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