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"
35 * Start the given job (send signal, remove from pending queue, update
36 * counters and state).
38 * @param qe job to start
41 start_job (struct GNUNET_FS_QueueEntry *qe)
43 qe->client = GNUNET_CLIENT_connect ("fs", qe->h->cfg);
44 if (qe->client == NULL)
49 qe->start (qe->cls, qe->client);
51 qe->h->active_blocks += qe->blocks;
52 qe->start_time = GNUNET_TIME_absolute_get ();
53 GNUNET_CONTAINER_DLL_remove (qe->h->pending_head,
56 GNUNET_CONTAINER_DLL_insert_after (qe->h->running_head,
64 * Stop the given job (send signal, remove from active queue, update
65 * counters and state).
67 * @param qe job to stop
70 stop_job (struct GNUNET_FS_QueueEntry *qe)
74 qe->h->active_downloads--;
75 qe->h->active_blocks -= qe->blocks;
76 qe->run_time = GNUNET_TIME_relative_add (qe->run_time,
77 GNUNET_TIME_absolute_get_duration (qe->start_time));
78 GNUNET_CONTAINER_DLL_remove (qe->h->running_head,
81 GNUNET_CONTAINER_DLL_insert_after (qe->h->pending_head,
89 * Process the jobs in the job queue, possibly starting some
90 * and stopping others.
92 * @param cls the 'struct GNUNET_FS_Handle'
93 * @param tc scheduler context
96 process_job_queue (void *cls,
97 const struct GNUNET_SCHEDULER_TaskContext *tc)
99 struct GNUNET_FS_Handle *h = cls;
100 struct GNUNET_FS_QueueEntry *qe;
101 struct GNUNET_FS_QueueEntry *next;
102 struct GNUNET_TIME_Relative run_time;
103 struct GNUNET_TIME_Relative restart_at;
104 struct GNUNET_TIME_Relative rst;
105 struct GNUNET_TIME_Absolute end_time;
107 h->queue_job = GNUNET_SCHEDULER_NO_TASK;
108 next = h->pending_head;
109 while (NULL != (qe = next))
112 if (h->running_head == NULL)
117 if ( (qe->blocks + h->active_blocks <= h->max_parallel_requests) &&
118 (h->active_downloads + 1 <= h->max_parallel_downloads) )
124 if (h->pending_head == NULL)
125 return; /* no need to stop anything */
126 restart_at = GNUNET_TIME_UNIT_FOREVER_REL;
127 next = h->running_head;
128 while (NULL != (qe = next))
131 run_time = GNUNET_TIME_relative_multiply (h->avg_block_latency,
132 qe->blocks * qe->start_times);
133 end_time = GNUNET_TIME_absolute_add (qe->start_time,
135 rst = GNUNET_TIME_absolute_get_remaining (end_time);
136 restart_at = GNUNET_TIME_relative_min (rst, restart_at);
137 if (rst.rel_value > 0)
141 h->queue_job = GNUNET_SCHEDULER_add_delayed (restart_at,
148 * Add a job to the queue.
150 * @param h handle to the overall FS state
151 * @param start function to call to begin the job
152 * @param stop function to call to pause the job, or on dequeue (if the job was running)
153 * @param cls closure for start and stop
154 * @param blocks number of blocks this jobs uses
155 * @return queue handle
157 struct GNUNET_FS_QueueEntry *
158 GNUNET_FS_queue_ (struct GNUNET_FS_Handle *h,
159 GNUNET_FS_QueueStart start,
160 GNUNET_FS_QueueStop stop,
164 struct GNUNET_FS_QueueEntry *qe;
166 qe = GNUNET_malloc (sizeof (struct GNUNET_FS_QueueEntry));
171 qe->queue_time = GNUNET_TIME_absolute_get ();
173 GNUNET_CONTAINER_DLL_insert_after (h->pending_head,
177 if (h->queue_job != GNUNET_SCHEDULER_NO_TASK)
178 GNUNET_SCHEDULER_cancel (h->queue_job);
180 = GNUNET_SCHEDULER_add_now (&process_job_queue,
187 * Dequeue a job from the queue.
188 * @param qh handle for the job
191 GNUNET_FS_dequeue_ (struct GNUNET_FS_QueueEntry *qh)
193 struct GNUNET_FS_Handle *h;
196 if (qh->client != NULL)
198 GNUNET_CONTAINER_DLL_remove (h->pending_head,
202 if (h->queue_job != GNUNET_SCHEDULER_NO_TASK)
203 GNUNET_SCHEDULER_cancel (h->queue_job);
205 = GNUNET_SCHEDULER_add_now (&process_job_queue,
211 * Create a top-level activity entry.
213 * @param h global fs handle
214 * @param ssf suspend signal function to use
215 * @param ssf_cls closure for ssf
216 * @return fresh top-level activity handle
218 struct TopLevelActivity *
219 GNUNET_FS_make_top (struct GNUNET_FS_Handle *h,
220 SuspendSignalFunction ssf,
223 struct TopLevelActivity *ret;
225 ret = GNUNET_malloc (sizeof (struct TopLevelActivity));
227 ret->ssf_cls = ssf_cls;
228 GNUNET_CONTAINER_DLL_insert (h->top_head,
236 * Destroy a top-level activity entry.
238 * @param h global fs handle
239 * @param top top level activity entry
242 GNUNET_FS_end_top (struct GNUNET_FS_Handle *h,
243 struct TopLevelActivity *top)
245 GNUNET_CONTAINER_DLL_remove (h->top_head,
254 * Closure for "data_reader_file".
259 * Name of the file to read.
264 * File descriptor, NULL if it has not yet been opened.
266 struct GNUNET_DISK_FileHandle *fd;
271 * Function that provides data by reading from a file.
273 * @param cls closure (points to the file information)
274 * @param offset offset to read from; it is possible
275 * that the caller might need to go backwards
277 * @param max maximum number of bytes that should be
278 * copied to buf; readers are not allowed
279 * to provide less data unless there is an error;
280 * a value of "0" will be used at the end to allow
281 * the reader to clean up its internal state
282 * @param buf where the reader should write the data
283 * @param emsg location for the reader to store an error message
284 * @return number of bytes written, usually "max", 0 on error
287 GNUNET_FS_data_reader_file_(void *cls,
293 struct FileInfo *fi = cls;
299 GNUNET_DISK_file_close (fi->fd);
300 GNUNET_free (fi->filename);
306 fi->fd = GNUNET_DISK_file_open (fi->filename,
307 GNUNET_DISK_OPEN_READ,
308 GNUNET_DISK_PERM_NONE);
311 GNUNET_asprintf (emsg,
312 _("Could not open file `%s': %s"),
318 GNUNET_DISK_file_seek (fi->fd, offset, GNUNET_DISK_SEEK_SET);
319 ret = GNUNET_DISK_file_read (fi->fd, buf, max);
322 GNUNET_asprintf (emsg,
323 _("Could not read file `%s': %s"),
330 GNUNET_asprintf (emsg,
331 _("Short read reading from file `%s'!"),
340 * Create the closure for the 'GNUNET_FS_data_reader_file_' callback.
342 * @param filename file to read
343 * @return closure to use, NULL on error
346 GNUNET_FS_make_file_reader_context_ (const char *filename)
350 fi = GNUNET_malloc (sizeof(struct FileInfo));
351 fi->filename = GNUNET_STRINGS_filename_expand (filename);
352 if (fi->filename == NULL)
362 * Function that provides data by copying from a buffer.
364 * @param cls closure (points to the buffer)
365 * @param offset offset to read from; it is possible
366 * that the caller might need to go backwards
368 * @param max maximum number of bytes that should be
369 * copied to buf; readers are not allowed
370 * to provide less data unless there is an error;
371 * a value of "0" will be used at the end to allow
372 * the reader to clean up its internal state
373 * @param buf where the reader should write the data
374 * @param emsg location for the reader to store an error message
375 * @return number of bytes written, usually "max", 0 on error
378 GNUNET_FS_data_reader_copy_ (void *cls,
388 GNUNET_free_non_null (data);
391 memcpy (buf, &data[offset], max);
397 * Return the full filename where we would store state information
398 * (for serialization/deserialization).
400 * @param h master context
401 * @param ext component of the path
402 * @param ent entity identifier (or emtpy string for the directory)
403 * @return NULL on error
406 get_serialization_file_name (struct GNUNET_FS_Handle *h,
413 if (0 == (h->flags & GNUNET_FS_FLAGS_PERSISTENCE))
414 return NULL; /* persistence not requested */
416 GNUNET_CONFIGURATION_get_value_filename (h->cfg,
421 GNUNET_asprintf (&ret,
430 GNUNET_free (basename);
436 * Return the full filename where we would store state information
437 * (for serialization/deserialization) that is associated with a
440 * @param h master context
441 * @param ext component of the path
442 * @param uni name of the parent operation
443 * @param ent entity identifier (or emtpy string for the directory)
444 * @return NULL on error
447 get_serialization_file_name_in_dir (struct GNUNET_FS_Handle *h,
455 if (0 == (h->flags & GNUNET_FS_FLAGS_PERSISTENCE))
456 return NULL; /* persistence not requested */
458 GNUNET_CONFIGURATION_get_value_filename (h->cfg,
463 GNUNET_asprintf (&ret,
464 "%s%s%s%s%s%s%s.dir%s%s",
474 GNUNET_free (basename);
480 * Return a read handle for deserialization.
482 * @param h master context
483 * @param ext component of the path
484 * @param ent entity identifier (or emtpy string for the directory)
485 * @return NULL on error
487 static struct GNUNET_BIO_ReadHandle *
488 get_read_handle (struct GNUNET_FS_Handle *h,
493 struct GNUNET_BIO_ReadHandle *ret;
495 fn = get_serialization_file_name (h, ext, ent);
498 ret = GNUNET_BIO_read_open (fn);
505 * Return a write handle for serialization.
507 * @param h master context
508 * @param ext component of the path
509 * @param ent entity identifier (or emtpy string for the directory)
510 * @return NULL on error
512 static struct GNUNET_BIO_WriteHandle *
513 get_write_handle (struct GNUNET_FS_Handle *h,
518 struct GNUNET_BIO_WriteHandle *ret;
520 fn = get_serialization_file_name (h, ext, ent);
525 ret = GNUNET_BIO_write_open (fn);
534 * Return a write handle for serialization.
536 * @param h master context
537 * @param ext component of the path
538 * @param uni name of parent
539 * @param ent entity identifier (or emtpy string for the directory)
540 * @return NULL on error
542 static struct GNUNET_BIO_WriteHandle *
543 get_write_handle_in_dir (struct GNUNET_FS_Handle *h,
549 struct GNUNET_BIO_WriteHandle *ret;
551 fn = get_serialization_file_name_in_dir (h, ext, uni, ent);
554 ret = GNUNET_BIO_write_open (fn);
561 * Remove serialization/deserialization file from disk.
563 * @param h master context
564 * @param ext component of the path
565 * @param ent entity identifier
568 GNUNET_FS_remove_sync_file_ (struct GNUNET_FS_Handle *h,
574 if ( (NULL == ent) ||
575 (0 == strlen (ent)) )
580 filename = get_serialization_file_name (h, ext, ent);
581 if (filename != NULL)
583 if (0 != UNLINK (filename))
584 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING,
587 GNUNET_free (filename);
593 * Remove serialization/deserialization file from disk.
595 * @param h master context
596 * @param ext component of the path
597 * @param uni parent name
598 * @param ent entity identifier
601 remove_sync_file_in_dir (struct GNUNET_FS_Handle *h,
608 if ( (NULL == ent) ||
609 (0 == strlen (ent)) )
614 filename = get_serialization_file_name_in_dir (h, ext, uni, ent);
615 if (filename != NULL)
617 if (0 != UNLINK (filename))
618 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING,
621 GNUNET_free (filename);
627 * Remove serialization/deserialization directory from disk.
629 * @param h master context
630 * @param ext component of the path
631 * @param uni unique name of parent
634 GNUNET_FS_remove_sync_dir_ (struct GNUNET_FS_Handle *h,
642 dn = get_serialization_file_name_in_dir (h, ext, uni, "");
645 if ( (GNUNET_OK == GNUNET_DISK_directory_test (dn)) &&
646 (GNUNET_OK != GNUNET_DISK_directory_remove (dn)) )
647 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING,
655 * Serialize a 'start_time'. Since we use start-times to
656 * calculate the duration of some operation, we actually
657 * do not serialize the absolute time but the (relative)
658 * duration since the start time. When we then
659 * deserialize the start time, we take the current time and
660 * subtract that duration so that we get again an absolute
661 * time stamp that will result in correct performance
664 * @param wh handle for writing
665 * @param timestamp time to serialize
666 * @return GNUNET_OK on success
669 write_start_time (struct GNUNET_BIO_WriteHandle *wh,
670 struct GNUNET_TIME_Absolute timestamp)
672 struct GNUNET_TIME_Relative dur;
674 dur = GNUNET_TIME_absolute_get_duration (timestamp);
675 return GNUNET_BIO_write_int64 (wh, dur.rel_value);
680 * Serialize a 'start_time'. Since we use start-times to
681 * calculate the duration of some operation, we actually
682 * do not serialize the absolute time but the (relative)
683 * duration since the start time. When we then
684 * deserialize the start time, we take the current time and
685 * subtract that duration so that we get again an absolute
686 * time stamp that will result in correct performance
689 * @param rh handle for reading
690 * @param timestamp where to write the deserialized timestamp
691 * @return GNUNET_OK on success
694 read_start_time (struct GNUNET_BIO_ReadHandle *rh,
695 struct GNUNET_TIME_Absolute *timestamp)
697 struct GNUNET_TIME_Relative dur;
699 GNUNET_BIO_read_int64 (rh, &dur.rel_value))
700 return GNUNET_SYSERR;
701 *timestamp = GNUNET_TIME_absolute_subtract (GNUNET_TIME_absolute_get (),
708 * Using the given serialization filename, try to deserialize
709 * the file-information tree associated with it.
711 * @param h master context
712 * @param filename name of the file (without directory) with
714 * @return NULL on error
716 static struct GNUNET_FS_FileInformation *
717 deserialize_file_information (struct GNUNET_FS_Handle *h,
718 const char *filename);
722 * Using the given serialization filename, try to deserialize
723 * the file-information tree associated with it.
725 * @param h master context
726 * @param fn name of the file (without directory) with
728 * @param rh handle for reading
729 * @return NULL on error
731 static struct GNUNET_FS_FileInformation *
732 deserialize_fi_node (struct GNUNET_FS_Handle *h,
734 struct GNUNET_BIO_ReadHandle *rh)
736 struct GNUNET_FS_FileInformation *ret;
737 struct GNUNET_FS_FileInformation *nxt;
745 GNUNET_BIO_read (rh, "status flag", &b, sizeof(b)))
750 ret = GNUNET_malloc (sizeof (struct GNUNET_FS_FileInformation));
756 GNUNET_BIO_read_meta_data (rh, "metadata", &ret->meta)) ||
758 GNUNET_BIO_read_string (rh, "ksk-uri", &ksks, 32*1024)) ||
761 (ret->keywords = GNUNET_FS_uri_parse (ksks, NULL))) ) ||
763 GNUNET_FS_uri_test_ksk (ret->keywords)) ||
765 GNUNET_BIO_read_string (rh, "chk-uri", &chks, 1024)) ||
768 (ret->chk_uri = GNUNET_FS_uri_parse (chks, NULL))) ||
770 GNUNET_FS_uri_test_chk (ret->chk_uri)) ) ) ||
772 read_start_time (rh, &ret->start_time)) ||
774 GNUNET_BIO_read_string (rh, "emsg", &ret->emsg, 16*1024)) ||
776 GNUNET_BIO_read_string (rh, "fn", &ret->filename, 16*1024)) ||
778 GNUNET_BIO_read_int64 (rh, &ret->bo.expiration_time.abs_value)) ||
780 GNUNET_BIO_read_int32 (rh, &ret->bo.anonymity_level)) ||
782 GNUNET_BIO_read_int32 (rh, &ret->bo.content_priority)) ||
784 GNUNET_BIO_read_int32 (rh, &ret->bo.replication_level)) )
791 case 0: /* file-insert */
793 GNUNET_BIO_read_int64 (rh, &ret->data.file.file_size))
798 ret->is_directory = GNUNET_NO;
799 ret->data.file.do_index = GNUNET_NO;
800 ret->data.file.have_hash = GNUNET_NO;
801 ret->data.file.index_start_confirmed = GNUNET_NO;
802 if (GNUNET_NO == ret->is_published)
804 if (NULL == ret->filename)
806 ret->data.file.reader = &GNUNET_FS_data_reader_copy_;
807 ret->data.file.reader_cls = GNUNET_malloc_large (ret->data.file.file_size);
808 if (ret->data.file.reader_cls == NULL)
811 GNUNET_BIO_read (rh, "file-data", ret->data.file.reader_cls, ret->data.file.file_size))
819 ret->data.file.reader = &GNUNET_FS_data_reader_file_;
820 ret->data.file.reader_cls = GNUNET_FS_make_file_reader_context_ (ret->filename);
824 case 1: /* file-index, no hash */
825 if (NULL == ret->filename)
831 GNUNET_BIO_read_int64 (rh, &ret->data.file.file_size))
836 ret->is_directory = GNUNET_NO;
837 ret->data.file.do_index = GNUNET_YES;
838 ret->data.file.have_hash = GNUNET_NO;
839 ret->data.file.index_start_confirmed = GNUNET_NO;
840 ret->data.file.reader = &GNUNET_FS_data_reader_file_;
841 ret->data.file.reader_cls = GNUNET_FS_make_file_reader_context_ (ret->filename);
843 case 2: /* file-index-with-hash */
844 if (NULL == ret->filename)
850 GNUNET_BIO_read_int64 (rh, &ret->data.file.file_size)) ||
852 GNUNET_BIO_read (rh, "fileid", &ret->data.file.file_id, sizeof (GNUNET_HashCode))) )
857 ret->is_directory = GNUNET_NO;
858 ret->data.file.do_index = GNUNET_YES;
859 ret->data.file.have_hash = GNUNET_YES;
860 ret->data.file.index_start_confirmed = GNUNET_NO;
861 ret->data.file.reader = &GNUNET_FS_data_reader_file_;
862 ret->data.file.reader_cls = GNUNET_FS_make_file_reader_context_ (ret->filename);
864 case 3: /* file-index-with-hash-confirmed */
865 if (NULL == ret->filename)
871 GNUNET_BIO_read_int64 (rh, &ret->data.file.file_size)) ||
873 GNUNET_BIO_read (rh, "fileid", &ret->data.file.file_id, sizeof (GNUNET_HashCode))) )
878 ret->is_directory = GNUNET_NO;
879 ret->data.file.do_index = GNUNET_YES;
880 ret->data.file.have_hash = GNUNET_YES;
881 ret->data.file.index_start_confirmed = GNUNET_YES;
882 ret->data.file.reader = &GNUNET_FS_data_reader_file_;
883 ret->data.file.reader_cls = GNUNET_FS_make_file_reader_context_ (ret->filename);
885 case 4: /* directory */
886 ret->is_directory = GNUNET_YES;
888 GNUNET_BIO_read_int32 (rh, &dsize)) ||
889 (NULL == (ret->data.dir.dir_data = GNUNET_malloc_large (dsize))) ||
891 GNUNET_BIO_read (rh, "dir-data", ret->data.dir.dir_data, dsize)) ||
893 GNUNET_BIO_read_string (rh, "ent-filename", &filename, 16*1024)) )
898 ret->data.dir.dir_size = (uint32_t) dsize;
899 if (filename != NULL)
901 ret->data.dir.entries = deserialize_file_information (h, filename);
902 GNUNET_free (filename);
904 nxt = ret->data.dir.entries;
916 ret->serialization = GNUNET_strdup (fn);
918 GNUNET_BIO_read_string (rh, "nxt-filename", &filename, 16*1024))
923 if (filename != NULL)
925 ret->next = deserialize_file_information (h, filename);
926 GNUNET_free (filename);
929 GNUNET_free_non_null (ksks);
930 GNUNET_free_non_null (chks);
933 GNUNET_free_non_null (ksks);
934 GNUNET_free_non_null (chks);
935 GNUNET_free_non_null (filename);
936 GNUNET_FS_file_information_destroy (ret, NULL, NULL);
942 * Using the given serialization filename, try to deserialize
943 * the file-information tree associated with it.
945 * @param h master context
946 * @param filename name of the file (without directory) with
948 * @return NULL on error
950 static struct GNUNET_FS_FileInformation *
951 deserialize_file_information (struct GNUNET_FS_Handle *h,
952 const char *filename)
954 struct GNUNET_FS_FileInformation *ret;
955 struct GNUNET_BIO_ReadHandle *rh;
958 rh = get_read_handle (h, GNUNET_FS_SYNC_PATH_FILE_INFO, filename);
961 ret = deserialize_fi_node (h, filename, rh);
963 GNUNET_BIO_read_close (rh, &emsg))
965 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
966 _("Failed to resume publishing information `%s': %s\n"),
973 if (0 != UNLINK (filename))
974 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING,
983 * Given a serialization name (full absolute path), return the
984 * basename of the file (without the path), which must only
985 * consist of the 6 random characters.
987 * @param fullname name to extract the basename from
988 * @return copy of the basename, NULL on error
991 get_serialization_short_name (const char *fullname)
998 /* FIXME: we could do this faster since we know
999 the length of 'end'... */
1000 while ('\0' != *nxt)
1002 if (DIR_SEPARATOR == *nxt)
1006 if ( (end == NULL) ||
1007 (strlen (end) == 0) )
1012 GNUNET_break (6 == strlen (end));
1013 return GNUNET_strdup (end);
1018 * Create a new random name for serialization. Also checks if persistence
1019 * is enabled and returns NULL if not.
1021 * @param h master context
1022 * @param ext component of the path
1023 * @return NULL on errror
1026 make_serialization_file_name (struct GNUNET_FS_Handle *h,
1033 if (0 == (h->flags & GNUNET_FS_FLAGS_PERSISTENCE))
1034 return NULL; /* persistence not requested */
1035 dn = get_serialization_file_name (h, ext, "");
1039 GNUNET_DISK_directory_create_for_file (dn))
1044 fn = GNUNET_DISK_mktemp (dn);
1047 return NULL; /* epic fail */
1048 ret = get_serialization_short_name (fn);
1055 * Create a new random name for serialization. Also checks if persistence
1056 * is enabled and returns NULL if not.
1058 * @param h master context
1059 * @param ext component of the path
1060 * @param uni name of parent
1061 * @return NULL on errror
1064 make_serialization_file_name_in_dir (struct GNUNET_FS_Handle *h,
1072 if (0 == (h->flags & GNUNET_FS_FLAGS_PERSISTENCE))
1073 return NULL; /* persistence not requested */
1074 dn = get_serialization_file_name_in_dir (h, ext, uni, "");
1078 GNUNET_DISK_directory_create_for_file (dn))
1083 fn = GNUNET_DISK_mktemp (dn);
1086 return NULL; /* epic fail */
1087 ret = get_serialization_short_name (fn);
1094 * Copy all of the data from the reader to the write handle.
1096 * @param wh write handle
1097 * @param fi file with reader
1098 * @return GNUNET_OK on success
1101 copy_from_reader (struct GNUNET_BIO_WriteHandle *wh,
1102 struct GNUNET_FS_FileInformation * fi)
1104 char buf[32 * 1024];
1112 while (off < fi->data.file.file_size)
1114 left = GNUNET_MIN (sizeof(buf), fi->data.file.file_size - off);
1115 ret = fi->data.file.reader (fi->data.file.reader_cls,
1122 return GNUNET_SYSERR;
1125 GNUNET_BIO_write (wh, buf, ret))
1126 return GNUNET_SYSERR;
1134 * Create a temporary file on disk to store the current
1137 * @param fi file information to sync with disk
1140 GNUNET_FS_file_information_sync_ (struct GNUNET_FS_FileInformation * fi)
1143 struct GNUNET_BIO_WriteHandle *wh;
1148 if (NULL == fi->serialization)
1149 fi->serialization = make_serialization_file_name (fi->h, GNUNET_FS_SYNC_PATH_FILE_INFO);
1150 if (NULL == fi->serialization)
1152 wh = get_write_handle (fi->h, GNUNET_FS_SYNC_PATH_FILE_INFO, fi->serialization);
1155 GNUNET_free (fi->serialization);
1156 fi->serialization = NULL;
1159 if (GNUNET_YES == fi->is_directory)
1161 else if (GNUNET_YES == fi->data.file.index_start_confirmed)
1163 else if (GNUNET_YES == fi->data.file.have_hash)
1165 else if (GNUNET_YES == fi->data.file.do_index)
1169 if (fi->keywords != NULL)
1170 ksks = GNUNET_FS_uri_to_string (fi->keywords);
1173 if (fi->chk_uri != NULL)
1174 chks = GNUNET_FS_uri_to_string (fi->chk_uri);
1178 GNUNET_BIO_write (wh, &b, sizeof (b))) ||
1180 GNUNET_BIO_write_meta_data (wh, fi->meta)) ||
1182 GNUNET_BIO_write_string (wh, ksks)) ||
1184 GNUNET_BIO_write_string (wh, chks)) ||
1186 write_start_time (wh, fi->start_time)) ||
1188 GNUNET_BIO_write_string (wh, fi->emsg)) ||
1190 GNUNET_BIO_write_string (wh, fi->filename)) ||
1192 GNUNET_BIO_write_int64 (wh, fi->bo.expiration_time.abs_value)) ||
1194 GNUNET_BIO_write_int32 (wh, fi->bo.anonymity_level)) ||
1196 GNUNET_BIO_write_int32 (wh, fi->bo.content_priority)) ||
1198 GNUNET_BIO_write_int32 (wh, fi->bo.replication_level)) )
1203 GNUNET_free_non_null (chks);
1205 GNUNET_free_non_null (ksks);
1210 case 0: /* file-insert */
1212 GNUNET_BIO_write_int64 (wh, fi->data.file.file_size))
1217 if ( (GNUNET_NO == fi->is_published) &&
1218 (NULL == fi->filename) )
1220 copy_from_reader (wh, fi))
1226 case 1: /* file-index, no hash */
1227 if (NULL == fi->filename)
1233 GNUNET_BIO_write_int64 (wh, fi->data.file.file_size))
1239 case 2: /* file-index-with-hash */
1240 case 3: /* file-index-with-hash-confirmed */
1241 if (NULL == fi->filename)
1247 GNUNET_BIO_write_int64 (wh, fi->data.file.file_size)) ||
1249 GNUNET_BIO_write (wh, &fi->data.file.file_id, sizeof (GNUNET_HashCode))) )
1255 case 4: /* directory */
1257 GNUNET_BIO_write_int32 (wh, fi->data.dir.dir_size)) ||
1259 GNUNET_BIO_write (wh, fi->data.dir.dir_data, (uint32_t) fi->data.dir.dir_size)) ||
1261 GNUNET_BIO_write_string (wh,
1262 (fi->data.dir.entries == NULL)
1264 : fi->data.dir.entries->serialization)) )
1275 GNUNET_BIO_write_string (wh, (fi->next != NULL) ? fi->next->serialization : NULL))
1281 GNUNET_BIO_write_close (wh))
1290 (void) GNUNET_BIO_write_close (wh);
1291 GNUNET_free_non_null (chks);
1292 GNUNET_free_non_null (ksks);
1293 fn = get_serialization_file_name (fi->h, GNUNET_FS_SYNC_PATH_FILE_INFO, fi->serialization);
1296 if (0 != UNLINK (fn))
1297 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", fn);
1300 GNUNET_free (fi->serialization);
1301 fi->serialization = NULL;
1307 * Find the entry in the file information struct where the
1308 * serialization filename matches the given name.
1310 * @param pos file information to search
1311 * @param srch filename to search for
1312 * @return NULL if srch was not found in this subtree
1314 static struct GNUNET_FS_FileInformation *
1315 find_file_position (struct GNUNET_FS_FileInformation *pos,
1318 struct GNUNET_FS_FileInformation *r;
1322 if (0 == strcmp (srch,
1323 pos->serialization))
1325 if (pos->is_directory)
1327 r = find_file_position (pos->data.dir.entries,
1339 * Signal the FS's progress function that we are resuming
1342 * @param cls closure (of type "struct GNUNET_FS_PublishContext*")
1343 * @param fi the entry in the publish-structure
1344 * @param length length of the file or directory
1345 * @param meta metadata for the file or directory (can be modified)
1346 * @param uri pointer to the keywords that will be used for this entry (can be modified)
1347 * @param bo block options (can be modified)
1348 * @param do_index should we index?
1349 * @param client_info pointer to client context set upon creation (can be modified)
1350 * @return GNUNET_OK to continue (always)
1353 fip_signal_resume(void *cls,
1354 struct GNUNET_FS_FileInformation *fi,
1356 struct GNUNET_CONTAINER_MetaData *meta,
1357 struct GNUNET_FS_Uri **uri,
1358 struct GNUNET_FS_BlockOptions *bo,
1362 struct GNUNET_FS_PublishContext *sc = cls;
1363 struct GNUNET_FS_ProgressInfo pi;
1365 pi.status = GNUNET_FS_STATUS_PUBLISH_RESUME;
1366 pi.value.publish.specifics.resume.message = sc->fi->emsg;
1367 pi.value.publish.specifics.resume.chk_uri = sc->fi->chk_uri;
1368 *client_info = GNUNET_FS_publish_make_status_ (&pi, sc, fi, 0);
1374 * Function called with a filename of serialized publishing operation
1377 * @param cls the 'struct GNUNET_FS_Handle*'
1378 * @param filename complete filename (absolute path)
1379 * @return GNUNET_OK (continue to iterate)
1382 deserialize_publish_file (void *cls,
1383 const char *filename)
1385 struct GNUNET_FS_Handle *h = cls;
1386 struct GNUNET_BIO_ReadHandle *rh;
1387 struct GNUNET_FS_PublishContext *pc;
1395 pc = GNUNET_malloc (sizeof (struct GNUNET_FS_PublishContext));
1397 pc->serialization = get_serialization_short_name (filename);
1401 rh = GNUNET_BIO_read_open (filename);
1408 GNUNET_BIO_read_string (rh, "publish-nid", &pc->nid, 1024)) ||
1410 GNUNET_BIO_read_string (rh, "publish-nuid", &pc->nuid, 1024)) ||
1412 GNUNET_BIO_read_int32 (rh, &options)) ||
1414 GNUNET_BIO_read_int32 (rh, &all_done)) ||
1416 GNUNET_BIO_read_string (rh, "publish-firoot", &fi_root, 128)) ||
1418 GNUNET_BIO_read_string (rh, "publish-fipos", &fi_pos, 128)) ||
1420 GNUNET_BIO_read_string (rh, "publish-ns", &ns, 1024)) )
1425 pc->options = options;
1426 pc->all_done = all_done;
1427 if (NULL == fi_root)
1432 pc->fi = deserialize_file_information (h, fi_root);
1440 pc->namespace = GNUNET_FS_namespace_create (h, ns);
1441 if (pc->namespace == NULL)
1443 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1444 _("Failed to recover namespace `%s', cannot resume publishing operation.\n"),
1449 if ( (0 == (pc->options & GNUNET_FS_PUBLISH_OPTION_SIMULATE_ONLY)) &&
1450 (GNUNET_YES != pc->all_done) )
1452 pc->dsh = GNUNET_DATASTORE_connect (h->cfg);
1453 if (NULL == pc->dsh)
1458 pc->fi_pos = find_file_position (pc->fi,
1460 GNUNET_free (fi_pos);
1462 if (pc->fi_pos == NULL)
1464 /* failed to find position for resuming, outch! Will start from root! */
1466 if (pc->all_done != GNUNET_YES)
1467 pc->fi_pos = pc->fi;
1470 GNUNET_free (fi_root);
1472 /* generate RESUME event(s) */
1473 GNUNET_FS_file_information_inspect (pc->fi,
1477 /* re-start publishing (if needed)... */
1478 if (pc->all_done != GNUNET_YES)
1480 = GNUNET_SCHEDULER_add_with_priority (GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
1481 &GNUNET_FS_publish_main_,
1484 GNUNET_BIO_read_close (rh, &emsg))
1486 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1487 _("Failure while resuming publishing operation `%s': %s\n"),
1492 GNUNET_free_non_null (ns);
1493 pc->top = GNUNET_FS_make_top (h, &GNUNET_FS_publish_signal_suspend_, pc);
1496 GNUNET_free_non_null (pc->nid);
1497 GNUNET_free_non_null (pc->nuid);
1498 GNUNET_free_non_null (fi_root);
1499 GNUNET_free_non_null (fi_pos);
1500 GNUNET_free_non_null (ns);
1501 if ( (rh != NULL) &&
1503 GNUNET_BIO_read_close (rh, &emsg)) )
1505 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1506 _("Failed to resume publishing operation `%s': %s\n"),
1512 GNUNET_FS_file_information_destroy (pc->fi, NULL, NULL);
1513 if (0 != UNLINK (filename))
1514 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", filename);
1515 GNUNET_free (pc->serialization);
1522 * Synchronize this publishing struct with its mirror
1523 * on disk. Note that all internal FS-operations that change
1524 * publishing structs should already call "sync" internally,
1525 * so this function is likely not useful for clients.
1527 * @param pc the struct to sync
1530 GNUNET_FS_publish_sync_ (struct GNUNET_FS_PublishContext *pc)
1532 struct GNUNET_BIO_WriteHandle *wh;
1534 if (NULL == pc->serialization)
1535 pc->serialization = make_serialization_file_name (pc->h,
1536 GNUNET_FS_SYNC_PATH_MASTER_PUBLISH);
1537 if (NULL == pc->serialization)
1541 if (NULL == pc->fi->serialization)
1546 wh = get_write_handle (pc->h, GNUNET_FS_SYNC_PATH_MASTER_PUBLISH, pc->serialization);
1553 GNUNET_BIO_write_string (wh, pc->nid)) ||
1555 GNUNET_BIO_write_string (wh, pc->nuid)) ||
1557 GNUNET_BIO_write_int32 (wh, pc->options)) ||
1559 GNUNET_BIO_write_int32 (wh, pc->all_done)) ||
1561 GNUNET_BIO_write_string (wh, pc->fi->serialization)) ||
1563 GNUNET_BIO_write_string (wh, (pc->fi_pos == NULL) ? NULL : pc->fi_pos->serialization)) ||
1565 GNUNET_BIO_write_string (wh, (pc->namespace == NULL) ? NULL : pc->namespace->name)) )
1571 GNUNET_BIO_write_close (wh))
1580 (void) GNUNET_BIO_write_close (wh);
1581 GNUNET_FS_remove_sync_file_ (pc->h, GNUNET_FS_SYNC_PATH_MASTER_PUBLISH, pc->serialization);
1582 GNUNET_free (pc->serialization);
1583 pc->serialization = NULL;
1588 * Synchronize this unindex struct with its mirror
1589 * on disk. Note that all internal FS-operations that change
1590 * publishing structs should already call "sync" internally,
1591 * so this function is likely not useful for clients.
1593 * @param uc the struct to sync
1596 GNUNET_FS_unindex_sync_ (struct GNUNET_FS_UnindexContext *uc)
1598 struct GNUNET_BIO_WriteHandle *wh;
1600 if (NULL == uc->serialization)
1601 uc->serialization = make_serialization_file_name (uc->h,
1602 GNUNET_FS_SYNC_PATH_MASTER_UNINDEX);
1603 if (NULL == uc->serialization)
1605 wh = get_write_handle (uc->h, GNUNET_FS_SYNC_PATH_MASTER_UNINDEX, uc->serialization);
1612 GNUNET_BIO_write_string (wh, uc->filename)) ||
1614 GNUNET_BIO_write_int64 (wh, uc->file_size)) ||
1616 write_start_time (wh, uc->start_time)) ||
1618 GNUNET_BIO_write_int32 (wh, (uint32_t) uc->state)) ||
1619 ( (uc->state == UNINDEX_STATE_FS_NOTIFY) &&
1621 GNUNET_BIO_write (wh, &uc->file_id, sizeof (GNUNET_HashCode))) ) ||
1622 ( (uc->state == UNINDEX_STATE_ERROR) &&
1624 GNUNET_BIO_write_string (wh, uc->emsg)) ) )
1630 GNUNET_BIO_write_close (wh))
1639 (void) GNUNET_BIO_write_close (wh);
1640 GNUNET_FS_remove_sync_file_ (uc->h, GNUNET_FS_SYNC_PATH_MASTER_UNINDEX, uc->serialization);
1641 GNUNET_free (uc->serialization);
1642 uc->serialization = NULL;
1647 * Serialize a download request.
1649 * @param wh the 'struct GNUNET_BIO_WriteHandle*'
1650 * @param dr the 'struct DownloadRequest'
1651 * @return GNUNET_YES on success, GNUNET_NO on error
1654 write_download_request (struct GNUNET_BIO_WriteHandle *wh,
1655 struct DownloadRequest *dr)
1660 GNUNET_BIO_write_int32 (wh, dr->state)) ||
1662 GNUNET_BIO_write_int64 (wh, dr->offset)) ||
1664 GNUNET_BIO_write_int32 (wh, dr->num_children)) ||
1666 GNUNET_BIO_write_int32 (wh, dr->depth)) )
1668 if ( (dr->state == BRS_CHK_SET) &&
1670 GNUNET_BIO_write (wh, &dr->chk, sizeof (struct ContentHashKey))) )
1672 for (i=0;i<dr->num_children;i++)
1674 write_download_request (wh, dr->children[i]))
1681 * Read a download request tree.
1683 * @param rh stream to read from
1684 * @return value the 'struct DownloadRequest', NULL on error
1686 static struct DownloadRequest *
1687 read_download_request (struct GNUNET_BIO_ReadHandle *rh)
1689 struct DownloadRequest *dr;
1692 dr = GNUNET_malloc (sizeof (struct DownloadRequest));
1695 GNUNET_BIO_read_int32 (rh, &dr->state)) ||
1697 GNUNET_BIO_read_int64 (rh, &dr->offset)) ||
1699 GNUNET_BIO_read_int32 (rh, &dr->num_children)) ||
1700 (dr->num_children > CHK_PER_INODE) ||
1702 GNUNET_BIO_read_int32 (rh, &dr->depth)) ||
1703 ( (dr->depth == 0) && (dr->num_children > 0) ) ||
1704 ( (dr->depth > 0) && (dr->num_children == 0) ) )
1707 dr->num_children = 0;
1710 if (dr->num_children > 0)
1711 dr->children = GNUNET_malloc (dr->num_children *
1712 sizeof (struct ContentHashKey));
1716 case BRS_RECONSTRUCT_DOWN:
1717 case BRS_RECONSTRUCT_META_UP:
1718 case BRS_RECONSTRUCT_UP:
1722 GNUNET_BIO_read (rh, "chk", &dr->chk, sizeof (struct ContentHashKey)))
1725 case BRS_DOWNLOAD_DOWN:
1726 case BRS_DOWNLOAD_UP:
1733 for (i=0;i<dr->num_children;i++)
1735 if (NULL == (dr->children[i] = read_download_request (rh)))
1737 dr->children[i]->parent = dr;
1741 GNUNET_FS_free_download_request_ (dr);
1747 * Compute the name of the sync file (or directory) for the given download
1750 * @param dc download context to compute for
1751 * @param uni unique filename to use, use "" for the directory name
1752 * @param ext extension to use, use ".dir" for our own subdirectory
1753 * @return the expanded file name, NULL for none
1756 get_download_sync_filename (struct GNUNET_FS_DownloadContext *dc,
1763 if (dc->parent == NULL)
1764 return get_serialization_file_name (dc->h,
1765 (dc->search != NULL) ?
1766 GNUNET_FS_SYNC_PATH_CHILD_DOWNLOAD :
1767 GNUNET_FS_SYNC_PATH_MASTER_DOWNLOAD,
1769 if (dc->parent->serialization == NULL)
1771 par = get_download_sync_filename (dc->parent, dc->parent->serialization, "");
1774 GNUNET_asprintf (&epar,
1786 * Synchronize this download struct with its mirror
1787 * on disk. Note that all internal FS-operations that change
1788 * publishing structs should already call "sync" internally,
1789 * so this function is likely not useful for clients.
1791 * @param dc the struct to sync
1794 GNUNET_FS_download_sync_ (struct GNUNET_FS_DownloadContext *dc)
1796 struct GNUNET_BIO_WriteHandle *wh;
1801 if (NULL == dc->serialization)
1803 dir = get_download_sync_filename (dc, "", "");
1807 GNUNET_DISK_directory_create_for_file (dir))
1812 fn = GNUNET_DISK_mktemp (dir);
1816 dc->serialization = get_serialization_short_name (fn);
1820 fn = get_download_sync_filename (dc, dc->serialization, "");
1823 GNUNET_free (dc->serialization);
1824 dc->serialization = NULL;
1829 wh = GNUNET_BIO_write_open (fn);
1832 GNUNET_free (dc->serialization);
1833 dc->serialization = NULL;
1837 GNUNET_assert ( (GNUNET_YES == GNUNET_FS_uri_test_chk (dc->uri)) ||
1838 (GNUNET_YES == GNUNET_FS_uri_test_loc (dc->uri)) );
1839 uris = GNUNET_FS_uri_to_string (dc->uri);
1841 GNUNET_BIO_write_string (wh, uris)) ||
1843 GNUNET_BIO_write_meta_data (wh, dc->meta)) ||
1845 GNUNET_BIO_write_string (wh, dc->emsg)) ||
1847 GNUNET_BIO_write_string (wh, dc->filename)) ||
1849 GNUNET_BIO_write_string (wh, dc->temp_filename)) ||
1851 GNUNET_BIO_write_int64 (wh, dc->old_file_size)) ||
1853 GNUNET_BIO_write_int64 (wh, dc->offset)) ||
1855 GNUNET_BIO_write_int64 (wh, dc->length)) ||
1857 GNUNET_BIO_write_int64 (wh, dc->completed)) ||
1859 write_start_time (wh, dc->start_time)) ||
1861 GNUNET_BIO_write_int32 (wh, dc->anonymity)) ||
1863 GNUNET_BIO_write_int32 (wh, (uint32_t) dc->options)) ||
1865 GNUNET_BIO_write_int32 (wh, (uint32_t) dc->has_finished)) )
1870 if (NULL == dc->emsg)
1872 GNUNET_assert (dc->top_request != NULL);
1874 write_download_request (wh, dc->top_request))
1880 GNUNET_free_non_null (uris);
1883 GNUNET_BIO_write_close (wh))
1893 (void) GNUNET_BIO_write_close (wh);
1894 GNUNET_free_non_null (uris);
1895 if (0 != UNLINK (fn))
1896 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", fn);
1898 GNUNET_free (dc->serialization);
1899 dc->serialization = NULL;
1904 * Synchronize this search result with its mirror
1905 * on disk. Note that all internal FS-operations that change
1906 * publishing structs should already call "sync" internally,
1907 * so this function is likely not useful for clients.
1909 * @param sr the struct to sync
1912 GNUNET_FS_search_result_sync_ (struct GNUNET_FS_SearchResult *sr)
1914 struct GNUNET_BIO_WriteHandle *wh;
1918 if (NULL == sr->serialization)
1919 sr->serialization = make_serialization_file_name_in_dir (sr->sc->h,
1920 (sr->sc->psearch_result == NULL)
1921 ? GNUNET_FS_SYNC_PATH_MASTER_SEARCH
1922 : GNUNET_FS_SYNC_PATH_CHILD_SEARCH,
1923 sr->sc->serialization);
1924 if (NULL == sr->serialization)
1926 wh = get_write_handle_in_dir (sr->sc->h,
1927 (sr->sc->psearch_result == NULL)
1928 ? GNUNET_FS_SYNC_PATH_MASTER_SEARCH
1929 : GNUNET_FS_SYNC_PATH_CHILD_SEARCH,
1930 sr->sc->serialization,
1937 uris = GNUNET_FS_uri_to_string (sr->uri);
1939 GNUNET_BIO_write_string (wh, uris)) ||
1941 GNUNET_BIO_write_string (wh, sr->download != NULL ? sr->download->serialization : NULL)) ||
1943 GNUNET_BIO_write_string (wh, sr->update_search != NULL ? sr->update_search->serialization : NULL)) ||
1945 GNUNET_BIO_write_meta_data (wh, sr->meta)) ||
1947 GNUNET_BIO_write (wh, &sr->key, sizeof (GNUNET_HashCode))) ||
1949 GNUNET_BIO_write_int32 (wh, sr->mandatory_missing)) ||
1951 GNUNET_BIO_write_int32 (wh, sr->optional_support)) ||
1953 GNUNET_BIO_write_int32 (wh, sr->availability_success)) ||
1955 GNUNET_BIO_write_int32 (wh, sr->availability_trials)) )
1961 GNUNET_BIO_write_close (wh))
1967 GNUNET_free_non_null (uris);
1970 GNUNET_free_non_null (uris);
1972 (void) GNUNET_BIO_write_close (wh);
1973 remove_sync_file_in_dir (sr->sc->h,
1974 (sr->sc->psearch_result == NULL)
1975 ? GNUNET_FS_SYNC_PATH_MASTER_SEARCH
1976 : GNUNET_FS_SYNC_PATH_CHILD_SEARCH,
1977 sr->sc->serialization,
1979 GNUNET_free (sr->serialization);
1980 sr->serialization = NULL;
1985 * Synchronize this search struct with its mirror
1986 * on disk. Note that all internal FS-operations that change
1987 * publishing structs should already call "sync" internally,
1988 * so this function is likely not useful for clients.
1990 * @param sc the struct to sync
1993 GNUNET_FS_search_sync_ (struct GNUNET_FS_SearchContext *sc)
1995 struct GNUNET_BIO_WriteHandle *wh;
1998 const char *category;
2000 category = (sc->psearch_result == NULL)
2001 ? GNUNET_FS_SYNC_PATH_MASTER_SEARCH
2002 : GNUNET_FS_SYNC_PATH_CHILD_SEARCH;
2003 if (NULL == sc->serialization)
2004 sc->serialization = make_serialization_file_name (sc->h,
2006 if (NULL == sc->serialization)
2009 wh = get_write_handle (sc->h, category, sc->serialization);
2015 GNUNET_assert ( (GNUNET_YES == GNUNET_FS_uri_test_ksk (sc->uri)) ||
2016 (GNUNET_YES == GNUNET_FS_uri_test_sks (sc->uri)) );
2017 uris = GNUNET_FS_uri_to_string (sc->uri);
2018 in_pause = (sc->task != GNUNET_SCHEDULER_NO_TASK) ? 'r' : '\0';
2020 GNUNET_BIO_write_string (wh, uris)) ||
2022 write_start_time (wh, sc->start_time)) ||
2024 GNUNET_BIO_write_string (wh, sc->emsg)) ||
2026 GNUNET_BIO_write_int32 (wh, (uint32_t) sc->options)) ||
2028 GNUNET_BIO_write (wh, &in_pause, sizeof (in_pause))) ||
2030 GNUNET_BIO_write_int32 (wh, sc->anonymity)) )
2038 GNUNET_BIO_write_close (wh))
2047 (void) GNUNET_BIO_write_close (wh);
2048 GNUNET_free_non_null (uris);
2049 GNUNET_FS_remove_sync_file_ (sc->h, category, sc->serialization);
2050 GNUNET_free (sc->serialization);
2051 sc->serialization = NULL;
2056 * Function called with a filename of serialized unindexing operation
2059 * @param cls the 'struct GNUNET_FS_Handle*'
2060 * @param filename complete filename (absolute path)
2061 * @return GNUNET_OK (continue to iterate)
2064 deserialize_unindex_file (void *cls,
2065 const char *filename)
2067 struct GNUNET_FS_Handle *h = cls;
2068 struct GNUNET_BIO_ReadHandle *rh;
2069 struct GNUNET_FS_UnindexContext *uc;
2070 struct GNUNET_FS_ProgressInfo pi;
2074 uc = GNUNET_malloc (sizeof (struct GNUNET_FS_UnindexContext));
2076 uc->serialization = get_serialization_short_name (filename);
2077 rh = GNUNET_BIO_read_open (filename);
2084 GNUNET_BIO_read_string (rh, "unindex-fn", &uc->filename, 10*1024)) ||
2086 GNUNET_BIO_read_int64 (rh, &uc->file_size)) ||
2088 read_start_time (rh, &uc->start_time)) ||
2090 GNUNET_BIO_read_int32 (rh, &state)) )
2095 uc->state = (enum UnindexState) state;
2098 case UNINDEX_STATE_HASHING:
2100 case UNINDEX_STATE_FS_NOTIFY:
2102 GNUNET_BIO_read (rh, "unindex-hash", &uc->file_id, sizeof (GNUNET_HashCode)))
2108 case UNINDEX_STATE_DS_REMOVE:
2110 case UNINDEX_STATE_COMPLETE:
2112 case UNINDEX_STATE_ERROR:
2114 GNUNET_BIO_read_string (rh, "unindex-emsg", &uc->emsg, 10*1024))
2124 uc->top = GNUNET_FS_make_top (h,
2125 &GNUNET_FS_unindex_signal_suspend_,
2127 pi.status = GNUNET_FS_STATUS_UNINDEX_RESUME;
2128 pi.value.unindex.specifics.resume.message = uc->emsg;
2129 GNUNET_FS_unindex_make_status_ (&pi,
2131 (uc->state == UNINDEX_STATE_COMPLETE)
2136 case UNINDEX_STATE_HASHING:
2137 uc->fhc = GNUNET_CRYPTO_hash_file (GNUNET_SCHEDULER_PRIORITY_IDLE,
2140 &GNUNET_FS_unindex_process_hash_,
2143 case UNINDEX_STATE_FS_NOTIFY:
2144 uc->state = UNINDEX_STATE_HASHING;
2145 GNUNET_FS_unindex_process_hash_ (uc,
2148 case UNINDEX_STATE_DS_REMOVE:
2149 GNUNET_FS_unindex_do_remove_ (uc);
2151 case UNINDEX_STATE_COMPLETE:
2152 case UNINDEX_STATE_ERROR:
2153 /* no need to resume any operation, we were done */
2159 GNUNET_BIO_read_close (rh, &emsg))
2161 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2162 _("Failure while resuming unindexing operation `%s': %s\n"),
2169 GNUNET_free_non_null (uc->filename);
2170 if ( (rh != NULL) &&
2172 GNUNET_BIO_read_close (rh, &emsg)) )
2174 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2175 _("Failed to resume unindexing operation `%s': %s\n"),
2180 if (uc->serialization != NULL)
2181 GNUNET_FS_remove_sync_file_ (h, GNUNET_FS_SYNC_PATH_MASTER_UNINDEX, uc->serialization);
2182 GNUNET_free_non_null (uc->serialization);
2189 * Deserialize a download.
2191 * @param h overall context
2192 * @param rh file to deserialize from
2193 * @param parent parent download
2194 * @param search associated search
2195 * @param serialization name under which the search was serialized
2198 deserialize_download (struct GNUNET_FS_Handle *h,
2199 struct GNUNET_BIO_ReadHandle *rh,
2200 struct GNUNET_FS_DownloadContext *parent,
2201 struct GNUNET_FS_SearchResult *search,
2202 const char *serialization);
2206 * Deserialize a search.
2208 * @param h overall context
2209 * @param rh file to deserialize from
2210 * @param psearch_result parent search result
2211 * @param serialization name under which the search was serialized
2213 static struct GNUNET_FS_SearchContext *
2214 deserialize_search (struct GNUNET_FS_Handle *h,
2215 struct GNUNET_BIO_ReadHandle *rh,
2216 struct GNUNET_FS_SearchResult *psearch_result,
2217 const char *serialization);
2221 * Function called with a filename of serialized search result
2224 * @param cls the 'struct GNUNET_FS_SearchContext*'
2225 * @param filename complete filename (absolute path)
2226 * @return GNUNET_OK (continue to iterate)
2229 deserialize_search_result (void *cls,
2230 const char *filename)
2232 struct GNUNET_FS_SearchContext *sc = cls;
2238 struct GNUNET_BIO_ReadHandle *rh;
2239 struct GNUNET_BIO_ReadHandle *drh;
2240 struct GNUNET_FS_SearchResult *sr;
2242 ser = get_serialization_short_name (filename);
2243 rh = GNUNET_BIO_read_open (filename);
2248 remove_sync_file_in_dir (sc->h,
2249 (sc->psearch_result == NULL)
2250 ? GNUNET_FS_SYNC_PATH_MASTER_SEARCH
2251 : GNUNET_FS_SYNC_PATH_CHILD_SEARCH,
2262 sr = GNUNET_malloc (sizeof (struct GNUNET_FS_SearchResult));
2263 sr->serialization = ser;
2265 GNUNET_BIO_read_string (rh, "result-uri", &uris, 10*1024)) ||
2266 (NULL == (sr->uri = GNUNET_FS_uri_parse (uris, &emsg))) ||
2268 GNUNET_BIO_read_string (rh, "download-lnk", &download, 16)) ||
2270 GNUNET_BIO_read_string (rh, "search-lnk", &update_srch, 16)) ||
2272 GNUNET_BIO_read_meta_data (rh, "result-meta", &sr->meta)) ||
2274 GNUNET_BIO_read (rh, "result-key", &sr->key, sizeof (GNUNET_HashCode))) ||
2276 GNUNET_BIO_read_int32 (rh, &sr->mandatory_missing)) ||
2278 GNUNET_BIO_read_int32 (rh, &sr->optional_support)) ||
2280 GNUNET_BIO_read_int32 (rh, &sr->availability_success)) ||
2282 GNUNET_BIO_read_int32 (rh, &sr->availability_trials)) )
2288 if (download != NULL)
2290 drh = get_read_handle (sc->h,
2291 GNUNET_FS_SYNC_PATH_CHILD_DOWNLOAD,
2295 deserialize_download (sc->h,
2301 GNUNET_BIO_read_close (drh, &emsg))
2303 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2304 _("Failed to resume sub-download `%s': %s\n"),
2310 GNUNET_free (download);
2312 if (update_srch != NULL)
2314 drh = get_read_handle (sc->h,
2315 GNUNET_FS_SYNC_PATH_CHILD_SEARCH,
2319 deserialize_search (sc->h,
2324 GNUNET_BIO_read_close (drh, &emsg))
2326 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2327 _("Failed to resume sub-search `%s': %s\n"),
2333 GNUNET_free (update_srch);
2335 GNUNET_CONTAINER_multihashmap_put (sc->master_result_map,
2338 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
2340 GNUNET_BIO_read_close (rh, &emsg))
2342 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2343 _("Failure while resuming search operation `%s': %s\n"),
2350 GNUNET_free_non_null (download);
2351 GNUNET_free_non_null (emsg);
2352 GNUNET_free_non_null (uris);
2353 GNUNET_free_non_null (update_srch);
2354 if (sr->uri != NULL)
2355 GNUNET_FS_uri_destroy (sr->uri);
2356 if (sr->meta != NULL)
2357 GNUNET_CONTAINER_meta_data_destroy (sr->meta);
2358 GNUNET_free (sr->serialization);
2361 GNUNET_BIO_read_close (rh, &emsg))
2363 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2364 _("Failure while resuming search operation `%s': %s\n"),
2374 * Send the 'resume' signal to the callback; also actually
2375 * resume the download (put it in the queue). Does this
2376 * recursively for the top-level download and all child
2379 * @param dc download to resume
2382 signal_download_resume (struct GNUNET_FS_DownloadContext *dc)
2384 struct GNUNET_FS_DownloadContext *dcc;
2385 struct GNUNET_FS_ProgressInfo pi;
2387 pi.status = GNUNET_FS_STATUS_DOWNLOAD_RESUME;
2388 pi.value.download.specifics.resume.meta = dc->meta;
2389 pi.value.download.specifics.resume.message = dc->emsg;
2390 GNUNET_FS_download_make_status_ (&pi,
2392 dcc = dc->child_head;
2395 signal_download_resume (dcc);
2398 if (dc->pending_head != NULL)
2399 GNUNET_FS_download_start_downloading_ (dc);
2404 * Signal resuming of a search to our clients (for the
2405 * top level search and all sub-searches).
2407 * @param sc search being resumed
2410 signal_search_resume (struct GNUNET_FS_SearchContext *sc);
2414 * Iterator over search results signaling resume to the client for
2417 * @param cls closure, the 'struct GNUNET_FS_SearchContext'
2418 * @param key current key code
2419 * @param value value in the hash map, the 'struct GNUNET_FS_SearchResult'
2420 * @return GNUNET_YES (we should continue to iterate)
2423 signal_result_resume (void *cls,
2424 const GNUNET_HashCode * key,
2427 struct GNUNET_FS_SearchContext *sc = cls;
2428 struct GNUNET_FS_ProgressInfo pi;
2429 struct GNUNET_FS_SearchResult *sr = value;
2431 if (0 == sr->mandatory_missing)
2433 pi.status = GNUNET_FS_STATUS_SEARCH_RESUME_RESULT;
2434 pi.value.search.specifics.resume_result.meta = sr->meta;
2435 pi.value.search.specifics.resume_result.uri = sr->uri;
2436 pi.value.search.specifics.resume_result.result = sr;
2437 pi.value.search.specifics.resume_result.availability_rank = 2*sr->availability_success - sr->availability_trials;
2438 pi.value.search.specifics.resume_result.availability_certainty = sr->availability_trials;
2439 pi.value.search.specifics.resume_result.applicability_rank = sr->optional_support;
2440 sr->client_info = GNUNET_FS_search_make_status_ (&pi,
2443 if (sr->download != NULL)
2445 signal_download_resume (sr->download);
2449 GNUNET_FS_search_start_probe_ (sr);
2451 if (sr->update_search != NULL)
2452 signal_search_resume (sr->update_search);
2458 * Free memory allocated by the search context and its children
2460 * @param sc search context to free
2463 free_search_context (struct GNUNET_FS_SearchContext *sc);
2467 * Iterator over search results freeing each.
2469 * @param cls closure, the 'struct GNUNET_FS_SearchContext'
2470 * @param key current key code
2471 * @param value value in the hash map, the 'struct GNUNET_FS_SearchResult'
2472 * @return GNUNET_YES (we should continue to iterate)
2475 free_result (void *cls,
2476 const GNUNET_HashCode * key,
2479 struct GNUNET_FS_SearchResult *sr = value;
2481 if (sr->update_search != NULL)
2483 free_search_context (sr->update_search);
2484 GNUNET_assert (NULL == sr->update_search);
2486 GNUNET_CONTAINER_meta_data_destroy (sr->meta);
2487 GNUNET_FS_uri_destroy (sr->uri);
2494 * Free memory allocated by the search context and its children
2496 * @param sc search context to free
2499 free_search_context (struct GNUNET_FS_SearchContext *sc)
2501 if (sc->serialization != NULL)
2503 GNUNET_FS_remove_sync_file_ (sc->h,
2504 (sc->psearch_result == NULL)
2505 ? GNUNET_FS_SYNC_PATH_MASTER_SEARCH
2506 : GNUNET_FS_SYNC_PATH_CHILD_SEARCH,
2508 GNUNET_FS_remove_sync_dir_ (sc->h,
2509 (sc->psearch_result == NULL)
2510 ? GNUNET_FS_SYNC_PATH_MASTER_SEARCH
2511 : GNUNET_FS_SYNC_PATH_CHILD_SEARCH,
2514 GNUNET_free_non_null (sc->serialization);
2515 GNUNET_free_non_null (sc->emsg);
2516 if (sc->uri != NULL)
2517 GNUNET_FS_uri_destroy (sc->uri);
2518 if (sc->master_result_map != NULL)
2520 GNUNET_CONTAINER_multihashmap_iterate (sc->master_result_map,
2523 GNUNET_CONTAINER_multihashmap_destroy (sc->master_result_map);
2530 * Function called with a filename of serialized sub-download
2533 * @param cls the 'struct GNUNET_FS_DownloadContext*' (parent)
2534 * @param filename complete filename (absolute path)
2535 * @return GNUNET_OK (continue to iterate)
2538 deserialize_subdownload (void *cls,
2539 const char *filename)
2541 struct GNUNET_FS_DownloadContext *parent = cls;
2544 struct GNUNET_BIO_ReadHandle *rh;
2546 ser = get_serialization_short_name (filename);
2547 rh = GNUNET_BIO_read_open (filename);
2550 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2551 _("Failed to resume sub-download `%s': could not open file `%s'\n"),
2557 deserialize_download (parent->h,
2563 GNUNET_BIO_read_close (rh, &emsg))
2565 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2566 _("Failed to resume sub-download `%s': %s\n"),
2577 * Free this download context and all of its descendants.
2578 * (only works during deserialization since not all possible
2579 * state it taken care of).
2581 * @param dc context to free
2584 free_download_context (struct GNUNET_FS_DownloadContext *dc)
2586 struct GNUNET_FS_DownloadContext *dcc;
2588 if (dc->meta != NULL)
2589 GNUNET_CONTAINER_meta_data_destroy (dc->meta);
2590 if (dc->uri != NULL)
2591 GNUNET_FS_uri_destroy (dc->uri);
2592 GNUNET_free_non_null (dc->temp_filename);
2593 GNUNET_free_non_null (dc->emsg);
2594 GNUNET_free_non_null (dc->filename);
2595 GNUNET_free_non_null (dc->serialization);
2596 while (NULL != (dcc = dc->child_head))
2598 GNUNET_CONTAINER_DLL_remove (dc->child_head,
2601 free_download_context (dcc);
2603 GNUNET_FS_free_download_request_ (dc->top_request);
2604 if (NULL != dc->active)
2605 GNUNET_CONTAINER_multihashmap_destroy (dc->active);
2611 * Deserialize a download.
2613 * @param h overall context
2614 * @param rh file to deserialize from
2615 * @param parent parent download
2616 * @param search associated search
2617 * @param serialization name under which the search was serialized
2620 deserialize_download (struct GNUNET_FS_Handle *h,
2621 struct GNUNET_BIO_ReadHandle *rh,
2622 struct GNUNET_FS_DownloadContext *parent,
2623 struct GNUNET_FS_SearchResult *search,
2624 const char *serialization)
2626 struct GNUNET_FS_DownloadContext *dc;
2627 struct DownloadRequest *dr;
2637 dc = GNUNET_malloc (sizeof (struct GNUNET_FS_DownloadContext));
2638 dc->parent = parent;
2640 dc->serialization = GNUNET_strdup (serialization);
2642 GNUNET_BIO_read_string (rh, "download-uri", &uris, 10*1024)) ||
2643 (NULL == (dc->uri = GNUNET_FS_uri_parse (uris, &emsg))) ||
2644 ( (GNUNET_YES != GNUNET_FS_uri_test_chk (dc->uri)) &&
2645 (GNUNET_YES != GNUNET_FS_uri_test_loc (dc->uri)) ) ||
2647 GNUNET_BIO_read_meta_data (rh, "download-meta", &dc->meta)) ||
2649 GNUNET_BIO_read_string (rh, "download-emsg", &dc->emsg, 10*1024)) ||
2651 GNUNET_BIO_read_string (rh, "download-fn", &dc->filename, 10*1024)) ||
2653 GNUNET_BIO_read_string (rh, "download-tfn", &dc->temp_filename, 10*1024)) ||
2655 GNUNET_BIO_read_int64 (rh, &dc->old_file_size)) ||
2657 GNUNET_BIO_read_int64 (rh, &dc->offset)) ||
2659 GNUNET_BIO_read_int64 (rh, &dc->length)) ||
2661 GNUNET_BIO_read_int64 (rh, &dc->completed)) ||
2663 read_start_time (rh, &dc->start_time)) ||
2665 GNUNET_BIO_read_int32 (rh, &dc->anonymity)) ||
2667 GNUNET_BIO_read_int32 (rh, &options)) ||
2669 GNUNET_BIO_read_int32 (rh, &status)) )
2674 dc->options = (enum GNUNET_FS_DownloadOptions) options;
2675 dc->active = GNUNET_CONTAINER_multihashmap_create (1 + 2 * (dc->length / DBLOCK_SIZE));
2676 dc->has_finished = (int) status;
2677 dc->treedepth = GNUNET_FS_compute_depth (GNUNET_FS_uri_chk_get_file_size (dc->uri));
2678 if (GNUNET_FS_uri_test_loc (dc->uri))
2679 GNUNET_assert (GNUNET_OK ==
2680 GNUNET_FS_uri_loc_get_peer_identity (dc->uri,
2682 if (dc->emsg == NULL)
2684 dc->top_request = read_download_request (rh);
2685 if (dc->top_request == NULL)
2691 dn = get_download_sync_filename (dc, dc->serialization, ".dir");
2695 GNUNET_DISK_directory_test (dn))
2696 GNUNET_DISK_directory_scan (dn, &deserialize_subdownload, dc);
2701 abort (); // for debugging for now
2702 GNUNET_CONTAINER_DLL_insert (parent->child_head,
2708 dc->search = search;
2709 search->download = dc;
2711 if ( (parent == NULL) &&
2714 dc->top = GNUNET_FS_make_top (dc->h,
2715 &GNUNET_FS_download_signal_suspend_,
2717 signal_download_resume (dc);
2721 = GNUNET_SCHEDULER_add_now (&GNUNET_FS_download_start_task_, dc);
2724 GNUNET_free_non_null (uris);
2725 GNUNET_free_non_null (emsg);
2726 free_download_context (dc);
2731 * Signal resuming of a search to our clients (for the
2732 * top level search and all sub-searches).
2734 * @param sc search being resumed
2737 signal_search_resume (struct GNUNET_FS_SearchContext *sc)
2739 struct GNUNET_FS_ProgressInfo pi;
2741 pi.status = GNUNET_FS_STATUS_SEARCH_RESUME;
2742 pi.value.search.specifics.resume.message = sc->emsg;
2743 pi.value.search.specifics.resume.is_paused = (sc->client == NULL) ? GNUNET_YES : GNUNET_NO;
2744 sc->client_info = GNUNET_FS_search_make_status_ (&pi,
2746 GNUNET_CONTAINER_multihashmap_iterate (sc->master_result_map,
2747 &signal_result_resume,
2754 * Deserialize a search.
2756 * @param h overall context
2757 * @param rh file to deserialize from
2758 * @param psearch_result parent search result
2759 * @param serialization name under which the search was serialized
2761 static struct GNUNET_FS_SearchContext *
2762 deserialize_search (struct GNUNET_FS_Handle *h,
2763 struct GNUNET_BIO_ReadHandle *rh,
2764 struct GNUNET_FS_SearchResult *psearch_result,
2765 const char *serialization)
2767 struct GNUNET_FS_SearchContext *sc;
2774 if ( (psearch_result != NULL) &&
2775 (psearch_result->update_search != NULL) )
2782 sc = GNUNET_malloc (sizeof (struct GNUNET_FS_SearchContext));
2783 if (psearch_result != NULL)
2785 sc->psearch_result = psearch_result;
2786 psearch_result->update_search = sc;
2789 sc->serialization = GNUNET_strdup (serialization);
2791 GNUNET_BIO_read_string (rh, "search-uri", &uris, 10*1024)) ||
2792 (NULL == (sc->uri = GNUNET_FS_uri_parse (uris, &emsg))) ||
2793 ( (GNUNET_YES != GNUNET_FS_uri_test_ksk (sc->uri)) &&
2794 (GNUNET_YES != GNUNET_FS_uri_test_sks (sc->uri)) ) ||
2796 read_start_time (rh, &sc->start_time)) ||
2798 GNUNET_BIO_read_string (rh, "search-emsg", &sc->emsg, 10*1024)) ||
2800 GNUNET_BIO_read_int32 (rh, &options)) ||
2802 GNUNET_BIO_read (rh, "search-pause", &in_pause, sizeof (in_pause))) ||
2804 GNUNET_BIO_read_int32 (rh, &sc->anonymity)) )
2809 sc->options = (enum GNUNET_FS_SearchOptions) options;
2810 sc->master_result_map = GNUNET_CONTAINER_multihashmap_create (16);
2811 dn = get_serialization_file_name_in_dir (h,
2812 (sc->psearch_result == NULL)
2813 ? GNUNET_FS_SYNC_PATH_MASTER_SEARCH
2814 : GNUNET_FS_SYNC_PATH_CHILD_SEARCH,
2820 GNUNET_DISK_directory_test (dn))
2821 GNUNET_DISK_directory_scan (dn, &deserialize_search_result, sc);
2824 if ( ('\0' == in_pause) &&
2826 GNUNET_FS_search_start_searching_ (sc)) )
2828 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2829 _("Could not resume running search, will resume as paused search\n"));
2831 signal_search_resume (sc);
2835 GNUNET_free_non_null (emsg);
2836 free_search_context (sc);
2837 GNUNET_free_non_null (uris);
2843 * Function called with a filename of serialized search operation
2846 * @param cls the 'struct GNUNET_FS_Handle*'
2847 * @param filename complete filename (absolute path)
2848 * @return GNUNET_OK (continue to iterate)
2851 deserialize_search_file (void *cls,
2852 const char *filename)
2854 struct GNUNET_FS_Handle *h = cls;
2857 struct GNUNET_BIO_ReadHandle *rh;
2858 struct GNUNET_FS_SearchContext *sc;
2860 ser = get_serialization_short_name (filename);
2861 rh = GNUNET_BIO_read_open (filename);
2866 GNUNET_FS_remove_sync_file_ (h, GNUNET_FS_SYNC_PATH_MASTER_SEARCH, ser);
2871 sc = deserialize_search (h, rh, NULL, ser);
2873 sc->top = GNUNET_FS_make_top (h, &GNUNET_FS_search_signal_suspend_, sc);
2876 GNUNET_BIO_read_close (rh, &emsg))
2878 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2879 _("Failure while resuming search operation `%s': %s\n"),
2889 * Function called with a filename of serialized download operation
2892 * @param cls the 'struct GNUNET_FS_Handle*'
2893 * @param filename complete filename (absolute path)
2894 * @return GNUNET_OK (continue to iterate)
2897 deserialize_download_file (void *cls,
2898 const char *filename)
2900 struct GNUNET_FS_Handle *h = cls;
2903 struct GNUNET_BIO_ReadHandle *rh;
2905 ser = get_serialization_short_name (filename);
2906 rh = GNUNET_BIO_read_open (filename);
2909 if (0 != UNLINK (filename))
2910 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING,
2916 deserialize_download (h, rh, NULL, NULL, ser);
2919 GNUNET_BIO_read_close (rh, &emsg))
2921 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2922 _("Failure while resuming download operation `%s': %s\n"),
2932 * Deserialize informatin about pending operations.
2934 * @param master_path which master directory should be scanned
2935 * @param proc function to call for each entry (will get 'h' for 'cls')
2936 * @param h the 'struct GNUNET_FS_Handle*'
2939 deserialization_master (const char *master_path,
2940 GNUNET_FileNameCallback proc,
2941 struct GNUNET_FS_Handle *h)
2945 dn = get_serialization_file_name (h, master_path, "");
2949 GNUNET_DISK_directory_test (dn))
2950 GNUNET_DISK_directory_scan (dn, proc, h);
2956 * Setup a connection to the file-sharing service.
2958 * @param cfg configuration to use
2959 * @param client_name unique identifier for this client
2960 * @param upcb function to call to notify about FS actions
2961 * @param upcb_cls closure for upcb
2962 * @param flags specific attributes for fs-operations
2963 * @param ... list of optional options, terminated with GNUNET_FS_OPTIONS_END
2964 * @return NULL on error
2966 struct GNUNET_FS_Handle *
2967 GNUNET_FS_start (const struct GNUNET_CONFIGURATION_Handle *cfg,
2968 const char *client_name,
2969 GNUNET_FS_ProgressCallback upcb,
2971 enum GNUNET_FS_Flags flags,
2974 struct GNUNET_FS_Handle *ret;
2975 enum GNUNET_FS_OPTIONS opt;
2978 ret = GNUNET_malloc (sizeof (struct GNUNET_FS_Handle));
2980 ret->client_name = GNUNET_strdup (client_name);
2982 ret->upcb_cls = upcb_cls;
2984 ret->max_parallel_downloads = 1;
2985 ret->max_parallel_requests = 1;
2986 ret->avg_block_latency = GNUNET_TIME_UNIT_MINUTES; /* conservative starting point */
2987 va_start (ap, flags);
2988 while (GNUNET_FS_OPTIONS_END != (opt = va_arg (ap, enum GNUNET_FS_OPTIONS)))
2992 case GNUNET_FS_OPTIONS_DOWNLOAD_PARALLELISM:
2993 ret->max_parallel_downloads = va_arg (ap, unsigned int);
2995 case GNUNET_FS_OPTIONS_REQUEST_PARALLELISM:
2996 ret->max_parallel_requests = va_arg (ap, unsigned int);
3000 GNUNET_free (ret->client_name);
3007 if (0 != (GNUNET_FS_FLAGS_PERSISTENCE & flags))
3009 deserialization_master (GNUNET_FS_SYNC_PATH_MASTER_PUBLISH,
3010 &deserialize_publish_file,
3012 deserialization_master (GNUNET_FS_SYNC_PATH_MASTER_SEARCH,
3013 &deserialize_search_file,
3015 deserialization_master (GNUNET_FS_SYNC_PATH_MASTER_DOWNLOAD,
3016 &deserialize_download_file,
3018 deserialization_master (GNUNET_FS_SYNC_PATH_MASTER_UNINDEX,
3019 &deserialize_unindex_file,
3027 * Close our connection with the file-sharing service.
3028 * The callback given to GNUNET_FS_start will no longer be
3029 * called after this function returns.
3031 * @param h handle that was returned from GNUNET_FS_start
3034 GNUNET_FS_stop (struct GNUNET_FS_Handle *h)
3036 while (h->top_head != NULL)
3037 h->top_head->ssf (h->top_head->ssf_cls);
3038 if (h->queue_job != GNUNET_SCHEDULER_NO_TASK)
3039 GNUNET_SCHEDULER_cancel (h->queue_job);
3040 GNUNET_free (h->client_name);