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   gnutls_x509_crt_get_extension_by_oid    ( 3 )

Функции API (API function)

Имя (Name)

gnutls_x509_crt_get_extension_by_oid - API function

Синопсис (Synopsis)

#include <gnutls/x509.h>

int gnutls_x509_crt_get_extension_by_oid(gnutls_x509_crt_t cert, const char * oid, unsigned indx, void * buf, size_t * buf_size, unsigned int * critical);


Аргументы (Arguments)

gnutls_x509_crt_t cert
                   should contain a gnutls_x509_crt_t type

const char * oid holds an Object Identified in null terminated string

unsigned indx In case multiple same OIDs exist in the extensions, this specifies which to send. Use (0) to get the first one.

void * buf a pointer to a structure to hold the name (may be null)

size_t * buf_size initially holds the size of buf

unsigned int * critical will be non-zero if the extension is marked as critical


Описание (Description)

This function will return the extension specified by the OID in
       the certificate.  The extensions will be returned as binary data
       DER encoded, in the provided buffer.

Возвращаемое значение (Return value)

On success, GNUTLS_E_SUCCESS (0) is returned, otherwise a
       negative error code is returned. If the certificate does not
       contain the specified extension
       GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE will be returned.

Сообщение об ошибках (Reporting bugs)

Report bugs to <bugs@gnutls.org>.
       Home page: https://www.gnutls.org

Смотри также (See also)

The full documentation for gnutls is maintained as a Texinfo
       manual.  If the /usr/share/doc/gnutls/ directory does not contain
       the HTML form visit

https://www.gnutls.org/manual/