalletMain;
SignatureData sigdata; CMutableTransaction mtx; CTransaction vintx; uint256 hashBlock; uint64_t nValue,change,txfee=10000;
if ( GetTransaction(utxotxid,vintx,hashBlock,false) != 0 )
{
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));
if ( tx.vout[utxovout].nValue > assetsupply+txfee )
{
change = tx.vout[utxovout].nValue - (assetsupply+txfee);
mtx.vout.push_back(CTxOut(change, CScript() << pk << OP_CHECKSIG));
mtx.vout.push_back(CTxOut(0,EncodeCreateOpRet('c',name,description)));
}
if ( ProduceSignature(TransactionSignatureCreator(&keystore,&mtx,0,tx.vout[utxovout].nValue,SIGHASH_ALL),vintx.vout[utxovout].scriptPubKey,sigdata,consensusBranchId) != 0 )
{
UpdateTransaction(mtx,0,sigdata);
fprintf(stderr,"signed CreateAsset (%s -> %s)\n",name.ToString(),description.ToString());
} else fprintf(stderr,"signing error for CreateAsset\n");
}
}
return(mtx);
}
uint8_t DecodeOpRet(const CScript &scriptPubKey,uint256 &assetid,uint256 &assetid2,uint64_t &price,std::vector<uint8_t> &origpubkey)
{
std::vector<uint8_t> vopret; uint8_t funcid=0,*script;
@@ -194,6 +285,10 @@ uint8_t DecodeOpRet(const CScript &scriptPubKey,uint256 &assetid,uint256 &asseti
if ( E_UNMARSHAL(vopret, ss >> assetid; ss >> assetid2; ss >> price; ss >> origpubkey) != 0 )
return(funcid);
break;
default:
fprintf(stderr,"DecodeOpRet: illegal funcid.%02x\n",funcid);
funcid = 0;
break;
}
}
return(funcid);