Fixes #759 Add sanity check on restore height
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@ -1588,7 +1588,17 @@ bool simple_wallet::init(const boost::program_options::variables_map& vm)
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}
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}
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if (m_restoring)
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{
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uint64_t estimate_height = m_wallet->estimate_blockchain_height();
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if (m_restore_height >= estimate_height)
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{
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success_msg_writer() << tr("Restore height ") << m_restore_height << (" is not yet reached. The current estimated height is ") << estimate_height;
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std::string confirm = input_line(tr("Still apply restore height? (Y/Yes/N/No): "));
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if (std::cin.eof() || command_line::is_no(confirm))
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m_restore_height = 0;
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}
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m_wallet->set_refresh_from_block_height(m_restore_height);
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}
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}
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else
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{
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@ -2413,26 +2413,7 @@ crypto::secret_key wallet2::generate(const std::string& wallet_, const std::stri
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// try asking the daemon first
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if(m_refresh_from_block_height == 0 && !recover){
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std::string err;
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uint64_t height = 0;
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// we get the max of approximated height and known height
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// approximated height is the least of daemon target height
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// (the max of what the other daemons are claiming is their
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// height) and the theoretical height based on the local
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// clock. This will be wrong only if both the local clock
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// is bad *and* a peer daemon claims a highest height than
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// the real chain.
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// known height is the height the local daemon is currently
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// synced to, it will be lower than the real chain height if
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// the daemon is currently syncing.
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height = get_approximate_blockchain_height();
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uint64_t target_height = get_daemon_blockchain_target_height(err);
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if (err.empty() && target_height < height)
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height = target_height;
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uint64_t local_height = get_daemon_blockchain_height(err);
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if (err.empty() && local_height > height)
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height = local_height;
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uint64_t height = estimate_blockchain_height();
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m_refresh_from_block_height = height >= blocks_per_month ? height - blocks_per_month : 0;
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}
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@ -2451,6 +2432,38 @@ crypto::secret_key wallet2::generate(const std::string& wallet_, const std::stri
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return retval;
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}
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uint64_t wallet2::estimate_blockchain_height()
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{
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// -1 month for fluctuations in block time and machine date/time setup.
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// avg seconds per block
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const int seconds_per_block = DIFFICULTY_TARGET_V2;
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// ~num blocks per month
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const uint64_t blocks_per_month = 60*60*24*30/seconds_per_block;
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// try asking the daemon first
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std::string err;
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uint64_t height = 0;
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// we get the max of approximated height and known height
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// approximated height is the least of daemon target height
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// (the max of what the other daemons are claiming is their
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// height) and the theoretical height based on the local
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// clock. This will be wrong only if both the local clock
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// is bad *and* a peer daemon claims a highest height than
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// the real chain.
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// known height is the height the local daemon is currently
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// synced to, it will be lower than the real chain height if
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// the daemon is currently syncing.
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height = get_approximate_blockchain_height();
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uint64_t target_height = get_daemon_blockchain_target_height(err);
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if (err.empty() && target_height < height)
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height = target_height;
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uint64_t local_height = get_daemon_blockchain_height(err);
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if (err.empty() && local_height > height)
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height = local_height;
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return height;
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}
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/*!
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* \brief Creates a watch only wallet from a public address and a view secret key.
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* \param wallet_ Name of wallet file
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@ -709,6 +709,7 @@ namespace tools
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* \brief Calculates the approximate blockchain height from current date/time.
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*/
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uint64_t get_approximate_blockchain_height() const;
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uint64_t estimate_blockchain_height();
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std::vector<size_t> select_available_outputs_from_histogram(uint64_t count, bool atleast, bool unlocked, bool allow_rct, bool trusted_daemon);
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std::vector<size_t> select_available_outputs(const std::function<bool(const transfer_details &td)> &f);
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std::vector<size_t> select_available_unmixable_outputs(bool trusted_daemon);
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