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234 lines
13 KiB
234 lines
13 KiB
/* Copyright (C) 2008-2016 Peter Palotas, Jeffrey Jangli, Alexandr Normuradov
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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using Alphaleonis.Win32.Network;
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using System;
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using System.Globalization;
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using System.IO;
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using System.Net.NetworkInformation;
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using System.Security;
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namespace Alphaleonis.Win32.Filesystem
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{
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public static partial class Path
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{
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#region GetMappedConnectionName
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/// <summary>[AlphaFS] Gets the connection name of the locally mapped drive.</summary>
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/// <returns>The server and share as: \\servername\sharename.</returns>
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/// <exception cref="ArgumentException"/>
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/// <exception cref="ArgumentNullException"/>
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/// <exception cref="PathTooLongException"/>
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/// <exception cref="NetworkInformationException"/>
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/// <param name="path">The local path with drive name.</param>
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[SecurityCritical]
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public static string GetMappedConnectionName(string path)
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{
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return Host.GetRemoteNameInfoCore(path, true).lpConnectionName;
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}
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#endregion // GetMappedConnectionName
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#region GetMappedUncName
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/// <summary>[AlphaFS] Gets the network share name from the locally mapped path.</summary>
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/// <returns>The network share connection name of <paramref name="path"/>.</returns>
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/// <exception cref="ArgumentException"/>
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/// <exception cref="ArgumentNullException"/>
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/// <exception cref="PathTooLongException"/>
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/// <exception cref="NetworkInformationException"/>
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/// <param name="path">The local path with drive name.</param>
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[SecurityCritical]
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public static string GetMappedUncName(string path)
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{
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return Host.GetRemoteNameInfoCore(path, true).lpUniversalName;
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}
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#endregion // GetMappedUncName
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#region IsUncPath
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/// <summary>[AlphaFS] Determines if a path string is a valid Universal Naming Convention (UNC) path.</summary>
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/// <returns><see langword="true"/> if the specified path is a Universal Naming Convention (UNC) path, <see langword="false"/> otherwise.</returns>
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/// <param name="path">The path to check.</param>
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[SecurityCritical]
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public static bool IsUncPath(string path)
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{
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return IsUncPathCore(path, false, true);
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}
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/// <summary>[AlphaFS] Determines if a path string is a valid Universal Naming Convention (UNC) path, optionally skip invalid path character check.</summary>
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/// <returns><see langword="true"/> if the specified path is a Universal Naming Convention (UNC) path, <see langword="false"/> otherwise.</returns>
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/// <param name="path">The path to check.</param>
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/// <param name="checkInvalidPathChars"><see langword="true"/> will check <paramref name="path"/> for invalid path characters.</param>
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[SecurityCritical]
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public static bool IsUncPath(string path, bool checkInvalidPathChars)
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{
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return IsUncPathCore(path, false, checkInvalidPathChars);
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}
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#endregion // IsUncPath
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#region LocalToUnc
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/// <summary>[AlphaFS] Converts a local path to a network share path.
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/// <para>A Local path, e.g.: "C:\Windows" will be returned as: "\\MachineName\C$\Windows".</para>
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/// <para>If a logical drive points to a network share path, the share path will be returned instead.</para>
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/// </summary>
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/// <returns>On successful conversion a UNC path is returned.
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/// <para>If the conversion fails, <paramref name="localPath"/> is returned.</para>
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/// <para>If <paramref name="localPath"/> is an empty string or <see langword="null"/>, <see langword="null"/> is returned.</para>
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/// </returns>
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/// <exception cref="ArgumentException"/>
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/// <exception cref="PathTooLongException"/>
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/// <exception cref="NetworkInformationException"/>
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/// <param name="localPath">A local path, e.g.: "C:\Windows".</param>
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[SecurityCritical]
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public static string LocalToUnc(string localPath)
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{
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return LocalToUncCore(localPath, false, false, false);
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}
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/// <summary>[AlphaFS] Converts a local path to a network share path, optionally returning it in a long path format.
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/// <para>A Local path, e.g.: "C:\Windows" will be returned as: "\\MachineName\C$\Windows".</para>
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/// <para>If a logical drive points to a network share path, the share path will be returned instead.</para>
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/// </summary>
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/// <returns>On successful conversion a UNC path is returned.
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/// <para>If the conversion fails, <paramref name="localPath"/> is returned.</para>
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/// <para>If <paramref name="localPath"/> is an empty string or <see langword="null"/>, <see langword="null"/> is returned.</para>
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/// </returns>
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/// <exception cref="ArgumentException"/>
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/// <exception cref="PathTooLongException"/>
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/// <exception cref="NetworkInformationException"/>
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/// <param name="localPath">A local path, e.g.: "C:\Windows".</param>
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/// <param name="asLongPath"><see langword="true"/> returns the path in long path (Unicode) format, when <see langword="false"/> returns the path as a regular path.</param>
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[SecurityCritical]
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public static string LocalToUnc(string localPath, bool asLongPath)
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{
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return LocalToUncCore(localPath, asLongPath, false, false);
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}
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/// <summary>[AlphaFS] Converts a local path to a network share path, optionally returning it in a long path format and the ability to add or remove a trailing backslash.
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/// <para>A Local path, e.g.: "C:\Windows" will be returned as: "\\MachineName\C$\Windows".</para>
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/// <para>If a logical drive points to a network share path, the share path will be returned instead.</para>
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/// </summary>
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/// <returns>On successful conversion a UNC path is returned.
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/// <para>If the conversion fails, <paramref name="localPath"/> is returned.</para>
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/// <para>If <paramref name="localPath"/> is an empty string or <see langword="null"/>, <see langword="null"/> is returned.</para>
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/// </returns>
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/// <exception cref="ArgumentException"/>
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/// <exception cref="PathTooLongException"/>
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/// <exception cref="NetworkInformationException"/>
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/// <param name="localPath">A local path, e.g.: "C:\Windows".</param>
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/// <param name="asLongPath"><see langword="true"/> returns the path in long path (Unicode) format, when <see langword="false"/> returns the path as a regular path.</param>
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/// <param name="addTrailingDirectorySeparator"><see langword="true"/> adds a trailing <see cref="DirectorySeparatorChar"/> character to <paramref name="localPath"/>, when absent.</param>
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/// <param name="removeTrailingDirectorySeparator"><see langword="true"/> removes the trailing <see cref="DirectorySeparatorChar"/> character from <paramref name="localPath"/>, when present.</param>
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[SecurityCritical]
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public static string LocalToUnc(string localPath, bool asLongPath, bool addTrailingDirectorySeparator, bool removeTrailingDirectorySeparator)
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{
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return LocalToUncCore(localPath, asLongPath, addTrailingDirectorySeparator, removeTrailingDirectorySeparator);
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}
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#endregion // LocalToUnc
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#region Internal Methods
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/// <summary>[AlphaFS] Determines if a path string is a valid Universal Naming Convention (UNC) path, optionally skip invalid path character check.</summary>
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/// <returns><see langword="true"/> if the specified path is a Universal Naming Convention (UNC) path, <see langword="false"/> otherwise.</returns>
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/// <param name="path">The path to check.</param>
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/// <param name="isRegularPath">When <see langword="true"/> indicates that <paramref name="path"/> is already in regular path format.</param>
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/// <param name="checkInvalidPathChars"><see langword="true"/> will check <paramref name="path"/> for invalid path characters.</param>
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[SecurityCritical]
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internal static bool IsUncPathCore(string path, bool isRegularPath, bool checkInvalidPathChars)
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{
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if (!isRegularPath)
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path = GetRegularPathCore(path, checkInvalidPathChars ? GetFullPathOptions.CheckInvalidPathChars : 0, false);
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else if (checkInvalidPathChars)
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CheckInvalidPathChars(path, false, false);
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Uri uri;
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return Uri.TryCreate(path, UriKind.Absolute, out uri) && uri.IsUnc;
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}
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/// <summary>Converts a local path to a network share path.
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/// <para>A Local path, e.g.: "C:\Windows" will be returned as: "\\MachineName\C$\Windows".</para>
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/// <para>If a logical drive points to a network share path, the share path will be returned instead.</para>
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/// </summary>
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/// <returns>On successful conversion a UNC path is returned.
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/// <para>If the conversion fails, <paramref name="localPath"/> is returned.</para>
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/// <para>If <paramref name="localPath"/> is an empty string or <see langword="null"/>, <see langword="null"/> is returned.</para>
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/// </returns>
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/// <exception cref="ArgumentException"/>
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/// <exception cref="PathTooLongException"/>
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/// <exception cref="NetworkInformationException"/>
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/// <param name="localPath">A local path, e.g.: "C:\Windows".</param>
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/// <param name="asLongPath"><see langword="true"/> returns the path in long path (Unicode) format, when <see langword="false"/> returns the path as a regular path.</param>
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/// <param name="addTrailingDirectorySeparator"><see langword="true"/> adds a trailing <see cref="DirectorySeparatorChar"/> character to <paramref name="localPath"/>, when absent.</param>
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/// <param name="removeTrailingDirectorySeparator"><see langword="true"/> removes the trailing <see cref="DirectorySeparatorChar"/> character from <paramref name="localPath"/>, when present.</param>
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[SecurityCritical]
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internal static string LocalToUncCore(string localPath, bool asLongPath, bool addTrailingDirectorySeparator, bool removeTrailingDirectorySeparator)
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{
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if (Utils.IsNullOrWhiteSpace(localPath))
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return null;
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localPath = GetRegularPathCore(localPath, GetFullPathOptions.CheckInvalidPathChars, false);
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if (!IsUncPathCore(localPath, true, false))
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{
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if (localPath[0] == CurrentDirectoryPrefixChar || !IsPathRooted(localPath, false))
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localPath = GetFullPathCore(null, localPath, GetFullPathOptions.None);
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string drive = GetPathRoot(localPath, false);
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if (Utils.IsNullOrWhiteSpace(drive))
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return localPath;
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Network.NativeMethods.REMOTE_NAME_INFO unc = Host.GetRemoteNameInfoCore(drive, true);
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if (!Utils.IsNullOrWhiteSpace(unc.lpConnectionName))
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// Only leave trailing backslash if "localPath" also ends with backslash.
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return localPath.EndsWith(DirectorySeparator, StringComparison.OrdinalIgnoreCase)
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? AddTrailingDirectorySeparator(unc.lpConnectionName, false)
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: RemoveTrailingDirectorySeparator(unc.lpConnectionName, false);
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// Split: localDrive[0] = "C", localDrive[1] = "\Windows"
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string[] localDrive = localPath.Split(VolumeSeparatorChar);
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// Return: "\\MachineName\C$\Windows"
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localPath = string.Format(CultureInfo.CurrentCulture, "{0}{1}{2}${3}", Host.GetUncName(), DirectorySeparatorChar, localDrive[0], localDrive[1]);
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}
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// Only leave trailing backslash if "localPath" also ends with backslash.
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addTrailingDirectorySeparator = addTrailingDirectorySeparator ||
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(localPath.EndsWith(DirectorySeparator, StringComparison.OrdinalIgnoreCase) && !removeTrailingDirectorySeparator);
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var options = (addTrailingDirectorySeparator ? GetFullPathOptions.AddTrailingDirectorySeparator : 0) |
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(removeTrailingDirectorySeparator ? GetFullPathOptions.RemoveTrailingDirectorySeparator : 0);
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return asLongPath ? GetLongPathCore(localPath, options) : localPath;
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}
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#endregion // Internal Methods
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}
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}
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