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#!/usr/bin/perl -w
################################################################################
# dumpbdb.pl
#
# Dump a Jabberd2 SM BerkeleyDB.
#
# The DB file given on the command line is dumped as an XML file to stdout.
#
# NB:
# - integer types are hard-coded to be 4 bytes LSB
#
# (c) 2007 Harald Braumann <harry@unheit.net>
#
# This software 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 3 of the License, or
# (at your option) any later version.
#
# This package 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 can view the GNU General Public License at
# http://www.gnu.org/licenses/gpl.html.
#
################################################################################
use BerkeleyDB;
# set to one to enable debug output
$DEBUG = 1;
# berkeleydb file
$db_file = "";
# object type identifiers
%db_object_types = (0 => "boolean", 1 => "integer", 2 => "string", 3 => "nad", 4 => "unknown");
# used for the print_ident function
$indent = 0;
$inc_indent = 2;
sub trc {
$0 =~ s,.*/,,;
print STDERR "$0: @_\n";
}
sub trcdebug {
trc("@_") if $DEBUG;
}
sub error {
trc("@_");
exit 1;
}
sub usage {
trc <<EOF
usage dumpdb <db file>
EOF
}
sub options {
$db_file = shift(@ARGV) || usage() && error;
}
#print_indent $str
sub print_indent {
my $str = shift;
printf("%*s%s", $indent, "", $str);
}
# get_string $value
# $value is an array ref
# strings are delimited by a binary 0
sub get_string {
my $value = shift;
my $pos;
for ($pos = 0; ord($value->[$pos]) != 0; $pos++) {}
my @str_arr = splice(@$value, 0, $pos);
splice(@$value, 0, 1); # remove the 0
return join('', @str_arr);
}
# get_int $value
# $value is an array ref
# int is encoded 4 bytes LSB
sub get_int {
my $value = shift;
my $int = ord($value->[3]) << 24 | ord($value->[2]) << 16 | ord($value->[1]) << 8 | ord($value->[0]);
splice(@$value, 0, 4);
return $int;
}
#dump_fields $value
sub dump_fields {
my @value = split(//, shift);
my $cur = 0;
while ($#value > 0) {
my $field = get_string(\@value);
my $type_id = get_int(\@value);
my $type = $db_object_types{$type_id};
defined $type || error("error: undefined type id: $type_id");
print_indent("<$field type=\"$type\">");
if ($type eq "integer") {
printf("%i", get_int(\@value));
} elsif ($type eq "boolean") {
printf("%s", get_int(\@value) > 0 ? "1" : "0");
} elsif ($type eq "string") {
print("<![CDATA[".get_string(\@value)."]]>");
} elsif ($type eq "nad") {
print("<![CDATA[".get_string(\@value)."]]>");
} elsif ($type eq "unknown") {
trc("warn: `unknown\' type found. don't know how to parse!");
print("<![CDATA[".join('', @value)."]]>");
$#value = 0;
} else {
trc("warn: unknown type found!");
print("<![CDATA[".join('', @value)."]]>");
$#value = 0;
}
printf("</$field>\n");
}
}
#dump_db $db_name
sub dump_db {
my $db_name = shift;
my $db;
my $cursor;
my ($key, $value) = ("", "");
trcdebug("dump db $db_name ...");
$db = new BerkeleyDB::Hash -Filename => $db_file, -Subname => $db_name, -Flags => DB_RDONLY ||
error("Error opening $db_file/$db_name: $BerkeleyDB::Error");
defined $db || error("Error opening $db_file/$db_name: $BerkeleyDB::Error");
$cursor = $db->db_cursor() || error "could not get cursor: $BerkeleyDB::Error" ;
print_indent("<$db_name>\n");
$indent += $inc_indent;
while ($cursor->c_get($key, $value, DB_NEXT) == 0) {
print_indent("<entry key=\"$key\">\n");
$indent += $inc_indent;
dump_fields($value);
$indent -= $inc_indent;
print_indent("</entry>\n");
}
$indent -= $inc_indent;
print_indent("</$db_name>\n");
trcdebug("dump db $db_name OK");
}
options();
trcdebug("open db $db_file ...");
$db = new BerkeleyDB::Unknown -Filename => $db_file, -Flags => DB_RDONLY ||
error "error opening $db_file: $BerkeleyDB::Error";
defined $db || error "error opening $db_file: $BerkeleyDB::Error";
trcdebug("OK");
trcdebug("walking sub dbs ...");
$cursor = $db->db_cursor() || error "could not get cursor: $BerkeleyDB::Error" ;
($k, $v) = ("", "") ;
print_indent("<sm-bdb>\n");
$indent += $inc_indent;
while ($cursor->c_get($k, $v, DB_NEXT) == 0) {
trcdebug("found sub db $k");
dump_db($k);
}
$indent -= $inc_indent;
print_indent("</sm-bdb>\n");
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