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SuperNET/iguana/iguana_notary.c

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/******************************************************************************
* Copyright © 2014-2016 The SuperNET Developers. *
* *
* See the AUTHORS, DEVELOPER-AGREEMENT and LICENSE files at *
* the top-level directory of this distribution for the individual copyright *
* holder information and the developer policies on copyright and licensing. *
* *
* Unless otherwise agreed in a custom licensing agreement, no part of the *
* SuperNET software, including this file may be copied, modified, propagated *
* or distributed except according to the terms contained in the LICENSE file *
* *
* Removal or modification of this copyright notice is prohibited. *
* *
******************************************************************************/
#include "iguana777.h"
#include "notaries.h"
struct dpow_entry
{
bits256 prev_hash;
uint64_t mask;
int32_t prev_vout,height;
uint8_t pubkey[33],k,siglen,sig[76];
};
bits256 dpow_getbestblockhash(struct supernet_info *myinfo,struct iguana_info *coin)
{
char *retstr; bits256 blockhash;
memset(blockhash.bytes,0,sizeof(blockhash));
if ( coin->FULLNODE < 0 )
{
if ( (retstr= bitcoind_passthru(coin->symbol,coin->chain->serverport,coin->chain->userpass,"getbestblockhash","")) != 0 )
{
printf("getbestblockhash.(%s)\n",retstr);
if ( is_hexstr(retstr,0) == sizeof(blockhash)*2 )
decode_hex(blockhash.bytes,sizeof(blockhash),retstr);
free(retstr);
}
}
else if ( coin->FULLNODE > 0 || coin->VALIDATENODE > 0 )
{
blockhash = coin->blocks.hwmchain.RO.hash2;
}
else
{
}
return(blockhash);
}
cJSON *dpow_getblock(struct supernet_info *myinfo,struct iguana_info *coin,bits256 blockhash)
{
char buf[128],str[65],*retstr=0; cJSON *json = 0;
if ( coin->FULLNODE < 0 )
{
sprintf(buf,"\"%s\"",bits256_str(str,blockhash));
retstr = bitcoind_passthru(coin->symbol,coin->chain->serverport,coin->chain->userpass,"getblock",buf);
printf("getblock.(%s)\n",retstr);
}
else if ( coin->FULLNODE > 0 || coin->VALIDATENODE > 0 )
{
retstr = bitcoinrpc_getblock(myinfo,coin,0,0,blockhash,1,0);
}
else
{
return(0);
}
if ( retstr != 0 )
{
json = cJSON_Parse(retstr);
free(retstr);
}
return(json);
}
cJSON *dpow_gettransaction(struct supernet_info *myinfo,struct iguana_info *coin,bits256 txid)
{
char buf[128],str[65],*retstr=0,*rawtx=0; cJSON *json = 0;
if ( coin->FULLNODE < 0 )
{
sprintf(buf,"[\"%s\", 1]",bits256_str(str,txid));
if ( (rawtx= bitcoind_passthru(coin->symbol,coin->chain->serverport,coin->chain->userpass,"getrawtransaction",buf)) != 0 )
{
retstr = bitcoind_passthru(coin->symbol,coin->chain->serverport,coin->chain->userpass,"decoderawtransaction",rawtx);
printf("decoderawtransaction.(%s)\n",retstr);
free(rawtx);
}
}
else if ( coin->FULLNODE > 0 || coin->VALIDATENODE > 0 )
{
retstr = bitcoinrpc_getrawtransaction(myinfo,coin,0,0,txid,1);
}
else
{
return(0);
}
if ( retstr != 0 )
{
json = cJSON_Parse(retstr);
free(retstr);
}
return(json);
}
cJSON *dpow_listunspent(struct supernet_info *myinfo,struct iguana_info *coin,char *coinaddr)
{
char buf[128],*retstr; cJSON *json = 0;
if ( coin->FULLNODE < 0 )
{
sprintf(buf,"1, %d, [\"%s\"]",coin->longestchain,coinaddr);
if ( (retstr= bitcoind_passthru(coin->symbol,coin->chain->serverport,coin->chain->userpass,"listunspent",buf)) != 0 )
{
json = cJSON_Parse(retstr);
printf("listunspent.(%s)\n",retstr);
free(retstr);
}
}
else if ( coin->FULLNODE > 0 || coin->VALIDATENODE > 0 )
{
json = iguana_listunspents(myinfo,coin,0,1,coin->longestchain,"");
}
else
{
return(0);
}
return(json);
}
char *dpow_signrawtransaction(struct supernet_info *myinfo,struct iguana_info *coin,char *rawtx,cJSON *vins)
{
cJSON *array,*privkeys,*item; char *wifstr,*str,*paramstr,*retstr; uint8_t script[256]; int32_t i,n,len,hashtype; struct vin_info V; struct iguana_waddress *waddr; struct iguana_waccount *wacct;
if ( coin->FULLNODE < 0 )
{
array = cJSON_CreateArray();
jaddistr(array,rawtx);
jaddi(array,vins);
paramstr = jprint(array,1);
retstr = bitcoind_passthru(coin->symbol,coin->chain->serverport,coin->chain->userpass,"signrawtransaction",paramstr);
printf("signrawtransaction.(%s) params.(%s)\n",retstr,paramstr);
free(paramstr);
return(retstr);
}
else if ( coin->FULLNODE > 0 || coin->VALIDATENODE > 0 )
{
privkeys = cJSON_CreateArray();
if ( (n= cJSON_GetArraySize(vins)) > 0 )
{
for (i=0; i<n; i++)
{
wifstr = "";
item = jitem(vins,i);
if ( (str= jstr(item,"scriptPubkey")) != 0 && is_hexstr(str,0) > 0 && strlen(str) < sizeof(script)*2 )
{
len = (int32_t)strlen(str) >> 1;
decode_hex(script,len,str);
V.spendlen = len;
memcpy(V.spendscript,script,len);
if ( (hashtype= _iguana_calcrmd160(coin,&V)) >= 0 && V.coinaddr[0] != 0 )
{
if ( (waddr= iguana_waddresssearch(myinfo,&wacct,V.coinaddr)) != 0 )
{
if ( bits256_nonz(waddr->privkey) != 0 )
{
if ( bitcoin_priv2wif(waddr->wifstr,waddr->privkey,coin->chain->wiftype) > 0 )
{
wifstr = waddr->wifstr;
}
}
}
}
}
jaddistr(privkeys,wifstr);
}
}
retstr = bitcoinrpc_signrawtransaction(myinfo,coin,0,0,rawtx,vins,privkeys,"ALL");
free_json(privkeys);
return(retstr);
}
else
{
return(0);
}
}
char *dpow_sendrawtransaction(struct supernet_info *myinfo,struct iguana_info *coin,char *signedtx)
{
bits256 txid; cJSON *json;
if ( coin->FULLNODE < 0 )
{
printf("sendrawtransaction.(%s)\n",signedtx);
return(bitcoind_passthru(coin->symbol,coin->chain->serverport,coin->chain->userpass,"sendrawtransaction",signedtx));
}
else if ( coin->FULLNODE > 0 || coin->VALIDATENODE > 0 )
{
txid = iguana_sendrawtransaction(myinfo,coin,signedtx);
json = cJSON_CreateObject();
jaddbits256(json,"result",txid);
return(jprint(json,1));
}
else
{
return(0);
}
}
int32_t dpow_haveutxo(struct supernet_info *myinfo,struct iguana_info *coin,bits256 *txidp,int32_t *voutp,char *coinaddr)
{
int32_t i,n,vout,haveutxo = 0; bits256 txid; cJSON *unspents,*item; uint64_t satoshis; char *str; uint8_t script[35];
memset(txidp,0,sizeof(*txidp));
*voutp = -1;
if ( (unspents= dpow_listunspent(myinfo,coin,coinaddr)) != 0 )
{
if ( (n= cJSON_GetArraySize(unspents)) > 0 )
{
/*{
"txid" : "34bc21b40d6baf38e2db5be5353dd0bcc9fe416485a2a68753541ed2f9c194b1",
"vout" : 0,
"address" : "RFBmvBaRybj9io1UpgWM4pzgufc3E4yza7",
"scriptPubKey" : "21039a3f7373ae91588b9edd76a9088b2871f62f3438d172b9f18e0581f64887404aac",
"amount" : 3.00000000,
"confirmations" : 4282,
"spendable" : true
},*/
for (i=0; i<n; i++)
{
item = jitem(unspents,i);
satoshis = SATOSHIDEN * jdouble(item,"amount");
if ( satoshis == DPOW_UTXOSIZE )
{
if ( (str= jstr(item,"scriptPubKey")) != 0 && is_hexstr(str,0) == sizeof(script)*2 )
{
decode_hex(script,sizeof(script),str);
if ( script[0] == 33 && script[34] == 0xac && memcmp(script+1,myinfo->DPOW.minerkey33,33) == 0 )
{
txid = jbits256(item,"txid");
vout = jint(item,"vout");
if ( bits256_nonz(txid) != 0 && vout >= 0 )
{
if ( *voutp < 0 )
{
*voutp = vout;
*txidp = txid;
}
haveutxo++;
}
}
}
}
}
}
free_json(unspents);
}
return(haveutxo);
}
int32_t dpow_message_utxo(bits256 *hashmsgp,bits256 *txidp,int32_t *voutp,cJSON *json)
{
cJSON *msgobj,*item; uint8_t key[BASILISK_KEYSIZE],data[sizeof(bits256)*2+1]; char *keystr,*hexstr; int32_t i,j,n,datalen,retval = -1;
*voutp = -1;
memset(txidp,0,sizeof(*txidp));
if ( (msgobj= jarray(&n,json,"messages")) != 0 )
{
for (i=0; i<n; i++)
{
item = jitem(msgobj,i);
if ( (keystr= jstr(item,"key")) != 0 && is_hexstr(keystr,0) == BASILISK_KEYSIZE*2 && (hexstr= jstr(item,"data")) != 0 && (datalen= is_hexstr(hexstr,0)) > 0 )
{
decode_hex(key,BASILISK_KEYSIZE,keystr);
datalen >>= 1;
if ( datalen < sizeof(data) )
{
decode_hex(data,datalen,hexstr);
if ( datalen == sizeof(data) )
{
for (j=0; j<sizeof(bits256); j++)
{
hashmsgp->bytes[j] = data[j];
txidp->bytes[j] = data[j + sizeof(bits256)];
}
*voutp = data[sizeof(bits256) * 2];
retval = datalen;
}
} else printf("datalen.%d >= maxlen.%d\n",datalen,(int32_t)sizeof(data));
}
}
}
return(retval);
}
int32_t dpow_message_most(uint8_t *k_masks,int32_t num,cJSON *json,int32_t lastflag)
{
cJSON *msgobj,*item; uint8_t key[BASILISK_KEYSIZE],data[128]; char *keystr,*hexstr; int32_t duplicate,i,j,n,datalen,most = 0;
if ( (msgobj= jarray(&n,json,"messages")) != 0 )
{
for (i=0; i<n; i++)
{
item = jitem(msgobj,i);
if ( (keystr= jstr(item,"key")) != 0 && is_hexstr(keystr,0) == BASILISK_KEYSIZE*2 && (hexstr= jstr(item,"data")) != 0 && (datalen= is_hexstr(hexstr,0)) > 0 )
{
decode_hex(key,BASILISK_KEYSIZE,keystr);
datalen >>= 1;
if ( datalen < sizeof(data) )
{
decode_hex(data,datalen,hexstr);
for (j=duplicate=0; j<num; j++)
{
if ( memcmp(data+1,&k_masks[(j << 7) + 1],9) == 0 )
{
if ( data[0] == k_masks[j << 7] )
duplicate++;
else
{
if ( ++k_masks[(j << 7) + 127] == 0 )
k_masks[(j << 7) + 126]++;
}
}
}
if ( duplicate == 0 && num < 4096 )
{
uint8_t *sig; int32_t senderind,lastk,siglen; uint64_t mask;
senderind = data[0];
lastk = data[1];
iguana_rwnum(0,&data[2],sizeof(mask),(uint8_t *)&mask);
siglen = data[10];
sig = data+11;
memcpy(&k_masks[num << 7],data,datalen);
printf("num.%d sender.%d lastk.%d %llx\n",num,senderind,lastk,(long long)mask);
num++;
}
} else printf("datalen.%d >= maxlen.%d\n",datalen,(int32_t)sizeof(data));
}
}
}
if ( lastflag != 0 && num > 0 )
{
for (j=0; j<num; j++)
{
n = k_masks[(j << 7) + 127] + ((int32_t)k_masks[(j << 7) + 126] << 8);
if ( n > most )
{
most = n;
memcpy(&k_masks[num << 7],&k_masks[i << 7],1 << 7);
}
}
}
return(num);
}
cJSON *dpow_createtx(struct iguana_info *coin,cJSON **vinsp,struct dpow_entry notaries[DPOW_MAXRELAYS],int32_t numnotaries,int32_t height,int32_t lastk,uint64_t mask,int32_t usesigs)
{
int32_t i,j,m=0; char scriptstr[256]; cJSON *txobj=0,*vins=0,*item; uint64_t satoshis; uint8_t script[35];
if ( (txobj= bitcoin_txcreate(coin->chain->isPoS,0,1,0)) != 0 )
{
vins = cJSON_CreateArray();
for (j=0; j<numnotaries; j++)
{
i = ((height % numnotaries) + j) % numnotaries;
if ( ((1LL << i) & mask) != 0 )
{
item = cJSON_CreateObject();
jaddbits256(item,"txid",notaries[i].prev_hash);
jaddnum(item,"vout",notaries[i].prev_vout);
script[0] = 33;
memcpy(script+1,notaries[i].pubkey,33);
script[34] = 0xac;
init_hexbytes_noT(scriptstr,script,35);
jaddstr(item,"scriptPubKey",scriptstr);
if ( usesigs != 0 && notaries[i].siglen > 0 )
{
init_hexbytes_noT(scriptstr,notaries[i].sig,notaries[i].siglen);
jaddstr(item,"scriptSig",scriptstr);
}
jaddi(vins,item);
bitcoin_txinput(coin,txobj,notaries[i].prev_hash,notaries[i].prev_vout,0xffffffff,script,sizeof(script),0,0,0,0);
m++;
if ( m == numnotaries/2+1 && i == lastk )
break;
}
}
satoshis = DPOW_UTXOSIZE * m * .76;
script[0] = 33;
decode_hex(script+1,33,CRYPTO777_PUBSECPSTR);
script[34] = 0xac;
txobj = bitcoin_txoutput(txobj,script,sizeof(script),satoshis);
}
*vinsp = vins;
return(txobj);
}
int32_t dpow_signedtxgen(struct supernet_info *myinfo,struct dpow_info *dp,struct iguana_info *coin,bits256 *signedtxidp,char *signedtx,uint64_t mask,int32_t lastk,struct dpow_entry notaries[DPOW_MAXRELAYS],int32_t numnotaries,int32_t height,int32_t myind)
{
int32_t i,j,siglen,m=0; char *rawtx,*sigstr; cJSON *txobj,*sigobj,*txobj2,*vins,*item,*vin; uint8_t data[128],extraspace[8192],serialized[16384]; bits256 txid,srchash,desthash; struct iguana_msgtx msgtx; uint32_t channel;
channel = 's' | ('i' << 8) | ('g' << 16) | ('s' << 24);
for (j=0; j<sizeof(srchash); j++)
srchash.bytes[j] = myinfo->DPOW.minerkey33[j];
if ( (txobj= dpow_createtx(coin,&vins,notaries,numnotaries,height,lastk,mask,0)) != 0 )
{
if ( (rawtx= bitcoin_json2hex(myinfo,coin,&txid,txobj,0)) != 0 )
{
if ( (signedtx= dpow_signrawtransaction(myinfo,coin,rawtx,vins)) != 0 )
{
memset(&msgtx,0,sizeof(msgtx));
if ( (txobj2= bitcoin_hex2json(coin,height,&txid,&msgtx,rawtx,extraspace,sizeof(extraspace),serialized,vins,1)) != 0 )
{
if ( (vin= jarray(&m,txobj2,"vin")) != 0 && myind < m )
{
item = jitem(vin,myind);
if ( (sigobj= jobj(item,"scriptSig")) != 0 && (sigstr= jstr(sigobj,"hex")) != 0 )
{
siglen = (int32_t)strlen(sigstr) >> 1;
data[0] = myind;
data[1] = lastk;
iguana_rwnum(1,&data[2],sizeof(mask),(uint8_t *)&mask);
data[10] = siglen;
decode_hex(data+11,siglen,sigstr);
for (i=0; i<numnotaries; i++)
{
for (j=0; j<sizeof(desthash); j++)
desthash.bytes[j] = notaries[i].pubkey[j+1];
basilisk_channelsend(myinfo,srchash,desthash,channel,height,data,siglen+11,600);
}
}
}
free_json(txobj2);
}
free(signedtx);
}
free(rawtx);
}
free_json(txobj);
free_json(vins);
}
return(-1);
}
int32_t dpow_k_masks_match(struct dpow_entry notaries[DPOW_MAXRELAYS],int32_t numnotaries,uint8_t *k_masks,int32_t num,int32_t refk,uint64_t refmask,int32_t refheight)
{
int32_t i,senderind,lastk,matches = 0; uint8_t data[128]; uint64_t mask;
for (i=0; i<num; i++)
{
memcpy(data,&k_masks[i << 7],sizeof(data));
senderind = data[0];
lastk = data[1];
iguana_rwnum(0,&data[2],sizeof(mask),(uint8_t *)&mask);
if ( senderind < numnotaries && lastk == refk && mask == refmask && notaries[senderind].height == refheight )
{
if ( (notaries[senderind].siglen= data[10]) < sizeof(notaries[senderind].sig) )
{
notaries[senderind].k = refk;
notaries[senderind].mask = refmask;
memcpy(notaries[senderind].sig,data+11,data[10]);
matches++;
}
}
}
return(matches);
}
int32_t dpow_mostsignedtx(struct supernet_info *myinfo,struct dpow_info *dp,struct iguana_info *coin,bits256 *signedtxidp,char *signedtx,uint64_t *maskp,int32_t *lastkp,struct dpow_entry notaries[DPOW_MAXRELAYS],int32_t numnotaries,int32_t height,int32_t myind)
{
uint32_t channel; uint8_t *k_masks; bits256 srchash,desthash; cJSON *retarray,*item,*txobj,*vins; int32_t i,num,j,k,m,most = 0; uint64_t mask; char *rawtx;
*lastkp = -1;
*maskp = 0;
channel = 's' | ('i' << 8) | ('g' << 16) | ('s' << 24);
for (j=0; j<sizeof(desthash); j++)
desthash.bytes[j] = myinfo->DPOW.minerkey33[j];
num = 0;
k_masks = calloc(4096,128);
for (i=0; i<numnotaries; i++)
{
for (j=0; j<sizeof(srchash); j++)
srchash.bytes[j] = notaries[i].pubkey[j+1];
if ( (retarray= basilisk_channelget(myinfo,srchash,desthash,channel,height,0)) != 0 )
{
if ( (m= cJSON_GetArraySize(retarray)) != 0 )
{
for (k=0; k<m; k++)
{
item = jitem(retarray,k);
if ( (num= dpow_message_most(k_masks,num,item,k==m-1)) < 0 )
break;
}
}
free_json(retarray);
}
}
if ( num > 0 )
{
k = k_masks[(num << 7) + 1];
iguana_rwnum(0,&k_masks[(num << 7) + 2],sizeof(mask),(uint8_t *)&mask);
*lastkp = k;
*maskp = mask;
if ( (most= dpow_k_masks_match(notaries,numnotaries,k_masks,num,k,mask,height)) >= numnotaries/2+1 )
{
if ( (txobj= dpow_createtx(coin,&vins,notaries,numnotaries,height,k,mask,1)) != 0 )
{
if ( (rawtx= bitcoin_json2hex(myinfo,coin,signedtxidp,txobj,0)) != 0 )
{
strcpy(signedtx,rawtx);
free(rawtx);
}
free_json(txobj);
free_json(vins);
}
}
}
free(k_masks);
return(most);
}
void dpow_txidupdate(struct supernet_info *myinfo,struct dpow_info *dp,struct iguana_info *coin,uint64_t *recvmaskp,uint32_t channel,int32_t height,struct dpow_entry notaries[DPOW_MAXRELAYS],int32_t numnotaries,int32_t myind,bits256 hashmsg)
{
int32_t i,j,k,m; cJSON *item,*retarray; bits256 desthash,srchash,checkmsg;
for (i=0; i<numnotaries; i++)
{
if ( (*recvmaskp & (1LL << i)) != 0 )
continue;
for (j=0; j<sizeof(srchash); j++)
desthash.bytes[j] = notaries[i].pubkey[j+1];
if ( (retarray= basilisk_channelget(myinfo,desthash,srchash,channel,height,0)) != 0 )
{
if ( (m= cJSON_GetArraySize(retarray)) != 0 )
{
for (k=0; k<m; k++)
{
item = jitem(retarray,k);
if ( dpow_message_utxo(&checkmsg,&notaries[i].prev_hash,&notaries[i].prev_vout,item) == sizeof(bits256)*2+1 )
{
if ( bits256_cmp(checkmsg,hashmsg) == 0 )
{
notaries[i].height = height;
*recvmaskp |= (1LL << i);
break;
}
}
}
}
free_json(retarray);
}
}
}
uint32_t dpow_statemachineiterate(struct supernet_info *myinfo,struct dpow_info *dp,struct iguana_info *coin,uint32_t state,bits256 hashmsg,int32_t heightmsg,struct dpow_entry notaries[DPOW_MAXRELAYS],int32_t numnotaries,int32_t myind,uint64_t *recvmaskp,bits256 *signedtxidp,char *signedtx)
{
// todo: add RBF support
bits256 txid,signedtxid; int32_t vout,completed,i,j,k,m,incr,haveutxo = 0; cJSON *addresses; char *sendtx,*rawtx,*retstr,coinaddr[64]; uint8_t data[sizeof(bits256)*2+1]; uint32_t channel; bits256 srchash,desthash; uint64_t mask;
incr = sqrt(numnotaries) + 1;
channel = 'd' | ('P' << 8) | ('o' << 16) | ('W' << 24);
bitcoin_address(coinaddr,coin->chain->pubtype,myinfo->DPOW.minerkey33,33);
if ( bits256_nonz(hashmsg) == 0 )
return(0xffffffff);
for (j=0; j<sizeof(srchash); j++)
srchash.bytes[j] = myinfo->DPOW.minerkey33[j];
switch ( state )
{
case 0:
if ( (haveutxo= dpow_haveutxo(myinfo,coin,&txid,&vout,coinaddr)) != 0 )
state = 1;
if ( haveutxo < 10 )
{
addresses = cJSON_CreateArray();
jaddistr(addresses,coinaddr);
if ( (rawtx= iguana_utxoduplicates(myinfo,coin,myinfo->DPOW.minerkey33,DPOW_UTXOSIZE,10,&completed,&signedtxid,0,addresses)) != 0 )
{
if ( (sendtx= dpow_sendrawtransaction(myinfo,coin,rawtx)) != 0 )
{
printf("sendrawtransaction.(%s)\n",sendtx);
free(sendtx);
}
free(rawtx);
}
free_json(addresses);
}
break;
case 1: // wait for utxo, send utxo to all other nodes
if ( (haveutxo= dpow_haveutxo(myinfo,coin,&txid,&vout,coinaddr)) != 0 && vout >= 0 && vout < 0x100 )
{
for (i=(myind % incr); i<numnotaries; i+=incr)
{
for (j=0; j<sizeof(srchash); j++)
{
desthash.bytes[j] = notaries[i].pubkey[j+1];
data[j] = hashmsg.bytes[j];
data[j+sizeof(bits256)] = txid.bytes[j];
}
data[sizeof(bits256)*2] = vout;
basilisk_channelsend(myinfo,srchash,desthash,channel,heightmsg,data,sizeof(data),600);
}
state = 2;
}
break;
case 2:
dpow_txidupdate(myinfo,dp,coin,recvmaskp,channel,heightmsg,notaries,numnotaries,myind,hashmsg);
if ( bitweight(*recvmaskp) > numnotaries/2 )
state = 3;
break;
case 3: // create rawtx, sign, send rawtx + sig to all other nodes
dpow_txidupdate(myinfo,dp,coin,recvmaskp,channel,heightmsg,notaries,numnotaries,myind,hashmsg);
k = 0;
if ( bitweight(*recvmaskp) > numnotaries/2+1 )
{
mask = 0;
for (j=m=0; j<numnotaries; j++)
{
k = ((heightmsg % numnotaries) + j) % numnotaries;
if ( ((1LL << k) & *recvmaskp) != 0 )
{
mask |= (1LL << k);
if ( ++m >= numnotaries/2+1 )
break;
}
}
} else mask = *recvmaskp;
if ( bitweight(mask) == numnotaries/2+1 )
{
if ( dpow_signedtxgen(myinfo,dp,coin,signedtxidp,signedtx,mask,k,notaries,numnotaries,heightmsg,myind) == 0 )
state = 4;
} else printf("mask.%llx wt.%d\n",(long long)mask,bitweight(mask));
break;
case 4: // wait for N/2+1 signed tx and broadcast
dpow_txidupdate(myinfo,dp,coin,recvmaskp,channel,heightmsg,notaries,numnotaries,myind,hashmsg);
if ( (m= dpow_mostsignedtx(myinfo,dp,coin,signedtxidp,signedtx,&mask,&k,notaries,numnotaries,heightmsg,myind)) > 0 )
{
if ( m >= numnotaries/2+1 )
{
if ( (retstr= dpow_sendrawtransaction(myinfo,coin,signedtx)) != 0 )
{
printf("sendrawtransaction.(%s)\n",retstr);
free(retstr);
}
state = 0xffffffff;
}
else
{
dpow_signedtxgen(myinfo,dp,coin,signedtxidp,signedtx,mask,k,notaries,numnotaries,heightmsg,myind);
}
}
break;
}
return(state);
}
void dpow_statemachinestart(void *ptr)
{
struct supernet_info *myinfo; struct dpow_info *dp; struct dpow_checkpoint checkpoint; void **ptrs = ptr;
int32_t i,n,myind = -1; uint64_t recvmask = 0; uint32_t srcstate=0,deststate=0; struct iguana_info *src,*dest; struct dpow_hashheight srchash,desthash; char signedtx[16384],str[65],coinaddr[64]; bits256 signedtxid; struct dpow_entry notaries[DPOW_MAXRELAYS];
memset(notaries,0,sizeof(notaries));
myinfo = ptrs[0];
dp = ptrs[1];
memcpy(&checkpoint,&ptrs[2],sizeof(checkpoint));
printf("statemachinestart %s->%s %s ht.%d\n",dp->symbol,dp->dest,bits256_str(str,checkpoint.blockhash.hash),checkpoint.blockhash.height);
src = iguana_coinfind(dp->symbol);
dest = iguana_coinfind(dp->dest);
n = (int32_t)(sizeof(Notaries)/sizeof(*Notaries));
for (i=0; i<n; i++)
{
decode_hex(notaries[i].pubkey,33,Notaries[i][1]);
bitcoin_address(coinaddr,src->chain->pubtype,notaries[i].pubkey,33);
printf("%s.%d ",coinaddr,i);
if ( memcmp(notaries[i].pubkey,myinfo->DPOW.minerkey33,33) == 0 )
myind = i;
}
bitcoin_address(coinaddr,src->chain->pubtype,myinfo->DPOW.minerkey33,33);
if ( myind < 0 )
{
printf("statemachinestart this node %s is not official notary\n",coinaddr);
free(ptr);
return;
}
dp->checkpoint = checkpoint;
srchash = checkpoint.blockhash;
desthash = dp->notarized[0];
printf("DPOW statemachine checkpoint.%d src.%p dest.%p\n",checkpoint.blockhash.height,src,dest);
while ( src != 0 && dest != 0 && (srcstate != 0xffffffff || deststate != 0xffffffff) )
{
sleep(10);
if ( dp->checkpoint.blockhash.height > checkpoint.blockhash.height )
{
printf("abort ht.%d due to new checkpoint.%d\n",checkpoint.blockhash.height,dp->checkpoint.blockhash.height);
break;
}
if ( srcstate == 0 )
srcstate = dpow_statemachineiterate(myinfo,dp,src,srcstate,srchash.hash,srchash.height,notaries,n,myind,&recvmask,&signedtxid,signedtx);
if ( deststate == 0 )
deststate = dpow_statemachineiterate(myinfo,dp,dest,deststate,desthash.hash,desthash.height,notaries,n,myind,&recvmask,&signedtxid,signedtx);
}
free(ptr);
}
int32_t dpow_getchaintip(struct supernet_info *myinfo,bits256 *blockhashp,uint32_t *blocktimep,bits256 *txs,uint32_t *numtxp,struct iguana_info *coin)
{
int32_t n,i,height = -1,maxtx = *numtxp; bits256 besthash; cJSON *array,*json;
*numtxp = *blocktimep = 0;
besthash = dpow_getbestblockhash(myinfo,coin);
if ( bits256_nonz(besthash) != 0 )
{
if ( (json= dpow_getblock(myinfo,coin,besthash)) != 0 )
{
if ( (height= juint(json,"height")) != 0 && (*blocktimep= juint(json,"time")) != 0 )
{
if ( (array= jarray(&n,json,"tx")) != 0 )
{
for (i=0; i<n&&i<maxtx; i++)
txs[i] = jbits256i(array,i);
*numtxp = n;
}
} else height = -1;
free_json(json);
}
}
return(height);
}
void dpow_fifoupdate(struct supernet_info *myinfo,struct dpow_checkpoint *fifo,struct dpow_checkpoint tip)
{
int32_t i,offset; struct dpow_checkpoint newfifo[DPOW_FIFOSIZE];
memset(newfifo,0,sizeof(newfifo));
for (i=DPOW_FIFOSIZE-1; i>0; i--)
{
if ( (offset= (tip.blockhash.height - fifo[i].blockhash.height)) >= 0 && offset < DPOW_FIFOSIZE )
newfifo[offset] = fifo[i];
}
newfifo[0] = tip;
memcpy(fifo,newfifo,sizeof(newfifo));
}
void dpow_checkpointset(struct supernet_info *myinfo,struct dpow_checkpoint *checkpoint,int32_t height,bits256 hash,uint32_t timestamp,uint32_t blocktime)
{
checkpoint->timestamp = timestamp;
checkpoint->blocktime = blocktime;
checkpoint->blockhash.hash = hash;
checkpoint->blockhash.height = height;
}
void dpow_srcupdate(struct supernet_info *myinfo,struct dpow_info *dp,int32_t height,bits256 hash,uint32_t timestamp,uint32_t blocktime)
{
void **ptrs;
dpow_checkpointset(myinfo,&dp->last,height,hash,timestamp,blocktime);
dpow_fifoupdate(myinfo,dp->srcfifo,dp->last);
if ( dp->destupdated != 0 && bits256_nonz(dp->srcfifo[dp->srcconfirms].blockhash.hash) != 0 )
{
ptrs = calloc(1,sizeof(void *)*2 + sizeof(struct dpow_checkpoint));
ptrs[0] = (void *)myinfo;
ptrs[1] = (void *)dp;
memcpy(&ptrs[2],&dp->srcfifo[dp->srcconfirms],sizeof(dp->srcfifo[dp->srcconfirms]));
if ( OS_thread_create(malloc(sizeof(pthread_t)),NULL,(void *)dpow_statemachinestart,(void *)ptrs) != 0 )
{
}
dp->destupdated = 0;
}
}
void dpow_approvedset(struct supernet_info *myinfo,struct dpow_info *dp,struct dpow_checkpoint *checkpoint,bits256 *txs,int32_t numtx)
{
int32_t i,j; bits256 txid;
if ( txs != 0 )
{
for (i=0; i<numtx; i++)
{
txid = txs[i];
if ( bits256_nonz(txid) != 0 )
{
for (j=0; j<DPOW_FIFOSIZE; j++)
{
if ( bits256_cmp(txid,dp->approved[j].hash) == 0 )
{
if ( bits256_nonz(checkpoint->approved.hash) == 0 || dp->approved[j].height >= checkpoint->approved.height )
checkpoint->approved = dp->approved[j];
}
}
}
}
}
}
void dpow_destconfirm(struct supernet_info *myinfo,struct dpow_info *dp,struct dpow_checkpoint *checkpoint)
{
int32_t i;
if ( bits256_nonz(checkpoint->approved.hash) != 0 )
{
for (i=DPOW_FIFOSIZE-1; i>0; i--)
dp->notarized[i] = dp->notarized[i-1];
dp->notarized[0] = checkpoint->approved;
}
}
void dpow_destupdate(struct supernet_info *myinfo,struct dpow_info *dp,int32_t height,bits256 hash,uint32_t timestamp,uint32_t blocktime)
{
dp->destupdated = timestamp;
dpow_checkpointset(myinfo,&dp->destchaintip,height,hash,timestamp,blocktime);
dpow_approvedset(myinfo,dp,&dp->destchaintip,dp->desttx,dp->numdesttx);
dpow_fifoupdate(myinfo,dp->destfifo,dp->destchaintip);
if ( strcmp(dp->dest,DPOW_BTCSTR) == 0 )
dpow_destconfirm(myinfo,dp,&dp->destfifo[DPOW_BTCCONFIRMS]);
else
{
dpow_destconfirm(myinfo,dp,&dp->destfifo[DPOW_KOMODOCONFIRMS * 2]); // todo: change to notarized KMD depth
}
}
void iguana_dPoWupdate(struct supernet_info *myinfo)
{
int32_t height; uint32_t blocktime; bits256 blockhash; struct iguana_info *src,*dest; struct dpow_info *dp = &myinfo->DPOW;
if ( strcmp(dp->symbol,"KMD") == 0 )
{
strcpy(dp->dest,DPOW_BTCSTR);
dp->srcconfirms = DPOW_KOMODOCONFIRMS;
}
else
{
strcpy(dp->dest,"KMD");
dp->srcconfirms = DPOW_THIRDPARTY_CONFIRMS;
}
if ( dp->srcconfirms > DPOW_FIFOSIZE )
dp->srcconfirms = DPOW_FIFOSIZE;
src = iguana_coinfind(dp->symbol);
dest = iguana_coinfind(dp->dest);
if ( src != 0 && dest != 0 )
{
dp->numdesttx = sizeof(dp->desttx)/sizeof(*dp->desttx);
if ( (height= dpow_getchaintip(myinfo,&blockhash,&blocktime,dp->desttx,&dp->numdesttx,dest)) != dp->destchaintip.blockhash.height && height >= 0 )
{
printf("%s got height.%d vs last.%d\n",dp->dest,height,dp->destchaintip.blockhash.height);
if ( height <= dp->destchaintip.blockhash.height )
{
printf("iguana_dPoWupdate dest.%s reorg detected %d vs %d\n",dp->dest,height,dp->destchaintip.blockhash.height);
if ( height == dp->destchaintip.blockhash.height && bits256_cmp(blockhash,dp->destchaintip.blockhash.hash) != 0 )
printf("UNEXPECTED ILLEGAL BLOCK in dest chaintip\n");
} else dpow_destupdate(myinfo,dp,height,blockhash,(uint32_t)time(NULL),blocktime);
}
dp->numsrctx = sizeof(dp->srctx)/sizeof(*dp->srctx);
if ( (height= dpow_getchaintip(myinfo,&blockhash,&blocktime,dp->srctx,&dp->numsrctx,src)) != dp->last.blockhash.height && height >= 0 )
{
printf("%s got height.%d vs last.%d\n",dp->symbol,height,dp->last.blockhash.height);
if ( height < dp->last.blockhash.height )
{
printf("iguana_dPoWupdate src.%s reorg detected %d vs %d approved.%d notarized.%d\n",dp->symbol,height,dp->last.blockhash.height,dp->approved[0].height,dp->notarized[0].height);
if ( height <= dp->approved[0].height )
{
if ( bits256_cmp(blockhash,dp->last.blockhash.hash) != 0 )
printf("UNEXPECTED ILLEGAL BLOCK in src chaintip\n");
} else dpow_srcupdate(myinfo,dp,height,blockhash,(uint32_t)time(NULL),blocktime);
} else dpow_srcupdate(myinfo,dp,height,blockhash,(uint32_t)time(NULL),blocktime);
}
} else printf("iguana_dPoWupdate missing src.(%s) %p or dest.(%s) %p\n",dp->symbol,src,dp->dest,dest);
}
#include "../includes/iguana_apidefs.h"
TWO_STRINGS(iguana,dpow,symbol,pubkey)
{
if ( myinfo->NOTARY.RELAYID < 0 )
return(clonestr("{\"error\":\"must be running as notary node\"}"));
if ( myinfo->DPOW.symbol[0] != 0 )
return(clonestr("{\"error\":\"cant dPoW more than one coin at a time\"}"));
if ( pubkey == 0 || pubkey[0] == 0 || is_hexstr(pubkey,0) != 66 )
return(clonestr("{\"error\":\"need 33 byte pubkey\"}"));
if ( symbol == 0 || symbol[0] == 0 )
symbol = "KMD";
if ( iguana_coinfind(symbol) == 0 )
return(clonestr("{\"error\":\"cant dPoW an inactive coin\"}"));
if ( strcmp(symbol,"KMD") == 0 && iguana_coinfind(DPOW_BTCSTR) == 0 )
return(clonestr("{\"error\":\"cant dPoW KMD without BTC\"}"));
else if ( strcmp(symbol,"KMD") != 0 && iguana_coinfind("KMD") == 0 )
return(clonestr("{\"error\":\"cant dPoW without KMD\"}"));
decode_hex(myinfo->DPOW.minerkey33,33,pubkey);
if ( bitcoin_pubkeylen(myinfo->DPOW.minerkey33) <= 0 )
return(clonestr("{\"error\":\"illegal pubkey\"}"));
strcpy(myinfo->DPOW.symbol,symbol);
return(clonestr("{\"result\":\"success\"}"));
}
#include "../includes/iguana_apiundefs.h"