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#!/bin/sh /etc/rc.common
USE_PROCD=1
START=30
STOP=51
stubby="/usr/sbin/stubby"
stubby_init="/etc/init.d/stubby"
stubby_config_dir="/var/etc/stubby"
stubby_config="$stubby_config_dir/stubby.yml"
stubby_pid_file="/var/run/stubby.pid"
stubby_manual_config="/etc/stubby/stubby.yml"
boot()
{
stubby_boot=1
rc_procd start_service
}
generate_config()
{
local config_file="$1"
local round_robin
local tls_authentication
local tls_query_padding_blocksize
local edns_client_subnet_private
local idle_timeout
local appdata_dir
local trust_anchors_backoff_time
local tls_connection_retries
local tls_backoff_time
local timeout
local dnssec_return_status
local dnssec_trust_anchors
local listen_addresses_section=0
local dns_transport_list_section=0
local upstream_recursive_servers_section=0
local command_line_arguments
local log_level
# Generate configuration. See: https://github.com/getdnsapi/stubby/blob/develop/stubby.yml.example
echo "# Autogenerated configuration from uci data" > "$config_file"
echo "resolution_type: GETDNS_RESOLUTION_STUB" >> "$config_file"
config_get round_robin "global" round_robin_upstreams "1"
echo "round_robin_upstreams: $round_robin" >> "$config_file"
config_get appdata_dir "global" appdata_dir "/var/lib/stubby"
echo "appdata_dir: \"$appdata_dir\"" >> "$config_file"
config_get trust_anchors_backoff_time "global" trust_anchors_backoff_time "2500"
echo "trust_anchors_backoff_time: $trust_anchors_backoff_time" >> "$config_file"
config_get tls_connection_retries "global" tls_connection_retries ""
if [ -n "$tls_connection_retries" ]; then
echo "tls_connection_retries: $tls_connection_retries" >> "$config_file"
fi
config_get tls_backoff_time "global" tls_backoff_time ""
if [ -n "$tls_backoff_time" ]; then
echo "tls_backoff_time: $tls_backoff_time" >> "$config_file"
fi
config_get timeout "global" timeout ""
if [ -n "$timeout" ]; then
echo "timeout: $timeout" >> "$config_file"
fi
config_get_bool tls_authentication "global" tls_authentication "1"
if [ "$tls_authentication" = "1" ]; then
echo "tls_authentication: GETDNS_AUTHENTICATION_REQUIRED" >> "$config_file"
else
echo "tls_authentication: GETDNS_AUTHENTICATION_NONE" >> "$config_file"
fi
config_get_bool dnssec_return_status "global" dnssec_return_status "0"
if [ "$dnssec_return_status" = "1" ]; then
echo "dnssec_return_status: GETDNS_EXTENSION_TRUE" >> "$config_file"
fi
config_get dnssec_trust_anchors "global" dnssec_trust_anchors ""
if [ -n "$dnssec_trust_anchors" ]; then
echo "dnssec_trust_anchors: \"$dnssec_trust_anchors\"" >> "$config_file"
fi
config_get tls_query_padding_blocksize "global" tls_query_padding_blocksize "128"
echo "tls_query_padding_blocksize: $tls_query_padding_blocksize" >> "$config_file"
config_get_bool edns_client_subnet_private "global" edns_client_subnet_private "1"
echo "edns_client_subnet_private: $edns_client_subnet_private" >> "$config_file"
config_get idle_timeout "global" idle_timeout "10000"
echo "idle_timeout: $idle_timeout" >> "$config_file"
handle_listen_address_value()
{
local value="$1"
if [ "$listen_addresses_section" = 0 ]; then
echo "listen_addresses:" >> "$config_file"
listen_addresses_section=1
fi
echo " - $value" >> "$config_file"
}
config_list_foreach "global" listen_address handle_listen_address_value
handle_dns_transport_list_value()
{
local value="$1"
if [ "$dns_transport_list_section" = 0 ]; then
echo "dns_transport_list:" >> "$config_file"
dns_transport_list_section=1
fi
echo " - $value" >> "$config_file"
}
config_list_foreach "global" dns_transport handle_dns_transport_list_value
handle_resolver()
{
local config=$1
local address
local tls_auth_name
local tls_pubkey_pinset_section=0
if [ "$upstream_recursive_servers_section" = 0 ]; then
echo "upstream_recursive_servers:" >> "$config_file"
upstream_recursive_servers_section=1
fi
config_get address "$config" address
config_get tls_auth_name "$config" tls_auth_name
echo " - address_data: $address" >> "$config_file"
echo " tls_auth_name: \"$tls_auth_name\"" >> "$config_file"
handle_resolver_spki()
{
local val="$1"
local digest="${val%/*}"
local value="${val#*/}"
if [ "$tls_pubkey_pinset_section" = 0 ]; then
echo " tls_pubkey_pinset:" >> "$config_file"
tls_pubkey_pinset_section=1
fi
echo " - digest: \"$digest\"" >> "$config_file"
echo " value: $value" >> "$config_file"
}
config_list_foreach "$config" spki handle_resolver_spki
}
config_foreach handle_resolver resolver
}
start_service() {
local config_file_tmp
local manual
local log_level
local command_line_arguments
mkdir -p "$stubby_config_dir"
config_load "stubby"
config_get_bool manual "global" manual "0"
if [ "$manual" = "1" ]; then
cp "$stubby_manual_config" "$stubby_config"
else
config_file_tmp="$stubby_config.$$"
generate_config "$config_file_tmp"
mv "$config_file_tmp" "$stubby_config"
fi
config_get command_line_arguments "global" command_line_arguments ""
config_get log_level "global" log_level ""
if [ "$("$stubby_init" enabled; printf "%u" $?)" -eq 0 ]; then
if [ -n "$stubby_boot" ]; then
local trigger
trigger="$(uci_get stubby global trigger)"
if [ "$trigger" != "timed" ]; then
return 0
fi
fi
procd_open_instance "stubby"
procd_set_param command "$stubby" -C "$stubby_config"
if [ -n "$log_level" ]; then
procd_append_param command -v "$log_level"
fi
if [ -n "$command_line_arguments" ]; then
procd_append_param command "$command_line_arguments"
fi
procd_set_param respawn
procd_set_param file "$stubby_config"
procd_set_param stdout 1
procd_set_param stderr 1
procd_set_param pidfile "$stubby_pid_file"
procd_set_param user stubby
procd_close_instance
fi
}
service_triggers()
{
local trigger
local delay
trigger="$(uci_get stubby global trigger)"
delay="$(uci_get stubby global triggerdelay "2")"
if [ "$trigger" != "none" ] && [ "$trigger" != "timed" ]; then
PROCD_RELOAD_DELAY=$((${delay:-2} * 1000))
procd_add_interface_trigger "interface.*.up" "$trigger" "$stubby_init" start
fi
procd_add_reload_trigger "stubby"
}