99 lines
3.2 KiB
C
99 lines
3.2 KiB
C
/*
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* uhub - A tiny ADC p2p connection hub
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* Copyright (C) 2007-2011, Jan Vidar Krey
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "uhub.h"
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struct command_base;
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struct hub_command
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{
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const char* message;
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char* prefix;
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size_t prefix_len;
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struct linked_list* args;
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};
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typedef int (*command_handler)(struct command_base*, struct hub_user* user, struct hub_command*);
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/**
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* Argument codes are used to automatically parse arguments
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* for a a hub command.
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*
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* n = nick name (must exist in hub session)
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* i = CID (must exist in hub)
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* a = (IP) address (must be a valid IPv4 or IPv6 address)
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* m = message (string)
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* p = password (string)
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* C = credentials (see auth_string_to_cred).
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* c = command (name of command)
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* N = number (integer)
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*
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* Prefix an argument with ? to make it optional.
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* NOTE; if an argument is optional then all following arguments must also be optional.
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*
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* Example:
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* "nia" means "nick cid ip"
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* "n?p" means "nick [password]" where password is optional.
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*
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*/
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struct command_handle
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{
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const char* prefix; /**<<< "Command prefix, for instance 'help' would be the prefix for the !help command." */
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size_t length; /**<<< "Length of the prefix" */
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const char* args; /**<<< "Argument codes (see above)" */
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enum auth_credentials cred; /**<<< "Minimum access level for the command" */
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command_handler handler; /**<<< "Function pointer for the command" */
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const char* description; /**<<< "Description for the command" */
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const char* command_origin; /**<<< "Name of module where the command is implemented." */
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};
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/**
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* Returns NULL on error, or handle
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*/
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extern struct command_base* command_initialize(struct hub_info* hub);
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extern void command_shutdown(struct command_base* cbase);
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/**
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* Add a new command to the command base.
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* Returns 1 on success, or 0 on error.
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*/
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extern int command_add(struct command_base*, struct command_handle*);
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/**
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* Remove a command from the command base.
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* Returns 1 on success, or 0 on error.
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*/
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extern int command_del(struct command_base*, struct command_handle*);
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/**
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* Returns 1 if a command is available to a user (user has access to run it.)
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*/
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extern int command_is_available(struct command_handle*, struct hub_user* user);
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/**
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* Dispatch a message and forward it as a command.
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* Returns 1 if the message should be forwarded as a chat message, or 0 if
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* it is supposed to be handled internally in the dispatcher.
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*
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* This will break the message down into a struct hub_command and invoke the command handler
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* for that command if the sufficient access credentials are met.
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*/
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extern int command_invoke(struct command_base*, struct hub_user* user, const char* message);
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