/*
This file is part of GNUnet.
- Copyright (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
A client first establishes an _application connection_ to the service using
GNUNET_SOCIAL_app_connect() providing its _application ID_, then receives the
-public keys of subscribed places and available egos and in response.
+public keys of subscribed places and available egos in response.
## Reconnecting to places
To permanently leave a place, see GNUNET_SOCIAL_host_leave() and GNUNET_SOCIAL_guest_leave().
When leaving a place its network connections are closed and all applications are unsubscribed from the place.
-# Methods
+# Message methods
-## _message
+## _converse
-A message sent to the place.
+Human conversation in a private or public place.
### Environment
-#### _id_reply_to
-message ID this message is in reply to.
+#### _id_reply
+Message ID this message is in reply to.
#### _id_thread
+Thread ID, the first message ID in the thread.
-thread ID, the first message ID in the thread.
+#### _nym_author
+Nym of the author.
-#### _nym_author__
-nym of the author.
+FIXME: Are nyms a different data type from egos and person entities?
+Do they have a different format than any other entity address?
+Questions and thoughts on how to fix this in "questions.org"
#### _sig_author
-signature of the message body and its variables by the author.
+Signature of the message body and its variables by the author.
-## Data
+### Data
Message body.
##### _gns_place
GNS name of the place in a globally unique .zkey zone
+FIXME: A custom _gns PSYC data type should be avoidable by parsing
+and interpreting PSYC uniforms appropriately.
+Thoughts on this in "questions.org"
+
#### Without GNS
##### _key_pub_place
-public key of place
+Public key of place
+
+FIXME: _key_pub can't be the data type for GNUnet-specific cryptographic
+addressing. Questions and thoughts on how to fix this in "questions.org"
##### _peer_origin
-peer ID of origin
+Peer ID of origin
##### _list_peer_relays
-list of peer IDs of relays
+List of peer IDs of relays
## _notice_place_file
The environment of _notice_place above, plus the following:
#### _size_file
-size of file
+Size of file
-#### _mime_file
+#### _type_file
MIME type of file
#### _name_file
-name of file
+Name of file
#### _description_file
-description of file
+Description of file
## _file
Messages with a _file method contain a file,
-which is saved to disk upon receipt at the following location:
-$GNUNET_DATA_HOME/social/files/<H(place_pub)>/<message_id>
+which is saved to disk upon reception at the following location:
+$GNUNET_DATA_HOME/social/files/<H(place_pub)>/<H(message_id)>
### Environment
#### _size_file
-size of file
+Size of file
-#### _mime_file
+#### _type_file
MIME type of file
#### _name_file
-name of file
+Name of file
#### _description_file
-description
+Description of file
@{
*/
#include <stdint.h>
#include "gnunet_util_lib.h"
-#include "gnunet_env_lib.h"
+#include "gnunet_psyc_util_lib.h"
#include "gnunet_identity_service.h"
#include "gnunet_namestore_service.h"
#include "gnunet_psyc_service.h"
*/
#define GNUNET_SOCIAL_APP_MAX_ID_SIZE 256
+enum GNUNET_SOCIAL_MsgProcFlags {
+ GNUNET_SOCIAL_MSG_PROC_NONE = 0,
+ GNUNET_SOCIAL_MSG_PROC_RELAY = 1,
+ GNUNET_SOCIAL_MSG_PROC_SAVE= 2,
+};
+
/**
* Handle for an application.
*/
*/
struct GNUNET_SOCIAL_Guest;
-/**
- * Handle to an implementation of try-and-slice.
- */
-struct GNUNET_SOCIAL_Slicer;
-
-
-
-
/**
* Handle that can be used to reconnect to a place as host.
*/
/**
- * Entry status of a place.
+ * Entry status of a place per application.
*/
-enum GNUNET_SOCIAL_PlaceState
+enum GNUNET_SOCIAL_AppPlaceState
{
/**
- * Place was once entered but left since.
+ * The place was once entered by the ego, but left since.
+ * It's possible to establish a local connection to the place
+ * without re-entering to fetch history from the PSYCstore.
+ * @see enum GNUNET_PSYC_SlaveJoinFlags and GNUNET_SOCIAL_guest_enter()
*/
GNUNET_SOCIAL_PLACE_STATE_ARCHIVED = 0,
+
/**
- * Place is entered but not subscribed.
+ * The place is entered by the ego,
+ * but this application is not subscribed to it.
*/
GNUNET_SOCIAL_PLACE_STATE_ENTERED = 1,
+
/**
- * Place is entered and subscribed.
+ * The place is entered by the ego and
+ * and this application is subscribed to it.
*/
GNUNET_SOCIAL_PLACE_STATE_SUBSCRIBED = 2,
};
+/**
+ * Called after receiving initial list of egos and places.
+ */
+typedef void
+(*GNUNET_SOCIAL_AppConnectedCallback) (void *cls);
+
+
/**
* Notification about a home.
*
* @param place_pub_key
* Public key of the place.
* @param place_state
- * @see enum GNUNET_SOCIAL_PlaceState
+ * @see enum GNUNET_SOCIAL_AppPlaceState
*/
typedef void
(*GNUNET_SOCIAL_AppHostPlaceCallback) (void *cls,
struct GNUNET_SOCIAL_HostConnection *hconn,
struct GNUNET_SOCIAL_Ego *ego,
const struct GNUNET_CRYPTO_EddsaPublicKey *place_pub_key,
- enum GNUNET_SOCIAL_PlaceState place_state);
+ enum GNUNET_SOCIAL_AppPlaceState place_state);
/**
* Notification about a place.
* @param place_pub_key
* Public key of the place.
* @param place_state
- * @see enum GNUNET_SOCIAL_PlaceState
+ * @see enum GNUNET_SOCIAL_AppPlaceState
*/
typedef void
(*GNUNET_SOCIAL_AppGuestPlaceCallback) (void *cls,
struct GNUNET_SOCIAL_GuestConnection *gconn,
struct GNUNET_SOCIAL_Ego *ego,
const struct GNUNET_CRYPTO_EddsaPublicKey *place_pub_key,
- enum GNUNET_SOCIAL_PlaceState place_state);
+ enum GNUNET_SOCIAL_AppPlaceState place_state);
/**
* Establish application connection to the social service.
*
- * The @host_place_cb and @guest_place_cb functions are
+ * The @host_cb and @guest_cb functions are
* initially called for each entered places,
* then later each time a new place is entered with the current app ID.
*
GNUNET_SOCIAL_AppEgoCallback ego_cb,
GNUNET_SOCIAL_AppHostPlaceCallback host_cb,
GNUNET_SOCIAL_AppGuestPlaceCallback guest_cb,
+ GNUNET_SOCIAL_AppConnectedCallback connected_cb,
void *cls);
/**
* Disconnect app.
*
- * @param c
- * App handle.
+ * @param app
+ * Application handle.
+ * @param disconnect_cb
+ * Disconnect callback.
+ * @param disconnect_cls
+ * Disconnect closure.
*/
void
-GNUNET_SOCIAL_app_disconnect (struct GNUNET_SOCIAL_App *app);
+GNUNET_SOCIAL_app_disconnect (struct GNUNET_SOCIAL_App *app,
+ GNUNET_ContinuationCallback disconnect_cb,
+ void *disconnect_cls);
/**
GNUNET_SOCIAL_nym_get_pub_key_hash (const struct GNUNET_SOCIAL_Nym *nym);
-/**
- * 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);
-
-
/**
* Function called asking for nym to be admitted to the place.
*
* reference remains valid until the #GNUNET_SOCIAL_FarewellCallback is invoked
* for it.
*
- * @param cls Closure.
- * @param nym Handle for the user who wants to enter.
- * @param method_name Method name in the entry request.
- * @param variable_count Number of elements in the @a variables array.
- * @param variables Variables present in the message.
- * @param data_size Number of bytes in @a data.
- * @param data Payload given on enter (e.g. a password).
+ * @param cls
+ * Closure.
+ * @param nym
+ * Handle for the user who wants to enter.
+ * @param method_name
+ * Method name in the entry request.
+ * @param variable_count
+ * Number of elements in the @a variables array.
+ * @param variables
+ * Variables present in the message.
+ * @param data
+ * Payload given on enter (e.g. a password).
+ * @param data_size
+ * Number of bytes in @a data.
*/
typedef void
(*GNUNET_SOCIAL_AnswerDoorCallback) (void *cls,
struct GNUNET_SOCIAL_Nym *nym,
const char *method_name,
- struct GNUNET_ENV_Environment *env,
- size_t data_size,
- const void *data);
+ struct GNUNET_PSYC_Environment *env,
+ const void *data,
+ size_t data_size);
/**
typedef void
(*GNUNET_SOCIAL_FarewellCallback) (void *cls,
const struct GNUNET_SOCIAL_Nym *nym,
- struct GNUNET_ENV_Environment *env);
+ struct GNUNET_PSYC_Environment *env);
/**
GNUNET_SOCIAL_host_enter (const struct GNUNET_SOCIAL_App *app,
const struct GNUNET_SOCIAL_Ego *ego,
enum GNUNET_PSYC_Policy policy,
- struct GNUNET_SOCIAL_Slicer *slicer,
+ struct GNUNET_PSYC_Slicer *slicer,
GNUNET_SOCIAL_HostEnterCallback enter_cb,
GNUNET_SOCIAL_AnswerDoorCallback answer_door_cb,
GNUNET_SOCIAL_FarewellCallback farewell_cb,
*/
struct GNUNET_SOCIAL_Host *
GNUNET_SOCIAL_host_enter_reconnect (struct GNUNET_SOCIAL_HostConnection *hconn,
- struct GNUNET_SOCIAL_Slicer *slicer,
+ struct GNUNET_PSYC_Slicer *slicer,
GNUNET_SOCIAL_HostEnterCallback enter_cb,
GNUNET_SOCIAL_AnswerDoorCallback answer_door_cb,
GNUNET_SOCIAL_FarewellCallback farewell_cb,
* #GNUNET_YES if @a nym is admitted,
* #GNUNET_NO if @a nym is refused entry,
* #GNUNET_SYSERR if we cannot answer the request.
- * @param method_name
- * Method name for the rejection message.
- * @param env
- * Environment containing variables for the message, or NULL.
- * @param data
- * Data for the rejection message to send back.
- * @param data_size
- * Number of bytes in @a data for method.
+ * @param entry_resp
+ * Entry response message, or NULL.
* @return #GNUNET_OK on success,
* #GNUNET_SYSERR if the message is too large.
*/
void
GNUNET_SOCIAL_host_eject (struct GNUNET_SOCIAL_Host *host,
const struct GNUNET_SOCIAL_Nym *nym,
- struct GNUNET_ENV_Environment *env);
+ struct GNUNET_PSYC_Environment *env);
/**
struct GNUNET_SOCIAL_Announcement *
GNUNET_SOCIAL_host_announce (struct GNUNET_SOCIAL_Host *host,
const char *method_name,
- const struct GNUNET_ENV_Environment *env,
+ const struct GNUNET_PSYC_Environment *env,
GNUNET_PSYC_TransmitNotifyData notify_data,
void *notify_data_cls,
enum GNUNET_SOCIAL_AnnounceFlags flags);
/**
* Stop hosting a home.
*
- * Sends a _notice_place_closed announcement to the home.
+ * Sends a _notice_place_closing announcement to the home.
* Invalidates host handle.
*
* @param hst
*/
void
GNUNET_SOCIAL_host_leave (struct GNUNET_SOCIAL_Host *hst,
- const struct GNUNET_ENV_Environment *env,
+ const struct GNUNET_PSYC_Environment *env,
GNUNET_ContinuationCallback disconnect_cb,
void *cls);
* #GNUNET_OK on success, or
* #GNUNET_SYSERR on error, e.g. could not connect to the service, or
* could not resolve GNS name.
+ * @param place_pub_key
+ * Public key of place.
* @param max_message_id
* Last message ID sent to the place.
* Or 0 if no messages have been sent to the place yet.
*/
typedef void
(*GNUNET_SOCIAL_GuestEnterCallback) (void *cls, int result,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *place_pub_key,
uint64_t max_message_id);
* Function called upon a guest receives a decision about entry to the place.
*
* @param is_admitted
- * Is the guest admitted to the place?
- * #GNUNET_YES if admitted,
- * #GNUNET_NO if refused entry
- * #GNUNET_SYSERR if the request could not be answered.
- * @param method_name
- * Method for the message sent along with the decision.
- * NULL if no message was sent.
- * @param env
- * Environment with variables for the message.
- * NULL if there are no variables.
- * It has to be freed using GNUNET_ENV_environment_destroy()
- * when it is not needed anymore.
- * @param data_size
- * Size of @data.
+ * Is the guest admitted to the place?
+ * #GNUNET_YES if admitted,
+ * #GNUNET_NO if refused entry,
+ * #GNUNET_SYSERR if the request could not be answered.
* @param data
- * Payload of the message.
+ * Entry response message.
*/
typedef void
(*GNUNET_SOCIAL_EntryDecisionCallback) (void *cls,
* Number of elements in the @a relays array.
* @param relays
* Relays for the underlying multicast group.
- * @param method_name
- * Method name for the message.
- * @param env
- * Environment containing variables for the message, or NULL.
- * @param data
- * Payload for the message to give to the enter callback.
- * @param data_size
- * Number of bytes in @a data.
+ * @param entry_msg
+ * Entry message.
* @param slicer
* Slicer to use for processing incoming requests from guests.
*
uint32_t relay_count,
const struct GNUNET_PeerIdentity *relays,
const struct GNUNET_PSYC_Message *entry_msg,
- struct GNUNET_SOCIAL_Slicer *slicer,
+ struct GNUNET_PSYC_Slicer *slicer,
GNUNET_SOCIAL_GuestEnterCallback local_enter_cb,
GNUNET_SOCIAL_EntryDecisionCallback entry_dcsn_cb,
void *cls);
const char *gns_name,
const char *password,
const struct GNUNET_PSYC_Message *join_msg,
- struct GNUNET_SOCIAL_Slicer *slicer,
+ struct GNUNET_PSYC_Slicer *slicer,
GNUNET_SOCIAL_GuestEnterCallback local_enter_cb,
GNUNET_SOCIAL_EntryDecisionCallback entry_decision_cb,
void *cls);
struct GNUNET_SOCIAL_Guest *
GNUNET_SOCIAL_guest_enter_reconnect (struct GNUNET_SOCIAL_GuestConnection *gconn,
enum GNUNET_PSYC_SlaveJoinFlags flags,
- struct GNUNET_SOCIAL_Slicer *slicer,
+ struct GNUNET_PSYC_Slicer *slicer,
GNUNET_SOCIAL_GuestEnterCallback local_enter_cb,
void *cls);
struct GNUNET_SOCIAL_TalkRequest *
GNUNET_SOCIAL_guest_talk (struct GNUNET_SOCIAL_Guest *guest,
const char *method_name,
- const struct GNUNET_ENV_Environment *env,
+ const struct GNUNET_PSYC_Environment *env,
GNUNET_PSYC_TransmitNotifyData notify_data,
void *notify_data_cls,
enum GNUNET_SOCIAL_TalkFlags flags);
*/
void
GNUNET_SOCIAL_guest_leave (struct GNUNET_SOCIAL_Guest *gst,
- struct GNUNET_ENV_Environment *env,
+ struct GNUNET_PSYC_Environment *env,
GNUNET_ContinuationCallback disconnect_cb,
void *leave_cls);
struct GNUNET_SOCIAL_HistoryRequest;
+/**
+ * Get the public key of a place.
+ *
+ * @param plc
+ * Place.
+ *
+ * @return Public key of the place.
+ */
+const struct GNUNET_CRYPTO_EddsaPublicKey *
+GNUNET_SOCIAL_place_get_pub_key (const struct GNUNET_SOCIAL_Place *plc);
+
+
+/**
+ * Set message processing @a flags for a @a method_prefix.
+ *
+ * @param plc
+ * Place.
+ * @param method_prefix
+ * Method prefix @a flags apply to.
+ * @param flags
+ * The flags that apply to a matching @a method_prefix.
+ */
+void
+GNUNET_SOCIAL_place_msg_proc_set (struct GNUNET_SOCIAL_Place *plc,
+ const char *method_prefix,
+ enum GNUNET_SOCIAL_MsgProcFlags flags);
+
+/**
+ * Clear all message processing flags previously set for this place.
+ */
+void
+GNUNET_SOCIAL_place_msg_proc_clear (struct GNUNET_SOCIAL_Place *plc);
+
+
/**
* Learn about the history of a place.
*
uint64_t end_message_id,
const char *method_prefix,
uint32_t flags,
- struct GNUNET_SOCIAL_Slicer *slicer,
+ struct GNUNET_PSYC_Slicer *slicer,
GNUNET_ResultCallback result_cb,
void *cls);
uint64_t message_limit,
const char *method_prefix,
uint32_t flags,
- struct GNUNET_SOCIAL_Slicer *slicer,
+ struct GNUNET_PSYC_Slicer *slicer,
GNUNET_ResultCallback result_cb,
void *cls);
* The place to look the object at.
* @param full_name
* Full name of the object.
- * @param value_size
- * Set to the size of the returned value.
*
* @return NULL if there is no such object at this place.
*/
GNUNET_ResultCallback result_cb,
void *result_cls);
-/** @} */ /* end of group social */
#if 0 /* keep Emacsens' auto-indent happy */
{
/* ifndef GNUNET_SOCIAL_SERVICE_H */
#endif
-/* end of gnunet_social_service.h */
+
+/** @} */ /* end of group */