/*
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
- by the Free Software Foundation; either version 3, or (at your
- option) any later version.
+ GNUnet is free software: you can redistribute it and/or modify it
+ under the terms of the GNU Affero General Public License as published
+ by the Free Software Foundation, either version 3 of the License,
+ or (at your option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- 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.
+ Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
- * @file include/gnunet_social_service.h
- * @brief Social service; implements social functionality using the PSYC service
- * @author tg
+ * @author Gabor X Toth
* @author Christian Grothoff
+ *
+ * @file
+ * Social service; implements social interactions through the PSYC service.
*/
+
+/** @defgroup social Social service
+Social interactions through the PSYC service.
+
+# Overview
+
+The social service provides an API for social interactions based on a one-to-many messaging model.
+It manages subscriptions of applications to places, provides messaging functionality in places,
+allows access to the local message history and manages the GNS zone of _egos_ (user identities).
+
+The service stores private and public keys of subscribed places, as well as files received in subscribed places.
+
+# Concepts and terminology
+
+## Ego, Nym
+
+An _ego_ is an identity of a user, a private-public key pair.
+A _nym_ is an identity of another user in the network, identified by its public key.
+Each user can have multiple identities.
+
+struct GNUNET_SOCIAL_Ego and struct GNUNET_SOCIAL_Nym represents one of these identities.
+
+## Place, Host, Guest
+
+A _place_ is where social interactions happen. It is owned and created by an _ego_.
+Creating a new place happens by an _ego_ entering a new place as a _host_,
+where _guests_ can enter later to receive messages sent to the place.
+
+A place is identified by its public key.
+
+- struct GNUNET_SOCIAL_Host represents a place entered as host,
+- struct GNUNET_SOCIAL_Guest is used for a place entered as guest.
+- A struct GNUNET_SOCIAL_Place can be obtained for both a host and guest place
+ using GNUNET_SOCIAL_host_get_place() and GNUNET_SOCIAL_guest_get_place()
+ and can be used with API functions common to hosts and guests.
+
+## History
+
+Messages sent to places are stored locally by the PSYCstore service, and can be queried any time.
+GNUNET_SOCIAL_history_replay_latest() retrieves the latest N messages sent to the place,
+while GNUNET_SOCIAL_history_replay() is used to query a given message ID range.
+
+## GNU Name System
+
+The GNU Name System is used for assigning human-readable names to nyms and places.
+There's a _GNS zone_ corresponding to each _nym_.
+An _ego_ can publish PKEY and PLACE records in its own zone, pointing to nyms and places, respectively.
+
+## Announcement, talk request
+
+The host can _announce_ messages to the place, using GNUNET_SOCIAL_host_announce().
+Guests can send _talk_ requests to the host, using GNUNET_SOCIAL_guest_talk().
+The host receives talk requests of guests and can _relay_ them to the place,
+or process it using a message handler function.
+
+# Using the API
+
+## Connecting to the service
+
+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 in response.
+
+## Reconnecting to places
+
+Then the application can reconnect to its subscribed places by establishing
+_place connections_ with GNUNET_SOCIAL_host_enter_reconnect() and
+GNUNET_SOCIAL_guest_enter_reconnect().
+
+## Subscribing to a place
+
+Entering and subscribing a new host or guest place is done using
+GNUNET_SOCIAL_host_enter() and GNUNET_SOCIAL_guest_enter().
+
+## Disconnecting from a place
+
+An application can disconnect from a place while the social service keeps its
+network connection active, using GNUNET_SOCIAL_host_disconnect() and
+GNUNET_SOCIAL_guest_disconnect().
+
+## Leaving a place
+
+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.
+
+# Message methods
+
+## _converse
+
+Human conversation in a private or public place.
+
+### Environment
+
+#### _id_reply
+Message ID this message is in reply to.
+
+#### _id_thread
+Thread ID, the first message ID in the thread.
+
+#### _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.
+
+### Data
+
+Message body.
+
+## _notice_place
+
+Notification about a place.
+
+TODO: Applications can decide to auto-subscribe to certain places,
+e.g. files under a given size.
+
+### Environment
+
+#### Using GNS
+
+##### _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
+
+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
+
+##### _list_peer_relays
+List of peer IDs of relays
+
+## _notice_place_file
+
+Notification about a place hosting a file.
+
+### Environment
+
+The environment of _notice_place above, plus the following:
+
+#### _size_file
+Size of file
+
+#### _type_file
+MIME type of file
+
+#### _name_file
+Name of file
+
+#### _description_file
+Description of file
+
+## _file
+
+Messages with a _file method contain a file,
+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
+
+#### _type_file
+MIME type of file
+
+#### _name_file
+Name of file
+
+#### _description_file
+Description of file
+
+@{
+*/
+
+
#ifndef GNUNET_SOCIAL_SERVICE_H
#define GNUNET_SOCIAL_SERVICE_H
#endif
#endif
+#include <stdint.h>
#include "gnunet_util_lib.h"
+#include "gnunet_psyc_util_lib.h"
+#include "gnunet_identity_service.h"
+#include "gnunet_namestore_service.h"
#include "gnunet_psyc_service.h"
-#include "gnunet_multicast_service.h"
/**
*/
#define GNUNET_SOCIAL_VERSION 0x00000000
-
/**
- * Handle for a place where social interactions happen.
+ * Maximum size of client ID including '\0' terminator.
*/
-struct GNUNET_SOCIAL_Place;
+#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 a place that one of our egos hosts.
+ * Handle for an application.
*/
-struct GNUNET_SOCIAL_Home;
+struct GNUNET_SOCIAL_App;
/**
- * Handle for our own presence in the network (we can of course have
- * alter-egos).
+ * Handle for an ego (own identity)
*/
struct GNUNET_SOCIAL_Ego;
/**
- * Handle for another user (who is likely pseudonymous) in the network.
+ * Handle for a pseudonym of another user in the network.
*/
struct GNUNET_SOCIAL_Nym;
/**
- * Handle to an implementation of try-and-slice.
+ * Handle for a place where social interactions happen.
+ */
+struct GNUNET_SOCIAL_Place;
+
+/**
+ * Host handle for a place that we entered.
+ */
+struct GNUNET_SOCIAL_Host;
+
+/**
+ * Guest handle for place that we entered.
*/
-struct GNUNET_SOCIAL_Slicer;
+struct GNUNET_SOCIAL_Guest;
+/**
+ * Handle that can be used to reconnect to a place as host.
+ */
+struct GNUNET_SOCIAL_HostConnection;
+
+/**
+ * Handle that can be used to reconnect to a place as guest.
+ */
+struct GNUNET_SOCIAL_GuestConnection;
/**
- * Method called from SOCIAL upon receiving a message indicating a call
- * to a 'method'.
+ * Notification about an available identity.
*
- * @param cls closure
- * @param full_method_name original method name from PSYC (may be more
- * specific than the registered method name due to try-and-slice matching)
- * @param message_id unique message counter for this message;
- * (unique only in combination with the given sender for
- * this channel)
- * @param data_off byte offset of 'data' in the overall data of the method
- * @param data_size number of bytes in 'data';
- * @param data data stream given to the method (might not be zero-terminated
- * if data is binary)
- * @param frag fragmentation status for the data
+ * @param cls
+ * Closure.
+ * @param pub_key
+ * Public key of ego.
+ * @param name
+ * Name of ego.
+ */
+typedef void
+(*GNUNET_SOCIAL_AppEgoCallback) (void *cls,
+ struct GNUNET_SOCIAL_Ego *ego,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *ego_pub_key,
+ const char *name);
+
+
+/**
+ * Entry status of a place per application.
+ */
+enum GNUNET_SOCIAL_AppPlaceState
+{
+ /**
+ * 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,
+
+ /**
+ * The place is entered by the ego,
+ * but this application is not subscribed to it.
+ */
+ GNUNET_SOCIAL_PLACE_STATE_ENTERED = 1,
+
+ /**
+ * 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 int (*GNUNET_SOCIAL_Method)(void *cls,
- const char *full_method_name,
- uint64_t message_id,
- uint64_t data_off,
- size_t data_size,
- const void *data,
- enum GNUNET_PSYC_FragmentStatus frag);
+typedef void
+(*GNUNET_SOCIAL_AppConnectedCallback) (void *cls);
/**
- * Create a try-and-slice instance.
+ * Notification about a home.
+ *
+ * @param cls
+ * Closure.
+ * @param hconn
+ * Host connection, to be used with GNUNET_SOCIAL_host_enter_reconnect()
+ * @param ego
+ * Ego used to enter the place.
+ * @param place_pub_key
+ * Public key of the place.
+ * @param place_state
+ * @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_AppPlaceState place_state);
+
+/**
+ * Notification about a place.
*
- * @return try-and-slice construct
+ * @param cls
+ * Closure.
+ * @param gconn
+ * Guest connection, to be used with GNUNET_SOCIAL_guest_enter_reconnect()
+ * @param ego
+ * Ego used to enter the place.
+ * @param place_pub_key
+ * Public key of the place.
+ * @param place_state
+ * @see enum GNUNET_SOCIAL_AppPlaceState
*/
-struct GNUNET_SOCIAL_Slicer *
-GNUNET_SOCIAL_slicer_create (void);
+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_AppPlaceState place_state);
/**
- * Add a method to the try-and-slice instance.
+ * Establish application connection to the social service.
+ *
+ * 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.
+ *
+ * @param cfg
+ * Configuration.
+ * @param ego_cb
+ * Function to notify about an available ego.
+ * @param host_cb
+ * Function to notify about a place entered as host.
+ * @param guest_cb
+ * Function to notify about a place entered as guest.
+ * @param cls
+ * Closure for the callbacks.
*
- * @param slicer try-and-slice instance to extend
- * @param method_name name of the given method, use empty string for default
- * @param method method to invoke
- * @param method_cls closure for method
+ * @return Handle that can be used to stop listening.
*/
-void
-GNUNET_SOCIAL_slicer_add (struct GNUNET_SOCIAL_Slicer *slicer,
- const char *method_name,
- GNUNET_SOCIAL_Method method,
- void *method_cls);
+struct GNUNET_SOCIAL_App *
+GNUNET_SOCIAL_app_connect (const struct GNUNET_CONFIGURATION_Handle *cfg,
+ const char *id,
+ GNUNET_SOCIAL_AppEgoCallback ego_cb,
+ GNUNET_SOCIAL_AppHostPlaceCallback host_cb,
+ GNUNET_SOCIAL_AppGuestPlaceCallback guest_cb,
+ GNUNET_SOCIAL_AppConnectedCallback connected_cb,
+ void *cls);
/**
- * Destroy a given try-and-slice instance.
+ * Disconnect app.
*
- * @param slicer slicer to destroy
+ * @param app
+ * Application handle.
+ * @param disconnect_cb
+ * Disconnect callback.
+ * @param disconnect_cls
+ * Disconnect closure.
*/
void
-GNUNET_SOCIAL_slicer_destroy (struct GNUNET_SOCIAL_Slicer *slicer);
+GNUNET_SOCIAL_app_disconnect (struct GNUNET_SOCIAL_App *app,
+ GNUNET_ContinuationCallback disconnect_cb,
+ void *disconnect_cls);
/**
- * Create an ego using the private key from the given
- * file. If the file does not exist, a fresh key is
- * created.
+ * Get the public key of @a ego.
+ *
+ * @param ego
+ * Ego.
*
- * @param keyfile name of the file with the private key for the ego,
- * NULL for ephemeral egos
- * @return handle to the ego, NULL on error
+ * @return Public key of ego.
*/
-struct GNUNET_SOCIAL_Ego *
-GNUNET_SOCIAL_ego_create (const char *keyfile);
+const struct GNUNET_CRYPTO_EcdsaPublicKey *
+GNUNET_SOCIAL_ego_get_pub_key (const struct GNUNET_SOCIAL_Ego *ego);
/**
- * Destroy a handle to an ego.
+ * Get the name of @a ego.
*
- * @param ego ego to destroy
+ * @param ego
+ * Ego.
+ *
+ * @return Public key of @a ego.
*/
-void
-GNUNET_SOCIAL_ego_destroy (struct GNUNET_SOCIAL_Ego *ego);
+const char *
+GNUNET_SOCIAL_ego_get_name (const struct GNUNET_SOCIAL_Ego *ego);
/**
- * Function called asking for nym to be admitted to the room. Should
- * call either 'GNUNET_SOCIAL_home_admit' or
- * 'GNUNET_SOCIAL_home_reject_entry' (possibly asynchronously). The
- * 'nym' reference remains valid until the
- * 'GNUNET_SOCIAL_FarewellCallback' is invoked for it.
+ * Get the public key of a @a nym.
*
- * @param cls closure
- * @param nym handle for the user who wants to join
- * @param join_msg_size number of bytes in 'join_msg'
- * @param join_msg payload given on join
+ * Suitable, for example, to be used with GNUNET_SOCIAL_zone_add_nym().
+ *
+ * @param nym
+ * Pseudonym to map to a cryptographic identifier.
+ *
+ * @return Public key of nym.
*/
-typedef void (*GNUNET_SOCIAL_AnswerDoorCallback)(void *cls,
- struct GNUNET_SOCIAL_Nym *nym,
- size_t join_msg_size,
- const void *join_msg);
+const struct GNUNET_CRYPTO_EcdsaPublicKey *
+GNUNET_SOCIAL_nym_get_pub_key (const struct GNUNET_SOCIAL_Nym *nym);
/**
- * Function called when a 'nym' leaves the room. This is
- * also called if the 'nym' was never given permission to
- * enter (i.e. the 'nym' stopped asking to get in).
+ * Get the hash of the public key of a @a nym.
*
- * @param cls closure
- * @param nym handle for the user who left
+ * @param nym
+ * Pseudonym to map to a cryptographic identifier.
+ *
+ * @return Hash of the public key of nym.
*/
-typedef void (*GNUNET_SOCIAL_FarewellCallback)(void *cls,
- struct GNUNET_SOCIAL_Nym *nym);
+const struct GNUNET_HashCode *
+GNUNET_SOCIAL_nym_get_pub_key_hash (const struct GNUNET_SOCIAL_Nym *nym);
/**
- * Create a new home to host guests (nyms).
+ * Function called asking for nym to be admitted to the place.
+ *
+ * Should call either GNUNET_SOCIAL_host_admit() or
+ * GNUNET_SOCIAL_host_reject_entry() (possibly asynchronously). If this host
+ * cannot decide, it is fine to call neither function, in which case hopefully
+ * some other host of the place exists that will make the decision. The @a nym
+ * reference remains valid until the #GNUNET_SOCIAL_FarewellCallback is invoked
+ * for it.
*
- * @param cfg configuration to contact the social service
- * @param home_keyfile file with the private key for the home,
- * created if the file does not exist;
- * pass NULL for ephemeral homes
- * @param join_policy what is our policy for allowing people in?
- * @param ego owner of the home (host)
- * @param slicer slicer to handle guests talking
- * @param listener_cb function to handle new nyms that want to join
- * @param farewell_cb function to handle departing nyms
- * @param cls closure for 'listener_cb' and 'farewell_cb'
- * @return handle for a new home
+ * @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.
*/
-struct GNUNET_SOCIAL_Home *
-GNUNET_SOCIAL_home_enter (const struct GNUNET_CONFIGURATION_Handle *cfg,
- const char *home_keyfile,
- enum GNUNET_MULTICAST_JoinPolicy join_policy,
- struct GNUNET_SOCIAL_Ego *ego,
- struct GNUNET_SOCIAL_Slicer *slicer,
- GNUNET_SOCIAL_AnswerDoorCallback listener_cb,
- GNUNET_SOCIAL_FarewellCallback farewell_cb,
- void *cls);
+typedef void
+(*GNUNET_SOCIAL_AnswerDoorCallback) (void *cls,
+ struct GNUNET_SOCIAL_Nym *nym,
+ const char *method_name,
+ struct GNUNET_PSYC_Environment *env,
+ const void *data,
+ size_t data_size);
/**
- * Admit 'nym' to the 'home'. 'nym' will remain valid until either
- * the home is destroyed or 'nym' leaves.
+ * Function called when a @a nym leaves the place.
*
- * @param home home to allow 'nym' to join
- * @param nym handle for the entity that wants to join
+ * This is also called if the @a nym was never given permission to enter
+ * (i.e. the @a nym stopped asking to get in).
+ *
+ * @param cls
+ * Closure.
+ * @param nym
+ * Handle for the user who left.
*/
-void
-GNUNET_SOCIAL_home_admit (struct GNUNET_SOCIAL_Home *home,
- struct GNUNET_SOCIAL_Nym *nym);
+typedef void
+(*GNUNET_SOCIAL_FarewellCallback) (void *cls,
+ const struct GNUNET_SOCIAL_Nym *nym,
+ struct GNUNET_PSYC_Environment *env);
/**
- * Throw 'nym' out of the 'home'. 'nym' will remain valid
- * until the 'GNUNET_SOCIAL_FarewellCallback' is invoked, which
- * should be very soon after this call.
+ * Function called after the host entered a home.
*
- * @param home home to allow 'nym' to join
- * @param nym handle for the entity that wants to join
+ * @param cls
+ * Closure.
+ * @param result
+ * #GNUNET_OK on success, or
+ * #GNUNET_SYSERR on error.
+ * @param place_pub_key
+ * Public key of home.
+ * @param max_message_id
+ * Last message ID sent to the channel.
+ * Or 0 if no messages have been sent to the place yet.
*/
-void
-GNUNET_SOCIAL_home_evict (struct GNUNET_SOCIAL_Home *home,
- struct GNUNET_SOCIAL_Nym *nym);
+typedef void
+(*GNUNET_SOCIAL_HostEnterCallback) (void *cls, int result,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *place_pub_key,
+ uint64_t max_message_id);
/**
- * Refuse 'nym' entry into the 'home'.
+ * Enter a place as host.
+ *
+ * A place is created upon first entering, and it is active until permanently
+ * left using GNUNET_SOCIAL_host_leave().
*
- * @param home home to disallow 'nym' to join
- * @param nym handle for the entity that wanted to join
+ * @param cfg
+ * Configuration to contact the social service.
+ * @param ego
+ * Identity of the host.
+ * @param place_key
+ * Private-public key pair of the place.
+ * NULL for ephemeral places.
+ * @param policy
+ * Policy specifying entry and history restrictions for the place.
+ * @param slicer
+ * Slicer to handle incoming messages.
+ * @param enter_cb
+ * Function called when the place is entered and ready to use.
+ * @param answer_door_cb
+ * Function to handle new nyms that want to enter.
+ * @param farewell_cb
+ * Function to handle departing nyms.
+ * @param cls
+ * Closure for the callbacks.
+ *
+ * @return Handle for the host.
*/
-void
-GNUNET_SOCIAL_home_reject_entry (struct GNUNET_SOCIAL_Home *home,
- struct GNUNET_SOCIAL_Nym *nym);
+struct GNUNET_SOCIAL_Host *
+GNUNET_SOCIAL_host_enter (const struct GNUNET_SOCIAL_App *app,
+ const struct GNUNET_SOCIAL_Ego *ego,
+ enum GNUNET_PSYC_Policy policy,
+ struct GNUNET_PSYC_Slicer *slicer,
+ GNUNET_SOCIAL_HostEnterCallback enter_cb,
+ GNUNET_SOCIAL_AnswerDoorCallback answer_door_cb,
+ GNUNET_SOCIAL_FarewellCallback farewell_cb,
+ void *cls);
/**
- * Get the identity of a user (suitable, for example, to be used
- * with 'GNUNET_NAMESTORE_zone_to_name').
+ * Reconnect to an already entered place as host.
*
- * @param nym pseydonym to map to a cryptographic identifier
- * @param identity set to the identity of the nym (short hash of the public key)
+ * @param hconn
+ * Host connection handle.
+ * @see GNUNET_SOCIAL_app_connect() & GNUNET_SOCIAL_AppHostPlaceCallback()
+ * @param slicer
+ * Slicer to handle incoming messages.
+ * @param enter_cb
+ * Function called when the place is entered and ready to use.
+ * @param answer_door_cb
+ * Function to handle new nyms that want to enter.
+ * @param farewell_cb
+ * Function to handle departing nyms.
+ * @param cls
+ * Closure for the callbacks.
+ *
+ * @return Handle for the host.
*/
-void
-GNUNET_SOCIAL_nym_get_identity (struct GNUNET_SOCIAL_Nym *nym,
- struct GNUNET_CRYPTO_ShortHashCode *identity);
+struct GNUNET_SOCIAL_Host *
+GNUNET_SOCIAL_host_enter_reconnect (struct GNUNET_SOCIAL_HostConnection *hconn,
+ struct GNUNET_PSYC_Slicer *slicer,
+ GNUNET_SOCIAL_HostEnterCallback enter_cb,
+ GNUNET_SOCIAL_AnswerDoorCallback answer_door_cb,
+ GNUNET_SOCIAL_FarewellCallback farewell_cb,
+ void *cls);
/**
- * Obtain the (cryptographic, binary) address for the home.
- *
- * @param home home to get the (public) address from
- * @param crypto_address address suitable for storing in GADS,
- * i.e. in 'HEX.place' or within the respective GADS record type ("PLACE")
+ * Decision whether to admit @a nym into the place or refuse entry.
+ *
+ * @param hst
+ * Host of the place.
+ * @param nym
+ * Handle for the entity that wanted to enter.
+ * @param is_admitted
+ * #GNUNET_YES if @a nym is admitted,
+ * #GNUNET_NO if @a nym is refused entry,
+ * #GNUNET_SYSERR if we cannot answer the request.
+ * @param entry_resp
+ * Entry response message, or NULL.
+ * @return #GNUNET_OK on success,
+ * #GNUNET_SYSERR if the message is too large.
*/
-void
-GNUNET_SOCIAL_home_get_address (struct GNUNET_SOCIAL_Home *home,
- struct GNUNET_HashCode *crypto_address);
+int
+GNUNET_SOCIAL_host_entry_decision (struct GNUNET_SOCIAL_Host *hst,
+ struct GNUNET_SOCIAL_Nym *nym,
+ int is_admitted,
+ const struct GNUNET_PSYC_Message *entry_resp);
/**
- * (re)decorate the home by changing objects in it. If
- * the operation is 'GNUNET_PSYC_SOT_SET_VARIABLE' then
- * the decoration only applies to the next announcement
- * by the home owner.
+ * Throw @a nym out of the place.
+ *
+ * Sends a _notice_place_leave announcement to the home.
+ *
+ * The @a nym reference will remain valid until the
+ * #GNUNET_SOCIAL_FarewellCallback is invoked,
+ * which should be very soon after this call.
*
- * @param home the home to decorate
- * @param operation operation to perform on the object
- * @param object_name name of the object to modify
- * @param object_value_size size of the given 'object_value'
- * @param object_value value to use for the modification
+ * @param host
+ * Host of the place.
+ * @param nym
+ * Handle for the entity to be ejected.
+ * @param env
+ * Environment for the message or NULL.
+ * _nym is set to @e nym regardless whether an @e env is provided.
*/
void
-GNUNET_SOCIAL_home_decorate (struct GNUNET_SOCIAL_Home *home,
- enum GNUNET_PSYC_Operator operation,
- const char *object_name,
- size_t object_value_size,
- const void *object_value);
+GNUNET_SOCIAL_host_eject (struct GNUNET_SOCIAL_Host *host,
+ const struct GNUNET_SOCIAL_Nym *nym,
+ struct GNUNET_PSYC_Environment *env);
+
+
+/**
+ * Flags for announcements by a host.
+ */
+enum GNUNET_SOCIAL_AnnounceFlags
+{
+ GNUNET_SOCIAL_ANNOUNCE_NONE = 0,
+
+ /**
+ * Whether this announcement removes all objects from the place.
+ *
+ * New objects can be still added to the now empty place using the @e env
+ * parameter of the same announcement.
+ */
+ GNUNET_SOCIAL_ANNOUNCE_CLEAR_OBJECTS = 1 << 0
+};
/**
/**
- * This function allows the home owner to send a message to all
- * nyms that are present in the home.
+ * Send a message to all nyms that are present in the place.
+ *
+ * This function is restricted to the host. Nyms can only send requests
+ * to the host who can decide to relay it to everyone in the place.
+ *
+ * @param host
+ * Host of the place.
+ * @param method_name
+ * Method to use for the announcement.
+ * @param env
+ * Environment containing variables for the message and operations
+ * on objects of the place.
+ * Has to remain available until the first call to @a notify_data.
+ * Can be NULL.
+ * @param notify_data
+ * Function to call to get the payload of the announcement.
+ * @param notify_data_cls
+ * Closure for @a notify.
+ * @param flags
+ * Flags for this announcement.
*
- * @param home home to address the announcement to
- * @param full_method_name method to use for the announcement
- * @param notify function to call to get the payload of the announcement
- * @param notify_cls closure for 'notify'
- * @return NULL on error (announcement already in progress?)
+ * @return NULL on error (another announcement already in progress?).
*/
struct GNUNET_SOCIAL_Announcement *
-GNUNET_SOCIAL_place_announce (struct GNUNET_SOCIAL_Home *home,
- const char *full_method_name,
- GNUNET_PSYC_OriginReadyNotify notify,
- void *notify_cls);
+GNUNET_SOCIAL_host_announce (struct GNUNET_SOCIAL_Host *host,
+ const char *method_name,
+ const struct GNUNET_PSYC_Environment *env,
+ GNUNET_PSYC_TransmitNotifyData notify_data,
+ void *notify_data_cls,
+ enum GNUNET_SOCIAL_AnnounceFlags flags);
+
+
+/**
+ * Resume transmitting announcement.
+ *
+ * @param a
+ * The announcement to resume.
+ */
+void
+GNUNET_SOCIAL_host_announce_resume (struct GNUNET_SOCIAL_Announcement *a);
/**
* Cancel announcement.
*
- * @param a the announcement to cancel
+ * @param a
+ * The announcement to cancel.
*/
void
-GNUNET_SOCIAL_place_announce_cancel (struct GNUNET_SOCIAL_Announcement *a);
+GNUNET_SOCIAL_host_announce_cancel (struct GNUNET_SOCIAL_Announcement *a);
/**
- * Convert our home to a place so we can access it via the place API.
+ * Allow relaying messages from guests matching a given @a method_prefix.
*
- * @param home handle for the home
- * @return place handle for the same home, valid as long as 'home' is valid;
- * do NOT try to 'GNUNET_SOCIAL_place_leave' this place, it's your home!
+ * @param host
+ * The host.
+ * @param method_prefix
+ * Method prefix to allow.
*/
-struct GNUNET_SOCIAL_Place *
-GNUNET_SOCIAL_home_to_place (struct GNUNET_SOCIAL_Home *home);
+void
+GNUNET_SOCIAL_host_relay_allow_method (struct GNUNET_SOCIAL_Host *host,
+ const char *method_prefix);
/**
- * Leave a home, visitors can stay.
+ * Allow relaying changes to objects of the place.
*
- * @param home home to leave (handle becomes invalid).
+ * Only applies to messages with an allowed method name.
+ * @see GNUNET_SCOIAL_host_relay_allow_method()
+ *
+ * @param host
+ * The host.
+ * @param object_prefix
+ * Object prefix to allow modifying.
*/
void
-GNUNET_SOCIAL_home_leave (struct GNUNET_SOCIAL_Home *home);
+GNUNET_SOCIAL_host_relay_allow_method (struct GNUNET_SOCIAL_Host *host,
+ const char *object_prefix);
/**
- * Destroy a home, all guests will be evicted.
+ * Stop relaying messages from guests.
+ *
+ * Remove all allowed relay rules.
+ *
+ *
*
- * @param home home to destroy
*/
void
-GNUNET_SOCIAL_home_destroy (struct GNUNET_SOCIAL_Home *home);
+GNUNET_SOCIAL_host_relay_stop (struct GNUNET_SOCIAL_Host *host);
/**
- * Join a place (home hosted by someone else).
+ * Obtain handle for a hosted place.
*
- * @param cfg configuration to contact the social service
- * @param ego owner of the home (host)
- * @param address address of the place to join (GADS name, i.e. 'room.friend.gads'),
- * if the name has the form 'HEX.place', GADS is not
- * used and HEX is assumed to be the hash of the public
- * key already; 'HEX.zkey' however would refer to
- * the 'PLACE' record in the GADS zone with the public key
- * 'HEX'.
- * @param join_msg_size number of bytes in 'join_msg'
- * @param join_msg message to give to the join callback
- * @return NULL on errors, otherwise handle to the place
+ * The returned handle can be used to access the place API.
+ *
+ * @param host
+ * Handle for the host.
+ *
+ * @return Handle for the hosted place, valid as long as @a host is valid.
*/
struct GNUNET_SOCIAL_Place *
-GNUNET_SOCIAL_place_join (const struct GNUNET_CONFIGURATION_Handle *cfg,
- struct GNUNET_SOCIAL_Ego *ego,
- const char *address,
- struct GNUNET_SOCIAL_Slicer *slicer,
- size_t join_msg_size,
- const void *join_msg);
+GNUNET_SOCIAL_host_get_place (struct GNUNET_SOCIAL_Host *host);
/**
+ * Disconnect from a home.
*
+ * Invalidates host handle.
+ *
+ * @param hst
+ * The host to disconnect.
+ * @param disconnect_cb
+ * Function called after disconnected from the service.
+ * @param cls
+ * Closure for @a disconnect_cb.
*/
-struct GNUNET_SOCIAL_WatchHandle;
+void
+GNUNET_SOCIAL_host_disconnect (struct GNUNET_SOCIAL_Host *hst,
+ GNUNET_ContinuationCallback disconnect_cb,
+ void *cls);
+
/**
- *
+ * Stop hosting a home.
+ *
+ * Sends a _notice_place_closing announcement to the home.
+ * Invalidates host handle.
*
- * @param
- * @param
- * @param
- * @param
+ * @param hst
+ * Host leaving.
+ * @param env
+ * Environment for the message or NULL.
+ * @param disconnect_cb
+ * Function called after the host left the place
+ * and disconnected from the service.
+ * @param cls
+ * Closure for @a disconnect_cb.
*/
-struct GNUNET_SOCIAL_WatchHandle *
-GNUNET_SOCIAL_place_watch (struct GNUNET_SOCIAL_Place *place,
- const char *object_filter,
- GNUNET_PSYC_StateCallback state_cb,
- void *state_cb_cls);
+void
+GNUNET_SOCIAL_host_leave (struct GNUNET_SOCIAL_Host *hst,
+ const struct GNUNET_PSYC_Environment *env,
+ GNUNET_ContinuationCallback disconnect_cb,
+ void *cls);
/**
- *
+ * Function called after the guest entered the local copy of the place.
+ *
+ * History and object query functions can be used after this call,
+ * but new messages can't be sent or received.
*
- * @param
+ * @param cls
+ * Closure.
+ * @param result
+ * #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.
*/
-void
-GNUNET_SOCIAL_place_watch_cancel (struct GNUNET_SOCIAL_WatchHandle *wh);
+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 data
+ * Entry response message.
*/
-struct GNUNET_SOCIAL_LookHandle;
+typedef void
+(*GNUNET_SOCIAL_EntryDecisionCallback) (void *cls,
+ int is_admitted,
+ const struct GNUNET_PSYC_Message *entry_resp);
+
/**
- * Look at all objects in the place.
+ * Request entry to a place as a guest.
+ *
+ * @param app
+ * Application handle.
+ * @param ego
+ * Identity of the guest.
+ * @param place_pub_key
+ * Public key of the place to enter.
+ * @param flags
+ * Flags for the entry.
+ * @param origin
+ * Peer identity of the origin of the underlying multicast group.
+ * @param relay_count
+ * Number of elements in the @a relays array.
+ * @param relays
+ * Relays for the underlying multicast group.
+ * @param entry_msg
+ * Entry message.
+ * @param slicer
+ * Slicer to use for processing incoming requests from guests.
*
+ * @return NULL on errors, otherwise handle for the guest.
*/
-struct GNUNET_SOCIAL_LookHandle *
-GNUNET_SOCIAL_place_look (struct GNUNET_SOCIAL_Place *place,
- GNUNET_PSYC_StateCallback state_cb,
- void *state_cb_cls);
+struct GNUNET_SOCIAL_Guest *
+GNUNET_SOCIAL_guest_enter (const struct GNUNET_SOCIAL_App *app,
+ const struct GNUNET_SOCIAL_Ego *ego,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *place_pub_key,
+ enum GNUNET_PSYC_SlaveJoinFlags flags,
+ const struct GNUNET_PeerIdentity *origin,
+ uint32_t relay_count,
+ const struct GNUNET_PeerIdentity *relays,
+ const struct GNUNET_PSYC_Message *entry_msg,
+ struct GNUNET_PSYC_Slicer *slicer,
+ GNUNET_SOCIAL_GuestEnterCallback local_enter_cb,
+ GNUNET_SOCIAL_EntryDecisionCallback entry_dcsn_cb,
+ void *cls);
/**
- * Look at matching objects in the place.
+ * Request entry to a place by name as a guest.
+ *
+ * @param app
+ * Application handle.
+ * @param ego
+ * Identity of the guest.
+ * @param gns_name
+ * GNS name of the place to enter. Either in the form of
+ * 'room.friend.gnu', or 'NYMPUBKEY.zkey'. This latter case refers to
+ * the 'PLACE' record of the empty label ("+") in the GNS zone with the
+ * nym's public key 'NYMPUBKEY', and can be used to request entry to a
+ * pseudonym's place directly.
+ * @param password
+ * Password to decrypt the record, or NULL for cleartext records.
+ * @param join_msg
+ * Entry request message.
+ * @param slicer
+ * Slicer to use for processing incoming requests from guests.
+ * @param local_enter_cb
+ * Called upon connection established to the social service.
+ * @param entry_decision_cb
+ * Called upon receiving entry decision.
*
+ * @return NULL on errors, otherwise handle for the guest.
*/
-struct GNUNET_SOCIAL_LookHandle *
-GNUNET_SOCIAL_place_look_for (struct GNUNET_SOCIAL_Place *place,
- const char *object_filter,
- GNUNET_PSYC_StateCallback state_cb,
- void *state_cb_cls);
+struct GNUNET_SOCIAL_Guest *
+GNUNET_SOCIAL_guest_enter_by_name (const struct GNUNET_SOCIAL_App *app,
+ const struct GNUNET_SOCIAL_Ego *ego,
+ const char *gns_name,
+ const char *password,
+ const struct GNUNET_PSYC_Message *join_msg,
+ struct GNUNET_PSYC_Slicer *slicer,
+ GNUNET_SOCIAL_GuestEnterCallback local_enter_cb,
+ GNUNET_SOCIAL_EntryDecisionCallback entry_decision_cb,
+ void *cls);
/**
- *
+ * Reconnect to an already entered place as guest.
+ *
+ * @param gconn
+ * Guest connection handle.
+ * @see GNUNET_SOCIAL_app_connect() & GNUNET_SOCIAL_AppGuestPlaceCallback()
+ * @param flags
+ * Flags for the entry.
+ * @param slicer
+ * Slicer to use for processing incoming requests from guests.
+ * @param local_enter_cb
+ * Called upon connection established to the social service.
+ * @param entry_decision_cb
+ * Called upon receiving entry decision.
*
- * @param lh
+ * @return NULL on errors, otherwise handle for the guest.
*/
-void
-GNUNET_SOCIAL_place_look_cancel (struct GNUNET_SOCIAL_LookHandle *lh);
+struct GNUNET_SOCIAL_Guest *
+GNUNET_SOCIAL_guest_enter_reconnect (struct GNUNET_SOCIAL_GuestConnection *gconn,
+ enum GNUNET_PSYC_SlaveJoinFlags flags,
+ struct GNUNET_PSYC_Slicer *slicer,
+ GNUNET_SOCIAL_GuestEnterCallback local_enter_cb,
+ void *cls);
+/**
+ * Flags for talking to the host of a place.
+ */
+enum GNUNET_SOCIAL_TalkFlags
+{
+ GNUNET_SOCIAL_TALK_NONE = 0
+};
+
/**
- * Look at a particular object in the place.
+ * A talk request.
+ */
+struct GNUNET_SOCIAL_TalkRequest;
+
+
+/**
+ * Talk to the host of the place.
*
* @param place
- * @param object_name
- * @param value_size set to the size of the returned value
- * @return NULL if there is no such object at this place
+ * Place where we want to talk to the host.
+ * @param method_name
+ * Method to invoke on the host.
+ * @param env
+ * Environment containing variables for the message, or NULL.
+ * @param notify_data
+ * Function to use to get the payload for the method.
+ * @param notify_data_cls
+ * Closure for @a notify_data.
+ * @param flags
+ * Flags for the message being sent.
+ *
+ * @return NULL if we are already trying to talk to the host,
+ * otherwise handle to cancel the request.
*/
-const void *
-GNUNET_SOCIAL_place_look_at (struct GNUNET_SOCIAL_Place *place,
- const char *object_name,
- size_t *value_size);
+struct GNUNET_SOCIAL_TalkRequest *
+GNUNET_SOCIAL_guest_talk (struct GNUNET_SOCIAL_Guest *guest,
+ const char *method_name,
+ const struct GNUNET_PSYC_Environment *env,
+ GNUNET_PSYC_TransmitNotifyData notify_data,
+ void *notify_data_cls,
+ enum GNUNET_SOCIAL_TalkFlags flags);
/**
- * Frame the (next) talk by setting some variables for it.
+ * Resume talking to the host of the place.
*
- * @param place
- * @param variable_name
- * @param value_size number of bytes in 'value'
- * @param value
+ * @param tr
+ * Talk request to resume.
*/
void
-GNUNET_SOCIAL_place_frame_talk (struct GNUNET_SOCIAL_Place *place,
- const char *variable_name,
- size_t value_size,
- const void *value);
+GNUNET_SOCIAL_guest_talk_resume (struct GNUNET_SOCIAL_TalkRequest *tr);
/**
+ * Cancel talking to the host of the place.
*
+ * @param tr
+ * Talk request to cancel.
*/
-struct GNUNET_SOCIAL_TalkRequest;
+void
+GNUNET_SOCIAL_guest_talk_cancel (struct GNUNET_SOCIAL_TalkRequest *tr);
/**
- * Talk to the host of the place.
+ * Disconnect from a place.
*
- * @param place place at which we want to talk to the host
- * @param method_name method to invoke on the host
- * @param cb function to use to get the payload for the method
- * @param cb_cls closure for 'cb'
- * @return NULL if we are already trying to talk to the host,
- * otherwise handle to cancel the request
+ * Invalidates guest handle.
+ *
+ * @param gst
+ * The guest to disconnect.
+ * @param disconnect_cb
+ * Function called after disconnected from the service.
+ * @param cls
+ * Closure for @a disconnect_cb.
*/
-struct GNUNET_SOCIAL_TalkRequest *
-GNUNET_SOCIAL_place_talk (struct GNUNET_SOCIAL_Place *place,
- const char *method_name,
- GNUNET_PSYC_OriginReadyNotify cb,
- void *cb_cls);
+void
+GNUNET_SOCIAL_guest_disconnect (struct GNUNET_SOCIAL_Guest *gst,
+ GNUNET_ContinuationCallback disconnect_cb,
+ void *cls);
/**
- *
+ * Leave a place temporarily or permanently.
*
- * @param tr
+ * Notifies the owner of the place about leaving, and destroys the place handle.
+ *
+ * @param place
+ * Place to leave.
+ * @param env
+ * Optional environment for the leave message if @a keep_active
+ * is #GNUNET_NO. NULL if not needed.
+ * @param disconnect_cb
+ * Called upon disconnecting from the social service.
*/
void
-GNUNET_SOCIAL_place_talk_cancel (struct GNUNET_SOCIAL_TalkRequest *tr);
-
+GNUNET_SOCIAL_guest_leave (struct GNUNET_SOCIAL_Guest *gst,
+ struct GNUNET_PSYC_Environment *env,
+ GNUNET_ContinuationCallback disconnect_cb,
+ void *leave_cls);
+
+
+/**
+ * Obtain handle for a place entered as guest.
+ *
+ * The returned handle can be used to access the place API.
+ *
+ * @param guest Handle for the guest.
+ *
+ * @return Handle for the place, valid as long as @a guest is valid.
+ */
+struct GNUNET_SOCIAL_Place *
+GNUNET_SOCIAL_guest_get_place (struct GNUNET_SOCIAL_Guest *guest);
+
+
+/**
+ * A history request.
+ */
+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.
*/
-struct GNUNET_SOCIAL_HistoryLesson;
+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.
+ *
+ * Messages are returned through the @a slicer function
+ * and have the #GNUNET_PSYC_MESSAGE_HISTORIC flag set.
*
- *
- * @param place place we want to learn more about
- * @param start_message_id first historic message we are interested in
- * @param end_message_id last historic message we are interested in (inclusive)
- * @param slicer slicer to use to process history
- * @return handle to abort history lesson, never NULL (multiple lesssons
- * at the same time are allowed)
+ * @param place
+ * Place we want to learn more about.
+ * @param start_message_id
+ * First historic message we are interested in.
+ * @param end_message_id
+ * Last historic message we are interested in (inclusive).
+ * @param method_prefix
+ * Only retrieve messages with this method prefix.
+ * @param flags
+ * OR'ed GNUNET_PSYC_HistoryReplayFlags
+ * @param slicer
+ * Slicer to use for retrieved messages.
+ * Can be the same as the slicer of the place.
+ * @param result_cb
+ * Function called after all messages retrieved.
+ * NULL if not needed.
+ * @param cls Closure for @a result_cb.
*/
-struct GNUNET_SOCIAL_HistoryLesson *
-GNUNET_SOCIAL_place_get_history (struct GNUNET_SOCIAL_Place *place,
- uint64_t start_message_id,
- uint64_t end_message_id,
- struct GNUNET_SOCIAL_Slicer *slicer);
+struct GNUNET_SOCIAL_HistoryRequest *
+GNUNET_SOCIAL_place_history_replay (struct GNUNET_SOCIAL_Place *plc,
+ uint64_t start_message_id,
+ uint64_t end_message_id,
+ const char *method_prefix,
+ uint32_t flags,
+ struct GNUNET_PSYC_Slicer *slicer,
+ GNUNET_ResultCallback result_cb,
+ void *cls);
+
+/**
+ * Learn about the history of a place.
+ *
+ * Sends messages through the slicer function of the place where
+ * start_message_id <= message_id <= end_message_id.
+ * The messages will have the #GNUNET_PSYC_MESSAGE_HISTORIC flag set.
+ *
+ * To get the latest message, use 0 for both the start and end message ID.
+ *
+ * @param place
+ * Place we want to learn more about.
+ * @param message_limit
+ * Maximum number of historic messages we are interested in.
+ * @param result_cb
+ * Function called after all messages retrieved.
+ * NULL if not needed.
+ * @param cls Closure for @a result_cb.
+ */
+struct GNUNET_SOCIAL_HistoryRequest *
+GNUNET_SOCIAL_place_history_replay_latest (struct GNUNET_SOCIAL_Place *plc,
+ uint64_t message_limit,
+ const char *method_prefix,
+ uint32_t flags,
+ struct GNUNET_PSYC_Slicer *slicer,
+ GNUNET_ResultCallback result_cb,
+ void *cls);
/**
- * Stop processing messages from the history lesson. Must also be
- * called explicitly after all of the requested messages have been
- * received.
+ * Cancel learning about the history of a place.
*
- * @param hist history lesson to cancel
+ * @param hist
+ * History lesson to cancel.
*/
void
-GNUNET_SOCIAL_place_get_history_cancel (struct GNUNET_SOCIAL_HistoryLesson *hist);
+GNUNET_SOCIAL_place_history_replay_cancel (struct GNUNET_SOCIAL_HistoryRequest *hist);
+
+
+struct GNUNET_SOCIAL_LookHandle;
+
+
+/**
+ * Look at a particular object in the place.
+ *
+ * The best matching object is returned (its name might be less specific than
+ * what was requested).
+ *
+ * @param place
+ * The place to look the object at.
+ * @param full_name
+ * Full name of the object.
+ *
+ * @return NULL if there is no such object at this place.
+ */
+struct GNUNET_SOCIAL_LookHandle *
+GNUNET_SOCIAL_place_look_at (struct GNUNET_SOCIAL_Place *plc,
+ const char *full_name,
+ GNUNET_PSYC_StateVarCallback var_cb,
+ GNUNET_ResultCallback result_cb,
+ void *cls);
+
+/**
+ * Look for objects in the place with a matching name prefix.
+ *
+ * @param place
+ * The place to look its objects at.
+ * @param name_prefix
+ * Look at objects with names beginning with this value.
+ * @param var_cb
+ * Function to call for each object found.
+ * @param cls
+ * Closure for callback function.
+ *
+ * @return Handle that can be used to stop looking at objects.
+ */
+struct GNUNET_SOCIAL_LookHandle *
+GNUNET_SOCIAL_place_look_for (struct GNUNET_SOCIAL_Place *plc,
+ const char *name_prefix,
+ GNUNET_PSYC_StateVarCallback var_cb,
+ GNUNET_ResultCallback result_cb,
+ void *cls);
+
-
/**
- * Leave a place (destroys the place handle). Can either move our
- * user into an 'away' state (in which we continue to record ongoing
- * conversations and state changes if our peer is running), or
- * leave the place entirely and stop following the conversation.
+ * Stop looking at objects.
*
- * @param place place to leave
- * @param keep_following GNUNET_YES to ask the social service to continue
- * to follow the conversation, GNUNET_NO to fully leave the place
+ * @param lh Look handle to stop.
*/
void
-GNUNET_SOCIAL_place_leave (struct GNUNET_SOCIAL_Place *place,
- int keep_following);
+GNUNET_SOCIAL_place_look_cancel (struct GNUNET_SOCIAL_LookHandle *lh);
+
+
+/**
+ * Advertise a @e place in the GNS zone of @a ego.
+ *
+ * @param app
+ * Application handle.
+ * @param ego
+ * Ego.
+ * @param place_pub_key
+ * Public key of place to add.
+ * @param name
+ * The name for the PLACE record to put in the zone.
+ * @param password
+ * Password used to encrypt the record or NULL to keep it cleartext.
+ * @param relay_count
+ * Number of elements in the @a relays array.
+ * @param relays
+ * List of relays to put in the PLACE record to advertise
+ * as entry points to the place in addition to the origin.
+ * @param expiration_time
+ * Expiration time of the record, use 0 to remove the record.
+ * @param result_cb
+ * Function called with the result of the operation.
+ * @param result_cls
+ * Closure for @a result_cb
+ *
+ * @return #GNUNET_OK if the request was sent,
+ * #GNUNET_SYSERR on error, e.g. the name/password is too long.
+ */
+int
+GNUNET_SOCIAL_zone_add_place (const struct GNUNET_SOCIAL_App *app,
+ const struct GNUNET_SOCIAL_Ego *ego,
+ const char *name,
+ const char *password,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *place_pub_key,
+ const struct GNUNET_PeerIdentity *origin,
+ uint32_t relay_count,
+ const struct GNUNET_PeerIdentity *relays,
+ struct GNUNET_TIME_Absolute expiration_time,
+ GNUNET_ResultCallback result_cb,
+ void *result_cls);
+/**
+ * Add public key to the GNS zone of the @e ego.
+ *
+ * @param cfg
+ * Configuration.
+ * @param ego
+ * Ego.
+ * @param name
+ * The name for the PKEY record to put in the zone.
+ * @param nym_pub_key
+ * Public key of nym to add.
+ * @param expiration_time
+ * Expiration time of the record, use 0 to remove the record.
+ * @param result_cb
+ * Function called with the result of the operation.
+ * @param result_cls
+ * Closure for @a result_cb
+ *
+ * @return #GNUNET_OK if the request was sent,
+ * #GNUNET_SYSERR on error, e.g. the name is too long.
+ */
+int
+GNUNET_SOCIAL_zone_add_nym (const struct GNUNET_SOCIAL_App *app,
+ const struct GNUNET_SOCIAL_Ego *ego,
+ const char *name,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *nym_pub_key,
+ struct GNUNET_TIME_Absolute expiration_time,
+ GNUNET_ResultCallback result_cb,
+ void *result_cls);
+
#if 0 /* keep Emacsens' auto-indent happy */
{
/* ifndef GNUNET_SOCIAL_SERVICE_H */
#endif
-/* end of gnunet_social_service.h */
+
+/** @} */ /* end of group */
projects / oweals / gnunet.git / blobdiff