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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
7a5e9d41 43unsigned long long bytesupload = 0;
44unsigned long long bytesdownload = 0;
d3372da9 45struct transfer *transfers = NULL;
46int numtransfers = 0;
47GCBCHAIN(newtransfercb, struct transfer *);
48
49void freetransfer(struct transfer *transfer)
50{
d3372da9 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);
9ec790e8 63 while(transfer->args != NULL)
64 freewcspair(transfer->args, &transfer->args);
d3372da9 65 if(transfer->filter != -1)
66 killfilter(transfer);
67 if(transfer->etimer != NULL)
68 canceltimer(transfer->etimer);
69 if(transfer->auth != NULL)
70 authputhandle(transfer->auth);
71 if(transfer->peerid != NULL)
72 free(transfer->peerid);
73 if(transfer->peernick != NULL)
74 free(transfer->peernick);
75 if(transfer->path != NULL)
76 free(transfer->path);
77 if(transfer->actdesc != NULL)
78 free(transfer->actdesc);
79 if(transfer->filterbuf != NULL)
80 free(transfer->filterbuf);
429d35e5 81 if(transfer->hash != NULL)
82 freehash(transfer->hash);
0309b83d 83 if(transfer->exitstatus != NULL)
84 free(transfer->exitstatus);
d3372da9 85 if(transfer->localend != NULL)
86 {
cab0b442 87 transfer->localend->readcb = NULL;
88 transfer->localend->writecb = NULL;
89 transfer->localend->errcb = NULL;
d3372da9 90 putsock(transfer->localend);
91 }
92 if(transfer->filterout != NULL)
93 {
cab0b442 94 transfer->filterout->readcb = NULL;
95 transfer->filterout->writecb = NULL;
96 transfer->filterout->errcb = NULL;
d3372da9 97 putsock(transfer->filterout);
98 }
99 if(transfer->fn != NULL)
100 putfnetnode(transfer->fn);
101 free(transfer);
102 numtransfers--;
103}
104
105struct transfer *newtransfer(void)
106{
107 struct transfer *new;
108 static int curid = 0;
109
110 new = smalloc(sizeof(*new));
111 memset(new, 0, sizeof(*new));
112 new->id = curid++;
113 new->size = -1;
114 new->endpos = -1;
115 new->filter = -1;
116 CBCHAININIT(new, trans_ac);
117 CBCHAININIT(new, trans_act);
118 CBCHAININIT(new, trans_p);
119 CBCHAININIT(new, trans_destroy);
120 CBCHAININIT(new, trans_filterout);
121 new->next = NULL;
122 new->prev = NULL;
123 time(&new->activity);
124 numtransfers++;
125 return(new);
126}
127
d3372da9 128void transferattach(struct transfer *transfer, struct transferiface *iface, void *data)
129{
130 if(transfer->iface != NULL)
131 transferdetach(transfer);
132 transfer->iface = iface;
133 transfer->ifacedata = data;
134}
135
136void transferdetach(struct transfer *transfer)
137{
138 if(transfer->iface != NULL)
139 {
140 transfer->iface->detach(transfer, transfer->ifacedata);
141 transfer->iface = NULL;
142 transfer->ifacedata = NULL;
143 }
144}
145
2c086721 146struct transfer *finddownload(wchar_t *peerid)
147{
148 struct transfer *transfer;
149
150 for(transfer = transfers; transfer != NULL; transfer = transfer->next)
151 {
152 if((transfer->dir == TRNSD_DOWN) && (transfer->iface == NULL) && !wcscmp(peerid, transfer->peerid))
153 break;
154 }
155 return(transfer);
156}
157
6c6bc9ce 158struct transfer *hasupload(struct fnet *fnet, wchar_t *peerid)
159{
160 struct transfer *transfer;
161
162 for(transfer = transfers; transfer != NULL; transfer = transfer->next)
163 {
c458597e 164 if((transfer->dir == TRNSD_UP) && (transfer->fnet == fnet) && !wcscmp(transfer->peerid, peerid))
6c6bc9ce 165 break;
166 }
167 return(transfer);
168}
169
d3372da9 170struct transfer *newupload(struct fnetnode *fn, struct fnet *fnet, wchar_t *nickid, struct transferiface *iface, void *data)
171{
172 struct transfer *transfer;
173
174 transfer = newtransfer();
175 if(fnet != NULL)
176 transfer->fnet = fnet;
177 else
178 transfer->fnet = fn->fnet;
179 transfer->peerid = swcsdup(nickid);
180 transfer->state = TRNS_HS;
181 transfer->dir = TRNSD_UP;
182 if(fn != NULL)
183 getfnetnode(transfer->fn = fn);
184 transferattach(transfer, iface, data);
185 linktransfer(transfer);
186 bumptransfer(transfer);
187 return(transfer);
188}
189
190void linktransfer(struct transfer *transfer)
191{
192 transfer->next = transfers;
193 transfer->prev = NULL;
194 if(transfers != NULL)
195 transfers->prev = transfer;
196 transfers = transfer;
197 GCBCHAINDOCB(newtransfercb, transfer);
198}
199
200void resettransfer(struct transfer *transfer)
201{
202 if(transfer->dir == TRNSD_DOWN)
203 {
204 if(transfer->iface != NULL)
205 transferdetach(transfer);
206 killfilter(transfer);
207 transfersetstate(transfer, TRNS_WAITING);
208 transfersetactivity(transfer, L"reset");
209 return;
210 }
211}
212
213struct transfer *findtransfer(int id)
214{
215 struct transfer *transfer;
216
217 for(transfer = transfers; transfer != NULL; transfer = transfer->next)
218 {
219 if(transfer->id == id)
220 break;
221 }
222 return(transfer);
223}
224
225static void transexpire(int cancelled, struct transfer *transfer)
226{
227 transfer->etimer = NULL;
228 if(!cancelled)
229 bumptransfer(transfer);
230 else
231 transfer->timeout = 0;
232}
233
cab0b442 234static void transferread(struct socket *sk, struct transfer *transfer)
d3372da9 235{
236 if(sockgetdatalen(sk) >= 65536)
237 sk->ignread = 1;
238 if((transfer->iface != NULL) && (transfer->iface->gotdata != NULL))
239 transfer->iface->gotdata(transfer, transfer->ifacedata);
240}
241
cab0b442 242static void transferwrite(struct socket *sk, struct transfer *transfer)
d3372da9 243{
244 if((transfer->iface != NULL) && (transfer->iface->wantdata != NULL))
245 transfer->iface->wantdata(transfer, transfer->ifacedata);
246}
247
cab0b442 248static void transfererr(struct socket *sk, int errno, struct transfer *transfer)
d3372da9 249{
250 if((transfer->iface != NULL) && (transfer->iface->endofdata != NULL))
251 transfer->iface->endofdata(transfer, transfer->ifacedata);
252}
253
254void transferputdata(struct transfer *transfer, void *buf, size_t size)
255{
256 time(&transfer->activity);
257 sockqueue(transfer->localend, buf, size);
258 transfer->curpos += size;
7a5e9d41 259 bytesdownload += size;
d3372da9 260 CBCHAINDOCB(transfer, trans_p, transfer);
261}
262
263void transferendofdata(struct transfer *transfer)
264{
265 if(transfer->curpos >= transfer->size)
266 {
267 transfersetstate(transfer, TRNS_DONE);
cab0b442 268 transfer->localend->readcb = NULL;
269 transfer->localend->writecb = NULL;
270 transfer->localend->errcb = NULL;
d3372da9 271 putsock(transfer->localend);
272 transfer->localend = NULL;
273 } else {
274 resettransfer(transfer);
275 }
276}
277
278size_t transferdatasize(struct transfer *transfer)
279{
280 return(sockqueuesize(transfer->localend));
281}
282
283void *transfergetdata(struct transfer *transfer, size_t *size)
284{
285 void *buf;
286
287 if(transfer->localend == NULL)
288 return(NULL);
289 transfer->localend->ignread = 0;
290 time(&transfer->activity);
291 if((buf = sockgetinbuf(transfer->localend, size)) == NULL)
292 return(NULL);
293 if((transfer->endpos >= 0) && (transfer->curpos + *size >= transfer->endpos))
294 {
295 *size = transfer->endpos - transfer->curpos;
296 buf = srealloc(buf, *size);
297 }
298 transfer->curpos += *size;
7a5e9d41 299 bytesupload += *size;
d3372da9 300 CBCHAINDOCB(transfer, trans_p, transfer);
301 return(buf);
302}
303
304void 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 313void transferstartdl(struct transfer *transfer, struct socket *sk)
314{
315 transfersetstate(transfer, TRNS_MAIN);
316 socksettos(sk, confgetint("transfer", "dltos"));
317}
318
d3372da9 319void 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
327void transfersetlocalend(struct transfer *transfer, struct socket *sk)
328{
329 if(transfer->localend != NULL)
330 putsock(transfer->localend);
331 getsock(transfer->localend = sk);
cab0b442 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;
d3372da9 336}
337
18f56d13 338static int tryreq(struct transfer *transfer)
d3372da9 339{
340 struct fnetnode *fn;
341 struct fnetpeer *peer;
18f56d13 342
343 if((fn = transfer->fn) != NULL)
344 {
345 if(fn->state != FNN_EST)
346 {
347 transfer->close = 1;
348 return(1);
349 }
350 peer = fnetfindpeer(fn, transfer->peerid);
351 } else {
352 peer = NULL;
353 for(fn = fnetnodes; fn != NULL; fn = fn->next)
354 {
355 if((fn->state == FNN_EST) && (fn->fnet == transfer->fnet) && ((peer = fnetfindpeer(fn, transfer->peerid)) != NULL))
356 break;
357 }
358 }
359 if(peer != NULL)
6329b4ba 360 {
361 time(&transfer->lastreq);
18f56d13 362 return(fn->fnet->reqconn(peer));
6329b4ba 363 }
18f56d13 364 return(1);
365}
366
367void trytransferbypeer(struct fnet *fnet, wchar_t *peerid)
368{
369 struct transfer *transfer;
370
371 for(transfer = transfers; transfer != NULL; transfer = transfer->next)
372 {
373 if((transfer->dir == TRNSD_DOWN) && (transfer->state == TRNS_WAITING))
374 {
375 if((transfer->fnet == fnet) && !wcscmp(transfer->peerid, peerid))
376 {
377 if(!tryreq(transfer))
378 return;
379 }
380 }
381 }
382}
383
384void bumptransfer(struct transfer *transfer)
385{
d3372da9 386 time_t now;
387
388 if((now = time(NULL)) < transfer->timeout)
389 {
18f56d13 390
d3372da9 391 if(transfer->etimer == NULL)
392 transfer->etimer = timercallback(transfer->timeout, (void (*)(int, void *))transexpire, transfer);
393 return;
394 }
395 if(transfer->etimer != NULL)
396 canceltimer(transfer->etimer);
397 switch(transfer->state)
398 {
399 case TRNS_WAITING:
d3372da9 400 transfer->etimer = timercallback(transfer->timeout = (time(NULL) + 30), (void (*)(int, void *))transexpire, transfer);
401 if(now - transfer->lastreq > 30)
18f56d13 402 tryreq(transfer);
d3372da9 403 break;
404 case TRNS_HS:
405 if(transfer->dir == TRNSD_UP)
406 {
407 if(now - transfer->activity < 60)
408 transfer->etimer = timercallback(transfer->timeout = (time(NULL) + 60), (void (*)(int, void *))transexpire, transfer);
409 else
410 transfer->close = 1;
411 } else if(transfer->dir == TRNSD_DOWN) {
412 if(now - transfer->activity < 60)
413 transfer->etimer = timercallback(transfer->timeout = (time(NULL) + 60), (void (*)(int, void *))transexpire, transfer);
414 else
415 resettransfer(transfer);
416 }
417 break;
418 case TRNS_MAIN:
419 if(transfer->dir == TRNSD_UP)
420 {
421 if(now - transfer->activity < 300)
422 transfer->etimer = timercallback(transfer->timeout = (time(NULL) + 300), (void (*)(int, void *))transexpire, transfer);
423 else
424 transfer->close = 1;
425 }
426 break;
427 }
428}
429
430void transfersetactivity(struct transfer *transfer, wchar_t *desc)
431{
432 time(&transfer->activity);
433 if(desc != NULL)
434 {
435 if(transfer->actdesc != NULL)
436 free(transfer->actdesc);
437 transfer->actdesc = swcsdup(desc);
438 }
439 bumptransfer(transfer);
440 CBCHAINDOCB(transfer, trans_act, transfer);
441}
442
443void transfersetstate(struct transfer *transfer, int newstate)
444{
445 transfer->state = newstate;
446 if(transfer->etimer != NULL)
447 canceltimer(transfer->etimer);
448 transfersetactivity(transfer, NULL);
449 CBCHAINDOCB(transfer, trans_ac, transfer, L"state");
450}
451
452void transfersetnick(struct transfer *transfer, wchar_t *newnick)
453{
454 if(transfer->peernick != NULL)
455 free(transfer->peernick);
456 transfer->peernick = swcsdup(newnick);
457 CBCHAINDOCB(transfer, trans_ac, transfer, L"nick");
458}
459
460void transfersetsize(struct transfer *transfer, int newsize)
461{
462 transfer->size = newsize;
463 CBCHAINDOCB(transfer, trans_ac, transfer, L"size");
464}
465
466void transferseterror(struct transfer *transfer, int error)
467{
468 transfer->error = error;
469 CBCHAINDOCB(transfer, trans_ac, transfer, L"error");
470}
471
472void transfersetpath(struct transfer *transfer, wchar_t *path)
473{
474 if(transfer->path != NULL)
475 free(transfer->path);
476 transfer->path = swcsdup(path);
477 CBCHAINDOCB(transfer, trans_ac, transfer, L"path");
478}
479
2c086721 480void transfersethash(struct transfer *transfer, struct hash *hash)
481{
482 if(transfer->hash != NULL)
483 freehash(transfer->hash);
484 transfer->hash = hash;
485 CBCHAINDOCB(transfer, trans_ac, transfer, L"hash");
486}
487
d3372da9 488int slotsleft(void)
489{
490 struct transfer *transfer;
491 int slots;
492
493 slots = confgetint("transfer", "slots");
494 for(transfer = transfers; (transfer != NULL) && (slots > 0); transfer = transfer->next)
495 {
496 if((transfer->dir == TRNSD_UP) && (transfer->state == TRNS_MAIN) && !transfer->flags.b.minislot)
497 slots--;
498 }
499 return(slots);
500}
501
502static void killfilter(struct transfer *transfer)
503{
504 if(transfer->filter != -1)
505 {
506 kill(-transfer->filter, SIGHUP);
507 transfer->filter = -1;
508 }
509 if(transfer->localend)
510 {
cab0b442 511 transfer->localend->readcb = NULL;
512 transfer->localend->writecb = NULL;
513 transfer->localend->errcb = NULL;
d3372da9 514 putsock(transfer->localend);
515 transfer->localend = NULL;
516 }
517 if(transfer->filterout)
518 {
cab0b442 519 transfer->filterout->readcb = NULL;
d3372da9 520 putsock(transfer->filterout);
521 transfer->filterout = NULL;
522 }
523 if(transfer->filterbuf)
524 {
525 free(transfer->filterbuf);
526 transfer->filterbuf = NULL;
527 }
528 transfer->filterbufsize = transfer->filterbufdata = 0;
529}
530
531static char *findfilter(struct passwd *pwd)
532{
533 char *path, *filtername;
534
535 if((path = sprintf2("%s/.dcdl-filter", pwd->pw_dir)) != NULL)
536 {
537 if(!access(path, X_OK))
538 return(path);
539 free(path);
540 }
541 if((filtername = icwcstombs(confgetstr("transfer", "filter"), NULL)) == NULL)
542 {
543 flog(LOG_WARNING, "could not convert filter name into local charset: %s", strerror(errno));
544 } else {
545 if(strchr(filtername, '/') == NULL)
546 {
547 if((path = sprintf2("/etc/%s", filtername)) != NULL)
548 {
549 if(!access(path, X_OK))
550 {
551 free(filtername);
552 return(path);
553 }
554 free(path);
555 }
556 if((path = sprintf2("/usr/etc/%s", filtername)) != NULL)
557 {
558 if(!access(path, X_OK))
559 {
560 free(filtername);
561 return(path);
562 }
563 free(path);
564 }
565 if((path = sprintf2("/usr/local/etc/%s", filtername)) != NULL)
566 {
567 if(!access(path, X_OK))
568 {
569 free(filtername);
570 return(path);
571 }
572 free(path);
573 }
574 } else {
575 if(!access(filtername, X_OK))
576 return(filtername);
577 }
578 free(filtername);
579 }
580 return(NULL);
581}
582
0309b83d 583static void handletranscmd(struct transfer *transfer, wchar_t *cmd, wchar_t *arg)
584{
585 if(!wcscmp(cmd, L"status")) {
586 if(arg == NULL)
587 arg = L"";
588 if(transfer->exitstatus != NULL)
589 free(transfer->exitstatus);
590 transfer->exitstatus = swcsdup(arg);
591 }
592}
593
cab0b442 594static void filterread(struct socket *sk, struct transfer *transfer)
d3372da9 595{
596 char *buf, *p, *p2;
597 size_t bufsize;
598 wchar_t *cmd, *arg;
599
600 if((buf = sockgetinbuf(sk, &bufsize)) == NULL)
cab0b442 601 return;
d3372da9 602 bufcat(transfer->filterbuf, buf, bufsize);
603 free(buf);
5b193db0 604 while((p = memchr(transfer->filterbuf, '\n', transfer->filterbufdata)) != NULL)
d3372da9 605 {
606 *(p++) = 0;
607 if((p2 = strchr(transfer->filterbuf, ' ')) != NULL)
608 *(p2++) = 0;
609 if((cmd = icmbstowcs(transfer->filterbuf, NULL)) != NULL)
610 {
611 arg = NULL;
612 if(p2 != NULL)
613 {
614 if((arg = icmbstowcs(p2, NULL)) == NULL)
13b303d4 615 flog(LOG_WARNING, "filter sent a string which could not be converted into the local charset: %s: %s", p2, strerror(errno));
d3372da9 616 }
0309b83d 617 handletranscmd(transfer, cmd, arg);
d3372da9 618 CBCHAINDOCB(transfer, trans_filterout, transfer, cmd, arg);
619 if(arg != NULL)
620 free(arg);
621 free(cmd);
622 } else {
623 flog(LOG_WARNING, "filter sent a string which could not be converted into the local charset: %s: %s", transfer->filterbuf, strerror(errno));
624 }
625 memmove(transfer->filterbuf, p, transfer->filterbufdata -= (p - transfer->filterbuf));
626 }
627}
628
629static void filterexit(pid_t pid, int status, void *data)
630{
631 struct transfer *transfer;
734dc54e 632 struct fnet *fnet;
633 wchar_t *peerid;
d3372da9 634
635 for(transfer = transfers; transfer != NULL; transfer = transfer->next)
636 {
637 if(transfer->filter == pid)
638 {
639 transfer->filter = -1;
640 killfilter(transfer);
734dc54e 641 fnet = transfer->fnet;
642 peerid = swcsdup(transfer->peerid);
d3372da9 643 if(WEXITSTATUS(status))
d3372da9 644 resettransfer(transfer);
734dc54e 645 else
d3372da9 646 freetransfer(transfer);
734dc54e 647 trytransferbypeer(fnet, peerid);
648 free(peerid);
d3372da9 649 break;
650 }
651 }
652}
653
654int forkfilter(struct transfer *transfer)
655{
656 char *filtername, *filename, *peerid, *buf;
657 wchar_t *wfilename;
658 struct passwd *pwent;
659 pid_t pid;
660 int inpipe, outpipe;
661 char **argv;
662 size_t argvsize, argvdata;
663 struct socket *insock, *outsock;
9ec790e8 664 struct wcspair *ta;
d3372da9 665 char *rec, *val;
666
667 wfilename = transfer->path;
668 if(transfer->fnet->filebasename != NULL)
669 wfilename = transfer->fnet->filebasename(wfilename);
670 if(transfer->auth == NULL)
671 {
672 flog(LOG_WARNING, "tried to fork filter for transfer with NULL authhandle (tranfer %i)", transfer->id);
673 errno = EACCES;
674 return(-1);
675 }
676 if((pwent = getpwuid(transfer->owner)) == NULL)
677 {
678 flog(LOG_WARNING, "no passwd entry for uid %i (found in transfer %i)", transfer->owner, transfer->id);
679 errno = EACCES;
680 return(-1);
681 }
682 if((filtername = findfilter(pwent)) == NULL)
683 {
684 flog(LOG_WARNING, "could not find filter for user %s", pwent->pw_name);
685 errno = ENOENT;
686 return(-1);
687 }
688 if((filename = icwcstombs(wfilename, NULL)) == NULL)
689 {
690 if((buf = icwcstombs(wfilename, "UTF-8")) == NULL)
691 {
692 flog(LOG_WARNING, "could convert transfer filename to neither local charset nor UTF-8: %s", strerror(errno));
693 return(-1);
694 }
695 filename = sprintf2("utf8-%s", buf);
696 free(buf);
697 }
698 if((peerid = icwcstombs(transfer->peerid, NULL)) == NULL)
699 {
700 if((buf = icwcstombs(transfer->peerid, "UTF-8")) == NULL)
701 {
702 flog(LOG_WARNING, "could convert transfer peerid to neither local charset nor UTF-8: %s", strerror(errno));
703 free(filename);
704 return(-1);
705 }
706 peerid = sprintf2("utf8-%s", buf);
707 free(buf);
708 }
709 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)
710 {
711 flog(LOG_WARNING, "could not fork session for filter for transfer %i: %s", transfer->id, strerror(errno));
712 return(-1);
713 }
714 if(pid == 0)
715 {
716 argv = NULL;
717 argvsize = argvdata = 0;
718 buf = sprintf2("%i", transfer->size);
719 addtobuf(argv, filtername);
720 addtobuf(argv, filename);
721 addtobuf(argv, buf);
722 addtobuf(argv, peerid);
082b0419 723 if(transfer->hash)
724 {
725 if((buf = icwcstombs(unparsehash(transfer->hash), NULL)) != NULL)
726 {
727 /* XXX: I am very doubtful of this, but it can just as
728 * well be argued that all data should be presented as
729 * key-value pairs. */
730 addtobuf(argv, "hash");
731 addtobuf(argv, buf);
732 } else {
733 flog(LOG_WARNING, "could not convert hash to local charset");
734 }
735 }
d3372da9 736 for(ta = transfer->args; ta != NULL; ta = ta->next)
737 {
9ec790e8 738 if((rec = icwcstombs(ta->key, NULL)) == NULL)
d3372da9 739 continue;
740 if((val = icwcstombs(ta->val, NULL)) == NULL)
741 continue;
742 addtobuf(argv, rec);
743 addtobuf(argv, val);
744 }
745 addtobuf(argv, NULL);
746 execv(filtername, argv);
747 flog(LOG_WARNING, "could not exec filter %s: %s", filtername, strerror(errno));
748 exit(127);
749 }
750 insock = wrapsock(inpipe);
751 outsock = wrapsock(outpipe);
752 /* Really, really strange thing here - sometimes the kernel would
753 * return POLLIN on insock, even though it's a write-side
754 * pipe. The corresponding read on the pipe naturally returns
755 * EBADF, causing doldacond to think there's something wrong with
756 * the fd, and thus it closes it. Until I can find out whyever the
757 * kernel gives a POLLIN on the fd (if I can at all...), I'll just
758 * set ignread on insock for now. */
759 insock->ignread = 1;
760 transfer->filter = pid;
761 transfersetlocalend(transfer, insock);
762 getsock(transfer->filterout = outsock);
cab0b442 763 outsock->data = transfer;
764 outsock->readcb = (void (*)(struct socket *, void *))filterread;
d3372da9 765 putsock(insock);
766 putsock(outsock);
767 free(filtername);
768 free(filename);
769 free(peerid);
770 return(0);
771}
772
773static int run(void)
774{
775 struct transfer *transfer, *next;
776
777 for(transfer = transfers; transfer != NULL; transfer = transfer->next)
778 {
779 if((transfer->endpos >= 0) && (transfer->state == TRNS_MAIN) && (transfer->localend != NULL) && (transfer->localend->state == SOCK_EST) && (transfer->curpos >= transfer->endpos))
780 {
781 if((transfer->iface != NULL) && (transfer->iface->endofdata != NULL))
782 transfer->iface->endofdata(transfer, transfer->ifacedata);
783 closesock(transfer->localend);
784 }
785 }
786 for(transfer = transfers; transfer != NULL; transfer = next)
787 {
788 next = transfer->next;
789 if(transfer->close)
790 {
791 transferdetach(transfer);
792 freetransfer(transfer);
793 continue;
794 }
795 }
796 return(0);
797}
798
799static struct configvar myvars[] =
800{
801 {CONF_VAR_INT, "slots", {.num = 3}},
802 {CONF_VAR_INT, "ultos", {.num = SOCK_TOS_MAXTP}},
803 {CONF_VAR_INT, "dltos", {.num = SOCK_TOS_MAXTP}},
804 {CONF_VAR_STRING, "filter", {.str = L"dc-filter"}},
01663fd9 805 {CONF_VAR_BOOL, "ulquota", {.num = 0}},
d3372da9 806 {CONF_VAR_END}
807};
808
809static struct module me =
810{
811 .conf =
812 {
813 .vars = myvars
814 },
815 .name = "transfer",
816 .run = run
817};
818
819MODULE(me);
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