espeasybackup

#!/bin/bash
PROG=$( basename $0 )
DATETIME=$( date "+%Y%m%d-%H%M%S-" )
PREREQS="curl jq"
MAXTIME=30
JSONTIME=6
HWPROVIDERRE="5c:cf:7f:|18:fe:34:|60:01:94:|a0:20:a6:|b4:e6:2d:|68:c6:3a:"

IPLIST=()

function dbgprint {
	[[ -n "${DBGPRINT}" ]] && echo "$PROG debug: $*" >&2
}

function peerlist {
    local H="$1"
	local O="${DATETIME}${H}.json"

	if [[ -s "${O}" ]]
	then
		dbgprint "PROG: Reading json file from $O ..."
	else
		dbgprint "PROG: Downloading json file from $H ..."
		curl -s -m ${JSONTIME} "http://${H}/json" > "${O}"
	fi
	if [[ -s "${O}" ]]
	then
		jq '.nodes[]|{ IPaddr: .ip}' "${O}" | tr -d '"' | awk '{ if ( $1 == "IPaddr:" ) print $2 }'
	else
		rm "${O}"
		echo "$PROG: Warning: Empty response from http://${H}/json" >&2
	fi
}

function collectip {
	local H="$1"
	local IP I NIDX  
	for IP in $( peerlist ${H} )
	do
        NIDX=${#IPLIST[*]}
        for ((I=0; I < ${NIDX}; I++))
        do
            [[ ${IPLIST[$I]} == ${IP} ]] && break
        done
        # if we made it to end of list without matches
        if [[ ${I} == ${NIDX} ]]
        then
            IPLIST[$NIDX]="${IP}"
            dbgprint "Found new $IP (index $NIDX ) ..." 
        fi
	done
}


if [[ "$1" == "-h" ]] || [[ -z "$1" ]]
then
	echo "Usage: $PROG [-a][-z zipfilefullpath|-Z] IPorHostname ..." >&2
	exit 1
fi

#
# put CURLARGS='-u username:password' in ~/.espeasy , then chmod 600 ~/.espeasy
#
if [[ -r "${HOME}/.espeasy" ]]
then
	dbgprint "PROG: sourcing ${HOME}/.espeasy"
	source "${HOME}/.espeasy"
else
    echo "$PROG: Cannot read ${HOME}/.espeasy" >&2
    exit 1
fi


if [[ "$1" == "-a" ]]
then
	shift
	ARPADDR=$( /usr/sbin/arp -an | awk "/${HWPROVIDERRE}/  { print \$2 }" | tr -d '()' | tr '\n' ' ' ) 
	dbgprint "PROG: arp address list: $ARPADDR"
fi

if [[ "$1" == "-z" ]]
then
	ZIP="$2" ; shift ; shift
	DATETIME=""
	PREPREQS="${PREREQS} zip"
	mkdir "/tmp/${PROG}-$$" && cd "/tmp/${PROG}-$$"
elif [[ "$1" == "-Z" ]]
then
	shift
	ZIP="/tmp/config-$(hostname -s)-$( date +%F )"
	DATETIME=""
	PREPREQS="${PREREQS} zip"
	mkdir "/tmp/${PROG}-$$" && cd "/tmp/${PROG}-$$"
fi

[[ -n "${MAILTO}" ]] && PREPREQS="${PREREQS} mail"

for CMD in ${PREREQS}
do
	type $CMD > /dev/null 2>&1 && continue
	echo "$PROG: Please install all prereqs: ${PREREQS}"
	exit 2
done


if [[ $# -gt 1 ]] || [[ -n "${ARPADDR}" ]]
then
	echo "$PROG: Initial list $* $ARPADDR ..."
	for H in $* ${ARPADDR}
	do
		collectip "${H}"
	done

	echo "$PROG: Secondary list: ${IPLIST[*]} ..."
	for H in ${IPLIST}
	do
		collectip "${H}"
	done

else
	collectip "$1"
	IPLIST=( $1 )
fi

echo "$PROG: Backup list has ${#IPLIST[*]} nodes: ${IPLIST[*]} "

for H in ${IPLIST[*]}
do 
	O="${DATETIME}${H}.json"

	if [[ ! -s "${O}" ]]
	then
		dbgprint "PROG: Downloading missing json file from $H ..."
		curl -s -m ${JSONTIME} "http://${H}/json" > "${O}"
	fi

	NAME=$( jq '.WiFi.Hostname' "${O}" | tr -d '"')
	NAME="${NAME:-$H}"
	for F in config.dat security.dat notification.dat rules1.txt rules2.txt rules3.txt rules4.txt esp.css 
	do
		O="${DATETIME}${NAME}-${F}"
        echo -n "$PROG: Backup $H $F --> ${O} ..."
        curl -s -m ${MAXTIME} ${CURLARGS} "http://${H}/${F}" > "${O}"
		if [[ -s "${O}" ]]
		then
			if grep -q "URI: /${F}" "${O}"
			then
				echo "Header only - removed"
				rm "${O}"
			else
				echo " OK"
			fi
		else 
			echo "empty - removed" 
			rm "${O}"
		fi
	done
	#
	# We're done with this IP address. Rename to hostname if relevant ...
	#
	[[ ${NAME} != ${H} ]] && mv "${DATETIME}${H}.json" "${DATETIME}${NAME}.json"
done

if [[ -n "${ZIP}" ]]
then
	echo "$PROG: Sending ZIP file $ZIP to $MAILTO ..."
	dbgprint "PROG: Creating zip-file ${ZIP}.zip from ${PWD}"
	zip -rq9 "${ZIP}" .
    NFILES=$( ls -1 | wc -l )
	cd "${HOME}"
    rm -rf "/tmp/${PROG}-$$" 
	if [[ -n "${MAILTO}" ]]
	then 
		dbgprint "Email to ${MAILTO}"
        SUB="$PROG backup from $( hostname -s ) on $( date +%F ) (${#IPLIST[*]} nodes, ${NFILES} files)"
		#mpack -s "${SUB}" "${ZIP}.zip" ${MAILTO} 
        echo -e "Backup file attached from ${#IPLIST[*]} nodes, total of ${NFILES} files\n\n" | \
        mail -s "${SUB}" --content-type=application/zip -A "${ZIP}.zip" ${MAILTO}
	fi
fi

# :tabSize=4:indentSize=4:noTabs=true
# vim:ts=4:sw=4