/* vi: set sw=4 ts=4: *//* * public domain -- Dave 'Kill a Cop' Cinege <dcinege@psychosis.com> *  * dutmp * Takes utmp formated file on stdin and dumps it's contents  * out in colon delimited fields. Easy to 'cut' for shell based  * versions of 'who', 'last', etc. IP Addr is output in hex,  * little endian on x86. *  * Modified to support all sorts of libcs by  * Erik Andersen <andersen@codepoet.org> */#include <sys/types.h>#include <fcntl.h>#include <errno.h>#include <utmp.h>#include <stdlib.h>#include <unistd.h>#include <time.h>#include "busybox.h"extern int dutmp_main(int argc, char **argv){	int file;	struct utmp ut;	if (argc<2) {		file = fileno(stdin);	} else if (*argv[1] == '-' ) {		show_usage();	} else  {		file = open(argv[1], O_RDONLY);		if (file < 0) {			perror_msg_and_die(io_error, argv[1]);		}	}/* Kludge around the fact that the binary format for utmp has changed. */#if __GNU_LIBRARY__ < 5	/* Linux libc5 */	while (read(file, (void*)&ut, sizeof(struct utmp))) {		printf("%d|%d|%s|%s|%s|%s|%s|%lx\n",				ut.ut_type, ut.ut_pid, ut.ut_line,				ut.ut_id, ut.ut_user, ut.ut_host,				ctime(&(ut.ut_time)), 				(long)ut.ut_addr);	}#else	/* Glibc, uClibc, etc. */	while (read(file, (void*)&ut, sizeof(struct utmp))) {		printf("%d|%d|%s|%s|%s|%s|%d|%d|%ld|%ld|%ld|%x\n",		ut.ut_type, ut.ut_pid, ut.ut_line,		ut.ut_id, ut.ut_user,	ut.ut_host,		ut.ut_exit.e_termination, ut.ut_exit.e_exit,		ut.ut_session,		ut.ut_tv.tv_sec, ut.ut_tv.tv_usec,		ut.ut_addr);	}#endif	return EXIT_SUCCESS;}