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#!/usr/local/bin/perl -w |
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###################################################################### |
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# |
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# DNS/Config/File/Bind9.pm |
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# |
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# $Id: Bind9.pm,v 1.8 2003/02/16 10:15:32 awolf Exp $ |
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# $Revision: 1.8 $ |
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# $Author: awolf $ |
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# $Date: 2003/02/16 10:15:32 $ |
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# |
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# Copyright (C)2001-2003 Andy Wolf. All rights reserved. |
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# |
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# This library is free software; you can redistribute it and/or |
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# modify it under the same terms as Perl itself. |
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# |
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###################################################################### |
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package DNS::Config::File::Bind9; |
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no warnings 'portable'; |
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use 5.6.0; |
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use strict; |
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use warnings; |
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use vars qw(@ISA); |
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use DNS::Config; |
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use DNS::Config::Server; |
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use DNS::Config::Statement; |
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@ISA = qw(DNS::Config::File); |
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my $VERSION = '0.66'; |
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my $REVISION = sprintf("%d.%02d", q$Revision: 1.8 $ =~ /(\d+)\.(\d+)/); |
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sub new { |
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my($pkg, $file, $config) = @_; |
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my $class = ref($pkg) || $pkg; |
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my $self = { |
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'FILE' => $file |
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}; |
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$self->{'CONFIG'} = $config if($config); |
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bless $self, $class; |
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return $self; |
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} |
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sub parse { |
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my($self, $file) = @_; |
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my @lines = $self->read($file); |
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# # substitute include statements completely |
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# for(my $i=0 ; defined $lines[$i] ; $i++) { |
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# if($lines[$i] =~ /^\s*include\s+\"*(.+)\"*\s*\;/i) { |
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# my @included = $self->read($1); |
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# splice @lines, $i, 1, @included |
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# } |
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# } |
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return undef unless(scalar @lines); |
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$self->{'CONFIG'} = new DNS::Config() if(!$self->{'CONFIG'}); |
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my $result; |
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# Keep track of whether we're in a multi-line comment or not. |
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my $in_long_comment = 0; |
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# Keep track of which line we're on. Since we increment this at |
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# the end of the loop, don't use 'next' in here. |
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my $cntr = 0; |
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for my $line (@lines) { |
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if( $in_long_comment ){ |
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# Remove stray '*' characters. |
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$line =~ s/^[^\*]*\*[^\/]//g; |
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# See if we find the end. |
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if( $line =~ /^[^\*]*\*\// ){ |
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# We've found the end. Stip off stuff |
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# leading to it, and reset the flag. |
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$line =~ s/^[^\*]*\*\///; |
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$in_long_comment=0; |
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}else{ |
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# We're still in the comment. Make it a |
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# normal comment for now. |
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$line = "# $line"; |
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} |
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} |
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# replace lots of space with one space. |
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$line =~ s/\s+/ /g; |
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# Remove '//' style comments. |
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$line =~ s/\/\/.*$//g; |
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# Remove '#' style comments. |
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$line =~ s/\#.*$//g; |
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# See if we start a possibly long comment |
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if( $line =~ /\/\*/ ){ |
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# This is irritating. |
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$in_long_comment = 1; |
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if( $line =~ /\/\*[^\*]*\*\// ){ |
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$in_long_comment = 0; |
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$line =~ s/\/\*[^\*]*\*\///g; |
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}else{ |
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# The end isn't on this line. Cleanup |
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# this line and let it be added. |
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$line =~ s/\/\*.*$//g; |
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} |
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} |
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# We need to insert include statements at this point, but |
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# we need to know which 'directory' these possible relative- |
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# path files live in. So we partially parse the lines that |
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# we've got so far. Fortunately, you cannot invoke include |
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# within a statement. I hope. |
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123
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# This regex is also overly greedy. |
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if( $line =~ /^(.*)(include)\s+(\S+.*)\;(.*)$/ ){ |
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my $laststuff = $1; |
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my $incfile = $3; |
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my $nextstuff = $4; |
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129
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# Put the final stuff to the @result. |
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$result .= $laststuff; |
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132
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# Put this lot of stuff to the CONFIG |
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$self->parse_real( $result ); |
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135
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# reset $result |
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0
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$result = undef; |
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138
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# Get the directory now. |
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my $tdir = $self->_options_dir(); |
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141
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# Clean up the included file. |
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if( $incfile =~ /^\"(.+)\"$/ ){ |
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$incfile = $1; |
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}else{ |
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# Might need to revisit this. |
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} |
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148
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# Finally, why we're doing this. If this isn't |
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# an absolute path, then it must be a relative |
150
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# path. If it is relative, prepend the directory |
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# name so read() can actually find the file. |
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0
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if( $incfile !~ /^\s*\// && defined( $tdir ) ){ |
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$incfile = $tdir . "/" . $incfile; |
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} |
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156
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# Read in the included file, and put it at the start |
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# of the @lines that we have. |
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0
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my @included = $self->read($incfile); |
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160
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# I think this splice is right - insert after the |
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# current line. |
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splice @lines, $cntr+1, 0, @included; |
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164
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# Restore the stuff after the include line. |
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$line = $nextstuff; |
166
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} |
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168
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# Add the current line to the meta-results. |
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$result .= $line; |
170
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$cntr++; |
171
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} |
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173
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# Parse the remaining stuff (we might have already done this with |
174
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# stuff before an include file.) |
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1
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4
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$self->parse_real( $result ); |
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177
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6
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return $self; |
178
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} |
179
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180
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sub parse_real() { |
181
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1
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1
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0
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2
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my( $self, $result ) = (@_); |
182
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1
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50
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3
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return( undef ) unless( defined( $result ) ); |
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184
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1
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3
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my $tree = &analyze_brackets($result); |
185
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1
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4
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my @res = &analyze_statements(@$tree); |
186
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187
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1
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2
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foreach my $temp (@res) { |
188
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1
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3
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my @temp = @$temp; |
189
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1
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2
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my $type = shift @temp; |
190
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191
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1
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1
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my $statement; |
192
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193
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1
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2
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eval { |
194
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1
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5
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my $tmp = 'DNS::Config::Statement::' . ucfirst(lc $type); |
195
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196
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1
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50
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72
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if ( eval "require $tmp" ){ |
197
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1
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6
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$statement = $tmp->new(); |
198
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1
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4
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$statement->parse_tree(@temp); |
199
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}else{ |
200
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# Doesn't exist. |
201
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0
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0
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warn "Require of $tmp failed\n"; |
202
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} |
203
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}; |
204
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205
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1
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50
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6
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if($@) { |
206
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#warn $@; |
207
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208
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0
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0
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$statement = DNS::Config::Statement->new(); |
209
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0
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0
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$statement->parse_tree($type, @temp); |
210
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} |
211
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212
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1
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6
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$self->{'CONFIG'}->add($statement); |
213
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} |
214
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} |
215
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216
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# Iterate through the config, and pull the directory statement. |
217
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sub _options_dir() { |
218
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219
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0
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0
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0
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my $self = shift; |
220
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221
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0
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0
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my @statements = $self->config->statements(); |
222
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223
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0
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0
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my $retdir = undef; |
224
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225
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0
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0
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foreach my $statement( @statements ){ |
226
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0
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0
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my $tref = ref( $statement ); |
227
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0
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0
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0
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next unless( $tref eq "DNS::Config::Statement::Options" ); |
228
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229
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0
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0
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$retdir = $statement->directory(); |
230
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} |
231
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232
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0
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0
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return( $retdir ); |
233
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} |
234
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235
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sub dump { |
236
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0
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0
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0
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0
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my($self, $file) = @_; |
237
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238
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0
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0
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0
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$file = $file || $self->{'FILE'}; |
239
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240
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0
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0
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0
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return undef unless($file); |
241
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0
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0
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0
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return undef unless($self->{'CONFIG'}); |
242
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243
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0
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0
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0
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if($file) { |
244
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0
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0
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0
|
if(open(FILE, ">$file")) { |
245
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0
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0
|
my $old_fh = select(FILE); |
246
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247
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0
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0
|
map { $_->dump() } $self->config()->statements(); |
|
0
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0
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|
248
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249
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0
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0
|
select($old_fh); |
250
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0
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0
|
close FILE; |
251
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|
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} |
252
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0
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0
|
else { return undef; } |
253
|
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} |
254
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|
else { |
255
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0
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|
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0
|
map { $_->dump() } $self->config()->statements(); |
|
0
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0
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|
256
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} |
257
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258
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0
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0
|
return $self; |
259
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|
} |
260
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261
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|
|
sub config { |
262
|
1
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|
|
1
|
0
|
7
|
my($self) = @_; |
263
|
|
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|
264
|
1
|
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|
|
3
|
return($self->{'CONFIG'}); |
265
|
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|
|
} |
266
|
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|
267
|
|
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|
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|
|
sub analyze_brackets { |
268
|
1
|
|
|
1
|
0
|
2
|
my($string) = @_; |
269
|
|
|
|
|
|
|
|
270
|
1
|
|
|
|
|
132
|
my @chars = split //, $string; |
271
|
|
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|
272
|
1
|
|
|
|
|
6
|
my $tree = []; |
273
|
1
|
|
|
|
|
2
|
my @chunks; |
274
|
|
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|
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|
|
my @stack; |
275
|
|
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|
276
|
1
|
|
|
|
|
5
|
my %matching = ( |
277
|
|
|
|
|
|
|
'(' => ')', |
278
|
|
|
|
|
|
|
'[' => ']', |
279
|
|
|
|
|
|
|
'<' => '>', |
280
|
|
|
|
|
|
|
'{' => '}', |
281
|
|
|
|
|
|
|
); |
282
|
|
|
|
|
|
|
|
283
|
1
|
|
|
|
|
2
|
for my $char (@chars) { |
284
|
91
|
100
|
|
|
|
140
|
if(grep {$char eq $_} keys(%matching)) { |
|
364
|
100
|
|
|
|
598
|
|
|
356
|
|
|
|
|
491
|
|
285
|
2
|
|
|
|
|
3
|
my $temp = []; |
286
|
2
|
|
|
|
|
4
|
push @$tree, $temp; |
287
|
2
|
|
|
|
|
2
|
push @chunks, $tree; |
288
|
2
|
|
|
|
|
4
|
push @stack, $matching{$char}; |
289
|
2
|
|
|
|
|
4
|
$tree = $temp; |
290
|
|
|
|
|
|
|
} |
291
|
|
|
|
|
|
|
elsif(grep {$char eq $_} values(%matching)) { |
292
|
2
|
|
|
|
|
5
|
my $expected = pop @stack; |
293
|
2
|
50
|
33
|
|
|
10
|
die "Invalid order !\n" if((!defined $expected) || ($char ne $expected)); |
294
|
2
|
|
|
|
|
3
|
$tree = pop @chunks; |
295
|
2
|
50
|
|
|
|
8
|
die "Unmatched closing !\n" if(!ref($tree)); |
296
|
|
|
|
|
|
|
} |
297
|
|
|
|
|
|
|
else { |
298
|
87
|
|
|
|
|
85
|
my $noe = scalar(@$tree); |
299
|
|
|
|
|
|
|
|
300
|
87
|
100
|
100
|
|
|
280
|
if((!$noe) || (ref($$tree[$noe-1]) eq 'ARRAY')) { |
301
|
5
|
|
|
|
|
10
|
push @$tree, ($char); |
302
|
|
|
|
|
|
|
} |
303
|
|
|
|
|
|
|
else { |
304
|
82
|
|
|
|
|
180
|
$$tree[$noe-1] .= $char; |
305
|
|
|
|
|
|
|
} |
306
|
|
|
|
|
|
|
} |
307
|
|
|
|
|
|
|
} |
308
|
|
|
|
|
|
|
|
309
|
1
|
50
|
|
|
|
4
|
die "Unbalanced !\n" if(scalar @stack); |
310
|
|
|
|
|
|
|
|
311
|
1
|
|
|
|
|
10
|
return($tree); |
312
|
|
|
|
|
|
|
} |
313
|
|
|
|
|
|
|
|
314
|
|
|
|
|
|
|
sub analyze_statements { |
315
|
3
|
|
|
3
|
0
|
7
|
my(@array) = @_; |
316
|
3
|
|
|
|
|
3
|
my @result; |
317
|
|
|
|
|
|
|
my $full; |
318
|
|
|
|
|
|
|
|
319
|
3
|
|
|
|
|
5
|
for my $line (@array) { |
320
|
7
|
100
|
|
|
|
14
|
if(!ref($line)) { |
321
|
5
|
|
|
|
|
23
|
$line =~ s/\s*\;\s*/\;/g; |
322
|
|
|
|
|
|
|
|
323
|
5
|
|
|
|
|
14
|
my(@parts) = split /;/, $line, -1; |
324
|
|
|
|
|
|
|
|
325
|
5
|
100
|
|
|
|
11
|
shift @parts if(!$parts[0]); |
326
|
|
|
|
|
|
|
|
327
|
5
|
100
|
|
|
|
583
|
if($parts[$#parts-1] eq '') { |
328
|
1
|
|
|
|
|
1
|
$full = 1; |
329
|
1
|
|
|
|
|
2
|
pop @parts; |
330
|
|
|
|
|
|
|
} |
331
|
|
|
|
|
|
|
else { |
332
|
4
|
|
|
|
|
8
|
$full = 0; |
333
|
|
|
|
|
|
|
} |
334
|
|
|
|
|
|
|
|
335
|
5
|
|
|
|
|
9
|
for my $temp (@parts) { |
336
|
7
|
100
|
|
|
|
19
|
if($temp) { |
337
|
5
|
|
|
|
|
18
|
$temp =~ s/^\s*//g; |
338
|
|
|
|
|
|
|
|
339
|
5
|
|
|
|
|
14
|
my @chunks = split / /, $temp; |
340
|
|
|
|
|
|
|
|
341
|
5
|
|
|
|
|
13
|
push @result, (\@chunks); |
342
|
|
|
|
|
|
|
} |
343
|
|
|
|
|
|
|
} |
344
|
|
|
|
|
|
|
} |
345
|
|
|
|
|
|
|
else { |
346
|
2
|
|
|
|
|
10
|
my @statements = &analyze_statements(@$line); |
347
|
|
|
|
|
|
|
|
348
|
2
|
|
|
|
|
3
|
my @temp; |
349
|
2
|
50
|
|
|
|
6
|
if(!$full) { my $temp = pop @result; @temp = @$temp; } |
|
2
|
|
|
|
|
2
|
|
|
2
|
|
|
|
|
5
|
|
350
|
2
|
|
|
|
|
4
|
push @temp, (\@statements); |
351
|
2
|
|
|
|
|
6
|
push @result, (\@temp); |
352
|
|
|
|
|
|
|
} |
353
|
|
|
|
|
|
|
} |
354
|
|
|
|
|
|
|
|
355
|
3
|
|
|
|
|
35
|
return(@result); |
356
|
|
|
|
|
|
|
} |
357
|
|
|
|
|
|
|
|
358
|
|
|
|
|
|
|
1; |
359
|
|
|
|
|
|
|
|
360
|
|
|
|
|
|
|
__END__ |