amxmodx/modules/geoip/geoip_main.cpp
2018-09-28 17:20:29 +02:00

256 lines
5.8 KiB
C++

// 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_main.h"
#include "geoip_natives.h"
#include "geoip_util.h"
#include <time.h>
MMDB_s HandleDB;
ke::Vector<ke::AString> LangList;
bool NativesRegistered;
void OnAmxxAttach()
{
if (loadDatabase())
{
MF_AddNatives(GeoipNatives);
NativesRegistered = true;
}
REG_SVR_COMMAND("geoip", OnGeoipCommand);
}
void OnAmxxDetach()
{
MMDB_close(&HandleDB);
LangList.clear();
}
void OnGeoipCommand()
{
const auto cmd = CMD_ARGV(1);
if (!strcmp(cmd, "version"))
{
if (!HandleDB.filename)
{
MF_PrintSrvConsole("\n Database is not loaded.\n");
return;
}
const auto meta_dump = "\n"
" Database metadata\n"
" Node count: %i\n"
" Record size: %i bits\n"
" IP version: IPv%i\n"
" Binary format: %i.%i\n"
" Build epoch: %llu (%s)\n"
" Type: %s\n"
" Languages: ";
char date[40];
strftime(date, sizeof date, "%Y-%m-%d %H:%M:%S UTC", gmtime(reinterpret_cast<const time_t *>(&HandleDB.metadata.build_epoch)));
fprintf(stdout, meta_dump,
HandleDB.metadata.node_count,
HandleDB.metadata.record_size,
HandleDB.metadata.ip_version,
HandleDB.metadata.binary_format_major_version,
HandleDB.metadata.binary_format_minor_version,
HandleDB.metadata.build_epoch,
date,
HandleDB.metadata.database_type);
for (size_t i = 0; i < HandleDB.metadata.languages.count; ++i)
{
fprintf(stdout, "%s", HandleDB.metadata.languages.names[i]);
if (i < HandleDB.metadata.languages.count - 1)
{
fprintf(stdout, " ");
}
}
fprintf(stdout, "\n");
fprintf(stdout, " Description:\n");
for (size_t i = 0; i < HandleDB.metadata.description.count; ++i)
{
fprintf(stdout, " %s: %s\n",
HandleDB.metadata.description.descriptions[i]->language,
HandleDB.metadata.description.descriptions[i]->description);
}
fprintf(stdout, "\n");
}
else if (!strcmp(cmd, "dump"))
{
if (!HandleDB.filename)
{
MF_PrintSrvConsole("\n Database is not loaded.\n\n");
return;
}
const auto num_args = CMD_ARGC();
if (num_args < 3)
{
MF_PrintSrvConsole("\n An IP address must be provided.\n\n");
return;
}
const auto ip = stripPort(const_cast<char *>(CMD_ARGV(2)));
auto gai_error = 0;
auto mmdb_error = 0;
auto result = MMDB_lookup_string(&HandleDB, ip, &gai_error, &mmdb_error);
if (gai_error != 0 || mmdb_error != MMDB_SUCCESS || !result.found_entry)
{
MF_PrintSrvConsole("\n Either look up failed or no found result.\n\n");
return;
}
MMDB_entry_data_list_s *entry_data_list = nullptr;
int status;
if ((status = MMDB_get_entry_data_list(&result.entry, &entry_data_list)) != MMDB_SUCCESS || entry_data_list == nullptr)
{
MF_PrintSrvConsole("\n Could not retrieve data list - %s.\n\n", MMDB_strerror(status));
return;
}
const char *file = nullptr;
FILE *fp = nullptr;
if (num_args > 3)
{
file = CMD_ARGV(3);
fp = fopen(MF_BuildPathname("%s", file), "w");
}
if (!fp)
{
file = nullptr;
fp = stdout;
}
fprintf(fp, "\n");
MMDB_dump_entry_data_list(fp, entry_data_list, 2);
fprintf(fp, "\n");
if (file)
{
fclose(fp);
}
MMDB_free_entry_data_list(entry_data_list);
}
else if (!strcmp(cmd, "reload"))
{
const auto isDatabaseLoaded = HandleDB.filename != nullptr;
if (isDatabaseLoaded)
{
MMDB_close(&HandleDB);
}
if (loadDatabase() && !NativesRegistered)
{
MF_AddNatives(GeoipNatives);
NativesRegistered = true;
}
}
else
{
MF_PrintSrvConsole("\n");
MF_PrintSrvConsole(" Usage: geoip <command> [argument]\n");
MF_PrintSrvConsole(" Commands:\n");
MF_PrintSrvConsole(" version - display geoip database metadata\n");
MF_PrintSrvConsole(" reload - reload geoip database\n");
MF_PrintSrvConsole(" dump <ip> [output file] - dump all data from an IP address formatted in a JSON-ish fashion.\n");
MF_PrintSrvConsole(" An output file is mod-based and if not provided, it will print in the console.\n");
MF_PrintSrvConsole("\n");
}
}
bool loadDatabase()
{
const auto isDatabaseLoaded = HandleDB.filename != nullptr;
if (isDatabaseLoaded)
{
return true;
}
const char *databases[] =
{
"City",
"Country" // Is the default shipped database with AMXX.
};
const auto modName = MF_GetModname();
const auto dataDir = MF_GetLocalInfo("amxx_datadir", "addons/amxmodx/data");
char file[260];
auto status = -1;
for (auto& database : databases)
{
// MF_BuildPathname not used because backslash
// makes CreateFileMapping failing under windows.
ke::SafeSprintf(file, sizeof file, "%s/%s/GeoLite2-%s.mmdb", modName, dataDir, database);
status = MMDB_open(file, MMDB_MODE_MMAP, &HandleDB);
if (status == MMDB_SUCCESS)
{
break;
}
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 false;
}
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]));
}
return true;
}