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package Parse::Win32Registry::Win95::Value; |
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93
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use strict; |
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419
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75
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use warnings; |
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357
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65
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use base qw(Parse::Win32Registry::Value); |
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5497
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95
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use Carp; |
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615
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use Encode; |
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1273
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318
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use Parse::Win32Registry::Base qw(:all); |
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2624
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103
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use constant RGDB_VALUE_HEADER_LENGTH => 0xc; |
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12028
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sub new { |
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3190
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3190
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0
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5201
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my $class = shift; |
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3190
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4740
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my $regfile = shift; |
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3190
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4382
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my $offset = shift; # offset to RGDB value entry |
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19
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3190
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50
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6126
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croak 'Missing registry file' if !defined $regfile; |
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3190
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50
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5551
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croak 'Missing offset' if !defined $offset; |
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22
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3190
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7620
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my $fh = $regfile->get_filehandle; |
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24
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# RGDB Value Entry |
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# 0x00 dword = value type |
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# 0x04 |
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# 0x08 word = value name length |
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# 0x0a word = value data length |
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# 0x0c = value name [for name length bytes] |
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# + value data [for data length bytes] |
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# Value type may just be a word, not a dword; |
32
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# following word always appears to be zero. |
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34
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3190
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18319
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sysseek($fh, $offset, 0); |
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3190
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22799
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my $bytes_read = sysread($fh, my $rgdb_value_entry, |
36
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RGDB_VALUE_HEADER_LENGTH); |
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3190
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100
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8390
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if ($bytes_read != RGDB_VALUE_HEADER_LENGTH) { |
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1
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6
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warnf('Could not read RGDB value at 0x%x', $offset); |
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1
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15
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return; |
40
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} |
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42
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3189
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10707
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my ($type, |
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$name_length, |
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$data_length) = unpack('Vx4vv', $rgdb_value_entry); |
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46
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3189
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19509
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$bytes_read = sysread($fh, my $name, $name_length); |
47
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3189
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100
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8829
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if ($bytes_read != $name_length) { |
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1
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5
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warnf('Could not read name for RGDB value at 0x%x', $offset); |
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1
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29
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return; |
50
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} |
51
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3188
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9192
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$name = decode($Parse::Win32Registry::Base::CODEPAGE, $name); |
52
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53
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3188
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110692
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$bytes_read = sysread($fh, my $data, $data_length); |
54
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3188
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100
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9052
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if ($bytes_read != $data_length) { |
55
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1
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5
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warnf('Could not read data for RGDB value at 0x%x', $offset); |
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1
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16
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return; |
57
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} |
58
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59
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3187
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5913
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my $self = {}; |
60
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3187
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6972
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$self->{_regfile} = $regfile; |
61
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3187
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5545
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$self->{_offset} = $offset; |
62
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3187
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5644
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$self->{_length} = RGDB_VALUE_HEADER_LENGTH + $name_length + $data_length; |
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3187
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4947
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$self->{_allocated} = 1; |
64
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3187
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5206
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$self->{_tag} = 'rgdb value'; |
65
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3187
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5120
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$self->{_name} = $name; |
66
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3187
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4613
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$self->{_name_length} = $name_length; |
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3187
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7412
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$self->{_type} = $type; |
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3187
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5211
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$self->{_data} = $data; |
69
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3187
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4779
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$self->{_data_length} = $data_length; |
70
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3187
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5558
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bless $self, $class; |
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72
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3187
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12068
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return $self; |
73
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} |
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75
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sub get_data { |
76
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222
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222
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0
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425
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my $self = shift; |
77
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78
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222
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536
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my $type = $self->get_type; |
79
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80
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222
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431
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my $data = $self->{_data}; |
81
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222
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50
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519
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return if !defined $data; # actually, Win95 value data is always defined |
82
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83
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# apply decoding to appropriate data types |
84
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222
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100
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66
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857
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if ($type == REG_DWORD) { |
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100
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100
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100
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85
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80
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100
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174
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if (length($data) == 4) { |
86
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65
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182
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$data = unpack('V', $data); |
87
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} |
88
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else { |
89
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# incorrect length for dword data |
90
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15
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26
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$data = undef; |
91
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} |
92
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} |
93
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elsif ($type == REG_DWORD_BIG_ENDIAN) { |
94
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32
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100
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69
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if (length($data) == 4) { |
95
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20
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61
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$data = unpack('N', $data); |
96
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} |
97
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else { |
98
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# incorrect length for dword data |
99
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12
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18
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$data = undef; |
100
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} |
101
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} |
102
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elsif ($type == REG_SZ || $type == REG_EXPAND_SZ) { |
103
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# Snip off any terminating null. |
104
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# Typically, REG_SZ values will not have a terminating null, |
105
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# while REG_EXPAND_SZ values will have a terminating null |
106
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20
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100
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65
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chop $data if substr($data, -1, 1) eq "\0"; |
107
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} |
108
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elsif ($type == REG_MULTI_SZ) { |
109
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# Snip off any terminating nulls |
110
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78
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100
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245
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chop $data if substr($data, -1, 1) eq "\0"; |
111
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78
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100
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175
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chop $data if substr($data, -1, 1) eq "\0"; |
112
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78
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226
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my @multi_sz = split("\0", $data, -1); |
113
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# Make sure there is at least one empty string |
114
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78
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100
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187
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@multi_sz = ('') if @multi_sz == 0; |
115
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78
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100
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701
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return wantarray ? @multi_sz : join($", @multi_sz); |
116
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} |
117
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118
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144
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761
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return $data; |
119
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} |
120
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121
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sub as_regedit_export { |
122
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39
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39
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0
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91
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my $self = shift; |
123
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39
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50
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169
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my $version = shift || 5; |
124
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125
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39
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113
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my $name = $self->get_name; |
126
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39
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100
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159
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my $export = $name eq '' ? '@=' : '"' . $name . '"='; |
127
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128
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39
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104
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my $type = $self->get_type; |
129
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130
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# XXX |
131
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# if (!defined $self->{_data}) { |
132
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# $name = $name eq '' ? '@' : qq{"$name"}; |
133
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# return qq{; $name=(invalid data)\n}; |
134
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# } |
135
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136
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39
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100
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66
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221
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if ($type == REG_SZ) { |
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100
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100
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100
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137
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4
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9
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my $data = $self->get_data; |
138
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4
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50
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10
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$data = '' if !defined($data); |
139
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4
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14
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$export .= '"' . $data . '"'; |
140
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4
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10
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$export .= "\n"; |
141
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} |
142
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elsif ($type == REG_BINARY) { |
143
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2
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14
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$export .= 'hex:'; |
144
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2
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17
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$export .= format_octets($self->{_data}, length($export)); |
145
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} |
146
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elsif ($type == REG_DWORD) { |
147
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12
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32
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my $data = $self->get_data; |
148
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12
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100
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69
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$export .= defined($data) |
149
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? sprintf("dword:%08x", $data) |
150
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: "dword:"; |
151
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12
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32
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$export .= "\n"; |
152
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} |
153
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elsif ($type == REG_EXPAND_SZ || $type == REG_MULTI_SZ) { |
154
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my $data = $version == 4 |
155
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? $self->{_data} # raw data |
156
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12
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50
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69
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: encode("UCS-2LE", $self->{_data}); # ansi->unicode |
157
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12
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3840
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$export .= sprintf("hex(%x):", $type); |
158
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12
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63
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$export .= format_octets($data, length($export)); |
159
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} |
160
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else { |
161
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9
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50
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$export .= sprintf("hex(%x):", $type); |
162
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9
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51
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$export .= format_octets($self->{_data}, length($export)); |
163
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} |
164
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39
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176
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return $export; |
165
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} |
166
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167
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sub parse_info { |
168
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0
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0
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0
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my $self = shift; |
169
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170
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my $info = sprintf '0x%x rgdb value len=0x%x "%s" type=%d data,len=0x%x', |
171
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$self->{_offset}, |
172
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$self->{_length}, |
173
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$self->{_name}, |
174
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$self->{_type}, |
175
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0
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$self->{_data_length}; |
176
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0
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return $info; |
177
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} |
178
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179
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1; |