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Adding dual daemon import and gateway import. (#21)

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This commit is contained in:
Mihailo Milenkovic
2019-04-10 13:09:11 +02:00
committed by GitHub
parent d02edd2d77
commit 2872c88795
18 changed files with 2440 additions and 369 deletions
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589
src/cc/import.cpp
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@@ -19,19 +19,10 @@
#include "crosschain.h"
#include "primitives/transaction.h"
#include "cc/CCinclude.h"
#include <openssl/sha.h>
//#define LEV_INFO 0
//#define LEV_DEBUG1 1
//#define LOGSTREAM(category, level, logoperator) { std::ostringstream stream; logoperator; for(int i = 0; i < level; i ++) if( LogAcceptCategory( (std::string(category) + (level > 0 ? std::string("-")+std::to_string(level) : std::string("") )).c_str() ) ) LogPrintStr(stream.str()); }
/*
* CC Eval method for import coin.
*
* This method should control every parameter of the ImportCoin transaction, since it has no signature
* to protect it from malleability.
##### 0xffffffff is a special CCid for single chain/dual daemon imports
*/
#include "key_io.h"
#define CODA_BURN_ADDRESS "KPrrRoPfHOnNpZZQ6laHXdQDkSQDkVHaN0V+LizLlHxz7NaA59sBAAAA"
extern std::string ASSETCHAINS_SELFIMPORT;
extern uint16_t ASSETCHAINS_CODAPORT,ASSETCHAINS_BEAMPORT;
@@ -41,10 +32,97 @@ extern uint8_t ASSETCHAINS_OVERRIDE_PUBKEY33[33];
uint256 BitcoinGetProofMerkleRoot(const std::vector<uint8_t> &proofData, std::vector<uint256> &txids);
uint256 GatewaysReverseScan(uint256 &txid, int32_t height, uint256 reforacletxid, uint256 batontxid);
int32_t GatewaysCointxidExists(struct CCcontract_info *cp, uint256 cointxid);
uint8_t DecodeGatewaysBindOpRet(char *depositaddr, const CScript &scriptPubKey, std::string &coin, uint256 &tokenid, int64_t &totalsupply, uint256 &oracletxid, uint8_t &M, uint8_t &N, std::vector<CPubKey> &pubkeys, uint8_t &taddr, uint8_t &prefix, uint8_t &prefix2);
uint8_t DecodeGatewaysBindOpRet(char *depositaddr,const CScript &scriptPubKey,uint256 &tokenid,std::string &coin,int64_t &totalsupply,uint256 &oracletxid,uint8_t &M,uint8_t &N,std::vector<CPubKey> &gatewaypubkeys,uint8_t &taddr,uint8_t &prefix,uint8_t &prefix2,uint8_t &wiftype);
char *nonportable_path(char *str)
{
int32_t i;
for (i=0; str[i]!=0; i++)
if ( str[i] == '/' )
str[i] = '\\';
return(str);
}
char *portable_path(char *str)
{
#ifdef _WIN32
return(nonportable_path(str));
#else
#ifdef __PNACL
/*int32_t i,n;
if ( str[0] == '/' )
return(str);
else
{
n = (int32_t)strlen(str);
for (i=n; i>0; i--)
str[i] = str[i-1];
str[0] = '/';
str[n+1] = 0;
}*/
#endif
return(str);
#endif
}
void *loadfile(char *fname,uint8_t **bufp,long *lenp,long *allocsizep)
{
FILE *fp;
long filesize,buflen = *allocsizep;
uint8_t *buf = *bufp;
*lenp = 0;
if ( (fp= fopen(portable_path(fname),"rb")) != 0 )
{
fseek(fp,0,SEEK_END);
filesize = ftell(fp);
if ( filesize == 0 )
{
fclose(fp);
*lenp = 0;
//printf("loadfile null size.(%s)\n",fname);
return(0);
}
if ( filesize > buflen )
{
*allocsizep = filesize;
*bufp = buf = (uint8_t *)realloc(buf,(long)*allocsizep+64);
}
rewind(fp);
if ( buf == 0 )
printf("Null buf ???\n");
else
{
if ( fread(buf,1,(long)filesize,fp) != (unsigned long)filesize )
printf("error reading filesize.%ld\n",(long)filesize);
buf[filesize] = 0;
}
fclose(fp);
*lenp = filesize;
//printf("loaded.(%s)\n",buf);
} //else printf("OS_loadfile couldnt load.(%s)\n",fname);
return(buf);
}
void *filestr(long *allocsizep,char *_fname)
{
long filesize = 0; char *fname,*buf = 0; void *retptr;
*allocsizep = 0;
fname = (char *)malloc(strlen(_fname)+1);
strcpy(fname,_fname);
retptr = loadfile(fname,(uint8_t **)&buf,&filesize,allocsizep);
free(fname);
return(retptr);
}
// ac_import=chain support:
// encode opret for gateways import
CScript EncodeImportTxOpRet(uint32_t targetCCid, std::string coin, std::vector<CPubKey> publishers, std::vector<uint256>txids, int32_t height, uint256 cointxid, int32_t claimvout, std::string rawburntx, std::vector<uint8_t>proof, CPubKey destpub, int64_t amount)
{
CScript opret;
opret << OP_RETURN << E_MARSHAL(ss << targetCCid << coin << publishers << txids << height << cointxid << claimvout << rawburntx << proof << destpub << amount);
return(opret);
}
CScript EncodeGatewaysImportTxOpRet(uint32_t targetCCid, std::string coin, uint256 bindtxid, std::vector<CPubKey> publishers, std::vector<uint256>txids, int32_t height, uint256 cointxid, int32_t claimvout, std::string rawburntx, std::vector<uint8_t>proof, CPubKey destpub, int64_t amount)
{
CScript opret;
@@ -52,169 +130,132 @@ CScript EncodeGatewaysImportTxOpRet(uint32_t targetCCid, std::string coin, uint2
return(opret);
}
bool ImportCoinGatewaysVerify(char *refdepositaddr, uint256 oracletxid, int32_t claimvout, std::string refcoin, uint256 burntxid, const std::string rawburntx, std::vector<uint8_t>proof, uint256 merkleroot)
CScript EncodeCodaImportTxOpRet(uint32_t targetCCid, std::string coin, std::string burntx, uint256 bindtxid, CPubKey destpub, int64_t amount)
{
CScript opret;
opret << OP_RETURN << E_MARSHAL(ss << targetCCid << burntx << bindtxid << destpub << amount);
return(opret);
}
cJSON* CodaRPC(char **retstr,char const *arg0,char const *arg1,char const *arg2,char const *arg3,char const *arg4,char const *arg5)
{
char cmdstr[5000],fname[256],*jsonstr;
long fsize;
cJSON *retjson=NULL;
sprintf(fname,"/tmp/coda.%s",arg0);
sprintf(cmdstr,"coda.exe client %s %s %s %s %s %s > %s 2>&1",arg0,arg1,arg2,arg3,arg4,arg5,fname);
*retstr = 0;
if (system(cmdstr)<0) return (retjson);
if ( (jsonstr=(char *)filestr(&fsize,fname)) != 0 )
{
jsonstr[strlen(jsonstr)-1]='\0';
if ( (strncmp(jsonstr,"Merkle List of transactions:",28)!=0) || (retjson= cJSON_Parse(jsonstr+29)) == 0)
*retstr=jsonstr;
else free(jsonstr);
}
return(retjson);
}
bool ImportCoinGatewaysVerify(CTransaction oracletx, int32_t claimvout, std::string refcoin, uint256 burntxid, const std::string rawburntx, std::vector<uint8_t>proof, uint256 merkleroot)
{
std::vector<uint256> txids;
uint256 proofroot, hashBlock, foundtxid = zeroid;
CTransaction oracletx, burntx;
uint256 proofroot;
std::string name, description, format;
char destaddr[64], destpubaddr[64], claimaddr[64];
int32_t i, numvouts;
int64_t nValue = 0;
if (myGetTransaction(oracletxid, oracletx, hashBlock) == 0 || (numvouts = oracletx.vout.size()) <= 0)
{
LOGSTREAM("importcoin", CCLOG_INFO, stream << "ImportCoinGatewaysVerify can't find oracletxid=" << oracletxid.GetHex() << std::endl);
return false;
}
if (DecodeOraclesCreateOpRet(oracletx.vout[numvouts - 1].scriptPubKey, name, description, format) != 'C' || name != refcoin)
{
LOGSTREAM("importcoin", CCLOG_INFO, stream << "ImportCoinGatewaysVerify mismatched oracle name=" << name.c_str() << " != " << refcoin.c_str() << std::endl);
return false;
}
proofroot = BitcoinGetProofMerkleRoot(proof, txids);
if (proofroot != merkleroot)
{
LOGSTREAM("importcoin", CCLOG_INFO, stream << "ImportCoinGatewaysVerify mismatched proof merkleroot=" << proofroot.GetHex() << " and oracles merkleroot=" << merkleroot.GetHex() << std::endl);
return false;
}
// check the burntxid is in the proof:
if (std::find(txids.begin(), txids.end(), burntxid) == txids.end()) {
LOGSTREAM("importcoin", CCLOG_INFO, stream << "ImportCoinGatewaysVerify invalid proof for this burntxid=" << burntxid.GetHex() << std::endl);
return false;
}
/*
if (DecodeHexTx(burntx, rawburntx) != 0)
{
Getscriptaddress(claimaddr, burntx.vout[claimvout].scriptPubKey);
Getscriptaddress(destpubaddr, CScript() << ParseHex(HexStr(destpub)) << OP_CHECKSIG);
if (strcmp(claimaddr, destpubaddr) == 0)
{
for (i = 0; i<numvouts; i++)
{
Getscriptaddress(destaddr, burntx.vout[i].scriptPubKey);
if (strcmp(refdepositaddr, destaddr) == 0)
{
foundtxid = burntx.GetHash();
nValue = burntx.vout[i].nValue;
break;
}
}
}
else fprintf(stderr, "claimaddr.(%s) != destpubaddr.(%s)\n", claimaddr, destpubaddr);
}*/
/*
if (foundtxid == burntxid) {
LOGSTREAM("importcoin", LEV_DEBUG1, stream << "verified proof for burntxid=" << burntxid.GetHex() << " in merkleroot merkleroot" << std::endl);
return(nValue);
}
else {
LOGSTREAM("importcoin", LEV_INFO, stream << "verified proof for burntxid=" << burntxid.GetHex() << " in merkleroot merkleroot" << std::endl);
fprintf(stderr, "(%s) != (%s) or txid %s mismatch.%d or script mismatch\n", refdepositaddr, destaddr, uint256_str(str, foundtxid), foundtxid != burntxid);
*/
LOGSTREAM("importcoin", CCLOG_DEBUG1, stream << "verified proof for burntxid=" << burntxid.GetHex() << " in trusted merkleroot" << std::endl);
return true;
}
// make import tx with burntx and its proof of existence
std::string MakeGatewaysImportTx(uint64_t txfee, uint256 bindtxid, int32_t height, std::string refcoin, std::vector<uint8_t>proof, std::string rawburntx, int32_t ivout, uint256 burntxid)
{
CMutableTransaction mtx = CreateNewContextualCMutableTransaction(Params().GetConsensus(), komodo_nextheight());
CTransaction burntx, bindtx;
CPubKey mypk, gatewayspk;
uint256 oracletxid, merkleroot, mhash, hashBlock, tokenid, txid;
int64_t totalsupply;
int32_t i, m, n, numvouts;
uint8_t M, N, taddr, prefix, prefix2;
std::string coin;
struct CCcontract_info *cp, C;
std::vector<CPubKey> pubkeys, publishers;
std::vector<uint256>txids;
char depositaddr[64], txidaddr[64];
// std::string MakeGatewaysImportTx(uint64_t txfee, uint256 oracletxid, int32_t height, std::string refcoin, std::vector<uint8_t> proof, std::string rawburntx, int32_t ivout, uint256 burntxid,std::string destaddr)
// {
// CMutableTransaction burntx = CreateNewContextualCMutableTransaction(Params().GetConsensus(), komodo_nextheight());
// CTransaction oracletx,regtx; CPubKey regpk;
// uint256 proofroot,txid,tmporacletxid,merkleroot,mhash,hashBlock; int32_t i,m,n=0,numvouts;
// std::string name,desc,format; std::vector<CTxOut> vouts;
// std::vector<CPubKey> pubkeys; std::vector<uint256>txids;
// char markeraddr[64]; int64_t datafee;
// std::vector<std::pair<CAddressUnspentKey, CAddressUnspentValue> > unspentOutputs;
cp = CCinit(&C, EVAL_GATEWAYS);
/*if (txfee == 0)
txfee = 10000;
mypk = pubkey2pk(Mypubkey());
gatewayspk = GetUnspendable(cp, 0); */
if (!E_UNMARSHAL(ParseHex(rawburntx), ss >> burntx))
return std::string("");
CAmount amount = GetCoinImportValue(burntx); // equal to int64_t
LOGSTREAM("importcoin", CCLOG_DEBUG1, stream << "MakeGatewaysImportTx height=" << height << " coin=" << refcoin << " amount=" << (double)amount / COIN << " pubkeys num=" << pubkeys.size() << std::endl);
if (GetTransaction(bindtxid, bindtx, hashBlock, false) == 0 || (numvouts = bindtx.vout.size()) <= 0)
{
LOGSTREAM("importcoin", CCLOG_INFO, stream << "MakeGatewaysImportTx cant find bindtxid=" << bindtxid.GetHex() << std::endl);
return("");
}
/* if (DecodeGatewaysBindOpRet(depositaddr, bindtx.vout[numvouts - 1].scriptPubKey, coin, tokenid, totalsupply, oracletxid, M, N, pubkeys, taddr, prefix, prefix2) != 'B' || refcoin != coin)
{
LOGSTREAM("importcoin", CCLOG_INFO, stream << "MakeGatewaysImportTx invalid coin - bindtxid=" << bindtxid.GetHex() << " coin=" << coin.c_str() << std::endl);
return("");
} eliminate link err */
n = (int32_t)pubkeys.size();
merkleroot = zeroid;
for (i = m = 0; i < n; i++)
{
LOGSTREAM("importcoin", CCLOG_INFO, stream << "MakeGatewaysImportTx using pubkeys[" << i << "]=" << HexStr(pubkeys[i]) << std::endl);
if ((mhash = GatewaysReverseScan(txid, height, oracletxid, OraclesBatontxid(oracletxid, pubkeys[i]))) != zeroid)
{
if (merkleroot == zeroid)
merkleroot = mhash, m = 1;
else if (mhash == merkleroot)
m ++;
publishers.push_back(pubkeys[i]);
txids.push_back(txid);
}
}
LOGSTREAM("importcoin", CCLOG_DEBUG1, stream << "MakeGatewaysImportTx burntxid=" << burntxid.GetHex() << " nodes m=" << m << " of n=" << n << std::endl);
if (merkleroot == zeroid || m < n / 2) // none or less than half oracle nodes sent merkleroot
{
LOGSTREAM("importcoin", CCLOG_INFO, stream << "MakeGatewaysImportTx couldnt find merkleroot for block height=" << height << "coin=" << coin.c_str() << " oracleid=" << oracletxid.GetHex() << " m=" << m << " vs n=" << n << std::endl );
return("");
}
if (GatewaysCointxidExists(cp, burntxid) != 0)
{
LOGSTREAM("importcoin", CCLOG_INFO, stream << "MakeGatewaysImportTx burntxid=" << burntxid.GetHex() << " already exists" << std::endl);
return("");
}
if (!ImportCoinGatewaysVerify(depositaddr, oracletxid, ivout, coin, burntxid, rawburntx, proof, merkleroot))
{
LOGSTREAM("importcoin", CCLOG_INFO, stream << "MakeGatewaysImportTx could not validate burntx, txid=" << burntxid.GetHex() << std::endl);
return("");
}
std::vector<uint256> leaftxids;
BitcoinGetProofMerkleRoot(proof, leaftxids);
MerkleBranch newBranch(0, leaftxids);
TxProof txProof = std::make_pair(burntxid, newBranch);
std::vector<CTxOut> vouts;
return HexStr(E_MARSHAL(ss << MakeImportCoinTransaction(txProof, burntx, vouts)));
/*if (AddNormalinputs(mtx, mypk, 3 * txfee, 4) > 0)
{
mtx.vout.push_back(MakeCC1vout(cp->evalcode, txfee, destpub));
mtx.vout.push_back(CTxOut(txfee, CScript() << ParseHex(HexStr(CCtxidaddr(txidaddr, burntxid))) << OP_CHECKSIG));
return(FinalizeCCTx(0, cp, mtx, mypk, txfee, EncodeGatewaysImportTxOpRet(0xFFFFFFFF, coin, bindtxid, publishers, txids, height, burntxid, ivout, rawburntx, proof, destpub, amount)));
}
LOGSTREAM("importcoin", LEV_INFO, stream << "MakeGatewaysImportTx coud not find normal imputs" << std::endl);*/
return("");
}
// if (!E_UNMARSHAL(ParseHex(rawburntx), ss >> burntx))
// return std::string("");
// CAmount amount = GetCoinImportValue(burntx); // equal to int64_t
// LOGSTREAM("importcoin", CCLOG_DEBUG1, stream << "MakeGatewaysImportTx height=" << height << " coin=" << refcoin << " amount=" << (double)amount / COIN << " pubkeys num=" << pubkeys.size() << std::endl);
// if (GetTransaction(oracletxid, oracletx, hashBlock, false) == 0 || (numvouts = oracletx.vout.size()) <= 0)
// {
// LOGSTREAM("importcoin", CCLOG_INFO, stream << "MakeGatewaysImportTx cant find oracletxid=" << oracletxid.GetHex() << std::endl);
// return("");
// }
// if (DecodeOraclesCreateOpRet(oracletx.vout[numvouts - 1].scriptPubKey,name,desc,format) != 'C')
// {
// LOGSTREAM("importcoin", CCLOG_INFO, stream << "MakeGatewaysImportTx invalid oracle tx. oracletxid=" << oracletxid.GetHex() << std::endl);
// return("");
// }
// if (name!=refcoin || format!="Ihh")
// {
// LOGSTREAM("importcoin", CCLOG_INFO, stream << "MakeGatewaysImportTx invalid oracle name or format tx. oracletxid=" << oracletxid.GetHex() << " name=" << name << " format=" << format << std::endl);
// return("");
// }
// CCtxidaddr(markeraddr,oracletxid);
// SetCCunspents(unspentOutputs,markeraddr);
// for (std::vector<std::pair<CAddressUnspentKey, CAddressUnspentValue> >::const_iterator it=unspentOutputs.begin(); it!=unspentOutputs.end(); it++)
// {
// txid = it->first.txhash;
// if ( GetTransaction(txid,regtx,hashBlock,false) != 0 && regtx.vout.size() > 0
// && DecodeOraclesOpRet(regtx.vout[regtx.vout.size()-1].scriptPubKey,tmporacletxid,regpk,datafee) == 'R' && oracletxid == tmporacletxid )
// {
// pubkeys.push_back(regpk);
// n++;
// }
// }
// merkleroot = zeroid;
// for (i = m = 0; i < n; i++)
// {
// LOGSTREAM("importcoin", CCLOG_DEBUG1, stream << "MakeGatewaysImportTx using pubkeys[" << i << "]=" << HexStr(pubkeys[i]) << std::endl);
// if ((mhash = CCOraclesReverseScan("importcoind-1",txid, height, oracletxid, OraclesBatontxid(oracletxid, pubkeys[i]))) != zeroid)
// {
// if (merkleroot == zeroid)
// merkleroot = mhash, m = 1;
// else if (mhash == merkleroot)
// m ++;
// txids.push_back(txid);
// }
// }
// LOGSTREAM("importcoin", CCLOG_DEBUG1, stream << "MakeGatewaysImportTx burntxid=" << burntxid.GetHex() << " nodes m=" << m << " of n=" << n << std::endl);
// if (merkleroot == zeroid || m < n / 2) // none or less than half oracle nodes sent merkleroot
// {
// LOGSTREAM("importcoin", CCLOG_INFO, stream << "MakeGatewaysImportTx couldnt find merkleroot for block height=" << height << "coin=" << refcoin.c_str() << " oracleid=" << oracletxid.GetHex() << " m=" << m << " vs n=" << n << std::endl );
// return("");
// }
// proofroot = BitcoinGetProofMerkleRoot(proof, txids);
// if (proofroot != merkleroot)
// {
// LOGSTREAM("importcoin", CCLOG_INFO, stream << "MakeGatewaysImportTx mismatched proof merkleroot=" << proofroot.GetHex() << " and oracles merkleroot=" << merkleroot.GetHex() << std::endl);
// return("");
// }
// // check the burntxid is in the proof:
// if (std::find(txids.begin(), txids.end(), burntxid) == txids.end()) {
// LOGSTREAM("importcoin", CCLOG_INFO, stream << "MakeGatewaysImportTx invalid proof for this burntxid=" << burntxid.GetHex() << std::endl);
// return("");
// }
// burntx.vout.push_back(MakeBurnOutput(amount,0xffffffff,refcoin,vouts,proof,oracletxid,height));
// std::vector<uint256> leaftxids;
// BitcoinGetProofMerkleRoot(proof, leaftxids);
// MerkleBranch newBranch(0, leaftxids);
// TxProof txProof = std::make_pair(burntxid, newBranch);
// CTxDestination dest = DecodeDestination(destaddr.c_str());
// CScript scriptPubKey = GetScriptForDestination(dest);
// vouts.push_back(CTxOut(amount,scriptPubKey));
// return HexStr(E_MARSHAL(ss << MakeImportCoinTransaction(txProof, burntx, vouts)));
// }
// makes source tx for self import tx
std::string MakeSelfImportSourceTx(CTxDestination &dest, int64_t amount, CMutableTransaction &mtx)
@@ -332,6 +373,90 @@ int32_t GetSelfimportProof(std::string source, CMutableTransaction &mtx, CScript
return 0;
}
// make import tx with burntx and dual daemon
std::string MakeCodaImportTx(uint64_t txfee, std::string receipt, std::string srcaddr, std::vector<CTxOut> vouts)
{
CMutableTransaction mtx = CreateNewContextualCMutableTransaction(Params().GetConsensus(), komodo_nextheight()),burntx = CreateNewContextualCMutableTransaction(Params().GetConsensus(), komodo_nextheight());
CPubKey mypk; uint256 codaburntxid; std::vector<unsigned char> dummyproof;
int32_t i,numvouts,n,m; std::string coin,error; struct CCcontract_info *cp, C;
cJSON *result,*tmp,*tmp1; unsigned char hash[SHA256_DIGEST_LENGTH+1];
char out[SHA256_DIGEST_LENGTH*2+1],*retstr,*destaddr,*receiver; TxProof txProof; uint64_t amount;
cp = CCinit(&C, EVAL_GATEWAYS);
if (txfee == 0)
txfee = 10000;
mypk = pubkey2pk(Mypubkey());
SHA256_CTX sha256;
SHA256_Init(&sha256);
SHA256_Update(&sha256, receipt.c_str(), receipt.size());
SHA256_Final(hash, &sha256);
for(i = 0; i < SHA256_DIGEST_LENGTH; i++)
{
sprintf(out + (i * 2), "%02x", hash[i]);
}
out[65]='\0';
LOGSTREAM("importcoin", CCLOG_DEBUG1, stream << "MakeCodaImportTx: hash=" << out << std::endl);
codaburntxid.SetHex(out);
LOGSTREAM("importcoin", CCLOG_DEBUG1, stream << "MakeCodaImportTx: receipt=" << receipt << " codaburntxid=" << codaburntxid.GetHex().data() << " amount=" << (double)amount / COIN << std::endl);
result=CodaRPC(&retstr,"prove-payment","-address",srcaddr.c_str(),"-receipt-chain-hash",receipt.c_str(),"");
if (result==0)
{
if (retstr!=0)
{
CCerror=std::string("CodaRPC: ")+retstr;
free(retstr);
}
return("");
}
else
{
if ((tmp=jobj(jitem(jarray(&n,result,(char *)"payments"),0),(char *)"payload"))!=0 && (destaddr=jstr(jobj(tmp,(char *)"common"),(char *)"memo"))!=0 &&
(receiver=jstr(jitem(jarray(&m,tmp,(char *)"body"),1),(char *)"receiver"))!=0 && (amount=j64bits(jitem(jarray(&m,tmp,(char *)"body"),1),(char *)"amount"))!=0)
{
LOGSTREAM("importcoin", CCLOG_DEBUG1, stream << "MakeCodaImportTx: receiver=" << receiver << " destaddr=" << destaddr << " amount=" << amount << std::endl);
if (strcmp(receiver,CODA_BURN_ADDRESS)!=0)
{
CCerror="MakeCodaImportTx: invalid burn address, coins do not go to predefined burn address - ";
CCerror+=CODA_BURN_ADDRESS;
LOGSTREAM("importcoin", CCLOG_INFO, stream << CCerror << std::endl);
free(result);
return("");
}
CTxDestination dest = DecodeDestination(destaddr);
CScript scriptPubKey = GetScriptForDestination(dest);
if (vouts[0]!=CTxOut(amount*COIN,scriptPubKey))
{
CCerror="MakeCodaImportTx: invalid destination address, burnTx memo!=importTx destination";
LOGSTREAM("importcoin", CCLOG_INFO, stream << CCerror << std::endl);
free(result);
return("");
}
if (amount*COIN!=vouts[0].nValue)
{
CCerror="MakeCodaImportTx: invalid amount, burnTx amount!=importTx amount";
LOGSTREAM("importcoin", CCLOG_INFO, stream << CCerror << std::endl);
free(result);
return("");
}
burntx.vin.push_back(CTxIn(codaburntxid,0,CScript()));
burntx.vout.push_back(MakeBurnOutput(amount*COIN,0xffffffff,"CODA",vouts,dummyproof,srcaddr,receipt));
return HexStr(E_MARSHAL(ss << MakeImportCoinTransaction(txProof,burntx,vouts)));
}
else
{
CCerror="MakeCodaImportTx: invalid Coda burn tx";
LOGSTREAM("importcoin", CCLOG_INFO, stream << CCerror << std::endl);
free(result);
return("");
}
}
CCerror="MakeCodaImportTx: error fetching Coda tx";
LOGSTREAM("importcoin", CCLOG_INFO, stream << CCerror << std::endl);
free(result);
return("");
}
// use proof from the above functions to validate the import
int32_t CheckBEAMimport(TxProof proof,std::vector<uint8_t> rawproof,CTransaction burnTx,std::vector<CTxOut> payouts)
@@ -340,17 +465,135 @@ int32_t CheckBEAMimport(TxProof proof,std::vector<uint8_t> rawproof,CTransaction
return(-1);
}
int32_t CheckCODAimport(TxProof proof,std::vector<uint8_t> rawproof,CTransaction burnTx,std::vector<CTxOut> payouts)
int32_t CheckCODAimport(CTransaction importTx,CTransaction burnTx,std::vector<CTxOut> payouts,std::string srcaddr,std::string receipt)
{
cJSON *result,*tmp,*tmp1; char *retstr,out[SHA256_DIGEST_LENGTH*2+1]; unsigned char hash[SHA256_DIGEST_LENGTH+1]; int i,n,m;
SHA256_CTX sha256; uint256 codaburntxid; char *destaddr,*receiver; uint64_t amount;
// check with dual-CODA daemon via ASSETCHAINS_CODAPORT for validity of burnTx
return(-1);
SHA256_Init(&sha256);
SHA256_Update(&sha256, receipt.c_str(), receipt.size());
SHA256_Final(hash, &sha256);
for(i = 0; i < SHA256_DIGEST_LENGTH; i++)
{
sprintf(out + (i * 2), "%02x", hash[i]);
}
out[65]='\0';
codaburntxid.SetHex(out);
result=CodaRPC(&retstr,"prove-payment","-address",srcaddr.c_str(),"-receipt-chain-hash",receipt.c_str(),"");
if (result==0)
{
LOGSTREAM("importcoin", CCLOG_INFO, stream << "CodaRPC error: " << retstr << std::endl);
free(retstr);
return (-1);
}
else
{
if ((tmp=jobj(jitem(jarray(&n,result,(char *)"payments"),0),(char *)"payload"))==0 || (destaddr=jstr(jobj(tmp,(char *)"common"),(char *)"memo"))==0 ||
(receiver=jstr(jitem(jarray(&m,tmp,(char *)"body"),1),(char *)"receiver"))==0 || (amount=j64bits(jitem(jarray(&m,tmp,(char *)"body"),1),(char *)"amount"))==0)
{
LOGSTREAM("importcoin", CCLOG_INFO, stream << "Invalid Coda burn tx" << jprint(result,1) << std::endl);
free(result);
return (-1);
}
CTxDestination dest = DecodeDestination(destaddr);
CScript scriptPubKey = GetScriptForDestination(dest);
if (payouts[0]!=CTxOut(amount*COIN,scriptPubKey));
{
LOGSTREAM("importcoin", CCLOG_INFO, stream << "Destination address in burn tx does not match destination in import tx" << std::endl);
free(result);
return (-1);
}
if (strcmp(receiver,CODA_BURN_ADDRESS)!=0)
{
LOGSTREAM("importcoin", CCLOG_INFO, stream << "Invalid burn address " << jstr(tmp1,(char *)"receiver") << std::endl);
free(result);
return (-1);
}
if (amount*COIN!=payouts[0].nValue)
{
LOGSTREAM("importcoin", CCLOG_INFO, stream << "Burn amount and import amount not matching, " << j64bits(tmp,(char *)"amount") << " - " << payouts[0].nValue/COIN << std::endl);
free(result);
return (-1);
}
if (burnTx.vin[0].prevout.hash!=codaburntxid || importTx.vin[0].prevout.hash!=burnTx.GetHash())
{
LOGSTREAM("importcoin", CCLOG_INFO, stream << "Invalid import/burn tx vin" << std::endl);
free(result);
return (-1);
}
free(result);
}
return(0);
}
int32_t CheckGATEWAYimport(TxProof proof,std::vector<uint8_t> rawproof,CTransaction burnTx,std::vector<CTxOut> payouts)
int32_t CheckGATEWAYimport(CTransaction importTx,CTransaction burnTx,std::string refcoin,std::vector<uint8_t> proof,
uint256 bindtxid,std::vector<CPubKey> publishers,std::vector<uint256> txids,int32_t height,int32_t burnvout,std::string rawburntx,CPubKey destpub)
{
// CTransaction oracletx,regtx; CPubKey regpk;
// uint256 proofroot,txid,tmporacletxid,merkleroot,mhash,hashBlock; int32_t i,m,n=0,numvouts;
// std::string name,desc,format; std::vector<CTxOut> vouts;
// std::vector<CPubKey> pubkeys; std::vector<uint256>txids;
// char markeraddr[64]; int64_t datafee;
// std::vector<std::pair<CAddressUnspentKey, CAddressUnspentValue> > unspentOutputs;
// ASSETCHAINS_SELFIMPORT is coin
// check for valid burn from external coin blockchain and if valid return(0);
return(-1);
// if (GetTransaction(oracletxid, oracletx, hashBlock, false) == 0 || (numvouts = oracletx.vout.size()) <= 0)
// {
// LOGSTREAM("importcoin", CCLOG_INFO, stream << "CheckGATEWAYimport cant find oracletxid=" << oracletxid.GetHex() << std::endl);
// return(-1);
// }
// if (DecodeOraclesCreateOpRet(oracletx.vout[numvouts - 1].scriptPubKey,name,desc,format) != 'C')
// {
// LOGSTREAM("importcoin", CCLOG_INFO, stream << "CheckGATEWAYimport invalid oracle tx. oracletxid=" << oracletxid.GetHex() << std::endl);
// return(-1);
// }
// if (name!=refcoin || format!="Ihh")
// {
// LOGSTREAM("importcoin", CCLOG_INFO, stream << "CheckGATEWAYimport invalid oracle name or format tx. oracletxid=" << oracletxid.GetHex() << " name=" << name << " format=" << format << std::endl);
// return(-1);
// }
// CCtxidaddr(markeraddr,oracletxid);
// SetCCunspents(unspentOutputs,markeraddr);
// for (std::vector<std::pair<CAddressUnspentKey, CAddressUnspentValue> >::const_iterator it=unspentOutputs.begin(); it!=unspentOutputs.end(); it++)
// {
// txid = it->first.txhash;
// if ( GetTransaction(txid,regtx,hashBlock,false) != 0 && regtx.vout.size() > 0
// && DecodeOraclesOpRet(regtx.vout[regtx.vout.size()-1].scriptPubKey,tmporacletxid,regpk,datafee) == 'R' && oracletxid == tmporacletxid )
// {
// pubkeys.push_back(regpk);
// n++;
// }
// }
// merkleroot = zeroid;
// for (i = m = 0; i < n; i++)
// {
// if ((mhash = CCOraclesReverseScan("importcoind-1",txid, height, oracletxid, OraclesBatontxid(oracletxid, pubkeys[i]))) != zeroid)
// {
// if (merkleroot == zeroid)
// merkleroot = mhash, m = 1;
// else if (mhash == merkleroot)
// m ++;
// txids.push_back(txid);
// }
// }
// if (merkleroot == zeroid || m < n / 2) // none or less than half oracle nodes sent merkleroot
// {
// LOGSTREAM("importcoin", CCLOG_INFO, stream << "CheckGATEWAYimport couldnt find merkleroot for block height=" << height << "coin=" << refcoin.c_str() << " oracleid=" << oracletxid.GetHex() << " m=" << m << " vs n=" << n << std::endl );
// return(-1);
// }
// proofroot = BitcoinGetProofMerkleRoot(proof, txids);
// if (proofroot != merkleroot)
// {
// LOGSTREAM("importcoin", CCLOG_INFO, stream << "CheckGATEWAYimport mismatched proof merkleroot=" << proofroot.GetHex() << " and oracles merkleroot=" << merkleroot.GetHex() << std::endl);
// return(-1);
// }
// // check the burntxid is in the proof:
// if (std::find(txids.begin(), txids.end(), burnTx.GetHash()) == txids.end()) {
// LOGSTREAM("importcoin", CCLOG_INFO, stream << "CheckGATEWAYimport invalid proof for this burntxid=" << burnTx.GetHash().GetHex() << std::endl);
// return(-1);
// }
return(0);
}
int32_t CheckPUBKEYimport(TxProof proof,std::vector<uint8_t> rawproof,CTransaction burnTx,std::vector<CTxOut> payouts)
@@ -404,10 +647,20 @@ int32_t CheckPUBKEYimport(TxProof proof,std::vector<uint8_t> rawproof,CTransacti
return(0);
}
/*
* CC Eval method for import coin.
*
* This method should control every parameter of the ImportCoin transaction, since it has no signature
* to protect it from malleability.
##### 0xffffffff is a special CCid for single chain/dual daemon imports
*/
bool Eval::ImportCoin(const std::vector<uint8_t> params,const CTransaction &importTx,unsigned int nIn)
{
TxProof proof; CTransaction burnTx; std::vector<CTxOut> payouts; uint64_t txfee = 10000;
uint32_t targetCcid; std::string targetSymbol; uint256 payoutsHash; std::vector<uint8_t> rawproof;
TxProof proof; CTransaction burnTx; std::vector<CTxOut> payouts; uint64_t txfee = 10000; int32_t height,burnvout; std::vector<CPubKey> publishers;
uint32_t targetCcid; std::string targetSymbol,srcaddr,destaddr,receipt,rawburntx; uint256 payoutsHash,bindtxid; std::vector<uint8_t> rawproof;
std::vector<uint256> txids; CPubKey destpub;
if ( importTx.vout.size() < 2 )
return Invalid("too-few-vouts");
// params
@@ -458,7 +711,7 @@ bool Eval::ImportCoin(const std::vector<uint8_t> params,const CTransaction &impo
{
if ( ASSETCHAINS_CODAPORT == 0 )
return Invalid("CODA-import-without-port");
else if ( CheckCODAimport(proof,rawproof,burnTx,payouts) < 0 )
else if ( UnmarshalBurnTx(burnTx,srcaddr,receipt)==0 || CheckCODAimport(importTx,burnTx,payouts,srcaddr,receipt) < 0 )
return Invalid("CODA-import-failure");
}
else if ( targetSymbol == "PUBKEY" )
@@ -472,7 +725,7 @@ bool Eval::ImportCoin(const std::vector<uint8_t> params,const CTransaction &impo
{
if ( targetSymbol != ASSETCHAINS_SELFIMPORT )
return Invalid("invalid-gateway-import-coin");
else if ( CheckGATEWAYimport(proof,rawproof,burnTx,payouts) < 0 )
else if ( UnmarshalBurnTx(burnTx,bindtxid,publishers,txids,height,burnvout,rawburntx,destpub)==0 || CheckGATEWAYimport(importTx,burnTx,targetSymbol,rawproof,bindtxid,publishers,txids,height,burnvout,rawburntx,destpub) < 0 )
return Invalid("GATEWAY-import-failure");
}
}