* Adding generic HttpServer to OpenMetaverse.Capabilites

* LoginResponseData can now serialize to XmlRpc
* Adding new Simian project, ultra-lightweight simulator for testing and development
* Shuffling OpenMetaverse.Capabilities around a bit in preparation for CAPS server implementation

git-svn-id: http://libopenmetaverse.googlecode.com/svn/trunk@2094 52acb1d6-8a22-11de-b505-999d5b087335

OpenMetaverse/Capabilities/HttpRequestSignature.cs

@@ -0,0 +1,172 @@
+/*
+ * Copyright (c) 2008, openmetaverse.org
+ * All rights reserved.
+ *
+ * - 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.
+ * - Neither the name of the openmetaverse.org 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 COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER OR 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.Net;
+using System.Text.RegularExpressions;
+
+namespace OpenMetaverse.Capabilities
+{
+    /// <summary>
+    /// Used to match incoming HTTP requests against registered handlers.
+    /// Matches based on any combination of HTTP Method, Content-Type header,
+    /// and URL path. URL path matching supports the * wildcard character
+    /// </summary>
+    public struct HttpRequestSignature : IEquatable<HttpRequestSignature>
+    {
+        private string method;
+        private string contentType;
+        private string path;
+        private bool pathIsWildcard;
+
+        public string Method
+        {
+            get { return method; }
+            set
+            {
+                if (!String.IsNullOrEmpty(value)) method = value.ToLower();
+                else method = String.Empty;
+            }
+        }
+        public string ContentType
+        {
+            get { return contentType; }
+            set
+            {
+                if (!String.IsNullOrEmpty(value)) contentType = value.ToLower();
+                else contentType = String.Empty;
+            }
+        }
+        public string Path
+        {
+            get { return path; }
+            set
+            {
+                pathIsWildcard = false;
+
+                if (!String.IsNullOrEmpty(value))
+                {
+                    // Regex to tear apart URLs, used to extract just a URL
+                    // path from any data we're given
+                    string regexPattern =
+                        @"^(?<s1>(?<s0>[^:/\?#]+):)?(?<a1>"
+                      + @"//(?<a0>[^/\?#]*))?(?<p0>[^\?#]*)"
+                      + @"(?<q1>\?(?<q0>[^#]*))?"
+                      + @"(?<f1>#(?<f0>.*))?";
+                    Regex re = new Regex(regexPattern, RegexOptions.ExplicitCapture);
+                    Match m = re.Match(value);
+                    string newPath = m.Groups["p0"].Value.ToLower();
+
+                    // Remove any trailing forward-slashes
+                    if (newPath.EndsWith("/"))
+                        newPath = newPath.Substring(0, newPath.Length - 1);
+
+                    // Check if this path contains a wildcard. If so, convert it to a regular expression
+                    if (newPath.Contains("*"))
+                    {
+                        pathIsWildcard = true;
+                        newPath = String.Format("^{0}$", newPath.Replace("\\*", ".*"));
+                    }
+
+                    path = newPath;
+                }
+                else
+                {
+                    path = String.Empty;
+                }
+            }
+        }
+        public bool PathIsWildcard
+        {
+            get { return pathIsWildcard; }
+        }
+
+        public HttpRequestSignature(HttpListenerContext context)
+        {
+            method = contentType = path = String.Empty;
+            pathIsWildcard = false;
+
+            Method = context.Request.HttpMethod;
+            ContentType = context.Request.ContentType;
+            Path = context.Request.RawUrl;
+        }
+
+        public bool ExactlyEquals(HttpRequestSignature signature)
+        {
+            return (method.Equals(signature.Method) && contentType.Equals(signature.ContentType) && path.Equals(signature.Path));
+        }
+
+        public override bool Equals(object obj)
+        {
+            return (obj is HttpRequestSignature) ? this == (HttpRequestSignature)obj : false;
+        }
+
+        public bool Equals(HttpRequestSignature signature)
+        {
+            return (this == signature);
+        }
+
+        public override int GetHashCode()
+        {
+            int hash = (method != null) ? method.GetHashCode() : 0;
+            hash ^= (contentType != null) ? contentType.GetHashCode() : 0;
+            hash ^= (path != null) ? path.GetHashCode() : 0;
+            return hash;
+        }
+
+        public static bool operator ==(HttpRequestSignature lhs, HttpRequestSignature rhs)
+        {
+            bool methodMatch = (String.IsNullOrEmpty(lhs.Method) || String.IsNullOrEmpty(rhs.Method) || lhs.Method.Equals(rhs.Method));
+            bool contentTypeMatch = (String.IsNullOrEmpty(lhs.ContentType) || String.IsNullOrEmpty(rhs.ContentType) || lhs.ContentType.Equals(rhs.ContentType));
+            bool pathMatch = false;
+
+            if (methodMatch && contentTypeMatch)
+            {
+                if (!String.IsNullOrEmpty(lhs.Path) && !String.IsNullOrEmpty(rhs.Path))
+                {
+                    // Do wildcard matching if there is any to be done
+                    if (lhs.PathIsWildcard)
+                        pathMatch = Regex.IsMatch(rhs.Path, lhs.Path);
+                    else if (rhs.PathIsWildcard)
+                        pathMatch = Regex.IsMatch(lhs.Path, rhs.Path);
+                    else
+                        pathMatch = lhs.Path.Equals(rhs.Path);
+                }
+                else
+                {
+                    pathMatch = true;
+                }
+            }
+
+            return (methodMatch && contentTypeMatch && pathMatch);
+        }
+
+        public static bool operator !=(HttpRequestSignature lhs, HttpRequestSignature rhs)
+        {
+            return !(lhs == rhs);
+        }
+    }
+}