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/usr/share/fusioninventory/lib/FusionInventory/Agent/HTTP/Client/OCS.pm is in fusioninventory-agent 1:2.3.10.1-1.

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package FusionInventory::Agent::HTTP::Client::OCS;

use strict;
use warnings;
use base 'FusionInventory::Agent::HTTP::Client';

use English qw(-no_match_vars);
use HTTP::Request;
use UNIVERSAL::require;
use URI;
use Encode;

use FusionInventory::Agent::Tools;
use FusionInventory::Agent::XML::Response;

my $log_prefix = "[http client] ";

sub new {
    my ($class, %params) = @_;

    my $self = $class->SUPER::new(%params);

    $self->{ua}->default_header('Pragma' => 'no-cache');

    # check compression mode
    if (Compress::Zlib->require()) {
        # RFC 1950
        $self->{compression} = 'zlib';
        $self->{ua}->default_header('Content-type' => 'application/x-compress-zlib');
        $self->{logger}->debug(
            $log_prefix .
            'Using Compress::Zlib for compression'
        );
    } elsif (canRun('gzip')) {
        # RFC 1952
        $self->{compression} = 'gzip';
        $self->{ua}->default_header('Content-type' => 'application/x-compress-gzip');
        $self->{logger}->debug(
            $log_prefix .
            'Using gzip for compression'
        );
    } else {
        $self->{compression} = 'none';
        $self->{ua}->default_header('Content-type' => 'application/xml');
        $self->{logger}->debug(
            $log_prefix .
            'Not using compression'
        );
    }

    return $self;
}

sub send { ## no critic (ProhibitBuiltinHomonyms)
    my ($self, %params) = @_;

    my $url = ref $params{url} eq 'URI' ?
        $params{url} : URI->new($params{url});
    my $message = $params{message};
    my $logger  = $self->{logger};

    my $request_content = $message->getContent();
    $logger->debug2($log_prefix . "sending message:\n $request_content");

    $request_content = $self->_compress(encode('UTF-8', $request_content));
    if (!$request_content) {
        $logger->error($log_prefix . 'inflating problem');
        return;
    }

    my $request = HTTP::Request->new(POST => $url);
    $request->content($request_content);

    my $response = $self->request($request);

    # no need to log anything specific here, it has already been done
    # in parent class
    return if !$response->is_success();

    my $response_content = $response->content();
    if (!$response_content) {
        $logger->error($log_prefix . "unknown content format");
        return;
    }

    my $uncompressed_response_content = $self->_uncompress($response_content);
    if (!$uncompressed_response_content) {
        $logger->error(
            $log_prefix . "uncompressed content, starting with: ".substr($response_content, 0, 500)
        );
        return;
    }

    $logger->debug2($log_prefix . "receiving message:\n $uncompressed_response_content");

    my $result;
    eval {
        $result = FusionInventory::Agent::XML::Response->new(
            content => $uncompressed_response_content
        );
    };
    if ($EVAL_ERROR) {
        my @lines = split(/\n/, $uncompressed_response_content);
        $logger->error(
            $log_prefix . "unexpected content, starting with $lines[0]"
        );
        return;
    }

    return $result;
}

sub _compress {
    my ($self, $data) = @_;

    return
        $self->{compression} eq 'zlib' ? $self->_compressZlib($data) :
        $self->{compression} eq 'gzip' ? $self->_compressGzip($data) :
                                         $data;
}

sub _uncompress {
    my ($self, $data) = @_;

    if ($data =~ /(\x78\x9C.*)/s) {
        $self->{logger}->debug2("format: Zlib");
        return $self->_uncompressZlib($1);
    } elsif ($data =~ /(\x1F\x8B\x08.*)/s) {
        $self->{logger}->debug2("format: Gzip");
        return $self->_uncompressGzip($1);
    } elsif ($data =~ /(<html><\/html>|)[^<]*(<.*>)\s*$/s) {
        $self->{logger}->debug2("format: Plaintext");
        return $2;
    } else {
        $self->{logger}->debug2("format: Unknown");
        return;
    }
}

sub _compressZlib {
    my ($self, $data) = @_;

    return Compress::Zlib::compress($data);
}

sub _compressGzip {
    my ($self, $data) = @_;

    File::Temp->require();
    my $in = File::Temp->new();
    print $in $data;
    close $in;

    my $out = getFileHandle(
        command => 'gzip -c ' . $in->filename(),
        logger  => $self->{logger}
    );
    return unless $out;

    local $INPUT_RECORD_SEPARATOR; # Set input to "slurp" mode.
    my $result = <$out>;
    close $out;

    return $result;
}

sub _uncompressZlib {
    my ($self, $data) = @_;

    return Compress::Zlib::uncompress($data);
}

sub _uncompressGzip {
    my ($self, $data) = @_;

    my $in = File::Temp->new();
    print $in $data;
    close $in;

    my $out = getFileHandle(
        command => 'gzip -dc ' . $in->filename(),
        logger  => $self->{logger}
    );
    return unless $out;

    local $INPUT_RECORD_SEPARATOR; # Set input to "slurp" mode.
    my $result = <$out>;
    close $out;

    return $result;
}

1;
__END__

=head1 NAME

FusionInventory::Agent::HTTP::Client::OCS - An HTTP client using OCS protocol

=head1 DESCRIPTION

This is the object used by the agent to send messages to OCS or GLPI servers,
using original OCS protocol (XML messages sent through POST requests).

=head1 METHODS

=head2 send(%params)

Send an instance of C<FusionInventory::Agent::XML::Query> to the target (the
server).

The following parameters are allowed, as keys of the %params
hash:

=over

=item I<url>

the url to send the message to (mandatory)

=item I<message>

the message to send (mandatory)

=back

This method returns an C<FusionInventory::Agent::XML::Response> instance.