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