Dolda2000 GitWeb / doldaconnect.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Unmarked the applet and Pidgin plugin as experimental.
[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
d3372da9 62#define PEER_CMD 0
9a2d6cb8 63#define PEER_STOP 1
64#define PEER_TRNS 2
65#define PEER_SYNC 3
66#define PEER_TTHL 4
d3372da9 67
68#define CPRS_NONE 0
69#define CPRS_ZLIB 1
70
71struct command
72{
73 char *name;
74 void (*handler)(struct socket *sk, void *data, char *cmd, char *args);
9a2d6cb8 75 int stop;
8cb2d75b 76 int limit;
d3372da9 77};
78
79struct qcommand
80{
81 struct qcommand *next;
82 char *string;
83};
84
c256f071
FT		 85struct qcmdqueue
86{
87 struct qcommand *f, *l;
8cb2d75b 88 int size;
c256f071
FT		 89};
90
d3372da9 91struct dchub
92{
ffa81d5f 93 struct socket *sk;
d3372da9 94 char *inbuf;
95 size_t inbufdata, inbufsize;
c256f071 96 struct qcmdqueue queue;
1c4b02cd 97 int extended, dcppemu;
1d85f24b 98 char *charset;
d3372da9 99 char *nativename;
100 char *nativenick;
08b74f8c 101 char **supports;
d3372da9 102};
103
104struct dcexppeer
105{
106 struct dcexppeer *next, *prev;
107 char *nick;
108 struct fnetnode *fn;
109 struct timer *expire;
110};
111
112struct dcpeer
113{
114 struct dcpeer *next, *prev;
115 struct socket *sk;
116 struct fnetnode *fn;
117 char *inbuf;
118 size_t inbufdata, inbufsize;
dcf7a1a2 119 off_t curread, totalsize;
2bf4942d 120 int close;
1e9d82b1 121 struct timer *timeout;
c256f071 122 struct qcmdqueue queue;
d3372da9 123 struct transfer *transfer;
124 int state;
125 int ptclose; /* Close after transfer is complete */
126 int accepted; /* If false, we connected, otherwise, we accepted */
1c4b02cd 127 int extended, dcppemu;
d3372da9 128 int direction; /* Using the constants from transfer.h */
129 int compress;
df873cd0 130 int hascurpos, fetchingtthl, notthl;
9a2d6cb8 131 struct tigertreehash tth;
1d85f24b 132 char *charset;
d3372da9 133 void *cprsdata;
d3372da9 134 char *key;
135 char *nativename;
136 char **supports;
137 wchar_t *wcsname;
138};
139
140static struct fnet dcnet;
141static struct transferiface dctransfer;
142static struct socket *udpsock = NULL;
143static struct socket *tcpsock = NULL;
144static struct dcpeer *peers = NULL;
145int numdcpeers = 0;
146static struct dcexppeer *expected = NULL;
147static char *hmlistname = NULL;
148static char *xmllistname = NULL;
149static char *xmlbz2listname = NULL;
6305c428 150static struct timer *listwritetimer = NULL;
d3372da9 151
cab0b442 152static void peerconnect(struct socket *sk, int err, struct fnetnode *fn);
d3372da9 153static void freedcpeer(struct dcpeer *peer);
cab0b442 154static void transread(struct socket *sk, struct dcpeer *peer);
155static void transerr(struct socket *sk, int err, struct dcpeer *peer);
156static void transwrite(struct socket *sk, struct dcpeer *peer);
d3372da9 157static void updatehmlist(void);
158static void updatexmllist(void);
159static void updatexmlbz2list(void);
9a2d6cb8 160static void requestfile(struct dcpeer *peer);
6305c428 161static void updatelists(int now);
d3372da9 162
163static int reservedchar(unsigned char c)
164{
165 return((c == 0) || (c == 5) || (c == 124) || (c == 96) || (c == 126) || (c == 36));
166}
167
168/* Oh, how I despise having to do this... */
169static char *dcmakekey(char *lock)
170{
171 int i, len, offset;
172 char *buf, *key;
173 char save;
174
175 buf = smalloc(strlen(lock));
176 save = 5;
177 len = 0;
178 for(i = 0; lock[i]; i++)
179 {
180 buf[i] = lock[i] ^ save;
181 buf[i] = ((buf[i] & 0x0F) << 4) | ((buf[i] & 0xF0) >> 4);
182 save = lock[i];
183 if((i != 0) && reservedchar(buf[i]))
184 len += 10;
185 else
186 len++;
187 }
188 buf[0] ^= buf[i - 1];
189 if(reservedchar(buf[0]))
190 len += 10;
191 else
192 len++;
193 key = smalloc(len + 1);
194 offset = 0;
195 for(i = 0; lock[i] != 0; i++)
196 {
197 if(reservedchar(buf[i]))
198 offset += sprintf(key + offset, "/%%DCN%03i%%/", buf[i]);
199 else
200 key[offset++] = buf[i];
201 }
202 key[offset] = 0;
203 free(buf);
204 return(key);
205}
206
040118de 207static wchar_t *nmdc2path(char *nmdc, char *charset)
9a2d6cb8 208{
040118de 209 wchar_t *ret, *p;
9a2d6cb8 210
040118de
FT		 211 if((ret = icmbstowcs(nmdc, charset)) == NULL)
212 return(NULL);
213 for(p = ret; *p != L'\0'; p++) {
214 if(*p == L'\\')
215 *p = L'/';
9a2d6cb8 216 }
9a2d6cb8 217 return(ret);
218}
219
040118de
FT		 220static char *path2nmdc(wchar_t *path, char *charset)
221{
222 char *ret, *p;
223
224 if((ret = icwcstombs(path, charset)) == NULL)
225 return(NULL);
226 for(p = ret; *p; p++) {
227 if(*p == '/')
228 *p = '\\';
229 }
230 return(ret);
231}
232
233static wchar_t *adc2path(char *adc)
234{
235 return(icmbstowcs(adc, "UTF-8"));
236}
237
238static char *path2adc(wchar_t *path)
239{
240 return(icwcstombs(path, "UTF-8"));
241}
242
9a2d6cb8 243static int isdchash(struct hash *hash)
244{
245 if(wcscmp(hash->algo, L"TTH"))
246 return(0);
247 if(hash->len != 24)
248 return(0);
249 return(1);
250}
251
08b74f8c
FT		 252/*
253 * Uncomment when used!
254
255static int hubsupports(struct dchub *hub, char *cap)
256{
257 char **p;
258
259 if(hub->supports == NULL)
260 return(0);
261 for(p = hub->supports; *p != NULL; p++)
262 {
263 if(!strcasecmp(*p, cap))
264 return(1);
265 }
266 return(0);
267}
268*/
269
9a2d6cb8 270static int supports(struct dcpeer *peer, char *cap)
271{
272 char **p;
273
274 if(peer->supports == NULL)
275 return(0);
276 for(p = peer->supports; *p != NULL; p++)
277 {
278 if(!strcasecmp(*p, cap))
279 return(1);
280 }
281 return(0);
282}
283
d3372da9 284static void endcompress(struct dcpeer *peer)
285{
286 if(peer->compress == CPRS_ZLIB)
287 {
288 deflateEnd(peer->cprsdata);
289 free(peer->cprsdata);
290 }
291 peer->compress = CPRS_NONE;
292}
293
294static void initcompress(struct dcpeer *peer, int algo)
295{
296 int ret;
297
298 endcompress(peer);
299 peer->compress = algo;
300 if(algo == CPRS_ZLIB)
301 {
302 peer->cprsdata = smalloc(sizeof(z_stream));
303 memset(peer->cprsdata, 0, sizeof(z_stream));
304 if((ret = deflateInit(peer->cprsdata, 3)) != Z_OK)
305 {
306 flog(LOG_CRIT, "Aiya! zlib refuses to init (%i)!", ret);
307 abort();
308 }
309 }
310}
311
312static void unquote(wchar_t *in)
313{
314 wchar_t *p, *p2, nc;
315
316 for(p = in; *p != L'\0'; p++)
317 {
318 if(*p == L'&')
319 {
320 for(p2 = p + 1; (*p2 != L'\0') && (*p2 != L';') && (*p2 != L'&'); p2++);
321 if(*p2 == L'&')
322 continue;
323 if(*p2 == L'\0')
324 return;
325 *p2 = L'\0';
326 nc = L'\0';
327 if(!wcscmp(p + 1, L"amp"))
328 {
329 nc = L'&';
330 } else if(p[1] == L'#') {
331 nc = ucptowc(wcstol(p + 2, NULL, 10));
332 }
333 if(nc == L'\0')
334 {
335 *p2 = L';';
336 p = p2;
337 continue;
338 }
339 *p = nc;
340 memmove(p + 1, p2 + 1, (wcslen(p2 + 1) + 1) * sizeof(wchar_t));
341 }
342 }
343}
344
345static void freeexppeer(struct dcexppeer *ep)
346{
347 if(ep->next != NULL)
348 ep->next->prev = ep->prev;
349 if(ep->prev != NULL)
350 ep->prev->next = ep->next;
351 if(ep == expected)
352 expected = ep->next;
353 free(ep->nick);
354 putfnetnode(ep->fn);
355 if(ep->expire != NULL)
356 canceltimer(ep->expire);
357 free(ep);
358}
359
360static void exppeerexpire(int cancelled, struct dcexppeer *ep)
361{
362 ep->expire = NULL;
363 if(!cancelled)
364 freeexppeer(ep);
365}
366
367static struct dcexppeer *expectpeer(char *nick, struct fnetnode *fn)
368{
369 struct dcexppeer *ep;
370
371 ep = smalloc(sizeof(*ep));
372 ep->nick = sstrdup(nick);
373 getfnetnode(ep->fn = fn);
374 ep->expire = timercallback(ntime() + 300, (void (*)(int, void *))exppeerexpire, ep);
375 ep->next = expected;
376 ep->prev = NULL;
377 if(expected != NULL)
378 expected->prev = ep;
379 expected = ep;
380 return(ep);
381}
382
c256f071 383static struct qcommand *newqcmd(struct qcmdqueue *queue, char *string)
d3372da9 384{
385 struct qcommand *new;
386
d3372da9 387 new = smalloc(sizeof(*new));
388 new->string = sstrdup(string);
c256f071
FT		 389 new->next = NULL;
390 if(queue->l == NULL)
391 queue->f = new;
392 else
393 queue->l->next = new;
394 queue->l = new;
8cb2d75b 395 queue->size++;
d3372da9 396 return(new);
397}
398
c256f071 399static struct qcommand *ulqcmd(struct qcmdqueue *queue)
d3372da9 400{
401 struct qcommand *qcmd;
402
c256f071 403 if((qcmd = queue->f) == NULL)
d3372da9 404 return(NULL);
c256f071
FT		 405 if((queue->f = qcmd->next) == NULL)
406 queue->l = NULL;
8cb2d75b 407 queue->size--;
d3372da9 408 return(qcmd);
409}
410
411static void freeqcmd(struct qcommand *qcmd)
412{
413 free(qcmd->string);
414 free(qcmd);
415}
416
417static void hubrecvchat(struct socket *sk, struct fnetnode *fn, char *from, char *string)
418{
419 wchar_t *chat, *wfrom, *wpeer;
420 char *p, *end;
421 struct fnetpeer *peer;
1d85f24b 422 struct dchub *hub;
d3372da9 423
1d85f24b 424 hub = fn->data;
d3372da9 425 end = string + strlen(string);
426 while((p = strchr(string, 13)) != NULL)
427 memmove(p, p + 1, (end-- - p));
428 if(from != NULL)
429 {
430 if((strlen(string) > strlen(from) + 2) && (*string == '<') && !memcmp(string + 1, from, strlen(from)) && (*(string + strlen(from) + 1) == '>'))
431 string += strlen(from) + 2;
1d85f24b 432 if((wfrom = icmbstowcs(from, hub->charset)) == NULL)
d3372da9 433 return;
434 wpeer = swcsdup(wfrom);
435 } else {
436 wfrom = NULL;
437 wpeer = NULL;
438 if(*string == '<')
439 {
440 for(p = string + 1; *p; p++)
441 {
442 if((*p == ' ') || (*p == '>'))
443 break;
444 }
445 if(*p == '>')
446 {
447 *(p++) = 0;
448 if(*p == ' ')
449 p++;
1d85f24b 450 if((wpeer = icmbstowcs(string + 1, hub->charset)) == NULL)
d3372da9 451 return;
452 string = p;
453 }
454 }
455 if(wpeer == NULL)
456 wpeer = swcsdup(L"");
457 }
1d85f24b 458 if((chat = icmbstowcs(string, hub->charset)) == NULL)
d3372da9 459 {
460 if(wfrom != NULL)
461 free(wfrom);
462 free(wpeer);
463 return;
464 }
465 unquote(chat);
466 if(wfrom != NULL)
467 {
468 if((peer = fnetfindpeer(fn, wfrom)) == NULL) /* Assume public chat */
469 fnethandlechat(fn, 1, wfrom, wpeer, chat);
470 else
471 fnethandlechat(fn, 0, wfrom, wpeer, chat);
472 } else {
473 fnethandlechat(fn, 1, L"", wpeer, chat);
474 }
475 if(wfrom != NULL)
476 free(wfrom);
477 free(wpeer);
478 free(chat);
479}
480
1e9d82b1 481static void peertimeout(int cancelled, struct dcpeer *peer)
482{
483 peer->timeout = NULL;
484 if(cancelled)
485 return;
486 freedcpeer(peer);
487}
488
d3372da9 489static void sendadc(struct socket *sk, char *arg)
490{
491 char *buf;
492 size_t bufsize, bufdata;
493
494 buf = NULL;
495 bufsize = bufdata = 0;
496 addtobuf(buf, ' ');
497 for(; *arg; arg++)
498 {
499 if(*arg == ' ')
500 {
501 bufcat(buf, "\\s", 2);
502 } else if(*arg == '\n') {
503 bufcat(buf, "\\n", 2);
504 } else if(*arg == '\\') {
505 bufcat(buf, "\\\\", 2);
506 } else {
507 addtobuf(buf, *arg);
508 }
509 }
510 sockqueue(sk, buf, bufdata);
511 free(buf);
512}
513
dcf7a1a2
FT		 514#if defined(__GNUC__)
515static void __attribute__ ((format (printf, 2, 3))) sendadcf(struct socket *sk, char *arg, ...)
516#else
517static void sendadcf(struct socket *sk, char *arg, ...)
518#endif
d3372da9 519{
520 char *buf;
521 va_list args;
522
523 va_start(args, arg);
524 buf = vsprintf2(arg, args);
525 va_end(args);
526 if(buf == NULL)
527 return;
528 sendadc(sk, buf);
529 free(buf);
530}
531
532static char **parseadc(char *args)
533{
534 char **retbuf;
535 size_t retbufsize, retbufdata;
536 char *buf;
537 size_t bufsize, bufdata;
538 int state;
539
540 retbuf = NULL;
541 buf = NULL;
542 retbufsize = retbufdata = bufsize = bufdata = 0;
543 state = 0;
544 while(state != 3)
545 {
546 switch(state)
547 {
548 case 0:
549 if(*args == 0)
550 state = 3;
551 else if(*args != ' ')
552 state = 1;
553 break;
554 case 1:
555 if((*args == ' ') || (*args == 0))
556 {
557 addtobuf(buf, 0);
558 addtobuf(retbuf, buf);
559 buf = NULL;
560 bufsize = bufdata = 0;
561 if(*args == 0)
562 state = 3;
563 } else if(*args == '\\') {
564 state = 2;
565 } else {
566 addtobuf(buf, *args);
567 }
568 args++;
569 break;
570 case 2:
571 if(*args == 0)
572 {
573 if(buf != NULL)
574 free(buf);
575 addtobuf(retbuf, NULL);
576 freeparr(retbuf);
577 return(NULL);
f24d5cfb 578 } else if((*args == 's') || (*args == ' ')) {
d3372da9 579 addtobuf(buf, ' ');
580 } else if(*args == 'n') {
581 addtobuf(buf, '\n');
582 } else if(*args == '\\') {
583 addtobuf(buf, '\\');
584 }
a478552c 585 args++;
d3372da9 586 state = 1;
a478552c 587 break;
d3372da9 588 }
589 }
590 if(buf != NULL)
591 free(buf);
592 addtobuf(retbuf, NULL);
593 return(retbuf);
594}
595
596/* Macros useful in command handlers */
597#define skipspace(s) ({if(((s) = strchr((s), ' ')) == NULL) return; else (s)++;})
598#define qstr(sk, str) sockqueue(sk, str, strlen(str))
599#define qstrf(sk, strandargs...) \
600do { \
601 char *__buf__; \
602 if((__buf__ = sprintf2(strandargs)) != NULL) { \
603 sockqueue(sk, __buf__, strlen(__buf__)); \
604 free(__buf__); \
605 } \
606} while(0)
607
608static char *tr(char *str, char *trans)
609{
610 char *p;
611
612 for(; *trans; trans += 2)
613 {
614 for(p = strchr(str, trans[0]); p != NULL; p = strchr(p, trans[0]))
615 *p = trans[1];
616 }
617 return(str);
618}
619
9a2d6cb8 620static char *getadcid(struct dcpeer *peer)
621{
622 char *buf;
623 char *ret;
d57f938a 624 int isfilelist;
9a2d6cb8 625
2a157d1a 626 isfilelist = 0;
d57f938a 627 if(!wcscmp(peer->transfer->path, L"files.xml") || !wcscmp(peer->transfer->path, L"files.xml.bz2") || !wcscmp(peer->transfer->path, L"MyList.DcLst"))
628 isfilelist = 1;
629 if(!isfilelist && (peer->transfer->hash != NULL) && isdchash(peer->transfer->hash) && supports(peer, "tthf"))
9a2d6cb8 630 {
631 buf = base32encode(peer->transfer->hash->buf, 24);
632 ret = sprintf2("TTH/%.39s", buf);
633 free(buf);
634 } else {
040118de 635 ret = path2adc(peer->transfer->path);
9a2d6cb8 636 }
637 return(ret);
638}
639
640
d3372da9 641static int trresumecb(struct transfer *transfer, wchar_t *cmd, wchar_t *arg, struct dcpeer *peer)
642{
643 if(!wcscmp(cmd, L"resume"))
644 {
645 if(arg == NULL)
646 {
647 flog(LOG_WARNING, "filter returned no position for \"resume\" on transfer %i", transfer->id);
648 freedcpeer(peer);
649 } else {
349c52a9 650 transfer->curpos = wcstoll(arg, NULL, 10);
9a2d6cb8 651 peer->hascurpos = 1;
652 requestfile(peer);
d3372da9 653 }
d3372da9 654 return(1);
655 }
656 return(0);
657}
658
9a2d6cb8 659static void sendmynick(struct dcpeer *peer)
d3372da9 660{
1d85f24b 661 struct fnetnode *fn;
d3372da9 662
1d85f24b 663 fn = peer->fn;
664 if(fn == NULL)
665 qstrf(peer->sk, "$MyNick %s|", icswcstombs(confgetstr("cli", "defnick"), peer->charset, "DoldaConnectUser-IN"));
9a2d6cb8 666 else
1d85f24b 667 qstrf(peer->sk, "$MyNick %s|", icswcstombs(fn->mynick, peer->charset, "DoldaConnectUser-IN"));
9a2d6cb8 668}
669
670static void sendpeerlock(struct dcpeer *peer)
671{
1c4b02cd 672 if(peer->dcppemu)
673 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DCPLUSPLUS0.674ABCABC|");
674 else
675 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DOLDA%sABCABCABC|", VERSION);
9a2d6cb8 676}
677
678static void sendsupports(struct dcpeer *peer)
679{
4b544330 680 if(peer->dcppemu) {
1c4b02cd 681 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG |");
4b544330
FT		 682 } else {
683 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF");
684 if(!confgetint("dc", "hidedeflate"))
685 qstr(peer->sk, " GetZBlock ZLIG");
686 qstr(peer->sk, "|");
687 }
9a2d6cb8 688}
689
690static void requestfile(struct dcpeer *peer)
691{
692 char *buf;
693
694 if(peer->transfer->size == -1)
d3372da9 695 {
1d85f24b 696 /* Use DCCHARSET for $Get paths until further researched... */
040118de 697 if((buf = path2nmdc(peer->transfer->path, DCCHARSET)) == NULL)
d3372da9 698 {
9a2d6cb8 699 transferseterror(peer->transfer, TRNSE_NOTFOUND);
2bf4942d 700 peer->close = 1;
d3372da9 701 return;
702 }
9a2d6cb8 703 /* The transfer will be restarted later from
704 * cmd_filelength when it detects that the sizes
705 * don't match. */
706 qstrf(peer->sk, "$Get %s$1|", buf);
040118de 707 free(buf);
9a2d6cb8 708 return;
d3372da9 709 }
9a2d6cb8 710 if((peer->transfer->hash == NULL) && !peer->notthl)
d3372da9 711 {
9a2d6cb8 712 if(supports(peer, "adcget") && supports(peer, "tthl"))
d3372da9 713 {
9a2d6cb8 714 qstr(peer->sk, "$ADCGET");
715 sendadc(peer->sk, "tthl");
716 if((buf = getadcid(peer)) == NULL)
d3372da9 717 {
9a2d6cb8 718 transferseterror(peer->transfer, TRNSE_NOTFOUND);
2bf4942d 719 peer->close = 1;
d3372da9 720 return;
721 }
9a2d6cb8 722 sendadc(peer->sk, buf);
723 free(buf);
724 sendadc(peer->sk, "0");
725 sendadc(peer->sk, "-1");
726 qstr(peer->sk, "|");
df873cd0 727 peer->fetchingtthl = 1;
9a2d6cb8 728 return;
729 }
730 }
731 if(!peer->hascurpos)
732 {
733 if(forkfilter(peer->transfer))
734 {
735 flog(LOG_WARNING, "could not fork filter for transfer %i: %s", peer->transfer->id, strerror(errno));
2bf4942d 736 peer->close = 1;
9a2d6cb8 737 return;
d3372da9 738 }
9a2d6cb8 739 CBREG(peer->transfer, trans_filterout, (int (*)(struct transfer *, wchar_t *, wchar_t *, void *))trresumecb, NULL, peer);
740 return;
741 }
742 if(supports(peer, "adcget"))
743 {
744 qstr(peer->sk, "$ADCGET");
745 sendadc(peer->sk, "file");
746 if((buf = getadcid(peer)) == NULL)
747 {
748 transferseterror(peer->transfer, TRNSE_NOTFOUND);
2bf4942d 749 peer->close = 1;
9a2d6cb8 750 return;
751 }
752 sendadc(peer->sk, buf);
753 free(buf);
dcf7a1a2
FT		 754 sendadcf(peer->sk, "%ji", (intmax_t)peer->transfer->curpos);
755 sendadcf(peer->sk, "%ji", (intmax_t)(peer->transfer->size - peer->transfer->curpos));
9a2d6cb8 756 qstr(peer->sk, "|");
757 } else if(supports(peer, "xmlbzlist")) {
040118de 758 if((buf = path2nmdc(peer->transfer->path, "UTF-8")) == NULL)
9a2d6cb8 759 {
760 transferseterror(peer->transfer, TRNSE_NOTFOUND);
2bf4942d 761 peer->close = 1;
9a2d6cb8 762 return;
763 }
dcf7a1a2 764 qstrf(peer->sk, "$UGetBlock %ji %ji %s|", (intmax_t)peer->transfer->curpos, (intmax_t)(peer->transfer->size - peer->transfer->curpos), buf);
040118de 765 free(buf);
d3372da9 766 } else {
1d85f24b 767 /* Use DCCHARSET for $Get paths until further researched... */
040118de 768 if((buf = path2nmdc(peer->transfer->path, DCCHARSET)) == NULL)
d3372da9 769 {
9a2d6cb8 770 transferseterror(peer->transfer, TRNSE_NOTFOUND);
2bf4942d 771 peer->close = 1;
9a2d6cb8 772 return;
d3372da9 773 }
dcf7a1a2 774 qstrf(peer->sk, "$Get %s$%ji|", buf, (intmax_t)peer->transfer->curpos + 1);
040118de 775 free(buf);
d3372da9 776 }
777}
778
779static void sendmyinfo(struct socket *sk, struct fnetnode *fn)
780{
781 struct dchub *hub;
782 char *buf;
783 struct fnetnode *cfn;
69757b8c 784 int hn1, hn2, hn3;
d3372da9 785
786 hub = fn->data;
787 qstrf(sk, "$MyINFO $ALL %s ", hub->nativenick);
1d85f24b 788 buf = tr(icswcstombs(confgetstr("dc", "desc"), hub->charset, "Charset_conv_failure"), "$_|_");
d3372da9 789 qstrf(sk, "%s", buf);
69757b8c 790 hn1 = hn2 = hn3 = 0;
d3372da9 791 for(cfn = fnetnodes; cfn != NULL; cfn = cfn->next)
792 {
793 if((cfn->state == FNN_EST) || (cfn->state == FNN_HS))
69757b8c 794 {
795 if(cfn->regstatus == FNNS_OP)
796 hn3++;
797 else if(cfn->regstatus == FNNS_REG)
798 hn2++;
799 else
800 hn1++;
801 }
d3372da9 802 }
69757b8c 803 qstrf(sk, "<%s V:%s,M:%c,H:%i/%i/%i,S:%i>",
1c4b02cd 804 (hub->dcppemu)?"++":"Dolda",
805 (hub->dcppemu)?"0.674":VERSION,
d3372da9 806 (tcpsock == NULL)?'P':'A',
69757b8c 807 hn1, hn2, hn3,
d3372da9 808 confgetint("transfer", "slots")
809 );
810 qstrf(sk, "$ $");
1d85f24b 811 buf = tr(icswcstombs(confgetstr("dc", "speedstring"), hub->charset, "Charset_conv_failure"), "$_|_");
d3372da9 812 qstrf(sk, "%s\x01$", buf);
1d85f24b 813 buf = tr(icswcstombs(confgetstr("dc", "email"), hub->charset, "Charset_conv_failure"), "$_|_");
d3372da9 814 qstrf(sk, "%s$", buf);
815 qstrf(sk, "%llu$|", sharesize);
816}
817
818static void hubhandleaction(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
819{
820 struct dchub *hub;
821
822 hub = fn->data;
823 if(!strcmp(cmd, "$Lock"))
824 {
825 qstrf(sk, "$ValidateNick %s|", hub->nativenick);
826 } else if(!strcmp(cmd, "$Hello")) {
827 if(fn->state == FNN_HS)
828 {
829 qstrf(sk, "$Version 1,0091|");
830 qstrf(sk, "$GetNickList|");
831 sendmyinfo(sk, fn);
832 fnetsetstate(fn, FNN_EST);
833 } else {
834 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
835 }
836 }
837}
838
839static void cmd_lock(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
840{
841 struct dchub *hub;
842 char *key;
843 char *p;
844
845 hub = fn->data;
846 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
847 hub->extended = 1;
848 if((p = strchr(args, ' ')) != NULL)
849 *(p++) = 0;
850 if(hub->extended)
851 {
4b544330 852 if(hub->dcppemu) {
1c4b02cd 853 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock |");
4b544330
FT		 854 } else {
855 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch");
856 if(!confgetint("dc", "hidedeflate"))
857 qstr(sk, " GetZBlock");
858 qstr(sk, "|");
859 }
d3372da9 860 }
861 key = dcmakekey(args);
862 qstrf(sk, "$Key %s|", key);
863 free(key);
864 hubhandleaction(sk, fn, cmd, args);
865}
866
867static void cmd_hubname(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
868{
869 wchar_t *buf;
870 struct dchub *hub;
871
872 hub = fn->data;
873 if(hub->nativename == NULL)
874 free(hub->nativename);
875 hub->nativename = sstrdup(args);
1d85f24b 876 buf = icmbstowcs(args, hub->charset);
d3372da9 877 fnetsetname(fn, (buf == NULL)?L"Hubname conv error":buf);
878 if(buf != NULL)
879 free(buf);
880 hubhandleaction(sk, fn, cmd, args);
881}
882
883static void cmd_hello(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
884{
885 wchar_t *nick;
886 struct dchub *hub;
887
888 hub = fn->data;
1d85f24b 889 if((nick = icmbstowcs(args, hub->charset)) == NULL)
d3372da9 890 return;
891 if(strcmp(args, hub->nativenick) && (fnetfindpeer(fn, nick) == NULL))
892 fnetaddpeer(fn, nick, nick);
893 free(nick);
894 hubhandleaction(sk, fn, cmd, args);
895}
896
897static void cmd_quit(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
898{
899 wchar_t *nick;
900 struct fnetpeer *peer;
901 struct dchub *hub;
902
903 hub = fn->data;
1d85f24b 904 if((nick = icmbstowcs(args, hub->charset)) == NULL)
d3372da9 905 return;
906 if((peer = fnetfindpeer(fn, nick)) != NULL)
907 fnetdelpeer(peer);
908 free(nick);
909 hubhandleaction(sk, fn, cmd, args);
910}
911
912static void cmd_nicklist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
913{
914 struct dchub *hub;
915 char *p;
916 wchar_t *buf;
0e227c1d 917 struct fnetpeer *peer;
d3372da9 918
919 hub = fn->data;
0e227c1d 920 for(peer = btreeiter(fn->peers); peer != NULL; peer = btreeiter(NULL))
d3372da9 921 peer->flags.b.delete = 1;
922 while((p = strstr(args, "$$")) != NULL)
923 {
924 *p = 0;
1d85f24b 925 if((buf = icmbstowcs(args, hub->charset)) != NULL)
d3372da9 926 {
927 if((peer = fnetfindpeer(fn, buf)) == NULL)
928 peer = fnetaddpeer(fn, buf, buf);
929 else
930 peer->flags.b.delete = 0;
931 free(buf);
932 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
933 }
934 args = p + 2;
935 }
0e227c1d 936 fnetpeerdm(fn);
d3372da9 937 hubhandleaction(sk, fn, cmd, args);
938}
939
940static void cmd_oplist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
941{
942 struct dchub *hub;
943 char *p;
944 wchar_t *buf;
945 struct fnetpeer *peer;
946
947 hub = fn->data;
0e227c1d 948 for(peer = btreeiter(fn->peers); peer != NULL; peer = btreeiter(NULL))
d3372da9 949 peer->flags.b.op = 0;
950 while((p = strstr(args, "$$")) != NULL)
951 {
952 *p = 0;
1d85f24b 953 if((buf = icmbstowcs(args, hub->charset)) != NULL)
d3372da9 954 {
955 if((peer = fnetfindpeer(fn, buf)) != NULL)
956 peer->flags.b.op = 1;
957 free(buf);
958 }
959 args = p + 2;
960 }
961 hubhandleaction(sk, fn, cmd, args);
962}
963
964static void cmd_myinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
965{
966 char *p, *p2;
967 wchar_t *buf, *wp, *wp2;
968 wchar_t abuf[10];
969 struct fnetpeer *peer;
970 struct dchub *hub;
971
972 hub = fn->data;
973 p = args;
974 if(strncmp(p, "$ALL ", 5))
975 return;
976 p += 5;
977 if((p2 = strchr(p, ' ')) == NULL)
978 return;
979 *p2 = 0;
1d85f24b 980 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 981 return;
982 if((peer = fnetfindpeer(fn, buf)) == NULL)
983 peer = fnetaddpeer(fn, buf, buf);
984 free(buf);
985 p = p2 + 1;
986 if((p2 = strstr(p, "$ $")) == NULL)
987 return;
988 *p2 = 0;
1d85f24b 989 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 990 return;
316e9a13 991 if((wcslen(buf) > 0) && (buf[wcslen(buf) - 1] == L'>') && ((wp = wcsrchr(buf, L'<')) != NULL))
d3372da9 992 {
993 buf[wcslen(buf) - 1] = L'\0';
994 *(wp++) = L'\0';
995 if((wp2 = wcschr(wp, L' ')) != NULL)
996 {
997 *(wp2++) = L'\0';
998 fnetpeersetstr(peer, L"dc-client", wp);
999 wp = wp2;
1000 do
1001 {
1002 if((wp2 = wcschr(wp, L',')) != NULL)
1003 *(wp2++) = L'\0';
1004 if(wp[1] != L':')
1005 continue;
1006 swprintf(abuf, 10, L"dc-tag-%lc", wp[0]);
1007 fnetpeersetstr(peer, abuf, wp + 2);
1008 wp = wp2;
1009 } while(wp2 != NULL);
1010 }
1011 }
1012 fnetpeersetstr(peer, L"descr", buf);
1013 free(buf);
1014 p = p2 + 3;
1015 if((p2 = strchr(p, '$')) == NULL)
1016 return;
1017 *(p2 - 1) = 0;
1d85f24b 1018 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 1019 return;
1020 fnetpeersetstr(peer, L"dc-speed", buf);
1021 free(buf);
1022 p = p2 + 1;
1023 if((p2 = strchr(p, '$')) == NULL)
1024 return;
1025 *p2 = 0;
1d85f24b 1026 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 1027 return;
1028 fnetpeersetstr(peer, L"email", buf);
1029 free(buf);
1030 p = p2 + 1;
1031 if(strlen(p) < 1)
1032 return;
1033 fnetpeersetlnum(peer, L"share", strtoll(p, NULL, 10));
1034 hubhandleaction(sk, fn, cmd, args);
1035}
1036
1037/* I do not implement the fully in that I do not disconnect from the
1038 * old hub. I do this since I believe that if the hub owner really
1039 * wants to get rid of us, then it is his responsibility to disconnect
1040 * us. */
1041static void cmd_forcemove(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1042{
1043 struct dchub *hub;
1044 struct fnetnode *newfn;
1045 int freeargs;
1046
1047 hub = fn->data;
1048 if(strchr(args, ':') == NULL)
1049 {
1050 args = strcpy(smalloc(strlen(args) + 5), args);
1051 strcat(args, ":411");
1052 freeargs = 1;
1053 } else {
1054 freeargs = 0;
1055 }
a3a4a3a7 1056 if((newfn = fnetinitconnect(L"dc", fn->owner, args, NULL)) != NULL)
d3372da9 1057 {
1058 linkfnetnode(newfn);
1059 putfnetnode(newfn);
1060 }
1061 hubhandleaction(sk, fn, cmd, args);
1062 if(freeargs)
1063 free(args);
1064}
1065
1d85f24b 1066static char *getdcpath(struct sharecache *node, size_t *retlen, char *charset)
d3372da9 1067{
1068 char *buf, *buf2;
1069 size_t len, len2;
1070
1071 if(node->parent == NULL)
1072 return(NULL);
1073 if(node->parent == shareroot)
1074 {
1d85f24b 1075 if((buf = icwcstombs(node->name, charset)) == NULL)
d3372da9 1076 return(NULL);
1077 if(retlen != NULL)
1078 *retlen = strlen(buf);
1079 return(buf);
1080 } else {
1d85f24b 1081 if((buf2 = icwcstombs(node->name, charset)) == NULL)
d3372da9 1082 return(NULL);
1d85f24b 1083 if((buf = getdcpath(node->parent, &len, charset)) == NULL)
d3372da9 1084 {
1085 free(buf2);
1086 return(NULL);
1087 }
1088 len2 = strlen(buf2);
1089 buf = srealloc(buf, len + 1 + len2 + 1);
1090 buf[len++] = '\\';
1091 strcpy(buf + len, buf2);
1092 buf[len + len2] = 0;
1093 free(buf2);
1094 if(retlen != NULL)
1095 *retlen = len + len2;
1096 return(buf);
1097 }
1098}
1099
1100/*
1101 * This is the main share searching function for Direct Connect
1102 * peers. Feel free to optimize it if you feel the need for it. I
1103 * haven't ever seen it take any noticable CPU time anyway, so I
1104 * haven't felt that need.
1105 *
1106 * It may feel dubious to just return the directory when all terms are
1107 * satisfied rather than all the files in it, but it really benefits
1108 * everyone: Less cycles used for us, less UDP squelching for active
1109 * searchers, and less bandwidth waste for hubs when serving passive
1110 * searchers.
1111 */
1112static void cmd_search(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1113{
1114 int i, done;
1115 struct dchub *hub;
1116 char *p, *p2;
1117 char *prefix, *infix, *postfix, *buf, *buf2;
1118 struct socket *dsk;
1119 struct sockaddr_in addr;
1120 struct sharecache *node;
1121 int minsize, maxsize;
c7185019 1122 int dotth;
1123 size_t buflen;
d3372da9 1124 int termnum, satisfied, skipcheck;
1125 int level, tersat[32];
1126 wchar_t *terms[32];
1127 char hashtth[24];
1128
1129 hub = fn->data;
1130 if((p = strchr(args, ' ')) == NULL)
1131 return;
1132 *(p++) = 0;
1133
1134 memset(terms, 0, sizeof(terms));
1135 prefix = infix = postfix = NULL;
1136 dsk = NULL;
1137 dotth = 0;
1138
1139 if(!strncmp(args, "Hub:", 4))
1140 {
1141 if(!strcmp(cmd, "$MultiSearch"))
1142 goto out;
1143 if(!strcmp(args + 4, hub->nativenick))
1144 goto out;
1145 prefix = sprintf2("$SR %s ", hub->nativenick);
1146 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
ffa81d5f 1147 postfix = sprintf2(" (%s)\005%s|", formataddress(hub->sk->remote, hub->sk->remotelen), args + 4);
d3372da9 1148 dsk = sk;
1149 getsock(dsk);
1150 } else {
1151 if((p2 = strchr(args, ':')) == NULL)
1152 goto out;
1153 *(p2++) = 0;
1154 addr.sin_family = AF_INET;
1155 if(!inet_aton(args, &addr.sin_addr))
1156 goto out;
1157 addr.sin_port = htons(atoi(p2));
1158 prefix = sprintf2("$SR %s ", hub->nativenick);
1159 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
ffa81d5f 1160 postfix = sprintf2(" (%s)|", formataddress(hub->sk->remote, hub->sk->remotelen));
d3372da9 1161 netdgramconn(dsk = netdupsock(udpsock), (struct sockaddr *)&addr, sizeof(addr));
1162 }
1163
1164 minsize = maxsize = -1;
1165 if(*p == 0)
1166 goto out;
1167 if(*(p++) == 'T')
1168 minsize = 0;
1169 if(*(p++) != '?')
1170 goto out;
1171 if(*p == 0)
1172 goto out;
9d8cf743 1173 if((*(p++) == 'T') && (minsize == 0))
d3372da9 1174 {
1175 maxsize = 0;
1176 minsize = -1;
1177 }
1178 if(*(p++) != '?')
1179 goto out;
1180 if((p2 = strchr(p, '?')) == NULL)
1181 goto out;
1182 *(p2++) = 0;
1183 if(minsize == 0)
1184 minsize = atoi(p);
1185 if(maxsize == 0)
1186 maxsize = atoi(p);
1187 p = p2 + 1;
1188 if(*(p++) != '?')
1189 goto out;
1190 termnum = 0;
1191 p2 = p;
1192 done = 0;
1193 while(!done)
1194 {
1195 if((*p2 == 0) || (*p2 == '$'))
1196 {
1197 if(*p2 == 0)
1198 done = 1;
1199 else
1200 *p2 = 0;
1201 if(*p)
1202 {
1203 if(!dotth && !strncmp(p, "TTH:", 4))
1204 {
1205 dotth = 1;
2dd01e6e 1206 if(((buf = base32decode(p + 4, &buflen)) == NULL) || (buflen != 24))
1207 {
1208 free(buf);
d3372da9 1209 goto out;
2dd01e6e 1210 }
d3372da9 1211 memcpy(hashtth, buf, 24);
1212 free(buf);
1213 } else {
1d85f24b 1214 if((terms[termnum] = icmbstowcs(p, hub->charset)) != NULL)
d3372da9 1215 termnum++;
1216 }
1217 }
1218 p = p2 + 1;
1219 if(termnum == 32)
1220 break;
1221 }
1222 p2++;
1223 }
1224
1225 node = shareroot->child;
1226 level = 0;
1227 for(i = 0; i < termnum; i++)
1228 tersat[i] = -1;
1229 satisfied = 0;
1230 while(1)
1231 {
1232 skipcheck = 0;
1233 if(node->f.b.type == FILE_REG)
1234 {
1235 if((minsize >= 0) && (node->size < minsize))
1236 skipcheck = 1;
1237 if((maxsize >= 0) && (node->size > maxsize))
1238 skipcheck = 1;
1239 }
1240 if(!skipcheck && dotth)
1241 {
1242 if((node->f.b.type != FILE_REG) || (node->f.b.hastth && memcmp(hashtth, node->hashtth, 24)))
1243 skipcheck = 1;
1244 }
1245 if(!skipcheck)
1246 {
1247 for(i = 0; i < termnum; i++)
1248 {
1249 if(tersat[i] >= 0)
1250 continue;
1251 if(wcsexists(node->name, terms[i]))
1252 {
1253 tersat[i] = level;
1254 satisfied++;
1255 } else if(node->child == NULL) {
1256 break;
1257 }
1258 }
1259 }
1260 if(!skipcheck && (satisfied == termnum))
1261 {
1d85f24b 1262 /* Use DCCHARSET in $Get paths until further researched... */
1263 if((buf = getdcpath(node, NULL, DCCHARSET)) != NULL)
d3372da9 1264 {
1265 if(node->f.b.hastth)
1266 {
1267 buf2 = base32encode(node->hashtth, 24);
dcf7a1a2 1268 qstrf(dsk, "%s%s\005%ji%sTTH:%.39s%s", prefix, buf, (intmax_t)node->size, infix, buf2, postfix);
d3372da9 1269 free(buf2);
1270 } else {
dcf7a1a2 1271 qstrf(dsk, "%s%s\005%ji%s%s%s", prefix, buf, (intmax_t)node->size, infix, hub->nativename, postfix);
d3372da9 1272 }
1273 free(buf);
1274 }
1275 }
1276 if((!skipcheck && (satisfied == termnum)) || (node->child == NULL))
1277 {
1278 while(node->next == NULL)
1279 {
1280 if((node = node->parent) == shareroot)
1281 break;
1282 level--;
1283 }
1284 if(node == shareroot)
1285 break;
1286 for(i = 0; i < termnum; i++)
1287 {
1288 if(tersat[i] >= level)
1289 {
1290 tersat[i] = -1;
1291 satisfied--;
1292 }
1293 }
1294 node = node->next;
1295 } else {
1296 node = node->child;
1297 level++;
1298 }
1299 }
1300
1301 hubhandleaction(sk, fn, cmd, args);
1302
1303 out:
1304 if(dsk != NULL)
1305 putsock(dsk);
1306 if(prefix != NULL)
1307 free(prefix);
1308 if(infix != NULL)
1309 free(infix);
1310 if(postfix != NULL)
1311 free(postfix);
1312 for(i = 0; (i < 32) && (terms[i] != NULL); i++)
1313 free(terms[i]);
1314}
1315
1316static void cmd_connecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1317{
1318 char *p;
1319 struct dchub *hub;
1320 struct socket *newsk;
1321 struct sockaddr_in addr;
1322
1323 hub = fn->data;
1324 if((p = strchr(args, ' ')) == NULL)
1325 return;
1326 *(p++) = 0;
1327 if(strcmp(args, hub->nativenick))
1328 return;
1329 addr.sin_family = AF_INET;
1330 args = p;
1331 if((p = strchr(args, ':')) == NULL)
1332 return;
1333 *(p++) = 0;
1334 addr.sin_port = htons(atoi(p));
1335 if(!inet_aton(args, &addr.sin_addr))
1336 return;
cab0b442 1337 newsk = netcsconn((struct sockaddr *)&addr, sizeof(addr), (void (*)(struct socket *, int, void *))peerconnect, fn);
d3372da9 1338 getfnetnode(fn);
1339 hubhandleaction(sk, fn, cmd, args);
1340}
1341
1342static void sendctm(struct socket *sk, char *nick)
1343{
1344 struct sockaddr *addr;
1345 socklen_t addrlen;
1346
1347 if(tcpsock == NULL)
1348 return;
9b5acc18 1349 if(sockgetremotename2(tcpsock, sk, &addr, &addrlen) < 0)
d3372da9 1350 return;
1351 if(addr->sa_family == AF_INET)
1352 qstrf(sk, "$ConnectToMe %s %s|", nick, formataddress(addr, addrlen));
1353 else
1354 flog(LOG_WARNING, "Direct Connect TCP socket is suddenly not AF_INET, but %i", addr->sa_family);
1355 free(addr);
1356}
1357
1358static void cmd_revconnecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1359{
1360 struct dchub *hub;
1361 char *p;
1362
1363 hub = fn->data;
1364 if((p = strchr(args, ' ')) == NULL)
1365 return;
1366 *(p++) = 0;
1367 if(strcmp(p, hub->nativenick))
1368 return;
1369 sendctm(sk, args);
1370 expectpeer(args, fn);
1371 hubhandleaction(sk, fn, cmd, args);
1372}
1373
1374static void cmd_getnetinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1375{
1376 struct dchub *hub;
1377 struct fnetnode *node;
1378 int numhubs;
1379
1380 hub = fn->data;
1381 numhubs = 0;
1382 for(node = fnetnodes; node != NULL; node = node->next)
1383 {
1384 if(node->state == FNN_EST)
1385 numhubs++;
1386 }
1387 qstrf(sk, "$NetInfo %i$%i$%c$0|", confgetint("transfer", "slots"), numhubs, (tcpsock == NULL)?'P':'A');
1388 hubhandleaction(sk, fn, cmd, args);
1389}
1390
1391static void cmd_to(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1392{
1393 struct dchub *hub;
1394 char *p, *p2;
1395
1396 hub = fn->data;
1397 p = args;
1398 if((p2 = strchr(p, ' ')) == NULL)
1399 return;
1400 *(p2++) = 0;
1401 p = p2;
1402 if((p2 = strchr(p, ' ')) == NULL)
1403 return;
1404 *(p2++) = 0;
1405 if(strcmp(p, "From:"))
1406 return;
1407 p = p2;
1408 if((p2 = strstr(p, " $")) == NULL)
1409 return;
1410 *p2 = 0;
1411 p2 += 2;
ffa81d5f 1412 hubrecvchat(hub->sk, fn, p, p2);
d3372da9 1413 hubhandleaction(sk, fn, cmd, args);
1414}
1415
1416static void cmd_sr(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1417{
1418 struct dchub *hub;
d86b7a9f 1419 char *p, *p2, *buf;
d3372da9 1420 char *nick, *filename, *hubname;
dcf7a1a2
FT		 1421 off_t size;
1422 int slots;
d86b7a9f 1423 size_t buflen;
d3372da9 1424 struct srchres *sr;
1425 wchar_t *wnick, *wfile;
1426
1427 hub = fn->data;
1428 nick = p = args;
1429 if((p2 = strchr(p, ' ')) == NULL)
1430 return;
1431 *p2 = 0;
1432 p = p2 + 1;
1433 filename = p;
1434 if((p2 = strchr(p, 5)) == NULL)
1435 return;
1436 *p2 = 0;
1437 p = p2 + 1;
1438 if((p2 = strchr(p, ' ')) == NULL)
1439 return;
1440 *p2 = 0;
dcf7a1a2 1441 size = strtoll(p, NULL, 10);
d3372da9 1442 p = p2 + 1;
1443 if((p2 = strchr(p, '/')) == NULL)
1444 return;
1445 *p2 = 0;
1446 slots = atoi(p);
1447 p = p2 + 1;
1448 if((p2 = strchr(p, 5)) == NULL)
1449 return;
1450 p = p2 + 1;
1451 hubname = p;
1452 if((p2 = strstr(p, " (")) == NULL)
1453 return;
1454 *p2 = 0;
1d85f24b 1455 if((wnick = icmbstowcs(nick, hub->charset)) == NULL)
d3372da9 1456 return;
1d85f24b 1457 /* Use DCCHARSET in $Get paths until further researched... */
040118de 1458 if((wfile = nmdc2path(filename, DCCHARSET)) == NULL)
d3372da9 1459 {
1460 free(wnick);
1461 return;
1462 }
1463 sr = newsrchres(&dcnet, wfile, wnick);
1464 if(sr->peernick != NULL)
1465 free(sr->peernick);
1466 sr->peernick = swcsdup(wnick);
1467 sr->size = size;
1468 sr->slots = slots;
1469 free(wfile);
1470 free(wnick);
d86b7a9f 1471 if(!strncmp(hubname, "TTH:", 4))
1472 {
1473 if((buf = base32decode(hubname + 4, &buflen)) != NULL)
1474 {
1475 if(buflen == 24)
1476 sr->hash = newhash(L"TTH", 24, buf);
1477 free(buf);
1478 }
1479 }
d3372da9 1480 getfnetnode(sr->fn = fn);
1481 submitsrchres(sr);
1482 freesrchres(sr);
1483 hubhandleaction(sk, fn, cmd, args);
1484}
1485
1486static void cmd_usercommand(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1487{
1488 /* Do nothing for now. */
1489}
1490
48509089 1491static void cmd_getpass(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1492{
1493 struct dchub *hub;
1c4b02cd 1494 wchar_t *pw;
48509089 1495 char *mbspw;
1496
1497 hub = fn->data;
1c4b02cd 1498 pw = wpfind(fn->args, L"password");
1d85f24b 1499 if((pw == NULL) || ((mbspw = icwcstombs(pw, hub->charset)) == NULL))
48509089 1500 {
1501 killfnetnode(fn);
1502 return;
1503 }
1504 qstrf(sk, "$MyPass %s|", mbspw);
1505 free(mbspw);
fcd0627b 1506 fn->regstatus = FNNS_REG;
48509089 1507 hubhandleaction(sk, fn, cmd, args);
1508}
1509
c9b3ad74 1510static void cmd_logedin(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1511{
1512 struct dchub *hub;
1513
1514 hub = fn->data;
fcd0627b 1515 fn->regstatus = FNNS_OP;
c9b3ad74 1516 hubhandleaction(sk, fn, cmd, args);
1517}
1518
08b74f8c
FT		 1519static void cmd_hubsupports(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1520{
1521 struct dchub *hub;
1522 int i;
1523 char *p, *p2;
1524 char **arr;
1525 size_t arrsize, arrdata;
1526
1527 hub = fn->data;
1528 if(hub->supports != NULL)
1529 {
1530 for(i = 0; hub->supports[i] != NULL; i++)
1531 free(hub->supports[i]);
1532 free(hub->supports);
1533 }
1534 arr = NULL;
1535 arrsize = arrdata = 0;
1536 p = args;
1537 do
1538 {
1539 if((p2 = strchr(p, ' ')) != NULL)
1540 *(p2++) = 0;
1541 if(*p == 0)
1542 continue;
1543 addtobuf(arr, sstrdup(p));
1544 } while((p = p2) != NULL);
1545 addtobuf(arr, NULL);
1546 hub->supports = arr;
1547}
1548
d3372da9 1549static void cmd_mynick(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1550{
9a2d6cb8 1551 struct dcexppeer *expect;
1c4b02cd 1552 struct dchub *hub;
9a2d6cb8 1553
d3372da9 1554 if(peer->nativename != NULL)
1555 free(peer->nativename);
1556 peer->nativename = sstrdup(args);
1557 if(peer->wcsname != NULL)
1558 free(peer->wcsname);
1d85f24b 1559 if((peer->wcsname = icmbstowcs(peer->nativename, peer->charset)) == NULL)
d3372da9 1560 {
2bf4942d 1561 peer->close = 1;
d3372da9 1562 return;
1563 }
9a2d6cb8 1564 if(peer->accepted)
1565 {
1566 for(expect = expected; expect != NULL; expect = expect->next)
1567 {
1568 if(!strcmp(expect->nick, args))
1569 break;
1570 }
1571 if(expect == NULL)
1572 {
1573 peer->fn = NULL;
1574 } else {
1c4b02cd 1575 hub = expect->fn->data;
9a2d6cb8 1576 peer->fn = expect->fn;
1577 getfnetnode(peer->fn);
1c4b02cd 1578 peer->dcppemu = hub->dcppemu;
9a2d6cb8 1579 freeexppeer(expect);
1580 }
1581 }
d3372da9 1582}
1583
1584static void cmd_direction(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1585{
1586 char *p;
9a2d6cb8 1587 int mydir;
1588 struct transfer *transfer;
d3372da9 1589
1590 if((p = strchr(args, ' ')) == NULL)
1591 return;
1592 *p = 0;
1593 if(!strcmp(args, "Upload"))
9a2d6cb8 1594 mydir = TRNSD_DOWN;
d3372da9 1595 if(!strcmp(args, "Download"))
9a2d6cb8 1596 mydir = TRNSD_UP;
1597 if(peer->accepted)
1598 {
1599 if((peer->transfer == NULL) || (mydir != peer->direction))
1600 {
2bf4942d 1601 peer->close = 1;
9a2d6cb8 1602 return;
1603 }
1b14d3d8 1604 if(peer->direction == TRNSD_DOWN)
1605 requestfile(peer);
9a2d6cb8 1606 } else {
1607 if(peer->wcsname == NULL)
1608 {
2bf4942d 1609 peer->close = 1;
9a2d6cb8 1610 return;
1611 }
1612 peer->direction = mydir;
1613 if(peer->direction == TRNSD_UP)
1614 {
01663fd9 1615 if(confgetint("transfer", "ulquota") && hasupload(&dcnet, peer->wcsname))
1616 {
2bf4942d 1617 peer->close = 1;
01663fd9 1618 return;
1619 }
9a2d6cb8 1620 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1621 } else {
1622 if((transfer = finddownload(peer->wcsname)) == NULL)
1623 {
2bf4942d 1624 peer->close = 1;
9a2d6cb8 1625 return;
1626 }
1627 transferattach(transfer, &dctransfer, peer);
1628 transfersetstate(transfer, TRNS_HS);
1629 }
1630 transfersetnick(transfer, peer->wcsname);
1631 peer->transfer = transfer;
1632 if(peer->extended)
1633 sendsupports(peer);
1634 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1635 if(peer->key != NULL)
1636 qstrf(sk, "$Key %s|", peer->key);
1637 if(peer->direction == TRNSD_DOWN)
1638 requestfile(peer);
1639 }
d3372da9 1640}
1641
1642static void cmd_peerlock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1643{
9a2d6cb8 1644 char *p, *key;
1645 struct transfer *transfer;
d3372da9 1646
1647 if((p = strchr(args, ' ')) == NULL)
1648 return;
1649 *p = 0;
1650 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
1651 peer->extended = 1;
9a2d6cb8 1652 key = dcmakekey(args);
1653 if(peer->accepted)
1654 {
1655 if(peer->wcsname == NULL)
1656 {
2bf4942d 1657 peer->close = 1;
9a2d6cb8 1658 return;
1659 }
1660 sendmynick(peer);
1661 sendpeerlock(peer);
1662 if(peer->extended)
1663 sendsupports(peer);
1664 if((transfer = finddownload(peer->wcsname)) == NULL)
1665 {
01663fd9 1666 if(confgetint("transfer", "ulquota") && hasupload(&dcnet, peer->wcsname))
1667 {
2bf4942d 1668 peer->close = 1;
01663fd9 1669 return;
1670 }
9a2d6cb8 1671 peer->direction = TRNSD_UP;
1672 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1673 } else {
1674 peer->direction = TRNSD_DOWN;
1675 transferattach(transfer, &dctransfer, peer);
1676 transfersetstate(transfer, TRNS_HS);
1677 }
1678 transfersetnick(transfer, peer->wcsname);
1679 peer->transfer = transfer;
1680 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1681 qstrf(sk, "$Key %s|", key);
62da2712 1682 free(key);
9a2d6cb8 1683 } else {
1684 if(peer->key != NULL)
1685 free(peer->key);
1686 peer->key = key;
1687 }
d3372da9 1688}
1689
1690static void cmd_key(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1691{
9a2d6cb8 1692 /* NOP */
1693}
1694
1695static void startdl(struct dcpeer *peer)
1696{
1e9d82b1 1697 if(peer->timeout != NULL)
1698 canceltimer(peer->timeout);
9a2d6cb8 1699 peer->state = PEER_TRNS;
1700 transferstartdl(peer->transfer, peer->sk);
cab0b442 1701 peer->sk->readcb = (void (*)(struct socket *, void *))transread;
1702 peer->sk->errcb = (void (*)(struct socket *, int, void *))transerr;
9a2d6cb8 1703}
1704
1705static void startul(struct dcpeer *peer)
1706{
1e9d82b1 1707 if(peer->timeout != NULL)
1708 canceltimer(peer->timeout);
9a2d6cb8 1709 peer->state = PEER_TRNS;
1710 transferstartul(peer->transfer, peer->sk);
cab0b442 1711 peer->sk->writecb = (void (*)(struct socket *, void *))transwrite;
d3372da9 1712}
1713
1714static void cmd_filelength(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1715{
dcf7a1a2 1716 off_t size;
1fc81821 1717 struct transfer *transfer;
d3372da9 1718
1719 if(peer->transfer == NULL)
1720 {
2bf4942d 1721 peer->close = 1;
d3372da9 1722 return;
1723 }
dcf7a1a2 1724 size = strtoll(args, NULL, 10);
9a2d6cb8 1725 if(peer->transfer->size != size)
d3372da9 1726 {
d3372da9 1727 transfersetsize(peer->transfer, size);
1fc81821 1728 transfer = peer->transfer;
2bf4942d
FT		 1729 peer->close = 1;
1730 resettransfer(transfer);
1fc81821 1731 trytransferbypeer(transfer->fnet, transfer->peerid);
d3372da9 1732 return;
1733 }
9a2d6cb8 1734 startdl(peer);
1735 qstr(peer->sk, "$Send|");
d3372da9 1736}
1737
1738static void cmd_error(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1739{
df873cd0 1740 if(peer->fetchingtthl)
1741 {
1742 peer->fetchingtthl = 0;
1743 peer->notthl = 1;
1744 requestfile(peer);
1745 return;
1746 }
d3372da9 1747 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1748 {
1749 transferseterror(peer->transfer, TRNSE_NOTFOUND);
1750 resettransfer(peer->transfer);
1751 return;
1752 }
2bf4942d 1753 peer->close = 1;
d3372da9 1754}
1755
1756static void cmd_maxedout(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1757{
1758 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1759 {
1760 transferseterror(peer->transfer, TRNSE_NOSLOTS);
1761 resettransfer(peer->transfer);
1762 return;
1763 }
2bf4942d 1764 peer->close = 1;
d3372da9 1765}
1766
1767static struct
1768{
1769 char *name;
1770 char **file;
1771 void (*func)(void);
1772} lists[] =
1773{
1774 {"MyList.DcLst", &hmlistname, updatehmlist},
1775 {"files.xml", &xmllistname, updatexmllist},
1776 {"files.xml.bz2", &xmlbz2listname, updatexmlbz2list},
1777 {NULL, NULL}
1778};
1779
1780static int openfilelist(char *name)
1781{
1782 int i, fd;
1783 int errnobak;
1784
1785 for(i = 0; lists[i].name != NULL; i++)
1786 {
1787 if(!strcmp(name, lists[i].name))
1788 break;
1789 }
1790 errno = 0;
1791 if(lists[i].name == NULL)
1792 return(-1);
1793 fd = -1;
1794 if((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0))
1795 lists[i].func();
1796 if((fd < 0) && ((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0)))
1797 {
1798 errnobak = errno;
1799 flog(LOG_ERR, "could not open filelist tempfile: %s", strerror(errno));
1800 errno = errnobak;
1801 return(-1);
1802 }
1803 return(fd);
1804}
1805
1806static struct sharecache *findbytth(char *tth32)
1807{
1808 char *buf;
1809 size_t buflen;
1810 struct sharecache *node;
1811
1812 if((buf = base32decode(tth32, &buflen)) == NULL)
1813 return(NULL);
1814 if(buflen != 24)
1815 {
1816 free(buf);
1817 return(NULL);
1818 }
1819 for(node = shareroot->child; node != NULL; node = nextscnode(node))
1820 {
1821 if(node->f.b.hastth && !memcmp(node->hashtth, buf, 24))
1822 break;
1823 }
1824 free(buf);
1825 return(node);
1826}
1827
1828static struct sharecache *resdcpath(char *path, char *charset, char sep)
1829{
1830 struct sharecache *node;
1831 char *p, *p2;
1832
1833 node = shareroot;
1834 p = path;
1835 while(p != NULL)
1836 {
1837 if((p2 = strchr(p, sep)) != NULL)
1838 *(p2++) = 0;
1839 if((node = findcache(node, icsmbstowcs(p, charset, L""))) == NULL)
1840 return(NULL);
1841 p = p2;
1842 }
1843 return(node);
1844}
1845
1846static void cmd_get(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1847{
dcf7a1a2 1848 off_t offset;
d3372da9 1849 char *p, *buf;
1850 wchar_t *buf2;
1851 struct sharecache *node;
1852 struct socket *lesk;
1853 int fd;
1854 struct stat sb;
1855
1856 if(peer->transfer == NULL)
1857 {
2bf4942d 1858 peer->close = 1;
d3372da9 1859 return;
1860 }
1861 if((p = strchr(args, '$')) == NULL)
1862 {
2bf4942d 1863 peer->close = 1;
d3372da9 1864 return;
1865 }
1866 *(p++) = 0;
dcf7a1a2 1867 if((offset = (strtoll(p, NULL, 10) - 1)) < 0)
d3372da9 1868 {
2bf4942d 1869 peer->close = 1;
d3372da9 1870 return;
1871 }
1872 if(((fd = openfilelist(args)) < 0) && (errno != 0))
1873 {
1874 qstr(sk, "$Error Could not send file list|");
2bf4942d 1875 peer->close = 1;
d3372da9 1876 return;
1877 } else if(fd >= 0) {
040118de 1878 if((buf2 = nmdc2path(args, DCCHARSET)) != NULL) {
d3372da9 1879 transfersetpath(peer->transfer, buf2);
040118de
FT		 1880 free(buf2);
1881 }
f00d7432 1882 peer->transfer->flags.b.minislot = 1;
d3372da9 1883 }
1884 if(fd < 0)
1885 {
1d85f24b 1886 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 1887 if((node = resdcpath(args, DCCHARSET, '\\')) == NULL)
1888 {
1889 qstrf(sk, "$Error File not in share|");
2bf4942d 1890 peer->close = 1;
d3372da9 1891 return;
1892 }
1893 if((fd = opensharecache(node)) < 0)
1894 {
1895 qstrf(sk, "$Error %s|", strerror(errno));
2bf4942d 1896 peer->close = 1;
d3372da9 1897 return;
1898 }
1899 buf = getfspath(node);
1900 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1901 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1902 else
1903 transfersetpath(peer->transfer, buf2);
1904 free(buf);
1905 }
1906 if(fstat(fd, &sb) < 0)
1907 {
1908 close(fd);
1909 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1910 qstrf(sk, "$Error|");
2bf4942d 1911 peer->close = 1;
d3372da9 1912 return;
1913 }
f00d7432 1914 if(sb.st_size < 65536)
1915 peer->transfer->flags.b.minislot = 1;
1916 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
565006d1 1917 close(fd);
f00d7432 1918 qstr(sk, "$MaxedOut|");
2bf4942d 1919 peer->close = 1;
f00d7432 1920 return;
1921 }
d3372da9 1922 if((offset != 0) && (lseek(fd, offset, SEEK_SET) < 0))
1923 {
1924 close(fd);
1925 qstrf(sk, "$Error Offset out of range|");
2bf4942d 1926 peer->close = 1;
d3372da9 1927 return;
1928 }
1929 lesk = wrapsock(fd);
1930 transferprepul(peer->transfer, sb.st_size, offset, -1, lesk);
1931 putsock(lesk);
dcf7a1a2 1932 qstrf(sk, "$FileLength %ji|", (intmax_t)peer->transfer->size);
d3372da9 1933}
1934
1935static void cmd_send(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1936{
1937 if(peer->transfer == NULL)
1938 {
2bf4942d 1939 peer->close = 1;
d3372da9 1940 return;
1941 }
1942 if(peer->transfer->localend == NULL)
1943 {
2bf4942d 1944 peer->close = 1;
d3372da9 1945 return;
1946 }
1947 peer->ptclose = 1;
9a2d6cb8 1948 startul(peer);
d3372da9 1949}
1950
1951static void cmd_supports(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1952{
1953 int i;
1954 char *p, *p2;
1955 char **arr;
1956 size_t arrsize, arrdata;
1957
1958 if(peer->supports != NULL)
1959 {
1960 for(i = 0; peer->supports[i] != NULL; i++)
1961 free(peer->supports[i]);
1962 free(peer->supports);
1963 }
1964 arr = NULL;
1965 arrsize = arrdata = 0;
1966 p = args;
1967 do
1968 {
1969 if((p2 = strchr(p, ' ')) != NULL)
1970 *(p2++) = 0;
1971 if(*p == 0)
1972 continue;
1973 addtobuf(arr, sstrdup(p));
1974 } while((p = p2) != NULL);
1975 addtobuf(arr, NULL);
1976 peer->supports = arr;
d3372da9 1977}
1978
1979static void cmd_getblock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1980{
1981 int fd;
1982 char *p, *p2;
dcf7a1a2 1983 off_t start, numbytes;
d3372da9 1984 char *charset, *buf;
1985 wchar_t *buf2;
1986 struct sharecache *node;
1987 struct stat sb;
1988 struct socket *lesk;
1989
1990 if(peer->transfer == NULL)
1991 {
2bf4942d 1992 peer->close = 1;
d3372da9 1993 return;
1994 }
1995 p = args;
1996 if((p2 = strchr(p, ' ')) == NULL)
1997 {
2bf4942d 1998 peer->close = 1;
d3372da9 1999 return;
2000 }
2001 *(p2++) = 0;
dcf7a1a2 2002 start = strtoll(p, NULL, 10);
d3372da9 2003 p = p2;
2004 if((p2 = strchr(p, ' ')) == NULL)
2005 {
2bf4942d 2006 peer->close = 1;
d3372da9 2007 return;
2008 }
2009 *(p2++) = 0;
dcf7a1a2 2010 numbytes = strtoll(p, NULL, 10);
d3372da9 2011 p = p2;
2012 if(!strcmp(cmd, "$UGetBlock") || !strcmp(cmd, "$UGetZBlock"))
2013 charset = "UTF-8";
2014 else
1d85f24b 2015 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 2016 charset = DCCHARSET;
2017 if(!strcmp(cmd, "$GetZBlock") || !strcmp(cmd, "$UGetZBlock"))
2018 initcompress(peer, CPRS_ZLIB);
2019 if(((fd = openfilelist(p)) < 0) && (errno != 0))
2020 {
2021 qstr(sk, "$Error Could not send file list|");
2022 return;
2023 } else if(fd >= 0) {
040118de 2024 if((buf2 = nmdc2path(args, charset)) != NULL) {
d3372da9 2025 transfersetpath(peer->transfer, buf2);
040118de
FT		 2026 free(buf2);
2027 }
f00d7432 2028 peer->transfer->flags.b.minislot = 1;
d3372da9 2029 }
2030 if(fd < 0)
2031 {
d3372da9 2032 if((node = resdcpath(p, charset, '\\')) == NULL)
2033 {
2034 qstr(sk, "$Error File not in cache|");
2035 return;
2036 }
2037 if((fd = opensharecache(node)) < 0)
2038 {
2039 qstrf(sk, "$Error %s|", strerror(errno));
2040 return;
2041 }
2042 buf = getfspath(node);
2043 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
2044 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
2045 else
2046 transfersetpath(peer->transfer, buf2);
2047 free(buf);
2048 }
2049 if(fstat(fd, &sb) < 0)
2050 {
2051 close(fd);
2052 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
2053 qstr(sk, "$Error|");
2054 return;
2055 }
f00d7432 2056 if(sb.st_size < 65536)
2057 peer->transfer->flags.b.minislot = 1;
2058 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
565006d1 2059 close(fd);
f00d7432 2060 qstr(sk, "$MaxedOut|");
2061 return;
2062 }
d3372da9 2063 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
2064 {
2065 close(fd);
2066 qstr(sk, "$Error Offset out of range|");
2067 return;
2068 }
2069 if((numbytes < 0) || (start + numbytes > sb.st_size))
2070 numbytes = sb.st_size - start;
2071 lesk = wrapsock(fd);
2072 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2073 putsock(lesk);
dcf7a1a2 2074 qstrf(sk, "$Sending %ji|", (intmax_t)numbytes);
9a2d6cb8 2075 startul(peer);
d3372da9 2076}
2077
2078static void cmd_adcget(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2079{
2080 int i;
2081 char **argv, *buf;
dcf7a1a2 2082 off_t start, numbytes;
d3372da9 2083 struct sharecache *node;
2084 struct stat sb;
2085 struct socket *lesk;
2086 wchar_t *wbuf;
2087 int fd;
2088
2089 if(peer->transfer == NULL)
2090 {
2bf4942d 2091 peer->close = 1;
d3372da9 2092 return;
2093 }
2094 if((argv = parseadc(args)) == NULL)
2095 {
2bf4942d 2096 peer->close = 1;
d3372da9 2097 return;
2098 }
2099 if(parrlen(argv) < 4)
2100 {
2bf4942d 2101 peer->close = 1;
d3372da9 2102 goto out;
2103 }
dcf7a1a2
FT		 2104 start = strtoll(argv[2], NULL, 10);
2105 numbytes = strtoll(argv[3], NULL, 10);
d3372da9 2106 node = NULL;
2107 fd = -1;
2108 if(((fd = openfilelist(argv[1])) < 0) && (errno != 0))
2109 {
2110 qstr(sk, "$Error Could not send file list|");
2111 goto out;
2112 } else if(fd >= 0) {
040118de 2113 if((wbuf = adc2path(argv[1])) != NULL)
d3372da9 2114 transfersetpath(peer->transfer, wbuf);
f00d7432 2115 peer->transfer->flags.b.minislot = 1;
d3372da9 2116 }
2117 if(fd < 0)
2118 {
d3372da9 2119 if(!strncmp(argv[1], "TTH/", 4))
2120 {
2121 if((node = findbytth(argv[1] + 4)) == NULL)
2122 {
2123 qstr(sk, "$Error File not in cache|");
2124 goto out;
2125 }
2126 } else {
9a2d6cb8 2127 if((node = resdcpath((argv[1][0] == '/')?(argv[1] + 1):(argv[1]), "UTF-8", '/')) == NULL)
d3372da9 2128 {
2129 qstr(sk, "$Error File not in cache|");
2130 goto out;
2131 }
2132 }
2133 if((fd = opensharecache(node)) < 0)
2134 {
2135 qstrf(sk, "$Error %s|", strerror(errno));
2136 goto out;
2137 }
2138 buf = getfspath(node);
2139 if((wbuf = icsmbstowcs(buf, NULL, NULL)) == NULL)
2140 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
2141 else
2142 transfersetpath(peer->transfer, wbuf);
2143 free(buf);
2144 }
2145 if(!strcmp(argv[0], "file"))
2146 {
2147 for(i = 4; argv[i] != NULL; i++)
2148 {
2149 if(!strcmp(argv[i], "ZL1"))
2150 initcompress(peer, CPRS_ZLIB);
2151 }
2152 if(fstat(fd, &sb) < 0)
2153 {
2154 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
2155 qstr(sk, "$Error|");
2156 goto out;
2157 }
f00d7432 2158 if(sb.st_size < 65536)
2159 peer->transfer->flags.b.minislot = 1;
2160 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
2161 qstr(sk, "$MaxedOut|");
2162 goto out;
2163 }
d3372da9 2164 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
2165 {
2166 qstr(sk, "$Error Offset out of range|");
2167 goto out;
2168 }
2169 if((numbytes < 0) || (start + numbytes > sb.st_size))
2170 numbytes = sb.st_size - start;
2171 lesk = wrapsock(fd);
2172 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2173 putsock(lesk);
2174 fd = -1;
2175 qstr(sk, "$ADCSND");
2176 sendadc(sk, "file");
2177 sendadc(sk, argv[1]);
dcf7a1a2
FT		 2178 sendadcf(sk, "%ji", (intmax_t)start);
2179 sendadcf(sk, "%ji", (intmax_t)numbytes);
d3372da9 2180 if(peer->compress == CPRS_ZLIB)
2181 sendadc(sk, "ZL1");
2182 qstr(sk, "|");
9a2d6cb8 2183 startul(peer);
d3372da9 2184 } else if(!strcmp(argv[0], "tthl")) {
2185 /*
2186 * XXX: Implement full TTHL support.
2187 *
2188 * In the meantime, this is better than nothing, since it at
2189 * least allows fetching of the TTH root if it isn't already
2190 * known.
2191 */
2192 if(node == NULL)
2193 {
2194 qstr(sk, "$Error no TTHL data for virtual files|");
2195 goto out;
2196 }
2197 qstr(sk, "$ADCSND");
2198 sendadc(sk, "tthl");
2199 sendadc(sk, argv[1]);
2200 sendadc(sk, "0");
2201 sendadc(sk, "24");
2202 qstr(sk, "|");
2203 sockqueue(sk, node->hashtth, 24);
2204 } else {
2205 qstr(sk, "$Error Namespace not implemented|");
2206 goto out;
2207 }
d3372da9 2208
2209 out:
2210 if(fd >= 0)
2211 close(fd);
2212 freeparr(argv);
2213}
2214
9a2d6cb8 2215static void handletthl(struct dcpeer *peer)
2216{
2217 char buf[24];
2218
2219 while(peer->inbufdata >= 24)
2220 {
2221 pushtigertree(&peer->tth, peer->inbuf);
2222 memmove(peer->inbuf, peer->inbuf + 24, peer->inbufdata -= 24);
e52006fe 2223 peer->curread += 24;
9a2d6cb8 2224 }
e52006fe 2225 if(peer->curread >= peer->totalsize)
9a2d6cb8 2226 {
1e9d82b1 2227 if(peer->timeout == NULL)
2228 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
9a2d6cb8 2229 peer->state = PEER_CMD;
2230 synctigertree(&peer->tth);
2231 restigertree(&peer->tth, buf);
2232 transfersethash(peer->transfer, newhash(L"TTH", 24, buf));
2233 requestfile(peer);
2234 }
2235}
2236
2237static void cmd_adcsnd(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2238{
2239 char **argv;
dcf7a1a2 2240 off_t start, numbytes;
9a2d6cb8 2241
2242 if(peer->transfer == NULL)
2243 {
2bf4942d 2244 peer->close = 1;
9a2d6cb8 2245 return;
2246 }
2247 if((argv = parseadc(args)) == NULL)
2248 {
2bf4942d 2249 peer->close = 1;
9a2d6cb8 2250 return;
2251 }
2252 if(parrlen(argv) < 4)
2253 {
2bf4942d 2254 peer->close = 1;
9a2d6cb8 2255 goto out;
2256 }
dcf7a1a2
FT		 2257 start = strtoll(argv[2], NULL, 10);
2258 numbytes = strtoll(argv[3], NULL, 10);
9a2d6cb8 2259 if(!strcmp(argv[0], "tthl"))
2260 {
2261 if((start != 0) || (numbytes % 24 != 0))
2262 {
2263 /* Weird. Bail out. */
2bf4942d 2264 peer->close = 1;
9a2d6cb8 2265 goto out;
2266 }
1e9d82b1 2267 if(peer->timeout != NULL)
2268 canceltimer(peer->timeout);
9a2d6cb8 2269 peer->state = PEER_TTHL;
2270 peer->totalsize = numbytes;
2271 peer->curread = 0;
df873cd0 2272 peer->fetchingtthl = 0;
9a2d6cb8 2273 inittigertree(&peer->tth);
2274 handletthl(peer);
2275 } else if(!strcmp(argv[0], "file")) {
2276 if(start != peer->transfer->curpos)
2277 {
2bf4942d 2278 peer->close = 1;
9a2d6cb8 2279 goto out;
2280 }
2281 if(start + numbytes != peer->transfer->size)
2282 {
2283 transfersetsize(peer->transfer, start + numbytes);
2bf4942d 2284 peer->close = 1;
9a2d6cb8 2285 goto out;
2286 }
2287 startdl(peer);
cab0b442 2288 if(peer->inbufdata > 0)
2289 {
2290 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2291 peer->inbufdata = 0;
2292 transread(sk, peer);
2293 }
9a2d6cb8 2294 } else {
2295 /* We certainly didn't request this...*/
2bf4942d 2296 peer->close = 1;
9a2d6cb8 2297 goto out;
2298 }
2299
2300 out:
2301 freeparr(argv);
2302}
2303
2304static void cmd_sending(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2305{
dcf7a1a2 2306 off_t numbytes;
9a2d6cb8 2307
2308 if(peer->transfer == NULL)
2309 {
2bf4942d 2310 peer->close = 1;
9a2d6cb8 2311 return;
2312 }
dcf7a1a2 2313 numbytes = strtoll(args, NULL, 10);
9a2d6cb8 2314 if(peer->transfer->size - peer->transfer->curpos != numbytes)
2315 {
2316 transfersetsize(peer->transfer, peer->transfer->curpos + numbytes);
2bf4942d 2317 peer->close = 1;
9a2d6cb8 2318 return;
2319 }
2320 startdl(peer);
cab0b442 2321 if(peer->inbufdata > 0)
2322 {
2323 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2324 peer->inbufdata = 0;
2325 transread(sk, peer);
2326 }
9a2d6cb8 2327}
2328
d3372da9 2329/*
2330Hub skeleton:
2331static void cmd_(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
2332{
2333 struct dchub *hub;
2334
2335 hub = fn->data;
2336 hubhandleaction(sk, fn, cmd, args);
2337}
2338
2339Peer skeleton:
2340static void cmd_(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2341{
d3372da9 2342}
2343
2344*/
2345
2346static int hubreqconn(struct fnetpeer *peer)
2347{
2348 struct dchub *hub;
2349 char *mbsnick;
2350
2351 if((peer->fn->state != FNN_EST) || (peer->fn->fnet != &dcnet))
2352 {
2353 errno = EINVAL;
2354 return(1);
2355 }
2356 if((hub = peer->fn->data) == NULL)
2357 {
2358 errno = EFAULT;
2359 return(1);
2360 }
1d85f24b 2361 if((mbsnick = icwcstombs(peer->id, hub->charset)) == NULL)
d3372da9 2362 return(1); /* Shouldn't happen, of course, but who knows... */
2363 if(tcpsock != NULL)
2364 {
ffa81d5f 2365 sendctm(hub->sk, mbsnick);
d3372da9 2366 expectpeer(mbsnick, peer->fn);
2367 } else {
ffa81d5f 2368 qstrf(hub->sk, "$RevConnectToMe %s %s|", hub->nativenick, mbsnick);
d3372da9 2369 }
2370 free(mbsnick);
2371 return(0);
2372}
2373
2374static int hubsendchat(struct fnetnode *fn, int public, wchar_t *to, wchar_t *string)
2375{
2376 struct dchub *hub;
2377 char *mbsstring, *mbsto;
2378
2379 hub = fn->data;
1d85f24b 2380 if((mbsto = icwcstombs(to, hub->charset)) == NULL)
d3372da9 2381 {
2382 errno = EILSEQ;
2383 return(1);
2384 }
1d85f24b 2385 if((mbsstring = icwcstombs(string, hub->charset)) == NULL)
d3372da9 2386 {
2387 errno = EILSEQ;
2388 return(1);
2389 }
2390 if((strchr(mbsto, '|') != NULL) || (strchr(mbsto, ' ') != NULL))
2391 {
2392 free(mbsto);
2393 free(mbsstring);
2394 errno = ESRCH;
2395 return(1);
2396 }
2397 if(strchr(mbsstring, '|') != NULL)
2398 {
2399 free(mbsto);
2400 free(mbsstring);
2401 errno = EILSEQ;
2402 return(1);
2403 }
2404 if(public)
2405 {
2406 if(*to == L'\0')
2407 {
ffa81d5f 2408 qstrf(hub->sk, "<%s> %s|", hub->nativenick, mbsstring);
d3372da9 2409 } else {
ffa81d5f 2410 qstrf(hub->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
d3372da9 2411 }
2412 } else {
ffa81d5f 2413 qstrf(hub->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
d3372da9 2414 }
2415 free(mbsto);
2416 free(mbsstring);
2417 return(0);
2418}
2419
2420static void findsizelimit(struct sexpr *sexpr, int *min, int *max)
2421{
2422 int minl, maxl, minr, maxr, retmin, retmax;
2423
2424 switch(sexpr->op)
2425 {
2426 case SOP_AND:
2427 findsizelimit(sexpr->l, &minl, &maxl);
2428 findsizelimit(sexpr->r, &minr, &maxr);
2429 retmin = (minl > minr)?minl:minr;
2430 if((maxl != -1) && (maxr != -1))
2431 retmax = (maxl < maxr)?maxl:maxr;
2432 else if(maxl != -1)
2433 retmax = maxl;
2434 else if(maxr != -1)
2435 retmax = maxr;
2436 else
2437 retmax = -1;
2438 break;
2439 case SOP_OR:
2440 findsizelimit(sexpr->l, &minl, &maxl);
2441 findsizelimit(sexpr->r, &minr, &maxr);
2442 retmin = (minl < minr)?minl:minr;
2443 if((maxl == -1) || (maxr == -1))
2444 retmax = -1;
2445 else
2446 retmax = (maxl > maxr)?maxl:maxr;
2447 break;
2448 case SOP_NOT:
2449 findsizelimit(sexpr->l, &minl, &maxl);
2450 if((minl == 0) && (maxl == -1)) /* Interval is unspecified */
2451 {
2452 retmin = 0;
2453 retmax = -1;
2454 } else if((minl == 0) && (maxl != -1)) {
2455 retmin = maxl + 1;
2456 retmax = -1;
2457 } else if((minl != 0) && (maxl == -1)) {
2458 retmin = 0;
2459 retmax = minl - 1;
2460 } else { /* This would yield two seperate intervals, which DC cannot handle */
2461 retmin = 0;
2462 retmax = -1;
2463 }
2464 case SOP_SIZELT:
2465 retmin = 0;
2466 retmax = sexpr->d.n - 1;
2467 break;
2468 case SOP_SIZEEQ:
2469 retmin = sexpr->d.n;
2470 retmax = sexpr->d.n;
2471 break;
2472 case SOP_SIZEGT:
2473 retmin = sexpr->d.n + 1;
2474 retmax = -1;
2475 break;
2476 default:
2477 retmin = 0;
2478 retmax = -1;
2479 break;
2480 }
2481 if(min != NULL)
2482 *min = retmin;
2483 if(max != NULL)
2484 *max = retmax;
2485}
2486
9d8cf743 2487static struct hash *findsehash(struct sexpr *sexpr)
2488{
2489 struct hash *h1, *h2;
2490
2491 switch(sexpr->op)
2492 {
2493 case SOP_AND:
2494 if((h1 = findsehash(sexpr->l)) != NULL)
2495 return(h1);
2496 if((h1 = findsehash(sexpr->r)) != NULL)
2497 return(h1);
2498 break;
2499 case SOP_OR:
175c86de 2500 if((h1 = findsehash(sexpr->l)) == NULL)
2501 return(NULL);
2502 if((h2 = findsehash(sexpr->r)) == NULL)
2503 return(NULL);
9d8cf743 2504 if(hashcmp(h1, h2))
2505 return(h1);
2506 break;
2507 case SOP_HASHIS:
2508 if(!wcscmp(sexpr->d.hash->algo, L"TTH"))
2509 return(sexpr->d.hash);
2510 default:
2511 break;
2512 }
2513 return(NULL);
2514}
2515
d3372da9 2516static int hubsearch(struct fnetnode *fn, struct search *srch, struct srchfnnlist *ln)
2517{
2518 struct dchub *hub;
2519 struct wcslist *list, *cur;
2520 char *sstr, *buf, *p;
2521 size_t sstrsize, sstrdata;
2522 struct sockaddr *name;
2523 socklen_t namelen;
2524 int minsize, maxsize;
9d8cf743 2525 struct hash *hash;
d3372da9 2526
2527 hub = fn->data;
ffa81d5f 2528 if((fn->state != FNN_EST) || (hub->sk == NULL) || (hub->sk->state != SOCK_EST))
d3372da9 2529 return(1);
2530 list = findsexprstrs(srch->sexpr);
2531 findsizelimit(srch->sexpr, &minsize, &maxsize);
9d8cf743 2532 hash = findsehash(srch->sexpr);
d3372da9 2533 if((minsize != 0) && (maxsize != -1))
2534 {
2535 /* Choose either minsize or maxsize by trying to determine
2536 * which choice will be most restrictive. The result can be
2537 * approximative at best anyway, so don't try too hard... */
2538 if((50000000 - maxsize) > (minsize - 50000000))
2539 minsize = 0;
2540 else
2541 maxsize = -1;
2542 }
d3372da9 2543 sstr = NULL;
2544 sstrsize = sstrdata = 0;
9d8cf743 2545 if((hash != NULL) && (hash->len == 24))
d3372da9 2546 {
9d8cf743 2547 /* Prioritize hash searches above all else */
2548 bufcat(sstr, "F?T?0?9?TTH:", 12);
2549 buf = base32encode(hash->buf, hash->len);
2550
2551 bufcat(sstr, buf, 39);
2552 free(buf);
2553 } else {
2554 if(minsize != 0)
d3372da9 2555 {
9d8cf743 2556 sizebuf2(sstr, sstrdata + 32, 1);
fe42d689 2557 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?F?%i?1?", minsize);
9d8cf743 2558 } else if(maxsize != -1) {
2559 sizebuf2(sstr, sstrdata + 32, 1);
fe42d689 2560 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?T?%i?1?", maxsize);
9d8cf743 2561 } else {
2562 bufcat(sstr, "F?F?0?1?", 8);
2563 }
2564 if(list != NULL)
2565 {
2566 for(cur = list; cur != NULL; cur = cur->next)
d3372da9 2567 {
1d85f24b 2568 /* Use DCCHARSET in $Get paths until further researched... */
9d8cf743 2569 if((buf = icwcstombs(cur->str, DCCHARSET)) == NULL)
2570 {
2571 /* Can't find anything anyway if the search expression
2572 * requires characters outside DC's charset. There's
2573 * nothing technically wrong with the search itself,
2574 * however, so return success. This should be
2575 * considered as an optimization. */
2576 freesl(&list);
2577 if(sstr != NULL)
2578 free(sstr);
2579 return(0);
2580 }
2581 if(cur != list)
2582 addtobuf(sstr, '$');
2583 /*
2584 * It probably doesn't hurt if buf contains any extra
2585 * dollar signs - it will just result in extra search
2586 * terms, and the extraneous results will be filtered by
2587 * the search layer anyway. It hurts if it contains any
2588 * pipes, though, so let's sell them for money.
2589 */
2590 for(p = buf; *p; p++)
2591 {
2592 if(*p == '|')
2593 *p = '$';
2594 }
2595 bufcat(sstr, buf, strlen(buf));
2596 free(buf);
d3372da9 2597 }
9d8cf743 2598 } else {
2599 /* Will match all files... :-/ */
2600 addtobuf(sstr, '.');
d3372da9 2601 }
d3372da9 2602 }
2603 addtobuf(sstr, 0);
2604 if(tcpsock != NULL)
2605 {
ffa81d5f 2606 if(sockgetremotename2(udpsock, hub->sk, &name, &namelen) < 0)
d3372da9 2607 {
2608 flog(LOG_WARNING, "cannot get address of UDP socket");
2609 } else {
ffa81d5f 2610 qstrf(hub->sk, "$Search %s %s|", formataddress(name, namelen), sstr);
d3372da9 2611 free(name);
2612 }
2613 } else {
ffa81d5f 2614 qstrf(hub->sk, "$Search Hub:%s %s|", hub->nativenick, sstr);
d3372da9 2615 }
2616 free(sstr);
2617 freesl(&list);
2618 fn->lastsrch = time(NULL);
2619 return(0);
2620}
2621
2622#undef skipcmd
2623#undef qstr
2624#undef qstrf
2625
2626#define cc(c) ((void (*)(struct socket *, void *, char *, char *))(c))
8b930085 2627static struct command hubcmds[] =
d3372da9 2628{
2629 {"$Lock", cc(cmd_lock)},
2630 {"$HubName", cc(cmd_hubname)},
2631 {"$Hello", cc(cmd_hello)},
2632 {"$Quit", cc(cmd_quit)},
2633 {"$NickList", cc(cmd_nicklist)},
2634 {"$OpList", cc(cmd_oplist)},
2635 {"$MyINFO", cc(cmd_myinfo)},
2636 {"$ForceMove", cc(cmd_forcemove)},
8cb2d75b
FT		 2637 {"$Search", cc(cmd_search), .limit = 100},
2638 {"$MultiSearch", cc(cmd_search), .limit = 50},
2639 {"$ConnectToMe", cc(cmd_connecttome), .limit = 200},
2640 {"$RevConnectToMe", cc(cmd_revconnecttome), .limit = 500},
d3372da9 2641 {"$GetNetInfo", cc(cmd_getnetinfo)},
2642 {"$To:", cc(cmd_to)},
2643 {"$SR", cc(cmd_sr)},
2644 {"$UserCommand", cc(cmd_usercommand)},
48509089 2645 {"$GetPass", cc(cmd_getpass)},
c9b3ad74 2646 {"$LogedIn", cc(cmd_logedin)}, /* sic */
08b74f8c 2647 {"$Supports", cc(cmd_hubsupports)},
d3372da9 2648 {NULL, NULL}
2649};
2650
8b930085 2651static struct command peercmds[] =
d3372da9 2652{
2653 {"$MyNick", cc(cmd_mynick)},
2654 {"$Lock", cc(cmd_peerlock)},
2655 {"$Direction", cc(cmd_direction)},
2656 {"$Key", cc(cmd_key)},
2657 {"$FileLength", cc(cmd_filelength)},
2658 {"$Error", cc(cmd_error)},
2659 {"$MaxedOut", cc(cmd_maxedout)},
2660 {"$Get", cc(cmd_get)},
2661 {"$Send", cc(cmd_send)},
2662 {"$Supports", cc(cmd_supports)},
2663 {"$GetBlock", cc(cmd_getblock)},
2664 {"$UGetBlock", cc(cmd_getblock)},
2665 {"$GetZBlock", cc(cmd_getblock)},
2666 {"$UGetZBlock", cc(cmd_getblock)},
2667 {"$ADCGET", cc(cmd_adcget)},
8cb2d75b
FT		 2668 {"$ADCSND", cc(cmd_adcsnd), .stop = 1},
2669 {"$Sending", cc(cmd_sending), .stop = 1},
d3372da9 2670 {NULL, NULL}
2671};
2672#undef cc
2673
2674static void dctransdetach(struct transfer *transfer, struct dcpeer *peer)
2675{
cab0b442 2676 CBUNREG(transfer, trans_filterout, peer);
d3372da9 2677 peer->transfer = NULL;
2bf4942d 2678 peer->close = 1;
d3372da9 2679}
2680
2681static void dctransgotdata(struct transfer *transfer, struct dcpeer *peer)
2682{
2683 int ret;
2684 void *buf;
c7185019 2685 unsigned char outbuf[1024];
d3372da9 2686 z_stream *cstr;
2687 size_t bufsize;
2688
2689 if((peer->state == PEER_TRNS) || (peer->state == PEER_SYNC))
2690 {
2691 if(sockqueuesize(peer->sk) < 65536)
2692 {
2693 if((buf = transfergetdata(transfer, &bufsize)) != NULL)
2694 {
2695 if(peer->compress == CPRS_NONE)
2696 {
2697 sockqueue(peer->sk, buf, bufsize);
2698 } else if(peer->compress == CPRS_ZLIB) {
2699 cstr = peer->cprsdata;
2700 cstr->next_in = buf;
2701 cstr->avail_in = bufsize;
2702 while(cstr->avail_in > 0)
2703 {
2704 cstr->next_out = outbuf;
2705 cstr->avail_out = sizeof(outbuf);
2706 if((ret = deflate(cstr, 0)) != Z_OK)
2707 {
2708 flog(LOG_WARNING, "bug? deflate() did not return Z_OK (but rather %i)", ret);
2709 freedcpeer(peer);
2710 return;
2711 }
2712 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2713 }
2714 }
2715 free(buf);
2716 }
2717 if(peer->state == PEER_SYNC)
2718 {
2719 if(peer->compress == CPRS_ZLIB)
2720 {
2721 cstr = peer->cprsdata;
2722 cstr->next_in = NULL;
2723 cstr->avail_in = 0;
2724 do
2725 {
2726 cstr->next_out = outbuf;
2727 cstr->avail_out = sizeof(outbuf);
2728 ret = deflate(cstr, Z_FINISH);
2729 if((ret != Z_OK) && (ret != Z_STREAM_END))
2730 {
2731 flog(LOG_WARNING, "bug? deflate(Z_FINISH) did not return Z_OK (but rather %i)", ret);
2732 freedcpeer(peer);
2733 return;
2734 }
2735 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2736 } while(ret != Z_STREAM_END);
2737 }
2738 if(peer->ptclose)
2739 {
2740 freedcpeer(peer);
2741 } else {
1e9d82b1 2742 if(peer->timeout == NULL)
2743 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 2744 peer->state = PEER_CMD;
2745 endcompress(peer);
2746 transfersetstate(transfer, TRNS_HS);
2747 socksettos(peer->sk, confgetint("fnet", "fnptos"));
bfc261fe 2748 transfer->flags.b.minislot = 0;
cab0b442 2749 peer->sk->writecb = NULL;
d3372da9 2750 }
2751 }
2752 }
2753 }
2754}
2755
2756static void dctransendofdata(struct transfer *transfer, struct dcpeer *peer)
2757{
2758 peer->state = PEER_SYNC;
2759 dctransgotdata(transfer, peer);
2760}
2761
2762static void dcwantdata(struct transfer *transfer, struct dcpeer *peer)
2763{
2764 if(transferdatasize(transfer) < 65536)
2765 peer->sk->ignread = 0;
2766}
2767
cab0b442 2768static void transread(struct socket *sk, struct dcpeer *peer)
d3372da9 2769{
cab0b442 2770 void *buf;
2771 size_t bufsize;
d3372da9 2772 struct transfer *transfer;
2773
cab0b442 2774 if((buf = sockgetinbuf(sk, &bufsize)) == NULL)
2775 return;
d3372da9 2776 if(peer->transfer == NULL)
2777 {
cab0b442 2778 free(buf);
d3372da9 2779 freedcpeer(peer);
2780 return;
2781 }
cab0b442 2782 transferputdata(peer->transfer, buf, bufsize);
2783 free(buf);
d3372da9 2784 if(peer->transfer->curpos >= peer->transfer->size)
2785 {
2786 transfer = peer->transfer;
2787 transferdetach(transfer);
2788 transferendofdata(transfer);
2789 return;
2790 }
2791 if(transferdatasize(peer->transfer) > 65535)
cab0b442 2792 sk->ignread = 1;
d3372da9 2793}
2794
cab0b442 2795static void transerr(struct socket *sk, int err, struct dcpeer *peer)
d3372da9 2796{
2797 struct transfer *transfer;
2798
2799 if((transfer = peer->transfer) == NULL)
cab0b442 2800 {
2801 freedcpeer(peer);
d3372da9 2802 return;
cab0b442 2803 }
d3372da9 2804 transferdetach(transfer);
2805 transferendofdata(transfer);
2806}
2807
cab0b442 2808static void transwrite(struct socket *sk, struct dcpeer *peer)
d3372da9 2809{
2810 if((peer->state != PEER_TRNS) && (peer->state != PEER_SYNC))
cab0b442 2811 return;
d3372da9 2812 if(peer->transfer == NULL)
2813 {
2814 freedcpeer(peer);
cab0b442 2815 return;
d3372da9 2816 }
2817 dctransgotdata(peer->transfer, peer);
2818}
2819
cab0b442 2820static void udpread(struct socket *sk, void *data)
d3372da9 2821{
d86b7a9f 2822 char *buf, *p, *p2, *hashbuf;
2823 size_t buflen, hashlen;
d3372da9 2824 char *nick, *filename, *hubname;
99a28d47 2825 struct sockaddr_in hubaddr;
dcf7a1a2
FT		 2826 off_t size;
2827 int slots;
d3372da9 2828 struct fnetnode *fn, *myfn;
2829 struct dchub *hub;
2830 struct srchres *sr;
2831 wchar_t *wnick, *wfile;
d86b7a9f 2832 struct hash *hash;
d3372da9 2833
2834 if((buf = sockgetinbuf(sk, &buflen)) == NULL)
cab0b442 2835 return;
d3372da9 2836 buf = srealloc(buf, buflen + 1);
2837 buf[buflen] = 0;
2838 if(!strncmp(buf, "$SR ", 4))
2839 {
2840 p = buf + 4;
2841 nick = p;
2842 if((p2 = strchr(p, ' ')) == NULL)
2843 {
2844 free(buf);
cab0b442 2845 return;
d3372da9 2846 }
2847 *p2 = 0;
2848 p = p2 + 1;
2849 filename = p;
2850 if((p2 = strchr(p, 5)) == NULL)
2851 {
2852 free(buf);
cab0b442 2853 return;
d3372da9 2854 }
2855 *p2 = 0;
2856 p = p2 + 1;
2857 if((p2 = strchr(p, ' ')) == NULL)
2858 {
2859 free(buf);
cab0b442 2860 return;
d3372da9 2861 }
2862 *p2 = 0;
dcf7a1a2 2863 size = strtoll(p, NULL, 10);
d3372da9 2864 p = p2 + 1;
2865 if((p2 = strchr(p, '/')) == NULL)
2866 {
2867 free(buf);
cab0b442 2868 return;
d3372da9 2869 }
2870 *p2 = 0;
2871 slots = atoi(p);
2872 p = p2 + 1;
2873 if((p2 = strchr(p, 5)) == NULL)
2874 {
2875 free(buf);
cab0b442 2876 return;
d3372da9 2877 }
2878 p = p2 + 1;
2879 hubname = p;
2880 if((p2 = strstr(p, " (")) == NULL)
2881 {
2882 free(buf);
cab0b442 2883 return;
d3372da9 2884 }
2885 *p2 = 0;
99a28d47 2886 p = p2 + 2;
2887 if((p2 = strchr(p, ':')) == NULL)
2888 {
2889 free(buf);
cab0b442 2890 return;
99a28d47 2891 }
870bf4ad 2892 *(p2++) = 0;
99a28d47 2893 hubaddr.sin_family = AF_INET;
2894 if(!inet_aton(p, &hubaddr.sin_addr))
2895 {
2896 free(buf);
cab0b442 2897 return;
99a28d47 2898 }
2899 p = p2;
2900 if((p2 = strchr(p, ')')) == NULL)
2901 {
2902 free(buf);
cab0b442 2903 return;
99a28d47 2904 }
2905 *p2 = 0;
2906 hubaddr.sin_port = htons(atoi(p));
1d85f24b 2907 /* Use DCCHARSET in $Get paths until further researched... */
040118de 2908 if((wfile = nmdc2path(filename, DCCHARSET)) == NULL)
d3372da9 2909 {
d3372da9 2910 free(buf);
cab0b442 2911 return;
d3372da9 2912 }
2913 myfn = NULL;
d86b7a9f 2914 hash = NULL;
2915 if(!strncmp(hubname, "TTH:", 4))
d3372da9 2916 {
d86b7a9f 2917 if((hashbuf = base32decode(hubname + 4, &hashlen)) != NULL)
2918 {
2919 if(hashlen == 24)
2920 hash = newhash(L"TTH", 24, hashbuf);
2921 free(hashbuf);
2922 }
2923 } else {
2924 for(fn = fnetnodes; fn != NULL; fn = fn->next)
d3372da9 2925 {
d86b7a9f 2926 if((fn->fnet == &dcnet) && ((hub = fn->data) != NULL))
d3372da9 2927 {
d86b7a9f 2928 if((hub->nativename != NULL) && !strcmp(hub->nativename, hubname))
d3372da9 2929 {
d86b7a9f 2930 if(myfn == NULL)
2931 {
2932 myfn = fn;
2933 } else {
2934 myfn = NULL;
2935 break;
2936 }
d3372da9 2937 }
2938 }
2939 }
2940 }
99a28d47 2941 if(myfn == NULL)
2942 {
2943 for(fn = fnetnodes; fn != NULL; fn = fn->next)
2944 {
ffa81d5f 2945 if((fn->fnet == &dcnet) && ((hub = fn->data) != NULL))
99a28d47 2946 {
ffa81d5f
FT		 2947 if((hub->sk != NULL) && addreq(hub->sk->remote, (struct sockaddr *)&hubaddr))
2948 {
2949 myfn = fn;
2950 break;
2951 }
99a28d47 2952 }
2953 }
2954 }
1d85f24b 2955 hub = NULL;
2956 if(myfn != NULL)
2957 hub = myfn->data;
2958 if((wnick = icmbstowcs(nick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
2959 {
2960 free(buf);
cab0b442 2961 return;
1d85f24b 2962 }
d3372da9 2963 sr = newsrchres(&dcnet, wfile, wnick);
2964 if(sr->peernick != NULL)
2965 free(sr->peernick);
2966 sr->peernick = swcsdup(wnick);
2967 sr->size = size;
2968 sr->slots = slots;
2969 free(wfile);
2970 free(wnick);
2971 if(myfn != NULL)
2972 getfnetnode(sr->fn = myfn);
d86b7a9f 2973 if(hash != NULL)
2974 sr->hash = hash;
d3372da9 2975 submitsrchres(sr);
2976 freesrchres(sr);
2977 }
2978 free(buf);
2979}
2980
2981static void hubread(struct socket *sk, struct fnetnode *fn)
2982{
2983 struct dchub *hub;
8cb2d75b 2984 struct command *cmd;
d3372da9 2985 char *newbuf;
8cb2d75b 2986 size_t datalen, cnlen;
c319fb93 2987 char *p, *p2;
d3372da9 2988
2989 hub = (struct dchub *)fn->data;
2990 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
2991 return;
2992 if(hub->inbufdata > 500000) /* Discard possible malicious data */
2993 hub->inbufdata = 0;
2994 sizebuf2(hub->inbuf, hub->inbufdata + datalen, 1);
2995 memcpy(hub->inbuf + hub->inbufdata, newbuf, datalen);
2996 free(newbuf);
c319fb93 2997 p = hub->inbuf;
d3372da9 2998 hub->inbufdata += datalen;
28a3ef52 2999 while((p - hub->inbuf < hub->inbufdata) && ((p2 = memchr(p, '|', hub->inbufdata - (p - hub->inbuf))) != NULL))
d3372da9 3000 {
c319fb93 3001 *(p2++) = 0;
8cb2d75b
FT		 3002 for(cmd = hubcmds; cmd->handler != NULL; cmd++)
3003 {
3004 cnlen = strlen(cmd->name);
c319fb93 3005 if(!strncmp(p, cmd->name, cnlen) && ((p[cnlen] == ' ') || (p[cnlen] == 0)))
8cb2d75b
FT		 3006 break;
3007 }
3008 if((cmd->limit == 0) || (hub->queue.size < cmd->limit))
c319fb93 3009 newqcmd(&hub->queue, p);
c319fb93 3010 p = p2;
d3372da9 3011 }
c319fb93 3012 memmove(hub->inbuf, p, hub->inbufdata -= p - hub->inbuf);
8cb2d75b
FT		 3013 if(hub->queue.size > 1000)
3014 sk->ignread = 1;
d3372da9 3015}
3016
3017static void huberr(struct socket *sk, int err, struct fnetnode *fn)
3018{
3019 killfnetnode(fn);
3020}
3021
3022static int hubsetnick(struct fnetnode *fn, wchar_t *newnick)
3023{
3024 struct dchub *hub;
3025 char *buf;
3026
3027 hub = fn->data;
1d85f24b 3028 if((buf = icwcstombs(newnick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
d3372da9 3029 return(1);
3030 if((strchr(buf, ' ') != NULL) || (strchr(buf, '|') != NULL) || (strchr(buf, '$') != NULL))
3031 {
3032 free(buf);
3033 return(1);
3034 }
3035 if(hub == NULL) /* Not yet connected */
3036 {
3037 free(buf);
3038 return(0);
3039 }
3040 if(hub->nativenick != NULL)
3041 free(hub->nativenick);
3042 hub->nativenick = buf;
3043 return(0);
3044}
3045
3046static struct dchub *newdchub(struct fnetnode *fn)
3047{
3048 struct dchub *new;
1c4b02cd 3049 wchar_t *emu;
1d85f24b 3050 wchar_t *wcharset;
3051 char *charset;
d3372da9 3052
3053 new = smalloc(sizeof(*new));
3054 memset(new, 0, sizeof(*new));
3055 fn->data = new;
1c4b02cd 3056 if(confgetint("dc", "dcppemu"))
3057 new->dcppemu = 1;
3058 if((emu = wpfind(fn->args, L"dcppemu")) != NULL)
3059 {
3060 if(*emu == L'y')
3061 new->dcppemu = 1;
3062 if(*emu == L'n')
3063 new->dcppemu = 0;
3064 }
1d85f24b 3065 charset = NULL;
3066 if((wcharset = wpfind(fn->args, L"charset")) != NULL)
3067 {
3068 if((charset = icwcstombs(wcharset, "US-ASCII")) != NULL)
3069 {
3070 if(!havecharset(charset))
3071 {
3072 free(charset);
3073 charset = NULL;
3074 }
3075 }
3076 }
3077 if(charset != NULL)
3078 new->charset = charset;
3079 else
3080 new->charset = sstrdup(DCCHARSET);
d3372da9 3081 if(hubsetnick(fn, fn->mynick))
3082 fnetsetnick(fn, L"DoldaConnectUser-IN");
3083 /* IN as in Invalid Nick */
3084 return(new);
3085}
3086
3087static struct dcpeer *newdcpeer(struct socket *sk)
3088{
3089 struct dcpeer *new;
3090
3091 new = smalloc(sizeof(*new));
3092 memset(new, 0, sizeof(*new));
3093 new->transfer = NULL;
3094 getsock(sk);
3095 new->sk = sk;
1c4b02cd 3096 if(confgetint("dc", "dcppemu"))
3097 new->dcppemu = 1;
d3372da9 3098 new->next = peers;
3099 new->prev = NULL;
3100 if(peers != NULL)
3101 peers->prev = new;
3102 peers = new;
3103 numdcpeers++;
3104 return(new);
3105}
3106
3107static void freedcpeer(struct dcpeer *peer)
3108{
3109 int i;
3110 struct qcommand *qcmd;
3111
d3372da9 3112 if(peers == peer)
3113 peers = peer->next;
3114 if(peer->next != NULL)
3115 peer->next->prev = peer->prev;
3116 if(peer->prev != NULL)
3117 peer->prev->next = peer->next;
3118 if(peer->transfer != NULL)
3119 {
3120 if(peer->transfer->dir == TRNSD_UP)
3121 peer->transfer->close = 1;
3122 if(peer->transfer->dir == TRNSD_DOWN)
3123 resettransfer(peer->transfer);
d3372da9 3124 }
1e9d82b1 3125 if(peer->timeout != NULL)
3126 canceltimer(peer->timeout);
cab0b442 3127 if(peer->sk->data == peer)
3128 peer->sk->data = NULL;
3129 peer->sk->readcb = NULL;
3130 peer->sk->writecb = NULL;
3131 peer->sk->errcb = NULL;
d3372da9 3132 putsock(peer->sk);
3133 endcompress(peer);
3134 if(peer->supports != NULL)
3135 {
3136 for(i = 0; peer->supports[i] != NULL; i++)
3137 free(peer->supports[i]);
3138 free(peer->supports);
3139 }
d3372da9 3140 if(peer->inbuf != NULL)
3141 free(peer->inbuf);
3142 if(peer->key != NULL)
3143 free(peer->key);
3144 if(peer->wcsname != NULL)
3145 free(peer->wcsname);
3146 if(peer->nativename != NULL)
3147 free(peer->nativename);
1d85f24b 3148 if(peer->charset != NULL)
3149 free(peer->charset);
d3372da9 3150 if(peer->fn != NULL)
3151 putfnetnode(peer->fn);
3152 while((qcmd = ulqcmd(&peer->queue)) != NULL)
3153 freeqcmd(qcmd);
3154 free(peer);
3155 numdcpeers--;
3156}
3157
ffa81d5f 3158static void hubconnect(struct fnetnode *fn, struct socket *sk)
d3372da9 3159{
ffa81d5f
FT		 3160 struct dchub *hub;
3161
3162 sk->readcb = (void (*)(struct socket *, void *))hubread;
3163 sk->errcb = (void (*)(struct socket *, int, void *))huberr;
3164 fn->data = hub = newdchub(fn);
3165 sk->data = fn;
3166 getsock(hub->sk = sk);
d3372da9 3167 return;
3168}
3169
3170static void hubdestroy(struct fnetnode *fn)
3171{
08b74f8c 3172 int i;
d3372da9 3173 struct dchub *hub;
3174 struct qcommand *qcmd;
3175
3176 hub = (struct dchub *)fn->data;
ffa81d5f 3177 putsock(hub->sk);
d3372da9 3178 while((qcmd = ulqcmd(&hub->queue)) != NULL)
3179 freeqcmd(qcmd);
08b74f8c
FT		 3180 if(hub->supports != NULL)
3181 {
3182 for(i = 0; hub->supports[i] != NULL; i++)
3183 free(hub->supports[i]);
3184 free(hub->supports);
3185 }
d3372da9 3186 if(hub->nativename != NULL)
3187 free(hub->nativename);
3188 if(hub->nativenick != NULL)
3189 free(hub->nativenick);
1d85f24b 3190 if(hub->charset != NULL)
3191 free(hub->charset);
d3372da9 3192 if(hub->inbuf != NULL)
3193 free(hub->inbuf);
3194 free(hub);
3195}
3196
ffa81d5f
FT		 3197static void hubkill(struct fnetnode *fn)
3198{
3199 struct dchub *hub;
3200
3201 hub = (struct dchub *)fn->data;
3202 hub->sk->close = 1;
3203}
3204
d3372da9 3205static struct transferiface dctransfer =
3206{
3207 .detach = (void (*)(struct transfer *, void *))dctransdetach,
3208 .gotdata = (void (*)(struct transfer *, void *))dctransgotdata,
3209 .endofdata = (void (*)(struct transfer *, void *))dctransendofdata,
3210 .wantdata = (void (*)(struct transfer *, void *))dcwantdata
3211};
3212
3213static struct fnet dcnet =
3214{
3215 .name = L"dc",
3216 .connect = hubconnect,
3217 .destroy = hubdestroy,
ffa81d5f 3218 .kill = hubkill,
d3372da9 3219 .setnick = hubsetnick,
3220 .reqconn = hubreqconn,
3221 .sendchat = hubsendchat,
3222 .search = hubsearch,
d3372da9 3223};
3224
cab0b442 3225static void peerread(struct socket *sk, struct dcpeer *peer)
d3372da9 3226{
cab0b442 3227 char *newbuf, *p;
8cb2d75b 3228 size_t datalen, cnlen;
cab0b442 3229 struct command *cmd;
5ec60e42 3230
d3372da9 3231 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
cab0b442 3232 return;
d3372da9 3233 sizebuf2(peer->inbuf, peer->inbufdata + datalen, 1);
3234 memcpy(peer->inbuf + peer->inbufdata, newbuf, datalen);
3235 free(newbuf);
d3372da9 3236 peer->inbufdata += datalen;
9a2d6cb8 3237 if(peer->state == PEER_CMD)
d3372da9 3238 {
cab0b442 3239 p = peer->inbuf;
3240 while((peer->inbufdata > 0) && (p = memchr(peer->inbuf, '|', peer->inbufdata)) != NULL)
3241 {
3242 *(p++) = 0;
cab0b442 3243 for(cmd = peercmds; cmd->handler != NULL; cmd++)
3244 {
8cb2d75b
FT		 3245 cnlen = strlen(cmd->name);
3246 if(!strncmp(peer->inbuf, cmd->name, cnlen) && ((peer->inbuf[cnlen] == ' ') || (peer->inbuf[cnlen] == 0)))
cab0b442 3247 break;
3248 }
8cb2d75b
FT		 3249 if((cmd->limit == 0) || (peer->queue.size < cmd->limit))
3250 newqcmd(&peer->queue, peer->inbuf);
cab0b442 3251 memmove(peer->inbuf, p, peer->inbufdata -= p - peer->inbuf);
3252 if(cmd->stop)
3253 {
3254 peer->state = PEER_STOP;
3255 break;
8cb2d75b 3256 } else {
e0731d8c 3257 if(peer->queue.size > 50)
8cb2d75b 3258 sk->ignread = 1;
cab0b442 3259 }
3260 }
9a2d6cb8 3261 } else if(peer->state == PEER_TTHL) {
3262 handletthl(peer);
d3372da9 3263 }
e0731d8c
FT		 3264 if(peer->inbufdata > 500000)
3265 sk->ignread = 1;
d3372da9 3266}
3267
cab0b442 3268static void peererror(struct socket *sk, int err, struct dcpeer *peer)
d3372da9 3269{
3270 freedcpeer(peer);
3271}
3272
cab0b442 3273static void peerconnect(struct socket *sk, int err, struct fnetnode *fn)
d3372da9 3274{
3275 struct dcpeer *peer;
1c4b02cd 3276 struct dchub *hub;
d3372da9 3277
3278 if(err != 0)
3279 {
3280 putfnetnode(fn);
ff625695 3281 putsock(sk);
cab0b442 3282 return;
d3372da9 3283 }
1c4b02cd 3284 hub = fn->data;
d3372da9 3285 peer = newdcpeer(sk);
3286 peer->fn = fn;
3287 peer->accepted = 0;
1c4b02cd 3288 peer->dcppemu = hub->dcppemu;
cab0b442 3289 sk->readcb = (void (*)(struct socket *, void *))peerread;
3290 sk->errcb = (void (*)(struct socket *, int, void *))peererror;
3291 sk->data = peer;
d3372da9 3292 socksettos(sk, confgetint("fnet", "fnptos"));
d3372da9 3293 putsock(sk);
1e9d82b1 3294 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
9a2d6cb8 3295 sendmynick(peer);
3296 sendpeerlock(peer);
d3372da9 3297}
3298
cab0b442 3299static void peeraccept(struct socket *sk, struct socket *newsk, void *data)
d3372da9 3300{
3301 struct dcpeer *peer;
3302
3303 peer = newdcpeer(newsk);
3304 peer->accepted = 1;
cab0b442 3305 newsk->readcb = (void (*)(struct socket *, void *))peerread;
3306 newsk->errcb = (void (*)(struct socket *, int, void *))peererror;
3307 newsk->data = peer;
d3372da9 3308 socksettos(newsk, confgetint("fnet", "fnptos"));
1e9d82b1 3309 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 3310}
3311
3312static void updatehmlist(void)
3313{
3314 int i, lev, ic, ret;
3315 struct sharecache *node;
3316 char *buf, *buf2, numbuf[32];
3317 size_t bufsize, bufdata;
3318 int fd, ibuf;
3319
3320 bufdata = 0;
3321 buf = smalloc(bufsize = 65536);
3322 node = shareroot->child;
3323 lev = 0;
3324 while(1)
3325 {
3326 ic = 0;
1d85f24b 3327 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 3328 if((buf2 = icwcstombs(node->name, DCCHARSET)) != NULL)
3329 {
3330 for(i = 0; i < lev; i++)
3331 addtobuf(buf, 9);
3332 bufcat(buf, buf2, strlen(buf2));
3333 free(buf2);
3334 if(node->f.b.type == FILE_REG)
3335 {
3336 addtobuf(buf, '|');
dcf7a1a2 3337 sprintf(numbuf, "%ji", (intmax_t)node->size);
d3372da9 3338 bufcat(buf, numbuf, strlen(numbuf));
3339 }
3340 addtobuf(buf, 13);
3341 addtobuf(buf, 10);
3342 } else {
3343 ic = 1;
3344 }
3345 if((node->child != NULL) && !ic)
3346 {
3347 lev++;
3348 node = node->child;
3349 } else if(node->next != NULL) {
3350 node = node->next;
3351 } else {
3352 while(node->next == NULL)
3353 {
3354 lev--;
3355 node = node->parent;
3356 if(node == shareroot)
3357 break;
3358 }
3359 if(node == shareroot)
3360 break;
3361 node = node->next;
3362 }
3363 }
3364 if(hmlistname != NULL)
3365 {
3366 unlink(hmlistname);
3367 free(hmlistname);
3368 }
3369 hmlistname = sstrdup("/tmp/dc-filelist-hm-XXXXXX");
3370 if((fd = mkstemp(hmlistname)) < 0)
3371 {
3372 flog(LOG_WARNING, "could not create HM file list tempfile: %s", strerror(errno));
3373 free(hmlistname);
3374 hmlistname = NULL;
3375 } else {
3376 /*
3377 * I do not want to implement a good Huffman encoder, and it's not
3378 * like Huffman encoding actually yields any impressive results
3379 * for DC file lists anyway, so I'll just output a bogus
3380 * tree. Implement a good encoder if you want to.
3381 */
3382 write(fd, "HE3\r\0", 5);
3383 write(fd, &bufdata, 4);
3384 ibuf = 256;
3385 write(fd, &ibuf, 2);
3386 ibuf = 8;
3387 for(i = 0; i < 256; i++)
3388 {
3389 write(fd, &i, 1);
3390 write(fd, &ibuf, 1);
3391 }
3392 for(i = 0; i < 256; i++)
3393 write(fd, &i, 1);
3394 for(buf2 = buf; bufdata > 0;)
3395 {
3396 if((ret = write(fd, buf2, bufdata)) < 0)
3397 {
3398 flog(LOG_WARNING, "could not write file list: %s", strerror(errno));
3399 break;
3400 }
3401 bufdata -= ret;
3402 buf2 += ret;
3403 }
3404 close(fd);
3405 }
3406 free(buf);
3407}
3408
3409static struct xmlent
3410{
3411 wchar_t c;
3412 wchar_t *ent;
3413} entities[] = {
3414 {L'&', L"&amp;"},
3415 {L'\"', L"&#34;"},
3416/* {L'\'', L"&quot;"}, Emulate DC++ escaping by omitting this. */
3417 {L'\0', NULL}
3418};
3419
3420static wchar_t *escapexml(wchar_t *src)
3421{
3422 static wchar_t *buf = NULL;;
3423 int ret, c;
3424 wchar_t nbuf[32];
3425 size_t bufsize, bufdata;
3426 struct xmlent *ent;
3427
3428 if(buf != NULL)
3429 free(buf);
3430 buf = NULL;
3431 bufsize = bufdata = 0;
3432 for(; *src != L'\0'; src++)
3433 {
3434 c = wctob(*src);
3435 if((c > 0) && (c < 32))
3436 {
3437 bufcat(buf, L"&#", 2);
3438 ret = swprintf(nbuf, (sizeof(nbuf) / sizeof(*nbuf)), L"%i", c);
3439 bufcat(buf, nbuf, ret);
3440 addtobuf(buf, L';');
3441 } else {
3442 for(ent = entities; ent->ent != NULL; ent++)
3443 {
3444 if(ent->c == *src)
3445 {
3446 bufcat(buf, ent->ent, wcslen(ent->ent));
3447 break;
3448 }
3449 }
3450 if(ent->ent == NULL)
3451 addtobuf(buf, *src);
3452 }
3453 }
3454 addtobuf(buf, L'\0');
3455 return(buf);
3456}
3457
3458static void updatexmllist(void)
3459{
3460 int i, fd, lev;
3461 FILE *fs;
3462 char cidbuf[14], *namebuf;
3463 char *hashbuf;
3464 struct sharecache *node;
3465
3466 if(xmllistname != NULL)
3467 {
3468 unlink(xmllistname);
3469 free(xmllistname);
3470 }
3471 xmllistname = sstrdup("/tmp/dc-filelist-dcxml-XXXXXX");
3472 if((fd = mkstemp(xmllistname)) < 0)
3473 {
3474 flog(LOG_WARNING, "could not create XML file list tempfile: %s", strerror(errno));
3475 free(xmllistname);
3476 xmllistname = NULL;
3477 return;
3478 }
3479 if((fs = fdopen(fd, "w")) == NULL)
3480 {
3481 flog(LOG_WARNING, "could not fdopen XML list fd %i: %s", fd, strerror(errno));
3482 unlink(xmllistname);
3483 free(xmllistname);
3484 xmllistname = NULL;
3485 close(fd);
3486 return;
3487 }
3488 fprintf(fs, "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?>\r\n");
3489 for(i = 0; i < sizeof(cidbuf) - 1; i++)
3490 cidbuf[i] = (rand() % ('Z' - 'A' + 1)) + 'A';
3491 cidbuf[i] = 0;
1c4b02cd 3492 if(confgetint("dc", "dcppemu"))
3493 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"DC++ 0.674\">\r\n", cidbuf);
3494 else
3495 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"%s\">\r\n", cidbuf, "DoldaConnect" VERSION);
d3372da9 3496
3497 node = shareroot->child;
3498 lev = 0;
3499 while(1)
3500 {
3501 if((namebuf = icswcstombs(escapexml(node->name), "UTF-8", NULL)) != NULL)
3502 {
3503 for(i = 0; i < lev; i++)
3504 fputc('\t', fs);
3505 if(node->child != NULL)
3506 {
3507 fprintf(fs, "<Directory Name=\"%s\">\r\n", namebuf);
3508 node = node->child;
3509 lev++;
3510 continue;
3511 } else {
dcf7a1a2 3512 fprintf(fs, "<File Name=\"%s\" Size=\"%ji\"", namebuf, (intmax_t)node->size);
d3372da9 3513 if(node->f.b.hastth)
3514 {
3515 hashbuf = base32encode(node->hashtth, 24);
3516 fprintf(fs, " TTH=\"%.39s\"", hashbuf);
3517 free(hashbuf);
3518 }
3519 fprintf(fs, "/>\r\n");
3520 }
3521 while(node->next == NULL)
3522 {
3523 node = node->parent;
3524 if(node == shareroot)
3525 {
3526 break;
3527 } else {
3528 lev--;
3529 for(i = 0; i < lev; i++)
3530 fputc('\t', fs);
3531 fprintf(fs, "</Directory>\r\n");
3532 }
3533 }
3534 if(node == shareroot)
3535 break;
3536 node = node->next;
3537 }
3538 }
3539
1c4b02cd 3540 if(confgetint("dc", "dcppemu"))
3541 fprintf(fs, "</FileListing>");
3542 else
3543 fprintf(fs, "</FileListing>\r\n");
d3372da9 3544 fclose(fs);
3545}
3546
3547static void updatexmlbz2list(void)
3548{
3549 int err, fd;
3550 FILE *in;
3551 FILE *real;
3552 BZFILE *out;
3553 char buf[1024];
3554 size_t bufdata;
3555
3556 if(xmllistname == NULL)
3557 return;
3558 if((in = fopen(xmllistname, "r")) == NULL)
3559 {
3560 flog(LOG_WARNING, "could not open XML file list for bzipping: %s", strerror(errno));
3561 return;
3562 }
3563 if(xmlbz2listname != NULL)
3564 {
3565 unlink(xmlbz2listname);
3566 free(xmlbz2listname);
3567 }
3568 xmlbz2listname = sstrdup("/tmp/dc-filelist-dcxmlbz2-XXXXXX");
3569 if((fd = mkstemp(xmlbz2listname)) < 0)
3570 {
3571 flog(LOG_WARNING, "could not create bzipped XML file list tempfile: %s", strerror(errno));
3572 free(xmlbz2listname);
3573 xmlbz2listname = NULL;
3574 fclose(in);
3575 return;
3576 }
3577 if((real = fdopen(fd, "w")) == NULL)
3578 {
3579 flog(LOG_WARNING, "could not fdopen bzipped XML list fd %i: %s", fd, strerror(errno));
3580 close(fd);
3581 unlink(xmlbz2listname);
3582 free(xmlbz2listname);
3583 xmlbz2listname = NULL;
3584 fclose(in);
3585 return;
3586 }
3587 out = BZ2_bzWriteOpen(&err, real, 9, 0, 0);
3588 if(err != BZ_OK)
3589 {
3590 flog(LOG_WARNING, "could not open bzip2 stream from XML list");
3591 fclose(real);
3592 unlink(xmlbz2listname);
3593 free(xmlbz2listname);
3594 xmlbz2listname = NULL;
3595 fclose(in);
3596 return;
3597 }
3598 while(!feof(in))
3599 {
3600 bufdata = fread(buf, 1, sizeof(buf), in);
3601 BZ2_bzWrite(&err, out, buf, bufdata);
3602 }
3603 fclose(in);
3604 BZ2_bzWriteClose(&err, out, 0, NULL, NULL);
3605 fclose(real);
3606}
3607
6305c428 3608static void listtimercb(int cancelled, void *uudata)
3609{
3610 listwritetimer = NULL;
3611 if(!cancelled)
3612 updatelists(1);
3613}
3614
3615static void updatelists(int now)
d3372da9 3616{
000ca725 3617 if((hmlistname == NULL) || (xmllistname == NULL) || (xmlbz2listname == NULL))
3618 now = 1;
6305c428 3619 if(!now)
3620 {
3621 if(listwritetimer == NULL)
ddb3658e 3622 listwritetimer = timercallback(ntime() + confgetint("cli", "hashwritedelay"), listtimercb, NULL);
6305c428 3623 return;
3624 }
3625 if(listwritetimer != NULL)
3626 canceltimer(listwritetimer);
d3372da9 3627 updatehmlist();
3628 updatexmllist();
3629 updatexmlbz2list();
6305c428 3630}
3631
3632static int shareupdate(unsigned long long uusharesize, void *data)
3633{
3634 updatelists(0);
d3372da9 3635 return(0);
3636}
3637
7395a37f
FT		 3638static char *quotestr(char *str)
3639{
3640 unsigned char *buf;
3641 unsigned char *p;
3642 size_t bufsize, bufdata;
3643 wchar_t *wbuf;
3644 static char *enc = NULL;
3645 size_t encsize, encdata;
3646
3647 buf = NULL;
3648 bufsize = bufdata = 0;
3649 for(p = (unsigned char *)str; *p; p++)
3650 {
3651 if(*p == '\b')
3652 bufcat(buf, "\\b", 2);
3653 else if(*p == '\t')
3654 bufcat(buf, "\\t", 2);
3655 else if(*p == '\n')
3656 bufcat(buf, "\\n", 2);
3657 else if(*p == '\r')
3658 bufcat(buf, "\\r", 2);
3659 else if(*p == '\\')
3660 bufcat(buf, "\\\\", 2);
3661 else if(*p >= 32)
3662 addtobuf(buf, *p);
3663 else
3664 bprintf(buf, "\\x%02x", *p);
3665 }
3666 addtobuf(buf, 0);
3667 if(enc != NULL)
3668 free(enc);
3669 enc = NULL;
3670 if((wbuf = icmbstowcs((char *)buf, DCCHARSET)) != NULL)
3671 {
3672 enc = icwcstombs(wbuf, NULL);
3673 free(wbuf);
3674 }
3675 if(enc == NULL)
3676 {
3677 encsize = encdata = 0;
3678 for(p = buf; *p; p++) {
3679 if(*p < 128)
3680 addtobuf(enc, *p);
3681 else
3682 bprintf(buf, "\\x%x", *p);
3683 }
3684 }
3685 free(buf);
3686 return(enc);
3687}
3688
c1928259 3689static void logunimpl(char *list, char *cmd, char *args)
7395a37f
FT		 3690{
3691 FILE *log;
3692
3693 if((log = fopen("/tmp/dc-unimpl", "a")) == NULL)
3694 {
3695 flog(LOG_WARNING, "could not open unimpl log: %s", strerror(errno));
3696 return;
3697 }
c1928259
FT		 3698 fputs(list, log);
3699 fputc('\t', log);
7395a37f
FT		 3700 fputs(quotestr(cmd), log);
3701 if(args != NULL)
3702 {
3703 fputc('\t', log);
3704 fputs(quotestr(args), log);
3705 }
3706 fputc('\n', log);
3707 fclose(log);
3708}
3709
d3372da9 3710static void dispatchcommand(struct qcommand *qcmd, struct command *cmdlist, struct socket *sk, void *data)
3711{
3712 char *p;
3713 struct command *cmd;
3714
3715 if((p = strchr(qcmd->string, ' ')) != NULL)
3716 *(p++) = 0;
3717 for(cmd = cmdlist; cmd->handler != NULL; cmd++)
3718 {
3719 if(!strcmp(cmd->name, qcmd->string))
3720 break;
3721 }
3722 if(cmd->handler != NULL)
c1928259 3723 {
d3372da9 3724 cmd->handler(sk, data, qcmd->string, p);
c1928259
FT		 3725 } else if(confgetint("dc", "logunimpl")) {
3726 if(cmdlist == hubcmds)
3727 logunimpl("hub", qcmd->string, p);
3728 else if(cmdlist == peercmds)
3729 logunimpl("peer", qcmd->string, p);
3730 else
3731 logunimpl("other?!", qcmd->string, p);
3732 }
d3372da9 3733}
3734
3735static int run(void)
3736{
3737 struct fnetnode *fn, *nextfn;
3738 struct dchub *hub;
3739 struct dcpeer *peer, *nextpeer;
3740 struct qcommand *qcmd;
e0731d8c 3741 int ret, quota;
d3372da9 3742
3743 ret = 0;
e0731d8c 3744 quota = 20;
d3372da9 3745 for(fn = fnetnodes; fn != NULL; fn = nextfn)
3746 {
3747 nextfn = fn->next;
3748 if(fn->fnet != &dcnet)
3749 continue;
3750 if(fn->data == NULL)
3751 continue;
3752 hub = (struct dchub *)fn->data;
e0731d8c 3753 while((quota > 0) && ((qcmd = ulqcmd(&hub->queue)) != NULL))
d3372da9 3754 {
3755 if(*qcmd->string == '$')
3756 {
ffa81d5f
FT		 3757 if((hub->sk != NULL) && (hub->sk->state == SOCK_EST))
3758 dispatchcommand(qcmd, hubcmds, hub->sk, fn);
d3372da9 3759 } else if(*qcmd->string != 0) {
ffa81d5f 3760 hubrecvchat(hub->sk, fn, NULL, qcmd->string);
d3372da9 3761 }
3762 freeqcmd(qcmd);
3763 ret = 1;
e0731d8c 3764 quota--;
d3372da9 3765 }
e0731d8c
FT		 3766 if(hub->queue.size < 1000)
3767 hub->sk->ignread = 0;
3768 if(quota < 1)
3769 break;
d3372da9 3770 }
e0731d8c 3771 quota = 20;
2bf4942d 3772 for(peer = peers; peer != NULL; peer = peer->next)
d3372da9 3773 {
2bf4942d 3774 while(!peer->close && (quota > 0) && ((qcmd = ulqcmd(&peer->queue)) != NULL))
d3372da9 3775 {
1e9d82b1 3776 if(peer->timeout != NULL)
3777 canceltimer(peer->timeout);
3778 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 3779 if(*qcmd->string == '$')
3780 dispatchcommand(qcmd, peercmds, peer->sk, peer);
3781 freeqcmd(qcmd);
3782 ret = 1;
e0731d8c 3783 quota--;
d3372da9 3784 }
e0731d8c
FT		 3785 if((peer->queue.size < 50) && (peer->inbufdata < 500000))
3786 peer->sk->ignread = 0;
3787 if(quota < 1)
3788 break;
d3372da9 3789 }
2bf4942d
FT		 3790 for(peer = peers; peer != NULL; peer = nextpeer)
3791 {
3792 nextpeer = peer->next;
3793 if(peer->close)
3794 freedcpeer(peer);
3795 }
d3372da9 3796 return(ret);
3797}
3798
3799static void preinit(int hup)
3800{
3801 if(hup)
3802 return;
3803 regfnet(&dcnet);
3804}
3805
3806static int updateudpport(struct configvar *var, void *uudata)
3807{
3808 struct sockaddr_in addr;
3809 struct socket *newsock;
3810
3811 memset(&addr, 0, sizeof(addr));
3812 addr.sin_family = AF_INET;
3813 addr.sin_port = htons(var->val.num);
3814 if((newsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3815 {
3816 flog(LOG_WARNING, "could not create new DC UDP socket, reverting to old: %s", strerror(errno));
3817 return(0);
3818 }
cab0b442 3819 newsock->readcb = udpread;
d3372da9 3820 if(udpsock != NULL)
3821 putsock(udpsock);
3822 udpsock = newsock;
3823 return(0);
3824}
3825
3826static int updatetcpport(struct configvar *var, void *uudata)
3827{
3828 struct sockaddr_in addr;
3829 struct socket *newsock;
3830
3831 memset(&addr, 0, sizeof(addr));
3832 addr.sin_family = AF_INET;
3833 addr.sin_port = htons(var->val.num);
3834 if((newsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3835 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3836 if(tcpsock != NULL)
3837 putsock(tcpsock);
3838 tcpsock = newsock;
3839 return(0);
3840}
3841
3842static int init(int hup)
3843{
3844 struct sockaddr_in addr;
3845
3846 if(!hup)
3847 {
3848 GCBREG(sharechangecb, shareupdate, NULL);
3849 if(udpsock != NULL)
3850 putsock(udpsock);
3851 if(tcpsock != NULL)
3852 putsock(tcpsock);
3853 addr.sin_family = AF_INET;
3854 memset(&addr.sin_addr, 0, sizeof(addr.sin_addr));
3855 addr.sin_port = htons(confgetint("dc", "udpport"));
3856 if((udpsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3857 {
3858 flog(LOG_CRIT, "could not create DC UDP socket: %s", strerror(errno));
3859 return(1);
3860 }
cab0b442 3861 udpsock->readcb = udpread;
d3372da9 3862 addr.sin_port = htons(confgetint("dc", "tcpport"));
3863 if((tcpsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3864 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3865 CBREG(confgetvar("dc", "udpport"), conf_update, updateudpport, NULL, NULL);
3866 CBREG(confgetvar("dc", "tcpport"), conf_update, updatetcpport, NULL, NULL);
3867 CBREG(confgetvar("net", "mode"), conf_update, updatetcpport, NULL, NULL);
3868 }
3869 return(0);
3870}
3871
3872static void terminate(void)
3873{
3874 if(hmlistname != NULL)
3875 {
3876 unlink(hmlistname);
3877 free(hmlistname);
3878 }
3879 if(xmllistname != NULL)
3880 {
3881 unlink(xmllistname);
3882 free(xmllistname);
3883 }
3884 if(xmlbz2listname != NULL)
3885 {
3886 unlink(xmlbz2listname);
3887 free(xmlbz2listname);
3888 }
3889}
3890
3891static struct configvar myvars[] =
3892{
d9f89ef5 3893 /** Specifies the share description reported to other DC users. */
d3372da9 3894 {CONF_VAR_STRING, "desc", {.str = L""}},
d9f89ef5 3895 /** Specifies the speed reported to other DC users. Normal values
3896 * are 28.8Kbps, 33.6Kbps, 56Kbps, Satellite, ISDN, DSL, Cable,
3897 * LAN(T1) or LAN(T3)*/
d3372da9 3898 {CONF_VAR_STRING, "speedstring", {.str = L"LAN(T1)"}},
d9f89ef5 3899 /** The e-mail address to report to other DC users. */
d3372da9 3900 {CONF_VAR_STRING, "email", {.str = L"spam@spam.org"}},
d9f89ef5 3901 /** Specifies a specific UDP port to use for DC search results. If
3902 * left unspecified, a port is allocated dynamically. Useful for
3903 * NAT routers (see also the net.visibleipv4 address for those
3904 * cases). */
d3372da9 3905 {CONF_VAR_INT, "udpport", {.num = 0}},
d9f89ef5 3906 /** Specifies a specific TCP port to use for DC peer
3907 * connections. If left unspecified, a port is allocated
3908 * dynamically. Useful for NAT routers (see also the
3909 * net.visibleipv4 address for those cases). */
d3372da9 3910 {CONF_VAR_INT, "tcpport", {.num = 0}},
d9f89ef5 3911 /** If set to true, doldacond will do its best to emulate DC++
3912 * (currently v0.674). This should be left off if at all possible,
3913 * since turning it on will violate the rules of most hubs and
3914 * thus give hub owners an actual reason to kick you if it is
3915 * detected. It might be needed for some of the more bone-headed
3916 * hub owners, though. Note that DC++ emulation can also be turned
3917 * on or off for individual hubs, overriding this setting. */
1c4b02cd 3918 {CONF_VAR_BOOL, "dcppemu", {.num = 0}},
7395a37f
FT		 3919 /** Use for debugging. If set to true, doldacond will log all
3920 * unknown commands it receives, and their arguments, to
3921 * /tmp/dc-unimpl. */
3922 {CONF_VAR_BOOL, "logunimpl", {.num = 0}},
4b544330
FT		 3923 /** If set to true, doldacond will hide its support for deflate
3924 * compression of transfers from other clients, so that they will
3925 * not request compressed uploads. Compressed transfers may
3926 * consume a non-trivial amount of CPU time on slower machines. */
3927 {CONF_VAR_BOOL, "hidedeflate", {.num = 0}},
d3372da9 3928 {CONF_VAR_END}
3929};
3930
3931static struct module me =
3932{
3933 .conf =
3934 {
3935 .vars = myvars
3936 },
3937 .preinit = preinit,
3938 .init = init,
3939 .run = run,
3940 .terminate = terminate,
3941 .name = "dc"
3942};
3943
3944MODULE(me)
Dolda Connect