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package Protocol::DBus::Marshal; |
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72044
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use strict; |
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use warnings; |
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use Protocol::DBus::Pack (); |
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use Protocol::DBus::Signature (); |
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13811
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our $_ENDIAN_PACK; |
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# Set this to get actual Perl filehandles in the |
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# message body. XXX FIXME This is a very hacky way to do it! |
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our $FILEHANDLES; |
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# XXX FIXME Hackety-hack … |
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our $PRESERVE_VARIANT_SIGNATURES; |
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# for testing |
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our $DICT_CANONICAL; |
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our @_MARSHAL_FDS; |
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# sig, data (array ref) |
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sub marshal_le { |
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0
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10949
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local $_ENDIAN_PACK = '<'; |
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54
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local @_MARSHAL_FDS; |
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87
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return( _marshal(@_[0, 1]), \@_MARSHAL_FDS ); |
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} |
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# buf, buf offset, sig |
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sub unmarshal_le { |
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local $_ENDIAN_PACK = '<'; |
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return _unmarshal(@_); |
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} |
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sub marshal_be { |
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local $_ENDIAN_PACK = '>'; |
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local @_MARSHAL_FDS; |
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return( _marshal(@_[0, 1]), \@_MARSHAL_FDS ); |
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} |
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sub unmarshal_be { |
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local $_ENDIAN_PACK = '>'; |
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return _unmarshal(@_); |
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} |
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47
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#---------------------------------------------------------------------- |
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49
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sub _marshal { |
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164
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164
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278
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my ($sig, $data, $buf_sr, $_data_are_not_list) = @_; |
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164
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100
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295
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$buf_sr ||= \do { my $v = q<> }; |
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53
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54
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164
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273
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my @scts = Protocol::DBus::Signature::split($sig); |
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56
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164
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348
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for my $si ( 0 .. $#scts ) { |
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271
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my $sct = $scts[$si]; |
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59
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211
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100
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317
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my $datum = $_data_are_not_list ? $data : $data->[$si]; |
60
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61
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# Arrays |
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211
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100
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497
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if (index($sct, 'a') == 0) { |
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100
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100
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63
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9
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32
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_marshal_array( $sct, $datum, $buf_sr); |
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} |
65
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66
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# Structs are given as arrays. |
67
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elsif (index($sct, '(') == 0) { |
68
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11
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24
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Protocol::DBus::Pack::align_str($$buf_sr, 8); |
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70
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11
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17
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my $struct_sig = substr($sig, 1, -1); |
71
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72
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11
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20
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_marshal( $struct_sig, $datum, $buf_sr ); |
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} |
74
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75
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# Variants are given as two-member arrays. |
76
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elsif ($sct eq 'v') { |
77
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33
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93
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_marshal( g => $datum->[0], $buf_sr, 1 ); |
78
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33
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54
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_marshal( $datum->[0], $datum->[1], $buf_sr, 1 ); |
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} |
80
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81
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# Anything else is a basic type. |
82
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else { |
83
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158
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100
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285
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if ($sct eq 'o') { |
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100
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84
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9
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50
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72
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$datum =~ m<\A/(?:[A-Za-z0-9_]+(?:/[A-Za-z0-9_]+)*)?\z> or do { |
85
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0
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0
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die "Invalid object path: “$datum”"; |
86
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}; |
87
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} |
88
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elsif ($sct eq 'h') { |
89
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3
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5
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my $fd = fileno($datum); |
90
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3
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50
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7
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die "fileno($datum) returned undef!" if !defined $fd; |
91
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92
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3
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7
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my ($idx) = grep { $_MARSHAL_FDS[$_] == $fd } 0 .. $#_MARSHAL_FDS; |
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3
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7
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93
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94
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3
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100
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7
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if (!defined $idx) { |
95
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2
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3
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$idx = @_MARSHAL_FDS; |
96
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2
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4
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push @_MARSHAL_FDS, $fd; |
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} |
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99
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3
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4
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$datum = $idx; |
100
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} |
101
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102
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158
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377
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Protocol::DBus::Pack::align_str($$buf_sr, Protocol::DBus::Pack::ALIGNMENT()->{$sct}); |
103
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104
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158
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238
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my ($pack) = _get_pack_template($sct); |
105
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106
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158
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257
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$pack = "($pack)$_ENDIAN_PACK"; |
107
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158
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470
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$$buf_sr .= pack( $pack, $datum ); |
108
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} |
109
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} |
110
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111
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164
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299
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return $buf_sr; |
112
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} |
113
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114
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sub _marshal_array { |
115
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9
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9
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20
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my ($sct, $data, $buf_sr) = @_; |
116
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117
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9
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26
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Protocol::DBus::Pack::align_str($$buf_sr, 4); |
118
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119
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# We’ll fill this in with the length below. |
120
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9
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15
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$$buf_sr .= "\0\0\0\0"; |
121
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122
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9
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15
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my $array_start = length $$buf_sr; |
123
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124
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# Per the spec, array lengths do NOT include alignment bytes |
125
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# after the length. This only affects 8-byte-aligned types. |
126
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9
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13
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my $compensate_align8; |
127
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128
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9
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15
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substr($sct, 0, 1, q<>); # chop off the leading “a” |
129
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130
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9
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100
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24
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if ($array_start % 8) { |
131
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3
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4
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$compensate_align8 = (0 == index($sct, '(')); |
132
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3
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100
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12
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$compensate_align8 ||= (0 == index($sct, '{')); |
133
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3
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50
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6
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$compensate_align8 ||= ((Protocol::DBus::Pack::ALIGNMENT()->{$sct} || 0) == 8); |
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66
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134
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} |
135
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136
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# DICT_ENTRY arrays are given as plain Perl hashes |
137
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9
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100
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22
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if (0 == index($sct, '{')) { |
138
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6
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20
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my $key_sig = substr($sct, 1, 1); |
139
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6
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18
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my $value_sig = substr($sct, 2, -1); |
140
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141
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6
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100
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38
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for my $key ( $DICT_CANONICAL ? (sort keys %$data) : keys %$data ) { |
142
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24
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53
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Protocol::DBus::Pack::align_str($$buf_sr, 8); |
143
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24
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65
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_marshal($key_sig, $key, $buf_sr, 1); |
144
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24
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45
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_marshal( $value_sig, $data->{$key}, $buf_sr, 1); |
145
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} |
146
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} |
147
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148
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# Any other array is given as an array. |
149
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else { |
150
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3
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5
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for my $item ( @$data ) { |
151
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9
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14
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_marshal($sct, $item, $buf_sr, 1); |
152
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} |
153
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} |
154
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155
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9
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22
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my $array_len = length($$buf_sr) - $array_start; |
156
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9
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100
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28
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$array_len -= 4 if $compensate_align8; |
157
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158
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9
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35
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substr( $$buf_sr, $array_start - 4, 4, pack("L$_ENDIAN_PACK", $array_len) ); |
159
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} |
160
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161
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#---------------------------------------------------------------------- |
162
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163
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sub _unmarshal { |
164
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67
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67
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117
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my ($buf_sr, $buf_offset, $sig) = @_; |
165
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166
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67
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81
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my @items; |
167
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168
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67
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101
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my $buf_start = $buf_offset; |
169
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67
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87
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my $sig_offset = 0; |
170
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171
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67
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123
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while ($sig_offset < length($sig)) { |
172
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231
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409
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my $next_sct_len = Protocol::DBus::Signature::get_sct_length($sig, $sig_offset); |
173
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174
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231
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505
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my ($item, $item_length) = _unmarshal_sct( |
175
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$buf_sr, |
176
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$buf_offset, |
177
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substr( $sig, $sig_offset, $next_sct_len ), |
178
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); |
179
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180
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231
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475
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push @items, $item; |
181
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182
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231
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253
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$buf_offset += $item_length; |
183
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231
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408
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$sig_offset += $next_sct_len; |
184
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} |
185
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186
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67
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182
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return (\@items, $buf_offset - $buf_start); |
187
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} |
188
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189
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sub unmarshal_sct_le { |
190
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0
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0
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0
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0
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return _unmarshal_sct(@_); |
191
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} |
192
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193
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sub unmarshal_sct_be { |
194
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0
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0
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0
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0
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return _unmarshal_sct(@_); |
195
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} |
196
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197
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# SCT = “single complete type”. |
198
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# Returns the value plus its marshaled length. |
199
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sub _unmarshal_sct { |
200
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1713
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1713
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2463
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my ($buf_sr, $buf_offset, $sct_sig) = @_; |
201
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202
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1713
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1976
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my $buf_start = $buf_offset; |
203
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204
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1713
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100
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3677
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if (substr($sct_sig, 0, 1) eq 'a') { |
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100
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100
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205
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110
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|
|
|
|
209
|
Protocol::DBus::Pack::align($buf_offset, 4); |
206
|
|
|
|
|
|
|
|
207
|
110
|
|
|
|
|
259
|
my $array_len = unpack "\@$buf_offset L$_ENDIAN_PACK", $$buf_sr; |
208
|
110
|
|
|
|
|
160
|
$buf_offset += 4; #uint32 length |
209
|
|
|
|
|
|
|
|
210
|
110
|
|
|
|
|
117
|
my $obj; |
211
|
|
|
|
|
|
|
|
212
|
|
|
|
|
|
|
# We parse arrays of DICT_ENTRY into a hash. |
213
|
110
|
100
|
|
|
|
194
|
if (substr($sct_sig, 1, 1) eq '{') { |
214
|
|
|
|
|
|
|
|
215
|
|
|
|
|
|
|
# The key is always a basic type, so just one letter. |
216
|
46
|
|
|
|
|
65
|
my $key_type = substr($sct_sig, 2, 1); |
217
|
|
|
|
|
|
|
|
218
|
|
|
|
|
|
|
# The value can be any SCT. |
219
|
46
|
|
|
|
|
93
|
my $value_type = substr( $sct_sig, 3, Protocol::DBus::Signature::get_sct_length($sct_sig, 3) ); |
220
|
|
|
|
|
|
|
|
221
|
|
|
|
|
|
|
# Do this here rather than in |
222
|
|
|
|
|
|
|
# _unmarshal_to_hashref() to avoid |
223
|
|
|
|
|
|
|
# the creation of an intermediate length. |
224
|
46
|
|
|
|
|
105
|
Protocol::DBus::Pack::align($buf_offset, 8); |
225
|
|
|
|
|
|
|
|
226
|
46
|
|
|
|
|
95
|
$obj = _unmarshal_to_hashref($buf_sr, $buf_offset, $array_len, $key_type, $value_type); |
227
|
46
|
|
|
|
|
63
|
$buf_offset += $array_len; |
228
|
|
|
|
|
|
|
} |
229
|
|
|
|
|
|
|
|
230
|
|
|
|
|
|
|
# Anything else we parse normally. |
231
|
|
|
|
|
|
|
else { |
232
|
64
|
|
|
|
|
123
|
my $array_sig = substr( $sct_sig, 1, Protocol::DBus::Signature::get_sct_length($sct_sig, 1) ); |
233
|
|
|
|
|
|
|
|
234
|
64
|
|
|
|
|
80
|
my @array_items; |
235
|
64
|
|
|
|
|
116
|
$obj = bless \@array_items, 'Protocol::DBus::Type::Array'; |
236
|
|
|
|
|
|
|
|
237
|
|
|
|
|
|
|
# If the array contents are 8-byte-aligned, then the array will |
238
|
|
|
|
|
|
|
# actually be 4 bytes longer than this. But it doesn’t appear we |
239
|
|
|
|
|
|
|
# need to care about that since _unmarshal_sct() accounts for that. |
240
|
64
|
|
|
|
|
82
|
my $array_end = $buf_offset + $array_len; |
241
|
|
|
|
|
|
|
|
242
|
64
|
|
|
|
|
107
|
while ($buf_offset < $array_end) { |
243
|
838
|
|
|
|
|
1186
|
my ($item, $item_length) = _unmarshal_sct($buf_sr, $buf_offset, $array_sig); |
244
|
|
|
|
|
|
|
|
245
|
838
|
|
|
|
|
1000
|
$buf_offset += $item_length; |
246
|
|
|
|
|
|
|
|
247
|
838
|
|
|
|
|
1501
|
push @array_items, $item; |
248
|
|
|
|
|
|
|
} |
249
|
|
|
|
|
|
|
} |
250
|
|
|
|
|
|
|
|
251
|
110
|
|
|
|
|
209
|
return ($obj, $buf_offset - $buf_start); |
252
|
|
|
|
|
|
|
} |
253
|
|
|
|
|
|
|
elsif (substr($sct_sig, 0, 1) eq '(') { |
254
|
36
|
|
|
|
|
83
|
return _unmarshal_struct(@_); |
255
|
|
|
|
|
|
|
} |
256
|
|
|
|
|
|
|
elsif (substr($sct_sig, 0, 1) eq 'v') { |
257
|
165
|
|
|
|
|
256
|
return _unmarshal_variant(@_); |
258
|
|
|
|
|
|
|
} |
259
|
|
|
|
|
|
|
|
260
|
1402
|
|
|
|
|
1859
|
my ($pack_tmpl, $is_string) = _get_pack_template($sct_sig); |
261
|
|
|
|
|
|
|
|
262
|
1402
|
|
|
|
|
2992
|
Protocol::DBus::Pack::align($buf_offset, Protocol::DBus::Pack::ALIGNMENT()->{$sct_sig}); |
263
|
|
|
|
|
|
|
|
264
|
1402
|
|
|
|
|
3162
|
my $val = unpack("\@$buf_offset ($pack_tmpl)$_ENDIAN_PACK", $$buf_sr); |
265
|
|
|
|
|
|
|
|
266
|
1402
|
50
|
33
|
|
|
2351
|
if ($FILEHANDLES && $sct_sig eq 'h') { |
267
|
0
|
|
0
|
|
|
0
|
$val = $FILEHANDLES->[$val] || do { |
268
|
|
|
|
|
|
|
warn "UNIX_FD ($val) received that doesn’t refer to a received file descriptor!\n"; |
269
|
|
|
|
|
|
|
$val; |
270
|
|
|
|
|
|
|
}; |
271
|
|
|
|
|
|
|
} |
272
|
|
|
|
|
|
|
|
273
|
1402
|
100
|
|
|
|
3085
|
return ($val, $buf_offset - $buf_start + Protocol::DBus::Pack::WIDTH()->{$sct_sig} + ($is_string ? length($val) : 0)); |
274
|
|
|
|
|
|
|
} |
275
|
|
|
|
|
|
|
|
276
|
|
|
|
|
|
|
sub _unmarshal_variant { |
277
|
165
|
|
|
165
|
|
232
|
my ($buf_sr, $buf_offset) = @_; |
278
|
|
|
|
|
|
|
|
279
|
165
|
|
|
|
|
180
|
my $buf_start = $buf_offset; |
280
|
|
|
|
|
|
|
|
281
|
165
|
|
|
|
|
264
|
my ($sig, $len) = _unmarshal_sct( $buf_sr, $buf_offset, 'g' ); |
282
|
|
|
|
|
|
|
|
283
|
165
|
50
|
|
|
|
295
|
die sprintf("No sig ($len bytes?) from “%s”?", substr($$buf_sr, $buf_offset)) if !length $sig; |
284
|
|
|
|
|
|
|
|
285
|
165
|
|
|
|
|
192
|
$buf_offset += $len; |
286
|
|
|
|
|
|
|
|
287
|
165
|
|
|
|
|
236
|
(my $val, $len) = _unmarshal_sct( $buf_sr, $buf_offset, $sig ); |
288
|
|
|
|
|
|
|
|
289
|
|
|
|
|
|
|
return( |
290
|
165
|
50
|
|
|
|
403
|
$PRESERVE_VARIANT_SIGNATURES ? bless( [ $sig => $val ], 'Protocol::DBus::Type::Variant' ) : $val, |
291
|
|
|
|
|
|
|
$len + $buf_offset - $buf_start, |
292
|
|
|
|
|
|
|
); |
293
|
|
|
|
|
|
|
} |
294
|
|
|
|
|
|
|
|
295
|
|
|
|
|
|
|
sub _get_pack_template { |
296
|
1560
|
|
|
1560
|
|
1984
|
my ($sct_sig) = @_; |
297
|
|
|
|
|
|
|
|
298
|
1560
|
|
|
|
|
1750
|
my ($is_string, $pack_tmpl); |
299
|
1560
|
100
|
|
|
|
2369
|
if ( $pack_tmpl = Protocol::DBus::Pack::STRING()->{$sct_sig} ) { |
300
|
444
|
|
|
|
|
518
|
$is_string = 1; |
301
|
|
|
|
|
|
|
} |
302
|
|
|
|
|
|
|
else { |
303
|
1116
|
50
|
|
|
|
1684
|
$pack_tmpl = Protocol::DBus::Pack::NUMERIC()->{$sct_sig} or do { |
304
|
0
|
|
|
|
|
0
|
die "No basic type template for type “$sct_sig”!"; |
305
|
|
|
|
|
|
|
}; |
306
|
|
|
|
|
|
|
|
307
|
1116
|
|
|
|
|
1176
|
if (!Protocol::DBus::Pack::CAN_64()) { |
308
|
|
|
|
|
|
|
if ($pack_tmpl eq 'q') { |
309
|
|
|
|
|
|
|
$pack_tmpl = ( $_ENDIAN_PACK eq '>' ) ? 'x4 l' : 'l x4'; |
310
|
|
|
|
|
|
|
} |
311
|
|
|
|
|
|
|
elsif ($pack_tmpl eq 'Q') { |
312
|
|
|
|
|
|
|
$pack_tmpl = ( $_ENDIAN_PACK eq '>' ) ? 'x4 L' : 'L x4'; |
313
|
|
|
|
|
|
|
} |
314
|
|
|
|
|
|
|
} |
315
|
|
|
|
|
|
|
} |
316
|
|
|
|
|
|
|
|
317
|
1560
|
|
|
|
|
2376
|
return ($pack_tmpl, $is_string); |
318
|
|
|
|
|
|
|
} |
319
|
|
|
|
|
|
|
|
320
|
|
|
|
|
|
|
sub _unmarshal_to_hashref { |
321
|
46
|
|
|
46
|
|
97
|
my ($buf_sr, $buf_offset, $array_len, $key_type, $value_type) = @_; |
322
|
|
|
|
|
|
|
|
323
|
46
|
|
|
|
|
58
|
my %items; |
324
|
46
|
|
|
|
|
99
|
my $obj = bless \%items, 'Protocol::DBus::Type::Dict'; |
325
|
|
|
|
|
|
|
|
326
|
|
|
|
|
|
|
# NB: We already align()ed this. |
327
|
|
|
|
|
|
|
|
328
|
46
|
|
|
|
|
76
|
my $end_offset = $buf_offset + $array_len; |
329
|
|
|
|
|
|
|
|
330
|
46
|
|
|
|
|
75
|
while ($buf_offset < $end_offset) { |
331
|
157
|
|
|
|
|
326
|
Protocol::DBus::Pack::align($buf_offset, 8); |
332
|
|
|
|
|
|
|
|
333
|
157
|
|
|
|
|
255
|
my ($key, $len_in_buf) = _unmarshal_sct($buf_sr, $buf_offset, $key_type); |
334
|
|
|
|
|
|
|
|
335
|
157
|
|
|
|
|
223
|
$buf_offset += $len_in_buf; |
336
|
|
|
|
|
|
|
|
337
|
157
|
|
|
|
|
248
|
(my $val, $len_in_buf) = _unmarshal_sct($buf_sr, $buf_offset, $value_type); |
338
|
|
|
|
|
|
|
|
339
|
157
|
|
|
|
|
207
|
$buf_offset += $len_in_buf; |
340
|
|
|
|
|
|
|
|
341
|
157
|
|
|
|
|
408
|
$items{$key} = $val; |
342
|
|
|
|
|
|
|
} |
343
|
|
|
|
|
|
|
|
344
|
|
|
|
|
|
|
# We don’t need to return the length. |
345
|
46
|
|
|
|
|
93
|
return $obj; |
346
|
|
|
|
|
|
|
} |
347
|
|
|
|
|
|
|
|
348
|
|
|
|
|
|
|
sub _unmarshal_struct { |
349
|
36
|
|
|
36
|
|
56
|
my ($buf_sr, $buf_offset, $sct_sig) = @_; |
350
|
|
|
|
|
|
|
|
351
|
|
|
|
|
|
|
# Remove “()” and just parse as a series of types. |
352
|
36
|
|
|
|
|
55
|
chop $sct_sig; |
353
|
36
|
|
|
|
|
55
|
substr( $sct_sig, 0, 1, q<> ); |
354
|
|
|
|
|
|
|
|
355
|
36
|
|
|
|
|
44
|
my $buf_start = $buf_offset; |
356
|
|
|
|
|
|
|
|
357
|
36
|
|
|
|
|
71
|
Protocol::DBus::Pack::align($buf_offset, 8); |
358
|
|
|
|
|
|
|
|
359
|
36
|
|
|
|
|
61
|
my ($items_ar, $len) = _unmarshal($buf_sr, $buf_offset, $sct_sig); |
360
|
36
|
|
|
|
|
73
|
bless $items_ar, 'Protocol::DBus::Type::Struct'; |
361
|
|
|
|
|
|
|
|
362
|
36
|
|
|
|
|
76
|
return ($items_ar, ($buf_offset - $buf_start) + $len); |
363
|
|
|
|
|
|
|
} |
364
|
|
|
|
|
|
|
|
365
|
|
|
|
|
|
|
#---------------------------------------------------------------------- |
366
|
|
|
|
|
|
|
# The logic below is unused. I was under the impression that I’d need a |
367
|
|
|
|
|
|
|
# way to determine if a message body’s length matches the given SIGNATURE, |
368
|
|
|
|
|
|
|
# but of course we don’t because the header includes the body length. |
369
|
|
|
|
|
|
|
#---------------------------------------------------------------------- |
370
|
|
|
|
|
|
|
|
371
|
|
|
|
|
|
|
sub buffer_length_satisfies_signature_le { |
372
|
19
|
|
|
19
|
0
|
41403
|
local $_ENDIAN_PACK = '<'; |
373
|
19
|
|
|
|
|
45
|
return (_buffer_length_satisfies_signature(@_))[0]; |
374
|
|
|
|
|
|
|
} |
375
|
|
|
|
|
|
|
|
376
|
|
|
|
|
|
|
sub buffer_length_satisfies_signature_be { |
377
|
0
|
|
|
0
|
0
|
0
|
local $_ENDIAN_PACK = '>'; |
378
|
0
|
|
|
|
|
0
|
return (_buffer_length_satisfies_signature(@_))[0]; |
379
|
|
|
|
|
|
|
} |
380
|
|
|
|
|
|
|
|
381
|
|
|
|
|
|
|
sub _buffer_length_satisfies_signature { |
382
|
25
|
|
|
25
|
|
53
|
my ($buf, $buf_offset, $sig) = @_; |
383
|
|
|
|
|
|
|
|
384
|
25
|
|
|
|
|
39
|
my $sig_offset = 0; |
385
|
|
|
|
|
|
|
|
386
|
25
|
|
|
|
|
53
|
while ($buf_offset <= length($buf)) { |
387
|
|
|
|
|
|
|
|
388
|
|
|
|
|
|
|
# We’re good if this passes because it means the buffer is longer |
389
|
|
|
|
|
|
|
# than the passed-in signature needs it to be. |
390
|
52
|
100
|
|
|
|
109
|
return (1, $buf_offset) if $sig_offset == length($sig); |
391
|
|
|
|
|
|
|
|
392
|
41
|
|
|
|
|
73
|
my $sct_length = Protocol::DBus::Signature::get_sct_length($sig, $sig_offset); |
393
|
|
|
|
|
|
|
|
394
|
41
|
|
|
|
|
58
|
my $next_sct = substr( |
395
|
|
|
|
|
|
|
$sig, |
396
|
|
|
|
|
|
|
$sig_offset, |
397
|
|
|
|
|
|
|
$sct_length, |
398
|
|
|
|
|
|
|
); |
399
|
|
|
|
|
|
|
|
400
|
41
|
|
|
|
|
45
|
$sig_offset += $sct_length; |
401
|
|
|
|
|
|
|
|
402
|
41
|
50
|
|
|
|
133
|
if ($next_sct eq 'v') { |
|
|
50
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
|
|
100
|
|
|
|
|
|
403
|
0
|
|
|
|
|
0
|
my ($variant_sig, $len) = _unmarshal_sct($buf, $buf_offset, 'g'); |
404
|
0
|
|
|
|
|
0
|
$buf_offset += $len; |
405
|
|
|
|
|
|
|
|
406
|
|
|
|
|
|
|
# This has to recurse and preserve the offset. |
407
|
0
|
|
|
|
|
0
|
my ($ok, $new_offset) = _buffer_length_satisfies_signature( $buf, $buf_offset, $variant_sig ); |
408
|
0
|
0
|
|
|
|
0
|
return 0 if !$ok; |
409
|
0
|
|
|
|
|
0
|
$buf_offset = $new_offset; |
410
|
|
|
|
|
|
|
} |
411
|
|
|
|
|
|
|
|
412
|
|
|
|
|
|
|
# signatures |
413
|
|
|
|
|
|
|
elsif ($next_sct eq 'g') { |
414
|
|
|
|
|
|
|
# 2 for the length byte and the trailing NUL |
415
|
0
|
|
|
|
|
0
|
$buf_offset += 2 + unpack( "\@$buf_offset C", $buf ) |
416
|
|
|
|
|
|
|
} |
417
|
|
|
|
|
|
|
|
418
|
|
|
|
|
|
|
# strings and object paths |
419
|
|
|
|
|
|
|
elsif ( Protocol::DBus::Pack::STRING()->{$next_sct} ) { |
420
|
3
|
|
|
|
|
8
|
_add_uint32_variant_length(\$buf, \$buf_offset); |
421
|
3
|
|
|
|
|
7
|
$buf_offset++; #trailing NUL |
422
|
|
|
|
|
|
|
} |
423
|
|
|
|
|
|
|
|
424
|
|
|
|
|
|
|
# numerics |
425
|
|
|
|
|
|
|
elsif ( my $width = Protocol::DBus::Pack::WIDTH()->{$next_sct} ) { |
426
|
20
|
|
|
|
|
48
|
$buf_offset += $width; |
427
|
|
|
|
|
|
|
} |
428
|
|
|
|
|
|
|
|
429
|
|
|
|
|
|
|
else { |
430
|
18
|
|
|
|
|
23
|
my $char0 = substr($next_sct, 0, 1); |
431
|
|
|
|
|
|
|
|
432
|
18
|
100
|
|
|
|
38
|
if ($char0 eq 'a') { |
|
|
50
|
|
|
|
|
|
433
|
12
|
|
|
|
|
21
|
_add_uint32_variant_length(\$buf, \$buf_offset); |
434
|
|
|
|
|
|
|
} |
435
|
|
|
|
|
|
|
elsif ($char0 eq '(') { |
436
|
6
|
|
|
|
|
14
|
Protocol::DBus::Pack::align( $buf_offset, 8 ); |
437
|
|
|
|
|
|
|
|
438
|
6
|
|
|
|
|
20
|
my ($ok, $new_offset) = _buffer_length_satisfies_signature( $buf, $buf_offset, substr($next_sct, 1, -1) ); |
439
|
6
|
100
|
|
|
|
20
|
return 0 if !$ok; |
440
|
2
|
|
|
|
|
4
|
$buf_offset = $new_offset; |
441
|
|
|
|
|
|
|
} |
442
|
|
|
|
|
|
|
else { |
443
|
0
|
|
|
|
|
0
|
die "unrecognized SCT: “$next_sct”"; |
444
|
|
|
|
|
|
|
} |
445
|
|
|
|
|
|
|
} |
446
|
|
|
|
|
|
|
} |
447
|
|
|
|
|
|
|
|
448
|
10
|
|
|
|
|
27
|
return 0; |
449
|
|
|
|
|
|
|
} |
450
|
|
|
|
|
|
|
|
451
|
|
|
|
|
|
|
sub _add_uint32_variant_length { |
452
|
15
|
|
|
15
|
|
28
|
my ($buf_sr, $buf_offset_sr) = @_; |
453
|
|
|
|
|
|
|
|
454
|
15
|
|
|
|
|
37
|
Protocol::DBus::Pack::align( $$buf_offset_sr, 4 ); |
455
|
|
|
|
|
|
|
|
456
|
15
|
50
|
|
|
|
64
|
my $array_len = unpack( |
457
|
|
|
|
|
|
|
"\@$$buf_offset_sr " . ($_ENDIAN_PACK eq '<' ? 'V' : 'N'), |
458
|
|
|
|
|
|
|
$$buf_sr, |
459
|
|
|
|
|
|
|
); |
460
|
|
|
|
|
|
|
|
461
|
15
|
|
|
|
|
19
|
$$buf_offset_sr += 4; |
462
|
15
|
|
|
|
|
22
|
$$buf_offset_sr += $array_len; |
463
|
|
|
|
|
|
|
|
464
|
15
|
|
|
|
|
30
|
return; |
465
|
|
|
|
|
|
|
} |
466
|
|
|
|
|
|
|
|
467
|
|
|
|
|
|
|
1; |