| | | 1 | | // Copyright © 2021-present Hibi_10000 |
| | | 2 | | // |
| | | 3 | | // This file is part of HashCalculator program. |
| | | 4 | | // |
| | | 5 | | // This program is free software: you can redistribute it and/or modify |
| | | 6 | | // it under the terms of the GNU General Public License as published by |
| | | 7 | | // the Free Software Foundation, either version 3 of the License, or |
| | | 8 | | // (at your option) any later version. |
| | | 9 | | // |
| | | 10 | | // This program is distributed in the hope that it will be useful, |
| | | 11 | | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| | | 12 | | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| | | 13 | | // GNU General Public License for more details. |
| | | 14 | | // |
| | | 15 | | // You should have received a copy of the GNU General Public License |
| | | 16 | | // along with this program. If not, see <http://www.gnu.org/licenses/>. |
| | | 17 | | |
| | | 18 | | using System; |
| | | 19 | | using System.Collections.Generic; |
| | | 20 | | using System.Collections.Immutable; |
| | | 21 | | using System.IO; |
| | | 22 | | using System.IO.Hashing; |
| | | 23 | | using System.Linq; |
| | | 24 | | using System.Security.Cryptography; |
| | | 25 | | |
| | | 26 | | namespace Hash.Core; |
| | | 27 | | |
| | | 28 | | public static class HashCalculate |
| | | 29 | | { |
| | | 30 | | internal class HashType |
| | | 31 | | { |
| | | 32 | | internal static readonly ImmutableDictionary<string, HashType> Types = new Dictionary<string, HashType> |
| | | 33 | | { |
| | | 34 | | ["MD5" ] = new(GetProvider( MD5 .Create ), true ), |
| | | 35 | | ["SHA1" ] = new(GetProvider( SHA1 .Create ), true ), |
| | | 36 | | ["SHA256" ] = new(GetProvider( SHA256 .Create ), true ), |
| | | 37 | | ["SHA384" ] = new(GetProvider( SHA384 .Create ), true ), |
| | | 38 | | ["SHA512" ] = new(GetProvider( SHA512 .Create ), true ), |
| | | 39 | | ["SHA3-256" ] = new(GetProvider( SHA3_256.Create ), true, SHA3_256.IsSupported), |
| | | 40 | | ["SHA3-384" ] = new(GetProvider( SHA3_384.Create ), true, SHA3_384.IsSupported), |
| | | 41 | | ["SHA3-512" ] = new(GetProvider( SHA3_512.Create ), true, SHA3_512.IsSupported), |
| | | 42 | | ["CRC8" ] = new(GetProvider(() => new CRC8_CCITT() ) ), |
| | | 43 | | ["CRC16-CCITT"] = new(GetProvider(() => new CRC16_CCITT() ), true ), |
| | | 44 | | ["CRC16-IBM" ] = new(GetProvider(() => new CRC16_IBM() ) ), |
| | | 45 | | ["CRC32" ] = new(GetProvider(() => new CRC32() ), true ), |
| | | 46 | | ["CRC32C" ] = new(GetProvider(() => new CRC32C() ) ), |
| | | 47 | | ["CRC64-ECMA" ] = new(GetProvider(() => new CRC64_ECMA() ), true ), |
| | | 48 | | ["CRC64-ISO" ] = new(GetProvider(() => new CRC64_ISO() ) ), |
| | | 49 | | ["CRC64-XZ" ] = new(GetProvider(() => new CRC64_XZ() ), true ), |
| | | 50 | | ["RIPEMD160" ] = new(GetProvider(() => new RIPEMD160Managed()) ), |
| | | 51 | | ["xxHash32" ] = new(GetProvider(() => new XxHash32() ) ), |
| | | 52 | | ["xxHash64" ] = new(GetProvider(() => new XxHash64() ) ), |
| | | 53 | | ["xxHash3" ] = new(GetProvider(() => new XxHash3() ), true ), |
| | | 54 | | ["xxHash128" ] = new(GetProvider(() => new XxHash128() ) ), |
| | | 55 | | }.ToImmutableDictionary(); |
| | | 56 | | |
| | | 57 | | internal readonly IHashProvider Provider; |
| | | 58 | | internal readonly bool Visible; |
| | | 59 | | internal readonly bool Supported; |
| | | 60 | | |
| | | 61 | | private HashType(IHashProvider provider, bool visible = false, bool supported = true) |
| | | 62 | | { |
| | | 63 | | Provider = provider; |
| | | 64 | | Visible = visible; |
| | | 65 | | Supported = supported; |
| | | 66 | | } |
| | | 67 | | |
| | | 68 | | private static HashProvider GetProvider(Func<HashAlgorithm> providerFunc) |
| | | 69 | | { |
| | | 70 | | return new HashProvider(providerFunc); |
| | | 71 | | } |
| | | 72 | | |
| | | 73 | | private static NonCryptoHashProvider GetProvider(Func<NonCryptographicHashAlgorithm> providerFunc) |
| | | 74 | | { |
| | | 75 | | return new NonCryptoHashProvider(providerFunc); |
| | | 76 | | } |
| | | 77 | | |
| | | 78 | | internal interface IHashProvider |
| | | 79 | | { |
| | | 80 | | internal byte[] ComputeHash(Stream stream); |
| | | 81 | | } |
| | | 82 | | |
| | | 83 | | private class HashProvider(Func<HashAlgorithm> providerFunc) : IHashProvider |
| | | 84 | | { |
| | | 85 | | public byte[] ComputeHash(Stream stream) |
| | | 86 | | { |
| | | 87 | | return providerFunc().ComputeHash(stream); |
| | | 88 | | } |
| | | 89 | | } |
| | | 90 | | |
| | 1 | 91 | | private class NonCryptoHashProvider(Func<NonCryptographicHashAlgorithm> providerFunc) : IHashProvider |
| | | 92 | | { |
| | | 93 | | public byte[] ComputeHash(Stream stream) |
| | 1 | 94 | | { |
| | 1 | 95 | | NonCryptographicHashAlgorithm provider = providerFunc(); |
| | 1 | 96 | | provider.Append(stream); |
| | 1 | 97 | | return provider.GetCurrentHash(); |
| | 1 | 98 | | } |
| | | 99 | | } |
| | | 100 | | } |
| | | 101 | | |
| | | 102 | | public static string[] GetHashTypeNames(bool includeHidden = false) |
| | | 103 | | { |
| | | 104 | | return ( |
| | | 105 | | from type in HashType.Types |
| | | 106 | | where type.Value.Supported && (includeHidden || type.Value.Visible) |
| | | 107 | | select type.Key |
| | | 108 | | ).ToArray(); |
| | | 109 | | } |
| | | 110 | | |
| | | 111 | | public static string? GetHash(string hashType, string filePath, bool upper, bool hyphen) |
| | | 112 | | { |
| | | 113 | | if (!HashType.Types.ContainsKey(hashType)) return null; |
| | | 114 | | if (!File.Exists(filePath)) return null; |
| | | 115 | | using FileStream fs = File.Open(filePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite); |
| | | 116 | | return GetHash(hashType, fs, upper, hyphen); |
| | | 117 | | } |
| | | 118 | | |
| | | 119 | | internal static string GetHash(string hashType, Stream stream, bool upper, bool hyphen) |
| | | 120 | | { |
| | | 121 | | byte[] bs = HashType.Types[hashType].Provider.ComputeHash(stream); |
| | | 122 | | string returnStr = BitConverter.ToString(bs); |
| | | 123 | | returnStr = upper ? returnStr.ToUpperInvariant() : returnStr.ToLowerInvariant(); |
| | | 124 | | return hyphen ? returnStr : returnStr.Replace("-", ""); |
| | | 125 | | } |
| | | 126 | | } |