* {@code PlatformHook} implementation for Microsoft Windows systems.

  * @since 1023

  */

    private static final byte[] INSECURE_PUBLIC_KEY = new byte[] {

        0x30, (byte) 0x82, 0x1, 0x22, 0x30, 0xd, 0x6, 0x9, 0x2a, (byte) 0x86, 0x48, (byte) 0x86, (byte) 0xf7, 0xd, 0x1, 0x1, 0x1, 0x5, 0x0, 0x3, (byte) 0x82, 0x1, 0xf, 0x0,

        0x30, (byte) 0x82, 0x01, 0x0a, 0x02, (byte) 0x82, 0x01, 0x01, 0x00, (byte) 0x95, (byte) 0x95, (byte) 0x88,

        (byte) 0x84, (byte) 0xc8, (byte) 0xd9, 0x6b, (byte) 0xc5, (byte) 0xda, 0x0b, 0x69, (byte) 0xbf, (byte) 0xfc, 0x7e, (byte) 0xb9, (byte) 0x96, 0x2c, (byte) 0xeb, (byte) 0x8f,

        (byte) 0xbc, 0x6e, 0x40, (byte) 0xe6, (byte) 0xe2, (byte) 0xfc, (byte) 0xf1, 0x7f, 0x73, (byte) 0xa7, (byte) 0x9d, (byte) 0xde, (byte) 0xc7, (byte) 0x88,

        0x57, 0x51, (byte) 0x84, (byte) 0xed, (byte) 0x96, (byte) 0xfb, (byte) 0xe1, 0x38, (byte) 0xef, 0x08, 0x2b, (byte) 0xf3, (byte) 0xc7, (byte) 0xc3,

        0x5d, (byte) 0xfe, (byte) 0xf9, 0x51, (byte) 0xe6, 0x29, (byte) 0xfc, (byte) 0xe5, 0x0d, (byte) 0xa1, 0x0d, (byte) 0xa8, (byte) 0xb4, (byte) 0xae,

        0x26, 0x18, 0x19, 0x4d, 0x6c, 0x0c, 0x3b, 0x12, (byte) 0xba, (byte) 0xbc, 0x5f, 0x32, (byte) 0xb3, (byte) 0xbe,

        (byte) 0x9d, 0x17, 0x0d, 0x4d, 0x2f, 0x1a, 0x48, (byte) 0xb7, (byte) 0xac, (byte) 0xf7, 0x1a, 0x43, 0x01, (byte) 0x97,

        (byte) 0xf4, (byte) 0xf8, 0x4c, (byte) 0xbb, 0x6a, (byte) 0xbc, 0x33, (byte) 0xe1, 0x73, 0x1e, (byte) 0x86, (byte) 0xfb, 0x2e, (byte) 0xb1,

        0x63, 0x75, (byte) 0x85, (byte) 0xdc, (byte) 0x82, 0x6c, 0x28, (byte) 0xf1, (byte) 0xe3, (byte) 0x90, 0x63, (byte) 0x9d, 0x3d, 0x48,

        (byte) 0x8a, (byte) 0x8c, 0x47, (byte) 0xe2, 0x10, 0x0b, (byte) 0xef, (byte) 0x91, (byte) 0x94, (byte) 0xb0, 0x6c, 0x4c, (byte) 0x80, 0x76,

        0x03, (byte) 0xe1, (byte) 0xb6, (byte) 0x90, (byte) 0x87, (byte) 0xd9, (byte) 0xae, (byte) 0xf4, (byte) 0x8e, (byte) 0xe0, (byte) 0x9f, (byte) 0xe7, 0x3a, 0x2c,

        0x2f, 0x21, (byte) 0xd4, 0x46, (byte) 0xba, (byte) 0x95, 0x70, (byte) 0xa9, 0x5b, 0x20, 0x2a, (byte) 0xfa, 0x52, 0x3e,

        (byte) 0x9d, (byte) 0xd9, (byte) 0xef, 0x28, (byte) 0xc5, (byte) 0xd1, 0x60, (byte) 0x89, 0x68, 0x6e, 0x7f, (byte) 0xd7, (byte) 0x9e, (byte) 0x89,

        0x4c, (byte) 0xeb, 0x4d, (byte) 0xd2, (byte) 0xc6, (byte) 0xf4, 0x2d, 0x02, 0x5d, (byte) 0xda, (byte) 0xde, 0x33, (byte) 0xfe, (byte) 0xc1,

        0x7e, (byte) 0xde, 0x4f, 0x1f, (byte) 0x9b, 0x6e, 0x6f, 0x0f, 0x66, 0x71, 0x19, (byte) 0xe9, 0x43, 0x3c,

        (byte) 0x83, 0x0a, 0x0f, 0x28, 0x21, (byte) 0xc8, 0x38, (byte) 0xd3, 0x4e, 0x48, (byte) 0xdf, (byte) 0xd4, (byte) 0x99, (byte) 0xb5,

        (byte) 0xc6, (byte) 0x8d, (byte) 0xd4, (byte) 0xc1, 0x69, 0x58, 0x79, (byte) 0x82, 0x32, (byte) 0x82, (byte) 0xd4, (byte) 0x86, (byte) 0xe2, 0x04,

        0x08, 0x63, (byte) 0x87, (byte) 0xf0, 0x2a, (byte) 0xf6, (byte) 0xec, 0x3e, 0x51, 0x0f, (byte) 0xda, (byte) 0xb4, 0x67, 0x19,

        0x5e, 0x16, 0x02, (byte) 0x9f, (byte) 0xf1, 0x19, 0x0c, 0x3e, (byte) 0xb8, 0x04, 0x49, 0x07, 0x53, 0x02,

        0x03, 0x01, 0x00, 0x01

    };

    private static final String WINDOWS_ROOT = "Windows-ROOT";

    @Override

    public void openUrl(String url) throws IOException {

        Runtime.getRuntime().exec("rundll32 url.dll,FileProtocolHandler " + url);

    }

    @Override

    public void initSystemShortcuts() {

        //Shortcut.registerSystemCut("system:menuexit", tr("reserved"), VK_Q, CTRL_DOWN_MASK);

        Shortcut.registerSystemShortcut("system:duplicate", tr("reserved"), VK_D, CTRL_DOWN_MASK); // not really system, but to avoid odd results

        // Windows 7 shortcuts: http://windows.microsoft.com/en-US/windows7/Keyboard-shortcuts

        // Shortcuts with setAutomatic(): items with automatic shortcuts will not be added to the menu bar at all

        // Don't know why Ctrl-Alt-Del isn't even listed on official Microsoft support page

        Shortcut.registerSystemShortcut("system:reset", tr("reserved"), VK_DELETE, CTRL_DOWN_MASK | ALT_DOWN_MASK).setAutomatic();

        // Ease of Access keyboard shortcuts

        Shortcut.registerSystemShortcut("microsoft-reserved-01", tr("reserved"), VK_PRINTSCREEN, ALT_DOWN_MASK | SHIFT_DOWN_MASK).setAutomatic(); // Turn High Contrast on or off

        Shortcut.registerSystemShortcut("microsoft-reserved-02", tr("reserved"), VK_NUM_LOCK, ALT_DOWN_MASK | SHIFT_DOWN_MASK).setAutomatic(); // Turn Mouse Keys on or off

        //Shortcut.registerSystemCut("microsoft-reserved-03", tr("reserved"), VK_U, );// Open the Ease of Access Center (TODO: Windows-U, how to handle it in Java ?)

        // General keyboard shortcuts

        //Shortcut.registerSystemShortcut("system:help", tr("reserved"), VK_F1, 0);                            // Display Help

        Shortcut.registerSystemShortcut("system:copy", tr("reserved"), VK_C, CTRL_DOWN_MASK);                // Copy the selected item

        Shortcut.registerSystemShortcut("system:cut", tr("reserved"), VK_X, CTRL_DOWN_MASK);                 // Cut the selected item

        Shortcut.registerSystemShortcut("system:paste", tr("reserved"), VK_V, CTRL_DOWN_MASK);               // Paste the selected item

        Shortcut.registerSystemShortcut("system:undo", tr("reserved"), VK_Z, CTRL_DOWN_MASK);                // Undo an action

        Shortcut.registerSystemShortcut("system:redo", tr("reserved"), VK_Y, CTRL_DOWN_MASK);                // Redo an action

        //Shortcut.registerSystemCut("microsoft-reserved-10", tr("reserved"), VK_DELETE, 0);                  // Delete the selected item and move it to the Recycle Bin

        //Shortcut.registerSystemCut("microsoft-reserved-11", tr("reserved"), VK_DELETE, SHIFT_DOWN_MASK);    // Delete the selected item without moving it to the Recycle Bin first

        //Shortcut.registerSystemCut("system:rename", tr("reserved"), VK_F2, 0);                          // Rename the selected item

        Shortcut.registerSystemShortcut("system:movefocusright", tr("reserved"), VK_RIGHT, CTRL_DOWN_MASK);  // Move the cursor to the beginning of the next word

        Shortcut.registerSystemShortcut("system:movefocusleft", tr("reserved"), VK_LEFT, CTRL_DOWN_MASK);    // Move the cursor to the beginning of the previous word

        Shortcut.registerSystemShortcut("system:movefocusdown", tr("reserved"), VK_DOWN, CTRL_DOWN_MASK);    // Move the cursor to the beginning of the next paragraph

        Shortcut.registerSystemShortcut("system:movefocusup", tr("reserved"), VK_UP, CTRL_DOWN_MASK);        // Move the cursor to the beginning of the previous paragraph

        //Shortcut.registerSystemCut("microsoft-reserved-17", tr("reserved"), VK_RIGHT, CTRL_DOWN_MASK | SHIFT_DOWN_MASK); // Select a block of text

        //Shortcut.registerSystemCut("microsoft-reserved-18", tr("reserved"), VK_LEFT, CTRL_DOWN_MASK | SHIFT_DOWN_MASK);  // Select a block of text

        //Shortcut.registerSystemCut("microsoft-reserved-19", tr("reserved"), VK_DOWN, CTRL_DOWN_MASK | SHIFT_DOWN_MASK);  // Select a block of text

        //Shortcut.registerSystemCut("microsoft-reserved-20", tr("reserved"), VK_UP, CTRL_DOWN_MASK | SHIFT_DOWN_MASK);    // Select a block of text

        //Shortcut.registerSystemCut("microsoft-reserved-21", tr("reserved"), VK_RIGHT, SHIFT_DOWN_MASK); // Select more than one item in a window or on the desktop, or select text within a document

        //Shortcut.registerSystemCut("microsoft-reserved-22", tr("reserved"), VK_LEFT, SHIFT_DOWN_MASK);  // Select more than one item in a window or on the desktop, or select text within a document

        //Shortcut.registerSystemCut("microsoft-reserved-23", tr("reserved"), VK_DOWN, SHIFT_DOWN_MASK);  // Select more than one item in a window or on the desktop, or select text within a document

        //Shortcut.registerSystemCut("microsoft-reserved-24", tr("reserved"), VK_UP, SHIFT_DOWN_MASK);    // Select more than one item in a window or on the desktop, or select text within a document

        //Shortcut.registerSystemCut("microsoft-reserved-25", tr("reserved"), VK_RIGHT+, CTRL_DOWN_MASK); // Select multiple individual items in a window or on the desktop (TODO: ctrl+arrow+spacebar, how to handle it in Java ?)

        //Shortcut.registerSystemCut("microsoft-reserved-26", tr("reserved"), VK_LEFT+, CTRL_DOWN_MASK);  // Select multiple individual items in a window or on the desktop (TODO: ctrl+arrow+spacebar, how to handle it in Java ?)

        //Shortcut.registerSystemCut("microsoft-reserved-27", tr("reserved"), VK_DOWN+, CTRL_DOWN_MASK);  // Select multiple individual items in a window or on the desktop (TODO: ctrl+arrow+spacebar, how to handle it in Java ?)

        //Shortcut.registerSystemCut("microsoft-reserved-28", tr("reserved"), VK_UP+, CTRL_DOWN_MASK);    // Select multiple individual items in a window or on the desktop (TODO: ctrl+arrow+spacebar, how to handle it in Java ?)

        Shortcut.registerSystemShortcut("system:selectall", tr("reserved"), VK_A, CTRL_DOWN_MASK);           // Select all items in a document or window

        //Shortcut.registerSystemCut("system:search", tr("reserved"), VK_F3, 0);                          // Search for a file or folder

        Shortcut.registerSystemShortcut("microsoft-reserved-31", tr("reserved"), VK_ENTER, ALT_DOWN_MASK).setAutomatic();   // Display properties for the selected item

        Shortcut.registerSystemShortcut("system:exit", tr("reserved"), VK_F4, ALT_DOWN_MASK).setAutomatic(); // Close the active item, or exit the active program

        Shortcut.registerSystemShortcut("microsoft-reserved-33", tr("reserved"), VK_SPACE, ALT_DOWN_MASK).setAutomatic();   // Open the shortcut menu for the active window

        //Shortcut.registerSystemCut("microsoft-reserved-34", tr("reserved"), VK_F4, CTRL_DOWN_MASK);     // Close the active document (in programs that allow you to have multiple documents open simultaneously)

        Shortcut.registerSystemShortcut("microsoft-reserved-35", tr("reserved"), VK_TAB, ALT_DOWN_MASK).setAutomatic();     // Switch between open items

        Shortcut.registerSystemShortcut("microsoft-reserved-36", tr("reserved"), VK_TAB, CTRL_DOWN_MASK | ALT_DOWN_MASK).setAutomatic(); // Use the arrow keys to switch between open items

        //Shortcut.registerSystemCut("microsoft-reserved-37", tr("reserved"), VK_TAB, ); // Cycle through programs on the taskbar by using Aero Flip 3-D (TODO: Windows-Tab, how to handle it in Java ?)

        //Shortcut.registerSystemCut("microsoft-reserved-38", tr("reserved"), VK_TAB, CTRL_DOWN_MASK | ); // Use the arrow keys to cycle through programs on the taskbar by using Aero Flip 3-D (TODO: Ctrl-Windows-Tab, how to handle it in Java ?)

        Shortcut.registerSystemShortcut("microsoft-reserved-39", tr("reserved"), VK_ESCAPE, ALT_DOWN_MASK).setAutomatic();  // Cycle through items in the order in which they were opened

        //Shortcut.registerSystemCut("microsoft-reserved-40", tr("reserved"), VK_F6, 0);                  // Cycle through screen elements in a window or on the desktop

        //Shortcut.registerSystemCut("microsoft-reserved-41", tr("reserved"), VK_F4, 0);                  // Display the address bar list in Windows Explorer

        Shortcut.registerSystemShortcut("microsoft-reserved-42", tr("reserved"), VK_F10, SHIFT_DOWN_MASK);   // Display the shortcut menu for the selected item

        Shortcut.registerSystemShortcut("microsoft-reserved-43", tr("reserved"), VK_ESCAPE, CTRL_DOWN_MASK).setAutomatic(); // Open the Start menu

        //Shortcut.registerSystemShortcut("microsoft-reserved-44", tr("reserved"), VK_F10, 0);                 // Activate the menu bar in the active program

        //Shortcut.registerSystemCut("microsoft-reserved-45", tr("reserved"), VK_RIGHT, 0);               // Open the next menu to the right, or open a submenu

        //Shortcut.registerSystemCut("microsoft-reserved-46", tr("reserved"), VK_LEFT, 0);                // Open the next menu to the left, or close a submenu

        //Shortcut.registerSystemCut("microsoft-reserved-47", tr("reserved"), VK_F5, 0);                  // Refresh the active window

        //Shortcut.registerSystemCut("microsoft-reserved-48", tr("reserved"), VK_UP, ALT_DOWN_MASK);      // View the folder one level up in Windows Explorer

        //Shortcut.registerSystemCut("microsoft-reserved-49", tr("reserved"), VK_ESCAPE, 0);              // Cancel the current task

        Shortcut.registerSystemShortcut("microsoft-reserved-50", tr("reserved"), VK_ESCAPE, CTRL_DOWN_MASK | SHIFT_DOWN_MASK).setAutomatic(); // Open Task Manager

        Shortcut.registerSystemShortcut("microsoft-reserved-51", tr("reserved"), VK_SHIFT, ALT_DOWN_MASK).setAutomatic();   // Switch the input language when multiple input languages are enabled

        Shortcut.registerSystemShortcut("microsoft-reserved-52", tr("reserved"), VK_SHIFT, CTRL_DOWN_MASK).setAutomatic();  // Switch the keyboard layout when multiple keyboard layouts are enabled

        //Shortcut.registerSystemCut("microsoft-reserved-53", tr("reserved"), ); // Change the reading direction of text in right-to-left reading languages (TODO: unclear)

    }

    @Override

    public String getDefaultStyle() {

        return "com.sun.java.swing.plaf.windows.WindowsLookAndFeel";

    }

    @Override

    public boolean rename(File from, File to) {

        if (to.exists())

            to.delete();

        return from.renameTo(to);

    }

    @Override

    public String getOSDescription() {

        return Utils.strip(System.getProperty("os.name")) + " " +

                ((System.getenv("ProgramFiles(x86)") == null) ? "32" : "64") + "-Bit";

    }

    /**

     * Loads Windows-ROOT keystore.

     * @return Windows-ROOT keystore

     * @throws NoSuchAlgorithmException if the algorithm used to check the integrity of the keystore cannot be found

     * @throws CertificateException if any of the certificates in the keystore could not be loaded

     * @throws IOException if there is an I/O or format problem with the keystore data, if a password is required but not given

     * @throws KeyStoreException if no Provider supports a KeyStore implementation for the type "Windows-ROOT"

     * @since 7343

     */

    public static KeyStore getRootKeystore() throws NoSuchAlgorithmException, CertificateException, IOException, KeyStoreException {

        KeyStore ks = KeyStore.getInstance(WINDOWS_ROOT);

        ks.load(null, null);

        return ks;

    }

    /**

     * Removes potential insecure certificates installed with previous versions of JOSM on Windows.

     * @throws NoSuchAlgorithmException on unsupported signature algorithms

     * @throws CertificateException if any of the certificates in the Windows keystore could not be loaded

     * @throws KeyStoreException if no Provider supports a KeyStoreSpi implementation for the type "Windows-ROOT"

     * @throws IOException if there is an I/O or format problem with the keystore data, if a password is required but not given

     * @since 7335

     */

    public static void removeInsecureCertificates() throws NoSuchAlgorithmException, CertificateException, KeyStoreException, IOException {

        // We offered before a public private key we need now to remove from Windows PCs as it might be a huge security risk (see #10230)

        PublicKey insecurePubKey = null;

        try {

            insecurePubKey = KeyFactory.getInstance("RSA").generatePublic(new X509EncodedKeySpec(INSECURE_PUBLIC_KEY));

        } catch (InvalidKeySpecException | NoSuchAlgorithmException e) {

            Main.error(e);

            return;

        }

        KeyStore ks = getRootKeystore();

        Enumeration<String> en = ks.aliases();

        Collection<String> insecureCertificates = new ArrayList<>();

        while (en.hasMoreElements()) {

            String alias = en.nextElement();

            // Look for certificates associated with a private key

            if (ks.isKeyEntry(alias)) {

                try {

                    ks.getCertificate(alias).verify(insecurePubKey);

                    // If no exception, this is a certificate signed with the insecure key -> remove it

                    insecureCertificates.add(alias);

                } catch (InvalidKeyException | NoSuchProviderException | SignatureException e) {

                    // If exception this is not a certificate related to JOSM, just trace it

                    Main.trace(alias + " --> " + e.getClass().getName());

                }

            }

        }

        // Remove insecure certificates

        if (!insecureCertificates.isEmpty()) {

            StringBuilder message = new StringBuilder("<html>");

            message.append(tr("A previous version of JOSM has installed a custom certificate in order to provide HTTPS support for Remote Control:"));

            message.append("<br><ul>");

            for (String alias : insecureCertificates) {

                message.append("<li>");

                message.append(alias);

                message.append("</li>");

            }

            message.append("</ul>");

            message.append(tr("It appears it could be an important <b>security risk</b>.<br><br>"+

                    "You are now going to be prompted by Windows to remove this insecure certificate.<br>For your own safety, <b>please click Yes</b> in next dialog."));

            message.append("</html>");

            JOptionPane.showMessageDialog(Main.parent, message.toString(), tr("Warning"), JOptionPane.WARNING_MESSAGE);

            for (String alias : insecureCertificates) {

                Main.warn(tr("Removing insecure certificate from {0} keystore: {1}", WINDOWS_ROOT, alias));

                try {

                    ks.deleteEntry(alias);

                } catch (KeyStoreException e) {

                    Main.error(tr("Unable to remove insecure certificate from keystore: {0}", e.getMessage()));

                }

            }

        }

    }

    @Override

    public boolean setupHttpsCertificate(String entryAlias, KeyStore.TrustedCertificateEntry trustedCert)

            throws KeyStoreException, NoSuchAlgorithmException, CertificateException, IOException {

        KeyStore ks = getRootKeystore();

        // Look for certificate to install

        String alias = ks.getCertificateAlias(trustedCert.getTrustedCertificate());

        if (alias != null) {

            // JOSM certificate found, return

            Main.debug(tr("JOSM localhost certificate found in {0} keystore: {1}", WINDOWS_ROOT, alias));

            return false;

        }

        // JOSM certificate not found, warn user

        StringBuilder message = new StringBuilder("<html>");

        message.append(tr("Remote Control is configured to provide HTTPS support.<br>"+

                "This requires to add a custom certificate generated by JOSM to the Windows Root CA store.<br><br>"+

                "You are now going to be prompted by Windows to confirm this operation.<br>"+

                "To enable proper HTTPS support, <b>please click Yes</b> in next dialog.<br><br>"+

                "If unsure, you can also click No then disable HTTPS support in Remote Control preferences."));

        message.append("</html>");

        JOptionPane.showMessageDialog(Main.parent, message.toString(), tr("HTTPS support in Remote Control"), JOptionPane.INFORMATION_MESSAGE);

        // install it to Windows-ROOT keystore, used by IE, Chrome and Safari, but not by Firefox

        Main.info(tr("Adding JOSM localhost certificate to {0} keystore", WINDOWS_ROOT));

        ks.setEntry(entryAlias, trustedCert, null);

        return true;

    }

}