mirror of
https://github.com/SoftEtherVPN/SoftEtherVPN.git
synced 2024-11-14 21:50:40 +03:00
604 lines
9.4 KiB
C#
604 lines
9.4 KiB
C#
using System;
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using System.Text;
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using System.Collections;
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using System.Security.Cryptography;
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using System.Web;
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using System.IO;
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using System.Drawing;
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public class Util
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{
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public static string TruncStr(string str, int len)
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{
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if (str.Length <= len)
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{
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return str;
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}
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else
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{
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return str.Substring(len);
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}
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}
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public static string GenRand()
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{
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return ByteToStr(Hash(Guid.NewGuid().ToByteArray()));
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}
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public static bool StrCmpi(string s1, string s2)
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{
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try
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{
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if (s1.ToUpper() == s2.ToUpper())
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{
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return true;
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}
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return false;
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}
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catch
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{
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return false;
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}
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}
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public static bool StrCmp(string s1, string s2)
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{
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try
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{
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if (s1 == s2)
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{
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return true;
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}
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return false;
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}
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catch
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{
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return false;
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}
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}
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public static Encoding UTF8()
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{
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return Encoding.UTF8;
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}
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public static Encoding EucJP()
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{
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return Encoding.GetEncoding("euc-jp");
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}
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public static Encoding ShiftJIS()
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{
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return Encoding.GetEncoding("shift_jis");
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}
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public static byte[] Hash(string str)
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{
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return Hash(Encoding.UTF8.GetBytes(str));
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}
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public static byte[] Hash(byte[] data)
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{
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SHA1 sha1 = SHA1.Create();
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return sha1.ComputeHash(data);
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}
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public static string ByteToStr(byte[] data)
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{
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StringBuilder sb = new StringBuilder();
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foreach (byte b in data)
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{
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sb.Append(b.ToString("X2"));
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}
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return sb.ToString();
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}
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public static string RandToStr6(string rand)
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{
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byte[] hash = Hash(rand + "packetix.net");
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return ByteToStr(hash).Substring(0, 6);
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}
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public static bool CheckImageRand(string rand, string str)
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{
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string s = RandToStr6(rand);
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string tmp = str.ToUpper();
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tmp = tmp.Replace("O", "0").Replace("I", "1");
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return StrCmpi(s, tmp);
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}
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public static bool IsAscii(char c)
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{
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if (c >= '0' && c <= '9')
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{
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return true;
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}
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if (c >= 'A' && c <= 'Z')
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{
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return true;
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}
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if (c >= 'a' && c <= 'z')
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{
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return true;
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}
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if (c == '!' || c == '\"' || c == '#' || c == '$' || c == '%' || c == '&' || c == '\'' ||
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c == '(' || c == ')' || c == '-' || c == ' ' || c == '=' || c == '~' || c == '^' || c == '_' ||
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c == '\\' || c == '|' || c == '{' || c == '}' || c == '[' || c == ']' || c == '@' ||
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c == '*' || c == '+' || c == '.' || c == '<' || c == '>' ||
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c == ',' || c == '?' || c == '/')
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{
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return true;
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}
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return false;
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}
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public static bool IsAscii(string str)
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{
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foreach (char c in str)
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{
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if (IsAscii(c) == false)
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{
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return false;
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}
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}
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return true;
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}
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public static bool CheckMailAddress(string str)
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{
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str = str.Trim();
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if (str.Length == 0)
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{
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return false;
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}
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string[] tokens = str.Split('@');
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if (tokens.Length != 2)
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{
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return false;
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}
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string a = tokens[0];
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string b = tokens[1];
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if (a.Length == 0 || b.Length == 0)
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{
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return false;
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}
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if (b.IndexOf(".") == -1)
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{
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return false;
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}
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return IsAscii(str);
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}
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public static string GetFileSizeStr(int size)
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{
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if (size >= 1024 * 1024)
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{
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return ((double)(size) / 1024.0f / 1024.0f).ToString(".##") + " MB";
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}
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if (size >= 1024)
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{
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return ((double)(size) / 1024.0f).ToString(".##") + " KB";
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}
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return ((double)(size)).ToString() + " Bytes";
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}
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public static string IntToStr(int i)
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{
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return i.ToString();
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}
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public static string IntToStr(uint i)
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{
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return i.ToString();
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}
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public static string LongToStr(long i)
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{
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return i.ToString();
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}
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public static string LongToStr(ulong i)
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{
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return i.ToString();
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}
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public static int StrToInt(string str)
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{
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try
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{
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return int.Parse(str);
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}
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catch
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{
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try
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{
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return (int)double.Parse(str);
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}
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catch
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{
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return 0;
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}
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}
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}
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public static uint StrToUInt(string str)
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{
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try
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{
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return uint.Parse(str);
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}
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catch
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{
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return 0;
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}
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}
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public static long StrToLong(string str)
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{
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try
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{
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return long.Parse(str);
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}
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catch
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{
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return 0;
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}
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}
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public static ulong StrToULong(string str)
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{
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try
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{
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return ulong.Parse(str);
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}
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catch
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{
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return 0;
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}
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}
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public static DateTime StrToDate(string str)
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{
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DateTime ret = new DateTime(0);
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str = str.Trim();
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if (str.Length == 8)
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{
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int year = StrToInt(str.Substring(0, 4));
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int month = StrToInt(str.Substring(4, 2));
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int day = StrToInt(str.Substring(6, 2));
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ret = new DateTime(year, month, day);
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}
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return ret;
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}
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public static string SafeSql(string str)
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{
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return str.Replace("'", "");
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}
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public static bool IsFileExists(string name)
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{
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try
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{
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return File.Exists(name);
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}
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catch
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{
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return false;
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}
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}
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public static string GetDefaultDocumentIfExists(string dir)
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{
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string[] targets =
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{
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"default.aspx",
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"default.asp",
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"default.html",
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"default.htm",
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"index.html",
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"index.htm",
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};
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foreach (string s in targets)
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{
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string name = dir + s;
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if (IsFileExists(name))
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{
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return name;
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}
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}
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return null;
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}
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public static string ReadHtmlFile(string filename)
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{
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return File.ReadAllText(filename, Encoding.GetEncoding("shift_jis"));
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}
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public static string GetAlternativeTitleFromHtml(string src)
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{
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string tmp;
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string upper;
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int i;
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upper = src.ToLower();
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i = upper.IndexOf("</at>");
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if (i == -1)
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{
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return null;
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}
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tmp = src.Substring(0, i);
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i = tmp.IndexOf("<at>");
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if (i == -1)
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{
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return null;
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}
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string ret = tmp.Substring(i + 4);
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if (ret.Length == 0)
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{
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return null;
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}
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else
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{
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return ret;
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}
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}
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public static string GetTitleFromHtml(string src)
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{
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string tmp;
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string upper;
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int i;
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upper = src.ToLower();
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i = upper.IndexOf("</title>");
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if (i == -1)
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{
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return null;
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}
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tmp = src.Substring(0, i);
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i = tmp.IndexOf("<title>");
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if (i == -1)
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{
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return null;
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}
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return tmp.Substring(i + 7);
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}
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public static string GetTitleFromHtmlFile(string filename)
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{
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return GetTitleFromHtml(ReadHtmlFile(filename));
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}
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public static string GetAlternativeTitleFromHtmlFile(string filename)
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{
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return GetAlternativeTitleFromHtml(ReadHtmlFile(filename));
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}
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public static string GetUrlFileNameFromPath(string url)
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{
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string folder = GetUrlDirNameFromPath(url);
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return url.Substring(folder.Length);
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}
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public static string GetUrlDirNameFromPath(string url)
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{
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string ret = "";
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string[] strs = url.Split('/');
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int i;
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if (strs.Length >= 1)
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{
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for (i = 0; i < strs.Length - 1; i++)
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{
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ret += strs[i] + "/";
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}
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}
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return ret;
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}
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public static string Encode64(string str)
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{
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return Convert.ToBase64String(Encoding.UTF8.GetBytes(str)).Replace("/", "(").Replace("+", ")");
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}
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public static string Decode64(string str)
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{
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return Encoding.UTF8.GetString(Convert.FromBase64String(str.Replace(")", "+").Replace("(", "/")));
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}
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public static string RemoveDefaultHtml(string url)
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{
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string tmp = url.ToLower();
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if (tmp.EndsWith("/default.asp") || tmp.EndsWith("/default.aspx") || tmp.EndsWith("/default.htm") || tmp.EndsWith("/default.html"))
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{
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return GetUrlDirNameFromPath(url);
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}
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else
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{
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return url;
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}
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}
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public static string RemovePortFromHostHeader(string str)
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{
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try
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{
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string[] ret = str.Split(':');
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return ret[0];
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}
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catch
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{
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return str;
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}
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}
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public static string ToStr3(ulong v)
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{
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string tmp = LongToStr(v);
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int len, i;
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string tmp2 = "";
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len = tmp.Length;
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for (i = len - 1; i >= 0; i--)
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{
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tmp2 += tmp[i];
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}
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tmp = "";
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for (i = 0; i < len; i++)
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{
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if (i != 0 && (i % 3) == 0)
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{
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tmp += ",";
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}
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tmp += tmp2[i];
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}
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tmp2 = "";
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len = tmp.Length;
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for (i = len - 1; i >= 0; i--)
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{
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tmp2 += tmp[i];
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}
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return tmp2;
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}
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public static string DateTimeToStr(DateTime dt)
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{
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return DateTimeToStr(dt, false);
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}
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public static string DateTimeToStr(DateTime dt, bool toLocalTime)
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{
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if (toLocalTime)
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{
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dt = dt.ToLocalTime();
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}
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return dt.ToString("yyyy年M月d日(ddd) H時m分s秒");
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}
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public static byte[] IntToByte(uint value)
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{
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MemoryStream st = new MemoryStream();
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BinaryWriter w = new BinaryWriter(st);
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w.Write(value);
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st.Seek(0, SeekOrigin.Begin);
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return st.ToArray();
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}
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public static uint ByteToInt(byte[] b)
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{
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MemoryStream st = new MemoryStream();
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st.Write(b, 0, b.Length);
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st.Seek(0, SeekOrigin.Begin);
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BinaryReader r = new BinaryReader(st);
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return r.ReadUInt32();
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}
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public static byte[] ReverseByteArray(byte[] b)
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{
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int i, num, j;
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num = b.Length;
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byte[] ret = new byte[num];
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j = 0;
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for (i = num - 1; i >= 0; i--)
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{
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ret[j++] = b[i];
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}
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return ret;
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}
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public static uint ReverseEndian(uint value)
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{
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return ByteToInt(ReverseByteArray(IntToByte(value)));
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}
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public static string SafeDomainStr(string str)
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{
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string ret = str.Replace("(", "").Replace(")", "").Replace(" ", "").Replace("-", "").Replace("#", "")
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.Replace("%", "").Replace("%", "").Replace("&", "").Replace(".", "");
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if (ret == "")
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{
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ret = "host";
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}
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return ret;
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}
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public static bool CompareByte(byte[] b1, byte[] b2)
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{
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if (b1.Length != b2.Length)
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{
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return false;
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}
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int i, len;
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len = b1.Length;
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for (i = 0; i < len; i++)
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{
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if (b1[i] != b2[i])
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{
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return false;
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}
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}
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return true;
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}
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public static int CompareByteRetInt(byte[] b1, byte[] b2)
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{
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int i;
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for (i = 0; ; i++)
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{
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int a1 = -1, a2 = -1;
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if (b1.Length < i)
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{
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a1 = (int)b1[i];
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}
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if (b2.Length < i)
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{
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a2 = (int)b2[i];
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}
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if (a1 > a2)
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{
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return 1;
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}
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else if (a1 < a2)
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{
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return -1;
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}
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if (a1 == -1 && a2 == -1)
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{
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return 0;
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}
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}
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}
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public static byte[] CloneByteArray(byte[] src)
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{
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return (byte[])src.Clone();
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}
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}
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