package App::DuckPAN::Web;
BEGIN {
$App::DuckPAN::Web::AUTHORITY = 'cpan:GETTY';
}
{
$App::DuckPAN::Web::VERSION = '0.059';
}
use Moo;
use DDG::Request;
use DDG::Test::Location;
use DDG::Test::Language;
use Plack::Request;
use Plack::Response;
use HTML::Entities;
use HTML::TreeBuilder;
use HTML::Element;
use Data::Printer;
use IO::All -utf8;
use HTTP::Request;
use LWP::UserAgent;
use URI::Escape;
use Data::Dumper;
has blocks => ( is => 'ro', required => 1 );
has page_root => ( is => 'ro', required => 1 );
has page_spice => ( is => 'ro', required => 1 );
has page_css => ( is => 'ro', required => 1 );
has page_js => ( is => 'ro', required => 1 );
has _share_dir_hash => ( is => 'rw' );
has _path_hash => ( is => 'rw' );
has _rewrite_hash => ( is => 'rw' );
has ua => (
is => 'ro',
default => sub {
LWP::UserAgent->new(
agent => "Mozilla/5.0", #User Agent required for some API's (eg. Vimeo, IsItUp)
timeout => 5,
ssl_opts => { verify_hostname => 0 },
);
},
);
sub BUILD {
my ( $self ) = @_;
my %share_dir_hash;
my %path_hash;
my %rewrite_hash;
for (@{$self->blocks}) {
for (@{$_->only_plugin_objs}) {
if ($_->does('DDG::IsSpice')) {
$rewrite_hash{ref $_} = $_->rewrite if $_->has_rewrite;
$share_dir_hash{$_->module_share_dir} = ref $_ if $_->can('module_share_dir');
$path_hash{$_->path} = ref $_ if $_->can('path');
}
}
}
$self->_share_dir_hash(\%share_dir_hash);
$self->_path_hash(\%path_hash);
$self->_rewrite_hash(\%rewrite_hash);
}
sub run_psgi {
my ( $self, $env ) = @_;
my $request = Plack::Request->new($env);
my $response = $self->request($request);
return $response->finalize;
}
sub request {
my ( $self, $request ) = @_;
my @path_parts = split(/\/+/,$request->request_uri);
shift @path_parts;
my $response = Plack::Response->new(200);
my $body;
if (@path_parts && $path_parts[0] eq 'share') {
my $filename = pop @path_parts;
my $share_dir = join('/',@path_parts);
my $filename_path = $self->_share_dir_hash->{$share_dir}->can('share')->($filename);
$body = -f $filename_path ? io($filename_path)->slurp : "";
} elsif (@path_parts && $path_parts[0] eq 'js') {
for (keys %{$self->_path_hash}) {
if ($request->request_uri =~ m/^$_/g) {
my $path_remainder = $request->request_uri;
$path_remainder =~ s/^$_//;
$path_remainder =~ s/\/+/\//g;
$path_remainder =~ s/^\///;
my $spice_class = $self->_path_hash->{$_};
my $rewrite = $self->_rewrite_hash->{$spice_class};
die "Spice tested here must have a rewrite..." unless $rewrite;
my $from = $rewrite->from;
my $re = $rewrite->has_from ? qr{$from} : qr{(.*)};
if (my @captures = $path_remainder =~ m/$re/) {
my $to = $rewrite->parsed_to;
for (1..@captures) {
my $index = $_-1;
my $cap_from = '\$'.$_;
my $cap_to = $captures[$index];
if (defined $cap_to) {
$to =~ s/$cap_from/$cap_to/g;
} else {
$to =~ s/$cap_from//g;
}
}
p($to);
my $res = $self->ua->request(HTTP::Request->new(
GET => $to,
[ $rewrite->accept_header ? ("Accept", $rewrite->accept_header) : () ]
));
if ($res->is_success) {
$body = $res->decoded_content;
warn "Cannot use wrap_jsonp_callback and wrap_string callback at the same time!" if $rewrite->wrap_jsonp_callback && $rewrite->wrap_string_callback;
if ($rewrite->wrap_jsonp_callback && $rewrite->callback) {
$body = $rewrite->callback.'('.$body.');';
}
elsif ($rewrite->wrap_string_callback && $rewrite->callback) {
$body =~ s/"/\\"/g;
$body =~ s/\n/\\n/g;
$body =~ s/\r//g;
$body = $rewrite->callback.'("'.$body.'");';
}
$response->code($res->code);
$response->content_type($res->content_type);
} else {
warn $res->status_line, "\n";
$body = "";
}
}
}
}
} elsif ($request->param('duckduckhack_ignore')) {
$body = "";
} elsif ($request->param('duckduckhack_css')) {
$response->content_type('text/css');
$body = $self->page_css;
} elsif ($request->param('duckduckhack_js')) {
$response->content_type('text/javascript');
$body = $self->page_js;
} elsif ($request->param('q')) {
my $query = $request->param('q');
Encode::_utf8_on($query);
my $ddg_request = DDG::Request->new(
query_raw => $query,
location => test_location_by_env(),
language => test_language_by_env(),
);
my $result;
for (@{$self->blocks}) {
($result) = $_->request($ddg_request);
last if $result;
}
my $page = $self->page_spice;
my $uri_encoded_query = uri_escape_utf8($query, "^A-Za-z");
my $html_encoded_query = encode_entities($query);
my $uri_encoded_ddh = quotemeta(uri_escape('duckduckhack-template-for-spice', "^A-Za-z"));
$page =~ s/duckduckhack-template-for-spice/$html_encoded_query/g;
$page =~ s/$uri_encoded_ddh/$uri_encoded_query/g;
p($result) if $result;
if (ref $result eq 'DDG::ZeroClickInfo::Spice') {
my $call_extf = $result->caller->module_share_dir.'/spice.js';
my $call_extc = $result->caller->module_share_dir.'/spice.css';
my $call_ext = $result->call_path;
$page =~ s/####DUCKDUCKHACK-CALL-EXT####/$call_ext/g;
$page =~ s/####DUCKDUCKHACK-CALL-EXTC####/$call_extc/g;
$page =~ s/####DUCKDUCKHACK-CALL-EXTF####/$call_extf/g;
} else {
my $root = HTML::TreeBuilder->new;
if ($result) {
$root->parse($page);
my $content = $root->look_down(
"id", "bottom_spacing2"
);
my $dump = HTML::Element->new('pre');
$dump->push_content(Dumper $result);
$content->insert_element($dump);
$page = $root->as_HTML;
} else {
$root->parse($self->page_root);
my $text_field = $root->look_down(
"name", "q"
);
$text_field->attr( value => $query );
$page = $root->as_HTML;
$page =~ s/<\/body>/<script type="text\/javascript">seterr('Sorry, no hit for your plugins')<\/script><\/body>/;
}
}
$response->content_type('text/html');
$body = $page;
} elsif ($request->param('u') && $path_parts[0] eq 'iu') {
my $res = $self->ua->request(HTTP::Request->new(GET => "http://duckduckgo.com".$request->request_uri));
if ($res->is_success) {
$body = $res->decoded_content;
$response->code($res->code);
$response->content_type($res->content_type);
} else {
warn $res->status_line, "\n";
$body = "";
}
} else {
$response->content_type('text/html');
$body = $self->page_root;
}
Encode::_utf8_off($body);
$response->body($body);
return $response;
}
1;