// Copyright (c) 2014, Outercurve Foundation.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// - Redistributions of source code must  retain  the  above copyright notice, this
//   list of conditions and the following disclaimer.
//
// - Redistributions in binary form  must  reproduce the  above  copyright  notice,
//   this list of conditions  and  the  following  disclaimer in  the documentation
//   and/or other materials provided with the distribution.
//
// - Neither  the  name  of  the  Outercurve Foundation  nor   the   names  of  its
//   contributors may be used to endorse or  promote  products  derived  from  this
//   software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,  BUT  NOT  LIMITED TO, THE IMPLIED
// WARRANTIES  OF  MERCHANTABILITY   AND  FITNESS  FOR  A  PARTICULAR  PURPOSE  ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
// ANY DIRECT, INDIRECT, INCIDENTAL,  SPECIAL,  EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO,  PROCUREMENT  OF  SUBSTITUTE  GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)  HOWEVER  CAUSED AND ON
// ANY  THEORY  OF  LIABILITY,  WHETHER  IN  CONTRACT,  STRICT  LIABILITY,  OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE)  ARISING  IN  ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

using Microsoft.Web.Administration;
using Microsoft.Win32;
using System;
using System.Collections.Generic;
using WebsitePanel.Providers.Common;
using WebsitePanel.Providers.Web.Iis;

namespace WebsitePanel.Providers.Web
{
    public class IIs80 : IIs70
    {
        private SslFlags SSLFlags {
            get
            {
                return (UseSni ? SslFlags.Sni : SslFlags.None) | (UseCcs ? SslFlags.CentralCertStore : SslFlags.None);
            }
        }

        public string CCSUncPath {
            get { return ProviderSettings["SSLCCSUNCPath"]; }
        }

        public string CCSCommonPassword {
            get { return ProviderSettings["SSLCCSCommonPassword"]; }
        }

        public bool UseSni {
            get
            {
                try
                {
                    return Convert.ToBoolean(ProviderSettings["SSLUseSNI"]);
                }
                catch
                {
                    return false;
                }
            }
        }

        public bool UseCcs
        {
            get
            {
                try
                {
                    return Convert.ToBoolean(ProviderSettings["SSLUseCCS"]);
                }
                catch
                {
                    return false;
                }
            }
        }

        public override SettingPair[] GetProviderDefaultSettings()
        {
            var allSettings = new List<SettingPair>();
            allSettings.AddRange(base.GetProviderDefaultSettings());

            // Add these to get som default values in. These are also used a marker in the IIS70_Settings.ascx.cs to know that it is the IIS80 provider that is used
            allSettings.Add(new SettingPair("SSLUseCCS", false.ToString()));
            allSettings.Add(new SettingPair("SSLUseSNI", false.ToString()));
            allSettings.Add(new SettingPair("SSLCCSUNCPath", ""));
            allSettings.Add(new SettingPair("SSLCCSCommonPassword", ""));

            return allSettings.ToArray();
        }

        public override string[] Install()
        {
            var messages = new List<string>();

            messages.AddRange(base.Install());

            // TODO: Setup ccs

            return messages.ToArray();
        }

        public override bool IsIISInstalled()
        {
            int value = 0;
            RegistryKey root = Registry.LocalMachine;
            RegistryKey rk = root.OpenSubKey("SOFTWARE\\Microsoft\\InetStp");
            if (rk != null)
            {
                value = (int)rk.GetValue("MajorVersion", null);
                rk.Close();
            }

            return value == 8;
        }

        public override bool IsInstalled()
        {
            return IsIISInstalled();
        }

        public override bool CheckCertificate(WebSite webSite)
        {
            var sslObjectService = new SSLModuleService80(SSLFlags, CCSUncPath, CCSCommonPassword);

            return sslObjectService.CheckCertificate(webSite);
        }

        public override ResultObject DeleteCertificate(SSLCertificate certificate, WebSite website)
        {
            var sslObjectService = new SSLModuleService80(SSLFlags, CCSUncPath, CCSCommonPassword);

            return sslObjectService.DeleteCertificate(certificate, website);
        }

        public override SSLCertificate installPFX(byte[] certificate, string password, WebSite website)
        {
            var sslObjectService = new SSLModuleService80(SSLFlags, CCSUncPath, CCSCommonPassword);
			
			return sslObjectService.InstallPfx(certificate, password, website);
        }

        public override SSLCertificate ImportCertificate(WebSite website)
        {
            var sslObjectService = new SSLModuleService80(SSLFlags, CCSUncPath, CCSCommonPassword);
            
            return sslObjectService.ImportCertificate(website);
        }

        public override byte[] exportCertificate(string serialNumber, string password)
        {
            var sslObjectService = new SSLModuleService80(SSLFlags, CCSUncPath, CCSCommonPassword);
			
			return sslObjectService.ExportPfx(serialNumber, password);
        }

        public override SSLCertificate generateCSR(SSLCertificate certificate)
        {
            var sslObjectService = new SSLModuleService80(SSLFlags, CCSUncPath, CCSCommonPassword);
			
			sslObjectService.GenerateCsr(certificate);

			return certificate;
        }

        public override List<SSLCertificate> getServerCertificates()
        {
			var sslObjectService = new SSLModuleService80(SSLFlags, CCSUncPath, CCSCommonPassword);
			
			return sslObjectService.GetServerCertificates();
        }

        public override SSLCertificate installCertificate(SSLCertificate certificate, WebSite website)
        {
            var sslObjectService = new SSLModuleService80(SSLFlags, CCSUncPath, CCSCommonPassword);
			
			return sslObjectService.InstallCertificate(certificate, website);
        }

        public override WebSite GetSite(string siteId)
        {
            var site = base.GetSite(siteId);
            site.SniEnabled = UseSni;
            return site;
        }
    }
}