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Marko Oldenburg
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################################################################
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# $Id: 98_backup.pm 18643 2019-02-19 14:33:01Z CoolTux $
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# vim: ts=2:et
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#
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# (c) 2012 Copyright: Martin Fischer (m_fischer at gmx dot de)
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# Maintained by Marko Oldenburg since 2019
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# All rights reserved
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#
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# This script free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# The GNU General Public License can be found at
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# http://www.gnu.org/copyleft/gpl.html.
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# A copy is found in the textfile GPL.txt and important notices to the license
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# from the author is found in LICENSE.txt distributed with these scripts.
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#
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# This script is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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################################################################
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package main;
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use strict;
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use warnings;
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sub CommandBackup($$);
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sub parseConfig($);
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sub readModpath($$);
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sub createArchiv($$$);
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my @pathname;
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#####################################
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sub
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backup_Initialize($$)
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{
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my %hash = ( Fn => "CommandBackup",
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Hlp => ",create a backup of fhem configuration, state and modpath" );
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$cmds{backup} = \%hash;
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}
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#####################################
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sub
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CommandBackup($$)
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{
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my ($cl, $param) = @_;
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my $byUpdate = ($param && $param eq "startedByUpdate");
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my $modpath = AttrVal("global", "modpath","");
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my $configfile = AttrVal("global", "configfile", "");
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my $statefile = AttrVal("global", "statefile", "");
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my $now = gettimeofday();
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my @t = localtime($now);
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$statefile = ResolveDateWildcards($statefile, @t);
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# prevent duplicate entries in backup list for default config, forum #54826
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$configfile = '' if ($configfile eq 'fhem.cfg' || configDBUsed());
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$statefile = '' if ($statefile eq "./log/fhem.save");
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my $msg;
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my $ret;
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Log 1, "NOTE: make sure you have a database backup!" if(configDBUsed());
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# set backupdir
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my $backupdir;
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if (!defined($attr{global}{backupdir})) {
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$backupdir = "$modpath/backup";
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} else {
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if ($attr{global}{backupdir} =~ m/^\/.*/) {
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$backupdir = $attr{global}{backupdir};
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} elsif ($attr{global}{backupdir} =~ m/^\.+\/.*/) {
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$backupdir = "$modpath/$attr{global}{backupdir}";
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} else {
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$backupdir = "$modpath/$attr{global}{backupdir}";
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}
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}
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# create backupdir if not exists
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if (!-d $backupdir) {
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Log 4, "backup create backupdir: '$backupdir'";
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$ret = `(mkdir -p $backupdir) 2>&1`;
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if ($ret) {
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chomp $ret;
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$msg = "backup: $ret";
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return $msg;
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}
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}
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if(configDBUsed()) {
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# add configDB configuration file
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push @pathname, 'configDB.conf';
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Log 4, "backup include: 'configDB.conf'";
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} else {
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# get pathnames to archiv
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push @pathname, $configfile if($configfile);
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Log 4, "backup include: '$configfile'";
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$ret = parseConfig($configfile);
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push @pathname, $statefile if($statefile);
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Log 4, "backup include: '$statefile'";
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}
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$ret = readModpath($modpath,$backupdir);
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# create archiv
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$ret = createArchiv($backupdir, $cl, $byUpdate);
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@pathname = [];
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undef @pathname;
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return $ret;
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}
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sub
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parseConfig($)
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{
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my $configfile = shift;
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# we need default value to read included files
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$configfile = $configfile ? $configfile : 'fhem.cfg';
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my $fh;
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my $msg;
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my $ret;
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if (!open($fh,$configfile)) {
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$msg = "Can't open $configfile: $!";
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Log 1, "backup $msg";
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return $msg;
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}
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while (my $l = <$fh>) {
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$l =~ s/[\r\n]//g;
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if ($l =~ m/^\s*include\s+(\S+)\s*.*$/) {
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if (-e $1) {
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push @pathname, $1;
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Log 4, "backup include: '$1'";
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$ret = parseConfig($1);
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} else {
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Log 1, "backup configfile: '$1' does not exists! File not included."
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}
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}
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}
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close $fh;
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return $ret;
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}
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sub
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readModpath($$)
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{
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my ($modpath,$backupdir) = @_;
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my $msg;
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my $ret;
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if (!opendir(DH, $modpath)) {
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$msg = "Can't open $modpath: $!";
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Log 1, "backup $msg";
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return $msg;
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}
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my @files = <$modpath/*>;
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foreach my $file (@files) {
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if ($file eq $backupdir && (-d $file || -l $file)) {
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Log 4, "backup exclude: '$file'";
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} else {
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Log 4, "backup include: '$file'";
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push @pathname, $file;
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}
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}
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return $ret;
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}
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sub
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createArchiv($$$)
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{
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my ($backupdir,$cl,$byUpdate) = @_;
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my $backupcmd = (!defined($attr{global}{backupcmd}) ? undef : $attr{global}{backupcmd});
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my $symlink = (!defined($attr{global}{backupsymlink}) ? "no" : $attr{global}{backupsymlink});
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my $tarOpts;
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my $msg;
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my $ret;
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my $dateTime = TimeNow();
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$dateTime =~ s/ /_/g;
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$dateTime =~ s/(:|-)//g;
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my $pathlist = join( "\" \"", @pathname );
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my $cmd="";
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if (!defined($backupcmd)) {
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if (lc($symlink) eq "no") {
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$tarOpts = "cf";
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} else {
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$tarOpts = "chf";
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}
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# prevents tar's output of "Removing leading /" and return total bytes of
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# archive
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$cmd = "tar -$tarOpts - \"$pathlist\" |gzip > $backupdir/FHEM-$dateTime.tar.gz";
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} else {
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$cmd = "$backupcmd \"$pathlist\"";
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}
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Log 2, "Backup with command: $cmd";
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if(!$fhemForked && !$byUpdate) {
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use Blocking;
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our $BC_telnetDevice;
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BC_searchTelnet("backup");
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my $tp = $defs{$BC_telnetDevice}{PORT};
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system("($cmd; echo Backup done;".
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"$^X $0 localhost:$tp 'trigger global backup done')2>&1 &");
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return "Started the backup in the background, watch the log for details";
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}
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$ret = `($cmd) 2>&1`;
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if($ret) {
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chomp $ret;
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Log 1, "backup $ret";
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}
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if (!defined($backupcmd) && -e "$backupdir/FHEM-$dateTime.tar.gz") {
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my $size = -s "$backupdir/FHEM-$dateTime.tar.gz";
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$msg = "backup done: FHEM-$dateTime.tar.gz ($size Bytes)";
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DoTrigger("global", $msg);
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Log 1, $msg;
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$ret .= "\n".$msg;
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}
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return $ret;
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}
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1;
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=pod
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=item command
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=item summary create a backup of the FHEM installation
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=item summary_DE erzeugt eine Sicherungsdatei der FHEM Installation
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=begin html
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<a name="backup"></a>
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<h3>backup</h3>
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<ul>
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<code>backup</code><br>
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<br>
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The complete FHEM directory (containing the modules), the WebInterface
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pgm2 (if installed) and the config-file will be saved into a .tar.gz
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file by default. The file is stored with a timestamp in the
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<a href="#modpath">modpath</a>/backup directory or to a directory
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specified by the global attribute <a href="#backupdir">backupdir</a>.<br>
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Note: tar and gzip must be installed to use this feature.
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<br>
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<br>
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If you need to call tar with support for symlinks, you could set the
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global attribute <a href="#backupsymlink">backupsymlink</a> to everything
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else as "no".
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<br>
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<br>
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You could pass the backup to your own command / script by using the
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global attribute <a href="#backupcmd">backupcmd</a>.
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<br>
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<br>
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</ul>
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=end html
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=cut
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