1 files changed, 113 insertions, 0 deletions
diff --git a/src/global/conv_time.c b/src/global/conv_time.c
new file mode 100644
index 0000000..78a40b5
--- /dev/null
+++ b/src/global/conv_time.c
@@ -0,0 +1,113 @@
+/*++
+/* NAME
+/*	conv_time 3
+/* SUMMARY
+/*	time value conversion
+/* SYNOPSIS
+/*	#include <conv_time.h>
+/*
+/*	int	conv_time(strval, timval, def_unit);
+/*	const char *strval;
+/*	int	*timval;
+/*	int	def_unit;
+/* DESCRIPTION
+/*	conv_time() converts a numerical time value with optional
+/*	one-letter suffix that specifies an explicit time unit: s
+/*	(seconds), m (minutes), h (hours), d (days) or w (weeks).
+/*	Internally, time is represented in seconds.
+/*
+/*	Arguments:
+/* .IP strval
+/*	Input value.
+/* .IP timval
+/*	Result pointer.
+/* .IP def_unit
+/*	The default time unit suffix character.
+/* DIAGNOSTICS
+/*	The result value is non-zero in case of success, zero in
+/*	case of a bad time value or a bad time unit suffix.
+/* LICENSE
+/* .ad
+/* .fi
+/*	The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/*	Wietse Venema
+/*	IBM T.J. Watson Research
+/*	P.O. Box 704
+/*	Yorktown Heights, NY 10598, USA
+/*
+/*	Wietse Venema
+/*	Google, Inc.
+/*	111 8th Avenue
+/*	New York, NY 10011, USA
+/*--*/
+
+/* System library. */
+
+#include <sys_defs.h>
+#include <limits.h>			/* INT_MAX */
+#include <stdlib.h>
+#include <errno.h>
+
+/* Utility library. */
+
+#include <msg.h>
+
+/* Global library. */
+
+#include <conv_time.h>
+
+#define MINUTE	(60)
+#define HOUR	(60 * MINUTE)
+#define DAY	(24 * HOUR)
+#define WEEK	(7 * DAY)
+
+/* conv_time - convert time value */
+
+int     conv_time(const char *strval, int *timval, int def_unit)
+{
+    char   *end;
+    int     intval;
+    long    longval;
+
+    errno = 0;
+    intval = longval = strtol(strval, &end, 10);
+    if (*strval == 0 || errno == ERANGE || longval != intval || intval < 0
+	/* || (*end != 0 && end[1] != 0) */)
+	return (0);
+
+    switch (*end ? *end : def_unit) {
+    case 'w':
+	if (intval < INT_MAX / WEEK) {
+	    *timval = intval * WEEK;
+	    return (1);
+	} else {
+	    return (0);
+	}
+    case 'd':
+	if (intval < INT_MAX / DAY) {
+	    *timval = intval * DAY;
+	    return (1);
+	} else {
+	    return (0);
+	}
+    case 'h':
+	if (intval < INT_MAX / HOUR) {
+	    *timval = intval * HOUR;
+	    return (1);
+	} else {
+	    return (0);
+	}
+    case 'm':
+	if (intval < INT_MAX / MINUTE) {
+	    *timval = intval * MINUTE;
+	    return (1);
+	} else {
+	    return (0);
+	}
+    case 's':
+	*timval = intval;
+	return (1);
+    }
+    return (0);
+}