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 <string.h> |
21 | #include <time.h> |
22 | #include <unistd.h> |
23 | #include <fcntl.h> |
24 | #include <signal.h> |
25 | #include <pwd.h> |
26 | #include <grp.h> |
27 | #include <errno.h> |
28 | #include <sys/wait.h> |
29 | |
30 | #ifdef HAVE_CONFIG_H |
31 | #include <config.h> |
32 | #endif |
33 | #include "log.h" |
34 | #include "utils.h" |
35 | #include "sysevents.h" |
36 | #include "auth.h" |
37 | #include "transfer.h" |
38 | #include "module.h" |
429d35e5 |
39 | #include "client.h" |
d3372da9 |
40 | |
41 | static void killfilter(struct transfer *transfer); |
42 | |
43 | struct transfer *transfers = NULL; |
44 | int numtransfers = 0; |
45 | GCBCHAIN(newtransfercb, struct transfer *); |
46 | |
47 | void freetransfer(struct transfer *transfer) |
48 | { |
49 | struct transarg *ta; |
50 | |
51 | if(transfer == transfers) |
52 | transfers = transfer->next; |
53 | if(transfer->next != NULL) |
54 | transfer->next->prev = transfer->prev; |
55 | if(transfer->prev != NULL) |
56 | transfer->prev->next = transfer->next; |
57 | CBCHAINDOCB(transfer, trans_destroy, transfer); |
58 | CBCHAINFREE(transfer, trans_ac); |
59 | CBCHAINFREE(transfer, trans_act); |
60 | CBCHAINFREE(transfer, trans_p); |
61 | CBCHAINFREE(transfer, trans_destroy); |
62 | CBCHAINFREE(transfer, trans_filterout); |
63 | while((ta = transfer->args) != NULL) |
64 | { |
65 | transfer->args = ta->next; |
66 | free(ta->rec); |
67 | free(ta->val); |
68 | free(ta); |
69 | } |
70 | if(transfer->filter != -1) |
71 | killfilter(transfer); |
72 | if(transfer->etimer != NULL) |
73 | canceltimer(transfer->etimer); |
74 | if(transfer->auth != NULL) |
75 | authputhandle(transfer->auth); |
76 | if(transfer->peerid != NULL) |
77 | free(transfer->peerid); |
78 | if(transfer->peernick != NULL) |
79 | free(transfer->peernick); |
80 | if(transfer->path != NULL) |
81 | free(transfer->path); |
82 | if(transfer->actdesc != NULL) |
83 | free(transfer->actdesc); |
84 | if(transfer->filterbuf != NULL) |
85 | free(transfer->filterbuf); |
429d35e5 |
86 | if(transfer->hash != NULL) |
87 | freehash(transfer->hash); |
d3372da9 |
88 | if(transfer->localend != NULL) |
89 | { |
90 | transfer->localend->readcb = NULL; |
91 | transfer->localend->writecb = NULL; |
92 | transfer->localend->errcb = NULL; |
93 | putsock(transfer->localend); |
94 | } |
95 | if(transfer->filterout != NULL) |
96 | { |
97 | transfer->filterout->readcb = NULL; |
98 | transfer->filterout->writecb = NULL; |
99 | transfer->filterout->errcb = NULL; |
100 | putsock(transfer->filterout); |
101 | } |
102 | if(transfer->fn != NULL) |
103 | putfnetnode(transfer->fn); |
104 | free(transfer); |
105 | numtransfers--; |
106 | } |
107 | |
108 | struct transfer *newtransfer(void) |
109 | { |
110 | struct transfer *new; |
111 | static int curid = 0; |
112 | |
113 | new = smalloc(sizeof(*new)); |
114 | memset(new, 0, sizeof(*new)); |
115 | new->id = curid++; |
116 | new->size = -1; |
117 | new->endpos = -1; |
118 | new->filter = -1; |
119 | CBCHAININIT(new, trans_ac); |
120 | CBCHAININIT(new, trans_act); |
121 | CBCHAININIT(new, trans_p); |
122 | CBCHAININIT(new, trans_destroy); |
123 | CBCHAININIT(new, trans_filterout); |
124 | new->next = NULL; |
125 | new->prev = NULL; |
126 | time(&new->activity); |
127 | numtransfers++; |
128 | return(new); |
129 | } |
130 | |
131 | void transferaddarg(struct transfer *transfer, wchar_t *rec, wchar_t *val) |
132 | { |
133 | struct transarg *ta; |
134 | |
135 | ta = smalloc(sizeof(*ta)); |
136 | ta->rec = swcsdup(rec); |
137 | ta->val = swcsdup(val); |
138 | ta->next = transfer->args; |
139 | transfer->args = ta; |
140 | } |
141 | |
142 | void transferattach(struct transfer *transfer, struct transferiface *iface, void *data) |
143 | { |
144 | if(transfer->iface != NULL) |
145 | transferdetach(transfer); |
146 | transfer->iface = iface; |
147 | transfer->ifacedata = data; |
148 | } |
149 | |
150 | void transferdetach(struct transfer *transfer) |
151 | { |
152 | if(transfer->iface != NULL) |
153 | { |
154 | transfer->iface->detach(transfer, transfer->ifacedata); |
155 | transfer->iface = NULL; |
156 | transfer->ifacedata = NULL; |
157 | } |
158 | } |
159 | |
2c086721 |
160 | struct transfer *finddownload(wchar_t *peerid) |
161 | { |
162 | struct transfer *transfer; |
163 | |
164 | for(transfer = transfers; transfer != NULL; transfer = transfer->next) |
165 | { |
166 | if((transfer->dir == TRNSD_DOWN) && (transfer->iface == NULL) && !wcscmp(peerid, transfer->peerid)) |
167 | break; |
168 | } |
169 | return(transfer); |
170 | } |
171 | |
d3372da9 |
172 | struct transfer *newupload(struct fnetnode *fn, struct fnet *fnet, wchar_t *nickid, struct transferiface *iface, void *data) |
173 | { |
174 | struct transfer *transfer; |
175 | |
176 | transfer = newtransfer(); |
177 | if(fnet != NULL) |
178 | transfer->fnet = fnet; |
179 | else |
180 | transfer->fnet = fn->fnet; |
181 | transfer->peerid = swcsdup(nickid); |
182 | transfer->state = TRNS_HS; |
183 | transfer->dir = TRNSD_UP; |
184 | if(fn != NULL) |
185 | getfnetnode(transfer->fn = fn); |
186 | transferattach(transfer, iface, data); |
187 | linktransfer(transfer); |
188 | bumptransfer(transfer); |
189 | return(transfer); |
190 | } |
191 | |
192 | void linktransfer(struct transfer *transfer) |
193 | { |
194 | transfer->next = transfers; |
195 | transfer->prev = NULL; |
196 | if(transfers != NULL) |
197 | transfers->prev = transfer; |
198 | transfers = transfer; |
199 | GCBCHAINDOCB(newtransfercb, transfer); |
200 | } |
201 | |
202 | void resettransfer(struct transfer *transfer) |
203 | { |
204 | if(transfer->dir == TRNSD_DOWN) |
205 | { |
206 | if(transfer->iface != NULL) |
207 | transferdetach(transfer); |
208 | killfilter(transfer); |
209 | transfersetstate(transfer, TRNS_WAITING); |
210 | transfersetactivity(transfer, L"reset"); |
211 | return; |
212 | } |
213 | } |
214 | |
215 | struct transfer *findtransfer(int id) |
216 | { |
217 | struct transfer *transfer; |
218 | |
219 | for(transfer = transfers; transfer != NULL; transfer = transfer->next) |
220 | { |
221 | if(transfer->id == id) |
222 | break; |
223 | } |
224 | return(transfer); |
225 | } |
226 | |
227 | static void transexpire(int cancelled, struct transfer *transfer) |
228 | { |
229 | transfer->etimer = NULL; |
230 | if(!cancelled) |
231 | bumptransfer(transfer); |
232 | else |
233 | transfer->timeout = 0; |
234 | } |
235 | |
236 | static void transferread(struct socket *sk, struct transfer *transfer) |
237 | { |
238 | if(sockgetdatalen(sk) >= 65536) |
239 | sk->ignread = 1; |
240 | if((transfer->iface != NULL) && (transfer->iface->gotdata != NULL)) |
241 | transfer->iface->gotdata(transfer, transfer->ifacedata); |
242 | } |
243 | |
244 | static void transferwrite(struct socket *sk, struct transfer *transfer) |
245 | { |
246 | if((transfer->iface != NULL) && (transfer->iface->wantdata != NULL)) |
247 | transfer->iface->wantdata(transfer, transfer->ifacedata); |
248 | } |
249 | |
250 | static void transfererr(struct socket *sk, int errno, struct transfer *transfer) |
251 | { |
252 | if((transfer->iface != NULL) && (transfer->iface->endofdata != NULL)) |
253 | transfer->iface->endofdata(transfer, transfer->ifacedata); |
254 | } |
255 | |
256 | void transferputdata(struct transfer *transfer, void *buf, size_t size) |
257 | { |
258 | time(&transfer->activity); |
259 | sockqueue(transfer->localend, buf, size); |
260 | transfer->curpos += size; |
261 | CBCHAINDOCB(transfer, trans_p, transfer); |
262 | } |
263 | |
264 | void transferendofdata(struct transfer *transfer) |
265 | { |
266 | if(transfer->curpos >= transfer->size) |
267 | { |
268 | transfersetstate(transfer, TRNS_DONE); |
269 | transfer->localend->readcb = NULL; |
270 | transfer->localend->writecb = NULL; |
271 | transfer->localend->errcb = NULL; |
272 | putsock(transfer->localend); |
273 | transfer->localend = NULL; |
274 | } else { |
275 | resettransfer(transfer); |
276 | } |
277 | } |
278 | |
279 | size_t transferdatasize(struct transfer *transfer) |
280 | { |
281 | return(sockqueuesize(transfer->localend)); |
282 | } |
283 | |
284 | void *transfergetdata(struct transfer *transfer, size_t *size) |
285 | { |
286 | void *buf; |
287 | |
288 | if(transfer->localend == NULL) |
289 | return(NULL); |
290 | transfer->localend->ignread = 0; |
291 | time(&transfer->activity); |
292 | if((buf = sockgetinbuf(transfer->localend, size)) == NULL) |
293 | return(NULL); |
294 | if((transfer->endpos >= 0) && (transfer->curpos + *size >= transfer->endpos)) |
295 | { |
296 | *size = transfer->endpos - transfer->curpos; |
297 | buf = srealloc(buf, *size); |
298 | } |
299 | transfer->curpos += *size; |
300 | CBCHAINDOCB(transfer, trans_p, transfer); |
301 | return(buf); |
302 | } |
303 | |
304 | void transferprepul(struct transfer *transfer, size_t size, size_t start, size_t end, struct socket *lesk) |
305 | { |
306 | transfersetsize(transfer, size); |
307 | transfer->curpos = start; |
308 | transfer->endpos = end; |
309 | lesk->ignread = 1; |
310 | transfersetlocalend(transfer, lesk); |
311 | } |
312 | |
2c086721 |
313 | void transferstartdl(struct transfer *transfer, struct socket *sk) |
314 | { |
315 | transfersetstate(transfer, TRNS_MAIN); |
316 | socksettos(sk, confgetint("transfer", "dltos")); |
317 | } |
318 | |
d3372da9 |
319 | void transferstartul(struct transfer *transfer, struct socket *sk) |
320 | { |
321 | transfersetstate(transfer, TRNS_MAIN); |
322 | socksettos(sk, confgetint("transfer", "ultos")); |
323 | if(transfer->localend != NULL) |
324 | transfer->localend->ignread = 0; |
325 | } |
326 | |
327 | void transfersetlocalend(struct transfer *transfer, struct socket *sk) |
328 | { |
329 | if(transfer->localend != NULL) |
330 | putsock(transfer->localend); |
331 | getsock(transfer->localend = sk); |
332 | sk->data = transfer; |
333 | sk->readcb = (void (*)(struct socket *, void *))transferread; |
334 | sk->writecb = (void (*)(struct socket *, void *))transferwrite; |
335 | sk->errcb = (void (*)(struct socket *, int, void *))transfererr; |
336 | } |
337 | |
338 | void bumptransfer(struct transfer *transfer) |
339 | { |
340 | struct fnetnode *fn; |
341 | struct fnetpeer *peer; |
342 | time_t now; |
343 | |
344 | if((now = time(NULL)) < transfer->timeout) |
345 | { |
346 | if(transfer->etimer == NULL) |
347 | transfer->etimer = timercallback(transfer->timeout, (void (*)(int, void *))transexpire, transfer); |
348 | return; |
349 | } |
350 | if(transfer->etimer != NULL) |
351 | canceltimer(transfer->etimer); |
352 | switch(transfer->state) |
353 | { |
354 | case TRNS_WAITING: |
355 | if(transfer->fn != NULL) |
356 | { |
357 | fn = transfer->fn; |
358 | if(fn->state != FNN_EST) |
359 | { |
360 | transfer->close = 1; |
361 | return; |
362 | } |
363 | peer = fnetfindpeer(fn, transfer->peerid); |
364 | } else { |
365 | peer = NULL; |
366 | for(fn = fnetnodes; fn != NULL; fn = fn->next) |
367 | { |
368 | if((fn->state == FNN_EST) && (fn->fnet == transfer->fnet) && ((peer = fnetfindpeer(fn, transfer->peerid)) != NULL)) |
369 | break; |
370 | } |
371 | } |
372 | transfer->etimer = timercallback(transfer->timeout = (time(NULL) + 30), (void (*)(int, void *))transexpire, transfer); |
373 | if(now - transfer->lastreq > 30) |
374 | { |
375 | if(peer != NULL) |
376 | { |
377 | fn->fnet->reqconn(peer); |
378 | time(&transfer->lastreq); |
379 | } |
380 | } |
381 | break; |
382 | case TRNS_HS: |
383 | if(transfer->dir == TRNSD_UP) |
384 | { |
385 | if(now - transfer->activity < 60) |
386 | transfer->etimer = timercallback(transfer->timeout = (time(NULL) + 60), (void (*)(int, void *))transexpire, transfer); |
387 | else |
388 | transfer->close = 1; |
389 | } else if(transfer->dir == TRNSD_DOWN) { |
390 | if(now - transfer->activity < 60) |
391 | transfer->etimer = timercallback(transfer->timeout = (time(NULL) + 60), (void (*)(int, void *))transexpire, transfer); |
392 | else |
393 | resettransfer(transfer); |
394 | } |
395 | break; |
396 | case TRNS_MAIN: |
397 | if(transfer->dir == TRNSD_UP) |
398 | { |
399 | if(now - transfer->activity < 300) |
400 | transfer->etimer = timercallback(transfer->timeout = (time(NULL) + 300), (void (*)(int, void *))transexpire, transfer); |
401 | else |
402 | transfer->close = 1; |
403 | } |
404 | break; |
405 | } |
406 | } |
407 | |
408 | void transfersetactivity(struct transfer *transfer, wchar_t *desc) |
409 | { |
410 | time(&transfer->activity); |
411 | if(desc != NULL) |
412 | { |
413 | if(transfer->actdesc != NULL) |
414 | free(transfer->actdesc); |
415 | transfer->actdesc = swcsdup(desc); |
416 | } |
417 | bumptransfer(transfer); |
418 | CBCHAINDOCB(transfer, trans_act, transfer); |
419 | } |
420 | |
421 | void transfersetstate(struct transfer *transfer, int newstate) |
422 | { |
423 | transfer->state = newstate; |
424 | if(transfer->etimer != NULL) |
425 | canceltimer(transfer->etimer); |
426 | transfersetactivity(transfer, NULL); |
427 | CBCHAINDOCB(transfer, trans_ac, transfer, L"state"); |
428 | } |
429 | |
430 | void transfersetnick(struct transfer *transfer, wchar_t *newnick) |
431 | { |
432 | if(transfer->peernick != NULL) |
433 | free(transfer->peernick); |
434 | transfer->peernick = swcsdup(newnick); |
435 | CBCHAINDOCB(transfer, trans_ac, transfer, L"nick"); |
436 | } |
437 | |
438 | void transfersetsize(struct transfer *transfer, int newsize) |
439 | { |
440 | transfer->size = newsize; |
441 | CBCHAINDOCB(transfer, trans_ac, transfer, L"size"); |
442 | } |
443 | |
444 | void transferseterror(struct transfer *transfer, int error) |
445 | { |
446 | transfer->error = error; |
447 | CBCHAINDOCB(transfer, trans_ac, transfer, L"error"); |
448 | } |
449 | |
450 | void transfersetpath(struct transfer *transfer, wchar_t *path) |
451 | { |
452 | if(transfer->path != NULL) |
453 | free(transfer->path); |
454 | transfer->path = swcsdup(path); |
455 | CBCHAINDOCB(transfer, trans_ac, transfer, L"path"); |
456 | } |
457 | |
2c086721 |
458 | void transfersethash(struct transfer *transfer, struct hash *hash) |
459 | { |
460 | if(transfer->hash != NULL) |
461 | freehash(transfer->hash); |
462 | transfer->hash = hash; |
463 | CBCHAINDOCB(transfer, trans_ac, transfer, L"hash"); |
464 | } |
465 | |
d3372da9 |
466 | int slotsleft(void) |
467 | { |
468 | struct transfer *transfer; |
469 | int slots; |
470 | |
471 | slots = confgetint("transfer", "slots"); |
472 | for(transfer = transfers; (transfer != NULL) && (slots > 0); transfer = transfer->next) |
473 | { |
474 | if((transfer->dir == TRNSD_UP) && (transfer->state == TRNS_MAIN) && !transfer->flags.b.minislot) |
475 | slots--; |
476 | } |
477 | return(slots); |
478 | } |
479 | |
480 | static void killfilter(struct transfer *transfer) |
481 | { |
482 | if(transfer->filter != -1) |
483 | { |
484 | kill(-transfer->filter, SIGHUP); |
485 | transfer->filter = -1; |
486 | } |
487 | if(transfer->localend) |
488 | { |
489 | transfer->localend->readcb = NULL; |
490 | transfer->localend->writecb = NULL; |
491 | transfer->localend->errcb = NULL; |
492 | putsock(transfer->localend); |
493 | transfer->localend = NULL; |
494 | } |
495 | if(transfer->filterout) |
496 | { |
497 | transfer->filterout->readcb = NULL; |
498 | putsock(transfer->filterout); |
499 | transfer->filterout = NULL; |
500 | } |
501 | if(transfer->filterbuf) |
502 | { |
503 | free(transfer->filterbuf); |
504 | transfer->filterbuf = NULL; |
505 | } |
506 | transfer->filterbufsize = transfer->filterbufdata = 0; |
507 | } |
508 | |
509 | static char *findfilter(struct passwd *pwd) |
510 | { |
511 | char *path, *filtername; |
512 | |
513 | if((path = sprintf2("%s/.dcdl-filter", pwd->pw_dir)) != NULL) |
514 | { |
515 | if(!access(path, X_OK)) |
516 | return(path); |
517 | free(path); |
518 | } |
519 | if((filtername = icwcstombs(confgetstr("transfer", "filter"), NULL)) == NULL) |
520 | { |
521 | flog(LOG_WARNING, "could not convert filter name into local charset: %s", strerror(errno)); |
522 | } else { |
523 | if(strchr(filtername, '/') == NULL) |
524 | { |
525 | if((path = sprintf2("/etc/%s", filtername)) != NULL) |
526 | { |
527 | if(!access(path, X_OK)) |
528 | { |
529 | free(filtername); |
530 | return(path); |
531 | } |
532 | free(path); |
533 | } |
534 | if((path = sprintf2("/usr/etc/%s", filtername)) != NULL) |
535 | { |
536 | if(!access(path, X_OK)) |
537 | { |
538 | free(filtername); |
539 | return(path); |
540 | } |
541 | free(path); |
542 | } |
543 | if((path = sprintf2("/usr/local/etc/%s", filtername)) != NULL) |
544 | { |
545 | if(!access(path, X_OK)) |
546 | { |
547 | free(filtername); |
548 | return(path); |
549 | } |
550 | free(path); |
551 | } |
552 | } else { |
553 | if(!access(filtername, X_OK)) |
554 | return(filtername); |
555 | } |
556 | free(filtername); |
557 | } |
558 | return(NULL); |
559 | } |
560 | |
561 | static void filterread(struct socket *sk, struct transfer *transfer) |
562 | { |
563 | char *buf, *p, *p2; |
564 | size_t bufsize; |
565 | wchar_t *cmd, *arg; |
566 | |
567 | if((buf = sockgetinbuf(sk, &bufsize)) == NULL) |
568 | return; |
569 | bufcat(transfer->filterbuf, buf, bufsize); |
570 | free(buf); |
571 | if((p = memchr(transfer->filterbuf, '\n', transfer->filterbufdata)) != NULL) |
572 | { |
573 | *(p++) = 0; |
574 | if((p2 = strchr(transfer->filterbuf, ' ')) != NULL) |
575 | *(p2++) = 0; |
576 | if((cmd = icmbstowcs(transfer->filterbuf, NULL)) != NULL) |
577 | { |
578 | arg = NULL; |
579 | if(p2 != NULL) |
580 | { |
581 | if((arg = icmbstowcs(p2, NULL)) == NULL) |
582 | flog(LOG_WARNING, "filter sent a string which could not be converted into the local charset: %s: %s", transfer->filterbuf, strerror(errno)); |
583 | } |
584 | CBCHAINDOCB(transfer, trans_filterout, transfer, cmd, arg); |
585 | if(arg != NULL) |
586 | free(arg); |
587 | free(cmd); |
588 | } else { |
589 | flog(LOG_WARNING, "filter sent a string which could not be converted into the local charset: %s: %s", transfer->filterbuf, strerror(errno)); |
590 | } |
591 | memmove(transfer->filterbuf, p, transfer->filterbufdata -= (p - transfer->filterbuf)); |
592 | } |
593 | } |
594 | |
595 | static void filterexit(pid_t pid, int status, void *data) |
596 | { |
597 | struct transfer *transfer; |
598 | |
599 | for(transfer = transfers; transfer != NULL; transfer = transfer->next) |
600 | { |
601 | if(transfer->filter == pid) |
602 | { |
603 | transfer->filter = -1; |
604 | killfilter(transfer); |
605 | if(WEXITSTATUS(status)) |
606 | { |
607 | resettransfer(transfer); |
608 | } else { |
609 | freetransfer(transfer); |
610 | } |
611 | break; |
612 | } |
613 | } |
614 | } |
615 | |
616 | int forkfilter(struct transfer *transfer) |
617 | { |
618 | char *filtername, *filename, *peerid, *buf; |
619 | wchar_t *wfilename; |
620 | struct passwd *pwent; |
621 | pid_t pid; |
622 | int inpipe, outpipe; |
623 | char **argv; |
624 | size_t argvsize, argvdata; |
625 | struct socket *insock, *outsock; |
626 | struct transarg *ta; |
627 | char *rec, *val; |
628 | |
629 | wfilename = transfer->path; |
630 | if(transfer->fnet->filebasename != NULL) |
631 | wfilename = transfer->fnet->filebasename(wfilename); |
632 | if(transfer->auth == NULL) |
633 | { |
634 | flog(LOG_WARNING, "tried to fork filter for transfer with NULL authhandle (tranfer %i)", transfer->id); |
635 | errno = EACCES; |
636 | return(-1); |
637 | } |
638 | if((pwent = getpwuid(transfer->owner)) == NULL) |
639 | { |
640 | flog(LOG_WARNING, "no passwd entry for uid %i (found in transfer %i)", transfer->owner, transfer->id); |
641 | errno = EACCES; |
642 | return(-1); |
643 | } |
644 | if((filtername = findfilter(pwent)) == NULL) |
645 | { |
646 | flog(LOG_WARNING, "could not find filter for user %s", pwent->pw_name); |
647 | errno = ENOENT; |
648 | return(-1); |
649 | } |
650 | if((filename = icwcstombs(wfilename, NULL)) == NULL) |
651 | { |
652 | if((buf = icwcstombs(wfilename, "UTF-8")) == NULL) |
653 | { |
654 | flog(LOG_WARNING, "could convert transfer filename to neither local charset nor UTF-8: %s", strerror(errno)); |
655 | return(-1); |
656 | } |
657 | filename = sprintf2("utf8-%s", buf); |
658 | free(buf); |
659 | } |
660 | if((peerid = icwcstombs(transfer->peerid, NULL)) == NULL) |
661 | { |
662 | if((buf = icwcstombs(transfer->peerid, "UTF-8")) == NULL) |
663 | { |
664 | flog(LOG_WARNING, "could convert transfer peerid to neither local charset nor UTF-8: %s", strerror(errno)); |
665 | free(filename); |
666 | return(-1); |
667 | } |
668 | peerid = sprintf2("utf8-%s", buf); |
669 | free(buf); |
670 | } |
671 | if((pid = forksess(transfer->owner, transfer->auth, filterexit, NULL, FD_PIPE, 0, O_WRONLY, &inpipe, FD_PIPE, 1, O_RDONLY, &outpipe, FD_FILE, 2, O_RDWR, "/dev/null", FD_END)) < 0) |
672 | { |
673 | flog(LOG_WARNING, "could not fork session for filter for transfer %i: %s", transfer->id, strerror(errno)); |
674 | return(-1); |
675 | } |
676 | if(pid == 0) |
677 | { |
678 | argv = NULL; |
679 | argvsize = argvdata = 0; |
680 | buf = sprintf2("%i", transfer->size); |
681 | addtobuf(argv, filtername); |
682 | addtobuf(argv, filename); |
683 | addtobuf(argv, buf); |
684 | addtobuf(argv, peerid); |
082b0419 |
685 | if(transfer->hash) |
686 | { |
687 | if((buf = icwcstombs(unparsehash(transfer->hash), NULL)) != NULL) |
688 | { |
689 | /* XXX: I am very doubtful of this, but it can just as |
690 | * well be argued that all data should be presented as |
691 | * key-value pairs. */ |
692 | addtobuf(argv, "hash"); |
693 | addtobuf(argv, buf); |
694 | } else { |
695 | flog(LOG_WARNING, "could not convert hash to local charset"); |
696 | } |
697 | } |
d3372da9 |
698 | for(ta = transfer->args; ta != NULL; ta = ta->next) |
699 | { |
700 | if((rec = icwcstombs(ta->rec, NULL)) == NULL) |
701 | continue; |
702 | if((val = icwcstombs(ta->val, NULL)) == NULL) |
703 | continue; |
704 | addtobuf(argv, rec); |
705 | addtobuf(argv, val); |
706 | } |
707 | addtobuf(argv, NULL); |
708 | execv(filtername, argv); |
709 | flog(LOG_WARNING, "could not exec filter %s: %s", filtername, strerror(errno)); |
710 | exit(127); |
711 | } |
712 | insock = wrapsock(inpipe); |
713 | outsock = wrapsock(outpipe); |
714 | /* Really, really strange thing here - sometimes the kernel would |
715 | * return POLLIN on insock, even though it's a write-side |
716 | * pipe. The corresponding read on the pipe naturally returns |
717 | * EBADF, causing doldacond to think there's something wrong with |
718 | * the fd, and thus it closes it. Until I can find out whyever the |
719 | * kernel gives a POLLIN on the fd (if I can at all...), I'll just |
720 | * set ignread on insock for now. */ |
721 | insock->ignread = 1; |
722 | transfer->filter = pid; |
723 | transfersetlocalend(transfer, insock); |
724 | getsock(transfer->filterout = outsock); |
725 | outsock->data = transfer; |
726 | outsock->readcb = (void (*)(struct socket *, void *))filterread; |
727 | putsock(insock); |
728 | putsock(outsock); |
729 | free(filtername); |
730 | free(filename); |
731 | free(peerid); |
732 | return(0); |
733 | } |
734 | |
735 | static int run(void) |
736 | { |
737 | struct transfer *transfer, *next; |
738 | |
739 | for(transfer = transfers; transfer != NULL; transfer = transfer->next) |
740 | { |
741 | if((transfer->endpos >= 0) && (transfer->state == TRNS_MAIN) && (transfer->localend != NULL) && (transfer->localend->state == SOCK_EST) && (transfer->curpos >= transfer->endpos)) |
742 | { |
743 | if((transfer->iface != NULL) && (transfer->iface->endofdata != NULL)) |
744 | transfer->iface->endofdata(transfer, transfer->ifacedata); |
745 | closesock(transfer->localend); |
746 | } |
747 | } |
748 | for(transfer = transfers; transfer != NULL; transfer = next) |
749 | { |
750 | next = transfer->next; |
751 | if(transfer->close) |
752 | { |
753 | transferdetach(transfer); |
754 | freetransfer(transfer); |
755 | continue; |
756 | } |
757 | } |
758 | return(0); |
759 | } |
760 | |
761 | static struct configvar myvars[] = |
762 | { |
763 | {CONF_VAR_INT, "slots", {.num = 3}}, |
764 | {CONF_VAR_INT, "ultos", {.num = SOCK_TOS_MAXTP}}, |
765 | {CONF_VAR_INT, "dltos", {.num = SOCK_TOS_MAXTP}}, |
766 | {CONF_VAR_STRING, "filter", {.str = L"dc-filter"}}, |
767 | {CONF_VAR_END} |
768 | }; |
769 | |
770 | static struct module me = |
771 | { |
772 | .conf = |
773 | { |
774 | .vars = myvars |
775 | }, |
776 | .name = "transfer", |
777 | .run = run |
778 | }; |
779 | |
780 | MODULE(me); |