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/* |
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* This file is part of Crossfire TRT, the Multiplayer Online Role Playing Game. |
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* |
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* Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team |
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* Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team |
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* Copyright (©) 1992,2007 Frank Tore Johansen |
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* |
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* Crossfire TRT is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License as published by the Free |
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* Software Foundation; either version 2 of the License, or (at your option) |
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* any later version. |
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* |
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* This program is distributed in the hope that it will be useful, but |
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* for more details. |
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* |
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* You should have received a copy of the GNU General Public License along |
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* with Crossfire TRT; if not, write to the Free Software Foundation, Inc. 51 |
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* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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* |
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* The authors can be reached via e-mail to <crossfire@schmorp.de> |
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*/ |
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|
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#ifndef CLIENT_H |
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#define CLIENT_H |
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|
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#include <deque> |
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#include <bitset> |
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#include <tr1/unordered_set> |
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|
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// (possibly) max. number of objects "per page" in the ground container |
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#define FLOORBOX_PAGESIZE 50 |
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|
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struct MapCell |
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{ |
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tag_t player; // this is, unfortunately, very wasteful of memory space, but pretty bandwidth-efficient |
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int count; /* This is really darkness in the map1 command */ |
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faceidx faces[MAP_LAYERS]; |
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unsigned char stat_hp; // health of something in this space, or 0 |
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unsigned char flags; |
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uint8_t smooth[MAP_LAYERS]; |
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}; |
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|
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#define MAX_CLIENT_X MAP_CLIENT_X |
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#define MAX_CLIENT_Y MAP_CLIENT_Y |
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|
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struct Map |
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{ |
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struct MapCell cells[MAX_CLIENT_X][MAX_CLIENT_Y]; |
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}; |
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|
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/* True max is 16383 given current map compaction method */ |
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#define MAXANIMNUM 10000 |
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|
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struct statsinfo |
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{ |
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char *range, *title; |
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}; |
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|
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/* This contains basic information on the socket structure. status is its |
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* current state. we set up our on buffers for sending/receiving, so we can |
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* handle some higher level functions. fd is the actual file descriptor we |
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* are using. |
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*/ |
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|
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/* Only one map mode can actually be used, so lets make it a switch |
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* instead of having a bunch of different fields that needed to |
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* get toggled. |
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*/ |
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enum { Map0Cmd = 0, Map1Cmd = 1, Map1aCmd = 2 }; |
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|
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// states the socket can be in |
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enum { |
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ST_DEAD, // socket is dead |
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ST_SETUP, // initial handshake / setup / login |
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ST_PLAYING, // logged in an playing |
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ST_CUSTOM, // waiting for custom reply |
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|
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ST_GET_PARTY_PASSWORD, |
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}; |
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|
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// a handler for a specific type of packet |
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enum { |
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PF_PLAYER = 0x01, // must have valid player / will by synchronised |
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PF_PLAYING = 0x02, // must be in playing state |
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PF_COMMAND0 = 0x04, // command starts at offset 0 |
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PF_COMMAND6 = 0x08, // command starts at offset 6 |
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}; |
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|
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struct packet_type |
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{ |
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const char *name; |
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void *cb; |
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int flags; |
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}; |
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|
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struct command |
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{ |
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tstamp stamp; |
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const packet_type *handler; |
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char *data; |
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int datalen; |
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|
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~command () |
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{ |
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sfree<char> (data, datalen + 1); |
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} |
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}; |
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|
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/* how many times we are allowed to give the wrong password before being kicked. */ |
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#define MAX_PASSWORD_FAILURES 5 |
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|
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INTERFACE_CLASS (client) // should become player when newsocket is a baseclass of player |
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struct client : zero_initialised, attachable |
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{ |
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int ACC (RW, fd); |
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unsigned int inbuf_len; // number of bytes valid in inbuf |
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statsinfo stats; |
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object_vector_index ACC (RO, active); |
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player_ptr ACC (RO, pl); |
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|
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/* The following is the setup for a ring buffer for storing output |
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* data that the OS can't handle right away. |
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*/ |
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struct |
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{ |
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char data[SOCKETBUFSIZE]; |
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int start; |
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int len; |
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} outputbuffer; |
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|
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char *ACC (RW, host); /* Which host it is connected from (ip address) */ |
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uint8 ACC (RW, state); /* Input state of the player (name, password, etc */ |
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|
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sint8 ACC (RW, last_level); /* Last level we sent to client */ |
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uint16 ACC (RW, last_flags); /* fire/run on flags for last tick */ |
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float ACC (RW, last_weapon_sp); /* if diff than weapon_sp, update client */ |
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sint32 ACC (RW, last_weight); /* Last weight as sent to client; -1 means do not send weight */ |
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sint32 ACC (RW, last_weight_limit); /* Last weight limit transmitted to client */ |
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uint32 ACC (RW, last_path_attuned); /* Last spell attunment sent to client */ |
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uint32 ACC (RW, last_path_repelled); /* Last spell repelled sent to client */ |
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uint32 ACC (RW, last_path_denied); /* Last spell denied sent to client */ |
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living ACC (RO, last_stats); /* Last stats as sent to client */ |
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float ACC (RW, last_speed); /* Last speed as sent to client */ |
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sint16 ACC (RW, last_resist[NROFATTACKS]);/* last resist values sent to client */ |
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sint64 ACC (RW, last_skill_exp[NUM_SKILLS]);/* shadow register. if != exp. obj update client */ |
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|
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bool ACC (RW, force_face0); // client workaround for buggy checksum calculation in gcfclient |
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bool ACC (RW, force_bad_checksum); // client workaround for buggy checksum calculation in gcfclient |
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bool ACC (RW, force_image_newmap); // client workaround for client not redrawing map on image upload |
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bool ACC (RW, enable_bg_scrub); // client workaround, gcfclient becomes unusable if you send it images |
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|
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bool ACC (RW, afk); /* player is afk */ |
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bool ACC (RW, facecache); /* If true, client is caching images */ |
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bool ACC (RW, sent_scroll); |
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bool ACC (RW, sound); /* does the client want sound */ |
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bool ACC (RW, newmapcmd); /* Send newmap command when entering new map SMACFIGGEN */ |
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bool ACC (RW, plugincmd); // extend the protocol through a plug-in */ |
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bool ACC (RW, mapinfocmd); // return map info and send map change info |
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bool ACC (RW, extcmd); // call into extensions/plugins |
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bool ACC (RW, extmap); // extend map comamnd with extra data |
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bool ACC (RW, buggy_mapscroll); // client crashes on large mapscrolls |
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bool ACC (RW, darkness); /* True if client wants darkness information */ |
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bool ACC (RW, image2); /* Client wants image2/face2 commands */ |
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uint8_t ACC (RW, fxix); // client implements fx and ix (face|image extended) commands |
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bool ACC (RW, update_look); /* If true, we need to send the look window */ |
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bool ACC (RW, has_readable_type); /* If true client accept additional text information */ |
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/* used to arrange text in books, scrolls, or scripted dialogs */ |
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bool ACC (RW, monitor_spells); /* Client wishes to be informed when their spell list changes */ |
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bool ACC (RW, ext_mapinfos); /* If true client accepts additional info on maps */ |
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/* Below are flags for extedend infos to pass to client |
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* with S->C mapextended command */ |
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bool ACC (RW, EMI_smooth); /* Send smooth in extendmapinfos */ |
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bool ACC (RW, smoothing); // trt-style smoothing |
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bool ACC (RW, can_msg); // trt-style text messages |
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|
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bool ACC (RW, force_newmap); // force a newmap before next map update |
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uint32 ACC (RW, supported_readables); /* each bit is a readable supported by client */ |
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uint32 ACC (RW, cs_version), ACC (RW, sc_version); /* versions of the client */ |
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uint16 ACC (RW, look_position); /* start of drawing of look window */ |
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uint16 ACC (RW, mss); // likely tcp maximum segment size |
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uint8 ACC (RW, mapmode); /* Type of map commands the client wants. */ |
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uint8 ACC (RW, mapx), ACC (RW, mapy); /* How large a map the client wants */ |
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uint8 ACC (RW, itemcmd); /* What version of the 'item' protocol command to use */ |
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|
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maptile *ACC (RW, current_map); // CF+ last/current player map |
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region *ACC (RW, current_region); // CF+ last/current player region |
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int ACC (RW, current_x), ACC (RW, current_y); // CF+ last/current map position |
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shstr ACC (RW, version); // CF+ client name/version |
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uint8 ACC (RW, faceset); // CF+ selected faceset |
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|
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tstamp ACC (RW, last_send); // last data send on socket. |
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|
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int ACC (RW, rtt), ACC (RW, rttvar); /* round-trip time and -variance, if known */ |
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|
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int ACC (RW, rate_avail); // current rate balance |
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int ACC (RW, max_rate); // max. # of bytes to send per tick |
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faceidx ACC (RW, scrub_idx); // which face to send next |
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int ACC (RW, bg_scrub); // how many ticks till the next background face send |
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|
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struct ixsend { |
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int16_t pri; // unused |
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faceidx idx; |
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uint32_t ofs; // if != 0, need to send remaining bytes of partial_face |
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}; |
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std::vector<ixsend, slice_allocator<ixsend> > ixface; // which faces to send to the client using ix |
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|
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std::vector<faceidx, slice_allocator<faceidx> > fxface; // which faces to send using fx |
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MTH void flush_fx (); // send fx if required |
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|
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void do_destroy (); |
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void gather_callbacks (AV *&callbacks, event_type event) const; |
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|
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iow socket_ev; void socket_cb (iow &w, int got); |
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iw cmd_ev; void cmd_cb (iw &w); |
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|
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std::deque< command, slice_allocator<command> > cmd_queue; |
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|
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// large structures at the end please |
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struct Map lastmap; |
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std::bitset<MAXANIMNUM> anims_sent; |
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std::bitset<MAX_FACES> faces_sent; |
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|
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// if we get an incomplete packet, this is used to hold the data. |
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// we add 2 byte for the header, one for the trailing 0 byte |
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uint8 inbuf[MAXSOCKBUF + 2 + 1]; |
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|
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enum { MSG_BUF_SIZE = 80, MSG_BUF_COUNT = 10 }; |
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struct msg_buf |
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{ |
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tick_t expire; |
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int len; |
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int count; |
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char msg[MSG_BUF_SIZE]; |
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} msgbuf[MSG_BUF_COUNT]; |
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|
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MTH bool msg_suppressed (const char *msg); |
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|
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bool may_execute (const packet_type *pkt) const; |
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void execute (const packet_type *pkt, char *data, int datalen); |
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|
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void queue_command (packet_type *handler, char *data, int datalen); |
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MTH bool handle_command (); |
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// resets movement state |
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MTH void reset_state (); |
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// resets variable data used to send stat diffs |
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MTH void reset_stats (); |
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|
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MTH bool handle_packet (); |
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int next_packet (); // returns length of packet or 0 |
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void skip_packet (int len); // we have processed the packet, skip it |
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|
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MTH void flush (); |
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MTH void write_outputbuffer (); |
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MTH int outputbuffer_len () const { return outputbuffer.len; } |
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void send (void *buf_, int len); |
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|
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void send_packet (const char *buf); |
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void send_packet (const char *buf, int len); |
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void send_packet_printf (const char *format, ...); |
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void send_packet (packet &sl); |
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|
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void send_drawinfo (const char *msg, int flags = NDI_BLACK); |
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MTH void send_face (faceidx facenum); |
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MTH void send_image (faceidx facenum); |
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MTH void send_faces (object *ob); |
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MTH void send_animation (short anim_num); |
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void send_msg (int color, const char *type, const char *msg); |
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|
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// called when something under the player changes |
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MTH void floorbox_update () { update_look = 1; } |
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// called when the player has been moved |
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MTH void floorbox_reset () { look_position = 0; floorbox_update (); } |
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|
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MTH void tick (); // called every server tick to do housekeeping etc. |
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|
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MTH static client *create (int fd, const char *peername); |
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|
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protected: |
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client (int fd, const char *from_ip); |
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~client (); |
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}; |
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|
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#define CLIENT_SUPPORT_READABLES(__sockPtr,__type)\ |
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( ((__type)>0) &&\ |
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((__sockPtr)->has_readable_type) && \ |
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((__sockPtr)->supported_readables & (1<<(__type))) ) |
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|
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/* Constants in the form EMI_ is for extended map infos. |
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* Even if the client select the additionnal infos it wants |
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* on the map, there may exist cases where this whole info |
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* is not given in one buch but in separate bunches. This |
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* is done performance reasons (imagine some info related to |
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* a visible object and another info related to a 4 square |
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* width and height area). At the begin of an extended info packet |
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* is a bit field. A bit is activated for each extended info |
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* present in the data |
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*/ |
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|
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/* Meanings: |
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* EMI_NOREDRAW Take extended infos into account but don't redraw, |
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* some additionnal datas will follow in a new packet |
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* EMI_SMOOTH Datas about smoothing |
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*/ |
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#define EMI_NOREDRAW 0x01 |
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#define EMI_SMOOTH 0x02 |
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|
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/* this last one says the bitfield continue un next byte |
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* There may be several on contiguous bytes. So there is 7 |
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* actual bits used per byte, and the number of bytes |
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* is not fixed in protocol |
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*/ |
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#define EMI_HASMOREBITS 0x80 |
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|
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#define FACE_TYPES 1 |
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#define PNG_FACE_INDEX 0 |
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|
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#define VERSION_CS 1023 /* version >= 1023 understand setup cmd */ |
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#define VERSION_SC 1026 |
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//#define VERSION_SC 1027 // requestinfo image_info and image_sums, makes extending faces on the fly impossible |
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#define VERSION_INFO "Crossfire TRT Server" |
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|
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typedef object_vector<client, &client::active> sockvec; |
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|
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extern sockvec clients; |
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|
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#define for_all_clients(var) \ |
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for (int _i = 0; _i < clients.size (); ++_i) \ |
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statementvar (client *, var, clients [_i]) |
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|
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#endif |
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|
