source: main/trunk/greenstone3/bin/windows/openssl/bin/c_rehash.pl@ 32476

#!/usr/bin/env perl

# WARNING: do not edit!
# Generated by makefile from tools\c_rehash.in
# Copyright 1999-2018 The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the OpenSSL license (the "License").  You may not use
# this file except in compliance with the License.  You can obtain a copy
# in the file LICENSE in the source distribution or at
# https://www.openssl.org/source/license.html

# Perl c_rehash script, scan all files in a directory
# and add symbolic links to their hash values.

my $dir = "C:\\Users\\Anupama\\OpenSSL\\Build-VC-32-release_1-1-1\\SSL";
my $prefix = "C:\\Users\\Anupama\\OpenSSL\\Build-VC-32-release_1-1-1";

my $errorcount = 0;
my $openssl = $ENV{OPENSSL} || "openssl";
my $pwd;
my $x509hash = "-subject_hash";
my $crlhash = "-hash";
my $verbose = 0;
my $symlink_exists=eval {symlink("",""); 1};
my $removelinks = 1;

##  Parse flags.
while ( $ARGV[0] =~ /^-/ ) {
    my $flag = shift @ARGV;
    last if ( $flag eq '--');
    if ( $flag eq '-old') {
        $x509hash = "-subject_hash_old";
        $crlhash = "-hash_old";
    } elsif ( $flag eq '-h' || $flag eq '-help' ) {
        help();
    } elsif ( $flag eq '-n' ) {
        $removelinks = 0;
    } elsif ( $flag eq '-v' ) {
        $verbose++;
    }
    else {
        print STDERR "Usage error; try -h.\n";
        exit 1;
    }
}

sub help {
    print "Usage: c_rehash [-old] [-h] [-help] [-v] [dirs...]\n";
    print "   -old use old-style digest\n";
    print "   -h or -help print this help text\n";
    print "   -v print files removed and linked\n";
    exit 0;
}

eval "require Cwd";
if (defined(&Cwd::getcwd)) {
    $pwd=Cwd::getcwd();
} else {
    $pwd=`pwd`;
    chomp($pwd);
}

# DOS/Win32 or Unix delimiter?  Prefix our installdir, then search.
my $path_delim = ($pwd =~ /^[a-z]\:/i) ? ';' : ':';
$ENV{PATH} = "$prefix/bin" . ($ENV{PATH} ? $path_delim . $ENV{PATH} : "");

if (! -x $openssl) {
    my $found = 0;
    foreach (split /$path_delim/, $ENV{PATH}) {
        if (-x "$_/$openssl") {
            $found = 1;
            $openssl = "$_/$openssl";
            last;
        }   
    }
    if ($found == 0) {
        print STDERR "c_rehash: rehashing skipped ('openssl' program not available)\n";
        exit 0;
    }
}

if (@ARGV) {
    @dirlist = @ARGV;
} elsif ($ENV{SSL_CERT_DIR}) {
    @dirlist = split /$path_delim/, $ENV{SSL_CERT_DIR};
} else {
    $dirlist[0] = "$dir/certs";
}

if (-d $dirlist[0]) {
    chdir $dirlist[0];
    $openssl="$pwd/$openssl" if (!-x $openssl);
    chdir $pwd;
}

foreach (@dirlist) {
    if (-d $_ ) {
            if ( -w $_) {
        hash_dir($_);
            } else {
                print "Skipping $_, can't write\n";
                $errorcount++;
            }
    }
}
exit($errorcount);

sub hash_dir {
    my %hashlist;
    print "Doing $_[0]\n";
    chdir $_[0];
    opendir(DIR, ".");
    my @flist = sort readdir(DIR);
    closedir DIR;
    if ( $removelinks ) {
        # Delete any existing symbolic links
        foreach (grep {/^[\da-f]+\.r{0,1}\d+$/} @flist) {
            if (-l $_) {
                print "unlink $_" if $verbose;
                unlink $_ || warn "Can't unlink $_, $!\n";
            }
        }
    }
    FILE: foreach $fname (grep {/\.(pem)|(crt)|(cer)|(crl)$/} @flist) {
        # Check to see if certificates and/or CRLs present.
        my ($cert, $crl) = check_file($fname);
        if (!$cert && !$crl) {
            print STDERR "WARNING: $fname does not contain a certificate or CRL: skipping\n";
            next;
        }
        link_hash_cert($fname) if ($cert);
        link_hash_crl($fname) if ($crl);
    }
}

sub check_file {
    my ($is_cert, $is_crl) = (0,0);
    my $fname = $_[0];
    open IN, $fname;
    while(<IN>) {
        if (/^-----BEGIN (.*)-----/) {
            my $hdr = $1;
            if ($hdr =~ /^(X509 |TRUSTED |)CERTIFICATE$/) {
                $is_cert = 1;
                last if ($is_crl);
            } elsif ($hdr eq "X509 CRL") {
                $is_crl = 1;
                last if ($is_cert);
            }
        }
    }
    close IN;
    return ($is_cert, $is_crl);
}


# Link a certificate to its subject name hash value, each hash is of
# the form <hash>.<n> where n is an integer. If the hash value already exists
# then we need to up the value of n, unless its a duplicate in which
# case we skip the link. We check for duplicates by comparing the
# certificate fingerprints

sub link_hash_cert {
        my $fname = $_[0];
        $fname =~ s/'/'\\''/g;
        my ($hash, $fprint) = `"$openssl" x509 $x509hash -fingerprint -noout -in "$fname"`;
        chomp $hash;
        chomp $fprint;
        $fprint =~ s/^.*=//;
        $fprint =~ tr/://d;
        my $suffix = 0;
        # Search for an unused hash filename
        while(exists $hashlist{"$hash.$suffix"}) {
            # Hash matches: if fingerprint matches its a duplicate cert
            if ($hashlist{"$hash.$suffix"} eq $fprint) {
                print STDERR "WARNING: Skipping duplicate certificate $fname\n";
                return;
            }
            $suffix++;
        }
        $hash .= ".$suffix";
        if ($symlink_exists) {
            print "link $fname -> $hash\n" if $verbose;
            symlink $fname, $hash || warn "Can't symlink, $!";
        } else {
            print "copy $fname -> $hash\n" if $verbose;
                        if (open($in, "<", $fname)) {
                            if (open($out,">", $hash)) {
                                print $out $_ while (<$in>);
                                close $out;
                            } else {
                                warn "can't open $hash for write, $!";
                            }
                            close $in;
                        } else {
                            warn "can't open $fname for read, $!";
                        }
        }
        $hashlist{$hash} = $fprint;
}

# Same as above except for a CRL. CRL links are of the form <hash>.r<n>

sub link_hash_crl {
        my $fname = $_[0];
        $fname =~ s/'/'\\''/g;
        my ($hash, $fprint) = `"$openssl" crl $crlhash -fingerprint -noout -in '$fname'`;
        chomp $hash;
        chomp $fprint;
        $fprint =~ s/^.*=//;
        $fprint =~ tr/://d;
        my $suffix = 0;
        # Search for an unused hash filename
        while(exists $hashlist{"$hash.r$suffix"}) {
            # Hash matches: if fingerprint matches its a duplicate cert
            if ($hashlist{"$hash.r$suffix"} eq $fprint) {
                print STDERR "WARNING: Skipping duplicate CRL $fname\n";
                return;
            }
            $suffix++;
        }
        $hash .= ".r$suffix";
        if ($symlink_exists) {
            print "link $fname -> $hash\n" if $verbose;
            symlink $fname, $hash || warn "Can't symlink, $!";
        } else {
            print "cp $fname -> $hash\n" if $verbose;
            system ("cp", $fname, $hash);
                        warn "Can't copy, $!" if ($? >> 8) != 0;
        }
        $hashlist{$hash} = $fprint;
}