src/serverlist.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) 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 Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include <iostream>
  21 #include <sstream>
  22 #include <algorithm>
  23
  24 #include "version.h"
  25 #include "main.h" // for g_settings
  26 #include "settings.h"
  27 #include "serverlist.h"
  28 #include "filesys.h"
  29 #include "porting.h"
  30 #include "log.h"
  31 #include "json/json.h"
  32 #include "convert_json.h"
  33 #include "httpfetch.h"
  34 #include "util/string.h"
  35
  36 namespace ServerList
  37 {
  38
  39 std::string getFilePath()
  40 {
  41         std::string serverlist_file = g_settings->get("serverlist_file");
  42
  43         std::string dir_path = "client" DIR_DELIM "serverlist" DIR_DELIM;
  44         fs::CreateDir(porting::path_user + DIR_DELIM  "client");
  45         fs::CreateDir(porting::path_user + DIR_DELIM + dir_path);
  46         return porting::path_user + DIR_DELIM + dir_path + serverlist_file;
  47 }
  48
  49
  50 std::vector<ServerListSpec> getLocal()
  51 {
  52         std::string path = ServerList::getFilePath();
  53         std::string liststring;
  54         if (fs::PathExists(path)) {
  55                 std::ifstream istream(path.c_str());
  56                 if (istream.is_open()) {
  57                         std::ostringstream ostream;
  58                         ostream << istream.rdbuf();
  59                         liststring = ostream.str();
  60                         istream.close();
  61                 }
  62         }
  63
  64         return deSerialize(liststring);
  65 }
  66
  67
  68 std::vector<ServerListSpec> getOnline()
  69 {
  70         Json::Value root = fetchJsonValue(
  71                         (g_settings->get("serverlist_url") + "/list").c_str(), NULL);
  72
  73         std::vector<ServerListSpec> serverlist;
  74
  75         if (root.isArray()) {
  76                 for (unsigned int i = 0; i < root.size(); i++) {
  77                         if (root[i].isObject()) {
  78                                 serverlist.push_back(root[i]);
  79                         }
  80                 }
  81         }
  82
  83         return serverlist;
  84 }
  85
  86
  87 // Delete a server from the local favorites list
  88 bool deleteEntry(const ServerListSpec &server)
  89 {
  90         std::vector<ServerListSpec> serverlist = ServerList::getLocal();
  91         for (std::vector<ServerListSpec>::iterator it = serverlist.begin();
  92                         it != serverlist.end();) {
  93                 if ((*it)["address"] == server["address"] &&
  94                                 (*it)["port"] == server["port"]) {
  95                         it = serverlist.erase(it);
  96                 } else {
  97                         ++it;
  98                 }
  99         }
 100
 101         std::string path = ServerList::getFilePath();
 102         std::ostringstream ss(std::ios_base::binary);
 103         ss << ServerList::serialize(serverlist);
 104         if (!fs::safeWriteToFile(path, ss.str()))
 105                 return false;
 106         return true;
 107 }
 108
 109 // Insert a server to the local favorites list
 110 bool insert(const ServerListSpec &server)
 111 {
 112         // Remove duplicates
 113         ServerList::deleteEntry(server);
 114
 115         std::vector<ServerListSpec> serverlist = ServerList::getLocal();
 116
 117         // Insert new server at the top of the list
 118         serverlist.insert(serverlist.begin(), server);
 119
 120         std::string path = ServerList::getFilePath();
 121         std::ostringstream ss(std::ios_base::binary);
 122         ss << ServerList::serialize(serverlist);
 123         if (!fs::safeWriteToFile(path, ss.str()))
 124                 return false;
 125
 126         return true;
 127 }
 128
 129 std::vector<ServerListSpec> deSerialize(const std::string &liststring)
 130 {
 131         std::vector<ServerListSpec> serverlist;
 132         std::istringstream stream(liststring);
 133         std::string line, tmp;
 134         while (std::getline(stream, line)) {
 135                 std::transform(line.begin(), line.end(), line.begin(), ::toupper);
 136                 if (line == "[SERVER]") {
 137                         ServerListSpec server;
 138                         std::getline(stream, tmp);
 139                         server["name"] = tmp;
 140                         std::getline(stream, tmp);
 141                         server["address"] = tmp;
 142                         std::getline(stream, tmp);
 143                         server["port"] = tmp;
 144                         std::getline(stream, tmp);
 145                         server["description"] = tmp;
 146                         serverlist.push_back(server);
 147                 }
 148         }
 149         return serverlist;
 150 }
 151
 152 const std::string serialize(const std::vector<ServerListSpec> &serverlist)
 153 {
 154         std::string liststring;
 155         for (std::vector<ServerListSpec>::const_iterator it = serverlist.begin();
 156                         it != serverlist.end();
 157                         it++) {
 158                 liststring += "[server]\n";
 159                 liststring += (*it)["name"].asString() + '\n';
 160                 liststring += (*it)["address"].asString() + '\n';
 161                 liststring += (*it)["port"].asString() + '\n';
 162                 liststring += (*it)["description"].asString() + '\n';
 163                 liststring += '\n';
 164         }
 165         return liststring;
 166 }
 167
 168 const std::string serializeJson(const std::vector<ServerListSpec> &serverlist)
 169 {
 170         Json::Value root;
 171         Json::Value list(Json::arrayValue);
 172         for (std::vector<ServerListSpec>::const_iterator it = serverlist.begin();
 173                         it != serverlist.end();
 174                         it++) {
 175                 list.append(*it);
 176         }
 177         root["list"] = list;
 178         Json::FastWriter writer;
 179         return writer.write(root);
 180 }
 181
 182
 183 #if USE_CURL
 184 void sendAnnounce(const std::string &action,
 185                 const std::vector<std::string> &clients_names,
 186                 const double uptime,
 187                 const u32 game_time,
 188                 const float lag,
 189                 const std::string &gameid,
 190                 const std::vector<ModSpec> &mods)
 191 {
 192         Json::Value server;
 193         server["action"] = action;
 194         server["port"]    = g_settings->getU16("port");
 195         if (g_settings->exists("server_address")) {
 196                 server["address"] = g_settings->get("server_address");
 197         }
 198         if (action != "delete") {
 199                 server["name"]         = g_settings->get("server_name");
 200                 server["description"]  = g_settings->get("server_description");
 201                 server["version"]      = minetest_version_simple;
 202                 server["url"]          = g_settings->get("server_url");
 203                 server["creative"]     = g_settings->getBool("creative_mode");
 204                 server["damage"]       = g_settings->getBool("enable_damage");
 205                 server["password"]     = g_settings->getBool("disallow_empty_password");
 206                 server["pvp"]          = g_settings->getBool("enable_pvp");
 207                 server["uptime"]       = (int) uptime;
 208                 server["game_time"]    = game_time;
 209                 server["clients"]      = (int) clients_names.size();
 210                 server["clients_max"]  = g_settings->getU16("max_users");
 211                 server["clients_list"] = Json::Value(Json::arrayValue);
 212                 for (std::vector<std::string>::const_iterator it = clients_names.begin();
 213                                 it != clients_names.end();
 214                                 ++it) {
 215                         server["clients_list"].append(*it);
 216                 }
 217                 if (gameid != "") server["gameid"] = gameid;
 218         }
 219
 220         if (action == "start") {
 221                 server["dedicated"]         = g_settings->getBool("server_dedicated");
 222                 server["rollback"]          = g_settings->getBool("enable_rollback_recording");
 223                 server["mapgen"]            = g_settings->get("mg_name");
 224                 server["privs"]             = g_settings->get("default_privs");
 225                 server["can_see_far_names"] = g_settings->getBool("unlimited_player_transfer_distance");
 226                 server["mods"]              = Json::Value(Json::arrayValue);
 227                 for (std::vector<ModSpec>::const_iterator it = mods.begin();
 228                                 it != mods.end();
 229                                 ++it) {
 230                         server["mods"].append(it->name);
 231                 }
 232                 actionstream << "Announcing to " << g_settings->get("serverlist_url") << std::endl;
 233         } else {
 234                 if (lag)
 235                         server["lag"] = lag;
 236         }
 237
 238         Json::FastWriter writer;
 239         HTTPFetchRequest fetchrequest;
 240         fetchrequest.url = g_settings->get("serverlist_url") + std::string("/announce");
 241         fetchrequest.post_fields["json"] = writer.write(server);
 242         fetchrequest.multipart = true;
 243         httpfetch_async(fetchrequest);
 244 }
 245 #endif
 246
 247 } //namespace ServerList