static void
run_continuation (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
struct CpsRunContext *crc = cls;
ok = (int) crc->phase;
switch (crc->phase)
{
case RP_PUT:
#if VERBOSE
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Executing `%s' number %u\n", "PUT",
crc->i);
#endif
GNUNET_CRYPTO_hash (&crc->i, sizeof (int), &crc->key);
GNUNET_DATASTORE_put (datastore, 0, &crc->key, get_size (crc->i),
get_data (crc->i), get_type (crc->i),
get_priority (crc->i), get_anonymity (crc->i), 0,
get_expiration (crc->i), 1, 1, TIMEOUT,
&check_success, crc);
crc->i++;
if (crc->i == ITERATIONS)
{
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"Sleeping to give datastore time to clean up\n");
sleep (1);
crc->phase = RP_GET;
crc->i--;
}
break;
case RP_GET:
#if VERBOSE
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Executing `%s' number %u\n", "GET",
crc->i);
#endif
GNUNET_CRYPTO_hash (&crc->i, sizeof (int), &crc->key);
GNUNET_DATASTORE_get_key (datastore, crc->offset++, &crc->key,
get_type (crc->i), 1, 1, TIMEOUT, &check_value,
crc);
break;
case RP_GET_FAIL:
#if VERBOSE
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Executing `%s' number %u\n", "GET(f)",
crc->i);
#endif
GNUNET_CRYPTO_hash (&crc->i, sizeof (int), &crc->key);
GNUNET_DATASTORE_get_key (datastore, crc->offset++, &crc->key,
get_type (crc->i), 1, 1, TIMEOUT, &check_nothing,
crc);
break;
case RP_DONE:
GNUNET_assert (0 == crc->i);
#if VERBOSE
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Finished, disconnecting\n");
#endif
GNUNET_DATASTORE_disconnect (datastore, GNUNET_YES);
GNUNET_free (crc);
ok = 0;
}
}
/**
* If necessary, connect to the datastore and remove the KBlocks.
*
* @param uc context for the unindex operation.
*/
void
GNUNET_FS_unindex_do_remove_kblocks_ (struct GNUNET_FS_UnindexContext *uc)
{
const char *keyword;
const struct GNUNET_CRYPTO_EcdsaPrivateKey *anon;
struct GNUNET_CRYPTO_EcdsaPublicKey anon_pub;
struct GNUNET_CRYPTO_EcdsaPublicKey dpub;
if (NULL == uc->dsh)
uc->dsh = GNUNET_DATASTORE_connect (uc->h->cfg);
if (NULL == uc->dsh)
{
uc->state = UNINDEX_STATE_ERROR;
uc->emsg = GNUNET_strdup (_("Failed to connect to `datastore' service."));
GNUNET_FS_unindex_sync_ (uc);
signal_unindex_error (uc);
return;
}
if ( (NULL == uc->ksk_uri) ||
(uc->ksk_offset >= uc->ksk_uri->data.ksk.keywordCount) )
{
unindex_finish (uc);
return;
}
anon = GNUNET_CRYPTO_ecdsa_key_get_anonymous ();
GNUNET_CRYPTO_ecdsa_key_get_public (anon,
&anon_pub);
keyword = &uc->ksk_uri->data.ksk.keywords[uc->ksk_offset][1];
GNUNET_CRYPTO_ecdsa_public_key_derive (&anon_pub,
keyword,
"fs-ublock",
&dpub);
GNUNET_CRYPTO_hash (&dpub,
sizeof (dpub),
&uc->uquery);
uc->dqe = GNUNET_DATASTORE_get_key (uc->dsh,
uc->roff++,
&uc->uquery,
GNUNET_BLOCK_TYPE_FS_UBLOCK,
0 /* priority */,
1 /* queue size */,
GNUNET_TIME_UNIT_FOREVER_REL,
&process_kblock_for_unindex,
uc);
}
/**
* Functions with this signature are called whenever a
* complete query message is received.
*
* Do not call GNUNET_SERVER_mst_destroy in callback
*
* @param cls closure with the 'struct StreamClient'
* @param client identification of the client, NULL
* @param message the actual message
* @return GNUNET_OK on success, GNUNET_SYSERR to stop further processing
*/
static int
request_cb (void *cls,
void *client,
const struct GNUNET_MessageHeader *message)
{
struct StreamClient *sc = cls;
const struct StreamQueryMessage *sqm;
switch (ntohs (message->type))
{
case GNUNET_MESSAGE_TYPE_FS_STREAM_QUERY:
if (sizeof (struct StreamQueryMessage) !=
ntohs (message->size))
{
GNUNET_break_op (0);
terminate_stream_async (sc);
return GNUNET_SYSERR;
}
sqm = (const struct StreamQueryMessage *) message;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Received query for `%s' via stream\n",
GNUNET_h2s (&sqm->query));
GNUNET_STATISTICS_update (GSF_stats,
gettext_noop ("# queries received via stream"), 1,
GNUNET_NO);
refresh_timeout_task (sc);
sc->qe = GNUNET_DATASTORE_get_key (GSF_dsh,
0,
&sqm->query,
ntohl (sqm->type),
0 /* priority */,
GSF_datastore_queue_size,
GNUNET_TIME_UNIT_FOREVER_REL,
&handle_datastore_reply, sc);
if (NULL == sc->qe)
continue_reading (sc);
return GNUNET_OK;
default:
GNUNET_break_op (0);
terminate_stream_async (sc);
return GNUNET_SYSERR;
}
}
/**
* Function called from datastore with result from us looking for
* a UBlock. There are four cases:
* 1) no result, means we move on to the next keyword
* 2) UID is the same as the first UID, means we move on to next keyword
* 3) UBlock for a different CHK, means we keep looking for more
* 4) UBlock is for our CHK, means we remove the block and then move
* on to the next keyword
*
* @param cls the 'struct GNUNET_FS_UnindexContext *'
* @param key key for the content
* @param size number of bytes in data
* @param data content stored
* @param type type of the content
* @param priority priority of the content
* @param anonymity anonymity-level for the content
* @param expiration expiration time for the content
* @param uid unique identifier for the datum;
* maybe 0 if no unique identifier is available
*/
static void
process_kblock_for_unindex (void *cls,
const struct GNUNET_HashCode *key,
size_t size,
const void *data,
enum GNUNET_BLOCK_Type type,
uint32_t priority,
uint32_t anonymity,
struct GNUNET_TIME_Absolute expiration,
uint64_t uid)
{
struct GNUNET_FS_UnindexContext *uc = cls;
const struct UBlock *ub;
struct GNUNET_FS_Uri *chk_uri;
struct GNUNET_HashCode query;
struct GNUNET_HashCode dh;
uc->dqe = NULL;
if (NULL == data)
{
/* no result */
GNUNET_CONTAINER_multihashmap_clear (uc->seen_dh);
uc->ksk_offset++;
GNUNET_FS_unindex_do_remove_kblocks_ (uc);
return;
}
GNUNET_CRYPTO_hash (data,
size,
&dh);
if (GNUNET_YES ==
GNUNET_CONTAINER_multihashmap_contains (uc->seen_dh,
&dh))
{
GNUNET_CONTAINER_multihashmap_clear (uc->seen_dh);
uc->ksk_offset++;
GNUNET_FS_unindex_do_remove_kblocks_ (uc);
return;
}
GNUNET_assert (GNUNET_OK ==
GNUNET_CONTAINER_multihashmap_put (uc->seen_dh,
&dh,
uc,
GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
GNUNET_assert (GNUNET_BLOCK_TYPE_FS_UBLOCK == type);
if (size < sizeof (struct UBlock))
{
GNUNET_break (0);
goto get_next;
}
ub = data;
GNUNET_CRYPTO_hash (&ub->verification_key,
sizeof (ub->verification_key),
&query);
if (0 != memcmp (&query,
key,
sizeof (struct GNUNET_HashCode)))
{
/* result does not match our keyword, skip */
goto get_next;
}
{
char pt[size - sizeof (struct UBlock)];
struct GNUNET_CRYPTO_EcdsaPublicKey anon_pub;
const char *keyword;
GNUNET_CRYPTO_ecdsa_key_get_public (GNUNET_CRYPTO_ecdsa_key_get_anonymous (),
&anon_pub);
keyword = &uc->ksk_uri->data.ksk.keywords[uc->ksk_offset][1];
GNUNET_FS_ublock_decrypt_ (&ub[1], size - sizeof (struct UBlock),
&anon_pub,
keyword,
pt);
if (NULL == memchr (&pt[1], 0, sizeof (pt) - 1))
{
GNUNET_break_op (0); /* malformed UBlock */
goto get_next;
}
chk_uri = GNUNET_FS_uri_parse (&pt[1], NULL);
if (NULL == chk_uri)
{
GNUNET_break_op (0); /* malformed UBlock */
goto get_next;
}
}
if (0 != memcmp (&uc->chk,
&chk_uri->data.chk.chk,
sizeof (struct ContentHashKey)))
{
/* different CHK, ignore */
GNUNET_FS_uri_destroy (chk_uri);
goto get_next;
}
GNUNET_FS_uri_destroy (chk_uri);
/* matches! */
uc->dqe = GNUNET_DATASTORE_remove (uc->dsh,
key,
size,
data,
0 /* priority */,
1 /* queue size */,
GNUNET_TIME_UNIT_FOREVER_REL,
&continue_after_remove,
uc);
return;
get_next:
uc->dqe = GNUNET_DATASTORE_get_key (uc->dsh,
uc->roff++,
&uc->uquery,
GNUNET_BLOCK_TYPE_FS_UBLOCK,
0 /* priority */,
1 /* queue size */,
GNUNET_TIME_UNIT_FOREVER_REL,
&process_kblock_for_unindex,
uc);
}
