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272 lines
14 KiB
272 lines
14 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 System;
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using System.IO;
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using System.Security;
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namespace Alphaleonis.Win32.Filesystem
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{
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partial class Directory
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{
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#region Decrypt
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/// <summary>[AlphaFS] Decrypts a directory that was encrypted by the current account using the Encrypt method.</summary>
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/// <exception cref="ArgumentException"/>
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/// <exception cref="ArgumentNullException"/>
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/// <exception cref="DirectoryNotFoundException"/>
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/// <exception cref="IOException"/>
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/// <exception cref="NotSupportedException"/>
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/// <exception cref="UnauthorizedAccessException"/>
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/// <param name="path">A path that describes a directory to decrypt.</param>
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/// <param name="pathFormat">Indicates the format of the path parameter(s).</param>
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[SecurityCritical]
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public static void Decrypt(string path, PathFormat pathFormat)
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{
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EncryptDecryptDirectoryCore(path, false, false, pathFormat);
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}
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/// <summary>[AlphaFS] Decrypts a directory that was encrypted by the current account using the Encrypt method.</summary>
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/// <exception cref="ArgumentException"/>
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/// <exception cref="ArgumentNullException"/>
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/// <exception cref="DirectoryNotFoundException"/>
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/// <exception cref="IOException"/>
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/// <exception cref="NotSupportedException"/>
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/// <exception cref="UnauthorizedAccessException"/>
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/// <param name="path">A path that describes a directory to decrypt.</param>
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/// <param name="recursive"><see langword="true"/> to decrypt the directory recursively. <see langword="false"/> only decrypt the directory.</param>
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/// <param name="pathFormat">Indicates the format of the path parameter(s).</param>
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[SecurityCritical]
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public static void Decrypt(string path, bool recursive, PathFormat pathFormat)
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{
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EncryptDecryptDirectoryCore(path, false, recursive, pathFormat);
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}
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/// <summary>[AlphaFS] Decrypts a directory that was encrypted by the current account using the Encrypt method.</summary>
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/// <exception cref="ArgumentException"/>
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/// <exception cref="ArgumentNullException"/>
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/// <exception cref="DirectoryNotFoundException"/>
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/// <exception cref="IOException"/>
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/// <exception cref="NotSupportedException"/>
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/// <exception cref="UnauthorizedAccessException"/>
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/// <param name="path">A path that describes a directory to decrypt.</param>
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[SecurityCritical]
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public static void Decrypt(string path)
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{
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EncryptDecryptDirectoryCore(path, false, false, PathFormat.RelativePath);
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}
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/// <summary>[AlphaFS] Decrypts a directory that was encrypted by the current account using the Encrypt method.</summary>
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/// <exception cref="ArgumentException"/>
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/// <exception cref="ArgumentNullException"/>
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/// <exception cref="DirectoryNotFoundException"/>
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/// <exception cref="IOException"/>
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/// <exception cref="NotSupportedException"/>
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/// <exception cref="UnauthorizedAccessException"/>
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/// <param name="path">A path that describes a directory to decrypt.</param>
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/// <param name="recursive"><see langword="true"/> to decrypt the directory recursively. <see langword="false"/> only decrypt the directory.</param>
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[SecurityCritical]
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public static void Decrypt(string path, bool recursive)
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{
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EncryptDecryptDirectoryCore(path, false, recursive, PathFormat.RelativePath);
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}
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#endregion // Decrypt
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#region Encrypt
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/// <summary>[AlphaFS] Encrypts a directory so that only the account used to encrypt the directory can decrypt it.</summary>
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/// <exception cref="ArgumentException"/>
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/// <exception cref="ArgumentNullException"/>
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/// <exception cref="DirectoryNotFoundException"/>
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/// <exception cref="IOException"/>
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/// <exception cref="NotSupportedException"/>
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/// <exception cref="UnauthorizedAccessException"/>
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/// <param name="path">A path that describes a directory to encrypt.</param>
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/// <param name="pathFormat">Indicates the format of the path parameter(s).</param>
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[SecurityCritical]
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public static void Encrypt(string path, PathFormat pathFormat)
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{
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EncryptDecryptDirectoryCore(path, true, false, pathFormat);
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}
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/// <summary>[AlphaFS] Encrypts a directory so that only the account used to encrypt the directory can decrypt it.</summary>
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/// <exception cref="ArgumentException"/>
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/// <exception cref="ArgumentNullException"/>
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/// <exception cref="DirectoryNotFoundException"/>
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/// <exception cref="IOException"/>
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/// <exception cref="NotSupportedException"/>
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/// <exception cref="UnauthorizedAccessException"/>
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/// <param name="path">A path that describes a directory to encrypt.</param>
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/// <param name="recursive"><see langword="true"/> to encrypt the directory recursively. <see langword="false"/> only encrypt the directory.</param>
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/// <param name="pathFormat">Indicates the format of the path parameter(s).</param>
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[SecurityCritical]
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public static void Encrypt(string path, bool recursive, PathFormat pathFormat)
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{
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EncryptDecryptDirectoryCore(path, true, recursive, pathFormat);
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}
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/// <summary>[AlphaFS] Encrypts a directory so that only the account used to encrypt the directory can decrypt it.</summary>
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/// <exception cref="ArgumentException"/>
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/// <exception cref="ArgumentNullException"/>
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/// <exception cref="DirectoryNotFoundException"/>
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/// <exception cref="IOException"/>
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/// <exception cref="NotSupportedException"/>
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/// <exception cref="UnauthorizedAccessException"/>
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/// <param name="path">A path that describes a directory to encrypt.</param>
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[SecurityCritical]
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public static void Encrypt(string path)
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{
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EncryptDecryptDirectoryCore(path, true, false, PathFormat.RelativePath);
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}
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/// <summary>[AlphaFS] Encrypts a directory so that only the account used to encrypt the directory can decrypt it.</summary>
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/// <exception cref="ArgumentException"/>
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/// <exception cref="ArgumentNullException"/>
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/// <exception cref="DirectoryNotFoundException"/>
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/// <exception cref="IOException"/>
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/// <exception cref="NotSupportedException"/>
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/// <exception cref="UnauthorizedAccessException"/>
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/// <param name="path">A path that describes a directory to encrypt.</param>
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/// <param name="recursive"><see langword="true"/> to encrypt the directory recursively. <see langword="false"/> only encrypt the directory.</param>
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[SecurityCritical]
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public static void Encrypt(string path, bool recursive)
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{
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EncryptDecryptDirectoryCore(path, true, recursive, PathFormat.RelativePath);
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}
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#endregion // Encrypt
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#region DisableEncryption
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/// <summary>[AlphaFS] Disables encryption of the specified directory and the files in it.
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/// <para>This method only creates/modifies the file "Desktop.ini" in the root of <paramref name="path"/> and disables encryption by writing: "Disable=1"</para>
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/// <para>This method does not affect encryption of files and subdirectories below the indicated directory.</para>
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/// </summary>
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/// <param name="path">The name of the directory for which to disable encryption.</param>
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/// <param name="pathFormat">Indicates the format of the path parameter(s).</param>
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[SecurityCritical]
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public static void DisableEncryption(string path, PathFormat pathFormat)
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{
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EnableDisableEncryptionCore(path, false, pathFormat);
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}
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/// <summary>[AlphaFS] Disables encryption of the specified directory and the files in it.
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/// <para>This method only creates/modifies the file "Desktop.ini" in the root of <paramref name="path"/> and disables encryption by writing: "Disable=1"</para>
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/// <para>This method does not affect encryption of files and subdirectories below the indicated directory.</para>
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/// </summary>
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/// <param name="path">The name of the directory for which to disable encryption.</param>
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[SecurityCritical]
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public static void DisableEncryption(string path)
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{
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EnableDisableEncryptionCore(path, false, PathFormat.RelativePath);
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}
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#endregion // DisableEncryption
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#region EnableEncryption
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/// <summary>[AlphaFS] Enables encryption of the specified directory and the files in it.
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/// <para>This method only creates/modifies the file "Desktop.ini" in the root of <paramref name="path"/> and enables encryption by writing: "Disable=0"</para>
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/// <para>This method does not affect encryption of files and subdirectories below the indicated directory.</para>
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/// </summary>
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/// <param name="path">The name of the directory for which to enable encryption.</param>
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/// <param name="pathFormat">Indicates the format of the path parameter(s).</param>
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[SecurityCritical]
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public static void EnableEncryption(string path, PathFormat pathFormat)
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{
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EnableDisableEncryptionCore(path, true, pathFormat);
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}
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/// <summary>[AlphaFS] Enables encryption of the specified directory and the files in it.
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/// <para>This method only creates/modifies the file "Desktop.ini" in the root of <paramref name="path"/> and enables encryption by writing: "Disable=0"</para>
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/// <para>This method does not affect encryption of files and subdirectories below the indicated directory.</para>
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/// </summary>
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/// <param name="path">The name of the directory for which to enable encryption.</param>
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[SecurityCritical]
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public static void EnableEncryption(string path)
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{
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EnableDisableEncryptionCore(path, true, PathFormat.RelativePath);
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}
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#endregion // EnableEncryption
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#region Internal Methods
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/// <summary>Enables/disables encryption of the specified directory and the files in it.
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/// <para>This method only creates/modifies the file "Desktop.ini" in the root of <paramref name="path"/> and enables/disables encryption by writing: "Disable=0" or "Disable=1".</para>
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/// <para>This method does not affect encryption of files and subdirectories below the indicated directory.</para>
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/// </summary>
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/// <param name="path">The name of the directory for which to enable encryption.</param>
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/// <param name="enable"><see langword="true"/> enabled encryption, <see langword="false"/> disables encryption.</param>
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/// <param name="pathFormat">Indicates the format of the path parameter(s).</param>
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[SecurityCritical]
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internal static void EnableDisableEncryptionCore(string path, bool enable, PathFormat pathFormat)
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{
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if (Utils.IsNullOrWhiteSpace(path))
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throw new ArgumentNullException("path");
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string pathLp = Path.GetExtendedLengthPathCore(null, path, pathFormat, GetFullPathOptions.RemoveTrailingDirectorySeparator | GetFullPathOptions.FullCheck);
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// EncryptionDisable()
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// In the ANSI version of this function, the name is limited to 248 characters.
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// To extend this limit to 32,767 wide characters, call the Unicode version of the function and prepend "\\?\" to the path.
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// 2013-01-13: MSDN does not confirm LongPath usage but a Unicode version of this function exists.
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if (!NativeMethods.EncryptionDisable(pathLp, !enable))
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NativeError.ThrowException(pathLp);
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}
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/// <summary>Decrypts/encrypts a directory recursively so that only the account used to encrypt the directory can decrypt it.</summary>
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/// <exception cref="ArgumentException"/>
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/// <exception cref="ArgumentNullException"/>
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/// <exception cref="DirectoryNotFoundException"/>
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/// <exception cref="IOException"/>
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/// <exception cref="NotSupportedException"/>
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/// <exception cref="UnauthorizedAccessException"/>
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/// <param name="path">A path that describes a directory to encrypt.</param>
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/// <param name="encrypt"><see langword="true"/> encrypt, <see langword="false"/> decrypt.</param>
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/// <param name="recursive"><see langword="true"/> to decrypt the directory recursively. <see langword="false"/> only decrypt files and directories in the root of <paramref name="path"/>.</param>
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/// <param name="pathFormat">Indicates the format of the path parameter(s).</param>
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[SecurityCritical]
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internal static void EncryptDecryptDirectoryCore(string path, bool encrypt, bool recursive, PathFormat pathFormat)
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{
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string pathLp = Path.GetExtendedLengthPathCore(null, path, pathFormat, GetFullPathOptions.RemoveTrailingDirectorySeparator | GetFullPathOptions.FullCheck);
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var options = DirectoryEnumerationOptions.FilesAndFolders | DirectoryEnumerationOptions.AsLongPath;
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// Process folders and files when recursive.
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if (recursive)
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{
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options |= DirectoryEnumerationOptions.Recursive;
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foreach (string fsei in EnumerateFileSystemEntryInfosCore<string>(null, pathLp, Path.WildcardStarMatchAll, options, PathFormat.LongFullPath))
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File.EncryptDecryptFileCore(true, fsei, encrypt, PathFormat.LongFullPath);
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}
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// Process the root folder, the given path.
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File.EncryptDecryptFileCore(true, pathLp, encrypt, PathFormat.LongFullPath);
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}
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#endregion // Internal Methods
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}
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}
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