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Current File : /sbin/apticron
#!/bin/bash -e

# Character set handling differs between the different mailx
# implementations in Debian. Make sure we send proper headers, and a
# text/plain content type.
Mailx() {
    MAIL_BODY_FILE=$(tempfile)
    cat > "$MAIL_BODY_FILE"
    if [ "x$GPG_ENCRYPT" = "x1" ] && gpg --list-public-keys "$EMAIL" > /dev/null 2>&1; then
        MAIL_ENC_FILE=$(tempfile)
        gpg --trust-model always --batch --armor --encrypt --recipient "$EMAIL" < "$MAIL_BODY_FILE" > "$MAIL_ENC_FILE"
        mv "$MAIL_ENC_FILE" "$MAIL_BODY_FILE"
    fi

    local MAILER="`readlink -e /usr/bin/mailx`"
    if [ x$MAILER = "x/usr/bin/heirloom-mailx" -o x$MAILER = "x/usr/bin/s-nail" ]
	then
		# heirloom-mailx creates correct headers, but needs help
		# if the terminal charset (LC_CTYPE) is no UTF-8 locale
		if [ -n "$CUSTOM_FROM" ] ; then
			/usr/bin/mailx -S ttycharset=utf-8 -r "$CUSTOM_FROM" "$@" < "$MAIL_BODY_FILE"
		else
			/usr/bin/mailx -S ttycharset=utf-8 "$@" < "$MAIL_BODY_FILE"
		fi
	else
		# bsd-mailx/mailutils' mailx don't do character set
		# conversion, but do not support MIME either.
		if [ -n "$CUSTOM_FROM" ] ; then
			/usr/bin/mailx -a "MIME-Version: 1.0" \
				-a "Content-type: text/plain; charset=UTF-8" \
				-a "Content-transfer-encoding: 8bit" \
				-a "From: $CUSTOM_FROM" \
				"$@" < "$MAIL_BODY_FILE"
		else
			/usr/bin/mailx -a "MIME-Version: 1.0" \
				-a "Content-type: text/plain; charset=UTF-8" \
				-a "Content-transfer-encoding: 8bit" \
				"$@" < "$MAIL_BODY_FILE"
		fi
	fi
    rm "$MAIL_BODY_FILE"
}

if [ "x$1" = "x--cron" ] ; then

	shift
	tsfile='/var/lib/apticron/cron_run'

	# Run only once a day ( grant 59 mins allowance )
	test "x$( find $tsfile -mmin -1381 2>/dev/null )" = "x$tsfile" && exit 0

	# Update the time-stamp file
	LC_TIME=C touch -d "$( date +%H:%M )" "$tsfile" || true
fi

if [ -n "$1" ]; then
	echo "Usage: apticron [--cron]"
	echo "Mails a list of packages that are pending-upgrade to the"
	echo "email address specified in /etc/apticron/apticron.conf"
	echo "--cron:  used when invoked by cron in order to run no"
	echo "         more than once a day."
	exit 1
fi

# Set $DIRCACHE
eval `/usr/bin/apt-config shell DIRCACHE Dir::Cache`

# Source lsb-release so we know what distribution we are
DISTRIB_ID="Debian"    # Default to Debian
[ -e /etc/lsb-release ] && . /etc/lsb-release

# Source the default config file
. /usr/lib/apticron/apticron.conf

# Source the config file
[ -e /etc/apticron/apticron.conf ] && . /etc/apticron/apticron.conf

# Force resolving and showing all FQDNs
if [ "$ALL_FQDNS" = "1" ] ; then
	SYSTEM=`/bin/hostname --all-fqdns`
fi

if [ -z "$IPADDRESSES" ] && [ -x /sbin/ip ]; then
	# Set the IPv4 addresses
	IPADDRESSES=`(echo $( /bin/hostname --all-ip-addresses ) ;
		     /sbin/ip -f inet addr show scope global 2> /dev/null | \
		     /bin/grep "scope global" |\
		     /usr/bin/head -$IPADDRESSNUM |\
		     /usr/bin/awk '{ print $2 }' |\
             /usr/bin/cut -d/ -f1) || true`

	# Set the IPv6 addresses
	IPADDRESSES="$IPADDRESSES `/sbin/ip -f inet6 addr show scope global -deprecated -dadfailed -temporary -tentative 2> /dev/null | \
	                           /bin/grep "scope global" | \
		            		   /usr/bin/head -$IPADDRESSNUM |\
				               /usr/bin/awk '{ print $2 }' |\
	            			   /usr/bin/cut -d/ -f1`"
fi

# Turn our list of addresses into nicely formatted output
ADDRESSES=""
if [ -n "$IPADDRESSES" ] ; then
	for address in $IPADDRESSES; do
		# Add the Address
		ADDRESSES="${ADDRESSES} ${address}"
	done
    ADDRESSES=$(echo $ADDRESSES |\
                /bin/sed 's/\s/\n/g' |\
                /usr/bin/sort |\
                /usr/bin/uniq)

	ADDRESSES=`echo $ADDRESSES | /usr/bin/fmt -w68 |\
		   /bin/sed 's/^/\t[ /;s/\$/ ]/'`
	ADDRESSES=`echo -e "\n$ADDRESSES"`
fi

# update the package lists
/usr/bin/apt-get -qq update || true

# get the list of packages which are pending an upgrade
PKGNAMES=`/usr/bin/apt-get -q -y --ignore-hold --allow-change-held-packages --allow-unauthenticated -s dist-upgrade | \
          /bin/grep ^Inst | /usr/bin/cut -d\  -f2 | /usr/bin/sort`

# creating the future last_run file
TMPFILE="$(mktemp -t apticron.XXXXXXXXXX)"
for p in $PKGNAMES; do
	echo $p >> $TMPFILE
done

# workaround to handle apt-get installing packages hold by aptitude. See #137771.
APTITUDE_HOLDS=`grep "^State: 2" -B 3 /var/lib/aptitude/pkgstates 2>/dev/null |grep "^Package: .*$" |cut -d" " -f 2`
DSELECT_HOLDS=`dpkg --get-selections |grep "hold$" |cut -f1`

if [ "$NOTIFY_HOLDS" = "0" ]; then
	# packages hold by aptitude don't go to the upgrading candidates list
	for p in $APTITUDE_HOLDS; do
		PKGNAMES=`echo $PKGNAMES |sed "s/\(^\| \)$p\( \|$\)/ /g;s/^ //g"`
	done
	# packages hold by dselect don't go to the upgrading candidates list
	for p in $DSELECT_HOLDS; do
		PKGNAMES=`echo $PKGNAMES |sed "s/\(^\| \)$p\( \|$\)/ /g;s/^ //g"`
	done
fi

if [ "$NOTIFY_NEW" = "0" ]; then
	# new packages don't go to the upgrading candidates list (see #531002)
	for p in $PKGNAMES; do
        	if [ -z "`dpkg -s $p 2>/dev/null| grep '^Status: install ok installed'`" ] ; then
	       		PKGNAMES=`echo $PKGNAMES |sed "s/\(^\| \)$p\( \|$\)/ /g;s/^ //g"`
		fi
	done
fi

NUM_PACKAGES=`echo $PKGNAMES |wc -w`

# Custom subject
if [ -n "$CUSTOM_SUBJECT" ] ; then
	MAILX_SUBJECT=$(eval "echo \"${CUSTOM_SUBJECT}\"")
else
	MAILX_SUBJECT="$NUM_PACKAGES $DISTRIB_ID package update(s) for $SYSTEM"
fi

# Custom no update subject
if [ -n "$CUSTOM_NO_UPDATES_SUBJECT" ] ; then
	MAILX_NO_UPDATE_SUBJECT=$(eval "echo \"${CUSTOM_NO_UPDATES_SUBJECT}\"")
else
	MAILX_NO_UPDATE_SUBJECT="No updates for $SYSTEM"
fi

# packages already reported won't be reported again if DIFF_ONLY option is marked
LAST_RUN_FILE="/var/lib/apticron/last_run"
if [ "$DIFF_ONLY" = "1" ] && [ -e "$LAST_RUN_FILE" ]; then
	EXTRA_REPORT=" since the last run"
	for p in `cat $LAST_RUN_FILE`; do
		PKGNAMES=`echo $PKGNAMES |sed "s/\(^\| \)$p\( \|$\)/ /g;s/^ //g"`
	done
fi

if [ -n "$PKGNAMES" ] ; then

	# do the upgrade downloads
    /usr/bin/apt-get --allow-change-held-packages --ignore-hold -qq -d dist-upgrade > /dev/null

  (
	/bin/cat <<EOF
apticron report [`/bin/date -R`]
========================================================================

apticron has detected that some packages need upgrading on:

	$SYSTEM $ADDRESSES

The following packages are currently pending an upgrade$EXTRA_REPORT:

EOF

	PKGPATH="/${DIRCACHE}/archives/"
	for PKG in $PKGNAMES ; do
		VER=`LC_ALL=C /usr/bin/apt-cache policy $PKG |\
		     /bin/grep Candidate: | /usr/bin/cut -f 4 -d \ `
		VERFILE=`echo "$VER" | /bin/sed -e "s/:/%3a/g"`
                if ls ${PKGPATH}${PKG}_${VERFILE}_*.deb >& /dev/null ; then
			DEBS="$DEBS ${PKGPATH}${PKG}_${VERFILE}_*.deb"
		fi
		echo -e "\t"$PKG $VER
	done

	if [ "$DIFF_ONLY" = "1" ] && [ -e "$LAST_RUN_FILE" ]; then
		echo -e "\n(there are $(grep -xf $LAST_RUN_FILE $TMPFILE |wc -l) other packages previously reported to you pending an upgrade!)"
	fi

	MISSING_DEBS=`apt-get -y --ignore-hold --allow-change-held-packages --allow-unauthenticated --print-uris dist-upgrade \
                          | grep "file:" \
                          | sed "s/'file:\(.*\)' .*/\1/g"`

	DEBS=`echo $MISSING_DEBS $DEBS | /usr/bin/sort`

	/bin/cat <<EOF

========================================================================

Package Details:

EOF

	if [ -x /usr/bin/apt-listchanges ] ; then
		if [ -z "$LISTCHANGES_PROFILE" ] ; then
			/usr/bin/apt-listchanges --which=both --headers -f text $DEBS
		else
			/usr/bin/apt-listchanges -f text --profile=$LISTCHANGES_PROFILE $DEBS
		fi
	else
		echo "Install 'apt-listchanges' to see what's new in these packages."
		echo
	fi

	/bin/cat <<EOF
========================================================================

You can perform the upgrade by issuing the command:

	apt-get dist-upgrade

as root on $SYSTEM
EOF

	if [ -n "$DSELECT_HOLDS" ] ; then
        	/bin/cat <<EOF

========================================================================

INFO: the following packages are on hold, then will not be upgraded even if
they have been present in the upgrading candidates list:

`echo -e "\t" $DSELECT_HOLDS`
EOF
	fi

	if [ -n "$APTITUDE_HOLDS" ] ; then
        	/bin/cat <<EOF

WARNING: the following packages were put on hold by aptitude but will be
upgraded anyway *in case of using apt-get to do so*:

`echo -e "\t" $APTITUDE_HOLDS`

If you don't want them to be upgraded please use aptitude to upgrade your
system. This is necessary because aptitude's holds are currently ignored by
both dselect and apt-get. For more info please see #137771.
EOF
	fi

        /bin/cat <<EOF

--
apticron
EOF

   ) 2>&1 | Mailx -s "$MAILX_SUBJECT" $EMAIL

elif  [ "$NOTIFY_NO_UPDATES" = "1" ] ; then
  (
        /bin/cat <<EOF
No new packages today.
EOF

   ) 2>&1 | Mailx -s "$MAILX_NO_UPDATE_SUBJECT" $EMAIL
fi

# updating the last_run file
mv $TMPFILE $LAST_RUN_FILE

exit 0

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