1 files changed, 285 insertions, 0 deletions
diff --git a/downtimes.c b/downtimes.c
new file mode 100644
index 0000000..7a35eb8
--- /dev/null
+++ b/downtimes.c
@@ -0,0 +1,285 @@
+/*-
+ * Copyright (c) 2009-2013 EPIPE Communications. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are
+ * those of the authors and should not be interpreted as representing official
+ * policies, either expressed or implied, of EPIPE Communications.
+ *
+ *
+ * Software web site:
+ *   http://dist.epipe.com/downtimed/
+ *
+ * Author contact information:
+ *   opensource@epipe.com
+ */
+
+/* Include config.h in case we use autoconf. */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+/* Standard includes that we need */
+
+#include <sys/file.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/types.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <inttypes.h>
+
+#ifdef HAVE_PATHS_H
+#include <paths.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysexits.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "downtimedb.h"
+
+/* Some global defines */
+
+#define	PROGNAME "downtimes"
+
+/* PACKAGE_VERSION is defined by autoconf, if used. */
+#ifdef PACKAGE_VERSION
+#define	PROGVERSION PACKAGE_VERSION
+#else
+#define	PROGVERSION "0.0undef"
+#endif
+
+/* Function prototypes */
+
+int		main(int, char *[]);
+static void	report(int64_t, int, int64_t);
+static void	version(void);
+static void	usage(void);
+static void	parseargs(int, char *[]);
+
+/* Command line arguments with their defaults */
+
+static long	cf_sleep = 0; /* adjust crash time according to sleep value */
+static char *	cf_downtimedbfile = PATH_DOWNTIMEDBFILE;
+static long	cf_n = -1;         /* number of downtime records to display */
+static char *	cf_timefmt = FMT_DATETIME;
+static int	cf_utc = 0;                  /* set to display times in UTC */
+
+/*
+ * downtimes: display system downtime records made by downtimed(8)
+ */
+
+int
+main(int argc, char *argv[])
+{
+	struct downtimedb dbent;
+	struct stat sb;
+	int64_t tdown, tadjust;
+	int fd, ret, crashed;
+
+	/* parse command line arguments */
+	parseargs(argc, argv);
+
+	if ((fd = open(cf_downtimedbfile, O_RDONLY)) < 0) {
+		fputs("Maybe the system has not been down yet?\n", stderr);
+		err(EX_NOINPUT, "can not open %s", cf_downtimedbfile);
+	}
+
+	if (fstat(fd, &sb) < 0)
+		err(EX_NOINPUT, "can not stat %s", cf_downtimedbfile);
+
+	if (sb.st_size % sizeof(struct downtimedb) != 0)
+		errx(EX_DATAERR, "%s is corrupted", cf_downtimedbfile);
+
+	if ((cf_n == -1)
+	    || (cf_n > sb.st_size / sizeof(struct downtimedb) / 2))
+		cf_n = sb.st_size / sizeof(struct downtimedb) / 2;
+
+	if (lseek(fd, sb.st_size - (cf_n * sizeof(struct downtimedb) * 2),
+	    SEEK_SET) < 0)
+		err(EX_DATAERR, "can not seek %s", cf_downtimedbfile);
+
+	tdown = 0;
+	tadjust = cf_sleep / 2;
+
+	while ((ret = downtimedb_read(fd, &dbent)) > 0) {
+		switch (dbent.what) {
+		case DOWNTIMEDB_WHAT_SHUTDOWN:
+			if (tdown != 0)
+				report(dbent.when, 0, 0);
+			tdown = dbent.when;
+			crashed = 0;
+			break;
+		case DOWNTIMEDB_WHAT_CRASH:
+			if (tdown != 0)
+				report(dbent.when + tadjust, 1, 0);
+			tdown = dbent.when;
+			crashed = 1;
+			break;
+		case DOWNTIMEDB_WHAT_UP:
+			report(crashed ? tdown + tadjust : tdown,
+			    crashed, dbent.when);
+			tdown = 0;
+			break;
+		case DOWNTIMEDB_WHAT_NONE:
+		default:
+			break;
+		}
+	}
+
+	if (tdown != 0)
+		report(tdown, crashed, 0);
+
+	if (ret < 0)
+		err(EX_DATAERR, "error reading %s", cf_downtimedbfile);
+
+	close(fd);
+	exit(EX_OK);
+}
+
+/* Output one line of downtime report */
+
+static void
+report(int64_t td, int crashed, int64_t tu)
+{
+	printf("%s %s -> ", crashed ? "crash" : "down ", 
+	    timestr_abs((time_t) td, cf_timefmt, cf_utc));
+
+	/* Note that the printf() above and below is intentionally split
+	   into two parts because timestr_abs() clobbers the returned
+	   static string on each call. */
+
+	printf("up %s ", timestr_abs((time_t) tu, cf_timefmt, cf_utc));
+
+	/* timestr_int() returns string representing a relative time (time
+	   period) such as 21+06:11:38 or 06:11:38 */
+
+	if (tu != 0 && td != 0)
+		printf("= %11s (%"PRIu64" s)\n",
+		    timestr_int((time_t)(tu - td)), tu - td);
+	else
+		printf("= %11s (? s)\n", "unknown");
+}
+
+/* Usage help & exit */
+
+static void
+usage()
+{
+
+	fputs("usage: " PROGNAME " [-v] [-d downtimedbfile] [-n num] "
+	    "[-s sleep] [-u]\n", stderr);
+	exit(EX_USAGE);
+}
+
+/* Output version information, default settings & exit */
+
+static void
+version()
+{
+
+	puts(PROGNAME " " PROGVERSION " - display system downtime records "
+	    "made by downtimed(8)\n");
+
+	puts("Copyright (c) 2009-2013 EPIPE Communications. "
+	    "All rights reserved.");
+	puts("This software is licensed under the terms and conditions of the "
+	    "FreeBSD");
+	puts("License which is also known as the Simplified BSD License. You "
+	    "should have ");
+	puts("received a copy of that license along with this software.\n");
+
+	puts("Default settings:");
+	printf("  downtimedbfile = %s\n", cf_downtimedbfile);
+	printf("  num = %ld\n", cf_n);
+	printf("  sleep = %ld\n", cf_sleep);
+	printf("  timefmt = %s\n", cf_timefmt);
+	printf("  utc = %d\n", cf_utc);
+
+#ifdef PACKAGE_URL
+	puts("\nSee the following web site for more information and updates:");
+	puts("  " PACKAGE_URL "\n");
+#endif
+	exit(EX_OK);
+}
+
+/* Handle command line arguments */
+
+static void
+parseargs(int argc, char *argv[])
+{
+	int c;
+	char *p;
+
+	if (strlen(argv[0]) > 0 && argv[0][strlen(argv[0])-1] != 's')
+		cf_n = 1;
+
+	while ((c = getopt(argc, argv, "d:f:n:s:uvh?")) != -1) {
+		switch (c) {
+		case 'd':
+			cf_downtimedbfile = optarg;
+			break;
+		case 'f':
+			cf_timefmt = optarg;
+			break;
+		case 'n':
+			p = NULL;
+			errno = 0;
+			cf_n = strtol(optarg, &p, 10);
+			if ((p != NULL && *p != '\0') || errno != 0)
+				errx(EX_USAGE, "-n argument is not a number");
+			break;
+		case 's':
+			p = NULL;
+			errno = 0;
+			cf_sleep = strtol(optarg, &p, 10);
+			if ((p != NULL && *p != '\0') || errno != 0)
+				errx(EX_USAGE, "-s argument is not a number");
+			break;
+		case 'u':
+			cf_utc = 1;
+			break;
+		case 'v':
+			version();
+			/* NOTREACHED */
+			break;
+		case 'h':
+		case '?':
+		default:
+			usage();
+			/* NOTREACHED */
+			break;
+		}
+	}
+	if (argc != optind)
+		usage();
+}
+
+/* eof */