/**
* Store content in DHT.
*
* @param cls closure
* @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_dht_put_content (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 PutOperator *po = cls;
po->dht_qe = NULL;
if (key == NULL)
{
po->zero_anonymity_count_estimate = po->current_offset - 1;
po->current_offset = 0;
po->dht_task = GNUNET_SCHEDULER_add_now (&delay_dht_put_task, po);
return;
}
po->zero_anonymity_count_estimate =
GNUNET_MAX (po->current_offset, po->zero_anonymity_count_estimate);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Retrieved block `%s' of type %u for DHT PUT\n", GNUNET_h2s (key),
type);
po->dht_put = GNUNET_DHT_put (GSF_dht, key, DEFAULT_PUT_REPLICATION,
GNUNET_DHT_RO_DEMULTIPLEX_EVERYWHERE, type, size, data,
expiration, GNUNET_TIME_UNIT_FOREVER_REL,
&delay_dht_put_blocks, po);
}
static void
run (void *cls,
const struct GNUNET_CONFIGURATION_Handle *cfg,
struct GNUNET_TESTING_Peer *peer)
{
struct GNUNET_HashCode hash;
char *data;
size_t data_size = 42;
GNUNET_assert (ok == 1);
OKPP;
die_task =
GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply
(GNUNET_TIME_UNIT_MINUTES, 1), &end_badly,
NULL);
memset (&hash, 42, sizeof (struct GNUNET_HashCode));
data = GNUNET_malloc (data_size);
memset (data, 43, data_size);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Called test_put!\n");
dht_handle = GNUNET_DHT_connect (cfg, 100);
GNUNET_assert (dht_handle != NULL);
GNUNET_DHT_put (dht_handle, &hash, 1, GNUNET_DHT_RO_NONE,
GNUNET_BLOCK_TYPE_TEST, data_size, data,
GNUNET_TIME_relative_to_absolute (TOTAL_TIMEOUT),
&test_get, NULL);
GNUNET_free (data);
}
/**
* Periodically announce self id in the DHT
*
* @param cls closure
* @param tc task context
*/
static void
announce_id (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
struct GNUNET_HashCode phash;
const struct GNUNET_HELLO_Message *hello;
size_t size;
struct GNUNET_TIME_Absolute expiration;
struct GNUNET_TIME_Relative retry_time;
if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
{
announce_id_task = NULL;
return;
}
LOG (GNUNET_ERROR_TYPE_DEBUG, "Announce ID\n");
/* TODO
* - Set data expiration in function of X
* - Adapt X to churn
*/
hello = GCH_get_mine ();
if (NULL == hello || (size = GNUNET_HELLO_size (hello)) == 0)
{
/* Peerinfo gave us no hello yet, try again in a second. */
announce_id_task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_SECONDS,
&announce_id, cls);
LOG (GNUNET_ERROR_TYPE_DEBUG, " no hello, waiting!\n");
GNUNET_STATISTICS_update (stats, "# DHT announce skipped (no hello)",
1, GNUNET_NO);
return;
}
expiration = GNUNET_HELLO_get_last_expiration (hello);
retry_time = GNUNET_TIME_absolute_get_remaining (expiration);
LOG (GNUNET_ERROR_TYPE_DEBUG, "Hello %p size: %u\n", hello, size);
GNUNET_STATISTICS_update (stats, "# DHT announce",
1, GNUNET_NO);
memset (&phash, 0, sizeof (phash));
memcpy (&phash, &my_full_id, sizeof (my_full_id));
GNUNET_DHT_put (dht_handle, /* DHT handle */
&phash, /* Key to use */
dht_replication_level, /* Replication level */
GNUNET_DHT_RO_RECORD_ROUTE
| GNUNET_DHT_RO_DEMULTIPLEX_EVERYWHERE, /* DHT options */
GNUNET_BLOCK_TYPE_DHT_HELLO, /* Block type */
size, /* Size of the data */
(const char *) hello, /* Data itself */
expiration, /* Data expiration */
retry_time, /* Retry time */
NULL, /* Continuation */
NULL); /* Continuation closure */
announce_id_task =
GNUNET_SCHEDULER_add_delayed (id_announce_time, &announce_id, cls);
}
/**
* Main function that will be run by the scheduler.
*
* @param cls closure
* @param args remaining command-line arguments
* @param cfgfile name of the configuration file used (for saving, can be NULL!)
* @param c configuration
*/
static void
run (void *cls, char *const *args, const char *cfgfile,
const struct GNUNET_CONFIGURATION_Handle *c)
{
struct GNUNET_TIME_Relative timeout;
struct GNUNET_TIME_Absolute expiration;
GNUNET_HashCode key;
cfg = c;
if ((query_key == NULL) || (data == NULL))
{
FPRINTF (stderr, "%s", _("Must provide KEY and DATA for DHT put!\n"));
ret = 1;
return;
}
dht_handle = GNUNET_DHT_connect (cfg, 1);
if (dht_handle == NULL)
{
FPRINTF (stderr, _("Could not connect to %s service!\n"), "DHT");
ret = 1;
return;
}
else if (verbose)
FPRINTF (stderr, _("Connected to %s service!\n"), "DHT");
if (query_type == GNUNET_BLOCK_TYPE_ANY) /* Type of data not set */
query_type = GNUNET_BLOCK_TYPE_TEST;
GNUNET_CRYPTO_hash (query_key, strlen (query_key), &key);
timeout =
GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, timeout_request);
expiration =
GNUNET_TIME_relative_to_absolute (GNUNET_TIME_relative_multiply
(GNUNET_TIME_UNIT_SECONDS,
expiration_seconds));
if (verbose)
FPRINTF (stderr, _("Issuing put request for `%s' with data `%s'!\n"),
query_key, data);
GNUNET_DHT_put (dht_handle, &key, replication, GNUNET_DHT_RO_NONE, query_type,
strlen (data), data, expiration, timeout, &message_sent_cont,
NULL);
}
/**
* Function used to put all records successively into the DHT.
*
* @param cls the closure (NULL)
* @param key the public key of the authority (ours)
* @param expiration lifetime of the namestore entry
* @param name the name of the records
* @param rd_count the number of records in data
* @param rd the record data
* @param signature the signature for the record data
*/
static void
put_gns_record(void *cls,
const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *key,
struct GNUNET_TIME_Absolute expiration,
const char *name,
unsigned int rd_count,
const struct GNUNET_NAMESTORE_RecordData *rd,
const struct GNUNET_CRYPTO_RsaSignature *signature)
{
struct GNSNameRecordBlock *nrb;
struct GNUNET_CRYPTO_ShortHashCode name_hash;
struct GNUNET_CRYPTO_ShortHashCode zhash;
GNUNET_HashCode xor_hash;
GNUNET_HashCode name_hash_double;
GNUNET_HashCode zone_hash_double;
uint32_t rd_payload_length;
char* nrb_data = NULL;
size_t namelen;
/* we're done */
if (NULL == name)
{
GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
"Zone iteration finished. Rescheduling put in %ds\n",
dht_max_update_interval);
zone_update_taskid = GNUNET_SCHEDULER_add_delayed (
GNUNET_TIME_relative_multiply(
GNUNET_TIME_UNIT_SECONDS,
dht_max_update_interval
),
&update_zone_dht_start,
NULL);
return;
}
namelen = strlen(name) + 1;
if (signature == NULL)
{
GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
"No signature for %s record data provided! Skipping...\n",
name);
zone_update_taskid = GNUNET_SCHEDULER_add_now (&update_zone_dht_next,
NULL);
return;
}
GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
"Putting records for %s into the DHT\n", name);
rd_payload_length = GNUNET_NAMESTORE_records_get_size (rd_count, rd);
nrb = GNUNET_malloc(rd_payload_length + namelen
+ sizeof(struct GNSNameRecordBlock));
nrb->signature = *signature;
nrb->public_key = *key;
nrb->rd_count = htonl(rd_count);
memcpy(&nrb[1], name, namelen);
nrb_data = (char*)&nrb[1];
nrb_data += namelen;
rd_payload_length += sizeof(struct GNSNameRecordBlock) + namelen;
if (-1 == GNUNET_NAMESTORE_records_serialize (rd_count,
rd,
rd_payload_length,
nrb_data))
{
GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
"Record serialization failed! Skipping...\n");
GNUNET_free(nrb);
zone_update_taskid = GNUNET_SCHEDULER_add_now (&update_zone_dht_next,
NULL);
return;
}
/*
* calculate DHT key: H(name) xor H(pubkey)
*/
GNUNET_CRYPTO_short_hash(key,
sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
&zhash);
GNUNET_CRYPTO_short_hash(name, strlen(name), &name_hash);
GNUNET_CRYPTO_short_hash_double (&name_hash, &name_hash_double);
GNUNET_CRYPTO_short_hash_double (&zhash, &zone_hash_double);
GNUNET_CRYPTO_hash_xor(&zone_hash_double, &name_hash_double, &xor_hash);
GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
"zone identity: %s\n", GNUNET_h2s (&zone_hash_double));
GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
"putting records for %s under key: %s with size %d\n",
name, GNUNET_h2s (&xor_hash), rd_payload_length);
GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
"DHT req to %d\n", DHT_OPERATION_TIMEOUT.rel_value);
/* FIXME: keep return value to possibly cancel? */
GNUNET_DHT_put (dht_handle, &xor_hash,
DHT_GNS_REPLICATION_LEVEL,
GNUNET_DHT_RO_NONE,
GNUNET_BLOCK_TYPE_GNS_NAMERECORD,
rd_payload_length,
(char*)nrb,
expiration,
DHT_OPERATION_TIMEOUT,
&record_dht_put,
NULL); //cls for cont
num_public_records++;
/**
* Reschedule periodic put
*/
zone_update_taskid = GNUNET_SCHEDULER_add_delayed (record_put_interval,
&update_zone_dht_next,
NULL);
GNUNET_free(nrb);
}
/**
* Regex callback iterator to store own service description in the DHT.
*
* @param cls closure.
* @param key hash for current state.
* @param proof proof for current state.
* @param accepting #GNUNET_YES if this is an accepting state, #GNUNET_NO if not.
* @param num_edges number of edges leaving current state.
* @param edges edges leaving current state.
*/
static void
regex_iterator (void *cls,
const struct GNUNET_HashCode *key,
const char *proof,
int accepting,
unsigned int num_edges,
const struct REGEX_BLOCK_Edge *edges)
{
struct REGEX_INTERNAL_Announcement *h = cls;
struct RegexBlock *block;
size_t size;
unsigned int i;
LOG (GNUNET_ERROR_TYPE_INFO,
"DHT PUT for state %s with proof `%s' and %u edges:\n",
GNUNET_h2s (key),
proof,
num_edges);
for (i = 0; i < num_edges; i++)
{
LOG (GNUNET_ERROR_TYPE_INFO,
"Edge %u `%s' towards %s\n",
i,
edges[i].label,
GNUNET_h2s (&edges[i].destination));
}
if (GNUNET_YES == accepting)
{
struct RegexAcceptBlock ab;
LOG (GNUNET_ERROR_TYPE_INFO,
"State %s is accepting, putting own id\n",
GNUNET_h2s (key));
size = sizeof (struct RegexAcceptBlock);
ab.purpose.size = ntohl (sizeof (struct GNUNET_CRYPTO_EccSignaturePurpose) +
sizeof (struct GNUNET_TIME_AbsoluteNBO) +
sizeof (struct GNUNET_HashCode));
ab.purpose.purpose = ntohl (GNUNET_SIGNATURE_PURPOSE_REGEX_ACCEPT);
ab.expiration_time = GNUNET_TIME_absolute_hton (GNUNET_TIME_relative_to_absolute (GNUNET_CONSTANTS_DHT_MAX_EXPIRATION));
ab.key = *key;
GNUNET_CRYPTO_eddsa_key_get_public (h->priv,
&ab.peer.public_key);
GNUNET_assert (GNUNET_OK ==
GNUNET_CRYPTO_eddsa_sign (h->priv,
&ab.purpose,
&ab.signature));
GNUNET_STATISTICS_update (h->stats, "# regex accepting blocks stored",
1, GNUNET_NO);
GNUNET_STATISTICS_update (h->stats, "# regex accepting block bytes stored",
sizeof (struct RegexAcceptBlock), GNUNET_NO);
(void)
GNUNET_DHT_put (h->dht, key,
DHT_REPLICATION,
DHT_OPT | GNUNET_DHT_RO_RECORD_ROUTE,
GNUNET_BLOCK_TYPE_REGEX_ACCEPT,
size,
&ab,
GNUNET_TIME_relative_to_absolute (DHT_TTL),
NULL, NULL);
}
block = REGEX_BLOCK_create (proof,
num_edges, edges,
accepting,
&size);
(void)
GNUNET_DHT_put (h->dht, key,
DHT_REPLICATION,
DHT_OPT,
GNUNET_BLOCK_TYPE_REGEX,
size, block,
GNUNET_TIME_relative_to_absolute (DHT_TTL),
NULL, NULL);
GNUNET_STATISTICS_update (h->stats,
"# regex blocks stored",
1, GNUNET_NO);
GNUNET_STATISTICS_update (h->stats,
"# regex block bytes stored",
size, GNUNET_NO);
GNUNET_free (block);
}
/**
* Periodically announce self id in the DHT
*
* @param cls closure
*/
static void
announce_id (void *cls)
{
struct GNUNET_HashCode phash;
const struct GNUNET_HELLO_Message *hello;
size_t size;
struct GNUNET_TIME_Absolute expiration;
struct GNUNET_TIME_Relative next_put;
hello = GCH_get_mine ();
size = (NULL != hello) ? GNUNET_HELLO_size (hello) : 0;
if (0 == size)
{
expiration = GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (),
announce_delay);
announce_delay = GNUNET_TIME_STD_BACKOFF (announce_delay);
}
else
{
expiration = GNUNET_HELLO_get_last_expiration (hello);
announce_delay = GNUNET_TIME_UNIT_SECONDS;
}
/* Call again in id_announce_time, unless HELLO expires first,
* but wait at least 1s. */
next_put
= GNUNET_TIME_absolute_get_remaining (expiration);
next_put
= GNUNET_TIME_relative_min (next_put,
id_announce_time);
next_put
= GNUNET_TIME_relative_max (next_put,
GNUNET_TIME_UNIT_SECONDS);
announce_id_task
= GNUNET_SCHEDULER_add_delayed (next_put,
&announce_id,
cls);
GNUNET_STATISTICS_update (stats,
"# DHT announce",
1,
GNUNET_NO);
memset (&phash,
0,
sizeof (phash));
GNUNET_memcpy (&phash,
&my_full_id,
sizeof (my_full_id));
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Announcing my HELLO (%u bytes) in the DHT\n",
size);
GNUNET_DHT_put (dht_handle, /* DHT handle */
&phash, /* Key to use */
dht_replication_level, /* Replication level */
GNUNET_DHT_RO_RECORD_ROUTE
| GNUNET_DHT_RO_DEMULTIPLEX_EVERYWHERE, /* DHT options */
GNUNET_BLOCK_TYPE_DHT_HELLO, /* Block type */
size, /* Size of the data */
(const char *) hello, /* Data itself */
expiration, /* Data expiration */
NULL, /* Continuation */
NULL); /* Continuation closure */
}
