ext/DB_File/dbinfo

   1 #!/usr/local/bin/perl
   2
   3 # Name:         dbinfo -- identify berkeley DB version used to create
   4 #                         a database file
   5 #
   6 # Author:       Paul Marquess  <Paul.Marquess@btinternet.com>
   7 # Version:      1.05
   8 # Date          1sh November 2003
   9 #
  10 #     Copyright (c) 1998-2003 Paul Marquess. All rights reserved.
  11 #     This program is free software; you can redistribute it and/or
  12 #     modify it under the same terms as Perl itself.
  13
  14 # Todo: Print more stats on a db file, e.g. no of records
  15 #       add log/txn/lock files
  16
  17 use strict ;
  18
  19 my %Data =
  20         (
  21         0x053162 =>     {
  22                           Type     => "Btree",
  23                           Versions =>
  24                                 {
  25                                   1     => [0, "Unknown (older than 1.71)"],
  26                                   2     => [0, "Unknown (older than 1.71)"],
  27                                   3     => [0, "1.71 -> 1.85, 1.86"],
  28                                   4     => [0, "Unknown"],
  29                                   5     => [0, "2.0.0 -> 2.3.0"],
  30                                   6     => [0, "2.3.1 -> 2.7.7"],
  31                                   7     => [0, "3.0.x"],
  32                                   8     => [0, "3.1.x -> 4.0.x"],
  33                                   9     => [1, "4.1.x or greater"],
  34                                 }
  35                         },
  36         0x061561 =>     {
  37                           Type     => "Hash",
  38                           Versions =>
  39                                 {
  40                                   1     => [0, "Unknown (older than 1.71)"],
  41                                   2     => [0, "1.71 -> 1.85"],
  42                                   3     => [0, "1.86"],
  43                                   4     => [0, "2.0.0 -> 2.1.0"],
  44                                   5     => [0, "2.2.6 -> 2.7.7"],
  45                                   6     => [0, "3.0.x"],
  46                                   7     => [0, "3.1.x -> 4.0.x"],
  47                                   8     => [1, "4.1.x or greater"],
  48                                 }
  49                         },
  50         0x042253 =>     {
  51                           Type     => "Queue",
  52                           Versions =>
  53                                 {
  54                                   1     => [0, "3.0.x"],
  55                                   2     => [0, "3.1.x"],
  56                                   3     => [0, "3.2.x -> 4.0.x"],
  57                                   4     => [1, "4.1.x or greater"],
  58                                 }
  59                         },
  60         ) ;
  61
  62 die "Usage: dbinfo file\n" unless @ARGV == 1 ;
  63
  64 print "testing file $ARGV[0]...\n\n" ;
  65 open (F, "<$ARGV[0]") or die "Cannot open file $ARGV[0]: $!\n" ;
  66
  67 my $buff ;
  68 read F, $buff, 30 ;
  69
  70
  71 my (@info) = unpack("NNNNNNC", $buff) ;
  72 my (@info1) = unpack("VVVVVVC", $buff) ;
  73 my ($magic, $version, $endian, $encrypt) ;
  74
  75 if ($Data{$info[0]}) # first try DB 1.x format, big endian
  76 {
  77     $magic = $info[0] ;
  78     $version = $info[1] ;
  79     $endian  = "Big Endian" ;
  80     $encrypt = "Not Supported";
  81 }
  82 elsif ($Data{$info1[0]}) # first try DB 1.x format, little endian
  83 {
  84     $magic = $info1[0] ;
  85     $version = $info1[1] ;
  86     $endian  = "Little Endian" ;
  87     $encrypt = "Not Supported";
  88 }
  89 elsif ($Data{$info[3]}) # next DB 2.x big endian
  90 {
  91     $magic = $info[3] ;
  92     $version = $info[4] ;
  93     $endian  = "Big Endian" ;
  94 }
  95 elsif ($Data{$info1[3]}) # next DB 2.x little endian
  96 {
  97     $magic = $info1[3] ;
  98     $version = $info1[4] ;
  99     $endian  = "Little Endian" ;
 100 }
 101 else
 102   { die "not a Berkeley DB database file.\n" }
 103
 104 my $type = $Data{$magic} ;
 105 $magic = sprintf "%06X", $magic ;
 106
 107 my $ver_string = "Unknown" ;
 108
 109 if ( defined $type->{Versions}{$version} )
 110 {
 111      $ver_string = $type->{Versions}{$version}[1];
 112      if ($type->{Versions}{$version}[0] )
 113        { $encrypt = $info[6] ? "Enabled" : "Disabled" }
 114      else
 115        { $encrypt = "Not Supported" }
 116 }
 117
 118 print <<EOM ;
 119 File Type:              Berkeley DB $type->{Type} file.
 120 File Version ID:        $version
 121 Built with Berkeley DB: $ver_string
 122 Byte Order:             $endian
 123 Magic:                  $magic
 124 Encryption:             $encrypt
 125 EOM
 126
 127 close F ;
 128
 129 exit ;