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iputils.pm - some perl function for deal with ip.
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#!/bin/env perl | |||
# | |||
# Author: soarpenguin <soarpenguin@gmail.com> | |||
# First release Jan.3 2014 | |||
################################################## | |||
# usage of iputils.pm, add code like: | |||
# use lib "path"; #path is the file of iputils.pm | |||
# use iputils; | |||
################################################## | |||
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package iputils; | |||
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use FileHandle; | |||
use Getopt::Long; | |||
use Time::Local qw(timelocal); | |||
use Term::ANSIColor; | |||
use strict; | |||
$|=1; | |||
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BEGIN { | |||
use Exporter(); | |||
use vars qw($VERSION @ISA @EXPORT @EXPORT_OK); | |||
$VERSION = 0.0.1; | |||
@ISA = qw(Exporter); | |||
@EXPORT = qw( | |||
validate_ip ip2long long2ip ip2hex hex2ip | |||
__FUNC__ __func__ get_now_time trim | |||
); | |||
@EXPORT_OK = qw(&mk_fd_nonblocking &get_winsize); | |||
} | |||
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use constant true => 1; | |||
use constant false => 0; | |||
use constant MAX_IP => 0xffffffff; | |||
use constant MIN_IP => 0x0; | |||
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sub validate_ip { | |||
my $ip = shift; | |||
my @array = (); | |||
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return false unless $ip; | |||
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$ip = trim($ip); | |||
if ($ip =~ /^(\d+\.){3}(\d+)$/) { | |||
@array = split(/\./, $ip); | |||
foreach my $i (@array) { | |||
if ($i > 255 || $i < 0) { | |||
return false; | |||
} | |||
} | |||
return true; | |||
} | |||
return false; | |||
} | |||
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sub ip2long { | |||
my $ip = shift; | |||
my $long = 0; | |||
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my $ret = validate_ip($ip); | |||
if ($ret == false) { | |||
return $long; | |||
} | |||
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my @array = split(/\./, $ip); | |||
foreach my $e (@array) { | |||
$long = ($long << 8 | $e); | |||
} | |||
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return $long; | |||
} | |||
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sub long2ip { | |||
my $l = shift; | |||
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return "0.0.0.0" unless $l; | |||
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if ($l > MAX_IP or $l < MIN_IP) { | |||
return "0.0.0.0"; | |||
} | |||
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return sprintf("%d.%d.%d.%d", | |||
$l >> 24 & 255, $l >> 16 & 255, $l >> 8 & 255, $l & 255); | |||
} | |||
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sub ip2hex { | |||
my $netip = shift; | |||
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return "0.0.0.0" unless $netip; | |||
$netip = ip2long($netip); | |||
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return sprintf("%08x", $netip); | |||
} | |||
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sub hex2ip { | |||
my $netip = shift; | |||
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#$netip = sprintf("%08x", $netip); | |||
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return long2ip($netip); | |||
} | |||
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# set socket nonblocking. | |||
sub mk_fd_nonblocking { | |||
use Fcntl qw(F_GETFL F_SETFL O_NONBLOCK); | |||
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my $fd = shift; | |||
my $flags = fcntl($fd, F_GETFL, 0) | |||
or warn "Can't get flags for the fd: $!\n"; | |||
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$flags = fcntl($fd, F_SETFL, $flags | O_NONBLOCK) | |||
or warn "Can't set flags for the fd: $!\n"; | |||
} | |||
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sub get_now_time { | |||
my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst) = localtime(time); | |||
my $now_time = sprintf("%d.%d.%d %d:%d:%d", $year + 1900, $mon + 1, $mday, $hour, $min, $sec); | |||
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return "[$now_time]"; | |||
} | |||
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sub trim | |||
{ | |||
my $string = shift; | |||
$string =~ s/^\s+//; | |||
$string =~ s/\s+$//; | |||
return $string; | |||
} | |||
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# Retrieve the name of the current function | |||
sub __FUNC__ { (caller(1))[3] . '()' } | |||
# display the name of the current function | |||
sub __func__ { (caller(1))[3] . '(' . join(', ', @_) . ')' } | |||
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1; |