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 #if USE_CURL
  34 #include <curl/curl.h>
  35 #endif
  36
  37 namespace ServerList
  38 {
  39 std::string getFilePath()
  40 {
  41         std::string serverlist_file = g_settings->get("serverlist_file");
  42
  43         std::string dir_path = std::string("client") + DIR_DELIM
  44                 + "serverlist" + DIR_DELIM;
  45         fs::CreateDir(porting::path_user + DIR_DELIM + "client");
  46         fs::CreateDir(porting::path_user + DIR_DELIM + dir_path);
  47         std::string rel_path = dir_path + serverlist_file;
  48         std::string path = porting::path_user + DIR_DELIM + rel_path;
  49         return path;
  50 }
  51
  52 std::vector<ServerListSpec> getLocal()
  53 {
  54         std::string path = ServerList::getFilePath();
  55         std::string liststring;
  56         if(fs::PathExists(path))
  57         {
  58                 std::ifstream istream(path.c_str());
  59                 if(istream.is_open())
  60                 {
  61                         std::ostringstream ostream;
  62                         ostream << istream.rdbuf();
  63                         liststring = ostream.str();
  64                         istream.close();
  65                 }
  66         }
  67
  68         return ServerList::deSerialize(liststring);
  69 }
  70
  71
  72 #if USE_CURL
  73 std::vector<ServerListSpec> getOnline()
  74 {
  75         Json::Value root = fetchJsonValue((g_settings->get("serverlist_url")+"/list").c_str(),0);
  76
  77         std::vector<ServerListSpec> serverlist;
  78
  79         if (root.isArray()) {
  80                 for (unsigned int i = 0; i < root.size(); i++)
  81                 {
  82                         if (root[i].isObject()) {
  83                                 serverlist.push_back(root[i]);
  84                         }
  85                 }
  86         }
  87
  88         return serverlist;
  89 }
  90
  91 #endif
  92
  93 /*
  94         Delete a server fromt he local favorites list
  95 */
  96 bool deleteEntry (ServerListSpec server)
  97 {
  98         std::vector<ServerListSpec> serverlist = ServerList::getLocal();
  99         for(unsigned i = 0; i < serverlist.size(); i++)
 100         {
 101                 if  (serverlist[i]["address"] == server["address"]
 102                 &&   serverlist[i]["port"]    == server["port"])
 103                 {
 104                         serverlist.erase(serverlist.begin() + i);
 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 /*
 117         Insert a server to the local favorites list
 118 */
 119 bool insert (ServerListSpec server)
 120 {
 121         // Remove duplicates
 122         ServerList::deleteEntry(server);
 123
 124         std::vector<ServerListSpec> serverlist = ServerList::getLocal();
 125
 126         // Insert new server at the top of the list
 127         serverlist.insert(serverlist.begin(), server);
 128
 129         std::string path = ServerList::getFilePath();
 130         std::ostringstream ss(std::ios_base::binary);
 131         ss << ServerList::serialize(serverlist);
 132         fs::safeWriteToFile(path, ss.str());
 133
 134         return false;
 135 }
 136
 137 std::vector<ServerListSpec> deSerialize(std::string liststring)
 138 {
 139         std::vector<ServerListSpec> serverlist;
 140         std::istringstream stream(liststring);
 141         std::string line, tmp;
 142         while (std::getline(stream, line))
 143         {
 144                 std::transform(line.begin(), line.end(),line.begin(), ::toupper);
 145                 if (line == "[SERVER]")
 146                 {
 147                         ServerListSpec thisserver;
 148                         std::getline(stream, tmp);
 149                         thisserver["name"] = tmp;
 150                         std::getline(stream, tmp);
 151                         thisserver["address"] = tmp;
 152                         std::getline(stream, tmp);
 153                         thisserver["port"] = tmp;
 154                         std::getline(stream, tmp);
 155                         thisserver["description"] = tmp;
 156                         serverlist.push_back(thisserver);
 157                 }
 158         }
 159         return serverlist;
 160 }
 161
 162 std::string serialize(std::vector<ServerListSpec> serverlist)
 163 {
 164         std::string liststring;
 165         for(std::vector<ServerListSpec>::iterator i = serverlist.begin(); i != serverlist.end(); i++)
 166         {
 167                 liststring += "[server]\n";
 168                 liststring += (*i)["name"].asString() + "\n";
 169                 liststring += (*i)["address"].asString() + "\n";
 170                 liststring += (*i)["port"].asString() + "\n";
 171                 liststring += (*i)["description"].asString() + "\n";
 172                 liststring += "\n";
 173         }
 174         return liststring;
 175 }
 176
 177 std::string serializeJson(std::vector<ServerListSpec> serverlist)
 178 {
 179         Json::Value root;
 180         Json::Value list(Json::arrayValue);
 181         for(std::vector<ServerListSpec>::iterator i = serverlist.begin(); i != serverlist.end(); i++)
 182         {
 183                 list.append(*i);
 184         }
 185         root["list"] = list;
 186         Json::StyledWriter writer;
 187         return writer.write( root );
 188 }
 189
 190
 191 #if USE_CURL
 192 static size_t ServerAnnounceCallback(void *contents, size_t size, size_t nmemb, void *userp)
 193 {
 194     //((std::string*)userp)->append((char*)contents, size * nmemb);
 195     return size * nmemb;
 196 }
 197 void sendAnnounce(std::string action, const std::vector<std::string> & clients_names, double uptime, u32 game_time, std::string gameid, std::vector<ModSpec> mods) {
 198         Json::Value server;
 199         if (action.size())
 200                 server["action"]        = action;
 201         server["port"]          = g_settings->get("port");
 202         server["address"]       = g_settings->get("server_address");
 203         if (action != "delete") {
 204                 server["name"]          = g_settings->get("server_name");
 205                 server["description"]   = g_settings->get("server_description");
 206                 server["version"]       = minetest_version_simple;
 207                 server["url"]           = g_settings->get("server_url");
 208                 server["creative"]      = g_settings->get("creative_mode");
 209                 server["damage"]        = g_settings->get("enable_damage");
 210                 server["password"]      = g_settings->getBool("disallow_empty_password");
 211                 server["pvp"]           = g_settings->getBool("enable_pvp");
 212                 server["clients"]       = (int)clients_names.size();
 213                 server["clients_max"]   = g_settings->get("max_users");
 214                 server["clients_list"]  = Json::Value(Json::arrayValue);
 215                 for(u32 i = 0; i < clients_names.size(); ++i) {
 216                         server["clients_list"].append(clients_names[i]);
 217                 }
 218                 if (uptime >= 1)        server["uptime"]        = (int)uptime;
 219                 if (gameid != "")       server["gameid"]        = gameid;
 220                 if (game_time >= 1)     server["game_time"]     = game_time;
 221         }
 222
 223         if(server["action"] == "start") {
 224                 server["dedicated"]     = g_settings->get("server_dedicated");
 225                 server["privs"]         = g_settings->get("default_privs");
 226                 server["rollback"]      = g_settings->getBool("enable_rollback_recording");
 227                 server["liquid_finite"] = g_settings->getBool("liquid_finite");
 228                 server["mapgen"]        = g_settings->get("mg_name");
 229                 server["mods"]          = Json::Value(Json::arrayValue);
 230                 for(std::vector<ModSpec>::iterator m = mods.begin(); m != mods.end(); m++) {
 231                         server["mods"].append(m->name);
 232                 }
 233                 actionstream << "announcing to " << g_settings->get("serverlist_url") << std::endl;
 234         }
 235
 236         Json::StyledWriter writer;
 237         CURL *curl;
 238         curl = curl_easy_init();
 239         if (curl)
 240         {
 241                 CURLcode res;
 242                 curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1);
 243                 curl_easy_setopt(curl, CURLOPT_URL, (g_settings->get("serverlist_url")+std::string("/announce?json=")+curl_easy_escape(curl, writer.write( server ).c_str(), 0)).c_str());
 244                 //curl_easy_setopt(curl, CURLOPT_USERAGENT, "minetest");
 245                 curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, ServerList::ServerAnnounceCallback);
 246                 //curl_easy_setopt(curl, CURLOPT_WRITEDATA, &liststring);
 247                 curl_easy_setopt(curl, CURLOPT_TIMEOUT, 1);
 248                 curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, 1);
 249                 res = curl_easy_perform(curl);
 250                 if (res != CURLE_OK)
 251                         errorstream<<"Serverlist at url "<<g_settings->get("serverlist_url")<<" error ("<<curl_easy_strerror(res)<<")"<<std::endl;
 252                 curl_easy_cleanup(curl);
 253         }
 254
 255 }
 256 #endif
 257
 258 } //namespace ServerList