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#!/bin/bash
# Author: An-Cheng Huang <ancheng@vyatta.com>
# Date: 2007
# Description: command wrapper
# **** License ****
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# 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.
#
# This code was originally developed by Vyatta, Inc.
# Portions created by Vyatta are Copyright (C) 2006, 2007, 2008 Vyatta, Inc.
# All Rights Reserved.
# **** End License ****
if grep -q union=aufs /proc/cmdline || grep -q aufs /proc/filesystems ; then
export UNIONFS=aufs
else
export UNIONFS=unionfs
fi
# permissions
## note: this script should be running as the vyattacfg group, e.g., with "sg".
## otherwise there may be permission problems with the files created.
UMASK_SAVE=`umask`
umask 0002
export VYATTA_EDIT_LEVEL=/;
export VYATTA_TEMPLATE_LEVEL=/;
export VYATTA_ACTIVE_CONFIGURATION_DIR=/opt/vyatta/config/active;
# allow env variable to override default session id (ppid). this enables
# the script to handle cases where the invocations can come from
# different parents.
SID=$PPID
if [ -n "$CMD_WRAPPER_SESSION_ID" ]; then
SID=$CMD_WRAPPER_SESSION_ID
fi
export VYATTA_CHANGES_ONLY_DIR=/tmp/changes_only_$SID;
export VYATTA_TEMP_CONFIG_DIR=/opt/vyatta/config/tmp/new_config_$SID;
export VYATTA_CONFIG_TMP=/opt/vyatta/config/tmp/tmp_$SID;
vyatta_escape ()
{
# copied over from /etc/bash_completion.d/20vyatta-cfg
# $1: \$original
# $2: \$escaped
eval "$2=\${$1//\%/%25}"
eval "$2=\${$2//\*/%2A}"
eval "$2=\${$2//\//%2F}"
}
mvcp ()
{
# copied over from /etc/bash_completion.d/20vyatta-cfg
local str=$1
shift
local Str=$1
shift
local cmd=$1
shift
local _otag=$1
local _ovalu=$2
local _to=$3
local _ntag=$4
local _nvalu=$5
local _oval=''
local _nval=''
local _mpath=${VYATTA_TEMP_CONFIG_DIR}/${VYATTA_EDIT_LEVEL}
local _tpath=${VYATTA_CONFIG_TEMPLATE}/${VYATTA_TEMPLATE_LEVEL}
vyatta_escape _ovalu _oval
vyatta_escape _nvalu _nval
if [ "$_to" != 'to' ] || [ -z "$_ntag" ] || [ -z "$_nval" ]; then
echo "Invalid $str command"
return 1
fi
if [ "$_otag" != "$_ntag" ]; then
echo "Cannot $str from \"$_otag\" to \"$_ntag\""
return 1
fi
if [ ! -d "$_tpath/$_otag/$VYATTA_TAG_NAME" ]; then
echo "Cannot $str under \"$_otag\""
return 1
fi
if [ ! -d "$_mpath/$_otag/$_oval" ]; then
echo "Configuration \"$_otag $_ovalu\" does not exist"
return 1
fi
if [ -d "$_mpath/$_ntag/$_nval" ]; then
echo "Configuration \"$_ntag $_nvalu\" already exists"
return 1
fi
if ! /opt/vyatta/sbin/my_set $_ntag "$_nvalu"; then
echo "$Str failed"
return 1
fi
/opt/vyatta/sbin/my_delete $_ntag "$_nvalu" >&/dev/null 3>&1
$cmd "$_mpath/$_otag/$_oval" "$_mpath/$_ntag/$_nval"
return 0
}
RET_STATUS=0
case "$1" in
begin)
# set up the environment/directories
mkdir -p $VYATTA_ACTIVE_CONFIGURATION_DIR
mkdir -p $VYATTA_CHANGES_ONLY_DIR
if [ ! -d $VYATTA_TEMP_CONFIG_DIR ]; then
mkdir -p $VYATTA_TEMP_CONFIG_DIR
sudo mount -t $UNIONFS -o dirs=${VYATTA_CHANGES_ONLY_DIR}=rw:${VYATTA_ACTIVE_CONFIGURATION_DIR}=ro $UNIONFS ${VYATTA_TEMP_CONFIG_DIR}
fi
mkdir -p $VYATTA_CONFIG_TMP
;;
end)
# tear down the environment/directories
sudo umount ${VYATTA_TEMP_CONFIG_DIR}
rm -rf ${VYATTA_CHANGES_ONLY_DIR}
rm -rf ${VYATTA_CONFIG_TMP}
rm -rf ${VYATTA_TEMP_CONFIG_DIR}
;;
cleanup|discard)
sudo umount ${VYATTA_TEMP_CONFIG_DIR}
rm -rf $VYATTA_CHANGES_ONLY_DIR/* $VYATTA_CHANGES_ONLY_DIR/.modified
sudo mount -t $UNIONFS -o dirs=${VYATTA_CHANGES_ONLY_DIR}=rw:${VYATTA_ACTIVE_CONFIGURATION_DIR}=ro $UNIONFS ${VYATTA_TEMP_CONFIG_DIR}
;;
set)
/opt/vyatta/sbin/my_set "${@:2}"
RET_STATUS=$?
;;
delete)
/opt/vyatta/sbin/my_delete "${@:2}"
RET_STATUS=$?
;;
commit)
# debug file /tmp/bar should be deleted before release
/opt/vyatta/sbin/my_commit -a >> /tmp/bar
/opt/vyatta/sbin/my_commit -s >> /tmp/bar
/opt/vyatta/sbin/my_commit -e -d >> /tmp/bar
RET_STATUS=$?
;;
save)
/opt/vyatta/sbin/vyatta-save-config.pl "${@:2}"
RET_STATUS=$?
;;
load)
export vyatta_sysconfdir=/opt/vyatta/etc
export vyatta_sbindir=/opt/vyatta/sbin
/opt/vyatta/sbin/vyatta-load-config.pl "${@:2}"
RET_STATUS=$?
;;
rule-rename)
# this option is to be used for renaming firewall and nat rules only
# usage for this option specified on the next two lines -
# rule-rename firewall $firewall_ruleset rule $rule_num to rule $rename_rulenum
# rule-rename nat rule $rule_num to rule $rename_rulenum
if [ "$2" == "firewall" ]; then
VYATTA_TEMPLATE_LEVEL=/firewall/name/node.tag;
VYATTA_EDIT_LEVEL="/firewall/name/$3";
elif [ "$2" == "nat" ]; then
VYATTA_TEMPLATE_LEVEL=/service/nat;
VYATTA_EDIT_LEVEL=/service/nat;
fi
_mpath=${VYATTA_TEMP_CONFIG_DIR}/${VYATTA_EDIT_LEVEL}
_tpath=${VYATTA_CONFIG_TEMPLATE}/${VYATTA_TEMPLATE_LEVEL}
VYATTA_EDIT_LEVEL="${_mpath#$VYATTA_TEMP_CONFIG_DIR}/"
VYATTA_TEMPLATE_LEVEL="${_tpath#$VYATTA_CONFIG_TEMPLATE}/"
if [ $2 == "firewall" ]; then
mvcp rename Rename mv "${@:4}"
elif [ $2 == "nat" ]; then
mvcp rename Rename mv "${@:3}"
fi
RET_STATUS=$?
;;
*)
echo "Invalid command \"$1\" for vyatta-cfg-cmd-wrapper"
RET_STATUS=1
;;
esac
umask ${UMASK_SAVE}
exit $RET_STATUS
|
