131 lines
3.6 KiB
Bash
Executable File
131 lines
3.6 KiB
Bash
Executable File
#!/bin/sh
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set -e
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set -x
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AUTHORITY=certidude.@authority[0]
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# TODO: iterate over all authorities
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GATEWAY=$(uci get $AUTHORITY.gateway)
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COMMON_NAME=$(uci get system.@system[0].hostname)
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DIR=/etc/certidude/authority/$(uci get $AUTHORITY.hostname)
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mkdir -p $DIR
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AUTHORITY_PATH=$DIR/ca_cert.pem
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CERTIFICATE_PATH=$DIR/host_cert.pem
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REQUEST_PATH=$DIR/host_req.pem
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KEY_PATH=$DIR/host_key.pem
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KEY_TYPE=$(uci get $AUTHORITY.key_type)
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KEY_LENGTH=$(uci get $AUTHORITY.key_length)
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KEY_CURVE=$(uci get $AUTHORITY.key_curve)
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NTP_SERVERS=$(uci get system.ntp.server)
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logger -t certidude -s "Fetching time from NTP servers: $NTP_SERVERS"
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ntpd -q -n -d -p $NTP_SERVERS
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logger -t certidude -s "Time is now: $(date)"
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# If certificate file is there assume everything's set up
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if [ -f $CERTIFICATE_PATH ]; then
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SERIAL=$(openssl x509 -in $CERTIFICATE_PATH -noout -serial | cut -d "=" -f 2 | tr [A-F] [a-f])
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logger -t certidude -s "Certificate with serial $SERIAL already exists in $CERTIFICATE_PATH, attempting to bring up VPN tunnel..."
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exit 0
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fi
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#########################################
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### Generate private key if necessary ###
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#########################################
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if [ ! -f $KEY_PATH ]; then
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case $KEY_TYPE in
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rsa)
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logger -t certidude -s "Generating $KEY_LENGTH-bit RSA key..."
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openssl genrsa -out $KEY_PATH.part $KEY_LENGTH
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openssl rsa -in $KEY_PATH.part -noout
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;;
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ec)
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logger -t certidude -s "Generating $KEY_CURVE ECDSA key..."
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openssl ecparam -name $KEY_CURVE -genkey -noout -out $KEY_PATH.part
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;;
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*)
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logger -t certidude -s "Unsupported key type $KEY_TYPE"
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exit 255
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;;
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esac
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mv $KEY_PATH.part $KEY_PATH
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fi
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############################
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### Fetch CA certificate ###
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############################
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if [ ! -f $AUTHORITY_PATH ]; then
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logger -t certidude -s "Fetching CA certificate from $URL/api/certificate/"
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curl -f -s http://$(uci get $AUTHORITY.hostname)/api/certificate/ -o $AUTHORITY_PATH.part
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if [ $? -ne 0 ]; then
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logger -t certidude -s "Failed to receive CA certificate, server responded: $(cat $AUTHORITY_PATH.part)"
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exit 10
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fi
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openssl x509 -in $AUTHORITY_PATH.part -noout
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if [ $? -ne 0 ]; then
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logger -t certidude -s "Received invalid CA certificate"
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exit 11
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fi
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mv $AUTHORITY_PATH.part $AUTHORITY_PATH
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fi
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logger -t certidude -s "CA certificate md5sum: $(md5sum -b $AUTHORITY_PATH)"
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#####################################
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### Generate request if necessary ###
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#####################################
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if [ ! -f $REQUEST_PATH ]; then
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openssl req -new -sha256 -key $KEY_PATH -out $REQUEST_PATH.part -subj "/CN=$COMMON_NAME"
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mv $REQUEST_PATH.part $REQUEST_PATH
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fi
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logger -t certidude -s "Request md5sum is $(md5sum -b $REQUEST_PATH)"
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curl -f -L \
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-H "Content-Type: application/pkcs10" \
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--cacert $AUTHORITY_PATH \
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--data-binary @$REQUEST_PATH \
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https://$(uci get $AUTHORITY.hostname):8443/api/request/?autosign=true\&wait=yes -o $CERTIFICATE_PATH.part
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# TODO: Loop until we get exitcode 0
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# TODO: Use backoff time $((2\*X))
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if [ $? -ne 0 ]; then
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echo "Failed to fetch certificate"
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exit 21
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fi
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# Verify certificate
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openssl verify -CAfile $AUTHORITY_PATH $CERTIFICATE_PATH.part
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if [ $? -ne 0 ]; then
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logger -t certidude -s "Received bogus certificate!"
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exit 22
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fi
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logger -t certidude -s "Certificate md5sum: $(md5sum -b $CERTIFICATE_PATH.part)"
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uci commit
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mv $CERTIFICATE_PATH.part $CERTIFICATE_PATH
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# Start services
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logger -t certidude -s "Starting IPSec IKEv2 daemon..."
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/etc/init.d/ipsec enable
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/etc/init.d/ipsec restart
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