wallet: add a fee multiplier

Fee can now be multiplied by 2 or 3, if users want to give
priority to their transactions. There are only three levels
to avoid too much fingerprinting. Default is 1 (minimum fee).
The default multiplier can be set by "set fee-multiplier X".

1 files changed, 9 insertions, 5 deletions

diff --git a/src/wallet/wallet2.h b/src/wallet/wallet2.h
index c2d387acd..cecf090f4 100644
--- a/src/wallet/wallet2.h
+++ b/src/wallet/wallet2.h
@@ -88,10 +88,10 @@ namespace tools
     };
 
   private:
-    wallet2(const wallet2&) : m_run(true), m_callback(0), m_testnet(false), m_always_confirm_transfers (false), m_store_tx_info(true), m_default_mixin(0), m_refresh_type(RefreshOptimizeCoinbase), m_auto_refresh(true), m_refresh_from_block_height(0) {}
+    wallet2(const wallet2&) : m_run(true), m_callback(0), m_testnet(false), m_always_confirm_transfers (false), m_store_tx_info(true), m_default_mixin(0), m_default_fee_multiplier(0), m_refresh_type(RefreshOptimizeCoinbase), m_auto_refresh(true), m_refresh_from_block_height(0) {}
 
   public:
-    wallet2(bool testnet = false, bool restricted = false) : m_run(true), m_callback(0), m_testnet(testnet), m_restricted(restricted), is_old_file_format(false), m_store_tx_info(true), m_default_mixin(0), m_refresh_type(RefreshOptimizeCoinbase), m_auto_refresh(true), m_refresh_from_block_height(0) {}
+    wallet2(bool testnet = false, bool restricted = false) : m_run(true), m_callback(0), m_testnet(testnet), m_restricted(restricted), is_old_file_format(false), m_store_tx_info(true), m_default_mixin(0), m_default_fee_multiplier(0), m_refresh_type(RefreshOptimizeCoinbase), m_auto_refresh(true), m_refresh_from_block_height(0) {}
     struct transfer_details
     {
       uint64_t m_block_height;
@@ -291,9 +291,9 @@ namespace tools
 
     void commit_tx(pending_tx& ptx_vector);
     void commit_tx(std::vector<pending_tx>& ptx_vector);
-    std::vector<pending_tx> create_transactions(std::vector<cryptonote::tx_destination_entry> dsts, const size_t fake_outs_count, const uint64_t unlock_time, const uint64_t fee, const std::vector<uint8_t> extra, bool trusted_daemon);
-    std::vector<wallet2::pending_tx> create_transactions_2(std::vector<cryptonote::tx_destination_entry> dsts, const size_t fake_outs_count, const uint64_t unlock_time, const uint64_t fee_UNUSED, const std::vector<uint8_t> extra, bool trusted_daemon);
-    std::vector<wallet2::pending_tx> create_transactions_all(const cryptonote::account_public_address &address, const size_t fake_outs_count, const uint64_t unlock_time, const uint64_t fee_UNUSED, const std::vector<uint8_t> extra, bool trusted_daemon);
+    std::vector<pending_tx> create_transactions(std::vector<cryptonote::tx_destination_entry> dsts, const size_t fake_outs_count, const uint64_t unlock_time, uint64_t fee_multiplier, const std::vector<uint8_t> extra, bool trusted_daemon);
+    std::vector<wallet2::pending_tx> create_transactions_2(std::vector<cryptonote::tx_destination_entry> dsts, const size_t fake_outs_count, const uint64_t unlock_time, uint64_t fee_multiplier, const std::vector<uint8_t> extra, bool trusted_daemon);
+    std::vector<wallet2::pending_tx> create_transactions_all(const cryptonote::account_public_address &address, const size_t fake_outs_count, const uint64_t unlock_time, uint64_t fee_multiplier, const std::vector<uint8_t> extra, bool trusted_daemon);
     std::vector<pending_tx> create_unmixable_sweep_transactions(bool trusted_daemon);
     bool check_connection();
     void get_transfers(wallet2::transfer_container& incoming_transfers) const;
@@ -363,6 +363,8 @@ namespace tools
     void store_tx_info(bool store) { m_store_tx_info = store; }
     uint32_t default_mixin() const { return m_default_mixin; }
     void default_mixin(uint32_t m) { m_default_mixin = m; }
+    uint32_t get_default_fee_multiplier() const { return m_default_fee_multiplier; }
+    void set_default_fee_multiplier(uint32_t m) { m_default_fee_multiplier = m; }
     bool auto_refresh() const { return m_auto_refresh; }
     void auto_refresh(bool r) { m_auto_refresh = r; }
 
@@ -423,6 +425,7 @@ namespace tools
     uint64_t get_upper_tranaction_size_limit();
     void check_pending_txes();
     std::vector<uint64_t> get_unspent_amounts_vector();
+    uint64_t sanitize_fee_multiplier(uint64_t fee_multiplier) const;
 
     cryptonote::account_base m_account;
     std::string m_daemon_address;
@@ -455,6 +458,7 @@ namespace tools
     bool m_always_confirm_transfers;
     bool m_store_tx_info; /*!< request txkey to be returned in RPC, and store in the wallet cache file */
     uint32_t m_default_mixin;
+    uint32_t m_default_fee_multiplier;
     RefreshType m_refresh_type;
     bool m_auto_refresh;
     uint64_t m_refresh_from_block_height;