minetest.git - modified minetest for gpcfs purposes

	Commit message (Expand)	Author	Age
*	Use scoped app storage on Android (#11466)	rubenwardy	2021-10-15
*	Add nametag background setting and object property (#10937)	rubenwardy	2021-02-17
*	Update our tooling (Clang 5 -> 7, GCC 7 -> 8)	Loïc Blot	2019-03-14
*	Travis: Update clang from 4.0 to 5.0 (#6467)	Loïc Blot	2017-10-09
*	Minetest for C++11 (CMakeLists + Travis)	Loic Blot	2017-06-04
*	Clang-format styles fixes since previous commit	Loïc Blot	2017-04-10
*	Clang-format continuation indent fixes + .gitignore additions	Loïc Blot	2017-04-06
*	Clang format brace style fix	Loïc Blot	2017-04-06
*	Fix clang-format Columns Width	Loic Blot	2017-03-31
*	Add clang format & skip build if no source file modified (#5433)	Loïc Blot	2017-03-25

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1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 // If the item fits fully, delete it else if(newitem.count <= freeSpace(itemdef)) { newitem.clear(); } // Else the item does not fit fully. Return the rest. else { u16 freespace = freeSpace(itemdef); newitem.remove(freespace); } if(restitem) *restitem = newitem; return newitem.empty(); } ItemStack ItemStack::takeItem(u32 takecount) { if(takecount == 0 || count == 0) return ItemStack(); ItemStack result = *this; if(takecount >= count) { // Take all clear(); } else { // Take part remove(takecount); result.count = takecount; } return result; } ItemStack ItemStack::peekItem(u32 peekcount) const { if(peekcount == 0 || count == 0) return ItemStack(); ItemStack result = *this; if(peekcount < count) result.count = peekcount; return result; } /* Inventory */ InventoryList::InventoryList(const std::string &name, u32 size, IItemDefManager *itemdef): m_name(name), m_size(size), m_itemdef(itemdef) { clearItems(); } void InventoryList::clearItems() { m_items.clear(); for (u32 i=0; i < m_size; i++) { m_items.emplace_back(); } setModified(); } void InventoryList::setSize(u/* Minetest Copyright (C) 2015 nerzhul, Loic Blot <loic.blot@unix-experience.fr> This program is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include "server.h" #include "log.h" #include "content_abm.h" #include "content_sao.h" #include "emerge.h" #include "nodedef.h" #include "player.h" #include "rollback_interface.h" #include "scripting_game.h" #include "settings.h" #include "tool.h" #include "version.h" #include "network/networkprotocol.h" #include "network/serveropcodes.h" #include "util/auth.h" #include "util/base64.h" #include "util/pointedthing.h" #include "util/serialize.h" #include "util/srp.h" void Server::handleCommand_Deprecated(NetworkPacket* pkt) { infostream << "Server: " << toServerCommandTable[pkt->getCommand()].name << " not supported anymore" << std::endl; } void Server::handleCommand_Init(NetworkPacket* pkt) { if(pkt->getSize() < 1) return; RemoteClient* client = getClient(pkt->getPeerId(), CS_Created); std::string addr_s; try { Address address = getPeerAddress(pkt->getPeerId()); addr_s = address.serializeString(); } catch (con::PeerNotFoundException &e) { /* * no peer for this packet found * most common reason is peer timeout, e.g. peer didn't * respond for some time, your server was overloaded or * things like that. */ infostream << "Server::ProcessData(): Canceling: peer " << pkt->getPeerId() << " not found" << std::endl; return; } // If net_proto_version is set, this client has already been handled if (client->getState() > CS_Created) { verbosestream << "Server: Ignoring multiple TOSERVER_INITs from " << addr_s << " (peer_id=" << pkt->getPeerId() << ")" << std::endl; return; } verbosestream << "Server: Got TOSERVER_INIT from " << addr_s << " (peer_id=" << pkt->getPeerId() << ")" << std::endl; // Do not allow multiple players in simple singleplayer mode. // This isn't a perfect way to do it, but will suffice for now if (m_simple_singleplayer_mode && m_clients.getClientIDs().size() > 1) { infostream << "Server: Not allowing another client (" << addr_s << ") to connect in simple singleplayer mode" << std::endl; DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_SINGLEPLAYER); return; } // First byte after command is maximum supported // serialization version u8 client_max; u16 supp_compr_modes; u16 min_net_proto_version = 0; u16 max_net_proto_version; std::string playerName; *pkt >> client_max >> supp_compr_modes >> min_net_proto_version >> max_net_proto_version >> playerName; u8 our_max = SER_FMT_VER_HIGHEST_READ; // Use the highest version supported by both u8 depl_serial_v = std::min(client_max, our_max); // If it's lower than the lowest supported, give up. if (depl_serial_v < SER_FMT_VER_LOWEST) depl_serial_v = SER_FMT_VER_INVALID; if (depl_serial_v == SER_FMT_VER_INVALID) { actionstream << "Server: A mismatched client tried to connect from " << addr_s << std::endl; infostream<<"Server: Cannot negotiate serialization version with " << addr_s << std::endl; DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_VERSION); return; } client->setPendingSerializationVersion(depl_serial_v); /* Read and check network protocol version */ u16 net_proto_version = 0; // Figure out a working version if it is possible at all if (max_net_proto_version >= SERVER_PROTOCOL_VERSION_MIN || min_net_proto_version <= SERVER_PROTOCOL_VERSION_MAX) { // If maximum is larger than our maximum, go with our maximum if (max_net_proto_version > SERVER_PROTOCOL_VERSION_MAX) net_proto_version = SERVER_PROTOCOL_VERSION_MAX; // Else go with client's maximum else net_proto_version = max_net_proto_version; } verbosestream << "Server: " << addr_s << ": Protocol version: min: " << min_net_proto_version << ", max: " << max_net_proto_version << ", chosen: " << net_proto_version << std::endl; client->net_proto_version = net_proto_version; // On this handler at least protocol version 25 is required if (net_proto_version < 25 || net_proto_version < SERVER_PROTOCOL_VERSION_MIN || net_proto_version > SERVER_PROTOCOL_VERSION_MAX) { actionstream << "Server: A mismatched client tried to connect from " << addr_s << std::endl; DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_VERSION); return; } if (g_settings->getBool("strict_protocol_version_checking")) { if (net_proto_version != LATEST_PROTOCOL_VERSION) { actionstream << "Server: A mismatched (strict) client tried to " << "connect from " << addr_s << std::endl; DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_VERSION); return; } } /* Validate player name */ const char* playername = playerName.c_str(); size_t pns = playerName.size(); if (pns == 0 || pns > PLAYERNAME_SIZE) { actionstream << "Server: Player with " << ((pns > PLAYERNAME_SIZE) ? "a too long" : "an empty") << " name tried to connect from " << addr_s << std::endl; DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_NAME); return; } if (string_allowed(playerName, PLAYERNAME_ALLOWED_CHARS) == false) { actionstream << "Server: Player with an invalid name " << "tried to connect from " << addr_s << std::endl; DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_CHARS_IN_NAME); return; } m_clients.setPlayerName(pkt->getPeerId(), playername); //TODO (later) case insensitivity std::string legacyPlayerNameCasing = playerName; if (!isSingleplayer() && strcasecmp(playername, "singleplayer") == 0) { actionstream << "Server: Player with the name \"singleplayer\" " << "tried to connect from " << addr_s << std::endl; DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_NAME); return; } { std::string reason; if (m_script->on_prejoinplayer(playername, addr_s, &reason)) { actionstream << "Server: Player with the name \"" << playerName << "\" " << "tried to connect from " << addr_s << " " << "but it was disallowed for the following reason: " << reason << std::endl; DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_CUSTOM_STRING, reason.c_str()); return; } } infostream << "Server: New connection: \"" << playerName << "\" from " << addr_s << " (peer_id=" << pkt->getPeerId() << ")" << std::endl; // Enforce user limit. // Don't enforce for users that have some admin right if (m_clients.getClientIDs(CS_Created).size() >= g_settings->getU16("max_users") && !checkPriv(playername, "server") && !checkPriv(playername, "ban") && !checkPriv(playername, "privs") && !checkPriv(playername, "password") && playername != g_settings->get("name")) { actionstream << "Server: " << playername << " tried to join from " << addr_s << ", but there" << " are already max_users=" << g_settings->getU16("max_users") << " players." << std::endl; DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_TOO_MANY_USERS); return; } /* Compose auth methods for answer */ std::string encpwd; // encrypted Password field for the user bool has_auth = m_script->getAuth(playername, &encpwd, NULL); u32 auth_mechs = 0; client->chosen_mech = AUTH_MECHANISM_NONE; if (has_auth) { std::vector<std::string> pwd_components = str_split(encpwd, '#'); if (pwd_components.size() == 4) { if (pwd_components return taken; } void InventoryList::moveItemSomewhere(u32 i, InventoryList *dest, u32 count) { // Take item from source list ItemStack item1; if (count == 0) item1 = changeItem(i, ItemStack()); else item1 = takeItem(i, count); if (item1.empty()) return; ItemStack leftover; leftover = dest->addItem(item1); if (!leftover.empty()) { // Add the remaining part back to the source item addItem(i, leftover); } } u32 InventoryList::moveItem(u32 i, InventoryList *dest, u32 dest_i, u32 count, bool swap_if_needed, bool *did_swap) { if (this == dest && i == dest_i) return count; // Take item from source list ItemStack item1; if (count == 0) item1 = changeItem(i, ItemStack()); else item1 = takeItem(i, count); if (item1.empty()) return 0; // Try to add the item to destination list u32 oldcount = item1.count; item1 = dest->addItem(dest_i, item1); // If something is returned, the item was not fully added if (!item1.empty()) { // If olditem is returned, nothing was added. bool nothing_added = (item1.count == oldcount); // If something else is returned, part of the item was left unadded. // Add the other part back to the source item addItem(i, item1); // If olditem is returned, nothing was added. // Swap the items if (nothing_added && swap_if_needed) { // Tell that we swapped if (did_swap != NULL) { *did_swap = true; } // Take item from source list item1 = changeItem(i, ItemStack()); // Adding was not possible, swap the items. ItemStack item2 = dest->changeItem(dest_i, item1); // Put item from destination list to the source list changeItem(i, item2); } } return (oldcount - item1.count); } /* Inventory */ Inventory::~Inventory() { clear(); } void Inventory::clear() { for (auto &m_list : m_lists) { delete m_list; } m_lists.clear(); setModified(); } Inventory::Inventory(IItemDefManager *itemdef) { m_itemdef = itemdef; setModified(); } Inventory::Inventory(const Inventory &other) { *this = other; } Inventory & Inventory::operator = (const Inventory &other) { // Gracefully handle self assignment if(this != &other) { clear(); m_itemdef = other.m_itemdef; for (InventoryList *list : other.m_lists) { m_lists.push_back(new InventoryList(*list)); } setModified(); } return *this; } bool Inventory::operator == (const Inventory &other) const { if(m_lists.size() != other.m_lists.size()) return false; for(u32 i=0; i<m_lists.size(); i++) { if(*m_lists[i] != *other.m_lists[i]) return false; } return true; } void Inventory::serialize(std::ostream &os, bool incremental) const { //std::cout << "Serialize " << (int)incremental << ", n=" << m_lists.size() << std::endl; for (const InventoryList *list : m_lists) { if (!incremental || list->checkModified()) { os << "List " << list->getName() << " " << list->getSize() << "\n"; list->serialize(os, incremental); } else { os << "KeepList " << list->getName() << "\n"; } } os<<"EndInventory\n"; } void Inventory::deSerialize(std::istream &is) { std::vector<InventoryList *> new_lists; new_lists.reserve(m_lists.size()); while (is.good()) { std::string line; std::getline(is, line, '\n'); std::istringstream iss(line); std::string name; std::getline(iss, name, ' '); if (name == "EndInventory" || name == "end") { // Remove all lists that were not sent for (auto &list : m_lists) { if (std::find(new_lists.begin(), new_lists.end(), list) != new_lists.end()) continue; delete list; list = nullptr; setModified(); } m_lists.erase(std::remove(m_lists.begin(), m_lists.end(), nullptr), m_lists.end()); return; } if (name == "List") { std::string listname; u32 listsize; std::getline(iss, listname, ' '); iss>>listsize; InventoryList *list = getList(listname); bool create_new = !list; if (create_new) list = new InventoryList(listname, listsize, m_itemdef); else list->setSize(listsize); list->deSerialize(is); new_lists.push_back(list); if (create_new) m_lists.push_back(list); } else if (name == "KeepList") { // Incrementally sent list std::string listname; std::getline(iss, listname, ' '); InventoryList *list = getList(listname); if (list) { new_lists.push_back(list); } else { errorstream << "Inventory::deSerialize(): Tried to keep list '" << listname << "' which is non-existent." << std::endl; } } // Any additional fields will throw errors when received by a client // older than PROTOCOL_VERSION 38 } // Contents given to deSerialize() were not terminated properly: throw error. std::ostringstream ss; ss << "Malformatted inventory (damaged?). " << m_lists.size() << " lists read." << std::endl; throw SerializationError(ss.str()); } InventoryList * Inventory::addList(const std::string &name, u32 size) { setModified(); // Remove existing lists s32 i = getListIndex(name); if (i != -1) { delete m_lists[i]; m_lists[i] = new InventoryList(name, size, m_itemdef); m_lists[i]->setModified(); return m_lists[i]; } //don't create list with invalid name if (name.find(' ') != std::string::npos) return nullptr; InventoryList *list = new InventoryList(name, size, m_itemdef); list->setModified(); m_lists.push_back(list); return list; } InventoryList * Inventory::getList(const std::string &name) { s32 i = getListIndex(name); if(i == -1) return nullptr; return m_lists[i]; } bool Inventory::deleteList(const std::string &name) { s32 i = getListIndex(name); if(i == -1) return false; setModified(); delete m_lists[i]; m_lists.erase(m_lists.begin() + i); return true; } const InventoryList *Inventory::getList(const std::string &name) const { s32 i = getListIndex(name); if(i == -1) return nullptr; return m_lists[i]; } s32 Inventory::getListIndex(const std::string &name) const { for(u32 i=0; i<m_lists.size(); i++) { if(m_lists[i]->getName() == name) return i; } return -1; } //END { std::string reason; if (m_script->on_prejoinplayer(playername, addr_s, &reason)) { actionstream << "Server: Player with the name \"" << playername << "\" " << "tried to connect from " << addr_s << " " << "but it was disallowed for the following reason: " << reason << std::endl; DenyAccess_Legacy(pkt->getPeerId(), utf8_to_wide(reason.c_str())); return; } } infostream<<"Server: New connection: \""<<playername<<"\" from " <<addr_s<<" (peer_id="<<pkt->getPeerId()<<")"<<std::endl; // Get password char given_password[PASSWORD_SIZE]; if (pkt->getSize() < 1 + PLAYERNAME_SIZE + PASSWORD_SIZE) { // old version - assume blank password given_password[0] = 0; } else { for (u16 i = 0; i < PASSWORD_SIZE - 1; i++) { given_password[i] = pkt->getChar(21 + i); } given_password[PASSWORD_SIZE - 1] = 0; } if (!base64_is_valid(given_password)) { actionstream << "Server: " << playername << " supplied invalid password hash" << std::endl; DenyAccess_Legacy(pkt->getPeerId(), L"Invalid password hash"); return; } // Enforce user limit. // Don't enforce for users that have some admin right if (m_clients.getClientIDs(CS_Created).size() >= g_settings->getU16("max_users") && !checkPriv(playername, "server") && !checkPriv(playername, "ban") && !checkPriv(playername, "privs") && !checkPriv(playername, "password") && playername != g_settings->get("name")) { actionstream << "Server: " << playername << " tried to join, but there" << " are already max_users=" << g_settings->getU16("max_users") << " players." << std::endl; DenyAccess_Legacy(pkt->getPeerId(), L"Too many users."); return; } std::string checkpwd; // Password hash to check against bool has_auth = m_script->getAuth(playername, &checkpwd, NULL); // If no authentication info exists for user, create it if (!has_auth) { if (!isSingleplayer() && g_settings->getBool("disallow_empty_password") && std::string(given_password) == "") { actionstream << "Server: " << playername << " supplied empty password" << std::endl; DenyAccess_Legacy(pkt->getPeerId(), L"Empty passwords are " L"disallowed. Set a password and try again."); return; } std::string raw_default_password = g_settings->get("default_password"); std::string initial_password = translatePassword(playername, raw_default_password); // If default_password is empty, allow any initial password if (raw_default_password.length() == 0) initial_password = given_password; m_script->createAuth(playername, initial_password); } has_auth = m_script->getAuth(playername, &checkpwd, NULL); if (!has_auth) { actionstream << "Server: " << playername << " cannot be authenticated" << " (auth handler does not work?)" << std::endl; DenyAccess_Legacy(pkt->getPeerId(), L"Not allowed to login"); return; } if (given_password != checkpwd) { actionstream << "Server: " << playername << " supplied wrong password" << std::endl; DenyAccess_Legacy(pkt->getPeerId(), L"Wrong password"); return; } RemotePlayer *player = static_cast<RemotePlayer*>(m_env->getPlayer(playername)); if (player && player->peer_id != 0) { actionstream << "Server: " << playername << ": Failed to emerge player" << " (player allocated to an another client)" << std::endl; DenyAccess_Legacy(pkt->getPeerId(), L"Another client is connected with this " L"name. If your client closed unexpectedly, try again in " L"a minute."); } m_clients.setPlayerName(pkt->getPeerId(), playername); /* Answer with a TOCLIENT_INIT */ NetworkPacket resp_pkt(TOCLIENT_INIT_LEGACY, 1 + 6 + 8 + 4, pkt->getPeerId()); resp_pkt << (u8) deployed << (v3s16) floatToInt(v3f(0,0,0), BS) << (u64) m_env->getServerMap().getSeed() << g_settings->getFloat("dedicated_server_step"); Send(&resp_pkt); m_clients.event(pkt->getPeerId(), CSE_InitLegacy); } void Server::handleCommand_Init2(NetworkPacket* pkt) { verbosestream << "Server: Got TOSERVER_INIT2 from " << pkt->getPeerId() << std::endl; m_clients.event(pkt->getPeerId(), CSE_GotInit2); u16 protocol_version = m_clients.getProtocolVersion(pkt->getPeerId()); ///// begin compatibility code PlayerSAO* playersao = NULL; if (protocol_version <= 22) { playersao = StageTwoClientInit(pkt->getPeerId()); if (playersao == NULL) { actionstream << "TOSERVER_INIT2 stage 2 client init failed for peer " << pkt->getPeerId() << std::endl; return; } } ///// end compatibility code /* Send some initialization data */ infostream << "Server: Sending content to " << getPlayerName(pkt->getPeerId()) << std::endl; // Send player movement settings SendMovement(pkt->getPeerId()); // Send item definitions SendItemDef(pkt->getPeerId(), m_itemdef, protocol_version); // Send node definitions SendNodeDef(pkt->getPeerId(), m_nodedef, protocol_version); m_clients.event(pkt->getPeerId(), CSE_SetDefinitionsSent); // Send media announcement sendMediaAnnouncement(pkt->getPeerId()); // Send detached inventories sendDetachedInventories(pkt->getPeerId()); // Send time of day u16 time = m_env->getTimeOfDay(); float time_speed = g_settings->getFloat("time_speed"); SendTimeOfDay(pkt->getPeerId(), time, time_speed); ///// begin compatibility code if (protocol_version <= 22) { m_clients.event(pkt->getPeerId(), CSE_SetClientReady); m_script->on_joinplayer(playersao); } ///// end compatibility code // Warnings about protocol version can be issued here if (getClient(pkt->getPeerId())->net_proto_version < LATEST_PROTOCOL_VERSION) { SendChatMessage(pkt->getPeerId(), L"# Server: WARNING: YOUR CLIENT'S " L"VERSION MAY NOT BE FULLY COMPATIBLE WITH THIS SERVER!"); } } void Server::handleCommand_RequestMedia(NetworkPacket* pkt) { std::vector<std::string> tosend; u16 numfiles; *pkt >> numfiles; infostream << "Sending " << numfiles << " files to " << getPlayerName(pkt->getPeerId()) << std::endl; verbosestream << "TOSERVER_REQUEST_MEDIA: " << std::endl; for (u16 i = 0; i < numfiles; i++) { std::string name; *pkt >> name; tosend.push_back(name); verbosestream << "TOSERVER_REQUEST_MEDIA: requested file " << name << std::endl; } sendRequestedMedia(pkt->getPeerId(), tosend); } void Server::handleCommand_ReceivedMedia(NetworkPacket* pkt) { } void Server::handleCommand_ClientReady(NetworkPacket* pkt) { u16 peer_id = pkt->getPeerId(); u16 peer_proto_ver = getClient(peer_id, CS_InitDone)->net_proto_version; // clients <= protocol version 22 did not send ready message, // they're already initialized if (peer_proto_ver <= 22) { infostream << "Client sent message not expected by a " << "client using protocol version <= 22," << "disconnecting peer_id: " << peer_id << std::endl; m_con.DisconnectPeer(peer_id); return; } PlayerSAO* playersao = StageTwoClientInit(peer_id); if (playersao == NULL) { actionstream << "TOSERVER_CLIENT_READY stage 2 client init failed for peer_id: " << peer_id << std::endl; m_con.DisconnectPeer(peer_id); return; } if (pkt->getSize() < 8) { errorstream << "TOSERVER_CLIENT_READY client sent inconsistent data, disconnecting peer_id: " << peer_id << std::endl; m_con.DisconnectPeer(peer_id); return; } u8 major_ver, minor_ver, patch_ver, reserved; std::string full_ver; *pkt >> major_ver >> minor_ver >> patch_ver >> reserved >> full_ver; m_clients.setClientVersion( peer_id, major_ver, minor_ver, patch_ver, full_ver); m_clients.event(peer_id, CSE_SetClientReady); m_script->on_joinplayer(playersao); } void Server::handleCommand_GotBlocks(NetworkPacket* pkt) { if (pkt->getSize() < 1) return; /* [0] u16 command [2] u8 count [3] v3s16 pos_0 [3+6] v3s16 pos_1 ... */ u8 count; *pkt >> count; RemoteClient *client = getClient(pkt->getPeerId()); for (u16 i = 0; i < count; i++) { if ((s16)pkt->getSize() < 1 + (i + 1) * 6) throw con::InvalidIncomingDataException ("GOTBLOCKS length is too short"); v3s16 p; *pkt >> p; client->GotBlock(p); } } void Server::handleCommand_PlayerPos(NetworkPacket* pkt) { if (pkt->getSize() < 12 + 12 + 4 + 4) return; v3s32 ps, ss; s32 f32pitch, f32yaw; *pkt >> ps; *pkt >> ss; *pkt >> f32pitch; *pkt >> f32yaw; f32 pitch = (f32)f32pitch / 100.0; f32 yaw = (f32)f32yaw / 100.0; u32 keyPressed = 0; if (pkt->getSize() >= 12 + 12 + 4 + 4 + 4) *pkt >> keyPressed; v3f position((f32)ps.X / 100.0, (f32)ps.Y / 100.0, (f32)ps.Z / 100.0); v3f speed((f32)ss.X / 100.0, (f32)ss.Y / 100.0, (f32)ss.Z / 100.0); pitch = modulo360f(pitch); yaw = modulo360f(yaw); Player *player = m_env->getPlayer(pkt->getPeerId()); if (player == NULL) { errorstream << "Server::ProcessData(): Canceling: " "No player for peer_id=" << pkt->getPeerId() << " disconnecting peer!" << std::endl; m_con.DisconnectPeer(pkt->getPeerId()); return; } // If player is dead we don't care of this packet if (player->isDead()) { verbosestream << "TOSERVER_PLAYERPOS: " << player->getName() << " is dead. Ignoring packet"; return; } PlayerSAO *playersao = player->getPlayerSAO(); if (playersao == NULL) { errorstream << "Server::ProcessData(): Canceling: " "No player object for peer_id=" << pkt->getPeerId() << " disconnecting peer!" << std::endl; m_con.DisconnectPeer(pkt->getPeerId()); return; } player->setPosition(position); player->setSpeed(speed); player->setPitch(pitch); player->setYaw(yaw); player->keyPressed = keyPressed; player->control.up = (keyPressed & 1); player->control.down = (keyPressed & 2); player->control.left = (keyPressed & 4); player->control.right = (keyPressed & 8); player->control.jump = (keyPressed & 16); player->control.aux1 = (keyPressed & 32); player->control.sneak = (keyPressed & 64); player->control.LMB = (keyPressed & 128); player->control.RMB = (keyPressed & 256); if (playersao->checkMovementCheat()) { // Call callbacks m_script->on_cheat(playersao, "moved_too_fast"); SendMovePlayer(pkt->getPeerId()); } } void Server::handleCommand_DeletedBlocks(NetworkPacket* pkt) { if (pkt->getSize() < 1) return; /* [0] u16 command [2] u8 count [3] v3s16 pos_0 [3+6] v3s16 pos_1 ... */ u8 count; *pkt >> count; RemoteClient *client = getClient(pkt->getPeerId()); for (u16 i = 0; i < count; i++) { if ((s16)pkt->getSize() < 1 + (i + 1) * 6) throw con::InvalidIncomingDataException ("DELETEDBLOCKS length is too short"); v3s16 p; *pkt >> p; client->SetBlockNotSent(p); } } void Server::handleCommand_InventoryAction(NetworkPacket* pkt) { Player *player = m_env->getPlayer(pkt->getPeerId()); if (player == NULL) { errorstream << "Server::ProcessData(): Canceling: " "No player for peer_id=" << pkt->getPeerId() << " disconnecting peer!" << std::endl; m_con.DisconnectPeer(pkt->getPeerId()); return; } PlayerSAO *playersao = player->getPlayerSAO(); if (playersao == NULL) { errorstream << "Server::ProcessData(): Canceling: " "No player object for peer_id=" << pkt->getPeerId() << " disconnecting peer!" << std::endl; m_con.DisconnectPeer(pkt->getPeerId()); return; } // Strip command and create a stream std::string datastring(pkt->getString(0), pkt->getSize()); verbosestream << "TOSERVER_INVENTORY_ACTION: data=" << datastring << std::endl; std::istringstream is(datastring, std::ios_base::binary); // Create an action InventoryAction *a = InventoryAction::deSerialize(is); if (a == NULL) { infostream << "TOSERVER_INVENTORY_ACTION: " << "InventoryAction::deSerialize() returned NULL" << std::endl; return; } // If something goes wrong, this player is to blame RollbackScopeActor rollback_scope(m_rollback, std::string("player:")+player->getName()); /* Note: Always set inventory not sent, to repair cases where the client made a bad prediction. */ /* Handle restrictions and special cases of the move action */ if (a->getType() == IACTION_MOVE) { IMoveAction *ma = (IMoveAction*)a; ma->from_inv.applyCurrentPlayer(player->getName()); ma->to_inv.applyCurrentPlayer(player->getName()); setInventoryModified(ma->from_inv, false); setInventoryModified(ma->to_inv, false); bool from_inv_is_current_player = (ma->from_inv.type == InventoryLocation::PLAYER) && (ma->from_inv.name == player->getName()); bool to_inv_is_current_player = (ma->to_inv.type == InventoryLocation::PLAYER) && (ma->to_inv.name == player->getName()); /* Disable moving items out of craftpreview */ if (ma->from_list == "craftpreview") { infostream << "Ignoring IMoveAction from " << (ma->from_inv.dump()) << ":" << ma->from_list << " to " << (ma->to_inv.dump()) << ":" << ma->to_list << " because src is " << ma->from_list << std::endl; delete a; return; } /* Disable moving items into craftresult and craftpreview */ if (ma->to_list == "craftpreview" || ma->to_list == "craftresult") { infostream << "Ignoring IMoveAction from " << (ma->from_inv.dump()) << ":" << ma->from_list << " to " << (ma->to_inv.dump()) << ":" << ma->to_list << " because dst is " << ma->to_list << std::endl; delete a; return; } // Disallow moving items in elsewhere than player's inventory // if not allowed to interact if (!checkPriv(player->getName(), "interact") && (!from_inv_is_current_player || !to_inv_is_current_player)) { infostream << "Cannot move outside of player's inventory: " << "No interact privilege" << std::endl; delete a; return; } } /* Handle restrictions and special cases of the drop action */ else if (a->getType() == IACTION_DROP) { IDropAction *da = (IDropAction*)a; da->from_inv.applyCurrentPlayer(player->getName()); setInventoryModified(da->from_inv, false); /* Disable dropping items out of craftpreview */ if (da->from_list == "craftpreview") { infostream << "Ignoring IDropAction from " << (da->from_inv.dump()) << ":" << da->from_list << " because src is " << da->from_list << std::endl; delete a; return; } // Disallow dropping items if not allowed to interact if (!checkPriv(player->getName(), "interact")) { delete a; return; } } /* Handle restrictions and special cases of the craft action */ else if (a->getType() == IACTION_CRAFT) { ICraftAction *ca = (ICraftAction*)a; ca->craft_inv.applyCurrentPlayer(player->getName()); setInventoryModified(ca->craft_inv, false); //bool craft_inv_is_current_player = // (ca->craft_inv.type == InventoryLocation::PLAYER) && // (ca->craft_inv.name == player->getName()); // Disallow crafting if not allowed to interact if (!checkPriv(player->getName(), "interact")) { infostream << "Cannot craft: " << "No interact privilege" << std::endl; delete a; return; } } // Do the action a->apply(this, playersao, this); // Eat the action delete a; SendInventory(playersao); } void Server::handleCommand_ChatMessage(NetworkPacket* pkt) { /* u16 command u16 length wstring message */ u16 len; *pkt >> len; std::wstring message; for (u16 i = 0; i < len; i++) { u16 tmp_wchar; *pkt >> tmp_wchar; message += (wchar_t)tmp_wchar; } Player *player = m_env->getPlayer(pkt->getPeerId()); if (player == NULL) { errorstream << "Server::ProcessData(): Canceling: " "No player for peer_id=" << pkt->getPeerId() << " disconnecting peer!" << std::endl; m_con.DisconnectPeer(pkt->getPeerId()); return; } // If something goes wrong, this player is to blame RollbackScopeActor rollback_scope(m_rollback, std::string("player:")+player->getName()); // Get player name of this client std::wstring name = narrow_to_wide(player->getName()); // Run script hook bool ate = m_script->on_chat_message(player->getName(), wide_to_narrow(message)); // If script ate the message, don't proceed if (ate) return; // Line to send to players std::wstring line; // Whether to send to the player that sent the line bool send_to_sender_only = false; // Commands are implemented in Lua, so only catch invalid // commands that were not "eaten" and send an error back if (message[0] == L'/') { message = message.substr(1); send_to_sender_only = true; if (message.length() == 0) line += L"-!- Empty command"; else line += L"-!- Invalid command: " + str_split(message, L' ')[0]; } else { if (checkPriv(player->getName(), "shout")) { line += L"<"; line += name; line += L"> "; line += message; } else { line += L"-!- You don't have permission to shout."; send_to_sender_only = true; } } if (line != L"") { /* Send the message to sender */ if (send_to_sender_only) { SendChatMessage(pkt->getPeerId(), line); } /* Send the message to others */ else { actionstream << "CHAT: " << wide_to_narrow(line)<<std::endl; std::vector<u16> clients = m_clients.getClientIDs(); for (std::vector<u16>::iterator i = clients.begin(); i != clients.end(); ++i) { if (*i != pkt->getPeerId()) SendChatMessage(*i, line); } } } } void Server::handleCommand_Damage(NetworkPacket* pkt) { u8 damage; *pkt >> damage; Player *player = m_env->getPlayer(pkt->getPeerId()); if (player == NULL) { errorstream << "Server::ProcessData(): Canceling: " "No player for peer_id=" << pkt->getPeerId() << " disconnecting peer!" << std::endl; m_con.DisconnectPeer(pkt->getPeerId()); return; } PlayerSAO *playersao = player->getPlayerSAO(); if (playersao == NULL) { errorstream << "Server::ProcessData(): Canceling: " "No player object for peer_id=" << pkt->getPeerId() << " disconnecting peer!" << std::endl; m_con.DisconnectPeer(pkt->getPeerId()); return; } if (g_settings->getBool("enable_damage")) { actionstream << player->getName() << " damaged by " << (int)damage << " hp at " << PP(player->getPosition() / BS) << std::endl; playersao->setHP(playersao->getHP() - damage); SendPlayerHPOrDie(playersao); } } void Server::handleCommand_Breath(NetworkPacket* pkt) { u16 breath; *pkt >> breath; Player *player = m_env->getPlayer(pkt->getPeerId()); if (player == NULL) { errorstream << "Server::ProcessData(): Canceling: " "No player for peer_id=" << pkt->getPeerId() << " disconnecting peer!" << std::endl; m_con.DisconnectPeer(pkt->getPeerId()); return; } /* * If player is dead, we don't need to update the breath * He is dead ! */ if (player->isDead()) { verbosestream << "TOSERVER_BREATH: " << player->getName() << " is dead. Ignoring packet"; return; } PlayerSAO *playersao = player->getPlayerSAO(); if (playersao == NULL) { errorstream << "Server::ProcessData(): Canceling: " "No player object for peer_id=" << pkt->getPeerId() << " disconnecting peer!" << std::endl; m_con.DisconnectPeer(pkt->getPeerId()); return; } playersao->setBreath(breath); SendPlayerBreath(pkt->getPeerId()); } void Server::handleCommand_Password(NetworkPacket* pkt) { if (pkt->getSize() != PASSWORD_SIZE * 2) return; std::string oldpwd; std::string newpwd; // Deny for clients using the new protocol RemoteClient* client = getClient(pkt->getPeerId(), CS_Created); if (client->net_proto_version >= 25) { infostream << "Server::handleCommand_Password(): Denying change: " << " Client protocol version for peer_id=" << pkt->getPeerId() << " too new!" << std::endl; return; } for (u16 i = 0; i < PASSWORD_SIZE - 1; i++) { char c = pkt->getChar(i); if (c == 0) break; oldpwd += c; } for (u16 i = 0; i < PASSWORD_SIZE - 1; i++) { char c = pkt->getChar(PASSWORD_SIZE + i); if (c == 0) break; newpwd += c; } Player *player = m_env->getPlayer(pkt->getPeerId()); if (player == NULL) { errorstream << "Server::ProcessData(): Canceling: " "No player for peer_id=" << pkt->getPeerId() << " disconnecting peer!" << std::endl; m_con.DisconnectPeer(pkt->getPeerId()); return; } if (!base64_is_valid(newpwd)) { infostream<<"Server: " << player->getName() << " supplied invalid password hash" << std::endl; // Wrong old password supplied!! SendChatMessage(pkt->getPeerId(), L"Invalid new password hash supplied. Password NOT changed."); return; } infostream << "Server: Client requests a password change from " << "'" << oldpwd << "' to '" << newpwd << "'" << std::endl; std::string playername = player->getName(); std::string checkpwd; m_script->getAuth(playername, &checkpwd, NULL); if (oldpwd != checkpwd) { infostream << "Server: invalid old password" << std::endl; // Wrong old password supplied!! SendChatMessage(pkt->getPeerId(), L"Invalid old password supplied. Password NOT changed."); return; } bool success = m_script->setPassword(playername, newpwd); if (success) { actionstream << player->getName() << " changes password" << std::endl; SendChatMessage(pkt->getPeerId(), L"Password change successful."); } else { actionstream << player->getName() << " tries to change password but " << "it fails" << std::endl; SendChatMessage(pkt->getPeerId(), L"Password change failed or unavailable."); } } void Server::handleCommand_PlayerItem(NetworkPacket* pkt) { if (pkt->getSize() < 2) return; Player *player = m_env->getPlayer(pkt->getPeerId()); if (player == NULL) { errorstream << "Server::ProcessData(): Canceling: " "No player for peer_id=" << pkt->getPeerId() << " disconnecting peer!" << std::endl; m_con.DisconnectPeer(pkt->getPeerId()); return; } PlayerSAO *playersao = player->getPlayerSAO(); if (playersao == NULL) { errorstream << "Server::ProcessData(): Canceling: " "No player object for peer_id=" << pkt->getPeerId() << " disconnecting peer!" << std::endl; m_con.DisconnectPeer(pkt->getPeerId()); return; } u16 item; *pkt >> item; playersao->setWieldIndex(item); } void Server::handleCommand_Respawn(NetworkPacket* pkt) { Player *player = m_env->getPlayer(pkt->getPeerId()); if (player == NULL) { errorstream << "Server::ProcessData(): Canceling: " "No player for peer_id=" << pkt->getPeerId() << " disconnecting peer!" << std::endl; m_con.DisconnectPeer(pkt->getPeerId()); return; } if (!player->isDead()) return; RespawnPlayer(pkt->getPeerId()); actionstream << player->getName() << " respawns at " << PP(player->getPosition()/BS) << std::endl; // ActiveObject is added to environment in AsyncRunStep after // the previous addition has been successfully removed } void Server::handleCommand_Interact(NetworkPacket* pkt) { std::string datastring(pkt->getString(0), pkt->getSize()); std::istringstream is(datastring, std::ios_base::binary); /* [0] u16 command [2] u8 action [3] u16 item [5] u32 length of the next item [9] serialized PointedThing actions: 0: start digging (from undersurface) or use 1: stop digging (all parameters ignored) 2: digging completed 3: place block or item (to abovesurface) 4: use item */ u8 action = readU8(is); u16 item_i = readU16(is); std::istringstream tmp_is(deSerializeLongString(is), std::ios::binary); PointedThing pointed; pointed.deSerialize(tmp_is); verbosestream << "TOSERVER_INTERACT: action=" << (int)action << ", item=" << item_i << ", pointed=" << pointed.dump() << std::endl; Player *player = m_env->getPlayer(pkt->getPeerId()); if (player == NULL) { errorstream << "Server::ProcessData(): Canceling: " "No player for peer_id=" << pkt->getPeerId() << " disconnecting peer!" << std::endl; m_con.DisconnectPeer(pkt->getPeerId()); return; } PlayerSAO *playersao = player->getPlayerSAO(); if (playersao == NULL) { errorstream << "Server::ProcessData(): Canceling: " "No player object for peer_id=" << pkt->getPeerId() << " disconnecting peer!" << std::endl; m_con.DisconnectPeer(pkt->getPeerId()); return; } if (player->isDead()) { verbosestream << "TOSERVER_INTERACT: " << player->getName() << " is dead. Ignoring packet"; return; } v3f player_pos = playersao->getLastGoodPosition(); // Update wielded item playersao->setWieldIndex(item_i); // Get pointed to node (undefined if not POINTEDTYPE_NODE) v3s16 p_under = pointed.node_undersurface; v3s16 p_above = pointed.node_abovesurface; // Get pointed to object (NULL if not POINTEDTYPE_OBJECT) ServerActiveObject *pointed_object = NULL; if (pointed.type == POINTEDTHING_OBJECT) { pointed_object = m_env->getActiveObject(pointed.object_id); if (pointed_object == NULL) { verbosestream << "TOSERVER_INTERACT: " "pointed object is NULL" << std::endl; return; } } v3f pointed_pos_under = player_pos; v3f pointed_pos_above = player_pos; if (pointed.type == POINTEDTHING_NODE) { pointed_pos_under = intToFloat(p_under, BS); pointed_pos_above = intToFloat(p_above, BS); } else if (pointed.type == POINTEDTHING_OBJECT) { pointed_pos_under = pointed_object->getBasePosition(); pointed_pos_above = pointed_pos_under; } /* Check that target is reasonably close (only when digging or placing things) */ if (action == 0 || action == 2 || action == 3) { float d = player_pos.getDistanceFrom(pointed_pos_under); float max_d = BS * 14; // Just some large enough value if (d > max_d) { actionstream << "Player " << player->getName() << " tried to access " << pointed.dump() << " from too far: " << "d=" << d <<", max_d=" << max_d << ". ignoring." << std::endl; // Re-send block to revert change on client-side RemoteClient *client = getClient(pkt->getPeerId()); v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_under, BS)); client->SetBlockNotSent(blockpos); // Call callbacks m_script->on_cheat(playersao, "interacted_too_far"); // Do nothing else return; } } /* Make sure the player is allowed to do it */ if (!checkPriv(player->getName(), "interact")) { actionstream<<player->getName()<<" attempted to interact with " <<pointed.dump()<<" without 'interact' privilege" <<std::endl; // Re-send block to revert change on client-side RemoteClient *client = getClient(pkt->getPeerId()); // Digging completed -> under if (action == 2) { v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_under, BS)); client->SetBlockNotSent(blockpos); } // Placement -> above if (action == 3) { v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_above, BS)); client->SetBlockNotSent(blockpos); } return; } /* If something goes wrong, this player is to blame */ RollbackScopeActor rollback_scope(m_rollback, std::string("player:")+player->getName()); /* 0: start digging or punch object */ if (action == 0) { if (pointed.type == POINTEDTHING_NODE) { /* NOTE: This can be used in the future to check if somebody is cheating, by checking the timing. */ MapNode n(CONTENT_IGNORE); bool pos_ok; n = m_env->getMap().getNodeNoEx(p_under, &pos_ok); if (pos_ok) n = m_env->getMap().getNodeNoEx(p_under, &pos_ok); if (!pos_ok) { infostream << "Server: Not punching: Node not found." << " Adding block to emerge queue." << std::endl; m_emerge->enqueueBlockEmerge(pkt->getPeerId(), getNodeBlockPos(p_above), false); } if (n.getContent() != CONTENT_IGNORE) m_script->node_on_punch(p_under, n, playersao, pointed); // Cheat prevention playersao->noCheatDigStart(p_under); } else if (pointed.type == POINTEDTHING_OBJECT) { // Skip if object has been removed if (pointed_object->m_removed) return; actionstream<<player->getName()<<" punches object " <<pointed.object_id<<": " <<pointed_object->getDescription()<<std::endl; ItemStack punchitem = playersao->getWieldedItem(); ToolCapabilities toolcap = punchitem.getToolCapabilities(m_itemdef); v3f dir = (pointed_object->getBasePosition() - (player->getPosition() + player->getEyeOffset()) ).normalize(); float time_from_last_punch = playersao->resetTimeFromLastPunch(); s16 src_original_hp = pointed_object->getHP(); s16 dst_origin_hp = playersao->getHP(); pointed_object->punch(dir, &toolcap, playersao, time_from_last_punch); // If the object is a player and its HP changed if (src_original_hp != pointed_object->getHP() && pointed_object->getType() == ACTIVEOBJECT_TYPE_PLAYER) { SendPlayerHPOrDie((PlayerSAO *)pointed_object); } // If the puncher is a player and its HP changed if (dst_origin_hp != playersao->getHP()) SendPlayerHPOrDie(playersao); } } // action == 0 /* 1: stop digging */ else if (action == 1) { } // action == 1 /* 2: Digging completed */ else if (action == 2) { // Only digging of nodes if (pointed.type == POINTEDTHING_NODE) { bool pos_ok; MapNode n = m_env->getMap().getNodeNoEx(p_under, &pos_ok); if (!pos_ok) { infostream << "Server: Not finishing digging: Node not found." << " Adding block to emerge queue." << std::endl; m_emerge->enqueueBlockEmerge(pkt->getPeerId(), getNodeBlockPos(p_above), false); } /* Cheat prevention */ bool is_valid_dig = true; if (!isSingleplayer() && !g_settings->getBool("disable_anticheat")) { v3s16 nocheat_p = playersao->getNoCheatDigPos(); float nocheat_t = playersao->getNoCheatDigTime(); playersao->noCheatDigEnd(); // If player didn't start digging this, ignore dig if (nocheat_p != p_under) { infostream << "Server: NoCheat: " << player->getName() << " started digging " << PP(nocheat_p) << " and completed digging " << PP(p_under) << "; not digging." << std::endl; is_valid_dig = false; // Call callbacks m_script->on_cheat(playersao, "finished_unknown_dig"); } // Get player's wielded item ItemStack playeritem; InventoryList *mlist = playersao->getInventory()->getList("main"); if (mlist != NULL) playeritem = mlist->getItem(playersao->getWieldIndex()); ToolCapabilities playeritem_toolcap = playeritem.getToolCapabilities(m_itemdef); // Get diggability and expected digging time DigParams params = getDigParams(m_nodedef->get(n).groups, &playeritem_toolcap); // If can't dig, try hand if (!params.diggable) { const ItemDefinition &hand = m_itemdef->get(""); const ToolCapabilities *tp = hand.tool_capabilities; if (tp) params = getDigParams(m_nodedef->get(n).groups, tp); } // If can't dig, ignore dig if (!params.diggable) { infostream << "Server: NoCheat: " << player->getName() << " completed digging " << PP(p_under) << ", which is not diggable with tool. not digging." << std::endl; is_valid_dig = false; // Call callbacks m_script->on_cheat(playersao, "dug_unbreakable"); } // Check digging time // If already invalidated, we don't have to if (!is_valid_dig) { // Well not our problem then } // Clean and long dig else if (params.time > 2.0 && nocheat_t * 1.2 > params.time) { // All is good, but grab time from pool; don't care if // it's actually available playersao->getDigPool().grab(params.time); } // Short or laggy dig // Try getting the time from pool else if (playersao->getDigPool().grab(params.time)) { // All is good } // Dig not possible else { infostream << "Server: NoCheat: " << player->getName() << " completed digging " << PP(p_under) << "too fast; not digging." << std::endl; is_valid_dig = false; // Call callbacks m_script->on_cheat(playersao, "dug_too_fast"); } } /* Actually dig node */ if (is_valid_dig && n.getContent() != CONTENT_IGNORE) m_script->node_on_dig(p_under, n, playersao); v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_under, BS)); RemoteClient *client = getClient(pkt->getPeerId()); // Send unusual result (that is, node not being removed) if (m_env->getMap().getNodeNoEx(p_under).getContent() != CONTENT_AIR) { // Re-send block to revert change on client-side client->SetBlockNotSent(blockpos); } else { client->ResendBlockIfOnWire(blockpos); } } } // action == 2 /* 3: place block or right-click object */ else if (action == 3) { ItemStack item = playersao->getWieldedItem(); // Reset build time counter if (pointed.type == POINTEDTHING_NODE && item.getDefinition(m_itemdef).type == ITEM_NODE) getClient(pkt->getPeerId())->m_time_from_building = 0.0; if (pointed.type == POINTEDTHING_OBJECT) { // Right click object // Skip if object has been removed if (pointed_object->m_removed) return; actionstream << player->getName() << " right-clicks object " << pointed.object_id << ": " << pointed_object->getDescription() << std::endl; // Do stuff pointed_object->rightClick(playersao); } else if (m_script->item_OnPlace( item, playersao, pointed)) { // Placement was handled in lua // Apply returned ItemStack if (playersao->setWieldedItem(item)) { SendInventory(playersao); } } // If item has node placement prediction, always send the // blocks to make sure the client knows what exactly happened RemoteClient *client = getClient(pkt->getPeerId()); v3s16 blockpos = getNodeBlockPos(floatToInt(pointed_pos_above, BS)); v3s16 blockpos2 = getNodeBlockPos(floatToInt(pointed_pos_under, BS)); if (item.getDefinition(m_itemdef).node_placement_prediction != "") { client->SetBlockNotSent(blockpos); if (blockpos2 != blockpos) { client->SetBlockNotSent(blockpos2); } } else { client->ResendBlockIfOnWire(blockpos); if (blockpos2 != blockpos) { client->ResendBlockIfOnWire(blockpos2); } } } // action == 3 /* 4: use */ else if (action == 4) { ItemStack item = playersao->getWieldedItem(); actionstream << player->getName() << " uses " << item.name << ", pointing at " << pointed.dump() << std::endl; if (m_script->item_OnUse( item, playersao, pointed)) { // Apply returned ItemStack if (playersao->setWieldedItem(item)) { SendInventory(playersao); } } } // action == 4 /* Catch invalid actions */ else { infostream << "WARNING: Server: Invalid action " << action << std::endl; } } void Server::handleCommand_RemovedSounds(NetworkPacket* pkt) { u16 num; *pkt >> num; for (u16 k = 0; k < num; k++) { s32 id; *pkt >> id; std::map<s32, ServerPlayingSound>::iterator i = m_playing_sounds.find(id); if (i == m_playing_sounds.end()) continue; ServerPlayingSound &psound = i->second; psound.clients.erase(pkt->getPeerId()); if (psound.clients.empty()) m_playing_sounds.erase(i++); } } void Server::handleCommand_NodeMetaFields(NetworkPacket* pkt) { v3s16 p; std::string formname; u16 num; *pkt >> p >> formname >> num; StringMap fields; for (u16 k = 0; k < num; k++) { std::string fieldname; *pkt >> fieldname; fields[fieldname] = pkt->readLongString(); } Player *player = m_env->getPlayer(pkt->getPeerId()); if (player == NULL) { errorstream << "Server::ProcessData(): Canceling: " "No player for peer_id=" << pkt->getPeerId() << " disconnecting peer!" << std::endl; m_con.DisconnectPeer(pkt->getPeerId()); return; } PlayerSAO *playersao = player->getPlayerSAO(); if (playersao == NULL) { errorstream << "Server::ProcessData(): Canceling: " "No player object for peer_id=" << pkt->getPeerId() << " disconnecting peer!" << std::endl; m_con.DisconnectPeer(pkt->getPeerId()); return; } // If something goes wrong, this player is to blame RollbackScopeActor rollback_scope(m_rollback, std::string("player:")+player->getName()); // Check the target node for rollback data; leave others unnoticed RollbackNode rn_old(&m_env->getMap(), p, this); m_script->node_on_receive_fields(p, formname, fields, playersao); // Report rollback data RollbackNode rn_new(&m_env->getMap(), p, this); if (rollback() && rn_new != rn_old) { RollbackAction action; action.setSetNode(p, rn_old, rn_new); rollback()->reportAction(action); } } void Server::handleCommand_InventoryFields(NetworkPacket* pkt) { std::string formname; u16 num; *pkt >> formname >> num; StringMap fields; for (u16 k = 0; k < num; k++) { std::string fieldname; *pkt >> fieldname; fields[fieldname] = pkt->readLongString(); } Player *player = m_env->getPlayer(pkt->getPeerId()); if (player == NULL) { errorstream << "Server::ProcessData(): Canceling: " "No player for peer_id=" << pkt->getPeerId() << " disconnecting peer!" << std::endl; m_con.DisconnectPeer(pkt->getPeerId()); return; } PlayerSAO *playersao = player->getPlayerSAO(); if (playersao == NULL) { errorstream << "Server::ProcessData(): Canceling: " "No player object for peer_id=" << pkt->getPeerId() << " disconnecting peer!" << std::endl; m_con.DisconnectPeer(pkt->getPeerId()); return; } m_script->on_playerReceiveFields(playersao, formname, fields); } void Server::handleCommand_FirstSrp(NetworkPacket* pkt) { RemoteClient* client = getClient(pkt->getPeerId(), CS_Invalid); ClientState cstate = client->getState(); std::string playername = client->getName(); std::string salt; std::string verification_key; std::string addr_s = getPeerAddress(pkt->getPeerId()).serializeString(); u8 is_empty; *pkt >> salt >> verification_key >> is_empty; verbosestream << "Server: Got TOSERVER_FIRST_SRP from " << addr_s << ", with is_empty= " << is_empty << std::endl; // Either this packet is sent because the user is new or to change the password if (cstate == CS_HelloSent) { if (!client->isMechAllowed(AUTH_MECHANISM_FIRST_SRP)) { actionstream << "Server: Client from " << addr_s << " tried to set password without being " << "authenticated, or the username being new." << std::endl; DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_UNEXPECTED_DATA); return; } if (!isSingleplayer() && g_settings->getBool("disallow_empty_password") && is_empty == 1) { actionstream << "Server: " << playername << " supplied empty password from " << addr_s << std::endl; DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_EMPTY_PASSWORD); return; } std::string initial_ver_key; std::string raw_default_password = g_settings->get("default_password"); // If default_password is empty, allow any initial password if (raw_default_password.length() == 0) { initial_ver_key = encodeSRPVerifier(verification_key, salt); } else { initial_ver_key = getSRPVerifier(playername, raw_default_password); } m_script->createAuth(playername, initial_ver_key); acceptAuth(pkt->getPeerId(), false); } else { if (cstate < CS_SudoMode) { infostream << "Server::ProcessData(): Ignoring TOSERVER_FIRST_SRP from " << addr_s << ": " << "Client has wrong state " << cstate << "." << std::endl; return; } m_clients.event(pkt->getPeerId(), CSE_SudoLeave); std::string pw_db_field = encodeSRPVerifier(verification_key, salt); bool success = m_script->setPassword(playername, pw_db_field); if (success) { actionstream << playername << " changes password" << std::endl; SendChatMessage(pkt->getPeerId(), L"Password change successful."); } else { actionstream << playername << " tries to change password but " << "it fails" << std::endl; SendChatMessage(pkt->getPeerId(), L"Password change failed or unavailable."); } } } void Server::handleCommand_SrpBytesA(NetworkPacket* pkt) { RemoteClient* client = getClient(pkt->getPeerId(), CS_Invalid); ClientState cstate = client->getState(); bool wantSudo = (cstate == CS_Active); if (!((cstate == CS_HelloSent) || (cstate == CS_Active))) { actionstream << "Server: got SRP _A packet in wrong state " << cstate << " from " << getPeerAddress(pkt->getPeerId()).serializeString() << ". Ignoring." << std::endl; return; } if (client->chosen_mech != AUTH_MECHANISM_NONE) { actionstream << "Server: got SRP _A packet, while auth" << "is already going on with mech " << client->chosen_mech << " from " << getPeerAddress(pkt->getPeerId()).serializeString() << " (wantSudo=" << wantSudo << "). Ignoring." << std::endl; if (wantSudo) { DenySudoAccess(pkt->getPeerId()); return; } else { DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_UNEXPECTED_DATA); return; } } std::string bytes_A; u8 based_on; *pkt >> bytes_A >> based_on; infostream << "Server: TOSERVER_SRP_BYTES_A received with " << "based_on=" << int(based_on) << " and len_A=" << bytes_A.length() << "." << std::endl; AuthMechanism chosen = (based_on == 0) ? AUTH_MECHANISM_LEGACY_PASSWORD : AUTH_MECHANISM_SRP; if (wantSudo) { if (!client->isSudoMechAllowed(chosen)) { actionstream << "Server: Player \"" << client->getName() << "\" at " << getPeerAddress(pkt->getPeerId()).serializeString() << " tried to change password using unallowed mech " << chosen << "." << std::endl; DenySudoAccess(pkt->getPeerId()); return; } } else { if (!client->isMechAllowed(chosen)) { actionstream << "Server: Client tried to authenticate from " << getPeerAddress(pkt->getPeerId()).serializeString() << " using unallowed mech " << chosen << "." << std::endl; DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_UNEXPECTED_DATA); return; } } client->chosen_mech = chosen; std::string bytes_s; std::string bytes_v; if (based_on == 0) { char *p_bytes_s = 0; size_t len_s = 0; char *p_bytes_v = 0; size_t len_v = 0; getSRPVerifier(client->getName(), client->enc_pwd, &p_bytes_s, &len_s, &p_bytes_v, &len_v); bytes_s = std::string(p_bytes_s, len_s); bytes_v = std::string(p_bytes_v, len_v); free(p_bytes_s); free(p_bytes_v); } else if (!decodeSRPVerifier(client->enc_pwd, &bytes_s, &bytes_v)) { // Non-base64 errors should have been catched in the init handler actionstream << "Server: User " << client->getName() << " tried to log in, but srp verifier field" << " was invalid (most likely invalid base64)." << std::endl; DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_SERVER_FAIL); return; } char *bytes_B = 0; size_t len_B = 0; client->auth_data = srp_verifier_new(SRP_SHA256, SRP_NG_2048, client->getName().c_str(), (const unsigned char *) bytes_s.c_str(), bytes_s.size(), (const unsigned char *) bytes_v.c_str(), bytes_v.size(), (const unsigned char *) bytes_A.c_str(), bytes_A.size(), NULL, 0, (unsigned char **) &bytes_B, &len_B, NULL, NULL); if (!bytes_B) { actionstream << "Server: User " << client->getName() << " tried to log in, SRP-6a safety check violated in _A handler." << std::endl; if (wantSudo) { DenySudoAccess(pkt->getPeerId()); return; } else { DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_UNEXPECTED_DATA); return; } } NetworkPacket resp_pkt(TOCLIENT_SRP_BYTES_S_B, 0, pkt->getPeerId()); resp_pkt << bytes_s << std::string(bytes_B, len_B); Send(&resp_pkt); } void Server::handleCommand_SrpBytesM(NetworkPacket* pkt) { RemoteClient* client = getClient(pkt->getPeerId(), CS_Invalid); ClientState cstate = client->getState(); bool wantSudo = (cstate == CS_Active); verbosestream << "Server: Recieved TOCLIENT_SRP_BYTES_M." << std::endl; if (!((cstate == CS_HelloSent) || (cstate == CS_Active))) { actionstream << "Server: got SRP _M packet in wrong state " << cstate << " from " << getPeerAddress(pkt->getPeerId()).serializeString() << ". Ignoring." << std::endl; return; } if ((client->chosen_mech != AUTH_MECHANISM_SRP) && (client->chosen_mech != AUTH_MECHANISM_LEGACY_PASSWORD)) { actionstream << "Server: got SRP _M packet, while auth" << "is going on with mech " << client->chosen_mech << " from " << getPeerAddress(pkt->getPeerId()).serializeString() << " (wantSudo=" << wantSudo << "). Denying." << std::endl; if (wantSudo) { DenySudoAccess(pkt->getPeerId()); return; } else { DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_UNEXPECTED_DATA); return; } } std::string bytes_M; *pkt >> bytes_M; if (srp_verifier_get_session_key_length((SRPVerifier *) client->auth_data) != bytes_M.size()) { actionstream << "Server: User " << client->getName() << " at " << getPeerAddress(pkt->getPeerId()).serializeString() << " sent bytes_M with invalid length " << bytes_M.size() << std::endl; DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_UNEXPECTED_DATA); return; } unsigned char *bytes_HAMK = 0; srp_verifier_verify_session((SRPVerifier *) client->auth_data, (unsigned char *)bytes_M.c_str(), &bytes_HAMK); if (!bytes_HAMK) { if (wantSudo) { actionstream << "Server: User " << client->getName() << " at " << getPeerAddress(pkt->getPeerId()).serializeString() << " tried to change their password, but supplied wrong" << " (SRP) password for authentication." << std::endl; DenySudoAccess(pkt->getPeerId()); return; } else { actionstream << "Server: User " << client->getName() << " at " << getPeerAddress(pkt->getPeerId()).serializeString() << " supplied wrong (SRP) password from address " << getPeerAddress(pkt->getPeerId()).serializeString() << "." << std::endl; DenyAccess(pkt->getPeerId(), SERVER_ACCESSDENIED_WRONG_PASSWORD); return; } } acceptAuth(pkt->getPeerId(), wantSudo); }