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X509V3_GET_EXT_BY_NID(3) | Library Functions Manual | X509V3_GET_EXT_BY_NID(3) |
NAME
X509v3_get_ext_count
,
X509v3_get_ext
,
X509v3_get_ext_by_NID
,
X509v3_get_ext_by_OBJ
,
X509v3_get_ext_by_critical
,
X509v3_delete_ext
,
X509v3_add_ext
,
X509_get_ext_count
,
X509_get_ext
,
X509_get_ext_by_NID
,
X509_get_ext_by_OBJ
,
X509_get_ext_by_critical
,
X509_delete_ext
,
X509_add_ext
,
X509_CRL_get_ext_count
,
X509_CRL_get_ext
,
X509_CRL_get_ext_by_NID
,
X509_CRL_get_ext_by_OBJ
,
X509_CRL_get_ext_by_critical
,
X509_CRL_delete_ext
,
X509_CRL_add_ext
,
X509_REVOKED_get_ext_count
,
X509_REVOKED_get_ext
,
X509_REVOKED_get_ext_by_NID
,
X509_REVOKED_get_ext_by_OBJ
,
X509_REVOKED_get_ext_by_critical
,
X509_REVOKED_delete_ext
,
X509_REVOKED_add_ext
—
extension stack utility functions
SYNOPSIS
#include
<openssl/x509.h>
int
X509v3_get_ext_count
(const
STACK_OF(X509_EXTENSION) *x);
X509_EXTENSION *
X509v3_get_ext
(const
STACK_OF(X509_EXTENSION) *x, int loc);
int
X509v3_get_ext_by_NID
(const
STACK_OF(X509_EXTENSION) *x, int nid,
int lastpos);
int
X509v3_get_ext_by_OBJ
(const
STACK_OF(X509_EXTENSION) *x, const
ASN1_OBJECT *obj, int lastpos);
int
X509v3_get_ext_by_critical
(const
STACK_OF(X509_EXTENSION) *x, int crit,
int lastpos);
X509_EXTENSION *
X509v3_delete_ext
(STACK_OF(X509_EXTENSION)
*x, int loc);
STACK_OF(X509_EXTENSION) *
X509v3_add_ext
(STACK_OF(X509_EXTENSION)
**x, X509_EXTENSION *ex,
int loc);
int
X509_get_ext_count
(const
X509 *x);
X509_EXTENSION *
X509_get_ext
(const
X509 *x, int loc);
int
X509_get_ext_by_NID
(const
X509 *x, int nid,
int lastpos);
int
X509_get_ext_by_OBJ
(const
X509 *x, const ASN1_OBJECT *obj,
int lastpos);
int
X509_get_ext_by_critical
(const
X509 *x, int crit,
int lastpos);
X509_EXTENSION *
X509_delete_ext
(X509
*x, int loc);
int
X509_add_ext
(X509
*x, X509_EXTENSION *ex,
int loc);
int
X509_CRL_get_ext_count
(const
X509_CRL *x);
X509_EXTENSION *
X509_CRL_get_ext
(const
X509_CRL *x, int loc);
int
X509_CRL_get_ext_by_NID
(const
X509_CRL *x, int nid,
int lastpos);
int
X509_CRL_get_ext_by_OBJ
(const
X509_CRL *x, const ASN1_OBJECT *obj,
int lastpos);
int
X509_CRL_get_ext_by_critical
(const
X509_CRL *x, int crit,
int lastpos);
X509_EXTENSION *
X509_CRL_delete_ext
(X509_CRL
*x, int loc);
int
X509_CRL_add_ext
(X509_CRL
*x, X509_EXTENSION *ex,
int loc);
int
X509_REVOKED_get_ext_count
(const
X509_REVOKED *x);
X509_EXTENSION *
X509_REVOKED_get_ext
(const
X509_REVOKED *x, int loc);
int
X509_REVOKED_get_ext_by_NID
(const
X509_REVOKED *x, int nid,
int lastpos);
int
X509_REVOKED_get_ext_by_OBJ
(const
X509_REVOKED *x, const ASN1_OBJECT
*obj, int lastpos);
int
X509_REVOKED_get_ext_by_critical
(const
X509_REVOKED *x, int crit,
int lastpos);
X509_EXTENSION *
X509_REVOKED_delete_ext
(X509_REVOKED
*x, int loc);
int
X509_REVOKED_add_ext
(X509_REVOKED
*x, X509_EXTENSION *ex,
int loc);
DESCRIPTION
X509v3_get_ext_count
() retrieves the number
of extensions in x.
X509v3_get_ext
() retrieves extension
loc from x.
The index loc can take any value from 0 to
X509_get_ext_count
(x)
- 1. The returned extension is an internal pointer
which must not be freed up by the application.
X509v3_get_ext_by_NID
() and
X509v3_get_ext_by_OBJ
() look for an
extension with nid or
obj from extension stack
x. The search starts from the extension after
lastpos or from the beginning if
lastpos is -1. If the extension is found, its
index is returned; otherwise, -1 is returned.
X509v3_get_ext_by_critical
() is similar to
X509v3_get_ext_by_NID
() except that it
looks for an extension of criticality crit. A
zero value for crit looks for a non-critical
extension; a non-zero value looks for a critical extension.
X509v3_delete_ext
() deletes the extension
with index loc from
x. The deleted extension is returned and must
be freed by the caller. If loc is an invalid
index value, NULL
is returned.
X509v3_add_ext
() adds the extension
ex to the stack
*x at position
loc. If loc
is -1, the new extension is added to the end. If
*x is
NULL
, a new stack will be allocated. The
passed extension ex is duplicated internally
so it must be freed after use.
X509_get_ext_count
(),
X509_get_ext
(),
X509_get_ext_by_NID
(),
X509_get_ext_by_OBJ
(),
X509_get_ext_by_critical
(),
X509_delete_ext
(), and
X509_add_ext
() operate on the extensions of
certificate x. They are otherwise identical
to the X509v3 functions.
X509_CRL_get_ext_count
(),
X509_CRL_get_ext
(),
X509_CRL_get_ext_by_NID
(),
X509_CRL_get_ext_by_OBJ
(),
X509_CRL_get_ext_by_critical
(),
X509_CRL_delete_ext
(), and
X509_CRL_add_ext
() operate on the
extensions of the CRL x. They are otherwise
identical to the X509v3 functions.
X509_REVOKED_get_ext_count
(),
X509_REVOKED_get_ext
(),
X509_REVOKED_get_ext_by_NID
(),
X509_REVOKED_get_ext_by_OBJ
(),
X509_REVOKED_get_ext_by_critical
(),
X509_REVOKED_delete_ext
(), and
X509_REVOKED_add_ext
() operate on the
extensions of the CRL entry x. They are
otherwise identical to the X509v3 functions.
These functions are used to examine stacks of extensions directly. Many
applications will want to parse or encode and add an extension: they should
use the extension encode and decode functions instead such as
X509_get_ext_d2i(3).
Extension indices start from zero, so a zero index return value is not an error.
These search functions start from the extension
after the
lastpos parameter, so it should initially be
set to -1. If it is set to 0, the initial extension will not be checked.
RETURN VALUES
X509v3_get_ext_count
() returns the extension
count.
X509v3_get_ext
(),
X509v3_delete_ext
(), and
X509_delete_ext
() return an
X509_EXTENSION pointer or
NULL
if an error occurs.
X509v3_get_ext_by_NID
(),
X509v3_get_ext_by_OBJ
(), and
X509v3_get_ext_by_critical
() return the
extension index or -1 if an error occurs.
X509v3_add_ext
() returns a stack of
extensions or NULL
on error.
X509_add_ext
() returns 1 on success or 0 on
error.
SEE ALSO
X509_CRL_new(3), X509_EXTENSION_new(3), X509_new(3), X509_REVOKED_new(3), X509V3_EXT_print(3), X509V3_extensions_print(3), X509V3_get_d2i(3)HISTORY
These functions first appeared in SSLeay 0.8.0 and have been available since OpenBSD 2.4.July 12, 2021 | Debian |