extract some basic code from libcryptonote_core into libcryptonote_basic

1 files changed, 347 insertions, 0 deletions

diff --git a/src/cryptonote_basic/cryptonote_basic_impl.cpp b/src/cryptonote_basic/cryptonote_basic_impl.cpp
new file mode 100644
index 000000000..338210f01
--- /dev/null
+++ b/src/cryptonote_basic/cryptonote_basic_impl.cpp
@@ -0,0 +1,347 @@
+// Copyright (c) 2014-2016, 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"
+#include "common/dns_utils.h"
+
+#undef MONERO_DEFAULT_LOG_CATEGORY
+#define MONERO_DEFAULT_LOG_CATEGORY "cn"
+
+namespace cryptonote {
+
+  struct integrated_address {
+    account_public_address adr;
+    crypto::hash8 payment_id;
+
+    BEGIN_SERIALIZE_OBJECT()
+      FIELD(adr)
+      FIELD(payment_id)
+    END_SERIALIZE()
+
+    BEGIN_KV_SERIALIZE_MAP()
+      KV_SERIALIZE(adr)
+      KV_SERIALIZE(payment_id)
+    END_KV_SERIALIZE_MAP()
+  };
+
+  /************************************************************************/
+  /* 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, uint8_t version) {
+    static_assert(DIFFICULTY_TARGET_V2%60==0&&DIFFICULTY_TARGET_V1%60==0,"difficulty targets must be a multiple of 60");
+    const int target = version < 2 ? DIFFICULTY_TARGET_V1 : DIFFICULTY_TARGET_V2;
+    const int target_minutes = target / 60;
+    const int emission_speed_factor = EMISSION_SPEED_FACTOR_PER_MINUTE - (target_minutes-1);
+
+    uint64_t base_reward = (MONEY_SUPPLY - already_generated_coins) >> emission_speed_factor;
+    if (base_reward < FINAL_SUBSIDY_PER_MINUTE*target_minutes)
+    {
+      base_reward = FINAL_SUBSIDY_PER_MINUTE*target_minutes;
+    }
+
+    uint64_t full_reward_zone = version < 2 ? CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V1 : CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2;
+
+    //make it soft
+    if (median_size < full_reward_zone) {
+      median_size = full_reward_zone;
+    }
+
+    if (current_block_size <= median_size) {
+      reward = base_reward;
+      return true;
+    }
+
+    if(current_block_size > 2 * median_size) {
+      MERROR("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;
+    // BUGFIX: 32-bit saturation bug (e.g. ARM7), the result was being
+    // treated as 32-bit by default.
+    uint64_t multiplicand = 2 * median_size - current_block_size;
+    multiplicand *= current_block_size;
+    uint64_t product_lo = mul128(base_reward, multiplicand, &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;
+  }
+  //------------------------------------------------------------------------------------
+  uint8_t get_account_integrated_address_checksum(const public_integrated_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_integrated_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));
+  }
+  //-----------------------------------------------------------------------
+  std::string get_account_integrated_address_as_str(
+      bool testnet
+    , account_public_address const & adr
+    , crypto::hash8 const & payment_id
+    )
+  {
+    uint64_t integrated_address_prefix = testnet ?
+      config::testnet::CRYPTONOTE_PUBLIC_INTEGRATED_ADDRESS_BASE58_PREFIX : config::CRYPTONOTE_PUBLIC_INTEGRATED_ADDRESS_BASE58_PREFIX;
+
+    integrated_address iadr = {
+      adr, payment_id
+    };
+    return tools::base58::encode_addr(integrated_address_prefix, t_serializable_object_to_blob(iadr));
+  }
+  //-----------------------------------------------------------------------
+  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_integrated_address_from_str(
+      account_public_address& adr
+    , bool& has_payment_id
+    , crypto::hash8& payment_id
+    , bool testnet
+    , std::string const & str
+    )
+  {
+    uint64_t address_prefix = testnet ?
+      config::testnet::CRYPTONOTE_PUBLIC_ADDRESS_BASE58_PREFIX : config::CRYPTONOTE_PUBLIC_ADDRESS_BASE58_PREFIX;
+    uint64_t integrated_address_prefix = testnet ?
+      config::testnet::CRYPTONOTE_PUBLIC_INTEGRATED_ADDRESS_BASE58_PREFIX : config::CRYPTONOTE_PUBLIC_INTEGRATED_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_L2("Invalid address format");
+        return false;
+      }
+
+      if (integrated_address_prefix == prefix)
+      {
+        has_payment_id = true;
+      }
+      else if (address_prefix == prefix)
+      {
+        has_payment_id = false;
+      }
+      else {
+        LOG_PRINT_L1("Wrong address prefix: " << prefix << ", expected " << address_prefix << " or " << integrated_address_prefix);
+        return false;
+      }
+
+      if (has_payment_id)
+      {
+        integrated_address iadr;
+        if (!::serialization::parse_binary(data, iadr))
+        {
+          LOG_PRINT_L1("Account public address keys can't be parsed");
+          return false;
+        }
+        adr = iadr.adr;
+        payment_id = iadr.payment_id;
+      }
+      else
+      {
+        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;
+      has_payment_id = false;
+    }
+
+    return true;
+  }
+  //-----------------------------------------------------------------------
+  bool get_account_address_from_str(
+      account_public_address& adr
+    , bool testnet
+    , std::string const & str
+    )
+  {
+    bool has_payment_id;
+    crypto::hash8 payment_id;
+    return get_account_integrated_address_from_str(adr, has_payment_id, payment_id, testnet, str);
+  }
+  //--------------------------------------------------------------------------------
+  bool get_account_address_from_str_or_url(
+      cryptonote::account_public_address& address
+    , bool& has_payment_id
+    , crypto::hash8& payment_id
+    , bool testnet
+    , const std::string& str_or_url
+    )
+  {
+    if (get_account_integrated_address_from_str(address, has_payment_id, payment_id, testnet, str_or_url))
+      return true;
+    bool dnssec_valid;
+    std::string address_str = tools::dns_utils::get_account_address_as_str_from_url(str_or_url, dnssec_valid);
+    return !address_str.empty() &&
+      get_account_integrated_address_from_str(address, has_payment_id, payment_id, testnet, address_str);
+  }
+  //--------------------------------------------------------------------------------
+  bool get_account_address_from_str_or_url(
+      cryptonote::account_public_address& address
+    , bool testnet
+    , const std::string& str_or_url
+    )
+  {
+    bool has_payment_id;
+    crypto::hash8 payment_id;
+    return get_account_address_from_str_or_url(address, has_payment_id, payment_id, testnet, str_or_url);
+  }
+  //--------------------------------------------------------------------------------
+  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;
+  }
+}