mirror of
https://github.com/freebsd/freebsd-src.git
synced 2024-12-04 16:49:40 +00:00
82 lines
2.6 KiB
Plaintext
82 lines
2.6 KiB
Plaintext
|
=pod
|
||
|
|
||
|
=for comment
|
||
|
Original text by James Westby, contributed under the OpenSSL license.
|
||
|
|
||
|
=head1 NAME
|
||
|
|
||
|
c_rehash - Create symbolic links to files named by the hash values
|
||
|
|
||
|
=head1 SYNOPSIS
|
||
|
|
||
|
B<c_rehash>
|
||
|
[ I<directory>...]
|
||
|
|
||
|
=head1 DESCRIPTION
|
||
|
|
||
|
B<c_rehash> scans directories and calculates a hash value of each C<.pem>
|
||
|
file in the specified directory list and creates symbolic links
|
||
|
for each file, where the name of the link is the hash value.
|
||
|
This utility is useful as many programs that use OpenSSL require
|
||
|
directories to be set up like this in order to find certificates.
|
||
|
|
||
|
If any directories are named on the command line, then those are
|
||
|
processed in turn. If not, then the B<SSL_CERT_DIR> environment variable
|
||
|
is consulted; this shold be a colon-separated list of directories,
|
||
|
like the Unix B<PATH> variable.
|
||
|
If that is not set then the default directory (installation-specific
|
||
|
but often B</usr/local/ssl/certs>) is processed.
|
||
|
|
||
|
In order for a directory to be processed, the user must have write
|
||
|
permissions on that directory, otherwise it will be skipped.
|
||
|
The links created are of the form C<HHHHHHHH.D>, where each B<H>
|
||
|
is a hexadecimal character and B<D> is a single decimal digit.
|
||
|
When processing a directory, B<c_rehash> will first remove all links
|
||
|
that have a name in that syntax. If you have links in that format
|
||
|
used for other purposes, they will be removed.
|
||
|
Hashes for CRL's look similar except the letter B<r> appears after
|
||
|
the period, like this: C<HHHHHHHH.rD>.
|
||
|
|
||
|
Multiple objects may have the same hash; they will be indicated by
|
||
|
incrementing the B<D> value. Duplicates are found by comparing the
|
||
|
full SHA-1 fingerprint. A warning will be displayed if a duplicate
|
||
|
is found.
|
||
|
|
||
|
A warning will also be displayed if there are B<.pem> files that
|
||
|
cannot be parsed as either a certificate or a CRL.
|
||
|
|
||
|
The program uses the B<openssl> program to compute the hashes and
|
||
|
fingerprints. If not found in the user's B<PATH>, then set the
|
||
|
B<OPENSSL> environment variable to the full pathname.
|
||
|
Any program can be used, it will be invoked as follows for either
|
||
|
a certificate or CRL:
|
||
|
|
||
|
$OPENSSL x509 -hash -fingerprint -noout -in FFFFFF
|
||
|
$OPENSSL crl -hash -fingerprint -noout -in FFFFFF
|
||
|
|
||
|
where B<FFFFFF> is the filename. It must output the hash of the
|
||
|
file on the first line, and the fingerprint on the second,
|
||
|
optionally prefixed with some text and an equals sign.
|
||
|
|
||
|
=head1 ENVIRONMENT
|
||
|
|
||
|
=over
|
||
|
|
||
|
=item B<OPENSSL>
|
||
|
|
||
|
The path to an executable to use to generate hashes and
|
||
|
fingerprints (see above).
|
||
|
|
||
|
=item B<SSL_CERT_DIR>
|
||
|
|
||
|
Colon separated list of directories to operate on.
|
||
|
Ignored if directories are listed on the command line.
|
||
|
|
||
|
=back
|
||
|
|
||
|
=head1 SEE ALSO
|
||
|
|
||
|
L<openssl(1)|openssl(1)>,
|
||
|
L<crl(1)|crl(1)>.
|
||
|
L<x509(1)|x509(1)>.
|