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41 | #include <sys/time.h> |
41 | #include <sys/time.h> |
42 | #include <sys/socket.h> |
42 | #include <sys/socket.h> |
43 | #include <netinet/in.h> |
43 | #include <netinet/in.h> |
44 | #include <netdb.h> |
44 | #include <netdb.h> |
45 | |
45 | |
46 | #ifdef HAVE_UNISTD_H |
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47 | # include <unistd.h> |
46 | #include <unistd.h> |
48 | #endif |
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49 | |
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50 | #ifdef HAVE_ARPA_INET_H |
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51 | # include <arpa/inet.h> |
47 | #include <arpa/inet.h> |
52 | #endif |
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53 | |
48 | |
54 | #include <loader.h> |
49 | #include <loader.h> |
55 | #include <newserver.h> |
50 | #include <newserver.h> |
56 | |
51 | |
57 | /***************************************************************************** |
52 | /***************************************************************************** |
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65 | * before player joins, and those happen after the player has joined. |
60 | * before player joins, and those happen after the player has joined. |
66 | * As such, we have function types that might be called, so |
61 | * As such, we have function types that might be called, so |
67 | * we end up having 2 tables. |
62 | * we end up having 2 tables. |
68 | */ |
63 | */ |
69 | |
64 | |
70 | typedef void (*func_uint8_int_ns) (char *, int, client_socket *); |
65 | enum { |
71 | |
66 | PF_PLAYER = 0x01, // must have valid player |
72 | struct NsCmdMapping |
67 | PF_IMMEDIATE = 0x02, // TODO: hack, can be executed immediately |
73 | { |
68 | PF_PLAYING = 0x04, // must be in playing state |
74 | const char *cmdname; |
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75 | func_uint8_int_ns cmdproc; |
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76 | uint8 flag; |
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77 | }; |
69 | }; |
78 | |
70 | |
79 | typedef void (*func_uint8_int_pl) (char *, int, player *); |
71 | struct pkt_type |
80 | struct PlCmdMapping |
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81 | { |
72 | { |
82 | const char *cmdname; |
73 | const char *name; |
83 | func_uint8_int_pl cmdproc; |
74 | void *cb; |
84 | uint8 flag; |
75 | int flags; |
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76 | |
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77 | bool may_execute (client_socket *ns) |
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78 | { |
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79 | return (!(flags & PF_PLAYER) || ns->pl) |
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80 | && (!(flags & PF_PLAYING) || (ns->pl && ns->pl->state == ST_PLAYING)); |
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81 | } |
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82 | |
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83 | void execute (client_socket *ns, char *data, int datalen) |
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84 | { |
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85 | //TODO: only one format |
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86 | if (flags & PF_PLAYER) |
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87 | ((void (*)(char *, int, player * ))cb)((char *)data, datalen, ns->pl); |
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88 | else |
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89 | ((void (*)(char *, int, client_socket *))cb)((char *)data, datalen, ns); |
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90 | } |
85 | }; |
91 | }; |
86 | |
92 | |
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93 | // SocketCommand, PlayingCommand, should not exist with those ugly casts |
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94 | #define SC(cb) (void *)static_cast<void (*)(char *, int, client_socket *)>(cb), |
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95 | #define PC(cb) (void *)static_cast<void (*)(char *, int, player *)>(cb), PF_PLAYER | |
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96 | |
87 | /** |
97 | /** |
88 | * Dispatch table for the server. |
98 | * Dispatch table for the server. |
89 | * |
99 | */ |
90 | * CmdMapping is the dispatch table for the server, used in HandleClient, |
100 | static struct pkt_type packets[] = { |
91 | * which gets called when the client has input. All commands called here |
101 | {"ncom", PC(NewPlayerCmd) PF_PLAYING }, |
92 | * use the same parameter form (char* data, int len, int clientnum. |
102 | {"command", PC(PlayerCmd) PF_PLAYING }, |
93 | * We do implicit casts, because the data that is being passed is |
103 | |
94 | * unsigned (pretty much needs to be for binary data), however, most |
104 | {"examine", PC(ExamineCmd) PF_PLAYING | PF_IMMEDIATE }, |
95 | * of these treat it only as strings, so it makes things easier |
105 | {"apply", PC(ApplyCmd) PF_PLAYING | PF_IMMEDIATE }, |
96 | * to cast it here instead of a bunch of times in the function itself. |
106 | {"reply", PC(ReplyCmd) PF_IMMEDIATE }, |
97 | * flag is 1 if the player must be in the playing state to issue the |
107 | {"lookat", PC(LookAt) PF_PLAYING | PF_IMMEDIATE }, |
98 | * command, 0 if they can issue it at any time. |
108 | {"lock", PC(LockItem) PF_PLAYING | PF_IMMEDIATE }, |
99 | */ |
109 | {"mark", PC(MarkItem) PF_PLAYING | PF_IMMEDIATE }, |
100 | static struct PlCmdMapping plcommands[] = { |
110 | {"move", PC(MoveCmd) PF_PLAYING | PF_IMMEDIATE }, |
101 | {"examine", ExamineCmd, 1}, |
111 | {"ext", PC(ExtCmd) PF_IMMEDIATE }, /* CF+ */ |
102 | {"apply", ApplyCmd, 1}, |
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103 | {"move", MoveCmd, 1}, |
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104 | {"reply", ReplyCmd, 0}, |
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105 | {"command", PlayerCmd, 1}, |
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106 | {"ncom", (func_uint8_int_pl) NewPlayerCmd, 1}, |
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107 | {"lookat", LookAt, 1}, |
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108 | {"lock", (func_uint8_int_pl) LockItem, 1}, |
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109 | {"mark", (func_uint8_int_pl) MarkItem, 1}, |
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110 | {"mapredraw", MapRedrawCmd, 0}, /* Added: phil */ |
112 | {"mapredraw", PC(MapRedrawCmd) PF_IMMEDIATE }, /* Added: phil */ |
111 | {"mapinfo", MapInfoCmd, 2}, /* CF+ */ |
113 | {"mapinfo", PC(MapInfoCmd) PF_IMMEDIATE }, /* CF+ */ |
112 | {"ext", ExtCmd, 2}, /* CF+ */ |
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113 | { 0 } /* terminator */ |
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114 | }; |
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115 | |
114 | |
116 | /** Face-related commands */ |
115 | {"addme", SC(AddMeCmd) PF_IMMEDIATE }, |
117 | static struct NsCmdMapping nscommands[] = { |
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118 | {"addme", AddMeCmd, 2}, |
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119 | {"askface", SendFaceCmd}, /* Added: phil */ |
116 | {"askface", SC(SendFaceCmd) 0 }, /* Added: phil */ |
120 | {"requestinfo", RequestInfo}, |
117 | {"requestinfo", SC(RequestInfo) 0 }, |
121 | {"setfacemode", SetFaceMode, 2}, |
118 | {"setfacemode", SC(SetFaceMode) PF_IMMEDIATE }, |
122 | {"setsound", SetSound, 2}, |
119 | {"setsound", SC(SetSound) PF_IMMEDIATE }, |
123 | {"setup", SetUp, 2}, |
120 | {"setup", SC(SetUp) PF_IMMEDIATE }, |
124 | {"version", VersionCmd, 2}, |
121 | {"version", SC(VersionCmd) PF_IMMEDIATE }, |
125 | {"toggleextendedinfos", ToggleExtendedInfos, 2}, /*Added: tchize */ |
122 | {"toggleextendedinfos", SC(ToggleExtendedInfos) PF_IMMEDIATE }, /*Added: tchize */ |
126 | {"toggleextendedtext", ToggleExtendedText, 2}, /*Added: tchize */ |
123 | {"toggleextendedtext", SC(ToggleExtendedText) PF_IMMEDIATE }, /*Added: tchize */ |
127 | {"asksmooth", AskSmooth}, /*Added: tchize (smoothing technologies) */ |
124 | {"asksmooth", SC(AskSmooth) 0 }, /*Added: tchize (smoothing technologies) */ |
128 | { 0 } /* terminator (I, II & III) */ |
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129 | }; |
125 | }; |
130 | |
126 | |
131 | /** |
127 | /** |
132 | * RequestInfo is sort of a meta command. There is some specific |
128 | * RequestInfo is sort of a meta command. There is some specific |
133 | * request of information, but we call other functions to provide |
129 | * request of information, but we call other functions to provide |
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227 | datalen = 0; |
223 | datalen = 0; |
228 | } |
224 | } |
229 | |
225 | |
230 | ns->inbuf [pkt_len] = 0; /* Terminate buffer - useful for string data */ |
226 | ns->inbuf [pkt_len] = 0; /* Terminate buffer - useful for string data */ |
231 | |
227 | |
232 | for (int i = 0; nscommands[i].cmdname; i++) |
228 | for (pkt_type *pkt = packets; pkt < packets + (sizeof (packets) / sizeof (packets[0])); ++pkt) |
233 | { |
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234 | if (!strcmp ((char *)ns->inbuf + 2, nscommands[i].cmdname)) |
229 | if (!strcmp ((char *)ns->inbuf + 2, pkt->name)) |
235 | { |
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236 | nscommands[i].cmdproc (data, datalen, ns); |
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237 | ns->skip_packet (pkt_len); |
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238 | //D// not doing this causes random memory corruption |
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239 | if (nscommands[i].flag & 2) |
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240 | goto next_packet; |
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241 | return; |
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242 | } |
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243 | } |
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244 | |
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245 | /* Player must be in the playing state or the flag on the |
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246 | * the command must be zero for the user to use the command - |
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247 | * otherwise, a player cam save, be in the play_again state, and |
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248 | * the map they were on gets swapped out, yet things that try to look |
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249 | * at the map causes a crash. If the command is valid, but |
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250 | * one they can't use, we still swallow it up. |
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251 | */ |
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252 | if (pl) |
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253 | for (int i = 0; plcommands[i].cmdname; i++) |
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254 | { |
230 | { |
255 | if (!strcmp ((char *)ns->inbuf + 2, plcommands[i].cmdname)) |
231 | if (pkt->may_execute (ns)) |
256 | { |
232 | { |
257 | if (pl->state == ST_PLAYING || !(plcommands[i].flag & 1)) |
233 | pkt->execute (ns, data, datalen); |
258 | plcommands[i].cmdproc ((char *) data, datalen, pl); |
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259 | |
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260 | ns->skip_packet (pkt_len); |
234 | ns->skip_packet (pkt_len); |
261 | //D// not doing this causes random memory corruption |
235 | //D//TODO not doing this causes random memory corruption |
262 | if (plcommands[i].flag & 2) |
236 | if (pkt->flags & PF_IMMEDIATE) |
263 | goto next_packet; |
237 | goto next_packet; |
264 | |
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265 | return; |
238 | return; |
266 | } |
239 | } |
267 | } |
240 | } |
268 | |
241 | |
269 | /* If we get here, we didn't find a valid command. Logging |
242 | /* If we get here, we didn't find a valid command. Logging |
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275 | next_packet: |
248 | next_packet: |
276 | ; |
249 | ; |
277 | } |
250 | } |
278 | } |
251 | } |
279 | |
252 | |
280 | |
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281 | /***************************************************************************** |
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282 | * |
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283 | * Low level socket looping - select calls and watchdog udp packet |
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284 | * sending. |
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285 | * |
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286 | ******************************************************************************/ |
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287 | |
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288 | #ifdef WATCHDOG |
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289 | |
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290 | /** |
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291 | * Tell watchdog that we are still alive |
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292 | * |
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293 | * I put the function here since we should hopefully already be getting |
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294 | * all the needed include files for socket support |
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295 | */ |
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296 | |
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297 | void |
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298 | watchdog (void) |
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299 | { |
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300 | static int fd = -1; |
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301 | static struct sockaddr_in insock; |
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302 | |
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303 | if (fd == -1) |
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304 | { |
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305 | struct protoent *protoent; |
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306 | |
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307 | if ((protoent = getprotobyname ("udp")) == NULL || (fd = socket (PF_INET, SOCK_DGRAM, protoent->p_proto)) == -1) |
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308 | { |
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309 | return; |
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310 | } |
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311 | insock.sin_family = AF_INET; |
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312 | insock.sin_port = htons ((unsigned short) 13325); |
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313 | insock.sin_addr.s_addr = inet_addr ("127.0.0.1"); |
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314 | } |
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315 | sendto (fd, (void *) &fd, 1, 0, (struct sockaddr *) &insock, sizeof (insock)); |
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316 | } |
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317 | #endif |
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318 | |
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319 | void |
253 | void |
320 | flush_sockets (void) |
254 | flush_sockets (void) |
321 | { |
255 | { |
322 | player *pl; |
256 | for (sockvec::iterator i = client_sockets.begin (); i != client_sockets.end (); ++i) |
323 | |
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324 | for (pl = first_player; pl != NULL; pl = pl->next) |
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325 | if (pl->socket->status != Ns_Dead) |
257 | if ((*i)->status != Ns_Dead) |
326 | Socket_Flush (pl->socket); |
258 | (*i)->flush (); |
327 | } |
259 | } |
328 | |
260 | |
329 | /** |
261 | /** |
330 | * This checks the sockets for input, does the right thing. |
262 | * This checks the sockets for input, does the right thing. |
331 | * |
263 | * |
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335 | */ |
267 | */ |
336 | void |
268 | void |
337 | doeric_server (void) |
269 | doeric_server (void) |
338 | { |
270 | { |
339 | int i, pollret; |
271 | int i, pollret; |
340 | fd_set tmp_read, tmp_write; |
272 | fd_set tmp_read; |
341 | struct sockaddr_in addr; |
273 | struct sockaddr_in addr; |
342 | socklen_t addrlen = sizeof (struct sockaddr); |
274 | socklen_t addrlen = sizeof (struct sockaddr); |
343 | player *pl, *next; |
275 | player *pl, *next; |
344 | int maxfd = 0; |
276 | int maxfd = 0; |
345 | |
277 | |
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373 | |
305 | |
374 | pl = npl; |
306 | pl = npl; |
375 | } |
307 | } |
376 | |
308 | |
377 | FD_ZERO (&tmp_read); |
309 | FD_ZERO (&tmp_read); |
378 | FD_ZERO (&tmp_write); |
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379 | |
310 | |
380 | for (sockvec::iterator i = client_sockets.begin (); i != client_sockets.end (); ) |
311 | for (sockvec::iterator i = client_sockets.begin (); i != client_sockets.end (); ) |
381 | { |
312 | { |
382 | client_socket *s = *i; |
313 | client_socket *s = *i; |
383 | |
314 | |
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390 | { |
321 | { |
391 | if (s->fd > maxfd) maxfd = s->fd; |
322 | if (s->fd > maxfd) maxfd = s->fd; |
392 | |
323 | |
393 | FD_SET (s->fd, &tmp_read); |
324 | FD_SET (s->fd, &tmp_read); |
394 | |
325 | |
395 | if (s->outputbuffer.len) |
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396 | FD_SET (s->fd, &tmp_write); |
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397 | |
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398 | ++i; |
326 | ++i; |
399 | } |
327 | } |
400 | } |
328 | } |
401 | |
329 | |
402 | struct timeval timeout; |
330 | struct timeval timeout; |
403 | |
331 | |
404 | timeout.tv_sec = 0; |
332 | timeout.tv_sec = 0; |
405 | timeout.tv_usec = 0; |
333 | timeout.tv_usec = 0; |
406 | |
334 | |
407 | pollret = select (maxfd + 1, |
335 | pollret = select (maxfd + 1, |
408 | &tmp_read, &tmp_write, 0, |
336 | &tmp_read, 0, 0, |
409 | &timeout); |
337 | &timeout); |
410 | |
338 | |
411 | if (pollret == -1) |
339 | if (pollret == -1) |
412 | { |
340 | { |
413 | LOG (llevError, "select failed: %s\n", strerror (errno)); |
341 | LOG (llevError, "select failed: %s\n", strerror (errno)); |
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419 | /* Check for any input on the sockets */ |
347 | /* Check for any input on the sockets */ |
420 | for (sockvec::iterator i = client_sockets.begin (); i != client_sockets.end (); ++i) |
348 | for (sockvec::iterator i = client_sockets.begin (); i != client_sockets.end (); ++i) |
421 | { |
349 | { |
422 | client_socket *s = *i; |
350 | client_socket *s = *i; |
423 | player *pl = s->pl; |
351 | player *pl = s->pl; |
424 | |
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425 | //TODO: writing should be independent of tick |
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426 | if (FD_ISSET (s->fd, &tmp_write)) |
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427 | { |
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428 | s->can_write = 1; |
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429 | write_socket_buffer (s); |
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430 | } |
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431 | |
352 | |
432 | //TODO: disassociate handleclient from socket readin |
353 | //TODO: disassociate handleclient from socket readin |
433 | if (s->inbuf_len || FD_ISSET (s->fd, &tmp_read)) |
354 | if (s->inbuf_len || FD_ISSET (s->fd, &tmp_read)) |
434 | HandleClient (s, pl); |
355 | HandleClient (s, pl); |
435 | |
356 | |