mirror of
https://github.com/wismna/ModernKeePassLib.git
synced 2025-10-03 15:40:20 -04:00
307 lines
9.2 KiB
C#
307 lines
9.2 KiB
C#
/*
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KeePass Password Safe - The Open-Source Password Manager
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Copyright (C) 2003-2020 Dominik Reichl <dominik.reichl@t-online.de>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Text;
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namespace ModernKeePassLib.Cryptography.PasswordGenerator
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{
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public sealed class PwCharSet
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{
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public static readonly string UpperCase = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
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public static readonly string LowerCase = "abcdefghijklmnopqrstuvwxyz";
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public static readonly string Digits = "0123456789";
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public static readonly string UpperConsonants = "BCDFGHJKLMNPQRSTVWXYZ";
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public static readonly string LowerConsonants = "bcdfghjklmnpqrstvwxyz";
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public static readonly string UpperVowels = "AEIOU";
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public static readonly string LowerVowels = "aeiou";
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public static readonly string Punctuation = @",.;:";
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public static readonly string Brackets = @"[]{}()<>";
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public static readonly string Special = "!\"#$%&'*+,./:;=?@\\^`|~";
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public static readonly string PrintableAsciiSpecial = "!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~";
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public static readonly string UpperHex = "0123456789ABCDEF";
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public static readonly string LowerHex = "0123456789abcdef";
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public static readonly string LookAlike = @"O0l1I|";
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/// <summary>
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/// Latin-1 Supplement except U+00A0 (NBSP) and U+00AD (SHY).
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/// </summary>
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public static readonly string Latin1S =
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"\u00A1\u00A2\u00A3\u00A4\u00A5\u00A6\u00A7" +
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"\u00A8\u00A9\u00AA\u00AB\u00AC\u00AE\u00AF" +
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"\u00B0\u00B1\u00B2\u00B3\u00B4\u00B5\u00B6\u00B7" +
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"\u00B8\u00B9\u00BA\u00BB\u00BC\u00BD\u00BE\u00BF" +
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"\u00C0\u00C1\u00C2\u00C3\u00C4\u00C5\u00C6\u00C7" +
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"\u00C8\u00C9\u00CA\u00CB\u00CC\u00CD\u00CE\u00CF" +
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"\u00D0\u00D1\u00D2\u00D3\u00D4\u00D5\u00D6\u00D7" +
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"\u00D8\u00D9\u00DA\u00DB\u00DC\u00DD\u00DE\u00DF" +
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"\u00E0\u00E1\u00E2\u00E3\u00E4\u00E5\u00E6\u00E7" +
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"\u00E8\u00E9\u00EA\u00EB\u00EC\u00ED\u00EE\u00EF" +
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"\u00F0\u00F1\u00F2\u00F3\u00F4\u00F5\u00F6\u00F7" +
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"\u00F8\u00F9\u00FA\u00FB\u00FC\u00FD\u00FE\u00FF";
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internal static readonly string MenuAccels = PwCharSet.LowerCase + PwCharSet.Digits;
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[Obsolete]
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public static string SpecialChars { get { return PwCharSet.Special; } }
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[Obsolete]
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public static string HighAnsiChars { get { return PwCharSet.Latin1S; } }
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private const int CharTabSize = 0x10000 / 8;
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private List<char> m_lChars = new List<char>();
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private byte[] m_vTab = new byte[CharTabSize];
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/// <summary>
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/// Create a new, empty character set.
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/// </summary>
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public PwCharSet()
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{
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Debug.Assert(PwCharSet.Latin1S.Length == (16 * 6 - 2));
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}
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public PwCharSet(string strCharSet)
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{
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Add(strCharSet);
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}
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/// <summary>
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/// Number of characters in this set.
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/// </summary>
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public uint Size
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{
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get { return (uint)m_lChars.Count; }
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}
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/// <summary>
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/// Get a character of the set using an index.
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/// </summary>
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/// <param name="uPos">Index of the character to get.</param>
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/// <returns>Character at the specified position. If the index is invalid,
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/// an <c>ArgumentOutOfRangeException</c> is thrown.</returns>
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public char this[uint uPos]
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{
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get
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{
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if(uPos >= (uint)m_lChars.Count)
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throw new ArgumentOutOfRangeException("uPos");
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return m_lChars[(int)uPos];
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}
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}
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/// <summary>
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/// Remove all characters from this set.
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/// </summary>
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public void Clear()
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{
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m_lChars.Clear();
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Array.Clear(m_vTab, 0, m_vTab.Length);
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}
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public bool Contains(char ch)
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{
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return (((m_vTab[ch / 8] >> (ch % 8)) & 1) != char.MinValue);
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}
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public bool Contains(string strCharacters)
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{
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Debug.Assert(strCharacters != null);
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if(strCharacters == null) throw new ArgumentNullException("strCharacters");
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foreach(char ch in strCharacters)
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{
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if(!Contains(ch)) return false;
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}
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return true;
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}
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/// <summary>
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/// Add characters to the set.
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/// </summary>
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/// <param name="ch">Character to add.</param>
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public void Add(char ch)
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{
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if(ch == char.MinValue) { Debug.Assert(false); return; }
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if(!Contains(ch))
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{
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m_lChars.Add(ch);
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m_vTab[ch / 8] |= (byte)(1 << (ch % 8));
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}
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}
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/// <summary>
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/// Add characters to the set.
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/// </summary>
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/// <param name="strCharSet">String containing characters to add.</param>
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public void Add(string strCharSet)
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{
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Debug.Assert(strCharSet != null);
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if(strCharSet == null) throw new ArgumentNullException("strCharSet");
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foreach(char ch in strCharSet)
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Add(ch);
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}
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public void Add(string strCharSet1, string strCharSet2)
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{
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Add(strCharSet1);
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Add(strCharSet2);
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}
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public void Add(string strCharSet1, string strCharSet2, string strCharSet3)
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{
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Add(strCharSet1);
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Add(strCharSet2);
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Add(strCharSet3);
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}
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public void AddRange(char chMin, char chMax)
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{
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for(char ch = chMin; ch < chMax; ++ch)
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Add(ch);
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Add(chMax);
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}
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public bool AddCharSet(char chCharSetIdentifier)
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{
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bool bResult = true;
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switch(chCharSetIdentifier)
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{
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case 'a': Add(PwCharSet.LowerCase, PwCharSet.Digits); break;
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case 'A': Add(PwCharSet.LowerCase, PwCharSet.UpperCase,
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PwCharSet.Digits); break;
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case 'U': Add(PwCharSet.UpperCase, PwCharSet.Digits); break;
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case 'c': Add(PwCharSet.LowerConsonants); break;
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case 'C': Add(PwCharSet.LowerConsonants,
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PwCharSet.UpperConsonants); break;
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case 'z': Add(PwCharSet.UpperConsonants); break;
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case 'd': Add(PwCharSet.Digits); break; // Digit
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case 'h': Add(PwCharSet.LowerHex); break;
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case 'H': Add(PwCharSet.UpperHex); break;
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case 'l': Add(PwCharSet.LowerCase); break;
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case 'L': Add(PwCharSet.LowerCase, PwCharSet.UpperCase); break;
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case 'u': Add(PwCharSet.UpperCase); break;
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case 'p': Add(PwCharSet.Punctuation); break;
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case 'b': Add(PwCharSet.Brackets); break;
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case 's': Add(PwCharSet.PrintableAsciiSpecial); break;
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case 'S': Add(PwCharSet.UpperCase, PwCharSet.LowerCase);
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Add(PwCharSet.Digits, PwCharSet.PrintableAsciiSpecial); break;
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case 'v': Add(PwCharSet.LowerVowels); break;
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case 'V': Add(PwCharSet.LowerVowels, PwCharSet.UpperVowels); break;
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case 'Z': Add(PwCharSet.UpperVowels); break;
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case 'x': Add(PwCharSet.Latin1S); break;
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default: bResult = false; break;
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}
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return bResult;
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}
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public bool Remove(char ch)
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{
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m_vTab[ch / 8] &= (byte)(~(1 << (ch % 8)));
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return m_lChars.Remove(ch);
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}
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public bool Remove(string strCharacters)
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{
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Debug.Assert(strCharacters != null);
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if(strCharacters == null) throw new ArgumentNullException("strCharacters");
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bool bResult = true;
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foreach(char ch in strCharacters)
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{
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if(!Remove(ch)) bResult = false;
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}
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return bResult;
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}
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public bool RemoveIfAllExist(string strCharacters)
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{
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Debug.Assert(strCharacters != null);
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if(strCharacters == null) throw new ArgumentNullException("strCharacters");
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if(!Contains(strCharacters))
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return false;
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return Remove(strCharacters);
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}
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/// <summary>
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/// Convert the character set to a string containing all its characters.
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/// </summary>
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/// <returns>String containing all character set characters.</returns>
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public override string ToString()
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{
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StringBuilder sb = new StringBuilder(m_lChars.Count);
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foreach(char ch in m_lChars)
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sb.Append(ch);
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return sb.ToString();
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}
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public string PackAndRemoveCharRanges()
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{
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StringBuilder sb = new StringBuilder();
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sb.Append(RemoveIfAllExist(PwCharSet.UpperCase) ? 'U' : '_');
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sb.Append(RemoveIfAllExist(PwCharSet.LowerCase) ? 'L' : '_');
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sb.Append(RemoveIfAllExist(PwCharSet.Digits) ? 'D' : '_');
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sb.Append(RemoveIfAllExist(PwCharSet.Special) ? 'S' : '_');
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sb.Append(RemoveIfAllExist(PwCharSet.Punctuation) ? 'P' : '_');
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sb.Append(RemoveIfAllExist("-") ? 'm' : '_');
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sb.Append(RemoveIfAllExist("_") ? 'u' : '_');
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sb.Append(RemoveIfAllExist(" ") ? 's' : '_');
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sb.Append(RemoveIfAllExist(PwCharSet.Brackets) ? 'B' : '_');
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sb.Append(RemoveIfAllExist(PwCharSet.Latin1S) ? 'H' : '_');
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return sb.ToString();
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}
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public void UnpackCharRanges(string strRanges)
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{
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if(strRanges == null) { Debug.Assert(false); return; }
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if(strRanges.Length < 10) { Debug.Assert(false); return; }
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if(strRanges[0] != '_') Add(PwCharSet.UpperCase);
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if(strRanges[1] != '_') Add(PwCharSet.LowerCase);
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if(strRanges[2] != '_') Add(PwCharSet.Digits);
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if(strRanges[3] != '_') Add(PwCharSet.Special);
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if(strRanges[4] != '_') Add(PwCharSet.Punctuation);
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if(strRanges[5] != '_') Add('-');
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if(strRanges[6] != '_') Add('_');
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if(strRanges[7] != '_') Add(' ');
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if(strRanges[8] != '_') Add(PwCharSet.Brackets);
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if(strRanges[9] != '_') Add(PwCharSet.Latin1S);
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}
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}
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}
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