Reorganized sources slightly.

src/core/usermanager.h

@@ -0,0 +1,117 @@
+/*
+ * uhub - A tiny ADC p2p connection hub
+ * Copyright (C) 2007-2009, Jan Vidar Krey
+ *
+ * This program 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 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef HAVE_UHUB_USER_MANAGER_H
+#define HAVE_UHUB_USER_MANAGER_H
+
+struct user_manager
+{
+	size_t count;                   /**<< "Number of all fully connected and logged in users" */
+	size_t count_peak;              /**<< "Peak number of users" */
+	sid_t free_sid;                 /**<< "The next available SID." */
+	uint64_t shared_size;           /**<< "The total number of shared bytes among fully connected users." */
+	uint64_t shared_files;          /**<< "The total number of shared files among fully connected users." */
+	struct linked_list* list;       /**<< "Contains all users" */
+};
+
+/**
+ * Initializes the user manager.
+ * @return 0 on success, or -1 if error (out of memory).
+ */
+extern int uman_init(struct hub_info* hub);
+
+/**
+ * Shuts down the user manager.
+ * All users will be disconnected and deleted as part of this.
+ *
+ * @return 0 on success, or -1 in an error occured (hub is invalid).
+ */
+extern int uman_shutdown(struct hub_info* hub);
+
+/**
+ * Generate statistics for logfiles.
+ */
+extern void uman_update_stats(struct hub_info* hub);
+extern void uman_print_stats(struct hub_info* hub);
+
+/**
+ * Add a user to the user manager.
+ *
+ * @param hub The hub to add the user to
+ * @param user The user to be added to the hub.
+ */
+extern int uman_add(struct hub_info* hub, struct user* user);
+
+/**
+ * Remove a user from the user manager.
+ * This user is connected, and will be moved to the leaving queue, pending
+ * all messages in the message queue, and resource cleanup.
+ *
+ * @return 0 if successfully removed, -1 if error.
+ */
+extern int uman_remove(struct hub_info* hub, struct user* user);
+
+/**
+ * Returns and allocates an unused session ID (SID).
+ */
+extern sid_t uman_get_free_sid(struct hub_info* hub);
+
+/**
+ * Lookup a user based on the session ID (SID).
+ *
+ * NOTE: This function will only search connected users, which means
+ * that SIDs assigned to users who are not yet completely logged in,
+ * or are in the process of being disconnected will result in this 
+ * function returning NULL even though the sid is not freely available.
+ *
+ * FIXME: Is that really safe / sensible ?
+ * - Makes sense from a message routing point of view.
+ *
+ * @return a user if found, or NULL if not found
+ */
+extern struct user* uman_get_user_by_sid(struct hub_info* hub, sid_t sid);
+
+/**
+ * Lookup a user based on the client ID (CID).
+ * @return a user if found, or NULL if not found
+ */
+extern struct user* uman_get_user_by_cid(struct hub_info* hub, const char* cid);
+
+/**
+ * Lookup a user based on the nick name.
+ * @return a user if found, or NULL if not found
+ */
+extern struct user* uman_get_user_by_nick(struct hub_info* hub, const char* nick);
+
+/**
+ * Send the user list of connected clients to 'user'.
+ * Usually part of the login process.
+ *
+ * @return 1 if sending the user list succeeded, 0 otherwise.
+ */
+extern int uman_send_user_list(struct hub_info* hub, struct user* user);
+
+/**
+ * Send a quit message to all connected users when 'user' is
+ * leaving the hub (for whatever reason).
+ */
+extern void uman_send_quit_message(struct hub_info* hub, struct user* user);
+
+
+#endif /* HAVE_UHUB_USER_MANAGER_H */