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[GNUnet-SVN] r27458 - gnunet/src/include


From: gnunet
Subject: [GNUnet-SVN] r27458 - gnunet/src/include
Date: Mon, 17 Jun 2013 13:13:41 +0200

Author: tg
Date: 2013-06-17 13:13:40 +0200 (Mon, 17 Jun 2013)
New Revision: 27458

Modified:
   gnunet/src/include/gnunet_social_service.h
Log:
social api docs

Modified: gnunet/src/include/gnunet_social_service.h
===================================================================
--- gnunet/src/include/gnunet_social_service.h  2013-06-17 11:13:38 UTC (rev 
27457)
+++ gnunet/src/include/gnunet_social_service.h  2013-06-17 11:13:40 UTC (rev 
27458)
@@ -18,9 +18,9 @@
      Boston, MA 02111-1307, USA.
 */
 
-/**
+/** 
  * @file include/gnunet_social_service.h
- * @brief Social service; implements social functionality using the PSYC 
service
+ * @brief Social service; implements social functionality using the PSYC 
service.
  * @author tg
  * @author Christian Grothoff
  */
@@ -40,51 +40,51 @@
 #include "gnunet_multicast_service.h"
 
 
-/**
+/** 
  * Version number of GNUnet Social API.
  */
 #define GNUNET_SOCIAL_VERSION 0x00000000
 
+/** 
+ * Handle for our own presence in the network (we can of course have
+ * alter-egos).
+ */
+struct GNUNET_SOCIAL_Ego;
 
-/**
+/** 
+ * Handle for another user (who is likely pseudonymous) in the network.
+ */
+struct GNUNET_SOCIAL_Nym;
+
+/** 
  * Handle for a place where social interactions happen.
  */
 struct GNUNET_SOCIAL_Place;
 
-/**
+/** 
  * Handle for a place that one of our egos hosts.
  */
 struct GNUNET_SOCIAL_Home;
 
-/**
- * Handle for our own presence in the network (we can of course have
- * alter-egos).
- */
-struct GNUNET_SOCIAL_Ego;
-
-/**
- * Handle for another user (who is likely pseudonymous) in the network.
- */
-struct GNUNET_SOCIAL_Nym;
-
-/**
+/** 
  * Handle to an implementation of try-and-slice.
  */
 struct GNUNET_SOCIAL_Slicer;
 
 
-/**
+/** 
  * Method called from SOCIAL upon receiving a message indicating a call
- * to a 'method'.  
+ * to a 'method'.
  *
- * @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;
+ * @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'; 
+ *                    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
@@ -98,22 +98,26 @@
                                    enum GNUNET_PSYC_FragmentStatus frag);
 
 
-/**
+/** 
  * Create a try-and-slice instance.
  *
- * @return try-and-slice construct
+ * @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.
  *
- * @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
+ * A slicer processes messages and calls methods that match a message. A match
+ * happens whenever the method name of a message starts with the method_name
+ * parameter given here.
+ *
+ * @param slicer The 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.
  */
 void
 GNUNET_SOCIAL_slicer_add (struct GNUNET_SOCIAL_Slicer *slicer,
@@ -121,8 +125,9 @@
                          GNUNET_SOCIAL_Method method,
                          void *method_cls);
 
+/* FIXME: No slicer_remove for now, is it needed? */
 
-/**
+/** 
  * Destroy a given try-and-slice instance.
  *
  * @param slicer slicer to destroy
@@ -131,11 +136,12 @@
 GNUNET_SOCIAL_slicer_destroy (struct GNUNET_SOCIAL_Slicer *slicer);
 
 
-/**
- * Create an ego using the private key from the given
- * file.  If the file does not exist, a fresh key is
- * created.
+/** 
+ * Create an ego.
  *
+ * Create an ego using the private key from the given file.  If the file does
+ * not exist, a fresh key is created.
+ *
  * @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
@@ -144,7 +150,7 @@
 GNUNET_SOCIAL_ego_create (const char *keyfile);
 
 
-/**
+/** 
  * Destroy a handle to an ego.
  *
  * @param ego ego to destroy
@@ -153,19 +159,20 @@
 GNUNET_SOCIAL_ego_destroy (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).  If
- * this owner cannot decide, it is fine to call neither function, in
- * which case hopefully some other owner of the home exists that will
- * make the decision. The 'nym' reference remains valid until the
- * 'GNUNET_SOCIAL_FarewellCallback' is invoked for it.
+/** 
+ * Function called asking for nym to be admitted to the place.
  *
- * @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
+ * Should call either 'GNUNET_SOCIAL_home_admit' or
+ * 'GNUNET_SOCIAL_home_reject_entry' (possibly asynchronously).  If this owner
+ * cannot decide, it is fine to call neither function, in which case hopefully
+ * some other owner of the home exists that will make the decision. The '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 join.
+ * @param join_msg_size Number of bytes in 'join_msg'.
+ * @param join_msg Payload given on join (e.g. a password).
  */
 typedef void (*GNUNET_SOCIAL_AnswerDoorCallback)(void *cls,
                                                 struct GNUNET_SOCIAL_Nym *nym,
@@ -173,32 +180,37 @@
                                                 const void *join_msg);
 
 
-/**
- * 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).
+/** 
+ * Function called when a 'nym' leaves the place.
+ * 
+ * This is also called if the 'nym' was never given permission to enter
+ * (i.e. the 'nym' stopped asking to get in).
  *
- * @param cls closure
- * @param nym handle for the user who left
+ * @param cls Closure.
+ * @param nym Handle for the user who left.
  */
 typedef void (*GNUNET_SOCIAL_FarewellCallback)(void *cls,
                                               struct GNUNET_SOCIAL_Nym *nym);
 
 
-/**
- * Create a new home to host guests (nyms).
+/** 
+ * Enter a home where guests (nyms) can be hosted.
  *
- * @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
+ * A home is created upon first entering, and exists until
+ * 'GNUNET_SOCIAL_home_destroy' is called. It can also be left temporarily 
using
+ * 'GNUNET_SOCIAL_home_leave'.
+ *
+ * @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.
  */
 struct GNUNET_SOCIAL_Home *
 GNUNET_SOCIAL_home_enter (const struct GNUNET_CONFIGURATION_Handle *cfg,
@@ -211,39 +223,45 @@
                          void *cls);
 
 
-/**
- * Admit 'nym' to the 'home'.  'nym' will remain valid until either
- * the home is destroyed or 'nym' leaves.
+/** 
+ * Admit 'nym' to the 'home'.
  *
- * @param home home to allow 'nym' to join
- * @param nym handle for the entity that wants to join
+ * The 'nym' reference will remain valid until either the home is destroyed or
+ * 'nym' leaves.
+ *
+ * @param home Home to allow 'nym' to join.
+ * @param nym Handle for the entity that wants to join.
  */
 void
 GNUNET_SOCIAL_home_admit (struct GNUNET_SOCIAL_Home *home,
                          struct GNUNET_SOCIAL_Nym *nym);
 
 
-/**
- * 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.
+/** 
+ * Throw 'nym' out of the 'home'.
  *
- * @param home home to allow 'nym' to join
- * @param nym handle for the entity that wants to join
+ * The 'nym' reference will remain valid until the
+ * 'GNUNET_SOCIAL_FarewellCallback' is invoked,
+ * which should be very soon after this call.
+ *
+ * @param home Home to eject nym from.
+ * @param nym Handle for the entity to be ejected.
  */
 void
-GNUNET_SOCIAL_home_evict (struct GNUNET_SOCIAL_Home *home,
-                         struct GNUNET_SOCIAL_Nym *nym);
+GNUNET_SOCIAL_home_eject (struct GNUNET_SOCIAL_Home *home,
+                          struct GNUNET_SOCIAL_Nym *nym);
 
 
-/**
+/** 
  * Refuse 'nym' entry into the 'home'.
  *
- * @param home home to disallow 'nym' to join
- * @param nym handle for the entity that wanted to join
- * @param method method name to invoke on caller
- * @param message_size number of bytes in 'message' for method
- * @param message rejection message to send back
+ * @param home Home to disallow 'nym' to join.
+ * @param nym Handle for the entity that wanted to join.
+ * @param method Method name to invoke on caller.
+ * @param message_size Number of bytes in 'message' for method.
+ * @param message Rejection message to send back.
+ *
+ * FIXME: allow setting variables as well for the message
  */
 void
 GNUNET_SOCIAL_home_reject_entry (struct GNUNET_SOCIAL_Home *home,
@@ -253,41 +271,42 @@
                                 const void *message);
 
 
-/**
- * Get the identity of a user (suitable, for example, to be used
- * with 'GNUNET_NAMESTORE_zone_to_name').
+/** 
+ * Get the identity of a user.
  *
- * @param nym pseydonym to map to a cryptographic identifier
- * @param identity set to the identity of the nym (short hash of the public 
key)
+ * Suitable, for example, to be used with 'GNUNET_NAMESTORE_zone_to_name'.
+ *
+ * @param nym Pseudonym to map to a cryptographic identifier.
+ * @param identity Set to the identity of the nym (short hash of the public 
key).
  */
 void
 GNUNET_SOCIAL_nym_get_identity (struct GNUNET_SOCIAL_Nym *nym,
                                struct GNUNET_CRYPTO_ShortHashCode *identity);
 
 
-/**
+/** 
  * 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")
+ * @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")
  */
 void
 GNUNET_SOCIAL_home_get_address (struct GNUNET_SOCIAL_Home *home,
                                struct GNUNET_HashCode *crypto_address);
 
 
-/**
- * (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.
+/** 
+ * (Re)decorate the home by changing objects in it.
  *
- * @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
+ * If the operation is 'GNUNET_PSYC_SOT_SET_VARIABLE' then the decoration only
+ * applies to the next announcement by the home owner.
+ *
+ * @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.
  */
 void
 GNUNET_SOCIAL_home_decorate (struct GNUNET_SOCIAL_Home *home,
@@ -297,81 +316,85 @@
                             const void *object_value);
 
 
-/**
+/** 
  * Handle for an announcement request.
  */
 struct GNUNET_SOCIAL_Announcement;
 
 
-/**
- * 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 home.
  *
- * @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?)
+ * This function is restricted to the home owner. Nyms can 
+ *
+ * @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?).
  */
 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_home_announce (struct GNUNET_SOCIAL_Home *home,
+                             const char *full_method_name,
+                             GNUNET_PSYC_OriginReadyNotify notify,
+                             void *notify_cls);
 
 
-/**
+/** 
  * 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_home_announce_cancel (struct GNUNET_SOCIAL_Announcement *a);
 
 
-/**
+/** 
  * Convert our home to a place so we can access it via the place API.
  *
- * @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 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!m
  */
 struct GNUNET_SOCIAL_Place *
 GNUNET_SOCIAL_home_to_place (struct GNUNET_SOCIAL_Home *home);
 
 
-/**
+/** 
  * Leave a home, visitors can stay.
  *
- * @param home home to leave (handle becomes invalid).
+ * After leaving, handling of incoming messages are left to other clients of 
the
+ * social service, and stops after the last client exits.
+ *
+ * @param home Home to leave (handle becomes invalid).
  */
 void
 GNUNET_SOCIAL_home_leave (struct GNUNET_SOCIAL_Home *home);
 
 
-/**
- * Destroy a home, all guests will be evicted.
+/** 
+ * Destroy a home, all guests will be ejected.
  *
- * @param home home to destroy
+ * @param home Home to destroy.
  */
 void
 GNUNET_SOCIAL_home_destroy (struct GNUNET_SOCIAL_Home *home);
 
 
-/**
+/** 
  * Join a place (home hosted by someone else).
  *
- * @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'),
+ * @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
+ * @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.
  */
 struct GNUNET_SOCIAL_Place *
 GNUNET_SOCIAL_place_join (const struct GNUNET_CONFIGURATION_Handle *cfg,
@@ -382,18 +405,17 @@
                          const void *join_msg);
 
 
-/**
- *
- */
 struct GNUNET_SOCIAL_WatchHandle;
 
-/**
+/** 
+ * Watch a place for changed objects.
+ *
+ * @param place Place to watch.
+ * @param object_filter Object prefix to match. if 
+ * @param state_cb 
+ * @param state_cb_cls 
  * 
- *
- * @param
- * @param
- * @param
- * @param
+ * @return 
  */
 struct GNUNET_SOCIAL_WatchHandle *
 GNUNET_SOCIAL_place_watch (struct GNUNET_SOCIAL_Place *place,
@@ -402,23 +424,20 @@
                           void *state_cb_cls);
 
 
-/**
- * 
- *
- * @param
- */
 void
 GNUNET_SOCIAL_place_watch_cancel (struct GNUNET_SOCIAL_WatchHandle *wh);
 
 
-/**
- *
- */
 struct GNUNET_SOCIAL_LookHandle;
 
-/**
+/** 
  * Look at all objects in the place.
  *
+ * @param place The place to look its objects at.
+ * @param state_cb Function to call for each object found.
+ * @param state_cb_cls Closure for callback function.
+ * 
+ * @return Handle that can be used to stop looking at objects.
  */
 struct GNUNET_SOCIAL_LookHandle *
 GNUNET_SOCIAL_place_look (struct GNUNET_SOCIAL_Place *place,
@@ -426,9 +445,15 @@
                          void *state_cb_cls);
 
 
-/**
+/** 
  * Look at matching objects in the place.
  *
+ * @param place The place to look its objects at.
+ * @param object_filter Only look at objects with names beginning with this 
filter value. 
+ * @param state_cb Function to call for each object found.
+ * @param state_cb_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 *place,
@@ -437,23 +462,21 @@
                              void *state_cb_cls);
 
 
-/**
- * 
- *
- * @param lh
+/** 
+ * Stop looking at objects.
  */
 void
 GNUNET_SOCIAL_place_look_cancel (struct GNUNET_SOCIAL_LookHandle *lh);
 
 
 
-/**
+/** 
  * Look at a particular object in 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
+ * @param place The place to look the object at.
+ * @param object_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.
  */
 const void *
 GNUNET_SOCIAL_place_look_at (struct GNUNET_SOCIAL_Place *place,
@@ -461,13 +484,16 @@
                             size_t *value_size);
 
 
-/**
+/** 
  * Frame the (next) talk by setting some variables for it.
  *
- * @param place
- * @param variable_name
- * @param value_size number of bytes in 'value'
- * @param value
+ * FIXME: use a TalkFrame struct instead that can be passed to
+ * place_talk, nym_talk and home_reject_entry.
+ *
+ * @param place Place to talk in.
+ * @param variable_name Name of variable to set.
+ * @param value_size Number of bytes in 'value'.
+ * @param value Value of variable.
  */
 void
 GNUNET_SOCIAL_place_frame_talk (struct GNUNET_SOCIAL_Place *place,
@@ -476,21 +502,21 @@
                                const void *value);
 
 
-/**
- *
+/** 
+ * A talk request.
  */
 struct GNUNET_SOCIAL_TalkRequest;
 
 
-/**
+/** 
  * Talk to the host of the 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'
+ * @param place Place where 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
+ *         otherwise handle to cancel the request.
  */
 struct GNUNET_SOCIAL_TalkRequest *
 GNUNET_SOCIAL_place_talk (struct GNUNET_SOCIAL_Place *place,
@@ -498,31 +524,52 @@
                          GNUNET_PSYC_OriginReadyNotify cb,
                          void *cb_cls);
 
+/** 
+ * Talk to a nym.
+ *
+ * FIXME: look up nym in GADS and talk to its place.
+ *
+ * @param nym Nym we want to talk to.
+ * @param method_name Method to invoke on the nym.
+ * @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.
+ */
+struct GNUNET_SOCIAL_TalkRequest *
+GNUNET_SOCIAL_nym_talk (struct GNUNET_SOCIAL_Nym *nym,
+                        const char *method_name,
+                        GNUNET_PSYC_OriginReadyNotify cb,
+                        void *cb_cls);
 
-/**
- * 
+
+/** 
+ * Cancel talking to the host of the place.
  *
- * @param tr
+ * @param tr Talk request to cancel.
  */
 void
 GNUNET_SOCIAL_place_talk_cancel (struct GNUNET_SOCIAL_TalkRequest *tr);
                
 
-/**
- *
+/** 
+ * A history lesson.
  */
 struct GNUNET_SOCIAL_HistoryLesson;
 
 
-/**
+/** 
+ * Learn about the history of a place.
  *
+ * Sends messages through the given slicer function where
+ * start_message_id <= message_id <= end_message_id.
  * 
- * @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 slicer Slicer to use to process history.
+ * @return Handle to abort history lesson, never NULL (multiple lessons
+ *        at the same time are allowed).
  */
 struct GNUNET_SOCIAL_HistoryLesson *
 GNUNET_SOCIAL_place_get_history (struct GNUNET_SOCIAL_Place *place,
@@ -531,26 +578,28 @@
                                 struct GNUNET_SOCIAL_Slicer *slicer);
 
 
-/**
- * Stop processing messages from the history lesson.  Must also be
- * called explicitly after all of the requested messages have been
+/** 
+ * Stop processing messages from the history lesson.
+ *
+ * Must also be called explicitly after all of the requested messages have been
  * received.
  *
- * @param hist history lesson to cancel
+ * @param hist History lesson to cancel.
  */
 void
 GNUNET_SOCIAL_place_get_history_cancel (struct GNUNET_SOCIAL_HistoryLesson 
*hist);
 
          
-/**
- * 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.
+/** 
+ * 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.
  *
- * @param place place to leave
+ * @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
+ *        to follow the conversation, GNUNET_NO to fully leave the place.
  */
 void
 GNUNET_SOCIAL_place_leave (struct GNUNET_SOCIAL_Place *place,




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