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2304 tom.houday 1
#!/bin/bash
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#
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# $Id: alcasar-letsencrypt.sh 3163 2023-12-19 18:17:16Z rexy $
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#
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# alcasar-letsencrypt.sh
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# by Tom HOUDAYER
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#
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# This script is distributed under the Gnu General Public License (GPL)
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#
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# Manage Let's Encrypt for ALCASAR integration
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CONF_FILE="/usr/local/etc/alcasar-letsencrypt"
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ACCOUNT_EMAIL=""
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DOMAIN=""
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DNS_API=""
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DEBUG=false
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STAGING_SERVER=""
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FORCE=""
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OPT_PARAMS=""
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ACMESH_HOME="/usr/local/etc/letsencrypt"
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ACMESH_BIN="/opt/acme.sh/acme.sh"
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usage="Usage: alcasar-letsencrypt.sh
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       --issue -d alcasar.domain.tld --email alcasar@domain.tld [--dns-api dns_registrar] [--force] [--staging]
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       --renew [-d alcasar.domain.tld] [--force] [--staging]"
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################################################################################
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#                                    ISSUE                                     #
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################################################################################
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issue() {
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	if [ ! -f $ACMESH_BIN ]; then
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		echo "The client does not seem to be installed."
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		return 1
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	fi
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	TMP_OUTPUT=$(mktemp --suffix=_ALCASAR-LE)
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	if [ ! -z $ACCOUNT_EMAIL ]; then
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		emailField=" --accountemail $ACCOUNT_EMAIL"
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		sed -i "s/^email=.*/email=$ACCOUNT_EMAIL/" $CONF_FILE
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	else
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		emailField=""
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	fi
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	$DEBUG && debugOpt=" --debug" || debugOpt=""
2596 tom.houday 50
	[ ! -z "$DNS_API" ] && dnsApiOpt="$DNS_API" || dnsApiOpt="--yes-I-know-dns-manual-mode-enough-go-ahead-please"
2304 tom.houday 51
	$ACMESH_BIN --config-home $ACMESH_HOME/data \
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		$STAGING_SERVER $FORCE $debugOpt \
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		$emailField \
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		--issue --dns $dnsApiOpt -d $DOMAIN \
2304 tom.houday 55
		$OPT_PARAMS \
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		> $TMP_OUTPUT 2>&1
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	exitCode=$?
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	$DEBUG && cat $TMP_OUTPUT && echo -e "\n\n"
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	sed -i "s/^domainRequest=.*/domainRequest=$DOMAIN/" $CONF_FILE
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	sed -i "s/^dateIssueRequest=.*/dateIssueRequest=$(date +%s)/" $CONF_FILE
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	sed -i "s/^dnsapi=.*/dnsapi=${DNS_API:="dns"}/" $CONF_FILE
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	if ! _handle_client_response $TMP_OUTPUT; then
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		if [ $exitCode -ne 0 ]; then
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			echo -e "Error!\n"
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			cat $TMP_OUTPUT
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			rm -f $TMP_OUTPUT
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			return 1
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		else
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			echo -e "Unknown state\n"
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			cat $TMP_OUTPUT
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		fi
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	fi
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	rm -f $TMP_OUTPUT
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}
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################################################################################
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#                                    RENEW                                     #
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################################################################################
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renew() {
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	if [ ! -f $ACMESH_BIN ]; then
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		echo "The client does not seem to be installed."
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		return 1
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	fi
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	TMP_OUTPUT=$(mktemp --suffix=_ALCASAR-LE)
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	$DEBUG && debugOpt=" --debug" || debugOpt=""
2596 tom.houday 93
	[ ! -z "$DNS_API" ] && dnsApiOpt="" || dnsApiOpt="--yes-I-know-dns-manual-mode-enough-go-ahead-please"
2304 tom.houday 94
	$ACMESH_BIN --config-home $ACMESH_HOME/data \
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		$STAGING_SERVER $FORCE $debugOpt \
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		--renew -d $DOMAIN $dnsApiOpt \
2304 tom.houday 97
		$OPT_PARAMS \
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		> $TMP_OUTPUT 2>&1
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	exitCode=$?
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	$DEBUG && cat $TMP_OUTPUT && echo -e "\n\n"
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	if ! _handle_client_response $TMP_OUTPUT; then
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		if [ $exitCode -ne 0 ]; then
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			echo -e "Error!\n"
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			cat $TMP_OUTPUT
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			rm -f $TMP_OUTPUT
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			return 1
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		else
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			echo -e "Unknown state\n"
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			cat $TMP_OUTPUT
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		fi
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	fi
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	rm -f $TMP_OUTPUT
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}
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################################################################################
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#                                  CRON TASK                                   #
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################################################################################
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cron_task() {
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	if [ $(grep '^dateNextRenewal=' $CONF_FILE | cut -d'=' -f2) -le $(date +%s) ]; then
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		logger -t alcasar-letsencrypt "Launch CRON task."
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		renew
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	fi
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}
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################################################################################
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#                            HANDLE CLIENT RESPONSE                            #
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################################################################################
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_handle_client_response() {
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	[ $# -lt 1 ] && return 1
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	responseFile=$1
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	# issue / renew
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	if [ $(cat $responseFile | grep "Add the following TXT record:" -c) -ne 0 ]; then
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		challenge=$(cat $responseFile | grep -E "TXT value: '[0-9a-zA-Z_-]+'" -o | cut -d"'" -f2)
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		sed -i "s/^challenge=.*/challenge=$challenge/" $CONF_FILE
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		echo "Add the following TXT record:"
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		echo "Domain:    '_acme-challenge.$DOMAIN'"
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		echo "TXT value: '$challenge'"
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	elif [ $(cat $responseFile | grep "Cert success." -c) -ne 0 ]; then
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		sed -i "s/^challenge=.*/challenge=/" $CONF_FILE
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		sed -i "s/^dateIssued=.*/dateIssued=$(date +%s)/" $CONF_FILE
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		sed -i "s/^dateNextRenewal=.*/dateNextRenewal=$(date +%s -d '2 months - 3 days')/" $CONF_FILE
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		install_cert
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		logger -t alcasar-letsencrypt "Certificate \"$DOMAIN\" imported."
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		echo "Certificate imported."
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		[ -z $DNS_API ] && echo "Note: you can delete the TXT record."
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	elif [ $(cat $responseFile | grep "Domains not changed." -c) -ne 0 ]; then
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		echo "Domain not changed"
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	elif [ $(cat $responseFile | grep "$DOMAIN is already verified, skip dns-01." -c) -ne 0 ]; then
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		echo "Domain already verified"
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	elif [ $(cat $responseFile | grep "Error add txt for domain:_acme-challenge.$DOMAIN" -c) -ne 0 ]; then
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		echo "Error add txt for domain:_acme-challenge.$DOMAIN"
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	elif [ $(cat $responseFile | grep "Please add the TXT records to the domains, and retry again." -c) -ne 0 ]; then
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		echo "Dns record not added yet, you need to add it manually and retry again."
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	elif [ $(cat $responseFile | grep 'new-authz error: {"type":"urn:acme:error:malformed","detail":"Error creating new authz :: \(.*\)","status": 400}' -c) -ne 0 ]; then
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		errorMsg=$(cat $responseFile | grep 'new-authz error: {"type":"urn:acme:error:malformed","detail":"Error creating new authz :: \(.*\)","status": 400}' | sed 's/.*new-authz error: {"type":"urn:acme:error:malformed","detail":"Error creating new authz :: \(.*\)","status": 400}.*/\1/')
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		echo "Incorrect domain name"
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		echo "$errorMsg"
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	elif [ $(cat $responseFile | grep "'$DOMAIN' is not a issued domain, skip." -c) -ne 0 ]; then
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		echo "'$DOMAIN' is not a issued domain"
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	# renew
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	elif [ $(cat $responseFile | grep "Skip, Next renewal time is: " -c) -ne 0 ]; then
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		nextRenewal=$(cat $responseFile | grep 'Skip, Next renewal time is: ' | sed 's/.*Skip, Next renewal time is: \(.*\)/\1/')
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		echo "Skip, Next renewal time is: $nextRenewal"
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		echo "Add '--force' to force to renew."
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	elif [ $(cat $responseFile | grep "$DOMAIN:Verify error:Correct value not found for DNS challenge" -c) -ne 0 ]; then
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		echo "Correct value not found for DNS challenge"
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	elif [ $(cat $responseFile | grep "Unable to update challenge :: The challenge is not pending." -c) -ne 0 ]; then
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		echo "The challenge is not pending. You need to issue."
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	else
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		return 2
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	fi
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	return 0
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}
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################################################################################
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#                             INSTALL CERTIFICATE                              #
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################################################################################
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install_cert() {
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	echo "Importing certificate to ALCASAR..."
3163 rexy 191
	LE_cert_folder="$( echo "$ACMESH_HOME/certs/$DOMAIN"*"")"
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	if [ ! -f $LE_cert_folder"/"$DOMAIN.cer ]; then
2304 tom.houday 193
		echo "Certificate not found."
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		return 1
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	fi
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	/usr/local/bin/alcasar-importcert.sh \
3163 rexy 198
		-i $LE_cert_folder"/"$DOMAIN.cer \
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		-k $LE_cert_folder"/"$DOMAIN.key \
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		-c $LE_cert_folder/fullchain.cer \
2304 tom.houday 201
		> /dev/null 2>&1
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	if [ $? -ne 0 ]; then
204
		echo "Error."
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		return 1
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	fi
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}
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################################################################################
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#                                     MAIN                                     #
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################################################################################
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2596 tom.houday 214
if [ $# -eq 0 ]; then
2304 tom.houday 215
	echo "$usage"
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	exit 1
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fi
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cmd=""
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while [ $# -gt 0 ]; do
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	case $1 in
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		-\? | -h | --help)
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			echo "$usage"
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			exit 0
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			;;
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		--issue)
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			cmd="issue"
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			shift 1
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			;;
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		--renew)
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			cmd="renew"
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			shift 1
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			;;
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		--cron)
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			cmd="cron"
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			shift 1
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			;;
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		--install-cert)
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			cmd="install-cert"
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			shift 1
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			;;
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		--email)
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			ACCOUNT_EMAIL="$2"
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			shift 2
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			;;
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		--domain | -d)
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			DOMAIN="$2"
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			shift 2
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			;;
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		--dns-api)
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			DNS_API="$2"
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			shift 2
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			;;
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		--force)
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			FORCE="--force"
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			shift 1
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			;;
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		--staging)
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			STAGING_SERVER="--staging"
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			shift 1
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			;;
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		--debug)
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			DEBUG=true
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			shift 1
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			;;
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		*)
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			found=false
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			for param in "--dnssleep"; do
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				if [ $1 == $param ]; then
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					OPT_PARAMS="$OPT_PARAMS $1 $2"
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					shift 2
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					found=true
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					break
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				fi
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			done
280
 
281
			if ! $found; then
282
				echo "Unknown argument: $1"
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				echo "$usage"
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				exit 1
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			fi
286
			;;
287
	esac
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done
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if [ -z $DOMAIN ]; then
291
	if [ $(grep '^domainRequest=' $CONF_FILE | cut -d'=' -f2 | wc --chars) -gt 1 ]; then
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		DOMAIN="$(grep '^domainRequest=' $CONF_FILE | cut -d'=' -f2)"
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	else
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		DOMAIN="$(grep '^HOSTNAME=' /usr/local/etc/alcasar.conf | cut -d'=' -f2).$(grep '^DOMAIN=' /usr/local/etc/alcasar.conf | cut -d'=' -f2)"
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	fi
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fi
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case $cmd in
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	issue)
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		issue
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		;;
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	renew)
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		renew
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		;;
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	cron)
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		cron_task
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		;;
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	install-cert)
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		install_cert
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		;;
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	*) exit 1 ;;
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esac