Distinguish "not enough money" and "not enough unlocked money"

Fix #1530

4 files changed, 64 insertions, 10 deletions

diff --git a/src/wallet/api/wallet.cpp b/src/wallet/api/wallet.cpp
index db7e60cd7..76695272b 100644
--- a/src/wallet/api/wallet.cpp
+++ b/src/wallet/api/wallet.cpp
@@ -1147,7 +1147,7 @@ PendingTransaction *WalletImpl::createTransaction(const string &dst_addr, const
             m_errorString = (boost::format(tr("failed to get random outputs to mix: %s")) % e.what()).str();
             m_status = Status_Error;
 
-        } catch (const tools::error::not_enough_money& e) {
+        } catch (const tools::error::not_enough_unlocked_money& e) {
             m_status = Status_Error;
             std::ostringstream writer;
 
@@ -1156,6 +1156,15 @@ PendingTransaction *WalletImpl::createTransaction(const string &dst_addr, const
                       print_money(e.tx_amount());
             m_errorString = writer.str();
 
+        } catch (const tools::error::not_enough_money& e) {
+            m_status = Status_Error;
+            std::ostringstream writer;
+
+            writer << boost::format(tr("not enough money to transfer, overall balance only %s, sent amount %s")) %
+                      print_money(e.available()) %
+                      print_money(e.tx_amount());
+            m_errorString = writer.str();
+
         } catch (const tools::error::tx_not_possible& e) {
             m_status = Status_Error;
             std::ostringstream writer;
@@ -1241,7 +1250,7 @@ PendingTransaction *WalletImpl::createSweepUnmixableTransaction()
             m_errorString = tr("failed to get random outputs to mix");
             m_status = Status_Error;
 
-        } catch (const tools::error::not_enough_money& e) {
+        } catch (const tools::error::not_enough_unlocked_money& e) {
             m_status = Status_Error;
             std::ostringstream writer;
 
@@ -1250,6 +1259,15 @@ PendingTransaction *WalletImpl::createSweepUnmixableTransaction()
                       print_money(e.tx_amount());
             m_errorString = writer.str();
 
+        } catch (const tools::error::not_enough_money& e) {
+            m_status = Status_Error;
+            std::ostringstream writer;
+
+            writer << boost::format(tr("not enough money to transfer, overall balance only %s, sent amount %s")) %
+                      print_money(e.available()) %
+                      print_money(e.tx_amount());
+            m_errorString = writer.str();
+
         } catch (const tools::error::tx_not_possible& e) {
             m_status = Status_Error;
             std::ostringstream writer;
diff --git a/src/wallet/wallet2.cpp b/src/wallet/wallet2.cpp
index cc0e9e7e2..61979ecf8 100644
--- a/src/wallet/wallet2.cpp
+++ b/src/wallet/wallet2.cpp
@@ -4441,7 +4441,7 @@ void wallet2::transfer_selected(const std::vector<cryptonote::tx_destination_ent
   }
 
   LOG_PRINT_L2("wanted " << print_money(needed_money) << ", found " << print_money(found_money) << ", fee " << print_money(fee));
-  THROW_WALLET_EXCEPTION_IF(found_money < needed_money, error::not_enough_money, found_money, needed_money - fee, fee);
+  THROW_WALLET_EXCEPTION_IF(found_money < needed_money, error::not_enough_unlocked_money, found_money, needed_money - fee, fee);
 
   uint32_t subaddr_account = m_transfers[*selected_transfers.begin()].m_subaddr_index.major;
   for (auto i = ++selected_transfers.begin(); i != selected_transfers.end(); ++i)
@@ -4598,7 +4598,7 @@ void wallet2::transfer_selected_rct(std::vector<cryptonote::tx_destination_entry
   }
 
   LOG_PRINT_L2("wanted " << print_money(needed_money) << ", found " << print_money(found_money) << ", fee " << print_money(fee));
-  THROW_WALLET_EXCEPTION_IF(found_money < needed_money, error::not_enough_money, found_money, needed_money - fee, fee);
+  THROW_WALLET_EXCEPTION_IF(found_money < needed_money, error::not_enough_unlocked_money, found_money, needed_money - fee, fee);
 
   uint32_t subaddr_account = m_transfers[*selected_transfers.begin()].m_subaddr_index.major;
   for (auto i = ++selected_transfers.begin(); i != selected_transfers.end(); ++i)
@@ -5475,6 +5475,15 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_2(std::vector<cryp
     }
   }
 
+  // early out if we know we can't make it anyway
+  // we could also check for being within FEE_PER_KB, but if the fee calculation
+  // ever changes, this might be missed, so let this go through
+  // first check overall balance is enough, then unlocked one, so we throw distinct exceptions
+  THROW_WALLET_EXCEPTION_IF(needed_money > balance(), error::not_enough_money,
+      unlocked_balance(), needed_money, 0);
+  THROW_WALLET_EXCEPTION_IF(needed_money > unlocked_balance(), error::not_enough_unlocked_money,
+      unlocked_balance(), needed_money, 0);
+
   // shuffle & sort output indices
   {
     std::random_device rd;
diff --git a/src/wallet/wallet2.h b/src/wallet/wallet2.h
index 26680c3da..55346cf49 100644
--- a/src/wallet/wallet2.h
+++ b/src/wallet/wallet2.h
@@ -1249,10 +1249,10 @@ namespace tools
     }
 
     // randomly select inputs for transaction
-    // throw if requested send amount is greater than amount available to send
+    // throw if requested send amount is greater than (unlocked) amount available to send
     std::list<size_t> selected_transfers;
     uint64_t found_money = select_transfers(needed_money, unused_transfers_indices, selected_transfers, trusted_daemon);
-    THROW_WALLET_EXCEPTION_IF(found_money < needed_money, error::not_enough_money, found_money, needed_money - fee, fee);
+    THROW_WALLET_EXCEPTION_IF(found_money < needed_money, error::not_enough_unlocked_money, found_money, needed_money - fee, fee);
 
     uint32_t subaddr_account = m_transfers[*selected_transfers.begin()].m_subaddr_index.major;
     for (auto i = ++selected_transfers.begin(); i != selected_transfers.end(); ++i)
diff --git a/src/wallet/wallet_errors.h b/src/wallet/wallet_errors.h
index d1f4a796d..9d66f125e 100644
--- a/src/wallet/wallet_errors.h
+++ b/src/wallet/wallet_errors.h
@@ -68,6 +68,7 @@ namespace tools
     //         get_tx_pool_error
     //       transfer_error *
     //         get_random_outs_general_error
+    //         not_enough_unlocked_money
     //         not_enough_money
     //         tx_not_possible
     //         not_enough_outs_to_mix
@@ -356,11 +357,37 @@ namespace tools
     //----------------------------------------------------------------------------------------------------
     typedef failed_rpc_request<transfer_error, get_random_outs_error_message_index> get_random_outs_error;
     //----------------------------------------------------------------------------------------------------
+    struct not_enough_unlocked_money : public transfer_error
+    {
+      explicit not_enough_unlocked_money(std::string&& loc, uint64_t available, uint64_t tx_amount, uint64_t fee)
+        : transfer_error(std::move(loc), "not enough unlocked money")
+        , m_available(available)
+        , m_tx_amount(tx_amount)
+      {
+      }
+
+      uint64_t available() const { return m_available; }
+      uint64_t tx_amount() const { return m_tx_amount; }
+
+      std::string to_string() const
+      {
+        std::ostringstream ss;
+        ss << transfer_error::to_string() <<
+          ", available = " << cryptonote::print_money(m_available) <<
+          ", tx_amount = " << cryptonote::print_money(m_tx_amount);
+        return ss.str();
+      }
+
+    private:
+      uint64_t m_available;
+      uint64_t m_tx_amount;
+    };
+    //----------------------------------------------------------------------------------------------------
     struct not_enough_money : public transfer_error
     {
-      explicit not_enough_money(std::string&& loc, uint64_t availbable, uint64_t tx_amount, uint64_t fee)
+      explicit not_enough_money(std::string&& loc, uint64_t available, uint64_t tx_amount, uint64_t fee)
         : transfer_error(std::move(loc), "not enough money")
-        , m_available(availbable)
+        , m_available(available)
         , m_tx_amount(tx_amount)
       {
       }
@@ -384,9 +411,9 @@ namespace tools
     //----------------------------------------------------------------------------------------------------
     struct tx_not_possible : public transfer_error
     {
-      explicit tx_not_possible(std::string&& loc, uint64_t availbable, uint64_t tx_amount, uint64_t fee)
+      explicit tx_not_possible(std::string&& loc, uint64_t available, uint64_t tx_amount, uint64_t fee)
         : transfer_error(std::move(loc), "tx not possible")
-        , m_available(availbable)
+        , m_available(available)
         , m_tx_amount(tx_amount)
         , m_fee(fee)
       {