2 This file is part of GNUnet.
3 (C) 2009, 2010 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 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.
22 * @file fs/fs_publish.c
23 * @brief publish a file or directory in GNUnet
24 * @see http://gnunet.org/encoding
25 * @author Krista Bennett
26 * @author Christian Grothoff
30 #include "gnunet_constants.h"
31 #include "gnunet_signatures.h"
32 #include "gnunet_util_lib.h"
33 #include "gnunet_fs_service.h"
37 #define DEBUG_PUBLISH GNUNET_NO
41 * Context for "ds_put_cont".
46 * Current publishing context.
48 struct GNUNET_FS_PublishContext *sc;
51 * Specific file with the block.
53 struct GNUNET_FS_FileInformation *p;
56 * Function to run next, if any (can be NULL).
58 GNUNET_SCHEDULER_Task cont;
68 * Fill in all of the generic fields for
69 * a publish event and call the callback.
71 * @param pi structure to fill in
72 * @param sc overall publishing context
73 * @param p file information for the file being published
74 * @param offset where in the file are we so far
75 * @return value returned from callback
78 GNUNET_FS_publish_make_status_ (struct GNUNET_FS_ProgressInfo *pi,
79 struct GNUNET_FS_PublishContext *sc,
80 const struct GNUNET_FS_FileInformation *p,
83 pi->value.publish.pc = sc;
84 pi->value.publish.fi = p;
85 pi->value.publish.cctx
87 pi->value.publish.pctx
88 = (NULL == p->dir) ? NULL : p->dir->client_info;
89 pi->value.publish.filename = p->filename;
90 pi->value.publish.size
91 = (p->is_directory) ? p->data.dir.dir_size : p->data.file.file_size;
93 = GNUNET_TIME_calculate_eta (p->start_time,
95 pi->value.publish.size);
96 pi->value.publish.completed = offset;
97 pi->value.publish.duration = GNUNET_TIME_absolute_get_duration (p->start_time);
98 pi->value.publish.anonymity = p->anonymity;
99 return sc->h->upcb (sc->h->upcb_cls,
105 * Cleanup the publish context, we're done with it.
107 * @param cls struct to clean up after
108 * @param tc scheduler context
111 publish_cleanup (void *cls,
112 const struct GNUNET_SCHEDULER_TaskContext *tc)
114 struct GNUNET_FS_PublishContext *pc = cls;
118 GNUNET_CRYPTO_hash_file_cancel (pc->fhc);
121 GNUNET_FS_file_information_destroy (pc->fi, NULL, NULL);
122 if (pc->namespace != NULL)
123 GNUNET_FS_namespace_delete (pc->namespace, GNUNET_NO);
124 GNUNET_free_non_null (pc->nid);
125 GNUNET_free_non_null (pc->nuid);
126 GNUNET_free_non_null (pc->serialization);
129 GNUNET_DATASTORE_disconnect (pc->dsh, GNUNET_NO);
132 if (pc->client != NULL)
133 GNUNET_CLIENT_disconnect (pc->client, GNUNET_NO);
139 * Function called by the datastore API with
140 * the result from the PUT request.
142 * @param cls our closure
143 * @param success GNUNET_OK on success
144 * @param msg error message (or NULL)
147 ds_put_cont (void *cls,
151 struct PutContCtx *pcc = cls;
152 struct GNUNET_FS_ProgressInfo pi;
154 if (GNUNET_SYSERR == pcc->sc->in_network_wait)
156 /* we were aborted in the meantime, finish shutdown! */
157 GNUNET_SCHEDULER_add_continuation (&publish_cleanup,
159 GNUNET_SCHEDULER_REASON_PREREQ_DONE);
163 GNUNET_assert (GNUNET_YES == pcc->sc->in_network_wait);
164 pcc->sc->in_network_wait = GNUNET_NO;
165 if (GNUNET_OK != success)
167 GNUNET_asprintf (&pcc->p->emsg,
168 _("Publishing failed: %s"),
170 pi.status = GNUNET_FS_STATUS_PUBLISH_ERROR;
171 pi.value.publish.eta = GNUNET_TIME_UNIT_FOREVER_REL;
172 pi.value.publish.specifics.error.message = pcc->p->emsg;
173 pcc->p->client_info = GNUNET_FS_publish_make_status_ (&pi, pcc->sc, pcc->p, 0);
174 if ( (pcc->p->is_directory == GNUNET_NO) &&
175 (pcc->p->filename != NULL) &&
176 (pcc->p->data.file.do_index == GNUNET_YES) )
178 /* run unindex to clean up */
179 GNUNET_FS_unindex_start (pcc->sc->h,
184 if (NULL != pcc->cont)
186 = GNUNET_SCHEDULER_add_with_priority (GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
194 * Generate the callback that signals clients
195 * that a file (or directory) has been completely
198 * @param p the completed upload
199 * @param sc context of the publication
202 signal_publish_completion (struct GNUNET_FS_FileInformation *p,
203 struct GNUNET_FS_PublishContext *sc)
205 struct GNUNET_FS_ProgressInfo pi;
207 pi.status = GNUNET_FS_STATUS_PUBLISH_COMPLETED;
208 pi.value.publish.eta = GNUNET_TIME_UNIT_ZERO;
209 pi.value.publish.specifics.completed.chk_uri = p->chk_uri;
210 p->client_info = GNUNET_FS_publish_make_status_ (&pi, sc, p,
211 GNUNET_ntohll (p->chk_uri->data.chk.file_length));
216 * Generate the callback that signals clients
217 * that a file (or directory) has encountered
218 * a problem during publication.
220 * @param p the upload that had trouble
221 * @param sc context of the publication
222 * @param emsg error message
225 signal_publish_error (struct GNUNET_FS_FileInformation *p,
226 struct GNUNET_FS_PublishContext *sc,
229 struct GNUNET_FS_ProgressInfo pi;
231 p->emsg = GNUNET_strdup (emsg);
232 pi.status = GNUNET_FS_STATUS_PUBLISH_ERROR;
233 pi.value.publish.eta = GNUNET_TIME_UNIT_FOREVER_REL;
234 pi.value.publish.specifics.error.message =emsg;
235 p->client_info = GNUNET_FS_publish_make_status_ (&pi, sc, p, 0);
236 if ( (p->is_directory == GNUNET_NO) &&
237 (p->filename != NULL) &&
238 (p->data.file.do_index == GNUNET_YES) )
240 /* run unindex to clean up */
241 GNUNET_FS_unindex_start (sc->h,
250 * Datastore returns from reservation cancel request.
252 * @param cls the 'struct GNUNET_FS_PublishContext'
253 * @param success success code (not used)
254 * @param msg error message (typically NULL, not used)
257 finish_release_reserve (void *cls,
261 struct GNUNET_FS_PublishContext *pc = cls;
264 signal_publish_completion (pc->fi, pc);
265 pc->all_done = GNUNET_YES;
266 GNUNET_FS_publish_sync_ (pc);
271 * We've finished publishing the SBlock as part of a larger upload.
272 * Check the result and complete the larger upload.
274 * @param cls the "struct GNUNET_FS_PublishContext*" of the larger upload
275 * @param uri URI of the published SBlock
276 * @param emsg NULL on success, otherwise error message
279 publish_sblocks_cont (void *cls,
280 const struct GNUNET_FS_Uri *uri,
283 struct GNUNET_FS_PublishContext *pc = cls;
286 signal_publish_error (pc->fi,
289 GNUNET_FS_publish_sync_ (pc);
292 GNUNET_assert (pc->qre == NULL);
293 if ( (pc->dsh != NULL) &&
296 pc->qre = GNUNET_DATASTORE_release_reserve (pc->dsh,
300 GNUNET_TIME_UNIT_FOREVER_REL,
301 &finish_release_reserve,
306 finish_release_reserve (pc, GNUNET_OK, NULL);
312 * We are almost done publishing the structure,
313 * add SBlocks (if needed).
315 * @param sc overall upload data
318 publish_sblock (struct GNUNET_FS_PublishContext *sc)
320 if (NULL != sc->namespace)
321 GNUNET_FS_publish_sks (sc->h,
327 sc->fi->expirationTime,
331 &publish_sblocks_cont,
334 publish_sblocks_cont (sc, NULL, NULL);
339 * We've finished publishing a KBlock as part of a larger upload.
340 * Check the result and continue the larger upload.
342 * @param cls the "struct GNUNET_FS_PublishContext*"
343 * of the larger upload
344 * @param uri URI of the published blocks
345 * @param emsg NULL on success, otherwise error message
348 publish_kblocks_cont (void *cls,
349 const struct GNUNET_FS_Uri *uri,
352 struct GNUNET_FS_PublishContext *pc = cls;
353 struct GNUNET_FS_FileInformation *p = pc->fi_pos;
358 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
359 "Error uploading KSK blocks: %s\n",
362 signal_publish_error (p, pc, emsg);
363 GNUNET_FS_file_information_sync_ (p);
364 GNUNET_FS_publish_sync_ (pc);
366 = GNUNET_SCHEDULER_add_with_priority (GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
367 &GNUNET_FS_publish_main_,
372 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
373 "KSK blocks published, moving on to next file\n");
376 signal_publish_completion (p, pc);
377 /* move on to next file */
379 pc->fi_pos = p->next;
382 GNUNET_FS_publish_sync_ (pc);
384 = GNUNET_SCHEDULER_add_with_priority (GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
385 &GNUNET_FS_publish_main_,
391 * Function called by the tree encoder to obtain
392 * a block of plaintext data (for the lowest level
395 * @param cls our publishing context
396 * @param offset identifies which block to get
397 * @param max (maximum) number of bytes to get; returning
398 * fewer will also cause errors
399 * @param buf where to copy the plaintext buffer
400 * @param emsg location to store an error message (on error)
401 * @return number of bytes copied to buf, 0 on error
404 block_reader (void *cls,
410 struct GNUNET_FS_PublishContext *sc = cls;
411 struct GNUNET_FS_FileInformation *p;
418 pt_size = GNUNET_MIN(max,
419 p->data.dir.dir_size - offset);
420 dd = p->data.dir.dir_data;
427 pt_size = GNUNET_MIN(max,
428 p->data.file.file_size - offset);
430 return 0; /* calling reader with pt_size==0
431 might free buf, so don't! */
433 p->data.file.reader (p->data.file.reader_cls,
445 * The tree encoder has finished processing a
446 * file. Call it's finish method and deal with
449 * @param cls our publishing context
450 * @param tc scheduler's task context (not used)
453 encode_cont (void *cls,
454 const struct GNUNET_SCHEDULER_TaskContext *tc)
456 struct GNUNET_FS_PublishContext *sc = cls;
457 struct GNUNET_FS_FileInformation *p;
458 struct GNUNET_FS_ProgressInfo pi;
462 GNUNET_FS_tree_encoder_finish (p->te,
469 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
470 "Error during tree walk: %s\n",
473 GNUNET_asprintf (&p->emsg,
474 _("Publishing failed: %s"),
477 pi.status = GNUNET_FS_STATUS_PUBLISH_ERROR;
478 pi.value.publish.eta = GNUNET_TIME_UNIT_FOREVER_REL;
479 pi.value.publish.specifics.error.message = p->emsg;
480 p->client_info = GNUNET_FS_publish_make_status_ (&pi, sc, p, 0);
483 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
484 "Finished with tree encoder\n");
486 /* final progress event */
487 pi.status = GNUNET_FS_STATUS_PUBLISH_PROGRESS;
488 pi.value.publish.specifics.progress.data = NULL;
489 pi.value.publish.specifics.progress.offset = GNUNET_FS_uri_chk_get_file_size (p->chk_uri);
490 pi.value.publish.specifics.progress.data_len = 0;
491 pi.value.publish.specifics.progress.depth = 0;
492 p->client_info = GNUNET_FS_publish_make_status_ (&pi, sc, p,
493 GNUNET_FS_uri_chk_get_file_size (p->chk_uri));
495 /* continue with main */
497 = GNUNET_SCHEDULER_add_with_priority (GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
498 &GNUNET_FS_publish_main_,
504 * Function called asking for the current (encoded)
505 * block to be processed. After processing the
506 * client should either call "GNUNET_FS_tree_encode_next"
507 * or (on error) "GNUNET_FS_tree_encode_finish".
510 * @param query the query for the block (key for lookup in the datastore)
511 * @param offset offset of the block in the file
512 * @param type type of the block (IBLOCK or DBLOCK)
513 * @param block the (encrypted) block
514 * @param block_size size of block (in bytes)
517 block_proc (void *cls,
518 const GNUNET_HashCode *query,
520 enum GNUNET_BLOCK_Type type,
524 struct GNUNET_FS_PublishContext *sc = cls;
525 struct GNUNET_FS_FileInformation *p;
526 struct PutContCtx * dpc_cls;
527 struct OnDemandBlock odb;
533 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
534 "Waiting for datastore connection\n");
537 = GNUNET_SCHEDULER_add_with_priority (GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
538 &GNUNET_FS_publish_main_,
543 GNUNET_assert (GNUNET_NO == sc->in_network_wait);
544 sc->in_network_wait = GNUNET_YES;
545 dpc_cls = GNUNET_malloc(sizeof(struct PutContCtx));
546 dpc_cls->cont = &GNUNET_FS_publish_main_;
547 dpc_cls->cont_cls = sc;
550 if ( (! p->is_directory) &&
551 (GNUNET_YES == p->data.file.do_index) &&
552 (type == GNUNET_BLOCK_TYPE_FS_DBLOCK) )
555 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
556 "Indexing block `%s' for offset %llu with index size %u\n",
558 (unsigned long long) offset,
559 sizeof (struct OnDemandBlock));
561 odb.offset = GNUNET_htonll (offset);
562 odb.file_id = p->data.file.file_id;
563 GNUNET_DATASTORE_put (sc->dsh,
564 (p->is_directory) ? 0 : sc->rid,
566 sizeof (struct OnDemandBlock),
568 GNUNET_BLOCK_TYPE_FS_ONDEMAND,
573 GNUNET_CONSTANTS_SERVICE_TIMEOUT,
579 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
580 "Publishing block `%s' for offset %llu with size %u\n",
582 (unsigned long long) offset,
583 (unsigned int) block_size);
585 GNUNET_DATASTORE_put (sc->dsh,
586 (p->is_directory) ? 0 : sc->rid,
595 GNUNET_CONSTANTS_SERVICE_TIMEOUT,
602 * Function called with information about our
603 * progress in computing the tree encoding.
606 * @param offset where are we in the file
607 * @param pt_block plaintext of the currently processed block
608 * @param pt_size size of pt_block
609 * @param depth depth of the block in the tree
612 progress_proc (void *cls,
614 const void *pt_block,
618 struct GNUNET_FS_PublishContext *sc = cls;
619 struct GNUNET_FS_FileInformation *p;
620 struct GNUNET_FS_ProgressInfo pi;
623 pi.status = GNUNET_FS_STATUS_PUBLISH_PROGRESS;
624 pi.value.publish.specifics.progress.data = pt_block;
625 pi.value.publish.specifics.progress.offset = offset;
626 pi.value.publish.specifics.progress.data_len = pt_size;
627 pi.value.publish.specifics.progress.depth = depth;
628 p->client_info = GNUNET_FS_publish_make_status_ (&pi, sc, p, offset);
633 * We are uploading a file or directory; load (if necessary) the next
634 * block into memory, encrypt it and send it to the FS service. Then
635 * continue with the main task.
637 * @param sc overall upload data
640 publish_content (struct GNUNET_FS_PublishContext *sc)
642 struct GNUNET_FS_FileInformation *p;
644 struct GNUNET_FS_DirectoryBuilder *db;
645 struct GNUNET_FS_FileInformation *dirpos;
650 GNUNET_assert (p != NULL);
656 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
657 "Creating directory\n");
659 db = GNUNET_FS_directory_builder_create (p->meta);
660 dirpos = p->data.dir.entries;
661 while (NULL != dirpos)
663 if (dirpos->is_directory)
665 raw_data = dirpos->data.dir.dir_data;
666 dirpos->data.dir.dir_data = NULL;
671 if ( (dirpos->data.file.file_size < MAX_INLINE_SIZE) &&
672 (dirpos->data.file.file_size > 0) )
674 raw_data = GNUNET_malloc (dirpos->data.file.file_size);
676 if (dirpos->data.file.file_size !=
677 dirpos->data.file.reader (dirpos->data.file.reader_cls,
679 dirpos->data.file.file_size,
683 GNUNET_free_non_null (emsg);
684 GNUNET_free (raw_data);
689 GNUNET_FS_directory_builder_add (db,
693 GNUNET_free_non_null (raw_data);
694 dirpos = dirpos->next;
696 GNUNET_FS_directory_builder_finish (db,
697 &p->data.dir.dir_size,
698 &p->data.dir.dir_data);
699 GNUNET_FS_file_information_sync_ (p);
701 size = (p->is_directory)
702 ? p->data.dir.dir_size
703 : p->data.file.file_size;
705 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
706 "Creating tree encoder\n");
708 p->te = GNUNET_FS_tree_encoder_create (sc->h,
718 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
719 "Processing next block from tree\n");
721 GNUNET_FS_tree_encoder_next (p->te);
726 * Process the response (or lack thereof) from
727 * the "fs" service to our 'start index' request.
729 * @param cls closure (of type "struct GNUNET_FS_PublishContext*"_)
730 * @param msg the response we got
733 process_index_start_response (void *cls,
734 const struct GNUNET_MessageHeader *msg)
736 struct GNUNET_FS_PublishContext *sc = cls;
737 struct GNUNET_FS_FileInformation *p;
741 GNUNET_CLIENT_disconnect (sc->client, GNUNET_NO);
746 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
747 _("Can not index file `%s': %s. Will try to insert instead.\n"),
749 _("timeout on index-start request to `fs' service"));
750 p->data.file.do_index = GNUNET_NO;
751 GNUNET_FS_file_information_sync_ (p);
752 publish_content (sc);
755 if (ntohs (msg->type) != GNUNET_MESSAGE_TYPE_FS_INDEX_START_OK)
757 msize = ntohs (msg->size);
758 emsg = (const char *) &msg[1];
759 if ( (msize <= sizeof (struct GNUNET_MessageHeader)) ||
760 (emsg[msize - sizeof(struct GNUNET_MessageHeader) - 1] != '\0') )
761 emsg = gettext_noop ("unknown error");
762 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
763 _("Can not index file `%s': %s. Will try to insert instead.\n"),
766 p->data.file.do_index = GNUNET_NO;
767 GNUNET_FS_file_information_sync_ (p);
768 publish_content (sc);
771 p->data.file.index_start_confirmed = GNUNET_YES;
772 /* success! continue with indexing */
773 GNUNET_FS_file_information_sync_ (p);
774 publish_content (sc);
779 * Function called once the hash computation over an
780 * indexed file has completed.
782 * @param cls closure, our publishing context
783 * @param res resulting hash, NULL on error
786 hash_for_index_cb (void *cls,
787 const GNUNET_HashCode *
790 struct GNUNET_FS_PublishContext *sc = cls;
791 struct GNUNET_FS_FileInformation *p;
792 struct IndexStartMessage *ism;
794 struct GNUNET_CLIENT_Connection *client;
803 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
804 _("Can not index file `%s': %s. Will try to insert instead.\n"),
806 _("failed to compute hash"));
807 p->data.file.do_index = GNUNET_NO;
808 GNUNET_FS_file_information_sync_ (p);
809 publish_content (sc);
812 if (GNUNET_YES == p->data.file.index_start_confirmed)
814 publish_content (sc);
817 fn = GNUNET_STRINGS_filename_expand (p->filename);
818 GNUNET_assert (fn != NULL);
819 slen = strlen (fn) + 1;
820 if (slen >= GNUNET_SERVER_MAX_MESSAGE_SIZE - sizeof(struct IndexStartMessage))
822 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
823 _("Can not index file `%s': %s. Will try to insert instead.\n"),
825 _("filename too long"));
827 p->data.file.do_index = GNUNET_NO;
828 GNUNET_FS_file_information_sync_ (p);
829 publish_content (sc);
833 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
834 "Hash of indexed file `%s' is `%s'\n",
838 client = GNUNET_CLIENT_connect ("fs",
842 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
843 _("Can not index file `%s': %s. Will try to insert instead.\n"),
845 _("could not connect to `fs' service"));
846 p->data.file.do_index = GNUNET_NO;
847 publish_content (sc);
851 if (p->data.file.have_hash != GNUNET_YES)
853 p->data.file.file_id = *res;
854 p->data.file.have_hash = GNUNET_YES;
855 GNUNET_FS_file_information_sync_ (p);
857 ism = GNUNET_malloc (sizeof(struct IndexStartMessage) +
859 ism->header.size = htons(sizeof(struct IndexStartMessage) +
861 ism->header.type = htons(GNUNET_MESSAGE_TYPE_FS_INDEX_START);
863 GNUNET_DISK_file_get_identifiers (p->filename,
867 ism->device = GNUNET_htonll (dev);
868 ism->inode = GNUNET_htonll(ino);
873 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
874 _("Failed to get file identifiers for `%s'\n"),
884 GNUNET_break (GNUNET_YES ==
885 GNUNET_CLIENT_transmit_and_get_response (client,
887 GNUNET_TIME_UNIT_FOREVER_REL,
889 &process_index_start_response,
896 * Main function that performs the upload.
898 * @param cls "struct GNUNET_FS_PublishContext" identifies the upload
899 * @param tc task context
902 GNUNET_FS_publish_main_ (void *cls,
903 const struct GNUNET_SCHEDULER_TaskContext *tc)
905 struct GNUNET_FS_PublishContext *pc = cls;
906 struct GNUNET_FS_ProgressInfo pi;
907 struct GNUNET_FS_FileInformation *p;
908 struct GNUNET_FS_Uri *loc;
911 pc->upload_task = GNUNET_SCHEDULER_NO_TASK;
916 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
917 "Publishing complete, now publishing SKS and KSK blocks.\n");
919 /* upload of entire hierarchy complete,
920 publish namespace entries */
921 GNUNET_FS_publish_sync_ (pc);
925 /* find starting position */
926 while ( (p->is_directory) &&
927 (NULL != p->data.dir.entries) &&
929 (NULL == p->data.dir.entries->chk_uri) )
931 p = p->data.dir.entries;
933 GNUNET_FS_publish_sync_ (pc);
939 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
940 "Error uploading: %s\n",
943 /* error with current file, abort all
944 related files as well! */
945 while (NULL != p->dir)
947 fn = GNUNET_CONTAINER_meta_data_get_by_type (p->meta,
948 EXTRACTOR_METATYPE_FILENAME);
952 GNUNET_asprintf (&p->emsg,
953 _("Recursive upload failed at `%s': %s"),
960 GNUNET_asprintf (&p->emsg,
961 _("Recursive upload failed: %s"),
964 pi.status = GNUNET_FS_STATUS_PUBLISH_ERROR;
965 pi.value.publish.eta = GNUNET_TIME_UNIT_FOREVER_REL;
966 pi.value.publish.specifics.error.message = p->emsg;
967 p->client_info = GNUNET_FS_publish_make_status_ (&pi, pc, p, 0);
969 pc->all_done = GNUNET_YES;
970 GNUNET_FS_publish_sync_ (pc);
973 /* handle completion */
974 if (NULL != p->chk_uri)
977 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
978 "File upload complete, now publishing KSK blocks.\n");
980 if (0 == p->anonymity)
982 /* zero anonymity, box CHK URI in LOC URI */
983 loc = GNUNET_FS_uri_loc_create (p->chk_uri,
986 GNUNET_FS_uri_destroy (p->chk_uri);
989 GNUNET_FS_publish_sync_ (pc);
990 /* upload of "p" complete, publish KBlocks! */
991 if (p->keywords != NULL)
993 GNUNET_FS_publish_ksk (pc->h,
1001 &publish_kblocks_cont,
1006 publish_kblocks_cont (pc,
1012 if ( (!p->is_directory) &&
1013 (p->data.file.do_index) )
1015 if (NULL == p->filename)
1017 p->data.file.do_index = GNUNET_NO;
1018 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1019 _("Can not index file `%s': %s. Will try to insert instead.\n"),
1021 _("needs to be an actual file"));
1022 GNUNET_FS_file_information_sync_ (p);
1023 publish_content (pc);
1026 if (p->data.file.have_hash)
1028 hash_for_index_cb (pc,
1029 &p->data.file.file_id);
1033 p->start_time = GNUNET_TIME_absolute_get ();
1034 pc->fhc = GNUNET_CRYPTO_hash_file (GNUNET_SCHEDULER_PRIORITY_IDLE,
1042 publish_content (pc);
1047 * Signal the FS's progress function that we are starting
1050 * @param cls closure (of type "struct GNUNET_FS_PublishContext*")
1051 * @param fi the entry in the publish-structure
1052 * @param length length of the file or directory
1053 * @param meta metadata for the file or directory (can be modified)
1054 * @param uri pointer to the keywords that will be used for this entry (can be modified)
1055 * @param anonymity pointer to selected anonymity level (can be modified)
1056 * @param priority pointer to selected priority (can be modified)
1057 * @param do_index should we index?
1058 * @param expirationTime pointer to selected expiration time (can be modified)
1059 * @param client_info pointer to client context set upon creation (can be modified)
1060 * @return GNUNET_OK to continue (always)
1063 fip_signal_start(void *cls,
1064 struct GNUNET_FS_FileInformation *fi,
1066 struct GNUNET_CONTAINER_MetaData *meta,
1067 struct GNUNET_FS_Uri **uri,
1068 uint32_t *anonymity,
1071 struct GNUNET_TIME_Absolute *expirationTime,
1074 struct GNUNET_FS_PublishContext *sc = cls;
1075 struct GNUNET_FS_ProgressInfo pi;
1081 /* space for on-demand blocks */
1082 sc->reserve_space += ((length + DBLOCK_SIZE - 1) / DBLOCK_SIZE) * sizeof (struct OnDemandBlock);
1086 /* space for DBlocks */
1087 sc->reserve_space += length;
1089 /* entries for IBlocks and DBlocks, space for IBlocks */
1093 left = (left + DBLOCK_SIZE - 1) / DBLOCK_SIZE;
1094 sc->reserve_entries += left;
1097 left = left * sizeof (struct ContentHashKey);
1098 sc->reserve_space += left;
1100 sc->reserve_entries++;
1101 /* entries and space for keywords */
1104 kc = GNUNET_FS_uri_ksk_get_keyword_count (*uri);
1105 sc->reserve_entries += kc;
1106 sc->reserve_space += GNUNET_SERVER_MAX_MESSAGE_SIZE * kc;
1108 pi.status = GNUNET_FS_STATUS_PUBLISH_START;
1109 *client_info = GNUNET_FS_publish_make_status_ (&pi, sc, fi, 0);
1110 GNUNET_FS_file_information_sync_ (fi);
1116 * Signal the FS's progress function that we are suspending
1119 * @param cls closure (of type "struct GNUNET_FS_PublishContext*")
1120 * @param fi the entry in the publish-structure
1121 * @param length length of the file or directory
1122 * @param meta metadata for the file or directory (can be modified)
1123 * @param uri pointer to the keywords that will be used for this entry (can be modified)
1124 * @param anonymity pointer to selected anonymity level (can be modified)
1125 * @param priority pointer to selected priority (can be modified)
1126 * @param do_index should we index?
1127 * @param expirationTime pointer to selected expiration time (can be modified)
1128 * @param client_info pointer to client context set upon creation (can be modified)
1129 * @return GNUNET_OK to continue (always)
1132 fip_signal_suspend(void *cls,
1133 struct GNUNET_FS_FileInformation *fi,
1135 struct GNUNET_CONTAINER_MetaData *meta,
1136 struct GNUNET_FS_Uri **uri,
1137 uint32_t *anonymity,
1140 struct GNUNET_TIME_Absolute *expirationTime,
1143 struct GNUNET_FS_PublishContext*sc = cls;
1144 struct GNUNET_FS_ProgressInfo pi;
1147 GNUNET_free_non_null (fi->serialization);
1148 fi->serialization = NULL;
1149 off = (fi->chk_uri == NULL) ? 0 : length;
1150 pi.status = GNUNET_FS_STATUS_PUBLISH_SUSPEND;
1151 GNUNET_break (NULL == GNUNET_FS_publish_make_status_ (&pi, sc, fi, off));
1152 *client_info = NULL;
1153 if (NULL != sc->dsh)
1155 GNUNET_DATASTORE_disconnect (sc->dsh, GNUNET_NO);
1163 * Create SUSPEND event for the given publish operation
1164 * and then clean up our state (without stop signal).
1166 * @param cls the 'struct GNUNET_FS_PublishContext' to signal for
1169 GNUNET_FS_publish_signal_suspend_ (void *cls)
1171 struct GNUNET_FS_PublishContext *pc = cls;
1173 if (GNUNET_SCHEDULER_NO_TASK != pc->upload_task)
1175 GNUNET_SCHEDULER_cancel (pc->upload_task);
1176 pc->upload_task = GNUNET_SCHEDULER_NO_TASK;
1178 GNUNET_FS_file_information_inspect (pc->fi,
1179 &fip_signal_suspend,
1181 GNUNET_FS_end_top (pc->h, pc->top);
1182 publish_cleanup (pc, NULL);
1187 * We have gotten a reply for our space reservation request.
1188 * Either fail (insufficient space) or start publishing for good.
1190 * @param cls the 'struct GNUNET_FS_PublishContext*'
1191 * @param success positive reservation ID on success
1192 * @param msg error message on error, otherwise NULL
1195 finish_reserve (void *cls,
1199 struct GNUNET_FS_PublishContext *pc = cls;
1202 if ( (msg != NULL) ||
1205 GNUNET_asprintf (&pc->fi->emsg,
1206 _("Insufficient space for publishing: %s"),
1208 signal_publish_error (pc->fi,
1215 = GNUNET_SCHEDULER_add_with_priority (GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
1216 &GNUNET_FS_publish_main_,
1222 * Publish a file or directory.
1224 * @param h handle to the file sharing subsystem
1225 * @param fi information about the file or directory structure to publish
1226 * @param namespace namespace to publish the file in, NULL for no namespace
1227 * @param nid identifier to use for the publishd content in the namespace
1228 * (can be NULL, must be NULL if namespace is NULL)
1229 * @param nuid update-identifier that will be used for future updates
1230 * (can be NULL, must be NULL if namespace or nid is NULL)
1231 * @param options options for the publication
1232 * @return context that can be used to control the publish operation
1234 struct GNUNET_FS_PublishContext *
1235 GNUNET_FS_publish_start (struct GNUNET_FS_Handle *h,
1236 struct GNUNET_FS_FileInformation *fi,
1237 struct GNUNET_FS_Namespace *namespace,
1240 enum GNUNET_FS_PublishOptions options)
1242 struct GNUNET_FS_PublishContext *ret;
1243 struct GNUNET_DATASTORE_Handle *dsh;
1245 GNUNET_assert (NULL != h);
1246 if (0 == (options & GNUNET_FS_PUBLISH_OPTION_SIMULATE_ONLY))
1248 dsh = GNUNET_DATASTORE_connect (h->cfg);
1256 ret = GNUNET_malloc (sizeof (struct GNUNET_FS_PublishContext));
1260 ret->namespace = namespace;
1261 if (namespace != NULL)
1264 GNUNET_assert (NULL != nid);
1265 ret->nid = GNUNET_strdup (nid);
1267 ret->nuid = GNUNET_strdup (nuid);
1270 GNUNET_FS_file_information_inspect (ret->fi,
1273 ret->fi_pos = ret->fi;
1274 ret->top = GNUNET_FS_make_top (h, &GNUNET_FS_publish_signal_suspend_, ret);
1275 GNUNET_FS_publish_sync_ (ret);
1276 if (NULL != ret->dsh)
1278 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1279 _("Reserving space for %u entries and %llu bytes for publication\n"),
1280 (unsigned int) ret->reserve_entries,
1281 (unsigned long long) ret->reserve_space);
1282 ret->qre = GNUNET_DATASTORE_reserve (ret->dsh,
1284 ret->reserve_entries,
1287 GNUNET_TIME_UNIT_FOREVER_REL,
1294 = GNUNET_SCHEDULER_add_with_priority (GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
1295 &GNUNET_FS_publish_main_,
1303 * Signal the FS's progress function that we are stopping
1306 * @param cls closure (of type "struct GNUNET_FS_PublishContext*")
1307 * @param fi the entry in the publish-structure
1308 * @param length length of the file or directory
1309 * @param meta metadata for the file or directory (can be modified)
1310 * @param uri pointer to the keywords that will be used for this entry (can be modified)
1311 * @param anonymity pointer to selected anonymity level (can be modified)
1312 * @param priority pointer to selected priority (can be modified)
1313 * @param do_index should we index?
1314 * @param expirationTime pointer to selected expiration time (can be modified)
1315 * @param client_info pointer to client context set upon creation (can be modified)
1316 * @return GNUNET_OK to continue (always)
1319 fip_signal_stop(void *cls,
1320 struct GNUNET_FS_FileInformation *fi,
1322 struct GNUNET_CONTAINER_MetaData *meta,
1323 struct GNUNET_FS_Uri **uri,
1324 uint32_t *anonymity,
1327 struct GNUNET_TIME_Absolute *expirationTime,
1330 struct GNUNET_FS_PublishContext*sc = cls;
1331 struct GNUNET_FS_ProgressInfo pi;
1334 if (fi->serialization != NULL)
1336 GNUNET_FS_remove_sync_file_ (sc->h,
1337 GNUNET_FS_SYNC_PATH_FILE_INFO,
1339 GNUNET_free (fi->serialization);
1340 fi->serialization = NULL;
1342 off = (fi->chk_uri == NULL) ? 0 : length;
1343 pi.status = GNUNET_FS_STATUS_PUBLISH_STOPPED;
1344 GNUNET_break (NULL == GNUNET_FS_publish_make_status_ (&pi, sc, fi, off));
1345 *client_info = NULL;
1351 * Stop an upload. Will abort incomplete uploads (but
1352 * not remove blocks that have already been publishd) or
1353 * simply clean up the state for completed uploads.
1354 * Must NOT be called from within the event callback!
1356 * @param pc context for the upload to stop
1359 GNUNET_FS_publish_stop (struct GNUNET_FS_PublishContext *pc)
1361 GNUNET_FS_end_top (pc->h, pc->top);
1362 if (NULL != pc->qre)
1364 GNUNET_DATASTORE_cancel (pc->qre);
1367 if (NULL != pc->dsh)
1369 GNUNET_DATASTORE_disconnect (pc->dsh, GNUNET_NO);
1372 if (GNUNET_SCHEDULER_NO_TASK != pc->upload_task)
1374 GNUNET_SCHEDULER_cancel (pc->upload_task);
1375 pc->upload_task = GNUNET_SCHEDULER_NO_TASK;
1377 if (pc->serialization != NULL)
1379 GNUNET_FS_remove_sync_file_ (pc->h, GNUNET_FS_SYNC_PATH_MASTER_PUBLISH, pc->serialization);
1380 GNUNET_free (pc->serialization);
1381 pc->serialization = NULL;
1383 GNUNET_FS_file_information_inspect (pc->fi,
1386 if (GNUNET_YES == pc->in_network_wait)
1388 pc->in_network_wait = GNUNET_SYSERR;
1391 publish_cleanup (pc, NULL);
1396 * Context for the KSK publication.
1398 struct PublishKskContext
1404 struct GNUNET_FS_Uri *ksk_uri;
1407 * Global FS context.
1409 struct GNUNET_FS_Handle *h;
1412 * The master block that we are sending
1413 * (in plaintext), has "mdsize+slen" more
1414 * bytes than the struct would suggest.
1419 * Buffer of the same size as "kb" for
1420 * the encrypted version.
1425 * Handle to the datastore, NULL if we are just
1428 struct GNUNET_DATASTORE_Handle *dsh;
1431 * Function to call once we're done.
1433 GNUNET_FS_PublishContinuation cont;
1441 * When should the KBlocks expire?
1443 struct GNUNET_TIME_Absolute expirationTime;
1446 * Size of the serialized metadata.
1451 * Size of the (CHK) URI as a string.
1456 * Keyword that we are currently processing.
1461 * Anonymity level for the KBlocks.
1466 * Priority for the KBlocks.
1473 * Continuation of "GNUNET_FS_publish_ksk" that performs
1474 * the actual publishing operation (iterating over all
1477 * @param cls closure of type "struct PublishKskContext*"
1481 publish_ksk_cont (void *cls,
1482 const struct GNUNET_SCHEDULER_TaskContext *tc);
1486 * Function called by the datastore API with
1487 * the result from the PUT request.
1489 * @param cls closure of type "struct PublishKskContext*"
1490 * @param success GNUNET_OK on success
1491 * @param msg error message (or NULL)
1494 kb_put_cont (void *cls,
1498 struct PublishKskContext *pkc = cls;
1500 if (GNUNET_OK != success)
1502 if (NULL != pkc->dsh)
1504 GNUNET_DATASTORE_disconnect (pkc->dsh, GNUNET_NO);
1507 GNUNET_free (pkc->cpy);
1508 GNUNET_free (pkc->kb);
1509 pkc->cont (pkc->cont_cls,
1512 GNUNET_FS_uri_destroy (pkc->ksk_uri);
1516 GNUNET_SCHEDULER_add_continuation (&publish_ksk_cont,
1518 GNUNET_SCHEDULER_REASON_PREREQ_DONE);
1523 * Continuation of "GNUNET_FS_publish_ksk" that performs the actual
1524 * publishing operation (iterating over all of the keywords).
1526 * @param cls closure of type "struct PublishKskContext*"
1530 publish_ksk_cont (void *cls,
1531 const struct GNUNET_SCHEDULER_TaskContext *tc)
1533 struct PublishKskContext *pkc = cls;
1534 const char *keyword;
1535 GNUNET_HashCode key;
1536 GNUNET_HashCode query;
1537 struct GNUNET_CRYPTO_AesSessionKey skey;
1538 struct GNUNET_CRYPTO_AesInitializationVector iv;
1539 struct GNUNET_CRYPTO_RsaPrivateKey *pk;
1542 if ( (pkc->i == pkc->ksk_uri->data.ksk.keywordCount) ||
1543 (NULL == pkc->dsh) )
1545 if (NULL != pkc->dsh)
1547 GNUNET_DATASTORE_disconnect (pkc->dsh, GNUNET_NO);
1550 GNUNET_free (pkc->cpy);
1551 GNUNET_free (pkc->kb);
1552 pkc->cont (pkc->cont_cls,
1555 GNUNET_FS_uri_destroy (pkc->ksk_uri);
1559 keyword = pkc->ksk_uri->data.ksk.keywords[pkc->i++];
1560 /* first character of keyword indicates if it is
1561 mandatory or not -- ignore for hashing */
1562 GNUNET_CRYPTO_hash (&keyword[1], strlen (&keyword[1]), &key);
1563 GNUNET_CRYPTO_hash_to_aes_key (&key, &skey, &iv);
1564 GNUNET_CRYPTO_aes_encrypt (&pkc->kb[1],
1565 pkc->slen + pkc->mdsize,
1569 pk = GNUNET_CRYPTO_rsa_key_create_from_hash (&key);
1570 GNUNET_assert (NULL != pk);
1571 GNUNET_CRYPTO_rsa_key_get_public (pk, &pkc->cpy->keyspace);
1572 GNUNET_CRYPTO_hash (&pkc->cpy->keyspace,
1573 sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
1575 GNUNET_assert (GNUNET_OK ==
1576 GNUNET_CRYPTO_rsa_sign (pk,
1578 &pkc->cpy->signature));
1579 GNUNET_CRYPTO_rsa_key_free (pk);
1580 GNUNET_DATASTORE_put (pkc->dsh,
1584 sizeof (struct KBlock) +
1587 GNUNET_BLOCK_TYPE_FS_KBLOCK,
1590 pkc->expirationTime,
1592 GNUNET_CONSTANTS_SERVICE_TIMEOUT,
1599 * Publish a CHK under various keywords on GNUnet.
1601 * @param h handle to the file sharing subsystem
1602 * @param ksk_uri keywords to use
1603 * @param meta metadata to use
1604 * @param uri URI to refer to in the KBlock
1605 * @param expirationTime when the KBlock expires
1606 * @param anonymity anonymity level for the KBlock
1607 * @param priority priority for the KBlock
1608 * @param options publication options
1609 * @param cont continuation
1610 * @param cont_cls closure for cont
1613 GNUNET_FS_publish_ksk (struct GNUNET_FS_Handle *h,
1614 const struct GNUNET_FS_Uri *ksk_uri,
1615 const struct GNUNET_CONTAINER_MetaData *meta,
1616 const struct GNUNET_FS_Uri *uri,
1617 struct GNUNET_TIME_Absolute expirationTime,
1620 enum GNUNET_FS_PublishOptions options,
1621 GNUNET_FS_PublishContinuation cont,
1624 struct PublishKskContext *pkc;
1630 GNUNET_assert (NULL != uri);
1631 pkc = GNUNET_malloc (sizeof (struct PublishKskContext));
1633 pkc->expirationTime = expirationTime;
1634 pkc->anonymity = anonymity;
1635 pkc->priority = priority;
1637 pkc->cont_cls = cont_cls;
1638 if (0 == (options & GNUNET_FS_PUBLISH_OPTION_SIMULATE_ONLY))
1640 pkc->dsh = GNUNET_DATASTORE_connect (h->cfg);
1641 if (pkc->dsh == NULL)
1643 cont (cont_cls, NULL, _("Could not connect to datastore."));
1651 pkc->mdsize = GNUNET_CONTAINER_meta_data_get_serialized_size (meta);
1652 GNUNET_assert (pkc->mdsize >= 0);
1653 uris = GNUNET_FS_uri_to_string (uri);
1654 pkc->slen = strlen (uris) + 1;
1655 size = pkc->mdsize + sizeof (struct KBlock) + pkc->slen;
1656 if (size > MAX_KBLOCK_SIZE)
1658 size = MAX_KBLOCK_SIZE;
1659 pkc->mdsize = size - sizeof (struct KBlock) - pkc->slen;
1661 pkc->kb = GNUNET_malloc (size);
1662 kbe = (char *) &pkc->kb[1];
1663 memcpy (kbe, uris, pkc->slen);
1665 sptr = &kbe[pkc->slen];
1667 pkc->mdsize = GNUNET_CONTAINER_meta_data_serialize (meta,
1670 GNUNET_CONTAINER_META_DATA_SERIALIZE_PART);
1671 if (pkc->mdsize == -1)
1674 GNUNET_free (pkc->kb);
1675 if (pkc->dsh != NULL)
1677 GNUNET_DATASTORE_disconnect (pkc->dsh, GNUNET_NO);
1680 cont (cont_cls, NULL, _("Internal error."));
1684 size = sizeof (struct KBlock) + pkc->slen + pkc->mdsize;
1686 pkc->cpy = GNUNET_malloc (size);
1687 pkc->cpy->purpose.size = htonl (sizeof (struct GNUNET_CRYPTO_RsaSignaturePurpose) +
1688 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded) +
1691 pkc->cpy->purpose.purpose = htonl(GNUNET_SIGNATURE_PURPOSE_FS_KBLOCK);
1692 pkc->ksk_uri = GNUNET_FS_uri_dup (ksk_uri);
1693 GNUNET_SCHEDULER_add_continuation (&publish_ksk_cont,
1695 GNUNET_SCHEDULER_REASON_PREREQ_DONE);
1699 /* end of fs_publish.c */