free NULL cleanup.

[openssl.git] / doc / crypto / X509_VERIFY_PARAM_set_flags.pod

diff --git a/doc/crypto/X509_VERIFY_PARAM_set_flags.pod b/doc/crypto/X509_VERIFY_PARAM_set_flags.pod
index 46cac2bea2beaa83542a5c4b0261dade5f28e6eb..d19dc1218c6e03841051c4afb52050697f5b937b 100644 (file)
--- a/doc/crypto/X509_VERIFY_PARAM_set_flags.pod
+++ b/doc/crypto/X509_VERIFY_PARAM_set_flags.pod
@@ -2,7 +2,7 @@
 
 =head1 NAME
 
 
 =head1 NAME
 

-X509_VERIFY_PARAM_set_flags, X509_VERIFY_PARAM_clear_flags, X509_VERIFY_PARAM_get_flags, X509_VERIFY_PARAM_set_purpose, X509_VERIFY_PARAM_set_trust, X509_VERIFY_PARAM_set_depth, X509_VERIFY_PARAM_get_depth, X509_VERIFY_PARAM_set_time, X509_VERIFY_PARAM_add0_policy, X509_VERIFY_PARAM_set1_policies - X509 verification parameters 
+X509_VERIFY_PARAM_set_flags, X509_VERIFY_PARAM_clear_flags, X509_VERIFY_PARAM_get_flags, X509_VERIFY_PARAM_set_purpose, X509_VERIFY_PARAM_set_trust, X509_VERIFY_PARAM_set_depth, X509_VERIFY_PARAM_get_depth, X509_VERIFY_PARAM_set_time, X509_VERIFY_PARAM_add0_policy, X509_VERIFY_PARAM_set1_policies, X509_VERIFY_PARAM_set1_host, X509_VERIFY_PARAM_add1_host, X509_VERIFY_PARAM_set_hostflags, X509_VERIFY_PARAM_get0_peername, X509_VERIFY_PARAM_set1_email, X509_VERIFY_PARAM_set1_ip, X509_VERIFY_PARAM_set1_ip_asc - X509 verification parameters

 
 =head1 SYNOPSIS
 
 
 =head1 SYNOPSIS
 


@@ -26,6 +26,19 @@ X509_VERIFY_PARAM_set_flags, X509_VERIFY_PARAM_clear_flags, X509_VERIFY_PARAM_ge
  void X509_VERIFY_PARAM_set_depth(X509_VERIFY_PARAM *param, int depth);
  int X509_VERIFY_PARAM_get_depth(const X509_VERIFY_PARAM *param);
 
  void X509_VERIFY_PARAM_set_depth(X509_VERIFY_PARAM *param, int depth);
  int X509_VERIFY_PARAM_get_depth(const X509_VERIFY_PARAM *param);
 

+ int X509_VERIFY_PARAM_set1_host(X509_VERIFY_PARAM *param,
+                                const char *name, size_t namelen);
+ int X509_VERIFY_PARAM_add1_host(X509_VERIFY_PARAM *param,
+                                 const char *name, size_t namelen);
+ void X509_VERIFY_PARAM_set_hostflags(X509_VERIFY_PARAM *param,
+                                     unsigned int flags);
+ char *X509_VERIFY_PARAM_get0_peername(X509_VERIFY_PARAM *param);
+ int X509_VERIFY_PARAM_set1_email(X509_VERIFY_PARAM *param,
+                                const char *email, size_t emaillen);
+ int X509_VERIFY_PARAM_set1_ip(X509_VERIFY_PARAM *param,
+                              const unsigned char *ip, size_t iplen);
+ int X509_VERIFY_PARAM_set1_ip_asc(X509_VERIFY_PARAM *param, const char *ipasc);
+

 =head1 DESCRIPTION
 
 These functions manipulate the B<X509_VERIFY_PARAM> structure associated with
 =head1 DESCRIPTION
 
 These functions manipulate the B<X509_VERIFY_PARAM> structure associated with


@@ -61,12 +74,63 @@ X509_VERIFY_PARAM_set_depth() sets the maximum verification depth to B<depth>.
 That is the maximum number of untrusted CA certificates that can appear in a
 chain.
 
 That is the maximum number of untrusted CA certificates that can appear in a
 chain.
 

+X509_VERIFY_PARAM_set1_host() sets the expected DNS hostname to
+B<name> clearing any previously specified host name or names.  If
+B<name> is NULL, or empty the list of hostnames is cleared, and
+name checks are not performed on the peer certificate.  If B<name>
+is NUL-terminated, B<namelen> may be zero, otherwise B<namelen>
+must be set to the length of B<name>.  When a hostname is specified,
+certificate verification automatically invokes L<X509_check_host(3)>
+with flags equal to the B<flags> argument given to
+B<X509_VERIFY_PARAM_set_hostflags()> (default zero).  Applications
+are strongly advised to use this interface in preference to explicitly
+calling L<X509_check_host(3)>, hostname checks are out of scope
+with the DANE-EE(3) certificate usage, and the internal check will
+be suppressed as appropriate when DANE support is added to OpenSSL.
+
+X509_VERIFY_PARAM_add1_host() adds B<name> as an additional reference
+identifer that can match the peer's certificate.  Any previous names
+set via X509_VERIFY_PARAM_set1_host() or X509_VERIFY_PARAM_add1_host()
+are retained, no change is made if B<name> is NULL or empty.  When
+multiple names are configured, the peer is considered verified when
+any name matches.
+
+X509_VERIFY_PARAM_get0_peername() returns the DNS hostname or subject
+CommonName from the peer certificate that matched one of the reference
+identifiers.  When wildcard matching is not disabled, or when a
+reference identifier specifies a parent domain (starts with ".")
+rather than a hostname, the peer name may be a wildcard name or a
+sub-domain of the reference identifier respectively.  The return
+string is allocated by the library and is no longer valid once the
+associated B<param> argument is freed.  Applications must not free
+the return value.
+
+X509_VERIFY_PARAM_set1_email() sets the expected RFC822 email address to
+B<email>.  If B<email> is NUL-terminated, B<emaillen> may be zero, otherwise
+B<emaillen> must be set to the length of B<email>.  When an email address
+is specified, certificate verification automatically invokes
+L<X509_check_email(3)>.
+
+X509_VERIFY_PARAM_set1_ip() sets the expected IP address to B<ip>.
+The B<ip> argument is in binary format, in network byte-order and
+B<iplen> must be set to 4 for IPv4 and 16 for IPv6.  When an IP
+address is specified, certificate verification automatically invokes
+L<X509_check_ip(3)>.
+
+X509_VERIFY_PARAM_set1_ip_asc() sets the expected IP address to
+B<ipasc>.  The B<ipasc> argument is a NUL-terminal ASCII string:
+dotted decimal quad for IPv4 and colon-separated hexadecimal for
+IPv6.  The condensed "::" notation is supported for IPv6 addresses.
+

 =head1 RETURN VALUES
 
 =head1 RETURN VALUES
 

-X509_VERIFY_PARAM_set_flags(), X509_VERIFY_PARAM_clear_flags(), 
+X509_VERIFY_PARAM_set_flags(), X509_VERIFY_PARAM_clear_flags(),

 X509_VERIFY_PARAM_set_purpose(), X509_VERIFY_PARAM_set_trust(),
 X509_VERIFY_PARAM_set_purpose(), X509_VERIFY_PARAM_set_trust(),

-X509_VERIFY_PARAM_add0_policy() and X509_VERIFY_PARAM_set1_policies() return 1
-for success and 0 for failure. 
+X509_VERIFY_PARAM_add0_policy() X509_VERIFY_PARAM_set1_policies(),
+X509_VERIFY_PARAM_set1_host(), X509_VERIFY_PARAM_set_hostflags(),
+X509_VERIFY_PARAM_set1_email(), X509_VERIFY_PARAM_set1_ip() and
+X509_VERIFY_PARAM_set1_ip_asc() return 1 for success and 0 for
+failure.

 
 X509_VERIFY_PARAM_get_flags() returns the current verification flags.
 
 
 X509_VERIFY_PARAM_get_flags() returns the current verification flags.
 


@@ -133,6 +197,12 @@ verification. If this flag is set then additional status codes will be sent
 to the verification callback and it B<must> be prepared to handle such cases
 without assuming they are hard errors.
 
 to the verification callback and it B<must> be prepared to handle such cases
 without assuming they are hard errors.
 

+The B<X509_V_FLAG_NO_ALT_CHAINS> flag suppresses checking for alternative
+chains. By default, when building a certificate chain, if the first certificate
+chain found is not trusted, then OpenSSL will continue to check to see if an
+alternative chain can be found that is trusted. With this flag set the behaviour
+will match that of OpenSSL versions prior to 1.1.0.
+

 =head1 NOTES
 
 The above functions should be used to manipulate verification parameters
 =head1 NOTES
 
 The above functions should be used to manipulate verification parameters


@@ -162,10 +232,13 @@ connections associated with an B<SSL_CTX> structure B<ctx>:
 
 =head1 SEE ALSO
 
 
 =head1 SEE ALSO
 

-L<X509_verify_cert(3)|X509_verify_cert(3)>
+L<X509_verify_cert(3)|X509_verify_cert(3)>,
+L<X509_check_host(3)|X509_check_host(3)>,
+L<X509_check_email(3)|X509_check_email(3)>,
+L<X509_check_ip(3)|X509_check_ip(3)>

 
 =head1 HISTORY
 
 
 =head1 HISTORY
 

-TBA
+The B<X509_V_FLAG_NO_ALT_CHAINS> flag was added in OpenSSL 1.1.0

 
 =cut
 
 =cut