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