1#@!#!123s

: / proc / self / root / opt / psa / admin / sbin / modules / ssh-terminal /
Filename : installer
back
#!/bin/bash -e
### Copyright 1999-2024. WebPros International GmbH. All rights reserved.

cd "`dirname "$0"`"

sshd_systemd_name()
{
	if [ "`plesk sbin osdetect --pkg`" = "deb" ]; then
		echo "ssh"
	else
		echo "sshd"
	fi
}

systemd_unit_dir()
{
	if [ "`plesk sbin osdetect --pkg`" = "deb" ]; then
		echo "/lib/systemd/system"
	else
		echo "/usr/lib/systemd/system"
	fi
}

get_arch_for_systemd()
{
	local arch="`plesk sbin osdetect --arch`"
	case "$arch" in
		aarch64) echo "arm64" ;;
		x86_64) echo "x86-64" ;;
		*) echo "$arch" ;;
	esac
}

user_name="plesk-ssh-terminal"
group_name="$user_name"
home="/usr/local/psa/var/modules/ssh-terminal"
service_name="plesk-ssh-terminal"
unit_template="/usr/local/psa/admin/plib/modules/ssh-terminal/resources/config/plesk-ssh-terminal.service"
unit_file="`systemd_unit_dir`/$service_name.service"
unit_drop_in="/etc/systemd/system/$service_name.service.d/options.conf"
sshd_name="`sshd_systemd_name`"

case "$1" in
	--create-user)
		if ! id "$user_name" >/dev/null 2>&1; then
			echo "Adding user and group $user_name"
			useradd --system --user-group --shell /usr/sbin/nologin --home "$home" \
				--comment "Plesk SSH Terminal" \
				"$user_name"
			# SSH tries to create .ssh on client side and emits warning if unable, avoid this
			install -d -m 0700 -o "$user_name" -g "$group_name" "$home/.ssh"
		fi

		if ! id -nG "sw-cp-server" | grep -q "$group_name"; then
			gpasswd -a "sw-cp-server" "$group_name"
			plesk sbin pleskrc sw-cp-server reload
		fi

		if ! id -nG "psaadm" | grep -q "$group_name"; then
			gpasswd -a "psaadm" "$group_name"
			plesk sbin pleskrc sw-engine reload
		fi
		;;

	--delete-user)
		if id -nG "psaadm" | grep -q "$group_name"; then
			gpasswd -d "psaadm" "$group_name"
			# Removal from UI is synchronous, so no reload here to avoid breaking the request
		fi

		if id -nG "sw-cp-server" | grep -q "$group_name"; then
			gpasswd -d "sw-cp-server" "$group_name"
			plesk sbin pleskrc sw-cp-server reload
		fi

		if id "$user_name" >/dev/null 2>&1; then
			echo "Removing user and group $user_name"
			userdel --force "$user_name"
			# Home directory contents will be removed by Plesk as part of extension uninstall
		fi
		;;
	
	--is-sshd-active)
		if systemctl is-active -q "$sshd_name.socket"; then
			true
		else
			plesk sbin pleskrc "$sshd_name" status
		fi
		;;

	--update-configuration)
		if systemctl is-active -q "$sshd_name.socket"; then
			SSHD_LISTENS_ON="$(systemctl show "$sshd_name.socket" -p Listen \
				| cut -d= -f2 | cut -d' ' -f1 | head -n1)"
		else
			SSHD_LISTENS_ON="$(lsof -nP -a -i TCP -s TCP:LISTEN \
				-p "`systemctl show "$sshd_name.service" -p MainPID | cut -d= -f2`" \
				| awk '(NR > 1) {print $9; exit}')"
		fi

		if [ -n "$SSHD_LISTENS_ON" ]; then
			echo "Configuring to connect to $SSHD_LISTENS_ON"
			mkdir -p "`dirname "$unit_drop_in"`"
			cat > "$unit_drop_in" <<-EOT
				# Created by $0 $*
				[Service]
				Environment="OPTIONS=--connect-to $SSHD_LISTENS_ON"
				EOT
			/bin/systemctl daemon-reload
		else
			echo "Skipping configuration update: cannot detect address:port sshd listens on"
		fi
		;;

	--remove-configuration)
		rm -f "$unit_drop_in" || :
		rmdir --ignore-fail-on-non-empty "`dirname "$unit_drop_in"`" || :
		;;
	
	--enable-service)
		ARCH="`get_arch_for_systemd`"
		SERVICE_ACTION="try-restart"
		[ -f "$unit_file" ] || SERVICE_ACTION="start"

		sed -e "s/@ARCH@/$ARCH/g" "$unit_template" | cmp -s "$unit_file" - || {
			sed -e "s/@ARCH@/$ARCH/g" "$unit_template" > "$unit_file"
			# This also implicitly does 'systemctl daemon-reload', required on unit update
			plesk sbin register_service --enable "$service_name"
		}

		plesk sbin pleskrc "$service_name" "$SERVICE_ACTION"
		;;
	
	--disable-service)
		plesk sbin pleskrc "$service_name" "stop" || :
		plesk sbin register_service --disable "$service_name" || :
		rm -f "$unit_file" || :
		;;

	-h|--help|*)
		cat <<-EOT
			Usage: `basename "$0"` [OPTIONS]

			Options:
			  --create-user             Create the user and group for SSH terminal
			  --delete-user             Delete the user and group for SSH terminal
			  --update-configuration    Update daemon configuration according to current
			                            system settings, including address:port of
			                            sshd daemon to connect to
			  --remove-configuration    Remove daemon configuration
			  --enable-service          Install, enable, and start the daemon unit
			  --disable-service         Stop, disable, and remove the daemon unit
			  --is-sshd-active          Check if SSH daemon is ready to accept connections
			  -h, --help                Show this help
			EOT
		exit 1
		;;
esac