852d404c12
* Instead of storing just a server_url which was necessary to
regenerate the OpenVPN configs, instead store an env file.
* Move all the env parsing to `ovpn_genconfig` so that it can be re-run
from genconfig instead of from `ovpn_init`.
* Remove all the parsing and env defaults except for genconfig.
NOTE: This breaks the older config method, uesrs will need to re-run
genconfig with an arg[1] as the previous server_url, this will create
the necessary env file the rest of the tools expect.
Example recovery for legacy users:
host$ docker run --rm -it kylemanna/openvpn bash -l
container# ovpn_genconfig $(cat /etc/openvpn/server_url)
76 lines
1.6 KiB
Bash
Executable File
76 lines
1.6 KiB
Bash
Executable File
#!/bin/bash
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#
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# Generate OpenVPN configs
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#
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set -ex
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OVPN_ENV=$OPENVPN/ovpn_env.sh
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# Import defaults if present
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[ -r "$OVPN_ENV" ] && source "$OVPN_ENV"
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# Override config if set
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[ -n "$1" ] && OVPN_SERVER_URL="$1"
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# Server name is in the form "udp://vpn.example.com:1194"
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if [[ "$OVPN_SERVER_URL" =~ ^((udp|tcp)://)?([0-9a-zA-Z\.]+)(:([0-9]+))?$ ]]; then
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OVPN_PROTO=${BASH_REMATCH[2]};
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OVPN_CN=${BASH_REMATCH[3]};
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OVPN_PORT=${BASH_REMATCH[5]};
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else
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echo "Common name not specified"
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exit 1
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fi
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# Apply defaults
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[ -z "$OVPN_PROTO" ] && OVPN_PROTO=udp
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[ -z "$OVPN_PORT" ] && OVPN_PORT=1194
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# Preserve config
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if [ -f "$OVPN_ENV" ]; then
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bak_env=$OVPN_ENV.$(date +%s).bak
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echo "Backing up $OVPN_ENV -> $bak_env"
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mv "$OVPN_ENV" "$bak_env"
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fi
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export OVPN_SERVER_URL OVPN_ENV OVPN_PROTO OVPN_CN OVPN_PORT
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env | grep ^OVPN_ > "$OVPN_ENV"
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conf=$OPENVPN/openvpn.conf
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if [ -f "$conf" ]; then
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bak=$conf.$(date +%s).bak
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echo "Backing up $conf -> $bak"
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mv "$conf" "$bak"
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fi
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cat > "$conf" <<EOF
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server 192.168.255.0 255.255.255.0
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verb 3
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#duplicate-cn
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key $EASYRSA_PKI/private/$OVPN_CN.key
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ca $EASYRSA_PKI/ca.crt
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cert $EASYRSA_PKI/issued/$OVPN_CN.crt
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dh $EASYRSA_PKI/dh.pem
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tls-auth $EASYRSA_PKI/ta.key
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key-direction 0
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keepalive 10 60
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persist-key
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persist-tun
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push "dhcp-option DNS 8.8.4.4"
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push "dhcp-option DNS 8.8.8.8"
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client-config-dir $OPENVPN/ccd
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route 192.168.254.0 255.255.255.0
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proto $OVPN_PROTO
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port $OVPN_PORT
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dev tun0
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status /tmp/openvpn-status.log
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EOF
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# Clean-up duplicate configs (always return success)
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diff -q "$bak_env" "$OVPN_ENV" 2> /dev/null && rm "$bak_env" || true
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diff -q "$bak" "$conf" 2> /dev/null && rm "$bak" || true
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