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# $Id: 07-zonefile.t 1709 2018-09-07 08:03:09Z willem $ -*-perl-*-
use strict;
use IO::File;
use Test::More tests => 91;
## vvv verbatim from Domain.pm
use constant ASCII => ref eval {
require Encode;
Encode::find_encoding('ascii');
};
use constant UTF8 => scalar eval { ## not UTF-EBCDIC [see UTR#16 3.6]
Encode::encode_utf8( chr(182) ) eq pack( 'H*', 'C2B6' );
};
use constant LIBIDN => defined eval 'require Net::LibIDN';
use constant LIBIDN2 => ref eval 'require Net::LibIDN2; Net::LibIDN2->can("idn2_to_ascii_8")';
## ^^^ verbatim from Domain.pm
use constant LIBIDNOK => LIBIDN && scalar eval {
my $cn = pack( 'U*', 20013, 22269 );
Net::LibIDN::idn_to_ascii( $cn, 'utf-8' ) eq 'xn--fiqs8s';
};
use constant LIBIDN2OK => LIBIDN2 && scalar eval {
my $cn = pack( 'U*', 20013, 22269 );
Net::LibIDN2::idn2_to_ascii_8( $cn, 9 ) eq 'xn--fiqs8s';
};
use_ok('Net::DNS::ZoneFile');
my @file;
my $seq;
END {
unlink $_ foreach @file;
}
sub source { ## zone file builder
my $text = shift;
my @args = @_;
my $tag = ++$seq;
my $file = "zone$tag.txt";
my $handle = new IO::File( $file, '>' ); # create test file
die "Failed to create $file" unless $handle;
eval { binmode($handle) }; # suppress encoding layer
push @file, $file;
print $handle $text;
close $handle;
return new Net::DNS::ZoneFile( $file, @args );
}
my $recursive = join ' ', '$INCLUDE', source('$INCLUDE zone1.txt')->name;
{
eval { new Net::DNS::ZoneFile(undef); };
my $exception = $1 if $@ =~ /^(.+)\n/;
ok( $exception ||= '', "new(): invalid argument\t[$exception]" );
}
{
eval { new Net::DNS::ZoneFile( [] ); };
my $exception = $1 if $@ =~ /^(.+)\n/;
ok( $exception ||= '', "new(): not a file handle\t[$exception]" );
}
{
eval { new Net::DNS::ZoneFile('zone0.txt'); }; # presumed not to exist
my $exception = $1 if $@ =~ /^(.+)\n/;
ok( $exception ||= '', "new(): non-existent file\t[$exception]" );
}
{ ## public methods
my $zonefile = source('');
ok( $zonefile->isa('Net::DNS::ZoneFile'), 'new ZoneFile object' );
ok( defined $zonefile->name, 'zonefile->name always defined' );
ok( defined $zonefile->line, 'zonefile->line always defined' );
ok( defined $zonefile->origin, 'zonefile->origin always defined' );
ok( !defined $zonefile->ttl, 'zonefile->ttl initially undefined' );
my @rr = $zonefile->read;
is( scalar(@rr), 0, 'zonefile->read to end of file' );
is( $zonefile->line, 0, 'zonefile->line zero if file empty' );
is( $zonefile->origin, '.', 'zonefile->origin defaults to DNS root' );
}
{ ## initial origin
my $tld = 'test';
my $absolute = source( '', "$tld." );
is( $absolute->origin, "$tld.", 'new ZoneFile with absolute origin' );
my $relative = source( '', "$tld" );
is( $relative->origin, "$tld.", 'new ZoneFile->origin always absolute' );
}
{ ## line numbering
my $lines = 10;
my $zonefile = source( "\n" x $lines );
is( $zonefile->line, 0, 'zonefile->line zero before calling read()' );
my @rr = $zonefile->read;
is( $zonefile->line, $lines, 'zonefile->line number incremented by read()' );
}
{
my $zonefile = source <<'EOF';
$TTL
EOF
eval { $zonefile->read; };
my $exception = $1 if $@ =~ /^(.+)\n/;
ok( $exception ||= '', "exception:\t[$exception]" );
}
{
my $zonefile = source <<'EOF';
$INCLUDE
EOF
eval { $zonefile->read; };
my $exception = $1 if $@ =~ /^(.+)\n/;
ok( $exception ||= '', "exception:\t[$exception]" );
}
{
my $zonefile = source <<'EOF';
$ORIGIN
EOF
eval { $zonefile->read; };
my $exception = $1 if $@ =~ /^(.+)\n/;
ok( $exception ||= '', "exception:\t[$exception]" );
}
{
my $zonefile = source <<'EOF';
$GENERATE
EOF
eval { $zonefile->read; };
my $exception = $1 if $@ =~ /^(.+)\n/;
ok( $exception ||= '', "exception:\t[$exception]" );
}
{
my $zonefile = source <<'EOF';
$BOGUS
EOF
eval { $zonefile->read; };
my $exception = $1 if $@ =~ /^(.+)\n/;
ok( $exception ||= '', "exception:\t[$exception]" );
}
{ ## $TTL directive at start of zone file
my $zonefile = source <<'EOF';
$TTL 54321
rr0 SOA mname rname 99 6h 1h 1w 12345
EOF
is( $zonefile->read->ttl, 54321, 'SOA TTL set from $TTL directive' );
}
{ ## no $TTL directive, default implicit
my $zonefile = source <<'EOF';
rr0 SOA mname rname 99 6h 1h 1w 0
rr1 NULL
EOF
is( $zonefile->read->ttl, 0, 'SOA TTL set from zero SOA minimum field' );
is( $zonefile->read->ttl, 0, 'implicit zero default from SOA record' );
}
{ ## $TTL directive following implicit default
my $zonefile = source <<'EOF';
rr0 SOA mname rname 99 6h 1h 1w 12345
rr1 NULL
$TTL 54321
rr2 NULL
rr3 3h NULL
EOF
is( $zonefile->read->ttl, 12345, 'SOA TTL set from SOA minimum field' );
is( $zonefile->read->ttl, 12345, 'implicit default from SOA record' );
is( $zonefile->read->ttl, 54321, 'explicit default from $TTL directive' );
is( $zonefile->read->ttl, 10800, 'explicit TTL value overrides default' );
is( $zonefile->ttl, 54321, '$zonefile->ttl set from $TTL directive' );
}
{ ## $INCLUDE directive
my $include = source <<'EOF';
rr2 NULL
EOF
my $directive = join ' ', '$INCLUDE', $include->name, '.';
my $misdirect = join ' ', '$INCLUDE zone0.txt ; presumed not to exist';
my $zonefile = source <<"EOF";
rr1 NULL
$directive
rr3 NULL
$recursive
$misdirect
EOF
my $fn1 = $zonefile->name;
my $rr1 = $zonefile->read;
is( $rr1->name, 'rr1', 'zonefile->read expected record' );
is( $zonefile->name, $fn1, 'zonefile->name identifies file' );
is( $zonefile->line, 1, 'zonefile->line identifies record' );
my $fn2 = $include->name;
my $rr2 = $zonefile->read;
my $sfx = $zonefile->origin;
is( $rr2->name, 'rr2', 'zonefile->read expected record' );
is( $zonefile->name, $fn2, 'zonefile->name identifies file' );
is( $zonefile->line, 1, 'zonefile->line identifies record' );
my $rr3 = $zonefile->read;
is( $rr3->name, 'rr3', 'zonefile->read expected record' );
is( $zonefile->name, $fn1, 'zonefile->name identifies file' );
is( $zonefile->line, 3, 'zonefile->line identifies record' );
{
my @rr = eval { $zonefile->read };
my $exception = $1 if $@ =~ /^(.+)\n/;
ok( $exception ||= '', "recursive include\t[$exception]" );
}
{
my @rr = eval { $zonefile->read };
my $exception = $1 if $@ =~ /^(.+)\n/;
ok( $exception ||= '', "non-existent include\t[$exception]" );
}
is( $zonefile->name, $fn1, 'zonefile->name identifies file' );
is( $zonefile->line, 5, 'zonefile->line identifies directive' );
}
my $zonefile;
{ ## $ORIGIN directive
my $nested = source <<'EOF';
nested NULL
EOF
my $origin = 'example.com';
my $ORIGIN = '$ORIGIN';
my $inner = join ' ', '$INCLUDE', $nested->name;
my $include = source <<"EOF";
$ORIGIN $origin
@ NS host
$inner
@ NULL
$ORIGIN relative
@ NULL
EOF
my $outer = join ' ', '$INCLUDE', $include->name;
$zonefile = source <<"EOF";
$outer
outer NULL
$ORIGIN $origin
NULL
EOF
my $ns = $zonefile->read;
is( $ns->name, $origin, '@ NS has expected name' );
is( $ns->nsdname, "host.$origin", '@ NS has expected rdata' );
my $rr = $zonefile->read;
my $expect = join '.', 'nested', $origin;
is( $rr->name, $expect, 'scope of $ORIGIN encompasses nested $INCLUDE' );
is( $zonefile->read->name, $origin, 'scope of $ORIGIN continues after $INCLUDE' );
is( $zonefile->read->name, "relative.$origin", '$ORIGIN can be relative to current $ORIGIN' );
is( $zonefile->read->name, 'outer', 'scope of $ORIGIN curtailed by end of file' );
is( $zonefile->read->name, $origin, 'implicit owner following $ORIGIN directive' );
}
{ ## $GENERATE directive
my $zonefile = source <<'EOF';
$GENERATE 0-0 @ TXT $
$GENERATE 10-30/10 @ TXT $
$GENERATE 30-10/-10 @ TXT $
$GENERATE 123-123 @ TXT ${,,}
$GENERATE 123-123 @ TXT ${0,0,d}
$GENERATE 123-123 @ TXT ${0,0,o}
$GENERATE 123-123 @ TXT ${0,0,x}
$GENERATE 123-123 @ TXT ${0,0,X}
$GENERATE 123-123 @ TXT ${0,4,X}
$GENERATE 123-123 @ TXT ${4096,4,X}
$GENERATE 11259375 @ TXT ${0,6,n}
$GENERATE 11259375 @ TXT ${0,16,N}
$GENERATE 0-0 @ TXT ${0,0,Z}
EOF
is( $zonefile->read->rdstring, '0', 'generate TXT $' );
is( $zonefile->read->rdstring, '10', 'generate TXT $ with step 10' );
is( $zonefile->read->rdstring, '20', 'generate TXT $ with step 10' );
is( $zonefile->read->rdstring, '30', 'generate TXT $ with step 10' );
is( $zonefile->read->rdstring, '30', 'generate TXT $ with step -10' );
is( $zonefile->read->rdstring, '20', 'generate TXT $ with step -10' );
is( $zonefile->read->rdstring, '10', 'generate TXT $ with step -10' );
is( $zonefile->read->rdstring, '123', 'generate TXT ${,,}' );
is( $zonefile->read->rdstring, '123', 'generate TXT ${0,0,d}' );
is( $zonefile->read->rdstring, '173', 'generate TXT ${0,0,o}' );
is( $zonefile->read->rdstring, '7b', 'generate TXT ${0,0,x}' );
is( $zonefile->read->rdstring, '7B', 'generate TXT ${0,0,X}' );
is( $zonefile->read->rdstring, '007B', 'generate TXT ${0,4,X}' );
is( $zonefile->read->rdstring, '107B', 'generate TXT ${4096,4,X}' );
is( $zonefile->read->rdstring, 'f.e.d.', 'generate TXT ${0,6,n}' );
is( $zonefile->read->rdstring, 'F.E.D.C.B.A.0.0.', 'generate TXT ${0,16,N}' );
eval { $zonefile->read; };
my $exception = $1 if $@ =~ /^(.+)\n/;
ok( $exception ||= '', "unknown format:\t[$exception]" );
}
{
my $zonefile = source <<'EOF';
$TTL 1234
$ORIGIN example.
hosta A 192.0.2.1
; whole line comment
; indented comment
; vvv empty line
; ^^^ empty line
; vvv line with white space
; ^^^ line with white space
MX 10 hosta ; end of line comment
TXT ( multiline ; interspersed ( mischievously )
resource ; with ( confusing )
record ) ; comments
TXT (string)
TXT "(string)"
EOF
is( $zonefile->read->name, 'hosta.example', 'name of simple RR as expected' );
is( $zonefile->read->name, 'hosta.example', 'name of simple RR propagated from previous RR' );
my $multilineRR = $zonefile->read;
is( $multilineRR->name, 'hosta.example', 'name of multiline RR propagated from previous RR' );
is( $multilineRR->txtdata, 'multiline resource record', 'multiline RR correctly reassembled' );
my $following = $zonefile->read;
is( $following->name, 'hosta.example', 'name of following RR as expected' );
is( $following->txtdata, 'string', 'superfluous brackets ignored' );
is( $zonefile->read->txtdata, '(string)', 'quoted brackets protected' );
}
{ ## CLASS coersion
my $zonefile = source <<'EOF';
rr0 CH NULL
rr1 CLASS1 NULL
rr2 CLASS2 NULL
rr3 CLASS3 NULL
EOF
my $rr = $zonefile->read;
foreach ( $zonefile->read ) {
is( $_->class, $rr->class, 'rr->class matches initial record' );
}
}
{ ## compatibility with defunct Net::DNS::ZoneFile 1.04 distro
my $listref = Net::DNS::ZoneFile->read( $zonefile->name );
ok( scalar(@$listref), 'read(): entire zone file' );
}
{
my $listref = Net::DNS::ZoneFile->read( $zonefile->name, '.' );
ok( scalar(@$listref), 'read(): zone file via path' );
}
{
eval {
local $SIG{__WARN__} = sub { }; # presumed not to exist
my $listref = Net::DNS::ZoneFile->read( '/zone0.txt', '.' );
};
my $exception = $1 if $@ =~ /^(.+)\n/;
ok( $exception ||= '', "read(): non-existent file\t[$exception]" );
}
{
eval {
local $SIG{__WARN__} = sub { }; # presumed not to exist
my $listref = Net::DNS::ZoneFile->read( 'zone0.txt', 't' );
};
my $exception = $1 if $@ =~ /^(.+)\n/;
ok( $exception ||= '', "read(): non-existent file\t[$exception]" );
}
{
my $listref = Net::DNS::ZoneFile::read( $zonefile->name, '.' );
ok( scalar(@$listref), 'read(): direct subroutine call (not object-oriented)' );
}
{
my $string = "";
my $listref = Net::DNS::ZoneFile::parse( \$string );
is( scalar(@$listref), 0, 'parse(): direct subroutine call (not object-oriented)' );
}
{
my $string = <<'EOF';
a1.example A 192.0.2.1
a2.example A 192.0.2.2
EOF
my $listref = Net::DNS::ZoneFile->parse( \$string ); # this also tests readfh()
is( scalar(@$listref), 2, 'parse(): RR string' );
}
{
my $string = <<'EOF';
a1.example A 192.0.2.1
$BOGUS
a2.example A 192.0.2.2
EOF
local $SIG{__WARN__} = sub { };
my $listref = Net::DNS::ZoneFile->parse( \$string );
is( $listref, undef, 'parse(): erroneous string' );
}
{
my $string = <<'EOF';
a1.example A 192.0.2.1
a2.example A 192.0.2.2
EOF
my @list = Net::DNS::ZoneFile->parse($string);
is( scalar(@list), 2, 'parse(): RR string into array' );
}
{
my $string = <<'EOF';
a1.example A 192.0.2.1
$BOGUS
a2.example A 192.0.2.2
EOF
local $SIG{__WARN__} = sub { };
my @list = Net::DNS::ZoneFile->parse($string);
is( scalar(@list), 1, 'parse(): erroneous string into array' );
}
{
my $listref = Net::DNS::ZoneFile::parse('a.example. A 192.0.2.1');
ok( scalar(@$listref), 'parse(): called as subroutine (not object-oriented)' );
}
SKIP: { ## Non-ASCII zone content
skip( 'Unicode/UTF-8 not supported', 4 ) unless UTF8;
my $greek = pack 'C*', 103, 114, 9, 84, 88, 84, 9, 229, 224, 241, 231, 234, 225, 10;
my $file1 = source($greek);
my $fh1 = new IO::File( $file1->name, '<:encoding(ISO8859-7)' ); # Greek
my $zone1 = new Net::DNS::ZoneFile($fh1);
my $txtgr = $zone1->read;
my $text = pack 'U*', 949, 944, 961, 951, 954, 945;
is( $txtgr->txtdata, $text, 'ISO8859-7 TXT rdata' );
eval { binmode(DATA) }; # suppress encoding layer
my $jptxt = join "\n", <DATA>;
my $file2 = source($jptxt);
my $fh2 = new IO::File( $file2->name, '<:utf8' ); # UTF-8 character encoding
my $zone2 = new Net::DNS::ZoneFile($fh2);
my $txtrr = $zone2->read; # TXT RR with kanji RDATA
my @rdata = $txtrr->txtdata;
my $rdata = $txtrr->txtdata;
is( length($rdata), 12, 'Unicode/UTF-8 TXT rdata' );
is( scalar(@rdata), 1, 'Unicode/UTF-8 TXT contiguous' );
skip( 'Non-ASCII domain - IDNA not supported', 1 ) unless LIBIDNOK || LIBIDN2OK;
my $jpnull = $zone2->read; # NULL RR with kanji owner name
is( $jpnull->name, 'xn--wgv71a', 'Unicode/UTF-8 domain name' );
}
exit;
__END__
jp TXT 古池や 蛙飛込む 水の音 ; Unicode text string
日本 NULL ; Unicode domain name
Zerion Mini Shell 1.0