2 This file is part of GNUnet.
3 (C) 2001, 2002, 2003, 2004, 2005, 2006, 2008, 2009, 2010, 2011 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 3, 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 (master initialization, serialization, deserialization, shared code)
24 * @author Christian Grothoff
28 #include "gnunet_util_lib.h"
29 #include "gnunet_fs_service.h"
34 * How many block requests can we have outstanding in parallel at a time by default?
36 #define DEFAULT_MAX_PARALLEL_REQUESTS (1024 * 10)
39 * How many downloads can we have outstanding in parallel at a time by default?
41 #define DEFAULT_MAX_PARALLEL_DOWNLOADS 16
44 * Start the given job (send signal, remove from pending queue, update
45 * counters and state).
47 * @param qe job to start
50 start_job (struct GNUNET_FS_QueueEntry *qe)
52 GNUNET_assert (NULL == qe->client);
53 qe->client = GNUNET_CLIENT_connect ("fs", qe->h->cfg);
54 if (qe->client == NULL)
59 qe->start (qe->cls, qe->client);
61 qe->h->active_blocks += qe->blocks;
62 qe->start_time = GNUNET_TIME_absolute_get ();
63 GNUNET_CONTAINER_DLL_remove (qe->h->pending_head, qe->h->pending_tail, qe);
64 GNUNET_CONTAINER_DLL_insert_after (qe->h->running_head, qe->h->running_tail,
65 qe->h->running_tail, qe);
70 * Stop the given job (send signal, remove from active queue, update
71 * counters and state).
73 * @param qe job to stop
76 stop_job (struct GNUNET_FS_QueueEntry *qe)
80 qe->h->active_downloads--;
81 qe->h->active_blocks -= qe->blocks;
83 GNUNET_TIME_relative_add (qe->run_time,
84 GNUNET_TIME_absolute_get_duration
86 GNUNET_CONTAINER_DLL_remove (qe->h->running_head, qe->h->running_tail, qe);
87 GNUNET_CONTAINER_DLL_insert_after (qe->h->pending_head, qe->h->pending_tail,
88 qe->h->pending_tail, qe);
93 * Process the jobs in the job queue, possibly starting some
94 * and stopping others.
96 * @param cls the 'struct GNUNET_FS_Handle'
97 * @param tc scheduler context
100 process_job_queue (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
102 struct GNUNET_FS_Handle *h = cls;
103 struct GNUNET_FS_QueueEntry *qe;
104 struct GNUNET_FS_QueueEntry *next;
105 struct GNUNET_TIME_Relative run_time;
106 struct GNUNET_TIME_Relative restart_at;
107 struct GNUNET_TIME_Relative rst;
108 struct GNUNET_TIME_Absolute end_time;
110 h->queue_job = GNUNET_SCHEDULER_NO_TASK;
111 restart_at = GNUNET_TIME_UNIT_FOREVER_REL;
112 /* first, see if we can start all the jobs */
113 next = h->pending_head;
114 while (NULL != (qe = next))
117 if (h->running_head == NULL)
122 if ((qe->blocks + h->active_blocks <= h->max_parallel_requests) &&
123 (h->active_downloads < h->max_parallel_downloads))
129 if (h->pending_head == NULL)
130 return; /* no need to stop anything */
131 /* then, check if we should stop some jobs */
132 next = h->running_head;
133 while (NULL != (qe = next))
137 GNUNET_TIME_relative_multiply (h->avg_block_latency,
138 qe->blocks * qe->start_times);
139 switch (qe->priority)
141 case GNUNET_FS_QUEUE_PRIORITY_PROBE:
142 /* run probes for at most 1s * number-of-restarts; note that
143 as the total runtime of a probe is limited to 2m, we don't
144 need to additionally limit the total time of a probe to
145 strictly limit its lifetime. */
146 run_time = GNUNET_TIME_relative_min (run_time,
147 GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS,
148 1 + qe->start_times));
150 case GNUNET_FS_QUEUE_PRIORITY_NORMAL:
155 end_time = GNUNET_TIME_absolute_add (qe->start_time, run_time);
156 rst = GNUNET_TIME_absolute_get_remaining (end_time);
157 restart_at = GNUNET_TIME_relative_min (rst, restart_at);
158 if (rst.rel_value > 0)
162 /* finally, start some more tasks if we now have empty slots */
163 next = h->pending_head;
164 while (NULL != (qe = next))
167 if ((qe->blocks + h->active_blocks <= h->max_parallel_requests) &&
168 (h->active_downloads < h->max_parallel_downloads))
175 GNUNET_SCHEDULER_add_delayed (restart_at, &process_job_queue, h);
180 * Add a job to the queue.
182 * @param h handle to the overall FS state
183 * @param start function to call to begin the job
184 * @param stop function to call to pause the job, or on dequeue (if the job was running)
185 * @param cls closure for start and stop
186 * @param blocks number of blocks this jobs uses
187 * @param priority how important is this download
188 * @return queue handle
190 struct GNUNET_FS_QueueEntry *
191 GNUNET_FS_queue_ (struct GNUNET_FS_Handle *h, GNUNET_FS_QueueStart start,
192 GNUNET_FS_QueueStop stop, void *cls, unsigned int blocks,
193 enum GNUNET_FS_QueuePriority priority)
195 struct GNUNET_FS_QueueEntry *qe;
197 qe = GNUNET_malloc (sizeof (struct GNUNET_FS_QueueEntry));
202 qe->queue_time = GNUNET_TIME_absolute_get ();
204 qe->priority = priority;
205 GNUNET_CONTAINER_DLL_insert_after (h->pending_head, h->pending_tail,
206 h->pending_tail, qe);
207 if (h->queue_job != GNUNET_SCHEDULER_NO_TASK)
208 GNUNET_SCHEDULER_cancel (h->queue_job);
209 h->queue_job = GNUNET_SCHEDULER_add_now (&process_job_queue, h);
215 * Dequeue a job from the queue.
216 * @param qh handle for the job
219 GNUNET_FS_dequeue_ (struct GNUNET_FS_QueueEntry *qh)
221 struct GNUNET_FS_Handle *h;
224 if (qh->client != NULL)
226 GNUNET_CONTAINER_DLL_remove (h->pending_head, h->pending_tail, qh);
228 if (h->queue_job != GNUNET_SCHEDULER_NO_TASK)
229 GNUNET_SCHEDULER_cancel (h->queue_job);
230 h->queue_job = GNUNET_SCHEDULER_add_now (&process_job_queue, h);
235 * Create a top-level activity entry.
237 * @param h global fs handle
238 * @param ssf suspend signal function to use
239 * @param ssf_cls closure for ssf
240 * @return fresh top-level activity handle
242 struct TopLevelActivity *
243 GNUNET_FS_make_top (struct GNUNET_FS_Handle *h, SuspendSignalFunction ssf,
246 struct TopLevelActivity *ret;
248 ret = GNUNET_malloc (sizeof (struct TopLevelActivity));
250 ret->ssf_cls = ssf_cls;
251 GNUNET_CONTAINER_DLL_insert (h->top_head, h->top_tail, ret);
257 * Destroy a top-level activity entry.
259 * @param h global fs handle
260 * @param top top level activity entry
263 GNUNET_FS_end_top (struct GNUNET_FS_Handle *h, struct TopLevelActivity *top)
265 GNUNET_CONTAINER_DLL_remove (h->top_head, h->top_tail, top);
272 * Closure for "data_reader_file".
277 * Name of the file to read.
282 * File descriptor, NULL if it has not yet been opened.
284 struct GNUNET_DISK_FileHandle *fd;
289 * Function that provides data by reading from a file.
291 * @param cls closure (points to the file information)
292 * @param offset offset to read from; it is possible
293 * that the caller might need to go backwards
295 * @param max maximum number of bytes that should be
296 * copied to buf; readers are not allowed
297 * to provide less data unless there is an error;
298 * a value of "0" will be used at the end to allow
299 * the reader to clean up its internal state
300 * @param buf where the reader should write the data
301 * @param emsg location for the reader to store an error message
302 * @return number of bytes written, usually "max", 0 on error
305 GNUNET_FS_data_reader_file_ (void *cls, uint64_t offset, size_t max, void *buf,
308 struct FileInfo *fi = cls;
314 GNUNET_DISK_file_close (fi->fd);
315 GNUNET_free (fi->filename);
322 GNUNET_DISK_file_open (fi->filename, GNUNET_DISK_OPEN_READ,
323 GNUNET_DISK_PERM_NONE);
326 GNUNET_asprintf (emsg, _("Could not open file `%s': %s"), fi->filename,
331 GNUNET_DISK_file_seek (fi->fd, offset, GNUNET_DISK_SEEK_SET);
332 ret = GNUNET_DISK_file_read (fi->fd, buf, max);
335 GNUNET_asprintf (emsg, _("Could not read file `%s': %s"), fi->filename,
341 GNUNET_asprintf (emsg, _("Short read reading from file `%s'!"),
350 * Create the closure for the 'GNUNET_FS_data_reader_file_' callback.
352 * @param filename file to read
353 * @return closure to use, NULL on error
356 GNUNET_FS_make_file_reader_context_ (const char *filename)
360 fi = GNUNET_malloc (sizeof (struct FileInfo));
361 fi->filename = GNUNET_STRINGS_filename_expand (filename);
362 if (fi->filename == NULL)
372 * Function that provides data by copying from a buffer.
374 * @param cls closure (points to the buffer)
375 * @param offset offset to read from; it is possible
376 * that the caller might need to go backwards
378 * @param max maximum number of bytes that should be
379 * copied to buf; readers are not allowed
380 * to provide less data unless there is an error;
381 * a value of "0" will be used at the end to allow
382 * the reader to clean up its internal state
383 * @param buf where the reader should write the data
384 * @param emsg location for the reader to store an error message
385 * @return number of bytes written, usually "max", 0 on error
388 GNUNET_FS_data_reader_copy_ (void *cls, uint64_t offset, size_t max, void *buf,
395 GNUNET_free_non_null (data);
398 memcpy (buf, &data[offset], max);
404 * Return the full filename where we would store state information
405 * (for serialization/deserialization).
407 * @param h master context
408 * @param ext component of the path
409 * @param ent entity identifier (or emtpy string for the directory)
410 * @return NULL on error
413 get_serialization_file_name (struct GNUNET_FS_Handle *h, const char *ext,
419 if (0 == (h->flags & GNUNET_FS_FLAGS_PERSISTENCE))
420 return NULL; /* persistence not requested */
422 GNUNET_CONFIGURATION_get_value_filename (h->cfg, "fs", "STATE_DIR",
425 GNUNET_asprintf (&ret, "%s%s%s%s%s%s%s", basename, DIR_SEPARATOR_STR,
426 h->client_name, DIR_SEPARATOR_STR, ext, DIR_SEPARATOR_STR,
428 GNUNET_free (basename);
434 * Return the full filename where we would store state information
435 * (for serialization/deserialization) that is associated with a
438 * @param h master context
439 * @param ext component of the path
440 * @param uni name of the parent operation
441 * @param ent entity identifier (or emtpy string for the directory)
442 * @return NULL on error
445 get_serialization_file_name_in_dir (struct GNUNET_FS_Handle *h, const char *ext,
446 const char *uni, const char *ent)
451 if (0 == (h->flags & GNUNET_FS_FLAGS_PERSISTENCE))
452 return NULL; /* persistence not requested */
454 GNUNET_CONFIGURATION_get_value_filename (h->cfg, "fs", "STATE_DIR",
457 GNUNET_asprintf (&ret, "%s%s%s%s%s%s%s.dir%s%s", basename, DIR_SEPARATOR_STR,
458 h->client_name, DIR_SEPARATOR_STR, ext, DIR_SEPARATOR_STR,
459 uni, DIR_SEPARATOR_STR, ent);
460 GNUNET_free (basename);
466 * Return a read handle for deserialization.
468 * @param h master context
469 * @param ext component of the path
470 * @param ent entity identifier (or emtpy string for the directory)
471 * @return NULL on error
473 static struct GNUNET_BIO_ReadHandle *
474 get_read_handle (struct GNUNET_FS_Handle *h, const char *ext, const char *ent)
477 struct GNUNET_BIO_ReadHandle *ret;
479 fn = get_serialization_file_name (h, ext, ent);
482 ret = GNUNET_BIO_read_open (fn);
489 * Return a write handle for serialization.
491 * @param h master context
492 * @param ext component of the path
493 * @param ent entity identifier (or emtpy string for the directory)
494 * @return NULL on error
496 static struct GNUNET_BIO_WriteHandle *
497 get_write_handle (struct GNUNET_FS_Handle *h, const char *ext, const char *ent)
500 struct GNUNET_BIO_WriteHandle *ret;
502 fn = get_serialization_file_name (h, ext, ent);
507 ret = GNUNET_BIO_write_open (fn);
516 * Return a write handle for serialization.
518 * @param h master context
519 * @param ext component of the path
520 * @param uni name of parent
521 * @param ent entity identifier (or emtpy string for the directory)
522 * @return NULL on error
524 static struct GNUNET_BIO_WriteHandle *
525 get_write_handle_in_dir (struct GNUNET_FS_Handle *h, const char *ext,
526 const char *uni, const char *ent)
529 struct GNUNET_BIO_WriteHandle *ret;
531 fn = get_serialization_file_name_in_dir (h, ext, uni, ent);
534 ret = GNUNET_BIO_write_open (fn);
541 * Remove serialization/deserialization file from disk.
543 * @param h master context
544 * @param ext component of the path
545 * @param ent entity identifier
548 GNUNET_FS_remove_sync_file_ (struct GNUNET_FS_Handle *h, const char *ext,
553 if ((NULL == ent) || (0 == strlen (ent)))
558 filename = get_serialization_file_name (h, ext, ent);
559 if (filename != NULL)
561 if (0 != UNLINK (filename))
562 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", filename);
563 GNUNET_free (filename);
569 * Remove serialization/deserialization file from disk.
571 * @param h master context
572 * @param ext component of the path
573 * @param uni parent name
574 * @param ent entity identifier
577 remove_sync_file_in_dir (struct GNUNET_FS_Handle *h, const char *ext,
578 const char *uni, const char *ent)
582 if ((NULL == ent) || (0 == strlen (ent)))
587 filename = get_serialization_file_name_in_dir (h, ext, uni, ent);
588 if (filename != NULL)
590 if (0 != UNLINK (filename))
591 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", filename);
592 GNUNET_free (filename);
598 * Remove serialization/deserialization directory from disk.
600 * @param h master context
601 * @param ext component of the path
602 * @param uni unique name of parent
605 GNUNET_FS_remove_sync_dir_ (struct GNUNET_FS_Handle *h, const char *ext,
612 dn = get_serialization_file_name_in_dir (h, ext, uni, "");
615 if ((GNUNET_OK == GNUNET_DISK_directory_test (dn)) &&
616 (GNUNET_OK != GNUNET_DISK_directory_remove (dn)))
617 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "rmdir", dn);
623 * Serialize a 'start_time'. Since we use start-times to
624 * calculate the duration of some operation, we actually
625 * do not serialize the absolute time but the (relative)
626 * duration since the start time. When we then
627 * deserialize the start time, we take the current time and
628 * subtract that duration so that we get again an absolute
629 * time stamp that will result in correct performance
632 * @param wh handle for writing
633 * @param timestamp time to serialize
634 * @return GNUNET_OK on success
637 write_start_time (struct GNUNET_BIO_WriteHandle *wh,
638 struct GNUNET_TIME_Absolute timestamp)
640 struct GNUNET_TIME_Relative dur;
642 dur = GNUNET_TIME_absolute_get_duration (timestamp);
643 return GNUNET_BIO_write_int64 (wh, dur.rel_value);
648 * Serialize a 'start_time'. Since we use start-times to
649 * calculate the duration of some operation, we actually
650 * do not serialize the absolute time but the (relative)
651 * duration since the start time. When we then
652 * deserialize the start time, we take the current time and
653 * subtract that duration so that we get again an absolute
654 * time stamp that will result in correct performance
657 * @param rh handle for reading
658 * @param timestamp where to write the deserialized timestamp
659 * @return GNUNET_OK on success
662 read_start_time (struct GNUNET_BIO_ReadHandle *rh,
663 struct GNUNET_TIME_Absolute *timestamp)
665 struct GNUNET_TIME_Relative dur;
667 if (GNUNET_OK != GNUNET_BIO_read_int64 (rh, &dur.rel_value))
668 return GNUNET_SYSERR;
669 *timestamp = GNUNET_TIME_absolute_subtract (GNUNET_TIME_absolute_get (), dur);
675 * Using the given serialization filename, try to deserialize
676 * the file-information tree associated with it.
678 * @param h master context
679 * @param filename name of the file (without directory) with
681 * @return NULL on error
683 static struct GNUNET_FS_FileInformation *
684 deserialize_file_information (struct GNUNET_FS_Handle *h, const char *filename);
688 * Using the given serialization filename, try to deserialize
689 * the file-information tree associated with it.
691 * @param h master context
692 * @param fn name of the file (without directory) with
694 * @param rh handle for reading
695 * @return NULL on error
697 static struct GNUNET_FS_FileInformation *
698 deserialize_fi_node (struct GNUNET_FS_Handle *h, const char *fn,
699 struct GNUNET_BIO_ReadHandle *rh)
701 struct GNUNET_FS_FileInformation *ret;
702 struct GNUNET_FS_FileInformation *nxt;
709 if (GNUNET_OK != GNUNET_BIO_read (rh, "status flag", &b, sizeof (b)))
714 ret = GNUNET_malloc (sizeof (struct GNUNET_FS_FileInformation));
719 if ((GNUNET_OK != GNUNET_BIO_read_meta_data (rh, "metadata", &ret->meta)) ||
720 (GNUNET_OK != GNUNET_BIO_read_string (rh, "ksk-uri", &ksks, 32 * 1024)) ||
722 ( (NULL == (ret->keywords = GNUNET_FS_uri_parse (ksks, NULL))) ||
723 (GNUNET_YES != GNUNET_FS_uri_test_ksk (ret->keywords)) ) ) ||
724 (GNUNET_OK != GNUNET_BIO_read_string (rh, "chk-uri", &chks, 1024)) ||
726 ( (NULL == (ret->chk_uri = GNUNET_FS_uri_parse (chks, NULL))) ||
727 (GNUNET_YES != GNUNET_FS_uri_test_chk (ret->chk_uri))) ) ||
728 (GNUNET_OK != read_start_time (rh, &ret->start_time)) ||
729 (GNUNET_OK != GNUNET_BIO_read_string (rh, "emsg", &ret->emsg, 16 * 1024))
731 GNUNET_BIO_read_string (rh, "fn", &ret->filename, 16 * 1024)) ||
733 GNUNET_BIO_read_int64 (rh, &ret->bo.expiration_time.abs_value)) ||
734 (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &ret->bo.anonymity_level)) ||
735 (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &ret->bo.content_priority)) ||
736 (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &ret->bo.replication_level)))
743 case 0: /* file-insert */
744 if (GNUNET_OK != GNUNET_BIO_read_int64 (rh, &ret->data.file.file_size))
749 ret->is_directory = GNUNET_NO;
750 ret->data.file.do_index = GNUNET_NO;
751 ret->data.file.have_hash = GNUNET_NO;
752 ret->data.file.index_start_confirmed = GNUNET_NO;
753 if (GNUNET_NO == ret->is_published)
755 if (NULL == ret->filename)
757 ret->data.file.reader = &GNUNET_FS_data_reader_copy_;
758 ret->data.file.reader_cls =
759 GNUNET_malloc_large (ret->data.file.file_size);
760 if (ret->data.file.reader_cls == NULL)
763 GNUNET_BIO_read (rh, "file-data", ret->data.file.reader_cls,
764 ret->data.file.file_size))
772 ret->data.file.reader = &GNUNET_FS_data_reader_file_;
773 ret->data.file.reader_cls =
774 GNUNET_FS_make_file_reader_context_ (ret->filename);
778 case 1: /* file-index, no hash */
779 if (NULL == ret->filename)
784 if (GNUNET_OK != GNUNET_BIO_read_int64 (rh, &ret->data.file.file_size))
789 ret->is_directory = GNUNET_NO;
790 ret->data.file.do_index = GNUNET_YES;
791 ret->data.file.have_hash = GNUNET_NO;
792 ret->data.file.index_start_confirmed = GNUNET_NO;
793 ret->data.file.reader = &GNUNET_FS_data_reader_file_;
794 ret->data.file.reader_cls =
795 GNUNET_FS_make_file_reader_context_ (ret->filename);
797 case 2: /* file-index-with-hash */
798 if (NULL == ret->filename)
803 if ((GNUNET_OK != GNUNET_BIO_read_int64 (rh, &ret->data.file.file_size)) ||
805 GNUNET_BIO_read (rh, "fileid", &ret->data.file.file_id,
806 sizeof (GNUNET_HashCode))))
811 ret->is_directory = GNUNET_NO;
812 ret->data.file.do_index = GNUNET_YES;
813 ret->data.file.have_hash = GNUNET_YES;
814 ret->data.file.index_start_confirmed = GNUNET_NO;
815 ret->data.file.reader = &GNUNET_FS_data_reader_file_;
816 ret->data.file.reader_cls =
817 GNUNET_FS_make_file_reader_context_ (ret->filename);
819 case 3: /* file-index-with-hash-confirmed */
820 if (NULL == ret->filename)
825 if ((GNUNET_OK != GNUNET_BIO_read_int64 (rh, &ret->data.file.file_size)) ||
827 GNUNET_BIO_read (rh, "fileid", &ret->data.file.file_id,
828 sizeof (GNUNET_HashCode))))
833 ret->is_directory = GNUNET_NO;
834 ret->data.file.do_index = GNUNET_YES;
835 ret->data.file.have_hash = GNUNET_YES;
836 ret->data.file.index_start_confirmed = GNUNET_YES;
837 ret->data.file.reader = &GNUNET_FS_data_reader_file_;
838 ret->data.file.reader_cls =
839 GNUNET_FS_make_file_reader_context_ (ret->filename);
841 case 4: /* directory */
842 ret->is_directory = GNUNET_YES;
843 if ((GNUNET_OK != GNUNET_BIO_read_int32 (rh, &dsize)) ||
844 (NULL == (ret->data.dir.dir_data = GNUNET_malloc_large (dsize))) ||
846 GNUNET_BIO_read (rh, "dir-data", ret->data.dir.dir_data, dsize)) ||
848 GNUNET_BIO_read_string (rh, "ent-filename", &filename, 16 * 1024)))
853 ret->data.dir.dir_size = (uint32_t) dsize;
854 if (filename != NULL)
856 ret->data.dir.entries = deserialize_file_information (h, filename);
857 GNUNET_free (filename);
859 nxt = ret->data.dir.entries;
871 ret->serialization = GNUNET_strdup (fn);
873 GNUNET_BIO_read_string (rh, "nxt-filename", &filename, 16 * 1024))
878 if (filename != NULL)
880 ret->next = deserialize_file_information (h, filename);
881 GNUNET_free (filename);
884 GNUNET_free_non_null (ksks);
885 GNUNET_free_non_null (chks);
888 GNUNET_free_non_null (ksks);
889 GNUNET_free_non_null (chks);
890 GNUNET_free_non_null (filename);
891 GNUNET_FS_file_information_destroy (ret, NULL, NULL);
897 * Using the given serialization filename, try to deserialize
898 * the file-information tree associated with it.
900 * @param h master context
901 * @param filename name of the file (without directory) with
903 * @return NULL on error
905 static struct GNUNET_FS_FileInformation *
906 deserialize_file_information (struct GNUNET_FS_Handle *h, const char *filename)
908 struct GNUNET_FS_FileInformation *ret;
909 struct GNUNET_BIO_ReadHandle *rh;
912 rh = get_read_handle (h, GNUNET_FS_SYNC_PATH_FILE_INFO, filename);
915 ret = deserialize_fi_node (h, filename, rh);
916 if (GNUNET_OK != GNUNET_BIO_read_close (rh, &emsg))
918 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
919 _("Failed to resume publishing information `%s': %s\n"),
925 if (0 != UNLINK (filename))
926 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", filename);
933 * Given a serialization name (full absolute path), return the
934 * basename of the file (without the path), which must only
935 * consist of the 6 random characters.
937 * @param fullname name to extract the basename from
938 * @return copy of the basename, NULL on error
941 get_serialization_short_name (const char *fullname)
948 /* FIXME: we could do this faster since we know
949 * the length of 'end'... */
952 if (DIR_SEPARATOR == *nxt)
956 if ((end == NULL) || (strlen (end) == 0))
961 GNUNET_break (6 == strlen (end));
962 return GNUNET_strdup (end);
967 * Create a new random name for serialization. Also checks if persistence
968 * is enabled and returns NULL if not.
970 * @param h master context
971 * @param ext component of the path
972 * @return NULL on errror
975 make_serialization_file_name (struct GNUNET_FS_Handle *h, const char *ext)
981 if (0 == (h->flags & GNUNET_FS_FLAGS_PERSISTENCE))
982 return NULL; /* persistence not requested */
983 dn = get_serialization_file_name (h, ext, "");
986 if (GNUNET_OK != GNUNET_DISK_directory_create_for_file (dn))
991 fn = GNUNET_DISK_mktemp (dn);
994 return NULL; /* epic fail */
995 ret = get_serialization_short_name (fn);
1002 * Create a new random name for serialization. Also checks if persistence
1003 * is enabled and returns NULL if not.
1005 * @param h master context
1006 * @param ext component of the path
1007 * @param uni name of parent
1008 * @return NULL on errror
1011 make_serialization_file_name_in_dir (struct GNUNET_FS_Handle *h,
1012 const char *ext, const char *uni)
1018 if (0 == (h->flags & GNUNET_FS_FLAGS_PERSISTENCE))
1019 return NULL; /* persistence not requested */
1020 dn = get_serialization_file_name_in_dir (h, ext, uni, "");
1023 if (GNUNET_OK != GNUNET_DISK_directory_create_for_file (dn))
1028 fn = GNUNET_DISK_mktemp (dn);
1031 return NULL; /* epic fail */
1032 ret = get_serialization_short_name (fn);
1039 * Copy all of the data from the reader to the write handle.
1041 * @param wh write handle
1042 * @param fi file with reader
1043 * @return GNUNET_OK on success
1046 copy_from_reader (struct GNUNET_BIO_WriteHandle *wh,
1047 struct GNUNET_FS_FileInformation *fi)
1049 char buf[32 * 1024];
1057 while (off < fi->data.file.file_size)
1059 left = GNUNET_MIN (sizeof (buf), fi->data.file.file_size - off);
1061 fi->data.file.reader (fi->data.file.reader_cls, off, left, buf, &emsg);
1065 return GNUNET_SYSERR;
1067 if (GNUNET_OK != GNUNET_BIO_write (wh, buf, ret))
1068 return GNUNET_SYSERR;
1076 * Create a temporary file on disk to store the current
1079 * @param fi file information to sync with disk
1082 GNUNET_FS_file_information_sync_ (struct GNUNET_FS_FileInformation *fi)
1085 struct GNUNET_BIO_WriteHandle *wh;
1090 if (NULL == fi->serialization)
1092 make_serialization_file_name (fi->h, GNUNET_FS_SYNC_PATH_FILE_INFO);
1093 if (NULL == fi->serialization)
1095 wh = get_write_handle (fi->h, GNUNET_FS_SYNC_PATH_FILE_INFO,
1099 GNUNET_free (fi->serialization);
1100 fi->serialization = NULL;
1103 if (GNUNET_YES == fi->is_directory)
1105 else if (GNUNET_YES == fi->data.file.index_start_confirmed)
1107 else if (GNUNET_YES == fi->data.file.have_hash)
1109 else if (GNUNET_YES == fi->data.file.do_index)
1113 if (fi->keywords != NULL)
1114 ksks = GNUNET_FS_uri_to_string (fi->keywords);
1117 if (fi->chk_uri != NULL)
1118 chks = GNUNET_FS_uri_to_string (fi->chk_uri);
1121 if ((GNUNET_OK != GNUNET_BIO_write (wh, &b, sizeof (b))) ||
1122 (GNUNET_OK != GNUNET_BIO_write_meta_data (wh, fi->meta)) ||
1123 (GNUNET_OK != GNUNET_BIO_write_string (wh, ksks)) ||
1124 (GNUNET_OK != GNUNET_BIO_write_string (wh, chks)) ||
1125 (GNUNET_OK != write_start_time (wh, fi->start_time)) ||
1126 (GNUNET_OK != GNUNET_BIO_write_string (wh, fi->emsg)) ||
1127 (GNUNET_OK != GNUNET_BIO_write_string (wh, fi->filename)) ||
1129 GNUNET_BIO_write_int64 (wh, fi->bo.expiration_time.abs_value)) ||
1130 (GNUNET_OK != GNUNET_BIO_write_int32 (wh, fi->bo.anonymity_level)) ||
1131 (GNUNET_OK != GNUNET_BIO_write_int32 (wh, fi->bo.content_priority)) ||
1132 (GNUNET_OK != GNUNET_BIO_write_int32 (wh, fi->bo.replication_level)))
1137 GNUNET_free_non_null (chks);
1139 GNUNET_free_non_null (ksks);
1144 case 0: /* file-insert */
1145 if (GNUNET_OK != GNUNET_BIO_write_int64 (wh, fi->data.file.file_size))
1150 if ((GNUNET_NO == fi->is_published) && (NULL == fi->filename))
1151 if (GNUNET_OK != copy_from_reader (wh, fi))
1157 case 1: /* file-index, no hash */
1158 if (NULL == fi->filename)
1163 if (GNUNET_OK != GNUNET_BIO_write_int64 (wh, fi->data.file.file_size))
1169 case 2: /* file-index-with-hash */
1170 case 3: /* file-index-with-hash-confirmed */
1171 if (NULL == fi->filename)
1176 if ((GNUNET_OK != GNUNET_BIO_write_int64 (wh, fi->data.file.file_size)) ||
1178 GNUNET_BIO_write (wh, &fi->data.file.file_id,
1179 sizeof (GNUNET_HashCode))))
1185 case 4: /* directory */
1186 if ((GNUNET_OK != GNUNET_BIO_write_int32 (wh, fi->data.dir.dir_size)) ||
1188 GNUNET_BIO_write (wh, fi->data.dir.dir_data,
1189 (uint32_t) fi->data.dir.dir_size)) ||
1191 GNUNET_BIO_write_string (wh,
1192 (fi->data.dir.entries ==
1193 NULL) ? NULL : fi->data.dir.
1194 entries->serialization)))
1205 GNUNET_BIO_write_string (wh,
1207 NULL) ? fi->next->serialization : NULL))
1212 if (GNUNET_OK != GNUNET_BIO_write_close (wh))
1221 (void) GNUNET_BIO_write_close (wh);
1222 GNUNET_free_non_null (chks);
1223 GNUNET_free_non_null (ksks);
1224 fn = get_serialization_file_name (fi->h, GNUNET_FS_SYNC_PATH_FILE_INFO,
1228 if (0 != UNLINK (fn))
1229 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", fn);
1232 GNUNET_free (fi->serialization);
1233 fi->serialization = NULL;
1239 * Find the entry in the file information struct where the
1240 * serialization filename matches the given name.
1242 * @param pos file information to search
1243 * @param srch filename to search for
1244 * @return NULL if srch was not found in this subtree
1246 static struct GNUNET_FS_FileInformation *
1247 find_file_position (struct GNUNET_FS_FileInformation *pos, const char *srch)
1249 struct GNUNET_FS_FileInformation *r;
1253 if (0 == strcmp (srch, pos->serialization))
1255 if (pos->is_directory == GNUNET_YES)
1257 r = find_file_position (pos->data.dir.entries, srch);
1268 * Signal the FS's progress function that we are resuming
1271 * @param cls closure (of type "struct GNUNET_FS_PublishContext*")
1272 * @param fi the entry in the publish-structure
1273 * @param length length of the file or directory
1274 * @param meta metadata for the file or directory (can be modified)
1275 * @param uri pointer to the keywords that will be used for this entry (can be modified)
1276 * @param bo block options (can be modified)
1277 * @param do_index should we index?
1278 * @param client_info pointer to client context set upon creation (can be modified)
1279 * @return GNUNET_OK to continue (always)
1282 fip_signal_resume (void *cls, struct GNUNET_FS_FileInformation *fi,
1283 uint64_t length, struct GNUNET_CONTAINER_MetaData *meta,
1284 struct GNUNET_FS_Uri **uri,
1285 struct GNUNET_FS_BlockOptions *bo, int *do_index,
1288 struct GNUNET_FS_PublishContext *pc = cls;
1289 struct GNUNET_FS_ProgressInfo pi;
1291 if (GNUNET_YES == pc->skip_next_fi_callback)
1293 pc->skip_next_fi_callback = GNUNET_NO;
1296 pi.status = GNUNET_FS_STATUS_PUBLISH_RESUME;
1297 pi.value.publish.specifics.resume.message = pc->fi->emsg;
1298 pi.value.publish.specifics.resume.chk_uri = pc->fi->chk_uri;
1299 *client_info = GNUNET_FS_publish_make_status_ (&pi, pc, fi, 0);
1300 if (GNUNET_YES == GNUNET_FS_meta_data_test_for_directory (meta))
1302 /* process entries in directory */
1303 pc->skip_next_fi_callback = GNUNET_YES;
1304 GNUNET_FS_file_information_inspect (fi, &fip_signal_resume, pc);
1311 * Function called with a filename of serialized publishing operation
1314 * @param cls the 'struct GNUNET_FS_Handle*'
1315 * @param filename complete filename (absolute path)
1316 * @return GNUNET_OK (continue to iterate)
1319 deserialize_publish_file (void *cls, const char *filename)
1321 struct GNUNET_FS_Handle *h = cls;
1322 struct GNUNET_BIO_ReadHandle *rh;
1323 struct GNUNET_FS_PublishContext *pc;
1331 pc = GNUNET_malloc (sizeof (struct GNUNET_FS_PublishContext));
1333 pc->serialization = get_serialization_short_name (filename);
1337 rh = GNUNET_BIO_read_open (filename);
1343 if ((GNUNET_OK != GNUNET_BIO_read_string (rh, "publish-nid", &pc->nid, 1024))
1345 GNUNET_BIO_read_string (rh, "publish-nuid", &pc->nuid, 1024)) ||
1346 (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &options)) ||
1347 (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &all_done)) ||
1349 GNUNET_BIO_read_string (rh, "publish-firoot", &fi_root, 128)) ||
1350 (GNUNET_OK != GNUNET_BIO_read_string (rh, "publish-fipos", &fi_pos, 128))
1351 || (GNUNET_OK != GNUNET_BIO_read_string (rh, "publish-ns", &ns, 1024)))
1356 pc->options = options;
1357 pc->all_done = all_done;
1358 if (NULL == fi_root)
1363 pc->fi = deserialize_file_information (h, fi_root);
1371 pc->namespace = GNUNET_FS_namespace_create (h, ns);
1372 if (pc->namespace == NULL)
1374 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1376 ("Failed to recover namespace `%s', cannot resume publishing operation.\n"),
1381 if ((0 == (pc->options & GNUNET_FS_PUBLISH_OPTION_SIMULATE_ONLY)) &&
1382 (GNUNET_YES != pc->all_done))
1384 pc->dsh = GNUNET_DATASTORE_connect (h->cfg);
1385 if (NULL == pc->dsh)
1390 pc->fi_pos = find_file_position (pc->fi, fi_pos);
1391 GNUNET_free (fi_pos);
1393 if (pc->fi_pos == NULL)
1395 /* failed to find position for resuming, outch! Will start from root! */
1397 if (pc->all_done != GNUNET_YES)
1398 pc->fi_pos = pc->fi;
1401 GNUNET_free (fi_root);
1403 /* generate RESUME event(s) */
1404 GNUNET_FS_file_information_inspect (pc->fi, &fip_signal_resume, pc);
1406 /* re-start publishing (if needed)... */
1407 if (pc->all_done != GNUNET_YES)
1409 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == pc->upload_task);
1411 GNUNET_SCHEDULER_add_with_priority
1412 (GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
1413 &GNUNET_FS_publish_main_, pc);
1415 if (GNUNET_OK != GNUNET_BIO_read_close (rh, &emsg))
1417 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1418 _("Failure while resuming publishing operation `%s': %s\n"),
1422 GNUNET_free_non_null (ns);
1423 pc->top = GNUNET_FS_make_top (h, &GNUNET_FS_publish_signal_suspend_, pc);
1426 GNUNET_free_non_null (pc->nid);
1427 GNUNET_free_non_null (pc->nuid);
1428 GNUNET_free_non_null (fi_root);
1429 GNUNET_free_non_null (fi_pos);
1430 GNUNET_free_non_null (ns);
1431 if ((rh != NULL) && (GNUNET_OK != GNUNET_BIO_read_close (rh, &emsg)))
1433 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1434 _("Failed to resume publishing operation `%s': %s\n"), filename,
1439 GNUNET_FS_file_information_destroy (pc->fi, NULL, NULL);
1440 if (0 != UNLINK (filename))
1441 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", filename);
1442 GNUNET_free (pc->serialization);
1449 * Synchronize this publishing struct with its mirror
1450 * on disk. Note that all internal FS-operations that change
1451 * publishing structs should already call "sync" internally,
1452 * so this function is likely not useful for clients.
1454 * @param pc the struct to sync
1457 GNUNET_FS_publish_sync_ (struct GNUNET_FS_PublishContext *pc)
1459 struct GNUNET_BIO_WriteHandle *wh;
1461 if (NULL == pc->serialization)
1463 make_serialization_file_name (pc->h,
1464 GNUNET_FS_SYNC_PATH_MASTER_PUBLISH);
1465 if (NULL == pc->serialization)
1469 if (NULL == pc->fi->serialization)
1474 wh = get_write_handle (pc->h, GNUNET_FS_SYNC_PATH_MASTER_PUBLISH,
1481 if ((GNUNET_OK != GNUNET_BIO_write_string (wh, pc->nid)) ||
1482 (GNUNET_OK != GNUNET_BIO_write_string (wh, pc->nuid)) ||
1483 (GNUNET_OK != GNUNET_BIO_write_int32 (wh, pc->options)) ||
1484 (GNUNET_OK != GNUNET_BIO_write_int32 (wh, pc->all_done)) ||
1485 (GNUNET_OK != GNUNET_BIO_write_string (wh, pc->fi->serialization)) ||
1487 GNUNET_BIO_write_string (wh,
1489 NULL) ? NULL : pc->fi_pos->serialization)) ||
1491 GNUNET_BIO_write_string (wh,
1493 NULL) ? NULL : pc->namespace->name)))
1498 if (GNUNET_OK != GNUNET_BIO_write_close (wh))
1507 (void) GNUNET_BIO_write_close (wh);
1508 GNUNET_FS_remove_sync_file_ (pc->h, GNUNET_FS_SYNC_PATH_MASTER_PUBLISH,
1510 GNUNET_free (pc->serialization);
1511 pc->serialization = NULL;
1516 * Synchronize this unindex struct with its mirror
1517 * on disk. Note that all internal FS-operations that change
1518 * publishing structs should already call "sync" internally,
1519 * so this function is likely not useful for clients.
1521 * @param uc the struct to sync
1524 GNUNET_FS_unindex_sync_ (struct GNUNET_FS_UnindexContext *uc)
1526 struct GNUNET_BIO_WriteHandle *wh;
1529 if (NULL == uc->serialization)
1531 make_serialization_file_name (uc->h,
1532 GNUNET_FS_SYNC_PATH_MASTER_UNINDEX);
1533 if (NULL == uc->serialization)
1535 wh = get_write_handle (uc->h, GNUNET_FS_SYNC_PATH_MASTER_UNINDEX,
1542 uris = GNUNET_FS_uri_to_string (uc->ksk_uri);
1543 if ((GNUNET_OK != GNUNET_BIO_write_string (wh, uc->filename)) ||
1544 (GNUNET_OK != GNUNET_BIO_write_int64 (wh, uc->file_size)) ||
1545 (GNUNET_OK != write_start_time (wh, uc->start_time)) ||
1546 (GNUNET_OK != GNUNET_BIO_write_int32 (wh, (uint32_t) uc->state)) ||
1548 GNUNET_BIO_write (wh, &uc->chk, sizeof (struct ContentHashKey))) ||
1549 (GNUNET_OK != GNUNET_BIO_write_string (wh, uris)) ||
1550 (GNUNET_OK != GNUNET_BIO_write_int32 (wh, (uint32_t) uc->ksk_offset)) ||
1551 ((uc->state == UNINDEX_STATE_FS_NOTIFY) &&
1553 GNUNET_BIO_write (wh, &uc->file_id, sizeof (GNUNET_HashCode)))) ||
1554 ((uc->state == UNINDEX_STATE_ERROR) &&
1555 (GNUNET_OK != GNUNET_BIO_write_string (wh, uc->emsg))))
1560 if (GNUNET_OK != GNUNET_BIO_write_close (wh))
1569 (void) GNUNET_BIO_write_close (wh);
1570 GNUNET_FS_remove_sync_file_ (uc->h, GNUNET_FS_SYNC_PATH_MASTER_UNINDEX,
1572 GNUNET_free (uc->serialization);
1573 uc->serialization = NULL;
1578 * Serialize a download request.
1580 * @param wh the 'struct GNUNET_BIO_WriteHandle*'
1581 * @param dr the 'struct DownloadRequest'
1582 * @return GNUNET_YES on success, GNUNET_NO on error
1585 write_download_request (struct GNUNET_BIO_WriteHandle *wh,
1586 struct DownloadRequest *dr)
1590 if ((GNUNET_OK != GNUNET_BIO_write_int32 (wh, dr->state)) ||
1591 (GNUNET_OK != GNUNET_BIO_write_int64 (wh, dr->offset)) ||
1592 (GNUNET_OK != GNUNET_BIO_write_int32 (wh, dr->num_children)) ||
1593 (GNUNET_OK != GNUNET_BIO_write_int32 (wh, dr->depth)))
1595 if ((dr->state == BRS_CHK_SET) &&
1597 GNUNET_BIO_write (wh, &dr->chk, sizeof (struct ContentHashKey))))
1599 for (i = 0; i < dr->num_children; i++)
1600 if (GNUNET_NO == write_download_request (wh, dr->children[i]))
1607 * Read a download request tree.
1609 * @param rh stream to read from
1610 * @return value the 'struct DownloadRequest', NULL on error
1612 static struct DownloadRequest *
1613 read_download_request (struct GNUNET_BIO_ReadHandle *rh)
1615 struct DownloadRequest *dr;
1618 dr = GNUNET_malloc (sizeof (struct DownloadRequest));
1620 if ((GNUNET_OK != GNUNET_BIO_read_int32 (rh, &dr->state)) ||
1621 (GNUNET_OK != GNUNET_BIO_read_int64 (rh, &dr->offset)) ||
1622 (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &dr->num_children)) ||
1623 (dr->num_children > CHK_PER_INODE) ||
1624 (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &dr->depth)) || ((dr->depth == 0)
1628 ((dr->depth > 0) && (dr->num_children == 0)))
1631 dr->num_children = 0;
1634 if (dr->num_children > 0)
1636 GNUNET_malloc (dr->num_children * sizeof (struct ContentHashKey));
1640 case BRS_RECONSTRUCT_DOWN:
1641 case BRS_RECONSTRUCT_META_UP:
1642 case BRS_RECONSTRUCT_UP:
1646 GNUNET_BIO_read (rh, "chk", &dr->chk, sizeof (struct ContentHashKey)))
1649 case BRS_DOWNLOAD_DOWN:
1650 case BRS_DOWNLOAD_UP:
1657 for (i = 0; i < dr->num_children; i++)
1659 if (NULL == (dr->children[i] = read_download_request (rh)))
1661 dr->children[i]->parent = dr;
1665 GNUNET_FS_free_download_request_ (dr);
1671 * Compute the name of the sync file (or directory) for the given download
1674 * @param dc download context to compute for
1675 * @param uni unique filename to use, use "" for the directory name
1676 * @param ext extension to use, use ".dir" for our own subdirectory
1677 * @return the expanded file name, NULL for none
1680 get_download_sync_filename (struct GNUNET_FS_DownloadContext *dc,
1681 const char *uni, const char *ext)
1686 if (dc->parent == NULL)
1687 return get_serialization_file_name (dc->h,
1690 GNUNET_FS_SYNC_PATH_CHILD_DOWNLOAD :
1691 GNUNET_FS_SYNC_PATH_MASTER_DOWNLOAD,
1693 if (dc->parent->serialization == NULL)
1695 par = get_download_sync_filename (dc->parent, dc->parent->serialization, "");
1698 GNUNET_asprintf (&epar, "%s.dir%s%s%s", par, DIR_SEPARATOR_STR, uni, ext);
1705 * Synchronize this download struct with its mirror
1706 * on disk. Note that all internal FS-operations that change
1707 * publishing structs should already call "sync" internally,
1708 * so this function is likely not useful for clients.
1710 * @param dc the struct to sync
1713 GNUNET_FS_download_sync_ (struct GNUNET_FS_DownloadContext *dc)
1715 struct GNUNET_BIO_WriteHandle *wh;
1720 if (0 != (dc->options & GNUNET_FS_DOWNLOAD_IS_PROBE))
1721 return; /* we don't sync probes */
1722 if (NULL == dc->serialization)
1724 dir = get_download_sync_filename (dc, "", "");
1727 if (GNUNET_OK != GNUNET_DISK_directory_create_for_file (dir))
1732 fn = GNUNET_DISK_mktemp (dir);
1736 dc->serialization = get_serialization_short_name (fn);
1740 fn = get_download_sync_filename (dc, dc->serialization, "");
1743 GNUNET_free (dc->serialization);
1744 dc->serialization = NULL;
1749 wh = GNUNET_BIO_write_open (fn);
1752 GNUNET_free (dc->serialization);
1753 dc->serialization = NULL;
1757 GNUNET_assert ((GNUNET_YES == GNUNET_FS_uri_test_chk (dc->uri)) ||
1758 (GNUNET_YES == GNUNET_FS_uri_test_loc (dc->uri)));
1759 uris = GNUNET_FS_uri_to_string (dc->uri);
1760 if ((GNUNET_OK != GNUNET_BIO_write_string (wh, uris)) ||
1761 (GNUNET_OK != GNUNET_BIO_write_meta_data (wh, dc->meta)) ||
1762 (GNUNET_OK != GNUNET_BIO_write_string (wh, dc->emsg)) ||
1763 (GNUNET_OK != GNUNET_BIO_write_string (wh, dc->filename)) ||
1764 (GNUNET_OK != GNUNET_BIO_write_string (wh, dc->temp_filename)) ||
1765 (GNUNET_OK != GNUNET_BIO_write_int64 (wh, dc->old_file_size)) ||
1766 (GNUNET_OK != GNUNET_BIO_write_int64 (wh, dc->offset)) ||
1767 (GNUNET_OK != GNUNET_BIO_write_int64 (wh, dc->length)) ||
1768 (GNUNET_OK != GNUNET_BIO_write_int64 (wh, dc->completed)) ||
1769 (GNUNET_OK != write_start_time (wh, dc->start_time)) ||
1770 (GNUNET_OK != GNUNET_BIO_write_int32 (wh, dc->anonymity)) ||
1771 (GNUNET_OK != GNUNET_BIO_write_int32 (wh, (uint32_t) dc->options)) ||
1772 (GNUNET_OK != GNUNET_BIO_write_int32 (wh, (uint32_t) dc->has_finished)))
1777 if (NULL == dc->emsg)
1779 GNUNET_assert (dc->top_request != NULL);
1780 if (GNUNET_YES != write_download_request (wh, dc->top_request))
1786 GNUNET_free_non_null (uris);
1788 if (GNUNET_OK != GNUNET_BIO_write_close (wh))
1798 (void) GNUNET_BIO_write_close (wh);
1799 GNUNET_free_non_null (uris);
1800 if (0 != UNLINK (fn))
1801 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", fn);
1803 GNUNET_free (dc->serialization);
1804 dc->serialization = NULL;
1809 * Synchronize this search result with its mirror
1810 * on disk. Note that all internal FS-operations that change
1811 * publishing structs should already call "sync" internally,
1812 * so this function is likely not useful for clients.
1814 * @param sr the struct to sync
1817 GNUNET_FS_search_result_sync_ (struct GNUNET_FS_SearchResult *sr)
1819 struct GNUNET_BIO_WriteHandle *wh;
1823 if (NULL == sr->serialization)
1825 make_serialization_file_name_in_dir (sr->sc->h,
1826 (sr->sc->psearch_result ==
1828 GNUNET_FS_SYNC_PATH_MASTER_SEARCH :
1829 GNUNET_FS_SYNC_PATH_CHILD_SEARCH,
1830 sr->sc->serialization);
1831 if (NULL == sr->serialization)
1833 wh = get_write_handle_in_dir (sr->sc->h,
1834 (sr->sc->psearch_result ==
1835 NULL) ? GNUNET_FS_SYNC_PATH_MASTER_SEARCH :
1836 GNUNET_FS_SYNC_PATH_CHILD_SEARCH,
1837 sr->sc->serialization, sr->serialization);
1843 uris = GNUNET_FS_uri_to_string (sr->uri);
1844 if ((GNUNET_OK != GNUNET_BIO_write_string (wh, uris)) ||
1846 GNUNET_BIO_write_string (wh,
1848 NULL ? sr->download->serialization : NULL)) ||
1850 GNUNET_BIO_write_string (wh,
1851 sr->update_search !=
1852 NULL ? sr->update_search->serialization : NULL))
1853 || (GNUNET_OK != GNUNET_BIO_write_meta_data (wh, sr->meta)) ||
1854 (GNUNET_OK != GNUNET_BIO_write (wh, &sr->key, sizeof (GNUNET_HashCode)))
1855 || (GNUNET_OK != GNUNET_BIO_write_int32 (wh, sr->mandatory_missing)) ||
1856 (GNUNET_OK != GNUNET_BIO_write_int32 (wh, sr->optional_support)) ||
1857 (GNUNET_OK != GNUNET_BIO_write_int32 (wh, sr->availability_success)) ||
1858 (GNUNET_OK != GNUNET_BIO_write_int32 (wh, sr->availability_trials)) )
1863 if ( (sr->uri != NULL) &&
1864 (sr->sc->uri->type == ksk) &&
1865 (GNUNET_OK != GNUNET_BIO_write (wh, sr->keyword_bitmap,
1866 (sr->sc->uri->data.ksk.keywordCount + 7) / 8)) )
1871 if (GNUNET_OK != GNUNET_BIO_write_close (wh))
1877 GNUNET_free_non_null (uris);
1880 GNUNET_free_non_null (uris);
1882 (void) GNUNET_BIO_write_close (wh);
1883 remove_sync_file_in_dir (sr->sc->h,
1884 (sr->sc->psearch_result ==
1885 NULL) ? GNUNET_FS_SYNC_PATH_MASTER_SEARCH :
1886 GNUNET_FS_SYNC_PATH_CHILD_SEARCH,
1887 sr->sc->serialization, sr->serialization);
1888 GNUNET_free (sr->serialization);
1889 sr->serialization = NULL;
1894 * Synchronize this search struct with its mirror
1895 * on disk. Note that all internal FS-operations that change
1896 * publishing structs should already call "sync" internally,
1897 * so this function is likely not useful for clients.
1899 * @param sc the struct to sync
1902 GNUNET_FS_search_sync_ (struct GNUNET_FS_SearchContext *sc)
1904 struct GNUNET_BIO_WriteHandle *wh;
1907 const char *category;
1910 (sc->psearch_result ==
1911 NULL) ? GNUNET_FS_SYNC_PATH_MASTER_SEARCH :
1912 GNUNET_FS_SYNC_PATH_CHILD_SEARCH;
1913 if (NULL == sc->serialization)
1914 sc->serialization = make_serialization_file_name (sc->h, category);
1915 if (NULL == sc->serialization)
1918 wh = get_write_handle (sc->h, category, sc->serialization);
1924 GNUNET_assert ((GNUNET_YES == GNUNET_FS_uri_test_ksk (sc->uri)) ||
1925 (GNUNET_YES == GNUNET_FS_uri_test_sks (sc->uri)));
1926 uris = GNUNET_FS_uri_to_string (sc->uri);
1927 in_pause = (sc->task != GNUNET_SCHEDULER_NO_TASK) ? 'r' : '\0';
1928 if ((GNUNET_OK != GNUNET_BIO_write_string (wh, uris)) ||
1929 (GNUNET_OK != write_start_time (wh, sc->start_time)) ||
1930 (GNUNET_OK != GNUNET_BIO_write_string (wh, sc->emsg)) ||
1931 (GNUNET_OK != GNUNET_BIO_write_int32 (wh, (uint32_t) sc->options)) ||
1932 (GNUNET_OK != GNUNET_BIO_write (wh, &in_pause, sizeof (in_pause))) ||
1933 (GNUNET_OK != GNUNET_BIO_write_int32 (wh, sc->anonymity)))
1940 if (GNUNET_OK != GNUNET_BIO_write_close (wh))
1949 (void) GNUNET_BIO_write_close (wh);
1950 GNUNET_free_non_null (uris);
1951 GNUNET_FS_remove_sync_file_ (sc->h, category, sc->serialization);
1952 GNUNET_free (sc->serialization);
1953 sc->serialization = NULL;
1958 * Function called with a filename of serialized unindexing operation
1961 * @param cls the 'struct GNUNET_FS_Handle*'
1962 * @param filename complete filename (absolute path)
1963 * @return GNUNET_OK (continue to iterate)
1966 deserialize_unindex_file (void *cls, const char *filename)
1968 struct GNUNET_FS_Handle *h = cls;
1969 struct GNUNET_BIO_ReadHandle *rh;
1970 struct GNUNET_FS_UnindexContext *uc;
1971 struct GNUNET_FS_ProgressInfo pi;
1976 uc = GNUNET_malloc (sizeof (struct GNUNET_FS_UnindexContext));
1978 uc->serialization = get_serialization_short_name (filename);
1979 rh = GNUNET_BIO_read_open (filename);
1986 GNUNET_BIO_read_string (rh, "unindex-fn", &uc->filename, 10 * 1024)) ||
1987 (GNUNET_OK != GNUNET_BIO_read_int64 (rh, &uc->file_size)) ||
1988 (GNUNET_OK != read_start_time (rh, &uc->start_time)) ||
1989 (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &state)) ||
1990 (GNUNET_OK != GNUNET_BIO_read (rh, "uri", &uc->chk, sizeof (struct ContentHashKey))) ||
1991 (GNUNET_BIO_read_string (rh, "unindex-kskuri", &uris, 10 * 1024)) ||
1992 (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &uc->ksk_offset)) )
1999 uc->ksk_uri = GNUNET_FS_uri_parse (uris, &emsg);
2001 if (NULL == uc->ksk_uri)
2007 if ( (uc->ksk_offset > 0) &&
2008 ( (NULL == uc->ksk_uri) ||
2009 (uc->ksk_offset > uc->ksk_uri->data.ksk.keywordCount) ) )
2014 uc->state = (enum UnindexState) state;
2017 case UNINDEX_STATE_HASHING:
2019 case UNINDEX_STATE_FS_NOTIFY:
2021 GNUNET_BIO_read (rh, "unindex-hash", &uc->file_id,
2022 sizeof (GNUNET_HashCode)))
2028 case UNINDEX_STATE_DS_REMOVE:
2029 case UNINDEX_STATE_EXTRACT_KEYWORDS:
2030 case UNINDEX_STATE_DS_REMOVE_KBLOCKS:
2032 case UNINDEX_STATE_COMPLETE:
2034 case UNINDEX_STATE_ERROR:
2036 GNUNET_BIO_read_string (rh, "unindex-emsg", &uc->emsg, 10 * 1024))
2046 uc->top = GNUNET_FS_make_top (h, &GNUNET_FS_unindex_signal_suspend_, uc);
2047 pi.status = GNUNET_FS_STATUS_UNINDEX_RESUME;
2048 pi.value.unindex.specifics.resume.message = uc->emsg;
2049 GNUNET_FS_unindex_make_status_ (&pi, uc,
2051 UNINDEX_STATE_COMPLETE) ? uc->file_size : 0);
2054 case UNINDEX_STATE_HASHING:
2056 GNUNET_CRYPTO_hash_file (GNUNET_SCHEDULER_PRIORITY_IDLE, uc->filename,
2058 &GNUNET_FS_unindex_process_hash_, uc);
2060 case UNINDEX_STATE_FS_NOTIFY:
2061 uc->state = UNINDEX_STATE_HASHING;
2062 GNUNET_FS_unindex_process_hash_ (uc, &uc->file_id);
2064 case UNINDEX_STATE_DS_REMOVE:
2065 GNUNET_FS_unindex_do_remove_ (uc);
2067 case UNINDEX_STATE_EXTRACT_KEYWORDS:
2068 GNUNET_FS_unindex_do_extract_keywords_ (uc);
2070 case UNINDEX_STATE_DS_REMOVE_KBLOCKS:
2071 GNUNET_FS_unindex_do_remove_kblocks_ (uc);
2073 case UNINDEX_STATE_COMPLETE:
2074 case UNINDEX_STATE_ERROR:
2075 /* no need to resume any operation, we were done */
2080 if (GNUNET_OK != GNUNET_BIO_read_close (rh, &emsg))
2082 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2083 _("Failure while resuming unindexing operation `%s': %s\n"),
2089 GNUNET_free_non_null (uc->filename);
2090 if ((rh != NULL) && (GNUNET_OK != GNUNET_BIO_read_close (rh, &emsg)))
2092 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2093 _("Failed to resume unindexing operation `%s': %s\n"), filename,
2097 if (uc->serialization != NULL)
2098 GNUNET_FS_remove_sync_file_ (h, GNUNET_FS_SYNC_PATH_MASTER_UNINDEX,
2100 GNUNET_free_non_null (uc->serialization);
2107 * Deserialize a download.
2109 * @param h overall context
2110 * @param rh file to deserialize from
2111 * @param parent parent download
2112 * @param search associated search
2113 * @param serialization name under which the search was serialized
2116 deserialize_download (struct GNUNET_FS_Handle *h,
2117 struct GNUNET_BIO_ReadHandle *rh,
2118 struct GNUNET_FS_DownloadContext *parent,
2119 struct GNUNET_FS_SearchResult *search,
2120 const char *serialization);
2124 * Deserialize a search.
2126 * @param h overall context
2127 * @param rh file to deserialize from
2128 * @param psearch_result parent search result
2129 * @param serialization name under which the search was serialized
2131 static struct GNUNET_FS_SearchContext *
2132 deserialize_search (struct GNUNET_FS_Handle *h,
2133 struct GNUNET_BIO_ReadHandle *rh,
2134 struct GNUNET_FS_SearchResult *psearch_result,
2135 const char *serialization);
2139 * Function called with a filename of serialized search result
2142 * @param cls the 'struct GNUNET_FS_SearchContext*'
2143 * @param filename complete filename (absolute path)
2144 * @return GNUNET_OK (continue to iterate)
2147 deserialize_search_result (void *cls, const char *filename)
2149 struct GNUNET_FS_SearchContext *sc = cls;
2155 struct GNUNET_BIO_ReadHandle *rh;
2156 struct GNUNET_BIO_ReadHandle *drh;
2157 struct GNUNET_FS_SearchResult *sr;
2159 ser = get_serialization_short_name (filename);
2160 rh = GNUNET_BIO_read_open (filename);
2165 remove_sync_file_in_dir (sc->h,
2166 (sc->psearch_result ==
2167 NULL) ? GNUNET_FS_SYNC_PATH_MASTER_SEARCH :
2168 GNUNET_FS_SYNC_PATH_CHILD_SEARCH,
2169 sc->serialization, ser);
2178 sr = GNUNET_malloc (sizeof (struct GNUNET_FS_SearchResult));
2180 sr->serialization = ser;
2181 if ((GNUNET_OK != GNUNET_BIO_read_string (rh, "result-uri", &uris, 10 * 1024))
2182 || (NULL == (sr->uri = GNUNET_FS_uri_parse (uris, &emsg))) ||
2183 (GNUNET_OK != GNUNET_BIO_read_string (rh, "download-lnk", &download, 16))
2185 GNUNET_BIO_read_string (rh, "search-lnk", &update_srch, 16)) ||
2186 (GNUNET_OK != GNUNET_BIO_read_meta_data (rh, "result-meta", &sr->meta)) ||
2188 GNUNET_BIO_read (rh, "result-key", &sr->key, sizeof (GNUNET_HashCode)))
2189 || (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &sr->mandatory_missing)) ||
2190 (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &sr->optional_support)) ||
2191 (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &sr->availability_success)) ||
2192 (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &sr->availability_trials)))
2197 if (sr->sc->uri->type == ksk)
2199 sr->keyword_bitmap = GNUNET_malloc ((sr->sc->uri->data.ksk.keywordCount + 7) / 8); /* round up, count bits */
2200 if (GNUNET_OK != GNUNET_BIO_read (rh, "keyword-bitmap",
2202 (sr->sc->uri->data.ksk.keywordCount + 7) / 8))
2209 if (download != NULL)
2211 drh = get_read_handle (sc->h, GNUNET_FS_SYNC_PATH_CHILD_DOWNLOAD, download);
2214 deserialize_download (sc->h, drh, NULL, sr, download);
2215 if (GNUNET_OK != GNUNET_BIO_read_close (drh, &emsg))
2217 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2218 _("Failed to resume sub-download `%s': %s\n"), download,
2223 GNUNET_free (download);
2225 if (update_srch != NULL)
2228 get_read_handle (sc->h, GNUNET_FS_SYNC_PATH_CHILD_SEARCH, update_srch);
2231 deserialize_search (sc->h, drh, sr, update_srch);
2232 if (GNUNET_OK != GNUNET_BIO_read_close (drh, &emsg))
2234 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2235 _("Failed to resume sub-search `%s': %s\n"), update_srch,
2240 GNUNET_free (update_srch);
2242 GNUNET_CONTAINER_multihashmap_put (sc->master_result_map, &sr->key, sr,
2243 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
2244 if (GNUNET_OK != GNUNET_BIO_read_close (rh, &emsg))
2246 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2247 _("Failure while resuming search operation `%s': %s\n"),
2253 GNUNET_free_non_null (download);
2254 GNUNET_free_non_null (emsg);
2255 GNUNET_free_non_null (uris);
2256 GNUNET_free_non_null (update_srch);
2257 if (sr->uri != NULL)
2258 GNUNET_FS_uri_destroy (sr->uri);
2259 if (sr->meta != NULL)
2260 GNUNET_CONTAINER_meta_data_destroy (sr->meta);
2261 GNUNET_free (sr->serialization);
2263 if (GNUNET_OK != GNUNET_BIO_read_close (rh, &emsg))
2265 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2266 _("Failure while resuming search operation `%s': %s\n"),
2275 * Send the 'resume' signal to the callback; also actually
2276 * resume the download (put it in the queue). Does this
2277 * recursively for the top-level download and all child
2280 * @param dc download to resume
2283 signal_download_resume (struct GNUNET_FS_DownloadContext *dc)
2285 struct GNUNET_FS_DownloadContext *dcc;
2286 struct GNUNET_FS_ProgressInfo pi;
2288 pi.status = GNUNET_FS_STATUS_DOWNLOAD_RESUME;
2289 pi.value.download.specifics.resume.meta = dc->meta;
2290 pi.value.download.specifics.resume.message = dc->emsg;
2291 GNUNET_FS_download_make_status_ (&pi, dc);
2292 dcc = dc->child_head;
2295 signal_download_resume (dcc);
2298 if (dc->pending_head != NULL)
2299 GNUNET_FS_download_start_downloading_ (dc);
2304 * Signal resuming of a search to our clients (for the
2305 * top level search and all sub-searches).
2307 * @param sc search being resumed
2310 signal_search_resume (struct GNUNET_FS_SearchContext *sc);
2314 * Iterator over search results signaling resume to the client for
2317 * @param cls closure, the 'struct GNUNET_FS_SearchContext'
2318 * @param key current key code
2319 * @param value value in the hash map, the 'struct GNUNET_FS_SearchResult'
2320 * @return GNUNET_YES (we should continue to iterate)
2323 signal_result_resume (void *cls, const GNUNET_HashCode * key, void *value)
2325 struct GNUNET_FS_SearchContext *sc = cls;
2326 struct GNUNET_FS_ProgressInfo pi;
2327 struct GNUNET_FS_SearchResult *sr = value;
2329 if (0 == sr->mandatory_missing)
2331 pi.status = GNUNET_FS_STATUS_SEARCH_RESUME_RESULT;
2332 pi.value.search.specifics.resume_result.meta = sr->meta;
2333 pi.value.search.specifics.resume_result.uri = sr->uri;
2334 pi.value.search.specifics.resume_result.result = sr;
2335 pi.value.search.specifics.resume_result.availability_rank =
2336 2 * sr->availability_success - sr->availability_trials;
2337 pi.value.search.specifics.resume_result.availability_certainty =
2338 sr->availability_trials;
2339 pi.value.search.specifics.resume_result.applicability_rank =
2340 sr->optional_support;
2341 sr->client_info = GNUNET_FS_search_make_status_ (&pi, sc);
2343 if (sr->download != NULL)
2345 signal_download_resume (sr->download);
2349 GNUNET_FS_search_start_probe_ (sr);
2351 if (sr->update_search != NULL)
2352 signal_search_resume (sr->update_search);
2358 * Free memory allocated by the search context and its children
2360 * @param sc search context to free
2363 free_search_context (struct GNUNET_FS_SearchContext *sc);
2367 * Iterator over search results freeing each.
2369 * @param cls closure, the 'struct GNUNET_FS_SearchContext'
2370 * @param key current key code
2371 * @param value value in the hash map, the 'struct GNUNET_FS_SearchResult'
2372 * @return GNUNET_YES (we should continue to iterate)
2375 free_result (void *cls, const GNUNET_HashCode * key, void *value)
2377 struct GNUNET_FS_SearchResult *sr = value;
2379 if (sr->update_search != NULL)
2381 free_search_context (sr->update_search);
2382 GNUNET_assert (NULL == sr->update_search);
2384 GNUNET_CONTAINER_meta_data_destroy (sr->meta);
2385 GNUNET_FS_uri_destroy (sr->uri);
2392 * Free memory allocated by the search context and its children
2394 * @param sc search context to free
2397 free_search_context (struct GNUNET_FS_SearchContext *sc)
2399 if (sc->serialization != NULL)
2401 GNUNET_FS_remove_sync_file_ (sc->h,
2402 (sc->psearch_result ==
2403 NULL) ? GNUNET_FS_SYNC_PATH_MASTER_SEARCH :
2404 GNUNET_FS_SYNC_PATH_CHILD_SEARCH,
2406 GNUNET_FS_remove_sync_dir_ (sc->h,
2407 (sc->psearch_result ==
2408 NULL) ? GNUNET_FS_SYNC_PATH_MASTER_SEARCH :
2409 GNUNET_FS_SYNC_PATH_CHILD_SEARCH,
2412 GNUNET_free_non_null (sc->serialization);
2413 GNUNET_free_non_null (sc->emsg);
2414 if (sc->uri != NULL)
2415 GNUNET_FS_uri_destroy (sc->uri);
2416 if (sc->master_result_map != NULL)
2418 GNUNET_CONTAINER_multihashmap_iterate (sc->master_result_map, &free_result,
2420 GNUNET_CONTAINER_multihashmap_destroy (sc->master_result_map);
2427 * Function called with a filename of serialized sub-download
2430 * @param cls the 'struct GNUNET_FS_DownloadContext*' (parent)
2431 * @param filename complete filename (absolute path)
2432 * @return GNUNET_OK (continue to iterate)
2435 deserialize_subdownload (void *cls, const char *filename)
2437 struct GNUNET_FS_DownloadContext *parent = cls;
2440 struct GNUNET_BIO_ReadHandle *rh;
2442 ser = get_serialization_short_name (filename);
2443 rh = GNUNET_BIO_read_open (filename);
2446 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2448 ("Failed to resume sub-download `%s': could not open file `%s'\n"),
2453 deserialize_download (parent->h, rh, parent, NULL, ser);
2454 if (GNUNET_OK != GNUNET_BIO_read_close (rh, &emsg))
2456 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2457 _("Failed to resume sub-download `%s': %s\n"), ser, emsg);
2466 * Free this download context and all of its descendants.
2467 * (only works during deserialization since not all possible
2468 * state it taken care of).
2470 * @param dc context to free
2473 free_download_context (struct GNUNET_FS_DownloadContext *dc)
2475 struct GNUNET_FS_DownloadContext *dcc;
2477 if (dc->meta != NULL)
2478 GNUNET_CONTAINER_meta_data_destroy (dc->meta);
2479 if (dc->uri != NULL)
2480 GNUNET_FS_uri_destroy (dc->uri);
2481 GNUNET_free_non_null (dc->temp_filename);
2482 GNUNET_free_non_null (dc->emsg);
2483 GNUNET_free_non_null (dc->filename);
2484 GNUNET_free_non_null (dc->serialization);
2485 while (NULL != (dcc = dc->child_head))
2487 GNUNET_CONTAINER_DLL_remove (dc->child_head, dc->child_tail, dcc);
2488 free_download_context (dcc);
2490 GNUNET_FS_free_download_request_ (dc->top_request);
2491 if (NULL != dc->active)
2492 GNUNET_CONTAINER_multihashmap_destroy (dc->active);
2498 * Deserialize a download.
2500 * @param h overall context
2501 * @param rh file to deserialize from
2502 * @param parent parent download
2503 * @param search associated search
2504 * @param serialization name under which the search was serialized
2507 deserialize_download (struct GNUNET_FS_Handle *h,
2508 struct GNUNET_BIO_ReadHandle *rh,
2509 struct GNUNET_FS_DownloadContext *parent,
2510 struct GNUNET_FS_SearchResult *search,
2511 const char *serialization)
2513 struct GNUNET_FS_DownloadContext *dc;
2522 dc = GNUNET_malloc (sizeof (struct GNUNET_FS_DownloadContext));
2523 dc->parent = parent;
2525 dc->serialization = GNUNET_strdup (serialization);
2527 GNUNET_BIO_read_string (rh, "download-uri", &uris, 10 * 1024)) ||
2528 (NULL == (dc->uri = GNUNET_FS_uri_parse (uris, &emsg))) ||
2529 ((GNUNET_YES != GNUNET_FS_uri_test_chk (dc->uri)) &&
2530 (GNUNET_YES != GNUNET_FS_uri_test_loc (dc->uri))) ||
2531 (GNUNET_OK != GNUNET_BIO_read_meta_data (rh, "download-meta", &dc->meta))
2533 GNUNET_BIO_read_string (rh, "download-emsg", &dc->emsg, 10 * 1024)) ||
2535 GNUNET_BIO_read_string (rh, "download-fn", &dc->filename, 10 * 1024)) ||
2537 GNUNET_BIO_read_string (rh, "download-tfn", &dc->temp_filename,
2539 (GNUNET_OK != GNUNET_BIO_read_int64 (rh, &dc->old_file_size)) ||
2540 (GNUNET_OK != GNUNET_BIO_read_int64 (rh, &dc->offset)) ||
2541 (GNUNET_OK != GNUNET_BIO_read_int64 (rh, &dc->length)) ||
2542 (GNUNET_OK != GNUNET_BIO_read_int64 (rh, &dc->completed)) ||
2543 (GNUNET_OK != read_start_time (rh, &dc->start_time)) ||
2544 (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &dc->anonymity)) ||
2545 (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &options)) ||
2546 (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &status)))
2551 dc->options = (enum GNUNET_FS_DownloadOptions) options;
2553 GNUNET_CONTAINER_multihashmap_create (1 + 2 * (dc->length / DBLOCK_SIZE));
2554 dc->has_finished = (int) status;
2556 GNUNET_FS_compute_depth (GNUNET_FS_uri_chk_get_file_size (dc->uri));
2557 if (GNUNET_FS_uri_test_loc (dc->uri))
2558 GNUNET_assert (GNUNET_OK ==
2559 GNUNET_FS_uri_loc_get_peer_identity (dc->uri, &dc->target));
2560 if (dc->emsg == NULL)
2562 dc->top_request = read_download_request (rh);
2563 if (dc->top_request == NULL)
2569 dn = get_download_sync_filename (dc, dc->serialization, ".dir");
2572 if (GNUNET_YES == GNUNET_DISK_directory_test (dn))
2573 GNUNET_DISK_directory_scan (dn, &deserialize_subdownload, dc);
2578 GNUNET_abort (); // for debugging for now - FIXME
2579 GNUNET_CONTAINER_DLL_insert (parent->child_head, parent->child_tail, dc);
2583 dc->search = search;
2584 search->download = dc;
2586 if ((parent == NULL) && (search == NULL))
2589 GNUNET_FS_make_top (dc->h, &GNUNET_FS_download_signal_suspend_, dc);
2590 signal_download_resume (dc);
2593 dc->task = GNUNET_SCHEDULER_add_now (&GNUNET_FS_download_start_task_, dc);
2596 GNUNET_free_non_null (uris);
2597 GNUNET_free_non_null (emsg);
2598 free_download_context (dc);
2603 * Signal resuming of a search to our clients (for the
2604 * top level search and all sub-searches).
2606 * @param sc search being resumed
2609 signal_search_resume (struct GNUNET_FS_SearchContext *sc)
2611 struct GNUNET_FS_ProgressInfo pi;
2613 pi.status = GNUNET_FS_STATUS_SEARCH_RESUME;
2614 pi.value.search.specifics.resume.message = sc->emsg;
2615 pi.value.search.specifics.resume.is_paused =
2616 (sc->client == NULL) ? GNUNET_YES : GNUNET_NO;
2617 sc->client_info = GNUNET_FS_search_make_status_ (&pi, sc);
2618 GNUNET_CONTAINER_multihashmap_iterate (sc->master_result_map,
2619 &signal_result_resume, sc);
2625 * Deserialize a search.
2627 * @param h overall context
2628 * @param rh file to deserialize from
2629 * @param psearch_result parent search result
2630 * @param serialization name under which the search was serialized
2632 static struct GNUNET_FS_SearchContext *
2633 deserialize_search (struct GNUNET_FS_Handle *h,
2634 struct GNUNET_BIO_ReadHandle *rh,
2635 struct GNUNET_FS_SearchResult *psearch_result,
2636 const char *serialization)
2638 struct GNUNET_FS_SearchContext *sc;
2645 if ((psearch_result != NULL) && (psearch_result->update_search != NULL))
2652 sc = GNUNET_malloc (sizeof (struct GNUNET_FS_SearchContext));
2653 if (psearch_result != NULL)
2655 sc->psearch_result = psearch_result;
2656 psearch_result->update_search = sc;
2659 sc->serialization = GNUNET_strdup (serialization);
2660 if ((GNUNET_OK != GNUNET_BIO_read_string (rh, "search-uri", &uris, 10 * 1024))
2661 || (NULL == (sc->uri = GNUNET_FS_uri_parse (uris, &emsg))) ||
2662 ((GNUNET_YES != GNUNET_FS_uri_test_ksk (sc->uri)) &&
2663 (GNUNET_YES != GNUNET_FS_uri_test_sks (sc->uri))) ||
2664 (GNUNET_OK != read_start_time (rh, &sc->start_time)) ||
2666 GNUNET_BIO_read_string (rh, "search-emsg", &sc->emsg, 10 * 1024)) ||
2667 (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &options)) ||
2669 GNUNET_BIO_read (rh, "search-pause", &in_pause, sizeof (in_pause))) ||
2670 (GNUNET_OK != GNUNET_BIO_read_int32 (rh, &sc->anonymity)))
2675 sc->options = (enum GNUNET_FS_SearchOptions) options;
2676 sc->master_result_map = GNUNET_CONTAINER_multihashmap_create (16);
2677 dn = get_serialization_file_name_in_dir (h,
2678 (sc->psearch_result ==
2680 GNUNET_FS_SYNC_PATH_MASTER_SEARCH :
2681 GNUNET_FS_SYNC_PATH_CHILD_SEARCH,
2682 sc->serialization, "");
2685 if (GNUNET_YES == GNUNET_DISK_directory_test (dn))
2686 GNUNET_DISK_directory_scan (dn, &deserialize_search_result, sc);
2689 if (('\0' == in_pause) &&
2690 (GNUNET_OK != GNUNET_FS_search_start_searching_ (sc)))
2692 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2694 ("Could not resume running search, will resume as paused search\n"));
2696 signal_search_resume (sc);
2700 GNUNET_free_non_null (emsg);
2701 free_search_context (sc);
2702 GNUNET_free_non_null (uris);
2708 * Function called with a filename of serialized search operation
2711 * @param cls the 'struct GNUNET_FS_Handle*'
2712 * @param filename complete filename (absolute path)
2713 * @return GNUNET_OK (continue to iterate)
2716 deserialize_search_file (void *cls, const char *filename)
2718 struct GNUNET_FS_Handle *h = cls;
2721 struct GNUNET_BIO_ReadHandle *rh;
2722 struct GNUNET_FS_SearchContext *sc;
2725 if (0 != STAT (filename, &buf))
2727 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "stat", filename);
2730 if (S_ISDIR (buf.st_mode))
2731 return GNUNET_OK; /* skip directories */
2732 ser = get_serialization_short_name (filename);
2733 rh = GNUNET_BIO_read_open (filename);
2738 GNUNET_FS_remove_sync_file_ (h, GNUNET_FS_SYNC_PATH_MASTER_SEARCH, ser);
2743 sc = deserialize_search (h, rh, NULL, ser);
2745 sc->top = GNUNET_FS_make_top (h, &GNUNET_FS_search_signal_suspend_, sc);
2747 if (GNUNET_OK != GNUNET_BIO_read_close (rh, &emsg))
2749 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2750 _("Failure while resuming search operation `%s': %s\n"),
2759 * Function called with a filename of serialized download operation
2762 * @param cls the 'struct GNUNET_FS_Handle*'
2763 * @param filename complete filename (absolute path)
2764 * @return GNUNET_OK (continue to iterate)
2767 deserialize_download_file (void *cls, const char *filename)
2769 struct GNUNET_FS_Handle *h = cls;
2772 struct GNUNET_BIO_ReadHandle *rh;
2774 ser = get_serialization_short_name (filename);
2775 rh = GNUNET_BIO_read_open (filename);
2778 if (0 != UNLINK (filename))
2779 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", filename);
2783 deserialize_download (h, rh, NULL, NULL, ser);
2785 if (GNUNET_OK != GNUNET_BIO_read_close (rh, &emsg))
2787 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2788 _("Failure while resuming download operation `%s': %s\n"),
2797 * Deserialize informatin about pending operations.
2799 * @param master_path which master directory should be scanned
2800 * @param proc function to call for each entry (will get 'h' for 'cls')
2801 * @param h the 'struct GNUNET_FS_Handle*'
2804 deserialization_master (const char *master_path, GNUNET_FileNameCallback proc,
2805 struct GNUNET_FS_Handle *h)
2809 dn = get_serialization_file_name (h, master_path, "");
2812 if (GNUNET_YES == GNUNET_DISK_directory_test (dn))
2813 GNUNET_DISK_directory_scan (dn, proc, h);
2819 * Setup a connection to the file-sharing service.
2821 * @param cfg configuration to use
2822 * @param client_name unique identifier for this client
2823 * @param upcb function to call to notify about FS actions
2824 * @param upcb_cls closure for upcb
2825 * @param flags specific attributes for fs-operations
2826 * @param ... list of optional options, terminated with GNUNET_FS_OPTIONS_END
2827 * @return NULL on error
2829 struct GNUNET_FS_Handle *
2830 GNUNET_FS_start (const struct GNUNET_CONFIGURATION_Handle *cfg,
2831 const char *client_name, GNUNET_FS_ProgressCallback upcb,
2832 void *upcb_cls, enum GNUNET_FS_Flags flags, ...)
2834 struct GNUNET_FS_Handle *ret;
2835 enum GNUNET_FS_OPTIONS opt;
2838 ret = GNUNET_malloc (sizeof (struct GNUNET_FS_Handle));
2840 ret->client_name = GNUNET_strdup (client_name);
2842 ret->upcb_cls = upcb_cls;
2844 ret->max_parallel_downloads = DEFAULT_MAX_PARALLEL_DOWNLOADS;
2845 ret->max_parallel_requests = DEFAULT_MAX_PARALLEL_REQUESTS;
2846 ret->avg_block_latency = GNUNET_TIME_UNIT_MINUTES; /* conservative starting point */
2847 va_start (ap, flags);
2848 while (GNUNET_FS_OPTIONS_END != (opt = va_arg (ap, enum GNUNET_FS_OPTIONS)))
2852 case GNUNET_FS_OPTIONS_DOWNLOAD_PARALLELISM:
2853 ret->max_parallel_downloads = va_arg (ap, unsigned int);
2856 case GNUNET_FS_OPTIONS_REQUEST_PARALLELISM:
2857 ret->max_parallel_requests = va_arg (ap, unsigned int);
2862 GNUNET_free (ret->client_name);
2869 if (0 != (GNUNET_FS_FLAGS_PERSISTENCE & flags))
2871 deserialization_master (GNUNET_FS_SYNC_PATH_MASTER_PUBLISH,
2872 &deserialize_publish_file, ret);
2873 deserialization_master (GNUNET_FS_SYNC_PATH_MASTER_SEARCH,
2874 &deserialize_search_file, ret);
2875 deserialization_master (GNUNET_FS_SYNC_PATH_MASTER_DOWNLOAD,
2876 &deserialize_download_file, ret);
2877 deserialization_master (GNUNET_FS_SYNC_PATH_MASTER_UNINDEX,
2878 &deserialize_unindex_file, ret);
2885 * Close our connection with the file-sharing service.
2886 * The callback given to GNUNET_FS_start will no longer be
2887 * called after this function returns.
2889 * @param h handle that was returned from GNUNET_FS_start
2892 GNUNET_FS_stop (struct GNUNET_FS_Handle *h)
2894 while (h->top_head != NULL)
2895 h->top_head->ssf (h->top_head->ssf_cls);
2896 if (h->queue_job != GNUNET_SCHEDULER_NO_TASK)
2897 GNUNET_SCHEDULER_cancel (h->queue_job);
2898 GNUNET_free (h->client_name);