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Fix stupid typos.
[doldaconnect.git] / daemon / fnet-dc.c
CommitLineData
d3372da9 1/*
2 * Dolda Connect - Modular multiuser Direct Connect-style client
3 * Copyright (C) 2004 Fredrik Tolf (fredrik@dolda2000.com)
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18*/
19#include <stdlib.h>
20#include <stdio.h>
21#include <wchar.h>
22#include <malloc.h>
23#include <unistd.h>
24#include <fcntl.h>
25#include <string.h>
26#include <netinet/in.h>
27#include <arpa/inet.h>
28#include <alloca.h>
29#include <wctype.h>
30#include <time.h>
31#include <errno.h>
32#include <bzlib.h>
33#include <zlib.h>
34#include <sys/stat.h>
35
36#ifdef HAVE_CONFIG_H
37#include <config.h>
38#endif
39#include "filenet.h"
40#include "log.h"
41#include "module.h"
42#include "utils.h"
43#include "client.h"
44#include "transfer.h"
45#include "sysevents.h"
46#include "net.h"
9a2d6cb8 47#include "tiger.h"
d3372da9 48
49/*
50 * The Direct Connect protocol is extremely ugly. Thus, this code must
51 * also be a bit ugly in certain places. Please forgive me. =/
52 *
53 * This also means that there might be some pieces of the code that
54 * look completely illogical to you, and you think that you may make
55 * them much neater/better. However, in many cases it might just be
56 * that it's required to cope with some oddity of the protocol, such
57 * as the amazingly ugly delayed key response in the peer protocol.
58 */
59
60/* I assume this is the correct character set to use for DC,
61 * considering it was developed without i18n support under Windows */
62#define DCCHARSET "windows-1252"
63
64#ifdef DCPP_MASQUERADE
65/*
66 * I honestly don't want to pretend being a client that I'm not, but
67 * there are so many hubs that simply do not accept any clients
68 * outside their whitelists, for no obvious reasons, so I feel that I
69 * am left with little choice. Anyhow, as long as I actually support
70 * all the features that my faked DC++ version does, there should be
71 * very little harm done.
72 */
73#define DCIDTAG "++"
74#define DCIDTAGV "0.674"
75#define DCIDFULL "DC++ 0.674"
76#else
77#define DCIDTAG "Dolda"
78#define DCIDTAGV VERSION
79#define DCIDFULL "DoldaConnect " VERSION
80#endif
81
82#define PEER_CMD 0
9a2d6cb8 83#define PEER_STOP 1
84#define PEER_TRNS 2
85#define PEER_SYNC 3
86#define PEER_TTHL 4
d3372da9 87
88#define CPRS_NONE 0
89#define CPRS_ZLIB 1
90
91struct command
92{
93 char *name;
94 void (*handler)(struct socket *sk, void *data, char *cmd, char *args);
9a2d6cb8 95 int stop;
d3372da9 96};
97
98struct qcommand
99{
100 struct qcommand *next;
101 char *string;
102};
103
104struct dchub
105{
106 char *inbuf;
107 size_t inbufdata, inbufsize;
108 struct qcommand *queue;
1c4b02cd 109 int extended, dcppemu;
1d85f24b 110 char *charset;
d3372da9 111 char *nativename;
112 char *nativenick;
113};
114
115struct dcexppeer
116{
117 struct dcexppeer *next, *prev;
118 char *nick;
119 struct fnetnode *fn;
120 struct timer *expire;
121};
122
123struct dcpeer
124{
125 struct dcpeer *next, *prev;
126 struct socket *sk;
127 struct fnetnode *fn;
128 char *inbuf;
129 size_t inbufdata, inbufsize;
9a2d6cb8 130 size_t curread, totalsize;
d3372da9 131 int freeing;
1e9d82b1 132 struct timer *timeout;
d3372da9 133 struct qcommand *queue;
134 struct transfer *transfer;
135 int state;
136 int ptclose; /* Close after transfer is complete */
137 int accepted; /* If false, we connected, otherwise, we accepted */
1c4b02cd 138 int extended, dcppemu;
d3372da9 139 int direction; /* Using the constants from transfer.h */
140 int compress;
df873cd0 141 int hascurpos, fetchingtthl, notthl;
9a2d6cb8 142 struct tigertreehash tth;
1d85f24b 143 char *charset;
d3372da9 144 void *cprsdata;
d3372da9 145 char *key;
146 char *nativename;
147 char **supports;
148 wchar_t *wcsname;
149};
150
151static struct fnet dcnet;
152static struct transferiface dctransfer;
153static struct socket *udpsock = NULL;
154static struct socket *tcpsock = NULL;
155static struct dcpeer *peers = NULL;
156int numdcpeers = 0;
157static struct dcexppeer *expected = NULL;
158static char *hmlistname = NULL;
159static char *xmllistname = NULL;
160static char *xmlbz2listname = NULL;
6305c428 161static struct timer *listwritetimer = NULL;
d3372da9 162
163static void peerconnect(struct socket *sk, int err, struct fnetnode *fn);
164static void freedcpeer(struct dcpeer *peer);
165static void transread(struct socket *sk, struct dcpeer *peer);
166static void transerr(struct socket *sk, int err, struct dcpeer *peer);
167static void transwrite(struct socket *sk, struct dcpeer *peer);
168static void updatehmlist(void);
169static void updatexmllist(void);
170static void updatexmlbz2list(void);
9a2d6cb8 171static void requestfile(struct dcpeer *peer);
6305c428 172static void updatelists(int now);
d3372da9 173
174static int reservedchar(unsigned char c)
175{
176 return((c == 0) || (c == 5) || (c == 124) || (c == 96) || (c == 126) || (c == 36));
177}
178
179/* Oh, how I despise having to do this... */
180static char *dcmakekey(char *lock)
181{
182 int i, len, offset;
183 char *buf, *key;
184 char save;
185
186 buf = smalloc(strlen(lock));
187 save = 5;
188 len = 0;
189 for(i = 0; lock[i]; i++)
190 {
191 buf[i] = lock[i] ^ save;
192 buf[i] = ((buf[i] & 0x0F) << 4) | ((buf[i] & 0xF0) >> 4);
193 save = lock[i];
194 if((i != 0) && reservedchar(buf[i]))
195 len += 10;
196 else
197 len++;
198 }
199 buf[0] ^= buf[i - 1];
200 if(reservedchar(buf[0]))
201 len += 10;
202 else
203 len++;
204 key = smalloc(len + 1);
205 offset = 0;
206 for(i = 0; lock[i] != 0; i++)
207 {
208 if(reservedchar(buf[i]))
209 offset += sprintf(key + offset, "/%%DCN%03i%%/", buf[i]);
210 else
211 key[offset++] = buf[i];
212 }
213 key[offset] = 0;
214 free(buf);
215 return(key);
216}
217
9a2d6cb8 218static char *pathnmdc2adc(char *path)
219{
220 char *ret;
221 size_t retsize, retdata;
222
223 if(!strcmp(path, "files.xml") || !strcmp(path, "files.xml.bz2") || !strcmp(path, "MyList.DcLst"))
224 return(sstrdup(path));
225 ret = NULL;
226 retsize = retdata = 0;
227 addtobuf(ret, '/');
228 for(; *path; path++)
229 {
230 if(*path == '\\')
231 addtobuf(ret, '/');
232 else
233 addtobuf(ret, *path);
234 }
235 addtobuf(ret, 0);
236 return(ret);
237}
238
239static int isdchash(struct hash *hash)
240{
241 if(wcscmp(hash->algo, L"TTH"))
242 return(0);
243 if(hash->len != 24)
244 return(0);
245 return(1);
246}
247
248static int supports(struct dcpeer *peer, char *cap)
249{
250 char **p;
251
252 if(peer->supports == NULL)
253 return(0);
254 for(p = peer->supports; *p != NULL; p++)
255 {
256 if(!strcasecmp(*p, cap))
257 return(1);
258 }
259 return(0);
260}
261
d3372da9 262static void endcompress(struct dcpeer *peer)
263{
264 if(peer->compress == CPRS_ZLIB)
265 {
266 deflateEnd(peer->cprsdata);
267 free(peer->cprsdata);
268 }
269 peer->compress = CPRS_NONE;
270}
271
272static void initcompress(struct dcpeer *peer, int algo)
273{
274 int ret;
275
276 endcompress(peer);
277 peer->compress = algo;
278 if(algo == CPRS_ZLIB)
279 {
280 peer->cprsdata = smalloc(sizeof(z_stream));
281 memset(peer->cprsdata, 0, sizeof(z_stream));
282 if((ret = deflateInit(peer->cprsdata, 3)) != Z_OK)
283 {
284 flog(LOG_CRIT, "Aiya! zlib refuses to init (%i)!", ret);
285 abort();
286 }
287 }
288}
289
290static void unquote(wchar_t *in)
291{
292 wchar_t *p, *p2, nc;
293
294 for(p = in; *p != L'\0'; p++)
295 {
296 if(*p == L'&')
297 {
298 for(p2 = p + 1; (*p2 != L'\0') && (*p2 != L';') && (*p2 != L'&'); p2++);
299 if(*p2 == L'&')
300 continue;
301 if(*p2 == L'\0')
302 return;
303 *p2 = L'\0';
304 nc = L'\0';
305 if(!wcscmp(p + 1, L"amp"))
306 {
307 nc = L'&';
308 } else if(p[1] == L'#') {
309 nc = ucptowc(wcstol(p + 2, NULL, 10));
310 }
311 if(nc == L'\0')
312 {
313 *p2 = L';';
314 p = p2;
315 continue;
316 }
317 *p = nc;
318 memmove(p + 1, p2 + 1, (wcslen(p2 + 1) + 1) * sizeof(wchar_t));
319 }
320 }
321}
322
323static void freeexppeer(struct dcexppeer *ep)
324{
325 if(ep->next != NULL)
326 ep->next->prev = ep->prev;
327 if(ep->prev != NULL)
328 ep->prev->next = ep->next;
329 if(ep == expected)
330 expected = ep->next;
331 free(ep->nick);
332 putfnetnode(ep->fn);
333 if(ep->expire != NULL)
334 canceltimer(ep->expire);
335 free(ep);
336}
337
338static void exppeerexpire(int cancelled, struct dcexppeer *ep)
339{
340 ep->expire = NULL;
341 if(!cancelled)
342 freeexppeer(ep);
343}
344
345static struct dcexppeer *expectpeer(char *nick, struct fnetnode *fn)
346{
347 struct dcexppeer *ep;
348
349 ep = smalloc(sizeof(*ep));
350 ep->nick = sstrdup(nick);
351 getfnetnode(ep->fn = fn);
352 ep->expire = timercallback(ntime() + 300, (void (*)(int, void *))exppeerexpire, ep);
353 ep->next = expected;
354 ep->prev = NULL;
355 if(expected != NULL)
356 expected->prev = ep;
357 expected = ep;
358 return(ep);
359}
360
361static struct qcommand *newqcmd(struct qcommand **queue, char *string)
362{
363 struct qcommand *new;
364
365 while(*queue != NULL)
366 queue = &(*queue)->next;
367 new = smalloc(sizeof(*new));
368 new->string = sstrdup(string);
369 new->next = *queue;
370 *queue = new;
371 return(new);
372}
373
374static struct qcommand *ulqcmd(struct qcommand **queue)
375{
376 struct qcommand *qcmd;
377
378 if((qcmd = *queue) == NULL)
379 return(NULL);
380 *queue = qcmd->next;
381 return(qcmd);
382}
383
384static void freeqcmd(struct qcommand *qcmd)
385{
386 free(qcmd->string);
387 free(qcmd);
388}
389
390static void hubrecvchat(struct socket *sk, struct fnetnode *fn, char *from, char *string)
391{
392 wchar_t *chat, *wfrom, *wpeer;
393 char *p, *end;
394 struct fnetpeer *peer;
1d85f24b 395 struct dchub *hub;
d3372da9 396
1d85f24b 397 hub = fn->data;
d3372da9 398 end = string + strlen(string);
399 while((p = strchr(string, 13)) != NULL)
400 memmove(p, p + 1, (end-- - p));
401 if(from != NULL)
402 {
403 if((strlen(string) > strlen(from) + 2) && (*string == '<') && !memcmp(string + 1, from, strlen(from)) && (*(string + strlen(from) + 1) == '>'))
404 string += strlen(from) + 2;
1d85f24b 405 if((wfrom = icmbstowcs(from, hub->charset)) == NULL)
d3372da9 406 return;
407 wpeer = swcsdup(wfrom);
408 } else {
409 wfrom = NULL;
410 wpeer = NULL;
411 if(*string == '<')
412 {
413 for(p = string + 1; *p; p++)
414 {
415 if((*p == ' ') || (*p == '>'))
416 break;
417 }
418 if(*p == '>')
419 {
420 *(p++) = 0;
421 if(*p == ' ')
422 p++;
1d85f24b 423 if((wpeer = icmbstowcs(string + 1, hub->charset)) == NULL)
d3372da9 424 return;
425 string = p;
426 }
427 }
428 if(wpeer == NULL)
429 wpeer = swcsdup(L"");
430 }
1d85f24b 431 if((chat = icmbstowcs(string, hub->charset)) == NULL)
d3372da9 432 {
433 if(wfrom != NULL)
434 free(wfrom);
435 free(wpeer);
436 return;
437 }
438 unquote(chat);
439 if(wfrom != NULL)
440 {
441 if((peer = fnetfindpeer(fn, wfrom)) == NULL) /* Assume public chat */
442 fnethandlechat(fn, 1, wfrom, wpeer, chat);
443 else
444 fnethandlechat(fn, 0, wfrom, wpeer, chat);
445 } else {
446 fnethandlechat(fn, 1, L"", wpeer, chat);
447 }
448 if(wfrom != NULL)
449 free(wfrom);
450 free(wpeer);
451 free(chat);
452}
453
1e9d82b1 454static void peertimeout(int cancelled, struct dcpeer *peer)
455{
456 peer->timeout = NULL;
457 if(cancelled)
458 return;
459 freedcpeer(peer);
460}
461
d3372da9 462static void sendadc(struct socket *sk, char *arg)
463{
464 char *buf;
465 size_t bufsize, bufdata;
466
467 buf = NULL;
468 bufsize = bufdata = 0;
469 addtobuf(buf, ' ');
470 for(; *arg; arg++)
471 {
472 if(*arg == ' ')
473 {
474 bufcat(buf, "\\s", 2);
475 } else if(*arg == '\n') {
476 bufcat(buf, "\\n", 2);
477 } else if(*arg == '\\') {
478 bufcat(buf, "\\\\", 2);
479 } else {
480 addtobuf(buf, *arg);
481 }
482 }
483 sockqueue(sk, buf, bufdata);
484 free(buf);
485}
486
487static void sendadcf(struct socket *sk, char *arg, ...)
488{
489 char *buf;
490 va_list args;
491
492 va_start(args, arg);
493 buf = vsprintf2(arg, args);
494 va_end(args);
495 if(buf == NULL)
496 return;
497 sendadc(sk, buf);
498 free(buf);
499}
500
501static char **parseadc(char *args)
502{
503 char **retbuf;
504 size_t retbufsize, retbufdata;
505 char *buf;
506 size_t bufsize, bufdata;
507 int state;
508
509 retbuf = NULL;
510 buf = NULL;
511 retbufsize = retbufdata = bufsize = bufdata = 0;
512 state = 0;
513 while(state != 3)
514 {
515 switch(state)
516 {
517 case 0:
518 if(*args == 0)
519 state = 3;
520 else if(*args != ' ')
521 state = 1;
522 break;
523 case 1:
524 if((*args == ' ') || (*args == 0))
525 {
526 addtobuf(buf, 0);
527 addtobuf(retbuf, buf);
528 buf = NULL;
529 bufsize = bufdata = 0;
530 if(*args == 0)
531 state = 3;
532 } else if(*args == '\\') {
533 state = 2;
534 } else {
535 addtobuf(buf, *args);
536 }
537 args++;
538 break;
539 case 2:
540 if(*args == 0)
541 {
542 if(buf != NULL)
543 free(buf);
544 addtobuf(retbuf, NULL);
545 freeparr(retbuf);
546 return(NULL);
f24d5cfb 547 } else if((*args == 's') || (*args == ' ')) {
d3372da9 548 addtobuf(buf, ' ');
549 } else if(*args == 'n') {
550 addtobuf(buf, '\n');
551 } else if(*args == '\\') {
552 addtobuf(buf, '\\');
553 }
a478552c 554 args++;
d3372da9 555 state = 1;
a478552c 556 break;
d3372da9 557 }
558 }
559 if(buf != NULL)
560 free(buf);
561 addtobuf(retbuf, NULL);
562 return(retbuf);
563}
564
565/* Macros useful in command handlers */
566#define skipspace(s) ({if(((s) = strchr((s), ' ')) == NULL) return; else (s)++;})
567#define qstr(sk, str) sockqueue(sk, str, strlen(str))
568#define qstrf(sk, strandargs...) \
569do { \
570 char *__buf__; \
571 if((__buf__ = sprintf2(strandargs)) != NULL) { \
572 sockqueue(sk, __buf__, strlen(__buf__)); \
573 free(__buf__); \
574 } \
575} while(0)
576
577static char *tr(char *str, char *trans)
578{
579 char *p;
580
581 for(; *trans; trans += 2)
582 {
583 for(p = strchr(str, trans[0]); p != NULL; p = strchr(p, trans[0]))
584 *p = trans[1];
585 }
586 return(str);
587}
588
9a2d6cb8 589static char *getadcid(struct dcpeer *peer)
590{
591 char *buf;
592 char *ret;
d57f938a 593 int isfilelist;
9a2d6cb8 594
2a157d1a 595 isfilelist = 0;
d57f938a 596 if(!wcscmp(peer->transfer->path, L"files.xml") || !wcscmp(peer->transfer->path, L"files.xml.bz2") || !wcscmp(peer->transfer->path, L"MyList.DcLst"))
597 isfilelist = 1;
598 if(!isfilelist && (peer->transfer->hash != NULL) && isdchash(peer->transfer->hash) && supports(peer, "tthf"))
9a2d6cb8 599 {
600 buf = base32encode(peer->transfer->hash->buf, 24);
601 ret = sprintf2("TTH/%.39s", buf);
602 free(buf);
603 } else {
604 if((buf = icwcstombs(peer->transfer->path, "UTF-8")) == NULL)
605 return(NULL);
606 ret = pathnmdc2adc(buf);
607 free(buf);
608 }
609 return(ret);
610}
611
612
d3372da9 613static int trresumecb(struct transfer *transfer, wchar_t *cmd, wchar_t *arg, struct dcpeer *peer)
614{
615 if(!wcscmp(cmd, L"resume"))
616 {
617 if(arg == NULL)
618 {
619 flog(LOG_WARNING, "filter returned no position for \"resume\" on transfer %i", transfer->id);
620 freedcpeer(peer);
621 } else {
622 transfer->curpos = wcstol(arg, NULL, 10);
9a2d6cb8 623 peer->hascurpos = 1;
624 requestfile(peer);
d3372da9 625 }
d3372da9 626 return(1);
627 }
628 return(0);
629}
630
9a2d6cb8 631static void sendmynick(struct dcpeer *peer)
d3372da9 632{
1d85f24b 633 struct fnetnode *fn;
d3372da9 634
1d85f24b 635 fn = peer->fn;
636 if(fn == NULL)
637 qstrf(peer->sk, "$MyNick %s|", icswcstombs(confgetstr("cli", "defnick"), peer->charset, "DoldaConnectUser-IN"));
9a2d6cb8 638 else
1d85f24b 639 qstrf(peer->sk, "$MyNick %s|", icswcstombs(fn->mynick, peer->charset, "DoldaConnectUser-IN"));
9a2d6cb8 640}
641
642static void sendpeerlock(struct dcpeer *peer)
643{
1c4b02cd 644 if(peer->dcppemu)
645 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DCPLUSPLUS0.674ABCABC|");
646 else
647 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DOLDA%sABCABCABC|", VERSION);
9a2d6cb8 648}
649
650static void sendsupports(struct dcpeer *peer)
651{
1c4b02cd 652 if(peer->dcppemu)
653 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG |");
654 else
655 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG|");
9a2d6cb8 656}
657
658static void requestfile(struct dcpeer *peer)
659{
660 char *buf;
661
662 if(peer->transfer->size == -1)
d3372da9 663 {
1d85f24b 664 /* Use DCCHARSET for $Get paths until further researched... */
9a2d6cb8 665 if((buf = icswcstombs(peer->transfer->path, DCCHARSET, NULL)) == NULL)
d3372da9 666 {
9a2d6cb8 667 transferseterror(peer->transfer, TRNSE_NOTFOUND);
668 freedcpeer(peer);
d3372da9 669 return;
670 }
9a2d6cb8 671 /* The transfer will be restarted later from
672 * cmd_filelength when it detects that the sizes
673 * don't match. */
674 qstrf(peer->sk, "$Get %s$1|", buf);
675 return;
d3372da9 676 }
9a2d6cb8 677 if((peer->transfer->hash == NULL) && !peer->notthl)
d3372da9 678 {
9a2d6cb8 679 if(supports(peer, "adcget") && supports(peer, "tthl"))
d3372da9 680 {
9a2d6cb8 681 qstr(peer->sk, "$ADCGET");
682 sendadc(peer->sk, "tthl");
683 if((buf = getadcid(peer)) == NULL)
d3372da9 684 {
9a2d6cb8 685 transferseterror(peer->transfer, TRNSE_NOTFOUND);
d3372da9 686 freedcpeer(peer);
687 return;
688 }
9a2d6cb8 689 sendadc(peer->sk, buf);
690 free(buf);
691 sendadc(peer->sk, "0");
692 sendadc(peer->sk, "-1");
693 qstr(peer->sk, "|");
df873cd0 694 peer->fetchingtthl = 1;
9a2d6cb8 695 return;
696 }
697 }
698 if(!peer->hascurpos)
699 {
700 if(forkfilter(peer->transfer))
701 {
702 flog(LOG_WARNING, "could not fork filter for transfer %i: %s", peer->transfer->id, strerror(errno));
703 freedcpeer(peer);
704 return;
d3372da9 705 }
9a2d6cb8 706 CBREG(peer->transfer, trans_filterout, (int (*)(struct transfer *, wchar_t *, wchar_t *, void *))trresumecb, NULL, peer);
707 return;
708 }
709 if(supports(peer, "adcget"))
710 {
711 qstr(peer->sk, "$ADCGET");
712 sendadc(peer->sk, "file");
713 if((buf = getadcid(peer)) == NULL)
714 {
715 transferseterror(peer->transfer, TRNSE_NOTFOUND);
716 freedcpeer(peer);
717 return;
718 }
719 sendadc(peer->sk, buf);
720 free(buf);
721 sendadcf(peer->sk, "%i", peer->transfer->curpos);
722 sendadcf(peer->sk, "%i", peer->transfer->size - peer->transfer->curpos);
723 qstr(peer->sk, "|");
724 } else if(supports(peer, "xmlbzlist")) {
725 if((buf = icswcstombs(peer->transfer->path, "UTF-8", NULL)) == NULL)
726 {
727 transferseterror(peer->transfer, TRNSE_NOTFOUND);
728 freedcpeer(peer);
729 return;
730 }
731 qstrf(peer->sk, "$UGetBlock %i %i %s|", peer->transfer->curpos, peer->transfer->size - peer->transfer->curpos, buf);
d3372da9 732 } else {
1d85f24b 733 /* Use DCCHARSET for $Get paths until further researched... */
9a2d6cb8 734 if((buf = icswcstombs(peer->transfer->path, DCCHARSET, NULL)) == NULL)
d3372da9 735 {
9a2d6cb8 736 transferseterror(peer->transfer, TRNSE_NOTFOUND);
737 freedcpeer(peer);
738 return;
d3372da9 739 }
9a2d6cb8 740 qstrf(peer->sk, "$Get %s$%i|", buf, peer->transfer->curpos + 1);
d3372da9 741 }
742}
743
744static void sendmyinfo(struct socket *sk, struct fnetnode *fn)
745{
746 struct dchub *hub;
747 char *buf;
748 struct fnetnode *cfn;
69757b8c 749 int hn1, hn2, hn3;
d3372da9 750
751 hub = fn->data;
752 qstrf(sk, "$MyINFO $ALL %s ", hub->nativenick);
1d85f24b 753 buf = tr(icswcstombs(confgetstr("dc", "desc"), hub->charset, "Charset_conv_failure"), "$_|_");
d3372da9 754 qstrf(sk, "%s", buf);
69757b8c 755 hn1 = hn2 = hn3 = 0;
d3372da9 756 for(cfn = fnetnodes; cfn != NULL; cfn = cfn->next)
757 {
758 if((cfn->state == FNN_EST) || (cfn->state == FNN_HS))
69757b8c 759 {
760 if(cfn->regstatus == FNNS_OP)
761 hn3++;
762 else if(cfn->regstatus == FNNS_REG)
763 hn2++;
764 else
765 hn1++;
766 }
d3372da9 767 }
69757b8c 768 qstrf(sk, "<%s V:%s,M:%c,H:%i/%i/%i,S:%i>",
1c4b02cd 769 (hub->dcppemu)?"++":"Dolda",
770 (hub->dcppemu)?"0.674":VERSION,
d3372da9 771 (tcpsock == NULL)?'P':'A',
69757b8c 772 hn1, hn2, hn3,
d3372da9 773 confgetint("transfer", "slots")
774 );
775 qstrf(sk, "$ $");
1d85f24b 776 buf = tr(icswcstombs(confgetstr("dc", "speedstring"), hub->charset, "Charset_conv_failure"), "$_|_");
d3372da9 777 qstrf(sk, "%s\x01$", buf);
1d85f24b 778 buf = tr(icswcstombs(confgetstr("dc", "email"), hub->charset, "Charset_conv_failure"), "$_|_");
d3372da9 779 qstrf(sk, "%s$", buf);
780 qstrf(sk, "%llu$|", sharesize);
781}
782
783static void hubhandleaction(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
784{
785 struct dchub *hub;
786
787 hub = fn->data;
788 if(!strcmp(cmd, "$Lock"))
789 {
790 qstrf(sk, "$ValidateNick %s|", hub->nativenick);
791 } else if(!strcmp(cmd, "$Hello")) {
792 if(fn->state == FNN_HS)
793 {
794 qstrf(sk, "$Version 1,0091|");
795 qstrf(sk, "$GetNickList|");
796 sendmyinfo(sk, fn);
797 fnetsetstate(fn, FNN_EST);
798 } else {
799 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
800 }
801 }
802}
803
804static void cmd_lock(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
805{
806 struct dchub *hub;
807 char *key;
808 char *p;
809
810 hub = fn->data;
811 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
812 hub->extended = 1;
813 if((p = strchr(args, ' ')) != NULL)
814 *(p++) = 0;
815 if(hub->extended)
816 {
1c4b02cd 817 if(hub->dcppemu)
818 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock |");
819 else
820 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock|");
d3372da9 821 }
822 key = dcmakekey(args);
823 qstrf(sk, "$Key %s|", key);
824 free(key);
825 hubhandleaction(sk, fn, cmd, args);
826}
827
828static void cmd_hubname(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
829{
830 wchar_t *buf;
831 struct dchub *hub;
832
833 hub = fn->data;
834 if(hub->nativename == NULL)
835 free(hub->nativename);
836 hub->nativename = sstrdup(args);
1d85f24b 837 buf = icmbstowcs(args, hub->charset);
d3372da9 838 fnetsetname(fn, (buf == NULL)?L"Hubname conv error":buf);
839 if(buf != NULL)
840 free(buf);
841 hubhandleaction(sk, fn, cmd, args);
842}
843
844static void cmd_hello(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
845{
846 wchar_t *nick;
847 struct dchub *hub;
848
849 hub = fn->data;
1d85f24b 850 if((nick = icmbstowcs(args, hub->charset)) == NULL)
d3372da9 851 return;
852 if(strcmp(args, hub->nativenick) && (fnetfindpeer(fn, nick) == NULL))
853 fnetaddpeer(fn, nick, nick);
854 free(nick);
855 hubhandleaction(sk, fn, cmd, args);
856}
857
858static void cmd_quit(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
859{
860 wchar_t *nick;
861 struct fnetpeer *peer;
862 struct dchub *hub;
863
864 hub = fn->data;
1d85f24b 865 if((nick = icmbstowcs(args, hub->charset)) == NULL)
d3372da9 866 return;
867 if((peer = fnetfindpeer(fn, nick)) != NULL)
868 fnetdelpeer(peer);
869 free(nick);
870 hubhandleaction(sk, fn, cmd, args);
871}
872
873static void cmd_nicklist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
874{
875 struct dchub *hub;
876 char *p;
877 wchar_t *buf;
878 struct fnetpeer *peer, *npeer;
879
880 hub = fn->data;
881 for(peer = fn->peers; peer != NULL; peer = peer->next)
882 peer->flags.b.delete = 1;
883 while((p = strstr(args, "$$")) != NULL)
884 {
885 *p = 0;
1d85f24b 886 if((buf = icmbstowcs(args, hub->charset)) != NULL)
d3372da9 887 {
888 if((peer = fnetfindpeer(fn, buf)) == NULL)
889 peer = fnetaddpeer(fn, buf, buf);
890 else
891 peer->flags.b.delete = 0;
892 free(buf);
893 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
894 }
895 args = p + 2;
896 }
897 for(peer = fn->peers; peer != NULL; peer = npeer)
898 {
899 npeer = peer->next;
900 if(peer->flags.b.delete)
901 fnetdelpeer(peer);
902 }
903 hubhandleaction(sk, fn, cmd, args);
904}
905
906static void cmd_oplist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
907{
908 struct dchub *hub;
909 char *p;
910 wchar_t *buf;
911 struct fnetpeer *peer;
912
913 hub = fn->data;
914 for(peer = fn->peers; peer != NULL; peer = peer->next)
915 peer->flags.b.op = 0;
916 while((p = strstr(args, "$$")) != NULL)
917 {
918 *p = 0;
1d85f24b 919 if((buf = icmbstowcs(args, hub->charset)) != NULL)
d3372da9 920 {
921 if((peer = fnetfindpeer(fn, buf)) != NULL)
922 peer->flags.b.op = 1;
923 free(buf);
924 }
925 args = p + 2;
926 }
927 hubhandleaction(sk, fn, cmd, args);
928}
929
930static void cmd_myinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
931{
932 char *p, *p2;
933 wchar_t *buf, *wp, *wp2;
934 wchar_t abuf[10];
935 struct fnetpeer *peer;
936 struct dchub *hub;
937
938 hub = fn->data;
939 p = args;
940 if(strncmp(p, "$ALL ", 5))
941 return;
942 p += 5;
943 if((p2 = strchr(p, ' ')) == NULL)
944 return;
945 *p2 = 0;
1d85f24b 946 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 947 return;
948 if((peer = fnetfindpeer(fn, buf)) == NULL)
949 peer = fnetaddpeer(fn, buf, buf);
950 free(buf);
951 p = p2 + 1;
952 if((p2 = strstr(p, "$ $")) == NULL)
953 return;
954 *p2 = 0;
1d85f24b 955 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 956 return;
316e9a13 957 if((wcslen(buf) > 0) && (buf[wcslen(buf) - 1] == L'>') && ((wp = wcsrchr(buf, L'<')) != NULL))
d3372da9 958 {
959 buf[wcslen(buf) - 1] = L'\0';
960 *(wp++) = L'\0';
961 if((wp2 = wcschr(wp, L' ')) != NULL)
962 {
963 *(wp2++) = L'\0';
964 fnetpeersetstr(peer, L"dc-client", wp);
965 wp = wp2;
966 do
967 {
968 if((wp2 = wcschr(wp, L',')) != NULL)
969 *(wp2++) = L'\0';
970 if(wp[1] != L':')
971 continue;
972 swprintf(abuf, 10, L"dc-tag-%lc", wp[0]);
973 fnetpeersetstr(peer, abuf, wp + 2);
974 wp = wp2;
975 } while(wp2 != NULL);
976 }
977 }
978 fnetpeersetstr(peer, L"descr", buf);
979 free(buf);
980 p = p2 + 3;
981 if((p2 = strchr(p, '$')) == NULL)
982 return;
983 *(p2 - 1) = 0;
1d85f24b 984 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 985 return;
986 fnetpeersetstr(peer, L"dc-speed", buf);
987 free(buf);
988 p = p2 + 1;
989 if((p2 = strchr(p, '$')) == NULL)
990 return;
991 *p2 = 0;
1d85f24b 992 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 993 return;
994 fnetpeersetstr(peer, L"email", buf);
995 free(buf);
996 p = p2 + 1;
997 if(strlen(p) < 1)
998 return;
999 fnetpeersetlnum(peer, L"share", strtoll(p, NULL, 10));
1000 hubhandleaction(sk, fn, cmd, args);
1001}
1002
1003/* I do not implement the fully in that I do not disconnect from the
1004 * old hub. I do this since I believe that if the hub owner really
1005 * wants to get rid of us, then it is his responsibility to disconnect
1006 * us. */
1007static void cmd_forcemove(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1008{
1009 struct dchub *hub;
1010 struct fnetnode *newfn;
1011 int freeargs;
1012
1013 hub = fn->data;
1014 if(strchr(args, ':') == NULL)
1015 {
1016 args = strcpy(smalloc(strlen(args) + 5), args);
1017 strcat(args, ":411");
1018 freeargs = 1;
1019 } else {
1020 freeargs = 0;
1021 }
a3a4a3a7 1022 if((newfn = fnetinitconnect(L"dc", fn->owner, args, NULL)) != NULL)
d3372da9 1023 {
1024 linkfnetnode(newfn);
1025 putfnetnode(newfn);
1026 }
1027 hubhandleaction(sk, fn, cmd, args);
1028 if(freeargs)
1029 free(args);
1030}
1031
1d85f24b 1032static char *getdcpath(struct sharecache *node, size_t *retlen, char *charset)
d3372da9 1033{
1034 char *buf, *buf2;
1035 size_t len, len2;
1036
1037 if(node->parent == NULL)
1038 return(NULL);
1039 if(node->parent == shareroot)
1040 {
1d85f24b 1041 if((buf = icwcstombs(node->name, charset)) == NULL)
d3372da9 1042 return(NULL);
1043 if(retlen != NULL)
1044 *retlen = strlen(buf);
1045 return(buf);
1046 } else {
1d85f24b 1047 if((buf2 = icwcstombs(node->name, charset)) == NULL)
d3372da9 1048 return(NULL);
1d85f24b 1049 if((buf = getdcpath(node->parent, &len, charset)) == NULL)
d3372da9 1050 {
1051 free(buf2);
1052 return(NULL);
1053 }
1054 len2 = strlen(buf2);
1055 buf = srealloc(buf, len + 1 + len2 + 1);
1056 buf[len++] = '\\';
1057 strcpy(buf + len, buf2);
1058 buf[len + len2] = 0;
1059 free(buf2);
1060 if(retlen != NULL)
1061 *retlen = len + len2;
1062 return(buf);
1063 }
1064}
1065
1066/*
1067 * This is the main share searching function for Direct Connect
1068 * peers. Feel free to optimize it if you feel the need for it. I
1069 * haven't ever seen it take any noticable CPU time anyway, so I
1070 * haven't felt that need.
1071 *
1072 * It may feel dubious to just return the directory when all terms are
1073 * satisfied rather than all the files in it, but it really benefits
1074 * everyone: Less cycles used for us, less UDP squelching for active
1075 * searchers, and less bandwidth waste for hubs when serving passive
1076 * searchers.
1077 */
1078static void cmd_search(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1079{
1080 int i, done;
1081 struct dchub *hub;
1082 char *p, *p2;
1083 char *prefix, *infix, *postfix, *buf, *buf2;
1084 struct socket *dsk;
1085 struct sockaddr_in addr;
1086 struct sharecache *node;
1087 int minsize, maxsize;
c7185019 1088 int dotth;
1089 size_t buflen;
d3372da9 1090 int termnum, satisfied, skipcheck;
1091 int level, tersat[32];
1092 wchar_t *terms[32];
1093 char hashtth[24];
1094
1095 hub = fn->data;
1096 if((p = strchr(args, ' ')) == NULL)
1097 return;
1098 *(p++) = 0;
1099
1100 memset(terms, 0, sizeof(terms));
1101 prefix = infix = postfix = NULL;
1102 dsk = NULL;
1103 dotth = 0;
1104
1105 if(!strncmp(args, "Hub:", 4))
1106 {
1107 if(!strcmp(cmd, "$MultiSearch"))
1108 goto out;
1109 if(!strcmp(args + 4, hub->nativenick))
1110 goto out;
1111 prefix = sprintf2("$SR %s ", hub->nativenick);
1112 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1113 postfix = sprintf2(" (%s)\005%s|", formataddress(fn->sk->remote, fn->sk->remotelen), args + 4);
1114 dsk = sk;
1115 getsock(dsk);
1116 } else {
1117 if((p2 = strchr(args, ':')) == NULL)
1118 goto out;
1119 *(p2++) = 0;
1120 addr.sin_family = AF_INET;
1121 if(!inet_aton(args, &addr.sin_addr))
1122 goto out;
1123 addr.sin_port = htons(atoi(p2));
1124 prefix = sprintf2("$SR %s ", hub->nativenick);
1125 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1126 postfix = sprintf2(" (%s)|", formataddress(fn->sk->remote, fn->sk->remotelen));
1127 netdgramconn(dsk = netdupsock(udpsock), (struct sockaddr *)&addr, sizeof(addr));
1128 }
1129
1130 minsize = maxsize = -1;
1131 if(*p == 0)
1132 goto out;
1133 if(*(p++) == 'T')
1134 minsize = 0;
1135 if(*(p++) != '?')
1136 goto out;
1137 if(*p == 0)
1138 goto out;
9d8cf743 1139 if((*(p++) == 'T') && (minsize == 0))
d3372da9 1140 {
1141 maxsize = 0;
1142 minsize = -1;
1143 }
1144 if(*(p++) != '?')
1145 goto out;
1146 if((p2 = strchr(p, '?')) == NULL)
1147 goto out;
1148 *(p2++) = 0;
1149 if(minsize == 0)
1150 minsize = atoi(p);
1151 if(maxsize == 0)
1152 maxsize = atoi(p);
1153 p = p2 + 1;
1154 if(*(p++) != '?')
1155 goto out;
1156 termnum = 0;
1157 p2 = p;
1158 done = 0;
1159 while(!done)
1160 {
1161 if((*p2 == 0) || (*p2 == '$'))
1162 {
1163 if(*p2 == 0)
1164 done = 1;
1165 else
1166 *p2 = 0;
1167 if(*p)
1168 {
1169 if(!dotth && !strncmp(p, "TTH:", 4))
1170 {
1171 dotth = 1;
2dd01e6e 1172 if(((buf = base32decode(p + 4, &buflen)) == NULL) || (buflen != 24))
1173 {
1174 free(buf);
d3372da9 1175 goto out;
2dd01e6e 1176 }
d3372da9 1177 memcpy(hashtth, buf, 24);
1178 free(buf);
1179 } else {
1d85f24b 1180 if((terms[termnum] = icmbstowcs(p, hub->charset)) != NULL)
d3372da9 1181 termnum++;
1182 }
1183 }
1184 p = p2 + 1;
1185 if(termnum == 32)
1186 break;
1187 }
1188 p2++;
1189 }
1190
1191 node = shareroot->child;
1192 level = 0;
1193 for(i = 0; i < termnum; i++)
1194 tersat[i] = -1;
1195 satisfied = 0;
1196 while(1)
1197 {
1198 skipcheck = 0;
1199 if(node->f.b.type == FILE_REG)
1200 {
1201 if((minsize >= 0) && (node->size < minsize))
1202 skipcheck = 1;
1203 if((maxsize >= 0) && (node->size > maxsize))
1204 skipcheck = 1;
1205 }
1206 if(!skipcheck && dotth)
1207 {
1208 if((node->f.b.type != FILE_REG) || (node->f.b.hastth && memcmp(hashtth, node->hashtth, 24)))
1209 skipcheck = 1;
1210 }
1211 if(!skipcheck)
1212 {
1213 for(i = 0; i < termnum; i++)
1214 {
1215 if(tersat[i] >= 0)
1216 continue;
1217 if(wcsexists(node->name, terms[i]))
1218 {
1219 tersat[i] = level;
1220 satisfied++;
1221 } else if(node->child == NULL) {
1222 break;
1223 }
1224 }
1225 }
1226 if(!skipcheck && (satisfied == termnum))
1227 {
1d85f24b 1228 /* Use DCCHARSET in $Get paths until further researched... */
1229 if((buf = getdcpath(node, NULL, DCCHARSET)) != NULL)
d3372da9 1230 {
1231 if(node->f.b.hastth)
1232 {
1233 buf2 = base32encode(node->hashtth, 24);
1234 qstrf(dsk, "%s%s\005%i%sTTH:%.39s%s", prefix, buf, node->size, infix, buf2, postfix);
1235 free(buf2);
1236 } else {
1237 qstrf(dsk, "%s%s\005%i%s%s%s", prefix, buf, node->size, infix, hub->nativename, postfix);
1238 }
1239 free(buf);
1240 }
1241 }
1242 if((!skipcheck && (satisfied == termnum)) || (node->child == NULL))
1243 {
1244 while(node->next == NULL)
1245 {
1246 if((node = node->parent) == shareroot)
1247 break;
1248 level--;
1249 }
1250 if(node == shareroot)
1251 break;
1252 for(i = 0; i < termnum; i++)
1253 {
1254 if(tersat[i] >= level)
1255 {
1256 tersat[i] = -1;
1257 satisfied--;
1258 }
1259 }
1260 node = node->next;
1261 } else {
1262 node = node->child;
1263 level++;
1264 }
1265 }
1266
1267 hubhandleaction(sk, fn, cmd, args);
1268
1269 out:
1270 if(dsk != NULL)
1271 putsock(dsk);
1272 if(prefix != NULL)
1273 free(prefix);
1274 if(infix != NULL)
1275 free(infix);
1276 if(postfix != NULL)
1277 free(postfix);
1278 for(i = 0; (i < 32) && (terms[i] != NULL); i++)
1279 free(terms[i]);
1280}
1281
1282static void cmd_connecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1283{
1284 char *p;
1285 struct dchub *hub;
1286 struct socket *newsk;
1287 struct sockaddr_in addr;
1288
1289 hub = fn->data;
1290 if((p = strchr(args, ' ')) == NULL)
1291 return;
1292 *(p++) = 0;
1293 if(strcmp(args, hub->nativenick))
1294 return;
1295 addr.sin_family = AF_INET;
1296 args = p;
1297 if((p = strchr(args, ':')) == NULL)
1298 return;
1299 *(p++) = 0;
1300 addr.sin_port = htons(atoi(p));
1301 if(!inet_aton(args, &addr.sin_addr))
1302 return;
1303 newsk = netcsconn((struct sockaddr *)&addr, sizeof(addr), (void (*)(struct socket *, int, void *))peerconnect, fn);
1304 getfnetnode(fn);
1305 hubhandleaction(sk, fn, cmd, args);
1306}
1307
1308static void sendctm(struct socket *sk, char *nick)
1309{
1310 struct sockaddr *addr;
1311 socklen_t addrlen;
1312
1313 if(tcpsock == NULL)
1314 return;
9b5acc18 1315 if(sockgetremotename2(tcpsock, sk, &addr, &addrlen) < 0)
d3372da9 1316 return;
1317 if(addr->sa_family == AF_INET)
1318 qstrf(sk, "$ConnectToMe %s %s|", nick, formataddress(addr, addrlen));
1319 else
1320 flog(LOG_WARNING, "Direct Connect TCP socket is suddenly not AF_INET, but %i", addr->sa_family);
1321 free(addr);
1322}
1323
1324static void cmd_revconnecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1325{
1326 struct dchub *hub;
1327 char *p;
1328
1329 hub = fn->data;
1330 if((p = strchr(args, ' ')) == NULL)
1331 return;
1332 *(p++) = 0;
1333 if(strcmp(p, hub->nativenick))
1334 return;
1335 sendctm(sk, args);
1336 expectpeer(args, fn);
1337 hubhandleaction(sk, fn, cmd, args);
1338}
1339
1340static void cmd_getnetinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1341{
1342 struct dchub *hub;
1343 struct fnetnode *node;
1344 int numhubs;
1345
1346 hub = fn->data;
1347 numhubs = 0;
1348 for(node = fnetnodes; node != NULL; node = node->next)
1349 {
1350 if(node->state == FNN_EST)
1351 numhubs++;
1352 }
1353 qstrf(sk, "$NetInfo %i$%i$%c$0|", confgetint("transfer", "slots"), numhubs, (tcpsock == NULL)?'P':'A');
1354 hubhandleaction(sk, fn, cmd, args);
1355}
1356
1357static void cmd_to(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1358{
1359 struct dchub *hub;
1360 char *p, *p2;
1361
1362 hub = fn->data;
1363 p = args;
1364 if((p2 = strchr(p, ' ')) == NULL)
1365 return;
1366 *(p2++) = 0;
1367 p = p2;
1368 if((p2 = strchr(p, ' ')) == NULL)
1369 return;
1370 *(p2++) = 0;
1371 if(strcmp(p, "From:"))
1372 return;
1373 p = p2;
1374 if((p2 = strstr(p, " $")) == NULL)
1375 return;
1376 *p2 = 0;
1377 p2 += 2;
1378 hubrecvchat(fn->sk, fn, p, p2);
1379 hubhandleaction(sk, fn, cmd, args);
1380}
1381
1382static void cmd_sr(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1383{
1384 struct dchub *hub;
d86b7a9f 1385 char *p, *p2, *buf;
d3372da9 1386 char *nick, *filename, *hubname;
1387 int size, slots;
d86b7a9f 1388 size_t buflen;
d3372da9 1389 struct srchres *sr;
1390 wchar_t *wnick, *wfile;
1391
1392 hub = fn->data;
1393 nick = p = args;
1394 if((p2 = strchr(p, ' ')) == NULL)
1395 return;
1396 *p2 = 0;
1397 p = p2 + 1;
1398 filename = p;
1399 if((p2 = strchr(p, 5)) == NULL)
1400 return;
1401 *p2 = 0;
1402 p = p2 + 1;
1403 if((p2 = strchr(p, ' ')) == NULL)
1404 return;
1405 *p2 = 0;
1406 size = atoi(p);
1407 p = p2 + 1;
1408 if((p2 = strchr(p, '/')) == NULL)
1409 return;
1410 *p2 = 0;
1411 slots = atoi(p);
1412 p = p2 + 1;
1413 if((p2 = strchr(p, 5)) == NULL)
1414 return;
1415 p = p2 + 1;
1416 hubname = p;
1417 if((p2 = strstr(p, " (")) == NULL)
1418 return;
1419 *p2 = 0;
1d85f24b 1420 if((wnick = icmbstowcs(nick, hub->charset)) == NULL)
d3372da9 1421 return;
1d85f24b 1422 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 1423 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
1424 {
1425 free(wnick);
1426 return;
1427 }
1428 sr = newsrchres(&dcnet, wfile, wnick);
1429 if(sr->peernick != NULL)
1430 free(sr->peernick);
1431 sr->peernick = swcsdup(wnick);
1432 sr->size = size;
1433 sr->slots = slots;
1434 free(wfile);
1435 free(wnick);
d86b7a9f 1436 if(!strncmp(hubname, "TTH:", 4))
1437 {
1438 if((buf = base32decode(hubname + 4, &buflen)) != NULL)
1439 {
1440 if(buflen == 24)
1441 sr->hash = newhash(L"TTH", 24, buf);
1442 free(buf);
1443 }
1444 }
d3372da9 1445 getfnetnode(sr->fn = fn);
1446 submitsrchres(sr);
1447 freesrchres(sr);
1448 hubhandleaction(sk, fn, cmd, args);
1449}
1450
1451static void cmd_usercommand(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1452{
1453 /* Do nothing for now. */
1454}
1455
48509089 1456static void cmd_getpass(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1457{
1458 struct dchub *hub;
1c4b02cd 1459 wchar_t *pw;
48509089 1460 char *mbspw;
1461
1462 hub = fn->data;
1c4b02cd 1463 pw = wpfind(fn->args, L"password");
1d85f24b 1464 if((pw == NULL) || ((mbspw = icwcstombs(pw, hub->charset)) == NULL))
48509089 1465 {
1466 killfnetnode(fn);
1467 return;
1468 }
1469 qstrf(sk, "$MyPass %s|", mbspw);
1470 free(mbspw);
fcd0627b 1471 fn->regstatus = FNNS_REG;
48509089 1472 hubhandleaction(sk, fn, cmd, args);
1473}
1474
c9b3ad74 1475static void cmd_logedin(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1476{
1477 struct dchub *hub;
1478
1479 hub = fn->data;
fcd0627b 1480 fn->regstatus = FNNS_OP;
c9b3ad74 1481 hubhandleaction(sk, fn, cmd, args);
1482}
1483
d3372da9 1484static void cmd_mynick(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1485{
9a2d6cb8 1486 struct dcexppeer *expect;
1c4b02cd 1487 struct dchub *hub;
9a2d6cb8 1488
d3372da9 1489 if(peer->nativename != NULL)
1490 free(peer->nativename);
1491 peer->nativename = sstrdup(args);
1492 if(peer->wcsname != NULL)
1493 free(peer->wcsname);
1d85f24b 1494 if((peer->wcsname = icmbstowcs(peer->nativename, peer->charset)) == NULL)
d3372da9 1495 {
1496 freedcpeer(peer);
1497 return;
1498 }
9a2d6cb8 1499 if(peer->accepted)
1500 {
1501 for(expect = expected; expect != NULL; expect = expect->next)
1502 {
1503 if(!strcmp(expect->nick, args))
1504 break;
1505 }
1506 if(expect == NULL)
1507 {
1508 peer->fn = NULL;
1509 } else {
1c4b02cd 1510 hub = expect->fn->data;
9a2d6cb8 1511 peer->fn = expect->fn;
1512 getfnetnode(peer->fn);
1c4b02cd 1513 peer->dcppemu = hub->dcppemu;
9a2d6cb8 1514 freeexppeer(expect);
1515 }
1516 }
d3372da9 1517}
1518
1519static void cmd_direction(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1520{
1521 char *p;
9a2d6cb8 1522 int mydir;
1523 struct transfer *transfer;
d3372da9 1524
1525 if((p = strchr(args, ' ')) == NULL)
1526 return;
1527 *p = 0;
1528 if(!strcmp(args, "Upload"))
9a2d6cb8 1529 mydir = TRNSD_DOWN;
d3372da9 1530 if(!strcmp(args, "Download"))
9a2d6cb8 1531 mydir = TRNSD_UP;
1532 if(peer->accepted)
1533 {
1534 if((peer->transfer == NULL) || (mydir != peer->direction))
1535 {
1536 freedcpeer(peer);
1537 return;
1538 }
1b14d3d8 1539 if(peer->direction == TRNSD_DOWN)
1540 requestfile(peer);
9a2d6cb8 1541 } else {
1542 if(peer->wcsname == NULL)
1543 {
1544 freedcpeer(peer);
1545 return;
1546 }
1547 peer->direction = mydir;
1548 if(peer->direction == TRNSD_UP)
1549 {
01663fd9 1550 if(confgetint("transfer", "ulquota") && hasupload(&dcnet, peer->wcsname))
1551 {
1552 freedcpeer(peer);
1553 return;
1554 }
9a2d6cb8 1555 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1556 } else {
1557 if((transfer = finddownload(peer->wcsname)) == NULL)
1558 {
1559 freedcpeer(peer);
1560 return;
1561 }
1562 transferattach(transfer, &dctransfer, peer);
1563 transfersetstate(transfer, TRNS_HS);
1564 }
1565 transfersetnick(transfer, peer->wcsname);
1566 peer->transfer = transfer;
1567 if(peer->extended)
1568 sendsupports(peer);
1569 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1570 if(peer->key != NULL)
1571 qstrf(sk, "$Key %s|", peer->key);
1572 if(peer->direction == TRNSD_DOWN)
1573 requestfile(peer);
1574 }
d3372da9 1575}
1576
1577static void cmd_peerlock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1578{
9a2d6cb8 1579 char *p, *key;
1580 struct transfer *transfer;
d3372da9 1581
1582 if((p = strchr(args, ' ')) == NULL)
1583 return;
1584 *p = 0;
1585 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
1586 peer->extended = 1;
9a2d6cb8 1587 key = dcmakekey(args);
1588 if(peer->accepted)
1589 {
1590 if(peer->wcsname == NULL)
1591 {
1592 freedcpeer(peer);
1593 return;
1594 }
1595 sendmynick(peer);
1596 sendpeerlock(peer);
1597 if(peer->extended)
1598 sendsupports(peer);
1599 if((transfer = finddownload(peer->wcsname)) == NULL)
1600 {
01663fd9 1601 if(confgetint("transfer", "ulquota") && hasupload(&dcnet, peer->wcsname))
1602 {
1603 freedcpeer(peer);
1604 return;
1605 }
9a2d6cb8 1606 peer->direction = TRNSD_UP;
1607 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1608 } else {
1609 peer->direction = TRNSD_DOWN;
1610 transferattach(transfer, &dctransfer, peer);
1611 transfersetstate(transfer, TRNS_HS);
1612 }
1613 transfersetnick(transfer, peer->wcsname);
1614 peer->transfer = transfer;
1615 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1616 qstrf(sk, "$Key %s|", key);
62da2712 1617 free(key);
9a2d6cb8 1618 } else {
1619 if(peer->key != NULL)
1620 free(peer->key);
1621 peer->key = key;
1622 }
d3372da9 1623}
1624
1625static void cmd_key(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1626{
9a2d6cb8 1627 /* NOP */
1628}
1629
1630static void startdl(struct dcpeer *peer)
1631{
1e9d82b1 1632 if(peer->timeout != NULL)
1633 canceltimer(peer->timeout);
9a2d6cb8 1634 peer->state = PEER_TRNS;
1635 transferstartdl(peer->transfer, peer->sk);
1636 peer->sk->readcb = (void (*)(struct socket *, void *))transread;
1637 peer->sk->errcb = (void (*)(struct socket *, int, void *))transerr;
1638}
1639
1640static void startul(struct dcpeer *peer)
1641{
1e9d82b1 1642 if(peer->timeout != NULL)
1643 canceltimer(peer->timeout);
9a2d6cb8 1644 peer->state = PEER_TRNS;
1645 transferstartul(peer->transfer, peer->sk);
1646 peer->sk->writecb = (void (*)(struct socket *, void *))transwrite;
d3372da9 1647}
1648
1649static void cmd_filelength(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1650{
1651 int size;
1fc81821 1652 struct transfer *transfer;
d3372da9 1653
1654 if(peer->transfer == NULL)
1655 {
1656 freedcpeer(peer);
1657 return;
1658 }
1659 size = atoi(args);
9a2d6cb8 1660 if(peer->transfer->size != size)
d3372da9 1661 {
d3372da9 1662 transfersetsize(peer->transfer, size);
1fc81821 1663 transfer = peer->transfer;
d3372da9 1664 freedcpeer(peer);
1fc81821 1665 trytransferbypeer(transfer->fnet, transfer->peerid);
d3372da9 1666 return;
1667 }
9a2d6cb8 1668 startdl(peer);
1669 qstr(peer->sk, "$Send|");
d3372da9 1670}
1671
1672static void cmd_error(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1673{
df873cd0 1674 if(peer->fetchingtthl)
1675 {
1676 peer->fetchingtthl = 0;
1677 peer->notthl = 1;
1678 requestfile(peer);
1679 return;
1680 }
d3372da9 1681 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1682 {
1683 transferseterror(peer->transfer, TRNSE_NOTFOUND);
1684 resettransfer(peer->transfer);
1685 return;
1686 }
1687 freedcpeer(peer);
1688}
1689
1690static void cmd_maxedout(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1691{
1692 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1693 {
1694 transferseterror(peer->transfer, TRNSE_NOSLOTS);
1695 resettransfer(peer->transfer);
1696 return;
1697 }
1698 freedcpeer(peer);
1699}
1700
1701static struct
1702{
1703 char *name;
1704 char **file;
1705 void (*func)(void);
1706} lists[] =
1707{
1708 {"MyList.DcLst", &hmlistname, updatehmlist},
1709 {"files.xml", &xmllistname, updatexmllist},
1710 {"files.xml.bz2", &xmlbz2listname, updatexmlbz2list},
1711 {NULL, NULL}
1712};
1713
1714static int openfilelist(char *name)
1715{
1716 int i, fd;
1717 int errnobak;
1718
1719 for(i = 0; lists[i].name != NULL; i++)
1720 {
1721 if(!strcmp(name, lists[i].name))
1722 break;
1723 }
1724 errno = 0;
1725 if(lists[i].name == NULL)
1726 return(-1);
1727 fd = -1;
1728 if((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0))
1729 lists[i].func();
1730 if((fd < 0) && ((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0)))
1731 {
1732 errnobak = errno;
1733 flog(LOG_ERR, "could not open filelist tempfile: %s", strerror(errno));
1734 errno = errnobak;
1735 return(-1);
1736 }
1737 return(fd);
1738}
1739
1740static struct sharecache *findbytth(char *tth32)
1741{
1742 char *buf;
1743 size_t buflen;
1744 struct sharecache *node;
1745
1746 if((buf = base32decode(tth32, &buflen)) == NULL)
1747 return(NULL);
1748 if(buflen != 24)
1749 {
1750 free(buf);
1751 return(NULL);
1752 }
1753 for(node = shareroot->child; node != NULL; node = nextscnode(node))
1754 {
1755 if(node->f.b.hastth && !memcmp(node->hashtth, buf, 24))
1756 break;
1757 }
1758 free(buf);
1759 return(node);
1760}
1761
1762static struct sharecache *resdcpath(char *path, char *charset, char sep)
1763{
1764 struct sharecache *node;
1765 char *p, *p2;
1766
1767 node = shareroot;
1768 p = path;
1769 while(p != NULL)
1770 {
1771 if((p2 = strchr(p, sep)) != NULL)
1772 *(p2++) = 0;
1773 if((node = findcache(node, icsmbstowcs(p, charset, L""))) == NULL)
1774 return(NULL);
1775 p = p2;
1776 }
1777 return(node);
1778}
1779
1780static void cmd_get(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1781{
1782 int offset;
1783 char *p, *buf;
1784 wchar_t *buf2;
1785 struct sharecache *node;
1786 struct socket *lesk;
1787 int fd;
1788 struct stat sb;
1789
1790 if(peer->transfer == NULL)
1791 {
1792 freedcpeer(peer);
1793 return;
1794 }
1795 if((p = strchr(args, '$')) == NULL)
1796 {
1797 freedcpeer(peer);
1798 return;
1799 }
1800 *(p++) = 0;
1801 if((offset = (atoi(p) - 1)) < 0)
1802 {
1803 freedcpeer(peer);
1804 return;
1805 }
1806 if(((fd = openfilelist(args)) < 0) && (errno != 0))
1807 {
1808 qstr(sk, "$Error Could not send file list|");
1809 freedcpeer(peer);
1810 return;
1811 } else if(fd >= 0) {
1812 if((buf2 = icsmbstowcs(args, DCCHARSET, NULL)) != NULL)
1813 transfersetpath(peer->transfer, buf2);
f00d7432 1814 peer->transfer->flags.b.minislot = 1;
d3372da9 1815 }
1816 if(fd < 0)
1817 {
1d85f24b 1818 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 1819 if((node = resdcpath(args, DCCHARSET, '\\')) == NULL)
1820 {
1821 qstrf(sk, "$Error File not in share|");
1822 freedcpeer(peer);
1823 return;
1824 }
1825 if((fd = opensharecache(node)) < 0)
1826 {
1827 qstrf(sk, "$Error %s|", strerror(errno));
1828 freedcpeer(peer);
1829 return;
1830 }
1831 buf = getfspath(node);
1832 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1833 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1834 else
1835 transfersetpath(peer->transfer, buf2);
1836 free(buf);
1837 }
1838 if(fstat(fd, &sb) < 0)
1839 {
1840 close(fd);
1841 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1842 qstrf(sk, "$Error|");
1843 freedcpeer(peer);
1844 return;
1845 }
f00d7432 1846 if(sb.st_size < 65536)
1847 peer->transfer->flags.b.minislot = 1;
1848 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
565006d1 1849 close(fd);
f00d7432 1850 qstr(sk, "$MaxedOut|");
1851 freedcpeer(peer);
1852 return;
1853 }
d3372da9 1854 if((offset != 0) && (lseek(fd, offset, SEEK_SET) < 0))
1855 {
1856 close(fd);
1857 qstrf(sk, "$Error Offset out of range|");
1858 freedcpeer(peer);
1859 return;
1860 }
1861 lesk = wrapsock(fd);
1862 transferprepul(peer->transfer, sb.st_size, offset, -1, lesk);
1863 putsock(lesk);
1864 qstrf(sk, "$FileLength %i|", peer->transfer->size);
d3372da9 1865}
1866
1867static void cmd_send(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1868{
1869 if(peer->transfer == NULL)
1870 {
1871 freedcpeer(peer);
1872 return;
1873 }
1874 if(peer->transfer->localend == NULL)
1875 {
1876 freedcpeer(peer);
1877 return;
1878 }
1879 peer->ptclose = 1;
9a2d6cb8 1880 startul(peer);
d3372da9 1881}
1882
1883static void cmd_supports(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1884{
1885 int i;
1886 char *p, *p2;
1887 char **arr;
1888 size_t arrsize, arrdata;
1889
1890 if(peer->supports != NULL)
1891 {
1892 for(i = 0; peer->supports[i] != NULL; i++)
1893 free(peer->supports[i]);
1894 free(peer->supports);
1895 }
1896 arr = NULL;
1897 arrsize = arrdata = 0;
1898 p = args;
1899 do
1900 {
1901 if((p2 = strchr(p, ' ')) != NULL)
1902 *(p2++) = 0;
1903 if(*p == 0)
1904 continue;
1905 addtobuf(arr, sstrdup(p));
1906 } while((p = p2) != NULL);
1907 addtobuf(arr, NULL);
1908 peer->supports = arr;
d3372da9 1909}
1910
1911static void cmd_getblock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1912{
1913 int fd;
1914 char *p, *p2;
1915 int start, numbytes;
1916 char *charset, *buf;
1917 wchar_t *buf2;
1918 struct sharecache *node;
1919 struct stat sb;
1920 struct socket *lesk;
1921
1922 if(peer->transfer == NULL)
1923 {
1924 freedcpeer(peer);
1925 return;
1926 }
1927 p = args;
1928 if((p2 = strchr(p, ' ')) == NULL)
1929 {
1930 freedcpeer(peer);
1931 return;
1932 }
1933 *(p2++) = 0;
1934 start = atoi(p);
1935 p = p2;
1936 if((p2 = strchr(p, ' ')) == NULL)
1937 {
1938 freedcpeer(peer);
1939 return;
1940 }
1941 *(p2++) = 0;
1942 numbytes = atoi(p);
1943 p = p2;
1944 if(!strcmp(cmd, "$UGetBlock") || !strcmp(cmd, "$UGetZBlock"))
1945 charset = "UTF-8";
1946 else
1d85f24b 1947 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 1948 charset = DCCHARSET;
1949 if(!strcmp(cmd, "$GetZBlock") || !strcmp(cmd, "$UGetZBlock"))
1950 initcompress(peer, CPRS_ZLIB);
1951 if(((fd = openfilelist(p)) < 0) && (errno != 0))
1952 {
1953 qstr(sk, "$Error Could not send file list|");
1954 return;
1955 } else if(fd >= 0) {
1956 if((buf2 = icsmbstowcs(args, charset, NULL)) != NULL)
1957 transfersetpath(peer->transfer, buf2);
f00d7432 1958 peer->transfer->flags.b.minislot = 1;
d3372da9 1959 }
1960 if(fd < 0)
1961 {
d3372da9 1962 if((node = resdcpath(p, charset, '\\')) == NULL)
1963 {
1964 qstr(sk, "$Error File not in cache|");
1965 return;
1966 }
1967 if((fd = opensharecache(node)) < 0)
1968 {
1969 qstrf(sk, "$Error %s|", strerror(errno));
1970 return;
1971 }
1972 buf = getfspath(node);
1973 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1974 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1975 else
1976 transfersetpath(peer->transfer, buf2);
1977 free(buf);
1978 }
1979 if(fstat(fd, &sb) < 0)
1980 {
1981 close(fd);
1982 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1983 qstr(sk, "$Error|");
1984 return;
1985 }
f00d7432 1986 if(sb.st_size < 65536)
1987 peer->transfer->flags.b.minislot = 1;
1988 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
565006d1 1989 close(fd);
f00d7432 1990 qstr(sk, "$MaxedOut|");
1991 return;
1992 }
d3372da9 1993 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
1994 {
1995 close(fd);
1996 qstr(sk, "$Error Offset out of range|");
1997 return;
1998 }
1999 if((numbytes < 0) || (start + numbytes > sb.st_size))
2000 numbytes = sb.st_size - start;
2001 lesk = wrapsock(fd);
2002 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2003 putsock(lesk);
2004 qstrf(sk, "$Sending %i|", numbytes);
9a2d6cb8 2005 startul(peer);
d3372da9 2006}
2007
2008static void cmd_adcget(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2009{
2010 int i;
2011 char **argv, *buf;
2012 int start, numbytes;
2013 struct sharecache *node;
2014 struct stat sb;
2015 struct socket *lesk;
2016 wchar_t *wbuf;
2017 int fd;
2018
2019 if(peer->transfer == NULL)
2020 {
2021 freedcpeer(peer);
2022 return;
2023 }
2024 if((argv = parseadc(args)) == NULL)
2025 {
2026 freedcpeer(peer);
2027 return;
2028 }
2029 if(parrlen(argv) < 4)
2030 {
2031 freedcpeer(peer);
2032 goto out;
2033 }
2034 start = atoi(argv[2]);
2035 numbytes = atoi(argv[3]);
2036 node = NULL;
2037 fd = -1;
2038 if(((fd = openfilelist(argv[1])) < 0) && (errno != 0))
2039 {
2040 qstr(sk, "$Error Could not send file list|");
2041 goto out;
2042 } else if(fd >= 0) {
2043 if((wbuf = icsmbstowcs(argv[1], "UTF-8", NULL)) != NULL)
2044 transfersetpath(peer->transfer, wbuf);
f00d7432 2045 peer->transfer->flags.b.minislot = 1;
d3372da9 2046 }
2047 if(fd < 0)
2048 {
d3372da9 2049 if(!strncmp(argv[1], "TTH/", 4))
2050 {
2051 if((node = findbytth(argv[1] + 4)) == NULL)
2052 {
2053 qstr(sk, "$Error File not in cache|");
2054 goto out;
2055 }
2056 } else {
9a2d6cb8 2057 if((node = resdcpath((argv[1][0] == '/')?(argv[1] + 1):(argv[1]), "UTF-8", '/')) == NULL)
d3372da9 2058 {
2059 qstr(sk, "$Error File not in cache|");
2060 goto out;
2061 }
2062 }
2063 if((fd = opensharecache(node)) < 0)
2064 {
2065 qstrf(sk, "$Error %s|", strerror(errno));
2066 goto out;
2067 }
2068 buf = getfspath(node);
2069 if((wbuf = icsmbstowcs(buf, NULL, NULL)) == NULL)
2070 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
2071 else
2072 transfersetpath(peer->transfer, wbuf);
2073 free(buf);
2074 }
2075 if(!strcmp(argv[0], "file"))
2076 {
2077 for(i = 4; argv[i] != NULL; i++)
2078 {
2079 if(!strcmp(argv[i], "ZL1"))
2080 initcompress(peer, CPRS_ZLIB);
2081 }
2082 if(fstat(fd, &sb) < 0)
2083 {
2084 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
2085 qstr(sk, "$Error|");
2086 goto out;
2087 }
f00d7432 2088 if(sb.st_size < 65536)
2089 peer->transfer->flags.b.minislot = 1;
2090 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
2091 qstr(sk, "$MaxedOut|");
2092 goto out;
2093 }
d3372da9 2094 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
2095 {
2096 qstr(sk, "$Error Offset out of range|");
2097 goto out;
2098 }
2099 if((numbytes < 0) || (start + numbytes > sb.st_size))
2100 numbytes = sb.st_size - start;
2101 lesk = wrapsock(fd);
2102 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2103 putsock(lesk);
2104 fd = -1;
2105 qstr(sk, "$ADCSND");
2106 sendadc(sk, "file");
2107 sendadc(sk, argv[1]);
2108 sendadcf(sk, "%i", start);
2109 sendadcf(sk, "%i", numbytes);
2110 if(peer->compress == CPRS_ZLIB)
2111 sendadc(sk, "ZL1");
2112 qstr(sk, "|");
9a2d6cb8 2113 startul(peer);
d3372da9 2114 } else if(!strcmp(argv[0], "tthl")) {
2115 /*
2116 * XXX: Implement full TTHL support.
2117 *
2118 * In the meantime, this is better than nothing, since it at
2119 * least allows fetching of the TTH root if it isn't already
2120 * known.
2121 */
2122 if(node == NULL)
2123 {
2124 qstr(sk, "$Error no TTHL data for virtual files|");
2125 goto out;
2126 }
2127 qstr(sk, "$ADCSND");
2128 sendadc(sk, "tthl");
2129 sendadc(sk, argv[1]);
2130 sendadc(sk, "0");
2131 sendadc(sk, "24");
2132 qstr(sk, "|");
2133 sockqueue(sk, node->hashtth, 24);
2134 } else {
2135 qstr(sk, "$Error Namespace not implemented|");
2136 goto out;
2137 }
d3372da9 2138
2139 out:
2140 if(fd >= 0)
2141 close(fd);
2142 freeparr(argv);
2143}
2144
9a2d6cb8 2145static void handletthl(struct dcpeer *peer)
2146{
2147 char buf[24];
2148
2149 while(peer->inbufdata >= 24)
2150 {
2151 pushtigertree(&peer->tth, peer->inbuf);
2152 memmove(peer->inbuf, peer->inbuf + 24, peer->inbufdata -= 24);
e52006fe 2153 peer->curread += 24;
9a2d6cb8 2154 }
e52006fe 2155 if(peer->curread >= peer->totalsize)
9a2d6cb8 2156 {
1e9d82b1 2157 if(peer->timeout == NULL)
2158 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
9a2d6cb8 2159 peer->state = PEER_CMD;
2160 synctigertree(&peer->tth);
2161 restigertree(&peer->tth, buf);
2162 transfersethash(peer->transfer, newhash(L"TTH", 24, buf));
2163 requestfile(peer);
2164 }
2165}
2166
2167static void cmd_adcsnd(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2168{
2169 char **argv;
2170 int start, numbytes;
2171
2172 if(peer->transfer == NULL)
2173 {
2174 freedcpeer(peer);
2175 return;
2176 }
2177 if((argv = parseadc(args)) == NULL)
2178 {
2179 freedcpeer(peer);
2180 return;
2181 }
2182 if(parrlen(argv) < 4)
2183 {
2184 freedcpeer(peer);
2185 goto out;
2186 }
2187 start = atoi(argv[2]);
2188 numbytes = atoi(argv[3]);
2189 if(!strcmp(argv[0], "tthl"))
2190 {
2191 if((start != 0) || (numbytes % 24 != 0))
2192 {
2193 /* Weird. Bail out. */
2194 freedcpeer(peer);
2195 goto out;
2196 }
1e9d82b1 2197 if(peer->timeout != NULL)
2198 canceltimer(peer->timeout);
9a2d6cb8 2199 peer->state = PEER_TTHL;
2200 peer->totalsize = numbytes;
2201 peer->curread = 0;
df873cd0 2202 peer->fetchingtthl = 0;
9a2d6cb8 2203 inittigertree(&peer->tth);
2204 handletthl(peer);
2205 } else if(!strcmp(argv[0], "file")) {
2206 if(start != peer->transfer->curpos)
2207 {
2208 freedcpeer(peer);
2209 goto out;
2210 }
2211 if(start + numbytes != peer->transfer->size)
2212 {
2213 transfersetsize(peer->transfer, start + numbytes);
2214 freedcpeer(peer);
2215 goto out;
2216 }
2217 startdl(peer);
e52006fe 2218 if(peer->inbufdata > 0)
2219 {
2220 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2221 peer->inbufdata = 0;
2222 transread(sk, peer);
2223 }
9a2d6cb8 2224 } else {
2225 /* We certainly didn't request this...*/
2226 freedcpeer(peer);
2227 goto out;
2228 }
2229
2230 out:
2231 freeparr(argv);
2232}
2233
2234static void cmd_sending(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2235{
2236 int numbytes;
2237
2238 if(peer->transfer == NULL)
2239 {
2240 freedcpeer(peer);
2241 return;
2242 }
2243 numbytes = atoi(args);
2244 if(peer->transfer->size - peer->transfer->curpos != numbytes)
2245 {
2246 transfersetsize(peer->transfer, peer->transfer->curpos + numbytes);
2247 freedcpeer(peer);
2248 return;
2249 }
2250 startdl(peer);
0d8c93cb 2251 if(peer->inbufdata > 0)
2252 {
2253 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2254 peer->inbufdata = 0;
2255 transread(sk, peer);
2256 }
9a2d6cb8 2257}
2258
d3372da9 2259/*
2260Hub skeleton:
2261static void cmd_(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
2262{
2263 struct dchub *hub;
2264
2265 hub = fn->data;
2266 hubhandleaction(sk, fn, cmd, args);
2267}
2268
2269Peer skeleton:
2270static void cmd_(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2271{
d3372da9 2272}
2273
2274*/
2275
2276static int hubreqconn(struct fnetpeer *peer)
2277{
2278 struct dchub *hub;
2279 char *mbsnick;
2280
2281 if((peer->fn->state != FNN_EST) || (peer->fn->fnet != &dcnet))
2282 {
2283 errno = EINVAL;
2284 return(1);
2285 }
2286 if((hub = peer->fn->data) == NULL)
2287 {
2288 errno = EFAULT;
2289 return(1);
2290 }
1d85f24b 2291 if((mbsnick = icwcstombs(peer->id, hub->charset)) == NULL)
d3372da9 2292 return(1); /* Shouldn't happen, of course, but who knows... */
2293 if(tcpsock != NULL)
2294 {
2295 sendctm(peer->fn->sk, mbsnick);
2296 expectpeer(mbsnick, peer->fn);
2297 } else {
2298 qstrf(peer->fn->sk, "$RevConnectToMe %s %s|", hub->nativenick, mbsnick);
2299 }
2300 free(mbsnick);
2301 return(0);
2302}
2303
2304static int hubsendchat(struct fnetnode *fn, int public, wchar_t *to, wchar_t *string)
2305{
2306 struct dchub *hub;
2307 char *mbsstring, *mbsto;
2308
2309 hub = fn->data;
1d85f24b 2310 if((mbsto = icwcstombs(to, hub->charset)) == NULL)
d3372da9 2311 {
2312 errno = EILSEQ;
2313 return(1);
2314 }
1d85f24b 2315 if((mbsstring = icwcstombs(string, hub->charset)) == NULL)
d3372da9 2316 {
2317 errno = EILSEQ;
2318 return(1);
2319 }
2320 if((strchr(mbsto, '|') != NULL) || (strchr(mbsto, ' ') != NULL))
2321 {
2322 free(mbsto);
2323 free(mbsstring);
2324 errno = ESRCH;
2325 return(1);
2326 }
2327 if(strchr(mbsstring, '|') != NULL)
2328 {
2329 free(mbsto);
2330 free(mbsstring);
2331 errno = EILSEQ;
2332 return(1);
2333 }
2334 if(public)
2335 {
2336 if(*to == L'\0')
2337 {
2338 qstrf(fn->sk, "<%s> %s|", hub->nativenick, mbsstring);
2339 } else {
2340 qstrf(fn->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2341 }
2342 } else {
2343 qstrf(fn->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2344 }
2345 free(mbsto);
2346 free(mbsstring);
2347 return(0);
2348}
2349
2350static void findsizelimit(struct sexpr *sexpr, int *min, int *max)
2351{
2352 int minl, maxl, minr, maxr, retmin, retmax;
2353
2354 switch(sexpr->op)
2355 {
2356 case SOP_AND:
2357 findsizelimit(sexpr->l, &minl, &maxl);
2358 findsizelimit(sexpr->r, &minr, &maxr);
2359 retmin = (minl > minr)?minl:minr;
2360 if((maxl != -1) && (maxr != -1))
2361 retmax = (maxl < maxr)?maxl:maxr;
2362 else if(maxl != -1)
2363 retmax = maxl;
2364 else if(maxr != -1)
2365 retmax = maxr;
2366 else
2367 retmax = -1;
2368 break;
2369 case SOP_OR:
2370 findsizelimit(sexpr->l, &minl, &maxl);
2371 findsizelimit(sexpr->r, &minr, &maxr);
2372 retmin = (minl < minr)?minl:minr;
2373 if((maxl == -1) || (maxr == -1))
2374 retmax = -1;
2375 else
2376 retmax = (maxl > maxr)?maxl:maxr;
2377 break;
2378 case SOP_NOT:
2379 findsizelimit(sexpr->l, &minl, &maxl);
2380 if((minl == 0) && (maxl == -1)) /* Interval is unspecified */
2381 {
2382 retmin = 0;
2383 retmax = -1;
2384 } else if((minl == 0) && (maxl != -1)) {
2385 retmin = maxl + 1;
2386 retmax = -1;
2387 } else if((minl != 0) && (maxl == -1)) {
2388 retmin = 0;
2389 retmax = minl - 1;
2390 } else { /* This would yield two seperate intervals, which DC cannot handle */
2391 retmin = 0;
2392 retmax = -1;
2393 }
2394 case SOP_SIZELT:
2395 retmin = 0;
2396 retmax = sexpr->d.n - 1;
2397 break;
2398 case SOP_SIZEEQ:
2399 retmin = sexpr->d.n;
2400 retmax = sexpr->d.n;
2401 break;
2402 case SOP_SIZEGT:
2403 retmin = sexpr->d.n + 1;
2404 retmax = -1;
2405 break;
2406 default:
2407 retmin = 0;
2408 retmax = -1;
2409 break;
2410 }
2411 if(min != NULL)
2412 *min = retmin;
2413 if(max != NULL)
2414 *max = retmax;
2415}
2416
9d8cf743 2417static struct hash *findsehash(struct sexpr *sexpr)
2418{
2419 struct hash *h1, *h2;
2420
2421 switch(sexpr->op)
2422 {
2423 case SOP_AND:
2424 if((h1 = findsehash(sexpr->l)) != NULL)
2425 return(h1);
2426 if((h1 = findsehash(sexpr->r)) != NULL)
2427 return(h1);
2428 break;
2429 case SOP_OR:
2430 h1 = findsehash(sexpr->l);
2431 h2 = findsehash(sexpr->r);
2432 if(hashcmp(h1, h2))
2433 return(h1);
2434 break;
2435 case SOP_HASHIS:
2436 if(!wcscmp(sexpr->d.hash->algo, L"TTH"))
2437 return(sexpr->d.hash);
2438 default:
2439 break;
2440 }
2441 return(NULL);
2442}
2443
d3372da9 2444static int hubsearch(struct fnetnode *fn, struct search *srch, struct srchfnnlist *ln)
2445{
2446 struct dchub *hub;
2447 struct wcslist *list, *cur;
2448 char *sstr, *buf, *p;
2449 size_t sstrsize, sstrdata;
2450 struct sockaddr *name;
2451 socklen_t namelen;
2452 int minsize, maxsize;
9d8cf743 2453 struct hash *hash;
d3372da9 2454
2455 hub = fn->data;
2456 if((fn->state != FNN_EST) || (fn->sk == NULL) || (fn->sk->state != SOCK_EST))
2457 return(1);
2458 list = findsexprstrs(srch->sexpr);
2459 findsizelimit(srch->sexpr, &minsize, &maxsize);
9d8cf743 2460 hash = findsehash(srch->sexpr);
d3372da9 2461 if((minsize != 0) && (maxsize != -1))
2462 {
2463 /* Choose either minsize or maxsize by trying to determine
2464 * which choice will be most restrictive. The result can be
2465 * approximative at best anyway, so don't try too hard... */
2466 if((50000000 - maxsize) > (minsize - 50000000))
2467 minsize = 0;
2468 else
2469 maxsize = -1;
2470 }
d3372da9 2471 sstr = NULL;
2472 sstrsize = sstrdata = 0;
9d8cf743 2473 if((hash != NULL) && (hash->len == 24))
d3372da9 2474 {
9d8cf743 2475 /* Prioritize hash searches above all else */
2476 bufcat(sstr, "F?T?0?9?TTH:", 12);
2477 buf = base32encode(hash->buf, hash->len);
2478
2479 bufcat(sstr, buf, 39);
2480 free(buf);
2481 } else {
2482 if(minsize != 0)
d3372da9 2483 {
9d8cf743 2484 sizebuf2(sstr, sstrdata + 32, 1);
fe42d689 2485 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?F?%i?1?", minsize);
9d8cf743 2486 } else if(maxsize != -1) {
2487 sizebuf2(sstr, sstrdata + 32, 1);
fe42d689 2488 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?T?%i?1?", maxsize);
9d8cf743 2489 } else {
2490 bufcat(sstr, "F?F?0?1?", 8);
2491 }
2492 if(list != NULL)
2493 {
2494 for(cur = list; cur != NULL; cur = cur->next)
d3372da9 2495 {
1d85f24b 2496 /* Use DCCHARSET in $Get paths until further researched... */
9d8cf743 2497 if((buf = icwcstombs(cur->str, DCCHARSET)) == NULL)
2498 {
2499 /* Can't find anything anyway if the search expression
2500 * requires characters outside DC's charset. There's
2501 * nothing technically wrong with the search itself,
2502 * however, so return success. This should be
2503 * considered as an optimization. */
2504 freesl(&list);
2505 if(sstr != NULL)
2506 free(sstr);
2507 return(0);
2508 }
2509 if(cur != list)
2510 addtobuf(sstr, '$');
2511 /*
2512 * It probably doesn't hurt if buf contains any extra
2513 * dollar signs - it will just result in extra search
2514 * terms, and the extraneous results will be filtered by
2515 * the search layer anyway. It hurts if it contains any
2516 * pipes, though, so let's sell them for money.
2517 */
2518 for(p = buf; *p; p++)
2519 {
2520 if(*p == '|')
2521 *p = '$';
2522 }
2523 bufcat(sstr, buf, strlen(buf));
2524 free(buf);
d3372da9 2525 }
9d8cf743 2526 } else {
2527 /* Will match all files... :-/ */
2528 addtobuf(sstr, '.');
d3372da9 2529 }
d3372da9 2530 }
2531 addtobuf(sstr, 0);
2532 if(tcpsock != NULL)
2533 {
9b5acc18 2534 if(sockgetremotename2(udpsock, fn->sk, &name, &namelen) < 0)
d3372da9 2535 {
2536 flog(LOG_WARNING, "cannot get address of UDP socket");
2537 } else {
9d8cf743 2538 qstrf(fn->sk, "$Search %s %s|", formataddress(name, namelen), sstr);
d3372da9 2539 free(name);
2540 }
2541 } else {
9d8cf743 2542 qstrf(fn->sk, "$Search Hub:%s %s|", hub->nativenick, sstr);
d3372da9 2543 }
2544 free(sstr);
2545 freesl(&list);
2546 fn->lastsrch = time(NULL);
2547 return(0);
2548}
2549
2550#undef skipcmd
2551#undef qstr
2552#undef qstrf
2553
2554#define cc(c) ((void (*)(struct socket *, void *, char *, char *))(c))
8b930085 2555static struct command hubcmds[] =
d3372da9 2556{
2557 {"$Lock", cc(cmd_lock)},
2558 {"$HubName", cc(cmd_hubname)},
2559 {"$Hello", cc(cmd_hello)},
2560 {"$Quit", cc(cmd_quit)},
2561 {"$NickList", cc(cmd_nicklist)},
2562 {"$OpList", cc(cmd_oplist)},
2563 {"$MyINFO", cc(cmd_myinfo)},
2564 {"$ForceMove", cc(cmd_forcemove)},
2565 {"$Search", cc(cmd_search)},
2566 {"$MultiSearch", cc(cmd_search)},
2567 {"$ConnectToMe", cc(cmd_connecttome)},
2568 {"$RevConnectToMe", cc(cmd_revconnecttome)},
2569 {"$GetNetInfo", cc(cmd_getnetinfo)},
2570 {"$To:", cc(cmd_to)},
2571 {"$SR", cc(cmd_sr)},
2572 {"$UserCommand", cc(cmd_usercommand)},
48509089 2573 {"$GetPass", cc(cmd_getpass)},
c9b3ad74 2574 {"$LogedIn", cc(cmd_logedin)}, /* sic */
d3372da9 2575 {NULL, NULL}
2576};
2577
8b930085 2578static struct command peercmds[] =
d3372da9 2579{
2580 {"$MyNick", cc(cmd_mynick)},
2581 {"$Lock", cc(cmd_peerlock)},
2582 {"$Direction", cc(cmd_direction)},
2583 {"$Key", cc(cmd_key)},
2584 {"$FileLength", cc(cmd_filelength)},
2585 {"$Error", cc(cmd_error)},
2586 {"$MaxedOut", cc(cmd_maxedout)},
2587 {"$Get", cc(cmd_get)},
2588 {"$Send", cc(cmd_send)},
2589 {"$Supports", cc(cmd_supports)},
2590 {"$GetBlock", cc(cmd_getblock)},
2591 {"$UGetBlock", cc(cmd_getblock)},
2592 {"$GetZBlock", cc(cmd_getblock)},
2593 {"$UGetZBlock", cc(cmd_getblock)},
2594 {"$ADCGET", cc(cmd_adcget)},
9a2d6cb8 2595 {"$ADCSND", cc(cmd_adcsnd), 1},
2596 {"$Sending", cc(cmd_sending), 1},
d3372da9 2597 {NULL, NULL}
2598};
2599#undef cc
2600
2601static void dctransdetach(struct transfer *transfer, struct dcpeer *peer)
2602{
2603 CBUNREG(transfer, trans_filterout, peer);
2604 if(peer->freeing)
2605 return;
2606 peer->transfer = NULL;
2607 freedcpeer(peer);
2608}
2609
2610static void dctransgotdata(struct transfer *transfer, struct dcpeer *peer)
2611{
2612 int ret;
2613 void *buf;
c7185019 2614 unsigned char outbuf[1024];
d3372da9 2615 z_stream *cstr;
2616 size_t bufsize;
2617
2618 if((peer->state == PEER_TRNS) || (peer->state == PEER_SYNC))
2619 {
2620 if(sockqueuesize(peer->sk) < 65536)
2621 {
2622 if((buf = transfergetdata(transfer, &bufsize)) != NULL)
2623 {
2624 if(peer->compress == CPRS_NONE)
2625 {
2626 sockqueue(peer->sk, buf, bufsize);
2627 } else if(peer->compress == CPRS_ZLIB) {
2628 cstr = peer->cprsdata;
2629 cstr->next_in = buf;
2630 cstr->avail_in = bufsize;
2631 while(cstr->avail_in > 0)
2632 {
2633 cstr->next_out = outbuf;
2634 cstr->avail_out = sizeof(outbuf);
2635 if((ret = deflate(cstr, 0)) != Z_OK)
2636 {
2637 flog(LOG_WARNING, "bug? deflate() did not return Z_OK (but rather %i)", ret);
2638 freedcpeer(peer);
2639 return;
2640 }
2641 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2642 }
2643 }
2644 free(buf);
2645 }
2646 if(peer->state == PEER_SYNC)
2647 {
2648 if(peer->compress == CPRS_ZLIB)
2649 {
2650 cstr = peer->cprsdata;
2651 cstr->next_in = NULL;
2652 cstr->avail_in = 0;
2653 do
2654 {
2655 cstr->next_out = outbuf;
2656 cstr->avail_out = sizeof(outbuf);
2657 ret = deflate(cstr, Z_FINISH);
2658 if((ret != Z_OK) && (ret != Z_STREAM_END))
2659 {
2660 flog(LOG_WARNING, "bug? deflate(Z_FINISH) did not return Z_OK (but rather %i)", ret);
2661 freedcpeer(peer);
2662 return;
2663 }
2664 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2665 } while(ret != Z_STREAM_END);
2666 }
2667 if(peer->ptclose)
2668 {
2669 freedcpeer(peer);
2670 } else {
1e9d82b1 2671 if(peer->timeout == NULL)
2672 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 2673 peer->state = PEER_CMD;
2674 endcompress(peer);
2675 transfersetstate(transfer, TRNS_HS);
2676 socksettos(peer->sk, confgetint("fnet", "fnptos"));
bfc261fe 2677 transfer->flags.b.minislot = 0;
d3372da9 2678 peer->sk->writecb = NULL;
2679 }
2680 }
2681 }
2682 }
2683}
2684
2685static void dctransendofdata(struct transfer *transfer, struct dcpeer *peer)
2686{
2687 peer->state = PEER_SYNC;
2688 dctransgotdata(transfer, peer);
2689}
2690
2691static void dcwantdata(struct transfer *transfer, struct dcpeer *peer)
2692{
2693 if(transferdatasize(transfer) < 65536)
2694 peer->sk->ignread = 0;
2695}
2696
2697static void transread(struct socket *sk, struct dcpeer *peer)
2698{
2699 void *buf;
2700 size_t bufsize;
2701 struct transfer *transfer;
2702
2703 if((buf = sockgetinbuf(sk, &bufsize)) == NULL)
2704 return;
2705 if(peer->transfer == NULL)
2706 {
2707 free(buf);
2708 freedcpeer(peer);
2709 return;
2710 }
2711 transferputdata(peer->transfer, buf, bufsize);
2712 free(buf);
2713 if(peer->transfer->curpos >= peer->transfer->size)
2714 {
2715 transfer = peer->transfer;
2716 transferdetach(transfer);
2717 transferendofdata(transfer);
2718 return;
2719 }
2720 if(transferdatasize(peer->transfer) > 65535)
2721 sk->ignread = 1;
2722}
2723
2724static void transerr(struct socket *sk, int err, struct dcpeer *peer)
2725{
2726 struct transfer *transfer;
2727
2728 if((transfer = peer->transfer) == NULL)
2729 {
2730 freedcpeer(peer);
2731 return;
2732 }
2733 transferdetach(transfer);
2734 transferendofdata(transfer);
2735}
2736
2737static void transwrite(struct socket *sk, struct dcpeer *peer)
2738{
2739 if((peer->state != PEER_TRNS) && (peer->state != PEER_SYNC))
2740 return;
2741 if(peer->transfer == NULL)
2742 {
2743 freedcpeer(peer);
2744 return;
2745 }
2746 dctransgotdata(peer->transfer, peer);
2747}
2748
2749static void udpread(struct socket *sk, void *data)
2750{
d86b7a9f 2751 char *buf, *p, *p2, *hashbuf;
2752 size_t buflen, hashlen;
d3372da9 2753 char *nick, *filename, *hubname;
99a28d47 2754 struct sockaddr_in hubaddr;
d3372da9 2755 int size, slots;
2756 struct fnetnode *fn, *myfn;
2757 struct dchub *hub;
2758 struct srchres *sr;
2759 wchar_t *wnick, *wfile;
d86b7a9f 2760 struct hash *hash;
d3372da9 2761
2762 if((buf = sockgetinbuf(sk, &buflen)) == NULL)
2763 return;
2764 buf = srealloc(buf, buflen + 1);
2765 buf[buflen] = 0;
2766 if(!strncmp(buf, "$SR ", 4))
2767 {
2768 p = buf + 4;
2769 nick = p;
2770 if((p2 = strchr(p, ' ')) == NULL)
2771 {
2772 free(buf);
2773 return;
2774 }
2775 *p2 = 0;
2776 p = p2 + 1;
2777 filename = p;
2778 if((p2 = strchr(p, 5)) == NULL)
2779 {
2780 free(buf);
2781 return;
2782 }
2783 *p2 = 0;
2784 p = p2 + 1;
2785 if((p2 = strchr(p, ' ')) == NULL)
2786 {
2787 free(buf);
2788 return;
2789 }
2790 *p2 = 0;
2791 size = atoi(p);
2792 p = p2 + 1;
2793 if((p2 = strchr(p, '/')) == NULL)
2794 {
2795 free(buf);
2796 return;
2797 }
2798 *p2 = 0;
2799 slots = atoi(p);
2800 p = p2 + 1;
2801 if((p2 = strchr(p, 5)) == NULL)
2802 {
2803 free(buf);
2804 return;
2805 }
2806 p = p2 + 1;
2807 hubname = p;
2808 if((p2 = strstr(p, " (")) == NULL)
2809 {
2810 free(buf);
2811 return;
2812 }
2813 *p2 = 0;
99a28d47 2814 p = p2 + 2;
2815 if((p2 = strchr(p, ':')) == NULL)
2816 {
2817 free(buf);
2818 return;
2819 }
870bf4ad 2820 *(p2++) = 0;
99a28d47 2821 hubaddr.sin_family = AF_INET;
2822 if(!inet_aton(p, &hubaddr.sin_addr))
2823 {
2824 free(buf);
2825 return;
2826 }
2827 p = p2;
2828 if((p2 = strchr(p, ')')) == NULL)
2829 {
2830 free(buf);
2831 return;
2832 }
2833 *p2 = 0;
2834 hubaddr.sin_port = htons(atoi(p));
1d85f24b 2835 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 2836 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
2837 {
d3372da9 2838 free(buf);
2839 return;
2840 }
2841 myfn = NULL;
d86b7a9f 2842 hash = NULL;
2843 if(!strncmp(hubname, "TTH:", 4))
d3372da9 2844 {
d86b7a9f 2845 if((hashbuf = base32decode(hubname + 4, &hashlen)) != NULL)
2846 {
2847 if(hashlen == 24)
2848 hash = newhash(L"TTH", 24, hashbuf);
2849 free(hashbuf);
2850 }
2851 } else {
2852 for(fn = fnetnodes; fn != NULL; fn = fn->next)
d3372da9 2853 {
d86b7a9f 2854 if((fn->fnet == &dcnet) && ((hub = fn->data) != NULL))
d3372da9 2855 {
d86b7a9f 2856 if((hub->nativename != NULL) && !strcmp(hub->nativename, hubname))
d3372da9 2857 {
d86b7a9f 2858 if(myfn == NULL)
2859 {
2860 myfn = fn;
2861 } else {
2862 myfn = NULL;
2863 break;
2864 }
d3372da9 2865 }
2866 }
2867 }
2868 }
99a28d47 2869 if(myfn == NULL)
2870 {
2871 for(fn = fnetnodes; fn != NULL; fn = fn->next)
2872 {
39cc1b93 2873 if((fn->fnet == &dcnet) && (fn->sk != NULL) && addreq(fn->sk->remote, (struct sockaddr *)&hubaddr))
99a28d47 2874 {
2875 myfn = fn;
2876 break;
2877 }
2878 }
2879 }
1d85f24b 2880 hub = NULL;
2881 if(myfn != NULL)
2882 hub = myfn->data;
2883 if((wnick = icmbstowcs(nick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
2884 {
2885 free(buf);
2886 return;
2887 }
d3372da9 2888 sr = newsrchres(&dcnet, wfile, wnick);
2889 if(sr->peernick != NULL)
2890 free(sr->peernick);
2891 sr->peernick = swcsdup(wnick);
2892 sr->size = size;
2893 sr->slots = slots;
2894 free(wfile);
2895 free(wnick);
2896 if(myfn != NULL)
2897 getfnetnode(sr->fn = myfn);
d86b7a9f 2898 if(hash != NULL)
2899 sr->hash = hash;
d3372da9 2900 submitsrchres(sr);
2901 freesrchres(sr);
2902 }
2903 free(buf);
2904}
2905
2906static void hubread(struct socket *sk, struct fnetnode *fn)
2907{
2908 struct dchub *hub;
2909 char *newbuf;
2910 size_t datalen;
2911 char *p;
2912
2913 hub = (struct dchub *)fn->data;
2914 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
2915 return;
2916 if(hub->inbufdata > 500000) /* Discard possible malicious data */
2917 hub->inbufdata = 0;
2918 sizebuf2(hub->inbuf, hub->inbufdata + datalen, 1);
2919 memcpy(hub->inbuf + hub->inbufdata, newbuf, datalen);
2920 free(newbuf);
2921 p = hub->inbuf + hub->inbufdata;
2922 hub->inbufdata += datalen;
2923 while((datalen > 0) && ((p = memchr(p, '|', datalen)) != NULL))
2924 {
2925 *(p++) = 0;
2926 newqcmd(&hub->queue, hub->inbuf);
2927 memmove(hub->inbuf, p, hub->inbufdata -= p - hub->inbuf);
2928 datalen = hub->inbufdata;
2929 p = hub->inbuf;
2930 }
2931}
2932
2933static void huberr(struct socket *sk, int err, struct fnetnode *fn)
2934{
2935 killfnetnode(fn);
2936}
2937
2938static int hubsetnick(struct fnetnode *fn, wchar_t *newnick)
2939{
2940 struct dchub *hub;
2941 char *buf;
2942
2943 hub = fn->data;
1d85f24b 2944 if((buf = icwcstombs(newnick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
d3372da9 2945 return(1);
2946 if((strchr(buf, ' ') != NULL) || (strchr(buf, '|') != NULL) || (strchr(buf, '$') != NULL))
2947 {
2948 free(buf);
2949 return(1);
2950 }
2951 if(hub == NULL) /* Not yet connected */
2952 {
2953 free(buf);
2954 return(0);
2955 }
2956 if(hub->nativenick != NULL)
2957 free(hub->nativenick);
2958 hub->nativenick = buf;
2959 return(0);
2960}
2961
2962static struct dchub *newdchub(struct fnetnode *fn)
2963{
2964 struct dchub *new;
1c4b02cd 2965 wchar_t *emu;
1d85f24b 2966 wchar_t *wcharset;
2967 char *charset;
d3372da9 2968
2969 new = smalloc(sizeof(*new));
2970 memset(new, 0, sizeof(*new));
2971 fn->data = new;
1c4b02cd 2972 if(confgetint("dc", "dcppemu"))
2973 new->dcppemu = 1;
2974 if((emu = wpfind(fn->args, L"dcppemu")) != NULL)
2975 {
2976 if(*emu == L'y')
2977 new->dcppemu = 1;
2978 if(*emu == L'n')
2979 new->dcppemu = 0;
2980 }
1d85f24b 2981 charset = NULL;
2982 if((wcharset = wpfind(fn->args, L"charset")) != NULL)
2983 {
2984 if((charset = icwcstombs(wcharset, "US-ASCII")) != NULL)
2985 {
2986 if(!havecharset(charset))
2987 {
2988 free(charset);
2989 charset = NULL;
2990 }
2991 }
2992 }
2993 if(charset != NULL)
2994 new->charset = charset;
2995 else
2996 new->charset = sstrdup(DCCHARSET);
d3372da9 2997 if(hubsetnick(fn, fn->mynick))
2998 fnetsetnick(fn, L"DoldaConnectUser-IN");
2999 /* IN as in Invalid Nick */
3000 return(new);
3001}
3002
3003static struct dcpeer *newdcpeer(struct socket *sk)
3004{
3005 struct dcpeer *new;
3006
3007 new = smalloc(sizeof(*new));
3008 memset(new, 0, sizeof(*new));
3009 new->transfer = NULL;
3010 getsock(sk);
3011 new->sk = sk;
1c4b02cd 3012 if(confgetint("dc", "dcppemu"))
3013 new->dcppemu = 1;
d3372da9 3014 new->next = peers;
3015 new->prev = NULL;
3016 if(peers != NULL)
3017 peers->prev = new;
3018 peers = new;
3019 numdcpeers++;
3020 return(new);
3021}
3022
3023static void freedcpeer(struct dcpeer *peer)
3024{
3025 int i;
3026 struct qcommand *qcmd;
3027
3028 peer->freeing = 1;
3029 if(peers == peer)
3030 peers = peer->next;
3031 if(peer->next != NULL)
3032 peer->next->prev = peer->prev;
3033 if(peer->prev != NULL)
3034 peer->prev->next = peer->next;
3035 if(peer->transfer != NULL)
3036 {
3037 if(peer->transfer->dir == TRNSD_UP)
3038 peer->transfer->close = 1;
3039 if(peer->transfer->dir == TRNSD_DOWN)
3040 resettransfer(peer->transfer);
3041 transferdetach(peer->transfer);
3042 }
1e9d82b1 3043 if(peer->timeout != NULL)
3044 canceltimer(peer->timeout);
d3372da9 3045 if(peer->sk->data == peer)
3046 peer->sk->data = NULL;
3047 peer->sk->readcb = NULL;
3048 peer->sk->writecb = NULL;
3049 peer->sk->errcb = NULL;
3050 putsock(peer->sk);
3051 endcompress(peer);
3052 if(peer->supports != NULL)
3053 {
3054 for(i = 0; peer->supports[i] != NULL; i++)
3055 free(peer->supports[i]);
3056 free(peer->supports);
3057 }
d3372da9 3058 if(peer->inbuf != NULL)
3059 free(peer->inbuf);
3060 if(peer->key != NULL)
3061 free(peer->key);
3062 if(peer->wcsname != NULL)
3063 free(peer->wcsname);
3064 if(peer->nativename != NULL)
3065 free(peer->nativename);
1d85f24b 3066 if(peer->charset != NULL)
3067 free(peer->charset);
d3372da9 3068 if(peer->fn != NULL)
3069 putfnetnode(peer->fn);
3070 while((qcmd = ulqcmd(&peer->queue)) != NULL)
3071 freeqcmd(qcmd);
3072 free(peer);
3073 numdcpeers--;
3074}
3075
3076static void hubconnect(struct fnetnode *fn)
3077{
3078 fn->sk->readcb = (void (*)(struct socket *, void *))hubread;
3079 fn->sk->errcb = (void (*)(struct socket *, int, void *))huberr;
3080 getfnetnode(fn);
3081 fn->data = newdchub(fn);
3082 fn->sk->data = fn;
3083 return;
3084}
3085
3086static void hubdestroy(struct fnetnode *fn)
3087{
3088 struct dchub *hub;
3089 struct qcommand *qcmd;
3090
3091 hub = (struct dchub *)fn->data;
9d131372 3092 if((fn->sk != NULL) && (fn->sk->data == fn))
d3372da9 3093 {
9d131372 3094 fn->sk->data = NULL;
3095 putfnetnode(fn);
d3372da9 3096 }
3097 if(hub == NULL)
3098 return;
3099 while((qcmd = ulqcmd(&hub->queue)) != NULL)
3100 freeqcmd(qcmd);
3101 if(hub->nativename != NULL)
3102 free(hub->nativename);
3103 if(hub->nativenick != NULL)
3104 free(hub->nativenick);
1d85f24b 3105 if(hub->charset != NULL)
3106 free(hub->charset);
d3372da9 3107 if(hub->inbuf != NULL)
3108 free(hub->inbuf);
3109 free(hub);
3110}
3111
3112static wchar_t *dcbasename(wchar_t *filename)
3113{
3114 wchar_t *ret;
3115
3116 if((ret = wcsrchr(filename, L'\\')) != NULL)
3117 return(ret + 1);
3118 return(filename);
3119}
3120
3121static struct transferiface dctransfer =
3122{
3123 .detach = (void (*)(struct transfer *, void *))dctransdetach,
3124 .gotdata = (void (*)(struct transfer *, void *))dctransgotdata,
3125 .endofdata = (void (*)(struct transfer *, void *))dctransendofdata,
3126 .wantdata = (void (*)(struct transfer *, void *))dcwantdata
3127};
3128
3129static struct fnet dcnet =
3130{
3131 .name = L"dc",
3132 .connect = hubconnect,
3133 .destroy = hubdestroy,
3134 .setnick = hubsetnick,
3135 .reqconn = hubreqconn,
3136 .sendchat = hubsendchat,
3137 .search = hubsearch,
3138 .filebasename = dcbasename
3139};
3140
3141static void peerread(struct socket *sk, struct dcpeer *peer)
3142{
3143 char *newbuf, *p;
3144 size_t datalen;
9a2d6cb8 3145 struct command *cmd;
d3372da9 3146
3147 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
3148 return;
3149 sizebuf2(peer->inbuf, peer->inbufdata + datalen, 1);
3150 memcpy(peer->inbuf + peer->inbufdata, newbuf, datalen);
3151 free(newbuf);
d3372da9 3152 peer->inbufdata += datalen;
9a2d6cb8 3153 if(peer->state == PEER_CMD)
d3372da9 3154 {
d3372da9 3155 p = peer->inbuf;
9a2d6cb8 3156 while((peer->inbufdata > 0) && (p = memchr(peer->inbuf, '|', peer->inbufdata)) != NULL)
3157 {
3158 *(p++) = 0;
3159 newqcmd(&peer->queue, peer->inbuf);
3160 for(cmd = peercmds; cmd->handler != NULL; cmd++)
3161 {
5eee9d66 3162 if(!memcmp(peer->inbuf, cmd->name, strlen(cmd->name)) && ((peer->inbuf[strlen(cmd->name)] == ' ') || (peer->inbuf[strlen(cmd->name)] == '|')))
9a2d6cb8 3163 break;
3164 }
5eee9d66 3165 memmove(peer->inbuf, p, peer->inbufdata -= p - peer->inbuf);
9a2d6cb8 3166 if(cmd->stop)
3167 {
3168 peer->state = PEER_STOP;
3169 break;
3170 }
9a2d6cb8 3171 }
3172 } else if(peer->state == PEER_TTHL) {
3173 handletthl(peer);
d3372da9 3174 }
3175}
3176
3177static void peererror(struct socket *sk, int err, struct dcpeer *peer)
3178{
3179 freedcpeer(peer);
3180}
3181
3182static void peerconnect(struct socket *sk, int err, struct fnetnode *fn)
3183{
3184 struct dcpeer *peer;
1c4b02cd 3185 struct dchub *hub;
d3372da9 3186
3187 if(err != 0)
3188 {
3189 putfnetnode(fn);
ff625695 3190 putsock(sk);
d3372da9 3191 return;
3192 }
1c4b02cd 3193 hub = fn->data;
d3372da9 3194 peer = newdcpeer(sk);
3195 peer->fn = fn;
3196 peer->accepted = 0;
1c4b02cd 3197 peer->dcppemu = hub->dcppemu;
d3372da9 3198 sk->readcb = (void (*)(struct socket *, void *))peerread;
3199 sk->errcb = (void (*)(struct socket *, int, void *))peererror;
3200 sk->data = peer;
3201 socksettos(sk, confgetint("fnet", "fnptos"));
d3372da9 3202 putsock(sk);
1e9d82b1 3203 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
9a2d6cb8 3204 sendmynick(peer);
3205 sendpeerlock(peer);
d3372da9 3206}
3207
3208static void peeraccept(struct socket *sk, struct socket *newsk, void *data)
3209{
3210 struct dcpeer *peer;
3211
3212 peer = newdcpeer(newsk);
3213 peer->accepted = 1;
3214 newsk->readcb = (void (*)(struct socket *, void *))peerread;
3215 newsk->errcb = (void (*)(struct socket *, int, void *))peererror;
3216 newsk->data = peer;
3217 socksettos(newsk, confgetint("fnet", "fnptos"));
1e9d82b1 3218 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 3219}
3220
3221static void updatehmlist(void)
3222{
3223 int i, lev, ic, ret;
3224 struct sharecache *node;
3225 char *buf, *buf2, numbuf[32];
3226 size_t bufsize, bufdata;
3227 int fd, ibuf;
3228
3229 bufdata = 0;
3230 buf = smalloc(bufsize = 65536);
3231 node = shareroot->child;
3232 lev = 0;
3233 while(1)
3234 {
3235 ic = 0;
1d85f24b 3236 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 3237 if((buf2 = icwcstombs(node->name, DCCHARSET)) != NULL)
3238 {
3239 for(i = 0; i < lev; i++)
3240 addtobuf(buf, 9);
3241 bufcat(buf, buf2, strlen(buf2));
3242 free(buf2);
3243 if(node->f.b.type == FILE_REG)
3244 {
3245 addtobuf(buf, '|');
3246 sprintf(numbuf, "%i", node->size);
3247 bufcat(buf, numbuf, strlen(numbuf));
3248 }
3249 addtobuf(buf, 13);
3250 addtobuf(buf, 10);
3251 } else {
3252 ic = 1;
3253 }
3254 if((node->child != NULL) && !ic)
3255 {
3256 lev++;
3257 node = node->child;
3258 } else if(node->next != NULL) {
3259 node = node->next;
3260 } else {
3261 while(node->next == NULL)
3262 {
3263 lev--;
3264 node = node->parent;
3265 if(node == shareroot)
3266 break;
3267 }
3268 if(node == shareroot)
3269 break;
3270 node = node->next;
3271 }
3272 }
3273 if(hmlistname != NULL)
3274 {
3275 unlink(hmlistname);
3276 free(hmlistname);
3277 }
3278 hmlistname = sstrdup("/tmp/dc-filelist-hm-XXXXXX");
3279 if((fd = mkstemp(hmlistname)) < 0)
3280 {
3281 flog(LOG_WARNING, "could not create HM file list tempfile: %s", strerror(errno));
3282 free(hmlistname);
3283 hmlistname = NULL;
3284 } else {
3285 /*
3286 * I do not want to implement a good Huffman encoder, and it's not
3287 * like Huffman encoding actually yields any impressive results
3288 * for DC file lists anyway, so I'll just output a bogus
3289 * tree. Implement a good encoder if you want to.
3290 */
3291 write(fd, "HE3\r\0", 5);
3292 write(fd, &bufdata, 4);
3293 ibuf = 256;
3294 write(fd, &ibuf, 2);
3295 ibuf = 8;
3296 for(i = 0; i < 256; i++)
3297 {
3298 write(fd, &i, 1);
3299 write(fd, &ibuf, 1);
3300 }
3301 for(i = 0; i < 256; i++)
3302 write(fd, &i, 1);
3303 for(buf2 = buf; bufdata > 0;)
3304 {
3305 if((ret = write(fd, buf2, bufdata)) < 0)
3306 {
3307 flog(LOG_WARNING, "could not write file list: %s", strerror(errno));
3308 break;
3309 }
3310 bufdata -= ret;
3311 buf2 += ret;
3312 }
3313 close(fd);
3314 }
3315 free(buf);
3316}
3317
3318static struct xmlent
3319{
3320 wchar_t c;
3321 wchar_t *ent;
3322} entities[] = {
3323 {L'&', L"&amp;"},
3324 {L'\"', L"&#34;"},
3325/* {L'\'', L"&quot;"}, Emulate DC++ escaping by omitting this. */
3326 {L'\0', NULL}
3327};
3328
3329static wchar_t *escapexml(wchar_t *src)
3330{
3331 static wchar_t *buf = NULL;;
3332 int ret, c;
3333 wchar_t nbuf[32];
3334 size_t bufsize, bufdata;
3335 struct xmlent *ent;
3336
3337 if(buf != NULL)
3338 free(buf);
3339 buf = NULL;
3340 bufsize = bufdata = 0;
3341 for(; *src != L'\0'; src++)
3342 {
3343 c = wctob(*src);
3344 if((c > 0) && (c < 32))
3345 {
3346 bufcat(buf, L"&#", 2);
3347 ret = swprintf(nbuf, (sizeof(nbuf) / sizeof(*nbuf)), L"%i", c);
3348 bufcat(buf, nbuf, ret);
3349 addtobuf(buf, L';');
3350 } else {
3351 for(ent = entities; ent->ent != NULL; ent++)
3352 {
3353 if(ent->c == *src)
3354 {
3355 bufcat(buf, ent->ent, wcslen(ent->ent));
3356 break;
3357 }
3358 }
3359 if(ent->ent == NULL)
3360 addtobuf(buf, *src);
3361 }
3362 }
3363 addtobuf(buf, L'\0');
3364 return(buf);
3365}
3366
3367static void updatexmllist(void)
3368{
3369 int i, fd, lev;
3370 FILE *fs;
3371 char cidbuf[14], *namebuf;
3372 char *hashbuf;
3373 struct sharecache *node;
3374
3375 if(xmllistname != NULL)
3376 {
3377 unlink(xmllistname);
3378 free(xmllistname);
3379 }
3380 xmllistname = sstrdup("/tmp/dc-filelist-dcxml-XXXXXX");
3381 if((fd = mkstemp(xmllistname)) < 0)
3382 {
3383 flog(LOG_WARNING, "could not create XML file list tempfile: %s", strerror(errno));
3384 free(xmllistname);
3385 xmllistname = NULL;
3386 return;
3387 }
3388 if((fs = fdopen(fd, "w")) == NULL)
3389 {
3390 flog(LOG_WARNING, "could not fdopen XML list fd %i: %s", fd, strerror(errno));
3391 unlink(xmllistname);
3392 free(xmllistname);
3393 xmllistname = NULL;
3394 close(fd);
3395 return;
3396 }
3397 fprintf(fs, "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?>\r\n");
3398 for(i = 0; i < sizeof(cidbuf) - 1; i++)
3399 cidbuf[i] = (rand() % ('Z' - 'A' + 1)) + 'A';
3400 cidbuf[i] = 0;
1c4b02cd 3401 if(confgetint("dc", "dcppemu"))
3402 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"DC++ 0.674\">\r\n", cidbuf);
3403 else
3404 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"%s\">\r\n", cidbuf, "DoldaConnect" VERSION);
d3372da9 3405
3406 node = shareroot->child;
3407 lev = 0;
3408 while(1)
3409 {
3410 if((namebuf = icswcstombs(escapexml(node->name), "UTF-8", NULL)) != NULL)
3411 {
3412 for(i = 0; i < lev; i++)
3413 fputc('\t', fs);
3414 if(node->child != NULL)
3415 {
3416 fprintf(fs, "<Directory Name=\"%s\">\r\n", namebuf);
3417 node = node->child;
3418 lev++;
3419 continue;
3420 } else {
3421 fprintf(fs, "<File Name=\"%s\" Size=\"%i\"", namebuf, node->size);
3422 if(node->f.b.hastth)
3423 {
3424 hashbuf = base32encode(node->hashtth, 24);
3425 fprintf(fs, " TTH=\"%.39s\"", hashbuf);
3426 free(hashbuf);
3427 }
3428 fprintf(fs, "/>\r\n");
3429 }
3430 while(node->next == NULL)
3431 {
3432 node = node->parent;
3433 if(node == shareroot)
3434 {
3435 break;
3436 } else {
3437 lev--;
3438 for(i = 0; i < lev; i++)
3439 fputc('\t', fs);
3440 fprintf(fs, "</Directory>\r\n");
3441 }
3442 }
3443 if(node == shareroot)
3444 break;
3445 node = node->next;
3446 }
3447 }
3448
1c4b02cd 3449 if(confgetint("dc", "dcppemu"))
3450 fprintf(fs, "</FileListing>");
3451 else
3452 fprintf(fs, "</FileListing>\r\n");
d3372da9 3453 fclose(fs);
3454}
3455
3456static void updatexmlbz2list(void)
3457{
3458 int err, fd;
3459 FILE *in;
3460 FILE *real;
3461 BZFILE *out;
3462 char buf[1024];
3463 size_t bufdata;
3464
3465 if(xmllistname == NULL)
3466 return;
3467 if((in = fopen(xmllistname, "r")) == NULL)
3468 {
3469 flog(LOG_WARNING, "could not open XML file list for bzipping: %s", strerror(errno));
3470 return;
3471 }
3472 if(xmlbz2listname != NULL)
3473 {
3474 unlink(xmlbz2listname);
3475 free(xmlbz2listname);
3476 }
3477 xmlbz2listname = sstrdup("/tmp/dc-filelist-dcxmlbz2-XXXXXX");
3478 if((fd = mkstemp(xmlbz2listname)) < 0)
3479 {
3480 flog(LOG_WARNING, "could not create bzipped XML file list tempfile: %s", strerror(errno));
3481 free(xmlbz2listname);
3482 xmlbz2listname = NULL;
3483 fclose(in);
3484 return;
3485 }
3486 if((real = fdopen(fd, "w")) == NULL)
3487 {
3488 flog(LOG_WARNING, "could not fdopen bzipped XML list fd %i: %s", fd, strerror(errno));
3489 close(fd);
3490 unlink(xmlbz2listname);
3491 free(xmlbz2listname);
3492 xmlbz2listname = NULL;
3493 fclose(in);
3494 return;
3495 }
3496 out = BZ2_bzWriteOpen(&err, real, 9, 0, 0);
3497 if(err != BZ_OK)
3498 {
3499 flog(LOG_WARNING, "could not open bzip2 stream from XML list");
3500 fclose(real);
3501 unlink(xmlbz2listname);
3502 free(xmlbz2listname);
3503 xmlbz2listname = NULL;
3504 fclose(in);
3505 return;
3506 }
3507 while(!feof(in))
3508 {
3509 bufdata = fread(buf, 1, sizeof(buf), in);
3510 BZ2_bzWrite(&err, out, buf, bufdata);
3511 }
3512 fclose(in);
3513 BZ2_bzWriteClose(&err, out, 0, NULL, NULL);
3514 fclose(real);
3515}
3516
6305c428 3517static void listtimercb(int cancelled, void *uudata)
3518{
3519 listwritetimer = NULL;
3520 if(!cancelled)
3521 updatelists(1);
3522}
3523
3524static void updatelists(int now)
d3372da9 3525{
6305c428 3526 if(!now)
3527 {
3528 if(listwritetimer == NULL)
3529 listwritetimer = timercallback(ntime() + 300, listtimercb, NULL);
3530 return;
3531 }
3532 if(listwritetimer != NULL)
3533 canceltimer(listwritetimer);
d3372da9 3534 updatehmlist();
3535 updatexmllist();
3536 updatexmlbz2list();
6305c428 3537}
3538
3539static int shareupdate(unsigned long long uusharesize, void *data)
3540{
3541 updatelists(0);
d3372da9 3542 return(0);
3543}
3544
3545static void dispatchcommand(struct qcommand *qcmd, struct command *cmdlist, struct socket *sk, void *data)
3546{
3547 char *p;
3548 struct command *cmd;
3549
3550 if((p = strchr(qcmd->string, ' ')) != NULL)
3551 *(p++) = 0;
3552 for(cmd = cmdlist; cmd->handler != NULL; cmd++)
3553 {
3554 if(!strcmp(cmd->name, qcmd->string))
3555 break;
3556 }
3557 if(cmd->handler != NULL)
3558 cmd->handler(sk, data, qcmd->string, p);
3559/*
3560 else
3561 flog(LOG_DEBUG, "Unimplemented DC command: %s \"%s\"", qcmd->string, p?p:"noargs");
3562*/
3563}
3564
3565static int run(void)
3566{
3567 struct fnetnode *fn, *nextfn;
3568 struct dchub *hub;
3569 struct dcpeer *peer, *nextpeer;
3570 struct qcommand *qcmd;
3571 int ret;
3572
3573 ret = 0;
3574 for(fn = fnetnodes; fn != NULL; fn = nextfn)
3575 {
3576 nextfn = fn->next;
3577 if(fn->fnet != &dcnet)
3578 continue;
3579 if(fn->data == NULL)
3580 continue;
3581 hub = (struct dchub *)fn->data;
3582 if((qcmd = ulqcmd(&hub->queue)) != NULL)
3583 {
3584 if(*qcmd->string == '$')
3585 {
3586 if((fn->sk != NULL) && (fn->sk->state == SOCK_EST))
3587 dispatchcommand(qcmd, hubcmds, fn->sk, fn);
3588 } else if(*qcmd->string != 0) {
3589 hubrecvchat(fn->sk, fn, NULL, qcmd->string);
3590 }
3591 freeqcmd(qcmd);
3592 ret = 1;
3593 break;
3594 }
3595 }
3596 for(peer = peers; peer != NULL; peer = nextpeer)
3597 {
3598 nextpeer = peer->next;
3599 if((qcmd = ulqcmd(&peer->queue)) != NULL)
3600 {
1e9d82b1 3601 if(peer->timeout != NULL)
3602 canceltimer(peer->timeout);
3603 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 3604 if(*qcmd->string == '$')
3605 dispatchcommand(qcmd, peercmds, peer->sk, peer);
3606 freeqcmd(qcmd);
3607 ret = 1;
3608 break;
3609 }
3610 }
3611 return(ret);
3612}
3613
3614static void preinit(int hup)
3615{
3616 if(hup)
3617 return;
3618 regfnet(&dcnet);
3619}
3620
3621static int updateudpport(struct configvar *var, void *uudata)
3622{
3623 struct sockaddr_in addr;
3624 struct socket *newsock;
3625
3626 memset(&addr, 0, sizeof(addr));
3627 addr.sin_family = AF_INET;
3628 addr.sin_port = htons(var->val.num);
3629 if((newsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3630 {
3631 flog(LOG_WARNING, "could not create new DC UDP socket, reverting to old: %s", strerror(errno));
3632 return(0);
3633 }
3634 newsock->readcb = udpread;
3635 if(udpsock != NULL)
3636 putsock(udpsock);
3637 udpsock = newsock;
3638 return(0);
3639}
3640
3641static int updatetcpport(struct configvar *var, void *uudata)
3642{
3643 struct sockaddr_in addr;
3644 struct socket *newsock;
3645
3646 memset(&addr, 0, sizeof(addr));
3647 addr.sin_family = AF_INET;
3648 addr.sin_port = htons(var->val.num);
3649 if((newsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3650 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3651 if(tcpsock != NULL)
3652 putsock(tcpsock);
3653 tcpsock = newsock;
3654 return(0);
3655}
3656
3657static int init(int hup)
3658{
3659 struct sockaddr_in addr;
3660
3661 if(!hup)
3662 {
3663 GCBREG(sharechangecb, shareupdate, NULL);
3664 if(udpsock != NULL)
3665 putsock(udpsock);
3666 if(tcpsock != NULL)
3667 putsock(tcpsock);
3668 addr.sin_family = AF_INET;
3669 memset(&addr.sin_addr, 0, sizeof(addr.sin_addr));
3670 addr.sin_port = htons(confgetint("dc", "udpport"));
3671 if((udpsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3672 {
3673 flog(LOG_CRIT, "could not create DC UDP socket: %s", strerror(errno));
3674 return(1);
3675 }
3676 udpsock->readcb = udpread;
3677 addr.sin_port = htons(confgetint("dc", "tcpport"));
3678 if((tcpsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3679 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3680 CBREG(confgetvar("dc", "udpport"), conf_update, updateudpport, NULL, NULL);
3681 CBREG(confgetvar("dc", "tcpport"), conf_update, updatetcpport, NULL, NULL);
3682 CBREG(confgetvar("net", "mode"), conf_update, updatetcpport, NULL, NULL);
3683 }
3684 return(0);
3685}
3686
3687static void terminate(void)
3688{
3689 if(hmlistname != NULL)
3690 {
3691 unlink(hmlistname);
3692 free(hmlistname);
3693 }
3694 if(xmllistname != NULL)
3695 {
3696 unlink(xmllistname);
3697 free(xmllistname);
3698 }
3699 if(xmlbz2listname != NULL)
3700 {
3701 unlink(xmlbz2listname);
3702 free(xmlbz2listname);
3703 }
3704}
3705
3706static struct configvar myvars[] =
3707{
3708 {CONF_VAR_STRING, "desc", {.str = L""}},
3709 {CONF_VAR_STRING, "speedstring", {.str = L"LAN(T1)"}},
3710 {CONF_VAR_STRING, "email", {.str = L"spam@spam.org"}},
3711 {CONF_VAR_INT, "udpport", {.num = 0}},
3712 {CONF_VAR_INT, "tcpport", {.num = 0}},
1c4b02cd 3713 {CONF_VAR_BOOL, "dcppemu", {.num = 0}},
d3372da9 3714 {CONF_VAR_END}
3715};
3716
3717static struct module me =
3718{
3719 .conf =
3720 {
3721 .vars = myvars
3722 },
3723 .preinit = preinit,
3724 .init = init,
3725 .run = run,
3726 .terminate = terminate,
3727 .name = "dc"
3728};
3729
3730MODULE(me)
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