1 #include "askpassphrasedialog.h"
2 #include "ui_askpassphrasedialog.h"
4 #include "guiconstants.h"
5 #include "walletmodel.h"
11 AskPassphraseDialog::AskPassphraseDialog(Mode mode, QWidget *parent) :
13 ui(new Ui::AskPassphraseDialog),
19 ui->passEdit1->setMaxLength(MAX_PASSPHRASE_SIZE);
20 ui->passEdit2->setMaxLength(MAX_PASSPHRASE_SIZE);
21 ui->passEdit3->setMaxLength(MAX_PASSPHRASE_SIZE);
23 // Setup Caps Lock detection.
24 ui->passEdit1->installEventFilter(this);
25 ui->passEdit2->installEventFilter(this);
26 ui->passEdit3->installEventFilter(this);
27 ui->capsLabel->clear();
31 case Encrypt: // Ask passphrase x2
32 ui->passLabel1->hide();
33 ui->passEdit1->hide();
34 ui->warningLabel->setText(tr("Enter the new passphrase to the wallet.<br/>Please use a passphrase of <b>10 or more random characters</b>, or <b>eight or more words</b>."));
35 setWindowTitle(tr("Encrypt wallet"));
37 case Unlock: // Ask passphrase
38 ui->warningLabel->setText(tr("This operation needs your wallet passphrase to unlock the wallet."));
39 ui->passLabel2->hide();
40 ui->passEdit2->hide();
41 ui->passLabel3->hide();
42 ui->passEdit3->hide();
43 setWindowTitle(tr("Unlock wallet"));
45 case Decrypt: // Ask passphrase
46 ui->warningLabel->setText(tr("This operation needs your wallet passphrase to decrypt the wallet."));
47 ui->passLabel2->hide();
48 ui->passEdit2->hide();
49 ui->passLabel3->hide();
50 ui->passEdit3->hide();
51 setWindowTitle(tr("Decrypt wallet"));
53 case ChangePass: // Ask old passphrase + new passphrase x2
54 setWindowTitle(tr("Change passphrase"));
55 ui->warningLabel->setText(tr("Enter the old and new passphrase to the wallet."));
58 resize(minimumSize()); // Get rid of extra space in dialog
61 connect(ui->passEdit1, SIGNAL(textChanged(QString)), this, SLOT(textChanged()));
62 connect(ui->passEdit2, SIGNAL(textChanged(QString)), this, SLOT(textChanged()));
63 connect(ui->passEdit3, SIGNAL(textChanged(QString)), this, SLOT(textChanged()));
66 AskPassphraseDialog::~AskPassphraseDialog()
68 // Attempt to overwrite text so that they do not linger around in memory
69 ui->passEdit1->setText(QString(" ").repeated(ui->passEdit1->text().size()));
70 ui->passEdit2->setText(QString(" ").repeated(ui->passEdit2->text().size()));
71 ui->passEdit3->setText(QString(" ").repeated(ui->passEdit3->text().size()));
75 void AskPassphraseDialog::setModel(WalletModel *model)
80 void AskPassphraseDialog::accept()
82 std::string oldpass, newpass1, newpass2;
83 // TODO: mlock memory / munlock on return so they will not be swapped out, really need "mlockedstring" wrapper class to do this safely
84 oldpass.reserve(MAX_PASSPHRASE_SIZE);
85 newpass1.reserve(MAX_PASSPHRASE_SIZE);
86 newpass2.reserve(MAX_PASSPHRASE_SIZE);
87 oldpass.assign(ui->passEdit1->text().toStdString());
88 newpass1.assign(ui->passEdit2->text().toStdString());
89 newpass2.assign(ui->passEdit3->text().toStdString());
94 if(newpass1.empty() || newpass2.empty())
96 // Cannot encrypt with empty passphrase
99 QMessageBox::StandardButton retval = QMessageBox::question(this, tr("Confirm wallet encryption"),
100 tr("WARNING: If you encrypt your wallet and lose your passphrase, you will <b>LOSE ALL OF YOUR BITCOINS</b>!\nAre you sure you wish to encrypt your wallet?"),
101 QMessageBox::Yes|QMessageBox::Cancel,
102 QMessageBox::Cancel);
103 if(retval == QMessageBox::Yes)
105 if(newpass1 == newpass2)
107 if(model->setWalletEncrypted(true, newpass1))
109 QMessageBox::warning(this, tr("Wallet encrypted"),
110 tr("Remember that encrypting your wallet cannot fully protect your bitcoins from being stolen by malware infecting your computer."));
114 QMessageBox::critical(this, tr("Wallet encryption failed"),
115 tr("Wallet encryption failed due to an internal error. Your wallet was not encrypted."));
117 QDialog::accept(); // Success
121 QMessageBox::critical(this, tr("Wallet encryption failed"),
122 tr("The supplied passphrases do not match."));
127 QDialog::reject(); // Cancelled
131 if(!model->setWalletLocked(false, oldpass))
133 QMessageBox::critical(this, tr("Wallet unlock failed"),
134 tr("The passphrase entered for the wallet decryption was incorrect."));
138 QDialog::accept(); // Success
142 if(!model->setWalletEncrypted(false, oldpass))
144 QMessageBox::critical(this, tr("Wallet decryption failed"),
145 tr("The passphrase entered for the wallet decryption was incorrect."));
149 QDialog::accept(); // Success
153 if(newpass1 == newpass2)
155 if(model->changePassphrase(oldpass, newpass1))
157 QMessageBox::information(this, tr("Wallet encrypted"),
158 tr("Wallet passphrase was succesfully changed."));
159 QDialog::accept(); // Success
163 QMessageBox::critical(this, tr("Wallet encryption failed"),
164 tr("The passphrase entered for the wallet decryption was incorrect."));
169 QMessageBox::critical(this, tr("Wallet encryption failed"),
170 tr("The supplied passphrases do not match."));
176 void AskPassphraseDialog::textChanged()
178 // Validate input, set Ok button to enabled when accepable
179 bool acceptable = false;
182 case Encrypt: // New passphrase x2
183 acceptable = !ui->passEdit2->text().isEmpty() && !ui->passEdit3->text().isEmpty();
185 case Unlock: // Old passphrase x1
187 acceptable = !ui->passEdit1->text().isEmpty();
189 case ChangePass: // Old passphrase x1, new passphrase x2
190 acceptable = !ui->passEdit1->text().isEmpty() && !ui->passEdit2->text().isEmpty() && !ui->passEdit3->text().isEmpty();
193 ui->buttonBox->button(QDialogButtonBox::Ok)->setEnabled(acceptable);
196 bool AskPassphraseDialog::event(QEvent *event)
198 // Detect Caps Lock key press.
199 if (event->type() == QEvent::KeyPress) {
200 QKeyEvent *ke = static_cast<QKeyEvent *>(event);
201 if (ke->key() == Qt::Key_CapsLock) {
202 fCapsLock = !fCapsLock;
205 ui->capsLabel->setText(tr("Warning: The Caps Lock key is on."));
207 ui->capsLabel->clear();
210 return QWidget::event(event);
213 bool AskPassphraseDialog::eventFilter(QObject *, QEvent *event)
216 * There is no good OS-independent way to check a key state in Qt, but we
217 * can detect Caps Lock by checking for the following condition:
218 * Shift key is down and the result is a lower case character, or
219 * Shift key is not down and the result is an upper case character.
221 if (event->type() == QEvent::KeyPress) {
222 QKeyEvent *ke = static_cast<QKeyEvent *>(event);
223 QString str = ke->text();
224 if (str.length() != 0) {
225 const QChar *psz = str.unicode();
226 bool fShift = (ke->modifiers() & Qt::ShiftModifier) != 0;
227 if ((fShift && psz->isLower()) || (!fShift && psz->isUpper())) {
229 ui->capsLabel->setText(tr("Warning: The Caps Lock key is on."));
230 } else if (psz->isLetter()) {
232 ui->capsLabel->clear();