qml: add plumbing for duplicate master pubkey check, fix multisig end conditions

electrum/gui/qml/components/wizard/WCCreateSeed.qml

@@ -4,7 +4,6 @@ import QtQuick.Controls 2.1
 
 import org.electrum 1.0
 
-import ".."
 import "../controls"
 
 WizardComponent {
@@ -77,7 +76,7 @@ WizardComponent {
     }
 
     Component.onCompleted: {
-        bitcoin.generate_seed(wizard_data['seed_type'])
+        bitcoin.generateSeed(wizard_data['seed_type'])
     }
 
     Bitcoin {

electrum/gui/qml/components/wizard/WCHaveMasterKey.qml

@@ -23,7 +23,21 @@ WizardComponent {
     }
 
     function verifyMasterKey(key) {
-        return valid = bitcoin.verifyMasterKey(key.trim(), wizard_data['wallet_type'])
+        valid = false
+        validationtext.text = ''
+
+        if (!bitcoin.verifyMasterKey(key.trim(), wizard_data['wallet_type']))
+            return false
+
+        if (cosigner) {
+            apply()
+            if (wiz.hasDuplicateKeys(wizard_data)) {
+                validationtext.text = qsTr('Error: duplicate master public key')
+                return false
+            }
+        }
+
+        return valid = true
     }
 
     ColumnLayout {
@@ -76,8 +90,7 @@ WizardComponent {
 
         TextArea {
             id: validationtext
-            text: bitcoin.validationMessage
-            visible: bitcoin.validationMessage
+            visible: text
             Layout.fillWidth: true
             readOnly: true
             wrapMode: TextInput.WordWrap
@@ -108,6 +121,7 @@ WizardComponent {
 
     Bitcoin {
         id: bitcoin
+        onValidationMessageChanged: validationtext.text = validationMessage
     }
 
     Component.onCompleted: {

electrum/gui/qml/components/wizard/WCHaveSeed.qml

@@ -54,7 +54,22 @@ WizardComponent {
     }
 
     function checkValid() {
-        bitcoin.verifySeed(seedtext.text, seed_variant_cb.currentValue, wizard_data['wallet_type'])
+        valid = false
+        validationtext.text = ''
+
+        var validSeed = bitcoin.verifySeed(seedtext.text, seed_variant_cb.currentValue, wizard_data['wallet_type'])
+        if (!cosigner || !validSeed) {
+            valid = validSeed
+            return
+        } else {
+            apply()
+            if (wiz.hasDuplicateKeys(wizard_data)) {
+                validationtext.text = qsTr('Error: duplicate master public key')
+                return
+            } else {
+                valid = true
+            }
+        }
     }
 
     Flickable {
@@ -130,8 +145,7 @@ WizardComponent {
             }
             TextArea {
                 id: validationtext
-                text: bitcoin.validationMessage
-                visible: bitcoin.validationMessage
+                visible: text
                 Layout.fillWidth: true
                 readOnly: true
                 wrapMode: TextInput.WordWrap
@@ -151,6 +165,9 @@ WizardComponent {
                 Layout.fillWidth: true
                 Layout.columnSpan: 2
                 placeholderText: qsTr('Enter your custom word(s)')
+                onTextChanged: {
+                    validationTimer.restart()
+                }
             }
         }
     }
@@ -158,7 +175,7 @@ WizardComponent {
     Bitcoin {
         id: bitcoin
         onSeedTypeChanged: contentText.text = bitcoin.seed_type
-        onSeedValidChanged: root.valid = bitcoin.seed_valid
+        onValidationMessageChanged: validationtext.text = validationMessage
     }
 
     Timer {

electrum/gui/qml/components/wizard/WizardComponent.qml

@@ -7,7 +7,6 @@ Item {
     property var wizard_data : ({})
     property bool valid
     property bool last: false
-    property bool ready: false
     property string title: ''
 
     onAccept: {

electrum/gui/qml/qebitcoin.py

@@ -24,9 +24,6 @@ class QEBitcoin(QObject):
     generatedSeedChanged = pyqtSignal()
     generatedSeed = ''
 
-    seedValidChanged = pyqtSignal()
-    seedValid = False
-
     seedTypeChanged = pyqtSignal()
     seedType = ''
 
@@ -37,10 +34,6 @@ class QEBitcoin(QObject):
     def generated_seed(self):
         return self.generatedSeed
 
-    @pyqtProperty(bool, notify=seedValidChanged)
-    def seed_valid(self):
-        return self.seedValid
-
     @pyqtProperty('QString', notify=seedTypeChanged)
     def seed_type(self):
         return self.seedType
@@ -58,7 +51,7 @@ class QEBitcoin(QObject):
     @pyqtSlot()
     @pyqtSlot(str)
     @pyqtSlot(str,str)
-    def generate_seed(self, seed_type='segwit', language='en'):
+    def generateSeed(self, seed_type='segwit', language='en'):
         self._logger.debug('generating seed of type ' + str(seed_type))
 
         async def co_gen_seed(seed_type, language):
@@ -68,8 +61,7 @@ class QEBitcoin(QObject):
 
         asyncio.run_coroutine_threadsafe(co_gen_seed(seed_type, language), get_asyncio_loop())
 
-    @pyqtSlot(str,str)
-    @pyqtSlot(str,str,str)
+    @pyqtSlot(str,str,str, result=bool)
     def verifySeed(self, seed, seed_variant, wallet_type='standard'):
         seed_type = ''
         seed_valid = False
@@ -109,12 +101,10 @@ class QEBitcoin(QObject):
         self.seedType = seed_type
         self.seedTypeChanged.emit()
 
-        if self.seedValid != seed_valid:
-            self.seedValid = seed_valid
-            self.seedValidChanged.emit()
-
         self._logger.debug('seed verified: ' + str(seed_valid))
 
+        return seed_valid
+
     @pyqtSlot(str, str, result=bool)
     def verifyMasterKey(self, key, wallet_type='standard'):
         self.validationMessage = ''

electrum/gui/qml/qewizard.py

@@ -82,6 +82,12 @@ class QENewWalletWizard(NewWalletWizard, QEAbstractWizard):
     def is_single_password(self):
         return self._daemon.singlePasswordEnabled
 
+    @pyqtSlot('QJSValue', result=bool)
+    def hasDuplicateKeys(self, js_data):
+        self._logger.info('Checking for duplicate keys')
+        data = js_data.toVariant()
+        return self.has_duplicate_keys(data)
+
     @pyqtSlot('QJSValue', bool, str)
     def createStorage(self, js_data, single_password_enabled, single_password):
         self._logger.info('Creating wallet from wizard data')

electrum/wizard.py

@@ -149,7 +149,7 @@ class NewWalletWizard(AbstractWizard):
             },
             'confirm_seed': {
                 'next': lambda d: 'wallet_password' if not self.is_multisig(d) else 'multisig_show_masterpubkey',
-                'last': lambda v,d: self.is_single_password()
+                'last': lambda v,d: self.is_single_password() and not self.is_multisig(d)
             },
             'have_seed': {
                 'next': self.on_have_seed,
@@ -157,11 +157,11 @@ class NewWalletWizard(AbstractWizard):
             },
             'bip39_refine': {
                 'next': lambda d: 'wallet_password' if not self.is_multisig(d) else 'multisig_show_masterpubkey',
-                'last': lambda v,d: self.is_single_password()
+                'last': lambda v,d: self.is_single_password() and not self.is_multisig(d)
             },
             'have_master_key': {
                 'next': lambda d: 'wallet_password' if not self.is_multisig(d) else 'multisig_show_masterpubkey',
-                'last': lambda v,d: self.is_single_password()
+                'last': lambda v,d: self.is_single_password() and not self.is_multisig(d)
             },
             'multisig': {
                 'next': 'keystore_type'
@@ -261,12 +261,16 @@ class NewWalletWizard(AbstractWizard):
 
         return True
 
+    def has_duplicate_keys(self, wizard_data):
+        # TODO
+        return False
+
     def finished(self, wizard_data):
         self._logger.debug('finished')
         # override
 
     def create_storage(self, path, data):
-        # only standard and 2fa wallets for now
+        # only standard, 2fa and imported wallets for now
         assert data['wallet_type'] in ['standard', '2fa', 'imported']
 
         if os.path.exists(path):