projects / people / pmueller / ipfire-2.x.git / blame
| Commit | Line | Data |
|---|---|---|
| bd42f9f9 EK |
1 | #!/bin/bash |
| 2 | ############################################################################### | |
| 3 | # # | |
| 4 | # IPFire.org - A linux based firewall # | |
| 5 | # Copyright (C) 2018 IPFire Team <erik.kapfer@ipfire.org> # | |
| 6 | # # | |
| 7 | # This program is free software: you can redistribute it and/or modify # | |
| 8 | # it under the terms of the GNU General Public License as published by # | |
| 9 | # the Free Software Foundation, either version 3 of the License, or # | |
| 10 | # (at your option) any later version. # | |
| 11 | # # | |
| 12 | # This program is distributed in the hope that it will be useful, # | |
| 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of # | |
| 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # | |
| 15 | # GNU General Public License for more details. # | |
| 16 | # # | |
| 17 | # You should have received a copy of the GNU General Public License # | |
| 18 | # along with this program. If not, see <http://www.gnu.org/licenses/>. # | |
| 19 | # # | |
| 20 | ############################################################################### | |
| 21 | ||
| 22 | ############################################################################### | |
| 23 | # # | |
| 24 | # Script Location/Name: /etc/fcron.daily/openvpn-crl-updater # | |
| 25 | # # | |
| 26 | # Description: This script checks the "Next Update:" field of the CRL # | |
| 27 | # and renews it if needed, which prevents the expiration of OpenVPNs CRL. # | |
| 28 | # With OpenVPN 2.4.x the CRL handling has been refactored, # | |
| 29 | # whereby the verification logic has been removed # | |
| 30 | # from ssl_verify_<backend>.c . # | |
| 31 | # # | |
| 32 | # Run Information: If OpenVPNs CRL is present, # | |
| 33 | # this script provides a cronjob which checks daily if an update # | |
| 34 | # of the CRL is needed. If the expiring date reaches the value # | |
| 35 | # (defined in the 'UPDATE' variable in days) before the CRL expiration, # | |
| 36 | # an openssl command will be executed to renew the CRL. # | |
| 37 | # Script execution will be logged into /var/log/messages. # | |
| 38 | # # | |
| 39 | ############################################################################### | |
| 40 | ||
| 41 | ## Paths | |
| 42 | OVPN="/var/ipfire/ovpn" | |
| 43 | CRL="${OVPN}/crls/cacrl.pem" | |
| 44 | CAKEY="${OVPN}/ca/cakey.pem" | |
| 45 | CACERT="${OVPN}/ca/cacert.pem" | |
| 46 | OPENSSLCONF="${OVPN}/openssl/ovpn.cnf" | |
| 47 | ||
| 48 | # Check if CRL is presant or if OpenVPN is active | |
| 49 | if [ ! -e "${CAKEY}" ]; then | |
| 50 | exit 0; | |
| 51 | fi | |
| 52 | ||
| 53 | ## Values | |
| 54 | # Actual time in epoch format | |
| 55 | NOW="$(date +%s)" | |
| 56 | ||
| 57 | # Investigate CRLs 'Next Update' date | |
| 58 | EXPIRES_CRL="$(openssl crl -in "${CRL}" -text | grep -oP 'Next Update: *\K.*')" | |
| 59 | ||
| 60 | # Convert 'Next Update:' date from epoch to seconds | |
| 61 | EXPIRES_AT="$(date -d "${EXPIRES_CRL}" "+%s")" | |
| 62 | ||
| 63 | # Seconds left until CRL expires | |
| 64 | EXPIRINGDATEINSEC="$(( EXPIRES_AT - NOW ))" | |
| 65 | ||
| 66 | # Day in seconds to calculate | |
| 67 | DAYINSEC="86400" | |
| 68 | ||
| 69 | # Convert seconds to days | |
| 70 | NEXTUPDATE="$(( EXPIRINGDATEINSEC / DAYINSEC ))" | |
| 71 | ||
| 72 | # Update of the CRL in days before CRL expiring date | |
| 73 | UPDATE="14" | |
| 74 | ||
| 75 | ||
| 76 | ## Mainpart | |
| 77 | # Check if OpenVPNs CRL needs to be renewed | |
| 78 | if [ ${NEXTUPDATE} -le ${UPDATE} ]; then | |
| 79 | if openssl ca -gencrl -keyfile "${CAKEY}" -cert "${CACERT}" -out "${CRL}" -config "${OPENSSLCONF}"; then | |
| 80 | logger -t openvpn "CRL has been updated" | |
| 81 | else | |
| 82 | logger -t openvpn "error: Could not update CRL" | |
| 83 | fi | |
| 84 | fi | |
| 85 | ||
| 86 | exit 0 | |
| 87 | ||
| 88 | ||
| 89 | # EOF | |
| 90 |