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dpavlin |
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#============================================================= -*-perl-*- |
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# |
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# BackupPC::Xfer::Smb package |
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# |
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# DESCRIPTION |
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# |
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# This library defines a BackupPC::Xfer::Smb class for managing |
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# the SMB (smbclient) transport of backup data from the client. |
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# |
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# AUTHOR |
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# Craig Barratt <cbarratt@users.sourceforge.net> |
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# |
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# COPYRIGHT |
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# Copyright (C) 2001-2003 Craig Barratt |
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# |
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# This program is 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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# This program 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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# You should have received a copy of the GNU General Public License |
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# along with this program; if not, write to the Free Software |
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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# |
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#======================================================================== |
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# |
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# Version 2.1.0, released 20 Jun 2004. |
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# |
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# See http://backuppc.sourceforge.net. |
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# |
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#======================================================================== |
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package BackupPC::Xfer::Smb; |
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use strict; |
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sub new |
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{ |
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my($class, $bpc, $args) = @_; |
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$args ||= {}; |
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my $t = bless { |
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bpc => $bpc, |
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conf => { $bpc->Conf }, |
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host => "", |
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hostIP => "", |
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shareName => "", |
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pipeRH => undef, |
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pipeWH => undef, |
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badFiles => [], |
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%$args, |
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}, $class; |
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return $t; |
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} |
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sub args |
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{ |
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my($t, $args) = @_; |
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foreach my $arg ( keys(%$args) ) { |
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$t->{$arg} = $args->{$arg}; |
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} |
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} |
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sub useTar |
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{ |
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return 1; |
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} |
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sub start |
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{ |
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my($t) = @_; |
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my $bpc = $t->{bpc}; |
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my $conf = $t->{conf}; |
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my $I_option = $t->{hostIP} eq $t->{host} ? [] : ['-I', $t->{hostIP}]; |
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my(@fileList, $X_option, $smbClientCmd, $logMsg); |
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my($timeStampFile); |
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local(*SMB); |
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# |
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# First propagate the PASSWD setting |
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# |
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$ENV{PASSWD} = $ENV{BPC_SMB_PASSWD} if ( defined($ENV{BPC_SMB_PASSWD}) ); |
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$ENV{PASSWD} = $conf->{SmbSharePasswd} |
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if ( defined($conf->{SmbSharePasswd}) ); |
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if ( !defined($ENV{PASSWD}) ) { |
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$t->{_errStr} = "passwd not set for smbclient"; |
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return; |
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} |
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if ( !defined($conf->{SmbClientPath}) || !-x $conf->{SmbClientPath} ) { |
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$t->{_errStr} = '$Conf{SmbClientPath} is not a valid executable'; |
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return; |
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} |
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if ( $t->{type} eq "restore" ) { |
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$smbClientCmd = $conf->{SmbClientRestoreCmd}; |
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$logMsg = "restore started for share $t->{shareName}"; |
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} else { |
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# |
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# Turn $conf->{BackupFilesOnly} and $conf->{BackupFilesExclude} |
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# into a hash of arrays of files, and $conf->{SmbShareName} |
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# to an array |
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# |
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$bpc->backupFileConfFix($conf, "SmbShareName"); |
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$t->{fileIncludeHash} = {}; |
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if ( defined($conf->{BackupFilesOnly}{$t->{shareName}}) ) { |
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foreach my $file ( @{$conf->{BackupFilesOnly}{$t->{shareName}}} ) { |
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push(@fileList, $file); |
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$t->{fileIncludeHash}{$file} = 1; |
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} |
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} elsif ( defined($conf->{BackupFilesExclude}{$t->{shareName}}) ) { |
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foreach my $file ( @{$conf->{BackupFilesExclude}{$t->{shareName}}} ) |
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{ |
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push(@fileList, $file); |
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} |
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# |
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# Allow simple wildcards in exclude list by specifying "r" option. |
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# |
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$X_option = "rX"; |
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} |
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if ( $t->{type} eq "full" ) { |
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$smbClientCmd = $conf->{SmbClientFullCmd}; |
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$logMsg = "full backup started for share $t->{shareName}"; |
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} else { |
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$timeStampFile = "$t->{outDir}/timeStamp.level0"; |
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open(LEV0, ">", $timeStampFile) && close(LEV0); |
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utime($t->{lastFull} - 3600, $t->{lastFull} - 3600, $timeStampFile); |
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$smbClientCmd = $conf->{SmbClientIncrCmd}; |
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$logMsg = "incr backup started back to " |
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. $bpc->timeStamp($t->{lastFull} - 3600, 0) |
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. "for share $t->{shareName}"; |
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} |
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} |
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my $args = { |
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smbClientPath => $conf->{SmbClientPath}, |
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host => $t->{host}, |
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hostIP => $t->{hostIP}, |
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client => $t->{client}, |
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shareName => $t->{shareName}, |
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userName => $conf->{SmbShareUserName}, |
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fileList => \@fileList, |
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I_option => $I_option, |
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X_option => $X_option, |
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timeStampFile => $timeStampFile, |
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}; |
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$smbClientCmd = $bpc->cmdVarSubstitute($smbClientCmd, $args); |
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if ( !defined($t->{xferPid} = open(SMB, "-|")) ) { |
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$t->{_errStr} = "Can't fork to run smbclient"; |
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return; |
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} |
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$t->{pipeSMB} = *SMB; |
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if ( !$t->{xferPid} ) { |
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# |
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# This is the smbclient child. |
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# |
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setpgrp 0,0; |
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if ( $t->{type} eq "restore" ) { |
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# |
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# For restores close the write end of the pipe, |
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# clone STDIN from RH, and STDERR to STDOUT |
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# |
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close($t->{pipeWH}); |
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close(STDERR); |
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open(STDERR, ">&STDOUT"); |
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close(STDIN); |
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open(STDIN, "<&$t->{pipeRH}"); |
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} else { |
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# |
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# For backups close the read end of the pipe, |
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# clone STDOUT to WH, STDERR to STDOUT |
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# |
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close($t->{pipeRH}); |
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close(STDERR); |
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open(STDERR, ">&STDOUT"); |
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open(STDOUT, ">&$t->{pipeWH}"); |
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} |
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# |
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# Run smbclient. |
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# |
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alarm(0); |
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$bpc->cmdExecOrEval($smbClientCmd, $args); |
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# should not be reached, but just in case... |
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$t->{_errStr} = "Can't exec $conf->{SmbClientPath}"; |
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return; |
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} |
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my $str = "Running: " . $bpc->execCmd2ShellCmd(@$smbClientCmd) . "\n"; |
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$t->{XferLOG}->write(\$str); |
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alarm($conf->{ClientTimeout}); |
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$t->{_errStr} = undef; |
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return $logMsg; |
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} |
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sub readOutput |
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{ |
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my($t, $FDreadRef, $rout) = @_; |
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my $conf = $t->{conf}; |
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if ( vec($rout, fileno($t->{pipeSMB}), 1) ) { |
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my $mesg; |
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if ( sysread($t->{pipeSMB}, $mesg, 8192) <= 0 ) { |
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vec($$FDreadRef, fileno($t->{pipeSMB}), 1) = 0; |
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close($t->{pipeSMB}); |
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} else { |
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$t->{smbOut} .= $mesg; |
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} |
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} |
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while ( $t->{smbOut} =~ /(.*?)[\n\r]+(.*)/s ) { |
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$_ = $1; |
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$t->{smbOut} = $2; |
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# |
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# ignore the log file time stamps from smbclient introduced |
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# in version 3.0.0 - don't even write them to the log file. |
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# |
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if ( m{^\[\d+/\d+/\d+ +\d+:\d+:\d+.*\] +(client/cli|lib/util_unistr).*\(\d+\)} ) { |
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$t->{XferLOG}->write(\"$_\n") if ( $t->{logLevel} >= 5 ); |
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next; |
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} |
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# |
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# refresh our inactivity alarm |
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# |
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alarm($conf->{ClientTimeout}) if ( !$t->{abort} ); |
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$t->{lastOutputLine} = $_ if ( !/^$/ ); |
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# |
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# This section is highly dependent on the version of smbclient. |
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# If you upgrade Samba, make sure that these regexp are still valid. |
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# |
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if ( /^\s*(-?\d+) \(\s*\d+[.,]\d kb\/s\) (.*)$/ ) { |
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my $sambaFileSize = $1; |
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my $pcFileName = $2; |
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(my $fileName = $pcFileName) =~ s/\\/\//g; |
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$sambaFileSize += 1024 * 1024 * 4096 if ( $sambaFileSize < 0 ); |
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$fileName =~ s/^\/*//; |
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$t->{byteCnt} += $sambaFileSize; |
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$t->{fileCnt}++; |
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$t->{XferLOG}->write(\"$_\n") if ( $t->{logLevel} >= 2 ); |
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} elsif ( /restore tar file (.*) of size (\d+) bytes/ ) { |
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$t->{byteCnt} += $2; |
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$t->{fileCnt}++; |
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$t->{XferLOG}->write(\"$_\n") if ( $t->{logLevel} >= 1 ); |
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} elsif ( /^\s*tar: dumped \d+ files/ ) { |
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$t->{xferOK} = 1; |
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$t->{XferLOG}->write(\"$_\n") if ( $t->{logLevel} >= 0 ); |
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} elsif ( /^\s*tar: restored \d+ files/ ) { |
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$t->{xferOK} = 1; |
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$t->{XferLOG}->write(\"$_\n") if ( $t->{logLevel} >= 0 ); |
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} elsif ( /^\s*read_socket_with_timeout: timeout read. /i ) { |
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$t->{hostAbort} = 1; |
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$t->{XferLOG}->write(\"$_\n") if ( $t->{logLevel} >= 0 ); |
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} elsif ( /^code 0 listing / |
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|| /^\s*code 0 opening / |
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|| /^\s*abandoning restore/i |
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|| /^\s*Error: Looping in FIND_NEXT/i |
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|| /^\s*SUCCESS - 0/i |
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|| /^\s*Call timed out: server did not respond/i |
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|| /^\s*tree connect failed: ERRDOS - ERRnoaccess \(Access denied\.\)/ |
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|| /^\s*tree connect failed: NT_STATUS_BAD_NETWORK_NAME/ |
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) { |
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if ( $t->{hostError} eq "" ) { |
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$t->{XferLOG}->write(\"This backup will fail because: $_\n"); |
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$t->{hostError} = $_; |
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} |
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$t->{XferLOG}->write(\"$_\n") if ( $t->{logLevel} >= 0 ); |
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} elsif ( /^\s*NT_STATUS_ACCESS_DENIED listing (.*)/ |
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|| /^\s*ERRDOS - ERRnoaccess \(Access denied\.\) listing (.*)/ ) { |
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my $badDir = $1; |
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$badDir =~ s{\\}{/}g; |
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$badDir =~ s{/+}{/}g; |
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$badDir =~ s{/\*$}{}; |
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if ( $t->{hostError} eq "" |
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&& ($badDir eq "" || $t->{fileIncludeHash}{$badDir}) ) { |
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$t->{XferLOG}->write(\"This backup will fail because: $_\n"); |
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$t->{hostError} ||= $_; |
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} |
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$t->{XferLOG}->write(\"$_\n") if ( $t->{logLevel} >= 0 ); |
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} elsif ( /^\s*directory \\/i ) { |
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$t->{XferLOG}->write(\"$_\n") if ( $t->{logLevel} >= 2 ); |
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} elsif ( /smb: \\>/ |
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|| /^\s*added interface/i |
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|| /^\s*tarmode is now/i |
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|| /^\s*Total bytes written/i |
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|| /^\s*Domain=/i |
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|| /^\([\d\.]* kb\/s\) \(average [\d\.]* kb\/s\)$/i |
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|| /^\s*Getting files newer than/i |
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|| /^\s*restore directory \\/i |
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|| /^\s*Output is \/dev\/null/i |
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|| /^\s*Timezone is/i |
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|| /^\s*tar_re_search set/i |
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|| /^\s*creating lame (up|low)case table/i |
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) { |
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# ignore these messages |
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$t->{XferLOG}->write(\"$_\n") if ( $t->{logLevel} >= 1 ); |
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} else { |
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$t->{xferErrCnt}++; |
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$t->{xferBadShareCnt}++ if ( /^ERRDOS - ERRbadshare/ ); |
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$t->{xferBadFileCnt}++ if ( /^ERRDOS - ERRbadfile/ ); |
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if ( $t->{xferErrCnt} > 50000 ) { |
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$t->logMsg( |
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"Too many smbtar errors ($t->{xferErrCnt})... giving up"); |
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$t->{hostError} = "Too many smbtar errors ($t->{xferErrCnt})"; |
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return; |
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} |
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if ( /^Error reading file (.*)\. Got 0 bytes/ ) { |
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# |
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# This happens when a Windoze application has |
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# locked the file. This is a particular problem |
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# with MS-Outlook. smbclient has already written |
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# the tar header to stdout, so all it can do is to |
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# write a dummy file with the correct size, but all |
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# zeros. BackupPC_tarExtract stores these |
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# zero-content files efficiently as a sparse file, |
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# or if compression is on the file will be small |
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# anyhow. After the dump is done we simply delete |
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# the file (it is no use) and try to link it to same |
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# file in any recent backup. |
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# |
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my $badFile = $1; |
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$badFile =~ s{\\}{/}g; |
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$badFile =~ s{^/}{}; |
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push(@{$t->{badFiles}}, { |
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share => $t->{shareName}, |
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file => $badFile |
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}); |
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} |
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$t->{XferLOG}->write(\"$_\n") if ( $t->{logLevel} >= 1 ); |
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} |
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} |
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return 1; |
| 335 |
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} |
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sub abort |
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{ |
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my($t, $reason) = @_; |
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$t->{abort} = 1; |
| 342 |
|
|
$t->{abortReason} = $reason; |
| 343 |
|
|
} |
| 344 |
|
|
|
| 345 |
|
|
sub setSelectMask |
| 346 |
|
|
{ |
| 347 |
|
|
my($t, $FDreadRef) = @_; |
| 348 |
|
|
|
| 349 |
|
|
vec($$FDreadRef, fileno($t->{pipeSMB}), 1) = 1; |
| 350 |
|
|
} |
| 351 |
|
|
|
| 352 |
|
|
sub errStr |
| 353 |
|
|
{ |
| 354 |
|
|
my($t) = @_; |
| 355 |
|
|
|
| 356 |
|
|
return $t->{_errStr}; |
| 357 |
|
|
} |
| 358 |
|
|
|
| 359 |
|
|
sub xferPid |
| 360 |
|
|
{ |
| 361 |
|
|
my($t) = @_; |
| 362 |
|
|
|
| 363 |
|
|
return ($t->{xferPid}); |
| 364 |
|
|
} |
| 365 |
|
|
|
| 366 |
|
|
sub logMsg |
| 367 |
|
|
{ |
| 368 |
|
|
my($t, $msg) = @_; |
| 369 |
|
|
|
| 370 |
|
|
push(@{$t->{_logMsg}}, $msg); |
| 371 |
|
|
} |
| 372 |
|
|
|
| 373 |
|
|
sub logMsgGet |
| 374 |
|
|
{ |
| 375 |
|
|
my($t) = @_; |
| 376 |
|
|
|
| 377 |
|
|
return shift(@{$t->{_logMsg}}); |
| 378 |
|
|
} |
| 379 |
|
|
|
| 380 |
|
|
# |
| 381 |
|
|
# Returns a hash ref giving various status information about |
| 382 |
|
|
# the transfer. |
| 383 |
|
|
# |
| 384 |
|
|
sub getStats |
| 385 |
|
|
{ |
| 386 |
|
|
my($t) = @_; |
| 387 |
|
|
|
| 388 |
|
|
return { map { $_ => $t->{$_} } |
| 389 |
|
|
qw(byteCnt fileCnt xferErrCnt xferBadShareCnt xferBadFileCnt |
| 390 |
|
|
xferOK hostAbort hostError lastOutputLine) |
| 391 |
|
|
}; |
| 392 |
|
|
} |
| 393 |
|
|
|
| 394 |
|
|
sub getBadFiles |
| 395 |
|
|
{ |
| 396 |
|
|
my($t) = @_; |
| 397 |
|
|
|
| 398 |
|
|
return @{$t->{badFiles}}; |
| 399 |
|
|
} |
| 400 |
|
|
|
| 401 |
|
|
1; |
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