- #!/bin/sh /etc/rc.common
- # Copyright 2019 Stan Grishin (stangri@melmac.net)
- # shellcheck disable=SC2039
-
- export START=80
- export USE_PROCD=1
-
- PROG=/usr/sbin/https_dns_proxy
-
- xappend() { param="$param $1"; }
-
- append_parm() {
- local section="$1"
- local option="$2"
- local switch="$3"
- local default="$4"
- local _loctmp
- config_get _loctmp "$section" "$option" "$default"
- [ -z "$_loctmp" ] && return 0
- xappend "$switch $_loctmp"
- }
-
- start_instance() {
- local cfg="$1" param listen_addr listen_port
-
- append_parm "$cfg" 'listen_addr' '-a' '127.0.0.1'
- append_parm "$cfg" 'listen_port' '-p' "$p"
- append_parm "$cfg" 'bootstrap_dns' '-b'
- append_parm "$cfg" 'url_prefix' '-r'
- append_parm "$cfg" 'user' '-u' 'nobody'
- append_parm "$cfg" 'group' '-g' 'nogroup'
- append_parm "$cfg" 'subnet_addr' '-e'
- append_parm "$cfg" 'proxy_server' '-t'
-
- procd_open_instance
- # shellcheck disable=SC2086
- procd_set_param command ${PROG} ${param}
- procd_set_param respawn
- procd_close_instance
-
- config_get listen_addr "$cfg" 'listen_addr' '127.0.0.1'
- config_get listen_port "$cfg" 'listen_port' "$p"
- config_load 'dhcp'
- # shellcheck disable=SC2154
- config_foreach dnsmasq_add_doh_server 'dnsmasq' "${listen_addr}#${listen_port}"
- p="$((p+1))"
- }
-
- service_triggers() {
- procd_add_reload_trigger 'https_dns_proxy'
- }
-
- start_service() {
- local p=5053
- dhcp_backup 'create'
- config_load 'https_dns_proxy'
- config_foreach start_instance 'https_dns_proxy'
- if [ -z "$(uci -q get dhcp.@dnsmasq[0].server)" ]; then
- dhcp_backup 'restore'
- fi
- if [ -n "$(uci -q changes dhcp)" ]; then
- uci -q commit dhcp
- [ -x /etc/init.d/dnsmasq ] && /etc/init.d/dnsmasq restart >/dev/null 2>&1
- fi
- }
-
- stop_service() {
- dhcp_backup 'restore'
- if [ -n "$(uci -q changes dhcp)" ]; then
- uci -q commit dhcp
- [ -x /etc/init.d/dnsmasq ] && /etc/init.d/dnsmasq restart >/dev/null 2>&1
- fi
- }
-
- dnsmasq_add_doh_server() {
- local cfg="$1" value="$2"
- uci -q add_list dhcp."$cfg".server="$value"
- }
-
- dnsmasq_create_server_backup() {
- local cfg="$1" i
- if ! uci -q get "dhcp.$cfg.doh_backup_server" >/dev/null; then
- for i in $(uci -q get "dhcp.$cfg.server"); do
- uci -q add_list dhcp."$cfg".doh_backup_server="$i"
- done
- fi
- uci -q del "dhcp.$cfg.server"
- }
-
- dnsmasq_restore_server_backup() {
- local cfg="$1" i
- if uci -q get "dhcp.$cfg.doh_backup_server" >/dev/null; then
- uci -q del "dhcp.$cfg.server"
- for i in $(uci -q get "dhcp.$cfg.doh_backup_server"); do
- uci -q add_list dhcp."$cfg".server="$i"
- done
- fi
- }
-
- dhcp_backup() {
- config_load 'dhcp'
- case "$1" in
- create)
- config_foreach dnsmasq_create_server_backup 'dnsmasq';;
- restore)
- config_foreach dnsmasq_restore_server_backup 'dnsmasq';;
- esac
- }
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