Hush Full Node software. We were censored from Github, this is where all development happens now.
https://hush.is
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446 lines
20 KiB
446 lines
20 KiB
/******************************************************************************
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* Copyright © 2014-2019 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 "CCPrices.h"
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/*
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Prices CC would best build on top of the oracles CC, ie. to combine payments for multiple oracles and to calculate a 51% protected price feed.
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We need to assume there is an oracle for a specific price. In the event there are more than one provider, the majority need to be within correlation distance to update a pricepoint.
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int64_t OraclePrice(int32_t height,uint256 reforacletxid,char *markeraddr,char *format);
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Using the above function, a consensus price can be obtained for a datasource.
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given an oracletxid, the marketaddr and format can be extracted to be used for future calls to OraclePrice. This allows to set a starting price and that in turn allows cash settled leveraged trading!
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Funds work like with dice, ie. there is a Prices plan that traders bet against.
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PricesFunding oracletxid, margin, priceaveraging, maxleverage, funding, longtoken, shorttoken, N [pubkeys]
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PricesBet -> oracletxid start with 'L', leverage, funding, direction
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funds are locked into global CC address
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it can be closed at anytime by the trader for cash settlement
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the house account can close it if rekt
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Implementation Notes:
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In order to eliminate the need for worrying about sybil attacks, each prices plan would be able to specific pubkey(s?) for whitelisted publishers. It would be possible to have a non-whitelisted plan that would use 50% correlation between publishers.
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delta neutral balancing of riskexposure: fabs(long exposure - short exposure)
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bet +B at leverage L
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absval(sum(+BLi) - sum(-Bli))
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validate: update riskexposure and it needs to be <= funds
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PricesProfits: limit withdraw to funds in excess of riskexposure
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PricesFinish: payout (if winning) and update riskexposure
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need long/short exposure assets
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funding -> 1of2 CC global CC address and dealer address, exposure tokens to global 1of2 assets CC address
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pricebet -> user funds and exposure token to 1of2 address.
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pricewin -> winnings from dealer funds, exposure token back to global address
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priceloss -> exposuretoken back to global address
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exposure address, funds address
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*/
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// start of consensus code
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int64_t PricesOraclePrice(int64_t &rektprice,uint64_t mode,uint256 oracletxid,std::vector<CPubKey>pubkeys,int32_t dir,int64_t amount,int32_t leverage)
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{
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int64_t price;
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// howto ensure price when block it confirms it not known
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// get price from oracle + current chaintip
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// normalize leveraged amount
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if ( dir > 0 )
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rektprice = price * leverage / (leverage-1);
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else rektprice = price * (leverage-1) / leverage;
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return(price);
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}
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CScript EncodePricesFundingOpRet(uint8_t funcid,CPubKey planpk,uint256 oracletxid,uint256 longtoken,uint256 shorttoken,int32_t millimargin,uint64_t mode,int32_t maxleverage,std::vector<CPubKey> pubkeys,uint256 bettoken)
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{
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CScript opret;
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fprintf(stderr,"implement EncodePricesFundingOpRet\n");
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return(opret);
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}
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uint8_t DecodePricesFundingOpRet(CScript scriptPubKey,CPubKey &planpk,uint256 &oracletxid,uint256 &longtoken,uint256 &shorttoken,int32_t &millimargin,uint64_t &mode,int32_t &maxleverage,std::vector<CPubKey> &pubkeys,uint256 &bettoken)
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{
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fprintf(stderr,"implement DecodePricesFundingOpRet\n");
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return(0);
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}
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bool PricesValidate(struct CCcontract_info *cp,Eval* eval,const CTransaction &tx, uint32_t nIn)
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{
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int32_t numvins,numvouts,preventCCvins,preventCCvouts,i,numblocks; bool retval; uint256 txid; uint8_t hash[32]; char str[65],destaddr[64];
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return(false);
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std::vector<std::pair<CAddressIndexKey, CAmount> > txids;
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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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{
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return eval->Invalid("illegal normal vini");
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}
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}
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//fprintf(stderr,"check amounts\n");
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//if ( PricesExactAmounts(cp,eval,tx,1,10000) == false )
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{
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fprintf(stderr,"Pricesget invalid amount\n");
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return false;
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}
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//else
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{
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txid = tx.GetHash();
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memcpy(hash,&txid,sizeof(hash));
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retval = PreventCC(eval,tx,preventCCvins,numvins,preventCCvouts,numvouts);
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if ( retval != 0 )
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fprintf(stderr,"Pricesget validated\n");
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else fprintf(stderr,"Pricesget invalid\n");
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return(retval);
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}
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}
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}
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// end of consensus code
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// helper functions for rpc calls in rpcwallet.cpp
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int64_t AddTokensInputs(struct CCcontract_info *cp,CMutableTransaction &mtx,char *destaddr,uint256 tolenid,int64_t total,int32_t maxinputs)
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{
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// add threshold check
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int64_t nValue,price,totalinputs = 0; uint256 txid,hashBlock; std::vector<uint8_t> origpubkey; CTransaction vintx; int32_t vout,n = 0;
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std::vector<std::pair<CAddressUnspentKey, CAddressUnspentValue> > unspentOutputs;
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SetCCunspents(unspentOutputs,destaddr);
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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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vout = (int32_t)it->first.index;
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// need to prevent dup
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if ( GetTransaction(txid,vintx,hashBlock,false) != 0 && vout < vintx.vout.size() )
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{
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// need to verify assetid
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if ( (nValue= vintx.vout[vout].nValue) >= 10000 && myIsutxo_spentinmempool(txid,vout) == 0 )
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{
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if ( total != 0 && maxinputs != 0 )
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mtx.vin.push_back(CTxIn(txid,vout,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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UniValue PricesList()
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{
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UniValue result(UniValue::VARR); std::vector<std::pair<CAddressIndexKey, CAmount> > addressIndex; struct CCcontract_info *cp,C; uint64_t mode; int32_t margin,maxleverage; std::vector<CPubKey>pubkeys; uint256 txid,hashBlock,oracletxid,longtoken,shorttoken,bettoken; CPubKey planpk,pricespk; char str[65]; CTransaction vintx;
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cp = CCinit(&C,EVAL_PRICES);
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pricespk = GetUnspendable(cp,0);
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SetCCtxids(addressIndex,cp->normaladdr);
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for (std::vector<std::pair<CAddressIndexKey, CAmount> >::const_iterator it=addressIndex.begin(); it!=addressIndex.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 ( vintx.vout.size() > 0 && DecodePricesFundingOpRet(vintx.vout[vintx.vout.size()-1].scriptPubKey,planpk,oracletxid,longtoken,shorttoken,margin,mode,maxleverage,pubkeys,bettoken) == 'F' )
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{
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result.push_back(uint256_str(str,txid));
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}
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}
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}
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return(result);
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}
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// longtoken satoshis limits long exposure
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// shorttoken satoshis limits short exposure
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// both must be in the 1of2 CC address with its total supply
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// bettoken
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std::string PricesCreateFunding(uint64_t txfee,uint256 bettoken,uint256 oracletxid,uint64_t margin,uint64_t mode,uint256 longtoken,uint256 shorttoken,int32_t maxleverage,int64_t funding,std::vector<CPubKey> pubkeys)
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{
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CMutableTransaction mtx = CreateNewContextualCMutableTransaction(Params().GetConsensus(), komodo_nextheight());
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CTransaction oracletx; int64_t fullsupply,inputs,CCchange=0; uint256 hashBlock; char str[65],coinaddr[64],houseaddr[64]; CPubKey mypk,pricespk; int32_t i,N,numvouts; struct CCcontract_info *cp,C;
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if ( funding < 100*COIN || maxleverage <= 0 || maxleverage > 10000 )
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{
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CCerror = "invalid parameter error";
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fprintf(stderr,"%s\n", CCerror.c_str() );
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return("");
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}
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cp = CCinit(&C,EVAL_PRICES);
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if ( txfee == 0 )
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txfee = 10000;
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mypk = pubkey2pk(Mypubkey());
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pricespk = GetUnspendable(cp,0);
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if ( (N= (int32_t)pubkeys.size()) || N > 15 )
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{
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fprintf(stderr,"too many pubkeys N.%d\n",N);
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return("");
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}
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for (i=0; i<N; i++)
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{
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Getscriptaddress(coinaddr,CScript() << ParseHex(HexStr(pubkeys[i])) << OP_CHECKSIG);
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if ( CCaddress_balance(coinaddr) == 0 )
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{
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fprintf(stderr,"N.%d but pubkeys[%d] has no balance\n",N,i);
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return("");
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}
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}
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if ( GetCCaddress1of2(cp,houseaddr,pricespk,mypk) == 0 )
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{
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fprintf(stderr,"PricesCreateFunding cant create globaladdr\n");
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return("");
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}
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if ( CCtoken_balance(houseaddr,longtoken) != CCfullsupply(longtoken) )
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{
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fprintf(stderr,"PricesCreateFunding (%s) globaladdr.%s token balance %.8f != %.8f\n",uint256_str(str,longtoken),houseaddr,(double)CCtoken_balance(houseaddr,longtoken)/COIN,(double)CCfullsupply(longtoken)/COIN);
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return("");
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}
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if ( CCtoken_balance(houseaddr,shorttoken) != CCfullsupply(shorttoken) )
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{
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fprintf(stderr,"PricesCreateFunding (%s) globaladdr.%s token balance %.8f != %.8f\n",uint256_str(str,longtoken),houseaddr,(double)CCtoken_balance(houseaddr,longtoken)/COIN,(double)CCfullsupply(shorttoken)/COIN);
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return("");
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}
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if ( GetTransaction(oracletxid,oracletx,hashBlock,false) == 0 || (numvouts= oracletx.vout.size()) <= 0 )
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{
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fprintf(stderr,"cant find oracletxid %s\n",uint256_str(str,oracletxid));
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return("");
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}
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fprintf(stderr,"error check bettoken\n");
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if ( AddNormalinputs(mtx,mypk,3*txfee,4) > 0 )
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{
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mtx.vout.push_back(CTxOut(txfee,CScript() << ParseHex(HexStr(mypk)) << OP_CHECKSIG));
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mtx.vout.push_back(CTxOut(txfee,CScript() << ParseHex(HexStr(pricespk)) << OP_CHECKSIG));
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return(FinalizeCCTx(0,cp,mtx,mypk,txfee,EncodePricesFundingOpRet('F',mypk,oracletxid,longtoken,shorttoken,margin,mode,maxleverage,pubkeys,bettoken)));
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}
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else
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{
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CCerror = "cant find enough inputs";
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fprintf(stderr,"%s\n", CCerror.c_str() );
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}
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return("");
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}
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UniValue PricesInfo(uint256 fundingtxid)
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{
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UniValue result(UniValue::VOBJ),a(UniValue::VARR); CPubKey pricespk,planpk; uint256 hashBlock,oracletxid,longtoken,shorttoken,bettoken; CTransaction vintx; int64_t balance,supply,exposure; uint64_t funding,mode; int32_t i,margin,maxleverage; char numstr[65],houseaddr[64],exposureaddr[64],str[65]; std::vector<CPubKey>pubkeys; struct CCcontract_info *cp,C;
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cp = CCinit(&C,EVAL_PRICES);
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pricespk = GetUnspendable(cp,0);
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if ( GetTransaction(fundingtxid,vintx,hashBlock,false) == 0 )
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{
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fprintf(stderr,"cant find fundingtxid\n");
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ERR_RESULT("cant find fundingtxid");
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return(result);
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}
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if ( vintx.vout.size() > 0 && DecodePricesFundingOpRet(vintx.vout[vintx.vout.size()-1].scriptPubKey,planpk,oracletxid,longtoken,shorttoken,margin,mode,maxleverage,pubkeys,bettoken) == 'F' )
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{
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result.push_back(Pair("result","success"));
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result.push_back(Pair("fundingtxid",uint256_str(str,fundingtxid)));
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result.push_back(Pair("bettoken",uint256_str(str,bettoken)));
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result.push_back(Pair("oracletxid",uint256_str(str,oracletxid)));
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sprintf(numstr,"%.3f",(double)margin/1000);
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result.push_back(Pair("profitmargin",numstr));
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result.push_back(Pair("maxleverage",maxleverage));
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result.push_back(Pair("mode",(int64_t)mode));
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for (i=0; i<pubkeys.size(); i++)
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a.push_back(pubkey33_str(str,(uint8_t *)&pubkeys[i]));
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result.push_back(Pair("pubkeys",a));
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GetCCaddress1of2(cp,houseaddr,pricespk,planpk);
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GetCCaddress1of2(cp,exposureaddr,pricespk,pricespk); // assets addr
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result.push_back(Pair("houseaddr",houseaddr));
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result.push_back(Pair("betaddr",exposureaddr));
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result.push_back(Pair("longtoken",uint256_str(str,longtoken)));
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supply = CCfullsupply(longtoken);
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result.push_back(Pair("longsupply",supply));
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balance = CCtoken_balance(houseaddr,longtoken);
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result.push_back(Pair("longavail",balance));
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exposure = CCtoken_balance(exposureaddr,longtoken);
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result.push_back(Pair("longexposure",exposure));
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result.push_back(Pair("shorttoken",uint256_str(str,shorttoken)));
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supply = CCfullsupply(shorttoken);
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result.push_back(Pair("shortsupply",supply));
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balance = CCtoken_balance(houseaddr,shorttoken);
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result.push_back(Pair("shortavail",balance));
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exposure = CCtoken_balance(exposureaddr,shorttoken);
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result.push_back(Pair("shortexposure",exposure));
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sprintf(numstr,"%.8f",(double)CCtoken_balance(houseaddr,bettoken)/COIN);
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result.push_back(Pair("funds",numstr));
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}
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return(result);
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}
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std::string PricesAddFunding(uint64_t txfee,uint256 refbettoken,uint256 fundingtxid,int64_t amount)
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{
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CMutableTransaction mtx = CreateNewContextualCMutableTransaction(Params().GetConsensus(), komodo_nextheight());
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struct CCcontract_info *cp,C; CPubKey pricespk,planpk,mypk; uint256 hashBlock,oracletxid,longtoken,shorttoken,bettoken; CTransaction tx; int64_t balance,supply,exposure,inputs,CCchange = 0; uint64_t funding,mode; int32_t margin,maxleverage; char houseaddr[64],myaddr[64]; std::vector<CPubKey>pubkeys;
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if ( amount < 10000 )
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{
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CCerror = "amount must be positive";
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fprintf(stderr,"%s\n", CCerror.c_str() );
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return("");
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}
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cp = CCinit(&C,EVAL_PRICES);
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if ( txfee == 0 )
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txfee = 10000;
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mypk = pubkey2pk(Mypubkey());
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pricespk = GetUnspendable(cp,0);
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GetCCaddress(cp,myaddr,mypk);
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if ( GetTransaction(fundingtxid,tx,hashBlock,false) == 0 )
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{
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fprintf(stderr,"cant find fundingtxid\n");
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return("");
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}
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if ( tx.vout.size() > 0 && DecodePricesFundingOpRet(tx.vout[tx.vout.size()-1].scriptPubKey,planpk,oracletxid,longtoken,shorttoken,margin,mode,maxleverage,pubkeys,bettoken) == 'F' && bettoken == refbettoken )
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{
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GetCCaddress1of2(cp,houseaddr,pricespk,planpk);
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if ( AddNormalinputs(mtx,mypk,2*txfee,3) > 0 )
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{
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if ( (inputs= AddTokensInputs(cp,mtx,myaddr,bettoken,amount,60)) >= amount )
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{
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mtx.vout.push_back(MakeCC1of2vout(cp->evalcode,amount,pricespk,planpk));
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mtx.vout.push_back(CTxOut(txfee,CScript() << ParseHex(HexStr(planpk)) << OP_CHECKSIG));
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if ( inputs > amount+txfee )
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CCchange = (inputs - amount);
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mtx.vout.push_back(MakeCC1vout(cp->evalcode,CCchange,mypk));
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// add addr2
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return(FinalizeCCTx(0,cp,mtx,mypk,txfee,EncodeAssetOpRet('t',bettoken,zeroid,0,Mypubkey())));
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}
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else
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{
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CCerror = "cant find enough bet inputs";
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fprintf(stderr,"%s\n", CCerror.c_str() );
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}
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}
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else
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{
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CCerror = "cant find enough inputs";
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fprintf(stderr,"%s\n", CCerror.c_str() );
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}
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}
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return("");
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}
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std::string PricesBet(uint64_t txfee,uint256 refbettoken,uint256 fundingtxid,int64_t amount,int32_t leverage)
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{
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CMutableTransaction mtx = CreateNewContextualCMutableTransaction(Params().GetConsensus(), komodo_nextheight());
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struct CCcontract_info *cp,C; CPubKey pricespk,planpk,mypk; uint256 hashBlock,oracletxid,longtoken,shorttoken,tokenid,bettoken; CTransaction tx; int64_t balance,supply,exposure,inputs,inputs2,longexposure,netexposure,shortexposure,CCchange = 0,CCchange2 = 0; uint64_t funding,mode; int32_t dir,margin,maxleverage; char houseaddr[64],myaddr[64],exposureaddr[64]; std::vector<CPubKey>pubkeys;
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if ( amount < 0 )
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{
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amount = -amount;
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dir = -1;
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} else dir = 1;
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cp = CCinit(&C,EVAL_PRICES);
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if ( txfee == 0 )
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txfee = 10000;
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mypk = pubkey2pk(Mypubkey());
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pricespk = GetUnspendable(cp,0);
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GetCCaddress(cp,myaddr,mypk);
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if ( GetTransaction(fundingtxid,tx,hashBlock,false) == 0 )
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{
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fprintf(stderr,"cant find fundingtxid\n");
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return("");
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}
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if ( tx.vout.size() > 0 && DecodePricesFundingOpRet(tx.vout[tx.vout.size()-1].scriptPubKey,planpk,oracletxid,longtoken,shorttoken,margin,mode,maxleverage,pubkeys,bettoken) == 'F' && bettoken == refbettoken )
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{
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if ( leverage > maxleverage || leverage < 1 )
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{
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fprintf(stderr,"illegal leverage\n");
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return("");
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}
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GetCCaddress1of2(cp,houseaddr,pricespk,planpk);
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GetCCaddress1of2(cp,exposureaddr,pricespk,pricespk);
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if ( dir < 0 )
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tokenid = shorttoken;
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else tokenid = longtoken;
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exposure = leverage * amount;
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longexposure = CCtoken_balance(exposureaddr,longtoken);
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shortexposure = CCtoken_balance(exposureaddr,shorttoken);
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netexposure = (longexposure - shortexposure + exposure*dir);
|
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if ( netexposure < 0 )
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netexposure = -netexposure;
|
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balance = CCtoken_balance(myaddr,bettoken) / COIN;
|
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if ( balance < netexposure*9/10 ) // 10% extra room for dynamically closed bets in wrong direction
|
|
{
|
|
fprintf(stderr,"balance %lld < 90%% netexposure %lld, refuse bet\n",(long long)balance,(long long)netexposure);
|
|
return("");
|
|
}
|
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if ( AddNormalinputs(mtx,mypk,txfee,3) > 0 )
|
|
{
|
|
if ( (inputs= AddTokensInputs(cp,mtx,houseaddr,tokenid,exposure,30)) >= exposure )
|
|
{
|
|
if ( (inputs2= AddTokensInputs(cp,mtx,myaddr,bettoken,amount,30)) >= amount )
|
|
{
|
|
mtx.vout.push_back(MakeCC1of2vout(cp->evalcode,amount,pricespk,planpk));
|
|
mtx.vout.push_back(MakeCC1of2vout(cp->evalcode,exposure,pricespk,pricespk));
|
|
if ( inputs > exposure+txfee )
|
|
CCchange = (inputs - exposure);
|
|
if ( inputs2 > amount+txfee )
|
|
CCchange2 = (inputs2 - amount);
|
|
mtx.vout.push_back(MakeCC1of2vout(cp->evalcode,CCchange,pricespk,planpk));
|
|
mtx.vout.push_back(MakeCC1vout(cp->evalcode,CCchange2,mypk));
|
|
// add addr2 and addr3
|
|
//return(FinalizeCCTx(0,cp,mtx,mypk,txfee,EncodePricesExtra('T',tokenid,bettoken,zeroid,dir*leverage)));
|
|
CScript opret;
|
|
return(FinalizeCCTx(0,cp,mtx,mypk,txfee,opret));
|
|
}
|
|
else
|
|
{
|
|
fprintf(stderr,"cant find enough bettoken inputs\n");
|
|
return("");
|
|
}
|
|
}
|
|
else
|
|
{
|
|
fprintf(stderr,"cant find enough exposure inputs\n");
|
|
return("");
|
|
}
|
|
}
|
|
else
|
|
{
|
|
CCerror = "cant find enough inputsB";
|
|
fprintf(stderr,"%s\n", CCerror.c_str() );
|
|
}
|
|
}
|
|
return("");
|
|
}
|
|
|
|
UniValue PricesStatus(uint64_t txfee,uint256 refbettoken,uint256 fundingtxid,uint256 bettxid)
|
|
{
|
|
UniValue result(UniValue::VOBJ);
|
|
// get height of bettxid
|
|
// get price and rekt
|
|
// get current height and price
|
|
// what about if rekt in the past?
|
|
return(result);
|
|
}
|
|
|
|
std::string PricesFinish(uint64_t txfee,uint256 refbettoken,uint256 fundingtxid,uint256 bettxid)
|
|
{
|
|
return("");
|
|
}
|
|
|
|
|
|
|
|
|