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353 lines
17 KiB
353 lines
17 KiB
/******************************************************************************
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* Copyright © 2014-2016 The SuperNET Developers. *
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* *
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* See the AUTHORS, DEVELOPER-AGREEMENT and LICENSE files at *
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* the top-level directory of this distribution for the individual copyright *
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* holder information and the developer policies on copyright and licensing. *
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* *
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* Unless otherwise agreed in a custom licensing agreement, no part of the *
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* SuperNET software, including this file may be copied, modified, propagated *
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* or distributed except according to the terms contained in the LICENSE file *
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* *
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* Removal or modification of this copyright notice is prohibited. *
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* *
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******************************************************************************/
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// included from gecko.c
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uint32_t gecko_earliest_blocktime(int32_t estblocktime,uint32_t prevtimestamp)
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{
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if ( prevtimestamp == 0 )
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prevtimestamp = (uint32_t)time(NULL);
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return(prevtimestamp + ((estblocktime << 1) / 3));
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}
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int32_t gecko_blocknonce_verify(struct iguana_info *virt,uint8_t *serialized,int32_t datalen,uint32_t nBits,uint32_t timestamp,uint32_t prevtimestamp)
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{
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bits256 threshold,hash2;
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//printf("time.%u prev.%u\n",timestamp,prevtimestamp);
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if ( timestamp != 0 && prevtimestamp != 0 )
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{
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if ( prevtimestamp != 0 && timestamp < gecko_earliest_blocktime(virt->chain->estblocktime,prevtimestamp) )
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{
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printf("reject timestamp prev.%u %u earliest.%u\n",prevtimestamp,timestamp,gecko_earliest_blocktime(virt->chain->estblocktime,prevtimestamp));
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return(-1);
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}
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if ( timestamp > time(NULL) + GECKO_MAXFUTUREBLOCK )
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{
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printf("reject future timestamp.%u vs %u\n",timestamp,(uint32_t)time(NULL));
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return(-1);
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}
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}
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threshold = bits256_from_compact(nBits);
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hash2 = iguana_calcblockhash(virt->symbol,virt->chain->hashalgo,serialized,datalen);
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if ( bits256_cmp(threshold,hash2) > 0 )
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{
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printf("nonce worked crc.%x\n",calc_crc32(0,serialized,datalen));
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return(1);
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} else printf("nonce failed crc.%x\n",calc_crc32(0,serialized,datalen));
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return(-1);
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}
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uint32_t gecko_nBits(struct iguana_info *virt,uint32_t *prevtimestampp,struct iguana_block *block,int32_t n)
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{
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uint32_t nBits = GECKO_DEFAULTDIFF,starttime,endtime,est; struct iguana_block *prev=0; int32_t i,diff; bits256 targetval;
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*prevtimestampp = 0;
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if ( virt->chain->estblocktime == 0 )
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return(GECKO_EASIESTDIFF);
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for (i=0; i<n; i++)
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{
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if ( (prev= iguana_blockfind("geckotx",virt,block->RO.prev_block)) == 0 || prev->height == 0 )
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{
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i++;
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break;
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}
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if ( i == 0 )
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{
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*prevtimestampp = endtime = prev->RO.timestamp;
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nBits = prev->RO.bits;
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}
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starttime = prev->RO.timestamp;
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block = prev;
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}
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if ( starttime != 0 && endtime > starttime && i > 1 )
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{
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diff = (endtime - starttime);
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est = virt->chain->estblocktime * i;
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targetval = bits256_from_compact(nBits);
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if ( diff > est )
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{
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targetval = bits256_ave(targetval,bits256_ave(targetval,bits256_lshift(targetval)));
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}
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else if ( diff < est )
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{
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targetval = bits256_ave(targetval,bits256_ave(targetval,bits256_rshift(targetval)));
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}
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//printf("diff.%d est.%d nBits.%08x <- %08x\n",endtime - starttime,virt->chain->estblocktime * i,bits256_to_compact(targetval),nBits);
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nBits = bits256_to_compact(targetval);
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}
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if ( nBits > GECKO_EASIESTDIFF )
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{
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printf("nBits.%08x vs easiest %08x\n",nBits,GECKO_EASIESTDIFF);
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nBits = GECKO_EASIESTDIFF;
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}
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return(nBits);
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}
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int32_t gecko_delayedPoW(struct supernet_info *myinfo,struct iguana_info *btcd,int32_t isPoS,uint8_t *coinbase,bits256 *btcdhashp,uint32_t timestamp,int32_t height)
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{
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int32_t len = 0; //bits256 btchash;
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*btcdhashp = GENESIS_PUBKEY;
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len += iguana_rwnum(1,&coinbase[len],sizeof(height),(void *)&height);
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coinbase[len++] = 0;
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if ( (isPoS & 7) != 0 )
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{
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/* *btcdhashp = gecko_hashstampscalc(myinfo,btcd,&btchash,timestamp);
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if ( (isPoS & 2) != 0 && (bits256_cmp(*btcdhashp,GENESIS_PUBKEY) == 0 || bits256_nonz(*btcdhashp) == 0) )
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return(-1);
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if ( (isPoS & 4) != 0 && (bits256_cmp(btchash,GENESIS_PUBKEY) == 0 || bits256_nonz(btchash) == 0) )
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return(-1);
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//len += iguana_rwbignum(1,&coinbase[len],sizeof(*btcdhashp),btcdhashp->bytes);
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len += iguana_rwbignum(1,&coinbase[len],sizeof(btchash),btchash.bytes);*/
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}
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return(len);
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}
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int32_t iguana_coinbase(struct iguana_info *virt,uint8_t *serialized,uint32_t timestamp,bits256 prev_hash,uint8_t *coinbasescript,uint32_t coinbaselen,uint8_t *minerpayment,uint32_t minerpaymentlen,int64_t blockreward,bits256 *txidp)
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{
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int32_t len = 0,rwflag=1; uint32_t prev_vout,sequence,lock_time; char txidstr[65]; struct iguana_msgtx msg;
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memset(&msg,0,sizeof(msg));
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msg.tx_out = (blockreward > 0) ? 1 : 0;
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msg.tx_in = 1;
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sequence = prev_vout = -1;
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lock_time = 0;
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msg.version = virt->chain->normal_txversion;
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msg.timestamp = timestamp;
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len += iguana_rwnum(rwflag,&serialized[len],sizeof(msg.version),&msg.version);
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if ( virt->chain->isPoS != 0 )
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len += iguana_rwnum(rwflag,&serialized[len],sizeof(msg.timestamp),&msg.timestamp);
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{
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len += iguana_rwvarint32(rwflag,&serialized[len],&msg.tx_in);
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// tx_in times
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len += iguana_rwbignum(rwflag,&serialized[len],sizeof(prev_hash),prev_hash.bytes);
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len += iguana_rwnum(rwflag,&serialized[len],sizeof(prev_vout),&prev_vout);
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len += iguana_rwvarint32(rwflag,&serialized[len],&coinbaselen);
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len += iguana_rwmem(rwflag,&serialized[len],coinbaselen,coinbasescript);
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len += iguana_rwnum(rwflag,&serialized[len],sizeof(sequence),&sequence);
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}
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{
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len += iguana_rwvarint32(rwflag,&serialized[len],&msg.tx_out);
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// tx_out times
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if ( msg.tx_out > 0 )
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{
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len += iguana_rwnum(rwflag,&serialized[len],sizeof(blockreward),&blockreward);
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len += iguana_rwvarint32(rwflag,&serialized[len],&minerpaymentlen);
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len += iguana_rwmem(rwflag,&serialized[len],minerpaymentlen,minerpayment);
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}
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}
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len += iguana_rwnum(rwflag,&serialized[len],sizeof(lock_time),&lock_time);
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*txidp = bits256_doublesha256(txidstr,serialized,len);
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return(len);
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}
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char *gecko_coinbasestr(struct supernet_info *myinfo,struct iguana_info *virt,bits256 *txidp,uint32_t timestamp,uint8_t *minerpubkey,uint64_t blockreward,uint8_t *data,int32_t datalen,bits256 coinbasespend)
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{
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char *rawtx=0; uint8_t minerpayment[512],serialized[8192]; int32_t minerpaymentlen=0,len=0;
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if ( blockreward > 0 )
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minerpaymentlen = bitcoin_pubkeyspend(minerpayment,0,minerpubkey);
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len = iguana_coinbase(virt,serialized,timestamp,coinbasespend,data,datalen,minerpayment,minerpaymentlen,blockreward,txidp);
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if ( len > 0 )
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{
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rawtx = malloc(len*2 + 1);
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init_hexbytes_noT(rawtx,serialized,len);
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}
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return(rawtx);
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}
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char *gecko_blockconstruct(struct supernet_info *myinfo,struct iguana_info *virt,struct iguana_block *newblock,uint32_t *noncep,struct gecko_memtx **txptrs,int32_t txn_count,uint8_t *coinbase,int32_t coinbaselen,bits256 coinbasespend,double expiration,uint8_t *minerpubkey,int64_t blockreward)
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{
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struct iguana_info *btcd; uint8_t serialized[sizeof(*newblock)],space[16384]; int32_t i,n,len,totaltxlen=0; char *coinbasestr,str[65],str2[65],*blockstr=0; bits256 *txids=0,txspace[256],threshold; struct gecko_memtx *memtx;
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if ( (btcd= iguana_coinfind("BTCD")) == 0 )
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{
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printf("basilisk needs BTCD\n");
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return(0);
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}
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if ( txn_count+2 < sizeof(space)/sizeof(*space) )
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{
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txids = txspace;
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memset(txids,0,sizeof(*txids) * (txn_count+2));
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} else txids = calloc(txn_count+2,sizeof(*txids));
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if ( txn_count > 0 )
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{
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for (i=0; i<txn_count; i++)
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{
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if ( (memtx= txptrs[i]) != 0 )
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{
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totaltxlen += memtx->datalen;
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txids[i + 1] = memtx->txid;
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printf("memtxid.%s\n",bits256_str(str,memtx->txid));
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}
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}
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}
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if ( (coinbasestr= gecko_coinbasestr(myinfo,virt,&txids[0],newblock->RO.timestamp,minerpubkey,blockreward,coinbase,coinbaselen,coinbasespend)) != 0 )
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{
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newblock->RO.merkle_root = iguana_merkle(txids,txn_count + 1);
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newblock->RO.txn_count = (txn_count + 1);
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if ( txn_count > 0 )
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{
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printf("%s %s\n",bits256_str(str,txids[0]),bits256_str(str2,txids[1]));
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}
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threshold = bits256_from_compact(newblock->RO.bits);
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if ( (newblock->RO.nonce= *noncep) == 0 )
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{
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for (i=0; i<GECKO_MAXMINERITERS; i++)
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{
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newblock->RO.nonce = rand();
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n = iguana_serialize_block(virt->chain,&newblock->RO.hash2,serialized,newblock);
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//char str[65]; printf("nonce.%08x %s\n",newblock->RO.nonce,bits256_str(str,newblock->RO.hash2));
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if ( bits256_cmp(threshold,newblock->RO.hash2) > 0 )
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{
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//printf("FOUND NONCE\n");
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break;
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}
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if ( virt->blocks.hwmchain.RO.timestamp != 0 && (i & 0xff) == 0xff && OS_milliseconds() > expiration )
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{
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//printf("time limit exceeded %u\n",virt->blocks.hwmchain.RO.timestamp);
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free(coinbasestr);
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if ( txids != txspace )
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free(txids);
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return(0);
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}
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}
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}
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*noncep = newblock->RO.nonce;
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n = iguana_serialize_block(virt->chain,&newblock->RO.hash2,serialized,newblock);
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while ( 1 && time(NULL) <= newblock->RO.timestamp + GECKO_MAXFUTUREBLOCK )
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{
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//printf("wait for block to be close enough to now: lag %ld\n",time(NULL) - newblock->RO.timestamp);
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sleep(1);
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}
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//if ( gecko_blocknonce_verify(virt,serialized,n,newblock->RO.bits,newblock->RO.timestamp,virt->blocks.hwmchain.RO.timestamp) >= 0 )
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if ( bits256_cmp(threshold,newblock->RO.hash2) > 0 )
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{
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blockstr = calloc(1,strlen(coinbasestr) + (totaltxlen+n)*2 + 1);
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init_hexbytes_noT(blockstr,serialized,n);
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//printf("block.(%s) coinbase.(%s) lens.%ld\n",blockstr,coinbasestr,(strlen(blockstr)+strlen(coinbasestr))/2);
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strcat(blockstr,coinbasestr);
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len = (int32_t)strlen(blockstr);
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for (i=0; i<txn_count; i++)
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{
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if ( (memtx= txptrs[i]) != 0 )
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{
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init_hexbytes_noT(&blockstr[len],gecko_txdata(memtx),memtx->datalen);
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len += memtx->datalen << 1;
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}
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}
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} else printf("nonce failure\n");
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free(coinbasestr);
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}
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if ( txids != txspace )
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free(txids);
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return(blockstr);
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}
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char *gecko_createblock(struct supernet_info *myinfo,int32_t estblocktime,uint32_t prevtimestamp,struct iguana_info *btcd,int32_t isPoS,struct iguana_block *newblock,char *symbol,struct gecko_memtx **txptrs,int32_t txn_count,int32_t maxmillis,uint8_t *minerpubkey,int64_t blockreward)
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{
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bits256 btcdhash; uint8_t coinbase[512]; int32_t coinbaselen; uint32_t nonce; double expiration = OS_milliseconds() + maxmillis;
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//char str[65]; printf("create prev.(%s) %p\n",bits256_str(str,newblock->RO.prev_block),&newblock->RO.prev_block);
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if ( btcd != 0 )
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{
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newblock->RO.timestamp = gecko_earliest_blocktime(estblocktime,prevtimestamp);
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if ( (coinbaselen= gecko_delayedPoW(myinfo,btcd,isPoS,coinbase,&btcdhash,newblock->RO.timestamp,newblock->height)) < 0 )
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{
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printf("error generating coinbase for height.%d\n",newblock->height);
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return(0);
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}
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nonce = 0;
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return(gecko_blockconstruct(myinfo,btcd,newblock,&nonce,txptrs,txn_count,coinbase,coinbaselen,btcdhash,expiration,minerpubkey,blockreward));
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} else return(0);
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}
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cJSON *gecko_paymentsobj(struct supernet_info *myinfo,cJSON *txjson,cJSON *valsobj,int32_t reusedaddrs)
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{
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cJSON *item,*array; char *coinaddr; uint64_t satoshis; uint8_t addrtype,pubkey33[33],rmd160[20],outputscript[512]; int32_t i,n,scriptlen; uint32_t locktime,txversion; struct iguana_waddress *waddr; struct iguana_waccount *wacct;
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locktime = juint(valsobj,"locktime");
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if ( (txversion= juint(valsobj,"txversion")) == 0 )
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txversion = (locktime == 0) ? IGUANA_NORMAL_TXVERSION : IGUANA_LOCKTIME_TXVERSION;
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if ( txjson == 0 )
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txjson = bitcoin_txcreate(1,locktime,txversion);
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if ( (array= jarray(&n,valsobj,"payments")) != 0 && n > 0 )
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{
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for (i=0; i<n; i++)
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{
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item = jitem(array,i);
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if ( (coinaddr= jfieldname(item)) != 0 && (satoshis= j64bits(item,coinaddr)) > 0 )
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{
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printf("payment.%s <- %.8f\n",coinaddr,dstr(satoshis));
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bitcoin_addr2rmd160(&addrtype,rmd160,coinaddr);
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scriptlen = 0;
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if ( reusedaddrs == 0 )
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{
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if ( (waddr= iguana_waddresssearch(myinfo,&wacct,coinaddr)) != 0 )
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{
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if ( bitcoin_pubkeylen(waddr->pubkey) > 0 )
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scriptlen = bitcoin_pubkeyspend(outputscript,0,pubkey33);
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}
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}
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if ( scriptlen == 0 )
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scriptlen = bitcoin_standardspend(outputscript,0,rmd160);
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bitcoin_txoutput(txjson,outputscript,scriptlen,satoshis);
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}
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}
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}
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return(txjson);
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}
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void gecko_blocksubmit(struct supernet_info *myinfo,struct iguana_info *btcd,struct iguana_info *virt,char *blockstr,bits256 hash2)
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{
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uint8_t *data,space[16384],*allocptr=0; int32_t i,len,numranked=0; struct iguana_peers *peers; struct iguana_peer *addr;
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//printf("submit.(%s)\n",blockstr);
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if ( (peers= virt->peers) == 0 || (numranked= peers->numranked) == 0 )
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basilisk_blocksubmit(myinfo,btcd,virt,blockstr,hash2);
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else // physical node for geckochain
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{
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if ( (data= get_dataptr(sizeof(struct iguana_msghdr),&allocptr,&len,space,sizeof(space),blockstr)) != 0 )
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{
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for (i=0; i<numranked; i++)
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{
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if ( (addr= peers->ranked[i]) != 0 && addr->usock >= 0 && addr->supernet != 0 )
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iguana_queue_send(addr,0,data,"block",len);
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}
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}
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if ( allocptr != 0 )
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free(allocptr);
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}
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}
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void gecko_miner(struct supernet_info *myinfo,struct iguana_info *btcd,struct iguana_info *virt,int32_t maxmillis,uint8_t *minerpubkey33)
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{
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struct iguana_zblock newblock; uint32_t prevtimestamp,nBits; int64_t reward = 0; int32_t txn_count; char *blockstr,*space[256]; struct gecko_memtx **txptrs; void *ptr; //struct iguana_bundle *bp;
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if ( virt->virtualchain == 0 )
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return;
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memset(&newblock,0,sizeof(newblock));
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newblock.height = virt->blocks.hwmchain.height + 1;
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newblock.RO.prev_block = virt->blocks.hwmchain.RO.hash2;
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newblock.RO.version = GECKO_DEFAULTVERSION;
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newblock.RO.allocsize = iguana_ROallocsize(virt);
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if ( (nBits= gecko_nBits(virt,&prevtimestamp,(void *)&newblock,GECKO_DIFFITERS)) != 0 )
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{
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newblock.RO.bits = nBits;
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//printf("mine.%s nBits.%x ht.%d\n",virt->symbol,nBits,newblock.height);
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txptrs = gecko_mempool_txptrs(myinfo,virt,&reward,&txn_count,&ptr,space,(int32_t)(sizeof(space)/sizeof(*space)),newblock.height);
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//char str[65]; printf("HWM.%s %p\n",bits256_str(str,newblock.RO.prev_block),&newblock.RO.prev_block);
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if ( (blockstr= gecko_createblock(myinfo,virt->chain->estblocktime,prevtimestamp,btcd,virt->chain->isPoS,(void *)&newblock,virt->symbol,txptrs,txn_count,maxmillis,minerpubkey33,reward)) != 0 )
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{
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char str[65]; printf(">>>>>>>>>>>>>>>>> MINED %s.%x %s %u %d %.8f %d\n",virt->symbol,newblock.RO.bits,bits256_str(str,newblock.RO.hash2),newblock.RO.timestamp,newblock.height,dstr(reward),newblock.RO.txn_count);
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gecko_blocksubmit(myinfo,btcd,virt,blockstr,newblock.RO.hash2);
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free(blockstr);
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}
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if ( txptrs != (void *)space )
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free(txptrs);
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}
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}
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