/*
This file is part of GNUnet.
- (C) 2001, 2002, 2003, 2004, 2005, 2006, 2008, 2009 Christian Grothoff (and other contributing authors)
+ (C) 2001-2013 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 2, or (at your
+ 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
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,
+ Free Software Foundation, Inc., 59 Tem ple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
-
/**
* @file fs/fs_search.c
* @brief Helper functions for searching.
* @author Christian Grothoff
- *
- * TODO:
- * - handle SKS updates searches nicely (can wait)
- * - handle availability probes (can wait)
- * - make operations persistent (can wait)
- * - handle namespace advertisements (can wait)
- * - add support for pushing "already seen" information
- * to FS service for bloomfilter (can wait)
*/
-
#include "platform.h"
#include "gnunet_constants.h"
#include "gnunet_fs_service.h"
#include "gnunet_protocols.h"
-#include "fs.h"
-
-#define DEBUG_SEARCH GNUNET_YES
+#include "fs_api.h"
+#include "fs_publish_ublock.h"
+/**
+ * Number of availability trials we perform per search result.
+ */
+#define AVAILABILITY_TRIALS_MAX 8
/**
- * Fill in all of the generic fields for
- * a search event.
+ * Fill in all of the generic fields for a search event and
+ * call the callback.
*
* @param pi structure to fill in
+ * @param h file-sharing handle
* @param sc overall search context
+ * @return value returned by the callback
*/
-static void
-make_search_status (struct GNUNET_FS_ProgressInfo *pi,
- struct GNUNET_FS_SearchContext *sc)
+void *
+GNUNET_FS_search_make_status_ (struct GNUNET_FS_ProgressInfo *pi,
+ struct GNUNET_FS_Handle *h,
+ struct GNUNET_FS_SearchContext *sc)
{
+ void *ret;
+
pi->value.search.sc = sc;
- pi->value.search.cctx
- = sc->client_info;
- pi->value.search.pctx
- = (sc->parent == NULL) ? NULL : sc->parent->client_info;
- pi->value.search.query
- = sc->uri;
- pi->value.search.duration = GNUNET_TIME_absolute_get_duration (sc->start_time);
- pi->value.search.anonymity = sc->anonymity;
+ pi->value.search.cctx = (NULL != sc) ? sc->client_info : NULL;
+ pi->value.search.pctx =
+ ((NULL == sc) || (NULL == sc->psearch_result))
+ ? NULL
+ : sc->psearch_result->client_info;
+ pi->value.search.query = (NULL != sc) ? sc->uri : NULL;
+ pi->value.search.duration = (NULL != sc)
+ ? GNUNET_TIME_absolute_get_duration (sc->start_time)
+ : GNUNET_TIME_UNIT_ZERO;
+ pi->value.search.anonymity = (NULL != sc) ? sc->anonymity : 0;
+ pi->fsh = h;
+ ret = h->upcb (h->upcb_cls, pi);
+ return ret;
}
/**
- * Check if the given result is identical
- * to the given URI.
- *
+ * Check if the given result is identical to the given URI.
+ *
* @param cls points to the URI we check against
* @param key not used
- * @param value a "struct SearchResult" who's URI we
+ * @param value a `struct GNUNET_FS_SearchResult` who's URI we
* should compare with
- * @return GNUNET_SYSERR if the result is present,
- * GNUNET_OK otherwise
+ * @return #GNUNET_SYSERR if the result is present,
+ * #GNUNET_OK otherwise
*/
static int
test_result_present (void *cls,
- const GNUNET_HashCode * key,
- void *value)
+ const struct GNUNET_HashCode * key,
+ void *value)
{
const struct GNUNET_FS_Uri *uri = cls;
- struct SearchResult *sr = value;
+ struct GNUNET_FS_SearchResult *sr = value;
- if (GNUNET_FS_uri_test_equal (uri,
- sr->uri))
+ if (GNUNET_FS_uri_test_equal (uri, sr->uri))
return GNUNET_SYSERR;
return GNUNET_OK;
}
/**
* We've found a new CHK result. Let the client
* know about it.
- *
+ *
* @param sc the search context
* @param sr the specific result
*/
static void
-notify_client_chk_result (struct GNUNET_FS_SearchContext *sc,
- struct SearchResult *sr)
-{
+notify_client_chk_result (struct GNUNET_FS_SearchContext *sc,
+ struct GNUNET_FS_SearchResult *sr)
+{
struct GNUNET_FS_ProgressInfo pi;
pi.status = GNUNET_FS_STATUS_SEARCH_RESULT;
- make_search_status (&pi, sc);
pi.value.search.specifics.result.meta = sr->meta;
pi.value.search.specifics.result.uri = sr->uri;
- sr->client_info = sc->h->upcb (sc->h->upcb_cls,
- &pi);
+ pi.value.search.specifics.result.result = sr;
+ pi.value.search.specifics.result.applicability_rank = sr->optional_support;
+ sr->client_info = GNUNET_FS_search_make_status_ (&pi, sc->h, sc);
}
/**
* We've found new information about an existing CHK result. Let the
* client know about it.
- *
+ *
* @param sc the search context
* @param sr the specific result
*/
static void
-notify_client_chk_update (struct GNUNET_FS_SearchContext *sc,
- struct SearchResult *sr)
-{
+notify_client_chk_update (struct GNUNET_FS_SearchContext *sc,
+ struct GNUNET_FS_SearchResult *sr)
+{
struct GNUNET_FS_ProgressInfo pi;
pi.status = GNUNET_FS_STATUS_SEARCH_UPDATE;
- make_search_status (&pi, sc);
pi.value.search.specifics.update.cctx = sr->client_info;
pi.value.search.specifics.update.meta = sr->meta;
pi.value.search.specifics.update.uri = sr->uri;
- pi.value.search.specifics.update.availability_rank
- = 2*sr->availability_success - sr->availability_trials;
- pi.value.search.specifics.update.availability_certainty
- = sr->availability_trials;
- pi.value.search.specifics.update.applicability_rank
- = sr->optional_support;
- sr->client_info = sc->h->upcb (sc->h->upcb_cls,
- &pi);
+ pi.value.search.specifics.update.availability_rank =
+ 2 * sr->availability_success - sr->availability_trials;
+ pi.value.search.specifics.update.availability_certainty =
+ sr->availability_trials;
+ pi.value.search.specifics.update.applicability_rank = sr->optional_support;
+ pi.value.search.specifics.update.current_probe_time
+ = GNUNET_TIME_absolute_get_duration (sr->probe_active_time);
+ sr->client_info = GNUNET_FS_search_make_status_ (&pi, sc->h, sc);
}
/**
* Context for "get_result_present".
*/
-struct GetResultContext
+struct GetResultContext
{
/**
* The URI we're looking for.
* Where to store a pointer to the search
* result struct if we found a match.
*/
- struct SearchResult *sr;
+ struct GNUNET_FS_SearchResult *sr;
};
/**
* Check if the given result is identical to the given URI and if so
* return it.
- *
- * @param cls a "struct GetResultContext"
+ *
+ * @param cls a `struct GetResultContext`
* @param key not used
- * @param value a "struct SearchResult" who's URI we
+ * @param value a `struct GNUNET_FS_SearchResult` who's URI we
* should compare with
- * @return GNUNET_OK
+ * @return #GNUNET_OK
*/
static int
-get_result_present (void *cls,
- const GNUNET_HashCode * key,
- void *value)
+get_result_present (void *cls, const struct GNUNET_HashCode * key, void *value)
{
struct GetResultContext *grc = cls;
- struct SearchResult *sr = value;
+ struct GNUNET_FS_SearchResult *sr = value;
- if (GNUNET_FS_uri_test_equal (grc->uri,
- sr->uri))
+ if (GNUNET_FS_uri_test_equal (grc->uri, sr->uri))
grc->sr = sr;
return GNUNET_OK;
}
+/**
+ * Signal result of last probe to client and then schedule next
+ * probe.
+ *
+ * @param sr search result to signal for
+ */
+static void
+signal_probe_result (struct GNUNET_FS_SearchResult *sr)
+{
+ struct GNUNET_FS_ProgressInfo pi;
+
+ pi.status = GNUNET_FS_STATUS_SEARCH_UPDATE;
+ pi.value.search.specifics.update.cctx = sr->client_info;
+ pi.value.search.specifics.update.meta = sr->meta;
+ pi.value.search.specifics.update.uri = sr->uri;
+ pi.value.search.specifics.update.availability_rank
+ = 2 * sr->availability_success - sr->availability_trials;
+ pi.value.search.specifics.update.availability_certainty
+ = sr->availability_trials;
+ pi.value.search.specifics.update.applicability_rank = sr->optional_support;
+ pi.value.search.specifics.update.current_probe_time
+ = GNUNET_TIME_absolute_get_duration (sr->probe_active_time);
+ sr->client_info = GNUNET_FS_search_make_status_ (&pi, sr->h, sr->sc);
+ GNUNET_FS_search_start_probe_ (sr);
+}
+
+
+/**
+ * Handle the case where we have failed to receive a response for our probe.
+ *
+ * @param cls our `struct GNUNET_FS_SearchResult *`
+ * @param tc scheduler context
+ */
+static void
+probe_failure_handler (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct GNUNET_FS_SearchResult *sr = cls;
+
+ sr->probe_cancel_task = GNUNET_SCHEDULER_NO_TASK;
+ sr->availability_trials++;
+ GNUNET_FS_download_stop (sr->probe_ctx, GNUNET_YES);
+ sr->probe_ctx = NULL;
+ if (GNUNET_SCHEDULER_NO_TASK != sr->probe_ping_task)
+ {
+ GNUNET_SCHEDULER_cancel (sr->probe_ping_task);
+ sr->probe_ping_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ GNUNET_FS_search_result_sync_ (sr);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Probe #%u for search result %p failed\n",
+ sr->availability_trials,
+ sr);
+ signal_probe_result (sr);
+}
+
+
+/**
+ * Handle the case where we have gotten a response for our probe.
+ *
+ * @param cls our `struct GNUNET_FS_SearchResult *`
+ * @param tc scheduler context
+ */
+static void
+probe_success_handler (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct GNUNET_FS_SearchResult *sr = cls;
+
+ sr->probe_cancel_task = GNUNET_SCHEDULER_NO_TASK;
+ sr->availability_trials++;
+ sr->availability_success++;
+ GNUNET_FS_download_stop (sr->probe_ctx, GNUNET_YES);
+ sr->probe_ctx = NULL;
+ if (GNUNET_SCHEDULER_NO_TASK != sr->probe_ping_task)
+ {
+ GNUNET_SCHEDULER_cancel (sr->probe_ping_task);
+ sr->probe_ping_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ GNUNET_FS_search_result_sync_ (sr);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Probe #%u for search result %p succeeded\n",
+ sr->availability_trials,
+ sr);
+ signal_probe_result (sr);
+}
+
+
+/**
+ * Notification of FS that a search probe has made progress.
+ * This function is used INSTEAD of the client's event handler
+ * for downloads where the #GNUNET_FS_DOWNLOAD_IS_PROBE flag is set.
+ *
+ * @param cls closure, always NULL (!), actual closure
+ * is in the client-context of the info struct
+ * @param info details about the event, specifying the event type
+ * and various bits about the event
+ * @return client-context (for the next progress call
+ * for this operation; should be set to NULL for
+ * SUSPEND and STOPPED events). The value returned
+ * will be passed to future callbacks in the respective
+ * field in the `struct GNUNET_FS_ProgressInfo`.
+ */
+void *
+GNUNET_FS_search_probe_progress_ (void *cls,
+ const struct GNUNET_FS_ProgressInfo *info)
+{
+ struct GNUNET_FS_SearchResult *sr = info->value.download.cctx;
+ struct GNUNET_TIME_Relative dur;
+
+ switch (info->status)
+ {
+ case GNUNET_FS_STATUS_DOWNLOAD_START:
+ /* ignore */
+ break;
+ case GNUNET_FS_STATUS_DOWNLOAD_RESUME:
+ /* probes should never be resumed */
+ GNUNET_assert (0);
+ break;
+ case GNUNET_FS_STATUS_DOWNLOAD_SUSPEND:
+ /* probes should never be suspended */
+ GNUNET_break (0);
+ break;
+ case GNUNET_FS_STATUS_DOWNLOAD_PROGRESS:
+ /* ignore */
+ break;
+ case GNUNET_FS_STATUS_DOWNLOAD_ERROR:
+ if (GNUNET_SCHEDULER_NO_TASK != sr->probe_cancel_task)
+ {
+ GNUNET_SCHEDULER_cancel (sr->probe_cancel_task);
+ sr->probe_cancel_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ sr->probe_cancel_task =
+ GNUNET_SCHEDULER_add_delayed (sr->remaining_probe_time,
+ &probe_failure_handler, sr);
+ break;
+ case GNUNET_FS_STATUS_DOWNLOAD_COMPLETED:
+ if (GNUNET_SCHEDULER_NO_TASK != sr->probe_cancel_task)
+ {
+ GNUNET_SCHEDULER_cancel (sr->probe_cancel_task);
+ sr->probe_cancel_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ sr->probe_cancel_task =
+ GNUNET_SCHEDULER_add_now (&probe_success_handler, sr);
+ break;
+ case GNUNET_FS_STATUS_DOWNLOAD_STOPPED:
+ if (GNUNET_SCHEDULER_NO_TASK != sr->probe_cancel_task)
+ {
+ GNUNET_SCHEDULER_cancel (sr->probe_cancel_task);
+ sr->probe_cancel_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ sr = NULL;
+ break;
+ case GNUNET_FS_STATUS_DOWNLOAD_ACTIVE:
+ if (GNUNET_SCHEDULER_NO_TASK == sr->probe_cancel_task)
+ {
+ sr->probe_active_time = GNUNET_TIME_absolute_get ();
+ sr->probe_cancel_task =
+ GNUNET_SCHEDULER_add_delayed (sr->remaining_probe_time,
+ &probe_failure_handler, sr);
+ }
+ break;
+ case GNUNET_FS_STATUS_DOWNLOAD_INACTIVE:
+ if (GNUNET_SCHEDULER_NO_TASK != sr->probe_cancel_task)
+ {
+ GNUNET_SCHEDULER_cancel (sr->probe_cancel_task);
+ sr->probe_cancel_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ dur = GNUNET_TIME_absolute_get_duration (sr->probe_active_time);
+ sr->remaining_probe_time =
+ GNUNET_TIME_relative_subtract (sr->remaining_probe_time, dur);
+ if (0 == sr->remaining_probe_time.rel_value_us)
+ sr->probe_cancel_task =
+ GNUNET_SCHEDULER_add_now (&probe_failure_handler, sr);
+ GNUNET_FS_search_result_sync_ (sr);
+ break;
+ default:
+ GNUNET_break (0);
+ return NULL;
+ }
+ return sr;
+}
+
+
+/**
+ * Task run periodically to remind clients that a probe is active.
+ *
+ * @param cls the 'struct GNUNET_FS_SearchResult' that we are probing for
+ * @param tc scheduler context
+ */
+static void
+probe_ping_task (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct GNUNET_FS_SearchResult *sr = cls;
+
+ signal_probe_result (sr);
+ sr->probe_ping_task
+ = GNUNET_SCHEDULER_add_delayed (GNUNET_FS_PROBE_UPDATE_FREQUENCY,
+ &probe_ping_task,
+ sr);
+}
+
+
+/**
+ * Start download probes for the given search result.
+ *
+ * @param sr the search result
+ */
+void
+GNUNET_FS_search_start_probe_ (struct GNUNET_FS_SearchResult *sr)
+{
+ uint64_t off;
+ uint64_t len;
+
+ if (NULL != sr->probe_ctx)
+ return;
+ if (NULL != sr->download)
+ return;
+ if (0 == (sr->h->flags & GNUNET_FS_FLAGS_DO_PROBES))
+ return;
+ if (sr->availability_trials > AVAILABILITY_TRIALS_MAX)
+ return;
+ if ( (GNUNET_FS_URI_CHK != sr->uri->type) && (GNUNET_FS_URI_LOC != sr->uri->type))
+ return;
+ len = GNUNET_FS_uri_chk_get_file_size (sr->uri);
+ if (0 == len)
+ return;
+ if ((len <= DBLOCK_SIZE) && (sr->availability_success > 0))
+ return;
+ off = len / DBLOCK_SIZE;
+ if (off > 0)
+ off = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, off);
+ off *= DBLOCK_SIZE;
+ if (len - off < DBLOCK_SIZE)
+ len = len - off;
+ else
+ len = DBLOCK_SIZE;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Starting probe #%u (at offset %llu) for search result %p\n",
+ sr->availability_trials + 1,
+ (unsigned long long) off,
+ sr);
+ sr->remaining_probe_time =
+ GNUNET_TIME_relative_multiply (sr->h->avg_block_latency,
+ 2 * (1 + sr->availability_trials));
+ sr->probe_ctx =
+ GNUNET_FS_download_start (sr->h, sr->uri, sr->meta, NULL, NULL, off,
+ len, sr->anonymity,
+ GNUNET_FS_DOWNLOAD_NO_TEMPORARIES |
+ GNUNET_FS_DOWNLOAD_IS_PROBE, sr, NULL);
+ sr->probe_ping_task
+ = GNUNET_SCHEDULER_add_now (&probe_ping_task,
+ sr);
+}
+
+
+/**
+ * Start download probes for the given search result.
+ *
+ * @param h file-sharing handle to use for the operation
+ * @param uri URI to probe
+ * @param meta meta data associated with the URI
+ * @param client_info client info pointer to use for associated events
+ * @param anonymity anonymity level to use for the probes
+ * @return the search result handle to access the probe activity
+ */
+struct GNUNET_FS_SearchResult *
+GNUNET_FS_probe (struct GNUNET_FS_Handle *h,
+ const struct GNUNET_FS_Uri *uri,
+ const struct GNUNET_CONTAINER_MetaData *meta,
+ void *client_info,
+ uint32_t anonymity)
+{
+ struct GNUNET_FS_SearchResult *sr;
+
+ GNUNET_assert (NULL != h);
+ sr = GNUNET_new (struct GNUNET_FS_SearchResult);
+ sr->h = h;
+ sr->uri = GNUNET_FS_uri_dup (uri);
+ sr->meta = GNUNET_CONTAINER_meta_data_duplicate (meta);
+ sr->client_info = client_info;
+ sr->anonymity = anonymity;
+ GNUNET_FS_search_start_probe_ (sr);
+ return sr;
+}
+
+
+/**
+ * Stop probing activity associated with a search result.
+ *
+ * @param sr search result
+ */
+static void
+GNUNET_FS_search_stop_probe_ (struct GNUNET_FS_SearchResult *sr)
+{
+ if (NULL != sr->probe_ctx)
+ {
+ GNUNET_FS_download_stop (sr->probe_ctx, GNUNET_YES);
+ sr->probe_ctx = NULL;
+ }
+ if (GNUNET_SCHEDULER_NO_TASK != sr->probe_ping_task)
+ {
+ GNUNET_SCHEDULER_cancel (sr->probe_ping_task);
+ sr->probe_ping_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ if (GNUNET_SCHEDULER_NO_TASK != sr->probe_cancel_task)
+ {
+ GNUNET_SCHEDULER_cancel (sr->probe_cancel_task);
+ sr->probe_cancel_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+}
+
+
+/**
+ * Stop probe activity. Must ONLY be used on values
+ * returned from #GNUNET_FS_probe.
+ *
+ * @param sr search result to stop probing for (freed)
+ * @return the value of the 'client_info' pointer
+ */
+void *
+GNUNET_FS_probe_stop (struct GNUNET_FS_SearchResult *sr)
+{
+ void *client_info;
+
+ GNUNET_assert (NULL == sr->sc);
+ GNUNET_FS_search_stop_probe_ (sr);
+ GNUNET_FS_uri_destroy (sr->uri);
+ GNUNET_CONTAINER_meta_data_destroy (sr->meta);
+ client_info = sr->client_info;
+ GNUNET_free (sr);
+ return client_info;
+}
+
+
/**
* We have received a KSK result. Check how it fits in with the
* overall query and notify the client accordingly.
* @param ent entry for the specific keyword
* @param uri the URI that was found
* @param meta metadata associated with the URI
- * under the "ent" keyword
+ * under the @a ent keyword
*/
static void
-process_ksk_result (struct GNUNET_FS_SearchContext *sc,
- struct SearchRequestEntry *ent,
- const struct GNUNET_FS_Uri *uri,
- const struct GNUNET_CONTAINER_MetaData *meta)
+process_ksk_result (struct GNUNET_FS_SearchContext *sc,
+ struct SearchRequestEntry *ent,
+ const struct GNUNET_FS_Uri *uri,
+ const struct GNUNET_CONTAINER_MetaData *meta)
{
- GNUNET_HashCode key;
- struct SearchResult *sr;
+ struct GNUNET_HashCode key;
+ struct GNUNET_FS_SearchResult *sr;
struct GetResultContext grc;
int is_new;
+ unsigned int koff;
/* check if new */
+ GNUNET_assert (NULL != sc);
GNUNET_FS_uri_to_key (uri, &key);
if (GNUNET_SYSERR ==
- GNUNET_CONTAINER_multihashmap_get_multiple (ent->results,
- &key,
- &test_result_present,
- (void*) uri))
- return; /* duplicate result */
+ GNUNET_CONTAINER_multihashmap_get_multiple (ent->results, &key,
+ &test_result_present,
+ (void *) uri))
+ return; /* duplicate result */
/* try to find search result in master map */
grc.sr = NULL;
grc.uri = uri;
- GNUNET_CONTAINER_multihashmap_get_multiple (sc->master_result_map,
- &key,
- &get_result_present,
- &grc);
+ GNUNET_CONTAINER_multihashmap_get_multiple (sc->master_result_map, &key,
+ &get_result_present, &grc);
sr = grc.sr;
is_new = (NULL == sr) || (sr->mandatory_missing > 0);
if (NULL == sr)
- {
- sr = GNUNET_malloc (sizeof (struct SearchResult));
- sr->uri = GNUNET_FS_uri_dup (uri);
- sr->meta = GNUNET_CONTAINER_meta_data_duplicate (meta);
- sr->mandatory_missing = sc->mandatory_count;
- GNUNET_CONTAINER_multihashmap_put (sc->master_result_map,
- &key,
- sr,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
- }
+ {
+ sr = GNUNET_new (struct GNUNET_FS_SearchResult);
+ sr->h = sc->h;
+ sr->sc = sc;
+ sr->anonymity = sc->anonymity;
+ sr->uri = GNUNET_FS_uri_dup (uri);
+ sr->meta = GNUNET_CONTAINER_meta_data_duplicate (meta);
+ sr->mandatory_missing = sc->mandatory_count;
+ sr->key = key;
+ sr->keyword_bitmap = GNUNET_malloc ((sc->uri->data.ksk.keywordCount + 7) / 8); /* round up, count bits */
+ GNUNET_CONTAINER_multihashmap_put (sc->master_result_map, &key, sr,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
+ }
else
- {
- /* FIXME: consider combining the meta data */
- }
+ {
+ GNUNET_CONTAINER_meta_data_merge (sr->meta, meta);
+ }
+ koff = ent - sc->requests;
+ GNUNET_assert ( (ent >= sc->requests) && (koff < sc->uri->data.ksk.keywordCount));
+ sr->keyword_bitmap[koff / 8] |= (1 << (koff % 8));
/* check if mandatory satisfied */
if (ent->mandatory)
sr->mandatory_missing--;
notify_client_chk_result (sc, sr);
else
notify_client_chk_update (sc, sr);
- /* FIXME: consider starting probes for "sr" */
+ GNUNET_FS_search_result_sync_ (sr);
+ GNUNET_FS_search_start_probe_ (sr);
}
* @param uri specifies the search parameters; can be
* a KSK URI or an SKS URI.
* @param anonymity desired level of anonymity
+ * @param options options for the search
* @param cctx client context
- * @param parent parent search (for namespace update searches)
+ * @param psearch parent search result (for namespace update searches)
* @return context that can be used to control the search
*/
static struct GNUNET_FS_SearchContext *
-search_start (struct GNUNET_FS_Handle *h,
- const struct GNUNET_FS_Uri *uri,
- uint32_t anonymity,
- void *cctx,
- struct GNUNET_FS_SearchContext *parent);
+search_start (struct GNUNET_FS_Handle *h, const struct GNUNET_FS_Uri *uri,
+ uint32_t anonymity, enum GNUNET_FS_SearchOptions options,
+ void *cctx, struct GNUNET_FS_SearchResult *psearch);
/**
* @param meta metadata associated with the URI
*/
static void
-process_sks_result (struct GNUNET_FS_SearchContext *sc,
- const char *id_update,
- const struct GNUNET_FS_Uri *uri,
- const struct GNUNET_CONTAINER_MetaData *meta)
+process_sks_result (struct GNUNET_FS_SearchContext *sc,
+ const char *id_update,
+ const struct GNUNET_FS_Uri *uri,
+ const struct GNUNET_CONTAINER_MetaData *meta)
{
struct GNUNET_FS_Uri uu;
- GNUNET_HashCode key;
- struct SearchResult *sr;
+ struct GNUNET_HashCode key;
+ struct GNUNET_FS_SearchResult *sr;
/* check if new */
+ GNUNET_assert (NULL != sc);
GNUNET_FS_uri_to_key (uri, &key);
- GNUNET_CRYPTO_hash_xor (&uri->data.chk.chk.key,
- &uri->data.chk.chk.query,
- &key);
+ GNUNET_CRYPTO_hash_xor (&uri->data.chk.chk.key, &uri->data.chk.chk.query,
+ &key);
if (GNUNET_SYSERR ==
- GNUNET_CONTAINER_multihashmap_get_multiple (sc->master_result_map,
- &key,
- &test_result_present,
- (void*) uri))
- return; /* duplicate result */
- sr = GNUNET_malloc (sizeof (struct SearchResult));
+ GNUNET_CONTAINER_multihashmap_get_multiple (sc->master_result_map, &key,
+ &test_result_present,
+ (void *) uri))
+ return; /* duplicate result */
+ sr = GNUNET_new (struct GNUNET_FS_SearchResult);
+ sr->h = sc->h;
+ sr->sc = sc;
+ sr->anonymity = sc->anonymity;
sr->uri = GNUNET_FS_uri_dup (uri);
sr->meta = GNUNET_CONTAINER_meta_data_duplicate (meta);
- GNUNET_CONTAINER_multihashmap_put (sc->master_result_map,
- &key,
- sr,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
- /* FIXME: consider starting probes for "sr" */
-
+ sr->key = key;
+ GNUNET_CONTAINER_multihashmap_put (sc->master_result_map, &key, sr,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
+ GNUNET_FS_search_result_sync_ (sr);
+ GNUNET_FS_search_start_probe_ (sr);
/* notify client */
notify_client_chk_result (sc, sr);
/* search for updates */
- if (strlen (id_update) == 0)
- return; /* no updates */
- uu.type = sks;
- uu.data.sks.namespace = sc->uri->data.sks.namespace;
+ if (0 == strlen (id_update))
+ return; /* no updates */
+ uu.type = GNUNET_FS_URI_SKS;
+ uu.data.sks.ns = sc->uri->data.sks.ns;
uu.data.sks.identifier = GNUNET_strdup (id_update);
- /* FIXME: should attach update search
- to the individual result, not
- the entire SKS search! */
- search_start (sc->h,
- &uu,
- sc->anonymity,
- NULL,
- sc);
+ (void) search_start (sc->h, &uu, sc->anonymity, sc->options, NULL, sr);
+ GNUNET_free (uu.data.sks.identifier);
+}
+
+
+/**
+ * Decrypt a ublock using a 'keyword' as the passphrase. Given the
+ * KSK public key derived from the keyword, this function looks up
+ * the original keyword in the search context and decrypts the
+ * given ciphertext block.
+ *
+ * @param sc search context with the keywords
+ * @param dpub derived public key used for the search
+ * @param edata encrypted data
+ * @param edata_size number of bytes in @a edata (and @a data)
+ * @param data where to store the plaintext
+ * @return keyword index on success, #GNUNET_SYSERR on error (no such
+ * keyword, internal error)
+ */
+static int
+decrypt_block_with_keyword (const struct GNUNET_FS_SearchContext *sc,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *dpub,
+ const void *edata,
+ size_t edata_size,
+ char *data)
+{
+ const struct GNUNET_CRYPTO_EcdsaPrivateKey *anon;
+ struct GNUNET_CRYPTO_EcdsaPublicKey anon_pub;
+ unsigned int i;
+
+ /* find key */
+ for (i = 0; i < sc->uri->data.ksk.keywordCount; i++)
+ if (0 == memcmp (dpub,
+ &sc->requests[i].dpub,
+ sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey)))
+ break;
+ if (i == sc->uri->data.ksk.keywordCount)
+ {
+ /* oops, does not match any of our keywords!? */
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ /* decrypt */
+ anon = GNUNET_CRYPTO_ecdsa_key_get_anonymous ();
+ GNUNET_CRYPTO_ecdsa_key_get_public (anon, &anon_pub);
+ GNUNET_FS_ublock_decrypt_ (edata, edata_size,
+ &anon_pub,
+ sc->requests[i].keyword,
+ data);
+ return i;
}
/**
- * Process a keyword-search result.
+ * Process a keyword search result. The actual type of block is
+ * a UBlock; we know it is a keyword search result because that's
+ * what we were searching for.
*
* @param sc our search context
- * @param kb the kblock
- * @param size size of kb
+ * @param ub the ublock with the keyword search result
+ * @param size size of @a ub
*/
static void
process_kblock (struct GNUNET_FS_SearchContext *sc,
- const struct KBlock *kb,
- size_t size)
+ const struct UBlock *ub,
+ size_t size)
{
- unsigned int i;
size_t j;
- GNUNET_HashCode q;
- char pt[size - sizeof (struct KBlock)];
- struct GNUNET_CRYPTO_AesSessionKey skey;
- struct GNUNET_CRYPTO_AesInitializationVector iv;
+ char pt[size - sizeof (struct UBlock)];
const char *eos;
struct GNUNET_CONTAINER_MetaData *meta;
struct GNUNET_FS_Uri *uri;
char *emsg;
-
- GNUNET_CRYPTO_hash (&kb->keyspace,
- sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
- &q);
- /* find key */
- for (i=0;i<sc->uri->data.ksk.keywordCount;i++)
- if (0 == memcmp (&q,
- &sc->requests[i].query,
- sizeof (GNUNET_HashCode)))
- break;
- if (i == sc->uri->data.ksk.keywordCount)
- {
- /* oops, does not match any of our keywords!? */
- GNUNET_break (0);
- return;
- }
- /* decrypt */
- GNUNET_CRYPTO_hash_to_aes_key (&sc->requests[i].key, &skey, &iv);
- GNUNET_CRYPTO_aes_decrypt (&kb[1],
- size - sizeof (struct KBlock),
- &skey,
- &iv,
- pt);
- /* parse */
- eos = memchr (pt, 0, sizeof (pt));
+ int i;
+
+ if (-1 == (i = decrypt_block_with_keyword (sc,
+ &ub->verification_key,
+ &ub[1],
+ size - sizeof (struct UBlock),
+ pt)))
+ return;
+ /* parse; pt[0] is just '\0', so we skip over that */
+ eos = memchr (&pt[1], '\0', sizeof (pt) - 1);
if (NULL == eos)
- {
- GNUNET_break_op (0);
- return;
- }
+ {
+ GNUNET_break_op (0);
+ return;
+ }
+ if (NULL == (uri = GNUNET_FS_uri_parse (&pt[1], &emsg)))
+ {
+ GNUNET_break_op (0); /* ublock malformed */
+ GNUNET_free_non_null (emsg);
+ return;
+ }
j = eos - pt + 1;
- meta = GNUNET_CONTAINER_meta_data_deserialize (&pt[j],
- sizeof (pt) - j);
- if (meta == NULL)
- {
- GNUNET_break_op (0); /* kblock malformed */
- return;
- }
- uri = GNUNET_FS_uri_parse (pt, &emsg);
- if (uri == NULL)
- {
- GNUNET_break_op (0); /* kblock malformed */
- GNUNET_free_non_null (emsg);
- GNUNET_CONTAINER_meta_data_destroy (meta);
- return;
- }
- /* process */
+ if (sizeof (pt) == j)
+ meta = GNUNET_CONTAINER_meta_data_create ();
+ else
+ meta = GNUNET_CONTAINER_meta_data_deserialize (&pt[j], sizeof (pt) - j);
+ if (NULL == meta)
+ {
+ GNUNET_break_op (0); /* ublock malformed */
+ GNUNET_FS_uri_destroy (uri);
+ return;
+ }
process_ksk_result (sc, &sc->requests[i], uri, meta);
/* clean up */
/**
- * Process a namespace-search result.
+ * Process a namespace-search result. The actual type of block is
+ * a UBlock; we know it is a namespace search result because that's
+ * what we were searching for.
*
* @param sc our search context
- * @param sb the sblock
- * @param size size of sb
+ * @param ub the ublock with a namespace result
+ * @param size size of @a ub
*/
static void
process_sblock (struct GNUNET_FS_SearchContext *sc,
- const struct SBlock *sb,
- size_t size)
+ const struct UBlock *ub,
+ size_t size)
{
- size_t len = size - sizeof (struct SBlock);
+ size_t len = size - sizeof (struct UBlock);
char pt[len];
- struct GNUNET_CRYPTO_AesSessionKey skey;
- struct GNUNET_CRYPTO_AesInitializationVector iv;
struct GNUNET_FS_Uri *uri;
struct GNUNET_CONTAINER_MetaData *meta;
const char *id;
const char *uris;
size_t off;
char *emsg;
- GNUNET_HashCode key;
- char *identifier;
- /* decrypt */
- identifier = sc->uri->data.sks.identifier;
- GNUNET_CRYPTO_hash (identifier,
- strlen (identifier),
- &key);
- GNUNET_CRYPTO_hash_to_aes_key (&key, &skey, &iv);
- GNUNET_CRYPTO_aes_encrypt (&sb[1],
- len,
- &skey,
- &iv,
+ GNUNET_FS_ublock_decrypt_ (&ub[1], len,
+ &sc->uri->data.sks.ns,
+ sc->uri->data.sks.identifier,
pt);
/* parse */
- off = GNUNET_STRINGS_buffer_tokenize (pt,
- len,
- 2,
- &id,
- &uris);
- if (off == 0)
- {
- GNUNET_break_op (0); /* sblock malformed */
- return;
- }
- meta = GNUNET_CONTAINER_meta_data_deserialize (&pt[off],
- len - off);
- if (meta == NULL)
- {
- GNUNET_break_op (0); /* sblock malformed */
- return;
- }
- uri = GNUNET_FS_uri_parse (uris, &emsg);
- if (uri == NULL)
- {
- GNUNET_break_op (0); /* sblock malformed */
- GNUNET_free_non_null (emsg);
- GNUNET_CONTAINER_meta_data_destroy (meta);
- return;
- }
+ if (0 == (off = GNUNET_STRINGS_buffer_tokenize (pt, len, 2, &id, &uris)))
+ {
+ GNUNET_break_op (0); /* ublock malformed */
+ return;
+ }
+ if (NULL == (meta = GNUNET_CONTAINER_meta_data_deserialize (&pt[off], len - off)))
+ {
+ GNUNET_break_op (0); /* ublock malformed */
+ return;
+ }
+ if (NULL == (uri = GNUNET_FS_uri_parse (uris, &emsg)))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Failed to parse URI `%s': %s\n"),
+ uris, emsg);
+ GNUNET_break_op (0); /* ublock malformed */
+ GNUNET_free_non_null (emsg);
+ GNUNET_CONTAINER_meta_data_destroy (meta);
+ return;
+ }
/* process */
process_sks_result (sc, id, uri, meta);
/* clean up */
* @param type type of the result
* @param expiration when it will expire
* @param data the (encrypted) response
- * @param size size of data
+ * @param size size of @a data
*/
static void
process_result (struct GNUNET_FS_SearchContext *sc,
- uint32_t type,
- struct GNUNET_TIME_Absolute expiration,
+ enum GNUNET_BLOCK_Type type,
+ struct GNUNET_TIME_Absolute expiration,
const void *data,
- size_t size)
+ size_t size)
{
- if (GNUNET_TIME_absolute_get_duration (expiration).value > 0)
- return; /* result expired */
+ if (GNUNET_TIME_absolute_get_duration (expiration).rel_value_us > 0)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Result received has already expired.\n");
+ return; /* result expired */
+ }
switch (type)
- {
- case GNUNET_DATASTORE_BLOCKTYPE_KBLOCK:
- if (! GNUNET_FS_uri_test_ksk (sc->uri))
- {
- GNUNET_break (0);
- return;
- }
- if (sizeof (struct KBlock) > size)
- {
- GNUNET_break_op (0);
- return;
- }
- process_kblock (sc, data, size);
- break;
- case GNUNET_DATASTORE_BLOCKTYPE_SBLOCK:
- if (! GNUNET_FS_uri_test_ksk (sc->uri))
- {
- GNUNET_break (0);
- return;
- }
- if (sizeof (struct SBlock) > size)
- {
- GNUNET_break_op (0);
- return;
- }
+ {
+ case GNUNET_BLOCK_TYPE_FS_UBLOCK:
+ if (GNUNET_FS_URI_SKS == sc->uri->type)
process_sblock (sc, data, size);
- break;
- case GNUNET_DATASTORE_BLOCKTYPE_ANY:
- case GNUNET_DATASTORE_BLOCKTYPE_DBLOCK:
- case GNUNET_DATASTORE_BLOCKTYPE_ONDEMAND:
- case GNUNET_DATASTORE_BLOCKTYPE_IBLOCK:
- GNUNET_break (0);
- break;
- default:
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- _("Got result with unknown block type `%d', ignoring"),
- type);
- break;
- }
+ else
+ process_kblock (sc, data, size);
+ break;
+ case GNUNET_BLOCK_TYPE_ANY:
+ GNUNET_break (0);
+ break;
+ case GNUNET_BLOCK_TYPE_FS_DBLOCK:
+ GNUNET_break (0);
+ break;
+ case GNUNET_BLOCK_TYPE_FS_ONDEMAND:
+ GNUNET_break (0);
+ break;
+ case GNUNET_BLOCK_TYPE_FS_IBLOCK:
+ GNUNET_break (0);
+ break;
+ default:
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Got result with unknown block type `%d', ignoring"), type);
+ break;
+ }
}
*
* @param sc the search to reconnec
*/
-static void
+static void
try_reconnect (struct GNUNET_FS_SearchContext *sc);
* @param cls closure
* @param msg message received, NULL on timeout or fatal error
*/
-static void
-receive_results (void *cls,
- const struct GNUNET_MessageHeader * msg)
+static void
+receive_results (void *cls, const struct GNUNET_MessageHeader *msg)
{
struct GNUNET_FS_SearchContext *sc = cls;
- const struct PutMessage *cm;
+ const struct ClientPutMessage *cm;
uint16_t msize;
- if ( (NULL == msg) ||
- (ntohs (msg->type) != GNUNET_MESSAGE_TYPE_FS_PUT) ||
- (ntohs (msg->size) <= sizeof (struct PutMessage)) )
- {
- try_reconnect (sc);
- return;
- }
+ if ((NULL == msg) || (ntohs (msg->type) != GNUNET_MESSAGE_TYPE_FS_PUT) ||
+ (ntohs (msg->size) <= sizeof (struct ClientPutMessage)))
+ {
+ try_reconnect (sc);
+ return;
+ }
msize = ntohs (msg->size);
- cm = (const struct PutMessage*) msg;
- process_result (sc,
- ntohl (cm->type),
- GNUNET_TIME_absolute_ntoh (cm->expiration),
- &cm[1],
- msize - sizeof (struct PutMessage));
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Receiving %u bytes of result from fs service\n", msize);
+ cm = (const struct ClientPutMessage *) msg;
+ process_result (sc, ntohl (cm->type),
+ GNUNET_TIME_absolute_ntoh (cm->expiration), &cm[1],
+ msize - sizeof (struct ClientPutMessage));
/* continue receiving */
- GNUNET_CLIENT_receive (sc->client,
- &receive_results,
- sc,
- GNUNET_TIME_UNIT_FOREVER_REL);
+ GNUNET_CLIENT_receive (sc->client, &receive_results, sc,
+ GNUNET_TIME_UNIT_FOREVER_REL);
+}
+
+
+/**
+ * Schedule the transmission of the (next) search request
+ * to the service.
+ *
+ * @param sc context for the search
+ */
+static void
+schedule_transmit_search_request (struct GNUNET_FS_SearchContext *sc);
+
+
+/**
+ * Closure for 'build_result_set'.
+ */
+struct MessageBuilderContext
+{
+ /**
+ * How many entries can we store to xoff.
+ */
+ unsigned int put_cnt;
+
+ /**
+ * How many entries should we skip.
+ */
+ unsigned int skip_cnt;
+
+ /**
+ * Where to store the keys.
+ */
+ struct GNUNET_HashCode *xoff;
+
+ /**
+ * Search context we are iterating for.
+ */
+ struct GNUNET_FS_SearchContext *sc;
+
+ /**
+ * Keyword offset the search result must match (0 for SKS)
+ */
+ unsigned int keyword_offset;
+};
+
+
+/**
+ * Iterating over the known results, pick those matching the given
+ * result range and store their keys at 'xoff'.
+ *
+ * @param cls the `struct MessageBuilderContext`
+ * @param key key for a result
+ * @param value the search result
+ * @return #GNUNET_OK to continue iterating
+ */
+static int
+build_result_set (void *cls, const struct GNUNET_HashCode * key, void *value)
+{
+ struct MessageBuilderContext *mbc = cls;
+ struct GNUNET_FS_SearchResult *sr = value;
+
+ if ( (NULL != sr->keyword_bitmap) &&
+ (0 == (sr->keyword_bitmap[mbc->keyword_offset / 8] & (1 << (mbc->keyword_offset % 8)))) )
+ return GNUNET_OK; /* have no match for this keyword yet */
+ if (mbc->skip_cnt > 0)
+ {
+ mbc->skip_cnt--;
+ return GNUNET_OK;
+ }
+ if (0 == mbc->put_cnt)
+ return GNUNET_SYSERR;
+ mbc->sc->search_request_map_offset++;
+ mbc->xoff[--mbc->put_cnt] = *key;
+
+ return GNUNET_OK;
+}
+
+
+/**
+ * Iterating over the known results, count those
+ * matching the given result range and increment
+ * put count for each.
+ *
+ * @param cls the `struct MessageBuilderContext`
+ * @param key key for a result
+ * @param value the search result
+ * @return #GNUNET_OK to continue iterating
+ */
+static int
+find_result_set (void *cls, const struct GNUNET_HashCode * key, void *value)
+{
+ struct MessageBuilderContext *mbc = cls;
+ struct GNUNET_FS_SearchResult *sr = value;
+
+ if ( (NULL != sr->keyword_bitmap) &&
+ (0 == (sr->keyword_bitmap[mbc->keyword_offset / 8] & (1 << (mbc->keyword_offset % 8)))) )
+ return GNUNET_OK; /* have no match for this keyword yet */
+ mbc->put_cnt++;
+ return GNUNET_OK;
}
* file-sharing service. Do it.
*
* @param cls closure
- * @param size number of bytes available in buf
+ * @param size number of bytes available in @a buf
* @param buf where the callee should write the message
- * @return number of bytes written to buf
+ * @return number of bytes written to @a buf
*/
static size_t
-transmit_search_request (void *cls,
- size_t size,
- void *buf)
+transmit_search_request (void *cls, size_t size, void *buf)
{
struct GNUNET_FS_SearchContext *sc = cls;
+ struct MessageBuilderContext mbc;
size_t msize;
struct SearchMessage *sm;
- unsigned int i;
- const char *identifier;
- GNUNET_HashCode key;
- GNUNET_HashCode idh;
+ struct GNUNET_CRYPTO_EcdsaPublicKey dpub;
+ unsigned int sqms;
+ uint32_t options;
if (NULL == buf)
+ {
+ try_reconnect (sc);
+ return 0;
+ }
+ mbc.sc = sc;
+ mbc.skip_cnt = sc->search_request_map_offset;
+ sm = buf;
+ sm->header.type = htons (GNUNET_MESSAGE_TYPE_FS_START_SEARCH);
+ mbc.xoff = (struct GNUNET_HashCode *) & sm[1];
+ options = SEARCH_MESSAGE_OPTION_NONE;
+ if (0 != (sc->options & GNUNET_FS_SEARCH_OPTION_LOOPBACK_ONLY))
+ options |= SEARCH_MESSAGE_OPTION_LOOPBACK_ONLY;
+ if (GNUNET_FS_uri_test_ksk (sc->uri))
+ {
+ msize = sizeof (struct SearchMessage);
+ GNUNET_assert (size >= msize);
+ mbc.keyword_offset = sc->keyword_offset;
+ /* calculate total number of known results (in put_cnt => sqms) */
+ mbc.put_cnt = 0;
+ GNUNET_CONTAINER_multihashmap_iterate (sc->master_result_map,
+ &find_result_set, &mbc);
+ sqms = mbc.put_cnt;
+ /* calculate how many results we can send in this message */
+ mbc.put_cnt = (size - msize) / sizeof (struct GNUNET_HashCode);
+ mbc.put_cnt = GNUNET_MIN (mbc.put_cnt, sqms - mbc.skip_cnt);
+ if (sc->search_request_map_offset < sqms)
+ GNUNET_assert (mbc.put_cnt > 0);
+
+ /* now build message */
+ msize += sizeof (struct GNUNET_HashCode) * mbc.put_cnt;
+ sm->header.size = htons (msize);
+ sm->type = htonl (GNUNET_BLOCK_TYPE_FS_UBLOCK);
+ sm->anonymity_level = htonl (sc->anonymity);
+ memset (&sm->target, 0, sizeof (struct GNUNET_PeerIdentity));
+ sm->query = sc->requests[sc->keyword_offset].uquery;
+ GNUNET_CONTAINER_multihashmap_iterate (sc->master_result_map,
+ &build_result_set, &mbc);
+ GNUNET_assert (sqms >= sc->search_request_map_offset);
+ if (sqms != sc->search_request_map_offset)
{
- try_reconnect (sc);
- return 0;
+ /* more requesting to be done... */
+ sm->options = htonl (options | SEARCH_MESSAGE_OPTION_CONTINUED);
+ schedule_transmit_search_request (sc);
+ return msize;
}
- if (GNUNET_FS_uri_test_ksk (sc->uri))
+ sm->options = htonl (options);
+ sc->keyword_offset++;
+ if (sc->uri->data.ksk.keywordCount != sc->keyword_offset)
{
- msize = sizeof (struct SearchMessage) * sc->uri->data.ksk.keywordCount;
- GNUNET_assert (size >= msize);
- sm = buf;
- memset (sm, 0, msize);
- for (i=0;i<sc->uri->data.ksk.keywordCount;i++)
- {
- sm[i].header.size = htons (sizeof (struct SearchMessage));
- sm[i].header.type = htons (GNUNET_MESSAGE_TYPE_FS_START_SEARCH);
- sm[i].type = htonl (GNUNET_DATASTORE_BLOCKTYPE_KBLOCK);
- sm[i].anonymity_level = htonl (sc->anonymity);
- sm[i].query = sc->requests[i].query;
- }
+ /* more requesting to be done... */
+ schedule_transmit_search_request (sc);
+ return msize;
}
+ }
else
+ {
+ GNUNET_assert (GNUNET_FS_uri_test_sks (sc->uri));
+ msize = sizeof (struct SearchMessage);
+ GNUNET_assert (size >= msize);
+ sm->type = htonl (GNUNET_BLOCK_TYPE_FS_UBLOCK);
+ sm->anonymity_level = htonl (sc->anonymity);
+ memset (&sm->target, 0, sizeof (struct GNUNET_PeerIdentity));
+ GNUNET_CRYPTO_ecdsa_public_key_derive (&sc->uri->data.sks.ns,
+ sc->uri->data.sks.identifier,
+ "fs-ublock",
+ &dpub);
+ GNUNET_CRYPTO_hash (&dpub,
+ sizeof (dpub),
+ &sm->query);
+ mbc.put_cnt = (size - msize) / sizeof (struct GNUNET_HashCode);
+ sqms = GNUNET_CONTAINER_multihashmap_size (sc->master_result_map);
+ mbc.put_cnt = GNUNET_MIN (mbc.put_cnt, sqms - mbc.skip_cnt);
+ mbc.keyword_offset = 0;
+ if (sc->search_request_map_offset < sqms)
+ GNUNET_assert (mbc.put_cnt > 0);
+ msize += sizeof (struct GNUNET_HashCode) * mbc.put_cnt;
+ GNUNET_CONTAINER_multihashmap_iterate (sc->master_result_map,
+ &build_result_set, &mbc);
+ sm->header.size = htons (msize);
+ GNUNET_assert (sqms >= sc->search_request_map_offset);
+ if (sqms != sc->search_request_map_offset)
{
- GNUNET_assert (GNUNET_FS_uri_test_sks (sc->uri));
- msize = sizeof (struct SearchMessage);
- GNUNET_assert (size >= msize);
- sm = buf;
- memset (sm, 0, msize);
- sm->header.size = htons (sizeof (struct SearchMessage));
- sm->header.type = htons (GNUNET_MESSAGE_TYPE_FS_START_SEARCH);
- sm->type = htonl (GNUNET_DATASTORE_BLOCKTYPE_SBLOCK);
- sm->anonymity_level = htonl (sc->anonymity);
- sm->target = sc->uri->data.sks.namespace;
- identifier = sc->uri->data.sks.identifier;
- GNUNET_CRYPTO_hash (identifier,
- strlen (identifier),
- &key);
- GNUNET_CRYPTO_hash (&key,
- sizeof (GNUNET_HashCode),
- &idh);
- GNUNET_CRYPTO_hash_xor (&idh,
- &sm->target,
- &sm->query);
- }
- GNUNET_CLIENT_receive (sc->client,
- &receive_results,
- sc,
- GNUNET_TIME_UNIT_FOREVER_REL);
+ /* more requesting to be done... */
+ sm->options = htonl (options | SEARCH_MESSAGE_OPTION_CONTINUED);
+ schedule_transmit_search_request (sc);
+ return msize;
+ }
+ sm->options = htonl (options);
+ }
+ GNUNET_CLIENT_receive (sc->client, &receive_results, sc,
+ GNUNET_TIME_UNIT_FOREVER_REL);
return msize;
}
+/**
+ * Schedule the transmission of the (next) search request
+ * to the service.
+ *
+ * @param sc context for the search
+ */
+static void
+schedule_transmit_search_request (struct GNUNET_FS_SearchContext *sc)
+{
+ size_t size;
+ unsigned int sqms;
+ unsigned int fit;
+
+ size = sizeof (struct SearchMessage);
+ sqms =
+ GNUNET_CONTAINER_multihashmap_size (sc->master_result_map) -
+ sc->search_request_map_offset;
+ fit = (GNUNET_SERVER_MAX_MESSAGE_SIZE - 1 - size) / sizeof (struct GNUNET_HashCode);
+ fit = GNUNET_MIN (fit, sqms);
+ size += sizeof (struct GNUNET_HashCode) * fit;
+ GNUNET_CLIENT_notify_transmit_ready (sc->client, size,
+ GNUNET_CONSTANTS_SERVICE_TIMEOUT,
+ GNUNET_NO, &transmit_search_request, sc);
+
+}
+
+
/**
* Reconnect to the FS service and transmit
* our queries NOW.
* @param tc unused
*/
static void
-do_reconnect (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+do_reconnect (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
struct GNUNET_FS_SearchContext *sc = cls;
struct GNUNET_CLIENT_Connection *client;
- size_t size;
-
+
sc->task = GNUNET_SCHEDULER_NO_TASK;
- client = GNUNET_CLIENT_connect (sc->h->sched,
- "fs",
- sc->h->cfg);
+ client = GNUNET_CLIENT_connect ("fs", sc->h->cfg);
if (NULL == client)
- {
- try_reconnect (sc);
- return;
- }
+ {
+ try_reconnect (sc);
+ return;
+ }
sc->client = client;
- if (GNUNET_FS_uri_test_ksk (sc->uri))
- size = sizeof (struct SearchMessage) * sc->uri->data.ksk.keywordCount;
- else
- size = sizeof (struct SearchMessage);
- GNUNET_CLIENT_notify_transmit_ready (client,
- size,
- GNUNET_CONSTANTS_SERVICE_TIMEOUT,
- GNUNET_NO,
- &transmit_search_request,
- sc);
+ sc->search_request_map_offset = 0;
+ sc->keyword_offset = 0;
+ schedule_transmit_search_request (sc);
}
*
* @param sc the search to reconnec
*/
-static void
+static void
try_reconnect (struct GNUNET_FS_SearchContext *sc)
{
if (NULL != sc->client)
- {
- GNUNET_CLIENT_disconnect (sc->client, GNUNET_NO);
- sc->client = NULL;
- }
- sc->task
- = GNUNET_SCHEDULER_add_delayed (sc->h->sched,
- GNUNET_TIME_UNIT_SECONDS,
+ {
+ GNUNET_CLIENT_disconnect (sc->client);
+ sc->client = NULL;
+ }
+ sc->reconnect_backoff = GNUNET_TIME_STD_BACKOFF (sc->reconnect_backoff);
+ sc->task =
+ GNUNET_SCHEDULER_add_delayed (sc->reconnect_backoff,
&do_reconnect,
- sc);
+ sc);
}
* @param uri specifies the search parameters; can be
* a KSK URI or an SKS URI.
* @param anonymity desired level of anonymity
+ * @param options options for the search
* @param cctx initial value for the client context
- * @param parent parent search (for namespace update searches)
+ * @param psearch parent search result (for namespace update searches)
* @return context that can be used to control the search
*/
static struct GNUNET_FS_SearchContext *
search_start (struct GNUNET_FS_Handle *h,
- const struct GNUNET_FS_Uri *uri,
- uint32_t anonymity,
- void *cctx,
- struct GNUNET_FS_SearchContext *parent)
+ const struct GNUNET_FS_Uri *uri,
+ uint32_t anonymity,
+ enum GNUNET_FS_SearchOptions options,
+ void *cctx,
+ struct GNUNET_FS_SearchResult *psearch)
{
struct GNUNET_FS_SearchContext *sc;
- struct GNUNET_CLIENT_Connection *client;
struct GNUNET_FS_ProgressInfo pi;
- size_t size;
- unsigned int i;
- const char *keyword;
- GNUNET_HashCode hc;
- struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pub;
- struct GNUNET_CRYPTO_RsaPrivateKey *pk;
- if (GNUNET_FS_uri_test_ksk (uri))
- {
- size = sizeof (struct SearchMessage) * uri->data.ksk.keywordCount;
- }
- else
- {
- GNUNET_assert (GNUNET_FS_uri_test_sks (uri));
- size = sizeof (struct SearchMessage);
- }
- if (size >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _("Too many keywords specified for a single search."));
- return NULL;
- }
- client = GNUNET_CLIENT_connect (h->sched,
- "fs",
- h->cfg);
- if (NULL == client)
- return NULL;
- sc = GNUNET_malloc (sizeof(struct GNUNET_FS_SearchContext));
+ sc = GNUNET_new (struct GNUNET_FS_SearchContext);
sc->h = h;
+ sc->options = options;
sc->uri = GNUNET_FS_uri_dup (uri);
sc->anonymity = anonymity;
sc->start_time = GNUNET_TIME_absolute_get ();
- sc->client = client;
- sc->parent = parent;
- sc->master_result_map = GNUNET_CONTAINER_multihashmap_create (16);
+ if (NULL != psearch)
+ {
+ sc->psearch_result = psearch;
+ psearch->update_search = sc;
+ }
+ sc->master_result_map = GNUNET_CONTAINER_multihashmap_create (16, GNUNET_NO);
sc->client_info = cctx;
- if (GNUNET_FS_uri_test_ksk (uri))
+ if (GNUNET_OK != GNUNET_FS_search_start_searching_ (sc))
+ {
+ GNUNET_FS_uri_destroy (sc->uri);
+ GNUNET_CONTAINER_multihashmap_destroy (sc->master_result_map);
+ GNUNET_free (sc);
+ return NULL;
+ }
+ GNUNET_FS_search_sync_ (sc);
+ pi.status = GNUNET_FS_STATUS_SEARCH_START;
+ sc->client_info = GNUNET_FS_search_make_status_ (&pi, sc->h, sc);
+ return sc;
+}
+
+
+/**
+ * Build the request and actually initiate the search using the
+ * GNUnet FS service.
+ *
+ * @param sc search context
+ * @return #GNUNET_OK on success, #GNUNET_SYSERR on error
+ */
+int
+GNUNET_FS_search_start_searching_ (struct GNUNET_FS_SearchContext *sc)
+{
+ unsigned int i;
+ const char *keyword;
+ const struct GNUNET_CRYPTO_EcdsaPrivateKey *anon;
+ struct GNUNET_CRYPTO_EcdsaPublicKey anon_pub;
+ struct SearchRequestEntry *sre;
+
+ GNUNET_assert (NULL == sc->client);
+ if (GNUNET_FS_uri_test_ksk (sc->uri))
+ {
+ GNUNET_assert (0 != sc->uri->data.ksk.keywordCount);
+ anon = GNUNET_CRYPTO_ecdsa_key_get_anonymous ();
+ GNUNET_CRYPTO_ecdsa_key_get_public (anon, &anon_pub);
+ sc->requests =
+ GNUNET_malloc (sizeof (struct SearchRequestEntry) *
+ sc->uri->data.ksk.keywordCount);
+ for (i = 0; i < sc->uri->data.ksk.keywordCount; i++)
{
- GNUNET_assert (0 != sc->uri->data.ksk.keywordCount);
- sc->requests = GNUNET_malloc (sizeof (struct SearchRequestEntry) *
- sc->uri->data.ksk.keywordCount);
- for (i=0;i<sc->uri->data.ksk.keywordCount;i++)
- {
- keyword = &sc->uri->data.ksk.keywords[i][1];
- GNUNET_CRYPTO_hash (keyword, strlen (keyword), &hc);
- pk = GNUNET_CRYPTO_rsa_key_create_from_hash (&hc);
- GNUNET_CRYPTO_rsa_key_get_public (pk, &pub);
- GNUNET_CRYPTO_rsa_key_free (pk);
- GNUNET_CRYPTO_hash (&pub,
- sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
- &sc->requests[i].query);
- sc->requests[i].mandatory = (sc->uri->data.ksk.keywords[i][0] == '+');
- if (sc->requests[i].mandatory)
- sc->mandatory_count++;
- sc->requests[i].results = GNUNET_CONTAINER_multihashmap_create (4);
- GNUNET_CRYPTO_hash (keyword,
- strlen (keyword),
- &sc->requests[i].key);
- }
+ keyword = &sc->uri->data.ksk.keywords[i][1];
+ sre = &sc->requests[i];
+ sre->keyword = GNUNET_strdup (keyword);
+ GNUNET_CRYPTO_ecdsa_public_key_derive (&anon_pub,
+ keyword,
+ "fs-ublock",
+ &sre->dpub);
+ GNUNET_CRYPTO_hash (&sre->dpub,
+ sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey),
+ &sre->uquery);
+ sre->mandatory = (sc->uri->data.ksk.keywords[i][0] == '+');
+ if (sre->mandatory)
+ sc->mandatory_count++;
+ sre->results = GNUNET_CONTAINER_multihashmap_create (4, GNUNET_NO);
}
- if (NULL != parent)
+ }
+ sc->client = GNUNET_CLIENT_connect ("fs", sc->h->cfg);
+ if (NULL == sc->client)
+ return GNUNET_SYSERR;
+ schedule_transmit_search_request (sc);
+ return GNUNET_OK;
+}
+
+
+/**
+ * Freeze probes for the given search result.
+ *
+ * @param cls the global FS handle
+ * @param key the key for the search result (unused)
+ * @param value the search result to free
+ * @return #GNUNET_OK
+ */
+static int
+search_result_freeze_probes (void *cls,
+ const struct GNUNET_HashCode *key,
+ void *value)
+{
+ struct GNUNET_FS_SearchResult *sr = value;
+
+ if (NULL != sr->probe_ctx)
+ {
+ GNUNET_FS_download_stop (sr->probe_ctx, GNUNET_YES);
+ sr->probe_ctx = NULL;
+ }
+ if (GNUNET_SCHEDULER_NO_TASK != sr->probe_ping_task)
+ {
+ GNUNET_SCHEDULER_cancel (sr->probe_ping_task);
+ sr->probe_ping_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ if (GNUNET_SCHEDULER_NO_TASK != sr->probe_cancel_task)
+ {
+ GNUNET_SCHEDULER_cancel (sr->probe_cancel_task);
+ sr->probe_cancel_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ if (NULL != sr->update_search)
+ GNUNET_FS_search_pause (sr->update_search);
+ return GNUNET_OK;
+}
+
+
+/**
+ * Resume probes for the given search result.
+ *
+ * @param cls the global FS handle
+ * @param key the key for the search result (unused)
+ * @param value the search result to free
+ * @return #GNUNET_OK
+ */
+static int
+search_result_resume_probes (void *cls,
+ const struct GNUNET_HashCode * key,
+ void *value)
+{
+ struct GNUNET_FS_SearchResult *sr = value;
+
+ GNUNET_FS_search_start_probe_ (sr);
+ if (NULL != sr->update_search)
+ GNUNET_FS_search_continue (sr->update_search);
+ return GNUNET_OK;
+}
+
+
+/**
+ * Signal suspend and free the given search result.
+ *
+ * @param cls the global FS handle
+ * @param key the key for the search result (unused)
+ * @param value the search result to free
+ * @return #GNUNET_OK
+ */
+static int
+search_result_suspend (void *cls,
+ const struct GNUNET_HashCode * key,
+ void *value)
+{
+ struct GNUNET_FS_SearchContext *sc = cls;
+ struct GNUNET_FS_SearchResult *sr = value;
+ struct GNUNET_FS_ProgressInfo pi;
+
+ if (NULL != sr->download)
+ {
+ GNUNET_FS_download_signal_suspend_ (sr->download);
+ sr->download = NULL;
+ }
+ if (NULL != sr->update_search)
+ {
+ GNUNET_FS_search_signal_suspend_ (sr->update_search);
+ sr->update_search = NULL;
+ }
+ GNUNET_FS_search_stop_probe_ (sr);
+ pi.status = GNUNET_FS_STATUS_SEARCH_RESULT_SUSPEND;
+ pi.value.search.specifics.result_suspend.cctx = sr->client_info;
+ pi.value.search.specifics.result_suspend.meta = sr->meta;
+ pi.value.search.specifics.result_suspend.uri = sr->uri;
+ sr->client_info = GNUNET_FS_search_make_status_ (&pi, sc->h, sc);
+ GNUNET_break (NULL == sr->client_info);
+ GNUNET_free_non_null (sr->serialization);
+ GNUNET_FS_uri_destroy (sr->uri);
+ GNUNET_CONTAINER_meta_data_destroy (sr->meta);
+ GNUNET_free_non_null (sr->keyword_bitmap);
+ GNUNET_free (sr);
+ return GNUNET_OK;
+}
+
+
+/**
+ * Create SUSPEND event for the given search operation
+ * and then clean up our state (without stop signal).
+ *
+ * @param cls the `struct GNUNET_FS_SearchContext` to signal for
+ */
+void
+GNUNET_FS_search_signal_suspend_ (void *cls)
+{
+ struct GNUNET_FS_SearchContext *sc = cls;
+ struct GNUNET_FS_ProgressInfo pi;
+ unsigned int i;
+
+ GNUNET_FS_end_top (sc->h, sc->top);
+ GNUNET_CONTAINER_multihashmap_iterate (sc->master_result_map,
+ &search_result_suspend, sc);
+ pi.status = GNUNET_FS_STATUS_SEARCH_SUSPEND;
+ sc->client_info = GNUNET_FS_search_make_status_ (&pi, sc->h, sc);
+ GNUNET_break (NULL == sc->client_info);
+ if (sc->task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel (sc->task);
+ sc->task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ if (NULL != sc->client)
+ {
+ GNUNET_CLIENT_disconnect (sc->client);
+ sc->client = NULL;
+ }
+ GNUNET_CONTAINER_multihashmap_destroy (sc->master_result_map);
+ if (NULL != sc->requests)
+ {
+ GNUNET_assert (GNUNET_FS_uri_test_ksk (sc->uri));
+ for (i = 0; i < sc->uri->data.ksk.keywordCount; i++)
{
- // FIXME: need to track children
- // in parent in case parent is stopped!
+ GNUNET_CONTAINER_multihashmap_destroy (sc->requests[i].results);
+ GNUNET_free (sc->requests[i].keyword);
}
- pi.status = GNUNET_FS_STATUS_SEARCH_START;
- make_search_status (&pi, sc);
- sc->client_info = h->upcb (h->upcb_cls,
- &pi);
- GNUNET_CLIENT_notify_transmit_ready (client,
- size,
- GNUNET_CONSTANTS_SERVICE_TIMEOUT,
- GNUNET_NO,
- &transmit_search_request,
- sc);
- return sc;
+ }
+ GNUNET_free_non_null (sc->requests);
+ GNUNET_free_non_null (sc->emsg);
+ GNUNET_FS_uri_destroy (sc->uri);
+ GNUNET_free_non_null (sc->serialization);
+ GNUNET_free (sc);
}
* @param uri specifies the search parameters; can be
* a KSK URI or an SKS URI.
* @param anonymity desired level of anonymity
+ * @param options options for the search
* @param cctx initial value for the client context
* @return context that can be used to control the search
*/
struct GNUNET_FS_SearchContext *
GNUNET_FS_search_start (struct GNUNET_FS_Handle *h,
- const struct GNUNET_FS_Uri *uri,
- uint32_t anonymity,
- void *cctx)
+ const struct GNUNET_FS_Uri *uri, uint32_t anonymity,
+ enum GNUNET_FS_SearchOptions options, void *cctx)
{
- return search_start (h, uri, anonymity, cctx, NULL);
+ struct GNUNET_FS_SearchContext *ret;
+
+ ret = search_start (h, uri, anonymity, options, cctx, NULL);
+ if (NULL == ret)
+ return NULL;
+ ret->top = GNUNET_FS_make_top (h, &GNUNET_FS_search_signal_suspend_, ret);
+ return ret;
}
/**
- * Pause search.
+ * Pause search.
*
* @param sc context for the search that should be paused
*/
-void
+void
GNUNET_FS_search_pause (struct GNUNET_FS_SearchContext *sc)
{
struct GNUNET_FS_ProgressInfo pi;
- if (sc->task != GNUNET_SCHEDULER_NO_TASK)
- GNUNET_SCHEDULER_cancel (sc->h->sched,
- sc->task);
- sc->task = GNUNET_SCHEDULER_NO_TASK;
+ if (GNUNET_SCHEDULER_NO_TASK != sc->task)
+ {
+ GNUNET_SCHEDULER_cancel (sc->task);
+ sc->task = GNUNET_SCHEDULER_NO_TASK;
+ }
if (NULL != sc->client)
- GNUNET_CLIENT_disconnect (sc->client, GNUNET_NO);
+ GNUNET_CLIENT_disconnect (sc->client);
sc->client = NULL;
- // FIXME: make persistent!
- // FIXME: should this freeze all active probes?
+ GNUNET_FS_search_sync_ (sc);
+ GNUNET_CONTAINER_multihashmap_iterate (sc->master_result_map,
+ &search_result_freeze_probes, sc);
pi.status = GNUNET_FS_STATUS_SEARCH_PAUSED;
- make_search_status (&pi, sc);
- sc->client_info = sc->h->upcb (sc->h->upcb_cls,
- &pi);
+ sc->client_info = GNUNET_FS_search_make_status_ (&pi, sc->h, sc);
}
*
* @param sc context for the search that should be resumed
*/
-void
+void
GNUNET_FS_search_continue (struct GNUNET_FS_SearchContext *sc)
{
struct GNUNET_FS_ProgressInfo pi;
- GNUNET_assert (sc->client == NULL);
- GNUNET_assert (sc->task == GNUNET_SCHEDULER_NO_TASK);
+ GNUNET_assert (NULL == sc->client);
+ GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == sc->task);
do_reconnect (sc, NULL);
- // FIXME: make persistent!
+ GNUNET_FS_search_sync_ (sc);
pi.status = GNUNET_FS_STATUS_SEARCH_CONTINUED;
- make_search_status (&pi, sc);
- sc->client_info = sc->h->upcb (sc->h->upcb_cls,
- &pi);
+ sc->client_info = GNUNET_FS_search_make_status_ (&pi, sc->h, sc);
+ GNUNET_CONTAINER_multihashmap_iterate (sc->master_result_map,
+ &search_result_resume_probes, sc);
}
/**
- * Free the given search result.
+ * Signal stop for the given search result.
*
* @param cls the global FS handle
* @param key the key for the search result (unused)
* @param value the search result to free
- * @return GNUNET_OK
+ * @return #GNUNET_OK
*/
static int
-search_result_free (void *cls,
- const GNUNET_HashCode * key,
- void *value)
+search_result_stop (void *cls,
+ const struct GNUNET_HashCode *key,
+ void *value)
{
struct GNUNET_FS_SearchContext *sc = cls;
- struct GNUNET_FS_Handle *h = sc->h;
- struct SearchResult *sr = value;
+ struct GNUNET_FS_SearchResult *sr = value;
struct GNUNET_FS_ProgressInfo pi;
+ GNUNET_FS_search_stop_probe_ (sr);
+ if (NULL != sr->download)
+ {
+ sr->download->search = NULL;
+ sr->download->top =
+ GNUNET_FS_make_top (sr->download->h,
+ &GNUNET_FS_download_signal_suspend_, sr->download);
+ if (NULL != sr->download->serialization)
+ {
+ GNUNET_FS_remove_sync_file_ (sc->h, GNUNET_FS_SYNC_PATH_CHILD_DOWNLOAD,
+ sr->download->serialization);
+ GNUNET_free (sr->download->serialization);
+ sr->download->serialization = NULL;
+ }
+ pi.status = GNUNET_FS_STATUS_DOWNLOAD_LOST_PARENT;
+ GNUNET_FS_download_make_status_ (&pi, sr->download);
+ GNUNET_FS_download_sync_ (sr->download);
+ sr->download = NULL;
+ }
pi.status = GNUNET_FS_STATUS_SEARCH_RESULT_STOPPED;
- make_search_status (&pi, sc);
pi.value.search.specifics.result_stopped.cctx = sr->client_info;
pi.value.search.specifics.result_stopped.meta = sr->meta;
pi.value.search.specifics.result_stopped.uri = sr->uri;
- sr->client_info = h->upcb (h->upcb_cls,
- &pi);
+ sr->client_info = GNUNET_FS_search_make_status_ (&pi, sr->h, sc);
+ return GNUNET_OK;
+}
+
+
+/**
+ * Free the given search result.
+ *
+ * @param cls the global FS handle
+ * @param key the key for the search result (unused)
+ * @param value the search result to free
+ * @return #GNUNET_OK
+ */
+static int
+search_result_free (void *cls,
+ const struct GNUNET_HashCode *key,
+ void *value)
+{
+ struct GNUNET_FS_SearchResult *sr = value;
+
+ if (NULL != sr->update_search)
+ {
+ GNUNET_FS_search_stop (sr->update_search);
+ GNUNET_assert (NULL == sr->update_search);
+ }
+ GNUNET_break (NULL == sr->probe_ctx);
+ GNUNET_break (GNUNET_SCHEDULER_NO_TASK == sr->probe_cancel_task);
+ GNUNET_break (GNUNET_SCHEDULER_NO_TASK == sr->probe_ping_task);
GNUNET_break (NULL == sr->client_info);
-
+ GNUNET_free_non_null (sr->serialization);
GNUNET_FS_uri_destroy (sr->uri);
GNUNET_CONTAINER_meta_data_destroy (sr->meta);
- if (sr->probe_ctx != NULL)
- {
- GNUNET_FS_download_stop (sr->probe_ctx, GNUNET_YES);
- h->active_probes--;
- /* FIXME: trigger starting of new
- probes here!? Maybe not -- could
- cause new probes to be immediately
- stopped again... */
- }
- if (sr->probe_cancel_task != GNUNET_SCHEDULER_NO_TASK)
- {
- GNUNET_SCHEDULER_cancel (h->sched,
- sr->probe_cancel_task);
- }
+ GNUNET_free_non_null (sr->keyword_bitmap);
GNUNET_free (sr);
return GNUNET_OK;
}
*
* @param sc context for the search that should be stopped
*/
-void
+void
GNUNET_FS_search_stop (struct GNUNET_FS_SearchContext *sc)
{
struct GNUNET_FS_ProgressInfo pi;
unsigned int i;
- // FIXME: make un-persistent!
- if (NULL != sc->parent)
- {
- // FIXME: need to untrack sc
- // in parent!
- }
+ if (NULL != sc->top)
+ GNUNET_FS_end_top (sc->h, sc->top);
GNUNET_CONTAINER_multihashmap_iterate (sc->master_result_map,
- &search_result_free,
- sc);
+ &search_result_stop, sc);
+ if (NULL != sc->psearch_result)
+ sc->psearch_result->update_search = NULL;
+ if (NULL != sc->serialization)
+ {
+ GNUNET_FS_remove_sync_file_ (sc->h,
+ (sc->psearch_result !=
+ NULL) ? GNUNET_FS_SYNC_PATH_CHILD_SEARCH :
+ GNUNET_FS_SYNC_PATH_MASTER_SEARCH,
+ sc->serialization);
+ GNUNET_FS_remove_sync_dir_ (sc->h,
+ (sc->psearch_result !=
+ NULL) ? GNUNET_FS_SYNC_PATH_CHILD_SEARCH :
+ GNUNET_FS_SYNC_PATH_MASTER_SEARCH,
+ sc->serialization);
+ GNUNET_free (sc->serialization);
+ }
pi.status = GNUNET_FS_STATUS_SEARCH_STOPPED;
- make_search_status (&pi, sc);
- sc->client_info = sc->h->upcb (sc->h->upcb_cls,
- &pi);
+ sc->client_info = GNUNET_FS_search_make_status_ (&pi, sc->h, sc);
GNUNET_break (NULL == sc->client_info);
- if (sc->task != GNUNET_SCHEDULER_NO_TASK)
- GNUNET_SCHEDULER_cancel (sc->h->sched,
- sc->task);
+ if (GNUNET_SCHEDULER_NO_TASK != sc->task)
+ GNUNET_SCHEDULER_cancel (sc->task);
if (NULL != sc->client)
- GNUNET_CLIENT_disconnect (sc->client, GNUNET_NO);
+ GNUNET_CLIENT_disconnect (sc->client);
+ GNUNET_CONTAINER_multihashmap_iterate (sc->master_result_map,
+ &search_result_free, sc);
GNUNET_CONTAINER_multihashmap_destroy (sc->master_result_map);
- for (i=0;i<sc->uri->data.ksk.keywordCount;i++)
- GNUNET_CONTAINER_multihashmap_destroy (sc->requests[i].results);
+ if (NULL != sc->requests)
+ {
+ GNUNET_assert (GNUNET_FS_uri_test_ksk (sc->uri));
+ for (i = 0; i < sc->uri->data.ksk.keywordCount; i++)
+ GNUNET_CONTAINER_multihashmap_destroy (sc->requests[i].results);
+ }
GNUNET_free_non_null (sc->requests);
+ GNUNET_free_non_null (sc->emsg);
GNUNET_FS_uri_destroy (sc->uri);
GNUNET_free (sc);
}
projects / oweals / gnunet.git / blobdiff