Dolda2000 GitWeb / doldaconnect.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Fix some potential issues when freeing running cbchains.
[doldaconnect.git] / daemon / fnet-dc.c
CommitLineData
d3372da9 1/*
2 * Dolda Connect - Modular multiuser Direct Connect-style client
3 * Copyright (C) 2004 Fredrik Tolf (fredrik@dolda2000.com)
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18*/
19#include <stdlib.h>
20#include <stdio.h>
21#include <wchar.h>
22#include <malloc.h>
23#include <unistd.h>
24#include <fcntl.h>
25#include <string.h>
26#include <netinet/in.h>
27#include <arpa/inet.h>
28#include <alloca.h>
29#include <wctype.h>
30#include <time.h>
31#include <errno.h>
32#include <bzlib.h>
33#include <zlib.h>
34#include <sys/stat.h>
35
36#ifdef HAVE_CONFIG_H
37#include <config.h>
38#endif
39#include "filenet.h"
40#include "log.h"
41#include "module.h"
42#include "utils.h"
43#include "client.h"
44#include "transfer.h"
45#include "sysevents.h"
46#include "net.h"
8b17e919 47#include <tiger.h>
d3372da9 48
49/*
50 * The Direct Connect protocol is extremely ugly. Thus, this code must
51 * also be a bit ugly in certain places. Please forgive me. =/
52 *
53 * This also means that there might be some pieces of the code that
54 * look completely illogical to you, and you think that you may make
55 * them much neater/better. However, in many cases it might just be
56 * that it's required to cope with some oddity of the protocol, such
57 * as the amazingly ugly delayed key response in the peer protocol.
58 */
59
60/* I assume this is the correct character set to use for DC,
61 * considering it was developed without i18n support under Windows */
62#define DCCHARSET "windows-1252"
63
64#ifdef DCPP_MASQUERADE
65/*
66 * I honestly don't want to pretend being a client that I'm not, but
67 * there are so many hubs that simply do not accept any clients
68 * outside their whitelists, for no obvious reasons, so I feel that I
69 * am left with little choice. Anyhow, as long as I actually support
70 * all the features that my faked DC++ version does, there should be
71 * very little harm done.
72 */
73#define DCIDTAG "++"
74#define DCIDTAGV "0.674"
75#define DCIDFULL "DC++ 0.674"
76#else
77#define DCIDTAG "Dolda"
78#define DCIDTAGV VERSION
79#define DCIDFULL "DoldaConnect " VERSION
80#endif
81
82#define PEER_CMD 0
9a2d6cb8 83#define PEER_STOP 1
84#define PEER_TRNS 2
85#define PEER_SYNC 3
86#define PEER_TTHL 4
d3372da9 87
88#define CPRS_NONE 0
89#define CPRS_ZLIB 1
90
91struct command
92{
93 char *name;
94 void (*handler)(struct socket *sk, void *data, char *cmd, char *args);
9a2d6cb8 95 int stop;
d3372da9 96};
97
98struct qcommand
99{
100 struct qcommand *next;
101 char *string;
102};
103
104struct dchub
105{
106 char *inbuf;
107 size_t inbufdata, inbufsize;
108 struct qcommand *queue;
1c4b02cd 109 int extended, dcppemu;
1d85f24b 110 char *charset;
d3372da9 111 char *nativename;
112 char *nativenick;
113};
114
115struct dcexppeer
116{
117 struct dcexppeer *next, *prev;
118 char *nick;
119 struct fnetnode *fn;
120 struct timer *expire;
121};
122
123struct dcpeer
124{
125 struct dcpeer *next, *prev;
126 struct socket *sk;
127 struct fnetnode *fn;
128 char *inbuf;
129 size_t inbufdata, inbufsize;
9a2d6cb8 130 size_t curread, totalsize;
d3372da9 131 int freeing;
1e9d82b1 132 struct timer *timeout;
d3372da9 133 struct qcommand *queue;
134 struct transfer *transfer;
135 int state;
136 int ptclose; /* Close after transfer is complete */
137 int accepted; /* If false, we connected, otherwise, we accepted */
1c4b02cd 138 int extended, dcppemu;
d3372da9 139 int direction; /* Using the constants from transfer.h */
140 int compress;
df873cd0 141 int hascurpos, fetchingtthl, notthl;
9a2d6cb8 142 struct tigertreehash tth;
1d85f24b 143 char *charset;
d3372da9 144 void *cprsdata;
d3372da9 145 char *key;
146 char *nativename;
147 char **supports;
148 wchar_t *wcsname;
149};
150
151static struct fnet dcnet;
152static struct transferiface dctransfer;
153static struct socket *udpsock = NULL;
154static struct socket *tcpsock = NULL;
155static struct dcpeer *peers = NULL;
156int numdcpeers = 0;
157static struct dcexppeer *expected = NULL;
158static char *hmlistname = NULL;
159static char *xmllistname = NULL;
160static char *xmlbz2listname = NULL;
6305c428 161static struct timer *listwritetimer = NULL;
d3372da9 162
5ec60e42 163static int peerconnect(struct socket *sk, int err, struct fnetnode *fn);
164static int peerread(struct socket *sk, struct dcpeer *peer);
165static int peererror(struct socket *sk, int err, struct dcpeer *peer);
d3372da9 166static void freedcpeer(struct dcpeer *peer);
5ec60e42 167static void transread(struct dcpeer *peer);
168static void transerr(struct dcpeer *peer);
169static int transwrite(struct socket *sk, struct dcpeer *peer);
d3372da9 170static void updatehmlist(void);
171static void updatexmllist(void);
172static void updatexmlbz2list(void);
9a2d6cb8 173static void requestfile(struct dcpeer *peer);
6305c428 174static void updatelists(int now);
d3372da9 175
176static int reservedchar(unsigned char c)
177{
178 return((c == 0) || (c == 5) || (c == 124) || (c == 96) || (c == 126) || (c == 36));
179}
180
181/* Oh, how I despise having to do this... */
182static char *dcmakekey(char *lock)
183{
184 int i, len, offset;
185 char *buf, *key;
186 char save;
187
188 buf = smalloc(strlen(lock));
189 save = 5;
190 len = 0;
191 for(i = 0; lock[i]; i++)
192 {
193 buf[i] = lock[i] ^ save;
194 buf[i] = ((buf[i] & 0x0F) << 4) | ((buf[i] & 0xF0) >> 4);
195 save = lock[i];
196 if((i != 0) && reservedchar(buf[i]))
197 len += 10;
198 else
199 len++;
200 }
201 buf[0] ^= buf[i - 1];
202 if(reservedchar(buf[0]))
203 len += 10;
204 else
205 len++;
206 key = smalloc(len + 1);
207 offset = 0;
208 for(i = 0; lock[i] != 0; i++)
209 {
210 if(reservedchar(buf[i]))
211 offset += sprintf(key + offset, "/%%DCN%03i%%/", buf[i]);
212 else
213 key[offset++] = buf[i];
214 }
215 key[offset] = 0;
216 free(buf);
217 return(key);
218}
219
9a2d6cb8 220static char *pathnmdc2adc(char *path)
221{
222 char *ret;
223 size_t retsize, retdata;
224
225 if(!strcmp(path, "files.xml") || !strcmp(path, "files.xml.bz2") || !strcmp(path, "MyList.DcLst"))
226 return(sstrdup(path));
227 ret = NULL;
228 retsize = retdata = 0;
229 addtobuf(ret, '/');
230 for(; *path; path++)
231 {
232 if(*path == '\\')
233 addtobuf(ret, '/');
234 else
235 addtobuf(ret, *path);
236 }
237 addtobuf(ret, 0);
238 return(ret);
239}
240
241static int isdchash(struct hash *hash)
242{
243 if(wcscmp(hash->algo, L"TTH"))
244 return(0);
245 if(hash->len != 24)
246 return(0);
247 return(1);
248}
249
250static int supports(struct dcpeer *peer, char *cap)
251{
252 char **p;
253
254 if(peer->supports == NULL)
255 return(0);
256 for(p = peer->supports; *p != NULL; p++)
257 {
258 if(!strcasecmp(*p, cap))
259 return(1);
260 }
261 return(0);
262}
263
d3372da9 264static void endcompress(struct dcpeer *peer)
265{
266 if(peer->compress == CPRS_ZLIB)
267 {
268 deflateEnd(peer->cprsdata);
269 free(peer->cprsdata);
270 }
271 peer->compress = CPRS_NONE;
272}
273
274static void initcompress(struct dcpeer *peer, int algo)
275{
276 int ret;
277
278 endcompress(peer);
279 peer->compress = algo;
280 if(algo == CPRS_ZLIB)
281 {
282 peer->cprsdata = smalloc(sizeof(z_stream));
283 memset(peer->cprsdata, 0, sizeof(z_stream));
284 if((ret = deflateInit(peer->cprsdata, 3)) != Z_OK)
285 {
286 flog(LOG_CRIT, "Aiya! zlib refuses to init (%i)!", ret);
287 abort();
288 }
289 }
290}
291
292static void unquote(wchar_t *in)
293{
294 wchar_t *p, *p2, nc;
295
296 for(p = in; *p != L'\0'; p++)
297 {
298 if(*p == L'&')
299 {
300 for(p2 = p + 1; (*p2 != L'\0') && (*p2 != L';') && (*p2 != L'&'); p2++);
301 if(*p2 == L'&')
302 continue;
303 if(*p2 == L'\0')
304 return;
305 *p2 = L'\0';
306 nc = L'\0';
307 if(!wcscmp(p + 1, L"amp"))
308 {
309 nc = L'&';
310 } else if(p[1] == L'#') {
311 nc = ucptowc(wcstol(p + 2, NULL, 10));
312 }
313 if(nc == L'\0')
314 {
315 *p2 = L';';
316 p = p2;
317 continue;
318 }
319 *p = nc;
320 memmove(p + 1, p2 + 1, (wcslen(p2 + 1) + 1) * sizeof(wchar_t));
321 }
322 }
323}
324
325static void freeexppeer(struct dcexppeer *ep)
326{
327 if(ep->next != NULL)
328 ep->next->prev = ep->prev;
329 if(ep->prev != NULL)
330 ep->prev->next = ep->next;
331 if(ep == expected)
332 expected = ep->next;
333 free(ep->nick);
334 putfnetnode(ep->fn);
335 if(ep->expire != NULL)
336 canceltimer(ep->expire);
337 free(ep);
338}
339
340static void exppeerexpire(int cancelled, struct dcexppeer *ep)
341{
342 ep->expire = NULL;
343 if(!cancelled)
344 freeexppeer(ep);
345}
346
347static struct dcexppeer *expectpeer(char *nick, struct fnetnode *fn)
348{
349 struct dcexppeer *ep;
350
351 ep = smalloc(sizeof(*ep));
352 ep->nick = sstrdup(nick);
353 getfnetnode(ep->fn = fn);
354 ep->expire = timercallback(ntime() + 300, (void (*)(int, void *))exppeerexpire, ep);
355 ep->next = expected;
356 ep->prev = NULL;
357 if(expected != NULL)
358 expected->prev = ep;
359 expected = ep;
360 return(ep);
361}
362
363static struct qcommand *newqcmd(struct qcommand **queue, char *string)
364{
365 struct qcommand *new;
366
367 while(*queue != NULL)
368 queue = &(*queue)->next;
369 new = smalloc(sizeof(*new));
370 new->string = sstrdup(string);
371 new->next = *queue;
372 *queue = new;
373 return(new);
374}
375
376static struct qcommand *ulqcmd(struct qcommand **queue)
377{
378 struct qcommand *qcmd;
379
380 if((qcmd = *queue) == NULL)
381 return(NULL);
382 *queue = qcmd->next;
383 return(qcmd);
384}
385
386static void freeqcmd(struct qcommand *qcmd)
387{
388 free(qcmd->string);
389 free(qcmd);
390}
391
392static void hubrecvchat(struct socket *sk, struct fnetnode *fn, char *from, char *string)
393{
394 wchar_t *chat, *wfrom, *wpeer;
395 char *p, *end;
396 struct fnetpeer *peer;
1d85f24b 397 struct dchub *hub;
d3372da9 398
1d85f24b 399 hub = fn->data;
d3372da9 400 end = string + strlen(string);
401 while((p = strchr(string, 13)) != NULL)
402 memmove(p, p + 1, (end-- - p));
403 if(from != NULL)
404 {
405 if((strlen(string) > strlen(from) + 2) && (*string == '<') && !memcmp(string + 1, from, strlen(from)) && (*(string + strlen(from) + 1) == '>'))
406 string += strlen(from) + 2;
1d85f24b 407 if((wfrom = icmbstowcs(from, hub->charset)) == NULL)
d3372da9 408 return;
409 wpeer = swcsdup(wfrom);
410 } else {
411 wfrom = NULL;
412 wpeer = NULL;
413 if(*string == '<')
414 {
415 for(p = string + 1; *p; p++)
416 {
417 if((*p == ' ') || (*p == '>'))
418 break;
419 }
420 if(*p == '>')
421 {
422 *(p++) = 0;
423 if(*p == ' ')
424 p++;
1d85f24b 425 if((wpeer = icmbstowcs(string + 1, hub->charset)) == NULL)
d3372da9 426 return;
427 string = p;
428 }
429 }
430 if(wpeer == NULL)
431 wpeer = swcsdup(L"");
432 }
1d85f24b 433 if((chat = icmbstowcs(string, hub->charset)) == NULL)
d3372da9 434 {
435 if(wfrom != NULL)
436 free(wfrom);
437 free(wpeer);
438 return;
439 }
440 unquote(chat);
441 if(wfrom != NULL)
442 {
443 if((peer = fnetfindpeer(fn, wfrom)) == NULL) /* Assume public chat */
444 fnethandlechat(fn, 1, wfrom, wpeer, chat);
445 else
446 fnethandlechat(fn, 0, wfrom, wpeer, chat);
447 } else {
448 fnethandlechat(fn, 1, L"", wpeer, chat);
449 }
450 if(wfrom != NULL)
451 free(wfrom);
452 free(wpeer);
453 free(chat);
454}
455
1e9d82b1 456static void peertimeout(int cancelled, struct dcpeer *peer)
457{
458 peer->timeout = NULL;
459 if(cancelled)
460 return;
461 freedcpeer(peer);
462}
463
d3372da9 464static void sendadc(struct socket *sk, char *arg)
465{
466 char *buf;
467 size_t bufsize, bufdata;
468
469 buf = NULL;
470 bufsize = bufdata = 0;
471 addtobuf(buf, ' ');
472 for(; *arg; arg++)
473 {
474 if(*arg == ' ')
475 {
476 bufcat(buf, "\\s", 2);
477 } else if(*arg == '\n') {
478 bufcat(buf, "\\n", 2);
479 } else if(*arg == '\\') {
480 bufcat(buf, "\\\\", 2);
481 } else {
482 addtobuf(buf, *arg);
483 }
484 }
485 sockqueue(sk, buf, bufdata);
486 free(buf);
487}
488
489static void sendadcf(struct socket *sk, char *arg, ...)
490{
491 char *buf;
492 va_list args;
493
494 va_start(args, arg);
495 buf = vsprintf2(arg, args);
496 va_end(args);
497 if(buf == NULL)
498 return;
499 sendadc(sk, buf);
500 free(buf);
501}
502
503static char **parseadc(char *args)
504{
505 char **retbuf;
506 size_t retbufsize, retbufdata;
507 char *buf;
508 size_t bufsize, bufdata;
509 int state;
510
511 retbuf = NULL;
512 buf = NULL;
513 retbufsize = retbufdata = bufsize = bufdata = 0;
514 state = 0;
515 while(state != 3)
516 {
517 switch(state)
518 {
519 case 0:
520 if(*args == 0)
521 state = 3;
522 else if(*args != ' ')
523 state = 1;
524 break;
525 case 1:
526 if((*args == ' ') || (*args == 0))
527 {
528 addtobuf(buf, 0);
529 addtobuf(retbuf, buf);
530 buf = NULL;
531 bufsize = bufdata = 0;
532 if(*args == 0)
533 state = 3;
534 } else if(*args == '\\') {
535 state = 2;
536 } else {
537 addtobuf(buf, *args);
538 }
539 args++;
540 break;
541 case 2:
542 if(*args == 0)
543 {
544 if(buf != NULL)
545 free(buf);
546 addtobuf(retbuf, NULL);
547 freeparr(retbuf);
548 return(NULL);
f24d5cfb 549 } else if((*args == 's') || (*args == ' ')) {
d3372da9 550 addtobuf(buf, ' ');
551 } else if(*args == 'n') {
552 addtobuf(buf, '\n');
553 } else if(*args == '\\') {
554 addtobuf(buf, '\\');
555 }
a478552c 556 args++;
d3372da9 557 state = 1;
a478552c 558 break;
d3372da9 559 }
560 }
561 if(buf != NULL)
562 free(buf);
563 addtobuf(retbuf, NULL);
564 return(retbuf);
565}
566
567/* Macros useful in command handlers */
568#define skipspace(s) ({if(((s) = strchr((s), ' ')) == NULL) return; else (s)++;})
569#define qstr(sk, str) sockqueue(sk, str, strlen(str))
570#define qstrf(sk, strandargs...) \
571do { \
572 char *__buf__; \
573 if((__buf__ = sprintf2(strandargs)) != NULL) { \
574 sockqueue(sk, __buf__, strlen(__buf__)); \
575 free(__buf__); \
576 } \
577} while(0)
578
579static char *tr(char *str, char *trans)
580{
581 char *p;
582
583 for(; *trans; trans += 2)
584 {
585 for(p = strchr(str, trans[0]); p != NULL; p = strchr(p, trans[0]))
586 *p = trans[1];
587 }
588 return(str);
589}
590
9a2d6cb8 591static char *getadcid(struct dcpeer *peer)
592{
593 char *buf;
594 char *ret;
d57f938a 595 int isfilelist;
9a2d6cb8 596
2a157d1a 597 isfilelist = 0;
d57f938a 598 if(!wcscmp(peer->transfer->path, L"files.xml") || !wcscmp(peer->transfer->path, L"files.xml.bz2") || !wcscmp(peer->transfer->path, L"MyList.DcLst"))
599 isfilelist = 1;
600 if(!isfilelist && (peer->transfer->hash != NULL) && isdchash(peer->transfer->hash) && supports(peer, "tthf"))
9a2d6cb8 601 {
602 buf = base32encode(peer->transfer->hash->buf, 24);
603 ret = sprintf2("TTH/%.39s", buf);
604 free(buf);
605 } else {
606 if((buf = icwcstombs(peer->transfer->path, "UTF-8")) == NULL)
607 return(NULL);
608 ret = pathnmdc2adc(buf);
609 free(buf);
610 }
611 return(ret);
612}
613
614
d3372da9 615static int trresumecb(struct transfer *transfer, wchar_t *cmd, wchar_t *arg, struct dcpeer *peer)
616{
617 if(!wcscmp(cmd, L"resume"))
618 {
619 if(arg == NULL)
620 {
621 flog(LOG_WARNING, "filter returned no position for \"resume\" on transfer %i", transfer->id);
622 freedcpeer(peer);
623 } else {
624 transfer->curpos = wcstol(arg, NULL, 10);
9a2d6cb8 625 peer->hascurpos = 1;
626 requestfile(peer);
d3372da9 627 }
d3372da9 628 return(1);
629 }
630 return(0);
631}
632
9a2d6cb8 633static void sendmynick(struct dcpeer *peer)
d3372da9 634{
1d85f24b 635 struct fnetnode *fn;
d3372da9 636
1d85f24b 637 fn = peer->fn;
638 if(fn == NULL)
639 qstrf(peer->sk, "$MyNick %s|", icswcstombs(confgetstr("cli", "defnick"), peer->charset, "DoldaConnectUser-IN"));
9a2d6cb8 640 else
1d85f24b 641 qstrf(peer->sk, "$MyNick %s|", icswcstombs(fn->mynick, peer->charset, "DoldaConnectUser-IN"));
9a2d6cb8 642}
643
644static void sendpeerlock(struct dcpeer *peer)
645{
1c4b02cd 646 if(peer->dcppemu)
647 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DCPLUSPLUS0.674ABCABC|");
648 else
649 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DOLDA%sABCABCABC|", VERSION);
9a2d6cb8 650}
651
652static void sendsupports(struct dcpeer *peer)
653{
1c4b02cd 654 if(peer->dcppemu)
655 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG |");
656 else
657 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG|");
9a2d6cb8 658}
659
660static void requestfile(struct dcpeer *peer)
661{
662 char *buf;
663
664 if(peer->transfer->size == -1)
d3372da9 665 {
1d85f24b 666 /* Use DCCHARSET for $Get paths until further researched... */
9a2d6cb8 667 if((buf = icswcstombs(peer->transfer->path, DCCHARSET, NULL)) == NULL)
d3372da9 668 {
9a2d6cb8 669 transferseterror(peer->transfer, TRNSE_NOTFOUND);
670 freedcpeer(peer);
d3372da9 671 return;
672 }
9a2d6cb8 673 /* The transfer will be restarted later from
674 * cmd_filelength when it detects that the sizes
675 * don't match. */
676 qstrf(peer->sk, "$Get %s$1|", buf);
677 return;
d3372da9 678 }
9a2d6cb8 679 if((peer->transfer->hash == NULL) && !peer->notthl)
d3372da9 680 {
9a2d6cb8 681 if(supports(peer, "adcget") && supports(peer, "tthl"))
d3372da9 682 {
9a2d6cb8 683 qstr(peer->sk, "$ADCGET");
684 sendadc(peer->sk, "tthl");
685 if((buf = getadcid(peer)) == NULL)
d3372da9 686 {
9a2d6cb8 687 transferseterror(peer->transfer, TRNSE_NOTFOUND);
d3372da9 688 freedcpeer(peer);
689 return;
690 }
9a2d6cb8 691 sendadc(peer->sk, buf);
692 free(buf);
693 sendadc(peer->sk, "0");
694 sendadc(peer->sk, "-1");
695 qstr(peer->sk, "|");
df873cd0 696 peer->fetchingtthl = 1;
9a2d6cb8 697 return;
698 }
699 }
700 if(!peer->hascurpos)
701 {
702 if(forkfilter(peer->transfer))
703 {
704 flog(LOG_WARNING, "could not fork filter for transfer %i: %s", peer->transfer->id, strerror(errno));
705 freedcpeer(peer);
706 return;
d3372da9 707 }
9a2d6cb8 708 CBREG(peer->transfer, trans_filterout, (int (*)(struct transfer *, wchar_t *, wchar_t *, void *))trresumecb, NULL, peer);
709 return;
710 }
711 if(supports(peer, "adcget"))
712 {
713 qstr(peer->sk, "$ADCGET");
714 sendadc(peer->sk, "file");
715 if((buf = getadcid(peer)) == NULL)
716 {
717 transferseterror(peer->transfer, TRNSE_NOTFOUND);
718 freedcpeer(peer);
719 return;
720 }
721 sendadc(peer->sk, buf);
722 free(buf);
723 sendadcf(peer->sk, "%i", peer->transfer->curpos);
724 sendadcf(peer->sk, "%i", peer->transfer->size - peer->transfer->curpos);
725 qstr(peer->sk, "|");
726 } else if(supports(peer, "xmlbzlist")) {
727 if((buf = icswcstombs(peer->transfer->path, "UTF-8", NULL)) == NULL)
728 {
729 transferseterror(peer->transfer, TRNSE_NOTFOUND);
730 freedcpeer(peer);
731 return;
732 }
733 qstrf(peer->sk, "$UGetBlock %i %i %s|", peer->transfer->curpos, peer->transfer->size - peer->transfer->curpos, buf);
d3372da9 734 } else {
1d85f24b 735 /* Use DCCHARSET for $Get paths until further researched... */
9a2d6cb8 736 if((buf = icswcstombs(peer->transfer->path, DCCHARSET, NULL)) == NULL)
d3372da9 737 {
9a2d6cb8 738 transferseterror(peer->transfer, TRNSE_NOTFOUND);
739 freedcpeer(peer);
740 return;
d3372da9 741 }
9a2d6cb8 742 qstrf(peer->sk, "$Get %s$%i|", buf, peer->transfer->curpos + 1);
d3372da9 743 }
744}
745
746static void sendmyinfo(struct socket *sk, struct fnetnode *fn)
747{
748 struct dchub *hub;
749 char *buf;
750 struct fnetnode *cfn;
69757b8c 751 int hn1, hn2, hn3;
d3372da9 752
753 hub = fn->data;
754 qstrf(sk, "$MyINFO $ALL %s ", hub->nativenick);
1d85f24b 755 buf = tr(icswcstombs(confgetstr("dc", "desc"), hub->charset, "Charset_conv_failure"), "$_|_");
d3372da9 756 qstrf(sk, "%s", buf);
69757b8c 757 hn1 = hn2 = hn3 = 0;
d3372da9 758 for(cfn = fnetnodes; cfn != NULL; cfn = cfn->next)
759 {
760 if((cfn->state == FNN_EST) || (cfn->state == FNN_HS))
69757b8c 761 {
762 if(cfn->regstatus == FNNS_OP)
763 hn3++;
764 else if(cfn->regstatus == FNNS_REG)
765 hn2++;
766 else
767 hn1++;
768 }
d3372da9 769 }
69757b8c 770 qstrf(sk, "<%s V:%s,M:%c,H:%i/%i/%i,S:%i>",
1c4b02cd 771 (hub->dcppemu)?"++":"Dolda",
772 (hub->dcppemu)?"0.674":VERSION,
d3372da9 773 (tcpsock == NULL)?'P':'A',
69757b8c 774 hn1, hn2, hn3,
d3372da9 775 confgetint("transfer", "slots")
776 );
777 qstrf(sk, "$ $");
1d85f24b 778 buf = tr(icswcstombs(confgetstr("dc", "speedstring"), hub->charset, "Charset_conv_failure"), "$_|_");
d3372da9 779 qstrf(sk, "%s\x01$", buf);
1d85f24b 780 buf = tr(icswcstombs(confgetstr("dc", "email"), hub->charset, "Charset_conv_failure"), "$_|_");
d3372da9 781 qstrf(sk, "%s$", buf);
782 qstrf(sk, "%llu$|", sharesize);
783}
784
785static void hubhandleaction(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
786{
787 struct dchub *hub;
788
789 hub = fn->data;
790 if(!strcmp(cmd, "$Lock"))
791 {
792 qstrf(sk, "$ValidateNick %s|", hub->nativenick);
793 } else if(!strcmp(cmd, "$Hello")) {
794 if(fn->state == FNN_HS)
795 {
796 qstrf(sk, "$Version 1,0091|");
797 qstrf(sk, "$GetNickList|");
798 sendmyinfo(sk, fn);
799 fnetsetstate(fn, FNN_EST);
800 } else {
801 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
802 }
803 }
804}
805
806static void cmd_lock(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
807{
808 struct dchub *hub;
809 char *key;
810 char *p;
811
812 hub = fn->data;
813 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
814 hub->extended = 1;
815 if((p = strchr(args, ' ')) != NULL)
816 *(p++) = 0;
817 if(hub->extended)
818 {
1c4b02cd 819 if(hub->dcppemu)
820 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock |");
821 else
822 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock|");
d3372da9 823 }
824 key = dcmakekey(args);
825 qstrf(sk, "$Key %s|", key);
826 free(key);
827 hubhandleaction(sk, fn, cmd, args);
828}
829
830static void cmd_hubname(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
831{
832 wchar_t *buf;
833 struct dchub *hub;
834
835 hub = fn->data;
836 if(hub->nativename == NULL)
837 free(hub->nativename);
838 hub->nativename = sstrdup(args);
1d85f24b 839 buf = icmbstowcs(args, hub->charset);
d3372da9 840 fnetsetname(fn, (buf == NULL)?L"Hubname conv error":buf);
841 if(buf != NULL)
842 free(buf);
843 hubhandleaction(sk, fn, cmd, args);
844}
845
846static void cmd_hello(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
847{
848 wchar_t *nick;
849 struct dchub *hub;
850
851 hub = fn->data;
1d85f24b 852 if((nick = icmbstowcs(args, hub->charset)) == NULL)
d3372da9 853 return;
854 if(strcmp(args, hub->nativenick) && (fnetfindpeer(fn, nick) == NULL))
855 fnetaddpeer(fn, nick, nick);
856 free(nick);
857 hubhandleaction(sk, fn, cmd, args);
858}
859
860static void cmd_quit(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
861{
862 wchar_t *nick;
863 struct fnetpeer *peer;
864 struct dchub *hub;
865
866 hub = fn->data;
1d85f24b 867 if((nick = icmbstowcs(args, hub->charset)) == NULL)
d3372da9 868 return;
869 if((peer = fnetfindpeer(fn, nick)) != NULL)
870 fnetdelpeer(peer);
871 free(nick);
872 hubhandleaction(sk, fn, cmd, args);
873}
874
875static void cmd_nicklist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
876{
877 struct dchub *hub;
878 char *p;
879 wchar_t *buf;
880 struct fnetpeer *peer, *npeer;
881
882 hub = fn->data;
883 for(peer = fn->peers; peer != NULL; peer = peer->next)
884 peer->flags.b.delete = 1;
885 while((p = strstr(args, "$$")) != NULL)
886 {
887 *p = 0;
1d85f24b 888 if((buf = icmbstowcs(args, hub->charset)) != NULL)
d3372da9 889 {
890 if((peer = fnetfindpeer(fn, buf)) == NULL)
891 peer = fnetaddpeer(fn, buf, buf);
892 else
893 peer->flags.b.delete = 0;
894 free(buf);
895 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
896 }
897 args = p + 2;
898 }
899 for(peer = fn->peers; peer != NULL; peer = npeer)
900 {
901 npeer = peer->next;
902 if(peer->flags.b.delete)
903 fnetdelpeer(peer);
904 }
905 hubhandleaction(sk, fn, cmd, args);
906}
907
908static void cmd_oplist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
909{
910 struct dchub *hub;
911 char *p;
912 wchar_t *buf;
913 struct fnetpeer *peer;
914
915 hub = fn->data;
916 for(peer = fn->peers; peer != NULL; peer = peer->next)
917 peer->flags.b.op = 0;
918 while((p = strstr(args, "$$")) != NULL)
919 {
920 *p = 0;
1d85f24b 921 if((buf = icmbstowcs(args, hub->charset)) != NULL)
d3372da9 922 {
923 if((peer = fnetfindpeer(fn, buf)) != NULL)
924 peer->flags.b.op = 1;
925 free(buf);
926 }
927 args = p + 2;
928 }
929 hubhandleaction(sk, fn, cmd, args);
930}
931
932static void cmd_myinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
933{
934 char *p, *p2;
935 wchar_t *buf, *wp, *wp2;
936 wchar_t abuf[10];
937 struct fnetpeer *peer;
938 struct dchub *hub;
939
940 hub = fn->data;
941 p = args;
942 if(strncmp(p, "$ALL ", 5))
943 return;
944 p += 5;
945 if((p2 = strchr(p, ' ')) == NULL)
946 return;
947 *p2 = 0;
1d85f24b 948 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 949 return;
950 if((peer = fnetfindpeer(fn, buf)) == NULL)
951 peer = fnetaddpeer(fn, buf, buf);
952 free(buf);
953 p = p2 + 1;
954 if((p2 = strstr(p, "$ $")) == NULL)
955 return;
956 *p2 = 0;
1d85f24b 957 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 958 return;
316e9a13 959 if((wcslen(buf) > 0) && (buf[wcslen(buf) - 1] == L'>') && ((wp = wcsrchr(buf, L'<')) != NULL))
d3372da9 960 {
961 buf[wcslen(buf) - 1] = L'\0';
962 *(wp++) = L'\0';
963 if((wp2 = wcschr(wp, L' ')) != NULL)
964 {
965 *(wp2++) = L'\0';
966 fnetpeersetstr(peer, L"dc-client", wp);
967 wp = wp2;
968 do
969 {
970 if((wp2 = wcschr(wp, L',')) != NULL)
971 *(wp2++) = L'\0';
972 if(wp[1] != L':')
973 continue;
974 swprintf(abuf, 10, L"dc-tag-%lc", wp[0]);
975 fnetpeersetstr(peer, abuf, wp + 2);
976 wp = wp2;
977 } while(wp2 != NULL);
978 }
979 }
980 fnetpeersetstr(peer, L"descr", buf);
981 free(buf);
982 p = p2 + 3;
983 if((p2 = strchr(p, '$')) == NULL)
984 return;
985 *(p2 - 1) = 0;
1d85f24b 986 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 987 return;
988 fnetpeersetstr(peer, L"dc-speed", buf);
989 free(buf);
990 p = p2 + 1;
991 if((p2 = strchr(p, '$')) == NULL)
992 return;
993 *p2 = 0;
1d85f24b 994 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 995 return;
996 fnetpeersetstr(peer, L"email", buf);
997 free(buf);
998 p = p2 + 1;
999 if(strlen(p) < 1)
1000 return;
1001 fnetpeersetlnum(peer, L"share", strtoll(p, NULL, 10));
1002 hubhandleaction(sk, fn, cmd, args);
1003}
1004
1005/* I do not implement the fully in that I do not disconnect from the
1006 * old hub. I do this since I believe that if the hub owner really
1007 * wants to get rid of us, then it is his responsibility to disconnect
1008 * us. */
1009static void cmd_forcemove(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1010{
1011 struct dchub *hub;
1012 struct fnetnode *newfn;
1013 int freeargs;
1014
1015 hub = fn->data;
1016 if(strchr(args, ':') == NULL)
1017 {
1018 args = strcpy(smalloc(strlen(args) + 5), args);
1019 strcat(args, ":411");
1020 freeargs = 1;
1021 } else {
1022 freeargs = 0;
1023 }
a3a4a3a7 1024 if((newfn = fnetinitconnect(L"dc", fn->owner, args, NULL)) != NULL)
d3372da9 1025 {
1026 linkfnetnode(newfn);
1027 putfnetnode(newfn);
1028 }
1029 hubhandleaction(sk, fn, cmd, args);
1030 if(freeargs)
1031 free(args);
1032}
1033
1d85f24b 1034static char *getdcpath(struct sharecache *node, size_t *retlen, char *charset)
d3372da9 1035{
1036 char *buf, *buf2;
1037 size_t len, len2;
1038
1039 if(node->parent == NULL)
1040 return(NULL);
1041 if(node->parent == shareroot)
1042 {
1d85f24b 1043 if((buf = icwcstombs(node->name, charset)) == NULL)
d3372da9 1044 return(NULL);
1045 if(retlen != NULL)
1046 *retlen = strlen(buf);
1047 return(buf);
1048 } else {
1d85f24b 1049 if((buf2 = icwcstombs(node->name, charset)) == NULL)
d3372da9 1050 return(NULL);
1d85f24b 1051 if((buf = getdcpath(node->parent, &len, charset)) == NULL)
d3372da9 1052 {
1053 free(buf2);
1054 return(NULL);
1055 }
1056 len2 = strlen(buf2);
1057 buf = srealloc(buf, len + 1 + len2 + 1);
1058 buf[len++] = '\\';
1059 strcpy(buf + len, buf2);
1060 buf[len + len2] = 0;
1061 free(buf2);
1062 if(retlen != NULL)
1063 *retlen = len + len2;
1064 return(buf);
1065 }
1066}
1067
1068/*
1069 * This is the main share searching function for Direct Connect
1070 * peers. Feel free to optimize it if you feel the need for it. I
1071 * haven't ever seen it take any noticable CPU time anyway, so I
1072 * haven't felt that need.
1073 *
1074 * It may feel dubious to just return the directory when all terms are
1075 * satisfied rather than all the files in it, but it really benefits
1076 * everyone: Less cycles used for us, less UDP squelching for active
1077 * searchers, and less bandwidth waste for hubs when serving passive
1078 * searchers.
1079 */
1080static void cmd_search(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1081{
1082 int i, done;
1083 struct dchub *hub;
1084 char *p, *p2;
1085 char *prefix, *infix, *postfix, *buf, *buf2;
1086 struct socket *dsk;
1087 struct sockaddr_in addr;
1088 struct sharecache *node;
1089 int minsize, maxsize;
c7185019 1090 int dotth;
1091 size_t buflen;
d3372da9 1092 int termnum, satisfied, skipcheck;
1093 int level, tersat[32];
1094 wchar_t *terms[32];
1095 char hashtth[24];
1096
1097 hub = fn->data;
1098 if((p = strchr(args, ' ')) == NULL)
1099 return;
1100 *(p++) = 0;
1101
1102 memset(terms, 0, sizeof(terms));
1103 prefix = infix = postfix = NULL;
1104 dsk = NULL;
1105 dotth = 0;
1106
1107 if(!strncmp(args, "Hub:", 4))
1108 {
1109 if(!strcmp(cmd, "$MultiSearch"))
1110 goto out;
1111 if(!strcmp(args + 4, hub->nativenick))
1112 goto out;
1113 prefix = sprintf2("$SR %s ", hub->nativenick);
1114 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1115 postfix = sprintf2(" (%s)\005%s|", formataddress(fn->sk->remote, fn->sk->remotelen), args + 4);
1116 dsk = sk;
1117 getsock(dsk);
1118 } else {
1119 if((p2 = strchr(args, ':')) == NULL)
1120 goto out;
1121 *(p2++) = 0;
1122 addr.sin_family = AF_INET;
1123 if(!inet_aton(args, &addr.sin_addr))
1124 goto out;
1125 addr.sin_port = htons(atoi(p2));
1126 prefix = sprintf2("$SR %s ", hub->nativenick);
1127 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1128 postfix = sprintf2(" (%s)|", formataddress(fn->sk->remote, fn->sk->remotelen));
1129 netdgramconn(dsk = netdupsock(udpsock), (struct sockaddr *)&addr, sizeof(addr));
1130 }
1131
1132 minsize = maxsize = -1;
1133 if(*p == 0)
1134 goto out;
1135 if(*(p++) == 'T')
1136 minsize = 0;
1137 if(*(p++) != '?')
1138 goto out;
1139 if(*p == 0)
1140 goto out;
9d8cf743 1141 if((*(p++) == 'T') && (minsize == 0))
d3372da9 1142 {
1143 maxsize = 0;
1144 minsize = -1;
1145 }
1146 if(*(p++) != '?')
1147 goto out;
1148 if((p2 = strchr(p, '?')) == NULL)
1149 goto out;
1150 *(p2++) = 0;
1151 if(minsize == 0)
1152 minsize = atoi(p);
1153 if(maxsize == 0)
1154 maxsize = atoi(p);
1155 p = p2 + 1;
1156 if(*(p++) != '?')
1157 goto out;
1158 termnum = 0;
1159 p2 = p;
1160 done = 0;
1161 while(!done)
1162 {
1163 if((*p2 == 0) || (*p2 == '$'))
1164 {
1165 if(*p2 == 0)
1166 done = 1;
1167 else
1168 *p2 = 0;
1169 if(*p)
1170 {
1171 if(!dotth && !strncmp(p, "TTH:", 4))
1172 {
1173 dotth = 1;
2dd01e6e 1174 if(((buf = base32decode(p + 4, &buflen)) == NULL) || (buflen != 24))
1175 {
1176 free(buf);
d3372da9 1177 goto out;
2dd01e6e 1178 }
d3372da9 1179 memcpy(hashtth, buf, 24);
1180 free(buf);
1181 } else {
1d85f24b 1182 if((terms[termnum] = icmbstowcs(p, hub->charset)) != NULL)
d3372da9 1183 termnum++;
1184 }
1185 }
1186 p = p2 + 1;
1187 if(termnum == 32)
1188 break;
1189 }
1190 p2++;
1191 }
1192
1193 node = shareroot->child;
1194 level = 0;
1195 for(i = 0; i < termnum; i++)
1196 tersat[i] = -1;
1197 satisfied = 0;
1198 while(1)
1199 {
1200 skipcheck = 0;
1201 if(node->f.b.type == FILE_REG)
1202 {
1203 if((minsize >= 0) && (node->size < minsize))
1204 skipcheck = 1;
1205 if((maxsize >= 0) && (node->size > maxsize))
1206 skipcheck = 1;
1207 }
1208 if(!skipcheck && dotth)
1209 {
1210 if((node->f.b.type != FILE_REG) || (node->f.b.hastth && memcmp(hashtth, node->hashtth, 24)))
1211 skipcheck = 1;
1212 }
1213 if(!skipcheck)
1214 {
1215 for(i = 0; i < termnum; i++)
1216 {
1217 if(tersat[i] >= 0)
1218 continue;
1219 if(wcsexists(node->name, terms[i]))
1220 {
1221 tersat[i] = level;
1222 satisfied++;
1223 } else if(node->child == NULL) {
1224 break;
1225 }
1226 }
1227 }
1228 if(!skipcheck && (satisfied == termnum))
1229 {
1d85f24b 1230 /* Use DCCHARSET in $Get paths until further researched... */
1231 if((buf = getdcpath(node, NULL, DCCHARSET)) != NULL)
d3372da9 1232 {
1233 if(node->f.b.hastth)
1234 {
1235 buf2 = base32encode(node->hashtth, 24);
1236 qstrf(dsk, "%s%s\005%i%sTTH:%.39s%s", prefix, buf, node->size, infix, buf2, postfix);
1237 free(buf2);
1238 } else {
1239 qstrf(dsk, "%s%s\005%i%s%s%s", prefix, buf, node->size, infix, hub->nativename, postfix);
1240 }
1241 free(buf);
1242 }
1243 }
1244 if((!skipcheck && (satisfied == termnum)) || (node->child == NULL))
1245 {
1246 while(node->next == NULL)
1247 {
1248 if((node = node->parent) == shareroot)
1249 break;
1250 level--;
1251 }
1252 if(node == shareroot)
1253 break;
1254 for(i = 0; i < termnum; i++)
1255 {
1256 if(tersat[i] >= level)
1257 {
1258 tersat[i] = -1;
1259 satisfied--;
1260 }
1261 }
1262 node = node->next;
1263 } else {
1264 node = node->child;
1265 level++;
1266 }
1267 }
1268
1269 hubhandleaction(sk, fn, cmd, args);
1270
1271 out:
1272 if(dsk != NULL)
1273 putsock(dsk);
1274 if(prefix != NULL)
1275 free(prefix);
1276 if(infix != NULL)
1277 free(infix);
1278 if(postfix != NULL)
1279 free(postfix);
1280 for(i = 0; (i < 32) && (terms[i] != NULL); i++)
1281 free(terms[i]);
1282}
1283
1284static void cmd_connecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1285{
1286 char *p;
1287 struct dchub *hub;
1288 struct socket *newsk;
1289 struct sockaddr_in addr;
1290
1291 hub = fn->data;
1292 if((p = strchr(args, ' ')) == NULL)
1293 return;
1294 *(p++) = 0;
1295 if(strcmp(args, hub->nativenick))
1296 return;
1297 addr.sin_family = AF_INET;
1298 args = p;
1299 if((p = strchr(args, ':')) == NULL)
1300 return;
1301 *(p++) = 0;
1302 addr.sin_port = htons(atoi(p));
1303 if(!inet_aton(args, &addr.sin_addr))
1304 return;
5ec60e42 1305 newsk = netcsconn((struct sockaddr *)&addr, sizeof(addr), (int (*)(struct socket *, int, void *))peerconnect, fn);
d3372da9 1306 getfnetnode(fn);
1307 hubhandleaction(sk, fn, cmd, args);
1308}
1309
1310static void sendctm(struct socket *sk, char *nick)
1311{
1312 struct sockaddr *addr;
1313 socklen_t addrlen;
1314
1315 if(tcpsock == NULL)
1316 return;
9b5acc18 1317 if(sockgetremotename2(tcpsock, sk, &addr, &addrlen) < 0)
d3372da9 1318 return;
1319 if(addr->sa_family == AF_INET)
1320 qstrf(sk, "$ConnectToMe %s %s|", nick, formataddress(addr, addrlen));
1321 else
1322 flog(LOG_WARNING, "Direct Connect TCP socket is suddenly not AF_INET, but %i", addr->sa_family);
1323 free(addr);
1324}
1325
1326static void cmd_revconnecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1327{
1328 struct dchub *hub;
1329 char *p;
1330
1331 hub = fn->data;
1332 if((p = strchr(args, ' ')) == NULL)
1333 return;
1334 *(p++) = 0;
1335 if(strcmp(p, hub->nativenick))
1336 return;
1337 sendctm(sk, args);
1338 expectpeer(args, fn);
1339 hubhandleaction(sk, fn, cmd, args);
1340}
1341
1342static void cmd_getnetinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1343{
1344 struct dchub *hub;
1345 struct fnetnode *node;
1346 int numhubs;
1347
1348 hub = fn->data;
1349 numhubs = 0;
1350 for(node = fnetnodes; node != NULL; node = node->next)
1351 {
1352 if(node->state == FNN_EST)
1353 numhubs++;
1354 }
1355 qstrf(sk, "$NetInfo %i$%i$%c$0|", confgetint("transfer", "slots"), numhubs, (tcpsock == NULL)?'P':'A');
1356 hubhandleaction(sk, fn, cmd, args);
1357}
1358
1359static void cmd_to(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1360{
1361 struct dchub *hub;
1362 char *p, *p2;
1363
1364 hub = fn->data;
1365 p = args;
1366 if((p2 = strchr(p, ' ')) == NULL)
1367 return;
1368 *(p2++) = 0;
1369 p = p2;
1370 if((p2 = strchr(p, ' ')) == NULL)
1371 return;
1372 *(p2++) = 0;
1373 if(strcmp(p, "From:"))
1374 return;
1375 p = p2;
1376 if((p2 = strstr(p, " $")) == NULL)
1377 return;
1378 *p2 = 0;
1379 p2 += 2;
1380 hubrecvchat(fn->sk, fn, p, p2);
1381 hubhandleaction(sk, fn, cmd, args);
1382}
1383
1384static void cmd_sr(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1385{
1386 struct dchub *hub;
d86b7a9f 1387 char *p, *p2, *buf;
d3372da9 1388 char *nick, *filename, *hubname;
1389 int size, slots;
d86b7a9f 1390 size_t buflen;
d3372da9 1391 struct srchres *sr;
1392 wchar_t *wnick, *wfile;
1393
1394 hub = fn->data;
1395 nick = p = args;
1396 if((p2 = strchr(p, ' ')) == NULL)
1397 return;
1398 *p2 = 0;
1399 p = p2 + 1;
1400 filename = p;
1401 if((p2 = strchr(p, 5)) == NULL)
1402 return;
1403 *p2 = 0;
1404 p = p2 + 1;
1405 if((p2 = strchr(p, ' ')) == NULL)
1406 return;
1407 *p2 = 0;
1408 size = atoi(p);
1409 p = p2 + 1;
1410 if((p2 = strchr(p, '/')) == NULL)
1411 return;
1412 *p2 = 0;
1413 slots = atoi(p);
1414 p = p2 + 1;
1415 if((p2 = strchr(p, 5)) == NULL)
1416 return;
1417 p = p2 + 1;
1418 hubname = p;
1419 if((p2 = strstr(p, " (")) == NULL)
1420 return;
1421 *p2 = 0;
1d85f24b 1422 if((wnick = icmbstowcs(nick, hub->charset)) == NULL)
d3372da9 1423 return;
1d85f24b 1424 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 1425 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
1426 {
1427 free(wnick);
1428 return;
1429 }
1430 sr = newsrchres(&dcnet, wfile, wnick);
1431 if(sr->peernick != NULL)
1432 free(sr->peernick);
1433 sr->peernick = swcsdup(wnick);
1434 sr->size = size;
1435 sr->slots = slots;
1436 free(wfile);
1437 free(wnick);
d86b7a9f 1438 if(!strncmp(hubname, "TTH:", 4))
1439 {
1440 if((buf = base32decode(hubname + 4, &buflen)) != NULL)
1441 {
1442 if(buflen == 24)
1443 sr->hash = newhash(L"TTH", 24, buf);
1444 free(buf);
1445 }
1446 }
d3372da9 1447 getfnetnode(sr->fn = fn);
1448 submitsrchres(sr);
1449 freesrchres(sr);
1450 hubhandleaction(sk, fn, cmd, args);
1451}
1452
1453static void cmd_usercommand(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1454{
1455 /* Do nothing for now. */
1456}
1457
48509089 1458static void cmd_getpass(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1459{
1460 struct dchub *hub;
1c4b02cd 1461 wchar_t *pw;
48509089 1462 char *mbspw;
1463
1464 hub = fn->data;
1c4b02cd 1465 pw = wpfind(fn->args, L"password");
1d85f24b 1466 if((pw == NULL) || ((mbspw = icwcstombs(pw, hub->charset)) == NULL))
48509089 1467 {
1468 killfnetnode(fn);
1469 return;
1470 }
1471 qstrf(sk, "$MyPass %s|", mbspw);
1472 free(mbspw);
fcd0627b 1473 fn->regstatus = FNNS_REG;
48509089 1474 hubhandleaction(sk, fn, cmd, args);
1475}
1476
c9b3ad74 1477static void cmd_logedin(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1478{
1479 struct dchub *hub;
1480
1481 hub = fn->data;
fcd0627b 1482 fn->regstatus = FNNS_OP;
c9b3ad74 1483 hubhandleaction(sk, fn, cmd, args);
1484}
1485
d3372da9 1486static void cmd_mynick(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1487{
9a2d6cb8 1488 struct dcexppeer *expect;
1c4b02cd 1489 struct dchub *hub;
9a2d6cb8 1490
d3372da9 1491 if(peer->nativename != NULL)
1492 free(peer->nativename);
1493 peer->nativename = sstrdup(args);
1494 if(peer->wcsname != NULL)
1495 free(peer->wcsname);
1d85f24b 1496 if((peer->wcsname = icmbstowcs(peer->nativename, peer->charset)) == NULL)
d3372da9 1497 {
1498 freedcpeer(peer);
1499 return;
1500 }
9a2d6cb8 1501 if(peer->accepted)
1502 {
1503 for(expect = expected; expect != NULL; expect = expect->next)
1504 {
1505 if(!strcmp(expect->nick, args))
1506 break;
1507 }
1508 if(expect == NULL)
1509 {
1510 peer->fn = NULL;
1511 } else {
1c4b02cd 1512 hub = expect->fn->data;
9a2d6cb8 1513 peer->fn = expect->fn;
1514 getfnetnode(peer->fn);
1c4b02cd 1515 peer->dcppemu = hub->dcppemu;
9a2d6cb8 1516 freeexppeer(expect);
1517 }
1518 }
d3372da9 1519}
1520
1521static void cmd_direction(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1522{
1523 char *p;
9a2d6cb8 1524 int mydir;
1525 struct transfer *transfer;
d3372da9 1526
1527 if((p = strchr(args, ' ')) == NULL)
1528 return;
1529 *p = 0;
1530 if(!strcmp(args, "Upload"))
9a2d6cb8 1531 mydir = TRNSD_DOWN;
d3372da9 1532 if(!strcmp(args, "Download"))
9a2d6cb8 1533 mydir = TRNSD_UP;
1534 if(peer->accepted)
1535 {
1536 if((peer->transfer == NULL) || (mydir != peer->direction))
1537 {
1538 freedcpeer(peer);
1539 return;
1540 }
1b14d3d8 1541 if(peer->direction == TRNSD_DOWN)
1542 requestfile(peer);
9a2d6cb8 1543 } else {
1544 if(peer->wcsname == NULL)
1545 {
1546 freedcpeer(peer);
1547 return;
1548 }
1549 peer->direction = mydir;
1550 if(peer->direction == TRNSD_UP)
1551 {
01663fd9 1552 if(confgetint("transfer", "ulquota") && hasupload(&dcnet, peer->wcsname))
1553 {
1554 freedcpeer(peer);
1555 return;
1556 }
9a2d6cb8 1557 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1558 } else {
1559 if((transfer = finddownload(peer->wcsname)) == NULL)
1560 {
1561 freedcpeer(peer);
1562 return;
1563 }
1564 transferattach(transfer, &dctransfer, peer);
1565 transfersetstate(transfer, TRNS_HS);
1566 }
1567 transfersetnick(transfer, peer->wcsname);
1568 peer->transfer = transfer;
1569 if(peer->extended)
1570 sendsupports(peer);
1571 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1572 if(peer->key != NULL)
1573 qstrf(sk, "$Key %s|", peer->key);
1574 if(peer->direction == TRNSD_DOWN)
1575 requestfile(peer);
1576 }
d3372da9 1577}
1578
1579static void cmd_peerlock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1580{
9a2d6cb8 1581 char *p, *key;
1582 struct transfer *transfer;
d3372da9 1583
1584 if((p = strchr(args, ' ')) == NULL)
1585 return;
1586 *p = 0;
1587 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
1588 peer->extended = 1;
9a2d6cb8 1589 key = dcmakekey(args);
1590 if(peer->accepted)
1591 {
1592 if(peer->wcsname == NULL)
1593 {
1594 freedcpeer(peer);
1595 return;
1596 }
1597 sendmynick(peer);
1598 sendpeerlock(peer);
1599 if(peer->extended)
1600 sendsupports(peer);
1601 if((transfer = finddownload(peer->wcsname)) == NULL)
1602 {
01663fd9 1603 if(confgetint("transfer", "ulquota") && hasupload(&dcnet, peer->wcsname))
1604 {
1605 freedcpeer(peer);
1606 return;
1607 }
9a2d6cb8 1608 peer->direction = TRNSD_UP;
1609 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1610 } else {
1611 peer->direction = TRNSD_DOWN;
1612 transferattach(transfer, &dctransfer, peer);
1613 transfersetstate(transfer, TRNS_HS);
1614 }
1615 transfersetnick(transfer, peer->wcsname);
1616 peer->transfer = transfer;
1617 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1618 qstrf(sk, "$Key %s|", key);
62da2712 1619 free(key);
9a2d6cb8 1620 } else {
1621 if(peer->key != NULL)
1622 free(peer->key);
1623 peer->key = key;
1624 }
d3372da9 1625}
1626
1627static void cmd_key(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1628{
9a2d6cb8 1629 /* NOP */
1630}
1631
1632static void startdl(struct dcpeer *peer)
1633{
1e9d82b1 1634 if(peer->timeout != NULL)
1635 canceltimer(peer->timeout);
9a2d6cb8 1636 peer->state = PEER_TRNS;
1637 transferstartdl(peer->transfer, peer->sk);
9a2d6cb8 1638}
1639
1640static void startul(struct dcpeer *peer)
1641{
1e9d82b1 1642 if(peer->timeout != NULL)
1643 canceltimer(peer->timeout);
9a2d6cb8 1644 peer->state = PEER_TRNS;
1645 transferstartul(peer->transfer, peer->sk);
5ec60e42 1646 CBREG(peer->sk, socket_write, (int (*)(struct socket *, void *))transwrite, NULL, peer);
d3372da9 1647}
1648
1649static void cmd_filelength(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1650{
1651 int size;
1fc81821 1652 struct transfer *transfer;
d3372da9 1653
1654 if(peer->transfer == NULL)
1655 {
1656 freedcpeer(peer);
1657 return;
1658 }
1659 size = atoi(args);
9a2d6cb8 1660 if(peer->transfer->size != size)
d3372da9 1661 {
d3372da9 1662 transfersetsize(peer->transfer, size);
1fc81821 1663 transfer = peer->transfer;
d3372da9 1664 freedcpeer(peer);
1fc81821 1665 trytransferbypeer(transfer->fnet, transfer->peerid);
d3372da9 1666 return;
1667 }
9a2d6cb8 1668 startdl(peer);
1669 qstr(peer->sk, "$Send|");
d3372da9 1670}
1671
1672static void cmd_error(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1673{
df873cd0 1674 if(peer->fetchingtthl)
1675 {
1676 peer->fetchingtthl = 0;
1677 peer->notthl = 1;
1678 requestfile(peer);
1679 return;
1680 }
d3372da9 1681 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1682 {
1683 transferseterror(peer->transfer, TRNSE_NOTFOUND);
1684 resettransfer(peer->transfer);
1685 return;
1686 }
1687 freedcpeer(peer);
1688}
1689
1690static void cmd_maxedout(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1691{
1692 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1693 {
1694 transferseterror(peer->transfer, TRNSE_NOSLOTS);
1695 resettransfer(peer->transfer);
1696 return;
1697 }
1698 freedcpeer(peer);
1699}
1700
1701static struct
1702{
1703 char *name;
1704 char **file;
1705 void (*func)(void);
1706} lists[] =
1707{
1708 {"MyList.DcLst", &hmlistname, updatehmlist},
1709 {"files.xml", &xmllistname, updatexmllist},
1710 {"files.xml.bz2", &xmlbz2listname, updatexmlbz2list},
1711 {NULL, NULL}
1712};
1713
1714static int openfilelist(char *name)
1715{
1716 int i, fd;
1717 int errnobak;
1718
1719 for(i = 0; lists[i].name != NULL; i++)
1720 {
1721 if(!strcmp(name, lists[i].name))
1722 break;
1723 }
1724 errno = 0;
1725 if(lists[i].name == NULL)
1726 return(-1);
1727 fd = -1;
1728 if((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0))
1729 lists[i].func();
1730 if((fd < 0) && ((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0)))
1731 {
1732 errnobak = errno;
1733 flog(LOG_ERR, "could not open filelist tempfile: %s", strerror(errno));
1734 errno = errnobak;
1735 return(-1);
1736 }
1737 return(fd);
1738}
1739
1740static struct sharecache *findbytth(char *tth32)
1741{
1742 char *buf;
1743 size_t buflen;
1744 struct sharecache *node;
1745
1746 if((buf = base32decode(tth32, &buflen)) == NULL)
1747 return(NULL);
1748 if(buflen != 24)
1749 {
1750 free(buf);
1751 return(NULL);
1752 }
1753 for(node = shareroot->child; node != NULL; node = nextscnode(node))
1754 {
1755 if(node->f.b.hastth && !memcmp(node->hashtth, buf, 24))
1756 break;
1757 }
1758 free(buf);
1759 return(node);
1760}
1761
1762static struct sharecache *resdcpath(char *path, char *charset, char sep)
1763{
1764 struct sharecache *node;
1765 char *p, *p2;
1766
1767 node = shareroot;
1768 p = path;
1769 while(p != NULL)
1770 {
1771 if((p2 = strchr(p, sep)) != NULL)
1772 *(p2++) = 0;
1773 if((node = findcache(node, icsmbstowcs(p, charset, L""))) == NULL)
1774 return(NULL);
1775 p = p2;
1776 }
1777 return(node);
1778}
1779
1780static void cmd_get(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1781{
1782 int offset;
1783 char *p, *buf;
1784 wchar_t *buf2;
1785 struct sharecache *node;
1786 struct socket *lesk;
1787 int fd;
1788 struct stat sb;
1789
1790 if(peer->transfer == NULL)
1791 {
1792 freedcpeer(peer);
1793 return;
1794 }
1795 if((p = strchr(args, '$')) == NULL)
1796 {
1797 freedcpeer(peer);
1798 return;
1799 }
1800 *(p++) = 0;
1801 if((offset = (atoi(p) - 1)) < 0)
1802 {
1803 freedcpeer(peer);
1804 return;
1805 }
1806 if(((fd = openfilelist(args)) < 0) && (errno != 0))
1807 {
1808 qstr(sk, "$Error Could not send file list|");
1809 freedcpeer(peer);
1810 return;
1811 } else if(fd >= 0) {
1812 if((buf2 = icsmbstowcs(args, DCCHARSET, NULL)) != NULL)
1813 transfersetpath(peer->transfer, buf2);
f00d7432 1814 peer->transfer->flags.b.minislot = 1;
d3372da9 1815 }
1816 if(fd < 0)
1817 {
1d85f24b 1818 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 1819 if((node = resdcpath(args, DCCHARSET, '\\')) == NULL)
1820 {
1821 qstrf(sk, "$Error File not in share|");
1822 freedcpeer(peer);
1823 return;
1824 }
1825 if((fd = opensharecache(node)) < 0)
1826 {
1827 qstrf(sk, "$Error %s|", strerror(errno));
1828 freedcpeer(peer);
1829 return;
1830 }
1831 buf = getfspath(node);
1832 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1833 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1834 else
1835 transfersetpath(peer->transfer, buf2);
1836 free(buf);
1837 }
1838 if(fstat(fd, &sb) < 0)
1839 {
1840 close(fd);
1841 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1842 qstrf(sk, "$Error|");
1843 freedcpeer(peer);
1844 return;
1845 }
f00d7432 1846 if(sb.st_size < 65536)
1847 peer->transfer->flags.b.minislot = 1;
1848 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
565006d1 1849 close(fd);
f00d7432 1850 qstr(sk, "$MaxedOut|");
1851 freedcpeer(peer);
1852 return;
1853 }
d3372da9 1854 if((offset != 0) && (lseek(fd, offset, SEEK_SET) < 0))
1855 {
1856 close(fd);
1857 qstrf(sk, "$Error Offset out of range|");
1858 freedcpeer(peer);
1859 return;
1860 }
1861 lesk = wrapsock(fd);
1862 transferprepul(peer->transfer, sb.st_size, offset, -1, lesk);
1863 putsock(lesk);
1864 qstrf(sk, "$FileLength %i|", peer->transfer->size);
d3372da9 1865}
1866
1867static void cmd_send(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1868{
1869 if(peer->transfer == NULL)
1870 {
1871 freedcpeer(peer);
1872 return;
1873 }
1874 if(peer->transfer->localend == NULL)
1875 {
1876 freedcpeer(peer);
1877 return;
1878 }
1879 peer->ptclose = 1;
9a2d6cb8 1880 startul(peer);
d3372da9 1881}
1882
1883static void cmd_supports(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1884{
1885 int i;
1886 char *p, *p2;
1887 char **arr;
1888 size_t arrsize, arrdata;
1889
1890 if(peer->supports != NULL)
1891 {
1892 for(i = 0; peer->supports[i] != NULL; i++)
1893 free(peer->supports[i]);
1894 free(peer->supports);
1895 }
1896 arr = NULL;
1897 arrsize = arrdata = 0;
1898 p = args;
1899 do
1900 {
1901 if((p2 = strchr(p, ' ')) != NULL)
1902 *(p2++) = 0;
1903 if(*p == 0)
1904 continue;
1905 addtobuf(arr, sstrdup(p));
1906 } while((p = p2) != NULL);
1907 addtobuf(arr, NULL);
1908 peer->supports = arr;
d3372da9 1909}
1910
1911static void cmd_getblock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1912{
1913 int fd;
1914 char *p, *p2;
1915 int start, numbytes;
1916 char *charset, *buf;
1917 wchar_t *buf2;
1918 struct sharecache *node;
1919 struct stat sb;
1920 struct socket *lesk;
1921
1922 if(peer->transfer == NULL)
1923 {
1924 freedcpeer(peer);
1925 return;
1926 }
1927 p = args;
1928 if((p2 = strchr(p, ' ')) == NULL)
1929 {
1930 freedcpeer(peer);
1931 return;
1932 }
1933 *(p2++) = 0;
1934 start = atoi(p);
1935 p = p2;
1936 if((p2 = strchr(p, ' ')) == NULL)
1937 {
1938 freedcpeer(peer);
1939 return;
1940 }
1941 *(p2++) = 0;
1942 numbytes = atoi(p);
1943 p = p2;
1944 if(!strcmp(cmd, "$UGetBlock") || !strcmp(cmd, "$UGetZBlock"))
1945 charset = "UTF-8";
1946 else
1d85f24b 1947 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 1948 charset = DCCHARSET;
1949 if(!strcmp(cmd, "$GetZBlock") || !strcmp(cmd, "$UGetZBlock"))
1950 initcompress(peer, CPRS_ZLIB);
1951 if(((fd = openfilelist(p)) < 0) && (errno != 0))
1952 {
1953 qstr(sk, "$Error Could not send file list|");
1954 return;
1955 } else if(fd >= 0) {
1956 if((buf2 = icsmbstowcs(args, charset, NULL)) != NULL)
1957 transfersetpath(peer->transfer, buf2);
f00d7432 1958 peer->transfer->flags.b.minislot = 1;
d3372da9 1959 }
1960 if(fd < 0)
1961 {
d3372da9 1962 if((node = resdcpath(p, charset, '\\')) == NULL)
1963 {
1964 qstr(sk, "$Error File not in cache|");
1965 return;
1966 }
1967 if((fd = opensharecache(node)) < 0)
1968 {
1969 qstrf(sk, "$Error %s|", strerror(errno));
1970 return;
1971 }
1972 buf = getfspath(node);
1973 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1974 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1975 else
1976 transfersetpath(peer->transfer, buf2);
1977 free(buf);
1978 }
1979 if(fstat(fd, &sb) < 0)
1980 {
1981 close(fd);
1982 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1983 qstr(sk, "$Error|");
1984 return;
1985 }
f00d7432 1986 if(sb.st_size < 65536)
1987 peer->transfer->flags.b.minislot = 1;
1988 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
565006d1 1989 close(fd);
f00d7432 1990 qstr(sk, "$MaxedOut|");
1991 return;
1992 }
d3372da9 1993 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
1994 {
1995 close(fd);
1996 qstr(sk, "$Error Offset out of range|");
1997 return;
1998 }
1999 if((numbytes < 0) || (start + numbytes > sb.st_size))
2000 numbytes = sb.st_size - start;
2001 lesk = wrapsock(fd);
2002 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2003 putsock(lesk);
2004 qstrf(sk, "$Sending %i|", numbytes);
9a2d6cb8 2005 startul(peer);
d3372da9 2006}
2007
2008static void cmd_adcget(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2009{
2010 int i;
2011 char **argv, *buf;
2012 int start, numbytes;
2013 struct sharecache *node;
2014 struct stat sb;
2015 struct socket *lesk;
2016 wchar_t *wbuf;
2017 int fd;
2018
2019 if(peer->transfer == NULL)
2020 {
2021 freedcpeer(peer);
2022 return;
2023 }
2024 if((argv = parseadc(args)) == NULL)
2025 {
2026 freedcpeer(peer);
2027 return;
2028 }
2029 if(parrlen(argv) < 4)
2030 {
2031 freedcpeer(peer);
2032 goto out;
2033 }
2034 start = atoi(argv[2]);
2035 numbytes = atoi(argv[3]);
2036 node = NULL;
2037 fd = -1;
2038 if(((fd = openfilelist(argv[1])) < 0) && (errno != 0))
2039 {
2040 qstr(sk, "$Error Could not send file list|");
2041 goto out;
2042 } else if(fd >= 0) {
2043 if((wbuf = icsmbstowcs(argv[1], "UTF-8", NULL)) != NULL)
2044 transfersetpath(peer->transfer, wbuf);
f00d7432 2045 peer->transfer->flags.b.minislot = 1;
d3372da9 2046 }
2047 if(fd < 0)
2048 {
d3372da9 2049 if(!strncmp(argv[1], "TTH/", 4))
2050 {
2051 if((node = findbytth(argv[1] + 4)) == NULL)
2052 {
2053 qstr(sk, "$Error File not in cache|");
2054 goto out;
2055 }
2056 } else {
9a2d6cb8 2057 if((node = resdcpath((argv[1][0] == '/')?(argv[1] + 1):(argv[1]), "UTF-8", '/')) == NULL)
d3372da9 2058 {
2059 qstr(sk, "$Error File not in cache|");
2060 goto out;
2061 }
2062 }
2063 if((fd = opensharecache(node)) < 0)
2064 {
2065 qstrf(sk, "$Error %s|", strerror(errno));
2066 goto out;
2067 }
2068 buf = getfspath(node);
2069 if((wbuf = icsmbstowcs(buf, NULL, NULL)) == NULL)
2070 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
2071 else
2072 transfersetpath(peer->transfer, wbuf);
2073 free(buf);
2074 }
2075 if(!strcmp(argv[0], "file"))
2076 {
2077 for(i = 4; argv[i] != NULL; i++)
2078 {
2079 if(!strcmp(argv[i], "ZL1"))
2080 initcompress(peer, CPRS_ZLIB);
2081 }
2082 if(fstat(fd, &sb) < 0)
2083 {
2084 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
2085 qstr(sk, "$Error|");
2086 goto out;
2087 }
f00d7432 2088 if(sb.st_size < 65536)
2089 peer->transfer->flags.b.minislot = 1;
2090 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
2091 qstr(sk, "$MaxedOut|");
2092 goto out;
2093 }
d3372da9 2094 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
2095 {
2096 qstr(sk, "$Error Offset out of range|");
2097 goto out;
2098 }
2099 if((numbytes < 0) || (start + numbytes > sb.st_size))
2100 numbytes = sb.st_size - start;
2101 lesk = wrapsock(fd);
2102 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2103 putsock(lesk);
2104 fd = -1;
2105 qstr(sk, "$ADCSND");
2106 sendadc(sk, "file");
2107 sendadc(sk, argv[1]);
2108 sendadcf(sk, "%i", start);
2109 sendadcf(sk, "%i", numbytes);
2110 if(peer->compress == CPRS_ZLIB)
2111 sendadc(sk, "ZL1");
2112 qstr(sk, "|");
9a2d6cb8 2113 startul(peer);
d3372da9 2114 } else if(!strcmp(argv[0], "tthl")) {
2115 /*
2116 * XXX: Implement full TTHL support.
2117 *
2118 * In the meantime, this is better than nothing, since it at
2119 * least allows fetching of the TTH root if it isn't already
2120 * known.
2121 */
2122 if(node == NULL)
2123 {
2124 qstr(sk, "$Error no TTHL data for virtual files|");
2125 goto out;
2126 }
2127 qstr(sk, "$ADCSND");
2128 sendadc(sk, "tthl");
2129 sendadc(sk, argv[1]);
2130 sendadc(sk, "0");
2131 sendadc(sk, "24");
2132 qstr(sk, "|");
2133 sockqueue(sk, node->hashtth, 24);
2134 } else {
2135 qstr(sk, "$Error Namespace not implemented|");
2136 goto out;
2137 }
d3372da9 2138
2139 out:
2140 if(fd >= 0)
2141 close(fd);
2142 freeparr(argv);
2143}
2144
9a2d6cb8 2145static void handletthl(struct dcpeer *peer)
2146{
2147 char buf[24];
2148
2149 while(peer->inbufdata >= 24)
2150 {
2151 pushtigertree(&peer->tth, peer->inbuf);
2152 memmove(peer->inbuf, peer->inbuf + 24, peer->inbufdata -= 24);
e52006fe 2153 peer->curread += 24;
9a2d6cb8 2154 }
e52006fe 2155 if(peer->curread >= peer->totalsize)
9a2d6cb8 2156 {
1e9d82b1 2157 if(peer->timeout == NULL)
2158 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
9a2d6cb8 2159 peer->state = PEER_CMD;
2160 synctigertree(&peer->tth);
2161 restigertree(&peer->tth, buf);
2162 transfersethash(peer->transfer, newhash(L"TTH", 24, buf));
2163 requestfile(peer);
2164 }
2165}
2166
2167static void cmd_adcsnd(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2168{
2169 char **argv;
2170 int start, numbytes;
2171
2172 if(peer->transfer == NULL)
2173 {
2174 freedcpeer(peer);
2175 return;
2176 }
2177 if((argv = parseadc(args)) == NULL)
2178 {
2179 freedcpeer(peer);
2180 return;
2181 }
2182 if(parrlen(argv) < 4)
2183 {
2184 freedcpeer(peer);
2185 goto out;
2186 }
2187 start = atoi(argv[2]);
2188 numbytes = atoi(argv[3]);
2189 if(!strcmp(argv[0], "tthl"))
2190 {
2191 if((start != 0) || (numbytes % 24 != 0))
2192 {
2193 /* Weird. Bail out. */
2194 freedcpeer(peer);
2195 goto out;
2196 }
1e9d82b1 2197 if(peer->timeout != NULL)
2198 canceltimer(peer->timeout);
9a2d6cb8 2199 peer->state = PEER_TTHL;
2200 peer->totalsize = numbytes;
2201 peer->curread = 0;
df873cd0 2202 peer->fetchingtthl = 0;
9a2d6cb8 2203 inittigertree(&peer->tth);
2204 handletthl(peer);
2205 } else if(!strcmp(argv[0], "file")) {
2206 if(start != peer->transfer->curpos)
2207 {
2208 freedcpeer(peer);
2209 goto out;
2210 }
2211 if(start + numbytes != peer->transfer->size)
2212 {
2213 transfersetsize(peer->transfer, start + numbytes);
2214 freedcpeer(peer);
2215 goto out;
2216 }
2217 startdl(peer);
5ec60e42 2218 transread(peer);
9a2d6cb8 2219 } else {
2220 /* We certainly didn't request this...*/
2221 freedcpeer(peer);
2222 goto out;
2223 }
2224
2225 out:
2226 freeparr(argv);
2227}
2228
2229static void cmd_sending(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2230{
2231 int numbytes;
2232
2233 if(peer->transfer == NULL)
2234 {
2235 freedcpeer(peer);
2236 return;
2237 }
2238 numbytes = atoi(args);
2239 if(peer->transfer->size - peer->transfer->curpos != numbytes)
2240 {
2241 transfersetsize(peer->transfer, peer->transfer->curpos + numbytes);
2242 freedcpeer(peer);
2243 return;
2244 }
2245 startdl(peer);
5ec60e42 2246 transread(peer);
9a2d6cb8 2247}
2248
d3372da9 2249/*
2250Hub skeleton:
2251static void cmd_(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
2252{
2253 struct dchub *hub;
2254
2255 hub = fn->data;
2256 hubhandleaction(sk, fn, cmd, args);
2257}
2258
2259Peer skeleton:
2260static void cmd_(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2261{
d3372da9 2262}
2263
2264*/
2265
2266static int hubreqconn(struct fnetpeer *peer)
2267{
2268 struct dchub *hub;
2269 char *mbsnick;
2270
2271 if((peer->fn->state != FNN_EST) || (peer->fn->fnet != &dcnet))
2272 {
2273 errno = EINVAL;
2274 return(1);
2275 }
2276 if((hub = peer->fn->data) == NULL)
2277 {
2278 errno = EFAULT;
2279 return(1);
2280 }
1d85f24b 2281 if((mbsnick = icwcstombs(peer->id, hub->charset)) == NULL)
d3372da9 2282 return(1); /* Shouldn't happen, of course, but who knows... */
2283 if(tcpsock != NULL)
2284 {
2285 sendctm(peer->fn->sk, mbsnick);
2286 expectpeer(mbsnick, peer->fn);
2287 } else {
2288 qstrf(peer->fn->sk, "$RevConnectToMe %s %s|", hub->nativenick, mbsnick);
2289 }
2290 free(mbsnick);
2291 return(0);
2292}
2293
2294static int hubsendchat(struct fnetnode *fn, int public, wchar_t *to, wchar_t *string)
2295{
2296 struct dchub *hub;
2297 char *mbsstring, *mbsto;
2298
2299 hub = fn->data;
1d85f24b 2300 if((mbsto = icwcstombs(to, hub->charset)) == NULL)
d3372da9 2301 {
2302 errno = EILSEQ;
2303 return(1);
2304 }
1d85f24b 2305 if((mbsstring = icwcstombs(string, hub->charset)) == NULL)
d3372da9 2306 {
2307 errno = EILSEQ;
2308 return(1);
2309 }
2310 if((strchr(mbsto, '|') != NULL) || (strchr(mbsto, ' ') != NULL))
2311 {
2312 free(mbsto);
2313 free(mbsstring);
2314 errno = ESRCH;
2315 return(1);
2316 }
2317 if(strchr(mbsstring, '|') != NULL)
2318 {
2319 free(mbsto);
2320 free(mbsstring);
2321 errno = EILSEQ;
2322 return(1);
2323 }
2324 if(public)
2325 {
2326 if(*to == L'\0')
2327 {
2328 qstrf(fn->sk, "<%s> %s|", hub->nativenick, mbsstring);
2329 } else {
2330 qstrf(fn->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2331 }
2332 } else {
2333 qstrf(fn->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2334 }
2335 free(mbsto);
2336 free(mbsstring);
2337 return(0);
2338}
2339
2340static void findsizelimit(struct sexpr *sexpr, int *min, int *max)
2341{
2342 int minl, maxl, minr, maxr, retmin, retmax;
2343
2344 switch(sexpr->op)
2345 {
2346 case SOP_AND:
2347 findsizelimit(sexpr->l, &minl, &maxl);
2348 findsizelimit(sexpr->r, &minr, &maxr);
2349 retmin = (minl > minr)?minl:minr;
2350 if((maxl != -1) && (maxr != -1))
2351 retmax = (maxl < maxr)?maxl:maxr;
2352 else if(maxl != -1)
2353 retmax = maxl;
2354 else if(maxr != -1)
2355 retmax = maxr;
2356 else
2357 retmax = -1;
2358 break;
2359 case SOP_OR:
2360 findsizelimit(sexpr->l, &minl, &maxl);
2361 findsizelimit(sexpr->r, &minr, &maxr);
2362 retmin = (minl < minr)?minl:minr;
2363 if((maxl == -1) || (maxr == -1))
2364 retmax = -1;
2365 else
2366 retmax = (maxl > maxr)?maxl:maxr;
2367 break;
2368 case SOP_NOT:
2369 findsizelimit(sexpr->l, &minl, &maxl);
2370 if((minl == 0) && (maxl == -1)) /* Interval is unspecified */
2371 {
2372 retmin = 0;
2373 retmax = -1;
2374 } else if((minl == 0) && (maxl != -1)) {
2375 retmin = maxl + 1;
2376 retmax = -1;
2377 } else if((minl != 0) && (maxl == -1)) {
2378 retmin = 0;
2379 retmax = minl - 1;
2380 } else { /* This would yield two seperate intervals, which DC cannot handle */
2381 retmin = 0;
2382 retmax = -1;
2383 }
2384 case SOP_SIZELT:
2385 retmin = 0;
2386 retmax = sexpr->d.n - 1;
2387 break;
2388 case SOP_SIZEEQ:
2389 retmin = sexpr->d.n;
2390 retmax = sexpr->d.n;
2391 break;
2392 case SOP_SIZEGT:
2393 retmin = sexpr->d.n + 1;
2394 retmax = -1;
2395 break;
2396 default:
2397 retmin = 0;
2398 retmax = -1;
2399 break;
2400 }
2401 if(min != NULL)
2402 *min = retmin;
2403 if(max != NULL)
2404 *max = retmax;
2405}
2406
9d8cf743 2407static struct hash *findsehash(struct sexpr *sexpr)
2408{
2409 struct hash *h1, *h2;
2410
2411 switch(sexpr->op)
2412 {
2413 case SOP_AND:
2414 if((h1 = findsehash(sexpr->l)) != NULL)
2415 return(h1);
2416 if((h1 = findsehash(sexpr->r)) != NULL)
2417 return(h1);
2418 break;
2419 case SOP_OR:
175c86de 2420 if((h1 = findsehash(sexpr->l)) == NULL)
2421 return(NULL);
2422 if((h2 = findsehash(sexpr->r)) == NULL)
2423 return(NULL);
9d8cf743 2424 if(hashcmp(h1, h2))
2425 return(h1);
2426 break;
2427 case SOP_HASHIS:
2428 if(!wcscmp(sexpr->d.hash->algo, L"TTH"))
2429 return(sexpr->d.hash);
2430 default:
2431 break;
2432 }
2433 return(NULL);
2434}
2435
d3372da9 2436static int hubsearch(struct fnetnode *fn, struct search *srch, struct srchfnnlist *ln)
2437{
2438 struct dchub *hub;
2439 struct wcslist *list, *cur;
2440 char *sstr, *buf, *p;
2441 size_t sstrsize, sstrdata;
2442 struct sockaddr *name;
2443 socklen_t namelen;
2444 int minsize, maxsize;
9d8cf743 2445 struct hash *hash;
d3372da9 2446
2447 hub = fn->data;
2448 if((fn->state != FNN_EST) || (fn->sk == NULL) || (fn->sk->state != SOCK_EST))
2449 return(1);
2450 list = findsexprstrs(srch->sexpr);
2451 findsizelimit(srch->sexpr, &minsize, &maxsize);
9d8cf743 2452 hash = findsehash(srch->sexpr);
d3372da9 2453 if((minsize != 0) && (maxsize != -1))
2454 {
2455 /* Choose either minsize or maxsize by trying to determine
2456 * which choice will be most restrictive. The result can be
2457 * approximative at best anyway, so don't try too hard... */
2458 if((50000000 - maxsize) > (minsize - 50000000))
2459 minsize = 0;
2460 else
2461 maxsize = -1;
2462 }
d3372da9 2463 sstr = NULL;
2464 sstrsize = sstrdata = 0;
9d8cf743 2465 if((hash != NULL) && (hash->len == 24))
d3372da9 2466 {
9d8cf743 2467 /* Prioritize hash searches above all else */
2468 bufcat(sstr, "F?T?0?9?TTH:", 12);
2469 buf = base32encode(hash->buf, hash->len);
2470
2471 bufcat(sstr, buf, 39);
2472 free(buf);
2473 } else {
2474 if(minsize != 0)
d3372da9 2475 {
9d8cf743 2476 sizebuf2(sstr, sstrdata + 32, 1);
fe42d689 2477 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?F?%i?1?", minsize);
9d8cf743 2478 } else if(maxsize != -1) {
2479 sizebuf2(sstr, sstrdata + 32, 1);
fe42d689 2480 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?T?%i?1?", maxsize);
9d8cf743 2481 } else {
2482 bufcat(sstr, "F?F?0?1?", 8);
2483 }
2484 if(list != NULL)
2485 {
2486 for(cur = list; cur != NULL; cur = cur->next)
d3372da9 2487 {
1d85f24b 2488 /* Use DCCHARSET in $Get paths until further researched... */
9d8cf743 2489 if((buf = icwcstombs(cur->str, DCCHARSET)) == NULL)
2490 {
2491 /* Can't find anything anyway if the search expression
2492 * requires characters outside DC's charset. There's
2493 * nothing technically wrong with the search itself,
2494 * however, so return success. This should be
2495 * considered as an optimization. */
2496 freesl(&list);
2497 if(sstr != NULL)
2498 free(sstr);
2499 return(0);
2500 }
2501 if(cur != list)
2502 addtobuf(sstr, '$');
2503 /*
2504 * It probably doesn't hurt if buf contains any extra
2505 * dollar signs - it will just result in extra search
2506 * terms, and the extraneous results will be filtered by
2507 * the search layer anyway. It hurts if it contains any
2508 * pipes, though, so let's sell them for money.
2509 */
2510 for(p = buf; *p; p++)
2511 {
2512 if(*p == '|')
2513 *p = '$';
2514 }
2515 bufcat(sstr, buf, strlen(buf));
2516 free(buf);
d3372da9 2517 }
9d8cf743 2518 } else {
2519 /* Will match all files... :-/ */
2520 addtobuf(sstr, '.');
d3372da9 2521 }
d3372da9 2522 }
2523 addtobuf(sstr, 0);
2524 if(tcpsock != NULL)
2525 {
9b5acc18 2526 if(sockgetremotename2(udpsock, fn->sk, &name, &namelen) < 0)
d3372da9 2527 {
2528 flog(LOG_WARNING, "cannot get address of UDP socket");
2529 } else {
9d8cf743 2530 qstrf(fn->sk, "$Search %s %s|", formataddress(name, namelen), sstr);
d3372da9 2531 free(name);
2532 }
2533 } else {
9d8cf743 2534 qstrf(fn->sk, "$Search Hub:%s %s|", hub->nativenick, sstr);
d3372da9 2535 }
2536 free(sstr);
2537 freesl(&list);
2538 fn->lastsrch = time(NULL);
2539 return(0);
2540}
2541
2542#undef skipcmd
2543#undef qstr
2544#undef qstrf
2545
2546#define cc(c) ((void (*)(struct socket *, void *, char *, char *))(c))
8b930085 2547static struct command hubcmds[] =
d3372da9 2548{
2549 {"$Lock", cc(cmd_lock)},
2550 {"$HubName", cc(cmd_hubname)},
2551 {"$Hello", cc(cmd_hello)},
2552 {"$Quit", cc(cmd_quit)},
2553 {"$NickList", cc(cmd_nicklist)},
2554 {"$OpList", cc(cmd_oplist)},
2555 {"$MyINFO", cc(cmd_myinfo)},
2556 {"$ForceMove", cc(cmd_forcemove)},
2557 {"$Search", cc(cmd_search)},
2558 {"$MultiSearch", cc(cmd_search)},
2559 {"$ConnectToMe", cc(cmd_connecttome)},
2560 {"$RevConnectToMe", cc(cmd_revconnecttome)},
2561 {"$GetNetInfo", cc(cmd_getnetinfo)},
2562 {"$To:", cc(cmd_to)},
2563 {"$SR", cc(cmd_sr)},
2564 {"$UserCommand", cc(cmd_usercommand)},
48509089 2565 {"$GetPass", cc(cmd_getpass)},
c9b3ad74 2566 {"$LogedIn", cc(cmd_logedin)}, /* sic */
d3372da9 2567 {NULL, NULL}
2568};
2569
8b930085 2570static struct command peercmds[] =
d3372da9 2571{
2572 {"$MyNick", cc(cmd_mynick)},
2573 {"$Lock", cc(cmd_peerlock)},
2574 {"$Direction", cc(cmd_direction)},
2575 {"$Key", cc(cmd_key)},
2576 {"$FileLength", cc(cmd_filelength)},
2577 {"$Error", cc(cmd_error)},
2578 {"$MaxedOut", cc(cmd_maxedout)},
2579 {"$Get", cc(cmd_get)},
2580 {"$Send", cc(cmd_send)},
2581 {"$Supports", cc(cmd_supports)},
2582 {"$GetBlock", cc(cmd_getblock)},
2583 {"$UGetBlock", cc(cmd_getblock)},
2584 {"$GetZBlock", cc(cmd_getblock)},
2585 {"$UGetZBlock", cc(cmd_getblock)},
2586 {"$ADCGET", cc(cmd_adcget)},
9a2d6cb8 2587 {"$ADCSND", cc(cmd_adcsnd), 1},
2588 {"$Sending", cc(cmd_sending), 1},
d3372da9 2589 {NULL, NULL}
2590};
2591#undef cc
2592
2593static void dctransdetach(struct transfer *transfer, struct dcpeer *peer)
2594{
5ec60e42 2595 CBUNREG(transfer, trans_filterout, trresumecb, peer);
d3372da9 2596 if(peer->freeing)
2597 return;
2598 peer->transfer = NULL;
2599 freedcpeer(peer);
2600}
2601
2602static void dctransgotdata(struct transfer *transfer, struct dcpeer *peer)
2603{
2604 int ret;
2605 void *buf;
c7185019 2606 unsigned char outbuf[1024];
d3372da9 2607 z_stream *cstr;
2608 size_t bufsize;
2609
2610 if((peer->state == PEER_TRNS) || (peer->state == PEER_SYNC))
2611 {
2612 if(sockqueuesize(peer->sk) < 65536)
2613 {
2614 if((buf = transfergetdata(transfer, &bufsize)) != NULL)
2615 {
2616 if(peer->compress == CPRS_NONE)
2617 {
2618 sockqueue(peer->sk, buf, bufsize);
2619 } else if(peer->compress == CPRS_ZLIB) {
2620 cstr = peer->cprsdata;
2621 cstr->next_in = buf;
2622 cstr->avail_in = bufsize;
2623 while(cstr->avail_in > 0)
2624 {
2625 cstr->next_out = outbuf;
2626 cstr->avail_out = sizeof(outbuf);
2627 if((ret = deflate(cstr, 0)) != Z_OK)
2628 {
2629 flog(LOG_WARNING, "bug? deflate() did not return Z_OK (but rather %i)", ret);
2630 freedcpeer(peer);
2631 return;
2632 }
2633 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2634 }
2635 }
2636 free(buf);
2637 }
2638 if(peer->state == PEER_SYNC)
2639 {
2640 if(peer->compress == CPRS_ZLIB)
2641 {
2642 cstr = peer->cprsdata;
2643 cstr->next_in = NULL;
2644 cstr->avail_in = 0;
2645 do
2646 {
2647 cstr->next_out = outbuf;
2648 cstr->avail_out = sizeof(outbuf);
2649 ret = deflate(cstr, Z_FINISH);
2650 if((ret != Z_OK) && (ret != Z_STREAM_END))
2651 {
2652 flog(LOG_WARNING, "bug? deflate(Z_FINISH) did not return Z_OK (but rather %i)", ret);
2653 freedcpeer(peer);
2654 return;
2655 }
2656 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2657 } while(ret != Z_STREAM_END);
2658 }
2659 if(peer->ptclose)
2660 {
2661 freedcpeer(peer);
2662 } else {
1e9d82b1 2663 if(peer->timeout == NULL)
2664 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 2665 peer->state = PEER_CMD;
2666 endcompress(peer);
2667 transfersetstate(transfer, TRNS_HS);
2668 socksettos(peer->sk, confgetint("fnet", "fnptos"));
bfc261fe 2669 transfer->flags.b.minislot = 0;
5ec60e42 2670 CBUNREG(peer->sk, socket_write, transwrite, peer);
d3372da9 2671 }
2672 }
2673 }
2674 }
2675}
2676
2677static void dctransendofdata(struct transfer *transfer, struct dcpeer *peer)
2678{
2679 peer->state = PEER_SYNC;
2680 dctransgotdata(transfer, peer);
2681}
2682
2683static void dcwantdata(struct transfer *transfer, struct dcpeer *peer)
2684{
2685 if(transferdatasize(transfer) < 65536)
2686 peer->sk->ignread = 0;
2687}
2688
5ec60e42 2689static void transread(struct dcpeer *peer)
d3372da9 2690{
5ec60e42 2691 size_t num;
d3372da9 2692 struct transfer *transfer;
2693
d3372da9 2694 if(peer->transfer == NULL)
2695 {
d3372da9 2696 freedcpeer(peer);
2697 return;
2698 }
5ec60e42 2699 if(peer->inbufsize > peer->transfer->size - peer->transfer->curpos)
2700 num = peer->transfer->size - peer->transfer->curpos;
2701 else
2702 num = peer->inbufsize;
2703 transferputdata(peer->transfer, peer->inbuf, num);
2704 memmove(peer->inbuf, peer->inbuf + num, peer->inbufsize -= num);
d3372da9 2705 if(peer->transfer->curpos >= peer->transfer->size)
2706 {
2707 transfer = peer->transfer;
2708 transferdetach(transfer);
2709 transferendofdata(transfer);
2710 return;
2711 }
2712 if(transferdatasize(peer->transfer) > 65535)
5ec60e42 2713 peer->sk->ignread = 1;
d3372da9 2714}
2715
5ec60e42 2716static void transerr(struct dcpeer *peer)
d3372da9 2717{
2718 struct transfer *transfer;
2719
2720 if((transfer = peer->transfer) == NULL)
d3372da9 2721 return;
d3372da9 2722 transferdetach(transfer);
2723 transferendofdata(transfer);
2724}
2725
5ec60e42 2726static int transwrite(struct socket *sk, struct dcpeer *peer)
d3372da9 2727{
2728 if((peer->state != PEER_TRNS) && (peer->state != PEER_SYNC))
5ec60e42 2729 return(1);
d3372da9 2730 if(peer->transfer == NULL)
2731 {
2732 freedcpeer(peer);
5ec60e42 2733 return(1);
d3372da9 2734 }
2735 dctransgotdata(peer->transfer, peer);
5ec60e42 2736 return(0);
d3372da9 2737}
2738
5ec60e42 2739static int udpread(struct socket *sk, void *data)
d3372da9 2740{
d86b7a9f 2741 char *buf, *p, *p2, *hashbuf;
2742 size_t buflen, hashlen;
d3372da9 2743 char *nick, *filename, *hubname;
99a28d47 2744 struct sockaddr_in hubaddr;
d3372da9 2745 int size, slots;
2746 struct fnetnode *fn, *myfn;
2747 struct dchub *hub;
2748 struct srchres *sr;
2749 wchar_t *wnick, *wfile;
d86b7a9f 2750 struct hash *hash;
d3372da9 2751
2752 if((buf = sockgetinbuf(sk, &buflen)) == NULL)
5ec60e42 2753 return(0);
d3372da9 2754 buf = srealloc(buf, buflen + 1);
2755 buf[buflen] = 0;
2756 if(!strncmp(buf, "$SR ", 4))
2757 {
2758 p = buf + 4;
2759 nick = p;
2760 if((p2 = strchr(p, ' ')) == NULL)
2761 {
2762 free(buf);
5ec60e42 2763 return(0);
d3372da9 2764 }
2765 *p2 = 0;
2766 p = p2 + 1;
2767 filename = p;
2768 if((p2 = strchr(p, 5)) == NULL)
2769 {
2770 free(buf);
5ec60e42 2771 return(0);
d3372da9 2772 }
2773 *p2 = 0;
2774 p = p2 + 1;
2775 if((p2 = strchr(p, ' ')) == NULL)
2776 {
2777 free(buf);
5ec60e42 2778 return(0);
d3372da9 2779 }
2780 *p2 = 0;
2781 size = atoi(p);
2782 p = p2 + 1;
2783 if((p2 = strchr(p, '/')) == NULL)
2784 {
2785 free(buf);
5ec60e42 2786 return(0);
d3372da9 2787 }
2788 *p2 = 0;
2789 slots = atoi(p);
2790 p = p2 + 1;
2791 if((p2 = strchr(p, 5)) == NULL)
2792 {
2793 free(buf);
5ec60e42 2794 return(0);
d3372da9 2795 }
2796 p = p2 + 1;
2797 hubname = p;
2798 if((p2 = strstr(p, " (")) == NULL)
2799 {
2800 free(buf);
5ec60e42 2801 return(0);
d3372da9 2802 }
2803 *p2 = 0;
99a28d47 2804 p = p2 + 2;
2805 if((p2 = strchr(p, ':')) == NULL)
2806 {
2807 free(buf);
5ec60e42 2808 return(0);
99a28d47 2809 }
870bf4ad 2810 *(p2++) = 0;
99a28d47 2811 hubaddr.sin_family = AF_INET;
2812 if(!inet_aton(p, &hubaddr.sin_addr))
2813 {
2814 free(buf);
5ec60e42 2815 return(0);
99a28d47 2816 }
2817 p = p2;
2818 if((p2 = strchr(p, ')')) == NULL)
2819 {
2820 free(buf);
5ec60e42 2821 return(0);
99a28d47 2822 }
2823 *p2 = 0;
2824 hubaddr.sin_port = htons(atoi(p));
1d85f24b 2825 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 2826 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
2827 {
d3372da9 2828 free(buf);
5ec60e42 2829 return(0);
d3372da9 2830 }
2831 myfn = NULL;
d86b7a9f 2832 hash = NULL;
2833 if(!strncmp(hubname, "TTH:", 4))
d3372da9 2834 {
d86b7a9f 2835 if((hashbuf = base32decode(hubname + 4, &hashlen)) != NULL)
2836 {
2837 if(hashlen == 24)
2838 hash = newhash(L"TTH", 24, hashbuf);
2839 free(hashbuf);
2840 }
2841 } else {
2842 for(fn = fnetnodes; fn != NULL; fn = fn->next)
d3372da9 2843 {
d86b7a9f 2844 if((fn->fnet == &dcnet) && ((hub = fn->data) != NULL))
d3372da9 2845 {
d86b7a9f 2846 if((hub->nativename != NULL) && !strcmp(hub->nativename, hubname))
d3372da9 2847 {
d86b7a9f 2848 if(myfn == NULL)
2849 {
2850 myfn = fn;
2851 } else {
2852 myfn = NULL;
2853 break;
2854 }
d3372da9 2855 }
2856 }
2857 }
2858 }
99a28d47 2859 if(myfn == NULL)
2860 {
2861 for(fn = fnetnodes; fn != NULL; fn = fn->next)
2862 {
39cc1b93 2863 if((fn->fnet == &dcnet) && (fn->sk != NULL) && addreq(fn->sk->remote, (struct sockaddr *)&hubaddr))
99a28d47 2864 {
2865 myfn = fn;
2866 break;
2867 }
2868 }
2869 }
1d85f24b 2870 hub = NULL;
2871 if(myfn != NULL)
2872 hub = myfn->data;
2873 if((wnick = icmbstowcs(nick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
2874 {
2875 free(buf);
5ec60e42 2876 return(0);
1d85f24b 2877 }
d3372da9 2878 sr = newsrchres(&dcnet, wfile, wnick);
2879 if(sr->peernick != NULL)
2880 free(sr->peernick);
2881 sr->peernick = swcsdup(wnick);
2882 sr->size = size;
2883 sr->slots = slots;
2884 free(wfile);
2885 free(wnick);
2886 if(myfn != NULL)
2887 getfnetnode(sr->fn = myfn);
d86b7a9f 2888 if(hash != NULL)
2889 sr->hash = hash;
d3372da9 2890 submitsrchres(sr);
2891 freesrchres(sr);
2892 }
2893 free(buf);
5ec60e42 2894 return(0);
d3372da9 2895}
2896
2897static void hubread(struct socket *sk, struct fnetnode *fn)
2898{
2899 struct dchub *hub;
2900 char *newbuf;
2901 size_t datalen;
2902 char *p;
2903
2904 hub = (struct dchub *)fn->data;
2905 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
2906 return;
2907 if(hub->inbufdata > 500000) /* Discard possible malicious data */
2908 hub->inbufdata = 0;
2909 sizebuf2(hub->inbuf, hub->inbufdata + datalen, 1);
2910 memcpy(hub->inbuf + hub->inbufdata, newbuf, datalen);
2911 free(newbuf);
2912 p = hub->inbuf + hub->inbufdata;
2913 hub->inbufdata += datalen;
2914 while((datalen > 0) && ((p = memchr(p, '|', datalen)) != NULL))
2915 {
2916 *(p++) = 0;
2917 newqcmd(&hub->queue, hub->inbuf);
2918 memmove(hub->inbuf, p, hub->inbufdata -= p - hub->inbuf);
2919 datalen = hub->inbufdata;
2920 p = hub->inbuf;
2921 }
2922}
2923
2924static void huberr(struct socket *sk, int err, struct fnetnode *fn)
2925{
2926 killfnetnode(fn);
2927}
2928
2929static int hubsetnick(struct fnetnode *fn, wchar_t *newnick)
2930{
2931 struct dchub *hub;
2932 char *buf;
2933
2934 hub = fn->data;
1d85f24b 2935 if((buf = icwcstombs(newnick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
d3372da9 2936 return(1);
2937 if((strchr(buf, ' ') != NULL) || (strchr(buf, '|') != NULL) || (strchr(buf, '$') != NULL))
2938 {
2939 free(buf);
2940 return(1);
2941 }
2942 if(hub == NULL) /* Not yet connected */
2943 {
2944 free(buf);
2945 return(0);
2946 }
2947 if(hub->nativenick != NULL)
2948 free(hub->nativenick);
2949 hub->nativenick = buf;
2950 return(0);
2951}
2952
2953static struct dchub *newdchub(struct fnetnode *fn)
2954{
2955 struct dchub *new;
1c4b02cd 2956 wchar_t *emu;
1d85f24b 2957 wchar_t *wcharset;
2958 char *charset;
d3372da9 2959
2960 new = smalloc(sizeof(*new));
2961 memset(new, 0, sizeof(*new));
2962 fn->data = new;
1c4b02cd 2963 if(confgetint("dc", "dcppemu"))
2964 new->dcppemu = 1;
2965 if((emu = wpfind(fn->args, L"dcppemu")) != NULL)
2966 {
2967 if(*emu == L'y')
2968 new->dcppemu = 1;
2969 if(*emu == L'n')
2970 new->dcppemu = 0;
2971 }
1d85f24b 2972 charset = NULL;
2973 if((wcharset = wpfind(fn->args, L"charset")) != NULL)
2974 {
2975 if((charset = icwcstombs(wcharset, "US-ASCII")) != NULL)
2976 {
2977 if(!havecharset(charset))
2978 {
2979 free(charset);
2980 charset = NULL;
2981 }
2982 }
2983 }
2984 if(charset != NULL)
2985 new->charset = charset;
2986 else
2987 new->charset = sstrdup(DCCHARSET);
d3372da9 2988 if(hubsetnick(fn, fn->mynick))
2989 fnetsetnick(fn, L"DoldaConnectUser-IN");
2990 /* IN as in Invalid Nick */
2991 return(new);
2992}
2993
2994static struct dcpeer *newdcpeer(struct socket *sk)
2995{
2996 struct dcpeer *new;
2997
2998 new = smalloc(sizeof(*new));
2999 memset(new, 0, sizeof(*new));
3000 new->transfer = NULL;
3001 getsock(sk);
3002 new->sk = sk;
1c4b02cd 3003 if(confgetint("dc", "dcppemu"))
3004 new->dcppemu = 1;
d3372da9 3005 new->next = peers;
3006 new->prev = NULL;
3007 if(peers != NULL)
3008 peers->prev = new;
3009 peers = new;
3010 numdcpeers++;
3011 return(new);
3012}
3013
3014static void freedcpeer(struct dcpeer *peer)
3015{
3016 int i;
3017 struct qcommand *qcmd;
3018
3019 peer->freeing = 1;
3020 if(peers == peer)
3021 peers = peer->next;
3022 if(peer->next != NULL)
3023 peer->next->prev = peer->prev;
3024 if(peer->prev != NULL)
3025 peer->prev->next = peer->next;
3026 if(peer->transfer != NULL)
3027 {
3028 if(peer->transfer->dir == TRNSD_UP)
3029 peer->transfer->close = 1;
3030 if(peer->transfer->dir == TRNSD_DOWN)
3031 resettransfer(peer->transfer);
3032 transferdetach(peer->transfer);
3033 }
1e9d82b1 3034 if(peer->timeout != NULL)
3035 canceltimer(peer->timeout);
5ec60e42 3036 /* XXX: Unregister transwrite from peer->sk->socket_write? */
3037 CBUNREG(peer->sk, socket_read, peerread, peer);
3038 CBUNREG(peer->sk, socket_err, peererror, peer);
d3372da9 3039 putsock(peer->sk);
3040 endcompress(peer);
3041 if(peer->supports != NULL)
3042 {
3043 for(i = 0; peer->supports[i] != NULL; i++)
3044 free(peer->supports[i]);
3045 free(peer->supports);
3046 }
d3372da9 3047 if(peer->inbuf != NULL)
3048 free(peer->inbuf);
3049 if(peer->key != NULL)
3050 free(peer->key);
3051 if(peer->wcsname != NULL)
3052 free(peer->wcsname);
3053 if(peer->nativename != NULL)
3054 free(peer->nativename);
1d85f24b 3055 if(peer->charset != NULL)
3056 free(peer->charset);
d3372da9 3057 if(peer->fn != NULL)
3058 putfnetnode(peer->fn);
3059 while((qcmd = ulqcmd(&peer->queue)) != NULL)
3060 freeqcmd(qcmd);
3061 free(peer);
3062 numdcpeers--;
3063}
3064
3065static void hubconnect(struct fnetnode *fn)
3066{
5ec60e42 3067 CBREG(fn->sk, socket_read, (int (*)(struct socket *, void *))hubread, (void (*)(void *))putfnetnode, getfnetnode(fn));
3068 CBREG(fn->sk, socket_err, (int (*)(struct socket *, int, void *))huberr, (void (*)(void *))putfnetnode, getfnetnode(fn));
d3372da9 3069 fn->data = newdchub(fn);
d3372da9 3070 return;
3071}
3072
3073static void hubdestroy(struct fnetnode *fn)
3074{
3075 struct dchub *hub;
3076 struct qcommand *qcmd;
3077
3078 hub = (struct dchub *)fn->data;
5ec60e42 3079 if(fn->sk != NULL)
d3372da9 3080 {
5ec60e42 3081 CBUNREG(fn->sk, socket_read, hubread, fn);
3082 CBUNREG(fn->sk, socket_err, huberr, fn);
d3372da9 3083 }
3084 if(hub == NULL)
3085 return;
3086 while((qcmd = ulqcmd(&hub->queue)) != NULL)
3087 freeqcmd(qcmd);
3088 if(hub->nativename != NULL)
3089 free(hub->nativename);
3090 if(hub->nativenick != NULL)
3091 free(hub->nativenick);
1d85f24b 3092 if(hub->charset != NULL)
3093 free(hub->charset);
d3372da9 3094 if(hub->inbuf != NULL)
3095 free(hub->inbuf);
3096 free(hub);
3097}
3098
3099static wchar_t *dcbasename(wchar_t *filename)
3100{
3101 wchar_t *ret;
3102
3103 if((ret = wcsrchr(filename, L'\\')) != NULL)
3104 return(ret + 1);
3105 return(filename);
3106}
3107
3108static struct transferiface dctransfer =
3109{
3110 .detach = (void (*)(struct transfer *, void *))dctransdetach,
3111 .gotdata = (void (*)(struct transfer *, void *))dctransgotdata,
3112 .endofdata = (void (*)(struct transfer *, void *))dctransendofdata,
3113 .wantdata = (void (*)(struct transfer *, void *))dcwantdata
3114};
3115
3116static struct fnet dcnet =
3117{
3118 .name = L"dc",
3119 .connect = hubconnect,
3120 .destroy = hubdestroy,
3121 .setnick = hubsetnick,
3122 .reqconn = hubreqconn,
3123 .sendchat = hubsendchat,
3124 .search = hubsearch,
3125 .filebasename = dcbasename
3126};
3127
5ec60e42 3128static void cmdread(struct dcpeer *peer)
d3372da9 3129{
5ec60e42 3130 char *p;
9a2d6cb8 3131 struct command *cmd;
d3372da9 3132
5ec60e42 3133 p = peer->inbuf;
3134 while((peer->inbufdata > 0) && (p = memchr(peer->inbuf, '|', peer->inbufdata)) != NULL)
3135 {
3136 *(p++) = 0;
3137 newqcmd(&peer->queue, peer->inbuf);
3138 for(cmd = peercmds; cmd->handler != NULL; cmd++)
3139 {
3140 if(!memcmp(peer->inbuf, cmd->name, strlen(cmd->name)) && ((peer->inbuf[strlen(cmd->name)] == ' ') || (peer->inbuf[strlen(cmd->name)] == '|')))
3141 break;
3142 }
3143 memmove(peer->inbuf, p, peer->inbufdata -= p - peer->inbuf);
3144 if(cmd->stop)
3145 {
3146 peer->state = PEER_STOP;
3147 break;
3148 }
3149 }
3150}
3151
3152static int peerread(struct socket *sk, struct dcpeer *peer)
3153{
3154 char *newbuf;
3155 size_t datalen;
3156
d3372da9 3157 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
5ec60e42 3158 return(0);
d3372da9 3159 sizebuf2(peer->inbuf, peer->inbufdata + datalen, 1);
3160 memcpy(peer->inbuf + peer->inbufdata, newbuf, datalen);
3161 free(newbuf);
d3372da9 3162 peer->inbufdata += datalen;
9a2d6cb8 3163 if(peer->state == PEER_CMD)
d3372da9 3164 {
5ec60e42 3165 cmdread(peer);
3166 } else if(peer->state == PEER_TRNS) {
3167 transread(peer);
9a2d6cb8 3168 } else if(peer->state == PEER_TTHL) {
3169 handletthl(peer);
d3372da9 3170 }
5ec60e42 3171 return(0);
d3372da9 3172}
3173
5ec60e42 3174static int peererror(struct socket *sk, int err, struct dcpeer *peer)
d3372da9 3175{
5ec60e42 3176 if(peer->state == PEER_TRNS)
3177 transerr(peer);
d3372da9 3178 freedcpeer(peer);
5ec60e42 3179 return(0);
d3372da9 3180}
3181
5ec60e42 3182static int peerconnect(struct socket *sk, int err, struct fnetnode *fn)
d3372da9 3183{
3184 struct dcpeer *peer;
1c4b02cd 3185 struct dchub *hub;
d3372da9 3186
3187 if(err != 0)
3188 {
3189 putfnetnode(fn);
ff625695 3190 putsock(sk);
5ec60e42 3191 return(1);
d3372da9 3192 }
1c4b02cd 3193 hub = fn->data;
d3372da9 3194 peer = newdcpeer(sk);
3195 peer->fn = fn;
3196 peer->accepted = 0;
1c4b02cd 3197 peer->dcppemu = hub->dcppemu;
5ec60e42 3198 CBREG(sk, socket_read, (int (*)(struct socket *, void *))peerread, NULL, peer);
3199 CBREG(sk, socket_err, (int (*)(struct socket *, int, void *))peererror, NULL, peer);
d3372da9 3200 socksettos(sk, confgetint("fnet", "fnptos"));
d3372da9 3201 putsock(sk);
1e9d82b1 3202 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
9a2d6cb8 3203 sendmynick(peer);
3204 sendpeerlock(peer);
5ec60e42 3205 return(1);
d3372da9 3206}
3207
5ec60e42 3208static int peeraccept(struct socket *sk, struct socket *newsk, void *data)
d3372da9 3209{
3210 struct dcpeer *peer;
3211
3212 peer = newdcpeer(newsk);
3213 peer->accepted = 1;
5ec60e42 3214 CBREG(sk, socket_read, (int (*)(struct socket *, void *))peerread, NULL, peer);
3215 CBREG(sk, socket_err, (int (*)(struct socket *, int, void *))peererror, NULL, peer);
d3372da9 3216 socksettos(newsk, confgetint("fnet", "fnptos"));
1e9d82b1 3217 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
5ec60e42 3218 return(0);
d3372da9 3219}
3220
3221static void updatehmlist(void)
3222{
3223 int i, lev, ic, ret;
3224 struct sharecache *node;
3225 char *buf, *buf2, numbuf[32];
3226 size_t bufsize, bufdata;
3227 int fd, ibuf;
3228
3229 bufdata = 0;
3230 buf = smalloc(bufsize = 65536);
3231 node = shareroot->child;
3232 lev = 0;
3233 while(1)
3234 {
3235 ic = 0;
1d85f24b 3236 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 3237 if((buf2 = icwcstombs(node->name, DCCHARSET)) != NULL)
3238 {
3239 for(i = 0; i < lev; i++)
3240 addtobuf(buf, 9);
3241 bufcat(buf, buf2, strlen(buf2));
3242 free(buf2);
3243 if(node->f.b.type == FILE_REG)
3244 {
3245 addtobuf(buf, '|');
3246 sprintf(numbuf, "%i", node->size);
3247 bufcat(buf, numbuf, strlen(numbuf));
3248 }
3249 addtobuf(buf, 13);
3250 addtobuf(buf, 10);
3251 } else {
3252 ic = 1;
3253 }
3254 if((node->child != NULL) && !ic)
3255 {
3256 lev++;
3257 node = node->child;
3258 } else if(node->next != NULL) {
3259 node = node->next;
3260 } else {
3261 while(node->next == NULL)
3262 {
3263 lev--;
3264 node = node->parent;
3265 if(node == shareroot)
3266 break;
3267 }
3268 if(node == shareroot)
3269 break;
3270 node = node->next;
3271 }
3272 }
3273 if(hmlistname != NULL)
3274 {
3275 unlink(hmlistname);
3276 free(hmlistname);
3277 }
3278 hmlistname = sstrdup("/tmp/dc-filelist-hm-XXXXXX");
3279 if((fd = mkstemp(hmlistname)) < 0)
3280 {
3281 flog(LOG_WARNING, "could not create HM file list tempfile: %s", strerror(errno));
3282 free(hmlistname);
3283 hmlistname = NULL;
3284 } else {
3285 /*
3286 * I do not want to implement a good Huffman encoder, and it's not
3287 * like Huffman encoding actually yields any impressive results
3288 * for DC file lists anyway, so I'll just output a bogus
3289 * tree. Implement a good encoder if you want to.
3290 */
3291 write(fd, "HE3\r\0", 5);
3292 write(fd, &bufdata, 4);
3293 ibuf = 256;
3294 write(fd, &ibuf, 2);
3295 ibuf = 8;
3296 for(i = 0; i < 256; i++)
3297 {
3298 write(fd, &i, 1);
3299 write(fd, &ibuf, 1);
3300 }
3301 for(i = 0; i < 256; i++)
3302 write(fd, &i, 1);
3303 for(buf2 = buf; bufdata > 0;)
3304 {
3305 if((ret = write(fd, buf2, bufdata)) < 0)
3306 {
3307 flog(LOG_WARNING, "could not write file list: %s", strerror(errno));
3308 break;
3309 }
3310 bufdata -= ret;
3311 buf2 += ret;
3312 }
3313 close(fd);
3314 }
3315 free(buf);
3316}
3317
3318static struct xmlent
3319{
3320 wchar_t c;
3321 wchar_t *ent;
3322} entities[] = {
3323 {L'&', L"&amp;"},
3324 {L'\"', L"&#34;"},
3325/* {L'\'', L"&quot;"}, Emulate DC++ escaping by omitting this. */
3326 {L'\0', NULL}
3327};
3328
3329static wchar_t *escapexml(wchar_t *src)
3330{
3331 static wchar_t *buf = NULL;;
3332 int ret, c;
3333 wchar_t nbuf[32];
3334 size_t bufsize, bufdata;
3335 struct xmlent *ent;
3336
3337 if(buf != NULL)
3338 free(buf);
3339 buf = NULL;
3340 bufsize = bufdata = 0;
3341 for(; *src != L'\0'; src++)
3342 {
3343 c = wctob(*src);
3344 if((c > 0) && (c < 32))
3345 {
3346 bufcat(buf, L"&#", 2);
3347 ret = swprintf(nbuf, (sizeof(nbuf) / sizeof(*nbuf)), L"%i", c);
3348 bufcat(buf, nbuf, ret);
3349 addtobuf(buf, L';');
3350 } else {
3351 for(ent = entities; ent->ent != NULL; ent++)
3352 {
3353 if(ent->c == *src)
3354 {
3355 bufcat(buf, ent->ent, wcslen(ent->ent));
3356 break;
3357 }
3358 }
3359 if(ent->ent == NULL)
3360 addtobuf(buf, *src);
3361 }
3362 }
3363 addtobuf(buf, L'\0');
3364 return(buf);
3365}
3366
3367static void updatexmllist(void)
3368{
3369 int i, fd, lev;
3370 FILE *fs;
3371 char cidbuf[14], *namebuf;
3372 char *hashbuf;
3373 struct sharecache *node;
3374
3375 if(xmllistname != NULL)
3376 {
3377 unlink(xmllistname);
3378 free(xmllistname);
3379 }
3380 xmllistname = sstrdup("/tmp/dc-filelist-dcxml-XXXXXX");
3381 if((fd = mkstemp(xmllistname)) < 0)
3382 {
3383 flog(LOG_WARNING, "could not create XML file list tempfile: %s", strerror(errno));
3384 free(xmllistname);
3385 xmllistname = NULL;
3386 return;
3387 }
3388 if((fs = fdopen(fd, "w")) == NULL)
3389 {
3390 flog(LOG_WARNING, "could not fdopen XML list fd %i: %s", fd, strerror(errno));
3391 unlink(xmllistname);
3392 free(xmllistname);
3393 xmllistname = NULL;
3394 close(fd);
3395 return;
3396 }
3397 fprintf(fs, "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?>\r\n");
3398 for(i = 0; i < sizeof(cidbuf) - 1; i++)
3399 cidbuf[i] = (rand() % ('Z' - 'A' + 1)) + 'A';
3400 cidbuf[i] = 0;
1c4b02cd 3401 if(confgetint("dc", "dcppemu"))
3402 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"DC++ 0.674\">\r\n", cidbuf);
3403 else
3404 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"%s\">\r\n", cidbuf, "DoldaConnect" VERSION);
d3372da9 3405
3406 node = shareroot->child;
3407 lev = 0;
3408 while(1)
3409 {
3410 if((namebuf = icswcstombs(escapexml(node->name), "UTF-8", NULL)) != NULL)
3411 {
3412 for(i = 0; i < lev; i++)
3413 fputc('\t', fs);
3414 if(node->child != NULL)
3415 {
3416 fprintf(fs, "<Directory Name=\"%s\">\r\n", namebuf);
3417 node = node->child;
3418 lev++;
3419 continue;
3420 } else {
3421 fprintf(fs, "<File Name=\"%s\" Size=\"%i\"", namebuf, node->size);
3422 if(node->f.b.hastth)
3423 {
3424 hashbuf = base32encode(node->hashtth, 24);
3425 fprintf(fs, " TTH=\"%.39s\"", hashbuf);
3426 free(hashbuf);
3427 }
3428 fprintf(fs, "/>\r\n");
3429 }
3430 while(node->next == NULL)
3431 {
3432 node = node->parent;
3433 if(node == shareroot)
3434 {
3435 break;
3436 } else {
3437 lev--;
3438 for(i = 0; i < lev; i++)
3439 fputc('\t', fs);
3440 fprintf(fs, "</Directory>\r\n");
3441 }
3442 }
3443 if(node == shareroot)
3444 break;
3445 node = node->next;
3446 }
3447 }
3448
1c4b02cd 3449 if(confgetint("dc", "dcppemu"))
3450 fprintf(fs, "</FileListing>");
3451 else
3452 fprintf(fs, "</FileListing>\r\n");
d3372da9 3453 fclose(fs);
3454}
3455
3456static void updatexmlbz2list(void)
3457{
3458 int err, fd;
3459 FILE *in;
3460 FILE *real;
3461 BZFILE *out;
3462 char buf[1024];
3463 size_t bufdata;
3464
3465 if(xmllistname == NULL)
3466 return;
3467 if((in = fopen(xmllistname, "r")) == NULL)
3468 {
3469 flog(LOG_WARNING, "could not open XML file list for bzipping: %s", strerror(errno));
3470 return;
3471 }
3472 if(xmlbz2listname != NULL)
3473 {
3474 unlink(xmlbz2listname);
3475 free(xmlbz2listname);
3476 }
3477 xmlbz2listname = sstrdup("/tmp/dc-filelist-dcxmlbz2-XXXXXX");
3478 if((fd = mkstemp(xmlbz2listname)) < 0)
3479 {
3480 flog(LOG_WARNING, "could not create bzipped XML file list tempfile: %s", strerror(errno));
3481 free(xmlbz2listname);
3482 xmlbz2listname = NULL;
3483 fclose(in);
3484 return;
3485 }
3486 if((real = fdopen(fd, "w")) == NULL)
3487 {
3488 flog(LOG_WARNING, "could not fdopen bzipped XML list fd %i: %s", fd, strerror(errno));
3489 close(fd);
3490 unlink(xmlbz2listname);
3491 free(xmlbz2listname);
3492 xmlbz2listname = NULL;
3493 fclose(in);
3494 return;
3495 }
3496 out = BZ2_bzWriteOpen(&err, real, 9, 0, 0);
3497 if(err != BZ_OK)
3498 {
3499 flog(LOG_WARNING, "could not open bzip2 stream from XML list");
3500 fclose(real);
3501 unlink(xmlbz2listname);
3502 free(xmlbz2listname);
3503 xmlbz2listname = NULL;
3504 fclose(in);
3505 return;
3506 }
3507 while(!feof(in))
3508 {
3509 bufdata = fread(buf, 1, sizeof(buf), in);
3510 BZ2_bzWrite(&err, out, buf, bufdata);
3511 }
3512 fclose(in);
3513 BZ2_bzWriteClose(&err, out, 0, NULL, NULL);
3514 fclose(real);
3515}
3516
6305c428 3517static void listtimercb(int cancelled, void *uudata)
3518{
3519 listwritetimer = NULL;
3520 if(!cancelled)
3521 updatelists(1);
3522}
3523
3524static void updatelists(int now)
d3372da9 3525{
000ca725 3526 if((hmlistname == NULL) || (xmllistname == NULL) || (xmlbz2listname == NULL))
3527 now = 1;
6305c428 3528 if(!now)
3529 {
3530 if(listwritetimer == NULL)
3531 listwritetimer = timercallback(ntime() + 300, listtimercb, NULL);
3532 return;
3533 }
3534 if(listwritetimer != NULL)
3535 canceltimer(listwritetimer);
d3372da9 3536 updatehmlist();
3537 updatexmllist();
3538 updatexmlbz2list();
6305c428 3539}
3540
3541static int shareupdate(unsigned long long uusharesize, void *data)
3542{
3543 updatelists(0);
d3372da9 3544 return(0);
3545}
3546
3547static void dispatchcommand(struct qcommand *qcmd, struct command *cmdlist, struct socket *sk, void *data)
3548{
3549 char *p;
3550 struct command *cmd;
3551
3552 if((p = strchr(qcmd->string, ' ')) != NULL)
3553 *(p++) = 0;
3554 for(cmd = cmdlist; cmd->handler != NULL; cmd++)
3555 {
3556 if(!strcmp(cmd->name, qcmd->string))
3557 break;
3558 }
3559 if(cmd->handler != NULL)
3560 cmd->handler(sk, data, qcmd->string, p);
3561/*
3562 else
3563 flog(LOG_DEBUG, "Unimplemented DC command: %s \"%s\"", qcmd->string, p?p:"noargs");
3564*/
3565}
3566
3567static int run(void)
3568{
3569 struct fnetnode *fn, *nextfn;
3570 struct dchub *hub;
3571 struct dcpeer *peer, *nextpeer;
3572 struct qcommand *qcmd;
3573 int ret;
3574
3575 ret = 0;
3576 for(fn = fnetnodes; fn != NULL; fn = nextfn)
3577 {
3578 nextfn = fn->next;
3579 if(fn->fnet != &dcnet)
3580 continue;
3581 if(fn->data == NULL)
3582 continue;
3583 hub = (struct dchub *)fn->data;
3584 if((qcmd = ulqcmd(&hub->queue)) != NULL)
3585 {
3586 if(*qcmd->string == '$')
3587 {
3588 if((fn->sk != NULL) && (fn->sk->state == SOCK_EST))
3589 dispatchcommand(qcmd, hubcmds, fn->sk, fn);
3590 } else if(*qcmd->string != 0) {
3591 hubrecvchat(fn->sk, fn, NULL, qcmd->string);
3592 }
3593 freeqcmd(qcmd);
3594 ret = 1;
3595 break;
3596 }
3597 }
3598 for(peer = peers; peer != NULL; peer = nextpeer)
3599 {
3600 nextpeer = peer->next;
3601 if((qcmd = ulqcmd(&peer->queue)) != NULL)
3602 {
1e9d82b1 3603 if(peer->timeout != NULL)
3604 canceltimer(peer->timeout);
3605 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 3606 if(*qcmd->string == '$')
3607 dispatchcommand(qcmd, peercmds, peer->sk, peer);
3608 freeqcmd(qcmd);
3609 ret = 1;
3610 break;
3611 }
3612 }
3613 return(ret);
3614}
3615
3616static void preinit(int hup)
3617{
3618 if(hup)
3619 return;
3620 regfnet(&dcnet);
3621}
3622
3623static int updateudpport(struct configvar *var, void *uudata)
3624{
3625 struct sockaddr_in addr;
3626 struct socket *newsock;
3627
3628 memset(&addr, 0, sizeof(addr));
3629 addr.sin_family = AF_INET;
3630 addr.sin_port = htons(var->val.num);
3631 if((newsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3632 {
3633 flog(LOG_WARNING, "could not create new DC UDP socket, reverting to old: %s", strerror(errno));
3634 return(0);
3635 }
5ec60e42 3636 CBREG(newsock, socket_read, udpread, NULL, NULL);
d3372da9 3637 if(udpsock != NULL)
3638 putsock(udpsock);
3639 udpsock = newsock;
3640 return(0);
3641}
3642
3643static int updatetcpport(struct configvar *var, void *uudata)
3644{
3645 struct sockaddr_in addr;
3646 struct socket *newsock;
3647
3648 memset(&addr, 0, sizeof(addr));
3649 addr.sin_family = AF_INET;
3650 addr.sin_port = htons(var->val.num);
3651 if((newsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3652 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3653 if(tcpsock != NULL)
3654 putsock(tcpsock);
3655 tcpsock = newsock;
3656 return(0);
3657}
3658
3659static int init(int hup)
3660{
3661 struct sockaddr_in addr;
3662
3663 if(!hup)
3664 {
3665 GCBREG(sharechangecb, shareupdate, NULL);
3666 if(udpsock != NULL)
3667 putsock(udpsock);
3668 if(tcpsock != NULL)
3669 putsock(tcpsock);
3670 addr.sin_family = AF_INET;
3671 memset(&addr.sin_addr, 0, sizeof(addr.sin_addr));
3672 addr.sin_port = htons(confgetint("dc", "udpport"));
3673 if((udpsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3674 {
3675 flog(LOG_CRIT, "could not create DC UDP socket: %s", strerror(errno));
3676 return(1);
3677 }
5ec60e42 3678 CBREG(udpsock, socket_read, udpread, NULL, NULL);
d3372da9 3679 addr.sin_port = htons(confgetint("dc", "tcpport"));
3680 if((tcpsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3681 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3682 CBREG(confgetvar("dc", "udpport"), conf_update, updateudpport, NULL, NULL);
3683 CBREG(confgetvar("dc", "tcpport"), conf_update, updatetcpport, NULL, NULL);
3684 CBREG(confgetvar("net", "mode"), conf_update, updatetcpport, NULL, NULL);
3685 }
3686 return(0);
3687}
3688
3689static void terminate(void)
3690{
3691 if(hmlistname != NULL)
3692 {
3693 unlink(hmlistname);
3694 free(hmlistname);
3695 }
3696 if(xmllistname != NULL)
3697 {
3698 unlink(xmllistname);
3699 free(xmllistname);
3700 }
3701 if(xmlbz2listname != NULL)
3702 {
3703 unlink(xmlbz2listname);
3704 free(xmlbz2listname);
3705 }
3706}
3707
3708static struct configvar myvars[] =
3709{
3710 {CONF_VAR_STRING, "desc", {.str = L""}},
3711 {CONF_VAR_STRING, "speedstring", {.str = L"LAN(T1)"}},
3712 {CONF_VAR_STRING, "email", {.str = L"spam@spam.org"}},
3713 {CONF_VAR_INT, "udpport", {.num = 0}},
3714 {CONF_VAR_INT, "tcpport", {.num = 0}},
1c4b02cd 3715 {CONF_VAR_BOOL, "dcppemu", {.num = 0}},
d3372da9 3716 {CONF_VAR_END}
3717};
3718
3719static struct module me =
3720{
3721 .conf =
3722 {
3723 .vars = myvars
3724 },
3725 .preinit = preinit,
3726 .init = init,
3727 .run = run,
3728 .terminate = terminate,
3729 .name = "dc"
3730};
3731
3732MODULE(me)
Dolda Connect