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Fix memory leak on failed peer connections.
[doldaconnect.git] / daemon / fnet-dc.c
CommitLineData
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;
1d85f24b 110 char *charset;
d3372da9 111 char *nativename;
112 char *nativenick;
113};
114
115struct dcexppeer
116{
117 struct dcexppeer *next, *prev;
118 char *nick;
119 struct fnetnode *fn;
120 struct timer *expire;
121};
122
123struct dcpeer
124{
125 struct dcpeer *next, *prev;
126 struct socket *sk;
127 struct fnetnode *fn;
128 char *inbuf;
129 size_t inbufdata, inbufsize;
9a2d6cb8 130 size_t curread, totalsize;
d3372da9 131 int freeing;
1e9d82b1 132 struct timer *timeout;
d3372da9 133 struct qcommand *queue;
134 struct transfer *transfer;
135 int state;
136 int ptclose; /* Close after transfer is complete */
137 int accepted; /* If false, we connected, otherwise, we accepted */
1c4b02cd 138 int extended, dcppemu;
d3372da9 139 int direction; /* Using the constants from transfer.h */
140 int compress;
df873cd0 141 int hascurpos, fetchingtthl, notthl;
9a2d6cb8 142 struct tigertreehash tth;
1d85f24b 143 char *charset;
d3372da9 144 void *cprsdata;
d3372da9 145 char *key;
146 char *nativename;
147 char **supports;
148 wchar_t *wcsname;
149};
150
151static struct fnet dcnet;
152static struct transferiface dctransfer;
153static struct socket *udpsock = NULL;
154static struct socket *tcpsock = NULL;
155static struct dcpeer *peers = NULL;
156int numdcpeers = 0;
157static struct dcexppeer *expected = NULL;
158static char *hmlistname = NULL;
159static char *xmllistname = NULL;
160static char *xmlbz2listname = NULL;
161
162static void peerconnect(struct socket *sk, int err, struct fnetnode *fn);
163static void freedcpeer(struct dcpeer *peer);
164static void transread(struct socket *sk, struct dcpeer *peer);
165static void transerr(struct socket *sk, int err, struct dcpeer *peer);
166static void transwrite(struct socket *sk, struct dcpeer *peer);
167static void updatehmlist(void);
168static void updatexmllist(void);
169static void updatexmlbz2list(void);
9a2d6cb8 170static void requestfile(struct dcpeer *peer);
d3372da9 171
172static int reservedchar(unsigned char c)
173{
174 return((c == 0) || (c == 5) || (c == 124) || (c == 96) || (c == 126) || (c == 36));
175}
176
177/* Oh, how I despise having to do this... */
178static char *dcmakekey(char *lock)
179{
180 int i, len, offset;
181 char *buf, *key;
182 char save;
183
184 buf = smalloc(strlen(lock));
185 save = 5;
186 len = 0;
187 for(i = 0; lock[i]; i++)
188 {
189 buf[i] = lock[i] ^ save;
190 buf[i] = ((buf[i] & 0x0F) << 4) | ((buf[i] & 0xF0) >> 4);
191 save = lock[i];
192 if((i != 0) && reservedchar(buf[i]))
193 len += 10;
194 else
195 len++;
196 }
197 buf[0] ^= buf[i - 1];
198 if(reservedchar(buf[0]))
199 len += 10;
200 else
201 len++;
202 key = smalloc(len + 1);
203 offset = 0;
204 for(i = 0; lock[i] != 0; i++)
205 {
206 if(reservedchar(buf[i]))
207 offset += sprintf(key + offset, "/%%DCN%03i%%/", buf[i]);
208 else
209 key[offset++] = buf[i];
210 }
211 key[offset] = 0;
212 free(buf);
213 return(key);
214}
215
9a2d6cb8 216static char *pathnmdc2adc(char *path)
217{
218 char *ret;
219 size_t retsize, retdata;
220
221 if(!strcmp(path, "files.xml") || !strcmp(path, "files.xml.bz2") || !strcmp(path, "MyList.DcLst"))
222 return(sstrdup(path));
223 ret = NULL;
224 retsize = retdata = 0;
225 addtobuf(ret, '/');
226 for(; *path; path++)
227 {
228 if(*path == '\\')
229 addtobuf(ret, '/');
230 else
231 addtobuf(ret, *path);
232 }
233 addtobuf(ret, 0);
234 return(ret);
235}
236
237static int isdchash(struct hash *hash)
238{
239 if(wcscmp(hash->algo, L"TTH"))
240 return(0);
241 if(hash->len != 24)
242 return(0);
243 return(1);
244}
245
246static int supports(struct dcpeer *peer, char *cap)
247{
248 char **p;
249
250 if(peer->supports == NULL)
251 return(0);
252 for(p = peer->supports; *p != NULL; p++)
253 {
254 if(!strcasecmp(*p, cap))
255 return(1);
256 }
257 return(0);
258}
259
d3372da9 260static void endcompress(struct dcpeer *peer)
261{
262 if(peer->compress == CPRS_ZLIB)
263 {
264 deflateEnd(peer->cprsdata);
265 free(peer->cprsdata);
266 }
267 peer->compress = CPRS_NONE;
268}
269
270static void initcompress(struct dcpeer *peer, int algo)
271{
272 int ret;
273
274 endcompress(peer);
275 peer->compress = algo;
276 if(algo == CPRS_ZLIB)
277 {
278 peer->cprsdata = smalloc(sizeof(z_stream));
279 memset(peer->cprsdata, 0, sizeof(z_stream));
280 if((ret = deflateInit(peer->cprsdata, 3)) != Z_OK)
281 {
282 flog(LOG_CRIT, "Aiya! zlib refuses to init (%i)!", ret);
283 abort();
284 }
285 }
286}
287
288static void unquote(wchar_t *in)
289{
290 wchar_t *p, *p2, nc;
291
292 for(p = in; *p != L'\0'; p++)
293 {
294 if(*p == L'&')
295 {
296 for(p2 = p + 1; (*p2 != L'\0') && (*p2 != L';') && (*p2 != L'&'); p2++);
297 if(*p2 == L'&')
298 continue;
299 if(*p2 == L'\0')
300 return;
301 *p2 = L'\0';
302 nc = L'\0';
303 if(!wcscmp(p + 1, L"amp"))
304 {
305 nc = L'&';
306 } else if(p[1] == L'#') {
307 nc = ucptowc(wcstol(p + 2, NULL, 10));
308 }
309 if(nc == L'\0')
310 {
311 *p2 = L';';
312 p = p2;
313 continue;
314 }
315 *p = nc;
316 memmove(p + 1, p2 + 1, (wcslen(p2 + 1) + 1) * sizeof(wchar_t));
317 }
318 }
319}
320
321static void freeexppeer(struct dcexppeer *ep)
322{
323 if(ep->next != NULL)
324 ep->next->prev = ep->prev;
325 if(ep->prev != NULL)
326 ep->prev->next = ep->next;
327 if(ep == expected)
328 expected = ep->next;
329 free(ep->nick);
330 putfnetnode(ep->fn);
331 if(ep->expire != NULL)
332 canceltimer(ep->expire);
333 free(ep);
334}
335
336static void exppeerexpire(int cancelled, struct dcexppeer *ep)
337{
338 ep->expire = NULL;
339 if(!cancelled)
340 freeexppeer(ep);
341}
342
343static struct dcexppeer *expectpeer(char *nick, struct fnetnode *fn)
344{
345 struct dcexppeer *ep;
346
347 ep = smalloc(sizeof(*ep));
348 ep->nick = sstrdup(nick);
349 getfnetnode(ep->fn = fn);
350 ep->expire = timercallback(ntime() + 300, (void (*)(int, void *))exppeerexpire, ep);
351 ep->next = expected;
352 ep->prev = NULL;
353 if(expected != NULL)
354 expected->prev = ep;
355 expected = ep;
356 return(ep);
357}
358
359static struct qcommand *newqcmd(struct qcommand **queue, char *string)
360{
361 struct qcommand *new;
362
363 while(*queue != NULL)
364 queue = &(*queue)->next;
365 new = smalloc(sizeof(*new));
366 new->string = sstrdup(string);
367 new->next = *queue;
368 *queue = new;
369 return(new);
370}
371
372static struct qcommand *ulqcmd(struct qcommand **queue)
373{
374 struct qcommand *qcmd;
375
376 if((qcmd = *queue) == NULL)
377 return(NULL);
378 *queue = qcmd->next;
379 return(qcmd);
380}
381
382static void freeqcmd(struct qcommand *qcmd)
383{
384 free(qcmd->string);
385 free(qcmd);
386}
387
388static void hubrecvchat(struct socket *sk, struct fnetnode *fn, char *from, char *string)
389{
390 wchar_t *chat, *wfrom, *wpeer;
391 char *p, *end;
392 struct fnetpeer *peer;
1d85f24b 393 struct dchub *hub;
d3372da9 394
1d85f24b 395 hub = fn->data;
d3372da9 396 end = string + strlen(string);
397 while((p = strchr(string, 13)) != NULL)
398 memmove(p, p + 1, (end-- - p));
399 if(from != NULL)
400 {
401 if((strlen(string) > strlen(from) + 2) && (*string == '<') && !memcmp(string + 1, from, strlen(from)) && (*(string + strlen(from) + 1) == '>'))
402 string += strlen(from) + 2;
1d85f24b 403 if((wfrom = icmbstowcs(from, hub->charset)) == NULL)
d3372da9 404 return;
405 wpeer = swcsdup(wfrom);
406 } else {
407 wfrom = NULL;
408 wpeer = NULL;
409 if(*string == '<')
410 {
411 for(p = string + 1; *p; p++)
412 {
413 if((*p == ' ') || (*p == '>'))
414 break;
415 }
416 if(*p == '>')
417 {
418 *(p++) = 0;
419 if(*p == ' ')
420 p++;
1d85f24b 421 if((wpeer = icmbstowcs(string + 1, hub->charset)) == NULL)
d3372da9 422 return;
423 string = p;
424 }
425 }
426 if(wpeer == NULL)
427 wpeer = swcsdup(L"");
428 }
1d85f24b 429 if((chat = icmbstowcs(string, hub->charset)) == NULL)
d3372da9 430 {
431 if(wfrom != NULL)
432 free(wfrom);
433 free(wpeer);
434 return;
435 }
436 unquote(chat);
437 if(wfrom != NULL)
438 {
439 if((peer = fnetfindpeer(fn, wfrom)) == NULL) /* Assume public chat */
440 fnethandlechat(fn, 1, wfrom, wpeer, chat);
441 else
442 fnethandlechat(fn, 0, wfrom, wpeer, chat);
443 } else {
444 fnethandlechat(fn, 1, L"", wpeer, chat);
445 }
446 if(wfrom != NULL)
447 free(wfrom);
448 free(wpeer);
449 free(chat);
450}
451
1e9d82b1 452static void peertimeout(int cancelled, struct dcpeer *peer)
453{
454 peer->timeout = NULL;
455 if(cancelled)
456 return;
457 freedcpeer(peer);
458}
459
d3372da9 460static void sendadc(struct socket *sk, char *arg)
461{
462 char *buf;
463 size_t bufsize, bufdata;
464
465 buf = NULL;
466 bufsize = bufdata = 0;
467 addtobuf(buf, ' ');
468 for(; *arg; arg++)
469 {
470 if(*arg == ' ')
471 {
472 bufcat(buf, "\\s", 2);
473 } else if(*arg == '\n') {
474 bufcat(buf, "\\n", 2);
475 } else if(*arg == '\\') {
476 bufcat(buf, "\\\\", 2);
477 } else {
478 addtobuf(buf, *arg);
479 }
480 }
481 sockqueue(sk, buf, bufdata);
482 free(buf);
483}
484
485static void sendadcf(struct socket *sk, char *arg, ...)
486{
487 char *buf;
488 va_list args;
489
490 va_start(args, arg);
491 buf = vsprintf2(arg, args);
492 va_end(args);
493 if(buf == NULL)
494 return;
495 sendadc(sk, buf);
496 free(buf);
497}
498
499static char **parseadc(char *args)
500{
501 char **retbuf;
502 size_t retbufsize, retbufdata;
503 char *buf;
504 size_t bufsize, bufdata;
505 int state;
506
507 retbuf = NULL;
508 buf = NULL;
509 retbufsize = retbufdata = bufsize = bufdata = 0;
510 state = 0;
511 while(state != 3)
512 {
513 switch(state)
514 {
515 case 0:
516 if(*args == 0)
517 state = 3;
518 else if(*args != ' ')
519 state = 1;
520 break;
521 case 1:
522 if((*args == ' ') || (*args == 0))
523 {
524 addtobuf(buf, 0);
525 addtobuf(retbuf, buf);
526 buf = NULL;
527 bufsize = bufdata = 0;
528 if(*args == 0)
529 state = 3;
530 } else if(*args == '\\') {
531 state = 2;
532 } else {
533 addtobuf(buf, *args);
534 }
535 args++;
536 break;
537 case 2:
538 if(*args == 0)
539 {
540 if(buf != NULL)
541 free(buf);
542 addtobuf(retbuf, NULL);
543 freeparr(retbuf);
544 return(NULL);
f24d5cfb 545 } else if((*args == 's') || (*args == ' ')) {
d3372da9 546 addtobuf(buf, ' ');
547 } else if(*args == 'n') {
548 addtobuf(buf, '\n');
549 } else if(*args == '\\') {
550 addtobuf(buf, '\\');
551 }
a478552c 552 args++;
d3372da9 553 state = 1;
a478552c 554 break;
d3372da9 555 }
556 }
557 if(buf != NULL)
558 free(buf);
559 addtobuf(retbuf, NULL);
560 return(retbuf);
561}
562
563/* Macros useful in command handlers */
564#define skipspace(s) ({if(((s) = strchr((s), ' ')) == NULL) return; else (s)++;})
565#define qstr(sk, str) sockqueue(sk, str, strlen(str))
566#define qstrf(sk, strandargs...) \
567do { \
568 char *__buf__; \
569 if((__buf__ = sprintf2(strandargs)) != NULL) { \
570 sockqueue(sk, __buf__, strlen(__buf__)); \
571 free(__buf__); \
572 } \
573} while(0)
574
575static char *tr(char *str, char *trans)
576{
577 char *p;
578
579 for(; *trans; trans += 2)
580 {
581 for(p = strchr(str, trans[0]); p != NULL; p = strchr(p, trans[0]))
582 *p = trans[1];
583 }
584 return(str);
585}
586
9a2d6cb8 587static char *getadcid(struct dcpeer *peer)
588{
589 char *buf;
590 char *ret;
d57f938a 591 int isfilelist;
9a2d6cb8 592
2a157d1a 593 isfilelist = 0;
d57f938a 594 if(!wcscmp(peer->transfer->path, L"files.xml") || !wcscmp(peer->transfer->path, L"files.xml.bz2") || !wcscmp(peer->transfer->path, L"MyList.DcLst"))
595 isfilelist = 1;
596 if(!isfilelist && (peer->transfer->hash != NULL) && isdchash(peer->transfer->hash) && supports(peer, "tthf"))
9a2d6cb8 597 {
598 buf = base32encode(peer->transfer->hash->buf, 24);
599 ret = sprintf2("TTH/%.39s", buf);
600 free(buf);
601 } else {
602 if((buf = icwcstombs(peer->transfer->path, "UTF-8")) == NULL)
603 return(NULL);
604 ret = pathnmdc2adc(buf);
605 free(buf);
606 }
607 return(ret);
608}
609
610
d3372da9 611static int trresumecb(struct transfer *transfer, wchar_t *cmd, wchar_t *arg, struct dcpeer *peer)
612{
613 if(!wcscmp(cmd, L"resume"))
614 {
615 if(arg == NULL)
616 {
617 flog(LOG_WARNING, "filter returned no position for \"resume\" on transfer %i", transfer->id);
618 freedcpeer(peer);
619 } else {
620 transfer->curpos = wcstol(arg, NULL, 10);
9a2d6cb8 621 peer->hascurpos = 1;
622 requestfile(peer);
d3372da9 623 }
d3372da9 624 return(1);
625 }
626 return(0);
627}
628
9a2d6cb8 629static void sendmynick(struct dcpeer *peer)
d3372da9 630{
1d85f24b 631 struct fnetnode *fn;
d3372da9 632
1d85f24b 633 fn = peer->fn;
634 if(fn == NULL)
635 qstrf(peer->sk, "$MyNick %s|", icswcstombs(confgetstr("cli", "defnick"), peer->charset, "DoldaConnectUser-IN"));
9a2d6cb8 636 else
1d85f24b 637 qstrf(peer->sk, "$MyNick %s|", icswcstombs(fn->mynick, peer->charset, "DoldaConnectUser-IN"));
9a2d6cb8 638}
639
640static void sendpeerlock(struct dcpeer *peer)
641{
1c4b02cd 642 if(peer->dcppemu)
643 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DCPLUSPLUS0.674ABCABC|");
644 else
645 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DOLDA%sABCABCABC|", VERSION);
9a2d6cb8 646}
647
648static void sendsupports(struct dcpeer *peer)
649{
1c4b02cd 650 if(peer->dcppemu)
651 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG |");
652 else
653 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG|");
9a2d6cb8 654}
655
656static void requestfile(struct dcpeer *peer)
657{
658 char *buf;
659
660 if(peer->transfer->size == -1)
d3372da9 661 {
1d85f24b 662 /* Use DCCHARSET for $Get paths until further researched... */
9a2d6cb8 663 if((buf = icswcstombs(peer->transfer->path, DCCHARSET, NULL)) == NULL)
d3372da9 664 {
9a2d6cb8 665 transferseterror(peer->transfer, TRNSE_NOTFOUND);
666 freedcpeer(peer);
d3372da9 667 return;
668 }
9a2d6cb8 669 /* The transfer will be restarted later from
670 * cmd_filelength when it detects that the sizes
671 * don't match. */
672 qstrf(peer->sk, "$Get %s$1|", buf);
673 return;
d3372da9 674 }
9a2d6cb8 675 if((peer->transfer->hash == NULL) && !peer->notthl)
d3372da9 676 {
9a2d6cb8 677 if(supports(peer, "adcget") && supports(peer, "tthl"))
d3372da9 678 {
9a2d6cb8 679 qstr(peer->sk, "$ADCGET");
680 sendadc(peer->sk, "tthl");
681 if((buf = getadcid(peer)) == NULL)
d3372da9 682 {
9a2d6cb8 683 transferseterror(peer->transfer, TRNSE_NOTFOUND);
d3372da9 684 freedcpeer(peer);
685 return;
686 }
9a2d6cb8 687 sendadc(peer->sk, buf);
688 free(buf);
689 sendadc(peer->sk, "0");
690 sendadc(peer->sk, "-1");
691 qstr(peer->sk, "|");
df873cd0 692 peer->fetchingtthl = 1;
9a2d6cb8 693 return;
694 }
695 }
696 if(!peer->hascurpos)
697 {
698 if(forkfilter(peer->transfer))
699 {
700 flog(LOG_WARNING, "could not fork filter for transfer %i: %s", peer->transfer->id, strerror(errno));
701 freedcpeer(peer);
702 return;
d3372da9 703 }
9a2d6cb8 704 CBREG(peer->transfer, trans_filterout, (int (*)(struct transfer *, wchar_t *, wchar_t *, void *))trresumecb, NULL, peer);
705 return;
706 }
707 if(supports(peer, "adcget"))
708 {
709 qstr(peer->sk, "$ADCGET");
710 sendadc(peer->sk, "file");
711 if((buf = getadcid(peer)) == NULL)
712 {
713 transferseterror(peer->transfer, TRNSE_NOTFOUND);
714 freedcpeer(peer);
715 return;
716 }
717 sendadc(peer->sk, buf);
718 free(buf);
719 sendadcf(peer->sk, "%i", peer->transfer->curpos);
720 sendadcf(peer->sk, "%i", peer->transfer->size - peer->transfer->curpos);
721 qstr(peer->sk, "|");
722 } else if(supports(peer, "xmlbzlist")) {
723 if((buf = icswcstombs(peer->transfer->path, "UTF-8", NULL)) == NULL)
724 {
725 transferseterror(peer->transfer, TRNSE_NOTFOUND);
726 freedcpeer(peer);
727 return;
728 }
729 qstrf(peer->sk, "$UGetBlock %i %i %s|", peer->transfer->curpos, peer->transfer->size - peer->transfer->curpos, buf);
d3372da9 730 } else {
1d85f24b 731 /* Use DCCHARSET for $Get paths until further researched... */
9a2d6cb8 732 if((buf = icswcstombs(peer->transfer->path, DCCHARSET, NULL)) == NULL)
d3372da9 733 {
9a2d6cb8 734 transferseterror(peer->transfer, TRNSE_NOTFOUND);
735 freedcpeer(peer);
736 return;
d3372da9 737 }
9a2d6cb8 738 qstrf(peer->sk, "$Get %s$%i|", buf, peer->transfer->curpos + 1);
d3372da9 739 }
740}
741
742static void sendmyinfo(struct socket *sk, struct fnetnode *fn)
743{
744 struct dchub *hub;
745 char *buf;
746 struct fnetnode *cfn;
69757b8c 747 int hn1, hn2, hn3;
d3372da9 748
749 hub = fn->data;
750 qstrf(sk, "$MyINFO $ALL %s ", hub->nativenick);
1d85f24b 751 buf = tr(icswcstombs(confgetstr("dc", "desc"), hub->charset, "Charset_conv_failure"), "$_|_");
d3372da9 752 qstrf(sk, "%s", buf);
69757b8c 753 hn1 = hn2 = hn3 = 0;
d3372da9 754 for(cfn = fnetnodes; cfn != NULL; cfn = cfn->next)
755 {
756 if((cfn->state == FNN_EST) || (cfn->state == FNN_HS))
69757b8c 757 {
758 if(cfn->regstatus == FNNS_OP)
759 hn3++;
760 else if(cfn->regstatus == FNNS_REG)
761 hn2++;
762 else
763 hn1++;
764 }
d3372da9 765 }
69757b8c 766 qstrf(sk, "<%s V:%s,M:%c,H:%i/%i/%i,S:%i>",
1c4b02cd 767 (hub->dcppemu)?"++":"Dolda",
768 (hub->dcppemu)?"0.674":VERSION,
d3372da9 769 (tcpsock == NULL)?'P':'A',
69757b8c 770 hn1, hn2, hn3,
d3372da9 771 confgetint("transfer", "slots")
772 );
773 qstrf(sk, "$ $");
1d85f24b 774 buf = tr(icswcstombs(confgetstr("dc", "speedstring"), hub->charset, "Charset_conv_failure"), "$_|_");
d3372da9 775 qstrf(sk, "%s\x01$", buf);
1d85f24b 776 buf = tr(icswcstombs(confgetstr("dc", "email"), hub->charset, "Charset_conv_failure"), "$_|_");
d3372da9 777 qstrf(sk, "%s$", buf);
778 qstrf(sk, "%llu$|", sharesize);
779}
780
781static void hubhandleaction(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
782{
783 struct dchub *hub;
784
785 hub = fn->data;
786 if(!strcmp(cmd, "$Lock"))
787 {
788 qstrf(sk, "$ValidateNick %s|", hub->nativenick);
789 } else if(!strcmp(cmd, "$Hello")) {
790 if(fn->state == FNN_HS)
791 {
792 qstrf(sk, "$Version 1,0091|");
793 qstrf(sk, "$GetNickList|");
794 sendmyinfo(sk, fn);
795 fnetsetstate(fn, FNN_EST);
796 } else {
797 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
798 }
799 }
800}
801
802static void cmd_lock(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
803{
804 struct dchub *hub;
805 char *key;
806 char *p;
807
808 hub = fn->data;
809 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
810 hub->extended = 1;
811 if((p = strchr(args, ' ')) != NULL)
812 *(p++) = 0;
813 if(hub->extended)
814 {
1c4b02cd 815 if(hub->dcppemu)
816 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock |");
817 else
818 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock|");
d3372da9 819 }
820 key = dcmakekey(args);
821 qstrf(sk, "$Key %s|", key);
822 free(key);
823 hubhandleaction(sk, fn, cmd, args);
824}
825
826static void cmd_hubname(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
827{
828 wchar_t *buf;
829 struct dchub *hub;
830
831 hub = fn->data;
832 if(hub->nativename == NULL)
833 free(hub->nativename);
834 hub->nativename = sstrdup(args);
1d85f24b 835 buf = icmbstowcs(args, hub->charset);
d3372da9 836 fnetsetname(fn, (buf == NULL)?L"Hubname conv error":buf);
837 if(buf != NULL)
838 free(buf);
839 hubhandleaction(sk, fn, cmd, args);
840}
841
842static void cmd_hello(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
843{
844 wchar_t *nick;
845 struct dchub *hub;
846
847 hub = fn->data;
1d85f24b 848 if((nick = icmbstowcs(args, hub->charset)) == NULL)
d3372da9 849 return;
850 if(strcmp(args, hub->nativenick) && (fnetfindpeer(fn, nick) == NULL))
851 fnetaddpeer(fn, nick, nick);
852 free(nick);
853 hubhandleaction(sk, fn, cmd, args);
854}
855
856static void cmd_quit(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
857{
858 wchar_t *nick;
859 struct fnetpeer *peer;
860 struct dchub *hub;
861
862 hub = fn->data;
1d85f24b 863 if((nick = icmbstowcs(args, hub->charset)) == NULL)
d3372da9 864 return;
865 if((peer = fnetfindpeer(fn, nick)) != NULL)
866 fnetdelpeer(peer);
867 free(nick);
868 hubhandleaction(sk, fn, cmd, args);
869}
870
871static void cmd_nicklist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
872{
873 struct dchub *hub;
874 char *p;
875 wchar_t *buf;
876 struct fnetpeer *peer, *npeer;
877
878 hub = fn->data;
879 for(peer = fn->peers; peer != NULL; peer = peer->next)
880 peer->flags.b.delete = 1;
881 while((p = strstr(args, "$$")) != NULL)
882 {
883 *p = 0;
1d85f24b 884 if((buf = icmbstowcs(args, hub->charset)) != NULL)
d3372da9 885 {
886 if((peer = fnetfindpeer(fn, buf)) == NULL)
887 peer = fnetaddpeer(fn, buf, buf);
888 else
889 peer->flags.b.delete = 0;
890 free(buf);
891 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
892 }
893 args = p + 2;
894 }
895 for(peer = fn->peers; peer != NULL; peer = npeer)
896 {
897 npeer = peer->next;
898 if(peer->flags.b.delete)
899 fnetdelpeer(peer);
900 }
901 hubhandleaction(sk, fn, cmd, args);
902}
903
904static void cmd_oplist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
905{
906 struct dchub *hub;
907 char *p;
908 wchar_t *buf;
909 struct fnetpeer *peer;
910
911 hub = fn->data;
912 for(peer = fn->peers; peer != NULL; peer = peer->next)
913 peer->flags.b.op = 0;
914 while((p = strstr(args, "$$")) != NULL)
915 {
916 *p = 0;
1d85f24b 917 if((buf = icmbstowcs(args, hub->charset)) != NULL)
d3372da9 918 {
919 if((peer = fnetfindpeer(fn, buf)) != NULL)
920 peer->flags.b.op = 1;
921 free(buf);
922 }
923 args = p + 2;
924 }
925 hubhandleaction(sk, fn, cmd, args);
926}
927
928static void cmd_myinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
929{
930 char *p, *p2;
931 wchar_t *buf, *wp, *wp2;
932 wchar_t abuf[10];
933 struct fnetpeer *peer;
934 struct dchub *hub;
935
936 hub = fn->data;
937 p = args;
938 if(strncmp(p, "$ALL ", 5))
939 return;
940 p += 5;
941 if((p2 = strchr(p, ' ')) == NULL)
942 return;
943 *p2 = 0;
1d85f24b 944 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 945 return;
946 if((peer = fnetfindpeer(fn, buf)) == NULL)
947 peer = fnetaddpeer(fn, buf, buf);
948 free(buf);
949 p = p2 + 1;
950 if((p2 = strstr(p, "$ $")) == NULL)
951 return;
952 *p2 = 0;
1d85f24b 953 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 954 return;
316e9a13 955 if((wcslen(buf) > 0) && (buf[wcslen(buf) - 1] == L'>') && ((wp = wcsrchr(buf, L'<')) != NULL))
d3372da9 956 {
957 buf[wcslen(buf) - 1] = L'\0';
958 *(wp++) = L'\0';
959 if((wp2 = wcschr(wp, L' ')) != NULL)
960 {
961 *(wp2++) = L'\0';
962 fnetpeersetstr(peer, L"dc-client", wp);
963 wp = wp2;
964 do
965 {
966 if((wp2 = wcschr(wp, L',')) != NULL)
967 *(wp2++) = L'\0';
968 if(wp[1] != L':')
969 continue;
970 swprintf(abuf, 10, L"dc-tag-%lc", wp[0]);
971 fnetpeersetstr(peer, abuf, wp + 2);
972 wp = wp2;
973 } while(wp2 != NULL);
974 }
975 }
976 fnetpeersetstr(peer, L"descr", buf);
977 free(buf);
978 p = p2 + 3;
979 if((p2 = strchr(p, '$')) == NULL)
980 return;
981 *(p2 - 1) = 0;
1d85f24b 982 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 983 return;
984 fnetpeersetstr(peer, L"dc-speed", buf);
985 free(buf);
986 p = p2 + 1;
987 if((p2 = strchr(p, '$')) == NULL)
988 return;
989 *p2 = 0;
1d85f24b 990 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 991 return;
992 fnetpeersetstr(peer, L"email", buf);
993 free(buf);
994 p = p2 + 1;
995 if(strlen(p) < 1)
996 return;
997 fnetpeersetlnum(peer, L"share", strtoll(p, NULL, 10));
998 hubhandleaction(sk, fn, cmd, args);
999}
1000
1001/* I do not implement the fully in that I do not disconnect from the
1002 * old hub. I do this since I believe that if the hub owner really
1003 * wants to get rid of us, then it is his responsibility to disconnect
1004 * us. */
1005static void cmd_forcemove(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1006{
1007 struct dchub *hub;
1008 struct fnetnode *newfn;
1009 int freeargs;
1010
1011 hub = fn->data;
1012 if(strchr(args, ':') == NULL)
1013 {
1014 args = strcpy(smalloc(strlen(args) + 5), args);
1015 strcat(args, ":411");
1016 freeargs = 1;
1017 } else {
1018 freeargs = 0;
1019 }
efc05613 1020 if((newfn = fnetinitconnect(L"dc", args, NULL)) != NULL)
d3372da9 1021 {
1022 linkfnetnode(newfn);
1023 putfnetnode(newfn);
1024 }
1025 hubhandleaction(sk, fn, cmd, args);
1026 if(freeargs)
1027 free(args);
1028}
1029
1d85f24b 1030static char *getdcpath(struct sharecache *node, size_t *retlen, char *charset)
d3372da9 1031{
1032 char *buf, *buf2;
1033 size_t len, len2;
1034
1035 if(node->parent == NULL)
1036 return(NULL);
1037 if(node->parent == shareroot)
1038 {
1d85f24b 1039 if((buf = icwcstombs(node->name, charset)) == NULL)
d3372da9 1040 return(NULL);
1041 if(retlen != NULL)
1042 *retlen = strlen(buf);
1043 return(buf);
1044 } else {
1d85f24b 1045 if((buf2 = icwcstombs(node->name, charset)) == NULL)
d3372da9 1046 return(NULL);
1d85f24b 1047 if((buf = getdcpath(node->parent, &len, charset)) == NULL)
d3372da9 1048 {
1049 free(buf2);
1050 return(NULL);
1051 }
1052 len2 = strlen(buf2);
1053 buf = srealloc(buf, len + 1 + len2 + 1);
1054 buf[len++] = '\\';
1055 strcpy(buf + len, buf2);
1056 buf[len + len2] = 0;
1057 free(buf2);
1058 if(retlen != NULL)
1059 *retlen = len + len2;
1060 return(buf);
1061 }
1062}
1063
1064/*
1065 * This is the main share searching function for Direct Connect
1066 * peers. Feel free to optimize it if you feel the need for it. I
1067 * haven't ever seen it take any noticable CPU time anyway, so I
1068 * haven't felt that need.
1069 *
1070 * It may feel dubious to just return the directory when all terms are
1071 * satisfied rather than all the files in it, but it really benefits
1072 * everyone: Less cycles used for us, less UDP squelching for active
1073 * searchers, and less bandwidth waste for hubs when serving passive
1074 * searchers.
1075 */
1076static void cmd_search(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1077{
1078 int i, done;
1079 struct dchub *hub;
1080 char *p, *p2;
1081 char *prefix, *infix, *postfix, *buf, *buf2;
1082 struct socket *dsk;
1083 struct sockaddr_in addr;
1084 struct sharecache *node;
1085 int minsize, maxsize;
1086 int dotth, buflen;
1087 int termnum, satisfied, skipcheck;
1088 int level, tersat[32];
1089 wchar_t *terms[32];
1090 char hashtth[24];
1091
1092 hub = fn->data;
1093 if((p = strchr(args, ' ')) == NULL)
1094 return;
1095 *(p++) = 0;
1096
1097 memset(terms, 0, sizeof(terms));
1098 prefix = infix = postfix = NULL;
1099 dsk = NULL;
1100 dotth = 0;
1101
1102 if(!strncmp(args, "Hub:", 4))
1103 {
1104 if(!strcmp(cmd, "$MultiSearch"))
1105 goto out;
1106 if(!strcmp(args + 4, hub->nativenick))
1107 goto out;
1108 prefix = sprintf2("$SR %s ", hub->nativenick);
1109 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1110 postfix = sprintf2(" (%s)\005%s|", formataddress(fn->sk->remote, fn->sk->remotelen), args + 4);
1111 dsk = sk;
1112 getsock(dsk);
1113 } else {
1114 if((p2 = strchr(args, ':')) == NULL)
1115 goto out;
1116 *(p2++) = 0;
1117 addr.sin_family = AF_INET;
1118 if(!inet_aton(args, &addr.sin_addr))
1119 goto out;
1120 addr.sin_port = htons(atoi(p2));
1121 prefix = sprintf2("$SR %s ", hub->nativenick);
1122 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1123 postfix = sprintf2(" (%s)|", formataddress(fn->sk->remote, fn->sk->remotelen));
1124 netdgramconn(dsk = netdupsock(udpsock), (struct sockaddr *)&addr, sizeof(addr));
1125 }
1126
1127 minsize = maxsize = -1;
1128 if(*p == 0)
1129 goto out;
1130 if(*(p++) == 'T')
1131 minsize = 0;
1132 if(*(p++) != '?')
1133 goto out;
1134 if(*p == 0)
1135 goto out;
9d8cf743 1136 if((*(p++) == 'T') && (minsize == 0))
d3372da9 1137 {
1138 maxsize = 0;
1139 minsize = -1;
1140 }
1141 if(*(p++) != '?')
1142 goto out;
1143 if((p2 = strchr(p, '?')) == NULL)
1144 goto out;
1145 *(p2++) = 0;
1146 if(minsize == 0)
1147 minsize = atoi(p);
1148 if(maxsize == 0)
1149 maxsize = atoi(p);
1150 p = p2 + 1;
1151 if(*(p++) != '?')
1152 goto out;
1153 termnum = 0;
1154 p2 = p;
1155 done = 0;
1156 while(!done)
1157 {
1158 if((*p2 == 0) || (*p2 == '$'))
1159 {
1160 if(*p2 == 0)
1161 done = 1;
1162 else
1163 *p2 = 0;
1164 if(*p)
1165 {
1166 if(!dotth && !strncmp(p, "TTH:", 4))
1167 {
1168 dotth = 1;
1169 if((buf = base32decode(p + 4, &buflen)) == NULL)
1170 goto out;
1171 if(buflen != 24)
1172 goto out;
1173 memcpy(hashtth, buf, 24);
1174 free(buf);
1175 } else {
1d85f24b 1176 if((terms[termnum] = icmbstowcs(p, hub->charset)) != NULL)
d3372da9 1177 termnum++;
1178 }
1179 }
1180 p = p2 + 1;
1181 if(termnum == 32)
1182 break;
1183 }
1184 p2++;
1185 }
1186
1187 node = shareroot->child;
1188 level = 0;
1189 for(i = 0; i < termnum; i++)
1190 tersat[i] = -1;
1191 satisfied = 0;
1192 while(1)
1193 {
1194 skipcheck = 0;
1195 if(node->f.b.type == FILE_REG)
1196 {
1197 if((minsize >= 0) && (node->size < minsize))
1198 skipcheck = 1;
1199 if((maxsize >= 0) && (node->size > maxsize))
1200 skipcheck = 1;
1201 }
1202 if(!skipcheck && dotth)
1203 {
1204 if((node->f.b.type != FILE_REG) || (node->f.b.hastth && memcmp(hashtth, node->hashtth, 24)))
1205 skipcheck = 1;
1206 }
1207 if(!skipcheck)
1208 {
1209 for(i = 0; i < termnum; i++)
1210 {
1211 if(tersat[i] >= 0)
1212 continue;
1213 if(wcsexists(node->name, terms[i]))
1214 {
1215 tersat[i] = level;
1216 satisfied++;
1217 } else if(node->child == NULL) {
1218 break;
1219 }
1220 }
1221 }
1222 if(!skipcheck && (satisfied == termnum))
1223 {
1d85f24b 1224 /* Use DCCHARSET in $Get paths until further researched... */
1225 if((buf = getdcpath(node, NULL, DCCHARSET)) != NULL)
d3372da9 1226 {
1227 if(node->f.b.hastth)
1228 {
1229 buf2 = base32encode(node->hashtth, 24);
1230 qstrf(dsk, "%s%s\005%i%sTTH:%.39s%s", prefix, buf, node->size, infix, buf2, postfix);
1231 free(buf2);
1232 } else {
1233 qstrf(dsk, "%s%s\005%i%s%s%s", prefix, buf, node->size, infix, hub->nativename, postfix);
1234 }
1235 free(buf);
1236 }
1237 }
1238 if((!skipcheck && (satisfied == termnum)) || (node->child == NULL))
1239 {
1240 while(node->next == NULL)
1241 {
1242 if((node = node->parent) == shareroot)
1243 break;
1244 level--;
1245 }
1246 if(node == shareroot)
1247 break;
1248 for(i = 0; i < termnum; i++)
1249 {
1250 if(tersat[i] >= level)
1251 {
1252 tersat[i] = -1;
1253 satisfied--;
1254 }
1255 }
1256 node = node->next;
1257 } else {
1258 node = node->child;
1259 level++;
1260 }
1261 }
1262
1263 hubhandleaction(sk, fn, cmd, args);
1264
1265 out:
1266 if(dsk != NULL)
1267 putsock(dsk);
1268 if(prefix != NULL)
1269 free(prefix);
1270 if(infix != NULL)
1271 free(infix);
1272 if(postfix != NULL)
1273 free(postfix);
1274 for(i = 0; (i < 32) && (terms[i] != NULL); i++)
1275 free(terms[i]);
1276}
1277
1278static void cmd_connecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1279{
1280 char *p;
1281 struct dchub *hub;
1282 struct socket *newsk;
1283 struct sockaddr_in addr;
1284
1285 hub = fn->data;
1286 if((p = strchr(args, ' ')) == NULL)
1287 return;
1288 *(p++) = 0;
1289 if(strcmp(args, hub->nativenick))
1290 return;
1291 addr.sin_family = AF_INET;
1292 args = p;
1293 if((p = strchr(args, ':')) == NULL)
1294 return;
1295 *(p++) = 0;
1296 addr.sin_port = htons(atoi(p));
1297 if(!inet_aton(args, &addr.sin_addr))
1298 return;
1299 newsk = netcsconn((struct sockaddr *)&addr, sizeof(addr), (void (*)(struct socket *, int, void *))peerconnect, fn);
1300 getfnetnode(fn);
1301 hubhandleaction(sk, fn, cmd, args);
1302}
1303
1304static void sendctm(struct socket *sk, char *nick)
1305{
1306 struct sockaddr *addr;
1307 socklen_t addrlen;
1308
1309 if(tcpsock == NULL)
1310 return;
1311 if(sockgetremotename(tcpsock, &addr, &addrlen) < 0)
1312 return;
1313 if(addr->sa_family == AF_INET)
1314 qstrf(sk, "$ConnectToMe %s %s|", nick, formataddress(addr, addrlen));
1315 else
1316 flog(LOG_WARNING, "Direct Connect TCP socket is suddenly not AF_INET, but %i", addr->sa_family);
1317 free(addr);
1318}
1319
1320static void cmd_revconnecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1321{
1322 struct dchub *hub;
1323 char *p;
1324
1325 hub = fn->data;
1326 if((p = strchr(args, ' ')) == NULL)
1327 return;
1328 *(p++) = 0;
1329 if(strcmp(p, hub->nativenick))
1330 return;
1331 sendctm(sk, args);
1332 expectpeer(args, fn);
1333 hubhandleaction(sk, fn, cmd, args);
1334}
1335
1336static void cmd_getnetinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1337{
1338 struct dchub *hub;
1339 struct fnetnode *node;
1340 int numhubs;
1341
1342 hub = fn->data;
1343 numhubs = 0;
1344 for(node = fnetnodes; node != NULL; node = node->next)
1345 {
1346 if(node->state == FNN_EST)
1347 numhubs++;
1348 }
1349 qstrf(sk, "$NetInfo %i$%i$%c$0|", confgetint("transfer", "slots"), numhubs, (tcpsock == NULL)?'P':'A');
1350 hubhandleaction(sk, fn, cmd, args);
1351}
1352
1353static void cmd_to(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1354{
1355 struct dchub *hub;
1356 char *p, *p2;
1357
1358 hub = fn->data;
1359 p = args;
1360 if((p2 = strchr(p, ' ')) == NULL)
1361 return;
1362 *(p2++) = 0;
1363 p = p2;
1364 if((p2 = strchr(p, ' ')) == NULL)
1365 return;
1366 *(p2++) = 0;
1367 if(strcmp(p, "From:"))
1368 return;
1369 p = p2;
1370 if((p2 = strstr(p, " $")) == NULL)
1371 return;
1372 *p2 = 0;
1373 p2 += 2;
1374 hubrecvchat(fn->sk, fn, p, p2);
1375 hubhandleaction(sk, fn, cmd, args);
1376}
1377
1378static void cmd_sr(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1379{
1380 struct dchub *hub;
d86b7a9f 1381 char *p, *p2, *buf;
d3372da9 1382 char *nick, *filename, *hubname;
1383 int size, slots;
d86b7a9f 1384 size_t buflen;
d3372da9 1385 struct srchres *sr;
1386 wchar_t *wnick, *wfile;
1387
1388 hub = fn->data;
1389 nick = p = args;
1390 if((p2 = strchr(p, ' ')) == NULL)
1391 return;
1392 *p2 = 0;
1393 p = p2 + 1;
1394 filename = p;
1395 if((p2 = strchr(p, 5)) == NULL)
1396 return;
1397 *p2 = 0;
1398 p = p2 + 1;
1399 if((p2 = strchr(p, ' ')) == NULL)
1400 return;
1401 *p2 = 0;
1402 size = atoi(p);
1403 p = p2 + 1;
1404 if((p2 = strchr(p, '/')) == NULL)
1405 return;
1406 *p2 = 0;
1407 slots = atoi(p);
1408 p = p2 + 1;
1409 if((p2 = strchr(p, 5)) == NULL)
1410 return;
1411 p = p2 + 1;
1412 hubname = p;
1413 if((p2 = strstr(p, " (")) == NULL)
1414 return;
1415 *p2 = 0;
1d85f24b 1416 if((wnick = icmbstowcs(nick, hub->charset)) == NULL)
d3372da9 1417 return;
1d85f24b 1418 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 1419 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
1420 {
1421 free(wnick);
1422 return;
1423 }
1424 sr = newsrchres(&dcnet, wfile, wnick);
1425 if(sr->peernick != NULL)
1426 free(sr->peernick);
1427 sr->peernick = swcsdup(wnick);
1428 sr->size = size;
1429 sr->slots = slots;
1430 free(wfile);
1431 free(wnick);
d86b7a9f 1432 if(!strncmp(hubname, "TTH:", 4))
1433 {
1434 if((buf = base32decode(hubname + 4, &buflen)) != NULL)
1435 {
1436 if(buflen == 24)
1437 sr->hash = newhash(L"TTH", 24, buf);
1438 free(buf);
1439 }
1440 }
d3372da9 1441 getfnetnode(sr->fn = fn);
1442 submitsrchres(sr);
1443 freesrchres(sr);
1444 hubhandleaction(sk, fn, cmd, args);
1445}
1446
1447static void cmd_usercommand(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1448{
1449 /* Do nothing for now. */
1450}
1451
48509089 1452static void cmd_getpass(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1453{
1454 struct dchub *hub;
1c4b02cd 1455 wchar_t *pw;
48509089 1456 char *mbspw;
1457
1458 hub = fn->data;
1c4b02cd 1459 pw = wpfind(fn->args, L"password");
1d85f24b 1460 if((pw == NULL) || ((mbspw = icwcstombs(pw, hub->charset)) == NULL))
48509089 1461 {
1462 killfnetnode(fn);
1463 return;
1464 }
1465 qstrf(sk, "$MyPass %s|", mbspw);
1466 free(mbspw);
fcd0627b 1467 fn->regstatus = FNNS_REG;
48509089 1468 hubhandleaction(sk, fn, cmd, args);
1469}
1470
c9b3ad74 1471static void cmd_logedin(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1472{
1473 struct dchub *hub;
1474
1475 hub = fn->data;
fcd0627b 1476 fn->regstatus = FNNS_OP;
c9b3ad74 1477 hubhandleaction(sk, fn, cmd, args);
1478}
1479
d3372da9 1480static void cmd_mynick(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1481{
9a2d6cb8 1482 struct dcexppeer *expect;
1c4b02cd 1483 struct dchub *hub;
9a2d6cb8 1484
d3372da9 1485 if(peer->nativename != NULL)
1486 free(peer->nativename);
1487 peer->nativename = sstrdup(args);
1488 if(peer->wcsname != NULL)
1489 free(peer->wcsname);
1d85f24b 1490 if((peer->wcsname = icmbstowcs(peer->nativename, peer->charset)) == NULL)
d3372da9 1491 {
1492 freedcpeer(peer);
1493 return;
1494 }
9a2d6cb8 1495 if(peer->accepted)
1496 {
1497 for(expect = expected; expect != NULL; expect = expect->next)
1498 {
1499 if(!strcmp(expect->nick, args))
1500 break;
1501 }
1502 if(expect == NULL)
1503 {
1504 peer->fn = NULL;
1505 } else {
1c4b02cd 1506 hub = expect->fn->data;
9a2d6cb8 1507 peer->fn = expect->fn;
1508 getfnetnode(peer->fn);
1c4b02cd 1509 peer->dcppemu = hub->dcppemu;
9a2d6cb8 1510 freeexppeer(expect);
1511 }
1512 }
d3372da9 1513}
1514
1515static void cmd_direction(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1516{
1517 char *p;
9a2d6cb8 1518 int mydir;
1519 struct transfer *transfer;
d3372da9 1520
1521 if((p = strchr(args, ' ')) == NULL)
1522 return;
1523 *p = 0;
1524 if(!strcmp(args, "Upload"))
9a2d6cb8 1525 mydir = TRNSD_DOWN;
d3372da9 1526 if(!strcmp(args, "Download"))
9a2d6cb8 1527 mydir = TRNSD_UP;
1528 if(peer->accepted)
1529 {
1530 if((peer->transfer == NULL) || (mydir != peer->direction))
1531 {
1532 freedcpeer(peer);
1533 return;
1534 }
1b14d3d8 1535 if(peer->direction == TRNSD_DOWN)
1536 requestfile(peer);
9a2d6cb8 1537 } else {
1538 if(peer->wcsname == NULL)
1539 {
1540 freedcpeer(peer);
1541 return;
1542 }
1543 peer->direction = mydir;
1544 if(peer->direction == TRNSD_UP)
1545 {
1546 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1547 } else {
1548 if((transfer = finddownload(peer->wcsname)) == NULL)
1549 {
1550 freedcpeer(peer);
1551 return;
1552 }
1553 transferattach(transfer, &dctransfer, peer);
1554 transfersetstate(transfer, TRNS_HS);
1555 }
1556 transfersetnick(transfer, peer->wcsname);
1557 peer->transfer = transfer;
1558 if(peer->extended)
1559 sendsupports(peer);
1560 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1561 if(peer->key != NULL)
1562 qstrf(sk, "$Key %s|", peer->key);
1563 if(peer->direction == TRNSD_DOWN)
1564 requestfile(peer);
1565 }
d3372da9 1566}
1567
1568static void cmd_peerlock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1569{
9a2d6cb8 1570 char *p, *key;
1571 struct transfer *transfer;
d3372da9 1572
1573 if((p = strchr(args, ' ')) == NULL)
1574 return;
1575 *p = 0;
1576 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
1577 peer->extended = 1;
9a2d6cb8 1578 key = dcmakekey(args);
1579 if(peer->accepted)
1580 {
1581 if(peer->wcsname == NULL)
1582 {
1583 freedcpeer(peer);
1584 return;
1585 }
1586 sendmynick(peer);
1587 sendpeerlock(peer);
1588 if(peer->extended)
1589 sendsupports(peer);
1590 if((transfer = finddownload(peer->wcsname)) == NULL)
1591 {
1592 peer->direction = TRNSD_UP;
1593 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1594 } else {
1595 peer->direction = TRNSD_DOWN;
1596 transferattach(transfer, &dctransfer, peer);
1597 transfersetstate(transfer, TRNS_HS);
1598 }
1599 transfersetnick(transfer, peer->wcsname);
1600 peer->transfer = transfer;
1601 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1602 qstrf(sk, "$Key %s|", key);
62da2712 1603 free(key);
9a2d6cb8 1604 } else {
1605 if(peer->key != NULL)
1606 free(peer->key);
1607 peer->key = key;
1608 }
d3372da9 1609}
1610
1611static void cmd_key(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1612{
9a2d6cb8 1613 /* NOP */
1614}
1615
1616static void startdl(struct dcpeer *peer)
1617{
1e9d82b1 1618 if(peer->timeout != NULL)
1619 canceltimer(peer->timeout);
9a2d6cb8 1620 peer->state = PEER_TRNS;
1621 transferstartdl(peer->transfer, peer->sk);
1622 peer->sk->readcb = (void (*)(struct socket *, void *))transread;
1623 peer->sk->errcb = (void (*)(struct socket *, int, void *))transerr;
1624}
1625
1626static void startul(struct dcpeer *peer)
1627{
1e9d82b1 1628 if(peer->timeout != NULL)
1629 canceltimer(peer->timeout);
9a2d6cb8 1630 peer->state = PEER_TRNS;
1631 transferstartul(peer->transfer, peer->sk);
1632 peer->sk->writecb = (void (*)(struct socket *, void *))transwrite;
d3372da9 1633}
1634
1635static void cmd_filelength(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1636{
1637 int size;
1fc81821 1638 struct transfer *transfer;
d3372da9 1639
1640 if(peer->transfer == NULL)
1641 {
1642 freedcpeer(peer);
1643 return;
1644 }
1645 size = atoi(args);
9a2d6cb8 1646 if(peer->transfer->size != size)
d3372da9 1647 {
d3372da9 1648 transfersetsize(peer->transfer, size);
1fc81821 1649 transfer = peer->transfer;
d3372da9 1650 freedcpeer(peer);
1fc81821 1651 trytransferbypeer(transfer->fnet, transfer->peerid);
d3372da9 1652 return;
1653 }
9a2d6cb8 1654 startdl(peer);
1655 qstr(peer->sk, "$Send|");
d3372da9 1656}
1657
1658static void cmd_error(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1659{
df873cd0 1660 if(peer->fetchingtthl)
1661 {
1662 peer->fetchingtthl = 0;
1663 peer->notthl = 1;
1664 requestfile(peer);
1665 return;
1666 }
d3372da9 1667 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1668 {
1669 transferseterror(peer->transfer, TRNSE_NOTFOUND);
1670 resettransfer(peer->transfer);
1671 return;
1672 }
1673 freedcpeer(peer);
1674}
1675
1676static void cmd_maxedout(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1677{
1678 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1679 {
1680 transferseterror(peer->transfer, TRNSE_NOSLOTS);
1681 resettransfer(peer->transfer);
1682 return;
1683 }
1684 freedcpeer(peer);
1685}
1686
1687static struct
1688{
1689 char *name;
1690 char **file;
1691 void (*func)(void);
1692} lists[] =
1693{
1694 {"MyList.DcLst", &hmlistname, updatehmlist},
1695 {"files.xml", &xmllistname, updatexmllist},
1696 {"files.xml.bz2", &xmlbz2listname, updatexmlbz2list},
1697 {NULL, NULL}
1698};
1699
1700static int openfilelist(char *name)
1701{
1702 int i, fd;
1703 int errnobak;
1704
1705 for(i = 0; lists[i].name != NULL; i++)
1706 {
1707 if(!strcmp(name, lists[i].name))
1708 break;
1709 }
1710 errno = 0;
1711 if(lists[i].name == NULL)
1712 return(-1);
1713 fd = -1;
1714 if((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0))
1715 lists[i].func();
1716 if((fd < 0) && ((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0)))
1717 {
1718 errnobak = errno;
1719 flog(LOG_ERR, "could not open filelist tempfile: %s", strerror(errno));
1720 errno = errnobak;
1721 return(-1);
1722 }
1723 return(fd);
1724}
1725
1726static struct sharecache *findbytth(char *tth32)
1727{
1728 char *buf;
1729 size_t buflen;
1730 struct sharecache *node;
1731
1732 if((buf = base32decode(tth32, &buflen)) == NULL)
1733 return(NULL);
1734 if(buflen != 24)
1735 {
1736 free(buf);
1737 return(NULL);
1738 }
1739 for(node = shareroot->child; node != NULL; node = nextscnode(node))
1740 {
1741 if(node->f.b.hastth && !memcmp(node->hashtth, buf, 24))
1742 break;
1743 }
1744 free(buf);
1745 return(node);
1746}
1747
1748static struct sharecache *resdcpath(char *path, char *charset, char sep)
1749{
1750 struct sharecache *node;
1751 char *p, *p2;
1752
1753 node = shareroot;
1754 p = path;
1755 while(p != NULL)
1756 {
1757 if((p2 = strchr(p, sep)) != NULL)
1758 *(p2++) = 0;
1759 if((node = findcache(node, icsmbstowcs(p, charset, L""))) == NULL)
1760 return(NULL);
1761 p = p2;
1762 }
1763 return(node);
1764}
1765
1766static void cmd_get(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1767{
1768 int offset;
1769 char *p, *buf;
1770 wchar_t *buf2;
1771 struct sharecache *node;
1772 struct socket *lesk;
1773 int fd;
1774 struct stat sb;
1775
1776 if(peer->transfer == NULL)
1777 {
1778 freedcpeer(peer);
1779 return;
1780 }
1781 if((p = strchr(args, '$')) == NULL)
1782 {
1783 freedcpeer(peer);
1784 return;
1785 }
1786 *(p++) = 0;
1787 if((offset = (atoi(p) - 1)) < 0)
1788 {
1789 freedcpeer(peer);
1790 return;
1791 }
1792 if(((fd = openfilelist(args)) < 0) && (errno != 0))
1793 {
1794 qstr(sk, "$Error Could not send file list|");
1795 freedcpeer(peer);
1796 return;
1797 } else if(fd >= 0) {
1798 if((buf2 = icsmbstowcs(args, DCCHARSET, NULL)) != NULL)
1799 transfersetpath(peer->transfer, buf2);
f00d7432 1800 peer->transfer->flags.b.minislot = 1;
d3372da9 1801 }
1802 if(fd < 0)
1803 {
1d85f24b 1804 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 1805 if((node = resdcpath(args, DCCHARSET, '\\')) == NULL)
1806 {
1807 qstrf(sk, "$Error File not in share|");
1808 freedcpeer(peer);
1809 return;
1810 }
1811 if((fd = opensharecache(node)) < 0)
1812 {
1813 qstrf(sk, "$Error %s|", strerror(errno));
1814 freedcpeer(peer);
1815 return;
1816 }
1817 buf = getfspath(node);
1818 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1819 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1820 else
1821 transfersetpath(peer->transfer, buf2);
1822 free(buf);
1823 }
1824 if(fstat(fd, &sb) < 0)
1825 {
1826 close(fd);
1827 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1828 qstrf(sk, "$Error|");
1829 freedcpeer(peer);
1830 return;
1831 }
f00d7432 1832 if(sb.st_size < 65536)
1833 peer->transfer->flags.b.minislot = 1;
1834 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
565006d1 1835 close(fd);
f00d7432 1836 qstr(sk, "$MaxedOut|");
1837 freedcpeer(peer);
1838 return;
1839 }
d3372da9 1840 if((offset != 0) && (lseek(fd, offset, SEEK_SET) < 0))
1841 {
1842 close(fd);
1843 qstrf(sk, "$Error Offset out of range|");
1844 freedcpeer(peer);
1845 return;
1846 }
1847 lesk = wrapsock(fd);
1848 transferprepul(peer->transfer, sb.st_size, offset, -1, lesk);
1849 putsock(lesk);
1850 qstrf(sk, "$FileLength %i|", peer->transfer->size);
d3372da9 1851}
1852
1853static void cmd_send(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1854{
1855 if(peer->transfer == NULL)
1856 {
1857 freedcpeer(peer);
1858 return;
1859 }
1860 if(peer->transfer->localend == NULL)
1861 {
1862 freedcpeer(peer);
1863 return;
1864 }
1865 peer->ptclose = 1;
9a2d6cb8 1866 startul(peer);
d3372da9 1867}
1868
1869static void cmd_supports(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1870{
1871 int i;
1872 char *p, *p2;
1873 char **arr;
1874 size_t arrsize, arrdata;
1875
1876 if(peer->supports != NULL)
1877 {
1878 for(i = 0; peer->supports[i] != NULL; i++)
1879 free(peer->supports[i]);
1880 free(peer->supports);
1881 }
1882 arr = NULL;
1883 arrsize = arrdata = 0;
1884 p = args;
1885 do
1886 {
1887 if((p2 = strchr(p, ' ')) != NULL)
1888 *(p2++) = 0;
1889 if(*p == 0)
1890 continue;
1891 addtobuf(arr, sstrdup(p));
1892 } while((p = p2) != NULL);
1893 addtobuf(arr, NULL);
1894 peer->supports = arr;
d3372da9 1895}
1896
1897static void cmd_getblock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1898{
1899 int fd;
1900 char *p, *p2;
1901 int start, numbytes;
1902 char *charset, *buf;
1903 wchar_t *buf2;
1904 struct sharecache *node;
1905 struct stat sb;
1906 struct socket *lesk;
1907
1908 if(peer->transfer == NULL)
1909 {
1910 freedcpeer(peer);
1911 return;
1912 }
1913 p = args;
1914 if((p2 = strchr(p, ' ')) == NULL)
1915 {
1916 freedcpeer(peer);
1917 return;
1918 }
1919 *(p2++) = 0;
1920 start = atoi(p);
1921 p = p2;
1922 if((p2 = strchr(p, ' ')) == NULL)
1923 {
1924 freedcpeer(peer);
1925 return;
1926 }
1927 *(p2++) = 0;
1928 numbytes = atoi(p);
1929 p = p2;
1930 if(!strcmp(cmd, "$UGetBlock") || !strcmp(cmd, "$UGetZBlock"))
1931 charset = "UTF-8";
1932 else
1d85f24b 1933 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 1934 charset = DCCHARSET;
1935 if(!strcmp(cmd, "$GetZBlock") || !strcmp(cmd, "$UGetZBlock"))
1936 initcompress(peer, CPRS_ZLIB);
1937 if(((fd = openfilelist(p)) < 0) && (errno != 0))
1938 {
1939 qstr(sk, "$Error Could not send file list|");
1940 return;
1941 } else if(fd >= 0) {
1942 if((buf2 = icsmbstowcs(args, charset, NULL)) != NULL)
1943 transfersetpath(peer->transfer, buf2);
f00d7432 1944 peer->transfer->flags.b.minislot = 1;
d3372da9 1945 }
1946 if(fd < 0)
1947 {
d3372da9 1948 if((node = resdcpath(p, charset, '\\')) == NULL)
1949 {
1950 qstr(sk, "$Error File not in cache|");
1951 return;
1952 }
1953 if((fd = opensharecache(node)) < 0)
1954 {
1955 qstrf(sk, "$Error %s|", strerror(errno));
1956 return;
1957 }
1958 buf = getfspath(node);
1959 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1960 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1961 else
1962 transfersetpath(peer->transfer, buf2);
1963 free(buf);
1964 }
1965 if(fstat(fd, &sb) < 0)
1966 {
1967 close(fd);
1968 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1969 qstr(sk, "$Error|");
1970 return;
1971 }
f00d7432 1972 if(sb.st_size < 65536)
1973 peer->transfer->flags.b.minislot = 1;
1974 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
565006d1 1975 close(fd);
f00d7432 1976 qstr(sk, "$MaxedOut|");
1977 return;
1978 }
d3372da9 1979 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
1980 {
1981 close(fd);
1982 qstr(sk, "$Error Offset out of range|");
1983 return;
1984 }
1985 if((numbytes < 0) || (start + numbytes > sb.st_size))
1986 numbytes = sb.st_size - start;
1987 lesk = wrapsock(fd);
1988 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
1989 putsock(lesk);
1990 qstrf(sk, "$Sending %i|", numbytes);
9a2d6cb8 1991 startul(peer);
d3372da9 1992}
1993
1994static void cmd_adcget(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1995{
1996 int i;
1997 char **argv, *buf;
1998 int start, numbytes;
1999 struct sharecache *node;
2000 struct stat sb;
2001 struct socket *lesk;
2002 wchar_t *wbuf;
2003 int fd;
2004
2005 if(peer->transfer == NULL)
2006 {
2007 freedcpeer(peer);
2008 return;
2009 }
2010 if((argv = parseadc(args)) == NULL)
2011 {
2012 freedcpeer(peer);
2013 return;
2014 }
2015 if(parrlen(argv) < 4)
2016 {
2017 freedcpeer(peer);
2018 goto out;
2019 }
2020 start = atoi(argv[2]);
2021 numbytes = atoi(argv[3]);
2022 node = NULL;
2023 fd = -1;
2024 if(((fd = openfilelist(argv[1])) < 0) && (errno != 0))
2025 {
2026 qstr(sk, "$Error Could not send file list|");
2027 goto out;
2028 } else if(fd >= 0) {
2029 if((wbuf = icsmbstowcs(argv[1], "UTF-8", NULL)) != NULL)
2030 transfersetpath(peer->transfer, wbuf);
f00d7432 2031 peer->transfer->flags.b.minislot = 1;
d3372da9 2032 }
2033 if(fd < 0)
2034 {
d3372da9 2035 if(!strncmp(argv[1], "TTH/", 4))
2036 {
2037 if((node = findbytth(argv[1] + 4)) == NULL)
2038 {
2039 qstr(sk, "$Error File not in cache|");
2040 goto out;
2041 }
2042 } else {
9a2d6cb8 2043 if((node = resdcpath((argv[1][0] == '/')?(argv[1] + 1):(argv[1]), "UTF-8", '/')) == NULL)
d3372da9 2044 {
2045 qstr(sk, "$Error File not in cache|");
2046 goto out;
2047 }
2048 }
2049 if((fd = opensharecache(node)) < 0)
2050 {
2051 qstrf(sk, "$Error %s|", strerror(errno));
2052 goto out;
2053 }
2054 buf = getfspath(node);
2055 if((wbuf = icsmbstowcs(buf, NULL, NULL)) == NULL)
2056 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
2057 else
2058 transfersetpath(peer->transfer, wbuf);
2059 free(buf);
2060 }
2061 if(!strcmp(argv[0], "file"))
2062 {
2063 for(i = 4; argv[i] != NULL; i++)
2064 {
2065 if(!strcmp(argv[i], "ZL1"))
2066 initcompress(peer, CPRS_ZLIB);
2067 }
2068 if(fstat(fd, &sb) < 0)
2069 {
2070 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
2071 qstr(sk, "$Error|");
2072 goto out;
2073 }
f00d7432 2074 if(sb.st_size < 65536)
2075 peer->transfer->flags.b.minislot = 1;
2076 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
2077 qstr(sk, "$MaxedOut|");
2078 goto out;
2079 }
d3372da9 2080 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
2081 {
2082 qstr(sk, "$Error Offset out of range|");
2083 goto out;
2084 }
2085 if((numbytes < 0) || (start + numbytes > sb.st_size))
2086 numbytes = sb.st_size - start;
2087 lesk = wrapsock(fd);
2088 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2089 putsock(lesk);
2090 fd = -1;
2091 qstr(sk, "$ADCSND");
2092 sendadc(sk, "file");
2093 sendadc(sk, argv[1]);
2094 sendadcf(sk, "%i", start);
2095 sendadcf(sk, "%i", numbytes);
2096 if(peer->compress == CPRS_ZLIB)
2097 sendadc(sk, "ZL1");
2098 qstr(sk, "|");
9a2d6cb8 2099 startul(peer);
d3372da9 2100 } else if(!strcmp(argv[0], "tthl")) {
2101 /*
2102 * XXX: Implement full TTHL support.
2103 *
2104 * In the meantime, this is better than nothing, since it at
2105 * least allows fetching of the TTH root if it isn't already
2106 * known.
2107 */
2108 if(node == NULL)
2109 {
2110 qstr(sk, "$Error no TTHL data for virtual files|");
2111 goto out;
2112 }
2113 qstr(sk, "$ADCSND");
2114 sendadc(sk, "tthl");
2115 sendadc(sk, argv[1]);
2116 sendadc(sk, "0");
2117 sendadc(sk, "24");
2118 qstr(sk, "|");
2119 sockqueue(sk, node->hashtth, 24);
2120 } else {
2121 qstr(sk, "$Error Namespace not implemented|");
2122 goto out;
2123 }
d3372da9 2124
2125 out:
2126 if(fd >= 0)
2127 close(fd);
2128 freeparr(argv);
2129}
2130
9a2d6cb8 2131static void handletthl(struct dcpeer *peer)
2132{
2133 char buf[24];
2134
2135 while(peer->inbufdata >= 24)
2136 {
2137 pushtigertree(&peer->tth, peer->inbuf);
2138 memmove(peer->inbuf, peer->inbuf + 24, peer->inbufdata -= 24);
e52006fe 2139 peer->curread += 24;
9a2d6cb8 2140 }
e52006fe 2141 if(peer->curread >= peer->totalsize)
9a2d6cb8 2142 {
1e9d82b1 2143 if(peer->timeout == NULL)
2144 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
9a2d6cb8 2145 peer->state = PEER_CMD;
2146 synctigertree(&peer->tth);
2147 restigertree(&peer->tth, buf);
2148 transfersethash(peer->transfer, newhash(L"TTH", 24, buf));
2149 requestfile(peer);
2150 }
2151}
2152
2153static void cmd_adcsnd(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2154{
2155 char **argv;
2156 int start, numbytes;
2157
2158 if(peer->transfer == NULL)
2159 {
2160 freedcpeer(peer);
2161 return;
2162 }
2163 if((argv = parseadc(args)) == NULL)
2164 {
2165 freedcpeer(peer);
2166 return;
2167 }
2168 if(parrlen(argv) < 4)
2169 {
2170 freedcpeer(peer);
2171 goto out;
2172 }
2173 start = atoi(argv[2]);
2174 numbytes = atoi(argv[3]);
2175 if(!strcmp(argv[0], "tthl"))
2176 {
2177 if((start != 0) || (numbytes % 24 != 0))
2178 {
2179 /* Weird. Bail out. */
2180 freedcpeer(peer);
2181 goto out;
2182 }
1e9d82b1 2183 if(peer->timeout != NULL)
2184 canceltimer(peer->timeout);
9a2d6cb8 2185 peer->state = PEER_TTHL;
2186 peer->totalsize = numbytes;
2187 peer->curread = 0;
df873cd0 2188 peer->fetchingtthl = 0;
9a2d6cb8 2189 inittigertree(&peer->tth);
2190 handletthl(peer);
2191 } else if(!strcmp(argv[0], "file")) {
2192 if(start != peer->transfer->curpos)
2193 {
2194 freedcpeer(peer);
2195 goto out;
2196 }
2197 if(start + numbytes != peer->transfer->size)
2198 {
2199 transfersetsize(peer->transfer, start + numbytes);
2200 freedcpeer(peer);
2201 goto out;
2202 }
2203 startdl(peer);
e52006fe 2204 if(peer->inbufdata > 0)
2205 {
2206 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2207 peer->inbufdata = 0;
2208 transread(sk, peer);
2209 }
9a2d6cb8 2210 } else {
2211 /* We certainly didn't request this...*/
2212 freedcpeer(peer);
2213 goto out;
2214 }
2215
2216 out:
2217 freeparr(argv);
2218}
2219
2220static void cmd_sending(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2221{
2222 int numbytes;
2223
2224 if(peer->transfer == NULL)
2225 {
2226 freedcpeer(peer);
2227 return;
2228 }
2229 numbytes = atoi(args);
2230 if(peer->transfer->size - peer->transfer->curpos != numbytes)
2231 {
2232 transfersetsize(peer->transfer, peer->transfer->curpos + numbytes);
2233 freedcpeer(peer);
2234 return;
2235 }
2236 startdl(peer);
0d8c93cb 2237 if(peer->inbufdata > 0)
2238 {
2239 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2240 peer->inbufdata = 0;
2241 transread(sk, peer);
2242 }
9a2d6cb8 2243}
2244
d3372da9 2245/*
2246Hub skeleton:
2247static void cmd_(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
2248{
2249 struct dchub *hub;
2250
2251 hub = fn->data;
2252 hubhandleaction(sk, fn, cmd, args);
2253}
2254
2255Peer skeleton:
2256static void cmd_(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2257{
d3372da9 2258}
2259
2260*/
2261
2262static int hubreqconn(struct fnetpeer *peer)
2263{
2264 struct dchub *hub;
2265 char *mbsnick;
2266
2267 if((peer->fn->state != FNN_EST) || (peer->fn->fnet != &dcnet))
2268 {
2269 errno = EINVAL;
2270 return(1);
2271 }
2272 if((hub = peer->fn->data) == NULL)
2273 {
2274 errno = EFAULT;
2275 return(1);
2276 }
1d85f24b 2277 if((mbsnick = icwcstombs(peer->id, hub->charset)) == NULL)
d3372da9 2278 return(1); /* Shouldn't happen, of course, but who knows... */
2279 if(tcpsock != NULL)
2280 {
2281 sendctm(peer->fn->sk, mbsnick);
2282 expectpeer(mbsnick, peer->fn);
2283 } else {
2284 qstrf(peer->fn->sk, "$RevConnectToMe %s %s|", hub->nativenick, mbsnick);
2285 }
2286 free(mbsnick);
2287 return(0);
2288}
2289
2290static int hubsendchat(struct fnetnode *fn, int public, wchar_t *to, wchar_t *string)
2291{
2292 struct dchub *hub;
2293 char *mbsstring, *mbsto;
2294
2295 hub = fn->data;
1d85f24b 2296 if((mbsto = icwcstombs(to, hub->charset)) == NULL)
d3372da9 2297 {
2298 errno = EILSEQ;
2299 return(1);
2300 }
1d85f24b 2301 if((mbsstring = icwcstombs(string, hub->charset)) == NULL)
d3372da9 2302 {
2303 errno = EILSEQ;
2304 return(1);
2305 }
2306 if((strchr(mbsto, '|') != NULL) || (strchr(mbsto, ' ') != NULL))
2307 {
2308 free(mbsto);
2309 free(mbsstring);
2310 errno = ESRCH;
2311 return(1);
2312 }
2313 if(strchr(mbsstring, '|') != NULL)
2314 {
2315 free(mbsto);
2316 free(mbsstring);
2317 errno = EILSEQ;
2318 return(1);
2319 }
2320 if(public)
2321 {
2322 if(*to == L'\0')
2323 {
2324 qstrf(fn->sk, "<%s> %s|", hub->nativenick, mbsstring);
2325 } else {
2326 qstrf(fn->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2327 }
2328 } else {
2329 qstrf(fn->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2330 }
2331 free(mbsto);
2332 free(mbsstring);
2333 return(0);
2334}
2335
2336static void findsizelimit(struct sexpr *sexpr, int *min, int *max)
2337{
2338 int minl, maxl, minr, maxr, retmin, retmax;
2339
2340 switch(sexpr->op)
2341 {
2342 case SOP_AND:
2343 findsizelimit(sexpr->l, &minl, &maxl);
2344 findsizelimit(sexpr->r, &minr, &maxr);
2345 retmin = (minl > minr)?minl:minr;
2346 if((maxl != -1) && (maxr != -1))
2347 retmax = (maxl < maxr)?maxl:maxr;
2348 else if(maxl != -1)
2349 retmax = maxl;
2350 else if(maxr != -1)
2351 retmax = maxr;
2352 else
2353 retmax = -1;
2354 break;
2355 case SOP_OR:
2356 findsizelimit(sexpr->l, &minl, &maxl);
2357 findsizelimit(sexpr->r, &minr, &maxr);
2358 retmin = (minl < minr)?minl:minr;
2359 if((maxl == -1) || (maxr == -1))
2360 retmax = -1;
2361 else
2362 retmax = (maxl > maxr)?maxl:maxr;
2363 break;
2364 case SOP_NOT:
2365 findsizelimit(sexpr->l, &minl, &maxl);
2366 if((minl == 0) && (maxl == -1)) /* Interval is unspecified */
2367 {
2368 retmin = 0;
2369 retmax = -1;
2370 } else if((minl == 0) && (maxl != -1)) {
2371 retmin = maxl + 1;
2372 retmax = -1;
2373 } else if((minl != 0) && (maxl == -1)) {
2374 retmin = 0;
2375 retmax = minl - 1;
2376 } else { /* This would yield two seperate intervals, which DC cannot handle */
2377 retmin = 0;
2378 retmax = -1;
2379 }
2380 case SOP_SIZELT:
2381 retmin = 0;
2382 retmax = sexpr->d.n - 1;
2383 break;
2384 case SOP_SIZEEQ:
2385 retmin = sexpr->d.n;
2386 retmax = sexpr->d.n;
2387 break;
2388 case SOP_SIZEGT:
2389 retmin = sexpr->d.n + 1;
2390 retmax = -1;
2391 break;
2392 default:
2393 retmin = 0;
2394 retmax = -1;
2395 break;
2396 }
2397 if(min != NULL)
2398 *min = retmin;
2399 if(max != NULL)
2400 *max = retmax;
2401}
2402
9d8cf743 2403static struct hash *findsehash(struct sexpr *sexpr)
2404{
2405 struct hash *h1, *h2;
2406
2407 switch(sexpr->op)
2408 {
2409 case SOP_AND:
2410 if((h1 = findsehash(sexpr->l)) != NULL)
2411 return(h1);
2412 if((h1 = findsehash(sexpr->r)) != NULL)
2413 return(h1);
2414 break;
2415 case SOP_OR:
2416 h1 = findsehash(sexpr->l);
2417 h2 = findsehash(sexpr->r);
2418 if(hashcmp(h1, h2))
2419 return(h1);
2420 break;
2421 case SOP_HASHIS:
2422 if(!wcscmp(sexpr->d.hash->algo, L"TTH"))
2423 return(sexpr->d.hash);
2424 default:
2425 break;
2426 }
2427 return(NULL);
2428}
2429
d3372da9 2430static int hubsearch(struct fnetnode *fn, struct search *srch, struct srchfnnlist *ln)
2431{
2432 struct dchub *hub;
2433 struct wcslist *list, *cur;
2434 char *sstr, *buf, *p;
2435 size_t sstrsize, sstrdata;
2436 struct sockaddr *name;
2437 socklen_t namelen;
2438 int minsize, maxsize;
9d8cf743 2439 struct hash *hash;
d3372da9 2440
2441 hub = fn->data;
2442 if((fn->state != FNN_EST) || (fn->sk == NULL) || (fn->sk->state != SOCK_EST))
2443 return(1);
2444 list = findsexprstrs(srch->sexpr);
2445 findsizelimit(srch->sexpr, &minsize, &maxsize);
9d8cf743 2446 hash = findsehash(srch->sexpr);
d3372da9 2447 if((minsize != 0) && (maxsize != -1))
2448 {
2449 /* Choose either minsize or maxsize by trying to determine
2450 * which choice will be most restrictive. The result can be
2451 * approximative at best anyway, so don't try too hard... */
2452 if((50000000 - maxsize) > (minsize - 50000000))
2453 minsize = 0;
2454 else
2455 maxsize = -1;
2456 }
d3372da9 2457 sstr = NULL;
2458 sstrsize = sstrdata = 0;
9d8cf743 2459 if((hash != NULL) && (hash->len == 24))
d3372da9 2460 {
9d8cf743 2461 /* Prioritize hash searches above all else */
2462 bufcat(sstr, "F?T?0?9?TTH:", 12);
2463 buf = base32encode(hash->buf, hash->len);
2464
2465 bufcat(sstr, buf, 39);
2466 free(buf);
2467 } else {
2468 if(minsize != 0)
d3372da9 2469 {
9d8cf743 2470 sizebuf2(sstr, sstrdata + 32, 1);
fe42d689 2471 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?F?%i?1?", minsize);
9d8cf743 2472 } else if(maxsize != -1) {
2473 sizebuf2(sstr, sstrdata + 32, 1);
fe42d689 2474 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?T?%i?1?", maxsize);
9d8cf743 2475 } else {
2476 bufcat(sstr, "F?F?0?1?", 8);
2477 }
2478 if(list != NULL)
2479 {
2480 for(cur = list; cur != NULL; cur = cur->next)
d3372da9 2481 {
1d85f24b 2482 /* Use DCCHARSET in $Get paths until further researched... */
9d8cf743 2483 if((buf = icwcstombs(cur->str, DCCHARSET)) == NULL)
2484 {
2485 /* Can't find anything anyway if the search expression
2486 * requires characters outside DC's charset. There's
2487 * nothing technically wrong with the search itself,
2488 * however, so return success. This should be
2489 * considered as an optimization. */
2490 freesl(&list);
2491 if(sstr != NULL)
2492 free(sstr);
2493 return(0);
2494 }
2495 if(cur != list)
2496 addtobuf(sstr, '$');
2497 /*
2498 * It probably doesn't hurt if buf contains any extra
2499 * dollar signs - it will just result in extra search
2500 * terms, and the extraneous results will be filtered by
2501 * the search layer anyway. It hurts if it contains any
2502 * pipes, though, so let's sell them for money.
2503 */
2504 for(p = buf; *p; p++)
2505 {
2506 if(*p == '|')
2507 *p = '$';
2508 }
2509 bufcat(sstr, buf, strlen(buf));
2510 free(buf);
d3372da9 2511 }
9d8cf743 2512 } else {
2513 /* Will match all files... :-/ */
2514 addtobuf(sstr, '.');
d3372da9 2515 }
d3372da9 2516 }
2517 addtobuf(sstr, 0);
2518 if(tcpsock != NULL)
2519 {
2520 if(sockgetremotename(udpsock, &name, &namelen) < 0)
2521 {
2522 flog(LOG_WARNING, "cannot get address of UDP socket");
2523 } else {
9d8cf743 2524 qstrf(fn->sk, "$Search %s %s|", formataddress(name, namelen), sstr);
d3372da9 2525 free(name);
2526 }
2527 } else {
9d8cf743 2528 qstrf(fn->sk, "$Search Hub:%s %s|", hub->nativenick, sstr);
d3372da9 2529 }
2530 free(sstr);
2531 freesl(&list);
2532 fn->lastsrch = time(NULL);
2533 return(0);
2534}
2535
2536#undef skipcmd
2537#undef qstr
2538#undef qstrf
2539
2540#define cc(c) ((void (*)(struct socket *, void *, char *, char *))(c))
2541struct command hubcmds[] =
2542{
2543 {"$Lock", cc(cmd_lock)},
2544 {"$HubName", cc(cmd_hubname)},
2545 {"$Hello", cc(cmd_hello)},
2546 {"$Quit", cc(cmd_quit)},
2547 {"$NickList", cc(cmd_nicklist)},
2548 {"$OpList", cc(cmd_oplist)},
2549 {"$MyINFO", cc(cmd_myinfo)},
2550 {"$ForceMove", cc(cmd_forcemove)},
2551 {"$Search", cc(cmd_search)},
2552 {"$MultiSearch", cc(cmd_search)},
2553 {"$ConnectToMe", cc(cmd_connecttome)},
2554 {"$RevConnectToMe", cc(cmd_revconnecttome)},
2555 {"$GetNetInfo", cc(cmd_getnetinfo)},
2556 {"$To:", cc(cmd_to)},
2557 {"$SR", cc(cmd_sr)},
2558 {"$UserCommand", cc(cmd_usercommand)},
48509089 2559 {"$GetPass", cc(cmd_getpass)},
c9b3ad74 2560 {"$LogedIn", cc(cmd_logedin)}, /* sic */
d3372da9 2561 {NULL, NULL}
2562};
2563
2564struct command peercmds[] =
2565{
2566 {"$MyNick", cc(cmd_mynick)},
2567 {"$Lock", cc(cmd_peerlock)},
2568 {"$Direction", cc(cmd_direction)},
2569 {"$Key", cc(cmd_key)},
2570 {"$FileLength", cc(cmd_filelength)},
2571 {"$Error", cc(cmd_error)},
2572 {"$MaxedOut", cc(cmd_maxedout)},
2573 {"$Get", cc(cmd_get)},
2574 {"$Send", cc(cmd_send)},
2575 {"$Supports", cc(cmd_supports)},
2576 {"$GetBlock", cc(cmd_getblock)},
2577 {"$UGetBlock", cc(cmd_getblock)},
2578 {"$GetZBlock", cc(cmd_getblock)},
2579 {"$UGetZBlock", cc(cmd_getblock)},
2580 {"$ADCGET", cc(cmd_adcget)},
9a2d6cb8 2581 {"$ADCSND", cc(cmd_adcsnd), 1},
2582 {"$Sending", cc(cmd_sending), 1},
d3372da9 2583 {NULL, NULL}
2584};
2585#undef cc
2586
2587static void dctransdetach(struct transfer *transfer, struct dcpeer *peer)
2588{
2589 CBUNREG(transfer, trans_filterout, peer);
2590 if(peer->freeing)
2591 return;
2592 peer->transfer = NULL;
2593 freedcpeer(peer);
2594}
2595
2596static void dctransgotdata(struct transfer *transfer, struct dcpeer *peer)
2597{
2598 int ret;
2599 void *buf;
2600 char outbuf[1024];
2601 z_stream *cstr;
2602 size_t bufsize;
2603
2604 if((peer->state == PEER_TRNS) || (peer->state == PEER_SYNC))
2605 {
2606 if(sockqueuesize(peer->sk) < 65536)
2607 {
2608 if((buf = transfergetdata(transfer, &bufsize)) != NULL)
2609 {
2610 if(peer->compress == CPRS_NONE)
2611 {
2612 sockqueue(peer->sk, buf, bufsize);
2613 } else if(peer->compress == CPRS_ZLIB) {
2614 cstr = peer->cprsdata;
2615 cstr->next_in = buf;
2616 cstr->avail_in = bufsize;
2617 while(cstr->avail_in > 0)
2618 {
2619 cstr->next_out = outbuf;
2620 cstr->avail_out = sizeof(outbuf);
2621 if((ret = deflate(cstr, 0)) != Z_OK)
2622 {
2623 flog(LOG_WARNING, "bug? deflate() did not return Z_OK (but rather %i)", ret);
2624 freedcpeer(peer);
2625 return;
2626 }
2627 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2628 }
2629 }
2630 free(buf);
2631 }
2632 if(peer->state == PEER_SYNC)
2633 {
2634 if(peer->compress == CPRS_ZLIB)
2635 {
2636 cstr = peer->cprsdata;
2637 cstr->next_in = NULL;
2638 cstr->avail_in = 0;
2639 do
2640 {
2641 cstr->next_out = outbuf;
2642 cstr->avail_out = sizeof(outbuf);
2643 ret = deflate(cstr, Z_FINISH);
2644 if((ret != Z_OK) && (ret != Z_STREAM_END))
2645 {
2646 flog(LOG_WARNING, "bug? deflate(Z_FINISH) did not return Z_OK (but rather %i)", ret);
2647 freedcpeer(peer);
2648 return;
2649 }
2650 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2651 } while(ret != Z_STREAM_END);
2652 }
2653 if(peer->ptclose)
2654 {
2655 freedcpeer(peer);
2656 } else {
1e9d82b1 2657 if(peer->timeout == NULL)
2658 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 2659 peer->state = PEER_CMD;
2660 endcompress(peer);
2661 transfersetstate(transfer, TRNS_HS);
2662 socksettos(peer->sk, confgetint("fnet", "fnptos"));
bfc261fe 2663 transfer->flags.b.minislot = 0;
d3372da9 2664 peer->sk->writecb = NULL;
2665 }
2666 }
2667 }
2668 }
2669}
2670
2671static void dctransendofdata(struct transfer *transfer, struct dcpeer *peer)
2672{
2673 peer->state = PEER_SYNC;
2674 dctransgotdata(transfer, peer);
2675}
2676
2677static void dcwantdata(struct transfer *transfer, struct dcpeer *peer)
2678{
2679 if(transferdatasize(transfer) < 65536)
2680 peer->sk->ignread = 0;
2681}
2682
2683static void transread(struct socket *sk, struct dcpeer *peer)
2684{
2685 void *buf;
2686 size_t bufsize;
2687 struct transfer *transfer;
2688
2689 if((buf = sockgetinbuf(sk, &bufsize)) == NULL)
2690 return;
2691 if(peer->transfer == NULL)
2692 {
2693 free(buf);
2694 freedcpeer(peer);
2695 return;
2696 }
2697 transferputdata(peer->transfer, buf, bufsize);
2698 free(buf);
2699 if(peer->transfer->curpos >= peer->transfer->size)
2700 {
2701 transfer = peer->transfer;
2702 transferdetach(transfer);
2703 transferendofdata(transfer);
2704 return;
2705 }
2706 if(transferdatasize(peer->transfer) > 65535)
2707 sk->ignread = 1;
2708}
2709
2710static void transerr(struct socket *sk, int err, struct dcpeer *peer)
2711{
2712 struct transfer *transfer;
2713
2714 if((transfer = peer->transfer) == NULL)
2715 {
2716 freedcpeer(peer);
2717 return;
2718 }
2719 transferdetach(transfer);
2720 transferendofdata(transfer);
2721}
2722
2723static void transwrite(struct socket *sk, struct dcpeer *peer)
2724{
2725 if((peer->state != PEER_TRNS) && (peer->state != PEER_SYNC))
2726 return;
2727 if(peer->transfer == NULL)
2728 {
2729 freedcpeer(peer);
2730 return;
2731 }
2732 dctransgotdata(peer->transfer, peer);
2733}
2734
2735static void udpread(struct socket *sk, void *data)
2736{
d86b7a9f 2737 char *buf, *p, *p2, *hashbuf;
2738 size_t buflen, hashlen;
d3372da9 2739 char *nick, *filename, *hubname;
99a28d47 2740 struct sockaddr_in hubaddr;
d3372da9 2741 int size, slots;
2742 struct fnetnode *fn, *myfn;
2743 struct dchub *hub;
2744 struct srchres *sr;
2745 wchar_t *wnick, *wfile;
d86b7a9f 2746 struct hash *hash;
d3372da9 2747
2748 if((buf = sockgetinbuf(sk, &buflen)) == NULL)
2749 return;
2750 buf = srealloc(buf, buflen + 1);
2751 buf[buflen] = 0;
2752 if(!strncmp(buf, "$SR ", 4))
2753 {
2754 p = buf + 4;
2755 nick = p;
2756 if((p2 = strchr(p, ' ')) == NULL)
2757 {
2758 free(buf);
2759 return;
2760 }
2761 *p2 = 0;
2762 p = p2 + 1;
2763 filename = p;
2764 if((p2 = strchr(p, 5)) == NULL)
2765 {
2766 free(buf);
2767 return;
2768 }
2769 *p2 = 0;
2770 p = p2 + 1;
2771 if((p2 = strchr(p, ' ')) == NULL)
2772 {
2773 free(buf);
2774 return;
2775 }
2776 *p2 = 0;
2777 size = atoi(p);
2778 p = p2 + 1;
2779 if((p2 = strchr(p, '/')) == NULL)
2780 {
2781 free(buf);
2782 return;
2783 }
2784 *p2 = 0;
2785 slots = atoi(p);
2786 p = p2 + 1;
2787 if((p2 = strchr(p, 5)) == NULL)
2788 {
2789 free(buf);
2790 return;
2791 }
2792 p = p2 + 1;
2793 hubname = p;
2794 if((p2 = strstr(p, " (")) == NULL)
2795 {
2796 free(buf);
2797 return;
2798 }
2799 *p2 = 0;
99a28d47 2800 p = p2 + 2;
2801 if((p2 = strchr(p, ':')) == NULL)
2802 {
2803 free(buf);
2804 return;
2805 }
870bf4ad 2806 *(p2++) = 0;
99a28d47 2807 hubaddr.sin_family = AF_INET;
2808 if(!inet_aton(p, &hubaddr.sin_addr))
2809 {
2810 free(buf);
2811 return;
2812 }
2813 p = p2;
2814 if((p2 = strchr(p, ')')) == NULL)
2815 {
2816 free(buf);
2817 return;
2818 }
2819 *p2 = 0;
2820 hubaddr.sin_port = htons(atoi(p));
1d85f24b 2821 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 2822 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
2823 {
d3372da9 2824 free(buf);
2825 return;
2826 }
2827 myfn = NULL;
d86b7a9f 2828 hash = NULL;
2829 if(!strncmp(hubname, "TTH:", 4))
d3372da9 2830 {
d86b7a9f 2831 if((hashbuf = base32decode(hubname + 4, &hashlen)) != NULL)
2832 {
2833 if(hashlen == 24)
2834 hash = newhash(L"TTH", 24, hashbuf);
2835 free(hashbuf);
2836 }
2837 } else {
2838 for(fn = fnetnodes; fn != NULL; fn = fn->next)
d3372da9 2839 {
d86b7a9f 2840 if((fn->fnet == &dcnet) && ((hub = fn->data) != NULL))
d3372da9 2841 {
d86b7a9f 2842 if((hub->nativename != NULL) && !strcmp(hub->nativename, hubname))
d3372da9 2843 {
d86b7a9f 2844 if(myfn == NULL)
2845 {
2846 myfn = fn;
2847 } else {
2848 myfn = NULL;
2849 break;
2850 }
d3372da9 2851 }
2852 }
2853 }
2854 }
99a28d47 2855 if(myfn == NULL)
2856 {
2857 for(fn = fnetnodes; fn != NULL; fn = fn->next)
2858 {
39cc1b93 2859 if((fn->fnet == &dcnet) && (fn->sk != NULL) && addreq(fn->sk->remote, (struct sockaddr *)&hubaddr))
99a28d47 2860 {
2861 myfn = fn;
2862 break;
2863 }
2864 }
2865 }
1d85f24b 2866 hub = NULL;
2867 if(myfn != NULL)
2868 hub = myfn->data;
2869 if((wnick = icmbstowcs(nick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
2870 {
2871 free(buf);
2872 return;
2873 }
d3372da9 2874 sr = newsrchres(&dcnet, wfile, wnick);
2875 if(sr->peernick != NULL)
2876 free(sr->peernick);
2877 sr->peernick = swcsdup(wnick);
2878 sr->size = size;
2879 sr->slots = slots;
2880 free(wfile);
2881 free(wnick);
2882 if(myfn != NULL)
2883 getfnetnode(sr->fn = myfn);
d86b7a9f 2884 if(hash != NULL)
2885 sr->hash = hash;
d3372da9 2886 submitsrchres(sr);
2887 freesrchres(sr);
2888 }
2889 free(buf);
2890}
2891
2892static void hubread(struct socket *sk, struct fnetnode *fn)
2893{
2894 struct dchub *hub;
2895 char *newbuf;
2896 size_t datalen;
2897 char *p;
2898
2899 hub = (struct dchub *)fn->data;
2900 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
2901 return;
2902 if(hub->inbufdata > 500000) /* Discard possible malicious data */
2903 hub->inbufdata = 0;
2904 sizebuf2(hub->inbuf, hub->inbufdata + datalen, 1);
2905 memcpy(hub->inbuf + hub->inbufdata, newbuf, datalen);
2906 free(newbuf);
2907 p = hub->inbuf + hub->inbufdata;
2908 hub->inbufdata += datalen;
2909 while((datalen > 0) && ((p = memchr(p, '|', datalen)) != NULL))
2910 {
2911 *(p++) = 0;
2912 newqcmd(&hub->queue, hub->inbuf);
2913 memmove(hub->inbuf, p, hub->inbufdata -= p - hub->inbuf);
2914 datalen = hub->inbufdata;
2915 p = hub->inbuf;
2916 }
2917}
2918
2919static void huberr(struct socket *sk, int err, struct fnetnode *fn)
2920{
2921 killfnetnode(fn);
2922}
2923
2924static int hubsetnick(struct fnetnode *fn, wchar_t *newnick)
2925{
2926 struct dchub *hub;
2927 char *buf;
2928
2929 hub = fn->data;
1d85f24b 2930 if((buf = icwcstombs(newnick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
d3372da9 2931 return(1);
2932 if((strchr(buf, ' ') != NULL) || (strchr(buf, '|') != NULL) || (strchr(buf, '$') != NULL))
2933 {
2934 free(buf);
2935 return(1);
2936 }
2937 if(hub == NULL) /* Not yet connected */
2938 {
2939 free(buf);
2940 return(0);
2941 }
2942 if(hub->nativenick != NULL)
2943 free(hub->nativenick);
2944 hub->nativenick = buf;
2945 return(0);
2946}
2947
2948static struct dchub *newdchub(struct fnetnode *fn)
2949{
2950 struct dchub *new;
1c4b02cd 2951 wchar_t *emu;
1d85f24b 2952 wchar_t *wcharset;
2953 char *charset;
d3372da9 2954
2955 new = smalloc(sizeof(*new));
2956 memset(new, 0, sizeof(*new));
2957 fn->data = new;
1c4b02cd 2958 if(confgetint("dc", "dcppemu"))
2959 new->dcppemu = 1;
2960 if((emu = wpfind(fn->args, L"dcppemu")) != NULL)
2961 {
2962 if(*emu == L'y')
2963 new->dcppemu = 1;
2964 if(*emu == L'n')
2965 new->dcppemu = 0;
2966 }
1d85f24b 2967 charset = NULL;
2968 if((wcharset = wpfind(fn->args, L"charset")) != NULL)
2969 {
2970 if((charset = icwcstombs(wcharset, "US-ASCII")) != NULL)
2971 {
2972 if(!havecharset(charset))
2973 {
2974 free(charset);
2975 charset = NULL;
2976 }
2977 }
2978 }
2979 if(charset != NULL)
2980 new->charset = charset;
2981 else
2982 new->charset = sstrdup(DCCHARSET);
d3372da9 2983 if(hubsetnick(fn, fn->mynick))
2984 fnetsetnick(fn, L"DoldaConnectUser-IN");
2985 /* IN as in Invalid Nick */
2986 return(new);
2987}
2988
2989static struct dcpeer *newdcpeer(struct socket *sk)
2990{
2991 struct dcpeer *new;
2992
2993 new = smalloc(sizeof(*new));
2994 memset(new, 0, sizeof(*new));
2995 new->transfer = NULL;
2996 getsock(sk);
2997 new->sk = sk;
1c4b02cd 2998 if(confgetint("dc", "dcppemu"))
2999 new->dcppemu = 1;
d3372da9 3000 new->next = peers;
3001 new->prev = NULL;
3002 if(peers != NULL)
3003 peers->prev = new;
3004 peers = new;
3005 numdcpeers++;
3006 return(new);
3007}
3008
3009static void freedcpeer(struct dcpeer *peer)
3010{
3011 int i;
3012 struct qcommand *qcmd;
3013
3014 peer->freeing = 1;
3015 if(peers == peer)
3016 peers = peer->next;
3017 if(peer->next != NULL)
3018 peer->next->prev = peer->prev;
3019 if(peer->prev != NULL)
3020 peer->prev->next = peer->next;
3021 if(peer->transfer != NULL)
3022 {
3023 if(peer->transfer->dir == TRNSD_UP)
3024 peer->transfer->close = 1;
3025 if(peer->transfer->dir == TRNSD_DOWN)
3026 resettransfer(peer->transfer);
3027 transferdetach(peer->transfer);
3028 }
1e9d82b1 3029 if(peer->timeout != NULL)
3030 canceltimer(peer->timeout);
d3372da9 3031 if(peer->sk->data == peer)
3032 peer->sk->data = NULL;
3033 peer->sk->readcb = NULL;
3034 peer->sk->writecb = NULL;
3035 peer->sk->errcb = NULL;
3036 putsock(peer->sk);
3037 endcompress(peer);
3038 if(peer->supports != NULL)
3039 {
3040 for(i = 0; peer->supports[i] != NULL; i++)
3041 free(peer->supports[i]);
3042 free(peer->supports);
3043 }
d3372da9 3044 if(peer->inbuf != NULL)
3045 free(peer->inbuf);
3046 if(peer->key != NULL)
3047 free(peer->key);
3048 if(peer->wcsname != NULL)
3049 free(peer->wcsname);
3050 if(peer->nativename != NULL)
3051 free(peer->nativename);
1d85f24b 3052 if(peer->charset != NULL)
3053 free(peer->charset);
d3372da9 3054 if(peer->fn != NULL)
3055 putfnetnode(peer->fn);
3056 while((qcmd = ulqcmd(&peer->queue)) != NULL)
3057 freeqcmd(qcmd);
3058 free(peer);
3059 numdcpeers--;
3060}
3061
3062static void hubconnect(struct fnetnode *fn)
3063{
3064 fn->sk->readcb = (void (*)(struct socket *, void *))hubread;
3065 fn->sk->errcb = (void (*)(struct socket *, int, void *))huberr;
3066 getfnetnode(fn);
3067 fn->data = newdchub(fn);
3068 fn->sk->data = fn;
3069 return;
3070}
3071
3072static void hubdestroy(struct fnetnode *fn)
3073{
3074 struct dchub *hub;
3075 struct qcommand *qcmd;
3076
3077 hub = (struct dchub *)fn->data;
9d131372 3078 if((fn->sk != NULL) && (fn->sk->data == fn))
d3372da9 3079 {
9d131372 3080 fn->sk->data = NULL;
3081 putfnetnode(fn);
d3372da9 3082 }
3083 if(hub == NULL)
3084 return;
3085 while((qcmd = ulqcmd(&hub->queue)) != NULL)
3086 freeqcmd(qcmd);
3087 if(hub->nativename != NULL)
3088 free(hub->nativename);
3089 if(hub->nativenick != NULL)
3090 free(hub->nativenick);
1d85f24b 3091 if(hub->charset != NULL)
3092 free(hub->charset);
d3372da9 3093 if(hub->inbuf != NULL)
3094 free(hub->inbuf);
3095 free(hub);
3096}
3097
3098static wchar_t *dcbasename(wchar_t *filename)
3099{
3100 wchar_t *ret;
3101
3102 if((ret = wcsrchr(filename, L'\\')) != NULL)
3103 return(ret + 1);
3104 return(filename);
3105}
3106
3107static struct transferiface dctransfer =
3108{
3109 .detach = (void (*)(struct transfer *, void *))dctransdetach,
3110 .gotdata = (void (*)(struct transfer *, void *))dctransgotdata,
3111 .endofdata = (void (*)(struct transfer *, void *))dctransendofdata,
3112 .wantdata = (void (*)(struct transfer *, void *))dcwantdata
3113};
3114
3115static struct fnet dcnet =
3116{
3117 .name = L"dc",
3118 .connect = hubconnect,
3119 .destroy = hubdestroy,
3120 .setnick = hubsetnick,
3121 .reqconn = hubreqconn,
3122 .sendchat = hubsendchat,
3123 .search = hubsearch,
3124 .filebasename = dcbasename
3125};
3126
3127static void peerread(struct socket *sk, struct dcpeer *peer)
3128{
3129 char *newbuf, *p;
3130 size_t datalen;
9a2d6cb8 3131 struct command *cmd;
d3372da9 3132
3133 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
3134 return;
3135 sizebuf2(peer->inbuf, peer->inbufdata + datalen, 1);
3136 memcpy(peer->inbuf + peer->inbufdata, newbuf, datalen);
3137 free(newbuf);
d3372da9 3138 peer->inbufdata += datalen;
9a2d6cb8 3139 if(peer->state == PEER_CMD)
d3372da9 3140 {
d3372da9 3141 p = peer->inbuf;
9a2d6cb8 3142 while((peer->inbufdata > 0) && (p = memchr(peer->inbuf, '|', peer->inbufdata)) != NULL)
3143 {
3144 *(p++) = 0;
3145 newqcmd(&peer->queue, peer->inbuf);
3146 for(cmd = peercmds; cmd->handler != NULL; cmd++)
3147 {
5eee9d66 3148 if(!memcmp(peer->inbuf, cmd->name, strlen(cmd->name)) && ((peer->inbuf[strlen(cmd->name)] == ' ') || (peer->inbuf[strlen(cmd->name)] == '|')))
9a2d6cb8 3149 break;
3150 }
5eee9d66 3151 memmove(peer->inbuf, p, peer->inbufdata -= p - peer->inbuf);
9a2d6cb8 3152 if(cmd->stop)
3153 {
3154 peer->state = PEER_STOP;
3155 break;
3156 }
9a2d6cb8 3157 }
3158 } else if(peer->state == PEER_TTHL) {
3159 handletthl(peer);
d3372da9 3160 }
3161}
3162
3163static void peererror(struct socket *sk, int err, struct dcpeer *peer)
3164{
3165 freedcpeer(peer);
3166}
3167
3168static void peerconnect(struct socket *sk, int err, struct fnetnode *fn)
3169{
3170 struct dcpeer *peer;
1c4b02cd 3171 struct dchub *hub;
d3372da9 3172
3173 if(err != 0)
3174 {
3175 putfnetnode(fn);
ff625695 3176 putsock(sk);
d3372da9 3177 return;
3178 }
1c4b02cd 3179 hub = fn->data;
d3372da9 3180 peer = newdcpeer(sk);
3181 peer->fn = fn;
3182 peer->accepted = 0;
1c4b02cd 3183 peer->dcppemu = hub->dcppemu;
d3372da9 3184 sk->readcb = (void (*)(struct socket *, void *))peerread;
3185 sk->errcb = (void (*)(struct socket *, int, void *))peererror;
3186 sk->data = peer;
3187 socksettos(sk, confgetint("fnet", "fnptos"));
d3372da9 3188 putsock(sk);
1e9d82b1 3189 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
9a2d6cb8 3190 sendmynick(peer);
3191 sendpeerlock(peer);
d3372da9 3192}
3193
3194static void peeraccept(struct socket *sk, struct socket *newsk, void *data)
3195{
3196 struct dcpeer *peer;
3197
3198 peer = newdcpeer(newsk);
3199 peer->accepted = 1;
3200 newsk->readcb = (void (*)(struct socket *, void *))peerread;
3201 newsk->errcb = (void (*)(struct socket *, int, void *))peererror;
3202 newsk->data = peer;
3203 socksettos(newsk, confgetint("fnet", "fnptos"));
1e9d82b1 3204 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 3205}
3206
3207static void updatehmlist(void)
3208{
3209 int i, lev, ic, ret;
3210 struct sharecache *node;
3211 char *buf, *buf2, numbuf[32];
3212 size_t bufsize, bufdata;
3213 int fd, ibuf;
3214
3215 bufdata = 0;
3216 buf = smalloc(bufsize = 65536);
3217 node = shareroot->child;
3218 lev = 0;
3219 while(1)
3220 {
3221 ic = 0;
1d85f24b 3222 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 3223 if((buf2 = icwcstombs(node->name, DCCHARSET)) != NULL)
3224 {
3225 for(i = 0; i < lev; i++)
3226 addtobuf(buf, 9);
3227 bufcat(buf, buf2, strlen(buf2));
3228 free(buf2);
3229 if(node->f.b.type == FILE_REG)
3230 {
3231 addtobuf(buf, '|');
3232 sprintf(numbuf, "%i", node->size);
3233 bufcat(buf, numbuf, strlen(numbuf));
3234 }
3235 addtobuf(buf, 13);
3236 addtobuf(buf, 10);
3237 } else {
3238 ic = 1;
3239 }
3240 if((node->child != NULL) && !ic)
3241 {
3242 lev++;
3243 node = node->child;
3244 } else if(node->next != NULL) {
3245 node = node->next;
3246 } else {
3247 while(node->next == NULL)
3248 {
3249 lev--;
3250 node = node->parent;
3251 if(node == shareroot)
3252 break;
3253 }
3254 if(node == shareroot)
3255 break;
3256 node = node->next;
3257 }
3258 }
3259 if(hmlistname != NULL)
3260 {
3261 unlink(hmlistname);
3262 free(hmlistname);
3263 }
3264 hmlistname = sstrdup("/tmp/dc-filelist-hm-XXXXXX");
3265 if((fd = mkstemp(hmlistname)) < 0)
3266 {
3267 flog(LOG_WARNING, "could not create HM file list tempfile: %s", strerror(errno));
3268 free(hmlistname);
3269 hmlistname = NULL;
3270 } else {
3271 /*
3272 * I do not want to implement a good Huffman encoder, and it's not
3273 * like Huffman encoding actually yields any impressive results
3274 * for DC file lists anyway, so I'll just output a bogus
3275 * tree. Implement a good encoder if you want to.
3276 */
3277 write(fd, "HE3\r\0", 5);
3278 write(fd, &bufdata, 4);
3279 ibuf = 256;
3280 write(fd, &ibuf, 2);
3281 ibuf = 8;
3282 for(i = 0; i < 256; i++)
3283 {
3284 write(fd, &i, 1);
3285 write(fd, &ibuf, 1);
3286 }
3287 for(i = 0; i < 256; i++)
3288 write(fd, &i, 1);
3289 for(buf2 = buf; bufdata > 0;)
3290 {
3291 if((ret = write(fd, buf2, bufdata)) < 0)
3292 {
3293 flog(LOG_WARNING, "could not write file list: %s", strerror(errno));
3294 break;
3295 }
3296 bufdata -= ret;
3297 buf2 += ret;
3298 }
3299 close(fd);
3300 }
3301 free(buf);
3302}
3303
3304static struct xmlent
3305{
3306 wchar_t c;
3307 wchar_t *ent;
3308} entities[] = {
3309 {L'&', L"&amp;"},
3310 {L'\"', L"&#34;"},
3311/* {L'\'', L"&quot;"}, Emulate DC++ escaping by omitting this. */
3312 {L'\0', NULL}
3313};
3314
3315static wchar_t *escapexml(wchar_t *src)
3316{
3317 static wchar_t *buf = NULL;;
3318 int ret, c;
3319 wchar_t nbuf[32];
3320 size_t bufsize, bufdata;
3321 struct xmlent *ent;
3322
3323 if(buf != NULL)
3324 free(buf);
3325 buf = NULL;
3326 bufsize = bufdata = 0;
3327 for(; *src != L'\0'; src++)
3328 {
3329 c = wctob(*src);
3330 if((c > 0) && (c < 32))
3331 {
3332 bufcat(buf, L"&#", 2);
3333 ret = swprintf(nbuf, (sizeof(nbuf) / sizeof(*nbuf)), L"%i", c);
3334 bufcat(buf, nbuf, ret);
3335 addtobuf(buf, L';');
3336 } else {
3337 for(ent = entities; ent->ent != NULL; ent++)
3338 {
3339 if(ent->c == *src)
3340 {
3341 bufcat(buf, ent->ent, wcslen(ent->ent));
3342 break;
3343 }
3344 }
3345 if(ent->ent == NULL)
3346 addtobuf(buf, *src);
3347 }
3348 }
3349 addtobuf(buf, L'\0');
3350 return(buf);
3351}
3352
3353static void updatexmllist(void)
3354{
3355 int i, fd, lev;
3356 FILE *fs;
3357 char cidbuf[14], *namebuf;
3358 char *hashbuf;
3359 struct sharecache *node;
3360
3361 if(xmllistname != NULL)
3362 {
3363 unlink(xmllistname);
3364 free(xmllistname);
3365 }
3366 xmllistname = sstrdup("/tmp/dc-filelist-dcxml-XXXXXX");
3367 if((fd = mkstemp(xmllistname)) < 0)
3368 {
3369 flog(LOG_WARNING, "could not create XML file list tempfile: %s", strerror(errno));
3370 free(xmllistname);
3371 xmllistname = NULL;
3372 return;
3373 }
3374 if((fs = fdopen(fd, "w")) == NULL)
3375 {
3376 flog(LOG_WARNING, "could not fdopen XML list fd %i: %s", fd, strerror(errno));
3377 unlink(xmllistname);
3378 free(xmllistname);
3379 xmllistname = NULL;
3380 close(fd);
3381 return;
3382 }
3383 fprintf(fs, "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?>\r\n");
3384 for(i = 0; i < sizeof(cidbuf) - 1; i++)
3385 cidbuf[i] = (rand() % ('Z' - 'A' + 1)) + 'A';
3386 cidbuf[i] = 0;
1c4b02cd 3387 if(confgetint("dc", "dcppemu"))
3388 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"DC++ 0.674\">\r\n", cidbuf);
3389 else
3390 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"%s\">\r\n", cidbuf, "DoldaConnect" VERSION);
d3372da9 3391
3392 node = shareroot->child;
3393 lev = 0;
3394 while(1)
3395 {
3396 if((namebuf = icswcstombs(escapexml(node->name), "UTF-8", NULL)) != NULL)
3397 {
3398 for(i = 0; i < lev; i++)
3399 fputc('\t', fs);
3400 if(node->child != NULL)
3401 {
3402 fprintf(fs, "<Directory Name=\"%s\">\r\n", namebuf);
3403 node = node->child;
3404 lev++;
3405 continue;
3406 } else {
3407 fprintf(fs, "<File Name=\"%s\" Size=\"%i\"", namebuf, node->size);
3408 if(node->f.b.hastth)
3409 {
3410 hashbuf = base32encode(node->hashtth, 24);
3411 fprintf(fs, " TTH=\"%.39s\"", hashbuf);
3412 free(hashbuf);
3413 }
3414 fprintf(fs, "/>\r\n");
3415 }
3416 while(node->next == NULL)
3417 {
3418 node = node->parent;
3419 if(node == shareroot)
3420 {
3421 break;
3422 } else {
3423 lev--;
3424 for(i = 0; i < lev; i++)
3425 fputc('\t', fs);
3426 fprintf(fs, "</Directory>\r\n");
3427 }
3428 }
3429 if(node == shareroot)
3430 break;
3431 node = node->next;
3432 }
3433 }
3434
1c4b02cd 3435 if(confgetint("dc", "dcppemu"))
3436 fprintf(fs, "</FileListing>");
3437 else
3438 fprintf(fs, "</FileListing>\r\n");
d3372da9 3439 fclose(fs);
3440}
3441
3442static void updatexmlbz2list(void)
3443{
3444 int err, fd;
3445 FILE *in;
3446 FILE *real;
3447 BZFILE *out;
3448 char buf[1024];
3449 size_t bufdata;
3450
3451 if(xmllistname == NULL)
3452 return;
3453 if((in = fopen(xmllistname, "r")) == NULL)
3454 {
3455 flog(LOG_WARNING, "could not open XML file list for bzipping: %s", strerror(errno));
3456 return;
3457 }
3458 if(xmlbz2listname != NULL)
3459 {
3460 unlink(xmlbz2listname);
3461 free(xmlbz2listname);
3462 }
3463 xmlbz2listname = sstrdup("/tmp/dc-filelist-dcxmlbz2-XXXXXX");
3464 if((fd = mkstemp(xmlbz2listname)) < 0)
3465 {
3466 flog(LOG_WARNING, "could not create bzipped XML file list tempfile: %s", strerror(errno));
3467 free(xmlbz2listname);
3468 xmlbz2listname = NULL;
3469 fclose(in);
3470 return;
3471 }
3472 if((real = fdopen(fd, "w")) == NULL)
3473 {
3474 flog(LOG_WARNING, "could not fdopen bzipped XML list fd %i: %s", fd, strerror(errno));
3475 close(fd);
3476 unlink(xmlbz2listname);
3477 free(xmlbz2listname);
3478 xmlbz2listname = NULL;
3479 fclose(in);
3480 return;
3481 }
3482 out = BZ2_bzWriteOpen(&err, real, 9, 0, 0);
3483 if(err != BZ_OK)
3484 {
3485 flog(LOG_WARNING, "could not open bzip2 stream from XML list");
3486 fclose(real);
3487 unlink(xmlbz2listname);
3488 free(xmlbz2listname);
3489 xmlbz2listname = NULL;
3490 fclose(in);
3491 return;
3492 }
3493 while(!feof(in))
3494 {
3495 bufdata = fread(buf, 1, sizeof(buf), in);
3496 BZ2_bzWrite(&err, out, buf, bufdata);
3497 }
3498 fclose(in);
3499 BZ2_bzWriteClose(&err, out, 0, NULL, NULL);
3500 fclose(real);
3501}
3502
3503static int shareupdate(unsigned long long uusharesize, void *data)
3504{
3505 updatehmlist();
3506 updatexmllist();
3507 updatexmlbz2list();
3508 return(0);
3509}
3510
3511static void dispatchcommand(struct qcommand *qcmd, struct command *cmdlist, struct socket *sk, void *data)
3512{
3513 char *p;
3514 struct command *cmd;
3515
3516 if((p = strchr(qcmd->string, ' ')) != NULL)
3517 *(p++) = 0;
3518 for(cmd = cmdlist; cmd->handler != NULL; cmd++)
3519 {
3520 if(!strcmp(cmd->name, qcmd->string))
3521 break;
3522 }
3523 if(cmd->handler != NULL)
3524 cmd->handler(sk, data, qcmd->string, p);
3525/*
3526 else
3527 flog(LOG_DEBUG, "Unimplemented DC command: %s \"%s\"", qcmd->string, p?p:"noargs");
3528*/
3529}
3530
3531static int run(void)
3532{
3533 struct fnetnode *fn, *nextfn;
3534 struct dchub *hub;
3535 struct dcpeer *peer, *nextpeer;
3536 struct qcommand *qcmd;
3537 int ret;
3538
3539 ret = 0;
3540 for(fn = fnetnodes; fn != NULL; fn = nextfn)
3541 {
3542 nextfn = fn->next;
3543 if(fn->fnet != &dcnet)
3544 continue;
3545 if(fn->data == NULL)
3546 continue;
3547 hub = (struct dchub *)fn->data;
3548 if((qcmd = ulqcmd(&hub->queue)) != NULL)
3549 {
3550 if(*qcmd->string == '$')
3551 {
3552 if((fn->sk != NULL) && (fn->sk->state == SOCK_EST))
3553 dispatchcommand(qcmd, hubcmds, fn->sk, fn);
3554 } else if(*qcmd->string != 0) {
3555 hubrecvchat(fn->sk, fn, NULL, qcmd->string);
3556 }
3557 freeqcmd(qcmd);
3558 ret = 1;
3559 break;
3560 }
3561 }
3562 for(peer = peers; peer != NULL; peer = nextpeer)
3563 {
3564 nextpeer = peer->next;
3565 if((qcmd = ulqcmd(&peer->queue)) != NULL)
3566 {
1e9d82b1 3567 if(peer->timeout != NULL)
3568 canceltimer(peer->timeout);
3569 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 3570 if(*qcmd->string == '$')
3571 dispatchcommand(qcmd, peercmds, peer->sk, peer);
3572 freeqcmd(qcmd);
3573 ret = 1;
3574 break;
3575 }
3576 }
3577 return(ret);
3578}
3579
3580static void preinit(int hup)
3581{
3582 if(hup)
3583 return;
3584 regfnet(&dcnet);
3585}
3586
3587static int updateudpport(struct configvar *var, void *uudata)
3588{
3589 struct sockaddr_in addr;
3590 struct socket *newsock;
3591
3592 memset(&addr, 0, sizeof(addr));
3593 addr.sin_family = AF_INET;
3594 addr.sin_port = htons(var->val.num);
3595 if((newsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3596 {
3597 flog(LOG_WARNING, "could not create new DC UDP socket, reverting to old: %s", strerror(errno));
3598 return(0);
3599 }
3600 newsock->readcb = udpread;
3601 if(udpsock != NULL)
3602 putsock(udpsock);
3603 udpsock = newsock;
3604 return(0);
3605}
3606
3607static int updatetcpport(struct configvar *var, void *uudata)
3608{
3609 struct sockaddr_in addr;
3610 struct socket *newsock;
3611
3612 memset(&addr, 0, sizeof(addr));
3613 addr.sin_family = AF_INET;
3614 addr.sin_port = htons(var->val.num);
3615 if((newsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3616 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3617 if(tcpsock != NULL)
3618 putsock(tcpsock);
3619 tcpsock = newsock;
3620 return(0);
3621}
3622
3623static int init(int hup)
3624{
3625 struct sockaddr_in addr;
3626
3627 if(!hup)
3628 {
3629 GCBREG(sharechangecb, shareupdate, NULL);
3630 if(udpsock != NULL)
3631 putsock(udpsock);
3632 if(tcpsock != NULL)
3633 putsock(tcpsock);
3634 addr.sin_family = AF_INET;
3635 memset(&addr.sin_addr, 0, sizeof(addr.sin_addr));
3636 addr.sin_port = htons(confgetint("dc", "udpport"));
3637 if((udpsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3638 {
3639 flog(LOG_CRIT, "could not create DC UDP socket: %s", strerror(errno));
3640 return(1);
3641 }
3642 udpsock->readcb = udpread;
3643 addr.sin_port = htons(confgetint("dc", "tcpport"));
3644 if((tcpsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3645 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3646 CBREG(confgetvar("dc", "udpport"), conf_update, updateudpport, NULL, NULL);
3647 CBREG(confgetvar("dc", "tcpport"), conf_update, updatetcpport, NULL, NULL);
3648 CBREG(confgetvar("net", "mode"), conf_update, updatetcpport, NULL, NULL);
3649 }
3650 return(0);
3651}
3652
3653static void terminate(void)
3654{
3655 if(hmlistname != NULL)
3656 {
3657 unlink(hmlistname);
3658 free(hmlistname);
3659 }
3660 if(xmllistname != NULL)
3661 {
3662 unlink(xmllistname);
3663 free(xmllistname);
3664 }
3665 if(xmlbz2listname != NULL)
3666 {
3667 unlink(xmlbz2listname);
3668 free(xmlbz2listname);
3669 }
3670}
3671
3672static struct configvar myvars[] =
3673{
3674 {CONF_VAR_STRING, "desc", {.str = L""}},
3675 {CONF_VAR_STRING, "speedstring", {.str = L"LAN(T1)"}},
3676 {CONF_VAR_STRING, "email", {.str = L"spam@spam.org"}},
3677 {CONF_VAR_INT, "udpport", {.num = 0}},
3678 {CONF_VAR_INT, "tcpport", {.num = 0}},
1c4b02cd 3679 {CONF_VAR_BOOL, "dcppemu", {.num = 0}},
d3372da9 3680 {CONF_VAR_END}
3681};
3682
3683static struct module me =
3684{
3685 .conf =
3686 {
3687 .vars = myvars
3688 },
3689 .preinit = preinit,
3690 .init = init,
3691 .run = run,
3692 .terminate = terminate,
3693 .name = "dc"
3694};
3695
3696MODULE(me)
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