1 files changed, 90 insertions, 0 deletions
diff --git a/include/ipmitool/ipmi_time.h b/include/ipmitool/ipmi_time.h
new file mode 100644
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+++ b/include/ipmitool/ipmi_time.h
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+/*
+ * Copyright (c) 2018 Alexander Amelkin.  All Rights Reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * Redistribution of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * Redistribution 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.
+ *
+ * Neither the name of the copyright holder, nor the names of
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * This software is provided "AS IS," without a warranty of any kind.
+ * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
+ * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED.
+ * THE COPYRIGHT HOLDER AND ITS LICENSORS SHALL NOT BE LIABLE
+ * FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
+ * OR DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.  IN NO EVENT WILL
+ * THE COPYRIGHT HOLDER OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE,
+ * PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL,
+ * INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE
+ * THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS
+ * SOFTWARE, EVEN IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGES.
+ */
+
+#pragma once
+
+#include <time.h>
+#include <stdbool.h>
+
+extern bool time_in_utc;
+
+/* Special values according to IPMI v2.0, rev. 1.1, section 37.1 */
+#define IPMI_TIME_UNSPECIFIED 0xFFFFFFFFu
+#define IPMI_TIME_INIT_DONE 0x20000000u
+
+#define SECONDS_A_DAY (24 * 60 * 60)
+
+/*
+ * Check whether the timestamp is in seconds since Epoch or since
+ * the system startup.
+ */
+static inline bool ipmi_timestamp_is_special(time_t ts)
+{
+	return (ts < IPMI_TIME_INIT_DONE);
+}
+
+/*
+ * Check whether the timestamp is valid at all
+ */
+static inline bool ipmi_timestamp_is_valid(time_t ts)
+{
+	return (ts != IPMI_TIME_UNSPECIFIED);
+}
+
+/*
+ * Just 26 characters are required for asctime_r(), plus timezone info.
+ * However just to be safe locale-wise and assuming that in no locale
+ * the date/time string exceeds the 'standard' legacy terminal width,
+ * the buffer size is set here to 80.
+ */
+#define IPMI_ASCTIME_SZ 80
+typedef char ipmi_datebuf_t[IPMI_ASCTIME_SZ];
+
+/*
+ * These are ipmitool-specific versions that take
+ * in account the command line options
+ */
+char *ipmi_asctime_r(time_t stamp, ipmi_datebuf_t outbuf);
+size_t ipmi_strftime(char *s, size_t max, const char *format, time_t stamp)
+       __attribute__((format(strftime, 3, 0)));
+
+/* These return pointers to static arrays and aren't thread safe */
+char *ipmi_timestamp_fmt(uint32_t stamp, const char *fmt)
+      __attribute__((format(strftime, 2, 0)));
+char *ipmi_timestamp_string(uint32_t stamp); /* Day Mon DD HH:MM:SS YYYY ZZZ */
+char *ipmi_timestamp_numeric(uint32_t stamp); /* MM/DD/YYYY HH:MM:SS ZZZ */
+char *ipmi_timestamp_date(uint32_t stamp); /* MM/DD/YYYY ZZZ */
+char *ipmi_timestamp_time(uint32_t stamp); /* HH:MM:SS ZZZ */
+
+/* Subtract the UTC offset from local time_t */
+time_t ipmi_localtime2utc(time_t local);