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[doldaconnect.git] / daemon / transfer.c
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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
41static void killfilter(struct transfer *transfer);
42
43struct transfer *transfers = NULL;
44int numtransfers = 0;
45GCBCHAIN(newtransfercb, struct transfer *);
46
47void freetransfer(struct transfer *transfer)
48{
d3372da9 49 if(transfer == transfers)
50 transfers = transfer->next;
51 if(transfer->next != NULL)
52 transfer->next->prev = transfer->prev;
53 if(transfer->prev != NULL)
54 transfer->prev->next = transfer->next;
55 CBCHAINDOCB(transfer, trans_destroy, transfer);
56 CBCHAINFREE(transfer, trans_ac);
57 CBCHAINFREE(transfer, trans_act);
58 CBCHAINFREE(transfer, trans_p);
59 CBCHAINFREE(transfer, trans_destroy);
60 CBCHAINFREE(transfer, trans_filterout);
9ec790e8 61 while(transfer->args != NULL)
62 freewcspair(transfer->args, &transfer->args);
d3372da9 63 if(transfer->filter != -1)
64 killfilter(transfer);
65 if(transfer->etimer != NULL)
66 canceltimer(transfer->etimer);
67 if(transfer->auth != NULL)
68 authputhandle(transfer->auth);
69 if(transfer->peerid != NULL)
70 free(transfer->peerid);
71 if(transfer->peernick != NULL)
72 free(transfer->peernick);
73 if(transfer->path != NULL)
74 free(transfer->path);
75 if(transfer->actdesc != NULL)
76 free(transfer->actdesc);
77 if(transfer->filterbuf != NULL)
78 free(transfer->filterbuf);
429d35e5 79 if(transfer->hash != NULL)
80 freehash(transfer->hash);
d3372da9 81 if(transfer->localend != NULL)
82 {
83 transfer->localend->readcb = NULL;
84 transfer->localend->writecb = NULL;
85 transfer->localend->errcb = NULL;
86 putsock(transfer->localend);
87 }
88 if(transfer->filterout != NULL)
89 {
90 transfer->filterout->readcb = NULL;
91 transfer->filterout->writecb = NULL;
92 transfer->filterout->errcb = NULL;
93 putsock(transfer->filterout);
94 }
95 if(transfer->fn != NULL)
96 putfnetnode(transfer->fn);
97 free(transfer);
98 numtransfers--;
99}
100
101struct transfer *newtransfer(void)
102{
103 struct transfer *new;
104 static int curid = 0;
105
106 new = smalloc(sizeof(*new));
107 memset(new, 0, sizeof(*new));
108 new->id = curid++;
109 new->size = -1;
110 new->endpos = -1;
111 new->filter = -1;
112 CBCHAININIT(new, trans_ac);
113 CBCHAININIT(new, trans_act);
114 CBCHAININIT(new, trans_p);
115 CBCHAININIT(new, trans_destroy);
116 CBCHAININIT(new, trans_filterout);
117 new->next = NULL;
118 new->prev = NULL;
119 time(&new->activity);
120 numtransfers++;
121 return(new);
122}
123
d3372da9 124void transferattach(struct transfer *transfer, struct transferiface *iface, void *data)
125{
126 if(transfer->iface != NULL)
127 transferdetach(transfer);
128 transfer->iface = iface;
129 transfer->ifacedata = data;
130}
131
132void transferdetach(struct transfer *transfer)
133{
134 if(transfer->iface != NULL)
135 {
136 transfer->iface->detach(transfer, transfer->ifacedata);
137 transfer->iface = NULL;
138 transfer->ifacedata = NULL;
139 }
140}
141
2c086721 142struct transfer *finddownload(wchar_t *peerid)
143{
144 struct transfer *transfer;
145
146 for(transfer = transfers; transfer != NULL; transfer = transfer->next)
147 {
148 if((transfer->dir == TRNSD_DOWN) && (transfer->iface == NULL) && !wcscmp(peerid, transfer->peerid))
149 break;
150 }
151 return(transfer);
152}
153
d3372da9 154struct transfer *newupload(struct fnetnode *fn, struct fnet *fnet, wchar_t *nickid, struct transferiface *iface, void *data)
155{
156 struct transfer *transfer;
157
158 transfer = newtransfer();
159 if(fnet != NULL)
160 transfer->fnet = fnet;
161 else
162 transfer->fnet = fn->fnet;
163 transfer->peerid = swcsdup(nickid);
164 transfer->state = TRNS_HS;
165 transfer->dir = TRNSD_UP;
166 if(fn != NULL)
167 getfnetnode(transfer->fn = fn);
168 transferattach(transfer, iface, data);
169 linktransfer(transfer);
170 bumptransfer(transfer);
171 return(transfer);
172}
173
174void linktransfer(struct transfer *transfer)
175{
176 transfer->next = transfers;
177 transfer->prev = NULL;
178 if(transfers != NULL)
179 transfers->prev = transfer;
180 transfers = transfer;
181 GCBCHAINDOCB(newtransfercb, transfer);
182}
183
184void resettransfer(struct transfer *transfer)
185{
186 if(transfer->dir == TRNSD_DOWN)
187 {
188 if(transfer->iface != NULL)
189 transferdetach(transfer);
190 killfilter(transfer);
191 transfersetstate(transfer, TRNS_WAITING);
192 transfersetactivity(transfer, L"reset");
193 return;
194 }
195}
196
197struct transfer *findtransfer(int id)
198{
199 struct transfer *transfer;
200
201 for(transfer = transfers; transfer != NULL; transfer = transfer->next)
202 {
203 if(transfer->id == id)
204 break;
205 }
206 return(transfer);
207}
208
209static void transexpire(int cancelled, struct transfer *transfer)
210{
211 transfer->etimer = NULL;
212 if(!cancelled)
213 bumptransfer(transfer);
214 else
215 transfer->timeout = 0;
216}
217
218static void transferread(struct socket *sk, struct transfer *transfer)
219{
220 if(sockgetdatalen(sk) >= 65536)
221 sk->ignread = 1;
222 if((transfer->iface != NULL) && (transfer->iface->gotdata != NULL))
223 transfer->iface->gotdata(transfer, transfer->ifacedata);
224}
225
226static void transferwrite(struct socket *sk, struct transfer *transfer)
227{
228 if((transfer->iface != NULL) && (transfer->iface->wantdata != NULL))
229 transfer->iface->wantdata(transfer, transfer->ifacedata);
230}
231
232static void transfererr(struct socket *sk, int errno, struct transfer *transfer)
233{
234 if((transfer->iface != NULL) && (transfer->iface->endofdata != NULL))
235 transfer->iface->endofdata(transfer, transfer->ifacedata);
236}
237
238void transferputdata(struct transfer *transfer, void *buf, size_t size)
239{
240 time(&transfer->activity);
241 sockqueue(transfer->localend, buf, size);
242 transfer->curpos += size;
243 CBCHAINDOCB(transfer, trans_p, transfer);
244}
245
246void transferendofdata(struct transfer *transfer)
247{
248 if(transfer->curpos >= transfer->size)
249 {
250 transfersetstate(transfer, TRNS_DONE);
251 transfer->localend->readcb = NULL;
252 transfer->localend->writecb = NULL;
253 transfer->localend->errcb = NULL;
254 putsock(transfer->localend);
255 transfer->localend = NULL;
256 } else {
257 resettransfer(transfer);
258 }
259}
260
261size_t transferdatasize(struct transfer *transfer)
262{
263 return(sockqueuesize(transfer->localend));
264}
265
266void *transfergetdata(struct transfer *transfer, size_t *size)
267{
268 void *buf;
269
270 if(transfer->localend == NULL)
271 return(NULL);
272 transfer->localend->ignread = 0;
273 time(&transfer->activity);
274 if((buf = sockgetinbuf(transfer->localend, size)) == NULL)
275 return(NULL);
276 if((transfer->endpos >= 0) && (transfer->curpos + *size >= transfer->endpos))
277 {
278 *size = transfer->endpos - transfer->curpos;
279 buf = srealloc(buf, *size);
280 }
281 transfer->curpos += *size;
282 CBCHAINDOCB(transfer, trans_p, transfer);
283 return(buf);
284}
285
286void transferprepul(struct transfer *transfer, size_t size, size_t start, size_t end, struct socket *lesk)
287{
288 transfersetsize(transfer, size);
289 transfer->curpos = start;
290 transfer->endpos = end;
291 lesk->ignread = 1;
292 transfersetlocalend(transfer, lesk);
293}
294
2c086721 295void transferstartdl(struct transfer *transfer, struct socket *sk)
296{
297 transfersetstate(transfer, TRNS_MAIN);
298 socksettos(sk, confgetint("transfer", "dltos"));
299}
300
d3372da9 301void transferstartul(struct transfer *transfer, struct socket *sk)
302{
303 transfersetstate(transfer, TRNS_MAIN);
304 socksettos(sk, confgetint("transfer", "ultos"));
305 if(transfer->localend != NULL)
306 transfer->localend->ignread = 0;
307}
308
309void transfersetlocalend(struct transfer *transfer, struct socket *sk)
310{
311 if(transfer->localend != NULL)
312 putsock(transfer->localend);
313 getsock(transfer->localend = sk);
314 sk->data = transfer;
315 sk->readcb = (void (*)(struct socket *, void *))transferread;
316 sk->writecb = (void (*)(struct socket *, void *))transferwrite;
317 sk->errcb = (void (*)(struct socket *, int, void *))transfererr;
318}
319
18f56d13 320static int tryreq(struct transfer *transfer)
d3372da9 321{
322 struct fnetnode *fn;
323 struct fnetpeer *peer;
18f56d13 324
325 if((fn = transfer->fn) != NULL)
326 {
327 if(fn->state != FNN_EST)
328 {
329 transfer->close = 1;
330 return(1);
331 }
332 peer = fnetfindpeer(fn, transfer->peerid);
333 } else {
334 peer = NULL;
335 for(fn = fnetnodes; fn != NULL; fn = fn->next)
336 {
337 if((fn->state == FNN_EST) && (fn->fnet == transfer->fnet) && ((peer = fnetfindpeer(fn, transfer->peerid)) != NULL))
338 break;
339 }
340 }
341 if(peer != NULL)
6329b4ba 342 {
343 time(&transfer->lastreq);
18f56d13 344 return(fn->fnet->reqconn(peer));
6329b4ba 345 }
18f56d13 346 return(1);
347}
348
349void trytransferbypeer(struct fnet *fnet, wchar_t *peerid)
350{
351 struct transfer *transfer;
352
353 for(transfer = transfers; transfer != NULL; transfer = transfer->next)
354 {
355 if((transfer->dir == TRNSD_DOWN) && (transfer->state == TRNS_WAITING))
356 {
357 if((transfer->fnet == fnet) && !wcscmp(transfer->peerid, peerid))
358 {
359 if(!tryreq(transfer))
360 return;
361 }
362 }
363 }
364}
365
366void bumptransfer(struct transfer *transfer)
367{
d3372da9 368 time_t now;
369
370 if((now = time(NULL)) < transfer->timeout)
371 {
18f56d13 372
d3372da9 373 if(transfer->etimer == NULL)
374 transfer->etimer = timercallback(transfer->timeout, (void (*)(int, void *))transexpire, transfer);
375 return;
376 }
377 if(transfer->etimer != NULL)
378 canceltimer(transfer->etimer);
379 switch(transfer->state)
380 {
381 case TRNS_WAITING:
d3372da9 382 transfer->etimer = timercallback(transfer->timeout = (time(NULL) + 30), (void (*)(int, void *))transexpire, transfer);
383 if(now - transfer->lastreq > 30)
18f56d13 384 tryreq(transfer);
d3372da9 385 break;
386 case TRNS_HS:
387 if(transfer->dir == TRNSD_UP)
388 {
389 if(now - transfer->activity < 60)
390 transfer->etimer = timercallback(transfer->timeout = (time(NULL) + 60), (void (*)(int, void *))transexpire, transfer);
391 else
392 transfer->close = 1;
393 } else if(transfer->dir == TRNSD_DOWN) {
394 if(now - transfer->activity < 60)
395 transfer->etimer = timercallback(transfer->timeout = (time(NULL) + 60), (void (*)(int, void *))transexpire, transfer);
396 else
397 resettransfer(transfer);
398 }
399 break;
400 case TRNS_MAIN:
401 if(transfer->dir == TRNSD_UP)
402 {
403 if(now - transfer->activity < 300)
404 transfer->etimer = timercallback(transfer->timeout = (time(NULL) + 300), (void (*)(int, void *))transexpire, transfer);
405 else
406 transfer->close = 1;
407 }
408 break;
409 }
410}
411
412void transfersetactivity(struct transfer *transfer, wchar_t *desc)
413{
414 time(&transfer->activity);
415 if(desc != NULL)
416 {
417 if(transfer->actdesc != NULL)
418 free(transfer->actdesc);
419 transfer->actdesc = swcsdup(desc);
420 }
421 bumptransfer(transfer);
422 CBCHAINDOCB(transfer, trans_act, transfer);
423}
424
425void transfersetstate(struct transfer *transfer, int newstate)
426{
427 transfer->state = newstate;
428 if(transfer->etimer != NULL)
429 canceltimer(transfer->etimer);
430 transfersetactivity(transfer, NULL);
431 CBCHAINDOCB(transfer, trans_ac, transfer, L"state");
432}
433
434void transfersetnick(struct transfer *transfer, wchar_t *newnick)
435{
436 if(transfer->peernick != NULL)
437 free(transfer->peernick);
438 transfer->peernick = swcsdup(newnick);
439 CBCHAINDOCB(transfer, trans_ac, transfer, L"nick");
440}
441
442void transfersetsize(struct transfer *transfer, int newsize)
443{
444 transfer->size = newsize;
445 CBCHAINDOCB(transfer, trans_ac, transfer, L"size");
446}
447
448void transferseterror(struct transfer *transfer, int error)
449{
450 transfer->error = error;
451 CBCHAINDOCB(transfer, trans_ac, transfer, L"error");
452}
453
454void transfersetpath(struct transfer *transfer, wchar_t *path)
455{
456 if(transfer->path != NULL)
457 free(transfer->path);
458 transfer->path = swcsdup(path);
459 CBCHAINDOCB(transfer, trans_ac, transfer, L"path");
460}
461
2c086721 462void transfersethash(struct transfer *transfer, struct hash *hash)
463{
464 if(transfer->hash != NULL)
465 freehash(transfer->hash);
466 transfer->hash = hash;
467 CBCHAINDOCB(transfer, trans_ac, transfer, L"hash");
468}
469
d3372da9 470int slotsleft(void)
471{
472 struct transfer *transfer;
473 int slots;
474
475 slots = confgetint("transfer", "slots");
476 for(transfer = transfers; (transfer != NULL) && (slots > 0); transfer = transfer->next)
477 {
478 if((transfer->dir == TRNSD_UP) && (transfer->state == TRNS_MAIN) && !transfer->flags.b.minislot)
479 slots--;
480 }
481 return(slots);
482}
483
484static void killfilter(struct transfer *transfer)
485{
486 if(transfer->filter != -1)
487 {
488 kill(-transfer->filter, SIGHUP);
489 transfer->filter = -1;
490 }
491 if(transfer->localend)
492 {
493 transfer->localend->readcb = NULL;
494 transfer->localend->writecb = NULL;
495 transfer->localend->errcb = NULL;
496 putsock(transfer->localend);
497 transfer->localend = NULL;
498 }
499 if(transfer->filterout)
500 {
501 transfer->filterout->readcb = NULL;
502 putsock(transfer->filterout);
503 transfer->filterout = NULL;
504 }
505 if(transfer->filterbuf)
506 {
507 free(transfer->filterbuf);
508 transfer->filterbuf = NULL;
509 }
510 transfer->filterbufsize = transfer->filterbufdata = 0;
511}
512
513static char *findfilter(struct passwd *pwd)
514{
515 char *path, *filtername;
516
517 if((path = sprintf2("%s/.dcdl-filter", pwd->pw_dir)) != NULL)
518 {
519 if(!access(path, X_OK))
520 return(path);
521 free(path);
522 }
523 if((filtername = icwcstombs(confgetstr("transfer", "filter"), NULL)) == NULL)
524 {
525 flog(LOG_WARNING, "could not convert filter name into local charset: %s", strerror(errno));
526 } else {
527 if(strchr(filtername, '/') == NULL)
528 {
529 if((path = sprintf2("/etc/%s", filtername)) != NULL)
530 {
531 if(!access(path, X_OK))
532 {
533 free(filtername);
534 return(path);
535 }
536 free(path);
537 }
538 if((path = sprintf2("/usr/etc/%s", filtername)) != NULL)
539 {
540 if(!access(path, X_OK))
541 {
542 free(filtername);
543 return(path);
544 }
545 free(path);
546 }
547 if((path = sprintf2("/usr/local/etc/%s", filtername)) != NULL)
548 {
549 if(!access(path, X_OK))
550 {
551 free(filtername);
552 return(path);
553 }
554 free(path);
555 }
556 } else {
557 if(!access(filtername, X_OK))
558 return(filtername);
559 }
560 free(filtername);
561 }
562 return(NULL);
563}
564
565static void filterread(struct socket *sk, struct transfer *transfer)
566{
567 char *buf, *p, *p2;
568 size_t bufsize;
569 wchar_t *cmd, *arg;
570
571 if((buf = sockgetinbuf(sk, &bufsize)) == NULL)
572 return;
573 bufcat(transfer->filterbuf, buf, bufsize);
574 free(buf);
575 if((p = memchr(transfer->filterbuf, '\n', transfer->filterbufdata)) != NULL)
576 {
577 *(p++) = 0;
578 if((p2 = strchr(transfer->filterbuf, ' ')) != NULL)
579 *(p2++) = 0;
580 if((cmd = icmbstowcs(transfer->filterbuf, NULL)) != NULL)
581 {
582 arg = NULL;
583 if(p2 != NULL)
584 {
585 if((arg = icmbstowcs(p2, NULL)) == NULL)
586 flog(LOG_WARNING, "filter sent a string which could not be converted into the local charset: %s: %s", transfer->filterbuf, strerror(errno));
587 }
588 CBCHAINDOCB(transfer, trans_filterout, transfer, cmd, arg);
589 if(arg != NULL)
590 free(arg);
591 free(cmd);
592 } else {
593 flog(LOG_WARNING, "filter sent a string which could not be converted into the local charset: %s: %s", transfer->filterbuf, strerror(errno));
594 }
595 memmove(transfer->filterbuf, p, transfer->filterbufdata -= (p - transfer->filterbuf));
596 }
597}
598
599static void filterexit(pid_t pid, int status, void *data)
600{
601 struct transfer *transfer;
602
603 for(transfer = transfers; transfer != NULL; transfer = transfer->next)
604 {
605 if(transfer->filter == pid)
606 {
607 transfer->filter = -1;
608 killfilter(transfer);
609 if(WEXITSTATUS(status))
610 {
611 resettransfer(transfer);
612 } else {
613 freetransfer(transfer);
614 }
a751b0d3 615 trytransferbypeer(transfer->fnet, transfer->peerid);
d3372da9 616 break;
617 }
618 }
619}
620
621int forkfilter(struct transfer *transfer)
622{
623 char *filtername, *filename, *peerid, *buf;
624 wchar_t *wfilename;
625 struct passwd *pwent;
626 pid_t pid;
627 int inpipe, outpipe;
628 char **argv;
629 size_t argvsize, argvdata;
630 struct socket *insock, *outsock;
9ec790e8 631 struct wcspair *ta;
d3372da9 632 char *rec, *val;
633
634 wfilename = transfer->path;
635 if(transfer->fnet->filebasename != NULL)
636 wfilename = transfer->fnet->filebasename(wfilename);
637 if(transfer->auth == NULL)
638 {
639 flog(LOG_WARNING, "tried to fork filter for transfer with NULL authhandle (tranfer %i)", transfer->id);
640 errno = EACCES;
641 return(-1);
642 }
643 if((pwent = getpwuid(transfer->owner)) == NULL)
644 {
645 flog(LOG_WARNING, "no passwd entry for uid %i (found in transfer %i)", transfer->owner, transfer->id);
646 errno = EACCES;
647 return(-1);
648 }
649 if((filtername = findfilter(pwent)) == NULL)
650 {
651 flog(LOG_WARNING, "could not find filter for user %s", pwent->pw_name);
652 errno = ENOENT;
653 return(-1);
654 }
655 if((filename = icwcstombs(wfilename, NULL)) == NULL)
656 {
657 if((buf = icwcstombs(wfilename, "UTF-8")) == NULL)
658 {
659 flog(LOG_WARNING, "could convert transfer filename to neither local charset nor UTF-8: %s", strerror(errno));
660 return(-1);
661 }
662 filename = sprintf2("utf8-%s", buf);
663 free(buf);
664 }
665 if((peerid = icwcstombs(transfer->peerid, NULL)) == NULL)
666 {
667 if((buf = icwcstombs(transfer->peerid, "UTF-8")) == NULL)
668 {
669 flog(LOG_WARNING, "could convert transfer peerid to neither local charset nor UTF-8: %s", strerror(errno));
670 free(filename);
671 return(-1);
672 }
673 peerid = sprintf2("utf8-%s", buf);
674 free(buf);
675 }
676 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)
677 {
678 flog(LOG_WARNING, "could not fork session for filter for transfer %i: %s", transfer->id, strerror(errno));
679 return(-1);
680 }
681 if(pid == 0)
682 {
683 argv = NULL;
684 argvsize = argvdata = 0;
685 buf = sprintf2("%i", transfer->size);
686 addtobuf(argv, filtername);
687 addtobuf(argv, filename);
688 addtobuf(argv, buf);
689 addtobuf(argv, peerid);
082b0419 690 if(transfer->hash)
691 {
692 if((buf = icwcstombs(unparsehash(transfer->hash), NULL)) != NULL)
693 {
694 /* XXX: I am very doubtful of this, but it can just as
695 * well be argued that all data should be presented as
696 * key-value pairs. */
697 addtobuf(argv, "hash");
698 addtobuf(argv, buf);
699 } else {
700 flog(LOG_WARNING, "could not convert hash to local charset");
701 }
702 }
d3372da9 703 for(ta = transfer->args; ta != NULL; ta = ta->next)
704 {
9ec790e8 705 if((rec = icwcstombs(ta->key, NULL)) == NULL)
d3372da9 706 continue;
707 if((val = icwcstombs(ta->val, NULL)) == NULL)
708 continue;
709 addtobuf(argv, rec);
710 addtobuf(argv, val);
711 }
712 addtobuf(argv, NULL);
713 execv(filtername, argv);
714 flog(LOG_WARNING, "could not exec filter %s: %s", filtername, strerror(errno));
715 exit(127);
716 }
717 insock = wrapsock(inpipe);
718 outsock = wrapsock(outpipe);
719 /* Really, really strange thing here - sometimes the kernel would
720 * return POLLIN on insock, even though it's a write-side
721 * pipe. The corresponding read on the pipe naturally returns
722 * EBADF, causing doldacond to think there's something wrong with
723 * the fd, and thus it closes it. Until I can find out whyever the
724 * kernel gives a POLLIN on the fd (if I can at all...), I'll just
725 * set ignread on insock for now. */
726 insock->ignread = 1;
727 transfer->filter = pid;
728 transfersetlocalend(transfer, insock);
729 getsock(transfer->filterout = outsock);
730 outsock->data = transfer;
731 outsock->readcb = (void (*)(struct socket *, void *))filterread;
732 putsock(insock);
733 putsock(outsock);
734 free(filtername);
735 free(filename);
736 free(peerid);
737 return(0);
738}
739
740static int run(void)
741{
742 struct transfer *transfer, *next;
743
744 for(transfer = transfers; transfer != NULL; transfer = transfer->next)
745 {
746 if((transfer->endpos >= 0) && (transfer->state == TRNS_MAIN) && (transfer->localend != NULL) && (transfer->localend->state == SOCK_EST) && (transfer->curpos >= transfer->endpos))
747 {
748 if((transfer->iface != NULL) && (transfer->iface->endofdata != NULL))
749 transfer->iface->endofdata(transfer, transfer->ifacedata);
750 closesock(transfer->localend);
751 }
752 }
753 for(transfer = transfers; transfer != NULL; transfer = next)
754 {
755 next = transfer->next;
756 if(transfer->close)
757 {
758 transferdetach(transfer);
759 freetransfer(transfer);
760 continue;
761 }
762 }
763 return(0);
764}
765
766static struct configvar myvars[] =
767{
768 {CONF_VAR_INT, "slots", {.num = 3}},
769 {CONF_VAR_INT, "ultos", {.num = SOCK_TOS_MAXTP}},
770 {CONF_VAR_INT, "dltos", {.num = SOCK_TOS_MAXTP}},
771 {CONF_VAR_STRING, "filter", {.str = L"dc-filter"}},
772 {CONF_VAR_END}
773};
774
775static struct module me =
776{
777 .conf =
778 {
779 .vars = myvars
780 },
781 .name = "transfer",
782 .run = run
783};
784
785MODULE(me);
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