/usr/share/perl5/Net/Server/HTTP.pm is in libnet-server-perl 0.99-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# Net::Server::HTTP - Extensible Perl HTTP base server
#
# $Id: HTTP.pm,v 1.9 2010/07/13 19:15:16 rhandom Exp $
#
# Copyright (C) 2010
#
# Paul Seamons
# paul@seamons.com
# http://seamons.com/
#
# This package may be distributed under the terms of either the
# GNU General Public License
# or the
# Perl Artistic License
#
################################################################
package Net::Server::HTTP;
use strict;
use warnings;
use base qw(Net::Server::MultiType);
use vars qw($VERSION);
use Scalar::Util qw(weaken);
$VERSION = $Net::Server::VERSION; # done until separated
sub options {
my ($self, $ref) = @_;
my $prop = $self->{server};
$self->SUPER::options($ref);
foreach ( qw(timeout_header
timeout_idle
server_revision
max_header_size
) ){
$prop->{$_} = undef unless exists $prop->{$_};
$ref->{$_} = \$prop->{$_};
}
}
### make sure some defaults are set
sub post_configure {
my $self = shift;
my $prop = $self->{server};
$self->SUPER::post_configure;
my $d = {
timeout_header => 15,
timeout_idle => 60,
server_revision => __PACKAGE__."/$VERSION",
max_header_size => 100_000,
};
$prop->{$_} = $d->{$_} foreach grep {!defined($prop->{$_})} keys %$d;
}
sub timeout_header { shift->{'server'}->{'timeout_header'} }
sub timeout_idle { shift->{'server'}->{'timeout_idle'} }
sub server_revision { shift->{'server'}->{'server_revision'} }
sub max_header_size { shift->{'server'}->{'max_header_size'} }
sub default_port { 80 }
sub default_server_type { 'Fork' }
sub pre_bind {
my $self = shift;
my $prop = $self->{'server'};
# install a callback that will handle our outbound header negotiation for the clients similar to what apache does for us
my $copy = $self;
$prop->{'tie_client_stdout'} = 1;
$prop->{'tied_stdout_callback'} = sub {
my $client = shift;
my $method = shift;
alarm($copy->timeout_idle); # reset timeout
return $client->$method(@_) if ${*$client}{'headers_sent'};
if ($method ne 'print') {
$client->print("HTTP/1.0 501 Print\r\nContent-type:text/html\r\n\r\nHeaders may only be sent via print method ($method)");
die "All headers must be done via print";
}
my $headers = ${*$client}{'headers'} || '';
$headers .= join '', @_;
if ($headers !~ /\n\r?\n/) { # headers aren't finished yet
${*$client}{'headers'} = $headers;
return;
}
${*$client}{'headers_sent'} = 1;
delete ${*$client}{'headers'};
if ($headers =~ m{^HTTP/1.[01] \s+ \d+ (?: | \s+ .+)\r?\n}) {
# looks like they are sending their own status
}
elsif ($headers =~ /^Status:\s+(\d+) (?:|\s+(.+?))\s*$/im) {
$copy->send_status($1, $2 || '-');
}
elsif ($headers =~ /^Location:\s+/im) {
$copy->send_status(302, 'bouncing');
}
elsif ($headers =~ /^Content-type:\s+\S.*/im) {
$copy->send_status(200, 'OK');
}
else {
$copy->send_501("Not sure what type of headers to send - couldn't find valid headers");
}
return $client->print($headers);
};
weaken $copy;
return $self->SUPER::pre_bind(@_);
}
sub send_status {
my ($self, $status, $msg) = @_;
$msg ||= ($status == 200) ? 'OK' : '-';
print "HTTP/1.0 $status $msg\r\n";
print "Date: ".gmtime()." GMT\r\n";
print "Connection: close\r\n";
print "Server: ".$self->server_revision."\r\n";
}
sub send_501 {
my ($self, $err) = @_;
$self->send_status(500, 'Died');
print "Content-type: text/html\r\n\r\n";
print "<h1>Internal Server</h1>";
print "<p>$err</p>";
}
###----------------------------------------------------------------###
sub get_client_info {
my $self = shift;
$self->SUPER::get_client_info(@_);
$self->clear_http_env;
}
sub clear_http_env {
my $self = shift;
%ENV = ();
}
sub process_request {
my $self = shift;
local $SIG{'ALRM'} = sub { die "Server Timeout\n" };
my $ok = eval {
alarm($self->timeout_header);
$self->process_headers;
alarm($self->timeout_idle);
$self->process_http_request;
alarm(0);
1;
};
alarm(0);
if (! $ok) {
my $err = "$@" || "Something happened";
$self->send_501($err);
die $err;
}
}
sub script_name { shift->{'script_name'} || $0 }
sub process_headers {
my $self = shift;
$ENV{'REMOTE_PORT'} = $self->{'server'}->{'peerport'};
$ENV{'REMOTE_ADDR'} = $self->{'server'}->{'peeraddr'};
$ENV{'SERVER_PORT'} = $self->{'server'}->{'sockport'};
$ENV{'SERVER_ADDR'} = $self->{'server'}->{'sockaddr'};
$ENV{'HTTPS'} = 'on' if $self->{'server'}->{'client'}->NS_proto eq 'SSLEAY';
my ($ok, $headers) = $self->{'server'}->{'client'}->read_until($self->max_header_size, qr{\n\r?\n});
die "Couldn't parse headers successfully" if $ok != 1;
my ($req, @lines) = split /\r?\n/, $headers;
if ($req !~ m{ ^\s*(GET|POST|PUT|DELETE|PUSH|HEAD)\s+(.+)\s+HTTP/1\.[01]\s*$ }x) {
die "Invalid request\n";
}
$ENV{'REQUEST_METHOD'} = $1;
$ENV{'REQUEST_URI'} = $2;
$ENV{'QUERY_STRING'} = $1 if $ENV{'REQUEST_URI'} =~ m{ \?(.*)$ }x;
$ENV{'PATH_INFO'} = $1 if $ENV{'REQUEST_URI'} =~ m{^([^\?]+)};
$ENV{'SCRIPT_NAME'} = $self->script_name($ENV{'PATH_INFO'}) || '';
my $type = $Net::Server::HTTP::ISA[0];
$type = $Net::Server::MultiType::ISA[0] if $type eq 'Net::Server::MultiType';
$ENV{'NET_SERVER_TYPE'} = $type;
$ENV{'NET_SERVER_SOFTWARE'} = $self->server_revision;
foreach my $l (@lines) {
my ($key, $val) = split /\s*:\s*/, $l, 2;
$key = uc($key);
$key =~ y/-/_/;
$key =~ s/^\s+//;
$key = "HTTP_$key" if $key ne 'CONTENT_LENGTH';
$val =~ s/\s+$//;
$ENV{$key} = $val;
}
}
sub process_http_request {
my $self = shift;
print "Content-type: text/html\n\n";
print "<form method=post action=/bam><input type=text name=foo><input type=submit></form>\n";
if (require Data::Dumper) {
local $Data::Dumper::Sortkeys = 1;
my $form = {};
if (require CGI) { my $q = CGI->new; $form->{$_} = $q->param($_) for $q->param; }
print "<pre>".Data::Dumper->Dump([\%ENV, $form], ['*ENV', 'form'])."</pre>";
}
}
1;
__END__
=head1 NAME
Net::Server::HTTP - very basic Net::Server based HTTP server class
=head1 TEST ONE LINER
perl -e 'use Net::Server::HTTP; Net::Server::HTTP->run(port=>8080)'
=head1 SYNOPSIS
use base qw(Net::Server::HTTP);
__PACKAGE__->run;
sub process_http_request {
my $self = shift;
print "Content-type: text/html\n\n";
print "<form method=post action=/bam><input type=text name=foo><input type=submit></form>\n";
if (require Data::Dumper) {
local $Data::Dumper::Sortkeys = 1;
my $form = {};
if (require CGI) { my $q = CGI->new; $form->{$_} = $q->param($_) for $q->param; }
print "<pre>".Data::Dumper->Dump([\%ENV, $form], ['*ENV', 'form'])."</pre>";
}
}
=head1 DESCRIPTION
Even though Net::Server::HTTP doesn't fall into the normal parallel of the other Net::Server flavors,
handling HTTP requests is an often requested feature and is a standard and simple protocol.
Net::Server::HTTP begins with base type MultiType defaulting to Net::Server::Fork. It is easy
to change it to any of the other Net::Server flavors by passing server_type => $other_flavor in the
server configurtation. The port has also been defaulted to port 80 - but could easily be changed to
another through the server configuration.
=head1 METHODS
=over 4
=item C<process_http_request>
During this method, the %ENV will have been set to a standard CGI style environment. You will need to
be sure to print the Content-type header. This is one change from the other standard Net::Server
base classes.
During this method you can read from ENV and STDIN just like a normal HTTP request in other web servers.
You can print to STDOUT and Net::Server will handle the header negotiation for you.
Note: Net::Server::HTTP has no concept of document root or script aliases or default handling of
static content. That is up to the consumer of Net::Server::HTTP to work out.
Net::Server::HTTP comes with a basic ENV display installed as the default process_request method.
=item C<process_request>
This method has been overridden in Net::Server::HTTP - you should not use it while using Net::Server::HTTP.
This method parses the environment and sets up request alarms and handles dying failures. It calls
process_http_request once the request is ready.
=item C<send_status>
Takes an HTTP status and a message. Sends out the correct headers.
=item C<send_501>
Calls send_status with 501 and the argument passed to send_501.
=back
=head1 COMMAND LINE ARGUMENTS
In addition to the command line arguments of the Net::Server
base classes you can also set the following options.
=over 4
=item max_header_size
Defaults to 100_000. Maximum number of bytes to read while parsing headers.
=item server_revision
Defaults to Net::Server::HTTP/$Net::Server::VERSION.
=item timeout_header
Defaults to 15 - number of seconds to wait for parsing headers.
=item timeout_idle
Defaults to 60 - number of seconds a request can be idle before
the request is closed.
=back
=head1 TODO
Add support for writing out HTTP/1.1.
=head1 AUTHOR
Paul T. Seamons paul@seamons.com
=head1 THANKS
See L<Net::Server>
=head1 SEE ALSO
Please see also
L<Net::Server::Fork>,
L<Net::Server::INET>,
L<Net::Server::PreFork>,
L<Net::Server::PreForkSimple>,
L<Net::Server::MultiType>,
L<Net::Server::Single>
L<Net::Server::SIG>
L<Net::Server::Daemonize>
L<Net::Server::Proto>
=cut
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