server: Restrict is_online to only query users you know about

1 files changed, 1 insertions, 0 deletions

diff --git a/db.h b/db.h
index 73d275a..8c545ad 100644
--- a/db.h
+++ b/db.h
@@ -59,6 +59,7 @@ i64 db_find_user(const char *name);  // -1 if not found
 struct db_strings_list db_user_tokens(i64 userid);
 bool db_add_token(i64 userid,const char *token);
 bool db_delete_token(i64 userid,const char *token);
+bool db_user_knows_user(i64 userid1,i64 userid2);  // both users have a common room
 
 i64 db_create_message(i64 roomid,i64 userid,i64 timestamp,i64 replyid,const char *message);  // returns msgid
 struct db_message_list db_get_messages(i64 roomid,i64 count);  // gets latest `count` messages in rev. chron. order