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#!/bin/bash
# vim: set fileencoding=utf-8 ts=4 sw=4 noexpandtab
PORTICRON_VERSION="0.7"
version() {
echo "porticron ${PORTICRON_VERSION}"
echo "Copyright (c) 2008-2009 Benedikt Böhm <bb@xnull.de>"
exit 0
}
usage() {
echo "Usage: porticron [-hvn] [-c <file>]"
echo
echo " -h print this help text"
echo " -v enable verbose output"
echo " -V print version number"
echo " -n do not send upgrade mails"
echo " -c <file> use configuration in <file>"
echo
exit 0
}
log() {
[[ ${VERBOSE} -eq 1 ]] && echo "$@" >&2
}
send_mail() {
if [[ ${NOMAIL} -eq 1 ]]; then
if [[ ${VERBOSE} -eq 1 ]]; then
cat
else
cat > /dev/null
fi
else
${SENDMAIL:-/usr/sbin/sendmail} -t
fi
}
mkhash() {
echo "${1}" | md5sum | cut -f1 -d' '
}
save_msg() {
HASH_FILE="${TMP}${1}"
log "creating hash file ${HASH_FILE}"
mkhash "${2}" > "${HASH_FILE}"
}
# Test if msg with id $1 and body $2 is equal to previous saved msg
# Returns: 1 - if msg is equal, 0 - if msg is different, unknown, etc
check_msg() {
if [[ ${CHECK_DUP_MSG} -eq 0 ]]; then
return 0
fi
if [[ ${NOMAIL} -eq 1 ]]; then
return 0
fi
HASH_FILE="${TMP}${1}"
if [ ! -f "${HASH_FILE}" ]; then
log "no previous hash file ${HASH_FILE} exists"
save_msg "$1" "$2"
return 0
fi
OLD_HASH=$(cat "${HASH_FILE}")
NEW_HASH=$(mkhash "${2}")
if [[ "${OLD_HASH}" == "${NEW_HASH}" ]]; then
log "hash matched for hash file ${HASH_FILE}"
return 1
else
save_msg "$1" "$2"
log "hash unmatched for hash file ${HASH_FILE}"
return 0
fi
}
# parse command line
while getopts "hvVnc:" opt; do
case $opt in
h) usage;;
v) VERBOSE=1;;
V) version;;
n) NOMAIL=1;;
c) PORTICRON_CONF=${OPTARG};;
?) exit 1;;
esac
done
# defaults, more below
: ${VERBOSE:=0}
: ${NOMAIL:=0}
: ${PORTICRON_CONF:=/etc/porticron.conf}
: ${TMP:="/var/tmp/porticron."}
: ${CHECK_DUP_MSG:=1}
: ${SUBJECT:=Gentoo package updates on {FQDN\} [ {IP\} ]}
: ${SUBJECT_WARN:=WARNING: Gentoo security updates on {FQDN\} [ {IP\} ]}
log "using PORTICRON_CONF=${PORTICRON_CONF}, NOMAIL=${NOMAIL}, VERBOSE=${VERBOSE}"
# load config
if [[ ! -r ${PORTICRON_CONF} ]]; then
echo "could not open configuration file ${PORTICRON_CONF}"
exit 1
else
source ${PORTICRON_CONF}
fi
# detect some common variables
SCRIPT_NAME=$(basename $0)
FQDN=$(hostname --fqdn)
HOST=$(hostname -s)
IP=$(dig +short ${FQDN} | tr '\n' ' ')
DATE=$(date -R)
PORTDIR=$(portageq get_repo_path $(portageq envvar EROOT) gentoo)
# defaults, second half
: ${RCPT:=root@localhost}
: ${FROM:=root@${FQDN}}
: ${SYNC_CMD:=/usr/bin/emerge --sync}
: ${SYNC_OVERLAYS_CMD:=/bin/true}
# replace variables
for var in FQDN HOST IP DATE; do
SUBJECT=${SUBJECT/\{$var\}/${!var}}
SUBJECT_WARN=${SUBJECT_WARN/\{$var\}/${!var}}
done
# sync if desired
log "running SYNC_CMD: ${SYNC_CMD}"
${SYNC_CMD} &>/dev/null
log "running SYNC_OVERLAY_CMD: ${SYNC_OVERLAYS_CMD}"
${SYNC_OVERLAYS_CMD} &>/dev/null
# run emerge once to perform global updates while not cluttering mail output
/usr/bin/emerge --info &>/dev/null
# GLSA check
log "running GLSA_AFFECTED: /usr/bin/glsa-check --test --nocolor --verbose affected"
GLSA_AFFECTED=$(/usr/bin/glsa-check --test --nocolor --verbose affected 2>/dev/null)
log "running GLSA_UPGRADES: /usr/bin/glsa-check --nocolor --pretend affected"
GLSA_UPGRADES=$(/usr/bin/glsa-check --nocolor --pretend affected | grep '^ ')
if [[ -n ${GLSA_AFFECTED} ]]; then
if check_msg GLSA_AFFECTED "${GLSA_AFFECTED}"; then
GLSA_MSG="
${SCRIPT_NAME} has detected that this system is affected by the following GLSAs:
$(echo "${GLSA_AFFECTED}" | sed 's/^20/ 20/')
========================================================================
The following updates should be performed for these GLSAs:
${GLSA_UPGRADES}
"
cat <<EOF | send_mail
To: ${RCPT}
From: ${FROM}
Subject: ${SUBJECT_WARN}
Date: ${DATE}
porticron report [${DATE}]
========================================================================
${GLSA_MSG}
--
${SCRIPT_NAME}
EOF
fi
fi
# build a list of changed ebuilds
if [[ -n ${DIFF_CMD} ]]; then
log "running DIFF_CMD: ${DIFF_CMD}"
DIFF=$(${DIFF_CMD} 2>/dev/null)
fi
if [[ -n ${DIFF} ]]; then
DIFF_MSG="${SCRIPT_NAME} has detected the following changes to ${PORTDIR}:
${DIFF}
========================================================================
"
fi
# build list of upgrades
: ${UPGRADE_OPTS:=--deep --update}
log "running UPGRADE_CMD: /usr/bin/emerge ${UPGRADE_OPTS} --quiet --pretend world"
UPGRADE=$(/usr/bin/emerge ${UPGRADE_OPTS} --quiet --pretend world 2>/dev/null)
if [[ -n ${UPGRADE} ]]; then
UPGRADE_MSG="
${SCRIPT_NAME} has detected that some packages need upgrading:
$(echo "${UPGRADE}" | sed 's/^\[/ [/')
========================================================================
You can perform the upgrade by issuing the command:
emerge ${UPGRADE_OPTS} world
as root on ${FQDN}
It is recommended that you pretend the upgrade first to confirm that
the actions that would be taken are reasonable. The upgrade may be
pretended by issuing the command:
emerge ${UPGRADE_OPTS} --pretend world
"
fi
# send mail
if [[ -z ${UPGRADE_MSG} && -z ${DIFF_MSG} ]]; then
log "no upgrades found, exiting."
exit 0
fi
# We need to execute both check_msg actually to save hash files
check_msg UPGRADE_MSG "${UPGRADE_MSG}"
UPGRADE_MSG_CODE=$?
# TODO: Output of DIFF_MSG can contain dates and status of currently installed packages.
# This will trigger e-mail sending even if e.g. eix cache is not changed.
check_msg DIFF_MSG "${DIFF_MSG}"
DIFF_MSG_CODE=$?
if [[ ${UPGRADE_MSG_CODE} -eq 1 && ${DIFF_MSG_CODE} -eq 1 ]]; then
log "no new upgrades found, exiting."
exit 0
fi
cat <<EOF | send_mail
To: ${RCPT}
From: ${FROM}
Subject: ${SUBJECT}
Date: ${DATE}
porticron report [${DATE}]
========================================================================
${DIFF_MSG}${UPGRADE_MSG}
--
${SCRIPT_NAME}
EOF
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