dissimulo
0eb605a835
- tmux-ip: show the first directly-held public/WAN IP on a non-tunnel interface, else the LAN/private IP. No external 'what's my IP' lookup and no DigitalOcean special-case (a droplet's eth0 public IP is found by the same interface scan); RFC1918/link-local/CGNAT classed as not-WAN, so a NAT'd box shows its LAN IP. - tmux-net: show ✕ when there's no local IP and no VPN tunnel (offline). VPN ⇡ overlay unchanged. - .tmux.conf: window-status icon + path now native tmux formats (no per-redraw #() forks); tmux-window-icon kept as fallback.
70 lines
2.2 KiB
Bash
Executable File
70 lines
2.2 KiB
Bash
Executable File
#!/bin/bash
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#
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# Print the "best" IP for the tmux status bar.
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#
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# Shows a directly-held public/WAN IP when the machine has one on an interface,
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# otherwise its LAN/private IP. No external "what's my IP" lookup -- a NAT'd box
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# shows its LAN IP, never the gateway's egress. Works the same everywhere: a box
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# with a public IP on a NIC (incl. a cloud droplet's eth0) shows that WAN IP; a
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# NAT'd box shows its LAN IP. The VPN overlay is added separately by tmux-net via
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# tmux-vpn-ip and is untouched here.
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#
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set -u
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# This machine's own non-loopback IPv4 addresses, one per line. VPN tunnels are
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# excluded (tmux-net surfaces the VPN address separately as the ⇡ segment).
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list_ipv4() {
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if command -v ip >/dev/null 2>&1; then
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ip -4 -o addr show scope global 2>/dev/null \
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| awk '$2 !~ /^(tun|wg|ppp|tap)/ {print $4}' | cut -d/ -f1
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elif hostname -I >/dev/null 2>&1; then
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hostname -I 2>/dev/null | tr ' ' '\n'
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else
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ifconfig 2>/dev/null | awk '/inet /{print $2}'
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fi | grep -E '^([0-9]{1,3}\.){3}[0-9]{1,3}$' | grep -v '^127\.'
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}
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# RFC1918 / link-local / CGNAT -- not a directly-routable WAN address.
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is_private_ipv4() {
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case "$1" in
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10.*|192.168.*|169.254.*) return 0 ;;
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172.1[6-9].*|172.2[0-9].*|172.3[01].*) return 0 ;;
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100.6[4-9].*|100.[7-9][0-9].*|100.1[01][0-9].*|100.12[0-7].*) return 0 ;;
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*) return 1 ;;
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esac
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}
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# First directly-held public/WAN IP, if the machine has one on an interface.
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public_ip() {
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local ip
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while IFS= read -r ip; do
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[ -n "$ip" ] || continue
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is_private_ipv4 "$ip" || { printf '%s\n' "$ip"; return 0; }
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done <<EOF
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$(list_ipv4)
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EOF
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return 1
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}
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# Fallback: the machine's primary interface IP (covers macOS and odd setups).
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print_local_ip() {
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local iface ip
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if command -v ipconfig >/dev/null 2>&1; then
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for iface in en0 en1 en2; do
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ip=$(ipconfig getifaddr "$iface" 2>/dev/null) || true
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[ -n "${ip:-}" ] && { printf '%s\n' "$ip"; return 0; }
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done
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fi
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if hostname -I >/dev/null 2>&1; then
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hostname -I | awk '{print $1}'
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return 0
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fi
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ifconfig 2>/dev/null | awk '/inet /{ if ($2 != "127.0.0.1") { print $2; exit } }'
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}
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# A directly-held public/WAN IP if the box has one, else the LAN IP.
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ip=$(public_ip || true)
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[ -z "${ip:-}" ] && ip=$(print_local_ip)
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printf '%s\n' "${ip:-}"
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