/*
Assets can be created or transferred.
+ native coins are also locked in the EVAL_ASSETS address, so we need a strict rule on when utxo in the special address are native coins and when they are assets. The specific rule that must not be violated is that vout0 for 'b'/'B' funcid are native coins. All other utxo locked in the special address are assets.
+
To create an asset use CC EVAL_ASSETS to create a transaction where vout[0] funds the assets. Externally each satoshi can be interpreted to represent 1 asset, or 100 million satoshis for one asset with 8 decimals, and the other decimals in between. The interpretation of the number of decimals is left to the higher level usages.
Once created, the assetid is the txid of the create transaction and using the assetid/0 it can spend the assets to however many outputs it creates. The restriction is that the last output must be an opreturn with the assetid. The sum of all but the first output needs to add up to the total assetoshis input. The first output is ignored and used for change from txfee.
create
vin.0: normal input
vout.0: issuance assetoshis to CC
- vout.1: normal output for change (if any)
+ vout.1: tag sent to normal address of AssetsCCaddress
+ vout.2: normal output for change (if any)
vout.n-1: opreturn [EVAL_ASSETS] ['c'] [origpubkey] "<assetname>" "<description>"
transfer
selloffer:
vin.0: normal input
- vin.1: valid CC output for sale
+ vin.1+: valid CC output for sale
vout.0: vin.1 assetoshis output to CC to unspendable
vout.1: CC output for change (if any)
vout.2: normal output for change (if any)
exchange:
vin.0: normal input
- vin.1: valid CC output
+ vin.1+: valid CC output
vout.0: vin.1 assetoshis output to CC to unspendable
vout.1: CC output for change (if any)
vout.2: normal output for change (if any)
vout.n-1: opreturn [EVAL_ASSETS] ['E'] [assetid vin0+1] [assetid vin2] [remaining asset2 required] [origpubkey]
*/
-bool AssetValidate(Eval* eval,const CTransaction &tx,int32_t numvouts,uint8_t funcid,uint256 assetid,uint256 assetid2,uint64_t remaining_price,std::vector<uint8_t> origpubkey)
+bool AssetsValidate(struct CCcontract_info *cp,Eval* eval,const CTransaction &tx, uint32_t nIn, bool fulfilled)
{
static uint256 zero;
- CTxDestination address; const CTransaction vinTx; uint256 hashBlock; int32_t i,numvins,preventCCvins,preventCCvouts; uint64_t nValue,assetoshis,outputs,inputs,tmpprice,totalprice,ignore; std::vector<uint8_t> tmporigpubkey,ignorepubkey; char destaddr[64],origaddr[64],CCaddr[64];
- fprintf(stderr,"AssetValidate (%c)\n",funcid);
+ CTxDestination address; CTransaction vinTx,createTx; uint256 hashBlock,assetid,assetid2; int32_t i,starti,numvins,numvouts,preventCCvins,preventCCvouts; int64_t remaining_price,nValue,assetoshis,outputs,inputs,tmpprice,totalunits,ignore; std::vector<uint8_t> origpubkey,tmporigpubkey,ignorepubkey; uint8_t funcid; char destaddr[64],origaddr[64],CCaddr[64];
numvins = tx.vin.size();
+ numvouts = tx.vout.size();
outputs = inputs = 0;
preventCCvins = preventCCvouts = -1;
- if ( IsCCInput(tx.vin[0].scriptSig) != 0 )
+ if ( (funcid= DecodeAssetOpRet(tx.vout[numvouts-1].scriptPubKey,assetid,assetid2,remaining_price,origpubkey)) == 0 )
+ return eval->Invalid("Invalid opreturn payload");
+ fprintf(stderr,"AssetValidate (%c)\n",funcid);
+ if ( funcid != 'o' && funcid != 'x' && eval->GetTxUnconfirmed(assetid,createTx,hashBlock) == 0 )
+ return eval->Invalid("cant find asset create txid");
+ else if ( funcid != 'o' && funcid != 'x' && assetid2 != zero && eval->GetTxUnconfirmed(assetid2,createTx,hashBlock) == 0 )
+ return eval->Invalid("cant find asset2 create txid");
+ else if ( IsCCInput(tx.vin[0].scriptSig) != 0 )
return eval->Invalid("illegal asset vin0");
else if ( numvouts < 1 )
return eval->Invalid("no vouts");
else if ( funcid != 'c' )
{
+ if ( funcid == 't' )
+ starti = 0;
+ else starti = 1;
if ( assetid == zero )
return eval->Invalid("illegal assetid");
- else if ( AssetExactAmounts(inputs,outputs,eval,tx,assetid) == false )
- eval->Invalid("asset inputs != outputs");
+ else if ( AssetExactAmounts(cp,inputs,starti,outputs,eval,tx,assetid) == false )
+ return eval->Invalid("asset inputs != outputs");
}
switch ( funcid )
{
//vout.n-1: opreturn [EVAL_ASSETS] ['t'] [assetid]
if ( inputs == 0 )
return eval->Invalid("no asset inputs for transfer");
- fprintf(stderr,"transfer validated %.8f -> %.8f\n",(double)inputs/COIN,(double)outputs/COIN);
+ fprintf(stderr,"transfer validated %.8f -> %.8f (%d %d)\n",(double)inputs/COIN,(double)outputs/COIN,preventCCvins,preventCCvouts);
break;
case 'b': // buyoffer
// vout.n-1: opreturn [EVAL_ASSETS] ['b'] [assetid] [amount of asset required] [origpubkey]
if ( remaining_price == 0 )
return eval->Invalid("illegal null amount for buyoffer");
- else if ( ConstrainVout(tx.vout[0],1,(char *)AssetsCCaddr,0) == 0 )
+ else if ( ConstrainVout(tx.vout[0],1,cp->unspendableCCaddr,0) == 0 )
return eval->Invalid("invalid vout for buyoffer");
preventCCvins = 1;
preventCCvouts = 1;
- fprintf(stderr,"buy offer validated to destaddr.(%s)\n",(char *)AssetsCCaddr);
+ fprintf(stderr,"buy offer validated to destaddr.(%s)\n",cp->unspendableCCaddr);
break;
case 'o': // cancelbuy
//vout.0: vin.1 value to original pubkey buyTx.vout[0].nValue -> [origpubkey]
//vout.1: normal output for change (if any)
//vout.n-1: opreturn [EVAL_ASSETS] ['o']
- if ( (nValue= AssetValidateBuyvin(eval,tmpprice,tmporigpubkey,CCaddr,origaddr,tx,assetid)) == 0 )
+ if ( (nValue= AssetValidateBuyvin(cp,eval,tmpprice,tmporigpubkey,CCaddr,origaddr,tx,assetid)) == 0 )
return(false);
else if ( ConstrainVout(tx.vout[0],0,origaddr,nValue) == 0 )
return eval->Invalid("invalid refund for cancelbuy");
//vout.4: normal output for change (if any)
//vout.n-1: opreturn [EVAL_ASSETS] ['B'] [assetid] [remaining asset required] [origpubkey]
preventCCvouts = 4;
- if ( (nValue= AssetValidateBuyvin(eval,totalprice,tmporigpubkey,CCaddr,origaddr,tx,assetid)) == 0 )
+ if ( (nValue= AssetValidateBuyvin(cp,eval,totalunits,tmporigpubkey,CCaddr,origaddr,tx,assetid)) == 0 )
return(false);
else if ( numvouts < 3 )
return eval->Invalid("not enough vouts for fillbuy");
return eval->Invalid("mismatched origpubkeys for fillbuy");
else
{
- if ( ConstrainVout(tx.vout[1],0,0,0) == 0 )
+ if ( nValue != tx.vout[0].nValue+tx.vout[1].nValue )
+ return eval->Invalid("locked value doesnt match vout0+1 fillbuy");
+ else if ( tx.vout[3].scriptPubKey.IsPayToCryptoCondition() != 0 )
+ {
+ if ( ConstrainVout(tx.vout[2],1,CCaddr,0) == 0 )
+ return eval->Invalid("vout2 doesnt go to origpubkey fillbuy");
+ else if ( inputs != tx.vout[2].nValue+tx.vout[3].nValue )
+ return eval->Invalid("asset inputs doesnt match vout2+3 fillbuy");
+ }
+ else if ( ConstrainVout(tx.vout[2],1,CCaddr,inputs) == 0 )
+ return eval->Invalid("vout2 doesnt match inputs fillbuy");
+ else if ( ConstrainVout(tx.vout[1],0,0,0) == 0 )
return eval->Invalid("vout1 is CC for fillbuy");
- else if ( ConstrainVout(tx.vout[2],1,CCaddr,0) == 0 )
- return eval->Invalid("vout2 is normal for fillbuy");
- else if ( ValidateAssetRemainder(remaining_price,tx.vout[0].nValue,nValue,tx.vout[1].nValue,tx.vout[2].nValue,totalprice) == false )
+ else if ( ValidateBidRemainder(remaining_price,tx.vout[0].nValue,nValue,tx.vout[1].nValue,tx.vout[2].nValue,totalunits) == false )
return eval->Invalid("mismatched remainder for fillbuy");
else if ( remaining_price != 0 )
{
- if ( remaining_price < 10000 )
- return eval->Invalid("dust vout0 to AssetsCCaddr for fillbuy");
- else if ( ConstrainVout(tx.vout[0],1,(char *)AssetsCCaddr,0) == 0 )
+ if ( ConstrainVout(tx.vout[0],1,cp->unspendableCCaddr,0) == 0 )
return eval->Invalid("mismatched vout0 AssetsCCaddr for fillbuy");
}
}
fprintf(stderr,"fillbuy validated\n");
break;
-
+ case 'e': // selloffer
+ break; // disable swaps
case 's': // selloffer
- case 'e': // exchange
//vin.0: normal input
- //vin.1: valid CC output for sale
+ //vin.1+: valid CC output for sale
//vout.0: vin.1 assetoshis output to CC to unspendable
- //vout.1: normal output for change (if any)
+ //vout.1: CC output for change (if any)
+ //vout.2: normal output for change (if any)
//'s'.vout.n-1: opreturn [EVAL_ASSETS] ['s'] [assetid] [amount of native coin required] [origpubkey]
//'e'.vout.n-1: opreturn [EVAL_ASSETS] ['e'] [assetid] [assetid2] [amount of asset2 required] [origpubkey]
+ preventCCvouts = 1;
if ( remaining_price == 0 )
return eval->Invalid("illegal null remaining_price for selloffer");
- else if ( ConstrainVout(tx.vout[0],1,(char *)AssetsCCaddr,0) == 0 )
+ if ( tx.vout[1].scriptPubKey.IsPayToCryptoCondition() != 0 )
+ {
+ preventCCvouts++;
+ if ( ConstrainVout(tx.vout[0],1,(char *)cp->unspendableCCaddr,0) == 0 )
+ return eval->Invalid("mismatched vout0 AssetsCCaddr for selloffer");
+ else if ( tx.vout[0].nValue+tx.vout[1].nValue != inputs )
+ return eval->Invalid("mismatched vout0+vout1 total for selloffer");
+ } else if ( ConstrainVout(tx.vout[0],1,(char *)cp->unspendableCCaddr,inputs) == 0 )
return eval->Invalid("mismatched vout0 AssetsCCaddr for selloffer");
- preventCCvouts = 1;
+ //fprintf(stderr,"remaining.%d for sell\n",(int32_t)remaining_price);
break;
case 'x': // cancel
//vout.0: vin.1 assetoshis to original pubkey CC sellTx/exchangeTx.vout[0].nValue -> [origpubkey]
//vout.1: normal output for change (if any)
//vout.n-1: opreturn [EVAL_ASSETS] ['x'] [assetid]
- if ( (assetoshis= AssetValidateSellvin(eval,tmpprice,tmporigpubkey,CCaddr,origaddr,tx,assetid)) == 0 )
+ if ( (assetoshis= AssetValidateSellvin(cp,eval,tmpprice,tmporigpubkey,CCaddr,origaddr,tx,assetid)) == 0 )
return(false);
else if ( ConstrainVout(tx.vout[0],1,CCaddr,assetoshis) == 0 )
return eval->Invalid("invalid vout for cancel");
break;
case 'S': // fillsell
- case 'E': // fillexchange
//vin.0: normal input
//vin.1: unspendable.(vout.0 assetoshis from selloffer) sellTx.vout[0]
//'S'.vin.2+: normal output that satisfies selloffer (*tx.vin[2])->nValue
- //'E'.vin.2+: valid CC assetid2 output that satisfies exchange (*tx.vin[2])->nValue
//vout.0: remaining assetoshis -> unspendable
//vout.1: vin.1 assetoshis to signer of vin.2 sellTx.vout[0].nValue -> any
//'S'.vout.2: vin.2 value to original pubkey [origpubkey]
- //'E'.vout.2: vin.2 assetoshis2 to original pubkey [origpubkey]
//vout.3: normal output for change (if any)
//'S'.vout.n-1: opreturn [EVAL_ASSETS] ['S'] [assetid] [amount of coin still required] [origpubkey]
- //'E'.vout.n-1: opreturn [EVAL_ASSETS] ['E'] [assetid vin0+1] [assetid vin2] [remaining asset2 required] [origpubkey]
- if ( funcid == 'E' )
- {
- if ( AssetExactAmounts(inputs,outputs,eval,tx,assetid2) == false )
- eval->Invalid("asset2 inputs != outputs");
- }
- if ( (assetoshis= AssetValidateSellvin(eval,totalprice,tmporigpubkey,CCaddr,origaddr,tx,assetid)) == 0 )
+ if ( (assetoshis= AssetValidateSellvin(cp,eval,totalunits,tmporigpubkey,CCaddr,origaddr,tx,assetid)) == 0 )
return(false);
else if ( numvouts < 3 )
- return eval->Invalid("not enough vouts for fill");
+ return eval->Invalid("not enough vouts for fillask");
else if ( tmporigpubkey != origpubkey )
- return eval->Invalid("mismatched origpubkeys for fill");
+ return eval->Invalid("mismatched origpubkeys for fillask");
else
{
- if ( ValidateAssetRemainder(remaining_price,tx.vout[0].nValue,nValue,tx.vout[1].nValue,tx.vout[2].nValue,totalprice) == false )
- return eval->Invalid("mismatched remainder for fill");
+ if ( assetoshis != tx.vout[0].nValue+tx.vout[1].nValue )
+ return eval->Invalid("locked value doesnt match vout0+1 fillask");
+ if ( ValidateAskRemainder(remaining_price,tx.vout[0].nValue,assetoshis,tx.vout[1].nValue,tx.vout[2].nValue,totalunits) == false )
+ return eval->Invalid("mismatched remainder for fillask");
else if ( ConstrainVout(tx.vout[1],1,0,0) == 0 )
return eval->Invalid("normal vout1 for fillask");
- else if ( funcid == 'E' && ConstrainVout(tx.vout[2],1,CCaddr,0) == 0 )
- return eval->Invalid("normal vout2 for fillask");
- else if ( funcid == 'S' && ConstrainVout(tx.vout[2],0,origaddr,0) == 0 )
- return eval->Invalid("CC vout2 for fillask");
+ else if ( ConstrainVout(tx.vout[2],0,origaddr,0) == 0 )
+ return eval->Invalid("normal vout1 for fillask");
else if ( remaining_price != 0 )
{
- if ( remaining_price < 10000 )
- return eval->Invalid("dust vout0 to AssetsCCaddr for fill");
- else if ( ConstrainVout(tx.vout[0],1,(char *)AssetsCCaddr,0) == 0 )
+ if ( ConstrainVout(tx.vout[0],1,(char *)cp->unspendableCCaddr,0) == 0 )
return eval->Invalid("mismatched vout0 AssetsCCaddr for fill");
}
}
fprintf(stderr,"fill validated\n");
break;
+ case 'E': // fillexchange
+ break; // disable asset swaps
+ //vin.0: normal input
+ //vin.1: unspendable.(vout.0 assetoshis from selloffer) sellTx.vout[0]
+ //vin.2+: valid CC assetid2 output that satisfies exchange (*tx.vin[2])->nValue
+ //vout.0: remaining assetoshis -> unspendable
+ //vout.1: vin.1 assetoshis to signer of vin.2 sellTx.vout[0].nValue -> any
+ //vout.2: vin.2+ assetoshis2 to original pubkey [origpubkey]
+ //vout.3: CC output for asset2 change (if any)
+ //vout.3/4: normal output for change (if any)
+ //vout.n-1: opreturn [EVAL_ASSETS] ['E'] [assetid vin0+1] [assetid vin2] [remaining asset2 required] [origpubkey]
+ if ( AssetExactAmounts(cp,inputs,1,outputs,eval,tx,assetid2) == false )
+ eval->Invalid("asset2 inputs != outputs");
+ if ( (assetoshis= AssetValidateSellvin(cp,eval,totalunits,tmporigpubkey,CCaddr,origaddr,tx,assetid)) == 0 )
+ return(false);
+ else if ( numvouts < 3 )
+ return eval->Invalid("not enough vouts for fillex");
+ else if ( tmporigpubkey != origpubkey )
+ return eval->Invalid("mismatched origpubkeys for fillex");
+ else
+ {
+ if ( assetoshis != tx.vout[0].nValue+tx.vout[1].nValue )
+ return eval->Invalid("locked value doesnt match vout0+1 fillex");
+ else if ( tx.vout[3].scriptPubKey.IsPayToCryptoCondition() != 0 )
+ {
+ if ( ConstrainVout(tx.vout[2],1,CCaddr,0) == 0 )
+ return eval->Invalid("vout2 doesnt go to origpubkey fillex");
+ else if ( inputs != tx.vout[2].nValue+tx.vout[3].nValue )
+ {
+ fprintf(stderr,"inputs %.8f != %.8f + %.8f\n",(double)inputs/COIN,(double)tx.vout[2].nValue/COIN,(double)tx.vout[3].nValue/COIN);
+ return eval->Invalid("asset inputs doesnt match vout2+3 fillex");
+ }
+ }
+ else if ( ConstrainVout(tx.vout[2],1,CCaddr,inputs) == 0 )
+ return eval->Invalid("vout2 doesnt match inputs fillex");
+ else if ( ConstrainVout(tx.vout[1],0,0,0) == 0 )
+ return eval->Invalid("vout1 is CC for fillex");
+ fprintf(stderr,"assets vout0 %llu, vin1 %llu, vout2 %llu -> orig, vout1 %llu, total %llu\n",(long long)tx.vout[0].nValue,(long long)assetoshis,(long long)tx.vout[2].nValue,(long long)tx.vout[1].nValue,(long long)totalunits);
+ if ( ValidateSwapRemainder(remaining_price,tx.vout[0].nValue,assetoshis,tx.vout[1].nValue,tx.vout[2].nValue,totalunits) == false )
+ return eval->Invalid("mismatched remainder for fillex");
+ else if ( ConstrainVout(tx.vout[1],1,0,0) == 0 )
+ return eval->Invalid("normal vout1 for fillex");
+ else if ( remaining_price != 0 )
+ {
+ if ( ConstrainVout(tx.vout[0],1,(char *)cp->unspendableCCaddr,0) == 0 )
+ return eval->Invalid("mismatched vout0 AssetsCCaddr for fillex");
+ }
+ }
+ fprintf(stderr,"fill validated\n");
+ break;
}
return(PreventCC(eval,tx,preventCCvins,numvins,preventCCvouts,numvouts));
}
-bool ProcessAssets(Eval* eval, std::vector<uint8_t> paramsNull,const CTransaction &ctx, unsigned int nIn)
-{
- static uint256 zero,prevtxid;
- CTransaction createTx; uint256 txid,assetid,assetid2,hashBlock; uint8_t funcid; int32_t i,n; uint64_t amount; std::vector<uint8_t> origpubkey;
- txid = ctx.GetHash();
- if ( txid == prevtxid )
- return(true);
- fprintf(stderr,"ProcessAssets\n");
- if ( paramsNull.size() != 0 ) // Don't expect params
- return eval->Invalid("Cannot have params");
- else if ( (n= ctx.vout.size()) == 0 )
- return eval->Invalid("no-vouts");
- else if ( (funcid= DecodeAssetOpRet(ctx.vout[n-1].scriptPubKey,assetid,assetid2,amount,origpubkey)) == 0 )
- return eval->Invalid("Invalid opreturn payload");
- else if ( eval->GetTxUnconfirmed(assetid,createTx,hashBlock) == 0 )
- return eval->Invalid("cant find asset create txid");
- else if ( assetid2 != zero && eval->GetTxUnconfirmed(assetid2,createTx,hashBlock) == 0 )
- return eval->Invalid("cant find asset2 create txid");
- else if ( AssetValidate(eval,ctx,n,funcid,assetid,assetid2,amount,origpubkey) != 0 )
- {
- prevtxid = txid;
- fprintf(stderr,"AssetValidate passed\n");
- return(true);
- }
- fprintf(stderr,"AssetValidate failed\n");
- return(false);
-}
projects / VerusCoin.git / blobdiff