82 lines
3.0 KiB
Bash
Executable File
82 lines
3.0 KiB
Bash
Executable File
#! /bin/bash
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. "/home/alex/code/ca-scripts/lib/ca-functions"
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usage() {
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cat <<__EOT__
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Usage: $PROGNAME [options] <common name>|<path to certificate>
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Options:
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-h, --help Print this helpful message!
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-f, --config FILE Use config file instead of $CONFFILE
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-t, --type TYPE Certificate type: "server" (default), "client" or "user"
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-d, --days DAYS Renew certificate for DAYS days instead of CA_CRT_DAYS
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__EOT__
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}
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short="hf:t:d:"
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long="help,config:,type:,days:"
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opts=$( getopt -o "$short" -l "$long" -n "$PROGNAME" -- "$@" )
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if [ 0 -ne $? ]; then echo; usage; exit 1; fi
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eval set -- "$opts";
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while :; do
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case "$1" in
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-h|--help) usage; exit 0;;
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-f|--config) shift; CONFFILE="$1"; shift;;
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-t|--type) shift; USER_CA_CRT_TYPE="$1"; shift;;
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-d|--days) shift; USER_CA_CRT_DAYS="$1"; shift;;
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--) shift; break;;
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*) echo "Unknown value '$1'"; exit 1;;
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esac
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done
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ca_load_conf
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CNF_NAME=$( ca_find_cnf "$1" )
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CRT="$CA_HOME/crt/$CNF_NAME.crt"
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# make sure that configuration files are present as expected
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if [ ! -f "$CA_HOME/cnf/$CNF_NAME.ext.cnf" ]; then
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error "Couldn't find extensions in $CA_HOME/cnf/$CNF_NAME-ext.cnf"
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fi
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# according to the below URL we should create the new CRT using the old CSR
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# and with the same serial as the previous certificate.
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# http://blog.fupps.com/2007/11/30/x509ssl-certificate-prolongation/
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# After some fun googling, I found the following URL which tells us how...
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# http://ca.dutchgrid.nl/info/CA_gymnastics.html
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# XXX: this is only *really* relevant for certs that have been used for code
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# or e-mail encryption. should we regenerate client/server certs entirely?
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# ... for the moment there's always the revoke/recreate route for people.
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# acquire required info from old certificate
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ENDDATE=$( openssl x509 -in "$CRT" -noout -enddate | cut -d= -f2 )
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SERIAL=$( openssl x509 -in "$CRT" -noout -serial | cut -d= -f2 )
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# work out new expiry date based on expiry date of current cert
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# these dates are "<year> <day of year>"
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export TZ=UTC
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NOWYEAR=$( date +%Y )
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NOWDAYS=$( date +%j )
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# XXX: this only works with GNU date, BSD portability fail.
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ENDYEAR=$( date +%Y -d "$ENDDATE + $CA_CRT_DAYS days" )
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ENDDAYS=$( date +%j -d "$ENDDATE + $CA_CRT_DAYS days" )
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CERTDATE=$( date +%Y-%m-%d -d "$ENDDATE" )
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# and this does the maths to work out how many days there are from now
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# (when we're creating the new cert) to the new expiry date
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DAYS=$(( ($ENDYEAR-$NOWYEAR)*365 + ($ENDDAYS-$NOWDAYS) ))
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# Now perform required CA gymnastics ;p
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openssl x509 -req -set_serial "0x$SERIAL" -days "$DAYS" \
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-CA "$CA_HOME/crt/$CA_NAME.ca.crt" \
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-CAkey "$CA_HOME/key/$CA_NAME.ca.key" \
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-extfile "$CA_HOME/cfg/$CNF_NAME.ext.cnf" \
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-out "$CA_HOME/crt/$CNF_NAME.crt" \
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-in "$CA_HOME/csr/$CNF_NAME.csr"
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# This doesn't update the original certificate in the index, so let's do that
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mv "$CA_HOME/idx/$SERIAL.pem" "$CA_HOME/idx/$SERIAL.$CERTDATE.pem"
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cp "$CA_HOME/crt/$CNF_NAME.crt" "$CA_HOME/idx/$SERIAL.pem"
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