netsukuku/src/accept.h
Alexander von Gluck IV e264723db2 all: Automatic style cleanup, KnR. No functional change.
* Style varied wildly between files and within files.
* find . -name "*.c" -exec indent {} -ut -ts4 -kr -psl \;
* find . -name "*.h" -exec indent {} -ut -ts4 -kr -psl \;
2014-09-17 07:41:24 -05:00

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2.7 KiB
C

/* This file is part of Netsukuku
* (c) Copyright 2004 Andrea Lo Pumo aka AlpT <alpt@freaknet.org>
*
* This source code 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 2 of the License,
* or (at your option) any later version.
*
* This source code 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.
* Please refer to the GNU Public License for more details.
*
* You should have received a copy of the GNU Public License along with
* this source code; if not, write to:
* Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef ACCEPT_H
#define ACCEPT_H
#define MAX_CONNECTIONS 512
#define MAX_ACCEPTS 16
#define FREE_ACCEPT_TIME 4 /*in seconds */
/*
* This struct keep tracks of single connection to the server.
* The thread_daemon who handle the connection knows the connection
* position in the accept_tbl.
*/
struct accept_table {
inet_prefix ip; /*Ip of the node connected */
unsigned char accepts; /*Number of connection from this node */
pid_t *pid; /*The pid of each child that have accepted the conn */
unsigned char *closed; /*Each element of this array is 1 or 0. It indicates if the connection has
been closed */
time_t *acp_t; /*The time when the connection was accepted. The "accepts" counter
will decrement when one of the acp_t+FREE_ACCEPT_TIME will
be <= current_time AND (the relative pid will be non existent OR
the relative closed element will be == 1)
*/
struct request_tbl rqtbl; /*The request table */
};
/* This struct keeps all the info regarding each node connected */
struct accept_table *accept_tbl;
/*
* accept_idx is the position of the accept_tbl of a thread.
* accept_sidx is the second index, it is used for example in pid[accept_sidx]
* note: this var are used only in the child and the child doesn't need to modify them!
*/
int accept_idx, accept_sidx;
pthread_mutex_t mtx_acpt_idx, mtx_acpt_sidx;
int update_accept_tbl_mutex;
int max_connections, max_accepts_per_host, free_accept_time;
void init_accept_tbl(int startups, int accepts, int time);
void destroy_accept_tbl(void);
void update_accept_tbl(void);
int find_ip_acpt(inet_prefix ip);
int find_first_free(void);
int is_ip_acpt_free(inet_prefix ip, int *index);
int find_free_acp_t(int idx);
int new_accept(int idx, inet_prefix ip);
int add_accept(inet_prefix ip, int replace);
void del_accept(int idx, int *sidx);
int close_accept(int idx, int sidx);
void add_accept_pid(pid_t pid, int idx, int sidx);
#endif /*ACCEPT_H */