1 /* 2 * Copyright (c) 1983 Regents of the University of California. 3 * All rights reserved. The Berkeley software License Agreement 4 * specifies the terms and conditions for redistribution. 5 */ 6 7 #ifndef lint 8 char copyright[] = 9 "@(#) Copyright (c) 1983 Regents of the University of California.\n\ 10 All rights reserved.\n"; 11 #endif not lint 12 13 #ifndef lint 14 static char sccsid[] = "@(#)implogd.c 5.2 (Berkeley) 05/05/86"; 15 #endif not lint 16 17 #include <sgtty.h> 18 19 #include <sys/time.h> 20 #include <sys/param.h> 21 #include <sys/socket.h> 22 #include <sys/file.h> 23 24 #include <netinet/in.h> 25 #include <netimp/if_imp.h> 26 27 #define LOGFILE "/usr/adm/implog" 28 29 u_char request[1024]; 30 int marktime(); 31 int options; 32 extern int errno; 33 int log; 34 35 /* 36 * Socket address, internet style, with 37 * unused space taken by timestamp and packet 38 * size. 39 */ 40 struct sockstamp { 41 short sin_family; 42 u_short sin_port; 43 struct in_addr sin_addr; 44 time_t sin_time; 45 int sin_len; 46 }; 47 48 main(argc, argv) 49 char *argv[]; 50 { 51 int s; 52 time_t t; 53 struct sockstamp from; 54 55 argc--, argv++; 56 if (argc > 0 && !strcmp(argv[0], "-d")) 57 options |= SO_DEBUG; 58 log = open(LOGFILE, O_CREAT|O_WRONLY|O_APPEND, 0644); 59 if (log < 0) { 60 perror("implogd: open"); 61 exit(1); 62 } 63 from.sin_time = time(0); 64 from.sin_len = sizeof (time_t); 65 write(log, (char *)&from, sizeof (from)); 66 if ((s = socket(AF_IMPLINK, SOCK_RAW, 0)) < 0) { 67 perror("implogd: socket"); 68 exit(5); 69 } 70 #ifndef DEBUG 71 if (fork()) 72 exit(0); 73 for (s = 0; s < 10; s++) 74 (void) close(t); 75 (void) open("/", 0); 76 (void) dup2(0, 1); 77 (void) dup2(0, 2); 78 { int tt = open("/dev/tty", 2); 79 if (tt > 0) { 80 ioctl(tt, TIOCNOTTY, 0); 81 close(tt); 82 } 83 } 84 #endif 85 for (;;) { 86 int fromlen = sizeof (from), len; 87 88 len = recvfrom(s, request, sizeof (request), 0, 89 &from, &fromlen); 90 if (len < 0) { 91 perror("implogd: recvfrom"); 92 continue; 93 } 94 if (len == 0 || len > IMPMTU) /* sanity */ 95 continue; 96 from.sin_len = len; 97 from.sin_time = time(0); 98 write(log, (char *)&from, sizeof (from)); 99 write(log, request, len); 100 } 101 /*NOTREACHED*/ 102 } 103