qml: implement initial wallet from master key

electrum/gui/qml/components/NewWalletWizard.qml

@@ -47,8 +47,12 @@ Wizard {
             if (wizard_data['seed_type'] != 'bip39' && Daemon.singlePassword)
                 page.last = true
             break
-//        case 'masterkey'
+        case 'masterkey':
-//        case 'hardware'
+            page = _loadNextComponent(components.havemasterkey, wizard_data)
+            page.next.connect(function() {havemasterkeyDone()})
+            if (Daemon.singlePassword)
+                page.last = true
+            break
         }
     }
 
@@ -87,6 +91,12 @@ Wizard {
         page.last = true
     }
 
+    function havemasterkeyDone(d) {
+        console.log('have master key done')
+        var page = _loadNextComponent(components.walletpassword, wizard_data)
+        page.last = true
+    }
+
     Item {
         id: components
         property Component walletname: Component {
@@ -117,6 +127,10 @@ Wizard {
             WCBIP39Refine {}
         }
 
+        property Component havemasterkey: Component {
+            WCHaveMasterKey {}
+        }
+
         property Component walletpassword: Component {
             WCWalletPassword {}
         }

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

@@ -0,0 +1,86 @@
+import QtQuick 2.6
+import QtQuick.Layouts 1.0
+import QtQuick.Controls 2.1
+
+import org.electrum 1.0
+
+import "../controls"
+
+WizardComponent {
+    id: root
+
+    valid: false
+
+    onAccept: {
+        wizard_data['master_key'] = masterkey_ta.text
+    }
+
+    function verifyMasterKey(key) {
+        return valid = bitcoin.verify_master_key(key)
+    }
+
+    ColumnLayout {
+        width: parent.width
+
+        Label { text: qsTr('Create keystore from a master key') }
+
+        RowLayout {
+            TextArea {
+                id: masterkey_ta
+                Layout.fillWidth: true
+                Layout.minimumHeight: 80
+                focus: true
+                wrapMode: TextEdit.WrapAnywhere
+                onTextChanged: verifyMasterKey(text)
+            }
+            ColumnLayout {
+                ToolButton {
+                    icon.source: '../../../icons/paste.png'
+                    icon.height: constants.iconSizeMedium
+                    icon.width: constants.iconSizeMedium
+                    onClicked: {
+                        if (verifyMasterKey(AppController.clipboardToText()))
+                            masterkey_ta.text = AppController.clipboardToText()
+                    }
+                }
+                ToolButton {
+                    icon.source: '../../../icons/qrcode.png'
+                    icon.height: constants.iconSizeMedium
+                    icon.width: constants.iconSizeMedium
+                    scale: 1.2
+                    onClicked: {
+                        var scan = qrscan.createObject(root)
+                        scan.onFound.connect(function() {
+                            if (verifyMasterKey(scan.scanData))
+                                masterkey_ta.text = scan.scanData
+                            scan.destroy()
+                        })
+                    }
+                }
+            }
+        }
+    }
+
+    Component {
+        id: qrscan
+        QRScan {
+            width: root.width
+            height: root.height
+
+            ToolButton {
+                icon.source: '../../../icons/closebutton.png'
+                icon.height: constants.iconSizeMedium
+                icon.width: constants.iconSizeMedium
+                anchors.right: parent.right
+                anchors.top: parent.top
+                onClicked: {
+                    parent.destroy()
+                }
+            }
+        }
+    }
+
+    Bitcoin {
+        id: bitcoin
+    }
+}

electrum/gui/qml/components/wizard/WCKeystoreType.qml

@@ -27,13 +27,13 @@ WizardComponent {
             text: qsTr('I already have a seed')
         }
         RadioButton {
-            enabled: false
             ButtonGroup.group: keystoregroup
             property string keystoretype: 'masterkey'
             text: qsTr('Use a master key')
         }
         RadioButton {
             enabled: false
+            visible: false
             ButtonGroup.group: keystoregroup
             property string keystoretype: 'hardware'
             text: qsTr('Use a hardware device')

electrum/gui/qml/qebitcoin.py

@@ -3,8 +3,9 @@ import asyncio
 from PyQt5.QtCore import pyqtProperty, pyqtSignal, pyqtSlot, QObject
 
 from electrum import mnemonic
-from electrum.bip32 import is_bip32_derivation
+from electrum import keystore
-from electrum.keystore import bip39_is_checksum_valid
+from electrum.i18n import _
+from electrum.bip32 import is_bip32_derivation, xpub_type
 from electrum.logging import get_logger
 from electrum.slip39 import decode_mnemonic, Slip39Error
 from electrum.util import parse_URI, create_bip21_uri, InvalidBitcoinURI, get_asyncio_loop
@@ -46,6 +47,12 @@ class QEBitcoin(QObject):
     def validation_message(self):
         return self.validationMessage
 
+    @validation_message.setter
+    def validation_message(self, msg):
+        if self.validationMessage != msg:
+            self.validationMessage = msg
+            self.validationMessageChanged.emit()
+
     @pyqtSlot()
     @pyqtSlot(str)
     @pyqtSlot(str,str)
@@ -68,16 +75,16 @@ class QEBitcoin(QObject):
 
         seed_type = ''
         seed_valid = False
-        validation_message = ''
+        self.validationMessage = ''
 
         if not (bip39 or slip39):
             seed_type = mnemonic.seed_type(seed)
             if seed_type != '':
                 seed_valid = True
         elif bip39:
-            is_checksum, is_wordlist = bip39_is_checksum_valid(seed)
+            is_checksum, is_wordlist = keystore.bip39_is_checksum_valid(seed)
             status = ('checksum: ' + ('ok' if is_checksum else 'failed')) if is_wordlist else 'unknown wordlist'
-            validation_message = 'BIP39 (%s)' % status
+            self.validationMessage = 'BIP39 (%s)' % status
 
             if is_checksum:
                 seed_type = 'bip39'
@@ -87,9 +94,9 @@ class QEBitcoin(QObject):
             try:
                 share = decode_mnemonic(seed)
                 seed_type = 'slip39'
-                validation_message = 'SLIP39: share #%d in %dof%d scheme' % (share.group_index, share.group_threshold, share.group_count)
+                self.validationMessage = 'SLIP39: share #%d in %dof%d scheme' % (share.group_index, share.group_threshold, share.group_count)
             except Slip39Error as e:
-                validation_message = 'SLIP39: %s' % str(e)
+                self.validationMessage = 'SLIP39: %s' % str(e)
             seed_valid = False # for now
 
         # cosigning seed
@@ -100,16 +107,32 @@ class QEBitcoin(QObject):
         self.seedType = seed_type
         self.seedTypeChanged.emit()
 
-        if self.validationMessage != validation_message:
-            self.validationMessage = validation_message
-            self.validationMessageChanged.emit()
-
         if self.seedValid != seed_valid:
             self.seedValid = seed_valid
             self.seedValidChanged.emit()
 
         self._logger.debug('seed verified: ' + str(seed_valid))
 
+    @pyqtSlot(str, result=bool)
+    @pyqtSlot(str, str, result=bool)
+    def verify_master_key(self, key, wallet_type='standard'):
+        self.validationMessage = ''
+        if not keystore.is_master_key(key):
+            self.validationMessage = _('Not a master key')
+            return False
+
+        if wallet_type == 'standard':
+            # validation message?
+            k = keystore.from_master_key(key)
+            has_xpub = isinstance(k, keystore.Xpub)
+            assert has_xpub
+            t1 = xpub_type(k.xpub)
+            if t1 not in ['standard', 'p2wpkh', 'p2wpkh-p2sh']:
+                self.validationMessage = '%s: %s' % (_('Wrong key type'), t1)
+                return False
+            return True
+        return False
+
     @pyqtSlot(str, result=bool)
     def verify_derivation_path(self, path):
         return is_bip32_derivation(path)

electrum/gui/qml/qewalletdb.py

@@ -5,7 +5,7 @@ from PyQt5.QtCore import pyqtProperty, pyqtSignal, pyqtSlot, QObject
 from electrum.logging import get_logger
 from electrum.storage import WalletStorage, StorageEncryptionVersion
 from electrum.wallet_db import WalletDB
-from electrum.bip32 import normalize_bip32_derivation
+from electrum.bip32 import normalize_bip32_derivation, xpub_type
 from electrum.util import InvalidPassword
 from electrum import keystore
 
@@ -178,6 +178,8 @@ class QEWalletDB(QObject):
         data = js_data.toVariant()
         self._logger.debug(str(data))
 
+        assert data['wallet_type'] == 'standard' # only standard wallets for now
+
         if single_password_enabled and single_password:
             data['encrypt'] = True
             data['password'] = single_password
@@ -188,6 +190,7 @@ class QEWalletDB(QObject):
                 raise Exception('file already exists at path')
             storage = WalletStorage(path)
 
+            if data['keystore_type'] in ['createseed', 'haveseed']:
                 if data['seed_type'] in ['old', 'standard', 'segwit']: #2fa, 2fa-segwit
                     self._logger.debug('creating keystore from electrum seed')
                     k = keystore.from_seed(data['seed'], data['seed_extra_words'], data['wallet_type'] == 'multisig')
@@ -199,6 +202,15 @@ class QEWalletDB(QObject):
                     k = keystore.from_bip43_rootseed(root_seed, derivation, xtype=script)
                 else:
                     raise Exception('unsupported/unknown seed_type %s' % data['seed_type'])
+            elif data['keystore_type'] == 'masterkey':
+                k = keystore.from_master_key(data['master_key'])
+                has_xpub = isinstance(k, keystore.Xpub)
+                assert has_xpub
+                t1 = xpub_type(k.xpub)
+                if t1 not in ['standard', 'p2wpkh', 'p2wpkh-p2sh']:
+                    raise Exception('wrong key type %s' % t1)
+            else:
+                raise Exception('unsupported/unknown keystore_type %s' % data['keystore_type'])
 
             if data['encrypt']:
                 if k.may_have_password():
@@ -209,6 +221,7 @@ class QEWalletDB(QObject):
             db.set_keystore_encryption(bool(data['password']) and data['encrypt'])
 
             db.put('wallet_type', data['wallet_type'])
+            if 'seed_type' in data:
                 db.put('seed_type', data['seed_type'])
             db.put('keystore', k.dump())
             if k.can_have_deterministic_lightning_xprv():
@@ -223,5 +236,5 @@ class QEWalletDB(QObject):
 
             self.createSuccess.emit()
         except Exception as e:
-            self._logger.error(str(e))
+            self._logger.error(repr(e))
             self.createError.emit(str(e))