tools/c_rehash.in - third_party/openssl - Git at Google

 #!{- $config{HASHBANGPERL} -}
 {- use OpenSSL::Util; -}
 # {- join("\n# ", @autowarntext) -}
 # Copyright 1999-2022 The OpenSSL Project Authors. All Rights Reserved.
 #
 # Licensed under the Apache License 2.0 (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 $dir = {- quotify1($config{openssldir}) -};
 my $prefix = {- quotify1($config{prefix}) -};

 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);
 }

 sub compute_hash {
     my $fh;
     if ( $^O eq "VMS" ) {
         # VMS uses the open through shell
         # The file names are safe there and list form is unsupported
         if (!open($fh, "-|", join(' ', @_))) {
             print STDERR "Cannot compute hash on '$fname'\n";
             return;
         }
     } else {
         if (!open($fh, "-|", @_)) {
             print STDERR "Cannot compute hash on '$fname'\n";
             return;
         }
     }
     return (<$fh>, <$fh>);
 }

 # 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 = $_[0];
     my ($hash, $fprint) = compute_hash($openssl, "x509", $x509hash,
                                        "-fingerprint", "-noout",
                                        "-in", $fname);
     chomp $hash;
     chomp $fprint;
     return if !$hash;
     $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 = $_[0];
     my ($hash, $fprint) = compute_hash($openssl, "crl", $crlhash,
                                        "-fingerprint", "-noout",
                                        "-in", $fname);
     chomp $hash;
     chomp $fprint;
     return if !$hash;
     $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;
 }
	#!{- $config{HASHBANGPERL} -}
	{- use OpenSSL::Util; -}
	# {- join("\n# ", @autowarntext) -}
	# Copyright 1999-2022 The OpenSSL Project Authors. All Rights Reserved.
	#
	# Licensed under the Apache License 2.0 (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 $dir = {- quotify1($config{openssldir}) -};
	my $prefix = {- quotify1($config{prefix}) -};

	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);
	}

	sub compute_hash {
	my $fh;
	if ( $^O eq "VMS" ) {
	# VMS uses the open through shell
	# The file names are safe there and list form is unsupported
	if (!open($fh, "-\|", join(' ', @_))) {
	print STDERR "Cannot compute hash on '$fname'\n";
	return;
	}
	} else {
	if (!open($fh, "-\|", @_)) {
	print STDERR "Cannot compute hash on '$fname'\n";
	return;
	}
	}
	return (<$fh>, <$fh>);
	}

	# 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 = $_[0];
	my ($hash, $fprint) = compute_hash($openssl, "x509", $x509hash,
	"-fingerprint", "-noout",
	"-in", $fname);
	chomp $hash;
	chomp $fprint;
	return if !$hash;
	$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 = $_[0];
	my ($hash, $fprint) = compute_hash($openssl, "crl", $crlhash,
	"-fingerprint", "-noout",
	"-in", $fname);
	chomp $hash;
	chomp $fprint;
	return if !$hash;
	$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;
	}