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#! /bin/sh
# This file is part of BEAM
# Copyright (C) 2012-2014 Sergey Poznyakoff
#
# BEAM 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 3, or (at your option)
# any later version.
#
# BEAM 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 BEAM. If not, see <http://www.gnu.org/licenses/>.
# Force C locale
LC_ALL=C
export LC_ALL
openlog_hook=
prologue_hook=
epilogue_hook=
# User configuration variables
backup_tar_options=
backup_suffix=
backup_archive_dir=
backup_snapshot_dir=
backup_verbose=
backup_logfile="/var/log/backup"
backup_pidfile="/var/run/beam.pid"
backup_tmp_dir=/tmp
error() {
echo >&2 $0: $*
}
logit() {
echo `date`: $*
}
abend() {
ec=$1
shift
error $@
exit $ec
}
beam_lock() {
if [ -r $backup_pidfile ]; then
pid=$(head -n 1 $backup_pidfile)
if [ -z "$pid" ]; then
abend 1 "pidfile $backup_pidfile exists but is unreadable or empty"
fi
abend 1 "another beam process (pid $pid) is still running; exiting"
fi
echo $$ > $backup_pidfile || exit 1
epilogue_hook="$epilogue_hook beam_unlock"
}
beam_unlock() {
rm -f $backup_pidfile
}
tarcode() {
case $1 in
0) logit "success";;
1) logit "some files changed while being archived";;
2) logit "fatal error occurred, but trying to continue anyway"
tarerror=$((tarerror + 1));;
*) logit "unexpected error code $1"
tarerror=$((tarerror + 1));
esac
}
load_config() {
local delayed_exit remote
test -z "$BEAM_CONFIG" && BEAM_CONFIG=@SYSCONFDIR@/beam.conf
if [ -r $BEAM_CONFIG ]; then
. $BEAM_CONFIG
else
abend 1 "configuration file $BEAM_CONFIG does not exist or is unreadable"
fi
if [ -z "$backup_items" ]; then
abend 1 "backup_items not specified"
fi
if [ -z "$backup_archive_dir" ]; then
if [ -n "$backup_bucket_name" ]; then
backup_archive_dir=$backup_mp_s3
else
abend 1 "backup_archive_dir not set"
fi
fi
delayed_exit=
loaded_types=
for item in $backup_items
do
eval type=\$${item}_type
if [ -z "$type" ]; then
error "${item}_type not set"
delayed_exit=1
continue
fi
if echo "$loaded_types" | grep -wq $type; then
:
elif [ -x $libdir/${type}.sh ]; then
. $libdir/${type}.sh || delayed_exit=1
loaded_types="$loaded_files
$type"
else
error "$libdir/${type}.sh not found"
delayed_exit=1
fi
${type}_check $item || delayed_exit=1
done
test -n "$delayed_exit" && abend 1 "aborting"
tar_suffix=${backup_suffix:-.tar}
if [ -n "$backup_bucket_name" ]; then
. @LIBDIR@/beam/s3.sh
prologue_hook="s3_mount $prologue_hook"
fi
remote=${backup_archive_dir%%:*}
if [ "$remote" != "$backup_archive_dir" ]; then
beam_rsh="${backup_rsh:-ssh} $remote"
backup_local_archive_dir=${backup_archive_dir#*:}
else
beam_rsh=
backup_local_archive_dir=$backup_archive_dir
fi
}
beam_exec() {
if [ -z "$beam_rsh" ]; then
set -- $(echo "$@" | sed 's/\\\\\([bcfnrtv0]\)/\\\1/g')
"$@"
else
set -- $(echo "$@" | sed 's/\\\\\([bcfnrtv0]\)/\\\1/g;s/[]\[\\\*]/\\&/g')
$beam_rsh "$@"
fi
}
runhook() {
local hook_list
eval hook_list=\$$1
for hook in $hook_list
do
$hook
done
}
print_version() {
name=$(basename $0)
cat <<EOF
$name (@PACKAGE_NAME@) @PACKAGE_VERSION@
Copyright (C) 2012 Sergey Poznyakoff
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
EOF
exit 0
}
wtf() {
l=$(echo "${1#beam-}"|sed "s|.|.|g")
s=$(echo " " | sed "s|$l|${1#beam-}|")
shift
echo " $s $@"
}
dry_mail() {
echo "============================================================="
cat -
echo "============================================================="
}
# mail_report FILE
mail_report() {
: ${backup_mailer_program:=/usr/sbin/sendmail -oi -t -F $backup_sender_email}
if [ -n "$dry_run" ]; then
echo "Sending mail using $backup_mailer_program"
backup_mailer_program=dry_mail
fi
if [ -z "$backup_sender_email" ]; then
backup_sender_email=root@$(hostname)
fi
case $backup_sender_email in
"<"*) ;;
*) backup_sender_email="<$backup_sender_email>"
esac
if [ -n "$backup_sender_personal" ]; then
case $backup_sender_personal in
\"*) ;;
*) backup_sender_personal="\"$backup_sender_personal\""
esac
backup_sender_personal="$backup_sender_personal "
fi
if [ -z "$backup_report_subject" ]; then
backup_report_subject="Backup of $(hostname) on $(date)"
fi
test -n "$backup_report_signature" &&
echo "$backup_report_signature" >> $report
(cat - <<EOF
From: ${backup_sender_personal}$backup_sender_email
To: $backup_notify_email
Subject: $backup_report_subject
X-Beam-Items: $backup_items
X-Beam-Round: $round
X-Beam-Level: $level
EOF
if [ -n "$backup_report_headers" ]; then
echo "$backup_report_headers"
fi
echo ""
if [ -n "$backup_report_intro" ]; then
echo "$backup_report_intro"
fi
cat $report
) | $backup_mailer_program
}
beam_logrotate() {
local conf=/tmp/beam-logrotate.conf u
if test -z "$backup_logrotate_conf"; then
backup_logrotate_conf="weekly
rotate 4
"
fi
u=$(umask)
umask 077
cat > $conf <<EOF
$backup_logfile {
$backup_logrotate_conf
missingok
}
EOF
umask $u
test -d @LOCALSTATEDIR@/lib/beam || mkdir @LOCALSTATEDIR@/lib/beam
logrotate ${dry_run+-d} $verbose --state @LOCALSTATEDIR@/lib/beam/logrotate.state $conf
rm $conf
}
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