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);
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);
904 GNUNET_CRYPTO_hash_file (sc->h->sched,
905 GNUNET_SCHEDULER_PRIORITY_IDLE,
906 p->data.file.filename,
912 publish_content (sc);
917 * Signal the FS's progress function that we are starting
920 * @param cls closure (of type "struct GNUNET_FS_PublishContext*")
921 * @param fi the entry in the publish-structure
922 * @param length length of the file or directory
923 * @param meta metadata for the file or directory (can be modified)
924 * @param uri pointer to the keywords that will be used for this entry (can be modified)
925 * @param anonymity pointer to selected anonymity level (can be modified)
926 * @param priority pointer to selected priority (can be modified)
927 * @param expirationTime pointer to selected expiration time (can be modified)
928 * @param client_info pointer to client context set upon creation (can be modified)
929 * @return GNUNET_OK to continue (always)
932 fip_signal_start(void *cls,
933 struct GNUNET_FS_FileInformation *fi,
935 struct GNUNET_CONTAINER_MetaData *meta,
936 struct GNUNET_FS_Uri **uri,
939 struct GNUNET_TIME_Absolute *expirationTime,
942 struct GNUNET_FS_PublishContext *sc = cls;
943 struct GNUNET_FS_ProgressInfo pi;
945 pi.status = GNUNET_FS_STATUS_PUBLISH_START;
946 make_publish_status (&pi, sc, fi, 0);
947 *client_info = sc->h->upcb (sc->h->upcb_cls,
954 * Publish a file or directory.
956 * @param h handle to the file sharing subsystem
957 * @param fi information about the file or directory structure to publish
958 * @param namespace namespace to publish the file in, NULL for no namespace
959 * @param nid identifier to use for the publishd content in the namespace
960 * (can be NULL, must be NULL if namespace is NULL)
961 * @param nuid update-identifier that will be used for future updates
962 * (can be NULL, must be NULL if namespace or nid is NULL)
963 * @param options options for the publication
964 * @return context that can be used to control the publish operation
966 struct GNUNET_FS_PublishContext *
967 GNUNET_FS_publish_start (struct GNUNET_FS_Handle *h,
968 struct GNUNET_FS_FileInformation *fi,
969 struct GNUNET_FS_Namespace *namespace,
972 enum GNUNET_FS_PublishOptions options)
974 struct GNUNET_FS_PublishContext *ret;
975 struct GNUNET_DATASTORE_Handle *dsh;
977 if (0 == (options & GNUNET_FS_PUBLISH_OPTION_SIMULATE_ONLY))
979 dsh = GNUNET_DATASTORE_connect (h->cfg,
988 ret = GNUNET_malloc (sizeof (struct GNUNET_FS_PublishContext));
992 ret->namespace = namespace;
993 if (namespace != NULL)
996 GNUNET_assert (NULL != nid);
997 ret->nid = GNUNET_strdup (nid);
999 ret->nuid = GNUNET_strdup (nuid);
1001 // FIXME: make upload persistent!
1004 GNUNET_FS_file_information_inspect (ret->fi,
1007 ret->fi_pos = ret->fi;
1009 // FIXME: calculate space needed for "fi"
1010 // and reserve as first task (then trigger
1011 // "do_upload" from that continuation)!
1013 = GNUNET_SCHEDULER_add_with_priority (h->sched,
1014 GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
1022 * Signal the FS's progress function that we are stopping
1025 * @param cls closure (of type "struct GNUNET_FS_PublishContext*")
1026 * @param fi the entry in the publish-structure
1027 * @param length length of the file or directory
1028 * @param meta metadata for the file or directory (can be modified)
1029 * @param uri pointer to the keywords that will be used for this entry (can be modified)
1030 * @param anonymity pointer to selected anonymity level (can be modified)
1031 * @param priority pointer to selected priority (can be modified)
1032 * @param expirationTime pointer to selected expiration time (can be modified)
1033 * @param client_info pointer to client context set upon creation (can be modified)
1034 * @return GNUNET_OK to continue (always)
1037 fip_signal_stop(void *cls,
1038 struct GNUNET_FS_FileInformation *fi,
1040 struct GNUNET_CONTAINER_MetaData *meta,
1041 struct GNUNET_FS_Uri **uri,
1042 uint32_t *anonymity,
1044 struct GNUNET_TIME_Absolute *expirationTime,
1047 struct GNUNET_FS_PublishContext*sc = cls;
1048 struct GNUNET_FS_ProgressInfo pi;
1051 off = (fi->chk_uri == NULL) ? 0 : length;
1052 pi.status = GNUNET_FS_STATUS_PUBLISH_STOPPED;
1053 make_publish_status (&pi, sc, fi, off);
1054 GNUNET_break (NULL ==
1055 sc->h->upcb (sc->h->upcb_cls,
1057 *client_info = NULL;
1063 * Stop an upload. Will abort incomplete uploads (but
1064 * not remove blocks that have already been publishd) or
1065 * simply clean up the state for completed uploads.
1066 * Must NOT be called from within the event callback!
1068 * @param sc context for the upload to stop
1071 GNUNET_FS_publish_stop (struct GNUNET_FS_PublishContext *sc)
1073 if (GNUNET_SCHEDULER_NO_TASK != sc->upload_task)
1074 GNUNET_SCHEDULER_cancel (sc->h->sched, sc->upload_task);
1076 GNUNET_assert (sc->all_done == GNUNET_YES);
1077 // FIXME: remove from persistence DB (?) --- think more about
1078 // shutdown / persistent-resume APIs!!!
1079 GNUNET_FS_file_information_inspect (sc->fi,
1082 if (GNUNET_YES == sc->in_network_wait)
1084 sc->in_network_wait = GNUNET_SYSERR;
1087 publish_cleanup (sc);
1092 * Context for the KSK publication.
1094 struct PublishKskContext
1100 struct GNUNET_FS_Uri *ksk_uri;
1103 * Global FS context.
1105 struct GNUNET_FS_Handle *h;
1108 * The master block that we are sending
1109 * (in plaintext), has "mdsize+slen" more
1110 * bytes than the struct would suggest.
1115 * Buffer of the same size as "kb" for
1116 * the encrypted version.
1121 * Handle to the datastore, NULL if we are just
1124 struct GNUNET_DATASTORE_Handle *dsh;
1127 * Function to call once we're done.
1129 GNUNET_FS_PublishContinuation cont;
1137 * When should the KBlocks expire?
1139 struct GNUNET_TIME_Absolute expirationTime;
1142 * Size of the serialized metadata.
1147 * Size of the (CHK) URI as a string.
1152 * Keyword that we are currently processing.
1157 * Anonymity level for the KBlocks.
1162 * Priority for the KBlocks.
1169 * Continuation of "GNUNET_FS_publish_ksk" that performs
1170 * the actual publishing operation (iterating over all
1173 * @param cls closure of type "struct PublishKskContext*"
1177 publish_ksk_cont (void *cls,
1178 const struct GNUNET_SCHEDULER_TaskContext *tc);
1182 * Function called by the datastore API with
1183 * the result from the PUT request.
1185 * @param cls closure of type "struct PublishKskContext*"
1186 * @param success GNUNET_OK on success
1187 * @param msg error message (or NULL)
1190 kb_put_cont (void *cls,
1194 struct PublishKskContext *pkc = cls;
1196 if (GNUNET_OK != success)
1198 GNUNET_DATASTORE_disconnect (pkc->dsh, GNUNET_NO);
1199 GNUNET_free (pkc->cpy);
1200 GNUNET_free (pkc->kb);
1201 pkc->cont (pkc->cont_cls,
1204 GNUNET_FS_uri_destroy (pkc->ksk_uri);
1208 GNUNET_SCHEDULER_add_continuation (pkc->h->sched,
1211 GNUNET_SCHEDULER_REASON_PREREQ_DONE);
1216 * Continuation of "GNUNET_FS_publish_ksk" that performs the actual
1217 * publishing operation (iterating over all of the keywords).
1219 * @param cls closure of type "struct PublishKskContext*"
1223 publish_ksk_cont (void *cls,
1224 const struct GNUNET_SCHEDULER_TaskContext *tc)
1226 struct PublishKskContext *pkc = cls;
1227 const char *keyword;
1228 GNUNET_HashCode key;
1229 GNUNET_HashCode query;
1230 struct GNUNET_CRYPTO_AesSessionKey skey;
1231 struct GNUNET_CRYPTO_AesInitializationVector iv;
1232 struct GNUNET_CRYPTO_RsaPrivateKey *pk;
1235 if ( (pkc->i == pkc->ksk_uri->data.ksk.keywordCount) ||
1236 (NULL == pkc->dsh) )
1238 if (NULL != pkc->dsh)
1239 GNUNET_DATASTORE_disconnect (pkc->dsh, GNUNET_NO);
1240 GNUNET_free (pkc->cpy);
1241 GNUNET_free (pkc->kb);
1242 pkc->cont (pkc->cont_cls,
1245 GNUNET_FS_uri_destroy (pkc->ksk_uri);
1249 keyword = pkc->ksk_uri->data.ksk.keywords[pkc->i++];
1250 /* first character of keyword indicates if it is
1251 mandatory or not -- ignore for hashing */
1252 GNUNET_CRYPTO_hash (&keyword[1], strlen (&keyword[1]), &key);
1253 GNUNET_CRYPTO_hash_to_aes_key (&key, &skey, &iv);
1254 GNUNET_CRYPTO_aes_encrypt (&pkc->kb[1],
1255 pkc->slen + pkc->mdsize,
1259 pk = GNUNET_CRYPTO_rsa_key_create_from_hash (&key);
1260 GNUNET_CRYPTO_rsa_key_get_public (pk, &pkc->cpy->keyspace);
1261 GNUNET_CRYPTO_hash (&pkc->cpy->keyspace,
1262 sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
1264 GNUNET_assert (GNUNET_OK ==
1265 GNUNET_CRYPTO_rsa_sign (pk,
1267 &pkc->cpy->signature));
1268 GNUNET_CRYPTO_rsa_key_free (pk);
1269 GNUNET_DATASTORE_put (pkc->dsh,
1273 sizeof (struct KBlock) +
1276 GNUNET_DATASTORE_BLOCKTYPE_KBLOCK,
1279 pkc->expirationTime,
1280 GNUNET_CONSTANTS_SERVICE_TIMEOUT,
1287 * Publish a CHK under various keywords on GNUnet.
1289 * @param h handle to the file sharing subsystem
1290 * @param ksk_uri keywords to use
1291 * @param meta metadata to use
1292 * @param uri URI to refer to in the KBlock
1293 * @param expirationTime when the KBlock expires
1294 * @param anonymity anonymity level for the KBlock
1295 * @param priority priority for the KBlock
1296 * @param options publication options
1297 * @param cont continuation
1298 * @param cont_cls closure for cont
1301 GNUNET_FS_publish_ksk (struct GNUNET_FS_Handle *h,
1302 struct GNUNET_FS_Uri *ksk_uri,
1303 struct GNUNET_CONTAINER_MetaData *meta,
1304 struct GNUNET_FS_Uri *uri,
1305 struct GNUNET_TIME_Absolute expirationTime,
1308 enum GNUNET_FS_PublishOptions options,
1309 GNUNET_FS_PublishContinuation cont,
1312 struct PublishKskContext *pkc;
1318 pkc = GNUNET_malloc (sizeof (struct PublishKskContext));
1320 pkc->expirationTime = expirationTime;
1321 pkc->anonymity = anonymity;
1322 pkc->priority = priority;
1324 pkc->cont_cls = cont_cls;
1325 if (0 == (options & GNUNET_FS_PUBLISH_OPTION_SIMULATE_ONLY))
1327 pkc->dsh = GNUNET_DATASTORE_connect (h->cfg,
1329 if (pkc->dsh == NULL)
1331 cont (cont_cls, NULL, _("Could not connect to datastore."));
1339 pkc->mdsize = GNUNET_CONTAINER_meta_data_get_serialized_size (meta);
1340 GNUNET_assert (pkc->mdsize >= 0);
1341 uris = GNUNET_FS_uri_to_string (uri);
1342 pkc->slen = strlen (uris) + 1;
1343 size = pkc->mdsize + sizeof (struct KBlock) + pkc->slen;
1344 if (size > MAX_KBLOCK_SIZE)
1346 size = MAX_KBLOCK_SIZE;
1347 pkc->mdsize = size - sizeof (struct KBlock) - pkc->slen;
1349 pkc->kb = GNUNET_malloc (size);
1350 kbe = (char *) &pkc->kb[1];
1351 memcpy (kbe, uris, pkc->slen);
1353 sptr = &kbe[pkc->slen];
1355 pkc->mdsize = GNUNET_CONTAINER_meta_data_serialize (meta,
1358 GNUNET_CONTAINER_META_DATA_SERIALIZE_PART);
1359 if (pkc->mdsize == -1)
1362 GNUNET_free (pkc->kb);
1363 if (pkc->dsh != NULL)
1364 GNUNET_DATASTORE_disconnect (pkc->dsh, GNUNET_NO);
1365 cont (cont_cls, NULL, _("Internal error."));
1369 size = sizeof (struct KBlock) + pkc->slen + pkc->mdsize;
1371 pkc->cpy = GNUNET_malloc (size);
1372 pkc->cpy->purpose.size = htonl (sizeof (struct GNUNET_CRYPTO_RsaSignaturePurpose) +
1373 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded) +
1376 pkc->cpy->purpose.purpose = htonl(GNUNET_SIGNATURE_PURPOSE_FS_KBLOCK);
1377 pkc->ksk_uri = GNUNET_FS_uri_dup (ksk_uri);
1378 GNUNET_SCHEDULER_add_continuation (h->sched,
1381 GNUNET_SCHEDULER_REASON_PREREQ_DONE);
1386 * Context for the SKS publication.
1388 struct PublishSksContext
1392 * Global FS context.
1394 struct GNUNET_FS_Uri *uri;
1397 * Handle to the datastore.
1399 struct GNUNET_DATASTORE_Handle *dsh;
1402 * Function to call once we're done.
1404 GNUNET_FS_PublishContinuation cont;
1415 * Function called by the datastore API with
1416 * the result from the PUT (SBlock) request.
1418 * @param cls closure of type "struct PublishSksContext*"
1419 * @param success GNUNET_OK on success
1420 * @param msg error message (or NULL)
1423 sb_put_cont (void *cls,
1427 struct PublishSksContext *psc = cls;
1429 if (NULL != psc->dsh)
1430 GNUNET_DATASTORE_disconnect (psc->dsh, GNUNET_NO);
1431 if (GNUNET_OK != success)
1432 psc->cont (psc->cont_cls,
1436 psc->cont (psc->cont_cls,
1439 GNUNET_FS_uri_destroy (psc->uri);
1445 * Publish an SBlock on GNUnet.
1447 * @param h handle to the file sharing subsystem
1448 * @param namespace namespace to publish in
1449 * @param identifier identifier to use
1450 * @param update update identifier to use
1451 * @param meta metadata to use
1452 * @param uri URI to refer to in the SBlock
1453 * @param expirationTime when the SBlock expires
1454 * @param anonymity anonymity level for the SBlock
1455 * @param priority priority for the SBlock
1456 * @param options publication options
1457 * @param cont continuation
1458 * @param cont_cls closure for cont
1461 GNUNET_FS_publish_sks (struct GNUNET_FS_Handle *h,
1462 struct GNUNET_FS_Namespace *namespace,
1463 const char *identifier,
1465 struct GNUNET_CONTAINER_MetaData *meta,
1466 struct GNUNET_FS_Uri *uri,
1467 struct GNUNET_TIME_Absolute expirationTime,
1470 enum GNUNET_FS_PublishOptions options,
1471 GNUNET_FS_PublishContinuation cont,
1474 struct PublishSksContext *psc;
1475 struct GNUNET_CRYPTO_AesSessionKey sk;
1476 struct GNUNET_CRYPTO_AesInitializationVector iv;
1477 struct GNUNET_FS_Uri *sks_uri;
1485 struct SBlock *sb_enc;
1487 GNUNET_HashCode key; /* hash of thisId = key */
1488 GNUNET_HashCode id; /* hash of hc = identifier */
1490 uris = GNUNET_FS_uri_to_string (uri);
1491 slen = strlen (uris) + 1;
1492 idlen = strlen (identifier);
1495 nidlen = strlen (update) + 1;
1496 mdsize = GNUNET_CONTAINER_meta_data_get_serialized_size (meta);
1498 size = sizeof (struct SBlock) + slen + nidlen + mdsize;
1499 if (size > MAX_SBLOCK_SIZE)
1501 size = MAX_SBLOCK_SIZE;
1502 mdsize = size - (sizeof (struct SBlock) + slen + nidlen);
1504 sb = GNUNET_malloc (sizeof (struct SBlock) + size);
1505 dest = (char *) &sb[1];
1506 memcpy (dest, update, nidlen);
1508 memcpy (dest, uris, slen);
1510 mdsize = GNUNET_CONTAINER_meta_data_serialize (meta,
1513 GNUNET_CONTAINER_META_DATA_SERIALIZE_PART);
1521 _("Internal error."));
1524 size = sizeof (struct SBlock) + mdsize + slen + nidlen;
1525 sb_enc = GNUNET_malloc (sizeof (struct SBlock) + size);
1526 GNUNET_CRYPTO_hash (identifier, idlen, &key);
1527 GNUNET_CRYPTO_hash (&key, sizeof (GNUNET_HashCode), &id);
1528 sks_uri = GNUNET_malloc (sizeof (struct GNUNET_FS_Uri));
1529 sks_uri->type = sks;
1530 GNUNET_CRYPTO_rsa_key_get_public (namespace->key, &sb_enc->subspace);
1531 GNUNET_CRYPTO_hash (&sb_enc->subspace,
1532 sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
1533 &sks_uri->data.sks.namespace);
1534 sks_uri->data.sks.identifier = GNUNET_strdup (identifier);
1535 GNUNET_CRYPTO_hash_xor (&id,
1536 &sks_uri->data.sks.namespace,
1537 &sb_enc->identifier);
1538 GNUNET_CRYPTO_hash_to_aes_key (&key, &sk, &iv);
1539 GNUNET_CRYPTO_aes_encrypt (&sb[1],
1540 size - sizeof (struct SBlock),
1544 sb_enc->purpose.purpose = htonl (GNUNET_SIGNATURE_PURPOSE_FS_SBLOCK);
1545 sb_enc->purpose.size = htonl(slen + mdsize + nidlen
1546 + sizeof(struct SBlock)
1547 - sizeof(struct GNUNET_CRYPTO_RsaSignature));
1548 GNUNET_assert (GNUNET_OK ==
1549 GNUNET_CRYPTO_rsa_sign (namespace->key,
1551 &sb_enc->signature));
1552 psc = GNUNET_malloc (sizeof(struct PublishSksContext));
1555 psc->cont_cls = cont_cls;
1556 if (0 != (options & GNUNET_FS_PUBLISH_OPTION_SIMULATE_ONLY))
1558 GNUNET_free (sb_enc);
1565 psc->dsh = GNUNET_DATASTORE_connect (h->cfg, h->sched);
1566 if (NULL == psc->dsh)
1568 GNUNET_free (sb_enc);
1572 _("Failed to connect to datastore."));
1576 GNUNET_DATASTORE_put (psc->dsh,
1581 GNUNET_DATASTORE_BLOCKTYPE_SBLOCK,
1585 GNUNET_CONSTANTS_SERVICE_TIMEOUT,
1589 GNUNET_free (sb_enc);
1593 /* end of fs_publish.c */