Spellcheck improvements (no warnings in pihole and advanced/Scripts/webpage.sh remains)

Signed-off-by: DL6ER <dl6er@dl6er.de>

advanced/Scripts/utils.sh

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+
+# Pi-hole: A black hole for Internet advertisements
+# (c) 2020 Pi-hole, LLC (https://pi-hole.net)
+# Network-wide ad blocking via your own hardware.
+#
+# Controller for all pihole scripts and functions.
+#
+# This file is copyright under the latest version of the EUPL.
+# Please see LICENSE file for your rights under this license.
+
+# Ensure there is a newline at the end of the file passed as argument
+ensure_newline() {
+  # Check if the last line of the passed file is empty, if not, append a newline
+  # to the file to ensure we can append new content safely using echo "" >>
+  # later on
+  [ -n "$(tail -c1 "${1}")" ] && printf '\n' >> "${1}"
+  # There was also the suggestion of using a sed-magic call here, however, this
+  # had the drawback to updating all the file timestamps whenever the sed was
+  # run. This solution only updates the timestamp when actually appending a
+  # newline
+}

advanced/Scripts/webpage.sh

@@ -22,13 +22,21 @@ readonly gravityDBfile="/etc/pihole/gravity.db"
 
 # Source install script for ${setupVars}, ${PI_HOLE_BIN_DIR} and valid_ip()
 readonly PI_HOLE_FILES_DIR="/etc/.pihole"
+setupVars=""
+DHCP_IPv6=false
 # shellcheck disable=SC2034  # used in basic-install
 PH_TEST="true"
 source "${PI_HOLE_FILES_DIR}/automated install/basic-install.sh"
 
-coltable="/opt/pihole/COL_TABLE"
+# ensure_newline()
+readonly utilsfile="${PI_HOLE_SCRIPT_DIR}/utils.sh"
+# shellcheck source=./utils.sh
+source "${utilsfile}"
+
+readonly coltable="${PI_HOLE_SCRIPT_DIR}/COL_TABLE"
 if [[ -f ${coltable} ]]; then
-    source ${coltable}
+  # shellcheck source=./COL_TABLE
+  source "${coltable}"
 fi
 
 helpFunc() {
@@ -49,6 +57,7 @@ Options:
 }
 
 add_setting() {
+    ensure_newline "${setupVars}"
     echo "${1}=${2}" >> "${setupVars}"
 }
 
@@ -62,6 +71,7 @@ change_setting() {
 }
 
 addFTLsetting() {
+    ensure_newline "${FTLconf}"
     echo "${1}=${2}" >> "${FTLconf}"
 }
 
@@ -75,6 +85,7 @@ changeFTLsetting() {
 }
 
 add_dnsmasq_setting() {
+    ensure_newline "${dnsmasqconfig}"
     if [[ "${2}" != "" ]]; then
         echo "${1}=${2}" >> "${dnsmasqconfig}"
     else
@@ -146,6 +157,7 @@ SetWebPassword() {
 ProcessDNSSettings() {
     source "${setupVars}"
 
+    ensure_newline "${dnsmasqconfig}"
     delete_dnsmasq_setting "server"
 
     COUNTER=1
@@ -392,6 +404,7 @@ ProcessDHCPSettings() {
     fi
 
     # Write settings to file
+    # We do not need to ensure a newline here as the entire file is re-written
     echo "###############################################################################
 #  DHCP SERVER CONFIG FILE AUTOMATICALLY POPULATED BY PI-HOLE WEB INTERFACE.  #
 #            ANY CHANGES MADE TO THIS FILE WILL BE LOST ON CHANGE             #
@@ -545,6 +558,7 @@ AddDHCPStaticAddress() {
     ip="${args[3]}"
     host="${args[4]}"
 
+    ensure_newline "${dhcpstaticconfig}"
     if [[ "${ip}" == "noip" ]]; then
         # Static host name
         echo "dhcp-host=${mac},${host}" >> "${dhcpstaticconfig}"
@@ -689,6 +703,7 @@ AddCustomDNSAddress() {
 
     ip="${args[2]}"
     host="${args[3]}"
+    ensure_newline "${dnscustomfile}"
 	echo "${ip} ${host}" >> "${dnscustomfile}"
 
     # Restart dnsmasq to load new custom DNS entries
@@ -711,6 +726,7 @@ AddCustomCNAMERecord() {
 
     domain="${args[2]}"
     target="${args[3]}"
+    ensure_newline "${dnscustomcnamefile}"
     echo "cname=${domain},${target}" >> "${dnscustomcnamefile}"
 
     # Restart dnsmasq to load new custom CNAME records

pihole

@@ -18,9 +18,16 @@ setupVars="/etc/pihole/setupVars.conf"
 PI_HOLE_BIN_DIR="/usr/local/bin"
 
 readonly colfile="${PI_HOLE_SCRIPT_DIR}/COL_TABLE"
+# shellcheck source=./advanced/Scripts/COL_TABLE
 source "${colfile}"
 
+# ensure_newline()
+readonly utilsfile="${PI_HOLE_SCRIPT_DIR}/utils.sh"
+# shellcheck source=./advanced/Scripts/utils.sh
+source "${utilsfile}"
+
 webpageFunc() {
+  # shellcheck source=./advanced/Scripts/webpage.sh
   source "${PI_HOLE_SCRIPT_DIR}/webpage.sh"
   main "$@"
   exit 0
@@ -37,9 +44,13 @@ debugFunc() {
 
   # Pull off the `debug` leaving passed call augmentation flags in $1
   shift
+  # We do not want to be warned about implicit concatenation of array in [[ ]]
+  # as this is exactly what we want here
+  # shellcheck disable=SC2199
   if [[ "$@" == *"-a"* ]]; then
     automated="true"
   fi
+  # shellcheck disable=SC2199
   if [[ "$@" == *"-w"* ]]; then
     web="true"
   fi
@@ -154,7 +165,7 @@ Time:
       echo -e "  ${INFO} Blocking already disabled, nothing to do"
       exit 0
     fi
-    if [[ $# > 1 ]]; then
+    if [[ $# -gt 1 ]]; then
       local error=false
       if [[ "${2}" == *"s" ]]; then
         tt=${2%"s"}
@@ -162,7 +173,7 @@ Time:
           local str="Disabling blocking for ${tt} seconds"
           echo -e "  ${INFO} ${str}..."
           local str="Blocking will be re-enabled in ${tt} seconds"
-          nohup "${PI_HOLE_SCRIPT_DIR}"/pihole-reenable.sh ${tt} </dev/null &>/dev/null &
+          nohup "${PI_HOLE_SCRIPT_DIR}/pihole-reenable.sh" "${tt}" </dev/null &>/dev/null &
         else
           local error=true
         fi
@@ -172,8 +183,8 @@ Time:
           local str="Disabling blocking for ${tt} minutes"
           echo -e "  ${INFO} ${str}..."
           local str="Blocking will be re-enabled in ${tt} minutes"
-          tt=$((${tt}*60))
+          tt=$((tt*60))
-          nohup "${PI_HOLE_SCRIPT_DIR}"/pihole-reenable.sh ${tt} </dev/null &>/dev/null &
+          nohup "${PI_HOLE_SCRIPT_DIR}/pihole-reenable.sh" "${tt}" </dev/null &>/dev/null &
         else
           local error=true
         fi
@@ -191,6 +202,7 @@ Time:
 
       local str="Pi-hole Disabled"
       sed -i "/BLOCKING_ENABLED=/d" "${setupVars}"
+      ensure_newline "${setupVars}"
       echo "BLOCKING_ENABLED=false" >> "${setupVars}"
     fi
   else
@@ -204,6 +216,7 @@ Time:
     local str="Pi-hole Enabled"
 
     sed -i "/BLOCKING_ENABLED=/d" "${setupVars}"
+    ensure_newline "${setupVars}"
     echo "BLOCKING_ENABLED=true" >> "${setupVars}"
   fi
 
@@ -320,7 +333,8 @@ statusFunc() {
 
 tailFunc() {
   # Warn user if Pi-hole's logging is disabled
-  local logging_enabled=$(grep -c "^log-queries" /etc/dnsmasq.d/01-pihole.conf)
+  local logging_enabled
+  logging_enabled=$(grep -c "^log-queries" /etc/dnsmasq.d/01-pihole.conf)
   if [[ "${logging_enabled}" == "0" ]]; then
     # No "log-queries" lines are found.
     # Commented out lines (such as "#log-queries") are ignored
@@ -361,6 +375,7 @@ Branches:
     exit 0
   fi
 
+  # shellcheck source=./advanced/Scripts/piholeCheckout.sh
   source "${PI_HOLE_SCRIPT_DIR}"/piholeCheckout.sh
   shift
   checkout "$@"