Fixes for TrustedCoin plugin:

- reset billing_info after broadcast
- when bumping tx fee, do not use Trustedcoin output

gui/qt/main_window.py

@@ -1340,9 +1340,10 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, PrintError):
             _("Mining fee") + ": " + self.format_amount_and_units(fee),
         ]
 
-        extra_fee = run_hook('get_additional_fee', self.wallet, tx)
-        if extra_fee:
-            msg.append( _("Additional fees") + ": " + self.format_amount_and_units(extra_fee) )
+        x_fee = run_hook('get_tx_extra_fee', self.wallet, tx)
+        if x_fee:
+            x_fee_address, x_fee_amount = x_fee
+            msg.append( _("Additional fees") + ": " + self.format_amount_and_units(x_fee_amount) )
 
         confirm_rate = 2 * self.config.max_fee_rate()
         if fee > confirm_rate * tx.estimated_size() / 1000:

lib/wallet.py

@@ -1030,6 +1030,11 @@ class Abstract_Wallet(PrintError):
         # ... unless there is none
         if not s:
             s = outputs
+            x_fee = run_hook('get_tx_extra_fee', self, tx)
+            if x_fee:
+                x_fee_address, x_fee_amount = x_fee
+                s = filter(lambda x: x[1]!=x_fee_address, s)
+
         # prioritize low value outputs, to get rid of dust
         s = sorted(s, key=lambda x: x[2])
         for o in s:

plugins/trustedcoin/qt.py

@@ -58,9 +58,7 @@ class Plugin(TrustedCoinPlugin):
         button = StatusBarButton(QIcon(":icons/trustedcoin-status.png"),
                                  _("TrustedCoin"), action)
         window.statusBar().addPermanentWidget(button)
-        t = Thread(target=self.request_billing_info, args=(wallet,))
-        t.setDaemon(True)
-        t.start()
+        self.start_request_thread(window.wallet)
 
     def auth_dialog(self, window):
         d = WindowModalDialog(window, _("Authorization"))
@@ -102,13 +100,10 @@ class Plugin(TrustedCoinPlugin):
         wallet = window.wallet
         if not isinstance(wallet, self.wallet_class):
             return
-        if not wallet.can_sign_without_server():
-            if wallet.billing_info is None:
-                # request billing info before forming the transaction
-                waiting_dialog(self, window).wait()
-                if wallet.billing_info is None:
-                    window.show_message('Could not contact server')
-                    return True
+        if wallet.can_sign_without_server():
+            return
+        if wallet.billing_info is None:
+            return True
         return False
 
 

plugins/trustedcoin/trustedcoin.py

@@ -237,6 +237,9 @@ class Wallet_2fa(Multisig_Wallet):
     def extra_fee(self, config):
         if self.can_sign_without_server():
             return 0
+        if self.billing_info is None:
+            self.plugin.start_request_thread(self)
+            return 0
         if self.billing_info.get('tx_remaining'):
             return 0
         if self.is_billing:
@@ -282,6 +285,8 @@ class Wallet_2fa(Multisig_Wallet):
             raw_tx = r.get('transaction')
             tx.update(raw_tx)
         self.print_error("twofactor: is complete", tx.is_complete())
+        # reset billing_info
+        self.billing_info = None
 
 
 # Utility functions
@@ -314,6 +319,7 @@ class TrustedCoinPlugin(BasePlugin):
     def __init__(self, parent, config, name):
         BasePlugin.__init__(self, parent, config, name)
         self.wallet_class.plugin = self
+        self.requesting = False
 
     @staticmethod
     def is_valid_seed(seed):
@@ -326,23 +332,34 @@ class TrustedCoinPlugin(BasePlugin):
         return True
 
     @hook
-    def get_additional_fee(self, wallet, tx):
+    def get_tx_extra_fee(self, wallet, tx):
         if type(wallet) != Wallet_2fa:
             return
         address = wallet.billing_info['billing_address']
         for _type, addr, amount in tx.outputs():
             if _type == TYPE_ADDRESS and addr == address:
-                return amount
+                return address, amount
 
     def request_billing_info(self, wallet):
+        self.print_error("request billing info")
         billing_info = server.get(wallet.get_user_id()[1])
         billing_address = make_billing_address(wallet, billing_info['billing_index'])
         assert billing_address == billing_info['billing_address']
         wallet.billing_info = billing_info
         wallet.price_per_tx = dict(billing_info['price_per_tx'])
         wallet.price_per_tx.pop(1)
+        self.requesting = False
         return True
 
+    def start_request_thread(self, wallet):
+        from threading import Thread
+        if self.requesting is False:
+            self.requesting = True
+            t = Thread(target=self.request_billing_info, args=(wallet,))
+            t.setDaemon(True)
+            t.start()
+            return t
+
     def make_seed(self):
         return Mnemonic('english').make_seed(seed_type='2fa', num_bits=128)