Add hostname (if any) to -L output

README.md

@@ -52,7 +52,7 @@ Make sure that the directory containing `ipblock` is in your **PATH**
 Read the disclaimer before running the `ipblock` command.
 
 ## License and Disclaimer
-Copyright (c) 2017, 2018, 2019, 2020 Timothe Litt
+Copyright (c) 2017, 2018, 2019, 2020, 2021 Timothe Litt
 
 This is free software; the author disclaims all responsibility for its use, reliability and consequences.  The name of the author may not be used to endorse any product, but must be retained in the documentation and code.  Any modifications must be clearly documented and attributed, and are the responsibility of their author.
 

ipblock

@@ -1,10 +1,10 @@
 #!/bin/bash
 
-# Copyright (C) 2017, 2018, 2020 Timothe Litt litt at acm ddot org
+# Copyright (C) 2017, 2018, 2020, 2021 Timothe Litt litt at acm ddot org
 
 # Completely & quickly block specific ip address(es)
 
-VERSION="1.004"
+VERSION="1.005"
 
 SELF="`basename $0`"
 
@@ -317,6 +317,17 @@ if [ "$ACTION" == "list" ]; then
         while read LINE ; do
             TOT=$(( $TOT + 1 ))
             IP="`echo "$LINE" | sed -e's/^src=\([^ ]*\) .*$/\1/'`"
+            HN="`2>/dev/null host $IP`"
+            if [ "$?" -eq 0 ]; then
+                HN="`echo "$HN" | sed -e's/^.*\.arpa domain name pointer \(.*\).$/\1/'`"
+                if [ -n "$HN" ]; then
+                    HN=" ($HN)"
+                else
+                    HN=
+                fi
+            else
+                HN=
+            fi
             # Last seen in jiffies
             SEEN="$( echo "$LINE" | sed -e's/.*last_seen: *\([0-9][0-9]*\) .*$/\1/' )"
             # Now in jiffies
@@ -331,9 +342,9 @@ if [ "$ACTION" == "list" ]; then
             else # Use default (ctime) format
                 DATE="$( date -d@$SSE )"
             fi
-            [ -n "$DEBUG" ] && echo "IP: $IP NOW: $NOW JIFF: $JIFF SEEN: $SEEN TICKS: $TICKS DATE: $DATE"
+            [ -n "$DEBUG" ] && echo "IP: $IP NOW: $NOW JIFF: $JIFF SEEN: $SEEN TICKS: $TICKS DATE: $DATE$HN"
 
-            echo "$IP $( expr substr $Dots 1 $( expr length $Dots - length $IP ) ) $DATE"
+            echo "$IP $( expr substr $Dots 1 $( expr length $Dots - length $IP ) ) $DATE$HN"
         done
 
         if [ -n "$V" ]; then