/*
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
- 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., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, 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 interactions using the PSYC service.
* @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_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_VERSION 0x00000000
+/**
+ * Maximum size of client ID including '\0' terminator.
+ */
+#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_App;
+
+/**
+ * Handle for an ego (own identity)
+ */
+struct GNUNET_SOCIAL_Ego;
/**
* Handle for a pseudonym of another user in the network.
struct GNUNET_SOCIAL_Guest;
/**
- * Handle to an implementation of try-and-slice.
+ * Handle that can be used to reconnect to a place as host.
*/
-struct GNUNET_SOCIAL_Slicer;
+struct GNUNET_SOCIAL_HostConnection;
+/**
+ * Handle that can be used to reconnect to a place as guest.
+ */
+struct GNUNET_SOCIAL_GuestConnection;
/**
- * 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.
+ * Notification about an available identity.
*
* @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.
+ * @param pub_key
+ * Public key of ego.
+ * @param name
+ * Name of ego.
*/
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);
+(*GNUNET_SOCIAL_AppEgoCallback) (void *cls,
+ struct GNUNET_SOCIAL_Ego *ego,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *ego_pub_key,
+ const char *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.
+ * 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 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);
+(*GNUNET_SOCIAL_AppConnectedCallback) (void *cls);
/**
- * Function called upon receiving a data fragment of a message.
+ * Notification about a home.
*
* @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.
+ * @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_DataCallback) (void *cls,
- const struct GNUNET_MessageHeader *msg,
- uint64_t message_id,
- uint64_t data_offset,
- const void *data,
- uint16_t data_size);
-
+(*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);
/**
- * End of message.
+ * Notification about a place.
*
* @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.
+ * @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
*/
typedef void
-(*GNUNET_SOCIAL_EndOfMessageCallback) (void *cls,
- const struct GNUNET_MessageHeader *msg,
- uint64_t message_id,
- uint8_t cancelled);
+(*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);
/**
- * Create a 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.
*
- * A slicer processes incoming messages and notifies callbacks about matching
- * methods or modifiers encountered.
+ * @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.
*
- * @return A new try-and-slice construct.
+ * @return Handle that can be used to stop listening.
*/
-struct GNUNET_SOCIAL_Slicer *
-GNUNET_SOCIAL_slicer_create (void);
+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);
/**
- * 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.
+ * Disconnect app.
+ *
+ * @param app
+ * Application handle.
+ * @param disconnect_cb
+ * Disconnect callback.
+ * @param disconnect_cls
+ * Disconnect closure.
*/
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);
+GNUNET_SOCIAL_app_disconnect (struct GNUNET_SOCIAL_App *app,
+ GNUNET_ContinuationCallback disconnect_cb,
+ void *disconnect_cls);
+
/**
- * Remove a registered method from the try-and-slice instance.
+ * Get the public key of @a ego.
*
- * Removes one matching handler registered with the given
- * @a method_name and callbacks.
+ * @param ego
+ * Ego.
*
- * @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.
+ * @return Public key of ego.
*/
-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);
+const struct GNUNET_CRYPTO_EcdsaPublicKey *
+GNUNET_SOCIAL_ego_get_pub_key (const struct GNUNET_SOCIAL_Ego *ego);
/**
- * Watch a place for changed objects.
+ * Get the name of @a ego.
*
- * @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.
+ * @param ego
+ * Ego.
+ *
+ * @return Public key of @a ego.
*/
-void
-GNUNET_SOCIAL_slicer_modifier_add (struct GNUNET_SOCIAL_Slicer *slicer,
- const char *object_filter,
- GNUNET_SOCIAL_ModifierCallback modifier_cb,
- void *cls);
+const char *
+GNUNET_SOCIAL_ego_get_name (const struct GNUNET_SOCIAL_Ego *ego);
/**
- * Remove a registered modifier from the try-and-slice instance.
+ * Get the public key of a @a nym.
*
- * Removes one matching handler registered with the given
- * @a object_filter and callback.
+ * Suitable, for example, to be used with GNUNET_SOCIAL_zone_add_nym().
*
- * @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.
+ * @param nym
+ * Pseudonym to map to a cryptographic identifier.
+ *
+ * @return Public key of nym.
*/
-int
-GNUNET_SOCIAL_slicer_modifier_remove (struct GNUNET_SOCIAL_Slicer *slicer,
- const char *object_filter,
- GNUNET_SOCIAL_ModifierCallback modifier_cb);
+const struct GNUNET_CRYPTO_EcdsaPublicKey *
+GNUNET_SOCIAL_nym_get_pub_key (const struct GNUNET_SOCIAL_Nym *nym);
/**
- * Destroy a given try-and-slice instance.
+ * Get the hash of the public key of a @a nym.
*
- * @param slicer
- * Slicer to destroy
+ * @param nym
+ * Pseudonym to map to a cryptographic identifier.
+ *
+ * @return Hash of the public key of nym.
*/
-void
-GNUNET_SOCIAL_slicer_destroy (struct GNUNET_SOCIAL_Slicer *slicer);
+const struct GNUNET_HashCode *
+GNUNET_SOCIAL_nym_get_pub_key_hash (const struct GNUNET_SOCIAL_Nym *nym);
/**
* 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);
/**
* 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.
- * @param variable_count Number of elements in the @a variables array.
- * @param variables Variables present in the message.
+ * @param cls
+ * Closure.
+ * @param nym
+ * Handle for the user who left.
*/
typedef void
(*GNUNET_SOCIAL_FarewellCallback) (void *cls,
- struct GNUNET_SOCIAL_Nym *nym,
- struct GNUNET_ENV_Environment *env,
- size_t variable_count,
- struct GNUNET_ENV_Modifier *variables);
+ const struct GNUNET_SOCIAL_Nym *nym,
+ struct GNUNET_PSYC_Environment *env);
/**
- * Function called after the host entered the place.
+ * Function called after the host entered a home.
*
* @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.
*/
typedef void
(*GNUNET_SOCIAL_HostEnterCallback) (void *cls, int result,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *place_pub_key,
uint64_t max_message_id);
* 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
* @return Handle for the host.
*/
struct GNUNET_SOCIAL_Host *
-GNUNET_SOCIAL_host_enter (const struct GNUNET_CONFIGURATION_Handle *cfg,
- const struct GNUNET_IDENTITY_Ego *ego,
- const struct GNUNET_CRYPTO_EddsaPrivateKey *place_key,
+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,
void *cls);
+/**
+ * Reconnect to an already entered place as host.
+ *
+ * @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.
+ */
+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);
+
+
/**
* Decision whether to admit @a nym into the place or refuse entry.
*
* #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.
*/
/**
* 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 host Host of the place.
- * @param nym Handle for the entity to be ejected.
- */
-void
-GNUNET_SOCIAL_host_eject (struct GNUNET_SOCIAL_Host *host,
- struct GNUNET_SOCIAL_Nym *nym);
-
-
-/**
- * Get the public key of a @a nym.
- *
- * Suitable, for example, to be used with GNUNET_NAMESTORE_zone_to_name().
- *
+ * @param host
+ * Host of the place.
* @param nym
- * Pseudonym to map to a cryptographic identifier.
- *
- * @return Public key of nym;
- */
-struct GNUNET_CRYPTO_EcdsaPublicKey *
-GNUNET_SOCIAL_nym_get_key (struct GNUNET_SOCIAL_Nym *nym);
-
-
-/**
- * Obtain the private-public key pair of the host.
- *
- * @param host Host to get the key of.
- * @param[out] host_key Set to the private-public key pair of the host. The
- * public part is suitable for storing in GNS within a "PLACE"
- * record, along with peer IDs to join at.
- */
-void
-GNUNET_SOCIAL_host_get_key (struct GNUNET_SOCIAL_Host *host,
- struct GNUNET_CRYPTO_EddsaPrivateKey *host_key);
-
-
-/**
- * Advertise the place in the GNS zone of the @e ego of the @a host.
- *
- * @param host Host of the place.
- * @param name The name for the PLACE record to put in the zone.
- * @param peer_count Number of elements in the @a peers array.
- * @param peers List of peers in the PLACE record that can be used to send join
- * requests to.
- * @param expiration_time Expiration time of the record, use 0 to remove the record.
- * @param password Password used to encrypt the record.
+ * 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_host_advertise (struct GNUNET_SOCIAL_Host *host,
- const char *name,
- size_t peer_count,
- const struct GNUNET_PeerIdentity *peers,
- struct GNUNET_TIME_Relative expiration_time,
- const char *password);
+GNUNET_SOCIAL_host_eject (struct GNUNET_SOCIAL_Host *host,
+ const struct GNUNET_SOCIAL_Nym *nym,
+ 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);
GNUNET_SOCIAL_host_announce_cancel (struct GNUNET_SOCIAL_Announcement *a);
+/**
+ * Allow relaying messages from guests matching a given @a method_prefix.
+ *
+ * @param host
+ * The host.
+ * @param method_prefix
+ * Method prefix to allow.
+ */
+void
+GNUNET_SOCIAL_host_relay_allow_method (struct GNUNET_SOCIAL_Host *host,
+ const char *method_prefix);
+
+
+/**
+ * Allow relaying changes to objects of the place.
+ *
+ * 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_host_relay_allow_method (struct GNUNET_SOCIAL_Host *host,
+ const char *object_prefix);
+
+
+/**
+ * Stop relaying messages from guests.
+ *
+ * Remove all allowed relay rules.
+ *
+ *
+ *
+ */
+void
+GNUNET_SOCIAL_host_relay_stop (struct GNUNET_SOCIAL_Host *host);
+
+
/**
* Obtain handle for a hosted place.
*
/**
- * Stop hosting a place.
+ * Disconnect from a home.
*
* Invalidates host handle.
*
- * @param host
- * Host leaving the place.
- * @param keep_active
- * Keep the place active after last host disconnected.
- * @param leave_cb
+ * @param hst
+ * The host to disconnect.
+ * @param disconnect_cb
+ * Function called after disconnected from the service.
+ * @param cls
+ * Closure for @a disconnect_cb.
+ */
+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 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 social service.
- * @param leave_cls
- * Closure for @a leave_cb.
+ * and disconnected from the service.
+ * @param cls
+ * Closure for @a disconnect_cb.
*/
void
-GNUNET_SOCIAL_host_leave (struct GNUNET_SOCIAL_Host *host,
- int keep_active,
- GNUNET_ContinuationCallback leave_cb,
- void *leave_cls);
+GNUNET_SOCIAL_host_leave (struct GNUNET_SOCIAL_Host *hst,
+ 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,
/**
* Request entry to a place as a guest.
*
- * @param cfg Configuration to contact the social service.
- * @param ego Identity of the guest.
- * @param crypto_address Public key of the place to enter.
- * @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 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 slicer Slicer to use for processing incoming requests from guests.
+ * @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_Guest *
-GNUNET_SOCIAL_guest_enter (const struct GNUNET_CONFIGURATION_Handle *cfg,
- const struct GNUNET_IDENTITY_Ego *ego,
- const struct GNUNET_CRYPTO_EddsaPublicKey *place_key,
+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_SOCIAL_Slicer *slicer,
+ struct GNUNET_PSYC_Slicer *slicer,
GNUNET_SOCIAL_GuestEnterCallback local_enter_cb,
- GNUNET_SOCIAL_EntryDecisionCallback entry_decision_cb,
+ GNUNET_SOCIAL_EntryDecisionCallback entry_dcsn_cb,
void *cls);
/**
- * Request entry to a place as a guest using a GNS name.
+ * Request entry to a place by name as a guest.
*
- * @param cfg Configuration to contact the social service.
- * @param ego Identity of the guest.
- * @param address GNS name of the place to enter. Either in the form of
+ * @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 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 slicer Slicer to use for processing incoming requests from guests.
+ * @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_Guest *
-GNUNET_SOCIAL_guest_enter_by_name (const struct GNUNET_CONFIGURATION_Handle *cfg,
- struct GNUNET_IDENTITY_Ego *ego,
- char *gns_name,
+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_SOCIAL_Slicer *slicer,
+ 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.
+ *
+ * @return NULL on errors, otherwise handle for the guest.
+ */
+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.
*/
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);
/**
- * Leave a place permanently.
+ * Disconnect from a place.
+ *
+ * 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.
+ */
+void
+GNUNET_SOCIAL_guest_disconnect (struct GNUNET_SOCIAL_Guest *gst,
+ GNUNET_ContinuationCallback disconnect_cb,
+ void *cls);
+
+
+/**
+ * Leave a place temporarily or permanently.
*
* Notifies the owner of the place about leaving, and destroys the place handle.
*
* @param place
- * Place to leave permanently.
- * @param keep_active
- * Keep place active after last application disconnected.
- * @param leave_cb
- * Function called after the guest left the place
- * and disconnected from the social service.
- * @param leave_cls
- * Closure for @a leave_cb.
+ * 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_guest_leave (struct GNUNET_SOCIAL_Guest *guest,
- int keep_active,
- GNUNET_ContinuationCallback leave_cb,
+GNUNET_SOCIAL_guest_leave (struct GNUNET_SOCIAL_Guest *gst,
+ 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_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 */
{
#endif
/* ifndef GNUNET_SOCIAL_SERVICE_H */
#endif
-/* end of gnunet_social_service.h */
+
+/** @} */ /* end of group */
projects / oweals / gnunet.git / blobdiff