Code cleanup as reported by shellcheck
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@ -43,14 +43,12 @@ valid_ip() {
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valid_ipv4() {
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local ip=$1
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local stat=1
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local ipaddr
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if [[ $ip =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
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OIFS=$IFS
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IFS='.'
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ip=($ip)
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IFS=$OIFS
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[[ ${ip[0]} -le 255 && ${ip[1]} -le 255 \
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&& ${ip[2]} -le 255 && ${ip[3]} -le 255 ]]
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IFS='.' read -ra ipaddr <<< "$ip"
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[[ ${ipaddr[0]} -le 255 && ${ipaddr[1]} -le 255 \
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&& ${ipaddr[2]} -le 255 && ${ipaddr[3]} -le 255 ]]
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stat=$?
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fi
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return $stat
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@ -73,7 +71,7 @@ getRecords() {
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if [[ ! -r "$file" ]]; then
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return 1
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else
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while read r;
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while read -r r;
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do
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r=$(trim "$r")
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[[ ${r:0:1} == '#' ]] && continue
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@ -138,11 +136,13 @@ getIPv6() {
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getDnsNS() {
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local rec=$1
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local domain=$(sed 's/[^.]*\.\([^.]*\..*\)/\1/' <<<"$rec")
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local domain
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local result
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local err
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result=$(dig +short @8.8.8.8 NS $domain | sed -e 's/.$//')
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domain=$(sed 's/[^.]*\.\([^.]*\..*\)/\1/' <<<"$rec")
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result=$(dig +short @8.8.8.8 NS "$domain" | sed -e 's/.$//')
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err=$?
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if [[ $err -eq 0 ]]
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@ -167,7 +167,7 @@ getDnsRecord() {
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do
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[[ "$i" = "ERROR" ]] && return 1
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result=$(dig +short @${i} ${rectype} ${rec} | head -n1)
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result=$(dig +short @"$i" "$rectype" "$rec" | head -n1)
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err=$?
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if [[ $err -ne 0 ]] || [[ -z "$result" ]]; then
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@ -189,7 +189,7 @@ getIPv6Prefix() {
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local result
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local err
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if valid_ipv6 $rec
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if valid_ipv6 "$rec"
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then
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result=$(echo "$rec" | cut -d':' -f1-4)
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result="${result}::/64"
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@ -260,12 +260,12 @@ log() {
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}
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logerr() {
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>&2 log $*
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>&2 log "$@"
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}
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run-parts() {
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# Ignore *~ and *, scripts
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for i in $(LC_ALL=C; echo ${1%/}/*[^~,]) ; do
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for i in $(LC_ALL=C; echo "${1%/}"/*[^~,]) ; do
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[[ -d $i ]] && continue
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# Don't run *.{rpmsave,rpmorig,rpmnew,swp,cfsaved} scripts
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[[ "${i%.cfsaved}" != "${i}" ]] && continue
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@ -301,24 +301,25 @@ run-parts() {
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run-hook() {
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local hook_dir=$1
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local errors=0
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local hook_script
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shift
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if [[ ! -d "${hook_dir}" ]]; then
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return 0
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fi
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while read s
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while read -r hook_script
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do
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log "Running agent: $(basename "$s")"
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log "Running agent: $(basename "$hook_script")"
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DIP_FUNCTIONS="$(readlink -f "$0")" \
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DIP_AGENT_NAME="$(basename "$(readlink -f "$s")")" \
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DIP_AGENT_EXEC="$(basename "$s")" \
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DIP_AGENT_DIR="$(dirname "$(readlink -f "$s")")" \
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DIP_AGENT_NAME="$(basename "$(readlink -f "$hook_script")")" \
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DIP_AGENT_EXEC="$(basename "$hook_script")" \
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DIP_AGENT_DIR="$(dirname "$(readlink -f "$hook_script")")" \
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DIP_BASE_DIR="${script_dir}" \
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DIP_CUR_IP="$1" \
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DIP_OLD_IP="$2" \
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DIP_RECORD="$3" \
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"$s" $*
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"$hook_script" "$@"
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err=$?
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if [[ $err -ne 0 ]]; then
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@ -400,7 +401,7 @@ check-update() {
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[[ -z "$iptype" ]] && return 1
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[[ -z "$record" ]] && return 1
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getCurrentIP $iptype $record
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getCurrentIP "$iptype" "$record"
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err=$?
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case $err in
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@ -427,7 +428,7 @@ check-update() {
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logerr "DEBUG: dig output '$externalip'"
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;;
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*) logerr "Unknown fatal error occurred"
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eclogerrho "(${BASH_SOURCE}:${LINENO}): ${FUNCNAME[0]:+${FUNCNAME[0]}(): }"
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logerr "(${BASH_SOURCE[0]}:${LINENO}): ${FUNCNAME[0]:+${FUNCNAME[0]}(): }"
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exit $err
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;;
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esac
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@ -445,8 +446,8 @@ prog_lock() {
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LOCKFD=99
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# PRIVATE
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_lock() { flock -$1 $LOCKFD; }
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_no_more_locking() { _lock u; _lock xn && rm -f $LOCKFILE; }
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_lock() { flock -"$1" $LOCKFD; }
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_no_more_locking() { _lock u; _lock xn && rm -f "$LOCKFILE"; }
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_prepare_locking() { eval "exec $LOCKFD>\"$LOCKFILE\""; trap _no_more_locking EXIT; }
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# ON START
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@ -473,27 +474,16 @@ prog_lock() {
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if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
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# Internal Initialization
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prog_name=$(basename "$0")
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#prog_name=$(basename "$0")
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script_dir=$(dirname "$(readlink -f "$0")")
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if [[ -z "$1" ]]; then
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logerr "ERROR: Need to provide a DNS record or file to look-up"
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exit 1
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else
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if [[ -r "$1" ]]; then
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record_file=$1
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else
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record=$1
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fi
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fi
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prog_lock
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# Main
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if [[ -r "${script_dir}/plugins/${1}" ]]; then
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# shellcheck source=plugins/update-ipv4
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source "${script_dir}/plugins/${1}"
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plugin_name=${1,,}
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else
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logerr "ERROR: Unknown plugin '${1}'"
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fi
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