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161 lines
4.0 KiB
161 lines
4.0 KiB
#!/bin/sh /etc/rc.common
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# Copyright 2019 Stan Grishin (stangri@melmac.net)
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# shellcheck disable=SC2039
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export START=80
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export USE_PROCD=1
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dnsmasqConfig=''
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PROG=/usr/sbin/https-dns-proxy
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xappend() { param="$param $1"; }
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append_bool() {
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local section="$1"
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local option="$2"
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local value="$3"
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local default="$4"
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local _loctmp
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[ -z "$default" ] && default="0"
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config_get_bool _loctmp "$section" "$option" "$default"
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[ "$_loctmp" != "0" ] && xappend "$value"
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}
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append_parm() {
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local section="$1"
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local option="$2"
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local switch="$3"
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local default="$4"
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local _loctmp
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config_get _loctmp "$section" "$option" "$default"
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[ -z "$_loctmp" ] && return 0
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xappend "$switch $_loctmp"
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}
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append_match() {
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local section="$1"
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local option="$2"
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local value="$3"
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local match="$4"
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local _loctmp
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config_get_bool _loctmp "$section" "$option"
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[ "$_loctmp" = "$match" ] && xappend "$value"
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}
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start_instance() {
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local cfg="$1" param listen_addr listen_port i
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append_parm "$cfg" 'listen_addr' '-a' '127.0.0.1'
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append_parm "$cfg" 'listen_port' '-p' "$p"
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append_parm "$cfg" 'bootstrap_dns' '-b'
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append_parm "$cfg" 'resolver_url' '-r'
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append_parm "$cfg" 'user' '-u' 'nobody'
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append_parm "$cfg" 'group' '-g' 'nogroup'
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append_parm "$cfg" 'edns_subnet' '-e'
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append_parm "$cfg" 'proxy_server' '-t'
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append_parm "$cfg" 'logfile' '-l'
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append_bool "$cfg" 'use_http1' '-x'
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append_match "$cfg" 'verbosity' '-v' '1'
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append_match "$cfg" 'verbosity' '-vv' '2'
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append_match "$cfg" 'verbosity' '-vvv' '3'
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append_match "$cfg" 'verbosity' '-vvvv' '4'
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procd_open_instance
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# shellcheck disable=SC2086
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procd_set_param command ${PROG} -4 ${param}
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procd_set_param respawn
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procd_close_instance
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config_get listen_addr "$cfg" 'listen_addr' '127.0.0.1'
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config_get listen_port "$cfg" 'listen_port' "$p"
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if [ "$dnsmasqConfig" = "*" ]; then
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config_load 'dhcp'
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config_foreach dnsmasq_add_doh_server 'dnsmasq' "${listen_addr}#${listen_port}"
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elif [ -n "$dnsmasqConfig" ]; then
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for i in $dnsmasqConfig; do
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dnsmasq_add_doh_server "@dnsmasq[${i}]" "${listen_addr}#${listen_port}"
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done
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fi
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p="$((p+1))"
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}
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service_triggers() {
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procd_add_reload_trigger 'https-dns-proxy'
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}
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start_service() {
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local p=5053
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config_load 'https-dns-proxy'
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config_get dnsmasqConfig 'config' 'update_dnsmasq_config' '*'
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dhcp_backup 'create'
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config_load 'https-dns-proxy'
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config_foreach start_instance 'https-dns-proxy'
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if [ -n "$(uci -q changes dhcp)" ]; then
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uci -q commit dhcp
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[ -x /etc/init.d/dnsmasq ] && /etc/init.d/dnsmasq restart >/dev/null 2>&1
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fi
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}
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stop_service() {
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config_load 'https-dns-proxy'
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config_get dnsmasqConfig 'config' 'update_dnsmasq_config' '*'
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dhcp_backup 'restore'
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if [ -n "$(uci -q changes dhcp)" ]; then
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uci -q commit dhcp
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[ -x /etc/init.d/dnsmasq ] && /etc/init.d/dnsmasq restart >/dev/null 2>&1
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fi
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}
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service_triggers() {
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procd_add_reload_trigger 'https-dns-proxy'
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}
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dnsmasq_add_doh_server() {
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local cfg="$1" value="$2"
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uci -q del_list dhcp."$cfg".server="$value"
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uci -q add_list dhcp."$cfg".server="$value"
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}
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dnsmasq_create_server_backup() {
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local cfg="$1"
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local i
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uci -q get "dhcp.$cfg.doh_backup_server" >/dev/null && return 0
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for i in $(uci -q get "dhcp.$cfg.server"); do
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uci -q add_list dhcp."$cfg".doh_backup_server="$i"
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if [ "$i" = "${i//127.0.0.1}" ] && [ "$i" = "$(echo "$i" | tr -d /)" ]; then
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uci -q del_list dhcp."$cfg".server="$i"
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fi
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done
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}
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dnsmasq_restore_server_backup() {
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local cfg="$1"
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local i
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if uci -q get "dhcp.$cfg.doh_backup_server" >/dev/null; then
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uci -q del "dhcp.$cfg.server"
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for i in $(uci -q get "dhcp.$cfg.doh_backup_server"); do
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uci -q add_list dhcp."$cfg".server="$i"
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done
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uci -q del "dhcp.$cfg.doh_backup_server"
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fi
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}
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dhcp_backup() {
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local i
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config_load 'dhcp'
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case "$1" in
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create)
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if [ "$dnsmasqConfig" = "*" ]; then
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config_foreach dnsmasq_create_server_backup 'dnsmasq'
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elif [ -n "$dnsmasqConfig" ]; then
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for i in $dnsmasqConfig; do
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dnsmasq_create_server_backup "@dnsmasq[${i}]"
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done
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fi
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;;
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restore)
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config_foreach dnsmasq_restore_server_backup 'dnsmasq'
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;;
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esac
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}
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