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 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 * Main function that performs the upload.
47 * @param cls "struct GNUNET_FS_PublishContext" identifies the upload
48 * @param tc task context
52 const struct GNUNET_SCHEDULER_TaskContext *tc);
56 * Context for "ds_put_cont".
61 * Current publishing context.
63 struct GNUNET_FS_PublishContext *sc;
66 * Specific file with the block.
68 struct GNUNET_FS_FileInformation *p;
71 * Function to run next, if any (can be NULL).
73 GNUNET_SCHEDULER_Task cont;
83 * Fill in all of the generic fields for
86 * @param pi structure to fill in
87 * @param sc overall publishing context
88 * @param p file information for the file being published
89 * @param offset where in the file are we so far
92 make_publish_status (struct GNUNET_FS_ProgressInfo *pi,
93 struct GNUNET_FS_PublishContext *sc,
94 const struct GNUNET_FS_FileInformation *p,
97 pi->value.publish.sc = sc;
98 pi->value.publish.fi = p;
99 pi->value.publish.cctx
101 pi->value.publish.pctx
102 = (NULL == p->dir) ? NULL : p->dir->client_info;
103 pi->value.publish.filename
104 = (p->is_directory) ? p->data.dir.dirname : p->data.file.filename;
105 pi->value.publish.size
106 = (p->is_directory) ? p->data.dir.dir_size : p->data.file.file_size;
107 pi->value.publish.eta
108 = GNUNET_TIME_calculate_eta (p->start_time,
110 pi->value.publish.size);
111 pi->value.publish.completed = offset;
112 pi->value.publish.duration = GNUNET_TIME_absolute_get_duration (p->start_time);
113 pi->value.publish.anonymity = p->anonymity;
118 * Cleanup the publish context, we're done
121 * @param sc struct to clean up after
124 publish_cleanup (struct GNUNET_FS_PublishContext *sc)
126 GNUNET_FS_file_information_destroy (sc->fi, NULL, NULL);
127 if (sc->namespace != NULL)
128 GNUNET_FS_namespace_delete (sc->namespace, GNUNET_NO);
129 GNUNET_free_non_null (sc->nid);
130 GNUNET_free_non_null (sc->nuid);
131 GNUNET_DATASTORE_disconnect (sc->dsh, GNUNET_NO);
132 if (sc->client != NULL)
133 GNUNET_CLIENT_disconnect (sc->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,
158 publish_cleanup (pcc->sc);
161 GNUNET_assert (GNUNET_YES == pcc->sc->in_network_wait);
162 pcc->sc->in_network_wait = GNUNET_NO;
163 if (GNUNET_OK != success)
165 GNUNET_asprintf (&pcc->p->emsg,
166 _("Upload failed: %s"),
168 GNUNET_FS_file_information_sync (pcc->p);
169 pi.status = GNUNET_FS_STATUS_PUBLISH_ERROR;
170 make_publish_status (&pi, pcc->sc, pcc->p, 0);
171 pi.value.publish.eta = GNUNET_TIME_UNIT_FOREVER_REL;
172 pi.value.publish.specifics.error.message = pcc->p->emsg;
174 = pcc->sc->h->upcb (pcc->sc->h->upcb_cls,
177 GNUNET_FS_file_information_sync (pcc->p);
178 if (NULL != pcc->cont)
180 = GNUNET_SCHEDULER_add_with_priority (pcc->sc->h->sched,
181 GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
189 * Generate the callback that signals clients
190 * that a file (or directory) has been completely
193 * @param p the completed upload
194 * @param sc context of the publication
197 signal_publish_completion (struct GNUNET_FS_FileInformation *p,
198 struct GNUNET_FS_PublishContext *sc)
200 struct GNUNET_FS_ProgressInfo pi;
202 pi.status = GNUNET_FS_STATUS_PUBLISH_COMPLETED;
203 make_publish_status (&pi, sc, p,
204 GNUNET_ntohll (p->chk_uri->data.chk.file_length));
205 pi.value.publish.eta = GNUNET_TIME_UNIT_ZERO;
206 pi.value.publish.specifics.completed.chk_uri = p->chk_uri;
208 = sc->h->upcb (sc->h->upcb_cls,
214 * Generate the callback that signals clients
215 * that a file (or directory) has encountered
216 * a problem during publication.
218 * @param p the upload that had trouble
219 * @param sc context of the publication
220 * @param emsg error message
223 signal_publish_error (struct GNUNET_FS_FileInformation *p,
224 struct GNUNET_FS_PublishContext *sc,
227 struct GNUNET_FS_ProgressInfo pi;
229 p->emsg = GNUNET_strdup (emsg);
230 pi.status = GNUNET_FS_STATUS_PUBLISH_ERROR;
231 make_publish_status (&pi, sc, p, 0);
232 pi.value.publish.eta = GNUNET_TIME_UNIT_FOREVER_REL;
233 pi.value.publish.specifics.error.message =emsg;
235 = sc->h->upcb (sc->h->upcb_cls,
241 * We've finished publishing the SBlock as part of a larger upload.
242 * Check the result and complete the larger upload.
244 * @param cls the "struct GNUNET_FS_PublishContext*" of the larger upload
245 * @param uri URI of the published SBlock
246 * @param emsg NULL on success, otherwise error message
249 publish_sblocks_cont (void *cls,
250 const struct GNUNET_FS_Uri *uri,
253 struct GNUNET_FS_PublishContext *sc = cls;
256 signal_publish_error (sc->fi,
261 // FIXME: release the datastore reserve here!
262 signal_publish_completion (sc->fi, sc);
263 sc->all_done = GNUNET_YES;
268 * We are almost done publishing the structure,
269 * add SBlocks (if needed).
271 * @param sc overall upload data
274 publish_sblock (struct GNUNET_FS_PublishContext *sc)
276 if (NULL != sc->namespace)
277 GNUNET_FS_publish_sks (sc->h,
283 sc->fi->expirationTime,
287 &publish_sblocks_cont,
290 publish_sblocks_cont (sc, NULL, NULL);
295 * We've finished publishing a KBlock as part of a larger upload.
296 * Check the result and continue the larger upload.
298 * @param cls the "struct GNUNET_FS_PublishContext*"
299 * of the larger upload
300 * @param uri URI of the published blocks
301 * @param emsg NULL on success, otherwise error message
304 publish_kblocks_cont (void *cls,
305 const struct GNUNET_FS_Uri *uri,
308 struct GNUNET_FS_PublishContext *sc = cls;
309 struct GNUNET_FS_FileInformation *p = sc->fi_pos;
313 signal_publish_error (p, sc, emsg);
315 = GNUNET_SCHEDULER_add_with_priority (sc->h->sched,
316 GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
321 GNUNET_FS_file_information_sync (p);
323 signal_publish_completion (p, sc);
324 /* move on to next file */
326 sc->fi_pos = p->next;
330 = GNUNET_SCHEDULER_add_with_priority (sc->h->sched,
331 GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
338 * Function called by the tree encoder to obtain
339 * a block of plaintext data (for the lowest level
342 * @param cls our publishing context
343 * @param offset identifies which block to get
344 * @param max (maximum) number of bytes to get; returning
345 * fewer will also cause errors
346 * @param buf where to copy the plaintext buffer
347 * @param emsg location to store an error message (on error)
348 * @return number of bytes copied to buf, 0 on error
351 block_reader (void *cls,
357 struct GNUNET_FS_PublishContext *sc = cls;
358 struct GNUNET_FS_FileInformation *p;
365 pt_size = GNUNET_MIN(max,
366 p->data.dir.dir_size - offset);
367 dd = p->data.dir.dir_data;
374 pt_size = GNUNET_MIN(max,
375 p->data.file.file_size - offset);
377 return 0; /* calling reader with pt_size==0
378 might free buf, so don't! */
380 p->data.file.reader (p->data.file.reader_cls,
392 * The tree encoder has finished processing a
393 * file. Call it's finish method and deal with
396 * @param cls our publishing context
397 * @param tc scheduler's task context (not used)
400 encode_cont (void *cls,
401 const struct GNUNET_SCHEDULER_TaskContext *tc)
403 struct GNUNET_FS_PublishContext *sc = cls;
404 struct GNUNET_FS_FileInformation *p;
405 struct GNUNET_FS_ProgressInfo pi;
409 GNUNET_FS_tree_encoder_finish (p->te,
415 GNUNET_asprintf (&p->emsg,
416 _("Upload failed: %s"),
419 GNUNET_FS_file_information_sync (p);
420 pi.status = GNUNET_FS_STATUS_PUBLISH_ERROR;
421 make_publish_status (&pi, sc, p, 0);
422 pi.value.publish.eta = GNUNET_TIME_UNIT_FOREVER_REL;
423 pi.value.publish.specifics.error.message = p->emsg;
425 = sc->h->upcb (sc->h->upcb_cls,
428 /* continue with main */
430 = GNUNET_SCHEDULER_add_with_priority (sc->h->sched,
431 GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
438 * Function called asking for the current (encoded)
439 * block to be processed. After processing the
440 * client should either call "GNUNET_FS_tree_encode_next"
441 * or (on error) "GNUNET_FS_tree_encode_finish".
444 * @param query the query for the block (key for lookup in the datastore)
445 * @param offset offset of the block in the file
446 * @param type type of the block (IBLOCK or DBLOCK)
447 * @param block the (encrypted) block
448 * @param block_size size of block (in bytes)
451 block_proc (void *cls,
452 const GNUNET_HashCode *query,
458 struct GNUNET_FS_PublishContext *sc = cls;
459 struct GNUNET_FS_FileInformation *p;
460 struct PutContCtx * dpc_cls;
461 struct OnDemandBlock odb;
467 = GNUNET_SCHEDULER_add_with_priority (sc->h->sched,
468 GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
474 GNUNET_assert (GNUNET_NO == sc->in_network_wait);
475 sc->in_network_wait = GNUNET_YES;
476 dpc_cls = GNUNET_malloc(sizeof(struct PutContCtx));
477 dpc_cls->cont = &do_upload;
478 dpc_cls->cont_cls = sc;
481 if ( (! p->is_directory) &&
482 (GNUNET_YES == p->data.file.do_index) &&
483 (type == GNUNET_DATASTORE_BLOCKTYPE_DBLOCK) )
486 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
487 "Indexing block `%s' for offset %llu with index size %u\n",
489 (unsigned long long) offset,
490 sizeof (struct OnDemandBlock));
492 odb.offset = GNUNET_htonll (offset);
493 odb.file_id = p->data.file.file_id;
494 GNUNET_DATASTORE_put (sc->dsh,
497 sizeof(struct OnDemandBlock),
499 GNUNET_DATASTORE_BLOCKTYPE_ONDEMAND,
503 GNUNET_CONSTANTS_SERVICE_TIMEOUT,
509 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
510 "Publishing block `%s' for offset %llu with size %u\n",
512 (unsigned long long) offset,
513 (unsigned int) block_size);
515 GNUNET_DATASTORE_put (sc->dsh,
524 GNUNET_CONSTANTS_SERVICE_TIMEOUT,
531 * Function called with information about our
532 * progress in computing the tree encoding.
535 * @param offset where are we in the file
536 * @param pt_block plaintext of the currently processed block
537 * @param pt_size size of pt_block
538 * @param depth depth of the block in the tree
541 progress_proc (void *cls,
543 const void *pt_block,
547 struct GNUNET_FS_PublishContext *sc = cls;
548 struct GNUNET_FS_FileInformation *p;
549 struct GNUNET_FS_ProgressInfo pi;
552 pi.status = GNUNET_FS_STATUS_PUBLISH_PROGRESS;
553 make_publish_status (&pi, sc, p, offset);
554 pi.value.publish.specifics.progress.data = pt_block;
555 pi.value.publish.specifics.progress.offset = offset;
556 pi.value.publish.specifics.progress.data_len = pt_size;
557 pi.value.publish.specifics.progress.depth = depth;
559 = sc->h->upcb (sc->h->upcb_cls,
565 * We are uploading a file or directory; load (if necessary) the next
566 * block into memory, encrypt it and send it to the FS service. Then
567 * continue with the main task.
569 * @param sc overall upload data
572 publish_content (struct GNUNET_FS_PublishContext *sc)
574 struct GNUNET_FS_FileInformation *p;
576 struct GNUNET_FS_DirectoryBuilder *db;
577 struct GNUNET_FS_FileInformation *dirpos;
586 db = GNUNET_FS_directory_builder_create (p->meta);
587 dirpos = p->data.dir.entries;
588 while (NULL != dirpos)
590 if (dirpos->is_directory)
592 raw_data = dirpos->data.dir.dir_data;
593 dirpos->data.dir.dir_data = NULL;
598 if ( (dirpos->data.file.file_size < MAX_INLINE_SIZE) &&
599 (dirpos->data.file.file_size > 0) )
601 raw_data = GNUNET_malloc (dirpos->data.file.file_size);
603 if (dirpos->data.file.file_size !=
604 dirpos->data.file.reader (dirpos->data.file.reader_cls,
606 dirpos->data.file.file_size,
610 GNUNET_free_non_null (emsg);
611 GNUNET_free (raw_data);
616 GNUNET_FS_directory_builder_add (db,
620 GNUNET_free_non_null (raw_data);
621 dirpos = dirpos->next;
623 GNUNET_FS_directory_builder_finish (db,
624 &p->data.dir.dir_size,
625 &p->data.dir.dir_data);
627 size = (p->is_directory)
628 ? p->data.dir.dir_size
629 : p->data.file.file_size;
630 p->te = GNUNET_FS_tree_encoder_create (sc->h,
639 GNUNET_FS_tree_encoder_next (p->te);
644 * Process the response (or lack thereof) from
645 * the "fs" service to our 'start index' request.
647 * @param cls closure (of type "struct GNUNET_FS_PublishContext*"_)
648 * @param msg the response we got
651 process_index_start_response (void *cls,
652 const struct GNUNET_MessageHeader *msg)
654 struct GNUNET_FS_PublishContext *sc = cls;
655 struct GNUNET_FS_FileInformation *p;
659 GNUNET_CLIENT_disconnect (sc->client, GNUNET_NO);
664 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
665 _("Can not index file `%s': %s. Will try to insert instead.\n"),
666 p->data.file.filename,
667 _("timeout on index-start request to `fs' service"));
668 p->data.file.do_index = GNUNET_NO;
669 publish_content (sc);
672 if (ntohs (msg->type) != GNUNET_MESSAGE_TYPE_FS_INDEX_START_OK)
674 msize = ntohs (msg->size);
675 emsg = (const char *) &msg[1];
676 if ( (msize <= sizeof (struct GNUNET_MessageHeader)) ||
677 (emsg[msize - sizeof(struct GNUNET_MessageHeader) - 1] != '\0') )
678 emsg = gettext_noop ("unknown error");
679 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
680 _("Can not index file `%s': %s. Will try to insert instead.\n"),
681 p->data.file.filename,
683 p->data.file.do_index = GNUNET_NO;
684 publish_content (sc);
687 p->data.file.index_start_confirmed = GNUNET_YES;
688 /* success! continue with indexing */
689 publish_content (sc);
694 * Function called once the hash computation over an
695 * indexed file has completed.
697 * @param cls closure, our publishing context
698 * @param res resulting hash, NULL on error
701 hash_for_index_cb (void *cls,
702 const GNUNET_HashCode *
705 struct GNUNET_FS_PublishContext *sc = cls;
706 struct GNUNET_FS_FileInformation *p;
707 struct IndexStartMessage *ism;
709 struct GNUNET_CLIENT_Connection *client;
717 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
718 _("Can not index file `%s': %s. Will try to insert instead.\n"),
719 p->data.file.filename,
720 _("failed to compute hash"));
721 p->data.file.do_index = GNUNET_NO;
722 publish_content (sc);
725 if (GNUNET_YES == p->data.file.index_start_confirmed)
727 publish_content (sc);
730 fn = GNUNET_STRINGS_filename_expand (p->data.file.filename);
731 slen = strlen (fn) + 1;
732 if (slen > GNUNET_SERVER_MAX_MESSAGE_SIZE - sizeof(struct IndexStartMessage))
734 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
735 _("Can not index file `%s': %s. Will try to insert instead.\n"),
737 _("filename too long"));
739 p->data.file.do_index = GNUNET_NO;
740 publish_content (sc);
744 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
745 "Hash of indexed file `%s' is `%s'\n",
746 p->data.file.filename,
749 client = GNUNET_CLIENT_connect (sc->h->sched,
754 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
755 _("Can not index file `%s': %s. Will try to insert instead.\n"),
756 p->data.file.filename,
757 _("could not connect to `fs' service"));
758 p->data.file.do_index = GNUNET_NO;
759 publish_content (sc);
763 p->data.file.file_id = *res;
764 p->data.file.have_hash = GNUNET_YES;
765 ism = GNUNET_malloc (sizeof(struct IndexStartMessage) +
767 ism->header.size = htons(sizeof(struct IndexStartMessage) +
769 ism->header.type = htons(GNUNET_MESSAGE_TYPE_FS_INDEX_START);
771 GNUNET_DISK_file_get_identifiers (p->data.file.filename,
775 ism->device = htonl (dev);
776 ism->inode = GNUNET_htonll(ino);
780 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
781 _("Failed to get file identifiers for `%s'\n"),
782 p->data.file.filename);
790 GNUNET_break (GNUNET_YES ==
791 GNUNET_CLIENT_transmit_and_get_response (client,
793 GNUNET_TIME_UNIT_FOREVER_REL,
795 &process_index_start_response,
802 * Main function that performs the upload.
803 * @param cls "struct GNUNET_FS_PublishContext" identifies the upload
804 * @param tc task context
807 do_upload (void *cls,
808 const struct GNUNET_SCHEDULER_TaskContext *tc)
810 struct GNUNET_FS_PublishContext *sc = cls;
811 struct GNUNET_FS_ProgressInfo pi;
812 struct GNUNET_FS_FileInformation *p;
815 sc->upload_task = GNUNET_SCHEDULER_NO_TASK;
819 /* upload of entire hierarchy complete,
820 publish namespace entries */
824 /* find starting position */
825 while ( (p->is_directory) &&
826 (NULL != p->data.dir.entries) &&
828 (NULL == p->data.dir.entries->chk_uri) )
830 p = p->data.dir.entries;
836 /* error with current file, abort all
837 related files as well! */
838 while (NULL != p->dir)
840 fn = GNUNET_CONTAINER_meta_data_get_by_type (p->meta,
841 EXTRACTOR_METATYPE_FILENAME);
845 GNUNET_asprintf (&p->emsg,
846 _("Recursive upload failed at `%s': %s"),
853 GNUNET_asprintf (&p->emsg,
854 _("Recursive upload failed: %s"),
857 GNUNET_FS_file_information_sync (p);
858 pi.status = GNUNET_FS_STATUS_PUBLISH_ERROR;
859 make_publish_status (&pi, sc, p, 0);
860 pi.value.publish.eta = GNUNET_TIME_UNIT_FOREVER_REL;
861 pi.value.publish.specifics.error.message = p->emsg;
863 = sc->h->upcb (sc->h->upcb_cls,
866 sc->all_done = GNUNET_YES;
869 /* handle completion */
870 if (NULL != p->chk_uri)
872 /* upload of "p" complete, publish KBlocks! */
873 if (p->keywords != NULL)
875 GNUNET_FS_publish_ksk (sc->h,
883 &publish_kblocks_cont,
888 publish_kblocks_cont (sc,
894 if ( (!p->is_directory) &&
895 (p->data.file.do_index) )
897 if (NULL == p->data.file.filename)
899 p->data.file.do_index = GNUNET_NO;
900 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
901 _("Can not index file `%s': %s. Will try to insert instead.\n"),
903 _("needs to be an actual file"));
904 publish_content (sc);
907 if (p->data.file.have_hash)
908 hash_for_index_cb (sc,
909 &p->data.file.file_id);
912 p->start_time = GNUNET_TIME_absolute_get ();
913 GNUNET_CRYPTO_hash_file (sc->h->sched,
914 GNUNET_SCHEDULER_PRIORITY_IDLE,
915 p->data.file.filename,
922 publish_content (sc);
927 * Signal the FS's progress function that we are starting
930 * @param cls closure (of type "struct GNUNET_FS_PublishContext*")
931 * @param fi the entry in the publish-structure
932 * @param length length of the file or directory
933 * @param meta metadata for the file or directory (can be modified)
934 * @param uri pointer to the keywords that will be used for this entry (can be modified)
935 * @param anonymity pointer to selected anonymity level (can be modified)
936 * @param priority pointer to selected priority (can be modified)
937 * @param expirationTime pointer to selected expiration time (can be modified)
938 * @param client_info pointer to client context set upon creation (can be modified)
939 * @return GNUNET_OK to continue (always)
942 fip_signal_start(void *cls,
943 struct GNUNET_FS_FileInformation *fi,
945 struct GNUNET_CONTAINER_MetaData *meta,
946 struct GNUNET_FS_Uri **uri,
949 struct GNUNET_TIME_Absolute *expirationTime,
952 struct GNUNET_FS_PublishContext *sc = cls;
953 struct GNUNET_FS_ProgressInfo pi;
955 pi.status = GNUNET_FS_STATUS_PUBLISH_START;
956 make_publish_status (&pi, sc, fi, 0);
957 *client_info = sc->h->upcb (sc->h->upcb_cls,
964 * Publish a file or directory.
966 * @param h handle to the file sharing subsystem
967 * @param fi information about the file or directory structure to publish
968 * @param namespace namespace to publish the file in, NULL for no namespace
969 * @param nid identifier to use for the publishd content in the namespace
970 * (can be NULL, must be NULL if namespace is NULL)
971 * @param nuid update-identifier that will be used for future updates
972 * (can be NULL, must be NULL if namespace or nid is NULL)
973 * @param options options for the publication
974 * @return context that can be used to control the publish operation
976 struct GNUNET_FS_PublishContext *
977 GNUNET_FS_publish_start (struct GNUNET_FS_Handle *h,
978 struct GNUNET_FS_FileInformation *fi,
979 struct GNUNET_FS_Namespace *namespace,
982 enum GNUNET_FS_PublishOptions options)
984 struct GNUNET_FS_PublishContext *ret;
985 struct GNUNET_DATASTORE_Handle *dsh;
987 if (0 == (options & GNUNET_FS_PUBLISH_OPTION_SIMULATE_ONLY))
989 dsh = GNUNET_DATASTORE_connect (h->cfg,
998 ret = GNUNET_malloc (sizeof (struct GNUNET_FS_PublishContext));
1002 ret->namespace = namespace;
1003 if (namespace != NULL)
1006 GNUNET_assert (NULL != nid);
1007 ret->nid = GNUNET_strdup (nid);
1009 ret->nuid = GNUNET_strdup (nuid);
1011 // FIXME: make upload persistent!
1014 GNUNET_FS_file_information_inspect (ret->fi,
1017 ret->fi_pos = ret->fi;
1019 // FIXME: calculate space needed for "fi"
1020 // and reserve as first task (then trigger
1021 // "do_upload" from that continuation)!
1023 = GNUNET_SCHEDULER_add_with_priority (h->sched,
1024 GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
1032 * Signal the FS's progress function that we are stopping
1035 * @param cls closure (of type "struct GNUNET_FS_PublishContext*")
1036 * @param fi the entry in the publish-structure
1037 * @param length length of the file or directory
1038 * @param meta metadata for the file or directory (can be modified)
1039 * @param uri pointer to the keywords that will be used for this entry (can be modified)
1040 * @param anonymity pointer to selected anonymity level (can be modified)
1041 * @param priority pointer to selected priority (can be modified)
1042 * @param expirationTime pointer to selected expiration time (can be modified)
1043 * @param client_info pointer to client context set upon creation (can be modified)
1044 * @return GNUNET_OK to continue (always)
1047 fip_signal_stop(void *cls,
1048 struct GNUNET_FS_FileInformation *fi,
1050 struct GNUNET_CONTAINER_MetaData *meta,
1051 struct GNUNET_FS_Uri **uri,
1052 uint32_t *anonymity,
1054 struct GNUNET_TIME_Absolute *expirationTime,
1057 struct GNUNET_FS_PublishContext*sc = cls;
1058 struct GNUNET_FS_ProgressInfo pi;
1061 off = (fi->chk_uri == NULL) ? 0 : length;
1062 pi.status = GNUNET_FS_STATUS_PUBLISH_STOPPED;
1063 make_publish_status (&pi, sc, fi, off);
1064 GNUNET_break (NULL ==
1065 sc->h->upcb (sc->h->upcb_cls,
1067 *client_info = NULL;
1073 * Stop an upload. Will abort incomplete uploads (but
1074 * not remove blocks that have already been publishd) or
1075 * simply clean up the state for completed uploads.
1076 * Must NOT be called from within the event callback!
1078 * @param sc context for the upload to stop
1081 GNUNET_FS_publish_stop (struct GNUNET_FS_PublishContext *sc)
1083 if (GNUNET_SCHEDULER_NO_TASK != sc->upload_task)
1084 GNUNET_SCHEDULER_cancel (sc->h->sched, sc->upload_task);
1085 // FIXME: remove from persistence DB (?) --- think more about
1086 // shutdown / persistent-resume APIs!!!
1087 GNUNET_FS_file_information_inspect (sc->fi,
1090 if (GNUNET_YES == sc->in_network_wait)
1092 sc->in_network_wait = GNUNET_SYSERR;
1095 publish_cleanup (sc);
1100 * Context for the KSK publication.
1102 struct PublishKskContext
1108 struct GNUNET_FS_Uri *ksk_uri;
1111 * Global FS context.
1113 struct GNUNET_FS_Handle *h;
1116 * The master block that we are sending
1117 * (in plaintext), has "mdsize+slen" more
1118 * bytes than the struct would suggest.
1123 * Buffer of the same size as "kb" for
1124 * the encrypted version.
1129 * Handle to the datastore, NULL if we are just
1132 struct GNUNET_DATASTORE_Handle *dsh;
1135 * Function to call once we're done.
1137 GNUNET_FS_PublishContinuation cont;
1145 * When should the KBlocks expire?
1147 struct GNUNET_TIME_Absolute expirationTime;
1150 * Size of the serialized metadata.
1155 * Size of the (CHK) URI as a string.
1160 * Keyword that we are currently processing.
1165 * Anonymity level for the KBlocks.
1170 * Priority for the KBlocks.
1177 * Continuation of "GNUNET_FS_publish_ksk" that performs
1178 * the actual publishing operation (iterating over all
1181 * @param cls closure of type "struct PublishKskContext*"
1185 publish_ksk_cont (void *cls,
1186 const struct GNUNET_SCHEDULER_TaskContext *tc);
1190 * Function called by the datastore API with
1191 * the result from the PUT request.
1193 * @param cls closure of type "struct PublishKskContext*"
1194 * @param success GNUNET_OK on success
1195 * @param msg error message (or NULL)
1198 kb_put_cont (void *cls,
1202 struct PublishKskContext *pkc = cls;
1204 if (GNUNET_OK != success)
1206 GNUNET_DATASTORE_disconnect (pkc->dsh, GNUNET_NO);
1207 GNUNET_free (pkc->cpy);
1208 GNUNET_free (pkc->kb);
1209 pkc->cont (pkc->cont_cls,
1212 GNUNET_FS_uri_destroy (pkc->ksk_uri);
1216 GNUNET_SCHEDULER_add_continuation (pkc->h->sched,
1219 GNUNET_SCHEDULER_REASON_PREREQ_DONE);
1224 * Continuation of "GNUNET_FS_publish_ksk" that performs the actual
1225 * publishing operation (iterating over all of the keywords).
1227 * @param cls closure of type "struct PublishKskContext*"
1231 publish_ksk_cont (void *cls,
1232 const struct GNUNET_SCHEDULER_TaskContext *tc)
1234 struct PublishKskContext *pkc = cls;
1235 const char *keyword;
1236 GNUNET_HashCode key;
1237 GNUNET_HashCode query;
1238 struct GNUNET_CRYPTO_AesSessionKey skey;
1239 struct GNUNET_CRYPTO_AesInitializationVector iv;
1240 struct GNUNET_CRYPTO_RsaPrivateKey *pk;
1243 if ( (pkc->i == pkc->ksk_uri->data.ksk.keywordCount) ||
1244 (NULL == pkc->dsh) )
1246 if (NULL != pkc->dsh)
1247 GNUNET_DATASTORE_disconnect (pkc->dsh, GNUNET_NO);
1248 GNUNET_free (pkc->cpy);
1249 GNUNET_free (pkc->kb);
1250 pkc->cont (pkc->cont_cls,
1253 GNUNET_FS_uri_destroy (pkc->ksk_uri);
1257 keyword = pkc->ksk_uri->data.ksk.keywords[pkc->i++];
1258 /* first character of keyword indicates if it is
1259 mandatory or not -- ignore for hashing */
1260 GNUNET_CRYPTO_hash (&keyword[1], strlen (&keyword[1]), &key);
1261 GNUNET_CRYPTO_hash_to_aes_key (&key, &skey, &iv);
1262 GNUNET_CRYPTO_aes_encrypt (&pkc->kb[1],
1263 pkc->slen + pkc->mdsize,
1267 pk = GNUNET_CRYPTO_rsa_key_create_from_hash (&key);
1268 GNUNET_CRYPTO_rsa_key_get_public (pk, &pkc->cpy->keyspace);
1269 GNUNET_CRYPTO_hash (&pkc->cpy->keyspace,
1270 sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
1272 GNUNET_assert (GNUNET_OK ==
1273 GNUNET_CRYPTO_rsa_sign (pk,
1275 &pkc->cpy->signature));
1276 GNUNET_CRYPTO_rsa_key_free (pk);
1277 GNUNET_DATASTORE_put (pkc->dsh,
1281 sizeof (struct KBlock) +
1284 GNUNET_DATASTORE_BLOCKTYPE_KBLOCK,
1287 pkc->expirationTime,
1288 GNUNET_CONSTANTS_SERVICE_TIMEOUT,
1295 * Publish a CHK under various keywords on GNUnet.
1297 * @param h handle to the file sharing subsystem
1298 * @param ksk_uri keywords to use
1299 * @param meta metadata to use
1300 * @param uri URI to refer to in the KBlock
1301 * @param expirationTime when the KBlock expires
1302 * @param anonymity anonymity level for the KBlock
1303 * @param priority priority for the KBlock
1304 * @param options publication options
1305 * @param cont continuation
1306 * @param cont_cls closure for cont
1309 GNUNET_FS_publish_ksk (struct GNUNET_FS_Handle *h,
1310 const struct GNUNET_FS_Uri *ksk_uri,
1311 const struct GNUNET_CONTAINER_MetaData *meta,
1312 const struct GNUNET_FS_Uri *uri,
1313 struct GNUNET_TIME_Absolute expirationTime,
1316 enum GNUNET_FS_PublishOptions options,
1317 GNUNET_FS_PublishContinuation cont,
1320 struct PublishKskContext *pkc;
1326 pkc = GNUNET_malloc (sizeof (struct PublishKskContext));
1328 pkc->expirationTime = expirationTime;
1329 pkc->anonymity = anonymity;
1330 pkc->priority = priority;
1332 pkc->cont_cls = cont_cls;
1333 if (0 == (options & GNUNET_FS_PUBLISH_OPTION_SIMULATE_ONLY))
1335 pkc->dsh = GNUNET_DATASTORE_connect (h->cfg,
1337 if (pkc->dsh == NULL)
1339 cont (cont_cls, NULL, _("Could not connect to datastore."));
1347 pkc->mdsize = GNUNET_CONTAINER_meta_data_get_serialized_size (meta);
1348 GNUNET_assert (pkc->mdsize >= 0);
1349 uris = GNUNET_FS_uri_to_string (uri);
1350 pkc->slen = strlen (uris) + 1;
1351 size = pkc->mdsize + sizeof (struct KBlock) + pkc->slen;
1352 if (size > MAX_KBLOCK_SIZE)
1354 size = MAX_KBLOCK_SIZE;
1355 pkc->mdsize = size - sizeof (struct KBlock) - pkc->slen;
1357 pkc->kb = GNUNET_malloc (size);
1358 kbe = (char *) &pkc->kb[1];
1359 memcpy (kbe, uris, pkc->slen);
1361 sptr = &kbe[pkc->slen];
1363 pkc->mdsize = GNUNET_CONTAINER_meta_data_serialize (meta,
1366 GNUNET_CONTAINER_META_DATA_SERIALIZE_PART);
1367 if (pkc->mdsize == -1)
1370 GNUNET_free (pkc->kb);
1371 if (pkc->dsh != NULL)
1372 GNUNET_DATASTORE_disconnect (pkc->dsh, GNUNET_NO);
1373 cont (cont_cls, NULL, _("Internal error."));
1377 size = sizeof (struct KBlock) + pkc->slen + pkc->mdsize;
1379 pkc->cpy = GNUNET_malloc (size);
1380 pkc->cpy->purpose.size = htonl (sizeof (struct GNUNET_CRYPTO_RsaSignaturePurpose) +
1381 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded) +
1384 pkc->cpy->purpose.purpose = htonl(GNUNET_SIGNATURE_PURPOSE_FS_KBLOCK);
1385 pkc->ksk_uri = GNUNET_FS_uri_dup (ksk_uri);
1386 GNUNET_SCHEDULER_add_continuation (h->sched,
1389 GNUNET_SCHEDULER_REASON_PREREQ_DONE);
1394 * Context for the SKS publication.
1396 struct PublishSksContext
1400 * Global FS context.
1402 struct GNUNET_FS_Uri *uri;
1405 * Handle to the datastore.
1407 struct GNUNET_DATASTORE_Handle *dsh;
1410 * Function to call once we're done.
1412 GNUNET_FS_PublishContinuation cont;
1423 * Function called by the datastore API with
1424 * the result from the PUT (SBlock) request.
1426 * @param cls closure of type "struct PublishSksContext*"
1427 * @param success GNUNET_OK on success
1428 * @param msg error message (or NULL)
1431 sb_put_cont (void *cls,
1435 struct PublishSksContext *psc = cls;
1437 if (NULL != psc->dsh)
1438 GNUNET_DATASTORE_disconnect (psc->dsh, GNUNET_NO);
1439 if (GNUNET_OK != success)
1440 psc->cont (psc->cont_cls,
1444 psc->cont (psc->cont_cls,
1447 GNUNET_FS_uri_destroy (psc->uri);
1453 * Publish an SBlock on GNUnet.
1455 * @param h handle to the file sharing subsystem
1456 * @param namespace namespace to publish in
1457 * @param identifier identifier to use
1458 * @param update update identifier to use
1459 * @param meta metadata to use
1460 * @param uri URI to refer to in the SBlock
1461 * @param expirationTime when the SBlock expires
1462 * @param anonymity anonymity level for the SBlock
1463 * @param priority priority for the SBlock
1464 * @param options publication options
1465 * @param cont continuation
1466 * @param cont_cls closure for cont
1469 GNUNET_FS_publish_sks (struct GNUNET_FS_Handle *h,
1470 struct GNUNET_FS_Namespace *namespace,
1471 const char *identifier,
1473 const struct GNUNET_CONTAINER_MetaData *meta,
1474 const struct GNUNET_FS_Uri *uri,
1475 struct GNUNET_TIME_Absolute expirationTime,
1478 enum GNUNET_FS_PublishOptions options,
1479 GNUNET_FS_PublishContinuation cont,
1482 struct PublishSksContext *psc;
1483 struct GNUNET_CRYPTO_AesSessionKey sk;
1484 struct GNUNET_CRYPTO_AesInitializationVector iv;
1485 struct GNUNET_FS_Uri *sks_uri;
1493 struct SBlock *sb_enc;
1495 struct GNUNET_CONTAINER_MetaData *mmeta;
1496 GNUNET_HashCode key; /* hash of thisId = key */
1497 GNUNET_HashCode id; /* hash of hc = identifier */
1498 GNUNET_HashCode query; /* id ^ nsid = DB query */
1501 mmeta = GNUNET_CONTAINER_meta_data_create ();
1503 mmeta = GNUNET_CONTAINER_meta_data_duplicate (meta);
1504 uris = GNUNET_FS_uri_to_string (uri);
1505 slen = strlen (uris) + 1;
1506 idlen = strlen (identifier);
1509 nidlen = strlen (update) + 1;
1510 mdsize = GNUNET_CONTAINER_meta_data_get_serialized_size (mmeta);
1511 size = sizeof (struct SBlock) + slen + nidlen + mdsize;
1512 if (size > MAX_SBLOCK_SIZE)
1514 size = MAX_SBLOCK_SIZE;
1515 mdsize = size - (sizeof (struct SBlock) + slen + nidlen);
1517 sb = GNUNET_malloc (sizeof (struct SBlock) + size);
1518 dest = (char *) &sb[1];
1519 memcpy (dest, update, nidlen);
1521 memcpy (dest, uris, slen);
1523 mdsize = GNUNET_CONTAINER_meta_data_serialize (mmeta,
1526 GNUNET_CONTAINER_META_DATA_SERIALIZE_PART);
1527 GNUNET_CONTAINER_meta_data_destroy (mmeta);
1535 _("Internal error."));
1538 size = sizeof (struct SBlock) + mdsize + slen + nidlen;
1539 sb_enc = GNUNET_malloc (size);
1540 GNUNET_CRYPTO_hash (identifier, idlen, &key);
1541 GNUNET_CRYPTO_hash (&key, sizeof (GNUNET_HashCode), &id);
1542 sks_uri = GNUNET_malloc (sizeof (struct GNUNET_FS_Uri));
1543 sks_uri->type = sks;
1544 GNUNET_CRYPTO_rsa_key_get_public (namespace->key, &sb_enc->subspace);
1545 GNUNET_CRYPTO_hash (&sb_enc->subspace,
1546 sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
1547 &sks_uri->data.sks.namespace);
1548 sks_uri->data.sks.identifier = GNUNET_strdup (identifier);
1549 GNUNET_CRYPTO_hash_xor (&id,
1550 &sks_uri->data.sks.namespace,
1551 &sb_enc->identifier);
1552 GNUNET_CRYPTO_hash_to_aes_key (&key, &sk, &iv);
1553 GNUNET_CRYPTO_aes_encrypt (&sb[1],
1554 size - sizeof (struct SBlock),
1558 sb_enc->purpose.purpose = htonl (GNUNET_SIGNATURE_PURPOSE_FS_SBLOCK);
1559 sb_enc->purpose.size = htonl(slen + mdsize + nidlen
1560 + sizeof(struct SBlock)
1561 - sizeof(struct GNUNET_CRYPTO_RsaSignature));
1562 GNUNET_assert (GNUNET_OK ==
1563 GNUNET_CRYPTO_rsa_sign (namespace->key,
1565 &sb_enc->signature));
1566 psc = GNUNET_malloc (sizeof(struct PublishSksContext));
1569 psc->cont_cls = cont_cls;
1570 if (0 != (options & GNUNET_FS_PUBLISH_OPTION_SIMULATE_ONLY))
1572 GNUNET_free (sb_enc);
1579 psc->dsh = GNUNET_DATASTORE_connect (h->cfg, h->sched);
1580 if (NULL == psc->dsh)
1582 GNUNET_free (sb_enc);
1586 _("Failed to connect to datastore."));
1589 GNUNET_CRYPTO_hash_xor (&sks_uri->data.sks.namespace,
1592 GNUNET_DATASTORE_put (psc->dsh,
1594 &sb_enc->identifier,
1597 GNUNET_DATASTORE_BLOCKTYPE_SBLOCK,
1601 GNUNET_CONSTANTS_SERVICE_TIMEOUT,
1606 GNUNET_free (sb_enc);
1609 /* end of fs_publish.c */