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|
#!/usr/bin/perl
#=============================================================
#
# BackupPC_archiveHost: Archive files for a single host
#
# DESCRIPTION
#
# Usage: BackupPC_archiveHost tarCreatePath splitPath parPath host bkupNum \
# compPath fileExt splitSize outLoc parFile share
#
# This script is run for each host to create an archive.
#
# This script is executed by BackupPC_archive, based on the setting
# of $Conf{ArchiveClientCmd}. This script can be copied and modified
# for site-specific behavior. Update $Conf{ArchiveClientCmd} to point
# at your customized archive script.
#
# AUTHOR
# Craig Barratt <cbarratt@users.sourceforge.net>
# Josh Marshall
#
# COPYRIGHT
# Copyright (C) 2001-2020 Craig Barratt
#
# This program 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.
#
# This program 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/>.
#
#========================================================================
#
# Version 4.4.0, released 20 Jun 2020.
#
# See http://backuppc.sourceforge.net.
#
#========================================================================
use strict;
use File::Path;
use lib "__INSTALLDIR__/lib";
use BackupPC::Lib;
#
# Pick up the command-line arguments
#
if ( @ARGV != 11 ) {
print <<EOF;
Usage: $0 tarCreatePath splitPath parPath host bkupNum \\
compPath fileExt splitSize outLoc parFile share
EOF
exit(1);
}
my $tarCreate = $ARGV[0];
my $splitPath = $ARGV[1];
my $parPath = $ARGV[2];
my $host = $ARGV[3];
my $bkupNum = $ARGV[4];
my $compPath = $ARGV[5];
my $fileExt = $ARGV[6];
my $splitSize = $ARGV[7];
my $outLoc = $ARGV[8];
my $parfile = $ARGV[9];
my $share = $ARGV[10];
die("BackupPC::Lib->new failed\n") if ( !(my $bpc = BackupPC::Lib->new) );
#
# Make sure the specified programs are executable
#
foreach my $prog ( ($tarCreate, $compPath, $splitPath, $parPath) ) {
if ( $prog =~ /[][;&()<>{}|^\n\r\t *\$\\'"`?]/ ) {
print("Error: executable path $prog contains suspicious characters\n");
exit(1);
}
next if ( $prog eq "" || -x $prog );
print("Error: $prog is not an executable program\n");
exit(1);
}
my $mesg = "Writing tar archive for host $host, backup #$bkupNum";
#
# Build the command we will run
#
$share = $bpc->shellEscape($share);
$host = $bpc->shellEscape($host);
$bkupNum = $bpc->shellEscape($bkupNum);
$fileExt = $bpc->shellEscape($fileExt);
$splitSize = $bpc->shellEscape($splitSize);
$parfile = $bpc->shellEscape($parfile);
my $outLocE = $bpc->shellEscape($outLoc);
#
# We prefer to use /bin/csh because the exit status of a pipeline
# is non-zero if any command is non zero. In contrast, /bin/sh
# and /bin/bash use the convention that the exit status is just
# the exit status of the last command of the pipeline.
#
my @shell;
if ( -x "/bin/csh" ) {
@shell = ("/bin/csh", "-cf");
} elsif ( -x "/bin/sh" ) {
@shell = ("/bin/sh", "-c");
} else {
print("Error: Can't find executable /bin/csh or /bin/sh\n");
exit(1);
}
my $cmd = "$tarCreate -t -h $host -n $bkupNum -s $share . ";
$cmd .= "| $compPath " if ( $compPath ne "cat" && $compPath ne "/bin/cat" && $compPath ne "" );
if ( -b $outLoc || -c $outLoc || -f $outLoc ) {
#
# Output file is a device or a regular file, so don't use split
#
$cmd .= ">> $outLocE";
$mesg .= " to $outLoc";
} else {
mkpath($outLoc) if ( !-d $outLoc );
if ( !-d $outLoc ) {
print("Error: unable to create output directory $outLoc\n");
exit(1);
}
if ( $splitSize > 0 && -x $splitPath ) {
$cmd .= "| $splitPath -b $splitSize - $outLocE/$host.$bkupNum.tar$fileExt.";
$mesg .= ", split to output files $outLocE/$host.$bkupNum.tar$fileExt.*";
} else {
$cmd .= "> $outLocE/$host.$bkupNum.tar$fileExt";
$mesg .= " to output file $outLocE/$host.$bkupNum.tar$fileExt";
}
}
print("$mesg\n");
#
# Run the command
#
my $ret = system(@shell, $cmd);
if ( $ret ) {
print("Executing: @shell $cmd\n");
print("Error: $tarCreate, compress or split failed\n");
exit(1);
}
#
# Run optional parity file generation (only if the output is a directory,
# ie: not a tape device).
#
if ( -d $outLoc && -x $parPath ) {
if ( length($parfile) && $parfile != 0 ) {
print("Running $parPath to create parity files\n");
my $parCmd =
"$parPath c -r$parfile $outLocE/$host.$bkupNum.tar$fileExt.par2 $outLocE/$host.$bkupNum.tar$fileExt*";
$ret = system($parCmd);
if ( $ret ) {
print("Executing: $parCmd\n");
print("Error: $parPath failed\n");
exit(1);
}
}
}
|
