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Modify checkhash.pl so it can be run standalone or included as a funtion

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in another perl script.
This commit is contained in:
Dr. Stephen Henson
2005-04-17 12:37:08 +00:00
parent 0e23faec0a
commit 48d0ba4a1e
1 changed files with 167 additions and 131 deletions
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112
util/checkhash.pl
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@@ -1,77 +1,97 @@
#!/usr/local/bin/perl -w
my $change_dir = "";
my $check_program = "sha1/fips_standalone_sha1";
my $package = caller;
my $verbose = 0;
my $badfiles = 0;
my $rebuild = 0;
my $force_rewrite = 0;
my $hash_file = "fipshashes.sha1";
my $recurse = 0;
my @fingerprint_files;
while (@ARGV)
if (!(defined $package))
{
my $arg = $ARGV[0];
my $retval = check_hashes(@ARGV);
exit $retval;
}
1;
sub check_hashes
{
my @args = @_;
my $change_dir = "";
my $check_program = "sha1/fips_standalone_sha1";
my $verbose = 0;
my $badfiles = 0;
my $rebuild = 0;
my $force_rewrite = 0;
my $hash_file = "fipshashes.sha1";
my $recurse = 0;
my @fingerprint_files;
while (@args)
{
my $arg = $args[0];
if ($arg eq "-chdir")
{
shift @ARGV;
$change_dir = shift @ARGV;
shift @args;
$change_dir = shift @args;
}
elsif ($arg eq "-rebuild")
{
shift @ARGV;
shift @args;
$rebuild = 1;
}
elsif ($arg eq "-verbose")
{
shift @ARGV;
shift @args;
$verbose = 1;
}
elsif ($arg eq "-force-rewrite")
{
shift @ARGV;
shift @args;
$force_rewrite = 1;
}
elsif ($arg eq "-hash_file")
{
shift @ARGV;
$hash_file = shift @ARGV;
shift @args;
$hash_file = shift @args;
}
elsif ($arg eq "-recurse")
{
shift @ARGV;
shift @args;
$recurse = 1;
}
elsif ($arg eq "-program_path")
{
shift @ARGV;
$check_program = shift @ARGV;
shift @args;
$check_program = shift @args;
}
else
{
die "Unknown Option $arg";
print STDERR "Unknown Option $arg";
return 1;
}
}
chdir $change_dir if $change_dir ne "";
chdir $change_dir if $change_dir ne "";
if ($recurse)
if ($recurse)
{
@fingerprint_files = ("fingerprint.sha1",
<*/fingerprint.sha1>);
}
else
else
{
push @fingerprint_files, $hash_file;
}
foreach $fp (@fingerprint_files)
foreach $fp (@fingerprint_files)
{
open(IN, "$fp") || die "Can't open file $fp";
if (!open(IN, "$fp"))
{
print STDERR "Can't open file $fp";
return 1;
}
print STDERR "Opening Fingerprint file $fp\n" if $verbose;
my $dir = $fp;
$dir =~ s/[^\/]*$//;
@@ -83,43 +103,49 @@ foreach $fp (@fingerprint_files)
print STDERR "FATAL: Invalid syntax in file $fp\n";
print STDERR "Line:\n$_\n";
fatal_error();
return 1;
}
if (!$rebuild && length($hash) != 40)
{
print STDERR "FATAL: Invalid hash length in $fp for file $file\n";
fatal_error();
return 1;
}
push @hashed_files, "$dir$file";
if (exists $hashes{"$dir$file"})
{
print STDERR "FATAL: Duplicate Hash file $dir$file\n";
fatal_error();
return 1;
}
if (! -r "$dir$file")
{
print STDERR "FATAL: Can't access $dir$file\n";
fatal_error();
return 1;
}
$hashes{"$dir$file"} = $hash;
}
close IN;
}
@checked_hashes = `$check_program @hashed_files`;
@checked_hashes = `$check_program @hashed_files`;
if ($? != 0)
if ($? != 0)
{
print STDERR "Error running hash program $check_program\n";
fatal_error();
return 1;
}
if (@checked_hashes != @hashed_files)
if (@checked_hashes != @hashed_files)
{
print STDERR "FATAL: hash count incorrect\n";
fatal_error();
return 1;
}
foreach (@checked_hashes)
foreach (@checked_hashes)
{
chomp;
if (!(($file, $hash) = /^HMAC-SHA1\((.*)\)\s*=\s*(\w*)$/))
@@ -127,11 +153,13 @@ foreach (@checked_hashes)
print STDERR "FATAL: Invalid syntax in file $fp\n";
print STDERR "Line:\n$_\n";
fatal_error();
return 1;
}
if (length($hash) != 40)
{
print STDERR "FATAL: Invalid hash length for file $file\n";
fatal_error();
return 1;
}
if ($hash ne $hashes{$file})
{
@@ -151,16 +179,21 @@ foreach (@checked_hashes)
}
if ($badfiles && !$rebuild)
if ($badfiles && !$rebuild)
{
print STDERR "FATAL: hash mismatch on $badfiles files\n";
fatal_error();
return 1;
}
if ($badfiles || $force_rewrite)
if ($badfiles || $force_rewrite)
{
print "Updating Hash file $hash_file\n";
open OUT, ">$hash_file" || die "Error rewriting $hash_file";
if (!open(OUT, ">$hash_file"))
{
print STDERR "Error rewriting $hash_file";
return 1;
}
foreach (@hashed_files)
{
print OUT "HMAC-SHA1($_)= $hashes{$_}\n";
@@ -168,14 +201,17 @@ if ($badfiles || $force_rewrite)
close OUT;
}
if (!$badfiles)
if (!$badfiles)
{
print "FIPS hash check successful\n";
}
}
sub fatal_error
{
print STDERR "*** Your source code does not match the FIPS validated source ***\n";
exit 1;
}