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Encryption settings dialog, authorization as owner

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This commit is contained in:
Jakub Melka
2021-05-24 19:29:02 +02:00
parent 759d5c7793
commit 936fe2fbe7
9 changed files with 342 additions and 27 deletions
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116
Pdf4QtViewer/pdfencryptionsettingsdialog.cpp
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@ -18,18 +18,58 @@
#include "pdfencryptionsettingsdialog.h"
#include "ui_pdfencryptionsettingsdialog.h"
#include "pdfutils.h"
#include "pdfsecurityhandler.h"
namespace pdfviewer
{
PDFEncryptionSettingsDialog::PDFEncryptionSettingsDialog(QWidget* parent) :
QDialog(parent),
ui(new Ui::PDFEncryptionSettingsDialog)
ui(new Ui::PDFEncryptionSettingsDialog),
m_isUpdatingUi(false)
{
ui->setupUi(this);
ui->algorithmComboBox->addItem(tr("None"), int(pdf::PDFSecurityHandlerFactory::None));
ui->algorithmComboBox->addItem(tr("RC4 | R3"), int(pdf::PDFSecurityHandlerFactory::RC4));
ui->algorithmComboBox->addItem(tr("AES 128-bit | R4"), int(pdf::PDFSecurityHandlerFactory::AES_128));
ui->algorithmComboBox->addItem(tr("AES 256-bit | R6"), int(pdf::PDFSecurityHandlerFactory::AES_256));
ui->algorithmComboBox->setCurrentIndex(0);
ui->algorithmHintWidget->setFixedSize(ui->algorithmHintWidget->minimumSizeHint());
ui->userPasswordStrengthHintWidget->setFixedSize(ui->userPasswordStrengthHintWidget->minimumSizeHint());
ui->ownerPasswordStrengthHintWidget->setFixedSize(ui->ownerPasswordStrengthHintWidget->minimumSizeHint());
ui->algorithmHintWidget->setMinValue(1);
ui->algorithmHintWidget->setMaxValue(5);
const int passwordOptimalEntropy = pdf::PDFSecurityHandlerFactory::getPasswordOptimalEntropy();
ui->userPasswordStrengthHintWidget->setMinValue(0);
ui->userPasswordStrengthHintWidget->setMaxValue(passwordOptimalEntropy);
ui->ownerPasswordStrengthHintWidget->setMinValue(0);
ui->ownerPasswordStrengthHintWidget->setMaxValue(passwordOptimalEntropy);
connect(ui->algorithmComboBox, QOverload<int>::of(&QComboBox::currentIndexChanged), this, &PDFEncryptionSettingsDialog::updateUi);
connect(ui->userPasswordEnableCheckBox, &QCheckBox::clicked, this, &PDFEncryptionSettingsDialog::updateUi);
connect(ui->ownerPasswordEnableCheckBox, &QCheckBox::clicked, this, &PDFEncryptionSettingsDialog::updateUi);
connect(ui->userPasswordEdit, &QLineEdit::textChanged, this, &PDFEncryptionSettingsDialog::updatePasswordScore);
connect(ui->ownerPasswordEdit, &QLineEdit::textChanged, this, &PDFEncryptionSettingsDialog::updatePasswordScore);
m_checkBoxToPermission[ui->permPrintLowResolutionCheckBox] = pdf::PDFSecurityHandler::Permission::PrintLowResolution;
m_checkBoxToPermission[ui->permModifyDocumentContentsCheckBox] = pdf::PDFSecurityHandler::Permission::Modify;
m_checkBoxToPermission[ui->permCopyContentCheckBox] = pdf::PDFSecurityHandler::Permission::CopyContent;
m_checkBoxToPermission[ui->permInteractiveItemsCheckBox] = pdf::PDFSecurityHandler::Permission::ModifyInteractiveItems;
m_checkBoxToPermission[ui->permFillInteractiveFormsCheckBox] = pdf::PDFSecurityHandler::Permission::ModifyFormFields;
m_checkBoxToPermission[ui->permAccessibilityCheckBox] = pdf::PDFSecurityHandler::Permission::Accessibility;
m_checkBoxToPermission[ui->permAssembleCheckBox] = pdf::PDFSecurityHandler::Permission::Assemble;
m_checkBoxToPermission[ui->permPrintHighResolutionCheckBox] = pdf::PDFSecurityHandler::Permission::PrintHighResolution;
updateUi();
updatePasswordScore();
}
PDFEncryptionSettingsDialog::~PDFEncryptionSettingsDialog()
@ -37,4 +77,78 @@ PDFEncryptionSettingsDialog::~PDFEncryptionSettingsDialog()
delete ui;
}
void PDFEncryptionSettingsDialog::updateUi()
{
if (m_isUpdatingUi)
{
return;
}
pdf::PDFTemporaryValueChange guard(&m_isUpdatingUi, true);
const pdf::PDFSecurityHandlerFactory::Algorithm algorithm = static_cast<const pdf::PDFSecurityHandlerFactory::Algorithm>(ui->algorithmComboBox->currentData().toInt());
const bool encrypted = algorithm != pdf::PDFSecurityHandlerFactory::None;
switch (algorithm)
{
case pdf::PDFSecurityHandlerFactory::None:
ui->algorithmHintWidget->setCurrentValue(1);
break;
case pdf::PDFSecurityHandlerFactory::RC4:
ui->algorithmHintWidget->setCurrentValue(2);
break;
case pdf::PDFSecurityHandlerFactory::AES_128:
ui->algorithmHintWidget->setCurrentValue(4);
break;
case pdf::PDFSecurityHandlerFactory::AES_256:
ui->algorithmHintWidget->setCurrentValue(5);
break;
default:
Q_ASSERT(false);
break;
}
ui->userPasswordEnableCheckBox->setEnabled(encrypted);
ui->ownerPasswordEnableCheckBox->setEnabled(false);
if (!encrypted)
{
ui->userPasswordEnableCheckBox->setChecked(false);
ui->ownerPasswordEnableCheckBox->setChecked(false);
ui->userPasswordEdit->clear();
ui->ownerPasswordEdit->clear();
}
else
{
ui->ownerPasswordEnableCheckBox->setChecked(true);
}
ui->userPasswordEdit->setEnabled(ui->userPasswordEnableCheckBox->isChecked());
ui->ownerPasswordEdit->setEnabled(ui->ownerPasswordEnableCheckBox->isChecked());
ui->userPasswordStrengthHintWidget->setEnabled(ui->userPasswordEnableCheckBox->isChecked());
ui->ownerPasswordStrengthHintWidget->setEnabled(ui->ownerPasswordEnableCheckBox->isChecked());
ui->encryptAllRadioButton->setEnabled(encrypted);
ui->encryptAllExceptMetadataRadioButton->setEnabled(encrypted);
ui->encryptFileAttachmentsOnlyRadioButton->setEnabled(encrypted);
for (const auto& permissionItem : m_checkBoxToPermission)
{
permissionItem.first->setEnabled(encrypted);
}
}
void PDFEncryptionSettingsDialog::updatePasswordScore()
{
const pdf::PDFSecurityHandlerFactory::Algorithm algorithm = static_cast<const pdf::PDFSecurityHandlerFactory::Algorithm>(ui->algorithmComboBox->currentData().toInt());
const int userPasswordScore = pdf::PDFSecurityHandlerFactory::getPasswordEntropy(ui->userPasswordEdit->text(), algorithm);
const int ownerPasswordScore = pdf::PDFSecurityHandlerFactory::getPasswordEntropy(ui->ownerPasswordEdit->text(), algorithm);
ui->userPasswordStrengthHintWidget->setCurrentValue(userPasswordScore);
ui->ownerPasswordStrengthHintWidget->setCurrentValue(ownerPasswordScore);
}
} // namespace pdfviewer