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Kiritan Flux
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197
bash-ini-parser/bash-ini-parser
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197
bash-ini-parser/bash-ini-parser
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#
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# based on http://theoldschooldevops.com/2008/02/09/bash-ini-parser/
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#
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PREFIX="cfg_section_"
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function debug {
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return #abort debug
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echo $*
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echo --start--
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echo "${ini[*]}"
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echo --end--
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echo
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}
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function cfg_parser {
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shopt -p extglob &> /dev/null
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CHANGE_EXTGLOB=$?
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if [ $CHANGE_EXTGLOB = 1 ]
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then
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shopt -s extglob
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fi
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ini="$(<$1)" # read the file
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ini="${ini//[/\\[}" # escape [
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debug
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ini="${ini//]/\\]}" # escape ]
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debug
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IFS=$'\n' && ini=( ${ini} ) # convert to line-array
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debug
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ini=( ${ini[*]//;*/} ) # remove comments with ;
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debug
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ini=( ${ini[*]/#+([[:space:]])/} ) # remove init whitespace
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debug "whitespace around"
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ini=( ${ini[*]/*([[:space:]])=*([[:space:]])/=} ) # remove whitespace around =
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debug
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ini=( ${ini[*]/#\\[/\}$'\n'"$PREFIX"} ) # set section prefix
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debug
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ini=( ${ini[*]/%\\]/ \(} ) # convert text2function (1)
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debug
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ini=( ${ini[*]/=/=\( } ) # convert item to array
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debug
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ini=( ${ini[*]/%/ \)} ) # close array parenthesis
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debug
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ini=( ${ini[*]/%\\ \)/ \\} ) # the multiline trick
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debug
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ini=( ${ini[*]/%\( \)/\(\) \{} ) # convert text2function (2)
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debug
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ini=( ${ini[*]/%\} \)/\}} ) # remove extra parenthesis
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ini=( ${ini[*]/%\{/\{$'\n''cfg_unset ${FUNCNAME/#'$PREFIX'}'$'\n'} ) # clean previous definition of section
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debug
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ini[0]="" # remove first element
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debug
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ini[${#ini[*]} + 1]='}' # add the last brace
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debug
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eval "$(echo "${ini[*]}")" # eval the result
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EVAL_STATUS=$?
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if [ $CHANGE_EXTGLOB = 1 ]
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then
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shopt -u extglob
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fi
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return $EVAL_STATUS
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}
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function cfg_writer {
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SECTION=$1
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OLDIFS="$IFS"
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IFS=' '$'\n'
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if [ -z "$SECTION" ]
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then
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fun="$(declare -F)"
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else
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fun="$(declare -F $PREFIX$SECTION)"
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if [ -z "$fun" ]
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then
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echo "section $SECTION not found" >2
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exit 1
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fi
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fi
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fun="${fun//declare -f/}"
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for f in $fun; do
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[ "${f#$PREFIX}" == "${f}" ] && continue
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item="$(declare -f ${f})"
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item="${item##*\{}" # remove function definition
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item="${item##*FUNCNAME*$PREFIX\};}" # remove clear section
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item="${item/\}}" # remove function close
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item="${item%)*}" # remove everything after parenthesis
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item="${item});" # add close parenthesis
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vars=""
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while [ "$item" != "" ]
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do
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newvar="${item%%=*}" # get item name
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vars="$vars $newvar" # add name to collection
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item="${item#*;}" # remove readed line
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done
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eval $f
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echo "[${f#$PREFIX}]" # output section
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for var in $vars; do
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eval 'local length=${#'$var'[*]}' # test if var is an array
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if [ $length == 1 ]
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then
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echo $var=\"${!var}\" #output var
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else
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echo ";$var is an array" # add comment denoting var is an array
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eval 'echo $var=\"${'$var'[*]}\"' # output array var
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fi
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done
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done
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IFS="$OLDIFS"
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}
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function cfg_unset {
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SECTION=$1
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OLDIFS="$IFS"
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IFS=' '$'\n'
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if [ -z "$SECTION" ]
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then
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fun="$(declare -F)"
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else
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fun="$(declare -F $PREFIX$SECTION)"
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if [ -z "$fun" ]
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then
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echo "section $SECTION not found" >2
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return
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fi
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fi
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fun="${fun//declare -f/}"
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for f in $fun; do
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[ "${f#$PREFIX}" == "${f}" ] && continue
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item="$(declare -f ${f})"
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item="${item##*\{}" # remove function definition
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item="${item##*FUNCNAME*$PREFIX\};}" # remove clear section
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item="${item/\}}" # remove function close
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item="${item%)*}" # remove everything after parenthesis
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item="${item});" # add close parenthesis
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vars=""
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while [ "$item" != "" ]
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do
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newvar="${item%%=*}" # get item name
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vars="$vars $newvar" # add name to collection
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item="${item#*;}" # remove readed line
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done
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for var in $vars; do
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unset $var
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done
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done
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IFS="$OLDIFS"
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}
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function cfg_clear {
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SECTION=$1
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OLDIFS="$IFS"
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IFS=' '$'\n'
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if [ -z "$SECTION" ]
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then
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fun="$(declare -F)"
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else
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fun="$(declare -F $PREFIX$SECTION)"
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if [ -z "$fun" ]
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then
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echo "section $SECTION not found" >2
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exit 1
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fi
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fi
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fun="${fun//declare -f/}"
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for f in $fun; do
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[ "${f#$PREFIX}" == "${f}" ] && continue
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unset -f ${f}
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done
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IFS="$OLDIFS"
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}
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function cfg_update {
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SECTION=$1
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VAR=$2
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OLDIFS="$IFS"
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IFS=' '$'\n'
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fun="$(declare -F $PREFIX$SECTION)"
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if [ -z "$fun" ]
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then
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echo "section $SECTION not found" >2
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exit 1
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fi
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fun="${fun//declare -f/}"
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item="$(declare -f ${fun})"
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#item="${item##* $VAR=*}" # remove var declaration
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item="${item/\}}" # remove function close
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item="${item}
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$VAR=(${!VAR})
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"
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item="${item}
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}" # close function again
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eval "function $item"
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}
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# vim: filetype=sh
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68
config.sh
Executable file
68
config.sh
Executable file
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@ -0,0 +1,68 @@
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#!/bin/bash
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# PiPilot Config Script
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INI_FILE="${1:-config.ini}"
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DIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
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PARSER=$DIR/bash-ini-parser/bash-ini-parser
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echo
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echo "::::: PiPilot Configuration :::::"
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echo
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if [ -f $INI_FILE ] ;
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then
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# INI initialization
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echo "Detected INI file: $INI_FILE"
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if [ -f $PARSER ];
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then
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source $PARSER
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echo "Loaded bash-ini-parser (https://github.com/albfan/bash-ini-parser)"
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cfg_parser "$INI_FILE"
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echo "Parsed $INI_FILE"
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#Network Setup
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cfg_section_network
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if [ $device = "wifi" ];
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then
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NET_DEV="wlan0"
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echo "Network device set to: '$NET_DEV'"
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if nmcli d wifi list | grep "*" | grep $ssid;
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then
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echo "Already connected to wifi: $ssid"
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else
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ifconfig $NET_DEV down
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echo "Disconnecting wifi"
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if nmcli c | grep $ssid;
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then
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nmcli c delete $ssid
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fi
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set -e
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echo "Connecting to wifi: $ssid"
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nmcli device wifi connect "$ssid" password "$key" ifname $NET_DEV
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set +e
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fi
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else
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NET_DEV="eth0"
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echo "Network device set to: '$NET_DEV'"
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fi
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if [ $inet = "dhcp" ];
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then
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echo "Waiting for IP lease from DHCP server"
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ifconfig $NET_DEV up 0.0.0.0 0.0.0.0
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dhclient $NET_DEV
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else
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echo "Setting static IP to: $ip, Netmask: $netmask, Network: $net, Gateway: $gateway"
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ifconfig $NET_DEV down
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ifconfig $NET_DEV $ip netmask $netmask up
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route add -net $net netmask $netmask gw $gateway dev $NET_DEV
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fi
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fi
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fi
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echo
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echo "::::: PiPilot Done! :::::"
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echo
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