282 lines
12 KiB
C#
282 lines
12 KiB
C#
/*
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* (c) Copyright Ascensio System SIA 2010-2014
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*
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* This program is a free software product. You can redistribute it and/or
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* modify it under the terms of the GNU Affero General Public License (AGPL)
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* version 3 as published by the Free Software Foundation. In accordance with
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* Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
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* that Ascensio System SIA expressly excludes the warranty of non-infringement
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* of any third-party rights.
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*
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* This program is distributed WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For
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* details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
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*
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* You can contact Ascensio System SIA at Lubanas st. 125a-25, Riga, Latvia,
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* EU, LV-1021.
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*
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* The interactive user interfaces in modified source and object code versions
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* of the Program must display Appropriate Legal Notices, as required under
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* Section 5 of the GNU AGPL version 3.
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*
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* Pursuant to Section 7(b) of the License you must retain the original Product
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* logo when distributing the program. Pursuant to Section 7(e) we decline to
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* grant you any rights under trademark law for use of our trademarks.
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*
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* All the Product's GUI elements, including illustrations and icon sets, as
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* well as technical writing content are licensed under the terms of the
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* Creative Commons Attribution-ShareAlike 4.0 International. See the License
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* terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
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*
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*/
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using System;
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using System.Net;
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using System.Configuration;
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using System.Web;
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using System.Web.Routing;
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using System.IO;
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using System.Text;
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using Microsoft.Win32;
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using FileConverterUtils2;
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using log4net;
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public class FontServiceRoute : IRouteHandler
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{
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public IHttpHandler GetHttpHandler(RequestContext requestContext)
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{
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return new FontService(requestContext);
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}
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}
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public class FontService : IHttpAsyncHandler
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{
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private readonly ILog _log = LogManager.GetLogger(typeof(FontServiceRoute));
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private string m_sFontName = null;
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private readonly static System.Collections.Generic.Dictionary<string, string> m_mapFontNameToFullPath;
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static FontService()
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{
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m_mapFontNameToFullPath = new System.Collections.Generic.Dictionary<string, string>();
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DirectoryInfo dirWindowsFolder = Directory.GetParent(Environment.GetFolderPath(Environment.SpecialFolder.System));
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string sWinFontDir = Path.Combine(dirWindowsFolder.FullName, "Fonts");
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RegistryKey key = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\Windows NT\CurrentVersion\Fonts");
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if (null == key)
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key = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Fonts");
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if (null != key)
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{
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string[] aValues = key.GetValueNames();
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for (int i = 0, length = aValues.Length; i < length; i++)
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{
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string sCurPath = key.GetValue(aValues[i]) as string;
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if (null != sCurPath && !string.IsNullOrEmpty(sCurPath))
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{
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if (Path.IsPathRooted(sCurPath))
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m_mapFontNameToFullPath[Path.GetFileName(sCurPath).ToUpper()] = sCurPath;
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else
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m_mapFontNameToFullPath[sCurPath.ToUpper()] = Path.Combine(sWinFontDir, sCurPath);
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}
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}
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}
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}
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public FontService(RequestContext context)
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{
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m_sFontName = Convert.ToString(context.RouteData.Values["fontname"]);
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}
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public IAsyncResult BeginProcessRequest(HttpContext context, AsyncCallback cb, Object extraData)
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{
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bool bStartAsync = false;
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try
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{
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_log.Info("Starting process request...");
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_log.Info("fontname: " + m_sFontName);
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context.Response.Clear();
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context.Response.Cache.SetExpires(DateTime.Now);
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context.Response.Cache.SetCacheability(HttpCacheability.Public);
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context.Response.ContentType = Utils.GetMimeType(m_sFontName);
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if (context.Request.ServerVariables.Get("HTTP_USER_AGENT").Contains("MSIE"))
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context.Response.AppendHeader("Content-Disposition", "attachment; filename=\"" + context.Server.UrlEncode(m_sFontName) + "\"");
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else
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context.Response.AppendHeader("Content-Disposition", "attachment; filename=\"" + m_sFontName + "\"");
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string sConfigFontDir = ConfigurationManager.AppSettings["utils.common.fontdir"];
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string strFilepath;
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if (null != sConfigFontDir && string.Empty != sConfigFontDir)
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strFilepath = Path.Combine(Environment.ExpandEnvironmentVariables(sConfigFontDir), m_sFontName);
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else
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m_mapFontNameToFullPath.TryGetValue(m_sFontName.ToUpper(), out strFilepath);
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if (".js" == Path.GetExtension(m_sFontName))
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{
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string[] aFontExts = {".ttf", ".ttc", ".otf"};
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for(int i = 0; i < aFontExts.Length; i++)
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{
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strFilepath = Path.ChangeExtension(strFilepath, aFontExts[i]);
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if (File.Exists(strFilepath))
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break;
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}
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}
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FileInfo oFileInfo = new FileInfo(strFilepath);
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if (oFileInfo.Exists)
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{
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DateTime oLastModified = oFileInfo.LastWriteTimeUtc;
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string sETag = oLastModified.Ticks.ToString("x");
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DateTime oDateTimeUtcNow = DateTime.UtcNow;
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if (oLastModified.CompareTo(oDateTimeUtcNow) > 0)
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{
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_log.DebugFormat("LastModifiedTimeStamp changed from {0} to {1}", oLastModified, oDateTimeUtcNow);
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oLastModified = oDateTimeUtcNow;
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}
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string sRequestIfModifiedSince = context.Request.Headers["If-Modified-Since"];
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string sRequestETag = context.Request.Headers["If-None-Match"];
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bool bNoModify = false;
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if (false == string.IsNullOrEmpty(sRequestETag) || false == string.IsNullOrEmpty(sRequestIfModifiedSince))
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{
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bool bRequestETag = true;
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if (false == string.IsNullOrEmpty(sRequestETag) && sRequestETag != sETag)
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bRequestETag = false;
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bool bRequestIfModifiedSince = true;
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if (false == string.IsNullOrEmpty(sRequestIfModifiedSince))
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{
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try
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{
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DateTime oRequestIfModifiedSince = DateTime.ParseExact(sRequestIfModifiedSince, "R", System.Globalization.CultureInfo.InvariantCulture);
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if ((oRequestIfModifiedSince - oLastModified).TotalSeconds > 1)
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bRequestIfModifiedSince = false;
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}
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catch
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{
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bRequestIfModifiedSince = false;
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}
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}
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if (bRequestETag && bRequestIfModifiedSince)
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{
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context.Response.StatusCode = (int)HttpStatusCode.NotModified;
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bNoModify = true;
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}
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}
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if (false == bNoModify)
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{
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context.Response.Cache.SetETag(sETag);
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context.Response.Cache.SetLastModified(oLastModified);
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FileStream oFileStreamInput = new FileStream(strFilepath, FileMode.Open, FileAccess.Read, FileShare.Read, (int)oFileInfo.Length, true);
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byte[] aBuffer = new byte[oFileStreamInput.Length];
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TransportClass oTransportClass = new TransportClass(context, cb, oFileStreamInput, aBuffer);
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oFileStreamInput.BeginRead(aBuffer, 0, aBuffer.Length, ReadFileCallback, oTransportClass);
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bStartAsync = true;
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}
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}
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else
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context.Response.StatusCode = (int)HttpStatusCode.BadRequest;
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}
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catch(Exception e)
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{
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context.Response.StatusCode = (int)HttpStatusCode.BadRequest;
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_log.Error(context.Request.Params.ToString());
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_log.Error("Exeption catched in BeginProcessRequest:", e);
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}
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TransportClass oTempTransportClass = new TransportClass(context, cb, null, null);
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if (false == bStartAsync)
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cb(new AsyncOperationData(oTempTransportClass));
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return new AsyncOperationData(oTempTransportClass);
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}
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public void EndProcessRequest(IAsyncResult result)
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{
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}
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public void ProcessRequest(HttpContext context)
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{
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throw new InvalidOperationException();
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}
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public bool IsReusable
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{
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get
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{
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return false;
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}
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}
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private void ReadFileCallback(IAsyncResult result)
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{
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TransportClass oTransportClass = result.AsyncState as TransportClass;
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HttpContext context = oTransportClass.m_oContext;
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try
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{
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FileStream oFileStreamInput = oTransportClass.m_oFileStreamInput;
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oTransportClass.nReadWriteBytes = oFileStreamInput.EndRead(result);
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oFileStreamInput.Dispose();
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if (oTransportClass.nReadWriteBytes <= 0)
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{
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context.Response.StatusCode = (int)HttpStatusCode.BadRequest;
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oTransportClass.m_oCallback(new AsyncOperationData(oTransportClass));
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}
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else
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{
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byte[] aOutput = null;
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if (".js" == Path.GetExtension(m_sFontName))
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{
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aOutput = GetJsContent(oTransportClass.m_aBuffer);
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oTransportClass.nReadWriteBytes = aOutput.Length;
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}
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else
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aOutput = oTransportClass.m_aBuffer;
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context.Response.OutputStream.BeginWrite(aOutput, 0, aOutput.Length, WriteBufferCallback, oTransportClass);
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}
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}
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catch (Exception e)
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{
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context.Response.StatusCode = (int)HttpStatusCode.BadRequest;
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oTransportClass.m_oCallback(new AsyncOperationData(oTransportClass));
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_log.Error("Exception catched in ReadFileCallback:", e);
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}
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}
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private void WriteBufferCallback(IAsyncResult result)
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{
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TransportClass oTransportClass = result.AsyncState as TransportClass;
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HttpContext context = oTransportClass.m_oContext;
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try
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{
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context.Response.OutputStream.EndWrite(result);
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context.Response.AddHeader("Content-Length", oTransportClass.nReadWriteBytes.ToString());
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context.Response.StatusCode = (int)HttpStatusCode.OK;
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context.Response.Flush();
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context.Response.End();
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oTransportClass.m_oCallback(new AsyncOperationData(oTransportClass));
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}
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catch (Exception e)
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{
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context.Response.StatusCode = (int)HttpStatusCode.BadRequest;
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oTransportClass.m_oCallback(new AsyncOperationData(oTransportClass));
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_log.Error("Exception catched in WriteBufferCallback:", e);
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}
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}
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private byte[] GetJsContent(byte[] aBuffer)
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{
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string data = Convert.ToBase64String(aBuffer);
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string sRes = string.Format("var __font_data1=\"{0}\";var __font_data1_idx = g_fonts_streams.length;g_fonts_streams[__font_data1_idx] = CreateFontData2(__font_data1,{1});__font_data1 = null;g_font_files[1].SetStreamIndex(__font_data1_idx);", data, aBuffer.Length);
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return Encoding.UTF8.GetBytes(sRes);
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}
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private class TransportClass
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{
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public HttpContext m_oContext;
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public AsyncCallback m_oCallback;
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public FileStream m_oFileStreamInput;
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public byte[] m_aBuffer;
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public int nReadWriteBytes;
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public TransportClass(HttpContext oContext, AsyncCallback oCallback, FileStream oFileStreamInput, byte[] aBuffer)
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{
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m_oContext = oContext;
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m_oCallback = oCallback;
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m_oFileStreamInput = oFileStreamInput;
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m_aBuffer = aBuffer;
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}
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}
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} |