ttyd: update to 1.5.2 and add init script

Signed-off-by: Richard Yu <yurichard3839@gmail.com>

cherry picked from commit 9e325b47cb
Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>

utils/ttyd/files/ttyd.config

@@ -0,0 +1,5 @@
+
+config ttyd
+	option interface '@lan'
+	option command '/usr/libexec/login.sh'
+

utils/ttyd/files/ttyd.init

@@ -0,0 +1,98 @@
+#!/bin/sh /etc/rc.common
+
+START=99
+STOP=50
+USE_PROCD=1
+
+NAME=ttyd
+PROG=/usr/bin/$NAME
+
+validate_section_ttyd()
+{
+	uci_load_validate ttyd ttyd "$1" "$2" \
+		'enable:bool:1' \
+		'port:port' \
+		'interface:string' \
+		'credential:string' \
+		'uid:uinteger' \
+		'gid:uinteger' \
+		'signal:uinteger' \
+		'url_arg:bool' \
+		'readonly:bool' \
+		'client_option:list(string)' \
+		'terminal_type:string' \
+		'check_origin:bool' \
+		'max_clients:uinteger' \
+		'once:bool' \
+		'index:string' \
+		'ipv6:bool' \
+		'ssl:bool' \
+		'ssl_cert:file' \
+		'ssl_key:file' \
+		'ssl_ca:file' \
+		'debug:uinteger' \
+		'command:string'
+}
+
+ttyd_instance()
+{
+	[ "$2" = 0 ] || {
+		echo "validation failed"
+		return 1
+	}
+
+	[ "$enable" = 0 ] && return 1
+	[ -z "$command" ] && return 1
+
+	[ "${interface::1}" = @ ] && {
+		interface=$(
+			. /lib/functions/network.sh
+			network_get_device device "${interface:1}"
+			echo -n "$device"
+		)
+	}
+
+	[ "$url_arg" = 0 ] && url_arg=""
+	[ "$readonly" = 0 ] && readonly=""
+	[ "$check_origin" = 0 ] && check_origin=""
+	[ "$once" = 0 ] && once=""
+	[ "$ipv6" = 0 ] && ipv6=""
+	[ "$ssl" = 0 ] && ssl=""
+
+	procd_open_instance
+	procd_set_param command "$PROG" \
+		${port:+-p $port} \
+		${interface:+-i $interface} \
+		${credential:+-c $credential} \
+		${uid:+-u $uid} \
+		${gid:+-g $gid} \
+		${signal:+-s $signal} \
+		${url_arg:+-a} \
+		${readonly:+-R} \
+		${terminal_type:+-T $terminal_type} \
+		${check_origin:+-O} \
+		${max_clients:+-m $max_clients} \
+		${once:+-o} \
+		${index:+-I $index} \
+		${ipv6:+-6} \
+		${ssl:+-S} \
+		${ssl_cert:+-C $ssl_cert} \
+		${ssl_key:+-K $ssl_key} \
+		${ssl_ca:+-A $ssl_ca} \
+		${debug:+-d}
+	config_list_foreach "$1" client_option "procd_append_param command -t"
+	procd_append_param command $command
+	procd_set_param stdout 1
+	procd_set_param stderr 1
+	procd_close_instance
+}
+
+start_service() {
+	config_load "$NAME"
+	config_foreach validate_section_ttyd ttyd ttyd_instance
+}
+
+shutdown() {
+	# close all open connections
+	killall "$NAME"
+}