From b058f9f128d081c8d96345238a5075846f30e108 Mon Sep 17 00:00:00 2001
From: bol-van <none@none.none>
Date: Mon, 21 Oct 2024 17:43:29 +0300
Subject: [PATCH] init.d: openwrt min disk space startup

---
 docs/readme.txt                               | 23 +++++++++++++
 init.d/openwrt-minimal/readme.txt             | 20 +++++++++++
 init.d/openwrt-minimal/tpws/etc/init.d/tpws   | 34 +++++++++++++++++++
 .../tpws/etc/nftables.d/90-tpws.nft           |  8 +++++
 install_easy.sh                               |  1 +
 5 files changed, 86 insertions(+)
 create mode 100644 init.d/openwrt-minimal/readme.txt
 create mode 100755 init.d/openwrt-minimal/tpws/etc/init.d/tpws
 create mode 100644 init.d/openwrt-minimal/tpws/etc/nftables.d/90-tpws.nft

diff --git a/docs/readme.txt b/docs/readme.txt
index a773bf8..4f52a30 100644
--- a/docs/readme.txt
+++ b/docs/readme.txt
@@ -1716,6 +1716,29 @@ install_easy.sh автоматизирует ручные варианты пр
 Система простой инсталяции заточена на любое умышленное или неумышленное изменение прав доступа на файлы.
 Устойчива к репаку под windows. После копирования в /opt права будут принудительно восстановлены.
 
+
+Установка на openwrt в режиме острой нехватки места на диске
+------------------------------------------------------------
+
+Инструкция только для openwrt 22 и выше с nftables. Требуется около 120 кб на диске.
+Придется отказаться от всего, кроме tpws.
+Никаких зависимостей устанавливать не нужно.
+
+Скопируйте все из init.d/openwrt-minimal/tpws/* в корень openwrt.
+Установите права на файлы : chmod 755 /etc/init.d/tpws /usr/bin/tpws
+Отредактируйте /etc/config/tpws
+/etc/init.d/tpws enable
+/etc/init.d/tpws start
+fw4 reload
+
+Полное удаление :
+
+/etc/init.d/tpws disable
+/etc/init.d/tpws stop
+rm -f /etc/nftables.d/90-tpws.nft /etc/init.d/tpws
+fw4 restart
+
+
 Android
 -------
 
diff --git a/init.d/openwrt-minimal/readme.txt b/init.d/openwrt-minimal/readme.txt
new file mode 100644
index 0000000..f2f7d02
--- /dev/null
+++ b/init.d/openwrt-minimal/readme.txt
@@ -0,0 +1,20 @@
+Minimal tpws startup script for low storage openwrt with nftables.
+No opkg dependencies required !
+
+* install :
+
+Make sure you are running openwrt with nftables, not iptables.
+Copy everything from tpws directory to the root of the router.
+Copy tpws binary for your architecture to /usr/bin/tpws
+Set proper access rights : chmod 755 /etc/init.d/tpws /usr/bin/tpws
+EDIT /etc/config/tpws
+/etc/init.d/tpws enable
+/etc/init.d/tpws start
+fw4 reload
+
+* full uninstall :
+
+/etc/init.d/tpws disable
+/etc/init.d/tpws stop
+rm -f /etc/nftables.d/90-tpws.nft /etc/init.d/tpws
+fw4 restart
diff --git a/init.d/openwrt-minimal/tpws/etc/init.d/tpws b/init.d/openwrt-minimal/tpws/etc/init.d/tpws
new file mode 100755
index 0000000..65d3f1d
--- /dev/null
+++ b/init.d/openwrt-minimal/tpws/etc/init.d/tpws
@@ -0,0 +1,34 @@
+#!/bin/sh /etc/rc.common
+
+TPWS_DEFAULT=/usr/bin/tpws
+TPWS_USER_DEFAULT=daemon
+
+START=99
+STOP=01
+USE_PROCD=1
+
+tpws_instance()
+{
+	config_get "$@"
+
+	local enabled port opt
+
+	config_get_bool enabled "$1" enabled 0
+	[ "$enabled" -eq 1 ] || return 1
+
+	config_get port "$1" port
+	config_get opt "$1" opt
+
+	local COMMAND="$TPWS --user=$TPWS_USER --port=$port $opt"
+	procd_open_instance
+	procd_set_param command $COMMAND
+	procd_close_instance
+}
+
+start_service()
+{
+	config_load tpws
+	config_get TPWS_USER defaults user $TPWS_USER_DEFAULT
+	config_get TPWS defaults tpws $TPWS_DEFAULT
+	config_foreach tpws_instance tpws
+}
diff --git a/init.d/openwrt-minimal/tpws/etc/nftables.d/90-tpws.nft b/init.d/openwrt-minimal/tpws/etc/nftables.d/90-tpws.nft
new file mode 100644
index 0000000..7ec3b82
--- /dev/null
+++ b/init.d/openwrt-minimal/tpws/etc/nftables.d/90-tpws.nft
@@ -0,0 +1,8 @@
+chain tpws_re {
+	type nat hook prerouting priority dstnat; policy accept;
+	tcp dport {80,443} redirect to :900
+}
+chain tpws_out {
+	type nat hook output priority -100; policy accept;
+	tcp dport {80,443} skuid != daemon redirect to :900
+}
diff --git a/install_easy.sh b/install_easy.sh
index c95ed61..5e1085f 100755
--- a/install_easy.sh
+++ b/install_easy.sh
@@ -486,6 +486,7 @@ init.d/runit/zapret/finish \
 init.d/openrc/zapret \
 init.d/sysv/zapret \
 init.d/openwrt/zapret \
+init.d/openwrt-minimal/tpws/etc/init.d/tpws \
 uninstall_easy.sh \
 	; do chmod 755 "$1/$f" 2>/dev/null ; done
 }