Ansify some function definitions that were previously overlooked.
[dragonfly.git] / libexec / ftpd / logwtmp.c
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1/*
2 * Copyright (c) 1988, 1993
3 * The Regents of the University of California. 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 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
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32 *
33 * @(#)logwtmp.c 8.1 (Berkeley) 6/4/93
34 * $FreeBSD: src/libexec/ftpd/logwtmp.c,v 1.9.2.2 2002/08/08 12:24:54 yar Exp $
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35 */
36
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37#include <sys/types.h>
38#include <sys/stat.h>
39#include <netinet/in.h>
40#include <arpa/inet.h>
41#include <sys/socket.h>
42
43#include <fcntl.h>
44#include <time.h>
45#include <netdb.h>
46#include <utmp.h>
47#include <unistd.h>
48#include <stdio.h>
49#include <string.h>
50#include <libutil.h>
51#include "extern.h"
52
53static int fd = -1;
54
55/*
56 * Modified version of logwtmp that holds wtmp file open
57 * after first call, for use with ftp (which may chroot
58 * after login, but before logout).
59 */
60void
89a89091 61ftpd_logwtmp(char *line, char *name, struct sockaddr *addr)
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62{
63 struct utmp ut;
64 struct stat buf;
65 char host[UT_HOSTSIZE];
66
67 if (addr == NULL)
68 host[0] = '\0';
69 else
70 realhostname_sa(host, sizeof(host), addr, addr->sa_len);
71
72 if (fd < 0 && (fd = open(_PATH_WTMP, O_WRONLY|O_APPEND, 0)) < 0)
73 return;
74 if (fstat(fd, &buf) == 0) {
75 (void)strncpy(ut.ut_line, line, sizeof(ut.ut_line));
76 (void)strncpy(ut.ut_name, name, sizeof(ut.ut_name));
77 (void)strncpy(ut.ut_host, host, sizeof(ut.ut_host));
78 (void)time(&ut.ut_time);
79 if (write(fd, &ut, sizeof(struct utmp)) !=
80 sizeof(struct utmp))
81 (void)ftruncate(fd, buf.st_size);
82 }
83}