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Update IKEv2 script

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- Cleanup
This commit is contained in:
hwdsl2 2021-07-30 08:47:10 -05:00
parent c6cfd1fe49
commit 2c3f4e20a5
1 changed files with 75 additions and 101 deletions
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176
extras/ikev2setup.sh
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@ -81,6 +81,20 @@ check_os_type() {
fi
}
confirm_or_abort() {
printf '%s' "$1"
read -r response
case $response in
[yY][eE][sS]|[yY])
echo
;;
*)
echo "Abort. No changes were made."
exit 1
;;
esac
}
get_update_url() {
update_url=vpnupgrade
if [ "$os_type" = "centos" ] || [ "$os_type" = "rhel" ] || [ "$os_type" = "rocky" ] || [ "$os_type" = "alma" ]; then
@ -133,10 +147,19 @@ check_container() {
fi
}
show_header() {
cat <<'EOF'
IKEv2 Script Copyright (c) 2020-2021 Lin Song 30 July 2021
EOF
}
show_usage() {
if [ -n "$1" ]; then
echo "Error: $1" >&2;
fi
show_header
cat 1>&2 <<EOF
Usage: bash $0 [options]
@ -160,16 +183,24 @@ check_ikev2_exists() {
}
check_client_name() {
! { [ "${#client_name}" -gt "64" ] || printf '%s' "$client_name" | LC_ALL=C grep -q '[^A-Za-z0-9_-]\+' \
|| case $client_name in -*) true;; *) false;; esac; }
! { [ "${#1}" -gt "64" ] || printf '%s' "$1" | LC_ALL=C grep -q '[^A-Za-z0-9_-]\+' \
|| case $1 in -*) true;; *) false;; esac; }
}
check_client_cert_exists() {
certutil -L -d sql:/etc/ipsec.d -n "$client_name" >/dev/null 2>&1
check_cert_exists() {
certutil -L -d sql:/etc/ipsec.d -n "$1" >/dev/null 2>&1
}
check_client_cert_status() {
cert_status=$(certutil -V -u C -d sql:/etc/ipsec.d -n "$client_name")
check_cert_exists_and_exit() {
if certutil -L -d sql:/etc/ipsec.d -n "$1" >/dev/null 2>&1; then
echo "Error: Certificate '$1' already exists." >&2
echo "Abort. No changes were made." >&2
exit 1
fi
}
check_cert_status() {
cert_status=$(certutil -V -u C -d sql:/etc/ipsec.d -n "$1")
}
check_arguments() {
@ -182,22 +213,22 @@ check_arguments() {
show_usage "Invalid parameters. Specify only one of '--addclient', '--exportclient', '--listclients' or '--revokeclient'."
fi
if [ "$add_client" = "1" ]; then
check_ikev2_exists || exiterr "You must first set up IKEv2 before adding a new client."
if [ -z "$client_name" ] || ! check_client_name; then
check_ikev2_exists || exiterr "You must first set up IKEv2 before adding a client."
if [ -z "$client_name" ] || ! check_client_name "$client_name"; then
exiterr "Invalid client name. Use one word only, no special characters except '-' and '_'."
elif check_client_cert_exists; then
elif check_cert_exists "$client_name"; then
exiterr "Invalid client name. Client '$client_name' already exists."
fi
fi
if [ "$export_client" = "1" ]; then
check_ikev2_exists || exiterr "You must first set up IKEv2 before exporting a client configuration."
check_ikev2_exists || exiterr "You must first set up IKEv2 before exporting a client."
get_server_address
if [ -z "$client_name" ] || ! check_client_name \
if [ -z "$client_name" ] || ! check_client_name "$client_name" \
|| [ "$client_name" = "IKEv2 VPN CA" ] || [ "$client_name" = "$server_addr" ] \
|| ! check_client_cert_exists; then
|| ! check_cert_exists "$client_name"; then
exiterr "Invalid client name, or client does not exist."
fi
if ! check_client_cert_status; then
if ! check_cert_status "$client_name"; then
printf '%s' "Error: Certificate '$client_name' " >&2
if printf '%s' "$cert_status" | grep -q "revoked"; then
echo "has been revoked." >&2
@ -215,12 +246,12 @@ check_arguments() {
if [ "$revoke_client" = "1" ]; then
check_ikev2_exists || exiterr "You must first set up IKEv2 before revoking a client certificate."
get_server_address
if [ -z "$client_name" ] || ! check_client_name \
if [ -z "$client_name" ] || ! check_client_name "$client_name" \
|| [ "$client_name" = "IKEv2 VPN CA" ] || [ "$client_name" = "$server_addr" ] \
|| ! check_client_cert_exists; then
|| ! check_cert_exists "$client_name"; then
exiterr "Invalid client name, or client does not exist."
fi
if ! check_client_cert_status; then
if ! check_cert_status "$client_name"; then
printf '%s' "Error: Certificate '$client_name' " >&2
if printf '%s' "$cert_status" | grep -q "revoked"; then
echo "has already been revoked." >&2
@ -249,21 +280,7 @@ check_server_dns_name() {
check_custom_dns() {
if { [ -n "$VPN_DNS_SRV1" ] && ! check_ip "$VPN_DNS_SRV1"; } \
|| { [ -n "$VPN_DNS_SRV2" ] && ! check_ip "$VPN_DNS_SRV2"; } then
exiterr "The DNS server specified is invalid."
fi
}
check_ca_cert_exists() {
if certutil -L -d sql:/etc/ipsec.d -n "IKEv2 VPN CA" >/dev/null 2>&1; then
exiterr "Certificate 'IKEv2 VPN CA' already exists."
fi
}
check_server_cert_exists() {
if certutil -L -d sql:/etc/ipsec.d -n "$server_addr" >/dev/null 2>&1; then
echo "Error: Certificate '$server_addr' already exists." >&2
echo "Abort. No changes were made." >&2
exit 1
exiterr "Invalid DNS server(s)."
fi
}
@ -317,17 +334,7 @@ select_swan_update() {
else
echo " To update this Docker image, see: https://git.io/updatedockervpn"
echo
printf "Do you want to continue anyway? [y/N] "
read -r response
case $response in
[yY][eE][sS]|[yY])
echo
;;
*)
echo "Abort. No changes were made."
exit 1
;;
esac
confirm_or_abort "Do you want to continue anyway? [y/N] "
fi
fi
}
@ -441,8 +448,8 @@ enter_client_name() {
echo "Provide a name for the IKEv2 VPN client."
echo "Use one word only, no special characters except '-' and '_'."
read -rp "Client name: " client_name
while [ -z "$client_name" ] || ! check_client_name || check_client_cert_exists; do
if [ -z "$client_name" ] || ! check_client_name; then
while [ -z "$client_name" ] || ! check_client_name "$client_name" || check_cert_exists "$client_name"; do
if [ -z "$client_name" ] || ! check_client_name "$client_name"; then
echo "Invalid client name."
else
echo "Invalid client name. Client '$client_name' already exists."
@ -457,8 +464,8 @@ enter_client_name_with_defaults() {
echo "Use one word only, no special characters except '-' and '_'."
read -rp "Client name: [vpnclient] " client_name
[ -z "$client_name" ] && client_name=vpnclient
while ! check_client_name || check_client_cert_exists; do
if ! check_client_name; then
while ! check_client_name "$client_name" || check_cert_exists "$client_name"; do
if ! check_client_name "$client_name"; then
echo "Invalid client name."
else
echo "Invalid client name. Client '$client_name' already exists."
@ -474,12 +481,12 @@ enter_client_name_for() {
get_server_address
echo
read -rp "Enter the name of the IKEv2 client to $1: " client_name
while [ -z "$client_name" ] || ! check_client_name \
while [ -z "$client_name" ] || ! check_client_name "$client_name" \
|| [ "$client_name" = "IKEv2 VPN CA" ] || [ "$client_name" = "$server_addr" ] \
|| ! check_client_cert_exists || ! check_client_cert_status; do
if [ -z "$client_name" ] || ! check_client_name \
|| ! check_cert_exists "$client_name" || ! check_cert_status "$client_name"; do
if [ -z "$client_name" ] || ! check_client_name "$client_name" \
|| [ "$client_name" = "IKEv2 VPN CA" ] || [ "$client_name" = "$server_addr" ] \
|| ! check_client_cert_exists; then
|| ! check_cert_exists "$client_name"; then
echo "Invalid client name, or client does not exist."
else
printf '%s' "Error: Certificate '$client_name' "
@ -611,7 +618,6 @@ select_mobike() {
}
select_menu_option() {
echo
echo "IKEv2 is already set up on this server."
echo
echo "Select an option:"
@ -660,17 +666,7 @@ DNS server(s): $dns_servers
======================================
EOF
printf "Do you want to continue? [y/N] "
read -r response
case $response in
[yY][eE][sS]|[yY])
echo
;;
*)
echo "Abort. No changes were made."
exit 1
;;
esac
confirm_or_abort "Do you want to continue? [y/N] "
}
create_client_cert() {
@ -687,22 +683,12 @@ create_client_cert() {
create_p12_password() {
config_file="/etc/ipsec.d/.vpnconfig"
config_file_old="${export_dir}vpnclient.p12.password"
update_config=0
if grep -qs '^IKEV2_CONFIG_PASSWORD=.\+' "$config_file"; then
. "$config_file"
p12_password="$IKEV2_CONFIG_PASSWORD"
elif grep -qs '^IKEV2_CONFIG_PASSWORD=.\+' "$config_file_old"; then
. "$config_file_old"
p12_password="$IKEV2_CONFIG_PASSWORD"
/bin/rm -f "$config_file_old"
update_config=1
else
p12_password=$(LC_CTYPE=C tr -dc 'A-HJ-NPR-Za-km-z2-9' </dev/urandom 2>/dev/null | head -c 18)
[ -z "$p12_password" ] && exiterr "Could not generate a random password for .p12 file."
update_config=1
fi
if [ "$update_config" = "1" ]; then
mkdir -p /etc/ipsec.d
printf '%s\n' "IKEV2_CONFIG_PASSWORD='$p12_password'" >> "$config_file"
chmod 600 "$config_file"
@ -1198,42 +1184,20 @@ check_ipsec_conf() {
}
confirm_revoke_cert() {
echo
echo "WARNING: You have selected to revoke IKEv2 client certificate '$client_name'."
echo " After revocation, this certificate *cannot* be used by VPN client(s)"
echo " to connect to this VPN server."
echo
printf "Are you sure you want to revoke certificate '%s'? [y/N] " "$client_name"
read -r response
case $response in
[yY][eE][sS]|[yY])
echo
;;
*)
echo "Abort. No changes were made."
exit 1
;;
esac
confirm_or_abort "Are you sure you want to revoke '$client_name'? [y/N] "
}
confirm_remove_ikev2() {
echo
echo "WARNING: This option will remove IKEv2 from this VPN server, but keep the IPsec/L2TP"
echo " and IPsec/XAuth (\"Cisco IPsec\") modes, if installed. All IKEv2 configuration"
echo " including certificates and keys will be permanently deleted."
echo " This *cannot* be undone! "
echo
printf "Are you sure you want to remove IKEv2? [y/N] "
read -r response
case $response in
[yY][eE][sS]|[yY])
echo
;;
*)
echo "Abort. No changes were made."
exit 1
;;
esac
confirm_or_abort "Are you sure you want to remove IKEv2? [y/N] "
}
delete_ikev2_conf() {
@ -1320,6 +1284,7 @@ ikev2setup() {
get_export_dir
if [ "$add_client" = "1" ]; then
show_header
show_add_client
client_validity=120
create_client_cert
@ -1330,6 +1295,7 @@ ikev2setup() {
fi
if [ "$export_client" = "1" ]; then
show_header
show_export_client
export_client_config
print_client_exported
@ -1338,11 +1304,13 @@ ikev2setup() {
fi
if [ "$list_clients" = "1" ]; then
show_header
list_existing_clients
exit 0
fi
if [ "$revoke_client" = "1" ]; then
show_header
confirm_revoke_cert
create_crl
add_client_cert_to_crl
@ -1353,6 +1321,7 @@ ikev2setup() {
if [ "$remove_ikev2" = "1" ]; then
check_ipsec_conf
show_header
confirm_remove_ikev2
delete_ikev2_conf
if [ "$os_type" = "alpine" ]; then
@ -1366,6 +1335,7 @@ ikev2setup() {
fi
if check_ikev2_exists; then
show_header
select_menu_option
case $selected_option in
1)
@ -1393,6 +1363,7 @@ ikev2setup() {
;;
4)
enter_client_name_for revoke
echo
confirm_revoke_cert
create_crl
add_client_cert_to_crl
@ -1402,6 +1373,7 @@ ikev2setup() {
;;
5)
check_ipsec_conf
echo
confirm_remove_ikev2
delete_ikev2_conf
if [ "$os_type" = "alpine" ]; then
@ -1419,14 +1391,15 @@ ikev2setup() {
esac
fi
check_ca_cert_exists
check_cert_exists_and_exit "IKEv2 VPN CA"
check_swan_ver
if [ "$use_defaults" = "0" ]; then
select_swan_update
show_header
show_welcome
enter_server_address
check_server_cert_exists
check_cert_exists_and_exit "$server_addr"
enter_client_name_with_defaults
enter_client_cert_validity
enter_custom_dns
@ -1438,11 +1411,12 @@ ikev2setup() {
check_custom_dns
if [ -n "$VPN_CLIENT_NAME" ]; then
client_name="$VPN_CLIENT_NAME"
check_client_name || exiterr "Invalid client name. Use one word only, no special characters except '-' and '_'."
check_client_name "$client_name" \
|| exiterr "Invalid client name. Use one word only, no special characters except '-' and '_'."
else
client_name=vpnclient
fi
check_client_cert_exists && exiterr "Client '$client_name' already exists."
check_cert_exists "$client_name" && exiterr "Client '$client_name' already exists."
client_validity=120
show_start_setup
if [ -n "$VPN_DNS_NAME" ]; then
@ -1454,7 +1428,7 @@ ikev2setup() {
check_ip "$public_ip" || exiterr "Cannot detect this server's public IP."
server_addr="$public_ip"
fi
check_server_cert_exists
check_cert_exists_and_exit "$server_addr"
if [ -n "$VPN_DNS_SRV1" ] && [ -n "$VPN_DNS_SRV2" ]; then
dns_server_1="$VPN_DNS_SRV1"
dns_server_2="$VPN_DNS_SRV2"