defs.c revision 32021 
1/*-
2 * Copyright (c) 1997 Brian Somers <brian@Awfulhak.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 *	$Id: defs.c,v 1.8 1997/12/24 09:28:56 brian Exp $
27 */
28
29#include <sys/param.h>
30#include <netinet/in.h>
31
32#include <errno.h>
33#include <stdio.h>
34#include <stdlib.h>
35#include <string.h>
36#include <time.h>
37#include <unistd.h>
38
39#include "defs.h"
40#include "command.h"
41#include "mbuf.h"
42#include "log.h"
43#include "loadalias.h"
44#include "vars.h"
45
46int mode = MODE_INTER;
47int BGFiledes[2] = { -1, -1 };
48int modem = -1;
49int tun_in = -1;
50int tun_out = -1;
51int netfd = -1;
52
53static char dstsystem[50];
54
55void
56SetLabel(const char *label)
57{
58  if (label)
59    strncpy(dstsystem, label, sizeof dstsystem - 1);
60  else
61    *dstsystem = '\0';
62}
63
64const char *
65GetLabel()
66{
67  return *dstsystem ? dstsystem : NULL;
68}
69
70void
71randinit()
72{
73#ifdef __FreeBSD__
74  static int initdone;
75
76  if (!initdone) {
77    initdone = 1;
78    srandomdev();
79  }
80#else
81  srandom(time(NULL)^getpid());
82#endif
83}
84
85
86int
87GetShortHost()
88{
89  char *p;
90
91  if (gethostname(VarShortHost, sizeof VarShortHost)) {
92    LogPrintf(LogERROR, "GetShortHost: gethostbyname: %s\n", strerror(errno));
93    return 0;
94  }
95
96  if ((p = strchr(VarShortHost, '.')))
97    *p = '\0';
98
99  return 1;
100}
101
102void
103DropClient(int verbose)
104{
105  FILE *oVarTerm;
106
107  if (VarTerm && !(mode & MODE_INTER)) {
108    oVarTerm = VarTerm;
109    VarTerm = 0;
110    if (oVarTerm)
111      fclose(oVarTerm);
112    close(netfd);
113    netfd = -1;
114    if (verbose)
115      LogPrintf(LogPHASE, "Client connection dropped.\n");
116  }
117}
118