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Oracles data and format check (#8)

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- Sanity check of oracle data

- Fix oracle format check
This commit is contained in:
Mihailo Milenkovic
2019-01-03 11:55:48 +01:00
committed by GitHub
parent b1dc77875a
commit 1db43ae672
2 changed files with 94 additions and 27 deletions
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101
src/cc/oracles.cpp
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@@ -416,6 +416,42 @@ int32_t oracle_format(uint256 *hashp,int64_t *valp,char *str,uint8_t fmt,uint8_t
return(offset);
}
int32_t oracle_parse_data_format(std::vector<uint8_t> data,std::string format)
{
int64_t offset=0,len=0; char fmt;
for (int i=0; i<format.size();i++)
{
fmt=format[i];
switch (fmt)
{
case 's': len = data[offset++]; break;
case 'S': len = data[offset++]; len |= ((int32_t)data[offset++] << 8); break;
case 'd': len = data[offset++]; break;
case 'D': len = data[offset++]; len |= ((int32_t)data[offset++] << 8); break;
case 'c': len = 1; break;
case 'C': len = 1; break;
case 't': len = 2; break;
case 'T': len = 2; break;
case 'i': len = 4; break;
case 'I': len = 4; break;
case 'l': len = 8; break;
case 'L': len = 8; break;
case 'h': len = 32; break;
default: return(0); break;
}
if (len>data.size()-offset) return (0);
if (fmt=='S' || fmt=='s')
{
for (int j=offset;j<offset+len;j++)
if (data[j]<32 || data[j]>127) return (0);
}
offset+=len;
}
if (offset!=data.size()) return (0);
else return (offset);
}
int64_t _correlate_price(int64_t *prices,int32_t n,int64_t price)
{
int32_t i,count = 0; int64_t diff,threshold = (price >> 8);
@@ -729,13 +765,29 @@ int64_t LifetimeOraclesFunds(struct CCcontract_info *cp,uint256 oracletxid,CPubK
std::string OracleCreate(int64_t txfee,std::string name,std::string description,std::string format)
{
CMutableTransaction mtx = CreateNewContextualCMutableTransaction(Params().GetConsensus(), komodo_nextheight());
CPubKey mypk,Oraclespk; struct CCcontract_info *cp,C;
CPubKey mypk,Oraclespk; struct CCcontract_info *cp,C; char fmt;
cp = CCinit(&C,EVAL_ORACLES);
if ( name.size() > 32 || description.size() > 4096 || format.size() > 4096 )
{
fprintf(stderr,"name.%d or description.%d is too big\n",(int32_t)name.size(),(int32_t)description.size());
CCerror = strprintf("name.%d or description.%d is too big",(int32_t)name.size(),(int32_t)description.size());
fprintf(stderr,"%s\n", CCerror.c_str() );
return("");
}
}
for(int i = 0; i < format.size(); i++)
{
fmt=format[i];
switch (fmt)
{
case 's': case 'S': case 'd': case 'D':
case 'c': case 'C': case 't': case 'T':
case 'i': case 'I': case 'l': case 'L':
case 'h': break;
default: CCerror = strprintf("invalid format type");
fprintf(stderr,"%s\n", CCerror.c_str() );
return("");
}
}
if ( txfee == 0 )
txfee = 10000;
mypk = pubkey2pk(Mypubkey());
@@ -745,6 +797,8 @@ std::string OracleCreate(int64_t txfee,std::string name,std::string description,
mtx.vout.push_back(CTxOut(txfee,CScript() << ParseHex(HexStr(Oraclespk)) << OP_CHECKSIG));
return(FinalizeCCTx(0,cp,mtx,mypk,txfee,EncodeOraclesCreateOpRet('C',name,description,format)));
}
CCerror = strprintf("error adding normal inputs");
fprintf(stderr,"%s\n", CCerror.c_str() );
return("");
}
@@ -757,7 +811,8 @@ std::string OracleRegister(int64_t txfee,uint256 oracletxid,int64_t datafee)
txfee = 10000;
if ( datafee < txfee )
{
fprintf(stderr,"datafee must be txfee or more\n");
CCerror = strprintf("datafee must be txfee or more");
fprintf(stderr,"%s\n", CCerror.c_str() );
return("");
}
mypk = pubkey2pk(Mypubkey());
@@ -769,6 +824,8 @@ std::string OracleRegister(int64_t txfee,uint256 oracletxid,int64_t datafee)
mtx.vout.push_back(MakeCC1vout(cp->evalcode,txfee,batonpk));
return(FinalizeCCTx(0,cp,mtx,mypk,txfee,EncodeOraclesOpRet('R',oracletxid,mypk,datafee)));
}
CCerror = strprintf("error adding normal inputs");
fprintf(stderr,"%s\n", CCerror.c_str() );
return("");
}
@@ -787,13 +844,17 @@ std::string OracleSubscribe(int64_t txfee,uint256 oracletxid,CPubKey publisher,i
mtx.vout.push_back(CTxOut(txfee,CScript() << ParseHex(HexStr(markerpubkey)) << OP_CHECKSIG));
return(FinalizeCCTx(0,cp,mtx,mypk,txfee,EncodeOraclesOpRet('S',oracletxid,mypk,amount)));
}
CCerror = strprintf("error adding normal inputs");
fprintf(stderr,"%s\n", CCerror.c_str() );
return("");
}
std::string OracleData(int64_t txfee,uint256 oracletxid,std::vector <uint8_t> data)
{
CMutableTransaction mtx = CreateNewContextualCMutableTransaction(Params().GetConsensus(), komodo_nextheight());
CScript pubKey; CPubKey mypk,batonpk; int64_t datafee,inputs,CCchange = 0; struct CCcontract_info *cp,C; uint256 batontxid; char coinaddr[64],batonaddr[64]; std::vector <uint8_t> prevdata;
CScript pubKey; CPubKey mypk,batonpk; int64_t offset,datafee,inputs,CCchange = 0; struct CCcontract_info *cp,C; uint256 batontxid,hashBlock;
char coinaddr[64],batonaddr[64]; std::vector <uint8_t> prevdata; CTransaction tx; std::string name,description,format; int32_t len,numvouts;
cp = CCinit(&C,EVAL_ORACLES);
mypk = pubkey2pk(Mypubkey());
if ( data.size() > 8192 )
@@ -808,6 +869,30 @@ std::string OracleData(int64_t txfee,uint256 oracletxid,std::vector <uint8_t> da
fprintf(stderr,"%s\n", CCerror.c_str() );
return("");
}
if ( GetTransaction(oracletxid,tx,hashBlock,false) != 0 && (numvouts=tx.vout.size()) > 0 )
{
if ( DecodeOraclesCreateOpRet(tx.vout[numvouts-1].scriptPubKey,name,description,format) == 'C' )
{
if (oracle_parse_data_format(data,format)==0)
{
CCerror = strprintf("data does not match length or content format specification");
fprintf(stderr,"%s\n", CCerror.c_str() );
return("");
}
}
else
{
CCerror = strprintf("invalid oracle txid opret data");
fprintf(stderr,"%s\n", CCerror.c_str() );
return("");
}
}
else
{
CCerror = strprintf("invalid oracle txid");
fprintf(stderr,"%s\n", CCerror.c_str() );
return("");
}
if ( txfee == 0 )
txfee = 10000;
GetCCaddress(cp,coinaddr,mypk);
@@ -831,7 +916,7 @@ std::string OracleData(int64_t txfee,uint256 oracletxid,std::vector <uint8_t> da
fprintf(stderr,"%s\n", CCerror.c_str() );
}
} else {
CCerror = strprintf("couldnt add normal inputs\n");
CCerror = strprintf("couldnt add normal inputs");
fprintf(stderr,"%s\n", CCerror.c_str() );
}
return("");
@@ -855,7 +940,9 @@ UniValue OracleFormat(uint8_t *data,int32_t datalen,char *format,int32_t formatl
UniValue OracleDataSamples(uint256 reforacletxid,uint256 batontxid,int32_t num)
{
UniValue result(UniValue::VOBJ),a(UniValue::VARR); CTransaction tx,oracletx; uint256 hashBlock,btxid,oracletxid; CPubKey pk; std::string name,description,format; int32_t numvouts,n=0; std::vector<uint8_t> data; char *formatstr = 0;
UniValue result(UniValue::VOBJ),a(UniValue::VARR); CTransaction tx,oracletx; uint256 hashBlock,btxid,oracletxid;
CPubKey pk; std::string name,description,format; int32_t numvouts,n=0; std::vector<uint8_t> data; char *formatstr = 0;
result.push_back(Pair("result","success"));
if ( GetTransaction(reforacletxid,oracletx,hashBlock,false) != 0 && (numvouts=oracletx.vout.size()) > 0 )
{