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