/usr/share/perl5/Net/Hotline/Shared.pm is in libnet-hotline-perl 0.83-2.
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 | package Net::Hotline::Shared;
## Copyright(c) 1998-2002 by John C. Siracusa. All rights reserved. This
## program is free software; you can redistribute it and/or modify it under
## the same terms as Perl itself.
use strict;
use Carp;
use IO::Handle;
use POSIX qw(F_GETFL F_SETFL O_NONBLOCK EINTR EWOULDBLOCK EAGAIN);
use vars qw(@ISA @EXPORT_OK %EXPORT_TAGS $VERSION);
require Exporter;
@ISA = qw(Exporter);
@EXPORT_OK = qw(_encode _write _read _hexdump _debug _set_blocking);
%EXPORT_TAGS = (all => \@EXPORT_OK);
$VERSION = '0.80';
sub _debug
{
if($Net::Hotline::Client::DEBUG)
{
print STDERR join('', @_);
}
}
sub _encode
{
my($data) = join('', @_);
my($i, $len, $enc);
$len = length($data);
$enc = '';
for($i = 0; $i < $len; $i++)
{
$enc .= pack("C", (255 - unpack("C", substr($data, $i, 1))));
}
return $enc;
}
sub _write
{
my($fh, $data_ref, $length) = @_;
my($written, $offset);
$offset = 0;
while($length > 0) # Handle partial writes
{
$written = syswrite($fh, $$data_ref, $length, $offset);
next if($! == EINTR);
unless(defined($written))
{
next if($! == EWOULDBLOCK || $! == EAGAIN);
croak("System write error(", $! + 0, "): $!\n");
}
$length -= $written;
$offset += $written;
}
return $offset;
}
sub _read
{
my($fh, $data_ref, $length, $blocking) = @_;
my($offset) = 0;
my($read) = 0;
$blocking = 1 unless(defined($blocking));
#_debug("Reading $length...");
while($length > 0) # Handle partial reads
{
$read = sysread($fh, $$data_ref, $length, $offset);
unless(defined($read))
{
next if($! == EINTR);
# Once we read a little bit, we keep readinuntil we get it all
# Otherwise, we can return undef and treat it as a WOULDBLOCK
if($blocking || $offset > 0) { next }
else { return }
}
$offset += $read;
$length -= $read;
}
#_debug("read $offset ($length)\n");
return($offset);
}
sub _set_blocking
{
my($fh, $blocking) = @_;
if($IO::VERSION >= 1.19) # The easy way, with the IO module
{
$fh->blocking($blocking);
}
else # The hard way...not 100% successful :-/
{
my($flags) = fcntl($fh, F_GETFL, 0);
defined($flags) || croak "Can't get flags for socket: $!\n";
if($blocking)
{
fcntl($fh, F_SETFL, $flags & ~O_NONBLOCK) ||
croak "Can't make socket blocking: $!\n";
}
else
{
fcntl($fh, F_SETFL, $flags | O_NONBLOCK) ||
croak "Can't make socket nonblocking: $!\n";
}
}
}
sub _hexdump
{
my($data) = join('', @_);
my($ret, $hex, $ascii, $len, $i);
$len = length($data);
for($i = 0; $i < $len; $i++)
{
if($i > 0)
{
if($i % 4 == 0)
{
$hex .= ' ';
}
if($i % 16 == 0)
{
$ret .= "$hex$ascii\n";
$ascii = $hex = '';
}
}
$hex .= sprintf("%02x ", ord(substr($data, $i, 1)));
$ascii .= sprintf("%c", (ord(substr($data, $i, 1)) > 31 and
ord(substr($data, $i, 1)) < 127) ?
ord(substr($data, $i, 1)) : 46);
}
if(length($hex) < 50)
{
$hex .= ' ' x (50 - length($hex));
}
$ret .= "$hex $ascii\n";
return $ret;
}
1;
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