diff --git a/bind_get_domain_by_hostname.sh b/bind_get_domain_by_hostname.sh index cb5ef14..9d17e8b 100755 --- a/bind_get_domain_by_hostname.sh +++ b/bind_get_domain_by_hostname.sh @@ -1,94 +1,214 @@ #!/usr/bin/env bash -# - Bind configuration file containing zone definitions -# - -ZONE_CONF_FILE=/etc/bind/named.conf.local +working_dir="$(dirname $(realpath $0))" +conf_file="${working_dir}/conf/bind.conf" -## -- -## -- End: Variable definitions +log_file="$(mktemp)" -## *** -## *** Don't make changes after this line *** -## *** +#--------------------------------------- +#----------------------------- +# Base Function(s) +#----------------------------- +#--------------------------------------- + +usage() { + echo + [ -n "$1" ] && echo -e "Error: $1\n" + + cat< + + Script checks if a given hostname is supported by this nameserver. Hostname can + alos be a TLD name. + + As result the Script returns the zone (domain) of the given hostname." In silent + mode (-q), script returns an empty String, if the given hostname is not + supported by this nameserver. + + Options: + + -h + Prints this help. + + -q + Runs in silent mode. + +EOF +clean_up 1 +} + +clean_up() { + + # Perform program exit housekeeping + rm $log_file + exit $1 +} -## --- some functions -## --- echononl(){ - echo X\\c > /tmp/shprompt$$ - if [ `wc -c /tmp/shprompt$$ | awk '{print $1}'` -eq 1 ]; then - echo -e -n "$*\\c" 1>&2 - else - echo -e -n "$*" 1>&2 + if $verbose ; then + echo X\\c > /tmp/shprompt$$ + if [ `wc -c /tmp/shprompt$$ | awk '{print $1}'` -eq 1 ]; then + echo -e -n "$*\\c" 1>&2 + else + echo -e -n "$*" 1>&2 + fi + rm /tmp/shprompt$$ fi - rm /tmp/shprompt$$ } warn (){ - echo "" - echo -e "\t[ \033[33m\033[1mWarning\033[m ]: $*" - echo "" + if $verbose ; then + echo "" + echo -e "\t[ \033[33m\033[1mWarning\033[m ]: $*" + echo "" + fi } info (){ - echo "" - echo -e "\t[ \033[32m\033[1mInfo\033[m ]: $*" - echo "" + if $verbose ; then + echo "" + echo -e "\t[ \033[32m\033[1mInfo\033[m ]: $*" + echo "" + fi } error(){ - echo "" - echo -e "\t[ \033[31m\033[1mFehler\033[m ]: $*" - echo "" + if $verbose ; then + echo "" + echo -e "\t[ \033[31m\033[1mFehler\033[m ]: $*" + echo "" + fi } echo_ok() { - echo -e "\033[75G[ \033[32mok\033[m ]" + if $verbose ; then + echo -e "\033[75G[ \033[32mok\033[m ]" + fi } echo_failed(){ - echo -e "\033[75G[ \033[1;31mfailed\033[m ]" + if $verbose ; then + echo -e "\033[75G[ \033[1;31mfailed\033[m ]" + fi } echo_skipped() { - echo -e "\033[75G[ \033[33m\033[1mskipped\033[m ]" + if $verbose ; then + echo -e "\033[75G[ \033[33m\033[1mskipped\033[m ]" + fi } -## --- -## --- END: functions - -hostname=$1 - # - Test whether stdout (file descriptor 1) is a terminal or not (e.g. cron # - or if you pipe the output to some other program) # if [[ -t 1 ]] ; then - verbose=true + verbose=true else verbose=false fi + +while getopts hq opt ; do + case $opt in + q) verbose=false + ;; + h) usage + ;; + *) + ;; + esac +done + +shift $(expr $OPTIND - 1) +if [[ $# -ne 1 ]] ; then + if $verbose ; then + usage "wrong number of arguments" + else + clean_up 10 + fi +fi + +hostname=$1 + + $verbose && echo "" +if [[ -z "$hostname" ]] ; then + error "No hostname/domain given!" + clean_up 10 +fi + + +#--------------------------------------- +#----------------------------- +# Setting Defaults +#----------------------------- +#--------------------------------------- + +DEFAULT_CONF_FILE_DIR="/etc/bind" + + + +#--------------------------------------- +#----------------------------- +# Load default values from bind.conf +# +# Overwrites the settings above +# +#----------------------------- +#--------------------------------------- + +if $verbose ; then + clear + echo "" + echo -e "\033[32mRunning script \033[1m"$(basename $0)"\033[m .." + echo "" +fi + + +info "Given hostname: \033[1m${hostname}\033[m" + + +echononl "\t Loading default Configuration values from $(basename ${conf_file}).." +if [[ ! -f "$conf_file" ]]; then + echo_skipped +else + source "${conf_file}" > $log_file 2>&1 + if [[ $? -eq 0 ]]; then + echo_ok + else + echo_failed + fatal "$(cat $log_file)" + fi +fi + +[[ -n "$CONF_FILE_DIR" ]] || CONF_FILE_DIR="$DEFAULT_CONF_FILE_DIR" +[[ -n "$ZONES_DECLARATION_FILE" ]] || ZONES_DECLARATION_FILE="${CONF_FILE_DIR}/named.conf.local" + +$verbose && echo "" + + # - Validate Syntax of given domain # - valid_domain_regex="^([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])(\.([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]{0,61}[a-zA-Z0-9]))*$" -$verbose && echononl "\tValidate syntax of given hostname/domain.." +echononl "\t Validate syntax of given hostname/domain.." if [[ $hostname =~ $valid_domain_regex ]]; then if [[ ! $hostname =~ \. ]]; then - $verbose && echo_failed - $verbose && error "Invalid hostname/domain given!" - exit 10 + echo_failed + error "Invalid hostname/domain given!" + clean_up 10 else - $verbose && echo_ok + echo_ok fi else - $verbose && echo_failed - $verbose && error "Invalid hostname/domain given!" - exit 10 + echo_failed + error "Invalid hostname/domain given!" + clean_up 10 fi _failed=false _hostname=$(echo ${hostname//\./\\.}) -while ! grep -e "$_hostname" $ZONE_CONF_FILE > /dev/null 2>&1 ; do +while ! grep -E "^\s*zone\s+\"?$_hostname" $ZONES_DECLARATION_FILE > /dev/null 2>&1 ; do hostname=${hostname#*.} _hostname=$(echo ${hostname//\./\\.}) if [[ ! $_hostname =~ \. ]]; then @@ -102,12 +222,12 @@ if $_failed ; then else domain=$hostname if $verbose ; then - info "Domain: $domain" + info "Hosted Zone: \033[1m${domain}\033[m" else echo "$domain" fi fi $verbose && echo -exit 0 +clean_up 0