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#!/usr/local/bin/perl
#----------------------------------------------------------------------
#variables you should change, note that archie server is set dynamically below:
@archies = ("archie.unl.edu",
"archie.sura.net",
"archie.rutgers.edu",
"archie.rediris.es"
);
$archie_prog = "/usr/local/bin/archie";
$ftp_gateway = "gopher-gw.micro.umn.edu";
$ftp_port = 70;
@hqx_types = ('.hqx');
@sound_types = ('.snd', '.au');
@image_types = ('.gif', '.tiff', '.pcx', '.jpg');
@movie_types = ('.mov', '.mpg');
@html_types = ('.htm','.html');
@binary_types = ('.exe', '.tar.Z', '.zip', '.zoo', '.arj', '.arc',
'.lzh', '.hyp', '.pak', '.exe', '.com');
#----------------------------------------------------------------------
# gateway from gopher to archie
# this is the "brute force" kind of approach; a tidier solution
# would speak the prospero protocols directly.
$SIG{'INT'} = 'Ourabort';
$SIG{'TERM'} = 'Ourabort';
$SIG{'HUP'} = 'Ourabort';
$SIG{'QUIT'} = 'Ourabort';
$SIG{'PIPE'} = 'Ourabort';
$SIG{'ALRM'} = 'Ourabort';
if ($0 =~ /.gpd/) {
# We have gopher+ directory...
$gplus = 1;
}
$| = 1;
#
# Default values for gopher0 clients...
#
$qtype = "Exact";
$maxhits = 100;
if (defined(@ARGV)) {
($query, $maxhits, $qtype) = join(' ', @ARGV);
} else {
$query = <>; chop($query);
$qtype = <>; chop($qtype);
$maxhits = <>; chop($maxhits);
}
$arg = '-s' if ($qtype eq 'Substring');
$arg = '-e' if ($qtype eq 'Exact');
$arg = '-r' if ($qtype eq 'Regular Expression');
$numhits = "-m $numhits" if ($numhits =~ /^\d+$/);
$query =~ s/([^A-Za-z0-9])/\\$1/g;
exit if (length($query) <1);
print "+INFO: " if ($gplus);
print "iStarting Archie Search, patience.....\t\t\t70\n";
#
$archie_server = &find_fastest_server(@archies);
print "+INFO: " if ($gplus);
print "iSearching Archie server at $archie_server\t\t\t70\n";
$archcmd = "$archie_prog -l -t $arg $numhits -h $archie_server $query";
$pid = open(archfd, "$archcmd|") || die "Could not execute $archcmd...\n";
select(archfd);
$| = 1;
select(STDOUT);
while (<archfd>) {
($time, $size, $host, $file) = split;;
$type = 0; # assume text.
$type = "1" if ($file =~ m./$.) ;
foreach $i (@binary_types) {
$type = "9" if ($file =~ /$i$/i);
}
foreach $i (@image_types) {
$type = "I" if ($file =~ /$i$/i);
}
foreach $i (@movie_types) {
$type = ":" if ($file =~ /$i$/i);
}
foreach $i (@sound_types) {
$type = "s" if ($file =~ /$i$/i);
}
foreach $i (@hqx_types) {
$type = "4" if ($file =~ /$i$/i);
}
foreach $i (@html_types) {
$type = "h" if ($file =~ /$i$/i);
}
print "+INFO: " if ($gplus);
print "$type$host:$file\tftp:$host@$file\t$ftp_gateway\t$ftp_port\n";
if ($gplus) {
print "+URL:\n";
print " ftp://$host$file\n";
}
}
#
# This routine tries to find the least loaded Archie server
# based on Richard Perlman code from Pacific Bell
#
sub find_fastest_server {
local(@sites) = @_;
$ServerMinLoad = 9999999;
open(moo, "/usr/ucb/rup @sites|");
while (<moo>) {
m/^[ \t]*([^: \t]+).*load average: ([0-9\.^ ]*)/;
$abbrevsite = $1 ;
$itsload=$2;
foreach $i (@sites) {
if ($abbrevsite eq substr($i,0,12)) {
$fullsite=$i;
}
}
$possible_load{"$fullsite"} = $itsload;
if ($itsload < $ServerMinLoad) {
$ServerMinLoad = $itsload;
$ServerMinHost = $fullsite;
}
}
return ($ServerMinHost);
}
sub Ourabort {
kill(SIGINT, $pid);
kill(SIGKILL, $pid);
exit(0);
}
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