350 lines
12 KiB
C#
350 lines
12 KiB
C#
using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Net;
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using System.Text.RegularExpressions;
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using System.Web;
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using System.Web.Caching;
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using System.Web.Configuration;
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using System.Web.UI;
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using ASC.Api.DocumentConverter;
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namespace OnlineEditorsExample
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{
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internal static class FileType
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{
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public static readonly List<string> ExtsSpreadsheet = new List<string>
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{
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".xls", ".xlsx",
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".ods", ".csv"
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};
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public static readonly List<string> ExtsPresentation = new List<string>
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{
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".pps", ".ppsx",
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".ppt", ".pptx",
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".odp"
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};
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public static readonly List<string> ExtsDocument = new List<string>
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{
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".docx", ".doc", ".odt", ".rtf", ".txt",
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".html", ".htm", ".mht", ".pdf", ".djvu",
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".fb2", ".epub", ".xps"
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};
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public static string GetInternalExtension(string extension)
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{
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extension = Path.GetExtension(extension).ToLower();
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if (ExtsDocument.Contains(extension)) return ".docx";
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if (ExtsSpreadsheet.Contains(extension)) return ".xlsx";
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if (ExtsPresentation.Contains(extension)) return ".pptx";
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return string.Empty;
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}
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}
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public partial class _Default : Page
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{
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public static string VirtualPath
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{
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get
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{
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return
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HttpRuntime.AppDomainAppVirtualPath
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+ (HttpRuntime.AppDomainAppVirtualPath.EndsWith("/") ? "" : "/")
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+ WebConfigurationManager.AppSettings["storage-path"]
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+ CurUserHostAddress(null) + "/";
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}
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}
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private static bool? _ismono;
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public static bool IsMono
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{
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get
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{
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return _ismono.HasValue ? _ismono.Value : (_ismono = (bool?)(Type.GetType("Mono.Runtime") != null)).Value;
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}
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}
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private static long MaxFileSize
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{
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get
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{
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long size;
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long.TryParse(WebConfigurationManager.AppSettings["filesize-max"], out size);
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return size > 0 ? size : 5*1024*1024;
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}
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}
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private static List<string> FileExts
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{
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get { return ViewedExts.Concat(EditedExts).Concat(ConvertExts).ToList(); }
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}
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private static List<string> ViewedExts
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{
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get { return (WebConfigurationManager.AppSettings["files.docservice.viewed-docs"] ?? "").Split(new char[] { '|', ',' }, StringSplitOptions.RemoveEmptyEntries).ToList(); }
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}
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public static List<string> EditedExts
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{
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get { return (WebConfigurationManager.AppSettings["files.docservice.edited-docs"] ?? "").Split(new char[] { '|', ',' }, StringSplitOptions.RemoveEmptyEntries).ToList(); }
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}
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public static List<string> ConvertExts
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{
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get { return (WebConfigurationManager.AppSettings["files.docservice.convert-docs"] ?? "").Split(new char[] { '|', ',' }, StringSplitOptions.RemoveEmptyEntries).ToList(); }
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}
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public static bool EditMode
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{
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get { return (WebConfigurationManager.AppSettings["mode"] ?? "") != "view"; }
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}
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private static string _fileName;
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public static string CurUserHostAddress(string userAddress)
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{
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return Regex.Replace(userAddress ?? HttpContext.Current.Request.UserHostAddress, "[^0-9a-zA-Z.=]", "_");
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}
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public static string StoragePath(string fileName, string userAddress)
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{
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var directory = HttpRuntime.AppDomainAppPath + WebConfigurationManager.AppSettings["storage-path"] + CurUserHostAddress(userAddress) + "\\";
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if (!Directory.Exists(directory))
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{
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Directory.CreateDirectory(directory);
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}
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return directory + fileName;
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}
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public static string FileUri(string fileName)
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{
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var uri = new UriBuilder(HttpContext.Current.Request.Url)
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{
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Path = VirtualPath + fileName,
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Query = ""
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};
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if (HaveExternalIP())
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{
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return uri.ToString();
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}
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return GetExternalUri(uri.ToString());
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}
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protected string UrlPreloadScripts = WebConfigurationManager.AppSettings["files.docservice.url.preloader"];
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protected void Page_Load(object sender, EventArgs e)
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{
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}
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public static string DoUpload(HttpContext context)
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{
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var httpPostedFile = context.Request.Files[0];
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if (HttpContext.Current.Request.Browser.Browser.ToUpper() == "IE")
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{
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var files = httpPostedFile.FileName.Split(new char[] { '\\' });
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_fileName = files[files.Length - 1];
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}
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else
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{
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_fileName = httpPostedFile.FileName;
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}
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var curSize = httpPostedFile.ContentLength;
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if (MaxFileSize < curSize || curSize <= 0)
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{
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throw new Exception("File size is incorrect");
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}
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var curExt = (Path.GetExtension(_fileName) ?? "").ToLower();
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if (!FileExts.Contains(curExt))
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{
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throw new Exception("File type is not supported");
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}
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_fileName = GetCorrectName(_fileName);
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var savedFileName = StoragePath(_fileName, null);
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httpPostedFile.SaveAs(savedFileName);
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return _fileName;
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}
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public static string DoUpload(string fileUri)
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{
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_fileName = GetCorrectName(Path.GetFileName(fileUri));
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var curExt = (Path.GetExtension(_fileName) ?? "").ToLower();
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if (!FileExts.Contains(curExt))
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{
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throw new Exception("File type is not supported");
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}
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var req = (HttpWebRequest)WebRequest.Create(fileUri);
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try
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{
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// hack. http://ubuntuforums.org/showthread.php?t=1841740
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if (IsMono)
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{
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ServicePointManager.ServerCertificateValidationCallback += (s, ce, ca, p) => true;
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}
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using (var stream = req.GetResponse().GetResponseStream())
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{
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if (stream == null) throw new Exception("stream is null");
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const int bufferSize = 4096;
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using (var fs = File.Open(StoragePath(_fileName, null), FileMode.Create))
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{
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var buffer = new byte[bufferSize];
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int readed;
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while ((readed = stream.Read(buffer, 0, bufferSize)) != 0)
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{
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fs.Write(buffer, 0, readed);
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}
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}
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}
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}
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catch (Exception)
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{
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}
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return _fileName;
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}
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public static string DoConvert(HttpContext context)
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{
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_fileName = context.Request["filename"];
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var extension = (Path.GetExtension(_fileName) ?? "").Trim('.');
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var internalExtension = FileType.GetInternalExtension(_fileName).Trim('.');
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if (ConvertExts.Contains("." + extension)
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&& !string.IsNullOrEmpty(internalExtension))
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{
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var key = ServiceConverter.GenerateRevisionId(FileUri(_fileName));
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string newFileUri;
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var result = ServiceConverter.GetConvertedUri(FileUri(_fileName), extension, internalExtension, key, true, out newFileUri);
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if (result != 100)
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{
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return "{ \"step\" : \"" + result + "\", \"filename\" : \"" + _fileName + "\"}";
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}
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var fileName = GetCorrectName(Path.GetFileNameWithoutExtension(_fileName) + "." + internalExtension);
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var req = (HttpWebRequest)WebRequest.Create(newFileUri);
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// hack. http://ubuntuforums.org/showthread.php?t=1841740
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if (IsMono)
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{
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ServicePointManager.ServerCertificateValidationCallback += (s, ce, ca, p) => true;
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}
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using (var stream = req.GetResponse().GetResponseStream())
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{
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if (stream == null) throw new Exception("Stream is null");
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const int bufferSize = 4096;
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using (var fs = File.Open(StoragePath(fileName, null), FileMode.Create))
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{
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var buffer = new byte[bufferSize];
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int readed;
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while ((readed = stream.Read(buffer, 0, bufferSize)) != 0)
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{
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fs.Write(buffer, 0, readed);
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}
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}
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}
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File.Delete(StoragePath(_fileName, null));
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_fileName = fileName;
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}
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return "{ \"filename\" : \"" + _fileName + "\"}";
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}
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public static string GetCorrectName(string fileName)
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{
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var baseName = Path.GetFileNameWithoutExtension(fileName);
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var ext = Path.GetExtension(fileName);
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var name = baseName + ext;
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for (var i = 1; File.Exists(StoragePath(name, null)); i++)
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{
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name = baseName + " (" + i + ")" + ext;
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}
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return name;
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}
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private static bool? _haveExternalIP;
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public static bool HaveExternalIP()
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{
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if (!_haveExternalIP.HasValue)
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{
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string convertUri;
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try
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{
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var uri = new UriBuilder(HttpContext.Current.Request.Url)
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{
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Path = VirtualPath + "demo.docx",
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Query = ""
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};
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var fileUri = uri.ToString();
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ServiceConverter.GetConvertedUri(fileUri, "docx", "docx", Guid.NewGuid().ToString(), false, out convertUri);
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}
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catch
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{
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convertUri = string.Empty;
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}
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_haveExternalIP = !string.IsNullOrEmpty(convertUri);
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}
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return _haveExternalIP.Value;
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}
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public static string GetExternalUri(string localUri)
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{
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try
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{
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var uri = HttpRuntime.Cache.Get(localUri) as string;
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if (string.IsNullOrEmpty(uri))
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{
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var webRequest = (HttpWebRequest)WebRequest.Create(localUri);
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// hack. http://ubuntuforums.org/showthread.php?t=1841740
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if (IsMono)
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{
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ServicePointManager.ServerCertificateValidationCallback += (s, ce, ca, p) => true;
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}
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using (var response = webRequest.GetResponse())
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using (var responseStream = response.GetResponseStream())
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{
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var key = ServiceConverter.GenerateRevisionId(localUri);
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uri = ServiceConverter.GetExternalUri(responseStream, response.ContentLength, response.ContentType, key);
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}
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HttpRuntime.Cache.Remove(localUri);
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HttpRuntime.Cache.Insert(localUri, uri, null, DateTime.Now.Add(TimeSpan.FromMinutes(2)), Cache.NoSlidingExpiration);
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}
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return uri;
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}
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catch (Exception)
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{
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}
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return localUri;
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}
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}
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} |