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Enable disabling ipv6, cleanup

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This commit is contained in:
Stephen Seo 2024-02-19 12:15:14 +09:00
parent 6b0fe7f6c1
commit 9e1638ba4c
1 changed files with 27 additions and 7 deletions
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34
wireguardConfigGenerator.sh
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@ -20,6 +20,7 @@ function print_help {
echo "-u <subnet> - subnet to use (default 24). Mutually exclusive with \"-c\""
echo "-f <ipv4_fourth> - must use with \"-u\" to set partial fourth byte"
echo "-x <ipv6_template> - set template, \"x\" will be replaced (must be last)"
echo "-d - disable ipv6 addresses"
}
WGNAME="wg$(date | sha1sum | head -c 8)"
@ -37,9 +38,10 @@ CLIENT_COUNT_SET=0
WG_SUBNET_SET=0
IPV4_FOURTH_SET=0
IPV6_TEMPLATE="fc00::x"
IPV6_DISABLE=0
# OPTARG
while getopts 'hn:c:s:i:e:p:ko:u:f:x:' opt; do
while getopts 'hn:c:s:i:e:p:ko:u:f:x:d' opt; do
if [ "$opt" == "?" ]; then
print_help
exit 1
@ -86,6 +88,8 @@ while getopts 'hn:c:s:i:e:p:ko:u:f:x:' opt; do
IPV4_FOURTH_SET=1
elif [ "$opt" == "x" ]; then
IPV6_TEMPLATE="$OPTARG"
elif [ "$opt" == "d" ]; then
IPV6_DISABLE=1
fi
done
@ -105,10 +109,10 @@ elif (( $CLIENT_COUNT_SET )) && (( $WG_SUBNET_SET )); then
elif (( $IPV4_FOURTH_SET )) && (( $WG_SUBNET_SET == 0 )); then
echo "ERROR: fourth byte set but \"-u\" not used!"
exit 13
elif ! [[ "$IPV6_TEMPLATE" =~ .*x$ ]]; then
elif ! (( IPV6_DISABLE)) && ! [[ "$IPV6_TEMPLATE" =~ .*x$ ]]; then
echo "ERROR: IPV6_TEMPLATE is invalid (does not end in x)!"
exit 14
elif ! [[ "$IPV6_TEMPLATE" =~ ^fc.*$ ]] && ! [[ "$IPV6_TEMPLATE" =~ ^fd.*$ ]]; then
elif ! (( IPV6_DISABLE)) && ! [[ "$IPV6_TEMPLATE" =~ ^fc.*$ ]] && ! [[ "$IPV6_TEMPLATE" =~ ^fd.*$ ]]; then
echo "ERROR: IPV6_TEMPLATE is invalid (not in local address range)!"
exit 15
fi
@ -156,6 +160,14 @@ mkdir -p "$HOME/temp"
TEMP_DIR=$(mktemp -d -p "$HOME/temp")
if (( IPV6_DISABLE )); then
SERVER_ADDRESS_STR="${IPV4_FIRST}.${IPV4_SECOND}.${IPV4_THIRD}.$(( 1 | $IPV4_FOURTH ))/$WG_SUBNET"
PEER_SERVER_ADDRESS_STR="${IPV4_FIRST}.${IPV4_SECOND}.${IPV4_THIRD}.$(( 1 | $IPV4_FOURTH ))/32"
else
SERVER_ADDRESS_STR="${IPV4_FIRST}.${IPV4_SECOND}.${IPV4_THIRD}.$(( 1 | $IPV4_FOURTH ))/$WG_SUBNET, $(to_ipv6_from_template 1)/${IPV6_SUBNET}"
PEER_SERVER_ADDRESS_STR="${IPV4_FIRST}.${IPV4_SECOND}.${IPV4_THIRD}.$(( 1 | $IPV4_FOURTH ))/32, $(to_ipv6_from_template 1)/128"
fi
# first create server config
SERVER_CONF="${TEMP_DIR}/${WGNAME}serv.conf"
SERVER_PRK="$(wg genkey)"
@ -164,7 +176,7 @@ SERVER_PUB="$(echo -n ${SERVER_PRK} | wg pubkey)"
echo "Creating server conf (will be appended to with client info)..."
cat >> "${SERVER_CONF}" <<EOF
[Interface]
Address = ${IPV4_FIRST}.${IPV4_SECOND}.${IPV4_THIRD}.$(( 1 | $IPV4_FOURTH ))/$WG_SUBNET, $(to_ipv6_from_template 1)/${IPV6_SUBNET}
Address = ${SERVER_ADDRESS_STR}
ListenPort = ${SERVER_LISTEN_PORT}
PrivateKey = ${SERVER_PRK}
EOF
@ -176,25 +188,33 @@ for ((i = 0; i < $CLIENT_COUNT; ++i)); do
CLIENT_PUB="$(echo -n ${CLIENT_PRK} | wg pubkey)"
CLIENT_PRE="$(wg genpsk)"
if (( IPV6_DISABLE )); then
CLIENT_ADDRESS_STR="${IPV4_FIRST}.${IPV4_SECOND}.${IPV4_THIRD}.$(( (i + 2) | $IPV4_FOURTH ))/$WG_SUBNET"
PEER_CLIENT_ADDRESS_STR="${IPV4_FIRST}.${IPV4_SECOND}.${IPV4_THIRD}.$(( (i + 2) | $IPV4_FOURTH ))/32"
else
CLIENT_ADDRESS_STR="${IPV4_FIRST}.${IPV4_SECOND}.${IPV4_THIRD}.$(( (i + 2) | $IPV4_FOURTH ))/$WG_SUBNET, $(to_ipv6_from_template $(($i + 2)) )/${IPV6_SUBNET}"
PEER_CLIENT_ADDRESS_STR="${IPV4_FIRST}.${IPV4_SECOND}.${IPV4_THIRD}.$(( (i + 2) | $IPV4_FOURTH ))/32, $(to_ipv6_from_template $(($i + 2)) )/128"
fi
echo "Appending client $((i + 1)) to server conf..."
cat >> "${SERVER_CONF}" <<EOF
[Peer]
PublicKey = ${CLIENT_PUB}
PresharedKey = ${CLIENT_PRE}
AllowedIPs = ${IPV4_FIRST}.${IPV4_SECOND}.${IPV4_THIRD}.$(( (i + 2) | $IPV4_FOURTH ))/32, $(to_ipv6_from_template $(($i + 2)) )/128
AllowedIPs = ${PEER_CLIENT_ADDRESS_STR}
EOF
echo "Creating client $((i + 1)) conf..."
cat >> "${CLIENT_CONF}" <<EOF
[Interface]
Address = ${IPV4_FIRST}.${IPV4_SECOND}.${IPV4_THIRD}.$(( (i + 2) | $IPV4_FOURTH ))/$WG_SUBNET, $(to_ipv6_from_template $(($i + 2)) )/${IPV6_SUBNET}
Address = ${CLIENT_ADDRESS_STR}
PrivateKey = ${CLIENT_PRK}
[Peer]
PublicKey = ${SERVER_PUB}
PresharedKey = ${CLIENT_PRE}
AllowedIPs = ${IPV4_FIRST}.${IPV4_SECOND}.${IPV4_THIRD}.$(( 1 | $IPV4_FOURTH ))/32, $(to_ipv6_from_template 1)/128
AllowedIPs = ${PEER_SERVER_ADDRESS_STR}
Endpoint = ${SERVER_ENDPOINT}:${SERVER_LISTEN_PORT}
EOF