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Faucet2

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This commit is contained in:
jl777
2019-01-19 23:54:51 -11:00
parent 01d2fa36a2
commit b4e0b6bca4
2 changed files with 219 additions and 3 deletions
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220
src/cc/cclib.cpp
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@@ -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", "<no args>", 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; i<numvins; i++)
{
//fprintf(stderr,"vini.%d\n",i);
if ( (*cp->ismyvin)(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; i<numvouts; i++)
{
//fprintf(stderr,"i.%d of numvouts.%d\n",i,numvouts);
if ( (assetoshis= IsCClibvout(cp,tx,i)) != 0 )
outputs += assetoshis;
}
if ( inputs != outputs+FAUCETSIZE+txfee )
{
fprintf(stderr,"inputs %llu vs outputs %llu\n",(long long)inputs,(long long)outputs);
return eval->Invalid("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<std::pair<CAddressIndexKey, CAmount> > txids;
numvins = tx.vin.size();
numvouts = tx.vout.size();
preventCCvins = preventCCvouts = -1;
if ( numvouts < 1 )
return eval->Invalid("no vouts");
else
{
for (i=0; i<numvins; i++)
{
if ( IsCCInput(tx.vin[0].scriptSig) == 0 )
{
fprintf(stderr,"faucetget invalid vini\n");
return eval->Invalid("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<std::pair<CAddressIndexKey, CAmount> >::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<uint8_t> origpubkey; CTransaction vintx; int32_t vout,n = 0;
std::vector<std::pair<CAddressUnspentKey, CAddressUnspentValue> > unspentOutputs;
GetCCaddress(cp,coinaddr,pk);
SetCCunspents(unspentOutputs,coinaddr);
threshold = total/(maxinputs+1);
for (std::vector<std::pair<CAddressUnspentKey, CAddressUnspentValue> >::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("");
}