2 This file is part of GNUnet.
3 (C) 2009 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 2, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file fs/fs_publish.c
23 * @brief publish a file or directory in GNUnet
24 * @see http://gnunet.org/encoding.php3
25 * @author Krista Bennett
26 * @author Christian Grothoff
29 * - code-sharing with unindex (write unindex code)
30 * - indexing cleanup: unindex on failure (can wait)
31 * - persistence support (can wait)
32 * - datastore reservation support (optimization)
33 * - location URIs (publish with anonymity-level zero)
37 #include "gnunet_constants.h"
38 #include "gnunet_signatures.h"
39 #include "gnunet_util_lib.h"
40 #include "gnunet_fs_service.h"
44 #define DEBUG_PUBLISH GNUNET_YES
47 * Maximum allowed size for a KBlock.
49 #define MAX_KBLOCK_SIZE 60000
52 * Maximum allowed size for an SBlock.
54 #define MAX_SBLOCK_SIZE 60000
57 * Main function that performs the upload.
58 * @param cls "struct GNUNET_FS_PublishContext" identifies the upload
59 * @param tc task context
63 const struct GNUNET_SCHEDULER_TaskContext *tc);
67 * Context for "ds_put_cont".
72 * Current publishing context.
74 struct GNUNET_FS_PublishContext *sc;
77 * Specific file with the block.
79 struct GNUNET_FS_FileInformation *p;
82 * Function to run next, if any (can be NULL).
84 GNUNET_SCHEDULER_Task cont;
94 * Fill in all of the generic fields for
97 * @param pc structure to fill in
98 * @param sc overall publishing context
99 * @param p file information for the file being published
100 * @param offset where in the file are we so far
103 make_publish_status (struct GNUNET_FS_ProgressInfo *pi,
104 struct GNUNET_FS_PublishContext *sc,
105 const struct GNUNET_FS_FileInformation *p,
108 pi->value.publish.sc = sc;
109 pi->value.publish.fi = p;
110 pi->value.publish.cctx
112 pi->value.publish.pctx
113 = (NULL == p->dir) ? NULL : p->dir->client_info;
114 pi->value.publish.filename
115 = (p->is_directory) ? p->data.dir.dirname : p->data.file.filename;
116 pi->value.publish.size
117 = (p->is_directory) ? p->data.dir.dir_size : p->data.file.file_size;
118 pi->value.publish.eta
119 = GNUNET_TIME_calculate_eta (p->start_time,
121 pi->value.publish.size);
122 pi->value.publish.completed = offset;
123 pi->value.publish.duration = GNUNET_TIME_absolute_get_duration (p->start_time);
124 pi->value.publish.anonymity = p->anonymity;
129 * Cleanup the publish context, we're done
132 * @param pc struct to clean up after
135 publish_cleanup (struct GNUNET_FS_PublishContext *sc)
137 GNUNET_FS_file_information_destroy (sc->fi, NULL, NULL);
138 GNUNET_FS_namespace_delete (sc->namespace, GNUNET_NO);
139 GNUNET_free_non_null (sc->nid);
140 GNUNET_free_non_null (sc->nuid);
141 GNUNET_DATASTORE_disconnect (sc->dsh, GNUNET_NO);
147 * Function called by the datastore API with
148 * the result from the PUT request.
150 * @param cls our closure
151 * @param success GNUNET_OK on success
152 * @param msg error message (or NULL)
155 ds_put_cont (void *cls,
159 struct PutContCtx *pcc = cls;
160 struct GNUNET_FS_ProgressInfo pi;
162 if (GNUNET_SYSERR == pcc->sc->in_network_wait)
164 /* we were aborted in the meantime,
166 publish_cleanup (pcc->sc);
169 GNUNET_assert (GNUNET_YES == pcc->sc->in_network_wait);
170 pcc->sc->in_network_wait = GNUNET_NO;
171 if (GNUNET_OK != success)
173 GNUNET_asprintf (&pcc->p->emsg,
174 _("Upload failed: %s"),
176 GNUNET_FS_file_information_sync (pcc->p);
177 pi.status = GNUNET_FS_STATUS_PUBLISH_ERROR;
178 make_publish_status (&pi, pcc->sc, pcc->p, 0);
179 pi.value.publish.eta = GNUNET_TIME_UNIT_FOREVER_REL;
180 pi.value.publish.specifics.error.message = pcc->p->emsg;
182 = pcc->sc->h->upcb (pcc->sc->h->upcb_cls,
186 GNUNET_FS_file_information_sync (pcc->p);
187 if (NULL != pcc->cont)
189 = GNUNET_SCHEDULER_add_delayed (pcc->sc->h->sched,
191 GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
192 GNUNET_SCHEDULER_NO_TASK,
193 GNUNET_TIME_UNIT_ZERO,
201 * Generate the callback that signals clients
202 * that a file (or directory) has been completely
205 * @param p the completed upload
206 * @param sc context of the publication
209 signal_publish_completion (struct GNUNET_FS_FileInformation *p,
210 struct GNUNET_FS_PublishContext *sc)
212 struct GNUNET_FS_ProgressInfo pi;
214 pi.status = GNUNET_FS_STATUS_PUBLISH_COMPLETED;
215 make_publish_status (&pi, sc, p,
216 GNUNET_ntohll (p->chk_uri->data.chk.file_length));
217 pi.value.publish.eta = GNUNET_TIME_UNIT_ZERO;
218 pi.value.publish.specifics.completed.chk_uri = p->chk_uri;
220 = sc->h->upcb (sc->h->upcb_cls,
226 * Generate the callback that signals clients
227 * that a file (or directory) has encountered
228 * a problem during publication.
230 * @param p the upload that had trouble
231 * @param sc context of the publication
232 * @param emsg error message
235 signal_publish_error (struct GNUNET_FS_FileInformation *p,
236 struct GNUNET_FS_PublishContext *sc,
239 struct GNUNET_FS_ProgressInfo pi;
241 p->emsg = GNUNET_strdup (emsg);
242 pi.status = GNUNET_FS_STATUS_PUBLISH_ERROR;
243 make_publish_status (&pi, sc, p, 0);
244 pi.value.publish.eta = GNUNET_TIME_UNIT_FOREVER_REL;
245 pi.value.publish.specifics.error.message =emsg;
247 = sc->h->upcb (sc->h->upcb_cls,
253 * We've finished publishing the SBlock as part of a larger upload.
254 * Check the result and complete the larger upload.
256 * @param cls the "struct GNUNET_FS_PublishContext*" of the larger upload
257 * @param uri URI of the published SBlock
258 * @param emsg NULL on success, otherwise error message
261 publish_sblocks_cont (void *cls,
262 const struct GNUNET_FS_Uri *uri,
265 struct GNUNET_FS_PublishContext *sc = cls;
268 signal_publish_error (sc->fi,
273 // FIXME: release the datastore reserve here!
274 signal_publish_completion (sc->fi, sc);
279 * We are almost done publishing the structure,
280 * add SBlocks (if needed).
282 * @param sc overall upload data
285 publish_sblock (struct GNUNET_FS_PublishContext *sc)
287 if (NULL != sc->namespace)
288 GNUNET_FS_publish_sks (sc->h,
294 sc->fi->expirationTime,
298 &publish_sblocks_cont,
301 publish_sblocks_cont (sc, NULL, NULL);
306 * We've finished publishing a KBlock
307 * as part of a larger upload. Check
308 * the result and continue the larger
311 * @param cls the "struct GNUNET_FS_PublishContext*"
312 * of the larger upload
313 * @param uri URI of the published blocks
314 * @param emsg NULL on success, otherwise error message
317 publish_kblocks_cont (void *cls,
318 const struct GNUNET_FS_Uri *uri,
321 struct GNUNET_FS_PublishContext *sc = cls;
322 struct GNUNET_FS_FileInformation *p = sc->fi_pos;
326 signal_publish_error (p, sc, emsg);
328 = GNUNET_SCHEDULER_add_delayed (sc->h->sched,
330 GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
331 GNUNET_SCHEDULER_NO_TASK,
332 GNUNET_TIME_UNIT_ZERO,
337 GNUNET_FS_file_information_sync (p);
339 signal_publish_completion (p, sc);
340 /* move on to next file */
342 sc->fi_pos = p->next;
346 = GNUNET_SCHEDULER_add_delayed (sc->h->sched,
348 GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
349 GNUNET_SCHEDULER_NO_TASK,
350 GNUNET_TIME_UNIT_ZERO,
357 * Function called by the tree encoder to obtain
358 * a block of plaintext data (for the lowest level
361 * @param cls our publishing context
362 * @param offset identifies which block to get
363 * @param max (maximum) number of bytes to get; returning
364 * fewer will also cause errors
365 * @param buf where to copy the plaintext buffer
366 * @param emsg location to store an error message (on error)
367 * @return number of bytes copied to buf, 0 on error
370 block_reader (void *cls,
376 struct GNUNET_FS_PublishContext *sc = cls;
377 struct GNUNET_FS_FileInformation *p;
384 pt_size = GNUNET_MIN(max,
385 p->data.dir.dir_size - offset);
386 dd = p->data.dir.dir_data;
393 pt_size = GNUNET_MIN(max,
394 p->data.file.file_size - offset);
396 p->data.file.reader (p->data.file.reader_cls,
408 * The tree encoder has finished processing a
409 * file. Call it's finish method and deal with
412 * @param cls our publishing context
413 * @param tc scheduler's task context (not used)
416 encode_cont (void *cls,
417 const struct GNUNET_SCHEDULER_TaskContext *tc)
419 struct GNUNET_FS_PublishContext *sc = cls;
420 struct GNUNET_FS_FileInformation *p;
421 struct GNUNET_FS_ProgressInfo pi;
425 GNUNET_FS_tree_encoder_finish (p->te,
431 GNUNET_asprintf (&p->emsg,
432 _("Upload failed: %s"),
435 GNUNET_FS_file_information_sync (p);
436 pi.status = GNUNET_FS_STATUS_PUBLISH_ERROR;
437 make_publish_status (&pi, sc, p, 0);
438 pi.value.publish.eta = GNUNET_TIME_UNIT_FOREVER_REL;
439 pi.value.publish.specifics.error.message = p->emsg;
441 = sc->h->upcb (sc->h->upcb_cls,
444 /* continue with main */
446 = GNUNET_SCHEDULER_add_delayed (sc->h->sched,
448 GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
449 GNUNET_SCHEDULER_NO_TASK,
450 GNUNET_TIME_UNIT_ZERO,
457 * Function called asking for the current (encoded)
458 * block to be processed. After processing the
459 * client should either call "GNUNET_FS_tree_encode_next"
460 * or (on error) "GNUNET_FS_tree_encode_finish".
463 * @param query the query for the block (key for lookup in the datastore)
464 * @param type type of the block (IBLOCK or DBLOCK)
465 * @param block the (encrypted) block
466 * @param block_size size of block (in bytes)
469 block_proc (void *cls,
470 const GNUNET_HashCode *query,
476 struct GNUNET_FS_PublishContext *sc = cls;
477 struct GNUNET_FS_FileInformation *p;
478 struct PutContCtx * dpc_cls;
479 struct OnDemandBlock odb;
485 = GNUNET_SCHEDULER_add_delayed (sc->h->sched,
487 GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
488 GNUNET_SCHEDULER_NO_TASK,
489 GNUNET_TIME_UNIT_ZERO,
495 GNUNET_assert (GNUNET_NO == sc->in_network_wait);
496 sc->in_network_wait = GNUNET_YES;
497 dpc_cls = GNUNET_malloc(sizeof(struct PutContCtx));
498 dpc_cls->cont = &do_upload;
499 dpc_cls->cont_cls = sc;
501 if ( (p->is_directory) &&
502 (p->data.file.do_index) &&
503 (type == GNUNET_DATASTORE_BLOCKTYPE_DBLOCK) )
506 odb.file_id = p->data.file.file_id;
507 GNUNET_DATASTORE_put (sc->dsh,
510 sizeof(struct OnDemandBlock),
512 GNUNET_DATASTORE_BLOCKTYPE_ONDEMAND,
516 GNUNET_CONSTANTS_SERVICE_TIMEOUT,
521 GNUNET_DATASTORE_put (sc->dsh,
530 GNUNET_CONSTANTS_SERVICE_TIMEOUT,
537 * Function called with information about our
538 * progress in computing the tree encoding.
541 * @param offset where are we in the file
542 * @param pt_block plaintext of the currently processed block
543 * @param pt_size size of pt_block
544 * @param depth depth of the block in the tree
547 progress_proc (void *cls,
549 const void *pt_block,
553 struct GNUNET_FS_PublishContext *sc = cls;
554 struct GNUNET_FS_FileInformation *p;
555 struct GNUNET_FS_ProgressInfo pi;
558 pi.status = GNUNET_FS_STATUS_PUBLISH_PROGRESS;
559 make_publish_status (&pi, sc, p, offset);
560 pi.value.publish.specifics.progress.data = pt_block;
561 pi.value.publish.specifics.progress.offset = offset;
562 pi.value.publish.specifics.progress.data_len = pt_size;
563 pi.value.publish.specifics.progress.depth = depth;
565 = sc->h->upcb (sc->h->upcb_cls,
571 * We are uploading a file or directory; load (if necessary) the next
572 * block into memory, encrypt it and send it to the FS service. Then
573 * continue with the main task.
575 * @param sc overall upload data
578 publish_content (struct GNUNET_FS_PublishContext *sc)
580 struct GNUNET_FS_FileInformation *p;
582 struct GNUNET_FS_DirectoryBuilder *db;
583 struct GNUNET_FS_FileInformation *dirpos;
592 db = GNUNET_FS_directory_builder_create (p->meta);
593 dirpos = p->data.dir.entries;
594 while (NULL != dirpos)
596 if (dirpos->is_directory)
598 raw_data = dirpos->data.dir.dir_data;
599 dirpos->data.dir.dir_data = NULL;
604 if ( (dirpos->data.file.file_size < MAX_INLINE_SIZE) &&
605 (dirpos->data.file.file_size > 0) )
607 raw_data = GNUNET_malloc (dirpos->data.file.file_size);
609 if (dirpos->data.file.file_size !=
610 dirpos->data.file.reader (dirpos->data.file.reader_cls,
612 dirpos->data.file.file_size,
616 GNUNET_free_non_null (emsg);
617 GNUNET_free (raw_data);
622 GNUNET_FS_directory_builder_add (db,
626 GNUNET_free_non_null (raw_data);
627 dirpos = dirpos->next;
629 GNUNET_FS_directory_builder_finish (db,
630 &p->data.dir.dir_size,
631 &p->data.dir.dir_data);
633 size = (p->is_directory)
634 ? p->data.dir.dir_size
635 : p->data.file.file_size;
636 p->te = GNUNET_FS_tree_encoder_create (sc->h,
645 GNUNET_FS_tree_encoder_next (p->te);
650 * Process the response (or lack thereof) from
651 * the "fs" service to our 'start index' request.
653 * @param cls closure (of type "struct GNUNET_FS_PublishContext*"_)
654 * @param msg the response we got
657 process_index_start_response (void *cls,
658 const struct GNUNET_MessageHeader *msg)
660 struct GNUNET_FS_PublishContext *sc = cls;
661 struct GNUNET_FS_FileInformation *p;
665 GNUNET_CLIENT_disconnect (sc->client);
670 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
671 _("Can not index file `%s': %s. Will try to insert instead.\n"),
672 p->data.file.filename,
673 _("timeout on index-start request to `fs' service"));
674 p->data.file.do_index = GNUNET_NO;
675 publish_content (sc);
678 if (ntohs (msg->type) != GNUNET_MESSAGE_TYPE_FS_INDEX_START_OK)
680 msize = ntohs (msg->size);
681 emsg = (const char *) &msg[1];
682 if ( (msize <= sizeof (struct GNUNET_MessageHeader)) ||
683 (emsg[msize - sizeof(struct GNUNET_MessageHeader) - 1] != '\0') )
684 emsg = gettext_noop ("unknown error");
685 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
686 _("Can not index file `%s': %s. Will try to insert instead.\n"),
687 p->data.file.filename,
689 p->data.file.do_index = GNUNET_NO;
690 publish_content (sc);
693 /* success! continue with indexing */
694 publish_content (sc);
699 #include <sys/statvfs.h>
703 * Function called once the hash computation over an
704 * indexed file has completed.
706 * @param cls closure, our publishing context
707 * @param res resulting hash, NULL on error
710 hash_for_index_cb (void *cls,
711 const GNUNET_HashCode *
714 struct GNUNET_FS_PublishContext *sc = cls;
715 struct GNUNET_FS_FileInformation *p;
716 struct IndexStartMessage *ism;
718 struct GNUNET_CLIENT_Connection *client;
727 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
728 _("Can not index file `%s': %s. Will try to insert instead.\n"),
729 p->data.file.filename,
730 _("failed to compute hash"));
731 p->data.file.do_index = GNUNET_NO;
732 publish_content (sc);
735 slen = strlen (p->data.file.filename) + 1;
736 if (slen > GNUNET_SERVER_MAX_MESSAGE_SIZE - sizeof(struct IndexStartMessage))
738 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
739 _("Can not index file `%s': %s. Will try to insert instead.\n"),
740 p->data.file.filename,
741 _("filename too long"));
742 p->data.file.do_index = GNUNET_NO;
743 publish_content (sc);
746 client = GNUNET_CLIENT_connect (sc->h->sched,
751 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
752 _("Can not index file `%s': %s. Will try to insert instead.\n"),
753 p->data.file.filename,
754 _("could not connect to `fs' service"));
755 p->data.file.do_index = GNUNET_NO;
756 publish_content (sc);
759 p->data.file.file_id = *res;
760 ism = GNUNET_malloc (sizeof(struct IndexStartMessage) +
762 ism->header.size = htons(sizeof(struct IndexStartMessage) +
764 ism->header.type = htons(GNUNET_MESSAGE_TYPE_FS_INDEX_START);
765 /* FIXME: activate this on other OSes that
766 support it (or something very similar; make
767 sure to also adjust corresponding code
768 on the service-side) */
769 /* FIXME: the block below should probably be
770 abstracted into a function in the DISK API */
772 if ( (0 == stat(p->data.file.filename,
774 (0 == statvfs (p->data.file.filename,
777 ism->device = htonl ((uint32_t) fbuf.f_fsid);
778 ism->inode = GNUNET_htonll( (uint64_t) sbuf.st_ino);
782 p->data.file.filename,
785 GNUNET_CLIENT_transmit_and_get_response (client,
787 GNUNET_TIME_UNIT_FOREVER_REL,
788 &process_index_start_response,
795 * Main function that performs the upload.
796 * @param cls "struct GNUNET_FS_PublishContext" identifies the upload
797 * @param tc task context
800 do_upload (void *cls,
801 const struct GNUNET_SCHEDULER_TaskContext *tc)
803 struct GNUNET_FS_PublishContext *sc = cls;
804 struct GNUNET_FS_ProgressInfo pi;
805 struct GNUNET_FS_FileInformation *p;
808 sc->upload_task = GNUNET_SCHEDULER_NO_TASK;
812 /* upload of entire hierarchy complete,
813 publish namespace entries */
817 /* find starting position */
818 while ( (p->is_directory) &&
819 (NULL != p->data.dir.entries) &&
821 (NULL == p->data.dir.entries->chk_uri) )
823 p = p->data.dir.entries;
829 /* error with current file, abort all
830 related files as well! */
831 while (NULL != p->dir)
833 fn = GNUNET_CONTAINER_meta_data_get_by_type (p->meta,
836 GNUNET_asprintf (&p->emsg,
837 _("Recursive upload failed at `%s'"),
840 GNUNET_FS_file_information_sync (p);
841 pi.status = GNUNET_FS_STATUS_PUBLISH_ERROR;
842 make_publish_status (&pi, sc, p, 0);
843 pi.value.publish.eta = GNUNET_TIME_UNIT_FOREVER_REL;
844 pi.value.publish.specifics.error.message = p->emsg;
846 = sc->h->upcb (sc->h->upcb_cls,
851 /* handle completion */
852 if (NULL != p->chk_uri)
854 /* upload of "p" complete, publish KBlocks! */
855 GNUNET_FS_publish_ksk (sc->h,
863 &publish_kblocks_cont,
867 if ( (!p->is_directory) &&
868 (p->data.file.do_index) )
870 if (NULL == p->data.file.filename)
872 p->data.file.do_index = GNUNET_NO;
873 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
874 _("Can not index file `%s': %s. Will try to insert instead.\n"),
876 _("needs to be an actual file"));
877 publish_content (sc);
880 GNUNET_CRYPTO_hash_file (sc->h->sched,
881 GNUNET_SCHEDULER_PRIORITY_IDLE,
883 p->data.file.filename,
889 publish_content (sc);
894 * Signal the FS's progress function that we are starting
897 * @param cls closure (of type "struct GNUNET_FS_PublishContext*")
898 * @param fi the entry in the publish-structure
899 * @param length length of the file or directory
900 * @param meta metadata for the file or directory (can be modified)
901 * @param uri pointer to the keywords that will be used for this entry (can be modified)
902 * @param anonymity pointer to selected anonymity level (can be modified)
903 * @param priority pointer to selected priority (can be modified)
904 * @param expirationTime pointer to selected expiration time (can be modified)
905 * @param client_info pointer to client context set upon creation (can be modified)
906 * @return GNUNET_OK to continue (always)
909 fip_signal_start(void *cls,
910 struct GNUNET_FS_FileInformation *fi,
912 struct GNUNET_CONTAINER_MetaData *meta,
913 struct GNUNET_FS_Uri **uri,
916 struct GNUNET_TIME_Absolute *expirationTime,
919 struct GNUNET_FS_PublishContext *sc = cls;
920 struct GNUNET_FS_ProgressInfo pi;
922 pi.status = GNUNET_FS_STATUS_PUBLISH_START;
923 make_publish_status (&pi, sc, fi, 0);
924 *client_info = sc->h->upcb (sc->h->upcb_cls,
931 * Publish a file or directory.
933 * @param h handle to the file sharing subsystem
934 * @param ctx initial value to use for the '*ctx'
935 * in the callback (for the GNUNET_FS_STATUS_PUBLISH_START event).
936 * @param fi information about the file or directory structure to publish
937 * @param namespace namespace to publish the file in, NULL for no namespace
938 * @param nid identifier to use for the publishd content in the namespace
939 * (can be NULL, must be NULL if namespace is NULL)
940 * @param nuid update-identifier that will be used for future updates
941 * (can be NULL, must be NULL if namespace or nid is NULL)
942 * @param options options for the publication
943 * @return context that can be used to control the publish operation
945 struct GNUNET_FS_PublishContext *
946 GNUNET_FS_publish_start (struct GNUNET_FS_Handle *h,
948 struct GNUNET_FS_FileInformation *fi,
949 struct GNUNET_FS_Namespace *namespace,
952 enum GNUNET_FS_PublishOptions options)
954 struct GNUNET_FS_PublishContext *ret;
955 struct GNUNET_DATASTORE_Handle *dsh;
957 if (0 == (options & GNUNET_FS_PUBLISH_OPTION_SIMULATE_ONLY))
959 dsh = GNUNET_DATASTORE_connect (h->cfg,
968 ret = GNUNET_malloc (sizeof (struct GNUNET_FS_PublishContext));
971 ret->client_ctx = ctx;
973 ret->namespace = namespace;
974 if (namespace != NULL)
977 GNUNET_assert (NULL != nid);
978 ret->nid = GNUNET_strdup (nid);
980 ret->nuid = GNUNET_strdup (nuid);
982 // FIXME: make upload persistent!
985 GNUNET_FS_file_information_inspect (ret->fi,
988 ret->fi_pos = ret->fi;
990 // FIXME: calculate space needed for "fi"
991 // and reserve as first task (then trigger
992 // "do_upload" from that continuation)!
994 = GNUNET_SCHEDULER_add_delayed (h->sched,
996 GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
997 GNUNET_SCHEDULER_NO_TASK,
998 GNUNET_TIME_UNIT_ZERO,
1006 * Signal the FS's progress function that we are stopping
1009 * @param cls closure (of type "struct GNUNET_FS_PublishContext*")
1010 * @param fi the entry in the publish-structure
1011 * @param length length of the file or directory
1012 * @param meta metadata for the file or directory (can be modified)
1013 * @param uri pointer to the keywords that will be used for this entry (can be modified)
1014 * @param anonymity pointer to selected anonymity level (can be modified)
1015 * @param priority pointer to selected priority (can be modified)
1016 * @param expirationTime pointer to selected expiration time (can be modified)
1017 * @param client_info pointer to client context set upon creation (can be modified)
1018 * @return GNUNET_OK to continue (always)
1021 fip_signal_stop(void *cls,
1022 struct GNUNET_FS_FileInformation *fi,
1024 struct GNUNET_CONTAINER_MetaData *meta,
1025 struct GNUNET_FS_Uri **uri,
1026 uint32_t *anonymity,
1028 struct GNUNET_TIME_Absolute *expirationTime,
1031 struct GNUNET_FS_PublishContext*sc = cls;
1032 struct GNUNET_FS_ProgressInfo pi;
1035 off = (fi->chk_uri == NULL) ? 0 : length;
1036 pi.status = GNUNET_FS_STATUS_PUBLISH_STOPPED;
1037 make_publish_status (&pi, sc, fi, off);
1038 GNUNET_break (NULL ==
1039 sc->h->upcb (sc->h->upcb_cls,
1041 *client_info = NULL;
1047 * Stop an upload. Will abort incomplete uploads (but
1048 * not remove blocks that have already been publishd) or
1049 * simply clean up the state for completed uploads.
1051 * @param sc context for the upload to stop
1054 GNUNET_FS_publish_stop (struct GNUNET_FS_PublishContext *sc)
1056 if (GNUNET_SCHEDULER_NO_TASK != sc->upload_task)
1057 GNUNET_SCHEDULER_cancel (sc->h->sched, sc->upload_task);
1058 // FIXME: remove from persistence DB (?) --- think more about
1059 // shutdown / persistent-resume APIs!!!
1060 GNUNET_FS_file_information_inspect (sc->fi,
1063 if (GNUNET_YES == sc->in_network_wait)
1065 sc->in_network_wait = GNUNET_SYSERR;
1068 publish_cleanup (sc);
1073 * Context for the KSK publication.
1075 struct PublishKskContext
1081 struct GNUNET_FS_Uri *ksk_uri;
1084 * Global FS context.
1086 struct GNUNET_FS_Handle *h;
1089 * The master block that we are sending
1090 * (in plaintext), has "mdsize+slen" more
1091 * bytes than the struct would suggest.
1096 * Buffer of the same size as "kb" for
1097 * the encrypted version.
1102 * Handle to the datastore, NULL if we are just
1105 struct GNUNET_DATASTORE_Handle *dsh;
1108 * Function to call once we're done.
1110 GNUNET_FS_PublishContinuation cont;
1118 * When should the KBlocks expire?
1120 struct GNUNET_TIME_Absolute expirationTime;
1123 * Size of the serialized metadata.
1128 * Size of the (CHK) URI as a string.
1133 * Keyword that we are currently processing.
1138 * Anonymity level for the KBlocks.
1143 * Priority for the KBlocks.
1150 * Continuation of "GNUNET_FS_publish_ksk" that performs
1151 * the actual publishing operation (iterating over all
1154 * @param cls closure of type "struct PublishKskContext*"
1158 publish_ksk_cont (void *cls,
1159 const struct GNUNET_SCHEDULER_TaskContext *tc);
1163 * Function called by the datastore API with
1164 * the result from the PUT request.
1166 * @param cls closure of type "struct PublishKskContext*"
1167 * @param success GNUNET_OK on success
1168 * @param msg error message (or NULL)
1171 kb_put_cont (void *cls,
1175 struct PublishKskContext *pkc = cls;
1177 if (GNUNET_OK != success)
1179 GNUNET_DATASTORE_disconnect (pkc->dsh, GNUNET_NO);
1180 GNUNET_free (pkc->cpy);
1181 GNUNET_free (pkc->kb);
1182 pkc->cont (pkc->cont_cls,
1185 GNUNET_FS_uri_destroy (pkc->ksk_uri);
1189 GNUNET_SCHEDULER_add_continuation (pkc->h->sched,
1193 GNUNET_SCHEDULER_REASON_PREREQ_DONE);
1198 * Continuation of "GNUNET_FS_publish_ksk" that performs
1199 * the actual publishing operation (iterating over all
1202 * @param cls closure of type "struct PublishKskContext*"
1206 publish_ksk_cont (void *cls,
1207 const struct GNUNET_SCHEDULER_TaskContext *tc)
1209 struct PublishKskContext *pkc = cls;
1210 const char *keyword;
1211 GNUNET_HashCode key;
1212 GNUNET_HashCode query;
1213 struct GNUNET_CRYPTO_AesSessionKey skey;
1214 struct GNUNET_CRYPTO_AesInitializationVector iv;
1215 struct GNUNET_CRYPTO_RsaPrivateKey *pk;
1218 if ( (pkc->i == pkc->ksk_uri->data.ksk.keywordCount) ||
1219 (NULL == pkc->dsh) )
1221 if (NULL != pkc->dsh)
1222 GNUNET_DATASTORE_disconnect (pkc->dsh, GNUNET_NO);
1223 GNUNET_free (pkc->cpy);
1224 GNUNET_free (pkc->kb);
1225 pkc->cont (pkc->cont_cls,
1228 GNUNET_FS_uri_destroy (pkc->ksk_uri);
1232 keyword = pkc->ksk_uri->data.ksk.keywords[pkc->i++];
1233 /* first character of keyword indicates if it is
1234 mandatory or not -- ignore for hashing */
1235 GNUNET_CRYPTO_hash (&keyword[1], strlen (&keyword[1]), &key);
1236 GNUNET_CRYPTO_hash_to_aes_key (&key, &skey, &iv);
1237 GNUNET_CRYPTO_aes_encrypt (&pkc->kb[1],
1238 pkc->slen + pkc->mdsize,
1242 pk = GNUNET_CRYPTO_rsa_key_create_from_hash (&key);
1243 GNUNET_CRYPTO_rsa_key_get_public (pk, &pkc->cpy->keyspace);
1244 GNUNET_CRYPTO_hash (&pkc->cpy->keyspace,
1245 sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
1247 GNUNET_assert (GNUNET_OK ==
1248 GNUNET_CRYPTO_rsa_sign (pk,
1250 &pkc->cpy->signature));
1251 GNUNET_CRYPTO_rsa_key_free (pk);
1252 GNUNET_DATASTORE_put (pkc->dsh,
1256 sizeof (struct KBlock) +
1259 GNUNET_DATASTORE_BLOCKTYPE_KBLOCK,
1262 pkc->expirationTime,
1263 GNUNET_CONSTANTS_SERVICE_TIMEOUT,
1270 * Publish a CHK under various keywords on GNUnet.
1272 * @param h handle to the file sharing subsystem
1273 * @param ksk_uri keywords to use
1274 * @param meta metadata to use
1275 * @param uri URI to refer to in the KBlock
1276 * @param expirationTime when the KBlock expires
1277 * @param anonymity anonymity level for the KBlock
1278 * @param priority priority for the KBlock
1279 * @param options publication options
1280 * @param cont continuation
1281 * @param cont_cls closure for cont
1284 GNUNET_FS_publish_ksk (struct GNUNET_FS_Handle *h,
1285 struct GNUNET_FS_Uri *ksk_uri,
1286 struct GNUNET_CONTAINER_MetaData *meta,
1287 struct GNUNET_FS_Uri *uri,
1288 struct GNUNET_TIME_Absolute expirationTime,
1291 enum GNUNET_FS_PublishOptions options,
1292 GNUNET_FS_PublishContinuation cont,
1295 struct PublishKskContext *pkc;
1300 pkc = GNUNET_malloc (sizeof (struct PublishKskContext));
1302 pkc->expirationTime = expirationTime;
1303 pkc->anonymity = anonymity;
1304 pkc->priority = priority;
1306 pkc->cont_cls = cont_cls;
1307 if (0 == (options & GNUNET_FS_PUBLISH_OPTION_SIMULATE_ONLY))
1309 pkc->dsh = GNUNET_DATASTORE_connect (h->cfg,
1311 if (pkc->dsh == NULL)
1313 cont (cont_cls, NULL, _("Could not connect to datastore."));
1318 pkc->mdsize = GNUNET_CONTAINER_meta_data_get_serialized_size (meta,
1319 GNUNET_CONTAINER_META_DATA_SERIALIZE_PART);
1320 GNUNET_assert (pkc->mdsize >= 0);
1321 uris = GNUNET_FS_uri_to_string (uri);
1322 pkc->slen = strlen (uris) + 1;
1323 size = pkc->mdsize + sizeof (struct KBlock) + pkc->slen;
1324 if (size > MAX_KBLOCK_SIZE)
1326 size = MAX_KBLOCK_SIZE;
1327 pkc->mdsize = size - sizeof (struct KBlock) - pkc->slen;
1329 pkc->kb = GNUNET_malloc (size);
1330 kbe = (char *) &pkc->kb[1];
1331 memcpy (kbe, uris, pkc->slen);
1333 pkc->mdsize = GNUNET_CONTAINER_meta_data_serialize (meta,
1336 GNUNET_CONTAINER_META_DATA_SERIALIZE_PART);
1337 if (pkc->mdsize == -1)
1341 GNUNET_free (pkc->kb);
1342 if (pkc->dsh != NULL)
1343 GNUNET_DATASTORE_disconnect (pkc->dsh, GNUNET_NO);
1344 cont (cont_cls, NULL, _("Internal error."));
1348 size = sizeof (struct KBlock) + pkc->slen + pkc->mdsize;
1350 pkc->cpy = GNUNET_malloc (size);
1351 pkc->cpy->purpose.size = htonl (sizeof (struct GNUNET_CRYPTO_RsaSignaturePurpose) +
1352 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded) +
1355 pkc->cpy->purpose.purpose = htonl(GNUNET_SIGNATURE_PURPOSE_FS_KBLOCK);
1356 pkc->ksk_uri = GNUNET_FS_uri_dup (ksk_uri);
1357 GNUNET_SCHEDULER_add_continuation (h->sched,
1361 GNUNET_SCHEDULER_REASON_PREREQ_DONE);
1366 * Context for the SKS publication.
1368 struct PublishSksContext
1372 * Global FS context.
1374 struct GNUNET_FS_Uri *uri;
1377 * Handle to the datastore.
1379 struct GNUNET_DATASTORE_Handle *dsh;
1382 * Function to call once we're done.
1384 GNUNET_FS_PublishContinuation cont;
1395 * Function called by the datastore API with
1396 * the result from the PUT (SBlock) request.
1398 * @param cls closure of type "struct PublishSksContext*"
1399 * @param success GNUNET_OK on success
1400 * @param msg error message (or NULL)
1403 sb_put_cont (void *cls,
1407 struct PublishSksContext *psc = cls;
1409 if (NULL != psc->dsh)
1410 GNUNET_DATASTORE_disconnect (psc->dsh, GNUNET_NO);
1411 if (GNUNET_OK != success)
1412 psc->cont (psc->cont_cls,
1416 psc->cont (psc->cont_cls,
1419 GNUNET_FS_uri_destroy (psc->uri);
1425 * Publish an SBlock on GNUnet.
1427 * @param h handle to the file sharing subsystem
1428 * @param namespace namespace to publish in
1429 * @param identifier identifier to use
1430 * @param update update identifier to use
1431 * @param meta metadata to use
1432 * @param uri URI to refer to in the SBlock
1433 * @param expirationTime when the SBlock expires
1434 * @param anonymity anonymity level for the SBlock
1435 * @param priority priority for the SBlock
1436 * @param options publication options
1437 * @param cont continuation
1438 * @param cont_cls closure for cont
1441 GNUNET_FS_publish_sks (struct GNUNET_FS_Handle *h,
1442 struct GNUNET_FS_Namespace *namespace,
1443 const char *identifier,
1445 struct GNUNET_CONTAINER_MetaData *meta,
1446 struct GNUNET_FS_Uri *uri,
1447 struct GNUNET_TIME_Absolute expirationTime,
1450 enum GNUNET_FS_PublishOptions options,
1451 GNUNET_FS_PublishContinuation cont,
1454 struct PublishSksContext *psc;
1455 struct GNUNET_CRYPTO_AesSessionKey sk;
1456 struct GNUNET_CRYPTO_AesInitializationVector iv;
1457 struct GNUNET_FS_Uri *sks_uri;
1465 struct SBlock *sb_enc;
1467 GNUNET_HashCode key; /* hash of thisId = key */
1468 GNUNET_HashCode id; /* hash of hc = identifier */
1470 uris = GNUNET_FS_uri_to_string (uri);
1471 slen = strlen (uris) + 1;
1472 idlen = strlen (identifier);
1475 nidlen = strlen (update) + 1;
1476 mdsize = GNUNET_CONTAINER_meta_data_get_serialized_size (meta,
1477 GNUNET_CONTAINER_META_DATA_SERIALIZE_PART);
1479 size = sizeof (struct SBlock) + slen + nidlen + mdsize;
1480 if (size > MAX_SBLOCK_SIZE)
1482 size = MAX_SBLOCK_SIZE;
1483 mdsize = size - (sizeof (struct SBlock) + slen + nidlen);
1485 sb = GNUNET_malloc (sizeof (struct SBlock) + size);
1486 dest = (char *) &sb[1];
1487 memcpy (dest, update, nidlen);
1489 memcpy (dest, uris, slen);
1491 mdsize = GNUNET_CONTAINER_meta_data_serialize (meta,
1494 GNUNET_CONTAINER_META_DATA_SERIALIZE_PART);
1502 _("Internal error."));
1505 size = sizeof (struct SBlock) + mdsize + slen + nidlen;
1506 sb_enc = GNUNET_malloc (sizeof (struct SBlock) + size);
1507 GNUNET_CRYPTO_hash (identifier, idlen, &key);
1508 GNUNET_CRYPTO_hash (&key, sizeof (GNUNET_HashCode), &id);
1509 sks_uri = GNUNET_malloc (sizeof (struct GNUNET_FS_Uri));
1510 sks_uri->type = sks;
1511 GNUNET_CRYPTO_rsa_key_get_public (namespace->key, &sb_enc->subspace);
1512 GNUNET_CRYPTO_hash (&sb_enc->subspace,
1513 sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
1514 &sks_uri->data.sks.namespace);
1515 sks_uri->data.sks.identifier = GNUNET_strdup (identifier);
1516 GNUNET_CRYPTO_hash_xor (&id,
1517 &sks_uri->data.sks.namespace,
1518 &sb_enc->identifier);
1519 GNUNET_CRYPTO_hash_to_aes_key (&key, &sk, &iv);
1520 GNUNET_CRYPTO_aes_encrypt (&sb[1],
1521 size - sizeof (struct SBlock),
1526 sb_enc->purpose.purpose = htonl (GNUNET_SIGNATURE_PURPOSE_FS_SBLOCK);
1527 sb_enc->purpose.size = htonl(slen + mdsize + nidlen
1528 + sizeof(struct SBlock)
1529 - sizeof(struct GNUNET_CRYPTO_RsaSignature));
1530 GNUNET_assert (GNUNET_OK ==
1531 GNUNET_CRYPTO_rsa_sign (namespace->key,
1533 &sb_enc->signature));
1534 psc = GNUNET_malloc (sizeof(struct PublishSksContext));
1537 psc->cont_cls = cont_cls;
1538 if (0 != (options & GNUNET_FS_PUBLISH_OPTION_SIMULATE_ONLY))
1540 GNUNET_free (sb_enc);
1546 psc->dsh = GNUNET_DATASTORE_connect (h->cfg, h->sched);
1547 if (NULL == psc->dsh)
1549 GNUNET_free (sb_enc);
1552 _("Failed to connect to datastore."));
1556 GNUNET_DATASTORE_put (psc->dsh,
1561 GNUNET_DATASTORE_BLOCKTYPE_SBLOCK,
1565 GNUNET_CONSTANTS_SERVICE_TIMEOUT,
1568 GNUNET_free (sb_enc);
1572 /* end of fs_publish.c */