#!/bin/sh
#
# update-files
# John Simpson <jms1@jms1.net> 2006-02-15
#
# reads incoming data and saves it to one of a set of known filenames
# then runs additional commands based on which file was received
#
# 2007-01-26 jms1 - adding auth.cdb to the mix
#
# 2008-04-16 jms1 - changing license from "GPLv2 only" to "GPL v2 or v3".
#   no code changes.
#
###############################################################################
#
# Copyright (C) 2006,2007,2008 John Simpson.
#
# 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 2 or version 3 of the
# license, at your option.
#
# 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.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
###############################################################################

PATH="/usr/bin:/bin:/usr/local/bin"

# if variable not set, $file will contain an empty string
file=${SSH_ORIGINAL_COMMAND:-}

# these files are all handled by:
# - writing to a temp file
# - chmod to make world readable
# - rename to the real name

if [	   "$file" = "validrcptto.cdb"		\
	-o "$file" = "rcpthosts"		\
	-o "$file" = "morercpthosts.cdb"	\
	-o "$file" = "auth.cdb"			\
	-o "$file" = "smtproutes" ]
then
	logger -t update-files "$TCPREMOTEIP updating $file"

	echo Saving incoming data to $file.new
	cat > $file.new

	echo Setting permissions
	chmod 644 $file.new

	echo Renaming $file.new to $file
	mv $file.new $file

	exit 0
fi

# unknown command - either it's a bug or a security violation
# either way, it needs to be logged

logger -t update-files "$TCPREMOTEIP sent invalid command '$file'"
echo Invalid command, this incident has been reported
exit 1