127 lines
3.9 KiB
Bash
127 lines
3.9 KiB
Bash
#!/bin/sh
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# Check variables DUCKDNS_TOKEN, DUCKDNS_DOMAIN
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if [ -z "$DUCKDNS_TOKEN" ] || [ "$DUCKDNS_TOKEN" = "XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX" ]; then
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echo "ERROR: Variable DUCKDNS_TOKEN is unset or still its default value"
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exit 1
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fi
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if [ -z "$DUCKDNS_DOMAIN" ]; then
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echo "ERROR: Variable DUCKDNS_DOMAIN is unset or still its default value"
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exit 1
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fi
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# Print email notice if applicable
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if [ -z "$LETSENCRYPT_EMAIL" ]; then
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echo "WARNING: You will not receive SSL certificate expiration notices"
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fi
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# Set LETSENCRYPT_DOMAIN to DUCKDNS_DOMAIN if not specified
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if [ -z "$LETSENCRYPT_DOMAIN" ]; then
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echo "INFO: LETSENCRYPT_DOMAIN is unset, using DUCKDNS_DOMAIN"
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LETSENCRYPT_DOMAIN=$DUCKDNS_DOMAIN
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fi
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# Set certificate url based on LETSENCRYPT_WILDCARD value
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if [ "$LETSENCRYPT_WILDCARD" = "true" ]; then
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echo "INFO: A wildcard SSL certificate will be created"
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LETSENCRYPT_DOMAIN="*.$LETSENCRYPT_DOMAIN"
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else
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LETSENCRYPT_WILDCARD="false"
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fi
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if [ "$LETSENCRYPT_WILDCARD_DOMAIN_SAN" = "true" ] && [ "$LETSENCRYPT_WILDCARD" = "true" ]; then
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echo "INFO: Main domain SAN requested and will be created at the same time"
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LETSENCRYPT_WILDCARD_DOMAIN_SAN="true"
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else
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LETSENCRYPT_WILDCARD_DOMAIN_SAN="true"
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fi
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# Set default preferred chain if no value specified
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if [ -z "$LETSENCRYPT_CHAIN" ]; then
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echo "INFO: LETSENCRYPT_CHAIN is unset, using default chain"
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LETSENCRYPT_CHAIN="default"
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fi
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# Set user and group ID's for files
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if [ -z "$UID" ]; then
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echo "INFO: No UID specified, using root UID of 0"
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UID=0
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fi
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if [ -z "$GID" ]; then
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echo "INFO: No GID specified, using root GID of 0"
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GID=0
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fi
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# Print variables
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echo "DUCKDNS_TOKEN: $DUCKDNS_TOKEN"
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echo "DUCKDNS_DOMAIN: $DUCKDNS_DOMAIN"
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echo "LETSENCRYPT_DOMAIN: $LETSENCRYPT_DOMAIN"
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echo "LETSENCRYPT_EMAIL: $LETSENCRYPT_EMAIL"
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echo "LETSENCRYPT_WILDCARD: $LETSENCRYPT_WILDCARD"
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echo "LETSENCRYPT_CHAIN: $LETSENCRYPT_CHAIN"
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echo "TESTING: $TESTING"
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echo "UID: $UID"
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echo "GID: $GID"
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echo "LETSENCRYPT_WILDCARD_DOMAIN_SAN: $LETSENCRYPT_WILDCARD_DOMAIN_SAN"
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if [ -z "$LETSENCRYPT_EMAIL" ]; then
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EMAIL_PARAM="--register-unsafely-without-email"
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else
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EMAIL_PARAM="-m $LETSENCRYPT_EMAIL --no-eff-email"
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fi
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if [ "$LETSENCRYPT_CHAIN" = "default" ]; then
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unset CHAIN_PARAM
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else
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CHAIN_PARAM=( --preferred-chain "$LETSENCRYPT_CHAIN" )
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fi
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if [ "$TESTING" = "true" ]; then
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echo "INFO: Generating staging certificate"
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TEST_PARAM="--test-cert"
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else
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unset TEST_PARAM
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fi
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if [ "$LETSENCRYPT_WILDCARD_DOMAIN_SAN" = "true" ]; then
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DOMAIN_STRING="-d $LETSENCRYPT_DOMAIN -d $DUCKDNS_DOMAIN"
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else
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DOMAIN_STRING="-d $LETSENCRYPT_DOMAIN"
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fi
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echo "certbot certonly --manual --preferred-challenges dns \
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--manual-auth-hook /scripts/auth.sh \
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--manual-cleanup-hook /scripts/cleanup.sh \
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${CHAIN_PARAM[@]} $EMAIL_PARAM $DOMAIN_STRING \
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--agree-tos --manual-public-ip-logging-ok --keep $TEST_PARAM"
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# Create certificates
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certbot certonly --manual --preferred-challenges dns \
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--manual-auth-hook /scripts/auth.sh \
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--manual-cleanup-hook /scripts/cleanup.sh \
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"${CHAIN_PARAM[@]}" $EMAIL_PARAM $DOMAIN_STRING \
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--agree-tos --manual-public-ip-logging-ok --keep $TEST_PARAM
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chown -R $UID:$GID /etc/letsencrypt
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# Check for successful certificate generation
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if [ ! -d "/etc/letsencrypt/live/${LETSENCRYPT_DOMAIN#\*\.}" ] || \
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[ ! -f "/etc/letsencrypt/live/${LETSENCRYPT_DOMAIN#\*\.}/fullchain.pem" ] || \
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[ ! -f "/etc/letsencrypt/live/${LETSENCRYPT_DOMAIN#\*\.}/privkey.pem" ]; then
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echo "ERROR: Failed to create SSL certificates"
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exit 1
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fi
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# Check if certificates require renewal twice a day
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while :; do
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# Wait for a random period within the next 12 hours
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LETSENCRYPT_DELAY=$(shuf -i 1-720 -n 1)
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echo "Sleeping for $(($LETSENCRYPT_DELAY / 60)) hour(s) and $(($LETSENCRYPT_DELAY % 60)) minute(s)"
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sleep $((${LETSENCRYPT_DELAY} * 60)) # Convert to seconds
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echo "INFO: Attempting SSL certificate renewal"
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certbot --manual-public-ip-logging-ok renew
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chown -R $UID:$GID /etc/letsencrypt
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done
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