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