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|
#!/bin/bash
#
# Update your system automatically!
#
# Packages from different sources are downloaded, under sub-shells, into the
# PACKAGE_DIR where they can be installed on reboot.
#
# A failure encountered at any point should abort any pending package updates
# to install.
#
# To enable sbotools updates, make the /etc/sbotools/sbotools.conf file exist
# and configure PKG_DIR to point to the same path as STAGING_DIR.
# Set to "yes" to send notification to stdout, causing cron to send an email.
NOTIFY="${NOTIFY:-no}"
# Reboot after this period for install after a successful update.
#
# Set to empty to disable reboot or 'now' to reboot immediately.
REBOOT_TIME="${REBOOT_TIME:-""}"
# Packages are copied here on successful download. All contents of this
# directory will be deleted.
PACKAGE_DIR="${PACKAGE_DIR:-/var/spool/slack-autoupdate}"
# Packages are temporarily stored here until success. All contents of this
# directory are deleted.
STAGING_DIR="/var/cache/slack-autoupdate/staging"
# Information of interest to the admin on success.
UPDATE_INFO="$STAGING_DIR/info.txt"
# Information of interest to the admin on failure.
UPDATE_ERROR="$STAGING_DIR/error.txt"
# Avoid concurrently running with another instance.
if [ "$(ls /var/lock/autoupdate.* 2>/dev/null)" ]; then
echo "Another instance of autoupdate is running. If this is not correct, you can remove /var/lock/autoupdate.* files and run autoupdate again." \
>>"$PACKAGE_DIR/$(basename "$UPDATE_ERROR")"
if [ "$NOTIFY" = "yes" ]; then
cat "$PACKAGE_DIR/$(basename "$UPDATE_ERROR")"
fi
exit 1
fi
touch /var/lock/autoupdate.$$
trap "rm -f /var/lock/autoupdate.$$" EXIT
# Keep it simple stupid, install pending updates first.
mkdir --parents "$PACKAGE_DIR"
if [ -n "$(find "$PACKAGE_DIR" -name "*.t*z")" ]; then
exit 0
fi
# Make the set of package updates available atomically by storing them in a
# temporary location until completion.
mkdir --parents "$STAGING_DIR"
find "$STAGING_DIR" -mindepth 1 | xargs rm -fr
if ! OUTPUT="$(
# Capture this subshell's error output to standard output.
exec 2>&1
echo "Checking updates for slackpkg..."
yes | slackpkg -batch=on -default_answer=yes update || exit "$?"
CHANGELOG_TXT="$(mktemp /tmp/slack-autoupdate.XXXXXX)"
PACKAGE_UPDATES="$(mktemp /tmp/slack-autoupdate.XXXXXX)"
trap "rm -f ${CHANGELOG_TXT} ${PACKAGE_UPDATES}" EXIT
slackpkg -batch=on -default_answer=n upgrade-all \
| grep "\.t.z$" \
| tee "$PACKAGE_UPDATES" \
|| exit "$?"
if [ ! -s "$PACKAGE_UPDATES" ]; then
# No updates
exit 0
fi
#
# This script needs to download updates from slackpkg into a particular
# directory, which slackpkg does not support. The following is a work
# around.
#
SOURCE=$(sed -n '
# Remove leading and trailing blanks
s/^[[:blank:]]*//
s/[[:blank:]]*$//
# Only one token is allowed per line
/[[:blank:]]/d
# A single solidus should end the URI
s,[/]*$,/,
# Print the lines beginning with one of the URI schemes we look for
\@^file://@p
\@^cdrom://@p
\@^local://@p
\@^https\{0,1\}://@p
\@^ftps\{0,1\}://@p' /etc/slackpkg/mirrors)
while read PKG; do
PKG_URL="$(
grep "${PKG}$" /var/lib/slackpkg/CHECKSUMS.md5 \
| tr -s ' ' \
| cut -f 2 -d ' '
)" || exit "$?"
wget \
--quiet \
--directory-prefix="$STAGING_DIR" \
"${SOURCE}${PKG_URL}" \
"${SOURCE}${PKG_URL}.asc" \
|| exit "$?"
done <"$PACKAGE_UPDATES"
gpg2 --verify-files "$STAGING_DIR"/*.asc || exit "$?"
(
# Provide update information to the user.
# Redirect this subshell's standard output to info file.
exec 1>>"$UPDATE_INFO"
LAST_INSTALLED_PACKAGE="$(
grep \
"$(ls /var/log/packages | sed "s/$/\\\|/g" | tr --delete '\n')v4EcFvjXKlWB" \
/var/lib/slackpkg/ChangeLog.txt \
| head -n 1
)"
echo "## Slackware updates"
echo
while read PKG; do
echo " - $PKG"
done <"$PACKAGE_UPDATES"
echo
echo "### Recent Changelog Entries"
grep --before-context 10000 "$LAST_INSTALLED_PACKAGE" /var/lib/slackpkg/ChangeLog.txt
echo
)
)"; then
>>"$UPDATE_ERROR" echo -e "slackpkg:\n\n$OUTPUT"
fi
if ! OUTPUT="$(
exec 2>&1
echo "Checking updates for sbotools..."
if [ ! -f /etc/sbotools/sbotools.conf ] \
|| [ "$(sed -n 's/PKG_DIR=//p' /etc/sbotools/sbotools.conf)" != "$STAGING_DIR" ]; then
# Assume sbotools is disabled.
exit 0
fi
source /etc/profile.d/*.sh
PACKAGE_UPDATES=$(mktemp /tmp/slack-autoupdate.XXXXXX)
trap "rm -f ${PACKAGE_UPDATES}" EXIT
(sbocheck | tee $PACKAGE_UPDATES) || exit 1
# Avoid checking for 'no updates available'. It will not
# work if you host 'overrides' purposely different than what is
# on SBO.
if ! grep "needs updating" "$PACKAGE_UPDATES"; then
exit 0
fi
sboupgrade \
--all \
--noinstall \
--nointeractive \
|| exit "$?"
(
exec 1>>"$UPDATE_INFO"
echo "## Slackbuild updates"
echo
cat "$PACKAGE_UPDATES"
echo
)
)"; then
if [ -f "$UPDATE_ERROR" ]; then
>>"$UPDATE_ERROR" echo ""
>>"$UPDATE_ERROR" echo ""
fi
>>"$UPDATE_ERROR" echo -e "sbotools:\n\n$OUTPUT"
fi
if [ -z "$(find "$STAGING_DIR" -name "*.t*z" -or -name "info.txt" -or -name "error.txt")" ]; then
# No updates
exit 0
fi
if [ "$NOTIFY" = "yes" ]; then
if [ -f "$UPDATE_ERROR" ]; then
echo "Failures were encountered while trying to download updates"
echo ""
cat "$UPDATE_ERROR"
elif [ -f "$UPDATE_INFO" ]; then
echo "# Updates pending installation"
echo ""
cat "$UPDATE_INFO"
fi
fi
if [ -f "$UPDATE_ERROR" ]; then
mv "$UPDATE_ERROR" "$PACKAGE_DIR"
if [ -f "$UPDATE_INFO" ]; then
mv "$UPDATE_INFO" "$PACKAGE_DIR"
fi
exit 1
fi
# Now that everything is successful.
find "$PACKAGE_DIR" -mindepth 1 | xargs rm -fr
mv "$STAGING_DIR"/* "$PACKAGE_DIR/"
if [ -n "$REBOOT_TIME" ]; then
nohup shutdown -r "$REBOOT_TIME" >/dev/null 2>&1 &
fi
|
