Hush Full Node software. We were censored from Github, this is where all development happens now.
https://hush.is
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254 lines
8.3 KiB
254 lines
8.3 KiB
// Copyright (c) 2016-2022 The Hush developers
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// Distributed under the GPLv3 software license, see the accompanying
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// file COPYING or https://www.gnu.org/licenses/gpl-3.0.en.html
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/******************************************************************************
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* Copyright © 2014-2019 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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#include <assert.h>
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#include <cryptoconditions.h>
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#include "primitives/block.h"
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#include "primitives/transaction.h"
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#include "script/cc.h"
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#include "cc/eval.h"
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#include "cc/utils.h"
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#include "cc/CCinclude.h"
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#include "main.h"
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#include "chain.h"
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#include "core_io.h"
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#include "crosschain.h"
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bool CClib_Dispatch(const CC *cond,Eval *eval,std::vector<uint8_t> paramsNull,const CTransaction &txTo,unsigned int nIn);
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char *CClib_name();
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Eval* EVAL_TEST = 0;
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struct CCcontract_info CCinfos[0x100];
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extern pthread_mutex_t HUSH_CC_mutex;
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bool RunCCEval(const CC *cond, const CTransaction &tx, unsigned int nIn)
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{
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EvalRef eval;
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pthread_mutex_lock(&HUSH_CC_mutex);
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bool out = eval->Dispatch(cond, tx, nIn);
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pthread_mutex_unlock(&HUSH_CC_mutex);
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if ( eval->state.IsValid() != out)
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fprintf(stderr,"out %d vs %d isValid\n",(int32_t)out,(int32_t)eval->state.IsValid());
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//assert(eval->state.IsValid() == out);
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if (eval->state.IsValid()) return true;
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std::string lvl = eval->state.IsInvalid() ? "Invalid" : "Error!";
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fprintf(stderr, "CC Eval %s %s: %s spending tx %s\n",
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EvalToStr(cond->code[0]).data(),
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lvl.data(),
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eval->state.GetRejectReason().data(),
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tx.vin[nIn].prevout.hash.GetHex().data());
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if (eval->state.IsError()) fprintf(stderr, "Culprit: %s\n", EncodeHexTx(tx).data());
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CTransaction tmp;
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if (mempool.lookup(tx.GetHash(), tmp))
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{
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// This is to remove a payments airdrop if it gets stuck in the mempool.
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// Miner will mine 1 invalid block, but doesnt stop them mining until a restart.
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// This would almost never happen in normal use.
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std::list<CTransaction> dummy;
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mempool.remove(tx,dummy,true);
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}
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return false;
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}
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/*
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* Test the validity of an Eval node
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*/
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bool Eval::Dispatch(const CC *cond, const CTransaction &txTo, unsigned int nIn)
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{
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struct CCcontract_info *cp;
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if (cond->codeLength == 0)
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return Invalid("empty-eval");
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uint8_t ecode = cond->code[0];
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if ( ASSETCHAINS_CCDISABLES[ecode] != 0 )
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{
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// check if a height activation has been set.
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if ( mapHeightEvalActivate[ecode] == 0 || this->GetCurrentHeight() == 0 || mapHeightEvalActivate[ecode] > this->GetCurrentHeight() )
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{
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fprintf(stderr,"%s evalcode.%d %02x\n",txTo.GetHash().GetHex().c_str(),ecode,ecode);
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fprintf(stderr, "ac_ccactivateht: evalcode.%i activates at height.%i vs current height.%i\n", ecode, mapHeightEvalActivate[ecode], this->GetCurrentHeight());
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return Invalid("disabled-code, -ac_ccenables didnt include this ecode");
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}
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}
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std::vector<uint8_t> vparams(cond->code+1, cond->code+cond->codeLength);
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if ( ecode >= EVAL_FIRSTUSER && ecode <= EVAL_LASTUSER )
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{
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if ( ASSETCHAINS_CCLIB.size() > 0 && ASSETCHAINS_CCLIB == CClib_name() )
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return CClib_Dispatch(cond,this,vparams,txTo,nIn);
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else return Invalid("mismatched -ac_cclib vs CClib_name");
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}
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cp = &CCinfos[(int32_t)ecode];
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if ( cp->didinit == 0 )
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{
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CCinit(cp,ecode);
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cp->didinit = 1;
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}
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switch ( ecode )
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{
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case EVAL_IMPORTPAYOUT:
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return ImportPayout(vparams, txTo, nIn);
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break;
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case EVAL_IMPORTCOIN:
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return ImportCoin(vparams, txTo, nIn);
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break;
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default:
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return(ProcessCC(cp,this, vparams, txTo, nIn));
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break;
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}
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return Invalid("invalid-code, dont forget to add EVAL_NEWCC to Eval::Dispatch");
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}
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bool Eval::GetSpendsConfirmed(uint256 hash, std::vector<CTransaction> &spends) const
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{
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// NOT IMPLEMENTED
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return false;
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}
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bool Eval::GetTxUnconfirmed(const uint256 &hash, CTransaction &txOut, uint256 &hashBlock) const
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{
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return(myGetTransaction(hash, txOut,hashBlock));
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/*if (!myGetTransaction(hash, txOut,hashBlock)) {
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return(myGetTransaction(hash, txOut,hashBlock));
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} else return(true);*/
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}
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bool Eval::GetTxConfirmed(const uint256 &hash, CTransaction &txOut, CBlockIndex &block) const
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{
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uint256 hashBlock;
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if (!GetTxUnconfirmed(hash, txOut, hashBlock))
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return false;
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if (hashBlock.IsNull() || !GetBlock(hashBlock, block))
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return false;
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return true;
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}
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unsigned int Eval::GetCurrentHeight() const
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{
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return chainActive.Height();
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}
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bool Eval::GetBlock(uint256 hash, CBlockIndex& blockIdx) const
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{
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auto r = mapBlockIndex.find(hash);
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if (r != mapBlockIndex.end()) {
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blockIdx = *r->second;
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return true;
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}
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fprintf(stderr, "CC Eval Error: Can't get block from index\n");
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return false;
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}
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extern int32_t hush_notaries(uint8_t pubkeys[64][33],int32_t height,uint32_t timestamp);
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int32_t Eval::GetNotaries(uint8_t pubkeys[64][33], int32_t height, uint32_t timestamp) const
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{
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return hush_notaries(pubkeys, height, timestamp);
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}
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bool Eval::CheckNotaryInputs(const CTransaction &tx, uint32_t height, uint32_t timestamp) const
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{
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if (tx.vin.size() < 11) return false;
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CrosschainAuthority auth;
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auth.requiredSigs = 11;
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auth.size = GetNotaries(auth.notaries, height, timestamp);
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return CheckTxAuthority(tx, auth);
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}
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// Get MoM from a notarization tx hash (on HUSH)
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bool Eval::GetNotarizationData(const uint256 notaryHash, NotarizationData &data) const
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{
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CTransaction notarizationTx;
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CBlockIndex block;
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if (!GetTxConfirmed(notaryHash, notarizationTx, block)) return false;
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if (!CheckNotaryInputs(notarizationTx, block.GetHeight(), block.nTime)) return false;
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if (!ParseNotarizationOpReturn(notarizationTx, data)) return false;
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return true;
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}
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uint32_t Eval::GetAssetchainsCC() const
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{
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return ASSETCHAINS_CC;
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}
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std::string Eval::GetAssetchainsSymbol() const
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{
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return std::string(SMART_CHAIN_SYMBOL);
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}
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/*
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* Notarization data, ie, OP_RETURN payload in notarization transactions
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*/
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bool ParseNotarizationOpReturn(const CTransaction &tx, NotarizationData &data)
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{
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if (tx.vout.size() < 2) return false;
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std::vector<unsigned char> vdata;
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if (!GetOpReturnData(tx.vout[1].scriptPubKey, vdata)) return false;
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bool out = E_UNMARSHAL(vdata, ss >> data);
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return out;
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}
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// Misc
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std::string EvalToStr(EvalCode c)
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{
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FOREACH_EVAL(EVAL_GENERATE_STRING);
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char s[10];
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sprintf(s, "0x%x", c);
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return std::string(s);
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}
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uint256 SafeCheckMerkleBranch(uint256 hash, const std::vector<uint256>& vMerkleBranch, int nIndex)
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{
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if (nIndex == -1)
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return uint256();
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for (auto it(vMerkleBranch.begin()); it != vMerkleBranch.end(); ++it)
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{
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if (nIndex & 1) {
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if (*it == hash) {
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// non canonical. hash may be equal to node but never on the right.
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return uint256();
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}
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hash = Hash(BEGIN(*it), END(*it), BEGIN(hash), END(hash));
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}
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else
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hash = Hash(BEGIN(hash), END(hash), BEGIN(*it), END(*it));
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nIndex >>= 1;
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}
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return hash;
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}
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uint256 GetMerkleRoot(const std::vector<uint256>& vLeaves)
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{
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bool fMutated;
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std::vector<uint256> vMerkleTree;
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return BuildMerkleTree(&fMutated, vLeaves, vMerkleTree);
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}
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