Jan2021-Cpp2Il-Dump/Assembly-CSharp/BestHTTP/SecureProtocol/Org/BouncyCastle/Utilities/Net/IPAddress.cs

using System;
using System.Runtime.InteropServices;
using Cpp2IlInjected;

namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities.Net
{
	// Token: 0x0200135B RID: 4955
	[Token(Token = "0x200135B")]
	[StructLayout(3)]
	public class IPAddress
	{
		// Token: 0x06007D59 RID: 32089 RVA: 0x001A55E4 File Offset: 0x001A37E4
		[Token(Token = "0x6007D59")]
		[Address(RVA = "0x202BFA0", Offset = "0x202A9A0", VA = "0x18202BFA0")]
		public static bool IsValid(string address)
		{
			return IPAddress.IsValidIPv4(address) || IPAddress.IsValidIPv6(address);
		}

		// Token: 0x06007D5A RID: 32090 RVA: 0x001A5604 File Offset: 0x001A3804
		[Token(Token = "0x6007D5A")]
		[Address(RVA = "0x202BE80", Offset = "0x202A880", VA = "0x18202BE80")]
		public static bool IsValidWithNetMask(string address)
		{
			int num2;
			int num = num2 + 1;
			string text = address.Substring(num);
			if (num2 > 0)
			{
				int num3 = 0;
				if (IPAddress.IsValidIPv4(address.Substring(num3, num2)) && (IPAddress.IsValidIPv4(text) || IPAddress.IsMaskValue(text, 32)))
				{
					return true;
				}
			}
			int num4;
			num2 = num4;
			int num5 = num4 + 1;
			string text2 = address.Substring(num5);
			if (num2 > 0)
			{
				int num6 = 0;
				if (!IPAddress.IsValidIPv6(address.Substring(num6, num2)))
				{
				}
			}
			IL_66:
			bool flag;
			while (flag)
			{
			}
			bool flag2;
			return flag2;
			goto IL_66;
		}

		// Token: 0x06007D5B RID: 32091 RVA: 0x001A5684 File Offset: 0x001A3884
		[Token(Token = "0x6007D5B")]
		[Address(RVA = "0x202BC40", Offset = "0x202A640", VA = "0x18202BC40")]
		public static bool IsValidIPv4(string address)
		{
			if (address.m_stringLength != 0)
			{
				int num = 0;
				string text = address + ".";
				if (num < text.m_stringLength)
				{
					uint num3;
					int num2 = text.IndexOf((char)num3, num);
					if (num2 > num && num != 4)
					{
						num2 -= num;
						if (int.Parse(text.Substring(num, num2)) <= 255)
						{
							num++;
						}
					}
				}
			}
			throw new NullReferenceException();
		}

		// Token: 0x06007D5C RID: 32092 RVA: 0x001A56EC File Offset: 0x001A38EC
		[Token(Token = "0x6007D5C")]
		[Address(RVA = "0x202BFD0", Offset = "0x202A9D0", VA = "0x18202BFD0")]
		private static bool unsafeIsValidIPv4(string address)
		{
			if (address.m_stringLength != 0)
			{
				int num = 0;
				string text = address + ".";
				if (num < text.m_stringLength)
				{
					uint num3;
					int num2 = text.IndexOf((char)num3, num);
					if (num2 > num)
					{
						if (num == 4)
						{
							goto IL_52;
						}
						num2 -= num;
						if (int.Parse(text.Substring(num, num2)) > 255)
						{
							goto IL_52;
						}
						num++;
					}
				}
				return num == 4;
			}
			IL_52:
			throw new NullReferenceException();
		}

		// Token: 0x06007D5D RID: 32093 RVA: 0x001A5750 File Offset: 0x001A3950
		[Token(Token = "0x6007D5D")]
		[Address(RVA = "0x202BB80", Offset = "0x202A580", VA = "0x18202BB80")]
		public static bool IsValidIPv4WithNetmask(string address)
		{
			int num2;
			int num = num2 + 1;
			string text = address.Substring(num);
			if (num2 > 0)
			{
				int num3 = 0;
				if (IPAddress.IsValidIPv4(address.Substring(num3, num2)))
				{
					return IPAddress.IsValidIPv4(text) || IPAddress.IsMaskValue(text, 32);
				}
			}
			throw new NullReferenceException();
		}

		// Token: 0x06007D5E RID: 32094 RVA: 0x001A579C File Offset: 0x001A399C
		[Token(Token = "0x6007D5E")]
		[Address(RVA = "0x202BD60", Offset = "0x202A760", VA = "0x18202BD60")]
		public static bool IsValidIPv6WithNetmask(string address)
		{
			int num2;
			int num = num2 + 1;
			string text = address.Substring(num);
			if (num2 > 0)
			{
				int num3 = 0;
				if (!IPAddress.IsValidIPv6(address.Substring(num3, num2)))
				{
				}
			}
			bool flag;
			bool flag2;
			return flag || flag2;
		}

		// Token: 0x06007D5F RID: 32095 RVA: 0x001A57E0 File Offset: 0x001A39E0
		[Token(Token = "0x6007D5F")]
		[Address(RVA = "0x202BB00", Offset = "0x202A500", VA = "0x18202BB00")]
		private static bool IsMaskValue(string component, int size)
		{
			return int.Parse(component) <= size;
		}

		// Token: 0x06007D60 RID: 32096 RVA: 0x001A57FC File Offset: 0x001A39FC
		[Token(Token = "0x6007D60")]
		[Address(RVA = "0x202BE20", Offset = "0x202A820", VA = "0x18202BE20")]
		public static bool IsValidIPv6(string address)
		{
			return IPAddress.unsafeIsValidIPv6(address);
		}

		// Token: 0x06007D61 RID: 32097 RVA: 0x001A5814 File Offset: 0x001A3A14
		[Token(Token = "0x6007D61")]
		[Address(RVA = "0x202C0B0", Offset = "0x202AAB0", VA = "0x18202C0B0")]
		private static bool unsafeIsValidIPv6(string address)
		{
			if (address.m_stringLength != 0)
			{
				int num = 0;
				string text = address + ":";
				int num2 = 0;
				if (num < text.m_stringLength)
				{
					uint num4;
					int num3 = text.IndexOf((char)num4, num);
					if (num == 8)
					{
						goto IL_C2;
					}
					int num5;
					if (num == num3)
					{
						if (num3 != 1)
						{
							int stringLength = text.m_stringLength;
						}
						if (num != num2)
						{
							goto IL_C2;
						}
						num5 = num3 + 1;
						num = num5;
						num++;
					}
					num3 -= num5;
					string text2 = text.Substring(num5, num3);
					int stringLength2 = text.m_stringLength;
					uint num6;
					int num7;
					if (num3 == stringLength2 && text2.IndexOf((char)num6) > 0)
					{
						if (!IPAddress.IsValidIPv4(text2))
						{
							goto IL_C2;
						}
						num++;
						num7 = num3 + 1;
						num++;
					}
					string text3 = text.Substring(num7, num3);
					int num8;
					if (num8 > 65535)
					{
						goto IL_C2;
					}
					num++;
				}
				return num != 8;
			}
			IL_C2:
			throw new NullReferenceException();
		}

		// Token: 0x06007D62 RID: 32098 RVA: 0x001A58E8 File Offset: 0x001A3AE8
		[Token(Token = "0x6007D62")]
		[Address(RVA = "0x3C1670", Offset = "0x3C0070", VA = "0x1803C1670")]
		public IPAddress()
		{
		}
	}
}