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305 lines
10 KiB
305 lines
10 KiB
#!/usr/bin/env python |
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# |
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# Electrum - lightweight Bitcoin client |
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# Copyright (C) 2013 ecdsa@github |
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# |
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# Permission is hereby granted, free of charge, to any person |
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# obtaining a copy of this software and associated documentation files |
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# (the "Software"), to deal in the Software without restriction, |
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# including without limitation the rights to use, copy, modify, merge, |
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# publish, distribute, sublicense, and/or sell copies of the Software, |
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# and to permit persons to whom the Software is furnished to do so, |
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# subject to the following conditions: |
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# |
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# The above copyright notice and this permission notice shall be |
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# included in all copies or substantial portions of the Software. |
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# |
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
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# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
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# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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# SOFTWARE. |
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from PyQt5.QtCore import Qt |
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from PyQt5.QtGui import * |
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from PyQt5.QtWidgets import * |
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from electrum.i18n import _ |
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from .util import * |
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import re |
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import math |
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from electrum.plugins import run_hook |
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def check_password_strength(password): |
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''' |
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Check the strength of the password entered by the user and return back the same |
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:param password: password entered by user in New Password |
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:return: password strength Weak or Medium or Strong |
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''' |
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password = password |
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n = math.log(len(set(password))) |
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num = re.search("[0-9]", password) is not None and re.match("^[0-9]*$", password) is None |
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caps = password != password.upper() and password != password.lower() |
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extra = re.match("^[a-zA-Z0-9]*$", password) is None |
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score = len(password)*( n + caps + num + extra)/20 |
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password_strength = {0:"Weak",1:"Medium",2:"Strong",3:"Very Strong"} |
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return password_strength[min(3, int(score))] |
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PW_NEW, PW_CHANGE, PW_PASSPHRASE = range(0, 3) |
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class PasswordLayout(object): |
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titles = [_("Enter Password"), _("Change Password"), _("Enter Passphrase")] |
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def __init__(self, wallet, msg, kind, OK_button, force_disable_encrypt_cb=False): |
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self.wallet = wallet |
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self.pw = QLineEdit() |
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self.pw.setEchoMode(2) |
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self.new_pw = QLineEdit() |
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self.new_pw.setEchoMode(2) |
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self.conf_pw = QLineEdit() |
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self.conf_pw.setEchoMode(2) |
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self.kind = kind |
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self.OK_button = OK_button |
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vbox = QVBoxLayout() |
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label = QLabel(msg + "\n") |
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label.setWordWrap(True) |
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grid = QGridLayout() |
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grid.setSpacing(8) |
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grid.setColumnMinimumWidth(0, 150) |
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grid.setColumnMinimumWidth(1, 100) |
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grid.setColumnStretch(1,1) |
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if kind == PW_PASSPHRASE: |
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vbox.addWidget(label) |
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msgs = [_('Passphrase:'), _('Confirm Passphrase:')] |
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else: |
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logo_grid = QGridLayout() |
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logo_grid.setSpacing(8) |
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logo_grid.setColumnMinimumWidth(0, 70) |
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logo_grid.setColumnStretch(1,1) |
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logo = QLabel() |
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logo.setAlignment(Qt.AlignCenter) |
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logo_grid.addWidget(logo, 0, 0) |
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logo_grid.addWidget(label, 0, 1, 1, 2) |
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vbox.addLayout(logo_grid) |
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m1 = _('New Password:') if kind == PW_CHANGE else _('Password:') |
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msgs = [m1, _('Confirm Password:')] |
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if wallet and wallet.has_password(): |
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grid.addWidget(QLabel(_('Current Password:')), 0, 0) |
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grid.addWidget(self.pw, 0, 1) |
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lockfile = ":icons/lock.png" |
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else: |
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lockfile = ":icons/unlock.png" |
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logo.setPixmap(QPixmap(lockfile).scaledToWidth(36)) |
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grid.addWidget(QLabel(msgs[0]), 1, 0) |
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grid.addWidget(self.new_pw, 1, 1) |
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grid.addWidget(QLabel(msgs[1]), 2, 0) |
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grid.addWidget(self.conf_pw, 2, 1) |
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vbox.addLayout(grid) |
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# Password Strength Label |
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if kind != PW_PASSPHRASE: |
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self.pw_strength = QLabel() |
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grid.addWidget(self.pw_strength, 3, 0, 1, 2) |
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self.new_pw.textChanged.connect(self.pw_changed) |
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self.encrypt_cb = QCheckBox(_('Encrypt wallet file')) |
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self.encrypt_cb.setEnabled(False) |
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grid.addWidget(self.encrypt_cb, 4, 0, 1, 2) |
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self.encrypt_cb.setVisible(kind != PW_PASSPHRASE) |
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def enable_OK(): |
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ok = self.new_pw.text() == self.conf_pw.text() |
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OK_button.setEnabled(ok) |
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self.encrypt_cb.setEnabled(ok and bool(self.new_pw.text()) |
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and not force_disable_encrypt_cb) |
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self.new_pw.textChanged.connect(enable_OK) |
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self.conf_pw.textChanged.connect(enable_OK) |
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self.vbox = vbox |
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def title(self): |
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return self.titles[self.kind] |
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def layout(self): |
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return self.vbox |
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def pw_changed(self): |
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password = self.new_pw.text() |
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if password: |
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colors = {"Weak":"Red", "Medium":"Blue", "Strong":"Green", |
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"Very Strong":"Green"} |
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strength = check_password_strength(password) |
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label = (_("Password Strength") + ": " + "<font color=" |
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+ colors[strength] + ">" + strength + "</font>") |
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else: |
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label = "" |
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self.pw_strength.setText(label) |
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def old_password(self): |
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if self.kind == PW_CHANGE: |
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return self.pw.text() or None |
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return None |
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def new_password(self): |
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pw = self.new_pw.text() |
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# Empty passphrases are fine and returned empty. |
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if pw == "" and self.kind != PW_PASSPHRASE: |
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pw = None |
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return pw |
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class PasswordLayoutForHW(object): |
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def __init__(self, wallet, msg, kind, OK_button): |
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self.wallet = wallet |
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self.kind = kind |
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self.OK_button = OK_button |
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vbox = QVBoxLayout() |
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label = QLabel(msg + "\n") |
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label.setWordWrap(True) |
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grid = QGridLayout() |
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grid.setSpacing(8) |
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grid.setColumnMinimumWidth(0, 150) |
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grid.setColumnMinimumWidth(1, 100) |
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grid.setColumnStretch(1,1) |
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logo_grid = QGridLayout() |
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logo_grid.setSpacing(8) |
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logo_grid.setColumnMinimumWidth(0, 70) |
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logo_grid.setColumnStretch(1,1) |
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logo = QLabel() |
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logo.setAlignment(Qt.AlignCenter) |
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logo_grid.addWidget(logo, 0, 0) |
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logo_grid.addWidget(label, 0, 1, 1, 2) |
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vbox.addLayout(logo_grid) |
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if wallet and wallet.has_storage_encryption(): |
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lockfile = ":icons/lock.png" |
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else: |
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lockfile = ":icons/unlock.png" |
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logo.setPixmap(QPixmap(lockfile).scaledToWidth(36)) |
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vbox.addLayout(grid) |
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self.encrypt_cb = QCheckBox(_('Encrypt wallet file')) |
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grid.addWidget(self.encrypt_cb, 1, 0, 1, 2) |
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self.vbox = vbox |
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def title(self): |
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return _("Toggle Encryption") |
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def layout(self): |
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return self.vbox |
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class ChangePasswordDialogBase(WindowModalDialog): |
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def __init__(self, parent, wallet): |
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WindowModalDialog.__init__(self, parent) |
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is_encrypted = wallet.has_storage_encryption() |
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OK_button = OkButton(self) |
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self.create_password_layout(wallet, is_encrypted, OK_button) |
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self.setWindowTitle(self.playout.title()) |
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vbox = QVBoxLayout(self) |
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vbox.addLayout(self.playout.layout()) |
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vbox.addStretch(1) |
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vbox.addLayout(Buttons(CancelButton(self), OK_button)) |
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self.playout.encrypt_cb.setChecked(is_encrypted) |
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def create_password_layout(self, wallet, is_encrypted, OK_button): |
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raise NotImplementedError() |
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class ChangePasswordDialogForSW(ChangePasswordDialogBase): |
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def __init__(self, parent, wallet): |
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ChangePasswordDialogBase.__init__(self, parent, wallet) |
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if not wallet.has_password(): |
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self.playout.encrypt_cb.setChecked(True) |
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def create_password_layout(self, wallet, is_encrypted, OK_button): |
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if not wallet.has_password(): |
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msg = _('Your wallet is not protected.') |
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msg += ' ' + _('Use this dialog to add a password to your wallet.') |
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else: |
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if not is_encrypted: |
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msg = _('Your bitcoins are password protected. However, your wallet file is not encrypted.') |
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else: |
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msg = _('Your wallet is password protected and encrypted.') |
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msg += ' ' + _('Use this dialog to change your password.') |
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self.playout = PasswordLayout( |
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wallet, msg, PW_CHANGE, OK_button, |
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force_disable_encrypt_cb=not wallet.can_have_keystore_encryption()) |
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def run(self): |
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if not self.exec_(): |
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return False, None, None, None |
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return True, self.playout.old_password(), self.playout.new_password(), self.playout.encrypt_cb.isChecked() |
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class ChangePasswordDialogForHW(ChangePasswordDialogBase): |
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def __init__(self, parent, wallet): |
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ChangePasswordDialogBase.__init__(self, parent, wallet) |
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def create_password_layout(self, wallet, is_encrypted, OK_button): |
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if not is_encrypted: |
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msg = _('Your wallet file is NOT encrypted.') |
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else: |
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msg = _('Your wallet file is encrypted.') |
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msg += '\n' + _('Note: If you enable this setting, you will need your hardware device to open your wallet.') |
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msg += '\n' + _('Use this dialog to toggle encryption.') |
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self.playout = PasswordLayoutForHW(wallet, msg, PW_CHANGE, OK_button) |
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def run(self): |
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if not self.exec_(): |
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return False, None |
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return True, self.playout.encrypt_cb.isChecked() |
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class PasswordDialog(WindowModalDialog): |
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def __init__(self, parent=None, msg=None): |
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msg = msg or _('Please enter your password') |
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WindowModalDialog.__init__(self, parent, _("Enter Password")) |
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self.pw = pw = QLineEdit() |
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pw.setEchoMode(2) |
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vbox = QVBoxLayout() |
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vbox.addWidget(QLabel(msg)) |
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grid = QGridLayout() |
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grid.setSpacing(8) |
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grid.addWidget(QLabel(_('Password')), 1, 0) |
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grid.addWidget(pw, 1, 1) |
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vbox.addLayout(grid) |
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vbox.addLayout(Buttons(CancelButton(self), OkButton(self))) |
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self.setLayout(vbox) |
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run_hook('password_dialog', pw, grid, 1) |
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def run(self): |
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if not self.exec_(): |
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return |
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return self.pw.text()
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