[BackupPC.git] / conf / config.pl

#============================================================= -*-perl-*-
#
# Configuration file for BackupPC.
#
# DESCRIPTION
#
#   This is the main configuration file for BackupPC.
#
#   This file must be valid perl source, so make sure the punctuation,
#   quotes, and other syntax are valid.
#
#   This file is read by BackupPC at startup, when a HUP (-1) signal
#   is sent to BackupPC and also at each wakeup time whenever the
#   modification time of this file changes.
#
#   The configuration parameters are divided into four general groups.
#   The first group (general server configuration) provides general
#   configuration for BackupPC.  The next two groups describe what
#   to backup, when to do it, and how long to keep it.  The fourth
#   group are settings for the CGI http interface.
#
#   Configuration settings can also be specified on a per-PC basis.
#   Simply put the relevant settings in a config.pl file in the
#   PC's backup directory (ie: in __TOPDIR__/pc/hostName).
#   All configuration settings in the second, third and fourth
#   groups can be overridden by the per-PC config.pl file.
#
# AUTHOR
#   Craig Barratt  <cbarratt@users.sourceforge.net>
#
# COPYRIGHT
#   Copyright (C) 2001-2003  Craig Barratt
#
#   See http://backuppc.sourceforge.net.
#
#========================================================================

###########################################################################
# General server configuration
###########################################################################
#
# Host name on which the BackupPC server is running.
#
$Conf{ServerHost} = '';

#
# TCP port number on which the BackupPC server listens for and accepts
# connections.  Normally this should be disabled (set to -1).  The TCP
# port is only needed if apache runs on a different machine from BackupPC.
# In that case, set this to any spare port number over 1024 (eg: 2359).
# If you enable the TCP port, make sure you set $Conf{ServerMesgSecret}
# too!
#
$Conf{ServerPort} = -1;

#
# Shared secret to make the TCP port secure.  Set this to a hard to guess
# string if you enable the TCP port (ie: $Conf{ServerPort} > 0).
#
# To avoid possible attacks via the TCP socket interface, every client
# message is protected by an MD5 digest. The MD5 digest includes four
# items:
#   - a seed that is sent to the client when the connection opens
#   - a sequence number that increments for each message
#   - a shared secret that is stored in $Conf{ServerMesgSecret}
#   - the message itself.
#
# The message is sent in plain text preceded by the MD5 digest.  A
# snooper can see the plain-text seed sent by BackupPC and plain-text
# message from the client, but cannot construct a valid MD5 digest since
# the secret $Conf{ServerMesgSecret} is unknown.  A replay attack is
# not possible since the seed changes on a per-connection and
# per-message basis.
#
$Conf{ServerMesgSecret} = '';

#
# PATH setting for BackupPC.  An explicit value is necessary
# for taint mode.  Value shouldn't matter too much since
# all execs use explicit paths.  However, taint mode in perl
# will complain if this directory is world writable.
#
$Conf{MyPath} = '/bin';

#
# Permission mask for directories and files created by BackupPC.
# Default value prevents any access from group other, and prevents
# group write.
#
$Conf{UmaskMode} = 027;

#
# Times at which we wake up, check all the PCs, and schedule necessary
# backups.  Times are measured in hours since midnight.  Can be
# fractional if necessary (eg: 4.25 means 4:15am).
#
# If the hosts you are backing up are always connected to the network
# you might have only one or two wakeups each night.  This will keep
# the backup activity after hours.  On the other hand, if you are backing
# up laptops that are only intermittently connected to the network you
# will want to have frequent wakeups (eg: hourly) to maximized the chance
# that each laptop is backed up.
#
# Examples:
#     $Conf{WakeupSchedule} = [22.5];         # once per day at 10:30 pm.
#     $Conf{WakeupSchedule} = [1..23];        # every hour except midnight
#     $Conf{WakeupSchedule} = [2,4,6,8,10,12,14,16,18,20,22];  # every 2 hours
#
# The default value is every hour except midnight.
#
$Conf{WakeupSchedule} = [1..23];

#
# Maximum number of simultaneous backups to run.  If there
# are no user backup requests then this is the maximum number
# of simultaneous backups.
#
$Conf{MaxBackups} = 4;

#
# Additional number of simultaneous backups that users can run.
# As many as $Conf{MaxBackups} + $Conf{MaxUserBackups} requests can
# run at the same time.
#
$Conf{MaxUserBackups} = 4;

#
# Maximum number of pending link commands. New backups will only be
# started if there are no more than $Conf{MaxPendingCmds} plus
# $Conf{MaxBackups} number of pending link commands, plus running jobs.
# This limit is to make sure BackupPC doesn't fall too far behind in
# running BackupPC_link commands.
#
$Conf{MaxPendingCmds} = 10;

#
# Maximum number of log files we keep around in log directory.
# These files are aged nightly.  A setting of 14 means the log
# directory will contain about 2 weeks of old log files, in
# particular at most the files LOG, LOG.0, LOG.1, ... LOG.13
# (except today's LOG, these files will have a .z extension if
# compression is on).
#
# If you decrease this number after BackupPC has been running for a
# while you will have to manually remove the older log files.
#
$Conf{MaxOldLogFiles} = 14;

#
# Full path to the df command.  Security caution: normal users
# should not allowed to write to this file or directory.
#
$Conf{DfPath} = '/bin/df';

#
# Command to run df.  The following variables are substituted at run-time:
#
#   $dfPath      path to df ($Conf{DfPath})
#   $topDir      top-level BackupPC data directory
#
$Conf{DfCmd} = '$dfPath $topDir';

#
# Maximum threshold for disk utilization on the __TOPDIR__ filesystem.
# If the output from $Conf{DfPath} reports a percentage larger than
# this number then no new regularly scheduled backups will be run.
# However, user requested backups (which are usually incremental and
# tend to be small) are still performed, independent of disk usage.
# Also, currently running backups will not be terminated when the disk
# usage exceeds this number.
#
$Conf{DfMaxUsagePct} = 95;

#
# How long BackupPC_trashClean sleeps in seconds between each check
# of the trash directory.  Once every 5 minutes should be reasonable.
#
$Conf{TrashCleanSleepSec} = 300;

#
# List of DHCP address ranges we search looking for PCs to backup.
# This is an array of hashes for each class C address range.
# This is only needed if hosts in the conf/hosts file have the
# dhcp flag set.
#
# Examples:
#    # to specify 192.10.10.20 to 192.10.10.250 as the DHCP address pool
#    $Conf{DHCPAddressRanges} = [
#        {
#            ipAddrBase => '192.10.10',
#            first => 20,
#            last  => 250,
#        },
#    ];
#    # to specify two pools (192.10.10.20-250 and 192.10.11.10-50)
#    $Conf{DHCPAddressRanges} = [
#        {
#            ipAddrBase => '192.10.10',
#            first => 20,
#            last  => 250,
#        },
#        {
#            ipAddrBase => '192.10.11',
#            first => 10,
#            last  => 50,
#        },
#    ];
#
$Conf{DHCPAddressRanges} = [];

#
# These configuration settings aren't used by BackupPC, but simply
# remember a few settings used by configure.pl during installation.
# These are used by configure.pl when upgrading to new versions of
# BackupPC.
#
$Conf{BackupPCUser} = '';
$Conf{CgiDir}       = '';
$Conf{InstallDir}   = '';

#
# Whether BackupPC and the CGI script BackupPC_Admin verify that they
# are really running as user $Conf{BackupPCUser}.  If this flag is set
# and the effective user id (euid) differs from $Conf{BackupPCUser}
# then both scripts exit with an error.  This catches cases where
# BackupPC might be accidently started as root or the wrong user,
# or if the CGI script is not installed correctly.
#
$Conf{BackupPCUserVerify} = 1;

#
# Maximum number of hardlinks supported by the $TopDir file system
# that BackupPC uses.  Most linux or unix file systems should support
# at least 32000 hardlinks per file, or 64K in other cases.  If a pool
# file already has this number of hardlinks, a new pool file is created
# so that new hardlinks can be accommodated.  This limit will only
# be hit if an identical file appears at least this number of times
# across all the backups.
#
$Conf{HardLinkMax} = 31999;

###########################################################################
# What to backup and when to do it
# (can be overridden in the per-PC config.pl)
###########################################################################
#
# Name of the host share that is backed up when using SMB.  This can be a
# string or an array of strings if there are multiple shares per host.
# Examples:
#
#   $Conf{SmbShareName} = 'c';          # backup 'c' share
#   $Conf{SmbShareName} = ['c', 'd'];   # backup 'c' and 'd' shares
#
# This setting only matters if $Conf{XferMethod} = 'smb'.
#
$Conf{SmbShareName} = 'C$';

#
# Smbclient share user name.  This is passed to smbclient's -U argument.
#
# This setting only matters if $Conf{XferMethod} = 'smb'.
#
$Conf{SmbShareUserName} = '';

#
# Smbclient share password.  This is passed to smbclient via its PASSWD
# environment variable.  There are several ways you can tell BackupPC
# the smb share password.  In each case you should be very careful about
# security.  If you put the password here, make sure that this file is
# not readable by regular users!  See the "Setting up config.pl" section
# in the documentation for more information.
#
# This setting only matters if $Conf{XferMethod} = 'smb'.
#
$Conf{SmbSharePasswd} = '';

#
# Which host directories to backup when using tar transport.  This can be a
# string or an array of strings if there are multiple directories to
# backup per host.  Examples:
#
#   $Conf{TarShareName} = '/';                  # backup everything
#   $Conf{TarShareName} = '/home';              # only backup /home
#   $Conf{TarShareName} = ['/home', '/src'];    # backup /home and /src
#
# The fact this parameter is called 'TarShareName' is for historical
# consistency with the Smb transport options.  You can use any valid
# directory on the client: there is no need for it to correspond to
# any Smb share or device mount point.
#
# Note also that you can also use $Conf{BackupFilesOnly} to specify
# a specific list of directories to backup.  It's more efficient to
# use this option instead of $Conf{TarShareName} since a new tar is
# run for each entry in $Conf{TarShareName}.
#
# On the other hand, if you add --one-file-system to $Conf{TarClientCmd}
# you can backup each file system separately, which makes restoring one
# bad file system easier.  In this case you would list all of the mount
# points here, since you can't get the same result with
# $Conf{BackupFilesOnly}:
#
#     $Conf{TarShareName} = ['/', '/var', '/data', '/boot'];
#
# This setting only matters if $Conf{XferMethod} = 'tar'.
#
$Conf{TarShareName} = '/';

#
# Minimum period in days between full backups. A full dump will only be
# done if at least this much time has elapsed since the last full dump,
# and at least $Conf{IncrPeriod} days has elapsed since the last
# successful dump.
#
# Typically this is set slightly less than an integer number of days. The
# time taken for the backup, plus the granularity of $Conf{WakeupSchedule}
# will make the actual backup interval a bit longer.
#
# There are two special values for $Conf{FullPeriod}:
#
#   -1   Don't do any regular backups on this machine.  Manually
#        requested backups (via the CGI interface) will still occur.
#
#   -2   Don't do any backups on this machine.  Manually requested
#        backups (via the CGI interface) will be ignored.
#
# These special settings are useful for a client that is no longer
# being backed up (eg: a retired machine), but you wish to keep the
# last backups available for browsing or restoring to other machines.
#
# Also, you might create a virtual client (by setting $Conf{ClientNameAlias})
# for restoring to a DVD or permanent media and you would set
# $Conf{FullPeriod} to -2 so that it is never backed up.
#
$Conf{FullPeriod} = 6.97;

#
# Minimum period in days between incremental backups (a user requested
# incremental backup will be done anytime on demand).
#
# Typically this is set slightly less than an integer number of days. The
# time taken for the backup, plus the granularity of $Conf{WakeupSchedule}
# will make the actual backup interval a bit longer.
#
$Conf{IncrPeriod} = 0.97;

#
# Number of full backups to keep.  Must be >= 1.
#
# In the steady state, each time a full backup completes successfully
# the oldest one is removed.  If this number is decreased, the
# extra old backups will be removed.
#
# If filling of incremental dumps is off the oldest backup always
# has to be a full (ie: filled) dump.  This might mean an extra full
# dump is kept until the second oldest (incremental) dump expires.
#
$Conf{FullKeepCnt} = 1;

#
# Very old full backups are removed after $Conf{FullAgeMax} days.  However,
# we keep at least $Conf{FullKeepCntMin} full backups no matter how old
# they are.
#
$Conf{FullKeepCntMin} = 1;
$Conf{FullAgeMax}     = 60;

#
# Number of incremental backups to keep.  Must be >= 1.
#
# In the steady state, each time an incr backup completes successfully
# the oldest one is removed.  If this number is decreased, the
# extra old backups will be removed.
#
$Conf{IncrKeepCnt} = 6;

#
# Very old incremental backups are removed after $Conf{IncrAgeMax} days.
# However, we keep at least $Conf{IncrKeepCntMin} incremental backups no
# matter how old they are.
#
$Conf{IncrKeepCntMin} = 1;
$Conf{IncrAgeMax}     = 30;

#
# Whether incremental backups are filled.  "Filling" means that the
# most recent full (or filled) dump is merged into the new incremental
# dump using hardlinks.  This makes an incremental dump look like a
# full dump.  Prior to v1.03 all incremental backups were filled.
# In v1.4.0 and later the default is off.
#
# BackupPC, and the cgi interface in particular, do the right thing on
# un-filled incremental backups.  It will correctly display the merged
# incremental backup with the most recent filled backup, giving the
# un-filled incremental backups a filled appearance.  That means it
# invisible to the user whether incremental dumps are filled or not.
#
# Filling backups takes a little extra disk space, and it does cost
# some extra disk activity for filling, and later removal.  Filling
# is no longer useful, since file mangling and compression doesn't
# make a filled backup very useful. It's likely the filling option
# will be removed from future versions: filling will be delegated to
# the display and extraction of backup data.
#
# If filling is off, BackupPC makes sure that the oldest backup is
# a full, otherwise the following incremental backups will be
# incomplete.  This might mean an extra full backup has to be
# kept until the following incremental backups expire.
#
# The default is off.  You can turn this on or off at any
# time without affecting existing backups.
#
$Conf{IncrFill} = 0;

#
# Number of restore logs to keep.  BackupPC remembers information about
# each restore request.  This number per client will be kept around before
# the oldest ones are pruned.
#
# Note: files/dirs delivered via Zip or Tar downloads don't count as
# restores.  Only the first restore option (where the files and dirs
# are written to the host) count as restores that are logged.
#
$Conf{RestoreInfoKeepCnt} = 10;

#
# List of directories or files to backup.  If this is defined, only these
# directories or files will be backed up.
#
# For Smb, only one of $Conf{BackupFilesExclude} and $Conf{BackupFilesOnly}
# can be specified per share. If both are set for a particular share, then
# $Conf{BackupFilesOnly} takes precedence and $Conf{BackupFilesExclude}
# is ignored.
#
# This can be set to a string, an array of strings, or, in the case
# of multiple shares, a hash of strings or arrays.  A hash is used
# to give a list of directories or files to backup for each share
# (the share name is the key).  If this is set to just a string or
# array, and $Conf{SmbShareName} contains multiple share names, then
# the setting is assumed to apply to only the first share name.
#
# Examples:
#    $Conf{BackupFilesOnly} = '/myFiles';
#    $Conf{BackupFilesOnly} = ['/myFiles'];     # same as first example
#    $Conf{BackupFilesOnly} = ['/myFiles', '/important'];
#    $Conf{BackupFilesOnly} = {
#       'c' => ['/myFiles', '/important'],      # these are for 'c' share
#       'd' => ['/moreFiles', '/archive'],      # these are for 'd' share
#    };
#
$Conf{BackupFilesOnly} = undef;

#
# List of directories or files to exclude from the backup.  For Smb,
# only one of $Conf{BackupFilesExclude} and $Conf{BackupFilesOnly}
# can be specified per share.  If both are set for a particular share,
# then $Conf{BackupFilesOnly} takes precedence and
# $Conf{BackupFilesExclude} is ignored.
#
# This can be set to a string, an array of strings, or, in the case
# of multiple shares, a hash of strings or arrays.  A hash is used
# to give a list of directories or files to exclude for each share
# (the share name is the key).  If this is set to just a string or
# array, and $Conf{SmbShareName} contains multiple share names, then
# the setting is assumed to apply to only the first share name.
#
# The exact behavior is determined by the underlying transport program,
# smbclient or tar.  For smbclient the exlclude file list is passed into
# the X option.  Simple shell wild-cards using "*" or "?" are allowed.
#
# For tar, if the exclude file contains a "/" it is assumed to be anchored
# at the start of the string.  Since all the tar paths start with "./",
# BackupPC prepends a "." if the exclude file starts with a "/".  Note
# that GNU tar version >= 1.13.7 is required for the exclude option to
# work correctly.  For linux or unix machines you should add
# "/proc" to $Conf{BackupFilesExclude} unless you have specified
# --one-file-system in $Conf{TarClientCmd} or --one-file-system in
# $Conf{RsyncArgs}.  Also, for tar, do not use a trailing "/" in
# the directory name: a trailing "/" causes the name to not match
# and the directory will not be excluded.
#
# Examples:
#    $Conf{BackupFilesExclude} = '/temp';
#    $Conf{BackupFilesExclude} = ['/temp'];     # same as first example
#    $Conf{BackupFilesExclude} = ['/temp', '/winnt/tmp'];
#    $Conf{BackupFilesExclude} = {
#       'c' => ['/temp', '/winnt/tmp'],         # these are for 'c' share
#       'd' => ['/junk', '/dont_back_this_up'], # these are for 'd' share
#    };
#
$Conf{BackupFilesExclude} = undef;

#
# PCs that are always or often on the network can be backed up after
# hours, to reduce PC, network and server load during working hours. For
# each PC a count of consecutive good pings is maintained. Once a PC has
# at least $Conf{BlackoutGoodCnt} consecutive good pings it is subject
# to "blackout" and not backed up during hours and days specified by
# $Conf{BlackoutWeekDays}, $Conf{BlackoutHourBegin} and
# $Conf{BlackoutHourEnd}.
#
# To allow for periodic rebooting of a PC or other brief periods when a
# PC is not on the network, a number of consecutive bad pings is allowed
# before the good ping count is reset. This parameter is
# $Conf{BlackoutBadPingLimit}.
#
# Note that bad and good pings don't occur with the same interval. If a
# machine is always on the network, it will only be pinged roughly once
# every $Conf{IncrPeriod} (eg: once per day). So a setting for
# $Conf{BlackoutGoodCnt} of 7 means it will take around 7 days for a
# machine to be subject to blackout. On the other hand, if a ping is
# failed, it will be retried roughly every time BackupPC wakes up, eg,
# every one or two hours. So a setting for $Conf{BlackoutBadPingLimit} of
# 3 means that the PC will lose its blackout status after 3-6 hours of
# unavailability.
#
# To disable the blackout feature set $Conf{BlackoutGoodCnt} to a negative
# value.  A value of 0 will make all machines subject to blackout.  But
# if you don't want to do any backups during the day it would be easier
# to just set $Conf{WakeupSchedule} to a restricted schedule.
#
$Conf{BlackoutBadPingLimit} = 3;
$Conf{BlackoutGoodCnt}      = 7;

#
# The default settings specify the blackout period from 7:00am to
# 7:30pm local time on Mon-Fri.  For $Conf{BlackoutWeekDays},
# 0 is Sunday, 1 is Monday etc.
#
$Conf{BlackoutHourBegin}    = 7.0;
$Conf{BlackoutHourEnd}      = 19.5;
$Conf{BlackoutWeekDays}     = [1, 2, 3, 4, 5];

###########################################################################
# General per-PC configuration settings
# (can be overridden in the per-PC config.pl)
###########################################################################
#
# What transport method to use to backup each host.  If you have
# a mixed set of WinXX and linux/unix hosts you will need to override
# this in the per-PC config.pl.
#
# The valid values are:
#
#   - 'smb':    backup and restore via smbclient and the SMB protocol.
#               Best choice for WinXX.
#
#   - 'rsync':  backup and restore via rsync (via rsh or ssh).
#               Best choice for linux/unix.  Can also work on WinXX.
#
#   - 'rsyncd': backup and restre via rsync daemon on the client.
#               Best choice for linux/unix if you have rsyncd running on
#               the client.  Can also work on WinXX.
#
#   - 'tar':    backup and restore via tar, tar over ssh, rsh or nfs.
#               Good choice for linux/unix.
#
$Conf{XferMethod} = 'smb';

#
# Full path for smbclient. Security caution: normal users should not
# allowed to write to this file or directory.
#
# smbclient is from the Samba distribution. smbclient is used to
# actually extract the incremental or full dump of the share filesystem
# from the PC.
#
# This setting only matters if $Conf{XferMethod} = 'smb'.
#
$Conf{SmbClientPath} = '/usr/bin/smbclient';

#
# Commands to run smbclient for a full dump, incremental dump or a restore.
# This setting only matters if $Conf{XferMethod} = 'smb'.
#
# The following variables are substituted at run-time:
#
#    $smbClientPath   same as $Conf{SmbClientPath}
#    $host            host to backup/restore
#    $hostIP          host IP address
#    $shareName       share name
#    $userName        user name
#    $fileList        list of files to backup (based on exclude/include)
#    $I_option        optional -I option to smbclient
#    $X_option        exclude option (if $fileList is an exclude list)
#    $timeStampFile   start time for incremental dump
#
$Conf{SmbClientFullCmd} = '$smbClientPath \\\\$host\\$shareName'
            . ' $I_option -U $userName -E -N -d 1'
            . ' -c tarmode\\ full -Tc$X_option - $fileList';

$Conf{SmbClientIncrCmd} = '$smbClientPath \\\\$host\\$shareName'
            . ' $I_option -U $userName -E -N -d 1'
            . ' -c tarmode\\ full -TcN$X_option $timeStampFile - $fileList';

$Conf{SmbClientRestoreCmd} = '$smbClientPath \\\\$host\\$shareName'
            . ' $I_option -U $userName -E -N -d 1'
            . ' -c tarmode\\ full -Tx -';

#
# Full command to run tar on the client.  GNU tar is required.  You will
# need to fill in the correct paths for ssh2 on the local host (server)
# and GNU tar on the client.  Security caution: normal users should not
# allowed to write to these executable files or directories.
#
# See the documentation for more information about setting up ssh2 keys.
#
# If you plan to use NFS then tar just runs locally and ssh2 is not needed.
# For example, assuming the client filesystem is mounted below /mnt/hostName,
# you could use something like:
#
#    $Conf{TarClientCmd} = '$tarPath -c -v -f - -C /mnt/$host/$shareName'
#                        . ' --totals';
#
# In the case of NFS or rsh you need to make sure BackupPC's privileges
# are sufficient to read all the files you want to backup.  Also, you
# will probably want to add "/proc" to $Conf{BackupFilesExclude}.
#
# The following variables are substituted at run-time:
#
#   $host        host name
#   $hostIP      host's IP address
#   $incrDate    newer-than date for incremental backups
#   $shareName   share name to backup (ie: top-level directory path)
#   $fileList    specific files to backup or exclude
#   $tarPath     same as $Conf{TarClientPath}
#   $sshPath     same as $Conf{SshPath}
#
# If a variable is followed by a "+" it is shell escaped.  This is
# necessary for the command part of ssh or rsh, since it ends up
# getting passed through the shell.
#
# This setting only matters if $Conf{XferMethod} = 'tar'.
#
$Conf{TarClientCmd} = '$sshPath -q -n -l root $host'
                    . ' $tarPath -c -v -f - -C $shareName+'
                    . ' --totals';

#
# Extra tar arguments for full backups.  Several variables are substituted at
# run-time.  See $Conf{TarClientCmd} for the list of variable substitutions.
#
# If you are running tar locally (ie: without rsh or ssh) then remove the
# "+" so that the argument is no longer shell escaped.
#
# This setting only matters if $Conf{XferMethod} = 'tar'.
#
$Conf{TarFullArgs} = '$fileList+';

#
# Extra tar arguments for incr backups.  Several variables are substituted at
# run-time.  See $Conf{TarClientCmd} for the list of variable substitutions.
#
# Note that GNU tar has several methods for specifying incremental backups,
# including:
#
#   --newer-mtime $incrDate+
#          This causes a file to be included if the modification time is
#          later than $incrDate (meaning its contents might have changed).
#          But changes in the ownership or modes will not qualify the
#          file to be included in an incremental.
#
#   --newer=$incrDate+
#          This causes the file to be included if any attribute of the
#          file is later than $incrDate, meaning either attributes or
#          the modification time.  This is the default method.  Do
#          not use --atime-preserve in $Conf{TarClientCmd} above,
#          otherwise resetting the atime (access time) counts as an
#          attribute change, meaning the file will always be included
#          in each new incremental dump.
#
# If you are running tar locally (ie: without rsh or ssh) then remove the
# "+" so that the argument is no longer shell escaped.
#
# This setting only matters if $Conf{XferMethod} = 'tar'.
#
$Conf{TarIncrArgs} = '--newer=$incrDate+ $fileList+';

#
# Full command to run tar for restore on the client.  GNU tar is required.
# This can be the same as $Conf{TarClientCmd}, with tar's -c replaced by -x
# and ssh's -n removed.
#
# See $Conf{TarClientCmd} for full details.
#
# This setting only matters if $Conf{XferMethod} = "tar".
#
$Conf{TarClientRestoreCmd} = '$sshPath -q -l root $host'
                   . ' $tarPath -x -p --numeric-owner --same-owner'
                   . ' -v -f - -C $shareName+';

#
# Full path for tar on the client. Security caution: normal users should not
# allowed to write to this file or directory.
#
# This setting only matters if $Conf{XferMethod} = 'tar'.
#
$Conf{TarClientPath} = '/bin/tar';

#
# Path to rsync executable on the client
#
$Conf{RsyncClientPath} = '/bin/rsync';

#
# Full command to run rsync on the client machine.  The following variables
# are substituted at run-time:
#
#        $host           host name being backed up
#        $hostIP         host's IP address
#        $shareName      share name to backup (ie: top-level directory path)
#        $rsyncPath      same as $Conf{RsyncClientPath}
#        $sshPath        same as $Conf{SshPath}
#        $argList        argument list, built from $Conf{RsyncArgs},
#                        $shareName, $Conf{BackupFilesExclude} and
#                        $Conf{BackupFilesOnly}
#
# This setting only matters if $Conf{XferMethod} = 'rsync'.
#
$Conf{RsyncClientCmd} = '$sshPath -l root $host $rsyncPath $argList+';

#
# Full command to run rsync for restore on the client.  The following
# variables are substituted at run-time:
#
#        $host           host name being backed up
#        $hostIP         host's IP address
#        $shareName      share name to backup (ie: top-level directory path)
#        $rsyncPath      same as $Conf{RsyncClientPath}
#        $sshPath        same as $Conf{SshPath}
#        $argList        argument list, built from $Conf{RsyncArgs},
#                        $shareName, $Conf{BackupFilesExclude} and
#                        $Conf{BackupFilesOnly}
#
# This setting only matters if $Conf{XferMethod} = 'rsync'.
#
$Conf{RsyncClientRestoreCmd} = '$sshPath -l root $host $rsyncPath $argList+';

#
# Share name to backup.  For $Conf{XferMethod} = "rsync" this should
# be a file system path, eg '/' or '/home'.
#
# For $Conf{XferMethod} = "rsyncd" this should be the name of the module
# to backup (ie: the name from /etc/rsynd.conf).
#
# This can also be a list of multiple file system paths or modules.
# For example, by adding --one-file-system to $Conf{RsyncArgs} you
# can backup each file system separately, which makes restoring one
# bad file system easier.  In this case you would list all of the mount
# points:
#
#     $Conf{RsyncShareName} = ['/', '/var', '/data', '/boot'];
#
$Conf{RsyncShareName} = '/';

#
# Rsync daemon port on the client, for $Conf{XferMethod} = "rsyncd".
#
$Conf{RsyncdClientPort} = 873;

#
# Rsync daemon user name on client, for $Conf{XferMethod} = "rsyncd".
# The user name and password are stored on the client in whatever file
# the "secrets file" parameter in rsyncd.conf points to
# (eg: /etc/rsyncd.secrets).
#
$Conf{RsyncdUserName} = '';

#
# Rsync daemon user name on client, for $Conf{XferMethod} = "rsyncd".
# The user name and password are stored on the client in whatever file
# the "secrets file" parameter in rsyncd.conf points to
# (eg: /etc/rsyncd.secrets).
#
$Conf{RsyncdPasswd} = '';

#
# Whether authentication is mandatory when connecting to the client's
# rsyncd.  By default this is on, ensuring that BackupPC will refuse to
# connect to an rsyncd on the client that is not password protected.
# Turn off at your own risk.
#
$Conf{RsyncdAuthRequired} = 1;

#
# Arguments to rsync for backup.  Do not edit the first set unless you
# have a thorough understanding of how File::RsyncP works.
#
# Examples of additional arguments that should work are --exclude/--include,
# eg:
#
#     $Conf{RsyncArgs} = [
#           # original arguments here
#           '-v',
#           '--exclude', '/proc',
#           '--exclude', '*.tmp',
#     ];
#
$Conf{RsyncArgs} = [
            #
            # Do not edit these!
            #
            '--numeric-ids',
            '--perms',
            '--owner',
            '--group',
            '--devices',
            '--links',
            '--times',
            '--block-size=2048',
            '--recursive',
            #
            # Add additional arguments here
            #
];

#
# Arguments to rsync for restore.  Do not edit the first set unless you
# have a thorough understanding of how File::RsyncP works.
#
#
$Conf{RsyncRestoreArgs} = [
            #
            # Do not edit these!
            #
            "--numeric-ids",
            "--perms",
            "--owner",
            "--group",
            "--devices",
            "--links",
            "--times",
            "--block-size=2048",
            "--relative",
            "--ignore-times",
            "--recursive",
            #
            # Add additional arguments here
            #
];

#
# Amount of verbosity in Rsync Xfer log files.  0 means be quiet,
# 1 will give will give one line per file, 2 will also show skipped
# files on incrementals, higher values give more output.  10 will
# include byte dumps of all data read/written, which will make the
# log files huge.
#
$Conf{RsyncLogLevel} = 1;

#
# Full path for ssh. Security caution: normal users should not
# allowed to write to this file or directory.
#
$Conf{SshPath} = '/usr/bin/ssh';

#
# Full path for nmblookup. Security caution: normal users should not
# allowed to write to this file or directory.
#
# nmblookup is from the Samba distribution. nmblookup is used to get the
# netbios name, necessary for DHCP hosts.
#
$Conf{NmbLookupPath} = '/usr/bin/nmblookup';

#
# NmbLookup command.  Given an IP address, does an nmblookup on that
# IP address.  The following variables are substituted at run-time:
#
#   $nmbLookupPath      path to nmblookup ($Conf{NmbLookupPath})
#   $host               IP address
#
# This command is only used for DHCP hosts: given an IP address, this
# command should try to find its NetBios name.
#
$Conf{NmbLookupCmd} = '$nmbLookupPath -A $host';

#
# NmbLookup command.  Given a netbios name, finds that host by doing
# a NetBios lookup.  Several variables are substituted at run-time:
#
#   $nmbLookupPath      path to nmblookup ($Conf{NmbLookupPath})
#   $host               NetBios name
#
# In some cases you might need to change the broadcast address, for
# example if nmblookup uses 192.168.255.255 by default and you find
# that doesn't work, try 192.168.1.255 (or your equivalent class C
# address) using the -B option:
#
#    $Conf{NmbLookupFindHostCmd} = '$nmbLookupPath -B 192.168.1.255 $host';
#
# If you use a WINS server and your machines don't respond to
# multicast NetBios requests you can use this (replace 1.2.3.4
# with the IP address of your WINS server):
#
#    $Conf{NmbLookupFindHostCmd} = '$nmbLookupPath -R -U 1.2.3.4 $host';
#
# This is preferred over multicast since it minimizes network traffic.
#
# Experiment manually for your site to see what form of nmblookup command
# works.
#
$Conf{NmbLookupFindHostCmd} = '$nmbLookupPath $host';

#
# For fixed IP address hosts, BackupPC_dump can also verify the netbios
# name to ensure it matches the host name.  An error is generated if
# they do not match.  Typically this flag is off.  But if you are going
# to transition a bunch of machines from fixed host addresses to DHCP,
# setting this flag is a great way to verify that the machines have
# their netbios name set correctly before turning on DCHP.
#
$Conf{FixedIPNetBiosNameCheck} = 0;

#
# Full path to the ping command.  Security caution: normal users
# should not be allowed to write to this file or directory.
#
# If you want to disable ping checking, set this to some program
# that exits with 0 status, eg:
#
#     $Conf{PingPath} = '/bin/echo';
#
$Conf{PingPath} = '/bin/ping';

#
# Ping command.  The following variables are substituted at run-time:
#
#   $pingPath      path to ping ($Conf{PingPath})
#   $host          host name
#
# Wade Brown reports that on solaris 2.6 and 2.7 ping -s returns the wrong
# exit status (0 even on failure).  Replace with "ping $host 1", which
# gets the correct exit status but we don't get the round-trip time.
#
$Conf{PingCmd} = '$pingPath -c 1 $host';

#
# Compression level to use on files.  0 means no compression.  Compression
# levels can be from 1 (least cpu time, slightly worse compression) to
# 9 (most cpu time, slightly better compression).  The recommended value
# is 3.  Changing to 5, for example, will take maybe 20% more cpu time
# and will get another 2-3% additional compression. See the zlib
# documentation for more information about compression levels.
#
# Changing compression on or off after backups have already been done
# will require both compressed and uncompressed pool files to be stored.
# This will increase the pool storage requirements, at least until all
# the old backups expire and are deleted.
#
# It is ok to change the compression value (from one non-zero value to
# another non-zero value) after dumps are already done.  Since BackupPC
# matches pool files by comparing the uncompressed versions, it will still
# correctly match new incoming files against existing pool files.  The
# new compression level will take effect only for new files that are
# newly compressed and added to the pool.
#
# If compression was off and you are enabling compression for the first
# time you can use the BackupPC_compressPool utility to compress the
# pool.  This avoids having the pool grow to accommodate both compressed
# and uncompressed backups.  See the documentation for more information.
#
# Note: compression needs the Compress::Zlib perl library.  If the
# Compress::Zlib library can't be found then $Conf{CompressLevel} is
# forced to 0 (compression off).
#
$Conf{CompressLevel} = 0;

#
# Maximum round-trip ping time in milliseconds.  This threshold is set
# to avoid backing up PCs that are remotely connected through WAN or
# dialup connections.  The output from ping -s (assuming it is supported
# on your system) is used to check the round-trip packet time.  On your
# local LAN round-trip times should be much less than 20msec.  On most
# WAN or dialup connections the round-trip time will be typically more
# than 20msec.  Tune if necessary.
#
$Conf{PingMaxMsec} = 20;

#
# Timeout in seconds when listening for the transport program's
# (smbclient, tar etc) stdout. If no output is received during this
# time, then it is assumed that something has wedged during a backup,
# and the backup is terminated.
#
# Note that stdout buffering combined with huge files being backed up
# could cause longish delays in the output from smbclient that
# BackupPC_dump sees, so in rare cases you might want to increase
# this value.
#
# Despite the name, this parameter sets the timeout for all transport
# methods (tar, smb etc).
#
$Conf{ClientTimeout} = 7200;

#
# Maximum number of log files we keep around in each PC's directory
# (ie: pc/$host).  These files are aged monthly.  A setting of 12
# means there will be at most the files LOG, LOG.0, LOG.1, ... LOG.11
# in the pc/$host directory (ie: about a years worth).  (Except this
# month's LOG, these files will have a .z extension if compression
# is on).
#
# If you decrease this number after BackupPC has been running for a
# while you will have to manually remove the older log files.
#
$Conf{MaxOldPerPCLogFiles} = 12;

#
# Optional commands to run before and after dumps and restores.
# Stdout from these commands will be written to the Xfer (or Restore)
# log file.  One example of using these commands would be to
# shut down and restart a database server, or to dump a database
# to files for backup.  Example:
#
#    $Conf{DumpPreUserCmd} = '$sshPath -l root $host /usr/bin/dumpMysql';
#
# The following variable substitutions are made at run time for
# $Conf{DumpPreUserCmd} and $Conf{DumpPostUserCmd}:
#
#        $type         type of dump (incr or full)
#        $xferOK       1 if the dump succeeded, 0 if it didn't
#        $client       client name being backed up
#        $host         host name (could be different from client name if
#                                 $Conf{ClientNameAlias} is set)
#        $hostIP       IP address of host
#        $user         user name from the hosts file
#        $moreUsers    list of additional users from the hosts file
#        $share        the first share name
#        $shares       list of all the share names
#        $XferMethod   value of $Conf{XferMethod} (eg: tar, rsync, smb)
#        $sshPath      value of $Conf{SshPath},
#
# The following variable substitutions are made at run time for
# $Conf{RestorePreUserCmd} and $Conf{RestorePostUserCmd}:
#
#        $client       client name being backed up
#        $xferOK       1 if the restore succeeded, 0 if it didn't
#        $host         host name (could be different from client name if
#                                 $Conf{ClientNameAlias} is set)
#        $hostIP       IP address of host
#        $user         user name from the hosts file
#        $moreUsers    list of additional users from the hosts file
#        $share        the first share name
#        $XferMethod   value of $Conf{XferMethod} (eg: tar, rsync, smb)
#        $sshPath      value of $Conf{SshPath},
#        $type         set to "restore"
#        $bkupSrcHost  host name of the restore source
#        $bkupSrcShare share name of the restore source
#        $bkupSrcNum   backup number of the restore source
#        $pathHdrSrc   common starting path of restore source
#        $pathHdrDest  common starting path of destination
#        $fileList     list of files being restored
#
$Conf{DumpPreUserCmd}     = undef;
$Conf{DumpPostUserCmd}    = undef;
$Conf{RestorePreUserCmd}  = undef;
$Conf{RestorePostUserCmd} = undef;

#
# Override the client's host name.  This allows multiple clients
# to all refer to the same physical host.  This should only be
# set in the per-PC config file and is only used by BackupPC at
# the last moment prior to generating the command used to backup
# that machine (ie: the value of $Conf{ClientNameAlias} is invisible
# everywhere else in BackupPC).  The setting can be a host name or
# IP address, eg:
#
#         $Conf{ClientNameAlias} = 'realHostName';
#         $Conf{ClientNameAlias} = '192.1.1.15';
#
# will cause the relevant smb/tar/rsync backup/restore commands to be
# directed to realHostName, not the client name.
#
# Note: this setting doesn't work for hosts with DHCP set to 1.
#
$Conf{ClientNameAlias} = undef;

#
# Advanced option for asking BackupPC to load additional perl modules.
# Can be a list (array ref) of module names to load at startup.
#
$Conf{PerlModuleLoad}     = undef;

###########################################################################
# Email reminders, status and messages
# (can be overridden in the per-PC config.pl)
###########################################################################
#
# Full path to the sendmail command.  Security caution: normal users
# should not allowed to write to this file or directory.
#
$Conf{SendmailPath} = '/usr/sbin/sendmail';

#
# Minimum period between consecutive emails to a single user.
# This tries to keep annoying email to users to a reasonable
# level.  Email checks are done nightly, so this number is effectively
# rounded up (ie: 2.5 means a user will never receive email more
# than once every 3 days).
#
$Conf{EMailNotifyMinDays} = 2.5;

#
# Name to use as the "from" name for email.  Depending upon your mail
# handler this is either a plain name (eg: "admin") or a fully-qualified
# name (eg: "admin@mydomain.com").
#
$Conf{EMailFromUserName} = '';

#
# Destination address to an administrative user who will receive a
# nightly email with warnings and errors.  If there are no warnings
# or errors then no email will be sent.  Depending upon your mail
# handler this is either a plain name (eg: "admin") or a fully-qualified
# name (eg: "admin@mydomain.com").
#
$Conf{EMailAdminUserName} = '';

#
# Destination domain name for email sent to users.  By default
# this is empty, meaning email is sent to plain, unqualified
# addresses.  Otherwise, set it to the destintation domain, eg:
#
#    $Cong{EMailUserDestDomain} = '@mydomain.com';
#
# With this setting user email will be set to 'user@mydomain.com'.
#
$Conf{EMailUserDestDomain} = '';

#
# This subject and message is sent to a user if their PC has never been
# backed up.
#
# These values are language-dependent.  The default versions can be
# found in the language file (eg: lib/BackupPC/Lang/en.pm).  If you
# need to change the message, copy it here and edit it, eg:
#
#   $Conf{EMailNoBackupEverMesg} = <<'EOF';
#   To: $user$domain
#   cc:
#   Subject: $subj
#   
#   Dear $userName,
#   
#   This is a site-specific email message.
#   EOF
#
$Conf{EMailNoBackupEverSubj} = undef;
$Conf{EMailNoBackupEverMesg} = undef;

#
# How old the most recent backup has to be before notifying user.
# When there have been no backups in this number of days the user
# is sent an email.
#
$Conf{EMailNotifyOldBackupDays} = 7.0;

#
# This subject and message is sent to a user if their PC has not recently
# been backed up (ie: more than $Conf{EMailNotifyOldBackupDays} days ago).
#
# These values are language-dependent.  The default versions can be
# found in the language file (eg: lib/BackupPC/Lang/en.pm).  If you
# need to change the message, copy it here and edit it, eg:
#
#   $Conf{EMailNoBackupRecentMesg} = <<'EOF';
#   To: $user$domain
#   cc:
#   Subject: $subj
#   
#   Dear $userName,
#   
#   This is a site-specific email message.
#   EOF
#
$Conf{EMailNoBackupRecentSubj} = undef;
$Conf{EMailNoBackupRecentMesg} = undef;

#
# How old the most recent backup of Outlook files has to be before
# notifying user.
#
$Conf{EMailNotifyOldOutlookDays} = 5.0;

#
# This subject and message is sent to a user if their Outlook files have
# not recently been backed up (ie: more than $Conf{EMailNotifyOldOutlookDays}
# days ago).
#
# These values are language-dependent.  The default versions can be
# found in the language file (eg: lib/BackupPC/Lang/en.pm).  If you
# need to change the message, copy it here and edit it, eg:
#
#   $Conf{EMailOutlookBackupMesg} = <<'EOF';
#   To: $user$domain
#   cc:
#   Subject: $subj
#   
#   Dear $userName,
#   
#   This is a site-specific email message.
#   EOF
#
$Conf{EMailOutlookBackupSubj} = undef;
$Conf{EMailOutlookBackupMesg} = undef;

###########################################################################
# CGI user interface configuration settings
# (can be overridden in the per-PC config.pl)
###########################################################################
#
# Normal users can only access information specific to their host.
# They can start/stop/browse/restore backups.
#
# Administrative users have full access to all hosts, plus overall
# status and log information.
#
# The administrative users are the union of the unix/linux group
# $Conf{CgiAdminUserGroup} and the manual list of users, separated
# by spaces, in $Conf{CgiAdminUsers}. If you don't want a group or
# manual list of users set the corresponding configuration setting
# to undef or an empty string.
#
# If you want every user to have admin privileges (careful!), set
# $Conf{CgiAdminUsers} = '*'.
#
# Examples:
#    $Conf{CgiAdminUserGroup} = 'admin';
#    $Conf{CgiAdminUsers}     = 'craig celia';
#    --> administrative users are the union of group admin, plus
#      craig and celia.
#
#    $Conf{CgiAdminUserGroup} = '';
#    $Conf{CgiAdminUsers}     = 'craig celia';
#    --> administrative users are only craig and celia'.
#
$Conf{CgiAdminUserGroup} = '';
$Conf{CgiAdminUsers}     = '';

#
# URL of the BackupPC_Admin CGI script.  Used for email messages.
#
$Conf{CgiURL} = undef;

#   
# Language to use.  See lib/BackupPC/Lang for the list of supported
# languages, which include English (en), French (fr), Spanish (es),
# and German (de).
#
# Currently the Language setting applies to the CGI interface and email
# messages sent to users.  Log files and other text is still in English.
#
$Conf{Language} = 'en';

#
# User names that are rendered by the CGI interface can be turned
# into links into their home page or other information about the
# user.  To set this up you need to create two sprintf() strings,
# that each contain a single '%s' that will be replaced by the user
# name.  The default is a mailto: link.
#
# $Conf{CgiUserHomePageCheck} should be an absolute file path that
# is used to check (via "-f") that the user has a valid home page.
# Set this to undef or an empty string to turn off this check.
#
# $Conf{CgiUserUrlCreate} should be a full URL that points to the
# user's home page.  Set this to undef or an empty string to turn
# off generation of URLs for user names.
#
# Example:
#    $Conf{CgiUserHomePageCheck} = '/var/www/html/users/%s.html';
#    $Conf{CgiUserUrlCreate}     = 'http://myhost/users/%s.html';
#    --> if /var/www/html/users/craig.html exists, then 'craig' will
#      be rendered as a link to http://myhost/users/craig.html.
#
$Conf{CgiUserHomePageCheck} = '';
$Conf{CgiUserUrlCreate}     = 'mailto:%s';

#
# Date display format for CGI interface.  True for US-style dates (MM/DD)
# and zero for international dates (DD/MM).
#
$Conf{CgiDateFormatMMDD} = 1;

#
# If set, the complete list of hosts appears in the left navigation
# bar for administrators.  Otherwise, just the hosts for which the
# user is listed in the host file (as either the user or in moreUsers)
# are displayed.
#
$Conf{CgiNavBarAdminAllHosts} = 0;

#
# Header font and size for CGI interface
#
$Conf{CgiHeaderFontType} = 'arial';
$Conf{CgiHeaderFontSize} = '3';

#
# Color scheme for CGI interface.  Default values give a very light blue
# for the background navigation color, green for the header background,
# and white for the body background.  (You call tell I should stick to
# programming and not graphical design.)
#
$Conf{CgiNavBarBgColor} = '#ddeeee';
$Conf{CgiHeaderBgColor} = '#99cc33';
$Conf{CgiBodyBgColor}   = '#ffffff';

#
# Hilight colors based on status that are used in the PC summary page.
#
$Conf{CgiStatusHilightColor} = {
    Reason_backup_failed           => '#ffcccc',
    Reason_backup_done             => '#ccffcc',
    Reason_no_ping                 => '#ffff99',
    Reason_backup_canceled_by_user => '#ff9900',
    Status_backup_in_progress      => '#66cc99',
};

#
# Additional CGI header text.  For example, if you wanted each CGI page
# to auto refresh every 900 seconds, you could add this text:
#
#       <meta http-equiv="refresh" content="900">
#
$Conf{CgiHeaders} = '<meta http-equiv="pragma" content="no-cache">';

#
# Directory where images are stored.  This directory should be below
# Apache's DocumentRoot.  This value isn't used by BackupPC but is
# used by configure.pl when you upgrade BackupPC.
#
# Example:
#     $Conf{CgiImageDir} = '/usr/local/apache/htdocs/BackupPC';
#
$Conf{CgiImageDir} = '';

#
# Additional mappings of file name extenions to Content-Type for
# individual file restore.  See $Ext2ContentType in BackupPC_Admin
# for the default setting.  You can add additional settings here,
# or override any default settings.  Example:
#
#     $Conf{CgiExt2ContentType} = {
#                 'pl'  => 'text/plain',
#          };
#
$Conf{CgiExt2ContentType} = { };

#
# URL (without the leading http://host) for BackupPC's image directory.
# The CGI script uses this value to serve up image files.
#
# Example:
#     $Conf{CgiImageDirURL} = '/BackupPC';
#
$Conf{CgiImageDirURL} = '';