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Close the socket upon erroneous exit as well.
[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;
c7185019 1086 int dotth;
1087 size_t buflen;
d3372da9 1088 int termnum, satisfied, skipcheck;
1089 int level, tersat[32];
1090 wchar_t *terms[32];
1091 char hashtth[24];
1092
1093 hub = fn->data;
1094 if((p = strchr(args, ' ')) == NULL)
1095 return;
1096 *(p++) = 0;
1097
1098 memset(terms, 0, sizeof(terms));
1099 prefix = infix = postfix = NULL;
1100 dsk = NULL;
1101 dotth = 0;
1102
1103 if(!strncmp(args, "Hub:", 4))
1104 {
1105 if(!strcmp(cmd, "$MultiSearch"))
1106 goto out;
1107 if(!strcmp(args + 4, hub->nativenick))
1108 goto out;
1109 prefix = sprintf2("$SR %s ", hub->nativenick);
1110 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1111 postfix = sprintf2(" (%s)\005%s|", formataddress(fn->sk->remote, fn->sk->remotelen), args + 4);
1112 dsk = sk;
1113 getsock(dsk);
1114 } else {
1115 if((p2 = strchr(args, ':')) == NULL)
1116 goto out;
1117 *(p2++) = 0;
1118 addr.sin_family = AF_INET;
1119 if(!inet_aton(args, &addr.sin_addr))
1120 goto out;
1121 addr.sin_port = htons(atoi(p2));
1122 prefix = sprintf2("$SR %s ", hub->nativenick);
1123 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1124 postfix = sprintf2(" (%s)|", formataddress(fn->sk->remote, fn->sk->remotelen));
1125 netdgramconn(dsk = netdupsock(udpsock), (struct sockaddr *)&addr, sizeof(addr));
1126 }
1127
1128 minsize = maxsize = -1;
1129 if(*p == 0)
1130 goto out;
1131 if(*(p++) == 'T')
1132 minsize = 0;
1133 if(*(p++) != '?')
1134 goto out;
1135 if(*p == 0)
1136 goto out;
9d8cf743 1137 if((*(p++) == 'T') && (minsize == 0))
d3372da9 1138 {
1139 maxsize = 0;
1140 minsize = -1;
1141 }
1142 if(*(p++) != '?')
1143 goto out;
1144 if((p2 = strchr(p, '?')) == NULL)
1145 goto out;
1146 *(p2++) = 0;
1147 if(minsize == 0)
1148 minsize = atoi(p);
1149 if(maxsize == 0)
1150 maxsize = atoi(p);
1151 p = p2 + 1;
1152 if(*(p++) != '?')
1153 goto out;
1154 termnum = 0;
1155 p2 = p;
1156 done = 0;
1157 while(!done)
1158 {
1159 if((*p2 == 0) || (*p2 == '$'))
1160 {
1161 if(*p2 == 0)
1162 done = 1;
1163 else
1164 *p2 = 0;
1165 if(*p)
1166 {
1167 if(!dotth && !strncmp(p, "TTH:", 4))
1168 {
1169 dotth = 1;
1170 if((buf = base32decode(p + 4, &buflen)) == NULL)
1171 goto out;
1172 if(buflen != 24)
1173 goto out;
1174 memcpy(hashtth, buf, 24);
1175 free(buf);
1176 } else {
1d85f24b 1177 if((terms[termnum] = icmbstowcs(p, hub->charset)) != NULL)
d3372da9 1178 termnum++;
1179 }
1180 }
1181 p = p2 + 1;
1182 if(termnum == 32)
1183 break;
1184 }
1185 p2++;
1186 }
1187
1188 node = shareroot->child;
1189 level = 0;
1190 for(i = 0; i < termnum; i++)
1191 tersat[i] = -1;
1192 satisfied = 0;
1193 while(1)
1194 {
1195 skipcheck = 0;
1196 if(node->f.b.type == FILE_REG)
1197 {
1198 if((minsize >= 0) && (node->size < minsize))
1199 skipcheck = 1;
1200 if((maxsize >= 0) && (node->size > maxsize))
1201 skipcheck = 1;
1202 }
1203 if(!skipcheck && dotth)
1204 {
1205 if((node->f.b.type != FILE_REG) || (node->f.b.hastth && memcmp(hashtth, node->hashtth, 24)))
1206 skipcheck = 1;
1207 }
1208 if(!skipcheck)
1209 {
1210 for(i = 0; i < termnum; i++)
1211 {
1212 if(tersat[i] >= 0)
1213 continue;
1214 if(wcsexists(node->name, terms[i]))
1215 {
1216 tersat[i] = level;
1217 satisfied++;
1218 } else if(node->child == NULL) {
1219 break;
1220 }
1221 }
1222 }
1223 if(!skipcheck && (satisfied == termnum))
1224 {
1d85f24b 1225 /* Use DCCHARSET in $Get paths until further researched... */
1226 if((buf = getdcpath(node, NULL, DCCHARSET)) != NULL)
d3372da9 1227 {
1228 if(node->f.b.hastth)
1229 {
1230 buf2 = base32encode(node->hashtth, 24);
1231 qstrf(dsk, "%s%s\005%i%sTTH:%.39s%s", prefix, buf, node->size, infix, buf2, postfix);
1232 free(buf2);
1233 } else {
1234 qstrf(dsk, "%s%s\005%i%s%s%s", prefix, buf, node->size, infix, hub->nativename, postfix);
1235 }
1236 free(buf);
1237 }
1238 }
1239 if((!skipcheck && (satisfied == termnum)) || (node->child == NULL))
1240 {
1241 while(node->next == NULL)
1242 {
1243 if((node = node->parent) == shareroot)
1244 break;
1245 level--;
1246 }
1247 if(node == shareroot)
1248 break;
1249 for(i = 0; i < termnum; i++)
1250 {
1251 if(tersat[i] >= level)
1252 {
1253 tersat[i] = -1;
1254 satisfied--;
1255 }
1256 }
1257 node = node->next;
1258 } else {
1259 node = node->child;
1260 level++;
1261 }
1262 }
1263
1264 hubhandleaction(sk, fn, cmd, args);
1265
1266 out:
1267 if(dsk != NULL)
1268 putsock(dsk);
1269 if(prefix != NULL)
1270 free(prefix);
1271 if(infix != NULL)
1272 free(infix);
1273 if(postfix != NULL)
1274 free(postfix);
1275 for(i = 0; (i < 32) && (terms[i] != NULL); i++)
1276 free(terms[i]);
1277}
1278
1279static void cmd_connecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1280{
1281 char *p;
1282 struct dchub *hub;
1283 struct socket *newsk;
1284 struct sockaddr_in addr;
1285
1286 hub = fn->data;
1287 if((p = strchr(args, ' ')) == NULL)
1288 return;
1289 *(p++) = 0;
1290 if(strcmp(args, hub->nativenick))
1291 return;
1292 addr.sin_family = AF_INET;
1293 args = p;
1294 if((p = strchr(args, ':')) == NULL)
1295 return;
1296 *(p++) = 0;
1297 addr.sin_port = htons(atoi(p));
1298 if(!inet_aton(args, &addr.sin_addr))
1299 return;
1300 newsk = netcsconn((struct sockaddr *)&addr, sizeof(addr), (void (*)(struct socket *, int, void *))peerconnect, fn);
1301 getfnetnode(fn);
1302 hubhandleaction(sk, fn, cmd, args);
1303}
1304
1305static void sendctm(struct socket *sk, char *nick)
1306{
1307 struct sockaddr *addr;
1308 socklen_t addrlen;
1309
1310 if(tcpsock == NULL)
1311 return;
1312 if(sockgetremotename(tcpsock, &addr, &addrlen) < 0)
1313 return;
1314 if(addr->sa_family == AF_INET)
1315 qstrf(sk, "$ConnectToMe %s %s|", nick, formataddress(addr, addrlen));
1316 else
1317 flog(LOG_WARNING, "Direct Connect TCP socket is suddenly not AF_INET, but %i", addr->sa_family);
1318 free(addr);
1319}
1320
1321static void cmd_revconnecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1322{
1323 struct dchub *hub;
1324 char *p;
1325
1326 hub = fn->data;
1327 if((p = strchr(args, ' ')) == NULL)
1328 return;
1329 *(p++) = 0;
1330 if(strcmp(p, hub->nativenick))
1331 return;
1332 sendctm(sk, args);
1333 expectpeer(args, fn);
1334 hubhandleaction(sk, fn, cmd, args);
1335}
1336
1337static void cmd_getnetinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1338{
1339 struct dchub *hub;
1340 struct fnetnode *node;
1341 int numhubs;
1342
1343 hub = fn->data;
1344 numhubs = 0;
1345 for(node = fnetnodes; node != NULL; node = node->next)
1346 {
1347 if(node->state == FNN_EST)
1348 numhubs++;
1349 }
1350 qstrf(sk, "$NetInfo %i$%i$%c$0|", confgetint("transfer", "slots"), numhubs, (tcpsock == NULL)?'P':'A');
1351 hubhandleaction(sk, fn, cmd, args);
1352}
1353
1354static void cmd_to(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1355{
1356 struct dchub *hub;
1357 char *p, *p2;
1358
1359 hub = fn->data;
1360 p = args;
1361 if((p2 = strchr(p, ' ')) == NULL)
1362 return;
1363 *(p2++) = 0;
1364 p = p2;
1365 if((p2 = strchr(p, ' ')) == NULL)
1366 return;
1367 *(p2++) = 0;
1368 if(strcmp(p, "From:"))
1369 return;
1370 p = p2;
1371 if((p2 = strstr(p, " $")) == NULL)
1372 return;
1373 *p2 = 0;
1374 p2 += 2;
1375 hubrecvchat(fn->sk, fn, p, p2);
1376 hubhandleaction(sk, fn, cmd, args);
1377}
1378
1379static void cmd_sr(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1380{
1381 struct dchub *hub;
d86b7a9f 1382 char *p, *p2, *buf;
d3372da9 1383 char *nick, *filename, *hubname;
1384 int size, slots;
d86b7a9f 1385 size_t buflen;
d3372da9 1386 struct srchres *sr;
1387 wchar_t *wnick, *wfile;
1388
1389 hub = fn->data;
1390 nick = p = args;
1391 if((p2 = strchr(p, ' ')) == NULL)
1392 return;
1393 *p2 = 0;
1394 p = p2 + 1;
1395 filename = p;
1396 if((p2 = strchr(p, 5)) == NULL)
1397 return;
1398 *p2 = 0;
1399 p = p2 + 1;
1400 if((p2 = strchr(p, ' ')) == NULL)
1401 return;
1402 *p2 = 0;
1403 size = atoi(p);
1404 p = p2 + 1;
1405 if((p2 = strchr(p, '/')) == NULL)
1406 return;
1407 *p2 = 0;
1408 slots = atoi(p);
1409 p = p2 + 1;
1410 if((p2 = strchr(p, 5)) == NULL)
1411 return;
1412 p = p2 + 1;
1413 hubname = p;
1414 if((p2 = strstr(p, " (")) == NULL)
1415 return;
1416 *p2 = 0;
1d85f24b 1417 if((wnick = icmbstowcs(nick, hub->charset)) == NULL)
d3372da9 1418 return;
1d85f24b 1419 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 1420 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
1421 {
1422 free(wnick);
1423 return;
1424 }
1425 sr = newsrchres(&dcnet, wfile, wnick);
1426 if(sr->peernick != NULL)
1427 free(sr->peernick);
1428 sr->peernick = swcsdup(wnick);
1429 sr->size = size;
1430 sr->slots = slots;
1431 free(wfile);
1432 free(wnick);
d86b7a9f 1433 if(!strncmp(hubname, "TTH:", 4))
1434 {
1435 if((buf = base32decode(hubname + 4, &buflen)) != NULL)
1436 {
1437 if(buflen == 24)
1438 sr->hash = newhash(L"TTH", 24, buf);
1439 free(buf);
1440 }
1441 }
d3372da9 1442 getfnetnode(sr->fn = fn);
1443 submitsrchres(sr);
1444 freesrchres(sr);
1445 hubhandleaction(sk, fn, cmd, args);
1446}
1447
1448static void cmd_usercommand(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1449{
1450 /* Do nothing for now. */
1451}
1452
48509089 1453static void cmd_getpass(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1454{
1455 struct dchub *hub;
1c4b02cd 1456 wchar_t *pw;
48509089 1457 char *mbspw;
1458
1459 hub = fn->data;
1c4b02cd 1460 pw = wpfind(fn->args, L"password");
1d85f24b 1461 if((pw == NULL) || ((mbspw = icwcstombs(pw, hub->charset)) == NULL))
48509089 1462 {
1463 killfnetnode(fn);
1464 return;
1465 }
1466 qstrf(sk, "$MyPass %s|", mbspw);
1467 free(mbspw);
fcd0627b 1468 fn->regstatus = FNNS_REG;
48509089 1469 hubhandleaction(sk, fn, cmd, args);
1470}
1471
c9b3ad74 1472static void cmd_logedin(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1473{
1474 struct dchub *hub;
1475
1476 hub = fn->data;
fcd0627b 1477 fn->regstatus = FNNS_OP;
c9b3ad74 1478 hubhandleaction(sk, fn, cmd, args);
1479}
1480
d3372da9 1481static void cmd_mynick(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1482{
9a2d6cb8 1483 struct dcexppeer *expect;
1c4b02cd 1484 struct dchub *hub;
9a2d6cb8 1485
d3372da9 1486 if(peer->nativename != NULL)
1487 free(peer->nativename);
1488 peer->nativename = sstrdup(args);
1489 if(peer->wcsname != NULL)
1490 free(peer->wcsname);
1d85f24b 1491 if((peer->wcsname = icmbstowcs(peer->nativename, peer->charset)) == NULL)
d3372da9 1492 {
1493 freedcpeer(peer);
1494 return;
1495 }
9a2d6cb8 1496 if(peer->accepted)
1497 {
1498 for(expect = expected; expect != NULL; expect = expect->next)
1499 {
1500 if(!strcmp(expect->nick, args))
1501 break;
1502 }
1503 if(expect == NULL)
1504 {
1505 peer->fn = NULL;
1506 } else {
1c4b02cd 1507 hub = expect->fn->data;
9a2d6cb8 1508 peer->fn = expect->fn;
1509 getfnetnode(peer->fn);
1c4b02cd 1510 peer->dcppemu = hub->dcppemu;
9a2d6cb8 1511 freeexppeer(expect);
1512 }
1513 }
d3372da9 1514}
1515
1516static void cmd_direction(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1517{
1518 char *p;
9a2d6cb8 1519 int mydir;
1520 struct transfer *transfer;
d3372da9 1521
1522 if((p = strchr(args, ' ')) == NULL)
1523 return;
1524 *p = 0;
1525 if(!strcmp(args, "Upload"))
9a2d6cb8 1526 mydir = TRNSD_DOWN;
d3372da9 1527 if(!strcmp(args, "Download"))
9a2d6cb8 1528 mydir = TRNSD_UP;
1529 if(peer->accepted)
1530 {
1531 if((peer->transfer == NULL) || (mydir != peer->direction))
1532 {
1533 freedcpeer(peer);
1534 return;
1535 }
1b14d3d8 1536 if(peer->direction == TRNSD_DOWN)
1537 requestfile(peer);
9a2d6cb8 1538 } else {
1539 if(peer->wcsname == NULL)
1540 {
1541 freedcpeer(peer);
1542 return;
1543 }
1544 peer->direction = mydir;
1545 if(peer->direction == TRNSD_UP)
1546 {
1547 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1548 } else {
1549 if((transfer = finddownload(peer->wcsname)) == NULL)
1550 {
1551 freedcpeer(peer);
1552 return;
1553 }
1554 transferattach(transfer, &dctransfer, peer);
1555 transfersetstate(transfer, TRNS_HS);
1556 }
1557 transfersetnick(transfer, peer->wcsname);
1558 peer->transfer = transfer;
1559 if(peer->extended)
1560 sendsupports(peer);
1561 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1562 if(peer->key != NULL)
1563 qstrf(sk, "$Key %s|", peer->key);
1564 if(peer->direction == TRNSD_DOWN)
1565 requestfile(peer);
1566 }
d3372da9 1567}
1568
1569static void cmd_peerlock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1570{
9a2d6cb8 1571 char *p, *key;
1572 struct transfer *transfer;
d3372da9 1573
1574 if((p = strchr(args, ' ')) == NULL)
1575 return;
1576 *p = 0;
1577 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
1578 peer->extended = 1;
9a2d6cb8 1579 key = dcmakekey(args);
1580 if(peer->accepted)
1581 {
1582 if(peer->wcsname == NULL)
1583 {
1584 freedcpeer(peer);
1585 return;
1586 }
1587 sendmynick(peer);
1588 sendpeerlock(peer);
1589 if(peer->extended)
1590 sendsupports(peer);
1591 if((transfer = finddownload(peer->wcsname)) == NULL)
1592 {
1593 peer->direction = TRNSD_UP;
1594 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1595 } else {
1596 peer->direction = TRNSD_DOWN;
1597 transferattach(transfer, &dctransfer, peer);
1598 transfersetstate(transfer, TRNS_HS);
1599 }
1600 transfersetnick(transfer, peer->wcsname);
1601 peer->transfer = transfer;
1602 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1603 qstrf(sk, "$Key %s|", key);
62da2712 1604 free(key);
9a2d6cb8 1605 } else {
1606 if(peer->key != NULL)
1607 free(peer->key);
1608 peer->key = key;
1609 }
d3372da9 1610}
1611
1612static void cmd_key(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1613{
9a2d6cb8 1614 /* NOP */
1615}
1616
1617static void startdl(struct dcpeer *peer)
1618{
1e9d82b1 1619 if(peer->timeout != NULL)
1620 canceltimer(peer->timeout);
9a2d6cb8 1621 peer->state = PEER_TRNS;
1622 transferstartdl(peer->transfer, peer->sk);
1623 peer->sk->readcb = (void (*)(struct socket *, void *))transread;
1624 peer->sk->errcb = (void (*)(struct socket *, int, void *))transerr;
1625}
1626
1627static void startul(struct dcpeer *peer)
1628{
1e9d82b1 1629 if(peer->timeout != NULL)
1630 canceltimer(peer->timeout);
9a2d6cb8 1631 peer->state = PEER_TRNS;
1632 transferstartul(peer->transfer, peer->sk);
1633 peer->sk->writecb = (void (*)(struct socket *, void *))transwrite;
d3372da9 1634}
1635
1636static void cmd_filelength(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1637{
1638 int size;
1fc81821 1639 struct transfer *transfer;
d3372da9 1640
1641 if(peer->transfer == NULL)
1642 {
1643 freedcpeer(peer);
1644 return;
1645 }
1646 size = atoi(args);
9a2d6cb8 1647 if(peer->transfer->size != size)
d3372da9 1648 {
d3372da9 1649 transfersetsize(peer->transfer, size);
1fc81821 1650 transfer = peer->transfer;
d3372da9 1651 freedcpeer(peer);
1fc81821 1652 trytransferbypeer(transfer->fnet, transfer->peerid);
d3372da9 1653 return;
1654 }
9a2d6cb8 1655 startdl(peer);
1656 qstr(peer->sk, "$Send|");
d3372da9 1657}
1658
1659static void cmd_error(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1660{
df873cd0 1661 if(peer->fetchingtthl)
1662 {
1663 peer->fetchingtthl = 0;
1664 peer->notthl = 1;
1665 requestfile(peer);
1666 return;
1667 }
d3372da9 1668 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1669 {
1670 transferseterror(peer->transfer, TRNSE_NOTFOUND);
1671 resettransfer(peer->transfer);
1672 return;
1673 }
1674 freedcpeer(peer);
1675}
1676
1677static void cmd_maxedout(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1678{
1679 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1680 {
1681 transferseterror(peer->transfer, TRNSE_NOSLOTS);
1682 resettransfer(peer->transfer);
1683 return;
1684 }
1685 freedcpeer(peer);
1686}
1687
1688static struct
1689{
1690 char *name;
1691 char **file;
1692 void (*func)(void);
1693} lists[] =
1694{
1695 {"MyList.DcLst", &hmlistname, updatehmlist},
1696 {"files.xml", &xmllistname, updatexmllist},
1697 {"files.xml.bz2", &xmlbz2listname, updatexmlbz2list},
1698 {NULL, NULL}
1699};
1700
1701static int openfilelist(char *name)
1702{
1703 int i, fd;
1704 int errnobak;
1705
1706 for(i = 0; lists[i].name != NULL; i++)
1707 {
1708 if(!strcmp(name, lists[i].name))
1709 break;
1710 }
1711 errno = 0;
1712 if(lists[i].name == NULL)
1713 return(-1);
1714 fd = -1;
1715 if((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0))
1716 lists[i].func();
1717 if((fd < 0) && ((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0)))
1718 {
1719 errnobak = errno;
1720 flog(LOG_ERR, "could not open filelist tempfile: %s", strerror(errno));
1721 errno = errnobak;
1722 return(-1);
1723 }
1724 return(fd);
1725}
1726
1727static struct sharecache *findbytth(char *tth32)
1728{
1729 char *buf;
1730 size_t buflen;
1731 struct sharecache *node;
1732
1733 if((buf = base32decode(tth32, &buflen)) == NULL)
1734 return(NULL);
1735 if(buflen != 24)
1736 {
1737 free(buf);
1738 return(NULL);
1739 }
1740 for(node = shareroot->child; node != NULL; node = nextscnode(node))
1741 {
1742 if(node->f.b.hastth && !memcmp(node->hashtth, buf, 24))
1743 break;
1744 }
1745 free(buf);
1746 return(node);
1747}
1748
1749static struct sharecache *resdcpath(char *path, char *charset, char sep)
1750{
1751 struct sharecache *node;
1752 char *p, *p2;
1753
1754 node = shareroot;
1755 p = path;
1756 while(p != NULL)
1757 {
1758 if((p2 = strchr(p, sep)) != NULL)
1759 *(p2++) = 0;
1760 if((node = findcache(node, icsmbstowcs(p, charset, L""))) == NULL)
1761 return(NULL);
1762 p = p2;
1763 }
1764 return(node);
1765}
1766
1767static void cmd_get(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1768{
1769 int offset;
1770 char *p, *buf;
1771 wchar_t *buf2;
1772 struct sharecache *node;
1773 struct socket *lesk;
1774 int fd;
1775 struct stat sb;
1776
1777 if(peer->transfer == NULL)
1778 {
1779 freedcpeer(peer);
1780 return;
1781 }
1782 if((p = strchr(args, '$')) == NULL)
1783 {
1784 freedcpeer(peer);
1785 return;
1786 }
1787 *(p++) = 0;
1788 if((offset = (atoi(p) - 1)) < 0)
1789 {
1790 freedcpeer(peer);
1791 return;
1792 }
1793 if(((fd = openfilelist(args)) < 0) && (errno != 0))
1794 {
1795 qstr(sk, "$Error Could not send file list|");
1796 freedcpeer(peer);
1797 return;
1798 } else if(fd >= 0) {
1799 if((buf2 = icsmbstowcs(args, DCCHARSET, NULL)) != NULL)
1800 transfersetpath(peer->transfer, buf2);
f00d7432 1801 peer->transfer->flags.b.minislot = 1;
d3372da9 1802 }
1803 if(fd < 0)
1804 {
1d85f24b 1805 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 1806 if((node = resdcpath(args, DCCHARSET, '\\')) == NULL)
1807 {
1808 qstrf(sk, "$Error File not in share|");
1809 freedcpeer(peer);
1810 return;
1811 }
1812 if((fd = opensharecache(node)) < 0)
1813 {
1814 qstrf(sk, "$Error %s|", strerror(errno));
1815 freedcpeer(peer);
1816 return;
1817 }
1818 buf = getfspath(node);
1819 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1820 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1821 else
1822 transfersetpath(peer->transfer, buf2);
1823 free(buf);
1824 }
1825 if(fstat(fd, &sb) < 0)
1826 {
1827 close(fd);
1828 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1829 qstrf(sk, "$Error|");
1830 freedcpeer(peer);
1831 return;
1832 }
f00d7432 1833 if(sb.st_size < 65536)
1834 peer->transfer->flags.b.minislot = 1;
1835 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
565006d1 1836 close(fd);
f00d7432 1837 qstr(sk, "$MaxedOut|");
1838 freedcpeer(peer);
1839 return;
1840 }
d3372da9 1841 if((offset != 0) && (lseek(fd, offset, SEEK_SET) < 0))
1842 {
1843 close(fd);
1844 qstrf(sk, "$Error Offset out of range|");
1845 freedcpeer(peer);
1846 return;
1847 }
1848 lesk = wrapsock(fd);
1849 transferprepul(peer->transfer, sb.st_size, offset, -1, lesk);
1850 putsock(lesk);
1851 qstrf(sk, "$FileLength %i|", peer->transfer->size);
d3372da9 1852}
1853
1854static void cmd_send(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1855{
1856 if(peer->transfer == NULL)
1857 {
1858 freedcpeer(peer);
1859 return;
1860 }
1861 if(peer->transfer->localend == NULL)
1862 {
1863 freedcpeer(peer);
1864 return;
1865 }
1866 peer->ptclose = 1;
9a2d6cb8 1867 startul(peer);
d3372da9 1868}
1869
1870static void cmd_supports(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1871{
1872 int i;
1873 char *p, *p2;
1874 char **arr;
1875 size_t arrsize, arrdata;
1876
1877 if(peer->supports != NULL)
1878 {
1879 for(i = 0; peer->supports[i] != NULL; i++)
1880 free(peer->supports[i]);
1881 free(peer->supports);
1882 }
1883 arr = NULL;
1884 arrsize = arrdata = 0;
1885 p = args;
1886 do
1887 {
1888 if((p2 = strchr(p, ' ')) != NULL)
1889 *(p2++) = 0;
1890 if(*p == 0)
1891 continue;
1892 addtobuf(arr, sstrdup(p));
1893 } while((p = p2) != NULL);
1894 addtobuf(arr, NULL);
1895 peer->supports = arr;
d3372da9 1896}
1897
1898static void cmd_getblock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1899{
1900 int fd;
1901 char *p, *p2;
1902 int start, numbytes;
1903 char *charset, *buf;
1904 wchar_t *buf2;
1905 struct sharecache *node;
1906 struct stat sb;
1907 struct socket *lesk;
1908
1909 if(peer->transfer == NULL)
1910 {
1911 freedcpeer(peer);
1912 return;
1913 }
1914 p = args;
1915 if((p2 = strchr(p, ' ')) == NULL)
1916 {
1917 freedcpeer(peer);
1918 return;
1919 }
1920 *(p2++) = 0;
1921 start = atoi(p);
1922 p = p2;
1923 if((p2 = strchr(p, ' ')) == NULL)
1924 {
1925 freedcpeer(peer);
1926 return;
1927 }
1928 *(p2++) = 0;
1929 numbytes = atoi(p);
1930 p = p2;
1931 if(!strcmp(cmd, "$UGetBlock") || !strcmp(cmd, "$UGetZBlock"))
1932 charset = "UTF-8";
1933 else
1d85f24b 1934 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 1935 charset = DCCHARSET;
1936 if(!strcmp(cmd, "$GetZBlock") || !strcmp(cmd, "$UGetZBlock"))
1937 initcompress(peer, CPRS_ZLIB);
1938 if(((fd = openfilelist(p)) < 0) && (errno != 0))
1939 {
1940 qstr(sk, "$Error Could not send file list|");
1941 return;
1942 } else if(fd >= 0) {
1943 if((buf2 = icsmbstowcs(args, charset, NULL)) != NULL)
1944 transfersetpath(peer->transfer, buf2);
f00d7432 1945 peer->transfer->flags.b.minislot = 1;
d3372da9 1946 }
1947 if(fd < 0)
1948 {
d3372da9 1949 if((node = resdcpath(p, charset, '\\')) == NULL)
1950 {
1951 qstr(sk, "$Error File not in cache|");
1952 return;
1953 }
1954 if((fd = opensharecache(node)) < 0)
1955 {
1956 qstrf(sk, "$Error %s|", strerror(errno));
1957 return;
1958 }
1959 buf = getfspath(node);
1960 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1961 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1962 else
1963 transfersetpath(peer->transfer, buf2);
1964 free(buf);
1965 }
1966 if(fstat(fd, &sb) < 0)
1967 {
1968 close(fd);
1969 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1970 qstr(sk, "$Error|");
1971 return;
1972 }
f00d7432 1973 if(sb.st_size < 65536)
1974 peer->transfer->flags.b.minislot = 1;
1975 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
565006d1 1976 close(fd);
f00d7432 1977 qstr(sk, "$MaxedOut|");
1978 return;
1979 }
d3372da9 1980 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
1981 {
1982 close(fd);
1983 qstr(sk, "$Error Offset out of range|");
1984 return;
1985 }
1986 if((numbytes < 0) || (start + numbytes > sb.st_size))
1987 numbytes = sb.st_size - start;
1988 lesk = wrapsock(fd);
1989 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
1990 putsock(lesk);
1991 qstrf(sk, "$Sending %i|", numbytes);
9a2d6cb8 1992 startul(peer);
d3372da9 1993}
1994
1995static void cmd_adcget(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1996{
1997 int i;
1998 char **argv, *buf;
1999 int start, numbytes;
2000 struct sharecache *node;
2001 struct stat sb;
2002 struct socket *lesk;
2003 wchar_t *wbuf;
2004 int fd;
2005
2006 if(peer->transfer == NULL)
2007 {
2008 freedcpeer(peer);
2009 return;
2010 }
2011 if((argv = parseadc(args)) == NULL)
2012 {
2013 freedcpeer(peer);
2014 return;
2015 }
2016 if(parrlen(argv) < 4)
2017 {
2018 freedcpeer(peer);
2019 goto out;
2020 }
2021 start = atoi(argv[2]);
2022 numbytes = atoi(argv[3]);
2023 node = NULL;
2024 fd = -1;
2025 if(((fd = openfilelist(argv[1])) < 0) && (errno != 0))
2026 {
2027 qstr(sk, "$Error Could not send file list|");
2028 goto out;
2029 } else if(fd >= 0) {
2030 if((wbuf = icsmbstowcs(argv[1], "UTF-8", NULL)) != NULL)
2031 transfersetpath(peer->transfer, wbuf);
f00d7432 2032 peer->transfer->flags.b.minislot = 1;
d3372da9 2033 }
2034 if(fd < 0)
2035 {
d3372da9 2036 if(!strncmp(argv[1], "TTH/", 4))
2037 {
2038 if((node = findbytth(argv[1] + 4)) == NULL)
2039 {
2040 qstr(sk, "$Error File not in cache|");
2041 goto out;
2042 }
2043 } else {
9a2d6cb8 2044 if((node = resdcpath((argv[1][0] == '/')?(argv[1] + 1):(argv[1]), "UTF-8", '/')) == NULL)
d3372da9 2045 {
2046 qstr(sk, "$Error File not in cache|");
2047 goto out;
2048 }
2049 }
2050 if((fd = opensharecache(node)) < 0)
2051 {
2052 qstrf(sk, "$Error %s|", strerror(errno));
2053 goto out;
2054 }
2055 buf = getfspath(node);
2056 if((wbuf = icsmbstowcs(buf, NULL, NULL)) == NULL)
2057 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
2058 else
2059 transfersetpath(peer->transfer, wbuf);
2060 free(buf);
2061 }
2062 if(!strcmp(argv[0], "file"))
2063 {
2064 for(i = 4; argv[i] != NULL; i++)
2065 {
2066 if(!strcmp(argv[i], "ZL1"))
2067 initcompress(peer, CPRS_ZLIB);
2068 }
2069 if(fstat(fd, &sb) < 0)
2070 {
2071 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
2072 qstr(sk, "$Error|");
2073 goto out;
2074 }
f00d7432 2075 if(sb.st_size < 65536)
2076 peer->transfer->flags.b.minislot = 1;
2077 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
2078 qstr(sk, "$MaxedOut|");
2079 goto out;
2080 }
d3372da9 2081 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
2082 {
2083 qstr(sk, "$Error Offset out of range|");
2084 goto out;
2085 }
2086 if((numbytes < 0) || (start + numbytes > sb.st_size))
2087 numbytes = sb.st_size - start;
2088 lesk = wrapsock(fd);
2089 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2090 putsock(lesk);
2091 fd = -1;
2092 qstr(sk, "$ADCSND");
2093 sendadc(sk, "file");
2094 sendadc(sk, argv[1]);
2095 sendadcf(sk, "%i", start);
2096 sendadcf(sk, "%i", numbytes);
2097 if(peer->compress == CPRS_ZLIB)
2098 sendadc(sk, "ZL1");
2099 qstr(sk, "|");
9a2d6cb8 2100 startul(peer);
d3372da9 2101 } else if(!strcmp(argv[0], "tthl")) {
2102 /*
2103 * XXX: Implement full TTHL support.
2104 *
2105 * In the meantime, this is better than nothing, since it at
2106 * least allows fetching of the TTH root if it isn't already
2107 * known.
2108 */
2109 if(node == NULL)
2110 {
2111 qstr(sk, "$Error no TTHL data for virtual files|");
2112 goto out;
2113 }
2114 qstr(sk, "$ADCSND");
2115 sendadc(sk, "tthl");
2116 sendadc(sk, argv[1]);
2117 sendadc(sk, "0");
2118 sendadc(sk, "24");
2119 qstr(sk, "|");
2120 sockqueue(sk, node->hashtth, 24);
2121 } else {
2122 qstr(sk, "$Error Namespace not implemented|");
2123 goto out;
2124 }
d3372da9 2125
2126 out:
2127 if(fd >= 0)
2128 close(fd);
2129 freeparr(argv);
2130}
2131
9a2d6cb8 2132static void handletthl(struct dcpeer *peer)
2133{
2134 char buf[24];
2135
2136 while(peer->inbufdata >= 24)
2137 {
2138 pushtigertree(&peer->tth, peer->inbuf);
2139 memmove(peer->inbuf, peer->inbuf + 24, peer->inbufdata -= 24);
e52006fe 2140 peer->curread += 24;
9a2d6cb8 2141 }
e52006fe 2142 if(peer->curread >= peer->totalsize)
9a2d6cb8 2143 {
1e9d82b1 2144 if(peer->timeout == NULL)
2145 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
9a2d6cb8 2146 peer->state = PEER_CMD;
2147 synctigertree(&peer->tth);
2148 restigertree(&peer->tth, buf);
2149 transfersethash(peer->transfer, newhash(L"TTH", 24, buf));
2150 requestfile(peer);
2151 }
2152}
2153
2154static void cmd_adcsnd(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2155{
2156 char **argv;
2157 int start, numbytes;
2158
2159 if(peer->transfer == NULL)
2160 {
2161 freedcpeer(peer);
2162 return;
2163 }
2164 if((argv = parseadc(args)) == NULL)
2165 {
2166 freedcpeer(peer);
2167 return;
2168 }
2169 if(parrlen(argv) < 4)
2170 {
2171 freedcpeer(peer);
2172 goto out;
2173 }
2174 start = atoi(argv[2]);
2175 numbytes = atoi(argv[3]);
2176 if(!strcmp(argv[0], "tthl"))
2177 {
2178 if((start != 0) || (numbytes % 24 != 0))
2179 {
2180 /* Weird. Bail out. */
2181 freedcpeer(peer);
2182 goto out;
2183 }
1e9d82b1 2184 if(peer->timeout != NULL)
2185 canceltimer(peer->timeout);
9a2d6cb8 2186 peer->state = PEER_TTHL;
2187 peer->totalsize = numbytes;
2188 peer->curread = 0;
df873cd0 2189 peer->fetchingtthl = 0;
9a2d6cb8 2190 inittigertree(&peer->tth);
2191 handletthl(peer);
2192 } else if(!strcmp(argv[0], "file")) {
2193 if(start != peer->transfer->curpos)
2194 {
2195 freedcpeer(peer);
2196 goto out;
2197 }
2198 if(start + numbytes != peer->transfer->size)
2199 {
2200 transfersetsize(peer->transfer, start + numbytes);
2201 freedcpeer(peer);
2202 goto out;
2203 }
2204 startdl(peer);
e52006fe 2205 if(peer->inbufdata > 0)
2206 {
2207 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2208 peer->inbufdata = 0;
2209 transread(sk, peer);
2210 }
9a2d6cb8 2211 } else {
2212 /* We certainly didn't request this...*/
2213 freedcpeer(peer);
2214 goto out;
2215 }
2216
2217 out:
2218 freeparr(argv);
2219}
2220
2221static void cmd_sending(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2222{
2223 int numbytes;
2224
2225 if(peer->transfer == NULL)
2226 {
2227 freedcpeer(peer);
2228 return;
2229 }
2230 numbytes = atoi(args);
2231 if(peer->transfer->size - peer->transfer->curpos != numbytes)
2232 {
2233 transfersetsize(peer->transfer, peer->transfer->curpos + numbytes);
2234 freedcpeer(peer);
2235 return;
2236 }
2237 startdl(peer);
0d8c93cb 2238 if(peer->inbufdata > 0)
2239 {
2240 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2241 peer->inbufdata = 0;
2242 transread(sk, peer);
2243 }
9a2d6cb8 2244}
2245
d3372da9 2246/*
2247Hub skeleton:
2248static void cmd_(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
2249{
2250 struct dchub *hub;
2251
2252 hub = fn->data;
2253 hubhandleaction(sk, fn, cmd, args);
2254}
2255
2256Peer skeleton:
2257static void cmd_(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2258{
d3372da9 2259}
2260
2261*/
2262
2263static int hubreqconn(struct fnetpeer *peer)
2264{
2265 struct dchub *hub;
2266 char *mbsnick;
2267
2268 if((peer->fn->state != FNN_EST) || (peer->fn->fnet != &dcnet))
2269 {
2270 errno = EINVAL;
2271 return(1);
2272 }
2273 if((hub = peer->fn->data) == NULL)
2274 {
2275 errno = EFAULT;
2276 return(1);
2277 }
1d85f24b 2278 if((mbsnick = icwcstombs(peer->id, hub->charset)) == NULL)
d3372da9 2279 return(1); /* Shouldn't happen, of course, but who knows... */
2280 if(tcpsock != NULL)
2281 {
2282 sendctm(peer->fn->sk, mbsnick);
2283 expectpeer(mbsnick, peer->fn);
2284 } else {
2285 qstrf(peer->fn->sk, "$RevConnectToMe %s %s|", hub->nativenick, mbsnick);
2286 }
2287 free(mbsnick);
2288 return(0);
2289}
2290
2291static int hubsendchat(struct fnetnode *fn, int public, wchar_t *to, wchar_t *string)
2292{
2293 struct dchub *hub;
2294 char *mbsstring, *mbsto;
2295
2296 hub = fn->data;
1d85f24b 2297 if((mbsto = icwcstombs(to, hub->charset)) == NULL)
d3372da9 2298 {
2299 errno = EILSEQ;
2300 return(1);
2301 }
1d85f24b 2302 if((mbsstring = icwcstombs(string, hub->charset)) == NULL)
d3372da9 2303 {
2304 errno = EILSEQ;
2305 return(1);
2306 }
2307 if((strchr(mbsto, '|') != NULL) || (strchr(mbsto, ' ') != NULL))
2308 {
2309 free(mbsto);
2310 free(mbsstring);
2311 errno = ESRCH;
2312 return(1);
2313 }
2314 if(strchr(mbsstring, '|') != NULL)
2315 {
2316 free(mbsto);
2317 free(mbsstring);
2318 errno = EILSEQ;
2319 return(1);
2320 }
2321 if(public)
2322 {
2323 if(*to == L'\0')
2324 {
2325 qstrf(fn->sk, "<%s> %s|", hub->nativenick, mbsstring);
2326 } else {
2327 qstrf(fn->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2328 }
2329 } else {
2330 qstrf(fn->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2331 }
2332 free(mbsto);
2333 free(mbsstring);
2334 return(0);
2335}
2336
2337static void findsizelimit(struct sexpr *sexpr, int *min, int *max)
2338{
2339 int minl, maxl, minr, maxr, retmin, retmax;
2340
2341 switch(sexpr->op)
2342 {
2343 case SOP_AND:
2344 findsizelimit(sexpr->l, &minl, &maxl);
2345 findsizelimit(sexpr->r, &minr, &maxr);
2346 retmin = (minl > minr)?minl:minr;
2347 if((maxl != -1) && (maxr != -1))
2348 retmax = (maxl < maxr)?maxl:maxr;
2349 else if(maxl != -1)
2350 retmax = maxl;
2351 else if(maxr != -1)
2352 retmax = maxr;
2353 else
2354 retmax = -1;
2355 break;
2356 case SOP_OR:
2357 findsizelimit(sexpr->l, &minl, &maxl);
2358 findsizelimit(sexpr->r, &minr, &maxr);
2359 retmin = (minl < minr)?minl:minr;
2360 if((maxl == -1) || (maxr == -1))
2361 retmax = -1;
2362 else
2363 retmax = (maxl > maxr)?maxl:maxr;
2364 break;
2365 case SOP_NOT:
2366 findsizelimit(sexpr->l, &minl, &maxl);
2367 if((minl == 0) && (maxl == -1)) /* Interval is unspecified */
2368 {
2369 retmin = 0;
2370 retmax = -1;
2371 } else if((minl == 0) && (maxl != -1)) {
2372 retmin = maxl + 1;
2373 retmax = -1;
2374 } else if((minl != 0) && (maxl == -1)) {
2375 retmin = 0;
2376 retmax = minl - 1;
2377 } else { /* This would yield two seperate intervals, which DC cannot handle */
2378 retmin = 0;
2379 retmax = -1;
2380 }
2381 case SOP_SIZELT:
2382 retmin = 0;
2383 retmax = sexpr->d.n - 1;
2384 break;
2385 case SOP_SIZEEQ:
2386 retmin = sexpr->d.n;
2387 retmax = sexpr->d.n;
2388 break;
2389 case SOP_SIZEGT:
2390 retmin = sexpr->d.n + 1;
2391 retmax = -1;
2392 break;
2393 default:
2394 retmin = 0;
2395 retmax = -1;
2396 break;
2397 }
2398 if(min != NULL)
2399 *min = retmin;
2400 if(max != NULL)
2401 *max = retmax;
2402}
2403
9d8cf743 2404static struct hash *findsehash(struct sexpr *sexpr)
2405{
2406 struct hash *h1, *h2;
2407
2408 switch(sexpr->op)
2409 {
2410 case SOP_AND:
2411 if((h1 = findsehash(sexpr->l)) != NULL)
2412 return(h1);
2413 if((h1 = findsehash(sexpr->r)) != NULL)
2414 return(h1);
2415 break;
2416 case SOP_OR:
2417 h1 = findsehash(sexpr->l);
2418 h2 = findsehash(sexpr->r);
2419 if(hashcmp(h1, h2))
2420 return(h1);
2421 break;
2422 case SOP_HASHIS:
2423 if(!wcscmp(sexpr->d.hash->algo, L"TTH"))
2424 return(sexpr->d.hash);
2425 default:
2426 break;
2427 }
2428 return(NULL);
2429}
2430
d3372da9 2431static int hubsearch(struct fnetnode *fn, struct search *srch, struct srchfnnlist *ln)
2432{
2433 struct dchub *hub;
2434 struct wcslist *list, *cur;
2435 char *sstr, *buf, *p;
2436 size_t sstrsize, sstrdata;
2437 struct sockaddr *name;
2438 socklen_t namelen;
2439 int minsize, maxsize;
9d8cf743 2440 struct hash *hash;
d3372da9 2441
2442 hub = fn->data;
2443 if((fn->state != FNN_EST) || (fn->sk == NULL) || (fn->sk->state != SOCK_EST))
2444 return(1);
2445 list = findsexprstrs(srch->sexpr);
2446 findsizelimit(srch->sexpr, &minsize, &maxsize);
9d8cf743 2447 hash = findsehash(srch->sexpr);
d3372da9 2448 if((minsize != 0) && (maxsize != -1))
2449 {
2450 /* Choose either minsize or maxsize by trying to determine
2451 * which choice will be most restrictive. The result can be
2452 * approximative at best anyway, so don't try too hard... */
2453 if((50000000 - maxsize) > (minsize - 50000000))
2454 minsize = 0;
2455 else
2456 maxsize = -1;
2457 }
d3372da9 2458 sstr = NULL;
2459 sstrsize = sstrdata = 0;
9d8cf743 2460 if((hash != NULL) && (hash->len == 24))
d3372da9 2461 {
9d8cf743 2462 /* Prioritize hash searches above all else */
2463 bufcat(sstr, "F?T?0?9?TTH:", 12);
2464 buf = base32encode(hash->buf, hash->len);
2465
2466 bufcat(sstr, buf, 39);
2467 free(buf);
2468 } else {
2469 if(minsize != 0)
d3372da9 2470 {
9d8cf743 2471 sizebuf2(sstr, sstrdata + 32, 1);
fe42d689 2472 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?F?%i?1?", minsize);
9d8cf743 2473 } else if(maxsize != -1) {
2474 sizebuf2(sstr, sstrdata + 32, 1);
fe42d689 2475 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?T?%i?1?", maxsize);
9d8cf743 2476 } else {
2477 bufcat(sstr, "F?F?0?1?", 8);
2478 }
2479 if(list != NULL)
2480 {
2481 for(cur = list; cur != NULL; cur = cur->next)
d3372da9 2482 {
1d85f24b 2483 /* Use DCCHARSET in $Get paths until further researched... */
9d8cf743 2484 if((buf = icwcstombs(cur->str, DCCHARSET)) == NULL)
2485 {
2486 /* Can't find anything anyway if the search expression
2487 * requires characters outside DC's charset. There's
2488 * nothing technically wrong with the search itself,
2489 * however, so return success. This should be
2490 * considered as an optimization. */
2491 freesl(&list);
2492 if(sstr != NULL)
2493 free(sstr);
2494 return(0);
2495 }
2496 if(cur != list)
2497 addtobuf(sstr, '$');
2498 /*
2499 * It probably doesn't hurt if buf contains any extra
2500 * dollar signs - it will just result in extra search
2501 * terms, and the extraneous results will be filtered by
2502 * the search layer anyway. It hurts if it contains any
2503 * pipes, though, so let's sell them for money.
2504 */
2505 for(p = buf; *p; p++)
2506 {
2507 if(*p == '|')
2508 *p = '$';
2509 }
2510 bufcat(sstr, buf, strlen(buf));
2511 free(buf);
d3372da9 2512 }
9d8cf743 2513 } else {
2514 /* Will match all files... :-/ */
2515 addtobuf(sstr, '.');
d3372da9 2516 }
d3372da9 2517 }
2518 addtobuf(sstr, 0);
2519 if(tcpsock != NULL)
2520 {
2521 if(sockgetremotename(udpsock, &name, &namelen) < 0)
2522 {
2523 flog(LOG_WARNING, "cannot get address of UDP socket");
2524 } else {
9d8cf743 2525 qstrf(fn->sk, "$Search %s %s|", formataddress(name, namelen), sstr);
d3372da9 2526 free(name);
2527 }
2528 } else {
9d8cf743 2529 qstrf(fn->sk, "$Search Hub:%s %s|", hub->nativenick, sstr);
d3372da9 2530 }
2531 free(sstr);
2532 freesl(&list);
2533 fn->lastsrch = time(NULL);
2534 return(0);
2535}
2536
2537#undef skipcmd
2538#undef qstr
2539#undef qstrf
2540
2541#define cc(c) ((void (*)(struct socket *, void *, char *, char *))(c))
2542struct command hubcmds[] =
2543{
2544 {"$Lock", cc(cmd_lock)},
2545 {"$HubName", cc(cmd_hubname)},
2546 {"$Hello", cc(cmd_hello)},
2547 {"$Quit", cc(cmd_quit)},
2548 {"$NickList", cc(cmd_nicklist)},
2549 {"$OpList", cc(cmd_oplist)},
2550 {"$MyINFO", cc(cmd_myinfo)},
2551 {"$ForceMove", cc(cmd_forcemove)},
2552 {"$Search", cc(cmd_search)},
2553 {"$MultiSearch", cc(cmd_search)},
2554 {"$ConnectToMe", cc(cmd_connecttome)},
2555 {"$RevConnectToMe", cc(cmd_revconnecttome)},
2556 {"$GetNetInfo", cc(cmd_getnetinfo)},
2557 {"$To:", cc(cmd_to)},
2558 {"$SR", cc(cmd_sr)},
2559 {"$UserCommand", cc(cmd_usercommand)},
48509089 2560 {"$GetPass", cc(cmd_getpass)},
c9b3ad74 2561 {"$LogedIn", cc(cmd_logedin)}, /* sic */
d3372da9 2562 {NULL, NULL}
2563};
2564
2565struct command peercmds[] =
2566{
2567 {"$MyNick", cc(cmd_mynick)},
2568 {"$Lock", cc(cmd_peerlock)},
2569 {"$Direction", cc(cmd_direction)},
2570 {"$Key", cc(cmd_key)},
2571 {"$FileLength", cc(cmd_filelength)},
2572 {"$Error", cc(cmd_error)},
2573 {"$MaxedOut", cc(cmd_maxedout)},
2574 {"$Get", cc(cmd_get)},
2575 {"$Send", cc(cmd_send)},
2576 {"$Supports", cc(cmd_supports)},
2577 {"$GetBlock", cc(cmd_getblock)},
2578 {"$UGetBlock", cc(cmd_getblock)},
2579 {"$GetZBlock", cc(cmd_getblock)},
2580 {"$UGetZBlock", cc(cmd_getblock)},
2581 {"$ADCGET", cc(cmd_adcget)},
9a2d6cb8 2582 {"$ADCSND", cc(cmd_adcsnd), 1},
2583 {"$Sending", cc(cmd_sending), 1},
d3372da9 2584 {NULL, NULL}
2585};
2586#undef cc
2587
2588static void dctransdetach(struct transfer *transfer, struct dcpeer *peer)
2589{
2590 CBUNREG(transfer, trans_filterout, peer);
2591 if(peer->freeing)
2592 return;
2593 peer->transfer = NULL;
2594 freedcpeer(peer);
2595}
2596
2597static void dctransgotdata(struct transfer *transfer, struct dcpeer *peer)
2598{
2599 int ret;
2600 void *buf;
c7185019 2601 unsigned char outbuf[1024];
d3372da9 2602 z_stream *cstr;
2603 size_t bufsize;
2604
2605 if((peer->state == PEER_TRNS) || (peer->state == PEER_SYNC))
2606 {
2607 if(sockqueuesize(peer->sk) < 65536)
2608 {
2609 if((buf = transfergetdata(transfer, &bufsize)) != NULL)
2610 {
2611 if(peer->compress == CPRS_NONE)
2612 {
2613 sockqueue(peer->sk, buf, bufsize);
2614 } else if(peer->compress == CPRS_ZLIB) {
2615 cstr = peer->cprsdata;
2616 cstr->next_in = buf;
2617 cstr->avail_in = bufsize;
2618 while(cstr->avail_in > 0)
2619 {
2620 cstr->next_out = outbuf;
2621 cstr->avail_out = sizeof(outbuf);
2622 if((ret = deflate(cstr, 0)) != Z_OK)
2623 {
2624 flog(LOG_WARNING, "bug? deflate() did not return Z_OK (but rather %i)", ret);
2625 freedcpeer(peer);
2626 return;
2627 }
2628 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2629 }
2630 }
2631 free(buf);
2632 }
2633 if(peer->state == PEER_SYNC)
2634 {
2635 if(peer->compress == CPRS_ZLIB)
2636 {
2637 cstr = peer->cprsdata;
2638 cstr->next_in = NULL;
2639 cstr->avail_in = 0;
2640 do
2641 {
2642 cstr->next_out = outbuf;
2643 cstr->avail_out = sizeof(outbuf);
2644 ret = deflate(cstr, Z_FINISH);
2645 if((ret != Z_OK) && (ret != Z_STREAM_END))
2646 {
2647 flog(LOG_WARNING, "bug? deflate(Z_FINISH) did not return Z_OK (but rather %i)", ret);
2648 freedcpeer(peer);
2649 return;
2650 }
2651 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2652 } while(ret != Z_STREAM_END);
2653 }
2654 if(peer->ptclose)
2655 {
2656 freedcpeer(peer);
2657 } else {
1e9d82b1 2658 if(peer->timeout == NULL)
2659 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 2660 peer->state = PEER_CMD;
2661 endcompress(peer);
2662 transfersetstate(transfer, TRNS_HS);
2663 socksettos(peer->sk, confgetint("fnet", "fnptos"));
bfc261fe 2664 transfer->flags.b.minislot = 0;
d3372da9 2665 peer->sk->writecb = NULL;
2666 }
2667 }
2668 }
2669 }
2670}
2671
2672static void dctransendofdata(struct transfer *transfer, struct dcpeer *peer)
2673{
2674 peer->state = PEER_SYNC;
2675 dctransgotdata(transfer, peer);
2676}
2677
2678static void dcwantdata(struct transfer *transfer, struct dcpeer *peer)
2679{
2680 if(transferdatasize(transfer) < 65536)
2681 peer->sk->ignread = 0;
2682}
2683
2684static void transread(struct socket *sk, struct dcpeer *peer)
2685{
2686 void *buf;
2687 size_t bufsize;
2688 struct transfer *transfer;
2689
2690 if((buf = sockgetinbuf(sk, &bufsize)) == NULL)
2691 return;
2692 if(peer->transfer == NULL)
2693 {
2694 free(buf);
2695 freedcpeer(peer);
2696 return;
2697 }
2698 transferputdata(peer->transfer, buf, bufsize);
2699 free(buf);
2700 if(peer->transfer->curpos >= peer->transfer->size)
2701 {
2702 transfer = peer->transfer;
2703 transferdetach(transfer);
2704 transferendofdata(transfer);
2705 return;
2706 }
2707 if(transferdatasize(peer->transfer) > 65535)
2708 sk->ignread = 1;
2709}
2710
2711static void transerr(struct socket *sk, int err, struct dcpeer *peer)
2712{
2713 struct transfer *transfer;
2714
2715 if((transfer = peer->transfer) == NULL)
2716 {
2717 freedcpeer(peer);
2718 return;
2719 }
2720 transferdetach(transfer);
2721 transferendofdata(transfer);
2722}
2723
2724static void transwrite(struct socket *sk, struct dcpeer *peer)
2725{
2726 if((peer->state != PEER_TRNS) && (peer->state != PEER_SYNC))
2727 return;
2728 if(peer->transfer == NULL)
2729 {
2730 freedcpeer(peer);
2731 return;
2732 }
2733 dctransgotdata(peer->transfer, peer);
2734}
2735
2736static void udpread(struct socket *sk, void *data)
2737{
d86b7a9f 2738 char *buf, *p, *p2, *hashbuf;
2739 size_t buflen, hashlen;
d3372da9 2740 char *nick, *filename, *hubname;
99a28d47 2741 struct sockaddr_in hubaddr;
d3372da9 2742 int size, slots;
2743 struct fnetnode *fn, *myfn;
2744 struct dchub *hub;
2745 struct srchres *sr;
2746 wchar_t *wnick, *wfile;
d86b7a9f 2747 struct hash *hash;
d3372da9 2748
2749 if((buf = sockgetinbuf(sk, &buflen)) == NULL)
2750 return;
2751 buf = srealloc(buf, buflen + 1);
2752 buf[buflen] = 0;
2753 if(!strncmp(buf, "$SR ", 4))
2754 {
2755 p = buf + 4;
2756 nick = p;
2757 if((p2 = strchr(p, ' ')) == NULL)
2758 {
2759 free(buf);
2760 return;
2761 }
2762 *p2 = 0;
2763 p = p2 + 1;
2764 filename = p;
2765 if((p2 = strchr(p, 5)) == NULL)
2766 {
2767 free(buf);
2768 return;
2769 }
2770 *p2 = 0;
2771 p = p2 + 1;
2772 if((p2 = strchr(p, ' ')) == NULL)
2773 {
2774 free(buf);
2775 return;
2776 }
2777 *p2 = 0;
2778 size = atoi(p);
2779 p = p2 + 1;
2780 if((p2 = strchr(p, '/')) == NULL)
2781 {
2782 free(buf);
2783 return;
2784 }
2785 *p2 = 0;
2786 slots = atoi(p);
2787 p = p2 + 1;
2788 if((p2 = strchr(p, 5)) == NULL)
2789 {
2790 free(buf);
2791 return;
2792 }
2793 p = p2 + 1;
2794 hubname = p;
2795 if((p2 = strstr(p, " (")) == NULL)
2796 {
2797 free(buf);
2798 return;
2799 }
2800 *p2 = 0;
99a28d47 2801 p = p2 + 2;
2802 if((p2 = strchr(p, ':')) == NULL)
2803 {
2804 free(buf);
2805 return;
2806 }
870bf4ad 2807 *(p2++) = 0;
99a28d47 2808 hubaddr.sin_family = AF_INET;
2809 if(!inet_aton(p, &hubaddr.sin_addr))
2810 {
2811 free(buf);
2812 return;
2813 }
2814 p = p2;
2815 if((p2 = strchr(p, ')')) == NULL)
2816 {
2817 free(buf);
2818 return;
2819 }
2820 *p2 = 0;
2821 hubaddr.sin_port = htons(atoi(p));
1d85f24b 2822 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 2823 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
2824 {
d3372da9 2825 free(buf);
2826 return;
2827 }
2828 myfn = NULL;
d86b7a9f 2829 hash = NULL;
2830 if(!strncmp(hubname, "TTH:", 4))
d3372da9 2831 {
d86b7a9f 2832 if((hashbuf = base32decode(hubname + 4, &hashlen)) != NULL)
2833 {
2834 if(hashlen == 24)
2835 hash = newhash(L"TTH", 24, hashbuf);
2836 free(hashbuf);
2837 }
2838 } else {
2839 for(fn = fnetnodes; fn != NULL; fn = fn->next)
d3372da9 2840 {
d86b7a9f 2841 if((fn->fnet == &dcnet) && ((hub = fn->data) != NULL))
d3372da9 2842 {
d86b7a9f 2843 if((hub->nativename != NULL) && !strcmp(hub->nativename, hubname))
d3372da9 2844 {
d86b7a9f 2845 if(myfn == NULL)
2846 {
2847 myfn = fn;
2848 } else {
2849 myfn = NULL;
2850 break;
2851 }
d3372da9 2852 }
2853 }
2854 }
2855 }
99a28d47 2856 if(myfn == NULL)
2857 {
2858 for(fn = fnetnodes; fn != NULL; fn = fn->next)
2859 {
39cc1b93 2860 if((fn->fnet == &dcnet) && (fn->sk != NULL) && addreq(fn->sk->remote, (struct sockaddr *)&hubaddr))
99a28d47 2861 {
2862 myfn = fn;
2863 break;
2864 }
2865 }
2866 }
1d85f24b 2867 hub = NULL;
2868 if(myfn != NULL)
2869 hub = myfn->data;
2870 if((wnick = icmbstowcs(nick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
2871 {
2872 free(buf);
2873 return;
2874 }
d3372da9 2875 sr = newsrchres(&dcnet, wfile, wnick);
2876 if(sr->peernick != NULL)
2877 free(sr->peernick);
2878 sr->peernick = swcsdup(wnick);
2879 sr->size = size;
2880 sr->slots = slots;
2881 free(wfile);
2882 free(wnick);
2883 if(myfn != NULL)
2884 getfnetnode(sr->fn = myfn);
d86b7a9f 2885 if(hash != NULL)
2886 sr->hash = hash;
d3372da9 2887 submitsrchres(sr);
2888 freesrchres(sr);
2889 }
2890 free(buf);
2891}
2892
2893static void hubread(struct socket *sk, struct fnetnode *fn)
2894{
2895 struct dchub *hub;
2896 char *newbuf;
2897 size_t datalen;
2898 char *p;
2899
2900 hub = (struct dchub *)fn->data;
2901 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
2902 return;
2903 if(hub->inbufdata > 500000) /* Discard possible malicious data */
2904 hub->inbufdata = 0;
2905 sizebuf2(hub->inbuf, hub->inbufdata + datalen, 1);
2906 memcpy(hub->inbuf + hub->inbufdata, newbuf, datalen);
2907 free(newbuf);
2908 p = hub->inbuf + hub->inbufdata;
2909 hub->inbufdata += datalen;
2910 while((datalen > 0) && ((p = memchr(p, '|', datalen)) != NULL))
2911 {
2912 *(p++) = 0;
2913 newqcmd(&hub->queue, hub->inbuf);
2914 memmove(hub->inbuf, p, hub->inbufdata -= p - hub->inbuf);
2915 datalen = hub->inbufdata;
2916 p = hub->inbuf;
2917 }
2918}
2919
2920static void huberr(struct socket *sk, int err, struct fnetnode *fn)
2921{
2922 killfnetnode(fn);
2923}
2924
2925static int hubsetnick(struct fnetnode *fn, wchar_t *newnick)
2926{
2927 struct dchub *hub;
2928 char *buf;
2929
2930 hub = fn->data;
1d85f24b 2931 if((buf = icwcstombs(newnick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
d3372da9 2932 return(1);
2933 if((strchr(buf, ' ') != NULL) || (strchr(buf, '|') != NULL) || (strchr(buf, '$') != NULL))
2934 {
2935 free(buf);
2936 return(1);
2937 }
2938 if(hub == NULL) /* Not yet connected */
2939 {
2940 free(buf);
2941 return(0);
2942 }
2943 if(hub->nativenick != NULL)
2944 free(hub->nativenick);
2945 hub->nativenick = buf;
2946 return(0);
2947}
2948
2949static struct dchub *newdchub(struct fnetnode *fn)
2950{
2951 struct dchub *new;
1c4b02cd 2952 wchar_t *emu;
1d85f24b 2953 wchar_t *wcharset;
2954 char *charset;
d3372da9 2955
2956 new = smalloc(sizeof(*new));
2957 memset(new, 0, sizeof(*new));
2958 fn->data = new;
1c4b02cd 2959 if(confgetint("dc", "dcppemu"))
2960 new->dcppemu = 1;
2961 if((emu = wpfind(fn->args, L"dcppemu")) != NULL)
2962 {
2963 if(*emu == L'y')
2964 new->dcppemu = 1;
2965 if(*emu == L'n')
2966 new->dcppemu = 0;
2967 }
1d85f24b 2968 charset = NULL;
2969 if((wcharset = wpfind(fn->args, L"charset")) != NULL)
2970 {
2971 if((charset = icwcstombs(wcharset, "US-ASCII")) != NULL)
2972 {
2973 if(!havecharset(charset))
2974 {
2975 free(charset);
2976 charset = NULL;
2977 }
2978 }
2979 }
2980 if(charset != NULL)
2981 new->charset = charset;
2982 else
2983 new->charset = sstrdup(DCCHARSET);
d3372da9 2984 if(hubsetnick(fn, fn->mynick))
2985 fnetsetnick(fn, L"DoldaConnectUser-IN");
2986 /* IN as in Invalid Nick */
2987 return(new);
2988}
2989
2990static struct dcpeer *newdcpeer(struct socket *sk)
2991{
2992 struct dcpeer *new;
2993
2994 new = smalloc(sizeof(*new));
2995 memset(new, 0, sizeof(*new));
2996 new->transfer = NULL;
2997 getsock(sk);
2998 new->sk = sk;
1c4b02cd 2999 if(confgetint("dc", "dcppemu"))
3000 new->dcppemu = 1;
d3372da9 3001 new->next = peers;
3002 new->prev = NULL;
3003 if(peers != NULL)
3004 peers->prev = new;
3005 peers = new;
3006 numdcpeers++;
3007 return(new);
3008}
3009
3010static void freedcpeer(struct dcpeer *peer)
3011{
3012 int i;
3013 struct qcommand *qcmd;
3014
3015 peer->freeing = 1;
3016 if(peers == peer)
3017 peers = peer->next;
3018 if(peer->next != NULL)
3019 peer->next->prev = peer->prev;
3020 if(peer->prev != NULL)
3021 peer->prev->next = peer->next;
3022 if(peer->transfer != NULL)
3023 {
3024 if(peer->transfer->dir == TRNSD_UP)
3025 peer->transfer->close = 1;
3026 if(peer->transfer->dir == TRNSD_DOWN)
3027 resettransfer(peer->transfer);
3028 transferdetach(peer->transfer);
3029 }
1e9d82b1 3030 if(peer->timeout != NULL)
3031 canceltimer(peer->timeout);
d3372da9 3032 if(peer->sk->data == peer)
3033 peer->sk->data = NULL;
3034 peer->sk->readcb = NULL;
3035 peer->sk->writecb = NULL;
3036 peer->sk->errcb = NULL;
3037 putsock(peer->sk);
3038 endcompress(peer);
3039 if(peer->supports != NULL)
3040 {
3041 for(i = 0; peer->supports[i] != NULL; i++)
3042 free(peer->supports[i]);
3043 free(peer->supports);
3044 }
d3372da9 3045 if(peer->inbuf != NULL)
3046 free(peer->inbuf);
3047 if(peer->key != NULL)
3048 free(peer->key);
3049 if(peer->wcsname != NULL)
3050 free(peer->wcsname);
3051 if(peer->nativename != NULL)
3052 free(peer->nativename);
1d85f24b 3053 if(peer->charset != NULL)
3054 free(peer->charset);
d3372da9 3055 if(peer->fn != NULL)
3056 putfnetnode(peer->fn);
3057 while((qcmd = ulqcmd(&peer->queue)) != NULL)
3058 freeqcmd(qcmd);
3059 free(peer);
3060 numdcpeers--;
3061}
3062
3063static void hubconnect(struct fnetnode *fn)
3064{
3065 fn->sk->readcb = (void (*)(struct socket *, void *))hubread;
3066 fn->sk->errcb = (void (*)(struct socket *, int, void *))huberr;
3067 getfnetnode(fn);
3068 fn->data = newdchub(fn);
3069 fn->sk->data = fn;
3070 return;
3071}
3072
3073static void hubdestroy(struct fnetnode *fn)
3074{
3075 struct dchub *hub;
3076 struct qcommand *qcmd;
3077
3078 hub = (struct dchub *)fn->data;
9d131372 3079 if((fn->sk != NULL) && (fn->sk->data == fn))
d3372da9 3080 {
9d131372 3081 fn->sk->data = NULL;
3082 putfnetnode(fn);
d3372da9 3083 }
3084 if(hub == NULL)
3085 return;
3086 while((qcmd = ulqcmd(&hub->queue)) != NULL)
3087 freeqcmd(qcmd);
3088 if(hub->nativename != NULL)
3089 free(hub->nativename);
3090 if(hub->nativenick != NULL)
3091 free(hub->nativenick);
1d85f24b 3092 if(hub->charset != NULL)
3093 free(hub->charset);
d3372da9 3094 if(hub->inbuf != NULL)
3095 free(hub->inbuf);
3096 free(hub);
3097}
3098
3099static wchar_t *dcbasename(wchar_t *filename)
3100{
3101 wchar_t *ret;
3102
3103 if((ret = wcsrchr(filename, L'\\')) != NULL)
3104 return(ret + 1);
3105 return(filename);
3106}
3107
3108static struct transferiface dctransfer =
3109{
3110 .detach = (void (*)(struct transfer *, void *))dctransdetach,
3111 .gotdata = (void (*)(struct transfer *, void *))dctransgotdata,
3112 .endofdata = (void (*)(struct transfer *, void *))dctransendofdata,
3113 .wantdata = (void (*)(struct transfer *, void *))dcwantdata
3114};
3115
3116static struct fnet dcnet =
3117{
3118 .name = L"dc",
3119 .connect = hubconnect,
3120 .destroy = hubdestroy,
3121 .setnick = hubsetnick,
3122 .reqconn = hubreqconn,
3123 .sendchat = hubsendchat,
3124 .search = hubsearch,
3125 .filebasename = dcbasename
3126};
3127
3128static void peerread(struct socket *sk, struct dcpeer *peer)
3129{
3130 char *newbuf, *p;
3131 size_t datalen;
9a2d6cb8 3132 struct command *cmd;
d3372da9 3133
3134 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
3135 return;
3136 sizebuf2(peer->inbuf, peer->inbufdata + datalen, 1);
3137 memcpy(peer->inbuf + peer->inbufdata, newbuf, datalen);
3138 free(newbuf);
d3372da9 3139 peer->inbufdata += datalen;
9a2d6cb8 3140 if(peer->state == PEER_CMD)
d3372da9 3141 {
d3372da9 3142 p = peer->inbuf;
9a2d6cb8 3143 while((peer->inbufdata > 0) && (p = memchr(peer->inbuf, '|', peer->inbufdata)) != NULL)
3144 {
3145 *(p++) = 0;
3146 newqcmd(&peer->queue, peer->inbuf);
3147 for(cmd = peercmds; cmd->handler != NULL; cmd++)
3148 {
5eee9d66 3149 if(!memcmp(peer->inbuf, cmd->name, strlen(cmd->name)) && ((peer->inbuf[strlen(cmd->name)] == ' ') || (peer->inbuf[strlen(cmd->name)] == '|')))
9a2d6cb8 3150 break;
3151 }
5eee9d66 3152 memmove(peer->inbuf, p, peer->inbufdata -= p - peer->inbuf);
9a2d6cb8 3153 if(cmd->stop)
3154 {
3155 peer->state = PEER_STOP;
3156 break;
3157 }
9a2d6cb8 3158 }
3159 } else if(peer->state == PEER_TTHL) {
3160 handletthl(peer);
d3372da9 3161 }
3162}
3163
3164static void peererror(struct socket *sk, int err, struct dcpeer *peer)
3165{
3166 freedcpeer(peer);
3167}
3168
3169static void peerconnect(struct socket *sk, int err, struct fnetnode *fn)
3170{
3171 struct dcpeer *peer;
1c4b02cd 3172 struct dchub *hub;
d3372da9 3173
3174 if(err != 0)
3175 {
3176 putfnetnode(fn);
ff625695 3177 putsock(sk);
d3372da9 3178 return;
3179 }
1c4b02cd 3180 hub = fn->data;
d3372da9 3181 peer = newdcpeer(sk);
3182 peer->fn = fn;
3183 peer->accepted = 0;
1c4b02cd 3184 peer->dcppemu = hub->dcppemu;
d3372da9 3185 sk->readcb = (void (*)(struct socket *, void *))peerread;
3186 sk->errcb = (void (*)(struct socket *, int, void *))peererror;
3187 sk->data = peer;
3188 socksettos(sk, confgetint("fnet", "fnptos"));
d3372da9 3189 putsock(sk);
1e9d82b1 3190 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
9a2d6cb8 3191 sendmynick(peer);
3192 sendpeerlock(peer);
d3372da9 3193}
3194
3195static void peeraccept(struct socket *sk, struct socket *newsk, void *data)
3196{
3197 struct dcpeer *peer;
3198
3199 peer = newdcpeer(newsk);
3200 peer->accepted = 1;
3201 newsk->readcb = (void (*)(struct socket *, void *))peerread;
3202 newsk->errcb = (void (*)(struct socket *, int, void *))peererror;
3203 newsk->data = peer;
3204 socksettos(newsk, confgetint("fnet", "fnptos"));
1e9d82b1 3205 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 3206}
3207
3208static void updatehmlist(void)
3209{
3210 int i, lev, ic, ret;
3211 struct sharecache *node;
3212 char *buf, *buf2, numbuf[32];
3213 size_t bufsize, bufdata;
3214 int fd, ibuf;
3215
3216 bufdata = 0;
3217 buf = smalloc(bufsize = 65536);
3218 node = shareroot->child;
3219 lev = 0;
3220 while(1)
3221 {
3222 ic = 0;
1d85f24b 3223 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 3224 if((buf2 = icwcstombs(node->name, DCCHARSET)) != NULL)
3225 {
3226 for(i = 0; i < lev; i++)
3227 addtobuf(buf, 9);
3228 bufcat(buf, buf2, strlen(buf2));
3229 free(buf2);
3230 if(node->f.b.type == FILE_REG)
3231 {
3232 addtobuf(buf, '|');
3233 sprintf(numbuf, "%i", node->size);
3234 bufcat(buf, numbuf, strlen(numbuf));
3235 }
3236 addtobuf(buf, 13);
3237 addtobuf(buf, 10);
3238 } else {
3239 ic = 1;
3240 }
3241 if((node->child != NULL) && !ic)
3242 {
3243 lev++;
3244 node = node->child;
3245 } else if(node->next != NULL) {
3246 node = node->next;
3247 } else {
3248 while(node->next == NULL)
3249 {
3250 lev--;
3251 node = node->parent;
3252 if(node == shareroot)
3253 break;
3254 }
3255 if(node == shareroot)
3256 break;
3257 node = node->next;
3258 }
3259 }
3260 if(hmlistname != NULL)
3261 {
3262 unlink(hmlistname);
3263 free(hmlistname);
3264 }
3265 hmlistname = sstrdup("/tmp/dc-filelist-hm-XXXXXX");
3266 if((fd = mkstemp(hmlistname)) < 0)
3267 {
3268 flog(LOG_WARNING, "could not create HM file list tempfile: %s", strerror(errno));
3269 free(hmlistname);
3270 hmlistname = NULL;
3271 } else {
3272 /*
3273 * I do not want to implement a good Huffman encoder, and it's not
3274 * like Huffman encoding actually yields any impressive results
3275 * for DC file lists anyway, so I'll just output a bogus
3276 * tree. Implement a good encoder if you want to.
3277 */
3278 write(fd, "HE3\r\0", 5);
3279 write(fd, &bufdata, 4);
3280 ibuf = 256;
3281 write(fd, &ibuf, 2);
3282 ibuf = 8;
3283 for(i = 0; i < 256; i++)
3284 {
3285 write(fd, &i, 1);
3286 write(fd, &ibuf, 1);
3287 }
3288 for(i = 0; i < 256; i++)
3289 write(fd, &i, 1);
3290 for(buf2 = buf; bufdata > 0;)
3291 {
3292 if((ret = write(fd, buf2, bufdata)) < 0)
3293 {
3294 flog(LOG_WARNING, "could not write file list: %s", strerror(errno));
3295 break;
3296 }
3297 bufdata -= ret;
3298 buf2 += ret;
3299 }
3300 close(fd);
3301 }
3302 free(buf);
3303}
3304
3305static struct xmlent
3306{
3307 wchar_t c;
3308 wchar_t *ent;
3309} entities[] = {
3310 {L'&', L"&amp;"},
3311 {L'\"', L"&#34;"},
3312/* {L'\'', L"&quot;"}, Emulate DC++ escaping by omitting this. */
3313 {L'\0', NULL}
3314};
3315
3316static wchar_t *escapexml(wchar_t *src)
3317{
3318 static wchar_t *buf = NULL;;
3319 int ret, c;
3320 wchar_t nbuf[32];
3321 size_t bufsize, bufdata;
3322 struct xmlent *ent;
3323
3324 if(buf != NULL)
3325 free(buf);
3326 buf = NULL;
3327 bufsize = bufdata = 0;
3328 for(; *src != L'\0'; src++)
3329 {
3330 c = wctob(*src);
3331 if((c > 0) && (c < 32))
3332 {
3333 bufcat(buf, L"&#", 2);
3334 ret = swprintf(nbuf, (sizeof(nbuf) / sizeof(*nbuf)), L"%i", c);
3335 bufcat(buf, nbuf, ret);
3336 addtobuf(buf, L';');
3337 } else {
3338 for(ent = entities; ent->ent != NULL; ent++)
3339 {
3340 if(ent->c == *src)
3341 {
3342 bufcat(buf, ent->ent, wcslen(ent->ent));
3343 break;
3344 }
3345 }
3346 if(ent->ent == NULL)
3347 addtobuf(buf, *src);
3348 }
3349 }
3350 addtobuf(buf, L'\0');
3351 return(buf);
3352}
3353
3354static void updatexmllist(void)
3355{
3356 int i, fd, lev;
3357 FILE *fs;
3358 char cidbuf[14], *namebuf;
3359 char *hashbuf;
3360 struct sharecache *node;
3361
3362 if(xmllistname != NULL)
3363 {
3364 unlink(xmllistname);
3365 free(xmllistname);
3366 }
3367 xmllistname = sstrdup("/tmp/dc-filelist-dcxml-XXXXXX");
3368 if((fd = mkstemp(xmllistname)) < 0)
3369 {
3370 flog(LOG_WARNING, "could not create XML file list tempfile: %s", strerror(errno));
3371 free(xmllistname);
3372 xmllistname = NULL;
3373 return;
3374 }
3375 if((fs = fdopen(fd, "w")) == NULL)
3376 {
3377 flog(LOG_WARNING, "could not fdopen XML list fd %i: %s", fd, strerror(errno));
3378 unlink(xmllistname);
3379 free(xmllistname);
3380 xmllistname = NULL;
3381 close(fd);
3382 return;
3383 }
3384 fprintf(fs, "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?>\r\n");
3385 for(i = 0; i < sizeof(cidbuf) - 1; i++)
3386 cidbuf[i] = (rand() % ('Z' - 'A' + 1)) + 'A';
3387 cidbuf[i] = 0;
1c4b02cd 3388 if(confgetint("dc", "dcppemu"))
3389 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"DC++ 0.674\">\r\n", cidbuf);
3390 else
3391 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"%s\">\r\n", cidbuf, "DoldaConnect" VERSION);
d3372da9 3392
3393 node = shareroot->child;
3394 lev = 0;
3395 while(1)
3396 {
3397 if((namebuf = icswcstombs(escapexml(node->name), "UTF-8", NULL)) != NULL)
3398 {
3399 for(i = 0; i < lev; i++)
3400 fputc('\t', fs);
3401 if(node->child != NULL)
3402 {
3403 fprintf(fs, "<Directory Name=\"%s\">\r\n", namebuf);
3404 node = node->child;
3405 lev++;
3406 continue;
3407 } else {
3408 fprintf(fs, "<File Name=\"%s\" Size=\"%i\"", namebuf, node->size);
3409 if(node->f.b.hastth)
3410 {
3411 hashbuf = base32encode(node->hashtth, 24);
3412 fprintf(fs, " TTH=\"%.39s\"", hashbuf);
3413 free(hashbuf);
3414 }
3415 fprintf(fs, "/>\r\n");
3416 }
3417 while(node->next == NULL)
3418 {
3419 node = node->parent;
3420 if(node == shareroot)
3421 {
3422 break;
3423 } else {
3424 lev--;
3425 for(i = 0; i < lev; i++)
3426 fputc('\t', fs);
3427 fprintf(fs, "</Directory>\r\n");
3428 }
3429 }
3430 if(node == shareroot)
3431 break;
3432 node = node->next;
3433 }
3434 }
3435
1c4b02cd 3436 if(confgetint("dc", "dcppemu"))
3437 fprintf(fs, "</FileListing>");
3438 else
3439 fprintf(fs, "</FileListing>\r\n");
d3372da9 3440 fclose(fs);
3441}
3442
3443static void updatexmlbz2list(void)
3444{
3445 int err, fd;
3446 FILE *in;
3447 FILE *real;
3448 BZFILE *out;
3449 char buf[1024];
3450 size_t bufdata;
3451
3452 if(xmllistname == NULL)
3453 return;
3454 if((in = fopen(xmllistname, "r")) == NULL)
3455 {
3456 flog(LOG_WARNING, "could not open XML file list for bzipping: %s", strerror(errno));
3457 return;
3458 }
3459 if(xmlbz2listname != NULL)
3460 {
3461 unlink(xmlbz2listname);
3462 free(xmlbz2listname);
3463 }
3464 xmlbz2listname = sstrdup("/tmp/dc-filelist-dcxmlbz2-XXXXXX");
3465 if((fd = mkstemp(xmlbz2listname)) < 0)
3466 {
3467 flog(LOG_WARNING, "could not create bzipped XML file list tempfile: %s", strerror(errno));
3468 free(xmlbz2listname);
3469 xmlbz2listname = NULL;
3470 fclose(in);
3471 return;
3472 }
3473 if((real = fdopen(fd, "w")) == NULL)
3474 {
3475 flog(LOG_WARNING, "could not fdopen bzipped XML list fd %i: %s", fd, strerror(errno));
3476 close(fd);
3477 unlink(xmlbz2listname);
3478 free(xmlbz2listname);
3479 xmlbz2listname = NULL;
3480 fclose(in);
3481 return;
3482 }
3483 out = BZ2_bzWriteOpen(&err, real, 9, 0, 0);
3484 if(err != BZ_OK)
3485 {
3486 flog(LOG_WARNING, "could not open bzip2 stream from XML list");
3487 fclose(real);
3488 unlink(xmlbz2listname);
3489 free(xmlbz2listname);
3490 xmlbz2listname = NULL;
3491 fclose(in);
3492 return;
3493 }
3494 while(!feof(in))
3495 {
3496 bufdata = fread(buf, 1, sizeof(buf), in);
3497 BZ2_bzWrite(&err, out, buf, bufdata);
3498 }
3499 fclose(in);
3500 BZ2_bzWriteClose(&err, out, 0, NULL, NULL);
3501 fclose(real);
3502}
3503
3504static int shareupdate(unsigned long long uusharesize, void *data)
3505{
3506 updatehmlist();
3507 updatexmllist();
3508 updatexmlbz2list();
3509 return(0);
3510}
3511
3512static void dispatchcommand(struct qcommand *qcmd, struct command *cmdlist, struct socket *sk, void *data)
3513{
3514 char *p;
3515 struct command *cmd;
3516
3517 if((p = strchr(qcmd->string, ' ')) != NULL)
3518 *(p++) = 0;
3519 for(cmd = cmdlist; cmd->handler != NULL; cmd++)
3520 {
3521 if(!strcmp(cmd->name, qcmd->string))
3522 break;
3523 }
3524 if(cmd->handler != NULL)
3525 cmd->handler(sk, data, qcmd->string, p);
3526/*
3527 else
3528 flog(LOG_DEBUG, "Unimplemented DC command: %s \"%s\"", qcmd->string, p?p:"noargs");
3529*/
3530}
3531
3532static int run(void)
3533{
3534 struct fnetnode *fn, *nextfn;
3535 struct dchub *hub;
3536 struct dcpeer *peer, *nextpeer;
3537 struct qcommand *qcmd;
3538 int ret;
3539
3540 ret = 0;
3541 for(fn = fnetnodes; fn != NULL; fn = nextfn)
3542 {
3543 nextfn = fn->next;
3544 if(fn->fnet != &dcnet)
3545 continue;
3546 if(fn->data == NULL)
3547 continue;
3548 hub = (struct dchub *)fn->data;
3549 if((qcmd = ulqcmd(&hub->queue)) != NULL)
3550 {
3551 if(*qcmd->string == '$')
3552 {
3553 if((fn->sk != NULL) && (fn->sk->state == SOCK_EST))
3554 dispatchcommand(qcmd, hubcmds, fn->sk, fn);
3555 } else if(*qcmd->string != 0) {
3556 hubrecvchat(fn->sk, fn, NULL, qcmd->string);
3557 }
3558 freeqcmd(qcmd);
3559 ret = 1;
3560 break;
3561 }
3562 }
3563 for(peer = peers; peer != NULL; peer = nextpeer)
3564 {
3565 nextpeer = peer->next;
3566 if((qcmd = ulqcmd(&peer->queue)) != NULL)
3567 {
1e9d82b1 3568 if(peer->timeout != NULL)
3569 canceltimer(peer->timeout);
3570 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 3571 if(*qcmd->string == '$')
3572 dispatchcommand(qcmd, peercmds, peer->sk, peer);
3573 freeqcmd(qcmd);
3574 ret = 1;
3575 break;
3576 }
3577 }
3578 return(ret);
3579}
3580
3581static void preinit(int hup)
3582{
3583 if(hup)
3584 return;
3585 regfnet(&dcnet);
3586}
3587
3588static int updateudpport(struct configvar *var, void *uudata)
3589{
3590 struct sockaddr_in addr;
3591 struct socket *newsock;
3592
3593 memset(&addr, 0, sizeof(addr));
3594 addr.sin_family = AF_INET;
3595 addr.sin_port = htons(var->val.num);
3596 if((newsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3597 {
3598 flog(LOG_WARNING, "could not create new DC UDP socket, reverting to old: %s", strerror(errno));
3599 return(0);
3600 }
3601 newsock->readcb = udpread;
3602 if(udpsock != NULL)
3603 putsock(udpsock);
3604 udpsock = newsock;
3605 return(0);
3606}
3607
3608static int updatetcpport(struct configvar *var, void *uudata)
3609{
3610 struct sockaddr_in addr;
3611 struct socket *newsock;
3612
3613 memset(&addr, 0, sizeof(addr));
3614 addr.sin_family = AF_INET;
3615 addr.sin_port = htons(var->val.num);
3616 if((newsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3617 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3618 if(tcpsock != NULL)
3619 putsock(tcpsock);
3620 tcpsock = newsock;
3621 return(0);
3622}
3623
3624static int init(int hup)
3625{
3626 struct sockaddr_in addr;
3627
3628 if(!hup)
3629 {
3630 GCBREG(sharechangecb, shareupdate, NULL);
3631 if(udpsock != NULL)
3632 putsock(udpsock);
3633 if(tcpsock != NULL)
3634 putsock(tcpsock);
3635 addr.sin_family = AF_INET;
3636 memset(&addr.sin_addr, 0, sizeof(addr.sin_addr));
3637 addr.sin_port = htons(confgetint("dc", "udpport"));
3638 if((udpsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3639 {
3640 flog(LOG_CRIT, "could not create DC UDP socket: %s", strerror(errno));
3641 return(1);
3642 }
3643 udpsock->readcb = udpread;
3644 addr.sin_port = htons(confgetint("dc", "tcpport"));
3645 if((tcpsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3646 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3647 CBREG(confgetvar("dc", "udpport"), conf_update, updateudpport, NULL, NULL);
3648 CBREG(confgetvar("dc", "tcpport"), conf_update, updatetcpport, NULL, NULL);
3649 CBREG(confgetvar("net", "mode"), conf_update, updatetcpport, NULL, NULL);
3650 }
3651 return(0);
3652}
3653
3654static void terminate(void)
3655{
3656 if(hmlistname != NULL)
3657 {
3658 unlink(hmlistname);
3659 free(hmlistname);
3660 }
3661 if(xmllistname != NULL)
3662 {
3663 unlink(xmllistname);
3664 free(xmllistname);
3665 }
3666 if(xmlbz2listname != NULL)
3667 {
3668 unlink(xmlbz2listname);
3669 free(xmlbz2listname);
3670 }
3671}
3672
3673static struct configvar myvars[] =
3674{
3675 {CONF_VAR_STRING, "desc", {.str = L""}},
3676 {CONF_VAR_STRING, "speedstring", {.str = L"LAN(T1)"}},
3677 {CONF_VAR_STRING, "email", {.str = L"spam@spam.org"}},
3678 {CONF_VAR_INT, "udpport", {.num = 0}},
3679 {CONF_VAR_INT, "tcpport", {.num = 0}},
1c4b02cd 3680 {CONF_VAR_BOOL, "dcppemu", {.num = 0}},
d3372da9 3681 {CONF_VAR_END}
3682};
3683
3684static struct module me =
3685{
3686 .conf =
3687 {
3688 .vars = myvars
3689 },
3690 .preinit = preinit,
3691 .init = init,
3692 .run = run,
3693 .terminate = terminate,
3694 .name = "dc"
3695};
3696
3697MODULE(me)
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