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/*
* Copyright (c) 2006-2014 Erik Ekman <yarrick@kryo.se>,
* 2006-2009 Bjorn Andersson <flex@kryo.se>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef __USER_H__
#define __USER_H__
#define USERS 16
#define OUTPACKETQ_LEN 4 /* Note: 16 users * 1 packet = 1MB */
/* Undefine to have no queue for packets coming in from tun device, which may
lead to massive dropping in multi-user situations with high traffic. */
#define DNSCACHE_LEN 4
/* Undefine to disable. Should be less than 18; also see comments in iodined.c */
#define QMEMPING_LEN 30
/* Max advisable: 64k/2 = 32000. Total mem usage: QMEMPING_LEN * USERS * 6 bytes */
#define QMEMDATA_LEN 15
/* Max advisable: 36/2 = 18. Total mem usage: QMEMDATA_LEN * USERS * 6 bytes */
struct tun_user {
char id;
int active;
int authenticated;
int authenticated_raw;
int disabled;
time_t last_pkt;
int seed;
in_addr_t tun_ip;
struct in_addr host;
struct query q;
struct query q_sendrealsoon;
int q_sendrealsoon_new;
struct packet inpacket;
struct packet outpacket;
int outfragresent;
struct encoder *encoder;
char downenc;
int out_acked_seqno;
int out_acked_fragment;
int fragsize;
enum connection conn;
int lazy;
unsigned char qmemping_cmc[QMEMPING_LEN * 4];
unsigned short qmemping_type[QMEMPING_LEN];
int qmemping_lastfilled;
unsigned char qmemdata_cmc[QMEMDATA_LEN * 4];
unsigned short qmemdata_type[QMEMDATA_LEN];
int qmemdata_lastfilled;
#ifdef OUTPACKETQ_LEN
struct packet outpacketq[OUTPACKETQ_LEN];
int outpacketq_nexttouse;
int outpacketq_filled;
#endif
#ifdef DNSCACHE_LEN
struct query dnscache_q[DNSCACHE_LEN];
char dnscache_answer[DNSCACHE_LEN][4096];
int dnscache_answerlen[DNSCACHE_LEN];
int dnscache_lastfilled;
#endif
};
extern struct tun_user *users;
int init_users(in_addr_t, int);
const char* users_get_first_ip();
int users_waiting_on_reply();
int find_user_by_ip(uint32_t);
int all_users_waiting_to_send();
int find_available_user();
void user_switch_codec(int userid, struct encoder *enc);
void user_set_conn_type(int userid, enum connection c);
#endif
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