/usr/lib/x86_64-linux-gnu/perl5/5.22/NetAddr/IP/InetBase.pm is in libnetaddr-ip-perl 4.078+dfsg-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 | #!/usr/bin/perl
package NetAddr::IP::InetBase;
use strict;
#use diagnostics;
#use lib qw(blib lib);
use vars qw($VERSION @EXPORT_OK @ISA %EXPORT_TAGS $Mode);
use AutoLoader qw(AUTOLOAD);
require Exporter;
@ISA = qw(Exporter);
$VERSION = do { my @r = (q$Revision: 0.08 $ =~ /\d+/g); sprintf "%d."."%02d" x $#r, @r };
@EXPORT_OK = qw(
inet_aton
inet_ntoa
ipv6_aton
ipv6_ntoa
ipv6_n2x
ipv6_n2d
inet_any2n
inet_n2dx
inet_n2ad
inet_ntop
inet_pton
packzeros
isIPv4
isNewIPv4
isAnyIPv4
AF_INET
AF_INET6
fake_AF_INET6
fillIPv4
);
%EXPORT_TAGS = (
all => [@EXPORT_OK],
ipv4 => [qw(
inet_aton
inet_ntoa
fillIPv4
)],
ipv6 => [qw(
ipv6_aton
ipv6_ntoa
ipv6_n2x
ipv6_n2d
inet_any2n
inet_n2dx
inet_n2ad
inet_pton
inet_ntop
packzeros
)],
);
# prototypes
sub inet_ntoa;
sub ipv6_aton;
sub ipv6_ntoa;
sub inet_any2n($);
sub inet_n2dx($);
sub inet_n2ad($);
sub _inet_ntop;
sub _inet_pton;
my $emulateAF_INET6 = 0;
{ no warnings 'once';
*packzeros = \&_packzeros;
## dynamic configuraton for IPv6
require Socket;
*AF_INET = \&Socket::AF_INET;
if (eval { AF_INET6() } ) {
*AF_INET6 = \&Socket::AF_INET6;
$emulateAF_INET6 = -1; # have it, remind below
}
if (eval{ require Socket6 } ) {
import Socket6 qw(
inet_pton
inet_ntop
);
unless ($emulateAF_INET6) {
*AF_INET6 = \&Socket6::AF_INET6;
}
$emulateAF_INET6 = 0; # clear, have it from elsewhere or here
} else {
unless ($emulateAF_INET6) { # unlikely at this point
if ($^O =~ /(?:free|dragon.+)bsd/i) { # FreeBSD, DragonFlyBSD
$emulateAF_INET6 = 28;
} elsif ($^O =~ /bsd/i) { # other BSD flavors like NetBDS, OpenBSD, BSD
$emulateAF_INET6 = 24;
} elsif ($^O =~ /(?:darwin|mac)/i) { # Mac OS X
$emulateAF_INET6 = 30;
} elsif ($^O =~ /win/i) { # Windows
$emulateAF_INET6 = 23;
} elsif ($^O =~ /(?:solaris|sun)/i) { # Sun box
$emulateAF_INET6 = 26;
} else { # use linux default
$emulateAF_INET6 = 10;
}
*AF_INET6 = sub { $emulateAF_INET6; };
} else {
$emulateAF_INET6 = 0; # clear, have it from elsewhere
}
*inet_pton = \&_inet_pton;
*inet_ntop = \&_inet_ntop;
}
} # end no warnings 'once'
sub fake_AF_INET6 {
return $emulateAF_INET6;
}
# allow user to choose upper or lower case
BEGIN {
use vars qw($n2x_format $n2d_format);
$n2x_format = "%x:%x:%x:%x:%x:%x:%x:%x";
$n2d_format = "%x:%x:%x:%x:%x:%x:%d.%d.%d.%d";
}
my $case = 0; # default lower case
sub upper { $n2x_format = uc($n2x_format); $n2d_format = uc($n2d_format); $case = 1; }
sub lower { $n2x_format = lc($n2x_format); $n2d_format = lc($n2d_format); $case = 0; }
sub ipv6_n2x {
die "Bad arg length for 'ipv6_n2x', length is ". length($_[0]) ." should be 16"
unless length($_[0]) == 16;
return sprintf($n2x_format,unpack("n8",$_[0]));
}
sub ipv6_n2d {
die "Bad arg length for 'ipv6_n2d', length is ". length($_[0]) ." should be 16"
unless length($_[0]) == 16;
my @hex = (unpack("n8",$_[0]));
$hex[9] = $hex[7] & 0xff;
$hex[8] = $hex[7] >> 8;
$hex[7] = $hex[6] & 0xff;
$hex[6] >>= 8;
return sprintf($n2d_format,@hex);
}
# if Socket lib is broken in some way, check for overange values
#
#my $overange = yinet_aton('256.1') ? 1:0;
#my $overange = gethostbyname('256.1') ? 1:0;
#sub inet_aton {
# unless (! $overange || $_[0] =~ /[^0-9\.]/) { # hostname
# my @dq = split(/\./,$_[0]);
# foreach (@dq) {
# return undef if $_ > 255;
# }
# }
# scalar gethostbyname($_[0]);
#}
sub fillIPv4 {
my $host = $_[0];
return undef unless defined $host;
if ($host =~ /^(\d+)(?:|\.(\d+)(?:|\.(\d+)(?:|\.(\d+))))$/) {
if (defined $4) {
return undef unless
$1 >= 0 && $1 < 256 &&
$2 >= 0 && $2 < 256 &&
$3 >= 0 && $3 < 256 &&
$4 >= 0 && $4 < 256;
$host = $1.'.'.$2.'.'.$3.'.'.$4;
# return pack('C4',$1,$2,$3,$4);
# $host = ($1 << 24) + ($2 << 16) + ($3 << 8) + $4;
} elsif (defined $3) {
return undef unless
$1 >= 0 && $1 < 256 &&
$2 >= 0 && $2 < 256 &&
$3 >= 0 && $3 < 256;
$host = $1.'.'.$2.'.0.'.$3
# return pack('C4',$1,$2,0,$3);
# $host = ($1 << 24) + ($2 << 16) + $3;
} elsif (defined $2) {
return undef unless
$1 >= 0 && $1 < 256 &&
$2 >= 0 && $2 < 256;
$host = $1.'.0.0.'.$2;
# return pack('C4',$1,0,0,$2);
# $host = ($1 << 24) + $2;
} else {
$host = '0.0.0.'.$1;
# return pack('C4',0,0,0,$1);
# $host = $1;
}
# return pack('N',$host);
}
$host;
}
sub inet_aton {
my $host = fillIPv4($_[0]);
return $host ? scalar gethostbyname($host) : undef;
}
#sub inet_aton {
# my $host = $_[0];
# return undef unless defined $host;
# if ($host =~ /^(\d+)(?:|\.(\d+)(?:|\.(\d+)(?:|\.(\d+))))$/) {
# if (defined $4) {
# return undef unless
# $1 >= 0 && $1 < 256 &&
# $2 >= 0 && $2 < 256 &&
# $3 >= 0 && $3 < 256 &&
# $4 >= 0 && $4 < 256;
# return pack('C4',$1,$2,$3,$4);
## $host = ($1 << 24) + ($2 << 16) + ($3 << 8) + $4;
# } elsif (defined $3) {
# return undef unless
# $1 >= 0 && $1 < 256 &&
# $2 >= 0 && $2 < 256 &&
# $3 >= 0 && $3 < 256;
# return pack('C4',$1,$2,0,$3);
## $host = ($1 << 24) + ($2 << 16) + $3;
# } elsif (defined $2) {
# return undef unless
# $1 >= 0 && $1 < 256 &&
# $2 >= 0 && $2 < 256;
# return pack('C4',$1,0,0,$2);
## $host = ($1 << 24) + $2;
# } else {
# return pack('C4',0,0,0,$1);
## $host = $1;
# }
## return pack('N',$host);
# }
# scalar gethostbyname($host);
#}
my $_zero = pack('L4',0,0,0,0);
my $_ipv4mask = pack('L4',0xffffffff,0xffffffff,0xffffffff,0);
sub isIPv4 {
if (length($_[0]) != 16) {
my $sub = (caller(1))[3] || (caller(0))[3];
die "Bad arg length for $sub, length is ". (length($_[0]) *8) .", should be 128";
}
return ($_[0] & $_ipv4mask) eq $_zero
? 1 : 0;
}
my $_newV4compat = pack('N4',0,0,0xffff,0);
sub isNewIPv4 {
my $naddr = $_[0] ^ $_newV4compat;
return isIPv4($naddr);
}
sub isAnyIPv4 {
my $naddr = $_[0];
my $rv = isIPv4($_[0]);
return $rv if $rv;
return isNewIPv4($naddr);
}
sub DESTROY {};
sub import {
if (grep { $_ eq ':upper' } @_) {
upper();
@_ = grep { $_ ne ':upper' } @_;
}
NetAddr::IP::InetBase->export_to_level(1,@_);
}
1;
__END__
=head1 NAME
NetAddr::IP::InetBase -- IPv4 and IPV6 utilities
=head1 SYNOPSIS
use NetAddr::IP::Base qw(
:upper
inet_aton
inet_ntoa
ipv6_aton
ipv6_ntoa
ipv6_n2x
ipv6_n2d
inet_any2n
inet_n2dx
inet_n2ad
inet_pton
inet_ntop
packzeros
isIPv4
isNewIPv4
isAnyIPv4
AF_INET
AF_INET6
fake_AF_INET6
fillIPv4
);
use NetAddr::IP::Util qw(:all :inet :ipv4 :ipv6 :math)
:ipv4 => inet_aton, inet_ntoa, fillIPv4
:ipv6 => ipv6_aton, ipv6_ntoa,ipv6_n2x, ipv6_n2d,
inet_any2n, inet_n2dx, inet_n2ad
inet_pton, inet_ntop, packzeros
$dotquad = inet_ntoa($netaddr);
$netaddr = inet_aton($dotquad);
$ipv6naddr = ipv6_aton($ipv6_text);
$ipv6_text = ipv6_ntoa($ipv6naddr);
$hex_text = ipv6_n2x($ipv6naddr);
$dec_text = ipv6_n2d($ipv6naddr);
$ipv6naddr = inet_any2n($dotquad or $ipv6_text);
$dotquad or $hex_text = inet_n2dx($ipv6naddr);
$dotquad or $dec_text = inet_n2ad($ipv6naddr);
$netaddr = inet_pton($AF_family,$text_addr);
$text_addr = inet_ntop($AF_family,$netaddr);
$hex_text = packzeros($hex_text);
$rv = isIPv4($bits128);
$rv = isNewIPv4($bits128);
$rv = isAnyIPv4($bits128);
$constant = AF_INET();
$constant = AF_INET6();
$trueif = fake_AF_INET6();
$ip_filled = fillIPv4($shortIP);
NetAddr::IP::InetBase::lower();
NetAddr::IP::InetBase::upper();
=head1 INSTALLATION
Un-tar the distribution in an appropriate directory and type:
perl Makefile.PL
make
make test
make install
=head1 DESCRIPTION
B<NetAddr::IP::InetBase> provides a suite network of conversion functions
written in pure Perl for converting both IPv4 and IPv6 addresses to
and from network address format and text format.
The IPv6 functions support all rfc1884 formats.
i.e. x:x:x:x:x:x:x:x:x
x:x:x:x:x:x:x:d.d.d.d
::x:x:x
::x:d.d.d.d
and so on...
=over 4
=item * $dotquad = inet_ntoa($netaddr);
Convert a packed IPv4 network address to a dot-quad IP address.
input: packed network address
returns: IP address i.e. 10.4.12.123
=cut
sub inet_ntoa {
die 'Bad arg length for '. __PACKAGE__ ."::inet_ntoa, length is ". length($_[0]) ." should be 4"
unless length($_[0]) == 4;
my @hex = (unpack("n2",$_[0]));
$hex[3] = $hex[1] & 0xff;
$hex[2] = $hex[1] >> 8;
$hex[1] = $hex[0] & 0xff;
$hex[0] >>= 8;
return sprintf("%d.%d.%d.%d",@hex);
}
=item * $netaddr = inet_aton($dotquad);
Convert a dot-quad IP address into an IPv4 packed network address.
input: IP address i.e. 192.5.16.32
returns: packed network address
=item * $ipv6addr = ipv6_aton($ipv6_text);
Takes an IPv6 address of the form described in rfc1884
and returns a 128 bit binary RDATA string.
input: ipv6 text
returns: 128 bit RDATA string
=cut
sub ipv6_aton {
my($ipv6) = @_;
return undef unless $ipv6;
local($1,$2,$3,$4,$5);
if ($ipv6 =~ /^(.*:)(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/) { # mixed hex, dot-quad
return undef if $2 > 255 || $3 > 255 || $4 > 255 || $5 > 255;
$ipv6 = sprintf("%s%X%02X:%X%02X",$1,$2,$3,$4,$5); # convert to pure hex
}
my $c;
return undef if
$ipv6 =~ /[^:0-9a-fA-F]/ || # non-hex character
(($c = $ipv6) =~ s/::/x/ && $c =~ /(?:x|:):/) || # double :: ::?
$ipv6 =~ /[0-9a-fA-F]{5,}/; # more than 4 digits
$c = $ipv6 =~ tr/:/:/; # count the colons
return undef if $c < 7 && $ipv6 !~ /::/;
if ($c > 7) { # strip leading or trailing ::
return undef unless
$ipv6 =~ s/^::/:/ ||
$ipv6 =~ s/::$/:/;
return undef if --$c > 7;
}
while ($c++ < 7) { # expand compressed fields
$ipv6 =~ s/::/:::/;
}
$ipv6 .= 0 if $ipv6 =~ /:$/;
my @hex = split(/:/,$ipv6);
foreach(0..$#hex) {
$hex[$_] = hex($hex[$_] || 0);
}
pack("n8",@hex);
}
=item * $ipv6text = ipv6_ntoa($ipv6naddr);
Convert a 128 bit binary IPv6 address to compressed rfc 1884
text representation.
input: 128 bit RDATA string
returns: ipv6 text
=cut
sub ipv6_ntoa {
return inet_ntop(AF_INET6(),$_[0]);
}
=item * $hex_text = ipv6_n2x($ipv6addr);
Takes an IPv6 RDATA string and returns an 8 segment IPv6 hex address
input: 128 bit RDATA string
returns: x:x:x:x:x:x:x:x
Note: this function does NOT compress adjacent
strings of 0:0:0:0 into the :: format
=item * $dec_text = ipv6_n2d($ipv6addr);
Takes an IPv6 RDATA string and returns a mixed hex - decimal IPv6 address
with the 6 uppermost chunks in hex and the lower 32 bits in dot-quad
representation.
input: 128 bit RDATA string
returns: x:x:x:x:x:x:d.d.d.d
Note: this function does NOT compress adjacent
strings of 0:0:0:0 into the :: format
=item * $ipv6naddr = inet_any2n($dotquad or $ipv6_text);
This function converts a text IPv4 or IPv6 address in text format in any
standard notation into a 128 bit IPv6 string address. It prefixes any
dot-quad address (if found) with '::' and passes it to B<ipv6_aton>.
input: dot-quad or rfc1844 address
returns: 128 bit IPv6 string
=cut
sub inet_any2n($) {
my($addr) = @_;
$addr = '' unless $addr;
$addr = '::' . $addr
unless $addr =~ /:/;
return ipv6_aton($addr);
}
=item * $dotquad or $hex_text = inet_n2dx($ipv6naddr);
This function B<does the right thing> and returns the text for either a
dot-quad IPv4 or a hex notation IPv6 address.
input: 128 bit IPv6 string
returns: ddd.ddd.ddd.ddd
or x:x:x:x:x:x:x:x
Note: this function does NOT compress adjacent
strings of 0:0:0:0 into the :: format
=cut
sub inet_n2dx($) {
my($nadr) = @_;
if (isAnyIPv4($nadr)) {
local $1;
ipv6_n2d($nadr) =~ /([^:]+)$/;
return $1;
}
return ipv6_n2x($nadr);
}
=item * $dotquad or $dec_text = inet_n2ad($ipv6naddr);
This function B<does the right thing> and returns the text for either a
dot-quad IPv4 or a hex::decimal notation IPv6 address.
input: 128 bit IPv6 string
returns: ddd.ddd.ddd.ddd
or x:x:x:x:x:x:ddd.ddd.ddd.dd
Note: this function does NOT compress adjacent
strings of 0:0:0:0 into the :: format
=cut
sub inet_n2ad($) {
my($nadr) = @_;
my $addr = ipv6_n2d($nadr);
return $addr unless isAnyIPv4($nadr);
local $1;
$addr =~ /([^:]+)$/;
return $1;
}
=item * $netaddr = inet_pton($AF_family,$text_addr);
This function takes an IP address in IPv4 or IPv6 text format and converts it into
binary format. The type of IP address conversion is controlled by the FAMILY
argument.
NOTE: inet_pton, inet_ntop and AF_INET6 come from the Socket6 library if it
is present on this host.
=cut
sub _inet_pton {
my($af,$ip) = @_;
die 'Bad address family for '. __PACKAGE__ ."::inet_pton, got $af"
unless $af == AF_INET6() || $af == AF_INET();
if ($af == AF_INET()) {
inet_aton($ip);
} else {
ipv6_aton($ip);
}
}
=item * $text_addr = inet_ntop($AF_family,$netaddr);
This function takes and IP address in binary format and converts it into
text format. The type of IP address conversion is controlled by the FAMILY
argument.
NOTE: inet_ntop ALWAYS returns lowercase characters.
NOTE: inet_pton, inet_ntop and AF_INET6 come from the Socket6 library if it
is present on this host.
=cut
sub _inet_ntop {
my($af,$naddr) = @_;
die 'Unsupported address family for '. __PACKAGE__ ."::inet_ntop, af is $af"
unless $af == AF_INET6() || $af == AF_INET();
if ($af == AF_INET()) {
inet_ntoa($naddr);
} else {
return ($case)
? lc packzeros(ipv6_n2x($naddr))
: _packzeros(ipv6_n2x($naddr));
}
}
=item * $hex_text = packzeros($hex_text);
This function optimizes and rfc 1884 IPv6 hex address to reduce the number of
long strings of zero bits as specified in rfc 1884, 2.2 (2) by substituting
B<::> for the first occurence of the longest string of zeros in the address.
=cut
sub _packzeros {
my $x6 = shift;
if ($x6 =~ /\:\:/) { # already contains ::
# then re-optimize
$x6 = ($x6 =~ /\:\d+\.\d+\.\d+\.\d+/) # ipv4 notation ?
? ipv6_n2d(ipv6_aton($x6))
: ipv6_n2x(ipv6_aton($x6));
}
$x6 = ':'. lc $x6; # prefix : & always lower case
my $d = '';
if ($x6 =~ /(.+\:)(\d+\.\d+\.\d+\.\d+)/) { # if contains dot quad
$x6 = $1; # save hex piece
$d = $2; # and dot quad piece
}
$x6 .= ':'; # suffix :
$x6 =~ s/\:0+/\:0/g; # compress strings of 0's to single '0'
$x6 =~ s/\:0([1-9a-f]+)/\:$1/g; # eliminate leading 0's in hex strings
my @x = $x6 =~ /(?:\:0)*/g; # split only strings of :0:0..."
my $m = 0;
my $i = 0;
for (0..$#x) { # find next longest pattern :0:0:0...
my $len = length($x[$_]);
next unless $len > $m;
$m = $len;
$i = $_; # index to first longest pattern
}
if ($m > 2) { # there was a string of 2 or more zeros
$x6 =~ s/$x[$i]/\:/; # replace first longest :0:0:0... with "::"
unless ($i) { # if it is the first match, $i = 0
$x6 = substr($x6,0,-1); # keep the leading ::, remove trailing ':'
} else {
$x6 = substr($x6,1,-1); # else remove leading & trailing ':'
}
$x6 .= ':' unless $x6 =~ /\:\:/; # restore ':' if match and we can't see it, implies trailing '::'
} else { # there was no match
$x6 = substr($x6,1,-1); # remove leading & trailing ':'
}
$x6 .= $d; # append digits if any
return $case
? uc $x6
: $x6;
}
=item * $ipv6naddr = ipv4to6($netaddr);
Convert an ipv4 network address into an ipv6 network address.
input: 32 bit network address
returns: 128 bit network address
=item * $rv = isIPv4($bits128);
This function returns true if there are no on bits present in the IPv6
portion of the 128 bit string and false otherwise.
i.e. the address must be of the form - ::d.d.d.d
Note: this is an old and deprecated ipV4 compatible ipV6 address
=item * $rv = isNewIPv4($bits128);
This function return true if the IPv6 128 bit string is of the form
::ffff:d.d.d.d
=item * $rv = isAnyIPv4($bits128);
This function return true if the IPv6 bit string is of the form
::d.d.d.d or ::ffff:d.d.d.d
=item * NetAddr::IP::InetBase::lower();
Return IPv6 strings in lowercase. This is the default.
=item * NetAddr::IP::InetBase::upper();
Return IPv6 strings in uppercase.
The default may be set to uppercase when the module is loaded by invoking
the TAG :upper. i.e.
use NetAddr::IP::InetBase qw( :upper );
=item * $constant = AF_INET;
This function returns the system value for AF_INET.
=item * $constant = AF_INET6;
AF_INET6 is sometimes present in the Socket library and always present in the Socket6 library. When the Socket
library does not contain AF_INET6 and when Socket6 is not present, a place holder value is C<guessed> based on
the underlying host operating system. See B<fake_AF_INET6> below.
NOTE: inet_pton, inet_ntop and AF_INET6 come from the Socket6 library if it
is present on this host.
=item * $trueif = fake_AF_INET6;
This function return FALSE if AF_INET6 is provided by Socket or Socket6. Otherwise, it returns the best guess
value based on name of the host operating system.
=item * $ip_filled = fillIPv4($shortIP);
This function converts IPv4 addresses of the form 127.1 to the long form
127.0.0.1
If the function is passed an argument that does not match the form of an IP
address, the original argument is returned. i.e. pass it a hostname or a
short IP and it will return a hostname or a filled IP.
=back
=head1 EXPORT_OK
:upper
inet_aton
inet_ntoa
ipv6_aton
ipv6_ntoa
ipv6_n2x
ipv6_n2d
inet_any2n
inet_n2dx
inet_n2ad
inet_pton
inet_ntop
packzeros
isIPv4
isNewIPv4
isAnyIPv4
AF_INET
AF_INET6
fake_AF_INET6
fillIPv4
=head1 %EXPORT_TAGS
:all
:ipv4
:ipv6
:upper
=head1 AUTHOR
Michael Robinton <michael@bizsystems.com>
=head1 COPYRIGHT
Copyright 2003 - 2012, Michael Robinton E<lt>michael@bizsystems.comE<gt>
All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of either:
a) the GNU General Public License as published by the Free
Software Foundation; either version 2, or (at your option) any
later version, or
b) the "Artistic License" which comes with this distribution.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See either
the GNU General Public License or the Artistic License for more details.
You should have received a copy of the Artistic License with this
distribution, in the file named "Artistic". If not, I'll be glad to provide
one.
You should also have received a copy of the GNU General Public License
along with this program in the file named "Copying". If not, write to the
Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor
Boston, MA 02110-1301 USA
or visit their web page on the internet at:
http://www.gnu.org/copyleft/gpl.html.
=head1 AUTHOR
Michael Robinton <michael@bizsystems.com>
=head1 SEE ALSO
NetAddr::IP(3), NetAddr::IP::Lite(3), NetAddr::IP::Util(3)
=cut
1;
|