aria2: Add files in order to use LuCI

* Add config file.
* Add init.d file.

Signed-off-by: Hsing-Wang Liao <kuoruan@gmail.com>

net/aria2/Makefile

@@ -67,6 +67,12 @@ CONFIGURE_ARGS += \
 define Package/aria2/install
 	$(INSTALL_DIR) $(1)/usr/bin
 	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/bin/aria2c $(1)/usr/bin
+
+	$(INSTALL_DIR) $(1)/etc/init.d
+	$(INSTALL_BIN) ./files/aria2.init $(1)/etc/init.d/aria2
+
+	$(INSTALL_DIR) $(1)/etc/config
+	$(INSTALL_CONF) ./files/aria2.conf $(1)/etc/config/aria2
 endef
 
 $(eval $(call BuildPackage,aria2))

net/aria2/files/aria2.conf

@@ -0,0 +1,10 @@
+
+config aria2 'main'
+	option enabled '0'
+	option file_allocation 'none'
+	option bt_enable_lpd 'true'
+	option enable_dht 'true'
+	option follow_torrent 'true'
+	option user 'root'
+	option dir '/mnt/sda1'
+	option save_session_interval '30'

net/aria2/files/aria2.init

@@ -0,0 +1,78 @@
+#!/bin/sh /etc/rc.common
+# Copyright (C) 2014-2016 nanpuyue <nanpuyue@gmail.com>
+
+START=99
+SERVICE_WRITE_PID=1
+SERVICE_DAEMONIZE=1
+
+
+append_params() {
+	local p; local v; local s="$1"; shift
+	for p in $*; do
+		config_get v "$s" "$p"
+		[ -n "$v" ] && (
+			p=$(echo "$p" | sed -e 's|_|-|g');
+			echo "$p=$v" >> $config_file
+			)
+	done
+}
+
+section_enabled() {
+	local result
+	config_get_bool result "$1" 'enabled' 0
+	[ $result -eq 1 ]
+}
+
+option_disabled() {
+	local result
+	config_get_bool result "$1" "$2" 1
+	[ $result -eq 0 ]
+}
+
+start_instance() {
+	local s="$1"
+	local user
+
+	section_enabled "$s" || return 1
+
+	config_get config_dir "$s" 'config_dir' '/var/etc/aria2'
+	config_get user "$s" 'user'
+
+	config_file="$config_dir/aria2.conf"
+	session_file="$config_dir/aria2.session"
+	dht_file="$config_dir/dht.dat"
+	[ -d "$config_dir" ] || {
+		mkdir -m 0755 -p "$config_dir"
+		touch "$config_file"
+		[ -z "$user" ] || chown -R $user $config_dir
+	}
+	touch "$session_file"
+
+	echo -e "enable-rpc=true\nrpc-allow-origin-all=true\nrpc-listen-all=true\nquiet=true" > $config_file
+	echo -e "continue=true\ninput-file=$session_file\nsave-session=$session_file" >> $config_file
+	option_disabled "$s" 'enable_dht' || echo "dht-file-path=$dht_file" >> $config_file
+
+	append_params "$s" \
+		file_allocation bt_enable_lpd enable_dht rpc_user rpc_passwd rpc_listen_port dir bt_tracker disk_cache \
+		max_overall_download_limit max_overall_upload_limit max_download_limit max_upload_limit max_concurrent_downloads \
+		max_connection_per_server min_split_size split save_session_interval follow_torrent listen_port bt_max_peers \
+		peer_id_prefix user_agent rpc_secret
+	
+	config_list_foreach "$s" extra_settings append_extrasettings
+	
+	SERVICE_UID="$user" \
+	service_start /usr/bin/aria2c --conf-path="$config_file"
+}
+
+append_extrasettings() {
+	echo "$1" >> $config_file
+}
+
+start() {
+	config_load 'aria2'
+	config_foreach start_instance 'aria2'
+}
+
+stop() {
+	service_stop /usr/bin/aria2c
+}