253 lines
6.9 KiB
Perl
253 lines
6.9 KiB
Perl
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#!/usr/bin/env perl
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# WARNING: do not edit!
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# Generated by makefile from tools\c_rehash.in
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# Copyright 1999-2022 The OpenSSL Project Authors. All Rights Reserved.
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#
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# Licensed under the Apache License 2.0 (the "License"). You may not use
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# this file except in compliance with the License. You can obtain a copy
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# in the file LICENSE in the source distribution or at
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# https://www.openssl.org/source/license.html
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# Perl c_rehash script, scan all files in a directory
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# and add symbolic links to their hash values.
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my $dir = "";
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my $prefix = "";
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my $errorcount = 0;
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my $openssl = $ENV{OPENSSL} || "openssl";
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my $pwd;
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my $x509hash = "-subject_hash";
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my $crlhash = "-hash";
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my $verbose = 0;
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my $symlink_exists=eval {symlink("",""); 1};
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my $removelinks = 1;
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## Parse flags.
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while ( $ARGV[0] =~ /^-/ ) {
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my $flag = shift @ARGV;
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last if ( $flag eq '--');
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if ( $flag eq '-old') {
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$x509hash = "-subject_hash_old";
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$crlhash = "-hash_old";
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} elsif ( $flag eq '-h' || $flag eq '-help' ) {
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help();
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} elsif ( $flag eq '-n' ) {
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$removelinks = 0;
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} elsif ( $flag eq '-v' ) {
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$verbose++;
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}
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else {
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print STDERR "Usage error; try -h.\n";
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exit 1;
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}
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}
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sub help {
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print "Usage: c_rehash [-old] [-h] [-help] [-v] [dirs...]\n";
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print " -old use old-style digest\n";
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print " -h or -help print this help text\n";
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print " -v print files removed and linked\n";
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exit 0;
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}
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eval "require Cwd";
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if (defined(&Cwd::getcwd)) {
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$pwd=Cwd::getcwd();
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} else {
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$pwd=`pwd`;
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chomp($pwd);
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}
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# DOS/Win32 or Unix delimiter? Prefix our installdir, then search.
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my $path_delim = ($pwd =~ /^[a-z]\:/i) ? ';' : ':';
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$ENV{PATH} = "$prefix/bin" . ($ENV{PATH} ? $path_delim . $ENV{PATH} : "");
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if (! -x $openssl) {
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my $found = 0;
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foreach (split /$path_delim/, $ENV{PATH}) {
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if (-x "$_/$openssl") {
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$found = 1;
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$openssl = "$_/$openssl";
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last;
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}
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}
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if ($found == 0) {
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print STDERR "c_rehash: rehashing skipped ('openssl' program not available)\n";
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exit 0;
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}
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}
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if (@ARGV) {
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@dirlist = @ARGV;
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} elsif ($ENV{SSL_CERT_DIR}) {
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@dirlist = split /$path_delim/, $ENV{SSL_CERT_DIR};
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} else {
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$dirlist[0] = "$dir/certs";
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}
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if (-d $dirlist[0]) {
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chdir $dirlist[0];
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$openssl="$pwd/$openssl" if (!-x $openssl);
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chdir $pwd;
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}
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foreach (@dirlist) {
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if (-d $_ ) {
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if ( -w $_) {
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hash_dir($_);
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} else {
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print "Skipping $_, can't write\n";
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$errorcount++;
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}
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}
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}
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exit($errorcount);
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sub copy_file {
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my ($src_fname, $dst_fname) = @_;
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if (open(my $in, "<", $src_fname)) {
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if (open(my $out, ">", $dst_fname)) {
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print $out $_ while (<$in>);
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close $out;
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} else {
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warn "Cannot open $dst_fname for write, $!";
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}
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close $in;
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} else {
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warn "Cannot open $src_fname for read, $!";
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}
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}
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sub hash_dir {
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my $dir = shift;
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my %hashlist;
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print "Doing $dir\n";
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if (!chdir $dir) {
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print STDERR "WARNING: Cannot chdir to '$dir', $!\n";
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return;
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}
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opendir(DIR, ".") || print STDERR "WARNING: Cannot opendir '.', $!\n";
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my @flist = sort readdir(DIR);
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closedir DIR;
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if ( $removelinks ) {
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# Delete any existing symbolic links
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foreach (grep {/^[\da-f]+\.r{0,1}\d+$/} @flist) {
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if (-l $_) {
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print "unlink $_\n" if $verbose;
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unlink $_ || warn "Can't unlink $_, $!\n";
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}
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}
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}
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FILE: foreach $fname (grep {/\.(pem|crt|cer|crl)$/} @flist) {
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# Check to see if certificates and/or CRLs present.
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my ($cert, $crl) = check_file($fname);
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if (!$cert && !$crl) {
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print STDERR "WARNING: $fname does not contain a certificate or CRL: skipping\n";
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next;
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}
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link_hash_cert($fname) if ($cert);
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link_hash_crl($fname) if ($crl);
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}
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chdir $pwd;
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}
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sub check_file {
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my ($is_cert, $is_crl) = (0,0);
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my $fname = $_[0];
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open(my $in, "<", $fname);
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while(<$in>) {
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if (/^-----BEGIN (.*)-----/) {
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my $hdr = $1;
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if ($hdr =~ /^(X509 |TRUSTED |)CERTIFICATE$/) {
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$is_cert = 1;
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last if ($is_crl);
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} elsif ($hdr eq "X509 CRL") {
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$is_crl = 1;
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last if ($is_cert);
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}
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}
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}
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close $in;
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return ($is_cert, $is_crl);
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}
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sub compute_hash {
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my $fh;
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if ( $^O eq "VMS" ) {
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# VMS uses the open through shell
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# The file names are safe there and list form is unsupported
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if (!open($fh, "-|", join(' ', @_))) {
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print STDERR "Cannot compute hash on '$fname'\n";
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return;
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}
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} else {
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if (!open($fh, "-|", @_)) {
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print STDERR "Cannot compute hash on '$fname'\n";
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return;
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}
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}
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return (<$fh>, <$fh>);
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}
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# Link a certificate to its subject name hash value, each hash is of
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# the form <hash>.<n> where n is an integer. If the hash value already exists
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# then we need to up the value of n, unless its a duplicate in which
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# case we skip the link. We check for duplicates by comparing the
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# certificate fingerprints
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sub link_hash_cert {
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link_hash($_[0], 'cert');
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}
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# Same as above except for a CRL. CRL links are of the form <hash>.r<n>
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sub link_hash_crl {
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link_hash($_[0], 'crl');
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}
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sub link_hash {
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my ($fname, $type) = @_;
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my $is_cert = $type eq 'cert';
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my ($hash, $fprint) = compute_hash($openssl,
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$is_cert ? "x509" : "crl",
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$is_cert ? $x509hash : $crlhash,
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"-fingerprint", "-noout",
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"-in", $fname);
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chomp $hash;
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$hash =~ s/^.*=// if !$is_cert;
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chomp $fprint;
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return if !$hash;
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$fprint =~ s/^.*=//;
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$fprint =~ tr/://d;
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my $suffix = 0;
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# Search for an unused hash filename
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my $crlmark = $is_cert ? "" : "r";
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while(exists $hashlist{"$hash.$crlmark$suffix"}) {
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# Hash matches: if fingerprint matches its a duplicate cert
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if ($hashlist{"$hash.$crlmark$suffix"} eq $fprint) {
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my $what = $is_cert ? 'certificate' : 'CRL';
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print STDERR "WARNING: Skipping duplicate $what $fname\n";
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return;
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}
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$suffix++;
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}
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$hash .= ".$crlmark$suffix";
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if ($symlink_exists) {
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print "link $fname -> $hash\n" if $verbose;
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symlink $fname, $hash || warn "Can't symlink, $!";
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} else {
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print "copy $fname -> $hash\n" if $verbose;
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copy_file($fname, $hash);
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}
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$hashlist{$hash} = $fprint;
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}
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