https-dns-proxy: new init script and config files

Signed-off-by: Stan Grishin <stangri@melmac.net>

net/https-dns-proxy/Makefile

@@ -2,7 +2,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=https_dns_proxy
 PKG_VERSION:=2018-04-23
-PKG_RELEASE=1
+PKG_RELEASE=3
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_MIRROR_HASH:=24b7e4238c37e646f33eee3a374f6b7beb5c167b9c5008cc13b51e5f1f3a44ea

net/https-dns-proxy/files/https_dns_proxy.config

@@ -1,8 +1,19 @@
 config https_dns_proxy
 	option listen_addr '127.0.0.1'
 	option listen_port '5053'
+	option bootstrap_dns '8.8.8.8,8.8.4.4'
+	option url_prefix 'https://dns.google.com/resolve?'
+	option user 'nobody'
+	option group 'nogroup'
+	option subnet_addr ''
+	option proxy_server ''
+
+config https_dns_proxy
+	option listen_addr '127.0.0.1'
+	option listen_port '5054'
+	option bootstrap_dns '1.1.1.1,1.0.0.1'
+	option url_prefix 'https://cloudflare-dns.com/dns-query?ct=application/dns-json&'
 	option user 'nobody'
 	option group 'nogroup'
 	option subnet_addr ''
 	option proxy_server ''
-	option url_prefix 'https://dns.google.com/resolve?'

net/https-dns-proxy/files/https_dns_proxy.init

@@ -1,39 +1,37 @@
 #!/bin/sh /etc/rc.common
 
 START=80
-
 USE_PROCD=1
-PROG=/usr/sbin/https_dns_proxy
-
-start_instance() {
-	local cfg="$1"
-	local listen_addr listen_port user group
 
-	config_get listen_addr "$cfg" listen_addr
-	config_get listen_port "$cfg" listen_port
-	config_get user "$cfg" user
-	config_get group "$cfg" group
-	config_get subnet_addr "$cfg" subnet_addr
-	config_get proxy_server "$cfg" proxy_server
-	config_get url_prefix "$cfg" url_prefix
+PROG=/usr/sbin/https_dns_proxy
 
-	if [ -n "$subnet_addr" ]; then
-		subnet_param="-e $subnet_addr"
-	fi
+xappend() { param="$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"
+}
 
-	if [ -n "$proxy_server" ]; then
-		proxy_param="-t $proxy_server"
-	fi
+start_instance() {
+	local cfg="$1" param
 
-	if [ -z "$url_prefix" ]; then
-		url_prefix="https://dns.google.com/resolve?"
-	fi
+	append_parm "$cfg" 'listen_addr' '-a' '127.0.0.1'
+	append_parm "$cfg" 'listen_port' '-p' '5053'
+	append_parm "$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
-	procd_set_param command ${PROG} \
-		-a "$listen_addr" -p "$listen_port" \
-		-u "$user" -g "$group" $subnet_param $proxy_param \
-		-r "$url_prefix"
+	procd_set_param command ${PROG} ${param}
 	procd_set_param respawn
 	procd_close_instance
 }