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@@ -0,0 +1,237 @@
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#!/bin/sh /etc/rc.common
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USE_PROCD=1
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START=99
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STOP=10
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NAME=tailscale-settings
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# Compare version strings: return 0 (true) if $1 >= $2
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version_gte() {
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awk -v a="${1%%-*}" -v b="${2%%-*}" 'BEGIN {
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split(a, av, ".")
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split(b, bv, ".")
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for (i=1; i<=3; i++) {
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ai = int(av[i]+0); bi = int(bv[i]+0)
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if (ai > bi) { exit 0 }
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if (ai < bi) { exit 1 }
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}
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exit 0
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}'
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return $?
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}
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# Add/remove DNS forward entry in dnsmasq for MagicDNS via OpenWrt
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setup_tailscale_dns_forward() {
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if [ ! -x /usr/sbin/tailscale ] && [ ! -x /usr/bin/tailscale ]; then
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return 0
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fi
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local entry="/.ts.net/100.100.100.100"
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local count
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count=$(uci -q get dhcp.@dnsmasq[0].server 2>/dev/null | tr ' ' '\n' | grep -Fxc "$entry" 2>/dev/null)
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if [ "$count" -gt 1 ]; then
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uci -q del_list dhcp.@dnsmasq[0].server="$entry"
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uci add_list dhcp.@dnsmasq[0].server="$entry"
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uci commit dhcp
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/etc/init.d/dnsmasq reload 2>/dev/null || /etc/init.d/dnsmasq restart 2>/dev/null
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logger -t "$NAME" "Collapsed duplicate DNS forward entries"
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elif [ "$count" -eq 0 ]; then
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uci add_list dhcp.@dnsmasq[0].server="$entry"
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uci commit dhcp
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/etc/init.d/dnsmasq reload 2>/dev/null || /etc/init.d/dnsmasq restart 2>/dev/null
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logger -t "$NAME" "Added DNS forward: $entry"
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fi
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}
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remove_tailscale_dns_forward() {
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local entry="/.ts.net/100.100.100.100"
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local idx=0
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local removed=0
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while true; do
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local val
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val=$(uci -q get dhcp.@dnsmasq[0].server."${idx}" 2>/dev/null)
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[ -z "$val" ] && break
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if [ "$val" = "$entry" ]; then
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uci -q del_list dhcp.@dnsmasq[0].server="$entry"
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removed=1
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break
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fi
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idx=$((idx + 1))
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done
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if [ "$removed" = "1" ]; then
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uci commit dhcp
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/etc/init.d/dnsmasq reload 2>/dev/null || /etc/init.d/dnsmasq restart 2>/dev/null
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logger -t "$NAME" "Removed Tailscale DNS forward entry: $entry"
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fi
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}
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apply_settings() {
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local ts_bin
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if [ -x /usr/sbin/tailscale ]; then
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ts_bin=/usr/sbin/tailscale
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elif [ -x /usr/bin/tailscale ]; then
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ts_bin=/usr/bin/tailscale
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else
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logger -t "$NAME" "tailscale binary not found, skipping settings apply"
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return 0
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fi
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config_load tailscale
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local accept_routes advertise_exit_node exit_node exit_node_allow_lan_access
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local ssh shields_up runwebclient nosnat hostname
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local enable_relay relay_server_port disable_fw_config
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config_get accept_routes settings accept_routes '0'
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config_get advertise_exit_node settings advertise_exit_node '0'
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config_get exit_node settings exit_node ''
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config_get exit_node_allow_lan_access settings exit_node_allow_lan_access '0'
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config_get ssh settings ssh '0'
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config_get dns_mode settings dns_mode 'disabled'
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config_get shields_up settings shields_up '0'
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config_get runwebclient settings runwebclient '0'
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config_get nosnat settings nosnat '0'
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config_get hostname settings hostname ''
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config_get enable_relay settings enable_relay '0'
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config_get relay_server_port settings relay_server_port '40000'
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config_get disable_fw_config settings disable_fw_config '0'
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# Collect advertise_routes UCI list into comma-separated string
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local routes=""
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append_route() {
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if [ -z "$routes" ]; then
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routes="$1"
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else
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routes="$routes,$1"
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fi
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}
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config_list_foreach settings advertise_routes append_route
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# Build argument list for 'tailscale set'
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set -- set
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# --accept-routes
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[ "$accept_routes" = "1" ] \
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&& set -- "$@" --accept-routes=true \
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|| set -- "$@" --accept-routes=false
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# --advertise-exit-node (only when no exit node is selected)
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if [ "$advertise_exit_node" = "1" ] && [ -z "$exit_node" ]; then
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set -- "$@" --advertise-exit-node=true
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else
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set -- "$@" --advertise-exit-node=false
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fi
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# --exit-node-allow-lan-access (only when no exit node is selected)
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if [ -z "$exit_node" ]; then
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[ "$exit_node_allow_lan_access" = "1" ] \
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&& set -- "$@" --exit-node-allow-lan-access=true \
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|| set -- "$@" --exit-node-allow-lan-access=false
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fi
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# --ssh
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[ "$ssh" = "1" ] \
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&& set -- "$@" --ssh=true \
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|| set -- "$@" --ssh=false
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# --accept-dns based on dns_mode
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case "$dns_mode" in
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magicdns)
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set -- "$@" --accept-dns=true
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remove_tailscale_dns_forward
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;;
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openwrt_forward)
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set -- "$@" --accept-dns=false
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setup_tailscale_dns_forward
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;;
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*)
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# disabled (default)
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set -- "$@" --accept-dns=false
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remove_tailscale_dns_forward
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;;
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esac
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# --shields-up
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[ "$shields_up" = "1" ] \
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&& set -- "$@" --shields-up=true \
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|| set -- "$@" --shields-up=false
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# --webclient
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[ "$runwebclient" = "1" ] \
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&& set -- "$@" --webclient=true \
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|| set -- "$@" --webclient=false
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# --snat-subnet-routes (inverse of nosnat)
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[ "$nosnat" = "1" ] \
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&& set -- "$@" --snat-subnet-routes=false \
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|| set -- "$@" --snat-subnet-routes=true
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# --advertise-routes (comma-separated, empty clears routes)
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set -- "$@" "--advertise-routes=$routes"
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# --exit-node (empty clears the exit node)
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set -- "$@" "--exit-node=$exit_node"
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# when an exit node is configured, always allow LAN access
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[ -n "$exit_node" ] && set -- "$@" --exit-node-allow-lan-access=true
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# --hostname (only set if non-empty)
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[ -n "$hostname" ] && set -- "$@" "--hostname=$hostname"
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# --relay-server-port (requires tailscale >= 1.90.5)
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local ts_ver
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ts_ver=$("$ts_bin" version 2>/dev/null | head -n1)
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if version_gte "$ts_ver" "1.90.5"; then
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if [ "$enable_relay" = "1" ]; then
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set -- "$@" "--relay-server-port=${relay_server_port:-40000}"
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else
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set -- "$@" "--relay-server-port="
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fi
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fi
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# --netfilter-mode (only when disable_fw_config is enabled and tailscale init doesn't already handle it)
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if [ "$disable_fw_config" = "1" ]; then
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set -- "$@" --netfilter-mode=off
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fi
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logger -t "$NAME" "Applying settings"
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"$ts_bin" "$@"
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local ret=$?
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[ $ret -eq 0 ] \
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&& logger -t "$NAME" "Settings applied successfully" \
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|| logger -t "$NAME" "Failed to apply settings (exit code: $ret)"
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return $ret
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}
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handle_service_state() {
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config_load tailscale
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local service_enabled
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config_get service_enabled settings service_enabled '1'
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if [ "$service_enabled" = "0" ]; then
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logger -t "$NAME" "Service is disabled, stopping tailscale"
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/etc/init.d/tailscale stop 2>/dev/null
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/etc/init.d/tailscale disable 2>/dev/null
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killall tailscaled 2>/dev/null
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else
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logger -t "$NAME" "Service is enabled, ensuring tailscale is running"
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/etc/init.d/tailscale enable 2>/dev/null
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/etc/init.d/tailscale start 2>/dev/null
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apply_settings
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fi
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}
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start_service() {
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apply_settings
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}
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service_triggers() {
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procd_add_reload_trigger "tailscale"
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}
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reload_service() {
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handle_service_state
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}
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