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) |
d68b4c9a |
71 | { |
72 | fn->sk->data = NULL; |
d3372da9 |
73 | putfnetnode(fn); |
d68b4c9a |
74 | } |
d3372da9 |
75 | putsock(fn->sk); |
76 | fn->sk = NULL; |
77 | } |
78 | } |
79 | |
80 | void getfnetnode(struct fnetnode *fn) |
81 | { |
82 | fn->refcount++; |
83 | #ifdef DEBUG |
84 | fprintf(stderr, "getfnetnode on id %i at %p, refcount=%i\n", fn->id, fn, fn->refcount); |
85 | #endif |
86 | } |
87 | |
88 | void putfnetnode(struct fnetnode *fn) |
89 | { |
90 | struct fnetnode *cur; |
91 | |
92 | #ifdef DEBUG |
93 | fprintf(stderr, "putfnetnode on id %i at %p, refcount=%i\n", fn->id, fn, fn->refcount - 1); |
94 | #endif |
95 | if(--fn->refcount) |
96 | return; |
97 | for(cur = fnetnodes; cur != NULL; cur = cur->next) |
98 | { |
99 | if(cur == fn) |
100 | flog(LOG_CRIT, "BUG: fnetnode reached refcount 0 while still in list - id %i", fn->id); |
101 | } |
102 | CBCHAINDOCB(fn, fnetnode_destroy, fn); |
103 | CBCHAINFREE(fn, fnetnode_ac); |
104 | CBCHAINFREE(fn, fnetnode_chat); |
105 | CBCHAINFREE(fn, fnetnode_unlink); |
106 | CBCHAINFREE(fn, fnetnode_destroy); |
d9c95ea0 |
107 | CBCHAINFREE(fn, fnetpeer_new); |
108 | CBCHAINFREE(fn, fnetpeer_del); |
109 | CBCHAINFREE(fn, fnetpeer_chdi); |
d3372da9 |
110 | if(fn->fnet->destroy != NULL) |
111 | fn->fnet->destroy(fn); |
3ea7528f |
112 | while(fn->args != NULL) |
113 | freewcspair(fn->args, &fn->args); |
d3372da9 |
114 | while(fn->peers != NULL) |
115 | fnetdelpeer(fn->peers); |
116 | if(fn->mynick != NULL) |
117 | free(fn->mynick); |
d1e8b9fd |
118 | if(fn->pubid != NULL) |
119 | free(fn->pubid); |
d3372da9 |
120 | if(fn->name != NULL) |
121 | free(fn->name); |
122 | if(fn->sk != NULL) |
123 | putsock(fn->sk); |
124 | free(fn); |
125 | numfnetnodes--; |
126 | } |
127 | |
128 | struct fnetnode *findfnetnode(int id) |
129 | { |
130 | struct fnetnode *fn; |
131 | |
132 | for(fn = fnetnodes; (fn != NULL) && (fn->id != id); fn = fn->next); |
133 | return(fn); |
134 | } |
135 | |
136 | void linkfnetnode(struct fnetnode *fn) |
137 | { |
138 | if(fn->linked) |
139 | return; |
140 | getfnetnode(fn); |
141 | fn->next = fnetnodes; |
142 | if(fnetnodes != NULL) |
143 | fnetnodes->prev = fn; |
144 | fnetnodes = fn; |
145 | fn->linked = 1; |
146 | GCBCHAINDOCB(newfncb, fn); |
147 | } |
148 | |
149 | void unlinkfnetnode(struct fnetnode *fn) |
150 | { |
151 | if(!fn->linked) |
152 | return; |
153 | if(fnetnodes == fn) |
154 | fnetnodes = fn->next; |
155 | if(fn->next != NULL) |
156 | fn->next->prev = fn->prev; |
157 | if(fn->prev != NULL) |
158 | fn->prev->next = fn->next; |
159 | fn->linked = 0; |
160 | CBCHAINDOCB(fn, fnetnode_unlink, fn); |
161 | putfnetnode(fn); |
162 | } |
163 | |
164 | static void conncb(struct socket *sk, int err, struct fnetnode *data) |
165 | { |
166 | if(err != 0) |
167 | { |
168 | killfnetnode(data); |
169 | putfnetnode(data); |
170 | return; |
171 | } |
172 | data->sk = sk; |
173 | fnetsetstate(data, FNN_HS); |
174 | socksettos(sk, confgetint("fnet", "fntos")); |
175 | data->fnet->connect(data); |
176 | putfnetnode(data); |
177 | } |
178 | |
179 | static void resolvecb(struct sockaddr *addr, int addrlen, struct fnetnode *data) |
180 | { |
181 | if(addr == NULL) |
182 | { |
183 | killfnetnode(data); |
184 | putfnetnode(data); |
185 | } else { |
186 | netcsconn(addr, addrlen, (void (*)(struct socket *, int, void *))conncb, data); |
187 | } |
188 | } |
189 | |
190 | static struct fnetpeerdatum *finddatum(struct fnetnode *fn, wchar_t *id) |
191 | { |
192 | struct fnetpeerdatum *datum; |
193 | |
194 | for(datum = fn->peerdata; datum != NULL; datum = datum->next) |
195 | { |
196 | if(!wcscmp(datum->id, id)) |
197 | break; |
198 | } |
199 | return(datum); |
200 | } |
201 | |
202 | static struct fnetpeerdatum *adddatum(struct fnetnode *fn, wchar_t *id, int datatype) |
203 | { |
204 | struct fnetpeerdatum *new; |
205 | |
206 | new = smalloc(sizeof(*new)); |
207 | new->refcount = 0; |
208 | new->id = swcsdup(id); |
209 | new->datatype = datatype; |
210 | new->prev = NULL; |
211 | new->next = fn->peerdata; |
212 | if(fn->peerdata != NULL) |
213 | fn->peerdata->prev = new; |
214 | fn->peerdata = new; |
215 | return(new); |
216 | } |
217 | |
d9c95ea0 |
218 | static struct fnetpeerdi *difindoradd(struct fnetpeer *peer, struct fnetpeerdatum *datum, int *isnew) |
d3372da9 |
219 | { |
220 | int i; |
221 | |
222 | for(i = 0; i < peer->dinum; i++) |
223 | { |
224 | if(peer->peerdi[i].datum == datum) |
225 | break; |
226 | } |
227 | if(i >= peer->dinum) |
228 | { |
229 | peer->peerdi = srealloc(peer->peerdi, sizeof(struct fnetpeerdi) * (peer->dinum + 1)); |
230 | memset(&peer->peerdi[peer->dinum], 0, sizeof(struct fnetpeerdi)); |
231 | peer->peerdi[peer->dinum].datum = datum; |
232 | datum->refcount++; |
d9c95ea0 |
233 | if(isnew != NULL) |
234 | *isnew = 1; |
d3372da9 |
235 | return(&peer->peerdi[peer->dinum++]); |
236 | } else { |
d9c95ea0 |
237 | if(isnew != NULL) |
238 | *isnew = 0; |
d3372da9 |
239 | return(&peer->peerdi[i]); |
240 | } |
241 | } |
242 | |
243 | void fnetpeersetstr(struct fnetpeer *peer, wchar_t *id, wchar_t *value) |
244 | { |
245 | struct fnetpeerdatum *datum; |
246 | struct fnetpeerdi *di; |
d9c95ea0 |
247 | int changed; |
d3372da9 |
248 | |
249 | if((datum = finddatum(peer->fn, id)) == NULL) |
250 | datum = adddatum(peer->fn, id, FNPD_STR); |
d9c95ea0 |
251 | di = difindoradd(peer, datum, &changed); |
252 | if(di->data.str != NULL) { |
378f34d2 |
253 | changed = (changed || wcscmp(value, di->data.str)); |
d3372da9 |
254 | free(di->data.str); |
d9c95ea0 |
255 | } else { |
256 | changed = 1; |
257 | } |
d3372da9 |
258 | di->data.str = swcsdup(value); |
d9c95ea0 |
259 | if(changed) |
260 | CBCHAINDOCB(peer->fn, fnetpeer_chdi, peer->fn, peer, di); |
d3372da9 |
261 | } |
262 | |
263 | void fnetpeersetnum(struct fnetpeer *peer, wchar_t *id, int value) |
264 | { |
265 | struct fnetpeerdatum *datum; |
266 | struct fnetpeerdi *di; |
d9c95ea0 |
267 | int changed; |
d3372da9 |
268 | |
269 | if((datum = finddatum(peer->fn, id)) == NULL) |
270 | datum = adddatum(peer->fn, id, FNPD_INT); |
d9c95ea0 |
271 | di = difindoradd(peer, datum, &changed); |
272 | changed = (changed || (di->data.num != value)); |
d3372da9 |
273 | di->data.num = value; |
d9c95ea0 |
274 | if(changed) |
275 | CBCHAINDOCB(peer->fn, fnetpeer_chdi, peer->fn, peer, di); |
d3372da9 |
276 | } |
277 | |
278 | void fnetpeersetlnum(struct fnetpeer *peer, wchar_t *id, long long value) |
279 | { |
280 | struct fnetpeerdatum *datum; |
281 | struct fnetpeerdi *di; |
d9c95ea0 |
282 | int changed; |
d3372da9 |
283 | |
284 | if((datum = finddatum(peer->fn, id)) == NULL) |
285 | datum = adddatum(peer->fn, id, FNPD_LL); |
d9c95ea0 |
286 | di = difindoradd(peer, datum, &changed); |
287 | changed = (changed || (di->data.lnum != value)); |
d3372da9 |
288 | di->data.lnum = value; |
d9c95ea0 |
289 | if(changed) |
290 | CBCHAINDOCB(peer->fn, fnetpeer_chdi, peer->fn, peer, di); |
d3372da9 |
291 | } |
292 | |
293 | static void putdatum(struct fnetpeer *peer, struct fnetpeerdatum *datum) |
294 | { |
295 | if(--datum->refcount > 0) |
296 | return; |
297 | if(datum->next != NULL) |
298 | datum->next->prev = datum->prev; |
299 | if(datum->prev != NULL) |
300 | datum->prev->next = datum->next; |
301 | if(datum == peer->fn->peerdata) |
302 | peer->fn->peerdata = datum->next; |
303 | free(datum->id); |
304 | free(datum); |
305 | } |
306 | |
307 | void fnetpeerunset(struct fnetpeer *peer, wchar_t *id) |
308 | { |
309 | int i; |
310 | struct fnetpeerdatum *datum; |
311 | |
312 | if((datum = finddatum(peer->fn, id)) == NULL) |
313 | return; |
314 | for(i = 0; i < peer->dinum; i++) |
315 | { |
316 | if(peer->peerdi[i].datum == datum) |
317 | break; |
318 | } |
319 | if(i >= peer->dinum) |
320 | return; |
321 | if((datum->datatype == FNPD_STR) && (peer->peerdi[i].data.str != NULL)) |
322 | free(peer->peerdi[i].data.str); |
323 | peer->dinum--; |
324 | memmove(&peer->peerdi[i], &peer->peerdi[i + 1], sizeof(struct fnetpeerdi) * (peer->dinum - i)); |
325 | putdatum(peer, datum); |
326 | } |
327 | |
328 | struct fnetpeer *fnetaddpeer(struct fnetnode *fn, wchar_t *id, wchar_t *nick) |
329 | { |
330 | struct fnetpeer *new; |
331 | |
332 | new = smalloc(sizeof(*new)); |
333 | new->fn = fn; |
334 | new->id = swcsdup(id); |
335 | new->nick = swcsdup(nick); |
336 | new->flags.w = 0; |
337 | new->dinum = 0; |
338 | new->peerdi = NULL; |
339 | new->next = fn->peers; |
340 | new->prev = NULL; |
341 | if(fn->peers != NULL) |
342 | fn->peers->prev = new; |
343 | fn->peers = new; |
344 | fn->numpeers++; |
345 | CBCHAINDOCB(fn, fnetnode_ac, fn, L"numpeers"); |
d9c95ea0 |
346 | CBCHAINDOCB(fn, fnetpeer_new, fn, new); |
d3372da9 |
347 | return(new); |
348 | } |
349 | |
350 | void fnetdelpeer(struct fnetpeer *peer) |
351 | { |
352 | int i; |
353 | |
354 | if(peer->next != NULL) |
355 | peer->next->prev = peer->prev; |
356 | if(peer->prev != NULL) |
357 | peer->prev->next = peer->next; |
358 | if(peer->fn->peers == peer) |
359 | peer->fn->peers = peer->next; |
360 | peer->fn->numpeers--; |
361 | CBCHAINDOCB(peer->fn, fnetnode_ac, peer->fn, L"numpeers"); |
d9c95ea0 |
362 | CBCHAINDOCB(peer->fn, fnetpeer_del, peer->fn, peer); |
d3372da9 |
363 | free(peer->id); |
364 | free(peer->nick); |
365 | for(i = 0; i < peer->dinum; i++) |
366 | { |
367 | if((peer->peerdi[i].datum->datatype == FNPD_STR) && (peer->peerdi[i].data.str != NULL)) |
368 | free(peer->peerdi[i].data.str); |
369 | putdatum(peer, peer->peerdi[i].datum); |
370 | } |
371 | if(peer->peerdi != NULL) |
372 | free(peer->peerdi); |
373 | free(peer); |
374 | } |
375 | |
376 | struct fnetpeer *fnetfindpeer(struct fnetnode *fn, wchar_t *id) |
377 | { |
378 | struct fnetpeer *cur; |
379 | |
380 | for(cur = fn->peers; (cur != NULL) && wcscmp(cur->id, id); cur = cur->next); |
381 | return(cur); |
382 | } |
383 | |
384 | int fnetsetnick(struct fnetnode *fn, wchar_t *newnick) |
385 | { |
386 | int ret; |
387 | |
388 | if(fn->fnet->setnick != NULL) |
389 | ret = fn->fnet->setnick(fn, newnick); |
390 | else |
391 | ret = 0; |
392 | if(!ret) |
393 | { |
394 | if(fn->mynick != NULL) |
395 | free(fn->mynick); |
396 | fn->mynick = swcsdup(newnick); |
397 | } |
398 | return(ret); |
399 | } |
400 | |
401 | int fnetsendchat(struct fnetnode *fn, int public, wchar_t *to, wchar_t *string) |
402 | { |
403 | if(fn->fnet->sendchat == NULL) |
404 | { |
405 | errno = ENOTSUP; |
406 | return(-1); |
407 | } |
408 | return(fn->fnet->sendchat(fn, public, to, string)); |
409 | } |
410 | |
411 | int fnetsearch(struct fnetnode *fn, struct search *srch, struct srchfnnlist *ln) |
412 | { |
413 | if(fn->fnet->search == NULL) |
414 | { |
415 | errno = ENOTSUP; |
416 | return(-1); |
417 | } |
418 | return(fn->fnet->search(fn, srch, ln)); |
419 | } |
420 | |
421 | void fnetsetname(struct fnetnode *fn, wchar_t *newname) |
422 | { |
423 | if(fn->name != NULL) |
424 | free(fn->name); |
425 | fn->name = swcsdup(newname); |
426 | CBCHAINDOCB(fn, fnetnode_ac, fn, L"name"); |
427 | } |
428 | |
429 | void fnetsetstate(struct fnetnode *fn, int newstate) |
430 | { |
431 | fn->state = newstate; |
432 | CBCHAINDOCB(fn, fnetnode_ac, fn, L"state"); |
433 | } |
434 | |
435 | struct fnet *findfnet(wchar_t *name) |
436 | { |
437 | struct fnet *fnet; |
438 | |
439 | for(fnet = networks; fnet != NULL; fnet = fnet->next) |
440 | { |
441 | if(!wcscmp(name, fnet->name)) |
442 | break; |
443 | } |
444 | return(fnet); |
445 | } |
446 | |
efc05613 |
447 | struct fnetnode *fnetinitconnect(wchar_t *name, char *addr, struct wcspair *args) |
d3372da9 |
448 | { |
449 | struct fnet *fnet; |
450 | struct fnetnode *fn; |
efc05613 |
451 | struct wcspair *arg; |
d3372da9 |
452 | |
453 | if((fnet = findfnet(name)) == NULL) |
454 | { |
455 | errno = EPROTONOSUPPORT; |
456 | return(NULL); |
457 | } |
458 | fn = newfn(fnet); |
d1e8b9fd |
459 | fn->pubid = icmbstowcs(addr, NULL); |
460 | if(fn->pubid == NULL) |
461 | fn->pubid = swcsdup(L""); |
54771774 |
462 | fn->args = args; |
efc05613 |
463 | for(arg = fn->args; arg != NULL; arg = arg->next) |
464 | { |
465 | if(!wcscmp(arg->key, L"nick")) |
466 | fnetsetnick(fn, arg->val); |
467 | } |
d3372da9 |
468 | getfnetnode(fn); |
469 | if(netresolve(addr, (void (*)(struct sockaddr *, int, void *))resolvecb, fn) < 0) |
470 | return(NULL); |
471 | return(fn); |
472 | } |
473 | |
474 | void regfnet(struct fnet *fnet) |
475 | { |
476 | fnet->next = networks; |
477 | networks = fnet; |
478 | } |
479 | |
480 | /* |
481 | * Note on the chat string: Must be in UNIX text file format - that |
482 | * is, LF line endings. The filenet-specific code must see to it that |
483 | * any other kind of format is converted into that. In the future, |
484 | * certain control characters and escape sequences will be parsed by |
485 | * the client. Make sure that any filenet-specific code strips any |
486 | * such that aren't supposed to be in the protocol. |
487 | * |
488 | * Note on "name": This is supposed to be an identifier for the |
489 | * source. If the chat is a public message, set "public" to non-zero |
490 | * and "name" to whatever "chat room" name is appropriate for the |
491 | * fnetnode, but not NULL. If there is a "default" channel in this |
492 | * filenet, set "name" to the empty string. If the chat is a private |
493 | * message, name is ignored. |
494 | */ |
495 | void fnethandlechat(struct fnetnode *fn, int public, wchar_t *name, wchar_t *peer, wchar_t *chat) |
496 | { |
497 | CBCHAINDOCB(fn, fnetnode_chat, fn, public, name, peer, chat); |
498 | } |
499 | |
500 | static struct configvar myvars[] = |
501 | { |
502 | {CONF_VAR_INT, "srchwait", {.num = 15}}, |
503 | {CONF_VAR_INT, "fntos", {.num = 0}}, |
504 | {CONF_VAR_INT, "fnptos", {.num = 0}}, |
cd340dab |
505 | {CONF_VAR_INT, "maxnodes", {.num = 0}}, |
d3372da9 |
506 | {CONF_VAR_END} |
507 | }; |
508 | |
509 | static struct module me = |
510 | { |
511 | .conf = |
512 | { |
513 | .vars = myvars |
514 | }, |
515 | .name = "fnet" |
516 | }; |
517 | |
518 | MODULE(me) |