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stmt |
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package Net::DNS::TestNS; |
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120319
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use XML::LibXML; |
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use IO::File; |
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use Data::Dumper; |
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use strict; |
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use warnings; |
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use Carp; |
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require Exporter; |
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our @ISA = qw(Exporter); |
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# Items to export into callers namespace by default. Note: do not export |
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# names by default without a very good reason. Use EXPORT_OK instead. |
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# Do not simply export all your public functions/methods/constants. |
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our @EXPORT_OK = qw ( |
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); |
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our @EXPORT = qw( |
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); |
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use vars qw( $AUTOLOAD |
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$LastRevision |
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$VERSION |
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$errorcondition |
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$TESTNS_DTD |
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$TESTNS_DTD_0 |
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$TESTNS_DTD_1_0 |
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); |
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$VERSION = (qw$LastChangedRevision: 461 $)[1]; |
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use Net::DNS::TestNS::Nameserver; |
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use Net::DNS; |
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my $verbose=0; |
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sub get_dtd { |
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return $TESTNS_DTD; |
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} |
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sub new { |
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my $class = shift; |
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my $self = {}; |
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bless $self,ref $class || $class; |
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my ($configfile,$params)=@_; |
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$self->{servercount}=0; |
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$self->{verbose} = ${$params}{Verbose} || $verbose; |
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$self->{validate} = 1; |
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$self->{validate} = ${$params}{Validate} if defined ${$params}{Validate}; |
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if (! $configfile){ |
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$errorcondition="No config file specified" ; |
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return 0; |
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} |
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if (! -f $configfile){ |
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$errorcondition="$configfile does not exist" ; |
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return 0; |
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} |
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my $docstring; |
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$docstring=$self->_preprocess_input("",$configfile); |
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return 0 unless $docstring; |
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my $parser=XML::LibXML->new(); |
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89
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my $doc=$parser->parse_string($docstring); |
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91
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my $root=$doc->getDocumentElement; |
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my $DTD_version=$root->findvalue('@version'); |
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my $dtd_str=$TESTNS_DTD_0 if ! $DTD_version; |
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$dtd_str=$TESTNS_DTD_1_0 if $DTD_version eq "1.0"; |
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carp "Could not determine DTD version from configuration file" unless $dtd_str; |
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my $dtd= XML::LibXML::Dtd->parse_string($dtd_str); |
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$doc->validate($dtd) if $self->{'validate'}; |
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100
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print STDERR "Warning version not defined assuming version 0 of the DTD.\n". |
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Carp::shortmess ."\n" |
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unless $DTD_version; |
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104
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my $servercount=0; |
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106
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foreach my $server ($root->findnodes('server')){ |
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my %answerdb; |
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109
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my $ip=$server->findvalue('@ip'); |
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$ip =~ s/\s*//g; |
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my $port=$server->findvalue('@port'); |
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print "---------Server $ip ($port) ----------------\n" if $self->{verbose}; |
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114
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foreach my $qname ($server->findnodes('qname')){ |
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my $query_name= $qname->findvalue('@name'); |
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if ($query_name =~ /\s/){ |
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$errorcondition="spaces in queryname are not allowed"; |
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return 0; |
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#next; |
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} |
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$query_name.="." if $query_name !~ /\.$/; |
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123
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foreach my $qtype ($qname->findnodes('qtype')){ |
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my $query_type= $qtype->findvalue('@type'); |
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if (exists $answerdb{$query_name}->{$query_type}){ |
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$errorcondition= "There is allready data for $query_name,$query_type"; |
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return 0; |
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#next; |
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} |
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print "=$query_name,$query_type\n" if $self->{verbose}; |
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133
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my $delay= $qtype->findvalue('@delay'); |
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$answerdb{$query_name}->{$query_type}->{'delay'}=0; |
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136
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if ($delay=~/^\d+$/){ |
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$answerdb{$query_name}->{$query_type}->{'delay'}=$delay ; |
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} |
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140
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if (! $DTD_version){ |
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$answerdb{$query_name}->{$query_type}->{'rcode'}= |
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$qtype->findvalue('@rcode'); |
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$answerdb{$query_name}->{$query_type}->{'header'}->{"aa"}= |
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$qtype->findvalue('@aa'); |
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$answerdb{$query_name}->{$query_type}->{'header'}->{"ad"}= |
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$qtype->findvalue('@ad'); |
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$answerdb{$query_name}->{$query_type}->{'header'}->{"ra"}= |
148
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$qtype->findvalue('@ra'); |
149
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} else { |
150
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my @header= $qtype->findnodes('header'); |
151
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carp "Other than one header node" if scalar @header != 1; |
152
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{ |
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my @rcode=$header[0]->findnodes('rcode'); |
154
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carp "Other than one rcode node" if scalar @rcode != 1; |
155
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my $rcode_val=$rcode[0]->findvalue('@value'); |
156
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croak "No rcode found" unless $rcode_val; |
157
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print "RCODE: $rcode_val\n" if $self->{verbose}; |
158
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$answerdb{$query_name}->{$query_type}->{'rcode'}= $rcode_val; |
159
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} |
160
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161
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# Parse the required fields |
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foreach my $headerfield qw( aa ra ){ |
163
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my @fields=$header[0]->findnodes($headerfield); |
164
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carp "Only one $headerfield node is allowed" if scalar @fields != 1; |
165
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my $field_val=$fields[0]->findvalue('@value'); |
166
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croak "No $headerfield value found" unless defined $field_val; |
167
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print uc($headerfield).": $field_val\n" if $self->{verbose}; |
168
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$answerdb{$query_name}->{$query_type}->{'header'}->{$headerfield}= $field_val; |
169
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} |
170
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171
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172
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# Parse the non-required fields |
173
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foreach my $headerfield qw( ad cd qr rd tc id qdcount ancount nscount adcount){ |
174
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my @fields=$header[0]->findnodes($headerfield); |
175
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next unless @fields; |
176
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carp "More than one $headerfield node is allowed" if scalar @fields != 1; |
177
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my $field_val=$fields[0]->findvalue('@value'); |
178
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print uc($headerfield).": $field_val\n" if $self->{verbose}; |
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$answerdb{$query_name}->{$query_type}->{'header'}->{$headerfield}= $field_val; |
180
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} |
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182
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183
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184
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} # End DTD_VERSION specific parsing. |
185
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my @raw=$qtype->findnodes('raw'); |
186
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187
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if (@raw){ |
188
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my $rawhex=$raw[0]->findvalue("."); |
189
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$rawhex =~s/\s*//g; |
190
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my $packetdata=pack("H*",$rawhex); |
191
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$answerdb{$query_name}->{$query_type}->{'raw'}=$packetdata; |
192
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}else{ |
193
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# not @raw, which should be the default for DTD version 0. |
194
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foreach my $ans ($qtype->findnodes('ans')){ |
195
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my $rr_string=$ans->findvalue("."); |
196
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$rr_string =~s/\n//g; |
197
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next if $rr_string =~ /^\s*$/; |
198
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my $ans_rr= Net::DNS::RR->new( $rr_string ); |
199
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if ($ans_rr){ |
200
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push @{$answerdb{$query_name}->{$query_type}->{'answer'}}, $ans_rr; |
201
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}else{ |
202
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$errorcondition= " Could not parse $rr_string\n"; |
203
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return 0; |
204
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} |
205
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} |
206
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foreach my $ans ($qtype->findnodes('aut')){ |
207
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my $rr_string=$ans->findvalue("."); |
208
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next if $rr_string =~ /^\s*$/; |
209
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$rr_string =~s/\n//g; |
210
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my $ans_rr= Net::DNS::RR->new( $rr_string ); |
211
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if ($ans_rr){ |
212
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push @{$answerdb{$query_name}->{$query_type}->{'authority'}}, $ans_rr; |
213
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}else{ |
214
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$errorcondition= " Could not parse $rr_string\n"; |
215
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return 0; |
216
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} |
217
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} |
218
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foreach my $ans ($qtype->findnodes('add')){ |
219
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my $rr_string=$ans->findvalue("."); |
220
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next if $rr_string =~ /^\s*$/; |
221
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$rr_string =~s/\n//g; |
222
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my $ans_rr= Net::DNS::RR->new( $rr_string ); |
223
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if ($ans_rr){ |
224
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push @{$answerdb{$query_name}->{$query_type}->{'additional'}}, $ans_rr; |
225
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}else{ |
226
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$errorcondition= " Could not parse $rr_string\n"; |
227
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return 0; |
228
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} |
229
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} |
230
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231
|
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if ( my @opt=($qtype->findnodes('opt'))){ |
232
|
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|
my $optrr; |
233
|
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|
|
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|
234
|
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235
|
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|
my $size=$opt[0]->findvalue('@size'); |
236
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|
die "Sorry $size should be specified" unless defined $size; |
237
|
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238
|
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|
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|
my @flag=$opt[0]->findnodes('flag'); |
239
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|
|
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|
my $ednsflags=pack("n",0); |
240
|
|
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|
|
|
|
if (@flag) { |
241
|
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|
my $flagvalue=$flag[0]->findvalue('@value'); |
242
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|
|
|
if ($flagvalue =~ /^\s*\d+\s*$/){ |
243
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|
$ednsflags=$flagvalue; |
244
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|
|
}elsif($flagvalue =~ /\s*0x(.+)\s*/i){ |
245
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|
$ednsflags= |
246
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|
unpack("n",pack("H*",$1)); |
247
|
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248
|
|
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|
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}else{ |
249
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|
die "Sorry I could not parse $flagvalue\n"; |
250
|
|
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|
|
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|
} |
251
|
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|
|
252
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|
253
|
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|
print "EDNSFLAGS: ". sprintf("0x%04x", $ednsflags) ."\n" if $self->{'verbose'}; |
254
|
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|
|
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|
255
|
|
|
|
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|
|
}else{ |
256
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|
# Since we only have one option we'll do an |
257
|
|
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|
|
|
|
# assignment. |
258
|
|
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|
|
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|
my @options=$opt[0]->findnodes("options"); |
259
|
|
|
|
|
|
|
my $dobit=$options[0]->findvalue('@do'); |
260
|
|
|
|
|
|
|
$ednsflags = 0x8000 if $dobit; |
261
|
|
|
|
|
|
|
} |
262
|
|
|
|
|
|
|
|
263
|
|
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|
|
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|
$optrr= Net::DNS::RR->new( |
264
|
|
|
|
|
|
|
Type => 'OPT', |
265
|
|
|
|
|
|
|
Name => '', |
266
|
|
|
|
|
|
|
Class => $size, # Decimal UDPpayload |
267
|
|
|
|
|
|
|
ednsflags => $ednsflags, # first bit set see RFC 3225 |
268
|
|
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|
|
|
|
); |
269
|
|
|
|
|
|
|
|
270
|
|
|
|
|
|
|
push @{$answerdb{$query_name}->{$query_type}->{'additional'}}, $optrr; |
271
|
|
|
|
|
|
|
|
272
|
|
|
|
|
|
|
} |
273
|
|
|
|
|
|
|
} # end not @raw |
274
|
|
|
|
|
|
|
|
275
|
|
|
|
|
|
|
} |
276
|
|
|
|
|
|
|
|
277
|
|
|
|
|
|
|
|
278
|
|
|
|
|
|
|
|
279
|
|
|
|
|
|
|
} |
280
|
|
|
|
|
|
|
|
281
|
|
|
|
|
|
|
|
282
|
|
|
|
|
|
|
# The XML has been parsed and all info sits in the %answer db.. |
283
|
|
|
|
|
|
|
# We now construct the reply handler using that. |
284
|
|
|
|
|
|
|
my $reply_handler = sub { |
285
|
|
|
|
|
|
|
my ($qname, $qclass, $qtype) = @_; |
286
|
|
|
|
|
|
|
$qname.="." if $qname !~ /\.$/; |
287
|
|
|
|
|
|
|
my ($rcode, @ans, @auth, @add); |
288
|
|
|
|
|
|
|
if ( exists $answerdb{$qname}->{$qtype}){ |
289
|
|
|
|
|
|
|
$rcode= $answerdb{$qname}->{$qtype}->{'rcode'}; |
290
|
|
|
|
|
|
|
my $transporthash= { |
291
|
|
|
|
|
|
|
'aa' => |
292
|
|
|
|
|
|
|
$answerdb{$qname}->{$qtype}-> |
293
|
|
|
|
|
|
|
{'header'}->{'aa'}, |
294
|
|
|
|
|
|
|
'ra' => |
295
|
|
|
|
|
|
|
$answerdb{$qname}->{$qtype}-> |
296
|
|
|
|
|
|
|
{'header'}->{'ra'}, |
297
|
|
|
|
|
|
|
}; |
298
|
|
|
|
|
|
|
|
299
|
|
|
|
|
|
|
foreach my $headerfield qw(aa qr ad rd tc id cd |
300
|
|
|
|
|
|
|
qdcount ancount nscount arcount ){ |
301
|
|
|
|
|
|
|
$transporthash->{$headerfield}= $answerdb{$qname}->{$qtype}-> |
302
|
|
|
|
|
|
|
{'header'}->{$headerfield} if defined |
303
|
|
|
|
|
|
|
$answerdb{$qname}->{$qtype}->{'header'}->{$headerfield} ; |
304
|
|
|
|
|
|
|
} |
305
|
|
|
|
|
|
|
|
306
|
|
|
|
|
|
|
print "Sleeping for " . $answerdb{$qname}->{$qtype}->{'delay'} |
307
|
|
|
|
|
|
|
. " seconds " |
308
|
|
|
|
|
|
|
if $self->{verbose} && $answerdb{$qname}->{$qtype}->{'delay'}; |
309
|
|
|
|
|
|
|
|
310
|
|
|
|
|
|
|
sleep ($answerdb{$qname}->{$qtype}->{'delay'}); |
311
|
|
|
|
|
|
|
|
312
|
|
|
|
|
|
|
if (defined($answerdb{$qname}->{$qtype}->{'raw'})){ |
313
|
|
|
|
|
|
|
$transporthash->{'raw'}=$answerdb{$qname}->{$qtype}->{'raw'}; |
314
|
|
|
|
|
|
|
} |
315
|
|
|
|
|
|
|
|
316
|
|
|
|
|
|
|
|
317
|
|
|
|
|
|
|
return ($rcode, $answerdb{$qname}->{$qtype}->{'answer'}, |
318
|
|
|
|
|
|
|
$answerdb{$qname}->{$qtype}->{'authority'}, |
319
|
|
|
|
|
|
|
$answerdb{$qname}->{$qtype}->{'additional'}, |
320
|
|
|
|
|
|
|
$transporthash); |
321
|
|
|
|
|
|
|
|
322
|
|
|
|
|
|
|
} |
323
|
|
|
|
|
|
|
|
324
|
|
|
|
|
|
|
return ("SERVFAIL"); |
325
|
|
|
|
|
|
|
}; |
326
|
|
|
|
|
|
|
print "Setting up server for: $ip,$port\n" if $self->{verbose}; |
327
|
|
|
|
|
|
|
|
328
|
|
|
|
|
|
|
|
329
|
|
|
|
|
|
|
my $ns; |
330
|
|
|
|
|
|
|
$ns= Net::DNS::TestNS::Nameserver->new( |
331
|
|
|
|
|
|
|
LocalPort => $port, |
332
|
|
|
|
|
|
|
LocalAddr => $ip, |
333
|
|
|
|
|
|
|
ReplyHandler => $reply_handler, |
334
|
|
|
|
|
|
|
Verbose => $self->{verbose}, |
335
|
|
|
|
|
|
|
); |
336
|
|
|
|
|
|
|
|
337
|
|
|
|
|
|
|
|
338
|
|
|
|
|
|
|
if (! $ns ){ |
339
|
|
|
|
|
|
|
$errorcondition="Could not create Nameserver object"; |
340
|
|
|
|
|
|
|
return 0; |
341
|
|
|
|
|
|
|
} |
342
|
|
|
|
|
|
|
|
343
|
|
|
|
|
|
|
$self->{'serverinstance'}->[$servercount]->{'server'}=$ns; |
344
|
|
|
|
|
|
|
$self->{'serverinstance'}->[$servercount]->{'_child_pid'}="_not_running"; |
345
|
|
|
|
|
|
|
$servercount++; |
346
|
|
|
|
|
|
|
} #end looping over all servers. |
347
|
|
|
|
|
|
|
|
348
|
|
|
|
|
|
|
|
349
|
|
|
|
|
|
|
|
350
|
|
|
|
|
|
|
$self->{'servercount'}=$servercount; |
351
|
|
|
|
|
|
|
# |
352
|
|
|
|
|
|
|
# Now dynamically set up the reply handler. |
353
|
|
|
|
|
|
|
# |
354
|
|
|
|
|
|
|
# |
355
|
|
|
|
|
|
|
return bless $self, $class; |
356
|
|
|
|
|
|
|
|
357
|
|
|
|
|
|
|
} |
358
|
|
|
|
|
|
|
|
359
|
|
|
|
|
|
|
|
360
|
|
|
|
|
|
|
|
361
|
|
|
|
|
|
|
sub run { |
362
|
|
|
|
|
|
|
my $self=shift; |
363
|
|
|
|
|
|
|
my $servercount=0; |
364
|
|
|
|
|
|
|
|
365
|
|
|
|
|
|
|
while ( $servercount < $self->{'servercount'} ){ |
366
|
|
|
|
|
|
|
|
367
|
|
|
|
|
|
|
if ($self->{'serverinstance'}->[$servercount]->{'_child_pid'} ne |
368
|
|
|
|
|
|
|
"_not_running" ){ |
369
|
|
|
|
|
|
|
print "This instance allready has a server running\n"; |
370
|
|
|
|
|
|
|
return ; |
371
|
|
|
|
|
|
|
} |
372
|
|
|
|
|
|
|
|
373
|
|
|
|
|
|
|
|
374
|
|
|
|
|
|
|
my $pid; |
375
|
|
|
|
|
|
|
FORK: { |
376
|
|
|
|
|
|
|
no strict 'subs'; # EAGAIN |
377
|
|
|
|
|
|
|
if ($pid=fork) {# assign result of fork to $pid, |
378
|
|
|
|
|
|
|
# see if it is non-zero. |
379
|
|
|
|
|
|
|
# Parent process here |
380
|
|
|
|
|
|
|
# Child pid is in $pid |
381
|
|
|
|
|
|
|
print "Child Process: ".$pid."\n" if $self->{verbose}; |
382
|
|
|
|
|
|
|
$self->{'serverinstance'}->[$servercount]->{'_child_pid'}=$pid; |
383
|
|
|
|
|
|
|
|
384
|
|
|
|
|
|
|
} elsif (defined($pid)) { |
385
|
|
|
|
|
|
|
# Child process here |
386
|
|
|
|
|
|
|
#parent process pid is available with getppid |
387
|
|
|
|
|
|
|
# exec will transfer control to the child process, |
388
|
|
|
|
|
|
|
# and will finish (exit) when the tar is done. |
389
|
|
|
|
|
|
|
|
390
|
|
|
|
|
|
|
#Verbose level is set during construction.. The verbose method |
391
|
|
|
|
|
|
|
# may have been called afterward. |
392
|
|
|
|
|
|
|
|
393
|
|
|
|
|
|
|
$self->{'serverinstance'}->[$servercount]->{'server'}->{"Verbose"}=$self->verbose; |
394
|
|
|
|
|
|
|
$self->{'serverinstance'}->[$servercount]->{'server'}->main_loop; |
395
|
|
|
|
|
|
|
} elsif ($! == EAGAIN) { |
396
|
|
|
|
|
|
|
# EAGAIN is the supposedly recoverable fork error |
397
|
|
|
|
|
|
|
sleep 5; |
398
|
|
|
|
|
|
|
redo FORK; |
399
|
|
|
|
|
|
|
}else { |
400
|
|
|
|
|
|
|
#weird fork error |
401
|
|
|
|
|
|
|
die "Can't fork: $!\n"; |
402
|
|
|
|
|
|
|
} |
403
|
|
|
|
|
|
|
} |
404
|
|
|
|
|
|
|
|
405
|
|
|
|
|
|
|
$servercount++; |
406
|
|
|
|
|
|
|
} |
407
|
|
|
|
|
|
|
1; |
408
|
|
|
|
|
|
|
|
409
|
|
|
|
|
|
|
} |
410
|
|
|
|
|
|
|
|
411
|
|
|
|
|
|
|
|
412
|
|
|
|
|
|
|
sub _preprocess_input { |
413
|
|
|
|
|
|
|
my $self=shift; |
414
|
|
|
|
|
|
|
my $outstring=shift; |
415
|
|
|
|
|
|
|
my $filename=shift; |
416
|
|
|
|
|
|
|
my $infile=new IO::File; |
417
|
|
|
|
|
|
|
if ($infile->open("< $filename")) { |
418
|
|
|
|
|
|
|
while (<$infile>){ |
419
|
|
|
|
|
|
|
if (/^(.*)()(.*)$/){ |
420
|
|
|
|
|
|
|
my $newfile=$3; |
421
|
|
|
|
|
|
|
print "including $newfile\n" if $self->{verbose}; |
422
|
|
|
|
|
|
|
$outstring= $outstring. $1; |
423
|
|
|
|
|
|
|
$outstring=$self->_preprocess_input($outstring,$newfile); |
424
|
|
|
|
|
|
|
return 0 unless $outstring; |
425
|
|
|
|
|
|
|
$outstring= $outstring. $4; |
426
|
|
|
|
|
|
|
}else{ |
427
|
|
|
|
|
|
|
$outstring= $outstring. $_; |
428
|
|
|
|
|
|
|
} |
429
|
|
|
|
|
|
|
} |
430
|
|
|
|
|
|
|
}else{ |
431
|
|
|
|
|
|
|
$errorcondition= "Could not open $filename during preporcessing"; |
432
|
|
|
|
|
|
|
return 0; |
433
|
|
|
|
|
|
|
} |
434
|
|
|
|
|
|
|
return $outstring; |
435
|
|
|
|
|
|
|
} |
436
|
|
|
|
|
|
|
|
437
|
|
|
|
|
|
|
|
438
|
|
|
|
|
|
|
sub verbose { |
439
|
|
|
|
|
|
|
my $self=shift; |
440
|
|
|
|
|
|
|
my $argument=shift; |
441
|
|
|
|
|
|
|
$self->{verbose}=$argument if defined($argument); |
442
|
|
|
|
|
|
|
return $self->{verbose}; |
443
|
|
|
|
|
|
|
} |
444
|
|
|
|
|
|
|
|
445
|
|
|
|
|
|
|
sub stop { |
446
|
|
|
|
|
|
|
my $self=shift; |
447
|
|
|
|
|
|
|
$self->medea(@_); |
448
|
|
|
|
|
|
|
} |
449
|
|
|
|
|
|
|
|
450
|
|
|
|
|
|
|
|
451
|
|
|
|
|
|
|
|
452
|
|
|
|
|
|
|
|
453
|
|
|
|
|
|
|
sub medea { |
454
|
|
|
|
|
|
|
my $self=shift; |
455
|
|
|
|
|
|
|
|
456
|
|
|
|
|
|
|
my $servercount=0; |
457
|
|
|
|
|
|
|
|
458
|
|
|
|
|
|
|
while ( $servercount < $self->{'servercount'} ){ |
459
|
|
|
|
|
|
|
|
460
|
|
|
|
|
|
|
if ($self->{'serverinstance'}->[$servercount]->{'_child_pid'} ne |
461
|
|
|
|
|
|
|
'_not_running'){ |
462
|
|
|
|
|
|
|
if ( kill(15, $self->{'serverinstance'}->[$servercount]->{'_child_pid'}) != 1 ){ |
463
|
|
|
|
|
|
|
die "UNABLE TO KILL CHILDREN. KILL ".$self->{'serverinstance'}->[$servercount]->{'_child_pid'}." BY HAND"; |
464
|
|
|
|
|
|
|
} |
465
|
|
|
|
|
|
|
|
466
|
|
|
|
|
|
|
print "Killed ".$self->{'serverinstance'}->[$servercount]->{"_child_pid"}."\n" if $self->{verbose}; |
467
|
|
|
|
|
|
|
$self->{'serverinstance'}->[$servercount]->{"_child_pid"}="_not_running"; |
468
|
|
|
|
|
|
|
|
469
|
|
|
|
|
|
|
} else { |
470
|
|
|
|
|
|
|
# The child is not running... |
471
|
|
|
|
|
|
|
} |
472
|
|
|
|
|
|
|
$servercount++; |
473
|
|
|
|
|
|
|
} |
474
|
|
|
|
|
|
|
} |
475
|
|
|
|
|
|
|
|
476
|
|
|
|
|
|
|
sub DESTROY { |
477
|
|
|
|
|
|
|
# Time for Greek Drama |
478
|
|
|
|
|
|
|
# All children should be killed... |
479
|
|
|
|
|
|
|
# |
480
|
|
|
|
|
|
|
my $self=shift; |
481
|
|
|
|
|
|
|
$self->medea; |
482
|
|
|
|
|
|
|
} |
483
|
|
|
|
|
|
|
|
484
|
|
|
|
|
|
|
|
485
|
|
|
|
|
|
|
|
486
|
|
|
|
|
|
|
|
487
|
|
|
|
|
|
|
sub AUTOLOAD { |
488
|
|
|
|
|
|
|
my ($self) = @_; |
489
|
|
|
|
|
|
|
|
490
|
|
|
|
|
|
|
my $name = $AUTOLOAD; |
491
|
|
|
|
|
|
|
$name =~ s/.*://; |
492
|
|
|
|
|
|
|
|
493
|
|
|
|
|
|
|
Carp::croak "$name: no such method" unless exists $self->{$name}; |
494
|
|
|
|
|
|
|
|
495
|
|
|
|
|
|
|
no strict q/refs/; |
496
|
|
|
|
|
|
|
|
497
|
|
|
|
|
|
|
# AUTOLOADER sets and reads existing variables. |
498
|
|
|
|
|
|
|
*{$AUTOLOAD} = sub { |
499
|
|
|
|
|
|
|
my ($self, $new_val) = @_; |
500
|
|
|
|
|
|
|
|
501
|
|
|
|
|
|
|
if (defined $new_val) { |
502
|
|
|
|
|
|
|
$self->{"$name"} = $new_val; |
503
|
|
|
|
|
|
|
} |
504
|
|
|
|
|
|
|
|
505
|
|
|
|
|
|
|
return $self->{"$name"}; |
506
|
|
|
|
|
|
|
}; |
507
|
|
|
|
|
|
|
|
508
|
|
|
|
|
|
|
goto &{$AUTOLOAD}; |
509
|
|
|
|
|
|
|
} |
510
|
|
|
|
|
|
|
|
511
|
|
|
|
|
|
|
|
512
|
|
|
|
|
|
|
|
513
|
|
|
|
|
|
|
|
514
|
|
|
|
|
|
|
|
515
|
|
|
|
|
|
|
|
516
|
|
|
|
|
|
|
BEGIN { |
517
|
|
|
|
|
|
|
$TESTNS_DTD_0=' |
518
|
|
|
|
|
|
|
|
519
|
|
|
|
|
|
|
|
520
|
|
|
|
|
|
|
|
521
|
|
|
|
|
|
|
|
522
|
|
|
|
|
|
|
|
523
|
|
|
|
|
|
|
|
524
|
|
|
|
|
|
|
|
525
|
|
|
|
|
|
|
|
526
|
|
|
|
|
|
|
|
527
|
|
|
|
|
|
|
|
528
|
|
|
|
|
|
|
|
529
|
|
|
|
|
|
|
|
530
|
|
|
|
|
|
|
|
531
|
|
|
|
|
|
|
|
532
|
|
|
|
|
|
|
|
533
|
|
|
|
|
|
|
|
534
|
|
|
|
|
|
|
|
535
|
|
|
|
|
|
|
|
536
|
|
|
|
|
|
|
|
537
|
|
|
|
|
|
|
|
538
|
|
|
|
|
|
|
|
539
|
|
|
|
|
|
|
|
540
|
|
|
|
|
|
|
|
541
|
|
|
|
|
|
|
|
542
|
|
|
|
|
|
|
|
543
|
|
|
|
|
|
|
|
544
|
|
|
|
|
|
|
'; |
545
|
|
|
|
|
|
|
|
546
|
|
|
|
|
|
|
|
547
|
|
|
|
|
|
|
# Note: generateDTDpod.pl asumes the DTD is stored as $TESNS_DTD and |
548
|
|
|
|
|
|
|
# has a rather "loose" way to determine the begin and the end of the |
549
|
|
|
|
|
|
|
# string. Start: if (s/\$TESTNS_DTD=\'//){ End: if (s/\'\;//){ |
550
|
|
|
|
|
|
|
|
551
|
|
|
|
|
|
|
$TESTNS_DTD=' |
552
|
|
|
|
|
|
|
|
553
|
|
|
|
|
|
|
|
554
|
|
|
|
|
|
|
|
555
|
|
|
|
|
|
|
|
556
|
|
|
|
|
|
|
|
557
|
|
|
|
|
|
|
|
558
|
|
|
|
|
|
|
|
559
|
|
|
|
|
|
|
|
560
|
|
|
|
|
|
|
|
561
|
|
|
|
|
|
|
|
562
|
|
|
|
|
|
|
|
563
|
|
|
|
|
|
|
|
564
|
|
|
|
|
|
|
|
565
|
|
|
|
|
|
|
|
566
|
|
|
|
|
|
|
|
567
|
|
|
|
|
|
|
|
568
|
|
|
|
|
|
|
|
569
|
|
|
|
|
|
|
|
570
|
|
|
|
|
|
|
|
571
|
|
|
|
|
|
|
|
572
|
|
|
|
|
|
|
|
573
|
|
|
|
|
|
|
|
574
|
|
|
|
|
|
|
|
575
|
|
|
|
|
|
|
|
576
|
|
|
|
|
|
|
|
577
|
|
|
|
|
|
|
|
578
|
|
|
|
|
|
|
|
579
|
|
|
|
|
|
|
|
580
|
|
|
|
|
|
|
|
581
|
|
|
|
|
|
|
|
582
|
|
|
|
|
|
|
|
583
|
|
|
|
|
|
|
|
584
|
|
|
|
|
|
|
|
585
|
|
|
|
|
|
|
|
586
|
|
|
|
|
|
|
|
587
|
|
|
|
|
|
|
|
588
|
|
|
|
|
|
|
|
589
|
|
|
|
|
|
|
|
590
|
|
|
|
|
|
|
|
591
|
|
|
|
|
|
|
|
592
|
|
|
|
|
|
|
((question?,ans*,aut*,add*,opt?) |
593
|
|
|
|
|
|
|
|raw) |
594
|
|
|
|
|
|
|
)> |
595
|
|
|
|
|
|
|
|
596
|
|
|
|
|
|
|
|
597
|
|
|
|
|
|
|
|
598
|
|
|
|
|
|
|
|
599
|
|
|
|
|
|
|
|
600
|
|
|
|
|
|
|
|
601
|
|
|
|
|
|
|
|
602
|
|
|
|
|
|
|
ad?, cd?, qr?,rd?,tc?,id?, |
603
|
|
|
|
|
|
|
qdcount?,ancount?,nscount?,arcount?)> |
604
|
|
|
|
|
|
|
|
605
|
|
|
|
|
|
|
|
606
|
|
|
|
|
|
|
|
607
|
|
|
|
|
|
|
|
608
|
|
|
|
|
|
|
|
609
|
|
|
|
|
|
|
|
610
|
|
|
|
|
|
|
|
611
|
|
|
|
|
|
|
|
612
|
|
|
|
|
|
|
|
613
|
|
|
|
|
|
|
|
614
|
|
|
|
|
|
|
|
615
|
|
|
|
|
|
|
|
616
|
|
|
|
|
|
|
|
617
|
|
|
|
|
|
|
|
618
|
|
|
|
|
|
|
|
619
|
|
|
|
|
|
|
|
620
|
|
|
|
|
|
|
|
621
|
|
|
|
|
|
|
|
622
|
|
|
|
|
|
|
|
623
|
|
|
|
|
|
|
|
624
|
|
|
|
|
|
|
|
625
|
|
|
|
|
|
|
|
626
|
|
|
|
|
|
|
|
627
|
|
|
|
|
|
|
|
628
|
|
|
|
|
|
|
|
629
|
|
|
|
|
|
|
|
630
|
|
|
|
|
|
|
|
631
|
|
|
|
|
|
|
|
632
|
|
|
|
|
|
|
|
633
|
|
|
|
|
|
|
|
634
|
|
|
|
|
|
|
|
635
|
|
|
|
|
|
|
|
636
|
|
|
|
|
|
|
|
637
|
|
|
|
|
|
|
|
638
|
|
|
|
|
|
|
|
639
|
|
|
|
|
|
|
|
640
|
|
|
|
|
|
|
|
641
|
|
|
|
|
|
|
|
642
|
|
|
|
|
|
|
|
643
|
|
|
|
|
|
|
|
644
|
|
|
|
|
|
|
|
645
|
|
|
|
|
|
|
|
646
|
|
|
|
|
|
|
|
647
|
|
|
|
|
|
|
|
648
|
|
|
|
|
|
|
|
649
|
|
|
|
|
|
|
|
650
|
|
|
|
|
|
|
|
651
|
|
|
|
|
|
|
|
652
|
|
|
|
|
|
|
|
653
|
|
|
|
|
|
|
|
654
|
|
|
|
|
|
|
|
655
|
|
|
|
|
|
|
|
656
|
|
|
|
|
|
|
|
657
|
|
|
|
|
|
|
|
658
|
|
|
|
|
|
|
|
659
|
|
|
|
|
|
|
|
660
|
|
|
|
|
|
|
|
661
|
|
|
|
|
|
|
|
662
|
|
|
|
|
|
|
|
663
|
|
|
|
|
|
|
|
664
|
|
|
|
|
|
|
|
665
|
|
|
|
|
|
|
|
666
|
|
|
|
|
|
|
|
667
|
|
|
|
|
|
|
|
668
|
|
|
|
|
|
|
|
669
|
|
|
|
|
|
|
|
670
|
|
|
|
|
|
|
|
671
|
|
|
|
|
|
|
|
672
|
|
|
|
|
|
|
|
673
|
|
|
|
|
|
|
|
674
|
|
|
|
|
|
|
|
675
|
|
|
|
|
|
|
|
676
|
|
|
|
|
|
|
|
677
|
|
|
|
|
|
|
|
678
|
|
|
|
|
|
|
|
679
|
|
|
|
|
|
|
|
680
|
|
|
|
|
|
|
|
681
|
|
|
|
|
|
|
|
682
|
|
|
|
|
|
|
|
683
|
|
|
|
|
|
|
|
684
|
|
|
|
|
|
|
'; |
685
|
|
|
|
|
|
|
|
686
|
|
|
|
|
|
|
$TESTNS_DTD_1_0=$TESTNS_DTD; |
687
|
|
|
|
|
|
|
|
688
|
|
|
|
|
|
|
} #END BEGIN |
689
|
|
|
|
|
|
|
|
690
|
|
|
|
|
|
|
|
691
|
|
|
|
|
|
|
|
692
|
|
|
|
|
|
|
|
693
|
|
|
|
|
|
|
|
694
|
|
|
|
|
|
|
|
695
|
|
|
|
|
|
|
|
696
|
|
|
|
|
|
|
|
697
|
|
|
|
|
|
|
=head1 NAME |
698
|
|
|
|
|
|
|
|
699
|
|
|
|
|
|
|
Net::DNS::TestNS - Perl extension for simulating simple Nameservers |
700
|
|
|
|
|
|
|
|
701
|
|
|
|
|
|
|
=head1 SYNOPSIS |
702
|
|
|
|
|
|
|
|
703
|
|
|
|
|
|
|
use Net::DNS::TestNS; |
704
|
|
|
|
|
|
|
|
705
|
|
|
|
|
|
|
|
706
|
|
|
|
|
|
|
=head1 ABSTRACT |
707
|
|
|
|
|
|
|
|
708
|
|
|
|
|
|
|
Class for setting up "simple DNS" servers. |
709
|
|
|
|
|
|
|
|
710
|
|
|
|
|
|
|
=head1 DESCRIPTION |
711
|
|
|
|
|
|
|
|
712
|
|
|
|
|
|
|
Class to setup a number of nameservers that respond to specific DNS |
713
|
|
|
|
|
|
|
queries (QNAME,QTYPE) by prespecified answers. This class is to be |
714
|
|
|
|
|
|
|
used in test suites where you want to have servers to show predefined |
715
|
|
|
|
|
|
|
behavior. |
716
|
|
|
|
|
|
|
|
717
|
|
|
|
|
|
|
If the server will do a lookup based on QNAME,QTYPE and return the |
718
|
|
|
|
|
|
|
specified data. If there is no QNAME, QTYPE match the server will |
719
|
|
|
|
|
|
|
return a SERVFAIL. |
720
|
|
|
|
|
|
|
|
721
|
|
|
|
|
|
|
A log will be written to STDERR it contains time, IP/PORT, QNAME, |
722
|
|
|
|
|
|
|
QTYPE, RCODE |
723
|
|
|
|
|
|
|
|
724
|
|
|
|
|
|
|
=head2 Configuration file |
725
|
|
|
|
|
|
|
|
726
|
|
|
|
|
|
|
The class uses an XML file to read its configuration. The DTD is documented |
727
|
|
|
|
|
|
|
in L. |
728
|
|
|
|
|
|
|
|
729
|
|
|
|
|
|
|
|
730
|
|
|
|
|
|
|
The setup is split in a number of servers, each with a unique IP/port |
731
|
|
|
|
|
|
|
number, each server has 1 or more QNAMEs it will respond to. Each |
732
|
|
|
|
|
|
|
QNAME can have QTYPEs specified. |
733
|
|
|
|
|
|
|
|
734
|
|
|
|
|
|
|
For each QNAME,QTYPE an answer needs to be specified, response code |
735
|
|
|
|
|
|
|
and header bits can be tweaked through the qtype attributes. |
736
|
|
|
|
|
|
|
|
737
|
|
|
|
|
|
|
The content of the packet can be specified through ans, aut and add |
738
|
|
|
|
|
|
|
elements, each specifying one RR record to end up in the answer, |
739
|
|
|
|
|
|
|
authority or additional section. |
740
|
|
|
|
|
|
|
|
741
|
|
|
|
|
|
|
The optional 'delay' attribute in the QTYPE element specifies how many |
742
|
|
|
|
|
|
|
seconds the server should wait until an answer is returned. |
743
|
|
|
|
|
|
|
|
744
|
|
|
|
|
|
|
|
745
|
|
|
|
|
|
|
If the query does not match against data specified in the |
746
|
|
|
|
|
|
|
configuration a SERVFAIL is returned. |
747
|
|
|
|
|
|
|
|
748
|
|
|
|
|
|
|
=head2 new |
749
|
|
|
|
|
|
|
|
750
|
|
|
|
|
|
|
|
751
|
|
|
|
|
|
|
my $server=Net::DNS::TestNS->new($configfile, { |
752
|
|
|
|
|
|
|
Verbose => 1, |
753
|
|
|
|
|
|
|
Validate => 1, |
754
|
|
|
|
|
|
|
}); |
755
|
|
|
|
|
|
|
|
756
|
|
|
|
|
|
|
|
757
|
|
|
|
|
|
|
|
758
|
|
|
|
|
|
|
Read the configuration files and bind to ports. One can use anywhere inside the configuration file to include |
760
|
|
|
|
|
|
|
other XML configuration fragments. |
761
|
|
|
|
|
|
|
|
762
|
|
|
|
|
|
|
The second optional argument is hash that contains customization parameters. |
763
|
|
|
|
|
|
|
Verbose boolean Makes the code more verbose. |
764
|
|
|
|
|
|
|
Validate boolean Turns on XML validation based |
765
|
|
|
|
|
|
|
on the DTD |
766
|
|
|
|
|
|
|
The parser is flexible with |
767
|
|
|
|
|
|
|
respect to the ordering |
768
|
|
|
|
|
|
|
of some of the XML elements. |
769
|
|
|
|
|
|
|
The DTD is not. |
770
|
|
|
|
|
|
|
Validation is on by default. |
771
|
|
|
|
|
|
|
|
772
|
|
|
|
|
|
|
|
773
|
|
|
|
|
|
|
|
774
|
|
|
|
|
|
|
new returns the object reference on success and 0 on failure. On |
775
|
|
|
|
|
|
|
failure the class variable $Net::DNS::TestNS::errorcondition is set. |
776
|
|
|
|
|
|
|
|
777
|
|
|
|
|
|
|
|
778
|
|
|
|
|
|
|
|
779
|
|
|
|
|
|
|
=head2 verbose |
780
|
|
|
|
|
|
|
|
781
|
|
|
|
|
|
|
$self->verbose(1); |
782
|
|
|
|
|
|
|
|
783
|
|
|
|
|
|
|
Sets verbosity at run time. |
784
|
|
|
|
|
|
|
|
785
|
|
|
|
|
|
|
=head2 run |
786
|
|
|
|
|
|
|
|
787
|
|
|
|
|
|
|
Spawns off the servers and process the data. |
788
|
|
|
|
|
|
|
|
789
|
|
|
|
|
|
|
=head2 medea |
790
|
|
|
|
|
|
|
|
791
|
|
|
|
|
|
|
Cleanup function that kills all the children spawned by the |
792
|
|
|
|
|
|
|
instance. Also known by its alias 'stop'. |
793
|
|
|
|
|
|
|
|
794
|
|
|
|
|
|
|
=head1 Configuration file example |
795
|
|
|
|
|
|
|
|
796
|
|
|
|
|
|
|
|
797
|
|
|
|
|
|
|
|
798
|
|
|
|
|
|
|
|
799
|
|
|
|
|
|
|
|
800
|
|
|
|
|
|
|
|
801
|
|
|
|
|
|
|
|
802
|
|
|
|
|
|
|
|
803
|
|
|
|
|
|
|
|
804
|
|
|
|
|
|
|
|
805
|
|
|
|
|
|
|
|
806
|
|
|
|
|
|
|
|
807
|
|
|
|
|
|
|
|
808
|
|
|
|
|
|
|
|
809
|
|
|
|
|
|
|
|
810
|
|
|
|
|
|
|
|
811
|
|
|
|
|
|
|
|
812
|
|
|
|
|
|
|
|
813
|
|
|
|
|
|
|
|
814
|
|
|
|
|
|
|
bla.foo. 3600 IN TXT "TEXT" |
815
|
|
|
|
|
|
|
|
816
|
|
|
|
|
|
|
|
817
|
|
|
|
|
|
|
bla.foo. 3600 IN TXT "Other text" |
818
|
|
|
|
|
|
|
|
819
|
|
|
|
|
|
|
|
820
|
|
|
|
|
|
|
|
821
|
|
|
|
|
|
|
|
822
|
|
|
|
|
|
|
|
823
|
|
|
|
|
|
|
|
824
|
|
|
|
|
|
|
|
825
|
|
|
|
|
|
|
|
826
|
|
|
|
|
|
|
|
827
|
|
|
|
|
|
|
|
828
|
|
|
|
|
|
|
|
829
|
|
|
|
|
|
|
|
830
|
|
|
|
|
|
|
|
831
|
|
|
|
|
|
|
|
832
|
|
|
|
|
|
|
|
833
|
|
|
|
|
|
|
|
834
|
|
|
|
|
|
|
|
835
|
|
|
|
|
|
|
07 74726967676572 |
836
|
|
|
|
|
|
|
03 666f6f |
837
|
|
|
|
|
|
|
00 |
838
|
|
|
|
|
|
|
|
839
|
|
|
|
|
|
|
00 01 |
840
|
|
|
|
|
|
|
|
841
|
|
|
|
|
|
|
00 01 |
842
|
|
|
|
|
|
|
|
843
|
|
|
|
|
|
|
|
844
|
|
|
|
|
|
|
|
845
|
|
|
|
|
|
|
c0 0c |
846
|
|
|
|
|
|
|
00 01 |
847
|
|
|
|
|
|
|
00 01 |
848
|
|
|
|
|
|
|
00 00 00 05 |
849
|
|
|
|
|
|
|
00 04 |
850
|
|
|
|
|
|
|
0a 00 00 01 |
851
|
|
|
|
|
|
|
|
852
|
|
|
|
|
|
|
|
853
|
|
|
|
|
|
|
|
854
|
|
|
|
|
|
|
|
855
|
|
|
|
|
|
|
|
856
|
|
|
|
|
|
|
|
857
|
|
|
|
|
|
|
|
858
|
|
|
|
|
|
|
|
859
|
|
|
|
|
|
|
=head1 Known Deficiencies and TODO |
860
|
|
|
|
|
|
|
|
861
|
|
|
|
|
|
|
The module is based on Net::DNS::Nameserver. There is no way to |
862
|
|
|
|
|
|
|
distinguish if the query came over TCP or UDP; besides UDP truncation |
863
|
|
|
|
|
|
|
is not available in Net::DNS::Nameserver. |
864
|
|
|
|
|
|
|
|
865
|
|
|
|
|
|
|
Earlier versions of this script used a different DTD that had no |
866
|
|
|
|
|
|
|
version number. The script only validates against version 1.0 of the |
867
|
|
|
|
|
|
|
DTD but parses the old files. |
868
|
|
|
|
|
|
|
|
869
|
|
|
|
|
|
|
|
870
|
|
|
|
|
|
|
==head1 ALSO SEE |
871
|
|
|
|
|
|
|
L, L, L |
872
|
|
|
|
|
|
|
|
873
|
|
|
|
|
|
|
=head1 AUTHOR |
874
|
|
|
|
|
|
|
|
875
|
|
|
|
|
|
|
Olaf Kolkman, Eolaf@net-dns.org |
876
|
|
|
|
|
|
|
|
877
|
|
|
|
|
|
|
|
878
|
|
|
|
|
|
|
=head1 COPYRIGHT AND LICENSE |
879
|
|
|
|
|
|
|
|
880
|
|
|
|
|
|
|
Copyright (c) 2003-2005 RIPE NCC. Author Olaf M. Kolkman |
881
|
|
|
|
|
|
|
|
882
|
|
|
|
|
|
|
All Rights Reserved |
883
|
|
|
|
|
|
|
|
884
|
|
|
|
|
|
|
Permission to use, copy, modify, and distribute this software and its |
885
|
|
|
|
|
|
|
documentation for any purpose and without fee is hereby granted, |
886
|
|
|
|
|
|
|
provided that the above copyright notice appear in all copies and that |
887
|
|
|
|
|
|
|
both that copyright notice and this permission notice appear in |
888
|
|
|
|
|
|
|
supporting documentation, and that the name of the author not be |
889
|
|
|
|
|
|
|
used in advertising or publicity pertaining to distribution of the |
890
|
|
|
|
|
|
|
software without specific, written prior permission. |
891
|
|
|
|
|
|
|
|
892
|
|
|
|
|
|
|
|
893
|
|
|
|
|
|
|
THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING |
894
|
|
|
|
|
|
|
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS; IN NO EVENT SHALL |
895
|
|
|
|
|
|
|
AUTHOR BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY |
896
|
|
|
|
|
|
|
DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN |
897
|
|
|
|
|
|
|
AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
898
|
|
|
|
|
|
|
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
899
|
|
|
|
|
|
|
|
900
|
|
|
|
|
|
|
|
901
|
|
|
|
|
|
|
=cut |
902
|
|
|
|
|
|
|
|
903
|
|
|
|
|
|
|
|
904
|
|
|
|
|
|
|
|
905
|
|
|
|
|
|
|
1; |
906
|
|
|
|
|
|
|
__END__ |