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#!/bin/perl |
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#============================================================= -*-perl-*- |
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# |
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# BackupPC: Main program for PC backups. |
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# |
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# DESCRIPTION |
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# |
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# BackupPC reads the configuration and status information from |
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# $TopDir/conf. It then runs and manages all the backup activity. |
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# |
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# As specified by $Conf{WakeupSchedule}, BackupPC wakes up periodically |
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# to queue backups on all the PCs. This is a four step process: |
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# 1) For each host and DHCP address backup requests are queued on the |
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# background command queue. |
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# 2) For each PC, BackupPC_dump is forked. Several of these may |
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# be run in parallel, based on the configuration. |
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# 3) For each complete, good, backup, BackupPC_link is forked. |
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# Only one of these tasks runs at a time. |
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# 4) In the background BackupPC_trashClean is run to remove any expired |
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# backups. Once each night, BackupPC_nightly is run to complete some |
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# additional administrative tasks (pool cleaning etc). |
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# |
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# BackupPC also listens for connections on a unix domain socket and |
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# the tcp port $Conf{ServerPort}, which are used by various |
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# sub-programs and the CGI script BackupPC_Admin for status reporting |
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# and user-initiated backup or backup cancel requests. |
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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 2.1.2, released 5 Sep 2005. |
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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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|
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use strict; |
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no utf8; |
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use vars qw(%Status %Info $Hosts); |
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use lib "__INSTALLDIR__/lib"; |
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use BackupPC::Lib; |
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use BackupPC::FileZIO; |
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|
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use File::Path; |
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use Data::Dumper; |
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use Getopt::Std; |
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use Socket; |
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use Carp; |
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use Digest::MD5; |
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use POSIX qw(setsid); |
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|
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########################################################################### |
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# Handle command line options |
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########################################################################### |
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my %opts; |
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if ( !getopts("d", \%opts) || @ARGV != 0 ) { |
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print("usage: $0 [-d]\n"); |
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exit(1); |
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} |
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|
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########################################################################### |
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# Initialize major data structures and variables |
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########################################################################### |
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|
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# |
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# Get an instance of BackupPC::Lib and get some shortcuts. |
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# |
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die("BackupPC::Lib->new failed\n") if ( !(my $bpc = BackupPC::Lib->new) ); |
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my $TopDir = $bpc->TopDir(); |
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my $BinDir = $bpc->BinDir(); |
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my %Conf = $bpc->Conf(); |
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|
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# |
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# Verify we are running as the correct user |
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# |
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if ( $Conf{BackupPCUserVerify} |
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&& $> != (my $uid = (getpwnam($Conf{BackupPCUser}))[2]) ) { |
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die "Wrong user: my userid is $>, instead of $uid ($Conf{BackupPCUser})\n"; |
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} |
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|
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# |
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# %Status maintain status information about each host. |
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# It is a hash of hashes, whose first index is the host. |
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# |
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%Status = (); |
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|
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# |
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# %Info is a hash giving general information about BackupPC status. |
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# |
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%Info = (); |
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|
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# |
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# Read old status |
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# |
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if ( -f "$TopDir/log/status.pl" && !(my $ret = do "$TopDir/log/status.pl") ) { |
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die "couldn't parse $TopDir/log/status.pl: $@" if $@; |
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die "couldn't do $TopDir/log/status.pl: $!" unless defined $ret; |
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die "couldn't run $TopDir/log/status.pl"; |
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} |
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|
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# |
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# %Jobs maintains information about currently running jobs. |
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# It is a hash of hashes, whose first index is the host. |
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# |
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my %Jobs = (); |
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|
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# |
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# There are three command queues: |
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# - @UserQueue is a queue of user initiated backup requests. |
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# - @BgQueue is a queue of automatically scheduled backup requests. |
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# - @CmdQueue is a queue of administrative jobs, including tasks |
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# like BackupPC_link, BackupPC_trashClean, and BackupPC_nightly |
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# Each queue is an array of hashes. Each hash stores information |
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# about the command request. |
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# |
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my @UserQueue = (); |
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my @CmdQueue = (); |
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my @BgQueue = (); |
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|
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# |
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# To quickly lookup if a given host is on a given queue, we keep |
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# a hash of flags for each queue type. |
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# |
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my(%CmdQueueOn, %UserQueueOn, %BgQueueOn); |
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|
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# |
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# One or more clients can connect to the server to get status information |
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# or request/cancel backups etc. The %Clients hash maintains information |
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# about each of these socket connections. The hash key is an incrementing |
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# number stored in $ClientConnCnt. Each entry is a hash that contains |
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# various information about the client connection. |
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# |
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my %Clients = (); |
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my $ClientConnCnt; |
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|
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# |
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# Read file descriptor mask used by select(). Every file descriptor |
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# on which we expect to read (or accept) has the corresponding bit |
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# set. |
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# |
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my $FDread = ''; |
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|
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# |
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# Unix seconds when we next wakeup. A value of zero forces the scheduler |
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# to compute the next wakeup time. |
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# |
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my $NextWakeup = 0; |
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|
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# |
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# Name of signal saved by catch_signal |
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# |
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my $SigName = ""; |
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|
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# |
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# Misc variables |
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# |
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my($RunNightlyWhenIdle, $FirstWakeup, $CmdJob, $ServerInetPort); |
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my($BackupPCNightlyJobs, $BackupPCNightlyLock); |
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|
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# |
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# Complete the rest of the initialization |
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# |
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Main_Initialize(); |
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|
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########################################################################### |
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# Main loop |
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########################################################################### |
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while ( 1 ) |
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{ |
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# |
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# Check if we can/should run BackupPC_nightly |
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# |
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Main_TryToRun_nightly(); |
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|
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# |
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# Check if we can run a new command from @CmdQueue. |
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# |
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Main_TryToRun_CmdQueue(); |
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|
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# |
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# Check if we can run a new command from @UserQueue or @BgQueue. |
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# |
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Main_TryToRun_Bg_or_User_Queue(); |
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|
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# |
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# Do a select() to wait for the next interesting thing to happen |
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# (timeout, signal, someone sends a message, child dies etc). |
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# |
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my $fdRead = Main_Select(); |
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|
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# |
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# Process a signal if we received one. |
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# |
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if ( $SigName ) { |
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Main_Process_Signal(); |
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$fdRead = undef; |
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} |
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|
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# |
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# Check if a timeout has occurred. |
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# |
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Main_Check_Timeout(); |
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|
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# |
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# Check for, and process, any messages (output) from our jobs |
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# |
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Main_Check_Job_Messages($fdRead); |
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|
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# |
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# Check for, and process, any output from our clients. Also checks |
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# for new connections to our SERVER_UNIX and SERVER_INET sockets. |
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# |
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Main_Check_Client_Messages($fdRead); |
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} |
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|
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############################################################################ |
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# Main_Initialize() |
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# |
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# Main initialization routine. Called once at statup. |
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############################################################################ |
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sub Main_Initialize |
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{ |
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umask($Conf{UmaskMode}); |
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|
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# |
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# Check for another running process, check that PASSWD is set and |
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# verify executables are configured correctly. |
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# |
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if ( $Info{pid} ne "" && kill(0, $Info{pid}) ) { |
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print(STDERR $bpc->timeStamp, |
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"Another BackupPC is running (pid $Info{pid}); quitting...\n"); |
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exit(1); |
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} |
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foreach my $progName ( qw(SmbClientPath NmbLookupPath PingPath DfPath |
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SendmailPath SshPath) ) { |
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next if ( $Conf{$progName} eq "" || -x $Conf{$progName} ); |
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print(STDERR $bpc->timeStamp, |
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"\$Conf{$progName} = '$Conf{$progName}' is not a" |
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. " valid executable program\n"); |
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exit(1); |
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} |
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|
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if ( $opts{d} ) { |
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# |
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# daemonize by forking; more robust method per: |
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# http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=301057 |
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# |
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my $pid; |
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defined($pid = fork) or die("Can't fork: $!"); |
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exit if( $pid ); # parent exits |
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|
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POSIX::setsid(); |
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defined($pid = fork) or die("Can't fork: $!"); |
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exit if $pid; # parent exits |
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|
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chdir ("/") or die("Cannot chdir to /: $!\n"); |
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close(STDIN); |
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open(STDIN , ">/dev/null") or die("Cannot open /dev/null as stdin\n"); |
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# STDOUT and STDERR are handled in LogFileOpen() right below, |
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# otherwise we would have to reopen them too. |
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} |
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|
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# |
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# Open the LOG file and redirect STDOUT, STDERR etc |
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# |
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LogFileOpen(); |
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|
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# |
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# Read the hosts file (force a read). |
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# |
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exit(1) if ( !HostsUpdate(1) ); |
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|
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# |
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# Clean up %ENV for taint checking |
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# |
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delete @ENV{qw(IFS CDPATH ENV BASH_ENV)}; |
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$ENV{PATH} = $Conf{MyPath}; |
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|
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# |
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# Initialize server sockets |
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# |
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ServerSocketInit(); |
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|
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# |
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# Catch various signals |
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# |
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foreach my $sig ( qw(INT BUS SEGV PIPE TERM ALRM HUP) ) { |
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$SIG{$sig} = \&catch_signal; |
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} |
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|
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# |
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# Report that we started, and update %Info. |
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# |
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print(LOG $bpc->timeStamp, "BackupPC started, pid $$\n"); |
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$Info{ConfigModTime} = $bpc->ConfigMTime(); |
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$Info{pid} = $$; |
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$Info{startTime} = time; |
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$Info{ConfigLTime} = time; |
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$Info{Version} = $bpc->{Version}; |
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|
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# |
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# Update the status left over form the last time BackupPC ran. |
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# Requeue any pending links. |
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# |
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foreach my $host ( sort(keys(%$Hosts)) ) { |
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if ( $Status{$host}{state} eq "Status_backup_in_progress" ) { |
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# |
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# should we restart it? skip it for now. |
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# |
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$Status{$host}{state} = "Status_idle"; |
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} elsif ( $Status{$host}{state} eq "Status_link_pending" |
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|| $Status{$host}{state} eq "Status_link_running" ) { |
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QueueLink($host); |
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} else { |
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$Status{$host}{state} = "Status_idle"; |
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} |
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$Status{$host}{activeJob} = 0; |
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} |
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foreach my $host ( sort(keys(%Status)) ) { |
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next if ( defined($Hosts->{$host}) ); |
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delete($Status{$host}); |
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} |
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|
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# |
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# Write out our initial status and save our PID |
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# |
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StatusWrite(); |
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if ( open(PID, ">", "$TopDir/log/BackupPC.pid") ) { |
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print(PID $$); |
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close(PID); |
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} |
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|
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# |
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# For unknown reasons there is a very infrequent error about not |
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# being able to coerce GLOBs inside the XS Data::Dumper. I've |
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# only seen this on a particular platform and perl version. |
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# For now the workaround appears to be use the perl version of |
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# XS Data::Dumper. |
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# |
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$Data::Dumper::Useqq = 1; |
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} |
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|
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############################################################################ |
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# Main_TryToRun_nightly() |
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# |
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# Checks to see if we can/should run BackupPC_nightly or |
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# BackupPC_trashClean. If so we push the appropriate command onto |
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# @CmdQueue. |
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############################################################################ |
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sub Main_TryToRun_nightly |
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{ |
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# |
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# Check if we should run BackupPC_nightly or BackupPC_trashClean. |
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# BackupPC_nightly is run when the current job queue is empty. |
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# BackupPC_trashClean is run in the background always. |
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# |
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my $trashCleanRunning = defined($Jobs{$bpc->trashJob}) ? 1 : 0; |
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if ( !$trashCleanRunning && !$CmdQueueOn{$bpc->trashJob} ) { |
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# |
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# This should only happen once at startup, but just in case this |
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# code will re-start BackupPC_trashClean if it quits |
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# |
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unshift(@CmdQueue, { |
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host => $bpc->trashJob, |
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user => "BackupPC", |
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reqTime => time, |
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cmd => ["$BinDir/BackupPC_trashClean"], |
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}); |
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$CmdQueueOn{$bpc->trashJob} = 1; |
| 389 |
} |
| 390 |
if ( keys(%Jobs) == $trashCleanRunning && $RunNightlyWhenIdle == 1 ) { |
| 391 |
|
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# |
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# Queue multiple nightly jobs based on the configuration |
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# |
| 395 |
$Conf{MaxBackupPCNightlyJobs} = 1 |
| 396 |
if ( $Conf{MaxBackupPCNightlyJobs} <= 0 ); |
| 397 |
$Conf{BackupPCNightlyPeriod} = 1 |
| 398 |
if ( $Conf{BackupPCNightlyPeriod} <= 0 ); |
| 399 |
# |
| 400 |
# Decide what subset of the 16 top-level directories 0..9a..f |
| 401 |
# we run BackupPC_nightly on, based on $Conf{BackupPCNightlyPeriod}. |
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# If $Conf{BackupPCNightlyPeriod} == 1 then we run 0..15 every |
| 403 |
# time. If $Conf{BackupPCNightlyPeriod} == 2 then we run |
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# 0..7 one night and 89a-f the next night. And so on. |
| 405 |
# |
| 406 |
# $Info{NightlyPhase} counts which night, from 0 to |
| 407 |
# $Conf{BackupPCNightlyPeriod} - 1. |
| 408 |
# |
| 409 |
my $start = int($Info{NightlyPhase} * 16 |
| 410 |
/ $Conf{BackupPCNightlyPeriod}); |
| 411 |
my $end = int(($Info{NightlyPhase} + 1) * 16 |
| 412 |
/ $Conf{BackupPCNightlyPeriod}); |
| 413 |
$end = $start + 1 if ( $end <= $start ); |
| 414 |
$Info{NightlyPhase}++; |
| 415 |
$Info{NightlyPhase} = 0 if ( $end >= 16 ); |
| 416 |
|
| 417 |
# |
| 418 |
# Zero out the data we expect to get from BackupPC_nightly. |
| 419 |
# In the future if we want to split BackupPC_nightly over |
| 420 |
# more than one night we will only zero out the portion |
| 421 |
# that we are running right now. |
| 422 |
# |
| 423 |
for my $p ( qw(pool cpool) ) { |
| 424 |
for ( my $i = $start ; $i < $end ; $i++ ) { |
| 425 |
$Info{pool}{$p}[$i]{FileCnt} = 0; |
| 426 |
$Info{pool}{$p}[$i]{DirCnt} = 0; |
| 427 |
$Info{pool}{$p}[$i]{Kb} = 0; |
| 428 |
$Info{pool}{$p}[$i]{Kb2} = 0; |
| 429 |
$Info{pool}{$p}[$i]{KbRm} = 0; |
| 430 |
$Info{pool}{$p}[$i]{FileCntRm} = 0; |
| 431 |
$Info{pool}{$p}[$i]{FileCntRep} = 0; |
| 432 |
$Info{pool}{$p}[$i]{FileRepMax} = 0; |
| 433 |
$Info{pool}{$p}[$i]{FileCntRename} = 0; |
| 434 |
$Info{pool}{$p}[$i]{FileLinkMax} = 0; |
| 435 |
$Info{pool}{$p}[$i]{Time} = 0; |
| 436 |
} |
| 437 |
} |
| 438 |
print(LOG $bpc->timeStamp, |
| 439 |
sprintf("Running %d BackupPC_nightly jobs from %d..%d" |
| 440 |
. " (out of 0..15)\n", |
| 441 |
$Conf{MaxBackupPCNightlyJobs}, $start, $end - 1)); |
| 442 |
|
| 443 |
# |
| 444 |
# Now queue the $Conf{MaxBackupPCNightlyJobs} jobs. |
| 445 |
# The granularity on start and end is now 0..256. |
| 446 |
# |
| 447 |
$start *= 16; |
| 448 |
$end *= 16; |
| 449 |
my $start0 = $start; |
| 450 |
for ( my $i = 0 ; $i < $Conf{MaxBackupPCNightlyJobs} ; $i++ ) { |
| 451 |
# |
| 452 |
# The first nightly job gets the -m option (does email, log aging). |
| 453 |
# All jobs get the start and end options from 0..255 telling |
| 454 |
# them which parts of the pool to traverse. |
| 455 |
# |
| 456 |
my $cmd = ["$BinDir/BackupPC_nightly"]; |
| 457 |
push(@$cmd, "-m") if ( $i == 0 ); |
| 458 |
push(@$cmd, $start); |
| 459 |
$start = $start0 + int(($end - $start0) |
| 460 |
* ($i + 1) / $Conf{MaxBackupPCNightlyJobs}); |
| 461 |
push(@$cmd, $start - 1); |
| 462 |
|
| 463 |
my $job = $bpc->adminJob($i); |
| 464 |
unshift(@CmdQueue, { |
| 465 |
host => $job, |
| 466 |
user => "BackupPC", |
| 467 |
reqTime => time, |
| 468 |
cmd => $cmd, |
| 469 |
}); |
| 470 |
$CmdQueueOn{$job} = 1; |
| 471 |
} |
| 472 |
$RunNightlyWhenIdle = 2; |
| 473 |
|
| 474 |
} |
| 475 |
} |
| 476 |
|
| 477 |
############################################################################ |
| 478 |
# Main_TryToRun_CmdQueue() |
| 479 |
# |
| 480 |
# Decide if we can run a new command from the @CmdQueue. |
| 481 |
# We only run one of these at a time. The @CmdQueue is |
| 482 |
# used to run BackupPC_link (for the corresponding host), |
| 483 |
# BackupPC_trashClean, and BackupPC_nightly using a fake |
| 484 |
# host name of $bpc->adminJob. |
| 485 |
############################################################################ |
| 486 |
sub Main_TryToRun_CmdQueue |
| 487 |
{ |
| 488 |
my($req, $host); |
| 489 |
|
| 490 |
while ( $CmdJob eq "" && @CmdQueue > 0 && $RunNightlyWhenIdle != 1 |
| 491 |
|| @CmdQueue > 0 && $RunNightlyWhenIdle == 2 |
| 492 |
&& $bpc->isAdminJob($CmdQueue[0]->{host}) |
| 493 |
) { |
| 494 |
local(*FH); |
| 495 |
$req = pop(@CmdQueue); |
| 496 |
|
| 497 |
$host = $req->{host}; |
| 498 |
if ( defined($Jobs{$host}) ) { |
| 499 |
print(LOG $bpc->timeStamp, |
| 500 |
"Botch on admin job for $host: already in use!!\n"); |
| 501 |
# |
| 502 |
# This could happen during normal opertion: a user could |
| 503 |
# request a backup while a BackupPC_link is queued from |
| 504 |
# a previous backup. But it is unlikely. Just put this |
| 505 |
# request back on the end of the queue. |
| 506 |
# |
| 507 |
unshift(@CmdQueue, $req); |
| 508 |
return; |
| 509 |
} |
| 510 |
$CmdQueueOn{$host} = 0; |
| 511 |
my $cmd = $req->{cmd}; |
| 512 |
my $pid = open(FH, "-|"); |
| 513 |
if ( !defined($pid) ) { |
| 514 |
print(LOG $bpc->timeStamp, |
| 515 |
"can't fork for $host, request by $req->{user}\n"); |
| 516 |
close(FH); |
| 517 |
next; |
| 518 |
} |
| 519 |
if ( !$pid ) { |
| 520 |
setpgrp 0,0; |
| 521 |
exec(@$cmd); |
| 522 |
print(LOG $bpc->timeStamp, "can't exec @$cmd for $host\n"); |
| 523 |
exit(0); |
| 524 |
} |
| 525 |
$Jobs{$host}{pid} = $pid; |
| 526 |
$Jobs{$host}{fh} = *FH; |
| 527 |
$Jobs{$host}{fn} = fileno(FH); |
| 528 |
vec($FDread, $Jobs{$host}{fn}, 1) = 1; |
| 529 |
$Jobs{$host}{startTime} = time; |
| 530 |
$Jobs{$host}{reqTime} = $req->{reqTime}; |
| 531 |
$cmd = $bpc->execCmd2ShellCmd(@$cmd); |
| 532 |
$Jobs{$host}{cmd} = $cmd; |
| 533 |
$Jobs{$host}{user} = $req->{user}; |
| 534 |
$Jobs{$host}{type} = $Status{$host}{type}; |
| 535 |
$Status{$host}{state} = "Status_link_running"; |
| 536 |
$Status{$host}{activeJob} = 1; |
| 537 |
$Status{$host}{endTime} = time; |
| 538 |
$CmdJob = $host if ( $host ne $bpc->trashJob ); |
| 539 |
$cmd =~ s/$BinDir\///g; |
| 540 |
print(LOG $bpc->timeStamp, "Running $cmd (pid=$pid)\n"); |
| 541 |
if ( $cmd =~ /^BackupPC_nightly\s/ ) { |
| 542 |
$BackupPCNightlyJobs++; |
| 543 |
$BackupPCNightlyLock++; |
| 544 |
} |
| 545 |
} |
| 546 |
} |
| 547 |
|
| 548 |
############################################################################ |
| 549 |
# Main_TryToRun_Bg_or_User_Queue() |
| 550 |
# |
| 551 |
# Decide if we can run any new backup requests from @BgQueue |
| 552 |
# or @UserQueue. Several of these can be run at the same time |
| 553 |
# based on %Conf settings. Jobs from @UserQueue take priority, |
| 554 |
# and at total of $Conf{MaxBackups} + $Conf{MaxUserBackups} |
| 555 |
# simultaneous jobs can run from @UserQueue. After @UserQueue |
| 556 |
# is exhausted, up to $Conf{MaxBackups} simultaneous jobs can |
| 557 |
# run from @BgQueue. |
| 558 |
############################################################################ |
| 559 |
sub Main_TryToRun_Bg_or_User_Queue |
| 560 |
{ |
| 561 |
my($req, $host); |
| 562 |
while ( $RunNightlyWhenIdle == 0 ) { |
| 563 |
local(*FH); |
| 564 |
my(@args, @deferUserQueue, @deferBgQueue, $progName, $type); |
| 565 |
my $nJobs = keys(%Jobs); |
| 566 |
# |
| 567 |
# CmdJob and trashClean don't count towards MaxBackups / MaxUserBackups |
| 568 |
# |
| 569 |
$nJobs -= $BackupPCNightlyJobs if ( $CmdJob ne "" ); |
| 570 |
$nJobs-- if ( defined($Jobs{$bpc->trashJob} ) ); |
| 571 |
if ( $nJobs < $Conf{MaxBackups} + $Conf{MaxUserBackups} |
| 572 |
&& @UserQueue > 0 ) { |
| 573 |
$req = pop(@UserQueue); |
| 574 |
if ( defined($Jobs{$req->{host}}) ) { |
| 575 |
push(@deferUserQueue, $req); |
| 576 |
next; |
| 577 |
} |
| 578 |
push(@args, $req->{doFull} ? "-f" : "-i") |
| 579 |
if (( !$req->{restore} ) && ( !$req->{archive} )); |
| 580 |
$UserQueueOn{$req->{host}} = 0; |
| 581 |
} elsif ( $nJobs < $Conf{MaxBackups} |
| 582 |
&& (@CmdQueue + $nJobs) |
| 583 |
<= $Conf{MaxBackups} + $Conf{MaxPendingCmds} |
| 584 |
&& @BgQueue > 0 ) { |
| 585 |
my $du; |
| 586 |
if ( time - $Info{DUlastValueTime} >= 60 ) { |
| 587 |
# |
| 588 |
# Update our notion of disk usage no more than |
| 589 |
# once every minute |
| 590 |
# |
| 591 |
$du = $bpc->CheckFileSystemUsage($TopDir); |
| 592 |
$Info{DUlastValue} = $du; |
| 593 |
$Info{DUlastValueTime} = time; |
| 594 |
} else { |
| 595 |
# |
| 596 |
# if we recently checked it then just use the old value |
| 597 |
# |
| 598 |
$du = $Info{DUlastValue}; |
| 599 |
} |
| 600 |
if ( $Info{DUDailyMaxReset} ) { |
| 601 |
$Info{DUDailyMaxStartTime} = time; |
| 602 |
$Info{DUDailyMaxReset} = 0; |
| 603 |
$Info{DUDailyMax} = 0; |
| 604 |
} |
| 605 |
if ( $du > $Info{DUDailyMax} ) { |
| 606 |
$Info{DUDailyMax} = $du; |
| 607 |
$Info{DUDailyMaxTime} = time; |
| 608 |
} |
| 609 |
if ( $du > $Conf{DfMaxUsagePct} ) { |
| 610 |
my $nSkip = @BgQueue + @deferBgQueue; |
| 611 |
print(LOG $bpc->timeStamp, |
| 612 |
"Disk too full ($du%); skipping $nSkip hosts\n"); |
| 613 |
$Info{DUDailySkipHostCnt} += $nSkip; |
| 614 |
@BgQueue = (); |
| 615 |
@deferBgQueue = (); |
| 616 |
%BgQueueOn = (); |
| 617 |
next; |
| 618 |
} |
| 619 |
$req = pop(@BgQueue); |
| 620 |
if ( defined($Jobs{$req->{host}}) ) { |
| 621 |
push(@deferBgQueue, $req); |
| 622 |
next; |
| 623 |
} |
| 624 |
$BgQueueOn{$req->{host}} = 0; |
| 625 |
} else { |
| 626 |
while ( @deferBgQueue ) { |
| 627 |
push(@BgQueue, pop(@deferBgQueue)); |
| 628 |
} |
| 629 |
while ( @deferUserQueue ) { |
| 630 |
push(@UserQueue, pop(@deferUserQueue)); |
| 631 |
} |
| 632 |
last; |
| 633 |
} |
| 634 |
$host = $req->{host}; |
| 635 |
my $user = $req->{user}; |
| 636 |
if ( $req->{restore} ) { |
| 637 |
$progName = "BackupPC_restore"; |
| 638 |
$type = "restore"; |
| 639 |
push(@args, $req->{hostIP}, $req->{host}, $req->{reqFileName}); |
| 640 |
} elsif ( $req->{archive} ) { |
| 641 |
$progName = "BackupPC_archive"; |
| 642 |
$type = "archive"; |
| 643 |
push(@args, $req->{user}, $req->{host}, $req->{reqFileName}); |
| 644 |
} else { |
| 645 |
$progName = "BackupPC_dump"; |
| 646 |
$type = "backup"; |
| 647 |
push(@args, "-d") if ( $req->{dhcp} ); |
| 648 |
push(@args, "-e") if ( $req->{dumpExpire} ); |
| 649 |
push(@args, $host); |
| 650 |
} |
| 651 |
my $pid = open(FH, "-|"); |
| 652 |
if ( !defined($pid) ) { |
| 653 |
print(LOG $bpc->timeStamp, |
| 654 |
"can't fork to run $progName for $host, request by $user\n"); |
| 655 |
close(FH); |
| 656 |
next; |
| 657 |
} |
| 658 |
if ( !$pid ) { |
| 659 |
setpgrp 0,0; |
| 660 |
exec("$BinDir/$progName", @args); |
| 661 |
print(LOG $bpc->timeStamp, "can't exec $progName for $host\n"); |
| 662 |
exit(0); |
| 663 |
} |
| 664 |
$Jobs{$host}{pid} = $pid; |
| 665 |
$Jobs{$host}{fh} = *FH; |
| 666 |
$Jobs{$host}{fn} = fileno(FH); |
| 667 |
$Jobs{$host}{dhcp} = $req->{dhcp}; |
| 668 |
vec($FDread, $Jobs{$host}{fn}, 1) = 1; |
| 669 |
$Jobs{$host}{startTime} = time; |
| 670 |
$Jobs{$host}{reqTime} = $req->{reqTime}; |
| 671 |
$Jobs{$host}{userReq} = $req->{userReq}; |
| 672 |
$Jobs{$host}{cmd} = $bpc->execCmd2ShellCmd($progName, @args); |
| 673 |
$Jobs{$host}{user} = $user; |
| 674 |
$Jobs{$host}{type} = $type; |
| 675 |
$Status{$host}{userReq} = $req->{userReq} |
| 676 |
if ( defined($Hosts->{$host}) ); |
| 677 |
if ( !$req->{dhcp} ) { |
| 678 |
$Status{$host}{state} = "Status_".$type."_starting"; |
| 679 |
$Status{$host}{activeJob} = 1; |
| 680 |
$Status{$host}{startTime} = time; |
| 681 |
$Status{$host}{endTime} = ""; |
| 682 |
} |
| 683 |
} |
| 684 |
} |
| 685 |
|
| 686 |
############################################################################ |
| 687 |
# Main_Select() |
| 688 |
# |
| 689 |
# If necessary, figure out when to next wakeup based on $Conf{WakeupSchedule}, |
| 690 |
# and then do a select() to wait for the next thing to happen |
| 691 |
# (timeout, signal, someone sends a message, child dies etc). |
| 692 |
############################################################################ |
| 693 |
sub Main_Select |
| 694 |
{ |
| 695 |
if ( $NextWakeup <= 0 ) { |
| 696 |
# |
| 697 |
# Figure out when to next wakeup based on $Conf{WakeupSchedule}. |
| 698 |
# |
| 699 |
my($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) |
| 700 |
= localtime(time); |
| 701 |
my($currHours) = $hour + $min / 60 + $sec / 3600; |
| 702 |
if ( $bpc->ConfigMTime() != $Info{ConfigModTime} ) { |
| 703 |
ServerReload("Re-read config file because mtime changed"); |
| 704 |
} |
| 705 |
my $delta = -1; |
| 706 |
foreach my $t ( @{$Conf{WakeupSchedule} || [0..23]} ) { |
| 707 |
next if ( $t < 0 || $t > 24 ); |
| 708 |
my $tomorrow = $t + 24; |
| 709 |
if ( $delta < 0 |
| 710 |
|| ($tomorrow - $currHours > 0 |
| 711 |
&& $delta > $tomorrow - $currHours) ) { |
| 712 |
$delta = $tomorrow - $currHours; |
| 713 |
$FirstWakeup = $t == $Conf{WakeupSchedule}[0]; |
| 714 |
} |
| 715 |
if ( $delta < 0 |
| 716 |
|| ($t - $currHours > 0 && $delta > $t - $currHours) ) { |
| 717 |
$delta = $t - $currHours; |
| 718 |
$FirstWakeup = $t == $Conf{WakeupSchedule}[0]; |
| 719 |
} |
| 720 |
} |
| 721 |
$NextWakeup = time + $delta * 3600; |
| 722 |
$Info{nextWakeup} = $NextWakeup; |
| 723 |
print(LOG $bpc->timeStamp, "Next wakeup is ", |
| 724 |
$bpc->timeStamp($NextWakeup, 1), "\n"); |
| 725 |
} |
| 726 |
# |
| 727 |
# Call select(), waiting until either a signal, a timeout, |
| 728 |
# any output from our jobs, or any messages from clients |
| 729 |
# connected via tcp. |
| 730 |
# select() is where we (hopefully) spend most of our time blocked... |
| 731 |
# |
| 732 |
my $timeout = $NextWakeup - time; |
| 733 |
$timeout = 1 if ( $timeout <= 0 ); |
| 734 |
my $ein = $FDread; |
| 735 |
select(my $rout = $FDread, undef, $ein, $timeout); |
| 736 |
|
| 737 |
return $rout; |
| 738 |
} |
| 739 |
|
| 740 |
############################################################################ |
| 741 |
# Main_Process_Signal() |
| 742 |
# |
| 743 |
# Signal handler. |
| 744 |
############################################################################ |
| 745 |
sub Main_Process_Signal |
| 746 |
{ |
| 747 |
# |
| 748 |
# Process signals |
| 749 |
# |
| 750 |
if ( $SigName eq "HUP" ) { |
| 751 |
ServerReload("Re-read config file because of a SIG_HUP"); |
| 752 |
} elsif ( $SigName ) { |
| 753 |
ServerShutdown("Got signal $SigName... cleaning up"); |
| 754 |
} |
| 755 |
$SigName = ""; |
| 756 |
} |
| 757 |
|
| 758 |
############################################################################ |
| 759 |
# Main_Check_Timeout() |
| 760 |
# |
| 761 |
# Check if a timeout has occured, and if so, queue all the PCs for backups. |
| 762 |
# Also does log file aging on the first timeout after midnight. |
| 763 |
############################################################################ |
| 764 |
sub Main_Check_Timeout |
| 765 |
{ |
| 766 |
# |
| 767 |
# Process timeouts |
| 768 |
# |
| 769 |
return if ( time < $NextWakeup || $NextWakeup <= 0 ); |
| 770 |
$NextWakeup = 0; |
| 771 |
if ( $FirstWakeup ) { |
| 772 |
# |
| 773 |
# This is the first wakeup after midnight. Do log file aging |
| 774 |
# and various house keeping. |
| 775 |
# |
| 776 |
$FirstWakeup = 0; |
| 777 |
printf(LOG "%s24hr disk usage: %d%% max, %d%% recent," |
| 778 |
. " %d skipped hosts\n", |
| 779 |
$bpc->timeStamp, $Info{DUDailyMax}, $Info{DUlastValue}, |
| 780 |
$Info{DUDailySkipHostCnt}); |
| 781 |
$Info{DUDailyMaxReset} = 1; |
| 782 |
$Info{DUDailyMaxPrev} = $Info{DUDailyMax}; |
| 783 |
$Info{DUDailySkipHostCntPrev} = $Info{DUDailySkipHostCnt}; |
| 784 |
$Info{DUDailySkipHostCnt} = 0; |
| 785 |
my $lastLog = $Conf{MaxOldLogFiles} - 1; |
| 786 |
if ( -f "$TopDir/log/LOG.$lastLog" ) { |
| 787 |
print(LOG $bpc->timeStamp, |
| 788 |
"Removing $TopDir/log/LOG.$lastLog\n"); |
| 789 |
unlink("$TopDir/log/LOG.$lastLog"); |
| 790 |
} |
| 791 |
if ( -f "$TopDir/log/LOG.$lastLog.z" ) { |
| 792 |
print(LOG $bpc->timeStamp, |
| 793 |
"Removing $TopDir/log/LOG.$lastLog.z\n"); |
| 794 |
unlink("$TopDir/log/LOG.$lastLog.z"); |
| 795 |
} |
| 796 |
print(LOG $bpc->timeStamp, "Aging LOG files, LOG -> LOG.0 -> " |
| 797 |
. "LOG.1 -> ... -> LOG.$lastLog\n"); |
| 798 |
close(STDERR); # dup of LOG |
| 799 |
close(STDOUT); # dup of LOG |
| 800 |
close(LOG); |
| 801 |
for ( my $i = $lastLog - 1 ; $i >= 0 ; $i-- ) { |
| 802 |
my $j = $i + 1; |
| 803 |
rename("$TopDir/log/LOG.$i", "$TopDir/log/LOG.$j") |
| 804 |
if ( -f "$TopDir/log/LOG.$i" ); |
| 805 |
rename("$TopDir/log/LOG.$i.z", "$TopDir/log/LOG.$j.z") |
| 806 |
if ( -f "$TopDir/log/LOG.$i.z" ); |
| 807 |
} |
| 808 |
# |
| 809 |
# Compress the log file LOG -> LOG.0.z (if enabled). |
| 810 |
# Otherwise, just rename LOG -> LOG.0. |
| 811 |
# |
| 812 |
BackupPC::FileZIO->compressCopy("$TopDir/log/LOG", |
| 813 |
"$TopDir/log/LOG.0.z", |
| 814 |
"$TopDir/log/LOG.0", |
| 815 |
$Conf{CompressLevel}, 1); |
| 816 |
LogFileOpen(); |
| 817 |
# |
| 818 |
# Remember to run nightly script after current jobs are done |
| 819 |
# |
| 820 |
$RunNightlyWhenIdle = 1; |
| 821 |
} |
| 822 |
# |
| 823 |
# Write out the current status and then queue all the PCs |
| 824 |
# |
| 825 |
HostsUpdate(0); |
| 826 |
StatusWrite(); |
| 827 |
%BgQueueOn = () if ( @BgQueue == 0 ); |
| 828 |
%UserQueueOn = () if ( @UserQueue == 0 ); |
| 829 |
%CmdQueueOn = () if ( @CmdQueue == 0 ); |
| 830 |
QueueAllPCs(); |
| 831 |
} |
| 832 |
|
| 833 |
############################################################################ |
| 834 |
# Main_Check_Job_Messages($fdRead) |
| 835 |
# |
| 836 |
# Check if select() says we have bytes waiting from any of our jobs. |
| 837 |
# Handle each of the messages when complete (newline terminated). |
| 838 |
############################################################################ |
| 839 |
sub Main_Check_Job_Messages |
| 840 |
{ |
| 841 |
my($fdRead) = @_; |
| 842 |
foreach my $host ( keys(%Jobs) ) { |
| 843 |
next if ( !vec($fdRead, $Jobs{$host}{fn}, 1) ); |
| 844 |
my $mesg; |
| 845 |
# |
| 846 |
# do a last check to make sure there is something to read so |
| 847 |
# we are absolutely sure we won't block. |
| 848 |
# |
| 849 |
vec(my $readMask, $Jobs{$host}{fn}, 1) = 1; |
| 850 |
if ( !select($readMask, undef, undef, 0.0) ) { |
| 851 |
print(LOG $bpc->timeStamp, "Botch in Main_Check_Job_Messages:" |
| 852 |
. " nothing to read from $host. Debug dump:\n"); |
| 853 |
my($dump) = Data::Dumper->new( |
| 854 |
[ \%Clients, \%Jobs, \$FDread, \$fdRead], |
| 855 |
[qw(*Clients, *Jobs *FDread, *fdRead)]); |
| 856 |
$dump->Indent(1); |
| 857 |
print(LOG $dump->Dump); |
| 858 |
next; |
| 859 |
} |
| 860 |
my $nbytes = sysread($Jobs{$host}{fh}, $mesg, 1024); |
| 861 |
$Jobs{$host}{mesg} .= $mesg if ( $nbytes > 0 ); |
| 862 |
# |
| 863 |
# Process any complete lines of output from this jobs. |
| 864 |
# Any output to STDOUT or STDERR from the children is processed here. |
| 865 |
# |
| 866 |
while ( $Jobs{$host}{mesg} =~ /(.*?)[\n\r]+(.*)/s ) { |
| 867 |
$mesg = $1; |
| 868 |
$Jobs{$host}{mesg} = $2; |
| 869 |
if ( $Jobs{$host}{dhcp} ) { |
| 870 |
if ( $mesg =~ /^DHCP (\S+) (\S+)/ ) { |
| 871 |
my $newHost = $bpc->uriUnesc($2); |
| 872 |
if ( defined($Jobs{$newHost}) ) { |
| 873 |
print(LOG $bpc->timeStamp, |
| 874 |
"Backup on $newHost is already running\n"); |
| 875 |
kill($bpc->sigName2num("INT"), $Jobs{$host}{pid}); |
| 876 |
$nbytes = 0; |
| 877 |
last; |
| 878 |
} |
| 879 |
$Jobs{$host}{dhcpHostIP} = $host; |
| 880 |
$Status{$newHost}{dhcpHostIP} = $host; |
| 881 |
$Jobs{$newHost} = $Jobs{$host}; |
| 882 |
delete($Jobs{$host}); |
| 883 |
$host = $newHost; |
| 884 |
$Status{$host}{state} = "Status_backup_starting"; |
| 885 |
$Status{$host}{activeJob} = 1; |
| 886 |
$Status{$host}{startTime} = $Jobs{$host}{startTime}; |
| 887 |
$Status{$host}{endTime} = ""; |
| 888 |
$Jobs{$host}{dhcp} = 0; |
| 889 |
} else { |
| 890 |
print(LOG $bpc->timeStamp, "dhcp $host: $mesg\n"); |
| 891 |
} |
| 892 |
} elsif ( $mesg =~ /^started (.*) dump, share=(.*)/ ) { |
| 893 |
$Jobs{$host}{type} = $1; |
| 894 |
$Jobs{$host}{shareName} = $2; |
| 895 |
print(LOG $bpc->timeStamp, |
| 896 |
"Started $1 backup on $host (pid=$Jobs{$host}{pid}", |
| 897 |
$Jobs{$host}{dhcpHostIP} |
| 898 |
? ", dhcp=$Jobs{$host}{dhcpHostIP}" : "", |
| 899 |
", share=$Jobs{$host}{shareName})\n"); |
| 900 |
$Status{$host}{state} = "Status_backup_in_progress"; |
| 901 |
$Status{$host}{reason} = ""; |
| 902 |
$Status{$host}{type} = $1; |
| 903 |
$Status{$host}{startTime} = time; |
| 904 |
$Status{$host}{deadCnt} = 0; |
| 905 |
$Status{$host}{aliveCnt}++; |
| 906 |
$Status{$host}{dhcpCheckCnt}-- |
| 907 |
if ( $Status{$host}{dhcpCheckCnt} > 0 ); |
| 908 |
} elsif ( $mesg =~ /^xferPids (.*)/ ) { |
| 909 |
$Jobs{$host}{xferPid} = $1; |
| 910 |
} elsif ( $mesg =~ /^started_restore/ ) { |
| 911 |
$Jobs{$host}{type} = "restore"; |
| 912 |
print(LOG $bpc->timeStamp, |
| 913 |
"Started restore on $host" |
| 914 |
. " (pid=$Jobs{$host}{pid})\n"); |
| 915 |
$Status{$host}{state} = "Status_restore_in_progress"; |
| 916 |
$Status{$host}{reason} = ""; |
| 917 |
$Status{$host}{type} = "restore"; |
| 918 |
$Status{$host}{startTime} = time; |
| 919 |
$Status{$host}{deadCnt} = 0; |
| 920 |
$Status{$host}{aliveCnt}++; |
| 921 |
} elsif ( $mesg =~ /^started_archive/ ) { |
| 922 |
$Jobs{$host}{type} = "archive"; |
| 923 |
print(LOG $bpc->timeStamp, |
| 924 |
"Started archive on $host" |
| 925 |
. " (pid=$Jobs{$host}{pid})\n"); |
| 926 |
$Status{$host}{state} = "Status_archive_in_progress"; |
| 927 |
$Status{$host}{reason} = ""; |
| 928 |
$Status{$host}{type} = "archive"; |
| 929 |
$Status{$host}{startTime} = time; |
| 930 |
$Status{$host}{deadCnt} = 0; |
| 931 |
$Status{$host}{aliveCnt}++; |
| 932 |
} elsif ( $mesg =~ /^(full|incr) backup complete/ ) { |
| 933 |
print(LOG $bpc->timeStamp, "Finished $1 backup on $host\n"); |
| 934 |
$Status{$host}{reason} = "Reason_backup_done"; |
| 935 |
delete($Status{$host}{error}); |
| 936 |
delete($Status{$host}{errorTime}); |
| 937 |
$Status{$host}{endTime} = time; |
| 938 |
$Status{$host}{lastGoodBackupTime} = time; |
| 939 |
} elsif ( $mesg =~ /^backups disabled/ ) { |
| 940 |
print(LOG $bpc->timeStamp, |
| 941 |
"Ignoring old backup error on $host\n"); |
| 942 |
$Status{$host}{reason} = "Reason_backup_done"; |
| 943 |
delete($Status{$host}{error}); |
| 944 |
delete($Status{$host}{errorTime}); |
| 945 |
$Status{$host}{endTime} = time; |
| 946 |
} elsif ( $mesg =~ /^restore complete/ ) { |
| 947 |
print(LOG $bpc->timeStamp, "Finished restore on $host\n"); |
| 948 |
$Status{$host}{reason} = "Reason_restore_done"; |
| 949 |
delete($Status{$host}{error}); |
| 950 |
delete($Status{$host}{errorTime}); |
| 951 |
$Status{$host}{endTime} = time; |
| 952 |
} elsif ( $mesg =~ /^archive complete/ ) { |
| 953 |
print(LOG $bpc->timeStamp, "Finished archive on $host\n"); |
| 954 |
$Status{$host}{reason} = "Reason_archive_done"; |
| 955 |
delete($Status{$host}{error}); |
| 956 |
delete($Status{$host}{errorTime}); |
| 957 |
$Status{$host}{endTime} = time; |
| 958 |
} elsif ( $mesg =~ /^nothing to do/ ) { |
| 959 |
if ( $Status{$host}{reason} ne "Reason_backup_failed" |
| 960 |
&& $Status{$host}{reason} ne "Reason_restore_failed" ) { |
| 961 |
$Status{$host}{state} = "Status_idle"; |
| 962 |
$Status{$host}{reason} = "Reason_nothing_to_do"; |
| 963 |
$Status{$host}{startTime} = time; |
| 964 |
} |
| 965 |
$Status{$host}{dhcpCheckCnt}-- |
| 966 |
if ( $Status{$host}{dhcpCheckCnt} > 0 ); |
| 967 |
} elsif ( $mesg =~ /^no ping response/ |
| 968 |
|| $mesg =~ /^ping too slow/ |
| 969 |
|| $mesg =~ /^host not found/ ) { |
| 970 |
$Status{$host}{state} = "Status_idle"; |
| 971 |
if ( $Status{$host}{userReq} |
| 972 |
|| $Status{$host}{reason} ne "Reason_backup_failed" |
| 973 |
|| $Status{$host}{error} =~ /^aborted by user/ ) { |
| 974 |
$Status{$host}{reason} = "Reason_no_ping"; |
| 975 |
$Status{$host}{error} = $mesg; |
| 976 |
$Status{$host}{startTime} = time; |
| 977 |
} |
| 978 |
$Status{$host}{deadCnt}++; |
| 979 |
if ( $Status{$host}{deadCnt} >= $Conf{BlackoutBadPingLimit} ) { |
| 980 |
$Status{$host}{aliveCnt} = 0; |
| 981 |
} |
| 982 |
} elsif ( $mesg =~ /^dump 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_backup_canceled_by_user" ) { |
| 989 |
print(LOG $bpc->timeStamp, |
| 990 |
"Backup canceled on $host ($1)\n"); |
| 991 |
} else { |
| 992 |
$Status{$host}{reason} = "Reason_backup_failed"; |
| 993 |
print(LOG $bpc->timeStamp, |
| 994 |
"Backup failed on $host ($1)\n"); |
| 995 |
} |
| 996 |
} elsif ( $mesg =~ /^restore 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_restore_canceled_by_user" ) { |
| 1003 |
print(LOG $bpc->timeStamp, |
| 1004 |
"Restore canceled on $host ($1)\n"); |
| 1005 |
} else { |
| 1006 |
$Status{$host}{reason} = "Reason_restore_failed"; |
| 1007 |
print(LOG $bpc->timeStamp, |
| 1008 |
"Restore failed on $host ($1)\n"); |
| 1009 |
} |
| 1010 |
} elsif ( $mesg =~ /^archive failed: (.*)/ ) { |
| 1011 |
$Status{$host}{state} = "Status_idle"; |
| 1012 |
$Status{$host}{error} = $1; |
| 1013 |
$Status{$host}{errorTime} = time; |
| 1014 |
$Status{$host}{endTime} = time; |
| 1015 |
if ( $Status{$host}{reason} |
| 1016 |
eq "Reason_archive_canceled_by_user" ) { |
| 1017 |
print(LOG $bpc->timeStamp, |
| 1018 |
"Archive canceled on $host ($1)\n"); |
| 1019 |
} else { |
| 1020 |
$Status{$host}{reason} = "Reason_archive_failed"; |
| 1021 |
print(LOG $bpc->timeStamp, |
| 1022 |
"Archive failed on $host ($1)\n"); |
| 1023 |
} |
| 1024 |
} elsif ( $mesg =~ /^log\s+(.*)/ ) { |
| 1025 |
print(LOG $bpc->timeStamp, "$1\n"); |
| 1026 |
} elsif ( $mesg =~ /^BackupPC_stats (\d+) = (.*)/ ) { |
| 1027 |
my $chunk = int($1 / 16); |
| 1028 |
my @f = split(/,/, $2); |
| 1029 |
$Info{pool}{$f[0]}[$chunk]{FileCnt} += $f[1]; |
| 1030 |
$Info{pool}{$f[0]}[$chunk]{DirCnt} += $f[2]; |
| 1031 |
$Info{pool}{$f[0]}[$chunk]{Kb} += $f[3]; |
| 1032 |
$Info{pool}{$f[0]}[$chunk]{Kb2} += $f[4]; |
| 1033 |
$Info{pool}{$f[0]}[$chunk]{KbRm} += $f[5]; |
| 1034 |
$Info{pool}{$f[0]}[$chunk]{FileCntRm} += $f[6]; |
| 1035 |
$Info{pool}{$f[0]}[$chunk]{FileCntRep} += $f[7]; |
| 1036 |
$Info{pool}{$f[0]}[$chunk]{FileRepMax} = $f[8] |
| 1037 |
if ( $Info{pool}{$f[0]}[$chunk]{FileRepMax} < $f[8] ); |
| 1038 |
$Info{pool}{$f[0]}[$chunk]{FileCntRename} += $f[9]; |
| 1039 |
$Info{pool}{$f[0]}[$chunk]{FileLinkMax} = $f[10] |
| 1040 |
if ( $Info{pool}{$f[0]}[$chunk]{FileLinkMax} < $f[10] ); |
| 1041 |
$Info{pool}{$f[0]}[$chunk]{Time} = time; |
| 1042 |
} elsif ( $mesg =~ /^BackupPC_nightly lock_off/ ) { |
| 1043 |
$BackupPCNightlyLock--; |
| 1044 |
if ( $BackupPCNightlyLock == 0 ) { |
| 1045 |
# |
| 1046 |
# This means the last BackupPC_nightly is done with |
| 1047 |
# the pool clean, so it's to start running regular |
| 1048 |
# backups again. |
| 1049 |
# |
| 1050 |
$RunNightlyWhenIdle = 0; |
| 1051 |
} |
| 1052 |
} elsif ( $mesg =~ /^processState\s+(.+)/ ) { |
| 1053 |
$Jobs{$host}{processState} = $1; |
| 1054 |
} elsif ( $mesg =~ /^link\s+(.+)/ ) { |
| 1055 |
my($h) = $1; |
| 1056 |
$Status{$h}{needLink} = 1; |
| 1057 |
} else { |
| 1058 |
print(LOG $bpc->timeStamp, "$host: $mesg\n"); |
| 1059 |
} |
| 1060 |
} |
| 1061 |
# |
| 1062 |
# shut down the client connection if we read EOF |
| 1063 |
# |
| 1064 |
if ( $nbytes <= 0 ) { |
| 1065 |
close($Jobs{$host}{fh}); |
| 1066 |
vec($FDread, $Jobs{$host}{fn}, 1) = 0; |
| 1067 |
if ( $CmdJob eq $host || $bpc->isAdminJob($host) ) { |
| 1068 |
my $cmd = $Jobs{$host}{cmd}; |
| 1069 |
$cmd =~ s/$BinDir\///g; |
| 1070 |
print(LOG $bpc->timeStamp, "Finished $host ($cmd)\n"); |
| 1071 |
$Status{$host}{state} = "Status_idle"; |
| 1072 |
$Status{$host}{endTime} = time; |
| 1073 |
if ( $cmd =~ /^BackupPC_nightly\s/ ) { |
| 1074 |
$BackupPCNightlyJobs--; |
| 1075 |
#print(LOG $bpc->timeStamp, "BackupPC_nightly done; now" |
| 1076 |
# . " have $BackupPCNightlyJobs running\n"); |
| 1077 |
if ( $BackupPCNightlyJobs <= 0 ) { |
| 1078 |
$BackupPCNightlyJobs = 0; |
| 1079 |
$RunNightlyWhenIdle = 0; |
| 1080 |
$CmdJob = ""; |
| 1081 |
# |
| 1082 |
# Combine the 16 per-directory results |
| 1083 |
# |
| 1084 |
for my $p ( qw(pool cpool) ) { |
| 1085 |
$Info{"${p}FileCnt"} = 0; |
| 1086 |
$Info{"${p}DirCnt"} = 0; |
| 1087 |
$Info{"${p}Kb"} = 0; |
| 1088 |
$Info{"${p}Kb2"} = 0; |
| 1089 |
$Info{"${p}KbRm"} = 0; |
| 1090 |
$Info{"${p}FileCntRm"} = 0; |
| 1091 |
$Info{"${p}FileCntRep"} = 0; |
| 1092 |
$Info{"${p}FileRepMax"} = 0; |
| 1093 |
$Info{"${p}FileCntRename"} = 0; |
| 1094 |
$Info{"${p}FileLinkMax"} = 0; |
| 1095 |
$Info{"${p}Time"} = 0; |
| 1096 |
for ( my $i = 0 ; $i < 16 ; $i++ ) { |
| 1097 |
$Info{"${p}FileCnt"} |
| 1098 |
+= $Info{pool}{$p}[$i]{FileCnt}; |
| 1099 |
$Info{"${p}DirCnt"} |
| 1100 |
+= $Info{pool}{$p}[$i]{DirCnt}; |
| 1101 |
$Info{"${p}Kb"} |
| 1102 |
+= $Info{pool}{$p}[$i]{Kb}; |
| 1103 |
$Info{"${p}Kb2"} |
| 1104 |
+= $Info{pool}{$p}[$i]{Kb2}; |
| 1105 |
$Info{"${p}KbRm"} |
| 1106 |
+= $Info{pool}{$p}[$i]{KbRm}; |
| 1107 |
$Info{"${p}FileCntRm"} |
| 1108 |
+= $Info{pool}{$p}[$i]{FileCntRm}; |
| 1109 |
$Info{"${p}FileCntRep"} |
| 1110 |
+= $Info{pool}{$p}[$i]{FileCntRep}; |
| 1111 |
$Info{"${p}FileRepMax"} |
| 1112 |
= $Info{pool}{$p}[$i]{FileRepMax} |
| 1113 |
if ( $Info{"${p}FileRepMax"} < |
| 1114 |
$Info{pool}{$p}[$i]{FileRepMax} ); |
| 1115 |
$Info{"${p}FileCntRename"} |
| 1116 |
+= $Info{pool}{$p}[$i]{FileCntRename}; |
| 1117 |
$Info{"${p}FileLinkMax"} |
| 1118 |
= $Info{pool}{$p}[$i]{FileLinkMax} |
| 1119 |
if ( $Info{"${p}FileLinkMax"} < |
| 1120 |
$Info{pool}{$p}[$i]{FileLinkMax} ); |
| 1121 |
$Info{"${p}Time"} = $Info{pool}{$p}[$i]{Time} |
| 1122 |
if ( $Info{"${p}Time"} < |
| 1123 |
$Info{pool}{$p}[$i]{Time} ); |
| 1124 |
} |
| 1125 |
printf(LOG "%s%s nightly clean removed %d files of" |
| 1126 |
. " size %.2fGB\n", |
| 1127 |
$bpc->timeStamp, ucfirst($p), |
| 1128 |
$Info{"${p}FileCntRm"}, |
| 1129 |
$Info{"${p}KbRm"} / (1000 * 1024)); |
| 1130 |
printf(LOG "%s%s is %.2fGB, %d files (%d repeated, " |
| 1131 |
. "%d max chain, %d max links), %d directories\n", |
| 1132 |
$bpc->timeStamp, ucfirst($p), |
| 1133 |
$Info{"${p}Kb"} / (1000 * 1024), |
| 1134 |
$Info{"${p}FileCnt"}, $Info{"${p}FileCntRep"}, |
| 1135 |
$Info{"${p}FileRepMax"}, |
| 1136 |
$Info{"${p}FileLinkMax"}, $Info{"${p}DirCnt"}); |
| 1137 |
} |
| 1138 |
} |
| 1139 |
} else { |
| 1140 |
$CmdJob = ""; |
| 1141 |
} |
| 1142 |
} else { |
| 1143 |
# |
| 1144 |
# Queue BackupPC_link to complete the backup |
| 1145 |
# processing for this host. |
| 1146 |
# |
| 1147 |
if ( defined($Status{$host}) |
| 1148 |
&& ($Status{$host}{reason} eq "Reason_backup_done" |
| 1149 |
|| $Status{$host}{needLink}) ) { |
| 1150 |
QueueLink($host); |
| 1151 |
} elsif ( defined($Status{$host}) ) { |
| 1152 |
$Status{$host}{state} = "Status_idle"; |
| 1153 |
} |
| 1154 |
} |
| 1155 |
delete($Jobs{$host}); |
| 1156 |
$Status{$host}{activeJob} = 0 if ( defined($Status{$host}) ); |
| 1157 |
} |
| 1158 |
} |
| 1159 |
# |
| 1160 |
# When we are idle (empty Jobs, CmdQueue, BgQueue, UserQueue) we |
| 1161 |
# do a pass over %Status updating the deadCnt and aliveCnt for |
| 1162 |
# DHCP hosts. The reason we need to do this later is we can't |
| 1163 |
# be sure whether a DHCP host is alive or dead until we have passed |
| 1164 |
# over all the DHCP pool. |
| 1165 |
# |
| 1166 |
return if ( @CmdQueue || @BgQueue || @UserQueue || keys(%Jobs) > 1 ); |
| 1167 |
foreach my $host ( keys(%Status) ) { |
| 1168 |
next if ( $Status{$host}{dhcpCheckCnt} <= 0 ); |
| 1169 |
$Status{$host}{deadCnt} += $Status{$host}{dhcpCheckCnt}; |
| 1170 |
$Status{$host}{dhcpCheckCnt} = 0; |
| 1171 |
if ( $Status{$host}{deadCnt} >= $Conf{BlackoutBadPingLimit} ) { |
| 1172 |
$Status{$host}{aliveCnt} = 0; |
| 1173 |
} |
| 1174 |
} |
| 1175 |
} |
| 1176 |
|
| 1177 |
############################################################################ |
| 1178 |
# Main_Check_Client_Messages($fdRead) |
| 1179 |
# |
| 1180 |
# Check for, and process, any output from our clients. Also checks |
| 1181 |
# for new connections to our SERVER_UNIX and SERVER_INET sockets. |
| 1182 |
############################################################################ |
| 1183 |
sub Main_Check_Client_Messages |
| 1184 |
{ |
| 1185 |
my($fdRead) = @_; |
| 1186 |
foreach my $client ( keys(%Clients) ) { |
| 1187 |
next if ( !vec($fdRead, $Clients{$client}{fn}, 1) ); |
| 1188 |
my($mesg, $host); |
| 1189 |
# |
| 1190 |
# do a last check to make sure there is something to read so |
| 1191 |
# we are absolutely sure we won't block. |
| 1192 |
# |
| 1193 |
vec(my $readMask, $Clients{$client}{fn}, 1) = 1; |
| 1194 |
if ( !select($readMask, undef, undef, 0.0) ) { |
| 1195 |
print(LOG $bpc->timeStamp, "Botch in Main_Check_Client_Messages:" |
| 1196 |
. " nothing to read from $client. Debug dump:\n"); |
| 1197 |
my($dump) = Data::Dumper->new( |
| 1198 |
[ \%Clients, \%Jobs, \$FDread, \$fdRead], |
| 1199 |
[qw(*Clients, *Jobs *FDread, *fdRead)]); |
| 1200 |
$dump->Indent(1); |
| 1201 |
print(LOG $dump->Dump); |
| 1202 |
next; |
| 1203 |
} |
| 1204 |
my $nbytes = sysread($Clients{$client}{fh}, $mesg, 1024); |
| 1205 |
$Clients{$client}{mesg} .= $mesg if ( $nbytes > 0 ); |
| 1206 |
# |
| 1207 |
# Process any complete lines received from this client. |
| 1208 |
# |
| 1209 |
while ( $Clients{$client}{mesg} =~ /(.*?)[\n\r]+(.*)/s ) { |
| 1210 |
my($reply); |
| 1211 |
my $cmd = $1; |
| 1212 |
$Clients{$client}{mesg} = $2; |
| 1213 |
# |
| 1214 |
# Authenticate the message by checking the MD5 digest |
| 1215 |
# |
| 1216 |
my $md5 = Digest::MD5->new; |
| 1217 |
if ( $cmd !~ /^(.{22}) (.*)/ |
| 1218 |
|| ($md5->add($Clients{$client}{seed} |
| 1219 |
. $Clients{$client}{mesgCnt} |
| 1220 |
. $Conf{ServerMesgSecret} . $2), |
| 1221 |
$md5->b64digest ne $1) ) { |
| 1222 |
print(LOG $bpc->timeStamp, "Corrupted message '$cmd' from" |
| 1223 |
. " client '$Clients{$client}{clientName}':" |
| 1224 |
. " shutting down client connection\n"); |
| 1225 |
$nbytes = 0; |
| 1226 |
last; |
| 1227 |
} |
| 1228 |
$Clients{$client}{mesgCnt}++; |
| 1229 |
$cmd = $2; |
| 1230 |
if ( $cmd =~ /^stop (\S+)\s+(\S+)\s+(\S*)/ ) { |
| 1231 |
$host = $1; |
| 1232 |
my $user = $2; |
| 1233 |
my $backoff = $3; |
| 1234 |
$host = $bpc->uriUnesc($host); |
| 1235 |
if ( $CmdJob ne $host && defined($Status{$host}) |
| 1236 |
&& defined($Jobs{$host}) ) { |
| 1237 |
print(LOG $bpc->timeStamp, |
| 1238 |
"Stopping current $Jobs{$host}{type} of $host," |
| 1239 |
. " request by $user (backoff=$backoff)\n"); |
| 1240 |
kill($bpc->sigName2num("INT"), $Jobs{$host}{pid}); |
| 1241 |
# |
| 1242 |
# Don't close the pipe now; wait until the child |
| 1243 |
# really exits later. Otherwise close() will |
| 1244 |
# block until the child has exited. |
| 1245 |
# old code: |
| 1246 |
##vec($FDread, $Jobs{$host}{fn}, 1) = 0; |
| 1247 |
##close($Jobs{$host}{fh}); |
| 1248 |
##delete($Jobs{$host}); |
| 1249 |
|
| 1250 |
$Status{$host}{state} = "Status_idle"; |
| 1251 |
if ( $Jobs{$host}{type} eq "restore" ) { |
| 1252 |
$Status{$host}{reason} |
| 1253 |
= "Reason_restore_canceled_by_user"; |
| 1254 |
} elsif ( $Jobs{$host}{type} eq "archive" ) { |
| 1255 |
$Status{$host}{reason} |
| 1256 |
= "Reason_archive_canceled_by_user"; |
| 1257 |
} else { |
| 1258 |
$Status{$host}{reason} |
| 1259 |
= "Reason_backup_canceled_by_user"; |
| 1260 |
} |
| 1261 |
$Status{$host}{activeJob} = 0; |
| 1262 |
$Status{$host}{startTime} = time; |
| 1263 |
$reply = "ok: $Jobs{$host}{type} of $host canceled"; |
| 1264 |
} elsif ( $BgQueueOn{$host} || $UserQueueOn{$host} ) { |
| 1265 |
print(LOG $bpc->timeStamp, |
| 1266 |
"Stopping pending backup of $host," |
| 1267 |
. " request by $user (backoff=$backoff)\n"); |
| 1268 |
@BgQueue = grep($_->{host} ne $host, @BgQueue); |
| 1269 |
@UserQueue = grep($_->{host} ne $host, @UserQueue); |
| 1270 |
$BgQueueOn{$host} = $UserQueueOn{$host} = 0; |
| 1271 |
$reply = "ok: pending backup of $host canceled"; |
| 1272 |
} else { |
| 1273 |
print(LOG $bpc->timeStamp, |
| 1274 |
"Nothing to do for stop backup of $host," |
| 1275 |
. " request by $user (backoff=$backoff)\n"); |
| 1276 |
$reply = "ok: no backup was pending or running"; |
| 1277 |
} |
| 1278 |
if ( defined($Status{$host}) && $backoff ne "" ) { |
| 1279 |
if ( $backoff > 0 ) { |
| 1280 |
$Status{$host}{backoffTime} = time + $backoff * 3600; |
| 1281 |
} else { |
| 1282 |
delete($Status{$host}{backoffTime}); |
| 1283 |
} |
| 1284 |
} |
| 1285 |
} elsif ( $cmd =~ /^backup all$/ ) { |
| 1286 |
QueueAllPCs(); |
| 1287 |
} elsif ( $cmd =~ /^BackupPC_nightly run$/ ) { |
| 1288 |
$RunNightlyWhenIdle = 1; |
| 1289 |
} elsif ( $cmd =~ /^backup (\S+)\s+(\S+)\s+(\S+)\s+(\S+)/ ) { |
| 1290 |
my $hostIP = $1; |
| 1291 |
$host = $2; |
| 1292 |
my $user = $3; |
| 1293 |
my $doFull = $4; |
| 1294 |
$host = $bpc->uriUnesc($host); |
| 1295 |
$hostIP = $bpc->uriUnesc($hostIP); |
| 1296 |
if ( !defined($Status{$host}) ) { |
| 1297 |
print(LOG $bpc->timeStamp, |
| 1298 |
"User $user requested backup of unknown host" |
| 1299 |
. " $host\n"); |
| 1300 |
$reply = "error: unknown host $host"; |
| 1301 |
} elsif ( defined($Jobs{$host}) |
| 1302 |
&& $Jobs{$host}{type} ne "restore" ) { |
| 1303 |
print(LOG $bpc->timeStamp, |
| 1304 |
"User $user requested backup of $host," |
| 1305 |
. " but one is currently running\n"); |
| 1306 |
$reply = "error: backup of $host is already running"; |
| 1307 |
} else { |
| 1308 |
print(LOG $bpc->timeStamp, |
| 1309 |
"User $user requested backup of $host" |
| 1310 |
. " ($hostIP)\n"); |
| 1311 |
if ( $BgQueueOn{$hostIP} ) { |
| 1312 |
@BgQueue = grep($_->{host} ne $hostIP, @BgQueue); |
| 1313 |
$BgQueueOn{$hostIP} = 0; |
| 1314 |
} |
| 1315 |
if ( $UserQueueOn{$hostIP} ) { |
| 1316 |
@UserQueue = grep($_->{host} ne $hostIP, @UserQueue); |
| 1317 |
$UserQueueOn{$hostIP} = 0; |
| 1318 |
} |
| 1319 |
unshift(@UserQueue, { |
| 1320 |
host => $hostIP, |
| 1321 |
user => $user, |
| 1322 |
reqTime => time, |
| 1323 |
doFull => $doFull, |
| 1324 |
userReq => 1, |
| 1325 |
dhcp => $hostIP eq $host ? 0 : 1, |
| 1326 |
}); |
| 1327 |
$UserQueueOn{$hostIP} = 1; |
| 1328 |
$reply = "ok: requested backup of $host"; |
| 1329 |
} |
| 1330 |
} elsif ( $cmd =~ /^archive (\S+)\s+(\S+)\s+(\S+)/ ) { |
| 1331 |
my $user = $1; |
| 1332 |
my $archivehost = $2; |
| 1333 |
my $reqFileName = $3; |
| 1334 |
$host = $bpc->uriUnesc($archivehost); |
| 1335 |
if ( !defined($Status{$host}) ) { |
| 1336 |
print(LOG $bpc->timeStamp, |
| 1337 |
"User $user requested archive of unknown archive host" |
| 1338 |
. " $host"); |
| 1339 |
$reply = "archive error: unknown archive host $host"; |
| 1340 |
} else { |
| 1341 |
print(LOG $bpc->timeStamp, |
| 1342 |
"User $user requested archive on $host" |
| 1343 |
. " ($host)\n"); |
| 1344 |
if ( defined($Jobs{$host}) ) { |
| 1345 |
$reply = "Archive currently running on $host, please try later"; |
| 1346 |
} else { |
| 1347 |
unshift(@UserQueue, { |
| 1348 |
host => $host, |
| 1349 |
hostIP => $user, |
| 1350 |
reqFileName => $reqFileName, |
| 1351 |
reqTime => time, |
| 1352 |
dhcp => 0, |
| 1353 |
archive => 1, |
| 1354 |
userReq => 1, |
| 1355 |
}); |
| 1356 |
$UserQueueOn{$host} = 1; |
| 1357 |
$reply = "ok: requested archive on $host"; |
| 1358 |
} |
| 1359 |
} |
| 1360 |
} elsif ( $cmd =~ /^restore (\S+)\s+(\S+)\s+(\S+)\s+(\S+)/ ) { |
| 1361 |
my $hostIP = $1; |
| 1362 |
$host = $2; |
| 1363 |
my $user = $3; |
| 1364 |
my $reqFileName = $4; |
| 1365 |
$host = $bpc->uriUnesc($host); |
| 1366 |
$hostIP = $bpc->uriUnesc($hostIP); |
| 1367 |
if ( !defined($Status{$host}) ) { |
| 1368 |
print(LOG $bpc->timeStamp, |
| 1369 |
"User $user requested restore to unknown host" |
| 1370 |
. " $host"); |
| 1371 |
$reply = "restore error: unknown host $host"; |
| 1372 |
} else { |
| 1373 |
print(LOG $bpc->timeStamp, |
| 1374 |
"User $user requested restore to $host" |
| 1375 |
. " ($hostIP)\n"); |
| 1376 |
unshift(@UserQueue, { |
| 1377 |
host => $host, |
| 1378 |
hostIP => $hostIP, |
| 1379 |
reqFileName => $reqFileName, |
| 1380 |
reqTime => time, |
| 1381 |
dhcp => 0, |
| 1382 |
restore => 1, |
| 1383 |
userReq => 1, |
| 1384 |
}); |
| 1385 |
$UserQueueOn{$host} = 1; |
| 1386 |
if ( defined($Jobs{$host}) ) { |
| 1387 |
$reply = "ok: requested restore of $host, but a" |
| 1388 |
. " job is currently running," |
| 1389 |
. " so this request will start later"; |
| 1390 |
} else { |
| 1391 |
$reply = "ok: requested restore of $host"; |
| 1392 |
} |
| 1393 |
} |
| 1394 |
} elsif ( $cmd =~ /^status\s*(.*)/ ) { |
| 1395 |
my($args) = $1; |
| 1396 |
my($dump, @values, @names); |
| 1397 |
foreach my $type ( split(/\s+/, $args) ) { |
| 1398 |
if ( $type =~ /^queues/ ) { |
| 1399 |
push(@values, \@BgQueue, \@UserQueue, \@CmdQueue); |
| 1400 |
push(@names, qw(*BgQueue *UserQueue *CmdQueue)); |
| 1401 |
} elsif ( $type =~ /^jobs/ ) { |
| 1402 |
push(@values, \%Jobs); |
| 1403 |
push(@names, qw(*Jobs)); |
| 1404 |
} elsif ( $type =~ /^queueLen/ ) { |
| 1405 |
push(@values, { |
| 1406 |
BgQueue => scalar(@BgQueue), |
| 1407 |
UserQueue => scalar(@UserQueue), |
| 1408 |
CmdQueue => scalar(@CmdQueue), |
| 1409 |
}); |
| 1410 |
push(@names, qw(*QueueLen)); |
| 1411 |
} elsif ( $type =~ /^info/ ) { |
| 1412 |
push(@values, \%Info); |
| 1413 |
push(@names, qw(*Info)); |
| 1414 |
} elsif ( $type =~ /^hosts/ ) { |
| 1415 |
push(@values, \%Status); |
| 1416 |
push(@names, qw(*Status)); |
| 1417 |
} elsif ( $type =~ /^host\((.*)\)/ ) { |
| 1418 |
my $h = $bpc->uriUnesc($1); |
| 1419 |
if ( defined($Status{$h}) ) { |
| 1420 |
push(@values, { |
| 1421 |
%{$Status{$h}}, |
| 1422 |
BgQueueOn => $BgQueueOn{$h}, |
| 1423 |
UserQueueOn => $UserQueueOn{$h}, |
| 1424 |
CmdQueueOn => $CmdQueueOn{$h}, |
| 1425 |
}); |
| 1426 |
push(@names, qw(*StatusHost)); |
| 1427 |
} else { |
| 1428 |
print(LOG $bpc->timeStamp, |
| 1429 |
"Unknown host $h for status request\n"); |
| 1430 |
} |
| 1431 |
} else { |
| 1432 |
print(LOG $bpc->timeStamp, |
| 1433 |
"Unknown status request $type\n"); |
| 1434 |
} |
| 1435 |
} |
| 1436 |
$dump = Data::Dumper->new(\@values, \@names); |
| 1437 |
$dump->Indent(0); |
| 1438 |
$reply = $dump->Dump; |
| 1439 |
} elsif ( $cmd =~ /^link\s+(.+)/ ) { |
| 1440 |
my($host) = $1; |
| 1441 |
$host = $bpc->uriUnesc($host); |
| 1442 |
QueueLink($host); |
| 1443 |
} elsif ( $cmd =~ /^log\s+(.*)/ ) { |
| 1444 |
print(LOG $bpc->timeStamp, "$1\n"); |
| 1445 |
} elsif ( $cmd =~ /^server\s+(\w+)/ ) { |
| 1446 |
my($type) = $1; |
| 1447 |
if ( $type eq 'reload' ) { |
| 1448 |
ServerReload("Reloading config/host files via CGI request"); |
| 1449 |
} elsif ( $type eq 'shutdown' ) { |
| 1450 |
$reply = "Shutting down...\n"; |
| 1451 |
syswrite($Clients{$client}{fh}, $reply, length($reply)); |
| 1452 |
ServerShutdown("Server shutting down..."); |
| 1453 |
} |
| 1454 |
} elsif ( $cmd =~ /^quit/ || $cmd =~ /^exit/ ) { |
| 1455 |
$nbytes = 0; |
| 1456 |
last; |
| 1457 |
} else { |
| 1458 |
print(LOG $bpc->timeStamp, "Unknown command $cmd\n"); |
| 1459 |
$reply = "error: bad command $cmd"; |
| 1460 |
} |
| 1461 |
# |
| 1462 |
# send a reply to the client, at a minimum "ok\n". |
| 1463 |
# |
| 1464 |
$reply = "ok" if ( $reply eq "" ); |
| 1465 |
$reply .= "\n"; |
| 1466 |
syswrite($Clients{$client}{fh}, $reply, length($reply)); |
| 1467 |
} |
| 1468 |
# |
| 1469 |
# Detect possible denial-of-service attack from sending a huge line |
| 1470 |
# (ie: never terminated). 32K seems to be plenty big enough as |
| 1471 |
# a limit. |
| 1472 |
# |
| 1473 |
if ( length($Clients{$client}{mesg}) > 32 * 1024 ) { |
| 1474 |
print(LOG $bpc->timeStamp, "Line too long from client" |
| 1475 |
. " '$Clients{$client}{clientName}':" |
| 1476 |
. " shutting down client connection\n"); |
| 1477 |
$nbytes = 0; |
| 1478 |
} |
| 1479 |
# |
| 1480 |
# Shut down the client connection if we read EOF |
| 1481 |
# |
| 1482 |
if ( $nbytes <= 0 ) { |
| 1483 |
close($Clients{$client}{fh}); |
| 1484 |
vec($FDread, $Clients{$client}{fn}, 1) = 0; |
| 1485 |
delete($Clients{$client}); |
| 1486 |
} |
| 1487 |
} |
| 1488 |
# |
| 1489 |
# Accept any new connections on each of our listen sockets |
| 1490 |
# |
| 1491 |
if ( vec($fdRead, fileno(SERVER_UNIX), 1) ) { |
| 1492 |
local(*CLIENT); |
| 1493 |
my $paddr = accept(CLIENT, SERVER_UNIX); |
| 1494 |
$ClientConnCnt++; |
| 1495 |
$Clients{$ClientConnCnt}{clientName} = "unix socket"; |
| 1496 |
$Clients{$ClientConnCnt}{mesg} = ""; |
| 1497 |
$Clients{$ClientConnCnt}{fh} = *CLIENT; |
| 1498 |
$Clients{$ClientConnCnt}{fn} = fileno(CLIENT); |
| 1499 |
vec($FDread, $Clients{$ClientConnCnt}{fn}, 1) = 1; |
| 1500 |
# |
| 1501 |
# Generate and send unique seed for MD5 digests to avoid |
| 1502 |
# replay attacks. See BackupPC::Lib::ServerMesg(). |
| 1503 |
# |
| 1504 |
my $seed = time . ",$ClientConnCnt,$$,0\n"; |
| 1505 |
$Clients{$ClientConnCnt}{seed} = $seed; |
| 1506 |
$Clients{$ClientConnCnt}{mesgCnt} = 0; |
| 1507 |
syswrite($Clients{$ClientConnCnt}{fh}, $seed, length($seed)); |
| 1508 |
} |
| 1509 |
if ( $ServerInetPort > 0 && vec($fdRead, fileno(SERVER_INET), 1) ) { |
| 1510 |
local(*CLIENT); |
| 1511 |
my $paddr = accept(CLIENT, SERVER_INET); |
| 1512 |
my($port,$iaddr) = sockaddr_in($paddr); |
| 1513 |
my $name = gethostbyaddr($iaddr, AF_INET); |
| 1514 |
$ClientConnCnt++; |
| 1515 |
$Clients{$ClientConnCnt}{mesg} = ""; |
| 1516 |
$Clients{$ClientConnCnt}{fh} = *CLIENT; |
| 1517 |
$Clients{$ClientConnCnt}{fn} = fileno(CLIENT); |
| 1518 |
$Clients{$ClientConnCnt}{clientName} = "$name:$port"; |
| 1519 |
vec($FDread, $Clients{$ClientConnCnt}{fn}, 1) = 1; |
| 1520 |
# |
| 1521 |
# Generate and send unique seed for MD5 digests to avoid |
| 1522 |
# replay attacks. See BackupPC::Lib::ServerMesg(). |
| 1523 |
# |
| 1524 |
my $seed = time . ",$ClientConnCnt,$$,$port\n"; |
| 1525 |
$Clients{$ClientConnCnt}{seed} = $seed; |
| 1526 |
$Clients{$ClientConnCnt}{mesgCnt} = 0; |
| 1527 |
syswrite($Clients{$ClientConnCnt}{fh}, $seed, length($seed)); |
| 1528 |
} |
| 1529 |
} |
| 1530 |
|
| 1531 |
########################################################################### |
| 1532 |
# Miscellaneous subroutines |
| 1533 |
########################################################################### |
| 1534 |
|
| 1535 |
# |
| 1536 |
# Write the current status to $TopDir/log/status.pl |
| 1537 |
# |
| 1538 |
sub StatusWrite |
| 1539 |
{ |
| 1540 |
my($dump) = Data::Dumper->new( |
| 1541 |
[ \%Info, \%Status], |
| 1542 |
[qw(*Info *Status)]); |
| 1543 |
$dump->Indent(1); |
| 1544 |
if ( open(STATUS, ">", "$TopDir/log/status.pl") ) { |
| 1545 |
print(STATUS $dump->Dump); |
| 1546 |
close(STATUS); |
| 1547 |
} |
| 1548 |
} |
| 1549 |
|
| 1550 |
# |
| 1551 |
# Compare function for host sort. Hosts with errors go first, |
| 1552 |
# sorted with the oldest errors first. The remaining hosts |
| 1553 |
# are sorted so that those with the oldest backups go first. |
| 1554 |
# |
| 1555 |
sub HostSortCompare |
| 1556 |
{ |
| 1557 |
# |
| 1558 |
# Hosts with errors go before hosts without errors |
| 1559 |
# |
| 1560 |
return -1 if ( $Status{$a}{error} ne "" && $Status{$b}{error} eq "" ); |
| 1561 |
|
| 1562 |
# |
| 1563 |
# Hosts with no errors go after hosts with errors |
| 1564 |
# |
| 1565 |
|
| 1566 |
return 1 if ( $Status{$a}{error} eq "" && $Status{$b}{error} ne "" ); |
| 1567 |
|
| 1568 |
# |
| 1569 |
# hosts with the older last good backups sort earlier |
| 1570 |
# |
| 1571 |
my $r = $Status{$a}{lastGoodBackupTime} <=> $Status{$b}{lastGoodBackupTime}; |
| 1572 |
return $r if ( $r ); |
| 1573 |
|
| 1574 |
# |
| 1575 |
# Finally, just sort based on host name |
| 1576 |
# |
| 1577 |
return $a cmp $b; |
| 1578 |
} |
| 1579 |
|
| 1580 |
|
| 1581 |
# |
| 1582 |
# Queue all the hosts for backup. This means queuing all the fixed |
| 1583 |
# ip hosts and all the dhcp address ranges. We also additionally |
| 1584 |
# queue the dhcp hosts with a -e flag to check for expired dumps. |
| 1585 |
# |
| 1586 |
sub QueueAllPCs |
| 1587 |
{ |
| 1588 |
foreach my $host ( sort(HostSortCompare keys(%$Hosts)) ) { |
| 1589 |
delete($Status{$host}{backoffTime}) |
| 1590 |
if ( defined($Status{$host}{backoffTime}) |
| 1591 |
&& $Status{$host}{backoffTime} < time ); |
| 1592 |
next if ( defined($Jobs{$host}) |
| 1593 |
|| $BgQueueOn{$host} |
| 1594 |
|| $UserQueueOn{$host} |
| 1595 |
|| $CmdQueueOn{$host} ); |
| 1596 |
if ( $Hosts->{$host}{dhcp} ) { |
| 1597 |
$Status{$host}{dhcpCheckCnt}++; |
| 1598 |
if ( $RunNightlyWhenIdle ) { |
| 1599 |
# |
| 1600 |
# Once per night queue a check for DHCP hosts that just |
| 1601 |
# checks for expired dumps. We need to do this to handle |
| 1602 |
# the case when a DHCP host has not been on the network for |
| 1603 |
# a long time, and some of the old dumps need to be expired. |
| 1604 |
# Normally expiry checks are done by BackupPC_dump only |
| 1605 |
# after the DHCP hosts has been detected on the network. |
| 1606 |
# |
| 1607 |
unshift(@BgQueue, |
| 1608 |
{host => $host, user => "BackupPC", reqTime => time, |
| 1609 |
dhcp => 0, dumpExpire => 1}); |
| 1610 |
$BgQueueOn{$host} = 1; |
| 1611 |
} |
| 1612 |
} else { |
| 1613 |
# |
| 1614 |
# this is a fixed ip host: queue it |
| 1615 |
# |
| 1616 |
unshift(@BgQueue, |
| 1617 |
{host => $host, user => "BackupPC", reqTime => time, |
| 1618 |
dhcp => $Hosts->{$host}{dhcp}}); |
| 1619 |
$BgQueueOn{$host} = 1; |
| 1620 |
} |
| 1621 |
} |
| 1622 |
foreach my $dhcp ( @{$Conf{DHCPAddressRanges}} ) { |
| 1623 |
for ( my $i = $dhcp->{first} ; $i <= $dhcp->{last} ; $i++ ) { |
| 1624 |
my $ipAddr = "$dhcp->{ipAddrBase}.$i"; |
| 1625 |
next if ( defined($Jobs{$ipAddr}) |
| 1626 |
|| $BgQueueOn{$ipAddr} |
| 1627 |
|| $UserQueueOn{$ipAddr} |
| 1628 |
|| $CmdQueueOn{$ipAddr} ); |
| 1629 |
# |
| 1630 |
# this is a potential dhcp ip address (we don't know the |
| 1631 |
# host name yet): queue it |
| 1632 |
# |
| 1633 |
unshift(@BgQueue, |
| 1634 |
{host => $ipAddr, user => "BackupPC", reqTime => time, |
| 1635 |
dhcp => 1}); |
| 1636 |
$BgQueueOn{$ipAddr} = 1; |
| 1637 |
} |
| 1638 |
} |
| 1639 |
} |
| 1640 |
|
| 1641 |
# |
| 1642 |
# Queue a BackupPC_link for the given host |
| 1643 |
# |
| 1644 |
sub QueueLink |
| 1645 |
{ |
| 1646 |
my($host) = @_; |
| 1647 |
|
| 1648 |
return if ( $CmdQueueOn{$host} ); |
| 1649 |
$Status{$host}{state} = "Status_link_pending"; |
| 1650 |
$Status{$host}{needLink} = 0; |
| 1651 |
unshift(@CmdQueue, { |
| 1652 |
host => $host, |
| 1653 |
user => "BackupPC", |
| 1654 |
reqTime => time, |
| 1655 |
cmd => ["$BinDir/BackupPC_link", $host], |
| 1656 |
}); |
| 1657 |
$CmdQueueOn{$host} = 1; |
| 1658 |
} |
| 1659 |
|
| 1660 |
# |
| 1661 |
# Read the hosts file, and update Status if any hosts have been |
| 1662 |
# added or deleted. We also track the mtime so the only need to |
| 1663 |
# update the hosts file on changes. |
| 1664 |
# |
| 1665 |
# This function is called at startup, SIGHUP, and on each wakeup. |
| 1666 |
# It returns 1 on success and undef on failure. |
| 1667 |
# |
| 1668 |
sub HostsUpdate |
| 1669 |
{ |
| 1670 |
my($force) = @_; |
| 1671 |
my $newHosts; |
| 1672 |
# |
| 1673 |
# Nothing to do if we already have the current hosts file |
| 1674 |
# |
| 1675 |
return 1 if ( !$force && defined($Hosts) |
| 1676 |
&& $Info{HostsModTime} == $bpc->HostsMTime() ); |
| 1677 |
if ( !defined($newHosts = $bpc->HostInfoRead()) ) { |
| 1678 |
print(LOG $bpc->timeStamp, "Can't read hosts file!\n"); |
| 1679 |
return; |
| 1680 |
} |
| 1681 |
print(LOG $bpc->timeStamp, "Reading hosts file\n"); |
| 1682 |
$Hosts = $newHosts; |
| 1683 |
$Info{HostsModTime} = $bpc->HostsMTime(); |
| 1684 |
# |
| 1685 |
# Now update %Status in case any hosts have been added or deleted |
| 1686 |
# |
| 1687 |
foreach my $host ( sort(keys(%$Hosts)) ) { |
| 1688 |
next if ( defined($Status{$host}) ); |
| 1689 |
$Status{$host}{state} = "Status_idle"; |
| 1690 |
print(LOG $bpc->timeStamp, "Added host $host to backup list\n"); |
| 1691 |
} |
| 1692 |
foreach my $host ( sort(keys(%Status)) ) { |
| 1693 |
next if ( $host eq $bpc->trashJob |
| 1694 |
|| $bpc->isAdminJob($host) |
| 1695 |
|| defined($Hosts->{$host}) |
| 1696 |
|| defined($Jobs{$host}) |
| 1697 |
|| $BgQueueOn{$host} |
| 1698 |
|| $UserQueueOn{$host} |
| 1699 |
|| $CmdQueueOn{$host} ); |
| 1700 |
print(LOG $bpc->timeStamp, "Deleted host $host from backup list\n"); |
| 1701 |
delete($Status{$host}); |
| 1702 |
} |
| 1703 |
return 1; |
| 1704 |
} |
| 1705 |
|
| 1706 |
# |
| 1707 |
# Remember the signal name for later processing |
| 1708 |
# |
| 1709 |
sub catch_signal |
| 1710 |
{ |
| 1711 |
if ( $SigName ) { |
| 1712 |
$SigName = shift; |
| 1713 |
foreach my $host ( keys(%Jobs) ) { |
| 1714 |
kill($bpc->sigName2num("INT"), $Jobs{$host}{pid}); |
| 1715 |
} |
| 1716 |
# |
| 1717 |
# In case we are inside the exit handler, reopen the log file |
| 1718 |
# |
| 1719 |
close(LOG); |
| 1720 |
LogFileOpen(); |
| 1721 |
print(LOG "Fatal error: unhandled signal $SigName\n"); |
| 1722 |
unlink("$TopDir/log/BackupPC.pid"); |
| 1723 |
confess("Got new signal $SigName... quitting\n"); |
| 1724 |
} else { |
| 1725 |
$SigName = shift; |
| 1726 |
} |
| 1727 |
} |
| 1728 |
|
| 1729 |
# |
| 1730 |
# Open the log file and point STDOUT and STDERR there too |
| 1731 |
# |
| 1732 |
sub LogFileOpen |
| 1733 |
{ |
| 1734 |
mkpath("$TopDir/log", 0, 0777) if ( !-d "$TopDir/log" ); |
| 1735 |
open(LOG, ">>$TopDir/log/LOG") |
| 1736 |
|| die("Can't create LOG file $TopDir/log/LOG"); |
| 1737 |
close(STDOUT); |
| 1738 |
close(STDERR); |
| 1739 |
open(STDOUT, ">&LOG"); |
| 1740 |
open(STDERR, ">&LOG"); |
| 1741 |
select(LOG); $| = 1; |
| 1742 |
select(STDERR); $| = 1; |
| 1743 |
select(STDOUT); $| = 1; |
| 1744 |
} |
| 1745 |
|
| 1746 |
# |
| 1747 |
# Initialize the unix-domain and internet-domain sockets that |
| 1748 |
# we listen to for client connections (from the CGI script and |
| 1749 |
# some of the BackupPC sub-programs). |
| 1750 |
# |
| 1751 |
sub ServerSocketInit |
| 1752 |
{ |
| 1753 |
if ( !defined(fileno(SERVER_UNIX)) ) { |
| 1754 |
# |
| 1755 |
# one-time only: initialize unix-domain socket |
| 1756 |
# |
| 1757 |
if ( !socket(SERVER_UNIX, PF_UNIX, SOCK_STREAM, 0) ) { |
| 1758 |
print(LOG $bpc->timeStamp, "unix socket() failed: $!\n"); |
| 1759 |
exit(1); |
| 1760 |
} |
| 1761 |
my $sockFile = "$TopDir/log/BackupPC.sock"; |
| 1762 |
unlink($sockFile); |
| 1763 |
if ( !bind(SERVER_UNIX, sockaddr_un($sockFile)) ) { |
| 1764 |
print(LOG $bpc->timeStamp, "unix bind() failed: $!\n"); |
| 1765 |
exit(1); |
| 1766 |
} |
| 1767 |
if ( !listen(SERVER_UNIX, SOMAXCONN) ) { |
| 1768 |
print(LOG $bpc->timeStamp, "unix listen() failed: $!\n"); |
| 1769 |
exit(1); |
| 1770 |
} |
| 1771 |
vec($FDread, fileno(SERVER_UNIX), 1) = 1; |
| 1772 |
} |
| 1773 |
return if ( $ServerInetPort == $Conf{ServerPort} ); |
| 1774 |
if ( $ServerInetPort > 0 ) { |
| 1775 |
vec($FDread, fileno(SERVER_INET), 1) = 0; |
| 1776 |
close(SERVER_INET); |
| 1777 |
$ServerInetPort = -1; |
| 1778 |
} |
| 1779 |
if ( $Conf{ServerPort} > 0 ) { |
| 1780 |
# |
| 1781 |
# Setup a socket to listen on $Conf{ServerPort} |
| 1782 |
# |
| 1783 |
my $proto = getprotobyname('tcp'); |
| 1784 |
if ( !socket(SERVER_INET, PF_INET, SOCK_STREAM, $proto) ) { |
| 1785 |
print(LOG $bpc->timeStamp, "inet socket() failed: $!\n"); |
| 1786 |
exit(1); |
| 1787 |
} |
| 1788 |
if ( !setsockopt(SERVER_INET, SOL_SOCKET, SO_REUSEADDR, pack("l",1)) ) { |
| 1789 |
print(LOG $bpc->timeStamp, "setsockopt() failed: $!\n"); |
| 1790 |
exit(1); |
| 1791 |
} |
| 1792 |
if ( !bind(SERVER_INET, sockaddr_in($Conf{ServerPort}, INADDR_ANY)) ) { |
| 1793 |
print(LOG $bpc->timeStamp, "inet bind() failed: $!\n"); |
| 1794 |
exit(1); |
| 1795 |
} |
| 1796 |
if ( !listen(SERVER_INET, SOMAXCONN) ) { |
| 1797 |
print(LOG $bpc->timeStamp, "inet listen() failed: $!\n"); |
| 1798 |
exit(1); |
| 1799 |
} |
| 1800 |
vec($FDread, fileno(SERVER_INET), 1) = 1; |
| 1801 |
$ServerInetPort = $Conf{ServerPort}; |
| 1802 |
} |
| 1803 |
} |
| 1804 |
|
| 1805 |
# |
| 1806 |
# Reload the server. Used by Main_Process_Signal when $SigName eq "HUP" |
| 1807 |
# or when the command "server reload" is received. |
| 1808 |
# |
| 1809 |
sub ServerReload |
| 1810 |
{ |
| 1811 |
my($mesg) = @_; |
| 1812 |
$mesg = $bpc->ConfigRead() || $mesg; |
| 1813 |
print(LOG $bpc->timeStamp, "$mesg\n"); |
| 1814 |
$Info{ConfigModTime} = $bpc->ConfigMTime(); |
| 1815 |
%Conf = $bpc->Conf(); |
| 1816 |
umask($Conf{UmaskMode}); |
| 1817 |
ServerSocketInit(); |
| 1818 |
HostsUpdate(0); |
| 1819 |
$NextWakeup = 0; |
| 1820 |
$Info{ConfigLTime} = time; |
| 1821 |
} |
| 1822 |
|
| 1823 |
# |
| 1824 |
# Gracefully shutdown the server. Used by Main_Process_Signal when |
| 1825 |
# $SigName ne "" && $SigName ne "HUP" or when the command |
| 1826 |
# "server shutdown" is received. |
| 1827 |
# |
| 1828 |
sub ServerShutdown |
| 1829 |
{ |
| 1830 |
my($mesg) = @_; |
| 1831 |
print(LOG $bpc->timeStamp, "$mesg\n"); |
| 1832 |
if ( keys(%Jobs) ) { |
| 1833 |
foreach my $host ( keys(%Jobs) ) { |
| 1834 |
kill($bpc->sigName2num("INT"), $Jobs{$host}{pid}); |
| 1835 |
} |
| 1836 |
sleep(1); |
| 1837 |
foreach my $host ( keys(%Jobs) ) { |
| 1838 |
kill($bpc->sigName2num("KILL"), $Jobs{$host}{pid}); |
| 1839 |
} |
| 1840 |
%Jobs = (); |
| 1841 |
} |
| 1842 |
delete($Info{pid}); |
| 1843 |
StatusWrite(); |
| 1844 |
unlink("$TopDir/log/BackupPC.pid"); |
| 1845 |
exit(1); |
| 1846 |
} |
| 1847 |
|
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