mcs/class/Mainsoft.Web/Mainsoft.Web.AspnetConfig/aspnetconfig/UrlUtils.cs

   1 //
   2 // System.Web.UrlUtils.cs
   3 //
   4 // Authors:
   5 //      Gonzalo Paniagua (gonzalo@ximian.com)
   6 //      Jackson Harper   (jackson@ximian.com)
   7 //
   8
   9 //
  10 // Copyright (C) 2005 Novell, Inc (http://www.novell.com)
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 using System.Web.SessionState;\r
  33 using System.Web;\r
  34 using System;
  35
  36 namespace Mainsoft.Web.Util {
  37
  38         internal class UrlUtils {
  39
  40                 // appRoot + SessionID + vpath
  41                 internal static string InsertSessionId (string id, string path)
  42                 {
  43                         string dir = GetDirectory (path);
  44                         if (!dir.EndsWith ("/"))
  45                                 dir += "/";
  46
  47                         string appvpath = HttpRuntime.AppDomainAppVirtualPath;
  48                         if (!appvpath.EndsWith ("/"))
  49                                 appvpath += "/";
  50
  51                         if (path.StartsWith (appvpath))
  52                                 path = path.Substring (appvpath.Length);
  53
  54                         if (path [0] == '/')
  55                                 path = path.Length > 1 ? path.Substring (1) : "";
  56
  57                         return Canonic (appvpath + "(" + id + ")/" + path);
  58                 }
  59 #if false
  60                 internal static string GetSessionId (string path)
  61                 {
  62                         string appvpath = HttpRuntime.AppDomainAppVirtualPath;
  63                         if (path.Length <= appvpath.Length)
  64                                 return null;
  65
  66                         path = path.Substring (appvpath.Length);
  67                         if (path.Length == 0 || path [0] != '/')
  68                                 path = '/' + path;
  69
  70                         int len = path.Length;
  71                         if ((len < SessionId.IdLength + 3) || (path [1] != '(') ||
  72                             (path [SessionId.IdLength + 2] != ')'))
  73                                 return null;
  74
  75                         return path.Substring (2, SessionId.IdLength);
  76                 }
  77 #endif
  78                 internal static string RemoveSessionId (string base_path, string file_path)
  79                 {
  80                         // Caller did a GetSessionId first
  81                         int idx = base_path.IndexOf ("/(");
  82                         string dir = base_path.Substring (0, idx + 1);
  83                         if (!dir.EndsWith ("/"))
  84                                 dir += "/";
  85
  86                         idx = base_path.IndexOf (")/");
  87                         if (idx != -1 && base_path.Length > idx + 2) {
  88                                 string dir2 = base_path.Substring (idx + 2);
  89                                 if (!dir2.EndsWith ("/"))
  90                                         dir2 += "/";
  91
  92                                 dir += dir2;
  93                         }
  94
  95                         return Canonic (dir + GetFile (file_path));
  96                 }
  97
  98                 public static string Combine (string basePath, string relPath)
  99                 {
 100                         if (relPath == null)
 101                                 throw new ArgumentNullException ("relPath");
 102
 103                         int rlength = relPath.Length;
 104                         if (rlength == 0)
 105                                 return "";
 106
 107                         relPath = relPath.Replace ("\\", "/");
 108                         if (IsRooted (relPath))
 109                                 return Canonic (relPath);
 110
 111                         char first = relPath [0];
 112                         if (rlength < 3 || first == '~' || first == '/' || first == '\\') {
 113                                 if (basePath == null || (basePath.Length == 1 && basePath [0] == '/'))
 114                                         basePath = String.Empty;
 115
 116                                 string slash = (first == '/') ? "" : "/";
 117                                 if (first == '~') {
 118                                         if (rlength == 1) {
 119                                                 relPath = "";
 120                                         } else if (rlength > 1 && relPath [1] == '/') {
 121                                                 relPath = relPath.Substring (2);
 122                                                 slash = "/";
 123                                         }
 124
 125                                         string appvpath = HttpRuntime.AppDomainAppVirtualPath;
 126                                         if (appvpath.EndsWith ("/"))
 127                                                 slash = "";
 128
 129                                         return Canonic (appvpath + slash + relPath);
 130                                 }
 131
 132                                 return Canonic (basePath + slash + relPath);
 133                         }
 134
 135                         if (basePath == null || basePath == "" || basePath [0] == '~')
 136                                 basePath = HttpRuntime.AppDomainAppVirtualPath;
 137
 138                         if (basePath.Length <= 1)
 139                                 basePath = String.Empty;
 140
 141                         return Canonic (basePath + "/" + relPath);
 142                 }
 143
 144                 static char [] path_sep = {'\\', '/'};
 145
 146                 internal static string Canonic (string path)
 147                 {
 148                         string [] parts = path.Split (path_sep);
 149                         int end = parts.Length;
 150
 151                         int dest = 0;
 152
 153                         for (int i = 0; i < end; i++) {
 154                                 string current = parts [i];
 155                                 if (current == "." )
 156                                         continue;
 157
 158                                 if (current == "..") {
 159                                         if (dest == 0) {
 160                                                 if (i == 1) // see bug 52599
 161                                                         continue;
 162
 163                                                 throw new HttpException ("Invalid path.");
 164                                         }
 165
 166                                         dest --;
 167                                         continue;
 168                                 }
 169
 170                                 parts [dest++] = current;
 171                         }
 172
 173                         if (dest == 0)
 174                                 return "/";
 175
 176                         return String.Join ("/", parts, 0, dest);
 177                 }
 178
 179                 internal static string GetDirectory (string url)
 180                 {
 181                         url = url.Replace('\\','/');
 182                         int last = url.LastIndexOf ('/');
 183
 184                         if (last > 0) {
 185 #if NET_2_0
 186                                 return RemoveDoubleSlashes (url.Substring (0, last));
 187 #else
 188                                 return url.Substring (0, last);
 189 #endif
 190                         }
 191
 192                         return "/";
 193                 }
 194
 195 #if NET_2_0
 196                 internal static string RemoveDoubleSlashes (string input)
 197                 {
 198                         // MS VirtualPathUtility removes duplicate '/'
 199                         string str = input;
 200                         string x;
 201                         while ((x = str.Replace ("//", "/")) != str) {
 202                                 str = x;
 203                         }
 204
 205                         return str;
 206                 }
 207 #endif
 208
 209                 internal static string GetFile (string url)
 210                 {
 211                         url = url.Replace('\\','/');
 212                         int last = url.LastIndexOf ('/');
 213                         if (last >= 0) {
 214                                 if (url.Length == 1) // Empty file name instead of ArgumentOutOfRange
 215                                         return "";
 216                                 return url.Substring (last+1);
 217                         }
 218
 219                         throw new Exception (String.Format ("GetFile: `{0}' does not contain a /", url));
 220                 }
 221
 222                 internal static bool IsRooted (string path)
 223                 {
 224                         if (path == null || path == "")
 225                                 return true;
 226
 227                         char c = path [0];
 228                         if (c == '/' || c == '\\')
 229                                 return true;
 230
 231                         return false;
 232                 }
 233
 234                 internal static bool IsRelativeUrl (string path)
 235                 {
 236                         return (path [0] != '/' && path.IndexOf (':') == -1);
 237                 }
 238
 239                 public static string ResolveVirtualPathFromAppAbsolute (string path)
 240                 {
 241                         if (path [0] != '~') return path;
 242
 243                         if (path.Length == 1)
 244                                 return HttpRuntime.AppDomainAppVirtualPath;
 245
 246                         if (path [1] == '/' || path [1] == '\\') {
 247                                 string appPath = HttpRuntime.AppDomainAppVirtualPath;
 248                                 if (appPath.Length > 1)
 249                                         return appPath + "/" + path.Substring (2);
 250                                 return "/" + path.Substring (2);
 251                         }
 252                         return path;
 253                 }
 254
 255                 public static string ResolvePhysicalPathFromAppAbsolute (string path)
 256                 {
 257                         if (path [0] != '~') return path;
 258
 259                         if (path.Length == 1)
 260                                 return HttpRuntime.AppDomainAppPath;
 261
 262                         if (path [1] == '/' || path [1] == '\\') {
 263                                 string appPath = HttpRuntime.AppDomainAppPath;
 264                                 if (appPath.Length > 1)
 265                                         return appPath + "/" + path.Substring (2);
 266                                 return "/" + path.Substring (2);
 267                         }
 268                         return path;
 269                 }
 270         }
 271 }