core_read.cpp

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// Copyright (c) 2009-2014 The Bitcoin developers
// Copyright (c) 2015-2018 The PIVX developers
// Copyright (c) 2018-2020 The DAPS Project developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
#include "core_io.h"
 
#include "primitives/block.h"
#include "primitives/transaction.h"
#include "script/script.h"
#include "serialize.h"
#include "streams.h"
#include <univalue.h>
#include "util.h"
#include "utilstrencodings.h"
#include "version.h"
 
#include <boost/algorithm/string/classification.hpp>
#include <boost/algorithm/string/predicate.hpp>
#include <boost/algorithm/string/replace.hpp>
#include <boost/algorithm/string/split.hpp>
#include <boost/assign/list_of.hpp>
 
 
CScript ParseScript(std::string s)
{
    CScript result;
 
    static std::map<std::string, opcodetype> mapOpNames;
 
    std::vector<std::string> words;
    boost::algorithm::split(words, s, boost::algorithm::is_any_of(" \t\n"), boost::algorithm::token_compress_on);
 
    for (std::vector<std::string>::const_iterator w = words.begin(); w != words.end(); ++w) {
        if (w->empty()) {
            // Empty string, ignore. (boost::split given '' will return one word)
        } else if (all(*w, boost::algorithm::is_digit()) ||
                   (boost::algorithm::starts_with(*w, "-") && all(std::string(w->begin() + 1, w->end()), boost::algorithm::is_digit()))) {
            // Number
            int64_t n = atoi64(*w);
            result << n;
        } else if (boost::algorithm::starts_with(*w, "0x") && (w->begin() + 2 != w->end()) && IsHex(std::string(w->begin() + 2, w->end()))) {
            // Raw hex data, inserted NOT pushed onto stack:
            std::vector<unsigned char> raw = ParseHex(std::string(w->begin() + 2, w->end()));
            result.insert(result.end(), raw.begin(), raw.end());
        } else if (w->size() >= 2 && boost::algorithm::starts_with(*w, "'") && boost::algorithm::ends_with(*w, "'")) {
            // Single-quoted string, pushed as data. NOTE: this is poor-man's
            // parsing, spaces/tabs/newlines in single-quoted strings won't work.
            std::vector<unsigned char> value(w->begin() + 1, w->end() - 1);
            result << value;
        } else if (mapOpNames.count(*w)) {
            // opcode, e.g. OP_ADD or ADD:
            result << mapOpNames[*w];
        } else {
            throw std::runtime_error("script parse error");
        }
    }
 
    return result;
}
 
bool DecodeHexTx(CTransaction& tx, const std::string& strHexTx)
{
    if (!IsHex(strHexTx))
        return false;
 
    std::vector<unsigned char> txData(ParseHex(strHexTx));
    CDataStream ssData(txData, SER_NETWORK, PROTOCOL_VERSION);
    try {
        ssData >> tx;
    } catch (const std::exception&) {
        return false;
    }
 
    return true;
}
 
bool DecodeHexBlk(CBlock& block, const std::string& strHexBlk)
{
    if (!IsHex(strHexBlk))
        return false;
 
    std::vector<unsigned char> blockData(ParseHex(strHexBlk));
    CDataStream ssBlock(blockData, SER_NETWORK, PROTOCOL_VERSION);
    try {
        ssBlock >> block;
    } catch (const std::exception&) {
        return false;
    }
 
    return true;
}
 
uint256 ParseHashUV(const UniValue& v, const std::string& strName)
{
    std::string strHex;
    if (v.isStr())
        strHex = v.getValStr();
    return ParseHashStr(strHex, strName); // Note: ParseHashStr("") throws a std::runtime_error
}
 
uint256 ParseHashStr(const std::string& strHex, const std::string& strName)
{
    if (!IsHex(strHex)) // Note: IsHex("") is false
        throw std::runtime_error(strName + " must be hexadecimal string (not '" + strHex + "')");
 
    uint256 result;
    result.SetHex(strHex);
    return result;
}
 
std::vector<unsigned char> ParseHexUV(const UniValue& v, const std::string& strName)
{
    std::string strHex;
    if (v.isStr())
        strHex = v.getValStr();
    if (!IsHex(strHex))
        throw std::runtime_error(strName + " must be hexadecimal string (not '" + strHex + "')");
    return ParseHex(strHex);
}