133 lines
4.2 KiB
C#
133 lines
4.2 KiB
C#
using System.Globalization;
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using System.Text.RegularExpressions;
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namespace IRaCIS.Core.Application.Helper;
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public static class IRCEmailPasswordHelper
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{
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private static readonly Random Random = new Random();
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//显示位数：3分之2的位数，向上取整
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//取哪几个个值：最后一位和前面几位
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//其他：3个***。
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//比如：hlj23@126.com
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//为：hlj***3@126.com
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//he@126.com
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//为：h*** e@126.com
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public static string MaskEmail(string email)
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{
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// 找到 "@" 符号的位置
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int atIndex = email.IndexOf('@');
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string visiblePartBefore = email.Substring(0, atIndex);
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string afterAt = email.Substring(atIndex + 1);
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int visibleLength = (int)Math.Ceiling((double)visiblePartBefore.Length * 2 / 3);
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// 替换中间两位字符为星号
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string hiddenPartBeforeAt = visiblePartBefore.Substring(0, visibleLength - 1) + "***" + visiblePartBefore.Last();
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// 组合隐藏和可见部分
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string hiddenEmail = hiddenPartBeforeAt + "@" + afterAt;
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return hiddenEmail;
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}
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/// <summary>
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/// 密码必须包含：1）8 – 32 个字符；2）至少1个数字；3) 至少1个大写字母；4）至少1个小写字母；5）至少1个特殊字符 (~!-@#$%^&*_+?)
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/// </summary>
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/// <returns></returns>
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public static string GenerateRandomPassword(int length)
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{
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// 必须包含的字符组
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const string numbers = "0123456789";
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const string upperCaseLetters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
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const string lowerCaseLetters = "abcdefghijklmnopqrstuvwxyz";
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const string specialCharacters = "~!-@#$%^&*_+?";
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// 随机选择至少一个字符
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char[] requiredCharacters =
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{
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numbers[Random.Next(numbers.Length)],
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upperCaseLetters[Random.Next(upperCaseLetters.Length)],
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lowerCaseLetters[Random.Next(lowerCaseLetters.Length)],
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specialCharacters[Random.Next(specialCharacters.Length)]
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};
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// 构建剩余的字符集，用于填充密码的其余部分
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string allCharacters = numbers + upperCaseLetters + lowerCaseLetters + specialCharacters;
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// 确保密码长度满足用户要求
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char[] password = new char[length];
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// 将必须包含的字符放入密码中
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requiredCharacters.CopyTo(password, 0);
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// 填充剩余的字符
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for (int i = requiredCharacters.Length; i < length; i++)
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{
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password[i] = allCharacters[Random.Next(allCharacters.Length)];
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}
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// 随机打乱密码字符顺序
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return new string(password.OrderBy(_ => Random.Next()).ToArray());
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}
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// https://learn.microsoft.com/zh-cn/dotnet/standard/base-types/how-to-verify-that-strings-are-in-valid-email-format
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/// <summary>
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/// 微软官方邮件验证 很宽松
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/// </summary>
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/// <param name="email"></param>
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/// <returns></returns>
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public static bool IsValidEmail(string email)
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{
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if (string.IsNullOrWhiteSpace(email))
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return false;
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try
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{
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// Normalize the domain
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email = Regex.Replace(email, @"(@)(.+)$", DomainMapper,
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RegexOptions.None, TimeSpan.FromMilliseconds(200));
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// Examines the domain part of the email and normalizes it.
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string DomainMapper(Match match)
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{
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// Use IdnMapping class to convert Unicode domain names.
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var idn = new IdnMapping();
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// Pull out and process domain name (throws ArgumentException on invalid)
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string domainName = idn.GetAscii(match.Groups[2].Value);
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return match.Groups[1].Value + domainName;
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}
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}
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catch (RegexMatchTimeoutException e)
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{
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return false;
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}
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catch (ArgumentException e)
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{
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return false;
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}
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try
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{
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return Regex.IsMatch(email,
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@"^[^@\s]+@[^@\s]+\.[^@\s]+$",
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RegexOptions.IgnoreCase, TimeSpan.FromMilliseconds(250));
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}
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catch (RegexMatchTimeoutException)
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{
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return false;
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}
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}
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}
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