From 296ae46ed8f8f6e5f986f978febad302e3df231a Mon Sep 17 00:00:00 2001 From: Antonio Juarez Date: Mon, 3 Mar 2014 22:07:58 +0000 Subject: moved all stuff to github --- src/cryptonote_core/cryptonote_basic_impl.cpp | 193 ++++++++++++++++++++++++++ 1 file changed, 193 insertions(+) create mode 100644 src/cryptonote_core/cryptonote_basic_impl.cpp (limited to 'src/cryptonote_core/cryptonote_basic_impl.cpp') diff --git a/src/cryptonote_core/cryptonote_basic_impl.cpp b/src/cryptonote_core/cryptonote_basic_impl.cpp new file mode 100644 index 000000000..b320a3463 --- /dev/null +++ b/src/cryptonote_core/cryptonote_basic_impl.cpp @@ -0,0 +1,193 @@ +// Copyright (c) 2012-2013 The Cryptonote developers +// Distributed under the MIT/X11 software license, see the accompanying +// file COPYING or http://www.opensource.org/licenses/mit-license.php. + + +#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; + } + //----------------------------------------------------------------------------------------------- + uint64_t get_block_reward(std::vector& last_blocks_sizes, size_t current_block_size, bool& block_too_big, uint64_t already_generated_coins) + { + block_too_big = false; + + uint64_t base_reward = (MONEY_SUPPLY - already_generated_coins) >> 18; + + if(current_block_size < CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE) + return base_reward; + + size_t med_sz = misc_utils::median(last_blocks_sizes); + + //make it soft + if(med_sz < CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE) + med_sz = CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE; + + if(current_block_size > med_sz) + { + if(current_block_size > med_sz*2) + { + LOG_PRINT_L0("Block cumulative size is too big: " << current_block_size << ", expected less than " << med_sz*2); + block_too_big = true; + return 0; + } + + assert(med_sz < std::numeric_limits::max()); + assert(current_block_size < std::numeric_limits::max()); + + uint64_t product_hi; + uint64_t product_lo = mul128(base_reward, current_block_size * (2 * med_sz - current_block_size), &product_hi); + + uint64_t reward_hi; + uint64_t reward_lo; + div128_32(product_hi, product_lo, static_cast(med_sz), &reward_hi, &reward_lo); + div128_32(reward_hi, reward_lo, static_cast(med_sz), &reward_hi, &reward_lo); + assert(0 == reward_hi); + assert(reward_lo < base_reward); + + return reward_lo; + }else + return base_reward; + } + //------------------------------------------------------------------------------------ + uint8_t get_account_address_checksum(const public_address_outer_blob& bl) + { + const unsigned char* pbuf = reinterpret_cast(&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(const account_public_address& adr) + { + return tools::base58::encode_addr(CRYPTONOTE_PUBLIC_ADDRESS_BASE58_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, const std::string& str) + { + if (2 * sizeof(public_address_outer_blob) != str.size()) + { + blobdata data; + uint64_t prefix; + if (!tools::base58::decode_addr(str, prefix, data)) + { + LOG_PRINT_L0("Invalid address format"); + return false; + } + + if (CRYPTONOTE_PUBLIC_ADDRESS_BASE58_PREFIX != prefix) + { + LOG_PRINT_L0("Wrong address prefix: " << prefix << ", expected " << CRYPTONOTE_PUBLIC_ADDRESS_BASE58_PREFIX); + return false; + } + + if (!::serialization::parse_binary(data, adr)) + { + LOG_PRINT_L0("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_L0("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_L0("Wrong public address size: " << buff.size() << ", expected size: " << sizeof(public_address_outer_blob)); + return false; + } + + public_address_outer_blob blob = *reinterpret_cast(buff.data()); + + + if(blob.m_ver > CRYPTONOTE_PUBLIC_ADDRESS_TEXTBLOB_VER) + { + LOG_PRINT_L0("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_L0("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(&hash), sizeof(crypto::hash)); + return true; + } +} -- cgit v1.2.3