wallet: add sweep_below function

It sweeps all outputs below the given threshold

This is available via the existing sweep_all RPC, by setting
amount_threshold the desired amount (in atomic units)

src/simplewallet/simplewallet.cpp

@@ -684,6 +684,7 @@ simple_wallet::simple_wallet()
   m_cmd_binder.set_handler("locked_transfer", boost::bind(&simple_wallet::locked_transfer, this, _1), tr("locked_transfer [<mixin_count>] <addr> <amount> <lockblocks>(Number of blocks to lock the transaction for, max 1000000) [<payment_id>]"));
   m_cmd_binder.set_handler("sweep_unmixable", boost::bind(&simple_wallet::sweep_unmixable, this, _1), tr("Send all unmixable outputs to yourself with mixin 0"));
   m_cmd_binder.set_handler("sweep_all", boost::bind(&simple_wallet::sweep_all, this, _1), tr("sweep_all [mixin] address [payment_id] - Send all unlocked balance to an address"));
+  m_cmd_binder.set_handler("sweep_below", boost::bind(&simple_wallet::sweep_below, this, _1), tr("sweep_below <amount_threshold> [mixin] address [payment_id] - Send all unlocked outputs below the threshold to an address"));
   m_cmd_binder.set_handler("donate", boost::bind(&simple_wallet::donate, this, _1), tr("donate [<mixin_count>] <amount> [payment_id] - Donate <amount> to the development team (donate.getmonero.org)"));
   m_cmd_binder.set_handler("sign_transfer", boost::bind(&simple_wallet::sign_transfer, this, _1), tr("Sign a transaction from a file"));
   m_cmd_binder.set_handler("submit_transfer", boost::bind(&simple_wallet::submit_transfer, this, _1), tr("Submit a signed transaction from a file"));
@@ -2600,7 +2601,7 @@ bool simple_wallet::sweep_unmixable(const std::vector<std::string> &args_)
   return true;
 }
 //----------------------------------------------------------------------------------------------------
-bool simple_wallet::sweep_all(const std::vector<std::string> &args_)
+bool simple_wallet::sweep_main(uint64_t below, const std::vector<std::string> &args_)
 {
   if (m_wallet->ask_password() && !get_and_verify_password()) { return true; }
   if (!try_connect_to_daemon())
@@ -2708,7 +2709,7 @@ bool simple_wallet::sweep_all(const std::vector<std::string> &args_)
   try
   {
     // figure out what tx will be necessary
-    auto ptx_vector = m_wallet->create_transactions_all(address, fake_outs_count, 0 /* unlock_time */, 0 /* unused fee arg*/, extra, m_trusted_daemon);
+    auto ptx_vector = m_wallet->create_transactions_all(below, address, fake_outs_count, 0 /* unlock_time */, 0 /* unused fee arg*/, extra, m_trusted_daemon);
 
     if (ptx_vector.empty())
     {
@@ -2861,6 +2862,27 @@ bool simple_wallet::sweep_all(const std::vector<std::string> &args_)
   return true;
 }
 //----------------------------------------------------------------------------------------------------
+bool simple_wallet::sweep_all(const std::vector<std::string> &args_)
+{
+  return sweep_main(0, args_);
+}
+//----------------------------------------------------------------------------------------------------
+bool simple_wallet::sweep_below(const std::vector<std::string> &args_)
+{
+  uint64_t below = 0;
+  if (args_.size() < 1)
+  {
+    fail_msg_writer() << tr("missing amount threshold");
+    return true;
+  }
+  if (!cryptonote::parse_amount(below, args_[0]))
+  {
+    fail_msg_writer() << tr("invalid amount threshold");
+    return true;
+  }
+  return sweep_main(below, std::vector<std::string>(++args_.begin(), args_.end()));
+}
+//----------------------------------------------------------------------------------------------------
 bool simple_wallet::donate(const std::vector<std::string> &args_)
 {
   std::vector<std::string> local_args = args_;

src/simplewallet/simplewallet.h

@@ -134,7 +134,9 @@ namespace cryptonote
     bool transfer(const std::vector<std::string> &args);
     bool transfer_new(const std::vector<std::string> &args);
     bool locked_transfer(const std::vector<std::string> &args);
+    bool sweep_main(uint64_t below, const std::vector<std::string> &args);
     bool sweep_all(const std::vector<std::string> &args);
+    bool sweep_below(const std::vector<std::string> &args);
     bool sweep_unmixable(const std::vector<std::string> &args);
     bool donate(const std::vector<std::string> &args);
     bool sign_transfer(const std::vector<std::string> &args);

src/wallet/api/wallet.cpp

@@ -952,7 +952,7 @@ PendingTransaction *WalletImpl::createTransaction(const string &dst_addr, const
                                                                           static_cast<uint32_t>(priority),
                                                                           extra, m_trustedDaemon);
             } else {
-                transaction->m_pending_tx = m_wallet->create_transactions_all(addr, fake_outs_count, 0 /* unlock_time */,
+                transaction->m_pending_tx = m_wallet->create_transactions_all(0, addr, fake_outs_count, 0 /* unlock_time */,
                                                                           static_cast<uint32_t>(priority),
                                                                           extra, m_trustedDaemon);
             }

src/wallet/wallet2.cpp

@@ -4581,7 +4581,7 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_2(std::vector<cryp
   return ptx_vector;
 }
 
-std::vector<wallet2::pending_tx> wallet2::create_transactions_all(const cryptonote::account_public_address &address, const size_t fake_outs_count, const uint64_t unlock_time, uint32_t priority, const std::vector<uint8_t> extra, bool trusted_daemon)
+std::vector<wallet2::pending_tx> wallet2::create_transactions_all(uint64_t below, const cryptonote::account_public_address &address, const size_t fake_outs_count, const uint64_t unlock_time, uint32_t priority, const std::vector<uint8_t> extra, bool trusted_daemon)
 {
   std::vector<size_t> unused_transfers_indices;
   std::vector<size_t> unused_dust_indices;
@@ -4593,10 +4593,13 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_all(const cryptono
     const transfer_details& td = m_transfers[i];
     if (!td.m_spent && (use_rct ? true : !td.is_rct()) && is_transfer_unlocked(td))
     {
-      if (td.is_rct() || is_valid_decomposed_amount(td.amount()))
+      if (below == 0 || td.amount() < below)
-        unused_transfers_indices.push_back(i);
+      {
-      else
+        if (td.is_rct() || is_valid_decomposed_amount(td.amount()))
-        unused_dust_indices.push_back(i);
+          unused_transfers_indices.push_back(i);
+        else
+          unused_dust_indices.push_back(i);
+      }
     }
   }
 

src/wallet/wallet2.h

@@ -414,7 +414,7 @@ namespace tools
     bool load_tx(const std::string &signed_filename, std::vector<tools::wallet2::pending_tx> &ptx, std::function<bool(const signed_tx_set&)> accept_func = NULL);
     std::vector<pending_tx> create_transactions(std::vector<cryptonote::tx_destination_entry> dsts, const size_t fake_outs_count, const uint64_t unlock_time, uint32_t priority, 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, uint32_t priority, 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, uint32_t priority, const std::vector<uint8_t> extra, bool trusted_daemon);
+    std::vector<wallet2::pending_tx> create_transactions_all(uint64_t below, const cryptonote::account_public_address &address, const size_t fake_outs_count, const uint64_t unlock_time, uint32_t priority, const std::vector<uint8_t> extra, bool trusted_daemon);
     std::vector<wallet2::pending_tx> create_transactions_from(const cryptonote::account_public_address &address, std::vector<size_t> unused_transfers_indices, std::vector<size_t> unused_dust_indices, const size_t fake_outs_count, const uint64_t unlock_time, uint32_t priority, const std::vector<uint8_t> extra, bool trusted_daemon);
     std::vector<pending_tx> create_unmixable_sweep_transactions(bool trusted_daemon);
     bool check_connection(uint32_t *version = NULL, uint32_t timeout = 200000);

src/wallet/wallet_rpc_server.cpp

@@ -631,7 +631,7 @@ namespace tools
 
     try
     {
-      std::vector<wallet2::pending_tx> ptx_vector = m_wallet->create_transactions_all(dsts[0].addr, req.mixin, req.unlock_time, req.priority, extra, m_trusted_daemon);
+      std::vector<wallet2::pending_tx> ptx_vector = m_wallet->create_transactions_all(req.below_amount, dsts[0].addr, req.mixin, req.unlock_time, req.priority, extra, m_trusted_daemon);
 
       m_wallet->commit_tx(ptx_vector);
 

src/wallet/wallet_rpc_server_commands_defs.h

@@ -234,6 +234,7 @@ namespace wallet_rpc
       uint64_t unlock_time;
       std::string payment_id;
       bool get_tx_keys;
+      uint64_t below_amount;
 
       BEGIN_KV_SERIALIZE_MAP()
         KV_SERIALIZE(address)
@@ -242,6 +243,7 @@ namespace wallet_rpc
         KV_SERIALIZE(unlock_time)
         KV_SERIALIZE(payment_id)
         KV_SERIALIZE(get_tx_keys)
+        KV_SERIALIZE(below_amount)
       END_KV_SERIALIZE_MAP()
     };