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 * - indexing cleanup: unindex on failure (can wait)
30 * - persistence support (can wait)
31 * - datastore reservation support (optimization)
32 * - location URIs (publish with anonymity-level zero)
36 #include "gnunet_constants.h"
37 #include "gnunet_signatures.h"
38 #include "gnunet_util_lib.h"
39 #include "gnunet_fs_service.h"
43 #define DEBUG_PUBLISH GNUNET_NO
46 * Maximum allowed size for a KBlock.
48 #define MAX_KBLOCK_SIZE 60000
51 * Maximum allowed size for an SBlock.
53 #define MAX_SBLOCK_SIZE 60000
56 * Main function that performs the upload.
57 * @param cls "struct GNUNET_FS_PublishContext" identifies the upload
58 * @param tc task context
62 const struct GNUNET_SCHEDULER_TaskContext *tc);
66 * Context for "ds_put_cont".
71 * Current publishing context.
73 struct GNUNET_FS_PublishContext *sc;
76 * Specific file with the block.
78 struct GNUNET_FS_FileInformation *p;
81 * Function to run next, if any (can be NULL).
83 GNUNET_SCHEDULER_Task cont;
93 * Fill in all of the generic fields for
96 * @param pi structure to fill in
97 * @param sc overall publishing context
98 * @param p file information for the file being published
99 * @param offset where in the file are we so far
102 make_publish_status (struct GNUNET_FS_ProgressInfo *pi,
103 struct GNUNET_FS_PublishContext *sc,
104 const struct GNUNET_FS_FileInformation *p,
107 pi->value.publish.sc = sc;
108 pi->value.publish.fi = p;
109 pi->value.publish.cctx
111 pi->value.publish.pctx
112 = (NULL == p->dir) ? NULL : p->dir->client_info;
113 pi->value.publish.filename
114 = (p->is_directory) ? p->data.dir.dirname : p->data.file.filename;
115 pi->value.publish.size
116 = (p->is_directory) ? p->data.dir.dir_size : p->data.file.file_size;
117 pi->value.publish.eta
118 = GNUNET_TIME_calculate_eta (p->start_time,
120 pi->value.publish.size);
121 pi->value.publish.completed = offset;
122 pi->value.publish.duration = GNUNET_TIME_absolute_get_duration (p->start_time);
123 pi->value.publish.anonymity = p->anonymity;
128 * Cleanup the publish context, we're done
131 * @param sc struct to clean up after
134 publish_cleanup (struct GNUNET_FS_PublishContext *sc)
136 GNUNET_FS_file_information_destroy (sc->fi, NULL, NULL);
137 if (sc->namespace != 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,
185 GNUNET_FS_file_information_sync (pcc->p);
186 if (NULL != pcc->cont)
188 = GNUNET_SCHEDULER_add_with_priority (pcc->sc->h->sched,
189 GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
197 * Generate the callback that signals clients
198 * that a file (or directory) has been completely
201 * @param p the completed upload
202 * @param sc context of the publication
205 signal_publish_completion (struct GNUNET_FS_FileInformation *p,
206 struct GNUNET_FS_PublishContext *sc)
208 struct GNUNET_FS_ProgressInfo pi;
210 pi.status = GNUNET_FS_STATUS_PUBLISH_COMPLETED;
211 make_publish_status (&pi, sc, p,
212 GNUNET_ntohll (p->chk_uri->data.chk.file_length));
213 pi.value.publish.eta = GNUNET_TIME_UNIT_ZERO;
214 pi.value.publish.specifics.completed.chk_uri = p->chk_uri;
216 = sc->h->upcb (sc->h->upcb_cls,
222 * Generate the callback that signals clients
223 * that a file (or directory) has encountered
224 * a problem during publication.
226 * @param p the upload that had trouble
227 * @param sc context of the publication
228 * @param emsg error message
231 signal_publish_error (struct GNUNET_FS_FileInformation *p,
232 struct GNUNET_FS_PublishContext *sc,
235 struct GNUNET_FS_ProgressInfo pi;
237 p->emsg = GNUNET_strdup (emsg);
238 pi.status = GNUNET_FS_STATUS_PUBLISH_ERROR;
239 make_publish_status (&pi, sc, p, 0);
240 pi.value.publish.eta = GNUNET_TIME_UNIT_FOREVER_REL;
241 pi.value.publish.specifics.error.message =emsg;
243 = sc->h->upcb (sc->h->upcb_cls,
249 * We've finished publishing the SBlock as part of a larger upload.
250 * Check the result and complete the larger upload.
252 * @param cls the "struct GNUNET_FS_PublishContext*" of the larger upload
253 * @param uri URI of the published SBlock
254 * @param emsg NULL on success, otherwise error message
257 publish_sblocks_cont (void *cls,
258 const struct GNUNET_FS_Uri *uri,
261 struct GNUNET_FS_PublishContext *sc = cls;
264 signal_publish_error (sc->fi,
269 // FIXME: release the datastore reserve here!
270 signal_publish_completion (sc->fi, sc);
271 sc->all_done = GNUNET_YES;
276 * We are almost done publishing the structure,
277 * add SBlocks (if needed).
279 * @param sc overall upload data
282 publish_sblock (struct GNUNET_FS_PublishContext *sc)
284 if (NULL != sc->namespace)
285 GNUNET_FS_publish_sks (sc->h,
291 sc->fi->expirationTime,
295 &publish_sblocks_cont,
298 publish_sblocks_cont (sc, NULL, NULL);
303 * We've finished publishing a KBlock as part of a larger upload.
304 * Check the result and continue the larger upload.
306 * @param cls the "struct GNUNET_FS_PublishContext*"
307 * of the larger upload
308 * @param uri URI of the published blocks
309 * @param emsg NULL on success, otherwise error message
312 publish_kblocks_cont (void *cls,
313 const struct GNUNET_FS_Uri *uri,
316 struct GNUNET_FS_PublishContext *sc = cls;
317 struct GNUNET_FS_FileInformation *p = sc->fi_pos;
321 signal_publish_error (p, sc, emsg);
323 = GNUNET_SCHEDULER_add_with_priority (sc->h->sched,
324 GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
329 GNUNET_FS_file_information_sync (p);
331 signal_publish_completion (p, sc);
332 /* move on to next file */
334 sc->fi_pos = p->next;
338 = GNUNET_SCHEDULER_add_with_priority (sc->h->sched,
339 GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
346 * Function called by the tree encoder to obtain
347 * a block of plaintext data (for the lowest level
350 * @param cls our publishing context
351 * @param offset identifies which block to get
352 * @param max (maximum) number of bytes to get; returning
353 * fewer will also cause errors
354 * @param buf where to copy the plaintext buffer
355 * @param emsg location to store an error message (on error)
356 * @return number of bytes copied to buf, 0 on error
359 block_reader (void *cls,
365 struct GNUNET_FS_PublishContext *sc = cls;
366 struct GNUNET_FS_FileInformation *p;
373 pt_size = GNUNET_MIN(max,
374 p->data.dir.dir_size - offset);
375 dd = p->data.dir.dir_data;
382 pt_size = GNUNET_MIN(max,
383 p->data.file.file_size - offset);
385 return 0; /* calling reader with pt_size==0
386 might free buf, so don't! */
388 p->data.file.reader (p->data.file.reader_cls,
400 * The tree encoder has finished processing a
401 * file. Call it's finish method and deal with
404 * @param cls our publishing context
405 * @param tc scheduler's task context (not used)
408 encode_cont (void *cls,
409 const struct GNUNET_SCHEDULER_TaskContext *tc)
411 struct GNUNET_FS_PublishContext *sc = cls;
412 struct GNUNET_FS_FileInformation *p;
413 struct GNUNET_FS_ProgressInfo pi;
417 GNUNET_FS_tree_encoder_finish (p->te,
423 GNUNET_asprintf (&p->emsg,
424 _("Upload failed: %s"),
427 GNUNET_FS_file_information_sync (p);
428 pi.status = GNUNET_FS_STATUS_PUBLISH_ERROR;
429 make_publish_status (&pi, sc, p, 0);
430 pi.value.publish.eta = GNUNET_TIME_UNIT_FOREVER_REL;
431 pi.value.publish.specifics.error.message = p->emsg;
433 = sc->h->upcb (sc->h->upcb_cls,
436 /* continue with main */
438 = GNUNET_SCHEDULER_add_with_priority (sc->h->sched,
439 GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
446 * Function called asking for the current (encoded)
447 * block to be processed. After processing the
448 * client should either call "GNUNET_FS_tree_encode_next"
449 * or (on error) "GNUNET_FS_tree_encode_finish".
452 * @param query the query for the block (key for lookup in the datastore)
453 * @param offset offset of the block in the file
454 * @param type type of the block (IBLOCK or DBLOCK)
455 * @param block the (encrypted) block
456 * @param block_size size of block (in bytes)
459 block_proc (void *cls,
460 const GNUNET_HashCode *query,
466 struct GNUNET_FS_PublishContext *sc = cls;
467 struct GNUNET_FS_FileInformation *p;
468 struct PutContCtx * dpc_cls;
469 struct OnDemandBlock odb;
475 = GNUNET_SCHEDULER_add_with_priority (sc->h->sched,
476 GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
482 GNUNET_assert (GNUNET_NO == sc->in_network_wait);
483 sc->in_network_wait = GNUNET_YES;
484 dpc_cls = GNUNET_malloc(sizeof(struct PutContCtx));
485 dpc_cls->cont = &do_upload;
486 dpc_cls->cont_cls = sc;
489 if ( (! p->is_directory) &&
490 (GNUNET_YES == p->data.file.do_index) &&
491 (type == GNUNET_DATASTORE_BLOCKTYPE_DBLOCK) )
494 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
495 "Indexing block `%s' for offset %llu with index size %u\n",
497 (unsigned long long) offset,
498 sizeof (struct OnDemandBlock));
500 odb.offset = GNUNET_htonll (offset);
501 odb.file_id = p->data.file.file_id;
502 GNUNET_DATASTORE_put (sc->dsh,
505 sizeof(struct OnDemandBlock),
507 GNUNET_DATASTORE_BLOCKTYPE_ONDEMAND,
511 GNUNET_CONSTANTS_SERVICE_TIMEOUT,
517 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
518 "Publishing block `%s' for offset %llu with size %u\n",
520 (unsigned long long) offset,
521 (unsigned int) block_size);
523 GNUNET_DATASTORE_put (sc->dsh,
532 GNUNET_CONSTANTS_SERVICE_TIMEOUT,
539 * Function called with information about our
540 * progress in computing the tree encoding.
543 * @param offset where are we in the file
544 * @param pt_block plaintext of the currently processed block
545 * @param pt_size size of pt_block
546 * @param depth depth of the block in the tree
549 progress_proc (void *cls,
551 const void *pt_block,
555 struct GNUNET_FS_PublishContext *sc = cls;
556 struct GNUNET_FS_FileInformation *p;
557 struct GNUNET_FS_ProgressInfo pi;
560 pi.status = GNUNET_FS_STATUS_PUBLISH_PROGRESS;
561 make_publish_status (&pi, sc, p, offset);
562 pi.value.publish.specifics.progress.data = pt_block;
563 pi.value.publish.specifics.progress.offset = offset;
564 pi.value.publish.specifics.progress.data_len = pt_size;
565 pi.value.publish.specifics.progress.depth = depth;
567 = sc->h->upcb (sc->h->upcb_cls,
573 * We are uploading a file or directory; load (if necessary) the next
574 * block into memory, encrypt it and send it to the FS service. Then
575 * continue with the main task.
577 * @param sc overall upload data
580 publish_content (struct GNUNET_FS_PublishContext *sc)
582 struct GNUNET_FS_FileInformation *p;
584 struct GNUNET_FS_DirectoryBuilder *db;
585 struct GNUNET_FS_FileInformation *dirpos;
594 db = GNUNET_FS_directory_builder_create (p->meta);
595 dirpos = p->data.dir.entries;
596 while (NULL != dirpos)
598 if (dirpos->is_directory)
600 raw_data = dirpos->data.dir.dir_data;
601 dirpos->data.dir.dir_data = NULL;
606 if ( (dirpos->data.file.file_size < MAX_INLINE_SIZE) &&
607 (dirpos->data.file.file_size > 0) )
609 raw_data = GNUNET_malloc (dirpos->data.file.file_size);
611 if (dirpos->data.file.file_size !=
612 dirpos->data.file.reader (dirpos->data.file.reader_cls,
614 dirpos->data.file.file_size,
618 GNUNET_free_non_null (emsg);
619 GNUNET_free (raw_data);
624 GNUNET_FS_directory_builder_add (db,
628 GNUNET_free_non_null (raw_data);
629 dirpos = dirpos->next;
631 GNUNET_FS_directory_builder_finish (db,
632 &p->data.dir.dir_size,
633 &p->data.dir.dir_data);
635 size = (p->is_directory)
636 ? p->data.dir.dir_size
637 : p->data.file.file_size;
638 p->te = GNUNET_FS_tree_encoder_create (sc->h,
647 GNUNET_FS_tree_encoder_next (p->te);
652 * Process the response (or lack thereof) from
653 * the "fs" service to our 'start index' request.
655 * @param cls closure (of type "struct GNUNET_FS_PublishContext*"_)
656 * @param msg the response we got
659 process_index_start_response (void *cls,
660 const struct GNUNET_MessageHeader *msg)
662 struct GNUNET_FS_PublishContext *sc = cls;
663 struct GNUNET_FS_FileInformation *p;
667 GNUNET_CLIENT_disconnect (sc->client, GNUNET_NO);
672 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
673 _("Can not index file `%s': %s. Will try to insert instead.\n"),
674 p->data.file.filename,
675 _("timeout on index-start request to `fs' service"));
676 p->data.file.do_index = GNUNET_NO;
677 publish_content (sc);
680 if (ntohs (msg->type) != GNUNET_MESSAGE_TYPE_FS_INDEX_START_OK)
682 msize = ntohs (msg->size);
683 emsg = (const char *) &msg[1];
684 if ( (msize <= sizeof (struct GNUNET_MessageHeader)) ||
685 (emsg[msize - sizeof(struct GNUNET_MessageHeader) - 1] != '\0') )
686 emsg = gettext_noop ("unknown error");
687 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
688 _("Can not index file `%s': %s. Will try to insert instead.\n"),
689 p->data.file.filename,
691 p->data.file.do_index = GNUNET_NO;
692 publish_content (sc);
695 p->data.file.index_start_confirmed = GNUNET_YES;
696 /* success! continue with indexing */
697 publish_content (sc);
702 * Function called once the hash computation over an
703 * indexed file has completed.
705 * @param cls closure, our publishing context
706 * @param res resulting hash, NULL on error
709 hash_for_index_cb (void *cls,
710 const GNUNET_HashCode *
713 struct GNUNET_FS_PublishContext *sc = cls;
714 struct GNUNET_FS_FileInformation *p;
715 struct IndexStartMessage *ism;
717 struct GNUNET_CLIENT_Connection *client;
724 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
725 _("Can not index file `%s': %s. Will try to insert instead.\n"),
726 p->data.file.filename,
727 _("failed to compute hash"));
728 p->data.file.do_index = GNUNET_NO;
729 publish_content (sc);
732 if (GNUNET_YES == p->data.file.index_start_confirmed)
734 publish_content (sc);
737 slen = strlen (p->data.file.filename) + 1;
738 if (slen > GNUNET_SERVER_MAX_MESSAGE_SIZE - sizeof(struct IndexStartMessage))
740 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
741 _("Can not index file `%s': %s. Will try to insert instead.\n"),
742 p->data.file.filename,
743 _("filename too long"));
744 p->data.file.do_index = GNUNET_NO;
745 publish_content (sc);
749 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
750 "Hash of indexed file `%s' is `%s'\n",
751 p->data.file.filename,
754 client = GNUNET_CLIENT_connect (sc->h->sched,
759 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
760 _("Can not index file `%s': %s. Will try to insert instead.\n"),
761 p->data.file.filename,
762 _("could not connect to `fs' service"));
763 p->data.file.do_index = GNUNET_NO;
764 publish_content (sc);
767 p->data.file.file_id = *res;
768 p->data.file.have_hash = GNUNET_YES;
769 ism = GNUNET_malloc (sizeof(struct IndexStartMessage) +
771 ism->header.size = htons(sizeof(struct IndexStartMessage) +
773 ism->header.type = htons(GNUNET_MESSAGE_TYPE_FS_INDEX_START);
775 GNUNET_DISK_file_get_identifiers (p->data.file.filename,
779 ism->device = htonl (dev);
780 ism->inode = GNUNET_htonll(ino);
784 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
785 _("Failed to get file identifiers for `%s'\n"),
786 p->data.file.filename);
790 p->data.file.filename,
793 GNUNET_break (GNUNET_YES ==
794 GNUNET_CLIENT_transmit_and_get_response (client,
796 GNUNET_TIME_UNIT_FOREVER_REL,
798 &process_index_start_response,
805 * Main function that performs the upload.
806 * @param cls "struct GNUNET_FS_PublishContext" identifies the upload
807 * @param tc task context
810 do_upload (void *cls,
811 const struct GNUNET_SCHEDULER_TaskContext *tc)
813 struct GNUNET_FS_PublishContext *sc = cls;
814 struct GNUNET_FS_ProgressInfo pi;
815 struct GNUNET_FS_FileInformation *p;
818 sc->upload_task = GNUNET_SCHEDULER_NO_TASK;
822 /* upload of entire hierarchy complete,
823 publish namespace entries */
827 /* find starting position */
828 while ( (p->is_directory) &&
829 (NULL != p->data.dir.entries) &&
831 (NULL == p->data.dir.entries->chk_uri) )
833 p = p->data.dir.entries;
839 /* error with current file, abort all
840 related files as well! */
841 while (NULL != p->dir)
843 fn = GNUNET_CONTAINER_meta_data_get_by_type (p->meta,
844 EXTRACTOR_METATYPE_FILENAME);
846 GNUNET_asprintf (&p->emsg,
847 _("Recursive upload failed at `%s'"),
850 GNUNET_FS_file_information_sync (p);
851 pi.status = GNUNET_FS_STATUS_PUBLISH_ERROR;
852 make_publish_status (&pi, sc, p, 0);
853 pi.value.publish.eta = GNUNET_TIME_UNIT_FOREVER_REL;
854 pi.value.publish.specifics.error.message = p->emsg;
856 = sc->h->upcb (sc->h->upcb_cls,
859 sc->all_done = GNUNET_YES;
862 /* handle completion */
863 if (NULL != p->chk_uri)
865 /* upload of "p" complete, publish KBlocks! */
866 if (p->keywords != NULL)
868 GNUNET_FS_publish_ksk (sc->h,
876 &publish_kblocks_cont,
881 publish_kblocks_cont (sc,
887 if ( (!p->is_directory) &&
888 (p->data.file.do_index) )
890 if (NULL == p->data.file.filename)
892 p->data.file.do_index = GNUNET_NO;
893 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
894 _("Can not index file `%s': %s. Will try to insert instead.\n"),
896 _("needs to be an actual file"));
897 publish_content (sc);
900 if (p->data.file.have_hash)
901 hash_for_index_cb (sc,
902 &p->data.file.file_id);
905 p->start_time = GNUNET_TIME_absolute_get ();
906 GNUNET_CRYPTO_hash_file (sc->h->sched,
907 GNUNET_SCHEDULER_PRIORITY_IDLE,
908 p->data.file.filename,
915 publish_content (sc);
920 * Signal the FS's progress function that we are starting
923 * @param cls closure (of type "struct GNUNET_FS_PublishContext*")
924 * @param fi the entry in the publish-structure
925 * @param length length of the file or directory
926 * @param meta metadata for the file or directory (can be modified)
927 * @param uri pointer to the keywords that will be used for this entry (can be modified)
928 * @param anonymity pointer to selected anonymity level (can be modified)
929 * @param priority pointer to selected priority (can be modified)
930 * @param expirationTime pointer to selected expiration time (can be modified)
931 * @param client_info pointer to client context set upon creation (can be modified)
932 * @return GNUNET_OK to continue (always)
935 fip_signal_start(void *cls,
936 struct GNUNET_FS_FileInformation *fi,
938 struct GNUNET_CONTAINER_MetaData *meta,
939 struct GNUNET_FS_Uri **uri,
942 struct GNUNET_TIME_Absolute *expirationTime,
945 struct GNUNET_FS_PublishContext *sc = cls;
946 struct GNUNET_FS_ProgressInfo pi;
948 pi.status = GNUNET_FS_STATUS_PUBLISH_START;
949 make_publish_status (&pi, sc, fi, 0);
950 *client_info = sc->h->upcb (sc->h->upcb_cls,
957 * Publish a file or directory.
959 * @param h handle to the file sharing subsystem
960 * @param fi information about the file or directory structure to publish
961 * @param namespace namespace to publish the file in, NULL for no namespace
962 * @param nid identifier to use for the publishd content in the namespace
963 * (can be NULL, must be NULL if namespace is NULL)
964 * @param nuid update-identifier that will be used for future updates
965 * (can be NULL, must be NULL if namespace or nid is NULL)
966 * @param options options for the publication
967 * @return context that can be used to control the publish operation
969 struct GNUNET_FS_PublishContext *
970 GNUNET_FS_publish_start (struct GNUNET_FS_Handle *h,
971 struct GNUNET_FS_FileInformation *fi,
972 struct GNUNET_FS_Namespace *namespace,
975 enum GNUNET_FS_PublishOptions options)
977 struct GNUNET_FS_PublishContext *ret;
978 struct GNUNET_DATASTORE_Handle *dsh;
980 if (0 == (options & GNUNET_FS_PUBLISH_OPTION_SIMULATE_ONLY))
982 dsh = GNUNET_DATASTORE_connect (h->cfg,
991 ret = GNUNET_malloc (sizeof (struct GNUNET_FS_PublishContext));
995 ret->namespace = namespace;
996 if (namespace != NULL)
999 GNUNET_assert (NULL != nid);
1000 ret->nid = GNUNET_strdup (nid);
1002 ret->nuid = GNUNET_strdup (nuid);
1004 // FIXME: make upload persistent!
1007 GNUNET_FS_file_information_inspect (ret->fi,
1010 ret->fi_pos = ret->fi;
1012 // FIXME: calculate space needed for "fi"
1013 // and reserve as first task (then trigger
1014 // "do_upload" from that continuation)!
1016 = GNUNET_SCHEDULER_add_with_priority (h->sched,
1017 GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
1025 * Signal the FS's progress function that we are stopping
1028 * @param cls closure (of type "struct GNUNET_FS_PublishContext*")
1029 * @param fi the entry in the publish-structure
1030 * @param length length of the file or directory
1031 * @param meta metadata for the file or directory (can be modified)
1032 * @param uri pointer to the keywords that will be used for this entry (can be modified)
1033 * @param anonymity pointer to selected anonymity level (can be modified)
1034 * @param priority pointer to selected priority (can be modified)
1035 * @param expirationTime pointer to selected expiration time (can be modified)
1036 * @param client_info pointer to client context set upon creation (can be modified)
1037 * @return GNUNET_OK to continue (always)
1040 fip_signal_stop(void *cls,
1041 struct GNUNET_FS_FileInformation *fi,
1043 struct GNUNET_CONTAINER_MetaData *meta,
1044 struct GNUNET_FS_Uri **uri,
1045 uint32_t *anonymity,
1047 struct GNUNET_TIME_Absolute *expirationTime,
1050 struct GNUNET_FS_PublishContext*sc = cls;
1051 struct GNUNET_FS_ProgressInfo pi;
1054 off = (fi->chk_uri == NULL) ? 0 : length;
1055 pi.status = GNUNET_FS_STATUS_PUBLISH_STOPPED;
1056 make_publish_status (&pi, sc, fi, off);
1057 GNUNET_break (NULL ==
1058 sc->h->upcb (sc->h->upcb_cls,
1060 *client_info = NULL;
1066 * Stop an upload. Will abort incomplete uploads (but
1067 * not remove blocks that have already been publishd) or
1068 * simply clean up the state for completed uploads.
1069 * Must NOT be called from within the event callback!
1071 * @param sc context for the upload to stop
1074 GNUNET_FS_publish_stop (struct GNUNET_FS_PublishContext *sc)
1076 if (GNUNET_SCHEDULER_NO_TASK != sc->upload_task)
1077 GNUNET_SCHEDULER_cancel (sc->h->sched, sc->upload_task);
1079 GNUNET_assert (sc->all_done == GNUNET_YES);
1080 // FIXME: remove from persistence DB (?) --- think more about
1081 // shutdown / persistent-resume APIs!!!
1082 GNUNET_FS_file_information_inspect (sc->fi,
1085 if (GNUNET_YES == sc->in_network_wait)
1087 sc->in_network_wait = GNUNET_SYSERR;
1090 publish_cleanup (sc);
1095 * Context for the KSK publication.
1097 struct PublishKskContext
1103 struct GNUNET_FS_Uri *ksk_uri;
1106 * Global FS context.
1108 struct GNUNET_FS_Handle *h;
1111 * The master block that we are sending
1112 * (in plaintext), has "mdsize+slen" more
1113 * bytes than the struct would suggest.
1118 * Buffer of the same size as "kb" for
1119 * the encrypted version.
1124 * Handle to the datastore, NULL if we are just
1127 struct GNUNET_DATASTORE_Handle *dsh;
1130 * Function to call once we're done.
1132 GNUNET_FS_PublishContinuation cont;
1140 * When should the KBlocks expire?
1142 struct GNUNET_TIME_Absolute expirationTime;
1145 * Size of the serialized metadata.
1150 * Size of the (CHK) URI as a string.
1155 * Keyword that we are currently processing.
1160 * Anonymity level for the KBlocks.
1165 * Priority for the KBlocks.
1172 * Continuation of "GNUNET_FS_publish_ksk" that performs
1173 * the actual publishing operation (iterating over all
1176 * @param cls closure of type "struct PublishKskContext*"
1180 publish_ksk_cont (void *cls,
1181 const struct GNUNET_SCHEDULER_TaskContext *tc);
1185 * Function called by the datastore API with
1186 * the result from the PUT request.
1188 * @param cls closure of type "struct PublishKskContext*"
1189 * @param success GNUNET_OK on success
1190 * @param msg error message (or NULL)
1193 kb_put_cont (void *cls,
1197 struct PublishKskContext *pkc = cls;
1199 if (GNUNET_OK != success)
1201 GNUNET_DATASTORE_disconnect (pkc->dsh, GNUNET_NO);
1202 GNUNET_free (pkc->cpy);
1203 GNUNET_free (pkc->kb);
1204 pkc->cont (pkc->cont_cls,
1207 GNUNET_FS_uri_destroy (pkc->ksk_uri);
1211 GNUNET_SCHEDULER_add_continuation (pkc->h->sched,
1214 GNUNET_SCHEDULER_REASON_PREREQ_DONE);
1219 * Continuation of "GNUNET_FS_publish_ksk" that performs the actual
1220 * publishing operation (iterating over all of the keywords).
1222 * @param cls closure of type "struct PublishKskContext*"
1226 publish_ksk_cont (void *cls,
1227 const struct GNUNET_SCHEDULER_TaskContext *tc)
1229 struct PublishKskContext *pkc = cls;
1230 const char *keyword;
1231 GNUNET_HashCode key;
1232 GNUNET_HashCode query;
1233 struct GNUNET_CRYPTO_AesSessionKey skey;
1234 struct GNUNET_CRYPTO_AesInitializationVector iv;
1235 struct GNUNET_CRYPTO_RsaPrivateKey *pk;
1238 if ( (pkc->i == pkc->ksk_uri->data.ksk.keywordCount) ||
1239 (NULL == pkc->dsh) )
1241 if (NULL != pkc->dsh)
1242 GNUNET_DATASTORE_disconnect (pkc->dsh, GNUNET_NO);
1243 GNUNET_free (pkc->cpy);
1244 GNUNET_free (pkc->kb);
1245 pkc->cont (pkc->cont_cls,
1248 GNUNET_FS_uri_destroy (pkc->ksk_uri);
1252 keyword = pkc->ksk_uri->data.ksk.keywords[pkc->i++];
1253 /* first character of keyword indicates if it is
1254 mandatory or not -- ignore for hashing */
1255 GNUNET_CRYPTO_hash (&keyword[1], strlen (&keyword[1]), &key);
1256 GNUNET_CRYPTO_hash_to_aes_key (&key, &skey, &iv);
1257 GNUNET_CRYPTO_aes_encrypt (&pkc->kb[1],
1258 pkc->slen + pkc->mdsize,
1262 pk = GNUNET_CRYPTO_rsa_key_create_from_hash (&key);
1263 GNUNET_CRYPTO_rsa_key_get_public (pk, &pkc->cpy->keyspace);
1264 GNUNET_CRYPTO_hash (&pkc->cpy->keyspace,
1265 sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
1267 GNUNET_assert (GNUNET_OK ==
1268 GNUNET_CRYPTO_rsa_sign (pk,
1270 &pkc->cpy->signature));
1271 GNUNET_CRYPTO_rsa_key_free (pk);
1272 GNUNET_DATASTORE_put (pkc->dsh,
1276 sizeof (struct KBlock) +
1279 GNUNET_DATASTORE_BLOCKTYPE_KBLOCK,
1282 pkc->expirationTime,
1283 GNUNET_CONSTANTS_SERVICE_TIMEOUT,
1290 * Publish a CHK under various keywords on GNUnet.
1292 * @param h handle to the file sharing subsystem
1293 * @param ksk_uri keywords to use
1294 * @param meta metadata to use
1295 * @param uri URI to refer to in the KBlock
1296 * @param expirationTime when the KBlock expires
1297 * @param anonymity anonymity level for the KBlock
1298 * @param priority priority for the KBlock
1299 * @param options publication options
1300 * @param cont continuation
1301 * @param cont_cls closure for cont
1304 GNUNET_FS_publish_ksk (struct GNUNET_FS_Handle *h,
1305 struct GNUNET_FS_Uri *ksk_uri,
1306 struct GNUNET_CONTAINER_MetaData *meta,
1307 struct GNUNET_FS_Uri *uri,
1308 struct GNUNET_TIME_Absolute expirationTime,
1311 enum GNUNET_FS_PublishOptions options,
1312 GNUNET_FS_PublishContinuation cont,
1315 struct PublishKskContext *pkc;
1321 pkc = GNUNET_malloc (sizeof (struct PublishKskContext));
1323 pkc->expirationTime = expirationTime;
1324 pkc->anonymity = anonymity;
1325 pkc->priority = priority;
1327 pkc->cont_cls = cont_cls;
1328 if (0 == (options & GNUNET_FS_PUBLISH_OPTION_SIMULATE_ONLY))
1330 pkc->dsh = GNUNET_DATASTORE_connect (h->cfg,
1332 if (pkc->dsh == NULL)
1334 cont (cont_cls, NULL, _("Could not connect to datastore."));
1342 pkc->mdsize = GNUNET_CONTAINER_meta_data_get_serialized_size (meta);
1343 GNUNET_assert (pkc->mdsize >= 0);
1344 uris = GNUNET_FS_uri_to_string (uri);
1345 pkc->slen = strlen (uris) + 1;
1346 size = pkc->mdsize + sizeof (struct KBlock) + pkc->slen;
1347 if (size > MAX_KBLOCK_SIZE)
1349 size = MAX_KBLOCK_SIZE;
1350 pkc->mdsize = size - sizeof (struct KBlock) - pkc->slen;
1352 pkc->kb = GNUNET_malloc (size);
1353 kbe = (char *) &pkc->kb[1];
1354 memcpy (kbe, uris, pkc->slen);
1356 sptr = &kbe[pkc->slen];
1358 pkc->mdsize = GNUNET_CONTAINER_meta_data_serialize (meta,
1361 GNUNET_CONTAINER_META_DATA_SERIALIZE_PART);
1362 if (pkc->mdsize == -1)
1365 GNUNET_free (pkc->kb);
1366 if (pkc->dsh != NULL)
1367 GNUNET_DATASTORE_disconnect (pkc->dsh, GNUNET_NO);
1368 cont (cont_cls, NULL, _("Internal error."));
1372 size = sizeof (struct KBlock) + pkc->slen + pkc->mdsize;
1374 pkc->cpy = GNUNET_malloc (size);
1375 pkc->cpy->purpose.size = htonl (sizeof (struct GNUNET_CRYPTO_RsaSignaturePurpose) +
1376 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded) +
1379 pkc->cpy->purpose.purpose = htonl(GNUNET_SIGNATURE_PURPOSE_FS_KBLOCK);
1380 pkc->ksk_uri = GNUNET_FS_uri_dup (ksk_uri);
1381 GNUNET_SCHEDULER_add_continuation (h->sched,
1384 GNUNET_SCHEDULER_REASON_PREREQ_DONE);
1389 * Context for the SKS publication.
1391 struct PublishSksContext
1395 * Global FS context.
1397 struct GNUNET_FS_Uri *uri;
1400 * Handle to the datastore.
1402 struct GNUNET_DATASTORE_Handle *dsh;
1405 * Function to call once we're done.
1407 GNUNET_FS_PublishContinuation cont;
1418 * Function called by the datastore API with
1419 * the result from the PUT (SBlock) request.
1421 * @param cls closure of type "struct PublishSksContext*"
1422 * @param success GNUNET_OK on success
1423 * @param msg error message (or NULL)
1426 sb_put_cont (void *cls,
1430 struct PublishSksContext *psc = cls;
1432 if (NULL != psc->dsh)
1433 GNUNET_DATASTORE_disconnect (psc->dsh, GNUNET_NO);
1434 if (GNUNET_OK != success)
1435 psc->cont (psc->cont_cls,
1439 psc->cont (psc->cont_cls,
1442 GNUNET_FS_uri_destroy (psc->uri);
1448 * Publish an SBlock on GNUnet.
1450 * @param h handle to the file sharing subsystem
1451 * @param namespace namespace to publish in
1452 * @param identifier identifier to use
1453 * @param update update identifier to use
1454 * @param meta metadata to use
1455 * @param uri URI to refer to in the SBlock
1456 * @param expirationTime when the SBlock expires
1457 * @param anonymity anonymity level for the SBlock
1458 * @param priority priority for the SBlock
1459 * @param options publication options
1460 * @param cont continuation
1461 * @param cont_cls closure for cont
1464 GNUNET_FS_publish_sks (struct GNUNET_FS_Handle *h,
1465 struct GNUNET_FS_Namespace *namespace,
1466 const char *identifier,
1468 struct GNUNET_CONTAINER_MetaData *meta,
1469 struct GNUNET_FS_Uri *uri,
1470 struct GNUNET_TIME_Absolute expirationTime,
1473 enum GNUNET_FS_PublishOptions options,
1474 GNUNET_FS_PublishContinuation cont,
1477 struct PublishSksContext *psc;
1478 struct GNUNET_CRYPTO_AesSessionKey sk;
1479 struct GNUNET_CRYPTO_AesInitializationVector iv;
1480 struct GNUNET_FS_Uri *sks_uri;
1488 struct SBlock *sb_enc;
1490 GNUNET_HashCode key; /* hash of thisId = key */
1491 GNUNET_HashCode id; /* hash of hc = identifier */
1493 uris = GNUNET_FS_uri_to_string (uri);
1494 slen = strlen (uris) + 1;
1495 idlen = strlen (identifier);
1498 nidlen = strlen (update) + 1;
1499 mdsize = GNUNET_CONTAINER_meta_data_get_serialized_size (meta);
1501 size = sizeof (struct SBlock) + slen + nidlen + mdsize;
1502 if (size > MAX_SBLOCK_SIZE)
1504 size = MAX_SBLOCK_SIZE;
1505 mdsize = size - (sizeof (struct SBlock) + slen + nidlen);
1507 sb = GNUNET_malloc (sizeof (struct SBlock) + size);
1508 dest = (char *) &sb[1];
1509 memcpy (dest, update, nidlen);
1511 memcpy (dest, uris, slen);
1513 mdsize = GNUNET_CONTAINER_meta_data_serialize (meta,
1516 GNUNET_CONTAINER_META_DATA_SERIALIZE_PART);
1524 _("Internal error."));
1527 size = sizeof (struct SBlock) + mdsize + slen + nidlen;
1528 sb_enc = GNUNET_malloc (sizeof (struct SBlock) + size);
1529 GNUNET_CRYPTO_hash (identifier, idlen, &key);
1530 GNUNET_CRYPTO_hash (&key, sizeof (GNUNET_HashCode), &id);
1531 sks_uri = GNUNET_malloc (sizeof (struct GNUNET_FS_Uri));
1532 sks_uri->type = sks;
1533 GNUNET_CRYPTO_rsa_key_get_public (namespace->key, &sb_enc->subspace);
1534 GNUNET_CRYPTO_hash (&sb_enc->subspace,
1535 sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
1536 &sks_uri->data.sks.namespace);
1537 sks_uri->data.sks.identifier = GNUNET_strdup (identifier);
1538 GNUNET_CRYPTO_hash_xor (&id,
1539 &sks_uri->data.sks.namespace,
1540 &sb_enc->identifier);
1541 GNUNET_CRYPTO_hash_to_aes_key (&key, &sk, &iv);
1542 GNUNET_CRYPTO_aes_encrypt (&sb[1],
1543 size - sizeof (struct SBlock),
1547 sb_enc->purpose.purpose = htonl (GNUNET_SIGNATURE_PURPOSE_FS_SBLOCK);
1548 sb_enc->purpose.size = htonl(slen + mdsize + nidlen
1549 + sizeof(struct SBlock)
1550 - sizeof(struct GNUNET_CRYPTO_RsaSignature));
1551 GNUNET_assert (GNUNET_OK ==
1552 GNUNET_CRYPTO_rsa_sign (namespace->key,
1554 &sb_enc->signature));
1555 psc = GNUNET_malloc (sizeof(struct PublishSksContext));
1558 psc->cont_cls = cont_cls;
1559 if (0 != (options & GNUNET_FS_PUBLISH_OPTION_SIMULATE_ONLY))
1561 GNUNET_free (sb_enc);
1568 psc->dsh = GNUNET_DATASTORE_connect (h->cfg, h->sched);
1569 if (NULL == psc->dsh)
1571 GNUNET_free (sb_enc);
1575 _("Failed to connect to datastore."));
1579 GNUNET_DATASTORE_put (psc->dsh,
1584 GNUNET_DATASTORE_BLOCKTYPE_SBLOCK,
1588 GNUNET_CONSTANTS_SERVICE_TIMEOUT,
1592 GNUNET_free (sb_enc);
1596 /* end of fs_publish.c */