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|
#!/bin/sh
# $NetBSD: download-vulnerability-list.sh.in,v 1.1 2007/07/14 20:17:10 adrianp Exp $
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3. All advertising materials mentioning features or use of this software
# must display the following acknowledgement:
# This product includes software developed by Alistair Crooks
# for the NetBSD project.
# 4. The name of the author may not be used to endorse or promote
# products derived from this software without specific prior written
# permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
# GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
: ${PKGVULNDIR="@pkgdbdir@"}
: ${COMPRESS_TYPE="gzip"}
: ${FETCH_CMD=@ftp@}
: ${FETCH_ARGS=""}
: ${FETCH_PROTO=ftp}
AP=@prefix@/sbin/audit-packages
NEW_VUL_LIST=pkg-vulnerabilities.$$
EXIST_VUL_LIST=pkg-vulnerabilities
FETCH_PATH="ftp.NetBSD.org/pub/NetBSD/packages/vulns"
_CONF_FILE="@sysconfdir@/audit-packages.conf"
COMPRESS_TOOL=""
usage()
{
argv0="${1##*/}"
cat <<EOF
$2
Usage: $argv0 [-s] [-c config-file]
-s : Verify the signature on the downloaded file.
-c : Specify a custom configuration file to use.
EOF
exit 1
}
verify=no
custom_conf=no
conf_found=no
neednew=no
while [ $# -gt 0 ]; do
case "$1" in
-s)
verify=yes
;;
-c)
custom_conf=yes
local_conf="$2"
;;
*)
usage "$0" "Unknown option $1"
esac
shift
done
# generic conf file handler
if [ -r ${_CONF_FILE} ]; then
conf_found=yes
fi
# see if the user wants us to use a custom config file
if [ "x${custom_conf}" = "xyes" ]; then
if [ -r ${local_conf} ]; then
conf_found=yes
_CONF_FILE=${local_conf}
fi
fi
# only do the following if we have found a config file to use
if [ "x${conf_found}" = "xyes" ]; then
if [ -r ${_CONF_FILE} ]; then
echo "Reading settings from ${_CONF_FILE}"
. ${_CONF_FILE}
fi
fi
# setup the compression type
case "${COMPRESS_TYPE}" in
bzip2) COMPRESS_EXTN=.bz2
compressed=yes
;;
gzip) COMPRESS_EXTN=.gz
compressed=yes
;;
none) COMPRESS_EXTN=""
compressed=no
;;
*) echo "***ERROR*** Unknown COMPRESS_TYPE specified - Only bzip2 and gzip are currently supported."
exit 1
;;
esac
# setup the compression tool and arguments
if [ "x${compressed}" = "xyes" ]; then
if [ "x${COMPRESS_TYPE}" = "xgzip" -a "x${COMPRESS_TOOL}" = "x" ]; then
COMPRESS_TOOL="@gzcat@"
fi
if [ "x${COMPRESS_TYPE}" != "xgzip" -a "x${COMPRESS_TOOL}" = "x" ]; then
echo "***ERROR*** A non-default COMPRESS_TYPE has been specified without a COMPRESS_TOOL"
exit 1
fi
fi
VUL_SOURCE="${FETCH_PROTO}://${FETCH_PATH}/pkg-vulnerabilities${COMPRESS_EXTN}"
if [ ! -d ${PKGVULNDIR}/. ]; then
echo "Creating ${PKGVULNDIR}"
/bin/mkdir ${PKGVULNDIR}
if [ ! -d ${PKGVULNDIR} ]; then
echo "***ERROR*** Can't create: ${PKGVULNDIR}"
exit 1
fi
fi
if [ ! "x${FETCH_PROTO}" = "xhttp" -a ! "x${FETCH_PROTO}" = "xftp" ]; then
echo "***ERROR*** Unknown FETCH_PROTO specified - Only http and ftp are currently supported."
exit 1
fi
cd ${PKGVULNDIR}
utility=`basename "${FETCH_CMD}"`
case "${utility}" in
curl|fetch|ftp) ${FETCH_CMD} ${FETCH_ARGS} \
-o ${NEW_VUL_LIST}${COMPRESS_EXTN} ${VUL_SOURCE} ;;
wget) ${FETCH_CMD} ${FETCH_ARGS} \
-O ${NEW_VUL_LIST}${COMPRESS_EXTN} ${VUL_SOURCE} ;;
*) echo "Unknown fetch command - please use send-pr to send in support for your fetch command" 1>&2
exit 1
;;
esac
# see if we got a file
if [ ! -f "${NEW_VUL_LIST}${COMPRESS_EXTN}" ]; then
echo "***ERROR*** Download of vulnerabilities file failed" 1>&2
exit 1
fi
# decompress the downloaded file and delete the download
if [ "x${compressed}" = "xyes" ]; then
${COMPRESS_TOOL} ${NEW_VUL_LIST}${COMPRESS_EXTN} > ${NEW_VUL_LIST}
/bin/rm -f ${NEW_VUL_LIST}${COMPRESS_EXTN}
fi
# compare the old and new files to see if there's a difference
if [ -f ${EXIST_VUL_LIST} ]; then
exist_hash=`${AP} -g ${EXIST_VUL_LIST}`
new_hash=`${AP} -g ${NEW_VUL_LIST}`
if [ "x${exist_hash}" != "x${new_hash}" ]; then
neednew=yes
else
echo "No change from existing package vulnerabilities file"
/bin/rm -f ${NEW_VUL_LIST}
exit 0
fi
else
neednew=yes
fi
# check the hash and/or sig on the new file
if [ "x${verify}" = "xyes" ]; then
${AP} -s -h ${NEW_VUL_LIST}
else
${AP} -h ${NEW_VUL_LIST}
fi
ec=$?;
if [ $ec -ne 0 ]; then
echo "***ERROR*** Failed to verify the newly downloaded vulnerabilities file" 1>&2
/bin/rm -f ${NEW_VUL_LIST}
exit 1
fi
# move the new file into position
echo "Package vulnerabilities file has been updated"
/bin/chmod a+r ${NEW_VUL_LIST}
/bin/mv -f ${NEW_VUL_LIST} ${EXIST_VUL_LIST}
exit 0
|
