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RT2272: Add old-style hash to c_rehash
In addition to Matthias's change, I also added -n to not remove links. And updated the manpage. Reviewed-by: Tim Hudson <tjh@openssl.org>
This commit is contained in:
Matthias Andree
Rich Salz
parent
6452a139fe
commit
a787c2590e
@ -10,6 +10,10 @@ c_rehash - Create symbolic links to files named by the hash values
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=head1 SYNOPSIS
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B<c_rehash>
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B<[-old]>
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B<[-h]>
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B<[-n]>
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B<[-v]>
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[ I<directory>...]
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=head1 DESCRIPTION
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@ -18,6 +22,7 @@ B<c_rehash> scans directories and calculates a hash value of each
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C<.pem>, C<.crt>, C<.cer>, or C<.crl>
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file in the specified directory list and creates symbolic links
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for each file, where the name of the link is the hash value.
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(If the platform does not support symbolic links, a copy is made.)
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This utility is useful as many programs that use OpenSSL require
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directories to be set up like this in order to find certificates.
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@ -35,6 +40,7 @@ is a hexadecimal character and B<D> is a single decimal digit.
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When processing a directory, B<c_rehash> will first remove all links
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that have a name in that syntax. If you have links in that format
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used for other purposes, they will be removed.
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To skip the removal step, use the B<-n> flag.
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Hashes for CRL's look similar except the letter B<r> appears after
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the period, like this: C<HHHHHHHH.rD>.
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@ -52,13 +58,39 @@ B<OPENSSL> environment variable to the full pathname.
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Any program can be used, it will be invoked as follows for either
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a certificate or CRL:
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$OPENSSL x509 -hash -fingerprint -noout -in FFFFFF
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$OPENSSL crl -hash -fingerprint -noout -in FFFFFF
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$OPENSSL x509 -hash -fingerprint -noout -in FILENAME
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$OPENSSL crl -hash -fingerprint -noout -in FILENAME
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where B<FFFFFF> is the filename. It must output the hash of the
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where B<FILENAME> is the filename. It must output the hash of the
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file on the first line, and the fingerprint on the second,
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optionally prefixed with some text and an equals sign.
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=head1 OPTIONS
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=over 4
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=item B<-old>
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Use old-style hashing (MD5, as opposed to SHA-1) for generating
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links for releases before 1.0.0. Note that current versions will
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not use the old style.
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=item B<-h>
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Display a brief usage message.
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=item B<-n>
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Do not remove existing links.
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This is needed when keeping new and old-style links in the same directory.
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=item B<-v>
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Print messages about old links removed and new links created.
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By default, B<c_rehash> only lists each directory as it is processed.
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=back
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=head1 ENVIRONMENT
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=over
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@ -1,31 +1,58 @@
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#!/usr/local/bin/perl
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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 $openssl;
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my $dir;
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my $prefix;
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if(defined $ENV{OPENSSL}) {
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$openssl = $ENV{OPENSSL};
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} else {
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$openssl = "openssl";
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$ENV{OPENSSL} = $openssl;
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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 ( $flag =~ /-old/) {
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$x509hash = "-subject_hash_old";
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$crlhash = "-hash_old";
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} elsif ( $flag =~ /-h/) {
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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 -help.\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] [-v] [dirs...]\n";
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print " -old use old-style digest\n";
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print " -h 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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my $pwd;
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eval "require Cwd";
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if (defined(&Cwd::getcwd)) {
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$pwd=Cwd::getcwd();
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} else {
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$pwd=`pwd`; chomp($pwd);
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$pwd=`pwd`;
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chomp($pwd);
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}
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my $path_delim = ($pwd =~ /^[a-z]\:/i) ? ';' : ':'; # DOS/Win32 or Unix delimiter?
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$ENV{PATH} = "$prefix/bin" . ($ENV{PATH} ? $path_delim . $ENV{PATH} : ""); # prefix our path
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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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@ -66,16 +93,19 @@ sub hash_dir {
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my %hashlist;
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print "Doing $_[0]\n";
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chdir $_[0];
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opendir(DIR, ".");
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my @flist = readdir(DIR);
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# Delete any existing symbolic links
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foreach (grep {/^[\da-f]+\.r{0,1}\d+$/} @flist) {
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if(-l $_) {
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unlink $_;
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if ( $removelinks ) {
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opendir(DIR, ".");
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my @flist = readdir(DIR);
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closedir DIR;
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# Delete any existing symbolic links
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foreach (grep {/^[\da-f]+\.r{0,1}\d+$/} @flist) {
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if(-l $_) {
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unlink $_;
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print "unlink $_" if $verbose;
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}
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}
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}
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closedir DIR;
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FILE: foreach $fname (grep {/\.(pem|crt|cer|crl)$/} @flist) {
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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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@ -117,7 +147,7 @@ sub check_file {
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sub link_hash_cert {
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my $fname = $_[0];
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$fname =~ s/'/'\\''/g;
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my ($hash, $fprint) = `"$openssl" x509 -hash -fingerprint -noout -in "$fname"`;
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my ($hash, $fprint) = `"$openssl" x509 $x509hash -fingerprint -noout -in "$fname"`;
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chomp $hash;
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chomp $fprint;
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$fprint =~ s/^.*=//;
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@ -133,16 +163,16 @@ sub link_hash_cert {
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$suffix++;
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}
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$hash .= ".$suffix";
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print "$fname => $hash\n";
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$symlink_exists=eval {symlink("",""); 1};
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if ($symlink_exists) {
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symlink $fname, $hash;
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print "link $fname -> $hash\n" if $verbose;
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} else {
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open IN,"<$fname" or die "can't open $fname for read";
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open OUT,">$hash" or die "can't open $hash for write";
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print OUT <IN>; # does the job for small text files
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close OUT;
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close IN;
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print "copy $fname -> $hash\n" if $verbose;
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}
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$hashlist{$hash} = $fprint;
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}
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@ -152,7 +182,7 @@ sub link_hash_cert {
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sub link_hash_crl {
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my $fname = $_[0];
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$fname =~ s/'/'\\''/g;
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my ($hash, $fprint) = `"$openssl" crl -hash -fingerprint -noout -in '$fname'`;
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my ($hash, $fprint) = `"$openssl" crl $crlhash -fingerprint -noout -in '$fname'`;
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chomp $hash;
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chomp $fprint;
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$fprint =~ s/^.*=//;
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@ -168,12 +198,12 @@ sub link_hash_crl {
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$suffix++;
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}
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$hash .= ".r$suffix";
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print "$fname => $hash\n";
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$symlink_exists=eval {symlink("",""); 1};
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if ($symlink_exists) {
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symlink $fname, $hash;
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print "link $fname -> $hash\n" if $verbose;
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} else {
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system ("cp", $fname, $hash);
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print "cp $fname -> $hash\n" if $verbose;
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}
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$hashlist{$hash} = $fprint;
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}
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