| 1 |
#!/bin/perl |
| 2 |
#============================================================= -*-perl-*- |
| 3 |
# |
| 4 |
# BackupPC_archive: Archive files for an archive client. |
| 5 |
# |
| 6 |
# DESCRIPTION |
| 7 |
# |
| 8 |
# Usage: BackupPC_archive <user> <archiveclient> <reqFileName> |
| 9 |
# |
| 10 |
# AUTHOR |
| 11 |
# Josh Marshall |
| 12 |
# |
| 13 |
# COPYRIGHT |
| 14 |
# Copyright (C) 2001-2004 Craig Barratt |
| 15 |
# |
| 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. |
| 20 |
# |
| 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. |
| 25 |
# |
| 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 |
| 29 |
# |
| 30 |
#======================================================================== |
| 31 |
# |
| 32 |
# Version 2.1.0, released 20 Jun 2004. |
| 33 |
# |
| 34 |
# See http://backuppc.sourceforge.net. |
| 35 |
# |
| 36 |
#======================================================================== |
| 37 |
|
| 38 |
use strict; |
| 39 |
no utf8; |
| 40 |
use lib "__INSTALLDIR__/lib"; |
| 41 |
use BackupPC::Lib; |
| 42 |
use BackupPC::FileZIO; |
| 43 |
use BackupPC::Xfer::Archive; |
| 44 |
|
| 45 |
use vars qw( %ArchiveReq ); |
| 46 |
|
| 47 |
########################################################################### |
| 48 |
# Initialize |
| 49 |
########################################################################### |
| 50 |
|
| 51 |
die("BackupPC::Lib->new failed\n") if ( !(my $bpc = BackupPC::Lib->new) ); |
| 52 |
my $TopDir = $bpc->TopDir(); |
| 53 |
my $BinDir = $bpc->BinDir(); |
| 54 |
my %Conf = $bpc->Conf(); |
| 55 |
my $NeedPostCmd; |
| 56 |
|
| 57 |
my($user, $host, $client, $reqFileName, %stat); |
| 58 |
|
| 59 |
$bpc->ChildInit(); |
| 60 |
|
| 61 |
if ( @ARGV != 3 ) { |
| 62 |
print("usage: $0 <user> <archiveclient> <reqFileName>\n"); |
| 63 |
exit(1); |
| 64 |
} |
| 65 |
$user = $1 if ( $ARGV[0] =~ /(.+)/ ); |
| 66 |
$client = $1 if ( $ARGV[1] =~ /(.+)/ ); |
| 67 |
if ( $ARGV[2] !~ /^([\w.]+)$/ ) { |
| 68 |
print("$0: bad reqFileName (arg #3): $ARGV[2]\n"); |
| 69 |
exit(1); |
| 70 |
} |
| 71 |
$reqFileName = $1; |
| 72 |
|
| 73 |
my $startTime = time(); |
| 74 |
|
| 75 |
my $Dir = "$TopDir/pc/$client"; |
| 76 |
my @xferPid = (); |
| 77 |
|
| 78 |
# |
| 79 |
# Catch various signals |
| 80 |
# |
| 81 |
$SIG{INT} = \&catch_signal; |
| 82 |
$SIG{ALRM} = \&catch_signal; |
| 83 |
$SIG{TERM} = \&catch_signal; |
| 84 |
$SIG{PIPE} = \&catch_signal; |
| 85 |
$SIG{STOP} = \&catch_signal; |
| 86 |
$SIG{TSTP} = \&catch_signal; |
| 87 |
$SIG{TTIN} = \&catch_signal; |
| 88 |
my $Pid = $$; |
| 89 |
|
| 90 |
mkpath($Dir, 0, 0777) if ( !-d $Dir ); |
| 91 |
if ( !-f "$Dir/LOCK" ) { |
| 92 |
open(LOCK, ">", "$Dir/LOCK") && close(LOCK); |
| 93 |
} |
| 94 |
open(LOG, ">>", "$Dir/LOG"); |
| 95 |
select(LOG); $| = 1; select(STDOUT); |
| 96 |
|
| 97 |
|
| 98 |
# |
| 99 |
# Read the request file |
| 100 |
# |
| 101 |
|
| 102 |
if ( !(my $ret = do "$Dir/$reqFileName") ) { |
| 103 |
my $err; |
| 104 |
if ( $@ ) { |
| 105 |
$err = "couldn't parse $Dir/$reqFileName: $@"; |
| 106 |
} elsif ( !defined($ret) ) { |
| 107 |
$err = "couldn't do $Dir/$reqFileName: $!"; |
| 108 |
} else { |
| 109 |
$err = "couldn't run $Dir/$reqFileName"; |
| 110 |
} |
| 111 |
$stat{hostError} = $err; |
| 112 |
exit(ArchiveCleanup($client)); |
| 113 |
} |
| 114 |
|
| 115 |
# |
| 116 |
# Re-read config file, so we can include the PC-specific config |
| 117 |
# |
| 118 |
if ( defined(my $error = $bpc->ConfigRead($client)) ) { |
| 119 |
$stat{hostError} = "Can't read PC's config file: $error"; |
| 120 |
exit(ArchiveCleanup($client)); |
| 121 |
} |
| 122 |
%Conf = $bpc->Conf(); |
| 123 |
|
| 124 |
# |
| 125 |
# Make sure we eventually timeout if there is no activity from |
| 126 |
# the data transport program. |
| 127 |
# |
| 128 |
alarm($Conf{ClientTimeout}); |
| 129 |
|
| 130 |
# |
| 131 |
# See if the host name is aliased |
| 132 |
# |
| 133 |
if ( $Conf{ClientNameAlias} ne "" ) { |
| 134 |
$host = $Conf{ClientNameAlias}; |
| 135 |
} else { |
| 136 |
$host = $client; |
| 137 |
} |
| 138 |
|
| 139 |
# |
| 140 |
# Setup file extension for compression and open ArchiveLOG output file |
| 141 |
# |
| 142 |
$Conf{CompressLevel} = 0 if ( !BackupPC::FileZIO->compOk ); |
| 143 |
my $fileExt = $Conf{CompressLevel} > 0 ? ".z" : ""; |
| 144 |
my $ArchiveLOG = BackupPC::FileZIO->open("$Dir/ArchiveLOG$fileExt", 1, |
| 145 |
$Conf{CompressLevel}); |
| 146 |
my($logMsg, $xfer); |
| 147 |
|
| 148 |
$stat{xferOK} = 1; |
| 149 |
$stat{hostAbort} = undef; |
| 150 |
$stat{hostError} = $stat{lastOutputLine} = undef; |
| 151 |
local(*RH, *WH); |
| 152 |
|
| 153 |
# |
| 154 |
# Run an optional pre-archive command |
| 155 |
# |
| 156 |
UserCommandRun("ArchivePreUserCmd"); |
| 157 |
$NeedPostCmd = 1; |
| 158 |
|
| 159 |
$xfer = BackupPC::Xfer::Archive->new($bpc); |
| 160 |
|
| 161 |
# |
| 162 |
# Run the transport program |
| 163 |
# |
| 164 |
|
| 165 |
my $xferArgs = { |
| 166 |
client => $client, |
| 167 |
host => $host, |
| 168 |
user => $ArchiveReq{user}, |
| 169 |
type => "archive", |
| 170 |
XferLOG => $ArchiveLOG, |
| 171 |
XferMethod => $Conf{XferMethod}, |
| 172 |
pathHdrSrc => $ArchiveReq{pathHdrSrc}, |
| 173 |
pathHdrDest => $ArchiveReq{pathHdrDest}, |
| 174 |
HostList => \@{$ArchiveReq{HostList}}, |
| 175 |
BackupList => \@{$ArchiveReq{BackupList}}, |
| 176 |
archiveloc => $ArchiveReq{archiveloc}, |
| 177 |
parfile => $ArchiveReq{parfile}, |
| 178 |
compression => $ArchiveReq{compression}, |
| 179 |
compext => $ArchiveReq{compext}, |
| 180 |
splitsize => $ArchiveReq{splitsize}, |
| 181 |
pidHandler => \&pidHandler, |
| 182 |
}; |
| 183 |
|
| 184 |
$xfer->args($xferArgs); |
| 185 |
|
| 186 |
if ( !defined($logMsg = $xfer->start()) ) { |
| 187 |
UserCommandRun("ArchivePostUserCmd") if ( $NeedPostCmd ); |
| 188 |
$stat{hostError} = "xfer start failed: ", $xfer->errStr; |
| 189 |
exit(ArchiveCleanup($client)); |
| 190 |
} |
| 191 |
|
| 192 |
print(LOG $bpc->timeStamp, "Starting archive\n"); |
| 193 |
print("started_archive\n"); |
| 194 |
$xfer->run(); |
| 195 |
$stat{xferOK} = 0 if ( defined($stat{hostError} = $xfer->errStr) ); |
| 196 |
alarm(0); |
| 197 |
|
| 198 |
exit(ArchiveCleanup($client)); |
| 199 |
|
| 200 |
########################################################################### |
| 201 |
# Subroutines |
| 202 |
########################################################################### |
| 203 |
|
| 204 |
sub catch_signal |
| 205 |
{ |
| 206 |
my $signame = shift; |
| 207 |
|
| 208 |
# |
| 209 |
# Children quit quietly on ALRM |
| 210 |
# |
| 211 |
exit(1) if ( $Pid != $$ && $signame eq "ALRM" ); |
| 212 |
|
| 213 |
# |
| 214 |
# Ignore signals in children |
| 215 |
# |
| 216 |
return if ( $Pid != $$ ); |
| 217 |
|
| 218 |
# |
| 219 |
# Note: needs to be tested for each kind of XferMethod |
| 220 |
# |
| 221 |
print(LOG $bpc->timeStamp, "cleaning up after signal $signame\n"); |
| 222 |
$SIG{$signame} = 'IGNORE'; |
| 223 |
$ArchiveLOG->write(\"exiting after signal $signame\n"); |
| 224 |
$stat{xferOK} = 0; |
| 225 |
if ( $signame eq "INT" ) { |
| 226 |
$stat{hostError} = "aborted by user (signal=$signame)"; |
| 227 |
} else { |
| 228 |
$stat{hostError} = "aborted by signal=$signame"; |
| 229 |
} |
| 230 |
exit(ArchiveCleanup($client)); |
| 231 |
} |
| 232 |
|
| 233 |
# |
| 234 |
# Cleanup and update the archive status |
| 235 |
# |
| 236 |
sub ArchiveCleanup |
| 237 |
{ |
| 238 |
my($client) = @_; |
| 239 |
|
| 240 |
$stat{xferOK} = 0 if ( $stat{hostError} || $stat{hostAbort} ); |
| 241 |
|
| 242 |
if ( !$stat{xferOK} ) { |
| 243 |
# |
| 244 |
# Kill off the tranfer program, first nicely then forcefully. |
| 245 |
# We use negative PIDs to make sure all processes in each |
| 246 |
# group get the signal. |
| 247 |
# |
| 248 |
if ( @xferPid ) { |
| 249 |
foreach my $pid ( @xferPid ) { |
| 250 |
kill($bpc->sigName2num("INT"), -$pid); |
| 251 |
} |
| 252 |
sleep(1); |
| 253 |
foreach my $pid ( @xferPid ) { |
| 254 |
kill($bpc->sigName2num("KILL"), -$pid); |
| 255 |
} |
| 256 |
} |
| 257 |
} |
| 258 |
|
| 259 |
my $lastNum = -1; |
| 260 |
my @Archives; |
| 261 |
|
| 262 |
@Archives = $bpc->ArchiveInfoRead($client); |
| 263 |
for ( my $i = 0 ; $i < @Archives ; $i++ ) { |
| 264 |
$lastNum = $Archives[$i]{num} if ( $lastNum < $Archives[$i]{num} ); |
| 265 |
} |
| 266 |
$lastNum++; |
| 267 |
|
| 268 |
# |
| 269 |
# Run an optional post-archive command |
| 270 |
# |
| 271 |
UserCommandRun("ArchivePostUserCmd") if ( $NeedPostCmd ); |
| 272 |
|
| 273 |
rename("$Dir/ArchiveLOG$fileExt", "$Dir/ArchiveLOG.$lastNum$fileExt"); |
| 274 |
rename("$Dir/$reqFileName", "$Dir/ArchiveInfo.$lastNum"); |
| 275 |
my $endTime = time(); |
| 276 |
|
| 277 |
# |
| 278 |
# If the archive failed, clean up |
| 279 |
# |
| 280 |
if ( !$stat{xferOK} ) { |
| 281 |
$stat{hostError} = $stat{lastOutputLine} if ( $stat{hostError} eq "" ); |
| 282 |
$stat{hostAbort} = 1; |
| 283 |
$ArchiveLOG->write(\"Archive failed: $stat{hostError}") |
| 284 |
if ( defined($ArchiveLOG) ); |
| 285 |
} |
| 286 |
|
| 287 |
$ArchiveLOG->close() if ( defined($ArchiveLOG) ); |
| 288 |
|
| 289 |
# |
| 290 |
# Add the new archive information to the archive file |
| 291 |
# |
| 292 |
@Archives = $bpc->ArchiveInfoRead($client); |
| 293 |
my $i = @Archives; |
| 294 |
$Archives[$i]{num} = $lastNum; |
| 295 |
$Archives[$i]{startTime} = $startTime; |
| 296 |
$Archives[$i]{endTime} = $endTime; |
| 297 |
$Archives[$i]{result} = $stat{xferOK} ? "ok" : "failed"; |
| 298 |
$Archives[$i]{errorMsg} = $stat{hostError}; |
| 299 |
|
| 300 |
while ( @Archives > $Conf{ArchiveInfoKeepCnt} ) { |
| 301 |
my $num = $Archives[0]{num}; |
| 302 |
unlink("$Dir/ArchiveLOG.$num.z"); |
| 303 |
unlink("$Dir/ArchiveLOG.$num"); |
| 304 |
unlink("$Dir/ArchiveInfo.$num"); |
| 305 |
shift(@Archives); |
| 306 |
} |
| 307 |
$bpc->ArchiveInfoWrite($client, @Archives); |
| 308 |
|
| 309 |
if ( !$stat{xferOK} ) { |
| 310 |
print(LOG $bpc->timeStamp, "Archive failed ($stat{hostError})\n"); |
| 311 |
print("archive failed: $stat{hostError}\n"); |
| 312 |
return 1; |
| 313 |
} else { |
| 314 |
print(LOG $bpc->timeStamp, "Archive Complete\n"); |
| 315 |
print("archive complete\n"); |
| 316 |
return; |
| 317 |
} |
| 318 |
} |
| 319 |
|
| 320 |
# |
| 321 |
# The Xfer method might tell us from time to time about processes |
| 322 |
# it forks. We tell BackupPC about this (for status displays) and |
| 323 |
# keep track of the pids in case we cancel the backup |
| 324 |
# |
| 325 |
sub pidHandler |
| 326 |
{ |
| 327 |
@xferPid = @_; |
| 328 |
@xferPid = grep(/./, @xferPid); |
| 329 |
return if ( !@xferPid ); |
| 330 |
my @pids = @xferPid; |
| 331 |
my $str = join(",", @pids); |
| 332 |
$ArchiveLOG->write(\"Xfer PIDs are now $str\n") if ( defined($ArchiveLOG) ); |
| 333 |
print("xferPids $str\n"); |
| 334 |
} |
| 335 |
|
| 336 |
# |
| 337 |
# Run an optional pre- or post-dump command |
| 338 |
# |
| 339 |
sub UserCommandRun |
| 340 |
{ |
| 341 |
my($cmdType) = @_; |
| 342 |
|
| 343 |
return if ( !defined($Conf{$cmdType}) ); |
| 344 |
my $vars = { |
| 345 |
xfer => $xfer, |
| 346 |
client => $client, |
| 347 |
host => $host, |
| 348 |
user => $user, |
| 349 |
share => $ArchiveReq{shareDest}, |
| 350 |
XferMethod => $Conf{XferMethod}, |
| 351 |
HostList => \@{$ArchiveReq{HostList}}, |
| 352 |
BackupList => \@{$ArchiveReq{BackupList}}, |
| 353 |
archiveloc => $ArchiveReq{archiveloc}, |
| 354 |
parfile => $ArchiveReq{parfile}, |
| 355 |
compression => $ArchiveReq{compression}, |
| 356 |
compext => $ArchiveReq{compext}, |
| 357 |
splitsize => $ArchiveReq{splitsize}, |
| 358 |
sshPath => $Conf{SshPath}, |
| 359 |
LOG => *LOG, |
| 360 |
XferLOG => $ArchiveLOG, |
| 361 |
stat => \%stat, |
| 362 |
xferOK => $stat{xferOK} || 0, |
| 363 |
type => "archive", |
| 364 |
cmdType => $cmdType, |
| 365 |
}; |
| 366 |
my $cmd = $bpc->cmdVarSubstitute($Conf{$cmdType}, $vars); |
| 367 |
$ArchiveLOG->write(\"Executing $cmdType: @$cmd\n"); |
| 368 |
# |
| 369 |
# Run the user's command, dumping the stdout/stderr into the |
| 370 |
# Xfer log file. Also supply the optional $vars and %Conf in |
| 371 |
# case the command is really perl code instead of a shell |
| 372 |
# command. |
| 373 |
# |
| 374 |
$bpc->cmdSystemOrEval($cmd, |
| 375 |
sub { |
| 376 |
$ArchiveLOG->write(\$_[0]); |
| 377 |
}, |
| 378 |
$vars, \%Conf); |
| 379 |
} |
Parent Directory
| 
Revision Log