/*
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
#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.
enum GNUNET_PSYC_MessageFlags
{
+ /**
+ * Default / no flags.
+ */
+ GNUNET_PSYC_MESSAGE_DEFAULT = 0,
+
/**
* Historic message, retrieved from PSYCstore.
*/
/**
* Status code for the operation.
*/
- int32_t result_code GNUNET_PACKED;
+ uint32_t result_code GNUNET_PACKED;
/**
* Last message ID sent to the channel.
*/
- uint64_t max_message_id;
+ uint64_t max_message_id GNUNET_PACKED;
};
/**
- * Function called after the channel master started.
+ * Function called after connected to the PSYC service
+ * and the channel master started.
*
- * @param cls Closure.
- * @param max_message_id Last message ID sent to the channel.
+ * Also called when reconnected to the service
+ * after the connection closed unexpectedly.
+ *
+ * @param cls
+ * Closure.
+ * @param result
+ * #GNUNET_YES if there were already messages sent to the channel,
+ * #GNUNET_NO if the message history is empty,
+ * #GNUNET_SYSERR on error.
+ * @param max_message_id
+ * Last message ID sent to the channel.
*/
typedef void
-(*GNUNET_PSYC_MasterStartCallback) (void *cls, uint64_t max_message_id);
+(*GNUNET_PSYC_MasterStartCallback) (void *cls, int result,
+ uint64_t max_message_id);
/**
/**
* Function called after the slave connected to the PSYC service.
*
- * @param cls Closure.
- * @param max_message_id Last message ID sent to the channel.
+ * Also called when reconnected to the service
+ * after the connection closed unexpectedly.
+ *
+ * @param cls
+ * Closure.
+ * @param result
+ * #GNUNET_YES if there were already messages sent to the channel,
+ * #GNUNET_NO if the message history is empty,
+ * #GNUNET_SYSERR on error.
+ * @param max_message_id
+ * Last message ID sent to the channel.
*/
typedef void
-(*GNUNET_PSYC_SlaveConnectCallback) (void *cls, uint64_t max_message_id);
+(*GNUNET_PSYC_SlaveConnectCallback) (void *cls, int result,
+ uint64_t max_message_id);
/**
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.
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);
+ uint64_t effective_since,
+ GNUNET_PSYC_ResultCallback result_cb,
+ void *cls);
/**
GNUNET_PSYC_channel_slave_remove (struct GNUNET_PSYC_Channel *channel,
const struct GNUNET_CRYPTO_EcdsaPublicKey
*slave_key,
- uint64_t announced_at);
+ uint64_t announced_at,
+ GNUNET_PSYC_ResultCallback result_cb,
+ void *cls);
/**
* @param value_size Number of bytes in @a value.
*/
typedef void
-(*GNUNET_PSYC_StateCallback) (void *cls,
- const char *name,
- const void *value,
- size_t value_size);
+(*GNUNET_PSYC_StateVarCallback) (void *cls,
+ const char *name,
+ const void *value,
+ size_t value_size);
/**
- * Function called when a requested operation has finished.
- *
- * @param cls Closure.
- */
-typedef void
-(*GNUNET_PSYC_FinishCallback) (void *cls);
-
-
-/**
- * Handle to a story telling operation.
- */
-struct GNUNET_PSYC_Story;
-
-
-/**
- * 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.
*
- * To get the latest message, use 0 for both the start and end message ID.
+ * @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 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 cls
+ * Closure for the callbacks.
*
- * @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 message_cb Function to invoke on message parts 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.
+ * @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_MessageCallback message_cb,
- GNUNET_PSYC_MessagePartCallback message_part_cb,
- GNUNET_PSYC_FinishCallback finish_cb,
- void *cls);
+void
+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,
+ void *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 story Story telling operation to stop.
+ * @param channel
+ * Which channel should be replayed?
+ * @param message_limit
+ * Maximum number of messages to replay.
+ * @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 cls
+ * Closure for the callbacks.
+ *
+ * @return Handle to cancel history replay operation.
*/
void
-GNUNET_PSYC_channel_story_tell_cancel (struct GNUNET_PSYC_Story *story);
-
-
-/**
- * Handle for a state query operation.
- */
-struct GNUNET_PSYC_StateQuery;
+GNUNET_PSYC_channel_history_replay_latest (struct GNUNET_PSYC_Channel *channel,
+ uint64_t message_limit,
+ GNUNET_PSYC_ResultCallback finish_cb,
+ void *cls);
/**
* 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 *
+void
GNUNET_PSYC_channel_state_get (struct GNUNET_PSYC_Channel *channel,
const char *full_name,
- GNUNET_PSYC_StateCallback cb,
- void *cb_cls);
+ GNUNET_PSYC_StateVarCallback var_cb,
+ GNUNET_PSYC_ResultCallback result_cb,
+ void *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 *
+void
GNUNET_PSYC_channel_state_get_prefix (struct GNUNET_PSYC_Channel *channel,
const char *name_prefix,
- GNUNET_PSYC_StateCallback cb,
- void *cb_cls);
-
-
-/**
- * Cancel a state query operation.
- *
- * @param query Handle for the operation to cancel.
- */
-void
-GNUNET_PSYC_channel_state_get_cancel (struct GNUNET_PSYC_StateQuery *query);
+ GNUNET_PSYC_StateVarCallback var_cb,
+ GNUNET_PSYC_ResultCallback result_cb,
+ void *cls);
#if 0 /* keep Emacsens' auto-indent happy */
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