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Add anti-segv check.
[doldaconnect.git] / daemon / fnet-dc.c
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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 <stdlib.h>
20#include <stdio.h>
21#include <wchar.h>
22#include <malloc.h>
23#include <unistd.h>
24#include <fcntl.h>
25#include <string.h>
26#include <netinet/in.h>
27#include <arpa/inet.h>
28#include <alloca.h>
29#include <wctype.h>
30#include <time.h>
31#include <errno.h>
32#include <bzlib.h>
33#include <zlib.h>
34#include <sys/stat.h>
35
36#ifdef HAVE_CONFIG_H
37#include <config.h>
38#endif
39#include "filenet.h"
40#include "log.h"
41#include "module.h"
42#include "utils.h"
43#include "client.h"
44#include "transfer.h"
45#include "sysevents.h"
46#include "net.h"
9a2d6cb8 47#include "tiger.h"
d3372da9 48
49/*
50 * The Direct Connect protocol is extremely ugly. Thus, this code must
51 * also be a bit ugly in certain places. Please forgive me. =/
52 *
53 * This also means that there might be some pieces of the code that
54 * look completely illogical to you, and you think that you may make
55 * them much neater/better. However, in many cases it might just be
56 * that it's required to cope with some oddity of the protocol, such
57 * as the amazingly ugly delayed key response in the peer protocol.
58 */
59
60/* I assume this is the correct character set to use for DC,
61 * considering it was developed without i18n support under Windows */
62#define DCCHARSET "windows-1252"
63
64#ifdef DCPP_MASQUERADE
65/*
66 * I honestly don't want to pretend being a client that I'm not, but
67 * there are so many hubs that simply do not accept any clients
68 * outside their whitelists, for no obvious reasons, so I feel that I
69 * am left with little choice. Anyhow, as long as I actually support
70 * all the features that my faked DC++ version does, there should be
71 * very little harm done.
72 */
73#define DCIDTAG "++"
74#define DCIDTAGV "0.674"
75#define DCIDFULL "DC++ 0.674"
76#else
77#define DCIDTAG "Dolda"
78#define DCIDTAGV VERSION
79#define DCIDFULL "DoldaConnect " VERSION
80#endif
81
82#define PEER_CMD 0
9a2d6cb8 83#define PEER_STOP 1
84#define PEER_TRNS 2
85#define PEER_SYNC 3
86#define PEER_TTHL 4
d3372da9 87
88#define CPRS_NONE 0
89#define CPRS_ZLIB 1
90
91struct command
92{
93 char *name;
94 void (*handler)(struct socket *sk, void *data, char *cmd, char *args);
9a2d6cb8 95 int stop;
d3372da9 96};
97
98struct qcommand
99{
100 struct qcommand *next;
101 char *string;
102};
103
104struct dchub
105{
106 char *inbuf;
107 size_t inbufdata, inbufsize;
108 struct qcommand *queue;
1c4b02cd 109 int extended, dcppemu;
d3372da9 110 char *nativename;
111 char *nativenick;
112};
113
114struct dcexppeer
115{
116 struct dcexppeer *next, *prev;
117 char *nick;
118 struct fnetnode *fn;
119 struct timer *expire;
120};
121
122struct dcpeer
123{
124 struct dcpeer *next, *prev;
125 struct socket *sk;
126 struct fnetnode *fn;
127 char *inbuf;
128 size_t inbufdata, inbufsize;
9a2d6cb8 129 size_t curread, totalsize;
d3372da9 130 int freeing;
1e9d82b1 131 struct timer *timeout;
d3372da9 132 struct qcommand *queue;
133 struct transfer *transfer;
134 int state;
135 int ptclose; /* Close after transfer is complete */
136 int accepted; /* If false, we connected, otherwise, we accepted */
1c4b02cd 137 int extended, dcppemu;
d3372da9 138 int direction; /* Using the constants from transfer.h */
139 int compress;
df873cd0 140 int hascurpos, fetchingtthl, notthl;
9a2d6cb8 141 struct tigertreehash tth;
d3372da9 142 void *cprsdata;
d3372da9 143 char *key;
144 char *nativename;
145 char **supports;
146 wchar_t *wcsname;
147};
148
149static struct fnet dcnet;
150static struct transferiface dctransfer;
151static struct socket *udpsock = NULL;
152static struct socket *tcpsock = NULL;
153static struct dcpeer *peers = NULL;
154int numdcpeers = 0;
155static struct dcexppeer *expected = NULL;
156static char *hmlistname = NULL;
157static char *xmllistname = NULL;
158static char *xmlbz2listname = NULL;
159
160static void peerconnect(struct socket *sk, int err, struct fnetnode *fn);
161static void freedcpeer(struct dcpeer *peer);
162static void transread(struct socket *sk, struct dcpeer *peer);
163static void transerr(struct socket *sk, int err, struct dcpeer *peer);
164static void transwrite(struct socket *sk, struct dcpeer *peer);
165static void updatehmlist(void);
166static void updatexmllist(void);
167static void updatexmlbz2list(void);
9a2d6cb8 168static void requestfile(struct dcpeer *peer);
d3372da9 169
170static int reservedchar(unsigned char c)
171{
172 return((c == 0) || (c == 5) || (c == 124) || (c == 96) || (c == 126) || (c == 36));
173}
174
175/* Oh, how I despise having to do this... */
176static char *dcmakekey(char *lock)
177{
178 int i, len, offset;
179 char *buf, *key;
180 char save;
181
182 buf = smalloc(strlen(lock));
183 save = 5;
184 len = 0;
185 for(i = 0; lock[i]; i++)
186 {
187 buf[i] = lock[i] ^ save;
188 buf[i] = ((buf[i] & 0x0F) << 4) | ((buf[i] & 0xF0) >> 4);
189 save = lock[i];
190 if((i != 0) && reservedchar(buf[i]))
191 len += 10;
192 else
193 len++;
194 }
195 buf[0] ^= buf[i - 1];
196 if(reservedchar(buf[0]))
197 len += 10;
198 else
199 len++;
200 key = smalloc(len + 1);
201 offset = 0;
202 for(i = 0; lock[i] != 0; i++)
203 {
204 if(reservedchar(buf[i]))
205 offset += sprintf(key + offset, "/%%DCN%03i%%/", buf[i]);
206 else
207 key[offset++] = buf[i];
208 }
209 key[offset] = 0;
210 free(buf);
211 return(key);
212}
213
9a2d6cb8 214static char *pathnmdc2adc(char *path)
215{
216 char *ret;
217 size_t retsize, retdata;
218
219 if(!strcmp(path, "files.xml") || !strcmp(path, "files.xml.bz2") || !strcmp(path, "MyList.DcLst"))
220 return(sstrdup(path));
221 ret = NULL;
222 retsize = retdata = 0;
223 addtobuf(ret, '/');
224 for(; *path; path++)
225 {
226 if(*path == '\\')
227 addtobuf(ret, '/');
228 else
229 addtobuf(ret, *path);
230 }
231 addtobuf(ret, 0);
232 return(ret);
233}
234
235static int isdchash(struct hash *hash)
236{
237 if(wcscmp(hash->algo, L"TTH"))
238 return(0);
239 if(hash->len != 24)
240 return(0);
241 return(1);
242}
243
244static int supports(struct dcpeer *peer, char *cap)
245{
246 char **p;
247
248 if(peer->supports == NULL)
249 return(0);
250 for(p = peer->supports; *p != NULL; p++)
251 {
252 if(!strcasecmp(*p, cap))
253 return(1);
254 }
255 return(0);
256}
257
d3372da9 258static void endcompress(struct dcpeer *peer)
259{
260 if(peer->compress == CPRS_ZLIB)
261 {
262 deflateEnd(peer->cprsdata);
263 free(peer->cprsdata);
264 }
265 peer->compress = CPRS_NONE;
266}
267
268static void initcompress(struct dcpeer *peer, int algo)
269{
270 int ret;
271
272 endcompress(peer);
273 peer->compress = algo;
274 if(algo == CPRS_ZLIB)
275 {
276 peer->cprsdata = smalloc(sizeof(z_stream));
277 memset(peer->cprsdata, 0, sizeof(z_stream));
278 if((ret = deflateInit(peer->cprsdata, 3)) != Z_OK)
279 {
280 flog(LOG_CRIT, "Aiya! zlib refuses to init (%i)!", ret);
281 abort();
282 }
283 }
284}
285
286static void unquote(wchar_t *in)
287{
288 wchar_t *p, *p2, nc;
289
290 for(p = in; *p != L'\0'; p++)
291 {
292 if(*p == L'&')
293 {
294 for(p2 = p + 1; (*p2 != L'\0') && (*p2 != L';') && (*p2 != L'&'); p2++);
295 if(*p2 == L'&')
296 continue;
297 if(*p2 == L'\0')
298 return;
299 *p2 = L'\0';
300 nc = L'\0';
301 if(!wcscmp(p + 1, L"amp"))
302 {
303 nc = L'&';
304 } else if(p[1] == L'#') {
305 nc = ucptowc(wcstol(p + 2, NULL, 10));
306 }
307 if(nc == L'\0')
308 {
309 *p2 = L';';
310 p = p2;
311 continue;
312 }
313 *p = nc;
314 memmove(p + 1, p2 + 1, (wcslen(p2 + 1) + 1) * sizeof(wchar_t));
315 }
316 }
317}
318
319static void freeexppeer(struct dcexppeer *ep)
320{
321 if(ep->next != NULL)
322 ep->next->prev = ep->prev;
323 if(ep->prev != NULL)
324 ep->prev->next = ep->next;
325 if(ep == expected)
326 expected = ep->next;
327 free(ep->nick);
328 putfnetnode(ep->fn);
329 if(ep->expire != NULL)
330 canceltimer(ep->expire);
331 free(ep);
332}
333
334static void exppeerexpire(int cancelled, struct dcexppeer *ep)
335{
336 ep->expire = NULL;
337 if(!cancelled)
338 freeexppeer(ep);
339}
340
341static struct dcexppeer *expectpeer(char *nick, struct fnetnode *fn)
342{
343 struct dcexppeer *ep;
344
345 ep = smalloc(sizeof(*ep));
346 ep->nick = sstrdup(nick);
347 getfnetnode(ep->fn = fn);
348 ep->expire = timercallback(ntime() + 300, (void (*)(int, void *))exppeerexpire, ep);
349 ep->next = expected;
350 ep->prev = NULL;
351 if(expected != NULL)
352 expected->prev = ep;
353 expected = ep;
354 return(ep);
355}
356
357static struct qcommand *newqcmd(struct qcommand **queue, char *string)
358{
359 struct qcommand *new;
360
361 while(*queue != NULL)
362 queue = &(*queue)->next;
363 new = smalloc(sizeof(*new));
364 new->string = sstrdup(string);
365 new->next = *queue;
366 *queue = new;
367 return(new);
368}
369
370static struct qcommand *ulqcmd(struct qcommand **queue)
371{
372 struct qcommand *qcmd;
373
374 if((qcmd = *queue) == NULL)
375 return(NULL);
376 *queue = qcmd->next;
377 return(qcmd);
378}
379
380static void freeqcmd(struct qcommand *qcmd)
381{
382 free(qcmd->string);
383 free(qcmd);
384}
385
386static void hubrecvchat(struct socket *sk, struct fnetnode *fn, char *from, char *string)
387{
388 wchar_t *chat, *wfrom, *wpeer;
389 char *p, *end;
390 struct fnetpeer *peer;
391
392 end = string + strlen(string);
393 while((p = strchr(string, 13)) != NULL)
394 memmove(p, p + 1, (end-- - p));
395 if(from != NULL)
396 {
397 if((strlen(string) > strlen(from) + 2) && (*string == '<') && !memcmp(string + 1, from, strlen(from)) && (*(string + strlen(from) + 1) == '>'))
398 string += strlen(from) + 2;
399 if((wfrom = icmbstowcs(from, DCCHARSET)) == NULL)
400 return;
401 wpeer = swcsdup(wfrom);
402 } else {
403 wfrom = NULL;
404 wpeer = NULL;
405 if(*string == '<')
406 {
407 for(p = string + 1; *p; p++)
408 {
409 if((*p == ' ') || (*p == '>'))
410 break;
411 }
412 if(*p == '>')
413 {
414 *(p++) = 0;
415 if(*p == ' ')
416 p++;
417 if((wpeer = icmbstowcs(string + 1, DCCHARSET)) == NULL)
418 return;
419 string = p;
420 }
421 }
422 if(wpeer == NULL)
423 wpeer = swcsdup(L"");
424 }
425 if((chat = icmbstowcs(string, DCCHARSET)) == NULL)
426 {
427 if(wfrom != NULL)
428 free(wfrom);
429 free(wpeer);
430 return;
431 }
432 unquote(chat);
433 if(wfrom != NULL)
434 {
435 if((peer = fnetfindpeer(fn, wfrom)) == NULL) /* Assume public chat */
436 fnethandlechat(fn, 1, wfrom, wpeer, chat);
437 else
438 fnethandlechat(fn, 0, wfrom, wpeer, chat);
439 } else {
440 fnethandlechat(fn, 1, L"", wpeer, chat);
441 }
442 if(wfrom != NULL)
443 free(wfrom);
444 free(wpeer);
445 free(chat);
446}
447
1e9d82b1 448static void peertimeout(int cancelled, struct dcpeer *peer)
449{
450 peer->timeout = NULL;
451 if(cancelled)
452 return;
453 freedcpeer(peer);
454}
455
d3372da9 456static void sendadc(struct socket *sk, char *arg)
457{
458 char *buf;
459 size_t bufsize, bufdata;
460
461 buf = NULL;
462 bufsize = bufdata = 0;
463 addtobuf(buf, ' ');
464 for(; *arg; arg++)
465 {
466 if(*arg == ' ')
467 {
468 bufcat(buf, "\\s", 2);
469 } else if(*arg == '\n') {
470 bufcat(buf, "\\n", 2);
471 } else if(*arg == '\\') {
472 bufcat(buf, "\\\\", 2);
473 } else {
474 addtobuf(buf, *arg);
475 }
476 }
477 sockqueue(sk, buf, bufdata);
478 free(buf);
479}
480
481static void sendadcf(struct socket *sk, char *arg, ...)
482{
483 char *buf;
484 va_list args;
485
486 va_start(args, arg);
487 buf = vsprintf2(arg, args);
488 va_end(args);
489 if(buf == NULL)
490 return;
491 sendadc(sk, buf);
492 free(buf);
493}
494
495static char **parseadc(char *args)
496{
497 char **retbuf;
498 size_t retbufsize, retbufdata;
499 char *buf;
500 size_t bufsize, bufdata;
501 int state;
502
503 retbuf = NULL;
504 buf = NULL;
505 retbufsize = retbufdata = bufsize = bufdata = 0;
506 state = 0;
507 while(state != 3)
508 {
509 switch(state)
510 {
511 case 0:
512 if(*args == 0)
513 state = 3;
514 else if(*args != ' ')
515 state = 1;
516 break;
517 case 1:
518 if((*args == ' ') || (*args == 0))
519 {
520 addtobuf(buf, 0);
521 addtobuf(retbuf, buf);
522 buf = NULL;
523 bufsize = bufdata = 0;
524 if(*args == 0)
525 state = 3;
526 } else if(*args == '\\') {
527 state = 2;
528 } else {
529 addtobuf(buf, *args);
530 }
531 args++;
532 break;
533 case 2:
534 if(*args == 0)
535 {
536 if(buf != NULL)
537 free(buf);
538 addtobuf(retbuf, NULL);
539 freeparr(retbuf);
540 return(NULL);
f24d5cfb 541 } else if((*args == 's') || (*args == ' ')) {
d3372da9 542 addtobuf(buf, ' ');
543 } else if(*args == 'n') {
544 addtobuf(buf, '\n');
545 } else if(*args == '\\') {
546 addtobuf(buf, '\\');
547 }
a478552c 548 args++;
d3372da9 549 state = 1;
a478552c 550 break;
d3372da9 551 }
552 }
553 if(buf != NULL)
554 free(buf);
555 addtobuf(retbuf, NULL);
556 return(retbuf);
557}
558
559/* Macros useful in command handlers */
560#define skipspace(s) ({if(((s) = strchr((s), ' ')) == NULL) return; else (s)++;})
561#define qstr(sk, str) sockqueue(sk, str, strlen(str))
562#define qstrf(sk, strandargs...) \
563do { \
564 char *__buf__; \
565 if((__buf__ = sprintf2(strandargs)) != NULL) { \
566 sockqueue(sk, __buf__, strlen(__buf__)); \
567 free(__buf__); \
568 } \
569} while(0)
570
571static char *tr(char *str, char *trans)
572{
573 char *p;
574
575 for(; *trans; trans += 2)
576 {
577 for(p = strchr(str, trans[0]); p != NULL; p = strchr(p, trans[0]))
578 *p = trans[1];
579 }
580 return(str);
581}
582
9a2d6cb8 583static char *getadcid(struct dcpeer *peer)
584{
585 char *buf;
586 char *ret;
d57f938a 587 int isfilelist;
9a2d6cb8 588
d57f938a 589 if(!wcscmp(peer->transfer->path, L"files.xml") || !wcscmp(peer->transfer->path, L"files.xml.bz2") || !wcscmp(peer->transfer->path, L"MyList.DcLst"))
590 isfilelist = 1;
591 if(!isfilelist && (peer->transfer->hash != NULL) && isdchash(peer->transfer->hash) && supports(peer, "tthf"))
9a2d6cb8 592 {
593 buf = base32encode(peer->transfer->hash->buf, 24);
594 ret = sprintf2("TTH/%.39s", buf);
595 free(buf);
596 } else {
597 if((buf = icwcstombs(peer->transfer->path, "UTF-8")) == NULL)
598 return(NULL);
599 ret = pathnmdc2adc(buf);
600 free(buf);
601 }
602 return(ret);
603}
604
605
d3372da9 606static int trresumecb(struct transfer *transfer, wchar_t *cmd, wchar_t *arg, struct dcpeer *peer)
607{
608 if(!wcscmp(cmd, L"resume"))
609 {
610 if(arg == NULL)
611 {
612 flog(LOG_WARNING, "filter returned no position for \"resume\" on transfer %i", transfer->id);
613 freedcpeer(peer);
614 } else {
615 transfer->curpos = wcstol(arg, NULL, 10);
9a2d6cb8 616 peer->hascurpos = 1;
617 requestfile(peer);
d3372da9 618 }
d3372da9 619 return(1);
620 }
621 return(0);
622}
623
9a2d6cb8 624static void sendmynick(struct dcpeer *peer)
d3372da9 625{
626 struct dchub *hub;
d3372da9 627
9a2d6cb8 628 hub = (peer->fn == NULL)?NULL:(peer->fn->data);
629 if(hub == NULL)
630 qstrf(peer->sk, "$MyNick %s|", icswcstombs(confgetstr("cli", "defnick"), DCCHARSET, "DoldaConnectUser-IN"));
631 else
632 qstrf(peer->sk, "$MyNick %s|", hub->nativenick);
633}
634
635static void sendpeerlock(struct dcpeer *peer)
636{
1c4b02cd 637 if(peer->dcppemu)
638 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DCPLUSPLUS0.674ABCABC|");
639 else
640 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DOLDA%sABCABCABC|", VERSION);
9a2d6cb8 641}
642
643static void sendsupports(struct dcpeer *peer)
644{
1c4b02cd 645 if(peer->dcppemu)
646 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG |");
647 else
648 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG|");
9a2d6cb8 649}
650
651static void requestfile(struct dcpeer *peer)
652{
653 char *buf;
654
655 if(peer->transfer->size == -1)
d3372da9 656 {
9a2d6cb8 657 if((buf = icswcstombs(peer->transfer->path, DCCHARSET, NULL)) == NULL)
d3372da9 658 {
9a2d6cb8 659 transferseterror(peer->transfer, TRNSE_NOTFOUND);
660 freedcpeer(peer);
d3372da9 661 return;
662 }
9a2d6cb8 663 /* The transfer will be restarted later from
664 * cmd_filelength when it detects that the sizes
665 * don't match. */
666 qstrf(peer->sk, "$Get %s$1|", buf);
667 return;
d3372da9 668 }
9a2d6cb8 669 if((peer->transfer->hash == NULL) && !peer->notthl)
d3372da9 670 {
9a2d6cb8 671 if(supports(peer, "adcget") && supports(peer, "tthl"))
d3372da9 672 {
9a2d6cb8 673 qstr(peer->sk, "$ADCGET");
674 sendadc(peer->sk, "tthl");
675 if((buf = getadcid(peer)) == NULL)
d3372da9 676 {
9a2d6cb8 677 transferseterror(peer->transfer, TRNSE_NOTFOUND);
d3372da9 678 freedcpeer(peer);
679 return;
680 }
9a2d6cb8 681 sendadc(peer->sk, buf);
682 free(buf);
683 sendadc(peer->sk, "0");
684 sendadc(peer->sk, "-1");
685 qstr(peer->sk, "|");
df873cd0 686 peer->fetchingtthl = 1;
9a2d6cb8 687 return;
688 }
689 }
690 if(!peer->hascurpos)
691 {
692 if(forkfilter(peer->transfer))
693 {
694 flog(LOG_WARNING, "could not fork filter for transfer %i: %s", peer->transfer->id, strerror(errno));
695 freedcpeer(peer);
696 return;
d3372da9 697 }
9a2d6cb8 698 CBREG(peer->transfer, trans_filterout, (int (*)(struct transfer *, wchar_t *, wchar_t *, void *))trresumecb, NULL, peer);
699 return;
700 }
701 if(supports(peer, "adcget"))
702 {
703 qstr(peer->sk, "$ADCGET");
704 sendadc(peer->sk, "file");
705 if((buf = getadcid(peer)) == NULL)
706 {
707 transferseterror(peer->transfer, TRNSE_NOTFOUND);
708 freedcpeer(peer);
709 return;
710 }
711 sendadc(peer->sk, buf);
712 free(buf);
713 sendadcf(peer->sk, "%i", peer->transfer->curpos);
714 sendadcf(peer->sk, "%i", peer->transfer->size - peer->transfer->curpos);
715 qstr(peer->sk, "|");
716 } else if(supports(peer, "xmlbzlist")) {
717 if((buf = icswcstombs(peer->transfer->path, "UTF-8", NULL)) == NULL)
718 {
719 transferseterror(peer->transfer, TRNSE_NOTFOUND);
720 freedcpeer(peer);
721 return;
722 }
723 qstrf(peer->sk, "$UGetBlock %i %i %s|", peer->transfer->curpos, peer->transfer->size - peer->transfer->curpos, buf);
d3372da9 724 } else {
9a2d6cb8 725 if((buf = icswcstombs(peer->transfer->path, DCCHARSET, NULL)) == NULL)
d3372da9 726 {
9a2d6cb8 727 transferseterror(peer->transfer, TRNSE_NOTFOUND);
728 freedcpeer(peer);
729 return;
d3372da9 730 }
9a2d6cb8 731 qstrf(peer->sk, "$Get %s$%i|", buf, peer->transfer->curpos + 1);
d3372da9 732 }
733}
734
735static void sendmyinfo(struct socket *sk, struct fnetnode *fn)
736{
737 struct dchub *hub;
738 char *buf;
739 struct fnetnode *cfn;
69757b8c 740 int hn1, hn2, hn3;
d3372da9 741
742 hub = fn->data;
743 qstrf(sk, "$MyINFO $ALL %s ", hub->nativenick);
744 buf = tr(icswcstombs(confgetstr("dc", "desc"), DCCHARSET, "Charset_conv_failure"), "$_|_");
745 qstrf(sk, "%s", buf);
69757b8c 746 hn1 = hn2 = hn3 = 0;
d3372da9 747 for(cfn = fnetnodes; cfn != NULL; cfn = cfn->next)
748 {
749 if((cfn->state == FNN_EST) || (cfn->state == FNN_HS))
69757b8c 750 {
751 if(cfn->regstatus == FNNS_OP)
752 hn3++;
753 else if(cfn->regstatus == FNNS_REG)
754 hn2++;
755 else
756 hn1++;
757 }
d3372da9 758 }
69757b8c 759 qstrf(sk, "<%s V:%s,M:%c,H:%i/%i/%i,S:%i>",
1c4b02cd 760 (hub->dcppemu)?"++":"Dolda",
761 (hub->dcppemu)?"0.674":VERSION,
d3372da9 762 (tcpsock == NULL)?'P':'A',
69757b8c 763 hn1, hn2, hn3,
d3372da9 764 confgetint("transfer", "slots")
765 );
766 qstrf(sk, "$ $");
767 buf = tr(icswcstombs(confgetstr("dc", "speedstring"), DCCHARSET, "Charset_conv_failure"), "$_|_");
768 qstrf(sk, "%s\x01$", buf);
769 buf = tr(icswcstombs(confgetstr("dc", "email"), DCCHARSET, "Charset_conv_failure"), "$_|_");
770 qstrf(sk, "%s$", buf);
771 qstrf(sk, "%llu$|", sharesize);
772}
773
774static void hubhandleaction(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
775{
776 struct dchub *hub;
777
778 hub = fn->data;
779 if(!strcmp(cmd, "$Lock"))
780 {
781 qstrf(sk, "$ValidateNick %s|", hub->nativenick);
782 } else if(!strcmp(cmd, "$Hello")) {
783 if(fn->state == FNN_HS)
784 {
785 qstrf(sk, "$Version 1,0091|");
786 qstrf(sk, "$GetNickList|");
787 sendmyinfo(sk, fn);
788 fnetsetstate(fn, FNN_EST);
789 } else {
790 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
791 }
792 }
793}
794
795static void cmd_lock(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
796{
797 struct dchub *hub;
798 char *key;
799 char *p;
800
801 hub = fn->data;
802 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
803 hub->extended = 1;
804 if((p = strchr(args, ' ')) != NULL)
805 *(p++) = 0;
806 if(hub->extended)
807 {
1c4b02cd 808 if(hub->dcppemu)
809 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock |");
810 else
811 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock|");
d3372da9 812 }
813 key = dcmakekey(args);
814 qstrf(sk, "$Key %s|", key);
815 free(key);
816 hubhandleaction(sk, fn, cmd, args);
817}
818
819static void cmd_hubname(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
820{
821 wchar_t *buf;
822 struct dchub *hub;
823
824 hub = fn->data;
825 if(hub->nativename == NULL)
826 free(hub->nativename);
827 hub->nativename = sstrdup(args);
828 buf = icmbstowcs(args, DCCHARSET);
829 fnetsetname(fn, (buf == NULL)?L"Hubname conv error":buf);
830 if(buf != NULL)
831 free(buf);
832 hubhandleaction(sk, fn, cmd, args);
833}
834
835static void cmd_hello(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
836{
837 wchar_t *nick;
838 struct dchub *hub;
839
840 hub = fn->data;
841 if((nick = icmbstowcs(args, DCCHARSET)) == NULL)
842 return;
843 if(strcmp(args, hub->nativenick) && (fnetfindpeer(fn, nick) == NULL))
844 fnetaddpeer(fn, nick, nick);
845 free(nick);
846 hubhandleaction(sk, fn, cmd, args);
847}
848
849static void cmd_quit(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
850{
851 wchar_t *nick;
852 struct fnetpeer *peer;
853 struct dchub *hub;
854
855 hub = fn->data;
856 if((nick = icmbstowcs(args, DCCHARSET)) == NULL)
857 return;
858 if((peer = fnetfindpeer(fn, nick)) != NULL)
859 fnetdelpeer(peer);
860 free(nick);
861 hubhandleaction(sk, fn, cmd, args);
862}
863
864static void cmd_nicklist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
865{
866 struct dchub *hub;
867 char *p;
868 wchar_t *buf;
869 struct fnetpeer *peer, *npeer;
870
871 hub = fn->data;
872 for(peer = fn->peers; peer != NULL; peer = peer->next)
873 peer->flags.b.delete = 1;
874 while((p = strstr(args, "$$")) != NULL)
875 {
876 *p = 0;
877 if((buf = icmbstowcs(args, DCCHARSET)) != NULL)
878 {
879 if((peer = fnetfindpeer(fn, buf)) == NULL)
880 peer = fnetaddpeer(fn, buf, buf);
881 else
882 peer->flags.b.delete = 0;
883 free(buf);
884 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
885 }
886 args = p + 2;
887 }
888 for(peer = fn->peers; peer != NULL; peer = npeer)
889 {
890 npeer = peer->next;
891 if(peer->flags.b.delete)
892 fnetdelpeer(peer);
893 }
894 hubhandleaction(sk, fn, cmd, args);
895}
896
897static void cmd_oplist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
898{
899 struct dchub *hub;
900 char *p;
901 wchar_t *buf;
902 struct fnetpeer *peer;
903
904 hub = fn->data;
905 for(peer = fn->peers; peer != NULL; peer = peer->next)
906 peer->flags.b.op = 0;
907 while((p = strstr(args, "$$")) != NULL)
908 {
909 *p = 0;
910 if((buf = icmbstowcs(args, DCCHARSET)) != NULL)
911 {
912 if((peer = fnetfindpeer(fn, buf)) != NULL)
913 peer->flags.b.op = 1;
914 free(buf);
915 }
916 args = p + 2;
917 }
918 hubhandleaction(sk, fn, cmd, args);
919}
920
921static void cmd_myinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
922{
923 char *p, *p2;
924 wchar_t *buf, *wp, *wp2;
925 wchar_t abuf[10];
926 struct fnetpeer *peer;
927 struct dchub *hub;
928
929 hub = fn->data;
930 p = args;
931 if(strncmp(p, "$ALL ", 5))
932 return;
933 p += 5;
934 if((p2 = strchr(p, ' ')) == NULL)
935 return;
936 *p2 = 0;
937 if((buf = icmbstowcs(p, DCCHARSET)) == NULL)
938 return;
939 if((peer = fnetfindpeer(fn, buf)) == NULL)
940 peer = fnetaddpeer(fn, buf, buf);
941 free(buf);
942 p = p2 + 1;
943 if((p2 = strstr(p, "$ $")) == NULL)
944 return;
945 *p2 = 0;
946 if((buf = icmbstowcs(p, DCCHARSET)) == NULL)
947 return;
316e9a13 948 if((wcslen(buf) > 0) && (buf[wcslen(buf) - 1] == L'>') && ((wp = wcsrchr(buf, L'<')) != NULL))
d3372da9 949 {
950 buf[wcslen(buf) - 1] = L'\0';
951 *(wp++) = L'\0';
952 if((wp2 = wcschr(wp, L' ')) != NULL)
953 {
954 *(wp2++) = L'\0';
955 fnetpeersetstr(peer, L"dc-client", wp);
956 wp = wp2;
957 do
958 {
959 if((wp2 = wcschr(wp, L',')) != NULL)
960 *(wp2++) = L'\0';
961 if(wp[1] != L':')
962 continue;
963 swprintf(abuf, 10, L"dc-tag-%lc", wp[0]);
964 fnetpeersetstr(peer, abuf, wp + 2);
965 wp = wp2;
966 } while(wp2 != NULL);
967 }
968 }
969 fnetpeersetstr(peer, L"descr", buf);
970 free(buf);
971 p = p2 + 3;
972 if((p2 = strchr(p, '$')) == NULL)
973 return;
974 *(p2 - 1) = 0;
975 if((buf = icmbstowcs(p, DCCHARSET)) == NULL)
976 return;
977 fnetpeersetstr(peer, L"dc-speed", buf);
978 free(buf);
979 p = p2 + 1;
980 if((p2 = strchr(p, '$')) == NULL)
981 return;
982 *p2 = 0;
983 if((buf = icmbstowcs(p, DCCHARSET)) == NULL)
984 return;
985 fnetpeersetstr(peer, L"email", buf);
986 free(buf);
987 p = p2 + 1;
988 if(strlen(p) < 1)
989 return;
990 fnetpeersetlnum(peer, L"share", strtoll(p, NULL, 10));
991 hubhandleaction(sk, fn, cmd, args);
992}
993
994/* I do not implement the fully in that I do not disconnect from the
995 * old hub. I do this since I believe that if the hub owner really
996 * wants to get rid of us, then it is his responsibility to disconnect
997 * us. */
998static void cmd_forcemove(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
999{
1000 struct dchub *hub;
1001 struct fnetnode *newfn;
1002 int freeargs;
1003
1004 hub = fn->data;
1005 if(strchr(args, ':') == NULL)
1006 {
1007 args = strcpy(smalloc(strlen(args) + 5), args);
1008 strcat(args, ":411");
1009 freeargs = 1;
1010 } else {
1011 freeargs = 0;
1012 }
efc05613 1013 if((newfn = fnetinitconnect(L"dc", args, NULL)) != NULL)
d3372da9 1014 {
1015 linkfnetnode(newfn);
1016 putfnetnode(newfn);
1017 }
1018 hubhandleaction(sk, fn, cmd, args);
1019 if(freeargs)
1020 free(args);
1021}
1022
1023static char *getdcpath(struct sharecache *node, size_t *retlen)
1024{
1025 char *buf, *buf2;
1026 size_t len, len2;
1027
1028 if(node->parent == NULL)
1029 return(NULL);
1030 if(node->parent == shareroot)
1031 {
1032 if((buf = icwcstombs(node->name, DCCHARSET)) == NULL)
1033 return(NULL);
1034 if(retlen != NULL)
1035 *retlen = strlen(buf);
1036 return(buf);
1037 } else {
1038 if((buf2 = icwcstombs(node->name, DCCHARSET)) == NULL)
1039 return(NULL);
1040 if((buf = getdcpath(node->parent, &len)) == NULL)
1041 {
1042 free(buf2);
1043 return(NULL);
1044 }
1045 len2 = strlen(buf2);
1046 buf = srealloc(buf, len + 1 + len2 + 1);
1047 buf[len++] = '\\';
1048 strcpy(buf + len, buf2);
1049 buf[len + len2] = 0;
1050 free(buf2);
1051 if(retlen != NULL)
1052 *retlen = len + len2;
1053 return(buf);
1054 }
1055}
1056
1057/*
1058 * This is the main share searching function for Direct Connect
1059 * peers. Feel free to optimize it if you feel the need for it. I
1060 * haven't ever seen it take any noticable CPU time anyway, so I
1061 * haven't felt that need.
1062 *
1063 * It may feel dubious to just return the directory when all terms are
1064 * satisfied rather than all the files in it, but it really benefits
1065 * everyone: Less cycles used for us, less UDP squelching for active
1066 * searchers, and less bandwidth waste for hubs when serving passive
1067 * searchers.
1068 */
1069static void cmd_search(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1070{
1071 int i, done;
1072 struct dchub *hub;
1073 char *p, *p2;
1074 char *prefix, *infix, *postfix, *buf, *buf2;
1075 struct socket *dsk;
1076 struct sockaddr_in addr;
1077 struct sharecache *node;
1078 int minsize, maxsize;
1079 int dotth, buflen;
1080 int termnum, satisfied, skipcheck;
1081 int level, tersat[32];
1082 wchar_t *terms[32];
1083 char hashtth[24];
1084
1085 hub = fn->data;
1086 if((p = strchr(args, ' ')) == NULL)
1087 return;
1088 *(p++) = 0;
1089
1090 memset(terms, 0, sizeof(terms));
1091 prefix = infix = postfix = NULL;
1092 dsk = NULL;
1093 dotth = 0;
1094
1095 if(!strncmp(args, "Hub:", 4))
1096 {
1097 if(!strcmp(cmd, "$MultiSearch"))
1098 goto out;
1099 if(!strcmp(args + 4, hub->nativenick))
1100 goto out;
1101 prefix = sprintf2("$SR %s ", hub->nativenick);
1102 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1103 postfix = sprintf2(" (%s)\005%s|", formataddress(fn->sk->remote, fn->sk->remotelen), args + 4);
1104 dsk = sk;
1105 getsock(dsk);
1106 } else {
1107 if((p2 = strchr(args, ':')) == NULL)
1108 goto out;
1109 *(p2++) = 0;
1110 addr.sin_family = AF_INET;
1111 if(!inet_aton(args, &addr.sin_addr))
1112 goto out;
1113 addr.sin_port = htons(atoi(p2));
1114 prefix = sprintf2("$SR %s ", hub->nativenick);
1115 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1116 postfix = sprintf2(" (%s)|", formataddress(fn->sk->remote, fn->sk->remotelen));
1117 netdgramconn(dsk = netdupsock(udpsock), (struct sockaddr *)&addr, sizeof(addr));
1118 }
1119
1120 minsize = maxsize = -1;
1121 if(*p == 0)
1122 goto out;
1123 if(*(p++) == 'T')
1124 minsize = 0;
1125 if(*(p++) != '?')
1126 goto out;
1127 if(*p == 0)
1128 goto out;
9d8cf743 1129 if((*(p++) == 'T') && (minsize == 0))
d3372da9 1130 {
1131 maxsize = 0;
1132 minsize = -1;
1133 }
1134 if(*(p++) != '?')
1135 goto out;
1136 if((p2 = strchr(p, '?')) == NULL)
1137 goto out;
1138 *(p2++) = 0;
1139 if(minsize == 0)
1140 minsize = atoi(p);
1141 if(maxsize == 0)
1142 maxsize = atoi(p);
1143 p = p2 + 1;
1144 if(*(p++) != '?')
1145 goto out;
1146 termnum = 0;
1147 p2 = p;
1148 done = 0;
1149 while(!done)
1150 {
1151 if((*p2 == 0) || (*p2 == '$'))
1152 {
1153 if(*p2 == 0)
1154 done = 1;
1155 else
1156 *p2 = 0;
1157 if(*p)
1158 {
1159 if(!dotth && !strncmp(p, "TTH:", 4))
1160 {
1161 dotth = 1;
1162 if((buf = base32decode(p + 4, &buflen)) == NULL)
1163 goto out;
1164 if(buflen != 24)
1165 goto out;
1166 memcpy(hashtth, buf, 24);
1167 free(buf);
1168 } else {
1169 if((terms[termnum] = icmbstowcs(p, DCCHARSET)) != NULL)
1170 termnum++;
1171 }
1172 }
1173 p = p2 + 1;
1174 if(termnum == 32)
1175 break;
1176 }
1177 p2++;
1178 }
1179
1180 node = shareroot->child;
1181 level = 0;
1182 for(i = 0; i < termnum; i++)
1183 tersat[i] = -1;
1184 satisfied = 0;
1185 while(1)
1186 {
1187 skipcheck = 0;
1188 if(node->f.b.type == FILE_REG)
1189 {
1190 if((minsize >= 0) && (node->size < minsize))
1191 skipcheck = 1;
1192 if((maxsize >= 0) && (node->size > maxsize))
1193 skipcheck = 1;
1194 }
1195 if(!skipcheck && dotth)
1196 {
1197 if((node->f.b.type != FILE_REG) || (node->f.b.hastth && memcmp(hashtth, node->hashtth, 24)))
1198 skipcheck = 1;
1199 }
1200 if(!skipcheck)
1201 {
1202 for(i = 0; i < termnum; i++)
1203 {
1204 if(tersat[i] >= 0)
1205 continue;
1206 if(wcsexists(node->name, terms[i]))
1207 {
1208 tersat[i] = level;
1209 satisfied++;
1210 } else if(node->child == NULL) {
1211 break;
1212 }
1213 }
1214 }
1215 if(!skipcheck && (satisfied == termnum))
1216 {
1217 if((buf = getdcpath(node, NULL)) != NULL)
1218 {
1219 if(node->f.b.hastth)
1220 {
1221 buf2 = base32encode(node->hashtth, 24);
1222 qstrf(dsk, "%s%s\005%i%sTTH:%.39s%s", prefix, buf, node->size, infix, buf2, postfix);
1223 free(buf2);
1224 } else {
1225 qstrf(dsk, "%s%s\005%i%s%s%s", prefix, buf, node->size, infix, hub->nativename, postfix);
1226 }
1227 free(buf);
1228 }
1229 }
1230 if((!skipcheck && (satisfied == termnum)) || (node->child == NULL))
1231 {
1232 while(node->next == NULL)
1233 {
1234 if((node = node->parent) == shareroot)
1235 break;
1236 level--;
1237 }
1238 if(node == shareroot)
1239 break;
1240 for(i = 0; i < termnum; i++)
1241 {
1242 if(tersat[i] >= level)
1243 {
1244 tersat[i] = -1;
1245 satisfied--;
1246 }
1247 }
1248 node = node->next;
1249 } else {
1250 node = node->child;
1251 level++;
1252 }
1253 }
1254
1255 hubhandleaction(sk, fn, cmd, args);
1256
1257 out:
1258 if(dsk != NULL)
1259 putsock(dsk);
1260 if(prefix != NULL)
1261 free(prefix);
1262 if(infix != NULL)
1263 free(infix);
1264 if(postfix != NULL)
1265 free(postfix);
1266 for(i = 0; (i < 32) && (terms[i] != NULL); i++)
1267 free(terms[i]);
1268}
1269
1270static void cmd_connecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1271{
1272 char *p;
1273 struct dchub *hub;
1274 struct socket *newsk;
1275 struct sockaddr_in addr;
1276
1277 hub = fn->data;
1278 if((p = strchr(args, ' ')) == NULL)
1279 return;
1280 *(p++) = 0;
1281 if(strcmp(args, hub->nativenick))
1282 return;
1283 addr.sin_family = AF_INET;
1284 args = p;
1285 if((p = strchr(args, ':')) == NULL)
1286 return;
1287 *(p++) = 0;
1288 addr.sin_port = htons(atoi(p));
1289 if(!inet_aton(args, &addr.sin_addr))
1290 return;
1291 newsk = netcsconn((struct sockaddr *)&addr, sizeof(addr), (void (*)(struct socket *, int, void *))peerconnect, fn);
1292 getfnetnode(fn);
1293 hubhandleaction(sk, fn, cmd, args);
1294}
1295
1296static void sendctm(struct socket *sk, char *nick)
1297{
1298 struct sockaddr *addr;
1299 socklen_t addrlen;
1300
1301 if(tcpsock == NULL)
1302 return;
1303 if(sockgetremotename(tcpsock, &addr, &addrlen) < 0)
1304 return;
1305 if(addr->sa_family == AF_INET)
1306 qstrf(sk, "$ConnectToMe %s %s|", nick, formataddress(addr, addrlen));
1307 else
1308 flog(LOG_WARNING, "Direct Connect TCP socket is suddenly not AF_INET, but %i", addr->sa_family);
1309 free(addr);
1310}
1311
1312static void cmd_revconnecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1313{
1314 struct dchub *hub;
1315 char *p;
1316
1317 hub = fn->data;
1318 if((p = strchr(args, ' ')) == NULL)
1319 return;
1320 *(p++) = 0;
1321 if(strcmp(p, hub->nativenick))
1322 return;
1323 sendctm(sk, args);
1324 expectpeer(args, fn);
1325 hubhandleaction(sk, fn, cmd, args);
1326}
1327
1328static void cmd_getnetinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1329{
1330 struct dchub *hub;
1331 struct fnetnode *node;
1332 int numhubs;
1333
1334 hub = fn->data;
1335 numhubs = 0;
1336 for(node = fnetnodes; node != NULL; node = node->next)
1337 {
1338 if(node->state == FNN_EST)
1339 numhubs++;
1340 }
1341 qstrf(sk, "$NetInfo %i$%i$%c$0|", confgetint("transfer", "slots"), numhubs, (tcpsock == NULL)?'P':'A');
1342 hubhandleaction(sk, fn, cmd, args);
1343}
1344
1345static void cmd_to(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1346{
1347 struct dchub *hub;
1348 char *p, *p2;
1349
1350 hub = fn->data;
1351 p = args;
1352 if((p2 = strchr(p, ' ')) == NULL)
1353 return;
1354 *(p2++) = 0;
1355 p = p2;
1356 if((p2 = strchr(p, ' ')) == NULL)
1357 return;
1358 *(p2++) = 0;
1359 if(strcmp(p, "From:"))
1360 return;
1361 p = p2;
1362 if((p2 = strstr(p, " $")) == NULL)
1363 return;
1364 *p2 = 0;
1365 p2 += 2;
1366 hubrecvchat(fn->sk, fn, p, p2);
1367 hubhandleaction(sk, fn, cmd, args);
1368}
1369
1370static void cmd_sr(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1371{
1372 struct dchub *hub;
d86b7a9f 1373 char *p, *p2, *buf;
d3372da9 1374 char *nick, *filename, *hubname;
1375 int size, slots;
d86b7a9f 1376 size_t buflen;
d3372da9 1377 struct srchres *sr;
1378 wchar_t *wnick, *wfile;
1379
1380 hub = fn->data;
1381 nick = p = args;
1382 if((p2 = strchr(p, ' ')) == NULL)
1383 return;
1384 *p2 = 0;
1385 p = p2 + 1;
1386 filename = p;
1387 if((p2 = strchr(p, 5)) == NULL)
1388 return;
1389 *p2 = 0;
1390 p = p2 + 1;
1391 if((p2 = strchr(p, ' ')) == NULL)
1392 return;
1393 *p2 = 0;
1394 size = atoi(p);
1395 p = p2 + 1;
1396 if((p2 = strchr(p, '/')) == NULL)
1397 return;
1398 *p2 = 0;
1399 slots = atoi(p);
1400 p = p2 + 1;
1401 if((p2 = strchr(p, 5)) == NULL)
1402 return;
1403 p = p2 + 1;
1404 hubname = p;
1405 if((p2 = strstr(p, " (")) == NULL)
1406 return;
1407 *p2 = 0;
1408 if((wnick = icmbstowcs(nick, DCCHARSET)) == NULL)
1409 return;
1410 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
1411 {
1412 free(wnick);
1413 return;
1414 }
1415 sr = newsrchres(&dcnet, wfile, wnick);
1416 if(sr->peernick != NULL)
1417 free(sr->peernick);
1418 sr->peernick = swcsdup(wnick);
1419 sr->size = size;
1420 sr->slots = slots;
1421 free(wfile);
1422 free(wnick);
d86b7a9f 1423 if(!strncmp(hubname, "TTH:", 4))
1424 {
1425 if((buf = base32decode(hubname + 4, &buflen)) != NULL)
1426 {
1427 if(buflen == 24)
1428 sr->hash = newhash(L"TTH", 24, buf);
1429 free(buf);
1430 }
1431 }
d3372da9 1432 getfnetnode(sr->fn = fn);
1433 submitsrchres(sr);
1434 freesrchres(sr);
1435 hubhandleaction(sk, fn, cmd, args);
1436}
1437
1438static void cmd_usercommand(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1439{
1440 /* Do nothing for now. */
1441}
1442
48509089 1443static void cmd_getpass(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1444{
1445 struct dchub *hub;
1c4b02cd 1446 wchar_t *pw;
48509089 1447 char *mbspw;
1448
1449 hub = fn->data;
1c4b02cd 1450 pw = wpfind(fn->args, L"password");
1451 if((pw == NULL) || ((mbspw = icwcstombs(pw, DCCHARSET)) == NULL))
48509089 1452 {
1453 killfnetnode(fn);
1454 return;
1455 }
1456 qstrf(sk, "$MyPass %s|", mbspw);
1457 free(mbspw);
fcd0627b 1458 fn->regstatus = FNNS_REG;
48509089 1459 hubhandleaction(sk, fn, cmd, args);
1460}
1461
c9b3ad74 1462static void cmd_logedin(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1463{
1464 struct dchub *hub;
1465
1466 hub = fn->data;
fcd0627b 1467 fn->regstatus = FNNS_OP;
c9b3ad74 1468 hubhandleaction(sk, fn, cmd, args);
1469}
1470
d3372da9 1471static void cmd_mynick(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1472{
9a2d6cb8 1473 struct dcexppeer *expect;
1c4b02cd 1474 struct dchub *hub;
9a2d6cb8 1475
d3372da9 1476 if(peer->nativename != NULL)
1477 free(peer->nativename);
1478 peer->nativename = sstrdup(args);
1479 if(peer->wcsname != NULL)
1480 free(peer->wcsname);
1481 if((peer->wcsname = icmbstowcs(peer->nativename, DCCHARSET)) == NULL)
1482 {
1483 freedcpeer(peer);
1484 return;
1485 }
9a2d6cb8 1486 if(peer->accepted)
1487 {
1488 for(expect = expected; expect != NULL; expect = expect->next)
1489 {
1490 if(!strcmp(expect->nick, args))
1491 break;
1492 }
1493 if(expect == NULL)
1494 {
1495 peer->fn = NULL;
1496 } else {
1c4b02cd 1497 hub = expect->fn->data;
9a2d6cb8 1498 peer->fn = expect->fn;
1499 getfnetnode(peer->fn);
1c4b02cd 1500 peer->dcppemu = hub->dcppemu;
9a2d6cb8 1501 freeexppeer(expect);
1502 }
1503 }
d3372da9 1504}
1505
1506static void cmd_direction(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1507{
1508 char *p;
9a2d6cb8 1509 int mydir;
1510 struct transfer *transfer;
d3372da9 1511
1512 if((p = strchr(args, ' ')) == NULL)
1513 return;
1514 *p = 0;
1515 if(!strcmp(args, "Upload"))
9a2d6cb8 1516 mydir = TRNSD_DOWN;
d3372da9 1517 if(!strcmp(args, "Download"))
9a2d6cb8 1518 mydir = TRNSD_UP;
1519 if(peer->accepted)
1520 {
1521 if((peer->transfer == NULL) || (mydir != peer->direction))
1522 {
1523 freedcpeer(peer);
1524 return;
1525 }
1b14d3d8 1526 if(peer->direction == TRNSD_DOWN)
1527 requestfile(peer);
9a2d6cb8 1528 } else {
1529 if(peer->wcsname == NULL)
1530 {
1531 freedcpeer(peer);
1532 return;
1533 }
1534 peer->direction = mydir;
1535 if(peer->direction == TRNSD_UP)
1536 {
1537 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1538 } else {
1539 if((transfer = finddownload(peer->wcsname)) == NULL)
1540 {
1541 freedcpeer(peer);
1542 return;
1543 }
1544 transferattach(transfer, &dctransfer, peer);
1545 transfersetstate(transfer, TRNS_HS);
1546 }
1547 transfersetnick(transfer, peer->wcsname);
1548 peer->transfer = transfer;
1549 if(peer->extended)
1550 sendsupports(peer);
1551 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1552 if(peer->key != NULL)
1553 qstrf(sk, "$Key %s|", peer->key);
1554 if(peer->direction == TRNSD_DOWN)
1555 requestfile(peer);
1556 }
d3372da9 1557}
1558
1559static void cmd_peerlock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1560{
9a2d6cb8 1561 char *p, *key;
1562 struct transfer *transfer;
d3372da9 1563
1564 if((p = strchr(args, ' ')) == NULL)
1565 return;
1566 *p = 0;
1567 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
1568 peer->extended = 1;
9a2d6cb8 1569 key = dcmakekey(args);
1570 if(peer->accepted)
1571 {
1572 if(peer->wcsname == NULL)
1573 {
1574 freedcpeer(peer);
1575 return;
1576 }
1577 sendmynick(peer);
1578 sendpeerlock(peer);
1579 if(peer->extended)
1580 sendsupports(peer);
1581 if((transfer = finddownload(peer->wcsname)) == NULL)
1582 {
1583 peer->direction = TRNSD_UP;
1584 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1585 } else {
1586 peer->direction = TRNSD_DOWN;
1587 transferattach(transfer, &dctransfer, peer);
1588 transfersetstate(transfer, TRNS_HS);
1589 }
1590 transfersetnick(transfer, peer->wcsname);
1591 peer->transfer = transfer;
1592 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1593 qstrf(sk, "$Key %s|", key);
1594 } else {
1595 if(peer->key != NULL)
1596 free(peer->key);
1597 peer->key = key;
1598 }
d3372da9 1599}
1600
1601static void cmd_key(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1602{
9a2d6cb8 1603 /* NOP */
1604}
1605
1606static void startdl(struct dcpeer *peer)
1607{
1e9d82b1 1608 if(peer->timeout != NULL)
1609 canceltimer(peer->timeout);
9a2d6cb8 1610 peer->state = PEER_TRNS;
1611 transferstartdl(peer->transfer, peer->sk);
1612 peer->sk->readcb = (void (*)(struct socket *, void *))transread;
1613 peer->sk->errcb = (void (*)(struct socket *, int, void *))transerr;
1614}
1615
1616static void startul(struct dcpeer *peer)
1617{
1e9d82b1 1618 if(peer->timeout != NULL)
1619 canceltimer(peer->timeout);
9a2d6cb8 1620 peer->state = PEER_TRNS;
1621 transferstartul(peer->transfer, peer->sk);
1622 peer->sk->writecb = (void (*)(struct socket *, void *))transwrite;
d3372da9 1623}
1624
1625static void cmd_filelength(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1626{
1627 int size;
1fc81821 1628 struct transfer *transfer;
d3372da9 1629
1630 if(peer->transfer == NULL)
1631 {
1632 freedcpeer(peer);
1633 return;
1634 }
1635 size = atoi(args);
9a2d6cb8 1636 if(peer->transfer->size != size)
d3372da9 1637 {
d3372da9 1638 transfersetsize(peer->transfer, size);
1fc81821 1639 transfer = peer->transfer;
d3372da9 1640 freedcpeer(peer);
1fc81821 1641 trytransferbypeer(transfer->fnet, transfer->peerid);
d3372da9 1642 return;
1643 }
9a2d6cb8 1644 startdl(peer);
1645 qstr(peer->sk, "$Send|");
d3372da9 1646}
1647
1648static void cmd_error(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1649{
df873cd0 1650 if(peer->fetchingtthl)
1651 {
1652 peer->fetchingtthl = 0;
1653 peer->notthl = 1;
1654 requestfile(peer);
1655 return;
1656 }
d3372da9 1657 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1658 {
1659 transferseterror(peer->transfer, TRNSE_NOTFOUND);
1660 resettransfer(peer->transfer);
1661 return;
1662 }
1663 freedcpeer(peer);
1664}
1665
1666static void cmd_maxedout(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1667{
1668 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1669 {
1670 transferseterror(peer->transfer, TRNSE_NOSLOTS);
1671 resettransfer(peer->transfer);
1672 return;
1673 }
1674 freedcpeer(peer);
1675}
1676
1677static struct
1678{
1679 char *name;
1680 char **file;
1681 void (*func)(void);
1682} lists[] =
1683{
1684 {"MyList.DcLst", &hmlistname, updatehmlist},
1685 {"files.xml", &xmllistname, updatexmllist},
1686 {"files.xml.bz2", &xmlbz2listname, updatexmlbz2list},
1687 {NULL, NULL}
1688};
1689
1690static int openfilelist(char *name)
1691{
1692 int i, fd;
1693 int errnobak;
1694
1695 for(i = 0; lists[i].name != NULL; i++)
1696 {
1697 if(!strcmp(name, lists[i].name))
1698 break;
1699 }
1700 errno = 0;
1701 if(lists[i].name == NULL)
1702 return(-1);
1703 fd = -1;
1704 if((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0))
1705 lists[i].func();
1706 if((fd < 0) && ((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0)))
1707 {
1708 errnobak = errno;
1709 flog(LOG_ERR, "could not open filelist tempfile: %s", strerror(errno));
1710 errno = errnobak;
1711 return(-1);
1712 }
1713 return(fd);
1714}
1715
1716static struct sharecache *findbytth(char *tth32)
1717{
1718 char *buf;
1719 size_t buflen;
1720 struct sharecache *node;
1721
1722 if((buf = base32decode(tth32, &buflen)) == NULL)
1723 return(NULL);
1724 if(buflen != 24)
1725 {
1726 free(buf);
1727 return(NULL);
1728 }
1729 for(node = shareroot->child; node != NULL; node = nextscnode(node))
1730 {
1731 if(node->f.b.hastth && !memcmp(node->hashtth, buf, 24))
1732 break;
1733 }
1734 free(buf);
1735 return(node);
1736}
1737
1738static struct sharecache *resdcpath(char *path, char *charset, char sep)
1739{
1740 struct sharecache *node;
1741 char *p, *p2;
1742
1743 node = shareroot;
1744 p = path;
1745 while(p != NULL)
1746 {
1747 if((p2 = strchr(p, sep)) != NULL)
1748 *(p2++) = 0;
1749 if((node = findcache(node, icsmbstowcs(p, charset, L""))) == NULL)
1750 return(NULL);
1751 p = p2;
1752 }
1753 return(node);
1754}
1755
1756static void cmd_get(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1757{
1758 int offset;
1759 char *p, *buf;
1760 wchar_t *buf2;
1761 struct sharecache *node;
1762 struct socket *lesk;
1763 int fd;
1764 struct stat sb;
1765
1766 if(peer->transfer == NULL)
1767 {
1768 freedcpeer(peer);
1769 return;
1770 }
1771 if((p = strchr(args, '$')) == NULL)
1772 {
1773 freedcpeer(peer);
1774 return;
1775 }
1776 *(p++) = 0;
1777 if((offset = (atoi(p) - 1)) < 0)
1778 {
1779 freedcpeer(peer);
1780 return;
1781 }
1782 if(((fd = openfilelist(args)) < 0) && (errno != 0))
1783 {
1784 qstr(sk, "$Error Could not send file list|");
1785 freedcpeer(peer);
1786 return;
1787 } else if(fd >= 0) {
1788 if((buf2 = icsmbstowcs(args, DCCHARSET, NULL)) != NULL)
1789 transfersetpath(peer->transfer, buf2);
f00d7432 1790 peer->transfer->flags.b.minislot = 1;
d3372da9 1791 }
1792 if(fd < 0)
1793 {
d3372da9 1794 if((node = resdcpath(args, DCCHARSET, '\\')) == NULL)
1795 {
1796 qstrf(sk, "$Error File not in share|");
1797 freedcpeer(peer);
1798 return;
1799 }
1800 if((fd = opensharecache(node)) < 0)
1801 {
1802 qstrf(sk, "$Error %s|", strerror(errno));
1803 freedcpeer(peer);
1804 return;
1805 }
1806 buf = getfspath(node);
1807 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1808 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1809 else
1810 transfersetpath(peer->transfer, buf2);
1811 free(buf);
1812 }
1813 if(fstat(fd, &sb) < 0)
1814 {
1815 close(fd);
1816 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1817 qstrf(sk, "$Error|");
1818 freedcpeer(peer);
1819 return;
1820 }
f00d7432 1821 if(sb.st_size < 65536)
1822 peer->transfer->flags.b.minislot = 1;
1823 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
565006d1 1824 close(fd);
f00d7432 1825 qstr(sk, "$MaxedOut|");
1826 freedcpeer(peer);
1827 return;
1828 }
d3372da9 1829 if((offset != 0) && (lseek(fd, offset, SEEK_SET) < 0))
1830 {
1831 close(fd);
1832 qstrf(sk, "$Error Offset out of range|");
1833 freedcpeer(peer);
1834 return;
1835 }
1836 lesk = wrapsock(fd);
1837 transferprepul(peer->transfer, sb.st_size, offset, -1, lesk);
1838 putsock(lesk);
1839 qstrf(sk, "$FileLength %i|", peer->transfer->size);
d3372da9 1840}
1841
1842static void cmd_send(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1843{
1844 if(peer->transfer == NULL)
1845 {
1846 freedcpeer(peer);
1847 return;
1848 }
1849 if(peer->transfer->localend == NULL)
1850 {
1851 freedcpeer(peer);
1852 return;
1853 }
1854 peer->ptclose = 1;
9a2d6cb8 1855 startul(peer);
d3372da9 1856}
1857
1858static void cmd_supports(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1859{
1860 int i;
1861 char *p, *p2;
1862 char **arr;
1863 size_t arrsize, arrdata;
1864
1865 if(peer->supports != NULL)
1866 {
1867 for(i = 0; peer->supports[i] != NULL; i++)
1868 free(peer->supports[i]);
1869 free(peer->supports);
1870 }
1871 arr = NULL;
1872 arrsize = arrdata = 0;
1873 p = args;
1874 do
1875 {
1876 if((p2 = strchr(p, ' ')) != NULL)
1877 *(p2++) = 0;
1878 if(*p == 0)
1879 continue;
1880 addtobuf(arr, sstrdup(p));
1881 } while((p = p2) != NULL);
1882 addtobuf(arr, NULL);
1883 peer->supports = arr;
d3372da9 1884}
1885
1886static void cmd_getblock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1887{
1888 int fd;
1889 char *p, *p2;
1890 int start, numbytes;
1891 char *charset, *buf;
1892 wchar_t *buf2;
1893 struct sharecache *node;
1894 struct stat sb;
1895 struct socket *lesk;
1896
1897 if(peer->transfer == NULL)
1898 {
1899 freedcpeer(peer);
1900 return;
1901 }
1902 p = args;
1903 if((p2 = strchr(p, ' ')) == NULL)
1904 {
1905 freedcpeer(peer);
1906 return;
1907 }
1908 *(p2++) = 0;
1909 start = atoi(p);
1910 p = p2;
1911 if((p2 = strchr(p, ' ')) == NULL)
1912 {
1913 freedcpeer(peer);
1914 return;
1915 }
1916 *(p2++) = 0;
1917 numbytes = atoi(p);
1918 p = p2;
1919 if(!strcmp(cmd, "$UGetBlock") || !strcmp(cmd, "$UGetZBlock"))
1920 charset = "UTF-8";
1921 else
1922 charset = DCCHARSET;
1923 if(!strcmp(cmd, "$GetZBlock") || !strcmp(cmd, "$UGetZBlock"))
1924 initcompress(peer, CPRS_ZLIB);
1925 if(((fd = openfilelist(p)) < 0) && (errno != 0))
1926 {
1927 qstr(sk, "$Error Could not send file list|");
1928 return;
1929 } else if(fd >= 0) {
1930 if((buf2 = icsmbstowcs(args, charset, NULL)) != NULL)
1931 transfersetpath(peer->transfer, buf2);
f00d7432 1932 peer->transfer->flags.b.minislot = 1;
d3372da9 1933 }
1934 if(fd < 0)
1935 {
d3372da9 1936 if((node = resdcpath(p, charset, '\\')) == NULL)
1937 {
1938 qstr(sk, "$Error File not in cache|");
1939 return;
1940 }
1941 if((fd = opensharecache(node)) < 0)
1942 {
1943 qstrf(sk, "$Error %s|", strerror(errno));
1944 return;
1945 }
1946 buf = getfspath(node);
1947 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1948 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1949 else
1950 transfersetpath(peer->transfer, buf2);
1951 free(buf);
1952 }
1953 if(fstat(fd, &sb) < 0)
1954 {
1955 close(fd);
1956 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1957 qstr(sk, "$Error|");
1958 return;
1959 }
f00d7432 1960 if(sb.st_size < 65536)
1961 peer->transfer->flags.b.minislot = 1;
1962 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
565006d1 1963 close(fd);
f00d7432 1964 qstr(sk, "$MaxedOut|");
1965 return;
1966 }
d3372da9 1967 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
1968 {
1969 close(fd);
1970 qstr(sk, "$Error Offset out of range|");
1971 return;
1972 }
1973 if((numbytes < 0) || (start + numbytes > sb.st_size))
1974 numbytes = sb.st_size - start;
1975 lesk = wrapsock(fd);
1976 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
1977 putsock(lesk);
1978 qstrf(sk, "$Sending %i|", numbytes);
9a2d6cb8 1979 startul(peer);
d3372da9 1980}
1981
1982static void cmd_adcget(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1983{
1984 int i;
1985 char **argv, *buf;
1986 int start, numbytes;
1987 struct sharecache *node;
1988 struct stat sb;
1989 struct socket *lesk;
1990 wchar_t *wbuf;
1991 int fd;
1992
1993 if(peer->transfer == NULL)
1994 {
1995 freedcpeer(peer);
1996 return;
1997 }
1998 if((argv = parseadc(args)) == NULL)
1999 {
2000 freedcpeer(peer);
2001 return;
2002 }
2003 if(parrlen(argv) < 4)
2004 {
2005 freedcpeer(peer);
2006 goto out;
2007 }
2008 start = atoi(argv[2]);
2009 numbytes = atoi(argv[3]);
2010 node = NULL;
2011 fd = -1;
2012 if(((fd = openfilelist(argv[1])) < 0) && (errno != 0))
2013 {
2014 qstr(sk, "$Error Could not send file list|");
2015 goto out;
2016 } else if(fd >= 0) {
2017 if((wbuf = icsmbstowcs(argv[1], "UTF-8", NULL)) != NULL)
2018 transfersetpath(peer->transfer, wbuf);
f00d7432 2019 peer->transfer->flags.b.minislot = 1;
d3372da9 2020 }
2021 if(fd < 0)
2022 {
d3372da9 2023 if(!strncmp(argv[1], "TTH/", 4))
2024 {
2025 if((node = findbytth(argv[1] + 4)) == NULL)
2026 {
2027 qstr(sk, "$Error File not in cache|");
2028 goto out;
2029 }
2030 } else {
9a2d6cb8 2031 if((node = resdcpath((argv[1][0] == '/')?(argv[1] + 1):(argv[1]), "UTF-8", '/')) == NULL)
d3372da9 2032 {
2033 qstr(sk, "$Error File not in cache|");
2034 goto out;
2035 }
2036 }
2037 if((fd = opensharecache(node)) < 0)
2038 {
2039 qstrf(sk, "$Error %s|", strerror(errno));
2040 goto out;
2041 }
2042 buf = getfspath(node);
2043 if((wbuf = icsmbstowcs(buf, NULL, NULL)) == NULL)
2044 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
2045 else
2046 transfersetpath(peer->transfer, wbuf);
2047 free(buf);
2048 }
2049 if(!strcmp(argv[0], "file"))
2050 {
2051 for(i = 4; argv[i] != NULL; i++)
2052 {
2053 if(!strcmp(argv[i], "ZL1"))
2054 initcompress(peer, CPRS_ZLIB);
2055 }
2056 if(fstat(fd, &sb) < 0)
2057 {
2058 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
2059 qstr(sk, "$Error|");
2060 goto out;
2061 }
f00d7432 2062 if(sb.st_size < 65536)
2063 peer->transfer->flags.b.minislot = 1;
2064 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
2065 qstr(sk, "$MaxedOut|");
2066 goto out;
2067 }
d3372da9 2068 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
2069 {
2070 qstr(sk, "$Error Offset out of range|");
2071 goto out;
2072 }
2073 if((numbytes < 0) || (start + numbytes > sb.st_size))
2074 numbytes = sb.st_size - start;
2075 lesk = wrapsock(fd);
2076 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2077 putsock(lesk);
2078 fd = -1;
2079 qstr(sk, "$ADCSND");
2080 sendadc(sk, "file");
2081 sendadc(sk, argv[1]);
2082 sendadcf(sk, "%i", start);
2083 sendadcf(sk, "%i", numbytes);
2084 if(peer->compress == CPRS_ZLIB)
2085 sendadc(sk, "ZL1");
2086 qstr(sk, "|");
9a2d6cb8 2087 startul(peer);
d3372da9 2088 } else if(!strcmp(argv[0], "tthl")) {
2089 /*
2090 * XXX: Implement full TTHL support.
2091 *
2092 * In the meantime, this is better than nothing, since it at
2093 * least allows fetching of the TTH root if it isn't already
2094 * known.
2095 */
2096 if(node == NULL)
2097 {
2098 qstr(sk, "$Error no TTHL data for virtual files|");
2099 goto out;
2100 }
2101 qstr(sk, "$ADCSND");
2102 sendadc(sk, "tthl");
2103 sendadc(sk, argv[1]);
2104 sendadc(sk, "0");
2105 sendadc(sk, "24");
2106 qstr(sk, "|");
2107 sockqueue(sk, node->hashtth, 24);
2108 } else {
2109 qstr(sk, "$Error Namespace not implemented|");
2110 goto out;
2111 }
d3372da9 2112
2113 out:
2114 if(fd >= 0)
2115 close(fd);
2116 freeparr(argv);
2117}
2118
9a2d6cb8 2119static void handletthl(struct dcpeer *peer)
2120{
2121 char buf[24];
2122
2123 while(peer->inbufdata >= 24)
2124 {
2125 pushtigertree(&peer->tth, peer->inbuf);
2126 memmove(peer->inbuf, peer->inbuf + 24, peer->inbufdata -= 24);
e52006fe 2127 peer->curread += 24;
9a2d6cb8 2128 }
e52006fe 2129 if(peer->curread >= peer->totalsize)
9a2d6cb8 2130 {
1e9d82b1 2131 if(peer->timeout == NULL)
2132 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
9a2d6cb8 2133 peer->state = PEER_CMD;
2134 synctigertree(&peer->tth);
2135 restigertree(&peer->tth, buf);
2136 transfersethash(peer->transfer, newhash(L"TTH", 24, buf));
2137 requestfile(peer);
2138 }
2139}
2140
2141static void cmd_adcsnd(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2142{
2143 char **argv;
2144 int start, numbytes;
2145
2146 if(peer->transfer == NULL)
2147 {
2148 freedcpeer(peer);
2149 return;
2150 }
2151 if((argv = parseadc(args)) == NULL)
2152 {
2153 freedcpeer(peer);
2154 return;
2155 }
2156 if(parrlen(argv) < 4)
2157 {
2158 freedcpeer(peer);
2159 goto out;
2160 }
2161 start = atoi(argv[2]);
2162 numbytes = atoi(argv[3]);
2163 if(!strcmp(argv[0], "tthl"))
2164 {
2165 if((start != 0) || (numbytes % 24 != 0))
2166 {
2167 /* Weird. Bail out. */
2168 freedcpeer(peer);
2169 goto out;
2170 }
1e9d82b1 2171 if(peer->timeout != NULL)
2172 canceltimer(peer->timeout);
9a2d6cb8 2173 peer->state = PEER_TTHL;
2174 peer->totalsize = numbytes;
2175 peer->curread = 0;
df873cd0 2176 peer->fetchingtthl = 0;
9a2d6cb8 2177 inittigertree(&peer->tth);
2178 handletthl(peer);
2179 } else if(!strcmp(argv[0], "file")) {
2180 if(start != peer->transfer->curpos)
2181 {
2182 freedcpeer(peer);
2183 goto out;
2184 }
2185 if(start + numbytes != peer->transfer->size)
2186 {
2187 transfersetsize(peer->transfer, start + numbytes);
2188 freedcpeer(peer);
2189 goto out;
2190 }
2191 startdl(peer);
e52006fe 2192 if(peer->inbufdata > 0)
2193 {
2194 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2195 peer->inbufdata = 0;
2196 transread(sk, peer);
2197 }
9a2d6cb8 2198 } else {
2199 /* We certainly didn't request this...*/
2200 freedcpeer(peer);
2201 goto out;
2202 }
2203
2204 out:
2205 freeparr(argv);
2206}
2207
2208static void cmd_sending(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2209{
2210 int numbytes;
2211
2212 if(peer->transfer == NULL)
2213 {
2214 freedcpeer(peer);
2215 return;
2216 }
2217 numbytes = atoi(args);
2218 if(peer->transfer->size - peer->transfer->curpos != numbytes)
2219 {
2220 transfersetsize(peer->transfer, peer->transfer->curpos + numbytes);
2221 freedcpeer(peer);
2222 return;
2223 }
2224 startdl(peer);
0d8c93cb 2225 if(peer->inbufdata > 0)
2226 {
2227 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2228 peer->inbufdata = 0;
2229 transread(sk, peer);
2230 }
9a2d6cb8 2231}
2232
d3372da9 2233/*
2234Hub skeleton:
2235static void cmd_(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
2236{
2237 struct dchub *hub;
2238
2239 hub = fn->data;
2240 hubhandleaction(sk, fn, cmd, args);
2241}
2242
2243Peer skeleton:
2244static void cmd_(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2245{
d3372da9 2246}
2247
2248*/
2249
2250static int hubreqconn(struct fnetpeer *peer)
2251{
2252 struct dchub *hub;
2253 char *mbsnick;
2254
2255 if((peer->fn->state != FNN_EST) || (peer->fn->fnet != &dcnet))
2256 {
2257 errno = EINVAL;
2258 return(1);
2259 }
2260 if((hub = peer->fn->data) == NULL)
2261 {
2262 errno = EFAULT;
2263 return(1);
2264 }
2265 if((mbsnick = icwcstombs(peer->id, DCCHARSET)) == NULL)
2266 return(1); /* Shouldn't happen, of course, but who knows... */
2267 if(tcpsock != NULL)
2268 {
2269 sendctm(peer->fn->sk, mbsnick);
2270 expectpeer(mbsnick, peer->fn);
2271 } else {
2272 qstrf(peer->fn->sk, "$RevConnectToMe %s %s|", hub->nativenick, mbsnick);
2273 }
2274 free(mbsnick);
2275 return(0);
2276}
2277
2278static int hubsendchat(struct fnetnode *fn, int public, wchar_t *to, wchar_t *string)
2279{
2280 struct dchub *hub;
2281 char *mbsstring, *mbsto;
2282
2283 hub = fn->data;
2284 if((mbsto = icwcstombs(to, DCCHARSET)) == NULL)
2285 {
2286 errno = EILSEQ;
2287 return(1);
2288 }
2289 if((mbsstring = icwcstombs(string, DCCHARSET)) == NULL)
2290 {
2291 errno = EILSEQ;
2292 return(1);
2293 }
2294 if((strchr(mbsto, '|') != NULL) || (strchr(mbsto, ' ') != NULL))
2295 {
2296 free(mbsto);
2297 free(mbsstring);
2298 errno = ESRCH;
2299 return(1);
2300 }
2301 if(strchr(mbsstring, '|') != NULL)
2302 {
2303 free(mbsto);
2304 free(mbsstring);
2305 errno = EILSEQ;
2306 return(1);
2307 }
2308 if(public)
2309 {
2310 if(*to == L'\0')
2311 {
2312 qstrf(fn->sk, "<%s> %s|", hub->nativenick, mbsstring);
2313 } else {
2314 qstrf(fn->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2315 }
2316 } else {
2317 qstrf(fn->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2318 }
2319 free(mbsto);
2320 free(mbsstring);
2321 return(0);
2322}
2323
2324static void findsizelimit(struct sexpr *sexpr, int *min, int *max)
2325{
2326 int minl, maxl, minr, maxr, retmin, retmax;
2327
2328 switch(sexpr->op)
2329 {
2330 case SOP_AND:
2331 findsizelimit(sexpr->l, &minl, &maxl);
2332 findsizelimit(sexpr->r, &minr, &maxr);
2333 retmin = (minl > minr)?minl:minr;
2334 if((maxl != -1) && (maxr != -1))
2335 retmax = (maxl < maxr)?maxl:maxr;
2336 else if(maxl != -1)
2337 retmax = maxl;
2338 else if(maxr != -1)
2339 retmax = maxr;
2340 else
2341 retmax = -1;
2342 break;
2343 case SOP_OR:
2344 findsizelimit(sexpr->l, &minl, &maxl);
2345 findsizelimit(sexpr->r, &minr, &maxr);
2346 retmin = (minl < minr)?minl:minr;
2347 if((maxl == -1) || (maxr == -1))
2348 retmax = -1;
2349 else
2350 retmax = (maxl > maxr)?maxl:maxr;
2351 break;
2352 case SOP_NOT:
2353 findsizelimit(sexpr->l, &minl, &maxl);
2354 if((minl == 0) && (maxl == -1)) /* Interval is unspecified */
2355 {
2356 retmin = 0;
2357 retmax = -1;
2358 } else if((minl == 0) && (maxl != -1)) {
2359 retmin = maxl + 1;
2360 retmax = -1;
2361 } else if((minl != 0) && (maxl == -1)) {
2362 retmin = 0;
2363 retmax = minl - 1;
2364 } else { /* This would yield two seperate intervals, which DC cannot handle */
2365 retmin = 0;
2366 retmax = -1;
2367 }
2368 case SOP_SIZELT:
2369 retmin = 0;
2370 retmax = sexpr->d.n - 1;
2371 break;
2372 case SOP_SIZEEQ:
2373 retmin = sexpr->d.n;
2374 retmax = sexpr->d.n;
2375 break;
2376 case SOP_SIZEGT:
2377 retmin = sexpr->d.n + 1;
2378 retmax = -1;
2379 break;
2380 default:
2381 retmin = 0;
2382 retmax = -1;
2383 break;
2384 }
2385 if(min != NULL)
2386 *min = retmin;
2387 if(max != NULL)
2388 *max = retmax;
2389}
2390
9d8cf743 2391static struct hash *findsehash(struct sexpr *sexpr)
2392{
2393 struct hash *h1, *h2;
2394
2395 switch(sexpr->op)
2396 {
2397 case SOP_AND:
2398 if((h1 = findsehash(sexpr->l)) != NULL)
2399 return(h1);
2400 if((h1 = findsehash(sexpr->r)) != NULL)
2401 return(h1);
2402 break;
2403 case SOP_OR:
2404 h1 = findsehash(sexpr->l);
2405 h2 = findsehash(sexpr->r);
2406 if(hashcmp(h1, h2))
2407 return(h1);
2408 break;
2409 case SOP_HASHIS:
2410 if(!wcscmp(sexpr->d.hash->algo, L"TTH"))
2411 return(sexpr->d.hash);
2412 default:
2413 break;
2414 }
2415 return(NULL);
2416}
2417
d3372da9 2418static int hubsearch(struct fnetnode *fn, struct search *srch, struct srchfnnlist *ln)
2419{
2420 struct dchub *hub;
2421 struct wcslist *list, *cur;
2422 char *sstr, *buf, *p;
2423 size_t sstrsize, sstrdata;
2424 struct sockaddr *name;
2425 socklen_t namelen;
2426 int minsize, maxsize;
9d8cf743 2427 struct hash *hash;
d3372da9 2428
2429 hub = fn->data;
2430 if((fn->state != FNN_EST) || (fn->sk == NULL) || (fn->sk->state != SOCK_EST))
2431 return(1);
2432 list = findsexprstrs(srch->sexpr);
2433 findsizelimit(srch->sexpr, &minsize, &maxsize);
9d8cf743 2434 hash = findsehash(srch->sexpr);
d3372da9 2435 if((minsize != 0) && (maxsize != -1))
2436 {
2437 /* Choose either minsize or maxsize by trying to determine
2438 * which choice will be most restrictive. The result can be
2439 * approximative at best anyway, so don't try too hard... */
2440 if((50000000 - maxsize) > (minsize - 50000000))
2441 minsize = 0;
2442 else
2443 maxsize = -1;
2444 }
d3372da9 2445 sstr = NULL;
2446 sstrsize = sstrdata = 0;
9d8cf743 2447 if((hash != NULL) && (hash->len == 24))
d3372da9 2448 {
9d8cf743 2449 /* Prioritize hash searches above all else */
2450 bufcat(sstr, "F?T?0?9?TTH:", 12);
2451 buf = base32encode(hash->buf, hash->len);
2452
2453 bufcat(sstr, buf, 39);
2454 free(buf);
2455 } else {
2456 if(minsize != 0)
d3372da9 2457 {
9d8cf743 2458 sizebuf2(sstr, sstrdata + 32, 1);
fe42d689 2459 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?F?%i?1?", minsize);
9d8cf743 2460 } else if(maxsize != -1) {
2461 sizebuf2(sstr, sstrdata + 32, 1);
fe42d689 2462 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?T?%i?1?", maxsize);
9d8cf743 2463 } else {
2464 bufcat(sstr, "F?F?0?1?", 8);
2465 }
2466 if(list != NULL)
2467 {
2468 for(cur = list; cur != NULL; cur = cur->next)
d3372da9 2469 {
9d8cf743 2470 if((buf = icwcstombs(cur->str, DCCHARSET)) == NULL)
2471 {
2472 /* Can't find anything anyway if the search expression
2473 * requires characters outside DC's charset. There's
2474 * nothing technically wrong with the search itself,
2475 * however, so return success. This should be
2476 * considered as an optimization. */
2477 freesl(&list);
2478 if(sstr != NULL)
2479 free(sstr);
2480 return(0);
2481 }
2482 if(cur != list)
2483 addtobuf(sstr, '$');
2484 /*
2485 * It probably doesn't hurt if buf contains any extra
2486 * dollar signs - it will just result in extra search
2487 * terms, and the extraneous results will be filtered by
2488 * the search layer anyway. It hurts if it contains any
2489 * pipes, though, so let's sell them for money.
2490 */
2491 for(p = buf; *p; p++)
2492 {
2493 if(*p == '|')
2494 *p = '$';
2495 }
2496 bufcat(sstr, buf, strlen(buf));
2497 free(buf);
d3372da9 2498 }
9d8cf743 2499 } else {
2500 /* Will match all files... :-/ */
2501 addtobuf(sstr, '.');
d3372da9 2502 }
d3372da9 2503 }
2504 addtobuf(sstr, 0);
2505 if(tcpsock != NULL)
2506 {
2507 if(sockgetremotename(udpsock, &name, &namelen) < 0)
2508 {
2509 flog(LOG_WARNING, "cannot get address of UDP socket");
2510 } else {
9d8cf743 2511 qstrf(fn->sk, "$Search %s %s|", formataddress(name, namelen), sstr);
d3372da9 2512 free(name);
2513 }
2514 } else {
9d8cf743 2515 qstrf(fn->sk, "$Search Hub:%s %s|", hub->nativenick, sstr);
d3372da9 2516 }
2517 free(sstr);
2518 freesl(&list);
2519 fn->lastsrch = time(NULL);
2520 return(0);
2521}
2522
2523#undef skipcmd
2524#undef qstr
2525#undef qstrf
2526
2527#define cc(c) ((void (*)(struct socket *, void *, char *, char *))(c))
2528struct command hubcmds[] =
2529{
2530 {"$Lock", cc(cmd_lock)},
2531 {"$HubName", cc(cmd_hubname)},
2532 {"$Hello", cc(cmd_hello)},
2533 {"$Quit", cc(cmd_quit)},
2534 {"$NickList", cc(cmd_nicklist)},
2535 {"$OpList", cc(cmd_oplist)},
2536 {"$MyINFO", cc(cmd_myinfo)},
2537 {"$ForceMove", cc(cmd_forcemove)},
2538 {"$Search", cc(cmd_search)},
2539 {"$MultiSearch", cc(cmd_search)},
2540 {"$ConnectToMe", cc(cmd_connecttome)},
2541 {"$RevConnectToMe", cc(cmd_revconnecttome)},
2542 {"$GetNetInfo", cc(cmd_getnetinfo)},
2543 {"$To:", cc(cmd_to)},
2544 {"$SR", cc(cmd_sr)},
2545 {"$UserCommand", cc(cmd_usercommand)},
48509089 2546 {"$GetPass", cc(cmd_getpass)},
c9b3ad74 2547 {"$LogedIn", cc(cmd_logedin)}, /* sic */
d3372da9 2548 {NULL, NULL}
2549};
2550
2551struct command peercmds[] =
2552{
2553 {"$MyNick", cc(cmd_mynick)},
2554 {"$Lock", cc(cmd_peerlock)},
2555 {"$Direction", cc(cmd_direction)},
2556 {"$Key", cc(cmd_key)},
2557 {"$FileLength", cc(cmd_filelength)},
2558 {"$Error", cc(cmd_error)},
2559 {"$MaxedOut", cc(cmd_maxedout)},
2560 {"$Get", cc(cmd_get)},
2561 {"$Send", cc(cmd_send)},
2562 {"$Supports", cc(cmd_supports)},
2563 {"$GetBlock", cc(cmd_getblock)},
2564 {"$UGetBlock", cc(cmd_getblock)},
2565 {"$GetZBlock", cc(cmd_getblock)},
2566 {"$UGetZBlock", cc(cmd_getblock)},
2567 {"$ADCGET", cc(cmd_adcget)},
9a2d6cb8 2568 {"$ADCSND", cc(cmd_adcsnd), 1},
2569 {"$Sending", cc(cmd_sending), 1},
d3372da9 2570 {NULL, NULL}
2571};
2572#undef cc
2573
2574static void dctransdetach(struct transfer *transfer, struct dcpeer *peer)
2575{
2576 CBUNREG(transfer, trans_filterout, peer);
2577 if(peer->freeing)
2578 return;
2579 peer->transfer = NULL;
2580 freedcpeer(peer);
2581}
2582
2583static void dctransgotdata(struct transfer *transfer, struct dcpeer *peer)
2584{
2585 int ret;
2586 void *buf;
2587 char outbuf[1024];
2588 z_stream *cstr;
2589 size_t bufsize;
2590
2591 if((peer->state == PEER_TRNS) || (peer->state == PEER_SYNC))
2592 {
2593 if(sockqueuesize(peer->sk) < 65536)
2594 {
2595 if((buf = transfergetdata(transfer, &bufsize)) != NULL)
2596 {
2597 if(peer->compress == CPRS_NONE)
2598 {
2599 sockqueue(peer->sk, buf, bufsize);
2600 } else if(peer->compress == CPRS_ZLIB) {
2601 cstr = peer->cprsdata;
2602 cstr->next_in = buf;
2603 cstr->avail_in = bufsize;
2604 while(cstr->avail_in > 0)
2605 {
2606 cstr->next_out = outbuf;
2607 cstr->avail_out = sizeof(outbuf);
2608 if((ret = deflate(cstr, 0)) != Z_OK)
2609 {
2610 flog(LOG_WARNING, "bug? deflate() did not return Z_OK (but rather %i)", ret);
2611 freedcpeer(peer);
2612 return;
2613 }
2614 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2615 }
2616 }
2617 free(buf);
2618 }
2619 if(peer->state == PEER_SYNC)
2620 {
2621 if(peer->compress == CPRS_ZLIB)
2622 {
2623 cstr = peer->cprsdata;
2624 cstr->next_in = NULL;
2625 cstr->avail_in = 0;
2626 do
2627 {
2628 cstr->next_out = outbuf;
2629 cstr->avail_out = sizeof(outbuf);
2630 ret = deflate(cstr, Z_FINISH);
2631 if((ret != Z_OK) && (ret != Z_STREAM_END))
2632 {
2633 flog(LOG_WARNING, "bug? deflate(Z_FINISH) did not return Z_OK (but rather %i)", ret);
2634 freedcpeer(peer);
2635 return;
2636 }
2637 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2638 } while(ret != Z_STREAM_END);
2639 }
2640 if(peer->ptclose)
2641 {
2642 freedcpeer(peer);
2643 } else {
1e9d82b1 2644 if(peer->timeout == NULL)
2645 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 2646 peer->state = PEER_CMD;
2647 endcompress(peer);
2648 transfersetstate(transfer, TRNS_HS);
2649 socksettos(peer->sk, confgetint("fnet", "fnptos"));
bfc261fe 2650 transfer->flags.b.minislot = 0;
d3372da9 2651 peer->sk->writecb = NULL;
2652 }
2653 }
2654 }
2655 }
2656}
2657
2658static void dctransendofdata(struct transfer *transfer, struct dcpeer *peer)
2659{
2660 peer->state = PEER_SYNC;
2661 dctransgotdata(transfer, peer);
2662}
2663
2664static void dcwantdata(struct transfer *transfer, struct dcpeer *peer)
2665{
2666 if(transferdatasize(transfer) < 65536)
2667 peer->sk->ignread = 0;
2668}
2669
2670static void transread(struct socket *sk, struct dcpeer *peer)
2671{
2672 void *buf;
2673 size_t bufsize;
2674 struct transfer *transfer;
2675
2676 if((buf = sockgetinbuf(sk, &bufsize)) == NULL)
2677 return;
2678 if(peer->transfer == NULL)
2679 {
2680 free(buf);
2681 freedcpeer(peer);
2682 return;
2683 }
2684 transferputdata(peer->transfer, buf, bufsize);
2685 free(buf);
2686 if(peer->transfer->curpos >= peer->transfer->size)
2687 {
2688 transfer = peer->transfer;
2689 transferdetach(transfer);
2690 transferendofdata(transfer);
2691 return;
2692 }
2693 if(transferdatasize(peer->transfer) > 65535)
2694 sk->ignread = 1;
2695}
2696
2697static void transerr(struct socket *sk, int err, struct dcpeer *peer)
2698{
2699 struct transfer *transfer;
2700
2701 if((transfer = peer->transfer) == NULL)
2702 {
2703 freedcpeer(peer);
2704 return;
2705 }
2706 transferdetach(transfer);
2707 transferendofdata(transfer);
2708}
2709
2710static void transwrite(struct socket *sk, struct dcpeer *peer)
2711{
2712 if((peer->state != PEER_TRNS) && (peer->state != PEER_SYNC))
2713 return;
2714 if(peer->transfer == NULL)
2715 {
2716 freedcpeer(peer);
2717 return;
2718 }
2719 dctransgotdata(peer->transfer, peer);
2720}
2721
2722static void udpread(struct socket *sk, void *data)
2723{
d86b7a9f 2724 char *buf, *p, *p2, *hashbuf;
2725 size_t buflen, hashlen;
d3372da9 2726 char *nick, *filename, *hubname;
99a28d47 2727 struct sockaddr_in hubaddr;
d3372da9 2728 int size, slots;
2729 struct fnetnode *fn, *myfn;
2730 struct dchub *hub;
2731 struct srchres *sr;
2732 wchar_t *wnick, *wfile;
d86b7a9f 2733 struct hash *hash;
d3372da9 2734
2735 if((buf = sockgetinbuf(sk, &buflen)) == NULL)
2736 return;
2737 buf = srealloc(buf, buflen + 1);
2738 buf[buflen] = 0;
2739 if(!strncmp(buf, "$SR ", 4))
2740 {
2741 p = buf + 4;
2742 nick = p;
2743 if((p2 = strchr(p, ' ')) == NULL)
2744 {
2745 free(buf);
2746 return;
2747 }
2748 *p2 = 0;
2749 p = p2 + 1;
2750 filename = p;
2751 if((p2 = strchr(p, 5)) == NULL)
2752 {
2753 free(buf);
2754 return;
2755 }
2756 *p2 = 0;
2757 p = p2 + 1;
2758 if((p2 = strchr(p, ' ')) == NULL)
2759 {
2760 free(buf);
2761 return;
2762 }
2763 *p2 = 0;
2764 size = atoi(p);
2765 p = p2 + 1;
2766 if((p2 = strchr(p, '/')) == NULL)
2767 {
2768 free(buf);
2769 return;
2770 }
2771 *p2 = 0;
2772 slots = atoi(p);
2773 p = p2 + 1;
2774 if((p2 = strchr(p, 5)) == NULL)
2775 {
2776 free(buf);
2777 return;
2778 }
2779 p = p2 + 1;
2780 hubname = p;
2781 if((p2 = strstr(p, " (")) == NULL)
2782 {
2783 free(buf);
2784 return;
2785 }
2786 *p2 = 0;
99a28d47 2787 p = p2 + 2;
2788 if((p2 = strchr(p, ':')) == NULL)
2789 {
2790 free(buf);
2791 return;
2792 }
870bf4ad 2793 *(p2++) = 0;
99a28d47 2794 hubaddr.sin_family = AF_INET;
2795 if(!inet_aton(p, &hubaddr.sin_addr))
2796 {
2797 free(buf);
2798 return;
2799 }
2800 p = p2;
2801 if((p2 = strchr(p, ')')) == NULL)
2802 {
2803 free(buf);
2804 return;
2805 }
2806 *p2 = 0;
2807 hubaddr.sin_port = htons(atoi(p));
d3372da9 2808 if((wnick = icmbstowcs(nick, DCCHARSET)) == NULL)
2809 {
2810 free(buf);
2811 return;
2812 }
2813 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
2814 {
2815 free(wnick);
2816 free(buf);
2817 return;
2818 }
2819 myfn = NULL;
d86b7a9f 2820 hash = NULL;
2821 if(!strncmp(hubname, "TTH:", 4))
d3372da9 2822 {
d86b7a9f 2823 if((hashbuf = base32decode(hubname + 4, &hashlen)) != NULL)
2824 {
2825 if(hashlen == 24)
2826 hash = newhash(L"TTH", 24, hashbuf);
2827 free(hashbuf);
2828 }
2829 } else {
2830 for(fn = fnetnodes; fn != NULL; fn = fn->next)
d3372da9 2831 {
d86b7a9f 2832 if((fn->fnet == &dcnet) && ((hub = fn->data) != NULL))
d3372da9 2833 {
d86b7a9f 2834 if((hub->nativename != NULL) && !strcmp(hub->nativename, hubname))
d3372da9 2835 {
d86b7a9f 2836 if(myfn == NULL)
2837 {
2838 myfn = fn;
2839 } else {
2840 myfn = NULL;
2841 break;
2842 }
d3372da9 2843 }
2844 }
2845 }
2846 }
99a28d47 2847 if(myfn == NULL)
2848 {
2849 for(fn = fnetnodes; fn != NULL; fn = fn->next)
2850 {
39cc1b93 2851 if((fn->fnet == &dcnet) && (fn->sk != NULL) && addreq(fn->sk->remote, (struct sockaddr *)&hubaddr))
99a28d47 2852 {
2853 myfn = fn;
2854 break;
2855 }
2856 }
2857 }
d3372da9 2858 sr = newsrchres(&dcnet, wfile, wnick);
2859 if(sr->peernick != NULL)
2860 free(sr->peernick);
2861 sr->peernick = swcsdup(wnick);
2862 sr->size = size;
2863 sr->slots = slots;
2864 free(wfile);
2865 free(wnick);
2866 if(myfn != NULL)
2867 getfnetnode(sr->fn = myfn);
d86b7a9f 2868 if(hash != NULL)
2869 sr->hash = hash;
d3372da9 2870 submitsrchres(sr);
2871 freesrchres(sr);
2872 }
2873 free(buf);
2874}
2875
2876static void hubread(struct socket *sk, struct fnetnode *fn)
2877{
2878 struct dchub *hub;
2879 char *newbuf;
2880 size_t datalen;
2881 char *p;
2882
2883 hub = (struct dchub *)fn->data;
2884 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
2885 return;
2886 if(hub->inbufdata > 500000) /* Discard possible malicious data */
2887 hub->inbufdata = 0;
2888 sizebuf2(hub->inbuf, hub->inbufdata + datalen, 1);
2889 memcpy(hub->inbuf + hub->inbufdata, newbuf, datalen);
2890 free(newbuf);
2891 p = hub->inbuf + hub->inbufdata;
2892 hub->inbufdata += datalen;
2893 while((datalen > 0) && ((p = memchr(p, '|', datalen)) != NULL))
2894 {
2895 *(p++) = 0;
2896 newqcmd(&hub->queue, hub->inbuf);
2897 memmove(hub->inbuf, p, hub->inbufdata -= p - hub->inbuf);
2898 datalen = hub->inbufdata;
2899 p = hub->inbuf;
2900 }
2901}
2902
2903static void huberr(struct socket *sk, int err, struct fnetnode *fn)
2904{
2905 killfnetnode(fn);
2906}
2907
2908static int hubsetnick(struct fnetnode *fn, wchar_t *newnick)
2909{
2910 struct dchub *hub;
2911 char *buf;
2912
2913 hub = fn->data;
2914 if((buf = icwcstombs(newnick, DCCHARSET)) == NULL)
2915 return(1);
2916 if((strchr(buf, ' ') != NULL) || (strchr(buf, '|') != NULL) || (strchr(buf, '$') != NULL))
2917 {
2918 free(buf);
2919 return(1);
2920 }
2921 if(hub == NULL) /* Not yet connected */
2922 {
2923 free(buf);
2924 return(0);
2925 }
2926 if(hub->nativenick != NULL)
2927 free(hub->nativenick);
2928 hub->nativenick = buf;
2929 return(0);
2930}
2931
2932static struct dchub *newdchub(struct fnetnode *fn)
2933{
2934 struct dchub *new;
1c4b02cd 2935 wchar_t *emu;
d3372da9 2936
2937 new = smalloc(sizeof(*new));
2938 memset(new, 0, sizeof(*new));
2939 fn->data = new;
1c4b02cd 2940 if(confgetint("dc", "dcppemu"))
2941 new->dcppemu = 1;
2942 if((emu = wpfind(fn->args, L"dcppemu")) != NULL)
2943 {
2944 if(*emu == L'y')
2945 new->dcppemu = 1;
2946 if(*emu == L'n')
2947 new->dcppemu = 0;
2948 }
d3372da9 2949 if(hubsetnick(fn, fn->mynick))
2950 fnetsetnick(fn, L"DoldaConnectUser-IN");
2951 /* IN as in Invalid Nick */
2952 return(new);
2953}
2954
2955static struct dcpeer *newdcpeer(struct socket *sk)
2956{
2957 struct dcpeer *new;
2958
2959 new = smalloc(sizeof(*new));
2960 memset(new, 0, sizeof(*new));
2961 new->transfer = NULL;
2962 getsock(sk);
2963 new->sk = sk;
1c4b02cd 2964 if(confgetint("dc", "dcppemu"))
2965 new->dcppemu = 1;
d3372da9 2966 new->next = peers;
2967 new->prev = NULL;
2968 if(peers != NULL)
2969 peers->prev = new;
2970 peers = new;
2971 numdcpeers++;
2972 return(new);
2973}
2974
2975static void freedcpeer(struct dcpeer *peer)
2976{
2977 int i;
2978 struct qcommand *qcmd;
2979
2980 peer->freeing = 1;
2981 if(peers == peer)
2982 peers = peer->next;
2983 if(peer->next != NULL)
2984 peer->next->prev = peer->prev;
2985 if(peer->prev != NULL)
2986 peer->prev->next = peer->next;
2987 if(peer->transfer != NULL)
2988 {
2989 if(peer->transfer->dir == TRNSD_UP)
2990 peer->transfer->close = 1;
2991 if(peer->transfer->dir == TRNSD_DOWN)
2992 resettransfer(peer->transfer);
2993 transferdetach(peer->transfer);
2994 }
1e9d82b1 2995 if(peer->timeout != NULL)
2996 canceltimer(peer->timeout);
d3372da9 2997 if(peer->sk->data == peer)
2998 peer->sk->data = NULL;
2999 peer->sk->readcb = NULL;
3000 peer->sk->writecb = NULL;
3001 peer->sk->errcb = NULL;
3002 putsock(peer->sk);
3003 endcompress(peer);
3004 if(peer->supports != NULL)
3005 {
3006 for(i = 0; peer->supports[i] != NULL; i++)
3007 free(peer->supports[i]);
3008 free(peer->supports);
3009 }
d3372da9 3010 if(peer->inbuf != NULL)
3011 free(peer->inbuf);
3012 if(peer->key != NULL)
3013 free(peer->key);
3014 if(peer->wcsname != NULL)
3015 free(peer->wcsname);
3016 if(peer->nativename != NULL)
3017 free(peer->nativename);
3018 if(peer->fn != NULL)
3019 putfnetnode(peer->fn);
3020 while((qcmd = ulqcmd(&peer->queue)) != NULL)
3021 freeqcmd(qcmd);
3022 free(peer);
3023 numdcpeers--;
3024}
3025
3026static void hubconnect(struct fnetnode *fn)
3027{
3028 fn->sk->readcb = (void (*)(struct socket *, void *))hubread;
3029 fn->sk->errcb = (void (*)(struct socket *, int, void *))huberr;
3030 getfnetnode(fn);
3031 fn->data = newdchub(fn);
3032 fn->sk->data = fn;
3033 return;
3034}
3035
3036static void hubdestroy(struct fnetnode *fn)
3037{
3038 struct dchub *hub;
3039 struct qcommand *qcmd;
3040
3041 hub = (struct dchub *)fn->data;
3042 if(fn->sk != NULL)
3043 {
3044 if(fn->sk->data == fn)
3045 {
3046 fn->sk->data = NULL;
3047 putfnetnode(fn);
3048 }
3049 }
3050 if(hub == NULL)
3051 return;
3052 while((qcmd = ulqcmd(&hub->queue)) != NULL)
3053 freeqcmd(qcmd);
3054 if(hub->nativename != NULL)
3055 free(hub->nativename);
3056 if(hub->nativenick != NULL)
3057 free(hub->nativenick);
3058 if(hub->inbuf != NULL)
3059 free(hub->inbuf);
3060 free(hub);
3061}
3062
3063static wchar_t *dcbasename(wchar_t *filename)
3064{
3065 wchar_t *ret;
3066
3067 if((ret = wcsrchr(filename, L'\\')) != NULL)
3068 return(ret + 1);
3069 return(filename);
3070}
3071
3072static struct transferiface dctransfer =
3073{
3074 .detach = (void (*)(struct transfer *, void *))dctransdetach,
3075 .gotdata = (void (*)(struct transfer *, void *))dctransgotdata,
3076 .endofdata = (void (*)(struct transfer *, void *))dctransendofdata,
3077 .wantdata = (void (*)(struct transfer *, void *))dcwantdata
3078};
3079
3080static struct fnet dcnet =
3081{
3082 .name = L"dc",
3083 .connect = hubconnect,
3084 .destroy = hubdestroy,
3085 .setnick = hubsetnick,
3086 .reqconn = hubreqconn,
3087 .sendchat = hubsendchat,
3088 .search = hubsearch,
3089 .filebasename = dcbasename
3090};
3091
3092static void peerread(struct socket *sk, struct dcpeer *peer)
3093{
3094 char *newbuf, *p;
3095 size_t datalen;
9a2d6cb8 3096 struct command *cmd;
d3372da9 3097
3098 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
3099 return;
3100 sizebuf2(peer->inbuf, peer->inbufdata + datalen, 1);
3101 memcpy(peer->inbuf + peer->inbufdata, newbuf, datalen);
3102 free(newbuf);
d3372da9 3103 peer->inbufdata += datalen;
9a2d6cb8 3104 if(peer->state == PEER_CMD)
d3372da9 3105 {
d3372da9 3106 p = peer->inbuf;
9a2d6cb8 3107 while((peer->inbufdata > 0) && (p = memchr(peer->inbuf, '|', peer->inbufdata)) != NULL)
3108 {
3109 *(p++) = 0;
3110 newqcmd(&peer->queue, peer->inbuf);
3111 for(cmd = peercmds; cmd->handler != NULL; cmd++)
3112 {
5eee9d66 3113 if(!memcmp(peer->inbuf, cmd->name, strlen(cmd->name)) && ((peer->inbuf[strlen(cmd->name)] == ' ') || (peer->inbuf[strlen(cmd->name)] == '|')))
9a2d6cb8 3114 break;
3115 }
5eee9d66 3116 memmove(peer->inbuf, p, peer->inbufdata -= p - peer->inbuf);
9a2d6cb8 3117 if(cmd->stop)
3118 {
3119 peer->state = PEER_STOP;
3120 break;
3121 }
9a2d6cb8 3122 }
3123 } else if(peer->state == PEER_TTHL) {
3124 handletthl(peer);
d3372da9 3125 }
3126}
3127
3128static void peererror(struct socket *sk, int err, struct dcpeer *peer)
3129{
3130 freedcpeer(peer);
3131}
3132
3133static void peerconnect(struct socket *sk, int err, struct fnetnode *fn)
3134{
3135 struct dcpeer *peer;
1c4b02cd 3136 struct dchub *hub;
d3372da9 3137
3138 if(err != 0)
3139 {
3140 putfnetnode(fn);
3141 return;
3142 }
1c4b02cd 3143 hub = fn->data;
d3372da9 3144 peer = newdcpeer(sk);
3145 peer->fn = fn;
3146 peer->accepted = 0;
1c4b02cd 3147 peer->dcppemu = hub->dcppemu;
d3372da9 3148 sk->readcb = (void (*)(struct socket *, void *))peerread;
3149 sk->errcb = (void (*)(struct socket *, int, void *))peererror;
3150 sk->data = peer;
3151 socksettos(sk, confgetint("fnet", "fnptos"));
d3372da9 3152 putsock(sk);
1e9d82b1 3153 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
9a2d6cb8 3154 sendmynick(peer);
3155 sendpeerlock(peer);
d3372da9 3156}
3157
3158static void peeraccept(struct socket *sk, struct socket *newsk, void *data)
3159{
3160 struct dcpeer *peer;
3161
3162 peer = newdcpeer(newsk);
3163 peer->accepted = 1;
3164 newsk->readcb = (void (*)(struct socket *, void *))peerread;
3165 newsk->errcb = (void (*)(struct socket *, int, void *))peererror;
3166 newsk->data = peer;
3167 socksettos(newsk, confgetint("fnet", "fnptos"));
1e9d82b1 3168 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 3169}
3170
3171static void updatehmlist(void)
3172{
3173 int i, lev, ic, ret;
3174 struct sharecache *node;
3175 char *buf, *buf2, numbuf[32];
3176 size_t bufsize, bufdata;
3177 int fd, ibuf;
3178
3179 bufdata = 0;
3180 buf = smalloc(bufsize = 65536);
3181 node = shareroot->child;
3182 lev = 0;
3183 while(1)
3184 {
3185 ic = 0;
3186 if((buf2 = icwcstombs(node->name, DCCHARSET)) != NULL)
3187 {
3188 for(i = 0; i < lev; i++)
3189 addtobuf(buf, 9);
3190 bufcat(buf, buf2, strlen(buf2));
3191 free(buf2);
3192 if(node->f.b.type == FILE_REG)
3193 {
3194 addtobuf(buf, '|');
3195 sprintf(numbuf, "%i", node->size);
3196 bufcat(buf, numbuf, strlen(numbuf));
3197 }
3198 addtobuf(buf, 13);
3199 addtobuf(buf, 10);
3200 } else {
3201 ic = 1;
3202 }
3203 if((node->child != NULL) && !ic)
3204 {
3205 lev++;
3206 node = node->child;
3207 } else if(node->next != NULL) {
3208 node = node->next;
3209 } else {
3210 while(node->next == NULL)
3211 {
3212 lev--;
3213 node = node->parent;
3214 if(node == shareroot)
3215 break;
3216 }
3217 if(node == shareroot)
3218 break;
3219 node = node->next;
3220 }
3221 }
3222 if(hmlistname != NULL)
3223 {
3224 unlink(hmlistname);
3225 free(hmlistname);
3226 }
3227 hmlistname = sstrdup("/tmp/dc-filelist-hm-XXXXXX");
3228 if((fd = mkstemp(hmlistname)) < 0)
3229 {
3230 flog(LOG_WARNING, "could not create HM file list tempfile: %s", strerror(errno));
3231 free(hmlistname);
3232 hmlistname = NULL;
3233 } else {
3234 /*
3235 * I do not want to implement a good Huffman encoder, and it's not
3236 * like Huffman encoding actually yields any impressive results
3237 * for DC file lists anyway, so I'll just output a bogus
3238 * tree. Implement a good encoder if you want to.
3239 */
3240 write(fd, "HE3\r\0", 5);
3241 write(fd, &bufdata, 4);
3242 ibuf = 256;
3243 write(fd, &ibuf, 2);
3244 ibuf = 8;
3245 for(i = 0; i < 256; i++)
3246 {
3247 write(fd, &i, 1);
3248 write(fd, &ibuf, 1);
3249 }
3250 for(i = 0; i < 256; i++)
3251 write(fd, &i, 1);
3252 for(buf2 = buf; bufdata > 0;)
3253 {
3254 if((ret = write(fd, buf2, bufdata)) < 0)
3255 {
3256 flog(LOG_WARNING, "could not write file list: %s", strerror(errno));
3257 break;
3258 }
3259 bufdata -= ret;
3260 buf2 += ret;
3261 }
3262 close(fd);
3263 }
3264 free(buf);
3265}
3266
3267static struct xmlent
3268{
3269 wchar_t c;
3270 wchar_t *ent;
3271} entities[] = {
3272 {L'&', L"&amp;"},
3273 {L'\"', L"&#34;"},
3274/* {L'\'', L"&quot;"}, Emulate DC++ escaping by omitting this. */
3275 {L'\0', NULL}
3276};
3277
3278static wchar_t *escapexml(wchar_t *src)
3279{
3280 static wchar_t *buf = NULL;;
3281 int ret, c;
3282 wchar_t nbuf[32];
3283 size_t bufsize, bufdata;
3284 struct xmlent *ent;
3285
3286 if(buf != NULL)
3287 free(buf);
3288 buf = NULL;
3289 bufsize = bufdata = 0;
3290 for(; *src != L'\0'; src++)
3291 {
3292 c = wctob(*src);
3293 if((c > 0) && (c < 32))
3294 {
3295 bufcat(buf, L"&#", 2);
3296 ret = swprintf(nbuf, (sizeof(nbuf) / sizeof(*nbuf)), L"%i", c);
3297 bufcat(buf, nbuf, ret);
3298 addtobuf(buf, L';');
3299 } else {
3300 for(ent = entities; ent->ent != NULL; ent++)
3301 {
3302 if(ent->c == *src)
3303 {
3304 bufcat(buf, ent->ent, wcslen(ent->ent));
3305 break;
3306 }
3307 }
3308 if(ent->ent == NULL)
3309 addtobuf(buf, *src);
3310 }
3311 }
3312 addtobuf(buf, L'\0');
3313 return(buf);
3314}
3315
3316static void updatexmllist(void)
3317{
3318 int i, fd, lev;
3319 FILE *fs;
3320 char cidbuf[14], *namebuf;
3321 char *hashbuf;
3322 struct sharecache *node;
3323
3324 if(xmllistname != NULL)
3325 {
3326 unlink(xmllistname);
3327 free(xmllistname);
3328 }
3329 xmllistname = sstrdup("/tmp/dc-filelist-dcxml-XXXXXX");
3330 if((fd = mkstemp(xmllistname)) < 0)
3331 {
3332 flog(LOG_WARNING, "could not create XML file list tempfile: %s", strerror(errno));
3333 free(xmllistname);
3334 xmllistname = NULL;
3335 return;
3336 }
3337 if((fs = fdopen(fd, "w")) == NULL)
3338 {
3339 flog(LOG_WARNING, "could not fdopen XML list fd %i: %s", fd, strerror(errno));
3340 unlink(xmllistname);
3341 free(xmllistname);
3342 xmllistname = NULL;
3343 close(fd);
3344 return;
3345 }
3346 fprintf(fs, "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?>\r\n");
3347 for(i = 0; i < sizeof(cidbuf) - 1; i++)
3348 cidbuf[i] = (rand() % ('Z' - 'A' + 1)) + 'A';
3349 cidbuf[i] = 0;
1c4b02cd 3350 if(confgetint("dc", "dcppemu"))
3351 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"DC++ 0.674\">\r\n", cidbuf);
3352 else
3353 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"%s\">\r\n", cidbuf, "DoldaConnect" VERSION);
d3372da9 3354
3355 node = shareroot->child;
3356 lev = 0;
3357 while(1)
3358 {
3359 if((namebuf = icswcstombs(escapexml(node->name), "UTF-8", NULL)) != NULL)
3360 {
3361 for(i = 0; i < lev; i++)
3362 fputc('\t', fs);
3363 if(node->child != NULL)
3364 {
3365 fprintf(fs, "<Directory Name=\"%s\">\r\n", namebuf);
3366 node = node->child;
3367 lev++;
3368 continue;
3369 } else {
3370 fprintf(fs, "<File Name=\"%s\" Size=\"%i\"", namebuf, node->size);
3371 if(node->f.b.hastth)
3372 {
3373 hashbuf = base32encode(node->hashtth, 24);
3374 fprintf(fs, " TTH=\"%.39s\"", hashbuf);
3375 free(hashbuf);
3376 }
3377 fprintf(fs, "/>\r\n");
3378 }
3379 while(node->next == NULL)
3380 {
3381 node = node->parent;
3382 if(node == shareroot)
3383 {
3384 break;
3385 } else {
3386 lev--;
3387 for(i = 0; i < lev; i++)
3388 fputc('\t', fs);
3389 fprintf(fs, "</Directory>\r\n");
3390 }
3391 }
3392 if(node == shareroot)
3393 break;
3394 node = node->next;
3395 }
3396 }
3397
1c4b02cd 3398 if(confgetint("dc", "dcppemu"))
3399 fprintf(fs, "</FileListing>");
3400 else
3401 fprintf(fs, "</FileListing>\r\n");
d3372da9 3402 fclose(fs);
3403}
3404
3405static void updatexmlbz2list(void)
3406{
3407 int err, fd;
3408 FILE *in;
3409 FILE *real;
3410 BZFILE *out;
3411 char buf[1024];
3412 size_t bufdata;
3413
3414 if(xmllistname == NULL)
3415 return;
3416 if((in = fopen(xmllistname, "r")) == NULL)
3417 {
3418 flog(LOG_WARNING, "could not open XML file list for bzipping: %s", strerror(errno));
3419 return;
3420 }
3421 if(xmlbz2listname != NULL)
3422 {
3423 unlink(xmlbz2listname);
3424 free(xmlbz2listname);
3425 }
3426 xmlbz2listname = sstrdup("/tmp/dc-filelist-dcxmlbz2-XXXXXX");
3427 if((fd = mkstemp(xmlbz2listname)) < 0)
3428 {
3429 flog(LOG_WARNING, "could not create bzipped XML file list tempfile: %s", strerror(errno));
3430 free(xmlbz2listname);
3431 xmlbz2listname = NULL;
3432 fclose(in);
3433 return;
3434 }
3435 if((real = fdopen(fd, "w")) == NULL)
3436 {
3437 flog(LOG_WARNING, "could not fdopen bzipped XML list fd %i: %s", fd, strerror(errno));
3438 close(fd);
3439 unlink(xmlbz2listname);
3440 free(xmlbz2listname);
3441 xmlbz2listname = NULL;
3442 fclose(in);
3443 return;
3444 }
3445 out = BZ2_bzWriteOpen(&err, real, 9, 0, 0);
3446 if(err != BZ_OK)
3447 {
3448 flog(LOG_WARNING, "could not open bzip2 stream from XML list");
3449 fclose(real);
3450 unlink(xmlbz2listname);
3451 free(xmlbz2listname);
3452 xmlbz2listname = NULL;
3453 fclose(in);
3454 return;
3455 }
3456 while(!feof(in))
3457 {
3458 bufdata = fread(buf, 1, sizeof(buf), in);
3459 BZ2_bzWrite(&err, out, buf, bufdata);
3460 }
3461 fclose(in);
3462 BZ2_bzWriteClose(&err, out, 0, NULL, NULL);
3463 fclose(real);
3464}
3465
3466static int shareupdate(unsigned long long uusharesize, void *data)
3467{
3468 updatehmlist();
3469 updatexmllist();
3470 updatexmlbz2list();
3471 return(0);
3472}
3473
3474static void dispatchcommand(struct qcommand *qcmd, struct command *cmdlist, struct socket *sk, void *data)
3475{
3476 char *p;
3477 struct command *cmd;
3478
3479 if((p = strchr(qcmd->string, ' ')) != NULL)
3480 *(p++) = 0;
3481 for(cmd = cmdlist; cmd->handler != NULL; cmd++)
3482 {
3483 if(!strcmp(cmd->name, qcmd->string))
3484 break;
3485 }
3486 if(cmd->handler != NULL)
3487 cmd->handler(sk, data, qcmd->string, p);
3488/*
3489 else
3490 flog(LOG_DEBUG, "Unimplemented DC command: %s \"%s\"", qcmd->string, p?p:"noargs");
3491*/
3492}
3493
3494static int run(void)
3495{
3496 struct fnetnode *fn, *nextfn;
3497 struct dchub *hub;
3498 struct dcpeer *peer, *nextpeer;
3499 struct qcommand *qcmd;
3500 int ret;
3501
3502 ret = 0;
3503 for(fn = fnetnodes; fn != NULL; fn = nextfn)
3504 {
3505 nextfn = fn->next;
3506 if(fn->fnet != &dcnet)
3507 continue;
3508 if(fn->data == NULL)
3509 continue;
3510 hub = (struct dchub *)fn->data;
3511 if((qcmd = ulqcmd(&hub->queue)) != NULL)
3512 {
3513 if(*qcmd->string == '$')
3514 {
3515 if((fn->sk != NULL) && (fn->sk->state == SOCK_EST))
3516 dispatchcommand(qcmd, hubcmds, fn->sk, fn);
3517 } else if(*qcmd->string != 0) {
3518 hubrecvchat(fn->sk, fn, NULL, qcmd->string);
3519 }
3520 freeqcmd(qcmd);
3521 ret = 1;
3522 break;
3523 }
3524 }
3525 for(peer = peers; peer != NULL; peer = nextpeer)
3526 {
3527 nextpeer = peer->next;
3528 if((qcmd = ulqcmd(&peer->queue)) != NULL)
3529 {
1e9d82b1 3530 if(peer->timeout != NULL)
3531 canceltimer(peer->timeout);
3532 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 3533 if(*qcmd->string == '$')
3534 dispatchcommand(qcmd, peercmds, peer->sk, peer);
3535 freeqcmd(qcmd);
3536 ret = 1;
3537 break;
3538 }
3539 }
3540 return(ret);
3541}
3542
3543static void preinit(int hup)
3544{
3545 if(hup)
3546 return;
3547 regfnet(&dcnet);
3548}
3549
3550static int updateudpport(struct configvar *var, void *uudata)
3551{
3552 struct sockaddr_in addr;
3553 struct socket *newsock;
3554
3555 memset(&addr, 0, sizeof(addr));
3556 addr.sin_family = AF_INET;
3557 addr.sin_port = htons(var->val.num);
3558 if((newsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3559 {
3560 flog(LOG_WARNING, "could not create new DC UDP socket, reverting to old: %s", strerror(errno));
3561 return(0);
3562 }
3563 newsock->readcb = udpread;
3564 if(udpsock != NULL)
3565 putsock(udpsock);
3566 udpsock = newsock;
3567 return(0);
3568}
3569
3570static int updatetcpport(struct configvar *var, void *uudata)
3571{
3572 struct sockaddr_in addr;
3573 struct socket *newsock;
3574
3575 memset(&addr, 0, sizeof(addr));
3576 addr.sin_family = AF_INET;
3577 addr.sin_port = htons(var->val.num);
3578 if((newsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3579 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3580 if(tcpsock != NULL)
3581 putsock(tcpsock);
3582 tcpsock = newsock;
3583 return(0);
3584}
3585
3586static int init(int hup)
3587{
3588 struct sockaddr_in addr;
3589
3590 if(!hup)
3591 {
3592 GCBREG(sharechangecb, shareupdate, NULL);
3593 if(udpsock != NULL)
3594 putsock(udpsock);
3595 if(tcpsock != NULL)
3596 putsock(tcpsock);
3597 addr.sin_family = AF_INET;
3598 memset(&addr.sin_addr, 0, sizeof(addr.sin_addr));
3599 addr.sin_port = htons(confgetint("dc", "udpport"));
3600 if((udpsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3601 {
3602 flog(LOG_CRIT, "could not create DC UDP socket: %s", strerror(errno));
3603 return(1);
3604 }
3605 udpsock->readcb = udpread;
3606 addr.sin_port = htons(confgetint("dc", "tcpport"));
3607 if((tcpsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3608 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3609 CBREG(confgetvar("dc", "udpport"), conf_update, updateudpport, NULL, NULL);
3610 CBREG(confgetvar("dc", "tcpport"), conf_update, updatetcpport, NULL, NULL);
3611 CBREG(confgetvar("net", "mode"), conf_update, updatetcpport, NULL, NULL);
3612 }
3613 return(0);
3614}
3615
3616static void terminate(void)
3617{
3618 if(hmlistname != NULL)
3619 {
3620 unlink(hmlistname);
3621 free(hmlistname);
3622 }
3623 if(xmllistname != NULL)
3624 {
3625 unlink(xmllistname);
3626 free(xmllistname);
3627 }
3628 if(xmlbz2listname != NULL)
3629 {
3630 unlink(xmlbz2listname);
3631 free(xmlbz2listname);
3632 }
3633}
3634
3635static struct configvar myvars[] =
3636{
3637 {CONF_VAR_STRING, "desc", {.str = L""}},
3638 {CONF_VAR_STRING, "speedstring", {.str = L"LAN(T1)"}},
3639 {CONF_VAR_STRING, "email", {.str = L"spam@spam.org"}},
3640 {CONF_VAR_INT, "udpport", {.num = 0}},
3641 {CONF_VAR_INT, "tcpport", {.num = 0}},
1c4b02cd 3642 {CONF_VAR_BOOL, "dcppemu", {.num = 0}},
d3372da9 3643 {CONF_VAR_END}
3644};
3645
3646static struct module me =
3647{
3648 .conf =
3649 {
3650 .vars = myvars
3651 },
3652 .preinit = preinit,
3653 .init = init,
3654 .run = run,
3655 .terminate = terminate,
3656 .name = "dc"
3657};
3658
3659MODULE(me)
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