mirror of
https://0xacab.org/liberate/backupninja.git
synced 2024-11-08 20:02:32 +01:00
bc9be0d576
Removing the quote and semicolon characters should be sufficient to prevent breaking out of the shell command, but this may need reviewed by someone more knowlegeable in shell scripting.
333 lines
9.5 KiB
Bash
333 lines
9.5 KiB
Bash
# -*- mode: sh; sh-basic-offset: 3; indent-tabs-mode: nil; -*-
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# vim: set filetype=sh sw=3 sts=3 expandtab autoindent:
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#
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# mysql handler script for backupninja
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#
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getconf backupdir /var/backups/mysql
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getconf databases all
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getconf ignores
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getconf nodata
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getconf dbhost localhost
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getconf hotcopy no
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getconf sqldump no
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getconf sqldumpoptions "--lock-tables --complete-insert --add-drop-table --quick --quote-names"
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getconf compress yes
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getconf vsname
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# authentication:
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getconf user
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getconf dbusername
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getconf dbpassword
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getconf configfile /etc/mysql/debian.cnf
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# Decide if the handler should operate on a vserver or on the host.
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# In the former case, check that $vsname exists and is running.
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usevserver=no
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vroot=''
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if [ $vservers_are_available = yes ]; then
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if [ -n "$vsname" ]; then
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# does it exist ?
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if ! vservers_exist "$vsname" ; then
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fatal "The vserver given in vsname ($vsname) does not exist."
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fi
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# is it running ?
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vservers_running $vsname || fatal "The vserver $vsname is not running."
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# everything ok
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info "Using vserver '$vsname'."
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usevserver=yes
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vroot="$VROOTDIR/$vsname"
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else
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info "No vserver name specified, actions will be performed on the host."
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fi
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fi
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## Prepare ignore part of the command
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## This only works for mysqldump at the moment
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ignore=''
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for i in $ignores $nodata; do
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ignore="$ignore --ignore-table=$i"
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done
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# create backup dirs, $vroot will be empty if no vsname was specified
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# and we will instead proceed to operate on the host
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[ -d $vroot$backupdir ] || mkdir -p $vroot$backupdir
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[ -d $vroot$backupdir ] || fatal "Backup directory '$vroot$backupdir'"
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hotdir="$backupdir/hotcopy"
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dumpdir="$backupdir/sqldump"
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if [ $usevserver = yes ]
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then
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[ "$sqldump" == "no" -o -d $vroot$dumpdir ] || $VSERVER $vsname exec mkdir -p $dumpdir
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[ "$hotcopy" == "no" -o -d $vroot$hotdir ] || $VSERVER $vsname exec mkdir -p $hotdir
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else
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[ "$sqldump" == "no" -o -d $dumpdir ] || mkdir -p $dumpdir
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[ "$hotcopy" == "no" -o -d $hotdir ] || mkdir -p $hotdir
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fi
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#######################################################################
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## AUTHENTICATION
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#
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# one of three authentication methods:
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# 1. setting the user, so that /home/user/.my.cnf is used.
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# 2. specifying the user and password in the handler config,
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# which generates a temporary .my.cnf in /root/.my.cnf
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# 3. specify the config file with --defaults-extra-file
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# (this option DOESN'T WORK WITH MYSQLHOTCOPY)
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#
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# create .my.cnf
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# only if dbusername and dbpassword specified.
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# we create a tmp file because we don't want to
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# specify the password on the command line.
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defaultsfile=""
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if [ -n "$dbusername" -a -n "$dbpassword" ]
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then
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if [ $usevserver = yes ]
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then
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home=`$VSERVER $vsname exec getent passwd "root" | @AWK@ -F: '{print $6}'`
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else
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home=`getent passwd "root" | @AWK@ -F: '{print $6}'`
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fi
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[ -d $home ] || fatal "Can't find root's home directory ($home)."
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mycnf="$home/.my.cnf"
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if [ $usevserver = yes ]
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then
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workcnf="$vroot$mycnf"
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else
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workcnf="$mycnf"
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fi
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if [ -f $workcnf ]
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then
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# rename temporarily
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tmpcnf="$workcnf.disable"
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debug "mv $workcnf $tmpcnf"
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mv $workcnf $tmpcnf
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fi
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oldmask=`umask`
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umask 077
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cat > $workcnf <<EOF
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# auto generated backupninja mysql conf
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[mysql]
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host=$dbhost
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user=$dbusername
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password="$dbpassword"
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[mysqldump]
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host=$dbhost
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user=$dbusername
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password="$dbpassword"
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[mysqlhotcopy]
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host=$dbhost
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user=$dbusername
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password="$dbpassword"
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[mysqladmin]
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host=$dbhost
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user=$dbusername
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password="$dbpassword"
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EOF
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umask $oldmask
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defaultsfile="--defaults-extra-file=$mycnf"
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# else, if a user is set use her .my.cnf
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elif [ -n "$user" ]
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then
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userset=true;
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if [ $usevserver = yes ]
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then
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userhome=`$VSERVER $vsname exec getent passwd "$user" | @AWK@ -F: '{print $6}'`
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if [ $? -eq 2 ]
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then
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fatal "User $user not found in /etc/passwd"
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fi
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debug "User home set to: $vroot$userhome"
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[ -f $vroot$userhome/.my.cnf ] || fatal "Can't find config file in $userhome/.my.cnf"
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else
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userhome=`getent passwd "$user" | @AWK@ -F: '{print $6}'`
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if [ $? -eq 2 ]
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then
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fatal "User $user not found in /etc/passwd"
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fi
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debug "User home set to: $userhome"
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[ -f $userhome/.my.cnf ] || fatal "Can't find config file in $userhome/.my.cnf"
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fi
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defaultsfile="--defaults-extra-file=$userhome/.my.cnf"
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debug "using $defaultsfile"
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# otherwise use $configfile
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else
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user=root
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defaultsfile="--defaults-extra-file=$configfile"
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fi
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#######################################################################
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## HOT COPY
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if [ "$hotcopy" == "yes" ]
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then
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info "Initializing hotcopy method"
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if [ "$databases" == "all" ]
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then
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if [ $usevserver = yes ]
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then
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info "dbhost: $dbhost"
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execstr="$VSERVER $vsname exec $MYSQLHOTCOPY -h $dbhost --quiet --allowold --regexp /.\*/./.\*/ $hotdir"
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else
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execstr="$MYSQLHOTCOPY --quiet --allowold --regexp /.\*/./.\*/ $hotdir"
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fi
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debug "su $user -c \"$execstr\""
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if [ ! $test ]
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then
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output=`su $user -c "$execstr" 2>&1`
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code=$?
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if [ "$code" == "0" ]
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then
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debug "$output"
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info "Successfully finished hotcopy of all mysql databases"
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else
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warning "$output"
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warning "Failed to hotcopy all mysql databases"
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fi
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fi
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else
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for db in $databases
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do
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if [ $usevserver = yes ]
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then
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execstr="$VSERVER $vsname exec $MYSQLHOTCOPY --allowold $db $hotdir"
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else
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execstr="$MYSQLHOTCOPY --allowold $db $hotdir"
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fi
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debug 'su $user -c \"$execstr\"'
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if [ ! $test ]
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then
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output=`su $user -c "$execstr" 2>&1`
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code=$?
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if [ "$code" == "0" ]
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then
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debug "$output"
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info "Successfully finished hotcopy of mysql database $db"
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else
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warning "$output"
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warning "Failed to hotcopy mysql database $db"
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fi
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fi
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done
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fi
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fi
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##########################################################################
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## SQL DUMP
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if [ "$sqldump" == "yes" ]
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then
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info "Initializing SQL dump method"
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if [ "$databases" == "all" ]
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then
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if [ $usevserver = yes ]
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then
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debug 'set -o pipefail ; echo show databases | $VSERVER $vsname exec su $user -c \"$MYSQL $defaultsfile\" | grep -v Database | grep -v '"'"'^\(information\|performance\)_schema$'"'"
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databases=`set -o pipefail ; echo 'show databases' | $VSERVER $vsname exec su $user -c "$MYSQL $defaultsfile" | grep -v Database | grep -v '^\(information\|performance\)_schema$'`
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if [ $? -ne 0 ]
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then
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fatal "Authentication problem, maybe user/password is wrong or mysqld is not running?"
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fi
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else
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databases=$(set -o pipefail ; su $user -c "$MYSQL $defaultsfile -N -B -e 'show databases'" | sed 's/|//g;/\+----/d;/^\(information\|performance\)_schema$/d')
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if [ $? -ne 0 ]
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then
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fatal "Authentication problem, maybe user/password is wrong or mysqld is not running?"
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fi
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fi
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fi
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for db in $databases
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do
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# Sanitize database name
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db=$(echo $db | tr -d \'\;)
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DUMP_BASE="$MYSQLDUMP $defaultsfile $sqldumpoptions"
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# Dumping structure and data
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DUMP="$DUMP_BASE $ignore $db"
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# If requested, dump only the table structure for this database
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if echo "$nodata" | grep -E '(^|[[:space:]])'"$db\." >/dev/null
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then
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# Get the structure of the tables, without data
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DUMP_STRUCT="$DUMP_BASE --no-data $db"
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for qualified_table in $nodata
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do
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table=$( expr match "$qualified_table" "$db\.\(.\+\)" )
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DUMP_STRUCT="$DUMP_STRUCT $table"
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done
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DUMP="( $DUMP; $DUMP_STRUCT )"
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fi
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if [ $usevserver = yes ]
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then
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# Test to make sure mysqld is running, if it is not sqldump will not work
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$VSERVER $vsname exec su $user -c "$MYSQLADMIN $defaultsfile ping 2>&1 >/dev/null"
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if [ $? -ne 0 ]; then
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fatal "mysqld doesn't appear to be running!"
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fi
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if [ "$compress" == "yes" ]; then
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execstr="$VSERVER $vsname exec $DUMP | $GZIP $GZIP_OPTS > '$vroot$dumpdir/${db}.sql.gz'"
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else
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execstr="$VSERVER $vsname exec $DUMP -r '$vroot$dumpdir/${db}.sql'"
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fi
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else
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# Test to make sure mysqld is running, if it is not sqldump will not work
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su $user -c "$MYSQLADMIN $defaultsfile ping 2>&1 >/dev/null"
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if [ $? -ne 0 ]; then
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fatal "mysqld doesn't appear to be running!"
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fi
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if [ "$compress" == "yes" ]; then
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execstr="$DUMP | $GZIP $GZIP_OPTS > '$dumpdir/${db}.sql.gz'"
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else
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execstr="$DUMP > '$dumpdir/${db}.sql'"
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fi
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fi
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debug "su $user -c \"$execstr\""
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if [ ! $test ]
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then
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output=`su $user -s /bin/bash -c "set -o pipefail ; $execstr" 2>&1`
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code=$?
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if [ "$code" == "0" ]
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then
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debug "$output"
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info "Successfully finished dump of mysql database $db"
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else
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warning "$output"
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warning "Failed to dump mysql databases $db"
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fi
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fi
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done
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fi
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# clean up tmp config file
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if [ "$dbusername" != "" -a "$dbpassword" != "" ]
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then
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## clean up tmp config file
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debug "rm $workcnf"
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rm $workcnf
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if [ -f "$tmpcnf" ]
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then
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debug "mv $tmpcnf $workcnf"
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mv $tmpcnf $workcnf
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fi
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fi
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return 0
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