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-rw-r--r--openssl/tools/c_rehash210
1 files changed, 210 insertions, 0 deletions
diff --git a/openssl/tools/c_rehash b/openssl/tools/c_rehash
new file mode 100644
index 0000000..6a27c02
--- /dev/null
+++ b/openssl/tools/c_rehash
@@ -0,0 +1,210 @@
+#!/usr/bin/perl
+
+# Perl c_rehash script, scan all files in a directory
+# and add symbolic links to their hash values.
+
+my $dir = "/usr/local/ssl";
+my $prefix = "/usr/local/ssl";
+
+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') {
+ help();
+ } elsif ( $flag eq '-n' ) {
+ $removelinks = 0;
+ } elsif ( $flag eq '-v' ) {
+ $verbose++;
+ }
+ else {
+ print STDERR "Usage error; try -help.\n";
+ exit 1;
+ }
+}
+
+sub help {
+ print "Usage: c_rehash [-old] [-h] [-v] [dirs...]\n";
+ print " -old use old-style digest\n";
+ print " -h 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 $_ and -w $_) {
+ hash_dir($_);
+ }
+}
+
+sub hash_dir {
+ my %hashlist;
+ print "Doing $_[0]\n";
+ chdir $_[0];
+ opendir(DIR, ".");
+ my @flist = readdir(DIR);
+ closedir DIR;
+ if ( $removelinks ) {
+ # Delete any existing symbolic links
+ foreach (grep {/^[\da-f]+\.r{0,1}\d+$/} @flist) {
+ if(-l $_) {
+ unlink $_;
+ print "unlink $_" if $verbose;
+ }
+ }
+ }
+ 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) {
+ symlink $fname, $hash;
+ print "link $fname -> $hash\n" if $verbose;
+ } else {
+ open IN,"<$fname" or die "can't open $fname for read";
+ open OUT,">$hash" or die "can't open $hash for write";
+ print OUT <IN>; # does the job for small text files
+ close OUT;
+ close IN;
+ print "copy $fname -> $hash\n" if $verbose;
+ }
+ $hashlist{$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) {
+ symlink $fname, $hash;
+ print "link $fname -> $hash\n" if $verbose;
+ } else {
+ system ("cp", $fname, $hash);
+ print "cp $fname -> $hash\n" if $verbose;
+ }
+ $hashlist{$hash} = $fprint;
+}
+