| 1 |
/* |
| 2 |
* This file is part of Deliantra, the Roguelike Realtime MMORPG. |
| 3 |
* |
| 4 |
* Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
| 5 |
* Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team |
| 6 |
* Copyright (©) 1992,2007 Frank Tore Johansen |
| 7 |
* |
| 8 |
* Deliantra is free software: you can redistribute it and/or modify it under |
| 9 |
* the terms of the Affero GNU General Public License as published by the |
| 10 |
* Free Software Foundation, either version 3 of the License, or (at your |
| 11 |
* option) any later version. |
| 12 |
* |
| 13 |
* This program is distributed in the hope that it will be useful, |
| 14 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 |
* GNU General Public License for more details. |
| 17 |
* |
| 18 |
* You should have received a copy of the Affero GNU General Public License |
| 19 |
* and the GNU General Public License along with this program. If not, see |
| 20 |
* <http://www.gnu.org/licenses/>. |
| 21 |
* |
| 22 |
* The authors can be reached via e-mail to <support@deliantra.net> |
| 23 |
*/ |
| 24 |
|
| 25 |
#ifndef CLIENT_H |
| 26 |
#define CLIENT_H |
| 27 |
|
| 28 |
#include <deque> |
| 29 |
#include <bitset> |
| 30 |
#include <tr1/unordered_set> |
| 31 |
|
| 32 |
#if HAVE_TCP_INFO |
| 33 |
# include <netinet/tcp.h> |
| 34 |
#else |
| 35 |
struct tcp_info { |
| 36 |
// dummy |
| 37 |
int tcpi_state; |
| 38 |
int tcpi_ca_state; |
| 39 |
int tcpi_retransmits; |
| 40 |
int tcpi_probes; |
| 41 |
int tcpi_backoff; |
| 42 |
int tcpi_options; |
| 43 |
int tcpi_snd_wscale; |
| 44 |
int tcpi_rcv_wscale; |
| 45 |
int tcpi_rto; |
| 46 |
int tcpi_ato; |
| 47 |
int tcpi_snd_mss; |
| 48 |
int tcpi_rcv_mss; |
| 49 |
int tcpi_unacked; |
| 50 |
int tcpi_sacked; |
| 51 |
int tcpi_lost; |
| 52 |
int tcpi_retrans; |
| 53 |
int tcpi_fackets; |
| 54 |
int tcpi_last_data_sent; |
| 55 |
int tcpi_last_ack_sent; |
| 56 |
int tcpi_last_data_recv; |
| 57 |
int tcpi_last_ack_recv; |
| 58 |
int tcpi_pmtu; |
| 59 |
int tcpi_rcv_ssthresh; |
| 60 |
int tcpi_rtt; |
| 61 |
int tcpi_rttvar; |
| 62 |
int tcpi_snd_ssthresh; |
| 63 |
int tcpi_snd_cwnd; |
| 64 |
int tcpi_advmss; |
| 65 |
int tcpi_reordering; |
| 66 |
}; |
| 67 |
#endif |
| 68 |
|
| 69 |
// (possibly) max. number of objects "per page" in the ground container |
| 70 |
#define FLOORBOX_PAGESIZE 50 |
| 71 |
|
| 72 |
struct MapCell |
| 73 |
{ |
| 74 |
tag_t player; // this is, unfortunately, very wasteful of memory space, but pretty bandwidth-efficient |
| 75 |
int count; /* This is really darkness in the map1 command */ |
| 76 |
faceidx faces[MAP_LAYERS]; |
| 77 |
unsigned char stat_hp; // health of something in this space, or 0 |
| 78 |
unsigned char flags; |
| 79 |
uint8_t smooth[MAP_LAYERS]; |
| 80 |
}; |
| 81 |
|
| 82 |
#define MAX_CLIENT_X MAP_CLIENT_X |
| 83 |
#define MAX_CLIENT_Y MAP_CLIENT_Y |
| 84 |
|
| 85 |
struct Map |
| 86 |
{ |
| 87 |
struct MapCell cells[MAX_CLIENT_X][MAX_CLIENT_Y]; |
| 88 |
}; |
| 89 |
|
| 90 |
/* True max is 16383 given current map compaction method */ |
| 91 |
#define MAXANIMNUM 10000 |
| 92 |
|
| 93 |
struct statsinfo |
| 94 |
{ |
| 95 |
char *range, *title; |
| 96 |
}; |
| 97 |
|
| 98 |
/* This contains basic information on the socket structure. status is its |
| 99 |
* current state. we set up our on buffers for sending/receiving, so we can |
| 100 |
* handle some higher level functions. fd is the actual file descriptor we |
| 101 |
* are using. |
| 102 |
*/ |
| 103 |
|
| 104 |
/* Only one map mode can actually be used, so lets make it a switch |
| 105 |
* instead of having a bunch of different fields that needed to |
| 106 |
* get toggled. |
| 107 |
*/ |
| 108 |
enum { Map0Cmd = 0, Map1Cmd = 1, Map1aCmd = 2 }; |
| 109 |
|
| 110 |
// states the socket can be in |
| 111 |
enum { |
| 112 |
ST_DEAD, // socket is dead |
| 113 |
ST_SETUP, // initial handshake / setup / login |
| 114 |
ST_PLAYING, // logged in an playing |
| 115 |
ST_CUSTOM, // waiting for custom reply |
| 116 |
|
| 117 |
ST_GET_PARTY_PASSWORD, |
| 118 |
}; |
| 119 |
|
| 120 |
// a handler for a specific type of packet |
| 121 |
enum { |
| 122 |
PF_PLAYER = 0x01, // must have valid player / will by synchronised |
| 123 |
PF_PLAYING = 0x02, // must be in playing state |
| 124 |
PF_COMMAND0 = 0x04, // command starts at offset 0 |
| 125 |
PF_COMMAND6 = 0x08, // command starts at offset 6 |
| 126 |
}; |
| 127 |
|
| 128 |
// face type.s bit 0 means "has meta info prepended" |
| 129 |
enum { |
| 130 |
FT_FACE = 0 * 2 + 0, // faces (images) |
| 131 |
FT_MUSIC = 1 * 2 + 1, // background music |
| 132 |
FT_SOUND = 2 * 2 + 1, // effects |
| 133 |
FT_RSRC = 3 * 2 + 0, // generic data files |
| 134 |
FT_NUM, |
| 135 |
}; |
| 136 |
|
| 137 |
struct packet_type |
| 138 |
{ |
| 139 |
const char *name; |
| 140 |
void *cb; |
| 141 |
int flags; |
| 142 |
}; |
| 143 |
|
| 144 |
struct command |
| 145 |
{ |
| 146 |
tstamp stamp; |
| 147 |
const packet_type *handler; |
| 148 |
char *data; |
| 149 |
int datalen; |
| 150 |
}; |
| 151 |
|
| 152 |
/* how many times we are allowed to give the wrong password before being kicked. */ |
| 153 |
#define MAX_PASSWORD_FAILURES 5 |
| 154 |
|
| 155 |
INTERFACE_CLASS (client) // should become player when newsocket is a baseclass of player |
| 156 |
struct client : zero_initialised, attachable |
| 157 |
{ |
| 158 |
int ACC (RW, fd); |
| 159 |
unsigned int inbuf_len; // number of bytes valid in inbuf |
| 160 |
statsinfo stats; |
| 161 |
object_vector_index ACC (RO, active); |
| 162 |
player_ptr ACC (RO, pl); |
| 163 |
|
| 164 |
char *ACC (RW, host); /* Which host it is connected from (ip address) */ |
| 165 |
uint8 ACC (RW, state); /* Input state of the player (name, password, etc */ |
| 166 |
|
| 167 |
sint8 ACC (RW, last_level); /* Last level we sent to client */ |
| 168 |
uint16 ACC (RW, last_flags); /* fire/run on flags for last tick */ |
| 169 |
float ACC (RW, last_weapon_sp); /* if diff than weapon_sp, update client */ |
| 170 |
sint32 ACC (RW, last_weight); /* Last weight as sent to client; -1 means do not send weight */ |
| 171 |
sint32 ACC (RW, last_weight_limit); /* Last weight limit transmitted to client */ |
| 172 |
uint32 ACC (RW, last_path_attuned); /* Last spell attunment sent to client */ |
| 173 |
uint32 ACC (RW, last_path_repelled); /* Last spell repelled sent to client */ |
| 174 |
uint32 ACC (RW, last_path_denied); /* Last spell denied sent to client */ |
| 175 |
living ACC (RO, last_stats); /* Last stats as sent to client */ |
| 176 |
float ACC (RW, last_speed); /* Last speed as sent to client */ |
| 177 |
sint16 ACC (RW, last_resist[NROFATTACKS]);/* last resist values sent to client */ |
| 178 |
sint64 ACC (RW, last_skill_exp[NUM_SKILLS]);/* shadow register. if != exp. obj update client */ |
| 179 |
|
| 180 |
bool ACC (RW, afk); /* player is afk */ |
| 181 |
bool ACC (RW, sent_scroll); |
| 182 |
bool ACC (RW, sound); /* does the client want sound */ |
| 183 |
bool ACC (RW, newmapcmd); /* Send newmap command when entering new map SMACFIGGEN */ |
| 184 |
bool ACC (RW, plugincmd); // extend the protocol through a plug-in */ |
| 185 |
bool ACC (RW, mapinfocmd); // return map info and send map change info |
| 186 |
uint8_t ACC (RW, extcmd); // call into extensions/plugins |
| 187 |
bool ACC (RW, update_look); /* If true, we need to send the look window */ |
| 188 |
bool ACC (RW, has_readable_type); /* If true client accept additional text information */ |
| 189 |
/* used to arrange text in books, scrolls, or scripted dialogs */ |
| 190 |
bool ACC (RW, monitor_spells); /* Client wishes to be informed when their spell list changes */ |
| 191 |
bool ACC (RW, smoothing); // deliantra-style smoothing |
| 192 |
|
| 193 |
bool ACC (RW, force_newmap); // force a newmap before next map update |
| 194 |
uint32 ACC (RW, supported_readables); /* each bit is a readable supported by client */ |
| 195 |
uint32 ACC (RW, cs_version), ACC (RW, sc_version); /* versions of the client */ |
| 196 |
uint16 ACC (RW, look_position); /* start of drawing of look window */ |
| 197 |
uint16 ACC (RW, mss); // likely tcp maximum segment size |
| 198 |
uint8 ACC (RW, mapmode); /* Type of map commands the client wants. */ |
| 199 |
uint8 ACC (RW, mapx), ACC (RW, mapy); /* How large a map the client wants */ |
| 200 |
uint8 ACC (RW, itemcmd); /* What version of the 'item' protocol command to use */ |
| 201 |
|
| 202 |
maptile_ptr ACC (RW, current_map); // CF+ last/current player map |
| 203 |
region_ptr ACC (RW, current_region); // CF+ last/current player region |
| 204 |
int ACC (RW, current_x), ACC (RW, current_y); // CF+ last/current map position |
| 205 |
shstr ACC (RW, version); // CF+ client name/version |
| 206 |
uint8 ACC (RW, faceset); // CF+ selected faceset |
| 207 |
|
| 208 |
tstamp ACC (RW, last_send); // last data send on socket. |
| 209 |
|
| 210 |
float ACC (RW, socket_timeout); /* after how many seconds of no ack do we declare dead */ |
| 211 |
int ACC (RW, rate_avail); // current rate balance |
| 212 |
int ACC (RW, max_rate); // max. # of bytes to send per tick |
| 213 |
faceidx ACC (RW, scrub_idx); // which face to send next |
| 214 |
int ACC (RW, bg_scrub); // how many ticks till the next background face send |
| 215 |
|
| 216 |
struct tcp_info tcpi; |
| 217 |
tstamp next_rate_adjust; |
| 218 |
|
| 219 |
unordered_vector<char *> mapinfo_queue; |
| 220 |
void mapinfo_queue_clear (); |
| 221 |
void mapinfo_queue_run (); |
| 222 |
bool mapinfo_try (char *buf); |
| 223 |
|
| 224 |
struct ixsend { |
| 225 |
int16_t pri; // unused |
| 226 |
faceidx idx; |
| 227 |
uint32_t ofs; // if != 0, need to send remaining bytes of partial_face |
| 228 |
}; |
| 229 |
std::vector<ixsend, slice_allocator<ixsend> > ixface; // which faces to send to the client using ix |
| 230 |
|
| 231 |
std::vector<faceidx, slice_allocator<faceidx> > fxface; // which faces to send using fx |
| 232 |
MTH void flush_fx (); // send fx if required |
| 233 |
|
| 234 |
void do_destroy (); |
| 235 |
void gather_callbacks (AV *&callbacks, event_type event) const; |
| 236 |
|
| 237 |
iow socket_ev; void socket_cb (iow &w, int revents); |
| 238 |
|
| 239 |
std::deque< command, slice_allocator<command> > cmd_queue; |
| 240 |
|
| 241 |
// large structures at the end please |
| 242 |
struct Map lastmap; |
| 243 |
std::bitset<MAXANIMNUM> anims_sent; |
| 244 |
std::bitset<MAX_FACES> faces_sent; |
| 245 |
std::bitset<FT_NUM> fx_want; |
| 246 |
|
| 247 |
// if we get an incomplete packet, this is used to hold the data. |
| 248 |
// we add 2 byte for the header, one for the trailing 0 byte |
| 249 |
uint8 inbuf[MAXSOCKBUF + 2 + 1]; |
| 250 |
|
| 251 |
enum { MSG_BUF_SIZE = 80, MSG_BUF_COUNT = 10 }; |
| 252 |
struct msg_buf |
| 253 |
{ |
| 254 |
tick_t expire; |
| 255 |
int len; |
| 256 |
int count; |
| 257 |
char msg[MSG_BUF_SIZE]; |
| 258 |
} msgbuf[MSG_BUF_COUNT]; |
| 259 |
|
| 260 |
MTH bool msg_suppressed (const char *msg); |
| 261 |
|
| 262 |
/* The following is the setup for a ring buffer for storing output |
| 263 |
* data that the OS can't handle right away. |
| 264 |
* TODO: this member is enourmously large - optimise? |
| 265 |
*/ |
| 266 |
struct |
| 267 |
{ |
| 268 |
char data[SOCKETBUFSIZE]; |
| 269 |
int start; |
| 270 |
int len; |
| 271 |
} outputbuffer; |
| 272 |
|
| 273 |
bool may_execute (const packet_type *pkt) const; |
| 274 |
void execute (const packet_type *pkt, char *data, int datalen); |
| 275 |
|
| 276 |
void queue_command (packet_type *handler, char *data, int datalen); |
| 277 |
MTH bool handle_command (); |
| 278 |
// resets movement state |
| 279 |
MTH void reset_state (); |
| 280 |
// resets variable data used to send stat diffs |
| 281 |
MTH void reset_stats (); |
| 282 |
|
| 283 |
MTH bool handle_packet (); |
| 284 |
int next_packet (); // returns length of packet or 0 |
| 285 |
void skip_packet (int len); // we have processed the packet, skip it |
| 286 |
|
| 287 |
MTH void flush (); |
| 288 |
MTH void write_outputbuffer (); |
| 289 |
MTH int outputbuffer_len () const { return outputbuffer.len; } |
| 290 |
void send (void *buf_, int len); |
| 291 |
|
| 292 |
void send_packet (const char *buf); |
| 293 |
void send_packet (const char *buf, int len); |
| 294 |
void send_packet_printf (const char *format, ...); |
| 295 |
void send_packet (packet &sl); |
| 296 |
|
| 297 |
void send_drawinfo (const char *msg, int flags = NDI_BLACK); |
| 298 |
|
| 299 |
MTH void send_face (faceidx facenum, int pri = 0); |
| 300 |
MTH void send_faces (object *ob); |
| 301 |
MTH void send_animation (short anim_num); |
| 302 |
void send_msg (int color, const char *type, const char *msg); |
| 303 |
|
| 304 |
MTH void play_sound (faceidx sound, int dx = 0, int dy = 0); |
| 305 |
// called when something under the player changes |
| 306 |
MTH void floorbox_update () { update_look = 1; } |
| 307 |
// called when the player has been moved |
| 308 |
MTH void floorbox_reset () { look_position = 0; floorbox_update (); } |
| 309 |
|
| 310 |
MTH void tick (); // called every server tick to do housekeeping etc. |
| 311 |
|
| 312 |
MTH static client *create (int fd, const char *peername); |
| 313 |
MTH static void clock (); |
| 314 |
MTH static void flush_sockets (); |
| 315 |
|
| 316 |
protected: |
| 317 |
client (int fd, const char *from_ip); |
| 318 |
~client (); |
| 319 |
}; |
| 320 |
|
| 321 |
#if FOR_PERL |
| 322 |
ACC (RW, tcpi.tcpi_state); |
| 323 |
ACC (RW, tcpi.tcpi_ca_state); |
| 324 |
ACC (RW, tcpi.tcpi_retransmits); |
| 325 |
ACC (RW, tcpi.tcpi_probes); |
| 326 |
ACC (RW, tcpi.tcpi_backoff); |
| 327 |
ACC (RW, tcpi.tcpi_options); |
| 328 |
ACC (RO, tcpi.tcpi_snd_wscale); |
| 329 |
ACC (RO, tcpi.tcpi_rcv_wscale); |
| 330 |
ACC (RW, tcpi.tcpi_rto); |
| 331 |
ACC (RW, tcpi.tcpi_ato); |
| 332 |
ACC (RW, tcpi.tcpi_snd_mss); |
| 333 |
ACC (RW, tcpi.tcpi_rcv_mss); |
| 334 |
ACC (RW, tcpi.tcpi_unacked); |
| 335 |
ACC (RW, tcpi.tcpi_sacked); |
| 336 |
ACC (RW, tcpi.tcpi_lost); |
| 337 |
ACC (RW, tcpi.tcpi_retrans); |
| 338 |
ACC (RW, tcpi.tcpi_fackets); |
| 339 |
ACC (RW, tcpi.tcpi_last_data_sent); |
| 340 |
ACC (RW, tcpi.tcpi_last_ack_sent); |
| 341 |
ACC (RW, tcpi.tcpi_last_data_recv); |
| 342 |
ACC (RW, tcpi.tcpi_last_ack_recv); |
| 343 |
ACC (RW, tcpi.tcpi_pmtu); |
| 344 |
ACC (RW, tcpi.tcpi_rcv_ssthresh); |
| 345 |
ACC (RW, tcpi.tcpi_rtt); |
| 346 |
ACC (RW, tcpi.tcpi_rttvar); |
| 347 |
ACC (RW, tcpi.tcpi_snd_ssthresh); |
| 348 |
ACC (RW, tcpi.tcpi_snd_cwnd); |
| 349 |
ACC (RW, tcpi.tcpi_advmss); |
| 350 |
ACC (RW, tcpi.tcpi_reordering); |
| 351 |
#endif |
| 352 |
|
| 353 |
#define CLIENT_SUPPORT_READABLES(__sockPtr,__type)\ |
| 354 |
( ((__type)>0) &&\ |
| 355 |
((__sockPtr)->has_readable_type) && \ |
| 356 |
((__sockPtr)->supported_readables & (1<<(__type))) ) |
| 357 |
|
| 358 |
#define FACE_TYPES 1 |
| 359 |
#define PNG_FACE_INDEX 0 |
| 360 |
|
| 361 |
#define VERSION_CS 1023 /* version >= 1023 understand setup cmd */ |
| 362 |
#define VERSION_SC 1026 |
| 363 |
//#define VERSION_SC 1027 // requestinfo image_info and image_sums, makes extending faces on the fly impossible |
| 364 |
#define VERSION_INFO "Deliantra Server" |
| 365 |
|
| 366 |
typedef object_vector<client, &client::active> sockvec; |
| 367 |
|
| 368 |
extern sockvec clients; |
| 369 |
|
| 370 |
#define for_all_clients(var) \ |
| 371 |
for (int _i = 0; _i < clients.size (); ++_i) \ |
| 372 |
statementvar (client *, var, clients [_i]) |
| 373 |
|
| 374 |
// returns true when the message needs special (read: perl) treatment |
| 375 |
static inline bool |
| 376 |
msg_is_special (const char *msg, bool nl_special = true) |
| 377 |
{ |
| 378 |
return msg [strcspn (msg, nl_special ? "<&\n" : "<&")]; |
| 379 |
} |
| 380 |
|
| 381 |
#endif |
| 382 |
|
