From b4e0b6bca4676407145b640f48101846ade1ee57 Mon Sep 17 00:00:00 2001 From: jl777 Date: Sat, 19 Jan 2019 23:54:51 -1100 Subject: [PATCH] Faucet2 --- src/cc/cclib.cpp | 220 ++++++++++++++++++++++++++++++++++++++- src/wallet/rpcwallet.cpp | 2 +- 2 files changed, 219 insertions(+), 3 deletions(-) diff --git a/src/cc/cclib.cpp b/src/cc/cclib.cpp index 0f201acc4..23f3d81c9 100644 --- a/src/cc/cclib.cpp +++ b/src/cc/cclib.cpp @@ -27,6 +27,8 @@ #include "core_io.h" #include "crosschain.h" +#define FAUCET2SIZE COIN + struct CClib_rpcinfo { char *method,*help; @@ -35,6 +37,7 @@ struct CClib_rpcinfo } CClib_methods[] = { + { "faucet2_fund", "amount", 1, 1, 'F' }, { "faucet2_get", "", 0, 0, 'G' }, }; @@ -90,12 +93,225 @@ UniValue CClib(struct CCcontract_info *cp,char *method,cJSON *params) return(result); } +int64_t IsCClibvout(struct CCcontract_info *cp,const CTransaction& tx,int32_t v) +{ + char destaddr[64]; + if ( tx.vout[v].scriptPubKey.IsPayToCryptoCondition() != 0 ) + { + if ( Getscriptaddress(destaddr,tx.vout[v].scriptPubKey) > 0 && strcmp(destaddr,cp->unspendableCCaddr) == 0 ) + return(tx.vout[v].nValue); + } + return(0); +} + +bool CClibExactAmounts(struct CCcontract_info *cp,Eval* eval,const CTransaction &tx,int32_t minage,uint64_t txfee) +{ + static uint256 zerohash; + CTransaction vinTx; uint256 hashBlock,activehash; int32_t i,numvins,numvouts; int64_t inputs=0,outputs=0,assetoshis; + numvins = tx.vin.size(); + numvouts = tx.vout.size(); + for (i=0; iismyvin)(tx.vin[i].scriptSig) != 0 ) + { + //fprintf(stderr,"vini.%d check mempool\n",i); + if ( eval->GetTxUnconfirmed(tx.vin[i].prevout.hash,vinTx,hashBlock) == 0 ) + return eval->Invalid("cant find vinTx"); + else + { + //fprintf(stderr,"vini.%d check hash and vout\n",i); + if ( hashBlock == zerohash ) + return eval->Invalid("cant faucet2 from mempool"); + if ( (assetoshis= IsCClibvout(cp,vinTx,tx.vin[i].prevout.n)) != 0 ) + inputs += assetoshis; + } + } + } + for (i=0; iInvalid("mismatched inputs != outputs + FAUCET2SIZE + txfee"); + } + else return(true); +} + bool CClib_validate(struct CCcontract_info *cp,Eval *eval,const CTransaction &txTo,unsigned int nIn) { - return(true); // for now + int32_t numvins,numvouts,preventCCvins,preventCCvouts,i,numblocks; bool retval; uint256 txid; uint8_t hash[32]; char str[65],destaddr[64]; + std::vector > txids; + numvins = tx.vin.size(); + numvouts = tx.vout.size(); + preventCCvins = preventCCvouts = -1; + if ( numvouts < 1 ) + return eval->Invalid("no vouts"); + else + { + for (i=0; iInvalid("illegal normal vini"); + } + } + //fprintf(stderr,"check amounts\n"); + if ( CClibExactAmounts(cp,eval,tx,1,10000) == false ) + { + fprintf(stderr,"faucetget invalid amount\n"); + return false; + } + else + { + preventCCvouts = 1; + if ( IsFaucetvout(cp,tx,0) != 0 ) + { + preventCCvouts++; + i = 1; + } else i = 0; + txid = tx.GetHash(); + memcpy(hash,&txid,sizeof(hash)); + fprintf(stderr,"check faucetget txid %s %02x/%02x\n",uint256_str(str,txid),hash[0],hash[31]); + if ( tx.vout[i].nValue != FAUCET2SIZE ) + return eval->Invalid("invalid faucet output"); + else if ( (hash[0] & 0xff) != 0 || (hash[31] & 0xff) != 0 ) + return eval->Invalid("invalid faucetget txid"); + Getscriptaddress(destaddr,tx.vout[i].scriptPubKey); + SetCCtxids(txids,destaddr); + for (std::vector >::const_iterator it=txids.begin(); it!=txids.end(); it++) + { + //int height = it->first.blockHeight; + if ( CCduration(numblocks,it->first.txhash) > 0 && numblocks > 3 ) + { + //fprintf(stderr,"would return error %s numblocks.%d ago\n",uint256_str(str,it->first.txhash),numblocks); + return eval->Invalid("faucet2 is only for brand new addresses"); + } + } + retval = PreventCC(eval,tx,preventCCvins,numvins,preventCCvouts,numvouts); + if ( retval != 0 ) + fprintf(stderr,"faucet2get validated\n"); + else fprintf(stderr,"faucet2get invalid\n"); + return(retval); + } + } +} + +int64_t AddCClibInputs(struct CCcontract_info *cp,CMutableTransaction &mtx,CPubKey pk,int64_t total,int32_t maxinputs) +{ + char coinaddr[64]; int64_t threshold,nValue,price,totalinputs = 0; uint256 txid,hashBlock; std::vector origpubkey; CTransaction vintx; int32_t vout,n = 0; + std::vector > unspentOutputs; + GetCCaddress(cp,coinaddr,pk); + SetCCunspents(unspentOutputs,coinaddr); + threshold = total/(maxinputs+1); + for (std::vector >::const_iterator it=unspentOutputs.begin(); it!=unspentOutputs.end(); it++) + { + txid = it->first.txhash; + vout = (int32_t)it->first.index; + if ( it->second.satoshis < threshold ) + continue; + //char str[65]; fprintf(stderr,"check %s/v%d %.8f`\n",uint256_str(str,txid),vout,(double)it->second.satoshis/COIN); + // no need to prevent dup + if ( GetTransaction(txid,vintx,hashBlock,false) != 0 ) + { + if ( (nValue= IsCClibvout(cp,vintx,vout)) > 1000000 && myIsutxo_spentinmempool(txid,vout) == 0 ) + { + if ( total != 0 && maxinputs != 0 ) + mtx.vin.push_back(CTxIn(txid,vout,CScript())); + nValue = it->second.satoshis; + totalinputs += nValue; + n++; + if ( (total > 0 && totalinputs >= total) || (maxinputs > 0 && n >= maxinputs) ) + break; + } else fprintf(stderr,"nValue too small or already spent in mempool\n"); + } else fprintf(stderr,"couldnt get tx\n"); + } + return(totalinputs); +} + + +std::string Faucet2Fund(struct CCcontract_info *cp,uint64_t txfee,int64_t funds) +{ + CMutableTransaction mtx = CreateNewContextualCMutableTransaction(Params().GetConsensus(), komodo_nextheight()); + CPubKey mypk,cclibpk; CScript opret; + if ( txfee == 0 ) + txfee = 10000; + mypk = pubkey2pk(Mypubkey()); + cclibpk = GetUnspendable(cp,0); + if ( AddNormalinputs(mtx,mypk,funds+txfee,64) > 0 ) + { + mtx.vout.push_back(MakeCC1vout(cp->evalcode,funds,cclibpk)); + return(FinalizeCCTx(0,cp,mtx,mypk,txfee,opret)); + } + return(""); +} + +UniValue FaucetInfo() +{ + UniValue result(UniValue::VOBJ); char numstr[64]; + CMutableTransaction mtx = CreateNewContextualCMutableTransaction(Params().GetConsensus(), komodo_nextheight()); + CPubKey faucetpk; struct CCcontract_info *cp,C; int64_t funding; + result.push_back(Pair("result","success")); + result.push_back(Pair("name","Faucet")); + cp = CCinit(&C,EVAL_FAUCET); + faucetpk = GetUnspendable(cp,0); + funding = AddFaucetInputs(cp,mtx,faucetpk,0,0); + sprintf(numstr,"%.8f",(double)funding/COIN); + result.push_back(Pair("funding",numstr)); + return(result); } std::string CClib_rawtxgen(struct CCcontract_info *cp,uint8_t funcid,cJSON *params) { - return((char *)"deadbeef"); + CMutableTransaction tmpmtx,mtx = CreateNewContextualCMutableTransaction(Params().GetConsensus(), komodo_nextheight()); + CPubKey mypk,cclibpk; int64_t funds,txfee=0,inputs,CCchange=0,nValue=FAUCET2SIZE; struct CCcontract_info *cp,C; std::string rawhex; uint32_t j; int32_t i,len; uint8_t buf[32768]; bits256 hash; + if ( txfee == 0 ) + txfee = 10000; + if ( funcid == 'F' ) + { + if ( cJSON_GetArraySize(params) > 0 ) + { + funds = (int64_t)jdouble(jarrayi(params,0))*COIN + 0.0000000049; + return(Faucet2Fund(cp,0,funds)); + } else return(""); + } + else if ( funcid != 'G' ) + return(""); + cclibpk = GetUnspendable(cp,0); + mypk = pubkey2pk(Mypubkey()); + if ( (inputs= AddCClibInputs(cp,mtx,cclibpk,nValue+txfee,60)) > 0 ) + { + if ( inputs > nValue ) + CCchange = (inputs - nValue - txfee); + if ( CCchange != 0 ) + mtx.vout.push_back(MakeCC1vout(EVAL_FIRSTUSER,CCchange,cclibpk)); + mtx.vout.push_back(CTxOut(nValue,CScript() << ParseHex(HexStr(mypk)) << OP_CHECKSIG)); + fprintf(stderr,"start at %u\n",(uint32_t)time(NULL)); + j = rand() & 0xfffffff; + for (i=0; i<1000000; i++,j++) + { + tmpmtx = mtx; + rawhex = FinalizeCCTx(-1LL,cp,tmpmtx,mypk,txfee,CScript() << OP_RETURN << E_MARSHAL(ss << (uint8_t)EVAL_FIRSTUSER << (uint8_t)'G' << j)); + if ( (len= (int32_t)rawhex.size()) > 0 && len < 65536 ) + { + len >>= 1; + decode_hex(buf,len,(char *)rawhex.c_str()); + hash = bits256_doublesha256(0,buf,len); + if ( (hash.bytes[0] & 0xff) == 0 && (hash.bytes[31] & 0xff) == 0 ) + { + fprintf(stderr,"found valid txid after %d iterations %u\n",i,(uint32_t)time(NULL)); + return(rawhex); + } + //fprintf(stderr,"%02x%02x ",hash.bytes[0],hash.bytes[31]); + } + } + fprintf(stderr,"couldnt generate valid txid %u\n",(uint32_t)time(NULL)); + return(""); + } else fprintf(stderr,"cant find faucet inputs\n"); + return(""); } diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp index 5231dae27..174f447f0 100644 --- a/src/wallet/rpcwallet.cpp +++ b/src/wallet/rpcwallet.cpp @@ -5359,7 +5359,7 @@ UniValue cclib(const UniValue& params, bool fHelp) throw runtime_error("cclib method [JSON params]\n"); if ( ensure_CCrequirements() < 0 ) throw runtime_error("to use CC contracts, you need to launch daemon with valid -pubkey= for an address in your wallet\n"); - method = params[0].get_str().c_str(); + method = (char *)params[0].get_str().c_str(); jsonparams = cJSON_Parse(params[1].get_str().c_str()); return(CClib(cp,method,jsonparams)); }