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#!/usr/bin/perl
#
# fixprogs - run through the list of entropy commands and
# score out the losers
#
$entscale = 50; # divisor for optional entropy measurement
sub usage {
return("Usage: $0 <command file>\n");
}
if (($#ARGV == -1) || ($#ARGV>1)) {
die(&usage);
}
# 'undocumented' option - run ent (in second param) on the output
if ($#ARGV==1) {
$entcmd=$ARGV[1]
} else {
$entcmd = ""
};
$infilename = $ARGV[0];
if (!open(IN, "<".$infilename)) {
die("Couldn't open input file");
}
$outfilename=$infilename.".out";
if (!open(OUT, ">$outfilename")) {
die("Couldn't open output file $outfilename");
}
@infile=<IN>;
select(OUT); $|=1; select(STDOUT);
foreach (@infile) {
if (/^\s*\#/ || /^\s*$/) {
print OUT;
next;
}
($cmd, $path, $est) = /^\"([^\"]+)\"\s+([\w\/_-]+)\s+([\d\.\-]+)/o;
@args = split(/ /, $cmd);
if (! ($pid = fork())) {
# child
close STDIN; close STDOUT; close STDERR;
open (STDIN, "</dev/null");
open (STDOUT, ">/dev/null");
open (STDERR, ">/dev/null");
exec $path @args;
exit 1; # shouldn't be here
}
# parent
waitpid ($pid, 0); $ret=$? >> 8;
if ($ret != 0) {
$path = "undef";
} else {
if ($entcmd ne "") {
# now try to run ent on the command
$mostargs=join(" ", splice(@args,1));
print "Evaluating '$path $mostargs'\n";
@ent = qx{$path $mostargs | $entcmd -b -t};
@ent = grep(/^1,/, @ent);
($null, $null, $rate) = split(/,/, $ent[0]);
$est = $rate / $entscale; # scale the estimate back
}
}
print OUT "\"$cmd\" $path $est\n";
}
close(IN);
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