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country.c (3194B)
1 /* 2 * Extended ban to ban/exempt by country/geoip info (+b ~country:UK) 3 * (C) Copyright 2021 The UnrealIRCd Team 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; either version 1, or (at your option) 8 * any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 18 */ 19 #include "unrealircd.h" 20 21 ModuleHeader MOD_HEADER 22 = { 23 "extbans/country", 24 "6.0", 25 "ExtBan ~country - Ban/exempt by country (geoip)", 26 "UnrealIRCd Team", 27 "unrealircd-6", 28 }; 29 30 /* Forward declarations */ 31 int extban_country_is_ok(BanContext *b); 32 const char *extban_country_conv_param(BanContext *b, Extban *extban); 33 int extban_country_is_banned(BanContext *b); 34 35 Extban *register_country_extban(ModuleInfo *modinfo) 36 { 37 ExtbanInfo req; 38 39 memset(&req, 0, sizeof(req)); 40 req.letter = 'C'; 41 req.name = "country"; 42 req.is_ok = extban_country_is_ok; 43 req.conv_param = extban_country_conv_param; 44 req.is_banned = extban_country_is_banned; 45 req.is_banned_events = BANCHK_ALL|BANCHK_TKL; 46 req.options = EXTBOPT_INVEX|EXTBOPT_TKL; 47 return ExtbanAdd(modinfo->handle, req); 48 } 49 50 /* Called upon module test */ 51 MOD_TEST() 52 { 53 if (!register_country_extban(modinfo)) 54 { 55 config_error("could not register extended ban type"); 56 return MOD_FAILED; 57 } 58 59 return MOD_SUCCESS; 60 } 61 62 /* Called upon module init */ 63 MOD_INIT() 64 { 65 if (!register_country_extban(modinfo)) 66 { 67 config_error("could not register extended ban type"); 68 return MOD_FAILED; 69 } 70 71 MARK_AS_OFFICIAL_MODULE(modinfo); 72 73 return MOD_SUCCESS; 74 } 75 76 /* Called upon module load */ 77 MOD_LOAD() 78 { 79 return MOD_SUCCESS; 80 } 81 82 /* Called upon unload */ 83 MOD_UNLOAD() 84 { 85 return MOD_SUCCESS; 86 } 87 88 int extban_country_usage(Client *client) 89 { 90 sendnotice(client, "ERROR: ExtBan ~country expects a two letter country code, or * to ban unknown countries. " 91 "For example: +b ~country:UK"); 92 return EX_DENY; 93 } 94 95 int extban_country_is_ok(BanContext *b) 96 { 97 if (b->is_ok_check == EXCHK_PARAM) 98 { 99 const char *p; 100 101 if (!strcmp(b->banstr, "*")) 102 return EX_ALLOW; 103 104 if ((strlen(b->banstr) != 2)) 105 return extban_country_usage(b->client); 106 107 for (p = b->banstr; *p; p++) 108 if (!isalpha(*p)) 109 return extban_country_usage(b->client); 110 111 return EX_ALLOW; 112 } 113 return EX_ALLOW; 114 } 115 116 /* Obtain targeted country from the ban string */ 117 const char *extban_country_conv_param(BanContext *b, Extban *extban) 118 { 119 static char retbuf[EVP_MAX_MD_SIZE * 2 + 1]; 120 char *p; 121 122 strlcpy(retbuf, b->banstr, sizeof(retbuf)); 123 124 for (p = retbuf; *p; p++) 125 *p = toupper(*p); 126 127 return retbuf; 128 } 129 130 int extban_country_is_banned(BanContext *b) 131 { 132 GeoIPResult *geo = geoip_client(b->client); 133 char *country; 134 135 country = geo ? geo->country_code : "*"; 136 137 if (!strcmp(b->banstr, country)) 138 return 1; 139 140 return 0; 141 }