DocumentServer/OnlineEditorsExample/WebEditor.ashx.cs
2015-04-29 19:10:50 +03:00

215 lines
7.3 KiB
C#

using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Web;
using System.Web.Script.Serialization;
using System.Web.Services;
using ASC.Api.DocumentConverter;
namespace OnlineEditorsExample
{
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
public class WebEditor : IHttpHandler
{
public void ProcessRequest(HttpContext context)
{
switch (context.Request["type"])
{
case "save":
Save(context);
break;
case "upload":
Upload(context);
break;
case "convert":
Convert(context);
break;
case "track":
Track(context);
break;
}
}
private static void Save(HttpContext context)
{
context.Response.ContentType = "text/plain";
var downloadUri = context.Request["fileuri"];
var fileName = context.Request["filename"];
if (string.IsNullOrEmpty(downloadUri) || string.IsNullOrEmpty(fileName))
{
context.Response.Write("error");
return;
}
var newType = Path.GetExtension(downloadUri).Trim('.');
var currentType = (context.Request["filetype"] ?? Path.GetExtension(fileName)).Trim('.');
if (newType.ToLower() != currentType.ToLower())
{
var key = ServiceConverter.GenerateRevisionId(downloadUri);
string newFileUri;
try
{
var result = ServiceConverter.GetConvertedUri(downloadUri, newType, currentType, key, false, out newFileUri);
if (result != 100)
throw new Exception();
}
catch (Exception)
{
context.Response.Write("error");
return;
}
downloadUri = newFileUri;
newType = currentType;
}
fileName = Path.GetFileNameWithoutExtension(fileName) + "." + newType;
var req = (HttpWebRequest)WebRequest.Create(downloadUri);
// hack. http://ubuntuforums.org/showthread.php?t=1841740
if (_Default.IsMono)
{
ServicePointManager.ServerCertificateValidationCallback += (s, ce, ca, p) => true;
}
try
{
using (var stream = req.GetResponse().GetResponseStream())
{
if (stream == null) throw new Exception("stream is null");
const int bufferSize = 4096;
using (var fs = File.Open(_Default.StoragePath(fileName, null), FileMode.Create))
{
var buffer = new byte[bufferSize];
int readed;
while ((readed = stream.Read(buffer, 0, bufferSize)) != 0)
{
fs.Write(buffer, 0, readed);
}
}
}
}
catch (Exception)
{
context.Response.Write("error");
return;
}
context.Response.Write("success");
}
private static void Upload(HttpContext context)
{
context.Response.ContentType = "text/plain";
try
{
context.Response.Write("{ \"filename\": \"" + _Default.DoUpload(context) + "\"}");
}
catch (Exception e)
{
context.Response.Write("{ \"error\": \"" + e.Message + "\"}");
}
}
private static void Convert(HttpContext context)
{
context.Response.ContentType = "text/plain";
try
{
context.Response.Write(_Default.DoConvert(context));
}
catch (Exception e)
{
context.Response.Write("{ \"error\": \"" + e.Message + "\"}");
}
}
private enum TrackerStatus
{
NotFound = 0,
Editing = 1,
MustSave = 2,
Corrupted = 3,
Closed = 4,
}
private static void Track(HttpContext context)
{
var userAddress = context.Request["userAddress"];
var fileName = context.Request["fileName"];
var storagePath = _Default.StoragePath(fileName, userAddress);
string body;
try
{
using (var receiveStream = context.Request.InputStream)
using (var readStream = new StreamReader(receiveStream))
{
body = readStream.ReadToEnd();
}
}
catch (Exception e)
{
throw new HttpException((int) HttpStatusCode.BadRequest, e.Message);
}
var jss = new JavaScriptSerializer();
if (string.IsNullOrEmpty(body)) return;
var fileData = jss.Deserialize<Dictionary<string, object>>(body);
var status = (TrackerStatus) (int) fileData["status"];
switch (status)
{
case TrackerStatus.MustSave:
case TrackerStatus.Corrupted:
var downloadUri = (string) fileData["url"];
var req = (HttpWebRequest) WebRequest.Create(downloadUri);
// hack. http://ubuntuforums.org/showthread.php?t=1841740
if (_Default.IsMono)
{
ServicePointManager.ServerCertificateValidationCallback += (s, ce, ca, p) => true;
}
var saved = 1;
try
{
using (var stream = req.GetResponse().GetResponseStream())
{
if (stream == null) throw new Exception("stream is null");
const int bufferSize = 4096;
using (var fs = File.Open(storagePath, FileMode.Create))
{
var buffer = new byte[bufferSize];
int readed;
while ((readed = stream.Read(buffer, 0, bufferSize)) != 0)
{
fs.Write(buffer, 0, readed);
}
}
}
}
catch (Exception)
{
saved = 0;
}
context.Response.Write(string.Format("{{\"c\":\"saved\",\"status\":{0}}}", saved));
break;
}
}
public bool IsReusable
{
get { return false; }
}
}
}