/*
This file is part of GNUnet.
- (C) 2010-2013 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2010-2013, 2016 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
- by the Free Software Foundation; either version 3, or (at your
- option) any later version.
+ GNUnet is free software: you can redistribute it and/or modify it
+ under the terms of the GNU Affero General Public License as published
+ by the Free Software Foundation, either version 3 of the License,
+ or (at your option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
+ Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
#include "gnunet_dnsparser_lib.h"
#include "gnunet_arm_service.h"
#include "gnunet_signatures.h"
+#include "gnunet_gns_service.h"
#include "gnunet_namestore_service.h"
#include "namestore.h"
#define LOG(kind,...) GNUNET_log_from (kind, "namestore-api",__VA_ARGS__)
+/**
+ * We grant the namestore up to 1 minute of latency, if it is slower than
+ * that, store queries will fail.
+ */
+#define NAMESTORE_DELAY_TOLERANCE GNUNET_TIME_UNIT_MINUTES
/**
* An QueueEntry used to store information for a pending
/**
* Main handle to access the namestore.
*/
- struct GNUNET_NAMESTORE_Handle *nsh;
+ struct GNUNET_NAMESTORE_Handle *h;
/**
* Continuation to call
GNUNET_NAMESTORE_ContinuationWithStatus cont;
/**
- * Closure for 'cont'.
+ * Closure for @e cont.
*/
void *cont_cls;
GNUNET_NAMESTORE_RecordMonitor proc;
/**
- * Closure for 'proc'.
+ * Closure for @e proc.
*/
void *proc_cls;
/**
- * Function to call with the blocks we get back; or NULL.
+ * Function to call on errors.
+ */
+ GNUNET_SCHEDULER_TaskCallback error_cb;
+
+ /**
+ * Closure for @e error_cb.
*/
- GNUNET_NAMESTORE_BlockProcessor block_proc;
+ void *error_cb_cls;
/**
- * Closure for 'block_proc'.
+ * Envelope of the message to send to the service, if not yet
+ * sent.
*/
- void *block_proc_cls;
+ struct GNUNET_MQ_Envelope *env;
+
+ /**
+ * Task scheduled to warn us if the namestore is way too slow.
+ */
+ struct GNUNET_SCHEDULER_Task *timeout_task;
/**
* The operation id this zone iteration operation has
struct GNUNET_NAMESTORE_Handle *h;
/**
- * The continuation to call with the results
+ * Function to call on completion.
*/
- GNUNET_NAMESTORE_RecordMonitor proc;
+ GNUNET_SCHEDULER_TaskCallback finish_cb;
/**
- * Closure for 'proc'.
+ * Closure for @e error_cb.
*/
- void* proc_cls;
+ void *finish_cb_cls;
/**
- * Private key of the zone.
+ * The continuation to call with the results
*/
- struct GNUNET_CRYPTO_EccPrivateKey zone;
+ GNUNET_NAMESTORE_RecordMonitor proc;
/**
- * The operation id this zone iteration operation has
+ * Closure for @e proc.
*/
- uint32_t op_id;
-
-};
+ void *proc_cls;
+ /**
+ * Function to call on errors.
+ */
+ GNUNET_SCHEDULER_TaskCallback error_cb;
-/**
- * Message in linked list we should send to the service. The
- * actual binary message follows this struct.
- */
-struct PendingMessage
-{
+ /**
+ * Closure for @e error_cb.
+ */
+ void *error_cb_cls;
/**
- * Kept in a DLL.
+ * Envelope of the message to send to the service, if not yet
+ * sent.
*/
- struct PendingMessage *next;
+ struct GNUNET_MQ_Envelope *env;
/**
- * Kept in a DLL.
+ * Private key of the zone.
*/
- struct PendingMessage *prev;
+ struct GNUNET_CRYPTO_EcdsaPrivateKey zone;
/**
- * Size of the message.
+ * The operation id this zone iteration operation has
*/
- size_t size;
+ uint32_t op_id;
};
const struct GNUNET_CONFIGURATION_Handle *cfg;
/**
- * Socket (if available).
- */
- struct GNUNET_CLIENT_Connection *client;
-
- /**
- * Currently pending transmission request (or NULL).
+ * Connection to the service (if available).
*/
- struct GNUNET_CLIENT_TransmitHandle *th;
-
- /**
- * Head of linked list of pending messages to send to the service
- */
- struct PendingMessage * pending_head;
-
- /**
- * Tail of linked list of pending messages to send to the service
- */
- struct PendingMessage * pending_tail;
+ struct GNUNET_MQ_Handle *mq;
/**
* Head of pending namestore queue entries
*/
- struct GNUNET_NAMESTORE_QueueEntry * op_head;
+ struct GNUNET_NAMESTORE_QueueEntry *op_head;
/**
* Tail of pending namestore queue entries
*/
- struct GNUNET_NAMESTORE_QueueEntry * op_tail;
+ struct GNUNET_NAMESTORE_QueueEntry *op_tail;
/**
* Head of pending namestore zone iterator entries
*/
- struct GNUNET_NAMESTORE_ZoneIterator * z_head;
+ struct GNUNET_NAMESTORE_ZoneIterator *z_head;
/**
* Tail of pending namestore zone iterator entries
*/
- struct GNUNET_NAMESTORE_ZoneIterator * z_tail;
+ struct GNUNET_NAMESTORE_ZoneIterator *z_tail;
/**
* Reconnect task
*/
- GNUNET_SCHEDULER_TaskIdentifier reconnect_task;
+ struct GNUNET_SCHEDULER_Task *reconnect_task;
/**
- * Should we reconnect to service due to some serious error?
+ * Delay introduced before we reconnect.
*/
- int reconnect;
+ struct GNUNET_TIME_Relative reconnect_delay;
/**
- * Did we start to receive yet?
+ * Should we reconnect to service due to some serious error?
*/
- int is_receiving;
+ int reconnect;
/**
* The last operation id used for a NAMESTORE operation
/**
- * Handle an incoming message of type #GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_BLOCK_RESPONSE.
+ * Find the queue entry that matches the @a rid
*
- * @param qe the respective entry in the message queue
- * @param msg the message we received
- * @param size the message size
- * @return #GNUNET_OK on success, #GNUNET_SYSERR on error and we did NOT notify the client
+ * @param h namestore handle
+ * @param rid id to look up
+ * @return NULL if @a rid was not found
*/
-static int
-handle_lookup_block_response (struct GNUNET_NAMESTORE_QueueEntry *qe,
- const struct LookupBlockResponseMessage *msg,
- size_t size)
+static struct GNUNET_NAMESTORE_QueueEntry *
+find_qe (struct GNUNET_NAMESTORE_Handle *h,
+ uint32_t rid)
{
- struct GNUNET_NAMESTORE_Block *block;
- char buf[size + sizeof (struct GNUNET_NAMESTORE_Block) - sizeof (struct LookupBlockResponseMessage)];
+ struct GNUNET_NAMESTORE_QueueEntry *qe;
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Received `%s'\n",
- "LOOKUP_BLOCK_RESPONSE");
- if (0 == GNUNET_TIME_absolute_ntoh (msg->expire).abs_value_us)
- {
- /* no match found */
- if (NULL != qe->block_proc)
- qe->block_proc (qe->block_proc_cls, NULL);
- return GNUNET_OK;
- }
+ for (qe = h->op_head; qe != NULL; qe = qe->next)
+ if (qe->op_id == rid)
+ return qe;
+ return NULL;
+}
- block = (struct GNUNET_NAMESTORE_Block *) buf;
- block->signature = msg->signature;
- block->derived_key = msg->derived_key;
- block->purpose.purpose = htonl (GNUNET_SIGNATURE_PURPOSE_GNS_RECORD_SIGN);
- block->purpose.size = htonl (size - sizeof (struct LookupBlockResponseMessage) +
- sizeof (struct GNUNET_TIME_AbsoluteNBO) +
- sizeof (struct GNUNET_CRYPTO_EccSignaturePurpose));
- block->expiration_time = msg->expire;
- memcpy (&block[1],
- &msg[1],
- size - sizeof (struct LookupBlockResponseMessage));
- if (GNUNET_OK !=
- GNUNET_NAMESTORE_block_verify (block))
- {
- GNUNET_break (0);
- return GNUNET_SYSERR;
- }
- if (NULL != qe->block_proc)
- qe->block_proc (qe->block_proc_cls, block);
- else
- GNUNET_break (0);
- return GNUNET_OK;
+
+/**
+ * Find the zone iteration entry that matches the @a rid
+ *
+ * @param h namestore handle
+ * @param rid id to look up
+ * @return NULL if @a rid was not found
+ */
+static struct GNUNET_NAMESTORE_ZoneIterator *
+find_zi (struct GNUNET_NAMESTORE_Handle *h,
+ uint32_t rid)
+{
+ struct GNUNET_NAMESTORE_ZoneIterator *ze;
+
+ for (ze = h->z_head; ze != NULL; ze = ze->next)
+ if (ze->op_id == rid)
+ return ze;
+ return NULL;
}
/**
- * Handle an incoming message of type 'GNUNET_MESSAGE_TYPE_NAMESTORE_BLOCK_CACHE_RESPONSE'
+ * Free @a qe.
*
- * @param qe the respective entry in the message queue
- * @param msg the message we received
- * @param size the message size
- * @return #GNUNET_OK on success, #GNUNET_SYSERR on error and we did NOT notify the client
+ * @param qe entry to free
+ */
+static void
+free_qe (struct GNUNET_NAMESTORE_QueueEntry *qe)
+{
+ struct GNUNET_NAMESTORE_Handle *h = qe->h;
+
+ GNUNET_CONTAINER_DLL_remove (h->op_head,
+ h->op_tail,
+ qe);
+ if (NULL != qe->env)
+ GNUNET_MQ_discard (qe->env);
+ if (NULL != qe->timeout_task)
+ GNUNET_SCHEDULER_cancel (qe->timeout_task);
+ GNUNET_free (qe);
+}
+
+
+/**
+ * Free @a ze.
+ *
+ * @param ze entry to free
+ */
+static void
+free_ze (struct GNUNET_NAMESTORE_ZoneIterator *ze)
+{
+ struct GNUNET_NAMESTORE_Handle *h = ze->h;
+
+ GNUNET_CONTAINER_DLL_remove (h->z_head,
+ h->z_tail,
+ ze);
+ if (NULL != ze->env)
+ GNUNET_MQ_discard (ze->env);
+ GNUNET_free (ze);
+}
+
+
+/**
+ * Check that @a rd_buf of lenght @a rd_len contains
+ * @a rd_count records.
+ *
+ * @param rd_len length of @a rd_buf
+ * @param rd_buf buffer with serialized records
+ * @param rd_count number of records expected
+ * @return #GNUNET_OK if @a rd_buf is well-formed
*/
static int
-handle_block_cache_response (struct GNUNET_NAMESTORE_QueueEntry *qe,
- const struct BlockCacheResponseMessage *msg,
- size_t size)
+check_rd (size_t rd_len,
+ const void *rd_buf,
+ unsigned int rd_count)
{
- int res;
+ struct GNUNET_GNSRECORD_Data rd[rd_count];
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Received `%s'\n",
- "BLOCK_CACHE_RESPONSE");
- res = ntohl (msg->op_result);
- /* TODO: add actual error message from namestore to response... */
- if (NULL != qe->cont)
- qe->cont (qe->cont_cls, res, (GNUNET_OK == res) ? NULL : _("Namestore failed to cache block"));
+ if (GNUNET_OK !=
+ GNUNET_GNSRECORD_records_deserialize (rd_len,
+ rd_buf,
+ rd_count,
+ rd))
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
return GNUNET_OK;
}
/**
- * Handle an incoming message of type #GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_STORE_RESPONSE
+ * Handle an incoming message of type
+ * #GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_STORE_RESPONSE
*
- * @param qe the respective entry in the message queue
+ * @param cls
* @param msg the message we received
- * @param size the message size
- * @return #GNUNET_OK on success, #GNUNET_SYSERR on error and we did NOT notify the client
*/
-static int
-handle_record_store_response (struct GNUNET_NAMESTORE_QueueEntry *qe,
- const struct RecordStoreResponseMessage* msg,
- size_t size)
+static void
+handle_record_store_response (void *cls,
+ const struct RecordStoreResponseMessage *msg)
{
+ struct GNUNET_NAMESTORE_Handle *h = cls;
+ struct GNUNET_NAMESTORE_QueueEntry *qe;
int res;
const char *emsg;
-
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Received `%s'\n",
- "RECORD_STORE_RESPONSE");
- /* TODO: add actual error message from namestore to response... */
+
+ qe = find_qe (h,
+ ntohl (msg->gns_header.r_id));
res = ntohl (msg->op_result);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Received RECORD_STORE_RESPONSE with result %d\n",
+ res);
+ /* TODO: add actual error message from namestore to response... */
if (GNUNET_SYSERR == res)
emsg = _("Namestore failed to store record\n");
else
emsg = NULL;
- if (NULL != qe->cont)
- qe->cont (qe->cont_cls, res, emsg);
- return GNUNET_OK;
+ if (NULL != qe->cont)
+ qe->cont (qe->cont_cls,
+ res,
+ emsg);
+ free_qe (qe);
}
/**
- * Handle an incoming message of type #GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_RESULT
+ * Check validity of an incoming message of type
+ * #GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_LOOKUP_RESPONSE
*
- * @param qe the respective entry in the message queue
+ * @param cls
* @param msg the message we received
- * @param size the message size
- * @return #GNUNET_OK on success, #GNUNET_SYSERR on error and we did NOT notify the client
+ * @return #GNUNET_OK on success, #GNUNET_SYSERR on error
*/
static int
-handle_record_result (struct GNUNET_NAMESTORE_QueueEntry *qe,
- const struct RecordResultMessage *msg,
- size_t size)
+check_lookup_result (void *cls,
+ const struct LabelLookupResponseMessage *msg)
{
const char *name;
- const char *rd_tmp;
size_t exp_msg_len;
size_t msg_len;
size_t name_len;
size_t rd_len;
- unsigned int rd_count;
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Received `%s'\n",
- "RECORD_RESULT");
+ (void) cls;
rd_len = ntohs (msg->rd_len);
- rd_count = ntohs (msg->rd_count);
msg_len = ntohs (msg->gns_header.header.size);
name_len = ntohs (msg->name_len);
- GNUNET_break (0 == ntohs (msg->reserved));
- exp_msg_len = sizeof (struct RecordResultMessage) + name_len + rd_len;
+ exp_msg_len = sizeof (*msg) + name_len + rd_len;
if (msg_len != exp_msg_len)
{
GNUNET_break (0);
GNUNET_break (0);
return GNUNET_SYSERR;
}
- rd_tmp = &name[name_len];
+ if (GNUNET_NO == ntohs (msg->found))
{
- struct GNUNET_NAMESTORE_RecordData rd[rd_count];
-
- if (GNUNET_OK != GNUNET_NAMESTORE_records_deserialize(rd_len, rd_tmp, rd_count, rd))
+ if (0 != ntohs (msg->rd_count))
{
GNUNET_break (0);
return GNUNET_SYSERR;
}
- if (0 == name_len)
- name = NULL;
- if (NULL != qe->proc)
- qe->proc (qe->proc_cls,
- &msg->private_key,
- name,
- rd_count,
- (rd_count > 0) ? rd : NULL);
+ return GNUNET_OK;
}
- return GNUNET_OK;
+ return check_rd (rd_len,
+ &name[name_len],
+ ntohs (msg->rd_count));
}
/**
- * Handle an incoming message of type #GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE.
+ * Handle an incoming message of type
+ * #GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_LOOKUP_RESPONSE
*
- * @param qe the respective entry in the message queue
+ * @param cls
* @param msg the message we received
- * @param size the message size
- * @return #GNUNET_OK on success, #GNUNET_NO if we notified the client about
- * the error, #GNUNET_SYSERR on error and we did NOT notify the client
*/
-static int
-handle_zone_to_name_response (struct GNUNET_NAMESTORE_QueueEntry *qe,
- const struct ZoneToNameResponseMessage *msg,
- size_t size)
+static void
+handle_lookup_result (void *cls,
+ const struct LabelLookupResponseMessage *msg)
{
- int res;
+ struct GNUNET_NAMESTORE_Handle *h = cls;
+ struct GNUNET_NAMESTORE_QueueEntry *qe;
+ const char *name;
+ const char *rd_tmp;
size_t name_len;
- size_t rd_ser_len;
+ size_t rd_len;
unsigned int rd_count;
- const char *name_tmp;
- const char *rd_tmp;
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Received `%s'\n",
- "ZONE_TO_NAME_RESPONSE");
- res = ntohs (msg->res);
- switch (res)
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Received RECORD_LOOKUP_RESULT\n");
+ qe = find_qe (h,
+ ntohl (msg->gns_header.r_id));
+ if (NULL == qe)
+ return;
+ rd_len = ntohs (msg->rd_len);
+ rd_count = ntohs (msg->rd_count);
+ name_len = ntohs (msg->name_len);
+ name = (const char *) &msg[1];
+ if (GNUNET_NO == ntohs (msg->found))
{
- case GNUNET_SYSERR:
- LOG (GNUNET_ERROR_TYPE_DEBUG, "An error occured during zone to name operation\n");
- break;
- case GNUNET_NO:
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Namestore has no result for zone to name mapping \n");
- break;
- case GNUNET_YES:
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Namestore has result for zone to name mapping \n");
- name_len = ntohs (msg->name_len);
- rd_count = ntohs (msg->rd_count);
- rd_ser_len = ntohs (msg->rd_len);
- name_tmp = (const char *) &msg[1];
- if ( (name_len > 0) &&
- ('\0' != name_tmp[name_len -1]) )
- {
- GNUNET_break (0);
- return GNUNET_SYSERR;
- }
- rd_tmp = &name_tmp[name_len];
- {
- struct GNUNET_NAMESTORE_RecordData rd[rd_count];
- if (GNUNET_OK != GNUNET_NAMESTORE_records_deserialize(rd_ser_len, rd_tmp, rd_count, rd))
- {
- GNUNET_break (0);
- return GNUNET_SYSERR;
- }
- /* normal end, call continuation with result */
- if (NULL != qe->proc)
- qe->proc (qe->proc_cls,
- &msg->zone,
- name_tmp,
- rd_count, rd);
- /* return is important here: break would call continuation with error! */
- return GNUNET_OK;
- }
- default:
- GNUNET_break (0);
- return GNUNET_SYSERR;
+ /* label was not in namestore */
+ if (NULL != qe->proc)
+ qe->proc (qe->proc_cls,
+ &msg->private_key,
+ name,
+ 0,
+ NULL);
+ free_qe (qe);
+ return;
}
- /* error case, call continuation with error */
- if (NULL != qe->proc)
- qe->proc (qe->proc_cls, NULL, NULL, 0, NULL);
- return GNUNET_OK;
-}
-
-/**
- * Handle incoming messages for record operations
- *
- * @param qe the respective zone iteration handle
- * @param msg the message we received
- * @param type the message type in host byte order
- * @param size the message size
- * @return #GNUNET_OK on success, #GNUNET_NO if we notified the client about
- * the error, #GNUNET_SYSERR on error and we did NOT notify the client
- */
-static int
-manage_record_operations (struct GNUNET_NAMESTORE_QueueEntry *qe,
- const struct GNUNET_MessageHeader *msg,
- uint16_t type,
- size_t size)
-{
- /* handle different message type */
- switch (type)
+ rd_tmp = &name[name_len];
{
- case GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_BLOCK_RESPONSE:
- if (size < sizeof (struct LookupBlockResponseMessage))
- {
- GNUNET_break (0);
- return GNUNET_SYSERR;
- }
- return handle_lookup_block_response (qe, (const struct LookupBlockResponseMessage *) msg, size);
- case GNUNET_MESSAGE_TYPE_NAMESTORE_BLOCK_CACHE_RESPONSE:
- if (size != sizeof (struct BlockCacheResponseMessage))
- {
- GNUNET_break (0);
- return GNUNET_SYSERR;
- }
- return handle_block_cache_response (qe, (const struct BlockCacheResponseMessage *) msg, size);
- case GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_STORE_RESPONSE:
- if (size != sizeof (struct RecordStoreResponseMessage))
- {
- GNUNET_break (0);
- return GNUNET_SYSERR;
- }
- return handle_record_store_response (qe, (const struct RecordStoreResponseMessage *) msg, size);
- case GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE:
- if (size < sizeof (struct ZoneToNameResponseMessage))
- {
- GNUNET_break (0);
- return GNUNET_SYSERR;
- }
- return handle_zone_to_name_response (qe, (const struct ZoneToNameResponseMessage *) msg, size);
- case GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_RESULT:
- if (size < sizeof (struct RecordResultMessage))
- {
- GNUNET_break (0);
- return GNUNET_SYSERR;
- }
- return handle_record_result (qe, (const struct RecordResultMessage *) msg, size);
- default:
- GNUNET_break (0);
- return GNUNET_SYSERR;
+ struct GNUNET_GNSRECORD_Data rd[rd_count];
+
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_GNSRECORD_records_deserialize (rd_len,
+ rd_tmp,
+ rd_count,
+ rd));
+ if (0 == name_len)
+ name = NULL;
+ if (NULL != qe->proc)
+ qe->proc (qe->proc_cls,
+ &msg->private_key,
+ name,
+ rd_count,
+ (rd_count > 0) ? rd : NULL);
}
+ free_qe (qe);
}
/**
- * Handle a response from NAMESTORE service for a zone iteration request
+ * Handle an incoming message of type
+ * #GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_RESULT
*
- * @param ze the respective iterator for this operation
- * @param msg the message containing the respoonse
- * @param size the message size
- * @return #GNUNET_YES on success, @a ze should be kept, #GNUNET_NO on success if @a ze should
- * not be kept any longer, #GNUNET_SYSERR on error (disconnect) and @a ze should be kept
+ * @param cls
+ * @param msg the message we received
+ * @return #GNUNET_OK on success, #GNUNET_SYSERR on error
*/
static int
-handle_zone_iteration_response (struct GNUNET_NAMESTORE_ZoneIterator *ze,
- const struct RecordResultMessage *msg,
- size_t size)
+check_record_result (void *cls,
+ const struct RecordResultMessage *msg)
{
- static struct GNUNET_CRYPTO_EccPrivateKey priv_dummy;
+ const char *name;
size_t msg_len;
- size_t exp_msg_len;
size_t name_len;
size_t rd_len;
- unsigned rd_count;
- const char *name_tmp;
- const char *rd_ser_tmp;
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Received `%s'\n",
- "ZONE_ITERATION_RESPONSE");
- msg_len = ntohs (msg->gns_header.header.size);
+ (void) cls;
rd_len = ntohs (msg->rd_len);
- rd_count = ntohs (msg->rd_count);
+ msg_len = ntohs (msg->gns_header.header.size);
name_len = ntohs (msg->name_len);
- exp_msg_len = sizeof (struct RecordResultMessage) + name_len + rd_len;
- if (msg_len != exp_msg_len)
+ if (0 != ntohs (msg->reserved))
{
GNUNET_break (0);
return GNUNET_SYSERR;
}
- if ((0 == name_len) && (0 == (memcmp (&msg->private_key, &priv_dummy, sizeof (priv_dummy)))))
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Zone iteration is completed!\n");
- if (NULL != ze->proc)
- ze->proc (ze->proc_cls, NULL, NULL, 0, NULL);
- return GNUNET_NO;
- }
- name_tmp = (const char *) &msg[1];
- if ((name_tmp[name_len -1] != '\0') || (name_len > MAX_NAME_LEN))
+ if (msg_len != sizeof (struct RecordResultMessage) + name_len + rd_len)
{
GNUNET_break (0);
return GNUNET_SYSERR;
}
- rd_ser_tmp = (const char *) &name_tmp[name_len];
- {
- struct GNUNET_NAMESTORE_RecordData rd[rd_count];
-
- if (GNUNET_OK != GNUNET_NAMESTORE_records_deserialize (rd_len, rd_ser_tmp, rd_count, rd))
- {
- GNUNET_break (0);
- return GNUNET_SYSERR;
- }
- if (NULL != ze->proc)
- ze->proc (ze->proc_cls, &msg->private_key, name_tmp, rd_count, rd);
- return GNUNET_YES;
- }
-}
-
-
-/**
- * Handle incoming messages for zone iterations
- *
- * @param ze the respective zone iteration handle
- * @param msg the message we received
- * @param type the message type in HBO
- * @param size the message size
- * @return #GNUNET_YES on success, @a ze should be kept, #GNUNET_NO on success if @a ze should
- * not be kept any longer, #GNUNET_SYSERR on error (disconnect) and @a ze should be kept
- */
-static int
-manage_zone_operations (struct GNUNET_NAMESTORE_ZoneIterator *ze,
- const struct GNUNET_MessageHeader *msg,
- int type, size_t size)
-{
- /* handle different message type */
- switch (type)
+ name = (const char *) &msg[1];
+ if ( (name_len > 0) &&
+ ('\0' != name[name_len -1]) )
{
- case GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_RESULT:
- if (size < sizeof (struct RecordResultMessage))
- {
- GNUNET_break (0);
- return GNUNET_SYSERR;
- }
- return handle_zone_iteration_response (ze, (const struct RecordResultMessage *) msg, size);
- default:
GNUNET_break (0);
return GNUNET_SYSERR;
}
+ return check_rd (rd_len,
+ &name[name_len],
+ ntohs (msg->rd_count));
}
/**
- * Type of a function to call when we receive a message
- * from the service.
+ * Handle an incoming message of type
+ * #GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_RESULT
*
- * @param cls the `struct GNUNET_NAMESTORE_SchedulingHandle`
- * @param msg message received, NULL on timeout or fatal error
+ * @param cls
+ * @param msg the message we received
*/
static void
-process_namestore_message (void *cls,
- const struct GNUNET_MessageHeader *msg)
+handle_record_result (void *cls,
+ const struct RecordResultMessage *msg)
{
+ static struct GNUNET_CRYPTO_EcdsaPrivateKey priv_dummy;
struct GNUNET_NAMESTORE_Handle *h = cls;
- const struct GNUNET_NAMESTORE_Header *gm;
struct GNUNET_NAMESTORE_QueueEntry *qe;
struct GNUNET_NAMESTORE_ZoneIterator *ze;
- uint16_t size;
- uint16_t type;
- uint32_t r_id;
- int ret;
+ const char *name;
+ const char *rd_tmp;
+ size_t name_len;
+ size_t rd_len;
+ unsigned int rd_count;
- if (NULL == msg)
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Received RECORD_RESULT\n");
+ rd_len = ntohs (msg->rd_len);
+ rd_count = ntohs (msg->rd_count);
+ name_len = ntohs (msg->name_len);
+ ze = find_zi (h,
+ ntohl (msg->gns_header.r_id));
+ qe = find_qe (h,
+ ntohl (msg->gns_header.r_id));
+ if ( (NULL == ze) &&
+ (NULL == qe) )
+ return; /* rid not found */
+ if ( (NULL != ze) &&
+ (NULL != qe) )
{
+ GNUNET_break (0); /* rid ambigous */
force_reconnect (h);
return;
}
- size = ntohs (msg->size);
- type = ntohs (msg->type);
- if (size < sizeof (struct GNUNET_NAMESTORE_Header))
- {
- GNUNET_break_op (0);
- GNUNET_CLIENT_receive (h->client, &process_namestore_message, h,
- GNUNET_TIME_UNIT_FOREVER_REL);
- return;
- }
- gm = (const struct GNUNET_NAMESTORE_Header *) msg;
- r_id = ntohl (gm->r_id);
-
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Received message type %u size %u op %u\n",
- (unsigned int) type,
- (unsigned int) size,
- (unsigned int) r_id);
-
- /* Is it a record related operation ? */
- for (qe = h->op_head; qe != NULL; qe = qe->next)
- if (qe->op_id == r_id)
- break;
- if (NULL != qe)
+ if ( (0 == name_len) &&
+ (0 == (memcmp (&msg->private_key,
+ &priv_dummy,
+ sizeof (priv_dummy)))) )
{
- ret = manage_record_operations (qe, msg, type, size);
- if (GNUNET_OK != ret)
- {
- /* protocol error, need to reconnect */
- h->reconnect = GNUNET_YES;
- }
- if (GNUNET_SYSERR != ret)
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Zone iteration completed!\n");
+ if (NULL == ze)
{
- /* client was notified about success or failure, clean up 'qe' */
- GNUNET_CONTAINER_DLL_remove (h->op_head,
- h->op_tail,
- qe);
- GNUNET_free (qe);
+ GNUNET_break (0);
+ force_reconnect (h);
+ return;
}
+ if (NULL != ze->finish_cb)
+ ze->finish_cb (ze->finish_cb_cls);
+ free_ze (ze);
+ return;
}
- /* Is it a zone iteration operation? */
- for (ze = h->z_head; ze != NULL; ze = ze->next)
- if (ze->op_id == r_id)
- break;
- if (NULL != ze)
+
+ name = (const char *) &msg[1];
+ rd_tmp = &name[name_len];
{
- ret = manage_zone_operations (ze, msg, type, size);
- if (GNUNET_NO == ret)
+ struct GNUNET_GNSRECORD_Data rd[rd_count];
+
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_GNSRECORD_records_deserialize(rd_len,
+ rd_tmp,
+ rd_count,
+ rd));
+ if (0 == name_len)
+ name = NULL;
+ if (NULL != qe)
{
- /* end of iteration, clean up 'ze' */
- GNUNET_CONTAINER_DLL_remove (h->z_head,
- h->z_tail,
- ze);
- GNUNET_free (ze);
+ if (NULL != qe->proc)
+ qe->proc (qe->proc_cls,
+ &msg->private_key,
+ name,
+ rd_count,
+ (rd_count > 0) ? rd : NULL);
+ free_qe (qe);
+ return;
}
- if (GNUNET_SYSERR == ret)
+ if (NULL != ze)
{
- /* protocol error, need to reconnect */
- h->reconnect = GNUNET_YES;
+ if (NULL != ze->proc)
+ ze->proc (ze->proc_cls,
+ &msg->private_key,
+ name,
+ rd_count,
+ rd);
+ return;
}
}
- if (GNUNET_YES == h->reconnect)
- {
- force_reconnect (h);
- return;
- }
- GNUNET_CLIENT_receive (h->client, &process_namestore_message, h,
- GNUNET_TIME_UNIT_FOREVER_REL);
+ GNUNET_assert (0);
}
/**
- * Transmit messages from the message queue to the service
- * (if there are any, and if we are not already trying).
+ * Handle an incoming message of type
+ * #GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE.
*
- * @param h handle to use
+ * @param qe the respective entry in the message queue
+ * @param msg the message we received
+ * @return #GNUNET_OK on success, #GNUNET_SYSERR if message malformed
*/
-static void
-do_transmit (struct GNUNET_NAMESTORE_Handle *h);
+static int
+check_zone_to_name_response (void *cls,
+ const struct ZoneToNameResponseMessage *msg)
+{
+ size_t name_len;
+ size_t rd_ser_len;
+ const char *name_tmp;
+
+ (void) cls;
+ if (GNUNET_OK != ntohs (msg->res))
+ return GNUNET_OK;
+ name_len = ntohs (msg->name_len);
+ rd_ser_len = ntohs (msg->rd_len);
+ if (ntohs (msg->gns_header.header.size) !=
+ sizeof (struct ZoneToNameResponseMessage) + name_len + rd_ser_len)
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ name_tmp = (const char *) &msg[1];
+ if ( (name_len > 0) &&
+ ('\0' != name_tmp[name_len -1]) )
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ return check_rd (rd_ser_len,
+ &name_tmp[name_len],
+ ntohs (msg->rd_count));
+}
/**
- * We can now transmit a message to NAMESTORE. Do it.
+ * Handle an incoming message of type
+ * #GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE.
*
- * @param cls the `struct GNUNET_NAMESTORE_Handle`
- * @param size number of bytes we can transmit
- * @param buf where to copy the messages
- * @return number of bytes copied into buf
+ * @param cls
+ * @param msg the message we received
*/
-static size_t
-transmit_message_to_namestore (void *cls, size_t size, void *buf)
+static void
+handle_zone_to_name_response (void *cls,
+ const struct ZoneToNameResponseMessage *msg)
{
struct GNUNET_NAMESTORE_Handle *h = cls;
- struct PendingMessage *p;
- size_t ret;
- char *cbuf;
+ struct GNUNET_NAMESTORE_QueueEntry *qe;
+ int res;
+ size_t name_len;
+ size_t rd_ser_len;
+ unsigned int rd_count;
+ const char *name_tmp;
+ const char *rd_tmp;
- h->th = NULL;
- if ((0 == size) || (NULL == buf))
- {
- force_reconnect (h);
- return 0;
- }
- ret = 0;
- cbuf = buf;
- while ((NULL != (p = h->pending_head)) && (p->size <= size))
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Received ZONE_TO_NAME_RESPONSE\n");
+ qe = find_qe (h,
+ ntohl (msg->gns_header.r_id));
+ res = ntohs (msg->res);
+ switch (res)
{
- memcpy (&cbuf[ret], &p[1], p->size);
- ret += p->size;
- size -= p->size;
- GNUNET_CONTAINER_DLL_remove (h->pending_head, h->pending_tail, p);
- if (GNUNET_NO == h->is_receiving)
+ case GNUNET_SYSERR:
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "An error occured during zone to name operation\n");
+ break;
+ case GNUNET_NO:
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Namestore has no result for zone to name mapping \n");
+ if (NULL != qe->proc)
+ qe->proc (qe->proc_cls, &msg->zone, NULL, 0, NULL);
+ free_qe (qe);
+ return;
+ case GNUNET_YES:
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Namestore has result for zone to name mapping \n");
+ name_len = ntohs (msg->name_len);
+ rd_count = ntohs (msg->rd_count);
+ rd_ser_len = ntohs (msg->rd_len);
+ name_tmp = (const char *) &msg[1];
+ rd_tmp = &name_tmp[name_len];
{
- h->is_receiving = GNUNET_YES;
- GNUNET_CLIENT_receive (h->client,
- &process_namestore_message, h,
- GNUNET_TIME_UNIT_FOREVER_REL);
+ struct GNUNET_GNSRECORD_Data rd[rd_count];
+
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_GNSRECORD_records_deserialize (rd_ser_len,
+ rd_tmp,
+ rd_count,
+ rd));
+ /* normal end, call continuation with result */
+ if (NULL != qe->proc)
+ qe->proc (qe->proc_cls,
+ &msg->zone,
+ name_tmp,
+ rd_count,
+ rd);
+ /* return is important here: break would call continuation with error! */
+ free_qe (qe);
+ return;
}
- GNUNET_free (p);
+ default:
+ GNUNET_break (0);
+ force_reconnect (h);
+ return;
}
- do_transmit (h);
- return ret;
+ /* error case, call continuation with error */
+ if (NULL != qe->error_cb)
+ qe->error_cb (qe->error_cb_cls);
+ free_qe (qe);
}
+
/**
- * Transmit messages from the message queue to the service
- * (if there are any, and if we are not already trying).
+ * Generic error handler, called with the appropriate error code and
+ * the same closure specified at the creation of the message queue.
+ * Not every message queue implementation supports an error handler.
*
- * @param h handle to use
+ * @param cls closure with the `struct GNUNET_NAMESTORE_Handle *`
+ * @param error error code
*/
static void
-do_transmit (struct GNUNET_NAMESTORE_Handle *h)
+mq_error_handler (void *cls,
+ enum GNUNET_MQ_Error error)
{
- struct PendingMessage *p;
-
- if (NULL != h->th)
- return; /* transmission request already pending */
- if (NULL == (p = h->pending_head))
- return; /* transmission queue empty */
- if (NULL == h->client)
- return; /* currently reconnecting */
- h->th = GNUNET_CLIENT_notify_transmit_ready (h->client, p->size,
- GNUNET_TIME_UNIT_FOREVER_REL,
- GNUNET_NO, &transmit_message_to_namestore,
- h);
+ struct GNUNET_NAMESTORE_Handle *h = cls;
+
+ (void) error;
+ force_reconnect (h);
}
static void
reconnect (struct GNUNET_NAMESTORE_Handle *h)
{
- GNUNET_assert (NULL == h->client);
- h->client = GNUNET_CLIENT_connect ("namestore", h->cfg);
- GNUNET_assert (NULL != h->client);
- do_transmit (h);
+ struct GNUNET_MQ_MessageHandler handlers[] = {
+ GNUNET_MQ_hd_fixed_size (record_store_response,
+ GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_STORE_RESPONSE,
+ struct RecordStoreResponseMessage,
+ h),
+ GNUNET_MQ_hd_var_size (zone_to_name_response,
+ GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME_RESPONSE,
+ struct ZoneToNameResponseMessage,
+ h),
+ GNUNET_MQ_hd_var_size (record_result,
+ GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_RESULT,
+ struct RecordResultMessage,
+ h),
+ GNUNET_MQ_hd_var_size (lookup_result,
+ GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_LOOKUP_RESPONSE,
+ struct LabelLookupResponseMessage,
+ h),
+ GNUNET_MQ_handler_end ()
+ };
+ struct GNUNET_NAMESTORE_ZoneIterator *it;
+ struct GNUNET_NAMESTORE_QueueEntry *qe;
+
+ GNUNET_assert (NULL == h->mq);
+ h->mq = GNUNET_CLIENT_connect (h->cfg,
+ "namestore",
+ handlers,
+ &mq_error_handler,
+ h);
+ if (NULL == h->mq)
+ return;
+ /* re-transmit pending requests that waited for a reconnect... */
+ for (it = h->z_head; NULL != it; it = it->next)
+ {
+ GNUNET_MQ_send (h->mq,
+ it->env);
+ it->env = NULL;
+ }
+ for (qe = h->op_head; NULL != qe; qe = qe->next)
+ {
+ GNUNET_MQ_send (h->mq,
+ qe->env);
+ qe->env = NULL;
+ }
}
* Re-establish the connection to the service.
*
* @param cls handle to use to re-connect.
- * @param tc scheduler context
*/
static void
-reconnect_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+reconnect_task (void *cls)
{
struct GNUNET_NAMESTORE_Handle *h = cls;
- h->reconnect_task = GNUNET_SCHEDULER_NO_TASK;
+ h->reconnect_task = NULL;
reconnect (h);
}
static void
force_reconnect (struct GNUNET_NAMESTORE_Handle *h)
{
- h->reconnect = GNUNET_NO;
- GNUNET_CLIENT_disconnect (h->client);
- h->is_receiving = GNUNET_NO;
- h->client = NULL;
- h->reconnect_task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_SECONDS,
+ struct GNUNET_NAMESTORE_ZoneIterator *ze;
+ struct GNUNET_NAMESTORE_QueueEntry *qe;
+
+ GNUNET_MQ_destroy (h->mq);
+ h->mq = NULL;
+ while (NULL != (ze = h->z_head))
+ {
+ if (NULL != ze->error_cb)
+ ze->error_cb (ze->error_cb_cls);
+ free_ze (ze);
+ }
+ while (NULL != (qe = h->op_head))
+ {
+ if (NULL != qe->error_cb)
+ qe->error_cb (qe->error_cb_cls);
+ if (NULL != qe->cont)
+ qe->cont (qe->cont_cls,
+ GNUNET_SYSERR,
+ "failure in communication with namestore service");
+ free_qe (qe);
+ }
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Reconnecting to namestore\n");
+ h->reconnect_delay = GNUNET_TIME_STD_BACKOFF (h->reconnect_delay);
+ h->reconnect_task = GNUNET_SCHEDULER_add_delayed (h->reconnect_delay,
&reconnect_task,
h);
}
h = GNUNET_new (struct GNUNET_NAMESTORE_Handle);
h->cfg = cfg;
- h->reconnect_task = GNUNET_SCHEDULER_add_now (&reconnect_task, h);
- h->last_op_id_used = 0;
+ reconnect (h);
+ if (NULL == h->mq)
+ {
+ GNUNET_free (h);
+ return NULL;
+ }
return h;
}
void
GNUNET_NAMESTORE_disconnect (struct GNUNET_NAMESTORE_Handle *h)
{
- struct PendingMessage *p;
struct GNUNET_NAMESTORE_QueueEntry *q;
struct GNUNET_NAMESTORE_ZoneIterator *z;
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Cleaning up\n");
- GNUNET_assert (NULL != h);
- while (NULL != (p = h->pending_head))
- {
- GNUNET_CONTAINER_DLL_remove (h->pending_head, h->pending_tail, p);
- GNUNET_free (p);
- }
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Cleaning up\n");
GNUNET_break (NULL == h->op_head);
while (NULL != (q = h->op_head))
{
- GNUNET_CONTAINER_DLL_remove (h->op_head, h->op_tail, q);
+ GNUNET_CONTAINER_DLL_remove (h->op_head,
+ h->op_tail,
+ q);
GNUNET_free (q);
}
GNUNET_break (NULL == h->z_head);
while (NULL != (z = h->z_head))
{
- GNUNET_CONTAINER_DLL_remove (h->z_head, h->z_tail, z);
+ GNUNET_CONTAINER_DLL_remove (h->z_head,
+ h->z_tail,
+ z);
GNUNET_free (z);
}
- if (NULL != h->client)
+ if (NULL != h->mq)
{
- GNUNET_CLIENT_disconnect (h->client);
- h->client = NULL;
+ GNUNET_MQ_destroy (h->mq);
+ h->mq = NULL;
}
- if (GNUNET_SCHEDULER_NO_TASK != h->reconnect_task)
+ if (NULL != h->reconnect_task)
{
GNUNET_SCHEDULER_cancel (h->reconnect_task);
- h->reconnect_task = GNUNET_SCHEDULER_NO_TASK;
+ h->reconnect_task = NULL;
}
GNUNET_free (h);
}
/**
- * Store an item in the namestore. If the item is already present,
- * it is replaced with the new record.
+ * Task launched to warn the user that the namestore is
+ * excessively slow and that a query was thus dropped.
*
- * @param h handle to the namestore
- * @param block block to store
- * @param cont continuation to call when done
- * @param cont_cls closure for cont
- * @return handle to abort the request
+ * @param cls a `struct GNUNET_NAMESTORE_QueueEntry *`
*/
-struct GNUNET_NAMESTORE_QueueEntry *
-GNUNET_NAMESTORE_block_cache (struct GNUNET_NAMESTORE_Handle *h,
- const struct GNUNET_NAMESTORE_Block *block,
- GNUNET_NAMESTORE_ContinuationWithStatus cont,
- void *cont_cls)
+static void
+warn_delay (void *cls)
{
- struct GNUNET_NAMESTORE_QueueEntry *qe;
- struct PendingMessage *pe;
- struct BlockCacheMessage *msg;
- uint32_t rid;
- size_t blen;
- size_t msg_size;
-
- GNUNET_assert (NULL != h);
- blen = ntohl (block->purpose.size) - sizeof (struct GNUNET_TIME_AbsoluteNBO);
- rid = get_op_id (h);
- qe = GNUNET_new (struct GNUNET_NAMESTORE_QueueEntry);
- qe->nsh = h;
- qe->cont = cont;
- qe->cont_cls = cont_cls;
- qe->op_id = rid;
- GNUNET_CONTAINER_DLL_insert_tail (h->op_head, h->op_tail, qe);
-
- /* setup msg */
- msg_size = sizeof (struct BlockCacheMessage) + blen;
- pe = GNUNET_malloc (sizeof (struct PendingMessage) + msg_size);
- pe->size = msg_size;
- msg = (struct BlockCacheMessage *) &pe[1];
- msg->gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_BLOCK_CACHE);
- msg->gns_header.header.size = htons (msg_size);
- msg->gns_header.r_id = htonl (rid);
- msg->expire = block->expiration_time;
- msg->signature = block->signature;
- msg->derived_key = block->derived_key;
- memcpy (&msg[1], &block[1], blen);
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Sending `%s' message with size %u\n",
- "NAMESTORE_BLOCK_CACHE",
- (unsigned int) msg_size);
- GNUNET_CONTAINER_DLL_insert_tail (h->pending_head, h->pending_tail, pe);
- do_transmit(h);
- return qe;
+ struct GNUNET_NAMESTORE_QueueEntry *qe = cls;
+
+ qe->timeout_task = NULL;
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Did not receive response from namestore after %s!\n",
+ GNUNET_STRINGS_relative_time_to_string (NAMESTORE_DELAY_TOLERANCE,
+ GNUNET_YES));
+ if (NULL != qe->cont)
+ {
+ qe->cont (qe->cont_cls,
+ GNUNET_SYSERR,
+ "timeout");
+ qe->cont = NULL;
+ }
+ GNUNET_NAMESTORE_cancel (qe);
}
* @param h handle to the namestore
* @param pkey private key of the zone
* @param label name that is being mapped (at most 255 characters long)
- * @param rd_count number of records in the 'rd' array
+ * @param rd_count number of records in the @a rd array
* @param rd array of records with data to store
* @param cont continuation to call when done
- * @param cont_cls closure for 'cont'
+ * @param cont_cls closure for @a cont
* @return handle to abort the request
*/
struct GNUNET_NAMESTORE_QueueEntry *
GNUNET_NAMESTORE_records_store (struct GNUNET_NAMESTORE_Handle *h,
- const struct GNUNET_CRYPTO_EccPrivateKey *pkey,
+ const struct GNUNET_CRYPTO_EcdsaPrivateKey *pkey,
const char *label,
unsigned int rd_count,
- const struct GNUNET_NAMESTORE_RecordData *rd,
+ const struct GNUNET_GNSRECORD_Data *rd,
GNUNET_NAMESTORE_ContinuationWithStatus cont,
void *cont_cls)
{
struct GNUNET_NAMESTORE_QueueEntry *qe;
- struct PendingMessage *pe;
+ struct GNUNET_MQ_Envelope *env;
char *name_tmp;
char *rd_ser;
- size_t rd_ser_len;
- size_t msg_size;
+ ssize_t rd_ser_len;
size_t name_len;
uint32_t rid;
struct RecordStoreMessage *msg;
+ ssize_t sret;
- GNUNET_assert (NULL != h);
- GNUNET_assert (NULL != pkey);
- GNUNET_assert (NULL != label);
name_len = strlen (label) + 1;
if (name_len > MAX_NAME_LEN)
{
GNUNET_break (0);
return NULL;
}
+ rd_ser_len = GNUNET_GNSRECORD_records_get_size (rd_count,
+ rd);
+ if (rd_ser_len < 0)
+ {
+ GNUNET_break (0);
+ return NULL;
+ }
+ if (rd_ser_len > UINT16_MAX)
+ {
+ GNUNET_break (0);
+ return NULL;
+ }
rid = get_op_id (h);
qe = GNUNET_new (struct GNUNET_NAMESTORE_QueueEntry);
- qe->nsh = h;
+ qe->h = h;
qe->cont = cont;
qe->cont_cls = cont_cls;
qe->op_id = rid;
- GNUNET_CONTAINER_DLL_insert_tail (h->op_head, h->op_tail, qe);
+ GNUNET_CONTAINER_DLL_insert_tail (h->op_head,
+ h->op_tail,
+ qe);
/* setup msg */
- rd_ser_len = GNUNET_NAMESTORE_records_get_size (rd_count, rd);
- msg_size = sizeof (struct RecordStoreMessage) + name_len + rd_ser_len;
- pe = GNUNET_malloc (sizeof (struct PendingMessage) + msg_size);
- pe->size = msg_size;
- msg = (struct RecordStoreMessage *) &pe[1];
- msg->gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_STORE);
- msg->gns_header.header.size = htons (msg_size);
+ env = GNUNET_MQ_msg_extra (msg,
+ name_len + rd_ser_len,
+ GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_STORE);
msg->gns_header.r_id = htonl (rid);
msg->name_len = htons (name_len);
msg->rd_count = htons (rd_count);
msg->private_key = *pkey;
name_tmp = (char *) &msg[1];
- memcpy (name_tmp, label, name_len);
+ GNUNET_memcpy (name_tmp,
+ label,
+ name_len);
rd_ser = &name_tmp[name_len];
- GNUNET_break (rd_ser_len == GNUNET_NAMESTORE_records_serialize (rd_count, rd, rd_ser_len, rd_ser));
-
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Sending `%s' message for name `%s' with size %u\n",
- "NAMESTORE_RECORD_STORE", label, msg_size);
- GNUNET_CONTAINER_DLL_insert_tail (h->pending_head, h->pending_tail, pe);
- do_transmit(h);
+ sret = GNUNET_GNSRECORD_records_serialize (rd_count,
+ rd,
+ rd_ser_len,
+ rd_ser);
+ if ( (0 > sret) ||
+ (sret != rd_ser_len) )
+ {
+ GNUNET_break (0);
+ GNUNET_free (env);
+ return NULL;
+ }
+ GNUNET_assert (rd_ser_len == (size_t) sret);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Sending NAMESTORE_RECORD_STORE message for name `%s' with %u records\n",
+ label,
+ rd_count);
+ qe->timeout_task = GNUNET_SCHEDULER_add_delayed (NAMESTORE_DELAY_TOLERANCE,
+ &warn_delay,
+ qe);
+ if (NULL == h->mq)
+ {
+ qe->env = env;
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "Delaying NAMESTORE_RECORD_STORE message as namestore is not ready!\n");
+ }
+ else
+ {
+ GNUNET_MQ_send (h->mq,
+ env);
+ }
return qe;
}
/**
- * Get a result for a particular key from the namestore. The processor
- * will only be called once.
+ * Set the desired nick name for a zone
+ *
+ * @param h handle to the namestore
+ * @param pkey private key of the zone
+ * @param nick the nick name to set
+ * @param cont continuation to call when done
+ * @param cont_cls closure for @a cont
+ * @return handle to abort the request
+ */
+struct GNUNET_NAMESTORE_QueueEntry *
+GNUNET_NAMESTORE_set_nick (struct GNUNET_NAMESTORE_Handle *h,
+ const struct GNUNET_CRYPTO_EcdsaPrivateKey *pkey,
+ const char *nick,
+ GNUNET_NAMESTORE_ContinuationWithStatus cont,
+ void *cont_cls)
+{
+ struct GNUNET_GNSRECORD_Data rd;
+
+ if (NULL == h->mq)
+ return NULL;
+ memset (&rd, 0, sizeof (rd));
+ rd.data = nick;
+ rd.data_size = strlen (nick) +1;
+ rd.record_type = GNUNET_GNSRECORD_TYPE_NICK;
+ rd.expiration_time = GNUNET_TIME_UNIT_FOREVER_ABS.abs_value_us;
+ rd.flags |= GNUNET_GNSRECORD_RF_PRIVATE;
+ return GNUNET_NAMESTORE_records_store (h,
+ pkey,
+ GNUNET_GNS_EMPTY_LABEL_AT,
+ 1,
+ &rd,
+ cont,
+ cont_cls);
+}
+
+
+/**
+ * Lookup an item in the namestore.
*
* @param h handle to the namestore
- * @param derived_hash hash of zone key combined with name to lookup
- * @param proc function to call on the matching block, or with
- * NULL if there is no matching block
- * @param proc_cls closure for proc
- * @return a handle that can be used to cancel
+ * @param pkey private key of the zone
+ * @param label name that is being mapped (at most 255 characters long)
+ * @param error_cb function to call on error (i.e. disconnect)
+ * @param error_cb_cls closure for @a error_cb
+ * @param rm function to call with the result (with 0 records if we don't have that label)
+ * @param rm_cls closure for @a rm
+ * @return handle to abort the request
*/
struct GNUNET_NAMESTORE_QueueEntry *
-GNUNET_NAMESTORE_lookup_block (struct GNUNET_NAMESTORE_Handle *h,
- const struct GNUNET_HashCode *derived_hash,
- GNUNET_NAMESTORE_BlockProcessor proc, void *proc_cls)
+GNUNET_NAMESTORE_records_lookup (struct GNUNET_NAMESTORE_Handle *h,
+ const struct GNUNET_CRYPTO_EcdsaPrivateKey *pkey,
+ const char *label,
+ GNUNET_SCHEDULER_TaskCallback error_cb,
+ void *error_cb_cls,
+ GNUNET_NAMESTORE_RecordMonitor rm,
+ void *rm_cls)
{
struct GNUNET_NAMESTORE_QueueEntry *qe;
- struct PendingMessage *pe;
- struct LookupBlockMessage *msg;
- size_t msg_size;
- uint32_t rid;
+ struct GNUNET_MQ_Envelope *env;
+ struct LabelLookupMessage *msg;
+ size_t label_len;
+
+ if (1 == (label_len = strlen (label) + 1))
+ {
+ GNUNET_break (0);
+ return NULL;
+ }
- GNUNET_assert (NULL != h);
- GNUNET_assert (NULL != derived_hash);
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Looking for block under %s\n",
- GNUNET_h2s (derived_hash));
- rid = get_op_id(h);
qe = GNUNET_new (struct GNUNET_NAMESTORE_QueueEntry);
- qe->nsh = h;
- qe->block_proc = proc;
- qe->block_proc_cls = proc_cls;
- qe->op_id = rid;
- GNUNET_CONTAINER_DLL_insert_tail (h->op_head, h->op_tail, qe);
-
- msg_size = sizeof (struct LookupBlockMessage);
- pe = GNUNET_malloc (sizeof (struct PendingMessage) + msg_size);
- pe->size = msg_size;
- msg = (struct LookupBlockMessage *) &pe[1];
- msg->gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_BLOCK);
- msg->gns_header.header.size = htons (msg_size);
- msg->gns_header.r_id = htonl (rid);
- msg->query = *derived_hash;
- GNUNET_CONTAINER_DLL_insert_tail (h->pending_head, h->pending_tail, pe);
- do_transmit(h);
+ qe->h = h;
+ qe->error_cb = error_cb;
+ qe->error_cb_cls = error_cb_cls;
+ qe->proc = rm;
+ qe->proc_cls = rm_cls;
+ qe->op_id = get_op_id(h);
+ GNUNET_CONTAINER_DLL_insert_tail (h->op_head,
+ h->op_tail,
+ qe);
+
+ env = GNUNET_MQ_msg_extra (msg,
+ label_len,
+ GNUNET_MESSAGE_TYPE_NAMESTORE_RECORD_LOOKUP);
+ msg->gns_header.r_id = htonl (qe->op_id);
+ msg->zone = *pkey;
+ msg->label_len = htonl (label_len);
+ GNUNET_memcpy (&msg[1],
+ label,
+ label_len);
+ if (NULL == h->mq)
+ qe->env = env;
+ else
+ GNUNET_MQ_send (h->mq,
+ env);
return qe;
}
* @param h handle to the namestore
* @param zone public key of the zone to look up in, never NULL
* @param value_zone public key of the target zone (value), never NULL
+ * @param error_cb function to call on error (i.e. disconnect)
+ * @param error_cb_cls closure for @a error_cb
* @param proc function to call on the matching records, or with
* NULL (rd_count == 0) if there are no matching records
- * @param proc_cls closure for proc
+ * @param proc_cls closure for @a proc
* @return a handle that can be used to
* cancel
*/
struct GNUNET_NAMESTORE_QueueEntry *
GNUNET_NAMESTORE_zone_to_name (struct GNUNET_NAMESTORE_Handle *h,
- const struct GNUNET_CRYPTO_EccPrivateKey *zone,
- const struct GNUNET_CRYPTO_EccPublicSignKey *value_zone,
- GNUNET_NAMESTORE_RecordMonitor proc, void *proc_cls)
+ const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *value_zone,
+ GNUNET_SCHEDULER_TaskCallback error_cb,
+ void *error_cb_cls,
+ GNUNET_NAMESTORE_RecordMonitor proc,
+ void *proc_cls)
{
struct GNUNET_NAMESTORE_QueueEntry *qe;
- struct PendingMessage *pe;
- struct ZoneToNameMessage * msg;
- size_t msg_size;
+ struct GNUNET_MQ_Envelope *env;
+ struct ZoneToNameMessage *msg;
uint32_t rid;
- GNUNET_assert (NULL != h);
- GNUNET_assert (NULL != zone);
- GNUNET_assert (NULL != value_zone);
rid = get_op_id(h);
qe = GNUNET_new (struct GNUNET_NAMESTORE_QueueEntry);
- qe->nsh = h;
+ qe->h = h;
+ qe->error_cb = error_cb;
+ qe->error_cb_cls = error_cb_cls;
qe->proc = proc;
qe->proc_cls = proc_cls;
qe->op_id = rid;
- GNUNET_CONTAINER_DLL_insert_tail (h->op_head, h->op_tail, qe);
-
- msg_size = sizeof (struct ZoneToNameMessage);
- pe = GNUNET_malloc (sizeof (struct PendingMessage) + msg_size);
- pe->size = msg_size;
- msg = (struct ZoneToNameMessage *) &pe[1];
- msg->gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME);
- msg->gns_header.header.size = htons (msg_size);
+ GNUNET_CONTAINER_DLL_insert_tail (h->op_head,
+ h->op_tail,
+ qe);
+
+ env = GNUNET_MQ_msg (msg,
+ GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_TO_NAME);
msg->gns_header.r_id = htonl (rid);
msg->zone = *zone;
msg->value_zone = *value_zone;
-
- /* transmit message */
- GNUNET_CONTAINER_DLL_insert_tail (h->pending_head, h->pending_tail, pe);
- do_transmit(h);
+ if (NULL == h->mq)
+ qe->env = env;
+ else
+ GNUNET_MQ_send (h->mq,
+ env);
return qe;
}
*
* @param h handle to the namestore
* @param zone zone to access, NULL for all zones
+ * @param error_cb function to call on error (i.e. disconnect)
+ * @param error_cb_cls closure for @a error_cb
* @param proc function to call on each name from the zone; it
* will be called repeatedly with a value (if available)
- * and always once at the end with a name of NULL.
* @param proc_cls closure for @a proc
+ * @param finish_cb function to call on completion
+ * @param finish_cb_cls closure for @a finish_cb
* @return an iterator handle to use for iteration
*/
struct GNUNET_NAMESTORE_ZoneIterator *
GNUNET_NAMESTORE_zone_iteration_start (struct GNUNET_NAMESTORE_Handle *h,
- const struct GNUNET_CRYPTO_EccPrivateKey *zone,
+ const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone,
+ GNUNET_SCHEDULER_TaskCallback error_cb,
+ void *error_cb_cls,
GNUNET_NAMESTORE_RecordMonitor proc,
- void *proc_cls)
+ void *proc_cls,
+ GNUNET_SCHEDULER_TaskCallback finish_cb,
+ void *finish_cb_cls)
{
struct GNUNET_NAMESTORE_ZoneIterator *it;
- struct PendingMessage *pe;
- struct ZoneIterationStartMessage * msg;
- size_t msg_size;
+ struct GNUNET_MQ_Envelope *env;
+ struct ZoneIterationStartMessage *msg;
uint32_t rid;
- GNUNET_assert (NULL != h);
- rid = get_op_id(h);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Sending ZONE_ITERATION_START message\n");
+ rid = get_op_id (h);
it = GNUNET_new (struct GNUNET_NAMESTORE_ZoneIterator);
it->h = h;
+ it->error_cb = error_cb;
+ it->error_cb_cls = error_cb_cls;
+ it->finish_cb = finish_cb;
+ it->finish_cb_cls = finish_cb_cls;
it->proc = proc;
it->proc_cls = proc_cls;
it->op_id = rid;
if (NULL != zone)
it->zone = *zone;
- GNUNET_CONTAINER_DLL_insert_tail (h->z_head, h->z_tail, it);
-
- msg_size = sizeof (struct ZoneIterationStartMessage);
- pe = GNUNET_malloc (sizeof (struct PendingMessage) + msg_size);
- pe->size = msg_size;
- msg = (struct ZoneIterationStartMessage *) &pe[1];
- msg->gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_START);
- msg->gns_header.header.size = htons (msg_size);
+ GNUNET_CONTAINER_DLL_insert_tail (h->z_head,
+ h->z_tail,
+ it);
+ env = GNUNET_MQ_msg (msg,
+ GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_START);
msg->gns_header.r_id = htonl (rid);
if (NULL != zone)
msg->zone = *zone;
- GNUNET_CONTAINER_DLL_insert_tail (h->pending_head, h->pending_tail, pe);
- do_transmit(h);
+ if (NULL == h->mq)
+ it->env = env;
+ else
+ GNUNET_MQ_send (h->mq,
+ env);
return it;
}
* for the next record.
*
* @param it the iterator
+ * @param limit number of records to return to the iterator in one shot
+ * (before #GNUNET_NAMESTORE_zone_iterator_next is to be called again)
*/
void
-GNUNET_NAMESTORE_zone_iterator_next (struct GNUNET_NAMESTORE_ZoneIterator *it)
+GNUNET_NAMESTORE_zone_iterator_next (struct GNUNET_NAMESTORE_ZoneIterator *it,
+ uint64_t limit)
{
- struct GNUNET_NAMESTORE_Handle *h;
- struct ZoneIterationNextMessage * msg;
- struct PendingMessage *pe;
- size_t msg_size;
-
- GNUNET_assert (NULL != it);
- h = it->h;
- msg_size = sizeof (struct ZoneIterationNextMessage);
- pe = GNUNET_malloc (sizeof (struct PendingMessage) + msg_size);
- pe->size = msg_size;
- msg = (struct ZoneIterationNextMessage *) &pe[1];
- msg->gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_NEXT);
- msg->gns_header.header.size = htons (msg_size);
+ struct GNUNET_NAMESTORE_Handle *h = it->h;
+ struct ZoneIterationNextMessage *msg;
+ struct GNUNET_MQ_Envelope *env;
+
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Sending ZONE_ITERATION_NEXT message with limit %llu\n",
+ (unsigned long long) limit);
+ env = GNUNET_MQ_msg (msg,
+ GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_NEXT);
msg->gns_header.r_id = htonl (it->op_id);
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "ZONE_ITERATION_NEXT");
- GNUNET_CONTAINER_DLL_insert_tail (h->pending_head, h->pending_tail, pe);
- do_transmit(h);
+ msg->limit = GNUNET_htonll (limit);
+ GNUNET_MQ_send (h->mq,
+ env);
}
void
GNUNET_NAMESTORE_zone_iteration_stop (struct GNUNET_NAMESTORE_ZoneIterator *it)
{
- struct GNUNET_NAMESTORE_Handle *h;
- struct PendingMessage *pe;
- size_t msg_size;
- struct ZoneIterationStopMessage * msg;
+ struct GNUNET_NAMESTORE_Handle *h = it->h;
+ struct GNUNET_MQ_Envelope *env;
+ struct ZoneIterationStopMessage *msg;
- GNUNET_assert (NULL != it);
- h = it->h;
- GNUNET_CONTAINER_DLL_remove (h->z_head,
- h->z_tail,
- it);
- msg_size = sizeof (struct ZoneIterationStopMessage);
- pe = GNUNET_malloc (sizeof (struct PendingMessage) + msg_size);
- pe->size = msg_size;
- msg = (struct ZoneIterationStopMessage *) &pe[1];
- msg->gns_header.header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_STOP);
- msg->gns_header.header.size = htons (msg_size);
- msg->gns_header.r_id = htonl (it->op_id);
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Sending `%s' message\n",
- "ZONE_ITERATION_STOP");
- GNUNET_CONTAINER_DLL_insert_tail (h->pending_head, h->pending_tail, pe);
- do_transmit(h);
- GNUNET_free (it);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Sending ZONE_ITERATION_STOP message\n");
+ if (NULL != h->mq)
+ {
+ env = GNUNET_MQ_msg (msg,
+ GNUNET_MESSAGE_TYPE_NAMESTORE_ZONE_ITERATION_STOP);
+ msg->gns_header.r_id = htonl (it->op_id);
+ GNUNET_MQ_send (h->mq,
+ env);
+ }
+ free_ze (it);
}
void
GNUNET_NAMESTORE_cancel (struct GNUNET_NAMESTORE_QueueEntry *qe)
{
- struct GNUNET_NAMESTORE_Handle *h = qe->nsh;
-
- GNUNET_assert (NULL != qe);
- GNUNET_CONTAINER_DLL_remove(h->op_head, h->op_tail, qe);
- GNUNET_free(qe);
+ free_qe (qe);
}
projects / oweals / gnunet.git / blobdiff