From ed9464dae9a1cab898a2555c752442e2cfcdb47c Mon Sep 17 00:00:00 2001
From: Erich Eckner <git@eckner.net>
Date: Mon, 1 Apr 2019 09:07:02 +0200
Subject: update-ddns.in: style update

---
 update-ddns.in | 54 ++++++++++++++++++------------------------------------
 1 file changed, 18 insertions(+), 36 deletions(-)

diff --git a/update-ddns.in b/update-ddns.in
index ce65561..72e89a7 100644
--- a/update-ddns.in
+++ b/update-ddns.in
@@ -5,12 +5,9 @@
 stty &> /dev/null || \
   sleep $[$RANDOM%60]
 
-if ! ipCmd="$(which ip 2> /dev/null)"
-then
-  for p1 in / /usr/
-  do
-    for p2 in bin/ sbin/
-    do
+if ! ipCmd=$(which ip 2> /dev/null); then
+  for p1 in / /usr/; do
+    for p2 in bin/ sbin/; do
       ipCmd="${p1}${p2}ip"
       [ -x "${ipCmd}" ] && break
     done
@@ -22,38 +19,31 @@ unset ignoreIps
 
 i=0
 
-while read -r ipVer updateUrl dnsName
-do
+while read -r ipVer updateUrl dnsName; do
 
-  if [[ "${ipVer}" = '#'* ]] || [ -z "${ipVer}" ]
-  then
+  if [[ "${ipVer}" = '#'* ]] || [ -z "${ipVer}" ]; then
     continue
   fi
 
-  if [[ "${ipVer}" == 'ignore' ]]
-  then
+  if [[ "${ipVer}" == 'ignore' ]]; then
     ignoreIps="${ignoreIps} ${updateUrl} ${dnsName}"
     continue
   fi
 
-  if [[ "${ipVer}" == *"?" ]]
-  then
+  if [[ "${ipVer}" == *"?" ]]; then
     ipVer="${ipVer%?}"
     [ -z "$(${ipCmd} -o -${ipVer} addr show scope global)" ] && continue
   fi
 
-  if [ "${ipVer}" == '4' ]
-  then
+  if [ "${ipVer}" == '4' ]; then
     dnsVers[${i}]='A'
     inetVers[${i}]='inet'
     ipCmdVers[${i}]='-4'
-  elif [ "${ipVer}" == '6' ]
-  then
+  elif [ "${ipVer}" == '6' ]; then
     dnsVers[${i}]='AAAA'
     inetVers[${i}]='inet6'
     ipCmdVers[${i}]='-6'
-  elif [ "${ipVer}" == '46' ] || [ "${ipVer}" == '64' ]
-  then
+  elif [ "${ipVer}" == '46' ] || [ "${ipVer}" == '64' ]; then
     dnsVers[${i}]='A'
     inetVers[${i}]='inet'
     ipCmdVers[${i}]='-4'
@@ -97,28 +87,24 @@ for dnsName in $( \
   echo "${dnsNamen[@]}" | \
     tr ' ' '\n' | \
     sort -u
-)
-do
+); do
   unset updateIps
   unset updateUrl
   unset curlForceIpVer
   needsUpdate=false
 
-  for ((j=0; j<${i}; j++))
-  do
+  for ((j=0; j<${i}; j++)); do
     [ "${dnsName}" != "${dnsNamen[${j}]}" ] && continue
 
     updateUrl="${updateUrls[${j}]}"
 
-    if [[ "${dnsName}" == *'/'* ]]
-    then
+    if [[ "${dnsName}" == *'/'* ]]; then
       dnsIps="$(
         curl ${ipCmdVers[${j}]} "${dnsName}" 2> /dev/null
       )"
       ips='1'
       updateIps="${updateIps}"',auto'
-      if [ -n "${curlForceIpVer}" ] && [ "${curlForceIpVer}" != "${ipCmdVers[${j}]}" ]
-      then
+      if [ -n "${curlForceIpVer}" ] && [ "${curlForceIpVer}" != "${ipCmdVers[${j}]}" ]; then
         >&2 echo 'Error: I cannot determine two different ip versions automatically (because Erich didn'"'"'t need it).'
         exit 1
       fi
@@ -141,8 +127,7 @@ do
           sort -u
       )"
 
-      if [ $(echo "${ips}" | grep -c '.') -eq 0 ]
-      then
+      if [ $(echo "${ips}" | grep -c '.') -eq 0 ]; then
         updateIps="${updateIps}"',auto'
         if [ -n "${curlForceIpVer}" ] && [ "${curlForceIpVer}" != "${ipCmdVers[${j}]}" ]
         then
@@ -155,16 +140,13 @@ do
       fi
     fi
 
-    if [ "${dnsIps}" != "${ips}" ]
-    then
+    if [ "${dnsIps}" != "${ips}" ]; then
       needsUpdate=true
     fi
   done
 
-  if ${needsUpdate}
-  then
-    if [[ "${updateUrl}" = *'?'* ]]
-    then
+  if ${needsUpdate}; then
+    if [[ "${updateUrl}" = *'?'* ]]; then
       updateIps='&address='"${updateIps#,}"
     else
       updateIps='?address='"${updateIps#,}"
-- 
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