1 files changed, 117 insertions, 0 deletions

diff --git a/OpenSim/Framework/MultipartForm.cs b/OpenSim/Framework/MultipartForm.cs
new file mode 100644
index 0000000..8ba6d22
--- /dev/null
+++ b/OpenSim/Framework/MultipartForm.cs
@@ -0,0 +1,117 @@
+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;
+        }
+    }
+}