1 #============================================================= -*-perl-*-
3 # BackupPC::Xfer::Smb package
7 # This library defines a BackupPC::Xfer::Smb class for managing
8 # the SMB (smbclient) transport of backup data from the client.
11 # Craig Barratt <cbarratt@users.sourceforge.net>
14 # Copyright (C) 2001-2003 Craig Barratt
16 # This program is free software; you can redistribute it and/or modify
17 # it under the terms of the GNU General Public License as published by
18 # the Free Software Foundation; either version 2 of the License, or
19 # (at your option) any later version.
21 # This program is distributed in the hope that it will be useful,
22 # but WITHOUT ANY WARRANTY; without even the implied warranty of
23 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 # GNU General Public License for more details.
26 # You should have received a copy of the GNU General Public License
27 # along with this program; if not, write to the Free Software
28 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
30 #========================================================================
32 # Version 3.0.0alpha, released 23 Jan 2006.
34 # See http://backuppc.sourceforge.net.
36 #========================================================================
38 package BackupPC::Xfer::Smb;
44 my($class, $bpc, $args) = @_;
49 conf => { $bpc->Conf },
66 foreach my $arg ( keys(%$args) ) {
67 $t->{$arg} = $args->{$arg};
80 my $conf = $t->{conf};
81 my $I_option = $t->{hostIP} eq $t->{host} ? [] : ['-I', $t->{hostIP}];
82 my(@fileList, $X_option, $smbClientCmd, $logMsg);
87 # First propagate the PASSWD setting
89 $ENV{PASSWD} = $ENV{BPC_SMB_PASSWD} if ( defined($ENV{BPC_SMB_PASSWD}) );
90 $ENV{PASSWD} = $conf->{SmbSharePasswd}
91 if ( defined($conf->{SmbSharePasswd}) );
92 if ( !defined($ENV{PASSWD}) ) {
93 $t->{_errStr} = "passwd not set for smbclient";
96 if ( !defined($conf->{SmbClientPath}) || !-x $conf->{SmbClientPath} ) {
97 $t->{_errStr} = '$Conf{SmbClientPath} is not a valid executable';
100 if ( $t->{type} eq "restore" ) {
101 $smbClientCmd = $conf->{SmbClientRestoreCmd};
102 $logMsg = "restore started for share $t->{shareName}";
105 # Turn $conf->{BackupFilesOnly} and $conf->{BackupFilesExclude}
106 # into a hash of arrays of files, and $conf->{SmbShareName}
109 $bpc->backupFileConfFix($conf, "SmbShareName");
111 $t->{fileIncludeHash} = {};
112 if ( defined($conf->{BackupFilesOnly}{$t->{shareName}}) ) {
113 foreach my $file ( @{$conf->{BackupFilesOnly}{$t->{shareName}}} ) {
114 push(@fileList, $file);
115 $t->{fileIncludeHash}{$file} = 1;
117 } elsif ( defined($conf->{BackupFilesExclude}{$t->{shareName}}) ) {
118 foreach my $file ( @{$conf->{BackupFilesExclude}{$t->{shareName}}} )
120 push(@fileList, $file);
123 # Allow simple wildcards in exclude list by specifying "r" option.
127 if ( $t->{type} eq "full" ) {
128 $smbClientCmd = $conf->{SmbClientFullCmd};
129 $logMsg = "full backup started for share $t->{shareName}";
131 $timeStampFile = "$t->{outDir}/timeStamp.level0";
132 open(LEV0, ">", $timeStampFile) && close(LEV0);
133 utime($t->{incrBaseTime} - 3600, $t->{incrBaseTime} - 3600,
135 $smbClientCmd = $conf->{SmbClientIncrCmd};
136 $logMsg = "incr backup started back to "
137 . $bpc->timeStamp($t->{incrBaseTime} - 3600, 0)
138 . " (backup #$t->{incrBaseBkupNum}) for share"
139 . " $t->{shareName}";
143 smbClientPath => $conf->{SmbClientPath},
145 hostIP => $t->{hostIP},
146 client => $t->{client},
147 shareName => $t->{shareName},
148 userName => $conf->{SmbShareUserName},
149 fileList => \@fileList,
150 I_option => $I_option,
151 X_option => $X_option,
152 timeStampFile => $timeStampFile,
154 $smbClientCmd = $bpc->cmdVarSubstitute($smbClientCmd, $args);
156 if ( !defined($t->{xferPid} = open(SMB, "-|")) ) {
157 $t->{_errStr} = "Can't fork to run smbclient";
160 $t->{pipeSMB} = *SMB;
161 if ( !$t->{xferPid} ) {
163 # This is the smbclient child.
166 if ( $t->{type} eq "restore" ) {
168 # For restores close the write end of the pipe,
169 # clone STDIN from RH, and STDERR to STDOUT
173 open(STDERR, ">&STDOUT");
175 open(STDIN, "<&$t->{pipeRH}");
178 # For backups close the read end of the pipe,
179 # clone STDOUT to WH, STDERR to STDOUT
183 open(STDERR, ">&STDOUT");
184 open(STDOUT, ">&$t->{pipeWH}");
190 $bpc->cmdExecOrEval($smbClientCmd, $args);
191 # should not be reached, but just in case...
192 $t->{_errStr} = "Can't exec $conf->{SmbClientPath}";
195 my $str = "Running: " . $bpc->execCmd2ShellCmd(@$smbClientCmd) . "\n";
196 $t->{XferLOG}->write(\$str);
197 alarm($conf->{ClientTimeout});
198 $t->{_errStr} = undef;
204 my($t, $FDreadRef, $rout) = @_;
205 my $conf = $t->{conf};
207 if ( vec($rout, fileno($t->{pipeSMB}), 1) ) {
209 if ( sysread($t->{pipeSMB}, $mesg, 8192) <= 0 ) {
210 vec($$FDreadRef, fileno($t->{pipeSMB}), 1) = 0;
211 close($t->{pipeSMB});
213 $t->{smbOut} .= $mesg;
216 while ( $t->{smbOut} =~ /(.*?)[\n\r]+(.*)/s ) {
220 # ignore the log file time stamps from smbclient introduced
221 # in version 3.0.0 - don't even write them to the log file.
223 if ( m{^\[\d+/\d+/\d+ +\d+:\d+:\d+.*\] +(client/cli|lib/util_unistr).*\(\d+\)} ) {
224 $t->{XferLOG}->write(\"$_\n") if ( $t->{logLevel} >= 5 );
228 # refresh our inactivity alarm
230 alarm($conf->{ClientTimeout}) if ( !$t->{abort} );
231 $t->{lastOutputLine} = $_ if ( !/^$/ );
233 # This section is highly dependent on the version of smbclient.
234 # If you upgrade Samba, make sure that these regexp are still valid.
236 if ( /^\s*(-?\d+) \(\s*\d+[.,]\d kb\/s\) (.*)$/ ) {
237 my $sambaFileSize = $1;
239 (my $fileName = $pcFileName) =~ s/\\/\//g;
240 $sambaFileSize += 1024 * 1024 * 4096 if ( $sambaFileSize < 0 );
241 $fileName =~ s/^\/*//;
242 $t->{byteCnt} += $sambaFileSize;
244 $t->{XferLOG}->write(\"$_\n") if ( $t->{logLevel} >= 2 );
245 } elsif ( /restore tar file (.*) of size (\d+) bytes/ ) {
248 $t->{XferLOG}->write(\"$_\n") if ( $t->{logLevel} >= 1 );
249 } elsif ( /^\s*tar: dumped \d+ files/ ) {
251 $t->{XferLOG}->write(\"$_\n") if ( $t->{logLevel} >= 0 );
252 } elsif ( /^\s*tar: restored \d+ files/ ) {
254 $t->{XferLOG}->write(\"$_\n") if ( $t->{logLevel} >= 0 );
255 } elsif ( /^\s*read_socket_with_timeout: timeout read. /i ) {
257 $t->{XferLOG}->write(\"$_\n") if ( $t->{logLevel} >= 0 );
258 } elsif ( /^code 0 listing /
259 || /^\s*code 0 opening /
260 || /^\s*abandoning restore/i
261 || /^\s*Error: Looping in FIND_NEXT/i
262 || /^\s*SUCCESS - 0/i
263 || /^\s*Call timed out: server did not respond/i
264 || /^\s*tree connect failed: ERRDOS - ERRnoaccess \(Access denied\.\)/
265 || /^\s*tree connect failed: NT_STATUS_BAD_NETWORK_NAME/
266 || /^\s*NT_STATUS_INSUFF_SERVER_RESOURCES listing /
268 if ( $t->{hostError} eq "" ) {
269 $t->{XferLOG}->write(\"This backup will fail because: $_\n");
270 $t->{hostError} = $_;
272 $t->{XferLOG}->write(\"$_\n") if ( $t->{logLevel} >= 0 );
273 } elsif ( /^\s*NT_STATUS_ACCESS_DENIED listing (.*)/
274 || /^\s*ERRDOS - ERRnoaccess \(Access denied\.\) listing (.*)/ ) {
276 $badDir =~ s{\\}{/}g;
277 $badDir =~ s{/+}{/}g;
278 $badDir =~ s{/\*$}{};
279 if ( $t->{hostError} eq ""
280 && ($badDir eq "" || $t->{fileIncludeHash}{$badDir}) ) {
281 $t->{XferLOG}->write(\"This backup will fail because: $_\n");
282 $t->{hostError} ||= $_;
284 $t->{XferLOG}->write(\"$_\n") if ( $t->{logLevel} >= 0 );
285 } elsif ( /^\s*directory \\/i ) {
286 $t->{XferLOG}->write(\"$_\n") if ( $t->{logLevel} >= 2 );
288 || /^\s*added interface/i
289 || /^\s*tarmode is now/i
290 || /^\s*Total bytes written/i
292 || /^\([\d\.]* kb\/s\) \(average [\d\.]* kb\/s\)$/i
293 || /^\s*Getting files newer than/i
294 || /^\s*restore directory \\/i
295 || /^\s*Output is \/dev\/null/i
296 || /^\s*Timezone is/i
297 || /^\s*tar_re_search set/i
298 || /^\s*creating lame (up|low)case table/i
300 # ignore these messages
301 $t->{XferLOG}->write(\"$_\n") if ( $t->{logLevel} >= 1 );
304 $t->{xferBadShareCnt}++ if ( /^ERRDOS - ERRbadshare/ );
305 $t->{xferBadFileCnt}++ if ( /^ERRDOS - ERRbadfile/ );
306 if ( $t->{xferErrCnt} > 50000 ) {
308 "Too many smbtar errors ($t->{xferErrCnt})... giving up");
309 $t->{hostError} = "Too many smbtar errors ($t->{xferErrCnt})";
312 if ( /^Error reading file (.*)\. Got 0 bytes/ ) {
314 # This happens when a Windoze application has
315 # locked the file. This is a particular problem
316 # with MS-Outlook. smbclient has already written
317 # the tar header to stdout, so all it can do is to
318 # write a dummy file with the correct size, but all
319 # zeros. BackupPC_tarExtract stores these
320 # zero-content files efficiently as a sparse file,
321 # or if compression is on the file will be small
322 # anyhow. After the dump is done we simply delete
323 # the file (it is no use) and try to link it to same
324 # file in any recent backup.
327 $badFile =~ s{\\}{/}g;
329 push(@{$t->{badFiles}}, {
330 share => $t->{shareName},
334 $t->{XferLOG}->write(\"$_\n") if ( $t->{logLevel} >= 1 );
342 my($t, $reason) = @_;
345 $t->{abortReason} = $reason;
350 my($t, $FDreadRef) = @_;
352 vec($$FDreadRef, fileno($t->{pipeSMB}), 1) = 1;
359 return $t->{_errStr};
366 return ($t->{xferPid});
373 push(@{$t->{_logMsg}}, $msg);
380 return shift(@{$t->{_logMsg}});
384 # Returns a hash ref giving various status information about
391 return { map { $_ => $t->{$_} }
392 qw(byteCnt fileCnt xferErrCnt xferBadShareCnt xferBadFileCnt
393 xferOK hostAbort hostError lastOutputLine)
401 return @{$t->{badFiles}};