2 * Dolda Connect - Modular multiuser Direct Connect-style client
3 * Copyright (C) 2004 Fredrik Tolf <fredrik@dolda2000.com>
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.
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.
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
21 #include <sys/socket.h>
33 static void freepeer(struct fnetpeer *peer);
35 static struct fnet *networks = NULL;
36 struct fnetnode *fnetnodes = NULL;
38 GCBCHAIN(newfncb, struct fnetnode *);
40 static struct fnetnode *newfn(struct fnet *fnet)
45 new = smalloc(sizeof(*new));
46 memset(new, 0, sizeof(*new));
50 new->mynick = swcsdup(confgetstr("cli", "defnick"));
51 new->srchwait = confgetint("fnet", "srchwait");
53 CBCHAININIT(new, fnetnode_ac);
54 CBCHAININIT(new, fnetnode_chat);
55 CBCHAININIT(new, fnetnode_unlink);
56 CBCHAININIT(new, fnetnode_destroy);
57 CBCHAININIT(new, fnetpeer_new);
58 CBCHAININIT(new, fnetpeer_del);
59 CBCHAININIT(new, fnetpeer_chdi);
66 void killfnetnode(struct fnetnode *fn)
68 fnetsetstate(fn, FNN_DEAD);
73 void getfnetnode(struct fnetnode *fn)
77 fprintf(stderr, "getfnetnode on id %i at %p, refcount=%i\n", fn->id, fn, fn->refcount);
81 static void freepeers(struct btree *n)
91 void putfnetnode(struct fnetnode *fn)
96 fprintf(stderr, "putfnetnode on id %i at %p, refcount=%i\n", fn->id, fn, fn->refcount - 1);
100 for(cur = fnetnodes; cur != NULL; cur = cur->next)
103 flog(LOG_CRIT, "BUG: fnetnode reached refcount 0 while still in list - id %i", fn->id);
105 CBCHAINDOCB(fn, fnetnode_destroy, fn);
106 CBCHAINFREE(fn, fnetnode_ac);
107 CBCHAINFREE(fn, fnetnode_chat);
108 CBCHAINFREE(fn, fnetnode_unlink);
109 CBCHAINFREE(fn, fnetnode_destroy);
110 CBCHAINFREE(fn, fnetpeer_new);
111 CBCHAINFREE(fn, fnetpeer_del);
112 CBCHAINFREE(fn, fnetpeer_chdi);
113 if((fn->fnet->destroy != NULL) && fn->connected)
114 fn->fnet->destroy(fn);
115 while(fn->args != NULL)
116 freewcspair(fn->args, &fn->args);
117 freepeers(fn->peers);
118 if(fn->mynick != NULL)
120 if(fn->pubid != NULL)
124 if(fn->owner != NULL)
130 struct fnetnode *findfnetnode(int id)
134 for(fn = fnetnodes; (fn != NULL) && (fn->id != id); fn = fn->next);
138 void linkfnetnode(struct fnetnode *fn)
143 fn->next = fnetnodes;
144 if(fnetnodes != NULL)
145 fnetnodes->prev = fn;
148 GCBCHAINDOCB(newfncb, fn);
151 void unlinkfnetnode(struct fnetnode *fn)
156 fnetnodes = fn->next;
158 fn->next->prev = fn->prev;
160 fn->prev->next = fn->next;
162 CBCHAINDOCB(fn, fnetnode_unlink, fn);
166 static void conncb(struct socket *sk, int err, struct fnetnode *data)
174 fnetsetstate(data, FNN_HS);
175 socksettos(sk, confgetint("fnet", "fntos"));
176 data->fnet->connect(data, sk);
181 static void resolvecb(struct sockaddr *addr, int addrlen, struct fnetnode *data)
187 sk = netcsconn(addr, addrlen, (void (*)(struct socket *, int, void *))conncb, data);
197 static struct fnetpeerdatum *finddatum(struct fnetnode *fn, wchar_t *id)
199 struct fnetpeerdatum *datum;
201 for(datum = fn->peerdata; datum != NULL; datum = datum->next)
203 if(!wcscmp(datum->id, id))
209 static struct fnetpeerdatum *adddatum(struct fnetnode *fn, wchar_t *id, int datatype)
211 struct fnetpeerdatum *new;
213 new = smalloc(sizeof(*new));
215 new->id = swcsdup(id);
216 new->datatype = datatype;
218 new->next = fn->peerdata;
219 if(fn->peerdata != NULL)
220 fn->peerdata->prev = new;
225 static struct fnetpeerdi *difindoradd(struct fnetpeer *peer, struct fnetpeerdatum *datum, int *isnew)
229 for(i = 0; i < peer->dinum; i++)
231 if(peer->peerdi[i].datum == datum)
236 peer->peerdi = srealloc(peer->peerdi, sizeof(struct fnetpeerdi) * (peer->dinum + 1));
237 memset(&peer->peerdi[peer->dinum], 0, sizeof(struct fnetpeerdi));
238 peer->peerdi[peer->dinum].datum = datum;
242 return(&peer->peerdi[peer->dinum++]);
246 return(&peer->peerdi[i]);
250 void fnetpeersetstr(struct fnetpeer *peer, wchar_t *id, wchar_t *value)
252 struct fnetpeerdatum *datum;
253 struct fnetpeerdi *di;
256 if((datum = finddatum(peer->fn, id)) == NULL)
257 datum = adddatum(peer->fn, id, FNPD_STR);
258 di = difindoradd(peer, datum, &changed);
259 if(di->data.str != NULL) {
260 changed = (changed || wcscmp(value, di->data.str));
265 di->data.str = swcsdup(value);
267 CBCHAINDOCB(peer->fn, fnetpeer_chdi, peer->fn, peer, di);
270 void fnetpeersetnum(struct fnetpeer *peer, wchar_t *id, int value)
272 struct fnetpeerdatum *datum;
273 struct fnetpeerdi *di;
276 if((datum = finddatum(peer->fn, id)) == NULL)
277 datum = adddatum(peer->fn, id, FNPD_INT);
278 di = difindoradd(peer, datum, &changed);
279 changed = (changed || (di->data.num != value));
280 di->data.num = value;
282 CBCHAINDOCB(peer->fn, fnetpeer_chdi, peer->fn, peer, di);
285 void fnetpeersetlnum(struct fnetpeer *peer, wchar_t *id, long long value)
287 struct fnetpeerdatum *datum;
288 struct fnetpeerdi *di;
291 if((datum = finddatum(peer->fn, id)) == NULL)
292 datum = adddatum(peer->fn, id, FNPD_LL);
293 di = difindoradd(peer, datum, &changed);
294 changed = (changed || (di->data.lnum != value));
295 di->data.lnum = value;
297 CBCHAINDOCB(peer->fn, fnetpeer_chdi, peer->fn, peer, di);
300 static void putdatum(struct fnetpeer *peer, struct fnetpeerdatum *datum)
302 if(--datum->refcount > 0)
304 if(datum->next != NULL)
305 datum->next->prev = datum->prev;
306 if(datum->prev != NULL)
307 datum->prev->next = datum->next;
308 if(datum == peer->fn->peerdata)
309 peer->fn->peerdata = datum->next;
314 void fnetpeerunset(struct fnetpeer *peer, wchar_t *id)
317 struct fnetpeerdatum *datum;
319 if((datum = finddatum(peer->fn, id)) == NULL)
321 for(i = 0; i < peer->dinum; i++)
323 if(peer->peerdi[i].datum == datum)
328 if((datum->datatype == FNPD_STR) && (peer->peerdi[i].data.str != NULL))
329 free(peer->peerdi[i].data.str);
331 memmove(&peer->peerdi[i], &peer->peerdi[i + 1], sizeof(struct fnetpeerdi) * (peer->dinum - i));
332 putdatum(peer, datum);
335 static int peercmpid(void *a, void *b)
337 return(wcscmp(((struct fnetpeer *)a)->id, ((struct fnetpeer *)b)->id));
340 struct fnetpeer *fnetaddpeer(struct fnetnode *fn, wchar_t *id, wchar_t *nick)
342 struct fnetpeer *new;
344 new = smalloc(sizeof(*new));
346 new->id = swcsdup(id);
347 new->nick = swcsdup(nick);
351 bbtreeput(&fn->peers, new, peercmpid);
353 CBCHAINDOCB(fn, fnetnode_ac, fn, L"numpeers");
354 CBCHAINDOCB(fn, fnetpeer_new, fn, new);
358 static void freepeer(struct fnetpeer *peer)
362 peer->fn->numpeers--;
365 for(i = 0; i < peer->dinum; i++)
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);
371 if(peer->peerdi != NULL)
376 void fnetdelpeer(struct fnetpeer *peer)
378 bbtreedel(&peer->fn->peers, peer, peercmpid);
379 CBCHAINDOCB(peer->fn, fnetnode_ac, peer->fn, L"numpeers");
380 CBCHAINDOCB(peer->fn, fnetpeer_del, peer->fn, peer);
384 void fnetpeerdm(struct fnetnode *fn)
387 struct fnetpeer *peer;
392 for(peer = btreeiter(fn->peers); peer != NULL; peer = btreeiter(NULL)) {
393 if(!peer->flags.b.delete) {
394 bbtreeput(&new, peer, peercmpid);
397 CBCHAINDOCB(peer->fn, fnetpeer_del, peer->fn, peer);
401 btreefree(fn->peers);
404 CBCHAINDOCB(peer->fn, fnetnode_ac, peer->fn, L"numpeers");
407 struct fnetpeer *fnetfindpeer(struct fnetnode *fn, wchar_t *id)
412 return(btreeget(fn->peers, &key, peercmpid));
415 int fnetsetnick(struct fnetnode *fn, wchar_t *newnick)
419 if((fn->fnet->setnick != NULL) && fn->connected)
420 ret = fn->fnet->setnick(fn, newnick);
425 if(fn->mynick != NULL)
427 fn->mynick = swcsdup(newnick);
432 int fnetsendchat(struct fnetnode *fn, int public, wchar_t *to, wchar_t *string)
434 if((fn->fnet->sendchat == NULL) || !fn->connected)
439 return(fn->fnet->sendchat(fn, public, to, string));
442 int fnetsearch(struct fnetnode *fn, struct search *srch, struct srchfnnlist *ln)
444 if(fn->fnet->search == NULL)
449 return(fn->fnet->search(fn, srch, ln));
452 void fnetsetname(struct fnetnode *fn, wchar_t *newname)
456 fn->name = swcsdup(newname);
457 CBCHAINDOCB(fn, fnetnode_ac, fn, L"name");
460 void fnetsetstate(struct fnetnode *fn, int newstate)
462 fn->state = newstate;
463 CBCHAINDOCB(fn, fnetnode_ac, fn, L"state");
466 wchar_t *fnfilebasename(wchar_t *path)
470 if((p = wcsrchr(path, L'/')) != NULL)
475 struct fnet *findfnet(wchar_t *name)
479 for(fnet = networks; fnet != NULL; fnet = fnet->next)
481 if(!wcscmp(name, fnet->name))
487 struct fnetnode *fnetinitconnect(wchar_t *name, wchar_t *owner, char *addr, struct wcspair *args)
493 if((fnet = findfnet(name)) == NULL)
495 errno = EPROTONOSUPPORT;
499 fn->owner = swcsdup(owner);
500 fn->pubid = icmbstowcs(addr, NULL);
501 if(fn->pubid == NULL)
502 fn->pubid = swcsdup(L"");
504 for(arg = fn->args; arg != NULL; arg = arg->next)
506 if(!wcscmp(arg->key, L"nick"))
507 fnetsetnick(fn, arg->val);
510 if(netresolve(addr, (void (*)(struct sockaddr *, int, void *))resolvecb, fn) < 0)
515 void regfnet(struct fnet *fnet)
517 fnet->next = networks;
522 * Note on the chat string: Must be in UNIX text file format - that
523 * is, LF line endings. The filenet-specific code must see to it that
524 * any other kind of format is converted into that. In the future,
525 * certain control characters and escape sequences will be parsed by
526 * the client. Make sure that any filenet-specific code strips any
527 * such that aren't supposed to be in the protocol.
529 * Note on "name": This is supposed to be an identifier for the
530 * source. If the chat is a public message, set "public" to non-zero
531 * and "name" to whatever "chat room" name is appropriate for the
532 * fnetnode, but not NULL. If there is a "default" channel in this
533 * filenet, set "name" to the empty string. If the chat is a private
534 * message, name is ignored.
536 void fnethandlechat(struct fnetnode *fn, int public, wchar_t *name, wchar_t *peer, wchar_t *chat)
538 CBCHAINDOCB(fn, fnetnode_chat, fn, public, name, peer, chat);
541 static struct configvar myvars[] =
543 /** The number of seconds to wait between searches. Most hubs
544 * require at least ten seconds, and quite often network lag will
545 * often make searches arrive to the hub more often than sent. It
546 * may be semi-dangerous to specify too low a value, since hubs
547 * will often kick users that search too often (even when the
548 * reason is network lag -- there is no way for the hub to know
549 * this), but it is quite annoying to set too high a value. 15 to
550 * 40 seconds are the recommended range (although the default is
551 * 15 seconds, it is recommended to set to 30 seconds). */
552 {CONF_VAR_INT, "srchwait", {.num = 15}},
553 /** The TOS value to use for hub connections (see the TOS VALUES
555 {CONF_VAR_INT, "fntos", {.num = 0}},
556 /** The TOS value to use for peer connections (see the TOS VALUES
558 {CONF_VAR_INT, "fnptos", {.num = 0}},
559 /** Specifies a maximum number of simultaneously connected
560 * hubs. Attempts to connect to new hubs beyond this limit will
561 * return an error. Set to zero to remove the limit. */
562 {CONF_VAR_INT, "maxnodes", {.num = 0}},
566 static struct module me =