2 This file is part of GNUnet.
3 (C) 2001, 2002, 2003, 2004, 2005, 2006, 2008, 2009, 2010 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 2, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
23 * @brief main FS functions
24 * @author Christian Grothoff
28 #include "gnunet_util_lib.h"
29 #include "gnunet_fs_service.h"
34 * Start the given job (send signal, remove from pending queue, update
35 * counters and state).
37 * @param qe job to start
40 start_job (struct GNUNET_FS_QueueEntry *qe)
42 qe->client = GNUNET_CLIENT_connect (qe->h->sched, "fs", qe->h->cfg);
43 if (qe->client == NULL)
48 qe->start (qe->cls, qe->client);
50 qe->h->active_blocks += qe->blocks;
51 qe->start_time = GNUNET_TIME_absolute_get ();
52 GNUNET_CONTAINER_DLL_remove (qe->h->pending_head,
55 GNUNET_CONTAINER_DLL_insert_after (qe->h->running_head,
63 * Stop the given job (send signal, remove from active queue, update
64 * counters and state).
66 * @param qe job to stop
69 stop_job (struct GNUNET_FS_QueueEntry *qe)
73 qe->h->active_downloads--;
74 qe->h->active_blocks -= qe->blocks;
75 qe->run_time = GNUNET_TIME_relative_add (qe->run_time,
76 GNUNET_TIME_absolute_get_duration (qe->start_time));
77 GNUNET_CONTAINER_DLL_remove (qe->h->running_head,
80 GNUNET_CONTAINER_DLL_insert_after (qe->h->pending_head,
88 * Process the jobs in the job queue, possibly starting some
89 * and stopping others.
91 * @param cls the 'struct GNUNET_FS_Handle'
92 * @param tc scheduler context
95 process_job_queue (void *cls,
96 const struct GNUNET_SCHEDULER_TaskContext *tc)
98 struct GNUNET_FS_Handle *h = cls;
99 struct GNUNET_FS_QueueEntry *qe;
100 struct GNUNET_FS_QueueEntry *next;
101 struct GNUNET_TIME_Relative run_time;
102 struct GNUNET_TIME_Relative restart_at;
103 struct GNUNET_TIME_Relative rst;
104 struct GNUNET_TIME_Absolute end_time;
106 h->queue_job = GNUNET_SCHEDULER_NO_TASK;
107 next = h->pending_head;
108 while (NULL != (qe = next))
111 if (h->running_head == NULL)
116 if ( (qe->blocks + h->active_blocks <= h->max_parallel_requests) &&
117 (h->active_downloads + 1 <= h->max_parallel_downloads) )
123 if (h->pending_head == NULL)
124 return; /* no need to stop anything */
125 restart_at = GNUNET_TIME_UNIT_FOREVER_REL;
126 next = h->running_head;
127 while (NULL != (qe = next))
130 /* FIXME: might be faster/simpler to do this calculation only once
131 when we start a job (OTOH, this would allow us to dynamically
132 and easily adjust qe->blocks over time, given the right API...) */
133 run_time = GNUNET_TIME_relative_multiply (h->avg_block_latency,
134 qe->blocks * qe->start_times);
135 end_time = GNUNET_TIME_absolute_add (qe->start_time,
137 rst = GNUNET_TIME_absolute_get_remaining (end_time);
138 restart_at = GNUNET_TIME_relative_min (rst, restart_at);
143 h->queue_job = GNUNET_SCHEDULER_add_delayed (h->sched,
151 * Add a job to the queue.
153 * @param h handle to the overall FS state
154 * @param start function to call to begin the job
155 * @param stop function to call to pause the job, or on dequeue (if the job was running)
156 * @param cls closure for start and stop
157 * @param blocks number of blocks this jobs uses
158 * @return queue handle
160 struct GNUNET_FS_QueueEntry *
161 GNUNET_FS_queue_ (struct GNUNET_FS_Handle *h,
162 GNUNET_FS_QueueStart start,
163 GNUNET_FS_QueueStop stop,
167 struct GNUNET_FS_QueueEntry *qe;
169 qe = GNUNET_malloc (sizeof (struct GNUNET_FS_QueueEntry));
174 qe->queue_time = GNUNET_TIME_absolute_get ();
176 GNUNET_CONTAINER_DLL_insert_after (h->pending_head,
180 if (h->queue_job != GNUNET_SCHEDULER_NO_TASK)
181 GNUNET_SCHEDULER_cancel (h->sched,
184 = GNUNET_SCHEDULER_add_now (h->sched,
192 * Dequeue a job from the queue.
193 * @param qh handle for the job
196 GNUNET_FS_dequeue_ (struct GNUNET_FS_QueueEntry *qh)
198 struct GNUNET_FS_Handle *h;
201 if (qh->client != NULL)
203 GNUNET_CONTAINER_DLL_remove (h->pending_head,
207 if (h->queue_job != GNUNET_SCHEDULER_NO_TASK)
208 GNUNET_SCHEDULER_cancel (h->sched,
211 = GNUNET_SCHEDULER_add_now (h->sched,
218 * Return the full filename where we would store state information
219 * (for serialization/deserialization).
221 * @param h master context
222 * @param ext component of the path
223 * @param ent entity identifier (or emtpy string for the directory)
224 * @return NULL on error
227 get_serialization_file_name (struct GNUNET_FS_Handle *h,
234 GNUNET_CONFIGURATION_get_value_filename (h->cfg,
239 GNUNET_asprintf (&ret,
247 GNUNET_free (basename);
253 * Return a read handle for deserialization.
255 * @param h master context
256 * @param ext component of the path
257 * @param ent entity identifier (or emtpy string for the directory)
258 * @return NULL on error
260 static struct GNUNET_BIO_ReadHandle *
261 get_read_handle (struct GNUNET_FS_Handle *h,
266 struct GNUNET_BIO_ReadHandle *ret;
268 fn = get_serialization_file_name (h, ext, ent);
271 ret = GNUNET_BIO_read_open (fn);
278 * Return a write handle for serialization.
280 * @param h master context
281 * @param ext component of the path
282 * @param ent entity identifier (or emtpy string for the directory)
283 * @return NULL on error
285 static struct GNUNET_BIO_WriteHandle *
286 get_write_handle (struct GNUNET_FS_Handle *h,
291 struct GNUNET_BIO_WriteHandle *ret;
293 fn = get_serialization_file_name (h, ext, ent);
296 ret = GNUNET_BIO_write_open (fn);
303 * Remove serialization/deserialization file from disk.
305 * @param h master context
306 * @param ext component of the path
307 * @param ent entity identifier
310 remove_sync_file (struct GNUNET_FS_Handle *h,
316 if ( (NULL == ent) ||
317 (0 == strlen (ent)) )
322 filename = get_serialization_file_name (h, ext, ent);
323 if (0 != UNLINK (filename))
324 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING,
327 GNUNET_free (filename);
333 * Using the given serialization filename, try to deserialize
334 * the file-information tree associated with it.
336 * @param h master context
337 * @param filename name of the file (without directory) with
339 * @return NULL on error
341 static struct GNUNET_FS_FileInformation *
342 deserialize_file_information (struct GNUNET_FS_Handle *h,
343 const char *filename);
347 * Using the given serialization filename, try to deserialize
348 * the file-information tree associated with it.
350 * @param h master context
351 * @param fn name of the file (without directory) with
353 * @param rh handle for reading
354 * @return NULL on error
356 static struct GNUNET_FS_FileInformation *
357 deserialize_fi_node (struct GNUNET_FS_Handle *h,
359 struct GNUNET_BIO_ReadHandle *rh)
361 struct GNUNET_FS_FileInformation *ret;
362 struct GNUNET_FS_FileInformation *nxt;
370 GNUNET_BIO_read (rh, "status flag", &b, sizeof(b)))
375 ret = GNUNET_malloc (sizeof (struct GNUNET_FS_FileInformation));
380 GNUNET_BIO_read_meta_data (rh, "metadata", &ret->meta)) ||
382 GNUNET_BIO_read_string (rh, "ksk-uri", &ksks, 32*1024)) ||
385 (ret->keywords = GNUNET_FS_uri_parse (ksks, NULL))) ) ||
387 GNUNET_FS_uri_test_ksk (ret->keywords)) ||
389 GNUNET_BIO_read_string (rh, "chk-uri", &chks, 1024)) ||
392 (ret->chk_uri = GNUNET_FS_uri_parse (chks, NULL))) ||
394 GNUNET_FS_uri_test_chk (ret->chk_uri)) ) ) ||
396 GNUNET_BIO_read_int64 (rh, &ret->expirationTime.value)) ||
398 GNUNET_BIO_read_int64 (rh, &ret->start_time.value)) ||
400 GNUNET_BIO_read_string (rh, "emsg", &ret->emsg, 16*1024)) ||
402 GNUNET_BIO_read_string (rh, "fn", &ret->filename, 16*1024)) ||
404 GNUNET_BIO_read_int32 (rh, &ret->anonymity)) ||
406 GNUNET_BIO_read_int32 (rh, &ret->priority)) )
410 case 0: /* file-insert */
412 GNUNET_BIO_read_int64 (rh, &ret->data.file.file_size))
414 ret->is_directory = GNUNET_NO;
415 ret->data.file.do_index = GNUNET_NO;
416 ret->data.file.have_hash = GNUNET_NO;
417 ret->data.file.index_start_confirmed = GNUNET_NO;
418 /* FIXME: what's our approach for dealing with the
419 'reader' and 'reader_cls' fields? I guess the only
420 good way would be to dump "small" files into
421 'rh' and to not support serialization of "large"
424 case 1: /* file-index, no hash */
426 GNUNET_BIO_read_int64 (rh, &ret->data.file.file_size))
428 ret->is_directory = GNUNET_NO;
429 ret->data.file.do_index = GNUNET_YES;
430 ret->data.file.have_hash = GNUNET_NO;
431 ret->data.file.index_start_confirmed = GNUNET_NO;
432 /* FIXME: what's our approach for dealing with the
433 'reader' and 'reader_cls' fields?
434 (should be easy for indexing since we must have a file) */
436 case 2: /* file-index-with-hash */
438 GNUNET_BIO_read_int64 (rh, &ret->data.file.file_size)) ||
440 GNUNET_BIO_read (rh, "fileid", &ret->data.file.file_id, sizeof (GNUNET_HashCode))) )
442 ret->is_directory = GNUNET_NO;
443 ret->data.file.do_index = GNUNET_YES;
444 ret->data.file.have_hash = GNUNET_YES;
445 ret->data.file.index_start_confirmed = GNUNET_NO;
446 /* FIXME: what's our approach for dealing with the
447 'reader' and 'reader_cls' fields?
448 (should be easy for indexing since we must have a file) */
450 case 3: /* file-index-with-hash-confirmed */
452 GNUNET_BIO_read_int64 (rh, &ret->data.file.file_size)) ||
454 GNUNET_BIO_read (rh, "fileid", &ret->data.file.file_id, sizeof (GNUNET_HashCode))) )
456 ret->is_directory = GNUNET_NO;
457 ret->data.file.do_index = GNUNET_YES;
458 ret->data.file.have_hash = GNUNET_YES;
459 ret->data.file.index_start_confirmed = GNUNET_YES;
460 /* FIXME: what's our approach for dealing with the
461 'reader' and 'reader_cls' fields?
462 (should be easy for indexing since we must have a file) */
464 case 4: /* directory */
466 GNUNET_BIO_read_int32 (rh, &dsize)) ||
467 (NULL == (ret->data.dir.dir_data = GNUNET_malloc_large (dsize))) ||
469 GNUNET_BIO_read (rh, "dir-data", ret->data.dir.dir_data, dsize)) ||
471 GNUNET_BIO_read_string (rh, "ent-filename", &filename, 16*1024)) )
473 ret->data.dir.dir_size = (uint32_t) dsize;
474 ret->is_directory = GNUNET_YES;
475 if (filename != NULL)
477 ret->data.dir.entries = deserialize_file_information (h, filename);
478 GNUNET_free (filename);
480 nxt = ret->data.dir.entries;
492 /* FIXME: adjust ret->start_time! */
493 ret->serialization = GNUNET_strdup (fn);
495 GNUNET_BIO_read_string (rh, "nxt-filename", &filename, 16*1024))
497 if (filename != NULL)
499 ret->next = deserialize_file_information (h, filename);
500 GNUNET_free (filename);
505 GNUNET_free_non_null (ksks);
506 GNUNET_free_non_null (chks);
507 GNUNET_free_non_null (filename);
508 GNUNET_FS_file_information_destroy (ret, NULL, NULL);
515 * Using the given serialization filename, try to deserialize
516 * the file-information tree associated with it.
518 * @param h master context
519 * @param filename name of the file (without directory) with
521 * @return NULL on error
523 static struct GNUNET_FS_FileInformation *
524 deserialize_file_information (struct GNUNET_FS_Handle *h,
525 const char *filename)
527 struct GNUNET_FS_FileInformation *ret;
528 struct GNUNET_BIO_ReadHandle *rh;
531 rh = get_read_handle (h, "publish-fi", filename);
534 ret = deserialize_fi_node (h, filename, rh);
536 GNUNET_BIO_read_close (rh, &emsg))
538 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
539 _("Failed to resume publishing information `%s': %s\n"),
549 * Given a serialization name (full absolute path), return the
550 * basename of the file (without the path), which must only
551 * consist of the 6 random characters.
553 * @param fullname name to extract the basename from
554 * @return copy of the basename, NULL on error
557 get_serialization_short_name (const char *fullname)
564 /* FIXME: we could do this faster since we know
565 the length of 'end'... */
568 if (DIR_SEPARATOR == *nxt)
572 if ( (end == NULL) ||
573 (strlen (end) == 0) )
578 GNUNET_break (6 == strlen (end));
579 return GNUNET_strdup (end);
584 * Create a new random name for serialization.
586 * @param h master context
587 * @param ext component of the path
588 * @return NULL on errror
591 make_serialization_file_name (struct GNUNET_FS_Handle *h,
598 /* FIXME: check if persistence option was set! */
599 dn = get_serialization_file_name (h, ext, "");
600 fn = GNUNET_DISK_mktemp (dn);
603 return NULL; /* epic fail */
604 ret = get_serialization_short_name (fn);
611 * Create a temporary file on disk to store the current
614 * @param fi file information to sync with disk
617 GNUNET_FS_file_information_sync_ (struct GNUNET_FS_FileInformation * fi)
620 struct GNUNET_BIO_WriteHandle *wh;
625 /* FIXME: check if persistence option was set! */
626 if (NULL == fi->serialization)
627 fi->serialization = make_serialization_file_name (fi->h, "publish-fi");
628 if (NULL == fi->serialization)
630 wh = get_write_handle (fi->h, "publish-fi", fi->serialization);
633 GNUNET_free (fi->serialization);
634 fi->serialization = NULL;
637 if (GNUNET_YES == fi->is_directory)
639 else if (GNUNET_YES == fi->data.file.index_start_confirmed)
641 else if (GNUNET_YES == fi->data.file.have_hash)
643 else if (GNUNET_YES == fi->data.file.do_index)
647 if (fi->keywords != NULL)
648 ksks = GNUNET_FS_uri_to_string (fi->keywords);
651 if (fi->chk_uri != NULL)
652 chks = GNUNET_FS_uri_to_string (fi->chk_uri);
656 GNUNET_BIO_write (wh, &b, sizeof (b))) ||
658 GNUNET_BIO_write_meta_data (wh, fi->meta)) ||
660 GNUNET_BIO_write_string (wh, ksks)) ||
662 GNUNET_BIO_write_string (wh, chks)) ||
664 GNUNET_BIO_write_int64 (wh, fi->expirationTime.value)) ||
666 GNUNET_BIO_write_int64 (wh, fi->start_time.value)) ||
668 GNUNET_BIO_write_string (wh, fi->emsg)) ||
670 GNUNET_BIO_write_string (wh, fi->filename)) ||
672 GNUNET_BIO_write_int32 (wh, fi->anonymity)) ||
674 GNUNET_BIO_write_int32 (wh, fi->priority)) )
676 GNUNET_free_non_null (chks);
678 GNUNET_free_non_null (ksks);
683 case 0: /* file-insert */
685 GNUNET_BIO_write_int64 (wh, fi->data.file.file_size))
687 /* FIXME: what's our approach for dealing with the
688 'reader' and 'reader_cls' fields? I guess the only
689 good way would be to dump "small" files into
690 'rh' and to not support serialization of "large"
693 case 1: /* file-index, no hash */
695 GNUNET_BIO_write_int64 (wh, fi->data.file.file_size))
698 case 2: /* file-index-with-hash */
699 case 3: /* file-index-with-hash-confirmed */
701 GNUNET_BIO_write_int64 (wh, fi->data.file.file_size)) ||
703 GNUNET_BIO_write (wh, &fi->data.file.file_id, sizeof (GNUNET_HashCode))) )
705 /* FIXME: what's our approach for dealing with the
706 'reader' and 'reader_cls' fields?
707 (should be easy for indexing since we must have a file) */
709 case 4: /* directory */
711 GNUNET_BIO_write_int32 (wh, fi->data.dir.dir_size)) ||
713 GNUNET_BIO_write (wh, fi->data.dir.dir_data, (uint32_t) fi->data.dir.dir_size)) ||
715 GNUNET_BIO_write_string (wh, fi->data.dir.entries->serialization)) )
723 GNUNET_BIO_write_string (wh, fi->next->serialization))
726 GNUNET_BIO_write_close (wh))
729 (void) GNUNET_BIO_write_close (wh);
730 GNUNET_free_non_null (chks);
731 GNUNET_free_non_null (ksks);
732 fn = get_serialization_file_name (fi->h, "publish-fi", fi->serialization);
733 if (0 != UNLINK (fn))
734 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", fn);
736 GNUNET_free (fi->serialization);
737 fi->serialization = NULL;
743 * Find the entry in the file information struct where the
744 * serialization filename matches the given name.
746 * @param pos file information to search
747 * @param srch filename to search for
748 * @return NULL if srch was not found in this subtree
750 static struct GNUNET_FS_FileInformation *
751 find_file_position (struct GNUNET_FS_FileInformation *pos,
754 struct GNUNET_FS_FileInformation *r;
758 if (0 == strcmp (srch,
761 if (pos->is_directory)
763 r = find_file_position (pos->data.dir.entries,
775 * Signal the FS's progress function that we are resuming
778 * @param cls closure (of type "struct GNUNET_FS_PublishContext*")
779 * @param fi the entry in the publish-structure
780 * @param length length of the file or directory
781 * @param meta metadata for the file or directory (can be modified)
782 * @param uri pointer to the keywords that will be used for this entry (can be modified)
783 * @param anonymity pointer to selected anonymity level (can be modified)
784 * @param priority pointer to selected priority (can be modified)
785 * @param expirationTime pointer to selected expiration time (can be modified)
786 * @param client_info pointer to client context set upon creation (can be modified)
787 * @return GNUNET_OK to continue (always)
790 fip_signal_resume(void *cls,
791 struct GNUNET_FS_FileInformation *fi,
793 struct GNUNET_CONTAINER_MetaData *meta,
794 struct GNUNET_FS_Uri **uri,
797 struct GNUNET_TIME_Absolute *expirationTime,
800 struct GNUNET_FS_PublishContext *sc = cls;
801 struct GNUNET_FS_ProgressInfo pi;
803 pi.status = GNUNET_FS_STATUS_PUBLISH_RESUME;
804 pi.value.publish.specifics.resume.message = sc->fi->emsg;
805 pi.value.publish.specifics.resume.chk_uri = sc->fi->chk_uri;
806 *client_info = GNUNET_FS_publish_make_status_ (&pi, sc, fi, 0);
812 * Function called with a filename of serialized publishing operation
815 * @param cls the 'struct GNUNET_FS_Handle*'
816 * @param filename complete filename (absolute path)
817 * @return GNUNET_OK (continue to iterate)
820 deserialize_publish_file (void *cls,
821 const char *filename)
823 struct GNUNET_FS_Handle *h = cls;
824 struct GNUNET_BIO_ReadHandle *rh;
825 struct GNUNET_FS_PublishContext *pc;
833 pc = GNUNET_malloc (sizeof (struct GNUNET_FS_PublishContext));
838 rh = GNUNET_BIO_read_open (filename);
842 GNUNET_BIO_read_string (rh, "publish-nid", &pc->nid, 1024)) ||
844 GNUNET_BIO_read_string (rh, "publish-nuid", &pc->nuid, 1024)) ||
846 GNUNET_BIO_read_int32 (rh, &options)) ||
848 GNUNET_BIO_read_int32 (rh, &all_done)) ||
850 GNUNET_BIO_read_string (rh, "publish-firoot", &fi_root, 128)) ||
852 GNUNET_BIO_read_string (rh, "publish-fipos", &fi_pos, 128)) ||
854 GNUNET_BIO_read_string (rh, "publish-ns", &ns, 1024)) )
856 pc->options = options;
857 pc->all_done = all_done;
858 pc->fi = deserialize_file_information (h, fi_root);
863 pc->namespace = GNUNET_FS_namespace_create (h, ns);
864 if (pc->namespace == NULL)
866 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
867 _("Failed to recover namespace `%s', cannot resume publishing operation.\n"),
874 pc->fi_pos = find_file_position (pc->fi,
876 GNUNET_free (fi_pos);
877 if (pc->fi_pos == NULL)
879 /* failed to find position for resuming, outch! Will start from root! */
881 if (pc->all_done != GNUNET_YES)
885 pc->serialization = get_serialization_short_name (filename);
886 /* generate RESUME event(s) */
887 GNUNET_FS_file_information_inspect (pc->fi,
891 /* re-start publishing (if needed)... */
892 if (pc->all_done != GNUNET_YES)
894 = GNUNET_SCHEDULER_add_with_priority (h->sched,
895 GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
896 &GNUNET_FS_publish_main_,
899 GNUNET_BIO_read_close (rh, &emsg))
901 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
902 _("Failed to resume publishing operation `%s': %s\n"),
909 GNUNET_free_non_null (pc->nid);
910 GNUNET_free_non_null (pc->nuid);
911 GNUNET_free_non_null (fi_root);
912 GNUNET_free_non_null (ns);
915 GNUNET_BIO_read_close (rh, &emsg)) )
917 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
918 _("Failed to resume publishing operation `%s': %s\n"),
924 GNUNET_FS_file_information_destroy (pc->fi, NULL, NULL);
925 remove_sync_file (h, "publish", pc->serialization);
926 GNUNET_free_non_null (pc->serialization);
933 * Synchronize this publishing struct with its mirror
934 * on disk. Note that all internal FS-operations that change
935 * publishing structs should already call "sync" internally,
936 * so this function is likely not useful for clients.
938 * @param pc the struct to sync
941 GNUNET_FS_publish_sync_ (struct GNUNET_FS_PublishContext *pc)
943 struct GNUNET_BIO_WriteHandle *wh;
945 if (NULL == pc->serialization)
946 pc->serialization = make_serialization_file_name (pc->h,
948 if (NULL == pc->serialization)
952 if (NULL == pc->fi->serialization)
957 wh = get_write_handle (pc->h, "publish", pc->serialization);
959 GNUNET_BIO_write_string (wh, pc->nid)) ||
961 GNUNET_BIO_write_string (wh, pc->nuid)) ||
963 GNUNET_BIO_write_int32 (wh, pc->options)) ||
965 GNUNET_BIO_write_int32 (wh, pc->all_done)) ||
967 GNUNET_BIO_write_string (wh, pc->fi->serialization)) ||
969 GNUNET_BIO_write_string (wh, (pc->fi_pos == NULL) ? NULL : pc->fi_pos->serialization)) ||
971 GNUNET_BIO_write_string (wh, (pc->namespace == NULL) ? NULL : pc->namespace->name)) )
973 (void) GNUNET_BIO_write_close (wh);
974 remove_sync_file (pc->h, "publish", pc->serialization);
975 GNUNET_free (pc->serialization);
976 pc->serialization = NULL;
980 GNUNET_BIO_write_close (wh))
982 remove_sync_file (pc->h, "publish", pc->serialization);
983 GNUNET_free (pc->serialization);
984 pc->serialization = NULL;
991 * Deserialize information about pending publish operations.
993 * @param h master context
996 deserialize_publish (struct GNUNET_FS_Handle *h)
1000 dn = get_serialization_file_name (h, "publish", "");
1003 GNUNET_DISK_directory_scan (dn, &deserialize_publish_file, h);
1009 * Setup a connection to the file-sharing service.
1011 * @param sched scheduler to use
1012 * @param cfg configuration to use
1013 * @param client_name unique identifier for this client
1014 * @param upcb function to call to notify about FS actions
1015 * @param upcb_cls closure for upcb
1016 * @param flags specific attributes for fs-operations
1017 * @param ... list of optional options, terminated with GNUNET_FS_OPTIONS_END
1018 * @return NULL on error
1020 struct GNUNET_FS_Handle *
1021 GNUNET_FS_start (struct GNUNET_SCHEDULER_Handle *sched,
1022 const struct GNUNET_CONFIGURATION_Handle *cfg,
1023 const char *client_name,
1024 GNUNET_FS_ProgressCallback upcb,
1026 enum GNUNET_FS_Flags flags,
1029 struct GNUNET_FS_Handle *ret;
1030 struct GNUNET_CLIENT_Connection *client;
1031 enum GNUNET_FS_OPTIONS opt;
1034 client = GNUNET_CLIENT_connect (sched,
1039 ret = GNUNET_malloc (sizeof (struct GNUNET_FS_Handle));
1042 ret->client_name = GNUNET_strdup (client_name);
1044 ret->upcb_cls = upcb_cls;
1045 ret->client = client;
1047 ret->max_parallel_downloads = 1;
1048 ret->max_parallel_requests = 1;
1049 ret->avg_block_latency = GNUNET_TIME_UNIT_MINUTES; /* conservative starting point */
1050 va_start (ap, flags);
1051 while (GNUNET_FS_OPTIONS_END != (opt = va_arg (ap, enum GNUNET_FS_OPTIONS)))
1055 case GNUNET_FS_OPTIONS_DOWNLOAD_PARALLELISM:
1056 ret->max_parallel_downloads = va_arg (ap, unsigned int);
1058 case GNUNET_FS_OPTIONS_REQUEST_PARALLELISM:
1059 ret->max_parallel_requests = va_arg (ap, unsigned int);
1063 GNUNET_free (ret->client_name);
1070 // FIXME: setup receive-loop with client (do we need one?)
1072 if (0 != (GNUNET_FS_FLAGS_PERSISTENCE & flags))
1074 deserialize_publish (ret);
1075 /* FIXME: not implemented! */
1076 // Deserialize Search:
1077 // * read search queries
1078 // * for each query, read file with search results
1079 // * for each search result with active download, deserialize download
1080 // * for each directory search result, check for active downloads of contents
1081 // Deserialize Download:
1082 // * always part of search???
1083 // Deserialize Unindex:
1084 // * read FNs for unindex with progress offset
1091 * Close our connection with the file-sharing service.
1092 * The callback given to GNUNET_FS_start will no longer be
1093 * called after this function returns.
1095 * @param h handle that was returned from GNUNET_FS_start
1098 GNUNET_FS_stop (struct GNUNET_FS_Handle *h)
1100 if (0 != (GNUNET_FS_FLAGS_PERSISTENCE & h->flags))
1102 // FIXME: generate SUSPEND events and clean up state!
1104 // FIXME: terminate receive-loop with client (do we need one?)
1105 if (h->queue_job != GNUNET_SCHEDULER_NO_TASK)
1106 GNUNET_SCHEDULER_cancel (h->sched,
1108 GNUNET_CLIENT_disconnect (h->client, GNUNET_NO);
1109 GNUNET_free (h->client_name);