/* * Copyright (c) Contributors, http://opensimulator.org/ * See CONTRIBUTORS.TXT for a full list of copyright holders. * * 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 OpenSimulator Project 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 DEVELOPERS ``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 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 System; using System.Collections.Generic; using System.Net; using System.IO; using System.Text; namespace OpenSim.Framework { public static class MultipartForm { #region Helper Classes public abstract class Element { public string Name; } public class File : Element { public string Filename; public string ContentType; public byte[] Data; public File(string name, string filename, string contentType, byte[] data) { Name = name; Filename = filename; ContentType = contentType; Data = data; } } public class Parameter : Element { public string Value; public Parameter(string name, string value) { Name = name; Value = value; } } #endregion Helper Classes public static HttpWebResponse Post(HttpWebRequest request, List<Element> postParameters) { string boundary = Boundary(); // Set up the request properties request.Method = "POST"; request.ContentType = "multipart/form-data; boundary=" + boundary; #region Stream Writing using (MemoryStream formDataStream = new MemoryStream()) { foreach (var param in postParameters) { if (param is File) { File file = (File)param; // Add just the first part of this param, since we will write the file data directly to the Stream string header = string.Format("--{0}\r\nContent-Disposition: form-data; name=\"{1}\"; filename=\"{2}\";\r\nContent-Type: {3}\r\n\r\n", boundary, file.Name, !String.IsNullOrEmpty(file.Filename) ? file.Filename : "tempfile", file.ContentType); formDataStream.Write(Encoding.UTF8.GetBytes(header), 0, header.Length); formDataStream.Write(file.Data, 0, file.Data.Length); } else { Parameter parameter = (Parameter)param; string postData = string.Format("--{0}\r\nContent-Disposition: form-data; name=\"{1}\"\r\n\r\n{2}\r\n", boundary, parameter.Name, parameter.Value); formDataStream.Write(Encoding.UTF8.GetBytes(postData), 0, postData.Length); } } // Add the end of the request byte[] footer = Encoding.UTF8.GetBytes("\r\n--" + boundary + "--\r\n"); formDataStream.Write(footer, 0, footer.Length); request.ContentLength = formDataStream.Length; // Copy the temporary stream to the network stream formDataStream.Seek(0, SeekOrigin.Begin); using (Stream requestStream = request.GetRequestStream()) formDataStream.CopyTo(requestStream, (int)formDataStream.Length); } #endregion Stream Writing return request.GetResponse() as HttpWebResponse; } private static string Boundary() { Random rnd = new Random(); string formDataBoundary = String.Empty; while (formDataBoundary.Length < 15) formDataBoundary = formDataBoundary + rnd.Next(); formDataBoundary = formDataBoundary.Substring(0, 15); formDataBoundary = "-----------------------------" + formDataBoundary; return formDataBoundary; } } }