This file is indexed.

/usr/lib/perl5/Net/SSLeay/Handle.pm is in libnet-ssleay-perl 1.58-1.

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
package Net::SSLeay::Handle;

require 5.005_03;
use strict;

use Socket;
use Net::SSLeay;

require Exporter;

=head1 NAME

Net::SSLeay::Handle - Perl module that lets SSL (HTTPS) sockets be
handled as standard file handles.

=head1 SYNOPSIS

  use Net::SSLeay::Handle qw/shutdown/;
  my ($host, $port) = ("localhost", 443);

  tie(*SSL, "Net::SSLeay::Handle", $host, $port);

  print SSL "GET / HTTP/1.0\r\n";
  shutdown(\*SSL, 1);
  print while (<SSL>);
  close SSL;                                                       

=head1 DESCRIPTION

Net::SSLeay::Handle allows you to request and receive HTTPS web pages
using "old-fashion" file handles as in:

    print SSL "GET / HTTP/1.0\r\n";

and

    print while (<SSL>);

If you export the shutdown routine, then the only extra code that
you need to add to your program is the tie function as in:

    my $socket;
    if ($scheme eq "https") {
        tie(*S2, "Net::SSLeay::Handle", $host, $port);
        $socket = \*S2;
    else {
        $socket = Net::SSLeay::Handle->make_socket($host, $port);
    }
    print $socket $request_headers;
    ... 

=cut

use vars qw(@ISA @EXPORT_OK $VERSION);
@ISA = qw(Exporter);
@EXPORT_OK = qw(shutdown);
$VERSION = '0.61';

my $Initialized;       #-- only _initialize() once
my $Debug = 0;         #-- pretty hokey
my %Glob_Ref;          #-- used to make unique \*S names for versions < 5.6

#== Tie Handle Methods ========================================================
#
# see perldoc perltie for details.
#
#==============================================================================

sub TIEHANDLE {
    my ($class, $socket, $port) = @_;
    $Debug > 10 and print "TIEHANDLE(@{[join ', ', @_]})\n";

    ref $socket eq "GLOB" or $socket = $class->make_socket($socket, $port);

    $class->_initialize();

    my $ctx = Net::SSLeay::CTX_new() or die_now("Failed to create SSL_CTX $!");
    my $ssl = Net::SSLeay::new($ctx) or die_now("Failed to create SSL $!");

    my $fileno = fileno($socket);

  Net::SSLeay::set_fd($ssl, $fileno);   # Must use fileno

    my $resp = Net::SSLeay::connect($ssl);

    $Debug and print "Cipher '" . Net::SSLeay::get_cipher($ssl) . "'\n";

	my $self = bless {
        ssl    => $ssl, 
        ctx    => $ctx,
        socket => $socket,
        fileno => $fileno,
    }, $class;

    return $self;
}

sub PRINT {
    my $self = shift;

    my $ssl  = _get_ssl($self);
    my $resp = 0;
    for my $msg (@_) {
        defined $msg or last;
        $resp = Net::SSLeay::write($ssl, $msg) or last;
    }
    return $resp;
}

sub READLINE {
    my $self = shift;
    my $ssl  = _get_ssl($self);
	if (wantarray) {
		my @lines;
		while (my $line = Net::SSLeay::ssl_read_until($ssl)) {
			push @lines, $line;
		}
		return @lines;
	} else {
		my $line = Net::SSLeay::ssl_read_until($ssl); 
		return $line ? $line : undef;
	}
}

sub READ {
    my ($self, $buf, $len, $offset) = \ (@_);
    my $ssl = _get_ssl($$self);
    defined($$offset) or 
      return length($$buf = Net::SSLeay::ssl_read_all($ssl, $$len));

    defined(my $read = Net::SSLeay::ssl_read_all($ssl, $$len))
      or return undef;

    my $buf_len = length($$buf);
    $$offset > $buf_len and $$buf .= chr(0) x ($$offset - $buf_len);
    substr($$buf, $$offset) = $read;
    return length($read);
}

sub WRITE {
    my $self = shift;
    my ($buf, $len, $offset) = @_;
    $offset = 0 unless defined $offset;

    # Return number of characters written.
    my $ssl  = $self->_get_ssl();
    return $len if Net::SSLeay::write($ssl, substr($buf, $offset, $len));
    return undef;
}

sub CLOSE {
    my $self = shift;
    my $fileno = $self->{fileno};
    $Debug > 10 and print "close($fileno)\n";
    Net::SSLeay::free ($self->{ssl});
    Net::SSLeay::CTX_free ($self->{ctx});
    close $self->{socket};
}

sub FILENO  { $_[0]->{fileno} }


=head1 FUNCTIONS

=over

=item shutdown

  shutdown(\*SOCKET, $mode)

Calls to the main shutdown() don't work with tied sockets created with this
module.  This shutdown should be able to distinquish between tied and untied
sockets and do the right thing.

=cut

sub shutdown {
    my ($obj, @params) = @_;

	my $socket = UNIVERSAL::isa($obj, 'Net::SSLeay::Handle') ?
		$obj->{socket} : $obj;
    return shutdown($socket, @params);
}

=item debug

  my $debug = Net::SSLeay::Handle->debug()
  Net::SSLeay::Handle->debug(1)

Get/set debuging mode. Always returns the debug value before the function call.
if an additional argument is given the debug option will be set to this value.

=cut

sub debug {
    my ($class, $debug) = @_;
    my $old_debug = $Debug;
    @_ >1 and $Debug = $debug || 0;
    return $old_debug;
}

#=== Internal Methods =========================================================

=item make_socket

  my $sock = Net::SSLeay::Handle->make_socket($host, $port);

Creates a socket that is connected to $post using $port. It uses
$Net::SSLeay::proxyhost and proxyport if set and authentificates itself against
this proxy depending on $Net::SSLeay::proxyauth. It also turns autoflush on for
the created socket.

=cut

sub make_socket {
    my ($class, $host, $port) = @_;
    $Debug > 10 and print "_make_socket(@{[join ', ', @_]})\n";
    $host ||= 'localhost';
    $port ||= 443;

    my $phost = $Net::SSLeay::proxyhost;
    my $pport = $Net::SSLeay::proxyhost ? $Net::SSLeay::proxyport : $port;

    my $dest_ip     = gethostbyname($phost || $host);
    my $host_params = sockaddr_in($pport, $dest_ip);
    my $socket = $^V ? undef : $class->_glob_ref("$host:$port");
    
    socket($socket, &PF_INET(), &SOCK_STREAM(), 0) or die "socket: $!";
    connect($socket, $host_params)                 or die "connect: $!";

    my $old_select = select($socket); $| = 1; select($old_select);
    $phost and do {
        my $auth = $Net::SSLeay::proxyauth;
        my $CRLF = $Net::SSLeay::CRLF;
        print $socket "CONNECT $host:$port HTTP/1.0$auth$CRLF$CRLF";
        my $line = <$socket>;
    };
    return $socket;
}

=back

=cut

#--- _glob_ref($strings) ------------------------------------------------------
#
# Create a unique namespace name and return a glob ref to it.  Would be great
# to use the fileno but need this before we get back the fileno.
# NEED TO LOCK THIS ROUTINE IF USING THREADS. (but it is only used for
# versions < 5.6 :)
#------------------------------------------------------------------------------

sub _glob_ref {
    my $class = shift;
    my $preamb = join("", @_) || "_glob_ref";
    my $num = ++$Glob_Ref{$preamb};
    my $name = "$preamb:$num";
    no strict 'refs';
    my $glob_ref = \*$name;
    use strict 'refs';

    $Debug and do {
        print "GLOB_REF $preamb\n";
        while (my ($k, $v) = each %Glob_Ref) {print "$k = $v\n"} 
        print "\n";
    };

    return $glob_ref;
}

sub _initialize {
    $Initialized++ and return;
  Net::SSLeay::load_error_strings();
  Net::SSLeay::SSLeay_add_ssl_algorithms();
  Net::SSLeay::randomize();
}

sub __dummy {
    my $host = $Net::SSLeay::proxyhost;
    my $port = $Net::SSLeay::proxyport;
    my $auth = $Net::SSLeay::proxyauth;
}

#--- _get_self($socket) -------------------------------------------------------
# Returns a hash containing attributes for $socket (= \*SOMETHING) based
# on fileno($socket).  Will return undef if $socket was not created here.
#------------------------------------------------------------------------------

sub _get_self { return $_[0]; }

#--- _get_ssl($socket) --------------------------------------------------------
# Returns a the "ssl" attribute for $socket (= \*SOMETHING) based
# on fileno($socket).  Will cause a warning and return undef if $socket was not
# created here.
#------------------------------------------------------------------------------

sub _get_ssl {
    return $_[0]->{ssl};
}

1;

__END__

=head2 USING EXISTING SOCKETS

One of the motivations for writing this module was to avoid
duplicating socket creation code (which is mostly error handling).
The calls to tie() above where it is passed a $host and $port is
provided for convenience testing.  If you already have a socket
connected to the right host and port, S1, then you can do something
like:

    my $socket \*S1;
    if ($scheme eq "https") {
        tie(*S2, "Net::SSLeay::Handle", $socket);
        $socket = \*S2;
    }
    my $last_sel = select($socket); $| = 1; select($last_sel);
    print $socket $request_headers;
    ... 

Note: As far as I know you must be careful with the globs in the tie()
function.  The first parameter must be a glob (*SOMETHING) and the
last parameter must be a reference to a glob (\*SOMETHING_ELSE) or a
scaler that was assigned to a reference to a glob (as in the example
above)

Also, the two globs must be different.  When I tried to use the same
glob, I got a core dump.

=head2 EXPORT

None by default.

You can export the shutdown() function.

It is suggested that you do export shutdown() or use the fully
qualified Net::SSLeay::Handle::shutdown() function to shutdown SSL
sockets.  It should be smart enough to distinguish between SSL and
non-SSL sockets and do the right thing.

=head1 EXAMPLES

  use Net::SSLeay::Handle qw/shutdown/;
  my ($host, $port) = ("localhost", 443);

  tie(*SSL, "Net::SSLeay::Handle", $host, $port);

  print SSL "GET / HTTP/1.0\r\n";
  shutdown(\*SSL, 1);
  print while (<SSL>);
  close SSL; 

=head1 TODO

Better error handling.  Callback routine?

=head1 CAVEATS

Tying to a file handle is a little tricky (for me at least).

The first parameter to tie() must be a glob (*SOMETHING) and the last
parameter must be a reference to a glob (\*SOMETHING_ELSE) or a scaler
that was assigned to a reference to a glob ($s = \*SOMETHING_ELSE).
Also, the two globs must be different.  When I tried to use the same
glob, I got a core dump.

I was able to associate attributes to globs created by this module
(like *SSL above) by making a hash of hashes keyed by the file head1.

Support for old perls may not be 100%. If in trouble try 5.6.0 or
newer.

=head1 CHANGES

Please see Net-SSLeay-Handle-0.50/Changes file.

=head1 KNOWN BUGS

If you let this module construct sockets for you with Perl versions
below v.5.6 then there is a slight memory leak.  Other upgrade your
Perl, or create the sockets yourself.  The leak was created to let
these older versions of Perl access more than one Handle at a time.

=head1 AUTHOR

Jim Bowlin jbowlin@linklint.org

=head1 SEE ALSO

Net::SSLeay, perl(1), http://openssl.org/

=cut