initial commit
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i2p
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using Quasar.Common.Cryptography;
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using System.IO;
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using System.Linq;
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using System.Text;
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namespace Quasar.Common.Helpers
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{
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public static class FileHelper
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{
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/// <summary>
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/// List of illegal path characters.
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/// </summary>
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private static readonly char[] IllegalPathChars = Path.GetInvalidPathChars().Union(Path.GetInvalidFileNameChars()).ToArray();
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/// <summary>
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/// Indicates if the given path contains illegal characters.
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/// </summary>
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/// <param name="path">The path to check.</param>
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/// <returns>Returns <value>true</value> if the path contains illegal characters, otherwise <value>false</value>.</returns>
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public static bool HasIllegalCharacters(string path)
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{
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return path.Any(c => IllegalPathChars.Contains(c));
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}
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/// <summary>
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/// Gets a random file name.
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/// </summary>
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/// <param name="length">The length of the file name.</param>
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/// <param name="extension">The file extension including the dot, e.g. <value>.exe</value>.</param>
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/// <returns>The random file name.</returns>
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public static string GetRandomFilename(int length, string extension = "")
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{
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return string.Concat(StringHelper.GetRandomString(length), extension);
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}
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/// <summary>
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/// Gets a path to an unused temp file.
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/// </summary>
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/// <param name="extension">The file extension including the dot, e.g. <value>.exe</value>.</param>
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/// <returns>The path to the temp file.</returns>
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public static string GetTempFilePath(string extension)
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{
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string tempFilePath;
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do
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{
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tempFilePath = Path.Combine(Path.GetTempPath(), GetRandomFilename(12, extension));
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} while (File.Exists(tempFilePath));
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return tempFilePath;
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}
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/// <summary>
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/// Indicates if the given file header contains the executable identifier (magic number) 'MZ'.
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/// </summary>
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/// <param name="binary">The binary file to check.</param>
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/// <returns>Returns <value>true</value> for valid executable identifiers, otherwise <value>false</value>.</returns>
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public static bool HasExecutableIdentifier(byte[] binary)
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{
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if (binary.Length < 2) return false;
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return (binary[0] == 'M' && binary[1] == 'Z') || (binary[0] == 'Z' && binary[1] == 'M');
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}
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/// <summary>
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/// Deletes the zone identifier for the given file path.
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/// </summary>
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/// <param name="filePath">The file path.</param>
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/// <returns>Returns <value>true</value> if the deletion was successful, otherwise <value>false</value>.</returns>
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public static bool DeleteZoneIdentifier(string filePath)
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{
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return NativeMethods.DeleteFile(filePath + ":Zone.Identifier");
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}
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/// <summary>
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/// Appends text to a log file.
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/// </summary>
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/// <param name="filename">The filename of the log.</param>
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/// <param name="appendText">The text to append.</param>
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/// <param name="aes">The AES instance.</param>
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public static void WriteLogFile(string filename, string appendText, Aes256 aes)
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{
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appendText = ReadLogFile(filename, aes) + appendText;
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using (FileStream fStream = File.Open(filename, FileMode.Create, FileAccess.Write))
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{
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byte[] data = aes.Encrypt(Encoding.UTF8.GetBytes(appendText));
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fStream.Seek(0, SeekOrigin.Begin);
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fStream.Write(data, 0, data.Length);
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}
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}
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/// <summary>
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/// Reads a log file.
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/// </summary>
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/// <param name="filename">The filename of the log.</param>
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/// <param name="aes">The AES instance.</param>
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public static string ReadLogFile(string filename, Aes256 aes)
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{
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return File.Exists(filename) ? Encoding.UTF8.GetString(aes.Decrypt(File.ReadAllBytes(filename))) : string.Empty;
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}
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}
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}
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@@ -0,0 +1,120 @@
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using System;
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using System.Management;
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using System.Text.RegularExpressions;
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namespace Quasar.Common.Helpers
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{
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public static class PlatformHelper
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{
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/// <summary>
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/// Initializes the <see cref="PlatformHelper"/> class.
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/// </summary>
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static PlatformHelper()
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{
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Win32NT = Environment.OSVersion.Platform == PlatformID.Win32NT;
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XpOrHigher = Win32NT && Environment.OSVersion.Version.Major >= 5;
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VistaOrHigher = Win32NT && Environment.OSVersion.Version.Major >= 6;
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SevenOrHigher = Win32NT && (Environment.OSVersion.Version >= new Version(6, 1));
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EightOrHigher = Win32NT && (Environment.OSVersion.Version >= new Version(6, 2, 9200));
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EightPointOneOrHigher = Win32NT && (Environment.OSVersion.Version >= new Version(6, 3));
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TenOrHigher = Win32NT && (Environment.OSVersion.Version >= new Version(10, 0));
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RunningOnMono = Type.GetType("Mono.Runtime") != null;
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Name = "Unknown OS";
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using (var searcher = new ManagementObjectSearcher("SELECT Caption FROM Win32_OperatingSystem"))
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{
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foreach (ManagementObject os in searcher.Get())
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{
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Name = os["Caption"].ToString();
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break;
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}
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}
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Name = Regex.Replace(Name, "^.*(?=Windows)", "").TrimEnd().TrimStart(); // Remove everything before first match "Windows" and trim end & start
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Is64Bit = Environment.Is64BitOperatingSystem;
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FullName = $"{Name} {(Is64Bit ? 64 : 32)} Bit";
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}
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/// <summary>
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/// Gets the full name of the operating system running on this computer (including the edition and architecture).
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/// </summary>
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public static string FullName { get; }
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/// <summary>
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/// Gets the name of the operating system running on this computer (including the edition).
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/// </summary>
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public static string Name { get; }
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/// <summary>
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/// Determines whether the Operating System is 32 or 64-bit.
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/// </summary>
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/// <value>
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/// <c>true</c> if the Operating System is 64-bit, otherwise <c>false</c> for 32-bit.
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/// </value>
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public static bool Is64Bit { get; }
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/// <summary>
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/// Returns a indicating whether the application is running in Mono runtime.
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/// </summary>
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/// <value>
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/// <c>true</c> if the application is running in Mono runtime; otherwise, <c>false</c>.
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/// </value>
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public static bool RunningOnMono { get; }
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/// <summary>
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/// Returns a indicating whether the Operating System is Windows 32 NT based.
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/// </summary>
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/// <value>
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/// <c>true</c> if the Operating System is Windows 32 NT based; otherwise, <c>false</c>.
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/// </value>
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public static bool Win32NT { get; }
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/// <summary>
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/// Returns a value indicating whether the Operating System is Windows XP or higher.
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/// </summary>
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/// <value>
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/// <c>true</c> if the Operating System is Windows XP or higher; otherwise, <c>false</c>.
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/// </value>
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public static bool XpOrHigher { get; }
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/// <summary>
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/// Returns a value indicating whether the Operating System is Windows Vista or higher.
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/// </summary>
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/// <value>
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/// <c>true</c> if the Operating System is Windows Vista or higher; otherwise, <c>false</c>.
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/// </value>
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public static bool VistaOrHigher { get; }
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/// <summary>
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/// Returns a value indicating whether the Operating System is Windows 7 or higher.
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/// </summary>
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/// <value>
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/// <c>true</c> if the Operating System is Windows 7 or higher; otherwise, <c>false</c>.
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/// </value>
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public static bool SevenOrHigher { get; }
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/// <summary>
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/// Returns a value indicating whether the Operating System is Windows 8 or higher.
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/// </summary>
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/// <value>
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/// <c>true</c> if the Operating System is Windows 8 or higher; otherwise, <c>false</c>.
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/// </value>
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public static bool EightOrHigher { get; }
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/// <summary>
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/// Returns a value indicating whether the Operating System is Windows 8.1 or higher.
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/// </summary>
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/// <value>
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/// <c>true</c> if the Operating System is Windows 8.1 or higher; otherwise, <c>false</c>.
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/// </value>
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public static bool EightPointOneOrHigher { get; }
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/// <summary>
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/// Returns a value indicating whether the Operating System is Windows 10 or higher.
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/// </summary>
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/// <value>
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/// <c>true</c> if the Operating System is Windows 10 or higher; otherwise, <c>false</c>.
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/// </value>
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public static bool TenOrHigher { get; }
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}
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}
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@@ -0,0 +1,80 @@
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using Quasar.Common.Utilities;
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using System.Text;
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using System.Text.RegularExpressions;
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namespace Quasar.Common.Helpers
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{
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public static class StringHelper
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{
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/// <summary>
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/// Available alphabet for generation of random strings.
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/// </summary>
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private const string Alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
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/// <summary>
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/// Abbreviations of file sizes.
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/// </summary>
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private static readonly string[] Sizes = { "B", "KB", "MB", "GB", "TB", "PB" };
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/// <summary>
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/// Random number generator.
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/// </summary>
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private static readonly SafeRandom Random = new SafeRandom();
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/// <summary>
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/// Gets a random string with given length.
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/// </summary>
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/// <param name="length">The length of the random string.</param>
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/// <returns>A random string.</returns>
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public static string GetRandomString(int length)
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{
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StringBuilder randomName = new StringBuilder(length);
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for (int i = 0; i < length; i++)
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randomName.Append(Alphabet[Random.Next(Alphabet.Length)]);
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return randomName.ToString();
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}
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/// <summary>
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/// Gets the human readable file size for a given size.
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/// </summary>
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/// <param name="size">The file size in bytes.</param>
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/// <returns>The human readable file size.</returns>
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public static string GetHumanReadableFileSize(long size)
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{
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double len = size;
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int order = 0;
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while (len >= 1024 && order + 1 < Sizes.Length)
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{
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order++;
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len = len / 1024;
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}
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return $"{len:0.##} {Sizes[order]}";
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}
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/// <summary>
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/// Gets the formatted MAC address.
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/// </summary>
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/// <param name="macAddress">The unformatted MAC address.</param>
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/// <returns>The formatted MAC address.</returns>
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public static string GetFormattedMacAddress(string macAddress)
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{
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return (macAddress.Length != 12)
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? "00:00:00:00:00:00"
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: Regex.Replace(macAddress, "(.{2})(.{2})(.{2})(.{2})(.{2})(.{2})", "$1:$2:$3:$4:$5:$6");
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}
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/// <summary>
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/// Safely removes the last N chars from a string.
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/// </summary>
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/// <param name="input">The input string.</param>
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/// <param name="amount">The amount of last chars to remove (=N).</param>
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/// <returns>The input string with N removed chars.</returns>
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public static string RemoveLastChars(string input, int amount = 2)
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{
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if (input.Length > amount)
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input = input.Remove(input.Length - amount);
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return input;
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}
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}
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}
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