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/*
KeePass Password Safe - The Open-Source Password Manager
Copyright (C) 2003-2021 Dominik Reichl <dominik.reichl@t-online.de>
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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
using System;
using System.Diagnostics;
using System.IO;
using KeePass.Util;
using KeePass.Util.Spr;
using KeePassLib;
using KeePassLib.Native;
using KeePassLib.Utility;
namespace KeePass.App
{
public enum AppHelpSource
{
Local,
Online
}
/// <summary>
/// Application help provider. Starts an external application that
/// shows help on a specified topic.
/// </summary>
public static class AppHelp
{
private static string g_strLocalHelpFile = null;
/// <summary>
/// Get the path of the local help file.
/// </summary>
public static string LocalHelpFile
{
get
{
if(g_strLocalHelpFile == null)
g_strLocalHelpFile = UrlUtil.StripExtension(
WinUtil.GetExecutable()) + ".chm";
return g_strLocalHelpFile;
}
}
public static bool LocalHelpAvailable
{
get
{
try
{
string strFile = AppHelp.LocalHelpFile;
if(!string.IsNullOrEmpty(strFile))
return Directory.Exists("/usr/share/doc/keepass2/Chm/help/");
}
catch(Exception) { Debug.Assert(false); }
return false;
}
}
public static AppHelpSource PreferredHelpSource
{
get
{
return (Program.Config.Application.HelpUseLocal ?
AppHelpSource.Local : AppHelpSource.Online);
}
set
{
Program.Config.Application.HelpUseLocal =
(value == AppHelpSource.Local);
}
}
/// <summary>
/// Show a help page.
/// </summary>
/// <param name="strTopic">Topic name. May be <c>null</c>.</param>
/// <param name="strSection">Section name. May be <c>null</c>. Must not start
/// with the '#' character.</param>
public static void ShowHelp(string strTopic, string strSection)
{
AppHelp.ShowHelp(strTopic, strSection, false);
}
/// <summary>
/// Show a help page.
/// </summary>
/// <param name="strTopic">Topic name. May be <c>null</c>.</param>
/// <param name="strSection">Section name. May be <c>null</c>.
/// Must not start with the '#' character.</param>
/// <param name="bPreferLocal">Specify if the local help file should be
/// preferred. If no local help file is available, the online help
/// system will be used, independent of the <c>bPreferLocal</c> flag.</param>
public static void ShowHelp(string strTopic, string strSection, bool bPreferLocal)
{
if(AppHelp.LocalHelpAvailable)
{
if(bPreferLocal || (AppHelp.PreferredHelpSource == AppHelpSource.Local))
AppHelp.ShowHelpLocal(strTopic, strSection);
else
AppHelp.ShowHelpOnline(strTopic, strSection);
}
else AppHelp.ShowHelpOnline(strTopic, strSection);
}
private static void ShowHelpLocal(string strTopic, string strSection)
{
string strFile = AppHelp.LocalHelpFile;
if(string.IsNullOrEmpty(strFile)) { Debug.Assert(false); return; }
string strCmd = "/usr/share/doc/keepass2/Chm/help/";
if(!string.IsNullOrEmpty(strTopic))
{
strCmd += strTopic + ".html";
if(!string.IsNullOrEmpty(strSection))
strCmd += "#" + strSection;
}
else
{
strCmd += "../index.html";
}
try { Process.Start("x-www-browser", strCmd); }
catch(Exception exStart)
{
MessageService.ShowWarning("x-www-browser " + strCmd, exStart);
}
}
private static bool ShowHelpLocalKcv(string strQuotedMsIts)
{
try
{
if(!NativeLib.IsUnix()) return false;
string strApp = AppLocator.FindAppUnix("kchmviewer");
if(string.IsNullOrEmpty(strApp)) return false;
string strFile = StrUtil.GetStringBetween(strQuotedMsIts, 0, ":", "::");
if(string.IsNullOrEmpty(strFile))
strFile = StrUtil.GetStringBetween(strQuotedMsIts, 0, ":", "\"");
if(string.IsNullOrEmpty(strFile))
{
Debug.Assert(false);
return false;
}
string strUrl = StrUtil.GetStringBetween(strQuotedMsIts, 0, "::", "\"");
// https://www.ulduzsoft.com/linux/kchmviewer/kchmviewer-integration-reference/
string strArgs = "\"" + SprEncoding.EncodeForCommandLine(strFile) + "\"";
if(!string.IsNullOrEmpty(strUrl))
strArgs = "-showPage \"" + SprEncoding.EncodeForCommandLine(
strUrl) + "\" " + strArgs;
NativeLib.StartProcess(strApp, strArgs);
return true;
}
catch(Exception) { Debug.Assert(false); }
return false;
}
private static void ShowHelpOnline(string strTopic, string strSection)
{
string strUrl = GetOnlineUrl(strTopic, strSection);
WinUtil.OpenUrl(strUrl, null);
}
internal static string GetOnlineUrl(string strTopic, string strSection)
{
string str = PwDefs.HelpUrl;
if(!string.IsNullOrEmpty(strTopic))
{
str += strTopic + ".html";
if(!string.IsNullOrEmpty(strSection))
str += "#" + strSection;
}
return str;
}
}
}
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