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/*
* Copyright (C) by Daniel Molkentin <danimo@owncloud.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#include "sslbutton.h"
#include "account.h"
#include "accountstate.h"
#include "theme.h"
#include <QMenu>
#include <QUrl>
#include <QtNetwork>
#include <QSslConfiguration>
#include <QWidgetAction>
#include <QLabel>
namespace OCC {
Q_LOGGING_CATEGORY(lcSsl, "nextcloud.gui.ssl", QtInfoMsg)
SslButton::SslButton(QWidget *parent)
: QToolButton(parent)
{
setPopupMode(QToolButton::InstantPopup);
setAutoRaise(true);
_menu = new QMenu(this);
QObject::connect(_menu, &QMenu::aboutToShow,
this, &SslButton::slotUpdateMenu);
setMenu(_menu);
}
static QString addCertDetailsField(const QString &key, const QString &value)
{
if (value.isEmpty())
return QString();
return QLatin1String("<tr><td style=\"vertical-align: top;\"><b>") + key
+ QLatin1String("</b></td><td style=\"vertical-align: bottom;\">") + value
+ QLatin1String("</td></tr>");
}
// necessary indication only, not sufficient for primary validation!
static bool isSelfSigned(const QSslCertificate &certificate)
{
return certificate.issuerInfo(QSslCertificate::CommonName) == certificate.subjectInfo(QSslCertificate::CommonName)
&& certificate.issuerInfo(QSslCertificate::OrganizationalUnitName) == certificate.subjectInfo(QSslCertificate::OrganizationalUnitName);
}
QMenu *SslButton::buildCertMenu(QMenu *parent, const QSslCertificate &cert,
const QList<QSslCertificate> &userApproved, int pos, const QList<QSslCertificate> &systemCaCertificates)
{
QString cn = QStringList(cert.subjectInfo(QSslCertificate::CommonName)).join(QChar(';'));
QString ou = QStringList(cert.subjectInfo(QSslCertificate::OrganizationalUnitName)).join(QChar(';'));
QString org = QStringList(cert.subjectInfo(QSslCertificate::Organization)).join(QChar(';'));
QString country = QStringList(cert.subjectInfo(QSslCertificate::CountryName)).join(QChar(';'));
QString state = QStringList(cert.subjectInfo(QSslCertificate::StateOrProvinceName)).join(QChar(';'));
QString issuer = QStringList(cert.issuerInfo(QSslCertificate::CommonName)).join(QChar(';'));
if (issuer.isEmpty())
issuer = QStringList(cert.issuerInfo(QSslCertificate::OrganizationalUnitName)).join(QChar(';'));
QString sha1 = Utility::formatFingerprint(cert.digest(QCryptographicHash::Sha1).toHex(), false);
QByteArray sha265hash = cert.digest(QCryptographicHash::Sha256).toHex();
QString sha256escaped =
Utility::escape(Utility::formatFingerprint(sha265hash.left(sha265hash.length() / 2), false))
+ QLatin1String("<br/>")
+ Utility::escape(Utility::formatFingerprint(sha265hash.mid(sha265hash.length() / 2), false));
QString serial = QString::fromUtf8(cert.serialNumber());
QString effectiveDate = cert.effectiveDate().date().toString();
QString expiryDate = cert.expiryDate().date().toString();
QString sna = QStringList(cert.subjectAlternativeNames().values()).join(" ");
QString details;
QTextStream stream(&details);
stream << QLatin1String("<html><body>");
stream << tr("<h3>Certificate Details</h3>");
stream << QLatin1String("<table>");
stream << addCertDetailsField(tr("Common Name (CN):"), Utility::escape(cn));
stream << addCertDetailsField(tr("Subject Alternative Names:"), Utility::escape(sna).replace(" ", "<br/>"));
stream << addCertDetailsField(tr("Organization (O):"), Utility::escape(org));
stream << addCertDetailsField(tr("Organizational Unit (OU):"), Utility::escape(ou));
stream << addCertDetailsField(tr("State/Province:"), Utility::escape(state));
stream << addCertDetailsField(tr("Country:"), Utility::escape(country));
stream << addCertDetailsField(tr("Serial:"), Utility::escape(serial));
stream << QLatin1String("</table>");
stream << tr("<h3>Issuer</h3>");
stream << QLatin1String("<table>");
stream << addCertDetailsField(tr("Issuer:"), Utility::escape(issuer));
stream << addCertDetailsField(tr("Issued on:"), Utility::escape(effectiveDate));
stream << addCertDetailsField(tr("Expires on:"), Utility::escape(expiryDate));
stream << QLatin1String("</table>");
stream << tr("<h3>Fingerprints</h3>");
stream << QLatin1String("<table>");
stream << addCertDetailsField(tr("SHA-256:"), sha256escaped);
stream << addCertDetailsField(tr("SHA-1:"), Utility::escape(sha1));
stream << QLatin1String("</table>");
if (userApproved.contains(cert)) {
stream << tr("<p><b>Note:</b> This certificate was manually approved</p>");
}
stream << QLatin1String("</body></html>");
QString txt;
if (pos > 0) {
txt += QString(2 * pos, ' ');
if (!Utility::isWindows()) {
// doesn't seem to work reliably on Windows
txt += QChar(0x21AA); // nicer '->' symbol
txt += QChar(' ');
}
}
QString certId = cn.isEmpty() ? ou : cn;
if (systemCaCertificates.contains(cert)) {
txt += certId;
} else {
if (isSelfSigned(cert)) {
txt += tr("%1 (self-signed)").arg(certId);
} else {
txt += tr("%1").arg(certId);
}
}
// create label first
auto *label = new QLabel(parent);
label->setStyleSheet(QLatin1String("QLabel { padding: 8px; }"));
label->setTextFormat(Qt::RichText);
label->setText(details);
// plug label into widget action
auto *action = new QWidgetAction(parent);
action->setDefaultWidget(label);
// plug action into menu
auto *menu = new QMenu(parent);
menu->menuAction()->setText(txt);
menu->addAction(action);
return menu;
}
void SslButton::updateAccountState(AccountState *accountState)
{
if (!accountState || !accountState->isConnected()) {
setVisible(false);
return;
} else {
setVisible(true);
}
_accountState = accountState;
AccountPtr account = _accountState->account();
if (account->url().scheme() == QLatin1String("https")) {
setIcon(QIcon(QLatin1String(":/client/theme/lock-https.svg")));
QSslCipher cipher = account->_sessionCipher;
setToolTip(tr("This connection is encrypted using %1 bit %2.\n").arg(cipher.usedBits()).arg(cipher.name()));
} else {
setIcon(QIcon(QLatin1String(":/client/theme/lock-http.svg")));
setToolTip(tr("This connection is NOT secure as it is not encrypted.\n"));
}
}
void SslButton::slotUpdateMenu()
{
_menu->clear();
if (!_accountState) {
return;
}
AccountPtr account = _accountState->account();
_menu->addAction(tr("Server version: %1").arg(account->serverVersion()))->setEnabled(false);
if (account->isHttp2Supported()) {
_menu->addAction("HTTP/2")->setEnabled(false);
}
if (account->url().scheme() == QLatin1String("https")) {
QString sslVersion = account->_sessionCipher.protocolString()
+ ", " + account->_sessionCipher.authenticationMethod()
+ ", " + account->_sessionCipher.keyExchangeMethod()
+ ", " + account->_sessionCipher.encryptionMethod();
_menu->addAction(sslVersion)->setEnabled(false);
if (account->_sessionTicket.isEmpty()) {
_menu->addAction(tr("No support for SSL session tickets/identifiers"))->setEnabled(false);
}
QList<QSslCertificate> chain = account->_peerCertificateChain;
if (chain.isEmpty()) {
qCWarning(lcSsl) << "Empty certificate chain";
return;
}
_menu->addAction(tr("Certificate information:"))->setEnabled(false);
const auto systemCerts = QSslConfiguration::systemCaCertificates();
QList<QSslCertificate> tmpChain;
foreach (QSslCertificate cert, chain) {
tmpChain << cert;
if (systemCerts.contains(cert))
break;
}
chain = tmpChain;
// find trust anchor (informational only, verification is done by QSslSocket!)
for (const QSslCertificate &rootCA : systemCerts) {
if (rootCA.issuerInfo(QSslCertificate::CommonName) == chain.last().issuerInfo(QSslCertificate::CommonName)
&& rootCA.issuerInfo(QSslCertificate::Organization) == chain.last().issuerInfo(QSslCertificate::Organization)) {
chain.append(rootCA);
break;
}
}
QListIterator<QSslCertificate> it(chain);
it.toBack();
int i = 0;
while (it.hasPrevious()) {
_menu->addMenu(buildCertMenu(_menu, it.previous(), account->approvedCerts(), i, systemCerts));
i++;
}
} else {
_menu->addAction(tr("The connection is not secure"))->setEnabled(false);
}
}
} // namespace OCC
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