1/* vi: set sw=4 ts=4: */ 2/* 3 * public domain -- Dave 'Kill a Cop' Cinege <dcinege@psychosis.com> 4 * 5 * dutmp 6 * Takes utmp formated file on stdin and dumps it's contents 7 * out in colon delimited fields. Easy to 'cut' for shell based 8 * versions of 'who', 'last', etc. IP Addr is output in hex, 9 * little endian on x86. 10 * 11 * Modified to support all sorts of libcs by 12 * Erik Andersen <andersen@lineo.com> 13 */ 14 15#include <sys/types.h> 16#include <fcntl.h> 17 18#include <errno.h> 19#include <utmp.h> 20#include <stdlib.h> 21#include <unistd.h> 22#include "busybox.h" 23 24extern int dutmp_main(int argc, char **argv) 25{ 26 27 int file; 28 struct utmp ut; 29 30 if (argc<2) { 31 file = fileno(stdin); 32 } else if (*argv[1] == '-' ) { 33 show_usage(); 34 } else { 35 file = open(argv[1], O_RDONLY); 36 if (file < 0) { 37 perror_msg_and_die(io_error, argv[1]); 38 } 39 } 40 41/* Kludge around the fact that the binary format for utmp has changed. */ 42#if __GNU_LIBRARY__ < 5 || defined __UCLIBC__ 43 /* Linux libc5 */ 44 while (read(file, (void*)&ut, sizeof(struct utmp))) { 45 printf("%d|%d|%s|%s|%s|%s|%s|%lx\n", 46 ut.ut_type, ut.ut_pid, ut.ut_line, 47 ut.ut_id, ut.ut_user, ut.ut_host, 48 ctime(&(ut.ut_time)), 49 (long)ut.ut_addr); 50 } 51#else 52 /* Glibc, uClibc, etc. */ 53 while (read(file, (void*)&ut, sizeof(struct utmp))) { 54 printf("%d|%d|%s|%s|%s|%s|%d|%d|%ld|%ld|%ld|%x\n", 55 ut.ut_type, ut.ut_pid, ut.ut_line, 56 ut.ut_id, ut.ut_user, ut.ut_host, 57 ut.ut_exit.e_termination, ut.ut_exit.e_exit, 58 ut.ut_session, 59 ut.ut_tv.tv_sec, ut.ut_tv.tv_usec, 60 ut.ut_addr); 61 } 62#endif 63 return EXIT_SUCCESS; 64} 65