1 /*
2 * Copyright (c) 1983, 1988 Regents of the University of California.
3 * All rights reserved.
4 *
5 * %sccs.include.redist.c%
6 */
7
8 #ifndef lint
9 char copyright[] =
10 "@(#) Copyright (c) 1983, 1988 Regents of the University of California.\n\
11 All rights reserved.\n";
12 #endif /* not lint */
13
14 #ifndef lint
15 static char sccsid[] = "@(#)implogd.c 5.10 (Berkeley) 03/02/91";
16 #endif /* not lint */
17
18 #include <sys/param.h>
19 #include <sys/time.h>
20 #include <sys/socket.h>
21 #include <sys/syslog.h>
22 #include <sys/file.h>
23
24 #include <net/if.h>
25
26 #include <netinet/in.h>
27 #include <netimp/if_imp.h>
28
29 #include <sgtty.h>
30 #include "pathnames.h"
31
32 /*
33 * Socket address, internet style, with
34 * unused space taken by timestamp and packet
35 * size.
36 */
37 struct sockstamp {
38 short sin_family;
39 u_short sin_port;
40 struct in_addr sin_addr;
41 time_t sin_time;
42 int sin_len;
43 };
44
main()45 main()
46 {
47 register int len, log, s;
48 struct sockstamp from;
49 int fromlen;
50 u_char request[1024];
51 time_t time();
52
53 openlog("implogd", LOG_PID|LOG_ODELAY|LOG_PERROR, LOG_DAEMON);
54 log = open(_PATH_IMPLOG, O_CREAT|O_WRONLY|O_APPEND, 0644);
55 if (log < 0) {
56 syslog(LOG_ERR, "%s: %m\n", _PATH_IMPLOG);
57 exit(1);
58 }
59 from.sin_time = time((time_t *)NULL);
60 from.sin_len = sizeof(time_t);
61 (void)write(log, (char *)&from, sizeof(from));
62 if ((s = socket(AF_IMPLINK, SOCK_RAW, 0)) < 0) {
63 syslog(LOG_ERR, "socket: %m\n");
64 exit(1);
65 }
66 #ifndef DEBUG
67 {
68 register int i, tt;
69
70 if (fork())
71 exit(0);
72 for (i = 0; i < 10; i++)
73 if (i != log && i != s)
74 (void) close(i);
75 (void) open("/", O_RDONLY, 0);
76 (void) dup2(0, 1);
77 (void) dup2(0, 2);
78 tt = open(_PATH_TTY, O_RDWR, 0);
79 if (tt > 0) {
80 ioctl(tt, TIOCNOTTY, 0);
81 (void)close(tt);
82 }
83 }
84 #endif
85 for (fromlen = sizeof(from);;) {
86 len = recvfrom(s, request, sizeof(request), 0,
87 (struct sockaddr *)&from, &fromlen);
88 if (len < 0) {
89 syslog(LOG_ERR, "recvfrom: %m\n");
90 continue;
91 }
92 if (len == 0 || len > IMPMTU) /* sanity */
93 continue;
94 from.sin_len = len;
95 from.sin_time = time((time_t *)NULL);
96 (void)write(log, (char *)&from, sizeof(from));
97 (void)write(log, request, len);
98 }
99 /*NOTREACHED*/
100 }
101