/usr/local/CPAN/RayApp/RayApp/mod_perl.pm
package RayApp::mod_perl;
use RayApp ();
use Apache::Response ();
use Apache::RequestRec ();
use Apache::Const -compile => qw(OK SERVER_ERROR DECLINED NOT_FOUND);
use APR::Table ();
use Apache::RequestIO ();
use IO::ScalarArray ();
use strict;
sub print_errors (@) {
my $err_in_browser = pop;
if ($err_in_browser) {
print @_;
}
print STDERR @_;
}
my $rayapp;
sub handler {
my $r = shift;
my $uri = $r->filename();
if ($uri =~ m!/$! and defined $ENV{'RAYAPP_DIRECTORY_INDEX'}) {
$uri .= $ENV{'RAYAPP_DIRECTORY_INDEX'};
}
if ($uri =~ /\.html$/ and -f $uri) {
$r->filename($uri);
return Apache::DECLINED;
}
my $err_in_browser = ( defined $ENV{'RAYAPP_ERRORS_IN_BROWSER'}
and $ENV{'RAYAPP_ERRORS_IN_BROWSER'} );
$rayapp = new RayApp( 'cache' => 1 ) if not defined $rayapp;
my ($type, $dsd, $data, @stylesheets, @style_params);
my $stripped_uri = $uri;
$stripped_uri =~ s/\.(xml|html|txt|pdf|fo)$// and $type = $1;
if ($type eq 'html'
and defined $ENV{'RAYAPP_HTML_STYLESHEETS'}) {
@stylesheets = split /:/, $ENV{'RAYAPP_HTML_STYLESHEETS'};
} elsif ($type eq 'txt'
and defined $ENV{'RAYAPP_TXT_STYLESHEETS'}) {
@stylesheets = split /:/, $ENV{'RAYAPP_TXT_STYLESHEETS'};
} elsif (($type eq 'pdf' or $type eq 'fo')
and defined $ENV{'RAYAPP_FO_STYLESHEETS'}) {
@stylesheets = split /:/, $ENV{'RAYAPP_FO_STYLESHEETS'};
}
if ($type ne 'xml' and not @stylesheets) {
my $styleuri = $uri;
$styleuri =~ s/\.[^\.]+$//;
@stylesheets = RayApp::find_stylesheet($styleuri, $type);
}
if (-f $stripped_uri . '.xml') {
$uri = $stripped_uri . '.xml';
$r->filename($uri);
$dsd = $rayapp->load_xml($uri) or do {
$r->content_type('text/plain');
$r->print("Broken RayApp setup, XML not available, sorry.\n");
print_errors "Reading XML [$uri] failed: ",
$rayapp->errstr, "\n", $err_in_browser;
return Apache::SERVER_ERROR;
};
if ($type ne 'xml') {
bless $dsd, 'RayApp::DSD';
}
} else {
if ($uri =~ s/\.(xml|html|txt|pdf|fo)$//) {
$type = $1;
for my $ext ('.dsd') {
if (-f $uri . $ext) {
$uri .= $ext;
last;
}
}
}
$dsd = $rayapp->load_dsd($uri);
if (not defined $dsd) {
if (not -f $uri) {
return Apache::NOT_FOUND;
}
$r->content_type('text/plain');
$r->print("Broken RayApp setup, failed to load DSD, sorry.\n");
print_errors "Loading DSD [$uri] failed: ",
$rayapp->errstr, "\n", $err_in_browser;
return Apache::SERVER_ERROR;
}
my $application = $dsd->application_name;
if (not defined $application) {
my $appuri = $uri;
$appuri =~ s/\.[^\.]+$//;
my $ok = 0;
for my $ext ('.pl', '.mpl', '.xpl') {
if (-f $appuri . $ext) {
$application = $appuri . $ext;
$ok = 1;
last;
}
}
if (not $ok) {
$r->content_type('text/plain');
$r->print("Broken RayApp setup, failed to find application, sorry.\n");
return Apache::SERVER_ERROR;
}
}
my @params;
if (defined $ENV{'RAYAPP_INPUT_MODULE'}) {
eval "use $ENV{'RAYAPP_INPUT_MODULE'};";
if ($@) {
$r->content_type('text/plain');
$r->print("Broken RayApp setup, failed to load input module, sorry.\n");
print_errors "Error loading [$ENV{'RAYAPP_INPUT_MODULE'}]\n",
$@, $err_in_browser;
return Apache::SERVER_ERROR;
}
my $handler = "$ENV{'RAYAPP_INPUT_MODULE'}::handler";
{
no strict;
eval { @params = &{ $handler }($dsd, $r); };
}
if ($@) {
$r->content_type('text/plain');
$r->print("Broken RayApp setup, failed to run input module, sorry.\n");
print_errors "Error executing [$ENV{'RAYAPP_INPUT_MODULE'}]\n",
$@, $err_in_browser;
return Apache::SERVER_ERROR;
}
}
if (defined $ENV{'RAYAPP_STYLE_PARAMS_MODULE'}) {
eval "use $ENV{'RAYAPP_STYLE_PARAMS_MODULE'};";
if ($@) {
$r->content_type('text/plain');
$r->print("Broken RayApp setup, failed to load style params module, sorry.\n");
print_errors "Error loading [$ENV{'RAYAPP_STYLE_PARAMS_MODULE'}]\n",
$@, $err_in_browser;
return Apache::SERVER_ERROR;
}
my $handler = "$ENV{'RAYAPP_STYLE_PARAMS_MODULE'}::handler";
{
no strict;
eval { @style_params = &{ $handler }($dsd, @params); };
}
if ($@) {
$r->content_type('text/plain');
$r->print("Broken RayApp setup, failed to run style params module, sorry.\n");
print_errors "Error executing [$ENV{'RAYAPP_STYLE_PARAMS_MODULE'}]\n",
$@, $err_in_browser;
return Apache::SERVER_ERROR;
}
}
my $tied = tied *STDOUT;
my @stdout_data;
my $err;
{
local *STDOUT;
binmode STDOUT, ':bytes';
tie *STDOUT, 'IO::ScalarArray', \@stdout_data;
eval { $data = $rayapp->execute_application_handler_reuse($application, @params) };
$err = $@;
if ($tied) {
tie *STDOUT, $tied;
} else {
untie *STDOUT;
}
}
for (@params) {
if (defined $_ and ref $_ and $_->can('disconnect')) {
eval { $_->rollback; };
eval { $_->disconnect; };
}
}
if ($err) {
$r->content_type('text/plain');
$r->print("Broken RayApp setup, failed to run the application, sorry.\n");
print_errors "Error executing [$application]\n",
$err, $err_in_browser;
return Apache::SERVER_ERROR;
}
if (not ref $data and $data eq '500') {
$r->content_type('text/plain');
$r->print("Broken RayApp setup, failed to run the application, sorry.\n");
print_errors "Error executing [$application]\n",
$rayapp->errstr, $err_in_browser;
return Apache::SERVER_ERROR;
}
if (not ref $data) {
# handler already sent the response itself, we've got it
# in @stdout_data
$r->status($data);
$r->send_cgi_header(join '', @stdout_data);
return Apache::OK;
}
}
if (not @stylesheets) {
my $output;
if (ref $dsd eq 'HASH') {
$output = $dsd->{content};
} else {
$output = $dsd->serialize_data($data, { RaiseError => 0 });
if ($dsd->errstr) {
$r->content_type('text/plain');
$r->print("Broken RayApp setup, data serialization failed, sorry.\n");
print_errors "Serialization failed for [$0]: ",
$dsd->errstr, "\n", $err_in_browser;
return Apache::SERVER_ERROR;
}
$r->headers_out->{'Pragma'} = 'no-cache';
$r->headers_out->{'Cache-control'} = 'no-cache';
}
$r->content_type('text/xml');
$r->print($output) unless $r->header_only;
return Apache::OK;
} else {
my ($output, $media, $charset) = $dsd->serialize_style($data,
{
'rayapp' => $rayapp,
( scalar(@style_params)
? ( style_params => \@style_params )
: () ),
RaiseError => 0,
},
@stylesheets);
if ($dsd->errstr or not defined $output) {
$r->content_type('text/plain');
$r->print("Broken RayApp setup, failed to serialize and style your data, sorry.\n");
print_errors
"Serialization and styling failed for [$0]: ",
$dsd->errstr, "\n", $err_in_browser;
return Apache::SERVER_ERROR;
}
if ($type eq 'pdf') {
require File::Temp;
my $processor = $ENV{'RAYAPP_FO_PROCESSOR'};
if (not defined $processor) {
$processor = 'fop %IN -pdf %OUT';
}
my $in = new File::Temp(
TEMPLATE => 'rayappXXXXXX',
SUFFIX => '.fo',
DIR => '/tmp',
);
my $out = new File::Temp(
TEMPLATE => 'rayappXXXXXX',
SUFFIX => '.pdf',
DIR => '/tmp',
);
unless ($processor =~ s/%IN/ $in->filename() /ge
and $processor =~ s/%OUT/ $out->filename() /ge) {
$r->content_type('text/plain');
$r->print("Broken RayApp setup, PDF generation failed, sorry.\n");
print_errors "Processor line [$processor] has to have both %IN and %OUT\n", $err_in_browser;
return Apache::SERVER_ERROR;
}
print { $in } $output;
$in->close();
print STDERR "Calling [$processor]\n";
system($processor);
local $/ = undef;
$output = < $out >;
$media = 'application/pdf';
$charset = undef;
} else {
$r->headers_out->{'Pragma'} = 'no-cache';
$r->headers_out->{'Cache-control'} = 'no-cache';
}
if (defined $media) {
if (defined $charset) {
$media .= "; charset=$charset";
}
if ($r->headers_out->{'Content-Type'} ne $media) {
$r->content_type($media);
}
}
$r->print($output) unless $r->header_only;
return Apache::OK;
}
return Apache::SERVER_ERROR;
}
1;