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> server_list;
  74
  75         if (!root.isObject()) {
  76                 return server_list;
  77         }
  78
  79         root = root["list"];
  80         if (!root.isArray()) {
  81                 return server_list;
  82         }
  83
  84         for (unsigned int i = 0; i < root.size(); i++) {
  85                 if (root[i].isObject()) {
  86                         server_list.push_back(root[i]);
  87                 }
  88         }
  89
  90         return server_list;
  91 }
  92
  93
  94 // Delete a server from the local favorites list
  95 bool deleteEntry(const ServerListSpec &server)
  96 {
  97         std::vector<ServerListSpec> serverlist = ServerList::getLocal();
  98         for (std::vector<ServerListSpec>::iterator it = serverlist.begin();
  99                         it != serverlist.end();) {
 100                 if ((*it)["address"] == server["address"] &&
 101                                 (*it)["port"] == server["port"]) {
 102                         it = serverlist.erase(it);
 103                 } else {
 104                         ++it;
 105                 }
 106         }
 107
 108         std::string path = ServerList::getFilePath();
 109         std::ostringstream ss(std::ios_base::binary);
 110         ss << ServerList::serialize(serverlist);
 111         if (!fs::safeWriteToFile(path, ss.str()))
 112                 return false;
 113         return true;
 114 }
 115
 116 // Insert a server to the local favorites list
 117 bool insert(const ServerListSpec &server)
 118 {
 119         // Remove duplicates
 120         ServerList::deleteEntry(server);
 121
 122         std::vector<ServerListSpec> serverlist = ServerList::getLocal();
 123
 124         // Insert new server at the top of the list
 125         serverlist.insert(serverlist.begin(), server);
 126
 127         std::string path = ServerList::getFilePath();
 128         std::ostringstream ss(std::ios_base::binary);
 129         ss << ServerList::serialize(serverlist);
 130         if (!fs::safeWriteToFile(path, ss.str()))
 131                 return false;
 132
 133         return true;
 134 }
 135
 136 std::vector<ServerListSpec> deSerialize(const std::string &liststring)
 137 {
 138         std::vector<ServerListSpec> serverlist;
 139         std::istringstream stream(liststring);
 140         std::string line, tmp;
 141         while (std::getline(stream, line)) {
 142                 std::transform(line.begin(), line.end(), line.begin(), ::toupper);
 143                 if (line == "[SERVER]") {
 144                         ServerListSpec server;
 145                         std::getline(stream, tmp);
 146                         server["name"] = tmp;
 147                         std::getline(stream, tmp);
 148                         server["address"] = tmp;
 149                         std::getline(stream, tmp);
 150                         server["port"] = tmp;
 151                         std::getline(stream, tmp);
 152                         server["description"] = tmp;
 153                         serverlist.push_back(server);
 154                 }
 155         }
 156         return serverlist;
 157 }
 158
 159 const std::string serialize(const std::vector<ServerListSpec> &serverlist)
 160 {
 161         std::string liststring;
 162         for (std::vector<ServerListSpec>::const_iterator it = serverlist.begin();
 163                         it != serverlist.end();
 164                         it++) {
 165                 liststring += "[server]\n";
 166                 liststring += (*it)["name"].asString() + '\n';
 167                 liststring += (*it)["address"].asString() + '\n';
 168                 liststring += (*it)["port"].asString() + '\n';
 169                 liststring += (*it)["description"].asString() + '\n';
 170                 liststring += '\n';
 171         }
 172         return liststring;
 173 }
 174
 175 const std::string serializeJson(const std::vector<ServerListSpec> &serverlist)
 176 {
 177         Json::Value root;
 178         Json::Value list(Json::arrayValue);
 179         for (std::vector<ServerListSpec>::const_iterator it = serverlist.begin();
 180                         it != serverlist.end();
 181                         it++) {
 182                 list.append(*it);
 183         }
 184         root["list"] = list;
 185         Json::FastWriter writer;
 186         return writer.write(root);
 187 }
 188
 189
 190 #if USE_CURL
 191 void sendAnnounce(const std::string &action,
 192                 const std::vector<std::string> &clients_names,
 193                 const double uptime,
 194                 const u32 game_time,
 195                 const float lag,
 196                 const std::string &gameid,
 197                 const std::vector<ModSpec> &mods)
 198 {
 199         Json::Value server;
 200         server["action"] = action;
 201         server["port"]    = g_settings->getU16("port");
 202         if (g_settings->exists("server_address")) {
 203                 server["address"] = g_settings->get("server_address");
 204         }
 205         if (action != "delete") {
 206                 server["name"]         = g_settings->get("server_name");
 207                 server["description"]  = g_settings->get("server_description");
 208                 server["version"]      = minetest_version_simple;
 209                 server["url"]          = g_settings->get("server_url");
 210                 server["creative"]     = g_settings->getBool("creative_mode");
 211                 server["damage"]       = g_settings->getBool("enable_damage");
 212                 server["password"]     = g_settings->getBool("disallow_empty_password");
 213                 server["pvp"]          = g_settings->getBool("enable_pvp");
 214                 server["uptime"]       = (int) uptime;
 215                 server["game_time"]    = game_time;
 216                 server["clients"]      = (int) clients_names.size();
 217                 server["clients_max"]  = g_settings->getU16("max_users");
 218                 server["clients_list"] = Json::Value(Json::arrayValue);
 219                 for (std::vector<std::string>::const_iterator it = clients_names.begin();
 220                                 it != clients_names.end();
 221                                 ++it) {
 222                         server["clients_list"].append(*it);
 223                 }
 224                 if (gameid != "") server["gameid"] = gameid;
 225         }
 226
 227         if (action == "start") {
 228                 server["dedicated"]         = g_settings->getBool("server_dedicated");
 229                 server["rollback"]          = g_settings->getBool("enable_rollback_recording");
 230                 server["mapgen"]            = g_settings->get("mg_name");
 231                 server["privs"]             = g_settings->get("default_privs");
 232                 server["can_see_far_names"] = g_settings->getBool("unlimited_player_transfer_distance");
 233                 server["mods"]              = Json::Value(Json::arrayValue);
 234                 for (std::vector<ModSpec>::const_iterator it = mods.begin();
 235                                 it != mods.end();
 236                                 ++it) {
 237                         server["mods"].append(it->name);
 238                 }
 239                 actionstream << "Announcing to " << g_settings->get("serverlist_url") << std::endl;
 240         } else {
 241                 if (lag)
 242                         server["lag"] = lag;
 243         }
 244
 245         Json::FastWriter writer;
 246         HTTPFetchRequest fetch_request;
 247         fetch_request.url = g_settings->get("serverlist_url") + std::string("/announce");
 248         fetch_request.post_fields["json"] = writer.write(server);
 249         fetch_request.multipart = true;
 250         httpfetch_async(fetch_request);
 251 }
 252 #endif
 253
 254 } //namespace ServerList