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PK /M�[��&�� � protoent.pmnu �[��� package Net::protoent; use strict; use 5.006_001; our $VERSION = '1.01'; our(@EXPORT, @EXPORT_OK, %EXPORT_TAGS); our ( $p_name, @p_aliases, $p_proto ); BEGIN { use Exporter (); @EXPORT = qw(getprotobyname getprotobynumber getprotoent getproto); @EXPORT_OK = qw( $p_name @p_aliases $p_proto ); %EXPORT_TAGS = ( FIELDS => [ @EXPORT_OK, @EXPORT ] ); } # Class::Struct forbids use of @ISA sub import { goto &Exporter::import } use Class::Struct qw(struct); struct 'Net::protoent' => [ name => '$', aliases => '@', proto => '$', ]; sub populate (@) { return unless @_; my $pob = new(); $p_name = $pob->[0] = $_[0]; @p_aliases = @{ $pob->[1] } = split ' ', $_[1]; $p_proto = $pob->[2] = $_[2]; return $pob; } sub getprotoent ( ) { populate(CORE::getprotoent()) } sub getprotobyname ($) { populate(CORE::getprotobyname(shift)) } sub getprotobynumber ($) { populate(CORE::getprotobynumber(shift)) } sub getproto ($;$) { no strict 'refs'; return &{'getprotoby' . ($_[0]=~/^\d+$/ ? 'number' : 'name')}(@_); } 1; __END__ =head1 NAME Net::protoent - by-name interface to Perl's built-in getproto*() functions =head1 SYNOPSIS use Net::protoent; $p = getprotobyname(shift || 'tcp') || die "no proto"; printf "proto for %s is %d, aliases are %s\n", $p->name, $p->proto, "@{$p->aliases}"; use Net::protoent qw(:FIELDS); getprotobyname(shift || 'tcp') || die "no proto"; print "proto for $p_name is $p_proto, aliases are @p_aliases\n"; =head1 DESCRIPTION This module's default exports override the core getprotoent(), getprotobyname(), and getnetbyport() functions, replacing them with versions that return "Net::protoent" objects. They take default second arguments of "tcp". This object has methods that return the similarly named structure field name from the C's protoent structure from F<netdb.h>; namely name, aliases, and proto. The aliases method returns an array reference, the rest scalars. You may also import all the structure fields directly into your namespace as regular variables using the :FIELDS import tag. (Note that this still overrides your core functions.) Access these fields as variables named with a preceding C<p_>. Thus, C<$proto_obj-E<gt>name()> corresponds to $p_name if you import the fields. Array references are available as regular array variables, so for example C<@{ $proto_obj-E<gt>aliases() }> would be simply @p_aliases. The getproto() function is a simple front-end that forwards a numeric argument to getprotobyport(), and the rest to getprotobyname(). To access this functionality without the core overrides, pass the C<use> an empty import list, and then access function functions with their full qualified names. On the other hand, the built-ins are still available via the C<CORE::> pseudo-package. =head1 NOTE While this class is currently implemented using the Class::Struct module to build a struct-like class, you shouldn't rely upon this. =head1 AUTHOR Tom Christiansen PK /M�[���� � hostent.pmnu �[��� package Net::hostent; use strict; use 5.006_001; our $VERSION = '1.02'; our (@EXPORT, @EXPORT_OK, %EXPORT_TAGS); our ( $h_name, @h_aliases, $h_addrtype, $h_length, @h_addr_list, $h_addr ); BEGIN { use Exporter (); @EXPORT = qw(gethostbyname gethostbyaddr gethost); @EXPORT_OK = qw( $h_name @h_aliases $h_addrtype $h_length @h_addr_list $h_addr ); %EXPORT_TAGS = ( FIELDS => [ @EXPORT_OK, @EXPORT ] ); } # Class::Struct forbids use of @ISA sub import { goto &Exporter::import } use Class::Struct qw(struct); struct 'Net::hostent' => [ name => '$', aliases => '@', addrtype => '$', 'length' => '$', addr_list => '@', ]; sub addr { shift->addr_list->[0] } sub populate (@) { return unless @_; my $hob = new(); $h_name = $hob->[0] = $_[0]; @h_aliases = @{ $hob->[1] } = split ' ', $_[1]; $h_addrtype = $hob->[2] = $_[2]; $h_length = $hob->[3] = $_[3]; $h_addr = $_[4]; @h_addr_list = @{ $hob->[4] } = @_[ (4 .. $#_) ]; return $hob; } sub gethostbyname ($) { populate(CORE::gethostbyname(shift)) } sub gethostbyaddr ($;$) { my ($addr, $addrtype); $addr = shift; require Socket unless @_; $addrtype = @_ ? shift : Socket::AF_INET(); populate(CORE::gethostbyaddr($addr, $addrtype)) } sub gethost($) { if ($_[0] =~ /^\d+(?:\.\d+(?:\.\d+(?:\.\d+)?)?)?$/) { require Socket; &gethostbyaddr(Socket::inet_aton(shift)); } else { &gethostbyname; } } 1; __END__ =head1 NAME Net::hostent - by-name interface to Perl's built-in gethost*() functions =head1 SYNOPSIS use Net::hostent; =head1 DESCRIPTION This module's default exports override the core gethostbyname() and gethostbyaddr() functions, replacing them with versions that return "Net::hostent" objects. This object has methods that return the similarly named structure field name from the C's hostent structure from F<netdb.h>; namely name, aliases, addrtype, length, and addr_list. The aliases and addr_list methods return array reference, the rest scalars. The addr method is equivalent to the zeroth element in the addr_list array reference. You may also import all the structure fields directly into your namespace as regular variables using the :FIELDS import tag. (Note that this still overrides your core functions.) Access these fields as variables named with a preceding C<h_>. Thus, C<$host_obj-E<gt>name()> corresponds to $h_name if you import the fields. Array references are available as regular array variables, so for example C<@{ $host_obj-E<gt>aliases() }> would be simply @h_aliases. The gethost() function is a simple front-end that forwards a numeric argument to gethostbyaddr() by way of Socket::inet_aton, and the rest to gethostbyname(). To access this functionality without the core overrides, pass the C<use> an empty import list, and then access function functions with their full qualified names. On the other hand, the built-ins are still available via the C<CORE::> pseudo-package. =head1 EXAMPLES use Net::hostent; use Socket; @ARGV = ('netscape.com') unless @ARGV; for $host ( @ARGV ) { unless ($h = gethost($host)) { warn "$0: no such host: $host\n"; next; } printf "\n%s is %s%s\n", $host, lc($h->name) eq lc($host) ? "" : "*really* ", $h->name; print "\taliases are ", join(", ", @{$h->aliases}), "\n" if @{$h->aliases}; if ( @{$h->addr_list} > 1 ) { my $i; for $addr ( @{$h->addr_list} ) { printf "\taddr #%d is [%s]\n", $i++, inet_ntoa($addr); } } else { printf "\taddress is [%s]\n", inet_ntoa($h->addr); } if ($h = gethostbyaddr($h->addr)) { if (lc($h->name) ne lc($host)) { printf "\tThat addr reverses to host %s!\n", $h->name; $host = $h->name; redo; } } } =head1 NOTE While this class is currently implemented using the Class::Struct module to build a struct-like class, you shouldn't rely upon this. =head1 AUTHOR Tom Christiansen PK /M�[���(� � netent.pmnu �[��� package Net::netent; use strict; use 5.006_001; our $VERSION = '1.01'; our(@EXPORT, @EXPORT_OK, %EXPORT_TAGS); our ( $n_name, @n_aliases, $n_addrtype, $n_net ); BEGIN { use Exporter (); @EXPORT = qw(getnetbyname getnetbyaddr getnet); @EXPORT_OK = qw( $n_name @n_aliases $n_addrtype $n_net ); %EXPORT_TAGS = ( FIELDS => [ @EXPORT_OK, @EXPORT ] ); } # Class::Struct forbids use of @ISA sub import { goto &Exporter::import } use Class::Struct qw(struct); struct 'Net::netent' => [ name => '$', aliases => '@', addrtype => '$', net => '$', ]; sub populate (@) { return unless @_; my $nob = new(); $n_name = $nob->[0] = $_[0]; @n_aliases = @{ $nob->[1] } = split ' ', $_[1]; $n_addrtype = $nob->[2] = $_[2]; $n_net = $nob->[3] = $_[3]; return $nob; } sub getnetbyname ($) { populate(CORE::getnetbyname(shift)) } sub getnetbyaddr ($;$) { my ($net, $addrtype); $net = shift; require Socket if @_; $addrtype = @_ ? shift : Socket::AF_INET(); populate(CORE::getnetbyaddr($net, $addrtype)) } sub getnet($) { if ($_[0] =~ /^\d+(?:\.\d+(?:\.\d+(?:\.\d+)?)?)?$/) { require Socket; &getnetbyaddr(Socket::inet_aton(shift)); } else { &getnetbyname; } } 1; __END__ =head1 NAME Net::netent - by-name interface to Perl's built-in getnet*() functions =head1 SYNOPSIS use Net::netent qw(:FIELDS); getnetbyname("loopback") or die "bad net"; printf "%s is %08X\n", $n_name, $n_net; use Net::netent; $n = getnetbyname("loopback") or die "bad net"; { # there's gotta be a better way, eh? @bytes = unpack("C4", pack("N", $n->net)); shift @bytes while @bytes && $bytes[0] == 0; } printf "%s is %08X [%d.%d.%d.%d]\n", $n->name, $n->net, @bytes; =head1 DESCRIPTION This module's default exports override the core getnetbyname() and getnetbyaddr() functions, replacing them with versions that return "Net::netent" objects. This object has methods that return the similarly named structure field name from the C's netent structure from F<netdb.h>; namely name, aliases, addrtype, and net. The aliases method returns an array reference, the rest scalars. You may also import all the structure fields directly into your namespace as regular variables using the :FIELDS import tag. (Note that this still overrides your core functions.) Access these fields as variables named with a preceding C<n_>. Thus, C<$net_obj-E<gt>name()> corresponds to $n_name if you import the fields. Array references are available as regular array variables, so for example C<@{ $net_obj-E<gt>aliases() }> would be simply @n_aliases. The getnet() function is a simple front-end that forwards a numeric argument to getnetbyaddr(), and the rest to getnetbyname(). To access this functionality without the core overrides, pass the C<use> an empty import list, and then access function functions with their full qualified names. On the other hand, the built-ins are still available via the C<CORE::> pseudo-package. =head1 EXAMPLES The getnet() functions do this in the Perl core: sv_setiv(sv, (I32)nent->n_net); The gethost() functions do this in the Perl core: sv_setpvn(sv, hent->h_addr, len); That means that the address comes back in binary for the host functions, and as a regular perl integer for the net ones. This seems a bug, but here's how to deal with it: use strict; use Socket; use Net::netent; @ARGV = ('loopback') unless @ARGV; my($n, $net); for $net ( @ARGV ) { unless ($n = getnetbyname($net)) { warn "$0: no such net: $net\n"; next; } printf "\n%s is %s%s\n", $net, lc($n->name) eq lc($net) ? "" : "*really* ", $n->name; print "\taliases are ", join(", ", @{$n->aliases}), "\n" if @{$n->aliases}; # this is stupid; first, why is this not in binary? # second, why am i going through these convolutions # to make it looks right { my @a = unpack("C4", pack("N", $n->net)); shift @a while @a && $a[0] == 0; printf "\taddr is %s [%d.%d.%d.%d]\n", $n->net, @a; } if ($n = getnetbyaddr($n->net)) { if (lc($n->name) ne lc($net)) { printf "\tThat addr reverses to net %s!\n", $n->name; $net = $n->name; redo; } } } =head1 NOTE While this class is currently implemented using the Class::Struct module to build a struct-like class, you shouldn't rely upon this. =head1 AUTHOR Tom Christiansen PK /M�[�ɯ� � servent.pmnu �[��� package Net::servent; use strict; use 5.006_001; our $VERSION = '1.02'; our(@EXPORT, @EXPORT_OK, %EXPORT_TAGS); our ( $s_name, @s_aliases, $s_port, $s_proto ); BEGIN { use Exporter (); @EXPORT = qw(getservbyname getservbyport getservent getserv); @EXPORT_OK = qw( $s_name @s_aliases $s_port $s_proto ); %EXPORT_TAGS = ( FIELDS => [ @EXPORT_OK, @EXPORT ] ); } # Class::Struct forbids use of @ISA sub import { goto &Exporter::import } use Class::Struct qw(struct); struct 'Net::servent' => [ name => '$', aliases => '@', port => '$', proto => '$', ]; sub populate (@) { return unless @_; my $sob = new(); $s_name = $sob->[0] = $_[0]; @s_aliases = @{ $sob->[1] } = split ' ', $_[1]; $s_port = $sob->[2] = $_[2]; $s_proto = $sob->[3] = $_[3]; return $sob; } sub getservent ( ) { populate(CORE::getservent()) } sub getservbyname ($;$) { populate(CORE::getservbyname(shift,shift||'tcp')) } sub getservbyport ($;$) { populate(CORE::getservbyport(shift,shift||'tcp')) } sub getserv ($;$) { no strict 'refs'; return &{'getservby' . ($_[0]=~/^\d+$/ ? 'port' : 'name')}(@_); } 1; __END__ =head1 NAME Net::servent - by-name interface to Perl's built-in getserv*() functions =head1 SYNOPSIS use Net::servent; $s = getservbyname(shift || 'ftp') || die "no service"; printf "port for %s is %s, aliases are %s\n", $s->name, $s->port, "@{$s->aliases}"; use Net::servent qw(:FIELDS); getservbyname(shift || 'ftp') || die "no service"; print "port for $s_name is $s_port, aliases are @s_aliases\n"; =head1 DESCRIPTION This module's default exports override the core getservent(), getservbyname(), and getnetbyport() functions, replacing them with versions that return "Net::servent" objects. They take default second arguments of "tcp". This object has methods that return the similarly named structure field name from the C's servent structure from F<netdb.h>; namely name, aliases, port, and proto. The aliases method returns an array reference, the rest scalars. You may also import all the structure fields directly into your namespace as regular variables using the :FIELDS import tag. (Note that this still overrides your core functions.) Access these fields as variables named with a preceding C<s_>. Thus, C<$serv_obj-E<gt>name()> corresponds to $s_name if you import the fields. Array references are available as regular array variables, so for example C<@{ $serv_obj-E<gt>aliases()}> would be simply @s_aliases. The getserv() function is a simple front-end that forwards a numeric argument to getservbyport(), and the rest to getservbyname(). To access this functionality without the core overrides, pass the C<use> an empty import list, and then access function functions with their full qualified names. On the other hand, the built-ins are still available via the C<CORE::> pseudo-package. =head1 EXAMPLES use Net::servent qw(:FIELDS); while (@ARGV) { my ($service, $proto) = ((split m!/!, shift), 'tcp'); my $valet = getserv($service, $proto); unless ($valet) { warn "$0: No service: $service/$proto\n" next; } printf "service $service/$proto is port %d\n", $valet->port; print "alias are @s_aliases\n" if @s_aliases; } =head1 NOTE While this class is currently implemented using the Class::Struct module to build a struct-like class, you shouldn't rely upon this. =head1 AUTHOR Tom Christiansen PK /M�[��&�� � protoent.pmnu �[��� PK /M�[���� � % hostent.pmnu �[��� PK /M�[���(� � W netent.pmnu �[��� PK /M�[�ɯ� � 3. servent.pmnu �[��� PK ( <
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