Parse bind zone files to produce dcm.pl output.

bindparse.awk

#!/usr/bin/awk -f
#
# Author: Matt Pascoe - [email protected]
#
# This awk script is used to extract relevant information from a bind zone
# file and build the appropriate fields for passing into
# a dcm.pl module.  This can be used to bootstrap a new database from existing
# site data.
#
# You can simply cat a file and pipe it to this script
#
#    cat bindzone|awk -f bindparse.awk
#
BEGIN {} {
  total++
  count[total]=total
  recordtype[total]="unknown"

  # Gather origin so we can use it later to build names
  if ($_ ~ /.*ORIGIN.*/) {
    origin=$2
  }

  # A records
  if ($_ ~ /.*IN .*A/) {
    recordtype[total]="a"
    if ($1 ~ /\./) {
      fqdn[total]=$1
    } else{
      fqdn[total]=$1 "." origin
    }
    ip[total]=$4
    makeptr[total]="N"
  }

  # CNAME records
  if ($_ ~ /.*IN .*CNAME/) {
    recordtype[total]="cname"
    if ($1 ~ /\./) {
      fqdn[total]=$1
    } else{
      fqdn[total]=$1 "." origin
    }
    if ($4 ~ /\./) {
      target[total]=$4
    } else{
      target[total]=$4 "." origin
    }
  }

  # TXT record
  if ($_ ~ /.*IN .*TXT/) {
    recordtype[total]="txt"
    if ($1 ~ /\./) {
      fqdn[total]=$1
    } else{
      fqdn[total]=$1 "." origin
    }
    text[total]=$4
    gsub(/=/, "\\=", text[total]);
  }


  # SRV record
  if ($_ ~ /.*IN .*SRV/) {
    recordtype[total]="srv"
    if ($1 ~ /\./) {
      fqdn[total]=$1
    } else{
      fqdn[total]=$1 "." origin
    }
    pri[total]=$4
    weight[total]=$5
    port[total]=$6
    if ($7 ~ /\./) {
      target[total]=$7
    } else{
      target[total]=$7 "." origin
    }
  }

  # TODO: PTR records
  # For now, not doing it.. its better to let the A record create
  if ($_ ~ /^\^/) {
    split($1,arr,":")
    gsub(/^\^/, "", arr[1]);
    recordtype[total]="ptr"
    fqdn[total]=arr[1]
    ip[total]=arr[2]
    ttl[total]=arr[3]
    loc[total]=arr[5]
  }

  # TODO: NS record
  # not super needed as ONA does this part for you.
  if ($_ ~ /^\&/) {
    split($1,arr,":")
    gsub(/^\&/, "", arr[1]);
    recordtype[total]="ns"
    fqdn[total]=arr[1]
    ip[total]=arr[2]
    srvname[total]=arr[3]
    ttl[total]=arr[4]
    loc[total]=arr[6]

    # If the server was blank, format it to tinydns default x.ns.fqdn
    if (srvname[total] !~ /\./) {
      srvname[total] = srvname[total]".ns."fqdn[total]
    }
  }

  # process @ type tinydns records, MX record
  if ($_ ~ /.*IN .*MX/) {
    distance[total]="0"
    split($1,arr,":")
    gsub(/^\@/, "", arr[1])
    recordtype[total]="mx"
    fqdn[total]=arr[1]
    ip[total]=arr[2]
    srvname[total]=arr[3]
    distance[total]=arr[4]
    ttl[total]=arr[5]
    loc[total]=arr[7]
    makea[total]="Y"
    makeptr[total]="N"

    # If the server was blank, format it to tinydns default x.ns.fqdn
    if (srvname[total] !~ /\./) {
      srvname[total] = srvname[total]".mx."fqdn[total]
    }
  }

  # skip SOA for now
  if ($_ ~ /.*IN .*SOA/) {
    recordtype[total]="soa"
  }

  # skip comments
  if ($_ ~ /^;.*/) {
    recordtype[total]="comment"
  }

  # If the location was blank, make it default
  if (length(loc[total]) == 0) {
    loc[total] = "default"
  }

  #cleanup trailing dot
  gsub(/\.$/, "", fqdn[total]);
  gsub(/\.$/, "", target[total]);
}

END {
  sort = "sort -k 2nr"
  dcmvar = "dcm.pl -r dns_record_add"
  #sort = "sort -k 2nr| column -t -s,"
  for(entry in count) {
    if (recordtype[entry] == "ns") {
      printf("%s,%s,%s,%s,%s,%s\n", recordtype[entry],loc[entry],fqdn[entry],ip[entry],ttl[entry],srvname[entry])
    }
    if (recordtype[entry] == "mx") {
      printf("%s,%s,%s,%s,%s,%s,%s\n", recordtype[entry],loc[entry],fqdn[entry],ip[entry],ttl[entry],srvname[entry],distance[entry])
    }
    if (recordtype[entry] == "ptr") {
      printf("%s,%s,%s,%s,%s,%s,%s\n", recordtype[entry],loc[entry],fqdn[entry],ip[entry],ttl[entry],makea[entry],makeptr[entry])
    }



    if (recordtype[entry] == "a") {
      printf("%s type=%s name=%s ip=%s addptr=%s\n", dcmvar,recordtype[entry],fqdn[entry],ip[entry],makeptr[entry])
    }
    if (recordtype[entry] == "cname") {
      printf("%s type=%s name=%s pointsto=%s\n", dcmvar,recordtype[entry],fqdn[entry],target[entry])
    }
    if (recordtype[entry] == "txt") {
      printf("%s type=%s name=%s txt=%s\n", dcmvar,recordtype[entry],fqdn[entry],text[entry])
    }
    if (recordtype[entry] == "srv") {
      printf("%s type=%s name=%s srv_pri=%s srv_weight=%s srv_port=%s pointsto=%s\n", dcmvar,recordtype[entry],fqdn[entry],pri[entry],weight[entry],port[entry],target[entry])
    }
  }
}