Load WebUI certificate & key from file path

This allow users to update certificate & key more easily, i.e. without the need to import them
into qbt.

Closes #6675, #7547, #8315, #8564.

src/base/http/server.cpp

@@ -30,55 +30,69 @@
 
 #include "server.h"
 
+#include <algorithm>
+
 #include <QMutableListIterator>
 #include <QNetworkProxy>
+#include <QSslCipher>
+#include <QSslSocket>
 #include <QStringList>
 #include <QTimer>
-#ifndef QT_NO_OPENSSL
-#include <QSslSocket>
-#else
-#include <QTcpSocket>
-#endif
 
+#include "base/utils/net.h"
 #include "connection.h"
 
-static const int KEEP_ALIVE_DURATION = 7 * 1000;  // milliseconds
-static const int CONNECTIONS_LIMIT = 500;
-static const int CONNECTIONS_SCAN_INTERVAL = 2;  // seconds
+namespace
+{
+    const int KEEP_ALIVE_DURATION = 7 * 1000;  // milliseconds
+    const int CONNECTIONS_LIMIT = 500;
+    const int CONNECTIONS_SCAN_INTERVAL = 2;  // seconds
+
+    QList<QSslCipher> safeCipherList()
+    {
+        const QStringList badCiphers = {"idea", "rc4"};
+        const QList<QSslCipher> allCiphers = QSslSocket::supportedCiphers();
+        QList<QSslCipher> safeCiphers;
+        for (const QSslCipher &cipher : allCiphers) {
+            bool isSafe = true;
+            for (const QString &badCipher : badCiphers) {
+                if (cipher.name().contains(badCipher, Qt::CaseInsensitive)) {
+                    isSafe = false;
+                    break;
+                }
+            }
+
+            if (isSafe)
+                safeCiphers += cipher;
+        }
+
+        return safeCiphers;
+    }
+}
 
 using namespace Http;
 
 Server::Server(IRequestHandler *requestHandler, QObject *parent)
     : QTcpServer(parent)
     , m_requestHandler(requestHandler)
-#ifndef QT_NO_OPENSSL
     , m_https(false)
-#endif
 {
     setProxy(QNetworkProxy::NoProxy);
-#ifndef QT_NO_OPENSSL
     QSslSocket::setDefaultCiphers(safeCipherList());
-#endif
 
     QTimer *dropConnectionTimer = new QTimer(this);
     connect(dropConnectionTimer, &QTimer::timeout, this, &Server::dropTimedOutConnection);
     dropConnectionTimer->start(CONNECTIONS_SCAN_INTERVAL * 1000);
 }
 
-Server::~Server()
-{
-}
-
 void Server::incomingConnection(qintptr socketDescriptor)
 {
     if (m_connections.size() >= CONNECTIONS_LIMIT) return;
 
     QTcpSocket *serverSocket;
-#ifndef QT_NO_OPENSSL
     if (m_https)
         serverSocket = new QSslSocket(this);
     else
-#endif
         serverSocket = new QTcpSocket(this);
 
     if (!serverSocket->setSocketDescriptor(socketDescriptor)) {
@@ -86,7 +100,6 @@ void Server::incomingConnection(qintptr socketDescriptor)
         return;
     }
 
-#ifndef QT_NO_OPENSSL
     if (m_https) {
         static_cast<QSslSocket *>(serverSocket)->setProtocol(QSsl::SecureProtocols);
         static_cast<QSslSocket *>(serverSocket)->setPrivateKey(m_key);
@@ -94,7 +107,6 @@ void Server::incomingConnection(qintptr socketDescriptor)
         static_cast<QSslSocket *>(serverSocket)->setPeerVerifyMode(QSslSocket::VerifyNone);
         static_cast<QSslSocket *>(serverSocket)->startServerEncryption();
     }
-#endif
 
     Connection *c = new Connection(serverSocket, m_requestHandler, this);
     m_connections.append(c);
@@ -112,26 +124,20 @@ void Server::dropTimedOutConnection()
     }
 }
 
-#ifndef QT_NO_OPENSSL
-bool Server::setupHttps(const QByteArray &certificates, const QByteArray &key)
+bool Server::setupHttps(const QByteArray &certificates, const QByteArray &privateKey)
 {
-    QSslKey sslKey(key, QSsl::Rsa);
-    if (sslKey.isNull())
-        sslKey = QSslKey(key, QSsl::Ec);
+    const QList<QSslCertificate> certs {Utils::Net::loadSSLCertificate(certificates)};
+    const QSslKey key {Utils::Net::loadSSLKey(privateKey)};
 
-    const QList<QSslCertificate> certs = QSslCertificate::fromData(certificates);
-    const bool areCertsValid = !certs.empty() && std::all_of(certs.begin(), certs.end(), [](const QSslCertificate &c) { return !c.isNull(); });
+    if (certs.isEmpty() || key.isNull()) {
+        disableHttps();
+        return false;
+    }
 
-    if (!sslKey.isNull() && areCertsValid) {
-        m_key = sslKey;
+    m_key = key;
     m_certificates = certs;
     m_https = true;
     return true;
-    }
-    else {
-        disableHttps();
-        return false;
-    }
 }
 
 void Server::disableHttps()
@@ -140,25 +146,3 @@ void Server::disableHttps()
     m_certificates.clear();
     m_key.clear();
 }
-
-QList<QSslCipher> Server::safeCipherList() const
-{
-    const QStringList badCiphers = {"idea", "rc4"};
-    const QList<QSslCipher> allCiphers = QSslSocket::supportedCiphers();
-    QList<QSslCipher> safeCiphers;
-    for (const QSslCipher &cipher : allCiphers) {
-        bool isSafe = true;
-        for (const QString &badCipher : badCiphers) {
-            if (cipher.name().contains(badCipher, Qt::CaseInsensitive)) {
-                isSafe = false;
-                break;
-            }
-        }
-
-        if (isSafe)
-            safeCiphers += cipher;
-    }
-
-    return safeCiphers;
-}
-#endif // QT_NO_OPENSSL

src/base/http/server.h

@@ -31,13 +31,9 @@
 #ifndef HTTP_SERVER_H
 #define HTTP_SERVER_H
 
-#include <QTcpServer>
-
-#ifndef QT_NO_OPENSSL
 #include <QSslCertificate>
-#include <QSslCipher>
 #include <QSslKey>
-#endif
+#include <QTcpServer>
 
 namespace Http
 {
@@ -50,13 +46,10 @@ namespace Http
         Q_DISABLE_COPY(Server)
 
     public:
-        Server(IRequestHandler *requestHandler, QObject *parent = nullptr);
-        ~Server();
+        explicit Server(IRequestHandler *requestHandler, QObject *parent = nullptr);
 
-#ifndef QT_NO_OPENSSL
-        bool setupHttps(const QByteArray &certificates, const QByteArray &key);
+        bool setupHttps(const QByteArray &certificates, const QByteArray &privateKey);
         void disableHttps();
-#endif
 
     private slots:
         void dropTimedOutConnection();
@@ -67,13 +60,9 @@ namespace Http
         IRequestHandler *m_requestHandler;
         QList<Connection *> m_connections;  // for tracking persistent connections
 
-#ifndef QT_NO_OPENSSL
-        QList<QSslCipher> safeCipherList() const;
-
         bool m_https;
         QList<QSslCertificate> m_certificates;
         QSslKey m_key;
-#endif
     };
 }
 

src/base/preferences.cpp

@@ -633,24 +633,24 @@ void Preferences::setWebUiHttpsEnabled(bool enabled)
     setValue("Preferences/WebUI/HTTPS/Enabled", enabled);
 }
 
-QByteArray Preferences::getWebUiHttpsCertificate() const
+QString Preferences::getWebUIHttpsCertificatePath() const
 {
-    return value("Preferences/WebUI/HTTPS/Certificate").toByteArray();
+    return value("Preferences/WebUI/HTTPS/CertificatePath").toString();
 }
 
-void Preferences::setWebUiHttpsCertificate(const QByteArray &data)
+void Preferences::setWebUIHttpsCertificatePath(const QString &path)
 {
-    setValue("Preferences/WebUI/HTTPS/Certificate", data);
+    setValue("Preferences/WebUI/HTTPS/CertificatePath", path);
 }
 
-QByteArray Preferences::getWebUiHttpsKey() const
+QString Preferences::getWebUIHttpsKeyPath() const
 {
-    return value("Preferences/WebUI/HTTPS/Key").toByteArray();
+    return value("Preferences/WebUI/HTTPS/KeyPath").toString();
 }
 
-void Preferences::setWebUiHttpsKey(const QByteArray &data)
+void Preferences::setWebUIHttpsKeyPath(const QString &path)
 {
-    setValue("Preferences/WebUI/HTTPS/Key", data);
+    setValue("Preferences/WebUI/HTTPS/KeyPath", path);
 }
 
 bool Preferences::isAltWebUiEnabled() const

src/base/preferences.h

@@ -203,10 +203,10 @@ public:
     // HTTPS
     bool isWebUiHttpsEnabled() const;
     void setWebUiHttpsEnabled(bool enabled);
-    QByteArray getWebUiHttpsCertificate() const;
-    void setWebUiHttpsCertificate(const QByteArray &data);
-    QByteArray getWebUiHttpsKey() const;
-    void setWebUiHttpsKey(const QByteArray &data);
+    QString getWebUIHttpsCertificatePath() const;
+    void setWebUIHttpsCertificatePath(const QString &path);
+    QString getWebUIHttpsKeyPath() const;
+    void setWebUIHttpsKeyPath(const QString &path);
     bool isAltWebUiEnabled() const;
     void setAltWebUiEnabled(bool enabled);
     QString getWebUiRootFolder() const;

src/base/utils/net.cpp

@@ -28,6 +28,8 @@
 
 #include "net.h"
 
+#include <QSslCertificate>
+#include <QSslKey>
 #include <QString>
 
 namespace Utils
@@ -88,5 +90,32 @@ namespace Utils
         {
             return subnet.first.toString() + '/' + QString::number(subnet.second);
         }
+
+        QList<QSslCertificate> loadSSLCertificate(const QByteArray &data)
+        {
+            const QList<QSslCertificate> certs {QSslCertificate::fromData(data)};
+            if (std::any_of(certs.cbegin(), certs.cend(), [](const QSslCertificate &c) { return c.isNull(); }))
+                return {};
+            return certs;
+        }
+
+        bool isSSLCertificatesValid(const QByteArray &data)
+        {
+            return !loadSSLCertificate(data).isEmpty();
+        }
+
+        QSslKey loadSSLKey(const QByteArray &data)
+        {
+            // try different formats
+            QSslKey key {data, QSsl::Rsa};
+            if (!key.isNull())
+                return key;
+            return QSslKey(data, QSsl::Ec);
+        }
+
+        bool isSSLKeyValid(const QByteArray &data)
+        {
+            return !loadSSLKey(data).isNull();
+        }
     }
 }

src/base/utils/net.h

@@ -33,6 +33,8 @@
 #include <QList>
 #include <QPair>
 
+class QSslCertificate;
+class QSslKey;
 class QString;
 
 namespace Utils
@@ -47,6 +49,12 @@ namespace Utils
         bool isLoopbackAddress(const QHostAddress &addr);
         bool isIPInRange(const QHostAddress &addr, const QList<Subnet> &subnets);
         QString subnetToString(const Subnet &subnet);
+
+        const int MAX_SSL_FILE_SIZE = 1024 * 1024;
+        QList<QSslCertificate> loadSSLCertificate(const QByteArray &data);
+        bool isSSLCertificatesValid(const QByteArray &data);
+        QSslKey loadSSLKey(const QByteArray &data);
+        bool isSSLKeyValid(const QByteArray &data);
     }
 }
 

src/gui/optionsdialog.cpp

@@ -42,13 +42,9 @@
 #include <QSystemTrayIcon>
 #include <QTranslator>
 
-#ifndef QT_NO_OPENSSL
-#include <QSslCertificate>
-#include <QSslKey>
-#endif
-
 #include "base/bittorrent/session.h"
 #include "base/global.h"
+#include "base/http/server.h"
 #include "base/net/dnsupdater.h"
 #include "base/net/portforwarder.h"
 #include "base/net/proxyconfigurationmanager.h"
@@ -59,6 +55,7 @@
 #include "base/torrentfileguard.h"
 #include "base/unicodestrings.h"
 #include "base/utils/fs.h"
+#include "base/utils/net.h"
 #include "base/utils/password.h"
 #include "base/utils/random.h"
 #include "addnewtorrentdialog.h"
@@ -196,11 +193,6 @@ OptionsDialog::OptionsDialog(QWidget *parent)
     }
 #endif
 
-#if defined(QT_NO_OPENSSL)
-    m_ui->checkWebUiHttps->setVisible(false);
-    m_ui->checkSmtpSSL->setVisible(false);
-#endif
-
 #ifndef Q_OS_WIN
     m_ui->checkStartup->setVisible(false);
 #endif
@@ -390,14 +382,23 @@ OptionsDialog::OptionsDialog(QWidget *parent)
 
 #ifndef DISABLE_WEBUI
     // Web UI tab
+    m_ui->textWebUIHttpsCert->setMode(FileSystemPathEdit::Mode::FileOpen);
+    m_ui->textWebUIHttpsCert->setFileNameFilter(tr("Certificate") + QLatin1String(" (*.cer *.crt *.pem)"));
+    m_ui->textWebUIHttpsCert->setDialogCaption(tr("Select certificate"));
+    m_ui->textWebUIHttpsKey->setMode(FileSystemPathEdit::Mode::FileOpen);
+    m_ui->textWebUIHttpsKey->setFileNameFilter(tr("Private key") + QLatin1String(" (*.key *.pem)"));
+    m_ui->textWebUIHttpsKey->setDialogCaption(tr("Select private key"));
+
     connect(m_ui->textServerDomains, &QLineEdit::textChanged, this, &ThisType::enableApplyButton);
     connect(m_ui->checkWebUi, &QGroupBox::toggled, this, &ThisType::enableApplyButton);
     connect(m_ui->textWebUiAddress, &QLineEdit::textChanged, this, &ThisType::enableApplyButton);
     connect(m_ui->spinWebUiPort, qSpinBoxValueChanged, this, &ThisType::enableApplyButton);
     connect(m_ui->checkWebUIUPnP, &QAbstractButton::toggled, this, &ThisType::enableApplyButton);
     connect(m_ui->checkWebUiHttps, &QGroupBox::toggled, this, &ThisType::enableApplyButton);
-    connect(m_ui->btnWebUiKey, &QAbstractButton::clicked, this, &ThisType::enableApplyButton);
-    connect(m_ui->btnWebUiCrt, &QAbstractButton::clicked, this, &ThisType::enableApplyButton);
+    connect(m_ui->textWebUIHttpsCert, &FileSystemPathLineEdit::selectedPathChanged, this, &ThisType::enableApplyButton);
+    connect(m_ui->textWebUIHttpsCert, &FileSystemPathLineEdit::selectedPathChanged, this, [this](const QString &s) { webUIHttpsCertChanged(s, ShowError::Show); });
+    connect(m_ui->textWebUIHttpsKey, &FileSystemPathLineEdit::selectedPathChanged, this, &ThisType::enableApplyButton);
+    connect(m_ui->textWebUIHttpsKey, &FileSystemPathLineEdit::selectedPathChanged, this, [this](const QString &s) { webUIHttpsKeyChanged(s, ShowError::Show); });
     connect(m_ui->textWebUiUsername, &QLineEdit::textChanged, this, &ThisType::enableApplyButton);
     connect(m_ui->textWebUiPassword, &QLineEdit::textChanged, this, &ThisType::enableApplyButton);
     connect(m_ui->checkBypassLocalAuth, &QAbstractButton::toggled, this, &ThisType::enableApplyButton);
@@ -722,11 +723,8 @@ void OptionsDialog::saveOptions()
         pref->setWebUiPort(m_ui->spinWebUiPort->value());
         pref->setUPnPForWebUIPort(m_ui->checkWebUIUPnP->isChecked());
         pref->setWebUiHttpsEnabled(m_ui->checkWebUiHttps->isChecked());
-        // HTTPS
-        if (m_ui->checkWebUiHttps->isChecked()) {
-            pref->setWebUiHttpsCertificate(m_sslCert);
-            pref->setWebUiHttpsKey(m_sslKey);
-        }
+        pref->setWebUIHttpsCertificatePath(m_ui->textWebUIHttpsCert->selectedPath());
+        pref->setWebUIHttpsKeyPath(m_ui->textWebUIHttpsKey->selectedPath());
         // Authentication
         pref->setWebUiUsername(webUiUsername());
         if (!webUiPassword().isEmpty())
@@ -1089,8 +1087,8 @@ void OptionsDialog::loadOptions()
     m_ui->spinWebUiPort->setValue(pref->getWebUiPort());
     m_ui->checkWebUIUPnP->setChecked(pref->useUPnPForWebUIPort());
     m_ui->checkWebUiHttps->setChecked(pref->isWebUiHttpsEnabled());
-    setSslCertificate(pref->getWebUiHttpsCertificate());
-    setSslKey(pref->getWebUiHttpsKey());
+    webUIHttpsCertChanged(pref->getWebUIHttpsCertificatePath(), ShowError::NotShow);
+    webUIHttpsKeyChanged(pref->getWebUIHttpsKeyPath(), ShowError::NotShow);
     m_ui->textWebUiUsername->setText(pref->getWebUiUsername());
     m_ui->checkBypassLocalAuth->setChecked(!pref->isWebUiLocalAuthEnabled());
     m_ui->checkBypassAuthSubnetWhitelist->setChecked(pref->isWebUiAuthSubnetWhitelistEnabled());
@@ -1559,39 +1557,57 @@ QString OptionsDialog::webUiPassword() const
     return m_ui->textWebUiPassword->text();
 }
 
-void OptionsDialog::showConnectionTab()
+void OptionsDialog::webUIHttpsCertChanged(const QString &path, const ShowError showError)
 {
-    m_ui->tabSelection->setCurrentRow(TAB_CONNECTION);
-}
+    m_ui->textWebUIHttpsCert->setSelectedPath(path);
+    m_ui->lblSslCertStatus->setPixmap(Utils::Gui::scaledPixmapSvg(":/icons/qbt-theme/security-low.svg", this, 24));
 
-void OptionsDialog::on_btnWebUiCrt_clicked()
-{
-    const QString filename = QFileDialog::getOpenFileName(this, tr("Import SSL certificate"), QString(), tr("SSL Certificate") + QLatin1String(" (*.crt *.pem)"));
-    if (filename.isEmpty())
+    if (path.isEmpty())
         return;
 
-    QFile cert(filename);
-    if (!cert.open(QIODevice::ReadOnly))
+    QFile file(path);
+    if (!file.open(QIODevice::ReadOnly)) {
+        if (showError == ShowError::Show)
+            QMessageBox::warning(this, tr("Invalid path"), file.errorString());
         return;
+    }
 
-    bool success = setSslCertificate(cert.read(1024 * 1024));
-    if (!success)
+    if (!Utils::Net::isSSLCertificatesValid(file.read(Utils::Net::MAX_SSL_FILE_SIZE))) {
+        if (showError == ShowError::Show)
             QMessageBox::warning(this, tr("Invalid certificate"), tr("This is not a valid SSL certificate."));
+        return;
+    }
+
+    m_ui->lblSslCertStatus->setPixmap(Utils::Gui::scaledPixmapSvg(":/icons/qbt-theme/security-high.svg", this, 24));
 }
 
-void OptionsDialog::on_btnWebUiKey_clicked()
+void OptionsDialog::webUIHttpsKeyChanged(const QString &path, const ShowError showError)
 {
-    const QString filename = QFileDialog::getOpenFileName(this, tr("Import SSL key"), QString(), tr("SSL key") + QLatin1String(" (*.key *.pem)"));
-    if (filename.isEmpty())
+    m_ui->textWebUIHttpsKey->setSelectedPath(path);
+    m_ui->lblSslKeyStatus->setPixmap(Utils::Gui::scaledPixmapSvg(":/icons/qbt-theme/security-low.svg", this, 24));
+
+    if (path.isEmpty())
         return;
 
-    QFile key(filename);
-    if (!key.open(QIODevice::ReadOnly))
+    QFile file(path);
+    if (!file.open(QIODevice::ReadOnly)) {
+        if (showError == ShowError::Show)
+            QMessageBox::warning(this, tr("Invalid path"), file.errorString());
         return;
+    }
 
-    bool success = setSslKey(key.read(1024 * 1024));
-    if (!success)
+    if (!Utils::Net::isSSLKeyValid(file.read(Utils::Net::MAX_SSL_FILE_SIZE))) {
+        if (showError == ShowError::Show)
             QMessageBox::warning(this, tr("Invalid key"), tr("This is not a valid SSL key."));
+        return;
+    }
+
+    m_ui->lblSslKeyStatus->setPixmap(Utils::Gui::scaledPixmapSvg(":/icons/qbt-theme/security-high.svg", this, 24));
+}
+
+void OptionsDialog::showConnectionTab()
+{
+    m_ui->tabSelection->setCurrentRow(TAB_CONNECTION);
 }
 
 void OptionsDialog::on_registerDNSBtn_clicked()
@@ -1698,45 +1714,6 @@ QString OptionsDialog::languageToLocalizedString(const QLocale &locale)
     }
 }
 
-bool OptionsDialog::setSslKey(const QByteArray &key)
-{
-#ifndef QT_NO_OPENSSL
-    // try different formats
-    const bool isKeyValid = (!QSslKey(key, QSsl::Rsa).isNull() || !QSslKey(key, QSsl::Ec).isNull());
-    if (isKeyValid) {
-        m_ui->lblSslKeyStatus->setPixmap(Utils::Gui::scaledPixmapSvg(":/icons/qbt-theme/security-high.svg", this, 24));
-        m_sslKey = key;
-    }
-    else {
-        m_ui->lblSslKeyStatus->setPixmap(Utils::Gui::scaledPixmapSvg(":/icons/qbt-theme/security-low.svg", this, 24));
-        m_sslKey.clear();
-    }
-    return isKeyValid;
-#else
-    Q_UNUSED(key);
-    return false;
-#endif
-}
-
-bool OptionsDialog::setSslCertificate(const QByteArray &cert)
-{
-#ifndef QT_NO_OPENSSL
-    const bool isCertValid = !QSslCertificate(cert).isNull();
-    if (isCertValid) {
-        m_ui->lblSslCertStatus->setPixmap(Utils::Gui::scaledPixmapSvg(":/icons/qbt-theme/security-high.svg", this, 24));
-        m_sslCert = cert;
-    }
-    else {
-        m_ui->lblSslCertStatus->setPixmap(Utils::Gui::scaledPixmapSvg(":/icons/qbt-theme/security-low.svg", this, 24));
-        m_sslCert.clear();
-    }
-    return isCertValid;
-#else
-    Q_UNUSED(cert);
-    return false;
-#endif
-}
-
 bool OptionsDialog::schedTimesOk()
 {
     if (m_ui->timeEditScheduleFrom->time() == m_ui->timeEditScheduleTo->time()) {

src/gui/optionsdialog.h

@@ -60,7 +60,6 @@ class OptionsDialog : public QDialog
     Q_OBJECT
     using ThisType = OptionsDialog;
 
-private:
     enum Tabs
     {
         TAB_UI,
@@ -73,6 +72,12 @@ private:
         TAB_ADVANCED
     };
 
+    enum class ShowError
+    {
+        NotShow,
+        Show
+    };
+
 public:
     // Constructor / Destructor
     OptionsDialog(QWidget *parent = nullptr);
@@ -102,10 +107,10 @@ private slots:
     void on_randomButton_clicked();
     void on_addScanFolderButton_clicked();
     void on_removeScanFolderButton_clicked();
-    void on_btnWebUiCrt_clicked();
-    void on_btnWebUiKey_clicked();
     void on_registerDNSBtn_clicked();
     void setLocale(const QString &localeStr);
+    void webUIHttpsCertChanged(const QString &path, ShowError showError);
+    void webUIHttpsKeyChanged(const QString &path, ShowError showError);
 
 private:
     // Methods
@@ -164,17 +169,14 @@ private:
     int getMaxActiveDownloads() const;
     int getMaxActiveUploads() const;
     int getMaxActiveTorrents() const;
+    // WebUI
     bool isWebUiEnabled() const;
     QString webUiUsername() const;
     QString webUiPassword() const;
-    // WebUI SSL Cert / key
-    bool setSslKey(const QByteArray &key);
-    bool setSslCertificate(const QByteArray &cert);
-    bool schedTimesOk();
     bool webUIAuthenticationOk();
     bool isAlternativeWebUIPathValid();
 
-    QByteArray m_sslCert, m_sslKey;
+    bool schedTimesOk();
 
     Ui::OptionsDialog *m_ui;
     QAbstractButton *m_applyButton;

src/gui/optionsdialog.ui

@@ -2966,79 +2966,25 @@ Specify an IPv4 or IPv6 address. You can specify "0.0.0.0" for any IPv
                   <bool>false</bool>
                  </property>
                  <layout class="QGridLayout" name="gridLayout_11">
-                  <item row="0" column="0">
-                   <widget class="QLabel" name="lblSslCertStatus"/>
-                  </item>
-                  <item row="0" column="1">
-                   <widget class="QLabel" name="lblWebUiCrt">
-                    <property name="text">
-                     <string>Certificate:</string>
-                    </property>
-                    <property name="alignment">
-                     <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-                    </property>
-                   </widget>
-                  </item>
-                  <item row="0" column="2">
-                   <layout class="QHBoxLayout" name="horizontalLayout_4">
-                    <item>
-                     <widget class="QPushButton" name="btnWebUiCrt">
-                      <property name="text">
-                       <string>Import SSL Certificate</string>
-                      </property>
-                     </widget>
-                    </item>
-                    <item>
-                     <spacer name="horizontalSpacer_12">
-                      <property name="orientation">
-                       <enum>Qt::Horizontal</enum>
-                      </property>
-                      <property name="sizeHint" stdset="0">
-                       <size>
-                        <width>138</width>
-                        <height>28</height>
-                       </size>
-                      </property>
-                     </spacer>
-                    </item>
-                   </layout>
-                  </item>
-                  <item row="1" column="0">
-                   <widget class="QLabel" name="lblSslKeyStatus"/>
-                  </item>
                   <item row="1" column="1">
                    <widget class="QLabel" name="lblWebUiKey">
                     <property name="text">
                      <string>Key:</string>
                     </property>
-                    <property name="alignment">
-                     <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-                    </property>
                    </widget>
                   </item>
-                  <item row="1" column="2">
-                   <layout class="QHBoxLayout" name="horizontalLayout_5">
-                    <item>
-                     <widget class="QPushButton" name="btnWebUiKey">
+                  <item row="0" column="1">
+                   <widget class="QLabel" name="lblWebUiCrt">
                     <property name="text">
-                       <string>Import SSL Key</string>
+                     <string>Certificate:</string>
                     </property>
                    </widget>
                   </item>
-                    <item>
-                     <spacer name="horizontalSpacer_13">
-                      <property name="orientation">
-                       <enum>Qt::Horizontal</enum>
-                      </property>
-                      <property name="sizeHint" stdset="0">
-                       <size>
-                        <width>40</width>
-                        <height>20</height>
-                       </size>
-                      </property>
-                     </spacer>
+                  <item row="0" column="0">
+                   <widget class="QLabel" name="lblSslCertStatus"/>
                   </item>
-                   </layout>
+                  <item row="1" column="0">
+                   <widget class="QLabel" name="lblSslKeyStatus"/>
                   </item>
                   <item row="2" column="0" colspan="3">
                    <widget class="QLabel" name="lblWebUIInfo">
@@ -3050,6 +2996,12 @@ Specify an IPv4 or IPv6 address. You can specify &quot;0.0.0.0&quot; for any IPv
                     </property>
                    </widget>
                   </item>
+                  <item row="0" column="2">
+                   <widget class="FileSystemPathLineEdit" name="textWebUIHttpsCert" native="true"/>
+                  </item>
+                  <item row="1" column="2">
+                   <widget class="FileSystemPathLineEdit" name="textWebUIHttpsKey" native="true"/>
+                  </item>
                  </layout>
                 </widget>
                </item>
@@ -3464,8 +3416,6 @@ Use ';' to split multiple entries. Can use wildcard '*'.</string>
   <tabstop>comboRatioLimitAct</tabstop>
   <tabstop>checkWebUIUPnP</tabstop>
   <tabstop>checkWebUiHttps</tabstop>
-  <tabstop>btnWebUiCrt</tabstop>
-  <tabstop>btnWebUiKey</tabstop>
   <tabstop>checkBypassLocalAuth</tabstop>
   <tabstop>checkBypassAuthSubnetWhitelist</tabstop>
   <tabstop>IPSubnetWhitelistButton</tabstop>

src/webui/api/appcontroller.cpp

@@ -39,11 +39,6 @@
 #include <QTimer>
 #include <QTranslator>
 
-#ifndef QT_NO_OPENSSL
-#include <QSslCertificate>
-#include <QSslKey>
-#endif
-
 #include "base/bittorrent/session.h"
 #include "base/global.h"
 #include "base/net/portforwarder.h"
@@ -210,8 +205,8 @@ void AppController::preferencesAction()
     data["web_ui_port"] = pref->getWebUiPort();
     data["web_ui_upnp"] = pref->useUPnPForWebUIPort();
     data["use_https"] = pref->isWebUiHttpsEnabled();
-    data["ssl_key"] = QString::fromLatin1(pref->getWebUiHttpsKey());
-    data["ssl_cert"] = QString::fromLatin1(pref->getWebUiHttpsCertificate());
+    data["web_ui_https_cert_path"] = pref->getWebUIHttpsCertificatePath();
+    data["web_ui_https_key_path"] = pref->getWebUIHttpsKeyPath();
     // Authentication
     data["web_ui_username"] = pref->getWebUiUsername();
     data["bypass_local_auth"] = !pref->isWebUiLocalAuthEnabled();
@@ -505,18 +500,10 @@ void AppController::setPreferencesAction()
         pref->setUPnPForWebUIPort(m["web_ui_upnp"].toBool());
     if (m.contains("use_https"))
         pref->setWebUiHttpsEnabled(m["use_https"].toBool());
-#ifndef QT_NO_OPENSSL
-    if (m.contains("ssl_key")) {
-        QByteArray raw_key = m["ssl_key"].toString().toLatin1();
-        if (!QSslKey(raw_key, QSsl::Rsa).isNull())
-            pref->setWebUiHttpsKey(raw_key);
-    }
-    if (m.contains("ssl_cert")) {
-        QByteArray raw_cert = m["ssl_cert"].toString().toLatin1();
-        if (!QSslCertificate(raw_cert).isNull())
-            pref->setWebUiHttpsCertificate(raw_cert);
-    }
-#endif
+    if ((it = m.find(QLatin1String("web_ui_https_cert_path"))) != m.constEnd())
+        pref->setWebUIHttpsCertificatePath(it.value().toString());
+    if ((it = m.find(QLatin1String("web_ui_https_key_path"))) != m.constEnd())
+        pref->setWebUIHttpsKeyPath(it.value().toString());
     // Authentication
     if (m.contains("web_ui_username"))
         pref->setWebUiUsername(m["web_ui_username"].toString());

src/webui/webui.cpp

@@ -28,11 +28,14 @@
 
 #include "webui.h"
 
+#include <QFile>
+
 #include "base/http/server.h"
 #include "base/logger.h"
 #include "base/net/dnsupdater.h"
 #include "base/net/portforwarder.h"
 #include "base/preferences.h"
+#include "base/utils/net.h"
 #include "webapplication.h"
 
 WebUI::WebUI()
@@ -77,11 +80,18 @@ void WebUI::configure()
                 m_httpServer->close();
         }
 
-#ifndef QT_NO_OPENSSL
         if (pref->isWebUiHttpsEnabled()) {
-            const QByteArray certs = pref->getWebUiHttpsCertificate();
-            const QByteArray key = pref->getWebUiHttpsKey();
-            bool success = m_httpServer->setupHttps(certs, key);
+            const auto readData = [](const QString &path) -> QByteArray
+            {
+                QFile file(path);
+                if (!file.open(QIODevice::ReadOnly))
+                    return {};
+                return file.read(Utils::Net::MAX_SSL_FILE_SIZE);
+            };
+            const QByteArray cert = readData(pref->getWebUIHttpsCertificatePath());
+            const QByteArray key = readData(pref->getWebUIHttpsKeyPath());
+
+            const bool success = m_httpServer->setupHttps(cert, key);
             if (success)
                 logger->addMessage(tr("Web UI: HTTPS setup successful"));
             else
@@ -90,7 +100,6 @@ void WebUI::configure()
         else {
             m_httpServer->disableHttps();
         }
-#endif
 
         if (!m_httpServer->isListening()) {
             const auto address = (serverAddressString == "*" || serverAddressString.isEmpty())

src/webui/www/private/preferences_content.html

@@ -682,18 +682,18 @@
             <table>
                 <tr>
                     <td>
-                        <label for="ssl_key_textarea">QBT_TR(Key:)QBT_TR[CONTEXT=OptionsDialog]</label>
+                        <label for="ssl_cert_text">QBT_TR(Certificate:)QBT_TR[CONTEXT=OptionsDialog]</label>
                     </td>
                     <td>
-                        <textarea id="ssl_key_textarea" rows="5" cols="70"></textarea>
+                        <input type="text" id="ssl_cert_text" style="width: 30em;" />
                     </td>
                 </tr>
                 <tr>
                     <td>
-                        <label for="ssl_cert_textarea">QBT_TR(Certificate:)QBT_TR[CONTEXT=OptionsDialog]</label>
+                        <label for="ssl_key_text">QBT_TR(Key:)QBT_TR[CONTEXT=OptionsDialog]</label>
                     </td>
                     <td>
-                        <textarea id="ssl_cert_textarea" rows="5" cols="70"></textarea>
+                        <input type="text" id="ssl_key_text" style="width: 30em;" />
                     </td>
                 </tr>
             </table>
@@ -1043,8 +1043,8 @@
     // Web UI tab
     var updateHttpsSettings = function() {
         var isUseHttpsEnabled = $('use_https_checkbox').getProperty('checked');
-        $('ssl_key_textarea').setProperty('disabled', !isUseHttpsEnabled);
-        $('ssl_cert_textarea').setProperty('disabled', !isUseHttpsEnabled);
+        $('ssl_cert_text').setProperty('disabled', !isUseHttpsEnabled);
+        $('ssl_key_text').setProperty('disabled', !isUseHttpsEnabled);
     };
 
     var updateBypasssAuthSettings = function() {
@@ -1330,8 +1330,8 @@
                     $('webui_port_value').setProperty('value', pref.web_ui_port);
                     $('webui_upnp_checkbox').setProperty('checked', pref.web_ui_upnp);
                     $('use_https_checkbox').setProperty('checked', pref.use_https);
-                    $('ssl_key_textarea').setProperty('value', pref.ssl_key);
-                    $('ssl_cert_textarea').setProperty('value', pref.ssl_cert);
+                    $('ssl_cert_text').setProperty('value', pref.web_ui_https_cert_path);
+                    $('ssl_key_text').setProperty('value', pref.web_ui_https_key_path);
                     updateHttpsSettings();
 
                     // Authentication
@@ -1646,8 +1646,8 @@
         settings.set('web_ui_port', web_ui_port);
         settings.set('web_ui_upnp', $('webui_upnp_checkbox').getProperty('checked'));
         settings.set('use_https', $('use_https_checkbox').getProperty('checked'));
-        settings.set('ssl_key', $('ssl_key_textarea').getProperty('value'));
-        settings.set('ssl_cert', $('ssl_cert_textarea').getProperty('value'));
+        settings.set('web_ui_https_cert_path', $('ssl_cert_text').getProperty('value'));
+        settings.set('web_ui_https_key_path', $('ssl_key_text').getProperty('value'));
 
         // Authentication
         var web_ui_username = $('webui_username_text').getProperty('value');