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Don't use freed data.
[doldaconnect.git] / daemon / fnet-dc.c
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d3372da9 1/*
2 * Dolda Connect - Modular multiuser Direct Connect-style client
3 * Copyright (C) 2004 Fredrik Tolf (fredrik@dolda2000.com)
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18*/
19#include <stdlib.h>
20#include <stdio.h>
21#include <wchar.h>
22#include <malloc.h>
23#include <unistd.h>
24#include <fcntl.h>
25#include <string.h>
26#include <netinet/in.h>
27#include <arpa/inet.h>
28#include <alloca.h>
29#include <wctype.h>
30#include <time.h>
31#include <errno.h>
32#include <bzlib.h>
33#include <zlib.h>
34#include <sys/stat.h>
35
36#ifdef HAVE_CONFIG_H
37#include <config.h>
38#endif
39#include "filenet.h"
40#include "log.h"
41#include "module.h"
42#include "utils.h"
43#include "client.h"
44#include "transfer.h"
45#include "sysevents.h"
46#include "net.h"
9a2d6cb8 47#include "tiger.h"
d3372da9 48
49/*
50 * The Direct Connect protocol is extremely ugly. Thus, this code must
51 * also be a bit ugly in certain places. Please forgive me. =/
52 *
53 * This also means that there might be some pieces of the code that
54 * look completely illogical to you, and you think that you may make
55 * them much neater/better. However, in many cases it might just be
56 * that it's required to cope with some oddity of the protocol, such
57 * as the amazingly ugly delayed key response in the peer protocol.
58 */
59
60/* I assume this is the correct character set to use for DC,
61 * considering it was developed without i18n support under Windows */
62#define DCCHARSET "windows-1252"
63
64#ifdef DCPP_MASQUERADE
65/*
66 * I honestly don't want to pretend being a client that I'm not, but
67 * there are so many hubs that simply do not accept any clients
68 * outside their whitelists, for no obvious reasons, so I feel that I
69 * am left with little choice. Anyhow, as long as I actually support
70 * all the features that my faked DC++ version does, there should be
71 * very little harm done.
72 */
73#define DCIDTAG "++"
74#define DCIDTAGV "0.674"
75#define DCIDFULL "DC++ 0.674"
76#else
77#define DCIDTAG "Dolda"
78#define DCIDTAGV VERSION
79#define DCIDFULL "DoldaConnect " VERSION
80#endif
81
82#define PEER_CMD 0
9a2d6cb8 83#define PEER_STOP 1
84#define PEER_TRNS 2
85#define PEER_SYNC 3
86#define PEER_TTHL 4
d3372da9 87
88#define CPRS_NONE 0
89#define CPRS_ZLIB 1
90
91struct command
92{
93 char *name;
94 void (*handler)(struct socket *sk, void *data, char *cmd, char *args);
9a2d6cb8 95 int stop;
d3372da9 96};
97
98struct qcommand
99{
100 struct qcommand *next;
101 char *string;
102};
103
104struct dchub
105{
106 char *inbuf;
107 size_t inbufdata, inbufsize;
108 struct qcommand *queue;
1c4b02cd 109 int extended, dcppemu;
1d85f24b 110 char *charset;
d3372da9 111 char *nativename;
112 char *nativenick;
113};
114
115struct dcexppeer
116{
117 struct dcexppeer *next, *prev;
118 char *nick;
119 struct fnetnode *fn;
120 struct timer *expire;
121};
122
123struct dcpeer
124{
125 struct dcpeer *next, *prev;
126 struct socket *sk;
127 struct fnetnode *fn;
128 char *inbuf;
129 size_t inbufdata, inbufsize;
9a2d6cb8 130 size_t curread, totalsize;
d3372da9 131 int freeing;
1e9d82b1 132 struct timer *timeout;
d3372da9 133 struct qcommand *queue;
134 struct transfer *transfer;
135 int state;
136 int ptclose; /* Close after transfer is complete */
137 int accepted; /* If false, we connected, otherwise, we accepted */
1c4b02cd 138 int extended, dcppemu;
d3372da9 139 int direction; /* Using the constants from transfer.h */
140 int compress;
df873cd0 141 int hascurpos, fetchingtthl, notthl;
9a2d6cb8 142 struct tigertreehash tth;
1d85f24b 143 char *charset;
d3372da9 144 void *cprsdata;
d3372da9 145 char *key;
146 char *nativename;
147 char **supports;
148 wchar_t *wcsname;
149};
150
151static struct fnet dcnet;
152static struct transferiface dctransfer;
153static struct socket *udpsock = NULL;
154static struct socket *tcpsock = NULL;
155static struct dcpeer *peers = NULL;
156int numdcpeers = 0;
157static struct dcexppeer *expected = NULL;
158static char *hmlistname = NULL;
159static char *xmllistname = NULL;
160static char *xmlbz2listname = NULL;
161
162static void peerconnect(struct socket *sk, int err, struct fnetnode *fn);
163static void freedcpeer(struct dcpeer *peer);
164static void transread(struct socket *sk, struct dcpeer *peer);
165static void transerr(struct socket *sk, int err, struct dcpeer *peer);
166static void transwrite(struct socket *sk, struct dcpeer *peer);
167static void updatehmlist(void);
168static void updatexmllist(void);
169static void updatexmlbz2list(void);
9a2d6cb8 170static void requestfile(struct dcpeer *peer);
d3372da9 171
172static int reservedchar(unsigned char c)
173{
174 return((c == 0) || (c == 5) || (c == 124) || (c == 96) || (c == 126) || (c == 36));
175}
176
177/* Oh, how I despise having to do this... */
178static char *dcmakekey(char *lock)
179{
180 int i, len, offset;
181 char *buf, *key;
182 char save;
183
184 buf = smalloc(strlen(lock));
185 save = 5;
186 len = 0;
187 for(i = 0; lock[i]; i++)
188 {
189 buf[i] = lock[i] ^ save;
190 buf[i] = ((buf[i] & 0x0F) << 4) | ((buf[i] & 0xF0) >> 4);
191 save = lock[i];
192 if((i != 0) && reservedchar(buf[i]))
193 len += 10;
194 else
195 len++;
196 }
197 buf[0] ^= buf[i - 1];
198 if(reservedchar(buf[0]))
199 len += 10;
200 else
201 len++;
202 key = smalloc(len + 1);
203 offset = 0;
204 for(i = 0; lock[i] != 0; i++)
205 {
206 if(reservedchar(buf[i]))
207 offset += sprintf(key + offset, "/%%DCN%03i%%/", buf[i]);
208 else
209 key[offset++] = buf[i];
210 }
211 key[offset] = 0;
212 free(buf);
213 return(key);
214}
215
9a2d6cb8 216static char *pathnmdc2adc(char *path)
217{
218 char *ret;
219 size_t retsize, retdata;
220
221 if(!strcmp(path, "files.xml") || !strcmp(path, "files.xml.bz2") || !strcmp(path, "MyList.DcLst"))
222 return(sstrdup(path));
223 ret = NULL;
224 retsize = retdata = 0;
225 addtobuf(ret, '/');
226 for(; *path; path++)
227 {
228 if(*path == '\\')
229 addtobuf(ret, '/');
230 else
231 addtobuf(ret, *path);
232 }
233 addtobuf(ret, 0);
234 return(ret);
235}
236
237static int isdchash(struct hash *hash)
238{
239 if(wcscmp(hash->algo, L"TTH"))
240 return(0);
241 if(hash->len != 24)
242 return(0);
243 return(1);
244}
245
246static int supports(struct dcpeer *peer, char *cap)
247{
248 char **p;
249
250 if(peer->supports == NULL)
251 return(0);
252 for(p = peer->supports; *p != NULL; p++)
253 {
254 if(!strcasecmp(*p, cap))
255 return(1);
256 }
257 return(0);
258}
259
d3372da9 260static void endcompress(struct dcpeer *peer)
261{
262 if(peer->compress == CPRS_ZLIB)
263 {
264 deflateEnd(peer->cprsdata);
265 free(peer->cprsdata);
266 }
267 peer->compress = CPRS_NONE;
268}
269
270static void initcompress(struct dcpeer *peer, int algo)
271{
272 int ret;
273
274 endcompress(peer);
275 peer->compress = algo;
276 if(algo == CPRS_ZLIB)
277 {
278 peer->cprsdata = smalloc(sizeof(z_stream));
279 memset(peer->cprsdata, 0, sizeof(z_stream));
280 if((ret = deflateInit(peer->cprsdata, 3)) != Z_OK)
281 {
282 flog(LOG_CRIT, "Aiya! zlib refuses to init (%i)!", ret);
283 abort();
284 }
285 }
286}
287
288static void unquote(wchar_t *in)
289{
290 wchar_t *p, *p2, nc;
291
292 for(p = in; *p != L'\0'; p++)
293 {
294 if(*p == L'&')
295 {
296 for(p2 = p + 1; (*p2 != L'\0') && (*p2 != L';') && (*p2 != L'&'); p2++);
297 if(*p2 == L'&')
298 continue;
299 if(*p2 == L'\0')
300 return;
301 *p2 = L'\0';
302 nc = L'\0';
303 if(!wcscmp(p + 1, L"amp"))
304 {
305 nc = L'&';
306 } else if(p[1] == L'#') {
307 nc = ucptowc(wcstol(p + 2, NULL, 10));
308 }
309 if(nc == L'\0')
310 {
311 *p2 = L';';
312 p = p2;
313 continue;
314 }
315 *p = nc;
316 memmove(p + 1, p2 + 1, (wcslen(p2 + 1) + 1) * sizeof(wchar_t));
317 }
318 }
319}
320
321static void freeexppeer(struct dcexppeer *ep)
322{
323 if(ep->next != NULL)
324 ep->next->prev = ep->prev;
325 if(ep->prev != NULL)
326 ep->prev->next = ep->next;
327 if(ep == expected)
328 expected = ep->next;
329 free(ep->nick);
330 putfnetnode(ep->fn);
331 if(ep->expire != NULL)
332 canceltimer(ep->expire);
333 free(ep);
334}
335
336static void exppeerexpire(int cancelled, struct dcexppeer *ep)
337{
338 ep->expire = NULL;
339 if(!cancelled)
340 freeexppeer(ep);
341}
342
343static struct dcexppeer *expectpeer(char *nick, struct fnetnode *fn)
344{
345 struct dcexppeer *ep;
346
347 ep = smalloc(sizeof(*ep));
348 ep->nick = sstrdup(nick);
349 getfnetnode(ep->fn = fn);
350 ep->expire = timercallback(ntime() + 300, (void (*)(int, void *))exppeerexpire, ep);
351 ep->next = expected;
352 ep->prev = NULL;
353 if(expected != NULL)
354 expected->prev = ep;
355 expected = ep;
356 return(ep);
357}
358
359static struct qcommand *newqcmd(struct qcommand **queue, char *string)
360{
361 struct qcommand *new;
362
363 while(*queue != NULL)
364 queue = &(*queue)->next;
365 new = smalloc(sizeof(*new));
366 new->string = sstrdup(string);
367 new->next = *queue;
368 *queue = new;
369 return(new);
370}
371
372static struct qcommand *ulqcmd(struct qcommand **queue)
373{
374 struct qcommand *qcmd;
375
376 if((qcmd = *queue) == NULL)
377 return(NULL);
378 *queue = qcmd->next;
379 return(qcmd);
380}
381
382static void freeqcmd(struct qcommand *qcmd)
383{
384 free(qcmd->string);
385 free(qcmd);
386}
387
388static void hubrecvchat(struct socket *sk, struct fnetnode *fn, char *from, char *string)
389{
390 wchar_t *chat, *wfrom, *wpeer;
391 char *p, *end;
392 struct fnetpeer *peer;
1d85f24b 393 struct dchub *hub;
d3372da9 394
1d85f24b 395 hub = fn->data;
d3372da9 396 end = string + strlen(string);
397 while((p = strchr(string, 13)) != NULL)
398 memmove(p, p + 1, (end-- - p));
399 if(from != NULL)
400 {
401 if((strlen(string) > strlen(from) + 2) && (*string == '<') && !memcmp(string + 1, from, strlen(from)) && (*(string + strlen(from) + 1) == '>'))
402 string += strlen(from) + 2;
1d85f24b 403 if((wfrom = icmbstowcs(from, hub->charset)) == NULL)
d3372da9 404 return;
405 wpeer = swcsdup(wfrom);
406 } else {
407 wfrom = NULL;
408 wpeer = NULL;
409 if(*string == '<')
410 {
411 for(p = string + 1; *p; p++)
412 {
413 if((*p == ' ') || (*p == '>'))
414 break;
415 }
416 if(*p == '>')
417 {
418 *(p++) = 0;
419 if(*p == ' ')
420 p++;
1d85f24b 421 if((wpeer = icmbstowcs(string + 1, hub->charset)) == NULL)
d3372da9 422 return;
423 string = p;
424 }
425 }
426 if(wpeer == NULL)
427 wpeer = swcsdup(L"");
428 }
1d85f24b 429 if((chat = icmbstowcs(string, hub->charset)) == NULL)
d3372da9 430 {
431 if(wfrom != NULL)
432 free(wfrom);
433 free(wpeer);
434 return;
435 }
436 unquote(chat);
437 if(wfrom != NULL)
438 {
439 if((peer = fnetfindpeer(fn, wfrom)) == NULL) /* Assume public chat */
440 fnethandlechat(fn, 1, wfrom, wpeer, chat);
441 else
442 fnethandlechat(fn, 0, wfrom, wpeer, chat);
443 } else {
444 fnethandlechat(fn, 1, L"", wpeer, chat);
445 }
446 if(wfrom != NULL)
447 free(wfrom);
448 free(wpeer);
449 free(chat);
450}
451
1e9d82b1 452static void peertimeout(int cancelled, struct dcpeer *peer)
453{
454 peer->timeout = NULL;
455 if(cancelled)
456 return;
457 freedcpeer(peer);
458}
459
d3372da9 460static void sendadc(struct socket *sk, char *arg)
461{
462 char *buf;
463 size_t bufsize, bufdata;
464
465 buf = NULL;
466 bufsize = bufdata = 0;
467 addtobuf(buf, ' ');
468 for(; *arg; arg++)
469 {
470 if(*arg == ' ')
471 {
472 bufcat(buf, "\\s", 2);
473 } else if(*arg == '\n') {
474 bufcat(buf, "\\n", 2);
475 } else if(*arg == '\\') {
476 bufcat(buf, "\\\\", 2);
477 } else {
478 addtobuf(buf, *arg);
479 }
480 }
481 sockqueue(sk, buf, bufdata);
482 free(buf);
483}
484
485static void sendadcf(struct socket *sk, char *arg, ...)
486{
487 char *buf;
488 va_list args;
489
490 va_start(args, arg);
491 buf = vsprintf2(arg, args);
492 va_end(args);
493 if(buf == NULL)
494 return;
495 sendadc(sk, buf);
496 free(buf);
497}
498
499static char **parseadc(char *args)
500{
501 char **retbuf;
502 size_t retbufsize, retbufdata;
503 char *buf;
504 size_t bufsize, bufdata;
505 int state;
506
507 retbuf = NULL;
508 buf = NULL;
509 retbufsize = retbufdata = bufsize = bufdata = 0;
510 state = 0;
511 while(state != 3)
512 {
513 switch(state)
514 {
515 case 0:
516 if(*args == 0)
517 state = 3;
518 else if(*args != ' ')
519 state = 1;
520 break;
521 case 1:
522 if((*args == ' ') || (*args == 0))
523 {
524 addtobuf(buf, 0);
525 addtobuf(retbuf, buf);
526 buf = NULL;
527 bufsize = bufdata = 0;
528 if(*args == 0)
529 state = 3;
530 } else if(*args == '\\') {
531 state = 2;
532 } else {
533 addtobuf(buf, *args);
534 }
535 args++;
536 break;
537 case 2:
538 if(*args == 0)
539 {
540 if(buf != NULL)
541 free(buf);
542 addtobuf(retbuf, NULL);
543 freeparr(retbuf);
544 return(NULL);
f24d5cfb 545 } else if((*args == 's') || (*args == ' ')) {
d3372da9 546 addtobuf(buf, ' ');
547 } else if(*args == 'n') {
548 addtobuf(buf, '\n');
549 } else if(*args == '\\') {
550 addtobuf(buf, '\\');
551 }
a478552c 552 args++;
d3372da9 553 state = 1;
a478552c 554 break;
d3372da9 555 }
556 }
557 if(buf != NULL)
558 free(buf);
559 addtobuf(retbuf, NULL);
560 return(retbuf);
561}
562
563/* Macros useful in command handlers */
564#define skipspace(s) ({if(((s) = strchr((s), ' ')) == NULL) return; else (s)++;})
565#define qstr(sk, str) sockqueue(sk, str, strlen(str))
566#define qstrf(sk, strandargs...) \
567do { \
568 char *__buf__; \
569 if((__buf__ = sprintf2(strandargs)) != NULL) { \
570 sockqueue(sk, __buf__, strlen(__buf__)); \
571 free(__buf__); \
572 } \
573} while(0)
574
575static char *tr(char *str, char *trans)
576{
577 char *p;
578
579 for(; *trans; trans += 2)
580 {
581 for(p = strchr(str, trans[0]); p != NULL; p = strchr(p, trans[0]))
582 *p = trans[1];
583 }
584 return(str);
585}
586
9a2d6cb8 587static char *getadcid(struct dcpeer *peer)
588{
589 char *buf;
590 char *ret;
d57f938a 591 int isfilelist;
9a2d6cb8 592
2a157d1a 593 isfilelist = 0;
d57f938a 594 if(!wcscmp(peer->transfer->path, L"files.xml") || !wcscmp(peer->transfer->path, L"files.xml.bz2") || !wcscmp(peer->transfer->path, L"MyList.DcLst"))
595 isfilelist = 1;
596 if(!isfilelist && (peer->transfer->hash != NULL) && isdchash(peer->transfer->hash) && supports(peer, "tthf"))
9a2d6cb8 597 {
598 buf = base32encode(peer->transfer->hash->buf, 24);
599 ret = sprintf2("TTH/%.39s", buf);
600 free(buf);
601 } else {
602 if((buf = icwcstombs(peer->transfer->path, "UTF-8")) == NULL)
603 return(NULL);
604 ret = pathnmdc2adc(buf);
605 free(buf);
606 }
607 return(ret);
608}
609
610
d3372da9 611static int trresumecb(struct transfer *transfer, wchar_t *cmd, wchar_t *arg, struct dcpeer *peer)
612{
613 if(!wcscmp(cmd, L"resume"))
614 {
615 if(arg == NULL)
616 {
617 flog(LOG_WARNING, "filter returned no position for \"resume\" on transfer %i", transfer->id);
618 freedcpeer(peer);
619 } else {
620 transfer->curpos = wcstol(arg, NULL, 10);
9a2d6cb8 621 peer->hascurpos = 1;
622 requestfile(peer);
d3372da9 623 }
d3372da9 624 return(1);
625 }
626 return(0);
627}
628
9a2d6cb8 629static void sendmynick(struct dcpeer *peer)
d3372da9 630{
1d85f24b 631 struct fnetnode *fn;
d3372da9 632
1d85f24b 633 fn = peer->fn;
634 if(fn == NULL)
635 qstrf(peer->sk, "$MyNick %s|", icswcstombs(confgetstr("cli", "defnick"), peer->charset, "DoldaConnectUser-IN"));
9a2d6cb8 636 else
1d85f24b 637 qstrf(peer->sk, "$MyNick %s|", icswcstombs(fn->mynick, peer->charset, "DoldaConnectUser-IN"));
9a2d6cb8 638}
639
640static void sendpeerlock(struct dcpeer *peer)
641{
1c4b02cd 642 if(peer->dcppemu)
643 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DCPLUSPLUS0.674ABCABC|");
644 else
645 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DOLDA%sABCABCABC|", VERSION);
9a2d6cb8 646}
647
648static void sendsupports(struct dcpeer *peer)
649{
1c4b02cd 650 if(peer->dcppemu)
651 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG |");
652 else
653 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG|");
9a2d6cb8 654}
655
656static void requestfile(struct dcpeer *peer)
657{
658 char *buf;
659
660 if(peer->transfer->size == -1)
d3372da9 661 {
1d85f24b 662 /* Use DCCHARSET for $Get paths until further researched... */
9a2d6cb8 663 if((buf = icswcstombs(peer->transfer->path, DCCHARSET, NULL)) == NULL)
d3372da9 664 {
9a2d6cb8 665 transferseterror(peer->transfer, TRNSE_NOTFOUND);
666 freedcpeer(peer);
d3372da9 667 return;
668 }
9a2d6cb8 669 /* The transfer will be restarted later from
670 * cmd_filelength when it detects that the sizes
671 * don't match. */
672 qstrf(peer->sk, "$Get %s$1|", buf);
673 return;
d3372da9 674 }
9a2d6cb8 675 if((peer->transfer->hash == NULL) && !peer->notthl)
d3372da9 676 {
9a2d6cb8 677 if(supports(peer, "adcget") && supports(peer, "tthl"))
d3372da9 678 {
9a2d6cb8 679 qstr(peer->sk, "$ADCGET");
680 sendadc(peer->sk, "tthl");
681 if((buf = getadcid(peer)) == NULL)
d3372da9 682 {
9a2d6cb8 683 transferseterror(peer->transfer, TRNSE_NOTFOUND);
d3372da9 684 freedcpeer(peer);
685 return;
686 }
9a2d6cb8 687 sendadc(peer->sk, buf);
688 free(buf);
689 sendadc(peer->sk, "0");
690 sendadc(peer->sk, "-1");
691 qstr(peer->sk, "|");
df873cd0 692 peer->fetchingtthl = 1;
9a2d6cb8 693 return;
694 }
695 }
696 if(!peer->hascurpos)
697 {
698 if(forkfilter(peer->transfer))
699 {
700 flog(LOG_WARNING, "could not fork filter for transfer %i: %s", peer->transfer->id, strerror(errno));
701 freedcpeer(peer);
702 return;
d3372da9 703 }
9a2d6cb8 704 CBREG(peer->transfer, trans_filterout, (int (*)(struct transfer *, wchar_t *, wchar_t *, void *))trresumecb, NULL, peer);
705 return;
706 }
707 if(supports(peer, "adcget"))
708 {
709 qstr(peer->sk, "$ADCGET");
710 sendadc(peer->sk, "file");
711 if((buf = getadcid(peer)) == NULL)
712 {
713 transferseterror(peer->transfer, TRNSE_NOTFOUND);
714 freedcpeer(peer);
715 return;
716 }
717 sendadc(peer->sk, buf);
718 free(buf);
719 sendadcf(peer->sk, "%i", peer->transfer->curpos);
720 sendadcf(peer->sk, "%i", peer->transfer->size - peer->transfer->curpos);
721 qstr(peer->sk, "|");
722 } else if(supports(peer, "xmlbzlist")) {
723 if((buf = icswcstombs(peer->transfer->path, "UTF-8", NULL)) == NULL)
724 {
725 transferseterror(peer->transfer, TRNSE_NOTFOUND);
726 freedcpeer(peer);
727 return;
728 }
729 qstrf(peer->sk, "$UGetBlock %i %i %s|", peer->transfer->curpos, peer->transfer->size - peer->transfer->curpos, buf);
d3372da9 730 } else {
1d85f24b 731 /* Use DCCHARSET for $Get paths until further researched... */
9a2d6cb8 732 if((buf = icswcstombs(peer->transfer->path, DCCHARSET, NULL)) == NULL)
d3372da9 733 {
9a2d6cb8 734 transferseterror(peer->transfer, TRNSE_NOTFOUND);
735 freedcpeer(peer);
736 return;
d3372da9 737 }
9a2d6cb8 738 qstrf(peer->sk, "$Get %s$%i|", buf, peer->transfer->curpos + 1);
d3372da9 739 }
740}
741
742static void sendmyinfo(struct socket *sk, struct fnetnode *fn)
743{
744 struct dchub *hub;
745 char *buf;
746 struct fnetnode *cfn;
69757b8c 747 int hn1, hn2, hn3;
d3372da9 748
749 hub = fn->data;
750 qstrf(sk, "$MyINFO $ALL %s ", hub->nativenick);
1d85f24b 751 buf = tr(icswcstombs(confgetstr("dc", "desc"), hub->charset, "Charset_conv_failure"), "$_|_");
d3372da9 752 qstrf(sk, "%s", buf);
69757b8c 753 hn1 = hn2 = hn3 = 0;
d3372da9 754 for(cfn = fnetnodes; cfn != NULL; cfn = cfn->next)
755 {
756 if((cfn->state == FNN_EST) || (cfn->state == FNN_HS))
69757b8c 757 {
758 if(cfn->regstatus == FNNS_OP)
759 hn3++;
760 else if(cfn->regstatus == FNNS_REG)
761 hn2++;
762 else
763 hn1++;
764 }
d3372da9 765 }
69757b8c 766 qstrf(sk, "<%s V:%s,M:%c,H:%i/%i/%i,S:%i>",
1c4b02cd 767 (hub->dcppemu)?"++":"Dolda",
768 (hub->dcppemu)?"0.674":VERSION,
d3372da9 769 (tcpsock == NULL)?'P':'A',
69757b8c 770 hn1, hn2, hn3,
d3372da9 771 confgetint("transfer", "slots")
772 );
773 qstrf(sk, "$ $");
1d85f24b 774 buf = tr(icswcstombs(confgetstr("dc", "speedstring"), hub->charset, "Charset_conv_failure"), "$_|_");
d3372da9 775 qstrf(sk, "%s\x01$", buf);
1d85f24b 776 buf = tr(icswcstombs(confgetstr("dc", "email"), hub->charset, "Charset_conv_failure"), "$_|_");
d3372da9 777 qstrf(sk, "%s$", buf);
778 qstrf(sk, "%llu$|", sharesize);
779}
780
781static void hubhandleaction(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
782{
783 struct dchub *hub;
784
785 hub = fn->data;
786 if(!strcmp(cmd, "$Lock"))
787 {
788 qstrf(sk, "$ValidateNick %s|", hub->nativenick);
789 } else if(!strcmp(cmd, "$Hello")) {
790 if(fn->state == FNN_HS)
791 {
792 qstrf(sk, "$Version 1,0091|");
793 qstrf(sk, "$GetNickList|");
794 sendmyinfo(sk, fn);
795 fnetsetstate(fn, FNN_EST);
796 } else {
797 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
798 }
799 }
800}
801
802static void cmd_lock(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
803{
804 struct dchub *hub;
805 char *key;
806 char *p;
807
808 hub = fn->data;
809 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
810 hub->extended = 1;
811 if((p = strchr(args, ' ')) != NULL)
812 *(p++) = 0;
813 if(hub->extended)
814 {
1c4b02cd 815 if(hub->dcppemu)
816 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock |");
817 else
818 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock|");
d3372da9 819 }
820 key = dcmakekey(args);
821 qstrf(sk, "$Key %s|", key);
822 free(key);
823 hubhandleaction(sk, fn, cmd, args);
824}
825
826static void cmd_hubname(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
827{
828 wchar_t *buf;
829 struct dchub *hub;
830
831 hub = fn->data;
832 if(hub->nativename == NULL)
833 free(hub->nativename);
834 hub->nativename = sstrdup(args);
1d85f24b 835 buf = icmbstowcs(args, hub->charset);
d3372da9 836 fnetsetname(fn, (buf == NULL)?L"Hubname conv error":buf);
837 if(buf != NULL)
838 free(buf);
839 hubhandleaction(sk, fn, cmd, args);
840}
841
842static void cmd_hello(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
843{
844 wchar_t *nick;
845 struct dchub *hub;
846
847 hub = fn->data;
1d85f24b 848 if((nick = icmbstowcs(args, hub->charset)) == NULL)
d3372da9 849 return;
850 if(strcmp(args, hub->nativenick) && (fnetfindpeer(fn, nick) == NULL))
851 fnetaddpeer(fn, nick, nick);
852 free(nick);
853 hubhandleaction(sk, fn, cmd, args);
854}
855
856static void cmd_quit(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
857{
858 wchar_t *nick;
859 struct fnetpeer *peer;
860 struct dchub *hub;
861
862 hub = fn->data;
1d85f24b 863 if((nick = icmbstowcs(args, hub->charset)) == NULL)
d3372da9 864 return;
865 if((peer = fnetfindpeer(fn, nick)) != NULL)
866 fnetdelpeer(peer);
867 free(nick);
868 hubhandleaction(sk, fn, cmd, args);
869}
870
871static void cmd_nicklist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
872{
873 struct dchub *hub;
874 char *p;
875 wchar_t *buf;
876 struct fnetpeer *peer, *npeer;
877
878 hub = fn->data;
879 for(peer = fn->peers; peer != NULL; peer = peer->next)
880 peer->flags.b.delete = 1;
881 while((p = strstr(args, "$$")) != NULL)
882 {
883 *p = 0;
1d85f24b 884 if((buf = icmbstowcs(args, hub->charset)) != NULL)
d3372da9 885 {
886 if((peer = fnetfindpeer(fn, buf)) == NULL)
887 peer = fnetaddpeer(fn, buf, buf);
888 else
889 peer->flags.b.delete = 0;
890 free(buf);
891 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
892 }
893 args = p + 2;
894 }
895 for(peer = fn->peers; peer != NULL; peer = npeer)
896 {
897 npeer = peer->next;
898 if(peer->flags.b.delete)
899 fnetdelpeer(peer);
900 }
901 hubhandleaction(sk, fn, cmd, args);
902}
903
904static void cmd_oplist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
905{
906 struct dchub *hub;
907 char *p;
908 wchar_t *buf;
909 struct fnetpeer *peer;
910
911 hub = fn->data;
912 for(peer = fn->peers; peer != NULL; peer = peer->next)
913 peer->flags.b.op = 0;
914 while((p = strstr(args, "$$")) != NULL)
915 {
916 *p = 0;
1d85f24b 917 if((buf = icmbstowcs(args, hub->charset)) != NULL)
d3372da9 918 {
919 if((peer = fnetfindpeer(fn, buf)) != NULL)
920 peer->flags.b.op = 1;
921 free(buf);
922 }
923 args = p + 2;
924 }
925 hubhandleaction(sk, fn, cmd, args);
926}
927
928static void cmd_myinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
929{
930 char *p, *p2;
931 wchar_t *buf, *wp, *wp2;
932 wchar_t abuf[10];
933 struct fnetpeer *peer;
934 struct dchub *hub;
935
936 hub = fn->data;
937 p = args;
938 if(strncmp(p, "$ALL ", 5))
939 return;
940 p += 5;
941 if((p2 = strchr(p, ' ')) == NULL)
942 return;
943 *p2 = 0;
1d85f24b 944 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 945 return;
946 if((peer = fnetfindpeer(fn, buf)) == NULL)
947 peer = fnetaddpeer(fn, buf, buf);
948 free(buf);
949 p = p2 + 1;
950 if((p2 = strstr(p, "$ $")) == NULL)
951 return;
952 *p2 = 0;
1d85f24b 953 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 954 return;
316e9a13 955 if((wcslen(buf) > 0) && (buf[wcslen(buf) - 1] == L'>') && ((wp = wcsrchr(buf, L'<')) != NULL))
d3372da9 956 {
957 buf[wcslen(buf) - 1] = L'\0';
958 *(wp++) = L'\0';
959 if((wp2 = wcschr(wp, L' ')) != NULL)
960 {
961 *(wp2++) = L'\0';
962 fnetpeersetstr(peer, L"dc-client", wp);
963 wp = wp2;
964 do
965 {
966 if((wp2 = wcschr(wp, L',')) != NULL)
967 *(wp2++) = L'\0';
968 if(wp[1] != L':')
969 continue;
970 swprintf(abuf, 10, L"dc-tag-%lc", wp[0]);
971 fnetpeersetstr(peer, abuf, wp + 2);
972 wp = wp2;
973 } while(wp2 != NULL);
974 }
975 }
976 fnetpeersetstr(peer, L"descr", buf);
977 free(buf);
978 p = p2 + 3;
979 if((p2 = strchr(p, '$')) == NULL)
980 return;
981 *(p2 - 1) = 0;
1d85f24b 982 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 983 return;
984 fnetpeersetstr(peer, L"dc-speed", buf);
985 free(buf);
986 p = p2 + 1;
987 if((p2 = strchr(p, '$')) == NULL)
988 return;
989 *p2 = 0;
1d85f24b 990 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 991 return;
992 fnetpeersetstr(peer, L"email", buf);
993 free(buf);
994 p = p2 + 1;
995 if(strlen(p) < 1)
996 return;
997 fnetpeersetlnum(peer, L"share", strtoll(p, NULL, 10));
998 hubhandleaction(sk, fn, cmd, args);
999}
1000
1001/* I do not implement the fully in that I do not disconnect from the
1002 * old hub. I do this since I believe that if the hub owner really
1003 * wants to get rid of us, then it is his responsibility to disconnect
1004 * us. */
1005static void cmd_forcemove(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1006{
1007 struct dchub *hub;
1008 struct fnetnode *newfn;
1009 int freeargs;
1010
1011 hub = fn->data;
1012 if(strchr(args, ':') == NULL)
1013 {
1014 args = strcpy(smalloc(strlen(args) + 5), args);
1015 strcat(args, ":411");
1016 freeargs = 1;
1017 } else {
1018 freeargs = 0;
1019 }
efc05613 1020 if((newfn = fnetinitconnect(L"dc", args, NULL)) != NULL)
d3372da9 1021 {
1022 linkfnetnode(newfn);
1023 putfnetnode(newfn);
1024 }
1025 hubhandleaction(sk, fn, cmd, args);
1026 if(freeargs)
1027 free(args);
1028}
1029
1d85f24b 1030static char *getdcpath(struct sharecache *node, size_t *retlen, char *charset)
d3372da9 1031{
1032 char *buf, *buf2;
1033 size_t len, len2;
1034
1035 if(node->parent == NULL)
1036 return(NULL);
1037 if(node->parent == shareroot)
1038 {
1d85f24b 1039 if((buf = icwcstombs(node->name, charset)) == NULL)
d3372da9 1040 return(NULL);
1041 if(retlen != NULL)
1042 *retlen = strlen(buf);
1043 return(buf);
1044 } else {
1d85f24b 1045 if((buf2 = icwcstombs(node->name, charset)) == NULL)
d3372da9 1046 return(NULL);
1d85f24b 1047 if((buf = getdcpath(node->parent, &len, charset)) == NULL)
d3372da9 1048 {
1049 free(buf2);
1050 return(NULL);
1051 }
1052 len2 = strlen(buf2);
1053 buf = srealloc(buf, len + 1 + len2 + 1);
1054 buf[len++] = '\\';
1055 strcpy(buf + len, buf2);
1056 buf[len + len2] = 0;
1057 free(buf2);
1058 if(retlen != NULL)
1059 *retlen = len + len2;
1060 return(buf);
1061 }
1062}
1063
1064/*
1065 * This is the main share searching function for Direct Connect
1066 * peers. Feel free to optimize it if you feel the need for it. I
1067 * haven't ever seen it take any noticable CPU time anyway, so I
1068 * haven't felt that need.
1069 *
1070 * It may feel dubious to just return the directory when all terms are
1071 * satisfied rather than all the files in it, but it really benefits
1072 * everyone: Less cycles used for us, less UDP squelching for active
1073 * searchers, and less bandwidth waste for hubs when serving passive
1074 * searchers.
1075 */
1076static void cmd_search(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1077{
1078 int i, done;
1079 struct dchub *hub;
1080 char *p, *p2;
1081 char *prefix, *infix, *postfix, *buf, *buf2;
1082 struct socket *dsk;
1083 struct sockaddr_in addr;
1084 struct sharecache *node;
1085 int minsize, maxsize;
1086 int dotth, buflen;
1087 int termnum, satisfied, skipcheck;
1088 int level, tersat[32];
1089 wchar_t *terms[32];
1090 char hashtth[24];
1091
1092 hub = fn->data;
1093 if((p = strchr(args, ' ')) == NULL)
1094 return;
1095 *(p++) = 0;
1096
1097 memset(terms, 0, sizeof(terms));
1098 prefix = infix = postfix = NULL;
1099 dsk = NULL;
1100 dotth = 0;
1101
1102 if(!strncmp(args, "Hub:", 4))
1103 {
1104 if(!strcmp(cmd, "$MultiSearch"))
1105 goto out;
1106 if(!strcmp(args + 4, hub->nativenick))
1107 goto out;
1108 prefix = sprintf2("$SR %s ", hub->nativenick);
1109 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1110 postfix = sprintf2(" (%s)\005%s|", formataddress(fn->sk->remote, fn->sk->remotelen), args + 4);
1111 dsk = sk;
1112 getsock(dsk);
1113 } else {
1114 if((p2 = strchr(args, ':')) == NULL)
1115 goto out;
1116 *(p2++) = 0;
1117 addr.sin_family = AF_INET;
1118 if(!inet_aton(args, &addr.sin_addr))
1119 goto out;
1120 addr.sin_port = htons(atoi(p2));
1121 prefix = sprintf2("$SR %s ", hub->nativenick);
1122 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1123 postfix = sprintf2(" (%s)|", formataddress(fn->sk->remote, fn->sk->remotelen));
1124 netdgramconn(dsk = netdupsock(udpsock), (struct sockaddr *)&addr, sizeof(addr));
1125 }
1126
1127 minsize = maxsize = -1;
1128 if(*p == 0)
1129 goto out;
1130 if(*(p++) == 'T')
1131 minsize = 0;
1132 if(*(p++) != '?')
1133 goto out;
1134 if(*p == 0)
1135 goto out;
9d8cf743 1136 if((*(p++) == 'T') && (minsize == 0))
d3372da9 1137 {
1138 maxsize = 0;
1139 minsize = -1;
1140 }
1141 if(*(p++) != '?')
1142 goto out;
1143 if((p2 = strchr(p, '?')) == NULL)
1144 goto out;
1145 *(p2++) = 0;
1146 if(minsize == 0)
1147 minsize = atoi(p);
1148 if(maxsize == 0)
1149 maxsize = atoi(p);
1150 p = p2 + 1;
1151 if(*(p++) != '?')
1152 goto out;
1153 termnum = 0;
1154 p2 = p;
1155 done = 0;
1156 while(!done)
1157 {
1158 if((*p2 == 0) || (*p2 == '$'))
1159 {
1160 if(*p2 == 0)
1161 done = 1;
1162 else
1163 *p2 = 0;
1164 if(*p)
1165 {
1166 if(!dotth && !strncmp(p, "TTH:", 4))
1167 {
1168 dotth = 1;
1169 if((buf = base32decode(p + 4, &buflen)) == NULL)
1170 goto out;
1171 if(buflen != 24)
1172 goto out;
1173 memcpy(hashtth, buf, 24);
1174 free(buf);
1175 } else {
1d85f24b 1176 if((terms[termnum] = icmbstowcs(p, hub->charset)) != NULL)
d3372da9 1177 termnum++;
1178 }
1179 }
1180 p = p2 + 1;
1181 if(termnum == 32)
1182 break;
1183 }
1184 p2++;
1185 }
1186
1187 node = shareroot->child;
1188 level = 0;
1189 for(i = 0; i < termnum; i++)
1190 tersat[i] = -1;
1191 satisfied = 0;
1192 while(1)
1193 {
1194 skipcheck = 0;
1195 if(node->f.b.type == FILE_REG)
1196 {
1197 if((minsize >= 0) && (node->size < minsize))
1198 skipcheck = 1;
1199 if((maxsize >= 0) && (node->size > maxsize))
1200 skipcheck = 1;
1201 }
1202 if(!skipcheck && dotth)
1203 {
1204 if((node->f.b.type != FILE_REG) || (node->f.b.hastth && memcmp(hashtth, node->hashtth, 24)))
1205 skipcheck = 1;
1206 }
1207 if(!skipcheck)
1208 {
1209 for(i = 0; i < termnum; i++)
1210 {
1211 if(tersat[i] >= 0)
1212 continue;
1213 if(wcsexists(node->name, terms[i]))
1214 {
1215 tersat[i] = level;
1216 satisfied++;
1217 } else if(node->child == NULL) {
1218 break;
1219 }
1220 }
1221 }
1222 if(!skipcheck && (satisfied == termnum))
1223 {
1d85f24b 1224 /* Use DCCHARSET in $Get paths until further researched... */
1225 if((buf = getdcpath(node, NULL, DCCHARSET)) != NULL)
d3372da9 1226 {
1227 if(node->f.b.hastth)
1228 {
1229 buf2 = base32encode(node->hashtth, 24);
1230 qstrf(dsk, "%s%s\005%i%sTTH:%.39s%s", prefix, buf, node->size, infix, buf2, postfix);
1231 free(buf2);
1232 } else {
1233 qstrf(dsk, "%s%s\005%i%s%s%s", prefix, buf, node->size, infix, hub->nativename, postfix);
1234 }
1235 free(buf);
1236 }
1237 }
1238 if((!skipcheck && (satisfied == termnum)) || (node->child == NULL))
1239 {
1240 while(node->next == NULL)
1241 {
1242 if((node = node->parent) == shareroot)
1243 break;
1244 level--;
1245 }
1246 if(node == shareroot)
1247 break;
1248 for(i = 0; i < termnum; i++)
1249 {
1250 if(tersat[i] >= level)
1251 {
1252 tersat[i] = -1;
1253 satisfied--;
1254 }
1255 }
1256 node = node->next;
1257 } else {
1258 node = node->child;
1259 level++;
1260 }
1261 }
1262
1263 hubhandleaction(sk, fn, cmd, args);
1264
1265 out:
1266 if(dsk != NULL)
1267 putsock(dsk);
1268 if(prefix != NULL)
1269 free(prefix);
1270 if(infix != NULL)
1271 free(infix);
1272 if(postfix != NULL)
1273 free(postfix);
1274 for(i = 0; (i < 32) && (terms[i] != NULL); i++)
1275 free(terms[i]);
1276}
1277
1278static void cmd_connecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1279{
1280 char *p;
1281 struct dchub *hub;
1282 struct socket *newsk;
1283 struct sockaddr_in addr;
1284
1285 hub = fn->data;
1286 if((p = strchr(args, ' ')) == NULL)
1287 return;
1288 *(p++) = 0;
1289 if(strcmp(args, hub->nativenick))
1290 return;
1291 addr.sin_family = AF_INET;
1292 args = p;
1293 if((p = strchr(args, ':')) == NULL)
1294 return;
1295 *(p++) = 0;
1296 addr.sin_port = htons(atoi(p));
1297 if(!inet_aton(args, &addr.sin_addr))
1298 return;
1299 newsk = netcsconn((struct sockaddr *)&addr, sizeof(addr), (void (*)(struct socket *, int, void *))peerconnect, fn);
1300 getfnetnode(fn);
1301 hubhandleaction(sk, fn, cmd, args);
1302}
1303
1304static void sendctm(struct socket *sk, char *nick)
1305{
1306 struct sockaddr *addr;
1307 socklen_t addrlen;
1308
1309 if(tcpsock == NULL)
1310 return;
1311 if(sockgetremotename(tcpsock, &addr, &addrlen) < 0)
1312 return;
1313 if(addr->sa_family == AF_INET)
1314 qstrf(sk, "$ConnectToMe %s %s|", nick, formataddress(addr, addrlen));
1315 else
1316 flog(LOG_WARNING, "Direct Connect TCP socket is suddenly not AF_INET, but %i", addr->sa_family);
1317 free(addr);
1318}
1319
1320static void cmd_revconnecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1321{
1322 struct dchub *hub;
1323 char *p;
1324
1325 hub = fn->data;
1326 if((p = strchr(args, ' ')) == NULL)
1327 return;
1328 *(p++) = 0;
1329 if(strcmp(p, hub->nativenick))
1330 return;
1331 sendctm(sk, args);
1332 expectpeer(args, fn);
1333 hubhandleaction(sk, fn, cmd, args);
1334}
1335
1336static void cmd_getnetinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1337{
1338 struct dchub *hub;
1339 struct fnetnode *node;
1340 int numhubs;
1341
1342 hub = fn->data;
1343 numhubs = 0;
1344 for(node = fnetnodes; node != NULL; node = node->next)
1345 {
1346 if(node->state == FNN_EST)
1347 numhubs++;
1348 }
1349 qstrf(sk, "$NetInfo %i$%i$%c$0|", confgetint("transfer", "slots"), numhubs, (tcpsock == NULL)?'P':'A');
1350 hubhandleaction(sk, fn, cmd, args);
1351}
1352
1353static void cmd_to(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1354{
1355 struct dchub *hub;
1356 char *p, *p2;
1357
1358 hub = fn->data;
1359 p = args;
1360 if((p2 = strchr(p, ' ')) == NULL)
1361 return;
1362 *(p2++) = 0;
1363 p = p2;
1364 if((p2 = strchr(p, ' ')) == NULL)
1365 return;
1366 *(p2++) = 0;
1367 if(strcmp(p, "From:"))
1368 return;
1369 p = p2;
1370 if((p2 = strstr(p, " $")) == NULL)
1371 return;
1372 *p2 = 0;
1373 p2 += 2;
1374 hubrecvchat(fn->sk, fn, p, p2);
1375 hubhandleaction(sk, fn, cmd, args);
1376}
1377
1378static void cmd_sr(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1379{
1380 struct dchub *hub;
d86b7a9f 1381 char *p, *p2, *buf;
d3372da9 1382 char *nick, *filename, *hubname;
1383 int size, slots;
d86b7a9f 1384 size_t buflen;
d3372da9 1385 struct srchres *sr;
1386 wchar_t *wnick, *wfile;
1387
1388 hub = fn->data;
1389 nick = p = args;
1390 if((p2 = strchr(p, ' ')) == NULL)
1391 return;
1392 *p2 = 0;
1393 p = p2 + 1;
1394 filename = p;
1395 if((p2 = strchr(p, 5)) == NULL)
1396 return;
1397 *p2 = 0;
1398 p = p2 + 1;
1399 if((p2 = strchr(p, ' ')) == NULL)
1400 return;
1401 *p2 = 0;
1402 size = atoi(p);
1403 p = p2 + 1;
1404 if((p2 = strchr(p, '/')) == NULL)
1405 return;
1406 *p2 = 0;
1407 slots = atoi(p);
1408 p = p2 + 1;
1409 if((p2 = strchr(p, 5)) == NULL)
1410 return;
1411 p = p2 + 1;
1412 hubname = p;
1413 if((p2 = strstr(p, " (")) == NULL)
1414 return;
1415 *p2 = 0;
1d85f24b 1416 if((wnick = icmbstowcs(nick, hub->charset)) == NULL)
d3372da9 1417 return;
1d85f24b 1418 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 1419 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
1420 {
1421 free(wnick);
1422 return;
1423 }
1424 sr = newsrchres(&dcnet, wfile, wnick);
1425 if(sr->peernick != NULL)
1426 free(sr->peernick);
1427 sr->peernick = swcsdup(wnick);
1428 sr->size = size;
1429 sr->slots = slots;
1430 free(wfile);
1431 free(wnick);
d86b7a9f 1432 if(!strncmp(hubname, "TTH:", 4))
1433 {
1434 if((buf = base32decode(hubname + 4, &buflen)) != NULL)
1435 {
1436 if(buflen == 24)
1437 sr->hash = newhash(L"TTH", 24, buf);
1438 free(buf);
1439 }
1440 }
d3372da9 1441 getfnetnode(sr->fn = fn);
1442 submitsrchres(sr);
1443 freesrchres(sr);
1444 hubhandleaction(sk, fn, cmd, args);
1445}
1446
1447static void cmd_usercommand(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1448{
1449 /* Do nothing for now. */
1450}
1451
48509089 1452static void cmd_getpass(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1453{
1454 struct dchub *hub;
1c4b02cd 1455 wchar_t *pw;
48509089 1456 char *mbspw;
1457
1458 hub = fn->data;
1c4b02cd 1459 pw = wpfind(fn->args, L"password");
1d85f24b 1460 if((pw == NULL) || ((mbspw = icwcstombs(pw, hub->charset)) == NULL))
48509089 1461 {
1462 killfnetnode(fn);
1463 return;
1464 }
1465 qstrf(sk, "$MyPass %s|", mbspw);
1466 free(mbspw);
fcd0627b 1467 fn->regstatus = FNNS_REG;
48509089 1468 hubhandleaction(sk, fn, cmd, args);
1469}
1470
c9b3ad74 1471static void cmd_logedin(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1472{
1473 struct dchub *hub;
1474
1475 hub = fn->data;
fcd0627b 1476 fn->regstatus = FNNS_OP;
c9b3ad74 1477 hubhandleaction(sk, fn, cmd, args);
1478}
1479
d3372da9 1480static void cmd_mynick(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1481{
9a2d6cb8 1482 struct dcexppeer *expect;
1c4b02cd 1483 struct dchub *hub;
9a2d6cb8 1484
d3372da9 1485 if(peer->nativename != NULL)
1486 free(peer->nativename);
1487 peer->nativename = sstrdup(args);
1488 if(peer->wcsname != NULL)
1489 free(peer->wcsname);
1d85f24b 1490 if((peer->wcsname = icmbstowcs(peer->nativename, peer->charset)) == NULL)
d3372da9 1491 {
1492 freedcpeer(peer);
1493 return;
1494 }
9a2d6cb8 1495 if(peer->accepted)
1496 {
1497 for(expect = expected; expect != NULL; expect = expect->next)
1498 {
1499 if(!strcmp(expect->nick, args))
1500 break;
1501 }
1502 if(expect == NULL)
1503 {
1504 peer->fn = NULL;
1505 } else {
1c4b02cd 1506 hub = expect->fn->data;
9a2d6cb8 1507 peer->fn = expect->fn;
1508 getfnetnode(peer->fn);
1c4b02cd 1509 peer->dcppemu = hub->dcppemu;
9a2d6cb8 1510 freeexppeer(expect);
1511 }
1512 }
d3372da9 1513}
1514
1515static void cmd_direction(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1516{
1517 char *p;
9a2d6cb8 1518 int mydir;
1519 struct transfer *transfer;
d3372da9 1520
1521 if((p = strchr(args, ' ')) == NULL)
1522 return;
1523 *p = 0;
1524 if(!strcmp(args, "Upload"))
9a2d6cb8 1525 mydir = TRNSD_DOWN;
d3372da9 1526 if(!strcmp(args, "Download"))
9a2d6cb8 1527 mydir = TRNSD_UP;
1528 if(peer->accepted)
1529 {
1530 if((peer->transfer == NULL) || (mydir != peer->direction))
1531 {
1532 freedcpeer(peer);
1533 return;
1534 }
1b14d3d8 1535 if(peer->direction == TRNSD_DOWN)
1536 requestfile(peer);
9a2d6cb8 1537 } else {
1538 if(peer->wcsname == NULL)
1539 {
1540 freedcpeer(peer);
1541 return;
1542 }
1543 peer->direction = mydir;
1544 if(peer->direction == TRNSD_UP)
1545 {
1546 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1547 } else {
1548 if((transfer = finddownload(peer->wcsname)) == NULL)
1549 {
1550 freedcpeer(peer);
1551 return;
1552 }
1553 transferattach(transfer, &dctransfer, peer);
1554 transfersetstate(transfer, TRNS_HS);
1555 }
1556 transfersetnick(transfer, peer->wcsname);
1557 peer->transfer = transfer;
1558 if(peer->extended)
1559 sendsupports(peer);
1560 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1561 if(peer->key != NULL)
1562 qstrf(sk, "$Key %s|", peer->key);
1563 if(peer->direction == TRNSD_DOWN)
1564 requestfile(peer);
1565 }
d3372da9 1566}
1567
1568static void cmd_peerlock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1569{
9a2d6cb8 1570 char *p, *key;
1571 struct transfer *transfer;
d3372da9 1572
1573 if((p = strchr(args, ' ')) == NULL)
1574 return;
1575 *p = 0;
1576 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
1577 peer->extended = 1;
9a2d6cb8 1578 key = dcmakekey(args);
1579 if(peer->accepted)
1580 {
1581 if(peer->wcsname == NULL)
1582 {
1583 freedcpeer(peer);
1584 return;
1585 }
1586 sendmynick(peer);
1587 sendpeerlock(peer);
1588 if(peer->extended)
1589 sendsupports(peer);
1590 if((transfer = finddownload(peer->wcsname)) == NULL)
1591 {
1592 peer->direction = TRNSD_UP;
1593 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1594 } else {
1595 peer->direction = TRNSD_DOWN;
1596 transferattach(transfer, &dctransfer, peer);
1597 transfersetstate(transfer, TRNS_HS);
1598 }
1599 transfersetnick(transfer, peer->wcsname);
1600 peer->transfer = transfer;
1601 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1602 qstrf(sk, "$Key %s|", key);
1603 } else {
1604 if(peer->key != NULL)
1605 free(peer->key);
1606 peer->key = key;
1607 }
d3372da9 1608}
1609
1610static void cmd_key(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1611{
9a2d6cb8 1612 /* NOP */
1613}
1614
1615static void startdl(struct dcpeer *peer)
1616{
1e9d82b1 1617 if(peer->timeout != NULL)
1618 canceltimer(peer->timeout);
9a2d6cb8 1619 peer->state = PEER_TRNS;
1620 transferstartdl(peer->transfer, peer->sk);
1621 peer->sk->readcb = (void (*)(struct socket *, void *))transread;
1622 peer->sk->errcb = (void (*)(struct socket *, int, void *))transerr;
1623}
1624
1625static void startul(struct dcpeer *peer)
1626{
1e9d82b1 1627 if(peer->timeout != NULL)
1628 canceltimer(peer->timeout);
9a2d6cb8 1629 peer->state = PEER_TRNS;
1630 transferstartul(peer->transfer, peer->sk);
1631 peer->sk->writecb = (void (*)(struct socket *, void *))transwrite;
d3372da9 1632}
1633
1634static void cmd_filelength(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1635{
1636 int size;
1fc81821 1637 struct transfer *transfer;
d3372da9 1638
1639 if(peer->transfer == NULL)
1640 {
1641 freedcpeer(peer);
1642 return;
1643 }
1644 size = atoi(args);
9a2d6cb8 1645 if(peer->transfer->size != size)
d3372da9 1646 {
d3372da9 1647 transfersetsize(peer->transfer, size);
1fc81821 1648 transfer = peer->transfer;
d3372da9 1649 freedcpeer(peer);
1fc81821 1650 trytransferbypeer(transfer->fnet, transfer->peerid);
d3372da9 1651 return;
1652 }
9a2d6cb8 1653 startdl(peer);
1654 qstr(peer->sk, "$Send|");
d3372da9 1655}
1656
1657static void cmd_error(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1658{
df873cd0 1659 if(peer->fetchingtthl)
1660 {
1661 peer->fetchingtthl = 0;
1662 peer->notthl = 1;
1663 requestfile(peer);
1664 return;
1665 }
d3372da9 1666 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1667 {
1668 transferseterror(peer->transfer, TRNSE_NOTFOUND);
1669 resettransfer(peer->transfer);
1670 return;
1671 }
1672 freedcpeer(peer);
1673}
1674
1675static void cmd_maxedout(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1676{
1677 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1678 {
1679 transferseterror(peer->transfer, TRNSE_NOSLOTS);
1680 resettransfer(peer->transfer);
1681 return;
1682 }
1683 freedcpeer(peer);
1684}
1685
1686static struct
1687{
1688 char *name;
1689 char **file;
1690 void (*func)(void);
1691} lists[] =
1692{
1693 {"MyList.DcLst", &hmlistname, updatehmlist},
1694 {"files.xml", &xmllistname, updatexmllist},
1695 {"files.xml.bz2", &xmlbz2listname, updatexmlbz2list},
1696 {NULL, NULL}
1697};
1698
1699static int openfilelist(char *name)
1700{
1701 int i, fd;
1702 int errnobak;
1703
1704 for(i = 0; lists[i].name != NULL; i++)
1705 {
1706 if(!strcmp(name, lists[i].name))
1707 break;
1708 }
1709 errno = 0;
1710 if(lists[i].name == NULL)
1711 return(-1);
1712 fd = -1;
1713 if((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0))
1714 lists[i].func();
1715 if((fd < 0) && ((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0)))
1716 {
1717 errnobak = errno;
1718 flog(LOG_ERR, "could not open filelist tempfile: %s", strerror(errno));
1719 errno = errnobak;
1720 return(-1);
1721 }
1722 return(fd);
1723}
1724
1725static struct sharecache *findbytth(char *tth32)
1726{
1727 char *buf;
1728 size_t buflen;
1729 struct sharecache *node;
1730
1731 if((buf = base32decode(tth32, &buflen)) == NULL)
1732 return(NULL);
1733 if(buflen != 24)
1734 {
1735 free(buf);
1736 return(NULL);
1737 }
1738 for(node = shareroot->child; node != NULL; node = nextscnode(node))
1739 {
1740 if(node->f.b.hastth && !memcmp(node->hashtth, buf, 24))
1741 break;
1742 }
1743 free(buf);
1744 return(node);
1745}
1746
1747static struct sharecache *resdcpath(char *path, char *charset, char sep)
1748{
1749 struct sharecache *node;
1750 char *p, *p2;
1751
1752 node = shareroot;
1753 p = path;
1754 while(p != NULL)
1755 {
1756 if((p2 = strchr(p, sep)) != NULL)
1757 *(p2++) = 0;
1758 if((node = findcache(node, icsmbstowcs(p, charset, L""))) == NULL)
1759 return(NULL);
1760 p = p2;
1761 }
1762 return(node);
1763}
1764
1765static void cmd_get(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1766{
1767 int offset;
1768 char *p, *buf;
1769 wchar_t *buf2;
1770 struct sharecache *node;
1771 struct socket *lesk;
1772 int fd;
1773 struct stat sb;
1774
1775 if(peer->transfer == NULL)
1776 {
1777 freedcpeer(peer);
1778 return;
1779 }
1780 if((p = strchr(args, '$')) == NULL)
1781 {
1782 freedcpeer(peer);
1783 return;
1784 }
1785 *(p++) = 0;
1786 if((offset = (atoi(p) - 1)) < 0)
1787 {
1788 freedcpeer(peer);
1789 return;
1790 }
1791 if(((fd = openfilelist(args)) < 0) && (errno != 0))
1792 {
1793 qstr(sk, "$Error Could not send file list|");
1794 freedcpeer(peer);
1795 return;
1796 } else if(fd >= 0) {
1797 if((buf2 = icsmbstowcs(args, DCCHARSET, NULL)) != NULL)
1798 transfersetpath(peer->transfer, buf2);
f00d7432 1799 peer->transfer->flags.b.minislot = 1;
d3372da9 1800 }
1801 if(fd < 0)
1802 {
1d85f24b 1803 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 1804 if((node = resdcpath(args, DCCHARSET, '\\')) == NULL)
1805 {
1806 qstrf(sk, "$Error File not in share|");
1807 freedcpeer(peer);
1808 return;
1809 }
1810 if((fd = opensharecache(node)) < 0)
1811 {
1812 qstrf(sk, "$Error %s|", strerror(errno));
1813 freedcpeer(peer);
1814 return;
1815 }
1816 buf = getfspath(node);
1817 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1818 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1819 else
1820 transfersetpath(peer->transfer, buf2);
1821 free(buf);
1822 }
1823 if(fstat(fd, &sb) < 0)
1824 {
1825 close(fd);
1826 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1827 qstrf(sk, "$Error|");
1828 freedcpeer(peer);
1829 return;
1830 }
f00d7432 1831 if(sb.st_size < 65536)
1832 peer->transfer->flags.b.minislot = 1;
1833 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
565006d1 1834 close(fd);
f00d7432 1835 qstr(sk, "$MaxedOut|");
1836 freedcpeer(peer);
1837 return;
1838 }
d3372da9 1839 if((offset != 0) && (lseek(fd, offset, SEEK_SET) < 0))
1840 {
1841 close(fd);
1842 qstrf(sk, "$Error Offset out of range|");
1843 freedcpeer(peer);
1844 return;
1845 }
1846 lesk = wrapsock(fd);
1847 transferprepul(peer->transfer, sb.st_size, offset, -1, lesk);
1848 putsock(lesk);
1849 qstrf(sk, "$FileLength %i|", peer->transfer->size);
d3372da9 1850}
1851
1852static void cmd_send(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1853{
1854 if(peer->transfer == NULL)
1855 {
1856 freedcpeer(peer);
1857 return;
1858 }
1859 if(peer->transfer->localend == NULL)
1860 {
1861 freedcpeer(peer);
1862 return;
1863 }
1864 peer->ptclose = 1;
9a2d6cb8 1865 startul(peer);
d3372da9 1866}
1867
1868static void cmd_supports(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1869{
1870 int i;
1871 char *p, *p2;
1872 char **arr;
1873 size_t arrsize, arrdata;
1874
1875 if(peer->supports != NULL)
1876 {
1877 for(i = 0; peer->supports[i] != NULL; i++)
1878 free(peer->supports[i]);
1879 free(peer->supports);
1880 }
1881 arr = NULL;
1882 arrsize = arrdata = 0;
1883 p = args;
1884 do
1885 {
1886 if((p2 = strchr(p, ' ')) != NULL)
1887 *(p2++) = 0;
1888 if(*p == 0)
1889 continue;
1890 addtobuf(arr, sstrdup(p));
1891 } while((p = p2) != NULL);
1892 addtobuf(arr, NULL);
1893 peer->supports = arr;
d3372da9 1894}
1895
1896static void cmd_getblock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1897{
1898 int fd;
1899 char *p, *p2;
1900 int start, numbytes;
1901 char *charset, *buf;
1902 wchar_t *buf2;
1903 struct sharecache *node;
1904 struct stat sb;
1905 struct socket *lesk;
1906
1907 if(peer->transfer == NULL)
1908 {
1909 freedcpeer(peer);
1910 return;
1911 }
1912 p = args;
1913 if((p2 = strchr(p, ' ')) == NULL)
1914 {
1915 freedcpeer(peer);
1916 return;
1917 }
1918 *(p2++) = 0;
1919 start = atoi(p);
1920 p = p2;
1921 if((p2 = strchr(p, ' ')) == NULL)
1922 {
1923 freedcpeer(peer);
1924 return;
1925 }
1926 *(p2++) = 0;
1927 numbytes = atoi(p);
1928 p = p2;
1929 if(!strcmp(cmd, "$UGetBlock") || !strcmp(cmd, "$UGetZBlock"))
1930 charset = "UTF-8";
1931 else
1d85f24b 1932 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 1933 charset = DCCHARSET;
1934 if(!strcmp(cmd, "$GetZBlock") || !strcmp(cmd, "$UGetZBlock"))
1935 initcompress(peer, CPRS_ZLIB);
1936 if(((fd = openfilelist(p)) < 0) && (errno != 0))
1937 {
1938 qstr(sk, "$Error Could not send file list|");
1939 return;
1940 } else if(fd >= 0) {
1941 if((buf2 = icsmbstowcs(args, charset, NULL)) != NULL)
1942 transfersetpath(peer->transfer, buf2);
f00d7432 1943 peer->transfer->flags.b.minislot = 1;
d3372da9 1944 }
1945 if(fd < 0)
1946 {
d3372da9 1947 if((node = resdcpath(p, charset, '\\')) == NULL)
1948 {
1949 qstr(sk, "$Error File not in cache|");
1950 return;
1951 }
1952 if((fd = opensharecache(node)) < 0)
1953 {
1954 qstrf(sk, "$Error %s|", strerror(errno));
1955 return;
1956 }
1957 buf = getfspath(node);
1958 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1959 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1960 else
1961 transfersetpath(peer->transfer, buf2);
1962 free(buf);
1963 }
1964 if(fstat(fd, &sb) < 0)
1965 {
1966 close(fd);
1967 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1968 qstr(sk, "$Error|");
1969 return;
1970 }
f00d7432 1971 if(sb.st_size < 65536)
1972 peer->transfer->flags.b.minislot = 1;
1973 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
565006d1 1974 close(fd);
f00d7432 1975 qstr(sk, "$MaxedOut|");
1976 return;
1977 }
d3372da9 1978 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
1979 {
1980 close(fd);
1981 qstr(sk, "$Error Offset out of range|");
1982 return;
1983 }
1984 if((numbytes < 0) || (start + numbytes > sb.st_size))
1985 numbytes = sb.st_size - start;
1986 lesk = wrapsock(fd);
1987 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
1988 putsock(lesk);
1989 qstrf(sk, "$Sending %i|", numbytes);
9a2d6cb8 1990 startul(peer);
d3372da9 1991}
1992
1993static void cmd_adcget(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1994{
1995 int i;
1996 char **argv, *buf;
1997 int start, numbytes;
1998 struct sharecache *node;
1999 struct stat sb;
2000 struct socket *lesk;
2001 wchar_t *wbuf;
2002 int fd;
2003
2004 if(peer->transfer == NULL)
2005 {
2006 freedcpeer(peer);
2007 return;
2008 }
2009 if((argv = parseadc(args)) == NULL)
2010 {
2011 freedcpeer(peer);
2012 return;
2013 }
2014 if(parrlen(argv) < 4)
2015 {
2016 freedcpeer(peer);
2017 goto out;
2018 }
2019 start = atoi(argv[2]);
2020 numbytes = atoi(argv[3]);
2021 node = NULL;
2022 fd = -1;
2023 if(((fd = openfilelist(argv[1])) < 0) && (errno != 0))
2024 {
2025 qstr(sk, "$Error Could not send file list|");
2026 goto out;
2027 } else if(fd >= 0) {
2028 if((wbuf = icsmbstowcs(argv[1], "UTF-8", NULL)) != NULL)
2029 transfersetpath(peer->transfer, wbuf);
f00d7432 2030 peer->transfer->flags.b.minislot = 1;
d3372da9 2031 }
2032 if(fd < 0)
2033 {
d3372da9 2034 if(!strncmp(argv[1], "TTH/", 4))
2035 {
2036 if((node = findbytth(argv[1] + 4)) == NULL)
2037 {
2038 qstr(sk, "$Error File not in cache|");
2039 goto out;
2040 }
2041 } else {
9a2d6cb8 2042 if((node = resdcpath((argv[1][0] == '/')?(argv[1] + 1):(argv[1]), "UTF-8", '/')) == NULL)
d3372da9 2043 {
2044 qstr(sk, "$Error File not in cache|");
2045 goto out;
2046 }
2047 }
2048 if((fd = opensharecache(node)) < 0)
2049 {
2050 qstrf(sk, "$Error %s|", strerror(errno));
2051 goto out;
2052 }
2053 buf = getfspath(node);
2054 if((wbuf = icsmbstowcs(buf, NULL, NULL)) == NULL)
2055 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
2056 else
2057 transfersetpath(peer->transfer, wbuf);
2058 free(buf);
2059 }
2060 if(!strcmp(argv[0], "file"))
2061 {
2062 for(i = 4; argv[i] != NULL; i++)
2063 {
2064 if(!strcmp(argv[i], "ZL1"))
2065 initcompress(peer, CPRS_ZLIB);
2066 }
2067 if(fstat(fd, &sb) < 0)
2068 {
2069 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
2070 qstr(sk, "$Error|");
2071 goto out;
2072 }
f00d7432 2073 if(sb.st_size < 65536)
2074 peer->transfer->flags.b.minislot = 1;
2075 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
2076 qstr(sk, "$MaxedOut|");
2077 goto out;
2078 }
d3372da9 2079 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
2080 {
2081 qstr(sk, "$Error Offset out of range|");
2082 goto out;
2083 }
2084 if((numbytes < 0) || (start + numbytes > sb.st_size))
2085 numbytes = sb.st_size - start;
2086 lesk = wrapsock(fd);
2087 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2088 putsock(lesk);
2089 fd = -1;
2090 qstr(sk, "$ADCSND");
2091 sendadc(sk, "file");
2092 sendadc(sk, argv[1]);
2093 sendadcf(sk, "%i", start);
2094 sendadcf(sk, "%i", numbytes);
2095 if(peer->compress == CPRS_ZLIB)
2096 sendadc(sk, "ZL1");
2097 qstr(sk, "|");
9a2d6cb8 2098 startul(peer);
d3372da9 2099 } else if(!strcmp(argv[0], "tthl")) {
2100 /*
2101 * XXX: Implement full TTHL support.
2102 *
2103 * In the meantime, this is better than nothing, since it at
2104 * least allows fetching of the TTH root if it isn't already
2105 * known.
2106 */
2107 if(node == NULL)
2108 {
2109 qstr(sk, "$Error no TTHL data for virtual files|");
2110 goto out;
2111 }
2112 qstr(sk, "$ADCSND");
2113 sendadc(sk, "tthl");
2114 sendadc(sk, argv[1]);
2115 sendadc(sk, "0");
2116 sendadc(sk, "24");
2117 qstr(sk, "|");
2118 sockqueue(sk, node->hashtth, 24);
2119 } else {
2120 qstr(sk, "$Error Namespace not implemented|");
2121 goto out;
2122 }
d3372da9 2123
2124 out:
2125 if(fd >= 0)
2126 close(fd);
2127 freeparr(argv);
2128}
2129
9a2d6cb8 2130static void handletthl(struct dcpeer *peer)
2131{
2132 char buf[24];
2133
2134 while(peer->inbufdata >= 24)
2135 {
2136 pushtigertree(&peer->tth, peer->inbuf);
2137 memmove(peer->inbuf, peer->inbuf + 24, peer->inbufdata -= 24);
e52006fe 2138 peer->curread += 24;
9a2d6cb8 2139 }
e52006fe 2140 if(peer->curread >= peer->totalsize)
9a2d6cb8 2141 {
1e9d82b1 2142 if(peer->timeout == NULL)
2143 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
9a2d6cb8 2144 peer->state = PEER_CMD;
2145 synctigertree(&peer->tth);
2146 restigertree(&peer->tth, buf);
2147 transfersethash(peer->transfer, newhash(L"TTH", 24, buf));
2148 requestfile(peer);
2149 }
2150}
2151
2152static void cmd_adcsnd(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2153{
2154 char **argv;
2155 int start, numbytes;
2156
2157 if(peer->transfer == NULL)
2158 {
2159 freedcpeer(peer);
2160 return;
2161 }
2162 if((argv = parseadc(args)) == NULL)
2163 {
2164 freedcpeer(peer);
2165 return;
2166 }
2167 if(parrlen(argv) < 4)
2168 {
2169 freedcpeer(peer);
2170 goto out;
2171 }
2172 start = atoi(argv[2]);
2173 numbytes = atoi(argv[3]);
2174 if(!strcmp(argv[0], "tthl"))
2175 {
2176 if((start != 0) || (numbytes % 24 != 0))
2177 {
2178 /* Weird. Bail out. */
2179 freedcpeer(peer);
2180 goto out;
2181 }
1e9d82b1 2182 if(peer->timeout != NULL)
2183 canceltimer(peer->timeout);
9a2d6cb8 2184 peer->state = PEER_TTHL;
2185 peer->totalsize = numbytes;
2186 peer->curread = 0;
df873cd0 2187 peer->fetchingtthl = 0;
9a2d6cb8 2188 inittigertree(&peer->tth);
2189 handletthl(peer);
2190 } else if(!strcmp(argv[0], "file")) {
2191 if(start != peer->transfer->curpos)
2192 {
2193 freedcpeer(peer);
2194 goto out;
2195 }
2196 if(start + numbytes != peer->transfer->size)
2197 {
2198 transfersetsize(peer->transfer, start + numbytes);
2199 freedcpeer(peer);
2200 goto out;
2201 }
2202 startdl(peer);
e52006fe 2203 if(peer->inbufdata > 0)
2204 {
2205 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2206 peer->inbufdata = 0;
2207 transread(sk, peer);
2208 }
9a2d6cb8 2209 } else {
2210 /* We certainly didn't request this...*/
2211 freedcpeer(peer);
2212 goto out;
2213 }
2214
2215 out:
2216 freeparr(argv);
2217}
2218
2219static void cmd_sending(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2220{
2221 int numbytes;
2222
2223 if(peer->transfer == NULL)
2224 {
2225 freedcpeer(peer);
2226 return;
2227 }
2228 numbytes = atoi(args);
2229 if(peer->transfer->size - peer->transfer->curpos != numbytes)
2230 {
2231 transfersetsize(peer->transfer, peer->transfer->curpos + numbytes);
2232 freedcpeer(peer);
2233 return;
2234 }
2235 startdl(peer);
0d8c93cb 2236 if(peer->inbufdata > 0)
2237 {
2238 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2239 peer->inbufdata = 0;
2240 transread(sk, peer);
2241 }
9a2d6cb8 2242}
2243
d3372da9 2244/*
2245Hub skeleton:
2246static void cmd_(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
2247{
2248 struct dchub *hub;
2249
2250 hub = fn->data;
2251 hubhandleaction(sk, fn, cmd, args);
2252}
2253
2254Peer skeleton:
2255static void cmd_(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2256{
d3372da9 2257}
2258
2259*/
2260
2261static int hubreqconn(struct fnetpeer *peer)
2262{
2263 struct dchub *hub;
2264 char *mbsnick;
2265
2266 if((peer->fn->state != FNN_EST) || (peer->fn->fnet != &dcnet))
2267 {
2268 errno = EINVAL;
2269 return(1);
2270 }
2271 if((hub = peer->fn->data) == NULL)
2272 {
2273 errno = EFAULT;
2274 return(1);
2275 }
1d85f24b 2276 if((mbsnick = icwcstombs(peer->id, hub->charset)) == NULL)
d3372da9 2277 return(1); /* Shouldn't happen, of course, but who knows... */
2278 if(tcpsock != NULL)
2279 {
2280 sendctm(peer->fn->sk, mbsnick);
2281 expectpeer(mbsnick, peer->fn);
2282 } else {
2283 qstrf(peer->fn->sk, "$RevConnectToMe %s %s|", hub->nativenick, mbsnick);
2284 }
2285 free(mbsnick);
2286 return(0);
2287}
2288
2289static int hubsendchat(struct fnetnode *fn, int public, wchar_t *to, wchar_t *string)
2290{
2291 struct dchub *hub;
2292 char *mbsstring, *mbsto;
2293
2294 hub = fn->data;
1d85f24b 2295 if((mbsto = icwcstombs(to, hub->charset)) == NULL)
d3372da9 2296 {
2297 errno = EILSEQ;
2298 return(1);
2299 }
1d85f24b 2300 if((mbsstring = icwcstombs(string, hub->charset)) == NULL)
d3372da9 2301 {
2302 errno = EILSEQ;
2303 return(1);
2304 }
2305 if((strchr(mbsto, '|') != NULL) || (strchr(mbsto, ' ') != NULL))
2306 {
2307 free(mbsto);
2308 free(mbsstring);
2309 errno = ESRCH;
2310 return(1);
2311 }
2312 if(strchr(mbsstring, '|') != NULL)
2313 {
2314 free(mbsto);
2315 free(mbsstring);
2316 errno = EILSEQ;
2317 return(1);
2318 }
2319 if(public)
2320 {
2321 if(*to == L'\0')
2322 {
2323 qstrf(fn->sk, "<%s> %s|", hub->nativenick, mbsstring);
2324 } else {
2325 qstrf(fn->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2326 }
2327 } else {
2328 qstrf(fn->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2329 }
2330 free(mbsto);
2331 free(mbsstring);
2332 return(0);
2333}
2334
2335static void findsizelimit(struct sexpr *sexpr, int *min, int *max)
2336{
2337 int minl, maxl, minr, maxr, retmin, retmax;
2338
2339 switch(sexpr->op)
2340 {
2341 case SOP_AND:
2342 findsizelimit(sexpr->l, &minl, &maxl);
2343 findsizelimit(sexpr->r, &minr, &maxr);
2344 retmin = (minl > minr)?minl:minr;
2345 if((maxl != -1) && (maxr != -1))
2346 retmax = (maxl < maxr)?maxl:maxr;
2347 else if(maxl != -1)
2348 retmax = maxl;
2349 else if(maxr != -1)
2350 retmax = maxr;
2351 else
2352 retmax = -1;
2353 break;
2354 case SOP_OR:
2355 findsizelimit(sexpr->l, &minl, &maxl);
2356 findsizelimit(sexpr->r, &minr, &maxr);
2357 retmin = (minl < minr)?minl:minr;
2358 if((maxl == -1) || (maxr == -1))
2359 retmax = -1;
2360 else
2361 retmax = (maxl > maxr)?maxl:maxr;
2362 break;
2363 case SOP_NOT:
2364 findsizelimit(sexpr->l, &minl, &maxl);
2365 if((minl == 0) && (maxl == -1)) /* Interval is unspecified */
2366 {
2367 retmin = 0;
2368 retmax = -1;
2369 } else if((minl == 0) && (maxl != -1)) {
2370 retmin = maxl + 1;
2371 retmax = -1;
2372 } else if((minl != 0) && (maxl == -1)) {
2373 retmin = 0;
2374 retmax = minl - 1;
2375 } else { /* This would yield two seperate intervals, which DC cannot handle */
2376 retmin = 0;
2377 retmax = -1;
2378 }
2379 case SOP_SIZELT:
2380 retmin = 0;
2381 retmax = sexpr->d.n - 1;
2382 break;
2383 case SOP_SIZEEQ:
2384 retmin = sexpr->d.n;
2385 retmax = sexpr->d.n;
2386 break;
2387 case SOP_SIZEGT:
2388 retmin = sexpr->d.n + 1;
2389 retmax = -1;
2390 break;
2391 default:
2392 retmin = 0;
2393 retmax = -1;
2394 break;
2395 }
2396 if(min != NULL)
2397 *min = retmin;
2398 if(max != NULL)
2399 *max = retmax;
2400}
2401
9d8cf743 2402static struct hash *findsehash(struct sexpr *sexpr)
2403{
2404 struct hash *h1, *h2;
2405
2406 switch(sexpr->op)
2407 {
2408 case SOP_AND:
2409 if((h1 = findsehash(sexpr->l)) != NULL)
2410 return(h1);
2411 if((h1 = findsehash(sexpr->r)) != NULL)
2412 return(h1);
2413 break;
2414 case SOP_OR:
2415 h1 = findsehash(sexpr->l);
2416 h2 = findsehash(sexpr->r);
2417 if(hashcmp(h1, h2))
2418 return(h1);
2419 break;
2420 case SOP_HASHIS:
2421 if(!wcscmp(sexpr->d.hash->algo, L"TTH"))
2422 return(sexpr->d.hash);
2423 default:
2424 break;
2425 }
2426 return(NULL);
2427}
2428
d3372da9 2429static int hubsearch(struct fnetnode *fn, struct search *srch, struct srchfnnlist *ln)
2430{
2431 struct dchub *hub;
2432 struct wcslist *list, *cur;
2433 char *sstr, *buf, *p;
2434 size_t sstrsize, sstrdata;
2435 struct sockaddr *name;
2436 socklen_t namelen;
2437 int minsize, maxsize;
9d8cf743 2438 struct hash *hash;
d3372da9 2439
2440 hub = fn->data;
2441 if((fn->state != FNN_EST) || (fn->sk == NULL) || (fn->sk->state != SOCK_EST))
2442 return(1);
2443 list = findsexprstrs(srch->sexpr);
2444 findsizelimit(srch->sexpr, &minsize, &maxsize);
9d8cf743 2445 hash = findsehash(srch->sexpr);
d3372da9 2446 if((minsize != 0) && (maxsize != -1))
2447 {
2448 /* Choose either minsize or maxsize by trying to determine
2449 * which choice will be most restrictive. The result can be
2450 * approximative at best anyway, so don't try too hard... */
2451 if((50000000 - maxsize) > (minsize - 50000000))
2452 minsize = 0;
2453 else
2454 maxsize = -1;
2455 }
d3372da9 2456 sstr = NULL;
2457 sstrsize = sstrdata = 0;
9d8cf743 2458 if((hash != NULL) && (hash->len == 24))
d3372da9 2459 {
9d8cf743 2460 /* Prioritize hash searches above all else */
2461 bufcat(sstr, "F?T?0?9?TTH:", 12);
2462 buf = base32encode(hash->buf, hash->len);
2463
2464 bufcat(sstr, buf, 39);
2465 free(buf);
2466 } else {
2467 if(minsize != 0)
d3372da9 2468 {
9d8cf743 2469 sizebuf2(sstr, sstrdata + 32, 1);
fe42d689 2470 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?F?%i?1?", minsize);
9d8cf743 2471 } else if(maxsize != -1) {
2472 sizebuf2(sstr, sstrdata + 32, 1);
fe42d689 2473 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?T?%i?1?", maxsize);
9d8cf743 2474 } else {
2475 bufcat(sstr, "F?F?0?1?", 8);
2476 }
2477 if(list != NULL)
2478 {
2479 for(cur = list; cur != NULL; cur = cur->next)
d3372da9 2480 {
1d85f24b 2481 /* Use DCCHARSET in $Get paths until further researched... */
9d8cf743 2482 if((buf = icwcstombs(cur->str, DCCHARSET)) == NULL)
2483 {
2484 /* Can't find anything anyway if the search expression
2485 * requires characters outside DC's charset. There's
2486 * nothing technically wrong with the search itself,
2487 * however, so return success. This should be
2488 * considered as an optimization. */
2489 freesl(&list);
2490 if(sstr != NULL)
2491 free(sstr);
2492 return(0);
2493 }
2494 if(cur != list)
2495 addtobuf(sstr, '$');
2496 /*
2497 * It probably doesn't hurt if buf contains any extra
2498 * dollar signs - it will just result in extra search
2499 * terms, and the extraneous results will be filtered by
2500 * the search layer anyway. It hurts if it contains any
2501 * pipes, though, so let's sell them for money.
2502 */
2503 for(p = buf; *p; p++)
2504 {
2505 if(*p == '|')
2506 *p = '$';
2507 }
2508 bufcat(sstr, buf, strlen(buf));
2509 free(buf);
d3372da9 2510 }
9d8cf743 2511 } else {
2512 /* Will match all files... :-/ */
2513 addtobuf(sstr, '.');
d3372da9 2514 }
d3372da9 2515 }
2516 addtobuf(sstr, 0);
2517 if(tcpsock != NULL)
2518 {
2519 if(sockgetremotename(udpsock, &name, &namelen) < 0)
2520 {
2521 flog(LOG_WARNING, "cannot get address of UDP socket");
2522 } else {
9d8cf743 2523 qstrf(fn->sk, "$Search %s %s|", formataddress(name, namelen), sstr);
d3372da9 2524 free(name);
2525 }
2526 } else {
9d8cf743 2527 qstrf(fn->sk, "$Search Hub:%s %s|", hub->nativenick, sstr);
d3372da9 2528 }
2529 free(sstr);
2530 freesl(&list);
2531 fn->lastsrch = time(NULL);
2532 return(0);
2533}
2534
2535#undef skipcmd
2536#undef qstr
2537#undef qstrf
2538
2539#define cc(c) ((void (*)(struct socket *, void *, char *, char *))(c))
2540struct command hubcmds[] =
2541{
2542 {"$Lock", cc(cmd_lock)},
2543 {"$HubName", cc(cmd_hubname)},
2544 {"$Hello", cc(cmd_hello)},
2545 {"$Quit", cc(cmd_quit)},
2546 {"$NickList", cc(cmd_nicklist)},
2547 {"$OpList", cc(cmd_oplist)},
2548 {"$MyINFO", cc(cmd_myinfo)},
2549 {"$ForceMove", cc(cmd_forcemove)},
2550 {"$Search", cc(cmd_search)},
2551 {"$MultiSearch", cc(cmd_search)},
2552 {"$ConnectToMe", cc(cmd_connecttome)},
2553 {"$RevConnectToMe", cc(cmd_revconnecttome)},
2554 {"$GetNetInfo", cc(cmd_getnetinfo)},
2555 {"$To:", cc(cmd_to)},
2556 {"$SR", cc(cmd_sr)},
2557 {"$UserCommand", cc(cmd_usercommand)},
48509089 2558 {"$GetPass", cc(cmd_getpass)},
c9b3ad74 2559 {"$LogedIn", cc(cmd_logedin)}, /* sic */
d3372da9 2560 {NULL, NULL}
2561};
2562
2563struct command peercmds[] =
2564{
2565 {"$MyNick", cc(cmd_mynick)},
2566 {"$Lock", cc(cmd_peerlock)},
2567 {"$Direction", cc(cmd_direction)},
2568 {"$Key", cc(cmd_key)},
2569 {"$FileLength", cc(cmd_filelength)},
2570 {"$Error", cc(cmd_error)},
2571 {"$MaxedOut", cc(cmd_maxedout)},
2572 {"$Get", cc(cmd_get)},
2573 {"$Send", cc(cmd_send)},
2574 {"$Supports", cc(cmd_supports)},
2575 {"$GetBlock", cc(cmd_getblock)},
2576 {"$UGetBlock", cc(cmd_getblock)},
2577 {"$GetZBlock", cc(cmd_getblock)},
2578 {"$UGetZBlock", cc(cmd_getblock)},
2579 {"$ADCGET", cc(cmd_adcget)},
9a2d6cb8 2580 {"$ADCSND", cc(cmd_adcsnd), 1},
2581 {"$Sending", cc(cmd_sending), 1},
d3372da9 2582 {NULL, NULL}
2583};
2584#undef cc
2585
2586static void dctransdetach(struct transfer *transfer, struct dcpeer *peer)
2587{
2588 CBUNREG(transfer, trans_filterout, peer);
2589 if(peer->freeing)
2590 return;
2591 peer->transfer = NULL;
2592 freedcpeer(peer);
2593}
2594
2595static void dctransgotdata(struct transfer *transfer, struct dcpeer *peer)
2596{
2597 int ret;
2598 void *buf;
2599 char outbuf[1024];
2600 z_stream *cstr;
2601 size_t bufsize;
2602
2603 if((peer->state == PEER_TRNS) || (peer->state == PEER_SYNC))
2604 {
2605 if(sockqueuesize(peer->sk) < 65536)
2606 {
2607 if((buf = transfergetdata(transfer, &bufsize)) != NULL)
2608 {
2609 if(peer->compress == CPRS_NONE)
2610 {
2611 sockqueue(peer->sk, buf, bufsize);
2612 } else if(peer->compress == CPRS_ZLIB) {
2613 cstr = peer->cprsdata;
2614 cstr->next_in = buf;
2615 cstr->avail_in = bufsize;
2616 while(cstr->avail_in > 0)
2617 {
2618 cstr->next_out = outbuf;
2619 cstr->avail_out = sizeof(outbuf);
2620 if((ret = deflate(cstr, 0)) != Z_OK)
2621 {
2622 flog(LOG_WARNING, "bug? deflate() did not return Z_OK (but rather %i)", ret);
2623 freedcpeer(peer);
2624 return;
2625 }
2626 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2627 }
2628 }
2629 free(buf);
2630 }
2631 if(peer->state == PEER_SYNC)
2632 {
2633 if(peer->compress == CPRS_ZLIB)
2634 {
2635 cstr = peer->cprsdata;
2636 cstr->next_in = NULL;
2637 cstr->avail_in = 0;
2638 do
2639 {
2640 cstr->next_out = outbuf;
2641 cstr->avail_out = sizeof(outbuf);
2642 ret = deflate(cstr, Z_FINISH);
2643 if((ret != Z_OK) && (ret != Z_STREAM_END))
2644 {
2645 flog(LOG_WARNING, "bug? deflate(Z_FINISH) did not return Z_OK (but rather %i)", ret);
2646 freedcpeer(peer);
2647 return;
2648 }
2649 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2650 } while(ret != Z_STREAM_END);
2651 }
2652 if(peer->ptclose)
2653 {
2654 freedcpeer(peer);
2655 } else {
1e9d82b1 2656 if(peer->timeout == NULL)
2657 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 2658 peer->state = PEER_CMD;
2659 endcompress(peer);
2660 transfersetstate(transfer, TRNS_HS);
2661 socksettos(peer->sk, confgetint("fnet", "fnptos"));
bfc261fe 2662 transfer->flags.b.minislot = 0;
d3372da9 2663 peer->sk->writecb = NULL;
2664 }
2665 }
2666 }
2667 }
2668}
2669
2670static void dctransendofdata(struct transfer *transfer, struct dcpeer *peer)
2671{
2672 peer->state = PEER_SYNC;
2673 dctransgotdata(transfer, peer);
2674}
2675
2676static void dcwantdata(struct transfer *transfer, struct dcpeer *peer)
2677{
2678 if(transferdatasize(transfer) < 65536)
2679 peer->sk->ignread = 0;
2680}
2681
2682static void transread(struct socket *sk, struct dcpeer *peer)
2683{
2684 void *buf;
2685 size_t bufsize;
2686 struct transfer *transfer;
2687
2688 if((buf = sockgetinbuf(sk, &bufsize)) == NULL)
2689 return;
2690 if(peer->transfer == NULL)
2691 {
2692 free(buf);
2693 freedcpeer(peer);
2694 return;
2695 }
2696 transferputdata(peer->transfer, buf, bufsize);
2697 free(buf);
2698 if(peer->transfer->curpos >= peer->transfer->size)
2699 {
2700 transfer = peer->transfer;
2701 transferdetach(transfer);
2702 transferendofdata(transfer);
2703 return;
2704 }
2705 if(transferdatasize(peer->transfer) > 65535)
2706 sk->ignread = 1;
2707}
2708
2709static void transerr(struct socket *sk, int err, struct dcpeer *peer)
2710{
2711 struct transfer *transfer;
2712
2713 if((transfer = peer->transfer) == NULL)
2714 {
2715 freedcpeer(peer);
2716 return;
2717 }
2718 transferdetach(transfer);
2719 transferendofdata(transfer);
2720}
2721
2722static void transwrite(struct socket *sk, struct dcpeer *peer)
2723{
2724 if((peer->state != PEER_TRNS) && (peer->state != PEER_SYNC))
2725 return;
2726 if(peer->transfer == NULL)
2727 {
2728 freedcpeer(peer);
2729 return;
2730 }
2731 dctransgotdata(peer->transfer, peer);
2732}
2733
2734static void udpread(struct socket *sk, void *data)
2735{
d86b7a9f 2736 char *buf, *p, *p2, *hashbuf;
2737 size_t buflen, hashlen;
d3372da9 2738 char *nick, *filename, *hubname;
99a28d47 2739 struct sockaddr_in hubaddr;
d3372da9 2740 int size, slots;
2741 struct fnetnode *fn, *myfn;
2742 struct dchub *hub;
2743 struct srchres *sr;
2744 wchar_t *wnick, *wfile;
d86b7a9f 2745 struct hash *hash;
d3372da9 2746
2747 if((buf = sockgetinbuf(sk, &buflen)) == NULL)
2748 return;
2749 buf = srealloc(buf, buflen + 1);
2750 buf[buflen] = 0;
2751 if(!strncmp(buf, "$SR ", 4))
2752 {
2753 p = buf + 4;
2754 nick = p;
2755 if((p2 = strchr(p, ' ')) == NULL)
2756 {
2757 free(buf);
2758 return;
2759 }
2760 *p2 = 0;
2761 p = p2 + 1;
2762 filename = p;
2763 if((p2 = strchr(p, 5)) == NULL)
2764 {
2765 free(buf);
2766 return;
2767 }
2768 *p2 = 0;
2769 p = p2 + 1;
2770 if((p2 = strchr(p, ' ')) == NULL)
2771 {
2772 free(buf);
2773 return;
2774 }
2775 *p2 = 0;
2776 size = atoi(p);
2777 p = p2 + 1;
2778 if((p2 = strchr(p, '/')) == NULL)
2779 {
2780 free(buf);
2781 return;
2782 }
2783 *p2 = 0;
2784 slots = atoi(p);
2785 p = p2 + 1;
2786 if((p2 = strchr(p, 5)) == NULL)
2787 {
2788 free(buf);
2789 return;
2790 }
2791 p = p2 + 1;
2792 hubname = p;
2793 if((p2 = strstr(p, " (")) == NULL)
2794 {
2795 free(buf);
2796 return;
2797 }
2798 *p2 = 0;
99a28d47 2799 p = p2 + 2;
2800 if((p2 = strchr(p, ':')) == NULL)
2801 {
2802 free(buf);
2803 return;
2804 }
870bf4ad 2805 *(p2++) = 0;
99a28d47 2806 hubaddr.sin_family = AF_INET;
2807 if(!inet_aton(p, &hubaddr.sin_addr))
2808 {
2809 free(buf);
2810 return;
2811 }
2812 p = p2;
2813 if((p2 = strchr(p, ')')) == NULL)
2814 {
2815 free(buf);
2816 return;
2817 }
2818 *p2 = 0;
2819 hubaddr.sin_port = htons(atoi(p));
1d85f24b 2820 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 2821 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
2822 {
d3372da9 2823 free(buf);
2824 return;
2825 }
2826 myfn = NULL;
d86b7a9f 2827 hash = NULL;
2828 if(!strncmp(hubname, "TTH:", 4))
d3372da9 2829 {
d86b7a9f 2830 if((hashbuf = base32decode(hubname + 4, &hashlen)) != NULL)
2831 {
2832 if(hashlen == 24)
2833 hash = newhash(L"TTH", 24, hashbuf);
2834 free(hashbuf);
2835 }
2836 } else {
2837 for(fn = fnetnodes; fn != NULL; fn = fn->next)
d3372da9 2838 {
d86b7a9f 2839 if((fn->fnet == &dcnet) && ((hub = fn->data) != NULL))
d3372da9 2840 {
d86b7a9f 2841 if((hub->nativename != NULL) && !strcmp(hub->nativename, hubname))
d3372da9 2842 {
d86b7a9f 2843 if(myfn == NULL)
2844 {
2845 myfn = fn;
2846 } else {
2847 myfn = NULL;
2848 break;
2849 }
d3372da9 2850 }
2851 }
2852 }
2853 }
99a28d47 2854 if(myfn == NULL)
2855 {
2856 for(fn = fnetnodes; fn != NULL; fn = fn->next)
2857 {
39cc1b93 2858 if((fn->fnet == &dcnet) && (fn->sk != NULL) && addreq(fn->sk->remote, (struct sockaddr *)&hubaddr))
99a28d47 2859 {
2860 myfn = fn;
2861 break;
2862 }
2863 }
2864 }
1d85f24b 2865 hub = NULL;
2866 if(myfn != NULL)
2867 hub = myfn->data;
2868 if((wnick = icmbstowcs(nick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
2869 {
2870 free(buf);
2871 return;
2872 }
d3372da9 2873 sr = newsrchres(&dcnet, wfile, wnick);
2874 if(sr->peernick != NULL)
2875 free(sr->peernick);
2876 sr->peernick = swcsdup(wnick);
2877 sr->size = size;
2878 sr->slots = slots;
2879 free(wfile);
2880 free(wnick);
2881 if(myfn != NULL)
2882 getfnetnode(sr->fn = myfn);
d86b7a9f 2883 if(hash != NULL)
2884 sr->hash = hash;
d3372da9 2885 submitsrchres(sr);
2886 freesrchres(sr);
2887 }
2888 free(buf);
2889}
2890
2891static void hubread(struct socket *sk, struct fnetnode *fn)
2892{
2893 struct dchub *hub;
2894 char *newbuf;
2895 size_t datalen;
2896 char *p;
2897
2898 hub = (struct dchub *)fn->data;
2899 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
2900 return;
2901 if(hub->inbufdata > 500000) /* Discard possible malicious data */
2902 hub->inbufdata = 0;
2903 sizebuf2(hub->inbuf, hub->inbufdata + datalen, 1);
2904 memcpy(hub->inbuf + hub->inbufdata, newbuf, datalen);
2905 free(newbuf);
2906 p = hub->inbuf + hub->inbufdata;
2907 hub->inbufdata += datalen;
2908 while((datalen > 0) && ((p = memchr(p, '|', datalen)) != NULL))
2909 {
2910 *(p++) = 0;
2911 newqcmd(&hub->queue, hub->inbuf);
2912 memmove(hub->inbuf, p, hub->inbufdata -= p - hub->inbuf);
2913 datalen = hub->inbufdata;
2914 p = hub->inbuf;
2915 }
2916}
2917
2918static void huberr(struct socket *sk, int err, struct fnetnode *fn)
2919{
2920 killfnetnode(fn);
2921}
2922
2923static int hubsetnick(struct fnetnode *fn, wchar_t *newnick)
2924{
2925 struct dchub *hub;
2926 char *buf;
2927
2928 hub = fn->data;
1d85f24b 2929 if((buf = icwcstombs(newnick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
d3372da9 2930 return(1);
2931 if((strchr(buf, ' ') != NULL) || (strchr(buf, '|') != NULL) || (strchr(buf, '$') != NULL))
2932 {
2933 free(buf);
2934 return(1);
2935 }
2936 if(hub == NULL) /* Not yet connected */
2937 {
2938 free(buf);
2939 return(0);
2940 }
2941 if(hub->nativenick != NULL)
2942 free(hub->nativenick);
2943 hub->nativenick = buf;
2944 return(0);
2945}
2946
2947static struct dchub *newdchub(struct fnetnode *fn)
2948{
2949 struct dchub *new;
1c4b02cd 2950 wchar_t *emu;
1d85f24b 2951 wchar_t *wcharset;
2952 char *charset;
d3372da9 2953
2954 new = smalloc(sizeof(*new));
2955 memset(new, 0, sizeof(*new));
2956 fn->data = new;
1c4b02cd 2957 if(confgetint("dc", "dcppemu"))
2958 new->dcppemu = 1;
2959 if((emu = wpfind(fn->args, L"dcppemu")) != NULL)
2960 {
2961 if(*emu == L'y')
2962 new->dcppemu = 1;
2963 if(*emu == L'n')
2964 new->dcppemu = 0;
2965 }
1d85f24b 2966 charset = NULL;
2967 if((wcharset = wpfind(fn->args, L"charset")) != NULL)
2968 {
2969 if((charset = icwcstombs(wcharset, "US-ASCII")) != NULL)
2970 {
2971 if(!havecharset(charset))
2972 {
2973 free(charset);
2974 charset = NULL;
2975 }
2976 }
2977 }
2978 if(charset != NULL)
2979 new->charset = charset;
2980 else
2981 new->charset = sstrdup(DCCHARSET);
d3372da9 2982 if(hubsetnick(fn, fn->mynick))
2983 fnetsetnick(fn, L"DoldaConnectUser-IN");
2984 /* IN as in Invalid Nick */
2985 return(new);
2986}
2987
2988static struct dcpeer *newdcpeer(struct socket *sk)
2989{
2990 struct dcpeer *new;
2991
2992 new = smalloc(sizeof(*new));
2993 memset(new, 0, sizeof(*new));
2994 new->transfer = NULL;
2995 getsock(sk);
2996 new->sk = sk;
1c4b02cd 2997 if(confgetint("dc", "dcppemu"))
2998 new->dcppemu = 1;
d3372da9 2999 new->next = peers;
3000 new->prev = NULL;
3001 if(peers != NULL)
3002 peers->prev = new;
3003 peers = new;
3004 numdcpeers++;
3005 return(new);
3006}
3007
3008static void freedcpeer(struct dcpeer *peer)
3009{
3010 int i;
3011 struct qcommand *qcmd;
3012
3013 peer->freeing = 1;
3014 if(peers == peer)
3015 peers = peer->next;
3016 if(peer->next != NULL)
3017 peer->next->prev = peer->prev;
3018 if(peer->prev != NULL)
3019 peer->prev->next = peer->next;
3020 if(peer->transfer != NULL)
3021 {
3022 if(peer->transfer->dir == TRNSD_UP)
3023 peer->transfer->close = 1;
3024 if(peer->transfer->dir == TRNSD_DOWN)
3025 resettransfer(peer->transfer);
3026 transferdetach(peer->transfer);
3027 }
1e9d82b1 3028 if(peer->timeout != NULL)
3029 canceltimer(peer->timeout);
d3372da9 3030 if(peer->sk->data == peer)
3031 peer->sk->data = NULL;
3032 peer->sk->readcb = NULL;
3033 peer->sk->writecb = NULL;
3034 peer->sk->errcb = NULL;
3035 putsock(peer->sk);
3036 endcompress(peer);
3037 if(peer->supports != NULL)
3038 {
3039 for(i = 0; peer->supports[i] != NULL; i++)
3040 free(peer->supports[i]);
3041 free(peer->supports);
3042 }
d3372da9 3043 if(peer->inbuf != NULL)
3044 free(peer->inbuf);
3045 if(peer->key != NULL)
3046 free(peer->key);
3047 if(peer->wcsname != NULL)
3048 free(peer->wcsname);
3049 if(peer->nativename != NULL)
3050 free(peer->nativename);
1d85f24b 3051 if(peer->charset != NULL)
3052 free(peer->charset);
d3372da9 3053 if(peer->fn != NULL)
3054 putfnetnode(peer->fn);
3055 while((qcmd = ulqcmd(&peer->queue)) != NULL)
3056 freeqcmd(qcmd);
3057 free(peer);
3058 numdcpeers--;
3059}
3060
3061static void hubconnect(struct fnetnode *fn)
3062{
3063 fn->sk->readcb = (void (*)(struct socket *, void *))hubread;
3064 fn->sk->errcb = (void (*)(struct socket *, int, void *))huberr;
3065 getfnetnode(fn);
3066 fn->data = newdchub(fn);
3067 fn->sk->data = fn;
3068 return;
3069}
3070
3071static void hubdestroy(struct fnetnode *fn)
3072{
3073 struct dchub *hub;
3074 struct qcommand *qcmd;
3075
3076 hub = (struct dchub *)fn->data;
9d131372 3077 if((fn->sk != NULL) && (fn->sk->data == fn))
d3372da9 3078 {
9d131372 3079 fn->sk->data = NULL;
3080 putfnetnode(fn);
d3372da9 3081 }
3082 if(hub == NULL)
3083 return;
3084 while((qcmd = ulqcmd(&hub->queue)) != NULL)
3085 freeqcmd(qcmd);
3086 if(hub->nativename != NULL)
3087 free(hub->nativename);
3088 if(hub->nativenick != NULL)
3089 free(hub->nativenick);
1d85f24b 3090 if(hub->charset != NULL)
3091 free(hub->charset);
d3372da9 3092 if(hub->inbuf != NULL)
3093 free(hub->inbuf);
3094 free(hub);
3095}
3096
3097static wchar_t *dcbasename(wchar_t *filename)
3098{
3099 wchar_t *ret;
3100
3101 if((ret = wcsrchr(filename, L'\\')) != NULL)
3102 return(ret + 1);
3103 return(filename);
3104}
3105
3106static struct transferiface dctransfer =
3107{
3108 .detach = (void (*)(struct transfer *, void *))dctransdetach,
3109 .gotdata = (void (*)(struct transfer *, void *))dctransgotdata,
3110 .endofdata = (void (*)(struct transfer *, void *))dctransendofdata,
3111 .wantdata = (void (*)(struct transfer *, void *))dcwantdata
3112};
3113
3114static struct fnet dcnet =
3115{
3116 .name = L"dc",
3117 .connect = hubconnect,
3118 .destroy = hubdestroy,
3119 .setnick = hubsetnick,
3120 .reqconn = hubreqconn,
3121 .sendchat = hubsendchat,
3122 .search = hubsearch,
3123 .filebasename = dcbasename
3124};
3125
3126static void peerread(struct socket *sk, struct dcpeer *peer)
3127{
3128 char *newbuf, *p;
3129 size_t datalen;
9a2d6cb8 3130 struct command *cmd;
d3372da9 3131
3132 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
3133 return;
3134 sizebuf2(peer->inbuf, peer->inbufdata + datalen, 1);
3135 memcpy(peer->inbuf + peer->inbufdata, newbuf, datalen);
3136 free(newbuf);
d3372da9 3137 peer->inbufdata += datalen;
9a2d6cb8 3138 if(peer->state == PEER_CMD)
d3372da9 3139 {
d3372da9 3140 p = peer->inbuf;
9a2d6cb8 3141 while((peer->inbufdata > 0) && (p = memchr(peer->inbuf, '|', peer->inbufdata)) != NULL)
3142 {
3143 *(p++) = 0;
3144 newqcmd(&peer->queue, peer->inbuf);
3145 for(cmd = peercmds; cmd->handler != NULL; cmd++)
3146 {
5eee9d66 3147 if(!memcmp(peer->inbuf, cmd->name, strlen(cmd->name)) && ((peer->inbuf[strlen(cmd->name)] == ' ') || (peer->inbuf[strlen(cmd->name)] == '|')))
9a2d6cb8 3148 break;
3149 }
5eee9d66 3150 memmove(peer->inbuf, p, peer->inbufdata -= p - peer->inbuf);
9a2d6cb8 3151 if(cmd->stop)
3152 {
3153 peer->state = PEER_STOP;
3154 break;
3155 }
9a2d6cb8 3156 }
3157 } else if(peer->state == PEER_TTHL) {
3158 handletthl(peer);
d3372da9 3159 }
3160}
3161
3162static void peererror(struct socket *sk, int err, struct dcpeer *peer)
3163{
3164 freedcpeer(peer);
3165}
3166
3167static void peerconnect(struct socket *sk, int err, struct fnetnode *fn)
3168{
3169 struct dcpeer *peer;
1c4b02cd 3170 struct dchub *hub;
d3372da9 3171
3172 if(err != 0)
3173 {
3174 putfnetnode(fn);
3175 return;
3176 }
1c4b02cd 3177 hub = fn->data;
d3372da9 3178 peer = newdcpeer(sk);
3179 peer->fn = fn;
3180 peer->accepted = 0;
1c4b02cd 3181 peer->dcppemu = hub->dcppemu;
d3372da9 3182 sk->readcb = (void (*)(struct socket *, void *))peerread;
3183 sk->errcb = (void (*)(struct socket *, int, void *))peererror;
3184 sk->data = peer;
3185 socksettos(sk, confgetint("fnet", "fnptos"));
d3372da9 3186 putsock(sk);
1e9d82b1 3187 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
9a2d6cb8 3188 sendmynick(peer);
3189 sendpeerlock(peer);
d3372da9 3190}
3191
3192static void peeraccept(struct socket *sk, struct socket *newsk, void *data)
3193{
3194 struct dcpeer *peer;
3195
3196 peer = newdcpeer(newsk);
3197 peer->accepted = 1;
3198 newsk->readcb = (void (*)(struct socket *, void *))peerread;
3199 newsk->errcb = (void (*)(struct socket *, int, void *))peererror;
3200 newsk->data = peer;
3201 socksettos(newsk, confgetint("fnet", "fnptos"));
1e9d82b1 3202 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 3203}
3204
3205static void updatehmlist(void)
3206{
3207 int i, lev, ic, ret;
3208 struct sharecache *node;
3209 char *buf, *buf2, numbuf[32];
3210 size_t bufsize, bufdata;
3211 int fd, ibuf;
3212
3213 bufdata = 0;
3214 buf = smalloc(bufsize = 65536);
3215 node = shareroot->child;
3216 lev = 0;
3217 while(1)
3218 {
3219 ic = 0;
1d85f24b 3220 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 3221 if((buf2 = icwcstombs(node->name, DCCHARSET)) != NULL)
3222 {
3223 for(i = 0; i < lev; i++)
3224 addtobuf(buf, 9);
3225 bufcat(buf, buf2, strlen(buf2));
3226 free(buf2);
3227 if(node->f.b.type == FILE_REG)
3228 {
3229 addtobuf(buf, '|');
3230 sprintf(numbuf, "%i", node->size);
3231 bufcat(buf, numbuf, strlen(numbuf));
3232 }
3233 addtobuf(buf, 13);
3234 addtobuf(buf, 10);
3235 } else {
3236 ic = 1;
3237 }
3238 if((node->child != NULL) && !ic)
3239 {
3240 lev++;
3241 node = node->child;
3242 } else if(node->next != NULL) {
3243 node = node->next;
3244 } else {
3245 while(node->next == NULL)
3246 {
3247 lev--;
3248 node = node->parent;
3249 if(node == shareroot)
3250 break;
3251 }
3252 if(node == shareroot)
3253 break;
3254 node = node->next;
3255 }
3256 }
3257 if(hmlistname != NULL)
3258 {
3259 unlink(hmlistname);
3260 free(hmlistname);
3261 }
3262 hmlistname = sstrdup("/tmp/dc-filelist-hm-XXXXXX");
3263 if((fd = mkstemp(hmlistname)) < 0)
3264 {
3265 flog(LOG_WARNING, "could not create HM file list tempfile: %s", strerror(errno));
3266 free(hmlistname);
3267 hmlistname = NULL;
3268 } else {
3269 /*
3270 * I do not want to implement a good Huffman encoder, and it's not
3271 * like Huffman encoding actually yields any impressive results
3272 * for DC file lists anyway, so I'll just output a bogus
3273 * tree. Implement a good encoder if you want to.
3274 */
3275 write(fd, "HE3\r\0", 5);
3276 write(fd, &bufdata, 4);
3277 ibuf = 256;
3278 write(fd, &ibuf, 2);
3279 ibuf = 8;
3280 for(i = 0; i < 256; i++)
3281 {
3282 write(fd, &i, 1);
3283 write(fd, &ibuf, 1);
3284 }
3285 for(i = 0; i < 256; i++)
3286 write(fd, &i, 1);
3287 for(buf2 = buf; bufdata > 0;)
3288 {
3289 if((ret = write(fd, buf2, bufdata)) < 0)
3290 {
3291 flog(LOG_WARNING, "could not write file list: %s", strerror(errno));
3292 break;
3293 }
3294 bufdata -= ret;
3295 buf2 += ret;
3296 }
3297 close(fd);
3298 }
3299 free(buf);
3300}
3301
3302static struct xmlent
3303{
3304 wchar_t c;
3305 wchar_t *ent;
3306} entities[] = {
3307 {L'&', L"&amp;"},
3308 {L'\"', L"&#34;"},
3309/* {L'\'', L"&quot;"}, Emulate DC++ escaping by omitting this. */
3310 {L'\0', NULL}
3311};
3312
3313static wchar_t *escapexml(wchar_t *src)
3314{
3315 static wchar_t *buf = NULL;;
3316 int ret, c;
3317 wchar_t nbuf[32];
3318 size_t bufsize, bufdata;
3319 struct xmlent *ent;
3320
3321 if(buf != NULL)
3322 free(buf);
3323 buf = NULL;
3324 bufsize = bufdata = 0;
3325 for(; *src != L'\0'; src++)
3326 {
3327 c = wctob(*src);
3328 if((c > 0) && (c < 32))
3329 {
3330 bufcat(buf, L"&#", 2);
3331 ret = swprintf(nbuf, (sizeof(nbuf) / sizeof(*nbuf)), L"%i", c);
3332 bufcat(buf, nbuf, ret);
3333 addtobuf(buf, L';');
3334 } else {
3335 for(ent = entities; ent->ent != NULL; ent++)
3336 {
3337 if(ent->c == *src)
3338 {
3339 bufcat(buf, ent->ent, wcslen(ent->ent));
3340 break;
3341 }
3342 }
3343 if(ent->ent == NULL)
3344 addtobuf(buf, *src);
3345 }
3346 }
3347 addtobuf(buf, L'\0');
3348 return(buf);
3349}
3350
3351static void updatexmllist(void)
3352{
3353 int i, fd, lev;
3354 FILE *fs;
3355 char cidbuf[14], *namebuf;
3356 char *hashbuf;
3357 struct sharecache *node;
3358
3359 if(xmllistname != NULL)
3360 {
3361 unlink(xmllistname);
3362 free(xmllistname);
3363 }
3364 xmllistname = sstrdup("/tmp/dc-filelist-dcxml-XXXXXX");
3365 if((fd = mkstemp(xmllistname)) < 0)
3366 {
3367 flog(LOG_WARNING, "could not create XML file list tempfile: %s", strerror(errno));
3368 free(xmllistname);
3369 xmllistname = NULL;
3370 return;
3371 }
3372 if((fs = fdopen(fd, "w")) == NULL)
3373 {
3374 flog(LOG_WARNING, "could not fdopen XML list fd %i: %s", fd, strerror(errno));
3375 unlink(xmllistname);
3376 free(xmllistname);
3377 xmllistname = NULL;
3378 close(fd);
3379 return;
3380 }
3381 fprintf(fs, "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?>\r\n");
3382 for(i = 0; i < sizeof(cidbuf) - 1; i++)
3383 cidbuf[i] = (rand() % ('Z' - 'A' + 1)) + 'A';
3384 cidbuf[i] = 0;
1c4b02cd 3385 if(confgetint("dc", "dcppemu"))
3386 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"DC++ 0.674\">\r\n", cidbuf);
3387 else
3388 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"%s\">\r\n", cidbuf, "DoldaConnect" VERSION);
d3372da9 3389
3390 node = shareroot->child;
3391 lev = 0;
3392 while(1)
3393 {
3394 if((namebuf = icswcstombs(escapexml(node->name), "UTF-8", NULL)) != NULL)
3395 {
3396 for(i = 0; i < lev; i++)
3397 fputc('\t', fs);
3398 if(node->child != NULL)
3399 {
3400 fprintf(fs, "<Directory Name=\"%s\">\r\n", namebuf);
3401 node = node->child;
3402 lev++;
3403 continue;
3404 } else {
3405 fprintf(fs, "<File Name=\"%s\" Size=\"%i\"", namebuf, node->size);
3406 if(node->f.b.hastth)
3407 {
3408 hashbuf = base32encode(node->hashtth, 24);
3409 fprintf(fs, " TTH=\"%.39s\"", hashbuf);
3410 free(hashbuf);
3411 }
3412 fprintf(fs, "/>\r\n");
3413 }
3414 while(node->next == NULL)
3415 {
3416 node = node->parent;
3417 if(node == shareroot)
3418 {
3419 break;
3420 } else {
3421 lev--;
3422 for(i = 0; i < lev; i++)
3423 fputc('\t', fs);
3424 fprintf(fs, "</Directory>\r\n");
3425 }
3426 }
3427 if(node == shareroot)
3428 break;
3429 node = node->next;
3430 }
3431 }
3432
1c4b02cd 3433 if(confgetint("dc", "dcppemu"))
3434 fprintf(fs, "</FileListing>");
3435 else
3436 fprintf(fs, "</FileListing>\r\n");
d3372da9 3437 fclose(fs);
3438}
3439
3440static void updatexmlbz2list(void)
3441{
3442 int err, fd;
3443 FILE *in;
3444 FILE *real;
3445 BZFILE *out;
3446 char buf[1024];
3447 size_t bufdata;
3448
3449 if(xmllistname == NULL)
3450 return;
3451 if((in = fopen(xmllistname, "r")) == NULL)
3452 {
3453 flog(LOG_WARNING, "could not open XML file list for bzipping: %s", strerror(errno));
3454 return;
3455 }
3456 if(xmlbz2listname != NULL)
3457 {
3458 unlink(xmlbz2listname);
3459 free(xmlbz2listname);
3460 }
3461 xmlbz2listname = sstrdup("/tmp/dc-filelist-dcxmlbz2-XXXXXX");
3462 if((fd = mkstemp(xmlbz2listname)) < 0)
3463 {
3464 flog(LOG_WARNING, "could not create bzipped XML file list tempfile: %s", strerror(errno));
3465 free(xmlbz2listname);
3466 xmlbz2listname = NULL;
3467 fclose(in);
3468 return;
3469 }
3470 if((real = fdopen(fd, "w")) == NULL)
3471 {
3472 flog(LOG_WARNING, "could not fdopen bzipped XML list fd %i: %s", fd, strerror(errno));
3473 close(fd);
3474 unlink(xmlbz2listname);
3475 free(xmlbz2listname);
3476 xmlbz2listname = NULL;
3477 fclose(in);
3478 return;
3479 }
3480 out = BZ2_bzWriteOpen(&err, real, 9, 0, 0);
3481 if(err != BZ_OK)
3482 {
3483 flog(LOG_WARNING, "could not open bzip2 stream from XML list");
3484 fclose(real);
3485 unlink(xmlbz2listname);
3486 free(xmlbz2listname);
3487 xmlbz2listname = NULL;
3488 fclose(in);
3489 return;
3490 }
3491 while(!feof(in))
3492 {
3493 bufdata = fread(buf, 1, sizeof(buf), in);
3494 BZ2_bzWrite(&err, out, buf, bufdata);
3495 }
3496 fclose(in);
3497 BZ2_bzWriteClose(&err, out, 0, NULL, NULL);
3498 fclose(real);
3499}
3500
3501static int shareupdate(unsigned long long uusharesize, void *data)
3502{
3503 updatehmlist();
3504 updatexmllist();
3505 updatexmlbz2list();
3506 return(0);
3507}
3508
3509static void dispatchcommand(struct qcommand *qcmd, struct command *cmdlist, struct socket *sk, void *data)
3510{
3511 char *p;
3512 struct command *cmd;
3513
3514 if((p = strchr(qcmd->string, ' ')) != NULL)
3515 *(p++) = 0;
3516 for(cmd = cmdlist; cmd->handler != NULL; cmd++)
3517 {
3518 if(!strcmp(cmd->name, qcmd->string))
3519 break;
3520 }
3521 if(cmd->handler != NULL)
3522 cmd->handler(sk, data, qcmd->string, p);
3523/*
3524 else
3525 flog(LOG_DEBUG, "Unimplemented DC command: %s \"%s\"", qcmd->string, p?p:"noargs");
3526*/
3527}
3528
3529static int run(void)
3530{
3531 struct fnetnode *fn, *nextfn;
3532 struct dchub *hub;
3533 struct dcpeer *peer, *nextpeer;
3534 struct qcommand *qcmd;
3535 int ret;
3536
3537 ret = 0;
3538 for(fn = fnetnodes; fn != NULL; fn = nextfn)
3539 {
3540 nextfn = fn->next;
3541 if(fn->fnet != &dcnet)
3542 continue;
3543 if(fn->data == NULL)
3544 continue;
3545 hub = (struct dchub *)fn->data;
3546 if((qcmd = ulqcmd(&hub->queue)) != NULL)
3547 {
3548 if(*qcmd->string == '$')
3549 {
3550 if((fn->sk != NULL) && (fn->sk->state == SOCK_EST))
3551 dispatchcommand(qcmd, hubcmds, fn->sk, fn);
3552 } else if(*qcmd->string != 0) {
3553 hubrecvchat(fn->sk, fn, NULL, qcmd->string);
3554 }
3555 freeqcmd(qcmd);
3556 ret = 1;
3557 break;
3558 }
3559 }
3560 for(peer = peers; peer != NULL; peer = nextpeer)
3561 {
3562 nextpeer = peer->next;
3563 if((qcmd = ulqcmd(&peer->queue)) != NULL)
3564 {
1e9d82b1 3565 if(peer->timeout != NULL)
3566 canceltimer(peer->timeout);
3567 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 3568 if(*qcmd->string == '$')
3569 dispatchcommand(qcmd, peercmds, peer->sk, peer);
3570 freeqcmd(qcmd);
3571 ret = 1;
3572 break;
3573 }
3574 }
3575 return(ret);
3576}
3577
3578static void preinit(int hup)
3579{
3580 if(hup)
3581 return;
3582 regfnet(&dcnet);
3583}
3584
3585static int updateudpport(struct configvar *var, void *uudata)
3586{
3587 struct sockaddr_in addr;
3588 struct socket *newsock;
3589
3590 memset(&addr, 0, sizeof(addr));
3591 addr.sin_family = AF_INET;
3592 addr.sin_port = htons(var->val.num);
3593 if((newsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3594 {
3595 flog(LOG_WARNING, "could not create new DC UDP socket, reverting to old: %s", strerror(errno));
3596 return(0);
3597 }
3598 newsock->readcb = udpread;
3599 if(udpsock != NULL)
3600 putsock(udpsock);
3601 udpsock = newsock;
3602 return(0);
3603}
3604
3605static int updatetcpport(struct configvar *var, void *uudata)
3606{
3607 struct sockaddr_in addr;
3608 struct socket *newsock;
3609
3610 memset(&addr, 0, sizeof(addr));
3611 addr.sin_family = AF_INET;
3612 addr.sin_port = htons(var->val.num);
3613 if((newsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3614 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3615 if(tcpsock != NULL)
3616 putsock(tcpsock);
3617 tcpsock = newsock;
3618 return(0);
3619}
3620
3621static int init(int hup)
3622{
3623 struct sockaddr_in addr;
3624
3625 if(!hup)
3626 {
3627 GCBREG(sharechangecb, shareupdate, NULL);
3628 if(udpsock != NULL)
3629 putsock(udpsock);
3630 if(tcpsock != NULL)
3631 putsock(tcpsock);
3632 addr.sin_family = AF_INET;
3633 memset(&addr.sin_addr, 0, sizeof(addr.sin_addr));
3634 addr.sin_port = htons(confgetint("dc", "udpport"));
3635 if((udpsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3636 {
3637 flog(LOG_CRIT, "could not create DC UDP socket: %s", strerror(errno));
3638 return(1);
3639 }
3640 udpsock->readcb = udpread;
3641 addr.sin_port = htons(confgetint("dc", "tcpport"));
3642 if((tcpsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3643 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3644 CBREG(confgetvar("dc", "udpport"), conf_update, updateudpport, NULL, NULL);
3645 CBREG(confgetvar("dc", "tcpport"), conf_update, updatetcpport, NULL, NULL);
3646 CBREG(confgetvar("net", "mode"), conf_update, updatetcpport, NULL, NULL);
3647 }
3648 return(0);
3649}
3650
3651static void terminate(void)
3652{
3653 if(hmlistname != NULL)
3654 {
3655 unlink(hmlistname);
3656 free(hmlistname);
3657 }
3658 if(xmllistname != NULL)
3659 {
3660 unlink(xmllistname);
3661 free(xmllistname);
3662 }
3663 if(xmlbz2listname != NULL)
3664 {
3665 unlink(xmlbz2listname);
3666 free(xmlbz2listname);
3667 }
3668}
3669
3670static struct configvar myvars[] =
3671{
3672 {CONF_VAR_STRING, "desc", {.str = L""}},
3673 {CONF_VAR_STRING, "speedstring", {.str = L"LAN(T1)"}},
3674 {CONF_VAR_STRING, "email", {.str = L"spam@spam.org"}},
3675 {CONF_VAR_INT, "udpport", {.num = 0}},
3676 {CONF_VAR_INT, "tcpport", {.num = 0}},
1c4b02cd 3677 {CONF_VAR_BOOL, "dcppemu", {.num = 0}},
d3372da9 3678 {CONF_VAR_END}
3679};
3680
3681static struct module me =
3682{
3683 .conf =
3684 {
3685 .vars = myvars
3686 },
3687 .preinit = preinit,
3688 .init = init,
3689 .run = run,
3690 .terminate = terminate,
3691 .name = "dc"
3692};
3693
3694MODULE(me)
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