-/**
- * Function called upon receiving a message indicating a call to a @e method.
- *
- * This function is called one or more times for each message until all data
- * fragments arrive from the network.
- *
- * @param cls
- * Closure.
- * @param msg
- * Message part, as it arrived from the network.
- * @param message_id
- * Message counter, monotonically increasing from 1.
- * @param nym
- * The sender of the message.
- * Can be NULL if the message is not connected to a pseudonym.
- * @param flags
- * OR'ed GNUNET_PSYC_MessageFlags
- * @param method_name
- * Original method name from PSYC.
- * May be more specific than the registered method name due to
- * try-and-slice matching.
- */
-typedef void
-(*GNUNET_SOCIAL_MethodCallback) (void *cls,
- const struct GNUNET_PSYC_MessageMethod *msg,
- uint64_t message_id,
- uint32_t flags,
- const struct GNUNET_SOCIAL_Nym *nym,
- const char *method_name);
-
-
-/**
- * Function called upon receiving a modifier of a message.
- *
- * @param cls
- * Closure.
- * @param message_id
- * Message ID this data fragment belongs to.
- * @param msg
- * Message part, as it arrived from the network.
- * @param oper
- * Operation to perform.
- * 0 in case of a modifier continuation.
- * @param name
- * Name of the modifier.
- * NULL in case of a modifier continuation.
- * @param value
- * Value of the modifier.
- * @param value_size
- * Size of @value.
- */
-typedef void
-(*GNUNET_SOCIAL_ModifierCallback) (void *cls,
- const struct GNUNET_MessageHeader *msg,
- uint64_t message_id,
- enum GNUNET_ENV_Operator oper,
- const char *name,
- const void *value,
- uint16_t value_size,
- uint16_t full_value_size);
-
-
-/**
- * Function called upon receiving a data fragment of a message.
- *
- * @param cls
- * Closure.
- * @param message_id
- * Message ID this data fragment belongs to.
- * @param msg
- * Message part, as it arrived from the network.
- * @param data_offset
- * Byte offset of @a data in the overall data of the method.
- * @param data_size
- * Number of bytes in @a data.
- * @param data
- * Data stream given to the method.
- * @param end
- * End of message?
- * #GNUNET_NO if there are further fragments,
- * #GNUNET_YES if this is the last fragment,
- * #GNUNET_SYSERR indicates the message was cancelled by the sender.
- */
-typedef void
-(*GNUNET_SOCIAL_DataCallback) (void *cls,
- const struct GNUNET_MessageHeader *msg,
- uint64_t message_id,
- uint64_t data_offset,
- const void *data,
- uint16_t data_size);
-
-
-/**
- * End of message.
- *
- * @param cls
- * Closure.
- * @param msg
- * Message part, as it arrived from the network.
- * @param message_id
- * Message ID this data fragment belongs to.
- * @param cancelled
- * #GNUNET_YES if the message was cancelled,
- * #GNUNET_NO if the message is complete.
- */
-typedef void
-(*GNUNET_SOCIAL_EndOfMessageCallback) (void *cls,
- const struct GNUNET_MessageHeader *msg,
- uint64_t message_id,
- uint8_t cancelled);
-
-
-/**
- * Create a try-and-slice instance.
- *
- * A slicer processes incoming messages and notifies callbacks about matching
- * methods or modifiers encountered.
- *
- * @return A new try-and-slice construct.
- */
-struct GNUNET_SOCIAL_Slicer *
-GNUNET_SOCIAL_slicer_create (void);
-
-
-/**
- * Add a method to the try-and-slice instance.
- *
- * The callbacks are called for messages with a matching @a method_name prefix.
- *
- * @param slicer
- * The try-and-slice instance to extend.
- * @param method_name
- * Name of the given method, use empty string to match all.
- * @param method_cb
- * Method handler invoked upon a matching message.
- * @param modifier_cb
- * Modifier handler, invoked after @a method_cb
- * for each modifier in the message.
- * @param data_cb
- * Data handler, invoked after @a modifier_cb for each data fragment.
- * @param eom_cb
- * Invoked upon reaching the end of a matching message.
- * @param cls
- * Closure for the callbacks.
- */
-void
-GNUNET_SOCIAL_slicer_method_add (struct GNUNET_SOCIAL_Slicer *slicer,
- const char *method_name,
- GNUNET_SOCIAL_MethodCallback method_cb,
- GNUNET_SOCIAL_ModifierCallback modifier_cb,
- GNUNET_SOCIAL_DataCallback data_cb,
- GNUNET_SOCIAL_EndOfMessageCallback eom_cb,
- void *cls);
-
-/**
- * Remove a registered method from the try-and-slice instance.
- *
- * Removes one matching handler registered with the given
- * @a method_name and callbacks.
- *
- * @param slicer
- * The try-and-slice instance.
- * @param method_name
- * Name of the method to remove.
- * @param method_cb
- * Method handler.
- * @param modifier_cb
- * Modifier handler.
- * @param data_cb
- * Data handler.
- * @param eom_cb
- * End of message handler.
- *
- * @return #GNUNET_OK if a method handler was removed,
- * #GNUNET_NO if no handler matched the given method name and callbacks.
- */
-int
-GNUNET_SOCIAL_slicer_method_remove (struct GNUNET_SOCIAL_Slicer *slicer,
- const char *method_name,
- GNUNET_SOCIAL_MethodCallback method_cb,
- GNUNET_SOCIAL_ModifierCallback modifier_cb,
- GNUNET_SOCIAL_DataCallback data_cb,
- GNUNET_SOCIAL_EndOfMessageCallback eom_cb);
-
-
-/**
- * Watch a place for changed objects.
- *
- * @param slicer
- * The try-and-slice instance.
- * @param object_filter
- * Object prefix to match.
- * @param modifier_cb
- * Function to call when encountering a state modifier.
- * @param cls
- * Closure for callback.
- */
-void
-GNUNET_SOCIAL_slicer_modifier_add (struct GNUNET_SOCIAL_Slicer *slicer,
- const char *object_filter,
- GNUNET_SOCIAL_ModifierCallback modifier_cb,
- void *cls);
-
-
-/**
- * Remove a registered modifier from the try-and-slice instance.
- *
- * Removes one matching handler registered with the given
- * @a object_filter and callback.
- *
- * @param slicer
- * The try-and-slice instance.
- * @param object_filter
- * Object prefix to match.
- * @param modifier_cb
- * Function to call when encountering a state modifier changes.
- */
-int
-GNUNET_SOCIAL_slicer_modifier_remove (struct GNUNET_SOCIAL_Slicer *slicer,
- const char *object_filter,
- GNUNET_SOCIAL_ModifierCallback modifier_cb);
-
-
-/**
- * Destroy a given try-and-slice instance.
- *
- * @param slicer
- * Slicer to destroy
- */
-void
-GNUNET_SOCIAL_slicer_destroy (struct GNUNET_SOCIAL_Slicer *slicer);
-
-