/*
* This file is part of GNUnet
- * (C) 2013 Christian Grothoff (and other contributing authors)
+ * Copyright (C) 2013 GNUnet e.V.
*
* GNUnet is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published
*
* You should have received a copy of the GNU General Public License
* along with GNUnet; see the file COPYING. If not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
*/
/**
* @author Gabor X Toth
*/
+#include <inttypes.h>
+
#include "platform.h"
#include "gnunet_util_lib.h"
-#include "gnunet_env_lib.h"
+#include "gnunet_multicast_service.h"
#include "gnunet_psyc_service.h"
+#include "gnunet_psyc_util_lib.h"
#include "psyc.h"
#define LOG(kind,...) GNUNET_log_from (kind, "psyc-api",__VA_ARGS__)
-struct OperationHandle
-{
- struct OperationHandle *prev;
- struct OperationHandle *next;
- const struct GNUNET_MessageHeader *msg;
-};
-
/**
* Handle to access PSYC channel operations for both the master and slaves.
*/
const struct GNUNET_CONFIGURATION_Handle *cfg;
/**
- * Socket (if available).
+ * Client connection to the service.
*/
- struct GNUNET_CLIENT_Connection *client;
+ struct GNUNET_MQ_Handle *mq;
/**
- * Currently pending transmission request, or NULL for none.
+ * Message to send on connect.
*/
- struct GNUNET_CLIENT_TransmitHandle *th;
+ struct GNUNET_MQ_Envelope *connect_env;
/**
- * Head of operations to transmit.
+ * Time to wait until we try to reconnect on failure.
*/
- struct OperationHandle *transmit_head;
+ struct GNUNET_TIME_Relative reconnect_delay;
/**
- * Tail of operations to transmit.
+ * Task for reconnecting when the listener fails.
*/
- struct OperationHandle *transmit_tail;
+ struct GNUNET_SCHEDULER_Task *reconnect_task;
/**
- * Message to send on reconnect.
+ * Async operations.
*/
- struct GNUNET_MessageHeader *reconnect_msg;
+ struct GNUNET_OP_Handle *op;
/**
- * Task doing exponential back-off trying to reconnect.
+ * Transmission handle;
*/
- GNUNET_SCHEDULER_TaskIdentifier reconnect_task;
+ struct GNUNET_PSYC_TransmitHandle *tmit;
/**
- * Time for next connect retry.
+ * Receipt handle;
*/
- struct GNUNET_TIME_Relative reconnect_delay;
+ struct GNUNET_PSYC_ReceiveHandle *recv;
- GNUNET_PSYC_Method method_cb;
-
- GNUNET_PSYC_JoinCallback join_cb;
-
- void *cb_cls;
+ /**
+ * Function called after disconnected from the service.
+ */
+ GNUNET_ContinuationCallback disconnect_cb;
/**
- * Are we polling for incoming messages right now?
+ * Closure for @a disconnect_cb.
*/
- int in_receive;
+ void *disconnect_cls;
/**
- * Are we currently transmitting a message?
+ * Are we polling for incoming messages right now?
*/
- int in_transmit;
+ uint8_t in_receive;
/**
* Is this a master or slave channel?
*/
- int is_master;
+ uint8_t is_master;
/**
- * Buffer space available for transmitting the next data fragment.
+ * Is this channel in the process of disconnecting from the service?
+ * #GNUNET_YES or #GNUNET_NO
*/
- uint16_t tmit_buf_avail;
-};
-
-
-/**
- * Handle for a pending PSYC transmission operation.
- */
-struct GNUNET_PSYC_MasterTransmitHandle
-{
- struct GNUNET_PSYC_Master *master;
- GNUNET_PSYC_MasterTransmitNotify notify;
- void *notify_cls;
- enum GNUNET_PSYC_DataStatus status;
+ uint8_t is_disconnecting;
};
*/
struct GNUNET_PSYC_Master
{
- struct GNUNET_PSYC_Channel ch;
-
- struct GNUNET_PSYC_MasterTransmitHandle *tmit;
+ struct GNUNET_PSYC_Channel chn;
GNUNET_PSYC_MasterStartCallback start_cb;
- uint64_t max_message_id;
+ /**
+ * Join request callback.
+ */
+ GNUNET_PSYC_JoinRequestCallback join_req_cb;
+
+ /**
+ * Closure for the callbacks.
+ */
+ void *cb_cls;
};
*/
struct GNUNET_PSYC_Slave
{
- struct GNUNET_PSYC_Channel ch;
+ struct GNUNET_PSYC_Channel chn;
+
+ GNUNET_PSYC_SlaveConnectCallback connect_cb;
+
+ GNUNET_PSYC_JoinDecisionCallback join_dcsn_cb;
+
+ /**
+ * Closure for the callbacks.
+ */
+ void *cb_cls;
};
/**
* Handle that identifies a join request.
*
- * Used to match calls to #GNUNET_PSYC_JoinCallback to the
+ * Used to match calls to #GNUNET_PSYC_JoinRequestCallback to the
* corresponding calls to GNUNET_PSYC_join_decision().
*/
struct GNUNET_PSYC_JoinHandle
{
-
+ struct GNUNET_PSYC_Master *mst;
+ struct GNUNET_CRYPTO_EcdsaPublicKey slave_pub_key;
};
};
-/**
- * Handle to a story telling operation.
- */
-struct GNUNET_PSYC_Story
+struct GNUNET_PSYC_HistoryRequest
{
+ /**
+ * Channel.
+ */
+ struct GNUNET_PSYC_Channel *chn;
+
+ /**
+ * Operation ID.
+ */
+ uint64_t op_id;
+
+ /**
+ * Message handler.
+ */
+ struct GNUNET_PSYC_ReceiveHandle *recv;
+
+ /**
+ * Function to call when the operation finished.
+ */
+ GNUNET_ResultCallback result_cb;
+ /**
+ * Closure for @a result_cb.
+ */
+ void *cls;
};
-/**
- * Handle for a state query operation.
- */
-struct GNUNET_PSYC_StateQuery
+struct GNUNET_PSYC_StateRequest
{
+ /**
+ * Channel.
+ */
+ struct GNUNET_PSYC_Channel *chn;
+
+ /**
+ * Operation ID.
+ */
+ uint64_t op_id;
+ /**
+ * State variable result callback.
+ */
+ GNUNET_PSYC_StateVarCallback var_cb;
+
+ /**
+ * Function to call when the operation finished.
+ */
+ GNUNET_ResultCallback result_cb;
+
+ /**
+ * Closure for @a result_cb.
+ */
+ void *cls;
};
-/**
- * Try again to connect to the PSYC service.
- *
- * @param cls Handle to the PSYC service.
- * @param tc Scheduler context
- */
-static void
-reconnect (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
+static int
+check_channel_result (void *cls,
+ const struct GNUNET_OperationResultMessage *res)
+{
+ return GNUNET_OK;
+}
-/**
- * Reschedule a connect attempt to the service.
- *
- * @param c channel to reconnect
- */
static void
-reschedule_connect (struct GNUNET_PSYC_Channel *c)
+handle_channel_result (void *cls,
+ const struct GNUNET_OperationResultMessage *res)
{
- GNUNET_assert (c->reconnect_task == GNUNET_SCHEDULER_NO_TASK);
+ struct GNUNET_PSYC_Channel *chn = cls;
- if (NULL != c->th)
- {
- GNUNET_CLIENT_notify_transmit_ready_cancel (c->th);
- c->th = NULL;
- }
- if (NULL != c->client)
- {
- GNUNET_CLIENT_disconnect (c->client);
- c->client = NULL;
+ uint16_t size = ntohs (res->header.size);
+ if (size < sizeof (*res))
+ { /* Error, message too small. */
+ GNUNET_break (0);
+ return;
}
- c->in_receive = GNUNET_NO;
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Scheduling task to reconnect to PSYC service in %s.\n",
- GNUNET_STRINGS_relative_time_to_string (c->reconnect_delay, GNUNET_YES));
- c->reconnect_task =
- GNUNET_SCHEDULER_add_delayed (c->reconnect_delay, &reconnect, c);
- c->reconnect_delay = GNUNET_TIME_STD_BACKOFF (c->reconnect_delay);
+
+ uint16_t data_size = size - sizeof (*res);
+ const char *data = (0 < data_size) ? (void *) &res[1] : NULL;
+ GNUNET_OP_result (chn->op, GNUNET_ntohll (res->op_id),
+ GNUNET_ntohll (res->result_code),
+ data, data_size, NULL);
}
-/**
- * Schedule transmission of the next message from our queue.
- *
- * @param ch PSYC channel handle
- */
static void
-transmit_next (struct GNUNET_PSYC_Channel *ch);
+op_recv_history_result (void *cls, int64_t result,
+ const void *data, uint16_t data_size)
+{
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Received history replay result: %" PRId64 ".\n", result);
+
+ struct GNUNET_PSYC_HistoryRequest *hist = cls;
+
+ if (NULL != hist->result_cb)
+ hist->result_cb (hist->cls, result, data, data_size);
+
+ GNUNET_PSYC_receive_destroy (hist->recv);
+ GNUNET_free (hist);
+}
static void
-master_transmit_data (struct GNUNET_PSYC_Master *mst)
+op_recv_state_result (void *cls, int64_t result,
+ const void *data, uint16_t data_size)
{
- struct GNUNET_PSYC_Channel *ch = &mst->ch;
- size_t data_size = ch->tmit_buf_avail;
- struct GNUNET_PSYC_MessageData *pdata;
- struct OperationHandle *op
- = GNUNET_malloc (sizeof (*op) + sizeof (*pdata) + data_size);
- pdata = (struct GNUNET_PSYC_MessageData *) &op[1];
- op->msg = (struct GNUNET_MessageHeader *) pdata;
- pdata->header.type = htons (GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_DATA);
-
- switch (mst->tmit->notify (mst->tmit->notify_cls, &data_size, &pdata[1]))
- {
- case GNUNET_NO:
- mst->tmit->status = GNUNET_PSYC_DATA_CONT;
- break;
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Received state request result: %" PRId64 ".\n", result);
+
+ struct GNUNET_PSYC_StateRequest *sr = cls;
+
+ if (NULL != sr->result_cb)
+ sr->result_cb (sr->cls, result, data, data_size);
+
+ GNUNET_free (sr);
+}
- case GNUNET_YES:
- mst->tmit->status = GNUNET_PSYC_DATA_END;
- break;
- default:
- mst->tmit->status = GNUNET_PSYC_DATA_CANCEL;
- data_size = 0;
- LOG (GNUNET_ERROR_TYPE_ERROR, "MasterTransmitNotify returned error\n");
+static int
+check_channel_history_result (void *cls,
+ const struct GNUNET_OperationResultMessage *res)
+{
+ struct GNUNET_PSYC_MessageHeader *
+ pmsg = (struct GNUNET_PSYC_MessageHeader *) GNUNET_MQ_extract_nested_mh (res);
+ uint16_t size = ntohs (res->header.size);
+
+ if ( (NULL == pmsg) ||
+ (size < sizeof (*res) + sizeof (*pmsg)) )
+ { /* Error, message too small. */
+ GNUNET_break_op (0);
+ return GNUNET_SYSERR;
}
+ return GNUNET_OK;
+}
+
+
+static void
+handle_channel_history_result (void *cls,
+ const struct GNUNET_OperationResultMessage *res)
+{
+ struct GNUNET_PSYC_Channel *chn = cls;
+ struct GNUNET_PSYC_MessageHeader *
+ pmsg = (struct GNUNET_PSYC_MessageHeader *) GNUNET_MQ_extract_nested_mh (res);
+ GNUNET_ResultCallback result_cb = NULL;
+ struct GNUNET_PSYC_HistoryRequest *hist = NULL;
+
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "%p Received historic fragment for message #%" PRIu64 ".\n",
+ chn,
+ GNUNET_ntohll (pmsg->message_id));
+
+ if (GNUNET_YES != GNUNET_OP_get (chn->op,
+ GNUNET_ntohll (res->op_id),
+ &result_cb, (void *) &hist, NULL))
+ { /* Operation not found. */
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "%p Replay operation not found for historic fragment of message #%"
+ PRIu64 ".\n",
+ chn, GNUNET_ntohll (pmsg->message_id));
+ return;
+ }
+
+ GNUNET_PSYC_receive_message (hist->recv,
+ (const struct GNUNET_PSYC_MessageHeader *) pmsg);
+}
+
+
+static int
+check_channel_state_result (void *cls,
+ const struct GNUNET_OperationResultMessage *res)
+{
+ const struct GNUNET_MessageHeader *mod = GNUNET_MQ_extract_nested_mh (res);
+ uint16_t mod_size;
+ uint16_t size;
- if ((GNUNET_PSYC_DATA_CONT == mst->tmit->status && 0 == data_size))
+ if (NULL == mod)
{
- /* Transmission paused, nothing to send. */
- GNUNET_free (op);
+ GNUNET_break_op (0);
+ return GNUNET_SYSERR;
}
- else
+ mod_size = ntohs (mod->size);
+ size = ntohs (res->header.size);
+ if (size - sizeof (*res) != mod_size)
{
- GNUNET_assert (data_size <= ch->tmit_buf_avail);
- pdata->header.size = htons (sizeof (*pdata) + data_size);
- pdata->status = htons (mst->tmit->status);
- GNUNET_CONTAINER_DLL_insert_tail (ch->transmit_head, ch->transmit_tail, op);
- transmit_next (ch);
+ GNUNET_break_op (0);
+ return GNUNET_SYSERR;
}
+ return GNUNET_OK;
}
-/**
- * Type of a function to call when we receive a message
- * from the service.
- *
- * @param cls closure
- * @param msg message received, NULL on timeout or fatal error
- */
static void
-message_handler (void *cls,
- const struct GNUNET_MessageHeader *msg)
+handle_channel_state_result (void *cls,
+ const struct GNUNET_OperationResultMessage *res)
{
- // YUCK! => please have disjoint message handlers...
- struct GNUNET_PSYC_Channel *ch = cls;
- struct GNUNET_PSYC_Master *mst = cls;
- struct GNUNET_PSYC_Slave *slv = cls;
- struct CountersResult *cres;
- struct TransmitAck *tack;
+ struct GNUNET_PSYC_Channel *chn = cls;
+ GNUNET_ResultCallback result_cb = NULL;
+ struct GNUNET_PSYC_StateRequest *sr = NULL;
- if (NULL == msg)
- {
- reschedule_connect (ch);
+ if (GNUNET_YES != GNUNET_OP_get (chn->op,
+ GNUNET_ntohll (res->op_id),
+ &result_cb, (void *) &sr, NULL))
+ { /* Operation not found. */
return;
}
- uint16_t size_eq = 0;
- uint16_t size_min = 0;
- uint16_t size = ntohs (msg->size);
- uint16_t type = ntohs (msg->type);
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Received message of type %d from PSYC service\n", type);
+ const struct GNUNET_MessageHeader *mod = GNUNET_MQ_extract_nested_mh (res);
+ uint16_t mod_size = ntohs (mod->size);
- switch (type)
+ switch (ntohs (mod->type))
{
- case GNUNET_MESSAGE_TYPE_PSYC_MASTER_START_ACK:
- case GNUNET_MESSAGE_TYPE_PSYC_SLAVE_JOIN_ACK:
- size_eq = sizeof (struct CountersResult);
- break;
- case GNUNET_MESSAGE_TYPE_PSYC_TRANSMIT_ACK:
- size_eq = sizeof (struct TransmitAck);
+ case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_MODIFIER:
+ {
+ const struct GNUNET_PSYC_MessageModifier *
+ pmod = (const struct GNUNET_PSYC_MessageModifier *) mod;
+
+ const char *name = (const char *) &pmod[1];
+ uint16_t name_size = ntohs (pmod->name_size);
+ if ('\0' != name[name_size - 1])
+ {
+ GNUNET_break (0);
+ return;
+ }
+ sr->var_cb (sr->cls, mod, name, name + name_size,
+ ntohs (pmod->header.size) - sizeof (*pmod),
+ ntohs (pmod->value_size));
break;
}
- if (! ((0 < size_eq && size == size_eq)
- || (0 < size_min && size >= size_min)))
- {
- GNUNET_break (0);
- reschedule_connect (ch);
- return;
+ case GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_MOD_CONT:
+ sr->var_cb (sr->cls, mod, NULL, (const char *) &mod[1],
+ mod_size - sizeof (*mod), 0);
+ break;
}
+}
- switch (type)
- {
- case GNUNET_MESSAGE_TYPE_PSYC_MASTER_START_ACK:
- cres = (struct CountersResult *) msg;
- mst->max_message_id = GNUNET_ntohll (cres->max_message_id);
- if (NULL != mst->start_cb)
- mst->start_cb (ch->cb_cls, mst->max_message_id);
- break;
- case GNUNET_MESSAGE_TYPE_PSYC_SLAVE_JOIN_ACK:
- cres = (struct CountersResult *) msg;
-#if TODO
- slv->max_message_id = GNUNET_ntohll (cres->max_message_id);
- if (NULL != slv->join_ack_cb)
- mst->join_ack_cb (ch->cb_cls, mst->max_message_id);
-#endif
- break;
+static int
+check_channel_message (void *cls,
+ const struct GNUNET_PSYC_MessageHeader *pmsg)
+{
+ return GNUNET_OK;
+}
- case GNUNET_MESSAGE_TYPE_PSYC_TRANSMIT_ACK:
- tack = (struct TransmitAck *) msg;
- if (ch->is_master)
- {
- GNUNET_assert (NULL != mst->tmit);
- if (GNUNET_PSYC_DATA_CONT != mst->tmit->status
- || NULL == mst->tmit->notify)
- {
- GNUNET_free (mst->tmit);
- mst->tmit = NULL;
- }
- else
- {
- ch->tmit_buf_avail = ntohs (tack->buf_avail);
- master_transmit_data (mst);
- }
- }
- else
- {
- /* TODO: slave */
- }
- break;
- }
- GNUNET_CLIENT_receive (ch->client, &message_handler, ch,
- GNUNET_TIME_UNIT_FOREVER_REL);
+static void
+handle_channel_message (void *cls,
+ const struct GNUNET_PSYC_MessageHeader *pmsg)
+{
+ struct GNUNET_PSYC_Channel *chn = cls;
+
+ GNUNET_PSYC_receive_message (chn->recv, pmsg);
}
-/**
- * Transmit next message to service.
- *
- * @param cls The 'struct GNUNET_PSYC_Channel'.
- * @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)
+static void
+handle_channel_message_ack (void *cls,
+ const struct GNUNET_MessageHeader *msg)
{
- struct GNUNET_PSYC_Channel *ch = cls;
- struct OperationHandle *op = ch->transmit_head;
- size_t ret;
-
- ch->th = NULL;
- if (NULL == op->msg)
- return 0;
- ret = ntohs (op->msg->size);
- if (ret > size)
+ struct GNUNET_PSYC_Channel *chn = cls;
+
+ GNUNET_PSYC_transmit_got_ack (chn->tmit);
+}
+
+
+static void
+handle_master_start_ack (void *cls,
+ const struct GNUNET_PSYC_CountersResultMessage *cres)
+{
+ struct GNUNET_PSYC_Master *mst = cls;
+
+ int32_t result = ntohl (cres->result_code);
+ if (GNUNET_OK != result && GNUNET_NO != result)
{
- reschedule_connect (ch);
- return 0;
+ LOG (GNUNET_ERROR_TYPE_ERROR, "Could not start master: %ld\n", result);
+ GNUNET_break (0);
+ /* FIXME: disconnect */
}
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Sending message of type %d to PSYC service\n",
- ntohs (op->msg->type));
- memcpy (buf, op->msg, ret);
-
- GNUNET_CONTAINER_DLL_remove (ch->transmit_head, ch->transmit_tail, op);
- GNUNET_free (op);
+ if (NULL != mst->start_cb)
+ mst->start_cb (mst->cb_cls, result, GNUNET_ntohll (cres->max_message_id));
+}
- if (NULL != ch->transmit_head)
- transmit_next (ch);
- if (GNUNET_NO == ch->in_receive)
+static int
+check_master_join_request (void *cls,
+ const struct GNUNET_PSYC_JoinRequestMessage *req)
+{
+ if ( ((sizeof (*req) + sizeof (struct GNUNET_PSYC_Message)) <= ntohs (req->header.size)) &&
+ (NULL == GNUNET_MQ_extract_nested_mh (req)) )
{
- ch->in_receive = GNUNET_YES;
- GNUNET_CLIENT_receive (ch->client, &message_handler, ch,
- GNUNET_TIME_UNIT_FOREVER_REL);
+ GNUNET_break_op (0);
+ return GNUNET_SYSERR;
}
- return ret;
+ return GNUNET_OK;
}
-/**
- * Schedule transmission of the next message from our queue.
- *
- * @param ch PSYC handle.
- */
static void
-transmit_next (struct GNUNET_PSYC_Channel *ch)
+handle_master_join_request (void *cls,
+ const struct GNUNET_PSYC_JoinRequestMessage *req)
{
- if (NULL != ch->th || NULL == ch->client)
- return;
+ struct GNUNET_PSYC_Master *mst = cls;
- struct OperationHandle *op = ch->transmit_head;
- if (NULL == op)
+ if (NULL == mst->join_req_cb)
return;
- ch->th = GNUNET_CLIENT_notify_transmit_ready (ch->client,
- ntohs (op->msg->size),
- GNUNET_TIME_UNIT_FOREVER_REL,
- GNUNET_NO,
- &send_next_message,
- ch);
+ const struct GNUNET_PSYC_Message *join_msg = NULL;
+ if (sizeof (*req) + sizeof (*join_msg) <= ntohs (req->header.size))
+ {
+ join_msg = (struct GNUNET_PSYC_Message *) GNUNET_MQ_extract_nested_mh (req);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Received join_msg of type %u and size %u.\n",
+ ntohs (join_msg->header.type),
+ ntohs (join_msg->header.size));
+ }
+
+ struct GNUNET_PSYC_JoinHandle *jh = GNUNET_malloc (sizeof (*jh));
+ jh->mst = mst;
+ jh->slave_pub_key = req->slave_pub_key;
+
+ if (NULL != mst->join_req_cb)
+ mst->join_req_cb (mst->cb_cls, req, &req->slave_pub_key, join_msg, jh);
}
-/**
- * Try again to connect to the PSYC service.
- *
- * @param cls Channel handle.
- * @param tc Scheduler context.
- */
static void
-reconnect (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+handle_slave_join_ack (void *cls,
+ const struct GNUNET_PSYC_CountersResultMessage *cres)
{
- struct GNUNET_PSYC_Channel *ch = cls;
-
- ch->reconnect_task = GNUNET_SCHEDULER_NO_TASK;
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Connecting to PSYC service.\n");
- GNUNET_assert (NULL == ch->client);
- ch->client = GNUNET_CLIENT_connect ("psyc", ch->cfg);
- GNUNET_assert (NULL != ch->client);
+ struct GNUNET_PSYC_Slave *slv = cls;
- if (NULL == ch->transmit_head ||
- ch->transmit_head->msg->type != ch->reconnect_msg->type)
+ int32_t result = ntohl (cres->result_code);
+ if (GNUNET_YES != result && GNUNET_NO != result)
{
- uint16_t reconn_size = ntohs (ch->reconnect_msg->size);
- struct OperationHandle *op = GNUNET_malloc (sizeof (*op) + reconn_size);
- memcpy (&op[1], ch->reconnect_msg, reconn_size);
- op->msg = (struct GNUNET_MessageHeader *) &op[1];
- GNUNET_CONTAINER_DLL_insert (ch->transmit_head, ch->transmit_tail, op);
+ LOG (GNUNET_ERROR_TYPE_ERROR, "Could not join slave.\n");
+ GNUNET_break (0);
+ /* FIXME: disconnect */
}
- transmit_next (ch);
+ if (NULL != slv->connect_cb)
+ slv->connect_cb (slv->cb_cls, result, GNUNET_ntohll (cres->max_message_id));
+}
+
+
+static int
+check_slave_join_decision (void *cls,
+ const struct GNUNET_PSYC_JoinDecisionMessage *dcsn)
+{
+ return GNUNET_OK;
}
-/**
- * Disconnect from the PSYC service.
- *
- * @param c Channel handle to disconnect
- */
static void
-disconnect (void *c)
+handle_slave_join_decision (void *cls,
+ const struct GNUNET_PSYC_JoinDecisionMessage *dcsn)
{
- struct GNUNET_PSYC_Channel *ch = c;
+ struct GNUNET_PSYC_Slave *slv = cls;
+
+ struct GNUNET_PSYC_Message *pmsg = NULL;
+ if (ntohs (dcsn->header.size) <= sizeof (*dcsn) + sizeof (*pmsg))
+ pmsg = (struct GNUNET_PSYC_Message *) &dcsn[1];
+
+ if (NULL != slv->join_dcsn_cb)
+ slv->join_dcsn_cb (slv->cb_cls, dcsn, ntohl (dcsn->is_admitted), pmsg);
+}
+
- GNUNET_assert (NULL != ch);
- if (ch->transmit_head != ch->transmit_tail)
+static void
+channel_cleanup (struct GNUNET_PSYC_Channel *chn)
+{
+ if (NULL != chn->tmit)
{
- LOG (GNUNET_ERROR_TYPE_ERROR,
- "Disconnecting while there are still outstanding messages!\n");
- GNUNET_break (0);
+ GNUNET_PSYC_transmit_destroy (chn->tmit);
+ chn->tmit = NULL;
+ }
+ if (NULL != chn->recv)
+ {
+ GNUNET_PSYC_receive_destroy (chn->recv);
+ chn->recv = NULL;
+ }
+ if (NULL != chn->connect_env)
+ {
+ GNUNET_MQ_discard (chn->connect_env);
+ chn->connect_env = NULL;
+ }
+ if (NULL != chn->mq)
+ {
+ GNUNET_MQ_destroy (chn->mq);
+ chn->mq = NULL;
+ }
+ if (NULL != chn->disconnect_cb)
+ {
+ chn->disconnect_cb (chn->disconnect_cls);
+ chn->disconnect_cb = NULL;
}
- if (ch->reconnect_task != GNUNET_SCHEDULER_NO_TASK)
+ GNUNET_free (chn);
+}
+
+
+static void
+channel_disconnect (struct GNUNET_PSYC_Channel *chn,
+ GNUNET_ContinuationCallback cb,
+ void *cls)
+{
+ chn->is_disconnecting = GNUNET_YES;
+ chn->disconnect_cb = cb;
+ chn->disconnect_cls = cls;
+
+ if (NULL != chn->mq)
{
- GNUNET_SCHEDULER_cancel (ch->reconnect_task);
- ch->reconnect_task = GNUNET_SCHEDULER_NO_TASK;
+ struct GNUNET_MQ_Envelope *env = GNUNET_MQ_get_last_envelope (chn->mq);
+ if (NULL != env)
+ {
+ GNUNET_MQ_notify_sent (env, (GNUNET_MQ_NotifyCallback) channel_cleanup, chn);
+ }
+ else
+ {
+ channel_cleanup (chn);
+ }
}
- if (NULL != ch->th)
+ else
{
- GNUNET_CLIENT_notify_transmit_ready_cancel (ch->th);
- ch->th = NULL;
+ channel_cleanup (chn);
}
- if (NULL != ch->client)
+}
+
+
+/*** MASTER ***/
+
+
+static void
+master_connect (struct GNUNET_PSYC_Master *mst);
+
+
+static void
+master_reconnect (void *cls)
+{
+ master_connect (cls);
+}
+
+
+/**
+ * Master client disconnected from service.
+ *
+ * Reconnect after backoff period.
+ */
+static void
+master_disconnected (void *cls, enum GNUNET_MQ_Error error)
+{
+ struct GNUNET_PSYC_Master *mst = cls;
+ struct GNUNET_PSYC_Channel *chn = &mst->chn;
+
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Master client disconnected (%d), re-connecting\n",
+ (int) error);
+ if (NULL != chn->tmit)
{
- GNUNET_CLIENT_disconnect (ch->client);
- ch->client = NULL;
+ GNUNET_PSYC_transmit_destroy (chn->tmit);
+ chn->tmit = NULL;
}
- if (NULL != ch->reconnect_msg)
+ if (NULL != chn->mq)
{
- GNUNET_free (ch->reconnect_msg);
- ch->reconnect_msg = NULL;
+ GNUNET_MQ_destroy (chn->mq);
+ chn->mq = NULL;
}
+ chn->reconnect_task = GNUNET_SCHEDULER_add_delayed (chn->reconnect_delay,
+ master_reconnect,
+ mst);
+ chn->reconnect_delay = GNUNET_TIME_STD_BACKOFF (chn->reconnect_delay);
+}
+
+
+static void
+master_connect (struct GNUNET_PSYC_Master *mst)
+{
+ struct GNUNET_PSYC_Channel *chn = &mst->chn;
+
+ struct GNUNET_MQ_MessageHandler handlers[] = {
+ GNUNET_MQ_hd_fixed_size (master_start_ack,
+ GNUNET_MESSAGE_TYPE_PSYC_MASTER_START_ACK,
+ struct GNUNET_PSYC_CountersResultMessage,
+ mst),
+ GNUNET_MQ_hd_var_size (master_join_request,
+ GNUNET_MESSAGE_TYPE_PSYC_JOIN_REQUEST,
+ struct GNUNET_PSYC_JoinRequestMessage,
+ mst),
+ GNUNET_MQ_hd_var_size (channel_message,
+ GNUNET_MESSAGE_TYPE_PSYC_MESSAGE,
+ struct GNUNET_PSYC_MessageHeader,
+ chn),
+ GNUNET_MQ_hd_fixed_size (channel_message_ack,
+ GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_ACK,
+ struct GNUNET_MessageHeader,
+ chn),
+ GNUNET_MQ_hd_var_size (channel_history_result,
+ GNUNET_MESSAGE_TYPE_PSYC_HISTORY_RESULT,
+ struct GNUNET_OperationResultMessage,
+ chn),
+ GNUNET_MQ_hd_var_size (channel_state_result,
+ GNUNET_MESSAGE_TYPE_PSYC_STATE_RESULT,
+ struct GNUNET_OperationResultMessage,
+ chn),
+ GNUNET_MQ_hd_var_size (channel_result,
+ GNUNET_MESSAGE_TYPE_PSYC_RESULT_CODE,
+ struct GNUNET_OperationResultMessage,
+ chn),
+ GNUNET_MQ_handler_end ()
+ };
+
+ chn->mq = GNUNET_CLIENT_connecT (chn->cfg, "psyc",
+ handlers, master_disconnected, mst);
+ GNUNET_assert (NULL != chn->mq);
+ chn->tmit = GNUNET_PSYC_transmit_create (chn->mq);
+
+ GNUNET_MQ_send_copy (chn->mq, chn->connect_env);
}
* or part messages, the respective methods must call other PSYC functions to
* inform PSYC about the meaning of the respective events.
*
- * @param cfg Configuration to use (to connect to PSYC service).
- * @param channel_key ECC key that will be used to sign messages for this
+ * @param cfg Configuration to use (to connect to PSYC service).
+ * @param channel_key ECC key that will be used to sign messages for this
* PSYC session. The public key is used to identify the PSYC channel.
* Note that end-users will usually not use the private key directly, but
* rather look it up in GNS for places managed by other users, or select
* a file with the private key(s) when setting up their own channels
* FIXME: we'll likely want to use NOT the p521 curve here, but a cheaper
* one in the future.
- * @param policy Channel policy specifying join and history restrictions.
+ * @param policy Channel policy specifying join and history restrictions.
* Used to automate join decisions.
- * @param method Function to invoke on messages received from slaves.
- * @param join_cb Function to invoke when a peer wants to join.
- * @param master_started_cb Function to invoke after the channel master started.
- * @param cls Closure for @a master_started_cb and @a join_cb.
+ * @param message_cb Function to invoke on message parts received from slaves.
+ * @param join_request_cb Function to invoke when a slave wants to join.
+ * @param master_start_cb Function to invoke after the channel master started.
+ * @param cls Closure for @a method and @a join_cb.
+ *
* @return Handle for the channel master, NULL on error.
*/
struct GNUNET_PSYC_Master *
GNUNET_PSYC_master_start (const struct GNUNET_CONFIGURATION_Handle *cfg,
const struct GNUNET_CRYPTO_EddsaPrivateKey *channel_key,
enum GNUNET_PSYC_Policy policy,
- GNUNET_PSYC_Method method,
- GNUNET_PSYC_JoinCallback join_cb,
- GNUNET_PSYC_MasterStartCallback master_started_cb,
+ GNUNET_PSYC_MasterStartCallback start_cb,
+ GNUNET_PSYC_JoinRequestCallback join_request_cb,
+ GNUNET_PSYC_MessageCallback message_cb,
+ GNUNET_PSYC_MessagePartCallback message_part_cb,
void *cls)
{
- struct GNUNET_PSYC_Master *mst = GNUNET_malloc (sizeof (*mst));
- struct GNUNET_PSYC_Channel *ch = &mst->ch;
- struct MasterStartRequest *req = GNUNET_malloc (sizeof (*req));
+ struct GNUNET_PSYC_Master *mst = GNUNET_new (struct GNUNET_PSYC_Master);
+ struct GNUNET_PSYC_Channel *chn = &mst->chn;
+ struct MasterStartRequest *req;
- req->header.size = htons (sizeof (*req));
- req->header.type = htons (GNUNET_MESSAGE_TYPE_PSYC_MASTER_START);
+ chn->connect_env = GNUNET_MQ_msg (req,
+ GNUNET_MESSAGE_TYPE_PSYC_MASTER_START);
req->channel_key = *channel_key;
req->policy = policy;
- ch->cfg = cfg;
- ch->is_master = GNUNET_YES;
- ch->reconnect_msg = (struct GNUNET_MessageHeader *) req;
- ch->reconnect_delay = GNUNET_TIME_UNIT_ZERO;
- ch->reconnect_task = GNUNET_SCHEDULER_add_now (&reconnect, mst);
+ chn->cfg = cfg;
+ chn->is_master = GNUNET_YES;
+ chn->reconnect_delay = GNUNET_TIME_UNIT_MILLISECONDS;
+
+ chn->op = GNUNET_OP_create ();
+ chn->recv = GNUNET_PSYC_receive_create (message_cb, message_part_cb, cls);
- ch->method_cb = method;
- ch->join_cb = join_cb;
- ch->cb_cls = cls;
- mst->start_cb = master_started_cb;
+ mst->start_cb = start_cb;
+ mst->join_req_cb = join_request_cb;
+ mst->cb_cls = cls;
+ master_connect (mst);
return mst;
}
* Stop a PSYC master channel.
*
* @param master PSYC channel master to stop.
+ * @param keep_active FIXME
*/
void
-GNUNET_PSYC_master_stop (struct GNUNET_PSYC_Master *master)
+GNUNET_PSYC_master_stop (struct GNUNET_PSYC_Master *mst,
+ int keep_active,
+ GNUNET_ContinuationCallback stop_cb,
+ void *stop_cls)
{
- disconnect (master);
- GNUNET_free (master);
+ struct GNUNET_PSYC_Channel *chn = &mst->chn;
+
+ /* FIXME: send msg to service */
+
+ channel_disconnect (chn, stop_cb, stop_cls);
}
* #GNUNET_PSYC_JoinCallback.
*
* @param jh Join request handle.
- * @param is_admitted #GNUNET_YES if joining is approved,
- * #GNUNET_NO if it is disapproved.
+ * @param is_admitted #GNUNET_YES if the join is approved,
+ * #GNUNET_NO if it is disapproved,
+ * #GNUNET_SYSERR if we cannot answer the request.
* @param relay_count Number of relays given.
* @param relays Array of suggested peers that might be useful relays to use
* when joining the multicast group (essentially a list of peers that
* be the multicast origin) is a good candidate for building the
* multicast tree. Note that it is unnecessary to specify our own
* peer identity in this array.
- * @param method_name Method name for the message transmitted with the response.
- * @param env Environment containing transient variables for the message, or NULL.
- * @param data Data of the message.
- * @param data_size Size of @a data.
+ * @param join_resp Application-dependent join response message.
+ *
+ * @return #GNUNET_OK on success,
+ * #GNUNET_SYSERR if the message is too large.
*/
-void
+int
GNUNET_PSYC_join_decision (struct GNUNET_PSYC_JoinHandle *jh,
int is_admitted,
uint32_t relay_count,
const struct GNUNET_PeerIdentity *relays,
- const char *method_name,
- const struct GNUNET_ENV_Environment *env,
- const void *data,
- size_t data_size)
-{
-
-}
-
-
-/* FIXME: split up value into <64K chunks and transmit the continuations in
- * MOD_CONT msgs */
-static int
-send_modifier (void *cls, struct GNUNET_ENV_Modifier *mod)
+ const struct GNUNET_PSYC_Message *join_resp)
{
- struct GNUNET_PSYC_Channel *ch = cls;
- size_t name_size = strlen (mod->name) + 1;
- struct GNUNET_PSYC_MessageModifier *pmod;
- struct OperationHandle *op = GNUNET_malloc (sizeof (*op) + sizeof (*pmod)
- + name_size + mod->value_size);
- pmod = (struct GNUNET_PSYC_MessageModifier *) &op[1];
- op->msg = (struct GNUNET_MessageHeader *) pmod;
-
- pmod->header.type = htons (GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_MODIFIER);
- pmod->header.size = htons (sizeof (*pmod) + name_size + mod->value_size);
- pmod->name_size = htons (name_size);
- memcpy (&pmod[1], mod->name, name_size);
- memcpy ((char *) &pmod[1] + name_size, mod->value, mod->value_size);
-
- GNUNET_CONTAINER_DLL_insert_tail (ch->transmit_head, ch->transmit_tail, op);
- return GNUNET_YES;
+ struct GNUNET_PSYC_Channel *chn = &jh->mst->chn;
+ struct GNUNET_PSYC_JoinDecisionMessage *dcsn;
+ uint16_t join_resp_size
+ = (NULL != join_resp) ? ntohs (join_resp->header.size) : 0;
+ uint16_t relay_size = relay_count * sizeof (*relays);
+
+ if (GNUNET_MULTICAST_FRAGMENT_MAX_PAYLOAD
+ < sizeof (*dcsn) + relay_size + join_resp_size)
+ return GNUNET_SYSERR;
+
+ struct GNUNET_MQ_Envelope *
+ env = GNUNET_MQ_msg_extra (dcsn, relay_size + join_resp_size,
+ GNUNET_MESSAGE_TYPE_PSYC_JOIN_DECISION);
+ dcsn->is_admitted = htonl (is_admitted);
+ dcsn->slave_pub_key = jh->slave_pub_key;
+
+ if (0 < join_resp_size)
+ GNUNET_memcpy (&dcsn[1], join_resp, join_resp_size);
+
+ GNUNET_MQ_send (chn->mq, env);
+ GNUNET_free (jh);
+ return GNUNET_OK;
}
*
* @param master Handle to the PSYC channel.
* @param method_name Which method should be invoked.
- * @param env Environment containing state operations and transient variables
- * for the message, or NULL.
- * @param notify Function to call to obtain the arguments.
- * @param notify_cls Closure for @a notify.
+ * @param notify_mod Function to call to obtain modifiers.
+ * @param notify_data Function to call to obtain fragments of the data.
+ * @param notify_cls Closure for @a notify_mod and @a notify_data.
* @param flags Flags for the message being transmitted.
- * @return Transmission handle, NULL on error (i.e. more than one request
- * queued).
+ *
+ * @return Transmission handle, NULL on error (i.e. more than one request queued).
*/
struct GNUNET_PSYC_MasterTransmitHandle *
-GNUNET_PSYC_master_transmit (struct GNUNET_PSYC_Master *master,
+GNUNET_PSYC_master_transmit (struct GNUNET_PSYC_Master *mst,
const char *method_name,
- const struct GNUNET_ENV_Environment *env,
- GNUNET_PSYC_MasterTransmitNotify notify,
+ GNUNET_PSYC_TransmitNotifyModifier notify_mod,
+ GNUNET_PSYC_TransmitNotifyData notify_data,
void *notify_cls,
enum GNUNET_PSYC_MasterTransmitFlags flags)
{
- GNUNET_assert (NULL != master);
- struct GNUNET_PSYC_Channel *ch = &master->ch;
- if (GNUNET_NO != ch->in_transmit)
+ if (GNUNET_OK
+ == GNUNET_PSYC_transmit_message (mst->chn.tmit, method_name, NULL,
+ notify_mod, notify_data, notify_cls,
+ flags))
+ return (struct GNUNET_PSYC_MasterTransmitHandle *) mst->chn.tmit;
+ else
return NULL;
- ch->in_transmit = GNUNET_YES;
-
- size_t size = strlen (method_name) + 1;
- struct GNUNET_PSYC_MessageMethod *pmeth;
- struct OperationHandle *op
- = GNUNET_malloc (sizeof (*op) + sizeof (*pmeth) + size);
- pmeth = (struct GNUNET_PSYC_MessageMethod *) &op[1];
- op->msg = (struct GNUNET_MessageHeader *) pmeth;
-
- pmeth->header.type = htons (GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_METHOD);
- pmeth->header.size = htons (sizeof (*pmeth) + size);
- pmeth->flags = htonl (flags);
- pmeth->mod_count = GNUNET_ntohll (GNUNET_ENV_environment_get_mod_count (env));
- memcpy (&pmeth[1], method_name, size);
-
- GNUNET_CONTAINER_DLL_insert_tail (ch->transmit_head, ch->transmit_tail, op);
- GNUNET_ENV_environment_iterate (env, send_modifier, master);
- transmit_next (ch);
-
- master->tmit = GNUNET_malloc (sizeof (*master->tmit));
- master->tmit->master = master;
- master->tmit->notify = notify;
- master->tmit->notify_cls = notify_cls;
- master->tmit->status = GNUNET_PSYC_DATA_CONT;
- return master->tmit;
}
/**
* Resume transmission to the channel.
*
- * @param th Handle of the request that is being resumed.
+ * @param tmit Handle of the request that is being resumed.
*/
void
-GNUNET_PSYC_master_transmit_resume (struct GNUNET_PSYC_MasterTransmitHandle *th)
+GNUNET_PSYC_master_transmit_resume (struct GNUNET_PSYC_MasterTransmitHandle *tmit)
{
- master_transmit_data (th->master);
+ GNUNET_PSYC_transmit_resume ((struct GNUNET_PSYC_TransmitHandle *) tmit);
}
/**
* Abort transmission request to the channel.
*
- * @param th Handle of the request that is being aborted.
+ * @param tmit Handle of the request that is being aborted.
*/
void
-GNUNET_PSYC_master_transmit_cancel (struct GNUNET_PSYC_MasterTransmitHandle *th)
+GNUNET_PSYC_master_transmit_cancel (struct GNUNET_PSYC_MasterTransmitHandle *tmit)
{
- struct GNUNET_PSYC_Master *master = th->master;
- struct GNUNET_PSYC_Channel *ch = &master->ch;
- if (GNUNET_NO != ch->in_transmit)
- return;
+ GNUNET_PSYC_transmit_cancel ((struct GNUNET_PSYC_TransmitHandle *) tmit);
+}
+
+
+/**
+ * Convert a channel @a master to a @e channel handle to access the @e channel
+ * APIs.
+ *
+ * @param master Channel master handle.
+ *
+ * @return Channel handle, valid for as long as @a master is valid.
+ */
+struct GNUNET_PSYC_Channel *
+GNUNET_PSYC_master_get_channel (struct GNUNET_PSYC_Master *master)
+{
+ return &master->chn;
+}
+
+
+/*** SLAVE ***/
+
+
+static void
+slave_connect (struct GNUNET_PSYC_Slave *slv);
+
+
+static void
+slave_reconnect (void *cls)
+{
+ slave_connect (cls);
+}
+
+
+/**
+ * Slave client disconnected from service.
+ *
+ * Reconnect after backoff period.
+ */
+static void
+slave_disconnected (void *cls, enum GNUNET_MQ_Error error)
+{
+ struct GNUNET_PSYC_Slave *slv = cls;
+ struct GNUNET_PSYC_Channel *chn = &slv->chn;
+
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Slave client disconnected (%d), re-connecting\n",
+ (int) error);
+ if (NULL != chn->tmit)
+ {
+ GNUNET_PSYC_transmit_destroy (chn->tmit);
+ chn->tmit = NULL;
+ }
+ if (NULL != chn->mq)
+ {
+ GNUNET_MQ_destroy (chn->mq);
+ chn->mq = NULL;
+ }
+ chn->reconnect_task = GNUNET_SCHEDULER_add_delayed (chn->reconnect_delay,
+ slave_reconnect,
+ slv);
+ chn->reconnect_delay = GNUNET_TIME_STD_BACKOFF (chn->reconnect_delay);
+}
+
+
+static void
+slave_connect (struct GNUNET_PSYC_Slave *slv)
+{
+ struct GNUNET_PSYC_Channel *chn = &slv->chn;
+
+ struct GNUNET_MQ_MessageHandler handlers[] = {
+ GNUNET_MQ_hd_fixed_size (slave_join_ack,
+ GNUNET_MESSAGE_TYPE_PSYC_SLAVE_JOIN_ACK,
+ struct GNUNET_PSYC_CountersResultMessage,
+ slv),
+ GNUNET_MQ_hd_var_size (slave_join_decision,
+ GNUNET_MESSAGE_TYPE_PSYC_JOIN_DECISION,
+ struct GNUNET_PSYC_JoinDecisionMessage,
+ slv),
+ GNUNET_MQ_hd_var_size (channel_message,
+ GNUNET_MESSAGE_TYPE_PSYC_MESSAGE,
+ struct GNUNET_PSYC_MessageHeader,
+ chn),
+ GNUNET_MQ_hd_fixed_size (channel_message_ack,
+ GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_ACK,
+ struct GNUNET_MessageHeader,
+ chn),
+ GNUNET_MQ_hd_var_size (channel_history_result,
+ GNUNET_MESSAGE_TYPE_PSYC_HISTORY_RESULT,
+ struct GNUNET_OperationResultMessage,
+ chn),
+ GNUNET_MQ_hd_var_size (channel_state_result,
+ GNUNET_MESSAGE_TYPE_PSYC_STATE_RESULT,
+ struct GNUNET_OperationResultMessage,
+ chn),
+ GNUNET_MQ_hd_var_size (channel_result,
+ GNUNET_MESSAGE_TYPE_PSYC_RESULT_CODE,
+ struct GNUNET_OperationResultMessage,
+ chn),
+ GNUNET_MQ_handler_end ()
+ };
+
+ chn->mq = GNUNET_CLIENT_connecT (chn->cfg, "psyc",
+ handlers, slave_disconnected, slv);
+ GNUNET_assert (NULL != chn->mq);
+ chn->tmit = GNUNET_PSYC_transmit_create (chn->mq);
+
+ GNUNET_MQ_send_copy (chn->mq, chn->connect_env);
}
* notification on failure (as the channel may simply take days to approve,
* and disapproval is simply being ignored).
*
- * @param cfg Configuration to use.
- * @param channel_key ECC public key that identifies the channel we wish to join.
- * @param slave_key ECC private-public key pair that identifies the slave, and
+ * @param cfg
+ * Configuration to use.
+ * @param channel_key ECC public key that identifies the channel we wish to join.
+ * @param slave_key ECC private-public key pair that identifies the slave, and
* used by multicast to sign the join request and subsequent unicast
* requests sent to the master.
- * @param origin Peer identity of the origin.
- * @param relay_count Number of peers in the @a relays array.
- * @param relays Peer identities of members of the multicast group, which serve
+ * @param origin Peer identity of the origin.
+ * @param relay_count Number of peers in the @a relays array.
+ * @param relays Peer identities of members of the multicast group, which serve
* as relays and used to join the group at.
- * @param method Function to invoke on messages received from the channel,
- * typically at least contains functions for @e join and @e part.
- * @param join_cb function invoked once we have joined with the current
- * message ID of the channel
- * @param slave_joined_cb Function to invoke when a peer wants to join.
- * @param cls Closure for @a method_cb and @a slave_joined_cb.
- * @param method_name Method name for the join request.
- * @param env Environment containing transient variables for the request, or NULL.
- * @param data Payload for the join message.
- * @param data_size Number of bytes in @a data.
+ * @param message_cb Function to invoke on message parts received from the
+ * channel, typically at least contains method handlers for @e join and
+ * @e part.
+ * @param slave_connect_cb Function invoked once we have connected to the
+ * PSYC service.
+ * @param join_decision_cb Function invoked once we have received a join
+ * decision.
+ * @param cls Closure for @a message_cb and @a slave_joined_cb.
+ * @param method_name Method name for the join request.
+ * @param env Environment containing transient variables for the request, or NULL.
+ * @param data Payload for the join message.
+ * @param data_size Number of bytes in @a data.
+ *
* @return Handle for the slave, NULL on error.
*/
struct GNUNET_PSYC_Slave *
GNUNET_PSYC_slave_join (const struct GNUNET_CONFIGURATION_Handle *cfg,
- const struct GNUNET_CRYPTO_EddsaPublicKey *channel_key,
- const struct GNUNET_CRYPTO_EddsaPrivateKey *slave_key,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *channel_pub_key,
+ const struct GNUNET_CRYPTO_EcdsaPrivateKey *slave_key,
+ enum GNUNET_PSYC_SlaveJoinFlags flags,
const struct GNUNET_PeerIdentity *origin,
uint32_t relay_count,
const struct GNUNET_PeerIdentity *relays,
- GNUNET_PSYC_Method method,
- GNUNET_PSYC_JoinCallback join_cb,
- GNUNET_PSYC_SlaveJoinCallback slave_joined_cb,
+ GNUNET_PSYC_MessageCallback message_cb,
+ GNUNET_PSYC_MessagePartCallback message_part_cb,
+ GNUNET_PSYC_SlaveConnectCallback connect_cb,
+ GNUNET_PSYC_JoinDecisionCallback join_decision_cb,
void *cls,
- const char *method_name,
- const struct GNUNET_ENV_Environment *env,
- const void *data,
- uint16_t data_size)
+ const struct GNUNET_PSYC_Message *join_msg)
{
struct GNUNET_PSYC_Slave *slv = GNUNET_malloc (sizeof (*slv));
- struct GNUNET_PSYC_Channel *ch = &slv->ch;
- struct SlaveJoinRequest *req = GNUNET_malloc (sizeof (*req));
+ struct GNUNET_PSYC_Channel *chn = &slv->chn;
+ uint16_t relay_size = relay_count * sizeof (*relays);
+ uint16_t join_msg_size;
+ if (NULL == join_msg)
+ join_msg_size = 0;
+ else
+ join_msg_size = ntohs (join_msg->header.size);
- req->header.size = htons (sizeof (*req)
- + sizeof (*channel_key) + sizeof (*slave_key)
- + relay_count * sizeof (*relays));
- req->header.type = htons (GNUNET_MESSAGE_TYPE_PSYC_SLAVE_JOIN);
- req->channel_key = *channel_key;
+ struct SlaveJoinRequest *req;
+ chn->connect_env = GNUNET_MQ_msg_extra (req, relay_size + join_msg_size,
+ GNUNET_MESSAGE_TYPE_PSYC_SLAVE_JOIN);
+ req->channel_pub_key = *channel_pub_key;
req->slave_key = *slave_key;
req->origin = *origin;
- req->relay_count = relay_count;
- memcpy (&req[1], relays, relay_count * sizeof (*relays));
+ req->relay_count = htonl (relay_count);
+ req->flags = htonl (flags);
+
+ if (0 < relay_size)
+ GNUNET_memcpy (&req[1], relays, relay_size);
- ch->cfg = cfg;
- ch->is_master = GNUNET_NO;
- ch->reconnect_msg = (struct GNUNET_MessageHeader *) req;
- ch->reconnect_delay = GNUNET_TIME_UNIT_ZERO;
- ch->reconnect_task = GNUNET_SCHEDULER_add_now (&reconnect, slv);
+ if (NULL != join_msg)
+ GNUNET_memcpy ((char *) &req[1] + relay_size, join_msg, join_msg_size);
+ chn->cfg = cfg;
+ chn->is_master = GNUNET_NO;
+ chn->reconnect_delay = GNUNET_TIME_UNIT_MILLISECONDS;
+
+ chn->op = GNUNET_OP_create ();
+ chn->recv = GNUNET_PSYC_receive_create (message_cb, message_part_cb, cls);
+
+ slv->connect_cb = connect_cb;
+ slv->join_dcsn_cb = join_decision_cb;
+ slv->cb_cls = cls;
+
+ slave_connect (slv);
return slv;
}
* @param slave Slave handle.
*/
void
-GNUNET_PSYC_slave_part (struct GNUNET_PSYC_Slave *slave)
+GNUNET_PSYC_slave_part (struct GNUNET_PSYC_Slave *slv,
+ int keep_active,
+ GNUNET_ContinuationCallback part_cb,
+ void *part_cls)
{
- disconnect (slave);
- GNUNET_free (slave);
+ struct GNUNET_PSYC_Channel *chn = &slv->chn;
+
+ /* FIXME: send msg to service */
+
+ channel_disconnect (chn, part_cb, part_cls);
}
*
* @param slave Slave handle.
* @param method_name Which (PSYC) method should be invoked (on host).
- * @param env Environment containing transient variables for the message, or
- * NULL.
- * @param notify Function to call when we are allowed to transmit (to get data).
+ * @param notify_mod Function to call to obtain modifiers.
+ * @param notify_data Function to call to obtain fragments of the data.
* @param notify_cls Closure for @a notify.
* @param flags Flags for the message being transmitted.
+ *
* @return Transmission handle, NULL on error (i.e. more than one request
* queued).
*/
struct GNUNET_PSYC_SlaveTransmitHandle *
-GNUNET_PSYC_slave_transmit (struct GNUNET_PSYC_Slave *slave,
+GNUNET_PSYC_slave_transmit (struct GNUNET_PSYC_Slave *slv,
const char *method_name,
- const struct GNUNET_ENV_Environment *env,
- GNUNET_PSYC_SlaveTransmitNotify notify,
+ GNUNET_PSYC_TransmitNotifyModifier notify_mod,
+ GNUNET_PSYC_TransmitNotifyData notify_data,
void *notify_cls,
enum GNUNET_PSYC_SlaveTransmitFlags flags)
+
{
- return NULL;
+ if (GNUNET_OK
+ == GNUNET_PSYC_transmit_message (slv->chn.tmit, method_name, NULL,
+ notify_mod, notify_data, notify_cls,
+ flags))
+ return (struct GNUNET_PSYC_SlaveTransmitHandle *) slv->chn.tmit;
+ else
+ return NULL;
}
/**
* Resume transmission to the master.
*
- * @param th Handle of the request that is being resumed.
+ * @param tmit Handle of the request that is being resumed.
*/
void
-GNUNET_PSYC_slave_transmit_resume (struct GNUNET_PSYC_MasterTransmitHandle *th)
+GNUNET_PSYC_slave_transmit_resume (struct GNUNET_PSYC_SlaveTransmitHandle *tmit)
{
-
+ GNUNET_PSYC_transmit_resume ((struct GNUNET_PSYC_TransmitHandle *) tmit);
}
/**
* Abort transmission request to master.
*
- * @param th Handle of the request that is being aborted.
+ * @param tmit Handle of the request that is being aborted.
*/
void
-GNUNET_PSYC_slave_transmit_cancel (struct GNUNET_PSYC_SlaveTransmitHandle *th)
+GNUNET_PSYC_slave_transmit_cancel (struct GNUNET_PSYC_SlaveTransmitHandle *tmit)
{
-
-}
-
-
-/**
- * Convert a channel @a master to a @e channel handle to access the @e channel
- * APIs.
- *
- * @param master Channel master handle.
- * @return Channel handle, valid for as long as @a master is valid.
- */
-struct GNUNET_PSYC_Channel *
-GNUNET_PSYC_master_get_channel (struct GNUNET_PSYC_Master *master)
-{
- return (struct GNUNET_PSYC_Channel *) master;
+ GNUNET_PSYC_transmit_cancel ((struct GNUNET_PSYC_TransmitHandle *) tmit);
}
/**
* Convert @a slave to a @e channel handle to access the @e channel APIs.
*
- * @param slave Slave handle.
+ * @param slv Slave handle.
+ *
* @return Channel handle, valid for as long as @a slave is valid.
*/
struct GNUNET_PSYC_Channel *
-GNUNET_PSYC_slave_get_channel (struct GNUNET_PSYC_Slave *slave)
+GNUNET_PSYC_slave_get_channel (struct GNUNET_PSYC_Slave *slv)
{
- return (struct GNUNET_PSYC_Channel *) slave;
+ return &slv->chn;
}
* correctly; not doing so correctly will result in either denying other slaves
* access or offering access to channel data to non-members.
*
- * @param channel Channel handle.
- * @param slave_key Identity of channel slave to add.
- * @param announced_at ID of the message that announced the membership change.
- * @param effective_since Addition of slave is in effect since this message ID.
+ * @param chn
+ * Channel handle.
+ * @param slave_pub_key
+ * Identity of channel slave to add.
+ * @param announced_at
+ * ID of the message that announced the membership change.
+ * @param effective_since
+ * Addition of slave is in effect since this message ID.
+ * @param result_cb
+ * Function to call with the result of the operation.
+ * The @e result_code argument is #GNUNET_OK on success, or
+ * #GNUNET_SYSERR on error. In case of an error, the @e data argument
+ * can contain an optional error message.
+ * @param cls
+ * Closure for @a result_cb.
*/
void
-GNUNET_PSYC_channel_slave_add (struct GNUNET_PSYC_Channel *channel,
- const struct GNUNET_CRYPTO_EddsaPublicKey *slave_key,
+GNUNET_PSYC_channel_slave_add (struct GNUNET_PSYC_Channel *chn,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *slave_pub_key,
uint64_t announced_at,
- uint64_t effective_since)
+ uint64_t effective_since,
+ GNUNET_ResultCallback result_cb,
+ void *cls)
{
- struct ChannelSlaveAdd *slvadd;
- struct OperationHandle *op = GNUNET_malloc (sizeof (*op) + sizeof (*slvadd));
-
- slvadd = (struct ChannelSlaveAdd *) &op[1];
- op->msg = (struct GNUNET_MessageHeader *) slvadd;
-
- slvadd->header.type = GNUNET_MESSAGE_TYPE_PSYC_CHANNEL_SLAVE_ADD;
- slvadd->header.size = htons (sizeof (*slvadd));
- slvadd->announced_at = GNUNET_htonll (announced_at);
- slvadd->effective_since = GNUNET_htonll (effective_since);
- GNUNET_CONTAINER_DLL_insert_tail (channel->transmit_head,
- channel->transmit_tail,
- op);
- transmit_next (channel);
+ struct ChannelMembershipStoreRequest *req;
+ struct GNUNET_MQ_Envelope *
+ env = GNUNET_MQ_msg (req, GNUNET_MESSAGE_TYPE_PSYC_CHANNEL_MEMBERSHIP_STORE);
+ req->slave_pub_key = *slave_pub_key;
+ req->announced_at = GNUNET_htonll (announced_at);
+ req->effective_since = GNUNET_htonll (effective_since);
+ req->did_join = GNUNET_YES;
+ req->op_id = GNUNET_htonll (GNUNET_OP_add (chn->op, result_cb, cls, NULL));
+
+ GNUNET_MQ_send (chn->mq, env);
}
* denying members access or offering access to channel data to
* non-members.
*
- * @param channel Channel handle.
- * @param slave_key Identity of channel slave to remove.
- * @param announced_at ID of the message that announced the membership change.
+ * @param chn
+ * Channel handle.
+ * @param slave_pub_key
+ * Identity of channel slave to remove.
+ * @param announced_at
+ * ID of the message that announced the membership change.
+ * @param result_cb
+ * Function to call with the result of the operation.
+ * The @e result_code argument is #GNUNET_OK on success, or
+ * #GNUNET_SYSERR on error. In case of an error, the @e data argument
+ * can contain an optional error message.
+ * @param cls
+ * Closure for @a result_cb.
*/
void
-GNUNET_PSYC_channel_slave_remove (struct GNUNET_PSYC_Channel *channel,
- const struct GNUNET_CRYPTO_EddsaPublicKey *slave_key,
- uint64_t announced_at)
+GNUNET_PSYC_channel_slave_remove (struct GNUNET_PSYC_Channel *chn,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *slave_pub_key,
+ uint64_t announced_at,
+ GNUNET_ResultCallback result_cb,
+ void *cls)
{
- struct ChannelSlaveRemove *slvrm;
- struct OperationHandle *op = GNUNET_malloc (sizeof (*op) + sizeof (*slvrm));
-
- slvrm = (struct ChannelSlaveRemove *) &op[1];
- op->msg = (struct GNUNET_MessageHeader *) slvrm;
- slvrm->header.type = GNUNET_MESSAGE_TYPE_PSYC_CHANNEL_SLAVE_RM;
- slvrm->header.size = htons (sizeof (*slvrm));
- slvrm->announced_at = GNUNET_htonll (announced_at);
- GNUNET_CONTAINER_DLL_insert_tail (channel->transmit_head,
- channel->transmit_tail,
- op);
- transmit_next (channel);
+ struct ChannelMembershipStoreRequest *req;
+ struct GNUNET_MQ_Envelope *
+ env = GNUNET_MQ_msg (req, GNUNET_MESSAGE_TYPE_PSYC_CHANNEL_MEMBERSHIP_STORE);
+ req->slave_pub_key = *slave_pub_key;
+ req->announced_at = GNUNET_htonll (announced_at);
+ req->did_join = GNUNET_NO;
+ req->op_id = GNUNET_htonll (GNUNET_OP_add (chn->op, result_cb, cls, NULL));
+
+ GNUNET_MQ_send (chn->mq, env);
+}
+
+
+static struct GNUNET_PSYC_HistoryRequest *
+channel_history_replay (struct GNUNET_PSYC_Channel *chn,
+ uint64_t start_message_id,
+ uint64_t end_message_id,
+ uint64_t message_limit,
+ const char *method_prefix,
+ uint32_t flags,
+ GNUNET_PSYC_MessageCallback message_cb,
+ GNUNET_PSYC_MessagePartCallback message_part_cb,
+ GNUNET_ResultCallback result_cb,
+ void *cls)
+{
+ struct GNUNET_PSYC_HistoryRequestMessage *req;
+ struct GNUNET_PSYC_HistoryRequest *hist = GNUNET_malloc (sizeof (*hist));
+ hist->chn = chn;
+ hist->recv = GNUNET_PSYC_receive_create (message_cb, message_part_cb, cls);
+ hist->result_cb = result_cb;
+ hist->cls = cls;
+ hist->op_id = GNUNET_OP_add (chn->op, op_recv_history_result, hist, NULL);
+
+ GNUNET_assert (NULL != 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_MQ_Envelope *
+ env = GNUNET_MQ_msg_extra (req, method_size,
+ GNUNET_MESSAGE_TYPE_PSYC_HISTORY_REPLAY);
+ req->start_message_id = GNUNET_htonll (start_message_id);
+ req->end_message_id = GNUNET_htonll (end_message_id);
+ req->message_limit = GNUNET_htonll (message_limit);
+ req->flags = htonl (flags);
+ req->op_id = GNUNET_htonll (hist->op_id);
+ GNUNET_memcpy (&req[1], method_prefix, method_size);
+
+ GNUNET_MQ_send (chn->mq, env);
+ return hist;
}
/**
- * Request to be told the message history of the channel.
+ * Request to replay a part of the message history of the channel.
*
- * Historic messages (but NOT the state at the time) will be replayed (given to
- * the normal method handlers) if available and if access is permitted.
+ * Historic messages (but NOT the state at the time) will be replayed and given
+ * to the normal method handlers with a #GNUNET_PSYC_MESSAGE_HISTORIC flag set.
*
- * To get the latest message, use 0 for both the start and end message ID.
+ * Messages are retrieved from the local PSYCstore if available,
+ * otherwise requested from the network.
*
- * @param channel Which channel should be replayed?
- * @param start_message_id Earliest interesting point in history.
- * @param end_message_id Last (exclusive) interesting point in history.
- * @param method Function to invoke on messages received from the story.
- * @param finish_cb Function to call when the requested story has been fully
- * told (counting message IDs might not suffice, as some messages
- * might be secret and thus the listener would not know the story is
- * finished without being told explicitly) once this function
- * has been called, the client must not call
- * GNUNET_PSYC_channel_story_tell_cancel() anymore.
- * @param cls Closure for the callbacks.
- * @return Handle to cancel story telling operation.
+ * @param channel
+ * Which channel should be replayed?
+ * @param start_message_id
+ * Earliest interesting point in history.
+ * @param end_message_id
+ * Last (inclusive) interesting point in history.
+ * @param method_prefix
+ * Retrieve only messages with a matching method prefix.
+ * @param flags
+ * OR'ed enum GNUNET_PSYC_HistoryReplayFlags
+ * @param result_cb
+ * Function to call when the requested history has been fully replayed.
+ * @param cls
+ * Closure for the callbacks.
+ *
+ * @return Handle to cancel history replay operation.
*/
-struct GNUNET_PSYC_Story *
-GNUNET_PSYC_channel_story_tell (struct GNUNET_PSYC_Channel *channel,
- uint64_t start_message_id,
- uint64_t end_message_id,
- GNUNET_PSYC_Method method,
- GNUNET_PSYC_FinishCallback *finish_cb,
- void *cls)
+struct GNUNET_PSYC_HistoryRequest *
+GNUNET_PSYC_channel_history_replay (struct GNUNET_PSYC_Channel *chn,
+ uint64_t start_message_id,
+ uint64_t end_message_id,
+ const char *method_prefix,
+ uint32_t flags,
+ GNUNET_PSYC_MessageCallback message_cb,
+ GNUNET_PSYC_MessagePartCallback message_part_cb,
+ GNUNET_ResultCallback result_cb,
+ void *cls)
{
- return NULL;
+ return channel_history_replay (chn, start_message_id, end_message_id, 0,
+ method_prefix, flags,
+ message_cb, message_part_cb, result_cb, cls);
}
/**
- * Abort story telling.
+ * Request to replay the latest messages from the message history of the channel.
*
- * This function must not be called from within method handlers (as given to
- * GNUNET_PSYC_slave_join()) of the slave.
+ * Historic messages (but NOT the state at the time) will be replayed (given to
+ * the normal method handlers) if available and if access is permitted.
+ *
+ * @param channel
+ * Which channel should be replayed?
+ * @param message_limit
+ * Maximum number of messages to replay.
+ * @param method_prefix
+ * Retrieve only messages with a matching method prefix.
+ * Use NULL or "" to retrieve all.
+ * @param flags
+ * OR'ed enum GNUNET_PSYC_HistoryReplayFlags
+ * @param result_cb
+ * Function to call when the requested history has been fully replayed.
+ * @param cls
+ * Closure for the callbacks.
*
- * @param story Story telling operation to stop.
+ * @return Handle to cancel history replay operation.
*/
+struct GNUNET_PSYC_HistoryRequest *
+GNUNET_PSYC_channel_history_replay_latest (struct GNUNET_PSYC_Channel *chn,
+ uint64_t message_limit,
+ const char *method_prefix,
+ uint32_t flags,
+ GNUNET_PSYC_MessageCallback message_cb,
+ GNUNET_PSYC_MessagePartCallback message_part_cb,
+ GNUNET_ResultCallback result_cb,
+ void *cls)
+{
+ return channel_history_replay (chn, 0, 0, message_limit, method_prefix, flags,
+ message_cb, message_part_cb, result_cb, cls);
+}
+
+
void
-GNUNET_PSYC_channel_story_tell_cancel (struct GNUNET_PSYC_Story *story)
+GNUNET_PSYC_channel_history_replay_cancel (struct GNUNET_PSYC_Channel *channel,
+ struct GNUNET_PSYC_HistoryRequest *hist)
{
+ GNUNET_PSYC_receive_destroy (hist->recv);
+ GNUNET_OP_remove (hist->chn->op, hist->op_id);
+ GNUNET_free (hist);
+}
+
+/**
+ * Retrieve the best matching channel state variable.
+ *
+ * If the requested variable name is not present in the state, the nearest
+ * less-specific name is matched; for example, requesting "_a_b" will match "_a"
+ * if "_a_b" does not exist.
+ *
+ * @param channel
+ * Channel handle.
+ * @param full_name
+ * Full name of the requested variable.
+ * The actual variable returned might have a shorter name.
+ * @param var_cb
+ * Function called once when a matching state variable is found.
+ * Not called if there's no matching state variable.
+ * @param result_cb
+ * Function called after the operation finished.
+ * (i.e. all state variables have been returned via @a state_cb)
+ * @param cls
+ * Closure for the callbacks.
+ */
+static struct GNUNET_PSYC_StateRequest *
+channel_state_get (struct GNUNET_PSYC_Channel *chn,
+ uint16_t type, const char *name,
+ GNUNET_PSYC_StateVarCallback var_cb,
+ GNUNET_ResultCallback result_cb, void *cls)
+{
+ struct StateRequest *req;
+ struct GNUNET_PSYC_StateRequest *sr = GNUNET_malloc (sizeof (*sr));
+ sr->chn = chn;
+ sr->var_cb = var_cb;
+ sr->result_cb = result_cb;
+ sr->cls = cls;
+ sr->op_id = GNUNET_OP_add (chn->op, op_recv_state_result, sr, NULL);
+
+ GNUNET_assert (NULL != name);
+ size_t name_size = strnlen (name, GNUNET_SERVER_MAX_MESSAGE_SIZE
+ - sizeof (*req)) + 1;
+ struct GNUNET_MQ_Envelope *
+ env = GNUNET_MQ_msg_extra (req, name_size, type);
+ req->op_id = GNUNET_htonll (sr->op_id);
+ GNUNET_memcpy (&req[1], name, name_size);
+
+ GNUNET_MQ_send (chn->mq, env);
+ return sr;
}
* less-specific name is matched; for example, requesting "_a_b" will match "_a"
* if "_a_b" does not exist.
*
- * @param channel Channel handle.
- * @param full_name Full name of the requested variable, the actual variable
- * returned might have a shorter name..
- * @param cb Function called once when a matching state variable is found.
+ * @param channel
+ * Channel handle.
+ * @param full_name
+ * Full name of the requested variable.
+ * The actual variable returned might have a shorter name.
+ * @param var_cb
+ * Function called once when a matching state variable is found.
* Not called if there's no matching state variable.
- * @param cb_cls Closure for the callbacks.
- * @return Handle that can be used to cancel the query operation.
+ * @param result_cb
+ * Function called after the operation finished.
+ * (i.e. all state variables have been returned via @a state_cb)
+ * @param cls
+ * Closure for the callbacks.
*/
-struct GNUNET_PSYC_StateQuery *
-GNUNET_PSYC_channel_state_get (struct GNUNET_PSYC_Channel *channel,
+struct GNUNET_PSYC_StateRequest *
+GNUNET_PSYC_channel_state_get (struct GNUNET_PSYC_Channel *chn,
const char *full_name,
- GNUNET_PSYC_StateCallback cb,
- void *cb_cls)
+ GNUNET_PSYC_StateVarCallback var_cb,
+ GNUNET_ResultCallback result_cb,
+ void *cls)
{
- return NULL;
+ return channel_state_get (chn, GNUNET_MESSAGE_TYPE_PSYC_STATE_GET,
+ full_name, var_cb, result_cb, cls);
+
}
* The @a state_cb is invoked on all matching state variables asynchronously, as
* the state is stored in and retrieved from the PSYCstore,
*
- * @param channel Channel handle.
- * @param name_prefix Prefix of the state variable name to match.
- * @param cb Function to call with the matching state variables.
- * @param cb_cls Closure for the callbacks.
- * @return Handle that can be used to cancel the query operation.
+ * @param channel
+ * Channel handle.
+ * @param name_prefix
+ * Prefix of the state variable name to match.
+ * @param var_cb
+ * Function called once when a matching state variable is found.
+ * Not called if there's no matching state variable.
+ * @param result_cb
+ * Function called after the operation finished.
+ * (i.e. all state variables have been returned via @a state_cb)
+ * @param cls
+ * Closure for the callbacks.
*/
-struct GNUNET_PSYC_StateQuery *
-GNUNET_PSYC_channel_state_get_prefix (struct GNUNET_PSYC_Channel *channel,
+struct GNUNET_PSYC_StateRequest *
+GNUNET_PSYC_channel_state_get_prefix (struct GNUNET_PSYC_Channel *chn,
const char *name_prefix,
- GNUNET_PSYC_StateCallback cb,
- void *cb_cls)
+ GNUNET_PSYC_StateVarCallback var_cb,
+ GNUNET_ResultCallback result_cb,
+ void *cls)
{
- return NULL;
+ return channel_state_get (chn, GNUNET_MESSAGE_TYPE_PSYC_STATE_GET_PREFIX,
+ name_prefix, var_cb, result_cb, cls);
}
/**
- * Cancel a state query operation.
+ * Cancel a state request operation.
*
- * @param query Handle for the operation to cancel.
+ * @param sr
+ * Handle for the operation to cancel.
*/
void
-GNUNET_PSYC_channel_state_get_cancel (struct GNUNET_PSYC_StateQuery *query)
+GNUNET_PSYC_channel_state_get_cancel (struct GNUNET_PSYC_StateRequest *sr)
{
-
+ GNUNET_OP_remove (sr->chn->op, sr->op_id);
+ GNUNET_free (sr);
}
-
/* end of psyc_api.c */
projects / oweals / gnunet.git / blobdiff