Changes:

- added describe command
- fixed v4+v6 handling

upctl/lib/timestamp.go

@@ -20,6 +20,7 @@ package lib
 // FIXME: import from upd!!!!
 
 import (
+	"regexp"
 	"strconv"
 	"time"
 )
@@ -63,3 +64,36 @@ func (t *Timestamp) parseUnix(data []byte) error {
 	t.Time = time.Unix(0, int64(f*float64(time.Second/time.Nanosecond)))
 	return nil
 }
+
+/*
+   We could use time.ParseDuration(), but this doesn't support days.
+
+   We  could also  use github.com/xhit/go-str2duration/v2,  which does
+   the job,  but it's  just another dependency,  just for  this little
+   gem. And  we don't need a  time.Time value.
+
+   Convert a  duration into  seconds (int).
+   Valid  time units  are "s", "m", "h" and "d".
+*/
+func duration2int(duration string) int {
+	re := regexp.MustCompile(`(\d+)([dhms])`)
+	seconds := 0
+
+	for _, match := range re.FindAllStringSubmatch(duration, -1) {
+		if len(match) == 3 {
+			v, _ := strconv.Atoi(match[1])
+			switch match[2][0] {
+			case 'd':
+				seconds += v * 86400
+			case 'h':
+				seconds += v * 3600
+			case 'm':
+				seconds += v * 60
+			case 's':
+				seconds += v
+			}
+		}
+	}
+
+	return seconds
+}