/usr/bin/dbs_empty is in libdbix-easy-perl 0.17-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 | #!/usr/bin/perl -w
eval 'exec /usr/bin/perl -w -S $0 ${1+"$@"}'
if 0; # not running under some shell
# dbs_empty - erases any data from a given SQL database
# Copyright (C) 1999,2000,2001 Stefan Hornburg
# Author: Stefan Hornburg (Racke) <racke@linuxia.de>
# Maintainer: Stefan Hornburg (Racke) <racke@linuxia.de>
# Version: 0.13
# This file is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2, or (at your option) any
# later version.
# This file is distributed in the hope that it will be
# useful, but WITHOUT ANY WARRANTY; without even the implied warranty
# of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this file; see the file COPYING. If not, write to the Free
# Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
use strict;
use DBIx::Easy;
use Getopt::Long;
use Term::ReadKey;
# process commandline parameters
my %opts;
my $whandler = $SIG{__WARN__};
$SIG{__WARN__} = sub {print STDERR "$0: @_";};
unless (GetOptions (\%opts, 'exclude-matching-tables=s', 'tables|t')) {
exit 1;
}
$SIG{__WARN__} = $whandler;
# sanity check on commandline parameters
if (exists $opts{'exclude-matching-tables'}) {
eval {'' =~ /$opts{'exclude-matching-tables'}/;};
if ($@) {
$@ =~ s%at /.*$%%;
die "$0: $@";
}
}
my $dbif;
my $pwdused = 0;
my ($driver, $database, $user) = @ARGV;
$dbif = new DBIx::Easy ($driver, $database, $user);
# handler for DBI error messages and missing password
$dbif -> install_handler (\&fatal);
# we need to explicitly establish the connection
# for the case that a password is needed
$dbif -> connect;
my %fieldmap;
my ($sth, $keyfield, $update);
my ($table, $key, $fieldnames, @values, $headline);
my (@columns, $routine);
for ($dbif->tables) {
# skip tables preserved by user
if (exists $opts{'exclude-matching-tables'}) {
next if $table =~ /$opts{'exclude-matching-tables'}/;
}
if ($opts{'tables'}) {
# remove table from database
$dbif -> process ("DROP TABLE $_");
} else {
# empty table
$dbif -> process ("DELETE FROM $_ WHERE 1 = 1");
}
}
# ensures commit
undef $dbif;
# -----------------------------------
# FUNCTION: fatal
#
# Error handler called by DBIx::Easy.
# -----------------------------------
sub fatal {
my ($statement, $err, $msg) = @_;
my $pwd;
if ($dbif->is_auth_error ($err)) {
unless ($pwdused) {
print "We need a password.\n";
$pwd = querypwd();
$pwdused = 1;
# retry the connection
if (length ($pwd)) {
$dbif = new DBIx::Easy ($driver, $database, $user, $pwd);
$dbif -> install_handler (\&fatal);
$dbif -> connect ();
return;
} else {
die ("$statement: $msg.\n");
}
}
}
die ("$statement: $msg.\n");
}
# ----------------------------
# FUNCTION: querypwd
#
# Queries user for a password.
# ----------------------------
sub querypwd () {
my $pwd;
print "Password: ";
ReadMode ('noecho'); # turn echo off
$pwd = ReadLine (0);
ReadMode ('restore'); # restore terminal
print "\n";
chomp ($pwd);
$pwd;
}
# script documentation (POD style)
=head1 NAME
dbs_empty - Empty SQL Databases
=head1 DESCRIPTION
dbs_empty is an utility that B<completely erases> any data from
a given SQL database.
=head1 COMMAND LINE PARAMETERS
Required command line parameters are the DBI driver
(C<Pg> for Postgres or C<mysql> for MySQL)
and the database name. The third parameter is optionally
and specifies the database user and/or the host where the
database resides (C<racke>, C<racke@linuxia.de> or C<@linuxia.de>).
=head1 COMMAND LINE OPTIONS
=head2 B<--exclude-matching-tables>=REGEXP
Excludes any table matching the regular expression REGEXP from dumping.
=head2 B<-t, --tables>
Remove tables from database too.
=head1 AUTHOR
Stefan Hornburg (Racke), racke@linuxia.de
=head1 SEE ALSO
perl(1), DBIx::Easy(3)
=cut
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