mirror of
https://github.com/yarrick/iodine.git
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119 lines
2.4 KiB
C
119 lines
2.4 KiB
C
/*
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* Copyright (c) 2006-2007 Bjorn Andersson <flex@kryo.se>, Erik Ekman <yarrick@kryo.se>
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*
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* Permission to use, copy, modify, and 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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#include <string.h>
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#include <stdio.h>
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#include <time.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include "common.h"
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#include "encoding.h"
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#include "user.h"
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struct user users[USERS];
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void
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init_users(in_addr_t my_ip)
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{
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int i;
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char newip[16];
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memset(users, 0, USERS * sizeof(struct user));
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for (i = 0; i < USERS; i++) {
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users[i].id = i;
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snprintf(newip, sizeof(newip), "0.0.0.%d", i + 1);
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users[i].tun_ip = my_ip + inet_addr(newip);;
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users[i].inpacket.len = 0;
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users[i].inpacket.offset = 0;
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users[i].outpacket.len = 0;
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users[i].q.id = 0;
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}
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}
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int
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users_waiting_on_reply()
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{
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int ret;
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int i;
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ret = 0;
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for (i = 0; i < USERS; i++) {
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if (users[i].active && users[i].last_pkt + 60 > time(NULL) &&
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users[i].q.id != 0) {
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ret++;
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}
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}
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return ret;
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}
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int
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find_user_by_ip(uint32_t ip)
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{
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int ret;
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int i;
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ret = -1;
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for (i = 0; i < USERS; i++) {
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if (users[i].active && users[i].last_pkt + 60 > time(NULL) &&
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ip == users[i].tun_ip) {
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ret = i;
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break;
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}
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}
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return ret;
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}
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int
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all_users_waiting_to_send()
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{
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time_t now;
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int ret;
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int i;
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ret = 1;
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now = time(NULL);
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for (i = 0; i < USERS; i++) {
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if (users[i].active && users[i].last_pkt + 60 > now &&
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users[i].outpacket.len == 0) {
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ret = 0;
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break;
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}
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}
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return ret;
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}
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int
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find_available_user()
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{
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int ret = -1;
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int i;
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for (i = 0; i < USERS; i++) {
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/* Not used at all or not used in one minute */
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if (!users[i].active || users[i].last_pkt + 60 < time(NULL)) {
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users[i].active = 1;
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users[i].last_pkt = time(NULL);
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ret = i;
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break;
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}
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}
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return ret;
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}
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