/[BackupPC]/upstream/2.1.0/bin/BackupPC
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
ViewVC logotype

Contents of /upstream/2.1.0/bin/BackupPC

Parent Directory Parent Directory | Revision Log Revision Log


Revision 1 - (show annotations)
Wed Jun 22 19:12:04 2005 UTC (16 years, 11 months ago) by dpavlin
File size: 68822 byte(s)
import of version 2.1.0

1 #!/bin/perl
2 #============================================================= -*-perl-*-
3 #
4 # BackupPC: Main program for PC backups.
5 #
6 # DESCRIPTION
7 #
8 # BackupPC reads the configuration and status information from
9 # $TopDir/conf. It then runs and manages all the backup activity.
10 #
11 # As specified by $Conf{WakeupSchedule}, BackupPC wakes up periodically
12 # to queue backups on all the PCs. This is a four step process:
13 # 1) For each host and DHCP address backup requests are queued on the
14 # background command queue.
15 # 2) For each PC, BackupPC_dump is forked. Several of these may
16 # be run in parallel, based on the configuration.
17 # 3) For each complete, good, backup, BackupPC_link is forked.
18 # Only one of these tasks runs at a time.
19 # 4) In the background BackupPC_trashClean is run to remove any expired
20 # backups. Once each night, BackupPC_nightly is run to complete some
21 # additional administrative tasks (pool cleaning etc).
22 #
23 # BackupPC also listens for connections on a unix domain socket and
24 # the tcp port $Conf{ServerPort}, which are used by various
25 # sub-programs and the CGI script BackupPC_Admin for status reporting
26 # and user-initiated backup or backup cancel requests.
27 #
28 # AUTHOR
29 # Craig Barratt <cbarratt@users.sourceforge.net>
30 #
31 # COPYRIGHT
32 # Copyright (C) 2001-2003 Craig Barratt
33 #
34 # This program is free software; you can redistribute it and/or modify
35 # it under the terms of the GNU General Public License as published by
36 # the Free Software Foundation; either version 2 of the License, or
37 # (at your option) any later version.
38 #
39 # This program is distributed in the hope that it will be useful,
40 # but WITHOUT ANY WARRANTY; without even the implied warranty of
41 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
42 # GNU General Public License for more details.
43 #
44 # You should have received a copy of the GNU General Public License
45 # along with this program; if not, write to the Free Software
46 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
47 #
48 #========================================================================
49 #
50 # Version 2.1.0, released 20 Jun 2004.
51 #
52 # See http://backuppc.sourceforge.net.
53 #
54 #========================================================================
55
56 use strict;
57 no utf8;
58 use vars qw(%Status %Info $Hosts);
59 use lib "__INSTALLDIR__/lib";
60 use BackupPC::Lib;
61 use BackupPC::FileZIO;
62
63 use File::Path;
64 use Data::Dumper;
65 use Getopt::Std;
66 use Socket;
67 use Carp;
68 use Digest::MD5;
69
70 ###########################################################################
71 # Handle command line options
72 ###########################################################################
73 my %opts;
74 if ( !getopts("d", \%opts) || @ARGV != 0 ) {
75 print("usage: $0 [-d]\n");
76 exit(1);
77 }
78
79 ###########################################################################
80 # Initialize major data structures and variables
81 ###########################################################################
82
83 #
84 # Get an instance of BackupPC::Lib and get some shortcuts.
85 #
86 die("BackupPC::Lib->new failed\n") if ( !(my $bpc = BackupPC::Lib->new) );
87 my $TopDir = $bpc->TopDir();
88 my $BinDir = $bpc->BinDir();
89 my %Conf = $bpc->Conf();
90
91 #
92 # Verify we are running as the correct user
93 #
94 if ( $Conf{BackupPCUserVerify}
95 && $> != (my $uid = (getpwnam($Conf{BackupPCUser}))[2]) ) {
96 die "Wrong user: my userid is $>, instead of $uid ($Conf{BackupPCUser})\n";
97 }
98
99 #
100 # %Status maintain status information about each host.
101 # It is a hash of hashes, whose first index is the host.
102 #
103 %Status = ();
104
105 #
106 # %Info is a hash giving general information about BackupPC status.
107 #
108 %Info = ();
109
110 #
111 # Read old status
112 #
113 if ( -f "$TopDir/log/status.pl" && !(my $ret = do "$TopDir/log/status.pl") ) {
114 die "couldn't parse $TopDir/log/status.pl: $@" if $@;
115 die "couldn't do $TopDir/log/status.pl: $!" unless defined $ret;
116 die "couldn't run $TopDir/log/status.pl";
117 }
118
119 #
120 # %Jobs maintains information about currently running jobs.
121 # It is a hash of hashes, whose first index is the host.
122 #
123 my %Jobs = ();
124
125 #
126 # There are three command queues:
127 # - @UserQueue is a queue of user initiated backup requests.
128 # - @BgQueue is a queue of automatically scheduled backup requests.
129 # - @CmdQueue is a queue of administrative jobs, including tasks
130 # like BackupPC_link, BackupPC_trashClean, and BackupPC_nightly
131 # Each queue is an array of hashes. Each hash stores information
132 # about the command request.
133 #
134 my @UserQueue = ();
135 my @CmdQueue = ();
136 my @BgQueue = ();
137
138 #
139 # To quickly lookup if a given host is on a given queue, we keep
140 # a hash of flags for each queue type.
141 #
142 my(%CmdQueueOn, %UserQueueOn, %BgQueueOn);
143
144 #
145 # One or more clients can connect to the server to get status information
146 # or request/cancel backups etc. The %Clients hash maintains information
147 # about each of these socket connections. The hash key is an incrementing
148 # number stored in $ClientConnCnt. Each entry is a hash that contains
149 # various information about the client connection.
150 #
151 my %Clients = ();
152 my $ClientConnCnt;
153
154 #
155 # Read file descriptor mask used by select(). Every file descriptor
156 # on which we expect to read (or accept) has the corresponding bit
157 # set.
158 #
159 my $FDread = '';
160
161 #
162 # Unix seconds when we next wakeup. A value of zero forces the scheduler
163 # to compute the next wakeup time.
164 #
165 my $NextWakeup = 0;
166
167 #
168 # Name of signal saved by catch_signal
169 #
170 my $SigName = "";
171
172 #
173 # Misc variables
174 #
175 my($RunNightlyWhenIdle, $FirstWakeup, $CmdJob, $ServerInetPort);
176 my($BackupPCNightlyJobs, $BackupPCNightlyLock);
177
178 #
179 # Complete the rest of the initialization
180 #
181 Main_Initialize();
182
183 ###########################################################################
184 # Main loop
185 ###########################################################################
186 while ( 1 )
187 {
188 #
189 # Check if we can/should run BackupPC_nightly
190 #
191 Main_TryToRun_nightly();
192
193 #
194 # Check if we can run a new command from @CmdQueue.
195 #
196 Main_TryToRun_CmdQueue();
197
198 #
199 # Check if we can run a new command from @UserQueue or @BgQueue.
200 #
201 Main_TryToRun_Bg_or_User_Queue();
202
203 #
204 # Do a select() to wait for the next interesting thing to happen
205 # (timeout, signal, someone sends a message, child dies etc).
206 #
207 my $fdRead = Main_Select();
208
209 #
210 # Process a signal if we received one.
211 #
212 if ( $SigName ) {
213 Main_Process_Signal();
214 $fdRead = undef;
215 }
216
217 #
218 # Check if a timeout has occurred.
219 #
220 Main_Check_Timeout();
221
222 #
223 # Check for, and process, any messages (output) from our jobs
224 #
225 Main_Check_Job_Messages($fdRead);
226
227 #
228 # Check for, and process, any output from our clients. Also checks
229 # for new connections to our SERVER_UNIX and SERVER_INET sockets.
230 #
231 Main_Check_Client_Messages($fdRead);
232 }
233
234 ############################################################################
235 # Main_Initialize()
236 #
237 # Main initialization routine. Called once at statup.
238 ############################################################################
239 sub Main_Initialize
240 {
241 umask($Conf{UmaskMode});
242
243 #
244 # Check for another running process, check that PASSWD is set and
245 # verify executables are configured correctly.
246 #
247 if ( $Info{pid} ne "" && kill(0, $Info{pid}) ) {
248 print(STDERR $bpc->timeStamp,
249 "Another BackupPC is running (pid $Info{pid}); quitting...\n");
250 exit(1);
251 }
252 foreach my $progName ( qw(SmbClientPath NmbLookupPath PingPath DfPath
253 SendmailPath SshPath) ) {
254 next if ( $Conf{$progName} eq "" || -x $Conf{$progName} );
255 print(STDERR $bpc->timeStamp,
256 "\$Conf{$progName} = '$Conf{$progName}' is not a"
257 . " valid executable program\n");
258 exit(1);
259 }
260
261 if ( $opts{d} ) {
262 #
263 # daemonize by forking
264 #
265 defined(my $pid = fork) or die "Can't fork: $!";
266 exit if $pid; # parent exits
267 }
268
269 #
270 # Open the LOG file and redirect STDOUT, STDERR etc
271 #
272 LogFileOpen();
273
274 #
275 # Read the hosts file (force a read).
276 #
277 exit(1) if ( !HostsUpdate(1) );
278
279 #
280 # Clean up %ENV for taint checking
281 #
282 delete @ENV{qw(IFS CDPATH ENV BASH_ENV)};
283 $ENV{PATH} = $Conf{MyPath};
284
285 #
286 # Initialize server sockets
287 #
288 ServerSocketInit();
289
290 #
291 # Catch various signals
292 #
293 foreach my $sig ( qw(INT BUS SEGV PIPE TERM ALRM HUP) ) {
294 $SIG{$sig} = \&catch_signal;
295 }
296
297 #
298 # Report that we started, and update %Info.
299 #
300 print(LOG $bpc->timeStamp, "BackupPC started, pid $$\n");
301 $Info{ConfigModTime} = $bpc->ConfigMTime();
302 $Info{pid} = $$;
303 $Info{startTime} = time;
304 $Info{ConfigLTime} = time;
305 $Info{Version} = $bpc->{Version};
306
307 #
308 # Update the status left over form the last time BackupPC ran.
309 # Requeue any pending links.
310 #
311 foreach my $host ( sort(keys(%$Hosts)) ) {
312 if ( $Status{$host}{state} eq "Status_backup_in_progress" ) {
313 #
314 # should we restart it? skip it for now.
315 #
316 $Status{$host}{state} = "Status_idle";
317 } elsif ( $Status{$host}{state} eq "Status_link_pending"
318 || $Status{$host}{state} eq "Status_link_running" ) {
319 QueueLink($host);
320 } else {
321 $Status{$host}{state} = "Status_idle";
322 }
323 $Status{$host}{activeJob} = 0;
324 }
325 foreach my $host ( sort(keys(%Status)) ) {
326 next if ( defined($Hosts->{$host}) );
327 delete($Status{$host});
328 }
329
330 #
331 # Write out our initial status and save our PID
332 #
333 StatusWrite();
334 if ( open(PID, ">", "$TopDir/log/BackupPC.pid") ) {
335 print(PID $$);
336 close(PID);
337 }
338
339 #
340 # For unknown reasons there is a very infrequent error about not
341 # being able to coerce GLOBs inside the XS Data::Dumper. I've
342 # only seen this on a particular platform and perl version.
343 # For now the workaround appears to be use the perl version of
344 # XS Data::Dumper.
345 #
346 $Data::Dumper::Useqq = 1;
347 }
348
349 ############################################################################
350 # Main_TryToRun_nightly()
351 #
352 # Checks to see if we can/should run BackupPC_nightly or
353 # BackupPC_trashClean. If so we push the appropriate command onto
354 # @CmdQueue.
355 ############################################################################
356 sub Main_TryToRun_nightly
357 {
358 #
359 # Check if we should run BackupPC_nightly or BackupPC_trashClean.
360 # BackupPC_nightly is run when the current job queue is empty.
361 # BackupPC_trashClean is run in the background always.
362 #
363 my $trashCleanRunning = defined($Jobs{$bpc->trashJob}) ? 1 : 0;
364 if ( !$trashCleanRunning && !$CmdQueueOn{$bpc->trashJob} ) {
365 #
366 # This should only happen once at startup, but just in case this
367 # code will re-start BackupPC_trashClean if it quits
368 #
369 unshift(@CmdQueue, {
370 host => $bpc->trashJob,
371 user => "BackupPC",
372 reqTime => time,
373 cmd => ["$BinDir/BackupPC_trashClean"],
374 });
375 $CmdQueueOn{$bpc->trashJob} = 1;
376 }
377 if ( keys(%Jobs) == $trashCleanRunning && $RunNightlyWhenIdle == 1 ) {
378
379 #
380 # Queue multiple nightly jobs based on the configuration
381 #
382 $Conf{MaxBackupPCNightlyJobs} = 1
383 if ( $Conf{MaxBackupPCNightlyJobs} <= 0 );
384 $Conf{BackupPCNightlyPeriod} = 1
385 if ( $Conf{BackupPCNightlyPeriod} <= 0 );
386 #
387 # Decide what subset of the 16 top-level directories 0..9a..f
388 # we run BackupPC_nightly on, based on $Conf{BackupPCNightlyPeriod}.
389 # If $Conf{BackupPCNightlyPeriod} == 1 then we run 0..15 every
390 # time. If $Conf{BackupPCNightlyPeriod} == 2 then we run
391 # 0..7 one night and 89a-f the next night. And so on.
392 #
393 # $Info{NightlyPhase} counts which night, from 0 to
394 # $Conf{BackupPCNightlyPeriod} - 1.
395 #
396 my $start = int($Info{NightlyPhase} * 16
397 / $Conf{BackupPCNightlyPeriod});
398 my $end = int(($Info{NightlyPhase} + 1) * 16
399 / $Conf{BackupPCNightlyPeriod});
400 $end = $start + 1 if ( $end <= $start );
401 $Info{NightlyPhase}++;
402 $Info{NightlyPhase} = 0 if ( $end >= 16 );
403
404 #
405 # Zero out the data we expect to get from BackupPC_nightly.
406 # In the future if we want to split BackupPC_nightly over
407 # more than one night we will only zero out the portion
408 # that we are running right now.
409 #
410 for my $p ( qw(pool cpool) ) {
411 for ( my $i = $start ; $i < $end ; $i++ ) {
412 $Info{pool}{$p}[$i]{FileCnt} = 0;
413 $Info{pool}{$p}[$i]{DirCnt} = 0;
414 $Info{pool}{$p}[$i]{Kb} = 0;
415 $Info{pool}{$p}[$i]{Kb2} = 0;
416 $Info{pool}{$p}[$i]{KbRm} = 0;
417 $Info{pool}{$p}[$i]{FileCntRm} = 0;
418 $Info{pool}{$p}[$i]{FileCntRep} = 0;
419 $Info{pool}{$p}[$i]{FileRepMax} = 0;
420 $Info{pool}{$p}[$i]{FileCntRename} = 0;
421 $Info{pool}{$p}[$i]{FileLinkMax} = 0;
422 $Info{pool}{$p}[$i]{Time} = 0;
423 }
424 }
425 print(LOG $bpc->timeStamp,
426 sprintf("Running %d BackupPC_nightly jobs from %d..%d"
427 . " (out of 0..15)\n",
428 $Conf{MaxBackupPCNightlyJobs}, $start, $end - 1));
429
430 #
431 # Now queue the $Conf{MaxBackupPCNightlyJobs} jobs.
432 # The granularity on start and end is now 0..256.
433 #
434 $start *= 16;
435 $end *= 16;
436 my $start0 = $start;
437 for ( my $i = 0 ; $i < $Conf{MaxBackupPCNightlyJobs} ; $i++ ) {
438 #
439 # The first nightly job gets the -m option (does email, log aging).
440 # All jobs get the start and end options from 0..255 telling
441 # them which parts of the pool to traverse.
442 #
443 my $cmd = ["$BinDir/BackupPC_nightly"];
444 push(@$cmd, "-m") if ( $i == 0 );
445 push(@$cmd, $start);
446 $start = $start0 + int(($end - $start0)
447 * ($i + 1) / $Conf{MaxBackupPCNightlyJobs});
448 push(@$cmd, $start - 1);
449
450 my $job = $bpc->adminJob($i);
451 unshift(@CmdQueue, {
452 host => $job,
453 user => "BackupPC",
454 reqTime => time,
455 cmd => $cmd,
456 });
457 $CmdQueueOn{$job} = 1;
458 }
459 $RunNightlyWhenIdle = 2;
460
461 }
462 }
463
464 ############################################################################
465 # Main_TryToRun_CmdQueue()
466 #
467 # Decide if we can run a new command from the @CmdQueue.
468 # We only run one of these at a time. The @CmdQueue is
469 # used to run BackupPC_link (for the corresponding host),
470 # BackupPC_trashClean, and BackupPC_nightly using a fake
471 # host name of $bpc->adminJob.
472 ############################################################################
473 sub Main_TryToRun_CmdQueue
474 {
475 my($req, $host);
476
477 while ( $CmdJob eq "" && @CmdQueue > 0 && $RunNightlyWhenIdle != 1
478 || @CmdQueue > 0 && $RunNightlyWhenIdle == 2
479 && $bpc->isAdminJob($CmdQueue[0]->{host})
480 ) {
481 local(*FH);
482 $req = pop(@CmdQueue);
483
484 $host = $req->{host};
485 if ( defined($Jobs{$host}) ) {
486 print(LOG $bpc->timeStamp,
487 "Botch on admin job for $host: already in use!!\n");
488 #
489 # This could happen during normal opertion: a user could
490 # request a backup while a BackupPC_link is queued from
491 # a previous backup. But it is unlikely. Just put this
492 # request back on the end of the queue.
493 #
494 unshift(@CmdQueue, $req);
495 return;
496 }
497 $CmdQueueOn{$host} = 0;
498 my $cmd = $req->{cmd};
499 my $pid = open(FH, "-|");
500 if ( !defined($pid) ) {
501 print(LOG $bpc->timeStamp,
502 "can't fork for $host, request by $req->{user}\n");
503 close(FH);
504 next;
505 }
506 if ( !$pid ) {
507 setpgrp 0,0;
508 exec(@$cmd);
509 print(LOG $bpc->timeStamp, "can't exec @$cmd for $host\n");
510 exit(0);
511 }
512 $Jobs{$host}{pid} = $pid;
513 $Jobs{$host}{fh} = *FH;
514 $Jobs{$host}{fn} = fileno(FH);
515 vec($FDread, $Jobs{$host}{fn}, 1) = 1;
516 $Jobs{$host}{startTime} = time;
517 $Jobs{$host}{reqTime} = $req->{reqTime};
518 $cmd = $bpc->execCmd2ShellCmd(@$cmd);
519 $Jobs{$host}{cmd} = $cmd;
520 $Jobs{$host}{user} = $req->{user};
521 $Jobs{$host}{type} = $Status{$host}{type};
522 $Status{$host}{state} = "Status_link_running";
523 $Status{$host}{activeJob} = 1;
524 $Status{$host}{endTime} = time;
525 $CmdJob = $host if ( $host ne $bpc->trashJob );
526 $cmd =~ s/$BinDir\///g;
527 print(LOG $bpc->timeStamp, "Running $cmd (pid=$pid)\n");
528 if ( $cmd =~ /^BackupPC_nightly\s/ ) {
529 $BackupPCNightlyJobs++;
530 $BackupPCNightlyLock++;
531 }
532 }
533 }
534
535 ############################################################################
536 # Main_TryToRun_Bg_or_User_Queue()
537 #
538 # Decide if we can run any new backup requests from @BgQueue
539 # or @UserQueue. Several of these can be run at the same time
540 # based on %Conf settings. Jobs from @UserQueue take priority,
541 # and at total of $Conf{MaxBackups} + $Conf{MaxUserBackups}
542 # simultaneous jobs can run from @UserQueue. After @UserQueue
543 # is exhausted, up to $Conf{MaxBackups} simultaneous jobs can
544 # run from @BgQueue.
545 ############################################################################
546 sub Main_TryToRun_Bg_or_User_Queue
547 {
548 my($req, $host);
549 while ( $RunNightlyWhenIdle == 0 ) {
550 local(*FH);
551 my(@args, @deferUserQueue, @deferBgQueue, $progName, $type);
552 my $nJobs = keys(%Jobs);
553 #
554 # CmdJob and trashClean don't count towards MaxBackups / MaxUserBackups
555 #
556 $nJobs -= $BackupPCNightlyJobs if ( $CmdJob ne "" );
557 $nJobs-- if ( defined($Jobs{$bpc->trashJob} ) );
558 if ( $nJobs < $Conf{MaxBackups} + $Conf{MaxUserBackups}
559 && @UserQueue > 0 ) {
560 $req = pop(@UserQueue);
561 if ( defined($Jobs{$req->{host}}) ) {
562 push(@deferUserQueue, $req);
563 next;
564 }
565 push(@args, $req->{doFull} ? "-f" : "-i")
566 if (( !$req->{restore} ) && ( !$req->{archive} ));
567 $UserQueueOn{$req->{host}} = 0;
568 } elsif ( $nJobs < $Conf{MaxBackups}
569 && (@CmdQueue + $nJobs)
570 <= $Conf{MaxBackups} + $Conf{MaxPendingCmds}
571 && @BgQueue > 0 ) {
572 my $du;
573 if ( time - $Info{DUlastValueTime} >= 60 ) {
574 #
575 # Update our notion of disk usage no more than
576 # once every minute
577 #
578 $du = $bpc->CheckFileSystemUsage($TopDir);
579 $Info{DUlastValue} = $du;
580 $Info{DUlastValueTime} = time;
581 } else {
582 #
583 # if we recently checked it then just use the old value
584 #
585 $du = $Info{DUlastValue};
586 }
587 if ( $Info{DUDailyMaxReset} ) {
588 $Info{DUDailyMaxStartTime} = time;
589 $Info{DUDailyMaxReset} = 0;
590 $Info{DUDailyMax} = 0;
591 }
592 if ( $du > $Info{DUDailyMax} ) {
593 $Info{DUDailyMax} = $du;
594 $Info{DUDailyMaxTime} = time;
595 }
596 if ( $du > $Conf{DfMaxUsagePct} ) {
597 my $nSkip = @BgQueue + @deferBgQueue;
598 print(LOG $bpc->timeStamp,
599 "Disk too full ($du%); skipping $nSkip hosts\n");
600 $Info{DUDailySkipHostCnt} += $nSkip;
601 @BgQueue = ();
602 @deferBgQueue = ();
603 %BgQueueOn = ();
604 next;
605 }
606 $req = pop(@BgQueue);
607 if ( defined($Jobs{$req->{host}}) ) {
608 push(@deferBgQueue, $req);
609 next;
610 }
611 $BgQueueOn{$req->{host}} = 0;
612 } else {
613 while ( @deferBgQueue ) {
614 push(@BgQueue, pop(@deferBgQueue));
615 }
616 while ( @deferUserQueue ) {
617 push(@UserQueue, pop(@deferUserQueue));
618 }
619 last;
620 }
621 $host = $req->{host};
622 my $user = $req->{user};
623 if ( $req->{restore} ) {
624 $progName = "BackupPC_restore";
625 $type = "restore";
626 push(@args, $req->{hostIP}, $req->{host}, $req->{reqFileName});
627 } elsif ( $req->{archive} ) {
628 $progName = "BackupPC_archive";
629 $type = "archive";
630 push(@args, $req->{user}, $req->{host}, $req->{reqFileName});
631 } else {
632 $progName = "BackupPC_dump";
633 $type = "backup";
634 push(@args, "-d") if ( $req->{dhcp} );
635 push(@args, "-e") if ( $req->{dumpExpire} );
636 push(@args, $host);
637 }
638 my $pid = open(FH, "-|");
639 if ( !defined($pid) ) {
640 print(LOG $bpc->timeStamp,
641 "can't fork to run $progName for $host, request by $user\n");
642 close(FH);
643 next;
644 }
645 if ( !$pid ) {
646 setpgrp 0,0;
647 exec("$BinDir/$progName", @args);
648 print(LOG $bpc->timeStamp, "can't exec $progName for $host\n");
649 exit(0);
650 }
651 $Jobs{$host}{pid} = $pid;
652 $Jobs{$host}{fh} = *FH;
653 $Jobs{$host}{fn} = fileno(FH);
654 $Jobs{$host}{dhcp} = $req->{dhcp};
655 vec($FDread, $Jobs{$host}{fn}, 1) = 1;
656 $Jobs{$host}{startTime} = time;
657 $Jobs{$host}{reqTime} = $req->{reqTime};
658 $Jobs{$host}{userReq} = $req->{userReq};
659 $Jobs{$host}{cmd} = $bpc->execCmd2ShellCmd($progName, @args);
660 $Jobs{$host}{user} = $user;
661 $Jobs{$host}{type} = $type;
662 $Status{$host}{userReq} = $req->{userReq}
663 if ( defined($Hosts->{$host}) );
664 if ( !$req->{dhcp} ) {
665 $Status{$host}{state} = "Status_".$type."_starting";
666 $Status{$host}{activeJob} = 1;
667 $Status{$host}{startTime} = time;
668 $Status{$host}{endTime} = "";
669 }
670 }
671 }
672
673 ############################################################################
674 # Main_Select()
675 #
676 # If necessary, figure out when to next wakeup based on $Conf{WakeupSchedule},
677 # and then do a select() to wait for the next thing to happen
678 # (timeout, signal, someone sends a message, child dies etc).
679 ############################################################################
680 sub Main_Select
681 {
682 if ( $NextWakeup <= 0 ) {
683 #
684 # Figure out when to next wakeup based on $Conf{WakeupSchedule}.
685 #
686 my($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst)
687 = localtime(time);
688 my($currHours) = $hour + $min / 60 + $sec / 3600;
689 if ( $bpc->ConfigMTime() != $Info{ConfigModTime} ) {
690 ServerReload("Re-read config file because mtime changed");
691 }
692 my $delta = -1;
693 foreach my $t ( @{$Conf{WakeupSchedule} || [0..23]} ) {
694 next if ( $t < 0 || $t > 24 );
695 my $tomorrow = $t + 24;
696 if ( $delta < 0
697 || ($tomorrow - $currHours > 0
698 && $delta > $tomorrow - $currHours) ) {
699 $delta = $tomorrow - $currHours;
700 $FirstWakeup = $t == $Conf{WakeupSchedule}[0];
701 }
702 if ( $delta < 0
703 || ($t - $currHours > 0 && $delta > $t - $currHours) ) {
704 $delta = $t - $currHours;
705 $FirstWakeup = $t == $Conf{WakeupSchedule}[0];
706 }
707 }
708 $NextWakeup = time + $delta * 3600;
709 $Info{nextWakeup} = $NextWakeup;
710 print(LOG $bpc->timeStamp, "Next wakeup is ",
711 $bpc->timeStamp($NextWakeup, 1), "\n");
712 }
713 #
714 # Call select(), waiting until either a signal, a timeout,
715 # any output from our jobs, or any messages from clients
716 # connected via tcp.
717 # select() is where we (hopefully) spend most of our time blocked...
718 #
719 my $timeout = $NextWakeup - time;
720 $timeout = 1 if ( $timeout <= 0 );
721 my $ein = $FDread;
722 select(my $rout = $FDread, undef, $ein, $timeout);
723
724 return $rout;
725 }
726
727 ############################################################################
728 # Main_Process_Signal()
729 #
730 # Signal handler.
731 ############################################################################
732 sub Main_Process_Signal
733 {
734 #
735 # Process signals
736 #
737 if ( $SigName eq "HUP" ) {
738 ServerReload("Re-read config file because of a SIG_HUP");
739 } elsif ( $SigName ) {
740 ServerShutdown("Got signal $SigName... cleaning up");
741 }
742 $SigName = "";
743 }
744
745 ############################################################################
746 # Main_Check_Timeout()
747 #
748 # Check if a timeout has occured, and if so, queue all the PCs for backups.
749 # Also does log file aging on the first timeout after midnight.
750 ############################################################################
751 sub Main_Check_Timeout
752 {
753 #
754 # Process timeouts
755 #
756 return if ( time < $NextWakeup || $NextWakeup <= 0 );
757 $NextWakeup = 0;
758 if ( $FirstWakeup ) {
759 #
760 # This is the first wakeup after midnight. Do log file aging
761 # and various house keeping.
762 #
763 $FirstWakeup = 0;
764 printf(LOG "%s24hr disk usage: %d%% max, %d%% recent,"
765 . " %d skipped hosts\n",
766 $bpc->timeStamp, $Info{DUDailyMax}, $Info{DUlastValue},
767 $Info{DUDailySkipHostCnt});
768 $Info{DUDailyMaxReset} = 1;
769 $Info{DUDailyMaxPrev} = $Info{DUDailyMax};
770 $Info{DUDailySkipHostCntPrev} = $Info{DUDailySkipHostCnt};
771 $Info{DUDailySkipHostCnt} = 0;
772 my $lastLog = $Conf{MaxOldLogFiles} - 1;
773 if ( -f "$TopDir/log/LOG.$lastLog" ) {
774 print(LOG $bpc->timeStamp,
775 "Removing $TopDir/log/LOG.$lastLog\n");
776 unlink("$TopDir/log/LOG.$lastLog");
777 }
778 if ( -f "$TopDir/log/LOG.$lastLog.z" ) {
779 print(LOG $bpc->timeStamp,
780 "Removing $TopDir/log/LOG.$lastLog.z\n");
781 unlink("$TopDir/log/LOG.$lastLog.z");
782 }
783 print(LOG $bpc->timeStamp, "Aging LOG files, LOG -> LOG.0 -> "
784 . "LOG.1 -> ... -> LOG.$lastLog\n");
785 close(STDERR); # dup of LOG
786 close(STDOUT); # dup of LOG
787 close(LOG);
788 for ( my $i = $lastLog - 1 ; $i >= 0 ; $i-- ) {
789 my $j = $i + 1;
790 rename("$TopDir/log/LOG.$i", "$TopDir/log/LOG.$j")
791 if ( -f "$TopDir/log/LOG.$i" );
792 rename("$TopDir/log/LOG.$i.z", "$TopDir/log/LOG.$j.z")
793 if ( -f "$TopDir/log/LOG.$i.z" );
794 }
795 #
796 # Compress the log file LOG -> LOG.0.z (if enabled).
797 # Otherwise, just rename LOG -> LOG.0.
798 #
799 BackupPC::FileZIO->compressCopy("$TopDir/log/LOG",
800 "$TopDir/log/LOG.0.z",
801 "$TopDir/log/LOG.0",
802 $Conf{CompressLevel}, 1);
803 LogFileOpen();
804 #
805 # Remember to run nightly script after current jobs are done
806 #
807 $RunNightlyWhenIdle = 1;
808 }
809 #
810 # Write out the current status and then queue all the PCs
811 #
812 HostsUpdate(0);
813 StatusWrite();
814 %BgQueueOn = () if ( @BgQueue == 0 );
815 %UserQueueOn = () if ( @UserQueue == 0 );
816 %CmdQueueOn = () if ( @CmdQueue == 0 );
817 QueueAllPCs();
818 }
819
820 ############################################################################
821 # Main_Check_Job_Messages($fdRead)
822 #
823 # Check if select() says we have bytes waiting from any of our jobs.
824 # Handle each of the messages when complete (newline terminated).
825 ############################################################################
826 sub Main_Check_Job_Messages
827 {
828 my($fdRead) = @_;
829 foreach my $host ( keys(%Jobs) ) {
830 next if ( !vec($fdRead, $Jobs{$host}{fn}, 1) );
831 my $mesg;
832 #
833 # do a last check to make sure there is something to read so
834 # we are absolutely sure we won't block.
835 #
836 vec(my $readMask, $Jobs{$host}{fn}, 1) = 1;
837 if ( !select($readMask, undef, undef, 0.0) ) {
838 print(LOG $bpc->timeStamp, "Botch in Main_Check_Job_Messages:"
839 . " nothing to read from $host. Debug dump:\n");
840 my($dump) = Data::Dumper->new(
841 [ \%Clients, \%Jobs, \$FDread, \$fdRead],
842 [qw(*Clients, *Jobs *FDread, *fdRead)]);
843 $dump->Indent(1);
844 print(LOG $dump->Dump);
845 next;
846 }
847 my $nbytes = sysread($Jobs{$host}{fh}, $mesg, 1024);
848 $Jobs{$host}{mesg} .= $mesg if ( $nbytes > 0 );
849 #
850 # Process any complete lines of output from this jobs.
851 # Any output to STDOUT or STDERR from the children is processed here.
852 #
853 while ( $Jobs{$host}{mesg} =~ /(.*?)[\n\r]+(.*)/s ) {
854 $mesg = $1;
855 $Jobs{$host}{mesg} = $2;
856 if ( $Jobs{$host}{dhcp} ) {
857 if ( $mesg =~ /^DHCP (\S+) (\S+)/ ) {
858 my $newHost = $bpc->uriUnesc($2);
859 if ( defined($Jobs{$newHost}) ) {
860 print(LOG $bpc->timeStamp,
861 "Backup on $newHost is already running\n");
862 kill($bpc->sigName2num("INT"), $Jobs{$host}{pid});
863 $nbytes = 0;
864 last;
865 }
866 $Jobs{$host}{dhcpHostIP} = $host;
867 $Status{$newHost}{dhcpHostIP} = $host;
868 $Jobs{$newHost} = $Jobs{$host};
869 delete($Jobs{$host});
870 $host = $newHost;
871 $Status{$host}{state} = "Status_backup_starting";
872 $Status{$host}{activeJob} = 1;
873 $Status{$host}{startTime} = $Jobs{$host}{startTime};
874 $Status{$host}{endTime} = "";
875 $Jobs{$host}{dhcp} = 0;
876 } else {
877 print(LOG $bpc->timeStamp, "dhcp $host: $mesg\n");
878 }
879 } elsif ( $mesg =~ /^started (.*) dump, share=(.*)/ ) {
880 $Jobs{$host}{type} = $1;
881 $Jobs{$host}{shareName} = $2;
882 print(LOG $bpc->timeStamp,
883 "Started $1 backup on $host (pid=$Jobs{$host}{pid}",
884 $Jobs{$host}{dhcpHostIP}
885 ? ", dhcp=$Jobs{$host}{dhcpHostIP}" : "",
886 ", share=$Jobs{$host}{shareName})\n");
887 $Status{$host}{state} = "Status_backup_in_progress";
888 $Status{$host}{reason} = "";
889 $Status{$host}{type} = $1;
890 $Status{$host}{startTime} = time;
891 $Status{$host}{deadCnt} = 0;
892 $Status{$host}{aliveCnt}++;
893 $Status{$host}{dhcpCheckCnt}--
894 if ( $Status{$host}{dhcpCheckCnt} > 0 );
895 } elsif ( $mesg =~ /^xferPids (.*)/ ) {
896 $Jobs{$host}{xferPid} = $1;
897 } elsif ( $mesg =~ /^started_restore/ ) {
898 $Jobs{$host}{type} = "restore";
899 print(LOG $bpc->timeStamp,
900 "Started restore on $host"
901 . " (pid=$Jobs{$host}{pid})\n");
902 $Status{$host}{state} = "Status_restore_in_progress";
903 $Status{$host}{reason} = "";
904 $Status{$host}{type} = "restore";
905 $Status{$host}{startTime} = time;
906 $Status{$host}{deadCnt} = 0;
907 $Status{$host}{aliveCnt}++;
908 } elsif ( $mesg =~ /^started_archive/ ) {
909 $Jobs{$host}{type} = "archive";
910 print(LOG $bpc->timeStamp,
911 "Started archive on $host"
912 . " (pid=$Jobs{$host}{pid})\n");
913 $Status{$host}{state} = "Status_archive_in_progress";
914 $Status{$host}{reason} = "";
915 $Status{$host}{type} = "archive";
916 $Status{$host}{startTime} = time;
917 $Status{$host}{deadCnt} = 0;
918 $Status{$host}{aliveCnt}++;
919 } elsif ( $mesg =~ /^(full|incr) backup complete/ ) {
920 print(LOG $bpc->timeStamp, "Finished $1 backup on $host\n");
921 $Status{$host}{reason} = "Reason_backup_done";
922 delete($Status{$host}{error});
923 delete($Status{$host}{errorTime});
924 $Status{$host}{endTime} = time;
925 } elsif ( $mesg =~ /^backups disabled/ ) {
926 print(LOG $bpc->timeStamp,
927 "Ignoring old backup error on $host\n");
928 $Status{$host}{reason} = "Reason_backup_done";
929 delete($Status{$host}{error});
930 delete($Status{$host}{errorTime});
931 $Status{$host}{endTime} = time;
932 } elsif ( $mesg =~ /^restore complete/ ) {
933 print(LOG $bpc->timeStamp, "Finished restore on $host\n");
934 $Status{$host}{reason} = "Reason_restore_done";
935 delete($Status{$host}{error});
936 delete($Status{$host}{errorTime});
937 $Status{$host}{endTime} = time;
938 } elsif ( $mesg =~ /^archive complete/ ) {
939 print(LOG $bpc->timeStamp, "Finished archive on $host\n");
940 $Status{$host}{reason} = "Reason_archive_done";
941 delete($Status{$host}{error});
942 delete($Status{$host}{errorTime});
943 $Status{$host}{endTime} = time;
944 } elsif ( $mesg =~ /^nothing to do/ ) {
945 if ( $Status{$host}{reason} ne "Reason_backup_failed"
946 && $Status{$host}{reason} ne "Reason_restore_failed" ) {
947 $Status{$host}{state} = "Status_idle";
948 $Status{$host}{reason} = "Reason_nothing_to_do";
949 $Status{$host}{startTime} = time;
950 }
951 $Status{$host}{dhcpCheckCnt}--
952 if ( $Status{$host}{dhcpCheckCnt} > 0 );
953 } elsif ( $mesg =~ /^no ping response/
954 || $mesg =~ /^ping too slow/
955 || $mesg =~ /^host not found/ ) {
956 $Status{$host}{state} = "Status_idle";
957 if ( $Status{$host}{userReq}
958 || $Status{$host}{reason} ne "Reason_backup_failed"
959 || $Status{$host}{error} =~ /^aborted by user/ ) {
960 $Status{$host}{reason} = "Reason_no_ping";
961 $Status{$host}{error} = $mesg;
962 $Status{$host}{startTime} = time;
963 }
964 $Status{$host}{deadCnt}++;
965 if ( $Status{$host}{deadCnt} >= $Conf{BlackoutBadPingLimit} ) {
966 $Status{$host}{aliveCnt} = 0;
967 }
968 } elsif ( $mesg =~ /^dump failed: (.*)/ ) {
969 $Status{$host}{state} = "Status_idle";
970 $Status{$host}{error} = $1;
971 $Status{$host}{errorTime} = time;
972 $Status{$host}{endTime} = time;
973 if ( $Status{$host}{reason}
974 eq "Reason_backup_canceled_by_user" ) {
975 print(LOG $bpc->timeStamp,
976 "Backup canceled on $host ($1)\n");
977 } else {
978 $Status{$host}{reason} = "Reason_backup_failed";
979 print(LOG $bpc->timeStamp,
980 "Backup failed on $host ($1)\n");
981 }
982 } elsif ( $mesg =~ /^restore failed: (.*)/ ) {
983 $Status{$host}{state} = "Status_idle";
984 $Status{$host}{error} = $1;
985 $Status{$host}{errorTime} = time;
986 $Status{$host}{endTime} = time;
987 if ( $Status{$host}{reason}
988 eq "Reason_restore_canceled_by_user" ) {
989 print(LOG $bpc->timeStamp,
990 "Restore canceled on $host ($1)\n");
991 } else {
992 $Status{$host}{reason} = "Reason_restore_failed";
993 print(LOG $bpc->timeStamp,
994 "Restore failed on $host ($1)\n");
995 }
996 } elsif ( $mesg =~ /^archive failed: (.*)/ ) {
997 $Status{$host}{state} = "Status_idle";
998 $Status{$host}{error} = $1;
999 $Status{$host}{errorTime} = time;
1000 $Status{$host}{endTime} = time;
1001 if ( $Status{$host}{reason}
1002 eq "Reason_archive_canceled_by_user" ) {
1003 print(LOG $bpc->timeStamp,
1004 "Archive canceled on $host ($1)\n");
1005 } else {
1006 $Status{$host}{reason} = "Reason_archive_failed";
1007 print(LOG $bpc->timeStamp,
1008 "Archive failed on $host ($1)\n");
1009 }
1010 } elsif ( $mesg =~ /^log\s+(.*)/ ) {
1011 print(LOG $bpc->timeStamp, "$1\n");
1012 } elsif ( $mesg =~ /^BackupPC_stats (\d+) = (.*)/ ) {
1013 my $chunk = int($1 / 16);
1014 my @f = split(/,/, $2);
1015 $Info{pool}{$f[0]}[$chunk]{FileCnt} += $f[1];
1016 $Info{pool}{$f[0]}[$chunk]{DirCnt} += $f[2];
1017 $Info{pool}{$f[0]}[$chunk]{Kb} += $f[3];
1018 $Info{pool}{$f[0]}[$chunk]{Kb2} += $f[4];
1019 $Info{pool}{$f[0]}[$chunk]{KbRm} += $f[5];
1020 $Info{pool}{$f[0]}[$chunk]{FileCntRm} += $f[6];
1021 $Info{pool}{$f[0]}[$chunk]{FileCntRep} += $f[7];
1022 $Info{pool}{$f[0]}[$chunk]{FileRepMax} = $f[8]
1023 if ( $Info{pool}{$f[0]}[$chunk]{FileRepMax} < $f[8] );
1024 $Info{pool}{$f[0]}[$chunk]{FileCntRename} += $f[9];
1025 $Info{pool}{$f[0]}[$chunk]{FileLinkMax} = $f[10]
1026 if ( $Info{pool}{$f[0]}[$chunk]{FileLinkMax} < $f[10] );
1027 $Info{pool}{$f[0]}[$chunk]{Time} = time;
1028 } elsif ( $mesg =~ /^BackupPC_nightly lock_off/ ) {
1029 $BackupPCNightlyLock--;
1030 if ( $BackupPCNightlyLock == 0 ) {
1031 #
1032 # This means the last BackupPC_nightly is done with
1033 # the pool clean, so it's to start running regular
1034 # backups again.
1035 #
1036 $RunNightlyWhenIdle = 0;
1037 }
1038 } elsif ( $mesg =~ /^processState\s+(.+)/ ) {
1039 $Jobs{$host}{processState} = $1;
1040 } elsif ( $mesg =~ /^link\s+(.+)/ ) {
1041 my($h) = $1;
1042 $Status{$h}{needLink} = 1;
1043 } else {
1044 print(LOG $bpc->timeStamp, "$host: $mesg\n");
1045 }
1046 }
1047 #
1048 # shut down the client connection if we read EOF
1049 #
1050 if ( $nbytes <= 0 ) {
1051 close($Jobs{$host}{fh});
1052 vec($FDread, $Jobs{$host}{fn}, 1) = 0;
1053 if ( $CmdJob eq $host || $bpc->isAdminJob($host) ) {
1054 my $cmd = $Jobs{$host}{cmd};
1055 $cmd =~ s/$BinDir\///g;
1056 print(LOG $bpc->timeStamp, "Finished $host ($cmd)\n");
1057 $Status{$host}{state} = "Status_idle";
1058 $Status{$host}{endTime} = time;
1059 if ( $cmd =~ /^BackupPC_nightly\s/ ) {
1060 $BackupPCNightlyJobs--;
1061 #print(LOG $bpc->timeStamp, "BackupPC_nightly done; now"
1062 # . " have $BackupPCNightlyJobs running\n");
1063 if ( $BackupPCNightlyJobs <= 0 ) {
1064 $BackupPCNightlyJobs = 0;
1065 $RunNightlyWhenIdle = 0;
1066 $CmdJob = "";
1067 #
1068 # Combine the 16 per-directory results
1069 #
1070 for my $p ( qw(pool cpool) ) {
1071 $Info{"${p}FileCnt"} = 0;
1072 $Info{"${p}DirCnt"} = 0;
1073 $Info{"${p}Kb"} = 0;
1074 $Info{"${p}Kb2"} = 0;
1075 $Info{"${p}KbRm"} = 0;
1076 $Info{"${p}FileCntRm"} = 0;
1077 $Info{"${p}FileCntRep"} = 0;
1078 $Info{"${p}FileRepMax"} = 0;
1079 $Info{"${p}FileCntRename"} = 0;
1080 $Info{"${p}FileLinkMax"} = 0;
1081 $Info{"${p}Time"} = 0;
1082 for ( my $i = 0 ; $i < 16 ; $i++ ) {
1083 $Info{"${p}FileCnt"}
1084 += $Info{pool}{$p}[$i]{FileCnt};
1085 $Info{"${p}DirCnt"}
1086 += $Info{pool}{$p}[$i]{DirCnt};
1087 $Info{"${p}Kb"}
1088 += $Info{pool}{$p}[$i]{Kb};
1089 $Info{"${p}Kb2"}
1090 += $Info{pool}{$p}[$i]{Kb2};
1091 $Info{"${p}KbRm"}
1092 += $Info{pool}{$p}[$i]{KbRm};
1093 $Info{"${p}FileCntRm"}
1094 += $Info{pool}{$p}[$i]{FileCntRm};
1095 $Info{"${p}FileCntRep"}
1096 += $Info{pool}{$p}[$i]{FileCntRep};
1097 $Info{"${p}FileRepMax"}
1098 = $Info{pool}{$p}[$i]{FileRepMax}
1099 if ( $Info{"${p}FileRepMax"} <
1100 $Info{pool}{$p}[$i]{FileRepMax} );
1101 $Info{"${p}FileCntRename"}
1102 += $Info{pool}{$p}[$i]{FileCntRename};
1103 $Info{"${p}FileLinkMax"}
1104 = $Info{pool}{$p}[$i]{FileLinkMax}
1105 if ( $Info{"${p}FileLinkMax"} <
1106 $Info{pool}{$p}[$i]{FileLinkMax} );
1107 $Info{"${p}Time"} = $Info{pool}{$p}[$i]{Time}
1108 if ( $Info{"${p}Time"} <
1109 $Info{pool}{$p}[$i]{Time} );
1110 }
1111 printf(LOG "%s%s nightly clean removed %d files of"
1112 . " size %.2fGB\n",
1113 $bpc->timeStamp, ucfirst($p),
1114 $Info{"${p}FileCntRm"},
1115 $Info{"${p}KbRm"} / (1000 * 1024));
1116 printf(LOG "%s%s is %.2fGB, %d files (%d repeated, "
1117 . "%d max chain, %d max links), %d directories\n",
1118 $bpc->timeStamp, ucfirst($p),
1119 $Info{"${p}Kb"} / (1000 * 1024),
1120 $Info{"${p}FileCnt"}, $Info{"${p}FileCntRep"},
1121 $Info{"${p}FileRepMax"},
1122 $Info{"${p}FileLinkMax"}, $Info{"${p}DirCnt"});
1123 }
1124 }
1125 } else {
1126 $CmdJob = "";
1127 }
1128 } else {
1129 #
1130 # Queue BackupPC_link to complete the backup
1131 # processing for this host.
1132 #
1133 if ( defined($Status{$host})
1134 && ($Status{$host}{reason} eq "Reason_backup_done"
1135 || $Status{$host}{needLink}) ) {
1136 QueueLink($host);
1137 } elsif ( defined($Status{$host}) ) {
1138 $Status{$host}{state} = "Status_idle";
1139 }
1140 }
1141 delete($Jobs{$host});
1142 $Status{$host}{activeJob} = 0 if ( defined($Status{$host}) );
1143 }
1144 }
1145 #
1146 # When we are idle (empty Jobs, CmdQueue, BgQueue, UserQueue) we
1147 # do a pass over %Status updating the deadCnt and aliveCnt for
1148 # DHCP hosts. The reason we need to do this later is we can't
1149 # be sure whether a DHCP host is alive or dead until we have passed
1150 # over all the DHCP pool.
1151 #
1152 return if ( @CmdQueue || @BgQueue || @UserQueue || keys(%Jobs) > 1 );
1153 foreach my $host ( keys(%Status) ) {
1154 next if ( $Status{$host}{dhcpCheckCnt} <= 0 );
1155 $Status{$host}{deadCnt} += $Status{$host}{dhcpCheckCnt};
1156 $Status{$host}{dhcpCheckCnt} = 0;
1157 if ( $Status{$host}{deadCnt} >= $Conf{BlackoutBadPingLimit} ) {
1158 $Status{$host}{aliveCnt} = 0;
1159 }
1160 }
1161 }
1162
1163 ############################################################################
1164 # Main_Check_Client_Messages($fdRead)
1165 #
1166 # Check for, and process, any output from our clients. Also checks
1167 # for new connections to our SERVER_UNIX and SERVER_INET sockets.
1168 ############################################################################
1169 sub Main_Check_Client_Messages
1170 {
1171 my($fdRead) = @_;
1172 foreach my $client ( keys(%Clients) ) {
1173 next if ( !vec($fdRead, $Clients{$client}{fn}, 1) );
1174 my($mesg, $host);
1175 #
1176 # do a last check to make sure there is something to read so
1177 # we are absolutely sure we won't block.
1178 #
1179 vec(my $readMask, $Clients{$client}{fn}, 1) = 1;
1180 if ( !select($readMask, undef, undef, 0.0) ) {
1181 print(LOG $bpc->timeStamp, "Botch in Main_Check_Client_Messages:"
1182 . " nothing to read from $client. Debug dump:\n");
1183 my($dump) = Data::Dumper->new(
1184 [ \%Clients, \%Jobs, \$FDread, \$fdRead],
1185 [qw(*Clients, *Jobs *FDread, *fdRead)]);
1186 $dump->Indent(1);
1187 print(LOG $dump->Dump);
1188 next;
1189 }
1190 my $nbytes = sysread($Clients{$client}{fh}, $mesg, 1024);
1191 $Clients{$client}{mesg} .= $mesg if ( $nbytes > 0 );
1192 #
1193 # Process any complete lines received from this client.
1194 #
1195 while ( $Clients{$client}{mesg} =~ /(.*?)[\n\r]+(.*)/s ) {
1196 my($reply);
1197 my $cmd = $1;
1198 $Clients{$client}{mesg} = $2;
1199 #
1200 # Authenticate the message by checking the MD5 digest
1201 #
1202 my $md5 = Digest::MD5->new;
1203 if ( $cmd !~ /^(.{22}) (.*)/
1204 || ($md5->add($Clients{$client}{seed}
1205 . $Clients{$client}{mesgCnt}
1206 . $Conf{ServerMesgSecret} . $2),
1207 $md5->b64digest ne $1) ) {
1208 print(LOG $bpc->timeStamp, "Corrupted message '$cmd' from"
1209 . " client '$Clients{$client}{clientName}':"
1210 . " shutting down client connection\n");
1211 $nbytes = 0;
1212 last;
1213 }
1214 $Clients{$client}{mesgCnt}++;
1215 $cmd = $2;
1216 if ( $cmd =~ /^stop (\S+)\s+(\S+)\s+(\S*)/ ) {
1217 $host = $1;
1218 my $user = $2;
1219 my $backoff = $3;
1220 $host = $bpc->uriUnesc($host);
1221 if ( $CmdJob ne $host && defined($Status{$host})
1222 && defined($Jobs{$host}) ) {
1223 print(LOG $bpc->timeStamp,
1224 "Stopping current $Jobs{$host}{type} of $host,"
1225 . " request by $user (backoff=$backoff)\n");
1226 kill($bpc->sigName2num("INT"), $Jobs{$host}{pid});
1227 #
1228 # Don't close the pipe now; wait until the child
1229 # really exits later. Otherwise close() will
1230 # block until the child has exited.
1231 # old code:
1232 ##vec($FDread, $Jobs{$host}{fn}, 1) = 0;
1233 ##close($Jobs{$host}{fh});
1234 ##delete($Jobs{$host});
1235
1236 $Status{$host}{state} = "Status_idle";
1237 if ( $Jobs{$host}{type} eq "restore" ) {
1238 $Status{$host}{reason}
1239 = "Reason_restore_canceled_by_user";
1240 } elsif ( $Jobs{$host}{type} eq "archive" ) {
1241 $Status{$host}{reason}
1242 = "Reason_archive_canceled_by_user";
1243 } else {
1244 $Status{$host}{reason}
1245 = "Reason_backup_canceled_by_user";
1246 }
1247 $Status{$host}{activeJob} = 0;
1248 $Status{$host}{startTime} = time;
1249 $reply = "ok: $Jobs{$host}{type} of $host canceled";
1250 } elsif ( $BgQueueOn{$host} || $UserQueueOn{$host} ) {
1251 print(LOG $bpc->timeStamp,
1252 "Stopping pending backup of $host,"
1253 . " request by $user (backoff=$backoff)\n");
1254 @BgQueue = grep($_->{host} ne $host, @BgQueue);
1255 @UserQueue = grep($_->{host} ne $host, @UserQueue);
1256 $BgQueueOn{$host} = $UserQueueOn{$host} = 0;
1257 $reply = "ok: pending backup of $host canceled";
1258 } else {
1259 print(LOG $bpc->timeStamp,
1260 "Nothing to do for stop backup of $host,"
1261 . " request by $user (backoff=$backoff)\n");
1262 $reply = "ok: no backup was pending or running";
1263 }
1264 if ( defined($Status{$host}) && $backoff ne "" ) {
1265 if ( $backoff > 0 ) {
1266 $Status{$host}{backoffTime} = time + $backoff * 3600;
1267 } else {
1268 delete($Status{$host}{backoffTime});
1269 }
1270 }
1271 } elsif ( $cmd =~ /^backup all$/ ) {
1272 QueueAllPCs();
1273 } elsif ( $cmd =~ /^BackupPC_nightly run$/ ) {
1274 $RunNightlyWhenIdle = 1;
1275 } elsif ( $cmd =~ /^backup (\S+)\s+(\S+)\s+(\S+)\s+(\S+)/ ) {
1276 my $hostIP = $1;
1277 $host = $2;
1278 my $user = $3;
1279 my $doFull = $4;
1280 $host = $bpc->uriUnesc($host);
1281 $hostIP = $bpc->uriUnesc($hostIP);
1282 if ( !defined($Status{$host}) ) {
1283 print(LOG $bpc->timeStamp,
1284 "User $user requested backup of unknown host"
1285 . " $host\n");
1286 $reply = "error: unknown host $host";
1287 } elsif ( defined($Jobs{$host})
1288 && $Jobs{$host}{type} ne "restore" ) {
1289 print(LOG $bpc->timeStamp,
1290 "User $user requested backup of $host,"
1291 . " but one is currently running\n");
1292 $reply = "error: backup of $host is already running";
1293 } else {
1294 print(LOG $bpc->timeStamp,
1295 "User $user requested backup of $host"
1296 . " ($hostIP)\n");
1297 if ( $BgQueueOn{$hostIP} ) {
1298 @BgQueue = grep($_->{host} ne $hostIP, @BgQueue);
1299 $BgQueueOn{$hostIP} = 0;
1300 }
1301 if ( $UserQueueOn{$hostIP} ) {
1302 @UserQueue = grep($_->{host} ne $hostIP, @UserQueue);
1303 $UserQueueOn{$hostIP} = 0;
1304 }
1305 unshift(@UserQueue, {
1306 host => $hostIP,
1307 user => $user,
1308 reqTime => time,
1309 doFull => $doFull,
1310 userReq => 1,
1311 dhcp => $hostIP eq $host ? 0 : 1,
1312 });
1313 $UserQueueOn{$hostIP} = 1;
1314 $reply = "ok: requested backup of $host";
1315 }
1316 } elsif ( $cmd =~ /^archive (\S+)\s+(\S+)\s+(\S+)/ ) {
1317 my $user = $1;
1318 my $archivehost = $2;
1319 my $reqFileName = $3;
1320 $host = $bpc->uriUnesc($archivehost);
1321 if ( !defined($Status{$host}) ) {
1322 print(LOG $bpc->timeStamp,
1323 "User $user requested archive of unknown archive host"
1324 . " $host");
1325 $reply = "archive error: unknown archive host $host";
1326 } else {
1327 print(LOG $bpc->timeStamp,
1328 "User $user requested archive on $host"
1329 . " ($host)\n");
1330 if ( defined($Jobs{$host}) ) {
1331 $reply = "Archive currently running on $host, please try later";
1332 } else {
1333 unshift(@UserQueue, {
1334 host => $host,
1335 hostIP => $user,
1336 reqFileName => $reqFileName,
1337 reqTime => time,
1338 dhcp => 0,
1339 archive => 1,
1340 userReq => 1,
1341 });
1342 $UserQueueOn{$host} = 1;
1343 $reply = "ok: requested archive on $host";
1344 }
1345 }
1346 } elsif ( $cmd =~ /^restore (\S+)\s+(\S+)\s+(\S+)\s+(\S+)/ ) {
1347 my $hostIP = $1;
1348 $host = $2;
1349 my $user = $3;
1350 my $reqFileName = $4;
1351 $host = $bpc->uriUnesc($host);
1352 $hostIP = $bpc->uriUnesc($hostIP);
1353 if ( !defined($Status{$host}) ) {
1354 print(LOG $bpc->timeStamp,
1355 "User $user requested restore to unknown host"
1356 . " $host");
1357 $reply = "restore error: unknown host $host";
1358 } else {
1359 print(LOG $bpc->timeStamp,
1360 "User $user requested restore to $host"
1361 . " ($hostIP)\n");
1362 unshift(@UserQueue, {
1363 host => $host,
1364 hostIP => $hostIP,
1365 reqFileName => $reqFileName,
1366 reqTime => time,
1367 dhcp => 0,
1368 restore => 1,
1369 userReq => 1,
1370 });
1371 $UserQueueOn{$host} = 1;
1372 if ( defined($Jobs{$host}) ) {
1373 $reply = "ok: requested restore of $host, but a"
1374 . " job is currently running,"
1375 . " so this request will start later";
1376 } else {
1377 $reply = "ok: requested restore of $host";
1378 }
1379 }
1380 } elsif ( $cmd =~ /^status\s*(.*)/ ) {
1381 my($args) = $1;
1382 my($dump, @values, @names);
1383 foreach my $type ( split(/\s+/, $args) ) {
1384 if ( $type =~ /^queues/ ) {
1385 push(@values, \@BgQueue, \@UserQueue, \@CmdQueue);
1386 push(@names, qw(*BgQueue *UserQueue *CmdQueue));
1387 } elsif ( $type =~ /^jobs/ ) {
1388 push(@values, \%Jobs);
1389 push(@names, qw(*Jobs));
1390 } elsif ( $type =~ /^queueLen/ ) {
1391 push(@values, {
1392 BgQueue => scalar(@BgQueue),
1393 UserQueue => scalar(@UserQueue),
1394 CmdQueue => scalar(@CmdQueue),
1395 });
1396 push(@names, qw(*QueueLen));
1397 } elsif ( $type =~ /^info/ ) {
1398 push(@values, \%Info);
1399 push(@names, qw(*Info));
1400 } elsif ( $type =~ /^hosts/ ) {
1401 push(@values, \%Status);
1402 push(@names, qw(*Status));
1403 } elsif ( $type =~ /^host\((.*)\)/ ) {
1404 my $h = $bpc->uriUnesc($1);
1405 if ( defined($Status{$h}) ) {
1406 push(@values, {
1407 %{$Status{$h}},
1408 BgQueueOn => $BgQueueOn{$h},
1409 UserQueueOn => $UserQueueOn{$h},
1410 CmdQueueOn => $CmdQueueOn{$h},
1411 });
1412 push(@names, qw(*StatusHost));
1413 } else {
1414 print(LOG $bpc->timeStamp,
1415 "Unknown host $h for status request\n");
1416 }
1417 } else {
1418 print(LOG $bpc->timeStamp,
1419 "Unknown status request $type\n");
1420 }
1421 }
1422 $dump = Data::Dumper->new(\@values, \@names);
1423 $dump->Indent(0);
1424 $reply = $dump->Dump;
1425 } elsif ( $cmd =~ /^link\s+(.+)/ ) {
1426 my($host) = $1;
1427 $host = $bpc->uriUnesc($host);
1428 QueueLink($host);
1429 } elsif ( $cmd =~ /^log\s+(.*)/ ) {
1430 print(LOG $bpc->timeStamp, "$1\n");
1431 } elsif ( $cmd =~ /^server\s+(\w+)/ ) {
1432 my($type) = $1;
1433 if ( $type eq 'reload' ) {
1434 ServerReload("Reloading config/host files via CGI request");
1435 } elsif ( $type eq 'shutdown' ) {
1436 $reply = "Shutting down...\n";
1437 syswrite($Clients{$client}{fh}, $reply, length($reply));
1438 ServerShutdown("Server shutting down...");
1439 }
1440 } elsif ( $cmd =~ /^quit/ || $cmd =~ /^exit/ ) {
1441 $nbytes = 0;
1442 last;
1443 } else {
1444 print(LOG $bpc->timeStamp, "Unknown command $cmd\n");
1445 $reply = "error: bad command $cmd";
1446 }
1447 #
1448 # send a reply to the client, at a minimum "ok\n".
1449 #
1450 $reply = "ok" if ( $reply eq "" );
1451 $reply .= "\n";
1452 syswrite($Clients{$client}{fh}, $reply, length($reply));
1453 }
1454 #
1455 # Detect possible denial-of-service attack from sending a huge line
1456 # (ie: never terminated). 32K seems to be plenty big enough as
1457 # a limit.
1458 #
1459 if ( length($Clients{$client}{mesg}) > 32 * 1024 ) {
1460 print(LOG $bpc->timeStamp, "Line too long from client"
1461 . " '$Clients{$client}{clientName}':"
1462 . " shutting down client connection\n");
1463 $nbytes = 0;
1464 }
1465 #
1466 # Shut down the client connection if we read EOF
1467 #
1468 if ( $nbytes <= 0 ) {
1469 close($Clients{$client}{fh});
1470 vec($FDread, $Clients{$client}{fn}, 1) = 0;
1471 delete($Clients{$client});
1472 }
1473 }
1474 #
1475 # Accept any new connections on each of our listen sockets
1476 #
1477 if ( vec($fdRead, fileno(SERVER_UNIX), 1) ) {
1478 local(*CLIENT);
1479 my $paddr = accept(CLIENT, SERVER_UNIX);
1480 $ClientConnCnt++;
1481 $Clients{$ClientConnCnt}{clientName} = "unix socket";
1482 $Clients{$ClientConnCnt}{mesg} = "";
1483 $Clients{$ClientConnCnt}{fh} = *CLIENT;
1484 $Clients{$ClientConnCnt}{fn} = fileno(CLIENT);
1485 vec($FDread, $Clients{$ClientConnCnt}{fn}, 1) = 1;
1486 #
1487 # Generate and send unique seed for MD5 digests to avoid
1488 # replay attacks. See BackupPC::Lib::ServerMesg().
1489 #
1490 my $seed = time . ",$ClientConnCnt,$$,0\n";
1491 $Clients{$ClientConnCnt}{seed} = $seed;
1492 $Clients{$ClientConnCnt}{mesgCnt} = 0;
1493 syswrite($Clients{$ClientConnCnt}{fh}, $seed, length($seed));
1494 }
1495 if ( $ServerInetPort > 0 && vec($fdRead, fileno(SERVER_INET), 1) ) {
1496 local(*CLIENT);
1497 my $paddr = accept(CLIENT, SERVER_INET);
1498 my($port,$iaddr) = sockaddr_in($paddr);
1499 my $name = gethostbyaddr($iaddr, AF_INET);
1500 $ClientConnCnt++;
1501 $Clients{$ClientConnCnt}{mesg} = "";
1502 $Clients{$ClientConnCnt}{fh} = *CLIENT;
1503 $Clients{$ClientConnCnt}{fn} = fileno(CLIENT);
1504 $Clients{$ClientConnCnt}{clientName} = "$name:$port";
1505 vec($FDread, $Clients{$ClientConnCnt}{fn}, 1) = 1;
1506 #
1507 # Generate and send unique seed for MD5 digests to avoid
1508 # replay attacks. See BackupPC::Lib::ServerMesg().
1509 #
1510 my $seed = time . ",$ClientConnCnt,$$,$port\n";
1511 $Clients{$ClientConnCnt}{seed} = $seed;
1512 $Clients{$ClientConnCnt}{mesgCnt} = 0;
1513 syswrite($Clients{$ClientConnCnt}{fh}, $seed, length($seed));
1514 }
1515 }
1516
1517 ###########################################################################
1518 # Miscellaneous subroutines
1519 ###########################################################################
1520
1521 #
1522 # Write the current status to $TopDir/log/status.pl
1523 #
1524 sub StatusWrite
1525 {
1526 my($dump) = Data::Dumper->new(
1527 [ \%Info, \%Status],
1528 [qw(*Info *Status)]);
1529 $dump->Indent(1);
1530 if ( open(STATUS, ">", "$TopDir/log/status.pl") ) {
1531 print(STATUS $dump->Dump);
1532 close(STATUS);
1533 }
1534 }
1535
1536 #
1537 # Compare function for host sort. Hosts with errors go first,
1538 # sorted with the oldest errors first. The remaining hosts
1539 # are sorted so that those with the oldest backups go first.
1540 #
1541 sub HostSortCompare
1542 {
1543 return -1 if ( $Status{$a}{error} ne "" && $Status{$b}{error} eq "" );
1544 return 1 if ( $Status{$a}{error} eq "" && $Status{$b}{error} ne "" );
1545 return $Status{$a}{endTime} <=> $Status{$b}{endTime};
1546 }
1547
1548 #
1549 # Queue all the hosts for backup. This means queuing all the fixed
1550 # ip hosts and all the dhcp address ranges. We also additionally
1551 # queue the dhcp hosts with a -e flag to check for expired dumps.
1552 #
1553 sub QueueAllPCs
1554 {
1555 foreach my $host ( sort(HostSortCompare keys(%$Hosts)) ) {
1556 delete($Status{$host}{backoffTime})
1557 if ( defined($Status{$host}{backoffTime})
1558 && $Status{$host}{backoffTime} < time );
1559 next if ( defined($Jobs{$host})
1560 || $BgQueueOn{$host}
1561 || $UserQueueOn{$host}
1562 || $CmdQueueOn{$host} );
1563 if ( $Hosts->{$host}{dhcp} ) {
1564 $Status{$host}{dhcpCheckCnt}++;
1565 if ( $RunNightlyWhenIdle ) {
1566 #
1567 # Once per night queue a check for DHCP hosts that just
1568 # checks for expired dumps. We need to do this to handle
1569 # the case when a DHCP host has not been on the network for
1570 # a long time, and some of the old dumps need to be expired.
1571 # Normally expiry checks are done by BackupPC_dump only
1572 # after the DHCP hosts has been detected on the network.
1573 #
1574 unshift(@BgQueue,
1575 {host => $host, user => "BackupPC", reqTime => time,
1576 dhcp => 0, dumpExpire => 1});
1577 $BgQueueOn{$host} = 1;
1578 }
1579 } else {
1580 #
1581 # this is a fixed ip host: queue it
1582 #
1583 unshift(@BgQueue,
1584 {host => $host, user => "BackupPC", reqTime => time,
1585 dhcp => $Hosts->{$host}{dhcp}});
1586 $BgQueueOn{$host} = 1;
1587 }
1588 }
1589 foreach my $dhcp ( @{$Conf{DHCPAddressRanges}} ) {
1590 for ( my $i = $dhcp->{first} ; $i <= $dhcp->{last} ; $i++ ) {
1591 my $ipAddr = "$dhcp->{ipAddrBase}.$i";
1592 next if ( defined($Jobs{$ipAddr})
1593 || $BgQueueOn{$ipAddr}
1594 || $UserQueueOn{$ipAddr}
1595 || $CmdQueueOn{$ipAddr} );
1596 #
1597 # this is a potential dhcp ip address (we don't know the
1598 # host name yet): queue it
1599 #
1600 unshift(@BgQueue,
1601 {host => $ipAddr, user => "BackupPC", reqTime => time,
1602 dhcp => 1});
1603 $BgQueueOn{$ipAddr} = 1;
1604 }
1605 }
1606 }
1607
1608 #
1609 # Queue a BackupPC_link for the given host
1610 #
1611 sub QueueLink
1612 {
1613 my($host) = @_;
1614
1615 return if ( $CmdQueueOn{$host} );
1616 $Status{$host}{state} = "Status_link_pending";
1617 $Status{$host}{needLink} = 0;
1618 unshift(@CmdQueue, {
1619 host => $host,
1620 user => "BackupPC",
1621 reqTime => time,
1622 cmd => ["$BinDir/BackupPC_link", $host],
1623 });
1624 $CmdQueueOn{$host} = 1;
1625 }
1626
1627 #
1628 # Read the hosts file, and update Status if any hosts have been
1629 # added or deleted. We also track the mtime so the only need to
1630 # update the hosts file on changes.
1631 #
1632 # This function is called at startup, SIGHUP, and on each wakeup.
1633 # It returns 1 on success and undef on failure.
1634 #
1635 sub HostsUpdate
1636 {
1637 my($force) = @_;
1638 my $newHosts;
1639 #
1640 # Nothing to do if we already have the current hosts file
1641 #
1642 return 1 if ( !$force && defined($Hosts)
1643 && $Info{HostsModTime} == $bpc->HostsMTime() );
1644 if ( !defined($newHosts = $bpc->HostInfoRead()) ) {
1645 print(LOG $bpc->timeStamp, "Can't read hosts file!\n");
1646 return;
1647 }
1648 print(LOG $bpc->timeStamp, "Reading hosts file\n");
1649 $Hosts = $newHosts;
1650 $Info{HostsModTime} = $bpc->HostsMTime();
1651 #
1652 # Now update %Status in case any hosts have been added or deleted
1653 #
1654 foreach my $host ( sort(keys(%$Hosts)) ) {
1655 next if ( defined($Status{$host}) );
1656 $Status{$host}{state} = "Status_idle";
1657 print(LOG $bpc->timeStamp, "Added host $host to backup list\n");
1658 }
1659 foreach my $host ( sort(keys(%Status)) ) {
1660 next if ( $host eq $bpc->trashJob
1661 || $bpc->isAdminJob($host)
1662 || defined($Hosts->{$host})
1663 || defined($Jobs{$host})
1664 || $BgQueueOn{$host}
1665 || $UserQueueOn{$host}
1666 || $CmdQueueOn{$host} );
1667 print(LOG $bpc->timeStamp, "Deleted host $host from backup list\n");
1668 delete($Status{$host});
1669 }
1670 return 1;
1671 }
1672
1673 #
1674 # Remember the signal name for later processing
1675 #
1676 sub catch_signal
1677 {
1678 if ( $SigName ) {
1679 $SigName = shift;
1680 foreach my $host ( keys(%Jobs) ) {
1681 kill($bpc->sigName2num("INT"), $Jobs{$host}{pid});
1682 }
1683 #
1684 # In case we are inside the exit handler, reopen the log file
1685 #
1686 close(LOG);
1687 LogFileOpen();
1688 print(LOG "Fatal error: unhandled signal $SigName\n");
1689 unlink("$TopDir/log/BackupPC.pid");
1690 confess("Got new signal $SigName... quitting\n");
1691 } else {
1692 $SigName = shift;
1693 }
1694 }
1695
1696 #
1697 # Open the log file and point STDOUT and STDERR there too
1698 #
1699 sub LogFileOpen
1700 {
1701 mkpath("$TopDir/log", 0, 0777) if ( !-d "$TopDir/log" );
1702 open(LOG, ">>$TopDir/log/LOG")
1703 || die("Can't create LOG file $TopDir/log/LOG");
1704 close(STDOUT);
1705 close(STDERR);
1706 open(STDOUT, ">&LOG");
1707 open(STDERR, ">&LOG");
1708 select(LOG); $| = 1;
1709 select(STDERR); $| = 1;
1710 select(STDOUT); $| = 1;
1711 }
1712
1713 #
1714 # Initialize the unix-domain and internet-domain sockets that
1715 # we listen to for client connections (from the CGI script and
1716 # some of the BackupPC sub-programs).
1717 #
1718 sub ServerSocketInit
1719 {
1720 if ( !defined(fileno(SERVER_UNIX)) ) {
1721 #
1722 # one-time only: initialize unix-domain socket
1723 #
1724 if ( !socket(SERVER_UNIX, PF_UNIX, SOCK_STREAM, 0) ) {
1725 print(LOG $bpc->timeStamp, "unix socket() failed: $!\n");
1726 exit(1);
1727 }
1728 my $sockFile = "$TopDir/log/BackupPC.sock";
1729 unlink($sockFile);
1730 if ( !bind(SERVER_UNIX, sockaddr_un($sockFile)) ) {
1731 print(LOG $bpc->timeStamp, "unix bind() failed: $!\n");
1732 exit(1);
1733 }
1734 if ( !listen(SERVER_UNIX, SOMAXCONN) ) {
1735 print(LOG $bpc->timeStamp, "unix listen() failed: $!\n");
1736 exit(1);
1737 }
1738 vec($FDread, fileno(SERVER_UNIX), 1) = 1;
1739 }
1740 return if ( $ServerInetPort == $Conf{ServerPort} );
1741 if ( $ServerInetPort > 0 ) {
1742 vec($FDread, fileno(SERVER_INET), 1) = 0;
1743 close(SERVER_INET);
1744 $ServerInetPort = -1;
1745 }
1746 if ( $Conf{ServerPort} > 0 ) {
1747 #
1748 # Setup a socket to listen on $Conf{ServerPort}
1749 #
1750 my $proto = getprotobyname('tcp');
1751 if ( !socket(SERVER_INET, PF_INET, SOCK_STREAM, $proto) ) {
1752 print(LOG $bpc->timeStamp, "inet socket() failed: $!\n");
1753 exit(1);
1754 }
1755 if ( !setsockopt(SERVER_INET, SOL_SOCKET, SO_REUSEADDR, pack("l",1)) ) {
1756 print(LOG $bpc->timeStamp, "setsockopt() failed: $!\n");
1757 exit(1);
1758 }
1759 if ( !bind(SERVER_INET, sockaddr_in($Conf{ServerPort}, INADDR_ANY)) ) {
1760 print(LOG $bpc->timeStamp, "inet bind() failed: $!\n");
1761 exit(1);
1762 }
1763 if ( !listen(SERVER_INET, SOMAXCONN) ) {
1764 print(LOG $bpc->timeStamp, "inet listen() failed: $!\n");
1765 exit(1);
1766 }
1767 vec($FDread, fileno(SERVER_INET), 1) = 1;
1768 $ServerInetPort = $Conf{ServerPort};
1769 }
1770 }
1771
1772 #
1773 # Reload the server. Used by Main_Process_Signal when $SigName eq "HUP"
1774 # or when the command "server reload" is received.
1775 #
1776 sub ServerReload
1777 {
1778 my($mesg) = @_;
1779 $mesg = $bpc->ConfigRead() || $mesg;
1780 print(LOG $bpc->timeStamp, "$mesg\n");
1781 $Info{ConfigModTime} = $bpc->ConfigMTime();
1782 %Conf = $bpc->Conf();
1783 umask($Conf{UmaskMode});
1784 ServerSocketInit();
1785 HostsUpdate(0);
1786 $NextWakeup = 0;
1787 $Info{ConfigLTime} = time;
1788 }
1789
1790 #
1791 # Gracefully shutdown the server. Used by Main_Process_Signal when
1792 # $SigName ne "" && $SigName ne "HUP" or when the command
1793 # "server shutdown" is received.
1794 #
1795 sub ServerShutdown
1796 {
1797 my($mesg) = @_;
1798 print(LOG $bpc->timeStamp, "$mesg\n");
1799 if ( keys(%Jobs) ) {
1800 foreach my $host ( keys(%Jobs) ) {
1801 kill($bpc->sigName2num("INT"), $Jobs{$host}{pid});
1802 }
1803 sleep(1);
1804 foreach my $host ( keys(%Jobs) ) {
1805 kill($bpc->sigName2num("KILL"), $Jobs{$host}{pid});
1806 }
1807 %Jobs = ();
1808 }
1809 StatusWrite();
1810 unlink("$TopDir/log/BackupPC.pid");
1811 exit(1);
1812 }
1813

Properties

Name Value
svn:executable

  ViewVC Help
Powered by ViewVC 1.1.26