The 'api/files?physical_path={value}' endpoint now returns a single resource. Added better support for physical paths using the alternate directory separator character.

src/Microsoft.IIS.Administration.Files/AccessControl.cs

@@ -39,12 +39,11 @@ namespace Microsoft.IIS.Administration.Files
 
         public IEnumerable<string> GetClaims(string path)
         {
-            var absolutePath = PathUtil.GetFullPath(path);
             var claims = new List<string>();
 
             //
             // Path must be absolute with no environment variables
-            if (!absolutePath.Equals(path, StringComparison.OrdinalIgnoreCase)) {
+            if (!PathUtil.IsFullPath(path)) {
                 return claims;
             }
 
@@ -52,7 +51,7 @@ namespace Microsoft.IIS.Administration.Files
             // Best match
             foreach (var location in Options.Locations) {
 
-                if (PathUtil.PathStartsWith(absolutePath, location.Path)) {
+                if (HasPrefix(path, location.Path)) {
 
                     claims = location.Claims;
 
@@ -62,5 +61,35 @@ namespace Microsoft.IIS.Administration.Files
 
             return claims;
         }
+
+
+
+        private static bool HasPrefix(string path, string prefix)
+        {
+            //
+            // Remove trailing separator (if any) from prefix
+            if (prefix.Length > 0 && prefix.LastIndexOfAny(PathUtil.SEPARATORS) == prefix.Length - 1) {
+                prefix = prefix.Substring(0, prefix.Length - 1);
+            }
+
+            if (prefix.Length > path.Length) {
+                return false;
+            }
+
+            var testParts = path.Split(PathUtil.SEPARATORS);
+            var prefixParts = prefix.Split(PathUtil.SEPARATORS);
+
+            if (prefixParts.Length > testParts.Length) {
+                return false;
+            }
+
+            for (var i = 0; i < prefixParts.Length; i++) {
+                if (!prefixParts[i].Equals(testParts[i], StringComparison.OrdinalIgnoreCase)) {
+                    return false;
+                }
+            }
+
+            return true;
+        }
     }
 }

src/Microsoft.IIS.Administration.Files/Controllers/FilesController.cs

@@ -16,6 +16,9 @@ namespace Microsoft.IIS.Administration.Files
 
     public class FilesController : ApiBaseController
     {
+        private const string nameKey = "name";
+        private const string physicalPathKey = "physical_path";
+
         IFileOptions _options;
         IFileProvider _provider = FileProvider.Default;
 
@@ -29,18 +32,22 @@ namespace Microsoft.IIS.Administration.Files
         public object Get()
         {
             string parentUuid = Context.Request.Query[Defines.PARENT_IDENTIFIER];
-            string name = Context.Request.Query["name"];
-            string physicalPath = Context.Request.Query["physical_path"];
+            string name = Context.Request.Query[nameKey];
+            string physicalPath = Context.Request.Query[physicalPathKey];
 
             var files = new List<object>();
             Fields fields = Context.Request.GetFields();
 
             if (!string.IsNullOrEmpty(name)) {
                 if (name.IndexOfAny(PathUtil.InvalidFileNameChars) != -1) {
-                    throw new ApiArgumentException("name");
+                    throw new ApiArgumentException(nameKey);
                 }
             }
 
+            if (physicalPath != null) {
+                return GetByPhysicalPath(physicalPath, fields);
+            }
+
             if (parentUuid != null) {
                 var fileId = FileId.FromUuid(parentUuid);
 
@@ -50,9 +57,6 @@ namespace Microsoft.IIS.Administration.Files
 
                 FillWithChildren(files, fileId.PhysicalPath, $"*{name}*", fields);
             }
-            else if (!string.IsNullOrEmpty(physicalPath)) {
-                FillFromPhysicalPath(files, physicalPath, fields);
-            }
             else {
                 FillFromLocations(files, name, fields);
             }
@@ -204,6 +208,41 @@ namespace Microsoft.IIS.Administration.Files
 
 
 
+        private object GetByPhysicalPath(string physicalPath, Fields fields)
+        {
+            if (string.IsNullOrEmpty(physicalPath)) {
+                throw new ApiArgumentException(physicalPathKey);
+            }
+
+            physicalPath = System.Environment.ExpandEnvironmentVariables(physicalPath);
+
+            if (!PathUtil.IsPathRooted(physicalPath)) {
+                throw new ApiArgumentException(physicalPathKey);
+            }
+
+            try {
+                physicalPath = PathUtil.GetFullPath(physicalPath);
+            }
+            catch (ArgumentException) {
+                throw new ApiArgumentException(physicalPathKey);
+            }
+
+            object model = null;
+
+            if (_provider.FileExists(physicalPath)) {
+                model = FilesHelper.FileToJsonModel(_provider.GetFileInfo(physicalPath), fields);
+            }
+            else if (_provider.DirectoryExists(physicalPath)) {
+                model = FilesHelper.DirectoryToJsonModel(_provider.GetDirectoryInfo(physicalPath), fields);
+            }
+
+            if (model == null) {
+                return NotFound();
+            }
+
+            return model;
+        }
+
         private void FillWithChildren(List<object> models, string physicalPath, string nameFilter, Fields fields)
         {
             //
@@ -219,16 +258,6 @@ namespace Microsoft.IIS.Administration.Files
             }
         }
 
-        private void FillFromPhysicalPath(List<object> models, string physicalPath, Fields fields)
-        {
-            if (_provider.FileExists(physicalPath)) {
-                models.Add(FilesHelper.FileToJsonModelRef(_provider.GetFileInfo(physicalPath), fields));
-            }
-            else if (_provider.DirectoryExists(physicalPath)) {
-                models.Add(FilesHelper.DirectoryToJsonModelRef(_provider.GetDirectoryInfo(physicalPath), fields));
-            }
-        }
-
         private void FillFromLocations(List<object> models, string nameFilter, Fields fields)
         {
             foreach (var location in _options.Locations) {

src/Microsoft.IIS.Administration.Files/Utils/PathUtil.cs

@@ -26,7 +26,7 @@ namespace Microsoft.IIS.Administration.Files
 
             var expanded = Environment.ExpandEnvironmentVariables(path);
 
-            if (!Path.IsPathRooted(expanded)) {
+            if (!IsPathRooted(expanded)) {
                 throw new ArgumentException("Path must be rooted.", nameof(path));
             }
 
@@ -43,74 +43,45 @@ namespace Microsoft.IIS.Administration.Files
                 throw new ArgumentNullException(nameof(path));
             }
 
+            //
+            // Expand to make sure the path is rooted before calling GetFullPath
             var expanded = Environment.ExpandEnvironmentVariables(path);
 
-            if (!Path.IsPathRooted(expanded)) {
+            if (!IsPathRooted(expanded)) {
                 return false;
             }
 
-            return path.Equals(Path.GetFullPath(expanded), StringComparison.OrdinalIgnoreCase);
+            bool ret = false;
+            try {
+                ret = path.Replace(Path.AltDirectorySeparatorChar, Path.DirectorySeparatorChar)
+                          .Equals(Path.GetFullPath(expanded), StringComparison.OrdinalIgnoreCase);
+            }
+            catch (ArgumentException) {
+                //
+                // Argument exception for invalid paths such as '////' (Invalid network share format)
+                return false;
             }
 
-        public static int PrefixSegments(string prefix, string path, StringComparison stringComparison = StringComparison.OrdinalIgnoreCase)
-        {
-            if (prefix == null) {
-                throw new ArgumentNullException(nameof(prefix));
+            return ret;
         }
-            if (path == null) {
+
+        public static bool IsPathRooted(string path)
+        {
+            if (string.IsNullOrEmpty(path)) {
                 throw new ArgumentNullException(nameof(path));
             }
-            if (!Path.IsPathRooted(prefix) || !Path.IsPathRooted(path)) {
-                throw new ArgumentException("Paths must be rooted.");
+
+            if (!Path.IsPathRooted(path)) {
+                return false;
             }
 
-            var prefixParts = prefix.TrimEnd(SEPARATORS).Split(SEPARATORS);
-            var pathParts = path.TrimEnd(SEPARATORS).Split(SEPARATORS);
-
-            if (prefixParts.Length > pathParts.Length) {
-                return -1;
+            // Prevent cases such as 'c:'
+            if (path.IndexOfAny(SEPARATORS) == -1) {
+                return false;
             }
 
-            int index = 0;
-            while (pathParts.Length > index && prefixParts.Length > index && prefixParts[index].Equals(pathParts[index], stringComparison)) {
-                index++;
-            }
-            
-            if (prefixParts.Length > index) {
-                return -1;
-            }
-
-            return index == 0 ? -1 : index;
-        }
-
-        public static bool IsParentPath(string parent, string child)
-        {
-            var prefixSegments = PathUtil.PrefixSegments(parent, child);
-            if (prefixSegments > 0 && NumberOfSegments(child) > NumberOfSegments(parent)) {
             return true;
         }
-            return false;
-        }
-
-        public static int NumberOfSegments(string path)
-        {
-            if (path == null) {
-                throw new ArgumentNullException(nameof(path));
-            }
-            if (!path.StartsWith("/")) {
-                throw new ArgumentException("Path must begin with '/'.");
-            }
-
-            return path.TrimEnd(SEPARATORS).Split(SEPARATORS).Length;
-        }
-
-        public static string TrimStart(this string val, string prefix, StringComparison stringComparision = StringComparison.Ordinal)
-        {
-            if (val.StartsWith(prefix, stringComparision)) {
-                val = val.Remove(0, prefix.Length);
-            }
-            return val;
-        }
 
         public static string RemoveLastSegment(string path)
         {
@@ -127,37 +98,6 @@ namespace Microsoft.IIS.Administration.Files
             return ret == "/" ? ret : ret.TrimEnd('/');
         }
 
-        public static bool PathStartsWith(string path, string prefix)
-        {
-            if (string.IsNullOrEmpty(path)) {
-                throw new ArgumentNullException(nameof(path));
-            }
-            if (string.IsNullOrEmpty(prefix)) {
-                throw new ArgumentNullException(nameof(prefix));
-            }
-
-            if (prefix.Length > path.Length) {
-                return false;
-            }
-
-            var separators = new char[] { Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar };
-
-            var testParts = path.Split(separators);
-            var prefixParts = prefix.TrimEnd(separators).Split(separators);
-
-            if (prefixParts.Length > testParts.Length) {
-                return false;
-            }
-
-            for (var i = 0; i < prefixParts.Length; i++) {
-                if (!prefixParts[i].Equals(testParts[i], StringComparison.OrdinalIgnoreCase)) {
-                    return false;
-                }
-            }
-
-            return true;
-        }
-
         public static bool IsValidFileName(string name)
         {
             return !string.IsNullOrEmpty(name) &&

src/Microsoft.IIS.Administration.WebServer.Applications/ApplicationHelper.cs

@@ -280,6 +280,7 @@ namespace Microsoft.IIS.Administration.WebServer.Applications
 
             if (physicalPath != null) {
 
+                physicalPath = physicalPath.Replace(Path.AltDirectorySeparatorChar, Path.DirectorySeparatorChar);
                 var expanded = System.Environment.ExpandEnvironmentVariables(physicalPath);
 
                 if (!PathUtil.IsFullPath(expanded)) {
@@ -294,7 +295,7 @@ namespace Microsoft.IIS.Administration.WebServer.Applications
 
                 var rootVDir = app.VirtualDirectories["/"];
                 if (rootVDir != null) {
-                    rootVDir.PhysicalPath = physicalPath.Replace('/', '\\');
+                    rootVDir.PhysicalPath = physicalPath;
                 }
 
             }

src/Microsoft.IIS.Administration.WebServer.Compression/CompressionHelper.cs

@@ -25,6 +25,7 @@ namespace Microsoft.IIS.Administration.WebServer.Compression
 
                 DynamicHelper.If((object) model.directory, v => {
 
+                    v = v.Replace(Path.AltDirectorySeparatorChar, Path.DirectorySeparatorChar);
                     var expanded = System.Environment.ExpandEnvironmentVariables(v);
 
                     if (!PathUtil.IsFullPath(expanded)) {

src/Microsoft.IIS.Administration.WebServer.Files/FilesHelper.cs

@@ -314,7 +314,7 @@ namespace Microsoft.IIS.Administration.WebServer.Files
             Application parentApp = null;
             var maxMatch = 0;
             foreach (var app in site.Applications) {
-                var matchingPrefix = PathUtil.PrefixSegments(app.Path, path);
+                var matchingPrefix = PrefixSegments(app.Path, path);
                 if (matchingPrefix > maxMatch) {
                     parentApp = app;
                     maxMatch = matchingPrefix;
@@ -339,7 +339,7 @@ namespace Microsoft.IIS.Administration.WebServer.Files
                 var testPath = path.TrimStart(parentApp.Path.TrimEnd('/'), StringComparison.OrdinalIgnoreCase);
                 testPath = testPath == string.Empty ? "/" : testPath;
                 foreach (var vdir in parentApp.VirtualDirectories) {
-                    var matchingPrefix = PathUtil.PrefixSegments(vdir.Path, testPath);
+                    var matchingPrefix = PrefixSegments(vdir.Path, testPath);
                     if (matchingPrefix > maxMatch) {
                         parentVdir = vdir;
                         maxMatch = matchingPrefix;
@@ -389,7 +389,17 @@ namespace Microsoft.IIS.Administration.WebServer.Files
                 }
             }
 
-            var absolute = PathUtil.GetFullPath(path);
+            string absolute = null;
+
+            try {
+                absolute = PathUtil.GetFullPath(path);
+            }
+            catch (ArgumentException) {
+                //
+                // Argument exception for invalid paths such as '////' (Invalid network share format)
+                return false;
+            }
+
             var slashIndex = absolute.IndexOf(Path.DirectorySeparatorChar);
             if (!absolute.Substring(slashIndex, absolute.Length - slashIndex).Equals(path.Replace(Path.AltDirectorySeparatorChar, Path.DirectorySeparatorChar))) {
                 return false;
@@ -482,5 +492,44 @@ namespace Microsoft.IIS.Administration.WebServer.Files
 
             return ret;
         }
+
+        private static int PrefixSegments(string prefix, string path, StringComparison stringComparison = StringComparison.OrdinalIgnoreCase)
+        {
+            if (prefix == null) {
+                throw new ArgumentNullException(nameof(prefix));
+            }
+            if (path == null) {
+                throw new ArgumentNullException(nameof(path));
+            }
+            if (!PathUtil.IsPathRooted(prefix) || !PathUtil.IsPathRooted(path)) {
+                throw new ArgumentException("Paths must be rooted.");
+            }
+
+            var prefixParts = prefix.TrimEnd(PathUtil.SEPARATORS).Split(PathUtil.SEPARATORS);
+            var pathParts = path.TrimEnd(PathUtil.SEPARATORS).Split(PathUtil.SEPARATORS);
+
+            if (prefixParts.Length > pathParts.Length) {
+                return -1;
+            }
+
+            int index = 0;
+            while (pathParts.Length > index && prefixParts.Length > index && prefixParts[index].Equals(pathParts[index], stringComparison)) {
+                index++;
+            }
+
+            if (prefixParts.Length > index) {
+                return -1;
+            }
+
+            return index == 0 ? -1 : index;
+        }
+
+        private static string TrimStart(this string val, string prefix, StringComparison stringComparision = StringComparison.Ordinal)
+        {
+            if (val.StartsWith(prefix, stringComparision)) {
+                val = val.Remove(0, prefix.Length);
+            }
+            return val;
+        }
     }
 }

src/Microsoft.IIS.Administration.WebServer.HttpRequestTracing/Helpers/Helper.cs

@@ -84,6 +84,7 @@ namespace Microsoft.IIS.Administration.WebServer.HttpRequestTracing
 
                     DynamicHelper.If((object)model.directory, v => {
 
+                        v = v.Replace(Path.AltDirectorySeparatorChar, Path.DirectorySeparatorChar);
                         var expanded = System.Environment.ExpandEnvironmentVariables(v);
 
                         if (!PathUtil.IsFullPath(expanded)) {

src/Microsoft.IIS.Administration.WebServer.Logging/LoggingHelper.cs

@@ -238,7 +238,7 @@ namespace Microsoft.IIS.Administration.WebServer.Logging
                         CentralBinaryLogFile bFile = logSection.CentralBinaryLogFile;
                         
                         DynamicHelper.If((object)bSettings.directory, v => {
-                            EnsureCanUseDirectory(v);
+                            EnsureCanUseDirectory(ref v);
                             bFile.Directory = v;
                         });
                         
@@ -256,7 +256,7 @@ namespace Microsoft.IIS.Administration.WebServer.Logging
                         CentralW3CLogFile wFile = logSection.CentralW3CLogFile;
                         
                         DynamicHelper.If((object)wSettings.directory, v => {
-                            EnsureCanUseDirectory(v);
+                            EnsureCanUseDirectory(ref v);
                             wFile.Directory = v;
                         });
 
@@ -310,7 +310,7 @@ namespace Microsoft.IIS.Administration.WebServer.Logging
                     dynamic siteSettings = model;
                     
                     DynamicHelper.If((object)siteSettings.directory, v => {
-                        EnsureCanUseDirectory(v);
+                        EnsureCanUseDirectory(ref v);
                         siteLogFile.Directory = v;
                     });
 
@@ -515,8 +515,9 @@ namespace Microsoft.IIS.Administration.WebServer.Logging
 
 
 
-        private static void EnsureCanUseDirectory(string path)
+        private static void EnsureCanUseDirectory(ref string path)
         {
+            path = path.Replace(Path.AltDirectorySeparatorChar, Path.DirectorySeparatorChar);
             var expanded = System.Environment.ExpandEnvironmentVariables(path);
 
             if (!PathUtil.IsFullPath(expanded)) {

src/Microsoft.IIS.Administration.WebServer.Modules/ModuleHelper.cs

@@ -36,7 +36,7 @@ namespace Microsoft.IIS.Administration.WebServer.Modules
                 throw new ApiArgumentException("image");
             }
 
-            AssertCanUseImage(image);
+            AssertCanUseImage(ref image);
 
             var globalCollection = GetGlobalModulesCollection();
 
@@ -294,7 +294,7 @@ namespace Microsoft.IIS.Administration.WebServer.Modules
             string image = DynamicHelper.Value(model.image);
 
             if (image != null) {
-                AssertCanUseImage(image);
+                AssertCanUseImage(ref image);
                 globalModule.Image = image;
             }
 
@@ -552,8 +552,9 @@ namespace Microsoft.IIS.Administration.WebServer.Modules
 
 
 
-        private static void AssertCanUseImage(string path)
+        private static void AssertCanUseImage(ref string path)
         {
+            path = path.Replace(Path.AltDirectorySeparatorChar, Path.DirectorySeparatorChar);
             var expanded = System.Environment.ExpandEnvironmentVariables(path);
 
             if (!PathUtil.IsFullPath(expanded)) {

src/Microsoft.IIS.Administration.WebServer.Sites/SiteHelper.cs

@@ -377,6 +377,7 @@ namespace Microsoft.IIS.Administration.WebServer.Sites
 
             if(physicalPath != null) {
 
+                physicalPath = physicalPath.Replace(Path.AltDirectorySeparatorChar, Path.DirectorySeparatorChar);
                 var expanded = System.Environment.ExpandEnvironmentVariables(physicalPath);
 
                 if (!PathUtil.IsFullPath(expanded)) {
@@ -396,7 +397,7 @@ namespace Microsoft.IIS.Administration.WebServer.Sites
 
                     if (rootVDir != null) {
 
-                        rootVDir.PhysicalPath = physicalPath.Replace('/', '\\');
+                        rootVDir.PhysicalPath = physicalPath;
                     }
                 }
             }

src/Microsoft.IIS.Administration.WebServer.VirtualDirectories/VDirHelper.cs

@@ -193,6 +193,7 @@ namespace Microsoft.IIS.Administration.WebServer.VirtualDirectories
 
             if(physicalPath != null) {
 
+                physicalPath = physicalPath.Replace(Path.AltDirectorySeparatorChar, Path.DirectorySeparatorChar);
                 var expanded = System.Environment.ExpandEnvironmentVariables(physicalPath);
 
                 if (!PathUtil.IsFullPath(expanded)) {
@@ -205,7 +206,7 @@ namespace Microsoft.IIS.Administration.WebServer.VirtualDirectories
                     throw new NotFoundException("physical_path");
                 }
 
-                vdir.PhysicalPath = physicalPath.Replace('/', '\\');
+                vdir.PhysicalPath = physicalPath;
             }
 
             if (model.identity != null) {

test/Microsoft.IIS.Administration.Tests/Files.cs

@@ -92,15 +92,6 @@ namespace Microsoft.IIS.Administration.Tests
             }
         }
 
-        [Fact]
-        public void IsParentPath()
-        {
-            Assert.True(PathUtil.IsParentPath("/", "/a"));
-            Assert.True(PathUtil.IsParentPath("/a/b", "/a/b/c"));
-            Assert.False(PathUtil.IsParentPath("/", "/"));
-            Assert.False(PathUtil.IsParentPath("/a/b", "/a/bc"));
-        }
-
         [Fact]
         public void IsExactVdirPath()
         {
@@ -221,29 +212,6 @@ namespace Microsoft.IIS.Administration.Tests
             }
         }
 
-        [Fact]
-        public void PrefixSegments()
-        {
-            var path = "/";
-
-            Assert.Equal(PathUtil.PrefixSegments("/", path), 1);
-            Assert.Equal(PathUtil.PrefixSegments("/a", path), -1);
-
-            path = "/abc/def/ghi";
-
-            Assert.Equal(PathUtil.PrefixSegments("/", path), 1);
-            Assert.Equal(PathUtil.PrefixSegments("/abc", path), 2);
-            Assert.Equal(PathUtil.PrefixSegments("/abc/", path), 2);
-            Assert.Equal(PathUtil.PrefixSegments("/abcd/", path), -1);
-            Assert.Equal(PathUtil.PrefixSegments("/aBc/", path), 2);
-            Assert.Equal(PathUtil.PrefixSegments("/aBc/", path, StringComparison.Ordinal), -1);
-            Assert.Equal(PathUtil.PrefixSegments("/abc/def", path), 3);
-            Assert.Equal(PathUtil.PrefixSegments("/abc/def/", path), 3);
-            Assert.Equal(PathUtil.PrefixSegments("/abc/defg/", path), -1);
-            Assert.Equal(PathUtil.PrefixSegments("/abca/def/", path), -1);
-
-        }
-
         [Fact]
         public void RemoveLastSegment()
         {