mirror of
https://github.com/wismna/ModernKeePass.git
synced 2025-10-03 15:40:18 -04:00
319 lines
9.2 KiB
C#
319 lines
9.2 KiB
C#
/*
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KeePass Password Safe - The Open-Source Password Manager
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Copyright (C) 2003-2012 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.Text;
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using System.Diagnostics;
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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 const string UpperCase = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
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public const string LowerCase = "abcdefghijklmnopqrstuvwxyz";
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public const string Digits = "0123456789";
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public const string UpperConsonants = "BCDFGHJKLMNPQRSTVWXYZ";
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public const string LowerConsonants = "bcdfghjklmnpqrstvwxyz";
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public const string UpperVowels = "AEIOU";
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public const string LowerVowels = "aeiou";
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public const string Punctuation = @",.;:";
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public const string Brackets = @"[]{}()<>";
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public const string PrintableAsciiSpecial = "!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~";
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public const string UpperHex = "0123456789ABCDEF";
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public const string LowerHex = "0123456789abcdef";
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public const string Invalid = "\t\r\n";
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public const string LookAlike = @"O0l1I|";
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private const int CharTabSize = (0x10000 / 8);
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private List<char> m_vChars = new List<char>();
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private byte[] m_vTab = new byte[CharTabSize];
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private string m_strHighAnsi = string.Empty;
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private string m_strSpecial = string.Empty;
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/// <summary>
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/// Create a new, empty character set collection object.
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/// </summary>
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public PwCharSet()
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{
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this.Initialize(true);
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}
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public PwCharSet(string strCharSet)
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{
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this.Initialize(true);
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this.Add(strCharSet);
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}
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private PwCharSet(bool bFullInitialize)
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{
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this.Initialize(bFullInitialize);
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}
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private void Initialize(bool bFullInitialize)
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{
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this.Clear();
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if(bFullInitialize == false) return;
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StringBuilder sbHighAnsi = new StringBuilder();
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for(char ch = '~'; ch < 255; ++ch)
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sbHighAnsi.Append(ch);
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m_strHighAnsi = sbHighAnsi.ToString();
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PwCharSet pcs = new PwCharSet(false);
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pcs.AddRange('!', '/');
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pcs.AddRange(':', '@');
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pcs.AddRange('[', '`');
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pcs.Remove(@"-_ ");
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pcs.Remove(PwCharSet.Brackets);
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m_strSpecial = pcs.ToString();
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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_vChars.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_vChars.Count)
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throw new ArgumentOutOfRangeException("uPos");
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return m_vChars[(int)uPos];
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}
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}
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public string SpecialChars { get { return m_strSpecial; } }
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public string HighAnsiChars { get { return m_strHighAnsi; } }
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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_vChars.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(this.Contains(ch) == false) 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(this.Contains(ch) == false)
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{
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m_vChars.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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m_vChars.Capacity = m_vChars.Count + strCharSet.Length;
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foreach(char ch in strCharSet)
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this.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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this.Add(strCharSet1);
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this.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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this.Add(strCharSet1);
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this.Add(strCharSet2);
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this.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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m_vChars.Capacity = m_vChars.Count + (chMax - chMin) + 1;
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for(char ch = chMin; ch < chMax; ++ch)
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this.Add(ch);
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this.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': this.Add(PwCharSet.LowerCase, PwCharSet.Digits); break;
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case 'A': this.Add(PwCharSet.LowerCase, PwCharSet.UpperCase,
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PwCharSet.Digits); break;
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case 'U': this.Add(PwCharSet.UpperCase, PwCharSet.Digits); break;
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case 'c': this.Add(PwCharSet.LowerConsonants); break;
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case 'C': this.Add(PwCharSet.LowerConsonants,
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PwCharSet.UpperConsonants); break;
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case 'z': this.Add(PwCharSet.UpperConsonants); break;
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case 'd': this.Add(PwCharSet.Digits); break; // Digit
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case 'h': this.Add(PwCharSet.LowerHex); break;
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case 'H': this.Add(PwCharSet.UpperHex); break;
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case 'l': this.Add(PwCharSet.LowerCase); break;
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case 'L': this.Add(PwCharSet.LowerCase, PwCharSet.UpperCase); break;
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case 'u': this.Add(PwCharSet.UpperCase); break;
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case 'p': this.Add(PwCharSet.Punctuation); break;
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case 'b': this.Add(PwCharSet.Brackets); break;
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case 's': this.Add(PwCharSet.PrintableAsciiSpecial); break;
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case 'S': this.Add(PwCharSet.UpperCase, PwCharSet.LowerCase);
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this.Add(PwCharSet.Digits, PwCharSet.PrintableAsciiSpecial); break;
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case 'v': this.Add(PwCharSet.LowerVowels); break;
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case 'V': this.Add(PwCharSet.LowerVowels, PwCharSet.UpperVowels); break;
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case 'Z': this.Add(PwCharSet.UpperVowels); break;
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case 'x': this.Add(m_strHighAnsi); 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_vChars.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(this.Contains(strCharacters) == false)
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return false;
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return this.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();
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foreach(char ch in m_vChars)
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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(this.RemoveIfAllExist(PwCharSet.UpperCase) ? 'U' : '_');
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sb.Append(this.RemoveIfAllExist(PwCharSet.LowerCase) ? 'L' : '_');
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sb.Append(this.RemoveIfAllExist(PwCharSet.Digits) ? 'D' : '_');
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sb.Append(this.RemoveIfAllExist(m_strSpecial) ? 'S' : '_');
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sb.Append(this.RemoveIfAllExist(PwCharSet.Punctuation) ? 'P' : '_');
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sb.Append(this.RemoveIfAllExist(@"-") ? 'm' : '_');
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sb.Append(this.RemoveIfAllExist(@"_") ? 'u' : '_');
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sb.Append(this.RemoveIfAllExist(@" ") ? 's' : '_');
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sb.Append(this.RemoveIfAllExist(PwCharSet.Brackets) ? 'B' : '_');
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sb.Append(this.RemoveIfAllExist(m_strHighAnsi) ? '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] != '_') this.Add(PwCharSet.UpperCase);
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if(strRanges[1] != '_') this.Add(PwCharSet.LowerCase);
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if(strRanges[2] != '_') this.Add(PwCharSet.Digits);
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if(strRanges[3] != '_') this.Add(m_strSpecial);
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if(strRanges[4] != '_') this.Add(PwCharSet.Punctuation);
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if(strRanges[5] != '_') this.Add('-');
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if(strRanges[6] != '_') this.Add('_');
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if(strRanges[7] != '_') this.Add(' ');
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if(strRanges[8] != '_') this.Add(PwCharSet.Brackets);
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if(strRanges[9] != '_') this.Add(m_strHighAnsi);
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}
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}
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}
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