Initial class construction

This commit is contained in:
João Narciso
2019-05-06 16:34:28 +02:00
parent 67f2d57e03
commit 431ff5f7d4
5813 changed files with 1622108 additions and 0 deletions

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#! /bin/sh
# Make backups.
# Copyright 2004-2019 Free Software Foundation, Inc.
# This file is part of GNU tar.
# GNU tar 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 of the License, or
# (at your option) any later version.
# GNU tar 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 this program. If not, see <http://www.gnu.org/licenses/>.
PROGNAME=`basename $0`
CONFIGPATH="$SYSCONFDIR/backup"
REMOTEBACKUPDIR="$SYSCONFDIR/tar-backup"
CONFIGFILE=${CONFIGPATH}/backup-specs
DIRLIST=${CONFIGPATH}/dirs
FILELIST=${CONFIGPATH}/files
LOGPATH=${CONFIGPATH}/log
# Default functions for running various magnetic tape commands
mt_begin() {
$MT -f "$1" retension
}
mt_rewind() {
$MT -f "$1" rewind
}
mt_offline() {
$MT -f "$1" offl
}
mt_status() {
$MT -f "$1" status
}
# The main configuration file may override any of these variables
MT_BEGIN=mt_begin
MT_REWIND=mt_rewind
MT_OFFLINE=mt_offline
MT_STATUS=mt_status
# Insure 'mail' is in PATH.
PATH="/usr/ucb:${PATH}"
export PATH
# Put startdate in the subject line of mailed report, since if it happens
# to run longer than 24 hours (as may be the case if someone forgets to put
# in the next volume of the tape in adequate time), the backup date won't
# appear too misleading.
startdate="`date`"
here="`pwd`"
# Save local hostname
localhost="`hostname | sed -e 's/\..*//' | tr A-Z a-z`"
# Produce a diagnostic output
message() {
if [ "$VERBOSE" != "" ]; then
if [ $VERBOSE -ge $1 ]; then
shift
echo "$@" >&2
fi
fi
}
# Bail out and exit.
bailout() {
echo "$PROGNAME: $*" >&2
exit 1
}
# Return current date
now() {
date +%Y-%m-%d
}
# Bail out if we don't have root privileges.
test_root() {
if [ ! -w ${ROOT_FS-/} ]; then
bailout "The backup must be run as root or else some files will fail to be dumped."
fi
}
root_fs() {
echo "${ROOT_FS}$1" | tr -s /
}
advice() {
echo "Directory $1 is not found." >&2
cat >&2 <<EOF
The following directories and files are needed for the backup to function:
1. Directory with configuration files and file lists:
$CONFIGPATH
2. Directory for backup log files
$LOGPATH
3. Main configuration file
$CONFIGFILE
Please, create these and invoke the script again.
EOF
}
init_common() {
# Check if the necessary directories exist
if [ ! -d $CONFIGPATH ]; then
advice $CONFIGPATH
exit 1
fi
if [ ! -d $LOGPATH ]; then
if mkdir $LOGPATH; then
:
else
advice $LOGPATH
exit 1
fi
fi
# Get the values of BACKUP_DIRS, BACKUP_FILES, and other variables.
if [ ! -r $CONFIGFILE ]; then
echo "$PROGNAME: cannot read $CONFIGFILE. Stop." >&2
exit 1
fi
. $CONFIGFILE
# Environment sanity check
test_root
if [ x"${ADMINISTRATOR}" = x ]; then
bailout "ADMINISTRATOR not defined"
fi
[ x"$TAR" = x ] && TAR=tar
[ x"$SLEEP_TIME" = x ] && SLEEP_TIME=60
if [ x$VOLNO_FILE = x ]; then
bailout "VOLNO_FILE not specified"
fi
if [ -r $DIRLIST ]; then
BACKUP_DIRS="$BACKUP_DIRS `cat $DIRLIST`"
fi
if [ -r $FILELIST ]; then
BACKUP_FILES="$BACKUP_FILES `cat $FILELIST`"
fi
if [ \( x"$BACKUP_DIRS" = x \) -a \( x"$BACKUP_FILES" = x \) ]; then
bailout "Neither BACKUP_DIRS nor BACKUP_FILES specified"
fi
if [ -z "$RSH" ]; then
RSH=rsh
MT_RSH_OPTION=
else
MT_RSH_OPTION="--rsh-command=$RSH"
fi
if [ -z "$TAPE_FILE" ]; then
TAPE_FILE=/dev/tape
fi
# If TAPE_FILE is a remote device, update mt invocation accordingly
: ${MT:=mt}
case $TAPE_FILE in
*:*) MT="$MT $MT_RSH_OPTION";;
*) ;;
esac
POSIXLY_CORRECT=1
export POSIXLY_CORRECT
}
init_backup() {
init_common
TAR_PART1="${TAR} -c --format=gnu --multi-volume --one-file-system --sparse --volno-file=${VOLNO_FILE}"
if [ "x$XLIST" != x ]; then
TAR_PART1="${TAR_PART1} \`test -r $REMOTEBACKUPDIR/$XLIST && echo \"--exclude-from $REMOTEBACKUPDIR/$XLIST\"\`"
fi
if [ "$RSH_COMMAND" != "" ]; then
TAR_PART1="${TAR_PART1} --rsh-command=$RSH_COMMAND"
fi
if [ x$BLOCKING != x ]; then
TAR_PART1="${TAR_PART1} --blocking=${BLOCKING}"
fi
# Only use --info-script if DUMP_REMIND_SCRIPT was defined in backup-specs
if [ "x${DUMP_REMIND_SCRIPT}" != "x" ]; then
TAR_PART1="${TAR_PART1} --info-script='${DUMP_REMIND_SCRIPT}'"
fi
# Set logfile name
# Logfile name should be in the form 'log-1993-03-18-level-0'
# They go in the directory '/usr/etc/log'.
# i.e. year-month-date. This format is useful for sorting by name, since
# logfiles are intentionally kept online for future reference.
LOGFILE="${LOGPATH}/log-`now`-level-${DUMP_LEVEL}"
}
init_restore() {
init_common
# FIXME: Replace --list with --extract
TAR_PART1="${TAR} --extract --multi-volume"
if [ "$RSH_COMMAND" != "" ]; then
TAR_PART1="${TAR_PART1} --rsh-command=$RSH_COMMAND"
fi
if [ x$BLOCKING != x ]; then
TAR_PART1="${TAR_PART1} --blocking=${BLOCKING}"
fi
# Only use --info-script if DUMP_REMIND_SCRIPT was defined in backup-specs
if [ "x${DUMP_REMIND_SCRIPT}" != "x" ]; then
TAR_PART1="${TAR_PART1} --info-script='${DUMP_REMIND_SCRIPT}'"
fi
LOGFILE="${LOGPATH}/restore-`now`"
}
wait_time() {
if [ "${1}" != "now" ]; then
if [ "${1}x" != "x" ]; then
spec="${1}"
else
spec="${BACKUP_HOUR}"
fi
pausetime="`date | awk -v spec=\"${spec}\" '
BEGIN {
split(spec, time, ":")
}
{
split($4, now, ":")
diff = 3600 * (time[1] - now[1]) + 60 * (time[2] - now[2]);
if (diff < 0)
diff += 3600 * 24
print diff
}'`"
clear
echo "${SLEEP_MESSAGE}"
sleep "${pausetime}"
fi
}
level_log_name() {
echo "$REMOTEBACKUPDIR/${1}.level-${2-$DUMP_LEVEL}"
}
# Prepare a temporary level logfile
# usage: make_level_log HOSTNAME
make_level_log() {
if [ "z${localhost}" != "z$1" ] ; then
$RSH "$1" mkdir $REMOTEBACKUPDIR > /dev/null 2>&1
$RSH "$1" rm -f `level_log_name temp`
else
mkdir $REMOTEBACKUPDIR > /dev/null 2>&1
rm -f `level_log_name temp`
fi
}
# Rename temporary log
# usage: flush_level_log HOSTNAME FSNAME
flush_level_log() {
message 10 "RENAME: `level_log_name temp` --> `level_log_name $2`"
if [ "z${localhost}" != "z$1" ] ; then
$RSH "$1" mv -f `level_log_name temp` "`level_log_name $2`"
else
mv -f `level_log_name temp` "`level_log_name $2`"
fi
}
# Return the timestamp of the last backup.
# usage: get_dump_time LEVEL
get_dump_time() {
ls -r ${LOGPATH}/log-*-level-$1 \
| head -n 1 \
| sed "s,.*log-\(.*\)-level-$1,\1,"
}
# Do actual backup on a host
# usage: backup_host HOSTNAME [TAR_ARGUMENTS]
backup_host() {
message 10 "ARGS: $@"
rhost=$1
shift
if [ "z${localhost}" != "z$rhost" ] ; then
$RSH "$rhost" ${TAR_PART1} -f "${localhost}:${TAPE_FILE}" $@
else
# Using 'sh -c exec' causes nested quoting and shell substitution
# to be handled here in the same way rsh handles it.
CMD="exec ${TAR_PART1} -f \"${TAPE_FILE}\" $@"
message 10 "CMD: $CMD"
sh -c "$CMD"
RC=$?
message 10 "RC: $RC"
return $RC
fi
}
print_level() {
if [ ${1-$DUMP_LEVEL} -eq 0 ]; then
echo "Full"
else
echo "Level ${1-$DUMP_LEVEL}"
fi
}
prev_level() {
print_level `expr $DUMP_LEVEL - 1` | tr A-Z a-z
}
remote_run() {
rhost=$1
shift
message 10 "REMOTE $rhost: $@"
if [ "x$rhost" != "x${localhost}" ] ; then
$RSH "${rhost}" "$@"
else
$*
fi
}
license() {
cat - <<EOF
Copyright (C) 2013 Free Software Foundation, Inc.
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
}

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#!/bin/sh
# This file is included in the GNU tar distribution as an example. It is
# not used by default unless the proper line is uncommented in backup-specs.
# System administrators will probably want to customize this and
# backup-specs for their site.
#
# This script should be run by tar with --info-script (-F) to inform
# interested parties that a tape for the next volume of the backup needs to
# be put in the tape drive.
# Copyright 2004-2019 Free Software Foundation, Inc.
# This file is part of GNU tar.
# GNU tar 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 of the License, or
# (at your option) any later version.
# GNU tar 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 this program. If not, see <http://www.gnu.org/licenses/>.
# Include location of 'sendmail' and GNU finger.
PATH="/usr/lib:/usr/local/gnubin:${PATH}"
export PATH
# Load library routines
SYSCONFDIR=${SYSCONFDIR-/usr/etc}
. ${LIBPATH-/usr/lib/tar}/backup.sh
MT_REWIND
MT_OFFLINE
# Get a list of people to whom to mail a request for changing the tape.
# This egregious nightmare parses the output from GNU finger which shows
# which users are logged into consoles (and thus in the office and capable
# of changing tapes).
#
# Certain users (like 'root') aren't real users, and shouldn't be notified.
# Neither should 'zippy', 'elvis', etc. (on the GNU machines) since they're
# just test accounts.
recipients="`
finger .clients 2> /dev/null \
| sed -ne '
1{
/clientstatus: file has not changed in/{
n;n;n;n;d
}
n;n;d
}
s/^..................................................//
$!{/^$/d
/^root?*$/d
/^zippy$/d
/^fnord$/d
/^elvis$/d
/^snurd$/d
H
}
${g
: 1
s/\(\n\)\([A-Za-z0-9_][A-Za-z0-9_]*\)\(\n.*\)\2\(.*\)/\1\2\3\4/g
s/\n$//g
t 1
s/^\n//
s/\n$//g
s/\n/, /g
: 2
s/, ,/,/g
t 2
p
}'`"
# Customized behavior for FSF machines, to bring attention to the fact that
# the tape needs to be changed (who looks at the terminal?)
sendmail -oi -t << __EOF__
From: `basename $0` (backup tape-changing reminder)
To: ${recipients}
Cc: ${ADMINISTRATOR}
Subject: Backup needs new tape for volume ${TAR_VOLUME}
Reply-To: ${ADMINISTRATOR}
This is an automated report from the backup script running on
`hostname`.
Volume ${TAR_VOLUME} of the backup needs to be put in the tape drive.
Usually whoever prepared the backup leaves labeled tapes on top of the
drive itself. If there aren't any more, information about where to find
tapes and how to label them are posted on the wall by apple-gunkies
(unhelpfully obscured by a bookshelf). An online copy (which is probably
more up-to-date) can also be found in ~friedman/etc/fsf/backup.how.
__EOF__
echo "Please put volume ${TAR_VOLUME} in tape drive and press RETURN"
read input
echo "Writing volume ${TAR_VOLUME}..."
sendmail -oi -t << __EOF__
From: `basename $0` (backup tape-changing reminder)
To: ${recipients}
Cc: ${ADMINISTRATOR}
Subject: Volume ${TAR_VOLUME} for backup has been added
Reply-To: ${ADMINISTRATOR}
This is an automated report from the backup script running on
`hostname`.
The backup has been continued, so for now no further attention is required.
__EOF__
exit 0
# eof

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