/*
This file is part of GNUnet.
- (C) 2011-2013 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2011-2013 GNUnet e.V.
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
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.
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
*/
/**
* @file gns/gnunet-service-gns.c
- * @brief GNUnet GNS service
+ * @brief GNU Name System (main service)
* @author Martin Schanzenbach
* @author Christian Grothoff
*/
#include "platform.h"
#include "gnunet_util_lib.h"
-#include "gnunet_transport_service.h"
#include "gnunet_dns_service.h"
#include "gnunet_dnsparser_lib.h"
#include "gnunet_dht_service.h"
+#include "gnunet_namecache_service.h"
#include "gnunet_namestore_service.h"
+#include "gnunet_identity_service.h"
#include "gnunet_gns_service.h"
#include "gnunet_statistics_service.h"
#include "gns.h"
struct GNS_ResolverHandle *lookup;
/**
- * request id
+ * request id
*/
uint32_t request_id;
};
+/**
+ * Handle for DHT PUT activity triggered from the namestore monitor.
+ */
+struct MonitorActivity
+{
+ /**
+ * Kept in a DLL.
+ */
+ struct MonitorActivity *next;
+
+ /**
+ * Kept in a DLL.
+ */
+ struct MonitorActivity *prev;
+
+ /**
+ * Handle for the DHT PUT operation.
+ */
+ struct GNUNET_DHT_PutHandle *ph;
+};
+
+
/**
* Our handle to the DHT
*/
*/
static struct GNUNET_NAMESTORE_Handle *namestore_handle;
+/**
+ * Our handle to the namecache service
+ */
+static struct GNUNET_NAMECACHE_Handle *namecache_handle;
+
+/**
+ * Our handle to the identity service
+ */
+static struct GNUNET_IDENTITY_Handle *identity_handle;
+
+/**
+ * Our handle to the identity operation to find the master zone
+ * for intercepted queries.
+ */
+static struct GNUNET_IDENTITY_Operation *identity_op;
+
/**
* Handle to iterate over our authoritative zone in namestore
*/
static struct GNUNET_NAMESTORE_ZoneIterator *namestore_iter;
+/**
+ * Handle to monitor namestore changes to instant propagation.
+ */
+static struct GNUNET_NAMESTORE_ZoneMonitor *zmon;
+
/**
* Our notification context.
*/
*/
static struct ClientLookupHandle *clh_tail;
+/**
+ * Head of monitor activities; kept in a DLL.
+ */
+static struct MonitorActivity *ma_head;
+
+/**
+ * Tail of monitor activities; kept in a DLL.
+ */
+static struct MonitorActivity *ma_tail;
+
/**
* Useful for zone update for DHT put
*/
*/
static unsigned long long last_num_public_records;
+/**
+ * Minimum relative expiration time of records seem during the current
+ * zone iteration.
+ */
+static struct GNUNET_TIME_Relative min_relative_record_time;
+
/**
* Zone iteration PUT interval.
*/
static struct GNUNET_TIME_Relative put_interval;
/**
- * Time window for zone iteration
+ * Default time window for zone iteration
+ */
+static struct GNUNET_TIME_Relative zone_publish_time_window_default;
+
+/**
+ * Time window for zone iteration, adjusted based on relative record
+ * expiration times in our zone.
*/
static struct GNUNET_TIME_Relative zone_publish_time_window;
/**
* zone publish task
*/
-static GNUNET_SCHEDULER_TaskIdentifier zone_publish_task;
+static struct GNUNET_SCHEDULER_Task * zone_publish_task;
/**
* #GNUNET_YES if zone has never been published before
*/
static int first_zone_iteration;
-/**
- * The lookup timeout
- */
-static struct GNUNET_TIME_Relative default_lookup_timeout;
-
/**
* #GNUNET_YES if ipv6 is supported
*/
* @param tc unused
*/
static void
-shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+shutdown_task (void *cls)
{
struct ClientLookupHandle *clh;
+ struct MonitorActivity *ma;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Shutting down!\n");
- GNUNET_SERVER_notification_context_destroy (nc);
+ if (NULL != nc)
+ {
+ GNUNET_SERVER_notification_context_destroy (nc);
+ nc = NULL;
+ }
while (NULL != (clh = clh_head))
{
+ GNUNET_SERVER_client_set_user_context (clh->client, NULL);
GNS_resolver_lookup_cancel (clh->lookup);
GNUNET_CONTAINER_DLL_remove (clh_head, clh_tail, clh);
GNUNET_free (clh);
}
GNS_interceptor_done ();
+ if (NULL != identity_op)
+ {
+ GNUNET_IDENTITY_cancel (identity_op);
+ identity_op = NULL;
+ }
+ if (NULL != identity_handle)
+ {
+ GNUNET_IDENTITY_disconnect (identity_handle);
+ identity_handle = NULL;
+ }
GNS_resolver_done ();
GNS_shorten_done ();
+ while (NULL != (ma = ma_head))
+ {
+ GNUNET_DHT_put_cancel (ma->ph);
+ GNUNET_CONTAINER_DLL_remove (ma_head,
+ ma_tail,
+ ma);
+ GNUNET_free (ma);
+ }
if (NULL != statistics)
{
GNUNET_STATISTICS_destroy (statistics, GNUNET_NO);
statistics = NULL;
}
- if (GNUNET_SCHEDULER_NO_TASK != zone_publish_task)
+ if (NULL != zone_publish_task)
{
GNUNET_SCHEDULER_cancel (zone_publish_task);
- zone_publish_task = GNUNET_SCHEDULER_NO_TASK;
+ zone_publish_task = NULL;
}
if (NULL != namestore_iter)
{
GNUNET_NAMESTORE_zone_iteration_stop (namestore_iter);
namestore_iter = NULL;
}
+ if (NULL != zmon)
+ {
+ GNUNET_NAMESTORE_zone_monitor_stop (zmon);
+ zmon = NULL;
+ }
if (NULL != namestore_handle)
{
GNUNET_NAMESTORE_disconnect (namestore_handle);
namestore_handle = NULL;
}
+ if (NULL != namecache_handle)
+ {
+ GNUNET_NAMECACHE_disconnect (namecache_handle);
+ namecache_handle = NULL;
+ }
if (NULL != active_put)
{
GNUNET_DHT_put_cancel (active_put);
* Method called periodically that triggers iteration over authoritative records
*
* @param cls closure
- * @param tc task context
*/
static void
-publish_zone_dht_next (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+publish_zone_dht_next (void *cls)
{
- zone_publish_task = GNUNET_SCHEDULER_NO_TASK;
+ zone_publish_task = NULL;
GNUNET_NAMESTORE_zone_iterator_next (namestore_iter);
}
* Periodically iterate over our zone and store everything in dht
*
* @param cls NULL
- * @param tc task context
*/
static void
-publish_zone_dht_start (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc);
+publish_zone_dht_start (void *cls);
/**
* Continuation called from DHT once the PUT operation is done.
*
- * @param cls closure, NULL
+ * @param cls closure, NULL if called from regular iteration,
+ * `struct MonitorActivity` if called from #handle_monitor_event.
* @param success #GNUNET_OK on success
*/
static void
dht_put_continuation (void *cls,
int success)
{
- struct GNUNET_TIME_Relative next_put_interval;
+ struct MonitorActivity *ma = cls;
+ struct GNUNET_TIME_Relative next_put_interval;
- num_public_records++;
- if ( (num_public_records > last_num_public_records) &&
- (GNUNET_NO == first_zone_iteration) )
+ num_public_records++;
+ if (NULL == ma)
{
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Last record count was lower than current record count. Reducing interval.\n");
- put_interval = GNUNET_TIME_relative_divide (zone_publish_time_window,
- num_public_records);
- next_put_interval = GNUNET_TIME_relative_divide (put_interval,
- LATE_ITERATION_SPEEDUP_FACTOR);
+ active_put = NULL;
+ if ( (num_public_records > last_num_public_records) &&
+ (GNUNET_NO == first_zone_iteration) )
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Last record count was lower than current record count. Reducing interval.\n");
+ put_interval = GNUNET_TIME_relative_divide (zone_publish_time_window,
+ num_public_records);
+ next_put_interval = GNUNET_TIME_relative_divide (put_interval,
+ LATE_ITERATION_SPEEDUP_FACTOR);
+ }
+ else
+ next_put_interval = put_interval;
+
+ GNUNET_STATISTICS_set (statistics,
+ "Current zone iteration interval (ms)",
+ next_put_interval.rel_value_us / 1000LL,
+ GNUNET_NO);
+ zone_publish_task = GNUNET_SCHEDULER_add_delayed (next_put_interval,
+ &publish_zone_dht_next,
+ NULL);
}
else
- next_put_interval = put_interval;
-
- GNUNET_STATISTICS_set (statistics,
- "Current zone iteration interval (ms)",
- next_put_interval.rel_value_us / 1000LL,
- GNUNET_NO);
- zone_publish_task = GNUNET_SCHEDULER_add_delayed (next_put_interval,
- &publish_zone_dht_next,
- NULL);
+ {
+ GNUNET_CONTAINER_DLL_remove (ma_head,
+ ma_tail,
+ ma);
+ GNUNET_free (ma);
+ }
+}
+
+
+/**
+ * Convert namestore records from the internal format to that
+ * suitable for publication (removes private records, converts
+ * to absolute expiration time).
+ *
+ * @param rd input records
+ * @param rd_count size of the @a rd and @a rd_public arrays
+ * @param rd_public where to write the converted records
+ * @return number of records written to @a rd_public
+ */
+static unsigned int
+convert_records_for_export (const struct GNUNET_GNSRECORD_Data *rd,
+ unsigned int rd_count,
+ struct GNUNET_GNSRECORD_Data *rd_public)
+{
+ struct GNUNET_TIME_Absolute now;
+ unsigned int rd_public_count;
+ unsigned int i;
+
+ rd_public_count = 0;
+ now = GNUNET_TIME_absolute_get ();
+ for (i=0;i<rd_count;i++)
+ if (0 == (rd[i].flags & GNUNET_GNSRECORD_RF_PRIVATE))
+ {
+ rd_public[rd_public_count] = rd[i];
+ if (0 != (rd[i].flags & GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION))
+ {
+ /* GNUNET_GNSRECORD_block_create will convert to absolute time;
+ we just need to adjust our iteration frequency */
+ min_relative_record_time.rel_value_us =
+ GNUNET_MIN (rd_public[rd_public_count].expiration_time,
+ min_relative_record_time.rel_value_us);
+ }
+ else if (rd_public[rd_public_count].expiration_time < now.abs_value_us)
+ {
+ /* record already expired, skip it */
+ continue;
+ }
+ rd_public_count++;
+ }
+ return rd_public_count;
+}
+
+
+/**
+ * Store GNS records in the DHT.
+ *
+ * @param key key of the zone
+ * @param label label to store under
+ * @param rd_public public record data
+ * @param rd_public_count number of records in @a rd_public
+ * @param pc_arg closure argument to pass to the #dht_put_continuation
+ * @return DHT PUT handle, NULL on error
+ */
+static struct GNUNET_DHT_PutHandle *
+perform_dht_put (const struct GNUNET_CRYPTO_EcdsaPrivateKey *key,
+ const char *label,
+ const struct GNUNET_GNSRECORD_Data *rd_public,
+ unsigned int rd_public_count,
+ void *pc_arg)
+{
+ struct GNUNET_GNSRECORD_Block *block;
+ struct GNUNET_HashCode query;
+ struct GNUNET_TIME_Absolute expire;
+ size_t block_size;
+ struct GNUNET_DHT_PutHandle *ret;
+
+ expire = GNUNET_GNSRECORD_record_get_expiration_time (rd_public_count,
+ rd_public);
+ block = GNUNET_GNSRECORD_block_create (key,
+ expire,
+ label,
+ rd_public,
+ rd_public_count);
+ if (NULL == block)
+ return NULL; /* whoops */
+ block_size = ntohl (block->purpose.size)
+ + sizeof (struct GNUNET_CRYPTO_EcdsaSignature)
+ + sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey);
+ GNUNET_GNSRECORD_query_from_private_key (key,
+ label,
+ &query);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Storing %u record(s) for label `%s' in DHT with expiration `%s' under key %s\n",
+ rd_public_count,
+ label,
+ GNUNET_STRINGS_absolute_time_to_string (expire),
+ GNUNET_h2s (&query));
+ ret = GNUNET_DHT_put (dht_handle, &query,
+ DHT_GNS_REPLICATION_LEVEL,
+ GNUNET_DHT_RO_DEMULTIPLEX_EVERYWHERE,
+ GNUNET_BLOCK_TYPE_GNS_NAMERECORD,
+ block_size,
+ block,
+ expire,
+ &dht_put_continuation,
+ pc_arg);
+ GNUNET_free (block);
+ return ret;
}
*
* @param cls the closure (NULL)
* @param key the private key of the authority (ours)
- * @param name the name of the records, NULL once the iteration is done
+ * @param label the name of the records, NULL once the iteration is done
* @param rd_count the number of records in @a rd
* @param rd the record data
*/
static void
put_gns_record (void *cls,
- const struct GNUNET_CRYPTO_EccPrivateKey *key,
- const char *name,
+ const struct GNUNET_CRYPTO_EcdsaPrivateKey *key,
+ const char *label,
unsigned int rd_count,
- const struct GNUNET_NAMESTORE_RecordData *rd)
-{
- struct GNUNET_NAMESTORE_Block *block;
- struct GNUNET_HashCode query;
- struct GNUNET_TIME_Absolute expire;
- struct GNUNET_TIME_Absolute now;
- size_t block_size;
- struct GNUNET_NAMESTORE_RecordData rd_public[rd_count];
+ const struct GNUNET_GNSRECORD_Data *rd)
+{
+ struct GNUNET_GNSRECORD_Data rd_public[rd_count];
unsigned int rd_public_count;
- unsigned int i;
- if (NULL == name)
+ if (NULL == label)
{
/* we're done with one iteration, calculate when to do the next one */
namestore_iter = NULL;
}
else
{
+ /* If records are present, next publication is based on the minimum
+ * relative expiration time of the records published divided by 4
+ */
+ zone_publish_time_window = GNUNET_TIME_relative_min (
+ GNUNET_TIME_relative_divide (min_relative_record_time, 4),
+ zone_publish_time_window_default);
put_interval = GNUNET_TIME_relative_divide (zone_publish_time_window,
- num_public_records);
+ num_public_records);
}
+ /* reset for next iteration */
+ min_relative_record_time = GNUNET_TIME_UNIT_FOREVER_REL;
put_interval = GNUNET_TIME_relative_max (MINIMUM_ZONE_ITERATION_INTERVAL,
put_interval);
put_interval.rel_value_us / 1000LL,
GNUNET_NO);
GNUNET_STATISTICS_update (statistics,
- "Number of zone iterations",
- 1,
+ "Number of zone iterations",
+ 1,
GNUNET_NO);
GNUNET_STATISTICS_set (statistics,
"Number of public records in DHT",
&publish_zone_dht_start,
NULL);
else
- zone_publish_task = GNUNET_SCHEDULER_add_now (&publish_zone_dht_start,
+ zone_publish_task = GNUNET_SCHEDULER_add_now (&publish_zone_dht_start,
NULL);
return;
}
- /* filter out records that are not public, and convert to
- absolute expiration time. */
- rd_public_count = 0;
- now = GNUNET_TIME_absolute_get ();
- for (i=0;i<rd_count;i++)
- if (0 == (rd[i].flags & (GNUNET_NAMESTORE_RF_PRIVATE |
- GNUNET_NAMESTORE_RF_PENDING)))
- {
- rd_public[rd_public_count] = rd[i];
- if (0 != (rd[i].flags & GNUNET_NAMESTORE_RF_RELATIVE_EXPIRATION))
- {
- rd_public[rd_public_count].flags &= ~GNUNET_NAMESTORE_RF_RELATIVE_EXPIRATION;
- rd_public[rd_public_count].expiration_time += now.abs_value_us;
- }
- rd_public_count++;
- }
+ rd_public_count = convert_records_for_export (rd,
+ rd_count,
+ rd_public);
/* We got a set of records to publish */
if (0 == rd_public_count)
NULL);
return;
}
- expire = GNUNET_NAMESTORE_record_get_expiration_time (rd_public_count,
- rd_public);
- block = GNUNET_NAMESTORE_block_create (key,
- expire,
- name,
- rd_public,
- rd_public_count);
- block_size = ntohl (block->purpose.size)
- + sizeof (struct GNUNET_CRYPTO_EccSignature)
- + sizeof (struct GNUNET_CRYPTO_EccPublicKey);
- GNUNET_NAMESTORE_query_from_private_key (key,
- name,
- &query);
- active_put = GNUNET_DHT_put (dht_handle, &query,
- DHT_GNS_REPLICATION_LEVEL,
- GNUNET_DHT_RO_DEMULTIPLEX_EVERYWHERE,
- GNUNET_BLOCK_TYPE_GNS_NAMERECORD,
- block_size,
- block,
- expire,
- DHT_OPERATION_TIMEOUT,
- &dht_put_continuation,
- NULL);
+ active_put = perform_dht_put (key,
+ label,
+ rd_public,
+ rd_public_count,
+ NULL);
if (NULL == active_put)
{
GNUNET_break (0);
dht_put_continuation (NULL, GNUNET_NO);
}
- GNUNET_free (block);
}
/**
- * Periodically iterate over our zone and store everything in dht
+ * Periodically iterate over all zones and store everything in DHT
*
* @param cls NULL
- * @param tc task context
*/
static void
-publish_zone_dht_start (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+publish_zone_dht_start (void *cls)
{
- zone_publish_task = GNUNET_SCHEDULER_NO_TASK;
+ zone_publish_task = NULL;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Scheduling DHT zone update!\n");
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Starting DHT zone update!\n");
/* start counting again */
num_public_records = 0;
namestore_iter = GNUNET_NAMESTORE_zone_iteration_start (namestore_handle,
- NULL, /* All zones */
- &put_gns_record,
- NULL);
+ NULL, /* All zones */
+ &put_gns_record, NULL );
+}
+
+
+/**
+ * Process a record that was stored in the namestore
+ * (invoked by the monitor).
+ *
+ * @param cls closure, NULL
+ * @param zone private key of the zone; NULL on disconnect
+ * @param label label of the records; NULL on disconnect
+ * @param rd_count number of entries in @a rd array, 0 if label was deleted
+ * @param rd array of records with data to store
+ */
+static void
+handle_monitor_event (void *cls,
+ const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone,
+ const char *label,
+ unsigned int rd_count,
+ const struct GNUNET_GNSRECORD_Data *rd)
+{
+ struct GNUNET_GNSRECORD_Data rd_public[rd_count];
+ unsigned int rd_public_count;
+ struct MonitorActivity *ma;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received %u records for label `%s' via namestore monitor\n",
+ rd_count,
+ label);
+ /* filter out records that are not public, and convert to
+ absolute expiration time. */
+ rd_public_count = convert_records_for_export (rd, rd_count,
+ rd_public);
+ if (0 == rd_public_count)
+ return; /* nothing to do */
+ ma = GNUNET_new (struct MonitorActivity);
+ ma->ph = perform_dht_put (zone, label,
+ rd, rd_count,
+ ma);
+ if (NULL == ma->ph)
+ {
+ /* PUT failed, do not remember operation */
+ GNUNET_free (ma);
+ return;
+ }
+ GNUNET_CONTAINER_DLL_insert (ma_head,
+ ma_tail,
+ ma);
}
* Reply to client with the result from our lookup.
*
* @param cls the closure (our client lookup handle)
- * @param rd_count the number of records
+ * @param rd_count the number of records in @a rd
* @param rd the record data
*/
static void
send_lookup_response (void* cls,
uint32_t rd_count,
- const struct GNUNET_NAMESTORE_RecordData *rd)
+ const struct GNUNET_GNSRECORD_Data *rd)
{
struct ClientLookupHandle *clh = cls;
struct GNUNET_GNS_ClientLookupResultMessage *rmsg;
size_t len;
-
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Sending `%s' message with %d results\n",
- "LOOKUP_RESULT",
- rd_count);
-
- len = GNUNET_NAMESTORE_records_get_size (rd_count, rd);
- rmsg = GNUNET_malloc (len + sizeof (struct GNUNET_GNS_ClientLookupResultMessage));
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Sending LOOKUP_RESULT message with %u results\n",
+ (unsigned int) rd_count);
+
+ len = GNUNET_GNSRECORD_records_get_size (rd_count, rd);
+ rmsg = GNUNET_malloc (len + sizeof (struct GNUNET_GNS_ClientLookupResultMessage));
rmsg->header.type = htons (GNUNET_MESSAGE_TYPE_GNS_LOOKUP_RESULT);
rmsg->header.size = htons (len + sizeof(struct GNUNET_GNS_ClientLookupResultMessage));
rmsg->id = clh->request_id;
- rmsg->rd_count = htonl (rd_count);
- GNUNET_NAMESTORE_records_serialize (rd_count, rd, len,
+ rmsg->rd_count = htonl (rd_count);
+ GNUNET_GNSRECORD_records_serialize (rd_count, rd, len,
(char*) &rmsg[1]);
- GNUNET_SERVER_notification_context_unicast (nc,
+ GNUNET_SERVER_notification_context_unicast (nc,
clh->client,
&rmsg->header,
GNUNET_NO);
GNUNET_free (rmsg);
- GNUNET_SERVER_receive_done (clh->client,
- GNUNET_OK);
GNUNET_CONTAINER_DLL_remove (clh_head, clh_tail, clh);
+ GNUNET_SERVER_client_set_user_context (clh->client, NULL);
GNUNET_free (clh);
GNUNET_STATISTICS_update (statistics,
- "Completed lookups", 1,
+ "Completed lookups", 1,
GNUNET_NO);
GNUNET_STATISTICS_update (statistics,
- "Records resolved",
- rd_count,
+ "Records resolved",
+ rd_count,
GNUNET_NO);
}
struct ClientLookupHandle *clh;
char *nameptr = name;
const char *utf_in;
- const struct GNUNET_CRYPTO_EccPrivateKey *key;
+ const struct GNUNET_CRYPTO_EcdsaPrivateKey *key;
uint16_t msg_size;
const struct GNUNET_GNS_ClientLookupMessage *sh_msg;
-
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received `%s' message\n",
- "LOOKUP");
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received LOOKUP message\n");
msg_size = ntohs (message->size);
if (msg_size < sizeof (struct GNUNET_GNS_ClientLookupMessage))
{
}
sh_msg = (const struct GNUNET_GNS_ClientLookupMessage *) message;
GNUNET_SERVER_notification_context_add (nc, client);
- if (GNUNET_YES == ntohl (sh_msg->have_key))
+ if (GNUNET_YES == ntohs (sh_msg->have_key))
key = &sh_msg->shorten_key;
else
key = NULL;
GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
return;
}
- GNUNET_STRINGS_utf8_tolower (utf_in, &nameptr);
-
+ GNUNET_STRINGS_utf8_tolower (utf_in, nameptr);
+ GNUNET_SERVER_receive_done (client, GNUNET_OK);
+
clh = GNUNET_new (struct ClientLookupHandle);
GNUNET_SERVER_client_set_user_context (client, clh);
GNUNET_CONTAINER_DLL_insert (clh_head, clh_tail, clh);
"LOOKUP: Query for A record but AF_INET not supported!");
send_lookup_response (clh, 0, NULL);
return;
- }
+ }
if ( (GNUNET_DNSPARSER_TYPE_AAAA == ntohl (sh_msg->type)) &&
(GNUNET_OK != v6_enabled) )
{
send_lookup_response (clh, 0, NULL);
return;
}
- clh->lookup = GNS_resolver_lookup (&sh_msg->zone,
+ clh->lookup = GNS_resolver_lookup (&sh_msg->zone,
ntohl (sh_msg->type),
name,
key,
- ntohl (sh_msg->only_cached),
+ (enum GNUNET_GNS_LocalOptions) ntohs (sh_msg->options),
&send_lookup_response, clh);
GNUNET_STATISTICS_update (statistics,
- "Lookup attempts",
+ "Lookup attempts",
1, GNUNET_NO);
}
}
+/**
+ * The zone monitor is now in SYNC with the current state of the
+ * name store. Start to perform periodic iterations.
+ *
+ * @param cls NULL
+ */
+static void
+monitor_sync_event (void *cls)
+{
+ zone_publish_task = GNUNET_SCHEDULER_add_now (&publish_zone_dht_start,
+ NULL);
+}
+
+
+/**
+ * Method called to inform about the ego to be used for the master zone
+ * for DNS interceptions.
+ *
+ * This function is only called ONCE, and 'NULL' being passed in
+ * @a ego does indicate that interception is not configured.
+ * If @a ego is non-NULL, we should start to intercept DNS queries
+ * and resolve ".gnu" queries using the given ego as the master zone.
+ *
+ * @param cls closure, our `const struct GNUNET_CONFIGURATION_Handle *c`
+ * @param ego ego handle
+ * @param ctx context for application to store data for this ego
+ * (during the lifetime of this process, initially NULL)
+ * @param name name assigned by the user for this ego,
+ * NULL if the user just deleted the ego and it
+ * must thus no longer be used
+ */
+static void
+identity_intercept_cb (void *cls,
+ struct GNUNET_IDENTITY_Ego *ego,
+ void **ctx,
+ const char *name)
+{
+ const struct GNUNET_CONFIGURATION_Handle *cfg = cls;
+ struct GNUNET_CRYPTO_EcdsaPublicKey dns_root;
+
+ identity_op = NULL;
+ if (NULL == ego)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ _("No ego configured for `%s`\n"),
+ "gns-intercept");
+ return;
+ }
+ GNUNET_IDENTITY_ego_get_public_key (ego,
+ &dns_root);
+ if (GNUNET_SYSERR ==
+ GNS_interceptor_init (&dns_root, cfg))
+ {
+ GNUNET_break (0);
+ GNUNET_SCHEDULER_add_now (&shutdown_task, NULL);
+ return;
+ }
+}
+
+
/**
* Process GNS requests.
*
* @param c configuration to use
*/
static void
-run (void *cls, struct GNUNET_SERVER_Handle *server,
+run (void *cls,
+ struct GNUNET_SERVER_Handle *server,
const struct GNUNET_CONFIGURATION_Handle *c)
{
static const struct GNUNET_SERVER_MessageHandler handlers[] = {
{ &handle_lookup, NULL, GNUNET_MESSAGE_TYPE_GNS_LOOKUP, 0},
{NULL, NULL, 0, 0}
};
- struct GNUNET_CRYPTO_EccPublicKey dns_root;
unsigned long long max_parallel_bg_queries = 0;
- char *dns_root_name;
v6_enabled = GNUNET_NETWORK_test_pf (PF_INET6);
v4_enabled = GNUNET_NETWORK_test_pf (PF_INET);
-
+ min_relative_record_time = GNUNET_TIME_UNIT_FOREVER_REL;
namestore_handle = GNUNET_NAMESTORE_connect (c);
if (NULL == namestore_handle)
{
GNUNET_SCHEDULER_shutdown ();
return;
}
-
- put_interval = INITIAL_PUT_INTERVAL;
- zone_publish_time_window = DEFAULT_ZONE_PUBLISH_TIME_WINDOW;
+ namecache_handle = GNUNET_NAMECACHE_connect (c);
+ if (NULL == namecache_handle)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Failed to connect to the namecache!\n"));
+ GNUNET_SCHEDULER_shutdown ();
+ return;
+ }
+ put_interval = INITIAL_PUT_INTERVAL;
+ zone_publish_time_window_default = DEFAULT_ZONE_PUBLISH_TIME_WINDOW;
if (GNUNET_OK ==
GNUNET_CONFIGURATION_get_value_time (c, "gns",
"ZONE_PUBLISH_TIME_WINDOW",
- &zone_publish_time_window))
+ &zone_publish_time_window_default))
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Time window for zone iteration: %s\n",
- GNUNET_STRINGS_relative_time_to_string (zone_publish_time_window, GNUNET_YES));
+ GNUNET_STRINGS_relative_time_to_string (zone_publish_time_window,
+ GNUNET_YES));
}
+ zone_publish_time_window = zone_publish_time_window_default;
if (GNUNET_OK ==
GNUNET_CONFIGURATION_get_value_number (c, "gns",
"MAX_PARALLEL_BACKGROUND_QUERIES",
max_parallel_bg_queries);
}
- if (GNUNET_OK ==
- GNUNET_CONFIGURATION_get_value_time (c, "gns",
- "DEFAULT_LOOKUP_TIMEOUT",
- &default_lookup_timeout))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Default lookup timeout: %s\n",
- GNUNET_STRINGS_relative_time_to_string (default_lookup_timeout,
- GNUNET_YES));
- }
-
dht_handle = GNUNET_DHT_connect (c,
(unsigned int) max_parallel_bg_queries);
if (NULL == dht_handle)
GNUNET_SCHEDULER_add_now (&shutdown_task, NULL);
return;
}
-
- if (GNUNET_OK ==
- GNUNET_CONFIGURATION_get_value_string (c, "gns", "DNS_ROOT",
- &dns_root_name))
+
+ identity_handle = GNUNET_IDENTITY_connect (c,
+ NULL,
+ NULL);
+ if (NULL == identity_handle)
{
- if (GNUNET_OK !=
- GNUNET_CRYPTO_ecc_public_key_from_string (dns_root_name,
- strlen (dns_root_name),
- &dns_root))
- {
- GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_ERROR,
- "gns", "DNS_ROOT",
- _("valid public key required"));
- GNUNET_SCHEDULER_add_now (&shutdown_task, NULL);
- GNUNET_free (dns_root_name);
- return;
- }
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
- "DNS hijacking with root `%s' enabled. Connecting to DNS service.\n",
- dns_root_name);
- GNUNET_free (dns_root_name);
- if (GNUNET_SYSERR ==
- GNS_interceptor_init (&dns_root, c))
- {
- GNUNET_SCHEDULER_add_now (&shutdown_task, NULL);
- return;
- }
+ "Could not connect to identity service!\n");
+ }
+ else
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Looking for gns-intercept ego\n");
+ identity_op = GNUNET_IDENTITY_get (identity_handle,
+ "gns-intercept",
+ &identity_intercept_cb,
+ (void *) c);
}
- GNS_resolver_init (namestore_handle, dht_handle,
+ GNS_resolver_init (namecache_handle,
+ dht_handle,
c,
max_parallel_bg_queries);
- GNS_shorten_init (namestore_handle, dht_handle);
+ GNS_shorten_init (namestore_handle,
+ namecache_handle,
+ dht_handle);
GNUNET_SERVER_disconnect_notify (server,
¬ify_client_disconnect,
NULL);
- /* Schedule periodic put for our records. */
+ /* Schedule periodic put for our records. */
first_zone_iteration = GNUNET_YES;
GNUNET_SERVER_add_handlers (server, handlers);
statistics = GNUNET_STATISTICS_create ("gns", c);
nc = GNUNET_SERVER_notification_context_create (server, 1);
- zone_publish_task = GNUNET_SCHEDULER_add_now (&publish_zone_dht_start,
- NULL);
- GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
- &shutdown_task, NULL);
+ zmon = GNUNET_NAMESTORE_zone_monitor_start (c,
+ NULL,
+ GNUNET_NO,
+ &handle_monitor_event,
+ &monitor_sync_event,
+ NULL);
+ GNUNET_break (NULL != zmon);
+ GNUNET_SCHEDULER_add_shutdown (&shutdown_task, NULL);
}