/*
This file is part of GNUnet.
- (C) 2012, 2013 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2012, 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
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.
*/
/**
#include "gnunet_util_lib.h"
#include "gnunet_env_lib.h"
#include "gnunet_multicast_service.h"
-
+//Mingw work around
+#ifdef MINGW
+ # ifndef UINT64_MAX
+ # define UINT64_MAX 0xffffffffffffffffULL
+ # endif
+#endif
/**
* Version number of GNUnet-PSYC API.
/**
* Header of a PSYC message.
*
- * Only present when receiving a message.
+ * The PSYC service adds this when delivering the message to local clients,
+ * not present on the multicast layer.
*/
struct GNUNET_PSYC_MessageHeader
{
/* Followed by struct GNUNET_MessageHeader join_response */
};
+
+enum GNUNET_PSYC_HistoryReplayFlags
+{
+ /**
+ * Replay locally available messages.
+ */
+ GNUNET_PSYC_HISTORY_REPLAY_LOCAL = 0,
+
+ /**
+ * Replay messages from remote peers if not found locally.
+ */
+ GNUNET_PSYC_HISTORY_REPLAY_REMOTE = 1,
+};
+
+
+struct GNUNET_PSYC_HistoryRequestMessage
+{
+ /**
+ * Type: GNUNET_MESSAGE_TYPE_PSYC_CHANNEL_HISTORY_REPLAY
+ */
+ struct GNUNET_MessageHeader header;
+
+ /**
+ * @see enum GNUNET_PSYC_HistoryReplayFlags
+ */
+ uint32_t flags GNUNET_PACKED;
+
+ /**
+ * ID for this operation.
+ */
+ uint64_t op_id GNUNET_PACKED;
+
+ uint64_t start_message_id GNUNET_PACKED;
+
+ uint64_t end_message_id GNUNET_PACKED;
+
+ uint64_t message_limit GNUNET_PACKED;
+
+ /* Followed by NUL-terminated method name prefix. */
+};
+
+
+struct GNUNET_PSYC_StateRequestMessage
+{
+ /**
+ * Types:
+ * - GNUNET_MESSAGE_TYPE_PSYC_CHANNEL_STATE_GET
+ * - GNUNET_MESSAGE_TYPE_PSYC_CHANNEL_STATE_GET_PREFIX
+ */
+ struct GNUNET_MessageHeader header;
+
+ uint32_t reserved GNUNET_PACKED;
+
+ /**
+ * ID for this operation.
+ */
+ uint64_t op_id GNUNET_PACKED;
+
+ /* Followed by NUL-terminated name. */
+};
+
+
+/**** service -> library ****/
+
+
+/**
+ * Answer from service to client about last operation.
+ */
+struct GNUNET_PSYC_OperationResultMessage
+{
+ /**
+ * Types:
+ * - GNUNET_MESSAGE_TYPE_PSYC_RESULT_CODE
+ * - GNUNET_MESSAGE_TYPE_PSYC_CHANNEL_STATE_RESULT
+ */
+ struct GNUNET_MessageHeader header;
+
+ uint32_t reserved GNUNET_PACKED;
+
+ /**
+ * Operation ID.
+ */
+ uint64_t op_id GNUNET_PACKED;
+
+ /**
+ * Status code for the operation.
+ */
+ uint64_t result_code GNUNET_PACKED;
+
+ /* Followed by:
+ * - on error: NUL-terminated error message
+ * - on success: one of the following message types
+ *
+ * For a STATE_RESULT, one of:
+ * - GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_MODIFIER
+ * - GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_MOD_CONT
+ * - GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_END
+ */
+};
+
GNUNET_NETWORK_STRUCT_END
/**
* Method called from PSYC upon receiving part of a message.
*
- * @param cls Closure.
- * @param message_id Sequence number of the message.
- * @param data_offset Byte offset of data, only set if @a msg has a type
- * #GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_DATA
- * @param flags OR'ed GNUNET_PSYC_MessageFlags
+ * @param cls
+ * Closure.
+ * @param slave_key
+ * Public key of the slave sending the message.
+ * Only set for channel master.
+ * @param message_id
+ * Sequence number of the message.
+ * @param flags
+ * OR'ed GNUNET_PSYC_MessageFlags
+ * @param data_offset
+ * Byte offset of data, only set if @a msg has a type
+ * #GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_DATA
* @param msg Message part, one of the following types:
* - #GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_HEADER
* - #GNUNET_MESSAGE_TYPE_PSYC_MESSAGE_METHOD
*/
typedef void
(*GNUNET_PSYC_MessagePartCallback) (void *cls,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *slave_key,
uint64_t message_id,
- uint64_t data_offset,
uint32_t flags,
+ uint64_t data_offset,
const struct GNUNET_MessageHeader *msg);
/**
* Method called from PSYC upon receiving a join request.
*
- * @param cls Closure.
- * @param slave_key Public key of the slave requesting join.
- * @param join_msg Join message sent along with the request.
- * @param jh Join handle to use with GNUNET_PSYC_join_decision()
+ * @param cls
+ * Closure.
+ * @param slave_key
+ * Public key of the slave requesting join.
+ * @param join_msg
+ * Join message sent along with the request.
+ * @param jh
+ * Join handle to use with GNUNET_PSYC_join_decision()
*/
typedef void
(*GNUNET_PSYC_JoinRequestCallback) (void *cls,
struct GNUNET_PSYC_Channel;
-/**
- * Function called with the result of an asynchronous operation.
- *
- * @param cls
- * Closure.
- * @param result
- * Result of the operation.
- * Usually one of #GNUNET_OK, #GNUNET_YES, #GNUNET_NO, or #GNUNET_SYSERR.
- * @param err_msg
- * Error message.
- */
-typedef void
-(*GNUNET_PSYC_ResultCallback) (void *cls,
- int64_t result,
- const char *err_msg);
-
-
/**
* Convert a channel @a master to a @e channel handle to access the @e channel
* APIs.
* 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 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 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_EcdsaPublicKey *slave_key,
uint64_t announced_at,
uint64_t effective_since,
- GNUNET_PSYC_ResultCallback result_cb,
+ GNUNET_ResultCallback result_cb,
void *cls);
* 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 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 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_EcdsaPublicKey
*slave_key,
uint64_t announced_at,
- GNUNET_PSYC_ResultCallback result_cb,
+ GNUNET_ResultCallback result_cb,
void *cls);
/**
- * Function called to inform a member about stored state values for a channel.
- *
- * @param cls Closure.
- * @param name Name of the state variable. A NULL value indicates that there
- * are no more state variables to be returned.
- * @param value Value of the state variable.
- * @param value_size Number of bytes in @a value.
+ * History request handle.
*/
-typedef void
-(*GNUNET_PSYC_StateVarCallback) (void *cls,
- const char *name,
- const void *value,
- size_t value_size);
+struct GNUNET_PSYC_HistoryRequest;
/**
* Earliest interesting point in history.
* @param end_message_id
* Last (inclusive) interesting point in history.
- * @param finish_cb
- * Function to call when the requested history has been fully replayed
- * (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)o once this function has been called, the
- * client must not call GNUNET_PSYC_channel_history_replay_cancel() anymore.
+ * @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.
+ * Once this function has been called, the client must not call
+ * GNUNET_PSYC_channel_history_replay_cancel() anymore.
* @param cls
* Closure for the callbacks.
*
* @return Handle to cancel history replay operation.
*/
-void
+struct GNUNET_PSYC_HistoryRequest *
GNUNET_PSYC_channel_history_replay (struct GNUNET_PSYC_Channel *channel,
uint64_t start_message_id,
uint64_t end_message_id,
- GNUNET_PSYC_ResultCallback finish_cb,
+ const char *method_prefix,
+ uint32_t flags,
+ GNUNET_PSYC_MessageCallback message_cb,
+ GNUNET_PSYC_MessagePartCallback message_part_cb,
+ GNUNET_ResultCallback result_cb,
void *cls);
* Which channel should be replayed?
* @param message_limit
* Maximum number of messages to replay.
+ * @param flags
+ * OR'ed enum GNUNET_PSYC_HistoryReplayFlags
* @param finish_cb
* Function to call when the requested history has been fully replayed
* (counting message IDs might not suffice, as some messages might be
*
* @return Handle to cancel history replay operation.
*/
-void
+struct GNUNET_PSYC_HistoryRequest *
GNUNET_PSYC_channel_history_replay_latest (struct GNUNET_PSYC_Channel *channel,
uint64_t message_limit,
- GNUNET_PSYC_ResultCallback finish_cb,
+ const char *method_prefix,
+ uint32_t flags,
+ GNUNET_PSYC_MessageCallback message_cb,
+ GNUNET_PSYC_MessagePartCallback message_part_cb,
+ GNUNET_ResultCallback result_cb,
void *cls);
+void
+GNUNET_PSYC_channel_history_replay_cancel (struct GNUNET_PSYC_Channel *channel,
+ struct GNUNET_PSYC_HistoryRequest *hr);
+
+
+/**
+ * Function called to inform a member about stored state values for a channel.
+ *
+ * If @a full_value_size > value_size then this function is called multiple
+ * times until the whole value arrived.
+ *
+ * @param cls
+ * Closure.
+ * @param name
+ * Name of the state variable.
+ * NULL if there are no more state variables to be returned.
+ * @param value
+ * Value of the state variable.
+ * @param value_size
+ * Number of bytes in @a value.
+ * @param full_value_size
+ * Number of bytes in the full value, including continuations.
+ * Only set for the first part of a variable,
+ * in case of a continuation it is 0.
+ */
+typedef void
+(*GNUNET_PSYC_StateVarCallback) (void *cls,
+ const struct GNUNET_MessageHeader *mod,
+ const char *name,
+ const void *value,
+ uint32_t value_size,
+ uint32_t full_value_size);
+
+
+/**
+ * State request handle.
+ */
+struct GNUNET_PSYC_StateRequest;
+
+
/**
* Retrieve the best matching channel state variable.
*
* @param cls
* Closure for the callbacks.
*/
-void
+struct GNUNET_PSYC_StateRequest *
GNUNET_PSYC_channel_state_get (struct GNUNET_PSYC_Channel *channel,
const char *full_name,
GNUNET_PSYC_StateVarCallback var_cb,
- GNUNET_PSYC_ResultCallback result_cb,
+ GNUNET_ResultCallback result_cb,
void *cls);
* @param cls
* Closure for the callbacks.
*/
-void
+struct GNUNET_PSYC_StateRequest *
GNUNET_PSYC_channel_state_get_prefix (struct GNUNET_PSYC_Channel *channel,
const char *name_prefix,
GNUNET_PSYC_StateVarCallback var_cb,
- GNUNET_PSYC_ResultCallback result_cb,
+ GNUNET_ResultCallback result_cb,
void *cls);
+/**
+ * Cancel a state request operation.
+ *
+ * @param sr
+ * Handle for the operation to cancel.
+ */
+void
+GNUNET_PSYC_channel_state_get_cancel (struct GNUNET_PSYC_StateRequest *sr);
+
+
#if 0 /* keep Emacsens' auto-indent happy */
{
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