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Merge branch 'master' of git.dolda2000.com:/srv/git/r/doldaconnect
[doldaconnect.git] / daemon / fnet-dc.c
CommitLineData
d3372da9 1/*
2 * Dolda Connect - Modular multiuser Direct Connect-style client
302a2600 3 * Copyright (C) 2004 Fredrik Tolf <fredrik@dolda2000.com>
d3372da9 4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18*/
19#include <stdlib.h>
20#include <stdio.h>
21#include <wchar.h>
d3372da9 22#include <unistd.h>
23#include <fcntl.h>
24#include <string.h>
25#include <netinet/in.h>
26#include <arpa/inet.h>
d3372da9 27#include <wctype.h>
28#include <time.h>
29#include <errno.h>
30#include <bzlib.h>
31#include <zlib.h>
32#include <sys/stat.h>
33
34#ifdef HAVE_CONFIG_H
35#include <config.h>
36#endif
37#include "filenet.h"
38#include "log.h"
39#include "module.h"
40#include "utils.h"
41#include "client.h"
42#include "transfer.h"
43#include "sysevents.h"
44#include "net.h"
8b17e919 45#include <tiger.h>
d3372da9 46
47/*
48 * The Direct Connect protocol is extremely ugly. Thus, this code must
49 * also be a bit ugly in certain places. Please forgive me. =/
50 *
51 * This also means that there might be some pieces of the code that
52 * look completely illogical to you, and you think that you may make
53 * them much neater/better. However, in many cases it might just be
54 * that it's required to cope with some oddity of the protocol, such
55 * as the amazingly ugly delayed key response in the peer protocol.
56 */
57
58/* I assume this is the correct character set to use for DC,
59 * considering it was developed without i18n support under Windows */
60#define DCCHARSET "windows-1252"
61
62#ifdef DCPP_MASQUERADE
63/*
64 * I honestly don't want to pretend being a client that I'm not, but
65 * there are so many hubs that simply do not accept any clients
66 * outside their whitelists, for no obvious reasons, so I feel that I
67 * am left with little choice. Anyhow, as long as I actually support
68 * all the features that my faked DC++ version does, there should be
69 * very little harm done.
70 */
71#define DCIDTAG "++"
72#define DCIDTAGV "0.674"
73#define DCIDFULL "DC++ 0.674"
74#else
75#define DCIDTAG "Dolda"
76#define DCIDTAGV VERSION
77#define DCIDFULL "DoldaConnect " VERSION
78#endif
79
80#define PEER_CMD 0
9a2d6cb8 81#define PEER_STOP 1
82#define PEER_TRNS 2
83#define PEER_SYNC 3
84#define PEER_TTHL 4
d3372da9 85
86#define CPRS_NONE 0
87#define CPRS_ZLIB 1
88
89struct command
90{
91 char *name;
92 void (*handler)(struct socket *sk, void *data, char *cmd, char *args);
9a2d6cb8 93 int stop;
d3372da9 94};
95
96struct qcommand
97{
98 struct qcommand *next;
99 char *string;
100};
101
102struct dchub
103{
104 char *inbuf;
105 size_t inbufdata, inbufsize;
106 struct qcommand *queue;
1c4b02cd 107 int extended, dcppemu;
1d85f24b 108 char *charset;
d3372da9 109 char *nativename;
110 char *nativenick;
08b74f8c 111 char **supports;
d3372da9 112};
113
114struct dcexppeer
115{
116 struct dcexppeer *next, *prev;
117 char *nick;
118 struct fnetnode *fn;
119 struct timer *expire;
120};
121
122struct dcpeer
123{
124 struct dcpeer *next, *prev;
125 struct socket *sk;
126 struct fnetnode *fn;
127 char *inbuf;
128 size_t inbufdata, inbufsize;
9a2d6cb8 129 size_t curread, totalsize;
d3372da9 130 int freeing;
1e9d82b1 131 struct timer *timeout;
d3372da9 132 struct qcommand *queue;
133 struct transfer *transfer;
134 int state;
135 int ptclose; /* Close after transfer is complete */
136 int accepted; /* If false, we connected, otherwise, we accepted */
1c4b02cd 137 int extended, dcppemu;
d3372da9 138 int direction; /* Using the constants from transfer.h */
139 int compress;
df873cd0 140 int hascurpos, fetchingtthl, notthl;
9a2d6cb8 141 struct tigertreehash tth;
1d85f24b 142 char *charset;
d3372da9 143 void *cprsdata;
d3372da9 144 char *key;
145 char *nativename;
146 char **supports;
147 wchar_t *wcsname;
148};
149
150static struct fnet dcnet;
151static struct transferiface dctransfer;
152static struct socket *udpsock = NULL;
153static struct socket *tcpsock = NULL;
154static struct dcpeer *peers = NULL;
155int numdcpeers = 0;
156static struct dcexppeer *expected = NULL;
157static char *hmlistname = NULL;
158static char *xmllistname = NULL;
159static char *xmlbz2listname = NULL;
6305c428 160static struct timer *listwritetimer = NULL;
d3372da9 161
cab0b442 162static void peerconnect(struct socket *sk, int err, struct fnetnode *fn);
d3372da9 163static void freedcpeer(struct dcpeer *peer);
cab0b442 164static void transread(struct socket *sk, struct dcpeer *peer);
165static void transerr(struct socket *sk, int err, struct dcpeer *peer);
166static void transwrite(struct socket *sk, struct dcpeer *peer);
d3372da9 167static void updatehmlist(void);
168static void updatexmllist(void);
169static void updatexmlbz2list(void);
9a2d6cb8 170static void requestfile(struct dcpeer *peer);
6305c428 171static void updatelists(int now);
d3372da9 172
173static int reservedchar(unsigned char c)
174{
175 return((c == 0) || (c == 5) || (c == 124) || (c == 96) || (c == 126) || (c == 36));
176}
177
178/* Oh, how I despise having to do this... */
179static char *dcmakekey(char *lock)
180{
181 int i, len, offset;
182 char *buf, *key;
183 char save;
184
185 buf = smalloc(strlen(lock));
186 save = 5;
187 len = 0;
188 for(i = 0; lock[i]; i++)
189 {
190 buf[i] = lock[i] ^ save;
191 buf[i] = ((buf[i] & 0x0F) << 4) | ((buf[i] & 0xF0) >> 4);
192 save = lock[i];
193 if((i != 0) && reservedchar(buf[i]))
194 len += 10;
195 else
196 len++;
197 }
198 buf[0] ^= buf[i - 1];
199 if(reservedchar(buf[0]))
200 len += 10;
201 else
202 len++;
203 key = smalloc(len + 1);
204 offset = 0;
205 for(i = 0; lock[i] != 0; i++)
206 {
207 if(reservedchar(buf[i]))
208 offset += sprintf(key + offset, "/%%DCN%03i%%/", buf[i]);
209 else
210 key[offset++] = buf[i];
211 }
212 key[offset] = 0;
213 free(buf);
214 return(key);
215}
216
9a2d6cb8 217static char *pathnmdc2adc(char *path)
218{
219 char *ret;
220 size_t retsize, retdata;
221
222 if(!strcmp(path, "files.xml") || !strcmp(path, "files.xml.bz2") || !strcmp(path, "MyList.DcLst"))
223 return(sstrdup(path));
224 ret = NULL;
225 retsize = retdata = 0;
226 addtobuf(ret, '/');
227 for(; *path; path++)
228 {
229 if(*path == '\\')
230 addtobuf(ret, '/');
231 else
232 addtobuf(ret, *path);
233 }
234 addtobuf(ret, 0);
235 return(ret);
236}
237
238static int isdchash(struct hash *hash)
239{
240 if(wcscmp(hash->algo, L"TTH"))
241 return(0);
242 if(hash->len != 24)
243 return(0);
244 return(1);
245}
246
08b74f8c
FT		 247/*
248 * Uncomment when used!
249
250static int hubsupports(struct dchub *hub, char *cap)
251{
252 char **p;
253
254 if(hub->supports == NULL)
255 return(0);
256 for(p = hub->supports; *p != NULL; p++)
257 {
258 if(!strcasecmp(*p, cap))
259 return(1);
260 }
261 return(0);
262}
263*/
264
9a2d6cb8 265static int supports(struct dcpeer *peer, char *cap)
266{
267 char **p;
268
269 if(peer->supports == NULL)
270 return(0);
271 for(p = peer->supports; *p != NULL; p++)
272 {
273 if(!strcasecmp(*p, cap))
274 return(1);
275 }
276 return(0);
277}
278
d3372da9 279static void endcompress(struct dcpeer *peer)
280{
281 if(peer->compress == CPRS_ZLIB)
282 {
283 deflateEnd(peer->cprsdata);
284 free(peer->cprsdata);
285 }
286 peer->compress = CPRS_NONE;
287}
288
289static void initcompress(struct dcpeer *peer, int algo)
290{
291 int ret;
292
293 endcompress(peer);
294 peer->compress = algo;
295 if(algo == CPRS_ZLIB)
296 {
297 peer->cprsdata = smalloc(sizeof(z_stream));
298 memset(peer->cprsdata, 0, sizeof(z_stream));
299 if((ret = deflateInit(peer->cprsdata, 3)) != Z_OK)
300 {
301 flog(LOG_CRIT, "Aiya! zlib refuses to init (%i)!", ret);
302 abort();
303 }
304 }
305}
306
307static void unquote(wchar_t *in)
308{
309 wchar_t *p, *p2, nc;
310
311 for(p = in; *p != L'\0'; p++)
312 {
313 if(*p == L'&')
314 {
315 for(p2 = p + 1; (*p2 != L'\0') && (*p2 != L';') && (*p2 != L'&'); p2++);
316 if(*p2 == L'&')
317 continue;
318 if(*p2 == L'\0')
319 return;
320 *p2 = L'\0';
321 nc = L'\0';
322 if(!wcscmp(p + 1, L"amp"))
323 {
324 nc = L'&';
325 } else if(p[1] == L'#') {
326 nc = ucptowc(wcstol(p + 2, NULL, 10));
327 }
328 if(nc == L'\0')
329 {
330 *p2 = L';';
331 p = p2;
332 continue;
333 }
334 *p = nc;
335 memmove(p + 1, p2 + 1, (wcslen(p2 + 1) + 1) * sizeof(wchar_t));
336 }
337 }
338}
339
340static void freeexppeer(struct dcexppeer *ep)
341{
342 if(ep->next != NULL)
343 ep->next->prev = ep->prev;
344 if(ep->prev != NULL)
345 ep->prev->next = ep->next;
346 if(ep == expected)
347 expected = ep->next;
348 free(ep->nick);
349 putfnetnode(ep->fn);
350 if(ep->expire != NULL)
351 canceltimer(ep->expire);
352 free(ep);
353}
354
355static void exppeerexpire(int cancelled, struct dcexppeer *ep)
356{
357 ep->expire = NULL;
358 if(!cancelled)
359 freeexppeer(ep);
360}
361
362static struct dcexppeer *expectpeer(char *nick, struct fnetnode *fn)
363{
364 struct dcexppeer *ep;
365
366 ep = smalloc(sizeof(*ep));
367 ep->nick = sstrdup(nick);
368 getfnetnode(ep->fn = fn);
369 ep->expire = timercallback(ntime() + 300, (void (*)(int, void *))exppeerexpire, ep);
370 ep->next = expected;
371 ep->prev = NULL;
372 if(expected != NULL)
373 expected->prev = ep;
374 expected = ep;
375 return(ep);
376}
377
378static struct qcommand *newqcmd(struct qcommand **queue, char *string)
379{
380 struct qcommand *new;
381
382 while(*queue != NULL)
383 queue = &(*queue)->next;
384 new = smalloc(sizeof(*new));
385 new->string = sstrdup(string);
386 new->next = *queue;
387 *queue = new;
388 return(new);
389}
390
391static struct qcommand *ulqcmd(struct qcommand **queue)
392{
393 struct qcommand *qcmd;
394
395 if((qcmd = *queue) == NULL)
396 return(NULL);
397 *queue = qcmd->next;
398 return(qcmd);
399}
400
401static void freeqcmd(struct qcommand *qcmd)
402{
403 free(qcmd->string);
404 free(qcmd);
405}
406
407static void hubrecvchat(struct socket *sk, struct fnetnode *fn, char *from, char *string)
408{
409 wchar_t *chat, *wfrom, *wpeer;
410 char *p, *end;
411 struct fnetpeer *peer;
1d85f24b 412 struct dchub *hub;
d3372da9 413
1d85f24b 414 hub = fn->data;
d3372da9 415 end = string + strlen(string);
416 while((p = strchr(string, 13)) != NULL)
417 memmove(p, p + 1, (end-- - p));
418 if(from != NULL)
419 {
420 if((strlen(string) > strlen(from) + 2) && (*string == '<') && !memcmp(string + 1, from, strlen(from)) && (*(string + strlen(from) + 1) == '>'))
421 string += strlen(from) + 2;
1d85f24b 422 if((wfrom = icmbstowcs(from, hub->charset)) == NULL)
d3372da9 423 return;
424 wpeer = swcsdup(wfrom);
425 } else {
426 wfrom = NULL;
427 wpeer = NULL;
428 if(*string == '<')
429 {
430 for(p = string + 1; *p; p++)
431 {
432 if((*p == ' ') || (*p == '>'))
433 break;
434 }
435 if(*p == '>')
436 {
437 *(p++) = 0;
438 if(*p == ' ')
439 p++;
1d85f24b 440 if((wpeer = icmbstowcs(string + 1, hub->charset)) == NULL)
d3372da9 441 return;
442 string = p;
443 }
444 }
445 if(wpeer == NULL)
446 wpeer = swcsdup(L"");
447 }
1d85f24b 448 if((chat = icmbstowcs(string, hub->charset)) == NULL)
d3372da9 449 {
450 if(wfrom != NULL)
451 free(wfrom);
452 free(wpeer);
453 return;
454 }
455 unquote(chat);
456 if(wfrom != NULL)
457 {
458 if((peer = fnetfindpeer(fn, wfrom)) == NULL) /* Assume public chat */
459 fnethandlechat(fn, 1, wfrom, wpeer, chat);
460 else
461 fnethandlechat(fn, 0, wfrom, wpeer, chat);
462 } else {
463 fnethandlechat(fn, 1, L"", wpeer, chat);
464 }
465 if(wfrom != NULL)
466 free(wfrom);
467 free(wpeer);
468 free(chat);
469}
470
1e9d82b1 471static void peertimeout(int cancelled, struct dcpeer *peer)
472{
473 peer->timeout = NULL;
474 if(cancelled)
475 return;
476 freedcpeer(peer);
477}
478
d3372da9 479static void sendadc(struct socket *sk, char *arg)
480{
481 char *buf;
482 size_t bufsize, bufdata;
483
484 buf = NULL;
485 bufsize = bufdata = 0;
486 addtobuf(buf, ' ');
487 for(; *arg; arg++)
488 {
489 if(*arg == ' ')
490 {
491 bufcat(buf, "\\s", 2);
492 } else if(*arg == '\n') {
493 bufcat(buf, "\\n", 2);
494 } else if(*arg == '\\') {
495 bufcat(buf, "\\\\", 2);
496 } else {
497 addtobuf(buf, *arg);
498 }
499 }
500 sockqueue(sk, buf, bufdata);
501 free(buf);
502}
503
504static void sendadcf(struct socket *sk, char *arg, ...)
505{
506 char *buf;
507 va_list args;
508
509 va_start(args, arg);
510 buf = vsprintf2(arg, args);
511 va_end(args);
512 if(buf == NULL)
513 return;
514 sendadc(sk, buf);
515 free(buf);
516}
517
518static char **parseadc(char *args)
519{
520 char **retbuf;
521 size_t retbufsize, retbufdata;
522 char *buf;
523 size_t bufsize, bufdata;
524 int state;
525
526 retbuf = NULL;
527 buf = NULL;
528 retbufsize = retbufdata = bufsize = bufdata = 0;
529 state = 0;
530 while(state != 3)
531 {
532 switch(state)
533 {
534 case 0:
535 if(*args == 0)
536 state = 3;
537 else if(*args != ' ')
538 state = 1;
539 break;
540 case 1:
541 if((*args == ' ') || (*args == 0))
542 {
543 addtobuf(buf, 0);
544 addtobuf(retbuf, buf);
545 buf = NULL;
546 bufsize = bufdata = 0;
547 if(*args == 0)
548 state = 3;
549 } else if(*args == '\\') {
550 state = 2;
551 } else {
552 addtobuf(buf, *args);
553 }
554 args++;
555 break;
556 case 2:
557 if(*args == 0)
558 {
559 if(buf != NULL)
560 free(buf);
561 addtobuf(retbuf, NULL);
562 freeparr(retbuf);
563 return(NULL);
f24d5cfb 564 } else if((*args == 's') || (*args == ' ')) {
d3372da9 565 addtobuf(buf, ' ');
566 } else if(*args == 'n') {
567 addtobuf(buf, '\n');
568 } else if(*args == '\\') {
569 addtobuf(buf, '\\');
570 }
a478552c 571 args++;
d3372da9 572 state = 1;
a478552c 573 break;
d3372da9 574 }
575 }
576 if(buf != NULL)
577 free(buf);
578 addtobuf(retbuf, NULL);
579 return(retbuf);
580}
581
582/* Macros useful in command handlers */
583#define skipspace(s) ({if(((s) = strchr((s), ' ')) == NULL) return; else (s)++;})
584#define qstr(sk, str) sockqueue(sk, str, strlen(str))
585#define qstrf(sk, strandargs...) \
586do { \
587 char *__buf__; \
588 if((__buf__ = sprintf2(strandargs)) != NULL) { \
589 sockqueue(sk, __buf__, strlen(__buf__)); \
590 free(__buf__); \
591 } \
592} while(0)
593
594static char *tr(char *str, char *trans)
595{
596 char *p;
597
598 for(; *trans; trans += 2)
599 {
600 for(p = strchr(str, trans[0]); p != NULL; p = strchr(p, trans[0]))
601 *p = trans[1];
602 }
603 return(str);
604}
605
9a2d6cb8 606static char *getadcid(struct dcpeer *peer)
607{
608 char *buf;
609 char *ret;
d57f938a 610 int isfilelist;
9a2d6cb8 611
2a157d1a 612 isfilelist = 0;
d57f938a 613 if(!wcscmp(peer->transfer->path, L"files.xml") || !wcscmp(peer->transfer->path, L"files.xml.bz2") || !wcscmp(peer->transfer->path, L"MyList.DcLst"))
614 isfilelist = 1;
615 if(!isfilelist && (peer->transfer->hash != NULL) && isdchash(peer->transfer->hash) && supports(peer, "tthf"))
9a2d6cb8 616 {
617 buf = base32encode(peer->transfer->hash->buf, 24);
618 ret = sprintf2("TTH/%.39s", buf);
619 free(buf);
620 } else {
621 if((buf = icwcstombs(peer->transfer->path, "UTF-8")) == NULL)
622 return(NULL);
623 ret = pathnmdc2adc(buf);
624 free(buf);
625 }
626 return(ret);
627}
628
629
d3372da9 630static int trresumecb(struct transfer *transfer, wchar_t *cmd, wchar_t *arg, struct dcpeer *peer)
631{
632 if(!wcscmp(cmd, L"resume"))
633 {
634 if(arg == NULL)
635 {
636 flog(LOG_WARNING, "filter returned no position for \"resume\" on transfer %i", transfer->id);
637 freedcpeer(peer);
638 } else {
639 transfer->curpos = wcstol(arg, NULL, 10);
9a2d6cb8 640 peer->hascurpos = 1;
641 requestfile(peer);
d3372da9 642 }
d3372da9 643 return(1);
644 }
645 return(0);
646}
647
9a2d6cb8 648static void sendmynick(struct dcpeer *peer)
d3372da9 649{
1d85f24b 650 struct fnetnode *fn;
d3372da9 651
1d85f24b 652 fn = peer->fn;
653 if(fn == NULL)
654 qstrf(peer->sk, "$MyNick %s|", icswcstombs(confgetstr("cli", "defnick"), peer->charset, "DoldaConnectUser-IN"));
9a2d6cb8 655 else
1d85f24b 656 qstrf(peer->sk, "$MyNick %s|", icswcstombs(fn->mynick, peer->charset, "DoldaConnectUser-IN"));
9a2d6cb8 657}
658
659static void sendpeerlock(struct dcpeer *peer)
660{
1c4b02cd 661 if(peer->dcppemu)
662 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DCPLUSPLUS0.674ABCABC|");
663 else
664 qstrf(peer->sk, "$Lock EXTENDEDPROTOCOLABCABCABCABCABCABC Pk=DOLDA%sABCABCABC|", VERSION);
9a2d6cb8 665}
666
667static void sendsupports(struct dcpeer *peer)
668{
1c4b02cd 669 if(peer->dcppemu)
670 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG |");
671 else
672 qstr(peer->sk, "$Supports MiniSlots XmlBZList ADCGet TTHL TTHF GetZBlock ZLIG|");
9a2d6cb8 673}
674
675static void requestfile(struct dcpeer *peer)
676{
677 char *buf;
678
679 if(peer->transfer->size == -1)
d3372da9 680 {
1d85f24b 681 /* Use DCCHARSET for $Get paths until further researched... */
9a2d6cb8 682 if((buf = icswcstombs(peer->transfer->path, DCCHARSET, NULL)) == NULL)
d3372da9 683 {
9a2d6cb8 684 transferseterror(peer->transfer, TRNSE_NOTFOUND);
685 freedcpeer(peer);
d3372da9 686 return;
687 }
9a2d6cb8 688 /* The transfer will be restarted later from
689 * cmd_filelength when it detects that the sizes
690 * don't match. */
691 qstrf(peer->sk, "$Get %s$1|", buf);
692 return;
d3372da9 693 }
9a2d6cb8 694 if((peer->transfer->hash == NULL) && !peer->notthl)
d3372da9 695 {
9a2d6cb8 696 if(supports(peer, "adcget") && supports(peer, "tthl"))
d3372da9 697 {
9a2d6cb8 698 qstr(peer->sk, "$ADCGET");
699 sendadc(peer->sk, "tthl");
700 if((buf = getadcid(peer)) == NULL)
d3372da9 701 {
9a2d6cb8 702 transferseterror(peer->transfer, TRNSE_NOTFOUND);
d3372da9 703 freedcpeer(peer);
704 return;
705 }
9a2d6cb8 706 sendadc(peer->sk, buf);
707 free(buf);
708 sendadc(peer->sk, "0");
709 sendadc(peer->sk, "-1");
710 qstr(peer->sk, "|");
df873cd0 711 peer->fetchingtthl = 1;
9a2d6cb8 712 return;
713 }
714 }
715 if(!peer->hascurpos)
716 {
717 if(forkfilter(peer->transfer))
718 {
719 flog(LOG_WARNING, "could not fork filter for transfer %i: %s", peer->transfer->id, strerror(errno));
720 freedcpeer(peer);
721 return;
d3372da9 722 }
9a2d6cb8 723 CBREG(peer->transfer, trans_filterout, (int (*)(struct transfer *, wchar_t *, wchar_t *, void *))trresumecb, NULL, peer);
724 return;
725 }
726 if(supports(peer, "adcget"))
727 {
728 qstr(peer->sk, "$ADCGET");
729 sendadc(peer->sk, "file");
730 if((buf = getadcid(peer)) == NULL)
731 {
732 transferseterror(peer->transfer, TRNSE_NOTFOUND);
733 freedcpeer(peer);
734 return;
735 }
736 sendadc(peer->sk, buf);
737 free(buf);
738 sendadcf(peer->sk, "%i", peer->transfer->curpos);
739 sendadcf(peer->sk, "%i", peer->transfer->size - peer->transfer->curpos);
740 qstr(peer->sk, "|");
741 } else if(supports(peer, "xmlbzlist")) {
742 if((buf = icswcstombs(peer->transfer->path, "UTF-8", NULL)) == NULL)
743 {
744 transferseterror(peer->transfer, TRNSE_NOTFOUND);
745 freedcpeer(peer);
746 return;
747 }
d93b5c2f 748 qstrf(peer->sk, "$UGetBlock %zi %zi %s|", peer->transfer->curpos, peer->transfer->size - peer->transfer->curpos, buf);
d3372da9 749 } else {
1d85f24b 750 /* Use DCCHARSET for $Get paths until further researched... */
9a2d6cb8 751 if((buf = icswcstombs(peer->transfer->path, DCCHARSET, NULL)) == NULL)
d3372da9 752 {
9a2d6cb8 753 transferseterror(peer->transfer, TRNSE_NOTFOUND);
754 freedcpeer(peer);
755 return;
d3372da9 756 }
d93b5c2f 757 qstrf(peer->sk, "$Get %s$%zi|", buf, peer->transfer->curpos + 1);
d3372da9 758 }
759}
760
761static void sendmyinfo(struct socket *sk, struct fnetnode *fn)
762{
763 struct dchub *hub;
764 char *buf;
765 struct fnetnode *cfn;
69757b8c 766 int hn1, hn2, hn3;
d3372da9 767
768 hub = fn->data;
769 qstrf(sk, "$MyINFO $ALL %s ", hub->nativenick);
1d85f24b 770 buf = tr(icswcstombs(confgetstr("dc", "desc"), hub->charset, "Charset_conv_failure"), "$_|_");
d3372da9 771 qstrf(sk, "%s", buf);
69757b8c 772 hn1 = hn2 = hn3 = 0;
d3372da9 773 for(cfn = fnetnodes; cfn != NULL; cfn = cfn->next)
774 {
775 if((cfn->state == FNN_EST) || (cfn->state == FNN_HS))
69757b8c 776 {
777 if(cfn->regstatus == FNNS_OP)
778 hn3++;
779 else if(cfn->regstatus == FNNS_REG)
780 hn2++;
781 else
782 hn1++;
783 }
d3372da9 784 }
69757b8c 785 qstrf(sk, "<%s V:%s,M:%c,H:%i/%i/%i,S:%i>",
1c4b02cd 786 (hub->dcppemu)?"++":"Dolda",
787 (hub->dcppemu)?"0.674":VERSION,
d3372da9 788 (tcpsock == NULL)?'P':'A',
69757b8c 789 hn1, hn2, hn3,
d3372da9 790 confgetint("transfer", "slots")
791 );
792 qstrf(sk, "$ $");
1d85f24b 793 buf = tr(icswcstombs(confgetstr("dc", "speedstring"), hub->charset, "Charset_conv_failure"), "$_|_");
d3372da9 794 qstrf(sk, "%s\x01$", buf);
1d85f24b 795 buf = tr(icswcstombs(confgetstr("dc", "email"), hub->charset, "Charset_conv_failure"), "$_|_");
d3372da9 796 qstrf(sk, "%s$", buf);
797 qstrf(sk, "%llu$|", sharesize);
798}
799
800static void hubhandleaction(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
801{
802 struct dchub *hub;
803
804 hub = fn->data;
805 if(!strcmp(cmd, "$Lock"))
806 {
807 qstrf(sk, "$ValidateNick %s|", hub->nativenick);
808 } else if(!strcmp(cmd, "$Hello")) {
809 if(fn->state == FNN_HS)
810 {
811 qstrf(sk, "$Version 1,0091|");
812 qstrf(sk, "$GetNickList|");
813 sendmyinfo(sk, fn);
814 fnetsetstate(fn, FNN_EST);
815 } else {
816 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
817 }
818 }
819}
820
821static void cmd_lock(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
822{
823 struct dchub *hub;
824 char *key;
825 char *p;
826
827 hub = fn->data;
828 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
829 hub->extended = 1;
830 if((p = strchr(args, ' ')) != NULL)
831 *(p++) = 0;
832 if(hub->extended)
833 {
1c4b02cd 834 if(hub->dcppemu)
835 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock |");
836 else
837 qstrf(sk, "$Supports UserCommand NoGetINFO NoHello UserIP2 TTHSearch GetZBlock|");
d3372da9 838 }
839 key = dcmakekey(args);
840 qstrf(sk, "$Key %s|", key);
841 free(key);
842 hubhandleaction(sk, fn, cmd, args);
843}
844
845static void cmd_hubname(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
846{
847 wchar_t *buf;
848 struct dchub *hub;
849
850 hub = fn->data;
851 if(hub->nativename == NULL)
852 free(hub->nativename);
853 hub->nativename = sstrdup(args);
1d85f24b 854 buf = icmbstowcs(args, hub->charset);
d3372da9 855 fnetsetname(fn, (buf == NULL)?L"Hubname conv error":buf);
856 if(buf != NULL)
857 free(buf);
858 hubhandleaction(sk, fn, cmd, args);
859}
860
861static void cmd_hello(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
862{
863 wchar_t *nick;
864 struct dchub *hub;
865
866 hub = fn->data;
1d85f24b 867 if((nick = icmbstowcs(args, hub->charset)) == NULL)
d3372da9 868 return;
869 if(strcmp(args, hub->nativenick) && (fnetfindpeer(fn, nick) == NULL))
870 fnetaddpeer(fn, nick, nick);
871 free(nick);
872 hubhandleaction(sk, fn, cmd, args);
873}
874
875static void cmd_quit(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
876{
877 wchar_t *nick;
878 struct fnetpeer *peer;
879 struct dchub *hub;
880
881 hub = fn->data;
1d85f24b 882 if((nick = icmbstowcs(args, hub->charset)) == NULL)
d3372da9 883 return;
884 if((peer = fnetfindpeer(fn, nick)) != NULL)
885 fnetdelpeer(peer);
886 free(nick);
887 hubhandleaction(sk, fn, cmd, args);
888}
889
890static void cmd_nicklist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
891{
892 struct dchub *hub;
893 char *p;
894 wchar_t *buf;
895 struct fnetpeer *peer, *npeer;
896
897 hub = fn->data;
898 for(peer = fn->peers; peer != NULL; peer = peer->next)
899 peer->flags.b.delete = 1;
900 while((p = strstr(args, "$$")) != NULL)
901 {
902 *p = 0;
1d85f24b 903 if((buf = icmbstowcs(args, hub->charset)) != NULL)
d3372da9 904 {
905 if((peer = fnetfindpeer(fn, buf)) == NULL)
906 peer = fnetaddpeer(fn, buf, buf);
907 else
908 peer->flags.b.delete = 0;
909 free(buf);
910 qstrf(sk, "$GetINFO %s %s|", args, hub->nativenick);
911 }
912 args = p + 2;
913 }
914 for(peer = fn->peers; peer != NULL; peer = npeer)
915 {
916 npeer = peer->next;
917 if(peer->flags.b.delete)
918 fnetdelpeer(peer);
919 }
920 hubhandleaction(sk, fn, cmd, args);
921}
922
923static void cmd_oplist(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
924{
925 struct dchub *hub;
926 char *p;
927 wchar_t *buf;
928 struct fnetpeer *peer;
929
930 hub = fn->data;
931 for(peer = fn->peers; peer != NULL; peer = peer->next)
932 peer->flags.b.op = 0;
933 while((p = strstr(args, "$$")) != NULL)
934 {
935 *p = 0;
1d85f24b 936 if((buf = icmbstowcs(args, hub->charset)) != NULL)
d3372da9 937 {
938 if((peer = fnetfindpeer(fn, buf)) != NULL)
939 peer->flags.b.op = 1;
940 free(buf);
941 }
942 args = p + 2;
943 }
944 hubhandleaction(sk, fn, cmd, args);
945}
946
947static void cmd_myinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
948{
949 char *p, *p2;
950 wchar_t *buf, *wp, *wp2;
951 wchar_t abuf[10];
952 struct fnetpeer *peer;
953 struct dchub *hub;
954
955 hub = fn->data;
956 p = args;
957 if(strncmp(p, "$ALL ", 5))
958 return;
959 p += 5;
960 if((p2 = strchr(p, ' ')) == NULL)
961 return;
962 *p2 = 0;
1d85f24b 963 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 964 return;
965 if((peer = fnetfindpeer(fn, buf)) == NULL)
966 peer = fnetaddpeer(fn, buf, buf);
967 free(buf);
968 p = p2 + 1;
969 if((p2 = strstr(p, "$ $")) == NULL)
970 return;
971 *p2 = 0;
1d85f24b 972 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 973 return;
316e9a13 974 if((wcslen(buf) > 0) && (buf[wcslen(buf) - 1] == L'>') && ((wp = wcsrchr(buf, L'<')) != NULL))
d3372da9 975 {
976 buf[wcslen(buf) - 1] = L'\0';
977 *(wp++) = L'\0';
978 if((wp2 = wcschr(wp, L' ')) != NULL)
979 {
980 *(wp2++) = L'\0';
981 fnetpeersetstr(peer, L"dc-client", wp);
982 wp = wp2;
983 do
984 {
985 if((wp2 = wcschr(wp, L',')) != NULL)
986 *(wp2++) = L'\0';
987 if(wp[1] != L':')
988 continue;
989 swprintf(abuf, 10, L"dc-tag-%lc", wp[0]);
990 fnetpeersetstr(peer, abuf, wp + 2);
991 wp = wp2;
992 } while(wp2 != NULL);
993 }
994 }
995 fnetpeersetstr(peer, L"descr", buf);
996 free(buf);
997 p = p2 + 3;
998 if((p2 = strchr(p, '$')) == NULL)
999 return;
1000 *(p2 - 1) = 0;
1d85f24b 1001 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 1002 return;
1003 fnetpeersetstr(peer, L"dc-speed", buf);
1004 free(buf);
1005 p = p2 + 1;
1006 if((p2 = strchr(p, '$')) == NULL)
1007 return;
1008 *p2 = 0;
1d85f24b 1009 if((buf = icmbstowcs(p, hub->charset)) == NULL)
d3372da9 1010 return;
1011 fnetpeersetstr(peer, L"email", buf);
1012 free(buf);
1013 p = p2 + 1;
1014 if(strlen(p) < 1)
1015 return;
1016 fnetpeersetlnum(peer, L"share", strtoll(p, NULL, 10));
1017 hubhandleaction(sk, fn, cmd, args);
1018}
1019
1020/* I do not implement the fully in that I do not disconnect from the
1021 * old hub. I do this since I believe that if the hub owner really
1022 * wants to get rid of us, then it is his responsibility to disconnect
1023 * us. */
1024static void cmd_forcemove(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1025{
1026 struct dchub *hub;
1027 struct fnetnode *newfn;
1028 int freeargs;
1029
1030 hub = fn->data;
1031 if(strchr(args, ':') == NULL)
1032 {
1033 args = strcpy(smalloc(strlen(args) + 5), args);
1034 strcat(args, ":411");
1035 freeargs = 1;
1036 } else {
1037 freeargs = 0;
1038 }
a3a4a3a7 1039 if((newfn = fnetinitconnect(L"dc", fn->owner, args, NULL)) != NULL)
d3372da9 1040 {
1041 linkfnetnode(newfn);
1042 putfnetnode(newfn);
1043 }
1044 hubhandleaction(sk, fn, cmd, args);
1045 if(freeargs)
1046 free(args);
1047}
1048
1d85f24b 1049static char *getdcpath(struct sharecache *node, size_t *retlen, char *charset)
d3372da9 1050{
1051 char *buf, *buf2;
1052 size_t len, len2;
1053
1054 if(node->parent == NULL)
1055 return(NULL);
1056 if(node->parent == shareroot)
1057 {
1d85f24b 1058 if((buf = icwcstombs(node->name, charset)) == NULL)
d3372da9 1059 return(NULL);
1060 if(retlen != NULL)
1061 *retlen = strlen(buf);
1062 return(buf);
1063 } else {
1d85f24b 1064 if((buf2 = icwcstombs(node->name, charset)) == NULL)
d3372da9 1065 return(NULL);
1d85f24b 1066 if((buf = getdcpath(node->parent, &len, charset)) == NULL)
d3372da9 1067 {
1068 free(buf2);
1069 return(NULL);
1070 }
1071 len2 = strlen(buf2);
1072 buf = srealloc(buf, len + 1 + len2 + 1);
1073 buf[len++] = '\\';
1074 strcpy(buf + len, buf2);
1075 buf[len + len2] = 0;
1076 free(buf2);
1077 if(retlen != NULL)
1078 *retlen = len + len2;
1079 return(buf);
1080 }
1081}
1082
1083/*
1084 * This is the main share searching function for Direct Connect
1085 * peers. Feel free to optimize it if you feel the need for it. I
1086 * haven't ever seen it take any noticable CPU time anyway, so I
1087 * haven't felt that need.
1088 *
1089 * It may feel dubious to just return the directory when all terms are
1090 * satisfied rather than all the files in it, but it really benefits
1091 * everyone: Less cycles used for us, less UDP squelching for active
1092 * searchers, and less bandwidth waste for hubs when serving passive
1093 * searchers.
1094 */
1095static void cmd_search(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1096{
1097 int i, done;
1098 struct dchub *hub;
1099 char *p, *p2;
1100 char *prefix, *infix, *postfix, *buf, *buf2;
1101 struct socket *dsk;
1102 struct sockaddr_in addr;
1103 struct sharecache *node;
1104 int minsize, maxsize;
c7185019 1105 int dotth;
1106 size_t buflen;
d3372da9 1107 int termnum, satisfied, skipcheck;
1108 int level, tersat[32];
1109 wchar_t *terms[32];
1110 char hashtth[24];
1111
1112 hub = fn->data;
1113 if((p = strchr(args, ' ')) == NULL)
1114 return;
1115 *(p++) = 0;
1116
1117 memset(terms, 0, sizeof(terms));
1118 prefix = infix = postfix = NULL;
1119 dsk = NULL;
1120 dotth = 0;
1121
1122 if(!strncmp(args, "Hub:", 4))
1123 {
1124 if(!strcmp(cmd, "$MultiSearch"))
1125 goto out;
1126 if(!strcmp(args + 4, hub->nativenick))
1127 goto out;
1128 prefix = sprintf2("$SR %s ", hub->nativenick);
1129 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1130 postfix = sprintf2(" (%s)\005%s|", formataddress(fn->sk->remote, fn->sk->remotelen), args + 4);
1131 dsk = sk;
1132 getsock(dsk);
1133 } else {
1134 if((p2 = strchr(args, ':')) == NULL)
1135 goto out;
1136 *(p2++) = 0;
1137 addr.sin_family = AF_INET;
1138 if(!inet_aton(args, &addr.sin_addr))
1139 goto out;
1140 addr.sin_port = htons(atoi(p2));
1141 prefix = sprintf2("$SR %s ", hub->nativenick);
1142 infix = sprintf2(" %i/%i\005", slotsleft(), confgetint("transfer", "slots"));
1143 postfix = sprintf2(" (%s)|", formataddress(fn->sk->remote, fn->sk->remotelen));
1144 netdgramconn(dsk = netdupsock(udpsock), (struct sockaddr *)&addr, sizeof(addr));
1145 }
1146
1147 minsize = maxsize = -1;
1148 if(*p == 0)
1149 goto out;
1150 if(*(p++) == 'T')
1151 minsize = 0;
1152 if(*(p++) != '?')
1153 goto out;
1154 if(*p == 0)
1155 goto out;
9d8cf743 1156 if((*(p++) == 'T') && (minsize == 0))
d3372da9 1157 {
1158 maxsize = 0;
1159 minsize = -1;
1160 }
1161 if(*(p++) != '?')
1162 goto out;
1163 if((p2 = strchr(p, '?')) == NULL)
1164 goto out;
1165 *(p2++) = 0;
1166 if(minsize == 0)
1167 minsize = atoi(p);
1168 if(maxsize == 0)
1169 maxsize = atoi(p);
1170 p = p2 + 1;
1171 if(*(p++) != '?')
1172 goto out;
1173 termnum = 0;
1174 p2 = p;
1175 done = 0;
1176 while(!done)
1177 {
1178 if((*p2 == 0) || (*p2 == '$'))
1179 {
1180 if(*p2 == 0)
1181 done = 1;
1182 else
1183 *p2 = 0;
1184 if(*p)
1185 {
1186 if(!dotth && !strncmp(p, "TTH:", 4))
1187 {
1188 dotth = 1;
2dd01e6e 1189 if(((buf = base32decode(p + 4, &buflen)) == NULL) || (buflen != 24))
1190 {
1191 free(buf);
d3372da9 1192 goto out;
2dd01e6e 1193 }
d3372da9 1194 memcpy(hashtth, buf, 24);
1195 free(buf);
1196 } else {
1d85f24b 1197 if((terms[termnum] = icmbstowcs(p, hub->charset)) != NULL)
d3372da9 1198 termnum++;
1199 }
1200 }
1201 p = p2 + 1;
1202 if(termnum == 32)
1203 break;
1204 }
1205 p2++;
1206 }
1207
1208 node = shareroot->child;
1209 level = 0;
1210 for(i = 0; i < termnum; i++)
1211 tersat[i] = -1;
1212 satisfied = 0;
1213 while(1)
1214 {
1215 skipcheck = 0;
1216 if(node->f.b.type == FILE_REG)
1217 {
1218 if((minsize >= 0) && (node->size < minsize))
1219 skipcheck = 1;
1220 if((maxsize >= 0) && (node->size > maxsize))
1221 skipcheck = 1;
1222 }
1223 if(!skipcheck && dotth)
1224 {
1225 if((node->f.b.type != FILE_REG) || (node->f.b.hastth && memcmp(hashtth, node->hashtth, 24)))
1226 skipcheck = 1;
1227 }
1228 if(!skipcheck)
1229 {
1230 for(i = 0; i < termnum; i++)
1231 {
1232 if(tersat[i] >= 0)
1233 continue;
1234 if(wcsexists(node->name, terms[i]))
1235 {
1236 tersat[i] = level;
1237 satisfied++;
1238 } else if(node->child == NULL) {
1239 break;
1240 }
1241 }
1242 }
1243 if(!skipcheck && (satisfied == termnum))
1244 {
1d85f24b 1245 /* Use DCCHARSET in $Get paths until further researched... */
1246 if((buf = getdcpath(node, NULL, DCCHARSET)) != NULL)
d3372da9 1247 {
1248 if(node->f.b.hastth)
1249 {
1250 buf2 = base32encode(node->hashtth, 24);
d93b5c2f 1251 qstrf(dsk, "%s%s\005%zi%sTTH:%.39s%s", prefix, buf, node->size, infix, buf2, postfix);
d3372da9 1252 free(buf2);
1253 } else {
d93b5c2f 1254 qstrf(dsk, "%s%s\005%zi%s%s%s", prefix, buf, node->size, infix, hub->nativename, postfix);
d3372da9 1255 }
1256 free(buf);
1257 }
1258 }
1259 if((!skipcheck && (satisfied == termnum)) || (node->child == NULL))
1260 {
1261 while(node->next == NULL)
1262 {
1263 if((node = node->parent) == shareroot)
1264 break;
1265 level--;
1266 }
1267 if(node == shareroot)
1268 break;
1269 for(i = 0; i < termnum; i++)
1270 {
1271 if(tersat[i] >= level)
1272 {
1273 tersat[i] = -1;
1274 satisfied--;
1275 }
1276 }
1277 node = node->next;
1278 } else {
1279 node = node->child;
1280 level++;
1281 }
1282 }
1283
1284 hubhandleaction(sk, fn, cmd, args);
1285
1286 out:
1287 if(dsk != NULL)
1288 putsock(dsk);
1289 if(prefix != NULL)
1290 free(prefix);
1291 if(infix != NULL)
1292 free(infix);
1293 if(postfix != NULL)
1294 free(postfix);
1295 for(i = 0; (i < 32) && (terms[i] != NULL); i++)
1296 free(terms[i]);
1297}
1298
1299static void cmd_connecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1300{
1301 char *p;
1302 struct dchub *hub;
1303 struct socket *newsk;
1304 struct sockaddr_in addr;
1305
1306 hub = fn->data;
1307 if((p = strchr(args, ' ')) == NULL)
1308 return;
1309 *(p++) = 0;
1310 if(strcmp(args, hub->nativenick))
1311 return;
1312 addr.sin_family = AF_INET;
1313 args = p;
1314 if((p = strchr(args, ':')) == NULL)
1315 return;
1316 *(p++) = 0;
1317 addr.sin_port = htons(atoi(p));
1318 if(!inet_aton(args, &addr.sin_addr))
1319 return;
cab0b442 1320 newsk = netcsconn((struct sockaddr *)&addr, sizeof(addr), (void (*)(struct socket *, int, void *))peerconnect, fn);
d3372da9 1321 getfnetnode(fn);
1322 hubhandleaction(sk, fn, cmd, args);
1323}
1324
1325static void sendctm(struct socket *sk, char *nick)
1326{
1327 struct sockaddr *addr;
1328 socklen_t addrlen;
1329
1330 if(tcpsock == NULL)
1331 return;
9b5acc18 1332 if(sockgetremotename2(tcpsock, sk, &addr, &addrlen) < 0)
d3372da9 1333 return;
1334 if(addr->sa_family == AF_INET)
1335 qstrf(sk, "$ConnectToMe %s %s|", nick, formataddress(addr, addrlen));
1336 else
1337 flog(LOG_WARNING, "Direct Connect TCP socket is suddenly not AF_INET, but %i", addr->sa_family);
1338 free(addr);
1339}
1340
1341static void cmd_revconnecttome(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1342{
1343 struct dchub *hub;
1344 char *p;
1345
1346 hub = fn->data;
1347 if((p = strchr(args, ' ')) == NULL)
1348 return;
1349 *(p++) = 0;
1350 if(strcmp(p, hub->nativenick))
1351 return;
1352 sendctm(sk, args);
1353 expectpeer(args, fn);
1354 hubhandleaction(sk, fn, cmd, args);
1355}
1356
1357static void cmd_getnetinfo(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1358{
1359 struct dchub *hub;
1360 struct fnetnode *node;
1361 int numhubs;
1362
1363 hub = fn->data;
1364 numhubs = 0;
1365 for(node = fnetnodes; node != NULL; node = node->next)
1366 {
1367 if(node->state == FNN_EST)
1368 numhubs++;
1369 }
1370 qstrf(sk, "$NetInfo %i$%i$%c$0|", confgetint("transfer", "slots"), numhubs, (tcpsock == NULL)?'P':'A');
1371 hubhandleaction(sk, fn, cmd, args);
1372}
1373
1374static void cmd_to(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1375{
1376 struct dchub *hub;
1377 char *p, *p2;
1378
1379 hub = fn->data;
1380 p = args;
1381 if((p2 = strchr(p, ' ')) == NULL)
1382 return;
1383 *(p2++) = 0;
1384 p = p2;
1385 if((p2 = strchr(p, ' ')) == NULL)
1386 return;
1387 *(p2++) = 0;
1388 if(strcmp(p, "From:"))
1389 return;
1390 p = p2;
1391 if((p2 = strstr(p, " $")) == NULL)
1392 return;
1393 *p2 = 0;
1394 p2 += 2;
1395 hubrecvchat(fn->sk, fn, p, p2);
1396 hubhandleaction(sk, fn, cmd, args);
1397}
1398
1399static void cmd_sr(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1400{
1401 struct dchub *hub;
d86b7a9f 1402 char *p, *p2, *buf;
d3372da9 1403 char *nick, *filename, *hubname;
1404 int size, slots;
d86b7a9f 1405 size_t buflen;
d3372da9 1406 struct srchres *sr;
1407 wchar_t *wnick, *wfile;
1408
1409 hub = fn->data;
1410 nick = p = args;
1411 if((p2 = strchr(p, ' ')) == NULL)
1412 return;
1413 *p2 = 0;
1414 p = p2 + 1;
1415 filename = p;
1416 if((p2 = strchr(p, 5)) == NULL)
1417 return;
1418 *p2 = 0;
1419 p = p2 + 1;
1420 if((p2 = strchr(p, ' ')) == NULL)
1421 return;
1422 *p2 = 0;
1423 size = atoi(p);
1424 p = p2 + 1;
1425 if((p2 = strchr(p, '/')) == NULL)
1426 return;
1427 *p2 = 0;
1428 slots = atoi(p);
1429 p = p2 + 1;
1430 if((p2 = strchr(p, 5)) == NULL)
1431 return;
1432 p = p2 + 1;
1433 hubname = p;
1434 if((p2 = strstr(p, " (")) == NULL)
1435 return;
1436 *p2 = 0;
1d85f24b 1437 if((wnick = icmbstowcs(nick, hub->charset)) == NULL)
d3372da9 1438 return;
1d85f24b 1439 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 1440 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
1441 {
1442 free(wnick);
1443 return;
1444 }
1445 sr = newsrchres(&dcnet, wfile, wnick);
1446 if(sr->peernick != NULL)
1447 free(sr->peernick);
1448 sr->peernick = swcsdup(wnick);
1449 sr->size = size;
1450 sr->slots = slots;
1451 free(wfile);
1452 free(wnick);
d86b7a9f 1453 if(!strncmp(hubname, "TTH:", 4))
1454 {
1455 if((buf = base32decode(hubname + 4, &buflen)) != NULL)
1456 {
1457 if(buflen == 24)
1458 sr->hash = newhash(L"TTH", 24, buf);
1459 free(buf);
1460 }
1461 }
d3372da9 1462 getfnetnode(sr->fn = fn);
1463 submitsrchres(sr);
1464 freesrchres(sr);
1465 hubhandleaction(sk, fn, cmd, args);
1466}
1467
1468static void cmd_usercommand(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1469{
1470 /* Do nothing for now. */
1471}
1472
48509089 1473static void cmd_getpass(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1474{
1475 struct dchub *hub;
1c4b02cd 1476 wchar_t *pw;
48509089 1477 char *mbspw;
1478
1479 hub = fn->data;
1c4b02cd 1480 pw = wpfind(fn->args, L"password");
1d85f24b 1481 if((pw == NULL) || ((mbspw = icwcstombs(pw, hub->charset)) == NULL))
48509089 1482 {
1483 killfnetnode(fn);
1484 return;
1485 }
1486 qstrf(sk, "$MyPass %s|", mbspw);
1487 free(mbspw);
fcd0627b 1488 fn->regstatus = FNNS_REG;
48509089 1489 hubhandleaction(sk, fn, cmd, args);
1490}
1491
c9b3ad74 1492static void cmd_logedin(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1493{
1494 struct dchub *hub;
1495
1496 hub = fn->data;
fcd0627b 1497 fn->regstatus = FNNS_OP;
c9b3ad74 1498 hubhandleaction(sk, fn, cmd, args);
1499}
1500
08b74f8c
FT		 1501static void cmd_hubsupports(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
1502{
1503 struct dchub *hub;
1504 int i;
1505 char *p, *p2;
1506 char **arr;
1507 size_t arrsize, arrdata;
1508
1509 hub = fn->data;
1510 if(hub->supports != NULL)
1511 {
1512 for(i = 0; hub->supports[i] != NULL; i++)
1513 free(hub->supports[i]);
1514 free(hub->supports);
1515 }
1516 arr = NULL;
1517 arrsize = arrdata = 0;
1518 p = args;
1519 do
1520 {
1521 if((p2 = strchr(p, ' ')) != NULL)
1522 *(p2++) = 0;
1523 if(*p == 0)
1524 continue;
1525 addtobuf(arr, sstrdup(p));
1526 } while((p = p2) != NULL);
1527 addtobuf(arr, NULL);
1528 hub->supports = arr;
1529}
1530
d3372da9 1531static void cmd_mynick(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1532{
9a2d6cb8 1533 struct dcexppeer *expect;
1c4b02cd 1534 struct dchub *hub;
9a2d6cb8 1535
d3372da9 1536 if(peer->nativename != NULL)
1537 free(peer->nativename);
1538 peer->nativename = sstrdup(args);
1539 if(peer->wcsname != NULL)
1540 free(peer->wcsname);
1d85f24b 1541 if((peer->wcsname = icmbstowcs(peer->nativename, peer->charset)) == NULL)
d3372da9 1542 {
1543 freedcpeer(peer);
1544 return;
1545 }
9a2d6cb8 1546 if(peer->accepted)
1547 {
1548 for(expect = expected; expect != NULL; expect = expect->next)
1549 {
1550 if(!strcmp(expect->nick, args))
1551 break;
1552 }
1553 if(expect == NULL)
1554 {
1555 peer->fn = NULL;
1556 } else {
1c4b02cd 1557 hub = expect->fn->data;
9a2d6cb8 1558 peer->fn = expect->fn;
1559 getfnetnode(peer->fn);
1c4b02cd 1560 peer->dcppemu = hub->dcppemu;
9a2d6cb8 1561 freeexppeer(expect);
1562 }
1563 }
d3372da9 1564}
1565
1566static void cmd_direction(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1567{
1568 char *p;
9a2d6cb8 1569 int mydir;
1570 struct transfer *transfer;
d3372da9 1571
1572 if((p = strchr(args, ' ')) == NULL)
1573 return;
1574 *p = 0;
1575 if(!strcmp(args, "Upload"))
9a2d6cb8 1576 mydir = TRNSD_DOWN;
d3372da9 1577 if(!strcmp(args, "Download"))
9a2d6cb8 1578 mydir = TRNSD_UP;
1579 if(peer->accepted)
1580 {
1581 if((peer->transfer == NULL) || (mydir != peer->direction))
1582 {
1583 freedcpeer(peer);
1584 return;
1585 }
1b14d3d8 1586 if(peer->direction == TRNSD_DOWN)
1587 requestfile(peer);
9a2d6cb8 1588 } else {
1589 if(peer->wcsname == NULL)
1590 {
1591 freedcpeer(peer);
1592 return;
1593 }
1594 peer->direction = mydir;
1595 if(peer->direction == TRNSD_UP)
1596 {
01663fd9 1597 if(confgetint("transfer", "ulquota") && hasupload(&dcnet, peer->wcsname))
1598 {
1599 freedcpeer(peer);
1600 return;
1601 }
9a2d6cb8 1602 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1603 } else {
1604 if((transfer = finddownload(peer->wcsname)) == NULL)
1605 {
1606 freedcpeer(peer);
1607 return;
1608 }
1609 transferattach(transfer, &dctransfer, peer);
1610 transfersetstate(transfer, TRNS_HS);
1611 }
1612 transfersetnick(transfer, peer->wcsname);
1613 peer->transfer = transfer;
1614 if(peer->extended)
1615 sendsupports(peer);
1616 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1617 if(peer->key != NULL)
1618 qstrf(sk, "$Key %s|", peer->key);
1619 if(peer->direction == TRNSD_DOWN)
1620 requestfile(peer);
1621 }
d3372da9 1622}
1623
1624static void cmd_peerlock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1625{
9a2d6cb8 1626 char *p, *key;
1627 struct transfer *transfer;
d3372da9 1628
1629 if((p = strchr(args, ' ')) == NULL)
1630 return;
1631 *p = 0;
1632 if(!strncmp(args, "EXTENDEDPROTOCOL", 16))
1633 peer->extended = 1;
9a2d6cb8 1634 key = dcmakekey(args);
1635 if(peer->accepted)
1636 {
1637 if(peer->wcsname == NULL)
1638 {
1639 freedcpeer(peer);
1640 return;
1641 }
1642 sendmynick(peer);
1643 sendpeerlock(peer);
1644 if(peer->extended)
1645 sendsupports(peer);
1646 if((transfer = finddownload(peer->wcsname)) == NULL)
1647 {
01663fd9 1648 if(confgetint("transfer", "ulquota") && hasupload(&dcnet, peer->wcsname))
1649 {
1650 freedcpeer(peer);
1651 return;
1652 }
9a2d6cb8 1653 peer->direction = TRNSD_UP;
1654 transfer = newupload(peer->fn, &dcnet, peer->wcsname, &dctransfer, peer);
1655 } else {
1656 peer->direction = TRNSD_DOWN;
1657 transferattach(transfer, &dctransfer, peer);
1658 transfersetstate(transfer, TRNS_HS);
1659 }
1660 transfersetnick(transfer, peer->wcsname);
1661 peer->transfer = transfer;
1662 qstrf(sk, "$Direction %s %i|", (peer->direction == TRNSD_UP)?"Upload":"Download", rand() % 10000);
1663 qstrf(sk, "$Key %s|", key);
62da2712 1664 free(key);
9a2d6cb8 1665 } else {
1666 if(peer->key != NULL)
1667 free(peer->key);
1668 peer->key = key;
1669 }
d3372da9 1670}
1671
1672static void cmd_key(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1673{
9a2d6cb8 1674 /* NOP */
1675}
1676
1677static void startdl(struct dcpeer *peer)
1678{
1e9d82b1 1679 if(peer->timeout != NULL)
1680 canceltimer(peer->timeout);
9a2d6cb8 1681 peer->state = PEER_TRNS;
1682 transferstartdl(peer->transfer, peer->sk);
cab0b442 1683 peer->sk->readcb = (void (*)(struct socket *, void *))transread;
1684 peer->sk->errcb = (void (*)(struct socket *, int, void *))transerr;
9a2d6cb8 1685}
1686
1687static void startul(struct dcpeer *peer)
1688{
1e9d82b1 1689 if(peer->timeout != NULL)
1690 canceltimer(peer->timeout);
9a2d6cb8 1691 peer->state = PEER_TRNS;
1692 transferstartul(peer->transfer, peer->sk);
cab0b442 1693 peer->sk->writecb = (void (*)(struct socket *, void *))transwrite;
d3372da9 1694}
1695
1696static void cmd_filelength(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1697{
1698 int size;
1fc81821 1699 struct transfer *transfer;
d3372da9 1700
1701 if(peer->transfer == NULL)
1702 {
1703 freedcpeer(peer);
1704 return;
1705 }
1706 size = atoi(args);
9a2d6cb8 1707 if(peer->transfer->size != size)
d3372da9 1708 {
d3372da9 1709 transfersetsize(peer->transfer, size);
1fc81821 1710 transfer = peer->transfer;
d3372da9 1711 freedcpeer(peer);
1fc81821 1712 trytransferbypeer(transfer->fnet, transfer->peerid);
d3372da9 1713 return;
1714 }
9a2d6cb8 1715 startdl(peer);
1716 qstr(peer->sk, "$Send|");
d3372da9 1717}
1718
1719static void cmd_error(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1720{
df873cd0 1721 if(peer->fetchingtthl)
1722 {
1723 peer->fetchingtthl = 0;
1724 peer->notthl = 1;
1725 requestfile(peer);
1726 return;
1727 }
d3372da9 1728 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1729 {
1730 transferseterror(peer->transfer, TRNSE_NOTFOUND);
1731 resettransfer(peer->transfer);
1732 return;
1733 }
1734 freedcpeer(peer);
1735}
1736
1737static void cmd_maxedout(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1738{
1739 if((peer->transfer != NULL) && (peer->transfer->dir == TRNSD_DOWN))
1740 {
1741 transferseterror(peer->transfer, TRNSE_NOSLOTS);
1742 resettransfer(peer->transfer);
1743 return;
1744 }
1745 freedcpeer(peer);
1746}
1747
1748static struct
1749{
1750 char *name;
1751 char **file;
1752 void (*func)(void);
1753} lists[] =
1754{
1755 {"MyList.DcLst", &hmlistname, updatehmlist},
1756 {"files.xml", &xmllistname, updatexmllist},
1757 {"files.xml.bz2", &xmlbz2listname, updatexmlbz2list},
1758 {NULL, NULL}
1759};
1760
1761static int openfilelist(char *name)
1762{
1763 int i, fd;
1764 int errnobak;
1765
1766 for(i = 0; lists[i].name != NULL; i++)
1767 {
1768 if(!strcmp(name, lists[i].name))
1769 break;
1770 }
1771 errno = 0;
1772 if(lists[i].name == NULL)
1773 return(-1);
1774 fd = -1;
1775 if((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0))
1776 lists[i].func();
1777 if((fd < 0) && ((*lists[i].file == NULL) || ((fd = open(*lists[i].file, O_RDONLY)) < 0)))
1778 {
1779 errnobak = errno;
1780 flog(LOG_ERR, "could not open filelist tempfile: %s", strerror(errno));
1781 errno = errnobak;
1782 return(-1);
1783 }
1784 return(fd);
1785}
1786
1787static struct sharecache *findbytth(char *tth32)
1788{
1789 char *buf;
1790 size_t buflen;
1791 struct sharecache *node;
1792
1793 if((buf = base32decode(tth32, &buflen)) == NULL)
1794 return(NULL);
1795 if(buflen != 24)
1796 {
1797 free(buf);
1798 return(NULL);
1799 }
1800 for(node = shareroot->child; node != NULL; node = nextscnode(node))
1801 {
1802 if(node->f.b.hastth && !memcmp(node->hashtth, buf, 24))
1803 break;
1804 }
1805 free(buf);
1806 return(node);
1807}
1808
1809static struct sharecache *resdcpath(char *path, char *charset, char sep)
1810{
1811 struct sharecache *node;
1812 char *p, *p2;
1813
1814 node = shareroot;
1815 p = path;
1816 while(p != NULL)
1817 {
1818 if((p2 = strchr(p, sep)) != NULL)
1819 *(p2++) = 0;
1820 if((node = findcache(node, icsmbstowcs(p, charset, L""))) == NULL)
1821 return(NULL);
1822 p = p2;
1823 }
1824 return(node);
1825}
1826
1827static void cmd_get(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1828{
1829 int offset;
1830 char *p, *buf;
1831 wchar_t *buf2;
1832 struct sharecache *node;
1833 struct socket *lesk;
1834 int fd;
1835 struct stat sb;
1836
1837 if(peer->transfer == NULL)
1838 {
1839 freedcpeer(peer);
1840 return;
1841 }
1842 if((p = strchr(args, '$')) == NULL)
1843 {
1844 freedcpeer(peer);
1845 return;
1846 }
1847 *(p++) = 0;
1848 if((offset = (atoi(p) - 1)) < 0)
1849 {
1850 freedcpeer(peer);
1851 return;
1852 }
1853 if(((fd = openfilelist(args)) < 0) && (errno != 0))
1854 {
1855 qstr(sk, "$Error Could not send file list|");
1856 freedcpeer(peer);
1857 return;
1858 } else if(fd >= 0) {
1859 if((buf2 = icsmbstowcs(args, DCCHARSET, NULL)) != NULL)
1860 transfersetpath(peer->transfer, buf2);
f00d7432 1861 peer->transfer->flags.b.minislot = 1;
d3372da9 1862 }
1863 if(fd < 0)
1864 {
1d85f24b 1865 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 1866 if((node = resdcpath(args, DCCHARSET, '\\')) == NULL)
1867 {
1868 qstrf(sk, "$Error File not in share|");
1869 freedcpeer(peer);
1870 return;
1871 }
1872 if((fd = opensharecache(node)) < 0)
1873 {
1874 qstrf(sk, "$Error %s|", strerror(errno));
1875 freedcpeer(peer);
1876 return;
1877 }
1878 buf = getfspath(node);
1879 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
1880 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
1881 else
1882 transfersetpath(peer->transfer, buf2);
1883 free(buf);
1884 }
1885 if(fstat(fd, &sb) < 0)
1886 {
1887 close(fd);
1888 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
1889 qstrf(sk, "$Error|");
1890 freedcpeer(peer);
1891 return;
1892 }
f00d7432 1893 if(sb.st_size < 65536)
1894 peer->transfer->flags.b.minislot = 1;
1895 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
565006d1 1896 close(fd);
f00d7432 1897 qstr(sk, "$MaxedOut|");
1898 freedcpeer(peer);
1899 return;
1900 }
d3372da9 1901 if((offset != 0) && (lseek(fd, offset, SEEK_SET) < 0))
1902 {
1903 close(fd);
1904 qstrf(sk, "$Error Offset out of range|");
1905 freedcpeer(peer);
1906 return;
1907 }
1908 lesk = wrapsock(fd);
1909 transferprepul(peer->transfer, sb.st_size, offset, -1, lesk);
1910 putsock(lesk);
d93b5c2f 1911 qstrf(sk, "$FileLength %zi|", peer->transfer->size);
d3372da9 1912}
1913
1914static void cmd_send(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1915{
1916 if(peer->transfer == NULL)
1917 {
1918 freedcpeer(peer);
1919 return;
1920 }
1921 if(peer->transfer->localend == NULL)
1922 {
1923 freedcpeer(peer);
1924 return;
1925 }
1926 peer->ptclose = 1;
9a2d6cb8 1927 startul(peer);
d3372da9 1928}
1929
1930static void cmd_supports(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1931{
1932 int i;
1933 char *p, *p2;
1934 char **arr;
1935 size_t arrsize, arrdata;
1936
1937 if(peer->supports != NULL)
1938 {
1939 for(i = 0; peer->supports[i] != NULL; i++)
1940 free(peer->supports[i]);
1941 free(peer->supports);
1942 }
1943 arr = NULL;
1944 arrsize = arrdata = 0;
1945 p = args;
1946 do
1947 {
1948 if((p2 = strchr(p, ' ')) != NULL)
1949 *(p2++) = 0;
1950 if(*p == 0)
1951 continue;
1952 addtobuf(arr, sstrdup(p));
1953 } while((p = p2) != NULL);
1954 addtobuf(arr, NULL);
1955 peer->supports = arr;
d3372da9 1956}
1957
1958static void cmd_getblock(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
1959{
1960 int fd;
1961 char *p, *p2;
1962 int start, numbytes;
1963 char *charset, *buf;
1964 wchar_t *buf2;
1965 struct sharecache *node;
1966 struct stat sb;
1967 struct socket *lesk;
1968
1969 if(peer->transfer == NULL)
1970 {
1971 freedcpeer(peer);
1972 return;
1973 }
1974 p = args;
1975 if((p2 = strchr(p, ' ')) == NULL)
1976 {
1977 freedcpeer(peer);
1978 return;
1979 }
1980 *(p2++) = 0;
1981 start = atoi(p);
1982 p = p2;
1983 if((p2 = strchr(p, ' ')) == NULL)
1984 {
1985 freedcpeer(peer);
1986 return;
1987 }
1988 *(p2++) = 0;
1989 numbytes = atoi(p);
1990 p = p2;
1991 if(!strcmp(cmd, "$UGetBlock") || !strcmp(cmd, "$UGetZBlock"))
1992 charset = "UTF-8";
1993 else
1d85f24b 1994 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 1995 charset = DCCHARSET;
1996 if(!strcmp(cmd, "$GetZBlock") || !strcmp(cmd, "$UGetZBlock"))
1997 initcompress(peer, CPRS_ZLIB);
1998 if(((fd = openfilelist(p)) < 0) && (errno != 0))
1999 {
2000 qstr(sk, "$Error Could not send file list|");
2001 return;
2002 } else if(fd >= 0) {
2003 if((buf2 = icsmbstowcs(args, charset, NULL)) != NULL)
2004 transfersetpath(peer->transfer, buf2);
f00d7432 2005 peer->transfer->flags.b.minislot = 1;
d3372da9 2006 }
2007 if(fd < 0)
2008 {
d3372da9 2009 if((node = resdcpath(p, charset, '\\')) == NULL)
2010 {
2011 qstr(sk, "$Error File not in cache|");
2012 return;
2013 }
2014 if((fd = opensharecache(node)) < 0)
2015 {
2016 qstrf(sk, "$Error %s|", strerror(errno));
2017 return;
2018 }
2019 buf = getfspath(node);
2020 if((buf2 = icsmbstowcs(buf, NULL, NULL)) == NULL)
2021 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
2022 else
2023 transfersetpath(peer->transfer, buf2);
2024 free(buf);
2025 }
2026 if(fstat(fd, &sb) < 0)
2027 {
2028 close(fd);
2029 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
2030 qstr(sk, "$Error|");
2031 return;
2032 }
f00d7432 2033 if(sb.st_size < 65536)
2034 peer->transfer->flags.b.minislot = 1;
2035 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
565006d1 2036 close(fd);
f00d7432 2037 qstr(sk, "$MaxedOut|");
2038 return;
2039 }
d3372da9 2040 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
2041 {
2042 close(fd);
2043 qstr(sk, "$Error Offset out of range|");
2044 return;
2045 }
2046 if((numbytes < 0) || (start + numbytes > sb.st_size))
2047 numbytes = sb.st_size - start;
2048 lesk = wrapsock(fd);
2049 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2050 putsock(lesk);
2051 qstrf(sk, "$Sending %i|", numbytes);
9a2d6cb8 2052 startul(peer);
d3372da9 2053}
2054
2055static void cmd_adcget(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2056{
2057 int i;
2058 char **argv, *buf;
2059 int start, numbytes;
2060 struct sharecache *node;
2061 struct stat sb;
2062 struct socket *lesk;
2063 wchar_t *wbuf;
2064 int fd;
2065
2066 if(peer->transfer == NULL)
2067 {
2068 freedcpeer(peer);
2069 return;
2070 }
2071 if((argv = parseadc(args)) == NULL)
2072 {
2073 freedcpeer(peer);
2074 return;
2075 }
2076 if(parrlen(argv) < 4)
2077 {
2078 freedcpeer(peer);
2079 goto out;
2080 }
2081 start = atoi(argv[2]);
2082 numbytes = atoi(argv[3]);
2083 node = NULL;
2084 fd = -1;
2085 if(((fd = openfilelist(argv[1])) < 0) && (errno != 0))
2086 {
2087 qstr(sk, "$Error Could not send file list|");
2088 goto out;
2089 } else if(fd >= 0) {
2090 if((wbuf = icsmbstowcs(argv[1], "UTF-8", NULL)) != NULL)
2091 transfersetpath(peer->transfer, wbuf);
f00d7432 2092 peer->transfer->flags.b.minislot = 1;
d3372da9 2093 }
2094 if(fd < 0)
2095 {
d3372da9 2096 if(!strncmp(argv[1], "TTH/", 4))
2097 {
2098 if((node = findbytth(argv[1] + 4)) == NULL)
2099 {
2100 qstr(sk, "$Error File not in cache|");
2101 goto out;
2102 }
2103 } else {
9a2d6cb8 2104 if((node = resdcpath((argv[1][0] == '/')?(argv[1] + 1):(argv[1]), "UTF-8", '/')) == NULL)
d3372da9 2105 {
2106 qstr(sk, "$Error File not in cache|");
2107 goto out;
2108 }
2109 }
2110 if((fd = opensharecache(node)) < 0)
2111 {
2112 qstrf(sk, "$Error %s|", strerror(errno));
2113 goto out;
2114 }
2115 buf = getfspath(node);
2116 if((wbuf = icsmbstowcs(buf, NULL, NULL)) == NULL)
2117 flog(LOG_WARNING, "could not convert native path into a wcs (%s): %s", buf, strerror(errno));
2118 else
2119 transfersetpath(peer->transfer, wbuf);
2120 free(buf);
2121 }
2122 if(!strcmp(argv[0], "file"))
2123 {
2124 for(i = 4; argv[i] != NULL; i++)
2125 {
2126 if(!strcmp(argv[i], "ZL1"))
2127 initcompress(peer, CPRS_ZLIB);
2128 }
2129 if(fstat(fd, &sb) < 0)
2130 {
2131 flog(LOG_WARNING, "could not stat file %ls: %s", node->name, strerror(errno));
2132 qstr(sk, "$Error|");
2133 goto out;
2134 }
f00d7432 2135 if(sb.st_size < 65536)
2136 peer->transfer->flags.b.minislot = 1;
2137 if(!peer->transfer->flags.b.minislot && (slotsleft() < 1)) {
2138 qstr(sk, "$MaxedOut|");
2139 goto out;
2140 }
d3372da9 2141 if((start != 0) && ((start >= sb.st_size) || (lseek(fd, start, SEEK_SET) < 0)))
2142 {
2143 qstr(sk, "$Error Offset out of range|");
2144 goto out;
2145 }
2146 if((numbytes < 0) || (start + numbytes > sb.st_size))
2147 numbytes = sb.st_size - start;
2148 lesk = wrapsock(fd);
2149 transferprepul(peer->transfer, sb.st_size, start, start + numbytes, lesk);
2150 putsock(lesk);
2151 fd = -1;
2152 qstr(sk, "$ADCSND");
2153 sendadc(sk, "file");
2154 sendadc(sk, argv[1]);
2155 sendadcf(sk, "%i", start);
2156 sendadcf(sk, "%i", numbytes);
2157 if(peer->compress == CPRS_ZLIB)
2158 sendadc(sk, "ZL1");
2159 qstr(sk, "|");
9a2d6cb8 2160 startul(peer);
d3372da9 2161 } else if(!strcmp(argv[0], "tthl")) {
2162 /*
2163 * XXX: Implement full TTHL support.
2164 *
2165 * In the meantime, this is better than nothing, since it at
2166 * least allows fetching of the TTH root if it isn't already
2167 * known.
2168 */
2169 if(node == NULL)
2170 {
2171 qstr(sk, "$Error no TTHL data for virtual files|");
2172 goto out;
2173 }
2174 qstr(sk, "$ADCSND");
2175 sendadc(sk, "tthl");
2176 sendadc(sk, argv[1]);
2177 sendadc(sk, "0");
2178 sendadc(sk, "24");
2179 qstr(sk, "|");
2180 sockqueue(sk, node->hashtth, 24);
2181 } else {
2182 qstr(sk, "$Error Namespace not implemented|");
2183 goto out;
2184 }
d3372da9 2185
2186 out:
2187 if(fd >= 0)
2188 close(fd);
2189 freeparr(argv);
2190}
2191
9a2d6cb8 2192static void handletthl(struct dcpeer *peer)
2193{
2194 char buf[24];
2195
2196 while(peer->inbufdata >= 24)
2197 {
2198 pushtigertree(&peer->tth, peer->inbuf);
2199 memmove(peer->inbuf, peer->inbuf + 24, peer->inbufdata -= 24);
e52006fe 2200 peer->curread += 24;
9a2d6cb8 2201 }
e52006fe 2202 if(peer->curread >= peer->totalsize)
9a2d6cb8 2203 {
1e9d82b1 2204 if(peer->timeout == NULL)
2205 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
9a2d6cb8 2206 peer->state = PEER_CMD;
2207 synctigertree(&peer->tth);
2208 restigertree(&peer->tth, buf);
2209 transfersethash(peer->transfer, newhash(L"TTH", 24, buf));
2210 requestfile(peer);
2211 }
2212}
2213
2214static void cmd_adcsnd(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2215{
2216 char **argv;
2217 int start, numbytes;
2218
2219 if(peer->transfer == NULL)
2220 {
2221 freedcpeer(peer);
2222 return;
2223 }
2224 if((argv = parseadc(args)) == NULL)
2225 {
2226 freedcpeer(peer);
2227 return;
2228 }
2229 if(parrlen(argv) < 4)
2230 {
2231 freedcpeer(peer);
2232 goto out;
2233 }
2234 start = atoi(argv[2]);
2235 numbytes = atoi(argv[3]);
2236 if(!strcmp(argv[0], "tthl"))
2237 {
2238 if((start != 0) || (numbytes % 24 != 0))
2239 {
2240 /* Weird. Bail out. */
2241 freedcpeer(peer);
2242 goto out;
2243 }
1e9d82b1 2244 if(peer->timeout != NULL)
2245 canceltimer(peer->timeout);
9a2d6cb8 2246 peer->state = PEER_TTHL;
2247 peer->totalsize = numbytes;
2248 peer->curread = 0;
df873cd0 2249 peer->fetchingtthl = 0;
9a2d6cb8 2250 inittigertree(&peer->tth);
2251 handletthl(peer);
2252 } else if(!strcmp(argv[0], "file")) {
2253 if(start != peer->transfer->curpos)
2254 {
2255 freedcpeer(peer);
2256 goto out;
2257 }
2258 if(start + numbytes != peer->transfer->size)
2259 {
2260 transfersetsize(peer->transfer, start + numbytes);
2261 freedcpeer(peer);
2262 goto out;
2263 }
2264 startdl(peer);
cab0b442 2265 if(peer->inbufdata > 0)
2266 {
2267 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2268 peer->inbufdata = 0;
2269 transread(sk, peer);
2270 }
9a2d6cb8 2271 } else {
2272 /* We certainly didn't request this...*/
2273 freedcpeer(peer);
2274 goto out;
2275 }
2276
2277 out:
2278 freeparr(argv);
2279}
2280
2281static void cmd_sending(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2282{
2283 int numbytes;
2284
2285 if(peer->transfer == NULL)
2286 {
2287 freedcpeer(peer);
2288 return;
2289 }
2290 numbytes = atoi(args);
2291 if(peer->transfer->size - peer->transfer->curpos != numbytes)
2292 {
2293 transfersetsize(peer->transfer, peer->transfer->curpos + numbytes);
2294 freedcpeer(peer);
2295 return;
2296 }
2297 startdl(peer);
cab0b442 2298 if(peer->inbufdata > 0)
2299 {
2300 sockpushdata(sk, peer->inbuf, peer->inbufdata);
2301 peer->inbufdata = 0;
2302 transread(sk, peer);
2303 }
9a2d6cb8 2304}
2305
d3372da9 2306/*
2307Hub skeleton:
2308static void cmd_(struct socket *sk, struct fnetnode *fn, char *cmd, char *args)
2309{
2310 struct dchub *hub;
2311
2312 hub = fn->data;
2313 hubhandleaction(sk, fn, cmd, args);
2314}
2315
2316Peer skeleton:
2317static void cmd_(struct socket *sk, struct dcpeer *peer, char *cmd, char *args)
2318{
d3372da9 2319}
2320
2321*/
2322
2323static int hubreqconn(struct fnetpeer *peer)
2324{
2325 struct dchub *hub;
2326 char *mbsnick;
2327
2328 if((peer->fn->state != FNN_EST) || (peer->fn->fnet != &dcnet))
2329 {
2330 errno = EINVAL;
2331 return(1);
2332 }
2333 if((hub = peer->fn->data) == NULL)
2334 {
2335 errno = EFAULT;
2336 return(1);
2337 }
1d85f24b 2338 if((mbsnick = icwcstombs(peer->id, hub->charset)) == NULL)
d3372da9 2339 return(1); /* Shouldn't happen, of course, but who knows... */
2340 if(tcpsock != NULL)
2341 {
2342 sendctm(peer->fn->sk, mbsnick);
2343 expectpeer(mbsnick, peer->fn);
2344 } else {
2345 qstrf(peer->fn->sk, "$RevConnectToMe %s %s|", hub->nativenick, mbsnick);
2346 }
2347 free(mbsnick);
2348 return(0);
2349}
2350
2351static int hubsendchat(struct fnetnode *fn, int public, wchar_t *to, wchar_t *string)
2352{
2353 struct dchub *hub;
2354 char *mbsstring, *mbsto;
2355
2356 hub = fn->data;
1d85f24b 2357 if((mbsto = icwcstombs(to, hub->charset)) == NULL)
d3372da9 2358 {
2359 errno = EILSEQ;
2360 return(1);
2361 }
1d85f24b 2362 if((mbsstring = icwcstombs(string, hub->charset)) == NULL)
d3372da9 2363 {
2364 errno = EILSEQ;
2365 return(1);
2366 }
2367 if((strchr(mbsto, '|') != NULL) || (strchr(mbsto, ' ') != NULL))
2368 {
2369 free(mbsto);
2370 free(mbsstring);
2371 errno = ESRCH;
2372 return(1);
2373 }
2374 if(strchr(mbsstring, '|') != NULL)
2375 {
2376 free(mbsto);
2377 free(mbsstring);
2378 errno = EILSEQ;
2379 return(1);
2380 }
2381 if(public)
2382 {
2383 if(*to == L'\0')
2384 {
2385 qstrf(fn->sk, "<%s> %s|", hub->nativenick, mbsstring);
2386 } else {
2387 qstrf(fn->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2388 }
2389 } else {
2390 qstrf(fn->sk, "$To: %s From: %s $<%s> %s|", mbsto, hub->nativenick, hub->nativenick, mbsstring);
2391 }
2392 free(mbsto);
2393 free(mbsstring);
2394 return(0);
2395}
2396
2397static void findsizelimit(struct sexpr *sexpr, int *min, int *max)
2398{
2399 int minl, maxl, minr, maxr, retmin, retmax;
2400
2401 switch(sexpr->op)
2402 {
2403 case SOP_AND:
2404 findsizelimit(sexpr->l, &minl, &maxl);
2405 findsizelimit(sexpr->r, &minr, &maxr);
2406 retmin = (minl > minr)?minl:minr;
2407 if((maxl != -1) && (maxr != -1))
2408 retmax = (maxl < maxr)?maxl:maxr;
2409 else if(maxl != -1)
2410 retmax = maxl;
2411 else if(maxr != -1)
2412 retmax = maxr;
2413 else
2414 retmax = -1;
2415 break;
2416 case SOP_OR:
2417 findsizelimit(sexpr->l, &minl, &maxl);
2418 findsizelimit(sexpr->r, &minr, &maxr);
2419 retmin = (minl < minr)?minl:minr;
2420 if((maxl == -1) || (maxr == -1))
2421 retmax = -1;
2422 else
2423 retmax = (maxl > maxr)?maxl:maxr;
2424 break;
2425 case SOP_NOT:
2426 findsizelimit(sexpr->l, &minl, &maxl);
2427 if((minl == 0) && (maxl == -1)) /* Interval is unspecified */
2428 {
2429 retmin = 0;
2430 retmax = -1;
2431 } else if((minl == 0) && (maxl != -1)) {
2432 retmin = maxl + 1;
2433 retmax = -1;
2434 } else if((minl != 0) && (maxl == -1)) {
2435 retmin = 0;
2436 retmax = minl - 1;
2437 } else { /* This would yield two seperate intervals, which DC cannot handle */
2438 retmin = 0;
2439 retmax = -1;
2440 }
2441 case SOP_SIZELT:
2442 retmin = 0;
2443 retmax = sexpr->d.n - 1;
2444 break;
2445 case SOP_SIZEEQ:
2446 retmin = sexpr->d.n;
2447 retmax = sexpr->d.n;
2448 break;
2449 case SOP_SIZEGT:
2450 retmin = sexpr->d.n + 1;
2451 retmax = -1;
2452 break;
2453 default:
2454 retmin = 0;
2455 retmax = -1;
2456 break;
2457 }
2458 if(min != NULL)
2459 *min = retmin;
2460 if(max != NULL)
2461 *max = retmax;
2462}
2463
9d8cf743 2464static struct hash *findsehash(struct sexpr *sexpr)
2465{
2466 struct hash *h1, *h2;
2467
2468 switch(sexpr->op)
2469 {
2470 case SOP_AND:
2471 if((h1 = findsehash(sexpr->l)) != NULL)
2472 return(h1);
2473 if((h1 = findsehash(sexpr->r)) != NULL)
2474 return(h1);
2475 break;
2476 case SOP_OR:
175c86de 2477 if((h1 = findsehash(sexpr->l)) == NULL)
2478 return(NULL);
2479 if((h2 = findsehash(sexpr->r)) == NULL)
2480 return(NULL);
9d8cf743 2481 if(hashcmp(h1, h2))
2482 return(h1);
2483 break;
2484 case SOP_HASHIS:
2485 if(!wcscmp(sexpr->d.hash->algo, L"TTH"))
2486 return(sexpr->d.hash);
2487 default:
2488 break;
2489 }
2490 return(NULL);
2491}
2492
d3372da9 2493static int hubsearch(struct fnetnode *fn, struct search *srch, struct srchfnnlist *ln)
2494{
2495 struct dchub *hub;
2496 struct wcslist *list, *cur;
2497 char *sstr, *buf, *p;
2498 size_t sstrsize, sstrdata;
2499 struct sockaddr *name;
2500 socklen_t namelen;
2501 int minsize, maxsize;
9d8cf743 2502 struct hash *hash;
d3372da9 2503
2504 hub = fn->data;
2505 if((fn->state != FNN_EST) || (fn->sk == NULL) || (fn->sk->state != SOCK_EST))
2506 return(1);
2507 list = findsexprstrs(srch->sexpr);
2508 findsizelimit(srch->sexpr, &minsize, &maxsize);
9d8cf743 2509 hash = findsehash(srch->sexpr);
d3372da9 2510 if((minsize != 0) && (maxsize != -1))
2511 {
2512 /* Choose either minsize or maxsize by trying to determine
2513 * which choice will be most restrictive. The result can be
2514 * approximative at best anyway, so don't try too hard... */
2515 if((50000000 - maxsize) > (minsize - 50000000))
2516 minsize = 0;
2517 else
2518 maxsize = -1;
2519 }
d3372da9 2520 sstr = NULL;
2521 sstrsize = sstrdata = 0;
9d8cf743 2522 if((hash != NULL) && (hash->len == 24))
d3372da9 2523 {
9d8cf743 2524 /* Prioritize hash searches above all else */
2525 bufcat(sstr, "F?T?0?9?TTH:", 12);
2526 buf = base32encode(hash->buf, hash->len);
2527
2528 bufcat(sstr, buf, 39);
2529 free(buf);
2530 } else {
2531 if(minsize != 0)
d3372da9 2532 {
9d8cf743 2533 sizebuf2(sstr, sstrdata + 32, 1);
fe42d689 2534 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?F?%i?1?", minsize);
9d8cf743 2535 } else if(maxsize != -1) {
2536 sizebuf2(sstr, sstrdata + 32, 1);
fe42d689 2537 sstrdata += snprintf(sstr + sstrdata, sstrsize - sstrdata, "T?T?%i?1?", maxsize);
9d8cf743 2538 } else {
2539 bufcat(sstr, "F?F?0?1?", 8);
2540 }
2541 if(list != NULL)
2542 {
2543 for(cur = list; cur != NULL; cur = cur->next)
d3372da9 2544 {
1d85f24b 2545 /* Use DCCHARSET in $Get paths until further researched... */
9d8cf743 2546 if((buf = icwcstombs(cur->str, DCCHARSET)) == NULL)
2547 {
2548 /* Can't find anything anyway if the search expression
2549 * requires characters outside DC's charset. There's
2550 * nothing technically wrong with the search itself,
2551 * however, so return success. This should be
2552 * considered as an optimization. */
2553 freesl(&list);
2554 if(sstr != NULL)
2555 free(sstr);
2556 return(0);
2557 }
2558 if(cur != list)
2559 addtobuf(sstr, '$');
2560 /*
2561 * It probably doesn't hurt if buf contains any extra
2562 * dollar signs - it will just result in extra search
2563 * terms, and the extraneous results will be filtered by
2564 * the search layer anyway. It hurts if it contains any
2565 * pipes, though, so let's sell them for money.
2566 */
2567 for(p = buf; *p; p++)
2568 {
2569 if(*p == '|')
2570 *p = '$';
2571 }
2572 bufcat(sstr, buf, strlen(buf));
2573 free(buf);
d3372da9 2574 }
9d8cf743 2575 } else {
2576 /* Will match all files... :-/ */
2577 addtobuf(sstr, '.');
d3372da9 2578 }
d3372da9 2579 }
2580 addtobuf(sstr, 0);
2581 if(tcpsock != NULL)
2582 {
9b5acc18 2583 if(sockgetremotename2(udpsock, fn->sk, &name, &namelen) < 0)
d3372da9 2584 {
2585 flog(LOG_WARNING, "cannot get address of UDP socket");
2586 } else {
9d8cf743 2587 qstrf(fn->sk, "$Search %s %s|", formataddress(name, namelen), sstr);
d3372da9 2588 free(name);
2589 }
2590 } else {
9d8cf743 2591 qstrf(fn->sk, "$Search Hub:%s %s|", hub->nativenick, sstr);
d3372da9 2592 }
2593 free(sstr);
2594 freesl(&list);
2595 fn->lastsrch = time(NULL);
2596 return(0);
2597}
2598
2599#undef skipcmd
2600#undef qstr
2601#undef qstrf
2602
2603#define cc(c) ((void (*)(struct socket *, void *, char *, char *))(c))
8b930085 2604static struct command hubcmds[] =
d3372da9 2605{
2606 {"$Lock", cc(cmd_lock)},
2607 {"$HubName", cc(cmd_hubname)},
2608 {"$Hello", cc(cmd_hello)},
2609 {"$Quit", cc(cmd_quit)},
2610 {"$NickList", cc(cmd_nicklist)},
2611 {"$OpList", cc(cmd_oplist)},
2612 {"$MyINFO", cc(cmd_myinfo)},
2613 {"$ForceMove", cc(cmd_forcemove)},
2614 {"$Search", cc(cmd_search)},
2615 {"$MultiSearch", cc(cmd_search)},
2616 {"$ConnectToMe", cc(cmd_connecttome)},
2617 {"$RevConnectToMe", cc(cmd_revconnecttome)},
2618 {"$GetNetInfo", cc(cmd_getnetinfo)},
2619 {"$To:", cc(cmd_to)},
2620 {"$SR", cc(cmd_sr)},
2621 {"$UserCommand", cc(cmd_usercommand)},
48509089 2622 {"$GetPass", cc(cmd_getpass)},
c9b3ad74 2623 {"$LogedIn", cc(cmd_logedin)}, /* sic */
08b74f8c 2624 {"$Supports", cc(cmd_hubsupports)},
d3372da9 2625 {NULL, NULL}
2626};
2627
8b930085 2628static struct command peercmds[] =
d3372da9 2629{
2630 {"$MyNick", cc(cmd_mynick)},
2631 {"$Lock", cc(cmd_peerlock)},
2632 {"$Direction", cc(cmd_direction)},
2633 {"$Key", cc(cmd_key)},
2634 {"$FileLength", cc(cmd_filelength)},
2635 {"$Error", cc(cmd_error)},
2636 {"$MaxedOut", cc(cmd_maxedout)},
2637 {"$Get", cc(cmd_get)},
2638 {"$Send", cc(cmd_send)},
2639 {"$Supports", cc(cmd_supports)},
2640 {"$GetBlock", cc(cmd_getblock)},
2641 {"$UGetBlock", cc(cmd_getblock)},
2642 {"$GetZBlock", cc(cmd_getblock)},
2643 {"$UGetZBlock", cc(cmd_getblock)},
2644 {"$ADCGET", cc(cmd_adcget)},
9a2d6cb8 2645 {"$ADCSND", cc(cmd_adcsnd), 1},
2646 {"$Sending", cc(cmd_sending), 1},
d3372da9 2647 {NULL, NULL}
2648};
2649#undef cc
2650
2651static void dctransdetach(struct transfer *transfer, struct dcpeer *peer)
2652{
cab0b442 2653 CBUNREG(transfer, trans_filterout, peer);
d3372da9 2654 if(peer->freeing)
2655 return;
2656 peer->transfer = NULL;
2657 freedcpeer(peer);
2658}
2659
2660static void dctransgotdata(struct transfer *transfer, struct dcpeer *peer)
2661{
2662 int ret;
2663 void *buf;
c7185019 2664 unsigned char outbuf[1024];
d3372da9 2665 z_stream *cstr;
2666 size_t bufsize;
2667
2668 if((peer->state == PEER_TRNS) || (peer->state == PEER_SYNC))
2669 {
2670 if(sockqueuesize(peer->sk) < 65536)
2671 {
2672 if((buf = transfergetdata(transfer, &bufsize)) != NULL)
2673 {
2674 if(peer->compress == CPRS_NONE)
2675 {
2676 sockqueue(peer->sk, buf, bufsize);
2677 } else if(peer->compress == CPRS_ZLIB) {
2678 cstr = peer->cprsdata;
2679 cstr->next_in = buf;
2680 cstr->avail_in = bufsize;
2681 while(cstr->avail_in > 0)
2682 {
2683 cstr->next_out = outbuf;
2684 cstr->avail_out = sizeof(outbuf);
2685 if((ret = deflate(cstr, 0)) != Z_OK)
2686 {
2687 flog(LOG_WARNING, "bug? deflate() did not return Z_OK (but rather %i)", ret);
2688 freedcpeer(peer);
2689 return;
2690 }
2691 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2692 }
2693 }
2694 free(buf);
2695 }
2696 if(peer->state == PEER_SYNC)
2697 {
2698 if(peer->compress == CPRS_ZLIB)
2699 {
2700 cstr = peer->cprsdata;
2701 cstr->next_in = NULL;
2702 cstr->avail_in = 0;
2703 do
2704 {
2705 cstr->next_out = outbuf;
2706 cstr->avail_out = sizeof(outbuf);
2707 ret = deflate(cstr, Z_FINISH);
2708 if((ret != Z_OK) && (ret != Z_STREAM_END))
2709 {
2710 flog(LOG_WARNING, "bug? deflate(Z_FINISH) did not return Z_OK (but rather %i)", ret);
2711 freedcpeer(peer);
2712 return;
2713 }
2714 sockqueue(peer->sk, outbuf, sizeof(outbuf) - cstr->avail_out);
2715 } while(ret != Z_STREAM_END);
2716 }
2717 if(peer->ptclose)
2718 {
2719 freedcpeer(peer);
2720 } else {
1e9d82b1 2721 if(peer->timeout == NULL)
2722 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 2723 peer->state = PEER_CMD;
2724 endcompress(peer);
2725 transfersetstate(transfer, TRNS_HS);
2726 socksettos(peer->sk, confgetint("fnet", "fnptos"));
bfc261fe 2727 transfer->flags.b.minislot = 0;
cab0b442 2728 peer->sk->writecb = NULL;
d3372da9 2729 }
2730 }
2731 }
2732 }
2733}
2734
2735static void dctransendofdata(struct transfer *transfer, struct dcpeer *peer)
2736{
2737 peer->state = PEER_SYNC;
2738 dctransgotdata(transfer, peer);
2739}
2740
2741static void dcwantdata(struct transfer *transfer, struct dcpeer *peer)
2742{
2743 if(transferdatasize(transfer) < 65536)
2744 peer->sk->ignread = 0;
2745}
2746
cab0b442 2747static void transread(struct socket *sk, struct dcpeer *peer)
d3372da9 2748{
cab0b442 2749 void *buf;
2750 size_t bufsize;
d3372da9 2751 struct transfer *transfer;
2752
cab0b442 2753 if((buf = sockgetinbuf(sk, &bufsize)) == NULL)
2754 return;
d3372da9 2755 if(peer->transfer == NULL)
2756 {
cab0b442 2757 free(buf);
d3372da9 2758 freedcpeer(peer);
2759 return;
2760 }
cab0b442 2761 transferputdata(peer->transfer, buf, bufsize);
2762 free(buf);
d3372da9 2763 if(peer->transfer->curpos >= peer->transfer->size)
2764 {
2765 transfer = peer->transfer;
2766 transferdetach(transfer);
2767 transferendofdata(transfer);
2768 return;
2769 }
2770 if(transferdatasize(peer->transfer) > 65535)
cab0b442 2771 sk->ignread = 1;
d3372da9 2772}
2773
cab0b442 2774static void transerr(struct socket *sk, int err, struct dcpeer *peer)
d3372da9 2775{
2776 struct transfer *transfer;
2777
2778 if((transfer = peer->transfer) == NULL)
cab0b442 2779 {
2780 freedcpeer(peer);
d3372da9 2781 return;
cab0b442 2782 }
d3372da9 2783 transferdetach(transfer);
2784 transferendofdata(transfer);
2785}
2786
cab0b442 2787static void transwrite(struct socket *sk, struct dcpeer *peer)
d3372da9 2788{
2789 if((peer->state != PEER_TRNS) && (peer->state != PEER_SYNC))
cab0b442 2790 return;
d3372da9 2791 if(peer->transfer == NULL)
2792 {
2793 freedcpeer(peer);
cab0b442 2794 return;
d3372da9 2795 }
2796 dctransgotdata(peer->transfer, peer);
2797}
2798
cab0b442 2799static void udpread(struct socket *sk, void *data)
d3372da9 2800{
d86b7a9f 2801 char *buf, *p, *p2, *hashbuf;
2802 size_t buflen, hashlen;
d3372da9 2803 char *nick, *filename, *hubname;
99a28d47 2804 struct sockaddr_in hubaddr;
d3372da9 2805 int size, slots;
2806 struct fnetnode *fn, *myfn;
2807 struct dchub *hub;
2808 struct srchres *sr;
2809 wchar_t *wnick, *wfile;
d86b7a9f 2810 struct hash *hash;
d3372da9 2811
2812 if((buf = sockgetinbuf(sk, &buflen)) == NULL)
cab0b442 2813 return;
d3372da9 2814 buf = srealloc(buf, buflen + 1);
2815 buf[buflen] = 0;
2816 if(!strncmp(buf, "$SR ", 4))
2817 {
2818 p = buf + 4;
2819 nick = p;
2820 if((p2 = strchr(p, ' ')) == NULL)
2821 {
2822 free(buf);
cab0b442 2823 return;
d3372da9 2824 }
2825 *p2 = 0;
2826 p = p2 + 1;
2827 filename = p;
2828 if((p2 = strchr(p, 5)) == NULL)
2829 {
2830 free(buf);
cab0b442 2831 return;
d3372da9 2832 }
2833 *p2 = 0;
2834 p = p2 + 1;
2835 if((p2 = strchr(p, ' ')) == NULL)
2836 {
2837 free(buf);
cab0b442 2838 return;
d3372da9 2839 }
2840 *p2 = 0;
2841 size = atoi(p);
2842 p = p2 + 1;
2843 if((p2 = strchr(p, '/')) == NULL)
2844 {
2845 free(buf);
cab0b442 2846 return;
d3372da9 2847 }
2848 *p2 = 0;
2849 slots = atoi(p);
2850 p = p2 + 1;
2851 if((p2 = strchr(p, 5)) == NULL)
2852 {
2853 free(buf);
cab0b442 2854 return;
d3372da9 2855 }
2856 p = p2 + 1;
2857 hubname = p;
2858 if((p2 = strstr(p, " (")) == NULL)
2859 {
2860 free(buf);
cab0b442 2861 return;
d3372da9 2862 }
2863 *p2 = 0;
99a28d47 2864 p = p2 + 2;
2865 if((p2 = strchr(p, ':')) == NULL)
2866 {
2867 free(buf);
cab0b442 2868 return;
99a28d47 2869 }
870bf4ad 2870 *(p2++) = 0;
99a28d47 2871 hubaddr.sin_family = AF_INET;
2872 if(!inet_aton(p, &hubaddr.sin_addr))
2873 {
2874 free(buf);
cab0b442 2875 return;
99a28d47 2876 }
2877 p = p2;
2878 if((p2 = strchr(p, ')')) == NULL)
2879 {
2880 free(buf);
cab0b442 2881 return;
99a28d47 2882 }
2883 *p2 = 0;
2884 hubaddr.sin_port = htons(atoi(p));
1d85f24b 2885 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 2886 if((wfile = icmbstowcs(filename, DCCHARSET)) == NULL)
2887 {
d3372da9 2888 free(buf);
cab0b442 2889 return;
d3372da9 2890 }
2891 myfn = NULL;
d86b7a9f 2892 hash = NULL;
2893 if(!strncmp(hubname, "TTH:", 4))
d3372da9 2894 {
d86b7a9f 2895 if((hashbuf = base32decode(hubname + 4, &hashlen)) != NULL)
2896 {
2897 if(hashlen == 24)
2898 hash = newhash(L"TTH", 24, hashbuf);
2899 free(hashbuf);
2900 }
2901 } else {
2902 for(fn = fnetnodes; fn != NULL; fn = fn->next)
d3372da9 2903 {
d86b7a9f 2904 if((fn->fnet == &dcnet) && ((hub = fn->data) != NULL))
d3372da9 2905 {
d86b7a9f 2906 if((hub->nativename != NULL) && !strcmp(hub->nativename, hubname))
d3372da9 2907 {
d86b7a9f 2908 if(myfn == NULL)
2909 {
2910 myfn = fn;
2911 } else {
2912 myfn = NULL;
2913 break;
2914 }
d3372da9 2915 }
2916 }
2917 }
2918 }
99a28d47 2919 if(myfn == NULL)
2920 {
2921 for(fn = fnetnodes; fn != NULL; fn = fn->next)
2922 {
39cc1b93 2923 if((fn->fnet == &dcnet) && (fn->sk != NULL) && addreq(fn->sk->remote, (struct sockaddr *)&hubaddr))
99a28d47 2924 {
2925 myfn = fn;
2926 break;
2927 }
2928 }
2929 }
1d85f24b 2930 hub = NULL;
2931 if(myfn != NULL)
2932 hub = myfn->data;
2933 if((wnick = icmbstowcs(nick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
2934 {
2935 free(buf);
cab0b442 2936 return;
1d85f24b 2937 }
d3372da9 2938 sr = newsrchres(&dcnet, wfile, wnick);
2939 if(sr->peernick != NULL)
2940 free(sr->peernick);
2941 sr->peernick = swcsdup(wnick);
2942 sr->size = size;
2943 sr->slots = slots;
2944 free(wfile);
2945 free(wnick);
2946 if(myfn != NULL)
2947 getfnetnode(sr->fn = myfn);
d86b7a9f 2948 if(hash != NULL)
2949 sr->hash = hash;
d3372da9 2950 submitsrchres(sr);
2951 freesrchres(sr);
2952 }
2953 free(buf);
2954}
2955
2956static void hubread(struct socket *sk, struct fnetnode *fn)
2957{
2958 struct dchub *hub;
2959 char *newbuf;
2960 size_t datalen;
2961 char *p;
2962
2963 hub = (struct dchub *)fn->data;
2964 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
2965 return;
2966 if(hub->inbufdata > 500000) /* Discard possible malicious data */
2967 hub->inbufdata = 0;
2968 sizebuf2(hub->inbuf, hub->inbufdata + datalen, 1);
2969 memcpy(hub->inbuf + hub->inbufdata, newbuf, datalen);
2970 free(newbuf);
2971 p = hub->inbuf + hub->inbufdata;
2972 hub->inbufdata += datalen;
2973 while((datalen > 0) && ((p = memchr(p, '|', datalen)) != NULL))
2974 {
2975 *(p++) = 0;
2976 newqcmd(&hub->queue, hub->inbuf);
2977 memmove(hub->inbuf, p, hub->inbufdata -= p - hub->inbuf);
2978 datalen = hub->inbufdata;
2979 p = hub->inbuf;
2980 }
2981}
2982
2983static void huberr(struct socket *sk, int err, struct fnetnode *fn)
2984{
2985 killfnetnode(fn);
2986}
2987
2988static int hubsetnick(struct fnetnode *fn, wchar_t *newnick)
2989{
2990 struct dchub *hub;
2991 char *buf;
2992
2993 hub = fn->data;
1d85f24b 2994 if((buf = icwcstombs(newnick, (hub == NULL)?DCCHARSET:(hub->charset))) == NULL)
d3372da9 2995 return(1);
2996 if((strchr(buf, ' ') != NULL) || (strchr(buf, '|') != NULL) || (strchr(buf, '$') != NULL))
2997 {
2998 free(buf);
2999 return(1);
3000 }
3001 if(hub == NULL) /* Not yet connected */
3002 {
3003 free(buf);
3004 return(0);
3005 }
3006 if(hub->nativenick != NULL)
3007 free(hub->nativenick);
3008 hub->nativenick = buf;
3009 return(0);
3010}
3011
3012static struct dchub *newdchub(struct fnetnode *fn)
3013{
3014 struct dchub *new;
1c4b02cd 3015 wchar_t *emu;
1d85f24b 3016 wchar_t *wcharset;
3017 char *charset;
d3372da9 3018
3019 new = smalloc(sizeof(*new));
3020 memset(new, 0, sizeof(*new));
3021 fn->data = new;
1c4b02cd 3022 if(confgetint("dc", "dcppemu"))
3023 new->dcppemu = 1;
3024 if((emu = wpfind(fn->args, L"dcppemu")) != NULL)
3025 {
3026 if(*emu == L'y')
3027 new->dcppemu = 1;
3028 if(*emu == L'n')
3029 new->dcppemu = 0;
3030 }
1d85f24b 3031 charset = NULL;
3032 if((wcharset = wpfind(fn->args, L"charset")) != NULL)
3033 {
3034 if((charset = icwcstombs(wcharset, "US-ASCII")) != NULL)
3035 {
3036 if(!havecharset(charset))
3037 {
3038 free(charset);
3039 charset = NULL;
3040 }
3041 }
3042 }
3043 if(charset != NULL)
3044 new->charset = charset;
3045 else
3046 new->charset = sstrdup(DCCHARSET);
d3372da9 3047 if(hubsetnick(fn, fn->mynick))
3048 fnetsetnick(fn, L"DoldaConnectUser-IN");
3049 /* IN as in Invalid Nick */
3050 return(new);
3051}
3052
3053static struct dcpeer *newdcpeer(struct socket *sk)
3054{
3055 struct dcpeer *new;
3056
3057 new = smalloc(sizeof(*new));
3058 memset(new, 0, sizeof(*new));
3059 new->transfer = NULL;
3060 getsock(sk);
3061 new->sk = sk;
1c4b02cd 3062 if(confgetint("dc", "dcppemu"))
3063 new->dcppemu = 1;
d3372da9 3064 new->next = peers;
3065 new->prev = NULL;
3066 if(peers != NULL)
3067 peers->prev = new;
3068 peers = new;
3069 numdcpeers++;
3070 return(new);
3071}
3072
3073static void freedcpeer(struct dcpeer *peer)
3074{
3075 int i;
3076 struct qcommand *qcmd;
3077
3078 peer->freeing = 1;
3079 if(peers == peer)
3080 peers = peer->next;
3081 if(peer->next != NULL)
3082 peer->next->prev = peer->prev;
3083 if(peer->prev != NULL)
3084 peer->prev->next = peer->next;
3085 if(peer->transfer != NULL)
3086 {
3087 if(peer->transfer->dir == TRNSD_UP)
3088 peer->transfer->close = 1;
3089 if(peer->transfer->dir == TRNSD_DOWN)
3090 resettransfer(peer->transfer);
3091 transferdetach(peer->transfer);
3092 }
1e9d82b1 3093 if(peer->timeout != NULL)
3094 canceltimer(peer->timeout);
cab0b442 3095 if(peer->sk->data == peer)
3096 peer->sk->data = NULL;
3097 peer->sk->readcb = NULL;
3098 peer->sk->writecb = NULL;
3099 peer->sk->errcb = NULL;
d3372da9 3100 putsock(peer->sk);
3101 endcompress(peer);
3102 if(peer->supports != NULL)
3103 {
3104 for(i = 0; peer->supports[i] != NULL; i++)
3105 free(peer->supports[i]);
3106 free(peer->supports);
3107 }
d3372da9 3108 if(peer->inbuf != NULL)
3109 free(peer->inbuf);
3110 if(peer->key != NULL)
3111 free(peer->key);
3112 if(peer->wcsname != NULL)
3113 free(peer->wcsname);
3114 if(peer->nativename != NULL)
3115 free(peer->nativename);
1d85f24b 3116 if(peer->charset != NULL)
3117 free(peer->charset);
d3372da9 3118 if(peer->fn != NULL)
3119 putfnetnode(peer->fn);
3120 while((qcmd = ulqcmd(&peer->queue)) != NULL)
3121 freeqcmd(qcmd);
3122 free(peer);
3123 numdcpeers--;
3124}
3125
3126static void hubconnect(struct fnetnode *fn)
3127{
cab0b442 3128 fn->sk->readcb = (void (*)(struct socket *, void *))hubread;
3129 fn->sk->errcb = (void (*)(struct socket *, int, void *))huberr;
3130 getfnetnode(fn);
d3372da9 3131 fn->data = newdchub(fn);
cab0b442 3132 fn->sk->data = fn;
d3372da9 3133 return;
3134}
3135
3136static void hubdestroy(struct fnetnode *fn)
3137{
08b74f8c 3138 int i;
d3372da9 3139 struct dchub *hub;
3140 struct qcommand *qcmd;
3141
3142 hub = (struct dchub *)fn->data;
cab0b442 3143 if((fn->sk != NULL) && (fn->sk->data == fn))
d3372da9 3144 {
cab0b442 3145 fn->sk->data = NULL;
efda40ae 3146 fn->sk->readcb = NULL;
3147 fn->sk->errcb = NULL;
cab0b442 3148 putfnetnode(fn);
d3372da9 3149 }
3150 if(hub == NULL)
3151 return;
3152 while((qcmd = ulqcmd(&hub->queue)) != NULL)
3153 freeqcmd(qcmd);
08b74f8c
FT		 3154 if(hub->supports != NULL)
3155 {
3156 for(i = 0; hub->supports[i] != NULL; i++)
3157 free(hub->supports[i]);
3158 free(hub->supports);
3159 }
d3372da9 3160 if(hub->nativename != NULL)
3161 free(hub->nativename);
3162 if(hub->nativenick != NULL)
3163 free(hub->nativenick);
1d85f24b 3164 if(hub->charset != NULL)
3165 free(hub->charset);
d3372da9 3166 if(hub->inbuf != NULL)
3167 free(hub->inbuf);
3168 free(hub);
3169}
3170
3171static wchar_t *dcbasename(wchar_t *filename)
3172{
3173 wchar_t *ret;
3174
3175 if((ret = wcsrchr(filename, L'\\')) != NULL)
3176 return(ret + 1);
3177 return(filename);
3178}
3179
3180static struct transferiface dctransfer =
3181{
3182 .detach = (void (*)(struct transfer *, void *))dctransdetach,
3183 .gotdata = (void (*)(struct transfer *, void *))dctransgotdata,
3184 .endofdata = (void (*)(struct transfer *, void *))dctransendofdata,
3185 .wantdata = (void (*)(struct transfer *, void *))dcwantdata
3186};
3187
3188static struct fnet dcnet =
3189{
3190 .name = L"dc",
3191 .connect = hubconnect,
3192 .destroy = hubdestroy,
3193 .setnick = hubsetnick,
3194 .reqconn = hubreqconn,
3195 .sendchat = hubsendchat,
3196 .search = hubsearch,
3197 .filebasename = dcbasename
3198};
3199
cab0b442 3200static void peerread(struct socket *sk, struct dcpeer *peer)
d3372da9 3201{
cab0b442 3202 char *newbuf, *p;
5ec60e42 3203 size_t datalen;
cab0b442 3204 struct command *cmd;
5ec60e42 3205
d3372da9 3206 if((newbuf = sockgetinbuf(sk, &datalen)) == NULL)
cab0b442 3207 return;
d3372da9 3208 sizebuf2(peer->inbuf, peer->inbufdata + datalen, 1);
3209 memcpy(peer->inbuf + peer->inbufdata, newbuf, datalen);
3210 free(newbuf);
d3372da9 3211 peer->inbufdata += datalen;
9a2d6cb8 3212 if(peer->state == PEER_CMD)
d3372da9 3213 {
cab0b442 3214 p = peer->inbuf;
3215 while((peer->inbufdata > 0) && (p = memchr(peer->inbuf, '|', peer->inbufdata)) != NULL)
3216 {
3217 *(p++) = 0;
3218 newqcmd(&peer->queue, peer->inbuf);
3219 for(cmd = peercmds; cmd->handler != NULL; cmd++)
3220 {
3221 if(!memcmp(peer->inbuf, cmd->name, strlen(cmd->name)) && ((peer->inbuf[strlen(cmd->name)] == ' ') || (peer->inbuf[strlen(cmd->name)] == '|')))
3222 break;
3223 }
3224 memmove(peer->inbuf, p, peer->inbufdata -= p - peer->inbuf);
3225 if(cmd->stop)
3226 {
3227 peer->state = PEER_STOP;
3228 break;
3229 }
3230 }
9a2d6cb8 3231 } else if(peer->state == PEER_TTHL) {
3232 handletthl(peer);
d3372da9 3233 }
3234}
3235
cab0b442 3236static void peererror(struct socket *sk, int err, struct dcpeer *peer)
d3372da9 3237{
3238 freedcpeer(peer);
3239}
3240
cab0b442 3241static void peerconnect(struct socket *sk, int err, struct fnetnode *fn)
d3372da9 3242{
3243 struct dcpeer *peer;
1c4b02cd 3244 struct dchub *hub;
d3372da9 3245
3246 if(err != 0)
3247 {
3248 putfnetnode(fn);
ff625695 3249 putsock(sk);
cab0b442 3250 return;
d3372da9 3251 }
1c4b02cd 3252 hub = fn->data;
d3372da9 3253 peer = newdcpeer(sk);
3254 peer->fn = fn;
3255 peer->accepted = 0;
1c4b02cd 3256 peer->dcppemu = hub->dcppemu;
cab0b442 3257 sk->readcb = (void (*)(struct socket *, void *))peerread;
3258 sk->errcb = (void (*)(struct socket *, int, void *))peererror;
3259 sk->data = peer;
d3372da9 3260 socksettos(sk, confgetint("fnet", "fnptos"));
d3372da9 3261 putsock(sk);
1e9d82b1 3262 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
9a2d6cb8 3263 sendmynick(peer);
3264 sendpeerlock(peer);
d3372da9 3265}
3266
cab0b442 3267static void peeraccept(struct socket *sk, struct socket *newsk, void *data)
d3372da9 3268{
3269 struct dcpeer *peer;
3270
3271 peer = newdcpeer(newsk);
3272 peer->accepted = 1;
cab0b442 3273 newsk->readcb = (void (*)(struct socket *, void *))peerread;
3274 newsk->errcb = (void (*)(struct socket *, int, void *))peererror;
3275 newsk->data = peer;
d3372da9 3276 socksettos(newsk, confgetint("fnet", "fnptos"));
1e9d82b1 3277 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 3278}
3279
3280static void updatehmlist(void)
3281{
3282 int i, lev, ic, ret;
3283 struct sharecache *node;
3284 char *buf, *buf2, numbuf[32];
3285 size_t bufsize, bufdata;
3286 int fd, ibuf;
3287
3288 bufdata = 0;
3289 buf = smalloc(bufsize = 65536);
3290 node = shareroot->child;
3291 lev = 0;
3292 while(1)
3293 {
3294 ic = 0;
1d85f24b 3295 /* Use DCCHARSET in $Get paths until further researched... */
d3372da9 3296 if((buf2 = icwcstombs(node->name, DCCHARSET)) != NULL)
3297 {
3298 for(i = 0; i < lev; i++)
3299 addtobuf(buf, 9);
3300 bufcat(buf, buf2, strlen(buf2));
3301 free(buf2);
3302 if(node->f.b.type == FILE_REG)
3303 {
3304 addtobuf(buf, '|');
2f3d928f 3305 sprintf(numbuf, "%zi", node->size);
d3372da9 3306 bufcat(buf, numbuf, strlen(numbuf));
3307 }
3308 addtobuf(buf, 13);
3309 addtobuf(buf, 10);
3310 } else {
3311 ic = 1;
3312 }
3313 if((node->child != NULL) && !ic)
3314 {
3315 lev++;
3316 node = node->child;
3317 } else if(node->next != NULL) {
3318 node = node->next;
3319 } else {
3320 while(node->next == NULL)
3321 {
3322 lev--;
3323 node = node->parent;
3324 if(node == shareroot)
3325 break;
3326 }
3327 if(node == shareroot)
3328 break;
3329 node = node->next;
3330 }
3331 }
3332 if(hmlistname != NULL)
3333 {
3334 unlink(hmlistname);
3335 free(hmlistname);
3336 }
3337 hmlistname = sstrdup("/tmp/dc-filelist-hm-XXXXXX");
3338 if((fd = mkstemp(hmlistname)) < 0)
3339 {
3340 flog(LOG_WARNING, "could not create HM file list tempfile: %s", strerror(errno));
3341 free(hmlistname);
3342 hmlistname = NULL;
3343 } else {
3344 /*
3345 * I do not want to implement a good Huffman encoder, and it's not
3346 * like Huffman encoding actually yields any impressive results
3347 * for DC file lists anyway, so I'll just output a bogus
3348 * tree. Implement a good encoder if you want to.
3349 */
3350 write(fd, "HE3\r\0", 5);
3351 write(fd, &bufdata, 4);
3352 ibuf = 256;
3353 write(fd, &ibuf, 2);
3354 ibuf = 8;
3355 for(i = 0; i < 256; i++)
3356 {
3357 write(fd, &i, 1);
3358 write(fd, &ibuf, 1);
3359 }
3360 for(i = 0; i < 256; i++)
3361 write(fd, &i, 1);
3362 for(buf2 = buf; bufdata > 0;)
3363 {
3364 if((ret = write(fd, buf2, bufdata)) < 0)
3365 {
3366 flog(LOG_WARNING, "could not write file list: %s", strerror(errno));
3367 break;
3368 }
3369 bufdata -= ret;
3370 buf2 += ret;
3371 }
3372 close(fd);
3373 }
3374 free(buf);
3375}
3376
3377static struct xmlent
3378{
3379 wchar_t c;
3380 wchar_t *ent;
3381} entities[] = {
3382 {L'&', L"&amp;"},
3383 {L'\"', L"&#34;"},
3384/* {L'\'', L"&quot;"}, Emulate DC++ escaping by omitting this. */
3385 {L'\0', NULL}
3386};
3387
3388static wchar_t *escapexml(wchar_t *src)
3389{
3390 static wchar_t *buf = NULL;;
3391 int ret, c;
3392 wchar_t nbuf[32];
3393 size_t bufsize, bufdata;
3394 struct xmlent *ent;
3395
3396 if(buf != NULL)
3397 free(buf);
3398 buf = NULL;
3399 bufsize = bufdata = 0;
3400 for(; *src != L'\0'; src++)
3401 {
3402 c = wctob(*src);
3403 if((c > 0) && (c < 32))
3404 {
3405 bufcat(buf, L"&#", 2);
3406 ret = swprintf(nbuf, (sizeof(nbuf) / sizeof(*nbuf)), L"%i", c);
3407 bufcat(buf, nbuf, ret);
3408 addtobuf(buf, L';');
3409 } else {
3410 for(ent = entities; ent->ent != NULL; ent++)
3411 {
3412 if(ent->c == *src)
3413 {
3414 bufcat(buf, ent->ent, wcslen(ent->ent));
3415 break;
3416 }
3417 }
3418 if(ent->ent == NULL)
3419 addtobuf(buf, *src);
3420 }
3421 }
3422 addtobuf(buf, L'\0');
3423 return(buf);
3424}
3425
3426static void updatexmllist(void)
3427{
3428 int i, fd, lev;
3429 FILE *fs;
3430 char cidbuf[14], *namebuf;
3431 char *hashbuf;
3432 struct sharecache *node;
3433
3434 if(xmllistname != NULL)
3435 {
3436 unlink(xmllistname);
3437 free(xmllistname);
3438 }
3439 xmllistname = sstrdup("/tmp/dc-filelist-dcxml-XXXXXX");
3440 if((fd = mkstemp(xmllistname)) < 0)
3441 {
3442 flog(LOG_WARNING, "could not create XML file list tempfile: %s", strerror(errno));
3443 free(xmllistname);
3444 xmllistname = NULL;
3445 return;
3446 }
3447 if((fs = fdopen(fd, "w")) == NULL)
3448 {
3449 flog(LOG_WARNING, "could not fdopen XML list fd %i: %s", fd, strerror(errno));
3450 unlink(xmllistname);
3451 free(xmllistname);
3452 xmllistname = NULL;
3453 close(fd);
3454 return;
3455 }
3456 fprintf(fs, "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?>\r\n");
3457 for(i = 0; i < sizeof(cidbuf) - 1; i++)
3458 cidbuf[i] = (rand() % ('Z' - 'A' + 1)) + 'A';
3459 cidbuf[i] = 0;
1c4b02cd 3460 if(confgetint("dc", "dcppemu"))
3461 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"DC++ 0.674\">\r\n", cidbuf);
3462 else
3463 fprintf(fs, "<FileListing Version=\"1\" CID=\"%s\" Base=\"/\" Generator=\"%s\">\r\n", cidbuf, "DoldaConnect" VERSION);
d3372da9 3464
3465 node = shareroot->child;
3466 lev = 0;
3467 while(1)
3468 {
3469 if((namebuf = icswcstombs(escapexml(node->name), "UTF-8", NULL)) != NULL)
3470 {
3471 for(i = 0; i < lev; i++)
3472 fputc('\t', fs);
3473 if(node->child != NULL)
3474 {
3475 fprintf(fs, "<Directory Name=\"%s\">\r\n", namebuf);
3476 node = node->child;
3477 lev++;
3478 continue;
3479 } else {
2f3d928f 3480 fprintf(fs, "<File Name=\"%s\" Size=\"%zi\"", namebuf, node->size);
d3372da9 3481 if(node->f.b.hastth)
3482 {
3483 hashbuf = base32encode(node->hashtth, 24);
3484 fprintf(fs, " TTH=\"%.39s\"", hashbuf);
3485 free(hashbuf);
3486 }
3487 fprintf(fs, "/>\r\n");
3488 }
3489 while(node->next == NULL)
3490 {
3491 node = node->parent;
3492 if(node == shareroot)
3493 {
3494 break;
3495 } else {
3496 lev--;
3497 for(i = 0; i < lev; i++)
3498 fputc('\t', fs);
3499 fprintf(fs, "</Directory>\r\n");
3500 }
3501 }
3502 if(node == shareroot)
3503 break;
3504 node = node->next;
3505 }
3506 }
3507
1c4b02cd 3508 if(confgetint("dc", "dcppemu"))
3509 fprintf(fs, "</FileListing>");
3510 else
3511 fprintf(fs, "</FileListing>\r\n");
d3372da9 3512 fclose(fs);
3513}
3514
3515static void updatexmlbz2list(void)
3516{
3517 int err, fd;
3518 FILE *in;
3519 FILE *real;
3520 BZFILE *out;
3521 char buf[1024];
3522 size_t bufdata;
3523
3524 if(xmllistname == NULL)
3525 return;
3526 if((in = fopen(xmllistname, "r")) == NULL)
3527 {
3528 flog(LOG_WARNING, "could not open XML file list for bzipping: %s", strerror(errno));
3529 return;
3530 }
3531 if(xmlbz2listname != NULL)
3532 {
3533 unlink(xmlbz2listname);
3534 free(xmlbz2listname);
3535 }
3536 xmlbz2listname = sstrdup("/tmp/dc-filelist-dcxmlbz2-XXXXXX");
3537 if((fd = mkstemp(xmlbz2listname)) < 0)
3538 {
3539 flog(LOG_WARNING, "could not create bzipped XML file list tempfile: %s", strerror(errno));
3540 free(xmlbz2listname);
3541 xmlbz2listname = NULL;
3542 fclose(in);
3543 return;
3544 }
3545 if((real = fdopen(fd, "w")) == NULL)
3546 {
3547 flog(LOG_WARNING, "could not fdopen bzipped XML list fd %i: %s", fd, strerror(errno));
3548 close(fd);
3549 unlink(xmlbz2listname);
3550 free(xmlbz2listname);
3551 xmlbz2listname = NULL;
3552 fclose(in);
3553 return;
3554 }
3555 out = BZ2_bzWriteOpen(&err, real, 9, 0, 0);
3556 if(err != BZ_OK)
3557 {
3558 flog(LOG_WARNING, "could not open bzip2 stream from XML list");
3559 fclose(real);
3560 unlink(xmlbz2listname);
3561 free(xmlbz2listname);
3562 xmlbz2listname = NULL;
3563 fclose(in);
3564 return;
3565 }
3566 while(!feof(in))
3567 {
3568 bufdata = fread(buf, 1, sizeof(buf), in);
3569 BZ2_bzWrite(&err, out, buf, bufdata);
3570 }
3571 fclose(in);
3572 BZ2_bzWriteClose(&err, out, 0, NULL, NULL);
3573 fclose(real);
3574}
3575
6305c428 3576static void listtimercb(int cancelled, void *uudata)
3577{
3578 listwritetimer = NULL;
3579 if(!cancelled)
3580 updatelists(1);
3581}
3582
3583static void updatelists(int now)
d3372da9 3584{
000ca725 3585 if((hmlistname == NULL) || (xmllistname == NULL) || (xmlbz2listname == NULL))
3586 now = 1;
6305c428 3587 if(!now)
3588 {
3589 if(listwritetimer == NULL)
ddb3658e 3590 listwritetimer = timercallback(ntime() + confgetint("cli", "hashwritedelay"), listtimercb, NULL);
6305c428 3591 return;
3592 }
3593 if(listwritetimer != NULL)
3594 canceltimer(listwritetimer);
d3372da9 3595 updatehmlist();
3596 updatexmllist();
3597 updatexmlbz2list();
6305c428 3598}
3599
3600static int shareupdate(unsigned long long uusharesize, void *data)
3601{
3602 updatelists(0);
d3372da9 3603 return(0);
3604}
3605
7395a37f
FT		 3606static char *quotestr(char *str)
3607{
3608 unsigned char *buf;
3609 unsigned char *p;
3610 size_t bufsize, bufdata;
3611 wchar_t *wbuf;
3612 static char *enc = NULL;
3613 size_t encsize, encdata;
3614
3615 buf = NULL;
3616 bufsize = bufdata = 0;
3617 for(p = (unsigned char *)str; *p; p++)
3618 {
3619 if(*p == '\b')
3620 bufcat(buf, "\\b", 2);
3621 else if(*p == '\t')
3622 bufcat(buf, "\\t", 2);
3623 else if(*p == '\n')
3624 bufcat(buf, "\\n", 2);
3625 else if(*p == '\r')
3626 bufcat(buf, "\\r", 2);
3627 else if(*p == '\\')
3628 bufcat(buf, "\\\\", 2);
3629 else if(*p >= 32)
3630 addtobuf(buf, *p);
3631 else
3632 bprintf(buf, "\\x%02x", *p);
3633 }
3634 addtobuf(buf, 0);
3635 if(enc != NULL)
3636 free(enc);
3637 enc = NULL;
3638 if((wbuf = icmbstowcs((char *)buf, DCCHARSET)) != NULL)
3639 {
3640 enc = icwcstombs(wbuf, NULL);
3641 free(wbuf);
3642 }
3643 if(enc == NULL)
3644 {
3645 encsize = encdata = 0;
3646 for(p = buf; *p; p++) {
3647 if(*p < 128)
3648 addtobuf(enc, *p);
3649 else
3650 bprintf(buf, "\\x%x", *p);
3651 }
3652 }
3653 free(buf);
3654 return(enc);
3655}
3656
c1928259 3657static void logunimpl(char *list, char *cmd, char *args)
7395a37f
FT		 3658{
3659 FILE *log;
3660
3661 if((log = fopen("/tmp/dc-unimpl", "a")) == NULL)
3662 {
3663 flog(LOG_WARNING, "could not open unimpl log: %s", strerror(errno));
3664 return;
3665 }
c1928259
FT		 3666 fputs(list, log);
3667 fputc('\t', log);
7395a37f
FT		 3668 fputs(quotestr(cmd), log);
3669 if(args != NULL)
3670 {
3671 fputc('\t', log);
3672 fputs(quotestr(args), log);
3673 }
3674 fputc('\n', log);
3675 fclose(log);
3676}
3677
d3372da9 3678static void dispatchcommand(struct qcommand *qcmd, struct command *cmdlist, struct socket *sk, void *data)
3679{
3680 char *p;
3681 struct command *cmd;
3682
3683 if((p = strchr(qcmd->string, ' ')) != NULL)
3684 *(p++) = 0;
3685 for(cmd = cmdlist; cmd->handler != NULL; cmd++)
3686 {
3687 if(!strcmp(cmd->name, qcmd->string))
3688 break;
3689 }
3690 if(cmd->handler != NULL)
c1928259 3691 {
d3372da9 3692 cmd->handler(sk, data, qcmd->string, p);
c1928259
FT		 3693 } else if(confgetint("dc", "logunimpl")) {
3694 if(cmdlist == hubcmds)
3695 logunimpl("hub", qcmd->string, p);
3696 else if(cmdlist == peercmds)
3697 logunimpl("peer", qcmd->string, p);
3698 else
3699 logunimpl("other?!", qcmd->string, p);
3700 }
d3372da9 3701}
3702
3703static int run(void)
3704{
3705 struct fnetnode *fn, *nextfn;
3706 struct dchub *hub;
3707 struct dcpeer *peer, *nextpeer;
3708 struct qcommand *qcmd;
3709 int ret;
3710
3711 ret = 0;
3712 for(fn = fnetnodes; fn != NULL; fn = nextfn)
3713 {
3714 nextfn = fn->next;
3715 if(fn->fnet != &dcnet)
3716 continue;
3717 if(fn->data == NULL)
3718 continue;
3719 hub = (struct dchub *)fn->data;
3720 if((qcmd = ulqcmd(&hub->queue)) != NULL)
3721 {
3722 if(*qcmd->string == '$')
3723 {
3724 if((fn->sk != NULL) && (fn->sk->state == SOCK_EST))
3725 dispatchcommand(qcmd, hubcmds, fn->sk, fn);
3726 } else if(*qcmd->string != 0) {
3727 hubrecvchat(fn->sk, fn, NULL, qcmd->string);
3728 }
3729 freeqcmd(qcmd);
3730 ret = 1;
3731 break;
3732 }
3733 }
3734 for(peer = peers; peer != NULL; peer = nextpeer)
3735 {
3736 nextpeer = peer->next;
3737 if((qcmd = ulqcmd(&peer->queue)) != NULL)
3738 {
1e9d82b1 3739 if(peer->timeout != NULL)
3740 canceltimer(peer->timeout);
3741 peer->timeout = timercallback(ntime() + 180, (void (*)(int, void *))peertimeout, peer);
d3372da9 3742 if(*qcmd->string == '$')
3743 dispatchcommand(qcmd, peercmds, peer->sk, peer);
3744 freeqcmd(qcmd);
3745 ret = 1;
3746 break;
3747 }
3748 }
3749 return(ret);
3750}
3751
3752static void preinit(int hup)
3753{
3754 if(hup)
3755 return;
3756 regfnet(&dcnet);
3757}
3758
3759static int updateudpport(struct configvar *var, void *uudata)
3760{
3761 struct sockaddr_in addr;
3762 struct socket *newsock;
3763
3764 memset(&addr, 0, sizeof(addr));
3765 addr.sin_family = AF_INET;
3766 addr.sin_port = htons(var->val.num);
3767 if((newsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3768 {
3769 flog(LOG_WARNING, "could not create new DC UDP socket, reverting to old: %s", strerror(errno));
3770 return(0);
3771 }
cab0b442 3772 newsock->readcb = udpread;
d3372da9 3773 if(udpsock != NULL)
3774 putsock(udpsock);
3775 udpsock = newsock;
3776 return(0);
3777}
3778
3779static int updatetcpport(struct configvar *var, void *uudata)
3780{
3781 struct sockaddr_in addr;
3782 struct socket *newsock;
3783
3784 memset(&addr, 0, sizeof(addr));
3785 addr.sin_family = AF_INET;
3786 addr.sin_port = htons(var->val.num);
3787 if((newsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3788 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3789 if(tcpsock != NULL)
3790 putsock(tcpsock);
3791 tcpsock = newsock;
3792 return(0);
3793}
3794
3795static int init(int hup)
3796{
3797 struct sockaddr_in addr;
3798
3799 if(!hup)
3800 {
3801 GCBREG(sharechangecb, shareupdate, NULL);
3802 if(udpsock != NULL)
3803 putsock(udpsock);
3804 if(tcpsock != NULL)
3805 putsock(tcpsock);
3806 addr.sin_family = AF_INET;
3807 memset(&addr.sin_addr, 0, sizeof(addr.sin_addr));
3808 addr.sin_port = htons(confgetint("dc", "udpport"));
3809 if((udpsock = netcsdgram((struct sockaddr *)&addr, sizeof(addr))) == NULL)
3810 {
3811 flog(LOG_CRIT, "could not create DC UDP socket: %s", strerror(errno));
3812 return(1);
3813 }
cab0b442 3814 udpsock->readcb = udpread;
d3372da9 3815 addr.sin_port = htons(confgetint("dc", "tcpport"));
3816 if((tcpsock = netcslisten(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), peeraccept, NULL)) == NULL)
3817 flog(LOG_INFO, "could not listen to a remote address, going into passive mode");
3818 CBREG(confgetvar("dc", "udpport"), conf_update, updateudpport, NULL, NULL);
3819 CBREG(confgetvar("dc", "tcpport"), conf_update, updatetcpport, NULL, NULL);
3820 CBREG(confgetvar("net", "mode"), conf_update, updatetcpport, NULL, NULL);
3821 }
3822 return(0);
3823}
3824
3825static void terminate(void)
3826{
3827 if(hmlistname != NULL)
3828 {
3829 unlink(hmlistname);
3830 free(hmlistname);
3831 }
3832 if(xmllistname != NULL)
3833 {
3834 unlink(xmllistname);
3835 free(xmllistname);
3836 }
3837 if(xmlbz2listname != NULL)
3838 {
3839 unlink(xmlbz2listname);
3840 free(xmlbz2listname);
3841 }
3842}
3843
3844static struct configvar myvars[] =
3845{
d9f89ef5 3846 /** Specifies the share description reported to other DC users. */
d3372da9 3847 {CONF_VAR_STRING, "desc", {.str = L""}},
d9f89ef5 3848 /** Specifies the speed reported to other DC users. Normal values
3849 * are 28.8Kbps, 33.6Kbps, 56Kbps, Satellite, ISDN, DSL, Cable,
3850 * LAN(T1) or LAN(T3)*/
d3372da9 3851 {CONF_VAR_STRING, "speedstring", {.str = L"LAN(T1)"}},
d9f89ef5 3852 /** The e-mail address to report to other DC users. */
d3372da9 3853 {CONF_VAR_STRING, "email", {.str = L"spam@spam.org"}},
d9f89ef5 3854 /** Specifies a specific UDP port to use for DC search results. If
3855 * left unspecified, a port is allocated dynamically. Useful for
3856 * NAT routers (see also the net.visibleipv4 address for those
3857 * cases). */
d3372da9 3858 {CONF_VAR_INT, "udpport", {.num = 0}},
d9f89ef5 3859 /** Specifies a specific TCP port to use for DC peer
3860 * connections. If left unspecified, a port is allocated
3861 * dynamically. Useful for NAT routers (see also the
3862 * net.visibleipv4 address for those cases). */
d3372da9 3863 {CONF_VAR_INT, "tcpport", {.num = 0}},
d9f89ef5 3864 /** If set to true, doldacond will do its best to emulate DC++
3865 * (currently v0.674). This should be left off if at all possible,
3866 * since turning it on will violate the rules of most hubs and
3867 * thus give hub owners an actual reason to kick you if it is
3868 * detected. It might be needed for some of the more bone-headed
3869 * hub owners, though. Note that DC++ emulation can also be turned
3870 * on or off for individual hubs, overriding this setting. */
1c4b02cd 3871 {CONF_VAR_BOOL, "dcppemu", {.num = 0}},
7395a37f
FT		 3872 /** Use for debugging. If set to true, doldacond will log all
3873 * unknown commands it receives, and their arguments, to
3874 * /tmp/dc-unimpl. */
3875 {CONF_VAR_BOOL, "logunimpl", {.num = 0}},
d3372da9 3876 {CONF_VAR_END}
3877};
3878
3879static struct module me =
3880{
3881 .conf =
3882 {
3883 .vars = myvars
3884 },
3885 .preinit = preinit,
3886 .init = init,
3887 .run = run,
3888 .terminate = terminate,
3889 .name = "dc"
3890};
3891
3892MODULE(me)
Dolda Connect