amxmodx/dlls/geoip/geoip_amxx.cpp

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// vim: set ts=4 sw=4 tw=99 noet:
//
// AMX Mod X, based on AMX Mod by Aleksander Naszko ("OLO").
// Copyright (C) The AMX Mod X Development Team.
//
// This software is licensed under the GNU General Public License, version 3 or higher.
// Additional exceptions apply. For full license details, see LICENSE.txt or visit:
// https://alliedmods.net/amxmodx-license
//
// GeoIP Module
//
#include "geoip_amxx.h"
#include <am-string.h>
#include <am-vector.h>
MMDB_s HandleDB;
ke::Vector<ke::AString> LangList;
char *stripPort(char *ip)
{
char *tmp = strchr(ip, ':');
if (tmp)
{
*tmp = '\0';
}
return ip;
}
const char* stristr(const char* str, const char* substr)
{
register char *needle = (char *)substr;
register char *prevloc = (char *)str;
register char *haystack = (char *)str;
while (*haystack)
{
if (tolower(*haystack) == tolower(*needle))
{
haystack++;
if (!*++needle)
{
return prevloc;
}
}
else
{
haystack = ++prevloc;
needle = (char *)substr;
}
}
return NULL;
}
bool lookupByIp(const char *ip, const char **path, MMDB_entry_data_s *result)
{
int gai_error = 0, mmdb_error = 0;
MMDB_lookup_result_s lookup = MMDB_lookup_string(&HandleDB, ip, &gai_error, &mmdb_error);
if (gai_error != 0 || MMDB_SUCCESS != mmdb_error || !lookup.found_entry)
{
return false;
}
MMDB_entry_data_s entry_data;
MMDB_aget_value(&lookup.entry, &entry_data, path);
if (!entry_data.has_data)
{
return false;
}
*result = entry_data;
return true;
}
const char *lookupString(const char *ip, const char **path, int *length = NULL)
{
static char buffer[256]; // This should be large enough for long name in UTF-8.
MMDB_entry_data_s result;
if (!lookupByIp(ip, path, &result))
{
return NULL;
}
// Let's avoid a crash in case we go over the buffer size.
size_t maxLength = ke::Min(result.data_size, sizeof(buffer));
// Strings from database are not null terminated.
memcpy(buffer, result.utf8_string, maxLength);
buffer[result.data_size] = '\0';
if (length)
{
*length = maxLength;
}
return buffer;
}
double lookupDouble(const char *ip, const char **path)
{
MMDB_entry_data_s result;
if (!lookupByIp(ip, path, &result))
{
return NULL;
}
return result.double_value;
}
int getContinentId(const char *code)
{
#define CONTINENT_UNKNOWN 0
#define CONTINENT_AFRICA 1
#define CONTINENT_ASIA 2
#define CONTINENT_EUROPE 3
#define CONTINENT_NORTH_AMERICA 4
#define CONTINENT_OCEANIA 5
#define CONTINENT_SOUTH_AMERICA 6
int index = CONTINENT_UNKNOWN;
if (code)
{
switch (code[0])
{
case 'A':
{
switch (code[1])
{
case 'F': index = CONTINENT_AFRICA; break;
case 'S': index = CONTINENT_ASIA; break;
}
}
case 'E': index = CONTINENT_EUROPE; break;
case 'O': index = CONTINENT_OCEANIA; break;
case 'N': index = CONTINENT_NORTH_AMERICA; break;
case 'S': index = CONTINENT_SOUTH_AMERICA; break;
}
}
return index;
}
const char *getLang(int playerIndex)
{
static cvar_t *amxmodx_language = NULL;
static cvar_t *amxmodx_cl_langs = NULL;
if (!amxmodx_language)
amxmodx_language = CVAR_GET_POINTER("amx_language");
if (!amxmodx_cl_langs)
amxmodx_cl_langs = CVAR_GET_POINTER("amx_client_languages");
if (playerIndex >= 0 && amxmodx_cl_langs && amxmodx_language)
{
const char *value;
const char *lang;
if (playerIndex == 0 || amxmodx_cl_langs->value <= 0 || !MF_IsPlayerIngame(playerIndex))
{
value = amxmodx_language->string;
}
else
{
value = ENTITY_KEYVALUE(MF_GetPlayerEdict(playerIndex), "lang");
}
if (value && *value)
{
for (size_t i = 0; i < LangList.length(); ++i)
{
lang = LangList.at(i).chars();
if (stristr(lang, value) != NULL)
{
return lang;
}
}
}
}
return "en";
}
// native geoip_code2(const ip[], ccode[3]);
// Deprecated.
static cell AMX_NATIVE_CALL amx_geoip_code2(AMX *amx, cell *params)
{
int length;
char *ip = stripPort(MF_GetAmxString(amx, params[1], 0, &length));
const char *path[] = { "country", "iso_code", NULL };
const char *code = lookupString(ip, path);
return MF_SetAmxString(amx, params[2], code ? code : "error", 3);
}
// native geoip_code3(const ip[], result[4]);
// Deprecated.
static cell AMX_NATIVE_CALL amx_geoip_code3(AMX *amx, cell *params)
{
int length;
char *ip = stripPort(MF_GetAmxString(amx, params[1], 0, &length));
const char *path[] = { "country", "iso_code", NULL };
const char *code = lookupString(ip, path);
for (size_t i = 0; i < ARRAYSIZE(GeoIPCountryCode); ++i)
{
if (!strncmp(code, GeoIPCountryCode[i], 2))
{
code = GeoIPCountryCode3[i];
break;
}
}
return MF_SetAmxString(amx, params[2], code ? code : "error", 4);
}
// native bool:geoip_code2_ex(const ip[], result[3]);
static cell AMX_NATIVE_CALL amx_geoip_code2_ex(AMX *amx, cell *params)
{
int length;
char *ip = stripPort(MF_GetAmxString(amx, params[1], 0, &length));
const char *path[] = { "country", "iso_code", NULL };
const char *code = lookupString(ip, path);
if (!code)
{
return 0;
}
MF_SetAmxString(amx, params[2], code, 2);
return 1;
}
// native bool:geoip_code3_ex(const ip[], result[4]);
static cell AMX_NATIVE_CALL amx_geoip_code3_ex(AMX *amx, cell *params)
{
int length;
char *ip = stripPort(MF_GetAmxString(amx, params[1], 0, &length));
const char *path[] = { "country", "iso_code", NULL };
const char *code = lookupString(ip, path, &length);
if (!code)
{
return 0;
}
for (size_t i = 0; i < ARRAYSIZE(GeoIPCountryCode); ++i)
{
if (!strncmp(code, GeoIPCountryCode[i], 2))
{
code = GeoIPCountryCode3[i];
break;
}
}
MF_SetAmxString(amx, params[2], code, 3);
return 1;
}
// native geoip_country(const ip[], result[], len, id = -1);
static cell AMX_NATIVE_CALL amx_geoip_country(AMX *amx, cell *params)
{
int length;
char *ip = stripPort(MF_GetAmxString(amx, params[1], 0, &length));
const char *path[] = { "country", "names", getLang(params[4]), NULL };
const char *country = lookupString(ip, path, &length);
if (!country)
{
return 0;
}
return MF_SetAmxString(amx, params[2], country, length >= params[3] ? params[3] : length); // TODO: make this utf8 safe.
}
// native geoip_city(const ip[], result[], len, id = -1);
static cell AMX_NATIVE_CALL amx_geoip_city(AMX *amx, cell *params)
{
int length;
char *ip = stripPort(MF_GetAmxString(amx, params[1], 0, &length));
const char *path[] = { "city", "names", getLang(params[4]), NULL };
const char *city = lookupString(ip, path, &length);
return MF_SetAmxString(amx, params[2], city ? city : "", length >= params[3] ? params[3] : length); // TODO: make this utf8 safe.
}
// native geoip_region_code(const ip[], result[], len);
static cell AMX_NATIVE_CALL amx_geoip_region_code(AMX *amx, cell *params)
{
int length;
int finalLength = 0;
char code[12]; // This should be largely enough to hold xx-yyyy and more if needed.
char *ip = stripPort(MF_GetAmxString(amx, params[1], 0, &length));
const char *pathCountry[] = { "country", "iso_code", NULL };
const char *countryCode = lookupString(ip, pathCountry, &length);
if (countryCode)
{
finalLength = length + 1; // + 1 for dash.
snprintf(code, finalLength + 1, "%s-", countryCode); // + EOS.
const char *pathRegion[] = { "subdivisions", "0", "iso_code", NULL }; // First result.
const char *regionCode = lookupString(ip, pathRegion, &length);
if (regionCode)
{
finalLength += length;
strncat(code, regionCode, length);
}
else
{
finalLength = 0;
}
}
return MF_SetAmxString(amx, params[2], finalLength ? code : "", finalLength >= params[3] ? params[3] : finalLength);
}
// native geoip_region_name(const ip[], result[], len, id = -1);
static cell AMX_NATIVE_CALL amx_geoip_region_name(AMX *amx, cell *params)
{
int length;
char *ip = stripPort(MF_GetAmxString(amx, params[1], 0, &length));
const char *path[] = { "subdivisions", "0", "names", getLang(params[4]), NULL }; // First result.
const char *region = lookupString(ip, path, &length);
return MF_SetAmxString(amx, params[2], region ? region : "", length >= params[3] ? params[3] : length); // TODO: make this utf8 safe.
}
// native geoip_timezone(const ip[], result[], len);
static cell AMX_NATIVE_CALL amx_geoip_timezone(AMX *amx, cell *params)
{
int length;
char *ip = stripPort(MF_GetAmxString(amx, params[1], 0, &length));
const char *path[] = { "location", "time_zone", NULL };
const char *timezone = lookupString(ip, path, &length);
return MF_SetAmxString(amx, params[2], timezone ? timezone : "", length >= params[3] ? params[3] : length);
}
// native geoip_latitude(const ip[]);
static cell AMX_NATIVE_CALL amx_geoip_latitude(AMX *amx, cell *params)
{
int length;
char *ip = stripPort(MF_GetAmxString(amx, params[1], 0, &length));
const char *path[] = { "location", "latitude", NULL };
double latitude = lookupDouble(ip, path);
return amx_ftoc(latitude);
}
// native geoip_longitude(const ip[]);
static cell AMX_NATIVE_CALL amx_geoip_longitude(AMX *amx, cell *params)
{
int length;
char *ip = stripPort(MF_GetAmxString(amx, params[1], 0, &length));
const char *path[] = { "location", "longitude", NULL };
double longitude = lookupDouble(ip, path);
return amx_ftoc(longitude);
}
// native Float:geoip_distance(Float:lat1, Float:lon1, Float:lat2, Float:lon2, system = SYSTEM_METRIC);
static cell AMX_NATIVE_CALL amx_geoip_distance(AMX *amx, cell *params)
{
float earthRadius = params[5] ? 3958.0 : 6370.997; // miles / km
float lat1 = amx_ctof(params[1]) * (M_PI / 180);
float lon1 = amx_ctof(params[2]) * (M_PI / 180);
float lat2 = amx_ctof(params[3]) * (M_PI / 180);
float lon2 = amx_ctof(params[4]) * (M_PI / 180);
return amx_ftoc(earthRadius * acos(sin(lat1) * sin(lat2) + cos(lat1) * cos(lat2) * cos(lon2 - lon1)));
}
// native Continent:geoip_continent_code(const ip[], result[3] = "");
static cell AMX_NATIVE_CALL amx_geoip_continent_code(AMX *amx, cell *params)
{
int length;
char *ip = stripPort(MF_GetAmxString(amx, params[1], 0, &length));
const char *path[] = { "continent", "code", NULL };
const char *code = lookupString(ip, path, &length);
MF_SetAmxString(amx, params[2], code ? code : "", code ? 2 : 0);
return getContinentId(code);
}
// native geoip_continent_name(const ip[], result[], len, id = -1);
static cell AMX_NATIVE_CALL amx_geoip_continent_name(AMX *amx, cell *params)
{
int length;
char *ip = stripPort(MF_GetAmxString(amx, params[1], 0, &length));
const char *path[] = { "continent", "names", getLang(params[4]), NULL };
const char *continent = lookupString(ip, path, &length);
return MF_SetAmxString(amx, params[2], continent ? continent : "", length >= params[3] ? params[3] : length); // TODO: make this utf8 safe.
}
void OnAmxxAttach()
{
const char *databases[] =
{
"City",
"Country" // is the default shipped database with AMXX.
};
const char *modName = MF_GetModname();
const char *dataDir = MF_GetLocalInfo("amxx_datadir", "addons/amxmodx/data");
char file[255];
int status = -1;
for (size_t i = 0; i < ARRAYSIZE(databases); ++i)
{
sprintf(file, "%s/%s/GeoLite2-%s.mmdb", modName, dataDir, databases[i]); // MF_BuildPathname not used because backslash
// makes CreateFileMapping failing under windows.
status = MMDB_open(file, MMDB_MODE_MMAP, &HandleDB);
if (status == MMDB_SUCCESS)
{
break;
}
else if (status != MMDB_FILE_OPEN_ERROR)
{
MF_Log("Could not open %s - %s", file, MMDB_strerror(status));
if (status == MMDB_IO_ERROR)
{
MF_Log(" IO error: %s", strerror(errno));
}
}
}
if (status != MMDB_SUCCESS)
{
MF_Log("Could not find GeoIP2 databases. Disabled natives.");
return;
}
MF_Log("Database info: %s %i.%i",
HandleDB.metadata.description.descriptions[0]->description,
HandleDB.metadata.binary_format_major_version,
HandleDB.metadata.binary_format_minor_version);
// Retrieve supported languages.
for (size_t i = 0; i < HandleDB.metadata.languages.count; i++)
{
LangList.append(ke::AString(HandleDB.metadata.languages.names[i]));
}
MF_AddNatives(geoip_natives);
}
void OnAmxxDetach()
{
MMDB_close(&HandleDB);
LangList.clear();
}
AMX_NATIVE_INFO geoip_natives[] =
{
{ "geoip_code2", amx_geoip_code2 },
{ "geoip_code3", amx_geoip_code3 },
{ "geoip_code2_ex", amx_geoip_code2_ex },
{ "geoip_code3_ex", amx_geoip_code3_ex },
{ "geoip_country", amx_geoip_country },
{ "geoip_city" , amx_geoip_city },
{ "geoip_region_code", amx_geoip_region_code },
{ "geoip_region_name", amx_geoip_region_name },
{ "geoip_timezone" , amx_geoip_timezone },
{ "geoip_latitude" , amx_geoip_latitude },
{ "geoip_longitude", amx_geoip_longitude },
{ "geoip_distance" , amx_geoip_distance },
{ "geoip_continent_code", amx_geoip_continent_code },
{ "geoip_continent_name", amx_geoip_continent_name },
{ NULL, NULL },
};
/**
* GEOIP2 DATA EXAMPLE:
*
* {
* "city": {
* "confidence": 25,
* "geoname_id": 54321,
* "names": {
* "de": "Los Angeles",
* "en": "Los Angeles",
* "es": "Los Ángeles",
* "fr": "Los Angeles",
* "ja": "ロサンゼルス市",
* "pt-BR": "Los Angeles",
* "ru": "Лос-Анджелес",
* "zh-CN": "洛杉矶"
* }
* },
* "continent": {
* "code": "NA",
* "geoname_id": 123456,
* "names": {
* "de": "Nordamerika",
* "en": "North America",
* "es": "América del Norte",
* "fr": "Amérique du Nord",
* "ja": "北アメリカ",
* "pt-BR": "América do Norte",
* "ru": "Северная Америка",
* "zh-CN": "北美洲"
*
* }
* },
* "country": {
* "confidence": 75,
* "geoname_id": "6252001",
* "iso_code": "US",
* "names": {
* "de": "USA",
* "en": "United States",
* "es": "Estados Unidos",
* "fr": "États-Unis",
* "ja": "アメリカ合衆国",
* "pt-BR": "Estados Unidos",
* "ru": "США",
* "zh-CN": "美国"
* }
* },
* "location": {
* "accuracy_radius": 20,
* "latitude": 37.6293,
* "longitude": -122.1163,
* "metro_code": 807,
* "time_zone": "America/Los_Angeles"
* },
* "postal": {
* "code": "90001",
* "confidence": 10
* },
* "registered_country": {
* "geoname_id": "6252001",
* "iso_code": "US",
* "names": {
* "de": "USA",
* "en": "United States",
* "es": "Estados Unidos",
* "fr": "États-Unis",
* "ja": "アメリカ合衆国",
* "pt-BR": "Estados Unidos",
* "ru": "США",
* "zh-CN": "美国"
* }
* },
* "represented_country": {
* "geoname_id": "6252001",
* "iso_code": "US",
* "names": {
* "de": "USA",
* "en": "United States",
* "es": "Estados Unidos",
* "fr": "États-Unis",
* "ja": "アメリカ合衆国",
* "pt-BR": "Estados Unidos",
* "ru": "США",
* "zh-CN": "美国"
* },
* "type": "military"
* },
* "subdivisions": [
* {
* "confidence": 50,
* "geoname_id": 5332921,
* "iso_code": "CA",
* "names": {
* "de": "Kalifornien",
* "en": "California",
* "es": "California",
* "fr": "Californie",
* "ja": "カリフォルニア",
* "ru": "Калифорния",
* "zh-CN": "加州"
* }
* }
* ],
* "traits": {
* "autonomous_system_number": "1239",
* "autonomous_system_organization": "Linkem IR WiMax Network",
* "domain": "example.com",
* "is_anonymous_proxy": true,
* "is_transparent_proxy": true,
* "isp": "Linkem spa",
* "ip_address": "1.2.3.4",
* "organization": "Linkem IR WiMax Network",
* "user_type": "traveler",
* },
* "maxmind": {
* "queries_remaining": "54321"
* }
* }
*/