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Updated spec files for the new library version.
[doldaconnect.git] / daemon / fnet-dc.c
CommitLineData
d3372da9 1/*
2 * Dolda Connect - Modular multiuser Direct Connect-style client
302a2600 3 * Copyright (C) 2004 Fredrik Tolf <fredrik@dolda2000.com>
d3372da9 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>
d3372da9 22#include <unistd.h>
23#include <fcntl.h>
24#include <string.h>
25#include <netinet/in.h>
26#include <arpa/inet.h>
d3372da9 27#include <wctype.h>
28#include <time.h>
29#include <errno.h>
30#include <bzlib.h>
31#include <zlib.h>
32#include <sys/stat.h>
33
34#ifdef HAVE_CONFIG_H
35#include <config.h>
36#endif
37#include "filenet.h"
38#include "log.h"
39#include "module.h"
40#include "utils.h"
41#include "client.h"
42#include "transfer.h"
43#include "sysevents.h"
44#include "net.h"
8b17e919 45#include <tiger.h>
d3372da9 46
47/*
48 * The Direct Connect protocol is extremely ugly. Thus, this code must
49 * also be a bit ugly in certain places. Please forgive me. =/
50 *
51 * This also means that there might be some pieces of the code that
52 * look completely illogical to you, and you think that you may make
53 * them much neater/better. However, in many cases it might just be
54 * that it's required to cope with some oddity of the protocol, such
55 * as the amazingly ugly delayed key response in the peer protocol.
56 */
57
58/* I assume this is the correct character set to use for DC,
59 * considering it was developed without i18n support under Windows */
60#define DCCHARSET "windows-1252"
61
62#ifdef DCPP_MASQUERADE
63/*
64 * I honestly don't want to pretend being a client that I'm not, but
65 * there are so many hubs that simply do not accept any clients
66 * outside their whitelists, for no obvious reasons, so I feel that I
67 * am left with little choice. Anyhow, as long as I actually support
68 * all the features that my faked DC++ version does, there should be
69 * very little harm done.
70 */
71#define DCIDTAG "++"
72#define DCIDTAGV "0.674"
73#define DCIDFULL "DC++ 0.674"
74#else
75#define DCIDTAG "Dolda"
76#define DCIDTAGV VERSION
77#define DCIDFULL "DoldaConnect " VERSION
78#endif
79
80#define PEER_CMD 0
9a2d6cb8 81#define PEER_STOP 1
82#define PEER_TRNS 2
83#define PEER_SYNC 3
84#define PEER_TTHL 4
d3372da9 85
86#define CPRS_NONE 0
87#define CPRS_ZLIB 1
88
89struct command
90{
91 char *name;
92 void (*handler)(struct socket *sk, void *data, char *cmd, char *args);
9a2d6cb8 93 int stop;
d3372da9 94};
95
96struct qcommand
97{
98 struct qcommand *next;
99 char *string;
100};
101
102struct dchub
103{
ffa81d5f 104 struct socket *sk;
d3372da9 105 char *inbuf;
106 size_t inbufdata, inbufsize;
107 struct qcommand *queue;
1c4b02cd 108 int extended, dcppemu;
1d85f24b 109 char *charset;
d3372da9 110 char *nativename;
111 char *nativenick;
08b74f8c 112 char **supports;
d3372da9 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;
dcf7a1a2 130 off_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
cab0b442 163static void peerconnect(struct socket *sk, int err, struct fnetnode *fn);
d3372da9 164static void freedcpeer(struct dcpeer *peer);
cab0b442 165static void transread(struct socket *sk, struct dcpeer *peer);
166static void transerr(struct socket *sk, int err, struct dcpeer *peer);
167static void transwrite(struct socket *sk, struct dcpeer *peer);
d3372da9 168static void updatehmlist(void);
169static void updatexmllist(void);
170static void updatexmlbz2list(void);
9a2d6cb8 171static void requestfile(struct dcpeer *peer);
6305c428 172static void updatelists(int now);
d3372da9 173
174static int reservedchar(unsigned char c)
175{
176 return((c == 0) || (c == 5) || (c == 124) || (c == 96) || (c == 126) || (c == 36));
177}
178
179/* Oh, how I despise having to do this... */
180static char *dcmakekey(char *lock)
181{
182 int i, len, offset;
183 char *buf, *key;
184 char save;
185
186 buf = smalloc(strlen(lock));
187 save = 5;
188 len = 0;
189 for(i = 0; lock[i]; i++)
190 {
191 buf[i] = lock[i] ^ save;
192 buf[i] = ((buf[i] & 0x0F) << 4) | ((buf[i] & 0xF0) >> 4);
193 save = lock[i];
194 if((i != 0) && reservedchar(buf[i]))
195 len += 10;
196 else
197 len++;
198 }
199 buf[0] ^= buf[i - 1];
200 if(reservedchar(buf[0]))
201 len += 10;
202 else
203 len++;
204 key = smalloc(len + 1);
205 offset = 0;
206 for(i = 0; lock[i] != 0; i++)
207 {
208 if(reservedchar(buf[i]))
209 offset += sprintf(key + offset, "/%%DCN%03i%%/", buf[i]);
210 else
211 key[offset++] = buf[i];
212 }
213 key[offset] = 0;
214 free(buf);
215 return(key);
216}
217
9a2d6cb8 218static char *pathnmdc2adc(char *path)
219{
220 char *ret;
221 size_t retsize, retdata;
222
223 if(!strcmp(path, "files.xml") || !strcmp(path, "files.xml.bz2") || !strcmp(path, "MyList.DcLst"))
224 return(sstrdup(path));
225 ret = NULL;
226 retsize = retdata = 0;
227 addtobuf(ret, '/');
228 for(; *path; path++)
229 {
230 if(*path == '\\')
231 addtobuf(ret, '/');
232 else
233 addtobuf(ret, *path);
234 }
235 addtobuf(ret, 0);
236 return(ret);
237}
238
239static int isdchash(struct hash *hash)
240{
241 if(wcscmp(hash->algo, L"TTH"))
242 return(0);
243 if(hash->len != 24)
244 return(0);
245 return(1);
246}
247
08b74f8c
FT		 248/*
249 * Uncomment when used!
250
251static int hubsupports(struct dchub *hub, char *cap)
252{
253 char **p;
254
255 if(hub->supports == NULL)
256 return(0);
257 for(p = hub->supports; *p != NULL; p++)
258 {
259 if(!strcasecmp(*p, cap))
260 return(1);
261 }
262 return(0);
263}
264*/
265
9a2d6cb8 266static int supports(struct dcpeer *peer, char *cap)
267{
268 char **p;
269
270 if(peer->supports == NULL)
271 return(0);
272 for(p = peer->supports; *p != NULL; p++)
273 {
274 if(!strcasecmp(*p, cap))
275 return(1);
276 }
277 return(0);
278}
279
d3372da9 280static void endcompress(struct dcpeer *peer)
281{
282 if(peer->compress == CPRS_ZLIB)
283 {
284 deflateEnd(peer->cprsdata);
285 free(peer->cprsdata);
286 }
287 peer->compress = CPRS_NONE;
288}
289
290static void initcompress(struct dcpeer *peer, int algo)
291{
292 int ret;
293
294 endcompress(peer);
295 peer->compress = algo;
296 if(algo == CPRS_ZLIB)
297 {
298 peer->cprsdata = smalloc(sizeof(z_stream));
299 memset(peer->cprsdata, 0, sizeof(z_stream));
300 if((ret = deflateInit(peer->cprsdata, 3)) != Z_OK)
301 {
302 flog(LOG_CRIT, "Aiya! zlib refuses to init (%i)!", ret);
303 abort();
304 }
305 }
306}
307
308static void unquote(wchar_t *in)
309{
310 wchar_t *p, *p2, nc;
311
312 for(p = in; *p != L'\0'; p++)
313 {
314 if(*p == L'&')
315 {
316 for(p2 = p + 1; (*p2 != L'\0') && (*p2 != L';') && (*p2 != L'&'); p2++);
317 if(*p2 == L'&')
318 continue;
319 if(*p2 == L'\0')
320 return;
321 *p2 = L'\0';
322 nc = L'\0';
323 if(!wcscmp(p + 1, L"amp"))
324 {
325 nc = L'&';
326 } else if(p[1] == L'#') {
327 nc = ucptowc(wcstol(p + 2, NULL, 10));
328 }
329 if(nc == L'\0')
330 {
331 *p2 = L';';
332 p = p2;
333 continue;
334 }
335 *p = nc;
336 memmove(p + 1, p2 + 1, (wcslen(p2 + 1) + 1) * sizeof(wchar_t));
337 }
338 }
339}
340
341static void freeexppeer(struct dcexppeer *ep)
342{
343 if(ep->next != NULL)
344 ep->next->prev = ep->prev;
345 if(ep->prev != NULL)
346 ep->prev->next = ep->next;
347 if(ep == expected)
348 expected = ep->next;
349 free(ep->nick);
350 putfnetnode(ep->fn);
351 if(ep->expire != NULL)
352 canceltimer(ep->expire);
353 free(ep);
354}
355
356static void exppeerexpire(int cancelled, struct dcexppeer *ep)
357{
358 ep->expire = NULL;
359 if(!cancelled)
360 freeexppeer(ep);
361}
362
363static struct dcexppeer *expectpeer(char *nick, struct fnetnode *fn)
364{
365 struct dcexppeer *ep;
366
367 ep = smalloc(sizeof(*ep));
368 ep->nick = sstrdup(nick);
369 getfnetnode(ep->fn = fn);
370 ep->expire = timercallback(ntime() + 300, (void (*)(int, void *))exppeerexpire, ep);
371 ep->next = expected;
372 ep->prev = NULL;
373 if(expected != NULL)
374 expected->prev = ep;
375 expected = ep;
376 return(ep);
377}
378
379static struct qcommand *newqcmd(struct qcommand **queue, char *string)
380{
381 struct qcommand *new;
382
383 while(*queue != NULL)
384 queue = &(*queue)->next;
385 new = smalloc(sizeof(*new));
386 new->string = sstrdup(string);
387 new->next = *queue;
388 *queue = new;
389 return(new);
390}
391
392static struct qcommand *ulqcmd(struct qcommand **queue)
393{
394 struct qcommand *qcmd;
395
396 if((qcmd = *queue) == NULL)
397 return(NULL);
398 *queue = qcmd->next;
399 return(qcmd);
400}
401
402static void freeqcmd(struct qcommand *qcmd)
403{
404 free(qcmd->string);
405 free(qcmd);
406}
407
408static void hubrecvchat(struct socket *sk, struct fnetnode *fn, char *from, char *string)
409{
410 wchar_t *chat, *wfrom, *wpeer;
411 char *p, *end;
412 struct fnetpeer *peer;
1d85f24b 413 struct dchub *hub;
d3372da9 414
1d85f24b 415 hub = fn->data;
d3372da9 416 end = string + strlen(string);
417 while((p = strchr(string, 13)) != NULL)
418 memmove(p, p + 1, (end-- - p));
419 if(from != NULL)
420 {
421 if((strlen(string) > strlen(from) + 2) && (*string == '<') && !memcmp(string + 1, from, strlen(from)) && (*(string + strlen(from) + 1) == '>'))
422 string += strlen(from) + 2;
1d85f24b 423 if((wfrom = icmbstowcs(from, hub->charset)) == NULL)
d3372da9 424 return;
425 wpeer = swcsdup(wfrom);
426 } else {
427 wfrom = NULL;
428 wpeer = NULL;
429 if(*string == '<')
430 {
431 for(p = string + 1; *p; p++)
432 {
433 if((*p == ' ') || (*p == '>'))
434 break;
435 }
436 if(*p == '>')
437 {
438 *(p++) = 0;
439 if(*p == ' ')
440 p++;
1d85f24b 441 if((wpeer = icmbstowcs(string + 1, hub->charset)) == NULL)
d3372da9 442 return;
443 string = p;
444 }
445 }
446 if(wpeer == NULL)
447 wpeer = swcsdup(L"");
448 }
1d85f24b 449 if((chat = icmbstowcs(string, hub->charset)) == NULL)
d3372da9 450 {
451 if(wfrom != NULL)
452 free(wfrom);
453 free(wpeer);
454 return;
455 }
456 unquote(chat);
457 if(wfrom != NULL)
458 {
459 if((peer = fnetfindpeer(fn, wfrom)) == NULL) /* Assume public chat */
460 fnethandlechat(fn, 1, wfrom, wpeer, chat);
461 else
462 fnethandlechat(fn, 0, wfrom, wpeer, chat);
463 } else {
464 fnethandlechat(fn, 1, L"", wpeer, chat);
465 }
466 if(wfrom != NULL)
467 free(wfrom);
468 free(wpeer);
469 free(chat);
470}
471
1e9d82b1 472static void peertimeout(int cancelled, struct dcpeer *peer)
473{
474 peer->timeout = NULL;
475 if(cancelled)
476 return;
477 freedcpeer(peer);
478}
479
d3372da9 480static void sendadc(struct socket *sk, char *arg)
481{
482 char *buf;
483 size_t bufsize, bufdata;
484
485 buf = NULL;
486 bufsize = bufdata = 0;
487 addtobuf(buf, ' ');
488 for(; *arg; arg++)
489 {
490 if(*arg == ' ')
491 {
492 bufcat(buf, "\\s", 2);
493 } else if(*arg == '\n') {
494 bufcat(buf, "\\n", 2);
495 } else if(*arg == '\\') {
496 bufcat(buf, "\\\\", 2);
497 } else {
498 addtobuf(buf, *arg);
499 }
500 }
501 sockqueue(sk, buf, bufdata);
502 free(buf);
503}
504
dcf7a1a2
FT		 505#if defined(__GNUC__)
506static void __attribute__ ((format (printf, 2, 3))) sendadcf(struct socket *sk, char *arg, ...)
507#else
508static void sendadcf(struct socket *sk, char *arg, ...)
509#endif
d3372da9 510{
511 char *buf;
512 va_list args;
513
514 va_start(args, arg);
515 buf = vsprintf2(arg, args);
516 va_end(args);
517 if(buf == NULL)
518 return;
519 sendadc(sk, buf);
520 free(buf);
521}
522
523static char **parseadc(char *args)
524{
525 char **retbuf;
526 size_t retbufsize, retbufdata;
527 char *buf;
528 size_t bufsize, bufdata;
529 int state;
530
531 retbuf = NULL;
532 buf = NULL;
533 retbufsize = retbufdata = bufsize = bufdata = 0;
534 state = 0;
535 while(state != 3)
536 {
537 switch(state)
538 {
539 case 0:
540 if(*args == 0)
541 state = 3;
542 else if(*args != ' ')
543 state = 1;
544 break;
545 case 1:
546 if((*args == ' ') || (*args == 0))
547 {
548 addtobuf(buf, 0);
549 addtobuf(retbuf, buf);
550 buf = NULL;
551 bufsize = bufdata = 0;
552 if(*args == 0)
553 state = 3;
554 } else if(*args == '\\') {
555 state = 2;
556 } else {
557 addtobuf(buf, *args);
558 }
559 args++;
560 break;
561 case 2:
562 if(*args == 0)
563 {
564 if(buf != NULL)
565 free(buf);
566 addtobuf(retbuf, NULL);
567 freeparr(retbuf);
568 return(NULL);
f24d5cfb 569 } else if((*args == 's') || (*args == ' ')) {
d3372da9 570 addtobuf(buf, ' ');
571 } else if(*args == 'n') {
572 addtobuf(buf, '\n');
573 } else if(*args == '\\') {
574 addtobuf(buf, '\\');
575 }
a478552c 576 args++;
d3372da9 577 state = 1;
a478552c 578 break;
d3372da9 579 }
580 }
581 if(buf != NULL)
582 free(buf);
583 addtobuf(retbuf, NULL);
584 return(retbuf);
585}
586
587/* Macros useful in command handlers */
588#define skipspace(s) ({if(((s) = strchr((s), ' ')) == NULL) return; else (s)++;})
589#define qstr(sk, str) sockqueue(sk, str, strlen(str))
590#define qstrf(sk, strandargs...) \
591do { \
592 char *__buf__; \
593 if((__buf__ = sprintf2(strandargs)) != NULL) { \
594 sockqueue(sk, __buf__, strlen(__buf__)); \
595 free(__buf__); \
596 } \
597} while(0)
598
599static char *tr(char *str, char *trans)
600{
601 char *p;
602
603 for(; *trans; trans += 2)
604 {
605 for(p = strchr(str, trans[0]); p != NULL; p = strchr(p, trans[0]))
606 *p = trans[1];
607 }
608 return(str);
609}
610
9a2d6cb8 611static char *getadcid(struct dcpeer *peer)
612{
613 char *buf;
614 char *ret;
d57f938a 615 int isfilelist;
9a2d6cb8 616
2a157d1a 617 isfilelist = 0;
d57f938a 618 if(!wcscmp(peer->transfer->path, L"files.xml") || !wcscmp(peer->transfer->path, L"files.xml.bz2") || !wcscmp(peer->transfer->path, L"MyList.DcLst"))
619 isfilelist = 1;
620 if(!isfilelist && (peer->transfer->hash != NULL) && isdchash(peer->transfer->hash) && supports(peer, "tthf"))
9a2d6cb8 621 {
622 buf = base32encode(peer->transfer->hash->buf, 24);
623 ret = sprintf2("TTH/%.39s", buf);
624 free(buf);
625 } else {
626 if((buf = icwcstombs(peer->transfer->path, "UTF-8")) == NULL)
627 return(NULL);
628 ret = pathnmdc2adc(buf);
629 free(buf);
630 }
631 return(ret);
632}
633
634
d3372da9 635static int trresumecb(struct transfer *transfer, wchar_t *cmd, wchar_t *arg, struct dcpeer *peer)
636{
637 if(!wcscmp(cmd, L"resume"))
638 {
639 if(arg == NULL)
640 {
641 flog(LOG_WARNING, "filter returned no position for \"resume\" on transfer %i", transfer->id);
642 freedcpeer(peer);
643 } else {
644 transfer->curpos = wcstol(arg, NULL, 10);
9a2d6cb8 645 peer->hascurpos = 1;
646 requestfile(peer);
d3372da9 647 }
d3372da9 648 return(1);
649 }
650 return(0);
651}
652
9a2d6cb8 653static void sendmynick(struct dcpeer *peer)
d3372da9 654{
1d85f24b 655 struct fnetnode *fn;
d3372da9 656
1d85f24b 657 fn = peer->fn;
658 if(fn == NULL)
659 qstrf(peer->sk, "$MyNick %s|", icswcstombs(confgetstr("cli", "defnick"), peer->charset, "DoldaConnectUser-IN"));
9a2d6cb8 660 else
1d85f24b 661 qstrf(peer->sk, "$MyNick %s|", icswcstombs(fn->mynick, peer->charset, "DoldaConnectUser-IN"));
9a2d6cb8 662}
663
664static void sendpeerlock(struct dcpeer *peer)
665{
1c4b02cd 666 if(peer->dcppemu)
667 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DCPLUSPLUS0.674ABCABC|");
668 else
669 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DOLDA%sABCABCABC|", VERSION);
9a2d6cb8 670}
671
672static void sendsupports(struct dcpeer *peer)
673{
4b544330 674 if(peer->dcppemu) {
1c4b02cd 675 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG |");
4b544330
FT		 676 } else {
677 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF");
678 if(!confgetint("dc", "hidedeflate"))
679 qstr(peer->sk, " GetZBlock ZLIG");
680 qstr(peer->sk, "|");
681 }
9a2d6cb8 682}
683
684static void requestfile(struct dcpeer *peer)
685{
686 char *buf;
687
688 if(peer->transfer->size == -1)
d3372da9 689 {
1d85f24b 690 /* Use DCCHARSET for $Get paths until further researched... */
9a2d6cb8 691 if((buf = icswcstombs(peer->transfer->path, DCCHARSET, NULL)) == NULL)
d3372da9 692 {
9a2d6cb8 693 transferseterror(peer->transfer, TRNSE_NOTFOUND);
694 freedcpeer(peer);
d3372da9 695 return;
696 }
9a2d6cb8 697 /* The transfer will be restarted later from
698 * cmd_filelength when it detects that the sizes
699 * don't match. */
700 qstrf(peer->sk, "$Get %s$1|", buf);
701 return;
d3372da9 702 }
9a2d6cb8 703 if((peer->transfer->hash == NULL) && !peer->notthl)
d3372da9 704 {
9a2d6cb8 705 if(supports(peer, "adcget") && supports(peer, "tthl"))
d3372da9 706 {
9a2d6cb8 707 qstr(peer->sk, "$ADCGET");
708 sendadc(peer->sk, "tthl");
709 if((buf = getadcid(peer)) == NULL)
d3372da9 710 {
9a2d6cb8 711 transferseterror(peer->transfer, TRNSE_NOTFOUND);
d3372da9 712 freedcpeer(peer);
713 return;
714 }
9a2d6cb8 715 sendadc(peer->sk, buf);
716 free(buf);
717 sendadc(peer->sk, "0");
718 sendadc(peer->sk, "-1");
719 qstr(peer->sk, "|");
df873cd0 720 peer->fetchingtthl = 1;
9a2d6cb8 721 return;
722 }
723 }
724 if(!peer->hascurpos)
725 {
726 if(forkfilter(peer->transfer))
727 {
728 flog(LOG_WARNING, "could not fork filter for transfer %i: %s", peer->transfer->id, strerror(errno));
729 freedcpeer(peer);
730 return;
d3372da9 731 }
9a2d6cb8 732 CBREG(peer->transfer, trans_filterout, (int (*)(struct transfer *, wchar_t *, wchar_t *, void *))trresumecb, NULL, peer);
733 return;
734 }
735 if(supports(peer, "adcget"))
736 {
737 qstr(peer->sk, "$ADCGET");
738 sendadc(peer->sk, "file");
739 if((buf = getadcid(peer)) == NULL)
740 {
741 transferseterror(peer->transfer, TRNSE_NOTFOUND);
742 freedcpeer(peer);
743 return;
744 }
745 sendadc(peer->sk, buf);
746 free(buf);
dcf7a1a2
FT		 747 sendadcf(peer->sk, "%ji", (intmax_t)peer->transfer->curpos);
748 sendadcf(peer->sk, "%ji", (intmax_t)(peer->transfer->size - peer->transfer->curpos));
9a2d6cb8 749 qstr(peer->sk, "|");
750 } else if(supports(peer, "xmlbzlist")) {
751 if((buf = icswcstombs(peer->transfer->path, "UTF-8", NULL)) == NULL)
752 {
753 transferseterror(peer->transfer, TRNSE_NOTFOUND);
754 freedcpeer(peer);
755 return;
756 }
dcf7a1a2 757 qstrf(peer->sk, "$UGetBlock %ji %ji %s|", (intmax_t)peer->transfer->curpos, (intmax_t)(peer->transfer->size - peer->transfer->curpos), buf);
d3372da9 758 } else {
1d85f24b 759 /* Use DCCHARSET for $Get paths until further researched... */
9a2d6cb8 760 if((buf = icswcstombs(peer->transfer->path, DCCHARSET, NULL)) == NULL)
d3372da9 761 {
9a2d6cb8 762 transferseterror(peer->transfer, TRNSE_NOTFOUND);
763 freedcpeer(peer);
764 return;
d3372da9 765 }
dcf7a1a2 766 qstrf(peer->sk, "$Get %s$%ji|", buf, (intmax_t)peer->transfer->curpos + 1);
d3372da9 767 }
768}
769
770static void sendmyinfo(struct socket *sk, struct fnetnode *fn)
771{
772 struct dchub *hub;
773 char *buf;
774 struct fnetnode *cfn;
69757b8c 775 int hn1, hn2, hn3;
d3372da9 776
777 hub = fn->data;
778 qstrf(sk, "$MyINFO $ALL %s ", hub->nativenick);
1d85f24b 779 buf = tr(icswcstombs(confgetstr("dc", "desc"), hub->charset, "Charset_conv_failure"), "$_|_");
d3372da9 780 qstrf(sk, "%s", buf);
69757b8c 781 hn1 = hn2 = hn3 = 0;
d3372da9 782 for(cfn = fnetnodes; cfn != NULL; cfn = cfn->next)
783 {
784 if((cfn->state == FNN_EST) || (cfn->state == FNN_HS))
69757b8c 785 {
786 if(cfn->regstatus == FNNS_OP)
787 hn3++;
788 else if(cfn->regstatus == FNNS_REG)
789 hn2++;
790 else
791 hn1++;
792 }
d3372da9 793 }
69757b8c 794 qstrf(sk, "<%s V:%s,M:%c,H:%i/%i/%i,S:%i>",
1c4b02cd 795 (hub->dcppemu)?"++":"Dolda",
796 (hub->dcppemu)?"0.674":VERSION,
d3372da9 797 (tcpsock == NULL)?'P':'A',
69757b8c 798 hn1, hn2, hn3,
d3372da9 799 confgetint("transfer", "slots")
800 );
801 qstrf(sk, "$ $");
1d85f24b 802 buf = tr(icswcstombs(confgetstr("dc", "speedstring"), hub->charset, "Charset_conv_failure"), "$_|_");
d3372da9 803 qstrf(sk, "%s\x01$", buf);
1d85f24b 804 buf = tr(icswcstombs(confgetstr("dc", "email"), hub->charset, "Charset_conv_failure"), "$_|_");
d3372da9 805 qstrf(sk, "%s$", buf);
806 qstrf(sk, "%llu$|", sharesize);
807}
808
809static void hubhandleaction(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
810{
811 struct dchub *hub;
812
813 hub = fn->data;
814 if(!strcmp(cmd, "$Lock"))
815 {
816 qstrf(sk, "$ValidateNick %s|", hub->nativenick);
817 } else if(!strcmp(cmd, "$Hello")) {
818 if(fn->state == FNN_HS)
819 {
820 qstrf(sk, "$Version 1,0091|");
821 qstrf(sk, "$GetNickList|");
822 sendmyinfo(sk, fn);
823 fnetsetstate(fn, FNN_EST);
824 } else {
825 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
826 }
827 }
828}
829
830static void cmd_lock(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
831{
832 struct dchub *hub;
833 char *key;
834 char *p;
835
836 hub = fn->data;
837 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
838 hub->extended = 1;
839 if((p = strchr(args, ' ')) != NULL)
840 *(p++) = 0;
841 if(hub->extended)
842 {
4b544330 843 if(hub->dcppemu) {
1c4b02cd 844 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock |");
4b544330
FT		 845 } else {
846 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch");
847 if(!confgetint("dc", "hidedeflate"))
848 qstr(sk, " GetZBlock");
849 qstr(sk, "|");
850 }
d3372da9 851 }
852 key = dcmakekey(args);
853 qstrf(sk, "$Key %s|", key);
854 free(key);
855 hubhandleaction(sk, fn, cmd, args);
856}
857
858static void cmd_hubname(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
859{
860 wchar_t *buf;
861 struct dchub *hub;
862
863 hub = fn->data;
864 if(hub->nativename == NULL)
865 free(hub->nativename);
866 hub->nativename = sstrdup(args);
1d85f24b 867 buf = icmbstowcs(args, hub->charset);
d3372da9 868 fnetsetname(fn, (buf == NULL)?L"Hubname conv error":buf);
869 if(buf != NULL)
870 free(buf);
871 hubhandleaction(sk, fn, cmd, args);
872}
873
874static void cmd_hello(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
875{
876 wchar_t *nick;
877 struct dchub *hub;
878
879 hub = fn->data;
1d85f24b 880 if((nick = icmbstowcs(args, hub->charset)) == NULL)
d3372da9 881 return;
882 if(strcmp(args, hub->nativenick) && (fnetfindpeer(fn, nick) == NULL))
883 fnetaddpeer(fn, nick, nick);
884 free(nick);
885 hubhandleaction(sk, fn, cmd, args);
886}
887
888static void cmd_quit(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
889{
890 wchar_t *nick;
891 struct fnetpeer *peer;
892 struct dchub *hub;
893
894 hub = fn->data;
1d85f24b 895 if((nick = icmbstowcs(args, hub->charset)) == NULL)
d3372da9 896 return;
897 if((peer = fnetfindpeer(fn, nick)) != NULL)
898 fnetdelpeer(peer);
899 free(nick);
900 hubhandleaction(sk, fn, cmd, args);
901}
902
903static void cmd_nicklist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
904{
905 struct dchub *hub;
906 char *p;
907 wchar_t *buf;
908 struct fnetpeer *peer, *npeer;
909
910 hub = fn->data;
911 for(peer = fn->peers; peer != NULL; peer = peer->next)
912 peer->flags.b.delete = 1;
913 while((p = strstr(args, "$$")) != NULL)
914 {
915 *p = 0;
1d85f24b 916 if((buf = icmbstowcs(args, hub->charset)) != NULL)
d3372da9 917 {
918 if((peer = fnetfindpeer(fn, buf)) == NULL)
919 peer = fnetaddpeer(fn, buf, buf);
920 else
921 peer->flags.b.delete = 0;
922 free(buf);
923 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
924 }
925 args = p + 2;
926 }
927 for(peer = fn->peers; peer != NULL; peer = npeer)
928 {
929 npeer = peer->next;
930 if(peer->flags.b.delete)
931 fnetdelpeer(peer);
932 }
933 hubhandleaction(sk, fn, cmd, args);
934}
935
936static void cmd_oplist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
937{
938 struct dchub *hub;
939 char *p;
940 wchar_t *buf;
941 struct fnetpeer *peer;
942
943 hub = fn->data;
944 for(peer = fn->peers; peer != NULL; peer = peer->next)
945 peer->flags.b.op = 0;
946 while((p = strstr(args, "$$")) != NULL)
947 {
948 *p = 0;
1d85f24b 949 if((buf = icmbstowcs(args, hub->charset)) != NULL)
d3372da9 950 {
951 if((peer = fnetfindpeer(fn, buf)) != NULL)
952 peer->flags.b.op = 1;
953 free(buf);
954 }
955 args = p + 2;
956 }
957 hubhandleaction(sk, fn, cmd, args);
958}
959
960static void cmd_myinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
961{
962 char *p, *p2;
963 wchar_t *buf, *wp, *wp2;
964 wchar_t abuf[10];
965 struct fnetpeer *peer;
966 struct dchub *hub;
967
968 hub = fn->data;
969 p = args;
970 if(strncmp(p, "$ALL ", 5))
971 return;
972 p += 5;
973 if((p2 = strchr(p, ' ')) == NULL)
974 return;
975 *p2 = 0;
1d85f24b 976 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 977 return;
978 if((peer = fnetfindpeer(fn, buf)) == NULL)
979 peer = fnetaddpeer(fn, buf, buf);
980 free(buf);
981 p = p2 + 1;
982 if((p2 = strstr(p, "$ $")) == NULL)
983 return;
984 *p2 = 0;
1d85f24b 985 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 986 return;
316e9a13 987 if((wcslen(buf) > 0) && (buf[wcslen(buf) - 1] == L'>') && ((wp = wcsrchr(buf, L'<')) != NULL))
d3372da9 988 {
989 buf[wcslen(buf) - 1] = L'\0';
990 *(wp++) = L'\0';
991 if((wp2 = wcschr(wp, L' ')) != NULL)
992 {
993 *(wp2++) = L'\0';
994 fnetpeersetstr(peer, L"dc-client", wp);
995 wp = wp2;
996 do
997 {
998 if((wp2 = wcschr(wp, L',')) != NULL)
999 *(wp2++) = L'\0';
1000 if(wp[1] != L':')
1001 continue;
1002 swprintf(abuf, 10, L"dc-tag-%lc", wp[0]);
1003 fnetpeersetstr(peer, abuf, wp + 2);
1004 wp = wp2;
1005 } while(wp2 != NULL);
1006 }
1007 }
1008 fnetpeersetstr(peer, L"descr", buf);
1009 free(buf);
1010 p = p2 + 3;
1011 if((p2 = strchr(p, '$')) == NULL)
1012 return;
1013 *(p2 - 1) = 0;
1d85f24b 1014 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 1015 return;
1016 fnetpeersetstr(peer, L"dc-speed", buf);
1017 free(buf);
1018 p = p2 + 1;
1019 if((p2 = strchr(p, '$')) == NULL)
1020 return;
1021 *p2 = 0;
1d85f24b 1022 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 1023 return;
1024 fnetpeersetstr(peer, L"email", buf);
1025 free(buf);
1026 p = p2 + 1;
1027 if(strlen(p) < 1)
1028 return;
1029 fnetpeersetlnum(peer, L"share", strtoll(p, NULL, 10));
1030 hubhandleaction(sk, fn, cmd, args);
1031}
1032
1033/* I do not implement the fully in that I do not disconnect from the
1034 * old hub. I do this since I believe that if the hub owner really
1035 * wants to get rid of us, then it is his responsibility to disconnect
1036 * us. */
1037static void cmd_forcemove(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1038{
1039 struct dchub *hub;
1040 struct fnetnode *newfn;
1041 int freeargs;
1042
1043 hub = fn->data;
1044 if(strchr(args, ':') == NULL)
1045 {
1046 args = strcpy(smalloc(strlen(args) + 5), args);
1047 strcat(args, ":411");
1048 freeargs = 1;
1049 } else {
1050 freeargs = 0;
1051 }
a3a4a3a7 1052 if((newfn = fnetinitconnect(L"dc", fn->owner, args, NULL)) != NULL)
d3372da9 1053 {
1054 linkfnetnode(newfn);
1055 putfnetnode(newfn);
1056 }
1057 hubhandleaction(sk, fn, cmd, args);
1058 if(freeargs)
1059 free(args);
1060}
1061
1d85f24b 1062static char *getdcpath(struct sharecache *node, size_t *retlen, char *charset)
d3372da9 1063{
1064 char *buf, *buf2;
1065 size_t len, len2;
1066
1067 if(node->parent == NULL)
1068 return(NULL);
1069 if(node->parent == shareroot)
1070 {
1d85f24b 1071 if((buf = icwcstombs(node->name, charset)) == NULL)
d3372da9 1072 return(NULL);
1073 if(retlen != NULL)
1074 *retlen = strlen(buf);
1075 return(buf);
1076 } else {
1d85f24b 1077 if((buf2 = icwcstombs(node->name, charset)) == NULL)
d3372da9 1078 return(NULL);
1d85f24b 1079 if((buf = getdcpath(node->parent, &len, charset)) == NULL)
d3372da9 1080 {
1081 free(buf2);
1082 return(NULL);
1083 }
1084 len2 = strlen(buf2);
1085 buf = srealloc(buf, len + 1 + len2 + 1);
1086 buf[len++] = '\\';
1087 strcpy(buf + len, buf2);
1088 buf[len + len2] = 0;
1089 free(buf2);
1090 if(retlen != NULL)
1091 *retlen = len + len2;
1092 return(buf);
1093 }
1094}
1095
1096/*
1097 * This is the main share searching function for Direct Connect
1098 * peers. Feel free to optimize it if you feel the need for it. I
1099 * haven't ever seen it take any noticable CPU time anyway, so I
1100 * haven't felt that need.
1101 *
1102 * It may feel dubious to just return the directory when all terms are
1103 * satisfied rather than all the files in it, but it really benefits
1104 * everyone: Less cycles used for us, less UDP squelching for active
1105 * searchers, and less bandwidth waste for hubs when serving passive
1106 * searchers.
1107 */
1108static void cmd_search(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1109{
1110 int i, done;
1111 struct dchub *hub;
1112 char *p, *p2;
1113 char *prefix, *infix, *postfix, *buf, *buf2;
1114 struct socket *dsk;
1115 struct sockaddr_in addr;
1116 struct sharecache *node;
1117 int minsize, maxsize;
c7185019 1118 int dotth;
1119 size_t buflen;
d3372da9 1120 int termnum, satisfied, skipcheck;
1121 int level, tersat[32];
1122 wchar_t *terms[32];
1123 char hashtth[24];
1124
1125 hub = fn->data;
1126 if((p = strchr(args, ' ')) == NULL)
1127 return;
1128 *(p++) = 0;
1129
1130 memset(terms, 0, sizeof(terms));
1131 prefix = infix = postfix = NULL;
1132 dsk = NULL;
1133 dotth = 0;
1134
1135 if(!strncmp(args, "Hub:", 4))
1136 {
1137 if(!strcmp(cmd, "$MultiSearch"))
1138 goto out;
1139 if(!strcmp(args + 4, hub->nativenick))
1140 goto out;
1141 prefix = sprintf2("$SR %s ", hub->nativenick);
1142 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
ffa81d5f 1143 postfix = sprintf2(" (%s)\005%s|", formataddress(hub->sk->remote, hub->sk->remotelen), args + 4);
d3372da9 1144 dsk = sk;
1145 getsock(dsk);
1146 } else {
1147 if((p2 = strchr(args, ':')) == NULL)
1148 goto out;
1149 *(p2++) = 0;
1150 addr.sin_family = AF_INET;
1151 if(!inet_aton(args, &addr.sin_addr))
1152 goto out;
1153 addr.sin_port = htons(atoi(p2));
1154 prefix = sprintf2("$SR %s ", hub->nativenick);
1155 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
ffa81d5f 1156 postfix = sprintf2(" (%s)|", formataddress(hub->sk->remote, hub->sk->remotelen));
d3372da9 1157 netdgramconn(dsk = netdupsock(udpsock), (struct sockaddr *)&addr, sizeof(addr));
1158 }
1159
1160 minsize = maxsize = -1;
1161 if(*p == 0)
1162 goto out;
1163 if(*(p++) == 'T')
1164 minsize = 0;
1165 if(*(p++) != '?')
1166 goto out;
1167 if(*p == 0)
1168 goto out;
9d8cf743 1169 if((*(p++) == 'T') && (minsize == 0))
d3372da9 1170 {
1171 maxsize = 0;
1172 minsize = -1;
1173 }
1174 if(*(p++) != '?')
1175 goto out;
1176 if((p2 = strchr(p, '?')) == NULL)
1177 goto out;
1178 *(p2++) = 0;
1179 if(minsize == 0)
1180 minsize = atoi(p);
1181 if(maxsize == 0)
1182 maxsize = atoi(p);
1183 p = p2 + 1;
1184 if(*(p++) != '?')
1185 goto out;
1186 termnum = 0;
1187 p2 = p;
1188 done = 0;
1189 while(!done)
1190 {
1191 if((*p2 == 0) || (*p2 == '$'))
1192 {
1193 if(*p2 == 0)
1194 done = 1;
1195 else
1196 *p2 = 0;
1197 if(*p)
1198 {
1199 if(!dotth && !strncmp(p, "TTH:", 4))
1200 {
1201 dotth = 1;
2dd01e6e 1202 if(((buf = base32decode(p + 4, &buflen)) == NULL) || (buflen != 24))
1203 {
1204 free(buf);
d3372da9 1205 goto out;
2dd01e6e 1206 }
d3372da9 1207 memcpy(hashtth, buf, 24);
1208 free(buf);
1209 } else {
1d85f24b 1210 if((terms[termnum] = icmbstowcs(p, hub->charset)) != NULL)
d3372da9 1211 termnum++;
1212 }
1213 }
1214 p = p2 + 1;
1215 if(termnum == 32)
1216 break;
1217 }
1218 p2++;
1219 }
1220
1221 node = shareroot->child;
1222 level = 0;
1223 for(i = 0; i < termnum; i++)
1224 tersat[i] = -1;
1225 satisfied = 0;
1226 while(1)
1227 {
1228 skipcheck = 0;
1229 if(node->f.b.type == FILE_REG)
1230 {
1231 if((minsize >= 0) && (node->size < minsize))
1232 skipcheck = 1;
1233 if((maxsize >= 0) && (node->size > maxsize))
1234 skipcheck = 1;
1235 }
1236 if(!skipcheck && dotth)
1237 {
1238 if((node->f.b.type != FILE_REG) || (node->f.b.hastth && memcmp(hashtth, node->hashtth, 24)))
1239 skipcheck = 1;
1240 }
1241 if(!skipcheck)
1242 {
1243 for(i = 0; i < termnum; i++)
1244 {
1245 if(tersat[i] >= 0)
1246 continue;
1247 if(wcsexists(node->name, terms[i]))
1248 {
1249 tersat[i] = level;
1250 satisfied++;
1251 } else if(node->child == NULL) {
1252 break;
1253 }
1254 }
1255 }
1256 if(!skipcheck && (satisfied == termnum))
1257 {
1d85f24b 1258 /* Use DCCHARSET in $Get paths until further researched... */
1259 if((buf = getdcpath(node, NULL, DCCHARSET)) != NULL)
d3372da9 1260 {
1261 if(node->f.b.hastth)
1262 {
1263 buf2 = base32encode(node->hashtth, 24);
dcf7a1a2 1264 qstrf(dsk, "%s%s\005%ji%sTTH:%.39s%s", prefix, buf, (intmax_t)node->size, infix, buf2, postfix);
d3372da9 1265 free(buf2);
1266 } else {
dcf7a1a2 1267 qstrf(dsk, "%s%s\005%ji%s%s%s", prefix, buf, (intmax_t)node->size, infix, hub->nativename, postfix);
d3372da9 1268 }
1269 free(buf);
1270 }
1271 }
1272 if((!skipcheck && (satisfied == termnum)) || (node->child == NULL))
1273 {
1274 while(node->next == NULL)
1275 {
1276 if((node = node->parent) == shareroot)
1277 break;
1278 level--;
1279 }
1280 if(node == shareroot)
1281 break;
1282 for(i = 0; i < termnum; i++)
1283 {
1284 if(tersat[i] >= level)
1285 {
1286 tersat[i] = -1;
1287 satisfied--;
1288 }
1289 }
1290 node = node->next;
1291 } else {
1292 node = node->child;
1293 level++;
1294 }
1295 }
1296
1297 hubhandleaction(sk, fn, cmd, args);
1298
1299 out:
1300 if(dsk != NULL)
1301 putsock(dsk);
1302 if(prefix != NULL)
1303 free(prefix);
1304 if(infix != NULL)
1305 free(infix);
1306 if(postfix != NULL)
1307 free(postfix);
1308 for(i = 0; (i < 32) && (terms[i] != NULL); i++)
1309 free(terms[i]);
1310}
1311
1312static void cmd_connecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1313{
1314 char *p;
1315 struct dchub *hub;
1316 struct socket *newsk;
1317 struct sockaddr_in addr;
1318
1319 hub = fn->data;
1320 if((p = strchr(args, ' ')) == NULL)
1321 return;
1322 *(p++) = 0;
1323 if(strcmp(args, hub->nativenick))
1324 return;
1325 addr.sin_family = AF_INET;
1326 args = p;
1327 if((p = strchr(args, ':')) == NULL)
1328 return;
1329 *(p++) = 0;
1330 addr.sin_port = htons(atoi(p));
1331 if(!inet_aton(args, &addr.sin_addr))
1332 return;
cab0b442 1333 newsk = netcsconn((struct sockaddr *)&addr, sizeof(addr), (void (*)(struct socket *, int, void *))peerconnect, fn);
d3372da9 1334 getfnetnode(fn);
1335 hubhandleaction(sk, fn, cmd, args);
1336}
1337
1338static void sendctm(struct socket *sk, char *nick)
1339{
1340 struct sockaddr *addr;
1341 socklen_t addrlen;
1342
1343 if(tcpsock == NULL)
1344 return;
9b5acc18 1345 if(sockgetremotename2(tcpsock, sk, &addr, &addrlen) < 0)
d3372da9 1346 return;
1347 if(addr->sa_family == AF_INET)
1348 qstrf(sk, "$ConnectToMe %s %s|", nick, formataddress(addr, addrlen));
1349 else
1350 flog(LOG_WARNING, "Direct Connect TCP socket is suddenly not AF_INET, but %i", addr->sa_family);
1351 free(addr);
1352}
1353
1354static void cmd_revconnecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1355{
1356 struct dchub *hub;
1357 char *p;
1358
1359 hub = fn->data;
1360 if((p = strchr(args, ' ')) == NULL)
1361 return;
1362 *(p++) = 0;
1363 if(strcmp(p, hub->nativenick))
1364 return;
1365 sendctm(sk, args);
1366 expectpeer(args, fn);
1367 hubhandleaction(sk, fn, cmd, args);
1368}
1369
1370static void cmd_getnetinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1371{
1372 struct dchub *hub;
1373 struct fnetnode *node;
1374 int numhubs;
1375
1376 hub = fn->data;
1377 numhubs = 0;
1378 for(node = fnetnodes; node != NULL; node = node->next)
1379 {
1380 if(node->state == FNN_EST)
1381 numhubs++;
1382 }
1383 qstrf(sk, "$NetInfo %i$%i$%c$0|", confgetint("transfer", "slots"), numhubs, (tcpsock == NULL)?'P':'A');
1384 hubhandleaction(sk, fn, cmd, args);
1385}
1386
1387static void cmd_to(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1388{
1389 struct dchub *hub;
1390 char *p, *p2;
1391
1392 hub = fn->data;
1393 p = args;
1394 if((p2 = strchr(p, ' ')) == NULL)
1395 return;
1396 *(p2++) = 0;
1397 p = p2;
1398 if((p2 = strchr(p, ' ')) == NULL)
1399 return;
1400 *(p2++) = 0;
1401 if(strcmp(p, "From:"))
1402 return;
1403 p = p2;
1404 if((p2 = strstr(p, " $")) == NULL)
1405 return;
1406 *p2 = 0;
1407 p2 += 2;
ffa81d5f 1408 hubrecvchat(hub->sk, fn, p, p2);
d3372da9 1409 hubhandleaction(sk, fn, cmd, args);
1410}
1411
1412static void cmd_sr(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1413{
1414 struct dchub *hub;
d86b7a9f 1415 char *p, *p2, *buf;
d3372da9 1416 char *nick, *filename, *hubname;
dcf7a1a2
FT		 1417 off_t size;
1418 int slots;
d86b7a9f 1419 size_t buflen;
d3372da9 1420 struct srchres *sr;
1421 wchar_t *wnick, *wfile;
1422
1423 hub = fn->data;
1424 nick = p = args;
1425 if((p2 = strchr(p, ' ')) == NULL)
1426 return;
1427 *p2 = 0;
1428 p = p2 + 1;
1429 filename = p;
1430 if((p2 = strchr(p, 5)) == NULL)
1431 return;
1432 *p2 = 0;
1433 p = p2 + 1;
1434 if((p2 = strchr(p, ' ')) == NULL)
1435 return;
1436 *p2 = 0;
dcf7a1a2 1437 size = strtoll(p, NULL, 10);
d3372da9 1438 p = p2 + 1;
1439 if((p2 = strchr(p, '/')) == NULL)
1440 return;
1441 *p2 = 0;
1442 slots = atoi(p);
1443 p = p2 + 1;
1444 if((p2 = strchr(p, 5)) == NULL)
1445 return;
1446 p = p2 + 1;
1447 hubname = p;
1448 if((p2 = strstr(p, " (")) == NULL)
1449 return;
1450 *p2 = 0;
1d85f24b 1451 if((wnick = icmbstowcs(nick, hub->charset)) == NULL)
d3372da9 1452 return;
1d85f24b 1453 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 1454 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
1455 {
1456 free(wnick);
1457 return;
1458 }
1459 sr = newsrchres(&dcnet, wfile, wnick);
1460 if(sr->peernick != NULL)
1461 free(sr->peernick);
1462 sr->peernick = swcsdup(wnick);
1463 sr->size = size;
1464 sr->slots = slots;
1465 free(wfile);
1466 free(wnick);
d86b7a9f 1467 if(!strncmp(hubname, "TTH:", 4))
1468 {
1469 if((buf = base32decode(hubname + 4, &buflen)) != NULL)
1470 {
1471 if(buflen == 24)
1472 sr->hash = newhash(L"TTH", 24, buf);
1473 free(buf);
1474 }
1475 }
d3372da9 1476 getfnetnode(sr->fn = fn);
1477 submitsrchres(sr);
1478 freesrchres(sr);
1479 hubhandleaction(sk, fn, cmd, args);
1480}
1481
1482static void cmd_usercommand(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1483{
1484 /* Do nothing for now. */
1485}
1486
48509089 1487static void cmd_getpass(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1488{
1489 struct dchub *hub;
1c4b02cd 1490 wchar_t *pw;
48509089 1491 char *mbspw;
1492
1493 hub = fn->data;
1c4b02cd 1494 pw = wpfind(fn->args, L"password");
1d85f24b 1495 if((pw == NULL) || ((mbspw = icwcstombs(pw, hub->charset)) == NULL))
48509089 1496 {
1497 killfnetnode(fn);
1498 return;
1499 }
1500 qstrf(sk, "$MyPass %s|", mbspw);
1501 free(mbspw);
fcd0627b 1502 fn->regstatus = FNNS_REG;
48509089 1503 hubhandleaction(sk, fn, cmd, args);
1504}
1505
c9b3ad74 1506static void cmd_logedin(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1507{
1508 struct dchub *hub;
1509
1510 hub = fn->data;
fcd0627b 1511 fn->regstatus = FNNS_OP;
c9b3ad74 1512 hubhandleaction(sk, fn, cmd, args);
1513}
1514
08b74f8c
FT		 1515static void cmd_hubsupports(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1516{
1517 struct dchub *hub;
1518 int i;
1519 char *p, *p2;
1520 char **arr;
1521 size_t arrsize, arrdata;
1522
1523 hub = fn->data;
1524 if(hub->supports != NULL)
1525 {
1526 for(i = 0; hub->supports[i] != NULL; i++)
1527 free(hub->supports[i]);
1528 free(hub->supports);
1529 }
1530 arr = NULL;
1531 arrsize = arrdata = 0;
1532 p = args;
1533 do
1534 {
1535 if((p2 = strchr(p, ' ')) != NULL)
1536 *(p2++) = 0;
1537 if(*p == 0)
1538 continue;
1539 addtobuf(arr, sstrdup(p));
1540 } while((p = p2) != NULL);
1541 addtobuf(arr, NULL);
1542 hub->supports = arr;
1543}
1544
d3372da9 1545static void cmd_mynick(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1546{
9a2d6cb8 1547 struct dcexppeer *expect;
1c4b02cd 1548 struct dchub *hub;
9a2d6cb8 1549
d3372da9 1550 if(peer->nativename != NULL)
1551 free(peer->nativename);
1552 peer->nativename = sstrdup(args);
1553 if(peer->wcsname != NULL)
1554 free(peer->wcsname);
1d85f24b 1555 if((peer->wcsname = icmbstowcs(peer->nativename, peer->charset)) == NULL)
d3372da9 1556 {
1557 freedcpeer(peer);
1558 return;
1559 }
9a2d6cb8 1560 if(peer->accepted)
1561 {
1562 for(expect = expected; expect != NULL; expect = expect->next)
1563 {
1564 if(!strcmp(expect->nick, args))
1565 break;
1566 }
1567 if(expect == NULL)
1568 {
1569 peer->fn = NULL;
1570 } else {
1c4b02cd 1571 hub = expect->fn->data;
9a2d6cb8 1572 peer->fn = expect->fn;
1573 getfnetnode(peer->fn);
1c4b02cd 1574 peer->dcppemu = hub->dcppemu;
9a2d6cb8 1575 freeexppeer(expect);
1576 }
1577 }
d3372da9 1578}
1579
1580static void cmd_direction(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1581{
1582 char *p;
9a2d6cb8 1583 int mydir;
1584 struct transfer *transfer;
d3372da9 1585
1586 if((p = strchr(args, ' ')) == NULL)
1587 return;
1588 *p = 0;
1589 if(!strcmp(args, "Upload"))
9a2d6cb8 1590 mydir = TRNSD_DOWN;
d3372da9 1591 if(!strcmp(args, "Download"))
9a2d6cb8 1592 mydir = TRNSD_UP;
1593 if(peer->accepted)
1594 {
1595 if((peer->transfer == NULL) || (mydir != peer->direction))
1596 {
1597 freedcpeer(peer);
1598 return;
1599 }
1b14d3d8 1600 if(peer->direction == TRNSD_DOWN)
1601 requestfile(peer);
9a2d6cb8 1602 } else {
1603 if(peer->wcsname == NULL)
1604 {
1605 freedcpeer(peer);
1606 return;
1607 }
1608 peer->direction = mydir;
1609 if(peer->direction == TRNSD_UP)
1610 {
01663fd9 1611 if(confgetint("transfer", "ulquota") && hasupload(&dcnet, peer->wcsname))
1612 {
1613 freedcpeer(peer);
1614 return;
1615 }
9a2d6cb8 1616 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1617 } else {
1618 if((transfer = finddownload(peer->wcsname)) == NULL)
1619 {
1620 freedcpeer(peer);
1621 return;
1622 }
1623 transferattach(transfer, &dctransfer, peer);
1624 transfersetstate(transfer, TRNS_HS);
1625 }
1626 transfersetnick(transfer, peer->wcsname);
1627 peer->transfer = transfer;
1628 if(peer->extended)
1629 sendsupports(peer);
1630 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1631 if(peer->key != NULL)
1632 qstrf(sk, "$Key %s|", peer->key);
1633 if(peer->direction == TRNSD_DOWN)
1634 requestfile(peer);
1635 }
d3372da9 1636}
1637
1638static void cmd_peerlock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1639{
9a2d6cb8 1640 char *p, *key;
1641 struct transfer *transfer;
d3372da9 1642
1643 if((p = strchr(args, ' ')) == NULL)
1644 return;
1645 *p = 0;
1646 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
1647 peer->extended = 1;
9a2d6cb8 1648 key = dcmakekey(args);
1649 if(peer->accepted)
1650 {
1651 if(peer->wcsname == NULL)
1652 {
1653 freedcpeer(peer);
1654 return;
1655 }
1656 sendmynick(peer);
1657 sendpeerlock(peer);
1658 if(peer->extended)
1659 sendsupports(peer);
1660 if((transfer = finddownload(peer->wcsname)) == NULL)
1661 {
01663fd9 1662 if(confgetint("transfer", "ulquota") && hasupload(&dcnet, peer->wcsname))
1663 {
1664 freedcpeer(peer);
1665 return;
1666 }
9a2d6cb8 1667 peer->direction = TRNSD_UP;
1668 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1669 } else {
1670 peer->direction = TRNSD_DOWN;
1671 transferattach(transfer, &dctransfer, peer);
1672 transfersetstate(transfer, TRNS_HS);
1673 }
1674 transfersetnick(transfer, peer->wcsname);
1675 peer->transfer = transfer;
1676 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1677 qstrf(sk, "$Key %s|", key);
62da2712 1678 free(key);
9a2d6cb8 1679 } else {
1680 if(peer->key != NULL)
1681 free(peer->key);
1682 peer->key = key;
1683 }
d3372da9 1684}
1685
1686static void cmd_key(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1687{
9a2d6cb8 1688 /* NOP */
1689}
1690
1691static void startdl(struct dcpeer *peer)
1692{
1e9d82b1 1693 if(peer->timeout != NULL)
1694 canceltimer(peer->timeout);
9a2d6cb8 1695 peer->state = PEER_TRNS;
1696 transferstartdl(peer->transfer, peer->sk);
cab0b442 1697 peer->sk->readcb = (void (*)(struct socket *, void *))transread;
1698 peer->sk->errcb = (void (*)(struct socket *, int, void *))transerr;
9a2d6cb8 1699}
1700
1701static void startul(struct dcpeer *peer)
1702{
1e9d82b1 1703 if(peer->timeout != NULL)
1704 canceltimer(peer->timeout);
9a2d6cb8 1705 peer->state = PEER_TRNS;
1706 transferstartul(peer->transfer, peer->sk);
cab0b442 1707 peer->sk->writecb = (void (*)(struct socket *, void *))transwrite;
d3372da9 1708}
1709
1710static void cmd_filelength(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1711{
dcf7a1a2 1712 off_t size;
1fc81821 1713 struct transfer *transfer;
d3372da9 1714
1715 if(peer->transfer == NULL)
1716 {
1717 freedcpeer(peer);
1718 return;
1719 }
dcf7a1a2 1720 size = strtoll(args, NULL, 10);
9a2d6cb8 1721 if(peer->transfer->size != size)
d3372da9 1722 {
d3372da9 1723 transfersetsize(peer->transfer, size);
1fc81821 1724 transfer = peer->transfer;
d3372da9 1725 freedcpeer(peer);
1fc81821 1726 trytransferbypeer(transfer->fnet, transfer->peerid);
d3372da9 1727 return;
1728 }
9a2d6cb8 1729 startdl(peer);
1730 qstr(peer->sk, "$Send|");
d3372da9 1731}
1732
1733static void cmd_error(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1734{
df873cd0 1735 if(peer->fetchingtthl)
1736 {
1737 peer->fetchingtthl = 0;
1738 peer->notthl = 1;
1739 requestfile(peer);
1740 return;
1741 }
d3372da9 1742 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1743 {
1744 transferseterror(peer->transfer, TRNSE_NOTFOUND);
1745 resettransfer(peer->transfer);
1746 return;
1747 }
1748 freedcpeer(peer);
1749}
1750
1751static void cmd_maxedout(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1752{
1753 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1754 {
1755 transferseterror(peer->transfer, TRNSE_NOSLOTS);
1756 resettransfer(peer->transfer);
1757 return;
1758 }
1759 freedcpeer(peer);
1760}
1761
1762static struct
1763{
1764 char *name;
1765 char **file;
1766 void (*func)(void);
1767} lists[] =
1768{
1769 {"MyList.DcLst", &hmlistname, updatehmlist},
1770 {"files.xml", &xmllistname, updatexmllist},
1771 {"files.xml.bz2", &xmlbz2listname, updatexmlbz2list},
1772 {NULL, NULL}
1773};
1774
1775static int openfilelist(char *name)
1776{
1777 int i, fd;
1778 int errnobak;
1779
1780 for(i = 0; lists[i].name != NULL; i++)
1781 {
1782 if(!strcmp(name, lists[i].name))
1783 break;
1784 }
1785 errno = 0;
1786 if(lists[i].name == NULL)
1787 return(-1);
1788 fd = -1;
1789 if((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0))
1790 lists[i].func();
1791 if((fd < 0) && ((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0)))
1792 {
1793 errnobak = errno;
1794 flog(LOG_ERR, "could not open filelist tempfile: %s", strerror(errno));
1795 errno = errnobak;
1796 return(-1);
1797 }
1798 return(fd);
1799}
1800
1801static struct sharecache *findbytth(char *tth32)
1802{
1803 char *buf;
1804 size_t buflen;
1805 struct sharecache *node;
1806
1807 if((buf = base32decode(tth32, &buflen)) == NULL)
1808 return(NULL);
1809 if(buflen != 24)
1810 {
1811 free(buf);
1812 return(NULL);
1813 }
1814 for(node = shareroot->child; node != NULL; node = nextscnode(node))
1815 {
1816 if(node->f.b.hastth && !memcmp(node->hashtth, buf, 24))
1817 break;
1818 }
1819 free(buf);
1820 return(node);
1821}
1822
1823static struct sharecache *resdcpath(char *path, char *charset, char sep)
1824{
1825 struct sharecache *node;
1826 char *p, *p2;
1827
1828 node = shareroot;
1829 p = path;
1830 while(p != NULL)
1831 {
1832 if((p2 = strchr(p, sep)) != NULL)
1833 *(p2++) = 0;
1834 if((node = findcache(node, icsmbstowcs(p, charset, L""))) == NULL)
1835 return(NULL);
1836 p = p2;
1837 }
1838 return(node);
1839}
1840
1841static void cmd_get(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1842{
dcf7a1a2 1843 off_t offset;
d3372da9 1844 char *p, *buf;
1845 wchar_t *buf2;
1846 struct sharecache *node;
1847 struct socket *lesk;
1848 int fd;
1849 struct stat sb;
1850
1851 if(peer->transfer == NULL)
1852 {
1853 freedcpeer(peer);
1854 return;
1855 }
1856 if((p = strchr(args, '$')) == NULL)
1857 {
1858 freedcpeer(peer);
1859 return;
1860 }
1861 *(p++) = 0;
dcf7a1a2 1862 if((offset = (strtoll(p, NULL, 10) - 1)) < 0)
d3372da9 1863 {
1864 freedcpeer(peer);
1865 return;
1866 }
1867 if(((fd = openfilelist(args)) < 0) && (errno != 0))
1868 {
1869 qstr(sk, "$Error Could not send file list|");
1870 freedcpeer(peer);
1871 return;
1872 } else if(fd >= 0) {
1873 if((buf2 = icsmbstowcs(args, DCCHARSET, NULL)) != NULL)
1874 transfersetpath(peer->transfer, buf2);
f00d7432 1875 peer->transfer->flags.b.minislot = 1;
d3372da9 1876 }
1877 if(fd < 0)
1878 {
1d85f24b 1879 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 1880 if((node = resdcpath(args, DCCHARSET, '\\')) == NULL)
1881 {
1882 qstrf(sk, "$Error File not in share|");
1883 freedcpeer(peer);
1884 return;
1885 }
1886 if((fd = opensharecache(node)) < 0)
1887 {
1888 qstrf(sk, "$Error %s|", strerror(errno));
1889 freedcpeer(peer);
1890 return;
1891 }
1892 buf = getfspath(node);
1893 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1894 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1895 else
1896 transfersetpath(peer->transfer, buf2);
1897 free(buf);
1898 }
1899 if(fstat(fd, &sb) < 0)
1900 {
1901 close(fd);
1902 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1903 qstrf(sk, "$Error|");
1904 freedcpeer(peer);
1905 return;
1906 }
f00d7432 1907 if(sb.st_size < 65536)
1908 peer->transfer->flags.b.minislot = 1;
1909 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
565006d1 1910 close(fd);
f00d7432 1911 qstr(sk, "$MaxedOut|");
1912 freedcpeer(peer);
1913 return;
1914 }
d3372da9 1915 if((offset != 0) && (lseek(fd, offset, SEEK_SET) < 0))
1916 {
1917 close(fd);
1918 qstrf(sk, "$Error Offset out of range|");
1919 freedcpeer(peer);
1920 return;
1921 }
1922 lesk = wrapsock(fd);
1923 transferprepul(peer->transfer, sb.st_size, offset, -1, lesk);
1924 putsock(lesk);
dcf7a1a2 1925 qstrf(sk, "$FileLength %ji|", (intmax_t)peer->transfer->size);
d3372da9 1926}
1927
1928static void cmd_send(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1929{
1930 if(peer->transfer == NULL)
1931 {
1932 freedcpeer(peer);
1933 return;
1934 }
1935 if(peer->transfer->localend == NULL)
1936 {
1937 freedcpeer(peer);
1938 return;
1939 }
1940 peer->ptclose = 1;
9a2d6cb8 1941 startul(peer);
d3372da9 1942}
1943
1944static void cmd_supports(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1945{
1946 int i;
1947 char *p, *p2;
1948 char **arr;
1949 size_t arrsize, arrdata;
1950
1951 if(peer->supports != NULL)
1952 {
1953 for(i = 0; peer->supports[i] != NULL; i++)
1954 free(peer->supports[i]);
1955 free(peer->supports);
1956 }
1957 arr = NULL;
1958 arrsize = arrdata = 0;
1959 p = args;
1960 do
1961 {
1962 if((p2 = strchr(p, ' ')) != NULL)
1963 *(p2++) = 0;
1964 if(*p == 0)
1965 continue;
1966 addtobuf(arr, sstrdup(p));
1967 } while((p = p2) != NULL);
1968 addtobuf(arr, NULL);
1969 peer->supports = arr;
d3372da9 1970}
1971
1972static void cmd_getblock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1973{
1974 int fd;
1975 char *p, *p2;
dcf7a1a2 1976 off_t start, numbytes;
d3372da9 1977 char *charset, *buf;
1978 wchar_t *buf2;
1979 struct sharecache *node;
1980 struct stat sb;
1981 struct socket *lesk;
1982
1983 if(peer->transfer == NULL)
1984 {
1985 freedcpeer(peer);
1986 return;
1987 }
1988 p = args;
1989 if((p2 = strchr(p, ' ')) == NULL)
1990 {
1991 freedcpeer(peer);
1992 return;
1993 }
1994 *(p2++) = 0;
dcf7a1a2 1995 start = strtoll(p, NULL, 10);
d3372da9 1996 p = p2;
1997 if((p2 = strchr(p, ' ')) == NULL)
1998 {
1999 freedcpeer(peer);
2000 return;
2001 }
2002 *(p2++) = 0;
dcf7a1a2 2003 numbytes = strtoll(p, NULL, 10);
d3372da9 2004 p = p2;
2005 if(!strcmp(cmd, "$UGetBlock") || !strcmp(cmd, "$UGetZBlock"))
2006 charset = "UTF-8";
2007 else
1d85f24b 2008 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 2009 charset = DCCHARSET;
2010 if(!strcmp(cmd, "$GetZBlock") || !strcmp(cmd, "$UGetZBlock"))
2011 initcompress(peer, CPRS_ZLIB);
2012 if(((fd = openfilelist(p)) < 0) && (errno != 0))
2013 {
2014 qstr(sk, "$Error Could not send file list|");
2015 return;
2016 } else if(fd >= 0) {
2017 if((buf2 = icsmbstowcs(args, charset, NULL)) != NULL)
2018 transfersetpath(peer->transfer, buf2);
f00d7432 2019 peer->transfer->flags.b.minislot = 1;
d3372da9 2020 }
2021 if(fd < 0)
2022 {
d3372da9 2023 if((node = resdcpath(p, charset, '\\')) == NULL)
2024 {
2025 qstr(sk, "$Error File not in cache|");
2026 return;
2027 }
2028 if((fd = opensharecache(node)) < 0)
2029 {
2030 qstrf(sk, "$Error %s|", strerror(errno));
2031 return;
2032 }
2033 buf = getfspath(node);
2034 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
2035 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
2036 else
2037 transfersetpath(peer->transfer, buf2);
2038 free(buf);
2039 }
2040 if(fstat(fd, &sb) < 0)
2041 {
2042 close(fd);
2043 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
2044 qstr(sk, "$Error|");
2045 return;
2046 }
f00d7432 2047 if(sb.st_size < 65536)
2048 peer->transfer->flags.b.minislot = 1;
2049 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
565006d1 2050 close(fd);
f00d7432 2051 qstr(sk, "$MaxedOut|");
2052 return;
2053 }
d3372da9 2054 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
2055 {
2056 close(fd);
2057 qstr(sk, "$Error Offset out of range|");
2058 return;
2059 }
2060 if((numbytes < 0) || (start + numbytes > sb.st_size))
2061 numbytes = sb.st_size - start;
2062 lesk = wrapsock(fd);
2063 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2064 putsock(lesk);
dcf7a1a2 2065 qstrf(sk, "$Sending %ji|", (intmax_t)numbytes);
9a2d6cb8 2066 startul(peer);
d3372da9 2067}
2068
2069static void cmd_adcget(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2070{
2071 int i;
2072 char **argv, *buf;
dcf7a1a2 2073 off_t start, numbytes;
d3372da9 2074 struct sharecache *node;
2075 struct stat sb;
2076 struct socket *lesk;
2077 wchar_t *wbuf;
2078 int fd;
2079
2080 if(peer->transfer == NULL)
2081 {
2082 freedcpeer(peer);
2083 return;
2084 }
2085 if((argv = parseadc(args)) == NULL)
2086 {
2087 freedcpeer(peer);
2088 return;
2089 }
2090 if(parrlen(argv) < 4)
2091 {
2092 freedcpeer(peer);
2093 goto out;
2094 }
dcf7a1a2
FT		 2095 start = strtoll(argv[2], NULL, 10);
2096 numbytes = strtoll(argv[3], NULL, 10);
d3372da9 2097 node = NULL;
2098 fd = -1;
2099 if(((fd = openfilelist(argv[1])) < 0) && (errno != 0))
2100 {
2101 qstr(sk, "$Error Could not send file list|");
2102 goto out;
2103 } else if(fd >= 0) {
2104 if((wbuf = icsmbstowcs(argv[1], "UTF-8", NULL)) != NULL)
2105 transfersetpath(peer->transfer, wbuf);
f00d7432 2106 peer->transfer->flags.b.minislot = 1;
d3372da9 2107 }
2108 if(fd < 0)
2109 {
d3372da9 2110 if(!strncmp(argv[1], "TTH/", 4))
2111 {
2112 if((node = findbytth(argv[1] + 4)) == NULL)
2113 {
2114 qstr(sk, "$Error File not in cache|");
2115 goto out;
2116 }
2117 } else {
9a2d6cb8 2118 if((node = resdcpath((argv[1][0] == '/')?(argv[1] + 1):(argv[1]), "UTF-8", '/')) == NULL)
d3372da9 2119 {
2120 qstr(sk, "$Error File not in cache|");
2121 goto out;
2122 }
2123 }
2124 if((fd = opensharecache(node)) < 0)
2125 {
2126 qstrf(sk, "$Error %s|", strerror(errno));
2127 goto out;
2128 }
2129 buf = getfspath(node);
2130 if((wbuf = icsmbstowcs(buf, NULL, NULL)) == NULL)
2131 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
2132 else
2133 transfersetpath(peer->transfer, wbuf);
2134 free(buf);
2135 }
2136 if(!strcmp(argv[0], "file"))
2137 {
2138 for(i = 4; argv[i] != NULL; i++)
2139 {
2140 if(!strcmp(argv[i], "ZL1"))
2141 initcompress(peer, CPRS_ZLIB);
2142 }
2143 if(fstat(fd, &sb) < 0)
2144 {
2145 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
2146 qstr(sk, "$Error|");
2147 goto out;
2148 }
f00d7432 2149 if(sb.st_size < 65536)
2150 peer->transfer->flags.b.minislot = 1;
2151 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
2152 qstr(sk, "$MaxedOut|");
2153 goto out;
2154 }
d3372da9 2155 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
2156 {
2157 qstr(sk, "$Error Offset out of range|");
2158 goto out;
2159 }
2160 if((numbytes < 0) || (start + numbytes > sb.st_size))
2161 numbytes = sb.st_size - start;
2162 lesk = wrapsock(fd);
2163 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2164 putsock(lesk);
2165 fd = -1;
2166 qstr(sk, "$ADCSND");
2167 sendadc(sk, "file");
2168 sendadc(sk, argv[1]);
dcf7a1a2
FT		 2169 sendadcf(sk, "%ji", (intmax_t)start);
2170 sendadcf(sk, "%ji", (intmax_t)numbytes);
d3372da9 2171 if(peer->compress == CPRS_ZLIB)
2172 sendadc(sk, "ZL1");
2173 qstr(sk, "|");
9a2d6cb8 2174 startul(peer);
d3372da9 2175 } else if(!strcmp(argv[0], "tthl")) {
2176 /*
2177 * XXX: Implement full TTHL support.
2178 *
2179 * In the meantime, this is better than nothing, since it at
2180 * least allows fetching of the TTH root if it isn't already
2181 * known.
2182 */
2183 if(node == NULL)
2184 {
2185 qstr(sk, "$Error no TTHL data for virtual files|");
2186 goto out;
2187 }
2188 qstr(sk, "$ADCSND");
2189 sendadc(sk, "tthl");
2190 sendadc(sk, argv[1]);
2191 sendadc(sk, "0");
2192 sendadc(sk, "24");
2193 qstr(sk, "|");
2194 sockqueue(sk, node->hashtth, 24);
2195 } else {
2196 qstr(sk, "$Error Namespace not implemented|");
2197 goto out;
2198 }
d3372da9 2199
2200 out:
2201 if(fd >= 0)
2202 close(fd);
2203 freeparr(argv);
2204}
2205
9a2d6cb8 2206static void handletthl(struct dcpeer *peer)
2207{
2208 char buf[24];
2209
2210 while(peer->inbufdata >= 24)
2211 {
2212 pushtigertree(&peer->tth, peer->inbuf);
2213 memmove(peer->inbuf, peer->inbuf + 24, peer->inbufdata -= 24);
e52006fe 2214 peer->curread += 24;
9a2d6cb8 2215 }
e52006fe 2216 if(peer->curread >= peer->totalsize)
9a2d6cb8 2217 {
1e9d82b1 2218 if(peer->timeout == NULL)
2219 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
9a2d6cb8 2220 peer->state = PEER_CMD;
2221 synctigertree(&peer->tth);
2222 restigertree(&peer->tth, buf);
2223 transfersethash(peer->transfer, newhash(L"TTH", 24, buf));
2224 requestfile(peer);
2225 }
2226}
2227
2228static void cmd_adcsnd(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2229{
2230 char **argv;
dcf7a1a2 2231 off_t start, numbytes;
9a2d6cb8 2232
2233 if(peer->transfer == NULL)
2234 {
2235 freedcpeer(peer);
2236 return;
2237 }
2238 if((argv = parseadc(args)) == NULL)
2239 {
2240 freedcpeer(peer);
2241 return;
2242 }
2243 if(parrlen(argv) < 4)
2244 {
2245 freedcpeer(peer);
2246 goto out;
2247 }
dcf7a1a2
FT		 2248 start = strtoll(argv[2], NULL, 10);
2249 numbytes = strtoll(argv[3], NULL, 10);
9a2d6cb8 2250 if(!strcmp(argv[0], "tthl"))
2251 {
2252 if((start != 0) || (numbytes % 24 != 0))
2253 {
2254 /* Weird. Bail out. */
2255 freedcpeer(peer);
2256 goto out;
2257 }
1e9d82b1 2258 if(peer->timeout != NULL)
2259 canceltimer(peer->timeout);
9a2d6cb8 2260 peer->state = PEER_TTHL;
2261 peer->totalsize = numbytes;
2262 peer->curread = 0;
df873cd0 2263 peer->fetchingtthl = 0;
9a2d6cb8 2264 inittigertree(&peer->tth);
2265 handletthl(peer);
2266 } else if(!strcmp(argv[0], "file")) {
2267 if(start != peer->transfer->curpos)
2268 {
2269 freedcpeer(peer);
2270 goto out;
2271 }
2272 if(start + numbytes != peer->transfer->size)
2273 {
2274 transfersetsize(peer->transfer, start + numbytes);
2275 freedcpeer(peer);
2276 goto out;
2277 }
2278 startdl(peer);
cab0b442 2279 if(peer->inbufdata > 0)
2280 {
2281 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2282 peer->inbufdata = 0;
2283 transread(sk, peer);
2284 }
9a2d6cb8 2285 } else {
2286 /* We certainly didn't request this...*/
2287 freedcpeer(peer);
2288 goto out;
2289 }
2290
2291 out:
2292 freeparr(argv);
2293}
2294
2295static void cmd_sending(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2296{
dcf7a1a2 2297 off_t numbytes;
9a2d6cb8 2298
2299 if(peer->transfer == NULL)
2300 {
2301 freedcpeer(peer);
2302 return;
2303 }
dcf7a1a2 2304 numbytes = strtoll(args, NULL, 10);
9a2d6cb8 2305 if(peer->transfer->size - peer->transfer->curpos != numbytes)
2306 {
2307 transfersetsize(peer->transfer, peer->transfer->curpos + numbytes);
2308 freedcpeer(peer);
2309 return;
2310 }
2311 startdl(peer);
cab0b442 2312 if(peer->inbufdata > 0)
2313 {
2314 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2315 peer->inbufdata = 0;
2316 transread(sk, peer);
2317 }
9a2d6cb8 2318}
2319
d3372da9 2320/*
2321Hub skeleton:
2322static void cmd_(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
2323{
2324 struct dchub *hub;
2325
2326 hub = fn->data;
2327 hubhandleaction(sk, fn, cmd, args);
2328}
2329
2330Peer skeleton:
2331static void cmd_(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2332{
d3372da9 2333}
2334
2335*/
2336
2337static int hubreqconn(struct fnetpeer *peer)
2338{
2339 struct dchub *hub;
2340 char *mbsnick;
2341
2342 if((peer->fn->state != FNN_EST) || (peer->fn->fnet != &dcnet))
2343 {
2344 errno = EINVAL;
2345 return(1);
2346 }
2347 if((hub = peer->fn->data) == NULL)
2348 {
2349 errno = EFAULT;
2350 return(1);
2351 }
1d85f24b 2352 if((mbsnick = icwcstombs(peer->id, hub->charset)) == NULL)
d3372da9 2353 return(1); /* Shouldn't happen, of course, but who knows... */
2354 if(tcpsock != NULL)
2355 {
ffa81d5f 2356 sendctm(hub->sk, mbsnick);
d3372da9 2357 expectpeer(mbsnick, peer->fn);
2358 } else {
ffa81d5f 2359 qstrf(hub->sk, "$RevConnectToMe %s %s|", hub->nativenick, mbsnick);
d3372da9 2360 }
2361 free(mbsnick);
2362 return(0);
2363}
2364
2365static int hubsendchat(struct fnetnode *fn, int public, wchar_t *to, wchar_t *string)
2366{
2367 struct dchub *hub;
2368 char *mbsstring, *mbsto;
2369
2370 hub = fn->data;
1d85f24b 2371 if((mbsto = icwcstombs(to, hub->charset)) == NULL)
d3372da9 2372 {
2373 errno = EILSEQ;
2374 return(1);
2375 }
1d85f24b 2376 if((mbsstring = icwcstombs(string, hub->charset)) == NULL)
d3372da9 2377 {
2378 errno = EILSEQ;
2379 return(1);
2380 }
2381 if((strchr(mbsto, '|') != NULL) || (strchr(mbsto, ' ') != NULL))
2382 {
2383 free(mbsto);
2384 free(mbsstring);
2385 errno = ESRCH;
2386 return(1);
2387 }
2388 if(strchr(mbsstring, '|') != NULL)
2389 {
2390 free(mbsto);
2391 free(mbsstring);
2392 errno = EILSEQ;
2393 return(1);
2394 }
2395 if(public)
2396 {
2397 if(*to == L'\0')
2398 {
ffa81d5f 2399 qstrf(hub->sk, "<%s> %s|", hub->nativenick, mbsstring);
d3372da9 2400 } else {
ffa81d5f 2401 qstrf(hub->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
d3372da9 2402 }
2403 } else {
ffa81d5f 2404 qstrf(hub->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
d3372da9 2405 }
2406 free(mbsto);
2407 free(mbsstring);
2408 return(0);
2409}
2410
2411static void findsizelimit(struct sexpr *sexpr, int *min, int *max)
2412{
2413 int minl, maxl, minr, maxr, retmin, retmax;
2414
2415 switch(sexpr->op)
2416 {
2417 case SOP_AND:
2418 findsizelimit(sexpr->l, &minl, &maxl);
2419 findsizelimit(sexpr->r, &minr, &maxr);
2420 retmin = (minl > minr)?minl:minr;
2421 if((maxl != -1) && (maxr != -1))
2422 retmax = (maxl < maxr)?maxl:maxr;
2423 else if(maxl != -1)
2424 retmax = maxl;
2425 else if(maxr != -1)
2426 retmax = maxr;
2427 else
2428 retmax = -1;
2429 break;
2430 case SOP_OR:
2431 findsizelimit(sexpr->l, &minl, &maxl);
2432 findsizelimit(sexpr->r, &minr, &maxr);
2433 retmin = (minl < minr)?minl:minr;
2434 if((maxl == -1) || (maxr == -1))
2435 retmax = -1;
2436 else
2437 retmax = (maxl > maxr)?maxl:maxr;
2438 break;
2439 case SOP_NOT:
2440 findsizelimit(sexpr->l, &minl, &maxl);
2441 if((minl == 0) && (maxl == -1)) /* Interval is unspecified */
2442 {
2443 retmin = 0;
2444 retmax = -1;
2445 } else if((minl == 0) && (maxl != -1)) {
2446 retmin = maxl + 1;
2447 retmax = -1;
2448 } else if((minl != 0) && (maxl == -1)) {
2449 retmin = 0;
2450 retmax = minl - 1;
2451 } else { /* This would yield two seperate intervals, which DC cannot handle */
2452 retmin = 0;
2453 retmax = -1;
2454 }
2455 case SOP_SIZELT:
2456 retmin = 0;
2457 retmax = sexpr->d.n - 1;
2458 break;
2459 case SOP_SIZEEQ:
2460 retmin = sexpr->d.n;
2461 retmax = sexpr->d.n;
2462 break;
2463 case SOP_SIZEGT:
2464 retmin = sexpr->d.n + 1;
2465 retmax = -1;
2466 break;
2467 default:
2468 retmin = 0;
2469 retmax = -1;
2470 break;
2471 }
2472 if(min != NULL)
2473 *min = retmin;
2474 if(max != NULL)
2475 *max = retmax;
2476}
2477
9d8cf743 2478static struct hash *findsehash(struct sexpr *sexpr)
2479{
2480 struct hash *h1, *h2;
2481
2482 switch(sexpr->op)
2483 {
2484 case SOP_AND:
2485 if((h1 = findsehash(sexpr->l)) != NULL)
2486 return(h1);
2487 if((h1 = findsehash(sexpr->r)) != NULL)
2488 return(h1);
2489 break;
2490 case SOP_OR:
175c86de 2491 if((h1 = findsehash(sexpr->l)) == NULL)
2492 return(NULL);
2493 if((h2 = findsehash(sexpr->r)) == NULL)
2494 return(NULL);
9d8cf743 2495 if(hashcmp(h1, h2))
2496 return(h1);
2497 break;
2498 case SOP_HASHIS:
2499 if(!wcscmp(sexpr->d.hash->algo, L"TTH"))
2500 return(sexpr->d.hash);
2501 default:
2502 break;
2503 }
2504 return(NULL);
2505}
2506
d3372da9 2507static int hubsearch(struct fnetnode *fn, struct search *srch, struct srchfnnlist *ln)
2508{
2509 struct dchub *hub;
2510 struct wcslist *list, *cur;
2511 char *sstr, *buf, *p;
2512 size_t sstrsize, sstrdata;
2513 struct sockaddr *name;
2514 socklen_t namelen;
2515 int minsize, maxsize;
9d8cf743 2516 struct hash *hash;
d3372da9 2517
2518 hub = fn->data;
ffa81d5f 2519 if((fn->state != FNN_EST) || (hub->sk == NULL) || (hub->sk->state != SOCK_EST))
d3372da9 2520 return(1);
2521 list = findsexprstrs(srch->sexpr);
2522 findsizelimit(srch->sexpr, &minsize, &maxsize);
9d8cf743 2523 hash = findsehash(srch->sexpr);
d3372da9 2524 if((minsize != 0) && (maxsize != -1))
2525 {
2526 /* Choose either minsize or maxsize by trying to determine
2527 * which choice will be most restrictive. The result can be
2528 * approximative at best anyway, so don't try too hard... */
2529 if((50000000 - maxsize) > (minsize - 50000000))
2530 minsize = 0;
2531 else
2532 maxsize = -1;
2533 }
d3372da9 2534 sstr = NULL;
2535 sstrsize = sstrdata = 0;
9d8cf743 2536 if((hash != NULL) && (hash->len == 24))
d3372da9 2537 {
9d8cf743 2538 /* Prioritize hash searches above all else */
2539 bufcat(sstr, "F?T?0?9?TTH:", 12);
2540 buf = base32encode(hash->buf, hash->len);
2541
2542 bufcat(sstr, buf, 39);
2543 free(buf);
2544 } else {
2545 if(minsize != 0)
d3372da9 2546 {
9d8cf743 2547 sizebuf2(sstr, sstrdata + 32, 1);
fe42d689 2548 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?F?%i?1?", minsize);
9d8cf743 2549 } else if(maxsize != -1) {
2550 sizebuf2(sstr, sstrdata + 32, 1);
fe42d689 2551 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?T?%i?1?", maxsize);
9d8cf743 2552 } else {
2553 bufcat(sstr, "F?F?0?1?", 8);
2554 }
2555 if(list != NULL)
2556 {
2557 for(cur = list; cur != NULL; cur = cur->next)
d3372da9 2558 {
1d85f24b 2559 /* Use DCCHARSET in $Get paths until further researched... */
9d8cf743 2560 if((buf = icwcstombs(cur->str, DCCHARSET)) == NULL)
2561 {
2562 /* Can't find anything anyway if the search expression
2563 * requires characters outside DC's charset. There's
2564 * nothing technically wrong with the search itself,
2565 * however, so return success. This should be
2566 * considered as an optimization. */
2567 freesl(&list);
2568 if(sstr != NULL)
2569 free(sstr);
2570 return(0);
2571 }
2572 if(cur != list)
2573 addtobuf(sstr, '$');
2574 /*
2575 * It probably doesn't hurt if buf contains any extra
2576 * dollar signs - it will just result in extra search
2577 * terms, and the extraneous results will be filtered by
2578 * the search layer anyway. It hurts if it contains any
2579 * pipes, though, so let's sell them for money.
2580 */
2581 for(p = buf; *p; p++)
2582 {
2583 if(*p == '|')
2584 *p = '$';
2585 }
2586 bufcat(sstr, buf, strlen(buf));
2587 free(buf);
d3372da9 2588 }
9d8cf743 2589 } else {
2590 /* Will match all files... :-/ */
2591 addtobuf(sstr, '.');
d3372da9 2592 }
d3372da9 2593 }
2594 addtobuf(sstr, 0);
2595 if(tcpsock != NULL)
2596 {
ffa81d5f 2597 if(sockgetremotename2(udpsock, hub->sk, &name, &namelen) < 0)
d3372da9 2598 {
2599 flog(LOG_WARNING, "cannot get address of UDP socket");
2600 } else {
ffa81d5f 2601 qstrf(hub->sk, "$Search %s %s|", formataddress(name, namelen), sstr);
d3372da9 2602 free(name);
2603 }
2604 } else {
ffa81d5f 2605 qstrf(hub->sk, "$Search Hub:%s %s|", hub->nativenick, sstr);
d3372da9 2606 }
2607 free(sstr);
2608 freesl(&list);
2609 fn->lastsrch = time(NULL);
2610 return(0);
2611}
2612
2613#undef skipcmd
2614#undef qstr
2615#undef qstrf
2616
2617#define cc(c) ((void (*)(struct socket *, void *, char *, char *))(c))
8b930085 2618static struct command hubcmds[] =
d3372da9 2619{
2620 {"$Lock", cc(cmd_lock)},
2621 {"$HubName", cc(cmd_hubname)},
2622 {"$Hello", cc(cmd_hello)},
2623 {"$Quit", cc(cmd_quit)},
2624 {"$NickList", cc(cmd_nicklist)},
2625 {"$OpList", cc(cmd_oplist)},
2626 {"$MyINFO", cc(cmd_myinfo)},
2627 {"$ForceMove", cc(cmd_forcemove)},
2628 {"$Search", cc(cmd_search)},
2629 {"$MultiSearch", cc(cmd_search)},
2630 {"$ConnectToMe", cc(cmd_connecttome)},
2631 {"$RevConnectToMe", cc(cmd_revconnecttome)},
2632 {"$GetNetInfo", cc(cmd_getnetinfo)},
2633 {"$To:", cc(cmd_to)},
2634 {"$SR", cc(cmd_sr)},
2635 {"$UserCommand", cc(cmd_usercommand)},
48509089 2636 {"$GetPass", cc(cmd_getpass)},
c9b3ad74 2637 {"$LogedIn", cc(cmd_logedin)}, /* sic */
08b74f8c 2638 {"$Supports", cc(cmd_hubsupports)},
d3372da9 2639 {NULL, NULL}
2640};
2641
8b930085 2642static struct command peercmds[] =
d3372da9 2643{
2644 {"$MyNick", cc(cmd_mynick)},
2645 {"$Lock", cc(cmd_peerlock)},
2646 {"$Direction", cc(cmd_direction)},
2647 {"$Key", cc(cmd_key)},
2648 {"$FileLength", cc(cmd_filelength)},
2649 {"$Error", cc(cmd_error)},
2650 {"$MaxedOut", cc(cmd_maxedout)},
2651 {"$Get", cc(cmd_get)},
2652 {"$Send", cc(cmd_send)},
2653 {"$Supports", cc(cmd_supports)},
2654 {"$GetBlock", cc(cmd_getblock)},
2655 {"$UGetBlock", cc(cmd_getblock)},
2656 {"$GetZBlock", cc(cmd_getblock)},
2657 {"$UGetZBlock", cc(cmd_getblock)},
2658 {"$ADCGET", cc(cmd_adcget)},
9a2d6cb8 2659 {"$ADCSND", cc(cmd_adcsnd), 1},
2660 {"$Sending", cc(cmd_sending), 1},
d3372da9 2661 {NULL, NULL}
2662};
2663#undef cc
2664
2665static void dctransdetach(struct transfer *transfer, struct dcpeer *peer)
2666{
cab0b442 2667 CBUNREG(transfer, trans_filterout, peer);
d3372da9 2668 if(peer->freeing)
2669 return;
2670 peer->transfer = NULL;
2671 freedcpeer(peer);
2672}
2673
2674static void dctransgotdata(struct transfer *transfer, struct dcpeer *peer)
2675{
2676 int ret;
2677 void *buf;
c7185019 2678 unsigned char outbuf[1024];
d3372da9 2679 z_stream *cstr;
2680 size_t bufsize;
2681
2682 if((peer->state == PEER_TRNS) || (peer->state == PEER_SYNC))
2683 {
2684 if(sockqueuesize(peer->sk) < 65536)
2685 {
2686 if((buf = transfergetdata(transfer, &bufsize)) != NULL)
2687 {
2688 if(peer->compress == CPRS_NONE)
2689 {
2690 sockqueue(peer->sk, buf, bufsize);
2691 } else if(peer->compress == CPRS_ZLIB) {
2692 cstr = peer->cprsdata;
2693 cstr->next_in = buf;
2694 cstr->avail_in = bufsize;
2695 while(cstr->avail_in > 0)
2696 {
2697 cstr->next_out = outbuf;
2698 cstr->avail_out = sizeof(outbuf);
2699 if((ret = deflate(cstr, 0)) != Z_OK)
2700 {
2701 flog(LOG_WARNING, "bug? deflate() did not return Z_OK (but rather %i)", ret);
2702 freedcpeer(peer);
2703 return;
2704 }
2705 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2706 }
2707 }
2708 free(buf);
2709 }
2710 if(peer->state == PEER_SYNC)
2711 {
2712 if(peer->compress == CPRS_ZLIB)
2713 {
2714 cstr = peer->cprsdata;
2715 cstr->next_in = NULL;
2716 cstr->avail_in = 0;
2717 do
2718 {
2719 cstr->next_out = outbuf;
2720 cstr->avail_out = sizeof(outbuf);
2721 ret = deflate(cstr, Z_FINISH);
2722 if((ret != Z_OK) && (ret != Z_STREAM_END))
2723 {
2724 flog(LOG_WARNING, "bug? deflate(Z_FINISH) did not return Z_OK (but rather %i)", ret);
2725 freedcpeer(peer);
2726 return;
2727 }
2728 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2729 } while(ret != Z_STREAM_END);
2730 }
2731 if(peer->ptclose)
2732 {
2733 freedcpeer(peer);
2734 } else {
1e9d82b1 2735 if(peer->timeout == NULL)
2736 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 2737 peer->state = PEER_CMD;
2738 endcompress(peer);
2739 transfersetstate(transfer, TRNS_HS);
2740 socksettos(peer->sk, confgetint("fnet", "fnptos"));
bfc261fe 2741 transfer->flags.b.minislot = 0;
cab0b442 2742 peer->sk->writecb = NULL;
d3372da9 2743 }
2744 }
2745 }
2746 }
2747}
2748
2749static void dctransendofdata(struct transfer *transfer, struct dcpeer *peer)
2750{
2751 peer->state = PEER_SYNC;
2752 dctransgotdata(transfer, peer);
2753}
2754
2755static void dcwantdata(struct transfer *transfer, struct dcpeer *peer)
2756{
2757 if(transferdatasize(transfer) < 65536)
2758 peer->sk->ignread = 0;
2759}
2760
cab0b442 2761static void transread(struct socket *sk, struct dcpeer *peer)
d3372da9 2762{
cab0b442 2763 void *buf;
2764 size_t bufsize;
d3372da9 2765 struct transfer *transfer;
2766
cab0b442 2767 if((buf = sockgetinbuf(sk, &bufsize)) == NULL)
2768 return;
d3372da9 2769 if(peer->transfer == NULL)
2770 {
cab0b442 2771 free(buf);
d3372da9 2772 freedcpeer(peer);
2773 return;
2774 }
cab0b442 2775 transferputdata(peer->transfer, buf, bufsize);
2776 free(buf);
d3372da9 2777 if(peer->transfer->curpos >= peer->transfer->size)
2778 {
2779 transfer = peer->transfer;
2780 transferdetach(transfer);
2781 transferendofdata(transfer);
2782 return;
2783 }
2784 if(transferdatasize(peer->transfer) > 65535)
cab0b442 2785 sk->ignread = 1;
d3372da9 2786}
2787
cab0b442 2788static void transerr(struct socket *sk, int err, struct dcpeer *peer)
d3372da9 2789{
2790 struct transfer *transfer;
2791
2792 if((transfer = peer->transfer) == NULL)
cab0b442 2793 {
2794 freedcpeer(peer);
d3372da9 2795 return;
cab0b442 2796 }
d3372da9 2797 transferdetach(transfer);
2798 transferendofdata(transfer);
2799}
2800
cab0b442 2801static void transwrite(struct socket *sk, struct dcpeer *peer)
d3372da9 2802{
2803 if((peer->state != PEER_TRNS) && (peer->state != PEER_SYNC))
cab0b442 2804 return;
d3372da9 2805 if(peer->transfer == NULL)
2806 {
2807 freedcpeer(peer);
cab0b442 2808 return;
d3372da9 2809 }
2810 dctransgotdata(peer->transfer, peer);
2811}
2812
cab0b442 2813static void udpread(struct socket *sk, void *data)
d3372da9 2814{
d86b7a9f 2815 char *buf, *p, *p2, *hashbuf;
2816 size_t buflen, hashlen;
d3372da9 2817 char *nick, *filename, *hubname;
99a28d47 2818 struct sockaddr_in hubaddr;
dcf7a1a2
FT		 2819 off_t size;
2820 int slots;
d3372da9 2821 struct fnetnode *fn, *myfn;
2822 struct dchub *hub;
2823 struct srchres *sr;
2824 wchar_t *wnick, *wfile;
d86b7a9f 2825 struct hash *hash;
d3372da9 2826
2827 if((buf = sockgetinbuf(sk, &buflen)) == NULL)
cab0b442 2828 return;
d3372da9 2829 buf = srealloc(buf, buflen + 1);
2830 buf[buflen] = 0;
2831 if(!strncmp(buf, "$SR ", 4))
2832 {
2833 p = buf + 4;
2834 nick = p;
2835 if((p2 = strchr(p, ' ')) == NULL)
2836 {
2837 free(buf);
cab0b442 2838 return;
d3372da9 2839 }
2840 *p2 = 0;
2841 p = p2 + 1;
2842 filename = p;
2843 if((p2 = strchr(p, 5)) == NULL)
2844 {
2845 free(buf);
cab0b442 2846 return;
d3372da9 2847 }
2848 *p2 = 0;
2849 p = p2 + 1;
2850 if((p2 = strchr(p, ' ')) == NULL)
2851 {
2852 free(buf);
cab0b442 2853 return;
d3372da9 2854 }
2855 *p2 = 0;
dcf7a1a2 2856 size = strtoll(p, NULL, 10);
d3372da9 2857 p = p2 + 1;
2858 if((p2 = strchr(p, '/')) == NULL)
2859 {
2860 free(buf);
cab0b442 2861 return;
d3372da9 2862 }
2863 *p2 = 0;
2864 slots = atoi(p);
2865 p = p2 + 1;
2866 if((p2 = strchr(p, 5)) == NULL)
2867 {
2868 free(buf);
cab0b442 2869 return;
d3372da9 2870 }
2871 p = p2 + 1;
2872 hubname = p;
2873 if((p2 = strstr(p, " (")) == NULL)
2874 {
2875 free(buf);
cab0b442 2876 return;
d3372da9 2877 }
2878 *p2 = 0;
99a28d47 2879 p = p2 + 2;
2880 if((p2 = strchr(p, ':')) == NULL)
2881 {
2882 free(buf);
cab0b442 2883 return;
99a28d47 2884 }
870bf4ad 2885 *(p2++) = 0;
99a28d47 2886 hubaddr.sin_family = AF_INET;
2887 if(!inet_aton(p, &hubaddr.sin_addr))
2888 {
2889 free(buf);
cab0b442 2890 return;
99a28d47 2891 }
2892 p = p2;
2893 if((p2 = strchr(p, ')')) == NULL)
2894 {
2895 free(buf);
cab0b442 2896 return;
99a28d47 2897 }
2898 *p2 = 0;
2899 hubaddr.sin_port = htons(atoi(p));
1d85f24b 2900 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 2901 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
2902 {
d3372da9 2903 free(buf);
cab0b442 2904 return;
d3372da9 2905 }
2906 myfn = NULL;
d86b7a9f 2907 hash = NULL;
2908 if(!strncmp(hubname, "TTH:", 4))
d3372da9 2909 {
d86b7a9f 2910 if((hashbuf = base32decode(hubname + 4, &hashlen)) != NULL)
2911 {
2912 if(hashlen == 24)
2913 hash = newhash(L"TTH", 24, hashbuf);
2914 free(hashbuf);
2915 }
2916 } else {
2917 for(fn = fnetnodes; fn != NULL; fn = fn->next)
d3372da9 2918 {
d86b7a9f 2919 if((fn->fnet == &dcnet) && ((hub = fn->data) != NULL))
d3372da9 2920 {
d86b7a9f 2921 if((hub->nativename != NULL) && !strcmp(hub->nativename, hubname))
d3372da9 2922 {
d86b7a9f 2923 if(myfn == NULL)
2924 {
2925 myfn = fn;
2926 } else {
2927 myfn = NULL;
2928 break;
2929 }
d3372da9 2930 }
2931 }
2932 }
2933 }
99a28d47 2934 if(myfn == NULL)
2935 {
2936 for(fn = fnetnodes; fn != NULL; fn = fn->next)
2937 {
ffa81d5f 2938 if((fn->fnet == &dcnet) && ((hub = fn->data) != NULL))
99a28d47 2939 {
ffa81d5f
FT		 2940 if((hub->sk != NULL) && addreq(hub->sk->remote, (struct sockaddr *)&hubaddr))
2941 {
2942 myfn = fn;
2943 break;
2944 }
99a28d47 2945 }
2946 }
2947 }
1d85f24b 2948 hub = NULL;
2949 if(myfn != NULL)
2950 hub = myfn->data;
2951 if((wnick = icmbstowcs(nick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
2952 {
2953 free(buf);
cab0b442 2954 return;
1d85f24b 2955 }
d3372da9 2956 sr = newsrchres(&dcnet, wfile, wnick);
2957 if(sr->peernick != NULL)
2958 free(sr->peernick);
2959 sr->peernick = swcsdup(wnick);
2960 sr->size = size;
2961 sr->slots = slots;
2962 free(wfile);
2963 free(wnick);
2964 if(myfn != NULL)
2965 getfnetnode(sr->fn = myfn);
d86b7a9f 2966 if(hash != NULL)
2967 sr->hash = hash;
d3372da9 2968 submitsrchres(sr);
2969 freesrchres(sr);
2970 }
2971 free(buf);
2972}
2973
2974static void hubread(struct socket *sk, struct fnetnode *fn)
2975{
2976 struct dchub *hub;
2977 char *newbuf;
2978 size_t datalen;
2979 char *p;
2980
2981 hub = (struct dchub *)fn->data;
2982 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
2983 return;
2984 if(hub->inbufdata > 500000) /* Discard possible malicious data */
2985 hub->inbufdata = 0;
2986 sizebuf2(hub->inbuf, hub->inbufdata + datalen, 1);
2987 memcpy(hub->inbuf + hub->inbufdata, newbuf, datalen);
2988 free(newbuf);
2989 p = hub->inbuf + hub->inbufdata;
2990 hub->inbufdata += datalen;
2991 while((datalen > 0) && ((p = memchr(p, '|', datalen)) != NULL))
2992 {
2993 *(p++) = 0;
2994 newqcmd(&hub->queue, hub->inbuf);
2995 memmove(hub->inbuf, p, hub->inbufdata -= p - hub->inbuf);
2996 datalen = hub->inbufdata;
2997 p = hub->inbuf;
2998 }
2999}
3000
3001static void huberr(struct socket *sk, int err, struct fnetnode *fn)
3002{
3003 killfnetnode(fn);
3004}
3005
3006static int hubsetnick(struct fnetnode *fn, wchar_t *newnick)
3007{
3008 struct dchub *hub;
3009 char *buf;
3010
3011 hub = fn->data;
1d85f24b 3012 if((buf = icwcstombs(newnick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
d3372da9 3013 return(1);
3014 if((strchr(buf, ' ') != NULL) || (strchr(buf, '|') != NULL) || (strchr(buf, '$') != NULL))
3015 {
3016 free(buf);
3017 return(1);
3018 }
3019 if(hub == NULL) /* Not yet connected */
3020 {
3021 free(buf);
3022 return(0);
3023 }
3024 if(hub->nativenick != NULL)
3025 free(hub->nativenick);
3026 hub->nativenick = buf;
3027 return(0);
3028}
3029
3030static struct dchub *newdchub(struct fnetnode *fn)
3031{
3032 struct dchub *new;
1c4b02cd 3033 wchar_t *emu;
1d85f24b 3034 wchar_t *wcharset;
3035 char *charset;
d3372da9 3036
3037 new = smalloc(sizeof(*new));
3038 memset(new, 0, sizeof(*new));
3039 fn->data = new;
1c4b02cd 3040 if(confgetint("dc", "dcppemu"))
3041 new->dcppemu = 1;
3042 if((emu = wpfind(fn->args, L"dcppemu")) != NULL)
3043 {
3044 if(*emu == L'y')
3045 new->dcppemu = 1;
3046 if(*emu == L'n')
3047 new->dcppemu = 0;
3048 }
1d85f24b 3049 charset = NULL;
3050 if((wcharset = wpfind(fn->args, L"charset")) != NULL)
3051 {
3052 if((charset = icwcstombs(wcharset, "US-ASCII")) != NULL)
3053 {
3054 if(!havecharset(charset))
3055 {
3056 free(charset);
3057 charset = NULL;
3058 }
3059 }
3060 }
3061 if(charset != NULL)
3062 new->charset = charset;
3063 else
3064 new->charset = sstrdup(DCCHARSET);
d3372da9 3065 if(hubsetnick(fn, fn->mynick))
3066 fnetsetnick(fn, L"DoldaConnectUser-IN");
3067 /* IN as in Invalid Nick */
3068 return(new);
3069}
3070
3071static struct dcpeer *newdcpeer(struct socket *sk)
3072{
3073 struct dcpeer *new;
3074
3075 new = smalloc(sizeof(*new));
3076 memset(new, 0, sizeof(*new));
3077 new->transfer = NULL;
3078 getsock(sk);
3079 new->sk = sk;
1c4b02cd 3080 if(confgetint("dc", "dcppemu"))
3081 new->dcppemu = 1;
d3372da9 3082 new->next = peers;
3083 new->prev = NULL;
3084 if(peers != NULL)
3085 peers->prev = new;
3086 peers = new;
3087 numdcpeers++;
3088 return(new);
3089}
3090
3091static void freedcpeer(struct dcpeer *peer)
3092{
3093 int i;
3094 struct qcommand *qcmd;
3095
3096 peer->freeing = 1;
3097 if(peers == peer)
3098 peers = peer->next;
3099 if(peer->next != NULL)
3100 peer->next->prev = peer->prev;
3101 if(peer->prev != NULL)
3102 peer->prev->next = peer->next;
3103 if(peer->transfer != NULL)
3104 {
3105 if(peer->transfer->dir == TRNSD_UP)
3106 peer->transfer->close = 1;
3107 if(peer->transfer->dir == TRNSD_DOWN)
3108 resettransfer(peer->transfer);
3109 transferdetach(peer->transfer);
3110 }
1e9d82b1 3111 if(peer->timeout != NULL)
3112 canceltimer(peer->timeout);
cab0b442 3113 if(peer->sk->data == peer)
3114 peer->sk->data = NULL;
3115 peer->sk->readcb = NULL;
3116 peer->sk->writecb = NULL;
3117 peer->sk->errcb = NULL;
d3372da9 3118 putsock(peer->sk);
3119 endcompress(peer);
3120 if(peer->supports != NULL)
3121 {
3122 for(i = 0; peer->supports[i] != NULL; i++)
3123 free(peer->supports[i]);
3124 free(peer->supports);
3125 }
d3372da9 3126 if(peer->inbuf != NULL)
3127 free(peer->inbuf);
3128 if(peer->key != NULL)
3129 free(peer->key);
3130 if(peer->wcsname != NULL)
3131 free(peer->wcsname);
3132 if(peer->nativename != NULL)
3133 free(peer->nativename);
1d85f24b 3134 if(peer->charset != NULL)
3135 free(peer->charset);
d3372da9 3136 if(peer->fn != NULL)
3137 putfnetnode(peer->fn);
3138 while((qcmd = ulqcmd(&peer->queue)) != NULL)
3139 freeqcmd(qcmd);
3140 free(peer);
3141 numdcpeers--;
3142}
3143
ffa81d5f 3144static void hubconnect(struct fnetnode *fn, struct socket *sk)
d3372da9 3145{
ffa81d5f
FT		 3146 struct dchub *hub;
3147
3148 sk->readcb = (void (*)(struct socket *, void *))hubread;
3149 sk->errcb = (void (*)(struct socket *, int, void *))huberr;
3150 fn->data = hub = newdchub(fn);
3151 sk->data = fn;
3152 getsock(hub->sk = sk);
d3372da9 3153 return;
3154}
3155
3156static void hubdestroy(struct fnetnode *fn)
3157{
08b74f8c 3158 int i;
d3372da9 3159 struct dchub *hub;
3160 struct qcommand *qcmd;
3161
3162 hub = (struct dchub *)fn->data;
ffa81d5f 3163 putsock(hub->sk);
d3372da9 3164 while((qcmd = ulqcmd(&hub->queue)) != NULL)
3165 freeqcmd(qcmd);
08b74f8c
FT		 3166 if(hub->supports != NULL)
3167 {
3168 for(i = 0; hub->supports[i] != NULL; i++)
3169 free(hub->supports[i]);
3170 free(hub->supports);
3171 }
d3372da9 3172 if(hub->nativename != NULL)
3173 free(hub->nativename);
3174 if(hub->nativenick != NULL)
3175 free(hub->nativenick);
1d85f24b 3176 if(hub->charset != NULL)
3177 free(hub->charset);
d3372da9 3178 if(hub->inbuf != NULL)
3179 free(hub->inbuf);
3180 free(hub);
3181}
3182
ffa81d5f
FT		 3183static void hubkill(struct fnetnode *fn)
3184{
3185 struct dchub *hub;
3186
3187 hub = (struct dchub *)fn->data;
3188 hub->sk->close = 1;
3189}
3190
d3372da9 3191static wchar_t *dcbasename(wchar_t *filename)
3192{
3193 wchar_t *ret;
3194
3195 if((ret = wcsrchr(filename, L'\\')) != NULL)
3196 return(ret + 1);
3197 return(filename);
3198}
3199
3200static struct transferiface dctransfer =
3201{
3202 .detach = (void (*)(struct transfer *, void *))dctransdetach,
3203 .gotdata = (void (*)(struct transfer *, void *))dctransgotdata,
3204 .endofdata = (void (*)(struct transfer *, void *))dctransendofdata,
3205 .wantdata = (void (*)(struct transfer *, void *))dcwantdata
3206};
3207
3208static struct fnet dcnet =
3209{
3210 .name = L"dc",
3211 .connect = hubconnect,
3212 .destroy = hubdestroy,
ffa81d5f 3213 .kill = hubkill,
d3372da9 3214 .setnick = hubsetnick,
3215 .reqconn = hubreqconn,
3216 .sendchat = hubsendchat,
3217 .search = hubsearch,
3218 .filebasename = dcbasename
3219};
3220
cab0b442 3221static void peerread(struct socket *sk, struct dcpeer *peer)
d3372da9 3222{
cab0b442 3223 char *newbuf, *p;
5ec60e42 3224 size_t datalen;
cab0b442 3225 struct command *cmd;
5ec60e42 3226
d3372da9 3227 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
cab0b442 3228 return;
d3372da9 3229 sizebuf2(peer->inbuf, peer->inbufdata + datalen, 1);
3230 memcpy(peer->inbuf + peer->inbufdata, newbuf, datalen);
3231 free(newbuf);
d3372da9 3232 peer->inbufdata += datalen;
9a2d6cb8 3233 if(peer->state == PEER_CMD)
d3372da9 3234 {
cab0b442 3235 p = peer->inbuf;
3236 while((peer->inbufdata > 0) && (p = memchr(peer->inbuf, '|', peer->inbufdata)) != NULL)
3237 {
3238 *(p++) = 0;
3239 newqcmd(&peer->queue, peer->inbuf);
3240 for(cmd = peercmds; cmd->handler != NULL; cmd++)
3241 {
3242 if(!memcmp(peer->inbuf, cmd->name, strlen(cmd->name)) && ((peer->inbuf[strlen(cmd->name)] == ' ') || (peer->inbuf[strlen(cmd->name)] == '|')))
3243 break;
3244 }
3245 memmove(peer->inbuf, p, peer->inbufdata -= p - peer->inbuf);
3246 if(cmd->stop)
3247 {
3248 peer->state = PEER_STOP;
3249 break;
3250 }
3251 }
9a2d6cb8 3252 } else if(peer->state == PEER_TTHL) {
3253 handletthl(peer);
d3372da9 3254 }
3255}
3256
cab0b442 3257static void peererror(struct socket *sk, int err, struct dcpeer *peer)
d3372da9 3258{
3259 freedcpeer(peer);
3260}
3261
cab0b442 3262static void peerconnect(struct socket *sk, int err, struct fnetnode *fn)
d3372da9 3263{
3264 struct dcpeer *peer;
1c4b02cd 3265 struct dchub *hub;
d3372da9 3266
3267 if(err != 0)
3268 {
3269 putfnetnode(fn);
ff625695 3270 putsock(sk);
cab0b442 3271 return;
d3372da9 3272 }
1c4b02cd 3273 hub = fn->data;
d3372da9 3274 peer = newdcpeer(sk);
3275 peer->fn = fn;
3276 peer->accepted = 0;
1c4b02cd 3277 peer->dcppemu = hub->dcppemu;
cab0b442 3278 sk->readcb = (void (*)(struct socket *, void *))peerread;
3279 sk->errcb = (void (*)(struct socket *, int, void *))peererror;
3280 sk->data = peer;
d3372da9 3281 socksettos(sk, confgetint("fnet", "fnptos"));
d3372da9 3282 putsock(sk);
1e9d82b1 3283 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
9a2d6cb8 3284 sendmynick(peer);
3285 sendpeerlock(peer);
d3372da9 3286}
3287
cab0b442 3288static void peeraccept(struct socket *sk, struct socket *newsk, void *data)
d3372da9 3289{
3290 struct dcpeer *peer;
3291
3292 peer = newdcpeer(newsk);
3293 peer->accepted = 1;
cab0b442 3294 newsk->readcb = (void (*)(struct socket *, void *))peerread;
3295 newsk->errcb = (void (*)(struct socket *, int, void *))peererror;
3296 newsk->data = peer;
d3372da9 3297 socksettos(newsk, confgetint("fnet", "fnptos"));
1e9d82b1 3298 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 3299}
3300
3301static void updatehmlist(void)
3302{
3303 int i, lev, ic, ret;
3304 struct sharecache *node;
3305 char *buf, *buf2, numbuf[32];
3306 size_t bufsize, bufdata;
3307 int fd, ibuf;
3308
3309 bufdata = 0;
3310 buf = smalloc(bufsize = 65536);
3311 node = shareroot->child;
3312 lev = 0;
3313 while(1)
3314 {
3315 ic = 0;
1d85f24b 3316 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 3317 if((buf2 = icwcstombs(node->name, DCCHARSET)) != NULL)
3318 {
3319 for(i = 0; i < lev; i++)
3320 addtobuf(buf, 9);
3321 bufcat(buf, buf2, strlen(buf2));
3322 free(buf2);
3323 if(node->f.b.type == FILE_REG)
3324 {
3325 addtobuf(buf, '|');
dcf7a1a2 3326 sprintf(numbuf, "%ji", (intmax_t)node->size);
d3372da9 3327 bufcat(buf, numbuf, strlen(numbuf));
3328 }
3329 addtobuf(buf, 13);
3330 addtobuf(buf, 10);
3331 } else {
3332 ic = 1;
3333 }
3334 if((node->child != NULL) && !ic)
3335 {
3336 lev++;
3337 node = node->child;
3338 } else if(node->next != NULL) {
3339 node = node->next;
3340 } else {
3341 while(node->next == NULL)
3342 {
3343 lev--;
3344 node = node->parent;
3345 if(node == shareroot)
3346 break;
3347 }
3348 if(node == shareroot)
3349 break;
3350 node = node->next;
3351 }
3352 }
3353 if(hmlistname != NULL)
3354 {
3355 unlink(hmlistname);
3356 free(hmlistname);
3357 }
3358 hmlistname = sstrdup("/tmp/dc-filelist-hm-XXXXXX");
3359 if((fd = mkstemp(hmlistname)) < 0)
3360 {
3361 flog(LOG_WARNING, "could not create HM file list tempfile: %s", strerror(errno));
3362 free(hmlistname);
3363 hmlistname = NULL;
3364 } else {
3365 /*
3366 * I do not want to implement a good Huffman encoder, and it's not
3367 * like Huffman encoding actually yields any impressive results
3368 * for DC file lists anyway, so I'll just output a bogus
3369 * tree. Implement a good encoder if you want to.
3370 */
3371 write(fd, "HE3\r\0", 5);
3372 write(fd, &bufdata, 4);
3373 ibuf = 256;
3374 write(fd, &ibuf, 2);
3375 ibuf = 8;
3376 for(i = 0; i < 256; i++)
3377 {
3378 write(fd, &i, 1);
3379 write(fd, &ibuf, 1);
3380 }
3381 for(i = 0; i < 256; i++)
3382 write(fd, &i, 1);
3383 for(buf2 = buf; bufdata > 0;)
3384 {
3385 if((ret = write(fd, buf2, bufdata)) < 0)
3386 {
3387 flog(LOG_WARNING, "could not write file list: %s", strerror(errno));
3388 break;
3389 }
3390 bufdata -= ret;
3391 buf2 += ret;
3392 }
3393 close(fd);
3394 }
3395 free(buf);
3396}
3397
3398static struct xmlent
3399{
3400 wchar_t c;
3401 wchar_t *ent;
3402} entities[] = {
3403 {L'&', L"&amp;"},
3404 {L'\"', L"&#34;"},
3405/* {L'\'', L"&quot;"}, Emulate DC++ escaping by omitting this. */
3406 {L'\0', NULL}
3407};
3408
3409static wchar_t *escapexml(wchar_t *src)
3410{
3411 static wchar_t *buf = NULL;;
3412 int ret, c;
3413 wchar_t nbuf[32];
3414 size_t bufsize, bufdata;
3415 struct xmlent *ent;
3416
3417 if(buf != NULL)
3418 free(buf);
3419 buf = NULL;
3420 bufsize = bufdata = 0;
3421 for(; *src != L'\0'; src++)
3422 {
3423 c = wctob(*src);
3424 if((c > 0) && (c < 32))
3425 {
3426 bufcat(buf, L"&#", 2);
3427 ret = swprintf(nbuf, (sizeof(nbuf) / sizeof(*nbuf)), L"%i", c);
3428 bufcat(buf, nbuf, ret);
3429 addtobuf(buf, L';');
3430 } else {
3431 for(ent = entities; ent->ent != NULL; ent++)
3432 {
3433 if(ent->c == *src)
3434 {
3435 bufcat(buf, ent->ent, wcslen(ent->ent));
3436 break;
3437 }
3438 }
3439 if(ent->ent == NULL)
3440 addtobuf(buf, *src);
3441 }
3442 }
3443 addtobuf(buf, L'\0');
3444 return(buf);
3445}
3446
3447static void updatexmllist(void)
3448{
3449 int i, fd, lev;
3450 FILE *fs;
3451 char cidbuf[14], *namebuf;
3452 char *hashbuf;
3453 struct sharecache *node;
3454
3455 if(xmllistname != NULL)
3456 {
3457 unlink(xmllistname);
3458 free(xmllistname);
3459 }
3460 xmllistname = sstrdup("/tmp/dc-filelist-dcxml-XXXXXX");
3461 if((fd = mkstemp(xmllistname)) < 0)
3462 {
3463 flog(LOG_WARNING, "could not create XML file list tempfile: %s", strerror(errno));
3464 free(xmllistname);
3465 xmllistname = NULL;
3466 return;
3467 }
3468 if((fs = fdopen(fd, "w")) == NULL)
3469 {
3470 flog(LOG_WARNING, "could not fdopen XML list fd %i: %s", fd, strerror(errno));
3471 unlink(xmllistname);
3472 free(xmllistname);
3473 xmllistname = NULL;
3474 close(fd);
3475 return;
3476 }
3477 fprintf(fs, "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?>\r\n");
3478 for(i = 0; i < sizeof(cidbuf) - 1; i++)
3479 cidbuf[i] = (rand() % ('Z' - 'A' + 1)) + 'A';
3480 cidbuf[i] = 0;
1c4b02cd 3481 if(confgetint("dc", "dcppemu"))
3482 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"DC++ 0.674\">\r\n", cidbuf);
3483 else
3484 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"%s\">\r\n", cidbuf, "DoldaConnect" VERSION);
d3372da9 3485
3486 node = shareroot->child;
3487 lev = 0;
3488 while(1)
3489 {
3490 if((namebuf = icswcstombs(escapexml(node->name), "UTF-8", NULL)) != NULL)
3491 {
3492 for(i = 0; i < lev; i++)
3493 fputc('\t', fs);
3494 if(node->child != NULL)
3495 {
3496 fprintf(fs, "<Directory Name=\"%s\">\r\n", namebuf);
3497 node = node->child;
3498 lev++;
3499 continue;
3500 } else {
dcf7a1a2 3501 fprintf(fs, "<File Name=\"%s\" Size=\"%ji\"", namebuf, (intmax_t)node->size);
d3372da9 3502 if(node->f.b.hastth)
3503 {
3504 hashbuf = base32encode(node->hashtth, 24);
3505 fprintf(fs, " TTH=\"%.39s\"", hashbuf);
3506 free(hashbuf);
3507 }
3508 fprintf(fs, "/>\r\n");
3509 }
3510 while(node->next == NULL)
3511 {
3512 node = node->parent;
3513 if(node == shareroot)
3514 {
3515 break;
3516 } else {
3517 lev--;
3518 for(i = 0; i < lev; i++)
3519 fputc('\t', fs);
3520 fprintf(fs, "</Directory>\r\n");
3521 }
3522 }
3523 if(node == shareroot)
3524 break;
3525 node = node->next;
3526 }
3527 }
3528
1c4b02cd 3529 if(confgetint("dc", "dcppemu"))
3530 fprintf(fs, "</FileListing>");
3531 else
3532 fprintf(fs, "</FileListing>\r\n");
d3372da9 3533 fclose(fs);
3534}
3535
3536static void updatexmlbz2list(void)
3537{
3538 int err, fd;
3539 FILE *in;
3540 FILE *real;
3541 BZFILE *out;
3542 char buf[1024];
3543 size_t bufdata;
3544
3545 if(xmllistname == NULL)
3546 return;
3547 if((in = fopen(xmllistname, "r")) == NULL)
3548 {
3549 flog(LOG_WARNING, "could not open XML file list for bzipping: %s", strerror(errno));
3550 return;
3551 }
3552 if(xmlbz2listname != NULL)
3553 {
3554 unlink(xmlbz2listname);
3555 free(xmlbz2listname);
3556 }
3557 xmlbz2listname = sstrdup("/tmp/dc-filelist-dcxmlbz2-XXXXXX");
3558 if((fd = mkstemp(xmlbz2listname)) < 0)
3559 {
3560 flog(LOG_WARNING, "could not create bzipped XML file list tempfile: %s", strerror(errno));
3561 free(xmlbz2listname);
3562 xmlbz2listname = NULL;
3563 fclose(in);
3564 return;
3565 }
3566 if((real = fdopen(fd, "w")) == NULL)
3567 {
3568 flog(LOG_WARNING, "could not fdopen bzipped XML list fd %i: %s", fd, strerror(errno));
3569 close(fd);
3570 unlink(xmlbz2listname);
3571 free(xmlbz2listname);
3572 xmlbz2listname = NULL;
3573 fclose(in);
3574 return;
3575 }
3576 out = BZ2_bzWriteOpen(&err, real, 9, 0, 0);
3577 if(err != BZ_OK)
3578 {
3579 flog(LOG_WARNING, "could not open bzip2 stream from XML list");
3580 fclose(real);
3581 unlink(xmlbz2listname);
3582 free(xmlbz2listname);
3583 xmlbz2listname = NULL;
3584 fclose(in);
3585 return;
3586 }
3587 while(!feof(in))
3588 {
3589 bufdata = fread(buf, 1, sizeof(buf), in);
3590 BZ2_bzWrite(&err, out, buf, bufdata);
3591 }
3592 fclose(in);
3593 BZ2_bzWriteClose(&err, out, 0, NULL, NULL);
3594 fclose(real);
3595}
3596
6305c428 3597static void listtimercb(int cancelled, void *uudata)
3598{
3599 listwritetimer = NULL;
3600 if(!cancelled)
3601 updatelists(1);
3602}
3603
3604static void updatelists(int now)
d3372da9 3605{
000ca725 3606 if((hmlistname == NULL) || (xmllistname == NULL) || (xmlbz2listname == NULL))
3607 now = 1;
6305c428 3608 if(!now)
3609 {
3610 if(listwritetimer == NULL)
ddb3658e 3611 listwritetimer = timercallback(ntime() + confgetint("cli", "hashwritedelay"), listtimercb, NULL);
6305c428 3612 return;
3613 }
3614 if(listwritetimer != NULL)
3615 canceltimer(listwritetimer);
d3372da9 3616 updatehmlist();
3617 updatexmllist();
3618 updatexmlbz2list();
6305c428 3619}
3620
3621static int shareupdate(unsigned long long uusharesize, void *data)
3622{
3623 updatelists(0);
d3372da9 3624 return(0);
3625}
3626
7395a37f
FT		 3627static char *quotestr(char *str)
3628{
3629 unsigned char *buf;
3630 unsigned char *p;
3631 size_t bufsize, bufdata;
3632 wchar_t *wbuf;
3633 static char *enc = NULL;
3634 size_t encsize, encdata;
3635
3636 buf = NULL;
3637 bufsize = bufdata = 0;
3638 for(p = (unsigned char *)str; *p; p++)
3639 {
3640 if(*p == '\b')
3641 bufcat(buf, "\\b", 2);
3642 else if(*p == '\t')
3643 bufcat(buf, "\\t", 2);
3644 else if(*p == '\n')
3645 bufcat(buf, "\\n", 2);
3646 else if(*p == '\r')
3647 bufcat(buf, "\\r", 2);
3648 else if(*p == '\\')
3649 bufcat(buf, "\\\\", 2);
3650 else if(*p >= 32)
3651 addtobuf(buf, *p);
3652 else
3653 bprintf(buf, "\\x%02x", *p);
3654 }
3655 addtobuf(buf, 0);
3656 if(enc != NULL)
3657 free(enc);
3658 enc = NULL;
3659 if((wbuf = icmbstowcs((char *)buf, DCCHARSET)) != NULL)
3660 {
3661 enc = icwcstombs(wbuf, NULL);
3662 free(wbuf);
3663 }
3664 if(enc == NULL)
3665 {
3666 encsize = encdata = 0;
3667 for(p = buf; *p; p++) {
3668 if(*p < 128)
3669 addtobuf(enc, *p);
3670 else
3671 bprintf(buf, "\\x%x", *p);
3672 }
3673 }
3674 free(buf);
3675 return(enc);
3676}
3677
c1928259 3678static void logunimpl(char *list, char *cmd, char *args)
7395a37f
FT		 3679{
3680 FILE *log;
3681
3682 if((log = fopen("/tmp/dc-unimpl", "a")) == NULL)
3683 {
3684 flog(LOG_WARNING, "could not open unimpl log: %s", strerror(errno));
3685 return;
3686 }
c1928259
FT		 3687 fputs(list, log);
3688 fputc('\t', log);
7395a37f
FT		 3689 fputs(quotestr(cmd), log);
3690 if(args != NULL)
3691 {
3692 fputc('\t', log);
3693 fputs(quotestr(args), log);
3694 }
3695 fputc('\n', log);
3696 fclose(log);
3697}
3698
d3372da9 3699static void dispatchcommand(struct qcommand *qcmd, struct command *cmdlist, struct socket *sk, void *data)
3700{
3701 char *p;
3702 struct command *cmd;
3703
3704 if((p = strchr(qcmd->string, ' ')) != NULL)
3705 *(p++) = 0;
3706 for(cmd = cmdlist; cmd->handler != NULL; cmd++)
3707 {
3708 if(!strcmp(cmd->name, qcmd->string))
3709 break;
3710 }
3711 if(cmd->handler != NULL)
c1928259 3712 {
d3372da9 3713 cmd->handler(sk, data, qcmd->string, p);
c1928259
FT		 3714 } else if(confgetint("dc", "logunimpl")) {
3715 if(cmdlist == hubcmds)
3716 logunimpl("hub", qcmd->string, p);
3717 else if(cmdlist == peercmds)
3718 logunimpl("peer", qcmd->string, p);
3719 else
3720 logunimpl("other?!", qcmd->string, p);
3721 }
d3372da9 3722}
3723
3724static int run(void)
3725{
3726 struct fnetnode *fn, *nextfn;
3727 struct dchub *hub;
3728 struct dcpeer *peer, *nextpeer;
3729 struct qcommand *qcmd;
3730 int ret;
3731
3732 ret = 0;
3733 for(fn = fnetnodes; fn != NULL; fn = nextfn)
3734 {
3735 nextfn = fn->next;
3736 if(fn->fnet != &dcnet)
3737 continue;
3738 if(fn->data == NULL)
3739 continue;
3740 hub = (struct dchub *)fn->data;
3741 if((qcmd = ulqcmd(&hub->queue)) != NULL)
3742 {
3743 if(*qcmd->string == '$')
3744 {
ffa81d5f
FT		 3745 if((hub->sk != NULL) && (hub->sk->state == SOCK_EST))
3746 dispatchcommand(qcmd, hubcmds, hub->sk, fn);
d3372da9 3747 } else if(*qcmd->string != 0) {
ffa81d5f 3748 hubrecvchat(hub->sk, fn, NULL, qcmd->string);
d3372da9 3749 }
3750 freeqcmd(qcmd);
3751 ret = 1;
3752 break;
3753 }
3754 }
3755 for(peer = peers; peer != NULL; peer = nextpeer)
3756 {
3757 nextpeer = peer->next;
3758 if((qcmd = ulqcmd(&peer->queue)) != NULL)
3759 {
1e9d82b1 3760 if(peer->timeout != NULL)
3761 canceltimer(peer->timeout);
3762 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 3763 if(*qcmd->string == '$')
3764 dispatchcommand(qcmd, peercmds, peer->sk, peer);
3765 freeqcmd(qcmd);
3766 ret = 1;
3767 break;
3768 }
3769 }
3770 return(ret);
3771}
3772
3773static void preinit(int hup)
3774{
3775 if(hup)
3776 return;
3777 regfnet(&dcnet);
3778}
3779
3780static int updateudpport(struct configvar *var, void *uudata)
3781{
3782 struct sockaddr_in addr;
3783 struct socket *newsock;
3784
3785 memset(&addr, 0, sizeof(addr));
3786 addr.sin_family = AF_INET;
3787 addr.sin_port = htons(var->val.num);
3788 if((newsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3789 {
3790 flog(LOG_WARNING, "could not create new DC UDP socket, reverting to old: %s", strerror(errno));
3791 return(0);
3792 }
cab0b442 3793 newsock->readcb = udpread;
d3372da9 3794 if(udpsock != NULL)
3795 putsock(udpsock);
3796 udpsock = newsock;
3797 return(0);
3798}
3799
3800static int updatetcpport(struct configvar *var, void *uudata)
3801{
3802 struct sockaddr_in addr;
3803 struct socket *newsock;
3804
3805 memset(&addr, 0, sizeof(addr));
3806 addr.sin_family = AF_INET;
3807 addr.sin_port = htons(var->val.num);
3808 if((newsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3809 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3810 if(tcpsock != NULL)
3811 putsock(tcpsock);
3812 tcpsock = newsock;
3813 return(0);
3814}
3815
3816static int init(int hup)
3817{
3818 struct sockaddr_in addr;
3819
3820 if(!hup)
3821 {
3822 GCBREG(sharechangecb, shareupdate, NULL);
3823 if(udpsock != NULL)
3824 putsock(udpsock);
3825 if(tcpsock != NULL)
3826 putsock(tcpsock);
3827 addr.sin_family = AF_INET;
3828 memset(&addr.sin_addr, 0, sizeof(addr.sin_addr));
3829 addr.sin_port = htons(confgetint("dc", "udpport"));
3830 if((udpsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3831 {
3832 flog(LOG_CRIT, "could not create DC UDP socket: %s", strerror(errno));
3833 return(1);
3834 }
cab0b442 3835 udpsock->readcb = udpread;
d3372da9 3836 addr.sin_port = htons(confgetint("dc", "tcpport"));
3837 if((tcpsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3838 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3839 CBREG(confgetvar("dc", "udpport"), conf_update, updateudpport, NULL, NULL);
3840 CBREG(confgetvar("dc", "tcpport"), conf_update, updatetcpport, NULL, NULL);
3841 CBREG(confgetvar("net", "mode"), conf_update, updatetcpport, NULL, NULL);
3842 }
3843 return(0);
3844}
3845
3846static void terminate(void)
3847{
3848 if(hmlistname != NULL)
3849 {
3850 unlink(hmlistname);
3851 free(hmlistname);
3852 }
3853 if(xmllistname != NULL)
3854 {
3855 unlink(xmllistname);
3856 free(xmllistname);
3857 }
3858 if(xmlbz2listname != NULL)
3859 {
3860 unlink(xmlbz2listname);
3861 free(xmlbz2listname);
3862 }
3863}
3864
3865static struct configvar myvars[] =
3866{
d9f89ef5 3867 /** Specifies the share description reported to other DC users. */
d3372da9 3868 {CONF_VAR_STRING, "desc", {.str = L""}},
d9f89ef5 3869 /** Specifies the speed reported to other DC users. Normal values
3870 * are 28.8Kbps, 33.6Kbps, 56Kbps, Satellite, ISDN, DSL, Cable,
3871 * LAN(T1) or LAN(T3)*/
d3372da9 3872 {CONF_VAR_STRING, "speedstring", {.str = L"LAN(T1)"}},
d9f89ef5 3873 /** The e-mail address to report to other DC users. */
d3372da9 3874 {CONF_VAR_STRING, "email", {.str = L"spam@spam.org"}},
d9f89ef5 3875 /** Specifies a specific UDP port to use for DC search results. If
3876 * left unspecified, a port is allocated dynamically. Useful for
3877 * NAT routers (see also the net.visibleipv4 address for those
3878 * cases). */
d3372da9 3879 {CONF_VAR_INT, "udpport", {.num = 0}},
d9f89ef5 3880 /** Specifies a specific TCP port to use for DC peer
3881 * connections. If left unspecified, a port is allocated
3882 * dynamically. Useful for NAT routers (see also the
3883 * net.visibleipv4 address for those cases). */
d3372da9 3884 {CONF_VAR_INT, "tcpport", {.num = 0}},
d9f89ef5 3885 /** If set to true, doldacond will do its best to emulate DC++
3886 * (currently v0.674). This should be left off if at all possible,
3887 * since turning it on will violate the rules of most hubs and
3888 * thus give hub owners an actual reason to kick you if it is
3889 * detected. It might be needed for some of the more bone-headed
3890 * hub owners, though. Note that DC++ emulation can also be turned
3891 * on or off for individual hubs, overriding this setting. */
1c4b02cd 3892 {CONF_VAR_BOOL, "dcppemu", {.num = 0}},
7395a37f
FT		 3893 /** Use for debugging. If set to true, doldacond will log all
3894 * unknown commands it receives, and their arguments, to
3895 * /tmp/dc-unimpl. */
3896 {CONF_VAR_BOOL, "logunimpl", {.num = 0}},
4b544330
FT		 3897 /** If set to true, doldacond will hide its support for deflate
3898 * compression of transfers from other clients, so that they will
3899 * not request compressed uploads. Compressed transfers may
3900 * consume a non-trivial amount of CPU time on slower machines. */
3901 {CONF_VAR_BOOL, "hidedeflate", {.num = 0}},
d3372da9 3902 {CONF_VAR_END}
3903};
3904
3905static struct module me =
3906{
3907 .conf =
3908 {
3909 .vars = myvars
3910 },
3911 .preinit = preinit,
3912 .init = init,
3913 .run = run,
3914 .terminate = terminate,
3915 .name = "dc"
3916};
3917
3918MODULE(me)
Dolda Connect