d3372da9 |
1 | /* |
2 | * Dolda Connect - Modular multiuser Direct Connect-style client |
3 | * Copyright (C) 2004 Fredrik Tolf (fredrik@dolda2000.com) |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify |
6 | * it under the terms of the GNU General Public License as published by |
7 | * the Free Software Foundation; either version 2 of the License, or |
8 | * (at your option) any later version. |
9 | * |
10 | * This program is distributed in the hope that it will be useful, |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
13 | * GNU General Public License for more details. |
14 | * |
15 | * You should have received a copy of the GNU General Public License |
16 | * along with this program; if not, write to the Free Software |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
18 | */ |
19 | #include <string.h> |
20 | #include <wchar.h> |
21 | #include <sys/socket.h> |
22 | #include <errno.h> |
23 | |
24 | #ifdef HAVE_CONFIG_H |
25 | #include <config.h> |
26 | #endif |
27 | #include "filenet.h" |
28 | #include "search.h" |
29 | #include "module.h" |
30 | #include "utils.h" |
31 | #include "net.h" |
32 | |
33 | static struct fnet *networks = NULL; |
34 | struct fnetnode *fnetnodes = NULL; |
35 | int numfnetnodes = 0; |
36 | GCBCHAIN(newfncb, struct fnetnode *); |
37 | |
38 | static struct fnetnode *newfn(struct fnet *fnet) |
39 | { |
40 | static int curid = 0; |
41 | struct fnetnode *new; |
42 | |
43 | new = smalloc(sizeof(*new)); |
44 | memset(new, 0, sizeof(*new)); |
45 | new->fnet = fnet; |
46 | new->refcount = 1; |
47 | new->id = curid++; |
48 | new->mynick = swcsdup(confgetstr("cli", "defnick")); |
49 | new->srchwait = confgetint("fnet", "srchwait"); |
50 | new->state = FNN_SYN; |
51 | CBCHAININIT(new, fnetnode_ac); |
52 | CBCHAININIT(new, fnetnode_chat); |
53 | CBCHAININIT(new, fnetnode_unlink); |
54 | CBCHAININIT(new, fnetnode_destroy); |
d9c95ea0 |
55 | CBCHAININIT(new, fnetpeer_new); |
56 | CBCHAININIT(new, fnetpeer_del); |
57 | CBCHAININIT(new, fnetpeer_chdi); |
d3372da9 |
58 | new->next = NULL; |
59 | new->prev = NULL; |
60 | numfnetnodes++; |
61 | return(new); |
62 | } |
63 | |
64 | void killfnetnode(struct fnetnode *fn) |
65 | { |
66 | fnetsetstate(fn, FNN_DEAD); |
67 | if(fn->sk != NULL) |
68 | { |
69 | fn->sk->close = 1; |
70 | if(fn->sk->data == fn) |
71 | putfnetnode(fn); |
72 | putsock(fn->sk); |
73 | fn->sk = NULL; |
74 | } |
75 | } |
76 | |
77 | void getfnetnode(struct fnetnode *fn) |
78 | { |
79 | fn->refcount++; |
80 | #ifdef DEBUG |
81 | fprintf(stderr, "getfnetnode on id %i at %p, refcount=%i\n", fn->id, fn, fn->refcount); |
82 | #endif |
83 | } |
84 | |
85 | void putfnetnode(struct fnetnode *fn) |
86 | { |
87 | struct fnetnode *cur; |
88 | |
89 | #ifdef DEBUG |
90 | fprintf(stderr, "putfnetnode on id %i at %p, refcount=%i\n", fn->id, fn, fn->refcount - 1); |
91 | #endif |
92 | if(--fn->refcount) |
93 | return; |
94 | for(cur = fnetnodes; cur != NULL; cur = cur->next) |
95 | { |
96 | if(cur == fn) |
97 | flog(LOG_CRIT, "BUG: fnetnode reached refcount 0 while still in list - id %i", fn->id); |
98 | } |
99 | CBCHAINDOCB(fn, fnetnode_destroy, fn); |
100 | CBCHAINFREE(fn, fnetnode_ac); |
101 | CBCHAINFREE(fn, fnetnode_chat); |
102 | CBCHAINFREE(fn, fnetnode_unlink); |
103 | CBCHAINFREE(fn, fnetnode_destroy); |
d9c95ea0 |
104 | CBCHAINFREE(fn, fnetpeer_new); |
105 | CBCHAINFREE(fn, fnetpeer_del); |
106 | CBCHAINFREE(fn, fnetpeer_chdi); |
d3372da9 |
107 | if(fn->fnet->destroy != NULL) |
108 | fn->fnet->destroy(fn); |
3ea7528f |
109 | while(fn->args != NULL) |
110 | freewcspair(fn->args, &fn->args); |
d3372da9 |
111 | while(fn->peers != NULL) |
112 | fnetdelpeer(fn->peers); |
113 | if(fn->mynick != NULL) |
114 | free(fn->mynick); |
115 | if(fn->name != NULL) |
116 | free(fn->name); |
117 | if(fn->sk != NULL) |
118 | putsock(fn->sk); |
119 | free(fn); |
120 | numfnetnodes--; |
121 | } |
122 | |
123 | struct fnetnode *findfnetnode(int id) |
124 | { |
125 | struct fnetnode *fn; |
126 | |
127 | for(fn = fnetnodes; (fn != NULL) && (fn->id != id); fn = fn->next); |
128 | return(fn); |
129 | } |
130 | |
131 | void linkfnetnode(struct fnetnode *fn) |
132 | { |
133 | if(fn->linked) |
134 | return; |
135 | getfnetnode(fn); |
136 | fn->next = fnetnodes; |
137 | if(fnetnodes != NULL) |
138 | fnetnodes->prev = fn; |
139 | fnetnodes = fn; |
140 | fn->linked = 1; |
141 | GCBCHAINDOCB(newfncb, fn); |
142 | } |
143 | |
144 | void unlinkfnetnode(struct fnetnode *fn) |
145 | { |
146 | if(!fn->linked) |
147 | return; |
148 | if(fnetnodes == fn) |
149 | fnetnodes = fn->next; |
150 | if(fn->next != NULL) |
151 | fn->next->prev = fn->prev; |
152 | if(fn->prev != NULL) |
153 | fn->prev->next = fn->next; |
154 | fn->linked = 0; |
155 | CBCHAINDOCB(fn, fnetnode_unlink, fn); |
156 | putfnetnode(fn); |
157 | } |
158 | |
159 | static void conncb(struct socket *sk, int err, struct fnetnode *data) |
160 | { |
161 | if(err != 0) |
162 | { |
163 | killfnetnode(data); |
164 | putfnetnode(data); |
165 | return; |
166 | } |
167 | data->sk = sk; |
168 | fnetsetstate(data, FNN_HS); |
169 | socksettos(sk, confgetint("fnet", "fntos")); |
170 | data->fnet->connect(data); |
171 | putfnetnode(data); |
172 | } |
173 | |
174 | static void resolvecb(struct sockaddr *addr, int addrlen, struct fnetnode *data) |
175 | { |
176 | if(addr == NULL) |
177 | { |
178 | killfnetnode(data); |
179 | putfnetnode(data); |
180 | } else { |
181 | netcsconn(addr, addrlen, (void (*)(struct socket *, int, void *))conncb, data); |
182 | } |
183 | } |
184 | |
185 | static struct fnetpeerdatum *finddatum(struct fnetnode *fn, wchar_t *id) |
186 | { |
187 | struct fnetpeerdatum *datum; |
188 | |
189 | for(datum = fn->peerdata; datum != NULL; datum = datum->next) |
190 | { |
191 | if(!wcscmp(datum->id, id)) |
192 | break; |
193 | } |
194 | return(datum); |
195 | } |
196 | |
197 | static struct fnetpeerdatum *adddatum(struct fnetnode *fn, wchar_t *id, int datatype) |
198 | { |
199 | struct fnetpeerdatum *new; |
200 | |
201 | new = smalloc(sizeof(*new)); |
202 | new->refcount = 0; |
203 | new->id = swcsdup(id); |
204 | new->datatype = datatype; |
205 | new->prev = NULL; |
206 | new->next = fn->peerdata; |
207 | if(fn->peerdata != NULL) |
208 | fn->peerdata->prev = new; |
209 | fn->peerdata = new; |
210 | return(new); |
211 | } |
212 | |
d9c95ea0 |
213 | static struct fnetpeerdi *difindoradd(struct fnetpeer *peer, struct fnetpeerdatum *datum, int *isnew) |
d3372da9 |
214 | { |
215 | int i; |
216 | |
217 | for(i = 0; i < peer->dinum; i++) |
218 | { |
219 | if(peer->peerdi[i].datum == datum) |
220 | break; |
221 | } |
222 | if(i >= peer->dinum) |
223 | { |
224 | peer->peerdi = srealloc(peer->peerdi, sizeof(struct fnetpeerdi) * (peer->dinum + 1)); |
225 | memset(&peer->peerdi[peer->dinum], 0, sizeof(struct fnetpeerdi)); |
226 | peer->peerdi[peer->dinum].datum = datum; |
227 | datum->refcount++; |
d9c95ea0 |
228 | if(isnew != NULL) |
229 | *isnew = 1; |
d3372da9 |
230 | return(&peer->peerdi[peer->dinum++]); |
231 | } else { |
d9c95ea0 |
232 | if(isnew != NULL) |
233 | *isnew = 0; |
d3372da9 |
234 | return(&peer->peerdi[i]); |
235 | } |
236 | } |
237 | |
238 | void fnetpeersetstr(struct fnetpeer *peer, wchar_t *id, wchar_t *value) |
239 | { |
240 | struct fnetpeerdatum *datum; |
241 | struct fnetpeerdi *di; |
d9c95ea0 |
242 | int changed; |
d3372da9 |
243 | |
244 | if((datum = finddatum(peer->fn, id)) == NULL) |
245 | datum = adddatum(peer->fn, id, FNPD_STR); |
d9c95ea0 |
246 | di = difindoradd(peer, datum, &changed); |
247 | if(di->data.str != NULL) { |
378f34d2 |
248 | changed = (changed || wcscmp(value, di->data.str)); |
d3372da9 |
249 | free(di->data.str); |
d9c95ea0 |
250 | } else { |
251 | changed = 1; |
252 | } |
d3372da9 |
253 | di->data.str = swcsdup(value); |
d9c95ea0 |
254 | if(changed) |
255 | CBCHAINDOCB(peer->fn, fnetpeer_chdi, peer->fn, peer, di); |
d3372da9 |
256 | } |
257 | |
258 | void fnetpeersetnum(struct fnetpeer *peer, wchar_t *id, int value) |
259 | { |
260 | struct fnetpeerdatum *datum; |
261 | struct fnetpeerdi *di; |
d9c95ea0 |
262 | int changed; |
d3372da9 |
263 | |
264 | if((datum = finddatum(peer->fn, id)) == NULL) |
265 | datum = adddatum(peer->fn, id, FNPD_INT); |
d9c95ea0 |
266 | di = difindoradd(peer, datum, &changed); |
267 | changed = (changed || (di->data.num != value)); |
d3372da9 |
268 | di->data.num = value; |
d9c95ea0 |
269 | if(changed) |
270 | CBCHAINDOCB(peer->fn, fnetpeer_chdi, peer->fn, peer, di); |
d3372da9 |
271 | } |
272 | |
273 | void fnetpeersetlnum(struct fnetpeer *peer, wchar_t *id, long long value) |
274 | { |
275 | struct fnetpeerdatum *datum; |
276 | struct fnetpeerdi *di; |
d9c95ea0 |
277 | int changed; |
d3372da9 |
278 | |
279 | if((datum = finddatum(peer->fn, id)) == NULL) |
280 | datum = adddatum(peer->fn, id, FNPD_LL); |
d9c95ea0 |
281 | di = difindoradd(peer, datum, &changed); |
282 | changed = (changed || (di->data.lnum != value)); |
d3372da9 |
283 | di->data.lnum = value; |
d9c95ea0 |
284 | if(changed) |
285 | CBCHAINDOCB(peer->fn, fnetpeer_chdi, peer->fn, peer, di); |
d3372da9 |
286 | } |
287 | |
288 | static void putdatum(struct fnetpeer *peer, struct fnetpeerdatum *datum) |
289 | { |
290 | if(--datum->refcount > 0) |
291 | return; |
292 | if(datum->next != NULL) |
293 | datum->next->prev = datum->prev; |
294 | if(datum->prev != NULL) |
295 | datum->prev->next = datum->next; |
296 | if(datum == peer->fn->peerdata) |
297 | peer->fn->peerdata = datum->next; |
298 | free(datum->id); |
299 | free(datum); |
300 | } |
301 | |
302 | void fnetpeerunset(struct fnetpeer *peer, wchar_t *id) |
303 | { |
304 | int i; |
305 | struct fnetpeerdatum *datum; |
306 | |
307 | if((datum = finddatum(peer->fn, id)) == NULL) |
308 | return; |
309 | for(i = 0; i < peer->dinum; i++) |
310 | { |
311 | if(peer->peerdi[i].datum == datum) |
312 | break; |
313 | } |
314 | if(i >= peer->dinum) |
315 | return; |
316 | if((datum->datatype == FNPD_STR) && (peer->peerdi[i].data.str != NULL)) |
317 | free(peer->peerdi[i].data.str); |
318 | peer->dinum--; |
319 | memmove(&peer->peerdi[i], &peer->peerdi[i + 1], sizeof(struct fnetpeerdi) * (peer->dinum - i)); |
320 | putdatum(peer, datum); |
321 | } |
322 | |
323 | struct fnetpeer *fnetaddpeer(struct fnetnode *fn, wchar_t *id, wchar_t *nick) |
324 | { |
325 | struct fnetpeer *new; |
326 | |
327 | new = smalloc(sizeof(*new)); |
328 | new->fn = fn; |
329 | new->id = swcsdup(id); |
330 | new->nick = swcsdup(nick); |
331 | new->flags.w = 0; |
332 | new->dinum = 0; |
333 | new->peerdi = NULL; |
334 | new->next = fn->peers; |
335 | new->prev = NULL; |
336 | if(fn->peers != NULL) |
337 | fn->peers->prev = new; |
338 | fn->peers = new; |
339 | fn->numpeers++; |
340 | CBCHAINDOCB(fn, fnetnode_ac, fn, L"numpeers"); |
d9c95ea0 |
341 | CBCHAINDOCB(fn, fnetpeer_new, fn, new); |
d3372da9 |
342 | return(new); |
343 | } |
344 | |
345 | void fnetdelpeer(struct fnetpeer *peer) |
346 | { |
347 | int i; |
348 | |
349 | if(peer->next != NULL) |
350 | peer->next->prev = peer->prev; |
351 | if(peer->prev != NULL) |
352 | peer->prev->next = peer->next; |
353 | if(peer->fn->peers == peer) |
354 | peer->fn->peers = peer->next; |
355 | peer->fn->numpeers--; |
356 | CBCHAINDOCB(peer->fn, fnetnode_ac, peer->fn, L"numpeers"); |
d9c95ea0 |
357 | CBCHAINDOCB(peer->fn, fnetpeer_del, peer->fn, peer); |
d3372da9 |
358 | free(peer->id); |
359 | free(peer->nick); |
360 | for(i = 0; i < peer->dinum; i++) |
361 | { |
362 | if((peer->peerdi[i].datum->datatype == FNPD_STR) && (peer->peerdi[i].data.str != NULL)) |
363 | free(peer->peerdi[i].data.str); |
364 | putdatum(peer, peer->peerdi[i].datum); |
365 | } |
366 | if(peer->peerdi != NULL) |
367 | free(peer->peerdi); |
368 | free(peer); |
369 | } |
370 | |
371 | struct fnetpeer *fnetfindpeer(struct fnetnode *fn, wchar_t *id) |
372 | { |
373 | struct fnetpeer *cur; |
374 | |
375 | for(cur = fn->peers; (cur != NULL) && wcscmp(cur->id, id); cur = cur->next); |
376 | return(cur); |
377 | } |
378 | |
379 | int fnetsetnick(struct fnetnode *fn, wchar_t *newnick) |
380 | { |
381 | int ret; |
382 | |
383 | if(fn->fnet->setnick != NULL) |
384 | ret = fn->fnet->setnick(fn, newnick); |
385 | else |
386 | ret = 0; |
387 | if(!ret) |
388 | { |
389 | if(fn->mynick != NULL) |
390 | free(fn->mynick); |
391 | fn->mynick = swcsdup(newnick); |
392 | } |
393 | return(ret); |
394 | } |
395 | |
396 | int fnetsendchat(struct fnetnode *fn, int public, wchar_t *to, wchar_t *string) |
397 | { |
398 | if(fn->fnet->sendchat == NULL) |
399 | { |
400 | errno = ENOTSUP; |
401 | return(-1); |
402 | } |
403 | return(fn->fnet->sendchat(fn, public, to, string)); |
404 | } |
405 | |
406 | int fnetsearch(struct fnetnode *fn, struct search *srch, struct srchfnnlist *ln) |
407 | { |
408 | if(fn->fnet->search == NULL) |
409 | { |
410 | errno = ENOTSUP; |
411 | return(-1); |
412 | } |
413 | return(fn->fnet->search(fn, srch, ln)); |
414 | } |
415 | |
416 | void fnetsetname(struct fnetnode *fn, wchar_t *newname) |
417 | { |
418 | if(fn->name != NULL) |
419 | free(fn->name); |
420 | fn->name = swcsdup(newname); |
421 | CBCHAINDOCB(fn, fnetnode_ac, fn, L"name"); |
422 | } |
423 | |
424 | void fnetsetstate(struct fnetnode *fn, int newstate) |
425 | { |
426 | fn->state = newstate; |
427 | CBCHAINDOCB(fn, fnetnode_ac, fn, L"state"); |
428 | } |
429 | |
430 | struct fnet *findfnet(wchar_t *name) |
431 | { |
432 | struct fnet *fnet; |
433 | |
434 | for(fnet = networks; fnet != NULL; fnet = fnet->next) |
435 | { |
436 | if(!wcscmp(name, fnet->name)) |
437 | break; |
438 | } |
439 | return(fnet); |
440 | } |
441 | |
efc05613 |
442 | struct fnetnode *fnetinitconnect(wchar_t *name, char *addr, struct wcspair *args) |
d3372da9 |
443 | { |
444 | struct fnet *fnet; |
445 | struct fnetnode *fn; |
efc05613 |
446 | struct wcspair *arg; |
d3372da9 |
447 | |
448 | if((fnet = findfnet(name)) == NULL) |
449 | { |
450 | errno = EPROTONOSUPPORT; |
451 | return(NULL); |
452 | } |
453 | fn = newfn(fnet); |
54771774 |
454 | fn->args = args; |
efc05613 |
455 | for(arg = fn->args; arg != NULL; arg = arg->next) |
456 | { |
457 | if(!wcscmp(arg->key, L"nick")) |
458 | fnetsetnick(fn, arg->val); |
459 | } |
d3372da9 |
460 | getfnetnode(fn); |
461 | if(netresolve(addr, (void (*)(struct sockaddr *, int, void *))resolvecb, fn) < 0) |
462 | return(NULL); |
463 | return(fn); |
464 | } |
465 | |
466 | void regfnet(struct fnet *fnet) |
467 | { |
468 | fnet->next = networks; |
469 | networks = fnet; |
470 | } |
471 | |
472 | /* |
473 | * Note on the chat string: Must be in UNIX text file format - that |
474 | * is, LF line endings. The filenet-specific code must see to it that |
475 | * any other kind of format is converted into that. In the future, |
476 | * certain control characters and escape sequences will be parsed by |
477 | * the client. Make sure that any filenet-specific code strips any |
478 | * such that aren't supposed to be in the protocol. |
479 | * |
480 | * Note on "name": This is supposed to be an identifier for the |
481 | * source. If the chat is a public message, set "public" to non-zero |
482 | * and "name" to whatever "chat room" name is appropriate for the |
483 | * fnetnode, but not NULL. If there is a "default" channel in this |
484 | * filenet, set "name" to the empty string. If the chat is a private |
485 | * message, name is ignored. |
486 | */ |
487 | void fnethandlechat(struct fnetnode *fn, int public, wchar_t *name, wchar_t *peer, wchar_t *chat) |
488 | { |
489 | CBCHAINDOCB(fn, fnetnode_chat, fn, public, name, peer, chat); |
490 | } |
491 | |
492 | static struct configvar myvars[] = |
493 | { |
494 | {CONF_VAR_INT, "srchwait", {.num = 15}}, |
495 | {CONF_VAR_INT, "fntos", {.num = 0}}, |
496 | {CONF_VAR_INT, "fnptos", {.num = 0}}, |
497 | {CONF_VAR_END} |
498 | }; |
499 | |
500 | static struct module me = |
501 | { |
502 | .conf = |
503 | { |
504 | .vars = myvars |
505 | }, |
506 | .name = "fnet" |
507 | }; |
508 | |
509 | MODULE(me) |