// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
-#if NET_2_0
-
+using System.Collections.Specialized;
+using System.Web.Configuration;
using System.Web.Util;
+using System.Text;
+using Microsoft.Win32;
namespace System.Web {
public static class VirtualPathUtility
{
+ static bool monoSettingsVerifyCompatibility;
+ static bool runningOnWindows;
+
+ static VirtualPathUtility ()
+ {
+ try {
+ runningOnWindows = RuntimeHelpers.RunningOnWindows;
+ var monoSettings = WebConfigurationManager.GetWebApplicationSection ("system.web/monoSettings") as MonoSettingsSection;
+ if (monoSettings != null)
+ monoSettingsVerifyCompatibility = monoSettings.VerificationCompatibility != 1;
+ } catch {
+ // ignore
+ }
+ }
+
public static string AppendTrailingSlash (string virtualPath)
{
if (virtualPath == null)
public static string Combine (string basePath, string relativePath)
{
- if (basePath == null || basePath == "")
- throw new ArgumentNullException ("basePath");
-
- if (relativePath == null || relativePath == "")
- throw new ArgumentNullException ("relativePath");
-
- if (basePath [0] != '/')
- throw new ArgumentException ("basePath is not an absolute path", "basePath");
-
- if (relativePath [0] != '/')
- return "/" + relativePath;
-
- return UrlUtils.Combine (basePath, relativePath);
+ basePath = Normalize (basePath);
+
+ if (IsRooted (relativePath))
+ return Normalize (relativePath);
+
+ int basePathLen = basePath.Length;
+ if (basePath [basePathLen - 1] != '/') {
+ if (basePathLen > 1) {
+ int lastSlash = basePath.LastIndexOf ('/');
+ if (lastSlash >= 0)
+ basePath = basePath.Substring (0, lastSlash + 1);
+ } else { // "~" only
+ basePath += "/";
+ }
+ }
+
+ return Normalize (basePath + relativePath);
}
public static string GetDirectory (string virtualPath)
{
- if (virtualPath == null || virtualPath == "") // Yes, "" throws an ArgumentNullException
- throw new ArgumentNullException ("virtualPath");
+ return GetDirectory (virtualPath, true);
+ }
- if (virtualPath [0] != '/')
- throw new ArgumentException ("The virtual path is not rooted", "virtualPath");
+ internal static string GetDirectory (string virtualPath, bool normalize)
+ {
+ if (normalize)
+ virtualPath = Normalize (virtualPath);
+
+ int vpLen = virtualPath.Length;
+ if (IsAppRelative (virtualPath) && vpLen < 3) { // "~" or "~/"
+ virtualPath = ToAbsolute (virtualPath);
+ vpLen = virtualPath.Length;
+ }
+
+ if (vpLen == 1 && virtualPath [0] == '/') // "/"
+ return null;
- string result = UrlUtils.GetDirectory (virtualPath);
- return AppendTrailingSlash (result);
+ int last = virtualPath.LastIndexOf ('/', vpLen - 2, vpLen - 2);
+ if (last > 0)
+ return virtualPath.Substring (0, last + 1);
+ else
+ return "/";
}
public static string GetExtension (string virtualPath)
{
- string filename = GetFileName (virtualPath);
- int dot = filename.LastIndexOf ('.');
- if (dot == -1 || dot == filename.Length + 1)
- return "";
+ if (StrUtils.IsNullOrEmpty (virtualPath))
+ throw new ArgumentNullException ("virtualPath");
+
+ virtualPath = Canonize (virtualPath);
+
+ int dot = virtualPath.LastIndexOf ('.');
+ if (dot == -1 || dot == virtualPath.Length - 1 || dot < virtualPath.LastIndexOf ('/'))
+ return String.Empty;
- return filename.Substring (dot);
+ return virtualPath.Substring (dot);
}
public static string GetFileName (string virtualPath)
{
- if (virtualPath == null || virtualPath == "") // Yes, "" throws an ArgumentNullException
- throw new ArgumentNullException ("virtualPath");
+ virtualPath = Normalize (virtualPath);
- return UrlUtils.GetFile (RemoveTrailingSlash (virtualPath));
+ if (IsAppRelative (virtualPath) && virtualPath.Length < 3) { // "~" or "~/"
+ virtualPath = ToAbsolute (virtualPath);
+ }
+
+ if (virtualPath.Length == 1 && virtualPath [0] == '/') { // "/"
+ return String.Empty;
+ }
+
+ virtualPath = RemoveTrailingSlash (virtualPath);
+ int last = virtualPath.LastIndexOf ('/');
+ return virtualPath.Substring (last + 1);
+ }
+
+ internal static bool IsRooted (string virtualPath)
+ {
+ return IsAbsolute (virtualPath) || IsAppRelative (virtualPath);
}
public static bool IsAbsolute (string virtualPath)
{
- if (virtualPath == "" || virtualPath == null)
+ if (StrUtils.IsNullOrEmpty (virtualPath))
throw new ArgumentNullException ("virtualPath");
- return (virtualPath [0] == '/');
+ return (virtualPath [0] == '/' || virtualPath [0] == '\\');
}
public static bool IsAppRelative (string virtualPath)
{
- if (virtualPath == null || virtualPath == "")
+ if (StrUtils.IsNullOrEmpty (virtualPath))
throw new ArgumentNullException ("virtualPath");
- string vpath = HttpRuntime.AppDomainAppVirtualPath;
- if (vpath == null)
- return false;
+ if (virtualPath.Length == 1 && virtualPath [0] == '~')
+ return true;
- return virtualPath.StartsWith (AppendTrailingSlash (vpath));
+ if (virtualPath [0] == '~' && (virtualPath [1] == '/' || virtualPath [1] == '\\'))
+ return true;
+
+ return false;
}
+ // MSDN: If the fromPath and toPath parameters are not rooted; that is,
+ // they do not equal the root operator (the tilde [~]), do not start with a tilde (~),
+ // such as a tilde and a slash mark (~/) or a tilde and a double backslash (~//),
+ // or do not start with a slash mark (/), an ArgumentException exception is thrown.
public static string MakeRelative (string fromPath, string toPath)
{
if (fromPath == null || toPath == null)
if (toPath == "")
return toPath;
- if (toPath [0] != '/')
- throw new ArgumentOutOfRangeException (); // This is what MS does.
+ toPath = ToAbsoluteInternal (toPath);
+ fromPath = ToAbsoluteInternal (fromPath);
+
+ if (String.CompareOrdinal (fromPath, toPath) == 0 && fromPath [fromPath.Length - 1] == '/')
+ return "./";
+
+ string [] toPath_parts = toPath.Split ('/');
+ string [] fromPath_parts = fromPath.Split ('/');
+ int dest = 1;
+ while (toPath_parts [dest] == fromPath_parts [dest]) {
+ if (toPath_parts.Length == (dest + 1) || fromPath_parts.Length == (dest + 1)) {
+ break;
+ }
+ dest++;
+ }
+ StringBuilder res = new StringBuilder();
+ for (int i = 1; i < fromPath_parts.Length - dest; i++) {
+ res.Append ("../");
+ }
+ for (int i = dest; i < toPath_parts.Length; i++) {
+ res.Append (toPath_parts [i]);
+ if (i < toPath_parts.Length - 1)
+ res.Append ('/');
+ }
+ return res.ToString ();
+ }
- if (fromPath.Length > 0 && fromPath [0] != '/')
- throw new ArgumentOutOfRangeException (); // This is what MS does.
+ static string ToAbsoluteInternal (string virtualPath)
+ {
+ if (IsAppRelative (virtualPath))
+ return ToAbsolute (virtualPath, HttpRuntime.AppDomainAppVirtualPath);
+ else if (IsAbsolute (virtualPath))
+ return Normalize (virtualPath);
- Uri from = new Uri ("http://nothing" + fromPath);
- return from.MakeRelativeUri (new Uri ("http://nothing" + toPath)).AbsolutePath;
+ throw new ArgumentOutOfRangeException ("Specified argument was out of the range of valid values.");
}
public static string RemoveTrailingSlash (string virtualPath)
public static string ToAbsolute (string virtualPath)
{
+ return ToAbsolute (virtualPath, true);
+ }
+
+ internal static string ToAbsolute (string virtualPath, bool normalize)
+ {
+ if (IsAbsolute (virtualPath)) {
+ if (normalize)
+ return Normalize (virtualPath);
+ else
+ return virtualPath;
+ }
+
string apppath = HttpRuntime.AppDomainAppVirtualPath;
if (apppath == null)
throw new HttpException ("The path to the application is not known");
- return ToAbsolute (apppath, virtualPath);
+ if (virtualPath.Length == 1 && virtualPath [0] == '~')
+ return apppath;
+
+ return ToAbsolute (virtualPath, apppath, normalize);
}
+ // If virtualPath is:
+ // Absolute, the ToAbsolute method returns the virtual path with no changes.
+ // Application relative, the ToAbsolute method adds applicationPath to the beginning of the virtual path.
+ // Not rooted, the ToAbsolute method raises an ArgumentOutOfRangeException exception.
public static string ToAbsolute (string virtualPath, string applicationPath)
{
- if (applicationPath == null || applicationPath == "")
+ return ToAbsolute (virtualPath, applicationPath, true);
+ }
+
+ internal static string ToAbsolute (string virtualPath, string applicationPath, bool normalize)
+ {
+ if (StrUtils.IsNullOrEmpty (applicationPath))
throw new ArgumentNullException ("applicationPath");
- if (virtualPath == null || virtualPath == "")
+ if (StrUtils.IsNullOrEmpty (virtualPath))
throw new ArgumentNullException ("virtualPath");
- if (virtualPath.StartsWith (".."))
- throw new ArgumentException (String.Format ("Relative path not allowed: '{0}'", virtualPath));
+ if (IsAppRelative(virtualPath)) {
+ if (applicationPath [0] != '/')
+ throw new ArgumentException ("appPath is not rooted", "applicationPath");
+
+ string path = applicationPath + (virtualPath.Length == 1 ? "/" : virtualPath.Substring (1));
+ if (normalize)
+ return Normalize (path);
+ else
+ return path;
+ }
- if (applicationPath [0] != '/')
- throw new ArgumentOutOfRangeException ("appPath is not rooted", "applicationPath");
+ if (virtualPath [0] != '/')
+ throw new ArgumentException (String.Format ("Relative path not allowed: '{0}'", virtualPath));
- return UrlUtils.Combine (applicationPath, virtualPath);
+ if (normalize)
+ return Normalize (virtualPath);
+ else
+ return virtualPath;
}
if (apppath == null)
throw new HttpException ("The path to the application is not known");
- return ToAppRelative (apppath, virtualPath);
+ return ToAppRelative (virtualPath, apppath);
}
public static string ToAppRelative (string virtualPath, string applicationPath)
{
- if (applicationPath == null || applicationPath == "")
- throw new ArgumentNullException ("applicationPath");
+ virtualPath = Normalize (virtualPath);
+ if (IsAppRelative (virtualPath))
+ return virtualPath;
- if (virtualPath == null || virtualPath == "")
- throw new ArgumentNullException ("virtualPath");
+ if (!IsAbsolute (applicationPath))
+ throw new ArgumentException ("appPath is not absolute", "applicationPath");
+
+ applicationPath = Normalize (applicationPath);
- if (virtualPath.StartsWith (".."))
- throw new ArgumentException (String.Format ("Relative path not allowed: '{0}'", virtualPath));
+ if (applicationPath.Length == 1)
+ return "~" + virtualPath;
- if (applicationPath [0] != '/')
- throw new ArgumentOutOfRangeException ("appPath is not rooted", "applicationPath");
+ int appPath_lenght = applicationPath.Length;
+ if (String.CompareOrdinal (virtualPath, applicationPath) == 0)
+ return "~/";
+ if (String.CompareOrdinal (virtualPath, 0, applicationPath, 0, appPath_lenght) == 0)
+ return "~" + virtualPath.Substring (appPath_lenght);
- return MakeRelative (applicationPath, virtualPath);
+ return virtualPath;
}
- }
-}
-#endif
+ static char [] path_sep = { '/' };
+ internal static string Normalize (string path)
+ {
+ if (!IsRooted (path))
+ throw new ArgumentException (String.Format ("The relative virtual path '{0}' is not allowed here.", path));
+
+ if (path.Length == 1) // '/' or '~'
+ return path;
+
+ path = Canonize (path);
+
+ int dotPos = path.IndexOf ('.');
+ while (dotPos >= 0) {
+ if (++dotPos == path.Length)
+ break;
+
+ char nextChar = path [dotPos];
+
+ if ((nextChar == '/') || (nextChar == '.'))
+ break;
+
+ dotPos = path.IndexOf ('.', dotPos);
+ }
+
+ if (dotPos < 0)
+ return path;
+
+ bool starts_with_tilda = false;
+ bool ends_with_slash = false;
+ string [] apppath_parts= null;
+
+ if (path [0] == '~') {
+ if (path.Length == 2) // "~/"
+ return "~/";
+ starts_with_tilda = true;
+ path = path.Substring (1);
+ }
+ else if (path.Length == 1) { // "/"
+ return "/";
+ }
+
+ if (path [path.Length - 1] == '/')
+ ends_with_slash = true;
+
+ string [] parts = StrUtils.SplitRemoveEmptyEntries (path, path_sep);
+ int end = parts.Length;
+
+ int dest = 0;
+
+ for (int i = 0; i < end; i++) {
+ string current = parts [i];
+ if (current == ".")
+ continue;
+
+ if (current == "..") {
+ dest--;
+
+ if(dest >= 0)
+ continue;
+
+ if (starts_with_tilda) {
+ if (apppath_parts == null) {
+ string apppath = HttpRuntime.AppDomainAppVirtualPath;
+ apppath_parts = StrUtils.SplitRemoveEmptyEntries (apppath, path_sep);
+ }
+
+ if ((apppath_parts.Length + dest) >= 0)
+ continue;
+ }
+
+ throw new HttpException ("Cannot use a leading .. to exit above the top directory.");
+ }
+
+ if (dest >= 0)
+ parts [dest] = current;
+ else
+ apppath_parts [apppath_parts.Length + dest] = current;
+
+ dest++;
+ }
+
+ StringBuilder str = new StringBuilder();
+ if (apppath_parts != null) {
+ starts_with_tilda = false;
+ int count = apppath_parts.Length;
+ if (dest < 0)
+ count += dest;
+ for (int i = 0; i < count; i++) {
+ str.Append ('/');
+ str.Append (apppath_parts [i]);
+ }
+ }
+ else if (starts_with_tilda) {
+ str.Append ('~');
+ }
+
+ for (int i = 0; i < dest; i++) {
+ str.Append ('/');
+ str.Append (parts [i]);
+ }
+
+ if (str.Length > 0) {
+ if (ends_with_slash)
+ str.Append ('/');
+ }
+ else {
+ return "/";
+ }
+
+ return str.ToString ();
+ }
+
+ internal static string Canonize (string path)
+ {
+ int index = -1;
+ for (int i=0; i < path.Length; i++) {
+ if ((path [i] == '\\') || (path [i] == '/' && (i + 1) < path.Length && (path [i + 1] == '/' || path [i + 1] == '\\'))) {
+ index = i;
+ break;
+ }
+ }
+ if (index < 0)
+ return path;
+
+ StringBuilder sb = new StringBuilder (path.Length);
+ sb.Append (path, 0, index);
+
+ for (int i = index; i < path.Length; i++) {
+ if (path [i] == '\\' || path [i] == '/') {
+ int next = i + 1;
+ if (next < path.Length && (path [next] == '\\' || path [next] == '/'))
+ continue;
+ sb.Append ('/');
+ }
+ else {
+ sb.Append (path [i]);
+ }
+ }
+
+ return sb.ToString ();
+ }
+
+ // See: http://support.microsoft.com/kb/932552
+ // See: https://bugzilla.novell.com/show_bug.cgi?id=509163
+ static readonly char[] invalidVirtualPathChars = {':', '*'};
+ static readonly string aspNetVerificationKey = "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\ASP.NET";
+ internal static bool IsValidVirtualPath (string path)
+ {
+ if (path == null)
+ return false;
+
+ bool doValidate = true;
+ if (runningOnWindows) {
+ try {
+ object v = Registry.GetValue (aspNetVerificationKey, "VerificationCompatibility", null);
+ if (v != null && v is int)
+ doValidate = (int)v != 1;
+ } catch {
+ // ignore
+ }
+ }
+
+ if (doValidate)
+ doValidate = monoSettingsVerifyCompatibility;
+
+ if (!doValidate)
+ return true;
+
+ return path.IndexOfAny (invalidVirtualPathChars) == -1;
+ }
+ }
+}
projects / mono.git / blobdiff