src/patches/dnsmasq/0053-Log-parsing-utils-in-contrib-reverse-dns.patch

   1 From 47b9ac59c715827252ae6e6732903c3dabb697fb Mon Sep 17 00:00:00 2001
   2 From: Joachim Zobel <jz-2014@heute-morgen.de>
   3 Date: Mon, 23 Feb 2015 21:38:11 +0000
   4 Subject: [PATCH 53/71] Log parsing utils in contrib/reverse-dns
   5
   6 ---
   7  contrib/reverse-dns/README             | 18 ++++++++++++++++++
   8  contrib/reverse-dns/reverse_replace.sh | 28 ++++++++++++++++++++++++++++
   9  2 files changed, 46 insertions(+)
  10  create mode 100644 contrib/reverse-dns/README
  11  create mode 100644 contrib/reverse-dns/reverse_replace.sh
  12
  13 diff --git a/contrib/reverse-dns/README b/contrib/reverse-dns/README
  14 new file mode 100644
  15 index 000000000000..f87eb77c4c22
  16 --- /dev/null
  17 +++ b/contrib/reverse-dns/README
  18 @@ -0,0 +1,18 @@
  19 +Hi.
  20 +
  21 +To translate my routers netstat-nat output into names that actually talk
  22 +to me I have started writing to simple shell scripts. They require
  23 +
  24 +log-queries
  25 +log-facility=/var/log/dnsmasq.log
  26 +
  27 +to be set. With
  28 +
  29 +netstat-nat -n -4 | reverse_replace.sh
  30 +
  31 +I get retranslated output.
  32 +
  33 +Sincerely,
  34 +Joachim
  35 +
  36 +
  37 diff --git a/contrib/reverse-dns/reverse_replace.sh b/contrib/reverse-dns/reverse_replace.sh
  38 new file mode 100644
  39 index 000000000000..a11c164b7f19
  40 --- /dev/null
  41 +++ b/contrib/reverse-dns/reverse_replace.sh
  42 @@ -0,0 +1,28 @@
  43 +#!/bin/bash
  44 +# $Id: reverse_replace.sh 4 2015-02-17 20:14:59Z jo $
  45 +#
  46 +# Usage e.g.: netstat -n -4 | reverse_replace.sh
  47 +# Parses stdin for IP4 addresses and replaces them
  48 +# with names retrieved by reverse_dns.sh
  49 +#
  50 +
  51 +DIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
  52 +DNS=$DIR/reverse_dns.sh
  53 +
  54 +# sed regex
  55 +IP_regex='[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}'
  56 +
  57 +while read LINE; do
  58 +  if grep --quiet $IP_regex <<< "$LINE"; then
  59 +    IPs=`sed "s#.*\b\($IP_regex\)\b.*#\1 #g" <<< "$LINE"`
  60 +    IPs=($IPs)
  61 +    for IP in "${IPs[@]}"
  62 +    do
  63 +      NAME=`$DNS $IP`
  64 +      # echo "$NAME is $IP";
  65 +      LINE="${LINE/$IP/$NAME}"
  66 +    done
  67 +  fi
  68 +  echo $LINE
  69 +done < /dev/stdin
  70 +
  71 --
  72 2.1.0
  73