/*
- This file is part of GNUnet.
- (C) 2013 Christian Grothoff (and other contributing authors)
-
- GNUnet is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public Liceidentity as published
- by the Free Software Foundation; either version 3, or (at your
- option) any later version.
-
- GNUnet is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public Liceidentity for more details.
-
- You should have received a copy of the GNU General Public Liceidentity
- 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.
-*/
+ * This file is part of GNUnet
+ * Copyright (C) 2013 Christian Grothoff (and other contributing authors)
+ *
+ * GNUnet is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 3, 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., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
/**
* @file psycstore/psycstore_api.c
* @author Christian Grothoff
*/
+#include <inttypes.h>
+
#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_constants.h"
#include "gnunet_protocols.h"
#include "gnunet_psycstore_service.h"
+#include "gnunet_multicast_service.h"
#include "psycstore.h"
#define LOG(kind,...) GNUNET_log_from (kind, "psycstore-api",__VA_ARGS__)
+typedef void (*DataCallback) ();
-/**
+/**
* Handle for an operation with the PSYCstore service.
*/
struct GNUNET_PSYCSTORE_OperationHandle
* Main PSYCstore handle.
*/
struct GNUNET_PSYCSTORE_Handle *h;
-
+
/**
* We keep operations in a DLL.
*/
*/
struct GNUNET_PSYCSTORE_OperationHandle *prev;
- /**
- * Message to send to the PSYCstore service.
- * Allocated at the end of this struct.
- */
- const struct GNUNET_MessageHeader *msg;
-
/**
* Continuation to invoke with the result of an operation.
*/
GNUNET_PSYCSTORE_ResultCallback res_cb;
/**
- * Continuation to invoke with the result of an operation returning a fragment.
+ * Continuation to invoke with the result of an operation returning data.
*/
- GNUNET_PSYCSTORE_FragmentCallback frag_cb;
+ DataCallback data_cb;
/**
- * Continuation to invoke with the result of an operation returning a state variable.
+ * Closure for the callbacks.
*/
- GNUNET_PSYCSTORE_StateCallback state_cb;
+ void *cls;
/**
- * Closure for the callbacks.
+ * Operation ID.
*/
- void *cls;
+ uint64_t op_id;
+ /**
+ * Message to send to the PSYCstore service.
+ * Allocated at the end of this struct.
+ */
+ const struct GNUNET_MessageHeader *msg;
};
struct GNUNET_CLIENT_Connection *client;
/**
- * Head of active operations.
- */
+ * Head of operations to transmit.
+ */
+ struct GNUNET_PSYCSTORE_OperationHandle *transmit_head;
+
+ /**
+ * Tail of operations to transmit.
+ */
+ struct GNUNET_PSYCSTORE_OperationHandle *transmit_tail;
+
+ /**
+ * Head of active operations waiting for response.
+ */
struct GNUNET_PSYCSTORE_OperationHandle *op_head;
/**
- * Tail of active operations.
- */
+ * Tail of active operations waiting for response.
+ */
struct GNUNET_PSYCSTORE_OperationHandle *op_tail;
/**
/**
* Task doing exponential back-off trying to reconnect.
*/
- GNUNET_SCHEDULER_TaskIdentifier reconnect_task;
+ struct GNUNET_SCHEDULER_Task * reconnect_task;
/**
* Time for next connect retry.
struct GNUNET_TIME_Relative reconnect_delay;
/**
- * Are we polling for incoming messages right now?
+ * Last operation ID used.
*/
- int in_receive;
+ uint64_t last_op_id;
+ /**
+ * Are we polling for incoming messages right now?
+ */
+ uint8_t in_receive;
};
+/**
+ * Get a fresh operation ID to distinguish between PSYCstore requests.
+ *
+ * @param h Handle to the PSYCstore service.
+ * @return next operation id to use
+ */
+static uint64_t
+get_next_op_id (struct GNUNET_PSYCSTORE_Handle *h)
+{
+ return h->last_op_id++;
+}
+
+
+/**
+ * Find operation by ID.
+ *
+ * @return OperationHandle if found, or NULL otherwise.
+ */
+static struct GNUNET_PSYCSTORE_OperationHandle *
+find_op_by_id (struct GNUNET_PSYCSTORE_Handle *h, uint64_t op_id)
+{
+ struct GNUNET_PSYCSTORE_OperationHandle *op = h->op_head;
+ while (NULL != op)
+ {
+ if (op->op_id == op_id)
+ return op;
+ op = op->next;
+ }
+ return NULL;
+}
+
+
/**
* Try again to connect to the PSYCstore service.
*
* @param tc scheduler context
*/
static void
-reconnect (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc);
+reconnect (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
/**
static void
reschedule_connect (struct GNUNET_PSYCSTORE_Handle *h)
{
- GNUNET_assert (h->reconnect_task == GNUNET_SCHEDULER_NO_TASK);
+ GNUNET_assert (h->reconnect_task == NULL);
if (NULL != h->th)
{
}
+/**
+ * Schedule transmission of the next message from our queue.
+ *
+ * @param h PSYCstore handle
+ */
+static void
+transmit_next (struct GNUNET_PSYCSTORE_Handle *h);
+
+
/**
* Type of a function to call when we receive a message
* from the service.
* @param msg message received, NULL on timeout or fatal error
*/
static void
-message_handler (void *cls,
- const struct GNUNET_MessageHeader *msg)
+message_handler (void *cls, const struct GNUNET_MessageHeader *msg)
{
struct GNUNET_PSYCSTORE_Handle *h = cls;
struct GNUNET_PSYCSTORE_OperationHandle *op;
- const struct ResultCodeMessage *rcm;
+ const struct OperationResult *opres;
+ const struct CountersResult *cres;
+ const struct FragmentResult *fres;
+ const struct StateResult *sres;
const char *str;
- uint16_t size;
if (NULL == msg)
{
return;
}
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Received message of type %d from PSYCstore service\n",
+ "Received message of type %d from PSYCstore service.\n",
ntohs (msg->type));
- size = ntohs (msg->size);
- switch (ntohs (msg->type))
+ uint16_t size = ntohs (msg->size);
+ uint16_t type = ntohs (msg->type);
+ switch (type)
{
case GNUNET_MESSAGE_TYPE_PSYCSTORE_RESULT_CODE:
- if (size < sizeof (struct ResultCodeMessage))
+ if (size < sizeof (struct OperationResult))
{
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ "Received message of type %d with length %lu bytes. "
+ "Expected >= %lu\n",
+ type, size, sizeof (struct OperationResult));
GNUNET_break (0);
reschedule_connect (h);
return;
}
- rcm = (const struct ResultCodeMessage *) msg;
- str = (const char *) &rcm[1];
- if ( (size > sizeof (struct ResultCodeMessage)) &&
- ('\0' != str[size - sizeof (struct ResultCodeMessage) - 1]) )
+
+ opres = (const struct OperationResult *) msg;
+ str = (const char *) &opres[1];
+ if ( (size > sizeof (struct OperationResult)) &&
+ ('\0' != str[size - sizeof (struct OperationResult) - 1]) )
{
GNUNET_break (0);
reschedule_connect (h);
return;
}
- if (size == sizeof (struct ResultCodeMessage))
- str = NULL;
+ if (size == sizeof (struct OperationResult))
+ str = "";
- op = h->op_head;
- GNUNET_CONTAINER_DLL_remove (h->op_head,
- h->op_tail,
- op);
- GNUNET_CLIENT_receive (h->client, &message_handler, h,
- GNUNET_TIME_UNIT_FOREVER_REL);
- if (NULL != op->res_cb)
- op->res_cb (op->cls, rcm->result_code , str);
- GNUNET_free (op);
+ op = find_op_by_id (h, GNUNET_ntohll (opres->op_id));
+ if (NULL == op)
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "No callback registered for operation with ID %" PRIu64 ".\n",
+ type, GNUNET_ntohll (opres->op_id));
+ }
+ else
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Received result message (type %d) with operation ID: %" PRIu64 "\n",
+ type, op->op_id);
+
+ int64_t result_code = GNUNET_ntohll (opres->result_code) + INT64_MIN;
+ GNUNET_CONTAINER_DLL_remove (h->op_head, h->op_tail, op);
+ if (NULL != op->res_cb)
+ {
+ const struct StateSyncRequest *ssreq;
+ switch (ntohs (op->msg->type))
+ {
+ case GNUNET_MESSAGE_TYPE_PSYCSTORE_STATE_SYNC:
+ ssreq = (const struct StateSyncRequest *) op->msg;
+ if (!(ssreq->flags & STATE_OP_LAST
+ || GNUNET_OK != result_code))
+ op->res_cb = NULL;
+ break;
+ }
+ }
+ if (NULL != op->res_cb)
+ op->res_cb (op->cls, result_code, str, size - sizeof (*opres));
+ GNUNET_free (op);
+ }
break;
+
+ case GNUNET_MESSAGE_TYPE_PSYCSTORE_RESULT_COUNTERS:
+ if (size != sizeof (struct CountersResult))
+ {
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ "Received message of type %d with length %lu bytes. "
+ "Expected %lu\n",
+ type, size, sizeof (struct CountersResult));
+ GNUNET_break (0);
+ reschedule_connect (h);
+ return;
+ }
+
+ cres = (const struct CountersResult *) msg;
+
+ op = find_op_by_id (h, GNUNET_ntohll (cres->op_id));
+ if (NULL == op)
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "No callback registered for operation with ID %" PRIu64 ".\n",
+ type, GNUNET_ntohll (cres->op_id));
+ }
+ else
+ {
+ GNUNET_CONTAINER_DLL_remove (h->op_head, h->op_tail, op);
+ if (NULL != op->data_cb)
+ ((GNUNET_PSYCSTORE_CountersCallback)
+ op->data_cb) (op->cls,
+ ntohl (cres->result_code) + INT32_MIN,
+ GNUNET_ntohll (cres->max_fragment_id),
+ GNUNET_ntohll (cres->max_message_id),
+ GNUNET_ntohll (cres->max_group_generation),
+ GNUNET_ntohll (cres->max_state_message_id));
+ GNUNET_free (op);
+ }
+ break;
+
+ case GNUNET_MESSAGE_TYPE_PSYCSTORE_RESULT_FRAGMENT:
+ if (size < sizeof (struct FragmentResult))
+ {
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ "Received message of type %d with length %lu bytes. "
+ "Expected >= %lu\n",
+ type, size, sizeof (struct FragmentResult));
+ GNUNET_break (0);
+ reschedule_connect (h);
+ return;
+ }
+
+ fres = (const struct FragmentResult *) msg;
+ struct GNUNET_MULTICAST_MessageHeader *mmsg =
+ (struct GNUNET_MULTICAST_MessageHeader *) &fres[1];
+ if (size != sizeof (struct FragmentResult) + ntohs (mmsg->header.size))
+ {
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ "Received message of type %d with length %lu bytes. "
+ "Expected = %lu\n",
+ type, size,
+ sizeof (struct FragmentResult) + ntohs (mmsg->header.size));
+ GNUNET_break (0);
+ reschedule_connect (h);
+ return;
+ }
+
+ op = find_op_by_id (h, GNUNET_ntohll (fres->op_id));
+ if (NULL == op)
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "No callback registered for operation with ID %" PRIu64 ".\n",
+ type, GNUNET_ntohll (fres->op_id));
+ }
+ else
+ {
+ if (NULL != op->data_cb)
+ ((GNUNET_PSYCSTORE_FragmentCallback)
+ op->data_cb) (op->cls, mmsg, ntohl (fres->psycstore_flags));
+ }
+ break;
+
+ case GNUNET_MESSAGE_TYPE_PSYCSTORE_RESULT_STATE:
+ if (size < sizeof (struct StateResult))
+ {
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ "Received message of type %d with length %lu bytes. "
+ "Expected >= %lu\n",
+ type, size, sizeof (struct StateResult));
+ GNUNET_break (0);
+ reschedule_connect (h);
+ return;
+ }
+
+ sres = (const struct StateResult *) msg;
+ const char *name = (const char *) &sres[1];
+ uint16_t name_size = ntohs (sres->name_size);
+
+ if (name_size <= 2 || '\0' != name[name_size - 1])
+ {
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ "Received state result message (type %d) with invalid name.\n",
+ type);
+ GNUNET_break (0);
+ reschedule_connect (h);
+ return;
+ }
+
+ op = find_op_by_id (h, GNUNET_ntohll (sres->op_id));
+ if (NULL == op)
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "No callback registered for operation with ID %" PRIu64 ".\n",
+ type, GNUNET_ntohll (sres->op_id));
+ }
+ else
+ {
+ if (NULL != op->data_cb)
+ ((GNUNET_PSYCSTORE_StateCallback)
+ op->data_cb) (op->cls, name, (char *) &sres[1] + name_size,
+ ntohs (sres->header.size) - sizeof (*sres) - name_size);
+ }
+ break;
+
default:
GNUNET_break (0);
reschedule_connect (h);
return;
}
-}
-
-/**
- * Schedule transmission of the next message from our queue.
- *
- * @param h PSYCstore handle
- */
-static void
-transmit_next (struct GNUNET_PSYCSTORE_Handle *h);
+ GNUNET_CLIENT_receive (h->client, &message_handler, h,
+ GNUNET_TIME_UNIT_FOREVER_REL);
+}
/**
* Transmit next message to service.
*
- * @param cls the 'struct GNUNET_PSYCSTORE_Handle'.
- * @param size number of bytes available in buf
- * @param buf where to copy the message
- * @return number of bytes copied to buf
+ * @param cls The 'struct GNUNET_PSYCSTORE_Handle'.
+ * @param size Number of bytes available in buf.
+ * @param buf Where to copy the message.
+ * @return Number of bytes copied to buf.
*/
static size_t
-send_next_message (void *cls,
- size_t size,
- void *buf)
+send_next_message (void *cls, size_t size, void *buf)
{
struct GNUNET_PSYCSTORE_Handle *h = cls;
- struct GNUNET_PSYCSTORE_OperationHandle *op = h->op_head;
+ struct GNUNET_PSYCSTORE_OperationHandle *op = h->transmit_head;
size_t ret;
-
+
h->th = NULL;
if (NULL == op)
return 0;
{
reschedule_connect (h);
return 0;
- }
+ }
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Sending message of type %d to PSYCstore service\n",
- ntohs (op->msg->type));
+ "Sending message of type %d to PSYCstore service. ID: %" PRIu64 "\n",
+ ntohs (op->msg->type), op->op_id);
memcpy (buf, op->msg, ret);
- if ( (NULL == op->res_cb) &&
- (NULL == op->frag_cb) &&
- (NULL == op->state_cb))
+
+ GNUNET_CONTAINER_DLL_remove (h->transmit_head, h->transmit_tail, op);
+
+ if (NULL == op->res_cb && NULL == op->data_cb)
{
- GNUNET_CONTAINER_DLL_remove (h->op_head,
- h->op_tail,
- op);
GNUNET_free (op);
- transmit_next (h);
}
+ else
+ {
+ GNUNET_CONTAINER_DLL_insert_tail (h->op_head, h->op_tail, op);
+ }
+
+ if (NULL != h->transmit_head)
+ transmit_next (h);
+
if (GNUNET_NO == h->in_receive)
{
h->in_receive = GNUNET_YES;
- GNUNET_CLIENT_receive (h->client,
- &message_handler, h,
+ GNUNET_CLIENT_receive (h->client, &message_handler, h,
GNUNET_TIME_UNIT_FOREVER_REL);
}
return ret;
/**
* Schedule transmission of the next message from our queue.
*
- * @param h PSYCstore handle
+ * @param h PSYCstore handle.
*/
static void
transmit_next (struct GNUNET_PSYCSTORE_Handle *h)
{
- struct GNUNET_PSYCSTORE_OperationHandle *op = h->op_head;
+ if (NULL != h->th || NULL == h->client)
+ return;
- GNUNET_assert (NULL == h->th);
+ struct GNUNET_PSYCSTORE_OperationHandle *op = h->transmit_head;
if (NULL == op)
return;
- if (NULL == h->client)
- return;
+
h->th = GNUNET_CLIENT_notify_transmit_ready (h->client,
ntohs (op->msg->size),
GNUNET_TIME_UNIT_FOREVER_REL,
/**
* Try again to connect to the PSYCstore service.
*
- * @param cls the handle to the PSYCstore service
- * @param tc scheduler context
+ * @param cls Handle to the PSYCstore service.
+ * @param tc Scheduler context.
*/
static void
reconnect (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
struct GNUNET_PSYCSTORE_Handle *h = cls;
- h->reconnect_task = GNUNET_SCHEDULER_NO_TASK;
+ h->reconnect_task = NULL;
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Connecting to PSYCstore service.\n");
GNUNET_assert (NULL == h->client);
/**
* Connect to the PSYCstore service.
*
- * @param cfg the configuration to use
- * @return handle to use
+ * @param cfg The configuration to use
+ * @return Handle to use
*/
struct GNUNET_PSYCSTORE_Handle *
GNUNET_PSYCSTORE_connect (const struct GNUNET_CONFIGURATION_Handle *cfg)
{
- struct GNUNET_PSYCSTORE_Handle *h;
-
- h = GNUNET_new (struct GNUNET_PSYCSTORE_Handle);
+ struct GNUNET_PSYCSTORE_Handle *h
+ = GNUNET_new (struct GNUNET_PSYCSTORE_Handle);
h->cfg = cfg;
h->reconnect_delay = GNUNET_TIME_UNIT_ZERO;
h->reconnect_task = GNUNET_SCHEDULER_add_now (&reconnect, h);
/**
* Disconnect from PSYCstore service
*
- * @param h handle to destroy
+ * @param h Handle to destroy
*/
void
GNUNET_PSYCSTORE_disconnect (struct GNUNET_PSYCSTORE_Handle *h)
{
GNUNET_assert (NULL != h);
- GNUNET_assert (h->op_head == h->op_tail);
- if (h->reconnect_task != GNUNET_SCHEDULER_NO_TASK)
+ if (h->reconnect_task != NULL)
{
GNUNET_SCHEDULER_cancel (h->reconnect_task);
- h->reconnect_task = GNUNET_SCHEDULER_NO_TASK;
+ h->reconnect_task = NULL;
}
if (NULL != h->th)
{
{
struct GNUNET_PSYCSTORE_Handle *h = op->h;
- if ( (h->op_head != op) ||
- (NULL == h->client) )
+ if (h->transmit_head != NULL && (h->transmit_head != op || NULL == h->client))
{
/* request not active, can simply remove */
- GNUNET_CONTAINER_DLL_remove (h->op_head,
- h->op_tail,
- op);
+ GNUNET_CONTAINER_DLL_remove (h->transmit_head, h->transmit_tail, op);
GNUNET_free (op);
return;
}
/* request active but not yet with service, can still abort */
GNUNET_CLIENT_notify_transmit_ready_cancel (h->th);
h->th = NULL;
- GNUNET_CONTAINER_DLL_remove (h->op_head,
- h->op_tail,
- op);
+ GNUNET_CONTAINER_DLL_remove (h->transmit_head, h->transmit_tail, op);
GNUNET_free (op);
transmit_next (h);
return;
}
/* request active with service, simply ensure continuations are not called */
op->res_cb = NULL;
- op->frag_cb = NULL;
- op->state_cb = NULL;
+ op->data_cb = NULL;
}
+/**
+ * Store join/leave events for a PSYC channel in order to be able to answer
+ * membership test queries later.
+ *
+ * @param h
+ * Handle for the PSYCstore.
+ * @param channel_key
+ * The channel where the event happened.
+ * @param slave_key
+ * Public key of joining/leaving slave.
+ * @param did_join
+ * #GNUNET_YES on join, #GNUNET_NO on part.
+ * @param announced_at
+ * ID of the message that announced the membership change.
+ * @param effective_since
+ * Message ID this membership change is in effect since.
+ * For joins it is <= announced_at, for parts it is always 0.
+ * @param group_generation
+ * In case of a part, the last group generation the slave has access to.
+ * It has relevance when a larger message have fragments with different
+ * group generations.
+ * @param rcb
+ * Callback to call with the result of the storage operation.
+ * @param rcb_cls
+ * Closure for the callback.
+ *
+ * @return Operation handle that can be used to cancel the operation.
+ */
struct GNUNET_PSYCSTORE_OperationHandle *
-GNUNET_PSYCSTORE_membership_store (
- struct GNUNET_PSYCSTORE_Handle *h,
- const struct GNUNET_CRYPTO_EccPublicSignKey *channel_key,
- const struct GNUNET_CRYPTO_EccPublicSignKey *slave_key,
- int did_join,
- uint64_t announced_at,
- uint64_t effective_since,
- uint64_t group_generation,
- GNUNET_PSYCSTORE_ResultCallback rcb,
- void *rcb_cls)
+GNUNET_PSYCSTORE_membership_store (struct GNUNET_PSYCSTORE_Handle *h,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *slave_key,
+ int did_join,
+ uint64_t announced_at,
+ uint64_t effective_since,
+ uint64_t group_generation,
+ GNUNET_PSYCSTORE_ResultCallback rcb,
+ void *rcb_cls)
{
-
+ GNUNET_assert (NULL != h);
+ GNUNET_assert (NULL != channel_key);
+ GNUNET_assert (NULL != slave_key);
+ GNUNET_assert (GNUNET_YES == did_join || GNUNET_NO == did_join);
+ GNUNET_assert (did_join
+ ? effective_since <= announced_at
+ : effective_since == 0);
+
+ struct MembershipStoreRequest *req;
+ struct GNUNET_PSYCSTORE_OperationHandle *
+ op = GNUNET_malloc (sizeof (*op) + sizeof (*req));
+ op->h = h;
+ op->res_cb = rcb;
+ op->cls = rcb_cls;
+
+ req = (struct MembershipStoreRequest *) &op[1];
+ op->msg = (struct GNUNET_MessageHeader *) req;
+ req->header.type = htons (GNUNET_MESSAGE_TYPE_PSYCSTORE_MEMBERSHIP_STORE);
+ req->header.size = htons (sizeof (*req));
+ req->channel_key = *channel_key;
+ req->slave_key = *slave_key;
+ req->did_join = did_join;
+ req->announced_at = GNUNET_htonll (announced_at);
+ req->effective_since = GNUNET_htonll (effective_since);
+ req->group_generation = GNUNET_htonll (group_generation);
+
+ op->op_id = get_next_op_id (h);
+ req->op_id = GNUNET_htonll (op->op_id);
+
+ GNUNET_CONTAINER_DLL_insert_tail (h->transmit_head, h->transmit_tail, op);
+ transmit_next (h);
+
+ return op;
}
+/**
+ * Test if a member was admitted to the channel at the given message ID.
+ *
+ * This is useful when relaying and replaying messages to check if a particular
+ * slave has access to the message fragment with a given group generation. It
+ * is also used when handling join requests to determine whether the slave is
+ * currently admitted to the channel.
+ *
+ * @param h
+ * Handle for the PSYCstore.
+ * @param channel_key
+ * The channel we are interested in.
+ * @param slave_key
+ * Public key of slave whose membership to check.
+ * @param message_id
+ * Message ID for which to do the membership test.
+ * @param group_generation
+ * Group generation of the fragment of the message to test.
+ * It has relevance if the message consists of multiple fragments with
+ * different group generations.
+ * @param rcb
+ * Callback to call with the test result.
+ * @param rcb_cls
+ * Closure for the callback.
+ *
+ * @return Operation handle that can be used to cancel the operation.
+ */
struct GNUNET_PSYCSTORE_OperationHandle *
-GNUNET_PSYCSTORE_membership_test (
- struct GNUNET_PSYCSTORE_Handle *h,
- const struct GNUNET_CRYPTO_EccPublicSignKey *channel_key,
- const struct GNUNET_CRYPTO_EccPublicSignKey *slave_key,
- uint64_t message_id,
- uint64_t group_generation,
- GNUNET_PSYCSTORE_ResultCallback rcb,
- void *rcb_cls)
+GNUNET_PSYCSTORE_membership_test (struct GNUNET_PSYCSTORE_Handle *h,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *slave_key,
+ uint64_t message_id,
+ uint64_t group_generation,
+ GNUNET_PSYCSTORE_ResultCallback rcb,
+ void *rcb_cls)
{
+ struct MembershipTestRequest *req;
+ struct GNUNET_PSYCSTORE_OperationHandle *
+ op = GNUNET_malloc (sizeof (*op) + sizeof (*req));
+ op->h = h;
+ op->res_cb = rcb;
+ op->cls = rcb_cls;
+
+ req = (struct MembershipTestRequest *) &op[1];
+ op->msg = (struct GNUNET_MessageHeader *) req;
+ req->header.type = htons (GNUNET_MESSAGE_TYPE_PSYCSTORE_MEMBERSHIP_TEST);
+ req->header.size = htons (sizeof (*req));
+ req->channel_key = *channel_key;
+ req->slave_key = *slave_key;
+ req->message_id = GNUNET_htonll (message_id);
+ req->group_generation = GNUNET_htonll (group_generation);
+
+ op->op_id = get_next_op_id (h);
+ req->op_id = GNUNET_htonll (op->op_id);
+
+ GNUNET_CONTAINER_DLL_insert_tail (h->transmit_head, h->transmit_tail, op);
+ transmit_next (h);
+
+ return op;
+}
+
+
+/**
+ * Store a message fragment sent to a channel.
+ *
+ * @param h Handle for the PSYCstore.
+ * @param channel_key The channel the message belongs to.
+ * @param message Message to store.
+ * @param psycstore_flags Flags indicating whether the PSYC message contains
+ * state modifiers.
+ * @param rcb Callback to call with the result of the operation.
+ * @param rcb_cls Closure for the callback.
+ *
+ * @return Handle that can be used to cancel the operation.
+ */
+struct GNUNET_PSYCSTORE_OperationHandle *
+GNUNET_PSYCSTORE_fragment_store (struct GNUNET_PSYCSTORE_Handle *h,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ const struct GNUNET_MULTICAST_MessageHeader *msg,
+ enum GNUNET_PSYCSTORE_MessageFlags psycstore_flags,
+ GNUNET_PSYCSTORE_ResultCallback rcb,
+ void *rcb_cls)
+{
+ uint16_t size = ntohs (msg->header.size);
+ struct FragmentStoreRequest *req;
+ struct GNUNET_PSYCSTORE_OperationHandle *
+ op = GNUNET_malloc (sizeof (*op) + sizeof (*req) + size);
+ op->h = h;
+ op->res_cb = rcb;
+ op->cls = rcb_cls;
+
+ req = (struct FragmentStoreRequest *) &op[1];
+ op->msg = (struct GNUNET_MessageHeader *) req;
+ req->header.type = htons (GNUNET_MESSAGE_TYPE_PSYCSTORE_FRAGMENT_STORE);
+ req->header.size = htons (sizeof (*req) + size);
+ req->channel_key = *channel_key;
+ req->psycstore_flags = htonl (psycstore_flags);
+ memcpy (&req[1], msg, size);
+
+ op->op_id = get_next_op_id (h);
+ req->op_id = GNUNET_htonll (op->op_id);
+
+ GNUNET_CONTAINER_DLL_insert_tail (h->transmit_head, h->transmit_tail, op);
+ transmit_next (h);
+
+ return op;
+}
+
+
+/**
+ * Retrieve message fragments by fragment ID range.
+ *
+ * @param h
+ * Handle for the PSYCstore.
+ * @param channel_key
+ * The channel we are interested in.
+ * @param slave_key
+ * The slave requesting the fragment. If not NULL, a membership test is
+ * performed first and the fragment is only returned if the slave has
+ * access to it.
+ * @param first_fragment_id
+ * First fragment ID to retrieve.
+ * Use 0 to get the latest message fragment.
+ * @param last_fragment_id
+ * Last consecutive fragment ID to retrieve.
+ * Use 0 to get the latest message fragment.
+ * @param fragment_limit
+ * Maximum number of fragments to retrieve.
+ * @param fragment_cb
+ * Callback to call with the retrieved fragments.
+ * @param rcb
+ * Callback to call with the result of the operation.
+ * @param cls
+ * Closure for the callbacks.
+ *
+ * @return Handle that can be used to cancel the operation.
+ */
+struct GNUNET_PSYCSTORE_OperationHandle *
+GNUNET_PSYCSTORE_fragment_get (struct GNUNET_PSYCSTORE_Handle *h,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *slave_key,
+ uint64_t first_fragment_id,
+ uint64_t last_fragment_id,
+ GNUNET_PSYCSTORE_FragmentCallback fragment_cb,
+ GNUNET_PSYCSTORE_ResultCallback rcb,
+ void *cls)
+{
+ struct FragmentGetRequest *req;
+ struct GNUNET_PSYCSTORE_OperationHandle *
+ op = GNUNET_malloc (sizeof (*op) + sizeof (*req));
+ op->h = h;
+ op->data_cb = (DataCallback) fragment_cb;
+ op->res_cb = rcb;
+ op->cls = cls;
+
+ req = (struct FragmentGetRequest *) &op[1];
+ op->msg = (struct GNUNET_MessageHeader *) req;
+ req->header.type = htons (GNUNET_MESSAGE_TYPE_PSYCSTORE_FRAGMENT_GET);
+ req->header.size = htons (sizeof (*req));
+ req->channel_key = *channel_key;
+ req->first_fragment_id = GNUNET_htonll (first_fragment_id);
+ req->last_fragment_id = GNUNET_htonll (last_fragment_id);
+ if (NULL != slave_key)
+ {
+ req->slave_key = *slave_key;
+ req->do_membership_test = GNUNET_YES;
+ }
+
+ op->op_id = get_next_op_id (h);
+ req->op_id = GNUNET_htonll (op->op_id);
+
+ GNUNET_CONTAINER_DLL_insert_tail (h->transmit_head, h->transmit_tail, op);
+ transmit_next (h);
+
+ return op;
+}
+
+
+/**
+ * Retrieve latest message fragments.
+ *
+ * @param h
+ * Handle for the PSYCstore.
+ * @param channel_key
+ * The channel we are interested in.
+ * @param slave_key
+ * The slave requesting the fragment. If not NULL, a membership test is
+ * performed first and the fragment is only returned if the slave has
+ * access to it.
+ * @param first_fragment_id
+ * First fragment ID to retrieve.
+ * Use 0 to get the latest message fragment.
+ * @param last_fragment_id
+ * Last consecutive fragment ID to retrieve.
+ * Use 0 to get the latest message fragment.
+ * @param fragment_limit
+ * Maximum number of fragments to retrieve.
+ * @param fragment_cb
+ * Callback to call with the retrieved fragments.
+ * @param rcb
+ * Callback to call with the result of the operation.
+ * @param cls
+ * Closure for the callbacks.
+ *
+ * @return Handle that can be used to cancel the operation.
+ */
+struct GNUNET_PSYCSTORE_OperationHandle *
+GNUNET_PSYCSTORE_fragment_get_latest (struct GNUNET_PSYCSTORE_Handle *h,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *slave_key,
+ uint64_t fragment_limit,
+ GNUNET_PSYCSTORE_FragmentCallback fragment_cb,
+ GNUNET_PSYCSTORE_ResultCallback rcb,
+ void *cls)
+{
+ struct FragmentGetRequest *req;
+ struct GNUNET_PSYCSTORE_OperationHandle *
+ op = GNUNET_malloc (sizeof (*op) + sizeof (*req));
+ op->h = h;
+ op->data_cb = (DataCallback) fragment_cb;
+ op->res_cb = rcb;
+ op->cls = cls;
+
+ req = (struct FragmentGetRequest *) &op[1];
+ op->msg = (struct GNUNET_MessageHeader *) req;
+ req->header.type = htons (GNUNET_MESSAGE_TYPE_PSYCSTORE_FRAGMENT_GET);
+ req->header.size = htons (sizeof (*req));
+ req->channel_key = *channel_key;
+ req->fragment_limit = GNUNET_ntohll (fragment_limit);
+ if (NULL != slave_key)
+ {
+ req->slave_key = *slave_key;
+ req->do_membership_test = GNUNET_YES;
+ }
+
+ op->op_id = get_next_op_id (h);
+ req->op_id = GNUNET_htonll (op->op_id);
+
+ GNUNET_CONTAINER_DLL_insert_tail (h->transmit_head, h->transmit_tail, op);
+ transmit_next (h);
+
+ return op;
+}
+
+
+/**
+ * Retrieve all fragments of messages in a message ID range.
+ *
+ * @param h
+ * Handle for the PSYCstore.
+ * @param channel_key
+ * The channel we are interested in.
+ * @param slave_key
+ * The slave requesting the message.
+ * If not NULL, a membership test is performed first
+ * and the message is only returned if the slave has access to it.
+ * @param first_message_id
+ * First message ID to retrieve.
+ * @param last_message_id
+ * Last consecutive message ID to retrieve.
+ * @param method_prefix
+ * Retrieve only messages with a matching method prefix.
+ * @todo Implement method_prefix query.
+ * @param fragment_cb
+ * Callback to call with the retrieved fragments.
+ * @param result_cb
+ * Callback to call with the result of the operation.
+ * @param cls
+ * Closure for the callbacks.
+ *
+ * @return Handle that can be used to cancel the operation.
+ */
+struct GNUNET_PSYCSTORE_OperationHandle *
+GNUNET_PSYCSTORE_message_get (struct GNUNET_PSYCSTORE_Handle *h,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *slave_key,
+ uint64_t first_message_id,
+ uint64_t last_message_id,
+ const char *method_prefix,
+ GNUNET_PSYCSTORE_FragmentCallback fragment_cb,
+ GNUNET_PSYCSTORE_ResultCallback rcb,
+ void *cls)
+{
+ struct MessageGetRequest *req;
+ if (NULL == method_prefix)
+ method_prefix = "";
+ uint16_t method_size = strnlen (method_prefix,
+ GNUNET_SERVER_MAX_MESSAGE_SIZE
+ - sizeof (*req)) + 1;
+
+ struct GNUNET_PSYCSTORE_OperationHandle *
+ op = GNUNET_malloc (sizeof (*op) + sizeof (*req));
+ op->h = h;
+ op->data_cb = (DataCallback) fragment_cb;
+ op->res_cb = rcb;
+ op->cls = cls;
+
+ req = (struct MessageGetRequest *) &op[1];
+ op->msg = (struct GNUNET_MessageHeader *) req;
+ req->header.type = htons (GNUNET_MESSAGE_TYPE_PSYCSTORE_MESSAGE_GET);
+ req->header.size = htons (sizeof (*req) + method_size);
+ req->channel_key = *channel_key;
+ req->first_message_id = GNUNET_htonll (first_message_id);
+ req->last_message_id = GNUNET_htonll (last_message_id);
+ if (NULL != slave_key)
+ {
+ req->slave_key = *slave_key;
+ req->do_membership_test = GNUNET_YES;
+ }
+ memcpy (&req[1], method_prefix, method_size);
+ ((char *) &req[1])[method_size - 1] = '\0';
+
+ op->op_id = get_next_op_id (h);
+ req->op_id = GNUNET_htonll (op->op_id);
+
+ GNUNET_CONTAINER_DLL_insert_tail (h->transmit_head, h->transmit_tail, op);
+ transmit_next (h);
+
+ return op;
+}
+
+
+/**
+ * Retrieve all fragments of the latest messages.
+ *
+ * @param h
+ * Handle for the PSYCstore.
+ * @param channel_key
+ * The channel we are interested in.
+ * @param slave_key
+ * The slave requesting the message.
+ * If not NULL, a membership test is performed first
+ * and the message is only returned if the slave has access to it.
+ * @param message_limit
+ * Maximum number of messages to retrieve.
+ * @param method_prefix
+ * Retrieve only messages with a matching method prefix.
+ * @todo Implement method_prefix query.
+ * @param fragment_cb
+ * Callback to call with the retrieved fragments.
+ * @param result_cb
+ * Callback to call with the result of the operation.
+ * @param cls
+ * Closure for the callbacks.
+ *
+ * @return Handle that can be used to cancel the operation.
+ */
+struct GNUNET_PSYCSTORE_OperationHandle *
+GNUNET_PSYCSTORE_message_get_latest (struct GNUNET_PSYCSTORE_Handle *h,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *slave_key,
+ uint64_t message_limit,
+ const char *method_prefix,
+ GNUNET_PSYCSTORE_FragmentCallback fragment_cb,
+ GNUNET_PSYCSTORE_ResultCallback rcb,
+ void *cls)
+{
+ struct MessageGetRequest *req;
+
+ if (NULL == method_prefix)
+ method_prefix = "";
+ uint16_t method_size = strnlen (method_prefix,
+ GNUNET_SERVER_MAX_MESSAGE_SIZE
+ - sizeof (*req)) + 1;
+ GNUNET_assert ('\0' == method_prefix[method_size - 1]);
+
+ struct GNUNET_PSYCSTORE_OperationHandle *
+ op = GNUNET_malloc (sizeof (*op) + sizeof (*req) + method_size);
+ op->h = h;
+ op->data_cb = (DataCallback) fragment_cb;
+ op->res_cb = rcb;
+ op->cls = cls;
+
+ req = (struct MessageGetRequest *) &op[1];
+ op->msg = (struct GNUNET_MessageHeader *) req;
+ req->header.type = htons (GNUNET_MESSAGE_TYPE_PSYCSTORE_MESSAGE_GET);
+ req->header.size = htons (sizeof (*req) + method_size);
+ req->channel_key = *channel_key;
+ req->message_limit = GNUNET_ntohll (message_limit);
+ if (NULL != slave_key)
+ {
+ req->slave_key = *slave_key;
+ req->do_membership_test = GNUNET_YES;
+ }
+
+ op->op_id = get_next_op_id (h);
+ req->op_id = GNUNET_htonll (op->op_id);
+ memcpy (&req[1], method_prefix, method_size);
+
+ GNUNET_CONTAINER_DLL_insert_tail (h->transmit_head, h->transmit_tail, op);
+ transmit_next (h);
+
+ return op;
+}
+
+
+/**
+ * Retrieve a fragment of message specified by its message ID and fragment
+ * offset.
+ *
+ * @param h
+ * Handle for the PSYCstore.
+ * @param channel_key
+ * The channel we are interested in.
+ * @param slave_key
+ * The slave requesting the message fragment. If not NULL, a membership
+ * test is performed first and the message fragment is only returned
+ * if the slave has access to it.
+ * @param message_id
+ * Message ID to retrieve. Use 0 to get the latest message.
+ * @param fragment_offset
+ * Offset of the fragment to retrieve.
+ * @param fragment_cb
+ * Callback to call with the retrieved fragments.
+ * @param result_cb
+ * Callback to call with the result of the operation.
+ * @param cls
+ * Closure for the callbacks.
+ *
+ * @return Handle that can be used to cancel the operation.
+ */
+struct GNUNET_PSYCSTORE_OperationHandle *
+GNUNET_PSYCSTORE_message_get_fragment (struct GNUNET_PSYCSTORE_Handle *h,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *slave_key,
+ uint64_t message_id,
+ uint64_t fragment_offset,
+ GNUNET_PSYCSTORE_FragmentCallback fragment_cb,
+ GNUNET_PSYCSTORE_ResultCallback rcb,
+ void *cls)
+{
+ struct MessageGetFragmentRequest *req;
+ struct GNUNET_PSYCSTORE_OperationHandle *
+ op = GNUNET_malloc (sizeof (*op) + sizeof (*req));
+ op->h = h;
+ op->data_cb = (DataCallback) fragment_cb;
+ op->res_cb = rcb;
+ op->cls = cls;
+
+ req = (struct MessageGetFragmentRequest *) &op[1];
+ op->msg = (struct GNUNET_MessageHeader *) req;
+ req->header.type = htons (GNUNET_MESSAGE_TYPE_PSYCSTORE_MESSAGE_GET_FRAGMENT);
+ req->header.size = htons (sizeof (*req));
+ req->channel_key = *channel_key;
+ req->message_id = GNUNET_htonll (message_id);
+ req->fragment_offset = GNUNET_htonll (fragment_offset);
+ if (NULL != slave_key)
+ {
+ req->slave_key = *slave_key;
+ req->do_membership_test = GNUNET_YES;
+ }
+
+ op->op_id = get_next_op_id (h);
+ req->op_id = GNUNET_htonll (op->op_id);
+
+ GNUNET_CONTAINER_DLL_insert_tail (h->transmit_head, h->transmit_tail, op);
+ transmit_next (h);
+
+ return op;
+}
+
+
+/**
+ * Retrieve latest values of counters for a channel master.
+ *
+ * The current value of counters are needed when a channel master is restarted,
+ * so that it can continue incrementing the counters from their last value.
+ *
+ * @param h
+ * Handle for the PSYCstore.
+ * @param channel_key
+ * Public key that identifies the channel.
+ * @param ccb
+ * Callback to call with the result.
+ * @param ccb_cls
+ * Closure for the @a ccb callback.
+ *
+ * @return Handle that can be used to cancel the operation.
+ */
+struct GNUNET_PSYCSTORE_OperationHandle *
+GNUNET_PSYCSTORE_counters_get (struct GNUNET_PSYCSTORE_Handle *h,
+ struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ GNUNET_PSYCSTORE_CountersCallback ccb,
+ void *ccb_cls)
+{
+ struct OperationRequest *req;
+ struct GNUNET_PSYCSTORE_OperationHandle *
+ op = GNUNET_malloc (sizeof (*op) + sizeof (*req));
+ op->h = h;
+ op->data_cb = ccb;
+ op->cls = ccb_cls;
+
+ req = (struct OperationRequest *) &op[1];
+ op->msg = (struct GNUNET_MessageHeader *) req;
+ req->header.type = htons (GNUNET_MESSAGE_TYPE_PSYCSTORE_COUNTERS_GET);
+ req->header.size = htons (sizeof (*req));
+ req->channel_key = *channel_key;
+
+ op->op_id = get_next_op_id (h);
+ req->op_id = GNUNET_htonll (op->op_id);
+
+ GNUNET_CONTAINER_DLL_insert_tail (h->transmit_head, h->transmit_tail, op);
+ transmit_next (h);
+
+ return op;
+}
+
+
+/**
+ * Apply modifiers of a message to the current channel state.
+ *
+ * An error is returned if there are missing messages containing state
+ * operations before the current one.
+ *
+ * @param h
+ * Handle for the PSYCstore.
+ * @param channel_key
+ * The channel we are interested in.
+ * @param message_id
+ * ID of the message that contains the @a modifiers.
+ * @param state_delta
+ * Value of the _state_delta PSYC header variable of the message.
+ * @param rcb
+ * Callback to call with the result of the operation.
+ * @param rcb_cls
+ * Closure for the @a rcb callback.
+ *
+ * @return Handle that can be used to cancel the operation.
+ */
+struct GNUNET_PSYCSTORE_OperationHandle *
+GNUNET_PSYCSTORE_state_modify (struct GNUNET_PSYCSTORE_Handle *h,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ uint64_t message_id,
+ uint64_t state_delta,
+ GNUNET_PSYCSTORE_ResultCallback rcb,
+ void *rcb_cls)
+{
+ struct GNUNET_PSYCSTORE_OperationHandle *op = NULL;
+ struct StateModifyRequest *req;
+
+ op = GNUNET_malloc (sizeof (*op) + sizeof (*req));
+ op->h = h;
+ op->res_cb = rcb;
+ op->cls = rcb_cls;
+
+ req = (struct StateModifyRequest *) &op[1];
+ op->msg = (struct GNUNET_MessageHeader *) req;
+ req->header.type = htons (GNUNET_MESSAGE_TYPE_PSYCSTORE_STATE_MODIFY);
+ req->header.size = htons (sizeof (*req));
+ req->channel_key = *channel_key;
+ req->message_id = GNUNET_htonll (message_id);
+ req->state_delta = GNUNET_htonll (state_delta);
+
+ op->op_id = get_next_op_id (h);
+ req->op_id = GNUNET_htonll (op->op_id);
+
+ GNUNET_CONTAINER_DLL_insert_tail (h->transmit_head, h->transmit_tail, op);
+ transmit_next (h);
+
+ return op;
+ /* FIXME: only the last operation is returned,
+ * operation_cancel() should be able to cancel all of them.
+ */
+}
+
+
+/**
+ * Store synchronized state.
+ *
+ * @param h
+ * Handle for the PSYCstore.
+ * @param channel_key
+ * The channel we are interested in.
+ * @param max_state_message_id
+ * ID of the last stateful message before @a state_hash_message_id.
+ * @param state_hash_message_id
+ * ID of the message that contains the state_hash PSYC header variable.
+ * @param modifier_count
+ * Number of elements in the @a modifiers array.
+ * @param modifiers
+ * Full state to store.
+ * @param rcb
+ * Callback to call with the result of the operation.
+ * @param rcb_cls
+ * Closure for the callback.
+ *
+ * @return Handle that can be used to cancel the operation.
+ */
+struct GNUNET_PSYCSTORE_OperationHandle *
+GNUNET_PSYCSTORE_state_sync (struct GNUNET_PSYCSTORE_Handle *h,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ uint64_t max_state_message_id,
+ uint64_t state_hash_message_id,
+ size_t modifier_count,
+ const struct GNUNET_ENV_Modifier *modifiers,
+ GNUNET_PSYCSTORE_ResultCallback rcb,
+ void *rcb_cls)
+{
+ struct GNUNET_PSYCSTORE_OperationHandle *op = NULL;
+ size_t i;
+
+ for (i = 0; i < modifier_count; i++) {
+ struct StateSyncRequest *req;
+ uint16_t name_size = strlen (modifiers[i].name) + 1;
+
+ op = GNUNET_malloc (sizeof (*op) + sizeof (*req) + name_size +
+ modifiers[i].value_size);
+ op->h = h;
+ op->res_cb = rcb;
+ op->cls = rcb_cls;
+
+ req = (struct StateSyncRequest *) &op[1];
+ op->msg = (struct GNUNET_MessageHeader *) req;
+ req->header.type = htons (GNUNET_MESSAGE_TYPE_PSYCSTORE_STATE_SYNC);
+ req->header.size = htons (sizeof (*req) + name_size
+ + modifiers[i].value_size);
+ req->channel_key = *channel_key;
+ req->max_state_message_id = GNUNET_htonll (max_state_message_id);
+ req->state_hash_message_id = GNUNET_htonll (state_hash_message_id);
+ req->name_size = htons (name_size);
+ req->flags
+ = (0 == i)
+ ? STATE_OP_FIRST
+ : (modifier_count - 1 == i)
+ ? STATE_OP_LAST
+ : 0;
+
+ memcpy (&req[1], modifiers[i].name, name_size);
+ memcpy ((char *) &req[1] + name_size, modifiers[i].value, modifiers[i].value_size);
+
+ op->op_id = get_next_op_id (h);
+ req->op_id = GNUNET_htonll (op->op_id);
+
+ GNUNET_CONTAINER_DLL_insert_tail (h->transmit_head, h->transmit_tail, op);
+ transmit_next (h);
+ }
+ return op;
+}
+
+
+/**
+ * Reset the state of a channel.
+ *
+ * Delete all state variables stored for the given channel.
+ *
+ * @param h
+ * Handle for the PSYCstore.
+ * @param channel_key
+ * The channel we are interested in.
+ * @param rcb
+ * Callback to call with the result of the operation.
+ * @param rcb_cls
+ * Closure for the callback.
+ *
+ * @return Handle that can be used to cancel the operation.
+ */
+struct GNUNET_PSYCSTORE_OperationHandle *
+GNUNET_PSYCSTORE_state_reset (struct GNUNET_PSYCSTORE_Handle *h,
+ const struct GNUNET_CRYPTO_EddsaPublicKey
+ *channel_key,
+ GNUNET_PSYCSTORE_ResultCallback rcb,
+ void *rcb_cls)
+{
+ struct OperationRequest *req;
+ struct GNUNET_PSYCSTORE_OperationHandle *
+ op = GNUNET_malloc (sizeof (*op) + sizeof (*req));
+ op->h = h;
+ op->res_cb = rcb;
+ op->cls = rcb_cls;
+
+ req = (struct OperationRequest *) &op[1];
+ op->msg = (struct GNUNET_MessageHeader *) req;
+ req->header.type = htons (GNUNET_MESSAGE_TYPE_PSYCSTORE_STATE_RESET);
+ req->header.size = htons (sizeof (*req));
+ req->channel_key = *channel_key;
+
+ op->op_id = get_next_op_id (h);
+ req->op_id = GNUNET_htonll (op->op_id);
+
+ GNUNET_CONTAINER_DLL_insert_tail (h->transmit_head, h->transmit_tail, op);
+ transmit_next (h);
+
+ return op;
+}
+
+
+
+/**
+ * Update signed values of state variables in the state store.
+ *
+ * @param h
+ * Handle for the PSYCstore.
+ * @param channel_key
+ * The channel we are interested in.
+ * @param message_id
+ * Message ID that contained the state @a hash.
+ * @param hash
+ * Hash of the serialized full state.
+ * @param rcb
+ * Callback to call with the result of the operation.
+ * @param rcb_cls
+ * Closure for the callback.
+ */
+struct GNUNET_PSYCSTORE_OperationHandle *
+GNUNET_PSYCSTORE_state_hash_update (struct GNUNET_PSYCSTORE_Handle *h,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ uint64_t message_id,
+ const struct GNUNET_HashCode *hash,
+ GNUNET_PSYCSTORE_ResultCallback rcb,
+ void *rcb_cls)
+{
+ struct StateHashUpdateRequest *req;
+ struct GNUNET_PSYCSTORE_OperationHandle *
+ op = GNUNET_malloc (sizeof (*op) + sizeof (*req));
+ op->h = h;
+ op->res_cb = rcb;
+ op->cls = rcb_cls;
+
+ req = (struct StateHashUpdateRequest *) &op[1];
+ op->msg = (struct GNUNET_MessageHeader *) req;
+ req->header.type = htons (GNUNET_MESSAGE_TYPE_PSYCSTORE_STATE_RESET);
+ req->header.size = htons (sizeof (*req));
+ req->channel_key = *channel_key;
+ req->hash = *hash;
+
+ op->op_id = get_next_op_id (h);
+ req->op_id = GNUNET_htonll (op->op_id);
+
+ GNUNET_CONTAINER_DLL_insert_tail (h->transmit_head, h->transmit_tail, op);
+ transmit_next (h);
+
+ return op;
+}
+
+
+/**
+ * Retrieve the best matching state variable.
+ *
+ * @param h
+ * Handle for the PSYCstore.
+ * @param channel_key
+ * The channel we are interested in.
+ * @param name
+ * Name of variable to match, the returned variable might be less specific.
+ * @param scb
+ * Callback to return the matching state variable.
+ * @param rcb
+ * Callback to call with the result of the operation.
+ * @param cls
+ * Closure for the callbacks.
+ *
+ * @return Handle that can be used to cancel the operation.
+ */
+struct GNUNET_PSYCSTORE_OperationHandle *
+GNUNET_PSYCSTORE_state_get (struct GNUNET_PSYCSTORE_Handle *h,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ const char *name,
+ GNUNET_PSYCSTORE_StateCallback scb,
+ GNUNET_PSYCSTORE_ResultCallback rcb,
+ void *cls)
+{
+ size_t name_size = strlen (name) + 1;
+ struct OperationRequest *req;
+ struct GNUNET_PSYCSTORE_OperationHandle *
+ op = GNUNET_malloc (sizeof (*op) + sizeof (*req) + name_size);
+ op->h = h;
+ op->data_cb = (DataCallback) scb;
+ op->res_cb = rcb;
+ op->cls = cls;
+
+ req = (struct OperationRequest *) &op[1];
+ op->msg = (struct GNUNET_MessageHeader *) req;
+ req->header.type = htons (GNUNET_MESSAGE_TYPE_PSYCSTORE_STATE_GET);
+ req->header.size = htons (sizeof (*req) + name_size);
+ req->channel_key = *channel_key;
+ memcpy (&req[1], name, name_size);
+
+ op->op_id = get_next_op_id (h);
+ req->op_id = GNUNET_htonll (op->op_id);
+
+ GNUNET_CONTAINER_DLL_insert_tail (h->transmit_head, h->transmit_tail, op);
+ transmit_next (h);
+
+ return op;
+}
+
+
+
+/**
+ * Retrieve all state variables for a channel with the given prefix.
+ *
+ * @param h
+ * Handle for the PSYCstore.
+ * @param channel_key
+ * The channel we are interested in.
+ * @param name_prefix
+ * Prefix of state variable names to match.
+ * @param scb
+ * Callback to return matching state variables.
+ * @param rcb
+ * Callback to call with the result of the operation.
+ * @param cls
+ * Closure for the callbacks.
+ *
+ * @return Handle that can be used to cancel the operation.
+ */
+struct GNUNET_PSYCSTORE_OperationHandle *
+GNUNET_PSYCSTORE_state_get_prefix (struct GNUNET_PSYCSTORE_Handle *h,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
+ const char *name_prefix,
+ GNUNET_PSYCSTORE_StateCallback scb,
+ GNUNET_PSYCSTORE_ResultCallback rcb,
+ void *cls)
+{
+ size_t name_size = strlen (name_prefix) + 1;
+ struct OperationRequest *req;
+ struct GNUNET_PSYCSTORE_OperationHandle *
+ op = GNUNET_malloc (sizeof (*op) + sizeof (*req) + name_size);
+ op->h = h;
+ op->data_cb = (DataCallback) scb;
+ op->res_cb = rcb;
+ op->cls = cls;
+
+ req = (struct OperationRequest *) &op[1];
+ op->msg = (struct GNUNET_MessageHeader *) req;
+ req->header.type = htons (GNUNET_MESSAGE_TYPE_PSYCSTORE_STATE_GET_PREFIX);
+ req->header.size = htons (sizeof (*req) + name_size);
+ req->channel_key = *channel_key;
+ memcpy (&req[1], name_prefix, name_size);
+
+ op->op_id = get_next_op_id (h);
+ req->op_id = GNUNET_htonll (op->op_id);
+
+ GNUNET_CONTAINER_DLL_insert_tail (h->transmit_head, h->transmit_tail, op);
+ transmit_next (h);
+ return op;
}
/* end of psycstore_api.c */
projects / oweals / gnunet.git / blobdiff