2 // System.Web.UrlUtils.cs
5 // Gonzalo Paniagua (gonzalo@ximian.com)
6 // Jackson Harper (jackson@ximian.com)
10 // Copyright (C) 2005 Novell, Inc (http://www.novell.com)
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:
20 // The above copyright notice and this permission notice shall be
21 // included in all copies or substantial portions of the Software.
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.
32 using System.Web.SessionState;
34 namespace System.Web.Util {
43 // appRoot + SessionID + vpath
44 public static string InsertSessionId (string id, string path)
46 string dir = GetDirectory (path);
47 if (!dir.EndsWith ("/"))
50 string appvpath = HttpRuntime.AppDomainAppVirtualPath;
51 if (!appvpath.EndsWith ("/"))
54 if (path.StartsWith (appvpath))
55 path = path.Substring (appvpath.Length);
57 if (path.StartsWith("/"))
58 path = path.Length > 1 ? path.Substring (1) : "";
60 return Canonic (appvpath + "(" + id + ")/" + path);
63 public static string GetSessionId (string path)
71 string appvpath = HttpRuntime.AppDomainAppVirtualPath;
72 int appvpathlen = appvpath.Length;
74 if (path.Length <= appvpathlen)
77 path = path.Substring (appvpathlen);
79 int len = path.Length;
80 if (len == 0 || path [0] != '/') {
85 if ((len < SessionId.IdLength + 3) || (path [1] != '(') ||
86 (path [SessionId.IdLength + 2] != ')'))
89 return path.Substring (2, SessionId.IdLength);
93 public static bool HasSessionId (string path)
95 if (path == null || path.Length < 5)
98 return (StrUtils.StartsWith (path, "/(") && path.IndexOf (")/") > 2);
101 public static string RemoveSessionId (string base_path, string file_path)
103 // Caller did a GetSessionId first
104 int idx = base_path.IndexOf ("/(");
105 string dir = base_path.Substring (0, idx + 1);
106 if (!dir.EndsWith ("/"))
109 idx = base_path.IndexOf (")/");
110 if (idx != -1 && base_path.Length > idx + 2) {
111 string dir2 = base_path.Substring (idx + 2);
112 if (!dir2.EndsWith ("/"))
118 return Canonic (dir + GetFile (file_path));
121 public static string Combine (string basePath, string relPath)
124 throw new ArgumentNullException ("relPath");
126 int rlength = relPath.Length;
130 relPath = relPath.Replace ('\\', '/');
131 if (IsRooted (relPath))
132 return Canonic (relPath);
134 char first = relPath [0];
135 if (rlength < 3 || first == '~' || first == '/' || first == '\\') {
136 if (basePath == null || (basePath.Length == 1 && basePath [0] == '/'))
137 basePath = String.Empty;
139 string slash = (first == '/') ? "" : "/";
143 } else if (rlength > 1 && relPath [1] == '/') {
144 relPath = relPath.Substring (2);
148 string appvpath = HttpRuntime.AppDomainAppVirtualPath;
149 if (appvpath.EndsWith ("/"))
152 return Canonic (appvpath + slash + relPath);
155 return Canonic (basePath + slash + relPath);
158 if (basePath == null || basePath.Length == 0 || basePath [0] == '~')
159 basePath = HttpRuntime.AppDomainAppVirtualPath;
161 if (basePath.Length <= 1)
162 basePath = String.Empty;
164 return Canonic (basePath + "/" + relPath);
167 static char [] path_sep = {'\\', '/'};
169 public static string Canonic (string path)
171 bool isRooted = IsRooted(path);
172 bool endsWithSlash = path.EndsWith("/");
173 string [] parts = path.Split (path_sep);
174 int end = parts.Length;
178 for (int i = 0; i < end; i++) {
179 string current = parts [i];
181 if (current.Length == 0)
187 if (current == "..") {
193 throw new HttpException ("Invalid path.");
197 parts [dest++] = current;
200 throw new HttpException ("Invalid path.");
205 string str = String.Join ("/", parts, 0, dest);
206 str = RemoveDoubleSlashes (str);
215 public static string GetDirectory (string url)
217 url = url.Replace('\\','/');
218 int last = url.LastIndexOf ('/');
221 if (last < url.Length)
223 return RemoveDoubleSlashes (url.Substring (0, last));
229 public static string RemoveDoubleSlashes (string input)
231 // MS VirtualPathUtility removes duplicate '/'
234 for (int i = 1; i < input.Length; i++)
235 if (input [i] == '/' && input [i - 1] == '/') {
240 if (index == -1) // common case optimization
243 StringBuilder sb = new StringBuilder (input.Length);
244 sb.Append (input, 0, index);
246 for (int i = index; i < input.Length; i++) {
247 if (input [i] == '/') {
249 if (next < input.Length && input [next] == '/')
254 sb.Append (input [i]);
258 return sb.ToString ();
261 public static string GetFile (string url)
263 url = url.Replace('\\','/');
264 int last = url.LastIndexOf ('/');
266 if (url.Length == 1) // Empty file name instead of ArgumentOutOfRange
268 return url.Substring (last+1);
271 throw new ArgumentException (String.Format ("GetFile: `{0}' does not contain a /", url));
274 public static bool IsRooted (string path)
276 if (path == null || path.Length == 0)
280 if (c == '/' || c == '\\')
286 public static bool IsRelativeUrl (string path)
288 return (path [0] != '/' && path.IndexOf (':') == -1);
291 public static string ResolveVirtualPathFromAppAbsolute (string path)
293 if (path [0] != '~') return path;
295 if (path.Length == 1)
296 return HttpRuntime.AppDomainAppVirtualPath;
298 if (path [1] == '/' || path [1] == '\\') {
299 string appPath = HttpRuntime.AppDomainAppVirtualPath;
300 if (appPath.Length > 1)
301 return appPath + "/" + path.Substring (2);
302 return "/" + path.Substring (2);
307 public static string ResolvePhysicalPathFromAppAbsolute (string path)
309 if (path [0] != '~') return path;
311 if (path.Length == 1)
312 return HttpRuntime.AppDomainAppPath;
314 if (path [1] == '/' || path [1] == '\\') {
315 string appPath = HttpRuntime.AppDomainAppPath;
316 if (appPath.Length > 1)
317 return appPath + "/" + path.Substring (2);
318 return "/" + path.Substring (2);