569b350cea
If there's one thing I learned in this exercise, it's that letting people add random python scripts to the repo like gpltext.py that promise to be easier than find and replace is a bad idea.
333 lines
No EOL
17 KiB
C#
333 lines
No EOL
17 KiB
C#
/*
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TShock, a server mod for Terraria
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Copyright (C) 2011-2018 Pryaxis & TShock Contributors
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/* GeoIPCountry.cs
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*
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* Copyright (C) 2008 MaxMind, Inc. All Rights Reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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using System;
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using System.IO;
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using System.Net;
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using System.Net.Sockets;
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// This code is based on MaxMind's original C# code, which was ported from Java.
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// This version is very simplified and does not support a majority of features for speed.
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namespace MaxMind
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{
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/// <summary>
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/// Allows for looking up a country based on an IP address. See www.maxmind.com for more details.
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/// </summary>
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/// <example>
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/// static void Main(string[] args)
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/// {
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/// using(GeoIPCountry geo = new GeoIPCountry("GeoIP.dat"))
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/// {
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/// try
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/// {
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/// Console.WriteLine("Country code of IP address 67.15.94.80: " + geo.GetCountryCode("67.15.94.80"));
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/// }
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/// catch(Exception ex)
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/// {
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/// Console.WriteLine(ex.ToString());
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/// }
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/// }
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/// }
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/// </example>
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public sealed class GeoIPCountry : IDisposable
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{
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private Stream _geodata;
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private bool _close;
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// hard coded position of where country data starts in the data file.
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private const long COUNTRY_BEGIN = 16776960;
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private static readonly string[] CountryCodes = {
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"--", "AP", "EU", "AD", "AE", "AF", "AG", "AI", "AL", "AM", "AN",
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"AO", "AQ", "AR", "AS",
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"AT", "AU", "AW", "AZ", "BA", "BB", "BD", "BE", "BF", "BG", "BH",
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"BI", "BJ", "BM", "BN",
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"BO", "BR", "BS", "BT", "BV", "BW", "BY", "BZ", "CA", "CC", "CD",
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"CF", "CG", "CH", "CI",
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"CK", "CL", "CM", "CN", "CO", "CR", "CU", "CV", "CX", "CY", "CZ",
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"DE", "DJ", "DK", "DM",
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"DO", "DZ", "EC", "EE", "EG", "EH", "ER", "ES", "ET", "FI", "FJ",
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"FK", "FM", "FO", "FR",
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"FX", "GA", "GB", "GD", "GE", "GF", "GH", "GI", "GL", "GM", "GN",
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"GP", "GQ", "GR", "GS",
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"GT", "GU", "GW", "GY", "HK", "HM", "HN", "HR", "HT", "HU", "ID",
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"IE", "IL", "IN", "IO",
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"IQ", "IR", "IS", "IT", "JM", "JO", "JP", "KE", "KG", "KH", "KI",
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"KM", "KN", "KP", "KR",
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"KW", "KY", "KZ", "LA", "LB", "LC", "LI", "LK", "LR", "LS", "LT",
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"LU", "LV", "LY", "MA",
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"MC", "MD", "MG", "MH", "MK", "ML", "MM", "MN", "MO", "MP", "MQ",
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"MR", "MS", "MT", "MU",
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"MV", "MW", "MX", "MY", "MZ", "NA", "NC", "NE", "NF", "NG", "NI",
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"NL", "NO", "NP", "NR",
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"NU", "NZ", "OM", "PA", "PE", "PF", "PG", "PH", "PK", "PL", "PM",
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"PN", "PR", "PS", "PT",
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"PW", "PY", "QA", "RE", "RO", "RU", "RW", "SA", "SB", "SC", "SD",
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"SE", "SG", "SH", "SI",
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"SJ", "SK", "SL", "SM", "SN", "SO", "SR", "ST", "SV", "SY", "SZ",
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"TC", "TD", "TF", "TG",
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"TH", "TJ", "TK", "TM", "TN", "TO", "TL", "TR", "TT", "TV", "TW",
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"TZ", "UA", "UG", "UM",
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"US", "UY", "UZ", "VA", "VC", "VE", "VG", "VI", "VN", "VU", "WF",
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"WS", "YE", "YT", "RS",
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"ZA", "ZM", "ME", "ZW", "A1", "A2", "O1", "AX", "GG", "IM", "JE",
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"BL", "MF"
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};
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private static readonly string[] CountryNames = {
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"N/A", "Asia/Pacific Region", "Europe", "Andorra",
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"United Arab Emirates", "Afghanistan",
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"Antigua and Barbuda", "Anguilla", "Albania", "Armenia",
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"Netherlands Antilles", "Angola",
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"Antarctica", "Argentina", "American Samoa", "Austria", "Australia",
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"Aruba", "Azerbaijan",
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"Bosnia and Herzegovina", "Barbados", "Bangladesh", "Belgium",
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"Burkina Faso", "Bulgaria",
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"Bahrain", "Burundi", "Benin", "Bermuda", "Brunei Darussalam",
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"Bolivia", "Brazil", "Bahamas",
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"Bhutan", "Bouvet Island", "Botswana", "Belarus", "Belize", "Canada",
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"Cocos (Keeling) Islands",
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"Congo, The Democratic Republic of the", "Central African Republic",
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"Congo", "Switzerland",
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"Cote D'Ivoire", "Cook Islands", "Chile", "Cameroon", "China",
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"Colombia", "Costa Rica", "Cuba",
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"Cape Verde", "Christmas Island", "Cyprus", "Czech Republic",
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"Germany", "Djibouti", "Denmark",
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"Dominica", "Dominican Republic", "Algeria", "Ecuador", "Estonia",
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"Egypt", "Western Sahara",
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"Eritrea", "Spain", "Ethiopia", "Finland", "Fiji",
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"Falkland Islands (Malvinas)",
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"Micronesia, Federated States of", "Faroe Islands", "France",
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"France, Metropolitan", "Gabon",
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"United Kingdom", "Grenada", "Georgia", "French Guiana", "Ghana",
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"Gibraltar", "Greenland",
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"Gambia", "Guinea", "Guadeloupe", "Equatorial Guinea", "Greece",
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"South Georgia and the South Sandwich Islands", "Guatemala", "Guam",
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"Guinea-Bissau", "Guyana",
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"Hong Kong", "Heard Island and McDonald Islands", "Honduras",
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"Croatia", "Haiti", "Hungary",
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"Indonesia", "Ireland", "Israel", "India",
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"British Indian Ocean Territory", "Iraq",
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"Iran, Islamic Republic of", "Iceland", "Italy", "Jamaica", "Jordan",
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"Japan", "Kenya",
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"Kyrgyzstan", "Cambodia", "Kiribati", "Comoros",
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"Saint Kitts and Nevis",
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"Korea, Democratic People's Republic of", "Korea, Republic of",
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"Kuwait", "Cayman Islands",
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"Kazakstan", "Lao People's Democratic Republic", "Lebanon",
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"Saint Lucia", "Liechtenstein",
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"Sri Lanka", "Liberia", "Lesotho", "Lithuania", "Luxembourg",
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"Latvia", "Libyan Arab Jamahiriya",
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"Morocco", "Monaco", "Moldova, Republic of", "Madagascar",
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"Marshall Islands", "Macedonia",
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"Mali", "Myanmar", "Mongolia", "Macau", "Northern Mariana Islands",
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"Martinique", "Mauritania",
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"Montserrat", "Malta", "Mauritius", "Maldives", "Malawi", "Mexico",
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"Malaysia", "Mozambique",
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"Namibia", "New Caledonia", "Niger", "Norfolk Island", "Nigeria",
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"Nicaragua", "Netherlands",
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"Norway", "Nepal", "Nauru", "Niue", "New Zealand", "Oman", "Panama",
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"Peru", "French Polynesia",
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"Papua New Guinea", "Philippines", "Pakistan", "Poland",
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"Saint Pierre and Miquelon",
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"Pitcairn Islands", "Puerto Rico", "Palestinian Territory",
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"Portugal", "Palau", "Paraguay",
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"Qatar", "Reunion", "Romania", "Russian Federation", "Rwanda",
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"Saudi Arabia",
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"Solomon Islands", "Seychelles", "Sudan", "Sweden", "Singapore",
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"Saint Helena", "Slovenia",
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"Svalbard and Jan Mayen", "Slovakia", "Sierra Leone", "San Marino",
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"Senegal", "Somalia",
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"Suriname", "Sao Tome and Principe", "El Salvador",
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"Syrian Arab Republic", "Swaziland",
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"Turks and Caicos Islands", "Chad", "French Southern Territories",
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"Togo", "Thailand",
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"Tajikistan", "Tokelau", "Turkmenistan", "Tunisia", "Tonga",
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"Timor-Leste", "Turkey",
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"Trinidad and Tobago", "Tuvalu", "Taiwan",
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"Tanzania, United Republic of", "Ukraine", "Uganda",
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"United States Minor Outlying Islands", "United States", "Uruguay",
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"Uzbekistan",
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"Holy See (Vatican City State)", "Saint Vincent and the Grenadines",
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"Venezuela",
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"Virgin Islands, British", "Virgin Islands, U.S.", "Vietnam",
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"Vanuatu", "Wallis and Futuna",
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"Samoa", "Yemen", "Mayotte", "Serbia", "South Africa", "Zambia",
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"Montenegro", "Zimbabwe",
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"Anonymous Proxy", "Satellite Provider", "Other", "Aland Islands",
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"Guernsey", "Isle of Man",
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"Jersey", "Saint Barthelemy", "Saint Martin"
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};
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//
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// Constructor
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//
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/// <summary>
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/// Initialises a new instance of this class.
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/// </summary>
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/// <param name="datafile">An already open stream pointing to the contents of a GeoIP.dat file.</param>
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/// <remarks>The stream is not closed when this class is disposed. Be sure to clean up afterwards!</remarks>
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public GeoIPCountry(Stream datafile)
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{
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_geodata = datafile;
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_close = false;
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}
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/// <summary>
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/// Initialises a new instance of this class, using an on-disk database.
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/// </summary>
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/// <param name="filename">Path to database file.</param>
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/// <remarks>The file will be closed when this class is disposed.</remarks>
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public GeoIPCountry(string filename)
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{
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FileStream fs = new FileStream(filename, FileMode.Open);
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_geodata = fs;
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_close = true;
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}
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/// <summary>
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/// Retrieves a two-letter code, defined by MaxMind, which details the country the specified IP address is located.
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/// </summary>
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/// <param name="ip">IP address to query.</param>
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/// <returns>A two-letter code string. Throws exceptions on failure.</returns>
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/// <remarks>The IP address must be IPv4.</remarks>
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public string GetCountryCode(IPAddress ip)
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{
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return CountryCodes[FindIndex(ip)];
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}
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/// <summary>
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/// Retrieves a two-letter code, defined by MaxMind, which details the country the specified IP address is located. Does not throw exceptions on failure.
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/// </summary>
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/// <param name="ip">IP address to query.</param>
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/// <returns>Two-letter country code or null on failure.</returns>
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public string TryGetCountryCode(IPAddress ip)
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{
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try
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{
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return CountryCodes[FindIndex(ip)];
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}
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catch (Exception)
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{
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return null;
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}
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}
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/// <summary>
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/// Gets the English name of a country, by a country code.
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/// </summary>
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/// <param name="countrycode">Country code to look up, returned by GetCountryCode or TryGetCountryCode.</param>
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/// <returns>English name of the country, or null on failure.</returns>
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public static string GetCountryNameByCode(string countrycode)
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{
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int index = Array.IndexOf(CountryCodes, countrycode);
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return index == -1 ? null : CountryNames[index];
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}
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private int FindIndex(IPAddress ip)
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{
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return (int) FindCountryCode(0, AddressToLong(ip), 31);
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}
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// Converts an IPv4 address into a long, for reading from geo database
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private long AddressToLong(IPAddress ip)
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{
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if (ip.AddressFamily != AddressFamily.InterNetwork)
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throw new InvalidOperationException("IP address is not IPv4");
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long num = 0;
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byte[] bytes = ip.GetAddressBytes();
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for (int i = 0; i < 4; ++i)
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{
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long y = bytes[i];
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if (y < 0)
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y += 256;
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num += y << ((3 - i)*8);
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}
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return num;
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}
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// Traverses the GeoIP binary data looking for a country code based
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// on the IP address mask
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private long FindCountryCode(long offset, long ipnum, int depth)
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{
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byte[] buffer = new byte[6]; // 2 * MAX_RECORD_LENGTH
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long[] x = new long[2];
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if (depth < 0)
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throw new IOException("Cannot seek GeoIP database");
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_geodata.Seek(6*offset, SeekOrigin.Begin);
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_geodata.Read(buffer, 0, 6);
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for (int i = 0; i < 2; i++)
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{
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x[i] = 0;
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for (int j = 0; j < 3; j++)
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{
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int y = buffer[i*3 + j];
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if (y < 0)
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y += 256;
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x[i] += (y << (j*8));
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}
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}
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if ((ipnum & (1 << depth)) > 0)
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{
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if (x[1] >= COUNTRY_BEGIN)
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return x[1] - COUNTRY_BEGIN;
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return FindCountryCode(x[1], ipnum, depth - 1);
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}
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else
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{
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if (x[0] >= COUNTRY_BEGIN)
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return x[0] - COUNTRY_BEGIN;
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return FindCountryCode(x[0], ipnum, depth - 1);
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}
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}
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public void Dispose()
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{
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if (_close && _geodata != null)
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{
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_geodata.Close();
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_geodata = null;
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}
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}
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}
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} |