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// Copyright (c) 2014-2015, The Monero Project
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other
// materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be
// used to endorse or promote products derived from this software without specific
// prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
#include "include_base_utils.h"
using namespace epee;
#include "cryptonote_basic_impl.h"
#include "string_tools.h"
#include "serialization/binary_utils.h"
#include "serialization/vector.h"
#include "cryptonote_format_utils.h"
#include "cryptonote_config.h"
#include "misc_language.h"
#include "common/base58.h"
#include "crypto/hash.h"
#include "common/int-util.h"
namespace cryptonote {
/************************************************************************/
/* Cryptonote helper functions */
/************************************************************************/
//-----------------------------------------------------------------------------------------------
size_t get_max_block_size()
{
return CRYPTONOTE_MAX_BLOCK_SIZE;
}
//-----------------------------------------------------------------------------------------------
size_t get_max_tx_size()
{
return CRYPTONOTE_MAX_TX_SIZE;
}
//-----------------------------------------------------------------------------------------------
bool get_block_reward(size_t median_size, size_t current_block_size, uint64_t already_generated_coins, uint64_t &reward) {
uint64_t base_reward = (MONEY_SUPPLY - already_generated_coins) >> EMISSION_SPEED_FACTOR;
//make it soft
if (median_size < CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE) {
median_size = CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE;
}
if (current_block_size <= median_size) {
reward = base_reward;
return true;
}
if(current_block_size > 2 * median_size) {
LOG_PRINT_L4("Block cumulative size is too big: " << current_block_size << ", expected less than " << 2 * median_size);
return false;
}
assert(median_size < std::numeric_limits<uint32_t>::max());
assert(current_block_size < std::numeric_limits<uint32_t>::max());
uint64_t product_hi;
uint64_t product_lo = mul128(base_reward, current_block_size * (2 * median_size - current_block_size), &product_hi);
uint64_t reward_hi;
uint64_t reward_lo;
div128_32(product_hi, product_lo, static_cast<uint32_t>(median_size), &reward_hi, &reward_lo);
div128_32(reward_hi, reward_lo, static_cast<uint32_t>(median_size), &reward_hi, &reward_lo);
assert(0 == reward_hi);
assert(reward_lo < base_reward);
reward = reward_lo;
return true;
}
//------------------------------------------------------------------------------------
uint8_t get_account_address_checksum(const public_address_outer_blob& bl)
{
const unsigned char* pbuf = reinterpret_cast<const unsigned char*>(&bl);
uint8_t summ = 0;
for(size_t i = 0; i!= sizeof(public_address_outer_blob)-1; i++)
summ += pbuf[i];
return summ;
}
//-----------------------------------------------------------------------
std::string get_account_address_as_str(
bool testnet
, account_public_address const & adr
)
{
uint64_t address_prefix = testnet ?
config::testnet::CRYPTONOTE_PUBLIC_ADDRESS_BASE58_PREFIX : config::CRYPTONOTE_PUBLIC_ADDRESS_BASE58_PREFIX;
return tools::base58::encode_addr(address_prefix, t_serializable_object_to_blob(adr));
}
//-----------------------------------------------------------------------
bool is_coinbase(const transaction& tx)
{
if(tx.vin.size() != 1)
return false;
if(tx.vin[0].type() != typeid(txin_gen))
return false;
return true;
}
//-----------------------------------------------------------------------
bool get_account_address_from_str(
account_public_address& adr
, bool testnet
, std::string const & str
)
{
uint64_t address_prefix = testnet ?
config::testnet::CRYPTONOTE_PUBLIC_ADDRESS_BASE58_PREFIX : config::CRYPTONOTE_PUBLIC_ADDRESS_BASE58_PREFIX;
if (2 * sizeof(public_address_outer_blob) != str.size())
{
blobdata data;
uint64_t prefix;
if (!tools::base58::decode_addr(str, prefix, data))
{
LOG_PRINT_L1("Invalid address format");
return false;
}
if (address_prefix != prefix)
{
LOG_PRINT_L1("Wrong address prefix: " << prefix << ", expected " << address_prefix);
return false;
}
if (!::serialization::parse_binary(data, adr))
{
LOG_PRINT_L1("Account public address keys can't be parsed");
return false;
}
if (!crypto::check_key(adr.m_spend_public_key) || !crypto::check_key(adr.m_view_public_key))
{
LOG_PRINT_L1("Failed to validate address keys");
return false;
}
}
else
{
// Old address format
std::string buff;
if(!string_tools::parse_hexstr_to_binbuff(str, buff))
return false;
if(buff.size()!=sizeof(public_address_outer_blob))
{
LOG_PRINT_L1("Wrong public address size: " << buff.size() << ", expected size: " << sizeof(public_address_outer_blob));
return false;
}
public_address_outer_blob blob = *reinterpret_cast<const public_address_outer_blob*>(buff.data());
if(blob.m_ver > CRYPTONOTE_PUBLIC_ADDRESS_TEXTBLOB_VER)
{
LOG_PRINT_L1("Unknown version of public address: " << blob.m_ver << ", expected " << CRYPTONOTE_PUBLIC_ADDRESS_TEXTBLOB_VER);
return false;
}
if(blob.check_sum != get_account_address_checksum(blob))
{
LOG_PRINT_L1("Wrong public address checksum");
return false;
}
//we success
adr = blob.m_address;
}
return true;
}
bool operator ==(const cryptonote::transaction& a, const cryptonote::transaction& b) {
return cryptonote::get_transaction_hash(a) == cryptonote::get_transaction_hash(b);
}
bool operator ==(const cryptonote::block& a, const cryptonote::block& b) {
return cryptonote::get_block_hash(a) == cryptonote::get_block_hash(b);
}
}
//--------------------------------------------------------------------------------
bool parse_hash256(const std::string str_hash, crypto::hash& hash)
{
std::string buf;
bool res = epee::string_tools::parse_hexstr_to_binbuff(str_hash, buf);
if (!res || buf.size() != sizeof(crypto::hash))
{
std::cout << "invalid hash format: <" << str_hash << '>' << std::endl;
return false;
}
else
{
buf.copy(reinterpret_cast<char *>(&hash), sizeof(crypto::hash));
return true;
}
}
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