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File Content: file.pm

package LWP::Protocol::file;

use base qw(LWP::Protocol);

use strict;

our $VERSION = '6.34';

require LWP::MediaTypes;
require HTTP::Request;
require HTTP::Response;
require HTTP::Status;
require HTTP::Date;

sub request
{
    my($self, $request, $proxy, $arg, $size) = @_;

$size = 4096 unless defined $size and $size > 0;

# check proxy
    if (defined $proxy)
    {
	return HTTP::Response->new( HTTP::Status::RC_BAD_REQUEST,
				  'You can not proxy through the filesystem');
    }

# check method
    my $method = $request->method;
    unless ($method eq 'GET' || $method eq 'HEAD') {
	return HTTP::Response->new( HTTP::Status::RC_BAD_REQUEST,
				  'Library does not allow method ' .
				  "$method for 'file:' URLs");
    }

# check url
    my $url = $request->uri;

my $scheme = $url->scheme;
    if ($scheme ne 'file') {
	return HTTP::Response->new( HTTP::Status::RC_INTERNAL_SERVER_ERROR,
			   "LWP::Protocol::file::request called for '$scheme'");
    }

# URL OK, look at file
    my $path  = $url->file;

# test file exists and is readable
    unless (-e $path) {
	return HTTP::Response->new( HTTP::Status::RC_NOT_FOUND,
				  "File `$path' does not exist");
    }
    unless (-r _) {
	return HTTP::Response->new( HTTP::Status::RC_FORBIDDEN,
				  'User does not have read permission');
    }

# looks like file exists
    my($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$filesize,
       $atime,$mtime,$ctime,$blksize,$blocks)
	    = stat(_);

# XXX should check Accept headers?

# check if-modified-since
    my $ims = $request->header('If-Modified-Since');
    if (defined $ims) {
	my $time = HTTP::Date::str2time($ims);
	if (defined $time and $time >= $mtime) {
	    return HTTP::Response->new( HTTP::Status::RC_NOT_MODIFIED,
				      "$method $path");
	}
    }

# Ok, should be an OK response by now...
    my $response = HTTP::Response->new( HTTP::Status::RC_OK );

# fill in response headers
    $response->header('Last-Modified', HTTP::Date::time2str($mtime));

if (-d _) {         # If the path is a directory, process it
	# generate the HTML for directory
	opendir(D, $path) or
	   return HTTP::Response->new( HTTP::Status::RC_INTERNAL_SERVER_ERROR,
				     "Cannot read directory '$path': $!");
	my(@files) = sort readdir(D);
	closedir(D);

# Make directory listing
	require URI::Escape;
	require HTML::Entities;
        my $pathe = $path . ( $^O eq 'MacOS' ? ':' : '/');
	for (@files) {
	    my $furl = URI::Escape::uri_escape($_);
            if ( -d "$pathe$_" ) {
                $furl .= '/';
                $_ .= '/';
            }
	    my $desc = HTML::Entities::encode($_);
	    $_ = qq{<LI><A HREF="$furl">$desc</A>};
	}
	# Ensure that the base URL is "/" terminated
	my $base = $url->clone;
	unless ($base->path =~ m|/$|) {
	    $base->path($base->path . "/");
	}
	my $html = join("\n",
			"<HTML>\n<HEAD>",
			"<TITLE>Directory $path</TITLE>",
			"<BASE HREF=\"$base\">",
			"</HEAD>\n<BODY>",
			"<H1>Directory listing of $path</H1>",
			"<UL>", @files, "</UL>",
			"</BODY>\n</HTML>\n");

$response->header('Content-Type',   'text/html');
	$response->header('Content-Length', length $html);
	$html = "" if $method eq "HEAD";

return $self->collect_once($arg, $response, $html);

}

# path is a regular file
    $response->header('Content-Length', $filesize);
    LWP::MediaTypes::guess_media_type($path, $response);

# read the file
    if ($method ne "HEAD") {
	open(my $fh, '<', $path) or return new
	    HTTP::Response(HTTP::Status::RC_INTERNAL_SERVER_ERROR,
			   "Cannot read file '$path': $!");
	binmode($fh);
	$response =  $self->collect($arg, $response, sub {
	    my $content = "";
	    my $bytes = sysread($fh, $content, $size);
	    return \$content if $bytes > 0;
	    return \ "";
	});
	close($fh);
    }

$response;
}

Name	Size	Permission
cpan.pm	1361 bytes	0644
data.pm	1233 bytes	0644
file.pm	3843 bytes	0644
ftp.pm	19140 bytes	0644
gopher.pm	5728 bytes	0644
http.pm	15111 bytes	0644
loopback.pm	586 bytes	0644
mailto.pm	4406 bytes	0644
nntp.pm	4196 bytes	0644
nogo.pm	610 bytes	0644