Initial rewards CC
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jl777
224
src/cc/rewards.cpp
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224
src/cc/rewards.cpp
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/******************************************************************************
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* Copyright © 2014-2018 The SuperNET Developers. *
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* *
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* See the AUTHORS, DEVELOPER-AGREEMENT and LICENSE files at *
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* the top-level directory of this distribution for the individual copyright *
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* holder information and the developer policies on copyright and licensing. *
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* *
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* Unless otherwise agreed in a custom licensing agreement, no part of the *
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* SuperNET software, including this file may be copied, modified, propagated *
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* or distributed except according to the terms contained in the LICENSE file *
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* *
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* Removal or modification of this copyright notice is prohibited. *
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* *
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******************************************************************************/
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#include "CCinclude.h"
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/*
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*/
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#define EVAL_REWARDS 0xe5
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extern const char *RewardsCCaddr;
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extern char RewardsCChexstr[67];
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uint64_t RewardsCalc(uint64_t claim,uint256 txid)
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{
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uint64_t reward = 0;
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return(reward);
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}
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CC *MakeRewardsCond(CPubKey pk)
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{
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std::vector<CC*> pks; uint8_t evalcode = EVAL_REWARDS;
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pks.push_back(CCNewSecp256k1(pk));
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CC *rewardsCC = CCNewEval(E_MARSHAL(ss << evalcode));
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CC *Sig = CCNewThreshold(1, pks);
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return CCNewThreshold(2, {rewardsCC, Sig});
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}
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CTxOut MakeRewardsVout(CAmount nValue,CPubKey pk)
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{
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CTxOut vout;
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CC *payoutCond = MakeRewardsCond(pk);
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vout = CTxOut(nValue,CCPubKey(payoutCond));
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cc_free(payoutCond);
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return(vout);
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}
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uint64_t IsRewardsvout(const CTransaction& tx,int32_t v)
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{
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char destaddr[64];
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if ( tx.vout[v].scriptPubKey.IsPayToCryptoCondition() != 0 )
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{
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if ( Getscriptaddress(destaddr,tx.vout[v].scriptPubKey) > 0 && strcmp(destaddr,RewardsCCaddr) == 0 )
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return(tx.vout[v].nValue);
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}
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return(0);
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}
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bool RewardsExactAmounts(Eval* eval,const CTransaction &tx,int32_t minage,uint64_t txfee)
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{
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static uint256 zerohash;
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CTransaction vinTx; uint256 hashBlock,activehash; int32_t i,numvins,numvouts; uint64_t inputs=0,outputs=0,assetoshis;
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numvins = tx.vin.size();
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numvouts = tx.vout.size();
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for (i=0; i<numvins; i++)
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{
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if ( IsRewardsInput(tx.vin[i].scriptSig) != 0 )
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{
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if ( eval->GetTxUnconfirmed(tx.vin[i].prevout.hash,vinTx,hashBlock) == 0 )
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return eval->Invalid("always should find vin, but didnt");
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else
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{
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if ( hashBlock == zerohash )
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return eval->Invalid("cant rewards from mempool");
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if ( (assetoshis= IsRewardsvout(vinTx,tx.vin[i].prevout.n)) != 0 )
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inputs += assetoshis;
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}
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}
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}
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for (i=0; i<numvouts; i++)
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{
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//fprintf(stderr,"i.%d of numvouts.%d\n",i,numvouts);
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if ( (assetoshis= IsRewardsvout(tx,i)) != 0 )
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outputs += assetoshis;
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}
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if ( inputs != outputs+COIN+txfee )
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{
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fprintf(stderr,"inputs %llu vs outputs %llu\n",(long long)inputs,(long long)outputs);
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return eval->Invalid("mismatched inputs != outputs + COIN + txfee");
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}
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else return(true);
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}
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bool RewardsValidate(Eval* eval,const CTransaction &tx)
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{
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int32_t numvins,numvouts,preventCCvins,preventCCvouts,i;
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numvins = tx.vin.size();
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numvouts = tx.vout.size();
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preventCCvins = preventCCvouts = -1;
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if ( numvouts < 1 )
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return eval->Invalid("no vouts");
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else
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{
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for (i=0; i<numvins; i++)
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{
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if ( IsCCInput(tx.vin[0].scriptSig) == 0 )
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return eval->Invalid("illegal normal vini");
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}
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if ( RewardsExactAmounts(eval,tx,1,10000) == false )
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return false;
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else
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{
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preventCCvouts = 1;
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if ( IsRewardsvout(tx,0) != 0 )
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{
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preventCCvouts++;
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i = 1;
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} else i = 0;
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if ( tx.vout[i].nValue != COIN )
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return eval->Invalid("invalid rewards output");
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return(PreventCC(eval,tx,preventCCvins,numvins,preventCCvouts,numvouts));
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}
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}
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return(true);
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}
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bool ProcessRewards(Eval* eval, std::vector<uint8_t> paramsNull,const CTransaction &ctx, unsigned int nIn)
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{
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if ( paramsNull.size() != 0 ) // Don't expect params
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return eval->Invalid("Cannot have params");
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else if ( ctx.vout.size() == 0 )
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return eval->Invalid("no-vouts");
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if ( RewardsValidate(eval,ctx) != 0 )
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return(true);
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else return(false);
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}
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uint64_t AddRewardsInputs(CMutableTransaction &mtx,CPubKey pk,uint64_t total,int32_t maxinputs)
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{
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char coinaddr[64]; uint64_t nValue,price,totalinputs = 0; uint256 txid,hashBlock; std::vector<uint8_t> origpubkey; CTransaction vintx; int32_t n = 0;
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std::vector<std::pair<CAddressUnspentKey, CAddressUnspentValue> > unspentOutputs;
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GetCCaddress(EVAL_REWARDS,coinaddr,pk);
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SetCCunspents(unspentOutputs,coinaddr);
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for (std::vector<std::pair<CAddressUnspentKey, CAddressUnspentValue> >::const_iterator it=unspentOutputs.begin(); it!=unspentOutputs.end(); it++)
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{
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txid = it->first.txhash;
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if ( GetTransaction(txid,vintx,hashBlock,false) != 0 )
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{
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if ( (nValue= IsRewardsvout(vintx,(int32_t)it->first.index)) > 0 )
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{
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if ( total != 0 && maxinputs != 0 )
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mtx.vin.push_back(CTxIn(txid,(int32_t)it->first.index,CScript()));
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nValue = it->second.satoshis;
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totalinputs += nValue;
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n++;
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if ( (total > 0 && totalinputs >= total) || (maxinputs > 0 && n >= maxinputs) )
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break;
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}
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}
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}
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return(totalinputs);
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}
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// 0.834% every 60 days, min 100, capped at 0.834%
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std::string RewardsFund(uint64_t txfee,uint64_t funds,uint64_t APR,uint64_t minseconds,uint64_t maxseconds,uint64_t mindeposit)
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{
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CMutableTransaction mtx; CPubKey mypk,rewardspk; CScript opret;
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if ( txfee == 0 )
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txfee = 10000;
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mypk = pubkey2pk(Mypubkey());
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rewardspk = GetUnspendable(EVAL_REWARDS,0);
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if ( AddNormalinputs(mtx,mypk,funds+2*txfee,64) > 0 )
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{
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mtx.vout.push_back(MakeRewardsVout(funds,rewardspk));
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mtx.vout.push_back(CTxOut(APR,CScript() << ParseHex(HexStr(rewardspk)) << OP_CHECKSIG));
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mtx.vout.push_back(CTxOut(minseconds,CScript() << ParseHex(HexStr(rewardspk)) << OP_CHECKSIG));
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mtx.vout.push_back(CTxOut(maxseconds,CScript() << ParseHex(HexStr(rewardspk)) << OP_CHECKSIG));
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mtx.vout.push_back(CTxOut(mindeposit,CScript() << ParseHex(HexStr(rewardspk)) << OP_CHECKSIG));
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return(FinalizeCCTx(EVAL_REWARDS,mtx,mypk,txfee,opret));
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}
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return(0);
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}
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std::string RewardsLock(uint64_t txfee,uint64_t amount)
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{
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CMutableTransaction mtx; CPubKey mypk,rewardspk; CScript opret;
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if ( txfee == 0 )
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txfee = 10000;
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rewardspk = GetUnspendable(EVAL_REWARDS,0);
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mypk = pubkey2pk(Mypubkey());
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if ( AddNormalinputs(mtx,mypk,amount+2*txfee,64) > 0 )
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{
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mtx.vout.push_back(MakeRewardsVout(amount,rewardspk));
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// specify destination pubkey, funding txid
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return(FinalizeCCTx(EVAL_REWARDS,mtx,mypk,txfee,opret create script));
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} else fprintf(stderr,"cant find rewards inputs\n");
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return(0);
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}
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std::string RewardsUnlock(uint64_t txfee)
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{
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CMutableTransaction mtx; CPubKey mypk,rewardspk; CScript opret; uint64_t reward,claim,inputs,CCchange=0;
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if ( txfee == 0 )
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txfee = 10000;
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rewardspk = GetUnspendable(EVAL_REWARDS,0);
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mypk = pubkey2pk(Mypubkey());
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if ( (claim= AddRewardsInputs(mtx,mypk,(1LL << 30),1)) > 0 && (reward= RewardsCalc(claim,mtx.vin[0].prevout.hash)) > txfee )
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{
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if ( (inputs= AddRewardsInputs(mtx,mypk,reward+txfee,30)) > 0 )
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{
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if ( inputs > (reward+txfee) )
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CCchange = (inputs - reward - txfee);
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if ( CCchange != 0 )
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mtx.vout.push_back(MakeRewardsVout(CCchange,rewardspk));
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mtx.vout.push_back(CTxOut(claim+reward,CScript() << ParseHex(HexStr(mypk)) << OP_CHECKSIG));
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return(FinalizeCCTx(EVAL_REWARDS,mtx,mypk,txfee,opret));
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}
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} else fprintf(stderr,"cant find rewards inputs\n");
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return(0);
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}
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