#!/usr/bin/perl -w

# wmslashdot.pl v1.3, written by Jeff Meininger
# http://rive.boxybutgood.com/WMHeadlines/ - jeffm@boxybutgood.com
#
# Original concept by Pascal Hofstee...
#    <daeron@shadowmere.student.utwente.nl>
#
# Proxy support based on code provided by Dan Gundlach...
#    <dan@msl.net>
#
# Proper HTTP/1.1 calls by Kjeld Hoyer Mortensen...
#    <khm@daimi.au.dk>
#
# wmslashdot is licensed under the GPL version 2.
# wmslashdot is Copyright (C) 1999 by Jeff Meininger
#
# For setup information, please see the following URL...
#    http://rive.boxybutgood.com/WMHeadlines/
#
# For configuration options, type 'wmslashdot.pl --help'
#    All options are available from the command line.
#
# NO NEED TO EDIT THIS FILE FOR CONFIGURATION PURPOSES!

print "Sorry, this doesn't do anything yet..\n";
exit 0;

require 5.002;
use strict;
use Socket;
use File::Copy;

# TODO:  my ($upkey, $downkey, $enterkey) = ("E", "F", "G");

# TODO:  my @sitenames = ("Slashdot", "Freshmeat", ...);
# TODO:  my @remotes = ("slashdot.org", "freshmeat.net", ...);
# TODO:  my @urls = ("/ultramode.txt", "/whatever.txt", ...);
my $sitename = "Slashdot";
my $scriptname = "slashdot";
my $remote = 'slashdot.org';
my $url = "/ultramode.txt";

my @time = localtime();
my $garble = scalar(localtime);
$garble =~ s/\W//g;
my $randomcrap = rand(900);

my ($iaddr, $paddr, $proto, $line, $menufile, $tmpfile, $newstring, $proxy);

my ($twentyfour, $dayfirst, $proxyflag, $loudflag, $forceupdate) = (0)x5;
my ($showdate, $newflag) = (1)x2;

my ($frontpage, $deathtext, $datestring) = ("")x3;
my $nspath = "netscape";
$menufile = "$ENV{'HOME'}/.$scriptname" . "menu";

my $port = 80;
my $maxlength = 9999;
my $ampmstring = "AM";
my $kick = "\n\n";
my $yearstring = "-" . ($time[5] + 1900);

# get configuration from commandline
my $i;
for ($i = 0; $i < scalar(@ARGV); $i++) {
	if ($ARGV[$i] eq "--help") {
                print "\nlcd$scriptname.pl usage:\n";
                print "[-proxy host port] - enables use over a proxy\n";
                print "[-n] - prevents netscape from opening a new window for each headline\n";
                print "[-frontpage top|bottom] - adds a persistant item for the $sitename frontpage.\n\tIt can be placed at the top or bottom of the menu.\n";
                print "[-loud] - useful for debugging problems.  Otherwise, the script exits quietly\n\tin the case of an error.\n";
                print "[-24] - display time in 24 format instead of 12 AM/PM\n";
                print "[-dayfirst] - display day before month (like 25-12-1999) in date.\n";
                print "[-nodate] - do not display 'last updated' date in menu title.\n";
                print "[-noyear] - do not display the year in the 'last updated' date.\n";
                print "[-proxyfix] - proxy support not working?  Try this.\n";
                print "[-maxlength num] - items will not be shown with more than [num] letters.\n";
                print "[-nspath /path/to/netscape/executable] - if your 'netscape' is not in the PATH\n\tused by Window Maker, you may specify the full pathname to the netscape\n\texecutable here.\n";
                print "[-menufile /etc/X11/WindowMaker/menu.$scriptname] - if you want to store the\n\tmenu somewhere other than ~/.$scriptname" . "menu, specify the FULL\n\tpathname with this option.  (Keep write permissions in mind...)\n";
                print "[-forceupdate] - force the menu file to be written even if the headlines have\n\tnot changed.  For example, a change in preference options will _NOT_\n\tbe visible without using this option.\n";
                print "\n";
                exit();
        } elsif($ARGV[$i] eq "-proxy") {
                if ((!defined($ARGV[$i + 2])) || ($ARGV[$i + 1] =~ /^-/) || ($ARGV[$i + 2] =~ /^-/) || ($ARGV[$i + 2] =~ /\D/)) {
                        print "Please use '-proxy proxy.yourisp.com 3128' or whatever is appropriate.\n";
                        exit();
                } else {
                        $proxyflag = 1;
                        $proxy = $ARGV[$i + 1];
                        $port = $ARGV[$i + 2];
                }
        } elsif($ARGV[$i] eq "-n") {
                $newflag = 0;
        } elsif($ARGV[$i] eq "-frontpage") {
                if ((!defined($ARGV[$i + 1])) || (($ARGV[$i + 1] ne "top") && ($ARGV[$i + 1] ne "bottom"))) {
                        print "Please use '-frontpage top' or '-frontpage bottom' to enable this feature.\n";
                        exit();
                } else {
                        $frontpage = $ARGV[$i + 1];
                }
        } elsif($ARGV[$i] eq "-loud") {
                $deathtext = "ERROR: Could not connect to remote site";
        } elsif($ARGV[$i] eq "-24") {
                $twentyfour = 1;
        } elsif($ARGV[$i] eq "-dayfirst") {
                $dayfirst = 1;
        } elsif($ARGV[$i] eq "-nodate") {
                $showdate = 0;
        } elsif($ARGV[$i] eq "-noyear") {
                $yearstring = "";
        } elsif($ARGV[$i] eq "-proxyfix") {
                $kick = "\r\n\r\n";
        } elsif($ARGV[$i] eq "-maxlength") {
                if ((!defined($ARGV[$i + 1])) || ($ARGV[$i + 1] =~ /\D/)) {
                        print "Please use '-maxlength NUM' where NUM is an integer, like 60.\n";
                        exit();
                } else {
                        $maxlength = $ARGV[$i + 1];
                }
        } elsif($ARGV[$i] eq "-nspath") {
                if (!defined($ARGV[$i + 1]) || ($ARGV[$i + 1] !~ /^\//)) {
                        print "Please use '-nspath /opt/netscape-4.5/netscape', or whatever is appropriate.\nNote... you must specify the FULL pathname.\n";
                        exit();
                }
                $nspath = $ARGV[$i + 1];
        } elsif($ARGV[$i] eq "-menufile") {
                if (!defined($ARGV[$i + 1]) || ($ARGV[$i + 1] !~ /^\//)) {
                        print "Please use '-menufile /etc/X11/WindowMaker/menu.$scriptname', or whatever is\nappropriate.  Note... you must specify the FULL pathname.\n";
                        exit();
                }
                $menufile = $ARGV[$i + 1];
        } elsif($ARGV[$i] eq "-forceupdate") {
                $forceupdate = 1;
        }
}

if ($newflag == 0) {
        $newstring = "";
} else {
        $newstring = ", new-window";
}

if ($twentyfour > 0) {
        $ampmstring = "";
} else {
        if ($time[2] > 11) {
                $ampmstring = "PM";
        }
        
        if ($time[2] > 12) {
                $time[2] = $time[2] - 12;
        }
}

if ($showdate > 0) {
        if ($dayfirst > 0) {
                $datestring = " [$time[3]-" . ($time[4] + 1) . "$yearstring, " . $time[2] . ":" . sprintf("%02d", $time[1]) . "$ampmstring]";
        } else {
                $datestring = " [" . ($time[4] + 1) . "-$time[3]$yearstring, " . $time[2] . ":" . sprintf("%02d", $time[1]) . "$ampmstring]";
        }
} else {
        $datestring = "";
}

# start the fun
$tmpfile = "/tmp/$scriptname" . "menu$garble$randomcrap";
open(TMPFILE, ">$tmpfile");

print TMPFILE "\"$sitename Headlines$datestring\" MENU\n";

if ($frontpage eq "top") {
        print TMPFILE "\"$sitename Frontpage\" EXEC $nspath -remote 'openURL(http://$remote/$newstring)' || $nspath 'http://$remote/'\n";
}

# network connection portion is pretty much stolen from 'man perlipc'
if ($proxyflag > 0) {
        $iaddr = inet_aton($proxy) || wmdie($deathtext);
} else {
        $iaddr = inet_aton($remote) || wmdie($deathtext);
}
$paddr = sockaddr_in($port, $iaddr);
$proto = getprotobyname('tcp');
socket(SOCK, PF_INET, SOCK_STREAM, $proto) || wmdie($deathtext);
connect(SOCK, $paddr) || wmdie($deathtext);

select(SOCK); $| = 1; select(STDOUT);

if ($proxyflag > 0) {
        print SOCK "GET http://$remote$url HTTP/1.1$kick";
} else {
        print SOCK "GET $url HTTP/1.1\nHost: $remote:80$kick";
}


$i = 0;
my $flag = 0;
while (defined($line = <SOCK>)) {
        $i++;
        
        if ($line =~ /^%%/) { $i = 1; $flag = 1; }
        
        if ($flag > 0) {
                if ($i == 2) {
                        chop($line);
                        $line =~ s/"/'/g;  # " Balances out quote...
                        $line =~ s/<.*?>//g;
                        $line =~ s/&.{1,5}?;//g;
                        if (length($line) > $maxlength) {
                                $line = substr($line, 0, $maxlength) . "...";
                        }
                        print TMPFILE "\"$line\" EXEC $nspath -remote 'openURL(";
                } elsif ($i == 3) {
                        chop($line);
                        print TMPFILE "$line$newstring)' || $nspath '$line'\n";
                }
        }
}

if ($frontpage eq "bottom") {
        print TMPFILE "\"$sitename Frontpage\" EXEC $nspath -remote 'openURL(http://$remote/$newstring)' || $nspath 'http://$remote/'\n";
}

print TMPFILE "\"$sitename Headlines$datestring\" END\n";

close(SOCK) || die "Error closing socket: $!";
close(TMPFILE);

# compare tmpfile with current menufile and possibly update it.
if (-e $menufile) {
        my ($tmpline, $menuline, $linecount);
        
        open(MENUFILE, $menufile);
        open(TMPFILE, $tmpfile);
        
        # read in the first 'headline' menu entry from each file.
        if ($frontpage eq "top") {
                $linecount = 3;
        } else {
                $linecount = 2;
        }

        for ($i = 0; $i < $linecount; $i++) {
                if (eof(TMPFILE)) {
                        if ($forceupdate == 0) {
                        
                                close(MENUFILE);
                                close(TMPFILE);
                                unlink($tmpfile);

                                exit();
                        }
                } else {
                        $tmpline = <TMPFILE>;
                }

                unless (eof(MENUFILE)) {
                        $menuline = <MENUFILE>;
                }
        }
        
        if (($forceupdate == 0) && (($tmpline =~ /^"$sitename Headlines/) || ($tmpline =~ /^"$sitename Frontpage/) || ($tmpline eq $menuline))) {
                close(MENUFILE);
                close(TMPFILE);
                unlink($tmpfile);
                
                exit();
        }
}

close(MENUFILE);
close(TMPFILE);
copy($tmpfile, $menufile);
unlink($tmpfile);

exit();

sub wmdie {
	my $string = shift;
	if ($string ne "") {
		print "$string\n";
	}
	
	close(SOCK);
	close(TMPFILE);
	unlink($tmpfile);
	
	if ($string eq "") {
		exit(0);
	} else {
		exit(1);
	}
}