12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012112212312412512612712812913013113213313413513613713813914014114214314414514614714814915015115215315415515615715815916016116216316416516616716816917017117217317417517617717817918018118218318418518618718818919019119219319419519619719819920020120220320420520620720820921021121221321421521621721821922022122222322422522622722822923023123223323423523623723823924024124224324424524624724824925025125225325425525625725825926026126226326426526626726826927027127227327427527627727827928028128228328428528628728828929029129229329429529629729829930030130230330430530630730830931031131231331431531631731831932032132232332432532632732832933033133233333433533633733833934034134234334434534634734834935035135235335435535635735835936036136236336436536636736836937037137237337437537637737837938038138238338438538638738838939039139239339439539639739839940040140240340440540640740840941041141241341441541641741841942042142242342442542642742842943043143243343443543643743843944044144244344444544644744844945045145245345445545645745845946046146246346446546646746846947047147247347447547647747847948048148248348448548648748848949049149249349449549649749849950050150250350450550650750850951051151251351451551651751851952052152252352452552652752852953053153253353453553653753853954054154254354454554654754854955055155255355455555655755855956056156256356456556656756856957057157257357457557657757857958058158258358458558658758858959059159259359459559659759859960060160260360460560660760860961061161261361461561661761861962062162262362462562662762862963063163263363463563663763863964064164264364464564664764864965065165265365465565665765865966066166266366466566666766866967067167267367467567667767867968068168268368468568668768868969069169269369469569669769869970070170270370470570670770870971071171271371471571671771871972072172272372472572672772872973073173273373473573673773873974074174274374474574674774874975075175275375475575675775875976076176276376476576676776876977077177277377477577677777877978078178278378478578678778878979079179279379479579679779879980080180280380480580680780880981081181281381481581681781881982082182282382482582682782882983083183283383483583683783883984084184284384484584684784884985085185285385485585685785885986086186286386486586686786886987087187287387487587687787887988088188288388488588688788888989089189289389489589689789889990090190290390490590690790890991091191291391491591691791891992092192292392492592692792892993093193293393493593693793893994094194294394494594694794894995095195295395495595695795895996096196296396496596696796896997097197297397497597697797897998098198298398498598698798898999099199299399499599699799899910001001100210031004100510061007100810091010101110121013101410151016101710181019102010211022102310241025102610271028102910301031103210331034103510361037103810391040104110421043104410451046104710481049105010511052105310541055105610571058105910601061106210631064106510661067106810691070107110721073107410751076107710781079108010811082108310841085108610871088108910901091109210931094109510961097109810991100110111021103110411051106110711081109111011111112111311141115111611171118111911201121112211231124112511261127112811291130113111321133113411351136113711381139114011411142114311441145114611471148114911501151115211531154115511561157115811591160116111621163116411651166116711681169117011711172117311741175117611771178117911801181118211831184118511861187118811891190119111921193119411951196119711981199120012011202120312041205120612071208120912101211121212131214121512161217121812191220122112221223122412251226122712281229123012311232123312341235123612371238123912401241124212431244124512461247124812491250125112521253125412551256125712581259126012611262126312641265126612671268126912701271127212731274127512761277127812791280128112821283128412851286128712881289129012911292129312941295129612971298129913001301130213031304130513061307130813091310131113121313131413151316131713181319132013211322132313241325132613271328132913301331133213331334133513361337133813391340134113421343134413451346134713481349135013511352135313541355135613571358135913601361136213631364136513661367136813691370137113721373137413751376137713781379138013811382138313841385138613871388138913901391139213931394139513961397139813991400140114021403140414051406140714081409141014111412141314141415141614171418141914201421142214231424142514261427142814291430143114321433143414351436143714381439144014411442144314441445144614471448144914501451145214531454145514561457145814591460146114621463146414651466146714681469147014711472147314741475147614771478147914801481148214831484148514861487148814891490149114921493149414951496149714981499150015011502150315041505150615071508150915101511151215131514151515161517151815191520152115221523152415251526152715281529153015311532153315341535153615371538153915401541154215431544154515461547154815491550155115521553155415551556155715581559156015611562156315641565156615671568156915701571157215731574157515761577157815791580158115821583158415851586158715881589159015911592159315941595159615971598159916001601160216031604160516061607160816091610161116121613161416151616161716181619162016211622162316241625162616271628162916301631163216331634163516361637163816391640164116421643164416451646164716481649165016511652165316541655165616571658165916601661166216631664166516661667166816691670167116721673167416751676167716781679168016811682168316841685168616871688168916901691169216931694169516961697169816991700170117021703170417051706170717081709171017111712171317141715171617171718171917201721 |
- /*
- This file is part of GNUnet.
- (C) 2009, 2010 Christian Grothoff (and other contributing authors)
- GNUnet is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 3, or (at your
- option) any later version.
- GNUnet is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
- */
- /**
- * @file fs/fs_publish.c
- * @brief publish a file or directory in GNUnet
- * @see https://gnunet.org/encoding
- * @author Krista Bennett
- * @author Christian Grothoff
- */
- #include "platform.h"
- #include "gnunet_constants.h"
- #include "gnunet_signatures.h"
- #include "gnunet_util_lib.h"
- #include "gnunet_fs_service.h"
- #include "fs.h"
- #include "fs_tree.h"
- #define DEBUG_PUBLISH GNUNET_NO
- /**
- * Fill in all of the generic fields for
- * a publish event and call the callback.
- *
- * @param pi structure to fill in
- * @param pc overall publishing context
- * @param p file information for the file being published
- * @param offset where in the file are we so far
- * @return value returned from callback
- */
- void *
- GNUNET_FS_publish_make_status_ (struct GNUNET_FS_ProgressInfo *pi,
- struct GNUNET_FS_PublishContext *pc,
- const struct GNUNET_FS_FileInformation *p,
- uint64_t offset)
- {
- pi->value.publish.pc = pc;
- pi->value.publish.fi = p;
- pi->value.publish.cctx
- = p->client_info;
- pi->value.publish.pctx
- = (NULL == p->dir) ? NULL : p->dir->client_info;
- pi->value.publish.filename = p->filename;
- pi->value.publish.size
- = (p->is_directory) ? p->data.dir.dir_size : p->data.file.file_size;
- pi->value.publish.eta
- = GNUNET_TIME_calculate_eta (p->start_time,
- offset,
- pi->value.publish.size);
- pi->value.publish.completed = offset;
- pi->value.publish.duration = GNUNET_TIME_absolute_get_duration (p->start_time);
- pi->value.publish.anonymity = p->bo.anonymity_level;
- return pc->h->upcb (pc->h->upcb_cls,
- pi);
- }
- /**
- * Cleanup the publish context, we're done with it.
- *
- * @param cls struct to clean up after
- * @param tc scheduler context
- */
- static void
- publish_cleanup (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
- {
- struct GNUNET_FS_PublishContext *pc = cls;
- #if DEBUG_PUBLISH
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Cleaning up publish context (done!)\n");
- #endif
- if (pc->fhc != NULL)
- {
- GNUNET_CRYPTO_hash_file_cancel (pc->fhc);
- pc->fhc = NULL;
- }
- GNUNET_FS_file_information_destroy (pc->fi, NULL, NULL);
- if (pc->namespace != NULL)
- {
- GNUNET_FS_namespace_delete (pc->namespace, GNUNET_NO);
- pc->namespace = NULL;
- }
- GNUNET_free_non_null (pc->nid);
- GNUNET_free_non_null (pc->nuid);
- GNUNET_free_non_null (pc->serialization);
- if (pc->dsh != NULL)
- {
- GNUNET_DATASTORE_disconnect (pc->dsh, GNUNET_NO);
- pc->dsh = NULL;
- }
- if (pc->client != NULL)
- {
- GNUNET_CLIENT_disconnect (pc->client, GNUNET_NO);
- pc->client = NULL;
- }
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == pc->upload_task);
- GNUNET_free (pc);
- }
- /**
- * Function called by the datastore API with
- * the result from the PUT request.
- *
- * @param cls the 'struct GNUNET_FS_PublishContext'
- * @param success GNUNET_OK on success
- * @param msg error message (or NULL)
- */
- static void
- ds_put_cont (void *cls,
- int success,
- const char *msg)
- {
- struct GNUNET_FS_PublishContext *pc = cls;
- struct GNUNET_FS_ProgressInfo pi;
- pc->qre = NULL;
- if (GNUNET_SYSERR == pc->in_network_wait)
- {
- /* we were aborted in the meantime, finish shutdown! */
- GNUNET_SCHEDULER_add_continuation (&publish_cleanup,
- pc,
- GNUNET_SCHEDULER_REASON_PREREQ_DONE);
- return;
- }
- GNUNET_assert (GNUNET_YES == pc->in_network_wait);
- pc->in_network_wait = GNUNET_NO;
- if (GNUNET_SYSERR == success)
- {
- GNUNET_asprintf (&pc->fi_pos->emsg,
- _("Publishing failed: %s"),
- msg);
- pi.status = GNUNET_FS_STATUS_PUBLISH_ERROR;
- pi.value.publish.eta = GNUNET_TIME_UNIT_FOREVER_REL;
- pi.value.publish.specifics.error.message = pc->fi_pos->emsg;
- pc->fi_pos->client_info = GNUNET_FS_publish_make_status_ (&pi, pc, pc->fi_pos, 0);
- if ( (pc->fi_pos->is_directory == GNUNET_NO) &&
- (pc->fi_pos->filename != NULL) &&
- (pc->fi_pos->data.file.do_index == GNUNET_YES) )
- {
- /* run unindex to clean up */
- GNUNET_FS_unindex_start (pc->h,
- pc->fi_pos->filename,
- NULL);
- }
- }
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == pc->upload_task);
- pc->upload_task
- = GNUNET_SCHEDULER_add_with_priority (GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
- &GNUNET_FS_publish_main_,
- pc);
- }
- /**
- * Generate the callback that signals clients
- * that a file (or directory) has been completely
- * published.
- *
- * @param p the completed upload
- * @param pc context of the publication
- */
- static void
- signal_publish_completion (struct GNUNET_FS_FileInformation *p,
- struct GNUNET_FS_PublishContext *pc)
- {
- struct GNUNET_FS_ProgressInfo pi;
-
- pi.status = GNUNET_FS_STATUS_PUBLISH_COMPLETED;
- pi.value.publish.eta = GNUNET_TIME_UNIT_ZERO;
- pi.value.publish.specifics.completed.chk_uri = p->chk_uri;
- p->client_info = GNUNET_FS_publish_make_status_ (&pi, pc, p,
- GNUNET_ntohll (p->chk_uri->data.chk.file_length));
- }
- /**
- * Generate the callback that signals clients
- * that a file (or directory) has encountered
- * a problem during publication.
- *
- * @param p the upload that had trouble
- * @param pc context of the publication
- * @param emsg error message
- */
- static void
- signal_publish_error (struct GNUNET_FS_FileInformation *p,
- struct GNUNET_FS_PublishContext *pc,
- const char *emsg)
- {
- struct GNUNET_FS_ProgressInfo pi;
-
- p->emsg = GNUNET_strdup (emsg);
- pi.status = GNUNET_FS_STATUS_PUBLISH_ERROR;
- pi.value.publish.eta = GNUNET_TIME_UNIT_FOREVER_REL;
- pi.value.publish.specifics.error.message =emsg;
- p->client_info = GNUNET_FS_publish_make_status_ (&pi, pc, p, 0);
- if ( (p->is_directory == GNUNET_NO) &&
- (p->filename != NULL) &&
- (p->data.file.do_index == GNUNET_YES) )
- {
- /* run unindex to clean up */
- GNUNET_FS_unindex_start (pc->h,
- p->filename,
- NULL);
- }
-
- }
- /**
- * Datastore returns from reservation cancel request.
- *
- * @param cls the 'struct GNUNET_FS_PublishContext'
- * @param success success code (not used)
- * @param msg error message (typically NULL, not used)
- */
- static void
- finish_release_reserve (void *cls,
- int success,
- const char *msg)
- {
- struct GNUNET_FS_PublishContext *pc = cls;
- pc->qre = NULL;
- #if DEBUG_PUBLISH
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Releasing reserve done!\n");
- #endif
- signal_publish_completion (pc->fi, pc);
- pc->all_done = GNUNET_YES;
- GNUNET_FS_publish_sync_ (pc);
- }
- /**
- * We've finished publishing the SBlock as part of a larger upload.
- * Check the result and complete the larger upload.
- *
- * @param cls the "struct GNUNET_FS_PublishContext*" of the larger upload
- * @param uri URI of the published SBlock
- * @param emsg NULL on success, otherwise error message
- */
- static void
- publish_sblocks_cont (void *cls,
- const struct GNUNET_FS_Uri *uri,
- const char *emsg)
- {
- struct GNUNET_FS_PublishContext *pc = cls;
- if (NULL != emsg)
- {
- signal_publish_error (pc->fi,
- pc,
- emsg);
- GNUNET_FS_publish_sync_ (pc);
- return;
- }
- GNUNET_assert (pc->qre == NULL);
- if ( (pc->dsh != NULL) &&
- (pc->rid != 0) )
- {
- pc->qre = GNUNET_DATASTORE_release_reserve (pc->dsh,
- pc->rid,
- UINT_MAX,
- UINT_MAX,
- GNUNET_TIME_UNIT_FOREVER_REL,
- &finish_release_reserve,
- pc);
- }
- else
- {
- finish_release_reserve (pc, GNUNET_OK, NULL);
- }
- }
- /**
- * We are almost done publishing the structure,
- * add SBlocks (if needed).
- *
- * @param pc overall upload data
- */
- static void
- publish_sblock (struct GNUNET_FS_PublishContext *pc)
- {
- if (NULL != pc->namespace)
- GNUNET_FS_publish_sks (pc->h,
- pc->namespace,
- pc->nid,
- pc->nuid,
- pc->fi->meta,
- pc->fi->chk_uri,
- &pc->fi->bo,
- pc->options,
- &publish_sblocks_cont,
- pc);
- else
- publish_sblocks_cont (pc, NULL, NULL);
- }
- /**
- * We've finished publishing a KBlock as part of a larger upload.
- * Check the result and continue the larger upload.
- *
- * @param cls the "struct GNUNET_FS_PublishContext*"
- * of the larger upload
- * @param uri URI of the published blocks
- * @param emsg NULL on success, otherwise error message
- */
- static void
- publish_kblocks_cont (void *cls,
- const struct GNUNET_FS_Uri *uri,
- const char *emsg)
- {
- struct GNUNET_FS_PublishContext *pc = cls;
- struct GNUNET_FS_FileInformation *p = pc->fi_pos;
- if (NULL != emsg)
- {
- #if DEBUG_PUBLISH
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Error uploading KSK blocks: %s\n",
- emsg);
- #endif
- signal_publish_error (p, pc, emsg);
- GNUNET_FS_file_information_sync_ (p);
- GNUNET_FS_publish_sync_ (pc);
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == pc->upload_task);
- pc->upload_task
- = GNUNET_SCHEDULER_add_with_priority (GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
- &GNUNET_FS_publish_main_,
- pc);
- return;
- }
- #if DEBUG_PUBLISH
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "KSK blocks published, moving on to next file\n");
- #endif
- if (NULL != p->dir)
- signal_publish_completion (p, pc);
- /* move on to next file */
- if (NULL != p->next)
- pc->fi_pos = p->next;
- else
- pc->fi_pos = p->dir;
- GNUNET_FS_publish_sync_ (pc);
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == pc->upload_task);
- pc->upload_task
- = GNUNET_SCHEDULER_add_with_priority (GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
- &GNUNET_FS_publish_main_,
- pc);
- }
- /**
- * Function called by the tree encoder to obtain
- * a block of plaintext data (for the lowest level
- * of the tree).
- *
- * @param cls our publishing context
- * @param offset identifies which block to get
- * @param max (maximum) number of bytes to get; returning
- * fewer will also cause errors
- * @param buf where to copy the plaintext buffer
- * @param emsg location to store an error message (on error)
- * @return number of bytes copied to buf, 0 on error
- */
- static size_t
- block_reader (void *cls,
- uint64_t offset,
- size_t max,
- void *buf,
- char **emsg)
- {
- struct GNUNET_FS_PublishContext *pc = cls;
- struct GNUNET_FS_FileInformation *p;
- size_t pt_size;
- const char *dd;
- p = pc->fi_pos;
- if (p->is_directory)
- {
- pt_size = GNUNET_MIN(max,
- p->data.dir.dir_size - offset);
- dd = p->data.dir.dir_data;
- memcpy (buf,
- &dd[offset],
- pt_size);
- }
- else
- {
- pt_size = GNUNET_MIN(max,
- p->data.file.file_size - offset);
- if (pt_size == 0)
- return 0; /* calling reader with pt_size==0
- might free buf, so don't! */
- if (pt_size !=
- p->data.file.reader (p->data.file.reader_cls,
- offset,
- pt_size,
- buf,
- emsg))
- return 0;
- }
- return pt_size;
- }
- /**
- * The tree encoder has finished processing a
- * file. Call it's finish method and deal with
- * the final result.
- *
- * @param cls our publishing context
- * @param tc scheduler's task context (not used)
- */
- static void
- encode_cont (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
- {
- struct GNUNET_FS_PublishContext *pc = cls;
- struct GNUNET_FS_FileInformation *p;
- struct GNUNET_FS_ProgressInfo pi;
- char *emsg;
- uint64_t flen;
- p = pc->fi_pos;
- GNUNET_FS_tree_encoder_finish (p->te,
- &p->chk_uri,
- &emsg);
- p->te = NULL;
- if (NULL != emsg)
- {
- #if DEBUG_PUBLISH
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Error during tree walk: %s\n",
- emsg);
- #endif
- GNUNET_asprintf (&p->emsg,
- _("Publishing failed: %s"),
- emsg);
- GNUNET_free (emsg);
- pi.status = GNUNET_FS_STATUS_PUBLISH_ERROR;
- pi.value.publish.eta = GNUNET_TIME_UNIT_FOREVER_REL;
- pi.value.publish.specifics.error.message = p->emsg;
- p->client_info = GNUNET_FS_publish_make_status_ (&pi, pc, p, 0);
- }
- #if DEBUG_PUBLISH
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Finished with tree encoder\n");
- #endif
- /* final progress event */
- flen = GNUNET_FS_uri_chk_get_file_size (p->chk_uri);
- pi.status = GNUNET_FS_STATUS_PUBLISH_PROGRESS;
- pi.value.publish.specifics.progress.data = NULL;
- pi.value.publish.specifics.progress.offset = flen;
- pi.value.publish.specifics.progress.data_len = 0;
- pi.value.publish.specifics.progress.depth = GNUNET_FS_compute_depth (flen);
- p->client_info = GNUNET_FS_publish_make_status_ (&pi, pc, p, flen);
- /* continue with main */
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == pc->upload_task);
- pc->upload_task
- = GNUNET_SCHEDULER_add_with_priority (GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
- &GNUNET_FS_publish_main_,
- pc);
- }
- /**
- * Function called asking for the current (encoded)
- * block to be processed. After processing the
- * client should either call "GNUNET_FS_tree_encode_next"
- * or (on error) "GNUNET_FS_tree_encode_finish".
- *
- * @param cls closure
- * @param chk content hash key for the block
- * @param offset offset of the block in the file
- * @param depth depth of the block in the file, 0 for DBLOCK
- * @param type type of the block (IBLOCK or DBLOCK)
- * @param block the (encrypted) block
- * @param block_size size of block (in bytes)
- */
- static void
- block_proc (void *cls,
- const struct ContentHashKey *chk,
- uint64_t offset,
- unsigned int depth,
- enum GNUNET_BLOCK_Type type,
- const void *block,
- uint16_t block_size)
- {
- struct GNUNET_FS_PublishContext *pc = cls;
- struct GNUNET_FS_FileInformation *p;
- struct OnDemandBlock odb;
- p = pc->fi_pos;
- if (NULL == pc->dsh)
- {
- #if DEBUG_PUBLISH
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Waiting for datastore connection\n");
- #endif
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == pc->upload_task);
- pc->upload_task
- = GNUNET_SCHEDULER_add_with_priority (GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
- &GNUNET_FS_publish_main_,
- pc);
- return;
- }
-
- GNUNET_assert (GNUNET_NO == pc->in_network_wait);
- pc->in_network_wait = GNUNET_YES;
- if ( (! p->is_directory) &&
- (GNUNET_YES == p->data.file.do_index) &&
- (type == GNUNET_BLOCK_TYPE_FS_DBLOCK) )
- {
- #if DEBUG_PUBLISH
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Indexing block `%s' for offset %llu with index size %u\n",
- GNUNET_h2s (&chk->query),
- (unsigned long long) offset,
- sizeof (struct OnDemandBlock));
- #endif
- odb.offset = GNUNET_htonll (offset);
- odb.file_id = p->data.file.file_id;
- GNUNET_assert (pc->qre == NULL);
- pc->qre = GNUNET_DATASTORE_put (pc->dsh,
- (p->is_directory) ? 0 : pc->rid,
- &chk->query,
- sizeof (struct OnDemandBlock),
- &odb,
- GNUNET_BLOCK_TYPE_FS_ONDEMAND,
- p->bo.content_priority,
- p->bo.anonymity_level,
- p->bo.replication_level,
- p->bo.expiration_time,
- -2, 1,
- GNUNET_CONSTANTS_SERVICE_TIMEOUT,
- &ds_put_cont,
- pc);
- return;
- }
- #if DEBUG_PUBLISH
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Publishing block `%s' for offset %llu with size %u\n",
- GNUNET_h2s (&chk->query),
- (unsigned long long) offset,
- (unsigned int) block_size);
- #endif
- GNUNET_assert (pc->qre == NULL);
- pc->qre = GNUNET_DATASTORE_put (pc->dsh,
- (p->is_directory) ? 0 : pc->rid,
- &chk->query,
- block_size,
- block,
- type,
- p->bo.content_priority,
- p->bo.anonymity_level,
- p->bo.replication_level,
- p->bo.expiration_time,
- -2, 1,
- GNUNET_CONSTANTS_SERVICE_TIMEOUT,
- &ds_put_cont,
- pc);
- }
- /**
- * Function called with information about our
- * progress in computing the tree encoding.
- *
- * @param cls closure
- * @param offset where are we in the file
- * @param pt_block plaintext of the currently processed block
- * @param pt_size size of pt_block
- * @param depth depth of the block in the tree, 0 for DBLOCK
- */
- static void
- progress_proc (void *cls,
- uint64_t offset,
- const void *pt_block,
- size_t pt_size,
- unsigned int depth)
- {
- struct GNUNET_FS_PublishContext *pc = cls;
- struct GNUNET_FS_FileInformation *p;
- struct GNUNET_FS_ProgressInfo pi;
- p = pc->fi_pos;
- pi.status = GNUNET_FS_STATUS_PUBLISH_PROGRESS;
- pi.value.publish.specifics.progress.data = pt_block;
- pi.value.publish.specifics.progress.offset = offset;
- pi.value.publish.specifics.progress.data_len = pt_size;
- pi.value.publish.specifics.progress.depth = depth;
- p->client_info = GNUNET_FS_publish_make_status_ (&pi, pc, p, offset);
- }
- /**
- * We are uploading a file or directory; load (if necessary) the next
- * block into memory, encrypt it and send it to the FS service. Then
- * continue with the main task.
- *
- * @param pc overall upload data
- */
- static void
- publish_content (struct GNUNET_FS_PublishContext *pc)
- {
- struct GNUNET_FS_FileInformation *p;
- char *emsg;
- struct GNUNET_FS_DirectoryBuilder *db;
- struct GNUNET_FS_FileInformation *dirpos;
- void *raw_data;
- uint64_t size;
- p = pc->fi_pos;
- GNUNET_assert (p != NULL);
- if (NULL == p->te)
- {
- if (p->is_directory)
- {
- #if DEBUG_PUBLISH
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Creating directory\n");
- #endif
- db = GNUNET_FS_directory_builder_create (p->meta);
- dirpos = p->data.dir.entries;
- while (NULL != dirpos)
- {
- if (dirpos->is_directory)
- {
- raw_data = dirpos->data.dir.dir_data;
- dirpos->data.dir.dir_data = NULL;
- }
- else
- {
- raw_data = NULL;
- if ( (dirpos->data.file.file_size < MAX_INLINE_SIZE) &&
- (dirpos->data.file.file_size > 0) )
- {
- raw_data = GNUNET_malloc (dirpos->data.file.file_size);
- emsg = NULL;
- if (dirpos->data.file.file_size !=
- dirpos->data.file.reader (dirpos->data.file.reader_cls,
- 0,
- dirpos->data.file.file_size,
- raw_data,
- &emsg))
- {
- GNUNET_free_non_null (emsg);
- GNUNET_free (raw_data);
- raw_data = NULL;
- }
- }
- }
- GNUNET_FS_directory_builder_add (db,
- dirpos->chk_uri,
- dirpos->meta,
- raw_data);
- GNUNET_free_non_null (raw_data);
- dirpos = dirpos->next;
- }
- GNUNET_free_non_null (p->data.dir.dir_data);
- p->data.dir.dir_data = NULL;
- p->data.dir.dir_size = 0;
- GNUNET_FS_directory_builder_finish (db,
- &p->data.dir.dir_size,
- &p->data.dir.dir_data);
- GNUNET_FS_file_information_sync_ (p);
- }
- size = (p->is_directory)
- ? p->data.dir.dir_size
- : p->data.file.file_size;
- #if DEBUG_PUBLISH
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Creating tree encoder\n");
- #endif
- p->te = GNUNET_FS_tree_encoder_create (pc->h,
- size,
- pc,
- &block_reader,
- &block_proc,
- &progress_proc,
- &encode_cont);
- }
- #if DEBUG_PUBLISH
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Processing next block from tree\n");
- #endif
- GNUNET_FS_tree_encoder_next (p->te);
- }
- /**
- * Process the response (or lack thereof) from
- * the "fs" service to our 'start index' request.
- *
- * @param cls closure (of type "struct GNUNET_FS_PublishContext*"_)
- * @param msg the response we got
- */
- static void
- process_index_start_response (void *cls,
- const struct GNUNET_MessageHeader *msg)
- {
- struct GNUNET_FS_PublishContext *pc = cls;
- struct GNUNET_FS_FileInformation *p;
- const char *emsg;
- uint16_t msize;
- GNUNET_CLIENT_disconnect (pc->client, GNUNET_NO);
- pc->client = NULL;
- p = pc->fi_pos;
- if (msg == NULL)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- _("Can not index file `%s': %s. Will try to insert instead.\n"),
- p->filename,
- _("timeout on index-start request to `fs' service"));
- p->data.file.do_index = GNUNET_NO;
- GNUNET_FS_file_information_sync_ (p);
- publish_content (pc);
- return;
- }
- if (ntohs (msg->type) != GNUNET_MESSAGE_TYPE_FS_INDEX_START_OK)
- {
- msize = ntohs (msg->size);
- emsg = (const char *) &msg[1];
- if ( (msize <= sizeof (struct GNUNET_MessageHeader)) ||
- (emsg[msize - sizeof(struct GNUNET_MessageHeader) - 1] != '\0') )
- emsg = gettext_noop ("unknown error");
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- _("Can not index file `%s': %s. Will try to insert instead.\n"),
- p->filename,
- gettext (emsg));
- p->data.file.do_index = GNUNET_NO;
- GNUNET_FS_file_information_sync_ (p);
- publish_content (pc);
- return;
- }
- p->data.file.index_start_confirmed = GNUNET_YES;
- /* success! continue with indexing */
- GNUNET_FS_file_information_sync_ (p);
- publish_content (pc);
- }
- /**
- * Function called once the hash computation over an
- * indexed file has completed.
- *
- * @param cls closure, our publishing context
- * @param res resulting hash, NULL on error
- */
- static void
- hash_for_index_cb (void *cls,
- const GNUNET_HashCode *
- res)
- {
- struct GNUNET_FS_PublishContext *pc = cls;
- struct GNUNET_FS_FileInformation *p;
- struct IndexStartMessage *ism;
- size_t slen;
- struct GNUNET_CLIENT_Connection *client;
- uint64_t dev;
- uint64_t ino;
- char *fn;
- pc->fhc = NULL;
- p = pc->fi_pos;
- if (NULL == res)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- _("Can not index file `%s': %s. Will try to insert instead.\n"),
- p->filename,
- _("failed to compute hash"));
- p->data.file.do_index = GNUNET_NO;
- GNUNET_FS_file_information_sync_ (p);
- publish_content (pc);
- return;
- }
- if (GNUNET_YES == p->data.file.index_start_confirmed)
- {
- publish_content (pc);
- return;
- }
- fn = GNUNET_STRINGS_filename_expand (p->filename);
- GNUNET_assert (fn != NULL);
- slen = strlen (fn) + 1;
- if (slen >= GNUNET_SERVER_MAX_MESSAGE_SIZE - sizeof(struct IndexStartMessage))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- _("Can not index file `%s': %s. Will try to insert instead.\n"),
- fn,
- _("filename too long"));
- GNUNET_free (fn);
- p->data.file.do_index = GNUNET_NO;
- GNUNET_FS_file_information_sync_ (p);
- publish_content (pc);
- return;
- }
- #if DEBUG_PUBLISH
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Hash of indexed file `%s' is `%s'\n",
- p->filename,
- GNUNET_h2s (res));
- #endif
- if (0 != (pc->options & GNUNET_FS_PUBLISH_OPTION_SIMULATE_ONLY))
- {
- p->data.file.file_id = *res;
- p->data.file.have_hash = GNUNET_YES;
- p->data.file.index_start_confirmed = GNUNET_YES;
- GNUNET_FS_file_information_sync_ (p);
- publish_content (pc);
- GNUNET_free (fn);
- return;
- }
- client = GNUNET_CLIENT_connect ("fs",
- pc->h->cfg);
- if (NULL == client)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- _("Can not index file `%s': %s. Will try to insert instead.\n"),
- p->filename,
- _("could not connect to `fs' service"));
- p->data.file.do_index = GNUNET_NO;
- publish_content (pc);
- GNUNET_free (fn);
- return;
- }
- if (p->data.file.have_hash != GNUNET_YES)
- {
- p->data.file.file_id = *res;
- p->data.file.have_hash = GNUNET_YES;
- GNUNET_FS_file_information_sync_ (p);
- }
- ism = GNUNET_malloc (sizeof(struct IndexStartMessage) +
- slen);
- ism->header.size = htons(sizeof(struct IndexStartMessage) +
- slen);
- ism->header.type = htons(GNUNET_MESSAGE_TYPE_FS_INDEX_START);
- if (GNUNET_OK ==
- GNUNET_DISK_file_get_identifiers (p->filename,
- &dev,
- &ino))
- {
- ism->device = GNUNET_htonll (dev);
- ism->inode = GNUNET_htonll(ino);
- }
- #if DEBUG_PUBLISH
- else
- {
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- _("Failed to get file identifiers for `%s'\n"),
- p->filename);
- }
- #endif
- ism->file_id = *res;
- memcpy (&ism[1],
- fn,
- slen);
- GNUNET_free (fn);
- pc->client = client;
- GNUNET_break (GNUNET_YES ==
- GNUNET_CLIENT_transmit_and_get_response (client,
- &ism->header,
- GNUNET_TIME_UNIT_FOREVER_REL,
- GNUNET_YES,
- &process_index_start_response,
- pc));
- GNUNET_free (ism);
- }
- /**
- * Main function that performs the upload.
- *
- * @param cls "struct GNUNET_FS_PublishContext" identifies the upload
- * @param tc task context
- */
- void
- GNUNET_FS_publish_main_ (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
- {
- struct GNUNET_FS_PublishContext *pc = cls;
- struct GNUNET_FS_ProgressInfo pi;
- struct GNUNET_FS_FileInformation *p;
- struct GNUNET_FS_Uri *loc;
- char *fn;
- pc->upload_task = GNUNET_SCHEDULER_NO_TASK;
- p = pc->fi_pos;
- if (NULL == p)
- {
- #if DEBUG_PUBLISH
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Publishing complete, now publishing SKS and KSK blocks.\n");
- #endif
- /* upload of entire hierarchy complete,
- publish namespace entries */
- GNUNET_FS_publish_sync_ (pc);
- publish_sblock (pc);
- return;
- }
- /* find starting position */
- while ( (p->is_directory) &&
- (NULL != p->data.dir.entries) &&
- (NULL == p->emsg) &&
- (NULL == p->data.dir.entries->chk_uri) )
- {
- p = p->data.dir.entries;
- pc->fi_pos = p;
- GNUNET_FS_publish_sync_ (pc);
- }
- /* abort on error */
- if (NULL != p->emsg)
- {
- #if DEBUG_PUBLISH
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Error uploading: %s\n",
- p->emsg);
- #endif
- /* error with current file, abort all
- related files as well! */
- while (NULL != p->dir)
- {
- fn = GNUNET_CONTAINER_meta_data_get_by_type (p->meta,
- EXTRACTOR_METATYPE_GNUNET_ORIGINAL_FILENAME);
- p = p->dir;
- if (fn != NULL)
- {
- GNUNET_asprintf (&p->emsg,
- _("Recursive upload failed at `%s': %s"),
- fn,
- p->emsg);
- GNUNET_free (fn);
- }
- else
- {
- GNUNET_asprintf (&p->emsg,
- _("Recursive upload failed: %s"),
- p->emsg);
- }
- pi.status = GNUNET_FS_STATUS_PUBLISH_ERROR;
- pi.value.publish.eta = GNUNET_TIME_UNIT_FOREVER_REL;
- pi.value.publish.specifics.error.message = p->emsg;
- p->client_info = GNUNET_FS_publish_make_status_ (&pi, pc, p, 0);
- }
- pc->all_done = GNUNET_YES;
- GNUNET_FS_publish_sync_ (pc);
- return;
- }
- /* handle completion */
- if (NULL != p->chk_uri)
- {
- #if DEBUG_PUBLISH
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "File upload complete, now publishing KSK blocks.\n");
- #endif
- if (0 == p->bo.anonymity_level)
- {
- /* zero anonymity, box CHK URI in LOC URI */
- loc = GNUNET_FS_uri_loc_create (p->chk_uri,
- pc->h->cfg,
- p->bo.expiration_time);
- GNUNET_FS_uri_destroy (p->chk_uri);
- p->chk_uri = loc;
- }
- GNUNET_FS_publish_sync_ (pc);
- /* upload of "p" complete, publish KBlocks! */
- if (p->keywords != NULL)
- {
- GNUNET_FS_publish_ksk (pc->h,
- p->keywords,
- p->meta,
- p->chk_uri,
- &p->bo,
- pc->options,
- &publish_kblocks_cont,
- pc);
- }
- else
- {
- publish_kblocks_cont (pc,
- p->chk_uri,
- NULL);
- }
- return;
- }
- if ( (!p->is_directory) &&
- (p->data.file.do_index) )
- {
- if (NULL == p->filename)
- {
- p->data.file.do_index = GNUNET_NO;
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- _("Can not index file `%s': %s. Will try to insert instead.\n"),
- "<no-name>",
- _("needs to be an actual file"));
- GNUNET_FS_file_information_sync_ (p);
- publish_content (pc);
- return;
- }
- if (p->data.file.have_hash)
- {
- hash_for_index_cb (pc,
- &p->data.file.file_id);
- }
- else
- {
- p->start_time = GNUNET_TIME_absolute_get ();
- pc->fhc = GNUNET_CRYPTO_hash_file (GNUNET_SCHEDULER_PRIORITY_IDLE,
- p->filename,
- HASHING_BLOCKSIZE,
- &hash_for_index_cb,
- pc);
- }
- return;
- }
- publish_content (pc);
- }
- /**
- * Signal the FS's progress function that we are starting
- * an upload.
- *
- * @param cls closure (of type "struct GNUNET_FS_PublishContext*")
- * @param fi the entry in the publish-structure
- * @param length length of the file or directory
- * @param meta metadata for the file or directory (can be modified)
- * @param uri pointer to the keywords that will be used for this entry (can be modified)
- * @param bo block options
- * @param do_index should we index?
- * @param client_info pointer to client context set upon creation (can be modified)
- * @return GNUNET_OK to continue (always)
- */
- static int
- fip_signal_start(void *cls,
- struct GNUNET_FS_FileInformation *fi,
- uint64_t length,
- struct GNUNET_CONTAINER_MetaData *meta,
- struct GNUNET_FS_Uri **uri,
- struct GNUNET_FS_BlockOptions *bo,
- int *do_index,
- void **client_info)
- {
- struct GNUNET_FS_PublishContext *pc = cls;
- struct GNUNET_FS_ProgressInfo pi;
- unsigned int kc;
- uint64_t left;
- #if DEBUG_PUBLISH
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Starting publish operation\n");
- #endif
- if (*do_index)
- {
- /* space for on-demand blocks */
- pc->reserve_space += ((length + DBLOCK_SIZE - 1) / DBLOCK_SIZE) * sizeof (struct OnDemandBlock);
- }
- else
- {
- /* space for DBlocks */
- pc->reserve_space += length;
- }
- /* entries for IBlocks and DBlocks, space for IBlocks */
- left = length;
- while (1)
- {
- left = (left + DBLOCK_SIZE - 1) / DBLOCK_SIZE;
- pc->reserve_entries += left;
- if (left <= 1)
- break;
- left = left * sizeof (struct ContentHashKey);
- pc->reserve_space += left;
- }
- pc->reserve_entries++;
- /* entries and space for keywords */
- if (NULL != *uri)
- {
- kc = GNUNET_FS_uri_ksk_get_keyword_count (*uri);
- pc->reserve_entries += kc;
- pc->reserve_space += GNUNET_SERVER_MAX_MESSAGE_SIZE * kc;
- }
- pi.status = GNUNET_FS_STATUS_PUBLISH_START;
- *client_info = GNUNET_FS_publish_make_status_ (&pi, pc, fi, 0);
- GNUNET_FS_file_information_sync_ (fi);
- return GNUNET_OK;
- }
- /**
- * Signal the FS's progress function that we are suspending
- * an upload.
- *
- * @param cls closure (of type "struct GNUNET_FS_PublishContext*")
- * @param fi the entry in the publish-structure
- * @param length length of the file or directory
- * @param meta metadata for the file or directory (can be modified)
- * @param uri pointer to the keywords that will be used for this entry (can be modified)
- * @param bo block options
- * @param do_index should we index?
- * @param client_info pointer to client context set upon creation (can be modified)
- * @return GNUNET_OK to continue (always)
- */
- static int
- fip_signal_suspend(void *cls,
- struct GNUNET_FS_FileInformation *fi,
- uint64_t length,
- struct GNUNET_CONTAINER_MetaData *meta,
- struct GNUNET_FS_Uri **uri,
- struct GNUNET_FS_BlockOptions *bo,
- int *do_index,
- void **client_info)
- {
- struct GNUNET_FS_PublishContext*pc = cls;
- struct GNUNET_FS_ProgressInfo pi;
- uint64_t off;
- #if DEBUG_PUBLISH
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Suspending publish operation\n");
- #endif
- GNUNET_free_non_null (fi->serialization);
- fi->serialization = NULL;
- off = (fi->chk_uri == NULL) ? 0 : length;
- pi.status = GNUNET_FS_STATUS_PUBLISH_SUSPEND;
- GNUNET_break (NULL == GNUNET_FS_publish_make_status_ (&pi, pc, fi, off));
- *client_info = NULL;
- if (NULL != pc->qre)
- {
- GNUNET_DATASTORE_cancel (pc->qre);
- pc->qre = NULL;
- }
- if (NULL != pc->dsh)
- {
- GNUNET_DATASTORE_disconnect (pc->dsh, GNUNET_NO);
- pc->dsh = NULL;
- }
- pc->rid = 0;
- return GNUNET_OK;
- }
- /**
- * Create SUSPEND event for the given publish operation
- * and then clean up our state (without stop signal).
- *
- * @param cls the 'struct GNUNET_FS_PublishContext' to signal for
- */
- void
- GNUNET_FS_publish_signal_suspend_ (void *cls)
- {
- struct GNUNET_FS_PublishContext *pc = cls;
- if (GNUNET_SCHEDULER_NO_TASK != pc->upload_task)
- {
- GNUNET_SCHEDULER_cancel (pc->upload_task);
- pc->upload_task = GNUNET_SCHEDULER_NO_TASK;
- }
- GNUNET_FS_file_information_inspect (pc->fi,
- &fip_signal_suspend,
- pc);
- GNUNET_FS_end_top (pc->h, pc->top);
- pc->top = NULL;
- publish_cleanup (pc, NULL);
- }
- /**
- * We have gotten a reply for our space reservation request.
- * Either fail (insufficient space) or start publishing for good.
- *
- * @param cls the 'struct GNUNET_FS_PublishContext*'
- * @param success positive reservation ID on success
- * @param msg error message on error, otherwise NULL
- */
- static void
- finish_reserve (void *cls,
- int success,
- const char *msg)
- {
- struct GNUNET_FS_PublishContext *pc = cls;
- pc->qre = NULL;
- #if DEBUG_PUBLISH
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Reservation complete (%d)!\n",
- success);
- #endif
- if ( (msg != NULL) ||
- (success <= 0) )
- {
- GNUNET_asprintf (&pc->fi->emsg,
- _("Insufficient space for publishing: %s"),
- msg);
- signal_publish_error (pc->fi,
- pc,
- pc->fi->emsg);
- return;
- }
- pc->rid = success;
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == pc->upload_task);
- pc->upload_task
- = GNUNET_SCHEDULER_add_with_priority (GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
- &GNUNET_FS_publish_main_,
- pc);
- }
- /**
- * Publish a file or directory.
- *
- * @param h handle to the file sharing subsystem
- * @param fi information about the file or directory structure to publish
- * @param namespace namespace to publish the file in, NULL for no namespace
- * @param nid identifier to use for the publishd content in the namespace
- * (can be NULL, must be NULL if namespace is NULL)
- * @param nuid update-identifier that will be used for future updates
- * (can be NULL, must be NULL if namespace or nid is NULL)
- * @param options options for the publication
- * @return context that can be used to control the publish operation
- */
- struct GNUNET_FS_PublishContext *
- GNUNET_FS_publish_start (struct GNUNET_FS_Handle *h,
- struct GNUNET_FS_FileInformation *fi,
- struct GNUNET_FS_Namespace *namespace,
- const char *nid,
- const char *nuid,
- enum GNUNET_FS_PublishOptions options)
- {
- struct GNUNET_FS_PublishContext *ret;
- struct GNUNET_DATASTORE_Handle *dsh;
- GNUNET_assert (NULL != h);
- if (0 == (options & GNUNET_FS_PUBLISH_OPTION_SIMULATE_ONLY))
- {
- dsh = GNUNET_DATASTORE_connect (h->cfg);
- if (NULL == dsh)
- return NULL;
- }
- else
- {
- dsh = NULL;
- }
- ret = GNUNET_malloc (sizeof (struct GNUNET_FS_PublishContext));
- ret->dsh = dsh;
- ret->h = h;
- ret->fi = fi;
- ret->namespace = namespace;
- ret->options = options;
- if (namespace != NULL)
- {
- namespace->rc++;
- GNUNET_assert (NULL != nid);
- ret->nid = GNUNET_strdup (nid);
- if (NULL != nuid)
- ret->nuid = GNUNET_strdup (nuid);
- }
- /* signal start */
- GNUNET_FS_file_information_inspect (ret->fi,
- &fip_signal_start,
- ret);
- ret->fi_pos = ret->fi;
- ret->top = GNUNET_FS_make_top (h, &GNUNET_FS_publish_signal_suspend_, ret);
- GNUNET_FS_publish_sync_ (ret);
- if (NULL != ret->dsh)
- {
- GNUNET_assert (NULL == ret->qre);
- GNUNET_log (GNUNET_ERROR_TYPE_INFO,
- _("Reserving space for %u entries and %llu bytes for publication\n"),
- (unsigned int) ret->reserve_entries,
- (unsigned long long) ret->reserve_space);
- ret->qre = GNUNET_DATASTORE_reserve (ret->dsh,
- ret->reserve_space,
- ret->reserve_entries,
- UINT_MAX,
- UINT_MAX,
- GNUNET_TIME_UNIT_FOREVER_REL,
- &finish_reserve,
- ret);
- }
- else
- {
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == ret->upload_task);
- ret->upload_task
- = GNUNET_SCHEDULER_add_with_priority (GNUNET_SCHEDULER_PRIORITY_BACKGROUND,
- &GNUNET_FS_publish_main_,
- ret);
- }
- return ret;
- }
- /**
- * Signal the FS's progress function that we are stopping
- * an upload.
- *
- * @param cls closure (of type "struct GNUNET_FS_PublishContext*")
- * @param fi the entry in the publish-structure
- * @param length length of the file or directory
- * @param meta metadata for the file or directory (can be modified)
- * @param uri pointer to the keywords that will be used for this entry (can be modified)
- * @param bo block options (can be modified)
- * @param do_index should we index?
- * @param client_info pointer to client context set upon creation (can be modified)
- * @return GNUNET_OK to continue (always)
- */
- static int
- fip_signal_stop(void *cls,
- struct GNUNET_FS_FileInformation *fi,
- uint64_t length,
- struct GNUNET_CONTAINER_MetaData *meta,
- struct GNUNET_FS_Uri **uri,
- struct GNUNET_FS_BlockOptions *bo,
- int *do_index,
- void **client_info)
- {
- struct GNUNET_FS_PublishContext*pc = cls;
- struct GNUNET_FS_ProgressInfo pi;
- uint64_t off;
- if (fi->serialization != NULL)
- {
- GNUNET_FS_remove_sync_file_ (pc->h,
- GNUNET_FS_SYNC_PATH_FILE_INFO,
- fi->serialization);
- GNUNET_free (fi->serialization);
- fi->serialization = NULL;
- }
- off = (fi->chk_uri == NULL) ? 0 : length;
- pi.status = GNUNET_FS_STATUS_PUBLISH_STOPPED;
- GNUNET_break (NULL == GNUNET_FS_publish_make_status_ (&pi, pc, fi, off));
- *client_info = NULL;
- return GNUNET_OK;
- }
- /**
- * Stop an upload. Will abort incomplete uploads (but
- * not remove blocks that have already been publishd) or
- * simply clean up the state for completed uploads.
- * Must NOT be called from within the event callback!
- *
- * @param pc context for the upload to stop
- */
- void
- GNUNET_FS_publish_stop (struct GNUNET_FS_PublishContext *pc)
- {
- #if DEBUG_PUBLISH
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Publish stop called\n");
- #endif
- GNUNET_FS_end_top (pc->h, pc->top);
- if (NULL != pc->qre)
- {
- GNUNET_DATASTORE_cancel (pc->qre);
- pc->qre = NULL;
- }
- if (NULL != pc->dsh)
- {
- GNUNET_DATASTORE_disconnect (pc->dsh, GNUNET_NO);
- pc->dsh = NULL;
- }
- if (GNUNET_SCHEDULER_NO_TASK != pc->upload_task)
- {
- GNUNET_SCHEDULER_cancel (pc->upload_task);
- pc->upload_task = GNUNET_SCHEDULER_NO_TASK;
- }
- if (pc->serialization != NULL)
- {
- GNUNET_FS_remove_sync_file_ (pc->h, GNUNET_FS_SYNC_PATH_MASTER_PUBLISH, pc->serialization);
- GNUNET_free (pc->serialization);
- pc->serialization = NULL;
- }
- GNUNET_FS_file_information_inspect (pc->fi,
- &fip_signal_stop,
- pc);
- if (GNUNET_YES == pc->in_network_wait)
- {
- pc->in_network_wait = GNUNET_SYSERR;
- return;
- }
- publish_cleanup (pc, NULL);
- }
- /**
- * Context for the KSK publication.
- */
- struct PublishKskContext
- {
- /**
- * Keywords to use.
- */
- struct GNUNET_FS_Uri *ksk_uri;
- /**
- * Global FS context.
- */
- struct GNUNET_FS_Handle *h;
- /**
- * The master block that we are sending
- * (in plaintext), has "mdsize+slen" more
- * bytes than the struct would suggest.
- */
- struct KBlock *kb;
- /**
- * Buffer of the same size as "kb" for
- * the encrypted version.
- */
- struct KBlock *cpy;
- /**
- * Handle to the datastore, NULL if we are just
- * simulating.
- */
- struct GNUNET_DATASTORE_Handle *dsh;
- /**
- * Handle to datastore PUT request.
- */
- struct GNUNET_DATASTORE_QueueEntry *qre;
- /**
- * Function to call once we're done.
- */
- GNUNET_FS_PublishContinuation cont;
- /**
- * Closure for cont.
- */
- void *cont_cls;
- /**
- * When should the KBlocks expire?
- */
- struct GNUNET_FS_BlockOptions bo;
- /**
- * Size of the serialized metadata.
- */
- ssize_t mdsize;
- /**
- * Size of the (CHK) URI as a string.
- */
- size_t slen;
- /**
- * Keyword that we are currently processing.
- */
- unsigned int i;
- };
- /**
- * Continuation of "GNUNET_FS_publish_ksk" that performs
- * the actual publishing operation (iterating over all
- * of the keywords).
- *
- * @param cls closure of type "struct PublishKskContext*"
- * @param tc unused
- */
- static void
- publish_ksk_cont (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc);
- /**
- * Function called by the datastore API with
- * the result from the PUT request.
- *
- * @param cls closure of type "struct PublishKskContext*"
- * @param success GNUNET_OK on success
- * @param msg error message (or NULL)
- */
- static void
- kb_put_cont (void *cls,
- int success,
- const char *msg)
- {
- struct PublishKskContext *pkc = cls;
- pkc->qre = NULL;
- if (GNUNET_OK != success)
- {
- #if DEBUG_PUBLISH
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "KB PUT operation complete\n");
- #endif
- if (NULL != pkc->dsh)
- {
- GNUNET_DATASTORE_disconnect (pkc->dsh, GNUNET_NO);
- pkc->dsh = NULL;
- }
- GNUNET_free (pkc->cpy);
- GNUNET_free (pkc->kb);
- pkc->cont (pkc->cont_cls,
- NULL,
- msg);
- GNUNET_FS_uri_destroy (pkc->ksk_uri);
- GNUNET_free (pkc);
- return;
- }
- GNUNET_SCHEDULER_add_continuation (&publish_ksk_cont,
- pkc,
- GNUNET_SCHEDULER_REASON_PREREQ_DONE);
- }
- /**
- * Continuation of "GNUNET_FS_publish_ksk" that performs the actual
- * publishing operation (iterating over all of the keywords).
- *
- * @param cls closure of type "struct PublishKskContext*"
- * @param tc unused
- */
- static void
- publish_ksk_cont (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
- {
- struct PublishKskContext *pkc = cls;
- const char *keyword;
- GNUNET_HashCode key;
- GNUNET_HashCode query;
- struct GNUNET_CRYPTO_AesSessionKey skey;
- struct GNUNET_CRYPTO_AesInitializationVector iv;
- struct GNUNET_CRYPTO_RsaPrivateKey *pk;
- if ( (pkc->i == pkc->ksk_uri->data.ksk.keywordCount) ||
- (NULL == pkc->dsh) )
- {
- #if DEBUG_PUBLISH
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "KSK PUT operation complete\n");
- #endif
- if (NULL != pkc->dsh)
- {
- GNUNET_DATASTORE_disconnect (pkc->dsh, GNUNET_NO);
- pkc->dsh = NULL;
- }
- GNUNET_free (pkc->cpy);
- GNUNET_free (pkc->kb);
- pkc->cont (pkc->cont_cls,
- pkc->ksk_uri,
- NULL);
- GNUNET_FS_uri_destroy (pkc->ksk_uri);
- GNUNET_free (pkc);
- return;
- }
- keyword = pkc->ksk_uri->data.ksk.keywords[pkc->i++];
- #if DEBUG_PUBLISH
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Publishing under keyword `%s'\n",
- keyword);
- #endif
- /* first character of keyword indicates if it is
- mandatory or not -- ignore for hashing */
- GNUNET_CRYPTO_hash (&keyword[1], strlen (&keyword[1]), &key);
- GNUNET_CRYPTO_hash_to_aes_key (&key, &skey, &iv);
- GNUNET_CRYPTO_aes_encrypt (&pkc->kb[1],
- pkc->slen + pkc->mdsize,
- &skey,
- &iv,
- &pkc->cpy[1]);
- pk = GNUNET_CRYPTO_rsa_key_create_from_hash (&key);
- GNUNET_assert (NULL != pk);
- GNUNET_CRYPTO_rsa_key_get_public (pk, &pkc->cpy->keyspace);
- GNUNET_CRYPTO_hash (&pkc->cpy->keyspace,
- sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
- &query);
- GNUNET_assert (GNUNET_OK ==
- GNUNET_CRYPTO_rsa_sign (pk,
- &pkc->cpy->purpose,
- &pkc->cpy->signature));
- GNUNET_CRYPTO_rsa_key_free (pk);
- pkc->qre = GNUNET_DATASTORE_put (pkc->dsh,
- 0,
- &query,
- pkc->mdsize +
- sizeof (struct KBlock) +
- pkc->slen,
- pkc->cpy,
- GNUNET_BLOCK_TYPE_FS_KBLOCK,
- pkc->bo.content_priority,
- pkc->bo.anonymity_level,
- pkc->bo.replication_level,
- pkc->bo.expiration_time,
- -2, 1,
- GNUNET_CONSTANTS_SERVICE_TIMEOUT,
- &kb_put_cont,
- pkc);
- }
- /**
- * Publish a CHK under various keywords on GNUnet.
- *
- * @param h handle to the file sharing subsystem
- * @param ksk_uri keywords to use
- * @param meta metadata to use
- * @param uri URI to refer to in the KBlock
- * @param bo per-block options
- * @param options publication options
- * @param cont continuation
- * @param cont_cls closure for cont
- */
- void
- GNUNET_FS_publish_ksk (struct GNUNET_FS_Handle *h,
- const struct GNUNET_FS_Uri *ksk_uri,
- const struct GNUNET_CONTAINER_MetaData *meta,
- const struct GNUNET_FS_Uri *uri,
- const struct GNUNET_FS_BlockOptions *bo,
- enum GNUNET_FS_PublishOptions options,
- GNUNET_FS_PublishContinuation cont,
- void *cont_cls)
- {
- struct PublishKskContext *pkc;
- char *uris;
- size_t size;
- char *kbe;
- char *sptr;
- GNUNET_assert (NULL != uri);
- pkc = GNUNET_malloc (sizeof (struct PublishKskContext));
- pkc->h = h;
- pkc->bo = *bo;
- pkc->cont = cont;
- pkc->cont_cls = cont_cls;
- if (0 == (options & GNUNET_FS_PUBLISH_OPTION_SIMULATE_ONLY))
- {
- pkc->dsh = GNUNET_DATASTORE_connect (h->cfg);
- if (pkc->dsh == NULL)
- {
- cont (cont_cls, NULL, _("Could not connect to datastore."));
- GNUNET_free (pkc);
- return;
- }
- }
- if (meta == NULL)
- pkc->mdsize = 0;
- else
- pkc->mdsize = GNUNET_CONTAINER_meta_data_get_serialized_size (meta);
- GNUNET_assert (pkc->mdsize >= 0);
- uris = GNUNET_FS_uri_to_string (uri);
- pkc->slen = strlen (uris) + 1;
- size = pkc->mdsize + sizeof (struct KBlock) + pkc->slen;
- if (size > MAX_KBLOCK_SIZE)
- {
- size = MAX_KBLOCK_SIZE;
- pkc->mdsize = size - sizeof (struct KBlock) - pkc->slen;
- }
- pkc->kb = GNUNET_malloc (size);
- kbe = (char *) &pkc->kb[1];
- memcpy (kbe, uris, pkc->slen);
- GNUNET_free (uris);
- sptr = &kbe[pkc->slen];
- if (meta != NULL)
- pkc->mdsize = GNUNET_CONTAINER_meta_data_serialize (meta,
- &sptr,
- pkc->mdsize,
- GNUNET_CONTAINER_META_DATA_SERIALIZE_PART);
- if (pkc->mdsize == -1)
- {
- GNUNET_break (0);
- GNUNET_free (pkc->kb);
- if (pkc->dsh != NULL)
- {
- GNUNET_DATASTORE_disconnect (pkc->dsh, GNUNET_NO);
- pkc->dsh = NULL;
- }
- cont (cont_cls, NULL, _("Internal error."));
- GNUNET_free (pkc);
- return;
- }
- size = sizeof (struct KBlock) + pkc->slen + pkc->mdsize;
- pkc->cpy = GNUNET_malloc (size);
- pkc->cpy->purpose.size = htonl (sizeof (struct GNUNET_CRYPTO_RsaSignaturePurpose) +
- sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded) +
- pkc->mdsize +
- pkc->slen);
- pkc->cpy->purpose.purpose = htonl(GNUNET_SIGNATURE_PURPOSE_FS_KBLOCK);
- pkc->ksk_uri = GNUNET_FS_uri_dup (ksk_uri);
- GNUNET_SCHEDULER_add_continuation (&publish_ksk_cont,
- pkc,
- GNUNET_SCHEDULER_REASON_PREREQ_DONE);
- }
- /* end of fs_publish.c */
|