nuno revised this gist 2 months ago. Go to revision
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nuno revised this gist 2 months ago. Go to revision
1 file changed, 138 insertions
config.module.sh(file created)
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| 1 | + | #!/usr/bin/env bash | |
| 2 | + | ||
| 3 | + | # ============================================ | |
| 4 | + | # Lifecycle | |
| 5 | + | # ============================================ | |
| 6 | + | ||
| 7 | + | function config::on_load() { | |
| 8 | + | config::validate | |
| 9 | + | } | |
| 10 | + | ||
| 11 | + | # ============================================ | |
| 12 | + | # Server | |
| 13 | + | # ============================================ | |
| 14 | + | ||
| 15 | + | WG_INTERFACE="wg0" | |
| 16 | + | WG_CONFIG="$(ctx::wg)/${WG_INTERFACE}.conf" | |
| 17 | + | WG_SERVER_PUBLIC_KEY_FILE="$(ctx::wg)/server_public.key" | |
| 18 | + | WG_SERVER_PRIVATE_KEY_FILE="$(ctx::wg)/server_private.key" | |
| 19 | + | WG_ENDPOINT="wg.krilio.net:51820" | |
| 20 | + | WG_DNS="10.0.0.103" | |
| 21 | + | WG_LISTEN_PORT="51820" | |
| 22 | + | WG_SUBNET="10.1.0.0/16" | |
| 23 | + | WG_LAN="10.0.0.0/24" | |
| 24 | + | ||
| 25 | + | # ============================================ | |
| 26 | + | # Device Type → Subnet Mapping | |
| 27 | + | # ============================================ | |
| 28 | + | ||
| 29 | + | declare -gA DEVICE_SUBNETS=( | |
| 30 | + | [desktop]="10.1.1" | |
| 31 | + | [laptop]="10.1.2" | |
| 32 | + | [phone]="10.1.3" | |
| 33 | + | [tablet]="10.1.4" | |
| 34 | + | [guest]="10.1.100" | |
| 35 | + | ) | |
| 36 | + | ||
| 37 | + | # ============================================ | |
| 38 | + | # Tunnel Modes | |
| 39 | + | # ============================================ | |
| 40 | + | ||
| 41 | + | # split — route only VPN subnet + LAN through WireGuard | |
| 42 | + | # full — route all traffic through WireGuard | |
| 43 | + | WG_TUNNEL_SPLIT="${WG_SUBNET}, ${WG_LAN}" | |
| 44 | + | WG_TUNNEL_FULL="0.0.0.0/0, ::/0" | |
| 45 | + | ||
| 46 | + | # Default tunnel mode per device type | |
| 47 | + | declare -gA DEVICE_TUNNEL_MODE=( | |
| 48 | + | [desktop]="split" | |
| 49 | + | [laptop]="split" | |
| 50 | + | [phone]="split" | |
| 51 | + | [tablet]="split" | |
| 52 | + | [guest]="split" | |
| 53 | + | ) | |
| 54 | + | ||
| 55 | + | # ============================================ | |
| 56 | + | # Accessors | |
| 57 | + | # ============================================ | |
| 58 | + | ||
| 59 | + | function config::interface() { echo "$WG_INTERFACE"; } | |
| 60 | + | function config::config_file() { echo "$WG_CONFIG"; } | |
| 61 | + | function config::endpoint() { echo "$WG_ENDPOINT"; } | |
| 62 | + | function config::dns() { echo "$WG_DNS"; } | |
| 63 | + | function config::listen_port() { echo "$WG_LISTEN_PORT"; } | |
| 64 | + | function config::subnet() { echo "$WG_SUBNET"; } | |
| 65 | + | function config::lan() { echo "$WG_LAN"; } | |
| 66 | + | function config::tunnel_split() { echo "$WG_TUNNEL_SPLIT"; } | |
| 67 | + | function config::tunnel_full() { echo "$WG_TUNNEL_FULL"; } | |
| 68 | + | ||
| 69 | + | function config::server_public_key() { | |
| 70 | + | cat "$WG_SERVER_PUBLIC_KEY_FILE" | |
| 71 | + | } | |
| 72 | + | ||
| 73 | + | function config::device_types() { | |
| 74 | + | local types | |
| 75 | + | { set +u; types="${!DEVICE_SUBNETS[@]}"; set -u; } | |
| 76 | + | echo "$types" | |
| 77 | + | } | |
| 78 | + | ||
| 79 | + | function config::is_valid_type() { | |
| 80 | + | local type="$1" | |
| 81 | + | local subnet | |
| 82 | + | subnet=$(config::subnet_for "$type") | |
| 83 | + | [[ -n "$subnet" ]] | |
| 84 | + | } | |
| 85 | + | ||
| 86 | + | function config::subnet_for() { | |
| 87 | + | local type="$1" | |
| 88 | + | local result | |
| 89 | + | { set +u; result="${DEVICE_SUBNETS[$type]:-}"; set -u; } | |
| 90 | + | echo "$result" | |
| 91 | + | } | |
| 92 | + | ||
| 93 | + | function config::default_tunnel_for() { | |
| 94 | + | local type="$1" | |
| 95 | + | local result | |
| 96 | + | { set +u; result="${DEVICE_TUNNEL_MODE[$type]:-split}"; set -u; } | |
| 97 | + | echo "$result" | |
| 98 | + | } | |
| 99 | + | ||
| 100 | + | function config::allowed_ips_for() { | |
| 101 | + | local type="$1" | |
| 102 | + | local tunnel="${2:-}" | |
| 103 | + | ||
| 104 | + | # If tunnel mode not specified, use device default | |
| 105 | + | if [[ -z "$tunnel" ]]; then | |
| 106 | + | tunnel=$(config::default_tunnel_for "$type") | |
| 107 | + | fi | |
| 108 | + | ||
| 109 | + | case "$tunnel" in | |
| 110 | + | full) echo "$WG_TUNNEL_FULL" ;; | |
| 111 | + | split) echo "$WG_TUNNEL_SPLIT" ;; | |
| 112 | + | *) | |
| 113 | + | log::error "Unknown tunnel mode: ${tunnel} (use 'split' or 'full')" | |
| 114 | + | return 1 | |
| 115 | + | ;; | |
| 116 | + | esac | |
| 117 | + | } | |
| 118 | + | ||
| 119 | + | # ============================================ | |
| 120 | + | # Validation | |
| 121 | + | # ============================================ | |
| 122 | + | ||
| 123 | + | function config::validate() { | |
| 124 | + | if [[ ! -f "$WG_SERVER_PUBLIC_KEY_FILE" ]]; then | |
| 125 | + | log::error "Server public key not found: ${WG_SERVER_PUBLIC_KEY_FILE}" | |
| 126 | + | exit 1 | |
| 127 | + | fi | |
| 128 | + | ||
| 129 | + | if [[ ! -f "$WG_SERVER_PRIVATE_KEY_FILE" ]]; then | |
| 130 | + | log::error "Server private key not found: ${WG_SERVER_PRIVATE_KEY_FILE}" | |
| 131 | + | exit 1 | |
| 132 | + | fi | |
| 133 | + | ||
| 134 | + | if [[ ! -f "$WG_CONFIG" ]]; then | |
| 135 | + | log::error "WireGuard config not found: ${WG_CONFIG}" | |
| 136 | + | exit 1 | |
| 137 | + | fi | |
| 138 | + | } | |
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