[PATCH v3 1/3] fff-gateway: add package
Fabian Bläse
fabian at blaese.de
Di Apr 23 18:09:06 CEST 2019
This introduces a new script for simple gateway configuration.
The main configuregateway script is able to execute functions
for various steps like 'configure' or 'apply' from scripts in /etc/gateway.d.
This makes it easy to distribute configuration to the appropriate packages.
Signed-off-by: Fabian Bläse <fabian at blaese.de>
Reviewed-by: Robert Langhammer <rlanghammer at web.de>
---
Changes in v2:
- Remove unnecessary package dependency
- Remove unnecessary shell sources
- Remove wrong sanity check left over from refactoring
Changes in v3:
- rename service reload function
- use grep -q instead of redirection to /dev/null
- use tabs for Makefile indentation
---
src/packages/fff/fff-gateway/Makefile | 38 +++++++
.../files/usr/sbin/configuregateway | 102 ++++++++++++++++++
2 files changed, 140 insertions(+)
create mode 100644 src/packages/fff/fff-gateway/Makefile
create mode 100755 src/packages/fff/fff-gateway/files/usr/sbin/configuregateway
diff --git a/src/packages/fff/fff-gateway/Makefile b/src/packages/fff/fff-gateway/Makefile
new file mode 100644
index 0000000..7c1dd55
--- /dev/null
+++ b/src/packages/fff/fff-gateway/Makefile
@@ -0,0 +1,38 @@
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=fff-gateway
+PKG_VERSION:=1
+PKG_RELEASE:=1
+
+PKG_BUILD_DIR:=$(BUILD_DIR)/fff-gateway
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/fff-gateway
+ SECTION:=base
+ CATEGORY:=Freifunk
+ TITLE:= Freifunk-Franken gateway configuration
+ URL:=https://www.freifunk-franken.de
+endef
+
+define Package/fff-gateway/description
+ This package configures the gateway
+endef
+
+define Build/Prepare
+ echo "all: " > $(PKG_BUILD_DIR)/Makefile
+endef
+
+define Build/Configure
+ # nothing
+endef
+
+define Build/Compile
+ # nothing
+endef
+
+define Package/fff-gateway/install
+ $(CP) ./files/* $(1)/
+endef
+
+$(eval $(call BuildPackage,fff-gateway))
diff --git a/src/packages/fff/fff-gateway/files/usr/sbin/configuregateway b/src/packages/fff/fff-gateway/files/usr/sbin/configuregateway
new file mode 100755
index 0000000..42be02f
--- /dev/null
+++ b/src/packages/fff/fff-gateway/files/usr/sbin/configuregateway
@@ -0,0 +1,102 @@
+#!/bin/sh
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+
+# IMPORTANT!!
+# DO NOT RUN THIS IN CRONJOB!
+
+execute_subshell() {
+ if [ $# -ne 1 ]; then
+ echo "Usage:" "$0" "<function>"
+ fi
+
+ for script in /etc/gateway.d/*; do
+ (
+ # unset function to prevent executing parents shell function
+ unset -f "$1"
+ . "$script"
+
+ if type "$1" | grep -q "shell function"; then
+ "$1"
+ fi
+ )
+
+ if [ $? -ne 0 ]; then
+ echo "Error when executing" "$1" "from" "$(basename "$script")"
+ exit 1
+ fi
+ done
+}
+
+configure() {
+ echo "This script might remove existing vlans, interfaces, addresses, etc."
+ read -r -p "Do you really want to continue? (y/n) " response
+ if ! [ "$response" == "y" ] || [ "$response" == "Y" ]; then
+ exit 1
+ fi
+
+ execute_subshell configure
+
+ exit 0
+}
+
+reload_services() {
+ execute_subshell reload
+ reload_config
+}
+
+apply_changes() {
+ execute_subshell apply
+ reload_services
+ exit 0
+}
+
+revert_changes() {
+ execute_subshell revert
+ exit 0
+}
+
+test_changes() {
+ reload_services
+
+ sleep 5
+ echo "Configuration reloaded. Changes will be reverted in 200s."
+ echo "Kill this script to keep changes."
+ sleep 200
+ echo "Reverting changes.."
+
+ revert_changes
+ restart_services
+}
+
+
+usage() {
+ echo Usage: $0 [OPTION];
+ echo;
+ echo "Options:"
+ echo " -c: configure. No commit, no restart!"
+ echo " -t: test changes. Restarts services, waits up to 200s for SIGINT"
+ echo " -a: apply changes"
+ echo " -r: revert changes"
+}
+
+
+if [ $# != 1 ]; then
+ usage; exit 1
+fi
+
+case "$1" in
+ -c) configure ;;
+ -t) test_changes ;;
+ -a) apply_changes ;;
+ -r) revert_changes ;;
+ *) usage; exit 1 ;;
+esac
--
2.21.0
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